Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
0e922b77 | 4 | 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 11 | (at your option) any later version. |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
22 | ||
252b5132 | 23 | |
1b74d094 BW |
24 | /* |
25 | SECTION | |
252b5132 RH |
26 | ELF backends |
27 | ||
28 | BFD support for ELF formats is being worked on. | |
29 | Currently, the best supported back ends are for sparc and i386 | |
30 | (running svr4 or Solaris 2). | |
31 | ||
32 | Documentation of the internals of the support code still needs | |
33 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 34 | haven't bothered yet. */ |
252b5132 | 35 | |
7ee38065 MS |
36 | /* For sparc64-cross-sparc32. */ |
37 | #define _SYSCALL32 | |
252b5132 | 38 | #include "sysdep.h" |
3db64b00 | 39 | #include "bfd.h" |
252b5132 RH |
40 | #include "bfdlink.h" |
41 | #include "libbfd.h" | |
42 | #define ARCH_SIZE 0 | |
43 | #include "elf-bfd.h" | |
e0e8c97f | 44 | #include "libiberty.h" |
252b5132 | 45 | |
217aa764 | 46 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 47 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
48 | static bfd_boolean prep_headers (bfd *); |
49 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
50 | static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ; | |
50b2bdb7 | 51 | |
252b5132 RH |
52 | /* Swap version information in and out. The version information is |
53 | currently size independent. If that ever changes, this code will | |
54 | need to move into elfcode.h. */ | |
55 | ||
56 | /* Swap in a Verdef structure. */ | |
57 | ||
58 | void | |
217aa764 AM |
59 | _bfd_elf_swap_verdef_in (bfd *abfd, |
60 | const Elf_External_Verdef *src, | |
61 | Elf_Internal_Verdef *dst) | |
252b5132 | 62 | { |
dc810e39 AM |
63 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
64 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
65 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
66 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
67 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
68 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
69 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
70 | } |
71 | ||
72 | /* Swap out a Verdef structure. */ | |
73 | ||
74 | void | |
217aa764 AM |
75 | _bfd_elf_swap_verdef_out (bfd *abfd, |
76 | const Elf_Internal_Verdef *src, | |
77 | Elf_External_Verdef *dst) | |
252b5132 | 78 | { |
dc810e39 AM |
79 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
80 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
81 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
82 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
83 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
84 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
85 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
86 | } |
87 | ||
88 | /* Swap in a Verdaux structure. */ | |
89 | ||
90 | void | |
217aa764 AM |
91 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
92 | const Elf_External_Verdaux *src, | |
93 | Elf_Internal_Verdaux *dst) | |
252b5132 | 94 | { |
dc810e39 AM |
95 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
96 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
97 | } |
98 | ||
99 | /* Swap out a Verdaux structure. */ | |
100 | ||
101 | void | |
217aa764 AM |
102 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
103 | const Elf_Internal_Verdaux *src, | |
104 | Elf_External_Verdaux *dst) | |
252b5132 | 105 | { |
dc810e39 AM |
106 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
107 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
108 | } |
109 | ||
110 | /* Swap in a Verneed structure. */ | |
111 | ||
112 | void | |
217aa764 AM |
113 | _bfd_elf_swap_verneed_in (bfd *abfd, |
114 | const Elf_External_Verneed *src, | |
115 | Elf_Internal_Verneed *dst) | |
252b5132 | 116 | { |
dc810e39 AM |
117 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
118 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
119 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
120 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
121 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
122 | } |
123 | ||
124 | /* Swap out a Verneed structure. */ | |
125 | ||
126 | void | |
217aa764 AM |
127 | _bfd_elf_swap_verneed_out (bfd *abfd, |
128 | const Elf_Internal_Verneed *src, | |
129 | Elf_External_Verneed *dst) | |
252b5132 | 130 | { |
dc810e39 AM |
131 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
132 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
133 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
134 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
135 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
136 | } |
137 | ||
138 | /* Swap in a Vernaux structure. */ | |
139 | ||
140 | void | |
217aa764 AM |
141 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
142 | const Elf_External_Vernaux *src, | |
143 | Elf_Internal_Vernaux *dst) | |
252b5132 | 144 | { |
dc810e39 AM |
145 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
146 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
147 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
148 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
149 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
150 | } |
151 | ||
152 | /* Swap out a Vernaux structure. */ | |
153 | ||
154 | void | |
217aa764 AM |
155 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
156 | const Elf_Internal_Vernaux *src, | |
157 | Elf_External_Vernaux *dst) | |
252b5132 | 158 | { |
dc810e39 AM |
159 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
160 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
161 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
162 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
163 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
164 | } |
165 | ||
166 | /* Swap in a Versym structure. */ | |
167 | ||
168 | void | |
217aa764 AM |
169 | _bfd_elf_swap_versym_in (bfd *abfd, |
170 | const Elf_External_Versym *src, | |
171 | Elf_Internal_Versym *dst) | |
252b5132 | 172 | { |
dc810e39 | 173 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
174 | } |
175 | ||
176 | /* Swap out a Versym structure. */ | |
177 | ||
178 | void | |
217aa764 AM |
179 | _bfd_elf_swap_versym_out (bfd *abfd, |
180 | const Elf_Internal_Versym *src, | |
181 | Elf_External_Versym *dst) | |
252b5132 | 182 | { |
dc810e39 | 183 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
184 | } |
185 | ||
186 | /* Standard ELF hash function. Do not change this function; you will | |
187 | cause invalid hash tables to be generated. */ | |
3a99b017 | 188 | |
252b5132 | 189 | unsigned long |
217aa764 | 190 | bfd_elf_hash (const char *namearg) |
252b5132 | 191 | { |
3a99b017 | 192 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
193 | unsigned long h = 0; |
194 | unsigned long g; | |
195 | int ch; | |
196 | ||
197 | while ((ch = *name++) != '\0') | |
198 | { | |
199 | h = (h << 4) + ch; | |
200 | if ((g = (h & 0xf0000000)) != 0) | |
201 | { | |
202 | h ^= g >> 24; | |
203 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
204 | this case and on some machines one insn instead of two. */ | |
205 | h ^= g; | |
206 | } | |
207 | } | |
32dfa85d | 208 | return h & 0xffffffff; |
252b5132 RH |
209 | } |
210 | ||
fdc90cb4 JJ |
211 | /* DT_GNU_HASH hash function. Do not change this function; you will |
212 | cause invalid hash tables to be generated. */ | |
213 | ||
214 | unsigned long | |
215 | bfd_elf_gnu_hash (const char *namearg) | |
216 | { | |
217 | const unsigned char *name = (const unsigned char *) namearg; | |
218 | unsigned long h = 5381; | |
219 | unsigned char ch; | |
220 | ||
221 | while ((ch = *name++) != '\0') | |
222 | h = (h << 5) + h + ch; | |
223 | return h & 0xffffffff; | |
224 | } | |
225 | ||
b34976b6 | 226 | bfd_boolean |
217aa764 | 227 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 228 | { |
62d7a5f6 AM |
229 | if (abfd->tdata.any == NULL) |
230 | { | |
231 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); | |
232 | if (abfd->tdata.any == NULL) | |
233 | return FALSE; | |
234 | } | |
235 | ||
236 | elf_tdata (abfd)->program_header_size = (bfd_size_type) -1; | |
252b5132 | 237 | |
b34976b6 | 238 | return TRUE; |
252b5132 RH |
239 | } |
240 | ||
b34976b6 | 241 | bfd_boolean |
217aa764 | 242 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 243 | { |
c044fabd | 244 | /* I think this can be done just like an object file. */ |
252b5132 RH |
245 | return bfd_elf_mkobject (abfd); |
246 | } | |
247 | ||
248 | char * | |
217aa764 | 249 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
250 | { |
251 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 252 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
253 | file_ptr offset; |
254 | bfd_size_type shstrtabsize; | |
252b5132 RH |
255 | |
256 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
257 | if (i_shdrp == 0 |
258 | || shindex >= elf_numsections (abfd) | |
259 | || i_shdrp[shindex] == 0) | |
f075ee0c | 260 | return NULL; |
252b5132 | 261 | |
f075ee0c | 262 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
263 | if (shstrtab == NULL) |
264 | { | |
c044fabd | 265 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
266 | offset = i_shdrp[shindex]->sh_offset; |
267 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
268 | |
269 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
270 | in case the string table is not terminated. */ | |
271 | if (shstrtabsize + 1 == 0 | |
272 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
273 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
274 | shstrtab = NULL; | |
275 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
276 | { | |
277 | if (bfd_get_error () != bfd_error_system_call) | |
278 | bfd_set_error (bfd_error_file_truncated); | |
279 | shstrtab = NULL; | |
280 | } | |
281 | else | |
282 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 283 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 284 | } |
f075ee0c | 285 | return (char *) shstrtab; |
252b5132 RH |
286 | } |
287 | ||
288 | char * | |
217aa764 AM |
289 | bfd_elf_string_from_elf_section (bfd *abfd, |
290 | unsigned int shindex, | |
291 | unsigned int strindex) | |
252b5132 RH |
292 | { |
293 | Elf_Internal_Shdr *hdr; | |
294 | ||
295 | if (strindex == 0) | |
296 | return ""; | |
297 | ||
74f2e02b AM |
298 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
299 | return NULL; | |
300 | ||
252b5132 RH |
301 | hdr = elf_elfsections (abfd)[shindex]; |
302 | ||
303 | if (hdr->contents == NULL | |
304 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
305 | return NULL; | |
306 | ||
307 | if (strindex >= hdr->sh_size) | |
308 | { | |
1b3a8575 | 309 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 310 | (*_bfd_error_handler) |
d003868e AM |
311 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
312 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 313 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 314 | ? ".shstrtab" |
1b3a8575 | 315 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
316 | return ""; |
317 | } | |
318 | ||
319 | return ((char *) hdr->contents) + strindex; | |
320 | } | |
321 | ||
6cdc0ccc AM |
322 | /* Read and convert symbols to internal format. |
323 | SYMCOUNT specifies the number of symbols to read, starting from | |
324 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
325 | are non-NULL, they are used to store the internal symbols, external | |
326 | symbols, and symbol section index extensions, respectively. */ | |
327 | ||
328 | Elf_Internal_Sym * | |
217aa764 AM |
329 | bfd_elf_get_elf_syms (bfd *ibfd, |
330 | Elf_Internal_Shdr *symtab_hdr, | |
331 | size_t symcount, | |
332 | size_t symoffset, | |
333 | Elf_Internal_Sym *intsym_buf, | |
334 | void *extsym_buf, | |
335 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
336 | { |
337 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 338 | void *alloc_ext; |
df622259 | 339 | const bfd_byte *esym; |
6cdc0ccc AM |
340 | Elf_External_Sym_Shndx *alloc_extshndx; |
341 | Elf_External_Sym_Shndx *shndx; | |
342 | Elf_Internal_Sym *isym; | |
343 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 344 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
345 | size_t extsym_size; |
346 | bfd_size_type amt; | |
347 | file_ptr pos; | |
348 | ||
349 | if (symcount == 0) | |
350 | return intsym_buf; | |
351 | ||
352 | /* Normal syms might have section extension entries. */ | |
353 | shndx_hdr = NULL; | |
354 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
355 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
356 | ||
357 | /* Read the symbols. */ | |
358 | alloc_ext = NULL; | |
359 | alloc_extshndx = NULL; | |
360 | bed = get_elf_backend_data (ibfd); | |
361 | extsym_size = bed->s->sizeof_sym; | |
362 | amt = symcount * extsym_size; | |
363 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
364 | if (extsym_buf == NULL) | |
365 | { | |
d0fb9a8d | 366 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
367 | extsym_buf = alloc_ext; |
368 | } | |
369 | if (extsym_buf == NULL | |
370 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
371 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
372 | { | |
373 | intsym_buf = NULL; | |
374 | goto out; | |
375 | } | |
376 | ||
377 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
378 | extshndx_buf = NULL; | |
379 | else | |
380 | { | |
381 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
382 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
383 | if (extshndx_buf == NULL) | |
384 | { | |
d0fb9a8d JJ |
385 | alloc_extshndx = bfd_malloc2 (symcount, |
386 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
387 | extshndx_buf = alloc_extshndx; |
388 | } | |
389 | if (extshndx_buf == NULL | |
390 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
391 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
392 | { | |
393 | intsym_buf = NULL; | |
394 | goto out; | |
395 | } | |
396 | } | |
397 | ||
398 | if (intsym_buf == NULL) | |
399 | { | |
d0fb9a8d | 400 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
401 | if (intsym_buf == NULL) |
402 | goto out; | |
403 | } | |
404 | ||
405 | /* Convert the symbols to internal form. */ | |
406 | isymend = intsym_buf + symcount; | |
407 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
408 | isym < isymend; | |
409 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
410 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
411 | { | |
412 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
413 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
414 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
415 | ibfd, (unsigned long) symoffset); | |
416 | intsym_buf = NULL; | |
417 | goto out; | |
418 | } | |
6cdc0ccc AM |
419 | |
420 | out: | |
421 | if (alloc_ext != NULL) | |
422 | free (alloc_ext); | |
423 | if (alloc_extshndx != NULL) | |
424 | free (alloc_extshndx); | |
425 | ||
426 | return intsym_buf; | |
427 | } | |
428 | ||
5cab59f6 AM |
429 | /* Look up a symbol name. */ |
430 | const char * | |
be8dd2ca AM |
431 | bfd_elf_sym_name (bfd *abfd, |
432 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
433 | Elf_Internal_Sym *isym, |
434 | asection *sym_sec) | |
5cab59f6 | 435 | { |
26c61ae5 | 436 | const char *name; |
5cab59f6 | 437 | unsigned int iname = isym->st_name; |
be8dd2ca | 438 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 439 | |
138f35cc JJ |
440 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
441 | /* Check for a bogus st_shndx to avoid crashing. */ | |
442 | && isym->st_shndx < elf_numsections (abfd) | |
443 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
444 | { |
445 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
446 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
447 | } | |
448 | ||
26c61ae5 L |
449 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
450 | if (name == NULL) | |
451 | name = "(null)"; | |
452 | else if (sym_sec && *name == '\0') | |
453 | name = bfd_section_name (abfd, sym_sec); | |
454 | ||
455 | return name; | |
5cab59f6 AM |
456 | } |
457 | ||
dbb410c3 AM |
458 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
459 | sections. The first element is the flags, the rest are section | |
460 | pointers. */ | |
461 | ||
462 | typedef union elf_internal_group { | |
463 | Elf_Internal_Shdr *shdr; | |
464 | unsigned int flags; | |
465 | } Elf_Internal_Group; | |
466 | ||
b885599b AM |
467 | /* Return the name of the group signature symbol. Why isn't the |
468 | signature just a string? */ | |
469 | ||
470 | static const char * | |
217aa764 | 471 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 472 | { |
9dce4196 | 473 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
474 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
475 | Elf_External_Sym_Shndx eshndx; | |
476 | Elf_Internal_Sym isym; | |
b885599b | 477 | |
13792e9d L |
478 | /* First we need to ensure the symbol table is available. Make sure |
479 | that it is a symbol table section. */ | |
480 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
481 | if (hdr->sh_type != SHT_SYMTAB | |
482 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
483 | return NULL; |
484 | ||
9dce4196 AM |
485 | /* Go read the symbol. */ |
486 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
487 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
488 | &isym, esym, &eshndx) == NULL) | |
b885599b | 489 | return NULL; |
9dce4196 | 490 | |
26c61ae5 | 491 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
492 | } |
493 | ||
dbb410c3 AM |
494 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
495 | ||
b34976b6 | 496 | static bfd_boolean |
217aa764 | 497 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
498 | { |
499 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
500 | ||
501 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
502 | is set to -1 if there are no SHT_GROUP sections. */ | |
503 | if (num_group == 0) | |
504 | { | |
505 | unsigned int i, shnum; | |
506 | ||
507 | /* First count the number of groups. If we have a SHT_GROUP | |
508 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 509 | shnum = elf_numsections (abfd); |
dbb410c3 | 510 | num_group = 0; |
08a40648 | 511 | |
1783205a NC |
512 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ |
513 | ( (shdr)->sh_type == SHT_GROUP \ | |
514 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
515 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
516 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 517 | |
dbb410c3 AM |
518 | for (i = 0; i < shnum; i++) |
519 | { | |
520 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
521 | |
522 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
523 | num_group += 1; |
524 | } | |
525 | ||
526 | if (num_group == 0) | |
20dbb49d L |
527 | { |
528 | num_group = (unsigned) -1; | |
529 | elf_tdata (abfd)->num_group = num_group; | |
530 | } | |
531 | else | |
dbb410c3 AM |
532 | { |
533 | /* We keep a list of elf section headers for group sections, | |
534 | so we can find them quickly. */ | |
20dbb49d | 535 | bfd_size_type amt; |
d0fb9a8d | 536 | |
20dbb49d | 537 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
538 | elf_tdata (abfd)->group_sect_ptr |
539 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 540 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 541 | return FALSE; |
dbb410c3 AM |
542 | |
543 | num_group = 0; | |
544 | for (i = 0; i < shnum; i++) | |
545 | { | |
546 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
547 | |
548 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 549 | { |
973ffd63 | 550 | unsigned char *src; |
dbb410c3 AM |
551 | Elf_Internal_Group *dest; |
552 | ||
553 | /* Add to list of sections. */ | |
554 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
555 | num_group += 1; | |
556 | ||
557 | /* Read the raw contents. */ | |
558 | BFD_ASSERT (sizeof (*dest) >= 4); | |
559 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
560 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
561 | sizeof (*dest) / 4); | |
1783205a NC |
562 | /* PR binutils/4110: Handle corrupt group headers. */ |
563 | if (shdr->contents == NULL) | |
564 | { | |
565 | _bfd_error_handler | |
566 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
567 | bfd_set_error (bfd_error_bad_value); | |
568 | return FALSE; | |
569 | } | |
570 | ||
571 | memset (shdr->contents, 0, amt); | |
572 | ||
573 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
574 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
575 | != shdr->sh_size)) | |
b34976b6 | 576 | return FALSE; |
dbb410c3 AM |
577 | |
578 | /* Translate raw contents, a flag word followed by an | |
579 | array of elf section indices all in target byte order, | |
580 | to the flag word followed by an array of elf section | |
581 | pointers. */ | |
582 | src = shdr->contents + shdr->sh_size; | |
583 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
584 | while (1) | |
585 | { | |
586 | unsigned int idx; | |
587 | ||
588 | src -= 4; | |
589 | --dest; | |
590 | idx = H_GET_32 (abfd, src); | |
591 | if (src == shdr->contents) | |
592 | { | |
593 | dest->flags = idx; | |
b885599b AM |
594 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
595 | shdr->bfd_section->flags | |
596 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
597 | break; |
598 | } | |
599 | if (idx >= shnum) | |
600 | { | |
601 | ((*_bfd_error_handler) | |
d003868e | 602 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
603 | idx = 0; |
604 | } | |
605 | dest->shdr = elf_elfsections (abfd)[idx]; | |
606 | } | |
607 | } | |
608 | } | |
609 | } | |
610 | } | |
611 | ||
612 | if (num_group != (unsigned) -1) | |
613 | { | |
614 | unsigned int i; | |
615 | ||
616 | for (i = 0; i < num_group; i++) | |
617 | { | |
618 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
619 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
620 | unsigned int n_elt = shdr->sh_size / 4; | |
621 | ||
622 | /* Look through this group's sections to see if current | |
623 | section is a member. */ | |
624 | while (--n_elt != 0) | |
625 | if ((++idx)->shdr == hdr) | |
626 | { | |
e0e8c97f | 627 | asection *s = NULL; |
dbb410c3 AM |
628 | |
629 | /* We are a member of this group. Go looking through | |
630 | other members to see if any others are linked via | |
631 | next_in_group. */ | |
632 | idx = (Elf_Internal_Group *) shdr->contents; | |
633 | n_elt = shdr->sh_size / 4; | |
634 | while (--n_elt != 0) | |
635 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 636 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
637 | break; |
638 | if (n_elt != 0) | |
639 | { | |
dbb410c3 AM |
640 | /* Snarf the group name from other member, and |
641 | insert current section in circular list. */ | |
945906ff AM |
642 | elf_group_name (newsect) = elf_group_name (s); |
643 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
644 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
645 | } |
646 | else | |
647 | { | |
dbb410c3 AM |
648 | const char *gname; |
649 | ||
b885599b AM |
650 | gname = group_signature (abfd, shdr); |
651 | if (gname == NULL) | |
b34976b6 | 652 | return FALSE; |
945906ff | 653 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
654 | |
655 | /* Start a circular list with one element. */ | |
945906ff | 656 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 657 | } |
b885599b | 658 | |
9dce4196 AM |
659 | /* If the group section has been created, point to the |
660 | new member. */ | |
dbb410c3 | 661 | if (shdr->bfd_section != NULL) |
945906ff | 662 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 663 | |
dbb410c3 AM |
664 | i = num_group - 1; |
665 | break; | |
666 | } | |
667 | } | |
668 | } | |
669 | ||
945906ff | 670 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 671 | { |
d003868e AM |
672 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
673 | abfd, newsect); | |
dbb410c3 | 674 | } |
b34976b6 | 675 | return TRUE; |
dbb410c3 AM |
676 | } |
677 | ||
3d7f7666 | 678 | bfd_boolean |
dd863624 | 679 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
680 | { |
681 | unsigned int i; | |
682 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
683 | bfd_boolean result = TRUE; | |
dd863624 L |
684 | asection *s; |
685 | ||
686 | /* Process SHF_LINK_ORDER. */ | |
687 | for (s = abfd->sections; s != NULL; s = s->next) | |
688 | { | |
689 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
690 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
691 | { | |
692 | unsigned int elfsec = this_hdr->sh_link; | |
693 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
694 | not set the sh_link or sh_info fields. Hence we could | |
695 | get the situation where elfsec is 0. */ | |
696 | if (elfsec == 0) | |
697 | { | |
698 | const struct elf_backend_data *bed | |
699 | = get_elf_backend_data (abfd); | |
700 | if (bed->link_order_error_handler) | |
701 | bed->link_order_error_handler | |
702 | (_("%B: warning: sh_link not set for section `%A'"), | |
703 | abfd, s); | |
704 | } | |
705 | else | |
706 | { | |
25bbc984 L |
707 | asection *link; |
708 | ||
dd863624 | 709 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
710 | |
711 | /* PR 1991, 2008: | |
712 | Some strip/objcopy may leave an incorrect value in | |
713 | sh_link. We don't want to proceed. */ | |
714 | link = this_hdr->bfd_section; | |
715 | if (link == NULL) | |
716 | { | |
717 | (*_bfd_error_handler) | |
718 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
719 | s->owner, s, elfsec); | |
720 | result = FALSE; | |
721 | } | |
722 | ||
723 | elf_linked_to_section (s) = link; | |
dd863624 L |
724 | } |
725 | } | |
726 | } | |
3d7f7666 | 727 | |
dd863624 | 728 | /* Process section groups. */ |
3d7f7666 L |
729 | if (num_group == (unsigned) -1) |
730 | return result; | |
731 | ||
732 | for (i = 0; i < num_group; i++) | |
733 | { | |
734 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
735 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
736 | unsigned int n_elt = shdr->sh_size / 4; | |
737 | ||
738 | while (--n_elt != 0) | |
739 | if ((++idx)->shdr->bfd_section) | |
740 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
741 | else if (idx->shdr->sh_type == SHT_RELA | |
742 | || idx->shdr->sh_type == SHT_REL) | |
743 | /* We won't include relocation sections in section groups in | |
744 | output object files. We adjust the group section size here | |
745 | so that relocatable link will work correctly when | |
746 | relocation sections are in section group in input object | |
747 | files. */ | |
748 | shdr->bfd_section->size -= 4; | |
749 | else | |
750 | { | |
751 | /* There are some unknown sections in the group. */ | |
752 | (*_bfd_error_handler) | |
d003868e AM |
753 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
754 | abfd, | |
3d7f7666 | 755 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
756 | bfd_elf_string_from_elf_section (abfd, |
757 | (elf_elfheader (abfd) | |
758 | ->e_shstrndx), | |
759 | idx->shdr->sh_name), | |
3d7f7666 L |
760 | shdr->bfd_section->name); |
761 | result = FALSE; | |
762 | } | |
763 | } | |
764 | return result; | |
765 | } | |
766 | ||
72adc230 AM |
767 | bfd_boolean |
768 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
769 | { | |
770 | return elf_next_in_group (sec) != NULL; | |
771 | } | |
772 | ||
252b5132 RH |
773 | /* Make a BFD section from an ELF section. We store a pointer to the |
774 | BFD section in the bfd_section field of the header. */ | |
775 | ||
b34976b6 | 776 | bfd_boolean |
217aa764 AM |
777 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
778 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
779 | const char *name, |
780 | int shindex) | |
252b5132 RH |
781 | { |
782 | asection *newsect; | |
783 | flagword flags; | |
9c5bfbb7 | 784 | const struct elf_backend_data *bed; |
252b5132 RH |
785 | |
786 | if (hdr->bfd_section != NULL) | |
787 | { | |
788 | BFD_ASSERT (strcmp (name, | |
789 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 790 | return TRUE; |
252b5132 RH |
791 | } |
792 | ||
793 | newsect = bfd_make_section_anyway (abfd, name); | |
794 | if (newsect == NULL) | |
b34976b6 | 795 | return FALSE; |
252b5132 | 796 | |
1829f4b2 AM |
797 | hdr->bfd_section = newsect; |
798 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 799 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 800 | |
2f89ff8d L |
801 | /* Always use the real type/flags. */ |
802 | elf_section_type (newsect) = hdr->sh_type; | |
803 | elf_section_flags (newsect) = hdr->sh_flags; | |
804 | ||
252b5132 RH |
805 | newsect->filepos = hdr->sh_offset; |
806 | ||
807 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
808 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
809 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 810 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 811 | return FALSE; |
252b5132 RH |
812 | |
813 | flags = SEC_NO_FLAGS; | |
814 | if (hdr->sh_type != SHT_NOBITS) | |
815 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 816 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 817 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
818 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
819 | { | |
820 | flags |= SEC_ALLOC; | |
821 | if (hdr->sh_type != SHT_NOBITS) | |
822 | flags |= SEC_LOAD; | |
823 | } | |
824 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
825 | flags |= SEC_READONLY; | |
826 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
827 | flags |= SEC_CODE; | |
828 | else if ((flags & SEC_LOAD) != 0) | |
829 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
830 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
831 | { | |
832 | flags |= SEC_MERGE; | |
833 | newsect->entsize = hdr->sh_entsize; | |
834 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
835 | flags |= SEC_STRINGS; | |
836 | } | |
dbb410c3 AM |
837 | if (hdr->sh_flags & SHF_GROUP) |
838 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 839 | return FALSE; |
13ae64f3 JJ |
840 | if ((hdr->sh_flags & SHF_TLS) != 0) |
841 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 842 | |
3d2b39cf | 843 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 844 | { |
3d2b39cf L |
845 | /* The debugging sections appear to be recognized only by name, |
846 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
847 | static const struct | |
848 | { | |
849 | const char *name; | |
850 | int len; | |
851 | } debug_sections [] = | |
852 | { | |
0112cd26 | 853 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
854 | { NULL, 0 }, /* 'e' */ |
855 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 856 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
857 | { NULL, 0 }, /* 'h' */ |
858 | { NULL, 0 }, /* 'i' */ | |
859 | { NULL, 0 }, /* 'j' */ | |
860 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 861 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
862 | { NULL, 0 }, /* 'm' */ |
863 | { NULL, 0 }, /* 'n' */ | |
864 | { NULL, 0 }, /* 'o' */ | |
865 | { NULL, 0 }, /* 'p' */ | |
866 | { NULL, 0 }, /* 'q' */ | |
867 | { NULL, 0 }, /* 'r' */ | |
0112cd26 | 868 | { STRING_COMMA_LEN ("stab") } /* 's' */ |
3d2b39cf | 869 | }; |
08a40648 | 870 | |
3d2b39cf L |
871 | if (name [0] == '.') |
872 | { | |
873 | int i = name [1] - 'd'; | |
874 | if (i >= 0 | |
875 | && i < (int) ARRAY_SIZE (debug_sections) | |
876 | && debug_sections [i].name != NULL | |
877 | && strncmp (&name [1], debug_sections [i].name, | |
878 | debug_sections [i].len) == 0) | |
879 | flags |= SEC_DEBUGGING; | |
880 | } | |
881 | } | |
252b5132 RH |
882 | |
883 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
884 | only link a single copy of the section. This is used to support | |
885 | g++. g++ will emit each template expansion in its own section. | |
886 | The symbols will be defined as weak, so that multiple definitions | |
887 | are permitted. The GNU linker extension is to actually discard | |
888 | all but one of the sections. */ | |
0112cd26 | 889 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 890 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
891 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
892 | ||
fa152c49 JW |
893 | bed = get_elf_backend_data (abfd); |
894 | if (bed->elf_backend_section_flags) | |
895 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 896 | return FALSE; |
fa152c49 | 897 | |
252b5132 | 898 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 899 | return FALSE; |
252b5132 RH |
900 | |
901 | if ((flags & SEC_ALLOC) != 0) | |
902 | { | |
903 | Elf_Internal_Phdr *phdr; | |
904 | unsigned int i; | |
905 | ||
906 | /* Look through the phdrs to see if we need to adjust the lma. | |
08a40648 AM |
907 | If all the p_paddr fields are zero, we ignore them, since |
908 | some ELF linkers produce such output. */ | |
252b5132 RH |
909 | phdr = elf_tdata (abfd)->phdr; |
910 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
911 | { | |
912 | if (phdr->p_paddr != 0) | |
913 | break; | |
914 | } | |
915 | if (i < elf_elfheader (abfd)->e_phnum) | |
916 | { | |
917 | phdr = elf_tdata (abfd)->phdr; | |
918 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
919 | { | |
e0e8c97f NC |
920 | /* This section is part of this segment if its file |
921 | offset plus size lies within the segment's memory | |
922 | span and, if the section is loaded, the extent of the | |
47d9a591 | 923 | loaded data lies within the extent of the segment. |
bf36db18 NC |
924 | |
925 | Note - we used to check the p_paddr field as well, and | |
926 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 927 | though, as a perfectly valid initialised segment can |
bf36db18 | 928 | have a p_paddr of zero. Some architectures, eg ARM, |
08a40648 AM |
929 | place special significance on the address 0 and |
930 | executables need to be able to have a segment which | |
931 | covers this address. */ | |
252b5132 | 932 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
933 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
934 | && (hdr->sh_offset + hdr->sh_size | |
935 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 936 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
937 | || (hdr->sh_offset + hdr->sh_size |
938 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 939 | { |
dba143ef | 940 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
941 | newsect->lma = (phdr->p_paddr |
942 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
943 | else |
944 | /* We used to use the same adjustment for SEC_LOAD | |
945 | sections, but that doesn't work if the segment | |
946 | is packed with code from multiple VMAs. | |
947 | Instead we calculate the section LMA based on | |
948 | the segment LMA. It is assumed that the | |
949 | segment will contain sections with contiguous | |
950 | LMAs, even if the VMAs are not. */ | |
951 | newsect->lma = (phdr->p_paddr | |
952 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
953 | |
954 | /* With contiguous segments, we can't tell from file | |
955 | offsets whether a section with zero size should | |
956 | be placed at the end of one segment or the | |
957 | beginning of the next. Decide based on vaddr. */ | |
958 | if (hdr->sh_addr >= phdr->p_vaddr | |
959 | && (hdr->sh_addr + hdr->sh_size | |
960 | <= phdr->p_vaddr + phdr->p_memsz)) | |
961 | break; | |
252b5132 RH |
962 | } |
963 | } | |
964 | } | |
965 | } | |
966 | ||
b34976b6 | 967 | return TRUE; |
252b5132 RH |
968 | } |
969 | ||
970 | /* | |
971 | INTERNAL_FUNCTION | |
972 | bfd_elf_find_section | |
973 | ||
974 | SYNOPSIS | |
975 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
976 | ||
977 | DESCRIPTION | |
978 | Helper functions for GDB to locate the string tables. | |
979 | Since BFD hides string tables from callers, GDB needs to use an | |
980 | internal hook to find them. Sun's .stabstr, in particular, | |
981 | isn't even pointed to by the .stab section, so ordinary | |
982 | mechanisms wouldn't work to find it, even if we had some. | |
983 | */ | |
984 | ||
985 | struct elf_internal_shdr * | |
217aa764 | 986 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
987 | { |
988 | Elf_Internal_Shdr **i_shdrp; | |
989 | char *shstrtab; | |
990 | unsigned int max; | |
991 | unsigned int i; | |
992 | ||
993 | i_shdrp = elf_elfsections (abfd); | |
994 | if (i_shdrp != NULL) | |
995 | { | |
9ad5cbcf AM |
996 | shstrtab = bfd_elf_get_str_section (abfd, |
997 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
998 | if (shstrtab != NULL) |
999 | { | |
9ad5cbcf | 1000 | max = elf_numsections (abfd); |
252b5132 RH |
1001 | for (i = 1; i < max; i++) |
1002 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
1003 | return i_shdrp[i]; | |
1004 | } | |
1005 | } | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | const char *const bfd_elf_section_type_names[] = { | |
1010 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1011 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1012 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1013 | }; | |
1014 | ||
1049f94e | 1015 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1016 | output, and the reloc is against an external symbol, and nothing |
1017 | has given us any additional addend, the resulting reloc will also | |
1018 | be against the same symbol. In such a case, we don't want to | |
1019 | change anything about the way the reloc is handled, since it will | |
1020 | all be done at final link time. Rather than put special case code | |
1021 | into bfd_perform_relocation, all the reloc types use this howto | |
1022 | function. It just short circuits the reloc if producing | |
1049f94e | 1023 | relocatable output against an external symbol. */ |
252b5132 | 1024 | |
252b5132 | 1025 | bfd_reloc_status_type |
217aa764 AM |
1026 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1027 | arelent *reloc_entry, | |
1028 | asymbol *symbol, | |
1029 | void *data ATTRIBUTE_UNUSED, | |
1030 | asection *input_section, | |
1031 | bfd *output_bfd, | |
1032 | char **error_message ATTRIBUTE_UNUSED) | |
1033 | { | |
1034 | if (output_bfd != NULL | |
252b5132 RH |
1035 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1036 | && (! reloc_entry->howto->partial_inplace | |
1037 | || reloc_entry->addend == 0)) | |
1038 | { | |
1039 | reloc_entry->address += input_section->output_offset; | |
1040 | return bfd_reloc_ok; | |
1041 | } | |
1042 | ||
1043 | return bfd_reloc_continue; | |
1044 | } | |
1045 | \f | |
d3c456e9 JJ |
1046 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
1047 | ||
1048 | static void | |
217aa764 AM |
1049 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
1050 | asection *sec) | |
d3c456e9 | 1051 | { |
68bfbfcc AM |
1052 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
1053 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
1054 | } |
1055 | ||
8550eb6e JJ |
1056 | /* Finish SHF_MERGE section merging. */ |
1057 | ||
b34976b6 | 1058 | bfd_boolean |
217aa764 | 1059 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 1060 | { |
57ceae94 AM |
1061 | bfd *ibfd; |
1062 | asection *sec; | |
1063 | ||
0eddce27 | 1064 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 1065 | return FALSE; |
57ceae94 AM |
1066 | |
1067 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
1068 | if ((ibfd->flags & DYNAMIC) == 0) | |
1069 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1070 | if ((sec->flags & SEC_MERGE) != 0 | |
1071 | && !bfd_is_abs_section (sec->output_section)) | |
1072 | { | |
1073 | struct bfd_elf_section_data *secdata; | |
1074 | ||
1075 | secdata = elf_section_data (sec); | |
1076 | if (! _bfd_add_merge_section (abfd, | |
1077 | &elf_hash_table (info)->merge_info, | |
1078 | sec, &secdata->sec_info)) | |
1079 | return FALSE; | |
1080 | else if (secdata->sec_info) | |
1081 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
1082 | } | |
1083 | ||
1084 | if (elf_hash_table (info)->merge_info != NULL) | |
1085 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 1086 | merge_sections_remove_hook); |
b34976b6 | 1087 | return TRUE; |
8550eb6e | 1088 | } |
2d653fc7 AM |
1089 | |
1090 | void | |
217aa764 | 1091 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1092 | { |
1093 | sec->output_section = bfd_abs_section_ptr; | |
1094 | sec->output_offset = sec->vma; | |
0eddce27 | 1095 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1096 | return; |
1097 | ||
68bfbfcc | 1098 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1099 | } |
8550eb6e | 1100 | \f |
0ac4564e L |
1101 | /* Copy the program header and other data from one object module to |
1102 | another. */ | |
252b5132 | 1103 | |
b34976b6 | 1104 | bfd_boolean |
217aa764 | 1105 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1106 | { |
1107 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1108 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1109 | return TRUE; |
2d502050 L |
1110 | |
1111 | BFD_ASSERT (!elf_flags_init (obfd) | |
1112 | || (elf_elfheader (obfd)->e_flags | |
1113 | == elf_elfheader (ibfd)->e_flags)); | |
1114 | ||
0ac4564e | 1115 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1116 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1117 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1118 | |
1119 | /* Copy object attributes. */ | |
1120 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
1121 | ||
b34976b6 | 1122 | return TRUE; |
2d502050 L |
1123 | } |
1124 | ||
cedc298e L |
1125 | static const char * |
1126 | get_segment_type (unsigned int p_type) | |
1127 | { | |
1128 | const char *pt; | |
1129 | switch (p_type) | |
1130 | { | |
1131 | case PT_NULL: pt = "NULL"; break; | |
1132 | case PT_LOAD: pt = "LOAD"; break; | |
1133 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1134 | case PT_INTERP: pt = "INTERP"; break; | |
1135 | case PT_NOTE: pt = "NOTE"; break; | |
1136 | case PT_SHLIB: pt = "SHLIB"; break; | |
1137 | case PT_PHDR: pt = "PHDR"; break; | |
1138 | case PT_TLS: pt = "TLS"; break; | |
1139 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
1140 | case PT_GNU_STACK: pt = "STACK"; break; | |
1141 | case PT_GNU_RELRO: pt = "RELRO"; break; | |
1142 | default: pt = NULL; break; | |
1143 | } | |
1144 | return pt; | |
1145 | } | |
1146 | ||
f0b79d91 L |
1147 | /* Print out the program headers. */ |
1148 | ||
b34976b6 | 1149 | bfd_boolean |
217aa764 | 1150 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1151 | { |
217aa764 | 1152 | FILE *f = farg; |
252b5132 RH |
1153 | Elf_Internal_Phdr *p; |
1154 | asection *s; | |
1155 | bfd_byte *dynbuf = NULL; | |
1156 | ||
1157 | p = elf_tdata (abfd)->phdr; | |
1158 | if (p != NULL) | |
1159 | { | |
1160 | unsigned int i, c; | |
1161 | ||
1162 | fprintf (f, _("\nProgram Header:\n")); | |
1163 | c = elf_elfheader (abfd)->e_phnum; | |
1164 | for (i = 0; i < c; i++, p++) | |
1165 | { | |
cedc298e | 1166 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1167 | char buf[20]; |
1168 | ||
cedc298e | 1169 | if (pt == NULL) |
252b5132 | 1170 | { |
cedc298e L |
1171 | sprintf (buf, "0x%lx", p->p_type); |
1172 | pt = buf; | |
252b5132 | 1173 | } |
