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Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
0e922b77 | 4 | 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
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 | 36 | #include "sysdep.h" |
3db64b00 | 37 | #include "bfd.h" |
252b5132 RH |
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); | |
74f2e02b AM |
255 | if (i_shdrp == 0 |
256 | || shindex >= elf_numsections (abfd) | |
257 | || i_shdrp[shindex] == 0) | |
f075ee0c | 258 | return NULL; |
252b5132 | 259 | |
f075ee0c | 260 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
261 | if (shstrtab == NULL) |
262 | { | |
c044fabd | 263 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
264 | offset = i_shdrp[shindex]->sh_offset; |
265 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
266 | |
267 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
268 | in case the string table is not terminated. */ | |
269 | if (shstrtabsize + 1 == 0 | |
270 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
271 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
272 | shstrtab = NULL; | |
273 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
274 | { | |
275 | if (bfd_get_error () != bfd_error_system_call) | |
276 | bfd_set_error (bfd_error_file_truncated); | |
277 | shstrtab = NULL; | |
278 | } | |
279 | else | |
280 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 281 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 282 | } |
f075ee0c | 283 | return (char *) shstrtab; |
252b5132 RH |
284 | } |
285 | ||
286 | char * | |
217aa764 AM |
287 | bfd_elf_string_from_elf_section (bfd *abfd, |
288 | unsigned int shindex, | |
289 | unsigned int strindex) | |
252b5132 RH |
290 | { |
291 | Elf_Internal_Shdr *hdr; | |
292 | ||
293 | if (strindex == 0) | |
294 | return ""; | |
295 | ||
74f2e02b AM |
296 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
297 | return NULL; | |
298 | ||
252b5132 RH |
299 | hdr = elf_elfsections (abfd)[shindex]; |
300 | ||
301 | if (hdr->contents == NULL | |
302 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
303 | return NULL; | |
304 | ||
305 | if (strindex >= hdr->sh_size) | |
306 | { | |
1b3a8575 | 307 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 308 | (*_bfd_error_handler) |
d003868e AM |
309 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
310 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 311 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 312 | ? ".shstrtab" |
1b3a8575 | 313 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
314 | return ""; |
315 | } | |
316 | ||
317 | return ((char *) hdr->contents) + strindex; | |
318 | } | |
319 | ||
6cdc0ccc AM |
320 | /* Read and convert symbols to internal format. |
321 | SYMCOUNT specifies the number of symbols to read, starting from | |
322 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
323 | are non-NULL, they are used to store the internal symbols, external | |
324 | symbols, and symbol section index extensions, respectively. */ | |
325 | ||
326 | Elf_Internal_Sym * | |
217aa764 AM |
327 | bfd_elf_get_elf_syms (bfd *ibfd, |
328 | Elf_Internal_Shdr *symtab_hdr, | |
329 | size_t symcount, | |
330 | size_t symoffset, | |
331 | Elf_Internal_Sym *intsym_buf, | |
332 | void *extsym_buf, | |
333 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
334 | { |
335 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 336 | void *alloc_ext; |
df622259 | 337 | const bfd_byte *esym; |
6cdc0ccc AM |
338 | Elf_External_Sym_Shndx *alloc_extshndx; |
339 | Elf_External_Sym_Shndx *shndx; | |
340 | Elf_Internal_Sym *isym; | |
341 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 342 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
343 | size_t extsym_size; |
344 | bfd_size_type amt; | |
345 | file_ptr pos; | |
346 | ||
347 | if (symcount == 0) | |
348 | return intsym_buf; | |
349 | ||
350 | /* Normal syms might have section extension entries. */ | |
351 | shndx_hdr = NULL; | |
352 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
353 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
354 | ||
355 | /* Read the symbols. */ | |
356 | alloc_ext = NULL; | |
357 | alloc_extshndx = NULL; | |
358 | bed = get_elf_backend_data (ibfd); | |
359 | extsym_size = bed->s->sizeof_sym; | |
360 | amt = symcount * extsym_size; | |
361 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
362 | if (extsym_buf == NULL) | |
363 | { | |
d0fb9a8d | 364 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
365 | extsym_buf = alloc_ext; |
366 | } | |
367 | if (extsym_buf == NULL | |
368 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
369 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
370 | { | |
371 | intsym_buf = NULL; | |
372 | goto out; | |
373 | } | |
374 | ||
375 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
376 | extshndx_buf = NULL; | |
377 | else | |
378 | { | |
379 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
380 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
381 | if (extshndx_buf == NULL) | |
382 | { | |
d0fb9a8d JJ |
383 | alloc_extshndx = bfd_malloc2 (symcount, |
384 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
385 | extshndx_buf = alloc_extshndx; |
386 | } | |
387 | if (extshndx_buf == NULL | |
388 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
389 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
390 | { | |
391 | intsym_buf = NULL; | |
392 | goto out; | |
393 | } | |
394 | } | |
395 | ||
396 | if (intsym_buf == NULL) | |
397 | { | |
d0fb9a8d | 398 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
399 | if (intsym_buf == NULL) |
400 | goto out; | |
401 | } | |
402 | ||
403 | /* Convert the symbols to internal form. */ | |
404 | isymend = intsym_buf + symcount; | |
405 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
406 | isym < isymend; | |
407 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
408 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
409 | { | |
410 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
411 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
412 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
413 | ibfd, (unsigned long) symoffset); | |
414 | intsym_buf = NULL; | |
415 | goto out; | |
416 | } | |
6cdc0ccc AM |
417 | |
418 | out: | |
419 | if (alloc_ext != NULL) | |
420 | free (alloc_ext); | |
421 | if (alloc_extshndx != NULL) | |
422 | free (alloc_extshndx); | |
423 | ||
424 | return intsym_buf; | |
425 | } | |
426 | ||
5cab59f6 AM |
427 | /* Look up a symbol name. */ |
428 | const char * | |
be8dd2ca AM |
429 | bfd_elf_sym_name (bfd *abfd, |
430 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
431 | Elf_Internal_Sym *isym, |
432 | asection *sym_sec) | |
5cab59f6 | 433 | { |
26c61ae5 | 434 | const char *name; |
5cab59f6 | 435 | unsigned int iname = isym->st_name; |
be8dd2ca | 436 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 437 | |
138f35cc JJ |
438 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
439 | /* Check for a bogus st_shndx to avoid crashing. */ | |
440 | && isym->st_shndx < elf_numsections (abfd) | |
441 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
442 | { |
443 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
444 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
445 | } | |
446 | ||
26c61ae5 L |
447 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
448 | if (name == NULL) | |
449 | name = "(null)"; | |
450 | else if (sym_sec && *name == '\0') | |
451 | name = bfd_section_name (abfd, sym_sec); | |
452 | ||
453 | return name; | |
5cab59f6 AM |
454 | } |
455 | ||
dbb410c3 AM |
456 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
457 | sections. The first element is the flags, the rest are section | |
458 | pointers. */ | |
459 | ||
460 | typedef union elf_internal_group { | |
461 | Elf_Internal_Shdr *shdr; | |
462 | unsigned int flags; | |
463 | } Elf_Internal_Group; | |
464 | ||
b885599b AM |
465 | /* Return the name of the group signature symbol. Why isn't the |
466 | signature just a string? */ | |
467 | ||
468 | static const char * | |
217aa764 | 469 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 470 | { |
9dce4196 | 471 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
472 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
473 | Elf_External_Sym_Shndx eshndx; | |
474 | Elf_Internal_Sym isym; | |
b885599b | 475 | |
13792e9d L |
476 | /* First we need to ensure the symbol table is available. Make sure |
477 | that it is a symbol table section. */ | |
478 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
479 | if (hdr->sh_type != SHT_SYMTAB | |
480 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
481 | return NULL; |
482 | ||
9dce4196 AM |
483 | /* Go read the symbol. */ |
484 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
485 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
486 | &isym, esym, &eshndx) == NULL) | |
b885599b | 487 | return NULL; |
9dce4196 | 488 | |
26c61ae5 | 489 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
490 | } |
491 | ||
dbb410c3 AM |
492 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
493 | ||
b34976b6 | 494 | static bfd_boolean |
217aa764 | 495 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
496 | { |
497 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
498 | ||
499 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
500 | is set to -1 if there are no SHT_GROUP sections. */ | |
501 | if (num_group == 0) | |
502 | { | |
503 | unsigned int i, shnum; | |
504 | ||
505 | /* First count the number of groups. If we have a SHT_GROUP | |
506 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 507 | shnum = elf_numsections (abfd); |
dbb410c3 | 508 | num_group = 0; |
1783205a NC |
509 | |
510 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ | |
511 | ( (shdr)->sh_type == SHT_GROUP \ | |
512 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
513 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
514 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
515 | ||
dbb410c3 AM |
516 | for (i = 0; i < shnum; i++) |
517 | { | |
518 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
519 | |
520 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
521 | num_group += 1; |
522 | } | |
523 | ||
524 | if (num_group == 0) | |
20dbb49d L |
525 | { |
526 | num_group = (unsigned) -1; | |
527 | elf_tdata (abfd)->num_group = num_group; | |
528 | } | |
529 | else | |
dbb410c3 AM |
530 | { |
531 | /* We keep a list of elf section headers for group sections, | |
532 | so we can find them quickly. */ | |
20dbb49d | 533 | bfd_size_type amt; |
d0fb9a8d | 534 | |
20dbb49d | 535 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
536 | elf_tdata (abfd)->group_sect_ptr |
537 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 538 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 539 | return FALSE; |
dbb410c3 AM |
540 | |
541 | num_group = 0; | |
542 | for (i = 0; i < shnum; i++) | |
543 | { | |
544 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
545 | |
546 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 547 | { |
973ffd63 | 548 | unsigned char *src; |
dbb410c3 AM |
549 | Elf_Internal_Group *dest; |
550 | ||
551 | /* Add to list of sections. */ | |
552 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
553 | num_group += 1; | |
554 | ||
555 | /* Read the raw contents. */ | |
556 | BFD_ASSERT (sizeof (*dest) >= 4); | |
557 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
558 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
559 | sizeof (*dest) / 4); | |
1783205a NC |
560 | /* PR binutils/4110: Handle corrupt group headers. */ |
561 | if (shdr->contents == NULL) | |
562 | { | |
563 | _bfd_error_handler | |
564 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
565 | bfd_set_error (bfd_error_bad_value); | |
566 | return FALSE; | |
567 | } | |
568 | ||
569 | memset (shdr->contents, 0, amt); | |
570 | ||
571 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
572 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
573 | != shdr->sh_size)) | |
b34976b6 | 574 | return FALSE; |
dbb410c3 AM |
575 | |
576 | /* Translate raw contents, a flag word followed by an | |
577 | array of elf section indices all in target byte order, | |
578 | to the flag word followed by an array of elf section | |
579 | pointers. */ | |
580 | src = shdr->contents + shdr->sh_size; | |
581 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
582 | while (1) | |
583 | { | |
584 | unsigned int idx; | |
585 | ||
586 | src -= 4; | |
587 | --dest; | |
588 | idx = H_GET_32 (abfd, src); | |
589 | if (src == shdr->contents) | |
590 | { | |
591 | dest->flags = idx; | |
b885599b AM |
592 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
593 | shdr->bfd_section->flags | |
594 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
595 | break; |
596 | } | |
597 | if (idx >= shnum) | |
598 | { | |
599 | ((*_bfd_error_handler) | |
d003868e | 600 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
601 | idx = 0; |
602 | } | |
603 | dest->shdr = elf_elfsections (abfd)[idx]; | |
604 | } | |
605 | } | |
606 | } | |
607 | } | |
608 | } | |
609 | ||
610 | if (num_group != (unsigned) -1) | |
611 | { | |
612 | unsigned int i; | |
613 | ||
614 | for (i = 0; i < num_group; i++) | |
615 | { | |
616 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
617 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
618 | unsigned int n_elt = shdr->sh_size / 4; | |
619 | ||
620 | /* Look through this group's sections to see if current | |
621 | section is a member. */ | |
622 | while (--n_elt != 0) | |
623 | if ((++idx)->shdr == hdr) | |
624 | { | |
e0e8c97f | 625 | asection *s = NULL; |
dbb410c3 AM |
626 | |
627 | /* We are a member of this group. Go looking through | |
628 | other members to see if any others are linked via | |
629 | next_in_group. */ | |
630 | idx = (Elf_Internal_Group *) shdr->contents; | |
631 | n_elt = shdr->sh_size / 4; | |
632 | while (--n_elt != 0) | |
633 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 634 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
635 | break; |
636 | if (n_elt != 0) | |
637 | { | |
dbb410c3 AM |
638 | /* Snarf the group name from other member, and |
639 | insert current section in circular list. */ | |
945906ff AM |
640 | elf_group_name (newsect) = elf_group_name (s); |
641 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
642 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
643 | } |
644 | else | |
645 | { | |
dbb410c3 AM |
646 | const char *gname; |
647 | ||
b885599b AM |
648 | gname = group_signature (abfd, shdr); |
649 | if (gname == NULL) | |
b34976b6 | 650 | return FALSE; |
945906ff | 651 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
652 | |
653 | /* Start a circular list with one element. */ | |
945906ff | 654 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 655 | } |
b885599b | 656 | |
9dce4196 AM |
657 | /* If the group section has been created, point to the |
658 | new member. */ | |
dbb410c3 | 659 | if (shdr->bfd_section != NULL) |
945906ff | 660 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 661 | |
dbb410c3 AM |
662 | i = num_group - 1; |
663 | break; | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
945906ff | 668 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 669 | { |
d003868e AM |
670 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
671 | abfd, newsect); | |
dbb410c3 | 672 | } |
b34976b6 | 673 | return TRUE; |
dbb410c3 AM |
674 | } |
675 | ||
3d7f7666 | 676 | bfd_boolean |
dd863624 | 677 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
678 | { |
679 | unsigned int i; | |
680 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
681 | bfd_boolean result = TRUE; | |
dd863624 L |
682 | asection *s; |
683 | ||
684 | /* Process SHF_LINK_ORDER. */ | |
685 | for (s = abfd->sections; s != NULL; s = s->next) | |
686 | { | |
687 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
688 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
689 | { | |
690 | unsigned int elfsec = this_hdr->sh_link; | |
691 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
692 | not set the sh_link or sh_info fields. Hence we could | |
693 | get the situation where elfsec is 0. */ | |
694 | if (elfsec == 0) | |
695 | { | |
696 | const struct elf_backend_data *bed | |
697 | = get_elf_backend_data (abfd); | |
698 | if (bed->link_order_error_handler) | |
699 | bed->link_order_error_handler | |
700 | (_("%B: warning: sh_link not set for section `%A'"), | |
701 | abfd, s); | |
702 | } | |
703 | else | |
704 | { | |
25bbc984 L |
705 | asection *link; |
706 | ||
dd863624 | 707 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
708 | |
709 | /* PR 1991, 2008: | |
710 | Some strip/objcopy may leave an incorrect value in | |
711 | sh_link. We don't want to proceed. */ | |
712 | link = this_hdr->bfd_section; | |
713 | if (link == NULL) | |
714 | { | |
715 | (*_bfd_error_handler) | |
716 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
717 | s->owner, s, elfsec); | |
718 | result = FALSE; | |
719 | } | |
720 | ||
721 | elf_linked_to_section (s) = link; | |
dd863624 L |
722 | } |
723 | } | |
724 | } | |
3d7f7666 | 725 | |
dd863624 | 726 | /* Process section groups. */ |
3d7f7666 L |
727 | if (num_group == (unsigned) -1) |
728 | return result; | |
729 | ||
730 | for (i = 0; i < num_group; i++) | |
731 | { | |
732 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
733 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
734 | unsigned int n_elt = shdr->sh_size / 4; | |
735 | ||
736 | while (--n_elt != 0) | |
737 | if ((++idx)->shdr->bfd_section) | |
