Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
fad2f28d | 4 | 2002, 2003, 2004, 2005, 2006 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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
1b74d094 BW |
22 | /* |
23 | SECTION | |
252b5132 RH |
24 | ELF backends |
25 | ||
26 | BFD support for ELF formats is being worked on. | |
27 | Currently, the best supported back ends are for sparc and i386 | |
28 | (running svr4 or Solaris 2). | |
29 | ||
30 | Documentation of the internals of the support code still needs | |
31 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 32 | haven't bothered yet. */ |
252b5132 | 33 | |
7ee38065 MS |
34 | /* For sparc64-cross-sparc32. */ |
35 | #define _SYSCALL32 | |
252b5132 RH |
36 | #include "bfd.h" |
37 | #include "sysdep.h" | |
38 | #include "bfdlink.h" | |
39 | #include "libbfd.h" | |
40 | #define ARCH_SIZE 0 | |
41 | #include "elf-bfd.h" | |
e0e8c97f | 42 | #include "libiberty.h" |
252b5132 | 43 | |
217aa764 | 44 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 45 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
46 | static bfd_boolean prep_headers (bfd *); |
47 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
48 | static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ; | |
50b2bdb7 | 49 | |
252b5132 RH |
50 | /* Swap version information in and out. The version information is |
51 | currently size independent. If that ever changes, this code will | |
52 | need to move into elfcode.h. */ | |
53 | ||
54 | /* Swap in a Verdef structure. */ | |
55 | ||
56 | void | |
217aa764 AM |
57 | _bfd_elf_swap_verdef_in (bfd *abfd, |
58 | const Elf_External_Verdef *src, | |
59 | Elf_Internal_Verdef *dst) | |
252b5132 | 60 | { |
dc810e39 AM |
61 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
62 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
63 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
64 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
65 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
66 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
67 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
68 | } |
69 | ||
70 | /* Swap out a Verdef structure. */ | |
71 | ||
72 | void | |
217aa764 AM |
73 | _bfd_elf_swap_verdef_out (bfd *abfd, |
74 | const Elf_Internal_Verdef *src, | |
75 | Elf_External_Verdef *dst) | |
252b5132 | 76 | { |
dc810e39 AM |
77 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
78 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
79 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
80 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
81 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
82 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
83 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
84 | } |
85 | ||
86 | /* Swap in a Verdaux structure. */ | |
87 | ||
88 | void | |
217aa764 AM |
89 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
90 | const Elf_External_Verdaux *src, | |
91 | Elf_Internal_Verdaux *dst) | |
252b5132 | 92 | { |
dc810e39 AM |
93 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
94 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
95 | } |
96 | ||
97 | /* Swap out a Verdaux structure. */ | |
98 | ||
99 | void | |
217aa764 AM |
100 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
101 | const Elf_Internal_Verdaux *src, | |
102 | Elf_External_Verdaux *dst) | |
252b5132 | 103 | { |
dc810e39 AM |
104 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
105 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
106 | } |
107 | ||
108 | /* Swap in a Verneed structure. */ | |
109 | ||
110 | void | |
217aa764 AM |
111 | _bfd_elf_swap_verneed_in (bfd *abfd, |
112 | const Elf_External_Verneed *src, | |
113 | Elf_Internal_Verneed *dst) | |
252b5132 | 114 | { |
dc810e39 AM |
115 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
116 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
117 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
118 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
119 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
120 | } |
121 | ||
122 | /* Swap out a Verneed structure. */ | |
123 | ||
124 | void | |
217aa764 AM |
125 | _bfd_elf_swap_verneed_out (bfd *abfd, |
126 | const Elf_Internal_Verneed *src, | |
127 | Elf_External_Verneed *dst) | |
252b5132 | 128 | { |
dc810e39 AM |
129 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
130 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
131 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
132 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
133 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
134 | } |
135 | ||
136 | /* Swap in a Vernaux structure. */ | |
137 | ||
138 | void | |
217aa764 AM |
139 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
140 | const Elf_External_Vernaux *src, | |
141 | Elf_Internal_Vernaux *dst) | |
252b5132 | 142 | { |
dc810e39 AM |
143 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
144 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
145 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
146 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
147 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
148 | } |
149 | ||
150 | /* Swap out a Vernaux structure. */ | |
151 | ||
152 | void | |
217aa764 AM |
153 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
154 | const Elf_Internal_Vernaux *src, | |
155 | Elf_External_Vernaux *dst) | |
252b5132 | 156 | { |
dc810e39 AM |
157 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
158 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
159 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
160 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
161 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
162 | } |
163 | ||
164 | /* Swap in a Versym structure. */ | |
165 | ||
166 | void | |
217aa764 AM |
167 | _bfd_elf_swap_versym_in (bfd *abfd, |
168 | const Elf_External_Versym *src, | |
169 | Elf_Internal_Versym *dst) | |
252b5132 | 170 | { |
dc810e39 | 171 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
172 | } |
173 | ||
174 | /* Swap out a Versym structure. */ | |
175 | ||
176 | void | |
217aa764 AM |
177 | _bfd_elf_swap_versym_out (bfd *abfd, |
178 | const Elf_Internal_Versym *src, | |
179 | Elf_External_Versym *dst) | |
252b5132 | 180 | { |
dc810e39 | 181 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
182 | } |
183 | ||
184 | /* Standard ELF hash function. Do not change this function; you will | |
185 | cause invalid hash tables to be generated. */ | |
3a99b017 | 186 | |
252b5132 | 187 | unsigned long |
217aa764 | 188 | bfd_elf_hash (const char *namearg) |
252b5132 | 189 | { |
3a99b017 | 190 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
191 | unsigned long h = 0; |
192 | unsigned long g; | |
193 | int ch; | |
194 | ||
195 | while ((ch = *name++) != '\0') | |
196 | { | |
197 | h = (h << 4) + ch; | |
198 | if ((g = (h & 0xf0000000)) != 0) | |
199 | { | |
200 | h ^= g >> 24; | |
201 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
202 | this case and on some machines one insn instead of two. */ | |
203 | h ^= g; | |
204 | } | |
205 | } | |
32dfa85d | 206 | return h & 0xffffffff; |
252b5132 RH |
207 | } |
208 | ||
fdc90cb4 JJ |
209 | /* DT_GNU_HASH hash function. Do not change this function; you will |
210 | cause invalid hash tables to be generated. */ | |
211 | ||
212 | unsigned long | |
213 | bfd_elf_gnu_hash (const char *namearg) | |
214 | { | |
215 | const unsigned char *name = (const unsigned char *) namearg; | |
216 | unsigned long h = 5381; | |
217 | unsigned char ch; | |
218 | ||
219 | while ((ch = *name++) != '\0') | |
220 | h = (h << 5) + h + ch; | |
221 | return h & 0xffffffff; | |
222 | } | |
223 | ||
b34976b6 | 224 | bfd_boolean |
217aa764 | 225 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 226 | { |
62d7a5f6 AM |
227 | if (abfd->tdata.any == NULL) |
228 | { | |
229 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); | |
230 | if (abfd->tdata.any == NULL) | |
231 | return FALSE; | |
232 | } | |
233 | ||
234 | elf_tdata (abfd)->program_header_size = (bfd_size_type) -1; | |
252b5132 | 235 | |
b34976b6 | 236 | return TRUE; |
252b5132 RH |
237 | } |
238 | ||
b34976b6 | 239 | bfd_boolean |
217aa764 | 240 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 241 | { |
c044fabd | 242 | /* I think this can be done just like an object file. */ |
252b5132 RH |
243 | return bfd_elf_mkobject (abfd); |
244 | } | |
245 | ||
246 | char * | |
217aa764 | 247 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
248 | { |
249 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 250 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
251 | file_ptr offset; |
252 | bfd_size_type shstrtabsize; | |
252b5132 RH |
253 | |
254 | i_shdrp = elf_elfsections (abfd); | |
255 | if (i_shdrp == 0 || i_shdrp[shindex] == 0) | |
f075ee0c | 256 | return NULL; |
252b5132 | 257 | |
f075ee0c | 258 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
259 | if (shstrtab == NULL) |
260 | { | |
c044fabd | 261 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
262 | offset = i_shdrp[shindex]->sh_offset; |
263 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
264 | |
265 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
266 | in case the string table is not terminated. */ | |
267 | if (shstrtabsize + 1 == 0 | |
268 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
269 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
270 | shstrtab = NULL; | |
271 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
272 | { | |
273 | if (bfd_get_error () != bfd_error_system_call) | |
274 | bfd_set_error (bfd_error_file_truncated); | |
275 | shstrtab = NULL; | |
276 | } | |
277 | else | |
278 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 279 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 280 | } |
f075ee0c | 281 | return (char *) shstrtab; |
252b5132 RH |
282 | } |
283 | ||
284 | char * | |
217aa764 AM |
285 | bfd_elf_string_from_elf_section (bfd *abfd, |
286 | unsigned int shindex, | |
287 | unsigned int strindex) | |
252b5132 RH |
288 | { |
289 | Elf_Internal_Shdr *hdr; | |
290 | ||
291 | if (strindex == 0) | |
292 | return ""; | |
293 | ||
294 | hdr = elf_elfsections (abfd)[shindex]; | |
295 | ||
296 | if (hdr->contents == NULL | |
297 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
298 | return NULL; | |
299 | ||
300 | if (strindex >= hdr->sh_size) | |
301 | { | |
1b3a8575 | 302 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 303 | (*_bfd_error_handler) |
d003868e AM |
304 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
305 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 306 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 307 | ? ".shstrtab" |
1b3a8575 | 308 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
309 | return ""; |
310 | } | |
311 | ||
312 | return ((char *) hdr->contents) + strindex; | |
313 | } | |
314 | ||
6cdc0ccc AM |
315 | /* Read and convert symbols to internal format. |
316 | SYMCOUNT specifies the number of symbols to read, starting from | |
317 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
318 | are non-NULL, they are used to store the internal symbols, external | |
319 | symbols, and symbol section index extensions, respectively. */ | |
320 | ||
321 | Elf_Internal_Sym * | |
217aa764 AM |
322 | bfd_elf_get_elf_syms (bfd *ibfd, |
323 | Elf_Internal_Shdr *symtab_hdr, | |
324 | size_t symcount, | |
325 | size_t symoffset, | |
326 | Elf_Internal_Sym *intsym_buf, | |
327 | void *extsym_buf, | |
328 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
329 | { |
330 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 331 | void *alloc_ext; |
df622259 | 332 | const bfd_byte *esym; |
6cdc0ccc AM |
333 | Elf_External_Sym_Shndx *alloc_extshndx; |
334 | Elf_External_Sym_Shndx *shndx; | |
335 | Elf_Internal_Sym *isym; | |
336 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 337 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
338 | size_t extsym_size; |
339 | bfd_size_type amt; | |
340 | file_ptr pos; | |
341 | ||
342 | if (symcount == 0) | |
343 | return intsym_buf; | |
344 | ||
345 | /* Normal syms might have section extension entries. */ | |
346 | shndx_hdr = NULL; | |
347 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
348 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
349 | ||
350 | /* Read the symbols. */ | |
351 | alloc_ext = NULL; | |
352 | alloc_extshndx = NULL; | |
353 | bed = get_elf_backend_data (ibfd); | |
354 | extsym_size = bed->s->sizeof_sym; | |
355 | amt = symcount * extsym_size; | |
356 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
357 | if (extsym_buf == NULL) | |
358 | { | |
d0fb9a8d | 359 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
360 | extsym_buf = alloc_ext; |
361 | } | |
362 | if (extsym_buf == NULL | |
363 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
364 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
365 | { | |
366 | intsym_buf = NULL; | |
367 | goto out; | |
368 | } | |
369 | ||
370 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
371 | extshndx_buf = NULL; | |
372 | else | |
373 | { | |
374 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
375 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
376 | if (extshndx_buf == NULL) | |
377 | { | |
d0fb9a8d JJ |
378 | alloc_extshndx = bfd_malloc2 (symcount, |
379 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
380 | extshndx_buf = alloc_extshndx; |
381 | } | |
382 | if (extshndx_buf == NULL | |
383 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
384 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
385 | { | |
386 | intsym_buf = NULL; | |
387 | goto out; | |
388 | } | |
389 | } | |
390 | ||
391 | if (intsym_buf == NULL) | |
392 | { | |
d0fb9a8d | 393 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
394 | if (intsym_buf == NULL) |
395 | goto out; | |
396 | } | |
397 | ||
398 | /* Convert the symbols to internal form. */ | |
399 | isymend = intsym_buf + symcount; | |
400 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
401 | isym < isymend; | |
402 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
403 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
404 | { | |
405 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
406 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
407 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
408 | ibfd, (unsigned long) symoffset); | |
409 | intsym_buf = NULL; | |
410 | goto out; | |
411 | } | |
6cdc0ccc AM |
412 | |
413 | out: | |
414 | if (alloc_ext != NULL) | |
415 | free (alloc_ext); | |
416 | if (alloc_extshndx != NULL) | |
417 | free (alloc_extshndx); | |
418 | ||
419 | return intsym_buf; | |
420 | } | |
421 | ||
5cab59f6 AM |
422 | /* Look up a symbol name. */ |
423 | const char * | |
be8dd2ca AM |
424 | bfd_elf_sym_name (bfd *abfd, |
425 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
426 | Elf_Internal_Sym *isym, |
427 | asection *sym_sec) | |
5cab59f6 | 428 | { |
26c61ae5 | 429 | const char *name; |
5cab59f6 | 430 | unsigned int iname = isym->st_name; |
be8dd2ca | 431 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 432 | |
138f35cc JJ |
433 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
434 | /* Check for a bogus st_shndx to avoid crashing. */ | |
435 | && isym->st_shndx < elf_numsections (abfd) | |
436 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
437 | { |
438 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
439 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
440 | } | |
441 | ||
26c61ae5 L |
442 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
443 | if (name == NULL) | |
444 | name = "(null)"; | |
445 | else if (sym_sec && *name == '\0') | |
446 | name = bfd_section_name (abfd, sym_sec); | |
447 | ||
448 | return name; | |
5cab59f6 AM |
449 | } |
450 | ||
dbb410c3 AM |
451 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
452 | sections. The first element is the flags, the rest are section | |
453 | pointers. */ | |
454 | ||
455 | typedef union elf_internal_group { | |
456 | Elf_Internal_Shdr *shdr; | |
457 | unsigned int flags; | |
458 | } Elf_Internal_Group; | |
459 | ||
b885599b AM |
460 | /* Return the name of the group signature symbol. Why isn't the |
461 | signature just a string? */ | |
462 | ||
463 | static const char * | |
217aa764 | 464 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 465 | { |
9dce4196 | 466 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
467 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
468 | Elf_External_Sym_Shndx eshndx; | |
469 | Elf_Internal_Sym isym; | |
b885599b | 470 | |
13792e9d L |
471 | /* First we need to ensure the symbol table is available. Make sure |
472 | that it is a symbol table section. */ | |
473 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
474 | if (hdr->sh_type != SHT_SYMTAB | |
475 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
476 | return NULL; |
477 | ||
9dce4196 AM |
478 | /* Go read the symbol. */ |
479 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
480 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
481 | &isym, esym, &eshndx) == NULL) | |
b885599b | 482 | return NULL; |
9dce4196 | 483 | |
26c61ae5 | 484 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
485 | } |
486 | ||
dbb410c3 AM |
487 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
488 | ||
b34976b6 | 489 | static bfd_boolean |
217aa764 | 490 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
491 | { |
492 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
493 | ||
494 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
495 | is set to -1 if there are no SHT_GROUP sections. */ | |
496 | if (num_group == 0) | |
497 | { | |
498 | unsigned int i, shnum; | |
499 | ||
500 | /* First count the number of groups. If we have a SHT_GROUP | |
501 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 502 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
503 | num_group = 0; |
504 | for (i = 0; i < shnum; i++) | |
505 | { | |
506 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
507 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
508 | num_group += 1; | |
509 | } | |
510 | ||
511 | if (num_group == 0) | |
20dbb49d L |
512 | { |
513 | num_group = (unsigned) -1; | |
514 | elf_tdata (abfd)->num_group = num_group; | |
515 | } | |
516 | else | |
dbb410c3 AM |
517 | { |
518 | /* We keep a list of elf section headers for group sections, | |
519 | so we can find them quickly. */ | |
20dbb49d | 520 | bfd_size_type amt; |
d0fb9a8d | 521 | |
20dbb49d | 522 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
523 | elf_tdata (abfd)->group_sect_ptr |
524 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 525 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 526 | return FALSE; |
dbb410c3 AM |
527 | |
528 | num_group = 0; | |
529 | for (i = 0; i < shnum; i++) | |
530 | { | |
531 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
532 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
533 | { | |
973ffd63 | 534 | unsigned char *src; |
dbb410c3 AM |
535 | Elf_Internal_Group *dest; |
536 | ||
537 | /* Add to list of sections. */ | |
538 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
539 | num_group += 1; | |
540 | ||
541 | /* Read the raw contents. */ | |
542 | BFD_ASSERT (sizeof (*dest) >= 4); | |
543 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
544 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
545 | sizeof (*dest) / 4); | |
dbb410c3 AM |
546 | if (shdr->contents == NULL |
547 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
548 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
549 | != shdr->sh_size)) | |
b34976b6 | 550 | return FALSE; |
dbb410c3 AM |
551 | |
552 | /* Translate raw contents, a flag word followed by an | |
553 | array of elf section indices all in target byte order, | |
554 | to the flag word followed by an array of elf section | |
555 | pointers. */ | |
556 | src = shdr->contents + shdr->sh_size; | |
557 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
558 | while (1) | |
559 | { | |
560 | unsigned int idx; | |
561 | ||
562 | src -= 4; | |
563 | --dest; | |
564 | idx = H_GET_32 (abfd, src); | |
565 | if (src == shdr->contents) | |
566 | { | |
567 | dest->flags = idx; | |
b885599b AM |
568 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
569 | shdr->bfd_section->flags | |
570 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
571 | break; |
572 | } | |
573 | if (idx >= shnum) | |
574 | { | |
575 | ((*_bfd_error_handler) | |
d003868e | 576 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
577 | idx = 0; |
578 | } | |
579 | dest->shdr = elf_elfsections (abfd)[idx]; | |
580 | } | |
581 | } | |
582 | } | |
583 | } | |
584 | } | |
585 | ||
586 | if (num_group != (unsigned) -1) | |
587 | { | |
588 | unsigned int i; | |
589 | ||
590 | for (i = 0; i < num_group; i++) | |
591 | { | |
592 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
593 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
594 | unsigned int n_elt = shdr->sh_size / 4; | |
595 | ||
596 | /* Look through this group's sections to see if current | |
597 | section is a member. */ | |
598 | while (--n_elt != 0) | |
599 | if ((++idx)->shdr == hdr) | |
600 | { | |
e0e8c97f | 601 | asection *s = NULL; |
dbb410c3 AM |
602 | |
603 | /* We are a member of this group. Go looking through | |
604 | other members to see if any others are linked via | |
605 | next_in_group. */ | |
606 | idx = (Elf_Internal_Group *) shdr->contents; | |
607 | n_elt = shdr->sh_size / 4; | |
608 | while (--n_elt != 0) | |
609 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 610 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
611 | break; |
612 | if (n_elt != 0) | |
613 | { | |
dbb410c3 AM |
614 | /* Snarf the group name from other member, and |
615 | insert current section in circular list. */ | |
945906ff AM |
616 | elf_group_name (newsect) = elf_group_name (s); |
617 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
618 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
619 | } |
620 | else | |
621 | { | |
dbb410c3 AM |
622 | const char *gname; |
623 | ||
b885599b AM |
624 | gname = group_signature (abfd, shdr); |
625 | if (gname == NULL) | |
b34976b6 | 626 | return FALSE; |
945906ff | 627 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
628 | |
629 | /* Start a circular list with one element. */ | |
945906ff | 630 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 631 | } |
b885599b | 632 | |
9dce4196 AM |
633 | /* If the group section has been created, point to the |
634 | new member. */ | |
dbb410c3 | 635 | if (shdr->bfd_section != NULL) |
945906ff | 636 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 637 | |
dbb410c3 AM |
638 | i = num_group - 1; |
639 | break; | |
640 | } | |
641 | } | |
642 | } | |
643 | ||
945906ff | 644 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 645 | { |
d003868e AM |
646 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
647 | abfd, newsect); | |
dbb410c3 | 648 | } |
b34976b6 | 649 | return TRUE; |
dbb410c3 AM |
650 | } |
651 | ||
3d7f7666 | 652 | bfd_boolean |
dd863624 | 653 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
654 | { |
655 | unsigned int i; | |
656 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
657 | bfd_boolean result = TRUE; | |
dd863624 L |
658 | asection *s; |
659 | ||
660 | /* Process SHF_LINK_ORDER. */ | |
661 | for (s = abfd->sections; s != NULL; s = s->next) | |
662 | { | |
663 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
664 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
665 | { | |
666 | unsigned int elfsec = this_hdr->sh_link; | |
667 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
668 | not set the sh_link or sh_info fields. Hence we could | |
669 | get the situation where elfsec is 0. */ | |
670 | if (elfsec == 0) | |
671 | { | |
672 | const struct elf_backend_data *bed | |
673 | = get_elf_backend_data (abfd); | |
674 | if (bed->link_order_error_handler) | |
675 | bed->link_order_error_handler | |
676 | (_("%B: warning: sh_link not set for section `%A'"), | |
677 | abfd, s); | |
678 | } | |
679 | else | |
680 | { | |
25bbc984 L |
681 | asection *link; |
682 | ||
dd863624 | 683 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
684 | |
685 | /* PR 1991, 2008: | |
686 | Some strip/objcopy may leave an incorrect value in | |
687 | sh_link. We don't want to proceed. */ | |
688 | link = this_hdr->bfd_section; | |
689 | if (link == NULL) | |
690 | { | |
691 | (*_bfd_error_handler) | |
692 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
693 | s->owner, s, elfsec); | |
694 | result = FALSE; | |
695 | } | |
696 | ||
697 | elf_linked_to_section (s) = link; | |
dd863624 L |
698 | } |
699 | } | |
700 | } | |
3d7f7666 | 701 | |
dd863624 | 702 | /* Process section groups. */ |
3d7f7666 L |
703 | if (num_group == (unsigned) -1) |
704 | return result; | |
705 | ||
706 | for (i = 0; i < num_group; i++) | |
707 | { | |
708 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
709 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
710 | unsigned int n_elt = shdr->sh_size / 4; | |
711 | ||
712 | while (--n_elt != 0) | |
713 | if ((++idx)->shdr->bfd_section) | |
714 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
715 | else if (idx->shdr->sh_type == SHT_RELA | |
716 | || idx->shdr->sh_type == SHT_REL) | |
717 | /* We won't include relocation sections in section groups in | |
718 | output object files. We adjust the group section size here | |
719 | so that relocatable link will work correctly when | |
720 | relocation sections are in section group in input object | |
721 | files. */ | |
722 | shdr->bfd_section->size -= 4; | |
723 | else | |
724 | { | |
725 | /* There are some unknown sections in the group. */ | |
726 | (*_bfd_error_handler) | |
d003868e AM |
727 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
728 | abfd, | |
3d7f7666 | 729 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
730 | bfd_elf_string_from_elf_section (abfd, |
731 | (elf_elfheader (abfd) | |
732 | ->e_shstrndx), | |
733 | idx->shdr->sh_name), | |
3d7f7666 L |
734 | shdr->bfd_section->name); |
735 | result = FALSE; | |
736 | } | |
737 | } | |
738 | return result; | |
739 | } | |
740 | ||
72adc230 AM |
741 | bfd_boolean |
742 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
743 | { | |
744 | return elf_next_in_group (sec) != NULL; | |
745 | } | |
746 | ||
252b5132 RH |
747 | /* Make a BFD section from an ELF section. We store a pointer to the |
748 | BFD section in the bfd_section field of the header. */ | |
749 | ||
b34976b6 | 750 | bfd_boolean |
217aa764 AM |
751 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
752 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
753 | const char *name, |
754 | int shindex) | |
252b5132 RH |
755 | { |
756 | asection *newsect; | |
757 | flagword flags; | |
9c5bfbb7 | 758 | const struct elf_backend_data *bed; |
252b5132 RH |
759 | |
760 | if (hdr->bfd_section != NULL) | |
761 | { | |
762 | BFD_ASSERT (strcmp (name, | |
763 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 764 | return TRUE; |
252b5132 RH |
765 | } |
766 | ||
767 | newsect = bfd_make_section_anyway (abfd, name); | |
768 | if (newsect == NULL) | |
b34976b6 | 769 | return FALSE; |
252b5132 | 770 | |
1829f4b2 AM |
771 | hdr->bfd_section = newsect; |
772 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 773 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 774 | |
2f89ff8d L |
775 | /* Always use the real type/flags. */ |
776 | elf_section_type (newsect) = hdr->sh_type; | |
777 | elf_section_flags (newsect) = hdr->sh_flags; | |
778 | ||
252b5132 RH |
779 | newsect->filepos = hdr->sh_offset; |
780 | ||
781 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
782 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
783 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 784 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 785 | return FALSE; |
252b5132 RH |
786 | |
787 | flags = SEC_NO_FLAGS; | |
788 | if (hdr->sh_type != SHT_NOBITS) | |
789 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 790 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 791 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
792 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
793 | { | |
794 | flags |= SEC_ALLOC; | |
795 | if (hdr->sh_type != SHT_NOBITS) | |
796 | flags |= SEC_LOAD; | |
797 | } | |
798 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
799 | flags |= SEC_READONLY; | |
800 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
801 | flags |= SEC_CODE; | |
802 | else if ((flags & SEC_LOAD) != 0) | |
803 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
804 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
805 | { | |
806 | flags |= SEC_MERGE; | |
807 | newsect->entsize = hdr->sh_entsize; | |
808 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
809 | flags |= SEC_STRINGS; | |
810 | } | |
dbb410c3 AM |
811 | if (hdr->sh_flags & SHF_GROUP) |
812 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 813 | return FALSE; |
13ae64f3 JJ |
814 | if ((hdr->sh_flags & SHF_TLS) != 0) |
815 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 816 | |
3d2b39cf | 817 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 818 | { |
3d2b39cf L |
819 | /* The debugging sections appear to be recognized only by name, |
820 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
821 | static const struct | |
822 | { | |
823 | const char *name; | |
824 | int len; | |
825 | } debug_sections [] = | |
826 | { | |
0112cd26 | 827 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
828 | { NULL, 0 }, /* 'e' */ |
829 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 830 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
831 | { NULL, 0 }, /* 'h' */ |
832 | { NULL, 0 }, /* 'i' */ | |
833 | { NULL, 0 }, /* 'j' */ | |
834 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 835 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
836 | { NULL, 0 }, /* 'm' */ |
837 | { NULL, 0 }, /* 'n' */ | |
838 | { NULL, 0 }, /* 'o' */ | |
839 | { NULL, 0 }, /* 'p' */ | |
840 | { NULL, 0 }, /* 'q' */ | |
841 | { NULL, 0 }, /* 'r' */ | |
0112cd26 | 842 | { STRING_COMMA_LEN ("stab") } /* 's' */ |
3d2b39cf L |
843 | }; |
844 | ||
845 | if (name [0] == '.') | |
846 | { | |
847 | int i = name [1] - 'd'; | |
848 | if (i >= 0 | |
849 | && i < (int) ARRAY_SIZE (debug_sections) | |
850 | && debug_sections [i].name != NULL | |
851 | && strncmp (&name [1], debug_sections [i].name, | |
852 | debug_sections [i].len) == 0) | |
853 | flags |= SEC_DEBUGGING; | |
854 | } | |
855 | } | |
252b5132 RH |
856 | |
857 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
858 | only link a single copy of the section. This is used to support | |
859 | g++. g++ will emit each template expansion in its own section. | |
860 | The symbols will be defined as weak, so that multiple definitions | |
861 | are permitted. The GNU linker extension is to actually discard | |
862 | all but one of the sections. */ | |
0112cd26 | 863 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 864 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
865 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
866 | ||
fa152c49 JW |
867 | bed = get_elf_backend_data (abfd); |
868 | if (bed->elf_backend_section_flags) | |
869 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 870 | return FALSE; |
fa152c49 | 871 | |
252b5132 | 872 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 873 | return FALSE; |
252b5132 RH |
874 | |
875 | if ((flags & SEC_ALLOC) != 0) | |
876 | { | |
877 | Elf_Internal_Phdr *phdr; | |
878 | unsigned int i; | |
879 | ||
880 | /* Look through the phdrs to see if we need to adjust the lma. | |
881 | If all the p_paddr fields are zero, we ignore them, since | |
882 | some ELF linkers produce such output. */ | |
883 | phdr = elf_tdata (abfd)->phdr; | |
884 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
885 | { | |
886 | if (phdr->p_paddr != 0) | |
887 | break; | |
888 | } | |
889 | if (i < elf_elfheader (abfd)->e_phnum) | |
890 | { | |
891 | phdr = elf_tdata (abfd)->phdr; | |
892 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
893 | { | |
e0e8c97f NC |
894 | /* This section is part of this segment if its file |
895 | offset plus size lies within the segment's memory | |
896 | span and, if the section is loaded, the extent of the | |
47d9a591 | 897 | loaded data lies within the extent of the segment. |
bf36db18 NC |
898 | |
899 | Note - we used to check the p_paddr field as well, and | |
900 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 901 | though, as a perfectly valid initialised segment can |
bf36db18 | 902 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 903 | place special significance on the address 0 and |
bf36db18 NC |
904 | executables need to be able to have a segment which |
905 | covers this address. */ | |
252b5132 | 906 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
907 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
908 | && (hdr->sh_offset + hdr->sh_size | |
909 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 910 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
911 | || (hdr->sh_offset + hdr->sh_size |
912 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 913 | { |
dba143ef | 914 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
915 | newsect->lma = (phdr->p_paddr |
916 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
917 | else |
918 | /* We used to use the same adjustment for SEC_LOAD | |
919 | sections, but that doesn't work if the segment | |
920 | is packed with code from multiple VMAs. | |
921 | Instead we calculate the section LMA based on | |
922 | the segment LMA. It is assumed that the | |
923 | segment will contain sections with contiguous | |
924 | LMAs, even if the VMAs are not. */ | |
925 | newsect->lma = (phdr->p_paddr | |
926 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
927 | |
928 | /* With contiguous segments, we can't tell from file | |
929 | offsets whether a section with zero size should | |
930 | be placed at the end of one segment or the | |
931 | beginning of the next. Decide based on vaddr. */ | |
932 | if (hdr->sh_addr >= phdr->p_vaddr | |
933 | && (hdr->sh_addr + hdr->sh_size | |
934 | <= phdr->p_vaddr + phdr->p_memsz)) | |
935 | break; | |
252b5132 RH |
936 | } |
937 | } | |
938 | } | |
939 | } | |
940 | ||
b34976b6 | 941 | return TRUE; |
252b5132 RH |
942 | } |
943 | ||
944 | /* | |
945 | INTERNAL_FUNCTION | |
946 | bfd_elf_find_section | |
947 | ||
948 | SYNOPSIS | |
949 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
950 | ||
951 | DESCRIPTION | |
952 | Helper functions for GDB to locate the string tables. | |
953 | Since BFD hides string tables from callers, GDB needs to use an | |
954 | internal hook to find them. Sun's .stabstr, in particular, | |
955 | isn't even pointed to by the .stab section, so ordinary | |
956 | mechanisms wouldn't work to find it, even if we had some. | |
957 | */ | |
958 | ||
959 | struct elf_internal_shdr * | |
217aa764 | 960 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
961 | { |
962 | Elf_Internal_Shdr **i_shdrp; | |
963 | char *shstrtab; | |
964 | unsigned int max; | |
965 | unsigned int i; | |
966 | ||
967 | i_shdrp = elf_elfsections (abfd); | |
968 | if (i_shdrp != NULL) | |
969 | { | |
9ad5cbcf AM |
970 | shstrtab = bfd_elf_get_str_section (abfd, |
971 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
972 | if (shstrtab != NULL) |
973 | { | |
9ad5cbcf | 974 | max = elf_numsections (abfd); |
252b5132 RH |
975 | for (i = 1; i < max; i++) |
976 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
977 | return i_shdrp[i]; | |
978 | } | |
979 | } | |
980 | return 0; | |
981 | } | |
982 | ||
983 | const char *const bfd_elf_section_type_names[] = { | |
984 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
985 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
986 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
987 | }; | |
988 | ||
1049f94e | 989 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
990 | output, and the reloc is against an external symbol, and nothing |
991 | has given us any additional addend, the resulting reloc will also | |
992 | be against the same symbol. In such a case, we don't want to | |
993 | change anything about the way the reloc is handled, since it will | |
994 | all be done at final link time. Rather than put special case code | |
995 | into bfd_perform_relocation, all the reloc types use this howto | |
996 | function. It just short circuits the reloc if producing | |
1049f94e | 997 | relocatable output against an external symbol. */ |
252b5132 | 998 | |
252b5132 | 999 | bfd_reloc_status_type |
217aa764 AM |
1000 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1001 | arelent *reloc_entry, | |
1002 | asymbol *symbol, | |
1003 | void *data ATTRIBUTE_UNUSED, | |
1004 | asection *input_section, | |
1005 | bfd *output_bfd, | |
1006 | char **error_message ATTRIBUTE_UNUSED) | |
1007 | { | |
1008 | if (output_bfd != NULL | |
252b5132 RH |
1009 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1010 | && (! reloc_entry->howto->partial_inplace | |
1011 | || reloc_entry->addend == 0)) | |
1012 | { | |
1013 | reloc_entry->address += input_section->output_offset; | |
1014 | return bfd_reloc_ok; | |
1015 | } | |
1016 | ||
1017 | return bfd_reloc_continue; | |
1018 | } | |
1019 | \f | |
d3c456e9 JJ |
1020 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
1021 | ||
1022 | static void | |
217aa764 AM |
1023 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
1024 | asection *sec) | |
d3c456e9 | 1025 | { |
68bfbfcc AM |
1026 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
1027 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
1028 | } |
1029 | ||
8550eb6e JJ |
1030 | /* Finish SHF_MERGE section merging. */ |
1031 | ||
b34976b6 | 1032 | bfd_boolean |
217aa764 | 1033 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 1034 | { |
57ceae94 AM |
1035 | bfd *ibfd; |
1036 | asection *sec; | |
1037 | ||
0eddce27 | 1038 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 1039 | return FALSE; |
57ceae94 AM |
1040 | |
1041 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
1042 | if ((ibfd->flags & DYNAMIC) == 0) | |
1043 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1044 | if ((sec->flags & SEC_MERGE) != 0 | |
1045 | && !bfd_is_abs_section (sec->output_section)) | |
1046 | { | |
1047 | struct bfd_elf_section_data *secdata; | |
1048 | ||
1049 | secdata = elf_section_data (sec); | |
1050 | if (! _bfd_add_merge_section (abfd, | |
1051 | &elf_hash_table (info)->merge_info, | |
1052 | sec, &secdata->sec_info)) | |
1053 | return FALSE; | |
1054 | else if (secdata->sec_info) | |
1055 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
1056 | } | |
1057 | ||
1058 | if (elf_hash_table (info)->merge_info != NULL) | |
1059 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 1060 | merge_sections_remove_hook); |
b34976b6 | 1061 | return TRUE; |
8550eb6e | 1062 | } |
2d653fc7 AM |
1063 | |
1064 | void | |
217aa764 | 1065 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1066 | { |
1067 | sec->output_section = bfd_abs_section_ptr; | |
1068 | sec->output_offset = sec->vma; | |
0eddce27 | 1069 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1070 | return; |
1071 | ||
68bfbfcc | 1072 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1073 | } |
8550eb6e | 1074 | \f |
0ac4564e L |
1075 | /* Copy the program header and other data from one object module to |
1076 | another. */ | |
252b5132 | 1077 | |
b34976b6 | 1078 | bfd_boolean |
217aa764 | 1079 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1080 | { |
1081 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1082 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1083 | return TRUE; |
2d502050 L |
1084 | |
1085 | BFD_ASSERT (!elf_flags_init (obfd) | |
1086 | || (elf_elfheader (obfd)->e_flags | |
1087 | == elf_elfheader (ibfd)->e_flags)); | |
1088 | ||
0ac4564e | 1089 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1090 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1091 | elf_flags_init (obfd) = TRUE; |
1092 | return TRUE; | |
2d502050 L |
1093 | } |
1094 | ||
cedc298e L |
1095 | static const char * |
1096 | get_segment_type (unsigned int p_type) | |
1097 | { | |
1098 | const char *pt; | |
1099 | switch (p_type) | |
1100 | { | |
1101 | case PT_NULL: pt = "NULL"; break; | |
1102 | case PT_LOAD: pt = "LOAD"; break; | |
1103 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1104 | case PT_INTERP: pt = "INTERP"; break; | |
1105 | case PT_NOTE: pt = "NOTE"; break; | |
1106 | case PT_SHLIB: pt = "SHLIB"; break; | |
1107 | case PT_PHDR: pt = "PHDR"; break; | |
1108 | case PT_TLS: pt = "TLS"; break; | |
1109 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
1110 | case PT_GNU_STACK: pt = "STACK"; break; | |
1111 | case PT_GNU_RELRO: pt = "RELRO"; break; | |
1112 | default: pt = NULL; break; | |
1113 | } | |
1114 | return pt; | |
1115 | } | |
1116 | ||
f0b79d91 L |
1117 | /* Print out the program headers. */ |
1118 | ||
b34976b6 | 1119 | bfd_boolean |
217aa764 | 1120 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1121 | { |
217aa764 | 1122 | FILE *f = farg; |
252b5132 RH |
1123 | Elf_Internal_Phdr *p; |
1124 | asection *s; | |
