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 AM |
974 | /* This section is part of this segment if its file |
975 | offset plus size lies within the segment's memory | |
976 | span and, if the section is loaded, the extent of the | |
977 | loaded data lies within the extent of the segment. | |
978 | ||
979 | Note - we used to check the p_paddr field as well, and | |
980 | refuse to set the LMA if it was 0. This is wrong | |
981 | though, as a perfectly valid initialised segment can | |
982 | have a p_paddr of zero. Some architectures, eg ARM, | |
983 | place special significance on the address 0 and | |
984 | executables need to be able to have a segment which | |
985 | covers this address. */ | |
986 | if (phdr->p_type == PT_LOAD | |
987 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset | |
988 | && (hdr->sh_offset + hdr->sh_size | |
989 | <= phdr->p_offset + phdr->p_memsz) | |
990 | && ((flags & SEC_LOAD) == 0 | |
991 | || (hdr->sh_offset + hdr->sh_size | |
992 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 993 | { |
88967714 AM |
994 | if ((flags & SEC_LOAD) == 0) |
995 | newsect->lma = (phdr->p_paddr | |
996 | + hdr->sh_addr - phdr->p_vaddr); | |
997 | else | |
998 | /* We used to use the same adjustment for SEC_LOAD | |
999 | sections, but that doesn't work if the segment | |
1000 | is packed with code from multiple VMAs. | |
1001 | Instead we calculate the section LMA based on | |
1002 | the segment LMA. It is assumed that the | |
1003 | segment will contain sections with contiguous | |
1004 | LMAs, even if the VMAs are not. */ | |
1005 | newsect->lma = (phdr->p_paddr | |
1006 | + hdr->sh_offset - phdr->p_offset); | |
1007 | ||
1008 | /* With contiguous segments, we can't tell from file | |
1009 | offsets whether a section with zero size should | |
1010 | be placed at the end of one segment or the | |
1011 | beginning of the next. Decide based on vaddr. */ | |
1012 | if (hdr->sh_addr >= phdr->p_vaddr | |
1013 | && (hdr->sh_addr + hdr->sh_size | |
1014 | <= phdr->p_vaddr + phdr->p_memsz)) | |
1015 | break; | |
252b5132 RH |
1016 | } |
1017 | } | |
1018 | } | |
1019 | ||
b34976b6 | 1020 | return TRUE; |
252b5132 RH |
1021 | } |
1022 | ||
252b5132 RH |
1023 | const char *const bfd_elf_section_type_names[] = { |
1024 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1025 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1026 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1027 | }; | |
1028 | ||
1049f94e | 1029 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1030 | output, and the reloc is against an external symbol, and nothing |
1031 | has given us any additional addend, the resulting reloc will also | |
1032 | be against the same symbol. In such a case, we don't want to | |
1033 | change anything about the way the reloc is handled, since it will | |
1034 | all be done at final link time. Rather than put special case code | |
1035 | into bfd_perform_relocation, all the reloc types use this howto | |
1036 | function. It just short circuits the reloc if producing | |
1049f94e | 1037 | relocatable output against an external symbol. */ |
252b5132 | 1038 | |
252b5132 | 1039 | bfd_reloc_status_type |
217aa764 AM |
1040 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1041 | arelent *reloc_entry, | |
1042 | asymbol *symbol, | |
1043 | void *data ATTRIBUTE_UNUSED, | |
1044 | asection *input_section, | |
1045 | bfd *output_bfd, | |
1046 | char **error_message ATTRIBUTE_UNUSED) | |
1047 | { | |
1048 | if (output_bfd != NULL | |
252b5132 RH |
1049 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1050 | && (! reloc_entry->howto->partial_inplace | |
1051 | || reloc_entry->addend == 0)) | |
1052 | { | |
1053 | reloc_entry->address += input_section->output_offset; | |
1054 | return bfd_reloc_ok; | |
1055 | } | |
1056 | ||
1057 | return bfd_reloc_continue; | |
1058 | } | |
1059 | \f | |
0ac4564e L |
1060 | /* Copy the program header and other data from one object module to |
1061 | another. */ | |
252b5132 | 1062 | |
b34976b6 | 1063 | bfd_boolean |
217aa764 | 1064 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1065 | { |
1066 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1067 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1068 | return TRUE; |
2d502050 L |
1069 | |
1070 | BFD_ASSERT (!elf_flags_init (obfd) | |
1071 | || (elf_elfheader (obfd)->e_flags | |
1072 | == elf_elfheader (ibfd)->e_flags)); | |
1073 | ||
0ac4564e | 1074 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1075 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1076 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1077 | |
1078 | /* Copy object attributes. */ | |
1079 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
1080 | ||
b34976b6 | 1081 | return TRUE; |
2d502050 L |
1082 | } |
1083 | ||
cedc298e L |
1084 | static const char * |
1085 | get_segment_type (unsigned int p_type) | |
1086 | { | |
1087 | const char *pt; | |
1088 | switch (p_type) | |
1089 | { | |
1090 | case PT_NULL: pt = "NULL"; break; | |
1091 | case PT_LOAD: pt = "LOAD"; break; | |
1092 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1093 | case PT_INTERP: pt = "INTERP"; break; | |
1094 | case PT_NOTE: pt = "NOTE"; break; | |
1095 | case PT_SHLIB: pt = "SHLIB"; break; | |
1096 | case PT_PHDR: pt = "PHDR"; break; | |
1097 | case PT_TLS: pt = "TLS"; break; | |
1098 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1099 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1100 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1101 | default: pt = NULL; break; | |
1102 | } | |
1103 | return pt; | |
1104 | } | |
1105 | ||
f0b79d91 L |
1106 | /* Print out the program headers. */ |
1107 | ||
b34976b6 | 1108 | bfd_boolean |
217aa764 | 1109 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1110 | { |
217aa764 | 1111 | FILE *f = farg; |
252b5132 RH |
1112 | Elf_Internal_Phdr *p; |
1113 | asection *s; | |
1114 | bfd_byte *dynbuf = NULL; | |
1115 | ||
1116 | p = elf_tdata (abfd)->phdr; | |
1117 | if (p != NULL) | |
1118 | { | |
1119 | unsigned int i, c; | |
1120 | ||
1121 | fprintf (f, _("\nProgram Header:\n")); | |
1122 | c = elf_elfheader (abfd)->e_phnum; | |
1123 | for (i = 0; i < c; i++, p++) | |
1124 | { | |
cedc298e | 1125 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1126 | char buf[20]; |
1127 | ||
cedc298e | 1128 | if (pt == NULL) |
252b5132 | 1129 | { |
cedc298e L |
1130 | sprintf (buf, "0x%lx", p->p_type); |
1131 | pt = buf; | |
252b5132 | 1132 | } |
dc810e39 | 1133 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1134 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1135 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1136 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1137 | fprintf (f, " paddr 0x"); |
60b89a18 | 1138 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1139 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1140 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1141 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1142 | fprintf (f, " memsz 0x"); |
60b89a18 | 1143 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1144 | fprintf (f, " flags %c%c%c", |
1145 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1146 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1147 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1148 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1149 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1150 | fprintf (f, "\n"); |
1151 | } | |
1152 | } | |
1153 | ||
1154 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1155 | if (s != NULL) | |
1156 | { | |
cb33740c | 1157 | unsigned int elfsec; |
dc810e39 | 1158 | unsigned long shlink; |
252b5132 RH |
1159 | bfd_byte *extdyn, *extdynend; |
1160 | size_t extdynsize; | |
217aa764 | 1161 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1162 | |
1163 | fprintf (f, _("\nDynamic Section:\n")); | |
1164 | ||
eea6121a | 1165 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1166 | goto error_return; |
1167 | ||
1168 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
cb33740c | 1169 | if (elfsec == SHN_BAD) |
252b5132 | 1170 | goto error_return; |
dc810e39 | 1171 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1172 | |
1173 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1174 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1175 | ||
1176 | extdyn = dynbuf; | |
eea6121a | 1177 | extdynend = extdyn + s->size; |
252b5132 RH |
1178 | for (; extdyn < extdynend; extdyn += extdynsize) |
1179 | { | |
1180 | Elf_Internal_Dyn dyn; | |
ad9563d6 | 1181 | const char *name = ""; |
252b5132 | 1182 | char ab[20]; |
b34976b6 | 1183 | bfd_boolean stringp; |
ad9563d6 | 1184 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 1185 | |
217aa764 | 1186 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1187 | |
1188 | if (dyn.d_tag == DT_NULL) | |
1189 | break; | |
1190 | ||
b34976b6 | 1191 | stringp = FALSE; |
252b5132 RH |
1192 | switch (dyn.d_tag) |
1193 | { | |
1194 | default: | |
ad9563d6 CM |
1195 | if (bed->elf_backend_get_target_dtag) |
1196 | name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag); | |
1197 | ||
1198 | if (!strcmp (name, "")) | |
1199 | { | |
1200 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1201 | name = ab; | |
1202 | } | |
252b5132 RH |
1203 | break; |
1204 | ||
b34976b6 | 1205 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1206 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1207 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1208 | case DT_HASH: name = "HASH"; break; | |
1209 | case DT_STRTAB: name = "STRTAB"; break; | |
1210 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1211 | case DT_RELA: name = "RELA"; break; | |
1212 | case DT_RELASZ: name = "RELASZ"; break; | |
1213 | case DT_RELAENT: name = "RELAENT"; break; | |
1214 | case DT_STRSZ: name = "STRSZ"; break; | |
1215 | case DT_SYMENT: name = "SYMENT"; break; | |
1216 | case DT_INIT: name = "INIT"; break; | |
1217 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1218 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1219 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1220 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1221 | case DT_REL: name = "REL"; break; | |
1222 | case DT_RELSZ: name = "RELSZ"; break; | |
1223 | case DT_RELENT: name = "RELENT"; break; | |
1224 | case DT_PLTREL: name = "PLTREL"; break; | |
1225 | case DT_DEBUG: name = "DEBUG"; break; | |
1226 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1227 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1228 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1229 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1230 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1231 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1232 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1233 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1234 | case DT_FLAGS: name = "FLAGS"; break; |
1235 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1236 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1237 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1238 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1239 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1240 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1241 | case DT_FEATURE: name = "FEATURE"; break; | |
1242 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1243 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1244 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1245 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1246 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1247 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1248 | case DT_PLTPAD: name = "PLTPAD"; break; |
1249 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1250 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1251 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1252 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1253 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1254 | case DT_VERSYM: name = "VERSYM"; break; |
1255 | case DT_VERDEF: name = "VERDEF"; break; | |
1256 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1257 | case DT_VERNEED: name = "VERNEED"; break; | |
1258 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1259 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1260 | case DT_USED: name = "USED"; break; |
b34976b6 | 1261 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1262 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1263 | } |
1264 | ||
ad9563d6 | 1265 | fprintf (f, " %-20s ", name); |
252b5132 | 1266 | if (! stringp) |
a1f3c56e AN |
1267 | { |
1268 | fprintf (f, "0x"); | |
1269 | bfd_fprintf_vma (abfd, f, dyn.d_un.d_val); | |
1270 | } | |
252b5132 RH |
1271 | else |
1272 | { | |
1273 | const char *string; | |
dc810e39 | 1274 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1275 | |
dc810e39 | 1276 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1277 | if (string == NULL) |
1278 | goto error_return; | |
1279 | fprintf (f, "%s", string); | |
1280 | } | |
1281 | fprintf (f, "\n"); | |
1282 | } | |
1283 | ||
1284 | free (dynbuf); | |
1285 | dynbuf = NULL; | |
1286 | } | |
1287 | ||
1288 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1289 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1290 | { | |
fc0e6df6 | 1291 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1292 | return FALSE; |
252b5132 RH |
1293 | } |
1294 | ||
1295 | if (elf_dynverdef (abfd) != 0) | |
1296 | { | |
1297 | Elf_Internal_Verdef *t; | |
1298 | ||
1299 | fprintf (f, _("\nVersion definitions:\n")); | |
1300 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1301 | { | |
1302 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1303 | t->vd_flags, t->vd_hash, |
1304 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1305 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1306 | { |
1307 | Elf_Internal_Verdaux *a; | |
1308 | ||
1309 | fprintf (f, "\t"); | |
1310 | for (a = t->vd_auxptr->vda_nextptr; | |
1311 | a != NULL; | |
1312 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1313 | fprintf (f, "%s ", |
1314 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1315 | fprintf (f, "\n"); |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | if (elf_dynverref (abfd) != 0) | |
1321 | { | |
1322 | Elf_Internal_Verneed *t; | |
1323 | ||
1324 | fprintf (f, _("\nVersion References:\n")); | |
1325 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1326 | { | |
1327 | Elf_Internal_Vernaux *a; | |
1328 | ||
d0fb9a8d JJ |
1329 | fprintf (f, _(" required from %s:\n"), |
1330 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1331 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1332 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1333 | a->vna_flags, a->vna_other, |
1334 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1335 | } |
1336 | } | |
1337 | ||
b34976b6 | 1338 | return TRUE; |
252b5132 RH |
1339 | |
1340 | error_return: | |
1341 | if (dynbuf != NULL) | |
1342 | free (dynbuf); | |
b34976b6 | 1343 | return FALSE; |
252b5132 RH |
1344 | } |
1345 | ||
1346 | /* Display ELF-specific fields of a symbol. */ | |
1347 | ||
1348 | void | |
217aa764 AM |
1349 | bfd_elf_print_symbol (bfd *abfd, |
1350 | void *filep, | |
1351 | asymbol *symbol, | |
1352 | bfd_print_symbol_type how) | |
252b5132 | 1353 | { |
217aa764 | 1354 | FILE *file = filep; |
252b5132 RH |
1355 | switch (how) |
1356 | { | |
1357 | case bfd_print_symbol_name: | |
1358 | fprintf (file, "%s", symbol->name); | |
1359 | break; | |
1360 | case bfd_print_symbol_more: | |
1361 | fprintf (file, "elf "); | |
60b89a18 | 1362 | bfd_fprintf_vma (abfd, file, symbol->value); |
0af1713e | 1363 | fprintf (file, " %lx", (unsigned long) symbol->flags); |
252b5132 RH |
1364 | break; |
1365 | case bfd_print_symbol_all: | |
1366 | { | |
4e8a9624 AM |
1367 | const char *section_name; |
1368 | const char *name = NULL; | |
9c5bfbb7 | 1369 | const struct elf_backend_data *bed; |
7a13edea | 1370 | unsigned char st_other; |
dbb410c3 | 1371 | bfd_vma val; |
c044fabd | 1372 | |
252b5132 | 1373 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1374 | |
1375 | bed = get_elf_backend_data (abfd); | |
1376 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1377 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1378 | |
1379 | if (name == NULL) | |
1380 | { | |
7ee38065 | 1381 | name = symbol->name; |
217aa764 | 1382 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1383 | } |
1384 | ||
252b5132 RH |
1385 | fprintf (file, " %s\t", section_name); |
1386 | /* Print the "other" value for a symbol. For common symbols, | |
1387 | we've already printed the size; now print the alignment. | |
1388 | For other symbols, we have no specified alignment, and | |
1389 | we've printed the address; now print the size. */ | |
dcf6c779 | 1390 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1391 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1392 | else | |
1393 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1394 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1395 | |
1396 | /* If we have version information, print it. */ | |
1397 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1398 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1399 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1400 | { | |
1401 | unsigned int vernum; | |
1402 | const char *version_string; | |
1403 | ||
1404 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1405 | ||
1406 | if (vernum == 0) | |
1407 | version_string = ""; | |
1408 | else if (vernum == 1) | |
1409 | version_string = "Base"; | |
1410 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1411 | version_string = | |
1412 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1413 | else | |
1414 | { | |
1415 | Elf_Internal_Verneed *t; | |
1416 | ||
1417 | version_string = ""; | |
1418 | for (t = elf_tdata (abfd)->verref; | |
1419 | t != NULL; | |
1420 | t = t->vn_nextref) | |
1421 | { | |
1422 | Elf_Internal_Vernaux *a; | |
1423 | ||
1424 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1425 | { | |
1426 | if (a->vna_other == vernum) | |
1427 | { | |
1428 | version_string = a->vna_nodename; | |
1429 | break; | |
1430 | } | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1436 | fprintf (file, " %-11s", version_string); | |
1437 | else | |
1438 | { | |
1439 | int i; | |
1440 | ||
1441 | fprintf (file, " (%s)", version_string); | |
1442 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1443 | putc (' ', file); | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1448 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1449 | |
7a13edea NC |
1450 | switch (st_other) |
1451 | { | |
1452 | case 0: break; | |
1453 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1454 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1455 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1456 | default: | |
1457 | /* Some other non-defined flags are also present, so print | |
1458 | everything hex. */ | |
1459 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1460 | } | |
252b5132 | 1461 | |
587ff49e | 1462 | fprintf (file, " %s", name); |
252b5132 RH |
1463 | } |
1464 | break; | |
1465 | } | |
1466 | } | |
252b5132 | 1467 | |
252b5132 RH |
1468 | /* Allocate an ELF string table--force the first byte to be zero. */ |
1469 | ||
1470 | struct bfd_strtab_hash * | |
217aa764 | 1471 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1472 | { |
1473 | struct bfd_strtab_hash *ret; | |
1474 | ||
1475 | ret = _bfd_stringtab_init (); | |
1476 | if (ret != NULL) | |
1477 | { | |
1478 | bfd_size_type loc; | |
1479 | ||
b34976b6 | 1480 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1481 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1482 | if (loc == (bfd_size_type) -1) | |
1483 | { | |
1484 | _bfd_stringtab_free (ret); | |
1485 | ret = NULL; | |
1486 | } | |
1487 | } | |
1488 | return ret; | |
1489 | } | |
1490 | \f | |
1491 | /* ELF .o/exec file reading */ | |
1492 | ||
c044fabd | 1493 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1494 | |
b34976b6 | 1495 | bfd_boolean |
217aa764 | 1496 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 | 1497 | { |
4fbb74a6 AM |
1498 | Elf_Internal_Shdr *hdr; |
1499 | Elf_Internal_Ehdr *ehdr; | |
1500 | const struct elf_backend_data *bed; | |
90937f86 | 1501 | const char *name; |
252b5132 | 1502 | |
4fbb74a6 AM |
1503 | if (shindex >= elf_numsections (abfd)) |
1504 | return FALSE; | |
1505 | ||
1506 | hdr = elf_elfsections (abfd)[shindex]; | |
1507 | ehdr = elf_elfheader (abfd); | |
1508 | name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx, | |
1b3a8575 | 1509 | hdr->sh_name); |
933d961a JJ |
1510 | if (name == NULL) |
1511 | return FALSE; | |
252b5132 | 1512 | |
4fbb74a6 | 1513 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
1514 | switch (hdr->sh_type) |
1515 | { | |
1516 | case SHT_NULL: | |
1517 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1518 | return TRUE; |
252b5132 RH |
1519 | |
1520 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1521 | case SHT_NOBITS: /* .bss section. */ |
1522 | case SHT_HASH: /* .hash section. */ | |
1523 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1524 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1525 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1526 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1527 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1528 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1529 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1530 | |
797fc050 | 1531 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1532 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1533 | return FALSE; |
8e0ed13f NC |
1534 | if (hdr->sh_link > elf_numsections (abfd) |
1535 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1536 | return FALSE; | |
797fc050 AM |
1537 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1538 | { | |
1539 | Elf_Internal_Shdr *dynsymhdr; | |
1540 | ||
1541 | /* The shared libraries distributed with hpux11 have a bogus | |
1542 | sh_link field for the ".dynamic" section. Find the | |
1543 | string table for the ".dynsym" section instead. */ | |
1544 | if (elf_dynsymtab (abfd) != 0) | |
1545 | { | |
1546 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1547 | hdr->sh_link = dynsymhdr->sh_link; | |
1548 | } | |
1549 | else | |
1550 | { | |
1551 | unsigned int i, num_sec; | |
1552 | ||
1553 | num_sec = elf_numsections (abfd); | |
1554 | for (i = 1; i < num_sec; i++) | |
1555 | { | |
1556 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1557 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1558 | { | |
1559 | hdr->sh_link = dynsymhdr->sh_link; | |
1560 | break; | |
1561 | } | |
1562 | } | |
1563 | } | |
1564 | } | |
1565 | break; | |
1566 | ||
252b5132 RH |
1567 | case SHT_SYMTAB: /* A symbol table */ |
1568 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1569 | return TRUE; |
252b5132 | 1570 | |
a50b2160 JJ |
1571 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1572 | return FALSE; | |
3337c1e5 AM |
1573 | if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size) |
1574 | return FALSE; | |
252b5132 RH |
1575 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1576 | elf_onesymtab (abfd) = shindex; | |
1577 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1578 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1579 | abfd->flags |= HAS_SYMS; | |
1580 | ||
1581 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1582 | SHF_ALLOC is set, and this is a shared object, then we also |
1583 | treat this section as a BFD section. We can not base the | |
1584 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1585 | set in a relocatable object file, which would confuse the | |
1586 | linker. */ | |
252b5132 RH |
1587 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1588 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1589 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1590 | shindex)) | |
b34976b6 | 1591 | return FALSE; |
252b5132 | 1592 | |
1b3a8575 AM |
1593 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1594 | can't read symbols without that section loaded as well. It | |
1595 | is most likely specified by the next section header. */ | |
1596 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1597 | { | |
1598 | unsigned int i, num_sec; | |
1599 | ||
1600 | num_sec = elf_numsections (abfd); | |
1601 | for (i = shindex + 1; i < num_sec; i++) | |
1602 | { | |
1603 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1604 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1605 | && hdr2->sh_link == shindex) | |
1606 | break; | |
1607 | } | |
1608 | if (i == num_sec) | |
1609 | for (i = 1; i < shindex; i++) | |
1610 | { | |
1611 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1612 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1613 | && hdr2->sh_link == shindex) | |
1614 | break; | |
1615 | } | |
1616 | if (i != shindex) | |
1617 | return bfd_section_from_shdr (abfd, i); | |
1618 | } | |
b34976b6 | 1619 | return TRUE; |
252b5132 RH |
1620 | |
1621 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1622 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1623 | return TRUE; |
252b5132 | 1624 | |
a50b2160 JJ |
1625 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1626 | return FALSE; | |
252b5132 RH |
1627 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1628 | elf_dynsymtab (abfd) = shindex; | |
1629 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1630 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1631 | abfd->flags |= HAS_SYMS; | |
1632 | ||
1633 | /* Besides being a symbol table, we also treat this as a regular | |
1634 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1635 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1636 | |
9ad5cbcf AM |
1637 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1638 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1639 | return TRUE; |
9ad5cbcf | 1640 | |
1b3a8575 | 1641 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1642 | elf_symtab_shndx (abfd) = shindex; |
1643 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1644 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1645 | return TRUE; |
9ad5cbcf | 1646 | |
252b5132 RH |
1647 | case SHT_STRTAB: /* A string table */ |
1648 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1649 | return TRUE; |
252b5132 RH |
1650 | if (ehdr->e_shstrndx == shindex) |
1651 | { | |
1652 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1653 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1654 | return TRUE; |
252b5132 | 1655 | } |
1b3a8575 AM |
1656 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1657 | { | |
1658 | symtab_strtab: | |
1659 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1660 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1661 | return TRUE; | |
1662 | } | |
1663 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1664 | { | |
1665 | dynsymtab_strtab: | |
1666 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1667 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1668 | elf_elfsections (abfd)[shindex] = hdr; | |
1669 | /* We also treat this as a regular section, so that objcopy | |
1670 | can handle it. */ | |
6dc132d9 L |
1671 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1672 | shindex); | |
1b3a8575 | 1673 | } |
252b5132 | 1674 | |
1b3a8575 AM |
1675 | /* If the string table isn't one of the above, then treat it as a |
1676 | regular section. We need to scan all the headers to be sure, | |
1677 | just in case this strtab section appeared before the above. */ | |
1678 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1679 | { | |
1680 | unsigned int i, num_sec; | |
252b5132 | 1681 | |
1b3a8575 AM |
1682 | num_sec = elf_numsections (abfd); |
1683 | for (i = 1; i < num_sec; i++) | |
1684 | { | |
1685 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1686 | if (hdr2->sh_link == shindex) | |
1687 | { | |
933d961a JJ |
1688 | /* Prevent endless recursion on broken objects. */ |
1689 | if (i == shindex) | |
1690 | return FALSE; | |
1b3a8575 AM |
1691 | if (! bfd_section_from_shdr (abfd, i)) |
1692 | return FALSE; | |
1693 | if (elf_onesymtab (abfd) == i) | |
1694 | goto symtab_strtab; | |
1695 | if (elf_dynsymtab (abfd) == i) | |
1696 | goto dynsymtab_strtab; | |
1697 | } | |
1698 | } | |
1699 | } | |
6dc132d9 | 1700 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1701 | |
1702 | case SHT_REL: | |
1703 | case SHT_RELA: | |
1704 | /* *These* do a lot of work -- but build no sections! */ | |
1705 | { | |
1706 | asection *target_sect; | |
1707 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1708 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1709 | |
aa2ca951 JJ |
1710 | if (hdr->sh_entsize |
1711 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1712 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1713 | return FALSE; | |
1714 | ||
03ae5f59 | 1715 | /* Check for a bogus link to avoid crashing. */ |
4fbb74a6 | 1716 | if (hdr->sh_link >= num_sec) |
03ae5f59 ILT |
1717 | { |
1718 | ((*_bfd_error_handler) | |
d003868e AM |
1719 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1720 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1721 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1722 | shindex); | |
03ae5f59 ILT |
1723 | } |
1724 | ||
252b5132 RH |
1725 | /* For some incomprehensible reason Oracle distributes |
1726 | libraries for Solaris in which some of the objects have | |
1727 | bogus sh_link fields. It would be nice if we could just | |
1728 | reject them, but, unfortunately, some people need to use | |
1729 | them. We scan through the section headers; if we find only | |
1730 | one suitable symbol table, we clobber the sh_link to point | |
83b89087 L |
1731 | to it. I hope this doesn't break anything. |
1732 | ||
1733 | Don't do it on executable nor shared library. */ | |
1734 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 | |
1735 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
252b5132 RH |
1736 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) |
1737 | { | |
9ad5cbcf | 1738 | unsigned int scan; |
252b5132 RH |
1739 | int found; |
1740 | ||
1741 | found = 0; | |
9ad5cbcf | 1742 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1743 | { |
1744 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1745 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1746 | { | |
1747 | if (found != 0) | |
1748 | { | |
1749 | found = 0; | |
1750 | break; | |
1751 | } | |
1752 | found = scan; | |
1753 | } | |
1754 | } | |
1755 | if (found != 0) | |
1756 | hdr->sh_link = found; | |
1757 | } | |
1758 | ||
1759 | /* Get the symbol table. */ | |
1b3a8575 AM |
1760 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1761 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1762 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1763 | return FALSE; |
252b5132 RH |
1764 | |
1765 | /* If this reloc section does not use the main symbol table we | |
1766 | don't treat it as a reloc section. BFD can't adequately | |
1767 | represent such a section, so at least for now, we don't | |
c044fabd | 1768 | try. We just present it as a normal section. We also |
60bcf0fa | 1769 | can't use it as a reloc section if it points to the null |
83b89087 L |
1770 | section, an invalid section, another reloc section, or its |
1771 | sh_link points to the null section. */ | |
185ef66d | 1772 | if (hdr->sh_link != elf_onesymtab (abfd) |
83b89087 | 1773 | || hdr->sh_link == SHN_UNDEF |
185ef66d | 1774 | || hdr->sh_info == SHN_UNDEF |
185ef66d AM |
1775 | || hdr->sh_info >= num_sec |
1776 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
1777 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
1778 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1779 | shindex); | |
252b5132 RH |
1780 | |
1781 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1782 | return FALSE; |
252b5132 RH |
1783 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1784 | if (target_sect == NULL) | |
b34976b6 | 1785 | return FALSE; |
252b5132 RH |
1786 | |
1787 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1788 | || target_sect->reloc_count == 0) | |
1789 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1790 | else | |
1791 | { | |
dc810e39 | 1792 | bfd_size_type amt; |
252b5132 | 1793 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1794 | amt = sizeof (*hdr2); |
217aa764 | 1795 | hdr2 = bfd_alloc (abfd, amt); |
14b1c01e AM |
1796 | if (hdr2 == NULL) |
1797 | return FALSE; | |
252b5132 RH |
1798 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1799 | } | |
1800 | *hdr2 = *hdr; | |
1801 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1802 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1803 | target_sect->flags |= SEC_RELOC; |
1804 | target_sect->relocation = NULL; | |
1805 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1806 | /* In the section to which the relocations apply, mark whether |
1807 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1808 | if (hdr->sh_size != 0) |
68bfbfcc | 1809 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1810 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1811 | return TRUE; |
252b5132 | 1812 | } |
252b5132 RH |
1813 | |
1814 | case SHT_GNU_verdef: | |
1815 | elf_dynverdef (abfd) = shindex; | |
1816 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1817 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1818 | |
1819 | case SHT_GNU_versym: | |
a50b2160 JJ |
1820 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1821 | return FALSE; | |
252b5132 RH |
1822 | elf_dynversym (abfd) = shindex; |
1823 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1824 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1825 | |
1826 | case SHT_GNU_verneed: | |
1827 | elf_dynverref (abfd) = shindex; | |
1828 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1829 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1830 | |
1831 | case SHT_SHLIB: | |
b34976b6 | 1832 | return TRUE; |
252b5132 | 1833 | |
dbb410c3 | 1834 | case SHT_GROUP: |
1783205a | 1835 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1836 | return FALSE; |
6dc132d9 | 1837 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1838 | return FALSE; |
dbb410c3 AM |
1839 | if (hdr->contents != NULL) |
1840 | { | |
1841 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1842 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1843 | asection *s; |
1844 | ||
b885599b AM |
1845 | if (idx->flags & GRP_COMDAT) |
1846 | hdr->bfd_section->flags | |
1847 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1848 | ||
45c5e9ed L |
1849 | /* We try to keep the same section order as it comes in. */ |
1850 | idx += n_elt; | |
dbb410c3 | 1851 | while (--n_elt != 0) |
1783205a NC |
1852 | { |
1853 | --idx; | |
1854 | ||
1855 | if (idx->shdr != NULL | |
1856 | && (s = idx->shdr->bfd_section) != NULL | |
1857 | && elf_next_in_group (s) != NULL) | |
1858 | { | |
1859 | elf_next_in_group (hdr->bfd_section) = s; | |
1860 | break; | |
1861 | } | |
1862 | } | |
dbb410c3 AM |
1863 | } |
1864 | break; | |
1865 | ||
252b5132 | 1866 | default: |
104d59d1 JM |
1867 | /* Possibly an attributes section. */ |
1868 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1869 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1870 | { | |
1871 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1872 | return FALSE; | |
1873 | _bfd_elf_parse_attributes (abfd, hdr); | |
1874 | return TRUE; | |
1875 | } | |
1876 | ||
252b5132 | 1877 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1878 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1879 | return TRUE; | |
1880 | ||
1881 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1882 | { | |
1883 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1884 | /* FIXME: How to properly handle allocated section reserved | |
1885 | for applications? */ | |
1886 | (*_bfd_error_handler) | |
1887 | (_("%B: don't know how to handle allocated, application " | |
1888 | "specific section `%s' [0x%8x]"), | |
1889 | abfd, name, hdr->sh_type); | |
1890 | else | |
1891 | /* Allow sections reserved for applications. */ | |
1892 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1893 | shindex); | |
1894 | } | |
1895 | else if (hdr->sh_type >= SHT_LOPROC | |
1896 | && hdr->sh_type <= SHT_HIPROC) | |
1897 | /* FIXME: We should handle this section. */ | |
1898 | (*_bfd_error_handler) | |
1899 | (_("%B: don't know how to handle processor specific section " | |
1900 | "`%s' [0x%8x]"), | |
1901 | abfd, name, hdr->sh_type); | |
1902 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1903 | { |
1904 | /* Unrecognised OS-specific sections. */ | |
1905 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1906 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1907 | required to correctly process the section and the file should |
ff15b240 NC |
1908 | be rejected with an error message. */ |
1909 | (*_bfd_error_handler) | |
1910 | (_("%B: don't know how to handle OS specific section " | |
1911 | "`%s' [0x%8x]"), | |
1912 | abfd, name, hdr->sh_type); | |
1913 | else | |
1914 | /* Otherwise it should be processed. */ | |
1915 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1916 | } | |
3eb70a79 L |
1917 | else |
1918 | /* FIXME: We should handle this section. */ | |
1919 | (*_bfd_error_handler) | |
1920 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1921 | abfd, name, hdr->sh_type); | |
1922 | ||
1923 | return FALSE; | |
252b5132 RH |
1924 | } |
1925 | ||
b34976b6 | 1926 | return TRUE; |
252b5132 RH |
1927 | } |
1928 | ||
87d72d41 | 1929 | /* Return the local symbol specified by ABFD, R_SYMNDX. */ |
ec338859 | 1930 | |
87d72d41 AM |
1931 | Elf_Internal_Sym * |
1932 | bfd_sym_from_r_symndx (struct sym_cache *cache, | |
1933 | bfd *abfd, | |
1934 | unsigned long r_symndx) | |
ec338859 | 1935 | { |
ec338859 AM |
1936 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