738 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
739 | else if (idx->shdr->sh_type == SHT_RELA | |
740 | || idx->shdr->sh_type == SHT_REL) | |
741 | /* We won't include relocation sections in section groups in | |
742 | output object files. We adjust the group section size here | |
743 | so that relocatable link will work correctly when | |
744 | relocation sections are in section group in input object | |
745 | files. */ | |
746 | shdr->bfd_section->size -= 4; | |
747 | else | |
748 | { | |
749 | /* There are some unknown sections in the group. */ | |
750 | (*_bfd_error_handler) | |
d003868e AM |
751 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
752 | abfd, | |
3d7f7666 | 753 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
754 | bfd_elf_string_from_elf_section (abfd, |
755 | (elf_elfheader (abfd) | |
756 | ->e_shstrndx), | |
757 | idx->shdr->sh_name), | |
3d7f7666 L |
758 | shdr->bfd_section->name); |
759 | result = FALSE; | |
760 | } | |
761 | } | |
762 | return result; | |
763 | } | |
764 | ||
72adc230 AM |
765 | bfd_boolean |
766 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
767 | { | |
768 | return elf_next_in_group (sec) != NULL; | |
769 | } | |
770 | ||
252b5132 RH |
771 | /* Make a BFD section from an ELF section. We store a pointer to the |
772 | BFD section in the bfd_section field of the header. */ | |
773 | ||
b34976b6 | 774 | bfd_boolean |
217aa764 AM |
775 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
776 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
777 | const char *name, |
778 | int shindex) | |
252b5132 RH |
779 | { |
780 | asection *newsect; | |
781 | flagword flags; | |
9c5bfbb7 | 782 | const struct elf_backend_data *bed; |
252b5132 RH |
783 | |
784 | if (hdr->bfd_section != NULL) | |
785 | { | |
786 | BFD_ASSERT (strcmp (name, | |
787 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 788 | return TRUE; |
252b5132 RH |
789 | } |
790 | ||
791 | newsect = bfd_make_section_anyway (abfd, name); | |
792 | if (newsect == NULL) | |
b34976b6 | 793 | return FALSE; |
252b5132 | 794 | |
1829f4b2 AM |
795 | hdr->bfd_section = newsect; |
796 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 797 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 798 | |
2f89ff8d L |
799 | /* Always use the real type/flags. */ |
800 | elf_section_type (newsect) = hdr->sh_type; | |
801 | elf_section_flags (newsect) = hdr->sh_flags; | |
802 | ||
252b5132 RH |
803 | newsect->filepos = hdr->sh_offset; |
804 | ||
805 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
806 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
807 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 808 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 809 | return FALSE; |
252b5132 RH |
810 | |
811 | flags = SEC_NO_FLAGS; | |
812 | if (hdr->sh_type != SHT_NOBITS) | |
813 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 814 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 815 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
816 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
817 | { | |
818 | flags |= SEC_ALLOC; | |
819 | if (hdr->sh_type != SHT_NOBITS) | |
820 | flags |= SEC_LOAD; | |
821 | } | |
822 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
823 | flags |= SEC_READONLY; | |
824 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
825 | flags |= SEC_CODE; | |
826 | else if ((flags & SEC_LOAD) != 0) | |
827 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
828 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
829 | { | |
830 | flags |= SEC_MERGE; | |
831 | newsect->entsize = hdr->sh_entsize; | |
832 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
833 | flags |= SEC_STRINGS; | |
834 | } | |
dbb410c3 AM |
835 | if (hdr->sh_flags & SHF_GROUP) |
836 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 837 | return FALSE; |
13ae64f3 JJ |
838 | if ((hdr->sh_flags & SHF_TLS) != 0) |
839 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 840 | |
3d2b39cf | 841 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 842 | { |
3d2b39cf L |
843 | /* The debugging sections appear to be recognized only by name, |
844 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
845 | static const struct | |
846 | { | |
847 | const char *name; | |
848 | int len; | |
849 | } debug_sections [] = | |
850 | { | |
0112cd26 | 851 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
852 | { NULL, 0 }, /* 'e' */ |
853 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 854 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
855 | { NULL, 0 }, /* 'h' */ |
856 | { NULL, 0 }, /* 'i' */ | |
857 | { NULL, 0 }, /* 'j' */ | |
858 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 859 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
860 | { NULL, 0 }, /* 'm' */ |
861 | { NULL, 0 }, /* 'n' */ | |
862 | { NULL, 0 }, /* 'o' */ | |
863 | { NULL, 0 }, /* 'p' */ | |
864 | { NULL, 0 }, /* 'q' */ | |
865 | { NULL, 0 }, /* 'r' */ | |
0112cd26 | 866 | { STRING_COMMA_LEN ("stab") } /* 's' */ |
3d2b39cf L |
867 | }; |
868 | ||
869 | if (name [0] == '.') | |
870 | { | |
871 | int i = name [1] - 'd'; | |
872 | if (i >= 0 | |
873 | && i < (int) ARRAY_SIZE (debug_sections) | |
874 | && debug_sections [i].name != NULL | |
875 | && strncmp (&name [1], debug_sections [i].name, | |
876 | debug_sections [i].len) == 0) | |
877 | flags |= SEC_DEBUGGING; | |
878 | } | |
879 | } | |
252b5132 RH |
880 | |
881 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
882 | only link a single copy of the section. This is used to support | |
883 | g++. g++ will emit each template expansion in its own section. | |
884 | The symbols will be defined as weak, so that multiple definitions | |
885 | are permitted. The GNU linker extension is to actually discard | |
886 | all but one of the sections. */ | |
0112cd26 | 887 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 888 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
889 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
890 | ||
fa152c49 JW |
891 | bed = get_elf_backend_data (abfd); |
892 | if (bed->elf_backend_section_flags) | |
893 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 894 | return FALSE; |
fa152c49 | 895 | |
252b5132 | 896 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 897 | return FALSE; |
252b5132 RH |
898 | |
899 | if ((flags & SEC_ALLOC) != 0) | |
900 | { | |
901 | Elf_Internal_Phdr *phdr; | |
902 | unsigned int i; | |
903 | ||
904 | /* Look through the phdrs to see if we need to adjust the lma. | |
905 | If all the p_paddr fields are zero, we ignore them, since | |
906 | some ELF linkers produce such output. */ | |
907 | phdr = elf_tdata (abfd)->phdr; | |
908 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
909 | { | |
910 | if (phdr->p_paddr != 0) | |
911 | break; | |
912 | } | |
913 | if (i < elf_elfheader (abfd)->e_phnum) | |
914 | { | |
915 | phdr = elf_tdata (abfd)->phdr; | |
916 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
917 | { | |
e0e8c97f NC |
918 | /* This section is part of this segment if its file |
919 | offset plus size lies within the segment's memory | |
920 | span and, if the section is loaded, the extent of the | |
47d9a591 | 921 | loaded data lies within the extent of the segment. |
bf36db18 NC |
922 | |
923 | Note - we used to check the p_paddr field as well, and | |
924 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 925 | though, as a perfectly valid initialised segment can |
bf36db18 | 926 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 927 | place special significance on the address 0 and |
bf36db18 NC |
928 | executables need to be able to have a segment which |
929 | covers this address. */ | |
252b5132 | 930 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
931 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
932 | && (hdr->sh_offset + hdr->sh_size | |
933 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 934 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
935 | || (hdr->sh_offset + hdr->sh_size |
936 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 937 | { |
dba143ef | 938 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
939 | newsect->lma = (phdr->p_paddr |
940 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
941 | else |
942 | /* We used to use the same adjustment for SEC_LOAD | |
943 | sections, but that doesn't work if the segment | |
944 | is packed with code from multiple VMAs. | |
945 | Instead we calculate the section LMA based on | |
946 | the segment LMA. It is assumed that the | |
947 | segment will contain sections with contiguous | |
948 | LMAs, even if the VMAs are not. */ | |
949 | newsect->lma = (phdr->p_paddr | |
950 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
951 | |
952 | /* With contiguous segments, we can't tell from file | |
953 | offsets whether a section with zero size should | |
954 | be placed at the end of one segment or the | |
955 | beginning of the next. Decide based on vaddr. */ | |
956 | if (hdr->sh_addr >= phdr->p_vaddr | |
957 | && (hdr->sh_addr + hdr->sh_size | |
958 | <= phdr->p_vaddr + phdr->p_memsz)) | |
959 | break; | |
252b5132 RH |
960 | } |
961 | } | |
962 | } | |
963 | } | |
964 | ||
b34976b6 | 965 | return TRUE; |
252b5132 RH |
966 | } |
967 | ||
968 | /* | |
969 | INTERNAL_FUNCTION | |
970 | bfd_elf_find_section | |
971 | ||
972 | SYNOPSIS | |
973 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
974 | ||
975 | DESCRIPTION | |
976 | Helper functions for GDB to locate the string tables. | |
977 | Since BFD hides string tables from callers, GDB needs to use an | |
978 | internal hook to find them. Sun's .stabstr, in particular, | |
979 | isn't even pointed to by the .stab section, so ordinary | |
980 | mechanisms wouldn't work to find it, even if we had some. | |
981 | */ | |
982 | ||
983 | struct elf_internal_shdr * | |
217aa764 | 984 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
985 | { |
986 | Elf_Internal_Shdr **i_shdrp; | |
987 | char *shstrtab; | |
988 | unsigned int max; | |
989 | unsigned int i; | |
990 | ||
991 | i_shdrp = elf_elfsections (abfd); | |
992 | if (i_shdrp != NULL) | |
993 | { | |
9ad5cbcf AM |
994 | shstrtab = bfd_elf_get_str_section (abfd, |
995 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
996 | if (shstrtab != NULL) |
997 | { | |
9ad5cbcf | 998 | max = elf_numsections (abfd); |
252b5132 RH |
999 | for (i = 1; i < max; i++) |
1000 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
1001 | return i_shdrp[i]; | |
1002 | } | |
1003 | } | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | const char *const bfd_elf_section_type_names[] = { | |
1008 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1009 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1010 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1011 | }; | |
1012 | ||
1049f94e | 1013 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1014 | output, and the reloc is against an external symbol, and nothing |
1015 | has given us any additional addend, the resulting reloc will also | |
1016 | be against the same symbol. In such a case, we don't want to | |
1017 | change anything about the way the reloc is handled, since it will | |
1018 | all be done at final link time. Rather than put special case code | |
1019 | into bfd_perform_relocation, all the reloc types use this howto | |
1020 | function. It just short circuits the reloc if producing | |
1049f94e | 1021 | relocatable output against an external symbol. */ |
252b5132 | 1022 | |
252b5132 | 1023 | bfd_reloc_status_type |
217aa764 AM |
1024 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1025 | arelent *reloc_entry, | |
1026 | asymbol *symbol, | |
1027 | void *data ATTRIBUTE_UNUSED, | |
1028 | asection *input_section, | |
1029 | bfd *output_bfd, | |
1030 | char **error_message ATTRIBUTE_UNUSED) | |
1031 | { | |
1032 | if (output_bfd != NULL | |
252b5132 RH |
1033 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1034 | && (! reloc_entry->howto->partial_inplace | |
1035 | || reloc_entry->addend == 0)) | |
1036 | { | |
1037 | reloc_entry->address += input_section->output_offset; | |
1038 | return bfd_reloc_ok; | |
1039 | } | |
1040 | ||
1041 | return bfd_reloc_continue; | |
1042 | } | |
1043 | \f | |
d3c456e9 JJ |
1044 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
1045 | ||
1046 | static void | |
217aa764 AM |
1047 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
1048 | asection *sec) | |
d3c456e9 | 1049 | { |
68bfbfcc AM |
1050 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
1051 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
1052 | } |
1053 | ||
8550eb6e JJ |
1054 | /* Finish SHF_MERGE section merging. */ |
1055 | ||
b34976b6 | 1056 | bfd_boolean |
217aa764 | 1057 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 1058 | { |
57ceae94 AM |
1059 | bfd *ibfd; |
1060 | asection *sec; | |
1061 | ||
0eddce27 | 1062 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 1063 | return FALSE; |
57ceae94 AM |
1064 | |
1065 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
1066 | if ((ibfd->flags & DYNAMIC) == 0) | |
1067 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1068 | if ((sec->flags & SEC_MERGE) != 0 | |
1069 | && !bfd_is_abs_section (sec->output_section)) | |
1070 | { | |
1071 | struct bfd_elf_section_data *secdata; | |
1072 | ||
1073 | secdata = elf_section_data (sec); | |
1074 | if (! _bfd_add_merge_section (abfd, | |
1075 | &elf_hash_table (info)->merge_info, | |
1076 | sec, &secdata->sec_info)) | |
1077 | return FALSE; | |
1078 | else if (secdata->sec_info) | |
1079 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
1080 | } | |
1081 | ||
1082 | if (elf_hash_table (info)->merge_info != NULL) | |
1083 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 1084 | merge_sections_remove_hook); |
b34976b6 | 1085 | return TRUE; |
8550eb6e | 1086 | } |
2d653fc7 AM |
1087 | |
1088 | void | |
217aa764 | 1089 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1090 | { |
1091 | sec->output_section = bfd_abs_section_ptr; | |
1092 | sec->output_offset = sec->vma; | |
0eddce27 | 1093 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1094 | return; |
1095 | ||
68bfbfcc | 1096 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1097 | } |
8550eb6e | 1098 | \f |
0ac4564e L |
1099 | /* Copy the program header and other data from one object module to |
1100 | another. */ | |
252b5132 | 1101 | |
b34976b6 | 1102 | bfd_boolean |
217aa764 | 1103 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1104 | { |
1105 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1106 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1107 | return TRUE; |
2d502050 L |
1108 | |
1109 | BFD_ASSERT (!elf_flags_init (obfd) | |
1110 | || (elf_elfheader (obfd)->e_flags | |
1111 | == elf_elfheader (ibfd)->e_flags)); | |
1112 | ||
0ac4564e | 1113 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1114 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1115 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1116 | |
1117 | /* Copy object attributes. */ | |
1118 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
1119 | ||
b34976b6 | 1120 | return TRUE; |
2d502050 L |
1121 | } |
1122 | ||
cedc298e L |
1123 | static const char * |
1124 | get_segment_type (unsigned int p_type) | |
1125 | { | |
1126 | const char *pt; | |
1127 | switch (p_type) | |
1128 | { | |
1129 | case PT_NULL: pt = "NULL"; break; | |
1130 | case PT_LOAD: pt = "LOAD"; break; | |
1131 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1132 | case PT_INTERP: pt = "INTERP"; break; | |
1133 | case PT_NOTE: pt = "NOTE"; break; | |
1134 | case PT_SHLIB: pt = "SHLIB"; break; | |
1135 | case PT_PHDR: pt = "PHDR"; break; | |
1136 | case PT_TLS: pt = "TLS"; break; | |
1137 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
1138 | case PT_GNU_STACK: pt = "STACK"; break; | |
1139 | case PT_GNU_RELRO: pt = "RELRO"; break; | |
1140 | default: pt = NULL; break; | |
1141 | } | |
1142 | return pt; | |
1143 | } | |
1144 | ||
f0b79d91 L |
1145 | /* Print out the program headers. */ |
1146 | ||
b34976b6 | 1147 | bfd_boolean |
217aa764 | 1148 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1149 | { |
217aa764 | 1150 | FILE *f = farg; |
252b5132 RH |
1151 | Elf_Internal_Phdr *p; |
1152 | asection *s; | |
1153 | bfd_byte *dynbuf = NULL; | |
1154 | ||
1155 | p = elf_tdata (abfd)->phdr; | |
1156 | if (p != NULL) | |
1157 | { | |
1158 | unsigned int i, c; | |
1159 | ||
1160 | fprintf (f, _("\nProgram Header:\n")); | |
1161 | c = elf_elfheader (abfd)->e_phnum; | |
1162 | for (i = 0; i < c; i++, p++) | |
1163 | { | |
cedc298e | 1164 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1165 | char buf[20]; |
1166 | ||
cedc298e | 1167 | if (pt == NULL) |
252b5132 | 1168 | { |
cedc298e L |
1169 | sprintf (buf, "0x%lx", p->p_type); |
1170 | pt = buf; | |
252b5132 | 1171 | } |
dc810e39 | 1172 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1173 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1174 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1175 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1176 | fprintf (f, " paddr 0x"); |
60b89a18 | 1177 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1178 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1179 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1180 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1181 | fprintf (f, " memsz 0x"); |
60b89a18 | 1182 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1183 | fprintf (f, " flags %c%c%c", |