1125 | bfd_byte *dynbuf = NULL; | |
1126 | ||
1127 | p = elf_tdata (abfd)->phdr; | |
1128 | if (p != NULL) | |
1129 | { | |
1130 | unsigned int i, c; | |
1131 | ||
1132 | fprintf (f, _("\nProgram Header:\n")); | |
1133 | c = elf_elfheader (abfd)->e_phnum; | |
1134 | for (i = 0; i < c; i++, p++) | |
1135 | { | |
cedc298e | 1136 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1137 | char buf[20]; |
1138 | ||
cedc298e | 1139 | if (pt == NULL) |
252b5132 | 1140 | { |
cedc298e L |
1141 | sprintf (buf, "0x%lx", p->p_type); |
1142 | pt = buf; | |
252b5132 | 1143 | } |
dc810e39 | 1144 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1145 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1146 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1147 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1148 | fprintf (f, " paddr 0x"); |
60b89a18 | 1149 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1150 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1151 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1152 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1153 | fprintf (f, " memsz 0x"); |
60b89a18 | 1154 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1155 | fprintf (f, " flags %c%c%c", |
1156 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1157 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1158 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1159 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1160 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1161 | fprintf (f, "\n"); |
1162 | } | |
1163 | } | |
1164 | ||
1165 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1166 | if (s != NULL) | |
1167 | { | |
1168 | int elfsec; | |
dc810e39 | 1169 | unsigned long shlink; |
252b5132 RH |
1170 | bfd_byte *extdyn, *extdynend; |
1171 | size_t extdynsize; | |
217aa764 | 1172 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1173 | |
1174 | fprintf (f, _("\nDynamic Section:\n")); | |
1175 | ||
eea6121a | 1176 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1177 | goto error_return; |
1178 | ||
1179 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1180 | if (elfsec == -1) | |
1181 | goto error_return; | |
dc810e39 | 1182 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1183 | |
1184 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1185 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1186 | ||
1187 | extdyn = dynbuf; | |
eea6121a | 1188 | extdynend = extdyn + s->size; |
252b5132 RH |
1189 | for (; extdyn < extdynend; extdyn += extdynsize) |
1190 | { | |
1191 | Elf_Internal_Dyn dyn; | |
1192 | const char *name; | |
1193 | char ab[20]; | |
b34976b6 | 1194 | bfd_boolean stringp; |
252b5132 | 1195 | |
217aa764 | 1196 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1197 | |
1198 | if (dyn.d_tag == DT_NULL) | |
1199 | break; | |
1200 | ||
b34976b6 | 1201 | stringp = FALSE; |
252b5132 RH |
1202 | switch (dyn.d_tag) |
1203 | { | |
1204 | default: | |
1205 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1206 | name = ab; | |
1207 | break; | |
1208 | ||
b34976b6 | 1209 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1210 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1211 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1212 | case DT_HASH: name = "HASH"; break; | |
1213 | case DT_STRTAB: name = "STRTAB"; break; | |
1214 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1215 | case DT_RELA: name = "RELA"; break; | |
1216 | case DT_RELASZ: name = "RELASZ"; break; | |
1217 | case DT_RELAENT: name = "RELAENT"; break; | |
1218 | case DT_STRSZ: name = "STRSZ"; break; | |
1219 | case DT_SYMENT: name = "SYMENT"; break; | |
1220 | case DT_INIT: name = "INIT"; break; | |
1221 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1222 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1223 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1224 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1225 | case DT_REL: name = "REL"; break; | |
1226 | case DT_RELSZ: name = "RELSZ"; break; | |
1227 | case DT_RELENT: name = "RELENT"; break; | |
1228 | case DT_PLTREL: name = "PLTREL"; break; | |
1229 | case DT_DEBUG: name = "DEBUG"; break; | |
1230 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1231 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1232 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1233 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1234 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1235 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1236 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1237 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1238 | case DT_FLAGS: name = "FLAGS"; break; |
1239 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1240 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1241 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1242 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1243 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1244 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1245 | case DT_FEATURE: name = "FEATURE"; break; | |
1246 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1247 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1248 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1249 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1250 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1251 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1252 | case DT_PLTPAD: name = "PLTPAD"; break; |
1253 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1254 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1255 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1256 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1257 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1258 | case DT_VERSYM: name = "VERSYM"; break; |
1259 | case DT_VERDEF: name = "VERDEF"; break; | |
1260 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1261 | case DT_VERNEED: name = "VERNEED"; break; | |
1262 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1263 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1264 | case DT_USED: name = "USED"; break; |
b34976b6 | 1265 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1266 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1267 | } |
1268 | ||
1269 | fprintf (f, " %-11s ", name); | |
1270 | if (! stringp) | |
1271 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1272 | else | |
1273 | { | |
1274 | const char *string; | |
dc810e39 | 1275 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1276 | |
dc810e39 | 1277 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1278 | if (string == NULL) |
1279 | goto error_return; | |
1280 | fprintf (f, "%s", string); | |
1281 | } | |
1282 | fprintf (f, "\n"); | |
1283 | } | |
1284 | ||
1285 | free (dynbuf); | |
1286 | dynbuf = NULL; | |
1287 | } | |
1288 | ||
1289 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1290 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1291 | { | |
fc0e6df6 | 1292 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1293 | return FALSE; |
252b5132 RH |
1294 | } |
1295 | ||
1296 | if (elf_dynverdef (abfd) != 0) | |
1297 | { | |
1298 | Elf_Internal_Verdef *t; | |
1299 | ||
1300 | fprintf (f, _("\nVersion definitions:\n")); | |
1301 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1302 | { | |
1303 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1304 | t->vd_flags, t->vd_hash, |
1305 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1306 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1307 | { |
1308 | Elf_Internal_Verdaux *a; | |
1309 | ||
1310 | fprintf (f, "\t"); | |
1311 | for (a = t->vd_auxptr->vda_nextptr; | |
1312 | a != NULL; | |
1313 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1314 | fprintf (f, "%s ", |
1315 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1316 | fprintf (f, "\n"); |
1317 | } | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | if (elf_dynverref (abfd) != 0) | |
1322 | { | |
1323 | Elf_Internal_Verneed *t; | |
1324 | ||
1325 | fprintf (f, _("\nVersion References:\n")); | |
1326 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1327 | { | |
1328 | Elf_Internal_Vernaux *a; | |
1329 | ||
d0fb9a8d JJ |
1330 | fprintf (f, _(" required from %s:\n"), |
1331 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1332 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1333 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1334 | a->vna_flags, a->vna_other, |
1335 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1336 | } |
1337 | } | |
1338 | ||
b34976b6 | 1339 | return TRUE; |
252b5132 RH |
1340 | |
1341 | error_return: | |
1342 | if (dynbuf != NULL) | |
1343 | free (dynbuf); | |
b34976b6 | 1344 | return FALSE; |
252b5132 RH |
1345 | } |
1346 | ||
1347 | /* Display ELF-specific fields of a symbol. */ | |
1348 | ||
1349 | void | |
217aa764 AM |
1350 | bfd_elf_print_symbol (bfd *abfd, |
1351 | void *filep, | |
1352 | asymbol *symbol, | |
1353 | bfd_print_symbol_type how) | |
252b5132 | 1354 | { |
217aa764 | 1355 | FILE *file = filep; |
252b5132 RH |
1356 | switch (how) |
1357 | { | |
1358 | case bfd_print_symbol_name: | |
1359 | fprintf (file, "%s", symbol->name); | |
1360 | break; | |
1361 | case bfd_print_symbol_more: | |
1362 | fprintf (file, "elf "); | |
60b89a18 | 1363 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1364 | fprintf (file, " %lx", (long) symbol->flags); |
1365 | break; | |
1366 | case bfd_print_symbol_all: | |
1367 | { | |
4e8a9624 AM |
1368 | const char *section_name; |
1369 | const char *name = NULL; | |
9c5bfbb7 | 1370 | const struct elf_backend_data *bed; |
7a13edea | 1371 | unsigned char st_other; |
dbb410c3 | 1372 | bfd_vma val; |
c044fabd | 1373 | |
252b5132 | 1374 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1375 | |
1376 | bed = get_elf_backend_data (abfd); | |
1377 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1378 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1379 | |
1380 | if (name == NULL) | |
1381 | { | |
7ee38065 | 1382 | name = symbol->name; |
217aa764 | 1383 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1384 | } |
1385 | ||
252b5132 RH |
1386 | fprintf (file, " %s\t", section_name); |
1387 | /* Print the "other" value for a symbol. For common symbols, | |
1388 | we've already printed the size; now print the alignment. | |
1389 | For other symbols, we have no specified alignment, and | |
1390 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1391 | if (bfd_is_com_section (symbol->section)) |
1392 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1393 | else | |
1394 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1395 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1396 | |
1397 | /* If we have version information, print it. */ | |
1398 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1399 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1400 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1401 | { | |
1402 | unsigned int vernum; | |
1403 | const char *version_string; | |
1404 | ||
1405 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1406 | ||
1407 | if (vernum == 0) | |
1408 | version_string = ""; | |
1409 | else if (vernum == 1) | |
1410 | version_string = "Base"; | |
1411 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1412 | version_string = | |
1413 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1414 | else | |
1415 | { | |
1416 | Elf_Internal_Verneed *t; | |
1417 | ||
1418 | version_string = ""; | |
1419 | for (t = elf_tdata (abfd)->verref; | |
1420 | t != NULL; | |
1421 | t = t->vn_nextref) | |
1422 | { | |
1423 | Elf_Internal_Vernaux *a; | |
1424 | ||
1425 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1426 | { | |
1427 | if (a->vna_other == vernum) | |
1428 | { | |
1429 | version_string = a->vna_nodename; | |
1430 | break; | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1437 | fprintf (file, " %-11s", version_string); | |
1438 | else | |
1439 | { | |
1440 | int i; | |
1441 | ||
1442 | fprintf (file, " (%s)", version_string); | |
1443 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1444 | putc (' ', file); | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1449 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1450 | |
7a13edea NC |
1451 | switch (st_other) |
1452 | { | |
1453 | case 0: break; | |
1454 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1455 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1456 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1457 | default: | |
1458 | /* Some other non-defined flags are also present, so print | |
1459 | everything hex. */ | |
1460 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1461 | } | |
252b5132 | 1462 | |
587ff49e | 1463 | fprintf (file, " %s", name); |
252b5132 RH |
1464 | } |
1465 | break; | |
1466 | } | |
1467 | } | |
1468 | \f | |
1469 | /* Create an entry in an ELF linker hash table. */ | |
1470 | ||
1471 | struct bfd_hash_entry * | |
217aa764 AM |
1472 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1473 | struct bfd_hash_table *table, | |
1474 | const char *string) | |
252b5132 | 1475 | { |
252b5132 RH |
1476 | /* Allocate the structure if it has not already been allocated by a |
1477 | subclass. */ | |
51b64d56 AM |
1478 | if (entry == NULL) |
1479 | { | |
1480 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1481 | if (entry == NULL) | |
1482 | return entry; | |
1483 | } | |
252b5132 RH |
1484 | |
1485 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1486 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1487 | if (entry != NULL) | |
252b5132 | 1488 | { |
51b64d56 AM |
1489 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1490 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1491 | ||
252b5132 RH |
1492 | /* Set local fields. */ |
1493 | ret->indx = -1; | |
252b5132 | 1494 | ret->dynindx = -1; |
a6aa5195 AM |
1495 | ret->got = htab->init_got_refcount; |
1496 | ret->plt = htab->init_plt_refcount; | |
f6e332e6 AM |
1497 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) |
1498 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1499 | /* Assume that we have been called by a non-ELF symbol reader. |
1500 | This flag is then reset by the code which reads an ELF input | |
1501 | file. This ensures that a symbol created by a non-ELF symbol | |
1502 | reader will have the flag set correctly. */ | |
f5385ebf | 1503 | ret->non_elf = 1; |
252b5132 RH |
1504 | } |
1505 | ||
51b64d56 | 1506 | return entry; |
252b5132 RH |
1507 | } |
1508 | ||
2920b85c | 1509 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1510 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1511 | |
c61b8717 | 1512 | void |
fcfa13d2 | 1513 | _bfd_elf_link_hash_copy_indirect (struct bfd_link_info *info, |
217aa764 AM |
1514 | struct elf_link_hash_entry *dir, |
1515 | struct elf_link_hash_entry *ind) | |
2920b85c | 1516 | { |
fcfa13d2 | 1517 | struct elf_link_hash_table *htab; |
3c3e9281 | 1518 | |
2920b85c RH |
1519 | /* Copy down any references that we may have already seen to the |
1520 | symbol which just became indirect. */ | |
1521 | ||
f5385ebf AM |
1522 | dir->ref_dynamic |= ind->ref_dynamic; |
1523 | dir->ref_regular |= ind->ref_regular; | |
1524 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1525 | dir->non_got_ref |= ind->non_got_ref; | |
1526 | dir->needs_plt |= ind->needs_plt; | |
1527 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1528 | |
1e370bd2 | 1529 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1530 | return; |
1531 | ||
51b64d56 | 1532 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1533 | These may have been already set up by a check_relocs routine. */ |
fcfa13d2 AM |
1534 | htab = elf_hash_table (info); |
1535 | if (ind->got.refcount > htab->init_got_refcount.refcount) | |
2920b85c | 1536 | { |
fcfa13d2 AM |
1537 | if (dir->got.refcount < 0) |
1538 | dir->got.refcount = 0; | |
1539 | dir->got.refcount += ind->got.refcount; | |
1540 | ind->got.refcount = htab->init_got_refcount.refcount; | |
2920b85c | 1541 | } |
2920b85c | 1542 | |
fcfa13d2 | 1543 | if (ind->plt.refcount > htab->init_plt_refcount.refcount) |
2920b85c | 1544 | { |
fcfa13d2 AM |
1545 | if (dir->plt.refcount < 0) |
1546 | dir->plt.refcount = 0; | |
1547 | dir->plt.refcount += ind->plt.refcount; | |
1548 | ind->plt.refcount = htab->init_plt_refcount.refcount; | |
2920b85c | 1549 | } |
2920b85c | 1550 | |
fcfa13d2 | 1551 | if (ind->dynindx != -1) |
2920b85c | 1552 | { |
fcfa13d2 AM |
1553 | if (dir->dynindx != -1) |
1554 | _bfd_elf_strtab_delref (htab->dynstr, dir->dynstr_index); | |
2920b85c RH |
1555 | dir->dynindx = ind->dynindx; |
1556 | dir->dynstr_index = ind->dynstr_index; | |
1557 | ind->dynindx = -1; | |
1558 | ind->dynstr_index = 0; | |
1559 | } | |
2920b85c RH |
1560 | } |
1561 | ||
c61b8717 | 1562 | void |
217aa764 AM |
1563 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1564 | struct elf_link_hash_entry *h, | |
1565 | bfd_boolean force_local) | |
2920b85c | 1566 | { |
a6aa5195 | 1567 | h->plt = elf_hash_table (info)->init_plt_offset; |
f5385ebf | 1568 | h->needs_plt = 0; |
e5094212 AM |
1569 | if (force_local) |
1570 | { | |
f5385ebf | 1571 | h->forced_local = 1; |
e5094212 AM |
1572 | if (h->dynindx != -1) |
1573 | { | |
1574 | h->dynindx = -1; | |
1575 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1576 | h->dynstr_index); | |
1577 | } | |
1578 | } | |
2920b85c RH |
1579 | } |
1580 | ||
252b5132 RH |
1581 | /* Initialize an ELF linker hash table. */ |
1582 | ||
b34976b6 | 1583 | bfd_boolean |
217aa764 AM |
1584 | _bfd_elf_link_hash_table_init |
1585 | (struct elf_link_hash_table *table, | |
1586 | bfd *abfd, | |
1587 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1588 | struct bfd_hash_table *, | |
66eb6687 AM |
1589 | const char *), |
1590 | unsigned int entsize) | |
252b5132 | 1591 | { |
b34976b6 | 1592 | bfd_boolean ret; |
a6aa5195 | 1593 | int can_refcount = get_elf_backend_data (abfd)->can_refcount; |
8ea2e4bd | 1594 | |
b34976b6 | 1595 | table->dynamic_sections_created = FALSE; |
252b5132 | 1596 | table->dynobj = NULL; |
a6aa5195 AM |
1597 | table->init_got_refcount.refcount = can_refcount - 1; |
1598 | table->init_plt_refcount.refcount = can_refcount - 1; | |
1599 | table->init_got_offset.offset = -(bfd_vma) 1; | |
1600 | table->init_plt_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1601 | /* The first dynamic symbol is a dummy. */ |
1602 | table->dynsymcount = 1; | |
1603 | table->dynstr = NULL; | |
1604 | table->bucketcount = 0; | |
1605 | table->needed = NULL; | |
1606 | table->hgot = NULL; | |
ed66ec07 | 1607 | table->hplt = NULL; |
f5fa8ca2 | 1608 | table->merge_info = NULL; |
3722b82f | 1609 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1610 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1611 | table->dynlocal = NULL; |
73722af0 | 1612 | table->runpath = NULL; |
e1918d23 AM |
1613 | table->tls_sec = NULL; |
1614 | table->tls_size = 0; | |
73722af0 | 1615 | table->loaded = NULL; |
67687978 | 1616 | table->is_relocatable_executable = FALSE; |
73722af0 | 1617 | |
66eb6687 | 1618 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
8ea2e4bd NC |
1619 | table->root.type = bfd_link_elf_hash_table; |
1620 | ||
1621 | return ret; | |
252b5132 RH |
1622 | } |
1623 | ||
1624 | /* Create an ELF linker hash table. */ | |
1625 | ||
1626 | struct bfd_link_hash_table * | |
217aa764 | 1627 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1628 | { |
1629 | struct elf_link_hash_table *ret; | |
dc810e39 | 1630 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1631 | |
217aa764 AM |
1632 | ret = bfd_malloc (amt); |
1633 | if (ret == NULL) | |
252b5132 RH |
1634 | return NULL; |
1635 | ||
66eb6687 AM |
1636 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc, |
1637 | sizeof (struct elf_link_hash_entry))) | |
252b5132 | 1638 | { |
e2d34d7d | 1639 | free (ret); |
252b5132 RH |
1640 | return NULL; |
1641 | } | |
1642 | ||
1643 | return &ret->root; | |
1644 | } | |
1645 | ||
1646 | /* This is a hook for the ELF emulation code in the generic linker to | |
1647 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1648 | entry for a dynamic object. */ |
252b5132 RH |
1649 | |
1650 | void | |
217aa764 | 1651 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1652 | { |
1653 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1654 | && bfd_get_format (abfd) == bfd_object) | |
1655 | elf_dt_name (abfd) = name; | |
1656 | } | |
1657 | ||
e56f61be L |
1658 | int |
1659 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1660 | { | |
1661 | int lib_class; | |
1662 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1663 | && bfd_get_format (abfd) == bfd_object) | |
1664 | lib_class = elf_dyn_lib_class (abfd); | |
1665 | else | |
1666 | lib_class = 0; | |
1667 | return lib_class; | |
1668 | } | |
1669 | ||
74816898 | 1670 | void |
23fe9577 | 1671 | bfd_elf_set_dyn_lib_class (bfd *abfd, enum dynamic_lib_link_class lib_class) |
74816898 L |
1672 | { |
1673 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1674 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1675 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1676 | } |
1677 | ||
252b5132 RH |
1678 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1679 | the linker ELF emulation code. */ | |
1680 | ||
1681 | struct bfd_link_needed_list * | |
217aa764 AM |
1682 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1683 | struct bfd_link_info *info) | |
252b5132 | 1684 | { |
0eddce27 | 1685 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1686 | return NULL; |
1687 | return elf_hash_table (info)->needed; | |
1688 | } | |
1689 | ||
a963dc6a L |
1690 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1691 | hook for the linker ELF emulation code. */ | |
1692 | ||
1693 | struct bfd_link_needed_list * | |
217aa764 AM |
1694 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1695 | struct bfd_link_info *info) | |
a963dc6a | 1696 | { |
0eddce27 | 1697 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1698 | return NULL; |
1699 | return elf_hash_table (info)->runpath; | |
1700 | } | |
1701 | ||
252b5132 RH |
1702 | /* Get the name actually used for a dynamic object for a link. This |
1703 | is the SONAME entry if there is one. Otherwise, it is the string | |
1704 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1705 | ||
1706 | const char * | |
217aa764 | 1707 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1708 | { |
1709 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1710 | && bfd_get_format (abfd) == bfd_object) | |
1711 | return elf_dt_name (abfd); | |
1712 | return NULL; | |
1713 | } | |
1714 | ||
1715 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1716 | the ELF linker emulation code. */ | |
1717 | ||
b34976b6 | 1718 | bfd_boolean |
217aa764 AM |
1719 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1720 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1721 | { |
1722 | asection *s; | |
1723 | bfd_byte *dynbuf = NULL; | |
1724 | int elfsec; | |
dc810e39 | 1725 | unsigned long shlink; |
252b5132 RH |
1726 | bfd_byte *extdyn, *extdynend; |
1727 | size_t extdynsize; | |
217aa764 | 1728 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1729 | |
1730 | *pneeded = NULL; | |
1731 | ||
1732 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1733 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1734 | return TRUE; |
252b5132 RH |
1735 | |
1736 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1737 | if (s == NULL || s->size == 0) |
b34976b6 | 1738 | return TRUE; |
252b5132 | 1739 | |
eea6121a | 1740 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1741 | goto error_return; |
1742 | ||
1743 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1744 | if (elfsec == -1) | |
1745 | goto error_return; | |
1746 | ||
dc810e39 | 1747 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1748 | |
1749 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1750 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1751 | ||
1752 | extdyn = dynbuf; | |
eea6121a | 1753 | extdynend = extdyn + s->size; |
252b5132 RH |
1754 | for (; extdyn < extdynend; extdyn += extdynsize) |
1755 | { | |
1756 | Elf_Internal_Dyn dyn; | |
1757 | ||
217aa764 | 1758 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1759 | |
1760 | if (dyn.d_tag == DT_NULL) | |
1761 | break; | |
1762 | ||
1763 | if (dyn.d_tag == DT_NEEDED) | |
1764 | { | |
1765 | const char *string; | |
1766 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1767 | unsigned int tagv = dyn.d_un.d_val; |
1768 | bfd_size_type amt; | |
252b5132 | 1769 | |
dc810e39 | 1770 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1771 | if (string == NULL) |
1772 | goto error_return; | |
1773 | ||
dc810e39 | 1774 | amt = sizeof *l; |
217aa764 | 1775 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1776 | if (l == NULL) |
1777 | goto error_return; | |
1778 | ||
1779 | l->by = abfd; | |
1780 | l->name = string; | |
1781 | l->next = *pneeded; | |
1782 | *pneeded = l; | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | free (dynbuf); | |
1787 | ||
b34976b6 | 1788 | return TRUE; |
252b5132 RH |
1789 | |
1790 | error_return: | |
1791 | if (dynbuf != NULL) | |
1792 | free (dynbuf); | |
b34976b6 | 1793 | return FALSE; |
252b5132 RH |
1794 | } |
1795 | \f | |
1796 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1797 | ||
1798 | struct bfd_strtab_hash * | |
217aa764 | 1799 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1800 | { |
1801 | struct bfd_strtab_hash *ret; | |
1802 | ||
1803 | ret = _bfd_stringtab_init (); | |
1804 | if (ret != NULL) | |
1805 | { | |
1806 | bfd_size_type loc; | |
1807 | ||
b34976b6 | 1808 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1809 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1810 | if (loc == (bfd_size_type) -1) | |
1811 | { | |
1812 | _bfd_stringtab_free (ret); | |
1813 | ret = NULL; | |
1814 | } | |
1815 | } | |
1816 | return ret; | |
1817 | } | |
1818 | \f | |
1819 | /* ELF .o/exec file reading */ | |
1820 | ||
c044fabd | 1821 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1822 | |
b34976b6 | 1823 | bfd_boolean |
217aa764 | 1824 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1825 | { |
1826 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1827 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1828 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1829 | const char *name; |
252b5132 | 1830 | |
1b3a8575 AM |
1831 | name = bfd_elf_string_from_elf_section (abfd, |
1832 | elf_elfheader (abfd)->e_shstrndx, | |
1833 | hdr->sh_name); | |
933d961a JJ |
1834 | if (name == NULL) |
1835 | return FALSE; | |
252b5132 RH |
1836 | |
1837 | switch (hdr->sh_type) | |
1838 | { | |
1839 | case SHT_NULL: | |
1840 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1841 | return TRUE; |
252b5132 RH |
1842 | |
1843 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1844 | case SHT_NOBITS: /* .bss section. */ |
1845 | case SHT_HASH: /* .hash section. */ | |
1846 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1847 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1848 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1849 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1850 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1851 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1852 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1853 | |
797fc050 | 1854 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1855 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1856 | return FALSE; |
8e0ed13f NC |
1857 | if (hdr->sh_link > elf_numsections (abfd) |
1858 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1859 | return FALSE; | |
797fc050 AM |
1860 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1861 | { | |
1862 | Elf_Internal_Shdr *dynsymhdr; | |
1863 | ||
1864 | /* The shared libraries distributed with hpux11 have a bogus | |
1865 | sh_link field for the ".dynamic" section. Find the | |
1866 | string table for the ".dynsym" section instead. */ | |
1867 | if (elf_dynsymtab (abfd) != 0) | |
1868 | { | |
1869 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1870 | hdr->sh_link = dynsymhdr->sh_link; | |
1871 | } | |
1872 | else | |
1873 | { | |
1874 | unsigned int i, num_sec; | |
1875 | ||
1876 | num_sec = elf_numsections (abfd); | |
1877 | for (i = 1; i < num_sec; i++) | |
1878 | { | |
1879 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1880 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1881 | { | |
1882 | hdr->sh_link = dynsymhdr->sh_link; | |
1883 | break; | |
1884 | } | |
1885 | } | |
1886 | } | |
1887 | } | |
1888 | break; | |
1889 | ||
252b5132 RH |
1890 | case SHT_SYMTAB: /* A symbol table */ |
1891 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1892 | return TRUE; |
252b5132 | 1893 | |
a50b2160 JJ |
1894 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1895 | return FALSE; | |
252b5132 RH |
1896 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1897 | elf_onesymtab (abfd) = shindex; | |
1898 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1899 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1900 | abfd->flags |= HAS_SYMS; | |
1901 | ||
1902 | /* Sometimes a shared object will map in the symbol table. If | |
1903 | SHF_ALLOC is set, and this is a shared object, then we also | |
1904 | treat this section as a BFD section. We can not base the | |
1905 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1906 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1907 | linker. */ |
1908 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1909 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1910 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1911 | shindex)) | |
b34976b6 | 1912 | return FALSE; |
252b5132 | 1913 | |
1b3a8575 AM |
1914 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1915 | can't read symbols without that section loaded as well. It | |
1916 | is most likely specified by the next section header. */ | |
1917 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1918 | { | |
1919 | unsigned int i, num_sec; | |
1920 | ||
1921 | num_sec = elf_numsections (abfd); | |
1922 | for (i = shindex + 1; i < num_sec; i++) | |
1923 | { | |
1924 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1925 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1926 | && hdr2->sh_link == shindex) | |
1927 | break; | |
1928 | } | |
1929 | if (i == num_sec) | |
1930 | for (i = 1; i < shindex; i++) | |
1931 | { | |
1932 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1933 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1934 | && hdr2->sh_link == shindex) | |
1935 | break; | |
1936 | } | |
1937 | if (i != shindex) | |
1938 | return bfd_section_from_shdr (abfd, i); | |
1939 | } | |
b34976b6 | 1940 | return TRUE; |
252b5132 RH |
1941 | |
1942 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1943 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1944 | return TRUE; |
252b5132 | 1945 | |
a50b2160 JJ |
1946 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1947 | return FALSE; | |
252b5132 RH |
1948 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1949 | elf_dynsymtab (abfd) = shindex; | |
1950 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1951 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1952 | abfd->flags |= HAS_SYMS; | |
1953 | ||
1954 | /* Besides being a symbol table, we also treat this as a regular | |
1955 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1956 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1957 | |
9ad5cbcf AM |
1958 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1959 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1960 | return TRUE; |
9ad5cbcf | 1961 | |
1b3a8575 | 1962 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1963 | elf_symtab_shndx (abfd) = shindex; |
1964 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1965 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1966 | return TRUE; |
9ad5cbcf | 1967 | |
252b5132 RH |
1968 | case SHT_STRTAB: /* A string table */ |
1969 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1970 | return TRUE; |
252b5132 RH |
1971 | if (ehdr->e_shstrndx == shindex) |
1972 | { | |
1973 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1974 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1975 | return TRUE; |
252b5132 | 1976 | } |
1b3a8575 AM |
1977 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1978 | { | |
1979 | symtab_strtab: | |
1980 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1981 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1982 | return TRUE; | |
1983 | } | |
1984 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1985 | { | |
1986 | dynsymtab_strtab: | |
1987 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1988 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1989 | elf_elfsections (abfd)[shindex] = hdr; | |
1990 | /* We also treat this as a regular section, so that objcopy | |
1991 | can handle it. */ | |
6dc132d9 L |
1992 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1993 | shindex); | |
1b3a8575 | 1994 | } |
252b5132 | 1995 | |
1b3a8575 AM |
1996 | /* If the string table isn't one of the above, then treat it as a |
1997 | regular section. We need to scan all the headers to be sure, | |
1998 | just in case this strtab section appeared before the above. */ | |
1999 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
2000 | { | |
2001 | unsigned int i, num_sec; | |
252b5132 | 2002 | |
1b3a8575 AM |
2003 | num_sec = elf_numsections (abfd); |
2004 | for (i = 1; i < num_sec; i++) | |
2005 | { | |
2006 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2007 | if (hdr2->sh_link == shindex) | |
2008 | { | |
933d961a JJ |
2009 | /* Prevent endless recursion on broken objects. */ |
2010 | if (i == shindex) | |
2011 | return FALSE; | |
1b3a8575 AM |
2012 | if (! bfd_section_from_shdr (abfd, i)) |
2013 | return FALSE; | |
2014 | if (elf_onesymtab (abfd) == i) | |
2015 | goto symtab_strtab; | |
2016 | if (elf_dynsymtab (abfd) == i) | |
2017 | goto dynsymtab_strtab; | |
2018 | } | |
2019 | } | |
2020 | } | |
6dc132d9 | 2021 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2022 | |
2023 | case SHT_REL: | |
2024 | case SHT_RELA: | |
2025 | /* *These* do a lot of work -- but build no sections! */ | |
2026 | { | |
2027 | asection *target_sect; | |
2028 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 2029 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 2030 | |
aa2ca951 JJ |
2031 | if (hdr->sh_entsize |
2032 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
2033 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
2034 | return FALSE; | |
2035 | ||
03ae5f59 | 2036 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
2037 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
2038 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
2039 | { |
2040 | ((*_bfd_error_handler) | |
d003868e AM |
2041 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
2042 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
2043 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2044 | shindex); | |
03ae5f59 ILT |
2045 | } |
2046 | ||
252b5132 RH |
2047 | /* For some incomprehensible reason Oracle distributes |
2048 | libraries for Solaris in which some of the objects have | |
2049 | bogus sh_link fields. It would be nice if we could just | |
2050 | reject them, but, unfortunately, some people need to use | |
2051 | them. We scan through the section headers; if we find only | |
2052 | one suitable symbol table, we clobber the sh_link to point | |
2053 | to it. I hope this doesn't break anything. */ | |
2054 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
2055 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
2056 | { | |
9ad5cbcf | 2057 | unsigned int scan; |
252b5132 RH |
2058 | int found; |
2059 | ||
2060 | found = 0; | |
9ad5cbcf | 2061 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2062 | { |
2063 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2064 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2065 | { | |
2066 | if (found != 0) | |
2067 | { | |
2068 | found = 0; | |
2069 | break; | |
2070 | } | |
2071 | found = scan; | |
2072 | } | |
2073 | } | |
2074 | if (found != 0) | |
2075 | hdr->sh_link = found; | |
2076 | } | |
2077 | ||
2078 | /* Get the symbol table. */ | |
1b3a8575 AM |
2079 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2080 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2081 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 2082 | return FALSE; |
252b5132 RH |
2083 | |
2084 | /* If this reloc section does not use the main symbol table we | |
2085 | don't treat it as a reloc section. BFD can't adequately | |
2086 | represent such a section, so at least for now, we don't | |
c044fabd | 2087 | try. We just present it as a normal section. We also |
60bcf0fa | 2088 | can't use it as a reloc section if it points to the null |
185ef66d AM |
2089 | section, an invalid section, or another reloc section. */ |
2090 | if (hdr->sh_link != elf_onesymtab (abfd) | |
2091 | || hdr->sh_info == SHN_UNDEF | |
2092 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
2093 | || hdr->sh_info >= num_sec | |
2094 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2095 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
2096 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2097 | shindex); | |
252b5132 RH |
2098 | |
2099 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2100 | return FALSE; |
252b5132 RH |
2101 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2102 | if (target_sect == NULL) | |
b34976b6 | 2103 | return FALSE; |
252b5132 RH |
2104 | |
2105 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2106 | || target_sect->reloc_count == 0) | |
2107 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2108 | else | |
2109 | { | |
dc810e39 | 2110 | bfd_size_type amt; |
252b5132 | 2111 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2112 | amt = sizeof (*hdr2); |
217aa764 | 2113 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2114 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2115 | } | |
2116 | *hdr2 = *hdr; | |
2117 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2118 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2119 | target_sect->flags |= SEC_RELOC; |
2120 | target_sect->relocation = NULL; | |
2121 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2122 | /* In the section to which the relocations apply, mark whether |
2123 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2124 | if (hdr->sh_size != 0) |
68bfbfcc | 2125 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2126 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2127 | return TRUE; |
252b5132 | 2128 | } |
252b5132 RH |
2129 | |
2130 | case SHT_GNU_verdef: | |
2131 | elf_dynverdef (abfd) = shindex; | |
2132 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2133 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2134 | |
2135 | case SHT_GNU_versym: | |
a50b2160 JJ |
2136 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
2137 | return FALSE; | |
252b5132 RH |
2138 | elf_dynversym (abfd) = shindex; |
2139 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2140 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2141 | |
2142 | case SHT_GNU_verneed: | |
2143 | elf_dynverref (abfd) = shindex; | |
2144 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2145 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2146 | |
2147 | case SHT_SHLIB: | |
b34976b6 | 2148 | return TRUE; |
252b5132 | 2149 | |
dbb410c3 | 2150 | case SHT_GROUP: |
b885599b AM |
2151 | /* We need a BFD section for objcopy and relocatable linking, |
2152 | and it's handy to have the signature available as the section | |
2153 | name. */ | |
a50b2160 JJ |
2154 | if (hdr->sh_entsize != GRP_ENTRY_SIZE) |
2155 | return FALSE; | |
b885599b AM |
2156 | name = group_signature (abfd, hdr); |
2157 | if (name == NULL) | |
b34976b6 | 2158 | return FALSE; |
6dc132d9 | 2159 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2160 | return FALSE; |
dbb410c3 AM |
2161 | if (hdr->contents != NULL) |
2162 | { | |
2163 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2164 | unsigned int n_elt = hdr->sh_size / 4; | |
2165 | asection *s; | |
2166 | ||
b885599b AM |
2167 | if (idx->flags & GRP_COMDAT) |
2168 | hdr->bfd_section->flags | |
2169 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2170 | ||
45c5e9ed L |
2171 | /* We try to keep the same section order as it comes in. */ |
2172 | idx += n_elt; | |
dbb410c3 | 2173 | while (--n_elt != 0) |
45c5e9ed | 2174 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2175 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2176 | { |
945906ff | 2177 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2178 | break; |
2179 | } | |
2180 | } | |
2181 | break; | |
2182 | ||
252b5132 RH |
2183 | default: |
2184 | /* Check for any processor-specific section types. */ | |
3eb70a79 L |
2185 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
2186 | return TRUE; | |
2187 | ||
2188 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
2189 | { | |
2190 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
2191 | /* FIXME: How to properly handle allocated section reserved | |
2192 | for applications? */ | |
2193 | (*_bfd_error_handler) | |