dc810e39 | 1174 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1175 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1176 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1177 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1178 | fprintf (f, " paddr 0x"); |
60b89a18 | 1179 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1180 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1181 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1182 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1183 | fprintf (f, " memsz 0x"); |
60b89a18 | 1184 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1185 | fprintf (f, " flags %c%c%c", |
1186 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1187 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1188 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1189 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1190 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1191 | fprintf (f, "\n"); |
1192 | } | |
1193 | } | |
1194 | ||
1195 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1196 | if (s != NULL) | |
1197 | { | |
1198 | int elfsec; | |
dc810e39 | 1199 | unsigned long shlink; |
252b5132 RH |
1200 | bfd_byte *extdyn, *extdynend; |
1201 | size_t extdynsize; | |
217aa764 | 1202 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1203 | |
1204 | fprintf (f, _("\nDynamic Section:\n")); | |
1205 | ||
eea6121a | 1206 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1207 | goto error_return; |
1208 | ||
1209 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1210 | if (elfsec == -1) | |
1211 | goto error_return; | |
dc810e39 | 1212 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1213 | |
1214 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1215 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1216 | ||
1217 | extdyn = dynbuf; | |
eea6121a | 1218 | extdynend = extdyn + s->size; |
252b5132 RH |
1219 | for (; extdyn < extdynend; extdyn += extdynsize) |
1220 | { | |
1221 | Elf_Internal_Dyn dyn; | |
1222 | const char *name; | |
1223 | char ab[20]; | |
b34976b6 | 1224 | bfd_boolean stringp; |
252b5132 | 1225 | |
217aa764 | 1226 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1227 | |
1228 | if (dyn.d_tag == DT_NULL) | |
1229 | break; | |
1230 | ||
b34976b6 | 1231 | stringp = FALSE; |
252b5132 RH |
1232 | switch (dyn.d_tag) |
1233 | { | |
1234 | default: | |
1235 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1236 | name = ab; | |
1237 | break; | |
1238 | ||
b34976b6 | 1239 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1240 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1241 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1242 | case DT_HASH: name = "HASH"; break; | |
1243 | case DT_STRTAB: name = "STRTAB"; break; | |
1244 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1245 | case DT_RELA: name = "RELA"; break; | |
1246 | case DT_RELASZ: name = "RELASZ"; break; | |
1247 | case DT_RELAENT: name = "RELAENT"; break; | |
1248 | case DT_STRSZ: name = "STRSZ"; break; | |
1249 | case DT_SYMENT: name = "SYMENT"; break; | |
1250 | case DT_INIT: name = "INIT"; break; | |
1251 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1252 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1253 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1254 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1255 | case DT_REL: name = "REL"; break; | |
1256 | case DT_RELSZ: name = "RELSZ"; break; | |
1257 | case DT_RELENT: name = "RELENT"; break; | |
1258 | case DT_PLTREL: name = "PLTREL"; break; | |
1259 | case DT_DEBUG: name = "DEBUG"; break; | |
1260 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1261 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1262 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1263 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1264 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1265 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1266 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1267 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1268 | case DT_FLAGS: name = "FLAGS"; break; |
1269 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1270 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1271 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1272 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1273 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1274 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1275 | case DT_FEATURE: name = "FEATURE"; break; | |
1276 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1277 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1278 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1279 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1280 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1281 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1282 | case DT_PLTPAD: name = "PLTPAD"; break; |
1283 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1284 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1285 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1286 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1287 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1288 | case DT_VERSYM: name = "VERSYM"; break; |
1289 | case DT_VERDEF: name = "VERDEF"; break; | |
1290 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1291 | case DT_VERNEED: name = "VERNEED"; break; | |
1292 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1293 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1294 | case DT_USED: name = "USED"; break; |
b34976b6 | 1295 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1296 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1297 | } |
1298 | ||
1299 | fprintf (f, " %-11s ", name); | |
1300 | if (! stringp) | |
1301 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1302 | else | |
1303 | { | |
1304 | const char *string; | |
dc810e39 | 1305 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1306 | |
dc810e39 | 1307 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1308 | if (string == NULL) |
1309 | goto error_return; | |
1310 | fprintf (f, "%s", string); | |
1311 | } | |
1312 | fprintf (f, "\n"); | |
1313 | } | |
1314 | ||
1315 | free (dynbuf); | |
1316 | dynbuf = NULL; | |
1317 | } | |
1318 | ||
1319 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1320 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1321 | { | |
fc0e6df6 | 1322 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1323 | return FALSE; |
252b5132 RH |
1324 | } |
1325 | ||
1326 | if (elf_dynverdef (abfd) != 0) | |
1327 | { | |
1328 | Elf_Internal_Verdef *t; | |
1329 | ||
1330 | fprintf (f, _("\nVersion definitions:\n")); | |
1331 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1332 | { | |
1333 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1334 | t->vd_flags, t->vd_hash, |
1335 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1336 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1337 | { |
1338 | Elf_Internal_Verdaux *a; | |
1339 | ||
1340 | fprintf (f, "\t"); | |
1341 | for (a = t->vd_auxptr->vda_nextptr; | |
1342 | a != NULL; | |
1343 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1344 | fprintf (f, "%s ", |
1345 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1346 | fprintf (f, "\n"); |
1347 | } | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | if (elf_dynverref (abfd) != 0) | |
1352 | { | |
1353 | Elf_Internal_Verneed *t; | |
1354 | ||
1355 | fprintf (f, _("\nVersion References:\n")); | |
1356 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1357 | { | |
1358 | Elf_Internal_Vernaux *a; | |
1359 | ||
d0fb9a8d JJ |
1360 | fprintf (f, _(" required from %s:\n"), |
1361 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1362 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1363 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1364 | a->vna_flags, a->vna_other, |
1365 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1366 | } |
1367 | } | |
1368 | ||
b34976b6 | 1369 | return TRUE; |
252b5132 RH |
1370 | |
1371 | error_return: | |
1372 | if (dynbuf != NULL) | |
1373 | free (dynbuf); | |
b34976b6 | 1374 | return FALSE; |
252b5132 RH |
1375 | } |
1376 | ||
1377 | /* Display ELF-specific fields of a symbol. */ | |
1378 | ||
1379 | void | |
217aa764 AM |
1380 | bfd_elf_print_symbol (bfd *abfd, |
1381 | void *filep, | |
1382 | asymbol *symbol, | |
1383 | bfd_print_symbol_type how) | |
252b5132 | 1384 | { |
217aa764 | 1385 | FILE *file = filep; |
252b5132 RH |
1386 | switch (how) |
1387 | { | |
1388 | case bfd_print_symbol_name: | |
1389 | fprintf (file, "%s", symbol->name); | |
1390 | break; | |
1391 | case bfd_print_symbol_more: | |
1392 | fprintf (file, "elf "); | |
60b89a18 | 1393 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1394 | fprintf (file, " %lx", (long) symbol->flags); |
1395 | break; | |
1396 | case bfd_print_symbol_all: | |
1397 | { | |
4e8a9624 AM |
1398 | const char *section_name; |
1399 | const char *name = NULL; | |
9c5bfbb7 | 1400 | const struct elf_backend_data *bed; |
7a13edea | 1401 | unsigned char st_other; |
dbb410c3 | 1402 | bfd_vma val; |
c044fabd | 1403 | |
252b5132 | 1404 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1405 | |
1406 | bed = get_elf_backend_data (abfd); | |
1407 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1408 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1409 | |
1410 | if (name == NULL) | |
1411 | { | |
7ee38065 | 1412 | name = symbol->name; |
217aa764 | 1413 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1414 | } |
1415 | ||
252b5132 RH |
1416 | fprintf (file, " %s\t", section_name); |
1417 | /* Print the "other" value for a symbol. For common symbols, | |
1418 | we've already printed the size; now print the alignment. | |
1419 | For other symbols, we have no specified alignment, and | |
1420 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1421 | if (bfd_is_com_section (symbol->section)) |
1422 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1423 | else | |
1424 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1425 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1426 | |
1427 | /* If we have version information, print it. */ | |
1428 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1429 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1430 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1431 | { | |
1432 | unsigned int vernum; | |
1433 | const char *version_string; | |
1434 | ||
1435 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1436 | ||
1437 | if (vernum == 0) | |
1438 | version_string = ""; | |
1439 | else if (vernum == 1) | |
1440 | version_string = "Base"; | |
1441 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1442 | version_string = | |
1443 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1444 | else | |
1445 | { | |
1446 | Elf_Internal_Verneed *t; | |
1447 | ||
1448 | version_string = ""; | |
1449 | for (t = elf_tdata (abfd)->verref; | |
1450 | t != NULL; | |
1451 | t = t->vn_nextref) | |
1452 | { | |
1453 | Elf_Internal_Vernaux *a; | |
1454 | ||
1455 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1456 | { | |
1457 | if (a->vna_other == vernum) | |
1458 | { | |
1459 | version_string = a->vna_nodename; | |
1460 | break; | |
1461 | } | |
1462 | } | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1467 | fprintf (file, " %-11s", version_string); | |
1468 | else | |
1469 | { | |
1470 | int i; | |
1471 | ||
1472 | fprintf (file, " (%s)", version_string); | |
1473 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1474 | putc (' ', file); | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1479 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1480 | |
7a13edea NC |
1481 | switch (st_other) |
1482 | { | |
1483 | case 0: break; | |
1484 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1485 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1486 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1487 | default: | |
1488 | /* Some other non-defined flags are also present, so print | |
1489 | everything hex. */ | |
1490 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1491 | } | |
252b5132 | 1492 | |
587ff49e | 1493 | fprintf (file, " %s", name); |
252b5132 RH |
1494 | } |
1495 | break; | |
1496 | } | |
1497 | } | |
1498 | \f | |
1499 | /* Create an entry in an ELF linker hash table. */ | |
1500 | ||
1501 | struct bfd_hash_entry * | |
217aa764 AM |
1502 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1503 | struct bfd_hash_table *table, | |
1504 | const char *string) | |
252b5132 | 1505 | { |
252b5132 RH |
1506 | /* Allocate the structure if it has not already been allocated by a |
1507 | subclass. */ | |
51b64d56 AM |
1508 | if (entry == NULL) |
1509 | { | |
1510 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1511 | if (entry == NULL) | |
1512 | return entry; | |
1513 | } | |
252b5132 RH |
1514 | |
1515 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1516 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1517 | if (entry != NULL) | |
252b5132 | 1518 | { |
51b64d56 AM |
1519 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1520 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1521 | ||
252b5132 RH |
1522 | /* Set local fields. */ |
1523 | ret->indx = -1; | |
252b5132 | 1524 | ret->dynindx = -1; |
a6aa5195 AM |
1525 | ret->got = htab->init_got_refcount; |
1526 | ret->plt = htab->init_plt_refcount; | |
f6e332e6 AM |
1527 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) |
1528 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 | 1529 | /* Assume that we have been called by a non-ELF symbol reader. |
08a40648 AM |
1530 | This flag is then reset by the code which reads an ELF input |
1531 | file. This ensures that a symbol created by a non-ELF symbol | |
1532 | reader will have the flag set correctly. */ | |
f5385ebf | 1533 | ret->non_elf = 1; |
252b5132 RH |
1534 | } |
1535 | ||
51b64d56 | 1536 | return entry; |
252b5132 RH |
1537 | } |
1538 | ||
2920b85c | 1539 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1540 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1541 | |
c61b8717 | 1542 | void |
fcfa13d2 | 1543 | _bfd_elf_link_hash_copy_indirect (struct bfd_link_info *info, |
217aa764 AM |
1544 | struct elf_link_hash_entry *dir, |
1545 | struct elf_link_hash_entry *ind) | |
2920b85c | 1546 | { |
fcfa13d2 | 1547 | struct elf_link_hash_table *htab; |
3c3e9281 | 1548 | |
2920b85c RH |
1549 | /* Copy down any references that we may have already seen to the |
1550 | symbol which just became indirect. */ | |
1551 | ||
f5385ebf AM |
1552 | dir->ref_dynamic |= ind->ref_dynamic; |
1553 | dir->ref_regular |= ind->ref_regular; | |
1554 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1555 | dir->non_got_ref |= ind->non_got_ref; | |
1556 | dir->needs_plt |= ind->needs_plt; | |
1557 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1558 | |
1e370bd2 | 1559 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1560 | return; |
1561 | ||
51b64d56 | 1562 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1563 | These may have been already set up by a check_relocs routine. */ |
fcfa13d2 AM |
1564 | htab = elf_hash_table (info); |
1565 | if (ind->got.refcount > htab->init_got_refcount.refcount) | |
2920b85c | 1566 | { |
fcfa13d2 AM |
1567 | if (dir->got.refcount < 0) |
1568 | dir->got.refcount = 0; | |
1569 | dir->got.refcount += ind->got.refcount; | |
1570 | ind->got.refcount = htab->init_got_refcount.refcount; | |
2920b85c | 1571 | } |
2920b85c | 1572 | |
fcfa13d2 | 1573 | if (ind->plt.refcount > htab->init_plt_refcount.refcount) |
2920b85c | 1574 | { |
fcfa13d2 AM |
1575 | if (dir->plt.refcount < 0) |
1576 | dir->plt.refcount = 0; | |
1577 | dir->plt.refcount += ind->plt.refcount; | |
1578 | ind->plt.refcount = htab->init_plt_refcount.refcount; | |
2920b85c | 1579 | } |
2920b85c | 1580 | |
fcfa13d2 | 1581 | if (ind->dynindx != -1) |
2920b85c | 1582 | { |
fcfa13d2 AM |
1583 | if (dir->dynindx != -1) |
1584 | _bfd_elf_strtab_delref (htab->dynstr, dir->dynstr_index); | |
2920b85c RH |
1585 | dir->dynindx = ind->dynindx; |
1586 | dir->dynstr_index = ind->dynstr_index; | |
1587 | ind->dynindx = -1; | |
1588 | ind->dynstr_index = 0; | |
1589 | } | |
2920b85c RH |
1590 | } |
1591 | ||
c61b8717 | 1592 | void |
217aa764 AM |
1593 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1594 | struct elf_link_hash_entry *h, | |
1595 | bfd_boolean force_local) | |
2920b85c | 1596 | { |
a6aa5195 | 1597 | h->plt = elf_hash_table (info)->init_plt_offset; |
f5385ebf | 1598 | h->needs_plt = 0; |
e5094212 AM |
1599 | if (force_local) |
1600 | { | |
f5385ebf | 1601 | h->forced_local = 1; |
e5094212 AM |
1602 | if (h->dynindx != -1) |
1603 | { | |
1604 | h->dynindx = -1; | |
1605 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1606 | h->dynstr_index); | |
1607 | } | |
1608 | } | |
2920b85c RH |
1609 | } |
1610 | ||
252b5132 RH |
1611 | /* Initialize an ELF linker hash table. */ |
1612 | ||
b34976b6 | 1613 | bfd_boolean |
217aa764 AM |
1614 | _bfd_elf_link_hash_table_init |
1615 | (struct elf_link_hash_table *table, | |
1616 | bfd *abfd, | |
1617 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1618 | struct bfd_hash_table *, | |
66eb6687 AM |
1619 | const char *), |
1620 | unsigned int entsize) | |
252b5132 | 1621 | { |
b34976b6 | 1622 | bfd_boolean ret; |
a6aa5195 | 1623 | int can_refcount = get_elf_backend_data (abfd)->can_refcount; |
8ea2e4bd | 1624 | |
effdf42a | 1625 | memset (table, 0, sizeof * table); |
a6aa5195 AM |
1626 | table->init_got_refcount.refcount = can_refcount - 1; |
1627 | table->init_plt_refcount.refcount = can_refcount - 1; | |
1628 | table->init_got_offset.offset = -(bfd_vma) 1; | |
1629 | table->init_plt_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1630 | /* The first dynamic symbol is a dummy. */ |
1631 | table->dynsymcount = 1; | |
73722af0 | 1632 | |
66eb6687 | 1633 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
8ea2e4bd NC |
1634 | table->root.type = bfd_link_elf_hash_table; |
1635 | ||
1636 | return ret; | |
252b5132 RH |
1637 | } |
1638 | ||
1639 | /* Create an ELF linker hash table. */ | |
1640 | ||
1641 | struct bfd_link_hash_table * | |
217aa764 | 1642 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1643 | { |
1644 | struct elf_link_hash_table *ret; | |
dc810e39 | 1645 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1646 | |
217aa764 AM |
1647 | ret = bfd_malloc (amt); |
1648 | if (ret == NULL) | |
252b5132 RH |
1649 | return NULL; |
1650 | ||
66eb6687 AM |
1651 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc, |
1652 | sizeof (struct elf_link_hash_entry))) | |
252b5132 | 1653 | { |
e2d34d7d | 1654 | free (ret); |
252b5132 RH |
1655 | return NULL; |
1656 | } | |
1657 | ||
1658 | return &ret->root; | |
1659 | } | |
1660 | ||
1661 | /* This is a hook for the ELF emulation code in the generic linker to | |
1662 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1663 | entry for a dynamic object. */ |
252b5132 RH |
1664 | |
1665 | void | |
217aa764 | 1666 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1667 | { |
1668 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1669 | && bfd_get_format (abfd) == bfd_object) | |
1670 | elf_dt_name (abfd) = name; | |
1671 | } | |
1672 | ||
e56f61be L |
1673 | int |
1674 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1675 | { | |
1676 | int lib_class; | |
1677 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1678 | && bfd_get_format (abfd) == bfd_object) | |
1679 | lib_class = elf_dyn_lib_class (abfd); | |
1680 | else | |
1681 | lib_class = 0; | |
1682 | return lib_class; | |
1683 | } | |
1684 | ||
74816898 | 1685 | void |
23fe9577 | 1686 | bfd_elf_set_dyn_lib_class (bfd *abfd, enum dynamic_lib_link_class lib_class) |
74816898 L |
1687 | { |
1688 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1689 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1690 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1691 | } |
1692 | ||
252b5132 RH |
1693 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1694 | the linker ELF emulation code. */ | |
1695 | ||
1696 | struct bfd_link_needed_list * | |
217aa764 AM |
1697 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1698 | struct bfd_link_info *info) | |
252b5132 | 1699 | { |
0eddce27 | 1700 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1701 | return NULL; |
1702 | return elf_hash_table (info)->needed; | |
1703 | } | |
1704 | ||
a963dc6a L |
1705 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1706 | hook for the linker ELF emulation code. */ | |
1707 | ||
1708 | struct bfd_link_needed_list * | |
217aa764 AM |
1709 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1710 | struct bfd_link_info *info) | |
a963dc6a | 1711 | { |
0eddce27 | 1712 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1713 | return NULL; |
1714 | return elf_hash_table (info)->runpath; | |
1715 | } | |
1716 | ||
252b5132 RH |
1717 | /* Get the name actually used for a dynamic object for a link. This |
1718 | is the SONAME entry if there is one. Otherwise, it is the string | |
1719 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1720 | ||
1721 | const char * | |
217aa764 | 1722 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1723 | { |
1724 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1725 | && bfd_get_format (abfd) == bfd_object) | |
1726 | return elf_dt_name (abfd); | |
1727 | return NULL; | |
1728 | } | |
1729 | ||
1730 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1731 | the ELF linker emulation code. */ | |
1732 | ||
b34976b6 | 1733 | bfd_boolean |
217aa764 AM |
1734 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1735 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1736 | { |
1737 | asection *s; | |
1738 | bfd_byte *dynbuf = NULL; | |
1739 | int elfsec; | |
dc810e39 | 1740 | unsigned long shlink; |
252b5132 RH |
1741 | bfd_byte *extdyn, *extdynend; |
1742 | size_t extdynsize; | |
217aa764 | 1743 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1744 | |
1745 | *pneeded = NULL; | |
1746 | ||
1747 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1748 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1749 | return TRUE; |
252b5132 RH |
1750 | |
1751 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1752 | if (s == NULL || s->size == 0) |
b34976b6 | 1753 | return TRUE; |
252b5132 | 1754 | |
eea6121a | 1755 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1756 | goto error_return; |
1757 | ||
1758 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1759 | if (elfsec == -1) | |
1760 | goto error_return; | |
1761 | ||
dc810e39 | 1762 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1763 | |
1764 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1765 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1766 | ||
1767 | extdyn = dynbuf; | |
eea6121a | 1768 | extdynend = extdyn + s->size; |
252b5132 RH |
1769 | for (; extdyn < extdynend; extdyn += extdynsize) |
1770 | { | |
1771 | Elf_Internal_Dyn dyn; | |
1772 | ||
217aa764 | 1773 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1774 | |
1775 | if (dyn.d_tag == DT_NULL) | |
1776 | break; | |
1777 | ||
1778 | if (dyn.d_tag == DT_NEEDED) | |
1779 | { | |
1780 | const char *string; | |
1781 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1782 | unsigned int tagv = dyn.d_un.d_val; |
1783 | bfd_size_type amt; | |
252b5132 | 1784 | |
dc810e39 | 1785 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1786 | if (string == NULL) |
1787 | goto error_return; | |
1788 | ||
dc810e39 | 1789 | amt = sizeof *l; |
217aa764 | 1790 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1791 | if (l == NULL) |
1792 | goto error_return; | |
1793 | ||
1794 | l->by = abfd; | |
1795 | l->name = string; | |
1796 | l->next = *pneeded; | |
1797 | *pneeded = l; | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | free (dynbuf); | |
1802 | ||
b34976b6 | 1803 | return TRUE; |
252b5132 RH |
1804 | |
1805 | error_return: | |
1806 | if (dynbuf != NULL) | |
1807 | free (dynbuf); | |
b34976b6 | 1808 | return FALSE; |
252b5132 RH |
1809 | } |
1810 | \f | |
1811 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1812 | ||
1813 | struct bfd_strtab_hash * | |
217aa764 | 1814 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1815 | { |
1816 | struct bfd_strtab_hash *ret; | |
1817 | ||
1818 | ret = _bfd_stringtab_init (); | |
1819 | if (ret != NULL) | |
1820 | { | |
1821 | bfd_size_type loc; | |
1822 | ||
b34976b6 | 1823 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1824 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1825 | if (loc == (bfd_size_type) -1) | |
1826 | { | |
1827 | _bfd_stringtab_free (ret); | |
1828 | ret = NULL; | |
1829 | } | |
1830 | } | |
1831 | return ret; | |
1832 | } | |
1833 | \f | |
1834 | /* ELF .o/exec file reading */ | |
1835 | ||
c044fabd | 1836 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1837 | |
b34976b6 | 1838 | bfd_boolean |
217aa764 | 1839 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1840 | { |
1841 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1842 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1843 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1844 | const char *name; |
252b5132 | 1845 | |
1b3a8575 AM |
1846 | name = bfd_elf_string_from_elf_section (abfd, |
1847 | elf_elfheader (abfd)->e_shstrndx, | |
1848 | hdr->sh_name); | |
933d961a JJ |
1849 | if (name == NULL) |
1850 | return FALSE; | |
252b5132 RH |
1851 | |
1852 | switch (hdr->sh_type) | |
1853 | { | |
1854 | case SHT_NULL: | |
1855 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1856 | return TRUE; |
252b5132 RH |
1857 | |
1858 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1859 | case SHT_NOBITS: /* .bss section. */ |
1860 | case SHT_HASH: /* .hash section. */ | |
1861 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1862 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1863 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1864 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1865 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1866 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1867 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1868 | |
797fc050 | 1869 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1870 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1871 | return FALSE; |
8e0ed13f NC |
1872 | if (hdr->sh_link > elf_numsections (abfd) |
1873 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1874 | return FALSE; | |
797fc050 AM |
1875 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1876 | { | |
1877 | Elf_Internal_Shdr *dynsymhdr; | |
1878 | ||
1879 | /* The shared libraries distributed with hpux11 have a bogus | |
1880 | sh_link field for the ".dynamic" section. Find the | |
1881 | string table for the ".dynsym" section instead. */ | |
1882 | if (elf_dynsymtab (abfd) != 0) | |
1883 | { | |
1884 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1885 | hdr->sh_link = dynsymhdr->sh_link; | |
1886 | } | |
1887 | else | |
1888 | { | |
1889 | unsigned int i, num_sec; | |
1890 | ||
1891 | num_sec = elf_numsections (abfd); | |
1892 | for (i = 1; i < num_sec; i++) | |
1893 | { | |
1894 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1895 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1896 | { | |
1897 | hdr->sh_link = dynsymhdr->sh_link; | |
1898 | break; | |
1899 | } | |
1900 | } | |
1901 | } | |
1902 | } | |
1903 | break; | |
1904 | ||
252b5132 RH |
1905 | case SHT_SYMTAB: /* A symbol table */ |
1906 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1907 | return TRUE; |
252b5132 | 1908 | |
a50b2160 JJ |
1909 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1910 | return FALSE; | |
252b5132 RH |
1911 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1912 | elf_onesymtab (abfd) = shindex; | |
1913 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1914 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1915 | abfd->flags |= HAS_SYMS; | |
1916 | ||
1917 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1918 | SHF_ALLOC is set, and this is a shared object, then we also |
1919 | treat this section as a BFD section. We can not base the | |
1920 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1921 | set in a relocatable object file, which would confuse the | |
1922 | linker. */ | |
252b5132 RH |
1923 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1924 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1925 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1926 | shindex)) | |
b34976b6 | 1927 | return FALSE; |
252b5132 | 1928 | |
1b3a8575 AM |
1929 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1930 | can't read symbols without that section loaded as well. It | |
1931 | is most likely specified by the next section header. */ | |
1932 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1933 | { | |
1934 | unsigned int i, num_sec; | |
1935 | ||
1936 | num_sec = elf_numsections (abfd); | |
1937 | for (i = shindex + 1; i < num_sec; i++) | |
1938 | { | |
1939 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1940 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1941 | && hdr2->sh_link == shindex) | |
1942 | break; | |
1943 | } | |
1944 | if (i == num_sec) | |
1945 | for (i = 1; i < shindex; i++) | |
1946 | { | |
1947 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1948 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1949 | && hdr2->sh_link == shindex) | |
1950 | break; | |
1951 | } | |
1952 | if (i != shindex) | |
1953 | return bfd_section_from_shdr (abfd, i); | |
1954 | } | |
b34976b6 | 1955 | return TRUE; |
252b5132 RH |
1956 | |
1957 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1958 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1959 | return TRUE; |
252b5132 | 1960 | |
a50b2160 JJ |
1961 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1962 | return FALSE; | |
252b5132 RH |
1963 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1964 | elf_dynsymtab (abfd) = shindex; | |
1965 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1966 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1967 | abfd->flags |= HAS_SYMS; | |
1968 | ||
1969 | /* Besides being a symbol table, we also treat this as a regular | |
1970 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1971 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1972 | |
9ad5cbcf AM |
1973 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1974 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1975 | return TRUE; |
9ad5cbcf | 1976 | |
1b3a8575 | 1977 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1978 | elf_symtab_shndx (abfd) = shindex; |
1979 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1980 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1981 | return TRUE; |
9ad5cbcf | 1982 | |
252b5132 RH |
1983 | case SHT_STRTAB: /* A string table */ |
1984 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1985 | return TRUE; |
252b5132 RH |
1986 | if (ehdr->e_shstrndx == shindex) |
1987 | { | |
1988 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1989 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1990 | return TRUE; |
252b5132 | 1991 | } |
1b3a8575 AM |
1992 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1993 | { | |
1994 | symtab_strtab: | |
1995 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1996 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1997 | return TRUE; | |
1998 | } | |
1999 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
2000 | { | |
2001 | dynsymtab_strtab: | |
2002 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
2003 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
2004 | elf_elfsections (abfd)[shindex] = hdr; | |
2005 | /* We also treat this as a regular section, so that objcopy | |
2006 | can handle it. */ | |
6dc132d9 L |
2007 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2008 | shindex); | |
1b3a8575 | 2009 | } |
252b5132 | 2010 | |
1b3a8575 AM |
2011 | /* If the string table isn't one of the above, then treat it as a |
2012 | regular section. We need to scan all the headers to be sure, | |
2013 | just in case this strtab section appeared before the above. */ | |
2014 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
2015 | { | |
2016 | unsigned int i, num_sec; | |
252b5132 | 2017 | |
1b3a8575 AM |
2018 | num_sec = elf_numsections (abfd); |
2019 | for (i = 1; i < num_sec; i++) | |
2020 | { | |
2021 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2022 | if (hdr2->sh_link == shindex) | |
2023 | { | |
933d961a JJ |
2024 | /* Prevent endless recursion on broken objects. */ |
2025 | if (i == shindex) | |
2026 | return FALSE; | |
1b3a8575 AM |
2027 | if (! bfd_section_from_shdr (abfd, i)) |
2028 | return FALSE; | |
2029 | if (elf_onesymtab (abfd) == i) | |
2030 | goto symtab_strtab; | |
2031 | if (elf_dynsymtab (abfd) == i) | |
2032 | goto dynsymtab_strtab; | |
2033 | } | |
2034 | } | |
2035 | } | |
6dc132d9 | 2036 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2037 | |
2038 | case SHT_REL: | |
2039 | case SHT_RELA: | |
2040 | /* *These* do a lot of work -- but build no sections! */ | |
2041 | { | |
2042 | asection *target_sect; | |
2043 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 2044 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 2045 | |
aa2ca951 JJ |
2046 | if (hdr->sh_entsize |
2047 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
2048 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
2049 | return FALSE; | |
2050 | ||
03ae5f59 | 2051 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
2052 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
2053 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
2054 | { |
2055 | ((*_bfd_error_handler) | |
d003868e AM |
2056 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
2057 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
2058 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2059 | shindex); | |
03ae5f59 ILT |
2060 | } |
2061 | ||
252b5132 RH |
2062 | /* For some incomprehensible reason Oracle distributes |
2063 | libraries for Solaris in which some of the objects have | |
2064 | bogus sh_link fields. It would be nice if we could just | |
2065 | reject them, but, unfortunately, some people need to use | |
2066 | them. We scan through the section headers; if we find only | |
2067 | one suitable symbol table, we clobber the sh_link to point | |
2068 | to it. I hope this doesn't break anything. */ | |
2069 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
2070 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
2071 | { | |
9ad5cbcf | 2072 | unsigned int scan; |
252b5132 RH |
2073 | int found; |
2074 | ||
2075 | found = 0; | |
9ad5cbcf | 2076 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2077 | { |
2078 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2079 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2080 | { | |
2081 | if (found != 0) | |
2082 | { | |
2083 | found = 0; | |
2084 | break; | |
2085 | } | |
2086 | found = scan; | |
2087 | } | |
2088 | } | |
2089 | if (found != 0) | |
2090 | hdr->sh_link = found; | |
2091 | } | |
2092 | ||
2093 | /* Get the symbol table. */ | |
1b3a8575 AM |
2094 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2095 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2096 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 2097 | return FALSE; |
252b5132 RH |
2098 | |
2099 | /* If this reloc section does not use the main symbol table we | |
2100 | don't treat it as a reloc section. BFD can't adequately | |
2101 | represent such a section, so at least for now, we don't | |
c044fabd | 2102 | try. We just present it as a normal section. We also |
60bcf0fa | 2103 | can't use it as a reloc section if it points to the null |
185ef66d AM |
2104 | section, an invalid section, or another reloc section. */ |
2105 | if (hdr->sh_link != elf_onesymtab (abfd) | |
2106 | || hdr->sh_info == SHN_UNDEF | |
2107 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
2108 | || hdr->sh_info >= num_sec | |
2109 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2110 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
2111 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2112 | shindex); | |
252b5132 RH |
2113 | |
2114 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2115 | return FALSE; |
252b5132 RH |
2116 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2117 | if (target_sect == NULL) | |
b34976b6 | 2118 | return FALSE; |
252b5132 RH |
2119 | |
2120 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2121 | || target_sect->reloc_count == 0) | |
2122 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2123 | else | |
2124 | { | |
dc810e39 | 2125 | bfd_size_type amt; |
252b5132 | 2126 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2127 | amt = sizeof (*hdr2); |
217aa764 | 2128 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2129 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2130 | } | |
2131 | *hdr2 = *hdr; | |
2132 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2133 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2134 | target_sect->flags |= SEC_RELOC; |
2135 | target_sect->relocation = NULL; | |
2136 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2137 | /* In the section to which the relocations apply, mark whether |
2138 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2139 | if (hdr->sh_size != 0) |
68bfbfcc | 2140 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2141 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2142 | return TRUE; |
252b5132 | 2143 | } |
252b5132 RH |
2144 | |
2145 | case SHT_GNU_verdef: | |
2146 | elf_dynverdef (abfd) = shindex; | |
2147 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2148 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2149 | |
2150 | case SHT_GNU_versym: | |
a50b2160 JJ |
2151 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
2152 | return FALSE; | |
252b5132 RH |
2153 | elf_dynversym (abfd) = shindex; |
2154 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2155 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2156 | |
2157 | case SHT_GNU_verneed: | |
2158 | elf_dynverref (abfd) = shindex; | |
2159 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2160 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2161 | |
2162 | case SHT_SHLIB: | |
b34976b6 | 2163 | return TRUE; |
252b5132 | 2164 | |
dbb410c3 | 2165 | case SHT_GROUP: |
b885599b AM |
2166 | /* We need a BFD section for objcopy and relocatable linking, |
2167 | and it's handy to have the signature available as the section | |
2168 | name. */ | |
1783205a | 2169 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 2170 | return FALSE; |
b885599b AM |
2171 | name = group_signature (abfd, hdr); |
2172 | if (name == NULL) | |
b34976b6 | 2173 | return FALSE; |
6dc132d9 | 2174 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2175 | return FALSE; |
dbb410c3 AM |
2176 | if (hdr->contents != NULL) |
2177 | { | |
2178 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 2179 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
2180 | asection *s; |
2181 | ||
b885599b AM |
2182 | if (idx->flags & GRP_COMDAT) |
2183 | hdr->bfd_section->flags | |
2184 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2185 | ||
45c5e9ed L |
2186 | /* We try to keep the same section order as it comes in. */ |
2187 | idx += n_elt; | |
dbb410c3 | 2188 | while (--n_elt != 0) |
1783205a NC |
2189 | { |
2190 | --idx; | |
2191 | ||
2192 | if (idx->shdr != NULL | |
2193 | && (s = idx->shdr->bfd_section) != NULL | |
2194 | && elf_next_in_group (s) != NULL) | |
2195 | { | |
2196 | elf_next_in_group (hdr->bfd_section) = s; | |
2197 | break; | |
2198 | } | |
2199 | } | |
dbb410c3 AM |
2200 | } |
2201 | break; | |
2202 | ||
252b5132 | 2203 | default: |
104d59d1 JM |
2204 | /* Possibly an attributes section. */ |
2205 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
2206 | || hdr->sh_type == bed->obj_attrs_section_type) | |
2207 | { | |
2208 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
2209 | return FALSE; | |
2210 | _bfd_elf_parse_attributes (abfd, hdr); | |
2211 | return TRUE; | |
2212 | } | |
2213 | ||
252b5132 | 2214 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
2215 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
2216 | return TRUE; | |
2217 | ||
2218 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
2219 | { | |
2220 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
2221 | /* FIXME: How to properly handle allocated section reserved | |
2222 | for applications? */ | |
2223 | (*_bfd_error_handler) | |
2224 | (_("%B: don't know how to handle allocated, application " | |
2225 | "specific section `%s' [0x%8x]"), | |
2226 | abfd, name, hdr->sh_type); | |
2227 | else | |
2228 | /* Allow sections reserved for applications. */ | |
2229 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2230 | shindex); | |
2231 | } | |
2232 | else if (hdr->sh_type >= SHT_LOPROC | |
2233 | && hdr->sh_type <= SHT_HIPROC) | |
2234 | /* FIXME: We should handle this section. */ | |
2235 | (*_bfd_error_handler) | |
2236 | (_("%B: don't know how to handle processor specific section " | |
2237 | "`%s' [0x%8x]"), | |
2238 | abfd, name, hdr->sh_type); | |
2239 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
2240 | { |
2241 | /* Unrecognised OS-specific sections. */ | |
2242 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
2243 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 2244 | required to correctly process the section and the file should |
ff15b240 NC |
2245 | be rejected with an error message. */ |
2246 | (*_bfd_error_handler) | |
2247 | (_("%B: don't know how to handle OS specific section " | |
2248 | "`%s' [0x%8x]"), | |
2249 | abfd, name, hdr->sh_type); | |
2250 | else | |
2251 | /* Otherwise it should be processed. */ | |
2252 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
2253 | } | |
3eb70a79 L |
2254 | else |
2255 | /* FIXME: We should handle this section. */ | |
2256 | (*_bfd_error_handler) | |
2257 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
2258 | abfd, name, hdr->sh_type); | |
2259 | ||
2260 | return FALSE; | |
252b5132 RH |
2261 | } |
2262 | ||
b34976b6 | 2263 | return TRUE; |
252b5132 RH |
2264 | } |
2265 | ||
ec338859 AM |
2266 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2267 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2268 | ||
2269 | asection * | |
217aa764 AM |
2270 | bfd_section_from_r_symndx (bfd *abfd, |
2271 | struct sym_sec_cache *cache, | |
2272 | asection *sec, | |
2273 | unsigned long r_symndx) | |
ec338859 | 2274 | { |
ec338859 | 2275 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2276 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2277 | Elf_External_Sym_Shndx eshndx; | |
2278 | Elf_Internal_Sym isym; | |
ec338859 AM |
2279 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2280 | ||
2281 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2282 | return cache->sec[ent]; | |
2283 | ||
2284 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2285 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2286 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2287 | return NULL; |