1184 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1185 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1186 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1187 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1188 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1189 | fprintf (f, "\n"); |
1190 | } | |
1191 | } | |
1192 | ||
1193 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1194 | if (s != NULL) | |
1195 | { | |
1196 | int elfsec; | |
dc810e39 | 1197 | unsigned long shlink; |
252b5132 RH |
1198 | bfd_byte *extdyn, *extdynend; |
1199 | size_t extdynsize; | |
217aa764 | 1200 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1201 | |
1202 | fprintf (f, _("\nDynamic Section:\n")); | |
1203 | ||
eea6121a | 1204 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1205 | goto error_return; |
1206 | ||
1207 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1208 | if (elfsec == -1) | |
1209 | goto error_return; | |
dc810e39 | 1210 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1211 | |
1212 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1213 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1214 | ||
1215 | extdyn = dynbuf; | |
eea6121a | 1216 | extdynend = extdyn + s->size; |
252b5132 RH |
1217 | for (; extdyn < extdynend; extdyn += extdynsize) |
1218 | { | |
1219 | Elf_Internal_Dyn dyn; | |
1220 | const char *name; | |
1221 | char ab[20]; | |
b34976b6 | 1222 | bfd_boolean stringp; |
252b5132 | 1223 | |
217aa764 | 1224 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1225 | |
1226 | if (dyn.d_tag == DT_NULL) | |
1227 | break; | |
1228 | ||
b34976b6 | 1229 | stringp = FALSE; |
252b5132 RH |
1230 | switch (dyn.d_tag) |
1231 | { | |
1232 | default: | |
1233 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1234 | name = ab; | |
1235 | break; | |
1236 | ||
b34976b6 | 1237 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1238 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1239 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1240 | case DT_HASH: name = "HASH"; break; | |
1241 | case DT_STRTAB: name = "STRTAB"; break; | |
1242 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1243 | case DT_RELA: name = "RELA"; break; | |
1244 | case DT_RELASZ: name = "RELASZ"; break; | |
1245 | case DT_RELAENT: name = "RELAENT"; break; | |
1246 | case DT_STRSZ: name = "STRSZ"; break; | |
1247 | case DT_SYMENT: name = "SYMENT"; break; | |
1248 | case DT_INIT: name = "INIT"; break; | |
1249 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1250 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1251 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1252 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1253 | case DT_REL: name = "REL"; break; | |
1254 | case DT_RELSZ: name = "RELSZ"; break; | |
1255 | case DT_RELENT: name = "RELENT"; break; | |
1256 | case DT_PLTREL: name = "PLTREL"; break; | |
1257 | case DT_DEBUG: name = "DEBUG"; break; | |
1258 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1259 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1260 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1261 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1262 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1263 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1264 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1265 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1266 | case DT_FLAGS: name = "FLAGS"; break; |
1267 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1268 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1269 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1270 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1271 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1272 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1273 | case DT_FEATURE: name = "FEATURE"; break; | |
1274 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1275 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1276 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1277 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1278 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1279 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1280 | case DT_PLTPAD: name = "PLTPAD"; break; |
1281 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1282 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1283 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1284 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1285 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1286 | case DT_VERSYM: name = "VERSYM"; break; |
1287 | case DT_VERDEF: name = "VERDEF"; break; | |
1288 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1289 | case DT_VERNEED: name = "VERNEED"; break; | |
1290 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1291 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1292 | case DT_USED: name = "USED"; break; |
b34976b6 | 1293 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1294 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1295 | } |
1296 | ||
1297 | fprintf (f, " %-11s ", name); | |
1298 | if (! stringp) | |
1299 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1300 | else | |
1301 | { | |
1302 | const char *string; | |
dc810e39 | 1303 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1304 | |
dc810e39 | 1305 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1306 | if (string == NULL) |
1307 | goto error_return; | |
1308 | fprintf (f, "%s", string); | |
1309 | } | |
1310 | fprintf (f, "\n"); | |
1311 | } | |
1312 | ||
1313 | free (dynbuf); | |
1314 | dynbuf = NULL; | |
1315 | } | |
1316 | ||
1317 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1318 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1319 | { | |
fc0e6df6 | 1320 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1321 | return FALSE; |
252b5132 RH |
1322 | } |
1323 | ||
1324 | if (elf_dynverdef (abfd) != 0) | |
1325 | { | |
1326 | Elf_Internal_Verdef *t; | |
1327 | ||
1328 | fprintf (f, _("\nVersion definitions:\n")); | |
1329 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1330 | { | |
1331 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1332 | t->vd_flags, t->vd_hash, |
1333 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1334 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1335 | { |
1336 | Elf_Internal_Verdaux *a; | |
1337 | ||
1338 | fprintf (f, "\t"); | |
1339 | for (a = t->vd_auxptr->vda_nextptr; | |
1340 | a != NULL; | |
1341 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1342 | fprintf (f, "%s ", |
1343 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1344 | fprintf (f, "\n"); |
1345 | } | |
1346 | } | |
1347 | } | |
1348 | ||
1349 | if (elf_dynverref (abfd) != 0) | |
1350 | { | |
1351 | Elf_Internal_Verneed *t; | |
1352 | ||
1353 | fprintf (f, _("\nVersion References:\n")); | |
1354 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1355 | { | |
1356 | Elf_Internal_Vernaux *a; | |
1357 | ||
d0fb9a8d JJ |
1358 | fprintf (f, _(" required from %s:\n"), |
1359 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1360 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1361 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1362 | a->vna_flags, a->vna_other, |
1363 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1364 | } |
1365 | } | |
1366 | ||
b34976b6 | 1367 | return TRUE; |
252b5132 RH |
1368 | |
1369 | error_return: | |
1370 | if (dynbuf != NULL) | |
1371 | free (dynbuf); | |
b34976b6 | 1372 | return FALSE; |
252b5132 RH |
1373 | } |
1374 | ||
1375 | /* Display ELF-specific fields of a symbol. */ | |
1376 | ||
1377 | void | |
217aa764 AM |
1378 | bfd_elf_print_symbol (bfd *abfd, |
1379 | void *filep, | |
1380 | asymbol *symbol, | |
1381 | bfd_print_symbol_type how) | |
252b5132 | 1382 | { |
217aa764 | 1383 | FILE *file = filep; |
252b5132 RH |
1384 | switch (how) |
1385 | { | |
1386 | case bfd_print_symbol_name: | |
1387 | fprintf (file, "%s", symbol->name); | |
1388 | break; | |
1389 | case bfd_print_symbol_more: | |
1390 | fprintf (file, "elf "); | |
60b89a18 | 1391 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1392 | fprintf (file, " %lx", (long) symbol->flags); |
1393 | break; | |
1394 | case bfd_print_symbol_all: | |
1395 | { | |
4e8a9624 AM |
1396 | const char *section_name; |
1397 | const char *name = NULL; | |
9c5bfbb7 | 1398 | const struct elf_backend_data *bed; |
7a13edea | 1399 | unsigned char st_other; |
dbb410c3 | 1400 | bfd_vma val; |
c044fabd | 1401 | |
252b5132 | 1402 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1403 | |
1404 | bed = get_elf_backend_data (abfd); | |
1405 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1406 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1407 | |
1408 | if (name == NULL) | |
1409 | { | |
7ee38065 | 1410 | name = symbol->name; |
217aa764 | 1411 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1412 | } |
1413 | ||
252b5132 RH |
1414 | fprintf (file, " %s\t", section_name); |
1415 | /* Print the "other" value for a symbol. For common symbols, | |
1416 | we've already printed the size; now print the alignment. | |
1417 | For other symbols, we have no specified alignment, and | |
1418 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1419 | if (bfd_is_com_section (symbol->section)) |
1420 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1421 | else | |
1422 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1423 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1424 | |
1425 | /* If we have version information, print it. */ | |
1426 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1427 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1428 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1429 | { | |
1430 | unsigned int vernum; | |
1431 | const char *version_string; | |
1432 | ||
1433 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1434 | ||
1435 | if (vernum == 0) | |
1436 | version_string = ""; | |
1437 | else if (vernum == 1) | |
1438 | version_string = "Base"; | |
1439 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1440 | version_string = | |
1441 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1442 | else | |
1443 | { | |
1444 | Elf_Internal_Verneed *t; | |
1445 | ||
1446 | version_string = ""; | |
1447 | for (t = elf_tdata (abfd)->verref; | |
1448 | t != NULL; | |
1449 | t = t->vn_nextref) | |
1450 | { | |
1451 | Elf_Internal_Vernaux *a; | |
1452 | ||
1453 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1454 | { | |
1455 | if (a->vna_other == vernum) | |
1456 | { | |
1457 | version_string = a->vna_nodename; | |
1458 | break; | |
1459 | } | |
1460 | } | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1465 | fprintf (file, " %-11s", version_string); | |
1466 | else | |
1467 | { | |
1468 | int i; | |
1469 | ||
1470 | fprintf (file, " (%s)", version_string); | |
1471 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1472 | putc (' ', file); | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1477 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1478 | |
7a13edea NC |
1479 | switch (st_other) |
1480 | { | |
1481 | case 0: break; | |
1482 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1483 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1484 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1485 | default: | |
1486 | /* Some other non-defined flags are also present, so print | |
1487 | everything hex. */ | |
1488 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1489 | } | |
252b5132 | 1490 | |
587ff49e | 1491 | fprintf (file, " %s", name); |
252b5132 RH |
1492 | } |
1493 | break; | |
1494 | } | |
1495 | } | |
1496 | \f | |
1497 | /* Create an entry in an ELF linker hash table. */ | |
1498 | ||
1499 | struct bfd_hash_entry * | |
217aa764 AM |
1500 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1501 | struct bfd_hash_table *table, | |
1502 | const char *string) | |
252b5132 | 1503 | { |
252b5132 RH |
1504 | /* Allocate the structure if it has not already been allocated by a |
1505 | subclass. */ | |
51b64d56 AM |
1506 | if (entry == NULL) |
1507 | { | |
1508 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1509 | if (entry == NULL) | |
1510 | return entry; | |
1511 | } | |
252b5132 RH |
1512 | |
1513 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1514 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1515 | if (entry != NULL) | |
252b5132 | 1516 | { |
51b64d56 AM |
1517 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1518 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1519 | ||
252b5132 RH |
1520 | /* Set local fields. */ |
1521 | ret->indx = -1; | |
252b5132 | 1522 | ret->dynindx = -1; |
a6aa5195 AM |
1523 | ret->got = htab->init_got_refcount; |
1524 | ret->plt = htab->init_plt_refcount; | |
f6e332e6 AM |
1525 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) |
1526 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1527 | /* Assume that we have been called by a non-ELF symbol reader. |
1528 | This flag is then reset by the code which reads an ELF input | |
1529 | file. This ensures that a symbol created by a non-ELF symbol | |
1530 | reader will have the flag set correctly. */ | |
f5385ebf | 1531 | ret->non_elf = 1; |
252b5132 RH |
1532 | } |
1533 | ||
51b64d56 | 1534 | return entry; |
252b5132 RH |
1535 | } |
1536 | ||
2920b85c | 1537 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1538 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1539 | |
c61b8717 | 1540 | void |
fcfa13d2 | 1541 | _bfd_elf_link_hash_copy_indirect (struct bfd_link_info *info, |
217aa764 AM |
1542 | struct elf_link_hash_entry *dir, |
1543 | struct elf_link_hash_entry *ind) | |
2920b85c | 1544 | { |
fcfa13d2 | 1545 | struct elf_link_hash_table *htab; |
3c3e9281 | 1546 | |
2920b85c RH |
1547 | /* Copy down any references that we may have already seen to the |
1548 | symbol which just became indirect. */ | |
1549 | ||
f5385ebf AM |
1550 | dir->ref_dynamic |= ind->ref_dynamic; |
1551 | dir->ref_regular |= ind->ref_regular; | |
1552 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1553 | dir->non_got_ref |= ind->non_got_ref; | |
1554 | dir->needs_plt |= ind->needs_plt; | |
1555 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1556 | |
1e370bd2 | 1557 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1558 | return; |
1559 | ||
51b64d56 | 1560 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1561 | These may have been already set up by a check_relocs routine. */ |
fcfa13d2 AM |
1562 | htab = elf_hash_table (info); |
1563 | if (ind->got.refcount > htab->init_got_refcount.refcount) | |
2920b85c | 1564 | { |
fcfa13d2 AM |
1565 | if (dir->got.refcount < 0) |
1566 | dir->got.refcount = 0; | |
1567 | dir->got.refcount += ind->got.refcount; | |
1568 | ind->got.refcount = htab->init_got_refcount.refcount; | |
2920b85c | 1569 | } |
2920b85c | 1570 | |
fcfa13d2 | 1571 | if (ind->plt.refcount > htab->init_plt_refcount.refcount) |
2920b85c | 1572 | { |
fcfa13d2 AM |
1573 | if (dir->plt.refcount < 0) |
1574 | dir->plt.refcount = 0; | |
1575 | dir->plt.refcount += ind->plt.refcount; | |
1576 | ind->plt.refcount = htab->init_plt_refcount.refcount; | |
2920b85c | 1577 | } |
2920b85c | 1578 | |
fcfa13d2 | 1579 | if (ind->dynindx != -1) |
2920b85c | 1580 | { |
fcfa13d2 AM |
1581 | if (dir->dynindx != -1) |
1582 | _bfd_elf_strtab_delref (htab->dynstr, dir->dynstr_index); | |
2920b85c RH |
1583 | dir->dynindx = ind->dynindx; |
1584 | dir->dynstr_index = ind->dynstr_index; | |
1585 | ind->dynindx = -1; | |
1586 | ind->dynstr_index = 0; | |
1587 | } | |
2920b85c RH |
1588 | } |
1589 | ||
c61b8717 | 1590 | void |
217aa764 AM |
1591 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1592 | struct elf_link_hash_entry *h, | |
1593 | bfd_boolean force_local) | |
2920b85c | 1594 | { |
a6aa5195 | 1595 | h->plt = elf_hash_table (info)->init_plt_offset; |
f5385ebf | 1596 | h->needs_plt = 0; |
e5094212 AM |
1597 | if (force_local) |
1598 | { | |
f5385ebf | 1599 | h->forced_local = 1; |
e5094212 AM |
1600 | if (h->dynindx != -1) |
1601 | { | |
1602 | h->dynindx = -1; | |
1603 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1604 | h->dynstr_index); | |
1605 | } | |
1606 | } | |
2920b85c RH |
1607 | } |
1608 | ||
252b5132 RH |
1609 | /* Initialize an ELF linker hash table. */ |
1610 | ||
b34976b6 | 1611 | bfd_boolean |
217aa764 AM |
1612 | _bfd_elf_link_hash_table_init |
1613 | (struct elf_link_hash_table *table, | |
1614 | bfd *abfd, | |
1615 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1616 | struct bfd_hash_table *, | |
66eb6687 AM |
1617 | const char *), |
1618 | unsigned int entsize) | |
252b5132 | 1619 | { |
b34976b6 | 1620 | bfd_boolean ret; |
a6aa5195 | 1621 | int can_refcount = get_elf_backend_data (abfd)->can_refcount; |
8ea2e4bd | 1622 | |
effdf42a | 1623 | memset (table, 0, sizeof * table); |
a6aa5195 AM |
1624 | table->init_got_refcount.refcount = can_refcount - 1; |
1625 | table->init_plt_refcount.refcount = can_refcount - 1; | |
1626 | table->init_got_offset.offset = -(bfd_vma) 1; | |
1627 | table->init_plt_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1628 | /* The first dynamic symbol is a dummy. */ |
1629 | table->dynsymcount = 1; | |
73722af0 | 1630 | |
66eb6687 | 1631 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
8ea2e4bd NC |
1632 | table->root.type = bfd_link_elf_hash_table; |
1633 | ||
1634 | return ret; | |
252b5132 RH |
1635 | } |
1636 | ||
1637 | /* Create an ELF linker hash table. */ | |
1638 | ||
1639 | struct bfd_link_hash_table * | |
217aa764 | 1640 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1641 | { |
1642 | struct elf_link_hash_table *ret; | |