2194 | (_("%B: don't know how to handle allocated, application " | |
2195 | "specific section `%s' [0x%8x]"), | |
2196 | abfd, name, hdr->sh_type); | |
2197 | else | |
2198 | /* Allow sections reserved for applications. */ | |
2199 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2200 | shindex); | |
2201 | } | |
2202 | else if (hdr->sh_type >= SHT_LOPROC | |
2203 | && hdr->sh_type <= SHT_HIPROC) | |
2204 | /* FIXME: We should handle this section. */ | |
2205 | (*_bfd_error_handler) | |
2206 | (_("%B: don't know how to handle processor specific section " | |
2207 | "`%s' [0x%8x]"), | |
2208 | abfd, name, hdr->sh_type); | |
2209 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
2210 | { |
2211 | /* Unrecognised OS-specific sections. */ | |
2212 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
2213 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
2214 | required to correctly process the section and the file should | |
2215 | be rejected with an error message. */ | |
2216 | (*_bfd_error_handler) | |
2217 | (_("%B: don't know how to handle OS specific section " | |
2218 | "`%s' [0x%8x]"), | |
2219 | abfd, name, hdr->sh_type); | |
2220 | else | |
2221 | /* Otherwise it should be processed. */ | |
2222 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
2223 | } | |
3eb70a79 L |
2224 | else |
2225 | /* FIXME: We should handle this section. */ | |
2226 | (*_bfd_error_handler) | |
2227 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
2228 | abfd, name, hdr->sh_type); | |
2229 | ||
2230 | return FALSE; | |
252b5132 RH |
2231 | } |
2232 | ||
b34976b6 | 2233 | return TRUE; |
252b5132 RH |
2234 | } |
2235 | ||
ec338859 AM |
2236 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2237 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2238 | ||
2239 | asection * | |
217aa764 AM |
2240 | bfd_section_from_r_symndx (bfd *abfd, |
2241 | struct sym_sec_cache *cache, | |
2242 | asection *sec, | |
2243 | unsigned long r_symndx) | |
ec338859 | 2244 | { |
ec338859 | 2245 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2246 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2247 | Elf_External_Sym_Shndx eshndx; | |
2248 | Elf_Internal_Sym isym; | |
ec338859 AM |
2249 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2250 | ||
2251 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2252 | return cache->sec[ent]; | |
2253 | ||
2254 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2255 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2256 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2257 | return NULL; |
9ad5cbcf | 2258 | |
ec338859 AM |
2259 | if (cache->abfd != abfd) |
2260 | { | |
2261 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2262 | cache->abfd = abfd; | |
2263 | } | |
2264 | cache->indx[ent] = r_symndx; | |
2265 | cache->sec[ent] = sec; | |
50bc7936 AM |
2266 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2267 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2268 | { |
2269 | asection *s; | |
6cdc0ccc | 2270 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2271 | if (s != NULL) |
2272 | cache->sec[ent] = s; | |
2273 | } | |
2274 | return cache->sec[ent]; | |
2275 | } | |
2276 | ||
252b5132 RH |
2277 | /* Given an ELF section number, retrieve the corresponding BFD |
2278 | section. */ | |
2279 | ||
2280 | asection * | |
217aa764 | 2281 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2282 | { |
9ad5cbcf | 2283 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2284 | return NULL; |
2285 | return elf_elfsections (abfd)[index]->bfd_section; | |
2286 | } | |
2287 | ||
b35d266b | 2288 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2289 | { |
0112cd26 NC |
2290 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2291 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2292 | }; |
2293 | ||
b35d266b | 2294 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2295 | { |
0112cd26 NC |
2296 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
2297 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2298 | }; |
2299 | ||
b35d266b | 2300 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2301 | { |
0112cd26 NC |
2302 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2303 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2304 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
2305 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
2306 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
2307 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2308 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2309 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2310 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2311 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2312 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2313 | }; |
2314 | ||
b35d266b | 2315 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2316 | { |
0112cd26 NC |
2317 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2318 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2319 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2320 | }; |
2321 | ||
b35d266b | 2322 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2323 | { |
0112cd26 NC |
2324 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2325 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2326 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2327 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2328 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2329 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2330 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2331 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2332 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2333 | }; |
2334 | ||
b35d266b | 2335 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2336 | { |
0112cd26 NC |
2337 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2338 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2339 | }; |
2340 | ||
b35d266b | 2341 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2342 | { |
0112cd26 NC |
2343 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2344 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2345 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2346 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2347 | }; |
2348 | ||
b35d266b | 2349 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2350 | { |
0112cd26 NC |
2351 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2352 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2353 | }; |
2354 | ||
b35d266b | 2355 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2356 | { |
0112cd26 NC |
2357 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2358 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2359 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2360 | }; |
2361 | ||
b35d266b | 2362 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2363 | { |
0112cd26 NC |
2364 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2365 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2366 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2367 | }; |
2368 | ||
b35d266b | 2369 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2370 | { |
0112cd26 NC |
2371 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2372 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2373 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2374 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2375 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2376 | }; |
2377 | ||
b35d266b | 2378 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2379 | { |
0112cd26 NC |
2380 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2381 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2382 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2383 | /* See struct bfd_elf_special_section declaration for the semantics of |
2384 | this special case where .prefix_length != strlen (.prefix). */ | |
2385 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2386 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2387 | }; |
2388 | ||
b35d266b | 2389 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2390 | { |
0112cd26 NC |
2391 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2392 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2393 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2394 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2395 | }; |
2396 | ||
b35d266b | 2397 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2398 | { |
7f4d3958 L |
2399 | special_sections_b, /* 'b' */ |
2400 | special_sections_c, /* 'b' */ | |
2401 | special_sections_d, /* 'd' */ | |
2402 | NULL, /* 'e' */ | |
2403 | special_sections_f, /* 'f' */ | |
2404 | special_sections_g, /* 'g' */ | |
2405 | special_sections_h, /* 'h' */ | |
2406 | special_sections_i, /* 'i' */ | |
2407 | NULL, /* 'j' */ | |
2408 | NULL, /* 'k' */ | |
2409 | special_sections_l, /* 'l' */ | |
2410 | NULL, /* 'm' */ | |
2411 | special_sections_n, /* 'n' */ | |
2412 | NULL, /* 'o' */ | |
2413 | special_sections_p, /* 'p' */ | |
2414 | NULL, /* 'q' */ | |
2415 | special_sections_r, /* 'r' */ | |
2416 | special_sections_s, /* 's' */ | |
2417 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2418 | }; |
2419 | ||
551b43fd AM |
2420 | const struct bfd_elf_special_section * |
2421 | _bfd_elf_get_special_section (const char *name, | |
2422 | const struct bfd_elf_special_section *spec, | |
2423 | unsigned int rela) | |
2f89ff8d L |
2424 | { |
2425 | int i; | |
7f4d3958 | 2426 | int len; |
7f4d3958 | 2427 | |
551b43fd | 2428 | len = strlen (name); |
7f4d3958 | 2429 | |
551b43fd | 2430 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2431 | { |
2432 | int suffix_len; | |
551b43fd | 2433 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2434 | |
2435 | if (len < prefix_len) | |
2436 | continue; | |
551b43fd | 2437 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2438 | continue; |
2439 | ||
551b43fd | 2440 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2441 | if (suffix_len <= 0) |
2442 | { | |
2443 | if (name[prefix_len] != 0) | |
2444 | { | |
2445 | if (suffix_len == 0) | |
2446 | continue; | |
2447 | if (name[prefix_len] != '.' | |
2448 | && (suffix_len == -2 | |
551b43fd | 2449 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2450 | continue; |
2451 | } | |
2452 | } | |
2453 | else | |
2454 | { | |
2455 | if (len < prefix_len + suffix_len) | |
2456 | continue; | |
2457 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2458 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2459 | suffix_len) != 0) |
2460 | continue; | |
2461 | } | |
551b43fd | 2462 | return &spec[i]; |
7dcb9820 | 2463 | } |
2f89ff8d L |
2464 | |
2465 | return NULL; | |
2466 | } | |
2467 | ||
7dcb9820 | 2468 | const struct bfd_elf_special_section * |
29ef7005 | 2469 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2470 | { |
551b43fd AM |
2471 | int i; |
2472 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2473 | const struct elf_backend_data *bed; |
2f89ff8d L |
2474 | |
2475 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2476 | if (sec->name == NULL) |
2477 | return NULL; | |
2f89ff8d | 2478 | |
29ef7005 L |
2479 | bed = get_elf_backend_data (abfd); |
2480 | spec = bed->special_sections; | |
2481 | if (spec) | |
2482 | { | |
2483 | spec = _bfd_elf_get_special_section (sec->name, | |
2484 | bed->special_sections, | |
2485 | sec->use_rela_p); | |
2486 | if (spec != NULL) | |
2487 | return spec; | |
2488 | } | |
2489 | ||
551b43fd AM |
2490 | if (sec->name[0] != '.') |
2491 | return NULL; | |
2f89ff8d | 2492 | |
551b43fd AM |
2493 | i = sec->name[1] - 'b'; |
2494 | if (i < 0 || i > 't' - 'b') | |
2495 | return NULL; | |
2496 | ||
2497 | spec = special_sections[i]; | |
2f89ff8d | 2498 | |
551b43fd AM |
2499 | if (spec == NULL) |
2500 | return NULL; | |
2501 | ||
2502 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2503 | } |
2504 | ||
b34976b6 | 2505 | bfd_boolean |
217aa764 | 2506 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2507 | { |
2508 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2509 | const struct elf_backend_data *bed; |
7dcb9820 | 2510 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2511 | |
f0abc2a1 AM |
2512 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2513 | if (sdata == NULL) | |
2514 | { | |
217aa764 | 2515 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2516 | if (sdata == NULL) |
2517 | return FALSE; | |
217aa764 | 2518 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2519 | } |
bf572ba0 | 2520 | |
551b43fd AM |
2521 | /* Indicate whether or not this section should use RELA relocations. */ |
2522 | bed = get_elf_backend_data (abfd); | |
2523 | sec->use_rela_p = bed->default_use_rela_p; | |
2524 | ||
e843e0f8 L |
2525 | /* When we read a file, we don't need to set ELF section type and |
2526 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2527 | anyway. We will set ELF section type and flags for all linker | |
2528 | created sections. If user specifies BFD section flags, we will | |
2529 | set ELF section type and flags based on BFD section flags in | |
2530 | elf_fake_sections. */ | |
2531 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2532 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2533 | { |
551b43fd | 2534 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2535 | if (ssect != NULL) |
2536 | { | |
2537 | elf_section_type (sec) = ssect->type; | |
2538 | elf_section_flags (sec) = ssect->attr; | |
2539 | } | |
2f89ff8d L |
2540 | } |
2541 | ||
f592407e | 2542 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2543 | } |
2544 | ||
2545 | /* Create a new bfd section from an ELF program header. | |
2546 | ||
2547 | Since program segments have no names, we generate a synthetic name | |
2548 | of the form segment<NUM>, where NUM is generally the index in the | |
2549 | program header table. For segments that are split (see below) we | |
2550 | generate the names segment<NUM>a and segment<NUM>b. | |
2551 | ||
2552 | Note that some program segments may have a file size that is different than | |
2553 | (less than) the memory size. All this means is that at execution the | |
2554 | system must allocate the amount of memory specified by the memory size, | |
2555 | but only initialize it with the first "file size" bytes read from the | |
2556 | file. This would occur for example, with program segments consisting | |
2557 | of combined data+bss. | |
2558 | ||
2559 | To handle the above situation, this routine generates TWO bfd sections | |
2560 | for the single program segment. The first has the length specified by | |
2561 | the file size of the segment, and the second has the length specified | |
2562 | by the difference between the two sizes. In effect, the segment is split | |
2563 | into it's initialized and uninitialized parts. | |
2564 | ||
2565 | */ | |
2566 | ||
b34976b6 | 2567 | bfd_boolean |
217aa764 AM |
2568 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2569 | Elf_Internal_Phdr *hdr, | |
2570 | int index, | |
2571 | const char *typename) | |
252b5132 RH |
2572 | { |
2573 | asection *newsect; | |
2574 | char *name; | |
2575 | char namebuf[64]; | |
d4c88bbb | 2576 | size_t len; |
252b5132 RH |
2577 | int split; |
2578 | ||
2579 | split = ((hdr->p_memsz > 0) | |
2580 | && (hdr->p_filesz > 0) | |
2581 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2582 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2583 | len = strlen (namebuf) + 1; |
217aa764 | 2584 | name = bfd_alloc (abfd, len); |
252b5132 | 2585 | if (!name) |
b34976b6 | 2586 | return FALSE; |
d4c88bbb | 2587 | memcpy (name, namebuf, len); |
252b5132 RH |
2588 | newsect = bfd_make_section (abfd, name); |
2589 | if (newsect == NULL) | |
b34976b6 | 2590 | return FALSE; |
252b5132 RH |
2591 | newsect->vma = hdr->p_vaddr; |
2592 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2593 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2594 | newsect->filepos = hdr->p_offset; |
2595 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2596 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2597 | if (hdr->p_type == PT_LOAD) |
2598 | { | |
2599 | newsect->flags |= SEC_ALLOC; | |
2600 | newsect->flags |= SEC_LOAD; | |
2601 | if (hdr->p_flags & PF_X) | |
2602 | { | |
2603 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2604 | may be data. */ |
252b5132 RH |
2605 | newsect->flags |= SEC_CODE; |
2606 | } | |
2607 | } | |
2608 | if (!(hdr->p_flags & PF_W)) | |
2609 | { | |
2610 | newsect->flags |= SEC_READONLY; | |
2611 | } | |
2612 | ||
2613 | if (split) | |
2614 | { | |
27ac83bf | 2615 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2616 | len = strlen (namebuf) + 1; |
217aa764 | 2617 | name = bfd_alloc (abfd, len); |
252b5132 | 2618 | if (!name) |
b34976b6 | 2619 | return FALSE; |
d4c88bbb | 2620 | memcpy (name, namebuf, len); |
252b5132 RH |
2621 | newsect = bfd_make_section (abfd, name); |
2622 | if (newsect == NULL) | |
b34976b6 | 2623 | return FALSE; |
252b5132 RH |
2624 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2625 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2626 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2627 | if (hdr->p_type == PT_LOAD) |
2628 | { | |
2629 | newsect->flags |= SEC_ALLOC; | |
2630 | if (hdr->p_flags & PF_X) | |
2631 | newsect->flags |= SEC_CODE; | |
2632 | } | |
2633 | if (!(hdr->p_flags & PF_W)) | |
2634 | newsect->flags |= SEC_READONLY; | |
2635 | } | |
2636 | ||
b34976b6 | 2637 | return TRUE; |
252b5132 RH |
2638 | } |
2639 | ||
b34976b6 | 2640 | bfd_boolean |
217aa764 | 2641 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2642 | { |
9c5bfbb7 | 2643 | const struct elf_backend_data *bed; |
20cfcaae NC |
2644 | |
2645 | switch (hdr->p_type) | |
2646 | { | |
2647 | case PT_NULL: | |
2648 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2649 | ||
2650 | case PT_LOAD: | |
2651 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2652 | ||
2653 | case PT_DYNAMIC: | |
2654 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2655 | ||
2656 | case PT_INTERP: | |
2657 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2658 | ||
2659 | case PT_NOTE: | |
2660 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2661 | return FALSE; |
217aa764 | 2662 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2663 | return FALSE; |
2664 | return TRUE; | |
20cfcaae NC |
2665 | |
2666 | case PT_SHLIB: | |
2667 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2668 | ||
2669 | case PT_PHDR: | |
2670 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2671 | ||
811072d8 RM |
2672 | case PT_GNU_EH_FRAME: |
2673 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2674 | "eh_frame_hdr"); | |
2675 | ||
9ee5e499 JJ |
2676 | case PT_GNU_STACK: |
2677 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2678 | ||
8c37241b JJ |
2679 | case PT_GNU_RELRO: |
2680 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2681 | ||
20cfcaae | 2682 | default: |
8c1acd09 | 2683 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2684 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2685 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2686 | } |
2687 | } | |
2688 | ||
23bc299b | 2689 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2690 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2691 | relocations; otherwise, we use REL relocations. */ |
2692 | ||
b34976b6 | 2693 | bfd_boolean |
217aa764 AM |
2694 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2695 | Elf_Internal_Shdr *rel_hdr, | |
2696 | asection *asect, | |
2697 | bfd_boolean use_rela_p) | |
23bc299b MM |
2698 | { |
2699 | char *name; | |
9c5bfbb7 | 2700 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2701 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2702 | |
dc810e39 | 2703 | name = bfd_alloc (abfd, amt); |
23bc299b | 2704 | if (name == NULL) |
b34976b6 | 2705 | return FALSE; |
23bc299b MM |
2706 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2707 | rel_hdr->sh_name = | |
2b0f7ef9 | 2708 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2709 | FALSE); |
23bc299b | 2710 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2711 | return FALSE; |
23bc299b MM |
2712 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2713 | rel_hdr->sh_entsize = (use_rela_p | |
2714 | ? bed->s->sizeof_rela | |
2715 | : bed->s->sizeof_rel); | |
45d6a902 | 2716 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2717 | rel_hdr->sh_flags = 0; |
2718 | rel_hdr->sh_addr = 0; | |
2719 | rel_hdr->sh_size = 0; | |
2720 | rel_hdr->sh_offset = 0; | |
2721 | ||
b34976b6 | 2722 | return TRUE; |
23bc299b MM |
2723 | } |
2724 | ||
252b5132 RH |
2725 | /* Set up an ELF internal section header for a section. */ |
2726 | ||
252b5132 | 2727 | static void |
217aa764 | 2728 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2729 | { |
9c5bfbb7 | 2730 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2731 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2732 | Elf_Internal_Shdr *this_hdr; |
2733 | ||
2734 | if (*failedptr) | |
2735 | { | |
2736 | /* We already failed; just get out of the bfd_map_over_sections | |
2737 | loop. */ | |
2738 | return; | |
2739 | } | |
2740 | ||
2741 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2742 | ||
e57b5356 AM |
2743 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2744 | asect->name, FALSE); | |
2745 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2746 | { |
b34976b6 | 2747 | *failedptr = TRUE; |
252b5132 RH |
2748 | return; |
2749 | } | |
2750 | ||
a4d8e49b | 2751 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2752 | |
2753 | if ((asect->flags & SEC_ALLOC) != 0 | |
2754 | || asect->user_set_vma) | |
2755 | this_hdr->sh_addr = asect->vma; | |
2756 | else | |
2757 | this_hdr->sh_addr = 0; | |
2758 | ||
2759 | this_hdr->sh_offset = 0; | |
eea6121a | 2760 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2761 | this_hdr->sh_link = 0; |
2762 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2763 | /* The sh_entsize and sh_info fields may have been set already by | |
2764 | copy_private_section_data. */ | |
2765 | ||
2766 | this_hdr->bfd_section = asect; | |
2767 | this_hdr->contents = NULL; | |
2768 | ||
3cddba1e L |
2769 | /* If the section type is unspecified, we set it based on |
2770 | asect->flags. */ | |
2771 | if (this_hdr->sh_type == SHT_NULL) | |
2772 | { | |
45c5e9ed | 2773 | if ((asect->flags & SEC_GROUP) != 0) |
ccd2ec6a | 2774 | this_hdr->sh_type = SHT_GROUP; |
45c5e9ed | 2775 | else if ((asect->flags & SEC_ALLOC) != 0 |
1ea63fd2 AM |
2776 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2777 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
3cddba1e L |
2778 | this_hdr->sh_type = SHT_NOBITS; |
2779 | else | |
2780 | this_hdr->sh_type = SHT_PROGBITS; | |
2781 | } | |
2782 | ||
2f89ff8d | 2783 | switch (this_hdr->sh_type) |
252b5132 | 2784 | { |
2f89ff8d | 2785 | default: |
2f89ff8d L |
2786 | break; |
2787 | ||
2788 | case SHT_STRTAB: | |
2789 | case SHT_INIT_ARRAY: | |
2790 | case SHT_FINI_ARRAY: | |
2791 | case SHT_PREINIT_ARRAY: | |
2792 | case SHT_NOTE: | |
2793 | case SHT_NOBITS: | |
2794 | case SHT_PROGBITS: | |
2795 | break; | |
2796 | ||
2797 | case SHT_HASH: | |
c7ac6ff8 | 2798 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2799 | break; |
5de3bf90 | 2800 | |
2f89ff8d | 2801 | case SHT_DYNSYM: |
252b5132 | 2802 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2803 | break; |
2804 | ||
2805 | case SHT_DYNAMIC: | |
252b5132 | 2806 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2807 | break; |
2808 | ||
2809 | case SHT_RELA: | |
2810 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2811 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2812 | break; | |
2813 | ||
2814 | case SHT_REL: | |
2815 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2816 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2817 | break; | |
2818 | ||
2819 | case SHT_GNU_versym: | |
252b5132 | 2820 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2821 | break; |
2822 | ||
2823 | case SHT_GNU_verdef: | |
252b5132 RH |
2824 | this_hdr->sh_entsize = 0; |
2825 | /* objcopy or strip will copy over sh_info, but may not set | |
2826 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2827 | zero. */ | |
2828 | if (this_hdr->sh_info == 0) | |
2829 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2830 | else | |
2831 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2832 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2833 | break; |
2834 | ||
2835 | case SHT_GNU_verneed: | |
252b5132 RH |
2836 | this_hdr->sh_entsize = 0; |
2837 | /* objcopy or strip will copy over sh_info, but may not set | |
2838 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2839 | zero. */ | |
2840 | if (this_hdr->sh_info == 0) | |
2841 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2842 | else | |
2843 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2844 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2845 | break; |
2846 | ||
2847 | case SHT_GROUP: | |
dbb410c3 | 2848 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2849 | break; |
fdc90cb4 JJ |
2850 | |
2851 | case SHT_GNU_HASH: | |
2852 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2853 | break; | |
dbb410c3 | 2854 | } |
252b5132 RH |
2855 | |
2856 | if ((asect->flags & SEC_ALLOC) != 0) | |
2857 | this_hdr->sh_flags |= SHF_ALLOC; | |
2858 | if ((asect->flags & SEC_READONLY) == 0) | |
2859 | this_hdr->sh_flags |= SHF_WRITE; | |
2860 | if ((asect->flags & SEC_CODE) != 0) | |
2861 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2862 | if ((asect->flags & SEC_MERGE) != 0) |
2863 | { | |
2864 | this_hdr->sh_flags |= SHF_MERGE; | |
2865 | this_hdr->sh_entsize = asect->entsize; | |
2866 | if ((asect->flags & SEC_STRINGS) != 0) | |
2867 | this_hdr->sh_flags |= SHF_STRINGS; | |
2868 | } | |
1126897b | 2869 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2870 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2871 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2872 | { |
2873 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2874 | if (asect->size == 0 |
2875 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2876 | { |
3a800eb9 | 2877 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2878 | |
704afa60 | 2879 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2880 | if (o != NULL) |
2881 | { | |
704afa60 | 2882 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2883 | if (this_hdr->sh_size != 0) |
2884 | this_hdr->sh_type = SHT_NOBITS; | |
2885 | } | |
704afa60 JJ |
2886 | } |
2887 | } | |
252b5132 RH |
2888 | |
2889 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2890 | if (bed->elf_backend_fake_sections |
2891 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2892 | *failedptr = TRUE; |
252b5132 RH |
2893 | |
2894 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2895 | SHT_REL[A] section. If two relocation sections are required for |
2896 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2897 | create the other. */ |
23bc299b | 2898 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2899 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2900 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2901 | asect, |
68bfbfcc | 2902 | asect->use_rela_p)) |
b34976b6 | 2903 | *failedptr = TRUE; |
252b5132 RH |
2904 | } |
2905 | ||
dbb410c3 AM |
2906 | /* Fill in the contents of a SHT_GROUP section. */ |
2907 | ||
1126897b | 2908 | void |
217aa764 | 2909 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2910 | { |
217aa764 | 2911 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2912 | unsigned long symindx; |
9dce4196 | 2913 | asection *elt, *first; |
dbb410c3 | 2914 | unsigned char *loc; |
b34976b6 | 2915 | bfd_boolean gas; |
dbb410c3 | 2916 | |
7e4111ad L |
2917 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2918 | elfxx-ia64.c. */ | |
2919 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2920 | || *failedptr) |
2921 | return; | |
2922 | ||
1126897b AM |
2923 | symindx = 0; |
2924 | if (elf_group_id (sec) != NULL) | |
2925 | symindx = elf_group_id (sec)->udata.i; | |
2926 | ||
2927 | if (symindx == 0) | |
2928 | { | |
2929 | /* If called from the assembler, swap_out_syms will have set up | |
2930 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2931 | if (elf_section_syms (abfd) != NULL) | |
2932 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2933 | else | |
2934 | symindx = sec->target_index; | |
2935 | } | |
dbb410c3 AM |
2936 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2937 | ||
1126897b | 2938 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2939 | gas = TRUE; |
dbb410c3 AM |
2940 | if (sec->contents == NULL) |
2941 | { | |
b34976b6 | 2942 | gas = FALSE; |
eea6121a | 2943 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2944 | |
2945 | /* Arrange for the section to be written out. */ | |
2946 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2947 | if (sec->contents == NULL) |
2948 | { | |
b34976b6 | 2949 | *failedptr = TRUE; |
dbb410c3 AM |
2950 | return; |
2951 | } | |
2952 | } | |
2953 | ||
eea6121a | 2954 | loc = sec->contents + sec->size; |
dbb410c3 | 2955 | |
9dce4196 AM |
2956 | /* Get the pointer to the first section in the group that gas |
2957 | squirreled away here. objcopy arranges for this to be set to the | |
2958 | start of the input section group. */ | |
2959 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2960 | |
2961 | /* First element is a flag word. Rest of section is elf section | |
2962 | indices for all the sections of the group. Write them backwards | |
2963 | just to keep the group in the same order as given in .section | |
2964 | directives, not that it matters. */ | |
2965 | while (elt != NULL) | |
2966 | { | |
9dce4196 AM |
2967 | asection *s; |
2968 | unsigned int idx; | |
2969 | ||
dbb410c3 | 2970 | loc -= 4; |
9dce4196 AM |
2971 | s = elt; |
2972 | if (!gas) | |
2973 | s = s->output_section; | |
2974 | idx = 0; | |
2975 | if (s != NULL) | |
2976 | idx = elf_section_data (s)->this_idx; | |
2977 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2978 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2979 | if (elt == first) |
2980 | break; | |
dbb410c3 AM |
2981 | } |
2982 | ||
3d7f7666 | 2983 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2984 | abort (); |
dbb410c3 | 2985 | |
9dce4196 | 2986 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2987 | } |
2988 | ||
252b5132 RH |
2989 | /* Assign all ELF section numbers. The dummy first section is handled here |
2990 | too. The link/info pointers for the standard section types are filled | |
2991 | in here too, while we're at it. */ | |
2992 | ||
b34976b6 | 2993 | static bfd_boolean |
da9f89d4 | 2994 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2995 | { |
2996 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2997 | asection *sec; | |
2b0f7ef9 | 2998 | unsigned int section_number, secn; |
252b5132 | 2999 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 3000 | struct bfd_elf_section_data *d; |
252b5132 RH |
3001 | |
3002 | section_number = 1; | |
3003 | ||
2b0f7ef9 JJ |
3004 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
3005 | ||
da9f89d4 L |
3006 | /* SHT_GROUP sections are in relocatable files only. */ |
3007 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 3008 | { |
da9f89d4 | 3009 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 3010 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 3011 | { |
5daa8fe7 | 3012 | d = elf_section_data (sec); |
da9f89d4 L |
3013 | |
3014 | if (d->this_hdr.sh_type == SHT_GROUP) | |
3015 | { | |
5daa8fe7 | 3016 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
3017 | { |
3018 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 3019 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 3020 | abfd->section_count--; |
da9f89d4 L |
3021 | } |
3022 | else | |
3023 | { | |
3024 | if (section_number == SHN_LORESERVE) | |
3025 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3026 | d->this_idx = section_number++; | |
3027 | } | |
3028 | } | |
47cc2cf5 PB |
3029 | } |
3030 | } | |
3031 | ||
3032 | for (sec = abfd->sections; sec; sec = sec->next) | |
3033 | { | |
3034 | d = elf_section_data (sec); | |
3035 | ||
3036 | if (d->this_hdr.sh_type != SHT_GROUP) | |
3037 | { | |
3038 | if (section_number == SHN_LORESERVE) | |
3039 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3040 | d->this_idx = section_number++; | |
3041 | } | |
2b0f7ef9 | 3042 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
3043 | if ((sec->flags & SEC_RELOC) == 0) |
3044 | d->rel_idx = 0; | |
3045 | else | |
2b0f7ef9 | 3046 | { |
9ad5cbcf AM |
3047 | if (section_number == SHN_LORESERVE) |
3048 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3049 | d->rel_idx = section_number++; |
3050 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
3051 | } | |
23bc299b MM |
3052 | |
3053 | if (d->rel_hdr2) | |
2b0f7ef9 | 3054 | { |
9ad5cbcf AM |
3055 | if (section_number == SHN_LORESERVE) |
3056 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3057 | d->rel_idx2 = section_number++; |
3058 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
3059 | } | |
23bc299b MM |
3060 | else |
3061 | d->rel_idx2 = 0; | |
252b5132 RH |
3062 | } |
3063 | ||
9ad5cbcf AM |
3064 | if (section_number == SHN_LORESERVE) |
3065 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3066 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 3067 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 3068 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
3069 | |
3070 | if (bfd_get_symcount (abfd) > 0) | |
3071 | { | |
9ad5cbcf AM |
3072 | if (section_number == SHN_LORESERVE) |
3073 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3074 | t->symtab_section = section_number++; |
2b0f7ef9 | 3075 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
3076 | if (section_number > SHN_LORESERVE - 2) |
3077 | { | |
3078 | if (section_number == SHN_LORESERVE) | |
3079 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3080 | t->symtab_shndx_section = section_number++; | |
3081 | t->symtab_shndx_hdr.sh_name | |
3082 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 3083 | ".symtab_shndx", FALSE); |
9ad5cbcf | 3084 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 3085 | return FALSE; |
9ad5cbcf AM |
3086 | } |
3087 | if (section_number == SHN_LORESERVE) | |
3088 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3089 | t->strtab_section = section_number++; |
2b0f7ef9 | 3090 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3091 | } |
3092 | ||
2b0f7ef9 JJ |
3093 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
3094 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
3095 | |
3096 | elf_numsections (abfd) = section_number; | |
252b5132 | 3097 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3098 | if (section_number > SHN_LORESERVE) |
3099 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3100 | |
3101 | /* Set up the list of section header pointers, in agreement with the | |
3102 | indices. */ | |
d0fb9a8d | 3103 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 3104 | if (i_shdrp == NULL) |
b34976b6 | 3105 | return FALSE; |
252b5132 | 3106 | |
d0fb9a8d | 3107 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3108 | if (i_shdrp[0] == NULL) |
3109 | { | |
3110 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3111 | return FALSE; |
252b5132 | 3112 | } |
252b5132 RH |
3113 | |
3114 | elf_elfsections (abfd) = i_shdrp; | |
3115 | ||
3116 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3117 | if (bfd_get_symcount (abfd) > 0) | |
3118 | { | |
3119 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3120 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3121 | { | |
3122 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3123 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3124 | } | |
252b5132 RH |
3125 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3126 | t->symtab_hdr.sh_link = t->strtab_section; | |
3127 | } | |
38ce5b11 | 3128 | |
252b5132 RH |
3129 | for (sec = abfd->sections; sec; sec = sec->next) |
3130 | { | |
3131 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3132 | asection *s; | |
3133 | const char *name; | |
3134 | ||
3135 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3136 | if (d->rel_idx != 0) | |
3137 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3138 | if (d->rel_idx2 != 0) |
3139 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3140 | |
3141 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3142 | ||
3143 | /* sh_link of a reloc section is the section index of the symbol | |
3144 | table. sh_info is the section index of the section to which | |
3145 | the relocation entries apply. */ | |
3146 | if (d->rel_idx != 0) | |
3147 | { | |
3148 | d->rel_hdr.sh_link = t->symtab_section; | |
3149 | d->rel_hdr.sh_info = d->this_idx; | |
3150 | } | |
23bc299b MM |
3151 | if (d->rel_idx2 != 0) |
3152 | { | |
3153 | d->rel_hdr2->sh_link = t->symtab_section; | |
3154 | d->rel_hdr2->sh_info = d->this_idx; | |
3155 | } | |
252b5132 | 3156 | |
38ce5b11 L |
3157 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3158 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3159 | { | |
3160 | s = elf_linked_to_section (sec); | |
3161 | if (s) | |
38ce5b11 | 3162 | { |
f2876037 | 3163 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3164 | if (link_info != NULL) |
38ce5b11 | 3165 | { |
f2876037 | 3166 | /* Check discarded linkonce section. */ |
ccd2ec6a | 3167 | if (elf_discarded_section (s)) |
38ce5b11 | 3168 | { |
ccd2ec6a L |
3169 | asection *kept; |
3170 | (*_bfd_error_handler) | |
3171 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3172 | abfd, d->this_hdr.bfd_section, | |
3173 | s, s->owner); | |
3174 | /* Point to the kept section if it has the same | |
3175 | size as the discarded one. */ | |
c0f00686 | 3176 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 3177 | if (kept == NULL) |
185d09ad | 3178 | { |
ccd2ec6a L |
3179 | bfd_set_error (bfd_error_bad_value); |
3180 | return FALSE; | |
185d09ad | 3181 | } |
ccd2ec6a | 3182 | s = kept; |
38ce5b11 | 3183 | } |
e424ecc8 | 3184 | |
ccd2ec6a L |
3185 | s = s->output_section; |
3186 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3187 | } |
f2876037 L |
3188 | else |
3189 | { | |
3190 | /* Handle objcopy. */ | |
3191 | if (s->output_section == NULL) | |
3192 | { | |
3193 | (*_bfd_error_handler) | |
3194 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3195 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3196 | bfd_set_error (bfd_error_bad_value); | |
3197 | return FALSE; | |
3198 | } | |
3199 | s = s->output_section; | |
3200 | } | |
ccd2ec6a L |
3201 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3202 | } | |
3203 | else | |
3204 | { | |
3205 | /* PR 290: | |
3206 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3207 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3208 | sh_info fields. Hence we could get the situation | |
3209 | where s is NULL. */ | |
3210 | const struct elf_backend_data *bed | |
3211 | = get_elf_backend_data (abfd); | |
3212 | if (bed->link_order_error_handler) | |
3213 | bed->link_order_error_handler | |
3214 | (_("%B: warning: sh_link not set for section `%A'"), | |
3215 | abfd, sec); | |
38ce5b11 L |
3216 | } |
3217 | } | |
3218 | ||
252b5132 RH |
3219 | switch (d->this_hdr.sh_type) |
3220 | { | |
3221 | case SHT_REL: | |
3222 | case SHT_RELA: | |
3223 | /* A reloc section which we are treating as a normal BFD | |
3224 | section. sh_link is the section index of the symbol | |
3225 | table. sh_info is the section index of the section to | |
3226 | which the relocation entries apply. We assume that an | |
3227 | allocated reloc section uses the dynamic symbol table. | |
3228 | FIXME: How can we be sure? */ | |
3229 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3230 | if (s != NULL) | |
3231 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3232 | ||
3233 | /* We look up the section the relocs apply to by name. */ | |
3234 | name = sec->name; | |
3235 | if (d->this_hdr.sh_type == SHT_REL) | |
3236 | name += 4; | |
3237 | else | |
3238 | name += 5; | |
3239 | s = bfd_get_section_by_name (abfd, name); | |
3240 | if (s != NULL) | |
3241 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3242 | break; | |
3243 | ||
3244 | case SHT_STRTAB: | |
3245 | /* We assume that a section named .stab*str is a stabs | |
3246 | string section. We look for a section with the same name | |
3247 | but without the trailing ``str'', and set its sh_link | |
3248 | field to point to this section. */ | |
0112cd26 | 3249 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3250 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3251 | { | |
3252 | size_t len; | |
3253 | char *alc; | |
3254 | ||
3255 | len = strlen (sec->name); | |
217aa764 | 3256 | alc = bfd_malloc (len - 2); |
252b5132 | 3257 | if (alc == NULL) |
b34976b6 | 3258 | return FALSE; |
d4c88bbb | 3259 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3260 | alc[len - 3] = '\0'; |
3261 | s = bfd_get_section_by_name (abfd, alc); | |
3262 | free (alc); | |
3263 | if (s != NULL) | |
3264 | { | |
3265 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3266 | ||
3267 | /* This is a .stab section. */ | |
0594c12d AM |
3268 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3269 | elf_section_data (s)->this_hdr.sh_entsize | |