9ad5cbcf | 2288 | |
ec338859 AM |
2289 | if (cache->abfd != abfd) |
2290 | { | |
2291 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2292 | cache->abfd = abfd; | |
2293 | } | |
2294 | cache->indx[ent] = r_symndx; | |
2295 | cache->sec[ent] = sec; | |
50bc7936 AM |
2296 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2297 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2298 | { |
2299 | asection *s; | |
6cdc0ccc | 2300 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2301 | if (s != NULL) |
2302 | cache->sec[ent] = s; | |
2303 | } | |
2304 | return cache->sec[ent]; | |
2305 | } | |
2306 | ||
252b5132 RH |
2307 | /* Given an ELF section number, retrieve the corresponding BFD |
2308 | section. */ | |
2309 | ||
2310 | asection * | |
217aa764 | 2311 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2312 | { |
9ad5cbcf | 2313 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2314 | return NULL; |
2315 | return elf_elfsections (abfd)[index]->bfd_section; | |
2316 | } | |
2317 | ||
b35d266b | 2318 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2319 | { |
0112cd26 NC |
2320 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2321 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2322 | }; |
2323 | ||
b35d266b | 2324 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2325 | { |
0112cd26 NC |
2326 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
2327 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2328 | }; |
2329 | ||
b35d266b | 2330 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2331 | { |
0112cd26 NC |
2332 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2333 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2334 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
2335 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
2336 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
2337 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2338 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2339 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2340 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2341 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2342 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2343 | }; |
2344 | ||
b35d266b | 2345 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2346 | { |
0112cd26 NC |
2347 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2348 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2349 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2350 | }; |
2351 | ||
b35d266b | 2352 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2353 | { |
0112cd26 NC |
2354 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2355 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2356 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2357 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2358 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2359 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2360 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2361 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2362 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2363 | }; |
2364 | ||
b35d266b | 2365 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2366 | { |
0112cd26 NC |
2367 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2368 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2369 | }; |
2370 | ||
b35d266b | 2371 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2372 | { |
0112cd26 NC |
2373 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2374 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2375 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2376 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2377 | }; |
2378 | ||
b35d266b | 2379 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2380 | { |
0112cd26 NC |
2381 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2382 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2383 | }; |
2384 | ||
b35d266b | 2385 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2386 | { |
0112cd26 NC |
2387 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2388 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2389 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2390 | }; |
2391 | ||
b35d266b | 2392 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2393 | { |
0112cd26 NC |
2394 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2395 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2396 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2397 | }; |
2398 | ||
b35d266b | 2399 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2400 | { |
0112cd26 NC |
2401 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2402 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2403 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2404 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2405 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2406 | }; |
2407 | ||
b35d266b | 2408 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2409 | { |
0112cd26 NC |
2410 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2411 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2412 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2413 | /* See struct bfd_elf_special_section declaration for the semantics of |
2414 | this special case where .prefix_length != strlen (.prefix). */ | |
2415 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2416 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2417 | }; |
2418 | ||
b35d266b | 2419 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2420 | { |
0112cd26 NC |
2421 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2422 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2423 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2424 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2425 | }; |
2426 | ||
b35d266b | 2427 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2428 | { |
7f4d3958 L |
2429 | special_sections_b, /* 'b' */ |
2430 | special_sections_c, /* 'b' */ | |
2431 | special_sections_d, /* 'd' */ | |
2432 | NULL, /* 'e' */ | |
2433 | special_sections_f, /* 'f' */ | |
2434 | special_sections_g, /* 'g' */ | |
2435 | special_sections_h, /* 'h' */ | |
2436 | special_sections_i, /* 'i' */ | |
2437 | NULL, /* 'j' */ | |
2438 | NULL, /* 'k' */ | |
2439 | special_sections_l, /* 'l' */ | |
2440 | NULL, /* 'm' */ | |
2441 | special_sections_n, /* 'n' */ | |
2442 | NULL, /* 'o' */ | |
2443 | special_sections_p, /* 'p' */ | |
2444 | NULL, /* 'q' */ | |
2445 | special_sections_r, /* 'r' */ | |
2446 | special_sections_s, /* 's' */ | |
2447 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2448 | }; |
2449 | ||
551b43fd AM |
2450 | const struct bfd_elf_special_section * |
2451 | _bfd_elf_get_special_section (const char *name, | |
2452 | const struct bfd_elf_special_section *spec, | |
2453 | unsigned int rela) | |
2f89ff8d L |
2454 | { |
2455 | int i; | |
7f4d3958 | 2456 | int len; |
7f4d3958 | 2457 | |
551b43fd | 2458 | len = strlen (name); |
7f4d3958 | 2459 | |
551b43fd | 2460 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2461 | { |
2462 | int suffix_len; | |
551b43fd | 2463 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2464 | |
2465 | if (len < prefix_len) | |
2466 | continue; | |
551b43fd | 2467 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2468 | continue; |
2469 | ||
551b43fd | 2470 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2471 | if (suffix_len <= 0) |
2472 | { | |
2473 | if (name[prefix_len] != 0) | |
2474 | { | |
2475 | if (suffix_len == 0) | |
2476 | continue; | |
2477 | if (name[prefix_len] != '.' | |
2478 | && (suffix_len == -2 | |
551b43fd | 2479 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2480 | continue; |
2481 | } | |
2482 | } | |
2483 | else | |
2484 | { | |
2485 | if (len < prefix_len + suffix_len) | |
2486 | continue; | |
2487 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2488 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2489 | suffix_len) != 0) |
2490 | continue; | |
2491 | } | |
551b43fd | 2492 | return &spec[i]; |
7dcb9820 | 2493 | } |
2f89ff8d L |
2494 | |
2495 | return NULL; | |
2496 | } | |
2497 | ||
7dcb9820 | 2498 | const struct bfd_elf_special_section * |
29ef7005 | 2499 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2500 | { |
551b43fd AM |
2501 | int i; |
2502 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2503 | const struct elf_backend_data *bed; |
2f89ff8d L |
2504 | |
2505 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2506 | if (sec->name == NULL) |
2507 | return NULL; | |
2f89ff8d | 2508 | |
29ef7005 L |
2509 | bed = get_elf_backend_data (abfd); |
2510 | spec = bed->special_sections; | |
2511 | if (spec) | |
2512 | { | |
2513 | spec = _bfd_elf_get_special_section (sec->name, | |
2514 | bed->special_sections, | |
2515 | sec->use_rela_p); | |
2516 | if (spec != NULL) | |
2517 | return spec; | |
2518 | } | |
2519 | ||
551b43fd AM |
2520 | if (sec->name[0] != '.') |
2521 | return NULL; | |
2f89ff8d | 2522 | |
551b43fd AM |
2523 | i = sec->name[1] - 'b'; |
2524 | if (i < 0 || i > 't' - 'b') | |
2525 | return NULL; | |
2526 | ||
2527 | spec = special_sections[i]; | |
2f89ff8d | 2528 | |
551b43fd AM |
2529 | if (spec == NULL) |
2530 | return NULL; | |
2531 | ||
2532 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2533 | } |
2534 | ||
b34976b6 | 2535 | bfd_boolean |
217aa764 | 2536 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2537 | { |
2538 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2539 | const struct elf_backend_data *bed; |
7dcb9820 | 2540 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2541 | |
f0abc2a1 AM |
2542 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2543 | if (sdata == NULL) | |
2544 | { | |
217aa764 | 2545 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2546 | if (sdata == NULL) |
2547 | return FALSE; | |
217aa764 | 2548 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2549 | } |
bf572ba0 | 2550 | |
551b43fd AM |
2551 | /* Indicate whether or not this section should use RELA relocations. */ |
2552 | bed = get_elf_backend_data (abfd); | |
2553 | sec->use_rela_p = bed->default_use_rela_p; | |
2554 | ||
e843e0f8 L |
2555 | /* When we read a file, we don't need to set ELF section type and |
2556 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2557 | anyway. We will set ELF section type and flags for all linker | |
2558 | created sections. If user specifies BFD section flags, we will | |
2559 | set ELF section type and flags based on BFD section flags in | |
2560 | elf_fake_sections. */ | |
2561 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2562 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2563 | { |
551b43fd | 2564 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2565 | if (ssect != NULL) |
2566 | { | |
2567 | elf_section_type (sec) = ssect->type; | |
2568 | elf_section_flags (sec) = ssect->attr; | |
2569 | } | |
2f89ff8d L |
2570 | } |
2571 | ||
f592407e | 2572 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2573 | } |
2574 | ||
2575 | /* Create a new bfd section from an ELF program header. | |
2576 | ||
2577 | Since program segments have no names, we generate a synthetic name | |
2578 | of the form segment<NUM>, where NUM is generally the index in the | |
2579 | program header table. For segments that are split (see below) we | |
2580 | generate the names segment<NUM>a and segment<NUM>b. | |
2581 | ||
2582 | Note that some program segments may have a file size that is different than | |
2583 | (less than) the memory size. All this means is that at execution the | |
2584 | system must allocate the amount of memory specified by the memory size, | |
2585 | but only initialize it with the first "file size" bytes read from the | |
2586 | file. This would occur for example, with program segments consisting | |
2587 | of combined data+bss. | |
2588 | ||
2589 | To handle the above situation, this routine generates TWO bfd sections | |
2590 | for the single program segment. The first has the length specified by | |
2591 | the file size of the segment, and the second has the length specified | |
2592 | by the difference between the two sizes. In effect, the segment is split | |
2593 | into it's initialized and uninitialized parts. | |
2594 | ||
2595 | */ | |
2596 | ||
b34976b6 | 2597 | bfd_boolean |
217aa764 AM |
2598 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2599 | Elf_Internal_Phdr *hdr, | |
2600 | int index, | |
2601 | const char *typename) | |
252b5132 RH |
2602 | { |
2603 | asection *newsect; | |
2604 | char *name; | |
2605 | char namebuf[64]; | |
d4c88bbb | 2606 | size_t len; |
252b5132 RH |
2607 | int split; |
2608 | ||
2609 | split = ((hdr->p_memsz > 0) | |
2610 | && (hdr->p_filesz > 0) | |
2611 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2612 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2613 | len = strlen (namebuf) + 1; |
217aa764 | 2614 | name = bfd_alloc (abfd, len); |
252b5132 | 2615 | if (!name) |
b34976b6 | 2616 | return FALSE; |
d4c88bbb | 2617 | memcpy (name, namebuf, len); |
252b5132 RH |
2618 | newsect = bfd_make_section (abfd, name); |
2619 | if (newsect == NULL) | |
b34976b6 | 2620 | return FALSE; |
252b5132 RH |
2621 | newsect->vma = hdr->p_vaddr; |
2622 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2623 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2624 | newsect->filepos = hdr->p_offset; |
2625 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2626 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2627 | if (hdr->p_type == PT_LOAD) |
2628 | { | |
2629 | newsect->flags |= SEC_ALLOC; | |
2630 | newsect->flags |= SEC_LOAD; | |
2631 | if (hdr->p_flags & PF_X) | |
2632 | { | |
2633 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2634 | may be data. */ |
252b5132 RH |
2635 | newsect->flags |= SEC_CODE; |
2636 | } | |
2637 | } | |
2638 | if (!(hdr->p_flags & PF_W)) | |
2639 | { | |
2640 | newsect->flags |= SEC_READONLY; | |
2641 | } | |
2642 | ||
2643 | if (split) | |
2644 | { | |
27ac83bf | 2645 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2646 | len = strlen (namebuf) + 1; |
217aa764 | 2647 | name = bfd_alloc (abfd, len); |
252b5132 | 2648 | if (!name) |
b34976b6 | 2649 | return FALSE; |
d4c88bbb | 2650 | memcpy (name, namebuf, len); |
252b5132 RH |
2651 | newsect = bfd_make_section (abfd, name); |
2652 | if (newsect == NULL) | |
b34976b6 | 2653 | return FALSE; |
252b5132 RH |
2654 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2655 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2656 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2657 | if (hdr->p_type == PT_LOAD) |
2658 | { | |
2659 | newsect->flags |= SEC_ALLOC; | |
2660 | if (hdr->p_flags & PF_X) | |
2661 | newsect->flags |= SEC_CODE; | |
2662 | } | |
2663 | if (!(hdr->p_flags & PF_W)) | |
2664 | newsect->flags |= SEC_READONLY; | |
2665 | } | |
2666 | ||
b34976b6 | 2667 | return TRUE; |
252b5132 RH |
2668 | } |
2669 | ||
b34976b6 | 2670 | bfd_boolean |
217aa764 | 2671 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2672 | { |
9c5bfbb7 | 2673 | const struct elf_backend_data *bed; |
20cfcaae NC |
2674 | |
2675 | switch (hdr->p_type) | |
2676 | { | |
2677 | case PT_NULL: | |
2678 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2679 | ||
2680 | case PT_LOAD: | |
2681 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2682 | ||
2683 | case PT_DYNAMIC: | |
2684 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2685 | ||
2686 | case PT_INTERP: | |
2687 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2688 | ||
2689 | case PT_NOTE: | |
2690 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2691 | return FALSE; |
217aa764 | 2692 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2693 | return FALSE; |
2694 | return TRUE; | |
20cfcaae NC |
2695 | |
2696 | case PT_SHLIB: | |
2697 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2698 | ||
2699 | case PT_PHDR: | |
2700 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2701 | ||
811072d8 RM |
2702 | case PT_GNU_EH_FRAME: |
2703 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2704 | "eh_frame_hdr"); | |
2705 | ||
9ee5e499 JJ |
2706 | case PT_GNU_STACK: |
2707 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2708 | ||
8c37241b JJ |
2709 | case PT_GNU_RELRO: |
2710 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2711 | ||
20cfcaae | 2712 | default: |
8c1acd09 | 2713 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2714 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2715 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2716 | } |
2717 | } | |
2718 | ||
23bc299b | 2719 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2720 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2721 | relocations; otherwise, we use REL relocations. */ |
2722 | ||
b34976b6 | 2723 | bfd_boolean |
217aa764 AM |
2724 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2725 | Elf_Internal_Shdr *rel_hdr, | |
2726 | asection *asect, | |
2727 | bfd_boolean use_rela_p) | |
23bc299b MM |
2728 | { |
2729 | char *name; | |
9c5bfbb7 | 2730 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2731 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2732 | |
dc810e39 | 2733 | name = bfd_alloc (abfd, amt); |
23bc299b | 2734 | if (name == NULL) |
b34976b6 | 2735 | return FALSE; |
23bc299b MM |
2736 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2737 | rel_hdr->sh_name = | |
2b0f7ef9 | 2738 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2739 | FALSE); |
23bc299b | 2740 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2741 | return FALSE; |
23bc299b MM |
2742 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2743 | rel_hdr->sh_entsize = (use_rela_p | |
2744 | ? bed->s->sizeof_rela | |
2745 | : bed->s->sizeof_rel); | |
45d6a902 | 2746 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2747 | rel_hdr->sh_flags = 0; |
2748 | rel_hdr->sh_addr = 0; | |
2749 | rel_hdr->sh_size = 0; | |
2750 | rel_hdr->sh_offset = 0; | |
2751 | ||
b34976b6 | 2752 | return TRUE; |
23bc299b MM |
2753 | } |
2754 | ||
252b5132 RH |
2755 | /* Set up an ELF internal section header for a section. */ |
2756 | ||
252b5132 | 2757 | static void |
217aa764 | 2758 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2759 | { |
9c5bfbb7 | 2760 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2761 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2762 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2763 | unsigned int sh_type; |
252b5132 RH |
2764 | |
2765 | if (*failedptr) | |
2766 | { | |
2767 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2768 | loop. */ |
252b5132 RH |
2769 | return; |
2770 | } | |
2771 | ||
2772 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2773 | ||
e57b5356 AM |
2774 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2775 | asect->name, FALSE); | |
2776 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2777 | { |
b34976b6 | 2778 | *failedptr = TRUE; |
252b5132 RH |
2779 | return; |
2780 | } | |
2781 | ||
a4d8e49b | 2782 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2783 | |
2784 | if ((asect->flags & SEC_ALLOC) != 0 | |
2785 | || asect->user_set_vma) | |
2786 | this_hdr->sh_addr = asect->vma; | |
2787 | else | |
2788 | this_hdr->sh_addr = 0; | |
2789 | ||
2790 | this_hdr->sh_offset = 0; | |
eea6121a | 2791 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2792 | this_hdr->sh_link = 0; |
2793 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2794 | /* The sh_entsize and sh_info fields may have been set already by | |
2795 | copy_private_section_data. */ | |
2796 | ||
2797 | this_hdr->bfd_section = asect; | |
2798 | this_hdr->contents = NULL; | |
2799 | ||
3cddba1e L |
2800 | /* If the section type is unspecified, we set it based on |
2801 | asect->flags. */ | |
2802 | if (this_hdr->sh_type == SHT_NULL) | |
2803 | { | |
45c5e9ed | 2804 | if ((asect->flags & SEC_GROUP) != 0) |
ccd2ec6a | 2805 | this_hdr->sh_type = SHT_GROUP; |
45c5e9ed | 2806 | else if ((asect->flags & SEC_ALLOC) != 0 |
1ea63fd2 AM |
2807 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2808 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
3cddba1e L |
2809 | this_hdr->sh_type = SHT_NOBITS; |
2810 | else | |
2811 | this_hdr->sh_type = SHT_PROGBITS; | |
2812 | } | |
2813 | ||
2f89ff8d | 2814 | switch (this_hdr->sh_type) |
252b5132 | 2815 | { |
2f89ff8d | 2816 | default: |
2f89ff8d L |
2817 | break; |
2818 | ||
2819 | case SHT_STRTAB: | |
2820 | case SHT_INIT_ARRAY: | |
2821 | case SHT_FINI_ARRAY: | |
2822 | case SHT_PREINIT_ARRAY: | |
2823 | case SHT_NOTE: | |
2824 | case SHT_NOBITS: | |
2825 | case SHT_PROGBITS: | |
2826 | break; | |
2827 | ||
2828 | case SHT_HASH: | |
c7ac6ff8 | 2829 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2830 | break; |
5de3bf90 | 2831 | |
2f89ff8d | 2832 | case SHT_DYNSYM: |
252b5132 | 2833 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2834 | break; |
2835 | ||
2836 | case SHT_DYNAMIC: | |
252b5132 | 2837 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2838 | break; |
2839 | ||
2840 | case SHT_RELA: | |
2841 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2842 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2843 | break; | |
2844 | ||
2845 | case SHT_REL: | |
2846 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2847 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2848 | break; | |
2849 | ||
2850 | case SHT_GNU_versym: | |
252b5132 | 2851 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2852 | break; |
2853 | ||
2854 | case SHT_GNU_verdef: | |
252b5132 RH |
2855 | this_hdr->sh_entsize = 0; |
2856 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2857 | cverdefs. The linker will set cverdefs, but sh_info will be |
2858 | zero. */ | |
252b5132 RH |
2859 | if (this_hdr->sh_info == 0) |
2860 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2861 | else | |
2862 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2863 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2864 | break; |
2865 | ||
2866 | case SHT_GNU_verneed: | |
252b5132 RH |
2867 | this_hdr->sh_entsize = 0; |
2868 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2869 | cverrefs. The linker will set cverrefs, but sh_info will be |
2870 | zero. */ | |
252b5132 RH |
2871 | if (this_hdr->sh_info == 0) |
2872 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2873 | else | |
2874 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2875 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2876 | break; |
2877 | ||
2878 | case SHT_GROUP: | |
1783205a | 2879 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2880 | break; |
fdc90cb4 JJ |
2881 | |
2882 | case SHT_GNU_HASH: | |
2883 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2884 | break; | |
dbb410c3 | 2885 | } |
252b5132 RH |
2886 | |
2887 | if ((asect->flags & SEC_ALLOC) != 0) | |
2888 | this_hdr->sh_flags |= SHF_ALLOC; | |
2889 | if ((asect->flags & SEC_READONLY) == 0) | |
2890 | this_hdr->sh_flags |= SHF_WRITE; | |
2891 | if ((asect->flags & SEC_CODE) != 0) | |
2892 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2893 | if ((asect->flags & SEC_MERGE) != 0) |
2894 | { | |
2895 | this_hdr->sh_flags |= SHF_MERGE; | |
2896 | this_hdr->sh_entsize = asect->entsize; | |
2897 | if ((asect->flags & SEC_STRINGS) != 0) | |
2898 | this_hdr->sh_flags |= SHF_STRINGS; | |
2899 | } | |
1126897b | 2900 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2901 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2902 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2903 | { |
2904 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2905 | if (asect->size == 0 |
2906 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2907 | { |
3a800eb9 | 2908 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2909 | |
704afa60 | 2910 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2911 | if (o != NULL) |
2912 | { | |
704afa60 | 2913 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2914 | if (this_hdr->sh_size != 0) |
2915 | this_hdr->sh_type = SHT_NOBITS; | |
2916 | } | |
704afa60 JJ |
2917 | } |
2918 | } | |
252b5132 RH |
2919 | |
2920 | /* Check for processor-specific section types. */ | |
0414f35b | 2921 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2922 | if (bed->elf_backend_fake_sections |
2923 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2924 | *failedptr = TRUE; |
252b5132 | 2925 | |
42bb2e33 | 2926 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2927 | { |
2928 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2929 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2930 | this_hdr->sh_type = sh_type; |
2931 | } | |
2932 | ||
252b5132 | 2933 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2934 | SHT_REL[A] section. If two relocation sections are required for |
2935 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2936 | create the other. */ |
23bc299b | 2937 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2938 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2939 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2940 | asect, |
68bfbfcc | 2941 | asect->use_rela_p)) |
b34976b6 | 2942 | *failedptr = TRUE; |
252b5132 RH |
2943 | } |
2944 | ||
dbb410c3 AM |
2945 | /* Fill in the contents of a SHT_GROUP section. */ |
2946 | ||
1126897b | 2947 | void |
217aa764 | 2948 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2949 | { |
217aa764 | 2950 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2951 | unsigned long symindx; |
9dce4196 | 2952 | asection *elt, *first; |
dbb410c3 | 2953 | unsigned char *loc; |
b34976b6 | 2954 | bfd_boolean gas; |
dbb410c3 | 2955 | |
7e4111ad L |
2956 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2957 | elfxx-ia64.c. */ | |
2958 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2959 | || *failedptr) |
2960 | return; | |
2961 | ||
1126897b AM |
2962 | symindx = 0; |
2963 | if (elf_group_id (sec) != NULL) | |
2964 | symindx = elf_group_id (sec)->udata.i; | |
2965 | ||
2966 | if (symindx == 0) | |
2967 | { | |
2968 | /* If called from the assembler, swap_out_syms will have set up | |
2969 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2970 | if (elf_section_syms (abfd) != NULL) | |
2971 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2972 | else | |
2973 | symindx = sec->target_index; | |
2974 | } | |
dbb410c3 AM |
2975 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2976 | ||
1126897b | 2977 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2978 | gas = TRUE; |
dbb410c3 AM |
2979 | if (sec->contents == NULL) |
2980 | { | |
b34976b6 | 2981 | gas = FALSE; |
eea6121a | 2982 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2983 | |
2984 | /* Arrange for the section to be written out. */ | |
2985 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2986 | if (sec->contents == NULL) |
2987 | { | |
b34976b6 | 2988 | *failedptr = TRUE; |
dbb410c3 AM |
2989 | return; |
2990 | } | |
2991 | } | |
2992 | ||
eea6121a | 2993 | loc = sec->contents + sec->size; |
dbb410c3 | 2994 | |
9dce4196 AM |
2995 | /* Get the pointer to the first section in the group that gas |
2996 | squirreled away here. objcopy arranges for this to be set to the | |
2997 | start of the input section group. */ | |
2998 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2999 | |
3000 | /* First element is a flag word. Rest of section is elf section | |
3001 | indices for all the sections of the group. Write them backwards | |
3002 | just to keep the group in the same order as given in .section | |
3003 | directives, not that it matters. */ | |
3004 | while (elt != NULL) | |
3005 | { | |
9dce4196 AM |
3006 | asection *s; |
3007 | unsigned int idx; | |
3008 | ||
dbb410c3 | 3009 | loc -= 4; |
9dce4196 AM |
3010 | s = elt; |
3011 | if (!gas) | |
3012 | s = s->output_section; | |
3013 | idx = 0; | |
3014 | if (s != NULL) | |
3015 | idx = elf_section_data (s)->this_idx; | |
3016 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 3017 | elt = elf_next_in_group (elt); |
9dce4196 AM |
3018 | if (elt == first) |
3019 | break; | |
dbb410c3 AM |
3020 | } |
3021 | ||
3d7f7666 | 3022 | if ((loc -= 4) != sec->contents) |
9dce4196 | 3023 | abort (); |
dbb410c3 | 3024 | |
9dce4196 | 3025 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
3026 | } |
3027 | ||
252b5132 RH |
3028 | /* Assign all ELF section numbers. The dummy first section is handled here |
3029 | too. The link/info pointers for the standard section types are filled | |
3030 | in here too, while we're at it. */ | |
3031 | ||
b34976b6 | 3032 | static bfd_boolean |
da9f89d4 | 3033 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3034 | { |
3035 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
3036 | asection *sec; | |
2b0f7ef9 | 3037 | unsigned int section_number, secn; |
252b5132 | 3038 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 3039 | struct bfd_elf_section_data *d; |
252b5132 RH |
3040 | |
3041 | section_number = 1; | |
3042 | ||
2b0f7ef9 JJ |
3043 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
3044 | ||
da9f89d4 L |
3045 | /* SHT_GROUP sections are in relocatable files only. */ |
3046 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 3047 | { |
da9f89d4 | 3048 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 3049 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 3050 | { |
5daa8fe7 | 3051 | d = elf_section_data (sec); |
da9f89d4 L |
3052 | |
3053 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 3054 | { |
5daa8fe7 | 3055 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
3056 | { |
3057 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 3058 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 3059 | abfd->section_count--; |
da9f89d4 | 3060 | } |
08a40648 | 3061 | else |
da9f89d4 L |
3062 | { |
3063 | if (section_number == SHN_LORESERVE) | |
3064 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3065 | d->this_idx = section_number++; | |
3066 | } | |
3067 | } | |
47cc2cf5 PB |
3068 | } |
3069 | } | |
3070 | ||
3071 | for (sec = abfd->sections; sec; sec = sec->next) | |
3072 | { | |
3073 | d = elf_section_data (sec); | |
3074 | ||
3075 | if (d->this_hdr.sh_type != SHT_GROUP) | |
3076 | { | |
3077 | if (section_number == SHN_LORESERVE) | |
3078 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3079 | d->this_idx = section_number++; | |
3080 | } | |
2b0f7ef9 | 3081 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
3082 | if ((sec->flags & SEC_RELOC) == 0) |
3083 | d->rel_idx = 0; | |
3084 | else | |
2b0f7ef9 | 3085 | { |
9ad5cbcf AM |
3086 | if (section_number == SHN_LORESERVE) |
3087 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3088 | d->rel_idx = section_number++; |
3089 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
3090 | } | |
23bc299b MM |
3091 | |
3092 | if (d->rel_hdr2) | |
2b0f7ef9 | 3093 | { |
9ad5cbcf AM |
3094 | if (section_number == SHN_LORESERVE) |
3095 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3096 | d->rel_idx2 = section_number++; |
3097 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
3098 | } | |
23bc299b MM |
3099 | else |
3100 | d->rel_idx2 = 0; | |
252b5132 RH |
3101 | } |
3102 | ||
9ad5cbcf AM |
3103 | if (section_number == SHN_LORESERVE) |
3104 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3105 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 3106 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 3107 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
3108 | |
3109 | if (bfd_get_symcount (abfd) > 0) | |
3110 | { | |
9ad5cbcf AM |
3111 | if (section_number == SHN_LORESERVE) |
3112 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3113 | t->symtab_section = section_number++; |
2b0f7ef9 | 3114 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
3115 | if (section_number > SHN_LORESERVE - 2) |
3116 | { | |
3117 | if (section_number == SHN_LORESERVE) | |
3118 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3119 | t->symtab_shndx_section = section_number++; | |
3120 | t->symtab_shndx_hdr.sh_name | |
3121 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 3122 | ".symtab_shndx", FALSE); |
9ad5cbcf | 3123 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 3124 | return FALSE; |
9ad5cbcf AM |
3125 | } |
3126 | if (section_number == SHN_LORESERVE) | |
3127 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3128 | t->strtab_section = section_number++; |
2b0f7ef9 | 3129 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3130 | } |
3131 | ||
2b0f7ef9 JJ |
3132 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
3133 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
3134 | |
3135 | elf_numsections (abfd) = section_number; | |
252b5132 | 3136 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3137 | if (section_number > SHN_LORESERVE) |
3138 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3139 | |
3140 | /* Set up the list of section header pointers, in agreement with the | |
3141 | indices. */ | |
d0fb9a8d | 3142 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 3143 | if (i_shdrp == NULL) |
b34976b6 | 3144 | return FALSE; |
252b5132 | 3145 | |
d0fb9a8d | 3146 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3147 | if (i_shdrp[0] == NULL) |
3148 | { | |
3149 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3150 | return FALSE; |
252b5132 | 3151 | } |
252b5132 RH |
3152 | |
3153 | elf_elfsections (abfd) = i_shdrp; | |
3154 | ||
3155 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3156 | if (bfd_get_symcount (abfd) > 0) | |
3157 | { | |
3158 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3159 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3160 | { | |
3161 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3162 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3163 | } | |
252b5132 RH |
3164 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3165 | t->symtab_hdr.sh_link = t->strtab_section; | |
3166 | } | |
38ce5b11 | 3167 | |
252b5132 RH |
3168 | for (sec = abfd->sections; sec; sec = sec->next) |
3169 | { | |
3170 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3171 | asection *s; | |
3172 | const char *name; | |
3173 | ||
3174 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3175 | if (d->rel_idx != 0) | |
3176 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3177 | if (d->rel_idx2 != 0) |
3178 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3179 | |
3180 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3181 | ||
3182 | /* sh_link of a reloc section is the section index of the symbol | |
3183 | table. sh_info is the section index of the section to which | |
3184 | the relocation entries apply. */ | |
3185 | if (d->rel_idx != 0) | |
3186 | { | |
3187 | d->rel_hdr.sh_link = t->symtab_section; | |
3188 | d->rel_hdr.sh_info = d->this_idx; | |
3189 | } | |
23bc299b MM |
3190 | if (d->rel_idx2 != 0) |
3191 | { | |
3192 | d->rel_hdr2->sh_link = t->symtab_section; | |
3193 | d->rel_hdr2->sh_info = d->this_idx; | |
3194 | } | |
252b5132 | 3195 | |
38ce5b11 L |
3196 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3197 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3198 | { | |
3199 | s = elf_linked_to_section (sec); | |
3200 | if (s) | |
38ce5b11 | 3201 | { |
f2876037 | 3202 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3203 | if (link_info != NULL) |
38ce5b11 | 3204 | { |
f2876037 | 3205 | /* Check discarded linkonce section. */ |
ccd2ec6a | 3206 | if (elf_discarded_section (s)) |
38ce5b11 | 3207 | { |
ccd2ec6a L |
3208 | asection *kept; |
3209 | (*_bfd_error_handler) | |
3210 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3211 | abfd, d->this_hdr.bfd_section, | |
3212 | s, s->owner); | |
3213 | /* Point to the kept section if it has the same | |
3214 | size as the discarded one. */ | |
c0f00686 | 3215 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 3216 | if (kept == NULL) |
185d09ad | 3217 | { |
ccd2ec6a L |
3218 | bfd_set_error (bfd_error_bad_value); |
3219 | return FALSE; | |
185d09ad | 3220 | } |
ccd2ec6a | 3221 | s = kept; |
38ce5b11 | 3222 | } |
e424ecc8 | 3223 | |
ccd2ec6a L |
3224 | s = s->output_section; |
3225 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3226 | } |
f2876037 L |
3227 | else |
3228 | { | |
3229 | /* Handle objcopy. */ | |
3230 | if (s->output_section == NULL) | |
3231 | { | |
3232 | (*_bfd_error_handler) | |
3233 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3234 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3235 | bfd_set_error (bfd_error_bad_value); | |
3236 | return FALSE; | |
3237 | } | |
3238 | s = s->output_section; | |
3239 | } | |
ccd2ec6a L |
3240 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3241 | } | |
3242 | else | |
3243 | { | |
3244 | /* PR 290: | |
3245 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3246 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3247 | sh_info fields. Hence we could get the situation | |
08a40648 | 3248 | where s is NULL. */ |
ccd2ec6a L |
3249 | const struct elf_backend_data *bed |
3250 | = get_elf_backend_data (abfd); | |
3251 | if (bed->link_order_error_handler) | |
3252 | bed->link_order_error_handler | |
3253 | (_("%B: warning: sh_link not set for section `%A'"), | |
3254 | abfd, sec); | |
38ce5b11 L |
3255 | } |
3256 | } | |
3257 | ||
252b5132 RH |
3258 | switch (d->this_hdr.sh_type) |
3259 | { | |
3260 | case SHT_REL: | |
3261 | case SHT_RELA: | |
3262 | /* A reloc section which we are treating as a normal BFD | |
3263 | section. sh_link is the section index of the symbol | |
3264 | table. sh_info is the section index of the section to | |
3265 | which the relocation entries apply. We assume that an | |
3266 | allocated reloc section uses the dynamic symbol table. | |
3267 | FIXME: How can we be sure? */ | |
3268 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3269 | if (s != NULL) | |
3270 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3271 | ||
3272 | /* We look up the section the relocs apply to by name. */ | |
3273 | name = sec->name; | |
3274 | if (d->this_hdr.sh_type == SHT_REL) | |
3275 | name += 4; | |
3276 | else | |
3277 | name += 5; | |
3278 | s = bfd_get_section_by_name (abfd, name); | |
3279 | if (s != NULL) | |
3280 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3281 | break; | |
3282 | ||
3283 | case SHT_STRTAB: | |
3284 | /* We assume that a section named .stab*str is a stabs | |
3285 | string section. We look for a section with the same name | |
3286 | but without the trailing ``str'', and set its sh_link | |
3287 | field to point to this section. */ | |
0112cd26 | 3288 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3289 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3290 | { | |
3291 | size_t len; | |
3292 | char *alc; | |
3293 | ||
3294 | len = strlen (sec->name); | |
217aa764 | 3295 | alc = bfd_malloc (len - 2); |
252b5132 | 3296 | if (alc == NULL) |
b34976b6 | 3297 | return FALSE; |
d4c88bbb | 3298 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3299 | alc[len - 3] = '\0'; |
3300 | s = bfd_get_section_by_name (abfd, alc); | |
3301 | free (alc); | |
3302 | if (s != NULL) | |
3303 | { | |
3304 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3305 | ||
3306 | /* This is a .stab section. */ | |
0594c12d AM |
3307 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3308 | elf_section_data (s)->this_hdr.sh_entsize | |
3309 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3310 | } |
3311 | } | |
3312 | break; | |
3313 | ||
3314 | case SHT_DYNAMIC: | |
3315 | case SHT_DYNSYM: | |
3316 | case SHT_GNU_verneed: | |
3317 | case SHT_GNU_verdef: | |
3318 | /* sh_link is the section header index of the string table | |
3319 | used for the dynamic entries, or the symbol table, or the | |
3320 | version strings. */ | |
3321 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3322 | if (s != NULL) | |
3323 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3324 | break; | |
3325 | ||
7f1204bb JJ |
3326 | case SHT_GNU_LIBLIST: |
3327 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3328 | list used for the dynamic entries, or the symbol table, or |
3329 | the version strings. */ | |
7f1204bb JJ |
3330 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3331 | ? ".dynstr" : ".gnu.libstr"); | |
3332 | if (s != NULL) | |
3333 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3334 | break; | |
3335 | ||
252b5132 | 3336 | case SHT_HASH: |
fdc90cb4 | 3337 | case SHT_GNU_HASH: |
252b5132 RH |
3338 | case SHT_GNU_versym: |
3339 | /* sh_link is the section header index of the symbol table | |
3340 | this hash table or version table is for. */ | |
3341 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3342 | if (s != NULL) | |
3343 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3344 | break; | |
dbb410c3 AM |
3345 | |
3346 | case SHT_GROUP: | |
3347 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3348 | } |
3349 | } | |
3350 | ||
2b0f7ef9 | 3351 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3352 | if (i_shdrp[secn] == NULL) |
3353 | i_shdrp[secn] = i_shdrp[0]; | |
3354 | else | |
3355 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3356 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3357 | return TRUE; |
252b5132 RH |
3358 | } |
3359 | ||
3360 | /* Map symbol from it's internal number to the external number, moving | |
3361 | all local symbols to be at the head of the list. */ | |
3362 | ||
5372391b | 3363 | static bfd_boolean |
217aa764 | 3364 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3365 | { |
3366 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3367 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3368 | if (bed->elf_backend_sym_is_global) |
3369 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3370 | |
3371 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3372 | || bfd_is_und_section (bfd_get_section (sym)) | |
3373 | || bfd_is_com_section (bfd_get_section (sym))); | |
3374 | } | |
3375 | ||
5372391b AM |
3376 | /* Don't output section symbols for sections that are not going to be |
3377 | output. Also, don't output section symbols for reloc and other | |
3378 | special sections. */ | |
3379 | ||
3380 | static bfd_boolean | |
3381 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3382 | { | |
3383 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3384 | && (sym->value != 0 | |
3385 | || (sym->section->owner != abfd | |
3386 | && (sym->section->output_section->owner != abfd | |
3387 | || sym->section->output_offset != 0)))); | |
3388 | } | |
3389 | ||
b34976b6 | 3390 | static bfd_boolean |
217aa764 | 3391 | elf_map_symbols (bfd *abfd) |
252b5132 | 3392 | { |
dc810e39 | 3393 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3394 | asymbol **syms = bfd_get_outsymbols (abfd); |
3395 | asymbol **sect_syms; | |
dc810e39 AM |
3396 | unsigned int num_locals = 0; |
3397 | unsigned int num_globals = 0; | |
3398 | unsigned int num_locals2 = 0; | |
3399 | unsigned int num_globals2 = 0; | |
252b5132 | 3400 | int max_index = 0; |
dc810e39 | 3401 | unsigned int idx; |
252b5132 RH |