dc810e39 | 1643 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1644 | |
217aa764 AM |
1645 | ret = bfd_malloc (amt); |
1646 | if (ret == NULL) | |
252b5132 RH |
1647 | return NULL; |
1648 | ||
66eb6687 AM |
1649 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc, |
1650 | sizeof (struct elf_link_hash_entry))) | |
252b5132 | 1651 | { |
e2d34d7d | 1652 | free (ret); |
252b5132 RH |
1653 | return NULL; |
1654 | } | |
1655 | ||
1656 | return &ret->root; | |
1657 | } | |
1658 | ||
1659 | /* This is a hook for the ELF emulation code in the generic linker to | |
1660 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1661 | entry for a dynamic object. */ |
252b5132 RH |
1662 | |
1663 | void | |
217aa764 | 1664 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1665 | { |
1666 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1667 | && bfd_get_format (abfd) == bfd_object) | |
1668 | elf_dt_name (abfd) = name; | |
1669 | } | |
1670 | ||
e56f61be L |
1671 | int |
1672 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1673 | { | |
1674 | int lib_class; | |
1675 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1676 | && bfd_get_format (abfd) == bfd_object) | |
1677 | lib_class = elf_dyn_lib_class (abfd); | |
1678 | else | |
1679 | lib_class = 0; | |
1680 | return lib_class; | |
1681 | } | |
1682 | ||
74816898 | 1683 | void |
23fe9577 | 1684 | bfd_elf_set_dyn_lib_class (bfd *abfd, enum dynamic_lib_link_class lib_class) |
74816898 L |
1685 | { |
1686 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1687 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1688 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1689 | } |
1690 | ||
252b5132 RH |
1691 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1692 | the linker ELF emulation code. */ | |
1693 | ||
1694 | struct bfd_link_needed_list * | |
217aa764 AM |
1695 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1696 | struct bfd_link_info *info) | |
252b5132 | 1697 | { |
0eddce27 | 1698 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1699 | return NULL; |
1700 | return elf_hash_table (info)->needed; | |
1701 | } | |
1702 | ||
a963dc6a L |
1703 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1704 | hook for the linker ELF emulation code. */ | |
1705 | ||
1706 | struct bfd_link_needed_list * | |
217aa764 AM |
1707 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1708 | struct bfd_link_info *info) | |
a963dc6a | 1709 | { |
0eddce27 | 1710 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1711 | return NULL; |
1712 | return elf_hash_table (info)->runpath; | |
1713 | } | |
1714 | ||
252b5132 RH |
1715 | /* Get the name actually used for a dynamic object for a link. This |
1716 | is the SONAME entry if there is one. Otherwise, it is the string | |
1717 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1718 | ||
1719 | const char * | |
217aa764 | 1720 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1721 | { |
1722 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1723 | && bfd_get_format (abfd) == bfd_object) | |
1724 | return elf_dt_name (abfd); | |
1725 | return NULL; | |
1726 | } | |
1727 | ||
1728 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1729 | the ELF linker emulation code. */ | |
1730 | ||
b34976b6 | 1731 | bfd_boolean |
217aa764 AM |
1732 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1733 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1734 | { |
1735 | asection *s; | |
1736 | bfd_byte *dynbuf = NULL; | |
1737 | int elfsec; | |
dc810e39 | 1738 | unsigned long shlink; |
252b5132 RH |
1739 | bfd_byte *extdyn, *extdynend; |
1740 | size_t extdynsize; | |
217aa764 | 1741 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1742 | |
1743 | *pneeded = NULL; | |
1744 | ||
1745 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1746 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1747 | return TRUE; |
252b5132 RH |
1748 | |
1749 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1750 | if (s == NULL || s->size == 0) |
b34976b6 | 1751 | return TRUE; |
252b5132 | 1752 | |
eea6121a | 1753 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1754 | goto error_return; |
1755 | ||
1756 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1757 | if (elfsec == -1) | |
1758 | goto error_return; | |
1759 | ||
dc810e39 | 1760 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1761 | |
1762 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1763 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1764 | ||
1765 | extdyn = dynbuf; | |
eea6121a | 1766 | extdynend = extdyn + s->size; |
252b5132 RH |
1767 | for (; extdyn < extdynend; extdyn += extdynsize) |
1768 | { | |
1769 | Elf_Internal_Dyn dyn; | |
1770 | ||
217aa764 | 1771 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1772 | |
1773 | if (dyn.d_tag == DT_NULL) | |
1774 | break; | |
1775 | ||
1776 | if (dyn.d_tag == DT_NEEDED) | |
1777 | { | |
1778 | const char *string; | |
1779 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1780 | unsigned int tagv = dyn.d_un.d_val; |
1781 | bfd_size_type amt; | |
252b5132 | 1782 | |
dc810e39 | 1783 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1784 | if (string == NULL) |
1785 | goto error_return; | |
1786 | ||
dc810e39 | 1787 | amt = sizeof *l; |
217aa764 | 1788 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1789 | if (l == NULL) |
1790 | goto error_return; | |
1791 | ||
1792 | l->by = abfd; | |
1793 | l->name = string; | |
1794 | l->next = *pneeded; | |
1795 | *pneeded = l; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | free (dynbuf); | |
1800 | ||
b34976b6 | 1801 | return TRUE; |
252b5132 RH |
1802 | |
1803 | error_return: | |
1804 | if (dynbuf != NULL) | |
1805 | free (dynbuf); | |
b34976b6 | 1806 | return FALSE; |
252b5132 RH |
1807 | } |
1808 | \f | |
1809 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1810 | ||
1811 | struct bfd_strtab_hash * | |
217aa764 | 1812 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1813 | { |
1814 | struct bfd_strtab_hash *ret; | |
1815 | ||
1816 | ret = _bfd_stringtab_init (); | |
1817 | if (ret != NULL) | |
1818 | { | |
1819 | bfd_size_type loc; | |
1820 | ||
b34976b6 | 1821 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1822 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1823 | if (loc == (bfd_size_type) -1) | |
1824 | { | |
1825 | _bfd_stringtab_free (ret); | |
1826 | ret = NULL; | |
1827 | } | |
1828 | } | |
1829 | return ret; | |
1830 | } | |
1831 | \f | |
1832 | /* ELF .o/exec file reading */ | |
1833 | ||
c044fabd | 1834 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1835 | |
b34976b6 | 1836 | bfd_boolean |
217aa764 | 1837 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1838 | { |
1839 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1840 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1841 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1842 | const char *name; |
252b5132 | 1843 | |
1b3a8575 AM |
1844 | name = bfd_elf_string_from_elf_section (abfd, |
1845 | elf_elfheader (abfd)->e_shstrndx, | |
1846 | hdr->sh_name); | |
933d961a JJ |
1847 | if (name == NULL) |
1848 | return FALSE; | |
252b5132 RH |
1849 | |
1850 | switch (hdr->sh_type) | |
1851 | { | |
1852 | case SHT_NULL: | |
1853 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1854 | return TRUE; |
252b5132 RH |
1855 | |
1856 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1857 | case SHT_NOBITS: /* .bss section. */ |
1858 | case SHT_HASH: /* .hash section. */ | |
1859 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1860 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1861 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1862 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1863 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1864 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1865 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1866 | |
797fc050 | 1867 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1868 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1869 | return FALSE; |
8e0ed13f NC |
1870 | if (hdr->sh_link > elf_numsections (abfd) |
1871 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1872 | return FALSE; | |
797fc050 AM |
1873 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1874 | { | |
1875 | Elf_Internal_Shdr *dynsymhdr; | |
1876 | ||
1877 | /* The shared libraries distributed with hpux11 have a bogus | |
1878 | sh_link field for the ".dynamic" section. Find the | |
1879 | string table for the ".dynsym" section instead. */ | |
1880 | if (elf_dynsymtab (abfd) != 0) | |
1881 | { | |
1882 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1883 | hdr->sh_link = dynsymhdr->sh_link; | |
1884 | } | |
1885 | else | |
1886 | { | |
1887 | unsigned int i, num_sec; | |
1888 | ||
1889 | num_sec = elf_numsections (abfd); | |
1890 | for (i = 1; i < num_sec; i++) | |
1891 | { | |
1892 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1893 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1894 | { | |
1895 | hdr->sh_link = dynsymhdr->sh_link; | |
1896 | break; | |
1897 | } | |
1898 | } | |
1899 | } | |
1900 | } | |
1901 | break; | |
1902 | ||
252b5132 RH |
1903 | case SHT_SYMTAB: /* A symbol table */ |
1904 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1905 | return TRUE; |
252b5132 | 1906 | |
a50b2160 JJ |
1907 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1908 | return FALSE; | |
252b5132 RH |
1909 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1910 | elf_onesymtab (abfd) = shindex; | |
1911 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1912 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1913 | abfd->flags |= HAS_SYMS; | |
1914 | ||
1915 | /* Sometimes a shared object will map in the symbol table. If | |
1916 | SHF_ALLOC is set, and this is a shared object, then we also | |
1917 | treat this section as a BFD section. We can not base the | |
1918 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1919 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1920 | linker. */ |
1921 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1922 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1923 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1924 | shindex)) | |
b34976b6 | 1925 | return FALSE; |
252b5132 | 1926 | |
1b3a8575 AM |
1927 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1928 | can't read symbols without that section loaded as well. It | |
1929 | is most likely specified by the next section header. */ | |
1930 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1931 | { | |
1932 | unsigned int i, num_sec; | |
1933 | ||
1934 | num_sec = elf_numsections (abfd); | |
1935 | for (i = shindex + 1; i < num_sec; i++) | |
1936 | { | |
1937 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1938 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1939 | && hdr2->sh_link == shindex) | |
1940 | break; | |
1941 | } | |
1942 | if (i == num_sec) | |
1943 | for (i = 1; i < shindex; i++) | |
1944 | { | |
1945 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1946 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1947 | && hdr2->sh_link == shindex) | |
1948 | break; | |
1949 | } | |
1950 | if (i != shindex) | |
1951 | return bfd_section_from_shdr (abfd, i); | |
1952 | } | |
b34976b6 | 1953 | return TRUE; |
252b5132 RH |
1954 | |
1955 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1956 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1957 | return TRUE; |
252b5132 | 1958 | |
a50b2160 JJ |
1959 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1960 | return FALSE; | |
252b5132 RH |
1961 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1962 | elf_dynsymtab (abfd) = shindex; | |
1963 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1964 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1965 | abfd->flags |= HAS_SYMS; | |
1966 | ||
1967 | /* Besides being a symbol table, we also treat this as a regular | |
1968 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1969 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1970 | |
9ad5cbcf AM |
1971 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1972 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1973 | return TRUE; |
9ad5cbcf | 1974 | |
1b3a8575 | 1975 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1976 | elf_symtab_shndx (abfd) = shindex; |
1977 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1978 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1979 | return TRUE; |
9ad5cbcf | 1980 | |
252b5132 RH |
1981 | case SHT_STRTAB: /* A string table */ |
1982 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1983 | return TRUE; |
252b5132 RH |
1984 | if (ehdr->e_shstrndx == shindex) |
1985 | { | |
1986 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1987 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1988 | return TRUE; |
252b5132 | 1989 | } |
1b3a8575 AM |
1990 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1991 | { | |
1992 | symtab_strtab: | |
1993 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1994 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1995 | return TRUE; | |
1996 | } | |
1997 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1998 | { | |
1999 | dynsymtab_strtab: | |
2000 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
2001 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
2002 | elf_elfsections (abfd)[shindex] = hdr; | |
2003 | /* We also treat this as a regular section, so that objcopy | |
2004 | can handle it. */ | |
6dc132d9 L |
2005 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2006 | shindex); | |
1b3a8575 | 2007 | } |
252b5132 | 2008 | |
1b3a8575 AM |
2009 | /* If the string table isn't one of the above, then treat it as a |
2010 | regular section. We need to scan all the headers to be sure, | |
2011 | just in case this strtab section appeared before the above. */ | |
2012 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
2013 | { | |
2014 | unsigned int i, num_sec; | |
252b5132 | 2015 | |
1b3a8575 AM |
2016 | num_sec = elf_numsections (abfd); |
2017 | for (i = 1; i < num_sec; i++) | |
2018 | { | |
2019 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
2020 | if (hdr2->sh_link == shindex) | |
2021 | { | |
933d961a JJ |
2022 | /* Prevent endless recursion on broken objects. */ |
2023 | if (i == shindex) | |
2024 | return FALSE; | |
1b3a8575 AM |
2025 | if (! bfd_section_from_shdr (abfd, i)) |
2026 | return FALSE; | |
2027 | if (elf_onesymtab (abfd) == i) | |
2028 | goto symtab_strtab; | |
2029 | if (elf_dynsymtab (abfd) == i) | |
2030 | goto dynsymtab_strtab; | |
2031 | } | |
2032 | } | |
2033 | } | |
6dc132d9 | 2034 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2035 | |
2036 | case SHT_REL: | |
2037 | case SHT_RELA: | |
2038 | /* *These* do a lot of work -- but build no sections! */ | |
2039 | { | |
2040 | asection *target_sect; | |
2041 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 2042 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 2043 | |
aa2ca951 JJ |
2044 | if (hdr->sh_entsize |
2045 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
2046 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
2047 | return FALSE; | |
2048 | ||
03ae5f59 | 2049 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
2050 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
2051 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
2052 | { |
2053 | ((*_bfd_error_handler) | |
d003868e AM |
2054 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
2055 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
2056 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2057 | shindex); | |
03ae5f59 ILT |
2058 | } |
2059 | ||
252b5132 RH |
2060 | /* For some incomprehensible reason Oracle distributes |
2061 | libraries for Solaris in which some of the objects have | |
2062 | bogus sh_link fields. It would be nice if we could just | |
2063 | reject them, but, unfortunately, some people need to use | |
2064 | them. We scan through the section headers; if we find only | |
2065 | one suitable symbol table, we clobber the sh_link to point | |
2066 | to it. I hope this doesn't break anything. */ | |
2067 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
2068 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
2069 | { | |
9ad5cbcf | 2070 | unsigned int scan; |
252b5132 RH |
2071 | int found; |
2072 | ||
2073 | found = 0; | |
9ad5cbcf | 2074 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2075 | { |
2076 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2077 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2078 | { | |
2079 | if (found != 0) | |
2080 | { | |
2081 | found = 0; | |
2082 | break; | |
2083 | } | |
2084 | found = scan; | |
2085 | } | |
2086 | } | |
2087 | if (found != 0) | |
2088 | hdr->sh_link = found; | |
2089 | } | |
2090 | ||
2091 | /* Get the symbol table. */ | |
1b3a8575 AM |
2092 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2093 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2094 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 2095 | return FALSE; |
252b5132 RH |
2096 | |
2097 | /* If this reloc section does not use the main symbol table we | |
2098 | don't treat it as a reloc section. BFD can't adequately | |
2099 | represent such a section, so at least for now, we don't | |
c044fabd | 2100 | try. We just present it as a normal section. We also |
60bcf0fa | 2101 | can't use it as a reloc section if it points to the null |
185ef66d AM |
2102 | section, an invalid section, or another reloc section. */ |
2103 | if (hdr->sh_link != elf_onesymtab (abfd) | |
2104 | || hdr->sh_info == SHN_UNDEF | |