3270 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3271 | } |
3272 | } | |
3273 | break; | |
3274 | ||
3275 | case SHT_DYNAMIC: | |
3276 | case SHT_DYNSYM: | |
3277 | case SHT_GNU_verneed: | |
3278 | case SHT_GNU_verdef: | |
3279 | /* sh_link is the section header index of the string table | |
3280 | used for the dynamic entries, or the symbol table, or the | |
3281 | version strings. */ | |
3282 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3283 | if (s != NULL) | |
3284 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3285 | break; | |
3286 | ||
7f1204bb JJ |
3287 | case SHT_GNU_LIBLIST: |
3288 | /* sh_link is the section header index of the prelink library | |
3289 | list | |
3290 | used for the dynamic entries, or the symbol table, or the | |
3291 | version strings. */ | |
3292 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3293 | ? ".dynstr" : ".gnu.libstr"); | |
3294 | if (s != NULL) | |
3295 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3296 | break; | |
3297 | ||
252b5132 | 3298 | case SHT_HASH: |
fdc90cb4 | 3299 | case SHT_GNU_HASH: |
252b5132 RH |
3300 | case SHT_GNU_versym: |
3301 | /* sh_link is the section header index of the symbol table | |
3302 | this hash table or version table is for. */ | |
3303 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3304 | if (s != NULL) | |
3305 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3306 | break; | |
dbb410c3 AM |
3307 | |
3308 | case SHT_GROUP: | |
3309 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3310 | } |
3311 | } | |
3312 | ||
2b0f7ef9 | 3313 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3314 | if (i_shdrp[secn] == NULL) |
3315 | i_shdrp[secn] = i_shdrp[0]; | |
3316 | else | |
3317 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3318 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3319 | return TRUE; |
252b5132 RH |
3320 | } |
3321 | ||
3322 | /* Map symbol from it's internal number to the external number, moving | |
3323 | all local symbols to be at the head of the list. */ | |
3324 | ||
5372391b | 3325 | static bfd_boolean |
217aa764 | 3326 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3327 | { |
3328 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3329 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3330 | if (bed->elf_backend_sym_is_global) |
3331 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3332 | |
3333 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3334 | || bfd_is_und_section (bfd_get_section (sym)) | |
3335 | || bfd_is_com_section (bfd_get_section (sym))); | |
3336 | } | |
3337 | ||
5372391b AM |
3338 | /* Don't output section symbols for sections that are not going to be |
3339 | output. Also, don't output section symbols for reloc and other | |
3340 | special sections. */ | |
3341 | ||
3342 | static bfd_boolean | |
3343 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3344 | { | |
3345 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3346 | && (sym->value != 0 | |
3347 | || (sym->section->owner != abfd | |
3348 | && (sym->section->output_section->owner != abfd | |
3349 | || sym->section->output_offset != 0)))); | |
3350 | } | |
3351 | ||
b34976b6 | 3352 | static bfd_boolean |
217aa764 | 3353 | elf_map_symbols (bfd *abfd) |
252b5132 | 3354 | { |
dc810e39 | 3355 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3356 | asymbol **syms = bfd_get_outsymbols (abfd); |
3357 | asymbol **sect_syms; | |
dc810e39 AM |
3358 | unsigned int num_locals = 0; |
3359 | unsigned int num_globals = 0; | |
3360 | unsigned int num_locals2 = 0; | |
3361 | unsigned int num_globals2 = 0; | |
252b5132 | 3362 | int max_index = 0; |
dc810e39 | 3363 | unsigned int idx; |
252b5132 RH |
3364 | asection *asect; |
3365 | asymbol **new_syms; | |
252b5132 RH |
3366 | |
3367 | #ifdef DEBUG | |
3368 | fprintf (stderr, "elf_map_symbols\n"); | |
3369 | fflush (stderr); | |
3370 | #endif | |
3371 | ||
252b5132 RH |
3372 | for (asect = abfd->sections; asect; asect = asect->next) |
3373 | { | |
3374 | if (max_index < asect->index) | |
3375 | max_index = asect->index; | |
3376 | } | |
3377 | ||
3378 | max_index++; | |
d0fb9a8d | 3379 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3380 | if (sect_syms == NULL) |
b34976b6 | 3381 | return FALSE; |
252b5132 | 3382 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3383 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3384 | |
079e9a2f AM |
3385 | /* Init sect_syms entries for any section symbols we have already |
3386 | decided to output. */ | |
252b5132 RH |
3387 | for (idx = 0; idx < symcount; idx++) |
3388 | { | |
dc810e39 | 3389 | asymbol *sym = syms[idx]; |
c044fabd | 3390 | |
252b5132 | 3391 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3392 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3393 | { |
5372391b | 3394 | asection *sec = sym->section; |
252b5132 | 3395 | |
5372391b AM |
3396 | if (sec->owner != abfd) |
3397 | sec = sec->output_section; | |
252b5132 | 3398 | |
5372391b | 3399 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3400 | } |
3401 | } | |
3402 | ||
252b5132 RH |
3403 | /* Classify all of the symbols. */ |
3404 | for (idx = 0; idx < symcount; idx++) | |
3405 | { | |
5372391b AM |
3406 | if (ignore_section_sym (abfd, syms[idx])) |
3407 | continue; | |
252b5132 RH |
3408 | if (!sym_is_global (abfd, syms[idx])) |
3409 | num_locals++; | |
3410 | else | |
3411 | num_globals++; | |
3412 | } | |
079e9a2f | 3413 | |
5372391b | 3414 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3415 | sections will already have a section symbol in outsymbols, but |
3416 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3417 | at least in that case. */ | |
252b5132 RH |
3418 | for (asect = abfd->sections; asect; asect = asect->next) |
3419 | { | |
079e9a2f | 3420 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3421 | { |
079e9a2f | 3422 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3423 | num_locals++; |
3424 | else | |
3425 | num_globals++; | |
252b5132 RH |
3426 | } |
3427 | } | |
3428 | ||
3429 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3430 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3431 | |
252b5132 | 3432 | if (new_syms == NULL) |
b34976b6 | 3433 | return FALSE; |
252b5132 RH |
3434 | |
3435 | for (idx = 0; idx < symcount; idx++) | |
3436 | { | |
3437 | asymbol *sym = syms[idx]; | |
dc810e39 | 3438 | unsigned int i; |
252b5132 | 3439 | |
5372391b AM |
3440 | if (ignore_section_sym (abfd, sym)) |
3441 | continue; | |
252b5132 RH |
3442 | if (!sym_is_global (abfd, sym)) |
3443 | i = num_locals2++; | |
3444 | else | |
3445 | i = num_locals + num_globals2++; | |
3446 | new_syms[i] = sym; | |
3447 | sym->udata.i = i + 1; | |
3448 | } | |
3449 | for (asect = abfd->sections; asect; asect = asect->next) | |
3450 | { | |
079e9a2f | 3451 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3452 | { |
079e9a2f | 3453 | asymbol *sym = asect->symbol; |
dc810e39 | 3454 | unsigned int i; |
252b5132 | 3455 | |
079e9a2f | 3456 | sect_syms[asect->index] = sym; |
252b5132 RH |
3457 | if (!sym_is_global (abfd, sym)) |
3458 | i = num_locals2++; | |
3459 | else | |
3460 | i = num_locals + num_globals2++; | |
3461 | new_syms[i] = sym; | |
3462 | sym->udata.i = i + 1; | |
3463 | } | |
3464 | } | |
3465 | ||
3466 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3467 | ||
3468 | elf_num_locals (abfd) = num_locals; | |
3469 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3470 | return TRUE; |
252b5132 RH |
3471 | } |
3472 | ||
3473 | /* Align to the maximum file alignment that could be required for any | |
3474 | ELF data structure. */ | |
3475 | ||
268b6b39 | 3476 | static inline file_ptr |
217aa764 | 3477 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3478 | { |
3479 | return (off + align - 1) & ~(align - 1); | |
3480 | } | |
3481 | ||
3482 | /* Assign a file position to a section, optionally aligning to the | |
3483 | required section alignment. */ | |
3484 | ||
217aa764 AM |
3485 | file_ptr |
3486 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3487 | file_ptr offset, | |
3488 | bfd_boolean align) | |
252b5132 RH |
3489 | { |
3490 | if (align) | |
3491 | { | |
3492 | unsigned int al; | |
3493 | ||
3494 | al = i_shdrp->sh_addralign; | |
3495 | if (al > 1) | |
3496 | offset = BFD_ALIGN (offset, al); | |
3497 | } | |
3498 | i_shdrp->sh_offset = offset; | |
3499 | if (i_shdrp->bfd_section != NULL) | |
3500 | i_shdrp->bfd_section->filepos = offset; | |
3501 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3502 | offset += i_shdrp->sh_size; | |
3503 | return offset; | |
3504 | } | |
3505 | ||
3506 | /* Compute the file positions we are going to put the sections at, and | |
3507 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3508 | is not NULL, this is being called by the ELF backend linker. */ | |
3509 | ||
b34976b6 | 3510 | bfd_boolean |
217aa764 AM |
3511 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3512 | struct bfd_link_info *link_info) | |
252b5132 | 3513 | { |
9c5bfbb7 | 3514 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3515 | bfd_boolean failed; |
4b6c0f2f | 3516 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3517 | Elf_Internal_Shdr *shstrtab_hdr; |
3518 | ||
3519 | if (abfd->output_has_begun) | |
b34976b6 | 3520 | return TRUE; |
252b5132 RH |
3521 | |
3522 | /* Do any elf backend specific processing first. */ | |
3523 | if (bed->elf_backend_begin_write_processing) | |
3524 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3525 | ||
3526 | if (! prep_headers (abfd)) | |
b34976b6 | 3527 | return FALSE; |
252b5132 | 3528 | |
e6c51ed4 NC |
3529 | /* Post process the headers if necessary. */ |
3530 | if (bed->elf_backend_post_process_headers) | |
3531 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3532 | ||
b34976b6 | 3533 | failed = FALSE; |
252b5132 RH |
3534 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3535 | if (failed) | |
b34976b6 | 3536 | return FALSE; |
252b5132 | 3537 | |
da9f89d4 | 3538 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3539 | return FALSE; |
252b5132 RH |
3540 | |
3541 | /* The backend linker builds symbol table information itself. */ | |
3542 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3543 | { | |
3544 | /* Non-zero if doing a relocatable link. */ | |
3545 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3546 | ||
3547 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3548 | return FALSE; |
252b5132 RH |
3549 | } |
3550 | ||
1126897b | 3551 | if (link_info == NULL) |
dbb410c3 | 3552 | { |
1126897b | 3553 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3554 | if (failed) |
b34976b6 | 3555 | return FALSE; |
dbb410c3 AM |
3556 | } |
3557 | ||
252b5132 RH |
3558 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3559 | /* sh_name was set in prep_headers. */ | |
3560 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3561 | shstrtab_hdr->sh_flags = 0; | |
3562 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3563 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3564 | shstrtab_hdr->sh_entsize = 0; |
3565 | shstrtab_hdr->sh_link = 0; | |
3566 | shstrtab_hdr->sh_info = 0; | |
3567 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3568 | shstrtab_hdr->sh_addralign = 1; | |
3569 | ||
c84fca4d | 3570 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3571 | return FALSE; |
252b5132 RH |
3572 | |
3573 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3574 | { | |
3575 | file_ptr off; | |
3576 | Elf_Internal_Shdr *hdr; | |
3577 | ||
3578 | off = elf_tdata (abfd)->next_file_pos; | |
3579 | ||
3580 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3581 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3582 | |
9ad5cbcf AM |
3583 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3584 | if (hdr->sh_size != 0) | |
b34976b6 | 3585 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3586 | |
252b5132 | 3587 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3588 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3589 | |
3590 | elf_tdata (abfd)->next_file_pos = off; | |
3591 | ||
3592 | /* Now that we know where the .strtab section goes, write it | |
3593 | out. */ | |
3594 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3595 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3596 | return FALSE; |
252b5132 RH |
3597 | _bfd_stringtab_free (strtab); |
3598 | } | |
3599 | ||
b34976b6 | 3600 | abfd->output_has_begun = TRUE; |
252b5132 | 3601 | |
b34976b6 | 3602 | return TRUE; |
252b5132 RH |
3603 | } |
3604 | ||
8ded5a0f AM |
3605 | /* Make an initial estimate of the size of the program header. If we |
3606 | get the number wrong here, we'll redo section placement. */ | |
3607 | ||
3608 | static bfd_size_type | |
3609 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3610 | { | |
3611 | size_t segs; | |
3612 | asection *s; | |
3613 | const struct elf_backend_data *bed; | |
3614 | ||
3615 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3616 | and one for data. */ | |
3617 | segs = 2; | |
3618 | ||
3619 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3620 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3621 | { | |
3622 | /* If we have a loadable interpreter section, we need a | |
3623 | PT_INTERP segment. In this case, assume we also need a | |
3624 | PT_PHDR segment, although that may not be true for all | |
3625 | targets. */ | |
3626 | segs += 2; | |
3627 | } | |
3628 | ||
3629 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3630 | { | |
3631 | /* We need a PT_DYNAMIC segment. */ | |
3632 | ++segs; | |
c9df6640 L |
3633 | |
3634 | if (elf_tdata (abfd)->relro) | |
3635 | { | |
3636 | /* We need a PT_GNU_RELRO segment only when there is a | |
3637 | PT_DYNAMIC segment. */ | |
3638 | ++segs; | |
3639 | } | |
8ded5a0f AM |
3640 | } |
3641 | ||
3642 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3643 | { | |
3644 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3645 | ++segs; | |
3646 | } | |
3647 | ||
3648 | if (elf_tdata (abfd)->stack_flags) | |
3649 | { | |
3650 | /* We need a PT_GNU_STACK segment. */ | |
3651 | ++segs; | |
3652 | } | |
3653 | ||
8ded5a0f AM |
3654 | for (s = abfd->sections; s != NULL; s = s->next) |
3655 | { | |
3656 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3657 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3658 | { |
3659 | /* We need a PT_NOTE segment. */ | |
3660 | ++segs; | |
3661 | } | |
3662 | } | |
3663 | ||
3664 | for (s = abfd->sections; s != NULL; s = s->next) | |
3665 | { | |
3666 | if (s->flags & SEC_THREAD_LOCAL) | |
3667 | { | |
3668 | /* We need a PT_TLS segment. */ | |
3669 | ++segs; | |
3670 | break; | |
3671 | } | |
3672 | } | |
3673 | ||
3674 | /* Let the backend count up any program headers it might need. */ | |
3675 | bed = get_elf_backend_data (abfd); | |
3676 | if (bed->elf_backend_additional_program_headers) | |
3677 | { | |
3678 | int a; | |
3679 | ||
3680 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3681 | if (a == -1) | |
3682 | abort (); | |
3683 | segs += a; | |
3684 | } | |
3685 | ||
3686 | return segs * bed->s->sizeof_phdr; | |
3687 | } | |
3688 | ||
252b5132 RH |
3689 | /* Create a mapping from a set of sections to a program segment. */ |
3690 | ||
217aa764 AM |
3691 | static struct elf_segment_map * |
3692 | make_mapping (bfd *abfd, | |
3693 | asection **sections, | |
3694 | unsigned int from, | |
3695 | unsigned int to, | |
3696 | bfd_boolean phdr) | |
252b5132 RH |
3697 | { |
3698 | struct elf_segment_map *m; | |
3699 | unsigned int i; | |
3700 | asection **hdrpp; | |
dc810e39 | 3701 | bfd_size_type amt; |
252b5132 | 3702 | |
dc810e39 AM |
3703 | amt = sizeof (struct elf_segment_map); |
3704 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3705 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3706 | if (m == NULL) |
3707 | return NULL; | |
3708 | m->next = NULL; | |
3709 | m->p_type = PT_LOAD; | |
3710 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3711 | m->sections[i - from] = *hdrpp; | |
3712 | m->count = to - from; | |
3713 | ||
3714 | if (from == 0 && phdr) | |
3715 | { | |
3716 | /* Include the headers in the first PT_LOAD segment. */ | |
3717 | m->includes_filehdr = 1; | |
3718 | m->includes_phdrs = 1; | |
3719 | } | |
3720 | ||
3721 | return m; | |
3722 | } | |
3723 | ||
229fcec5 MM |
3724 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3725 | on failure. */ | |
3726 | ||
3727 | struct elf_segment_map * | |
3728 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3729 | { | |
3730 | struct elf_segment_map *m; | |
3731 | ||
3732 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3733 | if (m == NULL) | |
3734 | return NULL; | |
3735 | m->next = NULL; | |
3736 | m->p_type = PT_DYNAMIC; | |
3737 | m->count = 1; | |
3738 | m->sections[0] = dynsec; | |
3739 | ||
3740 | return m; | |
3741 | } | |
3742 | ||
8ded5a0f | 3743 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3744 | |
b34976b6 | 3745 | static bfd_boolean |
8ded5a0f | 3746 | elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3747 | { |
252e386e | 3748 | struct elf_segment_map **m; |
8ded5a0f | 3749 | const struct elf_backend_data *bed; |
252b5132 | 3750 | |
8ded5a0f AM |
3751 | /* The placement algorithm assumes that non allocated sections are |
3752 | not in PT_LOAD segments. We ensure this here by removing such | |
3753 | sections from the segment map. We also remove excluded | |
252e386e AM |
3754 | sections. Finally, any PT_LOAD segment without sections is |
3755 | removed. */ | |
3756 | m = &elf_tdata (abfd)->segment_map; | |
3757 | while (*m) | |
8ded5a0f AM |
3758 | { |
3759 | unsigned int i, new_count; | |
252b5132 | 3760 | |
252e386e | 3761 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3762 | { |
252e386e AM |
3763 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3764 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3765 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3766 | { |
252e386e AM |
3767 | (*m)->sections[new_count] = (*m)->sections[i]; |
3768 | new_count++; | |
8ded5a0f AM |
3769 | } |
3770 | } | |
252e386e | 3771 | (*m)->count = new_count; |
252b5132 | 3772 | |
252e386e AM |
3773 | if ((*m)->p_type == PT_LOAD && (*m)->count == 0) |
3774 | *m = (*m)->next; | |
3775 | else | |
3776 | m = &(*m)->next; | |
8ded5a0f | 3777 | } |
252b5132 | 3778 | |
8ded5a0f AM |
3779 | bed = get_elf_backend_data (abfd); |
3780 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3781 | { |
252e386e | 3782 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3783 | return FALSE; |
252b5132 | 3784 | } |
252b5132 | 3785 | |
8ded5a0f AM |
3786 | return TRUE; |
3787 | } | |
252b5132 | 3788 | |
8ded5a0f | 3789 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3790 | |
8ded5a0f AM |
3791 | bfd_boolean |
3792 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3793 | { | |
3794 | unsigned int count; | |
3795 | struct elf_segment_map *m; | |
3796 | asection **sections = NULL; | |
3797 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 3798 | |
8ded5a0f AM |
3799 | if (elf_tdata (abfd)->segment_map == NULL |
3800 | && bfd_count_sections (abfd) != 0) | |
252b5132 | 3801 | { |
8ded5a0f AM |
3802 | asection *s; |
3803 | unsigned int i; | |
3804 | struct elf_segment_map *mfirst; | |
3805 | struct elf_segment_map **pm; | |
3806 | asection *last_hdr; | |
3807 | bfd_vma last_size; | |
3808 | unsigned int phdr_index; | |
3809 | bfd_vma maxpagesize; | |
3810 | asection **hdrpp; | |
3811 | bfd_boolean phdr_in_segment = TRUE; | |
3812 | bfd_boolean writable; | |
3813 | int tls_count = 0; | |
3814 | asection *first_tls = NULL; | |
3815 | asection *dynsec, *eh_frame_hdr; | |
3816 | bfd_size_type amt; | |
252b5132 | 3817 | |
8ded5a0f | 3818 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3819 | |
8ded5a0f AM |
3820 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3821 | if (sections == NULL) | |
252b5132 | 3822 | goto error_return; |
252b5132 | 3823 | |
8ded5a0f AM |
3824 | i = 0; |
3825 | for (s = abfd->sections; s != NULL; s = s->next) | |
3826 | { | |
3827 | if ((s->flags & SEC_ALLOC) != 0) | |
3828 | { | |
3829 | sections[i] = s; | |
3830 | ++i; | |
3831 | } | |
3832 | } | |
3833 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3834 | count = i; | |
252b5132 | 3835 | |
8ded5a0f | 3836 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3837 | |
8ded5a0f | 3838 | /* Build the mapping. */ |
252b5132 | 3839 | |
8ded5a0f AM |
3840 | mfirst = NULL; |
3841 | pm = &mfirst; | |
252b5132 | 3842 | |
8ded5a0f AM |
3843 | /* If we have a .interp section, then create a PT_PHDR segment for |
3844 | the program headers and a PT_INTERP segment for the .interp | |
3845 | section. */ | |
3846 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3847 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3848 | { | |
3849 | amt = sizeof (struct elf_segment_map); | |
3850 | m = bfd_zalloc (abfd, amt); | |
3851 | if (m == NULL) | |
3852 | goto error_return; | |
3853 | m->next = NULL; | |
3854 | m->p_type = PT_PHDR; | |
3855 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3856 | m->p_flags = PF_R | PF_X; | |
3857 | m->p_flags_valid = 1; | |
3858 | m->includes_phdrs = 1; | |
252b5132 | 3859 | |
8ded5a0f AM |
3860 | *pm = m; |
3861 | pm = &m->next; | |
252b5132 | 3862 | |
8ded5a0f AM |
3863 | amt = sizeof (struct elf_segment_map); |
3864 | m = bfd_zalloc (abfd, amt); | |
3865 | if (m == NULL) | |
3866 | goto error_return; | |
3867 | m->next = NULL; | |
3868 | m->p_type = PT_INTERP; | |
3869 | m->count = 1; | |
3870 | m->sections[0] = s; | |
3871 | ||
3872 | *pm = m; | |
3873 | pm = &m->next; | |
252b5132 | 3874 | } |
8ded5a0f AM |
3875 | |
3876 | /* Look through the sections. We put sections in the same program | |
3877 | segment when the start of the second section can be placed within | |
3878 | a few bytes of the end of the first section. */ | |
3879 | last_hdr = NULL; | |
3880 | last_size = 0; | |
3881 | phdr_index = 0; | |
3882 | maxpagesize = bed->maxpagesize; | |
3883 | writable = FALSE; | |
3884 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3885 | if (dynsec != NULL | |
3886 | && (dynsec->flags & SEC_LOAD) == 0) | |
3887 | dynsec = NULL; | |
3888 | ||
3889 | /* Deal with -Ttext or something similar such that the first section | |
3890 | is not adjacent to the program headers. This is an | |
3891 | approximation, since at this point we don't know exactly how many | |
3892 | program headers we will need. */ | |
3893 | if (count > 0) | |
252b5132 | 3894 | { |
8ded5a0f AM |
3895 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3896 | ||
62d7a5f6 | 3897 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3898 | phdr_size = get_program_header_size (abfd, info); |
3899 | if ((abfd->flags & D_PAGED) == 0 | |
3900 | || sections[0]->lma < phdr_size | |
3901 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3902 | phdr_in_segment = FALSE; | |
252b5132 RH |
3903 | } |
3904 | ||
8ded5a0f | 3905 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3906 | { |
8ded5a0f AM |
3907 | asection *hdr; |
3908 | bfd_boolean new_segment; | |
3909 | ||
3910 | hdr = *hdrpp; | |
3911 | ||
3912 | /* See if this section and the last one will fit in the same | |
3913 | segment. */ | |
3914 | ||
3915 | if (last_hdr == NULL) | |
3916 | { | |
3917 | /* If we don't have a segment yet, then we don't need a new | |
3918 | one (we build the last one after this loop). */ | |
3919 | new_segment = FALSE; | |
3920 | } | |
3921 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3922 | { | |
3923 | /* If this section has a different relation between the | |
3924 | virtual address and the load address, then we need a new | |
3925 | segment. */ | |
3926 | new_segment = TRUE; | |
3927 | } | |
3928 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3929 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3930 | { | |
3931 | /* If putting this section in this segment would force us to | |
3932 | skip a page in the segment, then we need a new segment. */ | |
3933 | new_segment = TRUE; | |
3934 | } | |
3935 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3936 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3937 | { | |
3938 | /* We don't want to put a loadable section after a | |
3939 | nonloadable section in the same segment. | |
3940 | Consider .tbss sections as loadable for this purpose. */ | |
3941 | new_segment = TRUE; | |
3942 | } | |
3943 | else if ((abfd->flags & D_PAGED) == 0) | |
3944 | { | |
3945 | /* If the file is not demand paged, which means that we | |
3946 | don't require the sections to be correctly aligned in the | |
3947 | file, then there is no other reason for a new segment. */ | |
3948 | new_segment = FALSE; | |
3949 | } | |
3950 | else if (! writable | |
3951 | && (hdr->flags & SEC_READONLY) == 0 | |
3952 | && (((last_hdr->lma + last_size - 1) | |
3953 | & ~(maxpagesize - 1)) | |
3954 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3955 | { | |
3956 | /* We don't want to put a writable section in a read only | |
3957 | segment, unless they are on the same page in memory | |
3958 | anyhow. We already know that the last section does not | |
3959 | bring us past the current section on the page, so the | |
3960 | only case in which the new section is not on the same | |
3961 | page as the previous section is when the previous section | |
3962 | ends precisely on a page boundary. */ | |
3963 | new_segment = TRUE; | |
3964 | } | |
3965 | else | |
3966 | { | |
3967 | /* Otherwise, we can use the same segment. */ | |
3968 | new_segment = FALSE; | |
3969 | } | |
3970 | ||
3971 | if (! new_segment) | |
3972 | { | |
3973 | if ((hdr->flags & SEC_READONLY) == 0) | |
3974 | writable = TRUE; | |
3975 | last_hdr = hdr; | |
3976 | /* .tbss sections effectively have zero size. */ | |
3977 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3978 | != SEC_THREAD_LOCAL) | |
3979 | last_size = hdr->size; | |
3980 | else | |
3981 | last_size = 0; | |
3982 | continue; | |
3983 | } | |
3984 | ||
3985 | /* We need a new program segment. We must create a new program | |
3986 | header holding all the sections from phdr_index until hdr. */ | |
3987 | ||
3988 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3989 | if (m == NULL) | |
3990 | goto error_return; | |
3991 | ||
3992 | *pm = m; | |
3993 | pm = &m->next; | |
3994 | ||
252b5132 | 3995 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3996 | writable = TRUE; |
8ded5a0f AM |
3997 | else |
3998 | writable = FALSE; | |
3999 | ||
baaff79e JJ |
4000 | last_hdr = hdr; |
4001 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 4002 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 4003 | last_size = hdr->size; |
baaff79e JJ |
4004 | else |
4005 | last_size = 0; | |
8ded5a0f AM |
4006 | phdr_index = i; |
4007 | phdr_in_segment = FALSE; | |
252b5132 RH |
4008 | } |
4009 | ||
8ded5a0f AM |
4010 | /* Create a final PT_LOAD program segment. */ |
4011 | if (last_hdr != NULL) | |
4012 | { | |
4013 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4014 | if (m == NULL) | |
4015 | goto error_return; | |
252b5132 | 4016 | |
8ded5a0f AM |
4017 | *pm = m; |
4018 | pm = &m->next; | |
4019 | } | |
252b5132 | 4020 | |
8ded5a0f AM |
4021 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
4022 | if (dynsec != NULL) | |
4023 | { | |
4024 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
4025 | if (m == NULL) | |
4026 | goto error_return; | |
4027 | *pm = m; | |
4028 | pm = &m->next; | |
4029 | } | |
252b5132 | 4030 | |
8ded5a0f AM |
4031 | /* For each loadable .note section, add a PT_NOTE segment. We don't |
4032 | use bfd_get_section_by_name, because if we link together | |
4033 | nonloadable .note sections and loadable .note sections, we will | |
4034 | generate two .note sections in the output file. FIXME: Using | |
4035 | names for section types is bogus anyhow. */ | |
4036 | for (s = abfd->sections; s != NULL; s = s->next) | |
4037 | { | |
4038 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 4039 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
4040 | { |
4041 | amt = sizeof (struct elf_segment_map); | |
4042 | m = bfd_zalloc (abfd, amt); | |
4043 | if (m == NULL) | |
4044 | goto error_return; | |
4045 | m->next = NULL; | |
4046 | m->p_type = PT_NOTE; | |
4047 | m->count = 1; | |
4048 | m->sections[0] = s; | |
252b5132 | 4049 | |
8ded5a0f AM |
4050 | *pm = m; |
4051 | pm = &m->next; | |
4052 | } | |
4053 | if (s->flags & SEC_THREAD_LOCAL) | |
4054 | { | |
4055 | if (! tls_count) | |
4056 | first_tls = s; | |
4057 | tls_count++; | |
4058 | } | |
4059 | } | |
252b5132 | 4060 | |
8ded5a0f AM |
4061 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
4062 | if (tls_count > 0) | |
4063 | { | |
4064 | int i; | |
252b5132 | 4065 | |
8ded5a0f AM |
4066 | amt = sizeof (struct elf_segment_map); |
4067 | amt += (tls_count - 1) * sizeof (asection *); | |
4068 | m = bfd_zalloc (abfd, amt); | |
4069 | if (m == NULL) | |
4070 | goto error_return; | |
4071 | m->next = NULL; | |
4072 | m->p_type = PT_TLS; | |
4073 | m->count = tls_count; | |
4074 | /* Mandated PF_R. */ | |
4075 | m->p_flags = PF_R; | |
4076 | m->p_flags_valid = 1; | |
4077 | for (i = 0; i < tls_count; ++i) | |
4078 | { | |
4079 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
4080 | m->sections[i] = first_tls; | |
4081 | first_tls = first_tls->next; | |
4082 | } | |
252b5132 | 4083 | |
8ded5a0f AM |
4084 | *pm = m; |
4085 | pm = &m->next; | |
4086 | } | |
252b5132 | 4087 | |
8ded5a0f AM |
4088 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
4089 | segment. */ | |
4090 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
4091 | if (eh_frame_hdr != NULL | |
4092 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 4093 | { |
dc810e39 | 4094 | amt = sizeof (struct elf_segment_map); |
217aa764 | 4095 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
4096 | if (m == NULL) |
4097 | goto error_return; | |
4098 | m->next = NULL; | |
8ded5a0f | 4099 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 4100 | m->count = 1; |
8ded5a0f | 4101 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
4102 | |
4103 | *pm = m; | |
4104 | pm = &m->next; | |
4105 | } | |
13ae64f3 | 4106 | |
8ded5a0f | 4107 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 4108 | { |
8ded5a0f AM |
4109 | amt = sizeof (struct elf_segment_map); |
4110 | m = bfd_zalloc (abfd, amt); | |
4111 | if (m == NULL) | |
4112 | goto error_return; | |
4113 | m->next = NULL; | |
4114 | m->p_type = PT_GNU_STACK; | |
4115 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
4116 | m->p_flags_valid = 1; | |
252b5132 | 4117 | |
8ded5a0f AM |
4118 | *pm = m; |
4119 | pm = &m->next; | |
4120 | } | |
65765700 | 4121 | |
c9df6640 | 4122 | if (dynsec != NULL && elf_tdata (abfd)->relro) |
8ded5a0f | 4123 | { |
c9df6640 L |
4124 | /* We make a PT_GNU_RELRO segment only when there is a |
4125 | PT_DYNAMIC segment. */ | |
8ded5a0f AM |
4126 | amt = sizeof (struct elf_segment_map); |
4127 | m = bfd_zalloc (abfd, amt); | |
4128 | if (m == NULL) | |
4129 | goto error_return; | |
4130 | m->next = NULL; | |
4131 | m->p_type = PT_GNU_RELRO; | |
4132 | m->p_flags = PF_R; | |
4133 | m->p_flags_valid = 1; | |
65765700 | 4134 | |
8ded5a0f AM |
4135 | *pm = m; |
4136 | pm = &m->next; | |
4137 | } | |
9ee5e499 | 4138 | |
8ded5a0f AM |
4139 | free (sections); |
4140 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
4141 | } |
4142 | ||
8ded5a0f AM |
4143 | if (!elf_modify_segment_map (abfd, info)) |
4144 | return FALSE; | |
8c37241b | 4145 | |
8ded5a0f AM |
4146 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4147 | ++count; | |
4148 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 4149 | |
b34976b6 | 4150 | return TRUE; |
252b5132 RH |
4151 | |
4152 | error_return: | |
4153 | if (sections != NULL) | |
4154 | free (sections); | |
b34976b6 | 4155 | return FALSE; |
252b5132 RH |
4156 | } |
4157 | ||
4158 | /* Sort sections by address. */ | |
4159 | ||
4160 | static int | |
217aa764 | 4161 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4162 | { |
4163 | const asection *sec1 = *(const asection **) arg1; | |
4164 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4165 | bfd_size_type size1, size2; |
252b5132 RH |
4166 | |
4167 | /* Sort by LMA first, since this is the address used to | |
4168 | place the section into a segment. */ | |
4169 | if (sec1->lma < sec2->lma) | |
4170 | return -1; | |
4171 | else if (sec1->lma > sec2->lma) | |
4172 | return 1; | |
4173 | ||
4174 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4175 | the same, and this will do nothing. */ | |
4176 | if (sec1->vma < sec2->vma) | |
4177 | return -1; | |
4178 | else if (sec1->vma > sec2->vma) | |
4179 | return 1; | |
4180 | ||
4181 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4182 | ||
07c6e936 | 4183 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4184 | |
4185 | if (TOEND (sec1)) | |
4186 | { | |
4187 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4188 | { |
4189 | /* If the indicies are the same, do not return 0 | |
4190 | here, but continue to try the next comparison. */ | |
4191 | if (sec1->target_index - sec2->target_index != 0) | |
4192 | return sec1->target_index - sec2->target_index; | |
4193 | } | |
252b5132 RH |
4194 | else |
4195 | return 1; | |
4196 | } | |
00a7cdc5 | 4197 | else if (TOEND (sec2)) |
252b5132 RH |
4198 | return -1; |
4199 | ||
4200 | #undef TOEND | |
4201 | ||
00a7cdc5 NC |
4202 | /* Sort by size, to put zero sized sections |
4203 | before others at the same address. */ | |
252b5132 | 4204 | |
eea6121a AM |
4205 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4206 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4207 | |
4208 | if (size1 < size2) | |
252b5132 | 4209 | return -1; |
eecdbe52 | 4210 | if (size1 > size2) |
252b5132 RH |
4211 | return 1; |
4212 | ||
4213 | return sec1->target_index - sec2->target_index; | |
4214 | } | |
4215 | ||
340b6d91 AC |
4216 | /* Ian Lance Taylor writes: |
4217 | ||
4218 | We shouldn't be using % with a negative signed number. That's just | |
4219 | not good. We have to make sure either that the number is not | |
4220 | negative, or that the number has an unsigned type. When the types | |
4221 | are all the same size they wind up as unsigned. When file_ptr is a | |
4222 | larger signed type, the arithmetic winds up as signed long long, | |
4223 | which is wrong. | |
4224 | ||
4225 | What we're trying to say here is something like ``increase OFF by | |
4226 | the least amount that will cause it to be equal to the VMA modulo | |
4227 | the page size.'' */ | |
4228 | /* In other words, something like: | |
4229 | ||
4230 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4231 | off_offset = off % bed->maxpagesize; | |
4232 | if (vma_offset < off_offset) | |
4233 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4234 | else | |
4235 | adjustment = vma_offset - off_offset; | |
4236 | ||
4237 | which can can be collapsed into the expression below. */ | |
4238 | ||
4239 | static file_ptr | |
4240 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4241 | { | |
4242 | return ((vma - off) % maxpagesize); | |
4243 | } | |
4244 | ||
252b5132 RH |
4245 | /* Assign file positions to the sections based on the mapping from |
4246 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4247 | the file header. */ |
252b5132 | 4248 | |
b34976b6 | 4249 | static bfd_boolean |
f3520d2f AM |
4250 | assign_file_positions_for_load_sections (bfd *abfd, |
4251 | struct bfd_link_info *link_info) | |
252b5132 RH |
4252 | { |
4253 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4254 | struct elf_segment_map *m; |
252b5132 | 4255 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4256 | Elf_Internal_Phdr *p; |
f3520d2f | 4257 | file_ptr off, voff; |
3f570048 | 4258 | bfd_size_type maxpagesize; |
f3520d2f | 4259 | unsigned int alloc; |
5c182d5f | 4260 | unsigned int i; |
252b5132 | 4261 | |
e36284ab AM |
4262 | if (link_info == NULL |
4263 | && !elf_modify_segment_map (abfd, link_info)) | |
8ded5a0f | 4264 | return FALSE; |
252b5132 | 4265 | |
8ded5a0f | 4266 | alloc = 0; |
252b5132 | 4267 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4268 | ++alloc; |
252b5132 RH |
4269 | |
4270 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4271 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4272 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4273 | |
62d7a5f6 | 4274 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4275 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4276 | else | |
4277 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
4278 | == alloc * bed->s->sizeof_phdr); | |
252b5132 RH |
4279 | |
4280 | if (alloc == 0) | |
f3520d2f | 4281 | { |
8ded5a0f AM |
4282 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4283 | return TRUE; | |
f3520d2f | 4284 | } |
252b5132 | 4285 | |
d0fb9a8d | 4286 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4287 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4288 | if (phdrs == NULL) |
b34976b6 | 4289 | return FALSE; |
252b5132 | 4290 | |
3f570048 AM |
4291 | maxpagesize = 1; |
4292 | if ((abfd->flags & D_PAGED) != 0) | |
4293 | maxpagesize = bed->maxpagesize; | |
4294 | ||
252b5132 RH |
4295 | off = bed->s->sizeof_ehdr; |
4296 | off += alloc * bed->s->sizeof_phdr; | |
4297 | ||
252b5132 RH |
4298 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4299 | m != NULL; | |
4300 | m = m->next, p++) | |
4301 | { | |
252b5132 RH |
4302 | asection **secpp; |
4303 | ||
4304 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4305 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4306 | not be done to the PT_NOTE section of a corefile, which may |
4307 | contain several pseudo-sections artificially created by bfd. | |
4308 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4309 | if (m->count > 1 |
4310 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4311 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4312 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4313 | elf_sort_sections); | |
4314 | ||
b301b248 AM |
4315 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4316 | number of sections with contents contributing to both p_filesz | |
4317 | and p_memsz, followed by a number of sections with no contents | |
4318 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4319 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4320 | an adjustment we use for segments that have no file contents | |
4321 | but need zero filled memory allocation. */ | |
4322 | voff = 0; | |
252b5132 | 4323 | p->p_type = m->p_type; |
28a7f3e7 | 4324 | p->p_flags = m->p_flags; |
252b5132 | 4325 | |
3f570048 AM |
4326 | if (m->count == 0) |
4327 | p->p_vaddr = 0; | |
4328 | else | |
4329 | p->p_vaddr = m->sections[0]->vma; | |
4330 | ||
4331 | if (m->p_paddr_valid) | |
4332 | p->p_paddr = m->p_paddr; | |
4333 | else if (m->count == 0) | |
4334 | p->p_paddr = 0; | |
4335 | else | |
4336 | p->p_paddr = m->sections[0]->lma; | |
4337 | ||
4338 | if (p->p_type == PT_LOAD | |
4339 | && (abfd->flags & D_PAGED) != 0) | |
4340 | { | |
4341 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4342 | the maximum page size. When copying an executable with | |
4343 | objcopy, we set m->p_align from the input file. Use this | |
4344 | value for maxpagesize rather than bed->maxpagesize, which | |
4345 | may be different. Note that we use maxpagesize for PT_TLS | |
4346 | segment alignment later in this function, so we are relying | |
4347 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4348 | segment. */ | |
4349 | if (m->p_align_valid) | |
4350 | maxpagesize = m->p_align; | |
4351 | ||
4352 | p->p_align = maxpagesize; | |
4353 | } | |
4354 | else if (m->count == 0) | |
4355 | p->p_align = 1 << bed->s->log_file_align; | |
4356 | else | |
4357 | p->p_align = 0; | |
4358 | ||
252b5132 | 4359 | if (p->p_type == PT_LOAD |
b301b248 | 4360 | && m->count > 0) |
252b5132 | 4361 | { |
b301b248 AM |
4362 | bfd_size_type align; |
4363 | bfd_vma adjust; | |
a49e53ed | 4364 | unsigned int align_power = 0; |
b301b248 | 4365 | |
a49e53ed | 4366 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
252b5132 | 4367 | { |
a49e53ed | 4368 | unsigned int secalign; |
252b5132 | 4369 | |
a49e53ed AM |
4370 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4371 | if (secalign > align_power) | |
4372 | align_power = secalign; | |
b301b248 | 4373 | } |
a49e53ed AM |
4374 | align = (bfd_size_type) 1 << align_power; |
4375 | ||
3f570048 AM |
4376 | if (align < maxpagesize) |
4377 | align = maxpagesize; | |
252b5132 | 4378 | |
b301b248 AM |
4379 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4380 | off += adjust; | |
4381 | if (adjust != 0 | |
4382 | && !m->includes_filehdr | |
4383 | && !m->includes_phdrs | |
4384 | && (ufile_ptr) off >= align) | |
4385 | { | |
4386 | /* If the first section isn't loadable, the same holds for | |
4387 | any other sections. Since the segment won't need file | |
4388 | space, we can make p_offset overlap some prior segment. | |
4389 | However, .tbss is special. If a segment starts with | |
4390 | .tbss, we need to look at the next section to decide | |
4391 | whether the segment has any loadable sections. */ | |
4392 | i = 0; | |
252e386e AM |
4393 | while ((m->sections[i]->flags & SEC_LOAD) == 0 |
4394 | && (m->sections[i]->flags & SEC_HAS_CONTENTS) == 0) | |
b301b248 AM |
4395 | { |