1937 | ||
a5d1b3b5 AM |
1938 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
1939 | { | |
1940 | Elf_Internal_Shdr *symtab_hdr; | |
1941 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
1942 | Elf_External_Sym_Shndx eshndx; | |
ec338859 | 1943 | |
a5d1b3b5 AM |
1944 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1945 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
87d72d41 | 1946 | &cache->sym[ent], esym, &eshndx) == NULL) |
a5d1b3b5 | 1947 | return NULL; |
9ad5cbcf | 1948 | |
a5d1b3b5 AM |
1949 | if (cache->abfd != abfd) |
1950 | { | |
1951 | memset (cache->indx, -1, sizeof (cache->indx)); | |
1952 | cache->abfd = abfd; | |
1953 | } | |
1954 | cache->indx[ent] = r_symndx; | |
ec338859 | 1955 | } |
a5d1b3b5 | 1956 | |
87d72d41 | 1957 | return &cache->sym[ent]; |
ec338859 AM |
1958 | } |
1959 | ||
252b5132 RH |
1960 | /* Given an ELF section number, retrieve the corresponding BFD |
1961 | section. */ | |
1962 | ||
1963 | asection * | |
217aa764 | 1964 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 1965 | { |
9ad5cbcf | 1966 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
1967 | return NULL; |
1968 | return elf_elfsections (abfd)[index]->bfd_section; | |
1969 | } | |
1970 | ||
b35d266b | 1971 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 1972 | { |
0112cd26 NC |
1973 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1974 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1975 | }; |
1976 | ||
b35d266b | 1977 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 1978 | { |
0112cd26 NC |
1979 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1980 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1981 | }; |
1982 | ||
b35d266b | 1983 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 1984 | { |
0112cd26 NC |
1985 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1986 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1987 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
1988 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
1989 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
1990 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
1991 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
1992 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
1993 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
1994 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
1995 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1996 | }; |
1997 | ||
b35d266b | 1998 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 1999 | { |
0112cd26 NC |
2000 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2001 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2002 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2003 | }; |
2004 | ||
b35d266b | 2005 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2006 | { |
0112cd26 NC |
2007 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2008 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2009 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2010 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2011 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2012 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2013 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2014 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2015 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2016 | }; |
2017 | ||
b35d266b | 2018 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2019 | { |
0112cd26 NC |
2020 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2021 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2022 | }; |
2023 | ||
b35d266b | 2024 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2025 | { |
0112cd26 NC |
2026 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2027 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2028 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2029 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2030 | }; |
2031 | ||
b35d266b | 2032 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2033 | { |
0112cd26 NC |
2034 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2035 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2036 | }; |
2037 | ||
b35d266b | 2038 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2039 | { |
0112cd26 NC |
2040 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2041 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2042 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2043 | }; |
2044 | ||
b35d266b | 2045 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2046 | { |
0112cd26 NC |
2047 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2048 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2049 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2050 | }; |
2051 | ||
b35d266b | 2052 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2053 | { |
0112cd26 NC |
2054 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2055 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2056 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2057 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2058 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2059 | }; |
2060 | ||
b35d266b | 2061 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2062 | { |
0112cd26 NC |
2063 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2064 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2065 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2066 | /* See struct bfd_elf_special_section declaration for the semantics of |
2067 | this special case where .prefix_length != strlen (.prefix). */ | |
2068 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2069 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2070 | }; |
2071 | ||
b35d266b | 2072 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2073 | { |
0112cd26 NC |
2074 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2075 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2076 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2077 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2078 | }; |
2079 | ||
1b315056 CS |
2080 | static const struct bfd_elf_special_section special_sections_z[] = |
2081 | { | |
2082 | { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 }, | |
2083 | { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 }, | |
2084 | { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2085 | { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2086 | { NULL, 0, 0, 0, 0 } | |
2087 | }; | |
2088 | ||
b35d266b | 2089 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2090 | { |
7f4d3958 | 2091 | special_sections_b, /* 'b' */ |
98ece1b3 | 2092 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2093 | special_sections_d, /* 'd' */ |
2094 | NULL, /* 'e' */ | |
2095 | special_sections_f, /* 'f' */ | |
2096 | special_sections_g, /* 'g' */ | |
2097 | special_sections_h, /* 'h' */ | |
2098 | special_sections_i, /* 'i' */ | |
2099 | NULL, /* 'j' */ | |
2100 | NULL, /* 'k' */ | |
2101 | special_sections_l, /* 'l' */ | |
2102 | NULL, /* 'm' */ | |
2103 | special_sections_n, /* 'n' */ | |
2104 | NULL, /* 'o' */ | |
2105 | special_sections_p, /* 'p' */ | |
2106 | NULL, /* 'q' */ | |
2107 | special_sections_r, /* 'r' */ | |
2108 | special_sections_s, /* 's' */ | |
2109 | special_sections_t, /* 't' */ | |
1b315056 CS |
2110 | NULL, /* 'u' */ |
2111 | NULL, /* 'v' */ | |
2112 | NULL, /* 'w' */ | |
2113 | NULL, /* 'x' */ | |
2114 | NULL, /* 'y' */ | |
2115 | special_sections_z /* 'z' */ | |
7f4d3958 L |
2116 | }; |
2117 | ||
551b43fd AM |
2118 | const struct bfd_elf_special_section * |
2119 | _bfd_elf_get_special_section (const char *name, | |
2120 | const struct bfd_elf_special_section *spec, | |
2121 | unsigned int rela) | |
2f89ff8d L |
2122 | { |
2123 | int i; | |
7f4d3958 | 2124 | int len; |
7f4d3958 | 2125 | |
551b43fd | 2126 | len = strlen (name); |
7f4d3958 | 2127 | |
551b43fd | 2128 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2129 | { |
2130 | int suffix_len; | |
551b43fd | 2131 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2132 | |
2133 | if (len < prefix_len) | |
2134 | continue; | |
551b43fd | 2135 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2136 | continue; |
2137 | ||
551b43fd | 2138 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2139 | if (suffix_len <= 0) |
2140 | { | |
2141 | if (name[prefix_len] != 0) | |
2142 | { | |
2143 | if (suffix_len == 0) | |
2144 | continue; | |
2145 | if (name[prefix_len] != '.' | |
2146 | && (suffix_len == -2 | |
551b43fd | 2147 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2148 | continue; |
2149 | } | |
2150 | } | |
2151 | else | |
2152 | { | |
2153 | if (len < prefix_len + suffix_len) | |
2154 | continue; | |
2155 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2156 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2157 | suffix_len) != 0) |
2158 | continue; | |
2159 | } | |
551b43fd | 2160 | return &spec[i]; |
7dcb9820 | 2161 | } |
2f89ff8d L |
2162 | |
2163 | return NULL; | |
2164 | } | |
2165 | ||
7dcb9820 | 2166 | const struct bfd_elf_special_section * |
29ef7005 | 2167 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2168 | { |
551b43fd AM |
2169 | int i; |
2170 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2171 | const struct elf_backend_data *bed; |
2f89ff8d L |
2172 | |
2173 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2174 | if (sec->name == NULL) |
2175 | return NULL; | |
2f89ff8d | 2176 | |
29ef7005 L |
2177 | bed = get_elf_backend_data (abfd); |
2178 | spec = bed->special_sections; | |
2179 | if (spec) | |
2180 | { | |
2181 | spec = _bfd_elf_get_special_section (sec->name, | |
2182 | bed->special_sections, | |
2183 | sec->use_rela_p); | |
2184 | if (spec != NULL) | |
2185 | return spec; | |
2186 | } | |
2187 | ||
551b43fd AM |
2188 | if (sec->name[0] != '.') |
2189 | return NULL; | |
2f89ff8d | 2190 | |
551b43fd | 2191 | i = sec->name[1] - 'b'; |
1b315056 | 2192 | if (i < 0 || i > 'z' - 'b') |
551b43fd AM |
2193 | return NULL; |
2194 | ||
2195 | spec = special_sections[i]; | |
2f89ff8d | 2196 | |
551b43fd AM |
2197 | if (spec == NULL) |
2198 | return NULL; | |
2199 | ||
2200 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2201 | } |
2202 | ||
b34976b6 | 2203 | bfd_boolean |
217aa764 | 2204 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2205 | { |
2206 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2207 | const struct elf_backend_data *bed; |
7dcb9820 | 2208 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2209 | |
f0abc2a1 AM |
2210 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2211 | if (sdata == NULL) | |
2212 | { | |
217aa764 | 2213 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2214 | if (sdata == NULL) |
2215 | return FALSE; | |
217aa764 | 2216 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2217 | } |
bf572ba0 | 2218 | |
551b43fd AM |
2219 | /* Indicate whether or not this section should use RELA relocations. */ |
2220 | bed = get_elf_backend_data (abfd); | |
2221 | sec->use_rela_p = bed->default_use_rela_p; | |
2222 | ||
e843e0f8 L |
2223 | /* When we read a file, we don't need to set ELF section type and |
2224 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2225 | anyway. We will set ELF section type and flags for all linker | |
2226 | created sections. If user specifies BFD section flags, we will | |
2227 | set ELF section type and flags based on BFD section flags in | |
2228 | elf_fake_sections. */ | |
2229 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2230 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2231 | { |
551b43fd | 2232 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2233 | if (ssect != NULL) |
2234 | { | |
2235 | elf_section_type (sec) = ssect->type; | |
2236 | elf_section_flags (sec) = ssect->attr; | |
2237 | } | |
2f89ff8d L |
2238 | } |
2239 | ||
f592407e | 2240 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2241 | } |
2242 | ||
2243 | /* Create a new bfd section from an ELF program header. | |
2244 | ||
2245 | Since program segments have no names, we generate a synthetic name | |
2246 | of the form segment<NUM>, where NUM is generally the index in the | |
2247 | program header table. For segments that are split (see below) we | |
2248 | generate the names segment<NUM>a and segment<NUM>b. | |
2249 | ||
2250 | Note that some program segments may have a file size that is different than | |
2251 | (less than) the memory size. All this means is that at execution the | |
2252 | system must allocate the amount of memory specified by the memory size, | |
2253 | but only initialize it with the first "file size" bytes read from the | |
2254 | file. This would occur for example, with program segments consisting | |
2255 | of combined data+bss. | |
2256 | ||
2257 | To handle the above situation, this routine generates TWO bfd sections | |
2258 | for the single program segment. The first has the length specified by | |
2259 | the file size of the segment, and the second has the length specified | |
2260 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2261 | into its initialized and uninitialized parts. |
252b5132 RH |
2262 | |
2263 | */ | |
2264 | ||
b34976b6 | 2265 | bfd_boolean |
217aa764 AM |
2266 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2267 | Elf_Internal_Phdr *hdr, | |
2268 | int index, | |
2269 | const char *typename) | |
252b5132 RH |
2270 | { |
2271 | asection *newsect; | |
2272 | char *name; | |
2273 | char namebuf[64]; | |
d4c88bbb | 2274 | size_t len; |
252b5132 RH |
2275 | int split; |
2276 | ||
2277 | split = ((hdr->p_memsz > 0) | |
2278 | && (hdr->p_filesz > 0) | |
2279 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2280 | |
2281 | if (hdr->p_filesz > 0) | |
252b5132 | 2282 | { |
d5191d0c AM |
2283 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
2284 | len = strlen (namebuf) + 1; | |
2285 | name = bfd_alloc (abfd, len); | |
2286 | if (!name) | |
2287 | return FALSE; | |
2288 | memcpy (name, namebuf, len); | |
2289 | newsect = bfd_make_section (abfd, name); | |
2290 | if (newsect == NULL) | |
2291 | return FALSE; | |
2292 | newsect->vma = hdr->p_vaddr; | |
2293 | newsect->lma = hdr->p_paddr; | |
2294 | newsect->size = hdr->p_filesz; | |
2295 | newsect->filepos = hdr->p_offset; | |
2296 | newsect->flags |= SEC_HAS_CONTENTS; | |
2297 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2298 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2299 | { |
d5191d0c AM |
2300 | newsect->flags |= SEC_ALLOC; |
2301 | newsect->flags |= SEC_LOAD; | |
2302 | if (hdr->p_flags & PF_X) | |
2303 | { | |
2304 | /* FIXME: all we known is that it has execute PERMISSION, | |
2305 | may be data. */ | |
2306 | newsect->flags |= SEC_CODE; | |
2307 | } | |
2308 | } | |
2309 | if (!(hdr->p_flags & PF_W)) | |
2310 | { | |
2311 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2312 | } |
252b5132 RH |
2313 | } |
2314 | ||
d5191d0c | 2315 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2316 | { |
d5191d0c AM |
2317 | bfd_vma align; |
2318 | ||
2319 | sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : ""); | |
d4c88bbb | 2320 | len = strlen (namebuf) + 1; |
217aa764 | 2321 | name = bfd_alloc (abfd, len); |
252b5132 | 2322 | if (!name) |
b34976b6 | 2323 | return FALSE; |
d4c88bbb | 2324 | memcpy (name, namebuf, len); |
252b5132 RH |
2325 | newsect = bfd_make_section (abfd, name); |
2326 | if (newsect == NULL) | |
b34976b6 | 2327 | return FALSE; |
252b5132 RH |
2328 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2329 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2330 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2331 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2332 | align = newsect->vma & -newsect->vma; | |
2333 | if (align == 0 || align > hdr->p_align) | |
2334 | align = hdr->p_align; | |
2335 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2336 | if (hdr->p_type == PT_LOAD) |
2337 | { | |
d5191d0c AM |
2338 | /* Hack for gdb. Segments that have not been modified do |
2339 | not have their contents written to a core file, on the | |
2340 | assumption that a debugger can find the contents in the | |
2341 | executable. We flag this case by setting the fake | |
2342 | section size to zero. Note that "real" bss sections will | |
2343 | always have their contents dumped to the core file. */ | |
2344 | if (bfd_get_format (abfd) == bfd_core) | |
2345 | newsect->size = 0; | |
252b5132 RH |
2346 | newsect->flags |= SEC_ALLOC; |
2347 | if (hdr->p_flags & PF_X) | |
2348 | newsect->flags |= SEC_CODE; | |
2349 | } | |
2350 | if (!(hdr->p_flags & PF_W)) | |
2351 | newsect->flags |= SEC_READONLY; | |
2352 | } | |
2353 | ||
b34976b6 | 2354 | return TRUE; |
252b5132 RH |
2355 | } |
2356 | ||
b34976b6 | 2357 | bfd_boolean |
217aa764 | 2358 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2359 | { |
9c5bfbb7 | 2360 | const struct elf_backend_data *bed; |
20cfcaae NC |
2361 | |
2362 | switch (hdr->p_type) | |
2363 | { | |
2364 | case PT_NULL: | |
2365 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2366 | ||
2367 | case PT_LOAD: | |
2368 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2369 | ||
2370 | case PT_DYNAMIC: | |
2371 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2372 | ||
2373 | case PT_INTERP: | |
2374 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2375 | ||
2376 | case PT_NOTE: | |
2377 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2378 | return FALSE; |
718175fa | 2379 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2380 | return FALSE; |
2381 | return TRUE; | |
20cfcaae NC |
2382 | |
2383 | case PT_SHLIB: | |
2384 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2385 | ||
2386 | case PT_PHDR: | |
2387 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2388 | ||
811072d8 RM |
2389 | case PT_GNU_EH_FRAME: |
2390 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2391 | "eh_frame_hdr"); | |
2392 | ||
2b05f1b7 L |
2393 | case PT_GNU_STACK: |
2394 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
9ee5e499 | 2395 | |
8c37241b JJ |
2396 | case PT_GNU_RELRO: |
2397 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2398 | ||
20cfcaae | 2399 | default: |
8c1acd09 | 2400 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2401 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2402 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2403 | } |
2404 | } | |
2405 | ||
23bc299b | 2406 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2407 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2408 | relocations; otherwise, we use REL relocations. */ |
2409 | ||
b34976b6 | 2410 | bfd_boolean |
217aa764 AM |
2411 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2412 | Elf_Internal_Shdr *rel_hdr, | |
2413 | asection *asect, | |
2414 | bfd_boolean use_rela_p) | |
23bc299b MM |
2415 | { |
2416 | char *name; | |
9c5bfbb7 | 2417 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2418 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2419 | |
dc810e39 | 2420 | name = bfd_alloc (abfd, amt); |
23bc299b | 2421 | if (name == NULL) |
b34976b6 | 2422 | return FALSE; |
23bc299b MM |
2423 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2424 | rel_hdr->sh_name = | |
2b0f7ef9 | 2425 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2426 | FALSE); |
23bc299b | 2427 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2428 | return FALSE; |
23bc299b MM |
2429 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2430 | rel_hdr->sh_entsize = (use_rela_p | |
2431 | ? bed->s->sizeof_rela | |
2432 | : bed->s->sizeof_rel); | |
72de5009 | 2433 | rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
23bc299b MM |
2434 | rel_hdr->sh_flags = 0; |
2435 | rel_hdr->sh_addr = 0; | |
2436 | rel_hdr->sh_size = 0; | |
2437 | rel_hdr->sh_offset = 0; | |
2438 | ||
b34976b6 | 2439 | return TRUE; |
23bc299b MM |
2440 | } |
2441 | ||
252b5132 RH |
2442 | /* Set up an ELF internal section header for a section. */ |
2443 | ||
252b5132 | 2444 | static void |
217aa764 | 2445 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2446 | { |
9c5bfbb7 | 2447 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2448 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2449 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2450 | unsigned int sh_type; |
252b5132 RH |
2451 | |
2452 | if (*failedptr) | |
2453 | { | |
2454 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2455 | loop. */ |
252b5132 RH |
2456 | return; |
2457 | } | |
2458 | ||
2459 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2460 | ||
e57b5356 AM |
2461 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2462 | asect->name, FALSE); | |
2463 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2464 | { |
b34976b6 | 2465 | *failedptr = TRUE; |
252b5132 RH |
2466 | return; |
2467 | } | |
2468 | ||
a4d8e49b | 2469 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2470 | |
2471 | if ((asect->flags & SEC_ALLOC) != 0 | |
2472 | || asect->user_set_vma) | |
2473 | this_hdr->sh_addr = asect->vma; | |
2474 | else | |
2475 | this_hdr->sh_addr = 0; | |
2476 | ||
2477 | this_hdr->sh_offset = 0; | |
eea6121a | 2478 | this_hdr->sh_size = asect->size; |
252b5132 | 2479 | this_hdr->sh_link = 0; |
72de5009 | 2480 | this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power; |
252b5132 RH |
2481 | /* The sh_entsize and sh_info fields may have been set already by |
2482 | copy_private_section_data. */ | |
2483 | ||
2484 | this_hdr->bfd_section = asect; | |
2485 | this_hdr->contents = NULL; | |
2486 | ||
3cddba1e L |
2487 | /* If the section type is unspecified, we set it based on |
2488 | asect->flags. */ | |
98ece1b3 AM |
2489 | if ((asect->flags & SEC_GROUP) != 0) |
2490 | sh_type = SHT_GROUP; | |
2491 | else if ((asect->flags & SEC_ALLOC) != 0 | |
2492 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
2493 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2494 | sh_type = SHT_NOBITS; | |
2495 | else | |
2496 | sh_type = SHT_PROGBITS; | |
2497 | ||
3cddba1e | 2498 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
2499 | this_hdr->sh_type = sh_type; |
2500 | else if (this_hdr->sh_type == SHT_NOBITS | |
2501 | && sh_type == SHT_PROGBITS | |
2502 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 2503 | { |
98ece1b3 AM |
2504 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
2505 | allow the link to proceed. This can happen when users link | |
2506 | non-bss input sections to bss output sections, or emit data | |
2507 | to a bss output section via a linker script. */ | |
2508 | (*_bfd_error_handler) | |
58f0869b | 2509 | (_("warning: section `%A' type changed to PROGBITS"), asect); |
98ece1b3 | 2510 | this_hdr->sh_type = sh_type; |
3cddba1e L |
2511 | } |
2512 | ||
2f89ff8d | 2513 | switch (this_hdr->sh_type) |
252b5132 | 2514 | { |
2f89ff8d | 2515 | default: |
2f89ff8d L |
2516 | break; |
2517 | ||
2518 | case SHT_STRTAB: | |
2519 | case SHT_INIT_ARRAY: | |
2520 | case SHT_FINI_ARRAY: | |
2521 | case SHT_PREINIT_ARRAY: | |
2522 | case SHT_NOTE: | |
2523 | case SHT_NOBITS: | |
2524 | case SHT_PROGBITS: | |
2525 | break; | |
2526 | ||
2527 | case SHT_HASH: | |
c7ac6ff8 | 2528 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2529 | break; |
5de3bf90 | 2530 | |
2f89ff8d | 2531 | case SHT_DYNSYM: |
252b5132 | 2532 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2533 | break; |
2534 | ||
2535 | case SHT_DYNAMIC: | |
252b5132 | 2536 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2537 | break; |
2538 | ||
2539 | case SHT_RELA: | |
2540 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2541 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2542 | break; | |
2543 | ||
2544 | case SHT_REL: | |
2545 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2546 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2547 | break; | |
2548 | ||
2549 | case SHT_GNU_versym: | |
252b5132 | 2550 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2551 | break; |
2552 | ||
2553 | case SHT_GNU_verdef: | |
252b5132 RH |
2554 | this_hdr->sh_entsize = 0; |
2555 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2556 | cverdefs. The linker will set cverdefs, but sh_info will be |
2557 | zero. */ | |
252b5132 RH |
2558 | if (this_hdr->sh_info == 0) |
2559 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2560 | else | |
2561 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2562 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2563 | break; |
2564 | ||
2565 | case SHT_GNU_verneed: | |
252b5132 RH |
2566 | this_hdr->sh_entsize = 0; |
2567 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2568 | cverrefs. The linker will set cverrefs, but sh_info will be |
2569 | zero. */ | |
252b5132 RH |
2570 | if (this_hdr->sh_info == 0) |
2571 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2572 | else | |
2573 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2574 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2575 | break; |
2576 | ||
2577 | case SHT_GROUP: | |
1783205a | 2578 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2579 | break; |
fdc90cb4 JJ |
2580 | |
2581 | case SHT_GNU_HASH: | |
2582 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2583 | break; | |
dbb410c3 | 2584 | } |
252b5132 RH |
2585 | |
2586 | if ((asect->flags & SEC_ALLOC) != 0) | |
2587 | this_hdr->sh_flags |= SHF_ALLOC; | |
2588 | if ((asect->flags & SEC_READONLY) == 0) | |
2589 | this_hdr->sh_flags |= SHF_WRITE; | |
2590 | if ((asect->flags & SEC_CODE) != 0) | |
2591 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2592 | if ((asect->flags & SEC_MERGE) != 0) |
2593 | { | |
2594 | this_hdr->sh_flags |= SHF_MERGE; | |
2595 | this_hdr->sh_entsize = asect->entsize; | |
2596 | if ((asect->flags & SEC_STRINGS) != 0) | |
2597 | this_hdr->sh_flags |= SHF_STRINGS; | |
2598 | } | |
1126897b | 2599 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2600 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2601 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2602 | { |
2603 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2604 | if (asect->size == 0 |
2605 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2606 | { |
3a800eb9 | 2607 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2608 | |
704afa60 | 2609 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2610 | if (o != NULL) |
2611 | { | |
704afa60 | 2612 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2613 | if (this_hdr->sh_size != 0) |
2614 | this_hdr->sh_type = SHT_NOBITS; | |
2615 | } | |
704afa60 JJ |
2616 | } |
2617 | } | |
252b5132 RH |
2618 | |
2619 | /* Check for processor-specific section types. */ | |
0414f35b | 2620 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2621 | if (bed->elf_backend_fake_sections |
2622 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2623 | *failedptr = TRUE; |
252b5132 | 2624 | |
42bb2e33 | 2625 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2626 | { |
2627 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2628 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2629 | this_hdr->sh_type = sh_type; |
2630 | } | |
2631 | ||
252b5132 | 2632 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2633 | SHT_REL[A] section. If two relocation sections are required for |
2634 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2635 | create the other. */ |
23bc299b | 2636 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2637 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2638 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2639 | asect, |
68bfbfcc | 2640 | asect->use_rela_p)) |
b34976b6 | 2641 | *failedptr = TRUE; |
252b5132 RH |
2642 | } |
2643 | ||
bcacc0f5 AM |
2644 | /* Fill in the contents of a SHT_GROUP section. Called from |
2645 | _bfd_elf_compute_section_file_positions for gas, objcopy, and | |
2646 | when ELF targets use the generic linker, ld. Called for ld -r | |
2647 | from bfd_elf_final_link. */ | |
dbb410c3 | 2648 | |
1126897b | 2649 | void |
217aa764 | 2650 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2651 | { |
217aa764 | 2652 | bfd_boolean *failedptr = failedptrarg; |
9dce4196 | 2653 | asection *elt, *first; |
dbb410c3 | 2654 | unsigned char *loc; |
b34976b6 | 2655 | bfd_boolean gas; |
dbb410c3 | 2656 | |
7e4111ad L |
2657 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2658 | elfxx-ia64.c. */ | |
2659 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2660 | || *failedptr) |
2661 | return; | |
2662 | ||
bcacc0f5 AM |
2663 | if (elf_section_data (sec)->this_hdr.sh_info == 0) |
2664 | { | |
2665 | unsigned long symindx = 0; | |
2666 | ||
2667 | /* elf_group_id will have been set up by objcopy and the | |
2668 | generic linker. */ | |
2669 | if (elf_group_id (sec) != NULL) | |
2670 | symindx = elf_group_id (sec)->udata.i; | |
1126897b | 2671 | |
bcacc0f5 AM |
2672 | if (symindx == 0) |
2673 | { | |
2674 | /* If called from the assembler, swap_out_syms will have set up | |
2675 | elf_section_syms. */ | |
2676 | BFD_ASSERT (elf_section_syms (abfd) != NULL); | |
2677 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2678 | } | |
2679 | elf_section_data (sec)->this_hdr.sh_info = symindx; | |
2680 | } | |
2681 | else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2) | |
1126897b | 2682 | { |
bcacc0f5 AM |
2683 | /* The ELF backend linker sets sh_info to -2 when the group |
2684 | signature symbol is global, and thus the index can't be | |
2685 | set until all local symbols are output. */ | |
2686 | asection *igroup = elf_sec_group (elf_next_in_group (sec)); | |
2687 | struct bfd_elf_section_data *sec_data = elf_section_data (igroup); | |
2688 | unsigned long symndx = sec_data->this_hdr.sh_info; | |
2689 | unsigned long extsymoff = 0; | |
2690 | struct elf_link_hash_entry *h; | |
2691 | ||
2692 | if (!elf_bad_symtab (igroup->owner)) | |
2693 | { | |
2694 | Elf_Internal_Shdr *symtab_hdr; | |
2695 | ||
2696 | symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr; | |
2697 | extsymoff = symtab_hdr->sh_info; | |
2698 | } | |
2699 | h = elf_sym_hashes (igroup->owner)[symndx - extsymoff]; | |
2700 | while (h->root.type == bfd_link_hash_indirect | |
2701 | || h->root.type == bfd_link_hash_warning) | |
2702 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2703 | ||
2704 | elf_section_data (sec)->this_hdr.sh_info = h->indx; | |
1126897b | 2705 | } |
dbb410c3 | 2706 | |
1126897b | 2707 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2708 | gas = TRUE; |
dbb410c3 AM |
2709 | if (sec->contents == NULL) |
2710 | { | |
b34976b6 | 2711 | gas = FALSE; |
eea6121a | 2712 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2713 | |
2714 | /* Arrange for the section to be written out. */ | |
2715 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2716 | if (sec->contents == NULL) |
2717 | { | |
b34976b6 | 2718 | *failedptr = TRUE; |
dbb410c3 AM |
2719 | return; |
2720 | } | |
2721 | } | |
2722 | ||
eea6121a | 2723 | loc = sec->contents + sec->size; |
dbb410c3 | 2724 | |
9dce4196 AM |
2725 | /* Get the pointer to the first section in the group that gas |
2726 | squirreled away here. objcopy arranges for this to be set to the | |
2727 | start of the input section group. */ | |
2728 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2729 | |
2730 | /* First element is a flag word. Rest of section is elf section | |
2731 | indices for all the sections of the group. Write them backwards | |
2732 | just to keep the group in the same order as given in .section | |
2733 | directives, not that it matters. */ | |
2734 | while (elt != NULL) | |
2735 | { | |
9dce4196 AM |
2736 | asection *s; |
2737 | unsigned int idx; | |
2738 | ||
9dce4196 | 2739 | s = elt; |
01e1a5bc NC |
2740 | if (! elf_discarded_section (s)) |
2741 | { | |
2742 | loc -= 4; | |
2743 | if (!gas) | |
2744 | s = s->output_section; | |
2745 | idx = 0; | |
2746 | if (s != NULL) | |
2747 | idx = elf_section_data (s)->this_idx; | |
2748 | H_PUT_32 (abfd, idx, loc); | |
2749 | } | |
945906ff | 2750 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2751 | if (elt == first) |
2752 | break; | |
dbb410c3 AM |
2753 | } |
2754 | ||
3d7f7666 | 2755 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2756 | abort (); |
dbb410c3 | 2757 | |
9dce4196 | 2758 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2759 | } |
2760 | ||
252b5132 RH |
2761 | /* Assign all ELF section numbers. The dummy first section is handled here |
2762 | too. The link/info pointers for the standard section types are filled | |
2763 | in here too, while we're at it. */ | |
2764 | ||
b34976b6 | 2765 | static bfd_boolean |
da9f89d4 | 2766 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2767 | { |
2768 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2769 | asection *sec; | |
2b0f7ef9 | 2770 | unsigned int section_number, secn; |
252b5132 | 2771 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2772 | struct bfd_elf_section_data *d; |
3516e984 | 2773 | bfd_boolean need_symtab; |
252b5132 RH |
2774 | |
2775 | section_number = 1; | |
2776 | ||
2b0f7ef9 JJ |
2777 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2778 | ||
da9f89d4 L |
2779 | /* SHT_GROUP sections are in relocatable files only. */ |
2780 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2781 | { |
da9f89d4 | 2782 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2783 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2784 | { |
5daa8fe7 | 2785 | d = elf_section_data (sec); |
da9f89d4 L |
2786 | |
2787 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2788 | { |
5daa8fe7 | 2789 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2790 | { |
2791 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2792 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2793 | abfd->section_count--; |
da9f89d4 | 2794 | } |
08a40648 | 2795 | else |
4fbb74a6 | 2796 | d->this_idx = section_number++; |
da9f89d4 | 2797 | } |
47cc2cf5 PB |
2798 | } |
2799 | } | |
2800 | ||
2801 | for (sec = abfd->sections; sec; sec = sec->next) | |
2802 | { | |
2803 | d = elf_section_data (sec); | |
2804 | ||
2805 | if (d->this_hdr.sh_type != SHT_GROUP) | |
4fbb74a6 | 2806 | d->this_idx = section_number++; |
2b0f7ef9 | 2807 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2808 | if ((sec->flags & SEC_RELOC) == 0) |
2809 | d->rel_idx = 0; | |
2810 | else | |
2b0f7ef9 JJ |
2811 | { |
2812 | d->rel_idx = section_number++; | |
2813 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2814 | } | |
23bc299b MM |
2815 | |
2816 | if (d->rel_hdr2) | |
2b0f7ef9 JJ |
2817 | { |
2818 | d->rel_idx2 = section_number++; | |
2819 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2820 | } | |
23bc299b MM |
2821 | else |
2822 | d->rel_idx2 = 0; | |
252b5132 RH |
2823 | } |
2824 | ||
2825 | t->shstrtab_section = section_number++; | |
2b0f7ef9 | 2826 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2827 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 | 2828 | |
3516e984 L |
2829 | need_symtab = (bfd_get_symcount (abfd) > 0 |
2830 | || (link_info == NULL | |
2831 | && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
2832 | == HAS_RELOC))); | |
2833 | if (need_symtab) | |
252b5132 RH |
2834 | { |
2835 | t->symtab_section = section_number++; | |
2b0f7ef9 | 2836 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
4fbb74a6 | 2837 | if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF)) |
9ad5cbcf | 2838 | { |
9ad5cbcf AM |
2839 | t->symtab_shndx_section = section_number++; |
2840 | t->symtab_shndx_hdr.sh_name | |
2841 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2842 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2843 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2844 | return FALSE; |
9ad5cbcf | 2845 | } |
252b5132 | 2846 | t->strtab_section = section_number++; |
2b0f7ef9 | 2847 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2848 | } |
2849 | ||
2b0f7ef9 JJ |
2850 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2851 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2852 | |
2853 | elf_numsections (abfd) = section_number; | |
252b5132 RH |
2854 | elf_elfheader (abfd)->e_shnum = section_number; |
2855 | ||
2856 | /* Set up the list of section header pointers, in agreement with the | |
2857 | indices. */ | |
d0fb9a8d | 2858 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 2859 | if (i_shdrp == NULL) |
b34976b6 | 2860 | return FALSE; |
252b5132 | 2861 | |
d0fb9a8d | 2862 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
2863 | if (i_shdrp[0] == NULL) |
2864 | { | |
2865 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2866 | return FALSE; |
252b5132 | 2867 | } |
252b5132 RH |
2868 | |
2869 | elf_elfsections (abfd) = i_shdrp; | |
2870 | ||
2871 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3516e984 | 2872 | if (need_symtab) |
252b5132 RH |
2873 | { |
2874 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
4fbb74a6 | 2875 | if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF)) |
9ad5cbcf AM |
2876 | { |
2877 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2878 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2879 | } | |
252b5132 RH |
2880 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2881 | t->symtab_hdr.sh_link = t->strtab_section; | |
2882 | } | |
38ce5b11 | 2883 | |
252b5132 RH |
2884 | for (sec = abfd->sections; sec; sec = sec->next) |
2885 | { | |
2886 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2887 | asection *s; | |
2888 | const char *name; | |
2889 | ||
2890 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2891 | if (d->rel_idx != 0) | |
2892 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2893 | if (d->rel_idx2 != 0) |
2894 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2895 | |
2896 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2897 | ||
2898 | /* sh_link of a reloc section is the section index of the symbol | |
2899 | table. sh_info is the section index of the section to which | |
2900 | the relocation entries apply. */ | |
2901 | if (d->rel_idx != 0) | |
2902 | { | |
2903 | d->rel_hdr.sh_link = t->symtab_section; | |
2904 | d->rel_hdr.sh_info = d->this_idx; | |