3402 | asection *asect; |
3403 | asymbol **new_syms; | |
252b5132 RH |
3404 | |
3405 | #ifdef DEBUG | |
3406 | fprintf (stderr, "elf_map_symbols\n"); | |
3407 | fflush (stderr); | |
3408 | #endif | |
3409 | ||
252b5132 RH |
3410 | for (asect = abfd->sections; asect; asect = asect->next) |
3411 | { | |
3412 | if (max_index < asect->index) | |
3413 | max_index = asect->index; | |
3414 | } | |
3415 | ||
3416 | max_index++; | |
d0fb9a8d | 3417 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3418 | if (sect_syms == NULL) |
b34976b6 | 3419 | return FALSE; |
252b5132 | 3420 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3421 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3422 | |
079e9a2f AM |
3423 | /* Init sect_syms entries for any section symbols we have already |
3424 | decided to output. */ | |
252b5132 RH |
3425 | for (idx = 0; idx < symcount; idx++) |
3426 | { | |
dc810e39 | 3427 | asymbol *sym = syms[idx]; |
c044fabd | 3428 | |
252b5132 | 3429 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3430 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3431 | { |
5372391b | 3432 | asection *sec = sym->section; |
252b5132 | 3433 | |
5372391b AM |
3434 | if (sec->owner != abfd) |
3435 | sec = sec->output_section; | |
252b5132 | 3436 | |
5372391b | 3437 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3438 | } |
3439 | } | |
3440 | ||
252b5132 RH |
3441 | /* Classify all of the symbols. */ |
3442 | for (idx = 0; idx < symcount; idx++) | |
3443 | { | |
5372391b AM |
3444 | if (ignore_section_sym (abfd, syms[idx])) |
3445 | continue; | |
252b5132 RH |
3446 | if (!sym_is_global (abfd, syms[idx])) |
3447 | num_locals++; | |
3448 | else | |
3449 | num_globals++; | |
3450 | } | |
079e9a2f | 3451 | |
5372391b | 3452 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3453 | sections will already have a section symbol in outsymbols, but |
3454 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3455 | at least in that case. */ | |
252b5132 RH |
3456 | for (asect = abfd->sections; asect; asect = asect->next) |
3457 | { | |
079e9a2f | 3458 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3459 | { |
079e9a2f | 3460 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3461 | num_locals++; |
3462 | else | |
3463 | num_globals++; | |
252b5132 RH |
3464 | } |
3465 | } | |
3466 | ||
3467 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3468 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3469 | |
252b5132 | 3470 | if (new_syms == NULL) |
b34976b6 | 3471 | return FALSE; |
252b5132 RH |
3472 | |
3473 | for (idx = 0; idx < symcount; idx++) | |
3474 | { | |
3475 | asymbol *sym = syms[idx]; | |
dc810e39 | 3476 | unsigned int i; |
252b5132 | 3477 | |
5372391b AM |
3478 | if (ignore_section_sym (abfd, sym)) |
3479 | continue; | |
252b5132 RH |
3480 | if (!sym_is_global (abfd, sym)) |
3481 | i = num_locals2++; | |
3482 | else | |
3483 | i = num_locals + num_globals2++; | |
3484 | new_syms[i] = sym; | |
3485 | sym->udata.i = i + 1; | |
3486 | } | |
3487 | for (asect = abfd->sections; asect; asect = asect->next) | |
3488 | { | |
079e9a2f | 3489 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3490 | { |
079e9a2f | 3491 | asymbol *sym = asect->symbol; |
dc810e39 | 3492 | unsigned int i; |
252b5132 | 3493 | |
079e9a2f | 3494 | sect_syms[asect->index] = sym; |
252b5132 RH |
3495 | if (!sym_is_global (abfd, sym)) |
3496 | i = num_locals2++; | |
3497 | else | |
3498 | i = num_locals + num_globals2++; | |
3499 | new_syms[i] = sym; | |
3500 | sym->udata.i = i + 1; | |
3501 | } | |
3502 | } | |
3503 | ||
3504 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3505 | ||
3506 | elf_num_locals (abfd) = num_locals; | |
3507 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3508 | return TRUE; |
252b5132 RH |
3509 | } |
3510 | ||
3511 | /* Align to the maximum file alignment that could be required for any | |
3512 | ELF data structure. */ | |
3513 | ||
268b6b39 | 3514 | static inline file_ptr |
217aa764 | 3515 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3516 | { |
3517 | return (off + align - 1) & ~(align - 1); | |
3518 | } | |
3519 | ||
3520 | /* Assign a file position to a section, optionally aligning to the | |
3521 | required section alignment. */ | |
3522 | ||
217aa764 AM |
3523 | file_ptr |
3524 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3525 | file_ptr offset, | |
3526 | bfd_boolean align) | |
252b5132 RH |
3527 | { |
3528 | if (align) | |
3529 | { | |
3530 | unsigned int al; | |
3531 | ||
3532 | al = i_shdrp->sh_addralign; | |
3533 | if (al > 1) | |
3534 | offset = BFD_ALIGN (offset, al); | |
3535 | } | |
3536 | i_shdrp->sh_offset = offset; | |
3537 | if (i_shdrp->bfd_section != NULL) | |
3538 | i_shdrp->bfd_section->filepos = offset; | |
3539 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3540 | offset += i_shdrp->sh_size; | |
3541 | return offset; | |
3542 | } | |
3543 | ||
3544 | /* Compute the file positions we are going to put the sections at, and | |
3545 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3546 | is not NULL, this is being called by the ELF backend linker. */ | |
3547 | ||
b34976b6 | 3548 | bfd_boolean |
217aa764 AM |
3549 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3550 | struct bfd_link_info *link_info) | |
252b5132 | 3551 | { |
9c5bfbb7 | 3552 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3553 | bfd_boolean failed; |
4b6c0f2f | 3554 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3555 | Elf_Internal_Shdr *shstrtab_hdr; |
3556 | ||
3557 | if (abfd->output_has_begun) | |
b34976b6 | 3558 | return TRUE; |
252b5132 RH |
3559 | |
3560 | /* Do any elf backend specific processing first. */ | |
3561 | if (bed->elf_backend_begin_write_processing) | |
3562 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3563 | ||
3564 | if (! prep_headers (abfd)) | |
b34976b6 | 3565 | return FALSE; |
252b5132 | 3566 | |
e6c51ed4 NC |
3567 | /* Post process the headers if necessary. */ |
3568 | if (bed->elf_backend_post_process_headers) | |
3569 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3570 | ||
b34976b6 | 3571 | failed = FALSE; |
252b5132 RH |
3572 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3573 | if (failed) | |
b34976b6 | 3574 | return FALSE; |
252b5132 | 3575 | |
da9f89d4 | 3576 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3577 | return FALSE; |
252b5132 RH |
3578 | |
3579 | /* The backend linker builds symbol table information itself. */ | |
3580 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3581 | { | |
3582 | /* Non-zero if doing a relocatable link. */ | |
3583 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3584 | ||
3585 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3586 | return FALSE; |
252b5132 RH |
3587 | } |
3588 | ||
1126897b | 3589 | if (link_info == NULL) |
dbb410c3 | 3590 | { |
1126897b | 3591 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3592 | if (failed) |
b34976b6 | 3593 | return FALSE; |
dbb410c3 AM |
3594 | } |
3595 | ||
252b5132 RH |
3596 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3597 | /* sh_name was set in prep_headers. */ | |
3598 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3599 | shstrtab_hdr->sh_flags = 0; | |
3600 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3601 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3602 | shstrtab_hdr->sh_entsize = 0; |
3603 | shstrtab_hdr->sh_link = 0; | |
3604 | shstrtab_hdr->sh_info = 0; | |
3605 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3606 | shstrtab_hdr->sh_addralign = 1; | |
3607 | ||
c84fca4d | 3608 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3609 | return FALSE; |
252b5132 RH |
3610 | |
3611 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3612 | { | |
3613 | file_ptr off; | |
3614 | Elf_Internal_Shdr *hdr; | |
3615 | ||
3616 | off = elf_tdata (abfd)->next_file_pos; | |
3617 | ||
3618 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3619 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3620 | |
9ad5cbcf AM |
3621 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3622 | if (hdr->sh_size != 0) | |
b34976b6 | 3623 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3624 | |
252b5132 | 3625 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3626 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3627 | |
3628 | elf_tdata (abfd)->next_file_pos = off; | |
3629 | ||
3630 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3631 | out. */ |
252b5132 RH |
3632 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3633 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3634 | return FALSE; |
252b5132 RH |
3635 | _bfd_stringtab_free (strtab); |
3636 | } | |
3637 | ||
b34976b6 | 3638 | abfd->output_has_begun = TRUE; |
252b5132 | 3639 | |
b34976b6 | 3640 | return TRUE; |
252b5132 RH |
3641 | } |
3642 | ||
8ded5a0f AM |
3643 | /* Make an initial estimate of the size of the program header. If we |
3644 | get the number wrong here, we'll redo section placement. */ | |
3645 | ||
3646 | static bfd_size_type | |
3647 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3648 | { | |
3649 | size_t segs; | |
3650 | asection *s; | |
3651 | const struct elf_backend_data *bed; | |
3652 | ||
3653 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3654 | and one for data. */ | |
3655 | segs = 2; | |
3656 | ||
3657 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3658 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3659 | { | |
3660 | /* If we have a loadable interpreter section, we need a | |
3661 | PT_INTERP segment. In this case, assume we also need a | |
3662 | PT_PHDR segment, although that may not be true for all | |
3663 | targets. */ | |
3664 | segs += 2; | |
3665 | } | |
3666 | ||
3667 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3668 | { | |
3669 | /* We need a PT_DYNAMIC segment. */ | |
3670 | ++segs; | |
08a40648 | 3671 | |
c9df6640 L |
3672 | if (elf_tdata (abfd)->relro) |
3673 | { | |
3674 | /* We need a PT_GNU_RELRO segment only when there is a | |
3675 | PT_DYNAMIC segment. */ | |
3676 | ++segs; | |
3677 | } | |
8ded5a0f AM |
3678 | } |
3679 | ||
3680 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3681 | { | |
3682 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3683 | ++segs; | |
3684 | } | |
3685 | ||
3686 | if (elf_tdata (abfd)->stack_flags) | |
3687 | { | |
3688 | /* We need a PT_GNU_STACK segment. */ | |
3689 | ++segs; | |
3690 | } | |
3691 | ||
8ded5a0f AM |
3692 | for (s = abfd->sections; s != NULL; s = s->next) |
3693 | { | |
3694 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3695 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3696 | { |
3697 | /* We need a PT_NOTE segment. */ | |
3698 | ++segs; | |
3699 | } | |
3700 | } | |
3701 | ||
3702 | for (s = abfd->sections; s != NULL; s = s->next) | |
3703 | { | |
3704 | if (s->flags & SEC_THREAD_LOCAL) | |
3705 | { | |
3706 | /* We need a PT_TLS segment. */ | |
3707 | ++segs; | |
3708 | break; | |
3709 | } | |
3710 | } | |
3711 | ||
3712 | /* Let the backend count up any program headers it might need. */ | |
3713 | bed = get_elf_backend_data (abfd); | |
3714 | if (bed->elf_backend_additional_program_headers) | |
3715 | { | |
3716 | int a; | |
3717 | ||
3718 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3719 | if (a == -1) | |
3720 | abort (); | |
3721 | segs += a; | |
3722 | } | |
3723 | ||
3724 | return segs * bed->s->sizeof_phdr; | |
3725 | } | |
3726 | ||
252b5132 RH |
3727 | /* Create a mapping from a set of sections to a program segment. */ |
3728 | ||
217aa764 AM |
3729 | static struct elf_segment_map * |
3730 | make_mapping (bfd *abfd, | |
3731 | asection **sections, | |
3732 | unsigned int from, | |
3733 | unsigned int to, | |
3734 | bfd_boolean phdr) | |
252b5132 RH |
3735 | { |
3736 | struct elf_segment_map *m; | |
3737 | unsigned int i; | |
3738 | asection **hdrpp; | |
dc810e39 | 3739 | bfd_size_type amt; |
252b5132 | 3740 | |
dc810e39 AM |
3741 | amt = sizeof (struct elf_segment_map); |
3742 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3743 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3744 | if (m == NULL) |
3745 | return NULL; | |
3746 | m->next = NULL; | |
3747 | m->p_type = PT_LOAD; | |
3748 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3749 | m->sections[i - from] = *hdrpp; | |
3750 | m->count = to - from; | |
3751 | ||
3752 | if (from == 0 && phdr) | |
3753 | { | |
3754 | /* Include the headers in the first PT_LOAD segment. */ | |
3755 | m->includes_filehdr = 1; | |
3756 | m->includes_phdrs = 1; | |
3757 | } | |
3758 | ||
3759 | return m; | |
3760 | } | |
3761 | ||
229fcec5 MM |
3762 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3763 | on failure. */ | |
3764 | ||
3765 | struct elf_segment_map * | |
3766 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3767 | { | |
3768 | struct elf_segment_map *m; | |
3769 | ||
3770 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3771 | if (m == NULL) | |
3772 | return NULL; | |
3773 | m->next = NULL; | |
3774 | m->p_type = PT_DYNAMIC; | |
3775 | m->count = 1; | |
3776 | m->sections[0] = dynsec; | |
08a40648 | 3777 | |
229fcec5 MM |
3778 | return m; |
3779 | } | |
3780 | ||
8ded5a0f | 3781 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3782 | |
b34976b6 | 3783 | static bfd_boolean |
8ded5a0f | 3784 | elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3785 | { |
252e386e | 3786 | struct elf_segment_map **m; |
8ded5a0f | 3787 | const struct elf_backend_data *bed; |
252b5132 | 3788 | |
8ded5a0f AM |
3789 | /* The placement algorithm assumes that non allocated sections are |
3790 | not in PT_LOAD segments. We ensure this here by removing such | |
3791 | sections from the segment map. We also remove excluded | |
252e386e AM |
3792 | sections. Finally, any PT_LOAD segment without sections is |
3793 | removed. */ | |
3794 | m = &elf_tdata (abfd)->segment_map; | |
3795 | while (*m) | |
8ded5a0f AM |
3796 | { |
3797 | unsigned int i, new_count; | |
252b5132 | 3798 | |
252e386e | 3799 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3800 | { |
252e386e AM |
3801 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3802 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3803 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3804 | { |
252e386e AM |
3805 | (*m)->sections[new_count] = (*m)->sections[i]; |
3806 | new_count++; | |
8ded5a0f AM |
3807 | } |
3808 | } | |
252e386e | 3809 | (*m)->count = new_count; |
252b5132 | 3810 | |
252e386e AM |
3811 | if ((*m)->p_type == PT_LOAD && (*m)->count == 0) |
3812 | *m = (*m)->next; | |
3813 | else | |
3814 | m = &(*m)->next; | |
8ded5a0f | 3815 | } |
252b5132 | 3816 | |
8ded5a0f AM |
3817 | bed = get_elf_backend_data (abfd); |
3818 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3819 | { |
252e386e | 3820 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3821 | return FALSE; |
252b5132 | 3822 | } |
252b5132 | 3823 | |
8ded5a0f AM |
3824 | return TRUE; |
3825 | } | |
252b5132 | 3826 | |
8ded5a0f | 3827 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3828 | |
8ded5a0f AM |
3829 | bfd_boolean |
3830 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3831 | { | |
3832 | unsigned int count; | |
3833 | struct elf_segment_map *m; | |
3834 | asection **sections = NULL; | |
3835 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 3836 | |
8ded5a0f AM |
3837 | if (elf_tdata (abfd)->segment_map == NULL |
3838 | && bfd_count_sections (abfd) != 0) | |
252b5132 | 3839 | { |
8ded5a0f AM |
3840 | asection *s; |
3841 | unsigned int i; | |
3842 | struct elf_segment_map *mfirst; | |
3843 | struct elf_segment_map **pm; | |
3844 | asection *last_hdr; | |
3845 | bfd_vma last_size; | |
3846 | unsigned int phdr_index; | |
3847 | bfd_vma maxpagesize; | |
3848 | asection **hdrpp; | |
3849 | bfd_boolean phdr_in_segment = TRUE; | |
3850 | bfd_boolean writable; | |
3851 | int tls_count = 0; | |
3852 | asection *first_tls = NULL; | |
3853 | asection *dynsec, *eh_frame_hdr; | |
3854 | bfd_size_type amt; | |
252b5132 | 3855 | |
8ded5a0f | 3856 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3857 | |
8ded5a0f AM |
3858 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3859 | if (sections == NULL) | |
252b5132 | 3860 | goto error_return; |
252b5132 | 3861 | |
8ded5a0f AM |
3862 | i = 0; |
3863 | for (s = abfd->sections; s != NULL; s = s->next) | |
3864 | { | |
3865 | if ((s->flags & SEC_ALLOC) != 0) | |
3866 | { | |
3867 | sections[i] = s; | |
3868 | ++i; | |
3869 | } | |
3870 | } | |
3871 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3872 | count = i; | |
252b5132 | 3873 | |
8ded5a0f | 3874 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3875 | |
8ded5a0f | 3876 | /* Build the mapping. */ |
252b5132 | 3877 | |
8ded5a0f AM |
3878 | mfirst = NULL; |
3879 | pm = &mfirst; | |
252b5132 | 3880 | |
8ded5a0f AM |
3881 | /* If we have a .interp section, then create a PT_PHDR segment for |
3882 | the program headers and a PT_INTERP segment for the .interp | |
3883 | section. */ | |
3884 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3885 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3886 | { | |
3887 | amt = sizeof (struct elf_segment_map); | |
3888 | m = bfd_zalloc (abfd, amt); | |
3889 | if (m == NULL) | |
3890 | goto error_return; | |
3891 | m->next = NULL; | |
3892 | m->p_type = PT_PHDR; | |
3893 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3894 | m->p_flags = PF_R | PF_X; | |
3895 | m->p_flags_valid = 1; | |
3896 | m->includes_phdrs = 1; | |
252b5132 | 3897 | |
8ded5a0f AM |
3898 | *pm = m; |
3899 | pm = &m->next; | |
252b5132 | 3900 | |
8ded5a0f AM |
3901 | amt = sizeof (struct elf_segment_map); |
3902 | m = bfd_zalloc (abfd, amt); | |
3903 | if (m == NULL) | |
3904 | goto error_return; | |
3905 | m->next = NULL; | |
3906 | m->p_type = PT_INTERP; | |
3907 | m->count = 1; | |
3908 | m->sections[0] = s; | |
3909 | ||
3910 | *pm = m; | |
3911 | pm = &m->next; | |
252b5132 | 3912 | } |
8ded5a0f AM |
3913 | |
3914 | /* Look through the sections. We put sections in the same program | |
3915 | segment when the start of the second section can be placed within | |
3916 | a few bytes of the end of the first section. */ | |
3917 | last_hdr = NULL; | |
3918 | last_size = 0; | |
3919 | phdr_index = 0; | |
3920 | maxpagesize = bed->maxpagesize; | |
3921 | writable = FALSE; | |
3922 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3923 | if (dynsec != NULL | |
3924 | && (dynsec->flags & SEC_LOAD) == 0) | |
3925 | dynsec = NULL; | |
3926 | ||
3927 | /* Deal with -Ttext or something similar such that the first section | |
3928 | is not adjacent to the program headers. This is an | |
3929 | approximation, since at this point we don't know exactly how many | |
3930 | program headers we will need. */ | |
3931 | if (count > 0) | |
252b5132 | 3932 | { |
8ded5a0f AM |
3933 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3934 | ||
62d7a5f6 | 3935 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3936 | phdr_size = get_program_header_size (abfd, info); |
3937 | if ((abfd->flags & D_PAGED) == 0 | |
3938 | || sections[0]->lma < phdr_size | |
3939 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3940 | phdr_in_segment = FALSE; | |
252b5132 RH |
3941 | } |
3942 | ||
8ded5a0f | 3943 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3944 | { |
8ded5a0f AM |
3945 | asection *hdr; |
3946 | bfd_boolean new_segment; | |
3947 | ||
3948 | hdr = *hdrpp; | |
3949 | ||
3950 | /* See if this section and the last one will fit in the same | |
3951 | segment. */ | |
3952 | ||
3953 | if (last_hdr == NULL) | |
3954 | { | |
3955 | /* If we don't have a segment yet, then we don't need a new | |
3956 | one (we build the last one after this loop). */ | |
3957 | new_segment = FALSE; | |
3958 | } | |
3959 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3960 | { | |
3961 | /* If this section has a different relation between the | |
3962 | virtual address and the load address, then we need a new | |
3963 | segment. */ | |
3964 | new_segment = TRUE; | |
3965 | } | |
3966 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3967 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3968 | { | |
3969 | /* If putting this section in this segment would force us to | |
3970 | skip a page in the segment, then we need a new segment. */ | |
3971 | new_segment = TRUE; | |
3972 | } | |
3973 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3974 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3975 | { | |
3976 | /* We don't want to put a loadable section after a | |
3977 | nonloadable section in the same segment. | |
3978 | Consider .tbss sections as loadable for this purpose. */ | |
3979 | new_segment = TRUE; | |
3980 | } | |
3981 | else if ((abfd->flags & D_PAGED) == 0) | |
3982 | { | |
3983 | /* If the file is not demand paged, which means that we | |
3984 | don't require the sections to be correctly aligned in the | |
3985 | file, then there is no other reason for a new segment. */ | |
3986 | new_segment = FALSE; | |
3987 | } | |
3988 | else if (! writable | |
3989 | && (hdr->flags & SEC_READONLY) == 0 | |
3990 | && (((last_hdr->lma + last_size - 1) | |
3991 | & ~(maxpagesize - 1)) | |
3992 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3993 | { | |
3994 | /* We don't want to put a writable section in a read only | |
3995 | segment, unless they are on the same page in memory | |
3996 | anyhow. We already know that the last section does not | |
3997 | bring us past the current section on the page, so the | |
3998 | only case in which the new section is not on the same | |
3999 | page as the previous section is when the previous section | |
4000 | ends precisely on a page boundary. */ | |
4001 | new_segment = TRUE; | |
4002 | } | |
4003 | else | |
4004 | { | |
4005 | /* Otherwise, we can use the same segment. */ | |
4006 | new_segment = FALSE; | |
4007 | } | |
4008 | ||
2889e75b NC |
4009 | /* Allow interested parties a chance to override our decision. */ |
4010 | if (last_hdr && info->callbacks->override_segment_assignment) | |
4011 | new_segment = info->callbacks->override_segment_assignment (info, abfd, hdr, last_hdr, new_segment); | |
4012 | ||
8ded5a0f AM |
4013 | if (! new_segment) |
4014 | { | |
4015 | if ((hdr->flags & SEC_READONLY) == 0) | |
4016 | writable = TRUE; | |
4017 | last_hdr = hdr; | |
4018 | /* .tbss sections effectively have zero size. */ | |
4019 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
4020 | != SEC_THREAD_LOCAL) | |
4021 | last_size = hdr->size; | |
4022 | else | |
4023 | last_size = 0; | |
4024 | continue; | |
4025 | } | |
4026 | ||
4027 | /* We need a new program segment. We must create a new program | |
4028 | header holding all the sections from phdr_index until hdr. */ | |
4029 | ||
4030 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4031 | if (m == NULL) | |
4032 | goto error_return; | |
4033 | ||
4034 | *pm = m; | |
4035 | pm = &m->next; | |
4036 | ||
252b5132 | 4037 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 4038 | writable = TRUE; |
8ded5a0f AM |
4039 | else |
4040 | writable = FALSE; | |
4041 | ||
baaff79e JJ |
4042 | last_hdr = hdr; |
4043 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 4044 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 4045 | last_size = hdr->size; |
baaff79e JJ |
4046 | else |
4047 | last_size = 0; | |
8ded5a0f AM |
4048 | phdr_index = i; |
4049 | phdr_in_segment = FALSE; | |
252b5132 RH |
4050 | } |
4051 | ||
8ded5a0f AM |
4052 | /* Create a final PT_LOAD program segment. */ |
4053 | if (last_hdr != NULL) | |
4054 | { | |
4055 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4056 | if (m == NULL) | |
4057 | goto error_return; | |
252b5132 | 4058 | |
8ded5a0f AM |
4059 | *pm = m; |
4060 | pm = &m->next; | |
4061 | } | |
252b5132 | 4062 | |
8ded5a0f AM |
4063 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
4064 | if (dynsec != NULL) | |
4065 | { | |
4066 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
4067 | if (m == NULL) | |
4068 | goto error_return; | |
4069 | *pm = m; | |
4070 | pm = &m->next; | |
4071 | } | |
252b5132 | 4072 | |
8ded5a0f AM |
4073 | /* For each loadable .note section, add a PT_NOTE segment. We don't |
4074 | use bfd_get_section_by_name, because if we link together | |
4075 | nonloadable .note sections and loadable .note sections, we will | |
4076 | generate two .note sections in the output file. FIXME: Using | |
4077 | names for section types is bogus anyhow. */ | |
4078 | for (s = abfd->sections; s != NULL; s = s->next) | |
4079 | { | |
4080 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 4081 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
4082 | { |
4083 | amt = sizeof (struct elf_segment_map); | |
4084 | m = bfd_zalloc (abfd, amt); | |
4085 | if (m == NULL) | |
4086 | goto error_return; | |
4087 | m->next = NULL; | |
4088 | m->p_type = PT_NOTE; | |
4089 | m->count = 1; | |
4090 | m->sections[0] = s; | |
252b5132 | 4091 | |
8ded5a0f AM |
4092 | *pm = m; |
4093 | pm = &m->next; | |
4094 | } | |
4095 | if (s->flags & SEC_THREAD_LOCAL) | |
4096 | { | |
4097 | if (! tls_count) | |
4098 | first_tls = s; | |
4099 | tls_count++; | |
4100 | } | |
4101 | } | |
252b5132 | 4102 | |
8ded5a0f AM |
4103 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
4104 | if (tls_count > 0) | |
4105 | { | |
4106 | int i; | |
252b5132 | 4107 | |
8ded5a0f AM |
4108 | amt = sizeof (struct elf_segment_map); |
4109 | amt += (tls_count - 1) * sizeof (asection *); | |
4110 | m = bfd_zalloc (abfd, amt); | |
4111 | if (m == NULL) | |
4112 | goto error_return; | |
4113 | m->next = NULL; | |
4114 | m->p_type = PT_TLS; | |
4115 | m->count = tls_count; | |
4116 | /* Mandated PF_R. */ | |
4117 | m->p_flags = PF_R; | |
4118 | m->p_flags_valid = 1; | |
4119 | for (i = 0; i < tls_count; ++i) | |
4120 | { | |
4121 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
4122 | m->sections[i] = first_tls; | |
4123 | first_tls = first_tls->next; | |
4124 | } | |
252b5132 | 4125 | |
8ded5a0f AM |
4126 | *pm = m; |
4127 | pm = &m->next; | |
4128 | } | |
252b5132 | 4129 | |
8ded5a0f AM |
4130 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
4131 | segment. */ | |
4132 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
4133 | if (eh_frame_hdr != NULL | |
4134 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 4135 | { |
dc810e39 | 4136 | amt = sizeof (struct elf_segment_map); |
217aa764 | 4137 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
4138 | if (m == NULL) |
4139 | goto error_return; | |
4140 | m->next = NULL; | |
8ded5a0f | 4141 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 4142 | m->count = 1; |
8ded5a0f | 4143 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
4144 | |
4145 | *pm = m; | |
4146 | pm = &m->next; | |
4147 | } | |
13ae64f3 | 4148 | |
8ded5a0f | 4149 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 4150 | { |
8ded5a0f AM |
4151 | amt = sizeof (struct elf_segment_map); |
4152 | m = bfd_zalloc (abfd, amt); | |
4153 | if (m == NULL) | |
4154 | goto error_return; | |
4155 | m->next = NULL; | |
4156 | m->p_type = PT_GNU_STACK; | |
4157 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
4158 | m->p_flags_valid = 1; | |
252b5132 | 4159 | |
8ded5a0f AM |
4160 | *pm = m; |
4161 | pm = &m->next; | |
4162 | } | |
65765700 | 4163 | |
c9df6640 | 4164 | if (dynsec != NULL && elf_tdata (abfd)->relro) |
8ded5a0f | 4165 | { |
c9df6640 L |
4166 | /* We make a PT_GNU_RELRO segment only when there is a |
4167 | PT_DYNAMIC segment. */ | |
8ded5a0f AM |
4168 | amt = sizeof (struct elf_segment_map); |
4169 | m = bfd_zalloc (abfd, amt); | |
4170 | if (m == NULL) | |
4171 | goto error_return; | |
4172 | m->next = NULL; | |
4173 | m->p_type = PT_GNU_RELRO; | |
4174 | m->p_flags = PF_R; | |
4175 | m->p_flags_valid = 1; | |
65765700 | 4176 | |
8ded5a0f AM |
4177 | *pm = m; |
4178 | pm = &m->next; | |
4179 | } | |
9ee5e499 | 4180 | |
8ded5a0f AM |
4181 | free (sections); |
4182 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
4183 | } |
4184 | ||
8ded5a0f AM |
4185 | if (!elf_modify_segment_map (abfd, info)) |
4186 | return FALSE; | |
8c37241b | 4187 | |
8ded5a0f AM |
4188 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4189 | ++count; | |
4190 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 4191 | |
b34976b6 | 4192 | return TRUE; |
252b5132 RH |
4193 | |
4194 | error_return: | |
4195 | if (sections != NULL) | |
4196 | free (sections); | |
b34976b6 | 4197 | return FALSE; |
252b5132 RH |
4198 | } |
4199 | ||
4200 | /* Sort sections by address. */ | |
4201 | ||
4202 | static int | |
217aa764 | 4203 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4204 | { |
4205 | const asection *sec1 = *(const asection **) arg1; | |
4206 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4207 | bfd_size_type size1, size2; |
252b5132 RH |
4208 | |
4209 | /* Sort by LMA first, since this is the address used to | |
4210 | place the section into a segment. */ | |
4211 | if (sec1->lma < sec2->lma) | |
4212 | return -1; | |
4213 | else if (sec1->lma > sec2->lma) | |
4214 | return 1; | |
4215 | ||
4216 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4217 | the same, and this will do nothing. */ | |
4218 | if (sec1->vma < sec2->vma) | |
4219 | return -1; | |
4220 | else if (sec1->vma > sec2->vma) | |
4221 | return 1; | |
4222 | ||
4223 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4224 | ||
07c6e936 | 4225 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4226 | |
4227 | if (TOEND (sec1)) | |
4228 | { | |
4229 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4230 | { |
4231 | /* If the indicies are the same, do not return 0 | |
4232 | here, but continue to try the next comparison. */ | |
4233 | if (sec1->target_index - sec2->target_index != 0) | |
4234 | return sec1->target_index - sec2->target_index; | |
4235 | } | |
252b5132 RH |
4236 | else |
4237 | return 1; | |
4238 | } | |
00a7cdc5 | 4239 | else if (TOEND (sec2)) |
252b5132 RH |
4240 | return -1; |
4241 | ||
4242 | #undef TOEND | |
4243 | ||
00a7cdc5 NC |
4244 | /* Sort by size, to put zero sized sections |
4245 | before others at the same address. */ | |
252b5132 | 4246 | |
eea6121a AM |
4247 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4248 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4249 | |
4250 | if (size1 < size2) | |
252b5132 | 4251 | return -1; |
eecdbe52 | 4252 | if (size1 > size2) |
252b5132 RH |
4253 | return 1; |
4254 | ||
4255 | return sec1->target_index - sec2->target_index; | |
4256 | } | |
4257 | ||
340b6d91 AC |
4258 | /* Ian Lance Taylor writes: |
4259 | ||
4260 | We shouldn't be using % with a negative signed number. That's just | |
4261 | not good. We have to make sure either that the number is not | |
4262 | negative, or that the number has an unsigned type. When the types | |
4263 | are all the same size they wind up as unsigned. When file_ptr is a | |
4264 | larger signed type, the arithmetic winds up as signed long long, | |
4265 | which is wrong. | |
4266 | ||
4267 | What we're trying to say here is something like ``increase OFF by | |
4268 | the least amount that will cause it to be equal to the VMA modulo | |
4269 | the page size.'' */ | |
4270 | /* In other words, something like: | |
4271 | ||
4272 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4273 | off_offset = off % bed->maxpagesize; | |
4274 | if (vma_offset < off_offset) | |
4275 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4276 | else | |
4277 | adjustment = vma_offset - off_offset; | |
08a40648 | 4278 | |
340b6d91 AC |
4279 | which can can be collapsed into the expression below. */ |
4280 | ||
4281 | static file_ptr | |
4282 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4283 | { | |
4284 | return ((vma - off) % maxpagesize); | |
4285 | } | |
4286 | ||
252b5132 RH |
4287 | /* Assign file positions to the sections based on the mapping from |
4288 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4289 | the file header. */ |
252b5132 | 4290 | |
b34976b6 | 4291 | static bfd_boolean |
f3520d2f AM |
4292 | assign_file_positions_for_load_sections (bfd *abfd, |
4293 | struct bfd_link_info *link_info) | |
252b5132 RH |
4294 | { |
4295 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4296 | struct elf_segment_map *m; |
252b5132 | 4297 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4298 | Elf_Internal_Phdr *p; |
02bf8d82 | 4299 | file_ptr off; |
3f570048 | 4300 | bfd_size_type maxpagesize; |
f3520d2f | 4301 | unsigned int alloc; |
0920dee7 | 4302 | unsigned int i, j; |
252b5132 | 4303 | |
e36284ab AM |
4304 | if (link_info == NULL |
4305 | && !elf_modify_segment_map (abfd, link_info)) | |
8ded5a0f | 4306 | return FALSE; |
252b5132 | 4307 | |
8ded5a0f | 4308 | alloc = 0; |
252b5132 | 4309 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4310 | ++alloc; |
252b5132 RH |
4311 | |
4312 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4313 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4314 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4315 | |
62d7a5f6 | 4316 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4317 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4318 | else | |
4319 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4320 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4321 | |
4322 | if (alloc == 0) | |
f3520d2f | 4323 | { |
8ded5a0f AM |
4324 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4325 | return TRUE; | |
f3520d2f | 4326 | } |
252b5132 | 4327 | |
d0fb9a8d | 4328 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4329 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4330 | if (phdrs == NULL) |
b34976b6 | 4331 | return FALSE; |
252b5132 | 4332 | |
3f570048 AM |
4333 | maxpagesize = 1; |
4334 | if ((abfd->flags & D_PAGED) != 0) | |
4335 | maxpagesize = bed->maxpagesize; | |
4336 | ||
252b5132 RH |
4337 | off = bed->s->sizeof_ehdr; |
4338 | off += alloc * bed->s->sizeof_phdr; | |
4339 | ||
0920dee7 | 4340 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4341 | m != NULL; |
0920dee7 | 4342 | m = m->next, p++, j++) |
252b5132 | 4343 | { |
252b5132 | 4344 | asection **secpp; |
bf988460 AM |
4345 | bfd_vma off_adjust; |
4346 | bfd_boolean no_contents; | |
252b5132 RH |
4347 | |
4348 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4349 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4350 | not be done to the PT_NOTE section of a corefile, which may |
4351 | contain several pseudo-sections artificially created by bfd. | |
4352 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4353 | if (m->count > 1 |
4354 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4355 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4356 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4357 | elf_sort_sections); | |
4358 | ||
b301b248 AM |
4359 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4360 | number of sections with contents contributing to both p_filesz | |
4361 | and p_memsz, followed by a number of sections with no contents | |
4362 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4363 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4364 | p->p_type = m->p_type; |
28a7f3e7 | 4365 | p->p_flags = m->p_flags; |
252b5132 | 4366 | |
3f570048 AM |
4367 | if (m->count == 0) |
4368 | p->p_vaddr = 0; | |
4369 | else | |
3271a814 | 4370 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4371 | |
4372 | if (m->p_paddr_valid) | |
4373 | p->p_paddr = m->p_paddr; | |
4374 | else if (m->count == 0) | |
4375 | p->p_paddr = 0; | |
4376 | else | |
08a40648 | 4377 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4378 | |
4379 | if (p->p_type == PT_LOAD | |
4380 | && (abfd->flags & D_PAGED) != 0) | |
4381 | { | |
4382 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4383 | the maximum page size. When copying an executable with | |
4384 | objcopy, we set m->p_align from the input file. Use this | |
4385 | value for maxpagesize rather than bed->maxpagesize, which | |
4386 | may be different. Note that we use maxpagesize for PT_TLS | |
4387 | segment alignment later in this function, so we are relying | |
4388 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4389 | segment. */ | |
4390 | if (m->p_align_valid) | |
4391 | maxpagesize = m->p_align; | |
4392 | ||
4393 | p->p_align = maxpagesize; | |
4394 | } | |
4395 | else if (m->count == 0) | |
4396 | p->p_align = 1 << bed->s->log_file_align; | |
3271a814 NS |
4397 | else if (m->p_align_valid) |
4398 | p->p_align = m->p_align; | |
3f570048 AM |
4399 | else |
4400 | p->p_align = 0; | |
4401 | ||
bf988460 AM |
4402 | no_contents = FALSE; |
4403 | off_adjust = 0; | |
252b5132 | 4404 | if (p->p_type == PT_LOAD |
b301b248 | 4405 | && m->count > 0) |
252b5132 | 4406 | { |
b301b248 | 4407 | bfd_size_type align; |
a49e53ed | 4408 | unsigned int align_power = 0; |
b301b248 | 4409 | |
3271a814 NS |
4410 | if (m->p_align_valid) |
4411 | align = p->p_align; | |
4412 | else | |
252b5132 | 4413 | { |
3271a814 NS |
4414 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4415 | { | |
4416 | unsigned int secalign; | |
08a40648 | 4417 | |
3271a814 NS |
4418 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4419 | if (secalign > align_power) | |
4420 | align_power = secalign; | |
4421 | } | |
4422 | align = (bfd_size_type) 1 << align_power; | |
4423 | if (align < maxpagesize) | |
4424 | align = maxpagesize; | |
b301b248 | 4425 | } |
252b5132 | 4426 | |
02bf8d82 AM |
4427 | for (i = 0; i < m->count; i++) |
4428 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4429 | /* If we aren't making room for this section, then | |
4430 | it must be SHT_NOBITS regardless of what we've | |
4431 | set via struct bfd_elf_special_section. */ | |
4432 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4433 | ||
bf988460 AM |
4434 | /* Find out whether this segment contains any loadable |
4435 | sections. If the first section isn't loadable, the same | |
4436 | holds for any other sections. */ | |
4437 | i = 0; | |
4438 | while (elf_section_type (m->sections[i]) == SHT_NOBITS) | |
b301b248 | 4439 | { |
bf988460 AM |
4440 | /* If a segment starts with .tbss, we need to look |
4441 | at the next section to decide whether the segment | |
4442 | has any loadable sections. */ | |
4443 | if ((elf_section_flags (m->sections[i]) & SHF_TLS) == 0 | |
4444 | || ++i >= m->count) | |
b301b248 | 4445 | { |
bf988460 AM |
4446 | no_contents = TRUE; |
4447 | break; | |
b301b248 | 4448 | } |
252b5132 | 4449 | } |
bf988460 AM |
4450 | |
4451 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4452 | off += off_adjust; | |
4453 | if (no_contents) | |
4454 | { | |
4455 | /* We shouldn't need to align the segment on disk since | |
4456 | the segment doesn't need file space, but the gABI | |
4457 | arguably requires the alignment and glibc ld.so | |
4458 | checks it. So to comply with the alignment | |
4459 | requirement but not waste file space, we adjust | |
4460 | p_offset for just this segment. (OFF_ADJUST is | |
4461 | subtracted from OFF later.) This may put p_offset | |
4462 | past the end of file, but that shouldn't matter. */ | |
4463 | } | |
4464 | else | |
4465 | off_adjust = 0; | |
252b5132 | 4466 | } |
b1a6d0b1 NC |
4467 | /* Make sure the .dynamic section is the first section in the |
4468 | PT_DYNAMIC segment. */ | |
4469 | else if (p->p_type == PT_DYNAMIC | |
4470 | && m->count > 1 | |
4471 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4472 | { | |
4473 | _bfd_error_handler | |
b301b248 AM |
4474 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4475 | abfd); | |
b1a6d0b1 NC |
4476 | bfd_set_error (bfd_error_bad_value); |
4477 | return FALSE; | |
4478 | } | |
252b5132 | 4479 | |
252b5132 RH |
4480 | p->p_offset = 0; |
4481 | p->p_filesz = 0; | |
4482 | p->p_memsz = 0; | |
4483 | ||
4484 | if (m->includes_filehdr) | |
4485 | { | |
bf988460 | 4486 | if (!m->p_flags_valid) |
252b5132 | 4487 | p->p_flags |= PF_R; |
252b5132 RH |
4488 | p->p_filesz = bed->s->sizeof_ehdr; |
4489 | p->p_memsz = bed->s->sizeof_ehdr; | |
4490 | if (m->count > 0) | |
4491 | { | |
4492 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4493 | ||
4494 | if (p->p_vaddr < (bfd_vma) off) | |
4495 | { | |
caf47ea6 | 4496 | (*_bfd_error_handler) |
b301b248 AM |
4497 | (_("%B: Not enough room for program headers, try linking with -N"), |
4498 | abfd); | |
252b5132 | 4499 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4500 | return FALSE; |
252b5132 RH |
4501 | } |
4502 | ||
4503 | p->p_vaddr -= off; | |
bf988460 | 4504 | if (!m->p_paddr_valid) |
252b5132 RH |
4505 | p->p_paddr -= off; |
4506 | } | |
252b5132 RH |
4507 | } |
4508 | ||
4509 | if (m->includes_phdrs) | |
4510 | { | |
bf988460 | 4511 | if (!m->p_flags_valid) |
252b5132 RH |
4512 | p->p_flags |= PF_R; |
4513 | ||
f3520d2f | 4514 | if (!m->includes_filehdr) |
252b5132 RH |
4515 | { |
4516 | p->p_offset = bed->s->sizeof_ehdr; | |
4517 | ||
4518 | if (m->count > 0) | |
4519 | { | |
4520 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4521 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4522 | if (!m->p_paddr_valid) |
252b5132 RH |
4523 | p->p_paddr -= off - p->p_offset; |
4524 | } | |
252b5132 RH |
4525 | } |
4526 | ||
4527 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4528 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4529 | } | |
4530 | ||
4531 | if (p->p_type == PT_LOAD | |
4532 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4533 | { | |
bf988460 | 4534 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4535 | p->p_offset = off; |
252b5132 RH |
4536 | else |
4537 | { | |
4538 | file_ptr adjust; | |
4539 | ||
4540 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4541 | if (!no_contents) |
4542 | p->p_filesz += adjust; | |
252b5132 RH |
4543 | p->p_memsz += adjust; |
4544 | } | |
4545 | } | |
4546 | ||
1ea63fd2 AM |
4547 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4548 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4549 | core files, for sections in PT_NOTE segments. | |
4550 | assign_file_positions_for_non_load_sections will set filepos | |
4551 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4552 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4553 | { | |
4554 | asection *sec; | |
252b5132 | 4555 | bfd_size_type align; |
627b32bc | 4556 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4557 | |
4558 | sec = *secpp; | |
02bf8d82 | 4559 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4560 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4561 | |
b301b248 AM |
4562 | if (p->p_type == PT_LOAD |
4563 | || p->p_type == PT_TLS) | |
252b5132 | 4564 | { |
8c252fd9 | 4565 | bfd_signed_vma adjust = sec->lma - (p->p_paddr + p->p_memsz); |
252b5132 | 4566 | |
02bf8d82 AM |
4567 | if (this_hdr->sh_type != SHT_NOBITS |
4568 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4569 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
0e922b77 | 4570 | || p->p_type == PT_TLS))) |
252b5132 | 4571 | { |
252b5132 | 4572 | if (adjust < 0) |
b301b248 AM |
4573 | { |
4574 | (*_bfd_error_handler) | |
4575 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4576 | abfd, sec, (unsigned long) sec->lma); | |