4396 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4397 | || ++i >= m->count) | |
4398 | { | |
4399 | off -= adjust; | |
4400 | voff = adjust - align; | |
4401 | break; | |
4402 | } | |
4403 | } | |
252b5132 RH |
4404 | } |
4405 | } | |
b1a6d0b1 NC |
4406 | /* Make sure the .dynamic section is the first section in the |
4407 | PT_DYNAMIC segment. */ | |
4408 | else if (p->p_type == PT_DYNAMIC | |
4409 | && m->count > 1 | |
4410 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4411 | { | |
4412 | _bfd_error_handler | |
b301b248 AM |
4413 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4414 | abfd); | |
b1a6d0b1 NC |
4415 | bfd_set_error (bfd_error_bad_value); |
4416 | return FALSE; | |
4417 | } | |
252b5132 | 4418 | |
252b5132 RH |
4419 | p->p_offset = 0; |
4420 | p->p_filesz = 0; | |
4421 | p->p_memsz = 0; | |
4422 | ||
4423 | if (m->includes_filehdr) | |
4424 | { | |
4425 | if (! m->p_flags_valid) | |
4426 | p->p_flags |= PF_R; | |
4427 | p->p_offset = 0; | |
4428 | p->p_filesz = bed->s->sizeof_ehdr; | |
4429 | p->p_memsz = bed->s->sizeof_ehdr; | |
4430 | if (m->count > 0) | |
4431 | { | |
4432 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4433 | ||
4434 | if (p->p_vaddr < (bfd_vma) off) | |
4435 | { | |
caf47ea6 | 4436 | (*_bfd_error_handler) |
b301b248 AM |
4437 | (_("%B: Not enough room for program headers, try linking with -N"), |
4438 | abfd); | |
252b5132 | 4439 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4440 | return FALSE; |
252b5132 RH |
4441 | } |
4442 | ||
4443 | p->p_vaddr -= off; | |
4444 | if (! m->p_paddr_valid) | |
4445 | p->p_paddr -= off; | |
4446 | } | |
252b5132 RH |
4447 | } |
4448 | ||
4449 | if (m->includes_phdrs) | |
4450 | { | |
4451 | if (! m->p_flags_valid) | |
4452 | p->p_flags |= PF_R; | |
4453 | ||
f3520d2f | 4454 | if (!m->includes_filehdr) |
252b5132 RH |
4455 | { |
4456 | p->p_offset = bed->s->sizeof_ehdr; | |
4457 | ||
4458 | if (m->count > 0) | |
4459 | { | |
4460 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4461 | p->p_vaddr -= off - p->p_offset; | |
4462 | if (! m->p_paddr_valid) | |
4463 | p->p_paddr -= off - p->p_offset; | |
4464 | } | |
252b5132 RH |
4465 | } |
4466 | ||
4467 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4468 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4469 | } | |
4470 | ||
4471 | if (p->p_type == PT_LOAD | |
4472 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4473 | { | |
4474 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4475 | p->p_offset = off + voff; |
252b5132 RH |
4476 | else |
4477 | { | |
4478 | file_ptr adjust; | |
4479 | ||
4480 | adjust = off - (p->p_offset + p->p_filesz); | |
4481 | p->p_filesz += adjust; | |
4482 | p->p_memsz += adjust; | |
4483 | } | |
4484 | } | |
4485 | ||
1ea63fd2 AM |
4486 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4487 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4488 | core files, for sections in PT_NOTE segments. | |
4489 | assign_file_positions_for_non_load_sections will set filepos | |
4490 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4491 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4492 | { | |
4493 | asection *sec; | |
4494 | flagword flags; | |
4495 | bfd_size_type align; | |
4496 | ||
4497 | sec = *secpp; | |
4498 | flags = sec->flags; | |
3f570048 | 4499 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4500 | |
b301b248 AM |
4501 | if (p->p_type == PT_LOAD |
4502 | || p->p_type == PT_TLS) | |
252b5132 RH |
4503 | { |
4504 | bfd_signed_vma adjust; | |
4505 | ||
5efb6261 | 4506 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4507 | { |
b301b248 | 4508 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4509 | if (adjust < 0) |
b301b248 AM |
4510 | { |
4511 | (*_bfd_error_handler) | |
4512 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4513 | abfd, sec, (unsigned long) sec->lma); | |
4514 | adjust = 0; | |
4515 | } | |
4516 | off += adjust; | |
4517 | p->p_filesz += adjust; | |
4518 | p->p_memsz += adjust; | |
252b5132 | 4519 | } |
b301b248 AM |
4520 | /* .tbss is special. It doesn't contribute to p_memsz of |
4521 | normal segments. */ | |
1ea63fd2 AM |
4522 | else if ((flags & SEC_ALLOC) != 0 |
4523 | && ((flags & SEC_THREAD_LOCAL) == 0 | |
4524 | || p->p_type == PT_TLS)) | |
252b5132 RH |
4525 | { |
4526 | /* The section VMA must equal the file position | |
b301b248 AM |
4527 | modulo the page size. */ |
4528 | bfd_size_type page = align; | |
3f570048 AM |
4529 | if (page < maxpagesize) |
4530 | page = maxpagesize; | |
b301b248 AM |
4531 | adjust = vma_page_aligned_bias (sec->vma, |
4532 | p->p_vaddr + p->p_memsz, | |
4533 | page); | |
252b5132 | 4534 | p->p_memsz += adjust; |
252b5132 | 4535 | } |
252b5132 RH |
4536 | } |
4537 | ||
4538 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4539 | { | |
b301b248 AM |
4540 | /* The section at i == 0 is the one that actually contains |
4541 | everything. */ | |
4a938328 MS |
4542 | if (i == 0) |
4543 | { | |
252b5132 | 4544 | sec->filepos = off; |
eea6121a | 4545 | off += sec->size; |
b301b248 AM |
4546 | p->p_filesz = sec->size; |
4547 | p->p_memsz = 0; | |
4548 | p->p_align = 1; | |
252b5132 | 4549 | } |
4a938328 | 4550 | else |
252b5132 | 4551 | { |
b301b248 | 4552 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4553 | sec->filepos = 0; |
eea6121a | 4554 | sec->size = 0; |
b301b248 AM |
4555 | sec->flags = 0; |
4556 | continue; | |
252b5132 | 4557 | } |
252b5132 RH |
4558 | } |
4559 | else | |
4560 | { | |
b301b248 AM |
4561 | if (p->p_type == PT_LOAD) |
4562 | { | |
252e386e | 4563 | sec->filepos = off + voff; |
5efb6261 AM |
4564 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4565 | 1997, and the exact reason for it isn't clear. One | |
4566 | plausible explanation is that it is to work around | |
4567 | a problem we have with linker scripts using data | |
4568 | statements in NOLOAD sections. I don't think it | |
4569 | makes a great deal of sense to have such a section | |
4570 | assigned to a PT_LOAD segment, but apparently | |
4571 | people do this. The data statement results in a | |
4572 | bfd_data_link_order being built, and these need | |
4573 | section contents to write into. Eventually, we get | |
4574 | to _bfd_elf_write_object_contents which writes any | |
4575 | section with contents to the output. Make room | |
4576 | here for the write, so that following segments are | |
4577 | not trashed. */ | |
4578 | if ((flags & SEC_LOAD) != 0 | |
4579 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4580 | off += sec->size; |
4581 | } | |
252b5132 | 4582 | |
5efb6261 | 4583 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4584 | { |
4585 | p->p_filesz += sec->size; | |
4586 | p->p_memsz += sec->size; | |
4587 | } | |
4b6c0f2f | 4588 | |
b301b248 AM |
4589 | /* .tbss is special. It doesn't contribute to p_memsz of |
4590 | normal segments. */ | |
1ea63fd2 AM |
4591 | else if ((flags & SEC_ALLOC) != 0 |
4592 | && ((flags & SEC_THREAD_LOCAL) == 0 | |
4593 | || p->p_type == PT_TLS)) | |
b301b248 | 4594 | p->p_memsz += sec->size; |
252b5132 | 4595 | |
13ae64f3 | 4596 | if (p->p_type == PT_TLS |
eea6121a | 4597 | && sec->size == 0 |
13ae64f3 JJ |
4598 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4599 | { | |
3a800eb9 AM |
4600 | struct bfd_link_order *o = sec->map_tail.link_order; |
4601 | if (o != NULL) | |
4602 | p->p_memsz += o->offset + o->size; | |
13ae64f3 JJ |
4603 | } |
4604 | ||
c9df6640 L |
4605 | if (p->p_type == PT_GNU_RELRO) |
4606 | p->p_align = 1; | |
4607 | else if (align > p->p_align | |
4608 | && (p->p_type != PT_LOAD | |
4609 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4610 | p->p_align = align; |
4611 | } | |
4612 | ||
4613 | if (! m->p_flags_valid) | |
4614 | { | |
4615 | p->p_flags |= PF_R; | |
4616 | if ((flags & SEC_CODE) != 0) | |
4617 | p->p_flags |= PF_X; | |
4618 | if ((flags & SEC_READONLY) == 0) | |
4619 | p->p_flags |= PF_W; | |
4620 | } | |
4621 | } | |
4622 | } | |
4623 | ||
f3520d2f AM |
4624 | elf_tdata (abfd)->next_file_pos = off; |
4625 | return TRUE; | |
4626 | } | |
4627 | ||
4628 | /* Assign file positions for the other sections. */ | |
4629 | ||
4630 | static bfd_boolean | |
4631 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4632 | struct bfd_link_info *link_info) | |
4633 | { | |
4634 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4635 | Elf_Internal_Shdr **i_shdrpp; | |
4636 | Elf_Internal_Shdr **hdrpp; | |
4637 | Elf_Internal_Phdr *phdrs; | |
4638 | Elf_Internal_Phdr *p; | |
4639 | struct elf_segment_map *m; | |
4640 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4641 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4642 | file_ptr off; | |
4643 | unsigned int num_sec; | |
4644 | unsigned int i; | |
4645 | unsigned int count; | |
4646 | ||
5c182d5f AM |
4647 | i_shdrpp = elf_elfsections (abfd); |
4648 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4649 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4650 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4651 | { | |
4652 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4653 | Elf_Internal_Shdr *hdr; | |
4654 | ||
4655 | hdr = *hdrpp; | |
4656 | if (hdr->bfd_section != NULL | |
252e386e AM |
4657 | && (hdr->bfd_section->filepos != 0 |
4658 | || (hdr->sh_type == SHT_NOBITS | |
4659 | && hdr->contents == NULL))) | |
5c182d5f AM |
4660 | hdr->sh_offset = hdr->bfd_section->filepos; |
4661 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4662 | { | |
49c13adb L |
4663 | if (hdr->sh_size != 0) |
4664 | ((*_bfd_error_handler) | |
4665 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4666 | abfd, |
4667 | (hdr->bfd_section == NULL | |
4668 | ? "*unknown*" | |
4669 | : hdr->bfd_section->name))); | |
4670 | /* We don't need to page align empty sections. */ | |
4671 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4672 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4673 | bed->maxpagesize); | |
4674 | else | |
4675 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4676 | hdr->sh_addralign); | |
4677 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4678 | FALSE); | |
4679 | } | |
4680 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4681 | && hdr->bfd_section == NULL) | |
4682 | || hdr == i_shdrpp[tdata->symtab_section] | |
4683 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4684 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4685 | hdr->sh_offset = -1; | |
4686 | else | |
4687 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4688 | ||
4689 | if (i == SHN_LORESERVE - 1) | |
4690 | { | |
4691 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4692 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4693 | } | |
4694 | } | |
4695 | ||
252b5132 RH |
4696 | /* Now that we have set the section file positions, we can set up |
4697 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4698 | count = 0; |
4699 | filehdr_vaddr = 0; | |
4700 | filehdr_paddr = 0; | |
4701 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4702 | phdrs_paddr = 0; | |
4703 | phdrs = elf_tdata (abfd)->phdr; | |
4704 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4705 | m != NULL; | |
4706 | m = m->next, p++) | |
4707 | { | |
4708 | ++count; | |
4709 | if (p->p_type != PT_LOAD) | |
4710 | continue; | |
4711 | ||
4712 | if (m->includes_filehdr) | |
4713 | { | |
4714 | filehdr_vaddr = p->p_vaddr; | |
4715 | filehdr_paddr = p->p_paddr; | |
4716 | } | |
4717 | if (m->includes_phdrs) | |
4718 | { | |
4719 | phdrs_vaddr = p->p_vaddr; | |
4720 | phdrs_paddr = p->p_paddr; | |
4721 | if (m->includes_filehdr) | |
4722 | { | |
4723 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4724 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4725 | } | |
4726 | } | |
4727 | } | |
4728 | ||
252b5132 RH |
4729 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4730 | m != NULL; | |
4731 | m = m->next, p++) | |
4732 | { | |
1ea63fd2 | 4733 | if (m->count != 0) |
252b5132 | 4734 | { |
1ea63fd2 AM |
4735 | if (p->p_type != PT_LOAD |
4736 | && (p->p_type != PT_NOTE || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4737 | { |
1ea63fd2 AM |
4738 | Elf_Internal_Shdr *hdr; |
4739 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4740 | ||
4741 | hdr = &elf_section_data (m->sections[m->count - 1])->this_hdr; | |
4742 | p->p_filesz = (m->sections[m->count - 1]->filepos | |
4743 | - m->sections[0]->filepos); | |
4744 | if (hdr->sh_type != SHT_NOBITS) | |
4745 | p->p_filesz += hdr->sh_size; | |
4746 | ||
4747 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4748 | } |
252b5132 | 4749 | } |
1ea63fd2 | 4750 | else |
252b5132 RH |
4751 | { |
4752 | if (m->includes_filehdr) | |
4753 | { | |
4754 | p->p_vaddr = filehdr_vaddr; | |
4755 | if (! m->p_paddr_valid) | |
4756 | p->p_paddr = filehdr_paddr; | |
4757 | } | |
4758 | else if (m->includes_phdrs) | |
4759 | { | |
4760 | p->p_vaddr = phdrs_vaddr; | |
4761 | if (! m->p_paddr_valid) | |
4762 | p->p_paddr = phdrs_paddr; | |
4763 | } | |
8c37241b JJ |
4764 | else if (p->p_type == PT_GNU_RELRO) |
4765 | { | |
4766 | Elf_Internal_Phdr *lp; | |
4767 | ||
4768 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4769 | { | |
4770 | if (lp->p_type == PT_LOAD | |
4771 | && lp->p_vaddr <= link_info->relro_end | |
4772 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4773 | && (lp->p_vaddr + lp->p_filesz |
4774 | >= link_info->relro_end)) | |
8c37241b JJ |
4775 | break; |
4776 | } | |
4777 | ||
4778 | if (lp < phdrs + count | |
4779 | && link_info->relro_end > lp->p_vaddr) | |
4780 | { | |
4781 | p->p_vaddr = lp->p_vaddr; | |
4782 | p->p_paddr = lp->p_paddr; | |
4783 | p->p_offset = lp->p_offset; | |
4784 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4785 | p->p_memsz = p->p_filesz; | |
4786 | p->p_align = 1; | |
4787 | p->p_flags = (lp->p_flags & ~PF_W); | |
4788 | } | |
4789 | else | |
4790 | { | |
4791 | memset (p, 0, sizeof *p); | |
4792 | p->p_type = PT_NULL; | |
4793 | } | |
4794 | } | |
252b5132 RH |
4795 | } |
4796 | } | |
4797 | ||
252b5132 RH |
4798 | elf_tdata (abfd)->next_file_pos = off; |
4799 | ||
b34976b6 | 4800 | return TRUE; |
252b5132 RH |
4801 | } |
4802 | ||
252b5132 RH |
4803 | /* Work out the file positions of all the sections. This is called by |
4804 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4805 | VMAs must be known before this is called. | |
4806 | ||
e0638f70 AM |
4807 | Reloc sections come in two flavours: Those processed specially as |
4808 | "side-channel" data attached to a section to which they apply, and | |
4809 | those that bfd doesn't process as relocations. The latter sort are | |
4810 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4811 | consider the former sort here, unless they form part of the loadable | |
4812 | image. Reloc sections not assigned here will be handled later by | |
4813 | assign_file_positions_for_relocs. | |
252b5132 RH |
4814 | |
4815 | We also don't set the positions of the .symtab and .strtab here. */ | |
4816 | ||
b34976b6 | 4817 | static bfd_boolean |
c84fca4d AO |
4818 | assign_file_positions_except_relocs (bfd *abfd, |
4819 | struct bfd_link_info *link_info) | |
252b5132 | 4820 | { |
5c182d5f AM |
4821 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4822 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4823 | file_ptr off; |
9c5bfbb7 | 4824 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4825 | |
4826 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4827 | && bfd_get_format (abfd) != bfd_core) | |
4828 | { | |
5c182d5f AM |
4829 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4830 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4831 | Elf_Internal_Shdr **hdrpp; |
4832 | unsigned int i; | |
4833 | ||
4834 | /* Start after the ELF header. */ | |
4835 | off = i_ehdrp->e_ehsize; | |
4836 | ||
4837 | /* We are not creating an executable, which means that we are | |
4838 | not creating a program header, and that the actual order of | |
4839 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4840 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4841 | { |
4842 | Elf_Internal_Shdr *hdr; | |
4843 | ||
4844 | hdr = *hdrpp; | |
e0638f70 AM |
4845 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4846 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4847 | || i == tdata->symtab_section |
4848 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4849 | || i == tdata->strtab_section) |
4850 | { | |
4851 | hdr->sh_offset = -1; | |
252b5132 | 4852 | } |
9ad5cbcf | 4853 | else |
b34976b6 | 4854 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4855 | |
9ad5cbcf AM |
4856 | if (i == SHN_LORESERVE - 1) |
4857 | { | |
4858 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4859 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4860 | } | |
252b5132 RH |
4861 | } |
4862 | } | |
4863 | else | |
4864 | { | |
f3520d2f AM |
4865 | unsigned int alloc; |
4866 | ||
252b5132 RH |
4867 | /* Assign file positions for the loaded sections based on the |
4868 | assignment of sections to segments. */ | |
f3520d2f AM |
4869 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4870 | return FALSE; | |
4871 | ||
4872 | /* And for non-load sections. */ | |
4873 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4874 | return FALSE; | |
4875 | ||
e36284ab AM |
4876 | if (bed->elf_backend_modify_program_headers != NULL) |
4877 | { | |
4878 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4879 | return FALSE; | |
4880 | } | |
4881 | ||
f3520d2f AM |
4882 | /* Write out the program headers. */ |
4883 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4884 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4885 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4886 | return FALSE; |
252b5132 | 4887 | |
5c182d5f | 4888 | off = tdata->next_file_pos; |
252b5132 RH |
4889 | } |
4890 | ||
4891 | /* Place the section headers. */ | |
45d6a902 | 4892 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4893 | i_ehdrp->e_shoff = off; |
4894 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4895 | ||
5c182d5f | 4896 | tdata->next_file_pos = off; |
252b5132 | 4897 | |
b34976b6 | 4898 | return TRUE; |
252b5132 RH |
4899 | } |
4900 | ||
b34976b6 | 4901 | static bfd_boolean |
217aa764 | 4902 | prep_headers (bfd *abfd) |
252b5132 RH |
4903 | { |
4904 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4905 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4906 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4907 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4908 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4909 | |
4910 | i_ehdrp = elf_elfheader (abfd); | |
4911 | i_shdrp = elf_elfsections (abfd); | |
4912 | ||
2b0f7ef9 | 4913 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4914 | if (shstrtab == NULL) |
b34976b6 | 4915 | return FALSE; |
252b5132 RH |
4916 | |
4917 | elf_shstrtab (abfd) = shstrtab; | |
4918 | ||
4919 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4920 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4921 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4922 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4923 | ||
4924 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4925 | i_ehdrp->e_ident[EI_DATA] = | |
4926 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4927 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4928 | ||
252b5132 RH |
4929 | if ((abfd->flags & DYNAMIC) != 0) |
4930 | i_ehdrp->e_type = ET_DYN; | |
4931 | else if ((abfd->flags & EXEC_P) != 0) | |
4932 | i_ehdrp->e_type = ET_EXEC; | |
4933 | else if (bfd_get_format (abfd) == bfd_core) | |
4934 | i_ehdrp->e_type = ET_CORE; | |
4935 | else | |
4936 | i_ehdrp->e_type = ET_REL; | |
4937 | ||
4938 | switch (bfd_get_arch (abfd)) | |
4939 | { | |
4940 | case bfd_arch_unknown: | |
4941 | i_ehdrp->e_machine = EM_NONE; | |
4942 | break; | |
aa4f99bb AO |
4943 | |
4944 | /* There used to be a long list of cases here, each one setting | |
4945 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4946 | in the corresponding bfd definition. To avoid duplication, | |
4947 | the switch was removed. Machines that need special handling | |
4948 | can generally do it in elf_backend_final_write_processing(), | |
4949 | unless they need the information earlier than the final write. | |
4950 | Such need can generally be supplied by replacing the tests for | |
4951 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4952 | default: |
9c5bfbb7 AM |
4953 | i_ehdrp->e_machine = bed->elf_machine_code; |
4954 | } | |
aa4f99bb | 4955 | |
252b5132 RH |
4956 | i_ehdrp->e_version = bed->s->ev_current; |
4957 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4958 | ||
c044fabd | 4959 | /* No program header, for now. */ |
252b5132 RH |
4960 | i_ehdrp->e_phoff = 0; |
4961 | i_ehdrp->e_phentsize = 0; | |
4962 | i_ehdrp->e_phnum = 0; | |
4963 | ||
c044fabd | 4964 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4965 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4966 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4967 | ||
c044fabd | 4968 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4969 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4970 | /* It all happens later. */ |
4971 | ; | |
252b5132 RH |
4972 | else |
4973 | { | |
4974 | i_ehdrp->e_phentsize = 0; | |
4975 | i_phdrp = 0; | |
4976 | i_ehdrp->e_phoff = 0; | |
4977 | } | |
4978 | ||
4979 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4980 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4981 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4982 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4983 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4984 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4985 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4986 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4987 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4988 | return FALSE; |
252b5132 | 4989 | |
b34976b6 | 4990 | return TRUE; |
252b5132 RH |
4991 | } |
4992 | ||
4993 | /* Assign file positions for all the reloc sections which are not part | |
4994 | of the loadable file image. */ | |
4995 | ||
4996 | void | |
217aa764 | 4997 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4998 | { |
4999 | file_ptr off; | |
9ad5cbcf | 5000 | unsigned int i, num_sec; |
252b5132 RH |
5001 | Elf_Internal_Shdr **shdrpp; |
5002 | ||
5003 | off = elf_tdata (abfd)->next_file_pos; | |
5004 | ||
9ad5cbcf AM |
5005 | num_sec = elf_numsections (abfd); |
5006 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
5007 | { |
5008 | Elf_Internal_Shdr *shdrp; | |
5009 | ||
5010 | shdrp = *shdrpp; | |
5011 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
5012 | && shdrp->sh_offset == -1) | |
b34976b6 | 5013 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
5014 | } |
5015 | ||
5016 | elf_tdata (abfd)->next_file_pos = off; | |
5017 | } | |
5018 | ||
b34976b6 | 5019 | bfd_boolean |
217aa764 | 5020 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 5021 | { |
9c5bfbb7 | 5022 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
5023 | Elf_Internal_Ehdr *i_ehdrp; |
5024 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 5025 | bfd_boolean failed; |
9ad5cbcf | 5026 | unsigned int count, num_sec; |
252b5132 RH |
5027 | |
5028 | if (! abfd->output_has_begun | |
217aa764 | 5029 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5030 | return FALSE; |
252b5132 RH |
5031 | |
5032 | i_shdrp = elf_elfsections (abfd); | |
5033 | i_ehdrp = elf_elfheader (abfd); | |
5034 | ||
b34976b6 | 5035 | failed = FALSE; |
252b5132 RH |
5036 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5037 | if (failed) | |
b34976b6 | 5038 | return FALSE; |
252b5132 RH |
5039 | |
5040 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
5041 | ||
c044fabd | 5042 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5043 | num_sec = elf_numsections (abfd); |
5044 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
5045 | { |
5046 | if (bed->elf_backend_section_processing) | |
5047 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
5048 | if (i_shdrp[count]->contents) | |
5049 | { | |
dc810e39 AM |
5050 | bfd_size_type amt = i_shdrp[count]->sh_size; |
5051 | ||
252b5132 | 5052 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 5053 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 5054 | return FALSE; |
252b5132 | 5055 | } |
9ad5cbcf AM |
5056 | if (count == SHN_LORESERVE - 1) |
5057 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
5058 | } |
5059 | ||
5060 | /* Write out the section header names. */ | |
26ae6d5e DJ |
5061 | if (elf_shstrtab (abfd) != NULL |
5062 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
5063 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 5064 | return FALSE; |
252b5132 RH |
5065 | |
5066 | if (bed->elf_backend_final_write_processing) | |
5067 | (*bed->elf_backend_final_write_processing) (abfd, | |
5068 | elf_tdata (abfd)->linker); | |
5069 | ||
5070 | return bed->s->write_shdrs_and_ehdr (abfd); | |
5071 | } | |
5072 | ||
b34976b6 | 5073 | bfd_boolean |
217aa764 | 5074 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5075 | { |
c044fabd | 5076 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5077 | return _bfd_elf_write_object_contents (abfd); |
5078 | } | |
c044fabd KH |
5079 | |
5080 | /* Given a section, search the header to find them. */ | |
5081 | ||
252b5132 | 5082 | int |
198beae2 | 5083 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5084 | { |
9c5bfbb7 | 5085 | const struct elf_backend_data *bed; |
252b5132 | 5086 | int index; |
252b5132 | 5087 | |
9ad5cbcf AM |
5088 | if (elf_section_data (asect) != NULL |
5089 | && elf_section_data (asect)->this_idx != 0) | |
5090 | return elf_section_data (asect)->this_idx; | |
5091 | ||
5092 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5093 | index = SHN_ABS; |
5094 | else if (bfd_is_com_section (asect)) | |
5095 | index = SHN_COMMON; | |
5096 | else if (bfd_is_und_section (asect)) | |
5097 | index = SHN_UNDEF; | |
5098 | else | |
6dc132d9 | 5099 | index = -1; |
252b5132 | 5100 | |
af746e92 | 5101 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5102 | if (bed->elf_backend_section_from_bfd_section) |
5103 | { | |
af746e92 | 5104 | int retval = index; |
9ad5cbcf | 5105 | |
af746e92 AM |
5106 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5107 | return retval; | |
252b5132 RH |
5108 | } |
5109 | ||
af746e92 AM |
5110 | if (index == -1) |
5111 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 5112 | |
af746e92 | 5113 | return index; |
252b5132 RH |
5114 | } |
5115 | ||
5116 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5117 | on error. */ | |
5118 | ||
5119 | int | |
217aa764 | 5120 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5121 | { |
5122 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5123 | int idx; | |
5124 | flagword flags = asym_ptr->flags; | |
5125 | ||
5126 | /* When gas creates relocations against local labels, it creates its | |
5127 | own symbol for the section, but does put the symbol into the | |
5128 | symbol chain, so udata is 0. When the linker is generating | |
5129 | relocatable output, this section symbol may be for one of the | |
5130 | input sections rather than the output section. */ | |
5131 | if (asym_ptr->udata.i == 0 | |
5132 | && (flags & BSF_SECTION_SYM) | |
5133 | && asym_ptr->section) | |
5134 | { | |
5372391b | 5135 | asection *sec; |
252b5132 RH |
5136 | int indx; |
5137 | ||
5372391b AM |
5138 | sec = asym_ptr->section; |
5139 | if (sec->owner != abfd && sec->output_section != NULL) | |
5140 | sec = sec->output_section; | |
5141 | if (sec->owner == abfd | |
5142 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5143 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5144 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5145 | } | |
5146 | ||
5147 | idx = asym_ptr->udata.i; | |
5148 | ||
5149 | if (idx == 0) | |
5150 | { | |
5151 | /* This case can occur when using --strip-symbol on a symbol | |
5152 | which is used in a relocation entry. */ | |
5153 | (*_bfd_error_handler) | |
d003868e AM |
5154 | (_("%B: symbol `%s' required but not present"), |
5155 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5156 | bfd_set_error (bfd_error_no_symbols); |
5157 | return -1; | |
5158 | } | |
5159 | ||
5160 | #if DEBUG & 4 | |
5161 | { | |
5162 | fprintf (stderr, | |
661a3fd4 | 5163 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5164 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5165 | elf_symbol_flags (flags)); | |
5166 | fflush (stderr); | |
5167 | } | |
5168 | #endif | |
5169 | ||
5170 | return idx; | |
5171 | } | |
5172 | ||
84d1d650 | 5173 | /* Rewrite program header information. */ |
252b5132 | 5174 | |
b34976b6 | 5175 | static bfd_boolean |
84d1d650 | 5176 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5177 | { |
b34976b6 AM |
5178 | Elf_Internal_Ehdr *iehdr; |
5179 | struct elf_segment_map *map; | |
5180 | struct elf_segment_map *map_first; | |
5181 | struct elf_segment_map **pointer_to_map; | |
5182 | Elf_Internal_Phdr *segment; | |
5183 | asection *section; | |
5184 | unsigned int i; | |
5185 | unsigned int num_segments; | |
5186 | bfd_boolean phdr_included = FALSE; | |
5187 | bfd_vma maxpagesize; | |
5188 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5189 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5190 | const struct elf_backend_data *bed; |
bc67d8a6 | 5191 | |
caf47ea6 | 5192 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5193 | iehdr = elf_elfheader (ibfd); |
5194 | ||
bc67d8a6 | 5195 | map_first = NULL; |
c044fabd | 5196 | pointer_to_map = &map_first; |
252b5132 RH |
5197 | |
5198 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5199 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5200 | ||
5201 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5202 | #define SEGMENT_END(segment, start) \ |
5203 | (start + (segment->p_memsz > segment->p_filesz \ | |
5204 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5205 | |
eecdbe52 JJ |
5206 | #define SECTION_SIZE(section, segment) \ |
5207 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5208 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5209 | ? section->size : 0) |
eecdbe52 | 5210 | |
b34976b6 | 5211 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5212 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5213 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5214 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5215 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5216 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5217 | |
b34976b6 | 5218 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5219 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5220 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5221 | (section->lma >= base \ | |
eecdbe52 | 5222 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5223 | <= SEGMENT_END (segment, base))) |
252b5132 | 5224 | |
c044fabd | 5225 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5226 | #define IS_COREFILE_NOTE(p, s) \ |
5227 | (p->p_type == PT_NOTE \ | |
5228 | && bfd_get_format (ibfd) == bfd_core \ | |
5229 | && s->vma == 0 && s->lma == 0 \ | |
5230 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5231 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5232 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5233 | |
5234 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5235 | linker, which generates a PT_INTERP section with p_vaddr and | |
5236 | p_memsz set to 0. */ | |
aecc8f8a AM |
5237 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5238 | (p->p_vaddr == 0 \ | |
5239 | && p->p_paddr == 0 \ | |
5240 | && p->p_memsz == 0 \ | |
5241 | && p->p_filesz > 0 \ | |
5242 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5243 | && s->size > 0 \ |
aecc8f8a | 5244 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5245 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5246 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5247 | |
bc67d8a6 NC |
5248 | /* Decide if the given section should be included in the given segment. |
5249 | A section will be included if: | |
f5ffc919 NC |
5250 | 1. It is within the address space of the segment -- we use the LMA |
5251 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5252 | 2. It is an allocated segment, |
5253 | 3. There is an output section associated with it, | |
eecdbe52 | 5254 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5255 | 5. PT_GNU_STACK segments do not include any sections. |
5256 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5257 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5258 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5259 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5260 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5261 | ((((segment->p_paddr \ |
5262 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5263 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5264 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5265 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5266 | && section->output_section != NULL \ |
03394ac9 | 5267 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5268 | && (segment->p_type != PT_TLS \ |
5269 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5270 | && (segment->p_type == PT_LOAD \ | |
5271 | || segment->p_type == PT_TLS \ | |
5272 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5273 | && (segment->p_type != PT_DYNAMIC \ |
5274 | || SECTION_SIZE (section, segment) > 0 \ | |
5275 | || (segment->p_paddr \ | |
5276 | ? segment->p_paddr != section->lma \ | |
5277 | : segment->p_vaddr != section->vma) \ | |
5278 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5279 | == 0)) \ | |
82e51918 | 5280 | && ! section->segment_mark) |
bc67d8a6 | 5281 | |
b34976b6 | 5282 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5283 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5284 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5285 | ||
5286 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5287 | their VMA address ranges and their LMA address ranges overlap. | |
5288 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5289 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5290 | to the same VMA range, but with the .data section mapped to a different | |
5291 | LMA. */ | |
aecc8f8a | 5292 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5293 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5294 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5295 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5296 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5297 | |
5298 | /* Initialise the segment mark field. */ | |
5299 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5300 | section->segment_mark = FALSE; |
bc67d8a6 | 5301 | |
252b5132 | 5302 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5303 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5304 | in the loadable segments. These can be created by weird |
aecc8f8a | 5305 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5306 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5307 | i < num_segments; | |
c044fabd | 5308 | i++, segment++) |
252b5132 | 5309 | { |
252b5132 | 5310 | unsigned int j; |
c044fabd | 5311 | Elf_Internal_Phdr *segment2; |
252b5132 | 5312 | |
aecc8f8a AM |
5313 | if (segment->p_type == PT_INTERP) |
5314 | for (section = ibfd->sections; section; section = section->next) | |
5315 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5316 | { | |
5317 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5318 | assignment code will work. */ |
aecc8f8a AM |
5319 | segment->p_vaddr = section->vma; |
5320 | break; | |
5321 | } | |
5322 | ||
bc67d8a6 NC |
5323 | if (segment->p_type != PT_LOAD) |
5324 | continue; | |
c044fabd | 5325 | |
bc67d8a6 | 5326 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5327 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5328 | { |
5329 | bfd_signed_vma extra_length; | |
c044fabd | 5330 | |
bc67d8a6 NC |
5331 | if (segment2->p_type != PT_LOAD |
5332 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5333 | continue; | |
c044fabd | 5334 | |
bc67d8a6 NC |
5335 | /* Merge the two segments together. */ |
5336 | if (segment2->p_vaddr < segment->p_vaddr) | |
5337 | { | |
c044fabd KH |
5338 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5339 | SEGMENT. */ | |
bc67d8a6 NC |
5340 | extra_length = |
5341 | SEGMENT_END (segment, segment->p_vaddr) | |
5342 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5343 | |
bc67d8a6 NC |
5344 | if (extra_length > 0) |
5345 | { | |
5346 | segment2->p_memsz += extra_length; | |
5347 | segment2->p_filesz += extra_length; | |
5348 | } | |
c044fabd | 5349 | |
bc67d8a6 | 5350 | segment->p_type = PT_NULL; |
c044fabd | 5351 | |
bc67d8a6 NC |
5352 | /* Since we have deleted P we must restart the outer loop. */ |
5353 | i = 0; | |
5354 | segment = elf_tdata (ibfd)->phdr; | |
5355 | break; | |
5356 | } | |
5357 | else | |
5358 | { | |
c044fabd KH |
5359 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5360 | SEGMENT2. */ | |
bc67d8a6 NC |
5361 | extra_length = |
5362 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5363 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5364 | |
bc67d8a6 NC |
5365 | if (extra_length > 0) |
5366 | { | |
5367 | segment->p_memsz += extra_length; | |
5368 | segment->p_filesz += extra_length; | |
5369 | } | |
c044fabd | 5370 | |
bc67d8a6 NC |
5371 | segment2->p_type = PT_NULL; |
5372 | } | |
5373 | } | |
5374 | } | |
c044fabd | 5375 | |
bc67d8a6 NC |
5376 | /* The second scan attempts to assign sections to segments. */ |
5377 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5378 | i < num_segments; | |
5379 | i ++, segment ++) | |
5380 | { | |
5381 | unsigned int section_count; | |
5382 | asection ** sections; | |
5383 | asection * output_section; | |
5384 | unsigned int isec; | |
5385 | bfd_vma matching_lma; | |
5386 | bfd_vma suggested_lma; | |
5387 | unsigned int j; | |
dc810e39 | 5388 | bfd_size_type amt; |
bc67d8a6 NC |
5389 | |
5390 | if (segment->p_type == PT_NULL) | |
5391 | continue; | |
c044fabd | 5392 | |
bc67d8a6 | 5393 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5394 | for (section = ibfd->sections, section_count = 0; |
5395 | section != NULL; | |
5396 | section = section->next) | |
caf47ea6 | 5397 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5398 | ++section_count; |
811072d8 | 5399 | |
b5f852ea NC |
5400 | /* Allocate a segment map big enough to contain |
5401 | all of the sections we have selected. */ | |
dc810e39 AM |
5402 | amt = sizeof (struct elf_segment_map); |
5403 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5404 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5405 | if (map == NULL) |
b34976b6 | 5406 | return FALSE; |
252b5132 RH |
5407 | |
5408 | /* Initialise the fields of the segment map. Default to | |
5409 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5410 | map->next = NULL; |
5411 | map->p_type = segment->p_type; | |
5412 | map->p_flags = segment->p_flags; | |
5413 | map->p_flags_valid = 1; | |
5414 | map->p_paddr = segment->p_paddr; | |
5415 | map->p_paddr_valid = 1; | |
252b5132 RH |
5416 | |
5417 | /* Determine if this segment contains the ELF file header | |
5418 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5419 | map->includes_filehdr = (segment->p_offset == 0 |
5420 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5421 | |
bc67d8a6 | 5422 | map->includes_phdrs = 0; |
252b5132 | 5423 | |
bc67d8a6 | 5424 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5425 | { |
bc67d8a6 NC |
5426 | map->includes_phdrs = |
5427 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5428 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5429 | >= ((bfd_vma) iehdr->e_phoff |
5430 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5431 | |
bc67d8a6 | 5432 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5433 | phdr_included = TRUE; |
252b5132 RH |
5434 | } |
5435 | ||
bc67d8a6 | 5436 | if (section_count == 0) |
252b5132 RH |
5437 | { |
5438 | /* Special segments, such as the PT_PHDR segment, may contain | |
5439 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5440 | something. They are allowed by the ELF spec however, so only |
5441 | a warning is produced. */ | |
bc67d8a6 | 5442 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5443 | (*_bfd_error_handler) |
d003868e AM |
5444 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5445 | ibfd); | |
252b5132 | 5446 | |
bc67d8a6 | 5447 | map->count = 0; |
c044fabd KH |
5448 | *pointer_to_map = map; |
5449 | pointer_to_map = &map->next; | |
252b5132 RH |
5450 | |
5451 | continue; | |
5452 | } | |
5453 | ||
5454 | /* Now scan the sections in the input BFD again and attempt | |
5455 | to add their corresponding output sections to the segment map. | |
5456 | The problem here is how to handle an output section which has | |
5457 | been moved (ie had its LMA changed). There are four possibilities: | |
5458 | ||
5459 | 1. None of the sections have been moved. | |
5460 | In this case we can continue to use the segment LMA from the | |
5461 | input BFD. | |
5462 | ||
5463 | 2. All of the sections have been moved by the same amount. | |
5464 | In this case we can change the segment's LMA to match the LMA | |
5465 | of the first section. | |
5466 | ||
5467 | 3. Some of the sections have been moved, others have not. | |