2905 | } | |
23bc299b MM |
2906 | if (d->rel_idx2 != 0) |
2907 | { | |
2908 | d->rel_hdr2->sh_link = t->symtab_section; | |
2909 | d->rel_hdr2->sh_info = d->this_idx; | |
2910 | } | |
252b5132 | 2911 | |
38ce5b11 L |
2912 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2913 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2914 | { | |
2915 | s = elf_linked_to_section (sec); | |
2916 | if (s) | |
38ce5b11 | 2917 | { |
f2876037 | 2918 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 2919 | if (link_info != NULL) |
38ce5b11 | 2920 | { |
f2876037 | 2921 | /* Check discarded linkonce section. */ |
ccd2ec6a | 2922 | if (elf_discarded_section (s)) |
38ce5b11 | 2923 | { |
ccd2ec6a L |
2924 | asection *kept; |
2925 | (*_bfd_error_handler) | |
2926 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2927 | abfd, d->this_hdr.bfd_section, | |
2928 | s, s->owner); | |
2929 | /* Point to the kept section if it has the same | |
2930 | size as the discarded one. */ | |
c0f00686 | 2931 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 2932 | if (kept == NULL) |
185d09ad | 2933 | { |
ccd2ec6a L |
2934 | bfd_set_error (bfd_error_bad_value); |
2935 | return FALSE; | |
185d09ad | 2936 | } |
ccd2ec6a | 2937 | s = kept; |
38ce5b11 | 2938 | } |
e424ecc8 | 2939 | |
ccd2ec6a L |
2940 | s = s->output_section; |
2941 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 2942 | } |
f2876037 L |
2943 | else |
2944 | { | |
2945 | /* Handle objcopy. */ | |
2946 | if (s->output_section == NULL) | |
2947 | { | |
2948 | (*_bfd_error_handler) | |
2949 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
2950 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
2951 | bfd_set_error (bfd_error_bad_value); | |
2952 | return FALSE; | |
2953 | } | |
2954 | s = s->output_section; | |
2955 | } | |
ccd2ec6a L |
2956 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
2957 | } | |
2958 | else | |
2959 | { | |
2960 | /* PR 290: | |
2961 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2962 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
2963 | sh_info fields. Hence we could get the situation | |
08a40648 | 2964 | where s is NULL. */ |
ccd2ec6a L |
2965 | const struct elf_backend_data *bed |
2966 | = get_elf_backend_data (abfd); | |
2967 | if (bed->link_order_error_handler) | |
2968 | bed->link_order_error_handler | |
2969 | (_("%B: warning: sh_link not set for section `%A'"), | |
2970 | abfd, sec); | |
38ce5b11 L |
2971 | } |
2972 | } | |
2973 | ||
252b5132 RH |
2974 | switch (d->this_hdr.sh_type) |
2975 | { | |
2976 | case SHT_REL: | |
2977 | case SHT_RELA: | |
2978 | /* A reloc section which we are treating as a normal BFD | |
2979 | section. sh_link is the section index of the symbol | |
2980 | table. sh_info is the section index of the section to | |
2981 | which the relocation entries apply. We assume that an | |
2982 | allocated reloc section uses the dynamic symbol table. | |
2983 | FIXME: How can we be sure? */ | |
2984 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2985 | if (s != NULL) | |
2986 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2987 | ||
2988 | /* We look up the section the relocs apply to by name. */ | |
2989 | name = sec->name; | |
2990 | if (d->this_hdr.sh_type == SHT_REL) | |
2991 | name += 4; | |
2992 | else | |
2993 | name += 5; | |
2994 | s = bfd_get_section_by_name (abfd, name); | |
2995 | if (s != NULL) | |
2996 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
2997 | break; | |
2998 | ||
2999 | case SHT_STRTAB: | |
3000 | /* We assume that a section named .stab*str is a stabs | |
3001 | string section. We look for a section with the same name | |
3002 | but without the trailing ``str'', and set its sh_link | |
3003 | field to point to this section. */ | |
0112cd26 | 3004 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3005 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3006 | { | |
3007 | size_t len; | |
3008 | char *alc; | |
3009 | ||
3010 | len = strlen (sec->name); | |
217aa764 | 3011 | alc = bfd_malloc (len - 2); |
252b5132 | 3012 | if (alc == NULL) |
b34976b6 | 3013 | return FALSE; |
d4c88bbb | 3014 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3015 | alc[len - 3] = '\0'; |
3016 | s = bfd_get_section_by_name (abfd, alc); | |
3017 | free (alc); | |
3018 | if (s != NULL) | |
3019 | { | |
3020 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3021 | ||
3022 | /* This is a .stab section. */ | |
0594c12d AM |
3023 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3024 | elf_section_data (s)->this_hdr.sh_entsize | |
3025 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3026 | } |
3027 | } | |
3028 | break; | |
3029 | ||
3030 | case SHT_DYNAMIC: | |
3031 | case SHT_DYNSYM: | |
3032 | case SHT_GNU_verneed: | |
3033 | case SHT_GNU_verdef: | |
3034 | /* sh_link is the section header index of the string table | |
3035 | used for the dynamic entries, or the symbol table, or the | |
3036 | version strings. */ | |
3037 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3038 | if (s != NULL) | |
3039 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3040 | break; | |
3041 | ||
7f1204bb JJ |
3042 | case SHT_GNU_LIBLIST: |
3043 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3044 | list used for the dynamic entries, or the symbol table, or |
3045 | the version strings. */ | |
7f1204bb JJ |
3046 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3047 | ? ".dynstr" : ".gnu.libstr"); | |
3048 | if (s != NULL) | |
3049 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3050 | break; | |
3051 | ||
252b5132 | 3052 | case SHT_HASH: |
fdc90cb4 | 3053 | case SHT_GNU_HASH: |
252b5132 RH |
3054 | case SHT_GNU_versym: |
3055 | /* sh_link is the section header index of the symbol table | |
3056 | this hash table or version table is for. */ | |
3057 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3058 | if (s != NULL) | |
3059 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3060 | break; | |
dbb410c3 AM |
3061 | |
3062 | case SHT_GROUP: | |
3063 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3064 | } |
3065 | } | |
3066 | ||
2b0f7ef9 | 3067 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3068 | if (i_shdrp[secn] == NULL) |
3069 | i_shdrp[secn] = i_shdrp[0]; | |
3070 | else | |
3071 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3072 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3073 | return TRUE; |
252b5132 RH |
3074 | } |
3075 | ||
3076 | /* Map symbol from it's internal number to the external number, moving | |
3077 | all local symbols to be at the head of the list. */ | |
3078 | ||
5372391b | 3079 | static bfd_boolean |
217aa764 | 3080 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3081 | { |
3082 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3083 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3084 | if (bed->elf_backend_sym_is_global) |
3085 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 | 3086 | |
e47bf690 | 3087 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0 |
252b5132 RH |
3088 | || bfd_is_und_section (bfd_get_section (sym)) |
3089 | || bfd_is_com_section (bfd_get_section (sym))); | |
3090 | } | |
3091 | ||
5372391b | 3092 | /* Don't output section symbols for sections that are not going to be |
0f0a5e58 | 3093 | output. */ |
5372391b AM |
3094 | |
3095 | static bfd_boolean | |
3096 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3097 | { | |
3098 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
0f0a5e58 AM |
3099 | && !(sym->section->owner == abfd |
3100 | || (sym->section->output_section->owner == abfd | |
3101 | && sym->section->output_offset == 0))); | |
5372391b AM |
3102 | } |
3103 | ||
b34976b6 | 3104 | static bfd_boolean |
217aa764 | 3105 | elf_map_symbols (bfd *abfd) |
252b5132 | 3106 | { |
dc810e39 | 3107 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3108 | asymbol **syms = bfd_get_outsymbols (abfd); |
3109 | asymbol **sect_syms; | |
dc810e39 AM |
3110 | unsigned int num_locals = 0; |
3111 | unsigned int num_globals = 0; | |
3112 | unsigned int num_locals2 = 0; | |
3113 | unsigned int num_globals2 = 0; | |
252b5132 | 3114 | int max_index = 0; |
dc810e39 | 3115 | unsigned int idx; |
252b5132 RH |
3116 | asection *asect; |
3117 | asymbol **new_syms; | |
252b5132 RH |
3118 | |
3119 | #ifdef DEBUG | |
3120 | fprintf (stderr, "elf_map_symbols\n"); | |
3121 | fflush (stderr); | |
3122 | #endif | |
3123 | ||
252b5132 RH |
3124 | for (asect = abfd->sections; asect; asect = asect->next) |
3125 | { | |
3126 | if (max_index < asect->index) | |
3127 | max_index = asect->index; | |
3128 | } | |
3129 | ||
3130 | max_index++; | |
d0fb9a8d | 3131 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3132 | if (sect_syms == NULL) |
b34976b6 | 3133 | return FALSE; |
252b5132 | 3134 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3135 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3136 | |
079e9a2f AM |
3137 | /* Init sect_syms entries for any section symbols we have already |
3138 | decided to output. */ | |
252b5132 RH |
3139 | for (idx = 0; idx < symcount; idx++) |
3140 | { | |
dc810e39 | 3141 | asymbol *sym = syms[idx]; |
c044fabd | 3142 | |
252b5132 | 3143 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
0f0a5e58 | 3144 | && sym->value == 0 |
5372391b | 3145 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3146 | { |
5372391b | 3147 | asection *sec = sym->section; |
252b5132 | 3148 | |
5372391b AM |
3149 | if (sec->owner != abfd) |
3150 | sec = sec->output_section; | |
252b5132 | 3151 | |
5372391b | 3152 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3153 | } |
3154 | } | |
3155 | ||
252b5132 RH |
3156 | /* Classify all of the symbols. */ |
3157 | for (idx = 0; idx < symcount; idx++) | |
3158 | { | |
5372391b AM |
3159 | if (ignore_section_sym (abfd, syms[idx])) |
3160 | continue; | |
252b5132 RH |
3161 | if (!sym_is_global (abfd, syms[idx])) |
3162 | num_locals++; | |
3163 | else | |
3164 | num_globals++; | |
3165 | } | |
079e9a2f | 3166 | |
5372391b | 3167 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3168 | sections will already have a section symbol in outsymbols, but |
3169 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3170 | at least in that case. */ | |
252b5132 RH |
3171 | for (asect = abfd->sections; asect; asect = asect->next) |
3172 | { | |
079e9a2f | 3173 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3174 | { |
079e9a2f | 3175 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3176 | num_locals++; |
3177 | else | |
3178 | num_globals++; | |
252b5132 RH |
3179 | } |
3180 | } | |
3181 | ||
3182 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3183 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3184 | |
252b5132 | 3185 | if (new_syms == NULL) |
b34976b6 | 3186 | return FALSE; |
252b5132 RH |
3187 | |
3188 | for (idx = 0; idx < symcount; idx++) | |
3189 | { | |
3190 | asymbol *sym = syms[idx]; | |
dc810e39 | 3191 | unsigned int i; |
252b5132 | 3192 | |
5372391b AM |
3193 | if (ignore_section_sym (abfd, sym)) |
3194 | continue; | |
252b5132 RH |
3195 | if (!sym_is_global (abfd, sym)) |
3196 | i = num_locals2++; | |
3197 | else | |
3198 | i = num_locals + num_globals2++; | |
3199 | new_syms[i] = sym; | |
3200 | sym->udata.i = i + 1; | |
3201 | } | |
3202 | for (asect = abfd->sections; asect; asect = asect->next) | |
3203 | { | |
079e9a2f | 3204 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3205 | { |
079e9a2f | 3206 | asymbol *sym = asect->symbol; |
dc810e39 | 3207 | unsigned int i; |
252b5132 | 3208 | |
079e9a2f | 3209 | sect_syms[asect->index] = sym; |
252b5132 RH |
3210 | if (!sym_is_global (abfd, sym)) |
3211 | i = num_locals2++; | |
3212 | else | |
3213 | i = num_locals + num_globals2++; | |
3214 | new_syms[i] = sym; | |
3215 | sym->udata.i = i + 1; | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3220 | ||
3221 | elf_num_locals (abfd) = num_locals; | |
3222 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3223 | return TRUE; |
252b5132 RH |
3224 | } |
3225 | ||
3226 | /* Align to the maximum file alignment that could be required for any | |
3227 | ELF data structure. */ | |
3228 | ||
268b6b39 | 3229 | static inline file_ptr |
217aa764 | 3230 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3231 | { |
3232 | return (off + align - 1) & ~(align - 1); | |
3233 | } | |
3234 | ||
3235 | /* Assign a file position to a section, optionally aligning to the | |
3236 | required section alignment. */ | |
3237 | ||
217aa764 AM |
3238 | file_ptr |
3239 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3240 | file_ptr offset, | |
3241 | bfd_boolean align) | |
252b5132 | 3242 | { |
72de5009 AM |
3243 | if (align && i_shdrp->sh_addralign > 1) |
3244 | offset = BFD_ALIGN (offset, i_shdrp->sh_addralign); | |
252b5132 RH |
3245 | i_shdrp->sh_offset = offset; |
3246 | if (i_shdrp->bfd_section != NULL) | |
3247 | i_shdrp->bfd_section->filepos = offset; | |
3248 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3249 | offset += i_shdrp->sh_size; | |
3250 | return offset; | |
3251 | } | |
3252 | ||
3253 | /* Compute the file positions we are going to put the sections at, and | |
3254 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3255 | is not NULL, this is being called by the ELF backend linker. */ | |
3256 | ||
b34976b6 | 3257 | bfd_boolean |
217aa764 AM |
3258 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3259 | struct bfd_link_info *link_info) | |
252b5132 | 3260 | { |
9c5bfbb7 | 3261 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3262 | bfd_boolean failed; |
4b6c0f2f | 3263 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 | 3264 | Elf_Internal_Shdr *shstrtab_hdr; |
3516e984 | 3265 | bfd_boolean need_symtab; |
252b5132 RH |
3266 | |
3267 | if (abfd->output_has_begun) | |
b34976b6 | 3268 | return TRUE; |
252b5132 RH |
3269 | |
3270 | /* Do any elf backend specific processing first. */ | |
3271 | if (bed->elf_backend_begin_write_processing) | |
3272 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3273 | ||
3274 | if (! prep_headers (abfd)) | |
b34976b6 | 3275 | return FALSE; |
252b5132 | 3276 | |
e6c51ed4 NC |
3277 | /* Post process the headers if necessary. */ |
3278 | if (bed->elf_backend_post_process_headers) | |
3279 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3280 | ||
b34976b6 | 3281 | failed = FALSE; |
252b5132 RH |
3282 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3283 | if (failed) | |
b34976b6 | 3284 | return FALSE; |
252b5132 | 3285 | |
da9f89d4 | 3286 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3287 | return FALSE; |
252b5132 RH |
3288 | |
3289 | /* The backend linker builds symbol table information itself. */ | |
3516e984 L |
3290 | need_symtab = (link_info == NULL |
3291 | && (bfd_get_symcount (abfd) > 0 | |
3292 | || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC)) | |
3293 | == HAS_RELOC))); | |
3294 | if (need_symtab) | |
252b5132 RH |
3295 | { |
3296 | /* Non-zero if doing a relocatable link. */ | |
3297 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3298 | ||
3299 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3300 | return FALSE; |
252b5132 RH |
3301 | } |
3302 | ||
1126897b | 3303 | if (link_info == NULL) |
dbb410c3 | 3304 | { |
1126897b | 3305 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3306 | if (failed) |
b34976b6 | 3307 | return FALSE; |
dbb410c3 AM |
3308 | } |
3309 | ||
252b5132 RH |
3310 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3311 | /* sh_name was set in prep_headers. */ | |
3312 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3313 | shstrtab_hdr->sh_flags = 0; | |
3314 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3315 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3316 | shstrtab_hdr->sh_entsize = 0; |
3317 | shstrtab_hdr->sh_link = 0; | |
3318 | shstrtab_hdr->sh_info = 0; | |
3319 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3320 | shstrtab_hdr->sh_addralign = 1; | |
3321 | ||
c84fca4d | 3322 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3323 | return FALSE; |
252b5132 | 3324 | |
3516e984 | 3325 | if (need_symtab) |
252b5132 RH |
3326 | { |
3327 | file_ptr off; | |
3328 | Elf_Internal_Shdr *hdr; | |
3329 | ||
3330 | off = elf_tdata (abfd)->next_file_pos; | |
3331 | ||
3332 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3333 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3334 | |
9ad5cbcf AM |
3335 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3336 | if (hdr->sh_size != 0) | |
b34976b6 | 3337 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3338 | |
252b5132 | 3339 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3340 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3341 | |
3342 | elf_tdata (abfd)->next_file_pos = off; | |
3343 | ||
3344 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3345 | out. */ |
252b5132 RH |
3346 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3347 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3348 | return FALSE; |
252b5132 RH |
3349 | _bfd_stringtab_free (strtab); |
3350 | } | |
3351 | ||
b34976b6 | 3352 | abfd->output_has_begun = TRUE; |
252b5132 | 3353 | |
b34976b6 | 3354 | return TRUE; |
252b5132 RH |
3355 | } |
3356 | ||
8ded5a0f AM |
3357 | /* Make an initial estimate of the size of the program header. If we |
3358 | get the number wrong here, we'll redo section placement. */ | |
3359 | ||
3360 | static bfd_size_type | |
3361 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3362 | { | |
3363 | size_t segs; | |
3364 | asection *s; | |
2b05f1b7 | 3365 | const struct elf_backend_data *bed; |
8ded5a0f AM |
3366 | |
3367 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3368 | and one for data. */ | |
3369 | segs = 2; | |
3370 | ||
3371 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3372 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3373 | { | |
3374 | /* If we have a loadable interpreter section, we need a | |
3375 | PT_INTERP segment. In this case, assume we also need a | |
3376 | PT_PHDR segment, although that may not be true for all | |
3377 | targets. */ | |
3378 | segs += 2; | |
3379 | } | |
3380 | ||
3381 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3382 | { | |
3383 | /* We need a PT_DYNAMIC segment. */ | |
3384 | ++segs; | |
f210dcff | 3385 | } |
08a40648 | 3386 | |
ceae84aa | 3387 | if (info != NULL && info->relro) |
f210dcff L |
3388 | { |
3389 | /* We need a PT_GNU_RELRO segment. */ | |
3390 | ++segs; | |
8ded5a0f AM |
3391 | } |
3392 | ||
3393 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3394 | { | |
3395 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3396 | ++segs; | |
3397 | } | |
3398 | ||
2b05f1b7 | 3399 | if (elf_tdata (abfd)->stack_flags) |
8ded5a0f | 3400 | { |
2b05f1b7 L |
3401 | /* We need a PT_GNU_STACK segment. */ |
3402 | ++segs; | |
3403 | } | |
94b11780 | 3404 | |
2b05f1b7 L |
3405 | for (s = abfd->sections; s != NULL; s = s->next) |
3406 | { | |
8ded5a0f | 3407 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 3408 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3409 | { |
3410 | /* We need a PT_NOTE segment. */ | |
3411 | ++segs; | |
1c5265b5 JJ |
3412 | /* Try to create just one PT_NOTE segment |
3413 | for all adjacent loadable .note* sections. | |
3414 | gABI requires that within a PT_NOTE segment | |
3415 | (and also inside of each SHT_NOTE section) | |
3416 | each note is padded to a multiple of 4 size, | |
3417 | so we check whether the sections are correctly | |
3418 | aligned. */ | |
3419 | if (s->alignment_power == 2) | |
3420 | while (s->next != NULL | |
3421 | && s->next->alignment_power == 2 | |
3422 | && (s->next->flags & SEC_LOAD) != 0 | |
3423 | && CONST_STRNEQ (s->next->name, ".note")) | |
3424 | s = s->next; | |
8ded5a0f AM |
3425 | } |
3426 | } | |
3427 | ||
3428 | for (s = abfd->sections; s != NULL; s = s->next) | |
3429 | { | |
3430 | if (s->flags & SEC_THREAD_LOCAL) | |
3431 | { | |
3432 | /* We need a PT_TLS segment. */ | |
3433 | ++segs; | |
3434 | break; | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 3439 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
3440 | if (bed->elf_backend_additional_program_headers) |
3441 | { | |
3442 | int a; | |
3443 | ||
3444 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3445 | if (a == -1) | |
3446 | abort (); | |
3447 | segs += a; | |
3448 | } | |
3449 | ||
3450 | return segs * bed->s->sizeof_phdr; | |
3451 | } | |
3452 | ||
2ea37f1c NC |
3453 | /* Find the segment that contains the output_section of section. */ |
3454 | ||
3455 | Elf_Internal_Phdr * | |
3456 | _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section) | |
3457 | { | |
3458 | struct elf_segment_map *m; | |
3459 | Elf_Internal_Phdr *p; | |
3460 | ||
3461 | for (m = elf_tdata (abfd)->segment_map, | |
3462 | p = elf_tdata (abfd)->phdr; | |
3463 | m != NULL; | |
3464 | m = m->next, p++) | |
3465 | { | |
3466 | int i; | |
3467 | ||
3468 | for (i = m->count - 1; i >= 0; i--) | |
3469 | if (m->sections[i] == section) | |
3470 | return p; | |
3471 | } | |
3472 | ||
3473 | return NULL; | |
3474 | } | |
3475 | ||
252b5132 RH |
3476 | /* Create a mapping from a set of sections to a program segment. */ |
3477 | ||
217aa764 AM |
3478 | static struct elf_segment_map * |
3479 | make_mapping (bfd *abfd, | |
3480 | asection **sections, | |
3481 | unsigned int from, | |
3482 | unsigned int to, | |
3483 | bfd_boolean phdr) | |
252b5132 RH |
3484 | { |
3485 | struct elf_segment_map *m; | |
3486 | unsigned int i; | |
3487 | asection **hdrpp; | |
dc810e39 | 3488 | bfd_size_type amt; |
252b5132 | 3489 | |
dc810e39 AM |
3490 | amt = sizeof (struct elf_segment_map); |
3491 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3492 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3493 | if (m == NULL) |
3494 | return NULL; | |
3495 | m->next = NULL; | |
3496 | m->p_type = PT_LOAD; | |
3497 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3498 | m->sections[i - from] = *hdrpp; | |
3499 | m->count = to - from; | |
3500 | ||
3501 | if (from == 0 && phdr) | |
3502 | { | |
3503 | /* Include the headers in the first PT_LOAD segment. */ | |
3504 | m->includes_filehdr = 1; | |
3505 | m->includes_phdrs = 1; | |
3506 | } | |
3507 | ||
3508 | return m; | |
3509 | } | |
3510 | ||
229fcec5 MM |
3511 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3512 | on failure. */ | |
3513 | ||
3514 | struct elf_segment_map * | |
3515 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3516 | { | |
3517 | struct elf_segment_map *m; | |
3518 | ||
3519 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3520 | if (m == NULL) | |
3521 | return NULL; | |
3522 | m->next = NULL; | |
3523 | m->p_type = PT_DYNAMIC; | |
3524 | m->count = 1; | |
3525 | m->sections[0] = dynsec; | |
08a40648 | 3526 | |
229fcec5 MM |
3527 | return m; |
3528 | } | |
3529 | ||
8ded5a0f | 3530 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3531 | |
b34976b6 | 3532 | static bfd_boolean |
3dea8fca AM |
3533 | elf_modify_segment_map (bfd *abfd, |
3534 | struct bfd_link_info *info, | |
3535 | bfd_boolean remove_empty_load) | |
252b5132 | 3536 | { |
252e386e | 3537 | struct elf_segment_map **m; |
8ded5a0f | 3538 | const struct elf_backend_data *bed; |
252b5132 | 3539 | |
8ded5a0f AM |
3540 | /* The placement algorithm assumes that non allocated sections are |
3541 | not in PT_LOAD segments. We ensure this here by removing such | |
3542 | sections from the segment map. We also remove excluded | |
252e386e AM |
3543 | sections. Finally, any PT_LOAD segment without sections is |
3544 | removed. */ | |
3545 | m = &elf_tdata (abfd)->segment_map; | |
3546 | while (*m) | |
8ded5a0f AM |
3547 | { |
3548 | unsigned int i, new_count; | |
252b5132 | 3549 | |
252e386e | 3550 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3551 | { |
252e386e AM |
3552 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3553 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3554 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3555 | { |
252e386e AM |
3556 | (*m)->sections[new_count] = (*m)->sections[i]; |
3557 | new_count++; | |
8ded5a0f AM |
3558 | } |
3559 | } | |
252e386e | 3560 | (*m)->count = new_count; |
252b5132 | 3561 | |
3dea8fca | 3562 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
3563 | *m = (*m)->next; |
3564 | else | |
3565 | m = &(*m)->next; | |
8ded5a0f | 3566 | } |
252b5132 | 3567 | |
8ded5a0f AM |
3568 | bed = get_elf_backend_data (abfd); |
3569 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3570 | { |
252e386e | 3571 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3572 | return FALSE; |
252b5132 | 3573 | } |
252b5132 | 3574 | |
8ded5a0f AM |
3575 | return TRUE; |
3576 | } | |
252b5132 | 3577 | |
8ded5a0f | 3578 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3579 | |
8ded5a0f AM |
3580 | bfd_boolean |
3581 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3582 | { | |
3583 | unsigned int count; | |
3584 | struct elf_segment_map *m; | |
3585 | asection **sections = NULL; | |
3586 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 3587 | bfd_boolean no_user_phdrs; |
252b5132 | 3588 | |
3dea8fca AM |
3589 | no_user_phdrs = elf_tdata (abfd)->segment_map == NULL; |
3590 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) | |
252b5132 | 3591 | { |
8ded5a0f AM |
3592 | asection *s; |
3593 | unsigned int i; | |
3594 | struct elf_segment_map *mfirst; | |
3595 | struct elf_segment_map **pm; | |
3596 | asection *last_hdr; | |
3597 | bfd_vma last_size; | |
3598 | unsigned int phdr_index; | |
3599 | bfd_vma maxpagesize; | |
3600 | asection **hdrpp; | |
3601 | bfd_boolean phdr_in_segment = TRUE; | |
3602 | bfd_boolean writable; | |
3603 | int tls_count = 0; | |
3604 | asection *first_tls = NULL; | |
3605 | asection *dynsec, *eh_frame_hdr; | |
3606 | bfd_size_type amt; | |
252b5132 | 3607 | |
8ded5a0f | 3608 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3609 | |
8ded5a0f AM |
3610 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3611 | if (sections == NULL) | |
252b5132 | 3612 | goto error_return; |
252b5132 | 3613 | |
8ded5a0f AM |
3614 | i = 0; |
3615 | for (s = abfd->sections; s != NULL; s = s->next) | |
3616 | { | |
3617 | if ((s->flags & SEC_ALLOC) != 0) | |
3618 | { | |
3619 | sections[i] = s; | |
3620 | ++i; | |
3621 | } | |
3622 | } | |
3623 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3624 | count = i; | |
252b5132 | 3625 | |
8ded5a0f | 3626 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3627 | |
8ded5a0f | 3628 | /* Build the mapping. */ |
252b5132 | 3629 | |
8ded5a0f AM |
3630 | mfirst = NULL; |
3631 | pm = &mfirst; | |
252b5132 | 3632 | |
8ded5a0f AM |
3633 | /* If we have a .interp section, then create a PT_PHDR segment for |
3634 | the program headers and a PT_INTERP segment for the .interp | |
3635 | section. */ | |
3636 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3637 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3638 | { | |
3639 | amt = sizeof (struct elf_segment_map); | |
3640 | m = bfd_zalloc (abfd, amt); | |
3641 | if (m == NULL) | |
3642 | goto error_return; | |
3643 | m->next = NULL; | |
3644 | m->p_type = PT_PHDR; | |
3645 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3646 | m->p_flags = PF_R | PF_X; | |
3647 | m->p_flags_valid = 1; | |
3648 | m->includes_phdrs = 1; | |
252b5132 | 3649 | |
8ded5a0f AM |
3650 | *pm = m; |
3651 | pm = &m->next; | |
252b5132 | 3652 | |
8ded5a0f AM |
3653 | amt = sizeof (struct elf_segment_map); |
3654 | m = bfd_zalloc (abfd, amt); | |
3655 | if (m == NULL) | |
3656 | goto error_return; | |
3657 | m->next = NULL; | |
3658 | m->p_type = PT_INTERP; | |
3659 | m->count = 1; | |
3660 | m->sections[0] = s; | |
3661 | ||
3662 | *pm = m; | |
3663 | pm = &m->next; | |
252b5132 | 3664 | } |
8ded5a0f AM |
3665 | |
3666 | /* Look through the sections. We put sections in the same program | |
3667 | segment when the start of the second section can be placed within | |
3668 | a few bytes of the end of the first section. */ | |
3669 | last_hdr = NULL; | |
3670 | last_size = 0; | |
3671 | phdr_index = 0; | |
3672 | maxpagesize = bed->maxpagesize; | |
3673 | writable = FALSE; | |
3674 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3675 | if (dynsec != NULL | |
3676 | && (dynsec->flags & SEC_LOAD) == 0) | |
3677 | dynsec = NULL; | |
3678 | ||
3679 | /* Deal with -Ttext or something similar such that the first section | |
3680 | is not adjacent to the program headers. This is an | |
3681 | approximation, since at this point we don't know exactly how many | |
3682 | program headers we will need. */ | |
3683 | if (count > 0) | |
252b5132 | 3684 | { |
8ded5a0f AM |
3685 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3686 | ||
62d7a5f6 | 3687 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3688 | phdr_size = get_program_header_size (abfd, info); |
3689 | if ((abfd->flags & D_PAGED) == 0 | |
3690 | || sections[0]->lma < phdr_size | |
3691 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3692 | phdr_in_segment = FALSE; | |
252b5132 RH |
3693 | } |
3694 | ||
8ded5a0f | 3695 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3696 | { |
8ded5a0f AM |
3697 | asection *hdr; |
3698 | bfd_boolean new_segment; | |
3699 | ||
3700 | hdr = *hdrpp; | |
3701 | ||
3702 | /* See if this section and the last one will fit in the same | |
3703 | segment. */ | |
3704 | ||
3705 | if (last_hdr == NULL) | |
3706 | { | |
3707 | /* If we don't have a segment yet, then we don't need a new | |
3708 | one (we build the last one after this loop). */ | |
3709 | new_segment = FALSE; | |
3710 | } | |
3711 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3712 | { | |
3713 | /* If this section has a different relation between the | |
3714 | virtual address and the load address, then we need a new | |
3715 | segment. */ | |
3716 | new_segment = TRUE; | |
3717 | } | |
39948a60 NC |
3718 | /* In the next test we have to be careful when last_hdr->lma is close |
3719 | to the end of the address space. If the aligned address wraps | |
3720 | around to the start of the address space, then there are no more | |
3721 | pages left in memory and it is OK to assume that the current | |
3722 | section can be included in the current segment. */ | |
3723 | else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
3724 | > last_hdr->lma) | |
3725 | && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize | |
4ff73856 | 3726 | <= hdr->lma)) |
8ded5a0f AM |
3727 | { |
3728 | /* If putting this section in this segment would force us to | |
3729 | skip a page in the segment, then we need a new segment. */ | |
3730 | new_segment = TRUE; | |
3731 | } | |
3732 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3733 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3734 | { | |
3735 | /* We don't want to put a loadable section after a | |
3736 | nonloadable section in the same segment. | |
3737 | Consider .tbss sections as loadable for this purpose. */ | |
3738 | new_segment = TRUE; | |
3739 | } | |
3740 | else if ((abfd->flags & D_PAGED) == 0) | |
3741 | { | |
3742 | /* If the file is not demand paged, which means that we | |
3743 | don't require the sections to be correctly aligned in the | |
3744 | file, then there is no other reason for a new segment. */ | |
3745 | new_segment = FALSE; | |
3746 | } | |
3747 | else if (! writable | |
3748 | && (hdr->flags & SEC_READONLY) == 0 | |
3749 | && (((last_hdr->lma + last_size - 1) | |
3750 | & ~(maxpagesize - 1)) | |
3751 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3752 | { | |
3753 | /* We don't want to put a writable section in a read only | |
3754 | segment, unless they are on the same page in memory | |
3755 | anyhow. We already know that the last section does not | |
3756 | bring us past the current section on the page, so the | |
3757 | only case in which the new section is not on the same | |
3758 | page as the previous section is when the previous section | |
3759 | ends precisely on a page boundary. */ | |
3760 | new_segment = TRUE; | |
3761 | } | |
3762 | else | |
3763 | { | |
3764 | /* Otherwise, we can use the same segment. */ | |
3765 | new_segment = FALSE; | |
3766 | } | |
3767 | ||
2889e75b | 3768 | /* Allow interested parties a chance to override our decision. */ |
ceae84aa AM |
3769 | if (last_hdr != NULL |
3770 | && info != NULL | |
3771 | && info->callbacks->override_segment_assignment != NULL) | |
3772 | new_segment | |
3773 | = info->callbacks->override_segment_assignment (info, abfd, hdr, | |
3774 | last_hdr, | |
3775 | new_segment); | |
2889e75b | 3776 | |
8ded5a0f AM |
3777 | if (! new_segment) |
3778 | { | |
3779 | if ((hdr->flags & SEC_READONLY) == 0) | |
3780 | writable = TRUE; | |
3781 | last_hdr = hdr; | |
3782 | /* .tbss sections effectively have zero size. */ | |
3783 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3784 | != SEC_THREAD_LOCAL) | |
3785 | last_size = hdr->size; | |
3786 | else | |
3787 | last_size = 0; | |
3788 | continue; | |
3789 | } | |
3790 | ||
3791 | /* We need a new program segment. We must create a new program | |
3792 | header holding all the sections from phdr_index until hdr. */ | |
3793 | ||
3794 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3795 | if (m == NULL) | |
3796 | goto error_return; | |
3797 | ||
3798 | *pm = m; | |
3799 | pm = &m->next; | |
3800 | ||
252b5132 | 3801 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3802 | writable = TRUE; |
8ded5a0f AM |
3803 | else |
3804 | writable = FALSE; | |
3805 | ||
baaff79e JJ |
3806 | last_hdr = hdr; |
3807 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3808 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3809 | last_size = hdr->size; |
baaff79e JJ |
3810 | else |
3811 | last_size = 0; | |
8ded5a0f AM |
3812 | phdr_index = i; |
3813 | phdr_in_segment = FALSE; | |
252b5132 RH |
3814 | } |
3815 | ||
8ded5a0f AM |
3816 | /* Create a final PT_LOAD program segment. */ |
3817 | if (last_hdr != NULL) | |
3818 | { | |
3819 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3820 | if (m == NULL) | |
3821 | goto error_return; | |
252b5132 | 3822 | |
8ded5a0f AM |
3823 | *pm = m; |
3824 | pm = &m->next; | |
3825 | } | |
252b5132 | 3826 | |
8ded5a0f AM |
3827 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3828 | if (dynsec != NULL) | |
3829 | { | |
3830 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3831 | if (m == NULL) | |
3832 | goto error_return; | |
3833 | *pm = m; | |
3834 | pm = &m->next; | |
3835 | } | |
252b5132 | 3836 | |
1c5265b5 JJ |
3837 | /* For each batch of consecutive loadable .note sections, |
3838 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
3839 | because if we link together nonloadable .note sections and | |
3840 | loadable .note sections, we will generate two .note sections | |
3841 | in the output file. FIXME: Using names for section types is | |
3842 | bogus anyhow. */ | |
8ded5a0f AM |
3843 | for (s = abfd->sections; s != NULL; s = s->next) |
3844 | { | |
3845 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3846 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 3847 | { |
1c5265b5 JJ |
3848 | asection *s2; |
3849 | unsigned count = 1; | |
8ded5a0f | 3850 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
3851 | if (s->alignment_power == 2) |
3852 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
3853 | { |
3854 | if (s2->next->alignment_power == 2 | |
3855 | && (s2->next->flags & SEC_LOAD) != 0 | |
3856 | && CONST_STRNEQ (s2->next->name, ".note") | |
3857 | && align_power (s2->vma + s2->size, 2) | |
3858 | == s2->next->vma) | |
3859 | count++; | |
3860 | else | |
3861 | break; | |
3862 | } | |
1c5265b5 | 3863 | amt += (count - 1) * sizeof (asection *); |
8ded5a0f AM |
3864 | m = bfd_zalloc (abfd, amt); |
3865 | if (m == NULL) | |
3866 | goto error_return; | |
3867 | m->next = NULL; | |
3868 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
3869 | m->count = count; |
3870 | while (count > 1) | |
3871 | { | |
3872 | m->sections[m->count - count--] = s; | |
3873 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
3874 | s = s->next; | |
3875 | } | |
3876 | m->sections[m->count - 1] = s; | |
3877 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
3878 | *pm = m; |
3879 | pm = &m->next; | |
3880 | } | |
3881 | if (s->flags & SEC_THREAD_LOCAL) | |
3882 | { | |
3883 | if (! tls_count) | |
3884 | first_tls = s; | |
3885 | tls_count++; | |
3886 | } | |
3887 | } | |
252b5132 | 3888 | |
8ded5a0f AM |
3889 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
3890 | if (tls_count > 0) | |
3891 | { | |
3892 | int i; | |
252b5132 | 3893 | |
8ded5a0f AM |
3894 | amt = sizeof (struct elf_segment_map); |
3895 | amt += (tls_count - 1) * sizeof (asection *); | |
3896 | m = bfd_zalloc (abfd, amt); | |
3897 | if (m == NULL) | |
3898 | goto error_return; | |
3899 | m->next = NULL; | |
3900 | m->p_type = PT_TLS; | |
3901 | m->count = tls_count; | |
3902 | /* Mandated PF_R. */ | |
3903 | m->p_flags = PF_R; | |
3904 | m->p_flags_valid = 1; | |
3905 | for (i = 0; i < tls_count; ++i) | |
3906 | { | |
3907 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3908 | m->sections[i] = first_tls; | |
3909 | first_tls = first_tls->next; | |
3910 | } | |
252b5132 | 3911 | |
8ded5a0f AM |
3912 | *pm = m; |
3913 | pm = &m->next; | |
3914 | } | |
252b5132 | 3915 | |
8ded5a0f AM |
3916 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3917 | segment. */ | |
3918 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
3919 | if (eh_frame_hdr != NULL | |
3920 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 3921 | { |
dc810e39 | 3922 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3923 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3924 | if (m == NULL) |
3925 | goto error_return; | |
3926 | m->next = NULL; | |
8ded5a0f | 3927 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 3928 | m->count = 1; |
8ded5a0f | 3929 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
3930 | |
3931 | *pm = m; | |
3932 | pm = &m->next; | |
3933 | } | |
13ae64f3 | 3934 | |
8ded5a0f | 3935 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 3936 | { |