2105 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
2106 | || hdr->sh_info >= num_sec | |
2107 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2108 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
2109 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2110 | shindex); | |
252b5132 RH |
2111 | |
2112 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2113 | return FALSE; |
252b5132 RH |
2114 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2115 | if (target_sect == NULL) | |
b34976b6 | 2116 | return FALSE; |
252b5132 RH |
2117 | |
2118 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2119 | || target_sect->reloc_count == 0) | |
2120 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2121 | else | |
2122 | { | |
dc810e39 | 2123 | bfd_size_type amt; |
252b5132 | 2124 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2125 | amt = sizeof (*hdr2); |
217aa764 | 2126 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2127 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2128 | } | |
2129 | *hdr2 = *hdr; | |
2130 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2131 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2132 | target_sect->flags |= SEC_RELOC; |
2133 | target_sect->relocation = NULL; | |
2134 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2135 | /* In the section to which the relocations apply, mark whether |
2136 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2137 | if (hdr->sh_size != 0) |
68bfbfcc | 2138 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2139 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2140 | return TRUE; |
252b5132 | 2141 | } |
252b5132 RH |
2142 | |
2143 | case SHT_GNU_verdef: | |
2144 | elf_dynverdef (abfd) = shindex; | |
2145 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2146 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2147 | |
2148 | case SHT_GNU_versym: | |
a50b2160 JJ |
2149 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
2150 | return FALSE; | |
252b5132 RH |
2151 | elf_dynversym (abfd) = shindex; |
2152 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2153 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2154 | |
2155 | case SHT_GNU_verneed: | |
2156 | elf_dynverref (abfd) = shindex; | |
2157 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2158 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2159 | |
2160 | case SHT_SHLIB: | |
b34976b6 | 2161 | return TRUE; |
252b5132 | 2162 | |
dbb410c3 | 2163 | case SHT_GROUP: |
b885599b AM |
2164 | /* We need a BFD section for objcopy and relocatable linking, |
2165 | and it's handy to have the signature available as the section | |
2166 | name. */ | |
1783205a | 2167 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 2168 | return FALSE; |
b885599b AM |
2169 | name = group_signature (abfd, hdr); |
2170 | if (name == NULL) | |
b34976b6 | 2171 | return FALSE; |
6dc132d9 | 2172 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2173 | return FALSE; |
dbb410c3 AM |
2174 | if (hdr->contents != NULL) |
2175 | { | |
2176 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 2177 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
2178 | asection *s; |
2179 | ||
b885599b AM |
2180 | if (idx->flags & GRP_COMDAT) |
2181 | hdr->bfd_section->flags | |
2182 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2183 | ||
45c5e9ed L |
2184 | /* We try to keep the same section order as it comes in. */ |
2185 | idx += n_elt; | |
dbb410c3 | 2186 | while (--n_elt != 0) |
1783205a NC |
2187 | { |
2188 | --idx; | |
2189 | ||
2190 | if (idx->shdr != NULL | |
2191 | && (s = idx->shdr->bfd_section) != NULL | |
2192 | && elf_next_in_group (s) != NULL) | |
2193 | { | |
2194 | elf_next_in_group (hdr->bfd_section) = s; | |
2195 | break; | |
2196 | } | |
2197 | } | |
dbb410c3 AM |
2198 | } |
2199 | break; | |
2200 | ||
252b5132 | 2201 | default: |
104d59d1 JM |
2202 | /* Possibly an attributes section. */ |
2203 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
2204 | || hdr->sh_type == bed->obj_attrs_section_type) | |
2205 | { | |
2206 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
2207 | return FALSE; | |
2208 | _bfd_elf_parse_attributes (abfd, hdr); | |
2209 | return TRUE; | |
2210 | } | |
2211 | ||
252b5132 | 2212 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
2213 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
2214 | return TRUE; | |
2215 | ||
2216 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
2217 | { | |
2218 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
2219 | /* FIXME: How to properly handle allocated section reserved | |
2220 | for applications? */ | |
2221 | (*_bfd_error_handler) | |
2222 | (_("%B: don't know how to handle allocated, application " | |
2223 | "specific section `%s' [0x%8x]"), | |
2224 | abfd, name, hdr->sh_type); | |
2225 | else | |
2226 | /* Allow sections reserved for applications. */ | |
2227 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2228 | shindex); | |
2229 | } | |
2230 | else if (hdr->sh_type >= SHT_LOPROC | |
2231 | && hdr->sh_type <= SHT_HIPROC) | |
2232 | /* FIXME: We should handle this section. */ | |
2233 | (*_bfd_error_handler) | |
2234 | (_("%B: don't know how to handle processor specific section " | |
2235 | "`%s' [0x%8x]"), | |
2236 | abfd, name, hdr->sh_type); | |
2237 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
2238 | { |
2239 | /* Unrecognised OS-specific sections. */ | |
2240 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
2241 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
2242 | required to correctly process the section and the file should | |
2243 | be rejected with an error message. */ | |
2244 | (*_bfd_error_handler) | |
2245 | (_("%B: don't know how to handle OS specific section " | |
2246 | "`%s' [0x%8x]"), | |
2247 | abfd, name, hdr->sh_type); | |
2248 | else | |
2249 | /* Otherwise it should be processed. */ | |
2250 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
2251 | } | |
3eb70a79 L |
2252 | else |
2253 | /* FIXME: We should handle this section. */ | |
2254 | (*_bfd_error_handler) | |
2255 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
2256 | abfd, name, hdr->sh_type); | |
2257 | ||
2258 | return FALSE; | |
252b5132 RH |
2259 | } |
2260 | ||
b34976b6 | 2261 | return TRUE; |
252b5132 RH |
2262 | } |
2263 | ||
ec338859 AM |
2264 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2265 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2266 | ||
2267 | asection * | |
217aa764 AM |
2268 | bfd_section_from_r_symndx (bfd *abfd, |
2269 | struct sym_sec_cache *cache, | |
2270 | asection *sec, | |
2271 | unsigned long r_symndx) | |
ec338859 | 2272 | { |
ec338859 | 2273 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2274 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2275 | Elf_External_Sym_Shndx eshndx; | |
2276 | Elf_Internal_Sym isym; | |
ec338859 AM |
2277 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2278 | ||
2279 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2280 | return cache->sec[ent]; | |
2281 | ||
2282 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2283 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2284 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2285 | return NULL; |
9ad5cbcf | 2286 | |
ec338859 AM |
2287 | if (cache->abfd != abfd) |
2288 | { | |
2289 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2290 | cache->abfd = abfd; | |
2291 | } | |
2292 | cache->indx[ent] = r_symndx; | |
2293 | cache->sec[ent] = sec; | |
50bc7936 AM |
2294 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2295 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2296 | { |
2297 | asection *s; | |
6cdc0ccc | 2298 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2299 | if (s != NULL) |
2300 | cache->sec[ent] = s; | |
2301 | } | |
2302 | return cache->sec[ent]; | |
2303 | } | |
2304 | ||
252b5132 RH |
2305 | /* Given an ELF section number, retrieve the corresponding BFD |
2306 | section. */ | |
2307 | ||
2308 | asection * | |
217aa764 | 2309 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2310 | { |
9ad5cbcf | 2311 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2312 | return NULL; |
2313 | return elf_elfsections (abfd)[index]->bfd_section; | |
2314 | } | |
2315 | ||
b35d266b | 2316 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2317 | { |
0112cd26 NC |
2318 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, 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_c[] = |
7f4d3958 | 2323 | { |
0112cd26 NC |
2324 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
2325 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2326 | }; |
2327 | ||
b35d266b | 2328 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2329 | { |
0112cd26 NC |
2330 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2331 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2332 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
2333 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
2334 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
2335 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
2336 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
2337 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2338 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2339 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2340 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2341 | }; |
2342 | ||
b35d266b | 2343 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2344 | { |
0112cd26 NC |
2345 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2346 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2347 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2348 | }; |
2349 | ||
b35d266b | 2350 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2351 | { |
0112cd26 NC |
2352 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2353 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2354 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2355 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2356 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2357 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2358 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2359 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2360 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2361 | }; |
2362 | ||
b35d266b | 2363 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2364 | { |
0112cd26 NC |
2365 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2366 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2367 | }; |
2368 | ||
b35d266b | 2369 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2370 | { |
0112cd26 NC |
2371 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2372 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2373 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2374 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2375 | }; |
2376 | ||
b35d266b | 2377 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2378 | { |
0112cd26 NC |
2379 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2380 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2381 | }; |
2382 | ||
b35d266b | 2383 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2384 | { |
0112cd26 NC |
2385 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2386 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2387 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2388 | }; |
2389 | ||
b35d266b | 2390 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2391 | { |
0112cd26 NC |
2392 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2393 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2394 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2395 | }; |
2396 | ||
b35d266b | 2397 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2398 | { |
0112cd26 NC |
2399 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2400 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2401 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2402 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2403 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2404 | }; |
2405 | ||
b35d266b | 2406 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2407 | { |
0112cd26 NC |
2408 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2409 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2410 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2411 | /* See struct bfd_elf_special_section declaration for the semantics of |
2412 | this special case where .prefix_length != strlen (.prefix). */ | |
2413 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2414 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2415 | }; |
2416 | ||
b35d266b | 2417 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2418 | { |
0112cd26 NC |
2419 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2420 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2421 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2422 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2423 | }; |
2424 | ||
b35d266b | 2425 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2426 | { |
7f4d3958 L |
2427 | special_sections_b, /* 'b' */ |
2428 | special_sections_c, /* 'b' */ | |
2429 | special_sections_d, /* 'd' */ | |
2430 | NULL, /* 'e' */ | |
2431 | special_sections_f, /* 'f' */ | |
2432 | special_sections_g, /* 'g' */ | |
2433 | special_sections_h, /* 'h' */ | |
2434 | special_sections_i, /* 'i' */ | |
2435 | NULL, /* 'j' */ | |
2436 | NULL, /* 'k' */ | |
2437 | special_sections_l, /* 'l' */ | |
2438 | NULL, /* 'm' */ | |
2439 | special_sections_n, /* 'n' */ | |
2440 | NULL, /* 'o' */ | |
2441 | special_sections_p, /* 'p' */ | |
2442 | NULL, /* 'q' */ | |
2443 | special_sections_r, /* 'r' */ | |
2444 | special_sections_s, /* 's' */ | |
2445 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2446 | }; |
2447 | ||
551b43fd AM |
2448 | const struct bfd_elf_special_section * |
2449 | _bfd_elf_get_special_section (const char *name, | |
2450 | const struct bfd_elf_special_section *spec, | |
2451 | unsigned int rela) | |
2f89ff8d L |
2452 | { |
2453 | int i; | |
7f4d3958 | 2454 | int len; |
7f4d3958 | 2455 | |
551b43fd | 2456 | len = strlen (name); |
7f4d3958 | 2457 | |
551b43fd | 2458 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2459 | { |
2460 | int suffix_len; | |
551b43fd | 2461 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2462 | |
2463 | if (len < prefix_len) | |
2464 | continue; | |
551b43fd | 2465 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2466 | continue; |
2467 | ||
551b43fd | 2468 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2469 | if (suffix_len <= 0) |
2470 | { | |
2471 | if (name[prefix_len] != 0) | |
2472 | { | |
2473 | if (suffix_len == 0) | |
2474 | continue; | |
2475 | if (name[prefix_len] != '.' | |
2476 | && (suffix_len == -2 | |
551b43fd | 2477 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2478 | continue; |
2479 | } | |
2480 | } | |
2481 | else | |
2482 | { | |
2483 | if (len < prefix_len + suffix_len) | |
2484 | continue; | |
2485 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2486 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2487 | suffix_len) != 0) |
2488 | continue; | |
2489 | } | |
551b43fd | 2490 | return &spec[i]; |
7dcb9820 | 2491 | } |
2f89ff8d L |
2492 | |
2493 | return NULL; | |
2494 | } | |
2495 | ||
7dcb9820 | 2496 | const struct bfd_elf_special_section * |
29ef7005 | 2497 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2498 | { |
551b43fd AM |
2499 | int i; |
2500 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2501 | const struct elf_backend_data *bed; |
2f89ff8d L |
2502 | |
2503 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2504 | if (sec->name == NULL) |
2505 | return NULL; | |
2f89ff8d | 2506 | |
29ef7005 L |
2507 | bed = get_elf_backend_data (abfd); |
2508 | spec = bed->special_sections; | |
2509 | if (spec) | |
2510 | { | |
2511 | spec = _bfd_elf_get_special_section (sec->name, | |
2512 | bed->special_sections, | |
2513 | sec->use_rela_p); | |
2514 | if (spec != NULL) | |
2515 | return spec; | |
2516 | } | |
2517 | ||
551b43fd AM |
2518 | if (sec->name[0] != '.') |
2519 | return NULL; | |
2f89ff8d | 2520 | |
551b43fd AM |
2521 | i = sec->name[1] - 'b'; |
2522 | if (i < 0 || i > 't' - 'b') | |
2523 | return NULL; | |
2524 | ||
2525 | spec = special_sections[i]; | |
2f89ff8d | 2526 | |
551b43fd AM |
2527 | if (spec == NULL) |
2528 | return NULL; | |
2529 | ||
2530 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2531 | } |
2532 | ||
b34976b6 | 2533 | bfd_boolean |
217aa764 | 2534 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2535 | { |
2536 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2537 | const struct elf_backend_data *bed; |
7dcb9820 | 2538 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2539 | |
f0abc2a1 AM |
2540 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2541 | if (sdata == NULL) | |
2542 | { | |
217aa764 | 2543 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2544 | if (sdata == NULL) |
2545 | return FALSE; | |
217aa764 | 2546 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2547 | } |
bf572ba0 | 2548 | |
551b43fd AM |
2549 | /* Indicate whether or not this section should use RELA relocations. */ |
2550 | bed = get_elf_backend_data (abfd); | |
2551 | sec->use_rela_p = bed->default_use_rela_p; | |
2552 | ||
e843e0f8 L |
2553 | /* When we read a file, we don't need to set ELF section type and |
2554 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2555 | anyway. We will set ELF section type and flags for all linker | |