4577 | adjust = 0; | |
4578 | } | |
252b5132 | 4579 | p->p_memsz += adjust; |
0e922b77 | 4580 | |
02bf8d82 | 4581 | if (this_hdr->sh_type != SHT_NOBITS) |
0e922b77 AM |
4582 | { |
4583 | off += adjust; | |
4584 | p->p_filesz += adjust; | |
4585 | } | |
252b5132 | 4586 | } |
252b5132 RH |
4587 | } |
4588 | ||
4589 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4590 | { | |
b301b248 AM |
4591 | /* The section at i == 0 is the one that actually contains |
4592 | everything. */ | |
4a938328 MS |
4593 | if (i == 0) |
4594 | { | |
627b32bc | 4595 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4596 | off += this_hdr->sh_size; |
4597 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4598 | p->p_memsz = 0; |
4599 | p->p_align = 1; | |
252b5132 | 4600 | } |
4a938328 | 4601 | else |
252b5132 | 4602 | { |
b301b248 | 4603 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4604 | sec->filepos = 0; |
eea6121a | 4605 | sec->size = 0; |
b301b248 AM |
4606 | sec->flags = 0; |
4607 | continue; | |
252b5132 | 4608 | } |
252b5132 RH |
4609 | } |
4610 | else | |
4611 | { | |
b301b248 AM |
4612 | if (p->p_type == PT_LOAD) |
4613 | { | |
02bf8d82 AM |
4614 | this_hdr->sh_offset = sec->filepos = off; |
4615 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4616 | off += this_hdr->sh_size; |
b301b248 | 4617 | } |
252b5132 | 4618 | |
02bf8d82 | 4619 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4620 | { |
6a3cd2b4 | 4621 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4622 | /* A load section without SHF_ALLOC is something like |
4623 | a note section in a PT_NOTE segment. These take | |
4624 | file space but are not loaded into memory. */ | |
4625 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4626 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4627 | } |
6a3cd2b4 | 4628 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4629 | { |
6a3cd2b4 AM |
4630 | if (p->p_type == PT_TLS) |
4631 | p->p_memsz += this_hdr->sh_size; | |
4632 | ||
4633 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4634 | normal segments. */ | |
4635 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4636 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4637 | } |
4638 | ||
c9df6640 L |
4639 | if (p->p_type == PT_GNU_RELRO) |
4640 | p->p_align = 1; | |
4641 | else if (align > p->p_align | |
3271a814 | 4642 | && !m->p_align_valid |
c9df6640 L |
4643 | && (p->p_type != PT_LOAD |
4644 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4645 | p->p_align = align; |
4646 | } | |
4647 | ||
bf988460 | 4648 | if (!m->p_flags_valid) |
252b5132 RH |
4649 | { |
4650 | p->p_flags |= PF_R; | |
02bf8d82 | 4651 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4652 | p->p_flags |= PF_X; |
02bf8d82 | 4653 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4654 | p->p_flags |= PF_W; |
4655 | } | |
4656 | } | |
bf988460 | 4657 | off -= off_adjust; |
0920dee7 | 4658 | |
7c928300 AM |
4659 | /* Check that all sections are in a PT_LOAD segment. |
4660 | Don't check funky gdb generated core files. */ | |
4661 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4662 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4663 | { | |
4664 | Elf_Internal_Shdr *this_hdr; | |
4665 | asection *sec; | |
4666 | ||
4667 | sec = *secpp; | |
4668 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4669 | if (this_hdr->sh_size != 0 | |
4670 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4671 | { | |
4672 | (*_bfd_error_handler) | |
4673 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4674 | abfd, sec, j); | |
4675 | bfd_set_error (bfd_error_bad_value); | |
4676 | return FALSE; | |
4677 | } | |
4678 | } | |
252b5132 RH |
4679 | } |
4680 | ||
f3520d2f AM |
4681 | elf_tdata (abfd)->next_file_pos = off; |
4682 | return TRUE; | |
4683 | } | |
4684 | ||
4685 | /* Assign file positions for the other sections. */ | |
4686 | ||
4687 | static bfd_boolean | |
4688 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4689 | struct bfd_link_info *link_info) | |
4690 | { | |
4691 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4692 | Elf_Internal_Shdr **i_shdrpp; | |
4693 | Elf_Internal_Shdr **hdrpp; | |
4694 | Elf_Internal_Phdr *phdrs; | |
4695 | Elf_Internal_Phdr *p; | |
4696 | struct elf_segment_map *m; | |
4697 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4698 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4699 | file_ptr off; | |
4700 | unsigned int num_sec; | |
4701 | unsigned int i; | |
4702 | unsigned int count; | |
4703 | ||
5c182d5f AM |
4704 | i_shdrpp = elf_elfsections (abfd); |
4705 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4706 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4707 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4708 | { | |
4709 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4710 | Elf_Internal_Shdr *hdr; | |
4711 | ||
4712 | hdr = *hdrpp; | |
4713 | if (hdr->bfd_section != NULL | |
252e386e AM |
4714 | && (hdr->bfd_section->filepos != 0 |
4715 | || (hdr->sh_type == SHT_NOBITS | |
4716 | && hdr->contents == NULL))) | |
627b32bc | 4717 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4718 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4719 | { | |
49c13adb L |
4720 | if (hdr->sh_size != 0) |
4721 | ((*_bfd_error_handler) | |
4722 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4723 | abfd, |
4724 | (hdr->bfd_section == NULL | |
4725 | ? "*unknown*" | |
4726 | : hdr->bfd_section->name))); | |
4727 | /* We don't need to page align empty sections. */ | |
4728 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4729 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4730 | bed->maxpagesize); | |
4731 | else | |
4732 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4733 | hdr->sh_addralign); | |
4734 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4735 | FALSE); | |
4736 | } | |
4737 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4738 | && hdr->bfd_section == NULL) | |
4739 | || hdr == i_shdrpp[tdata->symtab_section] | |
4740 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4741 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4742 | hdr->sh_offset = -1; | |
4743 | else | |
4744 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4745 | ||
4746 | if (i == SHN_LORESERVE - 1) | |
4747 | { | |
4748 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4749 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4750 | } | |
4751 | } | |
4752 | ||
252b5132 RH |
4753 | /* Now that we have set the section file positions, we can set up |
4754 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4755 | count = 0; |
4756 | filehdr_vaddr = 0; | |
4757 | filehdr_paddr = 0; | |
4758 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4759 | phdrs_paddr = 0; | |
4760 | phdrs = elf_tdata (abfd)->phdr; | |
4761 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4762 | m != NULL; | |
4763 | m = m->next, p++) | |
4764 | { | |
4765 | ++count; | |
4766 | if (p->p_type != PT_LOAD) | |
4767 | continue; | |
4768 | ||
4769 | if (m->includes_filehdr) | |
4770 | { | |
4771 | filehdr_vaddr = p->p_vaddr; | |
4772 | filehdr_paddr = p->p_paddr; | |
4773 | } | |
4774 | if (m->includes_phdrs) | |
4775 | { | |
4776 | phdrs_vaddr = p->p_vaddr; | |
4777 | phdrs_paddr = p->p_paddr; | |
4778 | if (m->includes_filehdr) | |
4779 | { | |
4780 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4781 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4782 | } | |
4783 | } | |
4784 | } | |
4785 | ||
252b5132 RH |
4786 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4787 | m != NULL; | |
4788 | m = m->next, p++) | |
4789 | { | |
1ea63fd2 | 4790 | if (m->count != 0) |
252b5132 | 4791 | { |
1ea63fd2 AM |
4792 | if (p->p_type != PT_LOAD |
4793 | && (p->p_type != PT_NOTE || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4794 | { |
1ea63fd2 AM |
4795 | Elf_Internal_Shdr *hdr; |
4796 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4797 | ||
4798 | hdr = &elf_section_data (m->sections[m->count - 1])->this_hdr; | |
4799 | p->p_filesz = (m->sections[m->count - 1]->filepos | |
4800 | - m->sections[0]->filepos); | |
4801 | if (hdr->sh_type != SHT_NOBITS) | |
4802 | p->p_filesz += hdr->sh_size; | |
4803 | ||
4804 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4805 | } |
252b5132 | 4806 | } |
1ea63fd2 | 4807 | else |
252b5132 RH |
4808 | { |
4809 | if (m->includes_filehdr) | |
4810 | { | |
4811 | p->p_vaddr = filehdr_vaddr; | |
4812 | if (! m->p_paddr_valid) | |
4813 | p->p_paddr = filehdr_paddr; | |
4814 | } | |
4815 | else if (m->includes_phdrs) | |
4816 | { | |
4817 | p->p_vaddr = phdrs_vaddr; | |
4818 | if (! m->p_paddr_valid) | |
4819 | p->p_paddr = phdrs_paddr; | |
4820 | } | |
8c37241b JJ |
4821 | else if (p->p_type == PT_GNU_RELRO) |
4822 | { | |
4823 | Elf_Internal_Phdr *lp; | |
4824 | ||
4825 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4826 | { | |
4827 | if (lp->p_type == PT_LOAD | |
4828 | && lp->p_vaddr <= link_info->relro_end | |
4829 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4830 | && (lp->p_vaddr + lp->p_filesz |
4831 | >= link_info->relro_end)) | |
8c37241b JJ |
4832 | break; |
4833 | } | |
4834 | ||
4835 | if (lp < phdrs + count | |
4836 | && link_info->relro_end > lp->p_vaddr) | |
4837 | { | |
4838 | p->p_vaddr = lp->p_vaddr; | |
4839 | p->p_paddr = lp->p_paddr; | |
4840 | p->p_offset = lp->p_offset; | |
4841 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4842 | p->p_memsz = p->p_filesz; | |
4843 | p->p_align = 1; | |
4844 | p->p_flags = (lp->p_flags & ~PF_W); | |
4845 | } | |
4846 | else | |
4847 | { | |
4848 | memset (p, 0, sizeof *p); | |
4849 | p->p_type = PT_NULL; | |
4850 | } | |
4851 | } | |
252b5132 RH |
4852 | } |
4853 | } | |
4854 | ||
252b5132 RH |
4855 | elf_tdata (abfd)->next_file_pos = off; |
4856 | ||
b34976b6 | 4857 | return TRUE; |
252b5132 RH |
4858 | } |
4859 | ||
252b5132 RH |
4860 | /* Work out the file positions of all the sections. This is called by |
4861 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4862 | VMAs must be known before this is called. | |
4863 | ||
e0638f70 AM |
4864 | Reloc sections come in two flavours: Those processed specially as |
4865 | "side-channel" data attached to a section to which they apply, and | |
4866 | those that bfd doesn't process as relocations. The latter sort are | |
4867 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4868 | consider the former sort here, unless they form part of the loadable | |
4869 | image. Reloc sections not assigned here will be handled later by | |
4870 | assign_file_positions_for_relocs. | |
252b5132 RH |
4871 | |
4872 | We also don't set the positions of the .symtab and .strtab here. */ | |
4873 | ||
b34976b6 | 4874 | static bfd_boolean |
c84fca4d AO |
4875 | assign_file_positions_except_relocs (bfd *abfd, |
4876 | struct bfd_link_info *link_info) | |
252b5132 | 4877 | { |
5c182d5f AM |
4878 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4879 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4880 | file_ptr off; |
9c5bfbb7 | 4881 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4882 | |
4883 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4884 | && bfd_get_format (abfd) != bfd_core) | |
4885 | { | |
5c182d5f AM |
4886 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4887 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4888 | Elf_Internal_Shdr **hdrpp; |
4889 | unsigned int i; | |
4890 | ||
4891 | /* Start after the ELF header. */ | |
4892 | off = i_ehdrp->e_ehsize; | |
4893 | ||
4894 | /* We are not creating an executable, which means that we are | |
4895 | not creating a program header, and that the actual order of | |
4896 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4897 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4898 | { |
4899 | Elf_Internal_Shdr *hdr; | |
4900 | ||
4901 | hdr = *hdrpp; | |
e0638f70 AM |
4902 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4903 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4904 | || i == tdata->symtab_section |
4905 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4906 | || i == tdata->strtab_section) |
4907 | { | |
4908 | hdr->sh_offset = -1; | |
252b5132 | 4909 | } |
9ad5cbcf | 4910 | else |
b34976b6 | 4911 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4912 | |
9ad5cbcf AM |
4913 | if (i == SHN_LORESERVE - 1) |
4914 | { | |
4915 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4916 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4917 | } | |
252b5132 RH |
4918 | } |
4919 | } | |
4920 | else | |
4921 | { | |
f3520d2f AM |
4922 | unsigned int alloc; |
4923 | ||
252b5132 | 4924 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4925 | assignment of sections to segments. */ |
f3520d2f AM |
4926 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4927 | return FALSE; | |
4928 | ||
4929 | /* And for non-load sections. */ | |
4930 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4931 | return FALSE; | |
4932 | ||
e36284ab AM |
4933 | if (bed->elf_backend_modify_program_headers != NULL) |
4934 | { | |
4935 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4936 | return FALSE; | |
4937 | } | |
4938 | ||
f3520d2f AM |
4939 | /* Write out the program headers. */ |
4940 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4941 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4942 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4943 | return FALSE; |
252b5132 | 4944 | |
5c182d5f | 4945 | off = tdata->next_file_pos; |
252b5132 RH |
4946 | } |
4947 | ||
4948 | /* Place the section headers. */ | |
45d6a902 | 4949 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4950 | i_ehdrp->e_shoff = off; |
4951 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4952 | ||
5c182d5f | 4953 | tdata->next_file_pos = off; |
252b5132 | 4954 | |
b34976b6 | 4955 | return TRUE; |
252b5132 RH |
4956 | } |
4957 | ||
b34976b6 | 4958 | static bfd_boolean |
217aa764 | 4959 | prep_headers (bfd *abfd) |
252b5132 RH |
4960 | { |
4961 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4962 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4963 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4964 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4965 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4966 | |
4967 | i_ehdrp = elf_elfheader (abfd); | |
4968 | i_shdrp = elf_elfsections (abfd); | |
4969 | ||
2b0f7ef9 | 4970 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4971 | if (shstrtab == NULL) |
b34976b6 | 4972 | return FALSE; |
252b5132 RH |
4973 | |
4974 | elf_shstrtab (abfd) = shstrtab; | |
4975 | ||
4976 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4977 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4978 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4979 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4980 | ||
4981 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4982 | i_ehdrp->e_ident[EI_DATA] = | |
4983 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4984 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4985 | ||
252b5132 RH |
4986 | if ((abfd->flags & DYNAMIC) != 0) |
4987 | i_ehdrp->e_type = ET_DYN; | |
4988 | else if ((abfd->flags & EXEC_P) != 0) | |
4989 | i_ehdrp->e_type = ET_EXEC; | |
4990 | else if (bfd_get_format (abfd) == bfd_core) | |
4991 | i_ehdrp->e_type = ET_CORE; | |
4992 | else | |
4993 | i_ehdrp->e_type = ET_REL; | |
4994 | ||
4995 | switch (bfd_get_arch (abfd)) | |
4996 | { | |
4997 | case bfd_arch_unknown: | |
4998 | i_ehdrp->e_machine = EM_NONE; | |
4999 | break; | |
aa4f99bb AO |
5000 | |
5001 | /* There used to be a long list of cases here, each one setting | |
5002 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
5003 | in the corresponding bfd definition. To avoid duplication, | |
5004 | the switch was removed. Machines that need special handling | |
5005 | can generally do it in elf_backend_final_write_processing(), | |
5006 | unless they need the information earlier than the final write. | |
5007 | Such need can generally be supplied by replacing the tests for | |
5008 | e_machine with the conditions used to determine it. */ | |
252b5132 | 5009 | default: |
9c5bfbb7 AM |
5010 | i_ehdrp->e_machine = bed->elf_machine_code; |
5011 | } | |
aa4f99bb | 5012 | |
252b5132 RH |
5013 | i_ehdrp->e_version = bed->s->ev_current; |
5014 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
5015 | ||
c044fabd | 5016 | /* No program header, for now. */ |
252b5132 RH |
5017 | i_ehdrp->e_phoff = 0; |
5018 | i_ehdrp->e_phentsize = 0; | |
5019 | i_ehdrp->e_phnum = 0; | |
5020 | ||
c044fabd | 5021 | /* Each bfd section is section header entry. */ |
252b5132 RH |
5022 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
5023 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
5024 | ||
c044fabd | 5025 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 5026 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
5027 | /* It all happens later. */ |
5028 | ; | |
252b5132 RH |
5029 | else |
5030 | { | |
5031 | i_ehdrp->e_phentsize = 0; | |
5032 | i_phdrp = 0; | |
5033 | i_ehdrp->e_phoff = 0; | |
5034 | } | |
5035 | ||
5036 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 5037 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 5038 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 5039 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 5040 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 5041 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
5042 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
5043 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
5044 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 5045 | return FALSE; |
252b5132 | 5046 | |
b34976b6 | 5047 | return TRUE; |
252b5132 RH |
5048 | } |
5049 | ||
5050 | /* Assign file positions for all the reloc sections which are not part | |
5051 | of the loadable file image. */ | |
5052 | ||
5053 | void | |
217aa764 | 5054 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
5055 | { |
5056 | file_ptr off; | |
9ad5cbcf | 5057 | unsigned int i, num_sec; |
252b5132 RH |
5058 | Elf_Internal_Shdr **shdrpp; |
5059 | ||
5060 | off = elf_tdata (abfd)->next_file_pos; | |
5061 | ||
9ad5cbcf AM |
5062 | num_sec = elf_numsections (abfd); |
5063 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
5064 | { |
5065 | Elf_Internal_Shdr *shdrp; | |
5066 | ||
5067 | shdrp = *shdrpp; | |
5068 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
5069 | && shdrp->sh_offset == -1) | |
b34976b6 | 5070 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
5071 | } |
5072 | ||
5073 | elf_tdata (abfd)->next_file_pos = off; | |
5074 | } | |
5075 | ||
b34976b6 | 5076 | bfd_boolean |
217aa764 | 5077 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 5078 | { |
9c5bfbb7 | 5079 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
5080 | Elf_Internal_Ehdr *i_ehdrp; |
5081 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 5082 | bfd_boolean failed; |
9ad5cbcf | 5083 | unsigned int count, num_sec; |
252b5132 RH |
5084 | |
5085 | if (! abfd->output_has_begun | |
217aa764 | 5086 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5087 | return FALSE; |
252b5132 RH |
5088 | |
5089 | i_shdrp = elf_elfsections (abfd); | |
5090 | i_ehdrp = elf_elfheader (abfd); | |
5091 | ||
b34976b6 | 5092 | failed = FALSE; |
252b5132 RH |
5093 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5094 | if (failed) | |
b34976b6 | 5095 | return FALSE; |
252b5132 RH |
5096 | |
5097 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
5098 | ||
c044fabd | 5099 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5100 | num_sec = elf_numsections (abfd); |
5101 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
5102 | { |
5103 | if (bed->elf_backend_section_processing) | |
5104 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
5105 | if (i_shdrp[count]->contents) | |
5106 | { | |
dc810e39 AM |
5107 | bfd_size_type amt = i_shdrp[count]->sh_size; |
5108 | ||
252b5132 | 5109 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 5110 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 5111 | return FALSE; |
252b5132 | 5112 | } |
9ad5cbcf AM |
5113 | if (count == SHN_LORESERVE - 1) |
5114 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
5115 | } |
5116 | ||
5117 | /* Write out the section header names. */ | |
26ae6d5e DJ |
5118 | if (elf_shstrtab (abfd) != NULL |
5119 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 5120 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 5121 | return FALSE; |
252b5132 RH |
5122 | |
5123 | if (bed->elf_backend_final_write_processing) | |
5124 | (*bed->elf_backend_final_write_processing) (abfd, | |
5125 | elf_tdata (abfd)->linker); | |
5126 | ||
5127 | return bed->s->write_shdrs_and_ehdr (abfd); | |
5128 | } | |
5129 | ||
b34976b6 | 5130 | bfd_boolean |
217aa764 | 5131 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5132 | { |
c044fabd | 5133 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5134 | return _bfd_elf_write_object_contents (abfd); |
5135 | } | |
c044fabd KH |
5136 | |
5137 | /* Given a section, search the header to find them. */ | |
5138 | ||
252b5132 | 5139 | int |
198beae2 | 5140 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5141 | { |
9c5bfbb7 | 5142 | const struct elf_backend_data *bed; |
252b5132 | 5143 | int index; |
252b5132 | 5144 | |
9ad5cbcf AM |
5145 | if (elf_section_data (asect) != NULL |
5146 | && elf_section_data (asect)->this_idx != 0) | |
5147 | return elf_section_data (asect)->this_idx; | |
5148 | ||
5149 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5150 | index = SHN_ABS; |
5151 | else if (bfd_is_com_section (asect)) | |
5152 | index = SHN_COMMON; | |
5153 | else if (bfd_is_und_section (asect)) | |
5154 | index = SHN_UNDEF; | |
5155 | else | |
6dc132d9 | 5156 | index = -1; |
252b5132 | 5157 | |
af746e92 | 5158 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5159 | if (bed->elf_backend_section_from_bfd_section) |
5160 | { | |
af746e92 | 5161 | int retval = index; |
9ad5cbcf | 5162 | |
af746e92 AM |
5163 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5164 | return retval; | |
252b5132 RH |
5165 | } |
5166 | ||
af746e92 AM |
5167 | if (index == -1) |
5168 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 5169 | |
af746e92 | 5170 | return index; |
252b5132 RH |
5171 | } |
5172 | ||
5173 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5174 | on error. */ | |
5175 | ||
5176 | int | |
217aa764 | 5177 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5178 | { |
5179 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5180 | int idx; | |
5181 | flagword flags = asym_ptr->flags; | |
5182 | ||
5183 | /* When gas creates relocations against local labels, it creates its | |
5184 | own symbol for the section, but does put the symbol into the | |
5185 | symbol chain, so udata is 0. When the linker is generating | |
5186 | relocatable output, this section symbol may be for one of the | |
5187 | input sections rather than the output section. */ | |
5188 | if (asym_ptr->udata.i == 0 | |
5189 | && (flags & BSF_SECTION_SYM) | |
5190 | && asym_ptr->section) | |
5191 | { | |
5372391b | 5192 | asection *sec; |
252b5132 RH |
5193 | int indx; |
5194 | ||
5372391b AM |
5195 | sec = asym_ptr->section; |
5196 | if (sec->owner != abfd && sec->output_section != NULL) | |
5197 | sec = sec->output_section; | |
5198 | if (sec->owner == abfd | |
5199 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5200 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5201 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5202 | } | |
5203 | ||
5204 | idx = asym_ptr->udata.i; | |
5205 | ||
5206 | if (idx == 0) | |
5207 | { | |
5208 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 5209 | which is used in a relocation entry. */ |
252b5132 | 5210 | (*_bfd_error_handler) |
d003868e AM |
5211 | (_("%B: symbol `%s' required but not present"), |
5212 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5213 | bfd_set_error (bfd_error_no_symbols); |
5214 | return -1; | |
5215 | } | |
5216 | ||
5217 | #if DEBUG & 4 | |
5218 | { | |
5219 | fprintf (stderr, | |
661a3fd4 | 5220 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5221 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5222 | elf_symbol_flags (flags)); | |
5223 | fflush (stderr); | |
5224 | } | |
5225 | #endif | |
5226 | ||
5227 | return idx; | |
5228 | } | |
5229 | ||
84d1d650 | 5230 | /* Rewrite program header information. */ |
252b5132 | 5231 | |
b34976b6 | 5232 | static bfd_boolean |
84d1d650 | 5233 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5234 | { |
b34976b6 AM |
5235 | Elf_Internal_Ehdr *iehdr; |
5236 | struct elf_segment_map *map; | |
5237 | struct elf_segment_map *map_first; | |
5238 | struct elf_segment_map **pointer_to_map; | |
5239 | Elf_Internal_Phdr *segment; | |
5240 | asection *section; | |
5241 | unsigned int i; | |
5242 | unsigned int num_segments; | |
5243 | bfd_boolean phdr_included = FALSE; | |
5244 | bfd_vma maxpagesize; | |
5245 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5246 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5247 | const struct elf_backend_data *bed; |
bc67d8a6 | 5248 | |
caf47ea6 | 5249 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5250 | iehdr = elf_elfheader (ibfd); |
5251 | ||
bc67d8a6 | 5252 | map_first = NULL; |
c044fabd | 5253 | pointer_to_map = &map_first; |
252b5132 RH |
5254 | |
5255 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5256 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5257 | ||
5258 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5259 | #define SEGMENT_END(segment, start) \ |
5260 | (start + (segment->p_memsz > segment->p_filesz \ | |
5261 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5262 | |
eecdbe52 JJ |
5263 | #define SECTION_SIZE(section, segment) \ |
5264 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5265 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5266 | ? section->size : 0) |
eecdbe52 | 5267 | |
b34976b6 | 5268 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5269 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5270 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5271 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5272 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5273 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5274 | |
b34976b6 | 5275 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5276 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5277 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5278 | (section->lma >= base \ | |
eecdbe52 | 5279 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5280 | <= SEGMENT_END (segment, base))) |
252b5132 | 5281 | |
c044fabd | 5282 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5283 | #define IS_COREFILE_NOTE(p, s) \ |
5284 | (p->p_type == PT_NOTE \ | |
5285 | && bfd_get_format (ibfd) == bfd_core \ | |
5286 | && s->vma == 0 && s->lma == 0 \ | |
5287 | && (bfd_vma) s->filepos >= p->p_offset \ | |
cb3ff1e5 | 5288 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5289 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5290 | |
5291 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5292 | linker, which generates a PT_INTERP section with p_vaddr and | |
5293 | p_memsz set to 0. */ | |
aecc8f8a AM |
5294 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5295 | (p->p_vaddr == 0 \ | |
5296 | && p->p_paddr == 0 \ | |
5297 | && p->p_memsz == 0 \ | |
5298 | && p->p_filesz > 0 \ | |
5299 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5300 | && s->size > 0 \ |
aecc8f8a | 5301 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5302 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5303 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5304 | |
bc67d8a6 NC |
5305 | /* Decide if the given section should be included in the given segment. |
5306 | A section will be included if: | |
f5ffc919 | 5307 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5308 | if that is set for the segment and the VMA otherwise, |
bc67d8a6 NC |
5309 | 2. It is an allocated segment, |
5310 | 3. There is an output section associated with it, | |
eecdbe52 | 5311 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5312 | 5. PT_GNU_STACK segments do not include any sections. |
5313 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5314 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5315 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5316 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5317 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5318 | ((((segment->p_paddr \ |
5319 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5320 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5321 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5322 | || IS_COREFILE_NOTE (segment, section)) \ |
03394ac9 | 5323 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5324 | && (segment->p_type != PT_TLS \ |
5325 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5326 | && (segment->p_type == PT_LOAD \ | |
5327 | || segment->p_type == PT_TLS \ | |
5328 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5329 | && (segment->p_type != PT_DYNAMIC \ |
5330 | || SECTION_SIZE (section, segment) > 0 \ | |
5331 | || (segment->p_paddr \ | |
08a40648 AM |
5332 | ? segment->p_paddr != section->lma \ |
5333 | : segment->p_vaddr != section->vma) \ | |
6f79b219 | 5334 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ |
08a40648 | 5335 | == 0)) \ |
82e51918 | 5336 | && ! section->segment_mark) |
bc67d8a6 | 5337 | |
9f17e2a6 L |
5338 | /* If the output section of a section in the input segment is NULL, |
5339 | it is removed from the corresponding output segment. */ | |
5340 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5341 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5342 | && section->output_section != NULL) | |
5343 | ||
b34976b6 | 5344 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5345 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5346 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5347 | ||
5348 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5349 | their VMA address ranges and their LMA address ranges overlap. | |
5350 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5351 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5352 | to the same VMA range, but with the .data section mapped to a different | |
5353 | LMA. */ | |
aecc8f8a | 5354 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5355 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5356 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5357 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5358 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5359 | |
5360 | /* Initialise the segment mark field. */ | |
5361 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5362 | section->segment_mark = FALSE; |
bc67d8a6 | 5363 | |
252b5132 | 5364 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5365 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5366 | in the loadable segments. These can be created by weird |
aecc8f8a | 5367 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5368 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5369 | i < num_segments; | |
c044fabd | 5370 | i++, segment++) |
252b5132 | 5371 | { |
252b5132 | 5372 | unsigned int j; |
c044fabd | 5373 | Elf_Internal_Phdr *segment2; |
252b5132 | 5374 | |
aecc8f8a AM |
5375 | if (segment->p_type == PT_INTERP) |
5376 | for (section = ibfd->sections; section; section = section->next) | |
5377 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5378 | { | |
5379 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5380 | assignment code will work. */ |
aecc8f8a AM |
5381 | segment->p_vaddr = section->vma; |
5382 | break; | |
5383 | } | |
5384 | ||
bc67d8a6 NC |
5385 | if (segment->p_type != PT_LOAD) |
5386 | continue; | |
c044fabd | 5387 | |
bc67d8a6 | 5388 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5389 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5390 | { |
5391 | bfd_signed_vma extra_length; | |
c044fabd | 5392 | |
bc67d8a6 NC |
5393 | if (segment2->p_type != PT_LOAD |
5394 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5395 | continue; | |
c044fabd | 5396 | |
bc67d8a6 NC |
5397 | /* Merge the two segments together. */ |
5398 | if (segment2->p_vaddr < segment->p_vaddr) | |
5399 | { | |
c044fabd | 5400 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5401 | SEGMENT. */ |
bc67d8a6 NC |
5402 | extra_length = |
5403 | SEGMENT_END (segment, segment->p_vaddr) | |
5404 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5405 | |
bc67d8a6 NC |
5406 | if (extra_length > 0) |
5407 | { | |
5408 | segment2->p_memsz += extra_length; | |
5409 | segment2->p_filesz += extra_length; | |
5410 | } | |
c044fabd | 5411 | |
bc67d8a6 | 5412 | segment->p_type = PT_NULL; |
c044fabd | 5413 | |
bc67d8a6 NC |
5414 | /* Since we have deleted P we must restart the outer loop. */ |
5415 | i = 0; | |
5416 | segment = elf_tdata (ibfd)->phdr; | |
5417 | break; | |
5418 | } | |
5419 | else | |
5420 | { | |
c044fabd | 5421 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5422 | SEGMENT2. */ |
bc67d8a6 NC |
5423 | extra_length = |
5424 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5425 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5426 | |
bc67d8a6 NC |
5427 | if (extra_length > 0) |
5428 | { | |
5429 | segment->p_memsz += extra_length; | |
5430 | segment->p_filesz += extra_length; | |
5431 | } | |
c044fabd | 5432 | |
bc67d8a6 NC |
5433 | segment2->p_type = PT_NULL; |
5434 | } | |
5435 | } | |
5436 | } | |
c044fabd | 5437 | |
bc67d8a6 NC |
5438 | /* The second scan attempts to assign sections to segments. */ |
5439 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5440 | i < num_segments; | |
5441 | i ++, segment ++) | |
5442 | { | |
5443 | unsigned int section_count; | |
5444 | asection ** sections; | |
5445 | asection * output_section; | |
5446 | unsigned int isec; | |
5447 | bfd_vma matching_lma; | |
5448 | bfd_vma suggested_lma; | |
5449 | unsigned int j; | |
dc810e39 | 5450 | bfd_size_type amt; |
9f17e2a6 | 5451 | asection * first_section; |
bc67d8a6 NC |
5452 | |
5453 | if (segment->p_type == PT_NULL) | |
5454 | continue; | |
c044fabd | 5455 | |
9f17e2a6 | 5456 | first_section = NULL; |
bc67d8a6 | 5457 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5458 | for (section = ibfd->sections, section_count = 0; |
5459 | section != NULL; | |
5460 | section = section->next) | |
9f17e2a6 L |
5461 | { |
5462 | /* Find the first section in the input segment, which may be | |
5463 | removed from the corresponding output segment. */ | |
5464 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5465 | { | |
5466 | if (first_section == NULL) | |
5467 | first_section = section; | |
5468 | if (section->output_section != NULL) | |
5469 | ++section_count; | |
5470 | } | |
5471 | } | |
811072d8 | 5472 | |
b5f852ea NC |
5473 | /* Allocate a segment map big enough to contain |
5474 | all of the sections we have selected. */ | |
dc810e39 AM |
5475 | amt = sizeof (struct elf_segment_map); |
5476 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5477 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5478 | if (map == NULL) |
b34976b6 | 5479 | return FALSE; |
252b5132 RH |
5480 | |
5481 | /* Initialise the fields of the segment map. Default to | |
5482 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5483 | map->next = NULL; |
5484 | map->p_type = segment->p_type; | |
5485 | map->p_flags = segment->p_flags; | |
5486 | map->p_flags_valid = 1; | |
55d55ac7 | 5487 | |
9f17e2a6 L |
5488 | /* If the first section in the input segment is removed, there is |
5489 | no need to preserve segment physical address in the corresponding | |
5490 | output segment. */ | |
945c025a | 5491 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5492 | { |
5493 | map->p_paddr = segment->p_paddr; | |
5494 | map->p_paddr_valid = 1; | |
5495 | } | |
252b5132 RH |
5496 | |
5497 | /* Determine if this segment contains the ELF file header | |
5498 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5499 | map->includes_filehdr = (segment->p_offset == 0 |
5500 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5501 | |
bc67d8a6 | 5502 | map->includes_phdrs = 0; |
252b5132 | 5503 | |
bc67d8a6 | 5504 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5505 | { |
bc67d8a6 NC |
5506 | map->includes_phdrs = |
5507 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5508 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5509 | >= ((bfd_vma) iehdr->e_phoff |
5510 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5511 | |
bc67d8a6 | 5512 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5513 | phdr_included = TRUE; |
252b5132 RH |
5514 | } |
5515 | ||
bc67d8a6 | 5516 | if (section_count == 0) |
252b5132 RH |
5517 | { |
5518 | /* Special segments, such as the PT_PHDR segment, may contain | |
5519 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5520 | something. They are allowed by the ELF spec however, so only |
5521 | a warning is produced. */ | |
bc67d8a6 | 5522 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5523 | (*_bfd_error_handler) |
d003868e AM |
5524 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5525 | ibfd); | |
252b5132 | 5526 | |
bc67d8a6 | 5527 | map->count = 0; |
c044fabd KH |
5528 | *pointer_to_map = map; |
5529 | pointer_to_map = &map->next; | |
252b5132 RH |
5530 | |
5531 | continue; | |
5532 | } | |
5533 | ||
5534 | /* Now scan the sections in the input BFD again and attempt | |
5535 | to add their corresponding output sections to the segment map. | |
5536 | The problem here is how to handle an output section which has | |
5537 | been moved (ie had its LMA changed). There are four possibilities: | |
5538 | ||
5539 | 1. None of the sections have been moved. | |
5540 | In this case we can continue to use the segment LMA from the | |
5541 | input BFD. | |
5542 | ||
5543 | 2. All of the sections have been moved by the same amount. | |
5544 | In this case we can change the segment's LMA to match the LMA | |
5545 | of the first section. | |
5546 | ||
5547 | 3. Some of the sections have been moved, others have not. | |
5548 | In this case those sections which have not been moved can be | |
5549 | placed in the current segment which will have to have its size, | |
5550 | and possibly its LMA changed, and a new segment or segments will | |
5551 | have to be created to contain the other sections. | |
5552 | ||
b5f852ea | 5553 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5554 | In this case we can change the segment's LMA to match the LMA |
5555 | of the first section and we will have to create a new segment | |
5556 | or segments to contain the other sections. | |
5557 | ||
5558 | In order to save time, we allocate an array to hold the section | |
5559 | pointers that we are interested in. As these sections get assigned | |
5560 | to a segment, they are removed from this array. */ | |
5561 | ||
0b14c2aa L |
5562 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5563 | to work around this long long bug. */ | |
d0fb9a8d | 5564 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5565 | if (sections == NULL) |
b34976b6 | 5566 | return FALSE; |
252b5132 RH |
5567 | |
5568 | /* Step One: Scan for segment vs section LMA conflicts. | |
5569 | Also add the sections to the section array allocated above. | |
5570 | Also add the sections to the current segment. In the common | |
5571 | case, where the sections have not been moved, this means that | |
5572 | we have completely filled the segment, and there is nothing | |
5573 | more to do. */ | |
252b5132 | 5574 | isec = 0; |
72730e0c | 5575 | matching_lma = 0; |
252b5132 RH |
5576 | suggested_lma = 0; |
5577 | ||
bc67d8a6 NC |
5578 | for (j = 0, section = ibfd->sections; |
5579 | section != NULL; | |
5580 | section = section->next) | |
252b5132 | 5581 | { |
caf47ea6 | 5582 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5583 | { |
bc67d8a6 NC |
5584 | output_section = section->output_section; |
5585 | ||
5586 | sections[j ++] = section; | |
252b5132 RH |
5587 | |
5588 | /* The Solaris native linker always sets p_paddr to 0. | |
5589 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5590 | correct value. Note - some backends require that |
5591 | p_paddr be left as zero. */ | |
bc67d8a6 | 5592 | if (segment->p_paddr == 0 |
4455705d | 5593 | && segment->p_vaddr != 0 |
5e8d7549 | 5594 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5595 | && isec == 0 |
bc67d8a6 NC |
5596 | && output_section->lma != 0 |
5597 | && (output_section->vma == (segment->p_vaddr | |
5598 | + (map->includes_filehdr | |
5599 | ? iehdr->e_ehsize | |
5600 | : 0) | |
5601 | + (map->includes_phdrs | |
079e9a2f AM |
5602 | ? (iehdr->e_phnum |
5603 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5604 | : 0)))) |
5605 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5606 | |
5607 | /* Match up the physical address of the segment with the | |
5608 | LMA address of the output section. */ | |
bc67d8a6 | 5609 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5610 | || IS_COREFILE_NOTE (segment, section) |
5611 | || (bed->want_p_paddr_set_to_zero && | |
08a40648 | 5612 | IS_CONTAINED_BY_VMA (output_section, segment))) |
252b5132 RH |
5613 | { |
5614 | if (matching_lma == 0) | |
bc67d8a6 | 5615 | matching_lma = output_section->lma; |
252b5132 RH |
5616 | |
5617 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5618 | then it does not overlap any other section within that |
252b5132 | 5619 | segment. */ |
bc67d8a6 | 5620 | map->sections[isec ++] = output_section; |
252b5132 RH |
5621 | } |
5622 | else if (suggested_lma == 0) | |
bc67d8a6 | 5623 | suggested_lma = output_section->lma; |
252b5132 RH |
5624 | } |
5625 | } | |
5626 | ||
bc67d8a6 | 5627 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5628 | |
5629 | /* Step Two: Adjust the physical address of the current segment, | |
5630 | if necessary. */ | |
bc67d8a6 | 5631 | if (isec == section_count) |
252b5132 RH |
5632 | { |
5633 | /* All of the sections fitted within the segment as currently | |
5634 | specified. This is the default case. Add the segment to | |
5635 | the list of built segments and carry on to process the next | |
5636 | program header in the input BFD. */ | |
bc67d8a6 | 5637 | map->count = section_count; |
c044fabd KH |
5638 | *pointer_to_map = map; |
5639 | pointer_to_map = &map->next; | |
08a40648 | 5640 | |
3271a814 NS |
5641 | if (matching_lma != map->p_paddr |
5642 | && !map->includes_filehdr && !map->includes_phdrs) | |
5643 | /* There is some padding before the first section in the | |
5644 | segment. So, we must account for that in the output | |
5645 | segment's vma. */ | |
5646 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5647 | |
252b5132 RH |
5648 | free (sections); |
5649 | continue; | |
5650 | } | |
252b5132 RH |
5651 | else |
5652 | { | |
72730e0c AM |
5653 | if (matching_lma != 0) |
5654 | { | |
5655 | /* At least one section fits inside the current segment. | |