5468 | In this case those sections which have not been moved can be | |
5469 | placed in the current segment which will have to have its size, | |
5470 | and possibly its LMA changed, and a new segment or segments will | |
5471 | have to be created to contain the other sections. | |
5472 | ||
b5f852ea | 5473 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5474 | In this case we can change the segment's LMA to match the LMA |
5475 | of the first section and we will have to create a new segment | |
5476 | or segments to contain the other sections. | |
5477 | ||
5478 | In order to save time, we allocate an array to hold the section | |
5479 | pointers that we are interested in. As these sections get assigned | |
5480 | to a segment, they are removed from this array. */ | |
5481 | ||
0b14c2aa L |
5482 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5483 | to work around this long long bug. */ | |
d0fb9a8d | 5484 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5485 | if (sections == NULL) |
b34976b6 | 5486 | return FALSE; |
252b5132 RH |
5487 | |
5488 | /* Step One: Scan for segment vs section LMA conflicts. | |
5489 | Also add the sections to the section array allocated above. | |
5490 | Also add the sections to the current segment. In the common | |
5491 | case, where the sections have not been moved, this means that | |
5492 | we have completely filled the segment, and there is nothing | |
5493 | more to do. */ | |
252b5132 | 5494 | isec = 0; |
72730e0c | 5495 | matching_lma = 0; |
252b5132 RH |
5496 | suggested_lma = 0; |
5497 | ||
bc67d8a6 NC |
5498 | for (j = 0, section = ibfd->sections; |
5499 | section != NULL; | |
5500 | section = section->next) | |
252b5132 | 5501 | { |
caf47ea6 | 5502 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5503 | { |
bc67d8a6 NC |
5504 | output_section = section->output_section; |
5505 | ||
5506 | sections[j ++] = section; | |
252b5132 RH |
5507 | |
5508 | /* The Solaris native linker always sets p_paddr to 0. | |
5509 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5510 | correct value. Note - some backends require that |
5511 | p_paddr be left as zero. */ | |
bc67d8a6 | 5512 | if (segment->p_paddr == 0 |
4455705d | 5513 | && segment->p_vaddr != 0 |
5e8d7549 | 5514 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5515 | && isec == 0 |
bc67d8a6 NC |
5516 | && output_section->lma != 0 |
5517 | && (output_section->vma == (segment->p_vaddr | |
5518 | + (map->includes_filehdr | |
5519 | ? iehdr->e_ehsize | |
5520 | : 0) | |
5521 | + (map->includes_phdrs | |
079e9a2f AM |
5522 | ? (iehdr->e_phnum |
5523 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5524 | : 0)))) |
5525 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5526 | |
5527 | /* Match up the physical address of the segment with the | |
5528 | LMA address of the output section. */ | |
bc67d8a6 | 5529 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5530 | || IS_COREFILE_NOTE (segment, section) |
5531 | || (bed->want_p_paddr_set_to_zero && | |
5532 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5533 | ) | |
252b5132 RH |
5534 | { |
5535 | if (matching_lma == 0) | |
bc67d8a6 | 5536 | matching_lma = output_section->lma; |
252b5132 RH |
5537 | |
5538 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5539 | then it does not overlap any other section within that |
252b5132 | 5540 | segment. */ |
bc67d8a6 | 5541 | map->sections[isec ++] = output_section; |
252b5132 RH |
5542 | } |
5543 | else if (suggested_lma == 0) | |
bc67d8a6 | 5544 | suggested_lma = output_section->lma; |
252b5132 RH |
5545 | } |
5546 | } | |
5547 | ||
bc67d8a6 | 5548 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5549 | |
5550 | /* Step Two: Adjust the physical address of the current segment, | |
5551 | if necessary. */ | |
bc67d8a6 | 5552 | if (isec == section_count) |
252b5132 RH |
5553 | { |
5554 | /* All of the sections fitted within the segment as currently | |
5555 | specified. This is the default case. Add the segment to | |
5556 | the list of built segments and carry on to process the next | |
5557 | program header in the input BFD. */ | |
bc67d8a6 | 5558 | map->count = section_count; |
c044fabd KH |
5559 | *pointer_to_map = map; |
5560 | pointer_to_map = &map->next; | |
252b5132 RH |
5561 | |
5562 | free (sections); | |
5563 | continue; | |
5564 | } | |
252b5132 RH |
5565 | else |
5566 | { | |
72730e0c AM |
5567 | if (matching_lma != 0) |
5568 | { | |
5569 | /* At least one section fits inside the current segment. | |
5570 | Keep it, but modify its physical address to match the | |
5571 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5572 | map->p_paddr = matching_lma; |
72730e0c AM |
5573 | } |
5574 | else | |
5575 | { | |
5576 | /* None of the sections fitted inside the current segment. | |
5577 | Change the current segment's physical address to match | |
5578 | the LMA of the first section. */ | |
bc67d8a6 | 5579 | map->p_paddr = suggested_lma; |
72730e0c AM |
5580 | } |
5581 | ||
bc67d8a6 NC |
5582 | /* Offset the segment physical address from the lma |
5583 | to allow for space taken up by elf headers. */ | |
5584 | if (map->includes_filehdr) | |
5585 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5586 | |
bc67d8a6 NC |
5587 | if (map->includes_phdrs) |
5588 | { | |
5589 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5590 | ||
5591 | /* iehdr->e_phnum is just an estimate of the number | |
5592 | of program headers that we will need. Make a note | |
5593 | here of the number we used and the segment we chose | |
5594 | to hold these headers, so that we can adjust the | |
5595 | offset when we know the correct value. */ | |
5596 | phdr_adjust_num = iehdr->e_phnum; | |
5597 | phdr_adjust_seg = map; | |
5598 | } | |
252b5132 RH |
5599 | } |
5600 | ||
5601 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5602 | those that fit to the current segment and removing them from the |
252b5132 RH |
5603 | sections array; but making sure not to leave large gaps. Once all |
5604 | possible sections have been assigned to the current segment it is | |
5605 | added to the list of built segments and if sections still remain | |
5606 | to be assigned, a new segment is constructed before repeating | |
5607 | the loop. */ | |
5608 | isec = 0; | |
5609 | do | |
5610 | { | |
bc67d8a6 | 5611 | map->count = 0; |
252b5132 RH |
5612 | suggested_lma = 0; |
5613 | ||
5614 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5615 | for (j = 0; j < section_count; j++) |
252b5132 | 5616 | { |
bc67d8a6 | 5617 | section = sections[j]; |
252b5132 | 5618 | |
bc67d8a6 | 5619 | if (section == NULL) |
252b5132 RH |
5620 | continue; |
5621 | ||
bc67d8a6 | 5622 | output_section = section->output_section; |
252b5132 | 5623 | |
bc67d8a6 | 5624 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5625 | |
bc67d8a6 NC |
5626 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5627 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5628 | { |
bc67d8a6 | 5629 | if (map->count == 0) |
252b5132 RH |
5630 | { |
5631 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5632 | the beginning of the segment, then something is |
5633 | wrong. */ | |
5634 | if (output_section->lma != | |
5635 | (map->p_paddr | |
5636 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5637 | + (map->includes_phdrs | |
5638 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5639 | : 0))) | |
252b5132 RH |
5640 | abort (); |
5641 | } | |
5642 | else | |
5643 | { | |
5644 | asection * prev_sec; | |
252b5132 | 5645 | |
bc67d8a6 | 5646 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5647 | |
5648 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5649 | and the start of this section is more than |
5650 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5651 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5652 | maxpagesize) |
caf47ea6 | 5653 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5654 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5655 | > output_section->lma)) |
252b5132 RH |
5656 | { |
5657 | if (suggested_lma == 0) | |
bc67d8a6 | 5658 | suggested_lma = output_section->lma; |
252b5132 RH |
5659 | |
5660 | continue; | |
5661 | } | |
5662 | } | |
5663 | ||
bc67d8a6 | 5664 | map->sections[map->count++] = output_section; |
252b5132 RH |
5665 | ++isec; |
5666 | sections[j] = NULL; | |
b34976b6 | 5667 | section->segment_mark = TRUE; |
252b5132 RH |
5668 | } |
5669 | else if (suggested_lma == 0) | |
bc67d8a6 | 5670 | suggested_lma = output_section->lma; |
252b5132 RH |
5671 | } |
5672 | ||
bc67d8a6 | 5673 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5674 | |
5675 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5676 | *pointer_to_map = map; |
5677 | pointer_to_map = &map->next; | |
252b5132 | 5678 | |
bc67d8a6 | 5679 | if (isec < section_count) |
252b5132 RH |
5680 | { |
5681 | /* We still have not allocated all of the sections to | |
5682 | segments. Create a new segment here, initialise it | |
5683 | and carry on looping. */ | |
dc810e39 AM |
5684 | amt = sizeof (struct elf_segment_map); |
5685 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5686 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5687 | if (map == NULL) |
5ed6aba4 NC |
5688 | { |
5689 | free (sections); | |
5690 | return FALSE; | |
5691 | } | |
252b5132 RH |
5692 | |
5693 | /* Initialise the fields of the segment map. Set the physical | |
5694 | physical address to the LMA of the first section that has | |
5695 | not yet been assigned. */ | |
bc67d8a6 NC |
5696 | map->next = NULL; |
5697 | map->p_type = segment->p_type; | |
5698 | map->p_flags = segment->p_flags; | |
5699 | map->p_flags_valid = 1; | |
5700 | map->p_paddr = suggested_lma; | |
5701 | map->p_paddr_valid = 1; | |
5702 | map->includes_filehdr = 0; | |
5703 | map->includes_phdrs = 0; | |
252b5132 RH |
5704 | } |
5705 | } | |
bc67d8a6 | 5706 | while (isec < section_count); |
252b5132 RH |
5707 | |
5708 | free (sections); | |
5709 | } | |
5710 | ||
5711 | /* The Solaris linker creates program headers in which all the | |
5712 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5713 | file, we get confused. Check for this case, and if we find it | |
5714 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5715 | for (map = map_first; map != NULL; map = map->next) |
5716 | if (map->p_paddr != 0) | |
252b5132 | 5717 | break; |
bc67d8a6 | 5718 | if (map == NULL) |
b5f852ea NC |
5719 | for (map = map_first; map != NULL; map = map->next) |
5720 | map->p_paddr_valid = 0; | |
252b5132 | 5721 | |
bc67d8a6 NC |
5722 | elf_tdata (obfd)->segment_map = map_first; |
5723 | ||
5724 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5725 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5726 | the offset if necessary. */ |
5727 | if (phdr_adjust_seg != NULL) | |
5728 | { | |
5729 | unsigned int count; | |
c044fabd | 5730 | |
bc67d8a6 | 5731 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5732 | count++; |
252b5132 | 5733 | |
bc67d8a6 NC |
5734 | if (count > phdr_adjust_num) |
5735 | phdr_adjust_seg->p_paddr | |
5736 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5737 | } | |
c044fabd | 5738 | |
bc67d8a6 | 5739 | #undef SEGMENT_END |
eecdbe52 | 5740 | #undef SECTION_SIZE |
bc67d8a6 NC |
5741 | #undef IS_CONTAINED_BY_VMA |
5742 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5743 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5744 | #undef IS_SOLARIS_PT_INTERP |
5745 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5746 | #undef SEGMENT_AFTER_SEGMENT | |
5747 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5748 | return TRUE; |
252b5132 RH |
5749 | } |
5750 | ||
84d1d650 L |
5751 | /* Copy ELF program header information. */ |
5752 | ||
5753 | static bfd_boolean | |
5754 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5755 | { | |
5756 | Elf_Internal_Ehdr *iehdr; | |
5757 | struct elf_segment_map *map; | |
5758 | struct elf_segment_map *map_first; | |
5759 | struct elf_segment_map **pointer_to_map; | |
5760 | Elf_Internal_Phdr *segment; | |
5761 | unsigned int i; | |
5762 | unsigned int num_segments; | |
5763 | bfd_boolean phdr_included = FALSE; | |
5764 | ||
5765 | iehdr = elf_elfheader (ibfd); | |
5766 | ||
5767 | map_first = NULL; | |
5768 | pointer_to_map = &map_first; | |
5769 | ||
5770 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5771 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5772 | i < num_segments; | |
5773 | i++, segment++) | |
5774 | { | |
5775 | asection *section; | |
5776 | unsigned int section_count; | |
5777 | bfd_size_type amt; | |
5778 | Elf_Internal_Shdr *this_hdr; | |
5779 | ||
5780 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5781 | if (segment->p_type == PT_NULL) | |
5782 | continue; | |
5783 | ||
5784 | /* Compute how many sections are in this segment. */ | |
5785 | for (section = ibfd->sections, section_count = 0; | |
5786 | section != NULL; | |
5787 | section = section->next) | |
5788 | { | |
5789 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5790 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5791 | section_count++; | |
5792 | } | |
5793 | ||
5794 | /* Allocate a segment map big enough to contain | |
5795 | all of the sections we have selected. */ | |
5796 | amt = sizeof (struct elf_segment_map); | |
5797 | if (section_count != 0) | |
5798 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5799 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5800 | if (map == NULL) |
5801 | return FALSE; | |
5802 | ||
5803 | /* Initialize the fields of the output segment map with the | |
5804 | input segment. */ | |
5805 | map->next = NULL; | |
5806 | map->p_type = segment->p_type; | |
5807 | map->p_flags = segment->p_flags; | |
5808 | map->p_flags_valid = 1; | |
5809 | map->p_paddr = segment->p_paddr; | |
5810 | map->p_paddr_valid = 1; | |
3f570048 AM |
5811 | map->p_align = segment->p_align; |
5812 | map->p_align_valid = 1; | |
84d1d650 L |
5813 | |
5814 | /* Determine if this segment contains the ELF file header | |
5815 | and if it contains the program headers themselves. */ | |
5816 | map->includes_filehdr = (segment->p_offset == 0 | |
5817 | && segment->p_filesz >= iehdr->e_ehsize); | |
5818 | ||
5819 | map->includes_phdrs = 0; | |
5820 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5821 | { | |
5822 | map->includes_phdrs = | |
5823 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5824 | && (segment->p_offset + segment->p_filesz | |
5825 | >= ((bfd_vma) iehdr->e_phoff | |
5826 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5827 | ||
5828 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5829 | phdr_included = TRUE; | |
5830 | } | |
5831 | ||
5832 | if (section_count != 0) | |
5833 | { | |
5834 | unsigned int isec = 0; | |
5835 | ||
5836 | for (section = ibfd->sections; | |
5837 | section != NULL; | |
5838 | section = section->next) | |
5839 | { | |
5840 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5841 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5842 | map->sections[isec++] = section->output_section; | |
5843 | } | |
5844 | } | |
5845 | ||
5846 | map->count = section_count; | |
5847 | *pointer_to_map = map; | |
5848 | pointer_to_map = &map->next; | |
5849 | } | |
5850 | ||
5851 | elf_tdata (obfd)->segment_map = map_first; | |
5852 | return TRUE; | |
5853 | } | |
5854 | ||
5855 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5856 | information. */ | |
5857 | ||
5858 | static bfd_boolean | |
5859 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5860 | { | |
84d1d650 L |
5861 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5862 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5863 | return TRUE; | |
5864 | ||
5865 | if (elf_tdata (ibfd)->phdr == NULL) | |
5866 | return TRUE; | |
5867 | ||
5868 | if (ibfd->xvec == obfd->xvec) | |
5869 | { | |
5870 | /* Check if any sections in the input BFD covered by ELF program | |
5871 | header are changed. */ | |
d55ce4e2 | 5872 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5873 | asection *section, *osec; |
5874 | unsigned int i, num_segments; | |
5875 | Elf_Internal_Shdr *this_hdr; | |
5876 | ||
5877 | /* Initialize the segment mark field. */ | |
5878 | for (section = obfd->sections; section != NULL; | |
5879 | section = section->next) | |
5880 | section->segment_mark = FALSE; | |
5881 | ||
5882 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5883 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5884 | i < num_segments; | |
5885 | i++, segment++) | |
5886 | { | |
5887 | for (section = ibfd->sections; | |
5888 | section != NULL; section = section->next) | |
5889 | { | |
5890 | /* We mark the output section so that we know it comes | |
5891 | from the input BFD. */ | |
5892 | osec = section->output_section; | |
5893 | if (osec) | |
5894 | osec->segment_mark = TRUE; | |
5895 | ||
5896 | /* Check if this section is covered by the segment. */ | |
5897 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5898 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5899 | { | |
5900 | /* FIXME: Check if its output section is changed or | |
5901 | removed. What else do we need to check? */ | |
5902 | if (osec == NULL | |
5903 | || section->flags != osec->flags | |
5904 | || section->lma != osec->lma | |
5905 | || section->vma != osec->vma | |
5906 | || section->size != osec->size | |
5907 | || section->rawsize != osec->rawsize | |
5908 | || section->alignment_power != osec->alignment_power) | |
5909 | goto rewrite; | |
5910 | } | |
5911 | } | |
5912 | } | |
5913 | ||
5914 | /* Check to see if any output section doesn't come from the | |
5915 | input BFD. */ | |
5916 | for (section = obfd->sections; section != NULL; | |
5917 | section = section->next) | |
5918 | { | |
5919 | if (section->segment_mark == FALSE) | |
5920 | goto rewrite; | |
5921 | else | |
5922 | section->segment_mark = FALSE; | |
5923 | } | |
5924 | ||
5925 | return copy_elf_program_header (ibfd, obfd); | |
5926 | } | |
5927 | ||
5928 | rewrite: | |
5929 | return rewrite_elf_program_header (ibfd, obfd); | |
5930 | } | |
5931 | ||
ccd2ec6a L |
5932 | /* Initialize private output section information from input section. */ |
5933 | ||
5934 | bfd_boolean | |
5935 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5936 | asection *isec, | |
5937 | bfd *obfd, | |
5938 | asection *osec, | |
5939 | struct bfd_link_info *link_info) | |
5940 | ||
5941 | { | |
5942 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5943 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
5944 | ||
5945 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5946 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
5947 | return TRUE; | |
5948 | ||
e843e0f8 | 5949 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 5950 | output BFD section flags have been set to something different. |
e843e0f8 L |
5951 | elf_fake_sections will set ELF section type based on BFD |
5952 | section flags. */ | |
d270463e L |
5953 | if (osec->flags == isec->flags || !osec->flags) |
5954 | { | |
5955 | BFD_ASSERT (osec->flags == isec->flags | |
5956 | || (!osec->flags | |
5957 | && elf_section_type (osec) == SHT_NULL)); | |
5958 | elf_section_type (osec) = elf_section_type (isec); | |
5959 | } | |
5960 | ||
5961 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
5962 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
5963 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
5964 | |
5965 | /* Set things up for objcopy and relocatable link. The output | |
5966 | SHT_GROUP section will have its elf_next_in_group pointing back | |
5967 | to the input group members. Ignore linker created group section. | |
5968 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
5969 | if (need_group) |
5970 | { | |
5971 | if (elf_sec_group (isec) == NULL | |
5972 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5973 | { | |
5974 | if (elf_section_flags (isec) & SHF_GROUP) | |
5975 | elf_section_flags (osec) |= SHF_GROUP; | |
5976 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5977 | elf_group_name (osec) = elf_group_name (isec); | |
5978 | } | |
5979 | } | |
5980 | ||
5981 | ihdr = &elf_section_data (isec)->this_hdr; | |
5982 | ||
5983 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
5984 | don't use the output section of the linked-to section since it | |
5985 | may be NULL at this point. */ | |
5986 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
5987 | { | |
5988 | ohdr = &elf_section_data (osec)->this_hdr; | |
5989 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
5990 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
5991 | } | |
5992 | ||
5993 | osec->use_rela_p = isec->use_rela_p; | |
5994 | ||
5995 | return TRUE; | |
5996 | } | |
5997 | ||
252b5132 RH |
5998 | /* Copy private section information. This copies over the entsize |
5999 | field, and sometimes the info field. */ | |
6000 | ||
b34976b6 | 6001 | bfd_boolean |
217aa764 AM |
6002 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6003 | asection *isec, | |
6004 | bfd *obfd, | |
6005 | asection *osec) | |
252b5132 RH |
6006 | { |
6007 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6008 | ||
6009 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6010 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6011 | return TRUE; |
252b5132 | 6012 | |
252b5132 RH |
6013 | ihdr = &elf_section_data (isec)->this_hdr; |
6014 | ohdr = &elf_section_data (osec)->this_hdr; | |
6015 | ||
6016 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6017 | ||
6018 | if (ihdr->sh_type == SHT_SYMTAB | |
6019 | || ihdr->sh_type == SHT_DYNSYM | |
6020 | || ihdr->sh_type == SHT_GNU_verneed | |
6021 | || ihdr->sh_type == SHT_GNU_verdef) | |
6022 | ohdr->sh_info = ihdr->sh_info; | |
6023 | ||
ccd2ec6a L |
6024 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6025 | NULL); | |
252b5132 RH |
6026 | } |
6027 | ||
80fccad2 BW |
6028 | /* Copy private header information. */ |
6029 | ||
6030 | bfd_boolean | |
6031 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6032 | { | |
30288845 AM |
6033 | asection *isec; |
6034 | ||
80fccad2 BW |
6035 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6036 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6037 | return TRUE; | |
6038 | ||
6039 | /* Copy over private BFD data if it has not already been copied. | |
6040 | This must be done here, rather than in the copy_private_bfd_data | |
6041 | entry point, because the latter is called after the section | |
6042 | contents have been set, which means that the program headers have | |
6043 | already been worked out. */ | |
6044 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6045 | { | |
6046 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6047 | return FALSE; | |
6048 | } | |
6049 | ||
30288845 AM |
6050 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
6051 | but this might be wrong if we deleted the group section. */ | |
6052 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
6053 | if (elf_section_type (isec) == SHT_GROUP | |
6054 | && isec->output_section == NULL) | |
6055 | { | |
6056 | asection *first = elf_next_in_group (isec); | |
6057 | asection *s = first; | |
6058 | while (s != NULL) | |
6059 | { | |
6060 | if (s->output_section != NULL) | |
6061 | { | |
6062 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6063 | elf_group_name (s->output_section) = NULL; | |
6064 | } | |
6065 | s = elf_next_in_group (s); | |
6066 | if (s == first) | |
6067 | break; | |
6068 | } | |
6069 | } | |
6070 | ||
80fccad2 BW |
6071 | return TRUE; |
6072 | } | |
6073 | ||
252b5132 RH |
6074 | /* Copy private symbol information. If this symbol is in a section |
6075 | which we did not map into a BFD section, try to map the section | |
6076 | index correctly. We use special macro definitions for the mapped | |
6077 | section indices; these definitions are interpreted by the | |
6078 | swap_out_syms function. */ | |
6079 | ||
9ad5cbcf AM |
6080 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6081 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6082 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6083 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6084 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6085 | |
b34976b6 | 6086 | bfd_boolean |
217aa764 AM |
6087 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6088 | asymbol *isymarg, | |
6089 | bfd *obfd, | |
6090 | asymbol *osymarg) | |
252b5132 RH |
6091 | { |
6092 | elf_symbol_type *isym, *osym; | |
6093 | ||
6094 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6095 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6096 | return TRUE; |
252b5132 RH |
6097 | |
6098 | isym = elf_symbol_from (ibfd, isymarg); | |
6099 | osym = elf_symbol_from (obfd, osymarg); | |
6100 | ||
6101 | if (isym != NULL | |
6102 | && osym != NULL | |
6103 | && bfd_is_abs_section (isym->symbol.section)) | |
6104 | { | |
6105 | unsigned int shndx; | |
6106 | ||
6107 | shndx = isym->internal_elf_sym.st_shndx; | |
6108 | if (shndx == elf_onesymtab (ibfd)) | |
6109 | shndx = MAP_ONESYMTAB; | |
6110 | else if (shndx == elf_dynsymtab (ibfd)) | |
6111 | shndx = MAP_DYNSYMTAB; | |
6112 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6113 | shndx = MAP_STRTAB; | |
6114 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6115 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6116 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6117 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6118 | osym->internal_elf_sym.st_shndx = shndx; |
6119 | } | |
6120 | ||
b34976b6 | 6121 | return TRUE; |
252b5132 RH |
6122 | } |
6123 | ||
6124 | /* Swap out the symbols. */ | |
6125 | ||
b34976b6 | 6126 | static bfd_boolean |
217aa764 AM |
6127 | swap_out_syms (bfd *abfd, |
6128 | struct bfd_strtab_hash **sttp, | |
6129 | int relocatable_p) | |
252b5132 | 6130 | { |
9c5bfbb7 | 6131 | const struct elf_backend_data *bed; |
079e9a2f AM |
6132 | int symcount; |
6133 | asymbol **syms; | |
6134 | struct bfd_strtab_hash *stt; | |
6135 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6136 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6137 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6138 | bfd_byte *outbound_syms; |
6139 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6140 | int idx; |
6141 | bfd_size_type amt; | |
174fd7f9 | 6142 | bfd_boolean name_local_sections; |
252b5132 RH |
6143 | |
6144 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6145 | return FALSE; |
252b5132 | 6146 | |
c044fabd | 6147 | /* Dump out the symtabs. */ |
079e9a2f AM |
6148 | stt = _bfd_elf_stringtab_init (); |
6149 | if (stt == NULL) | |
b34976b6 | 6150 | return FALSE; |
252b5132 | 6151 | |
079e9a2f AM |
6152 | bed = get_elf_backend_data (abfd); |
6153 | symcount = bfd_get_symcount (abfd); | |
6154 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6155 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6156 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6157 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6158 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6159 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6160 | |
6161 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6162 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6163 | ||
d0fb9a8d | 6164 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6165 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6166 | { |
6167 | _bfd_stringtab_free (stt); | |
6168 | return FALSE; | |
6169 | } | |
217aa764 | 6170 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6171 | |
9ad5cbcf AM |
6172 | outbound_shndx = NULL; |
6173 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6174 | if (symtab_shndx_hdr->sh_name != 0) | |
6175 | { | |
6176 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6177 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6178 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6179 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6180 | { |
6181 | _bfd_stringtab_free (stt); | |
6182 | return FALSE; | |
6183 | } | |
6184 | ||
9ad5cbcf AM |
6185 | symtab_shndx_hdr->contents = outbound_shndx; |
6186 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6187 | symtab_shndx_hdr->sh_size = amt; | |
6188 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6189 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6190 | } | |
6191 | ||
589e6347 | 6192 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6193 | { |
6194 | /* Fill in zeroth symbol and swap it out. */ | |
6195 | Elf_Internal_Sym sym; | |
6196 | sym.st_name = 0; | |
6197 | sym.st_value = 0; | |
6198 | sym.st_size = 0; | |
6199 | sym.st_info = 0; | |
6200 | sym.st_other = 0; | |
6201 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6202 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6203 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6204 | if (outbound_shndx != NULL) |
6205 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6206 | } |
252b5132 | 6207 | |
174fd7f9 RS |
6208 | name_local_sections |
6209 | = (bed->elf_backend_name_local_section_symbols | |
6210 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6211 | ||
079e9a2f AM |
6212 | syms = bfd_get_outsymbols (abfd); |
6213 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6214 | { |
252b5132 | 6215 | Elf_Internal_Sym sym; |
079e9a2f AM |
6216 | bfd_vma value = syms[idx]->value; |
6217 | elf_symbol_type *type_ptr; | |
6218 | flagword flags = syms[idx]->flags; | |
6219 | int type; | |
252b5132 | 6220 | |
174fd7f9 RS |
6221 | if (!name_local_sections |
6222 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6223 | { |
6224 | /* Local section symbols have no name. */ | |
6225 | sym.st_name = 0; | |
6226 | } | |
6227 | else | |
6228 | { | |
6229 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6230 | syms[idx]->name, | |
b34976b6 | 6231 | TRUE, FALSE); |
079e9a2f | 6232 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6233 | { |
6234 | _bfd_stringtab_free (stt); | |
6235 | return FALSE; | |
6236 | } | |
079e9a2f | 6237 | } |
252b5132 | 6238 | |
079e9a2f | 6239 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6240 | |
079e9a2f AM |
6241 | if ((flags & BSF_SECTION_SYM) == 0 |
6242 | && bfd_is_com_section (syms[idx]->section)) | |
6243 | { | |
6244 | /* ELF common symbols put the alignment into the `value' field, | |
6245 | and the size into the `size' field. This is backwards from | |
6246 | how BFD handles it, so reverse it here. */ | |
6247 | sym.st_size = value; | |
6248 | if (type_ptr == NULL | |
6249 | || type_ptr->internal_elf_sym.st_value == 0) | |
6250 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6251 | else | |
6252 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6253 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6254 | (abfd, syms[idx]->section); | |
6255 | } | |
6256 | else | |
6257 | { | |
6258 | asection *sec = syms[idx]->section; | |
6259 | int shndx; | |
252b5132 | 6260 | |
079e9a2f AM |
6261 | if (sec->output_section) |
6262 | { | |
6263 | value += sec->output_offset; | |
6264 | sec = sec->output_section; | |
6265 | } | |
589e6347 | 6266 | |
079e9a2f AM |
6267 | /* Don't add in the section vma for relocatable output. */ |
6268 | if (! relocatable_p) | |
6269 | value += sec->vma; | |
6270 | sym.st_value = value; | |
6271 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6272 | ||
6273 | if (bfd_is_abs_section (sec) | |
6274 | && type_ptr != NULL | |
6275 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6276 | { | |
6277 | /* This symbol is in a real ELF section which we did | |
6278 | not create as a BFD section. Undo the mapping done | |
6279 | by copy_private_symbol_data. */ | |
6280 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6281 | switch (shndx) | |
6282 | { | |
6283 | case MAP_ONESYMTAB: | |
6284 | shndx = elf_onesymtab (abfd); | |
6285 | break; | |
6286 | case MAP_DYNSYMTAB: | |
6287 | shndx = elf_dynsymtab (abfd); | |
6288 | break; | |
6289 | case MAP_STRTAB: | |
6290 | shndx = elf_tdata (abfd)->strtab_section; | |
6291 | break; | |
6292 | case MAP_SHSTRTAB: | |
6293 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6294 | break; | |
9ad5cbcf AM |
6295 | case MAP_SYM_SHNDX: |
6296 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6297 | break; | |
079e9a2f AM |
6298 | default: |
6299 | break; | |
6300 | } | |
6301 | } | |
6302 | else | |
6303 | { | |
6304 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6305 | |
079e9a2f AM |
6306 | if (shndx == -1) |
6307 | { | |
6308 | asection *sec2; | |
6309 | ||
6310 | /* Writing this would be a hell of a lot easier if | |
6311 | we had some decent documentation on bfd, and | |
6312 | knew what to expect of the library, and what to | |
6313 | demand of applications. For example, it | |
6314 | appears that `objcopy' might not set the | |
6315 | section of a symbol to be a section that is | |
6316 | actually in the output file. */ | |
6317 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6318 | if (sec2 == NULL) |
6319 | { | |
6320 | _bfd_error_handler (_("\ | |
6321 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6322 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6323 | sec->name); | |
811072d8 | 6324 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6325 | _bfd_stringtab_free (stt); |
589e6347 NC |
6326 | return FALSE; |
6327 | } | |
811072d8 | 6328 | |
079e9a2f AM |
6329 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6330 | BFD_ASSERT (shndx != -1); | |
6331 | } | |
6332 | } | |
252b5132 | 6333 | |
079e9a2f AM |
6334 | sym.st_shndx = shndx; |
6335 | } | |
252b5132 | 6336 | |
13ae64f3 JJ |
6337 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6338 | type = STT_TLS; | |
6339 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6340 | type = STT_FUNC; |
6341 | else if ((flags & BSF_OBJECT) != 0) | |
6342 | type = STT_OBJECT; | |
6343 | else | |
6344 | type = STT_NOTYPE; | |
252b5132 | 6345 | |
13ae64f3 JJ |
6346 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6347 | type = STT_TLS; | |
6348 | ||
589e6347 | 6349 | /* Processor-specific types. */ |
079e9a2f AM |
6350 | if (type_ptr != NULL |
6351 | && bed->elf_backend_get_symbol_type) | |
6352 | type = ((*bed->elf_backend_get_symbol_type) | |
6353 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6354 | |
079e9a2f AM |
6355 | if (flags & BSF_SECTION_SYM) |
6356 | { | |
6357 | if (flags & BSF_GLOBAL) | |
6358 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6359 | else | |
6360 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6361 | } | |
6362 | else if (bfd_is_com_section (syms[idx]->section)) | |
6363 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6364 | else if (bfd_is_und_section (syms[idx]->section)) | |
6365 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6366 | ? STB_WEAK | |
6367 | : STB_GLOBAL), | |
6368 | type); | |
6369 | else if (flags & BSF_FILE) | |
6370 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6371 | else | |
6372 | { | |
6373 | int bind = STB_LOCAL; | |
252b5132 | 6374 | |
079e9a2f AM |
6375 | if (flags & BSF_LOCAL) |
6376 | bind = STB_LOCAL; | |
6377 | else if (flags & BSF_WEAK) | |
6378 | bind = STB_WEAK; | |
6379 | else if (flags & BSF_GLOBAL) | |
6380 | bind = STB_GLOBAL; | |
252b5132 | 6381 | |
079e9a2f AM |
6382 | sym.st_info = ELF_ST_INFO (bind, type); |
6383 | } | |
252b5132 | 6384 | |
079e9a2f AM |
6385 | if (type_ptr != NULL) |
6386 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6387 | else | |
6388 | sym.st_other = 0; | |
252b5132 | 6389 | |
9ad5cbcf | 6390 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6391 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6392 | if (outbound_shndx != NULL) |
6393 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6394 | } |
252b5132 | 6395 | |
079e9a2f AM |
6396 | *sttp = stt; |
6397 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6398 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6399 | |
079e9a2f AM |
6400 | symstrtab_hdr->sh_flags = 0; |
6401 | symstrtab_hdr->sh_addr = 0; | |
6402 | symstrtab_hdr->sh_entsize = 0; | |
6403 | symstrtab_hdr->sh_link = 0; | |
6404 | symstrtab_hdr->sh_info = 0; | |
6405 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6406 | |
b34976b6 | 6407 | return TRUE; |
252b5132 RH |
6408 | } |
6409 | ||
6410 | /* Return the number of bytes required to hold the symtab vector. | |
6411 | ||
6412 | Note that we base it on the count plus 1, since we will null terminate | |
6413 | the vector allocated based on this size. However, the ELF symbol table | |
6414 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6415 | ||
6416 | long | |
217aa764 | 6417 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6418 | { |
6419 | long symcount; | |
6420 | long symtab_size; | |
6421 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6422 | ||
6423 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6424 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6425 | if (symcount > 0) | |
6426 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6427 | |
6428 | return symtab_size; | |
6429 | } | |
6430 | ||
6431 | long | |
217aa764 | 6432 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6433 | { |
6434 | long symcount; | |
6435 | long symtab_size; | |
6436 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6437 | ||
6438 | if (elf_dynsymtab (abfd) == 0) | |
6439 | { | |
6440 | bfd_set_error (bfd_error_invalid_operation); | |
6441 | return -1; | |
6442 | } | |
6443 | ||
6444 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6445 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6446 | if (symcount > 0) | |
6447 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6448 | |
6449 | return symtab_size; | |
6450 | } | |
6451 | ||
6452 | long | |
217aa764 AM |
6453 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6454 | sec_ptr asect) | |
252b5132 RH |
6455 | { |
6456 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6457 | } | |
6458 | ||
6459 | /* Canonicalize the relocs. */ | |
6460 | ||
6461 | long | |
217aa764 AM |
6462 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6463 | sec_ptr section, | |
6464 | arelent **relptr, | |
6465 | asymbol **symbols) | |
252b5132 RH |
6466 | { |
6467 | arelent *tblptr; | |
6468 | unsigned int i; | |
9c5bfbb7 | 6469 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6470 | |
b34976b6 | 6471 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6472 | return -1; |
6473 | ||
6474 | tblptr = section->relocation; | |
6475 | for (i = 0; i < section->reloc_count; i++) | |
6476 | *relptr++ = tblptr++; | |
6477 | ||
6478 | *relptr = NULL; | |
6479 | ||
6480 | return section->reloc_count; | |
6481 | } | |
6482 | ||
6483 | long | |
6cee3f79 | 6484 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6485 | { |
9c5bfbb7 | 6486 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6487 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6488 | |
6489 | if (symcount >= 0) | |
6490 | bfd_get_symcount (abfd) = symcount; | |
6491 | return symcount; | |
6492 | } | |
6493 | ||
6494 | long | |
217aa764 AM |
6495 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6496 | asymbol **allocation) | |
252b5132 | 6497 | { |
9c5bfbb7 | 6498 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6499 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6500 | |
6501 | if (symcount >= 0) | |
6502 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6503 | return symcount; | |
252b5132 RH |
6504 | } |
6505 | ||
8615f3f2 AM |
6506 | /* Return the size required for the dynamic reloc entries. Any loadable |
6507 | section that was actually installed in the BFD, and has type SHT_REL | |
6508 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6509 | dynamic reloc section. */ | |
252b5132 RH |
6510 | |
6511 | long | |
217aa764 | 6512 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6513 | { |
6514 | long ret; | |
6515 | asection *s; | |
6516 | ||
6517 | if (elf_dynsymtab (abfd) == 0) | |
6518 | { | |
6519 | bfd_set_error (bfd_error_invalid_operation); | |
6520 | return -1; | |
6521 | } | |
6522 | ||
6523 | ret = sizeof (arelent *); | |
6524 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6525 | if ((s->flags & SEC_LOAD) != 0 |
6526 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6527 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6528 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6529 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6530 | * sizeof (arelent *)); |
6531 | ||
6532 | return ret; | |
6533 | } | |
6534 | ||
8615f3f2 AM |
6535 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6536 | dynamic relocations as a single block, although they are actually | |
6537 | associated with particular sections; the interface, which was | |
6538 | designed for SunOS style shared libraries, expects that there is only | |
6539 | one set of dynamic relocs. Any loadable section that was actually | |
6540 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6541 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6542 | |
6543 | long | |
217aa764 AM |
6544 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6545 | arelent **storage, | |
6546 | asymbol **syms) | |
252b5132 | 6547 | { |
217aa764 | 6548 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6549 | asection *s; |
6550 | long ret; | |
6551 | ||
6552 | if (elf_dynsymtab (abfd) == 0) | |
6553 | { | |
6554 | bfd_set_error (bfd_error_invalid_operation); | |
6555 | return -1; | |