8ded5a0f AM |
3937 | amt = sizeof (struct elf_segment_map); |
3938 | m = bfd_zalloc (abfd, amt); | |
3939 | if (m == NULL) | |
3940 | goto error_return; | |
3941 | m->next = NULL; | |
2b05f1b7 | 3942 | m->p_type = PT_GNU_STACK; |
8ded5a0f AM |
3943 | m->p_flags = elf_tdata (abfd)->stack_flags; |
3944 | m->p_flags_valid = 1; | |
252b5132 | 3945 | |
8ded5a0f AM |
3946 | *pm = m; |
3947 | pm = &m->next; | |
3948 | } | |
65765700 | 3949 | |
ceae84aa | 3950 | if (info != NULL && info->relro) |
8ded5a0f | 3951 | { |
f210dcff L |
3952 | for (m = mfirst; m != NULL; m = m->next) |
3953 | { | |
3954 | if (m->p_type == PT_LOAD) | |
3955 | { | |
3956 | asection *last = m->sections[m->count - 1]; | |
3957 | bfd_vma vaddr = m->sections[0]->vma; | |
3958 | bfd_vma filesz = last->vma - vaddr + last->size; | |
65765700 | 3959 | |
f210dcff L |
3960 | if (vaddr < info->relro_end |
3961 | && vaddr >= info->relro_start | |
3962 | && (vaddr + filesz) >= info->relro_end) | |
3963 | break; | |
3964 | } | |
3965 | } | |
3966 | ||
3967 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
3968 | if (m != NULL) | |
3969 | { | |
3970 | amt = sizeof (struct elf_segment_map); | |
3971 | m = bfd_zalloc (abfd, amt); | |
3972 | if (m == NULL) | |
3973 | goto error_return; | |
3974 | m->next = NULL; | |
3975 | m->p_type = PT_GNU_RELRO; | |
3976 | m->p_flags = PF_R; | |
3977 | m->p_flags_valid = 1; | |
3978 | ||
3979 | *pm = m; | |
3980 | pm = &m->next; | |
3981 | } | |
8ded5a0f | 3982 | } |
9ee5e499 | 3983 | |
8ded5a0f AM |
3984 | free (sections); |
3985 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
3986 | } |
3987 | ||
3dea8fca | 3988 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 3989 | return FALSE; |
8c37241b | 3990 | |
8ded5a0f AM |
3991 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
3992 | ++count; | |
3993 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 3994 | |
b34976b6 | 3995 | return TRUE; |
252b5132 RH |
3996 | |
3997 | error_return: | |
3998 | if (sections != NULL) | |
3999 | free (sections); | |
b34976b6 | 4000 | return FALSE; |
252b5132 RH |
4001 | } |
4002 | ||
4003 | /* Sort sections by address. */ | |
4004 | ||
4005 | static int | |
217aa764 | 4006 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4007 | { |
4008 | const asection *sec1 = *(const asection **) arg1; | |
4009 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4010 | bfd_size_type size1, size2; |
252b5132 RH |
4011 | |
4012 | /* Sort by LMA first, since this is the address used to | |
4013 | place the section into a segment. */ | |
4014 | if (sec1->lma < sec2->lma) | |
4015 | return -1; | |
4016 | else if (sec1->lma > sec2->lma) | |
4017 | return 1; | |
4018 | ||
4019 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4020 | the same, and this will do nothing. */ | |
4021 | if (sec1->vma < sec2->vma) | |
4022 | return -1; | |
4023 | else if (sec1->vma > sec2->vma) | |
4024 | return 1; | |
4025 | ||
4026 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4027 | ||
07c6e936 | 4028 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4029 | |
4030 | if (TOEND (sec1)) | |
4031 | { | |
4032 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4033 | { |
4034 | /* If the indicies are the same, do not return 0 | |
4035 | here, but continue to try the next comparison. */ | |
4036 | if (sec1->target_index - sec2->target_index != 0) | |
4037 | return sec1->target_index - sec2->target_index; | |
4038 | } | |
252b5132 RH |
4039 | else |
4040 | return 1; | |
4041 | } | |
00a7cdc5 | 4042 | else if (TOEND (sec2)) |
252b5132 RH |
4043 | return -1; |
4044 | ||
4045 | #undef TOEND | |
4046 | ||
00a7cdc5 NC |
4047 | /* Sort by size, to put zero sized sections |
4048 | before others at the same address. */ | |
252b5132 | 4049 | |
eea6121a AM |
4050 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4051 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4052 | |
4053 | if (size1 < size2) | |
252b5132 | 4054 | return -1; |
eecdbe52 | 4055 | if (size1 > size2) |
252b5132 RH |
4056 | return 1; |
4057 | ||
4058 | return sec1->target_index - sec2->target_index; | |
4059 | } | |
4060 | ||
340b6d91 AC |
4061 | /* Ian Lance Taylor writes: |
4062 | ||
4063 | We shouldn't be using % with a negative signed number. That's just | |
4064 | not good. We have to make sure either that the number is not | |
4065 | negative, or that the number has an unsigned type. When the types | |
4066 | are all the same size they wind up as unsigned. When file_ptr is a | |
4067 | larger signed type, the arithmetic winds up as signed long long, | |
4068 | which is wrong. | |
4069 | ||
4070 | What we're trying to say here is something like ``increase OFF by | |
4071 | the least amount that will cause it to be equal to the VMA modulo | |
4072 | the page size.'' */ | |
4073 | /* In other words, something like: | |
4074 | ||
4075 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4076 | off_offset = off % bed->maxpagesize; | |
4077 | if (vma_offset < off_offset) | |
4078 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4079 | else | |
4080 | adjustment = vma_offset - off_offset; | |
08a40648 | 4081 | |
340b6d91 AC |
4082 | which can can be collapsed into the expression below. */ |
4083 | ||
4084 | static file_ptr | |
4085 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4086 | { | |
4087 | return ((vma - off) % maxpagesize); | |
4088 | } | |
4089 | ||
6d33f217 L |
4090 | static void |
4091 | print_segment_map (const struct elf_segment_map *m) | |
4092 | { | |
4093 | unsigned int j; | |
4094 | const char *pt = get_segment_type (m->p_type); | |
4095 | char buf[32]; | |
4096 | ||
4097 | if (pt == NULL) | |
4098 | { | |
4099 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4100 | sprintf (buf, "LOPROC+%7.7x", | |
4101 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4102 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4103 | sprintf (buf, "LOOS+%7.7x", | |
4104 | (unsigned int) (m->p_type - PT_LOOS)); | |
4105 | else | |
4106 | snprintf (buf, sizeof (buf), "%8.8x", | |
4107 | (unsigned int) m->p_type); | |
4108 | pt = buf; | |
4109 | } | |
4110 | fprintf (stderr, "%s:", pt); | |
4111 | for (j = 0; j < m->count; j++) | |
4112 | fprintf (stderr, " %s", m->sections [j]->name); | |
4113 | putc ('\n',stderr); | |
4114 | } | |
4115 | ||
252b5132 RH |
4116 | /* Assign file positions to the sections based on the mapping from |
4117 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4118 | the file header. */ |
252b5132 | 4119 | |
b34976b6 | 4120 | static bfd_boolean |
f3520d2f AM |
4121 | assign_file_positions_for_load_sections (bfd *abfd, |
4122 | struct bfd_link_info *link_info) | |
252b5132 RH |
4123 | { |
4124 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4125 | struct elf_segment_map *m; |
252b5132 | 4126 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4127 | Elf_Internal_Phdr *p; |
02bf8d82 | 4128 | file_ptr off; |
3f570048 | 4129 | bfd_size_type maxpagesize; |
f3520d2f | 4130 | unsigned int alloc; |
0920dee7 | 4131 | unsigned int i, j; |
2b0bc088 | 4132 | bfd_vma header_pad = 0; |
252b5132 | 4133 | |
e36284ab | 4134 | if (link_info == NULL |
ceae84aa | 4135 | && !_bfd_elf_map_sections_to_segments (abfd, link_info)) |
8ded5a0f | 4136 | return FALSE; |
252b5132 | 4137 | |
8ded5a0f | 4138 | alloc = 0; |
252b5132 | 4139 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
2b0bc088 NC |
4140 | { |
4141 | ++alloc; | |
4142 | if (m->header_size) | |
4143 | header_pad = m->header_size; | |
4144 | } | |
252b5132 RH |
4145 | |
4146 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4147 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4148 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4149 | |
62d7a5f6 | 4150 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4151 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4152 | else | |
4153 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4154 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4155 | |
4156 | if (alloc == 0) | |
f3520d2f | 4157 | { |
8ded5a0f AM |
4158 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4159 | return TRUE; | |
f3520d2f | 4160 | } |
252b5132 | 4161 | |
57268894 HPN |
4162 | /* We're writing the size in elf_tdata (abfd)->program_header_size, |
4163 | see assign_file_positions_except_relocs, so make sure we have | |
4164 | that amount allocated, with trailing space cleared. | |
4165 | The variable alloc contains the computed need, while elf_tdata | |
4166 | (abfd)->program_header_size contains the size used for the | |
4167 | layout. | |
4168 | See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments | |
4169 | where the layout is forced to according to a larger size in the | |
4170 | last iterations for the testcase ld-elf/header. */ | |
4171 | BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr | |
4172 | == 0); | |
4173 | phdrs = bfd_zalloc2 (abfd, | |
4174 | (elf_tdata (abfd)->program_header_size | |
4175 | / bed->s->sizeof_phdr), | |
4176 | sizeof (Elf_Internal_Phdr)); | |
f3520d2f | 4177 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4178 | if (phdrs == NULL) |
b34976b6 | 4179 | return FALSE; |
252b5132 | 4180 | |
3f570048 AM |
4181 | maxpagesize = 1; |
4182 | if ((abfd->flags & D_PAGED) != 0) | |
4183 | maxpagesize = bed->maxpagesize; | |
4184 | ||
252b5132 RH |
4185 | off = bed->s->sizeof_ehdr; |
4186 | off += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4187 | if (header_pad < (bfd_vma) off) |
4188 | header_pad = 0; | |
4189 | else | |
4190 | header_pad -= off; | |
4191 | off += header_pad; | |
252b5132 | 4192 | |
0920dee7 | 4193 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4194 | m != NULL; |
0920dee7 | 4195 | m = m->next, p++, j++) |
252b5132 | 4196 | { |
252b5132 | 4197 | asection **secpp; |
bf988460 AM |
4198 | bfd_vma off_adjust; |
4199 | bfd_boolean no_contents; | |
252b5132 RH |
4200 | |
4201 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4202 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4203 | not be done to the PT_NOTE section of a corefile, which may |
4204 | contain several pseudo-sections artificially created by bfd. | |
4205 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4206 | if (m->count > 1 |
4207 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4208 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4209 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4210 | elf_sort_sections); | |
4211 | ||
b301b248 AM |
4212 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4213 | number of sections with contents contributing to both p_filesz | |
4214 | and p_memsz, followed by a number of sections with no contents | |
4215 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4216 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4217 | p->p_type = m->p_type; |
28a7f3e7 | 4218 | p->p_flags = m->p_flags; |
252b5132 | 4219 | |
3f570048 AM |
4220 | if (m->count == 0) |
4221 | p->p_vaddr = 0; | |
4222 | else | |
3271a814 | 4223 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4224 | |
4225 | if (m->p_paddr_valid) | |
4226 | p->p_paddr = m->p_paddr; | |
4227 | else if (m->count == 0) | |
4228 | p->p_paddr = 0; | |
4229 | else | |
08a40648 | 4230 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4231 | |
4232 | if (p->p_type == PT_LOAD | |
4233 | && (abfd->flags & D_PAGED) != 0) | |
4234 | { | |
4235 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4236 | the maximum page size. When copying an executable with | |
4237 | objcopy, we set m->p_align from the input file. Use this | |
4238 | value for maxpagesize rather than bed->maxpagesize, which | |
4239 | may be different. Note that we use maxpagesize for PT_TLS | |
4240 | segment alignment later in this function, so we are relying | |
4241 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4242 | segment. */ | |
4243 | if (m->p_align_valid) | |
4244 | maxpagesize = m->p_align; | |
4245 | ||
4246 | p->p_align = maxpagesize; | |
4247 | } | |
3271a814 NS |
4248 | else if (m->p_align_valid) |
4249 | p->p_align = m->p_align; | |
e970b90a DJ |
4250 | else if (m->count == 0) |
4251 | p->p_align = 1 << bed->s->log_file_align; | |
3f570048 AM |
4252 | else |
4253 | p->p_align = 0; | |
4254 | ||
bf988460 AM |
4255 | no_contents = FALSE; |
4256 | off_adjust = 0; | |
252b5132 | 4257 | if (p->p_type == PT_LOAD |
b301b248 | 4258 | && m->count > 0) |
252b5132 | 4259 | { |
b301b248 | 4260 | bfd_size_type align; |
a49e53ed | 4261 | unsigned int align_power = 0; |
b301b248 | 4262 | |
3271a814 NS |
4263 | if (m->p_align_valid) |
4264 | align = p->p_align; | |
4265 | else | |
252b5132 | 4266 | { |
3271a814 NS |
4267 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4268 | { | |
4269 | unsigned int secalign; | |
08a40648 | 4270 | |
3271a814 NS |
4271 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4272 | if (secalign > align_power) | |
4273 | align_power = secalign; | |
4274 | } | |
4275 | align = (bfd_size_type) 1 << align_power; | |
4276 | if (align < maxpagesize) | |
4277 | align = maxpagesize; | |
b301b248 | 4278 | } |
252b5132 | 4279 | |
02bf8d82 AM |
4280 | for (i = 0; i < m->count; i++) |
4281 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4282 | /* If we aren't making room for this section, then | |
4283 | it must be SHT_NOBITS regardless of what we've | |
4284 | set via struct bfd_elf_special_section. */ | |
4285 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4286 | ||
bf988460 | 4287 | /* Find out whether this segment contains any loadable |
aea274d3 AM |
4288 | sections. */ |
4289 | no_contents = TRUE; | |
4290 | for (i = 0; i < m->count; i++) | |
4291 | if (elf_section_type (m->sections[i]) != SHT_NOBITS) | |
4292 | { | |
4293 | no_contents = FALSE; | |
4294 | break; | |
4295 | } | |
bf988460 AM |
4296 | |
4297 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4298 | off += off_adjust; | |
4299 | if (no_contents) | |
4300 | { | |
4301 | /* We shouldn't need to align the segment on disk since | |
4302 | the segment doesn't need file space, but the gABI | |
4303 | arguably requires the alignment and glibc ld.so | |
4304 | checks it. So to comply with the alignment | |
4305 | requirement but not waste file space, we adjust | |
4306 | p_offset for just this segment. (OFF_ADJUST is | |
4307 | subtracted from OFF later.) This may put p_offset | |
4308 | past the end of file, but that shouldn't matter. */ | |
4309 | } | |
4310 | else | |
4311 | off_adjust = 0; | |
252b5132 | 4312 | } |
b1a6d0b1 NC |
4313 | /* Make sure the .dynamic section is the first section in the |
4314 | PT_DYNAMIC segment. */ | |
4315 | else if (p->p_type == PT_DYNAMIC | |
4316 | && m->count > 1 | |
4317 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4318 | { | |
4319 | _bfd_error_handler | |
b301b248 AM |
4320 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4321 | abfd); | |
b1a6d0b1 NC |
4322 | bfd_set_error (bfd_error_bad_value); |
4323 | return FALSE; | |
4324 | } | |
3f001e84 JK |
4325 | /* Set the note section type to SHT_NOTE. */ |
4326 | else if (p->p_type == PT_NOTE) | |
4327 | for (i = 0; i < m->count; i++) | |
4328 | elf_section_type (m->sections[i]) = SHT_NOTE; | |
252b5132 | 4329 | |
252b5132 RH |
4330 | p->p_offset = 0; |
4331 | p->p_filesz = 0; | |
4332 | p->p_memsz = 0; | |
4333 | ||
4334 | if (m->includes_filehdr) | |
4335 | { | |
bf988460 | 4336 | if (!m->p_flags_valid) |
252b5132 | 4337 | p->p_flags |= PF_R; |
252b5132 RH |
4338 | p->p_filesz = bed->s->sizeof_ehdr; |
4339 | p->p_memsz = bed->s->sizeof_ehdr; | |
4340 | if (m->count > 0) | |
4341 | { | |
4342 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4343 | ||
4344 | if (p->p_vaddr < (bfd_vma) off) | |
4345 | { | |
caf47ea6 | 4346 | (*_bfd_error_handler) |
b301b248 AM |
4347 | (_("%B: Not enough room for program headers, try linking with -N"), |
4348 | abfd); | |
252b5132 | 4349 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4350 | return FALSE; |
252b5132 RH |
4351 | } |
4352 | ||
4353 | p->p_vaddr -= off; | |
bf988460 | 4354 | if (!m->p_paddr_valid) |
252b5132 RH |
4355 | p->p_paddr -= off; |
4356 | } | |
252b5132 RH |
4357 | } |
4358 | ||
4359 | if (m->includes_phdrs) | |
4360 | { | |
bf988460 | 4361 | if (!m->p_flags_valid) |
252b5132 RH |
4362 | p->p_flags |= PF_R; |
4363 | ||
f3520d2f | 4364 | if (!m->includes_filehdr) |
252b5132 RH |
4365 | { |
4366 | p->p_offset = bed->s->sizeof_ehdr; | |
4367 | ||
4368 | if (m->count > 0) | |
4369 | { | |
4370 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4371 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4372 | if (!m->p_paddr_valid) |
252b5132 RH |
4373 | p->p_paddr -= off - p->p_offset; |
4374 | } | |
252b5132 RH |
4375 | } |
4376 | ||
4377 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4378 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
2b0bc088 NC |
4379 | if (m->count) |
4380 | { | |
4381 | p->p_filesz += header_pad; | |
4382 | p->p_memsz += header_pad; | |
4383 | } | |
252b5132 RH |
4384 | } |
4385 | ||
4386 | if (p->p_type == PT_LOAD | |
4387 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4388 | { | |
bf988460 | 4389 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4390 | p->p_offset = off; |
252b5132 RH |
4391 | else |
4392 | { | |
4393 | file_ptr adjust; | |
4394 | ||
4395 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4396 | if (!no_contents) |
4397 | p->p_filesz += adjust; | |
252b5132 RH |
4398 | p->p_memsz += adjust; |
4399 | } | |
4400 | } | |
4401 | ||
1ea63fd2 AM |
4402 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4403 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4404 | core files, for sections in PT_NOTE segments. | |
4405 | assign_file_positions_for_non_load_sections will set filepos | |
4406 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4407 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4408 | { | |
4409 | asection *sec; | |
252b5132 | 4410 | bfd_size_type align; |
627b32bc | 4411 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4412 | |
4413 | sec = *secpp; | |
02bf8d82 | 4414 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4415 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4416 | |
88967714 AM |
4417 | if ((p->p_type == PT_LOAD |
4418 | || p->p_type == PT_TLS) | |
4419 | && (this_hdr->sh_type != SHT_NOBITS | |
4420 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4421 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
4422 | || p->p_type == PT_TLS)))) | |
252b5132 | 4423 | { |
11701589 | 4424 | bfd_signed_vma adjust = sec->vma - (p->p_vaddr + p->p_memsz); |
252b5132 | 4425 | |
88967714 | 4426 | if (adjust < 0) |
252b5132 | 4427 | { |
88967714 | 4428 | (*_bfd_error_handler) |
11701589 | 4429 | (_("%B: section %A vma 0x%lx overlaps previous sections"), |
37c43c55 | 4430 | abfd, sec, (unsigned long) sec->vma); |
88967714 AM |
4431 | adjust = 0; |
4432 | } | |
4433 | p->p_memsz += adjust; | |
0e922b77 | 4434 | |
88967714 AM |
4435 | if (this_hdr->sh_type != SHT_NOBITS) |
4436 | { | |
4437 | off += adjust; | |
4438 | p->p_filesz += adjust; | |
252b5132 | 4439 | } |
252b5132 RH |
4440 | } |
4441 | ||
4442 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4443 | { | |
b301b248 AM |
4444 | /* The section at i == 0 is the one that actually contains |
4445 | everything. */ | |
4a938328 MS |
4446 | if (i == 0) |
4447 | { | |
627b32bc | 4448 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4449 | off += this_hdr->sh_size; |
4450 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4451 | p->p_memsz = 0; |
4452 | p->p_align = 1; | |
252b5132 | 4453 | } |
4a938328 | 4454 | else |
252b5132 | 4455 | { |
b301b248 | 4456 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4457 | sec->filepos = 0; |
eea6121a | 4458 | sec->size = 0; |
b301b248 AM |
4459 | sec->flags = 0; |
4460 | continue; | |
252b5132 | 4461 | } |
252b5132 RH |
4462 | } |
4463 | else | |
4464 | { | |
b301b248 AM |
4465 | if (p->p_type == PT_LOAD) |
4466 | { | |
02bf8d82 AM |
4467 | this_hdr->sh_offset = sec->filepos = off; |
4468 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4469 | off += this_hdr->sh_size; |
b301b248 | 4470 | } |
252b5132 | 4471 | |
02bf8d82 | 4472 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4473 | { |
6a3cd2b4 | 4474 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4475 | /* A load section without SHF_ALLOC is something like |
4476 | a note section in a PT_NOTE segment. These take | |
4477 | file space but are not loaded into memory. */ | |
4478 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4479 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4480 | } |
6a3cd2b4 | 4481 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4482 | { |
6a3cd2b4 AM |
4483 | if (p->p_type == PT_TLS) |
4484 | p->p_memsz += this_hdr->sh_size; | |
4485 | ||
4486 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4487 | normal segments. */ | |
4488 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4489 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4490 | } |
4491 | ||
b10a8ae0 L |
4492 | if (align > p->p_align |
4493 | && !m->p_align_valid | |
4494 | && (p->p_type != PT_LOAD | |
4495 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4496 | p->p_align = align; |
4497 | } | |
4498 | ||
bf988460 | 4499 | if (!m->p_flags_valid) |
252b5132 RH |
4500 | { |
4501 | p->p_flags |= PF_R; | |
02bf8d82 | 4502 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4503 | p->p_flags |= PF_X; |
02bf8d82 | 4504 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4505 | p->p_flags |= PF_W; |
4506 | } | |
4507 | } | |
bf988460 | 4508 | off -= off_adjust; |
0920dee7 | 4509 | |
7c928300 AM |
4510 | /* Check that all sections are in a PT_LOAD segment. |
4511 | Don't check funky gdb generated core files. */ | |
4512 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4513 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4514 | { | |
4515 | Elf_Internal_Shdr *this_hdr; | |
4516 | asection *sec; | |
4517 | ||
4518 | sec = *secpp; | |
4519 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4520 | if (this_hdr->sh_size != 0 | |
4521 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4522 | { | |
4523 | (*_bfd_error_handler) | |
4524 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4525 | abfd, sec, j); | |
6d33f217 | 4526 | print_segment_map (m); |
0920dee7 L |
4527 | bfd_set_error (bfd_error_bad_value); |
4528 | return FALSE; | |
4529 | } | |
4530 | } | |
252b5132 RH |
4531 | } |
4532 | ||
f3520d2f AM |
4533 | elf_tdata (abfd)->next_file_pos = off; |
4534 | return TRUE; | |
4535 | } | |
4536 | ||
4537 | /* Assign file positions for the other sections. */ | |
4538 | ||
4539 | static bfd_boolean | |
4540 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4541 | struct bfd_link_info *link_info) | |
4542 | { | |
4543 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4544 | Elf_Internal_Shdr **i_shdrpp; | |
4545 | Elf_Internal_Shdr **hdrpp; | |
4546 | Elf_Internal_Phdr *phdrs; | |
4547 | Elf_Internal_Phdr *p; | |
4548 | struct elf_segment_map *m; | |
4549 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4550 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4551 | file_ptr off; | |
4552 | unsigned int num_sec; | |
4553 | unsigned int i; | |
4554 | unsigned int count; | |
4555 | ||
5c182d5f AM |
4556 | i_shdrpp = elf_elfsections (abfd); |
4557 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4558 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4559 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4560 | { | |
4561 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4562 | Elf_Internal_Shdr *hdr; | |
4563 | ||
4564 | hdr = *hdrpp; | |
4565 | if (hdr->bfd_section != NULL | |
252e386e AM |
4566 | && (hdr->bfd_section->filepos != 0 |
4567 | || (hdr->sh_type == SHT_NOBITS | |
4568 | && hdr->contents == NULL))) | |
627b32bc | 4569 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4570 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4571 | { | |
49c13adb L |
4572 | if (hdr->sh_size != 0) |
4573 | ((*_bfd_error_handler) | |
4574 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4575 | abfd, |
4576 | (hdr->bfd_section == NULL | |
4577 | ? "*unknown*" | |
4578 | : hdr->bfd_section->name))); | |
4579 | /* We don't need to page align empty sections. */ | |
4580 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4581 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4582 | bed->maxpagesize); | |
4583 | else | |
4584 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4585 | hdr->sh_addralign); | |
4586 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4587 | FALSE); | |
4588 | } | |
4589 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4590 | && hdr->bfd_section == NULL) | |
4591 | || hdr == i_shdrpp[tdata->symtab_section] | |
4592 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4593 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4594 | hdr->sh_offset = -1; | |
4595 | else | |
4596 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
5c182d5f AM |
4597 | } |
4598 | ||
252b5132 RH |
4599 | /* Now that we have set the section file positions, we can set up |
4600 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4601 | count = 0; |
4602 | filehdr_vaddr = 0; | |
4603 | filehdr_paddr = 0; | |
4604 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4605 | phdrs_paddr = 0; | |
4606 | phdrs = elf_tdata (abfd)->phdr; | |
4607 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4608 | m != NULL; | |
4609 | m = m->next, p++) | |
4610 | { | |
4611 | ++count; | |
4612 | if (p->p_type != PT_LOAD) | |
4613 | continue; | |
4614 | ||
4615 | if (m->includes_filehdr) | |
4616 | { | |
4617 | filehdr_vaddr = p->p_vaddr; | |
4618 | filehdr_paddr = p->p_paddr; | |
4619 | } | |
4620 | if (m->includes_phdrs) | |
4621 | { | |
4622 | phdrs_vaddr = p->p_vaddr; | |
4623 | phdrs_paddr = p->p_paddr; | |
4624 | if (m->includes_filehdr) | |
4625 | { | |
4626 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4627 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4628 | } | |
4629 | } | |
4630 | } | |
4631 | ||
252b5132 RH |
4632 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4633 | m != NULL; | |
4634 | m = m->next, p++) | |
4635 | { | |
129af99f | 4636 | if (p->p_type == PT_GNU_RELRO) |
252b5132 | 4637 | { |
b84a33b5 AM |
4638 | const Elf_Internal_Phdr *lp; |
4639 | ||
129af99f | 4640 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); |
1ea63fd2 | 4641 | |
129af99f | 4642 | if (link_info != NULL) |
8c37241b | 4643 | { |
129af99f AS |
4644 | /* During linking the range of the RELRO segment is passed |
4645 | in link_info. */ | |
8c37241b JJ |
4646 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4647 | { | |
4648 | if (lp->p_type == PT_LOAD | |
8c37241b | 4649 | && lp->p_vaddr >= link_info->relro_start |
b84a33b5 AM |
4650 | && lp->p_vaddr < link_info->relro_end |
4651 | && lp->p_vaddr + lp->p_filesz >= link_info->relro_end) | |
8c37241b JJ |
4652 | break; |
4653 | } | |
8c37241b | 4654 | } |
129af99f AS |
4655 | else |
4656 | { | |
4657 | /* Otherwise we are copying an executable or shared | |
b84a33b5 | 4658 | library, but we need to use the same linker logic. */ |
129af99f AS |
4659 | for (lp = phdrs; lp < phdrs + count; ++lp) |
4660 | { | |
4661 | if (lp->p_type == PT_LOAD | |
4662 | && lp->p_paddr == p->p_paddr) | |
4663 | break; | |
4664 | } | |
b84a33b5 AM |
4665 | } |
4666 | ||
4667 | if (lp < phdrs + count) | |
4668 | { | |
4669 | p->p_vaddr = lp->p_vaddr; | |
4670 | p->p_paddr = lp->p_paddr; | |
4671 | p->p_offset = lp->p_offset; | |
4672 | if (link_info != NULL) | |
4673 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4674 | else if (m->p_size_valid) | |
4675 | p->p_filesz = m->p_size; | |
129af99f AS |
4676 | else |
4677 | abort (); | |
b84a33b5 AM |
4678 | p->p_memsz = p->p_filesz; |
4679 | p->p_align = 1; | |
4680 | p->p_flags = (lp->p_flags & ~PF_W); | |
129af99f | 4681 | } |
9433b9b1 | 4682 | else |
b84a33b5 AM |
4683 | { |
4684 | memset (p, 0, sizeof *p); | |
4685 | p->p_type = PT_NULL; | |
4686 | } | |
129af99f AS |
4687 | } |
4688 | else if (m->count != 0) | |
4689 | { | |
4690 | if (p->p_type != PT_LOAD | |
4691 | && (p->p_type != PT_NOTE | |
4692 | || bfd_get_format (abfd) != bfd_core)) | |
4693 | { | |
4694 | Elf_Internal_Shdr *hdr; | |
4695 | asection *sect; | |
4696 | ||
4697 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4698 | ||
4699 | sect = m->sections[m->count - 1]; | |
4700 | hdr = &elf_section_data (sect)->this_hdr; | |
4701 | p->p_filesz = sect->filepos - m->sections[0]->filepos; | |
4702 | if (hdr->sh_type != SHT_NOBITS) | |
4703 | p->p_filesz += hdr->sh_size; | |
4704 | p->p_offset = m->sections[0]->filepos; | |
4705 | } | |
4706 | } | |
4707 | else if (m->includes_filehdr) | |
4708 | { | |
4709 | p->p_vaddr = filehdr_vaddr; | |
4710 | if (! m->p_paddr_valid) | |
4711 | p->p_paddr = filehdr_paddr; | |
4712 | } | |
4713 | else if (m->includes_phdrs) | |
4714 | { | |
4715 | p->p_vaddr = phdrs_vaddr; | |
4716 | if (! m->p_paddr_valid) | |
4717 | p->p_paddr = phdrs_paddr; | |
252b5132 RH |
4718 | } |
4719 | } | |
4720 | ||
252b5132 RH |
4721 | elf_tdata (abfd)->next_file_pos = off; |
4722 | ||
b34976b6 | 4723 | return TRUE; |
252b5132 RH |
4724 | } |
4725 | ||
252b5132 RH |
4726 | /* Work out the file positions of all the sections. This is called by |
4727 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4728 | VMAs must be known before this is called. | |
4729 | ||
e0638f70 AM |
4730 | Reloc sections come in two flavours: Those processed specially as |
4731 | "side-channel" data attached to a section to which they apply, and | |
4732 | those that bfd doesn't process as relocations. The latter sort are | |
4733 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4734 | consider the former sort here, unless they form part of the loadable | |
4735 | image. Reloc sections not assigned here will be handled later by | |
4736 | assign_file_positions_for_relocs. | |
252b5132 RH |
4737 | |
4738 | We also don't set the positions of the .symtab and .strtab here. */ | |
4739 | ||
b34976b6 | 4740 | static bfd_boolean |
c84fca4d AO |
4741 | assign_file_positions_except_relocs (bfd *abfd, |
4742 | struct bfd_link_info *link_info) | |
252b5132 | 4743 | { |
5c182d5f AM |
4744 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4745 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4746 | file_ptr off; |
9c5bfbb7 | 4747 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4748 | |
4749 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4750 | && bfd_get_format (abfd) != bfd_core) | |
4751 | { | |
5c182d5f AM |
4752 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4753 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4754 | Elf_Internal_Shdr **hdrpp; |
4755 | unsigned int i; | |
4756 | ||
4757 | /* Start after the ELF header. */ | |
4758 | off = i_ehdrp->e_ehsize; | |
4759 | ||
4760 | /* We are not creating an executable, which means that we are | |
4761 | not creating a program header, and that the actual order of | |
4762 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4763 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4764 | { |
4765 | Elf_Internal_Shdr *hdr; | |
4766 | ||
4767 | hdr = *hdrpp; | |
e0638f70 AM |
4768 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4769 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4770 | || i == tdata->symtab_section |
4771 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4772 | || i == tdata->strtab_section) |
4773 | { | |
4774 | hdr->sh_offset = -1; | |
252b5132 | 4775 | } |
9ad5cbcf | 4776 | else |
b34976b6 | 4777 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
4778 | } |
4779 | } | |
4780 | else | |
4781 | { | |
f3520d2f AM |
4782 | unsigned int alloc; |
4783 | ||
252b5132 | 4784 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4785 | assignment of sections to segments. */ |
f3520d2f AM |
4786 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4787 | return FALSE; | |
4788 | ||
4789 | /* And for non-load sections. */ | |
4790 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4791 | return FALSE; | |
4792 | ||
e36284ab AM |
4793 | if (bed->elf_backend_modify_program_headers != NULL) |
4794 | { | |
4795 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4796 | return FALSE; | |
4797 | } | |
4798 | ||
f3520d2f AM |
4799 | /* Write out the program headers. */ |
4800 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4801 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4802 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4803 | return FALSE; |
252b5132 | 4804 | |
5c182d5f | 4805 | off = tdata->next_file_pos; |
252b5132 RH |
4806 | } |
4807 | ||
4808 | /* Place the section headers. */ | |
45d6a902 | 4809 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4810 | i_ehdrp->e_shoff = off; |
4811 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4812 | ||
5c182d5f | 4813 | tdata->next_file_pos = off; |
252b5132 | 4814 | |
b34976b6 | 4815 | return TRUE; |
252b5132 RH |
4816 | } |
4817 | ||
b34976b6 | 4818 | static bfd_boolean |
217aa764 | 4819 | prep_headers (bfd *abfd) |
252b5132 RH |
4820 | { |
4821 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4822 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
2b0f7ef9 | 4823 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4824 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4825 | |
4826 | i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4827 | |
2b0f7ef9 | 4828 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4829 | if (shstrtab == NULL) |
b34976b6 | 4830 | return FALSE; |
252b5132 RH |
4831 | |
4832 | elf_shstrtab (abfd) = shstrtab; | |
4833 | ||
4834 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4835 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4836 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4837 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4838 | ||
4839 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4840 | i_ehdrp->e_ident[EI_DATA] = | |
4841 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4842 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4843 | ||
252b5132 RH |
4844 | if ((abfd->flags & DYNAMIC) != 0) |
4845 | i_ehdrp->e_type = ET_DYN; | |
4846 | else if ((abfd->flags & EXEC_P) != 0) | |
4847 | i_ehdrp->e_type = ET_EXEC; | |
4848 | else if (bfd_get_format (abfd) == bfd_core) | |
4849 | i_ehdrp->e_type = ET_CORE; | |
4850 | else | |
4851 | i_ehdrp->e_type = ET_REL; | |
4852 | ||
4853 | switch (bfd_get_arch (abfd)) | |
4854 | { | |
4855 | case bfd_arch_unknown: | |
4856 | i_ehdrp->e_machine = EM_NONE; | |
4857 | break; | |
aa4f99bb AO |
4858 | |
4859 | /* There used to be a long list of cases here, each one setting | |
4860 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4861 | in the corresponding bfd definition. To avoid duplication, | |
4862 | the switch was removed. Machines that need special handling | |
4863 | can generally do it in elf_backend_final_write_processing(), | |
4864 | unless they need the information earlier than the final write. | |
4865 | Such need can generally be supplied by replacing the tests for | |
4866 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4867 | default: |
9c5bfbb7 AM |
4868 | i_ehdrp->e_machine = bed->elf_machine_code; |
4869 | } | |
aa4f99bb | 4870 | |
252b5132 RH |
4871 | i_ehdrp->e_version = bed->s->ev_current; |
4872 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4873 | ||
c044fabd | 4874 | /* No program header, for now. */ |
252b5132 RH |
4875 | i_ehdrp->e_phoff = 0; |
4876 | i_ehdrp->e_phentsize = 0; | |
4877 | i_ehdrp->e_phnum = 0; | |
4878 | ||
c044fabd | 4879 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4880 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4881 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4882 | ||
c044fabd | 4883 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4884 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4885 | /* It all happens later. */ |
4886 | ; | |
252b5132 RH |
4887 | else |
4888 | { | |
4889 | i_ehdrp->e_phentsize = 0; | |
4890 | i_phdrp = 0; | |
4891 | i_ehdrp->e_phoff = 0; | |
4892 | } | |
4893 | ||
4894 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4895 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4896 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4897 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4898 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4899 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4900 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4901 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4902 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4903 | return FALSE; |
252b5132 | 4904 | |
b34976b6 | 4905 | return TRUE; |
252b5132 RH |
4906 | } |
4907 | ||
4908 | /* Assign file positions for all the reloc sections which are not part | |
4909 | of the loadable file image. */ | |
4910 | ||
4911 | void | |
217aa764 | 4912 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4913 | { |
4914 | file_ptr off; | |
9ad5cbcf | 4915 | unsigned int i, num_sec; |
252b5132 RH |
4916 | Elf_Internal_Shdr **shdrpp; |
4917 | ||
4918 | off = elf_tdata (abfd)->next_file_pos; | |
4919 | ||
9ad5cbcf AM |
4920 | num_sec = elf_numsections (abfd); |
4921 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4922 | { |
4923 | Elf_Internal_Shdr *shdrp; | |
4924 | ||
4925 | shdrp = *shdrpp; | |
4926 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4927 | && shdrp->sh_offset == -1) | |
b34976b6 | 4928 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4929 | } |
4930 | ||
4931 | elf_tdata (abfd)->next_file_pos = off; | |
4932 | } | |
4933 | ||
b34976b6 | 4934 | bfd_boolean |
217aa764 | 4935 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4936 | { |
9c5bfbb7 | 4937 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4938 | Elf_Internal_Ehdr *i_ehdrp; |
4939 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4940 | bfd_boolean failed; |
9ad5cbcf | 4941 | unsigned int count, num_sec; |
252b5132 RH |
4942 | |
4943 | if (! abfd->output_has_begun | |