5656 | Keep it, but modify its physical address to match the | |
5657 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5658 | map->p_paddr = matching_lma; |
72730e0c AM |
5659 | } |
5660 | else | |
5661 | { | |
5662 | /* None of the sections fitted inside the current segment. | |
5663 | Change the current segment's physical address to match | |
5664 | the LMA of the first section. */ | |
bc67d8a6 | 5665 | map->p_paddr = suggested_lma; |
72730e0c AM |
5666 | } |
5667 | ||
bc67d8a6 NC |
5668 | /* Offset the segment physical address from the lma |
5669 | to allow for space taken up by elf headers. */ | |
5670 | if (map->includes_filehdr) | |
5671 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5672 | |
bc67d8a6 NC |
5673 | if (map->includes_phdrs) |
5674 | { | |
5675 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5676 | ||
5677 | /* iehdr->e_phnum is just an estimate of the number | |
5678 | of program headers that we will need. Make a note | |
5679 | here of the number we used and the segment we chose | |
5680 | to hold these headers, so that we can adjust the | |
5681 | offset when we know the correct value. */ | |
5682 | phdr_adjust_num = iehdr->e_phnum; | |
5683 | phdr_adjust_seg = map; | |
5684 | } | |
252b5132 RH |
5685 | } |
5686 | ||
5687 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5688 | those that fit to the current segment and removing them from the |
252b5132 RH |
5689 | sections array; but making sure not to leave large gaps. Once all |
5690 | possible sections have been assigned to the current segment it is | |
5691 | added to the list of built segments and if sections still remain | |
5692 | to be assigned, a new segment is constructed before repeating | |
5693 | the loop. */ | |
5694 | isec = 0; | |
5695 | do | |
5696 | { | |
bc67d8a6 | 5697 | map->count = 0; |
252b5132 RH |
5698 | suggested_lma = 0; |
5699 | ||
5700 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5701 | for (j = 0; j < section_count; j++) |
252b5132 | 5702 | { |
bc67d8a6 | 5703 | section = sections[j]; |
252b5132 | 5704 | |
bc67d8a6 | 5705 | if (section == NULL) |
252b5132 RH |
5706 | continue; |
5707 | ||
bc67d8a6 | 5708 | output_section = section->output_section; |
252b5132 | 5709 | |
bc67d8a6 | 5710 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5711 | |
bc67d8a6 NC |
5712 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5713 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5714 | { |
bc67d8a6 | 5715 | if (map->count == 0) |
252b5132 RH |
5716 | { |
5717 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5718 | the beginning of the segment, then something is |
5719 | wrong. */ | |
5720 | if (output_section->lma != | |
5721 | (map->p_paddr | |
5722 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5723 | + (map->includes_phdrs | |
5724 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5725 | : 0))) | |
252b5132 RH |
5726 | abort (); |
5727 | } | |
5728 | else | |
5729 | { | |
5730 | asection * prev_sec; | |
252b5132 | 5731 | |
bc67d8a6 | 5732 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5733 | |
5734 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5735 | and the start of this section is more than |
5736 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5737 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5738 | maxpagesize) |
caf47ea6 | 5739 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5740 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5741 | > output_section->lma)) |
252b5132 RH |
5742 | { |
5743 | if (suggested_lma == 0) | |
bc67d8a6 | 5744 | suggested_lma = output_section->lma; |
252b5132 RH |
5745 | |
5746 | continue; | |
5747 | } | |
5748 | } | |
5749 | ||
bc67d8a6 | 5750 | map->sections[map->count++] = output_section; |
252b5132 RH |
5751 | ++isec; |
5752 | sections[j] = NULL; | |
b34976b6 | 5753 | section->segment_mark = TRUE; |
252b5132 RH |
5754 | } |
5755 | else if (suggested_lma == 0) | |
bc67d8a6 | 5756 | suggested_lma = output_section->lma; |
252b5132 RH |
5757 | } |
5758 | ||
bc67d8a6 | 5759 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5760 | |
5761 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5762 | *pointer_to_map = map; |
5763 | pointer_to_map = &map->next; | |
252b5132 | 5764 | |
bc67d8a6 | 5765 | if (isec < section_count) |
252b5132 RH |
5766 | { |
5767 | /* We still have not allocated all of the sections to | |
5768 | segments. Create a new segment here, initialise it | |
5769 | and carry on looping. */ | |
dc810e39 AM |
5770 | amt = sizeof (struct elf_segment_map); |
5771 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5772 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5773 | if (map == NULL) |
5ed6aba4 NC |
5774 | { |
5775 | free (sections); | |
5776 | return FALSE; | |
5777 | } | |
252b5132 RH |
5778 | |
5779 | /* Initialise the fields of the segment map. Set the physical | |
5780 | physical address to the LMA of the first section that has | |
5781 | not yet been assigned. */ | |
bc67d8a6 NC |
5782 | map->next = NULL; |
5783 | map->p_type = segment->p_type; | |
5784 | map->p_flags = segment->p_flags; | |
5785 | map->p_flags_valid = 1; | |
5786 | map->p_paddr = suggested_lma; | |
5787 | map->p_paddr_valid = 1; | |
5788 | map->includes_filehdr = 0; | |
5789 | map->includes_phdrs = 0; | |
252b5132 RH |
5790 | } |
5791 | } | |
bc67d8a6 | 5792 | while (isec < section_count); |
252b5132 RH |
5793 | |
5794 | free (sections); | |
5795 | } | |
5796 | ||
5797 | /* The Solaris linker creates program headers in which all the | |
5798 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5799 | file, we get confused. Check for this case, and if we find it | |
5800 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5801 | for (map = map_first; map != NULL; map = map->next) |
5802 | if (map->p_paddr != 0) | |
252b5132 | 5803 | break; |
bc67d8a6 | 5804 | if (map == NULL) |
b5f852ea NC |
5805 | for (map = map_first; map != NULL; map = map->next) |
5806 | map->p_paddr_valid = 0; | |
252b5132 | 5807 | |
bc67d8a6 NC |
5808 | elf_tdata (obfd)->segment_map = map_first; |
5809 | ||
5810 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5811 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5812 | the offset if necessary. */ |
5813 | if (phdr_adjust_seg != NULL) | |
5814 | { | |
5815 | unsigned int count; | |
c044fabd | 5816 | |
bc67d8a6 | 5817 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5818 | count++; |
252b5132 | 5819 | |
bc67d8a6 NC |
5820 | if (count > phdr_adjust_num) |
5821 | phdr_adjust_seg->p_paddr | |
5822 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5823 | } | |
c044fabd | 5824 | |
bc67d8a6 | 5825 | #undef SEGMENT_END |
eecdbe52 | 5826 | #undef SECTION_SIZE |
bc67d8a6 NC |
5827 | #undef IS_CONTAINED_BY_VMA |
5828 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5829 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5830 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5831 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5832 | #undef INCLUDE_SECTION_IN_SEGMENT |
5833 | #undef SEGMENT_AFTER_SEGMENT | |
5834 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5835 | return TRUE; |
252b5132 RH |
5836 | } |
5837 | ||
84d1d650 L |
5838 | /* Copy ELF program header information. */ |
5839 | ||
5840 | static bfd_boolean | |
5841 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5842 | { | |
5843 | Elf_Internal_Ehdr *iehdr; | |
5844 | struct elf_segment_map *map; | |
5845 | struct elf_segment_map *map_first; | |
5846 | struct elf_segment_map **pointer_to_map; | |
5847 | Elf_Internal_Phdr *segment; | |
5848 | unsigned int i; | |
5849 | unsigned int num_segments; | |
5850 | bfd_boolean phdr_included = FALSE; | |
5851 | ||
5852 | iehdr = elf_elfheader (ibfd); | |
5853 | ||
5854 | map_first = NULL; | |
5855 | pointer_to_map = &map_first; | |
5856 | ||
5857 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5858 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5859 | i < num_segments; | |
5860 | i++, segment++) | |
5861 | { | |
5862 | asection *section; | |
5863 | unsigned int section_count; | |
5864 | bfd_size_type amt; | |
5865 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5866 | asection *first_section = NULL; |
84d1d650 L |
5867 | |
5868 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5869 | if (segment->p_type == PT_NULL) | |
5870 | continue; | |
5871 | ||
5872 | /* Compute how many sections are in this segment. */ | |
5873 | for (section = ibfd->sections, section_count = 0; | |
5874 | section != NULL; | |
5875 | section = section->next) | |
5876 | { | |
5877 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5878 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5879 | { |
53020534 L |
5880 | if (!first_section) |
5881 | first_section = section; | |
3271a814 NS |
5882 | section_count++; |
5883 | } | |
84d1d650 L |
5884 | } |
5885 | ||
5886 | /* Allocate a segment map big enough to contain | |
5887 | all of the sections we have selected. */ | |
5888 | amt = sizeof (struct elf_segment_map); | |
5889 | if (section_count != 0) | |
5890 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5891 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5892 | if (map == NULL) |
5893 | return FALSE; | |
5894 | ||
5895 | /* Initialize the fields of the output segment map with the | |
5896 | input segment. */ | |
5897 | map->next = NULL; | |
5898 | map->p_type = segment->p_type; | |
5899 | map->p_flags = segment->p_flags; | |
5900 | map->p_flags_valid = 1; | |
5901 | map->p_paddr = segment->p_paddr; | |
5902 | map->p_paddr_valid = 1; | |
3f570048 AM |
5903 | map->p_align = segment->p_align; |
5904 | map->p_align_valid = 1; | |
3271a814 | 5905 | map->p_vaddr_offset = 0; |
84d1d650 L |
5906 | |
5907 | /* Determine if this segment contains the ELF file header | |
5908 | and if it contains the program headers themselves. */ | |
5909 | map->includes_filehdr = (segment->p_offset == 0 | |
5910 | && segment->p_filesz >= iehdr->e_ehsize); | |
5911 | ||
5912 | map->includes_phdrs = 0; | |
5913 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5914 | { | |
5915 | map->includes_phdrs = | |
5916 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5917 | && (segment->p_offset + segment->p_filesz | |
5918 | >= ((bfd_vma) iehdr->e_phoff | |
5919 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5920 | ||
5921 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5922 | phdr_included = TRUE; | |
5923 | } | |
5924 | ||
3271a814 NS |
5925 | if (!map->includes_phdrs && !map->includes_filehdr) |
5926 | /* There is some other padding before the first section. */ | |
53020534 L |
5927 | map->p_vaddr_offset = ((first_section ? first_section->lma : 0) |
5928 | - segment->p_paddr); | |
08a40648 | 5929 | |
84d1d650 L |
5930 | if (section_count != 0) |
5931 | { | |
5932 | unsigned int isec = 0; | |
5933 | ||
53020534 | 5934 | for (section = first_section; |
84d1d650 L |
5935 | section != NULL; |
5936 | section = section->next) | |
5937 | { | |
5938 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5939 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5940 | { |
5941 | map->sections[isec++] = section->output_section; | |
5942 | if (isec == section_count) | |
5943 | break; | |
5944 | } | |
84d1d650 L |
5945 | } |
5946 | } | |
5947 | ||
5948 | map->count = section_count; | |
5949 | *pointer_to_map = map; | |
5950 | pointer_to_map = &map->next; | |
5951 | } | |
5952 | ||
5953 | elf_tdata (obfd)->segment_map = map_first; | |
5954 | return TRUE; | |
5955 | } | |
5956 | ||
5957 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5958 | information. */ | |
5959 | ||
5960 | static bfd_boolean | |
5961 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5962 | { | |
84d1d650 L |
5963 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5964 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5965 | return TRUE; | |
5966 | ||
5967 | if (elf_tdata (ibfd)->phdr == NULL) | |
5968 | return TRUE; | |
5969 | ||
5970 | if (ibfd->xvec == obfd->xvec) | |
5971 | { | |
cb3ff1e5 NC |
5972 | /* Check to see if any sections in the input BFD |
5973 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5974 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5975 | asection *section, *osec; |
5976 | unsigned int i, num_segments; | |
5977 | Elf_Internal_Shdr *this_hdr; | |
5978 | ||
5979 | /* Initialize the segment mark field. */ | |
5980 | for (section = obfd->sections; section != NULL; | |
5981 | section = section->next) | |
5982 | section->segment_mark = FALSE; | |
5983 | ||
5984 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5985 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5986 | i < num_segments; | |
5987 | i++, segment++) | |
5988 | { | |
5f6999aa NC |
5989 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5990 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5991 | which severly confuses things, so always regenerate the segment | |
5992 | map in this case. */ | |
5993 | if (segment->p_paddr == 0 | |
5994 | && segment->p_memsz == 0 | |
5995 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5996 | goto rewrite; |
5f6999aa | 5997 | |
84d1d650 L |
5998 | for (section = ibfd->sections; |
5999 | section != NULL; section = section->next) | |
6000 | { | |
6001 | /* We mark the output section so that we know it comes | |
6002 | from the input BFD. */ | |
6003 | osec = section->output_section; | |
6004 | if (osec) | |
6005 | osec->segment_mark = TRUE; | |
6006 | ||
6007 | /* Check if this section is covered by the segment. */ | |
6008 | this_hdr = &(elf_section_data(section)->this_hdr); | |
6009 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
6010 | { | |
6011 | /* FIXME: Check if its output section is changed or | |
6012 | removed. What else do we need to check? */ | |
6013 | if (osec == NULL | |
6014 | || section->flags != osec->flags | |
6015 | || section->lma != osec->lma | |
6016 | || section->vma != osec->vma | |
6017 | || section->size != osec->size | |
6018 | || section->rawsize != osec->rawsize | |
6019 | || section->alignment_power != osec->alignment_power) | |
6020 | goto rewrite; | |
6021 | } | |
6022 | } | |
6023 | } | |
6024 | ||
cb3ff1e5 | 6025 | /* Check to see if any output section do not come from the |
84d1d650 L |
6026 | input BFD. */ |
6027 | for (section = obfd->sections; section != NULL; | |
6028 | section = section->next) | |
6029 | { | |
6030 | if (section->segment_mark == FALSE) | |
6031 | goto rewrite; | |
6032 | else | |
6033 | section->segment_mark = FALSE; | |
6034 | } | |
6035 | ||
6036 | return copy_elf_program_header (ibfd, obfd); | |
6037 | } | |
6038 | ||
6039 | rewrite: | |
6040 | return rewrite_elf_program_header (ibfd, obfd); | |
6041 | } | |
6042 | ||
ccd2ec6a L |
6043 | /* Initialize private output section information from input section. */ |
6044 | ||
6045 | bfd_boolean | |
6046 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
6047 | asection *isec, | |
6048 | bfd *obfd, | |
6049 | asection *osec, | |
6050 | struct bfd_link_info *link_info) | |
6051 | ||
6052 | { | |
6053 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6054 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
6055 | ||
6056 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6057 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
6058 | return TRUE; | |
6059 | ||
e843e0f8 | 6060 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 6061 | output BFD section flags have been set to something different. |
e843e0f8 L |
6062 | elf_fake_sections will set ELF section type based on BFD |
6063 | section flags. */ | |
42bb2e33 AM |
6064 | if (elf_section_type (osec) == SHT_NULL |
6065 | && (osec->flags == isec->flags || !osec->flags)) | |
6066 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
6067 | |
6068 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
6069 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
6070 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
6071 | |
6072 | /* Set things up for objcopy and relocatable link. The output | |
6073 | SHT_GROUP section will have its elf_next_in_group pointing back | |
6074 | to the input group members. Ignore linker created group section. | |
6075 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
6076 | if (need_group) |
6077 | { | |
6078 | if (elf_sec_group (isec) == NULL | |
6079 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
6080 | { | |
6081 | if (elf_section_flags (isec) & SHF_GROUP) | |
6082 | elf_section_flags (osec) |= SHF_GROUP; | |
6083 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
6084 | elf_group_name (osec) = elf_group_name (isec); | |
6085 | } | |
6086 | } | |
6087 | ||
6088 | ihdr = &elf_section_data (isec)->this_hdr; | |
6089 | ||
6090 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
6091 | don't use the output section of the linked-to section since it | |
6092 | may be NULL at this point. */ | |
6093 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
6094 | { | |
6095 | ohdr = &elf_section_data (osec)->this_hdr; | |
6096 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
6097 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
6098 | } | |
6099 | ||
6100 | osec->use_rela_p = isec->use_rela_p; | |
6101 | ||
6102 | return TRUE; | |
6103 | } | |
6104 | ||
252b5132 RH |
6105 | /* Copy private section information. This copies over the entsize |
6106 | field, and sometimes the info field. */ | |
6107 | ||
b34976b6 | 6108 | bfd_boolean |
217aa764 AM |
6109 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6110 | asection *isec, | |
6111 | bfd *obfd, | |
6112 | asection *osec) | |
252b5132 RH |
6113 | { |
6114 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6115 | ||
6116 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6117 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6118 | return TRUE; |
252b5132 | 6119 | |
252b5132 RH |
6120 | ihdr = &elf_section_data (isec)->this_hdr; |
6121 | ohdr = &elf_section_data (osec)->this_hdr; | |
6122 | ||
6123 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6124 | ||
6125 | if (ihdr->sh_type == SHT_SYMTAB | |
6126 | || ihdr->sh_type == SHT_DYNSYM | |
6127 | || ihdr->sh_type == SHT_GNU_verneed | |
6128 | || ihdr->sh_type == SHT_GNU_verdef) | |
6129 | ohdr->sh_info = ihdr->sh_info; | |
6130 | ||
ccd2ec6a L |
6131 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6132 | NULL); | |
252b5132 RH |
6133 | } |
6134 | ||
80fccad2 BW |
6135 | /* Copy private header information. */ |
6136 | ||
6137 | bfd_boolean | |
6138 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6139 | { | |
30288845 AM |
6140 | asection *isec; |
6141 | ||
80fccad2 BW |
6142 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6143 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6144 | return TRUE; | |
6145 | ||
6146 | /* Copy over private BFD data if it has not already been copied. | |
6147 | This must be done here, rather than in the copy_private_bfd_data | |
6148 | entry point, because the latter is called after the section | |
6149 | contents have been set, which means that the program headers have | |
6150 | already been worked out. */ | |
6151 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6152 | { | |
6153 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6154 | return FALSE; | |
6155 | } | |
6156 | ||
30288845 AM |
6157 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
6158 | but this might be wrong if we deleted the group section. */ | |
6159 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
6160 | if (elf_section_type (isec) == SHT_GROUP | |
6161 | && isec->output_section == NULL) | |
6162 | { | |
6163 | asection *first = elf_next_in_group (isec); | |
6164 | asection *s = first; | |
6165 | while (s != NULL) | |
6166 | { | |
6167 | if (s->output_section != NULL) | |
6168 | { | |
6169 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6170 | elf_group_name (s->output_section) = NULL; | |
6171 | } | |
6172 | s = elf_next_in_group (s); | |
6173 | if (s == first) | |
6174 | break; | |
6175 | } | |
6176 | } | |
6177 | ||
80fccad2 BW |
6178 | return TRUE; |
6179 | } | |
6180 | ||
252b5132 RH |
6181 | /* Copy private symbol information. If this symbol is in a section |
6182 | which we did not map into a BFD section, try to map the section | |
6183 | index correctly. We use special macro definitions for the mapped | |
6184 | section indices; these definitions are interpreted by the | |
6185 | swap_out_syms function. */ | |
6186 | ||
9ad5cbcf AM |
6187 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6188 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6189 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6190 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6191 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6192 | |
b34976b6 | 6193 | bfd_boolean |
217aa764 AM |
6194 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6195 | asymbol *isymarg, | |
6196 | bfd *obfd, | |
6197 | asymbol *osymarg) | |
252b5132 RH |
6198 | { |
6199 | elf_symbol_type *isym, *osym; | |
6200 | ||
6201 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6202 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6203 | return TRUE; |
252b5132 RH |
6204 | |
6205 | isym = elf_symbol_from (ibfd, isymarg); | |
6206 | osym = elf_symbol_from (obfd, osymarg); | |
6207 | ||
6208 | if (isym != NULL | |
6209 | && osym != NULL | |
6210 | && bfd_is_abs_section (isym->symbol.section)) | |
6211 | { | |
6212 | unsigned int shndx; | |
6213 | ||
6214 | shndx = isym->internal_elf_sym.st_shndx; | |
6215 | if (shndx == elf_onesymtab (ibfd)) | |
6216 | shndx = MAP_ONESYMTAB; | |
6217 | else if (shndx == elf_dynsymtab (ibfd)) | |
6218 | shndx = MAP_DYNSYMTAB; | |
6219 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6220 | shndx = MAP_STRTAB; | |
6221 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6222 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6223 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6224 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6225 | osym->internal_elf_sym.st_shndx = shndx; |
6226 | } | |
6227 | ||
b34976b6 | 6228 | return TRUE; |
252b5132 RH |
6229 | } |
6230 | ||
6231 | /* Swap out the symbols. */ | |
6232 | ||
b34976b6 | 6233 | static bfd_boolean |
217aa764 AM |
6234 | swap_out_syms (bfd *abfd, |
6235 | struct bfd_strtab_hash **sttp, | |
6236 | int relocatable_p) | |
252b5132 | 6237 | { |
9c5bfbb7 | 6238 | const struct elf_backend_data *bed; |
079e9a2f AM |
6239 | int symcount; |
6240 | asymbol **syms; | |
6241 | struct bfd_strtab_hash *stt; | |
6242 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6243 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6244 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6245 | bfd_byte *outbound_syms; |
6246 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6247 | int idx; |
6248 | bfd_size_type amt; | |
174fd7f9 | 6249 | bfd_boolean name_local_sections; |
252b5132 RH |
6250 | |
6251 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6252 | return FALSE; |
252b5132 | 6253 | |
c044fabd | 6254 | /* Dump out the symtabs. */ |
079e9a2f AM |
6255 | stt = _bfd_elf_stringtab_init (); |
6256 | if (stt == NULL) | |
b34976b6 | 6257 | return FALSE; |
252b5132 | 6258 | |
079e9a2f AM |
6259 | bed = get_elf_backend_data (abfd); |
6260 | symcount = bfd_get_symcount (abfd); | |
6261 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6262 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6263 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6264 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6265 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6266 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6267 | |
6268 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6269 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6270 | ||
d0fb9a8d | 6271 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6272 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6273 | { |
6274 | _bfd_stringtab_free (stt); | |
6275 | return FALSE; | |
6276 | } | |
217aa764 | 6277 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6278 | |
9ad5cbcf AM |
6279 | outbound_shndx = NULL; |
6280 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6281 | if (symtab_shndx_hdr->sh_name != 0) | |
6282 | { | |
6283 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6284 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6285 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6286 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6287 | { |
6288 | _bfd_stringtab_free (stt); | |
6289 | return FALSE; | |
6290 | } | |
6291 | ||
9ad5cbcf AM |
6292 | symtab_shndx_hdr->contents = outbound_shndx; |
6293 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6294 | symtab_shndx_hdr->sh_size = amt; | |
6295 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6296 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6297 | } | |
6298 | ||
589e6347 | 6299 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6300 | { |
6301 | /* Fill in zeroth symbol and swap it out. */ | |
6302 | Elf_Internal_Sym sym; | |
6303 | sym.st_name = 0; | |
6304 | sym.st_value = 0; | |
6305 | sym.st_size = 0; | |
6306 | sym.st_info = 0; | |
6307 | sym.st_other = 0; | |
6308 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6309 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6310 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6311 | if (outbound_shndx != NULL) |
6312 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6313 | } |
252b5132 | 6314 | |
174fd7f9 RS |
6315 | name_local_sections |
6316 | = (bed->elf_backend_name_local_section_symbols | |
6317 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6318 | ||
079e9a2f AM |
6319 | syms = bfd_get_outsymbols (abfd); |
6320 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6321 | { |
252b5132 | 6322 | Elf_Internal_Sym sym; |
079e9a2f AM |
6323 | bfd_vma value = syms[idx]->value; |
6324 | elf_symbol_type *type_ptr; | |
6325 | flagword flags = syms[idx]->flags; | |
6326 | int type; | |
252b5132 | 6327 | |
174fd7f9 RS |
6328 | if (!name_local_sections |
6329 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6330 | { |
6331 | /* Local section symbols have no name. */ | |
6332 | sym.st_name = 0; | |
6333 | } | |
6334 | else | |
6335 | { | |
6336 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6337 | syms[idx]->name, | |
b34976b6 | 6338 | TRUE, FALSE); |
079e9a2f | 6339 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6340 | { |
6341 | _bfd_stringtab_free (stt); | |
6342 | return FALSE; | |
6343 | } | |
079e9a2f | 6344 | } |
252b5132 | 6345 | |
079e9a2f | 6346 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6347 | |
079e9a2f AM |
6348 | if ((flags & BSF_SECTION_SYM) == 0 |
6349 | && bfd_is_com_section (syms[idx]->section)) | |
6350 | { | |
6351 | /* ELF common symbols put the alignment into the `value' field, | |
6352 | and the size into the `size' field. This is backwards from | |
6353 | how BFD handles it, so reverse it here. */ | |
6354 | sym.st_size = value; | |
6355 | if (type_ptr == NULL | |
6356 | || type_ptr->internal_elf_sym.st_value == 0) | |
6357 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6358 | else | |
6359 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6360 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6361 | (abfd, syms[idx]->section); | |
6362 | } | |
6363 | else | |
6364 | { | |
6365 | asection *sec = syms[idx]->section; | |
6366 | int shndx; | |
252b5132 | 6367 | |
079e9a2f AM |
6368 | if (sec->output_section) |
6369 | { | |
6370 | value += sec->output_offset; | |
6371 | sec = sec->output_section; | |
6372 | } | |
589e6347 | 6373 | |
079e9a2f AM |
6374 | /* Don't add in the section vma for relocatable output. */ |
6375 | if (! relocatable_p) | |
6376 | value += sec->vma; | |
6377 | sym.st_value = value; | |
6378 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6379 | ||
6380 | if (bfd_is_abs_section (sec) | |
6381 | && type_ptr != NULL | |
6382 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6383 | { | |
6384 | /* This symbol is in a real ELF section which we did | |
6385 | not create as a BFD section. Undo the mapping done | |
6386 | by copy_private_symbol_data. */ | |
6387 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6388 | switch (shndx) | |
6389 | { | |
6390 | case MAP_ONESYMTAB: | |
6391 | shndx = elf_onesymtab (abfd); | |
6392 | break; | |
6393 | case MAP_DYNSYMTAB: | |
6394 | shndx = elf_dynsymtab (abfd); | |
6395 | break; | |
6396 | case MAP_STRTAB: | |
6397 | shndx = elf_tdata (abfd)->strtab_section; | |
6398 | break; | |
6399 | case MAP_SHSTRTAB: | |
6400 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6401 | break; | |
9ad5cbcf AM |
6402 | case MAP_SYM_SHNDX: |
6403 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6404 | break; | |
079e9a2f AM |
6405 | default: |
6406 | break; | |
6407 | } | |
6408 | } | |
6409 | else | |
6410 | { | |
6411 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6412 | |
079e9a2f AM |
6413 | if (shndx == -1) |
6414 | { | |
6415 | asection *sec2; | |
6416 | ||
6417 | /* Writing this would be a hell of a lot easier if | |
6418 | we had some decent documentation on bfd, and | |
6419 | knew what to expect of the library, and what to | |
6420 | demand of applications. For example, it | |
6421 | appears that `objcopy' might not set the | |
6422 | section of a symbol to be a section that is | |
6423 | actually in the output file. */ | |
6424 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6425 | if (sec2 == NULL) |
6426 | { | |
6427 | _bfd_error_handler (_("\ | |
6428 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6429 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6430 | sec->name); | |
811072d8 | 6431 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6432 | _bfd_stringtab_free (stt); |
589e6347 NC |
6433 | return FALSE; |
6434 | } | |
811072d8 | 6435 | |
079e9a2f AM |
6436 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6437 | BFD_ASSERT (shndx != -1); | |
6438 | } | |
6439 | } | |
252b5132 | 6440 | |
079e9a2f AM |
6441 | sym.st_shndx = shndx; |
6442 | } | |
252b5132 | 6443 | |
13ae64f3 JJ |
6444 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6445 | type = STT_TLS; | |
6446 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6447 | type = STT_FUNC; |
6448 | else if ((flags & BSF_OBJECT) != 0) | |
6449 | type = STT_OBJECT; | |
d9352518 DB |
6450 | else if ((flags & BSF_RELC) != 0) |
6451 | type = STT_RELC; | |
6452 | else if ((flags & BSF_SRELC) != 0) | |
6453 | type = STT_SRELC; | |
079e9a2f AM |
6454 | else |
6455 | type = STT_NOTYPE; | |
252b5132 | 6456 | |
13ae64f3 JJ |
6457 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6458 | type = STT_TLS; | |
6459 | ||
589e6347 | 6460 | /* Processor-specific types. */ |
079e9a2f AM |
6461 | if (type_ptr != NULL |
6462 | && bed->elf_backend_get_symbol_type) | |
6463 | type = ((*bed->elf_backend_get_symbol_type) | |
6464 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6465 | |
079e9a2f AM |
6466 | if (flags & BSF_SECTION_SYM) |
6467 | { | |
6468 | if (flags & BSF_GLOBAL) | |
6469 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6470 | else | |
6471 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6472 | } | |
6473 | else if (bfd_is_com_section (syms[idx]->section)) | |
6474 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6475 | else if (bfd_is_und_section (syms[idx]->section)) | |
6476 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6477 | ? STB_WEAK | |
6478 | : STB_GLOBAL), | |
6479 | type); | |
6480 | else if (flags & BSF_FILE) | |
6481 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6482 | else | |
6483 | { | |
6484 | int bind = STB_LOCAL; | |
252b5132 | 6485 | |
079e9a2f AM |
6486 | if (flags & BSF_LOCAL) |
6487 | bind = STB_LOCAL; | |
6488 | else if (flags & BSF_WEAK) | |
6489 | bind = STB_WEAK; | |
6490 | else if (flags & BSF_GLOBAL) | |
6491 | bind = STB_GLOBAL; | |
252b5132 | 6492 | |
079e9a2f AM |
6493 | sym.st_info = ELF_ST_INFO (bind, type); |
6494 | } | |
252b5132 | 6495 | |
079e9a2f AM |
6496 | if (type_ptr != NULL) |
6497 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6498 | else | |
6499 | sym.st_other = 0; | |
252b5132 | 6500 | |
9ad5cbcf | 6501 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6502 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6503 | if (outbound_shndx != NULL) |
6504 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6505 | } |
252b5132 | 6506 | |
079e9a2f AM |
6507 | *sttp = stt; |
6508 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6509 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6510 | |
079e9a2f AM |
6511 | symstrtab_hdr->sh_flags = 0; |
6512 | symstrtab_hdr->sh_addr = 0; | |
6513 | symstrtab_hdr->sh_entsize = 0; | |
6514 | symstrtab_hdr->sh_link = 0; | |
6515 | symstrtab_hdr->sh_info = 0; | |
6516 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6517 | |
b34976b6 | 6518 | return TRUE; |
252b5132 RH |
6519 | } |
6520 | ||
6521 | /* Return the number of bytes required to hold the symtab vector. | |
6522 | ||
6523 | Note that we base it on the count plus 1, since we will null terminate | |
6524 | the vector allocated based on this size. However, the ELF symbol table | |
6525 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6526 | ||
6527 | long | |
217aa764 | 6528 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6529 | { |
6530 | long symcount; | |
6531 | long symtab_size; | |
6532 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6533 | ||
6534 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6535 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6536 | if (symcount > 0) | |
6537 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6538 | |
6539 | return symtab_size; | |
6540 | } | |
6541 | ||
6542 | long | |
217aa764 | 6543 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6544 | { |
6545 | long symcount; | |
6546 | long symtab_size; | |
6547 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6548 | ||
6549 | if (elf_dynsymtab (abfd) == 0) | |
6550 | { | |
6551 | bfd_set_error (bfd_error_invalid_operation); | |
6552 | return -1; | |
6553 | } | |
6554 | ||
6555 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6556 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6557 | if (symcount > 0) | |
6558 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6559 | |
6560 | return symtab_size; | |
6561 | } | |
6562 | ||
6563 | long | |
217aa764 AM |
6564 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6565 | sec_ptr asect) | |
252b5132 RH |
6566 | { |
6567 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6568 | } | |
6569 | ||
6570 | /* Canonicalize the relocs. */ | |
6571 | ||
6572 | long | |
217aa764 AM |
6573 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6574 | sec_ptr section, | |
6575 | arelent **relptr, | |
6576 | asymbol **symbols) | |
252b5132 RH |
6577 | { |
6578 | arelent *tblptr; | |
6579 | unsigned int i; | |
9c5bfbb7 | 6580 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6581 | |
b34976b6 | 6582 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6583 | return -1; |
6584 | ||
6585 | tblptr = section->relocation; | |
6586 | for (i = 0; i < section->reloc_count; i++) | |
6587 | *relptr++ = tblptr++; | |
6588 | ||
6589 | *relptr = NULL; | |
6590 | ||
6591 | return section->reloc_count; | |
6592 | } | |
6593 | ||
6594 | long | |
6cee3f79 | 6595 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6596 | { |
9c5bfbb7 | 6597 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6598 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6599 | |
6600 | if (symcount >= 0) | |
6601 | bfd_get_symcount (abfd) = symcount; | |
6602 | return symcount; | |
6603 | } | |
6604 | ||
6605 | long | |
217aa764 AM |
6606 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6607 | asymbol **allocation) | |
252b5132 | 6608 | { |
9c5bfbb7 | 6609 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6610 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6611 | |
6612 | if (symcount >= 0) | |
6613 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6614 | return symcount; | |
252b5132 RH |
6615 | } |
6616 | ||
8615f3f2 AM |
6617 | /* Return the size required for the dynamic reloc entries. Any loadable |
6618 | section that was actually installed in the BFD, and has type SHT_REL | |
6619 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6620 | dynamic reloc section. */ | |
252b5132 RH |
6621 | |
6622 | long | |
217aa764 | 6623 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6624 | { |
6625 | long ret; | |
6626 | asection *s; | |
6627 | ||
6628 | if (elf_dynsymtab (abfd) == 0) | |
6629 | { | |
6630 | bfd_set_error (bfd_error_invalid_operation); | |
6631 | return -1; | |
6632 | } | |
6633 | ||
6634 | ret = sizeof (arelent *); | |
6635 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6636 | if ((s->flags & SEC_LOAD) != 0 |
6637 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6638 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6639 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6640 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6641 | * sizeof (arelent *)); |
6642 | ||
6643 | return ret; | |
6644 | } | |
6645 | ||
8615f3f2 AM |
6646 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6647 | dynamic relocations as a single block, although they are actually | |
6648 | associated with particular sections; the interface, which was | |
6649 | designed for SunOS style shared libraries, expects that there is only | |
6650 | one set of dynamic relocs. Any loadable section that was actually | |
6651 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6652 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6653 | |
6654 | long | |
217aa764 AM |
6655 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6656 | arelent **storage, | |
6657 | asymbol **syms) | |
252b5132 | 6658 | { |
217aa764 | 6659 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6660 | asection *s; |
6661 | long ret; | |
6662 | ||
6663 | if (elf_dynsymtab (abfd) == 0) | |
6664 | { | |
6665 | bfd_set_error (bfd_error_invalid_operation); | |
6666 | return -1; | |
6667 | } | |
6668 | ||
6669 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6670 | ret = 0; | |
6671 | for (s = abfd->sections; s != NULL; s = s->next) | |
6672 | { | |
8615f3f2 AM |
6673 | if ((s->flags & SEC_LOAD) != 0 |
6674 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6675 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6676 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6677 | { | |
6678 | arelent *p; | |
6679 | long count, i; | |
6680 | ||
b34976b6 | 6681 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6682 | return -1; |
eea6121a | 6683 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6684 | p = s->relocation; |
6685 | for (i = 0; i < count; i++) | |
6686 | *storage++ = p++; | |
6687 | ret += count; | |
6688 | } | |
6689 | } | |
6690 | ||
6691 | *storage = NULL; | |
6692 | ||
6693 | return ret; | |
6694 | } | |
6695 | \f | |
6696 | /* Read in the version information. */ | |
6697 | ||
b34976b6 | 6698 | bfd_boolean |
fc0e6df6 | 6699 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6700 | { |
6701 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6702 | unsigned int freeidx = 0; |
6703 | ||
6704 | if (elf_dynverref (abfd) != 0) | |
6705 | { | |
6706 | Elf_Internal_Shdr *hdr; | |
6707 | Elf_External_Verneed *everneed; | |
6708 | Elf_Internal_Verneed *iverneed; | |
6709 | unsigned int i; | |
d0fb9a8d | 6710 | bfd_byte *contents_end; |
fc0e6df6 PB |
6711 | |
6712 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6713 | ||
d0fb9a8d JJ |
6714 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6715 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6716 | if (elf_tdata (abfd)->verref == NULL) |
6717 | goto error_return; | |
6718 | ||
6719 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6720 | ||
6721 | contents = bfd_malloc (hdr->sh_size); | |
6722 | if (contents == NULL) | |
d0fb9a8d JJ |
6723 | { |
6724 | error_return_verref: | |
6725 | elf_tdata (abfd)->verref = NULL; | |
6726 | elf_tdata (abfd)->cverrefs = 0; | |
6727 | goto error_return; | |
6728 | } | |
fc0e6df6 PB |
6729 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6730 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6731 | goto error_return_verref; |
fc0e6df6 | 6732 | |
d0fb9a8d JJ |
6733 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6734 | goto error_return_verref; | |
6735 | ||
6736 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6737 | == sizeof (Elf_External_Vernaux)); | |
6738 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6739 | everneed = (Elf_External_Verneed *) contents; |
6740 | iverneed = elf_tdata (abfd)->verref; | |
6741 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6742 | { | |
6743 | Elf_External_Vernaux *evernaux; | |
6744 | Elf_Internal_Vernaux *ivernaux; | |
6745 | unsigned int j; | |
6746 | ||
6747 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6748 | ||
6749 | iverneed->vn_bfd = abfd; | |
6750 | ||
6751 | iverneed->vn_filename = | |
6752 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6753 | iverneed->vn_file); | |
6754 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6755 | goto error_return_verref; |
fc0e6df6 | 6756 | |
d0fb9a8d JJ |
6757 | if (iverneed->vn_cnt == 0) |
6758 | iverneed->vn_auxptr = NULL; | |
6759 | else | |
6760 | { | |
6761 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6762 | sizeof (Elf_Internal_Vernaux)); | |
6763 | if (iverneed->vn_auxptr == NULL) | |
6764 | goto error_return_verref; | |
6765 | } | |
6766 | ||
6767 | if (iverneed->vn_aux | |
6768 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6769 | goto error_return_verref; | |
fc0e6df6 PB |
6770 | |
6771 | evernaux = ((Elf_External_Vernaux *) | |
6772 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6773 | ivernaux = iverneed->vn_auxptr; | |
6774 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6775 | { | |
6776 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6777 | ||
6778 | ivernaux->vna_nodename = | |
6779 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6780 | ivernaux->vna_name); | |
6781 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6782 | goto error_return_verref; |
fc0e6df6 PB |
6783 | |
6784 | if (j + 1 < iverneed->vn_cnt) | |
6785 | ivernaux->vna_nextptr = ivernaux + 1; | |
6786 | else | |
6787 | ivernaux->vna_nextptr = NULL; | |
6788 | ||
d0fb9a8d JJ |
6789 | if (ivernaux->vna_next |
6790 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6791 | goto error_return_verref; | |
6792 | ||
fc0e6df6 PB |
6793 | evernaux = ((Elf_External_Vernaux *) |
6794 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6795 | ||
6796 | if (ivernaux->vna_other > freeidx) | |
6797 | freeidx = ivernaux->vna_other; | |
6798 | } | |
6799 | ||
6800 | if (i + 1 < hdr->sh_info) | |
6801 | iverneed->vn_nextref = iverneed + 1; | |
6802 | else | |
6803 | iverneed->vn_nextref = NULL; | |
6804 | ||
d0fb9a8d JJ |
6805 | if (iverneed->vn_next |
6806 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6807 | goto error_return_verref; | |
6808 | ||
fc0e6df6 PB |
6809 | everneed = ((Elf_External_Verneed *) |