6556 | } | |
6557 | ||
6558 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6559 | ret = 0; | |
6560 | for (s = abfd->sections; s != NULL; s = s->next) | |
6561 | { | |
8615f3f2 AM |
6562 | if ((s->flags & SEC_LOAD) != 0 |
6563 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6564 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6565 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6566 | { | |
6567 | arelent *p; | |
6568 | long count, i; | |
6569 | ||
b34976b6 | 6570 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6571 | return -1; |
eea6121a | 6572 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6573 | p = s->relocation; |
6574 | for (i = 0; i < count; i++) | |
6575 | *storage++ = p++; | |
6576 | ret += count; | |
6577 | } | |
6578 | } | |
6579 | ||
6580 | *storage = NULL; | |
6581 | ||
6582 | return ret; | |
6583 | } | |
6584 | \f | |
6585 | /* Read in the version information. */ | |
6586 | ||
b34976b6 | 6587 | bfd_boolean |
fc0e6df6 | 6588 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6589 | { |
6590 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6591 | unsigned int freeidx = 0; |
6592 | ||
6593 | if (elf_dynverref (abfd) != 0) | |
6594 | { | |
6595 | Elf_Internal_Shdr *hdr; | |
6596 | Elf_External_Verneed *everneed; | |
6597 | Elf_Internal_Verneed *iverneed; | |
6598 | unsigned int i; | |
d0fb9a8d | 6599 | bfd_byte *contents_end; |
fc0e6df6 PB |
6600 | |
6601 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6602 | ||
d0fb9a8d JJ |
6603 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6604 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6605 | if (elf_tdata (abfd)->verref == NULL) |
6606 | goto error_return; | |
6607 | ||
6608 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6609 | ||
6610 | contents = bfd_malloc (hdr->sh_size); | |
6611 | if (contents == NULL) | |
d0fb9a8d JJ |
6612 | { |
6613 | error_return_verref: | |
6614 | elf_tdata (abfd)->verref = NULL; | |
6615 | elf_tdata (abfd)->cverrefs = 0; | |
6616 | goto error_return; | |
6617 | } | |
fc0e6df6 PB |
6618 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6619 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6620 | goto error_return_verref; |
fc0e6df6 | 6621 | |
d0fb9a8d JJ |
6622 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6623 | goto error_return_verref; | |
6624 | ||
6625 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6626 | == sizeof (Elf_External_Vernaux)); | |
6627 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6628 | everneed = (Elf_External_Verneed *) contents; |
6629 | iverneed = elf_tdata (abfd)->verref; | |
6630 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6631 | { | |
6632 | Elf_External_Vernaux *evernaux; | |
6633 | Elf_Internal_Vernaux *ivernaux; | |
6634 | unsigned int j; | |
6635 | ||
6636 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6637 | ||
6638 | iverneed->vn_bfd = abfd; | |
6639 | ||
6640 | iverneed->vn_filename = | |
6641 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6642 | iverneed->vn_file); | |
6643 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6644 | goto error_return_verref; |
fc0e6df6 | 6645 | |
d0fb9a8d JJ |
6646 | if (iverneed->vn_cnt == 0) |
6647 | iverneed->vn_auxptr = NULL; | |
6648 | else | |
6649 | { | |
6650 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6651 | sizeof (Elf_Internal_Vernaux)); | |
6652 | if (iverneed->vn_auxptr == NULL) | |
6653 | goto error_return_verref; | |
6654 | } | |
6655 | ||
6656 | if (iverneed->vn_aux | |
6657 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6658 | goto error_return_verref; | |
fc0e6df6 PB |
6659 | |
6660 | evernaux = ((Elf_External_Vernaux *) | |
6661 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6662 | ivernaux = iverneed->vn_auxptr; | |
6663 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6664 | { | |
6665 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6666 | ||
6667 | ivernaux->vna_nodename = | |
6668 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6669 | ivernaux->vna_name); | |
6670 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6671 | goto error_return_verref; |
fc0e6df6 PB |
6672 | |
6673 | if (j + 1 < iverneed->vn_cnt) | |
6674 | ivernaux->vna_nextptr = ivernaux + 1; | |
6675 | else | |
6676 | ivernaux->vna_nextptr = NULL; | |
6677 | ||
d0fb9a8d JJ |
6678 | if (ivernaux->vna_next |
6679 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6680 | goto error_return_verref; | |
6681 | ||
fc0e6df6 PB |
6682 | evernaux = ((Elf_External_Vernaux *) |
6683 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6684 | ||
6685 | if (ivernaux->vna_other > freeidx) | |
6686 | freeidx = ivernaux->vna_other; | |
6687 | } | |
6688 | ||
6689 | if (i + 1 < hdr->sh_info) | |
6690 | iverneed->vn_nextref = iverneed + 1; | |
6691 | else | |
6692 | iverneed->vn_nextref = NULL; | |
6693 | ||
d0fb9a8d JJ |
6694 | if (iverneed->vn_next |
6695 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6696 | goto error_return_verref; | |
6697 | ||
fc0e6df6 PB |
6698 | everneed = ((Elf_External_Verneed *) |
6699 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6700 | } | |
6701 | ||
6702 | free (contents); | |
6703 | contents = NULL; | |
6704 | } | |
252b5132 RH |
6705 | |
6706 | if (elf_dynverdef (abfd) != 0) | |
6707 | { | |
6708 | Elf_Internal_Shdr *hdr; | |
6709 | Elf_External_Verdef *everdef; | |
6710 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6711 | Elf_Internal_Verdef *iverdefarr; |
6712 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6713 | unsigned int i; |
062e2358 | 6714 | unsigned int maxidx; |
d0fb9a8d | 6715 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6716 | |
6717 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6718 | ||
217aa764 | 6719 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6720 | if (contents == NULL) |
6721 | goto error_return; | |
6722 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6723 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6724 | goto error_return; |
6725 | ||
d0fb9a8d JJ |
6726 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6727 | goto error_return; | |
6728 | ||
6729 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6730 | >= sizeof (Elf_External_Verdaux)); | |
6731 | contents_end_def = contents + hdr->sh_size | |
6732 | - sizeof (Elf_External_Verdef); | |
6733 | contents_end_aux = contents + hdr->sh_size | |
6734 | - sizeof (Elf_External_Verdaux); | |
6735 | ||
f631889e UD |
6736 | /* We know the number of entries in the section but not the maximum |
6737 | index. Therefore we have to run through all entries and find | |
6738 | the maximum. */ | |
252b5132 | 6739 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6740 | maxidx = 0; |
6741 | for (i = 0; i < hdr->sh_info; ++i) | |
6742 | { | |
6743 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6744 | ||
062e2358 AM |
6745 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6746 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6747 | |
d0fb9a8d JJ |
6748 | if (iverdefmem.vd_next |
6749 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6750 | goto error_return; | |
6751 | ||
f631889e UD |
6752 | everdef = ((Elf_External_Verdef *) |
6753 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6754 | } | |
6755 | ||
fc0e6df6 PB |
6756 | if (default_imported_symver) |
6757 | { | |
6758 | if (freeidx > maxidx) | |
6759 | maxidx = ++freeidx; | |
6760 | else | |
6761 | freeidx = ++maxidx; | |
6762 | } | |
d0fb9a8d JJ |
6763 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6764 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6765 | if (elf_tdata (abfd)->verdef == NULL) |
6766 | goto error_return; | |
6767 | ||
6768 | elf_tdata (abfd)->cverdefs = maxidx; | |
6769 | ||
6770 | everdef = (Elf_External_Verdef *) contents; | |
6771 | iverdefarr = elf_tdata (abfd)->verdef; | |
6772 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6773 | { |
6774 | Elf_External_Verdaux *everdaux; | |
6775 | Elf_Internal_Verdaux *iverdaux; | |
6776 | unsigned int j; | |
6777 | ||
f631889e UD |
6778 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6779 | ||
d0fb9a8d JJ |
6780 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6781 | { | |
6782 | error_return_verdef: | |
6783 | elf_tdata (abfd)->verdef = NULL; | |
6784 | elf_tdata (abfd)->cverdefs = 0; | |
6785 | goto error_return; | |
6786 | } | |
6787 | ||
f631889e UD |
6788 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6789 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6790 | |
6791 | iverdef->vd_bfd = abfd; | |
6792 | ||
d0fb9a8d JJ |
6793 | if (iverdef->vd_cnt == 0) |
6794 | iverdef->vd_auxptr = NULL; | |
6795 | else | |
6796 | { | |
6797 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6798 | sizeof (Elf_Internal_Verdaux)); | |
6799 | if (iverdef->vd_auxptr == NULL) | |
6800 | goto error_return_verdef; | |
6801 | } | |
6802 | ||
6803 | if (iverdef->vd_aux | |
6804 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6805 | goto error_return_verdef; | |
252b5132 RH |
6806 | |
6807 | everdaux = ((Elf_External_Verdaux *) | |
6808 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6809 | iverdaux = iverdef->vd_auxptr; | |
6810 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6811 | { | |
6812 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6813 | ||
6814 | iverdaux->vda_nodename = | |
6815 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6816 | iverdaux->vda_name); | |
6817 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6818 | goto error_return_verdef; |
252b5132 RH |
6819 | |
6820 | if (j + 1 < iverdef->vd_cnt) | |
6821 | iverdaux->vda_nextptr = iverdaux + 1; | |
6822 | else | |
6823 | iverdaux->vda_nextptr = NULL; | |
6824 | ||
d0fb9a8d JJ |
6825 | if (iverdaux->vda_next |
6826 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6827 | goto error_return_verdef; | |
6828 | ||
252b5132 RH |
6829 | everdaux = ((Elf_External_Verdaux *) |
6830 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6831 | } | |
6832 | ||
d0fb9a8d JJ |
6833 | if (iverdef->vd_cnt) |
6834 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6835 | |
d0fb9a8d | 6836 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6837 | iverdef->vd_nextdef = iverdef + 1; |
6838 | else | |
6839 | iverdef->vd_nextdef = NULL; | |
6840 | ||
6841 | everdef = ((Elf_External_Verdef *) | |
6842 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6843 | } | |
6844 | ||
6845 | free (contents); | |
6846 | contents = NULL; | |
6847 | } | |
fc0e6df6 | 6848 | else if (default_imported_symver) |
252b5132 | 6849 | { |
fc0e6df6 PB |
6850 | if (freeidx < 3) |
6851 | freeidx = 3; | |
6852 | else | |
6853 | freeidx++; | |
252b5132 | 6854 | |
d0fb9a8d JJ |
6855 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6856 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6857 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6858 | goto error_return; |
6859 | ||
fc0e6df6 PB |
6860 | elf_tdata (abfd)->cverdefs = freeidx; |
6861 | } | |
252b5132 | 6862 | |
fc0e6df6 PB |
6863 | /* Create a default version based on the soname. */ |
6864 | if (default_imported_symver) | |
6865 | { | |
6866 | Elf_Internal_Verdef *iverdef; | |
6867 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6868 | |
fc0e6df6 | 6869 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6870 | |
fc0e6df6 PB |
6871 | iverdef->vd_version = VER_DEF_CURRENT; |
6872 | iverdef->vd_flags = 0; | |
6873 | iverdef->vd_ndx = freeidx; | |
6874 | iverdef->vd_cnt = 1; | |
252b5132 | 6875 | |
fc0e6df6 | 6876 | iverdef->vd_bfd = abfd; |
252b5132 | 6877 | |
fc0e6df6 PB |
6878 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6879 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6880 | goto error_return_verdef; |
fc0e6df6 | 6881 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6882 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6883 | if (iverdef->vd_auxptr == NULL) | |
6884 | goto error_return_verdef; | |
252b5132 | 6885 | |
fc0e6df6 PB |
6886 | iverdaux = iverdef->vd_auxptr; |
6887 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6888 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6889 | } |
6890 | ||
b34976b6 | 6891 | return TRUE; |
252b5132 RH |
6892 | |
6893 | error_return: | |
5ed6aba4 | 6894 | if (contents != NULL) |
252b5132 | 6895 | free (contents); |
b34976b6 | 6896 | return FALSE; |
252b5132 RH |
6897 | } |
6898 | \f | |
6899 | asymbol * | |
217aa764 | 6900 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6901 | { |
6902 | elf_symbol_type *newsym; | |
dc810e39 | 6903 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6904 | |
217aa764 | 6905 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6906 | if (!newsym) |
6907 | return NULL; | |
6908 | else | |
6909 | { | |
6910 | newsym->symbol.the_bfd = abfd; | |
6911 | return &newsym->symbol; | |
6912 | } | |
6913 | } | |
6914 | ||
6915 | void | |
217aa764 AM |
6916 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6917 | asymbol *symbol, | |
6918 | symbol_info *ret) | |
252b5132 RH |
6919 | { |
6920 | bfd_symbol_info (symbol, ret); | |
6921 | } | |
6922 | ||
6923 | /* Return whether a symbol name implies a local symbol. Most targets | |
6924 | use this function for the is_local_label_name entry point, but some | |
6925 | override it. */ | |
6926 | ||
b34976b6 | 6927 | bfd_boolean |
217aa764 AM |
6928 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6929 | const char *name) | |
252b5132 RH |
6930 | { |
6931 | /* Normal local symbols start with ``.L''. */ | |
6932 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6933 | return TRUE; |
252b5132 RH |
6934 | |
6935 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6936 | DWARF debugging symbols starting with ``..''. */ | |
6937 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6938 | return TRUE; |
252b5132 RH |
6939 | |
6940 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6941 | emitting DWARF debugging output. I suspect this is actually a | |
6942 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6943 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6944 | underscore to be emitted on some ELF targets). For ease of use, | |
6945 | we treat such symbols as local. */ | |
6946 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6947 | return TRUE; |
252b5132 | 6948 | |
b34976b6 | 6949 | return FALSE; |
252b5132 RH |
6950 | } |
6951 | ||
6952 | alent * | |
217aa764 AM |
6953 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6954 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6955 | { |
6956 | abort (); | |
6957 | return NULL; | |
6958 | } | |
6959 | ||
b34976b6 | 6960 | bfd_boolean |
217aa764 AM |
6961 | _bfd_elf_set_arch_mach (bfd *abfd, |
6962 | enum bfd_architecture arch, | |
6963 | unsigned long machine) | |
252b5132 RH |
6964 | { |
6965 | /* If this isn't the right architecture for this backend, and this | |
6966 | isn't the generic backend, fail. */ | |
6967 | if (arch != get_elf_backend_data (abfd)->arch | |
6968 | && arch != bfd_arch_unknown | |
6969 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6970 | return FALSE; |
252b5132 RH |
6971 | |
6972 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6973 | } | |
6974 | ||
d1fad7c6 NC |
6975 | /* Find the function to a particular section and offset, |
6976 | for error reporting. */ | |
252b5132 | 6977 | |
b34976b6 | 6978 | static bfd_boolean |
217aa764 AM |
6979 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6980 | asection *section, | |
6981 | asymbol **symbols, | |
6982 | bfd_vma offset, | |
6983 | const char **filename_ptr, | |
6984 | const char **functionname_ptr) | |
252b5132 | 6985 | { |
252b5132 | 6986 | const char *filename; |
57426232 | 6987 | asymbol *func, *file; |
252b5132 RH |
6988 | bfd_vma low_func; |
6989 | asymbol **p; | |
57426232 JB |
6990 | /* ??? Given multiple file symbols, it is impossible to reliably |
6991 | choose the right file name for global symbols. File symbols are | |
6992 | local symbols, and thus all file symbols must sort before any | |
6993 | global symbols. The ELF spec may be interpreted to say that a | |
6994 | file symbol must sort before other local symbols, but currently | |
6995 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6996 | make a better choice of file name for local symbols by ignoring | |
6997 | file symbols appearing after a given local symbol. */ | |
6998 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6999 | |
252b5132 RH |
7000 | filename = NULL; |
7001 | func = NULL; | |
57426232 | 7002 | file = NULL; |
252b5132 | 7003 | low_func = 0; |
57426232 | 7004 | state = nothing_seen; |
252b5132 RH |
7005 | |
7006 | for (p = symbols; *p != NULL; p++) | |
7007 | { | |
7008 | elf_symbol_type *q; | |
7009 | ||
7010 | q = (elf_symbol_type *) *p; | |
7011 | ||
252b5132 RH |
7012 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
7013 | { | |
7014 | default: | |
7015 | break; | |
7016 | case STT_FILE: | |
57426232 JB |
7017 | file = &q->symbol; |
7018 | if (state == symbol_seen) | |
7019 | state = file_after_symbol_seen; | |
7020 | continue; | |
252b5132 RH |
7021 | case STT_NOTYPE: |
7022 | case STT_FUNC: | |
6b40fcba | 7023 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7024 | && q->symbol.value >= low_func |
7025 | && q->symbol.value <= offset) | |
7026 | { | |
7027 | func = (asymbol *) q; | |
7028 | low_func = q->symbol.value; | |
a1923858 AM |
7029 | filename = NULL; |
7030 | if (file != NULL | |
7031 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7032 | || state != file_after_symbol_seen)) | |
57426232 | 7033 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7034 | } |
7035 | break; | |
7036 | } | |
57426232 JB |
7037 | if (state == nothing_seen) |
7038 | state = symbol_seen; | |
252b5132 RH |
7039 | } |
7040 | ||
7041 | if (func == NULL) | |
b34976b6 | 7042 | return FALSE; |
252b5132 | 7043 | |
d1fad7c6 NC |
7044 | if (filename_ptr) |
7045 | *filename_ptr = filename; | |
7046 | if (functionname_ptr) | |
7047 | *functionname_ptr = bfd_asymbol_name (func); | |
7048 | ||
b34976b6 | 7049 | return TRUE; |
d1fad7c6 NC |
7050 | } |
7051 | ||
7052 | /* Find the nearest line to a particular section and offset, | |
7053 | for error reporting. */ | |
7054 | ||
b34976b6 | 7055 | bfd_boolean |
217aa764 AM |
7056 | _bfd_elf_find_nearest_line (bfd *abfd, |
7057 | asection *section, | |
7058 | asymbol **symbols, | |
7059 | bfd_vma offset, | |
7060 | const char **filename_ptr, | |
7061 | const char **functionname_ptr, | |
7062 | unsigned int *line_ptr) | |
d1fad7c6 | 7063 | { |
b34976b6 | 7064 | bfd_boolean found; |
d1fad7c6 NC |
7065 | |
7066 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7067 | filename_ptr, functionname_ptr, |
7068 | line_ptr)) | |
d1fad7c6 NC |
7069 | { |
7070 | if (!*functionname_ptr) | |
4e8a9624 AM |
7071 | elf_find_function (abfd, section, symbols, offset, |
7072 | *filename_ptr ? NULL : filename_ptr, | |
7073 | functionname_ptr); | |
7074 | ||
b34976b6 | 7075 | return TRUE; |
d1fad7c6 NC |
7076 | } |
7077 | ||
7078 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7079 | filename_ptr, functionname_ptr, |
7080 | line_ptr, 0, | |
7081 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7082 | { |
7083 | if (!*functionname_ptr) | |
4e8a9624 AM |
7084 | elf_find_function (abfd, section, symbols, offset, |
7085 | *filename_ptr ? NULL : filename_ptr, | |
7086 | functionname_ptr); | |
7087 | ||
b34976b6 | 7088 | return TRUE; |
d1fad7c6 NC |
7089 | } |
7090 | ||
7091 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7092 | &found, filename_ptr, |
7093 | functionname_ptr, line_ptr, | |
7094 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7095 | return FALSE; |
dc43ada5 | 7096 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7097 | return TRUE; |
d1fad7c6 NC |
7098 | |
7099 | if (symbols == NULL) | |
b34976b6 | 7100 | return FALSE; |
d1fad7c6 NC |
7101 | |
7102 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7103 | filename_ptr, functionname_ptr)) |
b34976b6 | 7104 | return FALSE; |
d1fad7c6 | 7105 | |
252b5132 | 7106 | *line_ptr = 0; |
b34976b6 | 7107 | return TRUE; |
252b5132 RH |
7108 | } |
7109 | ||
5420f73d L |
7110 | /* Find the line for a symbol. */ |
7111 | ||
7112 | bfd_boolean | |
7113 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7114 | const char **filename_ptr, unsigned int *line_ptr) | |
7115 | { | |
7116 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7117 | filename_ptr, line_ptr, 0, | |
7118 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7119 | } | |
7120 | ||
4ab527b0 FF |
7121 | /* After a call to bfd_find_nearest_line, successive calls to |
7122 | bfd_find_inliner_info can be used to get source information about | |
7123 | each level of function inlining that terminated at the address | |
7124 | passed to bfd_find_nearest_line. Currently this is only supported | |
7125 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7126 | ||
7127 | bfd_boolean | |
7128 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7129 | const char **filename_ptr, | |
7130 | const char **functionname_ptr, | |
7131 | unsigned int *line_ptr) | |
7132 | { | |
7133 | bfd_boolean found; | |
7134 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7135 | functionname_ptr, line_ptr, | |
7136 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7137 | return found; | |
7138 | } | |
7139 | ||
252b5132 | 7140 | int |
a6b96beb | 7141 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7142 | { |
8ded5a0f AM |
7143 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7144 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7145 | |
a6b96beb | 7146 | if (!info->relocatable) |
8ded5a0f | 7147 | { |
62d7a5f6 | 7148 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7149 | |
62d7a5f6 AM |
7150 | if (phdr_size == (bfd_size_type) -1) |
7151 | { | |
7152 | struct elf_segment_map *m; | |
7153 | ||
7154 | phdr_size = 0; | |
7155 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7156 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7157 | |
62d7a5f6 AM |
7158 | if (phdr_size == 0) |
7159 | phdr_size = get_program_header_size (abfd, info); | |
7160 | } | |
8ded5a0f AM |
7161 | |
7162 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7163 | ret += phdr_size; | |
7164 | } | |
7165 | ||
252b5132 RH |
7166 | return ret; |
7167 | } | |
7168 | ||
b34976b6 | 7169 | bfd_boolean |
217aa764 AM |
7170 | _bfd_elf_set_section_contents (bfd *abfd, |
7171 | sec_ptr section, | |
0f867abe | 7172 | const void *location, |
217aa764 AM |
7173 | file_ptr offset, |
7174 | bfd_size_type count) | |
252b5132 RH |
7175 | { |
7176 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7177 | bfd_signed_vma pos; |
252b5132 RH |
7178 | |
7179 | if (! abfd->output_has_begun | |
217aa764 | 7180 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7181 | return FALSE; |
252b5132 RH |
7182 | |
7183 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7184 | pos = hdr->sh_offset + offset; |
7185 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7186 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7187 | return FALSE; |
252b5132 | 7188 | |
b34976b6 | 7189 | return TRUE; |
252b5132 RH |
7190 | } |
7191 | ||
7192 | void | |
217aa764 AM |
7193 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7194 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7195 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7196 | { |
7197 | abort (); | |
7198 | } | |
7199 | ||
252b5132 RH |
7200 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7201 | ||
b34976b6 | 7202 | bfd_boolean |
217aa764 | 7203 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7204 | { |
c044fabd | 7205 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7206 | |
7207 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7208 | { | |
7209 | bfd_reloc_code_real_type code; | |
7210 | reloc_howto_type *howto; | |
7211 | ||
7212 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7213 | equivalent ELF reloc. */ |
252b5132 RH |
7214 | |
7215 | if (areloc->howto->pc_relative) | |
7216 | { | |
7217 | switch (areloc->howto->bitsize) | |
7218 | { | |
7219 | case 8: | |
7220 | code = BFD_RELOC_8_PCREL; | |
7221 | break; | |
7222 | case 12: | |
7223 | code = BFD_RELOC_12_PCREL; | |
7224 | break; | |
7225 | case 16: | |
7226 | code = BFD_RELOC_16_PCREL; | |
7227 | break; | |
7228 | case 24: | |
7229 | code = BFD_RELOC_24_PCREL; | |
7230 | break; | |
7231 | case 32: | |
7232 | code = BFD_RELOC_32_PCREL; | |
7233 | break; | |
7234 | case 64: | |
7235 | code = BFD_RELOC_64_PCREL; | |
7236 | break; | |
7237 | default: | |
7238 | goto fail; | |
7239 | } | |
7240 | ||
7241 | howto = bfd_reloc_type_lookup (abfd, code); | |
7242 | ||
7243 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7244 | { | |
7245 | if (howto->pcrel_offset) | |
7246 | areloc->addend += areloc->address; | |
7247 | else | |
7248 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7249 | } | |
7250 | } | |
7251 | else | |
7252 | { | |
7253 | switch (areloc->howto->bitsize) | |
7254 | { | |
7255 | case 8: | |
7256 | code = BFD_RELOC_8; | |
7257 | break; | |
7258 | case 14: | |
7259 | code = BFD_RELOC_14; | |
7260 | break; | |
7261 | case 16: | |
7262 | code = BFD_RELOC_16; | |
7263 | break; | |
7264 | case 26: | |
7265 | code = BFD_RELOC_26; | |
7266 | break; | |
7267 | case 32: | |
7268 | code = BFD_RELOC_32; | |
7269 | break; | |
7270 | case 64: | |
7271 | code = BFD_RELOC_64; | |
7272 | break; | |
7273 | default: | |
7274 | goto fail; | |
7275 | } | |
7276 | ||
7277 | howto = bfd_reloc_type_lookup (abfd, code); | |
7278 | } | |
7279 | ||
7280 | if (howto) | |
7281 | areloc->howto = howto; | |
7282 | else | |
7283 | goto fail; | |
7284 | } | |
7285 | ||
b34976b6 | 7286 | return TRUE; |
252b5132 RH |
7287 | |
7288 | fail: | |
7289 | (*_bfd_error_handler) | |
d003868e AM |
7290 | (_("%B: unsupported relocation type %s"), |
7291 | abfd, areloc->howto->name); | |
252b5132 | 7292 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7293 | return FALSE; |
252b5132 RH |
7294 | } |
7295 | ||
b34976b6 | 7296 | bfd_boolean |
217aa764 | 7297 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7298 | { |
7299 | if (bfd_get_format (abfd) == bfd_object) | |
7300 | { | |
b25e3d87 | 7301 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7302 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7303 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7304 | } |
7305 | ||
7306 | return _bfd_generic_close_and_cleanup (abfd); | |
7307 | } | |
7308 | ||
7309 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7310 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7311 | range-checking to interfere. There is nothing else to do in processing | |
7312 | this reloc. */ | |
7313 | ||
7314 | bfd_reloc_status_type | |
217aa764 AM |
7315 | _bfd_elf_rel_vtable_reloc_fn |
7316 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7317 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7318 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7319 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7320 | { |
7321 | return bfd_reloc_ok; | |
7322 | } | |
252b5132 RH |
7323 | \f |
7324 | /* Elf core file support. Much of this only works on native | |
7325 | toolchains, since we rely on knowing the | |
7326 | machine-dependent procfs structure in order to pick | |
c044fabd | 7327 | out details about the corefile. */ |
252b5132 RH |
7328 | |
7329 | #ifdef HAVE_SYS_PROCFS_H | |
7330 | # include <sys/procfs.h> | |
7331 | #endif | |
7332 | ||
c044fabd | 7333 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7334 | |
7335 | static int | |
217aa764 | 7336 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7337 | { |
7338 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7339 | + (elf_tdata (abfd)->core_pid)); | |
7340 | } | |
7341 | ||
252b5132 RH |
7342 | /* If there isn't a section called NAME, make one, using |
7343 | data from SECT. Note, this function will generate a | |
7344 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7345 | overwrite it. */ |
252b5132 | 7346 | |
b34976b6 | 7347 | static bfd_boolean |
217aa764 | 7348 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7349 | { |
c044fabd | 7350 | asection *sect2; |
252b5132 RH |
7351 | |
7352 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7353 | return TRUE; |
252b5132 | 7354 | |
117ed4f8 | 7355 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7356 | if (sect2 == NULL) |
b34976b6 | 7357 | return FALSE; |
252b5132 | 7358 | |
eea6121a | 7359 | sect2->size = sect->size; |
252b5132 | 7360 | sect2->filepos = sect->filepos; |
252b5132 | 7361 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7362 | return TRUE; |
252b5132 RH |
7363 | } |
7364 | ||
bb0082d6 AM |
7365 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7366 | actually creates up to two pseudosections: | |
7367 | - For the single-threaded case, a section named NAME, unless | |
7368 | such a section already exists. | |
7369 | - For the multi-threaded case, a section named "NAME/PID", where | |
7370 | PID is elfcore_make_pid (abfd). | |
7371 | Both pseudosections have identical contents. */ | |
b34976b6 | 7372 | bfd_boolean |
217aa764 AM |
7373 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7374 | char *name, | |
7375 | size_t size, | |
7376 | ufile_ptr filepos) | |
bb0082d6 AM |
7377 | { |
7378 | char buf[100]; | |
7379 | char *threaded_name; | |
d4c88bbb | 7380 | size_t len; |
bb0082d6 AM |
7381 | asection *sect; |
7382 | ||
7383 | /* Build the section name. */ | |
7384 | ||
7385 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7386 | len = strlen (buf) + 1; |
217aa764 | 7387 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7388 | if (threaded_name == NULL) |
b34976b6 | 7389 | return FALSE; |
d4c88bbb | 7390 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7391 | |
117ed4f8 AM |
7392 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7393 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7394 | if (sect == NULL) |
b34976b6 | 7395 | return FALSE; |
eea6121a | 7396 | sect->size = size; |
bb0082d6 | 7397 | sect->filepos = filepos; |
bb0082d6 AM |
7398 | sect->alignment_power = 2; |
7399 | ||
936e320b | 7400 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7401 | } |
7402 | ||
252b5132 | 7403 | /* prstatus_t exists on: |
4a938328 | 7404 | solaris 2.5+ |
252b5132 RH |
7405 | linux 2.[01] + glibc |
7406 | unixware 4.2 | |
7407 | */ | |
7408 | ||
7409 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7410 | |
b34976b6 | 7411 | static bfd_boolean |
217aa764 | 7412 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7413 | { |
eea6121a | 7414 | size_t size; |
7ee38065 | 7415 | int offset; |
252b5132 | 7416 | |
4a938328 MS |
7417 | if (note->descsz == sizeof (prstatus_t)) |
7418 | { | |
7419 | prstatus_t prstat; | |
252b5132 | 7420 | |
eea6121a | 7421 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7422 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7423 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7424 | |
fa49d224 NC |
7425 | /* Do not overwrite the core signal if it |
7426 | has already been set by another thread. */ | |
7427 | if (elf_tdata (abfd)->core_signal == 0) | |
7428 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7429 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7430 | |
4a938328 MS |
7431 | /* pr_who exists on: |
7432 | solaris 2.5+ | |
7433 | unixware 4.2 | |
7434 | pr_who doesn't exist on: | |
7435 | linux 2.[01] | |
7436 | */ | |
252b5132 | 7437 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7438 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7439 | #endif |
4a938328 | 7440 | } |
7ee38065 | 7441 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7442 | else if (note->descsz == sizeof (prstatus32_t)) |
7443 | { | |
7444 | /* 64-bit host, 32-bit corefile */ | |
7445 | prstatus32_t prstat; | |
7446 | ||
eea6121a | 7447 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7448 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7449 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7450 | ||
fa49d224 NC |
7451 | /* Do not overwrite the core signal if it |
7452 | has already been set by another thread. */ | |
7453 | if (elf_tdata (abfd)->core_signal == 0) | |
7454 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7455 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7456 | ||
7457 | /* pr_who exists on: | |
7458 | solaris 2.5+ | |
7459 | unixware 4.2 | |
7460 | pr_who doesn't exist on: | |
7461 | linux 2.[01] | |
7462 | */ | |
7ee38065 | 7463 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7464 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7465 | #endif | |
7466 | } | |
7ee38065 | 7467 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7468 | else |
7469 | { | |
7470 | /* Fail - we don't know how to handle any other | |
7471 | note size (ie. data object type). */ | |
b34976b6 | 7472 | return TRUE; |
4a938328 | 7473 | } |
252b5132 | 7474 | |
bb0082d6 | 7475 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7476 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7477 | size, note->descpos + offset); |
252b5132 RH |
7478 | } |
7479 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7480 | ||
bb0082d6 | 7481 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7482 | static bfd_boolean |
217aa764 AM |
7483 | elfcore_make_note_pseudosection (bfd *abfd, |
7484 | char *name, | |
7485 | Elf_Internal_Note *note) | |
252b5132 | 7486 | { |
936e320b AM |
7487 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7488 | note->descsz, note->descpos); | |
252b5132 RH |
7489 | } |
7490 | ||
ff08c6bb JB |
7491 | /* There isn't a consistent prfpregset_t across platforms, |
7492 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7493 | data structure apart. */ |
7494 | ||
b34976b6 | 7495 | static bfd_boolean |
217aa764 | 7496 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7497 | { |
7498 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7499 | } | |
7500 | ||
ff08c6bb JB |
7501 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7502 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7503 | literally. */ | |
c044fabd | 7504 | |
b34976b6 | 7505 | static bfd_boolean |
217aa764 | 7506 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7507 | { |
7508 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7509 | } | |
7510 | ||
252b5132 | 7511 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7512 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7513 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7514 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7515 | #endif | |
252b5132 RH |
7516 | #endif |
7517 | ||
7518 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7519 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7520 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7521 | typedef psinfo32_t elfcore_psinfo32_t; |
7522 | #endif | |
252b5132 RH |
7523 | #endif |
7524 | ||
252b5132 RH |
7525 | /* return a malloc'ed copy of a string at START which is at |
7526 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7527 | the copy will always have a terminating '\0'. */ |
252b5132 | 7528 | |
936e320b | 7529 | char * |
217aa764 | 7530 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7531 | { |
dc810e39 | 7532 | char *dups; |
c044fabd | 7533 | char *end = memchr (start, '\0', max); |
dc810e39 | 7534 | size_t len; |
252b5132 RH |
7535 | |
7536 | if (end == NULL) | |
7537 | len = max; | |
7538 | else | |
7539 | len = end - start; | |
7540 | ||
217aa764 | 7541 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7542 | if (dups == NULL) |
252b5132 RH |
7543 | return NULL; |
7544 | ||
dc810e39 AM |
7545 | memcpy (dups, start, len); |
7546 | dups[len] = '\0'; | |
252b5132 | 7547 | |
dc810e39 | 7548 | return dups; |
252b5132 RH |
7549 | } |
7550 | ||
bb0082d6 | 7551 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7552 | static bfd_boolean |
217aa764 | 7553 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7554 | { |
4a938328 MS |
7555 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7556 | { | |
7557 | elfcore_psinfo_t psinfo; | |
252b5132 | 7558 | |
7ee38065 | 7559 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7560 | |
4a938328 | 7561 | elf_tdata (abfd)->core_program |
936e320b AM |
7562 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7563 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7564 | |
4a938328 | 7565 | elf_tdata (abfd)->core_command |
936e320b AM |
7566 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7567 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7568 | } |
7ee38065 | 7569 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7570 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7571 | { | |
7572 | /* 64-bit host, 32-bit corefile */ | |
7573 | elfcore_psinfo32_t psinfo; | |
7574 | ||
7ee38065 | 7575 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7576 | |
4a938328 | 7577 | elf_tdata (abfd)->core_program |
936e320b AM |
7578 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7579 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7580 | |
7581 | elf_tdata (abfd)->core_command | |
936e320b AM |
7582 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7583 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7584 | } |
7585 | #endif | |
7586 | ||
7587 | else | |
7588 | { | |
7589 | /* Fail - we don't know how to handle any other | |
7590 | note size (ie. data object type). */ | |
b34976b6 | 7591 | return TRUE; |
4a938328 | 7592 | } |
252b5132 RH |
7593 | |
7594 | /* Note that for some reason, a spurious space is tacked | |
7595 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7596 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7597 | |
7598 | { | |
c044fabd | 7599 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7600 | int n = strlen (command); |
7601 | ||
7602 | if (0 < n && command[n - 1] == ' ') | |
7603 | command[n - 1] = '\0'; | |
7604 | } | |
7605 | ||
b34976b6 | 7606 | return TRUE; |
252b5132 RH |
7607 | } |
7608 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7609 | ||
252b5132 | 7610 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7611 | static bfd_boolean |
217aa764 | 7612 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7613 | { |
f572a39d AM |
7614 | if (note->descsz == sizeof (pstatus_t) |
7615 | #if defined (HAVE_PXSTATUS_T) | |
7616 | || note->descsz == sizeof (pxstatus_t) | |
7617 | #endif | |
7618 | ) | |
4a938328 MS |
7619 | { |
7620 | pstatus_t pstat; | |
252b5132 | 7621 | |
4a938328 | 7622 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7623 | |
4a938328 MS |
7624 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7625 | } | |
7ee38065 | 7626 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7627 | else if (note->descsz == sizeof (pstatus32_t)) |
7628 | { | |
7629 | /* 64-bit host, 32-bit corefile */ | |
7630 | pstatus32_t pstat; | |
252b5132 | 7631 | |
4a938328 | 7632 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7633 | |
4a938328 MS |
7634 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7635 | } | |
7636 | #endif | |
252b5132 RH |
7637 | /* Could grab some more details from the "representative" |
7638 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7639 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7640 | |
b34976b6 | 7641 | return TRUE; |
252b5132 RH |
7642 | } |
7643 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7644 | ||
252b5132 | 7645 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7646 | static bfd_boolean |
217aa764 | 7647 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7648 | { |
7649 | lwpstatus_t lwpstat; | |
7650 | char buf[100]; | |
c044fabd | 7651 | char *name; |
d4c88bbb | 7652 | size_t len; |
c044fabd | 7653 | asection *sect; |
252b5132 | 7654 | |
f572a39d AM |
7655 | if (note->descsz != sizeof (lwpstat) |
7656 | #if defined (HAVE_LWPXSTATUS_T) | |
7657 | && note->descsz != sizeof (lwpxstatus_t) | |
7658 | #endif | |
7659 | ) | |
b34976b6 | 7660 | return TRUE; |
252b5132 RH |
7661 | |
7662 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7663 | ||
7664 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7665 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7666 | ||
c044fabd | 7667 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7668 | |
7669 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7670 | len = strlen (buf) + 1; |
217aa764 | 7671 | name = bfd_alloc (abfd, len); |
252b5132 | 7672 | if (name == NULL) |
b34976b6 | 7673 | return FALSE; |
d4c88bbb | 7674 | memcpy (name, buf, len); |
252b5132 | 7675 | |
117ed4f8 | 7676 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7677 | if (sect == NULL) |
b34976b6 | 7678 | return FALSE; |
252b5132 RH |
7679 | |
7680 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7681 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7682 | sect->filepos = note->descpos |
7683 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7684 | #endif | |
7685 | ||
7686 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7687 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7688 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7689 | #endif | |
7690 | ||
252b5132 RH |
7691 | sect->alignment_power = 2; |
7692 | ||
7693 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7694 | return FALSE; |
252b5132 RH |
7695 | |
7696 | /* Make a ".reg2/999" section */ | |
7697 | ||