2556 | created sections. If user specifies BFD section flags, we will | |
2557 | set ELF section type and flags based on BFD section flags in | |
2558 | elf_fake_sections. */ | |
2559 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2560 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2561 | { |
551b43fd | 2562 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2563 | if (ssect != NULL) |
2564 | { | |
2565 | elf_section_type (sec) = ssect->type; | |
2566 | elf_section_flags (sec) = ssect->attr; | |
2567 | } | |
2f89ff8d L |
2568 | } |
2569 | ||
f592407e | 2570 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2571 | } |
2572 | ||
2573 | /* Create a new bfd section from an ELF program header. | |
2574 | ||
2575 | Since program segments have no names, we generate a synthetic name | |
2576 | of the form segment<NUM>, where NUM is generally the index in the | |
2577 | program header table. For segments that are split (see below) we | |
2578 | generate the names segment<NUM>a and segment<NUM>b. | |
2579 | ||
2580 | Note that some program segments may have a file size that is different than | |
2581 | (less than) the memory size. All this means is that at execution the | |
2582 | system must allocate the amount of memory specified by the memory size, | |
2583 | but only initialize it with the first "file size" bytes read from the | |
2584 | file. This would occur for example, with program segments consisting | |
2585 | of combined data+bss. | |
2586 | ||
2587 | To handle the above situation, this routine generates TWO bfd sections | |
2588 | for the single program segment. The first has the length specified by | |
2589 | the file size of the segment, and the second has the length specified | |
2590 | by the difference between the two sizes. In effect, the segment is split | |
2591 | into it's initialized and uninitialized parts. | |
2592 | ||
2593 | */ | |
2594 | ||
b34976b6 | 2595 | bfd_boolean |
217aa764 AM |
2596 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2597 | Elf_Internal_Phdr *hdr, | |
2598 | int index, | |
2599 | const char *typename) | |
252b5132 RH |
2600 | { |
2601 | asection *newsect; | |
2602 | char *name; | |
2603 | char namebuf[64]; | |
d4c88bbb | 2604 | size_t len; |
252b5132 RH |
2605 | int split; |
2606 | ||
2607 | split = ((hdr->p_memsz > 0) | |
2608 | && (hdr->p_filesz > 0) | |
2609 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2610 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2611 | len = strlen (namebuf) + 1; |
217aa764 | 2612 | name = bfd_alloc (abfd, len); |
252b5132 | 2613 | if (!name) |
b34976b6 | 2614 | return FALSE; |
d4c88bbb | 2615 | memcpy (name, namebuf, len); |
252b5132 RH |
2616 | newsect = bfd_make_section (abfd, name); |
2617 | if (newsect == NULL) | |
b34976b6 | 2618 | return FALSE; |
252b5132 RH |
2619 | newsect->vma = hdr->p_vaddr; |
2620 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2621 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2622 | newsect->filepos = hdr->p_offset; |
2623 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2624 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2625 | if (hdr->p_type == PT_LOAD) |
2626 | { | |
2627 | newsect->flags |= SEC_ALLOC; | |
2628 | newsect->flags |= SEC_LOAD; | |
2629 | if (hdr->p_flags & PF_X) | |
2630 | { | |
2631 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2632 | may be data. */ |
252b5132 RH |
2633 | newsect->flags |= SEC_CODE; |
2634 | } | |
2635 | } | |
2636 | if (!(hdr->p_flags & PF_W)) | |
2637 | { | |
2638 | newsect->flags |= SEC_READONLY; | |
2639 | } | |
2640 | ||
2641 | if (split) | |
2642 | { | |
27ac83bf | 2643 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2644 | len = strlen (namebuf) + 1; |
217aa764 | 2645 | name = bfd_alloc (abfd, len); |
252b5132 | 2646 | if (!name) |
b34976b6 | 2647 | return FALSE; |
d4c88bbb | 2648 | memcpy (name, namebuf, len); |
252b5132 RH |
2649 | newsect = bfd_make_section (abfd, name); |
2650 | if (newsect == NULL) | |
b34976b6 | 2651 | return FALSE; |
252b5132 RH |
2652 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2653 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2654 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2655 | if (hdr->p_type == PT_LOAD) |
2656 | { | |
2657 | newsect->flags |= SEC_ALLOC; | |
2658 | if (hdr->p_flags & PF_X) | |
2659 | newsect->flags |= SEC_CODE; | |
2660 | } | |
2661 | if (!(hdr->p_flags & PF_W)) | |
2662 | newsect->flags |= SEC_READONLY; | |
2663 | } | |
2664 | ||
b34976b6 | 2665 | return TRUE; |
252b5132 RH |
2666 | } |
2667 | ||
b34976b6 | 2668 | bfd_boolean |
217aa764 | 2669 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2670 | { |
9c5bfbb7 | 2671 | const struct elf_backend_data *bed; |
20cfcaae NC |
2672 | |
2673 | switch (hdr->p_type) | |
2674 | { | |
2675 | case PT_NULL: | |
2676 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2677 | ||
2678 | case PT_LOAD: | |
2679 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2680 | ||
2681 | case PT_DYNAMIC: | |
2682 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2683 | ||
2684 | case PT_INTERP: | |
2685 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2686 | ||
2687 | case PT_NOTE: | |
2688 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2689 | return FALSE; |
217aa764 | 2690 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2691 | return FALSE; |
2692 | return TRUE; | |
20cfcaae NC |
2693 | |
2694 | case PT_SHLIB: | |
2695 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2696 | ||
2697 | case PT_PHDR: | |
2698 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2699 | ||
811072d8 RM |
2700 | case PT_GNU_EH_FRAME: |
2701 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2702 | "eh_frame_hdr"); | |
2703 | ||
9ee5e499 JJ |
2704 | case PT_GNU_STACK: |
2705 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2706 | ||
8c37241b JJ |
2707 | case PT_GNU_RELRO: |
2708 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2709 | ||
20cfcaae | 2710 | default: |
8c1acd09 | 2711 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2712 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2713 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2714 | } |
2715 | } | |
2716 | ||
23bc299b | 2717 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2718 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2719 | relocations; otherwise, we use REL relocations. */ |
2720 | ||
b34976b6 | 2721 | bfd_boolean |
217aa764 AM |
2722 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2723 | Elf_Internal_Shdr *rel_hdr, | |
2724 | asection *asect, | |
2725 | bfd_boolean use_rela_p) | |
23bc299b MM |
2726 | { |
2727 | char *name; | |
9c5bfbb7 | 2728 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2729 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2730 | |
dc810e39 | 2731 | name = bfd_alloc (abfd, amt); |
23bc299b | 2732 | if (name == NULL) |
b34976b6 | 2733 | return FALSE; |
23bc299b MM |
2734 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2735 | rel_hdr->sh_name = | |
2b0f7ef9 | 2736 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2737 | FALSE); |
23bc299b | 2738 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2739 | return FALSE; |
23bc299b MM |
2740 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2741 | rel_hdr->sh_entsize = (use_rela_p | |
2742 | ? bed->s->sizeof_rela | |
2743 | : bed->s->sizeof_rel); | |
45d6a902 | 2744 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2745 | rel_hdr->sh_flags = 0; |
2746 | rel_hdr->sh_addr = 0; | |
2747 | rel_hdr->sh_size = 0; | |
2748 | rel_hdr->sh_offset = 0; | |
2749 | ||
b34976b6 | 2750 | return TRUE; |
23bc299b MM |
2751 | } |
2752 | ||
252b5132 RH |
2753 | /* Set up an ELF internal section header for a section. */ |
2754 | ||
252b5132 | 2755 | static void |
217aa764 | 2756 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2757 | { |
9c5bfbb7 | 2758 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2759 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2760 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2761 | unsigned int sh_type; |
252b5132 RH |
2762 | |
2763 | if (*failedptr) | |
2764 | { | |
2765 | /* We already failed; just get out of the bfd_map_over_sections | |
2766 | loop. */ | |
2767 | return; | |
2768 | } | |
2769 | ||
2770 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2771 | ||
e57b5356 AM |
2772 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2773 | asect->name, FALSE); | |
2774 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2775 | { |
b34976b6 | 2776 | *failedptr = TRUE; |
252b5132 RH |
2777 | return; |
2778 | } | |
2779 | ||
a4d8e49b | 2780 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2781 | |
2782 | if ((asect->flags & SEC_ALLOC) != 0 | |
2783 | || asect->user_set_vma) | |
2784 | this_hdr->sh_addr = asect->vma; | |
2785 | else | |
2786 | this_hdr->sh_addr = 0; | |
2787 | ||
2788 | this_hdr->sh_offset = 0; | |
eea6121a | 2789 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2790 | this_hdr->sh_link = 0; |
2791 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2792 | /* The sh_entsize and sh_info fields may have been set already by | |
2793 | copy_private_section_data. */ | |
2794 | ||
2795 | this_hdr->bfd_section = asect; | |
2796 | this_hdr->contents = NULL; | |
2797 | ||
3cddba1e L |
2798 | /* If the section type is unspecified, we set it based on |
2799 | asect->flags. */ | |
2800 | if (this_hdr->sh_type == SHT_NULL) | |
2801 | { | |
45c5e9ed | 2802 | if ((asect->flags & SEC_GROUP) != 0) |
ccd2ec6a | 2803 | this_hdr->sh_type = SHT_GROUP; |
45c5e9ed | 2804 | else if ((asect->flags & SEC_ALLOC) != 0 |
1ea63fd2 AM |
2805 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2806 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
3cddba1e L |
2807 | this_hdr->sh_type = SHT_NOBITS; |
2808 | else | |
2809 | this_hdr->sh_type = SHT_PROGBITS; | |
2810 | } | |
2811 | ||
2f89ff8d | 2812 | switch (this_hdr->sh_type) |
252b5132 | 2813 | { |
2f89ff8d | 2814 | default: |
2f89ff8d L |
2815 | break; |
2816 | ||
2817 | case SHT_STRTAB: | |
2818 | case SHT_INIT_ARRAY: | |
2819 | case SHT_FINI_ARRAY: | |
2820 | case SHT_PREINIT_ARRAY: | |
2821 | case SHT_NOTE: | |
2822 | case SHT_NOBITS: | |
2823 | case SHT_PROGBITS: | |
2824 | break; | |
2825 | ||
2826 | case SHT_HASH: | |
c7ac6ff8 | 2827 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2828 | break; |
5de3bf90 | 2829 | |
2f89ff8d | 2830 | case SHT_DYNSYM: |
252b5132 | 2831 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2832 | break; |
2833 | ||
2834 | case SHT_DYNAMIC: | |
252b5132 | 2835 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2836 | break; |
2837 | ||
2838 | case SHT_RELA: | |
2839 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2840 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2841 | break; | |
2842 | ||
2843 | case SHT_REL: | |
2844 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2845 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2846 | break; | |
2847 | ||
2848 | case SHT_GNU_versym: | |
252b5132 | 2849 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2850 | break; |
2851 | ||
2852 | case SHT_GNU_verdef: | |
252b5132 RH |
2853 | this_hdr->sh_entsize = 0; |
2854 | /* objcopy or strip will copy over sh_info, but may not set | |
2855 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2856 | zero. */ | |
2857 | if (this_hdr->sh_info == 0) | |
2858 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2859 | else | |
2860 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2861 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2862 | break; |
2863 | ||
2864 | case SHT_GNU_verneed: | |
252b5132 RH |
2865 | this_hdr->sh_entsize = 0; |
2866 | /* objcopy or strip will copy over sh_info, but may not set | |
2867 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2868 | zero. */ | |
2869 | if (this_hdr->sh_info == 0) | |
2870 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2871 | else | |
2872 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2873 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2874 | break; |
2875 | ||
2876 | case SHT_GROUP: | |
1783205a | 2877 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2878 | break; |
fdc90cb4 JJ |
2879 | |
2880 | case SHT_GNU_HASH: | |
2881 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2882 | break; | |
dbb410c3 | 2883 | } |
252b5132 RH |
2884 | |
2885 | if ((asect->flags & SEC_ALLOC) != 0) | |
2886 | this_hdr->sh_flags |= SHF_ALLOC; | |
2887 | if ((asect->flags & SEC_READONLY) == 0) | |
2888 | this_hdr->sh_flags |= SHF_WRITE; | |
2889 | if ((asect->flags & SEC_CODE) != 0) | |
2890 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2891 | if ((asect->flags & SEC_MERGE) != 0) |
2892 | { | |
2893 | this_hdr->sh_flags |= SHF_MERGE; | |
2894 | this_hdr->sh_entsize = asect->entsize; | |
2895 | if ((asect->flags & SEC_STRINGS) != 0) | |
2896 | this_hdr->sh_flags |= SHF_STRINGS; | |
2897 | } | |
1126897b | 2898 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2899 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2900 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2901 | { |
2902 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2903 | if (asect->size == 0 |
2904 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2905 | { |
3a800eb9 | 2906 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2907 | |
704afa60 | 2908 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2909 | if (o != NULL) |
2910 | { | |
704afa60 | 2911 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2912 | if (this_hdr->sh_size != 0) |
2913 | this_hdr->sh_type = SHT_NOBITS; | |
2914 | } | |
704afa60 JJ |
2915 | } |
2916 | } | |
252b5132 RH |
2917 | |
2918 | /* Check for processor-specific section types. */ | |
0414f35b | 2919 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2920 | if (bed->elf_backend_fake_sections |
2921 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2922 | *failedptr = TRUE; |
252b5132 | 2923 | |
42bb2e33 | 2924 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2925 | { |
2926 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2927 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2928 | this_hdr->sh_type = sh_type; |
2929 | } | |
2930 | ||
252b5132 | 2931 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2932 | SHT_REL[A] section. If two relocation sections are required for |
2933 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2934 | create the other. */ |
23bc299b | 2935 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2936 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2937 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2938 | asect, |
68bfbfcc | 2939 | asect->use_rela_p)) |
b34976b6 | 2940 | *failedptr = TRUE; |
252b5132 RH |
2941 | } |
2942 | ||
dbb410c3 AM |
2943 | /* Fill in the contents of a SHT_GROUP section. */ |
2944 | ||
1126897b | 2945 | void |
217aa764 | 2946 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2947 | { |
217aa764 | 2948 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2949 | unsigned long symindx; |
9dce4196 | 2950 | asection *elt, *first; |
dbb410c3 | 2951 | unsigned char *loc; |
b34976b6 | 2952 | bfd_boolean gas; |
dbb410c3 | 2953 | |
7e4111ad L |
2954 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2955 | elfxx-ia64.c. */ | |
2956 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2957 | || *failedptr) |
2958 | return; | |
2959 | ||
1126897b AM |
2960 | symindx = 0; |
2961 | if (elf_group_id (sec) != NULL) | |
2962 | symindx = elf_group_id (sec)->udata.i; | |
2963 | ||
2964 | if (symindx == 0) | |
2965 | { | |
2966 | /* If called from the assembler, swap_out_syms will have set up | |
2967 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2968 | if (elf_section_syms (abfd) != NULL) | |
2969 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2970 | else | |
2971 | symindx = sec->target_index; | |
2972 | } | |
dbb410c3 AM |
2973 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2974 | ||
1126897b | 2975 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2976 | gas = TRUE; |
dbb410c3 AM |
2977 | if (sec->contents == NULL) |
2978 | { | |
b34976b6 | 2979 | gas = FALSE; |
eea6121a | 2980 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2981 | |
2982 | /* Arrange for the section to be written out. */ | |
2983 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2984 | if (sec->contents == NULL) |
2985 | { | |
b34976b6 | 2986 | *failedptr = TRUE; |
dbb410c3 AM |
2987 | return; |
2988 | } | |
2989 | } | |
2990 | ||
eea6121a | 2991 | loc = sec->contents + sec->size; |
dbb410c3 | 2992 | |
9dce4196 AM |
2993 | /* Get the pointer to the first section in the group that gas |
2994 | squirreled away here. objcopy arranges for this to be set to the | |
2995 | start of the input section group. */ | |
2996 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2997 | |
2998 | /* First element is a flag word. Rest of section is elf section | |
2999 | indices for all the sections of the group. Write them backwards | |
3000 | just to keep the group in the same order as given in .section | |
3001 | directives, not that it matters. */ | |
3002 | while (elt != NULL) | |
3003 | { | |
9dce4196 AM |
3004 | asection *s; |
3005 | unsigned int idx; | |
3006 | ||
dbb410c3 | 3007 | loc -= 4; |
9dce4196 AM |
3008 | s = elt; |
3009 | if (!gas) | |
3010 | s = s->output_section; | |
3011 | idx = 0; | |
3012 | if (s != NULL) | |
3013 | idx = elf_section_data (s)->this_idx; | |
3014 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 3015 | elt = elf_next_in_group (elt); |
9dce4196 AM |
3016 | if (elt == first) |