217aa764 | 4944 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4945 | return FALSE; |
252b5132 RH |
4946 | |
4947 | i_shdrp = elf_elfsections (abfd); | |
4948 | i_ehdrp = elf_elfheader (abfd); | |
4949 | ||
b34976b6 | 4950 | failed = FALSE; |
252b5132 RH |
4951 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4952 | if (failed) | |
b34976b6 | 4953 | return FALSE; |
252b5132 RH |
4954 | |
4955 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4956 | ||
c044fabd | 4957 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4958 | num_sec = elf_numsections (abfd); |
4959 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4960 | { |
4961 | if (bed->elf_backend_section_processing) | |
4962 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4963 | if (i_shdrp[count]->contents) | |
4964 | { | |
dc810e39 AM |
4965 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4966 | ||
252b5132 | 4967 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4968 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4969 | return FALSE; |
252b5132 RH |
4970 | } |
4971 | } | |
4972 | ||
4973 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4974 | if (elf_shstrtab (abfd) != NULL |
4975 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 4976 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 4977 | return FALSE; |
252b5132 RH |
4978 | |
4979 | if (bed->elf_backend_final_write_processing) | |
4980 | (*bed->elf_backend_final_write_processing) (abfd, | |
4981 | elf_tdata (abfd)->linker); | |
4982 | ||
ff59fc36 RM |
4983 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
4984 | return FALSE; | |
4985 | ||
4986 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
4987 | if (elf_tdata (abfd)->after_write_object_contents) |
4988 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
4989 | |
4990 | return TRUE; | |
252b5132 RH |
4991 | } |
4992 | ||
b34976b6 | 4993 | bfd_boolean |
217aa764 | 4994 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4995 | { |
c044fabd | 4996 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4997 | return _bfd_elf_write_object_contents (abfd); |
4998 | } | |
c044fabd KH |
4999 | |
5000 | /* Given a section, search the header to find them. */ | |
5001 | ||
cb33740c | 5002 | unsigned int |
198beae2 | 5003 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5004 | { |
9c5bfbb7 | 5005 | const struct elf_backend_data *bed; |
cb33740c | 5006 | unsigned int index; |
252b5132 | 5007 | |
9ad5cbcf AM |
5008 | if (elf_section_data (asect) != NULL |
5009 | && elf_section_data (asect)->this_idx != 0) | |
5010 | return elf_section_data (asect)->this_idx; | |
5011 | ||
5012 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5013 | index = SHN_ABS; |
5014 | else if (bfd_is_com_section (asect)) | |
5015 | index = SHN_COMMON; | |
5016 | else if (bfd_is_und_section (asect)) | |
5017 | index = SHN_UNDEF; | |
5018 | else | |
cb33740c | 5019 | index = SHN_BAD; |
252b5132 | 5020 | |
af746e92 | 5021 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5022 | if (bed->elf_backend_section_from_bfd_section) |
5023 | { | |
af746e92 | 5024 | int retval = index; |
9ad5cbcf | 5025 | |
af746e92 AM |
5026 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5027 | return retval; | |
252b5132 RH |
5028 | } |
5029 | ||
cb33740c | 5030 | if (index == SHN_BAD) |
af746e92 | 5031 | bfd_set_error (bfd_error_nonrepresentable_section); |
252b5132 | 5032 | |
af746e92 | 5033 | return index; |
252b5132 RH |
5034 | } |
5035 | ||
5036 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5037 | on error. */ | |
5038 | ||
5039 | int | |
217aa764 | 5040 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5041 | { |
5042 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5043 | int idx; | |
5044 | flagword flags = asym_ptr->flags; | |
5045 | ||
5046 | /* When gas creates relocations against local labels, it creates its | |
5047 | own symbol for the section, but does put the symbol into the | |
5048 | symbol chain, so udata is 0. When the linker is generating | |
5049 | relocatable output, this section symbol may be for one of the | |
5050 | input sections rather than the output section. */ | |
5051 | if (asym_ptr->udata.i == 0 | |
5052 | && (flags & BSF_SECTION_SYM) | |
5053 | && asym_ptr->section) | |
5054 | { | |
5372391b | 5055 | asection *sec; |
252b5132 RH |
5056 | int indx; |
5057 | ||
5372391b AM |
5058 | sec = asym_ptr->section; |
5059 | if (sec->owner != abfd && sec->output_section != NULL) | |
5060 | sec = sec->output_section; | |
5061 | if (sec->owner == abfd | |
5062 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5063 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5064 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5065 | } | |
5066 | ||
5067 | idx = asym_ptr->udata.i; | |
5068 | ||
5069 | if (idx == 0) | |
5070 | { | |
5071 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 5072 | which is used in a relocation entry. */ |
252b5132 | 5073 | (*_bfd_error_handler) |
d003868e AM |
5074 | (_("%B: symbol `%s' required but not present"), |
5075 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5076 | bfd_set_error (bfd_error_no_symbols); |
5077 | return -1; | |
5078 | } | |
5079 | ||
5080 | #if DEBUG & 4 | |
5081 | { | |
5082 | fprintf (stderr, | |
661a3fd4 | 5083 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5084 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5085 | elf_symbol_flags (flags)); | |
5086 | fflush (stderr); | |
5087 | } | |
5088 | #endif | |
5089 | ||
5090 | return idx; | |
5091 | } | |
5092 | ||
84d1d650 | 5093 | /* Rewrite program header information. */ |
252b5132 | 5094 | |
b34976b6 | 5095 | static bfd_boolean |
84d1d650 | 5096 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5097 | { |
b34976b6 AM |
5098 | Elf_Internal_Ehdr *iehdr; |
5099 | struct elf_segment_map *map; | |
5100 | struct elf_segment_map *map_first; | |
5101 | struct elf_segment_map **pointer_to_map; | |
5102 | Elf_Internal_Phdr *segment; | |
5103 | asection *section; | |
5104 | unsigned int i; | |
5105 | unsigned int num_segments; | |
5106 | bfd_boolean phdr_included = FALSE; | |
5c44b38e | 5107 | bfd_boolean p_paddr_valid; |
b34976b6 AM |
5108 | bfd_vma maxpagesize; |
5109 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5110 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5111 | const struct elf_backend_data *bed; |
bc67d8a6 | 5112 | |
caf47ea6 | 5113 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5114 | iehdr = elf_elfheader (ibfd); |
5115 | ||
bc67d8a6 | 5116 | map_first = NULL; |
c044fabd | 5117 | pointer_to_map = &map_first; |
252b5132 RH |
5118 | |
5119 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5120 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5121 | ||
5122 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5123 | #define SEGMENT_END(segment, start) \ |
5124 | (start + (segment->p_memsz > segment->p_filesz \ | |
5125 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5126 | |
eecdbe52 JJ |
5127 | #define SECTION_SIZE(section, segment) \ |
5128 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5129 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5130 | ? section->size : 0) |
eecdbe52 | 5131 | |
b34976b6 | 5132 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5133 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5134 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5135 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5136 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5137 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5138 | |
b34976b6 | 5139 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5140 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5141 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5142 | (section->lma >= base \ | |
eecdbe52 | 5143 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5144 | <= SEGMENT_END (segment, base))) |
252b5132 | 5145 | |
0efc80c8 L |
5146 | /* Handle PT_NOTE segment. */ |
5147 | #define IS_NOTE(p, s) \ | |
aecc8f8a | 5148 | (p->p_type == PT_NOTE \ |
0efc80c8 | 5149 | && elf_section_type (s) == SHT_NOTE \ |
aecc8f8a | 5150 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5151 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5152 | <= p->p_offset + p->p_filesz)) |
252b5132 | 5153 | |
0efc80c8 L |
5154 | /* Special case: corefile "NOTE" section containing regs, prpsinfo |
5155 | etc. */ | |
5156 | #define IS_COREFILE_NOTE(p, s) \ | |
5157 | (IS_NOTE (p, s) \ | |
5158 | && bfd_get_format (ibfd) == bfd_core \ | |
5159 | && s->vma == 0 \ | |
5160 | && s->lma == 0) | |
5161 | ||
252b5132 RH |
5162 | /* The complicated case when p_vaddr is 0 is to handle the Solaris |
5163 | linker, which generates a PT_INTERP section with p_vaddr and | |
5164 | p_memsz set to 0. */ | |
aecc8f8a AM |
5165 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5166 | (p->p_vaddr == 0 \ | |
5167 | && p->p_paddr == 0 \ | |
5168 | && p->p_memsz == 0 \ | |
5169 | && p->p_filesz > 0 \ | |
5170 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5171 | && s->size > 0 \ |
aecc8f8a | 5172 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5173 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5174 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5175 | |
bc67d8a6 NC |
5176 | /* Decide if the given section should be included in the given segment. |
5177 | A section will be included if: | |
f5ffc919 | 5178 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5179 | if that is set for the segment and the VMA otherwise, |
0efc80c8 L |
5180 | 2. It is an allocated section or a NOTE section in a PT_NOTE |
5181 | segment. | |
bc67d8a6 | 5182 | 3. There is an output section associated with it, |
eecdbe52 | 5183 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 5184 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 5185 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
5186 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5187 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5188 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5189 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
5190 | ((((segment->p_paddr \ |
5191 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5192 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
5193 | && (section->flags & SEC_ALLOC) != 0) \ | |
0efc80c8 | 5194 | || IS_NOTE (segment, section)) \ |
2b05f1b7 L |
5195 | && segment->p_type != PT_GNU_STACK \ |
5196 | && (segment->p_type != PT_TLS \ | |
5197 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5198 | && (segment->p_type == PT_LOAD \ | |
5199 | || segment->p_type == PT_TLS \ | |
5200 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
5201 | && (segment->p_type != PT_DYNAMIC \ | |
5202 | || SECTION_SIZE (section, segment) > 0 \ | |
5203 | || (segment->p_paddr \ | |
5204 | ? segment->p_paddr != section->lma \ | |
5205 | : segment->p_vaddr != section->vma) \ | |
5206 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5207 | == 0)) \ | |
0067a569 | 5208 | && !section->segment_mark) |
bc67d8a6 | 5209 | |
9f17e2a6 L |
5210 | /* If the output section of a section in the input segment is NULL, |
5211 | it is removed from the corresponding output segment. */ | |
5212 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5213 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5214 | && section->output_section != NULL) | |
5215 | ||
b34976b6 | 5216 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5217 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5218 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5219 | ||
5220 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5221 | their VMA address ranges and their LMA address ranges overlap. | |
5222 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5223 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5224 | to the same VMA range, but with the .data section mapped to a different | |
5225 | LMA. */ | |
aecc8f8a | 5226 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5227 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5228 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5229 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5230 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5231 | |
5232 | /* Initialise the segment mark field. */ | |
5233 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5234 | section->segment_mark = FALSE; |
bc67d8a6 | 5235 | |
5c44b38e AM |
5236 | /* The Solaris linker creates program headers in which all the |
5237 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5238 | file, we get confused. Check for this case, and if we find it | |
5239 | don't set the p_paddr_valid fields. */ | |
5240 | p_paddr_valid = FALSE; | |
5241 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5242 | i < num_segments; | |
5243 | i++, segment++) | |
5244 | if (segment->p_paddr != 0) | |
5245 | { | |
5246 | p_paddr_valid = TRUE; | |
5247 | break; | |
5248 | } | |
5249 | ||
252b5132 | 5250 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5251 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5252 | in the loadable segments. These can be created by weird |
aecc8f8a | 5253 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5254 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5255 | i < num_segments; | |
c044fabd | 5256 | i++, segment++) |
252b5132 | 5257 | { |
252b5132 | 5258 | unsigned int j; |
c044fabd | 5259 | Elf_Internal_Phdr *segment2; |
252b5132 | 5260 | |
aecc8f8a AM |
5261 | if (segment->p_type == PT_INTERP) |
5262 | for (section = ibfd->sections; section; section = section->next) | |
5263 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5264 | { | |
5265 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5266 | assignment code will work. */ |
aecc8f8a AM |
5267 | segment->p_vaddr = section->vma; |
5268 | break; | |
5269 | } | |
5270 | ||
bc67d8a6 | 5271 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
5272 | { |
5273 | /* Remove PT_GNU_RELRO segment. */ | |
5274 | if (segment->p_type == PT_GNU_RELRO) | |
5275 | segment->p_type = PT_NULL; | |
5276 | continue; | |
5277 | } | |
c044fabd | 5278 | |
bc67d8a6 | 5279 | /* Determine if this segment overlaps any previous segments. */ |
0067a569 | 5280 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++) |
bc67d8a6 NC |
5281 | { |
5282 | bfd_signed_vma extra_length; | |
c044fabd | 5283 | |
bc67d8a6 | 5284 | if (segment2->p_type != PT_LOAD |
0067a569 | 5285 | || !SEGMENT_OVERLAPS (segment, segment2)) |
bc67d8a6 | 5286 | continue; |
c044fabd | 5287 | |
bc67d8a6 NC |
5288 | /* Merge the two segments together. */ |
5289 | if (segment2->p_vaddr < segment->p_vaddr) | |
5290 | { | |
c044fabd | 5291 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5292 | SEGMENT. */ |
0067a569 AM |
5293 | extra_length = (SEGMENT_END (segment, segment->p_vaddr) |
5294 | - SEGMENT_END (segment2, segment2->p_vaddr)); | |
c044fabd | 5295 | |
bc67d8a6 NC |
5296 | if (extra_length > 0) |
5297 | { | |
0067a569 | 5298 | segment2->p_memsz += extra_length; |
bc67d8a6 NC |
5299 | segment2->p_filesz += extra_length; |
5300 | } | |
c044fabd | 5301 | |
bc67d8a6 | 5302 | segment->p_type = PT_NULL; |
c044fabd | 5303 | |
bc67d8a6 NC |
5304 | /* Since we have deleted P we must restart the outer loop. */ |
5305 | i = 0; | |
5306 | segment = elf_tdata (ibfd)->phdr; | |
5307 | break; | |
5308 | } | |
5309 | else | |
5310 | { | |
c044fabd | 5311 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5312 | SEGMENT2. */ |
0067a569 AM |
5313 | extra_length = (SEGMENT_END (segment2, segment2->p_vaddr) |
5314 | - SEGMENT_END (segment, segment->p_vaddr)); | |
c044fabd | 5315 | |
bc67d8a6 NC |
5316 | if (extra_length > 0) |
5317 | { | |
0067a569 | 5318 | segment->p_memsz += extra_length; |
bc67d8a6 NC |
5319 | segment->p_filesz += extra_length; |
5320 | } | |
c044fabd | 5321 | |
bc67d8a6 NC |
5322 | segment2->p_type = PT_NULL; |
5323 | } | |
5324 | } | |
5325 | } | |
c044fabd | 5326 | |
bc67d8a6 NC |
5327 | /* The second scan attempts to assign sections to segments. */ |
5328 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5329 | i < num_segments; | |
0067a569 | 5330 | i++, segment++) |
bc67d8a6 | 5331 | { |
0067a569 AM |
5332 | unsigned int section_count; |
5333 | asection **sections; | |
5334 | asection *output_section; | |
5335 | unsigned int isec; | |
5336 | bfd_vma matching_lma; | |
5337 | bfd_vma suggested_lma; | |
5338 | unsigned int j; | |
dc810e39 | 5339 | bfd_size_type amt; |
0067a569 AM |
5340 | asection *first_section; |
5341 | bfd_boolean first_matching_lma; | |
5342 | bfd_boolean first_suggested_lma; | |
bc67d8a6 NC |
5343 | |
5344 | if (segment->p_type == PT_NULL) | |
5345 | continue; | |
c044fabd | 5346 | |
9f17e2a6 | 5347 | first_section = NULL; |
bc67d8a6 | 5348 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5349 | for (section = ibfd->sections, section_count = 0; |
5350 | section != NULL; | |
5351 | section = section->next) | |
9f17e2a6 L |
5352 | { |
5353 | /* Find the first section in the input segment, which may be | |
5354 | removed from the corresponding output segment. */ | |
5355 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5356 | { | |
5357 | if (first_section == NULL) | |
5358 | first_section = section; | |
5359 | if (section->output_section != NULL) | |
5360 | ++section_count; | |
5361 | } | |
5362 | } | |
811072d8 | 5363 | |
b5f852ea NC |
5364 | /* Allocate a segment map big enough to contain |
5365 | all of the sections we have selected. */ | |
dc810e39 AM |
5366 | amt = sizeof (struct elf_segment_map); |
5367 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5368 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5369 | if (map == NULL) |
b34976b6 | 5370 | return FALSE; |
252b5132 RH |
5371 | |
5372 | /* Initialise the fields of the segment map. Default to | |
5373 | using the physical address of the segment in the input BFD. */ | |
0067a569 AM |
5374 | map->next = NULL; |
5375 | map->p_type = segment->p_type; | |
5376 | map->p_flags = segment->p_flags; | |
bc67d8a6 | 5377 | map->p_flags_valid = 1; |
55d55ac7 | 5378 | |
9f17e2a6 L |
5379 | /* If the first section in the input segment is removed, there is |
5380 | no need to preserve segment physical address in the corresponding | |
5381 | output segment. */ | |
945c025a | 5382 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5383 | { |
5384 | map->p_paddr = segment->p_paddr; | |
5c44b38e | 5385 | map->p_paddr_valid = p_paddr_valid; |
9f17e2a6 | 5386 | } |
252b5132 RH |
5387 | |
5388 | /* Determine if this segment contains the ELF file header | |
5389 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5390 | map->includes_filehdr = (segment->p_offset == 0 |
5391 | && segment->p_filesz >= iehdr->e_ehsize); | |
bc67d8a6 | 5392 | map->includes_phdrs = 0; |
252b5132 | 5393 | |
0067a569 | 5394 | if (!phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5395 | { |
bc67d8a6 NC |
5396 | map->includes_phdrs = |
5397 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5398 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5399 | >= ((bfd_vma) iehdr->e_phoff |
5400 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5401 | |
bc67d8a6 | 5402 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5403 | phdr_included = TRUE; |
252b5132 RH |
5404 | } |
5405 | ||
bc67d8a6 | 5406 | if (section_count == 0) |
252b5132 RH |
5407 | { |
5408 | /* Special segments, such as the PT_PHDR segment, may contain | |
5409 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5410 | something. They are allowed by the ELF spec however, so only |
5411 | a warning is produced. */ | |
bc67d8a6 | 5412 | if (segment->p_type == PT_LOAD) |
0067a569 AM |
5413 | (*_bfd_error_handler) (_("%B: warning: Empty loadable segment" |
5414 | " detected, is this intentional ?\n"), | |
5415 | ibfd); | |
252b5132 | 5416 | |
bc67d8a6 | 5417 | map->count = 0; |
c044fabd KH |
5418 | *pointer_to_map = map; |
5419 | pointer_to_map = &map->next; | |
252b5132 RH |
5420 | |
5421 | continue; | |
5422 | } | |
5423 | ||
5424 | /* Now scan the sections in the input BFD again and attempt | |
5425 | to add their corresponding output sections to the segment map. | |
5426 | The problem here is how to handle an output section which has | |
5427 | been moved (ie had its LMA changed). There are four possibilities: | |
5428 | ||
5429 | 1. None of the sections have been moved. | |
5430 | In this case we can continue to use the segment LMA from the | |
5431 | input BFD. | |
5432 | ||
5433 | 2. All of the sections have been moved by the same amount. | |
5434 | In this case we can change the segment's LMA to match the LMA | |
5435 | of the first section. | |
5436 | ||
5437 | 3. Some of the sections have been moved, others have not. | |
5438 | In this case those sections which have not been moved can be | |
5439 | placed in the current segment which will have to have its size, | |
5440 | and possibly its LMA changed, and a new segment or segments will | |
5441 | have to be created to contain the other sections. | |
5442 | ||
b5f852ea | 5443 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5444 | In this case we can change the segment's LMA to match the LMA |
5445 | of the first section and we will have to create a new segment | |
5446 | or segments to contain the other sections. | |
5447 | ||
5448 | In order to save time, we allocate an array to hold the section | |
5449 | pointers that we are interested in. As these sections get assigned | |
5450 | to a segment, they are removed from this array. */ | |
5451 | ||
d0fb9a8d | 5452 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5453 | if (sections == NULL) |
b34976b6 | 5454 | return FALSE; |
252b5132 RH |
5455 | |
5456 | /* Step One: Scan for segment vs section LMA conflicts. | |
5457 | Also add the sections to the section array allocated above. | |
5458 | Also add the sections to the current segment. In the common | |
5459 | case, where the sections have not been moved, this means that | |
5460 | we have completely filled the segment, and there is nothing | |
5461 | more to do. */ | |
252b5132 | 5462 | isec = 0; |
72730e0c | 5463 | matching_lma = 0; |
252b5132 | 5464 | suggested_lma = 0; |
0067a569 AM |
5465 | first_matching_lma = TRUE; |
5466 | first_suggested_lma = TRUE; | |
252b5132 | 5467 | |
147d51c2 | 5468 | for (section = ibfd->sections; |
bc67d8a6 NC |
5469 | section != NULL; |
5470 | section = section->next) | |
147d51c2 L |
5471 | if (section == first_section) |
5472 | break; | |
5473 | ||
5474 | for (j = 0; section != NULL; section = section->next) | |
252b5132 | 5475 | { |
caf47ea6 | 5476 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5477 | { |
bc67d8a6 NC |
5478 | output_section = section->output_section; |
5479 | ||
0067a569 | 5480 | sections[j++] = section; |
252b5132 RH |
5481 | |
5482 | /* The Solaris native linker always sets p_paddr to 0. | |
5483 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5484 | correct value. Note - some backends require that |
5485 | p_paddr be left as zero. */ | |
5c44b38e | 5486 | if (!p_paddr_valid |
4455705d | 5487 | && segment->p_vaddr != 0 |
0067a569 | 5488 | && !bed->want_p_paddr_set_to_zero |
252b5132 | 5489 | && isec == 0 |
bc67d8a6 | 5490 | && output_section->lma != 0 |
0067a569 AM |
5491 | && output_section->vma == (segment->p_vaddr |
5492 | + (map->includes_filehdr | |
5493 | ? iehdr->e_ehsize | |
5494 | : 0) | |
5495 | + (map->includes_phdrs | |
5496 | ? (iehdr->e_phnum | |
5497 | * iehdr->e_phentsize) | |
5498 | : 0))) | |
bc67d8a6 | 5499 | map->p_paddr = segment->p_vaddr; |
252b5132 RH |
5500 | |
5501 | /* Match up the physical address of the segment with the | |
5502 | LMA address of the output section. */ | |
bc67d8a6 | 5503 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 | 5504 | || IS_COREFILE_NOTE (segment, section) |
0067a569 AM |
5505 | || (bed->want_p_paddr_set_to_zero |
5506 | && IS_CONTAINED_BY_VMA (output_section, segment))) | |
252b5132 | 5507 | { |
0067a569 AM |
5508 | if (first_matching_lma || output_section->lma < matching_lma) |
5509 | { | |
5510 | matching_lma = output_section->lma; | |
5511 | first_matching_lma = FALSE; | |
5512 | } | |
252b5132 RH |
5513 | |
5514 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5515 | then it does not overlap any other section within that |
252b5132 | 5516 | segment. */ |
0067a569 AM |
5517 | map->sections[isec++] = output_section; |
5518 | } | |
5519 | else if (first_suggested_lma) | |
5520 | { | |
5521 | suggested_lma = output_section->lma; | |
5522 | first_suggested_lma = FALSE; | |
252b5132 | 5523 | } |
147d51c2 L |
5524 | |
5525 | if (j == section_count) | |
5526 | break; | |
252b5132 RH |
5527 | } |
5528 | } | |
5529 | ||
bc67d8a6 | 5530 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5531 | |
5532 | /* Step Two: Adjust the physical address of the current segment, | |
5533 | if necessary. */ | |
bc67d8a6 | 5534 | if (isec == section_count) |
252b5132 RH |
5535 | { |
5536 | /* All of the sections fitted within the segment as currently | |
5537 | specified. This is the default case. Add the segment to | |
5538 | the list of built segments and carry on to process the next | |
5539 | program header in the input BFD. */ | |
bc67d8a6 | 5540 | map->count = section_count; |
c044fabd KH |
5541 | *pointer_to_map = map; |
5542 | pointer_to_map = &map->next; | |
08a40648 | 5543 | |
5c44b38e AM |
5544 | if (p_paddr_valid |
5545 | && !bed->want_p_paddr_set_to_zero | |
147d51c2 | 5546 | && matching_lma != map->p_paddr |
5c44b38e AM |
5547 | && !map->includes_filehdr |
5548 | && !map->includes_phdrs) | |
3271a814 NS |
5549 | /* There is some padding before the first section in the |
5550 | segment. So, we must account for that in the output | |
5551 | segment's vma. */ | |
5552 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5553 | |
252b5132 RH |
5554 | free (sections); |
5555 | continue; | |
5556 | } | |
252b5132 RH |
5557 | else |
5558 | { | |
0067a569 | 5559 | if (!first_matching_lma) |
72730e0c AM |
5560 | { |
5561 | /* At least one section fits inside the current segment. | |
5562 | Keep it, but modify its physical address to match the | |
5563 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5564 | map->p_paddr = matching_lma; |
72730e0c AM |
5565 | } |
5566 | else | |
5567 | { | |
5568 | /* None of the sections fitted inside the current segment. | |
5569 | Change the current segment's physical address to match | |
5570 | the LMA of the first section. */ | |
bc67d8a6 | 5571 | map->p_paddr = suggested_lma; |
72730e0c AM |
5572 | } |
5573 | ||
bc67d8a6 NC |
5574 | /* Offset the segment physical address from the lma |
5575 | to allow for space taken up by elf headers. */ | |
5576 | if (map->includes_filehdr) | |
010c8431 AM |
5577 | { |
5578 | if (map->p_paddr >= iehdr->e_ehsize) | |
5579 | map->p_paddr -= iehdr->e_ehsize; | |
5580 | else | |
5581 | { | |
5582 | map->includes_filehdr = FALSE; | |
5583 | map->includes_phdrs = FALSE; | |
5584 | } | |
5585 | } | |
252b5132 | 5586 | |
bc67d8a6 NC |
5587 | if (map->includes_phdrs) |
5588 | { | |
010c8431 AM |
5589 | if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize) |
5590 | { | |
5591 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5592 | ||
5593 | /* iehdr->e_phnum is just an estimate of the number | |
5594 | of program headers that we will need. Make a note | |
5595 | here of the number we used and the segment we chose | |
5596 | to hold these headers, so that we can adjust the | |
5597 | offset when we know the correct value. */ | |
5598 | phdr_adjust_num = iehdr->e_phnum; | |
5599 | phdr_adjust_seg = map; | |
5600 | } | |
5601 | else | |
5602 | map->includes_phdrs = FALSE; | |
bc67d8a6 | 5603 | } |
252b5132 RH |
5604 | } |
5605 | ||
5606 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5607 | those that fit to the current segment and removing them from the |
252b5132 RH |
5608 | sections array; but making sure not to leave large gaps. Once all |
5609 | possible sections have been assigned to the current segment it is | |
5610 | added to the list of built segments and if sections still remain | |
5611 | to be assigned, a new segment is constructed before repeating | |
5612 | the loop. */ | |
5613 | isec = 0; | |
5614 | do | |
5615 | { | |
bc67d8a6 | 5616 | map->count = 0; |
252b5132 | 5617 | suggested_lma = 0; |
0067a569 | 5618 | first_suggested_lma = TRUE; |
252b5132 RH |
5619 | |
5620 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5621 | for (j = 0; j < section_count; j++) |
252b5132 | 5622 | { |
bc67d8a6 | 5623 | section = sections[j]; |
252b5132 | 5624 | |
bc67d8a6 | 5625 | if (section == NULL) |
252b5132 RH |
5626 | continue; |
5627 | ||
bc67d8a6 | 5628 | output_section = section->output_section; |
252b5132 | 5629 | |
bc67d8a6 | 5630 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5631 | |
bc67d8a6 NC |
5632 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5633 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5634 | { |
bc67d8a6 | 5635 | if (map->count == 0) |
252b5132 RH |
5636 | { |
5637 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5638 | the beginning of the segment, then something is |
5639 | wrong. */ | |
0067a569 AM |
5640 | if (output_section->lma |
5641 | != (map->p_paddr | |
5642 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5643 | + (map->includes_phdrs | |
5644 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5645 | : 0))) | |
252b5132 RH |
5646 | abort (); |
5647 | } | |
5648 | else | |
5649 | { | |
0067a569 | 5650 | asection *prev_sec; |
252b5132 | 5651 | |
bc67d8a6 | 5652 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5653 | |
5654 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5655 | and the start of this section is more than |
5656 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5657 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5658 | maxpagesize) |
caf47ea6 | 5659 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
0067a569 | 5660 | || (prev_sec->lma + prev_sec->size |
079e9a2f | 5661 | > output_section->lma)) |
252b5132 | 5662 | { |
0067a569 AM |
5663 | if (first_suggested_lma) |
5664 | { | |
5665 | suggested_lma = output_section->lma; | |
5666 | first_suggested_lma = FALSE; | |
5667 | } | |
252b5132 RH |
5668 | |
5669 | continue; | |
5670 | } | |
5671 | } | |
5672 | ||
bc67d8a6 | 5673 | map->sections[map->count++] = output_section; |
252b5132 RH |
5674 | ++isec; |
5675 | sections[j] = NULL; | |
b34976b6 | 5676 | section->segment_mark = TRUE; |
252b5132 | 5677 | } |
0067a569 AM |
5678 | else if (first_suggested_lma) |
5679 | { | |
5680 | suggested_lma = output_section->lma; | |
5681 | first_suggested_lma = FALSE; | |
5682 | } | |
252b5132 RH |
5683 | } |
5684 | ||
bc67d8a6 | 5685 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5686 | |
5687 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5688 | *pointer_to_map = map; |
5689 | pointer_to_map = &map->next; | |
252b5132 | 5690 | |
bc67d8a6 | 5691 | if (isec < section_count) |
252b5132 RH |
5692 | { |
5693 | /* We still have not allocated all of the sections to | |
5694 | segments. Create a new segment here, initialise it | |
5695 | and carry on looping. */ | |
dc810e39 AM |
5696 | amt = sizeof (struct elf_segment_map); |
5697 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5698 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5699 | if (map == NULL) |
5ed6aba4 NC |
5700 | { |
5701 | free (sections); | |
5702 | return FALSE; | |
5703 | } | |
252b5132 RH |
5704 | |
5705 | /* Initialise the fields of the segment map. Set the physical | |
5706 | physical address to the LMA of the first section that has | |
5707 | not yet been assigned. */ | |
0067a569 AM |
5708 | map->next = NULL; |
5709 | map->p_type = segment->p_type; | |
5710 | map->p_flags = segment->p_flags; | |
5711 | map->p_flags_valid = 1; | |
5712 | map->p_paddr = suggested_lma; | |
5c44b38e | 5713 | map->p_paddr_valid = p_paddr_valid; |
bc67d8a6 | 5714 | map->includes_filehdr = 0; |
0067a569 | 5715 | map->includes_phdrs = 0; |
252b5132 RH |
5716 | } |
5717 | } | |
bc67d8a6 | 5718 | while (isec < section_count); |
252b5132 RH |
5719 | |
5720 | free (sections); | |
5721 | } | |
5722 | ||
bc67d8a6 NC |
5723 | elf_tdata (obfd)->segment_map = map_first; |
5724 | ||
5725 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5726 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5727 | the offset if necessary. */ |
5728 | if (phdr_adjust_seg != NULL) | |
5729 | { | |
5730 | unsigned int count; | |
c044fabd | 5731 | |
bc67d8a6 | 5732 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5733 | count++; |
252b5132 | 5734 | |
bc67d8a6 NC |
5735 | if (count > phdr_adjust_num) |
5736 | phdr_adjust_seg->p_paddr | |
5737 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5738 | } | |
c044fabd | 5739 | |
bc67d8a6 | 5740 | #undef SEGMENT_END |
eecdbe52 | 5741 | #undef SECTION_SIZE |
bc67d8a6 NC |
5742 | #undef IS_CONTAINED_BY_VMA |
5743 | #undef IS_CONTAINED_BY_LMA | |
0efc80c8 | 5744 | #undef IS_NOTE |
252b5132 | 5745 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5746 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5747 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5748 | #undef INCLUDE_SECTION_IN_SEGMENT |
5749 | #undef SEGMENT_AFTER_SEGMENT | |
5750 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5751 | return TRUE; |
252b5132 RH |
5752 | } |
5753 | ||
84d1d650 L |
5754 | /* Copy ELF program header information. */ |
5755 | ||
5756 | static bfd_boolean | |
5757 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5758 | { | |
5759 | Elf_Internal_Ehdr *iehdr; | |
5760 | struct elf_segment_map *map; | |
5761 | struct elf_segment_map *map_first; | |
5762 | struct elf_segment_map **pointer_to_map; | |
5763 | Elf_Internal_Phdr *segment; | |
5764 | unsigned int i; | |
5765 | unsigned int num_segments; | |
5766 | bfd_boolean phdr_included = FALSE; | |
88967714 | 5767 | bfd_boolean p_paddr_valid; |
84d1d650 L |
5768 | |
5769 | iehdr = elf_elfheader (ibfd); | |
5770 | ||
5771 | map_first = NULL; | |
5772 | pointer_to_map = &map_first; | |
5773 | ||
88967714 AM |
5774 | /* If all the segment p_paddr fields are zero, don't set |
5775 | map->p_paddr_valid. */ | |
5776 | p_paddr_valid = FALSE; | |
84d1d650 | 5777 | num_segments = elf_elfheader (ibfd)->e_phnum; |
88967714 AM |
5778 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5779 | i < num_segments; | |
5780 | i++, segment++) | |
5781 | if (segment->p_paddr != 0) | |
5782 | { | |
5783 | p_paddr_valid = TRUE; | |
5784 | break; | |
5785 | } | |
5786 | ||
84d1d650 L |
5787 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5788 | i < num_segments; | |
5789 | i++, segment++) | |
5790 | { | |
5791 | asection *section; | |
5792 | unsigned int section_count; | |
5793 | bfd_size_type amt; | |
5794 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5795 | asection *first_section = NULL; |
c981028a | 5796 | asection *lowest_section = NULL; |
84d1d650 | 5797 | |
84d1d650 L |
5798 | /* Compute how many sections are in this segment. */ |
5799 | for (section = ibfd->sections, section_count = 0; | |
5800 | section != NULL; | |
5801 | section = section->next) | |
5802 | { | |
5803 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5804 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5805 | { |
53020534 | 5806 | if (!first_section) |
c981028a DJ |
5807 | first_section = lowest_section = section; |
5808 | if (section->lma < lowest_section->lma) | |
5809 | lowest_section = section; | |
3271a814 NS |
5810 | section_count++; |
5811 | } | |
84d1d650 L |
5812 | } |
5813 | ||
5814 | /* Allocate a segment map big enough to contain | |
5815 | all of the sections we have selected. */ | |
5816 | amt = sizeof (struct elf_segment_map); | |
5817 | if (section_count != 0) | |
5818 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5819 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5820 | if (map == NULL) |
5821 | return FALSE; | |
5822 | ||
5823 | /* Initialize the fields of the output segment map with the | |
5824 | input segment. */ | |
5825 | map->next = NULL; | |
5826 | map->p_type = segment->p_type; | |
5827 | map->p_flags = segment->p_flags; | |
5828 | map->p_flags_valid = 1; | |
5829 | map->p_paddr = segment->p_paddr; | |
88967714 | 5830 | map->p_paddr_valid = p_paddr_valid; |
3f570048 AM |
5831 | map->p_align = segment->p_align; |
5832 | map->p_align_valid = 1; | |
3271a814 | 5833 | map->p_vaddr_offset = 0; |
84d1d650 | 5834 | |
9433b9b1 | 5835 | if (map->p_type == PT_GNU_RELRO) |
b10a8ae0 L |
5836 | { |
5837 | /* The PT_GNU_RELRO segment may contain the first a few | |
5838 | bytes in the .got.plt section even if the whole .got.plt | |
5839 | section isn't in the PT_GNU_RELRO segment. We won't | |
5840 | change the size of the PT_GNU_RELRO segment. */ | |
9433b9b1 | 5841 | map->p_size = segment->p_memsz; |
b10a8ae0 L |
5842 | map->p_size_valid = 1; |
5843 | } | |
5844 | ||
84d1d650 L |
5845 | /* Determine if this segment contains the ELF file header |
5846 | and if it contains the program headers themselves. */ | |
5847 | map->includes_filehdr = (segment->p_offset == 0 | |
5848 | && segment->p_filesz >= iehdr->e_ehsize); | |
5849 | ||
5850 | map->includes_phdrs = 0; | |
5851 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5852 | { | |
5853 | map->includes_phdrs = | |
5854 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5855 | && (segment->p_offset + segment->p_filesz | |
5856 | >= ((bfd_vma) iehdr->e_phoff | |
5857 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5858 | ||
5859 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5860 | phdr_included = TRUE; | |
5861 | } | |
5862 | ||
2b0bc088 NC |
5863 | if (map->includes_filehdr && first_section) |
5864 | /* We need to keep the space used by the headers fixed. */ | |
5865 | map->header_size = first_section->vma - segment->p_vaddr; | |
5866 | ||
88967714 AM |
5867 | if (!map->includes_phdrs |
5868 | && !map->includes_filehdr | |
5869 | && map->p_paddr_valid) | |
3271a814 | 5870 | /* There is some other padding before the first section. */ |