6810 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6811 | } | |
6812 | ||
6813 | free (contents); | |
6814 | contents = NULL; | |
6815 | } | |
252b5132 RH |
6816 | |
6817 | if (elf_dynverdef (abfd) != 0) | |
6818 | { | |
6819 | Elf_Internal_Shdr *hdr; | |
6820 | Elf_External_Verdef *everdef; | |
6821 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6822 | Elf_Internal_Verdef *iverdefarr; |
6823 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6824 | unsigned int i; |
062e2358 | 6825 | unsigned int maxidx; |
d0fb9a8d | 6826 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6827 | |
6828 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6829 | ||
217aa764 | 6830 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6831 | if (contents == NULL) |
6832 | goto error_return; | |
6833 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6834 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6835 | goto error_return; |
6836 | ||
d0fb9a8d JJ |
6837 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6838 | goto error_return; | |
6839 | ||
6840 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6841 | >= sizeof (Elf_External_Verdaux)); | |
6842 | contents_end_def = contents + hdr->sh_size | |
6843 | - sizeof (Elf_External_Verdef); | |
6844 | contents_end_aux = contents + hdr->sh_size | |
6845 | - sizeof (Elf_External_Verdaux); | |
6846 | ||
f631889e UD |
6847 | /* We know the number of entries in the section but not the maximum |
6848 | index. Therefore we have to run through all entries and find | |
6849 | the maximum. */ | |
252b5132 | 6850 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6851 | maxidx = 0; |
6852 | for (i = 0; i < hdr->sh_info; ++i) | |
6853 | { | |
6854 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6855 | ||
062e2358 AM |
6856 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6857 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6858 | |
d0fb9a8d JJ |
6859 | if (iverdefmem.vd_next |
6860 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6861 | goto error_return; | |
6862 | ||
f631889e UD |
6863 | everdef = ((Elf_External_Verdef *) |
6864 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6865 | } | |
6866 | ||
fc0e6df6 PB |
6867 | if (default_imported_symver) |
6868 | { | |
6869 | if (freeidx > maxidx) | |
6870 | maxidx = ++freeidx; | |
6871 | else | |
6872 | freeidx = ++maxidx; | |
6873 | } | |
d0fb9a8d JJ |
6874 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6875 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6876 | if (elf_tdata (abfd)->verdef == NULL) |
6877 | goto error_return; | |
6878 | ||
6879 | elf_tdata (abfd)->cverdefs = maxidx; | |
6880 | ||
6881 | everdef = (Elf_External_Verdef *) contents; | |
6882 | iverdefarr = elf_tdata (abfd)->verdef; | |
6883 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6884 | { |
6885 | Elf_External_Verdaux *everdaux; | |
6886 | Elf_Internal_Verdaux *iverdaux; | |
6887 | unsigned int j; | |
6888 | ||
f631889e UD |
6889 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6890 | ||
d0fb9a8d JJ |
6891 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6892 | { | |
6893 | error_return_verdef: | |
6894 | elf_tdata (abfd)->verdef = NULL; | |
6895 | elf_tdata (abfd)->cverdefs = 0; | |
6896 | goto error_return; | |
6897 | } | |
6898 | ||
f631889e UD |
6899 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6900 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6901 | |
6902 | iverdef->vd_bfd = abfd; | |
6903 | ||
d0fb9a8d JJ |
6904 | if (iverdef->vd_cnt == 0) |
6905 | iverdef->vd_auxptr = NULL; | |
6906 | else | |
6907 | { | |
6908 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6909 | sizeof (Elf_Internal_Verdaux)); | |
6910 | if (iverdef->vd_auxptr == NULL) | |
6911 | goto error_return_verdef; | |
6912 | } | |
6913 | ||
6914 | if (iverdef->vd_aux | |
6915 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6916 | goto error_return_verdef; | |
252b5132 RH |
6917 | |
6918 | everdaux = ((Elf_External_Verdaux *) | |
6919 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6920 | iverdaux = iverdef->vd_auxptr; | |
6921 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6922 | { | |
6923 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6924 | ||
6925 | iverdaux->vda_nodename = | |
6926 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6927 | iverdaux->vda_name); | |
6928 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6929 | goto error_return_verdef; |
252b5132 RH |
6930 | |
6931 | if (j + 1 < iverdef->vd_cnt) | |
6932 | iverdaux->vda_nextptr = iverdaux + 1; | |
6933 | else | |
6934 | iverdaux->vda_nextptr = NULL; | |
6935 | ||
d0fb9a8d JJ |
6936 | if (iverdaux->vda_next |
6937 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6938 | goto error_return_verdef; | |
6939 | ||
252b5132 RH |
6940 | everdaux = ((Elf_External_Verdaux *) |
6941 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6942 | } | |
6943 | ||
d0fb9a8d JJ |
6944 | if (iverdef->vd_cnt) |
6945 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6946 | |
d0fb9a8d | 6947 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6948 | iverdef->vd_nextdef = iverdef + 1; |
6949 | else | |
6950 | iverdef->vd_nextdef = NULL; | |
6951 | ||
6952 | everdef = ((Elf_External_Verdef *) | |
6953 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6954 | } | |
6955 | ||
6956 | free (contents); | |
6957 | contents = NULL; | |
6958 | } | |
fc0e6df6 | 6959 | else if (default_imported_symver) |
252b5132 | 6960 | { |
fc0e6df6 PB |
6961 | if (freeidx < 3) |
6962 | freeidx = 3; | |
6963 | else | |
6964 | freeidx++; | |
252b5132 | 6965 | |
d0fb9a8d JJ |
6966 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6967 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6968 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6969 | goto error_return; |
6970 | ||
fc0e6df6 PB |
6971 | elf_tdata (abfd)->cverdefs = freeidx; |
6972 | } | |
252b5132 | 6973 | |
fc0e6df6 PB |
6974 | /* Create a default version based on the soname. */ |
6975 | if (default_imported_symver) | |
6976 | { | |
6977 | Elf_Internal_Verdef *iverdef; | |
6978 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6979 | |
fc0e6df6 | 6980 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6981 | |
fc0e6df6 PB |
6982 | iverdef->vd_version = VER_DEF_CURRENT; |
6983 | iverdef->vd_flags = 0; | |
6984 | iverdef->vd_ndx = freeidx; | |
6985 | iverdef->vd_cnt = 1; | |
252b5132 | 6986 | |
fc0e6df6 | 6987 | iverdef->vd_bfd = abfd; |
252b5132 | 6988 | |
fc0e6df6 PB |
6989 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6990 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6991 | goto error_return_verdef; |
fc0e6df6 | 6992 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6993 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6994 | if (iverdef->vd_auxptr == NULL) | |
6995 | goto error_return_verdef; | |
252b5132 | 6996 | |
fc0e6df6 PB |
6997 | iverdaux = iverdef->vd_auxptr; |
6998 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6999 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
7000 | } |
7001 | ||
b34976b6 | 7002 | return TRUE; |
252b5132 RH |
7003 | |
7004 | error_return: | |
5ed6aba4 | 7005 | if (contents != NULL) |
252b5132 | 7006 | free (contents); |
b34976b6 | 7007 | return FALSE; |
252b5132 RH |
7008 | } |
7009 | \f | |
7010 | asymbol * | |
217aa764 | 7011 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
7012 | { |
7013 | elf_symbol_type *newsym; | |
dc810e39 | 7014 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 7015 | |
217aa764 | 7016 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
7017 | if (!newsym) |
7018 | return NULL; | |
7019 | else | |
7020 | { | |
7021 | newsym->symbol.the_bfd = abfd; | |
7022 | return &newsym->symbol; | |
7023 | } | |
7024 | } | |
7025 | ||
7026 | void | |
217aa764 AM |
7027 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
7028 | asymbol *symbol, | |
7029 | symbol_info *ret) | |
252b5132 RH |
7030 | { |
7031 | bfd_symbol_info (symbol, ret); | |
7032 | } | |
7033 | ||
7034 | /* Return whether a symbol name implies a local symbol. Most targets | |
7035 | use this function for the is_local_label_name entry point, but some | |
7036 | override it. */ | |
7037 | ||
b34976b6 | 7038 | bfd_boolean |
217aa764 AM |
7039 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
7040 | const char *name) | |
252b5132 RH |
7041 | { |
7042 | /* Normal local symbols start with ``.L''. */ | |
7043 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 7044 | return TRUE; |
252b5132 RH |
7045 | |
7046 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
7047 | DWARF debugging symbols starting with ``..''. */ | |
7048 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 7049 | return TRUE; |
252b5132 RH |
7050 | |
7051 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
7052 | emitting DWARF debugging output. I suspect this is actually a | |
7053 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
7054 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
7055 | underscore to be emitted on some ELF targets). For ease of use, | |
7056 | we treat such symbols as local. */ | |
7057 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 7058 | return TRUE; |
252b5132 | 7059 | |
b34976b6 | 7060 | return FALSE; |
252b5132 RH |
7061 | } |
7062 | ||
7063 | alent * | |
217aa764 AM |
7064 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
7065 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
7066 | { |
7067 | abort (); | |
7068 | return NULL; | |
7069 | } | |
7070 | ||
b34976b6 | 7071 | bfd_boolean |
217aa764 AM |
7072 | _bfd_elf_set_arch_mach (bfd *abfd, |
7073 | enum bfd_architecture arch, | |
7074 | unsigned long machine) | |
252b5132 RH |
7075 | { |
7076 | /* If this isn't the right architecture for this backend, and this | |
7077 | isn't the generic backend, fail. */ | |
7078 | if (arch != get_elf_backend_data (abfd)->arch | |
7079 | && arch != bfd_arch_unknown | |
7080 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 7081 | return FALSE; |
252b5132 RH |
7082 | |
7083 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
7084 | } | |
7085 | ||
d1fad7c6 NC |
7086 | /* Find the function to a particular section and offset, |
7087 | for error reporting. */ | |
252b5132 | 7088 | |
b34976b6 | 7089 | static bfd_boolean |
217aa764 AM |
7090 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
7091 | asection *section, | |
7092 | asymbol **symbols, | |
7093 | bfd_vma offset, | |
7094 | const char **filename_ptr, | |
7095 | const char **functionname_ptr) | |
252b5132 | 7096 | { |
252b5132 | 7097 | const char *filename; |
57426232 | 7098 | asymbol *func, *file; |
252b5132 RH |
7099 | bfd_vma low_func; |
7100 | asymbol **p; | |
57426232 JB |
7101 | /* ??? Given multiple file symbols, it is impossible to reliably |
7102 | choose the right file name for global symbols. File symbols are | |
7103 | local symbols, and thus all file symbols must sort before any | |
7104 | global symbols. The ELF spec may be interpreted to say that a | |
7105 | file symbol must sort before other local symbols, but currently | |
7106 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
7107 | make a better choice of file name for local symbols by ignoring | |
7108 | file symbols appearing after a given local symbol. */ | |
7109 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 7110 | |
252b5132 RH |
7111 | filename = NULL; |
7112 | func = NULL; | |
57426232 | 7113 | file = NULL; |
252b5132 | 7114 | low_func = 0; |
57426232 | 7115 | state = nothing_seen; |
252b5132 RH |
7116 | |
7117 | for (p = symbols; *p != NULL; p++) | |
7118 | { | |
7119 | elf_symbol_type *q; | |
7120 | ||
7121 | q = (elf_symbol_type *) *p; | |
7122 | ||
252b5132 RH |
7123 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
7124 | { | |
7125 | default: | |
7126 | break; | |
7127 | case STT_FILE: | |
57426232 JB |
7128 | file = &q->symbol; |
7129 | if (state == symbol_seen) | |
7130 | state = file_after_symbol_seen; | |
7131 | continue; | |
252b5132 RH |
7132 | case STT_NOTYPE: |
7133 | case STT_FUNC: | |
6b40fcba | 7134 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7135 | && q->symbol.value >= low_func |
7136 | && q->symbol.value <= offset) | |
7137 | { | |
7138 | func = (asymbol *) q; | |
7139 | low_func = q->symbol.value; | |
a1923858 AM |
7140 | filename = NULL; |
7141 | if (file != NULL | |
7142 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7143 | || state != file_after_symbol_seen)) | |
57426232 | 7144 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7145 | } |
7146 | break; | |
7147 | } | |
57426232 JB |
7148 | if (state == nothing_seen) |
7149 | state = symbol_seen; | |
252b5132 RH |
7150 | } |
7151 | ||
7152 | if (func == NULL) | |
b34976b6 | 7153 | return FALSE; |
252b5132 | 7154 | |
d1fad7c6 NC |
7155 | if (filename_ptr) |
7156 | *filename_ptr = filename; | |
7157 | if (functionname_ptr) | |
7158 | *functionname_ptr = bfd_asymbol_name (func); | |
7159 | ||
b34976b6 | 7160 | return TRUE; |
d1fad7c6 NC |
7161 | } |
7162 | ||
7163 | /* Find the nearest line to a particular section and offset, | |
7164 | for error reporting. */ | |
7165 | ||
b34976b6 | 7166 | bfd_boolean |
217aa764 AM |
7167 | _bfd_elf_find_nearest_line (bfd *abfd, |
7168 | asection *section, | |
7169 | asymbol **symbols, | |
7170 | bfd_vma offset, | |
7171 | const char **filename_ptr, | |
7172 | const char **functionname_ptr, | |
7173 | unsigned int *line_ptr) | |
d1fad7c6 | 7174 | { |
b34976b6 | 7175 | bfd_boolean found; |
d1fad7c6 NC |
7176 | |
7177 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7178 | filename_ptr, functionname_ptr, |
7179 | line_ptr)) | |
d1fad7c6 NC |
7180 | { |
7181 | if (!*functionname_ptr) | |
4e8a9624 AM |
7182 | elf_find_function (abfd, section, symbols, offset, |
7183 | *filename_ptr ? NULL : filename_ptr, | |
7184 | functionname_ptr); | |
7185 | ||
b34976b6 | 7186 | return TRUE; |
d1fad7c6 NC |
7187 | } |
7188 | ||
7189 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7190 | filename_ptr, functionname_ptr, |
7191 | line_ptr, 0, | |
7192 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7193 | { |
7194 | if (!*functionname_ptr) | |
4e8a9624 AM |
7195 | elf_find_function (abfd, section, symbols, offset, |
7196 | *filename_ptr ? NULL : filename_ptr, | |
7197 | functionname_ptr); | |
7198 | ||
b34976b6 | 7199 | return TRUE; |
d1fad7c6 NC |
7200 | } |
7201 | ||
7202 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7203 | &found, filename_ptr, |
7204 | functionname_ptr, line_ptr, | |
7205 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7206 | return FALSE; |
dc43ada5 | 7207 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7208 | return TRUE; |
d1fad7c6 NC |
7209 | |
7210 | if (symbols == NULL) | |
b34976b6 | 7211 | return FALSE; |
d1fad7c6 NC |
7212 | |
7213 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7214 | filename_ptr, functionname_ptr)) |
b34976b6 | 7215 | return FALSE; |
d1fad7c6 | 7216 | |
252b5132 | 7217 | *line_ptr = 0; |
b34976b6 | 7218 | return TRUE; |
252b5132 RH |
7219 | } |
7220 | ||
5420f73d L |
7221 | /* Find the line for a symbol. */ |
7222 | ||
7223 | bfd_boolean | |
7224 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7225 | const char **filename_ptr, unsigned int *line_ptr) | |
7226 | { | |
7227 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7228 | filename_ptr, line_ptr, 0, | |
7229 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7230 | } | |
7231 | ||
4ab527b0 FF |
7232 | /* After a call to bfd_find_nearest_line, successive calls to |
7233 | bfd_find_inliner_info can be used to get source information about | |
7234 | each level of function inlining that terminated at the address | |
7235 | passed to bfd_find_nearest_line. Currently this is only supported | |
7236 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7237 | ||
7238 | bfd_boolean | |
7239 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7240 | const char **filename_ptr, | |
7241 | const char **functionname_ptr, | |
7242 | unsigned int *line_ptr) | |
7243 | { | |
7244 | bfd_boolean found; | |
7245 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7246 | functionname_ptr, line_ptr, | |
7247 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7248 | return found; | |
7249 | } | |
7250 | ||
252b5132 | 7251 | int |
a6b96beb | 7252 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7253 | { |
8ded5a0f AM |
7254 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7255 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7256 | |
a6b96beb | 7257 | if (!info->relocatable) |
8ded5a0f | 7258 | { |
62d7a5f6 | 7259 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7260 | |
62d7a5f6 AM |
7261 | if (phdr_size == (bfd_size_type) -1) |
7262 | { | |
7263 | struct elf_segment_map *m; | |
7264 | ||
7265 | phdr_size = 0; | |
7266 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7267 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7268 | |
62d7a5f6 AM |
7269 | if (phdr_size == 0) |
7270 | phdr_size = get_program_header_size (abfd, info); | |
7271 | } | |
8ded5a0f AM |
7272 | |
7273 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7274 | ret += phdr_size; | |
7275 | } | |
7276 | ||
252b5132 RH |
7277 | return ret; |
7278 | } | |
7279 | ||
b34976b6 | 7280 | bfd_boolean |
217aa764 AM |
7281 | _bfd_elf_set_section_contents (bfd *abfd, |
7282 | sec_ptr section, | |
0f867abe | 7283 | const void *location, |
217aa764 AM |
7284 | file_ptr offset, |
7285 | bfd_size_type count) | |
252b5132 RH |
7286 | { |
7287 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7288 | bfd_signed_vma pos; |
252b5132 RH |
7289 | |
7290 | if (! abfd->output_has_begun | |
217aa764 | 7291 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7292 | return FALSE; |
252b5132 RH |
7293 | |
7294 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7295 | pos = hdr->sh_offset + offset; |
7296 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7297 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7298 | return FALSE; |
252b5132 | 7299 | |
b34976b6 | 7300 | return TRUE; |
252b5132 RH |
7301 | } |
7302 | ||
7303 | void | |
217aa764 AM |
7304 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7305 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7306 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7307 | { |
7308 | abort (); | |
7309 | } | |
7310 | ||
252b5132 RH |
7311 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7312 | ||
b34976b6 | 7313 | bfd_boolean |
217aa764 | 7314 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7315 | { |
c044fabd | 7316 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7317 | |
7318 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7319 | { | |
7320 | bfd_reloc_code_real_type code; | |
7321 | reloc_howto_type *howto; | |
7322 | ||
7323 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7324 | equivalent ELF reloc. */ |
252b5132 RH |
7325 | |
7326 | if (areloc->howto->pc_relative) | |
7327 | { | |
7328 | switch (areloc->howto->bitsize) | |
7329 | { | |
7330 | case 8: | |
7331 | code = BFD_RELOC_8_PCREL; | |
7332 | break; | |
7333 | case 12: | |
7334 | code = BFD_RELOC_12_PCREL; | |
7335 | break; | |
7336 | case 16: | |
7337 | code = BFD_RELOC_16_PCREL; | |
7338 | break; | |
7339 | case 24: | |
7340 | code = BFD_RELOC_24_PCREL; | |
7341 | break; | |
7342 | case 32: | |
7343 | code = BFD_RELOC_32_PCREL; | |
7344 | break; | |
7345 | case 64: | |
7346 | code = BFD_RELOC_64_PCREL; | |
7347 | break; | |
7348 | default: | |
7349 | goto fail; | |
7350 | } | |
7351 | ||
7352 | howto = bfd_reloc_type_lookup (abfd, code); | |
7353 | ||
7354 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7355 | { | |
7356 | if (howto->pcrel_offset) | |
7357 | areloc->addend += areloc->address; | |
7358 | else | |
7359 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7360 | } | |
7361 | } | |
7362 | else | |
7363 | { | |
7364 | switch (areloc->howto->bitsize) | |
7365 | { | |
7366 | case 8: | |
7367 | code = BFD_RELOC_8; | |
7368 | break; | |
7369 | case 14: | |
7370 | code = BFD_RELOC_14; | |
7371 | break; | |
7372 | case 16: | |
7373 | code = BFD_RELOC_16; | |
7374 | break; | |
7375 | case 26: | |
7376 | code = BFD_RELOC_26; | |
7377 | break; | |
7378 | case 32: | |
7379 | code = BFD_RELOC_32; | |
7380 | break; | |
7381 | case 64: | |
7382 | code = BFD_RELOC_64; | |
7383 | break; | |
7384 | default: | |
7385 | goto fail; | |
7386 | } | |
7387 | ||
7388 | howto = bfd_reloc_type_lookup (abfd, code); | |
7389 | } | |
7390 | ||
7391 | if (howto) | |
7392 | areloc->howto = howto; | |
7393 | else | |
7394 | goto fail; | |
7395 | } | |
7396 | ||
b34976b6 | 7397 | return TRUE; |
252b5132 RH |
7398 | |
7399 | fail: | |
7400 | (*_bfd_error_handler) | |
d003868e AM |
7401 | (_("%B: unsupported relocation type %s"), |
7402 | abfd, areloc->howto->name); | |
252b5132 | 7403 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7404 | return FALSE; |
252b5132 RH |
7405 | } |
7406 | ||
b34976b6 | 7407 | bfd_boolean |
217aa764 | 7408 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7409 | { |
7410 | if (bfd_get_format (abfd) == bfd_object) | |
7411 | { | |
b25e3d87 | 7412 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7413 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7414 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7415 | } |
7416 | ||
7417 | return _bfd_generic_close_and_cleanup (abfd); | |
7418 | } | |
7419 | ||
7420 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7421 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7422 | range-checking to interfere. There is nothing else to do in processing | |
7423 | this reloc. */ | |
7424 | ||
7425 | bfd_reloc_status_type | |
217aa764 AM |
7426 | _bfd_elf_rel_vtable_reloc_fn |
7427 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7428 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7429 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7430 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7431 | { |
7432 | return bfd_reloc_ok; | |
7433 | } | |
252b5132 RH |
7434 | \f |
7435 | /* Elf core file support. Much of this only works on native | |
7436 | toolchains, since we rely on knowing the | |
7437 | machine-dependent procfs structure in order to pick | |
c044fabd | 7438 | out details about the corefile. */ |
252b5132 RH |
7439 | |
7440 | #ifdef HAVE_SYS_PROCFS_H | |
7441 | # include <sys/procfs.h> | |
7442 | #endif | |
7443 | ||
c044fabd | 7444 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7445 | |
7446 | static int | |
217aa764 | 7447 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7448 | { |
7449 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7450 | + (elf_tdata (abfd)->core_pid)); | |
7451 | } | |
7452 | ||
252b5132 RH |
7453 | /* If there isn't a section called NAME, make one, using |
7454 | data from SECT. Note, this function will generate a | |
7455 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7456 | overwrite it. */ |
252b5132 | 7457 | |
b34976b6 | 7458 | static bfd_boolean |
217aa764 | 7459 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7460 | { |
c044fabd | 7461 | asection *sect2; |
252b5132 RH |
7462 | |
7463 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7464 | return TRUE; |
252b5132 | 7465 | |
117ed4f8 | 7466 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7467 | if (sect2 == NULL) |
b34976b6 | 7468 | return FALSE; |
252b5132 | 7469 | |
eea6121a | 7470 | sect2->size = sect->size; |
252b5132 | 7471 | sect2->filepos = sect->filepos; |
252b5132 | 7472 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7473 | return TRUE; |
252b5132 RH |
7474 | } |
7475 | ||
bb0082d6 AM |
7476 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7477 | actually creates up to two pseudosections: | |
7478 | - For the single-threaded case, a section named NAME, unless | |
7479 | such a section already exists. | |
7480 | - For the multi-threaded case, a section named "NAME/PID", where | |
7481 | PID is elfcore_make_pid (abfd). | |
7482 | Both pseudosections have identical contents. */ | |
b34976b6 | 7483 | bfd_boolean |
217aa764 AM |
7484 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7485 | char *name, | |
7486 | size_t size, | |
7487 | ufile_ptr filepos) | |
bb0082d6 AM |
7488 | { |
7489 | char buf[100]; | |
7490 | char *threaded_name; | |
d4c88bbb | 7491 | size_t len; |
bb0082d6 AM |
7492 | asection *sect; |
7493 | ||
7494 | /* Build the section name. */ | |
7495 | ||
7496 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7497 | len = strlen (buf) + 1; |
217aa764 | 7498 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7499 | if (threaded_name == NULL) |
b34976b6 | 7500 | return FALSE; |
d4c88bbb | 7501 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7502 | |
117ed4f8 AM |
7503 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7504 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7505 | if (sect == NULL) |
b34976b6 | 7506 | return FALSE; |
eea6121a | 7507 | sect->size = size; |
bb0082d6 | 7508 | sect->filepos = filepos; |
bb0082d6 AM |
7509 | sect->alignment_power = 2; |
7510 | ||
936e320b | 7511 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7512 | } |
7513 | ||
252b5132 | 7514 | /* prstatus_t exists on: |
4a938328 | 7515 | solaris 2.5+ |
252b5132 RH |
7516 | linux 2.[01] + glibc |
7517 | unixware 4.2 | |
7518 | */ | |
7519 | ||
7520 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7521 | |
b34976b6 | 7522 | static bfd_boolean |
217aa764 | 7523 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7524 | { |
eea6121a | 7525 | size_t size; |
7ee38065 | 7526 | int offset; |
252b5132 | 7527 | |
4a938328 MS |
7528 | if (note->descsz == sizeof (prstatus_t)) |
7529 | { | |
7530 | prstatus_t prstat; | |
252b5132 | 7531 | |
eea6121a | 7532 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7533 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7534 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7535 | |
fa49d224 NC |
7536 | /* Do not overwrite the core signal if it |
7537 | has already been set by another thread. */ | |
7538 | if (elf_tdata (abfd)->core_signal == 0) | |
7539 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7540 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7541 | |
4a938328 MS |
7542 | /* pr_who exists on: |
7543 | solaris 2.5+ | |
7544 | unixware 4.2 | |
7545 | pr_who doesn't exist on: | |
7546 | linux 2.[01] | |
7547 | */ | |
252b5132 | 7548 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7549 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7550 | #endif |
4a938328 | 7551 | } |
7ee38065 | 7552 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7553 | else if (note->descsz == sizeof (prstatus32_t)) |
7554 | { | |
7555 | /* 64-bit host, 32-bit corefile */ | |
7556 | prstatus32_t prstat; | |
7557 | ||
eea6121a | 7558 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7559 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7560 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7561 | ||
fa49d224 NC |
7562 | /* Do not overwrite the core signal if it |
7563 | has already been set by another thread. */ | |
7564 | if (elf_tdata (abfd)->core_signal == 0) | |
7565 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7566 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7567 | ||
7568 | /* pr_who exists on: | |
7569 | solaris 2.5+ | |
7570 | unixware 4.2 | |
7571 | pr_who doesn't exist on: | |
7572 | linux 2.[01] | |
7573 | */ | |
7ee38065 | 7574 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7575 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7576 | #endif | |
7577 | } | |
7ee38065 | 7578 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7579 | else |
7580 | { | |
7581 | /* Fail - we don't know how to handle any other | |
7582 | note size (ie. data object type). */ | |
b34976b6 | 7583 | return TRUE; |
4a938328 | 7584 | } |
252b5132 | 7585 | |
bb0082d6 | 7586 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7587 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7588 | size, note->descpos + offset); |
252b5132 RH |
7589 | } |
7590 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7591 | ||
bb0082d6 | 7592 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7593 | static bfd_boolean |
217aa764 AM |
7594 | elfcore_make_note_pseudosection (bfd *abfd, |
7595 | char *name, | |
7596 | Elf_Internal_Note *note) | |
252b5132 | 7597 | { |
936e320b AM |
7598 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7599 | note->descsz, note->descpos); | |
252b5132 RH |
7600 | } |
7601 | ||
ff08c6bb JB |
7602 | /* There isn't a consistent prfpregset_t across platforms, |
7603 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7604 | data structure apart. */ |
7605 | ||
b34976b6 | 7606 | static bfd_boolean |
217aa764 | 7607 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7608 | { |
7609 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7610 | } | |
7611 | ||
ff08c6bb JB |
7612 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7613 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7614 | literally. */ | |
c044fabd | 7615 | |
b34976b6 | 7616 | static bfd_boolean |
217aa764 | 7617 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7618 | { |
7619 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7620 | } | |
7621 | ||
252b5132 | 7622 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7623 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7624 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7625 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7626 | #endif | |
252b5132 RH |
7627 | #endif |
7628 | ||
7629 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7630 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7631 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7632 | typedef psinfo32_t elfcore_psinfo32_t; |
7633 | #endif | |
252b5132 RH |
7634 | #endif |
7635 | ||
252b5132 RH |
7636 | /* return a malloc'ed copy of a string at START which is at |
7637 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7638 | the copy will always have a terminating '\0'. */ |
252b5132 | 7639 | |
936e320b | 7640 | char * |
217aa764 | 7641 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7642 | { |
dc810e39 | 7643 | char *dups; |
c044fabd | 7644 | char *end = memchr (start, '\0', max); |
dc810e39 | 7645 | size_t len; |
252b5132 RH |
7646 | |
7647 | if (end == NULL) | |
7648 | len = max; | |
7649 | else | |
7650 | len = end - start; | |
7651 | ||
217aa764 | 7652 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7653 | if (dups == NULL) |
252b5132 RH |
7654 | return NULL; |
7655 | ||
dc810e39 AM |
7656 | memcpy (dups, start, len); |
7657 | dups[len] = '\0'; | |
252b5132 | 7658 | |
dc810e39 | 7659 | return dups; |
252b5132 RH |
7660 | } |
7661 | ||
bb0082d6 | 7662 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7663 | static bfd_boolean |
217aa764 | 7664 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7665 | { |
4a938328 MS |
7666 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7667 | { | |
7668 | elfcore_psinfo_t psinfo; | |
252b5132 | 7669 | |
7ee38065 | 7670 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7671 | |
4a938328 | 7672 | elf_tdata (abfd)->core_program |
936e320b AM |
7673 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7674 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7675 | |
4a938328 | 7676 | elf_tdata (abfd)->core_command |
936e320b AM |
7677 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7678 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7679 | } |
7ee38065 | 7680 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7681 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7682 | { | |
7683 | /* 64-bit host, 32-bit corefile */ | |
7684 | elfcore_psinfo32_t psinfo; | |
7685 | ||
7ee38065 | 7686 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7687 | |
4a938328 | 7688 | elf_tdata (abfd)->core_program |
936e320b AM |
7689 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7690 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7691 | |
7692 | elf_tdata (abfd)->core_command | |
936e320b AM |
7693 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7694 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7695 | } |
7696 | #endif | |
7697 | ||
7698 | else | |
7699 | { | |
7700 | /* Fail - we don't know how to handle any other | |
7701 | note size (ie. data object type). */ | |
b34976b6 | 7702 | return TRUE; |
4a938328 | 7703 | } |
252b5132 RH |
7704 | |
7705 | /* Note that for some reason, a spurious space is tacked | |
7706 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7707 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7708 | |
7709 | { | |
c044fabd | 7710 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7711 | int n = strlen (command); |
7712 | ||
7713 | if (0 < n && command[n - 1] == ' ') | |
7714 | command[n - 1] = '\0'; | |
7715 | } | |
7716 | ||
b34976b6 | 7717 | return TRUE; |
252b5132 RH |
7718 | } |
7719 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7720 | ||
252b5132 | 7721 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7722 | static bfd_boolean |
217aa764 | 7723 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7724 | { |
f572a39d AM |
7725 | if (note->descsz == sizeof (pstatus_t) |
7726 | #if defined (HAVE_PXSTATUS_T) | |
7727 | || note->descsz == sizeof (pxstatus_t) | |
7728 | #endif | |
7729 | ) | |
4a938328 MS |
7730 | { |
7731 | pstatus_t pstat; | |
252b5132 | 7732 | |
4a938328 | 7733 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7734 | |
4a938328 MS |
7735 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7736 | } | |
7ee38065 | 7737 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7738 | else if (note->descsz == sizeof (pstatus32_t)) |
7739 | { | |
7740 | /* 64-bit host, 32-bit corefile */ | |
7741 | pstatus32_t pstat; | |
252b5132 | 7742 | |
4a938328 | 7743 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7744 | |
4a938328 MS |
7745 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7746 | } | |
7747 | #endif | |
252b5132 RH |
7748 | /* Could grab some more details from the "representative" |
7749 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7750 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7751 | |
b34976b6 | 7752 | return TRUE; |
252b5132 RH |
7753 | } |
7754 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7755 | ||
252b5132 | 7756 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7757 | static bfd_boolean |
217aa764 | 7758 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7759 | { |
7760 | lwpstatus_t lwpstat; | |
7761 | char buf[100]; | |
c044fabd | 7762 | char *name; |
d4c88bbb | 7763 | size_t len; |
c044fabd | 7764 | asection *sect; |
252b5132 | 7765 | |
f572a39d AM |
7766 | if (note->descsz != sizeof (lwpstat) |
7767 | #if defined (HAVE_LWPXSTATUS_T) | |
7768 | && note->descsz != sizeof (lwpxstatus_t) | |
7769 | #endif | |
7770 | ) | |
b34976b6 | 7771 | return TRUE; |
252b5132 RH |
7772 | |
7773 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7774 | ||
7775 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7776 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7777 | ||
c044fabd | 7778 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7779 | |
7780 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7781 | len = strlen (buf) + 1; |
217aa764 | 7782 | name = bfd_alloc (abfd, len); |
252b5132 | 7783 | if (name == NULL) |
b34976b6 | 7784 | return FALSE; |
d4c88bbb | 7785 | memcpy (name, buf, len); |
252b5132 | 7786 | |
117ed4f8 | 7787 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7788 | if (sect == NULL) |
b34976b6 | 7789 | return FALSE; |
252b5132 RH |
7790 | |
7791 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7792 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7793 | sect->filepos = note->descpos |
7794 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7795 | #endif | |
7796 | ||
7797 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7798 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7799 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7800 | #endif | |
7801 | ||
252b5132 RH |
7802 | sect->alignment_power = 2; |
7803 | ||
7804 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7805 | return FALSE; |
252b5132 RH |
7806 | |
7807 | /* Make a ".reg2/999" section */ | |
7808 | ||
7809 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7810 | len = strlen (buf) + 1; |
217aa764 | 7811 | name = bfd_alloc (abfd, len); |
252b5132 | 7812 | if (name == NULL) |
b34976b6 | 7813 | return FALSE; |
d4c88bbb | 7814 | memcpy (name, buf, len); |
252b5132 | 7815 | |
117ed4f8 | 7816 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7817 | if (sect == NULL) |
b34976b6 | 7818 | return FALSE; |
252b5132 RH |
7819 | |
7820 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7821 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7822 | sect->filepos = note->descpos |
7823 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7824 | #endif | |
7825 | ||
7826 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7827 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7828 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7829 | #endif | |
7830 | ||
252b5132 RH |
7831 | sect->alignment_power = 2; |
7832 | ||
936e320b | 7833 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7834 | } |
7835 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7836 | ||
16e9c715 | 7837 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7838 | static bfd_boolean |
217aa764 | 7839 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7840 | { |
7841 | char buf[30]; | |
c044fabd | 7842 | char *name; |
d4c88bbb | 7843 | size_t len; |
c044fabd | 7844 | asection *sect; |
16e9c715 NC |
7845 | win32_pstatus_t pstatus; |
7846 | ||
7847 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7848 | return TRUE; |
16e9c715 | 7849 | |
e8eab623 | 7850 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7851 | |
7852 | switch (pstatus.data_type) | |
16e9c715 NC |
7853 | { |
7854 | case NOTE_INFO_PROCESS: | |
7855 | /* FIXME: need to add ->core_command. */ | |
7856 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7857 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7858 | break; |
16e9c715 NC |
7859 | |
7860 | case NOTE_INFO_THREAD: | |
7861 | /* Make a ".reg/999" section. */ | |
1f170678 | 7862 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7863 | |
d4c88bbb | 7864 | len = strlen (buf) + 1; |
217aa764 | 7865 | name = bfd_alloc (abfd, len); |
16e9c715 | 7866 | if (name == NULL) |
b34976b6 | 7867 | return FALSE; |
c044fabd | 7868 | |
d4c88bbb | 7869 | memcpy (name, buf, len); |
16e9c715 | 7870 | |
117ed4f8 | 7871 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7872 | if (sect == NULL) |
b34976b6 | 7873 | return FALSE; |
c044fabd | 7874 | |
eea6121a | 7875 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7876 | sect->filepos = (note->descpos |
7877 | + offsetof (struct win32_pstatus, | |
7878 | data.thread_info.thread_context)); | |
16e9c715 NC |
7879 | sect->alignment_power = 2; |
7880 | ||
7881 | if (pstatus.data.thread_info.is_active_thread) | |
7882 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7883 | return FALSE; |
16e9c715 NC |
7884 | break; |
7885 | ||
7886 | case NOTE_INFO_MODULE: | |
7887 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7888 | sprintf (buf, ".module/%08lx", |
7889 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7890 | |
d4c88bbb | 7891 | len = strlen (buf) + 1; |
217aa764 | 7892 | name = bfd_alloc (abfd, len); |
16e9c715 | 7893 | if (name == NULL) |
b34976b6 | 7894 | return FALSE; |
c044fabd | 7895 | |
d4c88bbb | 7896 | memcpy (name, buf, len); |
252b5132 | 7897 | |
117ed4f8 | 7898 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7899 | |
16e9c715 | 7900 | if (sect == NULL) |
b34976b6 | 7901 | return FALSE; |
c044fabd | 7902 | |
eea6121a | 7903 | sect->size = note->descsz; |
16e9c715 | 7904 | sect->filepos = note->descpos; |
16e9c715 NC |
7905 | sect->alignment_power = 2; |
7906 | break; | |
7907 | ||
7908 | default: | |
b34976b6 | 7909 | return TRUE; |
16e9c715 NC |
7910 | } |
7911 | ||
b34976b6 | 7912 | return TRUE; |
16e9c715 NC |
7913 | } |
7914 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7915 | |
b34976b6 | 7916 | static bfd_boolean |
217aa764 | 7917 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7918 | { |
9c5bfbb7 | 7919 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7920 | |
252b5132 RH |
7921 | switch (note->type) |
7922 | { | |
7923 | default: | |
b34976b6 | 7924 | return TRUE; |
252b5132 | 7925 | |
252b5132 | 7926 | case NT_PRSTATUS: |
bb0082d6 AM |
7927 | if (bed->elf_backend_grok_prstatus) |
7928 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7929 | return TRUE; |
bb0082d6 | 7930 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7931 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7932 | #else |
b34976b6 | 7933 | return TRUE; |
252b5132 RH |
7934 | #endif |
7935 | ||
7936 | #if defined (HAVE_PSTATUS_T) | |
7937 | case NT_PSTATUS: | |
7938 | return elfcore_grok_pstatus (abfd, note); | |
7939 | #endif | |
7940 | ||
7941 | #if defined (HAVE_LWPSTATUS_T) | |
7942 | case NT_LWPSTATUS: | |
7943 | return elfcore_grok_lwpstatus (abfd, note); | |
7944 | #endif | |
7945 | ||
7946 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7947 | return elfcore_grok_prfpreg (abfd, note); | |
7948 | ||
16e9c715 | 7949 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7950 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7951 | return elfcore_grok_win32pstatus (abfd, note); |
7952 | #endif | |
7953 | ||
c044fabd | 7954 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7955 | if (note->namesz == 6 |
7956 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7957 | return elfcore_grok_prxfpreg (abfd, note); |
7958 | else | |
b34976b6 | 7959 | return TRUE; |
ff08c6bb | 7960 | |
252b5132 RH |
7961 | case NT_PRPSINFO: |
7962 | case NT_PSINFO: | |
bb0082d6 AM |
7963 | if (bed->elf_backend_grok_psinfo) |
7964 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7965 | return TRUE; |
bb0082d6 | 7966 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7967 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7968 | #else |
b34976b6 | 7969 | return TRUE; |
252b5132 | 7970 | #endif |
3333a7c3 RM |
7971 | |
7972 | case NT_AUXV: | |
7973 | { | |
117ed4f8 AM |
7974 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7975 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7976 | |
7977 | if (sect == NULL) | |
7978 | return FALSE; | |
eea6121a | 7979 | sect->size = note->descsz; |
3333a7c3 | 7980 | sect->filepos = note->descpos; |
3333a7c3 RM |
7981 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7982 | ||
7983 | return TRUE; | |
7984 | } | |
252b5132 RH |
7985 | } |
7986 | } | |
7987 | ||
b34976b6 | 7988 | static bfd_boolean |
217aa764 | 7989 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7990 | { |
7991 | char *cp; | |
7992 | ||
7993 | cp = strchr (note->namedata, '@'); | |
7994 | if (cp != NULL) | |
7995 | { | |
d2b64500 | 7996 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7997 | return TRUE; |