7698 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7699 | len = strlen (buf) + 1; |
217aa764 | 7700 | name = bfd_alloc (abfd, len); |
252b5132 | 7701 | if (name == NULL) |
b34976b6 | 7702 | return FALSE; |
d4c88bbb | 7703 | memcpy (name, buf, len); |
252b5132 | 7704 | |
117ed4f8 | 7705 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7706 | if (sect == NULL) |
b34976b6 | 7707 | return FALSE; |
252b5132 RH |
7708 | |
7709 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7710 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7711 | sect->filepos = note->descpos |
7712 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7713 | #endif | |
7714 | ||
7715 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7716 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7717 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7718 | #endif | |
7719 | ||
252b5132 RH |
7720 | sect->alignment_power = 2; |
7721 | ||
936e320b | 7722 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7723 | } |
7724 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7725 | ||
16e9c715 | 7726 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7727 | static bfd_boolean |
217aa764 | 7728 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7729 | { |
7730 | char buf[30]; | |
c044fabd | 7731 | char *name; |
d4c88bbb | 7732 | size_t len; |
c044fabd | 7733 | asection *sect; |
16e9c715 NC |
7734 | win32_pstatus_t pstatus; |
7735 | ||
7736 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7737 | return TRUE; |
16e9c715 | 7738 | |
e8eab623 | 7739 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7740 | |
7741 | switch (pstatus.data_type) | |
16e9c715 NC |
7742 | { |
7743 | case NOTE_INFO_PROCESS: | |
7744 | /* FIXME: need to add ->core_command. */ | |
7745 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7746 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7747 | break; |
16e9c715 NC |
7748 | |
7749 | case NOTE_INFO_THREAD: | |
7750 | /* Make a ".reg/999" section. */ | |
1f170678 | 7751 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7752 | |
d4c88bbb | 7753 | len = strlen (buf) + 1; |
217aa764 | 7754 | name = bfd_alloc (abfd, len); |
16e9c715 | 7755 | if (name == NULL) |
b34976b6 | 7756 | return FALSE; |
c044fabd | 7757 | |
d4c88bbb | 7758 | memcpy (name, buf, len); |
16e9c715 | 7759 | |
117ed4f8 | 7760 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7761 | if (sect == NULL) |
b34976b6 | 7762 | return FALSE; |
c044fabd | 7763 | |
eea6121a | 7764 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7765 | sect->filepos = (note->descpos |
7766 | + offsetof (struct win32_pstatus, | |
7767 | data.thread_info.thread_context)); | |
16e9c715 NC |
7768 | sect->alignment_power = 2; |
7769 | ||
7770 | if (pstatus.data.thread_info.is_active_thread) | |
7771 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7772 | return FALSE; |
16e9c715 NC |
7773 | break; |
7774 | ||
7775 | case NOTE_INFO_MODULE: | |
7776 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7777 | sprintf (buf, ".module/%08lx", |
7778 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7779 | |
d4c88bbb | 7780 | len = strlen (buf) + 1; |
217aa764 | 7781 | name = bfd_alloc (abfd, len); |
16e9c715 | 7782 | if (name == NULL) |
b34976b6 | 7783 | return FALSE; |
c044fabd | 7784 | |
d4c88bbb | 7785 | memcpy (name, buf, len); |
252b5132 | 7786 | |
117ed4f8 | 7787 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7788 | |
16e9c715 | 7789 | if (sect == NULL) |
b34976b6 | 7790 | return FALSE; |
c044fabd | 7791 | |
eea6121a | 7792 | sect->size = note->descsz; |
16e9c715 | 7793 | sect->filepos = note->descpos; |
16e9c715 NC |
7794 | sect->alignment_power = 2; |
7795 | break; | |
7796 | ||
7797 | default: | |
b34976b6 | 7798 | return TRUE; |
16e9c715 NC |
7799 | } |
7800 | ||
b34976b6 | 7801 | return TRUE; |
16e9c715 NC |
7802 | } |
7803 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7804 | |
b34976b6 | 7805 | static bfd_boolean |
217aa764 | 7806 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7807 | { |
9c5bfbb7 | 7808 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7809 | |
252b5132 RH |
7810 | switch (note->type) |
7811 | { | |
7812 | default: | |
b34976b6 | 7813 | return TRUE; |
252b5132 | 7814 | |
252b5132 | 7815 | case NT_PRSTATUS: |
bb0082d6 AM |
7816 | if (bed->elf_backend_grok_prstatus) |
7817 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7818 | return TRUE; |
bb0082d6 | 7819 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7820 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7821 | #else |
b34976b6 | 7822 | return TRUE; |
252b5132 RH |
7823 | #endif |
7824 | ||
7825 | #if defined (HAVE_PSTATUS_T) | |
7826 | case NT_PSTATUS: | |
7827 | return elfcore_grok_pstatus (abfd, note); | |
7828 | #endif | |
7829 | ||
7830 | #if defined (HAVE_LWPSTATUS_T) | |
7831 | case NT_LWPSTATUS: | |
7832 | return elfcore_grok_lwpstatus (abfd, note); | |
7833 | #endif | |
7834 | ||
7835 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7836 | return elfcore_grok_prfpreg (abfd, note); | |
7837 | ||
16e9c715 | 7838 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7839 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7840 | return elfcore_grok_win32pstatus (abfd, note); |
7841 | #endif | |
7842 | ||
c044fabd | 7843 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7844 | if (note->namesz == 6 |
7845 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7846 | return elfcore_grok_prxfpreg (abfd, note); |
7847 | else | |
b34976b6 | 7848 | return TRUE; |
ff08c6bb | 7849 | |
252b5132 RH |
7850 | case NT_PRPSINFO: |
7851 | case NT_PSINFO: | |
bb0082d6 AM |
7852 | if (bed->elf_backend_grok_psinfo) |
7853 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7854 | return TRUE; |
bb0082d6 | 7855 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7856 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7857 | #else |
b34976b6 | 7858 | return TRUE; |
252b5132 | 7859 | #endif |
3333a7c3 RM |
7860 | |
7861 | case NT_AUXV: | |
7862 | { | |
117ed4f8 AM |
7863 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7864 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7865 | |
7866 | if (sect == NULL) | |
7867 | return FALSE; | |
eea6121a | 7868 | sect->size = note->descsz; |
3333a7c3 | 7869 | sect->filepos = note->descpos; |
3333a7c3 RM |
7870 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7871 | ||
7872 | return TRUE; | |
7873 | } | |
252b5132 RH |
7874 | } |
7875 | } | |
7876 | ||
b34976b6 | 7877 | static bfd_boolean |
217aa764 | 7878 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7879 | { |
7880 | char *cp; | |
7881 | ||
7882 | cp = strchr (note->namedata, '@'); | |
7883 | if (cp != NULL) | |
7884 | { | |
d2b64500 | 7885 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7886 | return TRUE; |
50b2bdb7 | 7887 | } |
b34976b6 | 7888 | return FALSE; |
50b2bdb7 AM |
7889 | } |
7890 | ||
b34976b6 | 7891 | static bfd_boolean |
217aa764 | 7892 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7893 | { |
7894 | ||
7895 | /* Signal number at offset 0x08. */ | |
7896 | elf_tdata (abfd)->core_signal | |
7897 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7898 | ||
7899 | /* Process ID at offset 0x50. */ | |
7900 | elf_tdata (abfd)->core_pid | |
7901 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7902 | ||
7903 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7904 | elf_tdata (abfd)->core_command | |
7905 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7906 | ||
7720ba9f MK |
7907 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7908 | note); | |
50b2bdb7 AM |
7909 | } |
7910 | ||
b34976b6 | 7911 | static bfd_boolean |
217aa764 | 7912 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7913 | { |
7914 | int lwp; | |
7915 | ||
7916 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7917 | elf_tdata (abfd)->core_lwpid = lwp; | |
7918 | ||
b4db1224 | 7919 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7920 | { |
7921 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7922 | find this note before any of the others, which is fine, | |
7923 | since the kernel writes this note out first when it | |
7924 | creates a core file. */ | |
47d9a591 | 7925 | |
50b2bdb7 AM |
7926 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7927 | } | |
7928 | ||
b4db1224 JT |
7929 | /* As of Jan 2002 there are no other machine-independent notes |
7930 | defined for NetBSD core files. If the note type is less | |
7931 | than the start of the machine-dependent note types, we don't | |
7932 | understand it. */ | |
47d9a591 | 7933 | |
b4db1224 | 7934 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7935 | return TRUE; |
50b2bdb7 AM |
7936 | |
7937 | ||
7938 | switch (bfd_get_arch (abfd)) | |
7939 | { | |
7940 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7941 | PT_GETFPREGS == mach+2. */ | |
7942 | ||
7943 | case bfd_arch_alpha: | |
7944 | case bfd_arch_sparc: | |
7945 | switch (note->type) | |
7946 | { | |
b4db1224 | 7947 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7948 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7949 | ||
b4db1224 | 7950 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7951 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7952 | ||
7953 | default: | |
b34976b6 | 7954 | return TRUE; |
50b2bdb7 AM |
7955 | } |
7956 | ||
7957 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7958 | PT_GETFPREGS == mach+3. */ | |
7959 | ||
7960 | default: | |
7961 | switch (note->type) | |
7962 | { | |
b4db1224 | 7963 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7964 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7965 | ||
b4db1224 | 7966 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7967 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7968 | ||
7969 | default: | |
b34976b6 | 7970 | return TRUE; |
50b2bdb7 AM |
7971 | } |
7972 | } | |
7973 | /* NOTREACHED */ | |
7974 | } | |
7975 | ||
07c6e936 | 7976 | static bfd_boolean |
d3fd4074 | 7977 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
7978 | { |
7979 | void *ddata = note->descdata; | |
7980 | char buf[100]; | |
7981 | char *name; | |
7982 | asection *sect; | |
f8843e87 AM |
7983 | short sig; |
7984 | unsigned flags; | |
07c6e936 NC |
7985 | |
7986 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7987 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7988 | ||
f8843e87 AM |
7989 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7990 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7991 | ||
7992 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7993 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7994 | |
7995 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7996 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7997 | { | |
7998 | elf_tdata (abfd)->core_signal = sig; | |
7999 | elf_tdata (abfd)->core_lwpid = *tid; | |
8000 | } | |
07c6e936 | 8001 | |
f8843e87 AM |
8002 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8003 | do not come from signals so we make sure we set the current | |
8004 | thread just in case. */ | |
8005 | if (flags & 0x00000080) | |
8006 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8007 | |
8008 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8009 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8010 | |
217aa764 | 8011 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8012 | if (name == NULL) |
8013 | return FALSE; | |
8014 | strcpy (name, buf); | |
8015 | ||
117ed4f8 | 8016 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8017 | if (sect == NULL) |
8018 | return FALSE; | |
8019 | ||
eea6121a | 8020 | sect->size = note->descsz; |
07c6e936 | 8021 | sect->filepos = note->descpos; |
07c6e936 NC |
8022 | sect->alignment_power = 2; |
8023 | ||
8024 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8025 | } | |
8026 | ||
8027 | static bfd_boolean | |
d69f560c KW |
8028 | elfcore_grok_nto_regs (bfd *abfd, |
8029 | Elf_Internal_Note *note, | |
d3fd4074 | 8030 | long tid, |
d69f560c | 8031 | char *base) |
07c6e936 NC |
8032 | { |
8033 | char buf[100]; | |
8034 | char *name; | |
8035 | asection *sect; | |
8036 | ||
d69f560c | 8037 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8038 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8039 | |
217aa764 | 8040 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8041 | if (name == NULL) |
8042 | return FALSE; | |
8043 | strcpy (name, buf); | |
8044 | ||
117ed4f8 | 8045 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8046 | if (sect == NULL) |
8047 | return FALSE; | |
8048 | ||
eea6121a | 8049 | sect->size = note->descsz; |
07c6e936 | 8050 | sect->filepos = note->descpos; |
07c6e936 NC |
8051 | sect->alignment_power = 2; |
8052 | ||
f8843e87 AM |
8053 | /* This is the current thread. */ |
8054 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8055 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8056 | |
8057 | return TRUE; | |
07c6e936 NC |
8058 | } |
8059 | ||
8060 | #define BFD_QNT_CORE_INFO 7 | |
8061 | #define BFD_QNT_CORE_STATUS 8 | |
8062 | #define BFD_QNT_CORE_GREG 9 | |
8063 | #define BFD_QNT_CORE_FPREG 10 | |
8064 | ||
8065 | static bfd_boolean | |
217aa764 | 8066 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8067 | { |
8068 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8069 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8070 | function. */ |
d3fd4074 | 8071 | static long tid = 1; |
07c6e936 NC |
8072 | |
8073 | switch (note->type) | |
8074 | { | |
d69f560c KW |
8075 | case BFD_QNT_CORE_INFO: |
8076 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8077 | case BFD_QNT_CORE_STATUS: | |
8078 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8079 | case BFD_QNT_CORE_GREG: | |
8080 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8081 | case BFD_QNT_CORE_FPREG: | |
8082 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8083 | default: | |
8084 | return TRUE; | |
07c6e936 NC |
8085 | } |
8086 | } | |
8087 | ||
7c76fa91 MS |
8088 | /* Function: elfcore_write_note |
8089 | ||
47d9a591 | 8090 | Inputs: |
7c76fa91 MS |
8091 | buffer to hold note |
8092 | name of note | |
8093 | type of note | |
8094 | data for note | |
8095 | size of data for note | |
8096 | ||
8097 | Return: | |
8098 | End of buffer containing note. */ | |
8099 | ||
8100 | char * | |
217aa764 AM |
8101 | elfcore_write_note (bfd *abfd, |
8102 | char *buf, | |
8103 | int *bufsiz, | |
8104 | const char *name, | |
8105 | int type, | |
8106 | const void *input, | |
8107 | int size) | |
7c76fa91 MS |
8108 | { |
8109 | Elf_External_Note *xnp; | |
d4c88bbb AM |
8110 | size_t namesz; |
8111 | size_t pad; | |
8112 | size_t newspace; | |
7c76fa91 MS |
8113 | char *p, *dest; |
8114 | ||
d4c88bbb AM |
8115 | namesz = 0; |
8116 | pad = 0; | |
8117 | if (name != NULL) | |
8118 | { | |
9c5bfbb7 | 8119 | const struct elf_backend_data *bed; |
d4c88bbb AM |
8120 | |
8121 | namesz = strlen (name) + 1; | |
8122 | bed = get_elf_backend_data (abfd); | |
017657f0 | 8123 | pad = -namesz & 3; |
d4c88bbb AM |
8124 | } |
8125 | ||
5de3bf90 | 8126 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 8127 | |
7c76fa91 MS |
8128 | p = realloc (buf, *bufsiz + newspace); |
8129 | dest = p + *bufsiz; | |
8130 | *bufsiz += newspace; | |
8131 | xnp = (Elf_External_Note *) dest; | |
8132 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8133 | H_PUT_32 (abfd, size, xnp->descsz); | |
8134 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8135 | dest = xnp->name; |
8136 | if (name != NULL) | |
8137 | { | |
8138 | memcpy (dest, name, namesz); | |
8139 | dest += namesz; | |
8140 | while (pad != 0) | |
8141 | { | |
8142 | *dest++ = '\0'; | |
8143 | --pad; | |
8144 | } | |
8145 | } | |
8146 | memcpy (dest, input, size); | |
7c76fa91 MS |
8147 | return p; |
8148 | } | |
8149 | ||
8150 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8151 | char * | |
217aa764 AM |
8152 | elfcore_write_prpsinfo (bfd *abfd, |
8153 | char *buf, | |
8154 | int *bufsiz, | |
8155 | const char *fname, | |
8156 | const char *psargs) | |
7c76fa91 MS |
8157 | { |
8158 | int note_type; | |
8159 | char *note_name = "CORE"; | |
8160 | ||
8161 | #if defined (HAVE_PSINFO_T) | |
8162 | psinfo_t data; | |
8163 | note_type = NT_PSINFO; | |
8164 | #else | |
8165 | prpsinfo_t data; | |
8166 | note_type = NT_PRPSINFO; | |
8167 | #endif | |
8168 | ||
8169 | memset (&data, 0, sizeof (data)); | |
8170 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8171 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 8172 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8173 | note_name, note_type, &data, sizeof (data)); |
8174 | } | |
8175 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8176 | ||
8177 | #if defined (HAVE_PRSTATUS_T) | |
8178 | char * | |
217aa764 AM |
8179 | elfcore_write_prstatus (bfd *abfd, |
8180 | char *buf, | |
8181 | int *bufsiz, | |
8182 | long pid, | |
8183 | int cursig, | |
8184 | const void *gregs) | |
7c76fa91 MS |
8185 | { |
8186 | prstatus_t prstat; | |
8187 | char *note_name = "CORE"; | |
8188 | ||
8189 | memset (&prstat, 0, sizeof (prstat)); | |
8190 | prstat.pr_pid = pid; | |
8191 | prstat.pr_cursig = cursig; | |
c106e334 | 8192 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 8193 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8194 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
8195 | } | |
8196 | #endif /* HAVE_PRSTATUS_T */ | |
8197 | ||
51316059 MS |
8198 | #if defined (HAVE_LWPSTATUS_T) |
8199 | char * | |
217aa764 AM |
8200 | elfcore_write_lwpstatus (bfd *abfd, |
8201 | char *buf, | |
8202 | int *bufsiz, | |
8203 | long pid, | |
8204 | int cursig, | |
8205 | const void *gregs) | |
51316059 MS |
8206 | { |
8207 | lwpstatus_t lwpstat; | |
8208 | char *note_name = "CORE"; | |
8209 | ||
8210 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8211 | lwpstat.pr_lwpid = pid >> 16; | |
8212 | lwpstat.pr_cursig = cursig; | |
8213 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8214 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8215 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8216 | #if !defined(gregs) | |
8217 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8218 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8219 | #else | |
8220 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8221 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8222 | #endif | |
8223 | #endif | |
47d9a591 | 8224 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8225 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8226 | } | |
8227 | #endif /* HAVE_LWPSTATUS_T */ | |
8228 | ||
7c76fa91 MS |
8229 | #if defined (HAVE_PSTATUS_T) |
8230 | char * | |
217aa764 AM |
8231 | elfcore_write_pstatus (bfd *abfd, |
8232 | char *buf, | |
8233 | int *bufsiz, | |
8234 | long pid, | |
6c10990d NC |
8235 | int cursig ATTRIBUTE_UNUSED, |
8236 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 MS |
8237 | { |
8238 | pstatus_t pstat; | |
8239 | char *note_name = "CORE"; | |
8240 | ||
51316059 MS |
8241 | memset (&pstat, 0, sizeof (pstat)); |
8242 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 8243 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8244 | NT_PSTATUS, &pstat, sizeof (pstat)); |
8245 | return buf; | |
7c76fa91 MS |
8246 | } |
8247 | #endif /* HAVE_PSTATUS_T */ | |
8248 | ||
8249 | char * | |
217aa764 AM |
8250 | elfcore_write_prfpreg (bfd *abfd, |
8251 | char *buf, | |
8252 | int *bufsiz, | |
8253 | const void *fpregs, | |
8254 | int size) | |
7c76fa91 MS |
8255 | { |
8256 | char *note_name = "CORE"; | |
47d9a591 | 8257 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8258 | note_name, NT_FPREGSET, fpregs, size); |
8259 | } | |
8260 | ||
8261 | char * | |
217aa764 AM |
8262 | elfcore_write_prxfpreg (bfd *abfd, |
8263 | char *buf, | |
8264 | int *bufsiz, | |
8265 | const void *xfpregs, | |
8266 | int size) | |
7c76fa91 MS |
8267 | { |
8268 | char *note_name = "LINUX"; | |
47d9a591 | 8269 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8270 | note_name, NT_PRXFPREG, xfpregs, size); |
8271 | } | |
8272 | ||
b34976b6 | 8273 | static bfd_boolean |
217aa764 | 8274 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 8275 | { |
c044fabd KH |
8276 | char *buf; |
8277 | char *p; | |
252b5132 RH |
8278 | |
8279 | if (size <= 0) | |
b34976b6 | 8280 | return TRUE; |
252b5132 | 8281 | |
dc810e39 | 8282 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 8283 | return FALSE; |
252b5132 | 8284 | |
dc810e39 | 8285 | buf = bfd_malloc (size); |
252b5132 | 8286 | if (buf == NULL) |
b34976b6 | 8287 | return FALSE; |
252b5132 | 8288 | |
dc810e39 | 8289 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
8290 | { |
8291 | error: | |
8292 | free (buf); | |
b34976b6 | 8293 | return FALSE; |
252b5132 RH |
8294 | } |
8295 | ||
8296 | p = buf; | |
8297 | while (p < buf + size) | |
8298 | { | |
c044fabd KH |
8299 | /* FIXME: bad alignment assumption. */ |
8300 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8301 | Elf_Internal_Note in; |
8302 | ||
dc810e39 | 8303 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8304 | |
dc810e39 | 8305 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8306 | in.namedata = xnp->name; |
8307 | ||
dc810e39 | 8308 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8309 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8310 | in.descpos = offset + (in.descdata - buf); | |
8311 | ||
0112cd26 | 8312 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) |
50b2bdb7 AM |
8313 | { |
8314 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8315 | goto error; | |
8316 | } | |
0112cd26 | 8317 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
07c6e936 NC |
8318 | { |
8319 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8320 | goto error; | |
8321 | } | |
50b2bdb7 AM |
8322 | else |
8323 | { | |
8324 | if (! elfcore_grok_note (abfd, &in)) | |
8325 | goto error; | |
8326 | } | |
252b5132 RH |
8327 | |
8328 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8329 | } | |
8330 | ||
8331 | free (buf); | |
b34976b6 | 8332 | return TRUE; |
252b5132 | 8333 | } |
98d8431c JB |
8334 | \f |
8335 | /* Providing external access to the ELF program header table. */ | |
8336 | ||
8337 | /* Return an upper bound on the number of bytes required to store a | |
8338 | copy of ABFD's program header table entries. Return -1 if an error | |
8339 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8340 | |
98d8431c | 8341 | long |
217aa764 | 8342 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8343 | { |
8344 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8345 | { | |
8346 | bfd_set_error (bfd_error_wrong_format); | |
8347 | return -1; | |
8348 | } | |
8349 | ||
936e320b | 8350 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8351 | } |
8352 | ||
98d8431c JB |
8353 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8354 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8355 | defined in include/elf/internal.h. To find out how large the | |
8356 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8357 | ||
8358 | Return the number of program header table entries read, or -1 if an | |
8359 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8360 | |
98d8431c | 8361 | int |
217aa764 | 8362 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8363 | { |
8364 | int num_phdrs; | |
8365 | ||
8366 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8367 | { | |
8368 | bfd_set_error (bfd_error_wrong_format); | |
8369 | return -1; | |
8370 | } | |
8371 | ||
8372 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8373 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8374 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8375 | ||
8376 | return num_phdrs; | |
8377 | } | |
ae4221d7 L |
8378 | |
8379 | void | |
217aa764 | 8380 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8381 | { |
d3b05f8d | 8382 | #ifdef BFD64 |
ae4221d7 L |
8383 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8384 | ||
8385 | i_ehdrp = elf_elfheader (abfd); | |
8386 | if (i_ehdrp == NULL) | |
8387 | sprintf_vma (buf, value); | |
8388 | else | |
8389 | { | |
8390 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8391 | { |
ae4221d7 | 8392 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8393 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8394 | #else |
cc55aec9 AM |
8395 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8396 | _bfd_int64_low (value)); | |
ae4221d7 | 8397 | #endif |
cc55aec9 | 8398 | } |
ae4221d7 L |
8399 | else |
8400 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8401 | } | |
d3b05f8d L |
8402 | #else |
8403 | sprintf_vma (buf, value); | |
8404 | #endif | |
ae4221d7 L |
8405 | } |
8406 | ||
8407 | void | |
217aa764 | 8408 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8409 | { |
d3b05f8d | 8410 | #ifdef BFD64 |
ae4221d7 L |
8411 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8412 | ||
8413 | i_ehdrp = elf_elfheader (abfd); | |
8414 | if (i_ehdrp == NULL) | |
8415 | fprintf_vma ((FILE *) stream, value); | |
8416 | else | |
8417 | { | |
8418 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8419 | { |
ae4221d7 | 8420 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8421 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8422 | #else |
cc55aec9 AM |
8423 | fprintf ((FILE *) stream, "%08lx%08lx", |
8424 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8425 | #endif |
cc55aec9 | 8426 | } |
ae4221d7 L |
8427 | else |
8428 | fprintf ((FILE *) stream, "%08lx", | |
8429 | (unsigned long) (value & 0xffffffff)); | |
8430 | } | |
d3b05f8d L |
8431 | #else |
8432 | fprintf_vma ((FILE *) stream, value); | |
8433 | #endif | |
ae4221d7 | 8434 | } |
db6751f2 JJ |
8435 | |
8436 | enum elf_reloc_type_class | |
217aa764 | 8437 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8438 | { |
8439 | return reloc_class_normal; | |
8440 | } | |
f8df10f4 | 8441 | |
47d9a591 | 8442 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8443 | relocation against a local symbol. */ |
8444 | ||
8445 | bfd_vma | |
217aa764 AM |
8446 | _bfd_elf_rela_local_sym (bfd *abfd, |
8447 | Elf_Internal_Sym *sym, | |
8517fae7 | 8448 | asection **psec, |
217aa764 | 8449 | Elf_Internal_Rela *rel) |
f8df10f4 | 8450 | { |
8517fae7 | 8451 | asection *sec = *psec; |
f8df10f4 JJ |
8452 | bfd_vma relocation; |
8453 | ||
8454 | relocation = (sec->output_section->vma | |
8455 | + sec->output_offset | |
8456 | + sym->st_value); | |
8457 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8458 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8459 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8460 | { |
f8df10f4 | 8461 | rel->r_addend = |
8517fae7 | 8462 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8463 | elf_section_data (sec)->sec_info, |
753731ee AM |
8464 | sym->st_value + rel->r_addend); |
8465 | if (sec != *psec) | |
8466 | { | |
8467 | /* If we have changed the section, and our original section is | |
8468 | marked with SEC_EXCLUDE, it means that the original | |
8469 | SEC_MERGE section has been completely subsumed in some | |
8470 | other SEC_MERGE section. In this case, we need to leave | |
8471 | some info around for --emit-relocs. */ | |
8472 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8473 | sec->kept_section = *psec; | |
8474 | sec = *psec; | |
8475 | } | |
8517fae7 AM |
8476 | rel->r_addend -= relocation; |
8477 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8478 | } |
8479 | return relocation; | |
8480 | } | |
c629eae0 JJ |
8481 | |
8482 | bfd_vma | |
217aa764 AM |
8483 | _bfd_elf_rel_local_sym (bfd *abfd, |
8484 | Elf_Internal_Sym *sym, | |
8485 | asection **psec, | |
8486 | bfd_vma addend) | |
47d9a591 | 8487 | { |
c629eae0 JJ |
8488 | asection *sec = *psec; |
8489 | ||
68bfbfcc | 8490 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8491 | return sym->st_value + addend; |
8492 | ||
8493 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8494 | elf_section_data (sec)->sec_info, |
753731ee | 8495 | sym->st_value + addend); |
c629eae0 JJ |
8496 | } |
8497 | ||
8498 | bfd_vma | |
217aa764 | 8499 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8500 | struct bfd_link_info *info, |
217aa764 AM |
8501 | asection *sec, |
8502 | bfd_vma offset) | |
c629eae0 | 8503 | { |
68bfbfcc | 8504 | switch (sec->sec_info_type) |
65765700 JJ |
8505 | { |
8506 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8507 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8508 | offset); | |
65765700 | 8509 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8510 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8511 | default: |
8512 | return offset; | |
8513 | } | |
c629eae0 | 8514 | } |
3333a7c3 RM |
8515 | \f |
8516 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8517 | reconstruct an ELF file by reading the segments out of remote memory | |
8518 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8519 | points to. If not null, *LOADBASEP is filled in with the difference | |
8520 | between the VMAs from which the segments were read, and the VMAs the | |
8521 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8522 | ||
8523 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8524 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8525 | should return zero on success or an `errno' code on failure. TEMPL must | |
8526 | be a BFD for an ELF target with the word size and byte order found in | |
8527 | the remote memory. */ | |
8528 | ||
8529 | bfd * | |
217aa764 AM |
8530 | bfd_elf_bfd_from_remote_memory |
8531 | (bfd *templ, | |
8532 | bfd_vma ehdr_vma, | |
8533 | bfd_vma *loadbasep, | |
f075ee0c | 8534 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8535 | { |
8536 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8537 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8538 | } | |
4c45e5c9 JJ |
8539 | \f |
8540 | long | |
c9727e01 AM |
8541 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8542 | long symcount ATTRIBUTE_UNUSED, | |
8543 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8544 | long dynsymcount, |
c9727e01 AM |
8545 | asymbol **dynsyms, |
8546 | asymbol **ret) | |
4c45e5c9 JJ |
8547 | { |
8548 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8549 | asection *relplt; | |
8550 | asymbol *s; | |
8551 | const char *relplt_name; | |
8552 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8553 | arelent *p; | |
8554 | long count, i, n; | |
8555 | size_t size; | |
8556 | Elf_Internal_Shdr *hdr; | |
8557 | char *names; | |
8558 | asection *plt; | |
8559 | ||
8615f3f2 AM |
8560 | *ret = NULL; |
8561 | ||
90e3cdf2 JJ |
8562 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8563 | return 0; | |
8564 | ||
8615f3f2 AM |
8565 | if (dynsymcount <= 0) |
8566 | return 0; | |
8567 | ||
4c45e5c9 JJ |
8568 | if (!bed->plt_sym_val) |
8569 | return 0; | |
8570 | ||
8571 | relplt_name = bed->relplt_name; | |
8572 | if (relplt_name == NULL) | |
8573 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8574 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8575 | if (relplt == NULL) | |
8576 | return 0; | |
8577 | ||
8578 | hdr = &elf_section_data (relplt)->this_hdr; | |
8579 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8580 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8581 | return 0; | |
8582 | ||
8583 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8584 | if (plt == NULL) | |
8585 | return 0; | |
8586 | ||
8587 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8588 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8589 | return -1; |
8590 | ||
eea6121a | 8591 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8592 | size = count * sizeof (asymbol); |
8593 | p = relplt->relocation; | |
8594 | for (i = 0; i < count; i++, s++, p++) | |
8595 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8596 | ||
8597 | s = *ret = bfd_malloc (size); | |
8598 | if (s == NULL) | |
8599 | return -1; | |
8600 | ||
8601 | names = (char *) (s + count); | |
8602 | p = relplt->relocation; | |
8603 | n = 0; | |
8604 | for (i = 0; i < count; i++, s++, p++) | |
8605 | { | |
8606 | size_t len; | |
8607 | bfd_vma addr; | |
8608 | ||
8609 | addr = bed->plt_sym_val (i, plt, p); | |
8610 | if (addr == (bfd_vma) -1) | |
8611 | continue; | |
8612 | ||
8613 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8614 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8615 | we are defining a symbol, ensure one of them is set. */ | |
8616 | if ((s->flags & BSF_LOCAL) == 0) | |
8617 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8618 | s->section = plt; |
8619 | s->value = addr - plt->vma; | |
8620 | s->name = names; | |
8621 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8622 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8623 | names += len; | |
8624 | memcpy (names, "@plt", sizeof ("@plt")); | |
8625 | names += sizeof ("@plt"); | |
8626 | ++n; | |
8627 | } | |
8628 | ||
8629 | return n; | |
8630 | } | |
3d7f7666 L |
8631 | |
8632 | /* Sort symbol by binding and section. We want to put definitions | |
8633 | sorted by section at the beginning. */ | |
8634 | ||
8635 | static int | |
8636 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8637 | { | |
8638 | const Elf_Internal_Sym *s1; | |
8639 | const Elf_Internal_Sym *s2; | |
8640 | int shndx; | |
8641 | ||
8642 | /* Make sure that undefined symbols are at the end. */ | |
8643 | s1 = (const Elf_Internal_Sym *) arg1; | |
8644 | if (s1->st_shndx == SHN_UNDEF) | |
8645 | return 1; | |
8646 | s2 = (const Elf_Internal_Sym *) arg2; | |
8647 | if (s2->st_shndx == SHN_UNDEF) | |
8648 | return -1; | |
8649 | ||
8650 | /* Sorted by section index. */ | |
8651 | shndx = s1->st_shndx - s2->st_shndx; | |
8652 | if (shndx != 0) | |
8653 | return shndx; | |
8654 | ||
8655 | /* Sorted by binding. */ | |
8656 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8657 | } | |
8658 | ||
8659 | struct elf_symbol | |
8660 | { | |
8661 | Elf_Internal_Sym *sym; | |
8662 | const char *name; | |
8663 | }; | |
8664 | ||
8665 | static int | |
8666 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8667 | { | |
8668 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8669 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8670 | return strcmp (s1->name, s2->name); | |
8671 | } | |
8672 | ||
8673 | /* Check if 2 sections define the same set of local and global | |
8674 | symbols. */ | |
8675 | ||
8676 | bfd_boolean | |
c0f00686 L |
8677 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2, |
8678 | struct bfd_link_info *info) | |
3d7f7666 L |
8679 | { |
8680 | bfd *bfd1, *bfd2; | |
8681 | const struct elf_backend_data *bed1, *bed2; | |
8682 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8683 | bfd_size_type symcount1, symcount2; | |
8684 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8685 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8686 | Elf_Internal_Sym *isymend; | |
8687 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8688 | bfd_size_type count1, count2, i; | |
8689 | int shndx1, shndx2; | |
8690 | bfd_boolean result; | |
8691 | ||
8692 | bfd1 = sec1->owner; | |
8693 | bfd2 = sec2->owner; | |
8694 | ||
8695 | /* If both are .gnu.linkonce sections, they have to have the same | |
8696 | section name. */ | |
0112cd26 NC |
8697 | if (CONST_STRNEQ (sec1->name, ".gnu.linkonce") |
8698 | && CONST_STRNEQ (sec2->name, ".gnu.linkonce")) | |
3d7f7666 L |
8699 | return strcmp (sec1->name + sizeof ".gnu.linkonce", |
8700 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8701 | ||
8702 | /* Both sections have to be in ELF. */ | |
8703 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8704 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8705 | return FALSE; | |
8706 | ||
8707 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8708 | return FALSE; | |
8709 | ||
8710 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8711 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8712 | { | |
8713 | /* If both are members of section groups, they have to have the | |
8714 | same group name. */ | |
8715 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8716 | return FALSE; | |
8717 | } | |
8718 | ||
8719 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8720 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8721 | if (shndx1 == -1 || shndx2 == -1) | |
8722 | return FALSE; | |
8723 | ||
8724 | bed1 = get_elf_backend_data (bfd1); | |
8725 | bed2 = get_elf_backend_data (bfd2); | |
8726 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8727 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8728 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8729 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8730 | ||
8731 | if (symcount1 == 0 || symcount2 == 0) | |
8732 | return FALSE; | |
8733 | ||
3d7f7666 | 8734 | result = FALSE; |
c0f00686 L |
8735 | isymbuf1 = elf_tdata (bfd1)->symbuf; |
8736 | isymbuf2 = elf_tdata (bfd2)->symbuf; | |
3d7f7666 | 8737 | |
c0f00686 L |
8738 | if (isymbuf1 == NULL) |
8739 | { | |
8740 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8741 | NULL, NULL, NULL); | |
8742 | if (isymbuf1 == NULL) | |
8743 | goto done; | |
8744 | /* Sort symbols by binding and section. Global definitions are at | |
8745 | the beginning. */ | |
8746 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8747 | elf_sort_elf_symbol); | |
8748 | if (!info->reduce_memory_overheads) | |
8749 | elf_tdata (bfd1)->symbuf = isymbuf1; | |
8750 | } | |
8751 | ||
8752 | if (isymbuf2 == NULL) | |
8753 | { | |
8754 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8755 | NULL, NULL, NULL); | |
8756 | if (isymbuf2 == NULL) | |
8757 | goto done; | |
8758 | /* Sort symbols by binding and section. Global definitions are at | |
8759 | the beginning. */ | |
8760 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8761 | elf_sort_elf_symbol); | |
8762 | if (!info->reduce_memory_overheads) | |
8763 | elf_tdata (bfd2)->symbuf = isymbuf2; | |
8764 | } | |
3d7f7666 L |
8765 | |
8766 | /* Count definitions in the section. */ | |
8767 | count1 = 0; | |
8768 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8769 | isym < isymend; isym++) | |
8770 | { | |
8771 | if (isym->st_shndx == (unsigned int) shndx1) | |
8772 | { | |
8773 | if (count1 == 0) | |
8774 | isymstart1 = isym; | |
8775 | count1++; | |
8776 | } | |
8777 | ||
8778 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8779 | break; | |
8780 | } | |
8781 | ||
8782 | count2 = 0; | |
8783 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8784 | isym < isymend; isym++) | |
8785 | { | |
8786 | if (isym->st_shndx == (unsigned int) shndx2) | |
8787 | { | |
8788 | if (count2 == 0) | |
8789 | isymstart2 = isym; | |
8790 | count2++; | |
8791 | } | |
8792 | ||
8793 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8794 | break; | |
8795 | } | |
8796 | ||
8797 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8798 | goto done; | |
8799 | ||
8800 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8801 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8802 | ||
8803 | if (symtable1 == NULL || symtable2 == NULL) | |
8804 | goto done; | |
8805 | ||
8806 | symp = symtable1; | |
8807 | for (isym = isymstart1, isymend = isym + count1; | |
8808 | isym < isymend; isym++) | |
8809 | { | |
8810 | symp->sym = isym; | |
8811 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8812 | hdr1->sh_link, | |
8813 | isym->st_name); | |
8814 | symp++; | |
8815 | } | |
8816 | ||
8817 | symp = symtable2; | |
8818 | for (isym = isymstart2, isymend = isym + count1; | |
8819 | isym < isymend; isym++) | |
8820 | { | |
8821 | symp->sym = isym; | |
8822 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8823 | hdr2->sh_link, | |
8824 | isym->st_name); | |
8825 | symp++; | |
8826 | } | |
8827 | ||
8828 | /* Sort symbol by name. */ | |
8829 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8830 | elf_sym_name_compare); | |
8831 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8832 | elf_sym_name_compare); | |
8833 | ||
8834 | for (i = 0; i < count1; i++) | |
8835 | /* Two symbols must have the same binding, type and name. */ | |
8836 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8837 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8838 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8839 | goto done; | |
8840 | ||
8841 | result = TRUE; | |
8842 | ||
8843 | done: | |
8844 | if (symtable1) | |
8845 | free (symtable1); | |
8846 | if (symtable2) | |
8847 | free (symtable2); | |
c0f00686 L |
8848 | if (info->reduce_memory_overheads) |
8849 | { | |
8850 | if (isymbuf1) | |
8851 | free (isymbuf1); | |
8852 | if (isymbuf2) | |
8853 | free (isymbuf2); | |
8854 | } | |
3d7f7666 L |
8855 | |
8856 | return result; | |
8857 | } | |
3b22753a L |
8858 | |
8859 | /* It is only used by x86-64 so far. */ | |
8860 | asection _bfd_elf_large_com_section | |
8861 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8862 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 L |
8863 | |
8864 | /* Return TRUE if 2 section types are compatible. */ | |
8865 | ||
8866 | bfd_boolean | |
8867 | _bfd_elf_match_sections_by_type (bfd *abfd, const asection *asec, | |
8868 | bfd *bbfd, const asection *bsec) | |
8869 | { | |
8870 | if (asec == NULL | |
8871 | || bsec == NULL | |
8872 | || abfd->xvec->flavour != bfd_target_elf_flavour | |
8873 | || bbfd->xvec->flavour != bfd_target_elf_flavour) | |
8874 | return TRUE; | |
8875 | ||
8876 | return elf_section_type (asec) == elf_section_type (bsec); | |
8877 | } |