c981028a | 5871 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) |
53020534 | 5872 | - segment->p_paddr); |
08a40648 | 5873 | |
84d1d650 L |
5874 | if (section_count != 0) |
5875 | { | |
5876 | unsigned int isec = 0; | |
5877 | ||
53020534 | 5878 | for (section = first_section; |
84d1d650 L |
5879 | section != NULL; |
5880 | section = section->next) | |
5881 | { | |
5882 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5883 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5884 | { |
5885 | map->sections[isec++] = section->output_section; | |
5886 | if (isec == section_count) | |
5887 | break; | |
5888 | } | |
84d1d650 L |
5889 | } |
5890 | } | |
5891 | ||
5892 | map->count = section_count; | |
5893 | *pointer_to_map = map; | |
5894 | pointer_to_map = &map->next; | |
5895 | } | |
5896 | ||
5897 | elf_tdata (obfd)->segment_map = map_first; | |
5898 | return TRUE; | |
5899 | } | |
5900 | ||
5901 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5902 | information. */ | |
5903 | ||
5904 | static bfd_boolean | |
5905 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5906 | { | |
84d1d650 L |
5907 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5908 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5909 | return TRUE; | |
5910 | ||
5911 | if (elf_tdata (ibfd)->phdr == NULL) | |
5912 | return TRUE; | |
5913 | ||
5914 | if (ibfd->xvec == obfd->xvec) | |
5915 | { | |
cb3ff1e5 NC |
5916 | /* Check to see if any sections in the input BFD |
5917 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5918 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5919 | asection *section, *osec; |
5920 | unsigned int i, num_segments; | |
5921 | Elf_Internal_Shdr *this_hdr; | |
147d51c2 L |
5922 | const struct elf_backend_data *bed; |
5923 | ||
5924 | bed = get_elf_backend_data (ibfd); | |
5925 | ||
5926 | /* Regenerate the segment map if p_paddr is set to 0. */ | |
5927 | if (bed->want_p_paddr_set_to_zero) | |
5928 | goto rewrite; | |
84d1d650 L |
5929 | |
5930 | /* Initialize the segment mark field. */ | |
5931 | for (section = obfd->sections; section != NULL; | |
5932 | section = section->next) | |
5933 | section->segment_mark = FALSE; | |
5934 | ||
5935 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5936 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5937 | i < num_segments; | |
5938 | i++, segment++) | |
5939 | { | |
5f6999aa NC |
5940 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5941 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5942 | which severly confuses things, so always regenerate the segment | |
5943 | map in this case. */ | |
5944 | if (segment->p_paddr == 0 | |
5945 | && segment->p_memsz == 0 | |
5946 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5947 | goto rewrite; |
5f6999aa | 5948 | |
84d1d650 L |
5949 | for (section = ibfd->sections; |
5950 | section != NULL; section = section->next) | |
5951 | { | |
5952 | /* We mark the output section so that we know it comes | |
5953 | from the input BFD. */ | |
5954 | osec = section->output_section; | |
5955 | if (osec) | |
5956 | osec->segment_mark = TRUE; | |
5957 | ||
5958 | /* Check if this section is covered by the segment. */ | |
5959 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5960 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5961 | { | |
5962 | /* FIXME: Check if its output section is changed or | |
5963 | removed. What else do we need to check? */ | |
5964 | if (osec == NULL | |
5965 | || section->flags != osec->flags | |
5966 | || section->lma != osec->lma | |
5967 | || section->vma != osec->vma | |
5968 | || section->size != osec->size | |
5969 | || section->rawsize != osec->rawsize | |
5970 | || section->alignment_power != osec->alignment_power) | |
5971 | goto rewrite; | |
5972 | } | |
5973 | } | |
5974 | } | |
5975 | ||
cb3ff1e5 | 5976 | /* Check to see if any output section do not come from the |
84d1d650 L |
5977 | input BFD. */ |
5978 | for (section = obfd->sections; section != NULL; | |
5979 | section = section->next) | |
5980 | { | |
5981 | if (section->segment_mark == FALSE) | |
5982 | goto rewrite; | |
5983 | else | |
5984 | section->segment_mark = FALSE; | |
5985 | } | |
5986 | ||
5987 | return copy_elf_program_header (ibfd, obfd); | |
5988 | } | |
5989 | ||
5990 | rewrite: | |
5991 | return rewrite_elf_program_header (ibfd, obfd); | |
5992 | } | |
5993 | ||
ccd2ec6a L |
5994 | /* Initialize private output section information from input section. */ |
5995 | ||
5996 | bfd_boolean | |
5997 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5998 | asection *isec, | |
5999 | bfd *obfd, | |
6000 | asection *osec, | |
6001 | struct bfd_link_info *link_info) | |
6002 | ||
6003 | { | |
6004 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6005 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
6006 | ||
6007 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6008 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
6009 | return TRUE; | |
6010 | ||
e843e0f8 | 6011 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 6012 | output BFD section flags have been set to something different. |
e843e0f8 L |
6013 | elf_fake_sections will set ELF section type based on BFD |
6014 | section flags. */ | |
42bb2e33 AM |
6015 | if (elf_section_type (osec) == SHT_NULL |
6016 | && (osec->flags == isec->flags || !osec->flags)) | |
6017 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
6018 | |
6019 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
6020 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
6021 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
6022 | |
6023 | /* Set things up for objcopy and relocatable link. The output | |
6024 | SHT_GROUP section will have its elf_next_in_group pointing back | |
6025 | to the input group members. Ignore linker created group section. | |
6026 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
6027 | if (need_group) |
6028 | { | |
6029 | if (elf_sec_group (isec) == NULL | |
6030 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
6031 | { | |
6032 | if (elf_section_flags (isec) & SHF_GROUP) | |
6033 | elf_section_flags (osec) |= SHF_GROUP; | |
6034 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
9659de1c | 6035 | elf_section_data (osec)->group = elf_section_data (isec)->group; |
ccd2ec6a L |
6036 | } |
6037 | } | |
6038 | ||
6039 | ihdr = &elf_section_data (isec)->this_hdr; | |
6040 | ||
6041 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
6042 | don't use the output section of the linked-to section since it | |
6043 | may be NULL at this point. */ | |
6044 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
6045 | { | |
6046 | ohdr = &elf_section_data (osec)->this_hdr; | |
6047 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
6048 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
6049 | } | |
6050 | ||
6051 | osec->use_rela_p = isec->use_rela_p; | |
6052 | ||
6053 | return TRUE; | |
6054 | } | |
6055 | ||
252b5132 RH |
6056 | /* Copy private section information. This copies over the entsize |
6057 | field, and sometimes the info field. */ | |
6058 | ||
b34976b6 | 6059 | bfd_boolean |
217aa764 AM |
6060 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6061 | asection *isec, | |
6062 | bfd *obfd, | |
6063 | asection *osec) | |
252b5132 RH |
6064 | { |
6065 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6066 | ||
6067 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6068 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6069 | return TRUE; |
252b5132 | 6070 | |
252b5132 RH |
6071 | ihdr = &elf_section_data (isec)->this_hdr; |
6072 | ohdr = &elf_section_data (osec)->this_hdr; | |
6073 | ||
6074 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6075 | ||
6076 | if (ihdr->sh_type == SHT_SYMTAB | |
6077 | || ihdr->sh_type == SHT_DYNSYM | |
6078 | || ihdr->sh_type == SHT_GNU_verneed | |
6079 | || ihdr->sh_type == SHT_GNU_verdef) | |
6080 | ohdr->sh_info = ihdr->sh_info; | |
6081 | ||
ccd2ec6a L |
6082 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6083 | NULL); | |
252b5132 RH |
6084 | } |
6085 | ||
80fccad2 BW |
6086 | /* Copy private header information. */ |
6087 | ||
6088 | bfd_boolean | |
6089 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6090 | { | |
30288845 AM |
6091 | asection *isec; |
6092 | ||
80fccad2 BW |
6093 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6094 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6095 | return TRUE; | |
6096 | ||
6097 | /* Copy over private BFD data if it has not already been copied. | |
6098 | This must be done here, rather than in the copy_private_bfd_data | |
6099 | entry point, because the latter is called after the section | |
6100 | contents have been set, which means that the program headers have | |
6101 | already been worked out. */ | |
6102 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6103 | { | |
6104 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6105 | return FALSE; | |
6106 | } | |
6107 | ||
30288845 AM |
6108 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
6109 | but this might be wrong if we deleted the group section. */ | |
6110 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
6111 | if (elf_section_type (isec) == SHT_GROUP | |
6112 | && isec->output_section == NULL) | |
6113 | { | |
6114 | asection *first = elf_next_in_group (isec); | |
6115 | asection *s = first; | |
6116 | while (s != NULL) | |
6117 | { | |
6118 | if (s->output_section != NULL) | |
6119 | { | |
6120 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6121 | elf_group_name (s->output_section) = NULL; | |
6122 | } | |
6123 | s = elf_next_in_group (s); | |
6124 | if (s == first) | |
6125 | break; | |
6126 | } | |
6127 | } | |
6128 | ||
80fccad2 BW |
6129 | return TRUE; |
6130 | } | |
6131 | ||
252b5132 RH |
6132 | /* Copy private symbol information. If this symbol is in a section |
6133 | which we did not map into a BFD section, try to map the section | |
6134 | index correctly. We use special macro definitions for the mapped | |
6135 | section indices; these definitions are interpreted by the | |
6136 | swap_out_syms function. */ | |
6137 | ||
9ad5cbcf AM |
6138 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6139 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6140 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6141 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6142 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6143 | |
b34976b6 | 6144 | bfd_boolean |
217aa764 AM |
6145 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6146 | asymbol *isymarg, | |
6147 | bfd *obfd, | |
6148 | asymbol *osymarg) | |
252b5132 RH |
6149 | { |
6150 | elf_symbol_type *isym, *osym; | |
6151 | ||
6152 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6153 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6154 | return TRUE; |
252b5132 RH |
6155 | |
6156 | isym = elf_symbol_from (ibfd, isymarg); | |
6157 | osym = elf_symbol_from (obfd, osymarg); | |
6158 | ||
6159 | if (isym != NULL | |
8424d8f5 | 6160 | && isym->internal_elf_sym.st_shndx != 0 |
252b5132 RH |
6161 | && osym != NULL |
6162 | && bfd_is_abs_section (isym->symbol.section)) | |
6163 | { | |
6164 | unsigned int shndx; | |
6165 | ||
6166 | shndx = isym->internal_elf_sym.st_shndx; | |
6167 | if (shndx == elf_onesymtab (ibfd)) | |
6168 | shndx = MAP_ONESYMTAB; | |
6169 | else if (shndx == elf_dynsymtab (ibfd)) | |
6170 | shndx = MAP_DYNSYMTAB; | |
6171 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6172 | shndx = MAP_STRTAB; | |
6173 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6174 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6175 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6176 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6177 | osym->internal_elf_sym.st_shndx = shndx; |
6178 | } | |
6179 | ||
b34976b6 | 6180 | return TRUE; |
252b5132 RH |
6181 | } |
6182 | ||
6183 | /* Swap out the symbols. */ | |
6184 | ||
b34976b6 | 6185 | static bfd_boolean |
217aa764 AM |
6186 | swap_out_syms (bfd *abfd, |
6187 | struct bfd_strtab_hash **sttp, | |
6188 | int relocatable_p) | |
252b5132 | 6189 | { |
9c5bfbb7 | 6190 | const struct elf_backend_data *bed; |
079e9a2f AM |
6191 | int symcount; |
6192 | asymbol **syms; | |
6193 | struct bfd_strtab_hash *stt; | |
6194 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6195 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6196 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6197 | bfd_byte *outbound_syms; |
6198 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6199 | int idx; |
6200 | bfd_size_type amt; | |
174fd7f9 | 6201 | bfd_boolean name_local_sections; |
252b5132 RH |
6202 | |
6203 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6204 | return FALSE; |
252b5132 | 6205 | |
c044fabd | 6206 | /* Dump out the symtabs. */ |
079e9a2f AM |
6207 | stt = _bfd_elf_stringtab_init (); |
6208 | if (stt == NULL) | |
b34976b6 | 6209 | return FALSE; |
252b5132 | 6210 | |
079e9a2f AM |
6211 | bed = get_elf_backend_data (abfd); |
6212 | symcount = bfd_get_symcount (abfd); | |
6213 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6214 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6215 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6216 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6217 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
72de5009 | 6218 | symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align; |
079e9a2f AM |
6219 | |
6220 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6221 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6222 | ||
d0fb9a8d | 6223 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6224 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6225 | { |
6226 | _bfd_stringtab_free (stt); | |
6227 | return FALSE; | |
6228 | } | |
217aa764 | 6229 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6230 | |
9ad5cbcf AM |
6231 | outbound_shndx = NULL; |
6232 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6233 | if (symtab_shndx_hdr->sh_name != 0) | |
6234 | { | |
6235 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6236 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6237 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6238 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6239 | { |
6240 | _bfd_stringtab_free (stt); | |
6241 | return FALSE; | |
6242 | } | |
6243 | ||
9ad5cbcf AM |
6244 | symtab_shndx_hdr->contents = outbound_shndx; |
6245 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6246 | symtab_shndx_hdr->sh_size = amt; | |
6247 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6248 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6249 | } | |
6250 | ||
589e6347 | 6251 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6252 | { |
6253 | /* Fill in zeroth symbol and swap it out. */ | |
6254 | Elf_Internal_Sym sym; | |
6255 | sym.st_name = 0; | |
6256 | sym.st_value = 0; | |
6257 | sym.st_size = 0; | |
6258 | sym.st_info = 0; | |
6259 | sym.st_other = 0; | |
6260 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6261 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6262 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6263 | if (outbound_shndx != NULL) |
6264 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6265 | } |
252b5132 | 6266 | |
174fd7f9 RS |
6267 | name_local_sections |
6268 | = (bed->elf_backend_name_local_section_symbols | |
6269 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6270 | ||
079e9a2f AM |
6271 | syms = bfd_get_outsymbols (abfd); |
6272 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6273 | { |
252b5132 | 6274 | Elf_Internal_Sym sym; |
079e9a2f AM |
6275 | bfd_vma value = syms[idx]->value; |
6276 | elf_symbol_type *type_ptr; | |
6277 | flagword flags = syms[idx]->flags; | |
6278 | int type; | |
252b5132 | 6279 | |
174fd7f9 RS |
6280 | if (!name_local_sections |
6281 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6282 | { |
6283 | /* Local section symbols have no name. */ | |
6284 | sym.st_name = 0; | |
6285 | } | |
6286 | else | |
6287 | { | |
6288 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6289 | syms[idx]->name, | |
b34976b6 | 6290 | TRUE, FALSE); |
079e9a2f | 6291 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6292 | { |
6293 | _bfd_stringtab_free (stt); | |
6294 | return FALSE; | |
6295 | } | |
079e9a2f | 6296 | } |
252b5132 | 6297 | |
079e9a2f | 6298 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6299 | |
079e9a2f AM |
6300 | if ((flags & BSF_SECTION_SYM) == 0 |
6301 | && bfd_is_com_section (syms[idx]->section)) | |
6302 | { | |
6303 | /* ELF common symbols put the alignment into the `value' field, | |
6304 | and the size into the `size' field. This is backwards from | |
6305 | how BFD handles it, so reverse it here. */ | |
6306 | sym.st_size = value; | |
6307 | if (type_ptr == NULL | |
6308 | || type_ptr->internal_elf_sym.st_value == 0) | |
6309 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6310 | else | |
6311 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6312 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6313 | (abfd, syms[idx]->section); | |
6314 | } | |
6315 | else | |
6316 | { | |
6317 | asection *sec = syms[idx]->section; | |
cb33740c | 6318 | unsigned int shndx; |
252b5132 | 6319 | |
079e9a2f AM |
6320 | if (sec->output_section) |
6321 | { | |
6322 | value += sec->output_offset; | |
6323 | sec = sec->output_section; | |
6324 | } | |
589e6347 | 6325 | |
079e9a2f AM |
6326 | /* Don't add in the section vma for relocatable output. */ |
6327 | if (! relocatable_p) | |
6328 | value += sec->vma; | |
6329 | sym.st_value = value; | |
6330 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6331 | ||
6332 | if (bfd_is_abs_section (sec) | |
6333 | && type_ptr != NULL | |
6334 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6335 | { | |
6336 | /* This symbol is in a real ELF section which we did | |
6337 | not create as a BFD section. Undo the mapping done | |
6338 | by copy_private_symbol_data. */ | |
6339 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6340 | switch (shndx) | |
6341 | { | |
6342 | case MAP_ONESYMTAB: | |
6343 | shndx = elf_onesymtab (abfd); | |
6344 | break; | |
6345 | case MAP_DYNSYMTAB: | |
6346 | shndx = elf_dynsymtab (abfd); | |
6347 | break; | |
6348 | case MAP_STRTAB: | |
6349 | shndx = elf_tdata (abfd)->strtab_section; | |
6350 | break; | |
6351 | case MAP_SHSTRTAB: | |
6352 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6353 | break; | |
9ad5cbcf AM |
6354 | case MAP_SYM_SHNDX: |
6355 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6356 | break; | |
079e9a2f AM |
6357 | default: |
6358 | break; | |
6359 | } | |
6360 | } | |
6361 | else | |
6362 | { | |
6363 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6364 | |
cb33740c | 6365 | if (shndx == SHN_BAD) |
079e9a2f AM |
6366 | { |
6367 | asection *sec2; | |
6368 | ||
6369 | /* Writing this would be a hell of a lot easier if | |
6370 | we had some decent documentation on bfd, and | |
6371 | knew what to expect of the library, and what to | |
6372 | demand of applications. For example, it | |
6373 | appears that `objcopy' might not set the | |
6374 | section of a symbol to be a section that is | |
6375 | actually in the output file. */ | |
6376 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6377 | if (sec2 == NULL) |
6378 | { | |
6379 | _bfd_error_handler (_("\ | |
6380 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6381 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6382 | sec->name); | |
811072d8 | 6383 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6384 | _bfd_stringtab_free (stt); |
589e6347 NC |
6385 | return FALSE; |
6386 | } | |
811072d8 | 6387 | |
079e9a2f | 6388 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
cb33740c | 6389 | BFD_ASSERT (shndx != SHN_BAD); |
079e9a2f AM |
6390 | } |
6391 | } | |
252b5132 | 6392 | |
079e9a2f AM |
6393 | sym.st_shndx = shndx; |
6394 | } | |
252b5132 | 6395 | |
13ae64f3 JJ |
6396 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6397 | type = STT_TLS; | |
d8045f23 NC |
6398 | else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0) |
6399 | type = STT_GNU_IFUNC; | |
13ae64f3 | 6400 | else if ((flags & BSF_FUNCTION) != 0) |
079e9a2f AM |
6401 | type = STT_FUNC; |
6402 | else if ((flags & BSF_OBJECT) != 0) | |
6403 | type = STT_OBJECT; | |
d9352518 DB |
6404 | else if ((flags & BSF_RELC) != 0) |
6405 | type = STT_RELC; | |
6406 | else if ((flags & BSF_SRELC) != 0) | |
6407 | type = STT_SRELC; | |
079e9a2f AM |
6408 | else |
6409 | type = STT_NOTYPE; | |
252b5132 | 6410 | |
13ae64f3 JJ |
6411 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6412 | type = STT_TLS; | |
6413 | ||
589e6347 | 6414 | /* Processor-specific types. */ |
079e9a2f AM |
6415 | if (type_ptr != NULL |
6416 | && bed->elf_backend_get_symbol_type) | |
6417 | type = ((*bed->elf_backend_get_symbol_type) | |
6418 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6419 | |
079e9a2f AM |
6420 | if (flags & BSF_SECTION_SYM) |
6421 | { | |
6422 | if (flags & BSF_GLOBAL) | |
6423 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6424 | else | |
6425 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6426 | } | |
6427 | else if (bfd_is_com_section (syms[idx]->section)) | |
0a40daed | 6428 | { |
504b7d20 | 6429 | #ifdef USE_STT_COMMON |
0a40daed MK |
6430 | if (type == STT_OBJECT) |
6431 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON); | |
6432 | else | |
504b7d20 | 6433 | #endif |
c91e322a | 6434 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); |
0a40daed | 6435 | } |
079e9a2f AM |
6436 | else if (bfd_is_und_section (syms[idx]->section)) |
6437 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6438 | ? STB_WEAK | |
6439 | : STB_GLOBAL), | |
6440 | type); | |
6441 | else if (flags & BSF_FILE) | |
6442 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6443 | else | |
6444 | { | |
6445 | int bind = STB_LOCAL; | |
252b5132 | 6446 | |
079e9a2f AM |
6447 | if (flags & BSF_LOCAL) |
6448 | bind = STB_LOCAL; | |
3e7a7d11 NC |
6449 | else if (flags & BSF_GNU_UNIQUE) |
6450 | bind = STB_GNU_UNIQUE; | |
079e9a2f AM |
6451 | else if (flags & BSF_WEAK) |
6452 | bind = STB_WEAK; | |
6453 | else if (flags & BSF_GLOBAL) | |
6454 | bind = STB_GLOBAL; | |
252b5132 | 6455 | |
079e9a2f AM |
6456 | sym.st_info = ELF_ST_INFO (bind, type); |
6457 | } | |
252b5132 | 6458 | |
079e9a2f AM |
6459 | if (type_ptr != NULL) |
6460 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6461 | else | |
6462 | sym.st_other = 0; | |
252b5132 | 6463 | |
9ad5cbcf | 6464 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6465 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6466 | if (outbound_shndx != NULL) |
6467 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6468 | } |
252b5132 | 6469 | |
079e9a2f AM |
6470 | *sttp = stt; |
6471 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6472 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6473 | |
079e9a2f AM |
6474 | symstrtab_hdr->sh_flags = 0; |
6475 | symstrtab_hdr->sh_addr = 0; | |
6476 | symstrtab_hdr->sh_entsize = 0; | |
6477 | symstrtab_hdr->sh_link = 0; | |
6478 | symstrtab_hdr->sh_info = 0; | |
6479 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6480 | |
b34976b6 | 6481 | return TRUE; |
252b5132 RH |
6482 | } |
6483 | ||
6484 | /* Return the number of bytes required to hold the symtab vector. | |
6485 | ||
6486 | Note that we base it on the count plus 1, since we will null terminate | |
6487 | the vector allocated based on this size. However, the ELF symbol table | |
6488 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6489 | ||
6490 | long | |
217aa764 | 6491 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6492 | { |
6493 | long symcount; | |
6494 | long symtab_size; | |
6495 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6496 | ||
6497 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6498 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6499 | if (symcount > 0) | |
6500 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6501 | |
6502 | return symtab_size; | |
6503 | } | |
6504 | ||
6505 | long | |
217aa764 | 6506 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6507 | { |
6508 | long symcount; | |
6509 | long symtab_size; | |
6510 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6511 | ||
6512 | if (elf_dynsymtab (abfd) == 0) | |
6513 | { | |
6514 | bfd_set_error (bfd_error_invalid_operation); | |
6515 | return -1; | |
6516 | } | |
6517 | ||
6518 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6519 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6520 | if (symcount > 0) | |
6521 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6522 | |
6523 | return symtab_size; | |
6524 | } | |
6525 | ||
6526 | long | |
217aa764 AM |
6527 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6528 | sec_ptr asect) | |
252b5132 RH |
6529 | { |
6530 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6531 | } | |
6532 | ||
6533 | /* Canonicalize the relocs. */ | |
6534 | ||
6535 | long | |
217aa764 AM |
6536 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6537 | sec_ptr section, | |
6538 | arelent **relptr, | |
6539 | asymbol **symbols) | |
252b5132 RH |
6540 | { |
6541 | arelent *tblptr; | |
6542 | unsigned int i; | |
9c5bfbb7 | 6543 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6544 | |
b34976b6 | 6545 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6546 | return -1; |
6547 | ||
6548 | tblptr = section->relocation; | |
6549 | for (i = 0; i < section->reloc_count; i++) | |
6550 | *relptr++ = tblptr++; | |
6551 | ||
6552 | *relptr = NULL; | |
6553 | ||
6554 | return section->reloc_count; | |
6555 | } | |
6556 | ||
6557 | long | |
6cee3f79 | 6558 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6559 | { |
9c5bfbb7 | 6560 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6561 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6562 | |
6563 | if (symcount >= 0) | |
6564 | bfd_get_symcount (abfd) = symcount; | |
6565 | return symcount; | |
6566 | } | |
6567 | ||
6568 | long | |
217aa764 AM |
6569 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6570 | asymbol **allocation) | |
252b5132 | 6571 | { |
9c5bfbb7 | 6572 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6573 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6574 | |
6575 | if (symcount >= 0) | |
6576 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6577 | return symcount; | |
252b5132 RH |
6578 | } |
6579 | ||
8615f3f2 AM |
6580 | /* Return the size required for the dynamic reloc entries. Any loadable |
6581 | section that was actually installed in the BFD, and has type SHT_REL | |
6582 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6583 | dynamic reloc section. */ | |
252b5132 RH |
6584 | |
6585 | long | |
217aa764 | 6586 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6587 | { |
6588 | long ret; | |
6589 | asection *s; | |
6590 | ||
6591 | if (elf_dynsymtab (abfd) == 0) | |
6592 | { | |
6593 | bfd_set_error (bfd_error_invalid_operation); | |
6594 | return -1; | |
6595 | } | |
6596 | ||
6597 | ret = sizeof (arelent *); | |
6598 | for (s = abfd->sections; s != NULL; s = s->next) | |
266b05cf | 6599 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6600 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6601 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6602 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6603 | * sizeof (arelent *)); |
6604 | ||
6605 | return ret; | |
6606 | } | |
6607 | ||
8615f3f2 AM |
6608 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6609 | dynamic relocations as a single block, although they are actually | |
6610 | associated with particular sections; the interface, which was | |
6611 | designed for SunOS style shared libraries, expects that there is only | |
6612 | one set of dynamic relocs. Any loadable section that was actually | |
6613 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6614 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6615 | |
6616 | long | |
217aa764 AM |
6617 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6618 | arelent **storage, | |
6619 | asymbol **syms) | |
252b5132 | 6620 | { |
217aa764 | 6621 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6622 | asection *s; |
6623 | long ret; | |
6624 | ||
6625 | if (elf_dynsymtab (abfd) == 0) | |
6626 | { | |
6627 | bfd_set_error (bfd_error_invalid_operation); | |
6628 | return -1; | |
6629 | } | |
6630 | ||
6631 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6632 | ret = 0; | |
6633 | for (s = abfd->sections; s != NULL; s = s->next) | |
6634 | { | |
266b05cf | 6635 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
252b5132 RH |
6636 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6637 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6638 | { | |
6639 | arelent *p; | |
6640 | long count, i; | |
6641 | ||
b34976b6 | 6642 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6643 | return -1; |
eea6121a | 6644 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6645 | p = s->relocation; |
6646 | for (i = 0; i < count; i++) | |
6647 | *storage++ = p++; | |
6648 | ret += count; | |
6649 | } | |
6650 | } | |
6651 | ||
6652 | *storage = NULL; | |
6653 | ||
6654 | return ret; | |
6655 | } | |
6656 | \f | |
6657 | /* Read in the version information. */ | |
6658 | ||
b34976b6 | 6659 | bfd_boolean |
fc0e6df6 | 6660 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6661 | { |
6662 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6663 | unsigned int freeidx = 0; |
6664 | ||
6665 | if (elf_dynverref (abfd) != 0) | |
6666 | { | |
6667 | Elf_Internal_Shdr *hdr; | |
6668 | Elf_External_Verneed *everneed; | |
6669 | Elf_Internal_Verneed *iverneed; | |
6670 | unsigned int i; | |
d0fb9a8d | 6671 | bfd_byte *contents_end; |
fc0e6df6 PB |
6672 | |
6673 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6674 | ||
d0fb9a8d JJ |
6675 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6676 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6677 | if (elf_tdata (abfd)->verref == NULL) |
6678 | goto error_return; | |
6679 | ||
6680 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6681 | ||
6682 | contents = bfd_malloc (hdr->sh_size); | |
6683 | if (contents == NULL) | |
d0fb9a8d JJ |
6684 | { |
6685 | error_return_verref: | |
6686 | elf_tdata (abfd)->verref = NULL; | |
6687 | elf_tdata (abfd)->cverrefs = 0; | |
6688 | goto error_return; | |
6689 | } | |
fc0e6df6 PB |
6690 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6691 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6692 | goto error_return_verref; |
fc0e6df6 | 6693 | |
d0fb9a8d JJ |
6694 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6695 | goto error_return_verref; | |
6696 | ||
6697 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6698 | == sizeof (Elf_External_Vernaux)); | |
6699 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6700 | everneed = (Elf_External_Verneed *) contents; |
6701 | iverneed = elf_tdata (abfd)->verref; | |
6702 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6703 | { | |
6704 | Elf_External_Vernaux *evernaux; | |
6705 | Elf_Internal_Vernaux *ivernaux; | |
6706 | unsigned int j; | |
6707 | ||
6708 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6709 | ||
6710 | iverneed->vn_bfd = abfd; | |
6711 | ||
6712 | iverneed->vn_filename = | |
6713 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6714 | iverneed->vn_file); | |
6715 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6716 | goto error_return_verref; |
fc0e6df6 | 6717 | |
d0fb9a8d JJ |
6718 | if (iverneed->vn_cnt == 0) |
6719 | iverneed->vn_auxptr = NULL; | |
6720 | else | |
6721 | { | |
6722 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6723 | sizeof (Elf_Internal_Vernaux)); | |
6724 | if (iverneed->vn_auxptr == NULL) | |
6725 | goto error_return_verref; | |
6726 | } | |
6727 | ||
6728 | if (iverneed->vn_aux | |
6729 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6730 | goto error_return_verref; | |
fc0e6df6 PB |
6731 | |
6732 | evernaux = ((Elf_External_Vernaux *) | |
6733 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6734 | ivernaux = iverneed->vn_auxptr; | |
6735 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6736 | { | |
6737 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6738 | ||
6739 | ivernaux->vna_nodename = | |
6740 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6741 | ivernaux->vna_name); | |
6742 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6743 | goto error_return_verref; |
fc0e6df6 PB |
6744 | |
6745 | if (j + 1 < iverneed->vn_cnt) | |
6746 | ivernaux->vna_nextptr = ivernaux + 1; | |
6747 | else | |
6748 | ivernaux->vna_nextptr = NULL; | |
6749 | ||
d0fb9a8d JJ |
6750 | if (ivernaux->vna_next |
6751 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6752 | goto error_return_verref; | |
6753 | ||
fc0e6df6 PB |
6754 | evernaux = ((Elf_External_Vernaux *) |
6755 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6756 | ||
6757 | if (ivernaux->vna_other > freeidx) | |
6758 | freeidx = ivernaux->vna_other; | |
6759 | } | |
6760 | ||
6761 | if (i + 1 < hdr->sh_info) | |
6762 | iverneed->vn_nextref = iverneed + 1; | |
6763 | else | |
6764 | iverneed->vn_nextref = NULL; | |
6765 | ||
d0fb9a8d JJ |
6766 | if (iverneed->vn_next |
6767 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6768 | goto error_return_verref; | |
6769 | ||
fc0e6df6 PB |
6770 | everneed = ((Elf_External_Verneed *) |
6771 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6772 | } | |
6773 | ||
6774 | free (contents); | |
6775 | contents = NULL; | |
6776 | } | |
252b5132 RH |
6777 | |
6778 | if (elf_dynverdef (abfd) != 0) | |
6779 | { | |
6780 | Elf_Internal_Shdr *hdr; | |
6781 | Elf_External_Verdef *everdef; | |
6782 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6783 | Elf_Internal_Verdef *iverdefarr; |
6784 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6785 | unsigned int i; |
062e2358 | 6786 | unsigned int maxidx; |
d0fb9a8d | 6787 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6788 | |
6789 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6790 | ||
217aa764 | 6791 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6792 | if (contents == NULL) |
6793 | goto error_return; | |
6794 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6795 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6796 | goto error_return; |
6797 | ||
d0fb9a8d JJ |
6798 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6799 | goto error_return; | |
6800 | ||
6801 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6802 | >= sizeof (Elf_External_Verdaux)); | |
6803 | contents_end_def = contents + hdr->sh_size | |
6804 | - sizeof (Elf_External_Verdef); | |
6805 | contents_end_aux = contents + hdr->sh_size | |
6806 | - sizeof (Elf_External_Verdaux); | |
6807 | ||
f631889e UD |
6808 | /* We know the number of entries in the section but not the maximum |
6809 | index. Therefore we have to run through all entries and find | |
6810 | the maximum. */ | |
252b5132 | 6811 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6812 | maxidx = 0; |
6813 | for (i = 0; i < hdr->sh_info; ++i) | |
6814 | { | |
6815 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6816 | ||
062e2358 AM |
6817 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6818 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6819 | |
d0fb9a8d JJ |
6820 | if (iverdefmem.vd_next |
6821 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6822 | goto error_return; | |
6823 | ||
f631889e UD |
6824 | everdef = ((Elf_External_Verdef *) |
6825 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6826 | } | |
6827 | ||
fc0e6df6 PB |
6828 | if (default_imported_symver) |
6829 | { | |
6830 | if (freeidx > maxidx) | |
6831 | maxidx = ++freeidx; | |
6832 | else | |
6833 | freeidx = ++maxidx; | |
6834 | } | |
d0fb9a8d JJ |
6835 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6836 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6837 | if (elf_tdata (abfd)->verdef == NULL) |
6838 | goto error_return; | |
6839 | ||
6840 | elf_tdata (abfd)->cverdefs = maxidx; | |
6841 | ||
6842 | everdef = (Elf_External_Verdef *) contents; | |
6843 | iverdefarr = elf_tdata (abfd)->verdef; | |
6844 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6845 | { |
6846 | Elf_External_Verdaux *everdaux; | |
6847 | Elf_Internal_Verdaux *iverdaux; | |
6848 | unsigned int j; | |
6849 | ||
f631889e UD |
6850 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6851 | ||
d0fb9a8d JJ |
6852 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6853 | { | |
6854 | error_return_verdef: | |
6855 | elf_tdata (abfd)->verdef = NULL; | |
6856 | elf_tdata (abfd)->cverdefs = 0; | |
6857 | goto error_return; | |
6858 | } | |
6859 | ||
f631889e UD |
6860 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6861 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6862 | |
6863 | iverdef->vd_bfd = abfd; | |
6864 | ||
d0fb9a8d JJ |
6865 | if (iverdef->vd_cnt == 0) |
6866 | iverdef->vd_auxptr = NULL; | |
6867 | else | |
6868 | { | |
6869 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6870 | sizeof (Elf_Internal_Verdaux)); | |
6871 | if (iverdef->vd_auxptr == NULL) | |
6872 | goto error_return_verdef; | |
6873 | } | |
6874 | ||
6875 | if (iverdef->vd_aux | |
6876 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6877 | goto error_return_verdef; | |
252b5132 RH |
6878 | |
6879 | everdaux = ((Elf_External_Verdaux *) | |
6880 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6881 | iverdaux = iverdef->vd_auxptr; | |
6882 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6883 | { | |
6884 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6885 | ||
6886 | iverdaux->vda_nodename = | |
6887 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6888 | iverdaux->vda_name); | |
6889 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6890 | goto error_return_verdef; |
252b5132 RH |
6891 | |
6892 | if (j + 1 < iverdef->vd_cnt) | |