3017 | break; | |
dbb410c3 AM |
3018 | } |
3019 | ||
3d7f7666 | 3020 | if ((loc -= 4) != sec->contents) |
9dce4196 | 3021 | abort (); |
dbb410c3 | 3022 | |
9dce4196 | 3023 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
3024 | } |
3025 | ||
252b5132 RH |
3026 | /* Assign all ELF section numbers. The dummy first section is handled here |
3027 | too. The link/info pointers for the standard section types are filled | |
3028 | in here too, while we're at it. */ | |
3029 | ||
b34976b6 | 3030 | static bfd_boolean |
da9f89d4 | 3031 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3032 | { |
3033 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
3034 | asection *sec; | |
2b0f7ef9 | 3035 | unsigned int section_number, secn; |
252b5132 | 3036 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 3037 | struct bfd_elf_section_data *d; |
252b5132 RH |
3038 | |
3039 | section_number = 1; | |
3040 | ||
2b0f7ef9 JJ |
3041 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
3042 | ||
da9f89d4 L |
3043 | /* SHT_GROUP sections are in relocatable files only. */ |
3044 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 3045 | { |
da9f89d4 | 3046 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 3047 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 3048 | { |
5daa8fe7 | 3049 | d = elf_section_data (sec); |
da9f89d4 L |
3050 | |
3051 | if (d->this_hdr.sh_type == SHT_GROUP) | |
3052 | { | |
5daa8fe7 | 3053 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
3054 | { |
3055 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 3056 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 3057 | abfd->section_count--; |
da9f89d4 L |
3058 | } |
3059 | else | |
3060 | { | |
3061 | if (section_number == SHN_LORESERVE) | |
3062 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3063 | d->this_idx = section_number++; | |
3064 | } | |
3065 | } | |
47cc2cf5 PB |
3066 | } |
3067 | } | |
3068 | ||
3069 | for (sec = abfd->sections; sec; sec = sec->next) | |
3070 | { | |
3071 | d = elf_section_data (sec); | |
3072 | ||
3073 | if (d->this_hdr.sh_type != SHT_GROUP) | |
3074 | { | |
3075 | if (section_number == SHN_LORESERVE) | |
3076 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3077 | d->this_idx = section_number++; | |
3078 | } | |
2b0f7ef9 | 3079 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
3080 | if ((sec->flags & SEC_RELOC) == 0) |
3081 | d->rel_idx = 0; | |
3082 | else | |
2b0f7ef9 | 3083 | { |
9ad5cbcf AM |
3084 | if (section_number == SHN_LORESERVE) |
3085 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3086 | d->rel_idx = section_number++; |
3087 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
3088 | } | |
23bc299b MM |
3089 | |
3090 | if (d->rel_hdr2) | |
2b0f7ef9 | 3091 | { |
9ad5cbcf AM |
3092 | if (section_number == SHN_LORESERVE) |
3093 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3094 | d->rel_idx2 = section_number++; |
3095 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
3096 | } | |
23bc299b MM |
3097 | else |
3098 | d->rel_idx2 = 0; | |
252b5132 RH |
3099 | } |
3100 | ||
9ad5cbcf AM |
3101 | if (section_number == SHN_LORESERVE) |
3102 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3103 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 3104 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 3105 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
3106 | |
3107 | if (bfd_get_symcount (abfd) > 0) | |
3108 | { | |
9ad5cbcf AM |
3109 | if (section_number == SHN_LORESERVE) |
3110 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3111 | t->symtab_section = section_number++; |
2b0f7ef9 | 3112 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
3113 | if (section_number > SHN_LORESERVE - 2) |
3114 | { | |
3115 | if (section_number == SHN_LORESERVE) | |
3116 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3117 | t->symtab_shndx_section = section_number++; | |
3118 | t->symtab_shndx_hdr.sh_name | |
3119 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 3120 | ".symtab_shndx", FALSE); |
9ad5cbcf | 3121 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 3122 | return FALSE; |
9ad5cbcf AM |
3123 | } |
3124 | if (section_number == SHN_LORESERVE) | |
3125 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3126 | t->strtab_section = section_number++; |
2b0f7ef9 | 3127 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3128 | } |
3129 | ||
2b0f7ef9 JJ |
3130 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
3131 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
3132 | |
3133 | elf_numsections (abfd) = section_number; | |
252b5132 | 3134 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3135 | if (section_number > SHN_LORESERVE) |
3136 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3137 | |
3138 | /* Set up the list of section header pointers, in agreement with the | |
3139 | indices. */ | |
d0fb9a8d | 3140 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 3141 | if (i_shdrp == NULL) |
b34976b6 | 3142 | return FALSE; |
252b5132 | 3143 | |
d0fb9a8d | 3144 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3145 | if (i_shdrp[0] == NULL) |
3146 | { | |
3147 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3148 | return FALSE; |
252b5132 | 3149 | } |
252b5132 RH |
3150 | |
3151 | elf_elfsections (abfd) = i_shdrp; | |
3152 | ||
3153 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3154 | if (bfd_get_symcount (abfd) > 0) | |
3155 | { | |
3156 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3157 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3158 | { | |
3159 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3160 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3161 | } | |
252b5132 RH |
3162 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3163 | t->symtab_hdr.sh_link = t->strtab_section; | |
3164 | } | |
38ce5b11 | 3165 | |
252b5132 RH |
3166 | for (sec = abfd->sections; sec; sec = sec->next) |
3167 | { | |
3168 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3169 | asection *s; | |
3170 | const char *name; | |
3171 | ||
3172 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3173 | if (d->rel_idx != 0) | |
3174 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3175 | if (d->rel_idx2 != 0) |
3176 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3177 | |
3178 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3179 | ||
3180 | /* sh_link of a reloc section is the section index of the symbol | |
3181 | table. sh_info is the section index of the section to which | |
3182 | the relocation entries apply. */ | |
3183 | if (d->rel_idx != 0) | |
3184 | { | |
3185 | d->rel_hdr.sh_link = t->symtab_section; | |
3186 | d->rel_hdr.sh_info = d->this_idx; | |
3187 | } | |
23bc299b MM |
3188 | if (d->rel_idx2 != 0) |
3189 | { | |
3190 | d->rel_hdr2->sh_link = t->symtab_section; | |
3191 | d->rel_hdr2->sh_info = d->this_idx; | |
3192 | } | |
252b5132 | 3193 | |
38ce5b11 L |
3194 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3195 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3196 | { | |
3197 | s = elf_linked_to_section (sec); | |
3198 | if (s) | |
38ce5b11 | 3199 | { |
f2876037 | 3200 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3201 | if (link_info != NULL) |
38ce5b11 | 3202 | { |
f2876037 | 3203 | /* Check discarded linkonce section. */ |
ccd2ec6a | 3204 | if (elf_discarded_section (s)) |
38ce5b11 | 3205 | { |
ccd2ec6a L |
3206 | asection *kept; |
3207 | (*_bfd_error_handler) | |
3208 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3209 | abfd, d->this_hdr.bfd_section, | |
3210 | s, s->owner); | |
3211 | /* Point to the kept section if it has the same | |
3212 | size as the discarded one. */ | |
c0f00686 | 3213 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 3214 | if (kept == NULL) |
185d09ad | 3215 | { |
ccd2ec6a L |
3216 | bfd_set_error (bfd_error_bad_value); |
3217 | return FALSE; | |
185d09ad | 3218 | } |
ccd2ec6a | 3219 | s = kept; |
38ce5b11 | 3220 | } |
e424ecc8 | 3221 | |
ccd2ec6a L |
3222 | s = s->output_section; |
3223 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3224 | } |
f2876037 L |
3225 | else |
3226 | { | |
3227 | /* Handle objcopy. */ | |
3228 | if (s->output_section == NULL) | |
3229 | { | |
3230 | (*_bfd_error_handler) | |
3231 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3232 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3233 | bfd_set_error (bfd_error_bad_value); | |
3234 | return FALSE; | |
3235 | } | |
3236 | s = s->output_section; | |
3237 | } | |
ccd2ec6a L |
3238 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3239 | } | |
3240 | else | |
3241 | { | |
3242 | /* PR 290: | |
3243 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3244 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3245 | sh_info fields. Hence we could get the situation | |
3246 | where s is NULL. */ | |
3247 | const struct elf_backend_data *bed | |
3248 | = get_elf_backend_data (abfd); | |
3249 | if (bed->link_order_error_handler) | |
3250 | bed->link_order_error_handler | |
3251 | (_("%B: warning: sh_link not set for section `%A'"), | |
3252 | abfd, sec); | |
38ce5b11 L |
3253 | } |
3254 | } | |
3255 | ||
252b5132 RH |
3256 | switch (d->this_hdr.sh_type) |
3257 | { | |
3258 | case SHT_REL: | |
3259 | case SHT_RELA: | |
3260 | /* A reloc section which we are treating as a normal BFD | |
3261 | section. sh_link is the section index of the symbol | |
3262 | table. sh_info is the section index of the section to | |
3263 | which the relocation entries apply. We assume that an | |
3264 | allocated reloc section uses the dynamic symbol table. | |
3265 | FIXME: How can we be sure? */ | |
3266 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3267 | if (s != NULL) | |
3268 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3269 | ||
3270 | /* We look up the section the relocs apply to by name. */ | |
3271 | name = sec->name; | |
3272 | if (d->this_hdr.sh_type == SHT_REL) | |
3273 | name += 4; | |
3274 | else | |
3275 | name += 5; | |
3276 | s = bfd_get_section_by_name (abfd, name); | |
3277 | if (s != NULL) | |
3278 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3279 | break; | |
3280 | ||
3281 | case SHT_STRTAB: | |
3282 | /* We assume that a section named .stab*str is a stabs | |
3283 | string section. We look for a section with the same name | |
3284 | but without the trailing ``str'', and set its sh_link | |
3285 | field to point to this section. */ | |
0112cd26 | 3286 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
3287 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
3288 | { | |
3289 | size_t len; | |
3290 | char *alc; | |
3291 | ||
3292 | len = strlen (sec->name); | |
217aa764 | 3293 | alc = bfd_malloc (len - 2); |
252b5132 | 3294 | if (alc == NULL) |
b34976b6 | 3295 | return FALSE; |
d4c88bbb | 3296 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3297 | alc[len - 3] = '\0'; |
3298 | s = bfd_get_section_by_name (abfd, alc); | |
3299 | free (alc); | |
3300 | if (s != NULL) | |
3301 | { | |
3302 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3303 | ||
3304 | /* This is a .stab section. */ | |
0594c12d AM |
3305 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3306 | elf_section_data (s)->this_hdr.sh_entsize | |
3307 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3308 | } |
3309 | } | |
3310 | break; | |
3311 | ||
3312 | case SHT_DYNAMIC: | |
3313 | case SHT_DYNSYM: | |
3314 | case SHT_GNU_verneed: | |
3315 | case SHT_GNU_verdef: | |
3316 | /* sh_link is the section header index of the string table | |
3317 | used for the dynamic entries, or the symbol table, or the | |
3318 | version strings. */ | |
3319 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3320 | if (s != NULL) | |
3321 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3322 | break; | |
3323 | ||
7f1204bb JJ |
3324 | case SHT_GNU_LIBLIST: |
3325 | /* sh_link is the section header index of the prelink library | |
3326 | list | |
3327 | used for the dynamic entries, or the symbol table, or the | |
3328 | version strings. */ | |
3329 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3330 | ? ".dynstr" : ".gnu.libstr"); | |
3331 | if (s != NULL) | |
3332 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3333 | break; | |
3334 | ||
252b5132 | 3335 | case SHT_HASH: |
fdc90cb4 | 3336 | case SHT_GNU_HASH: |
252b5132 RH |
3337 | case SHT_GNU_versym: |
3338 | /* sh_link is the section header index of the symbol table | |
3339 | this hash table or version table is for. */ | |
3340 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3341 | if (s != NULL) | |
3342 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3343 | break; | |
dbb410c3 AM |
3344 | |
3345 | case SHT_GROUP: | |
3346 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3347 | } |
3348 | } | |
3349 | ||
2b0f7ef9 | 3350 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3351 | if (i_shdrp[secn] == NULL) |
3352 | i_shdrp[secn] = i_shdrp[0]; | |
3353 | else | |
3354 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3355 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3356 | return TRUE; |
252b5132 RH |
3357 | } |
3358 | ||
3359 | /* Map symbol from it's internal number to the external number, moving | |
3360 | all local symbols to be at the head of the list. */ | |
3361 | ||
5372391b | 3362 | static bfd_boolean |
217aa764 | 3363 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3364 | { |
3365 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3366 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3367 | if (bed->elf_backend_sym_is_global) |
3368 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3369 | |
3370 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3371 | || bfd_is_und_section (bfd_get_section (sym)) | |
3372 | || bfd_is_com_section (bfd_get_section (sym))); | |
3373 | } | |
3374 | ||
5372391b AM |
3375 | /* Don't output section symbols for sections that are not going to be |
3376 | output. Also, don't output section symbols for reloc and other | |
3377 | special sections. */ | |
3378 | ||
3379 | static bfd_boolean | |
3380 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3381 | { | |
3382 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3383 | && (sym->value != 0 | |
3384 | || (sym->section->owner != abfd | |
3385 | && (sym->section->output_section->owner != abfd | |
3386 | || sym->section->output_offset != 0)))); | |
3387 | } | |
3388 | ||
b34976b6 | 3389 | static bfd_boolean |
217aa764 | 3390 | elf_map_symbols (bfd *abfd) |
252b5132 | 3391 | { |
dc810e39 | 3392 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3393 | asymbol **syms = bfd_get_outsymbols (abfd); |
3394 | asymbol **sect_syms; | |
dc810e39 AM |
3395 | unsigned int num_locals = 0; |
3396 | unsigned int num_globals = 0; | |
3397 | unsigned int num_locals2 = 0; | |
3398 | unsigned int num_globals2 = 0; | |
252b5132 | 3399 | int max_index = 0; |
dc810e39 | 3400 | unsigned int idx; |
252b5132 RH |
3401 | asection *asect; |
3402 | asymbol **new_syms; | |
252b5132 RH |
3403 | |
3404 | #ifdef DEBUG | |
3405 | fprintf (stderr, "elf_map_symbols\n"); | |
3406 | fflush (stderr); | |
3407 | #endif | |
3408 | ||
252b5132 RH |
3409 | for (asect = abfd->sections; asect; asect = asect->next) |
3410 | { | |
3411 | if (max_index < asect->index) | |
3412 | max_index = asect->index; | |
3413 | } | |
3414 | ||
3415 | max_index++; | |
d0fb9a8d | 3416 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3417 | if (sect_syms == NULL) |
b34976b6 | 3418 | return FALSE; |
252b5132 | 3419 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3420 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3421 | |
079e9a2f AM |
3422 | /* Init sect_syms entries for any section symbols we have already |
3423 | decided to output. */ | |
252b5132 RH |
3424 | for (idx = 0; idx < symcount; idx++) |
3425 | { | |
dc810e39 | 3426 | asymbol *sym = syms[idx]; |
c044fabd | 3427 | |
252b5132 | 3428 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3429 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3430 | { |
5372391b | 3431 | asection *sec = sym->section; |
252b5132 | 3432 | |
5372391b AM |
3433 | if (sec->owner != abfd) |
3434 | sec = sec->output_section; | |
252b5132 | 3435 | |
5372391b | 3436 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3437 | } |
3438 | } | |
3439 | ||
252b5132 RH |
3440 | /* Classify all of the symbols. */ |
3441 | for (idx = 0; idx < symcount; idx++) | |
3442 | { | |
5372391b AM |
3443 | if (ignore_section_sym (abfd, syms[idx])) |
3444 | continue; | |
252b5132 RH |
3445 | if (!sym_is_global (abfd, syms[idx])) |
3446 | num_locals++; | |
3447 | else | |
3448 | num_globals++; | |
3449 | } | |
079e9a2f | 3450 | |
5372391b | 3451 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3452 | sections will already have a section symbol in outsymbols, but |
3453 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3454 | at least in that case. */ | |
252b5132 RH |
3455 | for (asect = abfd->sections; asect; asect = asect->next) |
3456 | { | |
079e9a2f | 3457 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3458 | { |
079e9a2f | 3459 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3460 | num_locals++; |
3461 | else | |
3462 | num_globals++; | |
252b5132 RH |
3463 | } |
3464 | } | |
3465 | ||
3466 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3467 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3468 | |
252b5132 | 3469 | if (new_syms == NULL) |
b34976b6 | 3470 | return FALSE; |
252b5132 RH |
3471 | |
3472 | for (idx = 0; idx < symcount; idx++) | |
3473 | { | |
3474 | asymbol *sym = syms[idx]; | |