50b2bdb7 | 7998 | } |
b34976b6 | 7999 | return FALSE; |
50b2bdb7 AM |
8000 | } |
8001 | ||
b34976b6 | 8002 | static bfd_boolean |
217aa764 | 8003 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 8004 | { |
50b2bdb7 AM |
8005 | /* Signal number at offset 0x08. */ |
8006 | elf_tdata (abfd)->core_signal | |
8007 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8008 | ||
8009 | /* Process ID at offset 0x50. */ | |
8010 | elf_tdata (abfd)->core_pid | |
8011 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
8012 | ||
8013 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
8014 | elf_tdata (abfd)->core_command | |
8015 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
8016 | ||
7720ba9f MK |
8017 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
8018 | note); | |
50b2bdb7 AM |
8019 | } |
8020 | ||
b34976b6 | 8021 | static bfd_boolean |
217aa764 | 8022 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8023 | { |
8024 | int lwp; | |
8025 | ||
8026 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
8027 | elf_tdata (abfd)->core_lwpid = lwp; | |
8028 | ||
b4db1224 | 8029 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
8030 | { |
8031 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
8032 | find this note before any of the others, which is fine, |
8033 | since the kernel writes this note out first when it | |
8034 | creates a core file. */ | |
47d9a591 | 8035 | |
50b2bdb7 AM |
8036 | return elfcore_grok_netbsd_procinfo (abfd, note); |
8037 | } | |
8038 | ||
b4db1224 JT |
8039 | /* As of Jan 2002 there are no other machine-independent notes |
8040 | defined for NetBSD core files. If the note type is less | |
8041 | than the start of the machine-dependent note types, we don't | |
8042 | understand it. */ | |
47d9a591 | 8043 | |
b4db1224 | 8044 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 8045 | return TRUE; |
50b2bdb7 AM |
8046 | |
8047 | ||
8048 | switch (bfd_get_arch (abfd)) | |
8049 | { | |
08a40648 AM |
8050 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
8051 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
8052 | |
8053 | case bfd_arch_alpha: | |
8054 | case bfd_arch_sparc: | |
8055 | switch (note->type) | |
08a40648 AM |
8056 | { |
8057 | case NT_NETBSDCORE_FIRSTMACH+0: | |
8058 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8059 | |
08a40648 AM |
8060 | case NT_NETBSDCORE_FIRSTMACH+2: |
8061 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8062 | |
08a40648 AM |
8063 | default: |
8064 | return TRUE; | |
8065 | } | |
50b2bdb7 | 8066 | |
08a40648 AM |
8067 | /* On all other arch's, PT_GETREGS == mach+1 and |
8068 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
8069 | |
8070 | default: | |
8071 | switch (note->type) | |
08a40648 AM |
8072 | { |
8073 | case NT_NETBSDCORE_FIRSTMACH+1: | |
8074 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 8075 | |
08a40648 AM |
8076 | case NT_NETBSDCORE_FIRSTMACH+3: |
8077 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 8078 | |
08a40648 AM |
8079 | default: |
8080 | return TRUE; | |
8081 | } | |
50b2bdb7 AM |
8082 | } |
8083 | /* NOTREACHED */ | |
8084 | } | |
8085 | ||
07c6e936 | 8086 | static bfd_boolean |
d3fd4074 | 8087 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
8088 | { |
8089 | void *ddata = note->descdata; | |
8090 | char buf[100]; | |
8091 | char *name; | |
8092 | asection *sect; | |
f8843e87 AM |
8093 | short sig; |
8094 | unsigned flags; | |
07c6e936 NC |
8095 | |
8096 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
8097 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
8098 | ||
f8843e87 AM |
8099 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
8100 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
8101 | ||
8102 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
8103 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
8104 | |
8105 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
8106 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
8107 | { | |
8108 | elf_tdata (abfd)->core_signal = sig; | |
8109 | elf_tdata (abfd)->core_lwpid = *tid; | |
8110 | } | |
07c6e936 | 8111 | |
f8843e87 AM |
8112 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8113 | do not come from signals so we make sure we set the current | |
8114 | thread just in case. */ | |
8115 | if (flags & 0x00000080) | |
8116 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8117 | |
8118 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8119 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8120 | |
217aa764 | 8121 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8122 | if (name == NULL) |
8123 | return FALSE; | |
8124 | strcpy (name, buf); | |
8125 | ||
117ed4f8 | 8126 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8127 | if (sect == NULL) |
8128 | return FALSE; | |
8129 | ||
eea6121a | 8130 | sect->size = note->descsz; |
07c6e936 | 8131 | sect->filepos = note->descpos; |
07c6e936 NC |
8132 | sect->alignment_power = 2; |
8133 | ||
8134 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8135 | } | |
8136 | ||
8137 | static bfd_boolean | |
d69f560c KW |
8138 | elfcore_grok_nto_regs (bfd *abfd, |
8139 | Elf_Internal_Note *note, | |
d3fd4074 | 8140 | long tid, |
d69f560c | 8141 | char *base) |
07c6e936 NC |
8142 | { |
8143 | char buf[100]; | |
8144 | char *name; | |
8145 | asection *sect; | |
8146 | ||
d69f560c | 8147 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8148 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8149 | |
217aa764 | 8150 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8151 | if (name == NULL) |
8152 | return FALSE; | |
8153 | strcpy (name, buf); | |
8154 | ||
117ed4f8 | 8155 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8156 | if (sect == NULL) |
8157 | return FALSE; | |
8158 | ||
eea6121a | 8159 | sect->size = note->descsz; |
07c6e936 | 8160 | sect->filepos = note->descpos; |
07c6e936 NC |
8161 | sect->alignment_power = 2; |
8162 | ||
f8843e87 AM |
8163 | /* This is the current thread. */ |
8164 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8165 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8166 | |
8167 | return TRUE; | |
07c6e936 NC |
8168 | } |
8169 | ||
8170 | #define BFD_QNT_CORE_INFO 7 | |
8171 | #define BFD_QNT_CORE_STATUS 8 | |
8172 | #define BFD_QNT_CORE_GREG 9 | |
8173 | #define BFD_QNT_CORE_FPREG 10 | |
8174 | ||
8175 | static bfd_boolean | |
217aa764 | 8176 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8177 | { |
8178 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8179 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8180 | function. */ |
d3fd4074 | 8181 | static long tid = 1; |
07c6e936 NC |
8182 | |
8183 | switch (note->type) | |
8184 | { | |
d69f560c KW |
8185 | case BFD_QNT_CORE_INFO: |
8186 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8187 | case BFD_QNT_CORE_STATUS: | |
8188 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8189 | case BFD_QNT_CORE_GREG: | |
8190 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8191 | case BFD_QNT_CORE_FPREG: | |
8192 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8193 | default: | |
8194 | return TRUE; | |
07c6e936 NC |
8195 | } |
8196 | } | |
8197 | ||
7c76fa91 MS |
8198 | /* Function: elfcore_write_note |
8199 | ||
47d9a591 | 8200 | Inputs: |
a39f3346 | 8201 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8202 | name of note |
8203 | type of note | |
8204 | data for note | |
8205 | size of data for note | |
8206 | ||
a39f3346 AM |
8207 | Writes note to end of buffer. ELF64 notes are written exactly as |
8208 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8209 | that they ought to have 8-byte namesz and descsz field, and have | |
8210 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8211 | ||
7c76fa91 | 8212 | Return: |
a39f3346 | 8213 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8214 | |
8215 | char * | |
a39f3346 | 8216 | elfcore_write_note (bfd *abfd, |
217aa764 | 8217 | char *buf, |
a39f3346 | 8218 | int *bufsiz, |
217aa764 | 8219 | const char *name, |
a39f3346 | 8220 | int type, |
217aa764 | 8221 | const void *input, |
a39f3346 | 8222 | int size) |
7c76fa91 MS |
8223 | { |
8224 | Elf_External_Note *xnp; | |
d4c88bbb | 8225 | size_t namesz; |
d4c88bbb | 8226 | size_t newspace; |
a39f3346 | 8227 | char *dest; |
7c76fa91 | 8228 | |
d4c88bbb | 8229 | namesz = 0; |
d4c88bbb | 8230 | if (name != NULL) |
a39f3346 | 8231 | namesz = strlen (name) + 1; |
d4c88bbb | 8232 | |
a39f3346 | 8233 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8234 | |
a39f3346 AM |
8235 | buf = realloc (buf, *bufsiz + newspace); |
8236 | dest = buf + *bufsiz; | |
7c76fa91 MS |
8237 | *bufsiz += newspace; |
8238 | xnp = (Elf_External_Note *) dest; | |
8239 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8240 | H_PUT_32 (abfd, size, xnp->descsz); | |
8241 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8242 | dest = xnp->name; |
8243 | if (name != NULL) | |
8244 | { | |
8245 | memcpy (dest, name, namesz); | |
8246 | dest += namesz; | |
a39f3346 | 8247 | while (namesz & 3) |
d4c88bbb AM |
8248 | { |
8249 | *dest++ = '\0'; | |
a39f3346 | 8250 | ++namesz; |
d4c88bbb AM |
8251 | } |
8252 | } | |
8253 | memcpy (dest, input, size); | |
a39f3346 AM |
8254 | dest += size; |
8255 | while (size & 3) | |
8256 | { | |
8257 | *dest++ = '\0'; | |
8258 | ++size; | |
8259 | } | |
8260 | return buf; | |
7c76fa91 MS |
8261 | } |
8262 | ||
8263 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8264 | char * | |
217aa764 AM |
8265 | elfcore_write_prpsinfo (bfd *abfd, |
8266 | char *buf, | |
8267 | int *bufsiz, | |
8268 | const char *fname, | |
8269 | const char *psargs) | |
7c76fa91 | 8270 | { |
183e98be AM |
8271 | const char *note_name = "CORE"; |
8272 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8273 | ||
8274 | if (bed->elf_backend_write_core_note != NULL) | |
8275 | { | |
8276 | char *ret; | |
8277 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8278 | NT_PRPSINFO, fname, psargs); | |
8279 | if (ret != NULL) | |
8280 | return ret; | |
8281 | } | |
7c76fa91 | 8282 | |
183e98be AM |
8283 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8284 | if (bed->s->elfclass == ELFCLASS32) | |
8285 | { | |
8286 | #if defined (HAVE_PSINFO32_T) | |
8287 | psinfo32_t data; | |
8288 | int note_type = NT_PSINFO; | |
8289 | #else | |
8290 | prpsinfo32_t data; | |
8291 | int note_type = NT_PRPSINFO; | |
8292 | #endif | |
8293 | ||
8294 | memset (&data, 0, sizeof (data)); | |
8295 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8296 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8297 | return elfcore_write_note (abfd, buf, bufsiz, | |
8298 | note_name, note_type, &data, sizeof (data)); | |
8299 | } | |
8300 | else | |
8301 | #endif | |
8302 | { | |
7c76fa91 | 8303 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8304 | psinfo_t data; |
8305 | int note_type = NT_PSINFO; | |
7c76fa91 | 8306 | #else |
183e98be AM |
8307 | prpsinfo_t data; |
8308 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8309 | #endif |
8310 | ||
183e98be AM |
8311 | memset (&data, 0, sizeof (data)); |
8312 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8313 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8314 | return elfcore_write_note (abfd, buf, bufsiz, | |
8315 | note_name, note_type, &data, sizeof (data)); | |
8316 | } | |
7c76fa91 MS |
8317 | } |
8318 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8319 | ||
8320 | #if defined (HAVE_PRSTATUS_T) | |
8321 | char * | |
217aa764 AM |
8322 | elfcore_write_prstatus (bfd *abfd, |
8323 | char *buf, | |
8324 | int *bufsiz, | |
8325 | long pid, | |
8326 | int cursig, | |
8327 | const void *gregs) | |
7c76fa91 | 8328 | { |
183e98be AM |
8329 | const char *note_name = "CORE"; |
8330 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8331 | |
183e98be AM |
8332 | if (bed->elf_backend_write_core_note != NULL) |
8333 | { | |
8334 | char *ret; | |
8335 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8336 | NT_PRSTATUS, | |
8337 | pid, cursig, gregs); | |
8338 | if (ret != NULL) | |
8339 | return ret; | |
8340 | } | |
8341 | ||
8342 | #if defined (HAVE_PRSTATUS32_T) | |
8343 | if (bed->s->elfclass == ELFCLASS32) | |
8344 | { | |
8345 | prstatus32_t prstat; | |
8346 | ||
8347 | memset (&prstat, 0, sizeof (prstat)); | |
8348 | prstat.pr_pid = pid; | |
8349 | prstat.pr_cursig = cursig; | |
8350 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8351 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8352 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8353 | } | |
8354 | else | |
8355 | #endif | |
8356 | { | |
8357 | prstatus_t prstat; | |
8358 | ||
8359 | memset (&prstat, 0, sizeof (prstat)); | |
8360 | prstat.pr_pid = pid; | |
8361 | prstat.pr_cursig = cursig; | |
8362 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8363 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8364 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8365 | } | |
7c76fa91 MS |
8366 | } |
8367 | #endif /* HAVE_PRSTATUS_T */ | |
8368 | ||
51316059 MS |
8369 | #if defined (HAVE_LWPSTATUS_T) |
8370 | char * | |
217aa764 AM |
8371 | elfcore_write_lwpstatus (bfd *abfd, |
8372 | char *buf, | |
8373 | int *bufsiz, | |
8374 | long pid, | |
8375 | int cursig, | |
8376 | const void *gregs) | |
51316059 MS |
8377 | { |
8378 | lwpstatus_t lwpstat; | |
183e98be | 8379 | const char *note_name = "CORE"; |
51316059 MS |
8380 | |
8381 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8382 | lwpstat.pr_lwpid = pid >> 16; | |
8383 | lwpstat.pr_cursig = cursig; | |
8384 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8385 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8386 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8387 | #if !defined(gregs) | |
8388 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8389 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8390 | #else | |
8391 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8392 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8393 | #endif | |
8394 | #endif | |
47d9a591 | 8395 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8396 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8397 | } | |
8398 | #endif /* HAVE_LWPSTATUS_T */ | |
8399 | ||
7c76fa91 MS |
8400 | #if defined (HAVE_PSTATUS_T) |
8401 | char * | |
217aa764 AM |
8402 | elfcore_write_pstatus (bfd *abfd, |
8403 | char *buf, | |
8404 | int *bufsiz, | |
8405 | long pid, | |
6c10990d NC |
8406 | int cursig ATTRIBUTE_UNUSED, |
8407 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8408 | { |
183e98be AM |
8409 | const char *note_name = "CORE"; |
8410 | #if defined (HAVE_PSTATUS32_T) | |
8411 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8412 | |
183e98be AM |
8413 | if (bed->s->elfclass == ELFCLASS32) |
8414 | { | |
8415 | pstatus32_t pstat; | |
8416 | ||
8417 | memset (&pstat, 0, sizeof (pstat)); | |
8418 | pstat.pr_pid = pid & 0xffff; | |
8419 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8420 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8421 | return buf; | |
8422 | } | |
8423 | else | |
8424 | #endif | |
8425 | { | |
8426 | pstatus_t pstat; | |
8427 | ||
8428 | memset (&pstat, 0, sizeof (pstat)); | |
8429 | pstat.pr_pid = pid & 0xffff; | |
8430 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8431 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8432 | return buf; | |
8433 | } | |
7c76fa91 MS |
8434 | } |
8435 | #endif /* HAVE_PSTATUS_T */ | |
8436 | ||
8437 | char * | |
217aa764 AM |
8438 | elfcore_write_prfpreg (bfd *abfd, |
8439 | char *buf, | |
8440 | int *bufsiz, | |
8441 | const void *fpregs, | |
8442 | int size) | |
7c76fa91 | 8443 | { |
183e98be | 8444 | const char *note_name = "CORE"; |
47d9a591 | 8445 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8446 | note_name, NT_FPREGSET, fpregs, size); |
8447 | } | |
8448 | ||
8449 | char * | |
217aa764 AM |
8450 | elfcore_write_prxfpreg (bfd *abfd, |
8451 | char *buf, | |
8452 | int *bufsiz, | |
8453 | const void *xfpregs, | |
8454 | int size) | |
7c76fa91 MS |
8455 | { |
8456 | char *note_name = "LINUX"; | |
47d9a591 | 8457 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8458 | note_name, NT_PRXFPREG, xfpregs, size); |
8459 | } | |
8460 | ||
b34976b6 | 8461 | static bfd_boolean |
217aa764 | 8462 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 8463 | { |
c044fabd KH |
8464 | char *buf; |
8465 | char *p; | |
252b5132 RH |
8466 | |
8467 | if (size <= 0) | |
b34976b6 | 8468 | return TRUE; |
252b5132 | 8469 | |
dc810e39 | 8470 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 8471 | return FALSE; |
252b5132 | 8472 | |
dc810e39 | 8473 | buf = bfd_malloc (size); |
252b5132 | 8474 | if (buf == NULL) |
b34976b6 | 8475 | return FALSE; |
252b5132 | 8476 | |
dc810e39 | 8477 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
8478 | { |
8479 | error: | |
8480 | free (buf); | |
b34976b6 | 8481 | return FALSE; |
252b5132 RH |
8482 | } |
8483 | ||
8484 | p = buf; | |
8485 | while (p < buf + size) | |
8486 | { | |
c044fabd KH |
8487 | /* FIXME: bad alignment assumption. */ |
8488 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8489 | Elf_Internal_Note in; |
8490 | ||
dc810e39 | 8491 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8492 | |
dc810e39 | 8493 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8494 | in.namedata = xnp->name; |
8495 | ||
dc810e39 | 8496 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8497 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8498 | in.descpos = offset + (in.descdata - buf); | |
8499 | ||
0112cd26 | 8500 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) |
08a40648 AM |
8501 | { |
8502 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8503 | goto error; | |
8504 | } | |
0112cd26 | 8505 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
07c6e936 NC |
8506 | { |
8507 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8508 | goto error; | |
8509 | } | |
50b2bdb7 | 8510 | else |
08a40648 AM |
8511 | { |
8512 | if (! elfcore_grok_note (abfd, &in)) | |
8513 | goto error; | |
8514 | } | |
252b5132 RH |
8515 | |
8516 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8517 | } | |
8518 | ||
8519 | free (buf); | |
b34976b6 | 8520 | return TRUE; |
252b5132 | 8521 | } |
98d8431c JB |
8522 | \f |
8523 | /* Providing external access to the ELF program header table. */ | |
8524 | ||
8525 | /* Return an upper bound on the number of bytes required to store a | |
8526 | copy of ABFD's program header table entries. Return -1 if an error | |
8527 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8528 | |
98d8431c | 8529 | long |
217aa764 | 8530 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8531 | { |
8532 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8533 | { | |
8534 | bfd_set_error (bfd_error_wrong_format); | |
8535 | return -1; | |
8536 | } | |
8537 | ||
936e320b | 8538 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8539 | } |
8540 | ||
98d8431c JB |
8541 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8542 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8543 | defined in include/elf/internal.h. To find out how large the | |
8544 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8545 | ||
8546 | Return the number of program header table entries read, or -1 if an | |
8547 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8548 | |
98d8431c | 8549 | int |
217aa764 | 8550 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8551 | { |
8552 | int num_phdrs; | |
8553 | ||
8554 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8555 | { | |
8556 | bfd_set_error (bfd_error_wrong_format); | |
8557 | return -1; | |
8558 | } | |
8559 | ||
8560 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8561 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8562 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8563 | ||
8564 | return num_phdrs; | |
8565 | } | |
ae4221d7 L |
8566 | |
8567 | void | |
217aa764 | 8568 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8569 | { |
d3b05f8d | 8570 | #ifdef BFD64 |
ae4221d7 L |
8571 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8572 | ||
8573 | i_ehdrp = elf_elfheader (abfd); | |
8574 | if (i_ehdrp == NULL) | |
8575 | sprintf_vma (buf, value); | |
8576 | else | |
8577 | { | |
8578 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8579 | { |
ae4221d7 | 8580 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8581 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8582 | #else |
cc55aec9 AM |
8583 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8584 | _bfd_int64_low (value)); | |
ae4221d7 | 8585 | #endif |
cc55aec9 | 8586 | } |
ae4221d7 L |
8587 | else |
8588 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8589 | } | |
d3b05f8d L |
8590 | #else |
8591 | sprintf_vma (buf, value); | |
8592 | #endif | |
ae4221d7 L |
8593 | } |
8594 | ||
8595 | void | |
217aa764 | 8596 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8597 | { |
d3b05f8d | 8598 | #ifdef BFD64 |
ae4221d7 L |
8599 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8600 | ||
8601 | i_ehdrp = elf_elfheader (abfd); | |
8602 | if (i_ehdrp == NULL) | |
8603 | fprintf_vma ((FILE *) stream, value); | |
8604 | else | |
8605 | { | |
8606 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8607 | { |
ae4221d7 | 8608 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8609 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8610 | #else |
cc55aec9 AM |
8611 | fprintf ((FILE *) stream, "%08lx%08lx", |
8612 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8613 | #endif |
cc55aec9 | 8614 | } |
ae4221d7 L |
8615 | else |
8616 | fprintf ((FILE *) stream, "%08lx", | |
8617 | (unsigned long) (value & 0xffffffff)); | |
8618 | } | |
d3b05f8d L |
8619 | #else |
8620 | fprintf_vma ((FILE *) stream, value); | |
8621 | #endif | |
ae4221d7 | 8622 | } |
db6751f2 JJ |
8623 | |
8624 | enum elf_reloc_type_class | |
217aa764 | 8625 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8626 | { |
8627 | return reloc_class_normal; | |
8628 | } | |
f8df10f4 | 8629 | |
47d9a591 | 8630 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8631 | relocation against a local symbol. */ |
8632 | ||
8633 | bfd_vma | |
217aa764 AM |
8634 | _bfd_elf_rela_local_sym (bfd *abfd, |
8635 | Elf_Internal_Sym *sym, | |
8517fae7 | 8636 | asection **psec, |
217aa764 | 8637 | Elf_Internal_Rela *rel) |
f8df10f4 | 8638 | { |
8517fae7 | 8639 | asection *sec = *psec; |
f8df10f4 JJ |
8640 | bfd_vma relocation; |
8641 | ||
8642 | relocation = (sec->output_section->vma | |
8643 | + sec->output_offset | |
8644 | + sym->st_value); | |
8645 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8646 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8647 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8648 | { |
f8df10f4 | 8649 | rel->r_addend = |
8517fae7 | 8650 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8651 | elf_section_data (sec)->sec_info, |
753731ee AM |
8652 | sym->st_value + rel->r_addend); |
8653 | if (sec != *psec) | |
8654 | { | |
8655 | /* If we have changed the section, and our original section is | |
8656 | marked with SEC_EXCLUDE, it means that the original | |
8657 | SEC_MERGE section has been completely subsumed in some | |
8658 | other SEC_MERGE section. In this case, we need to leave | |
8659 | some info around for --emit-relocs. */ | |
8660 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8661 | sec->kept_section = *psec; | |
8662 | sec = *psec; | |
8663 | } | |
8517fae7 AM |
8664 | rel->r_addend -= relocation; |
8665 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8666 | } |
8667 | return relocation; | |
8668 | } | |
c629eae0 JJ |
8669 | |
8670 | bfd_vma | |
217aa764 AM |
8671 | _bfd_elf_rel_local_sym (bfd *abfd, |
8672 | Elf_Internal_Sym *sym, | |
8673 | asection **psec, | |
8674 | bfd_vma addend) | |
47d9a591 | 8675 | { |
c629eae0 JJ |
8676 | asection *sec = *psec; |
8677 | ||
68bfbfcc | 8678 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8679 | return sym->st_value + addend; |
8680 | ||
8681 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8682 | elf_section_data (sec)->sec_info, |
753731ee | 8683 | sym->st_value + addend); |
c629eae0 JJ |
8684 | } |
8685 | ||
8686 | bfd_vma | |
217aa764 | 8687 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8688 | struct bfd_link_info *info, |
217aa764 AM |
8689 | asection *sec, |
8690 | bfd_vma offset) | |
c629eae0 | 8691 | { |
68bfbfcc | 8692 | switch (sec->sec_info_type) |
65765700 JJ |
8693 | { |
8694 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8695 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8696 | offset); | |
65765700 | 8697 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8698 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8699 | default: |
8700 | return offset; | |
8701 | } | |
c629eae0 | 8702 | } |
3333a7c3 RM |
8703 | \f |
8704 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8705 | reconstruct an ELF file by reading the segments out of remote memory | |
8706 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8707 | points to. If not null, *LOADBASEP is filled in with the difference | |
8708 | between the VMAs from which the segments were read, and the VMAs the | |
8709 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8710 | ||
8711 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8712 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8713 | should return zero on success or an `errno' code on failure. TEMPL must | |
8714 | be a BFD for an ELF target with the word size and byte order found in | |
8715 | the remote memory. */ | |
8716 | ||
8717 | bfd * | |
217aa764 AM |
8718 | bfd_elf_bfd_from_remote_memory |
8719 | (bfd *templ, | |
8720 | bfd_vma ehdr_vma, | |
8721 | bfd_vma *loadbasep, | |
f075ee0c | 8722 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8723 | { |
8724 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8725 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8726 | } | |
4c45e5c9 JJ |
8727 | \f |
8728 | long | |
c9727e01 AM |
8729 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8730 | long symcount ATTRIBUTE_UNUSED, | |
8731 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8732 | long dynsymcount, |
c9727e01 AM |
8733 | asymbol **dynsyms, |
8734 | asymbol **ret) | |
4c45e5c9 JJ |
8735 | { |
8736 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8737 | asection *relplt; | |
8738 | asymbol *s; | |
8739 | const char *relplt_name; | |
8740 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8741 | arelent *p; | |
8742 | long count, i, n; | |
8743 | size_t size; | |
8744 | Elf_Internal_Shdr *hdr; | |
8745 | char *names; | |
8746 | asection *plt; | |
8747 | ||
8615f3f2 AM |
8748 | *ret = NULL; |
8749 | ||
90e3cdf2 JJ |
8750 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8751 | return 0; | |
8752 | ||
8615f3f2 AM |
8753 | if (dynsymcount <= 0) |
8754 | return 0; | |
8755 | ||
4c45e5c9 JJ |
8756 | if (!bed->plt_sym_val) |
8757 | return 0; | |
8758 | ||
8759 | relplt_name = bed->relplt_name; | |
8760 | if (relplt_name == NULL) | |
8761 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8762 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8763 | if (relplt == NULL) | |
8764 | return 0; | |
8765 | ||
8766 | hdr = &elf_section_data (relplt)->this_hdr; | |
8767 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8768 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8769 | return 0; | |
8770 | ||
8771 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8772 | if (plt == NULL) | |
8773 | return 0; | |
8774 | ||
8775 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8776 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8777 | return -1; |
8778 | ||
eea6121a | 8779 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8780 | size = count * sizeof (asymbol); |
8781 | p = relplt->relocation; | |
8782 | for (i = 0; i < count; i++, s++, p++) | |
8783 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8784 | ||
8785 | s = *ret = bfd_malloc (size); | |
8786 | if (s == NULL) | |
8787 | return -1; | |
8788 | ||
8789 | names = (char *) (s + count); | |
8790 | p = relplt->relocation; | |
8791 | n = 0; | |
8792 | for (i = 0; i < count; i++, s++, p++) | |
8793 | { | |
8794 | size_t len; | |
8795 | bfd_vma addr; | |
8796 | ||
8797 | addr = bed->plt_sym_val (i, plt, p); | |
8798 | if (addr == (bfd_vma) -1) | |
8799 | continue; | |
8800 | ||
8801 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8802 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8803 | we are defining a symbol, ensure one of them is set. */ | |
8804 | if ((s->flags & BSF_LOCAL) == 0) | |
8805 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8806 | s->section = plt; |
8807 | s->value = addr - plt->vma; | |
8808 | s->name = names; | |
8809 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8810 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8811 | names += len; | |
8812 | memcpy (names, "@plt", sizeof ("@plt")); | |
8813 | names += sizeof ("@plt"); | |
8814 | ++n; | |
8815 | } | |
8816 | ||
8817 | return n; | |
8818 | } | |
3d7f7666 | 8819 | |
c15f73f9 | 8820 | struct elf_symbuf_symbol |
3d7f7666 | 8821 | { |
c15f73f9 JJ |
8822 | unsigned long st_name; /* Symbol name, index in string tbl */ |
8823 | unsigned char st_info; /* Type and binding attributes */ | |
8824 | unsigned char st_other; /* Visibilty, and target specific */ | |
8825 | }; | |
3d7f7666 | 8826 | |
c15f73f9 JJ |
8827 | struct elf_symbuf_head |
8828 | { | |
8829 | struct elf_symbuf_symbol *ssym; | |
8830 | bfd_size_type count; | |
8831 | unsigned int st_shndx; | |
8832 | }; | |
3d7f7666 L |
8833 | |
8834 | struct elf_symbol | |
8835 | { | |
c15f73f9 JJ |
8836 | union |
8837 | { | |
8838 | Elf_Internal_Sym *isym; | |
8839 | struct elf_symbuf_symbol *ssym; | |
8840 | } u; | |
3d7f7666 L |
8841 | const char *name; |
8842 | }; | |
8843 | ||
c15f73f9 JJ |
8844 | /* Sort references to symbols by ascending section number. */ |
8845 | ||
8846 | static int | |
8847 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8848 | { | |
8849 | const Elf_Internal_Sym *s1 = *(const Elf_Internal_Sym **) arg1; | |
8850 | const Elf_Internal_Sym *s2 = *(const Elf_Internal_Sym **) arg2; | |
8851 | ||
8852 | return s1->st_shndx - s2->st_shndx; | |
8853 | } | |
8854 | ||
3d7f7666 L |
8855 | static int |
8856 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8857 | { | |
8858 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8859 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8860 | return strcmp (s1->name, s2->name); | |
8861 | } | |
8862 | ||
c15f73f9 JJ |
8863 | static struct elf_symbuf_head * |
8864 | elf_create_symbuf (bfd_size_type symcount, Elf_Internal_Sym *isymbuf) | |
8865 | { | |
8866 | Elf_Internal_Sym **ind, **indbufend, **indbuf | |
8867 | = bfd_malloc2 (symcount, sizeof (*indbuf)); | |
8868 | struct elf_symbuf_symbol *ssym; | |
8869 | struct elf_symbuf_head *ssymbuf, *ssymhead; | |
8870 | bfd_size_type i, shndx_count; | |
8871 | ||
8872 | if (indbuf == NULL) | |
8873 | return NULL; | |
8874 | ||
8875 | for (ind = indbuf, i = 0; i < symcount; i++) | |
8876 | if (isymbuf[i].st_shndx != SHN_UNDEF) | |
8877 | *ind++ = &isymbuf[i]; | |
8878 | indbufend = ind; | |
8879 | ||
8880 | qsort (indbuf, indbufend - indbuf, sizeof (Elf_Internal_Sym *), | |
8881 | elf_sort_elf_symbol); | |
8882 | ||
8883 | shndx_count = 0; | |
8884 | if (indbufend > indbuf) | |
8885 | for (ind = indbuf, shndx_count++; ind < indbufend - 1; ind++) | |
8886 | if (ind[0]->st_shndx != ind[1]->st_shndx) | |
8887 | shndx_count++; | |
8888 | ||
8889 | ssymbuf = bfd_malloc ((shndx_count + 1) * sizeof (*ssymbuf) | |
8890 | + (indbufend - indbuf) * sizeof (*ssymbuf)); | |
8891 | if (ssymbuf == NULL) | |
8892 | { | |
8893 | free (indbuf); | |
8894 | return NULL; | |
8895 | } | |
8896 | ||
8897 | ssym = (struct elf_symbuf_symbol *) (ssymbuf + shndx_count); | |
8898 | ssymbuf->ssym = NULL; | |
8899 | ssymbuf->count = shndx_count; | |
8900 | ssymbuf->st_shndx = 0; | |
8901 | for (ssymhead = ssymbuf, ind = indbuf; ind < indbufend; ssym++, ind++) | |
8902 | { | |
8903 | if (ind == indbuf || ssymhead->st_shndx != (*ind)->st_shndx) | |
8904 | { | |
8905 | ssymhead++; | |
8906 | ssymhead->ssym = ssym; | |
8907 | ssymhead->count = 0; | |
8908 | ssymhead->st_shndx = (*ind)->st_shndx; | |
8909 | } | |
8910 | ssym->st_name = (*ind)->st_name; | |
8911 | ssym->st_info = (*ind)->st_info; | |
8912 | ssym->st_other = (*ind)->st_other; | |
8913 | ssymhead->count++; | |
8914 | } | |
8915 | BFD_ASSERT ((bfd_size_type) (ssymhead - ssymbuf) == shndx_count); | |
8916 | ||
8917 | free (indbuf); | |
8918 | return ssymbuf; | |
8919 | } | |
8920 | ||
3d7f7666 L |
8921 | /* Check if 2 sections define the same set of local and global |
8922 | symbols. */ | |
8923 | ||
8924 | bfd_boolean | |
c0f00686 L |
8925 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2, |
8926 | struct bfd_link_info *info) | |
3d7f7666 L |
8927 | { |
8928 | bfd *bfd1, *bfd2; | |
8929 | const struct elf_backend_data *bed1, *bed2; | |
8930 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8931 | bfd_size_type symcount1, symcount2; | |
8932 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
c15f73f9 JJ |
8933 | struct elf_symbuf_head *ssymbuf1, *ssymbuf2; |
8934 | Elf_Internal_Sym *isym, *isymend; | |
8935 | struct elf_symbol *symtable1 = NULL, *symtable2 = NULL; | |
3d7f7666 L |
8936 | bfd_size_type count1, count2, i; |
8937 | int shndx1, shndx2; | |
8938 | bfd_boolean result; | |
8939 | ||
8940 | bfd1 = sec1->owner; | |
8941 | bfd2 = sec2->owner; | |
8942 | ||
8943 | /* If both are .gnu.linkonce sections, they have to have the same | |
8944 | section name. */ | |
0112cd26 NC |
8945 | if (CONST_STRNEQ (sec1->name, ".gnu.linkonce") |
8946 | && CONST_STRNEQ (sec2->name, ".gnu.linkonce")) | |
3d7f7666 L |
8947 | return strcmp (sec1->name + sizeof ".gnu.linkonce", |
8948 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8949 | ||
8950 | /* Both sections have to be in ELF. */ | |
8951 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8952 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8953 | return FALSE; | |
8954 | ||
8955 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8956 | return FALSE; | |
8957 | ||
8958 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8959 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8960 | { | |
8961 | /* If both are members of section groups, they have to have the | |
8962 | same group name. */ | |
8963 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8964 | return FALSE; | |
8965 | } | |
8966 | ||
8967 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8968 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8969 | if (shndx1 == -1 || shndx2 == -1) | |
8970 | return FALSE; | |
8971 | ||
8972 | bed1 = get_elf_backend_data (bfd1); | |
8973 | bed2 = get_elf_backend_data (bfd2); | |
8974 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8975 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8976 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8977 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8978 | ||
8979 | if (symcount1 == 0 || symcount2 == 0) | |
8980 | return FALSE; | |
8981 | ||
3d7f7666 | 8982 | result = FALSE; |
c15f73f9 JJ |
8983 | isymbuf1 = NULL; |
8984 | isymbuf2 = NULL; | |
8985 | ssymbuf1 = elf_tdata (bfd1)->symbuf; | |
8986 | ssymbuf2 = elf_tdata (bfd2)->symbuf; | |
3d7f7666 | 8987 | |
c15f73f9 | 8988 | if (ssymbuf1 == NULL) |
c0f00686 L |
8989 | { |
8990 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8991 | NULL, NULL, NULL); | |
8992 | if (isymbuf1 == NULL) | |
8993 | goto done; | |
c15f73f9 | 8994 | |
c0f00686 | 8995 | if (!info->reduce_memory_overheads) |
c15f73f9 JJ |
8996 | elf_tdata (bfd1)->symbuf = ssymbuf1 |
8997 | = elf_create_symbuf (symcount1, isymbuf1); | |
c0f00686 L |
8998 | } |
8999 | ||
c15f73f9 | 9000 | if (ssymbuf1 == NULL || ssymbuf2 == NULL) |
c0f00686 L |
9001 | { |
9002 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
9003 | NULL, NULL, NULL); | |
9004 | if (isymbuf2 == NULL) | |
9005 | goto done; | |
c15f73f9 JJ |
9006 | |
9007 | if (ssymbuf1 != NULL && !info->reduce_memory_overheads) | |
9008 | elf_tdata (bfd2)->symbuf = ssymbuf2 | |
9009 | = elf_create_symbuf (symcount2, isymbuf2); | |
c0f00686 | 9010 | } |
3d7f7666 | 9011 | |
c15f73f9 | 9012 | if (ssymbuf1 != NULL && ssymbuf2 != NULL) |
3d7f7666 | 9013 | { |
c15f73f9 JJ |
9014 | /* Optimized faster version. */ |
9015 | bfd_size_type lo, hi, mid; | |
9016 | struct elf_symbol *symp; | |
9017 | struct elf_symbuf_symbol *ssym, *ssymend; | |
9018 | ||
9019 | lo = 0; | |
9020 | hi = ssymbuf1->count; | |
9021 | ssymbuf1++; | |
9022 | count1 = 0; | |
9023 | while (lo < hi) | |
3d7f7666 | 9024 | { |
c15f73f9 JJ |
9025 | mid = (lo + hi) / 2; |
9026 | if ((unsigned int) shndx1 < ssymbuf1[mid].st_shndx) | |
9027 | hi = mid; | |
9028 | else if ((unsigned int) shndx1 > ssymbuf1[mid].st_shndx) | |
9029 | lo = mid + 1; | |
9030 | else | |
9031 | { | |
9032 | count1 = ssymbuf1[mid].count; | |
9033 | ssymbuf1 += mid; | |
9034 | break; | |
9035 | } | |
3d7f7666 L |
9036 | } |
9037 | ||
c15f73f9 JJ |
9038 | lo = 0; |
9039 | hi = ssymbuf2->count; | |
9040 | ssymbuf2++; | |
9041 | count2 = 0; | |
9042 | while (lo < hi) | |
9043 | { | |
9044 | mid = (lo + hi) / 2; | |
9045 | if ((unsigned int) shndx2 < ssymbuf2[mid].st_shndx) | |
9046 | hi = mid; | |
9047 | else if ((unsigned int) shndx2 > ssymbuf2[mid].st_shndx) | |
9048 | lo = mid + 1; | |
9049 | else | |
9050 | { | |
9051 | count2 = ssymbuf2[mid].count; | |
9052 | ssymbuf2 += mid; | |
9053 | break; | |
9054 | } | |
9055 | } | |
3d7f7666 | 9056 | |
c15f73f9 JJ |
9057 | if (count1 == 0 || count2 == 0 || count1 != count2) |
9058 | goto done; | |
9059 | ||
9060 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
9061 | symtable2 = bfd_malloc (count2 * sizeof (struct elf_symbol)); | |
9062 | if (symtable1 == NULL || symtable2 == NULL) | |
9063 | goto done; | |
9064 | ||
9065 | symp = symtable1; | |
9066 | for (ssym = ssymbuf1->ssym, ssymend = ssym + count1; | |
9067 | ssym < ssymend; ssym++, symp++) | |
3d7f7666 | 9068 | { |
c15f73f9 JJ |
9069 | symp->u.ssym = ssym; |
9070 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
9071 | hdr1->sh_link, | |
9072 | ssym->st_name); | |
3d7f7666 L |
9073 | } |
9074 | ||
c15f73f9 JJ |
9075 | symp = symtable2; |
9076 | for (ssym = ssymbuf2->ssym, ssymend = ssym + count2; | |
9077 | ssym < ssymend; ssym++, symp++) | |
9078 | { | |
9079 | symp->u.ssym = ssym; | |
9080 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
9081 | hdr2->sh_link, | |
9082 | ssym->st_name); | |
9083 | } | |
9084 | ||
9085 | /* Sort symbol by name. */ | |
9086 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
9087 | elf_sym_name_compare); | |
9088 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
9089 | elf_sym_name_compare); | |
9090 | ||
9091 | for (i = 0; i < count1; i++) | |
9092 | /* Two symbols must have the same binding, type and name. */ | |
9093 | if (symtable1 [i].u.ssym->st_info != symtable2 [i].u.ssym->st_info | |
9094 | || symtable1 [i].u.ssym->st_other != symtable2 [i].u.ssym->st_other | |
9095 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
9096 | goto done; | |
9097 | ||
9098 | result = TRUE; | |
9099 | goto done; | |
3d7f7666 L |
9100 | } |
9101 | ||
c15f73f9 JJ |
9102 | symtable1 = bfd_malloc (symcount1 * sizeof (struct elf_symbol)); |
9103 | symtable2 = bfd_malloc (symcount2 * sizeof (struct elf_symbol)); | |
9104 | if (symtable1 == NULL || symtable2 == NULL) | |
3d7f7666 L |
9105 | goto done; |
9106 | ||
c15f73f9 JJ |
9107 | /* Count definitions in the section. */ |
9108 | count1 = 0; | |
9109 | for (isym = isymbuf1, isymend = isym + symcount1; isym < isymend; isym++) | |
9110 | if (isym->st_shndx == (unsigned int) shndx1) | |
9111 | symtable1[count1++].u.isym = isym; | |
3d7f7666 | 9112 | |
c15f73f9 JJ |
9113 | count2 = 0; |
9114 | for (isym = isymbuf2, isymend = isym + symcount2; isym < isymend; isym++) | |
9115 | if (isym->st_shndx == (unsigned int) shndx2) | |
9116 | symtable2[count2++].u.isym = isym; | |
9117 | ||
9118 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
3d7f7666 L |
9119 | goto done; |
9120 | ||
c15f73f9 JJ |
9121 | for (i = 0; i < count1; i++) |
9122 | symtable1[i].name | |
9123 | = bfd_elf_string_from_elf_section (bfd1, hdr1->sh_link, | |
9124 | symtable1[i].u.isym->st_name); | |
9125 | ||
9126 | for (i = 0; i < count2; i++) | |
9127 | symtable2[i].name | |
9128 | = bfd_elf_string_from_elf_section (bfd2, hdr2->sh_link, | |
9129 | symtable2[i].u.isym->st_name); | |
9130 | ||
3d7f7666 L |
9131 | /* Sort symbol by name. */ |
9132 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
9133 | elf_sym_name_compare); | |
9134 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
9135 | elf_sym_name_compare); | |
9136 | ||
9137 | for (i = 0; i < count1; i++) | |
9138 | /* Two symbols must have the same binding, type and name. */ | |
c15f73f9 JJ |
9139 | if (symtable1 [i].u.isym->st_info != symtable2 [i].u.isym->st_info |
9140 | || symtable1 [i].u.isym->st_other != symtable2 [i].u.isym->st_other | |
3d7f7666 L |
9141 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) |
9142 | goto done; | |
9143 | ||
9144 | result = TRUE; | |
9145 | ||
9146 | done: | |
9147 | if (symtable1) | |
9148 | free (symtable1); | |
9149 | if (symtable2) | |
9150 | free (symtable2); | |
c15f73f9 JJ |
9151 | if (isymbuf1) |
9152 | free (isymbuf1); | |
9153 | if (isymbuf2) | |
9154 | free (isymbuf2); | |
3d7f7666 L |
9155 | |
9156 | return result; | |
9157 | } | |
3b22753a L |
9158 | |
9159 | /* It is only used by x86-64 so far. */ | |
9160 | asection _bfd_elf_large_com_section | |
9161 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 9162 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 L |
9163 | |
9164 | /* Return TRUE if 2 section types are compatible. */ | |
9165 | ||
9166 | bfd_boolean | |
9167 | _bfd_elf_match_sections_by_type (bfd *abfd, const asection *asec, | |
9168 | bfd *bbfd, const asection *bsec) | |
9169 | { | |
9170 | if (asec == NULL | |
9171 | || bsec == NULL | |
9172 | || abfd->xvec->flavour != bfd_target_elf_flavour | |
9173 | || bbfd->xvec->flavour != bfd_target_elf_flavour) | |
9174 | return TRUE; | |
9175 | ||
9176 | return elf_section_type (asec) == elf_section_type (bsec); | |
9177 | } | |
d1036acb L |
9178 | |
9179 | void | |
9180 | _bfd_elf_set_osabi (bfd * abfd, | |
9181 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
9182 | { | |
9183 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
9184 | ||
9185 | i_ehdrp = elf_elfheader (abfd); | |
9186 | ||
9187 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
9188 | } | |
fcb93ecf PB |
9189 | |
9190 | ||
9191 | /* Return TRUE for ELF symbol types that represent functions. | |
9192 | This is the default version of this function, which is sufficient for | |
9193 | most targets. It returns true if TYPE is STT_FUNC. */ | |
9194 | ||
9195 | bfd_boolean | |
9196 | _bfd_elf_is_function_type (unsigned int type) | |
9197 | { | |
9198 | return (type == STT_FUNC); | |
9199 | } |