6893 | iverdaux->vda_nextptr = iverdaux + 1; | |
6894 | else | |
6895 | iverdaux->vda_nextptr = NULL; | |
6896 | ||
d0fb9a8d JJ |
6897 | if (iverdaux->vda_next |
6898 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6899 | goto error_return_verdef; | |
6900 | ||
252b5132 RH |
6901 | everdaux = ((Elf_External_Verdaux *) |
6902 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6903 | } | |
6904 | ||
d0fb9a8d JJ |
6905 | if (iverdef->vd_cnt) |
6906 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6907 | |
d0fb9a8d | 6908 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6909 | iverdef->vd_nextdef = iverdef + 1; |
6910 | else | |
6911 | iverdef->vd_nextdef = NULL; | |
6912 | ||
6913 | everdef = ((Elf_External_Verdef *) | |
6914 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6915 | } | |
6916 | ||
6917 | free (contents); | |
6918 | contents = NULL; | |
6919 | } | |
fc0e6df6 | 6920 | else if (default_imported_symver) |
252b5132 | 6921 | { |
fc0e6df6 PB |
6922 | if (freeidx < 3) |
6923 | freeidx = 3; | |
6924 | else | |
6925 | freeidx++; | |
252b5132 | 6926 | |
d0fb9a8d JJ |
6927 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6928 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6929 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6930 | goto error_return; |
6931 | ||
fc0e6df6 PB |
6932 | elf_tdata (abfd)->cverdefs = freeidx; |
6933 | } | |
252b5132 | 6934 | |
fc0e6df6 PB |
6935 | /* Create a default version based on the soname. */ |
6936 | if (default_imported_symver) | |
6937 | { | |
6938 | Elf_Internal_Verdef *iverdef; | |
6939 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6940 | |
fc0e6df6 | 6941 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6942 | |
fc0e6df6 PB |
6943 | iverdef->vd_version = VER_DEF_CURRENT; |
6944 | iverdef->vd_flags = 0; | |
6945 | iverdef->vd_ndx = freeidx; | |
6946 | iverdef->vd_cnt = 1; | |
252b5132 | 6947 | |
fc0e6df6 | 6948 | iverdef->vd_bfd = abfd; |
252b5132 | 6949 | |
fc0e6df6 PB |
6950 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6951 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6952 | goto error_return_verdef; |
fc0e6df6 | 6953 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6954 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6955 | if (iverdef->vd_auxptr == NULL) | |
6956 | goto error_return_verdef; | |
252b5132 | 6957 | |
fc0e6df6 PB |
6958 | iverdaux = iverdef->vd_auxptr; |
6959 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6960 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6961 | } |
6962 | ||
b34976b6 | 6963 | return TRUE; |
252b5132 RH |
6964 | |
6965 | error_return: | |
5ed6aba4 | 6966 | if (contents != NULL) |
252b5132 | 6967 | free (contents); |
b34976b6 | 6968 | return FALSE; |
252b5132 RH |
6969 | } |
6970 | \f | |
6971 | asymbol * | |
217aa764 | 6972 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6973 | { |
6974 | elf_symbol_type *newsym; | |
dc810e39 | 6975 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6976 | |
217aa764 | 6977 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6978 | if (!newsym) |
6979 | return NULL; | |
6980 | else | |
6981 | { | |
6982 | newsym->symbol.the_bfd = abfd; | |
6983 | return &newsym->symbol; | |
6984 | } | |
6985 | } | |
6986 | ||
6987 | void | |
217aa764 AM |
6988 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6989 | asymbol *symbol, | |
6990 | symbol_info *ret) | |
252b5132 RH |
6991 | { |
6992 | bfd_symbol_info (symbol, ret); | |
6993 | } | |
6994 | ||
6995 | /* Return whether a symbol name implies a local symbol. Most targets | |
6996 | use this function for the is_local_label_name entry point, but some | |
6997 | override it. */ | |
6998 | ||
b34976b6 | 6999 | bfd_boolean |
217aa764 AM |
7000 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
7001 | const char *name) | |
252b5132 RH |
7002 | { |
7003 | /* Normal local symbols start with ``.L''. */ | |
7004 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 7005 | return TRUE; |
252b5132 RH |
7006 | |
7007 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
7008 | DWARF debugging symbols starting with ``..''. */ | |
7009 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 7010 | return TRUE; |
252b5132 RH |
7011 | |
7012 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
7013 | emitting DWARF debugging output. I suspect this is actually a | |
7014 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
7015 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
7016 | underscore to be emitted on some ELF targets). For ease of use, | |
7017 | we treat such symbols as local. */ | |
7018 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 7019 | return TRUE; |
252b5132 | 7020 | |
b34976b6 | 7021 | return FALSE; |
252b5132 RH |
7022 | } |
7023 | ||
7024 | alent * | |
217aa764 AM |
7025 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
7026 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
7027 | { |
7028 | abort (); | |
7029 | return NULL; | |
7030 | } | |
7031 | ||
b34976b6 | 7032 | bfd_boolean |
217aa764 AM |
7033 | _bfd_elf_set_arch_mach (bfd *abfd, |
7034 | enum bfd_architecture arch, | |
7035 | unsigned long machine) | |
252b5132 RH |
7036 | { |
7037 | /* If this isn't the right architecture for this backend, and this | |
7038 | isn't the generic backend, fail. */ | |
7039 | if (arch != get_elf_backend_data (abfd)->arch | |
7040 | && arch != bfd_arch_unknown | |
7041 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 7042 | return FALSE; |
252b5132 RH |
7043 | |
7044 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
7045 | } | |
7046 | ||
d1fad7c6 NC |
7047 | /* Find the function to a particular section and offset, |
7048 | for error reporting. */ | |
252b5132 | 7049 | |
b34976b6 | 7050 | static bfd_boolean |
b9d678e0 | 7051 | elf_find_function (bfd *abfd, |
217aa764 AM |
7052 | asection *section, |
7053 | asymbol **symbols, | |
7054 | bfd_vma offset, | |
7055 | const char **filename_ptr, | |
7056 | const char **functionname_ptr) | |
252b5132 | 7057 | { |
252b5132 | 7058 | const char *filename; |
57426232 | 7059 | asymbol *func, *file; |
252b5132 RH |
7060 | bfd_vma low_func; |
7061 | asymbol **p; | |
57426232 JB |
7062 | /* ??? Given multiple file symbols, it is impossible to reliably |
7063 | choose the right file name for global symbols. File symbols are | |
7064 | local symbols, and thus all file symbols must sort before any | |
7065 | global symbols. The ELF spec may be interpreted to say that a | |
7066 | file symbol must sort before other local symbols, but currently | |
7067 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
7068 | make a better choice of file name for local symbols by ignoring | |
7069 | file symbols appearing after a given local symbol. */ | |
7070 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
b9d678e0 | 7071 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 7072 | |
252b5132 RH |
7073 | filename = NULL; |
7074 | func = NULL; | |
57426232 | 7075 | file = NULL; |
252b5132 | 7076 | low_func = 0; |
57426232 | 7077 | state = nothing_seen; |
252b5132 RH |
7078 | |
7079 | for (p = symbols; *p != NULL; p++) | |
7080 | { | |
7081 | elf_symbol_type *q; | |
b9d678e0 | 7082 | unsigned int type; |
252b5132 RH |
7083 | |
7084 | q = (elf_symbol_type *) *p; | |
7085 | ||
b9d678e0 L |
7086 | type = ELF_ST_TYPE (q->internal_elf_sym.st_info); |
7087 | switch (type) | |
252b5132 | 7088 | { |
252b5132 | 7089 | case STT_FILE: |
57426232 JB |
7090 | file = &q->symbol; |
7091 | if (state == symbol_seen) | |
7092 | state = file_after_symbol_seen; | |
7093 | continue; | |
b9d678e0 L |
7094 | default: |
7095 | if (!bed->is_function_type (type)) | |
7096 | break; | |
252b5132 | 7097 | case STT_NOTYPE: |
6b40fcba | 7098 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7099 | && q->symbol.value >= low_func |
7100 | && q->symbol.value <= offset) | |
7101 | { | |
7102 | func = (asymbol *) q; | |
7103 | low_func = q->symbol.value; | |
a1923858 AM |
7104 | filename = NULL; |
7105 | if (file != NULL | |
7106 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7107 | || state != file_after_symbol_seen)) | |
57426232 | 7108 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7109 | } |
7110 | break; | |
7111 | } | |
57426232 JB |
7112 | if (state == nothing_seen) |
7113 | state = symbol_seen; | |
252b5132 RH |
7114 | } |
7115 | ||
7116 | if (func == NULL) | |
b34976b6 | 7117 | return FALSE; |
252b5132 | 7118 | |
d1fad7c6 NC |
7119 | if (filename_ptr) |
7120 | *filename_ptr = filename; | |
7121 | if (functionname_ptr) | |
7122 | *functionname_ptr = bfd_asymbol_name (func); | |
7123 | ||
b34976b6 | 7124 | return TRUE; |
d1fad7c6 NC |
7125 | } |
7126 | ||
7127 | /* Find the nearest line to a particular section and offset, | |
7128 | for error reporting. */ | |
7129 | ||
b34976b6 | 7130 | bfd_boolean |
217aa764 AM |
7131 | _bfd_elf_find_nearest_line (bfd *abfd, |
7132 | asection *section, | |
7133 | asymbol **symbols, | |
7134 | bfd_vma offset, | |
7135 | const char **filename_ptr, | |
7136 | const char **functionname_ptr, | |
7137 | unsigned int *line_ptr) | |
d1fad7c6 | 7138 | { |
b34976b6 | 7139 | bfd_boolean found; |
d1fad7c6 NC |
7140 | |
7141 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7142 | filename_ptr, functionname_ptr, |
7143 | line_ptr)) | |
d1fad7c6 NC |
7144 | { |
7145 | if (!*functionname_ptr) | |
4e8a9624 AM |
7146 | elf_find_function (abfd, section, symbols, offset, |
7147 | *filename_ptr ? NULL : filename_ptr, | |
7148 | functionname_ptr); | |
7149 | ||
b34976b6 | 7150 | return TRUE; |
d1fad7c6 NC |
7151 | } |
7152 | ||
7153 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7154 | filename_ptr, functionname_ptr, |
7155 | line_ptr, 0, | |
7156 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7157 | { |
7158 | if (!*functionname_ptr) | |
4e8a9624 AM |
7159 | elf_find_function (abfd, section, symbols, offset, |
7160 | *filename_ptr ? NULL : filename_ptr, | |
7161 | functionname_ptr); | |
7162 | ||
b34976b6 | 7163 | return TRUE; |
d1fad7c6 NC |
7164 | } |
7165 | ||
7166 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7167 | &found, filename_ptr, |
7168 | functionname_ptr, line_ptr, | |
7169 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7170 | return FALSE; |
dc43ada5 | 7171 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7172 | return TRUE; |
d1fad7c6 NC |
7173 | |
7174 | if (symbols == NULL) | |
b34976b6 | 7175 | return FALSE; |
d1fad7c6 NC |
7176 | |
7177 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7178 | filename_ptr, functionname_ptr)) |
b34976b6 | 7179 | return FALSE; |
d1fad7c6 | 7180 | |
252b5132 | 7181 | *line_ptr = 0; |
b34976b6 | 7182 | return TRUE; |
252b5132 RH |
7183 | } |
7184 | ||
5420f73d L |
7185 | /* Find the line for a symbol. */ |
7186 | ||
7187 | bfd_boolean | |
7188 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7189 | const char **filename_ptr, unsigned int *line_ptr) | |
7190 | { | |
7191 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7192 | filename_ptr, line_ptr, 0, | |
7193 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7194 | } | |
7195 | ||
4ab527b0 FF |
7196 | /* After a call to bfd_find_nearest_line, successive calls to |
7197 | bfd_find_inliner_info can be used to get source information about | |
7198 | each level of function inlining that terminated at the address | |
7199 | passed to bfd_find_nearest_line. Currently this is only supported | |
7200 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7201 | ||
7202 | bfd_boolean | |
7203 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7204 | const char **filename_ptr, | |
7205 | const char **functionname_ptr, | |
7206 | unsigned int *line_ptr) | |
7207 | { | |
7208 | bfd_boolean found; | |
7209 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7210 | functionname_ptr, line_ptr, | |
7211 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7212 | return found; | |
7213 | } | |
7214 | ||
252b5132 | 7215 | int |
a6b96beb | 7216 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7217 | { |
8ded5a0f AM |
7218 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7219 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7220 | |
a6b96beb | 7221 | if (!info->relocatable) |
8ded5a0f | 7222 | { |
62d7a5f6 | 7223 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7224 | |
62d7a5f6 AM |
7225 | if (phdr_size == (bfd_size_type) -1) |
7226 | { | |
7227 | struct elf_segment_map *m; | |
7228 | ||
7229 | phdr_size = 0; | |
7230 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7231 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7232 | |
62d7a5f6 AM |
7233 | if (phdr_size == 0) |
7234 | phdr_size = get_program_header_size (abfd, info); | |
7235 | } | |
8ded5a0f AM |
7236 | |
7237 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7238 | ret += phdr_size; | |
7239 | } | |
7240 | ||
252b5132 RH |
7241 | return ret; |
7242 | } | |
7243 | ||
b34976b6 | 7244 | bfd_boolean |
217aa764 AM |
7245 | _bfd_elf_set_section_contents (bfd *abfd, |
7246 | sec_ptr section, | |
0f867abe | 7247 | const void *location, |
217aa764 AM |
7248 | file_ptr offset, |
7249 | bfd_size_type count) | |
252b5132 RH |
7250 | { |
7251 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7252 | bfd_signed_vma pos; |
252b5132 RH |
7253 | |
7254 | if (! abfd->output_has_begun | |
217aa764 | 7255 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7256 | return FALSE; |
252b5132 RH |
7257 | |
7258 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7259 | pos = hdr->sh_offset + offset; |
7260 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7261 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7262 | return FALSE; |
252b5132 | 7263 | |
b34976b6 | 7264 | return TRUE; |
252b5132 RH |
7265 | } |
7266 | ||
7267 | void | |
217aa764 AM |
7268 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7269 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7270 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7271 | { |
7272 | abort (); | |
7273 | } | |
7274 | ||
252b5132 RH |
7275 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7276 | ||
b34976b6 | 7277 | bfd_boolean |
217aa764 | 7278 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7279 | { |
c044fabd | 7280 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7281 | |
7282 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7283 | { | |
7284 | bfd_reloc_code_real_type code; | |
7285 | reloc_howto_type *howto; | |
7286 | ||
7287 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7288 | equivalent ELF reloc. */ |
252b5132 RH |
7289 | |
7290 | if (areloc->howto->pc_relative) | |
7291 | { | |
7292 | switch (areloc->howto->bitsize) | |
7293 | { | |
7294 | case 8: | |
7295 | code = BFD_RELOC_8_PCREL; | |
7296 | break; | |
7297 | case 12: | |
7298 | code = BFD_RELOC_12_PCREL; | |
7299 | break; | |
7300 | case 16: | |
7301 | code = BFD_RELOC_16_PCREL; | |
7302 | break; | |
7303 | case 24: | |
7304 | code = BFD_RELOC_24_PCREL; | |
7305 | break; | |
7306 | case 32: | |
7307 | code = BFD_RELOC_32_PCREL; | |
7308 | break; | |
7309 | case 64: | |
7310 | code = BFD_RELOC_64_PCREL; | |
7311 | break; | |
7312 | default: | |
7313 | goto fail; | |
7314 | } | |
7315 | ||
7316 | howto = bfd_reloc_type_lookup (abfd, code); | |
7317 | ||
7318 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7319 | { | |
7320 | if (howto->pcrel_offset) | |
7321 | areloc->addend += areloc->address; | |
7322 | else | |
7323 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7324 | } | |
7325 | } | |
7326 | else | |
7327 | { | |
7328 | switch (areloc->howto->bitsize) | |
7329 | { | |
7330 | case 8: | |
7331 | code = BFD_RELOC_8; | |
7332 | break; | |
7333 | case 14: | |
7334 | code = BFD_RELOC_14; | |
7335 | break; | |
7336 | case 16: | |
7337 | code = BFD_RELOC_16; | |
7338 | break; | |
7339 | case 26: | |
7340 | code = BFD_RELOC_26; | |
7341 | break; | |
7342 | case 32: | |
7343 | code = BFD_RELOC_32; | |
7344 | break; | |
7345 | case 64: | |
7346 | code = BFD_RELOC_64; | |
7347 | break; | |
7348 | default: | |
7349 | goto fail; | |
7350 | } | |
7351 | ||
7352 | howto = bfd_reloc_type_lookup (abfd, code); | |
7353 | } | |
7354 | ||
7355 | if (howto) | |
7356 | areloc->howto = howto; | |
7357 | else | |
7358 | goto fail; | |
7359 | } | |
7360 | ||
b34976b6 | 7361 | return TRUE; |
252b5132 RH |
7362 | |
7363 | fail: | |
7364 | (*_bfd_error_handler) | |
d003868e AM |
7365 | (_("%B: unsupported relocation type %s"), |
7366 | abfd, areloc->howto->name); | |
252b5132 | 7367 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7368 | return FALSE; |
252b5132 RH |
7369 | } |
7370 | ||
b34976b6 | 7371 | bfd_boolean |
217aa764 | 7372 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7373 | { |
7374 | if (bfd_get_format (abfd) == bfd_object) | |
7375 | { | |
b25e3d87 | 7376 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7377 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7378 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7379 | } |
7380 | ||
7381 | return _bfd_generic_close_and_cleanup (abfd); | |
7382 | } | |
7383 | ||
7384 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7385 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7386 | range-checking to interfere. There is nothing else to do in processing | |
7387 | this reloc. */ | |
7388 | ||
7389 | bfd_reloc_status_type | |
217aa764 AM |
7390 | _bfd_elf_rel_vtable_reloc_fn |
7391 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7392 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7393 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7394 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7395 | { |
7396 | return bfd_reloc_ok; | |
7397 | } | |
252b5132 RH |
7398 | \f |
7399 | /* Elf core file support. Much of this only works on native | |
7400 | toolchains, since we rely on knowing the | |
7401 | machine-dependent procfs structure in order to pick | |
c044fabd | 7402 | out details about the corefile. */ |
252b5132 RH |
7403 | |
7404 | #ifdef HAVE_SYS_PROCFS_H | |
7405 | # include <sys/procfs.h> | |
7406 | #endif | |
7407 | ||
c044fabd | 7408 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7409 | |
7410 | static int | |
217aa764 | 7411 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7412 | { |
7413 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7414 | + (elf_tdata (abfd)->core_pid)); | |
7415 | } | |
7416 | ||
252b5132 RH |
7417 | /* If there isn't a section called NAME, make one, using |
7418 | data from SECT. Note, this function will generate a | |
7419 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7420 | overwrite it. */ |
252b5132 | 7421 | |
b34976b6 | 7422 | static bfd_boolean |
217aa764 | 7423 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7424 | { |
c044fabd | 7425 | asection *sect2; |
252b5132 RH |
7426 | |
7427 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7428 | return TRUE; |
252b5132 | 7429 | |
117ed4f8 | 7430 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7431 | if (sect2 == NULL) |
b34976b6 | 7432 | return FALSE; |
252b5132 | 7433 | |
eea6121a | 7434 | sect2->size = sect->size; |
252b5132 | 7435 | sect2->filepos = sect->filepos; |
252b5132 | 7436 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7437 | return TRUE; |
252b5132 RH |
7438 | } |
7439 | ||
bb0082d6 AM |
7440 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7441 | actually creates up to two pseudosections: | |
7442 | - For the single-threaded case, a section named NAME, unless | |
7443 | such a section already exists. | |
7444 | - For the multi-threaded case, a section named "NAME/PID", where | |
7445 | PID is elfcore_make_pid (abfd). | |
7446 | Both pseudosections have identical contents. */ | |
b34976b6 | 7447 | bfd_boolean |
217aa764 AM |
7448 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7449 | char *name, | |
7450 | size_t size, | |
7451 | ufile_ptr filepos) | |
bb0082d6 AM |
7452 | { |
7453 | char buf[100]; | |
7454 | char *threaded_name; | |
d4c88bbb | 7455 | size_t len; |
bb0082d6 AM |
7456 | asection *sect; |
7457 | ||
7458 | /* Build the section name. */ | |
7459 | ||
7460 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7461 | len = strlen (buf) + 1; |
217aa764 | 7462 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7463 | if (threaded_name == NULL) |
b34976b6 | 7464 | return FALSE; |
d4c88bbb | 7465 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7466 | |
117ed4f8 AM |
7467 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7468 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7469 | if (sect == NULL) |
b34976b6 | 7470 | return FALSE; |
eea6121a | 7471 | sect->size = size; |
bb0082d6 | 7472 | sect->filepos = filepos; |
bb0082d6 AM |
7473 | sect->alignment_power = 2; |
7474 | ||
936e320b | 7475 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7476 | } |
7477 | ||
252b5132 | 7478 | /* prstatus_t exists on: |
4a938328 | 7479 | solaris 2.5+ |
252b5132 RH |
7480 | linux 2.[01] + glibc |
7481 | unixware 4.2 | |
7482 | */ | |
7483 | ||
7484 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7485 | |
b34976b6 | 7486 | static bfd_boolean |
217aa764 | 7487 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7488 | { |
eea6121a | 7489 | size_t size; |
7ee38065 | 7490 | int offset; |
252b5132 | 7491 | |
4a938328 MS |
7492 | if (note->descsz == sizeof (prstatus_t)) |
7493 | { | |
7494 | prstatus_t prstat; | |
252b5132 | 7495 | |
eea6121a | 7496 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7497 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7498 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7499 | |
fa49d224 NC |
7500 | /* Do not overwrite the core signal if it |
7501 | has already been set by another thread. */ | |
7502 | if (elf_tdata (abfd)->core_signal == 0) | |
7503 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7504 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7505 | |
4a938328 MS |
7506 | /* pr_who exists on: |
7507 | solaris 2.5+ | |
7508 | unixware 4.2 | |
7509 | pr_who doesn't exist on: | |
7510 | linux 2.[01] | |
7511 | */ | |
252b5132 | 7512 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7513 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7514 | #endif |
4a938328 | 7515 | } |
7ee38065 | 7516 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7517 | else if (note->descsz == sizeof (prstatus32_t)) |
7518 | { | |
7519 | /* 64-bit host, 32-bit corefile */ | |
7520 | prstatus32_t prstat; | |
7521 | ||
eea6121a | 7522 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7523 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7524 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7525 | ||
fa49d224 NC |
7526 | /* Do not overwrite the core signal if it |
7527 | has already been set by another thread. */ | |
7528 | if (elf_tdata (abfd)->core_signal == 0) | |
7529 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7530 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7531 | ||
7532 | /* pr_who exists on: | |
7533 | solaris 2.5+ | |
7534 | unixware 4.2 | |
7535 | pr_who doesn't exist on: | |
7536 | linux 2.[01] | |
7537 | */ | |
7ee38065 | 7538 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7539 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7540 | #endif | |
7541 | } | |
7ee38065 | 7542 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7543 | else |
7544 | { | |
7545 | /* Fail - we don't know how to handle any other | |
7546 | note size (ie. data object type). */ | |
b34976b6 | 7547 | return TRUE; |
4a938328 | 7548 | } |
252b5132 | 7549 | |
bb0082d6 | 7550 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7551 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7552 | size, note->descpos + offset); |
252b5132 RH |
7553 | } |
7554 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7555 | ||
bb0082d6 | 7556 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7557 | static bfd_boolean |
217aa764 AM |
7558 | elfcore_make_note_pseudosection (bfd *abfd, |
7559 | char *name, | |
7560 | Elf_Internal_Note *note) | |
252b5132 | 7561 | { |
936e320b AM |
7562 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7563 | note->descsz, note->descpos); | |
252b5132 RH |
7564 | } |
7565 | ||
ff08c6bb JB |
7566 | /* There isn't a consistent prfpregset_t across platforms, |
7567 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7568 | data structure apart. */ |
7569 | ||
b34976b6 | 7570 | static bfd_boolean |
217aa764 | 7571 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7572 | { |
7573 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7574 | } | |
7575 | ||
ff08c6bb | 7576 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 7577 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 7578 | literally. */ |
c044fabd | 7579 | |
b34976b6 | 7580 | static bfd_boolean |
217aa764 | 7581 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7582 | { |
7583 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7584 | } | |
7585 | ||
97753bd5 AM |
7586 | static bfd_boolean |
7587 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) | |
7588 | { | |
7589 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
7590 | } | |
7591 | ||
89eeb0bc LM |
7592 | static bfd_boolean |
7593 | elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note) | |
7594 | { | |
7595 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note); | |
7596 | } | |
97753bd5 | 7597 | |
252b5132 | 7598 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7599 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7600 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7601 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7602 | #endif | |
252b5132 RH |
7603 | #endif |
7604 | ||
7605 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7606 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7607 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7608 | typedef psinfo32_t elfcore_psinfo32_t; |
7609 | #endif | |
252b5132 RH |
7610 | #endif |
7611 | ||
252b5132 RH |
7612 | /* return a malloc'ed copy of a string at START which is at |
7613 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7614 | the copy will always have a terminating '\0'. */ |
252b5132 | 7615 | |
936e320b | 7616 | char * |
217aa764 | 7617 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7618 | { |
dc810e39 | 7619 | char *dups; |
c044fabd | 7620 | char *end = memchr (start, '\0', max); |
dc810e39 | 7621 | size_t len; |
252b5132 RH |
7622 | |
7623 | if (end == NULL) | |
7624 | len = max; | |
7625 | else | |
7626 | len = end - start; | |
7627 | ||
217aa764 | 7628 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7629 | if (dups == NULL) |
252b5132 RH |
7630 | return NULL; |
7631 | ||
dc810e39 AM |
7632 | memcpy (dups, start, len); |
7633 | dups[len] = '\0'; | |
252b5132 | 7634 | |
dc810e39 | 7635 | return dups; |
252b5132 RH |
7636 | } |
7637 | ||
bb0082d6 | 7638 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7639 | static bfd_boolean |
217aa764 | 7640 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7641 | { |
4a938328 MS |
7642 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7643 | { | |
7644 | elfcore_psinfo_t psinfo; | |
252b5132 | 7645 | |
7ee38065 | 7646 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7647 | |
4a938328 | 7648 | elf_tdata (abfd)->core_program |
936e320b AM |
7649 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7650 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7651 | |
4a938328 | 7652 | elf_tdata (abfd)->core_command |
936e320b AM |
7653 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7654 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7655 | } |
7ee38065 | 7656 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7657 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7658 | { | |
7659 | /* 64-bit host, 32-bit corefile */ | |
7660 | elfcore_psinfo32_t psinfo; | |
7661 | ||
7ee38065 | 7662 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7663 | |
4a938328 | 7664 | elf_tdata (abfd)->core_program |
936e320b AM |
7665 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7666 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7667 | |
7668 | elf_tdata (abfd)->core_command | |
936e320b AM |
7669 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7670 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7671 | } |
7672 | #endif | |
7673 | ||
7674 | else | |
7675 | { | |
7676 | /* Fail - we don't know how to handle any other | |
7677 | note size (ie. data object type). */ | |
b34976b6 | 7678 | return TRUE; |
4a938328 | 7679 | } |
252b5132 RH |
7680 | |
7681 | /* Note that for some reason, a spurious space is tacked | |
7682 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7683 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7684 | |
7685 | { | |
c044fabd | 7686 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7687 | int n = strlen (command); |
7688 | ||
7689 | if (0 < n && command[n - 1] == ' ') | |
7690 | command[n - 1] = '\0'; | |
7691 | } | |
7692 | ||
b34976b6 | 7693 | return TRUE; |
252b5132 RH |
7694 | } |
7695 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7696 | ||
252b5132 | 7697 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7698 | static bfd_boolean |
217aa764 | 7699 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7700 | { |
f572a39d AM |
7701 | if (note->descsz == sizeof (pstatus_t) |
7702 | #if defined (HAVE_PXSTATUS_T) | |
7703 | || note->descsz == sizeof (pxstatus_t) | |
7704 | #endif | |
7705 | ) | |
4a938328 MS |
7706 | { |
7707 | pstatus_t pstat; | |
252b5132 | 7708 | |
4a938328 | 7709 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7710 | |
4a938328 MS |
7711 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7712 | } | |
7ee38065 | 7713 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7714 | else if (note->descsz == sizeof (pstatus32_t)) |
7715 | { | |
7716 | /* 64-bit host, 32-bit corefile */ | |
7717 | pstatus32_t pstat; | |
252b5132 | 7718 | |
4a938328 | 7719 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7720 | |
4a938328 MS |
7721 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7722 | } | |
7723 | #endif | |
252b5132 RH |
7724 | /* Could grab some more details from the "representative" |
7725 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7726 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7727 | |
b34976b6 | 7728 | return TRUE; |
252b5132 RH |
7729 | } |
7730 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7731 | ||
252b5132 | 7732 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7733 | static bfd_boolean |
217aa764 | 7734 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7735 | { |
7736 | lwpstatus_t lwpstat; | |
7737 | char buf[100]; | |
c044fabd | 7738 | char *name; |
d4c88bbb | 7739 | size_t len; |
c044fabd | 7740 | asection *sect; |
252b5132 | 7741 | |
f572a39d AM |
7742 | if (note->descsz != sizeof (lwpstat) |
7743 | #if defined (HAVE_LWPXSTATUS_T) | |
7744 | && note->descsz != sizeof (lwpxstatus_t) | |
7745 | #endif | |
7746 | ) | |
b34976b6 | 7747 | return TRUE; |
252b5132 RH |
7748 | |
7749 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7750 | ||
7751 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7752 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7753 | ||
c044fabd | 7754 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7755 | |
7756 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7757 | len = strlen (buf) + 1; |
217aa764 | 7758 | name = bfd_alloc (abfd, len); |
252b5132 | 7759 | if (name == NULL) |
b34976b6 | 7760 | return FALSE; |
d4c88bbb | 7761 | memcpy (name, buf, len); |
252b5132 | 7762 | |
117ed4f8 | 7763 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7764 | if (sect == NULL) |
b34976b6 | 7765 | return FALSE; |
252b5132 RH |
7766 | |
7767 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7768 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7769 | sect->filepos = note->descpos |
7770 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7771 | #endif | |
7772 | ||
7773 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7774 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7775 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7776 | #endif | |
7777 | ||
252b5132 RH |
7778 | sect->alignment_power = 2; |
7779 | ||
7780 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7781 | return FALSE; |
252b5132 RH |
7782 | |
7783 | /* Make a ".reg2/999" section */ | |
7784 | ||
7785 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7786 | len = strlen (buf) + 1; |
217aa764 | 7787 | name = bfd_alloc (abfd, len); |
252b5132 | 7788 | if (name == NULL) |
b34976b6 | 7789 | return FALSE; |
d4c88bbb | 7790 | memcpy (name, buf, len); |
252b5132 | 7791 | |
117ed4f8 | 7792 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7793 | if (sect == NULL) |
b34976b6 | 7794 | return FALSE; |
252b5132 RH |
7795 | |
7796 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7797 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7798 | sect->filepos = note->descpos |
7799 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7800 | #endif | |
7801 | ||
7802 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7803 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7804 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7805 | #endif | |
7806 | ||
252b5132 RH |
7807 | sect->alignment_power = 2; |
7808 | ||
936e320b | 7809 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7810 | } |
7811 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7812 | ||
b34976b6 | 7813 | static bfd_boolean |
217aa764 | 7814 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7815 | { |
7816 | char buf[30]; | |
c044fabd | 7817 | char *name; |
d4c88bbb | 7818 | size_t len; |
c044fabd | 7819 | asection *sect; |
4a6636fb PA |
7820 | int type; |
7821 | int is_active_thread; | |
7822 | bfd_vma base_addr; | |
16e9c715 | 7823 | |
4a6636fb | 7824 | if (note->descsz < 728) |
b34976b6 | 7825 | return TRUE; |
16e9c715 | 7826 | |
4a6636fb PA |
7827 | if (! CONST_STRNEQ (note->namedata, "win32")) |
7828 | return TRUE; | |
7829 | ||
7830 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 7831 | |
4a6636fb | 7832 | switch (type) |
16e9c715 | 7833 | { |
4a6636fb | 7834 | case 1 /* NOTE_INFO_PROCESS */: |
16e9c715 | 7835 | /* FIXME: need to add ->core_command. */ |
4a6636fb PA |
7836 | /* process_info.pid */ |
7837 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8); | |
7838 | /* process_info.signal */ | |
7839 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12); | |
c044fabd | 7840 | break; |
16e9c715 | 7841 | |
4a6636fb | 7842 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 7843 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
7844 | /* thread_info.tid */ |
7845 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 7846 | |
d4c88bbb | 7847 | len = strlen (buf) + 1; |
217aa764 | 7848 | name = bfd_alloc (abfd, len); |
16e9c715 | 7849 | if (name == NULL) |
b34976b6 | 7850 | return FALSE; |
c044fabd | 7851 | |
d4c88bbb | 7852 | memcpy (name, buf, len); |
16e9c715 | 7853 | |
117ed4f8 | 7854 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7855 | if (sect == NULL) |
b34976b6 | 7856 | return FALSE; |
c044fabd | 7857 | |
4a6636fb PA |
7858 | /* sizeof (thread_info.thread_context) */ |
7859 | sect->size = 716; | |
7860 | /* offsetof (thread_info.thread_context) */ | |
7861 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
7862 | sect->alignment_power = 2; |
7863 | ||
4a6636fb PA |
7864 | /* thread_info.is_active_thread */ |
7865 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
7866 | ||
7867 | if (is_active_thread) | |
16e9c715 | 7868 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 7869 | return FALSE; |
16e9c715 NC |
7870 | break; |
7871 | ||
4a6636fb | 7872 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 7873 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
7874 | /* module_info.base_address */ |
7875 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
0af1713e | 7876 | sprintf (buf, ".module/%08lx", (unsigned long) base_addr); |
c044fabd | 7877 | |
d4c88bbb | 7878 | len = strlen (buf) + 1; |
217aa764 | 7879 | name = bfd_alloc (abfd, len); |
16e9c715 | 7880 | if (name == NULL) |
b34976b6 | 7881 | return FALSE; |
c044fabd | 7882 | |
d4c88bbb | 7883 | memcpy (name, buf, len); |
252b5132 | 7884 | |
117ed4f8 | 7885 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7886 | |
16e9c715 | 7887 | if (sect == NULL) |
b34976b6 | 7888 | return FALSE; |
c044fabd | 7889 | |
eea6121a | 7890 | sect->size = note->descsz; |
16e9c715 | 7891 | sect->filepos = note->descpos; |
16e9c715 NC |
7892 | sect->alignment_power = 2; |
7893 | break; | |
7894 | ||
7895 | default: | |
b34976b6 | 7896 | return TRUE; |
16e9c715 NC |
7897 | } |
7898 | ||
b34976b6 | 7899 | return TRUE; |
16e9c715 | 7900 | } |
252b5132 | 7901 | |
b34976b6 | 7902 | static bfd_boolean |
217aa764 | 7903 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7904 | { |
9c5bfbb7 | 7905 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7906 | |
252b5132 RH |
7907 | switch (note->type) |
7908 | { | |
7909 | default: | |
b34976b6 | 7910 | return TRUE; |
252b5132 | 7911 | |
252b5132 | 7912 | case NT_PRSTATUS: |
bb0082d6 AM |
7913 | if (bed->elf_backend_grok_prstatus) |
7914 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7915 | return TRUE; |
bb0082d6 | 7916 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7917 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7918 | #else |
b34976b6 | 7919 | return TRUE; |
252b5132 RH |
7920 | #endif |
7921 | ||
7922 | #if defined (HAVE_PSTATUS_T) | |
7923 | case NT_PSTATUS: | |
7924 | return elfcore_grok_pstatus (abfd, note); | |
7925 | #endif | |
7926 | ||
7927 | #if defined (HAVE_LWPSTATUS_T) | |
7928 | case NT_LWPSTATUS: | |
7929 | return elfcore_grok_lwpstatus (abfd, note); | |
7930 | #endif | |
7931 | ||
7932 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7933 | return elfcore_grok_prfpreg (abfd, note); | |
7934 | ||
c044fabd | 7935 | case NT_WIN32PSTATUS: |
16e9c715 | 7936 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 7937 | |
c044fabd | 7938 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7939 | if (note->namesz == 6 |
7940 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7941 | return elfcore_grok_prxfpreg (abfd, note); |
7942 | else | |
b34976b6 | 7943 | return TRUE; |
ff08c6bb | 7944 | |
97753bd5 AM |
7945 | case NT_PPC_VMX: |
7946 | if (note->namesz == 6 | |
7947 | && strcmp (note->namedata, "LINUX") == 0) | |
7948 | return elfcore_grok_ppc_vmx (abfd, note); | |
7949 | else | |
7950 | return TRUE; | |
7951 | ||
89eeb0bc LM |
7952 | case NT_PPC_VSX: |
7953 | if (note->namesz == 6 | |
7954 | && strcmp (note->namedata, "LINUX") == 0) | |
7955 | return elfcore_grok_ppc_vsx (abfd, note); | |
7956 | else | |
7957 | return TRUE; | |
7958 | ||
252b5132 RH |
7959 | case NT_PRPSINFO: |
7960 | case NT_PSINFO: | |
bb0082d6 AM |
7961 | if (bed->elf_backend_grok_psinfo) |
7962 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7963 | return TRUE; |
bb0082d6 | 7964 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7965 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7966 | #else |
b34976b6 | 7967 | return TRUE; |
252b5132 | 7968 | #endif |
3333a7c3 RM |
7969 | |
7970 | case NT_AUXV: | |
7971 | { | |
117ed4f8 AM |
7972 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7973 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7974 | |
7975 | if (sect == NULL) | |
7976 | return FALSE; | |
eea6121a | 7977 | sect->size = note->descsz; |
3333a7c3 | 7978 | sect->filepos = note->descpos; |
3333a7c3 RM |
7979 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7980 | ||
7981 | return TRUE; | |
7982 | } | |
252b5132 RH |
7983 | } |
7984 | } | |
7985 | ||
718175fa JK |
7986 | static bfd_boolean |
7987 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
7988 | { | |
7989 | elf_tdata (abfd)->build_id_size = note->descsz; | |
7990 | elf_tdata (abfd)->build_id = bfd_alloc (abfd, note->descsz); | |
7991 | if (elf_tdata (abfd)->build_id == NULL) | |
7992 | return FALSE; | |
7993 | ||
7994 | memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz); | |
7995 | ||
7996 | return TRUE; | |
7997 | } | |
7998 | ||
7999 | static bfd_boolean | |
8000 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
8001 | { | |
8002 | switch (note->type) | |
8003 | { | |
8004 | default: | |
8005 | return TRUE; | |
8006 | ||
8007 | case NT_GNU_BUILD_ID: | |
8008 | return elfobj_grok_gnu_build_id (abfd, note); | |
8009 | } | |
8010 | } | |
8011 | ||
b34976b6 | 8012 | static bfd_boolean |
217aa764 | 8013 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
8014 | { |
8015 | char *cp; | |
8016 | ||
8017 | cp = strchr (note->namedata, '@'); | |
8018 | if (cp != NULL) | |
8019 | { | |
d2b64500 | 8020 | *lwpidp = atoi(cp + 1); |
b34976b6 | 8021 | return TRUE; |
50b2bdb7 | 8022 | } |
b34976b6 | 8023 | return FALSE; |
50b2bdb7 AM |
8024 | } |
8025 | ||
b34976b6 | 8026 | static bfd_boolean |
217aa764 | 8027 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 8028 | { |
50b2bdb7 AM |
8029 | /* Signal number at offset 0x08. */ |
8030 | elf_tdata (abfd)->core_signal | |
8031 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8032 | ||
8033 | /* Process ID at offset 0x50. */ | |
8034 | elf_tdata (abfd)->core_pid | |
8035 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
8036 | ||
8037 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
8038 | elf_tdata (abfd)->core_command | |
8039 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
8040 | ||
7720ba9f MK |
8041 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
8042 | note); | |
50b2bdb7 AM |
8043 | } |
8044 | ||
b34976b6 | 8045 | static bfd_boolean |
217aa764 | 8046 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8047 | { |
8048 | int lwp; | |
8049 | ||
8050 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
8051 | elf_tdata (abfd)->core_lwpid = lwp; | |
8052 | ||
b4db1224 | 8053 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
8054 | { |
8055 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
8056 | find this note before any of the others, which is fine, |
8057 | since the kernel writes this note out first when it | |
8058 | creates a core file. */ | |
47d9a591 | 8059 | |
50b2bdb7 AM |
8060 | return elfcore_grok_netbsd_procinfo (abfd, note); |
8061 | } | |
8062 | ||
b4db1224 JT |
8063 | /* As of Jan 2002 there are no other machine-independent notes |
8064 | defined for NetBSD core files. If the note type is less | |
8065 | than the start of the machine-dependent note types, we don't | |
8066 | understand it. */ | |
47d9a591 | 8067 | |
b4db1224 | 8068 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 8069 | return TRUE; |
50b2bdb7 AM |
8070 | |
8071 | ||
8072 | switch (bfd_get_arch (abfd)) | |
8073 | { | |
08a40648 AM |
8074 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
8075 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
8076 | |
8077 | case bfd_arch_alpha: | |
8078 | case bfd_arch_sparc: | |
8079 | switch (note->type) | |
08a40648 AM |
8080 | { |
8081 | case NT_NETBSDCORE_FIRSTMACH+0: | |
8082 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8083 | |
08a40648 AM |
8084 | case NT_NETBSDCORE_FIRSTMACH+2: |
8085 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8086 | |
08a40648 AM |
8087 | default: |
8088 | return TRUE; | |
8089 | } | |
50b2bdb7 | 8090 | |
08a40648 AM |
8091 | /* On all other arch's, PT_GETREGS == mach+1 and |
8092 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
8093 | |
8094 | default: | |
8095 | switch (note->type) | |
08a40648 AM |
8096 | { |
8097 | case NT_NETBSDCORE_FIRSTMACH+1: | |
8098 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8099 | |
08a40648 AM |
8100 | case NT_NETBSDCORE_FIRSTMACH+3: |
8101 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8102 | |
08a40648 AM |
8103 | default: |
8104 | return TRUE; | |
8105 | } | |
50b2bdb7 AM |
8106 | } |
8107 | /* NOTREACHED */ | |
8108 | } | |
8109 | ||
67cc5033 MK |
8110 | static bfd_boolean |
8111 | elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) | |
8112 | { | |
8113 | /* Signal number at offset 0x08. */ | |
8114 | elf_tdata (abfd)->core_signal | |
8115 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8116 | ||
8117 | /* Process ID at offset 0x20. */ | |
8118 | elf_tdata (abfd)->core_pid | |
8119 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20); | |
8120 | ||
8121 | /* Command name at 0x48 (max 32 bytes, including nul). */ | |
8122 | elf_tdata (abfd)->core_command | |
8123 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31); | |
8124 | ||
8125 | return TRUE; | |
8126 | } | |
8127 | ||
8128 | static bfd_boolean | |
8129 | elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note) | |
8130 | { | |
8131 | if (note->type == NT_OPENBSD_PROCINFO) | |
8132 | return elfcore_grok_openbsd_procinfo (abfd, note); | |
8133 | ||
8134 | if (note->type == NT_OPENBSD_REGS) | |
8135 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
8136 | ||
8137 | if (note->type == NT_OPENBSD_FPREGS) | |
8138 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
8139 | ||
8140 | if (note->type == NT_OPENBSD_XFPREGS) | |
8141 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
8142 | ||
8143 | if (note->type == NT_OPENBSD_AUXV) | |
8144 | { | |
8145 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", | |
8146 | SEC_HAS_CONTENTS); | |
8147 | ||
8148 | if (sect == NULL) | |
8149 | return FALSE; | |
8150 | sect->size = note->descsz; | |
8151 | sect->filepos = note->descpos; | |
8152 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8153 | ||
8154 | return TRUE; | |
8155 | } | |
8156 | ||
8157 | if (note->type == NT_OPENBSD_WCOOKIE) | |
8158 | { | |
8159 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", | |
8160 | SEC_HAS_CONTENTS); | |
8161 | ||
8162 | if (sect == NULL) | |
8163 | return FALSE; | |
8164 | sect->size = note->descsz; | |
8165 | sect->filepos = note->descpos; | |
8166 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
8167 | ||
8168 | return TRUE; | |
8169 | } | |
8170 | ||
8171 | return TRUE; | |
8172 | } | |
8173 | ||
07c6e936 | 8174 | static bfd_boolean |
d3fd4074 | 8175 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
8176 | { |
8177 | void *ddata = note->descdata; | |
8178 | char buf[100]; | |
8179 | char *name; | |
8180 | asection *sect; | |
f8843e87 AM |
8181 | short sig; |
8182 | unsigned flags; | |
07c6e936 NC |
8183 | |
8184 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
8185 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
8186 | ||
f8843e87 AM |
8187 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
8188 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
8189 | ||
8190 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
8191 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
8192 | |
8193 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
8194 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
8195 | { | |
8196 | elf_tdata (abfd)->core_signal = sig; | |
8197 | elf_tdata (abfd)->core_lwpid = *tid; | |
8198 | } | |
07c6e936 | 8199 | |
f8843e87 AM |
8200 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8201 | do not come from signals so we make sure we set the current | |
8202 | thread just in case. */ | |
8203 | if (flags & 0x00000080) | |
8204 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8205 | |
8206 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8207 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8208 | |
217aa764 | 8209 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8210 | if (name == NULL) |
8211 | return FALSE; | |
8212 | strcpy (name, buf); | |
8213 | ||
117ed4f8 | 8214 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8215 | if (sect == NULL) |
8216 | return FALSE; | |
8217 | ||
eea6121a | 8218 | sect->size = note->descsz; |
07c6e936 | 8219 | sect->filepos = note->descpos; |
07c6e936 NC |
8220 | sect->alignment_power = 2; |
8221 | ||
8222 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8223 | } | |
8224 | ||
8225 | static bfd_boolean | |
d69f560c KW |
8226 | elfcore_grok_nto_regs (bfd *abfd, |
8227 | Elf_Internal_Note *note, | |
d3fd4074 | 8228 | long tid, |
d69f560c | 8229 | char *base) |
07c6e936 NC |
8230 | { |
8231 | char buf[100]; | |
8232 | char *name; | |
8233 | asection *sect; | |
8234 | ||
d69f560c | 8235 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8236 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8237 | |
217aa764 | 8238 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8239 | if (name == NULL) |
8240 | return FALSE; | |
8241 | strcpy (name, buf); | |
8242 | ||
117ed4f8 | 8243 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8244 | if (sect == NULL) |
8245 | return FALSE; | |
8246 | ||
eea6121a | 8247 | sect->size = note->descsz; |
07c6e936 | 8248 | sect->filepos = note->descpos; |
07c6e936 NC |
8249 | sect->alignment_power = 2; |
8250 | ||
f8843e87 AM |
8251 | /* This is the current thread. */ |
8252 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8253 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8254 | |
8255 | return TRUE; | |
07c6e936 NC |
8256 | } |
8257 | ||
8258 | #define BFD_QNT_CORE_INFO 7 | |
8259 | #define BFD_QNT_CORE_STATUS 8 | |
8260 | #define BFD_QNT_CORE_GREG 9 | |
8261 | #define BFD_QNT_CORE_FPREG 10 | |
8262 | ||
8263 | static bfd_boolean | |
217aa764 | 8264 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8265 | { |
8266 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8267 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8268 | function. */ |
d3fd4074 | 8269 | static long tid = 1; |
07c6e936 NC |
8270 | |
8271 | switch (note->type) | |
8272 | { | |
d69f560c KW |
8273 | case BFD_QNT_CORE_INFO: |
8274 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8275 | case BFD_QNT_CORE_STATUS: | |
8276 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8277 | case BFD_QNT_CORE_GREG: | |
8278 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8279 | case BFD_QNT_CORE_FPREG: | |
8280 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8281 | default: | |
8282 | return TRUE; | |
07c6e936 NC |
8283 | } |
8284 | } | |
8285 | ||
b15fa79e AM |
8286 | static bfd_boolean |
8287 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
8288 | { | |
8289 | char *name; | |
8290 | asection *sect; | |
8291 | size_t len; | |
8292 | ||
8293 | /* Use note name as section name. */ | |
8294 | len = note->namesz; | |
8295 | name = bfd_alloc (abfd, len); | |
8296 | if (name == NULL) | |
8297 | return FALSE; | |
8298 | memcpy (name, note->namedata, len); | |
8299 | name[len - 1] = '\0'; | |
8300 | ||
8301 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
8302 | if (sect == NULL) | |
8303 | return FALSE; | |
8304 | ||
8305 | sect->size = note->descsz; | |
8306 | sect->filepos = note->descpos; | |
8307 | sect->alignment_power = 1; | |
8308 | ||
8309 | return TRUE; | |
8310 | } | |
8311 | ||
7c76fa91 MS |
8312 | /* Function: elfcore_write_note |
8313 | ||
47d9a591 | 8314 | Inputs: |
a39f3346 | 8315 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8316 | name of note |
8317 | type of note | |
8318 | data for note | |
8319 | size of data for note | |
8320 | ||
a39f3346 AM |
8321 | Writes note to end of buffer. ELF64 notes are written exactly as |
8322 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8323 | that they ought to have 8-byte namesz and descsz field, and have | |
8324 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8325 | ||
7c76fa91 | 8326 | Return: |
a39f3346 | 8327 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8328 | |
8329 | char * | |
a39f3346 | 8330 | elfcore_write_note (bfd *abfd, |
217aa764 | 8331 | char *buf, |
a39f3346 | 8332 | int *bufsiz, |
217aa764 | 8333 | const char *name, |
a39f3346 | 8334 | int type, |
217aa764 | 8335 | const void *input, |
a39f3346 | 8336 | int size) |
7c76fa91 MS |
8337 | { |
8338 | Elf_External_Note *xnp; | |
d4c88bbb | 8339 | size_t namesz; |
d4c88bbb | 8340 | size_t newspace; |
a39f3346 | 8341 | char *dest; |
7c76fa91 | 8342 | |
d4c88bbb | 8343 | namesz = 0; |
d4c88bbb | 8344 | if (name != NULL) |
a39f3346 | 8345 | namesz = strlen (name) + 1; |
d4c88bbb | 8346 | |
a39f3346 | 8347 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8348 | |
a39f3346 | 8349 | buf = realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
8350 | if (buf == NULL) |
8351 | return buf; | |
a39f3346 | 8352 | dest = buf + *bufsiz; |
7c76fa91 MS |
8353 | *bufsiz += newspace; |
8354 | xnp = (Elf_External_Note *) dest; | |
8355 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8356 | H_PUT_32 (abfd, size, xnp->descsz); | |
8357 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8358 | dest = xnp->name; |
8359 | if (name != NULL) | |
8360 | { | |
8361 | memcpy (dest, name, namesz); | |
8362 | dest += namesz; | |
a39f3346 | 8363 | while (namesz & 3) |
d4c88bbb AM |
8364 | { |
8365 | *dest++ = '\0'; | |
a39f3346 | 8366 | ++namesz; |
d4c88bbb AM |
8367 | } |
8368 | } | |
8369 | memcpy (dest, input, size); | |
a39f3346 AM |
8370 | dest += size; |
8371 | while (size & 3) | |
8372 | { | |
8373 | *dest++ = '\0'; | |
8374 | ++size; | |
8375 | } | |
8376 | return buf; | |
7c76fa91 MS |
8377 | } |
8378 | ||
8379 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8380 | char * | |
217aa764 AM |
8381 | elfcore_write_prpsinfo (bfd *abfd, |
8382 | char *buf, | |
8383 | int *bufsiz, | |
8384 | const char *fname, | |
8385 | const char *psargs) | |
7c76fa91 | 8386 | { |
183e98be AM |
8387 | const char *note_name = "CORE"; |
8388 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8389 | ||
8390 | if (bed->elf_backend_write_core_note != NULL) | |
8391 | { | |
8392 | char *ret; | |
8393 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8394 | NT_PRPSINFO, fname, psargs); | |
8395 | if (ret != NULL) | |
8396 | return ret; | |
8397 | } | |
7c76fa91 | 8398 | |
183e98be AM |
8399 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8400 | if (bed->s->elfclass == ELFCLASS32) | |
8401 | { | |
8402 | #if defined (HAVE_PSINFO32_T) | |
8403 | psinfo32_t data; | |
8404 | int note_type = NT_PSINFO; | |
8405 | #else | |
8406 | prpsinfo32_t data; | |
8407 | int note_type = NT_PRPSINFO; | |
8408 | #endif | |
8409 | ||
8410 | memset (&data, 0, sizeof (data)); | |
8411 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8412 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8413 | return elfcore_write_note (abfd, buf, bufsiz, | |
8414 | note_name, note_type, &data, sizeof (data)); | |
8415 | } | |
8416 | else | |
8417 | #endif | |
8418 | { | |
7c76fa91 | 8419 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8420 | psinfo_t data; |
8421 | int note_type = NT_PSINFO; | |
7c76fa91 | 8422 | #else |
183e98be AM |
8423 | prpsinfo_t data; |
8424 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8425 | #endif |
8426 | ||
183e98be AM |
8427 | memset (&data, 0, sizeof (data)); |
8428 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8429 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8430 | return elfcore_write_note (abfd, buf, bufsiz, | |
8431 | note_name, note_type, &data, sizeof (data)); | |
8432 | } | |
7c76fa91 MS |
8433 | } |
8434 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8435 | ||
8436 | #if defined (HAVE_PRSTATUS_T) | |
8437 | char * | |
217aa764 AM |
8438 | elfcore_write_prstatus (bfd *abfd, |
8439 | char *buf, | |
8440 | int *bufsiz, | |
8441 | long pid, | |
8442 | int cursig, | |
8443 | const void *gregs) | |
7c76fa91 | 8444 | { |
183e98be AM |
8445 | const char *note_name = "CORE"; |
8446 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8447 | |
183e98be AM |
8448 | if (bed->elf_backend_write_core_note != NULL) |
8449 | { | |
8450 | char *ret; | |
8451 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8452 | NT_PRSTATUS, | |
8453 | pid, cursig, gregs); | |
8454 | if (ret != NULL) | |
8455 | return ret; | |
8456 | } | |
8457 | ||
8458 | #if defined (HAVE_PRSTATUS32_T) | |
8459 | if (bed->s->elfclass == ELFCLASS32) | |
8460 | { | |
8461 | prstatus32_t prstat; | |
8462 | ||
8463 | memset (&prstat, 0, sizeof (prstat)); | |
8464 | prstat.pr_pid = pid; | |
8465 | prstat.pr_cursig = cursig; | |
8466 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8467 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8468 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8469 | } | |
8470 | else | |
8471 | #endif | |
8472 | { | |
8473 | prstatus_t prstat; | |
8474 | ||
8475 | memset (&prstat, 0, sizeof (prstat)); | |
8476 | prstat.pr_pid = pid; | |
8477 | prstat.pr_cursig = cursig; | |
8478 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8479 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8480 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8481 | } | |
7c76fa91 MS |
8482 | } |
8483 | #endif /* HAVE_PRSTATUS_T */ | |
8484 | ||
51316059 MS |
8485 | #if defined (HAVE_LWPSTATUS_T) |
8486 | char * | |
217aa764 AM |
8487 | elfcore_write_lwpstatus (bfd *abfd, |
8488 | char *buf, | |
8489 | int *bufsiz, | |
8490 | long pid, | |
8491 | int cursig, | |
8492 | const void *gregs) | |
51316059 MS |
8493 | { |
8494 | lwpstatus_t lwpstat; | |
183e98be | 8495 | const char *note_name = "CORE"; |
51316059 MS |
8496 | |
8497 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8498 | lwpstat.pr_lwpid = pid >> 16; | |
8499 | lwpstat.pr_cursig = cursig; | |
8500 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8501 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8502 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8503 | #if !defined(gregs) | |
8504 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8505 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8506 | #else | |
8507 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8508 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8509 | #endif | |
8510 | #endif | |
47d9a591 | 8511 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8512 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8513 | } | |
8514 | #endif /* HAVE_LWPSTATUS_T */ | |
8515 | ||
7c76fa91 MS |
8516 | #if defined (HAVE_PSTATUS_T) |
8517 | char * | |
217aa764 AM |
8518 | elfcore_write_pstatus (bfd *abfd, |
8519 | char *buf, | |
8520 | int *bufsiz, | |
8521 | long pid, | |
6c10990d NC |
8522 | int cursig ATTRIBUTE_UNUSED, |
8523 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8524 | { |
183e98be AM |
8525 | const char *note_name = "CORE"; |
8526 | #if defined (HAVE_PSTATUS32_T) | |
8527 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8528 | |
183e98be AM |
8529 | if (bed->s->elfclass == ELFCLASS32) |
8530 | { | |
8531 | pstatus32_t pstat; | |
8532 | ||
8533 | memset (&pstat, 0, sizeof (pstat)); | |
8534 | pstat.pr_pid = pid & 0xffff; | |
8535 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8536 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8537 | return buf; | |
8538 | } | |
8539 | else | |
8540 | #endif | |
8541 | { | |
8542 | pstatus_t pstat; | |
8543 | ||
8544 | memset (&pstat, 0, sizeof (pstat)); | |
8545 | pstat.pr_pid = pid & 0xffff; | |
8546 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8547 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8548 | return buf; | |
8549 | } | |
7c76fa91 MS |
8550 | } |
8551 | #endif /* HAVE_PSTATUS_T */ | |
8552 | ||
8553 | char * | |
217aa764 AM |
8554 | elfcore_write_prfpreg (bfd *abfd, |
8555 | char *buf, | |
8556 | int *bufsiz, | |
8557 | const void *fpregs, | |
8558 | int size) | |
7c76fa91 | 8559 | { |
183e98be | 8560 | const char *note_name = "CORE"; |
47d9a591 | 8561 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8562 | note_name, NT_FPREGSET, fpregs, size); |
8563 | } | |
8564 | ||
8565 | char * | |
217aa764 AM |
8566 | elfcore_write_prxfpreg (bfd *abfd, |
8567 | char *buf, | |
8568 | int *bufsiz, | |
8569 | const void *xfpregs, | |
8570 | int size) | |
7c76fa91 MS |
8571 | { |
8572 | char *note_name = "LINUX"; | |
47d9a591 | 8573 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8574 | note_name, NT_PRXFPREG, xfpregs, size); |
8575 | } | |
8576 | ||
97753bd5 AM |
8577 | char * |
8578 | elfcore_write_ppc_vmx (bfd *abfd, | |
8579 | char *buf, | |
8580 | int *bufsiz, | |
8581 | const void *ppc_vmx, | |
8582 | int size) | |
8583 | { | |
8584 | char *note_name = "LINUX"; | |
8585 | return elfcore_write_note (abfd, buf, bufsiz, | |
8586 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
8587 | } | |
8588 | ||
89eeb0bc LM |
8589 | char * |
8590 | elfcore_write_ppc_vsx (bfd *abfd, | |
8591 | char *buf, | |
8592 | int *bufsiz, | |
8593 | const void *ppc_vsx, | |
8594 | int size) | |
8595 | { | |
8596 | char *note_name = "LINUX"; | |
8597 | return elfcore_write_note (abfd, buf, bufsiz, | |
8598 | note_name, NT_PPC_VSX, ppc_vsx, size); | |
8599 | } | |
8600 | ||
bb864ac1 CES |
8601 | char * |
8602 | elfcore_write_register_note (bfd *abfd, | |
8603 | char *buf, | |
8604 | int *bufsiz, | |
8605 | const char *section, | |
8606 | const void *data, | |
8607 | int size) | |
8608 | { | |
8609 | if (strcmp (section, ".reg2") == 0) | |
8610 | return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size); | |
8611 | if (strcmp (section, ".reg-xfp") == 0) | |
8612 | return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); | |
8613 | if (strcmp (section, ".reg-ppc-vmx") == 0) | |
8614 | return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); | |
89eeb0bc LM |
8615 | if (strcmp (section, ".reg-ppc-vsx") == 0) |
8616 | return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size); | |
bb864ac1 CES |
8617 | return NULL; |
8618 | } | |
8619 | ||
b34976b6 | 8620 | static bfd_boolean |
718175fa | 8621 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 8622 | { |
c044fabd | 8623 | char *p; |
252b5132 | 8624 | |
252b5132 RH |
8625 | p = buf; |
8626 | while (p < buf + size) | |
8627 | { | |
c044fabd KH |
8628 | /* FIXME: bad alignment assumption. */ |
8629 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8630 | Elf_Internal_Note in; |
8631 | ||
baea7ef1 AM |
8632 | if (offsetof (Elf_External_Note, name) > buf - p + size) |
8633 | return FALSE; | |
8634 | ||
dc810e39 | 8635 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8636 | |
dc810e39 | 8637 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 | 8638 | in.namedata = xnp->name; |
baea7ef1 AM |
8639 | if (in.namesz > buf - in.namedata + size) |
8640 | return FALSE; | |
252b5132 | 8641 | |
dc810e39 | 8642 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8643 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8644 | in.descpos = offset + (in.descdata - buf); | |
baea7ef1 AM |
8645 | if (in.descsz != 0 |
8646 | && (in.descdata >= buf + size | |
8647 | || in.descsz > buf - in.descdata + size)) | |
8648 | return FALSE; | |
252b5132 | 8649 | |
718175fa JK |
8650 | switch (bfd_get_format (abfd)) |
8651 | { | |
8652 | default: | |
8653 | return TRUE; | |
8654 | ||
8655 | case bfd_core: | |
8656 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) | |
8657 | { | |
8658 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8659 | return FALSE; | |
8660 | } | |
67cc5033 MK |
8661 | else if (CONST_STRNEQ (in.namedata, "OpenBSD")) |
8662 | { | |
8663 | if (! elfcore_grok_openbsd_note (abfd, &in)) | |
8664 | return FALSE; | |
8665 | } | |
718175fa JK |
8666 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
8667 | { | |
8668 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8669 | return FALSE; | |
8670 | } | |
b15fa79e AM |
8671 | else if (CONST_STRNEQ (in.namedata, "SPU/")) |
8672 | { | |
8673 | if (! elfcore_grok_spu_note (abfd, &in)) | |
8674 | return FALSE; | |
8675 | } | |
718175fa JK |
8676 | else |
8677 | { | |
8678 | if (! elfcore_grok_note (abfd, &in)) | |
8679 | return FALSE; | |
8680 | } | |
8681 | break; | |
8682 | ||
8683 | case bfd_object: | |
8684 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
8685 | { | |
8686 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
8687 | return FALSE; | |
8688 | } | |
8689 | break; | |
08a40648 | 8690 | } |
252b5132 RH |
8691 | |
8692 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8693 | } | |
8694 | ||
718175fa JK |
8695 | return TRUE; |
8696 | } | |
8697 | ||
8698 | static bfd_boolean | |
8699 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
8700 | { | |
8701 | char *buf; | |
8702 | ||
8703 | if (size <= 0) | |
8704 | return TRUE; | |
8705 | ||
8706 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
8707 | return FALSE; | |
8708 | ||
8709 | buf = bfd_malloc (size); | |
8710 | if (buf == NULL) | |
8711 | return FALSE; | |
8712 | ||
8713 | if (bfd_bread (buf, size, abfd) != size | |
8714 | || !elf_parse_notes (abfd, buf, size, offset)) | |
8715 | { | |
8716 | free (buf); | |
8717 | return FALSE; | |
8718 | } | |
8719 | ||
252b5132 | 8720 | free (buf); |
b34976b6 | 8721 | return TRUE; |
252b5132 | 8722 | } |
98d8431c JB |
8723 | \f |
8724 | /* Providing external access to the ELF program header table. */ | |
8725 | ||
8726 | /* Return an upper bound on the number of bytes required to store a | |
8727 | copy of ABFD's program header table entries. Return -1 if an error | |
8728 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8729 | |
98d8431c | 8730 | long |
217aa764 | 8731 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8732 | { |
8733 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8734 | { | |
8735 | bfd_set_error (bfd_error_wrong_format); | |
8736 | return -1; | |
8737 | } | |
8738 | ||
936e320b | 8739 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8740 | } |
8741 | ||
98d8431c JB |
8742 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8743 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8744 | defined in include/elf/internal.h. To find out how large the | |
8745 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8746 | ||
8747 | Return the number of program header table entries read, or -1 if an | |
8748 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8749 | |
98d8431c | 8750 | int |
217aa764 | 8751 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8752 | { |
8753 | int num_phdrs; | |
8754 | ||
8755 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8756 | { | |
8757 | bfd_set_error (bfd_error_wrong_format); | |
8758 | return -1; | |
8759 | } | |
8760 | ||
8761 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8762 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8763 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8764 | ||
8765 | return num_phdrs; | |
8766 | } | |
ae4221d7 | 8767 | |
db6751f2 | 8768 | enum elf_reloc_type_class |
217aa764 | 8769 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8770 | { |
8771 | return reloc_class_normal; | |
8772 | } | |
f8df10f4 | 8773 | |
47d9a591 | 8774 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8775 | relocation against a local symbol. */ |
8776 | ||
8777 | bfd_vma | |
217aa764 AM |
8778 | _bfd_elf_rela_local_sym (bfd *abfd, |
8779 | Elf_Internal_Sym *sym, | |
8517fae7 | 8780 | asection **psec, |
217aa764 | 8781 | Elf_Internal_Rela *rel) |
f8df10f4 | 8782 | { |
8517fae7 | 8783 | asection *sec = *psec; |
f8df10f4 JJ |
8784 | bfd_vma relocation; |
8785 | ||
8786 | relocation = (sec->output_section->vma | |
8787 | + sec->output_offset | |
8788 | + sym->st_value); | |
8789 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8790 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8791 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8792 | { |
f8df10f4 | 8793 | rel->r_addend = |
8517fae7 | 8794 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8795 | elf_section_data (sec)->sec_info, |
753731ee AM |
8796 | sym->st_value + rel->r_addend); |
8797 | if (sec != *psec) | |
8798 | { | |
8799 | /* If we have changed the section, and our original section is | |
8800 | marked with SEC_EXCLUDE, it means that the original | |
8801 | SEC_MERGE section has been completely subsumed in some | |
8802 | other SEC_MERGE section. In this case, we need to leave | |
8803 | some info around for --emit-relocs. */ | |
8804 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8805 | sec->kept_section = *psec; | |
8806 | sec = *psec; | |
8807 | } | |
8517fae7 AM |
8808 | rel->r_addend -= relocation; |
8809 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8810 | } |
8811 | return relocation; | |
8812 | } | |
c629eae0 JJ |
8813 | |
8814 | bfd_vma | |
217aa764 AM |
8815 | _bfd_elf_rel_local_sym (bfd *abfd, |
8816 | Elf_Internal_Sym *sym, | |
8817 | asection **psec, | |
8818 | bfd_vma addend) | |
47d9a591 | 8819 | { |
c629eae0 JJ |
8820 | asection *sec = *psec; |
8821 | ||
68bfbfcc | 8822 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8823 | return sym->st_value + addend; |
8824 | ||
8825 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8826 | elf_section_data (sec)->sec_info, |
753731ee | 8827 | sym->st_value + addend); |
c629eae0 JJ |
8828 | } |
8829 | ||
8830 | bfd_vma | |
217aa764 | 8831 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8832 | struct bfd_link_info *info, |
217aa764 AM |
8833 | asection *sec, |
8834 | bfd_vma offset) | |
c629eae0 | 8835 | { |
68bfbfcc | 8836 | switch (sec->sec_info_type) |
65765700 JJ |
8837 | { |
8838 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8839 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8840 | offset); | |
65765700 | 8841 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8842 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8843 | default: |
8844 | return offset; | |
8845 | } | |
c629eae0 | 8846 | } |
3333a7c3 RM |
8847 | \f |
8848 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8849 | reconstruct an ELF file by reading the segments out of remote memory | |
8850 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8851 | points to. If not null, *LOADBASEP is filled in with the difference | |
8852 | between the VMAs from which the segments were read, and the VMAs the | |
8853 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8854 | ||
8855 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8856 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8857 | should return zero on success or an `errno' code on failure. TEMPL must | |
8858 | be a BFD for an ELF target with the word size and byte order found in | |
8859 | the remote memory. */ | |
8860 | ||
8861 | bfd * | |
217aa764 AM |
8862 | bfd_elf_bfd_from_remote_memory |
8863 | (bfd *templ, | |
8864 | bfd_vma ehdr_vma, | |
8865 | bfd_vma *loadbasep, | |
f075ee0c | 8866 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8867 | { |
8868 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8869 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8870 | } | |
4c45e5c9 JJ |
8871 | \f |
8872 | long | |
c9727e01 AM |
8873 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8874 | long symcount ATTRIBUTE_UNUSED, | |
8875 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8876 | long dynsymcount, |
c9727e01 AM |
8877 | asymbol **dynsyms, |
8878 | asymbol **ret) | |
4c45e5c9 JJ |
8879 | { |
8880 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8881 | asection *relplt; | |
8882 | asymbol *s; | |
8883 | const char *relplt_name; | |
8884 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8885 | arelent *p; | |
8886 | long count, i, n; | |
8887 | size_t size; | |
8888 | Elf_Internal_Shdr *hdr; | |
8889 | char *names; | |
8890 | asection *plt; | |
8891 | ||
8615f3f2 AM |
8892 | *ret = NULL; |
8893 | ||
90e3cdf2 JJ |
8894 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8895 | return 0; | |
8896 | ||
8615f3f2 AM |
8897 | if (dynsymcount <= 0) |
8898 | return 0; | |
8899 | ||
4c45e5c9 JJ |
8900 | if (!bed->plt_sym_val) |
8901 | return 0; | |
8902 | ||
8903 | relplt_name = bed->relplt_name; | |
8904 | if (relplt_name == NULL) | |
d35fd659 | 8905 | relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt"; |
4c45e5c9 JJ |
8906 | relplt = bfd_get_section_by_name (abfd, relplt_name); |
8907 | if (relplt == NULL) | |
8908 | return 0; | |
8909 | ||
8910 | hdr = &elf_section_data (relplt)->this_hdr; | |
8911 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8912 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8913 | return 0; | |
8914 | ||
8915 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8916 | if (plt == NULL) | |
8917 | return 0; | |
8918 | ||
8919 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8920 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8921 | return -1; |
8922 | ||
eea6121a | 8923 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8924 | size = count * sizeof (asymbol); |
8925 | p = relplt->relocation; | |
cb53bf42 | 8926 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
041de40d AM |
8927 | { |
8928 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8929 | if (p->addend != 0) | |
8930 | { | |
8931 | #ifdef BFD64 | |
8932 | size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64); | |
8933 | #else | |
8934 | size += sizeof ("+0x") - 1 + 8; | |
8935 | #endif | |
8936 | } | |
8937 | } | |
4c45e5c9 JJ |
8938 | |
8939 | s = *ret = bfd_malloc (size); | |
8940 | if (s == NULL) | |
8941 | return -1; | |
8942 | ||
8943 | names = (char *) (s + count); | |
8944 | p = relplt->relocation; | |
8945 | n = 0; | |
cb53bf42 | 8946 | for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel) |
4c45e5c9 JJ |
8947 | { |
8948 | size_t len; | |
8949 | bfd_vma addr; | |
8950 | ||
8951 | addr = bed->plt_sym_val (i, plt, p); | |
8952 | if (addr == (bfd_vma) -1) | |
8953 | continue; | |
8954 | ||
8955 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8956 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8957 | we are defining a symbol, ensure one of them is set. */ | |
8958 | if ((s->flags & BSF_LOCAL) == 0) | |
8959 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 8960 | s->flags |= BSF_SYNTHETIC; |
4c45e5c9 JJ |
8961 | s->section = plt; |
8962 | s->value = addr - plt->vma; | |
8963 | s->name = names; | |
8f39ba8e | 8964 | s->udata.p = NULL; |
4c45e5c9 JJ |
8965 | len = strlen ((*p->sym_ptr_ptr)->name); |
8966 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8967 | names += len; | |
041de40d AM |
8968 | if (p->addend != 0) |
8969 | { | |
1d770845 L |
8970 | char buf[30], *a; |
8971 | int len; | |
041de40d AM |
8972 | memcpy (names, "+0x", sizeof ("+0x") - 1); |
8973 | names += sizeof ("+0x") - 1; | |
1d770845 L |
8974 | bfd_sprintf_vma (abfd, buf, p->addend); |
8975 | for (a = buf; *a == '0'; ++a) | |
8976 | ; | |
8977 | len = strlen (a); | |
8978 | memcpy (names, a, len); | |
8979 | names += len; | |
041de40d | 8980 | } |
4c45e5c9 JJ |
8981 | memcpy (names, "@plt", sizeof ("@plt")); |
8982 | names += sizeof ("@plt"); | |
8f39ba8e | 8983 | ++s, ++n; |
4c45e5c9 JJ |
8984 | } |
8985 | ||
8986 | return n; | |
8987 | } | |
3d7f7666 | 8988 | |
3b22753a L |
8989 | /* It is only used by x86-64 so far. */ |
8990 | asection _bfd_elf_large_com_section | |
8991 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8992 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 8993 | |
d1036acb L |
8994 | void |
8995 | _bfd_elf_set_osabi (bfd * abfd, | |
8996 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
8997 | { | |
8998 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
8999 | ||
9000 | i_ehdrp = elf_elfheader (abfd); | |
9001 | ||
9002 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
d8045f23 NC |
9003 | |
9004 | /* To make things simpler for the loader on Linux systems we set the | |
9005 | osabi field to ELFOSABI_LINUX if the binary contains symbols of | |
9006 | the STT_GNU_IFUNC type. */ | |
9007 | if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE | |
9008 | && elf_tdata (abfd)->has_ifunc_symbols) | |
9009 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; | |
d1036acb | 9010 | } |
fcb93ecf PB |
9011 | |
9012 | ||
9013 | /* Return TRUE for ELF symbol types that represent functions. | |
9014 | This is the default version of this function, which is sufficient for | |
d8045f23 | 9015 | most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */ |
fcb93ecf PB |
9016 | |
9017 | bfd_boolean | |
9018 | _bfd_elf_is_function_type (unsigned int type) | |
9019 | { | |
d8045f23 NC |
9020 | return (type == STT_FUNC |
9021 | || type == STT_GNU_IFUNC); | |
fcb93ecf | 9022 | } |