dc810e39 | 3475 | unsigned int i; |
252b5132 | 3476 | |
5372391b AM |
3477 | if (ignore_section_sym (abfd, sym)) |
3478 | continue; | |
252b5132 RH |
3479 | if (!sym_is_global (abfd, sym)) |
3480 | i = num_locals2++; | |
3481 | else | |
3482 | i = num_locals + num_globals2++; | |
3483 | new_syms[i] = sym; | |
3484 | sym->udata.i = i + 1; | |
3485 | } | |
3486 | for (asect = abfd->sections; asect; asect = asect->next) | |
3487 | { | |
079e9a2f | 3488 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3489 | { |
079e9a2f | 3490 | asymbol *sym = asect->symbol; |
dc810e39 | 3491 | unsigned int i; |
252b5132 | 3492 | |
079e9a2f | 3493 | sect_syms[asect->index] = sym; |
252b5132 RH |
3494 | if (!sym_is_global (abfd, sym)) |
3495 | i = num_locals2++; | |
3496 | else | |
3497 | i = num_locals + num_globals2++; | |
3498 | new_syms[i] = sym; | |
3499 | sym->udata.i = i + 1; | |
3500 | } | |
3501 | } | |
3502 | ||
3503 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3504 | ||
3505 | elf_num_locals (abfd) = num_locals; | |
3506 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3507 | return TRUE; |
252b5132 RH |
3508 | } |
3509 | ||
3510 | /* Align to the maximum file alignment that could be required for any | |
3511 | ELF data structure. */ | |
3512 | ||
268b6b39 | 3513 | static inline file_ptr |
217aa764 | 3514 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3515 | { |
3516 | return (off + align - 1) & ~(align - 1); | |
3517 | } | |
3518 | ||
3519 | /* Assign a file position to a section, optionally aligning to the | |
3520 | required section alignment. */ | |
3521 | ||
217aa764 AM |
3522 | file_ptr |
3523 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3524 | file_ptr offset, | |
3525 | bfd_boolean align) | |
252b5132 RH |
3526 | { |
3527 | if (align) | |
3528 | { | |
3529 | unsigned int al; | |
3530 | ||
3531 | al = i_shdrp->sh_addralign; | |
3532 | if (al > 1) | |
3533 | offset = BFD_ALIGN (offset, al); | |
3534 | } | |
3535 | i_shdrp->sh_offset = offset; | |
3536 | if (i_shdrp->bfd_section != NULL) | |
3537 | i_shdrp->bfd_section->filepos = offset; | |
3538 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3539 | offset += i_shdrp->sh_size; | |
3540 | return offset; | |
3541 | } | |
3542 | ||
3543 | /* Compute the file positions we are going to put the sections at, and | |
3544 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3545 | is not NULL, this is being called by the ELF backend linker. */ | |
3546 | ||
b34976b6 | 3547 | bfd_boolean |
217aa764 AM |
3548 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3549 | struct bfd_link_info *link_info) | |
252b5132 | 3550 | { |
9c5bfbb7 | 3551 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3552 | bfd_boolean failed; |
4b6c0f2f | 3553 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3554 | Elf_Internal_Shdr *shstrtab_hdr; |
3555 | ||
3556 | if (abfd->output_has_begun) | |
b34976b6 | 3557 | return TRUE; |
252b5132 RH |
3558 | |
3559 | /* Do any elf backend specific processing first. */ | |
3560 | if (bed->elf_backend_begin_write_processing) | |
3561 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3562 | ||
3563 | if (! prep_headers (abfd)) | |
b34976b6 | 3564 | return FALSE; |
252b5132 | 3565 | |
e6c51ed4 NC |
3566 | /* Post process the headers if necessary. */ |
3567 | if (bed->elf_backend_post_process_headers) | |
3568 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3569 | ||
b34976b6 | 3570 | failed = FALSE; |
252b5132 RH |
3571 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3572 | if (failed) | |
b34976b6 | 3573 | return FALSE; |
252b5132 | 3574 | |
da9f89d4 | 3575 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3576 | return FALSE; |
252b5132 RH |
3577 | |
3578 | /* The backend linker builds symbol table information itself. */ | |
3579 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3580 | { | |
3581 | /* Non-zero if doing a relocatable link. */ | |
3582 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3583 | ||
3584 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3585 | return FALSE; |
252b5132 RH |
3586 | } |
3587 | ||
1126897b | 3588 | if (link_info == NULL) |
dbb410c3 | 3589 | { |
1126897b | 3590 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3591 | if (failed) |
b34976b6 | 3592 | return FALSE; |
dbb410c3 AM |
3593 | } |
3594 | ||
252b5132 RH |
3595 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3596 | /* sh_name was set in prep_headers. */ | |
3597 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3598 | shstrtab_hdr->sh_flags = 0; | |
3599 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3600 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3601 | shstrtab_hdr->sh_entsize = 0; |
3602 | shstrtab_hdr->sh_link = 0; | |
3603 | shstrtab_hdr->sh_info = 0; | |
3604 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3605 | shstrtab_hdr->sh_addralign = 1; | |
3606 | ||
c84fca4d | 3607 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3608 | return FALSE; |
252b5132 RH |
3609 | |
3610 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3611 | { | |
3612 | file_ptr off; | |
3613 | Elf_Internal_Shdr *hdr; | |
3614 | ||
3615 | off = elf_tdata (abfd)->next_file_pos; | |
3616 | ||
3617 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3618 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3619 | |
9ad5cbcf AM |
3620 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3621 | if (hdr->sh_size != 0) | |
b34976b6 | 3622 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3623 | |
252b5132 | 3624 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3625 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3626 | |
3627 | elf_tdata (abfd)->next_file_pos = off; | |
3628 | ||
3629 | /* Now that we know where the .strtab section goes, write it | |
3630 | out. */ | |
3631 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3632 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3633 | return FALSE; |
252b5132 RH |
3634 | _bfd_stringtab_free (strtab); |
3635 | } | |
3636 | ||
b34976b6 | 3637 | abfd->output_has_begun = TRUE; |
252b5132 | 3638 | |
b34976b6 | 3639 | return TRUE; |
252b5132 RH |
3640 | } |
3641 | ||
8ded5a0f AM |
3642 | /* Make an initial estimate of the size of the program header. If we |
3643 | get the number wrong here, we'll redo section placement. */ | |
3644 | ||
3645 | static bfd_size_type | |
3646 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3647 | { | |
3648 | size_t segs; | |
3649 | asection *s; | |
3650 | const struct elf_backend_data *bed; | |
3651 | ||
3652 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3653 | and one for data. */ | |
3654 | segs = 2; | |
3655 | ||
3656 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3657 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3658 | { | |
3659 | /* If we have a loadable interpreter section, we need a | |
3660 | PT_INTERP segment. In this case, assume we also need a | |
3661 | PT_PHDR segment, although that may not be true for all | |
3662 | targets. */ | |
3663 | segs += 2; | |
3664 | } | |
3665 | ||
3666 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3667 | { | |
3668 | /* We need a PT_DYNAMIC segment. */ | |
3669 | ++segs; | |
c9df6640 L |
3670 | |
3671 | if (elf_tdata (abfd)->relro) | |
3672 | { | |
3673 | /* We need a PT_GNU_RELRO segment only when there is a | |
3674 | PT_DYNAMIC segment. */ | |
3675 | ++segs; | |
3676 | } | |
8ded5a0f AM |
3677 | } |
3678 | ||
3679 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3680 | { | |
3681 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3682 | ++segs; | |
3683 | } | |
3684 | ||
3685 | if (elf_tdata (abfd)->stack_flags) | |
3686 | { | |
3687 | /* We need a PT_GNU_STACK segment. */ | |
3688 | ++segs; | |
3689 | } | |
3690 | ||
8ded5a0f AM |
3691 | for (s = abfd->sections; s != NULL; s = s->next) |
3692 | { | |
3693 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3694 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3695 | { |
3696 | /* We need a PT_NOTE segment. */ | |
3697 | ++segs; | |
3698 | } | |
3699 | } | |
3700 | ||
3701 | for (s = abfd->sections; s != NULL; s = s->next) | |
3702 | { | |
3703 | if (s->flags & SEC_THREAD_LOCAL) | |
3704 | { | |
3705 | /* We need a PT_TLS segment. */ | |
3706 | ++segs; | |
3707 | break; | |
3708 | } | |
3709 | } | |
3710 | ||
3711 | /* Let the backend count up any program headers it might need. */ | |
3712 | bed = get_elf_backend_data (abfd); | |
3713 | if (bed->elf_backend_additional_program_headers) | |
3714 | { | |
3715 | int a; | |
3716 | ||
3717 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3718 | if (a == -1) | |
3719 | abort (); | |
3720 | segs += a; | |
3721 | } | |
3722 | ||
3723 | return segs * bed->s->sizeof_phdr; | |
3724 | } | |
3725 | ||
252b5132 RH |
3726 | /* Create a mapping from a set of sections to a program segment. */ |
3727 | ||
217aa764 AM |
3728 | static struct elf_segment_map * |
3729 | make_mapping (bfd *abfd, | |
3730 | asection **sections, | |
3731 | unsigned int from, | |
3732 | unsigned int to, | |
3733 | bfd_boolean phdr) | |
252b5132 RH |
3734 | { |
3735 | struct elf_segment_map *m; | |
3736 | unsigned int i; | |
3737 | asection **hdrpp; | |
dc810e39 | 3738 | bfd_size_type amt; |
252b5132 | 3739 | |
dc810e39 AM |
3740 | amt = sizeof (struct elf_segment_map); |
3741 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3742 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3743 | if (m == NULL) |
3744 | return NULL; | |
3745 | m->next = NULL; | |
3746 | m->p_type = PT_LOAD; | |
3747 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3748 | m->sections[i - from] = *hdrpp; | |
3749 | m->count = to - from; | |
3750 | ||
3751 | if (from == 0 && phdr) | |
3752 | { | |
3753 | /* Include the headers in the first PT_LOAD segment. */ | |
3754 | m->includes_filehdr = 1; | |
3755 | m->includes_phdrs = 1; | |
3756 | } | |
3757 | ||
3758 | return m; | |
3759 | } | |
3760 | ||
229fcec5 MM |
3761 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3762 | on failure. */ | |
3763 | ||
3764 | struct elf_segment_map * | |
3765 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3766 | { | |
3767 | struct elf_segment_map *m; | |
3768 | ||
3769 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3770 | if (m == NULL) | |
3771 | return NULL; | |
3772 | m->next = NULL; | |
3773 | m->p_type = PT_DYNAMIC; | |
3774 | m->count = 1; | |
3775 | m->sections[0] = dynsec; | |
3776 | ||
3777 | return m; | |
3778 | } | |
3779 | ||
8ded5a0f | 3780 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3781 | |
b34976b6 | 3782 | static bfd_boolean |
8ded5a0f | 3783 | elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3784 | { |
252e386e | 3785 | struct elf_segment_map **m; |
8ded5a0f | 3786 | const struct elf_backend_data *bed; |
252b5132 | 3787 | |
8ded5a0f AM |
3788 | /* The placement algorithm assumes that non allocated sections are |
3789 | not in PT_LOAD segments. We ensure this here by removing such | |
3790 | sections from the segment map. We also remove excluded | |
252e386e AM |
3791 | sections. Finally, any PT_LOAD segment without sections is |
3792 | removed. */ | |
3793 | m = &elf_tdata (abfd)->segment_map; | |
3794 | while (*m) | |
8ded5a0f AM |
3795 | { |
3796 | unsigned int i, new_count; | |
252b5132 | 3797 | |
252e386e | 3798 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3799 | { |
252e386e AM |
3800 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3801 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3802 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3803 | { |
252e386e AM |
3804 | (*m)->sections[new_count] = (*m)->sections[i]; |
3805 | new_count++; | |
8ded5a0f AM |
3806 | } |
3807 | } | |
252e386e | 3808 | (*m)->count = new_count; |
252b5132 | 3809 | |
252e386e AM |
3810 | if ((*m)->p_type == PT_LOAD && (*m)->count == 0) |
3811 | *m = (*m)->next; | |
3812 | else | |
3813 | m = &(*m)->next; | |
8ded5a0f | 3814 | } |
252b5132 | 3815 | |
8ded5a0f AM |
3816 | bed = get_elf_backend_data (abfd); |
3817 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3818 | { |
252e386e | 3819 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3820 | return FALSE; |
252b5132 | 3821 | } |
252b5132 | 3822 | |
8ded5a0f AM |
3823 | return TRUE; |
3824 | } | |
252b5132 | 3825 | |
8ded5a0f | 3826 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3827 | |
8ded5a0f AM |
3828 | bfd_boolean |
3829 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3830 | { | |
3831 | unsigned int count; | |
3832 | struct elf_segment_map *m; | |
3833 | asection **sections = NULL; | |
3834 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 3835 | |
8ded5a0f AM |
3836 | if (elf_tdata (abfd)->segment_map == NULL |
3837 | && bfd_count_sections (abfd) != 0) | |
252b5132 | 3838 | { |
8ded5a0f AM |
3839 | asection *s; |
3840 | unsigned int i; | |
3841 | struct elf_segment_map *mfirst; | |
3842 | struct elf_segment_map **pm; | |
3843 | asection *last_hdr; | |
3844 | bfd_vma last_size; | |
3845 | unsigned int phdr_index; | |
3846 | bfd_vma maxpagesize; | |
3847 | asection **hdrpp; | |
3848 | bfd_boolean phdr_in_segment = TRUE; | |
3849 | bfd_boolean writable; | |
3850 | int tls_count = 0; | |
3851 | asection *first_tls = NULL; | |
3852 | asection *dynsec, *eh_frame_hdr; | |
3853 | bfd_size_type amt; | |
252b5132 | 3854 | |
8ded5a0f | 3855 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3856 | |
8ded5a0f AM |
3857 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3858 | if (sections == NULL) | |
252b5132 | 3859 | goto error_return; |
252b5132 | 3860 | |
8ded5a0f AM |
3861 | i = 0; |
3862 | for (s = abfd->sections; s != NULL; s = s->next) | |
3863 | { | |
3864 | if ((s->flags & SEC_ALLOC) != 0) | |
3865 | { | |
3866 | sections[i] = s; | |
3867 | ++i; | |
3868 | } | |
3869 | } | |
3870 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3871 | count = i; | |
252b5132 | 3872 | |
8ded5a0f | 3873 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3874 | |
8ded5a0f | 3875 | /* Build the mapping. */ |
252b5132 | 3876 | |
8ded5a0f AM |
3877 | mfirst = NULL; |
3878 | pm = &mfirst; | |
252b5132 | 3879 | |
8ded5a0f AM |
3880 | /* If we have a .interp section, then create a PT_PHDR segment for |
3881 | the program headers and a PT_INTERP segment for the .interp | |
3882 | section. */ | |
3883 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3884 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3885 | { | |
3886 | amt = sizeof (struct elf_segment_map); | |
3887 | m = bfd_zalloc (abfd, amt); | |
3888 | if (m == NULL) | |
3889 | goto error_return; | |
3890 | m->next = NULL; | |
3891 | m->p_type = PT_PHDR; | |
3892 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3893 | m->p_flags = PF_R | PF_X; | |
3894 | m->p_flags_valid = 1; | |
3895 | m->includes_phdrs = 1; | |
252b5132 | 3896 | |
8ded5a0f AM |
3897 | *pm = m; |
3898 | pm = &m->next; | |
252b5132 | 3899 | |
8ded5a0f AM |
3900 | amt = sizeof (struct elf_segment_map); |
3901 | m = bfd_zalloc (abfd, amt); | |
3902 | if (m == NULL) | |
3903 | goto error_return; | |
3904 | m->next = NULL; | |
3905 | m->p_type = PT_INTERP; | |
3906 | m->count = 1; | |
3907 | m->sections[0] = s; | |
3908 | ||
3909 | *pm = m; | |
3910 | pm = &m->next; | |
252b5132 | 3911 | } |
8ded5a0f AM |
3912 | |
3913 | /* Look through the sections. We put sections in the same program | |
3914 | segment when the start of the second section can be placed within | |
3915 | a few bytes of the end of the first section. */ | |
3916 | last_hdr = NULL; | |
3917 | last_size = 0; | |
3918 | phdr_index = 0; | |
3919 | maxpagesize = bed->maxpagesize; | |
3920 | writable = FALSE; | |
3921 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3922 | if (dynsec != NULL | |
3923 | && (dynsec->flags & SEC_LOAD) == 0) | |
3924 | dynsec = NULL; | |
3925 | ||
3926 | /* Deal with -Ttext or something similar such that the first section | |
3927 | is not adjacent to the program headers. This is an | |
3928 | approximation, since at this point we don't know exactly how many | |
3929 | program headers we will need. */ | |
3930 | if (count > 0) | |
252b5132 | 3931 | { |
8ded5a0f AM |
3932 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3933 | ||
62d7a5f6 | 3934 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3935 | phdr_size = get_program_header_size (abfd, info); |
3936 | if ((abfd->flags & D_PAGED) == 0 | |
3937 | || sections[0]->lma < phdr_size | |
3938 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3939 | phdr_in_segment = FALSE; | |
252b5132 RH |
3940 | } |
3941 | ||
8ded5a0f | 3942 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3943 | { |
8ded5a0f AM |
3944 | asection *hdr; |
3945 | bfd_boolean new_segment; | |
3946 | ||
3947 | hdr = *hdrpp; | |
3948 | ||
3949 | /* See if this section and the last one will fit in the same | |
3950 | segment. */ | |
3951 | ||
3952 | if (last_hdr == NULL) | |
3953 | { | |
3954 | /* If we don't have a segment yet, then we don't need a new | |
3955 | one (we build the last one after this loop). */ | |
3956 | new_segment = FALSE; | |
3957 | } | |
3958 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3959 | { | |
3960 | /* If this section has a different relation between the | |
3961 | virtual address and the load address, then we need a new | |
3962 | segment. */ | |
3963 | new_segment = TRUE; | |
3964 | } | |
3965 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3966 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3967 | { | |
3968 | /* If putting this section in this segment would force us to | |
3969 | skip a page in the segment, then we need a new segment. */ | |
3970 | new_segment = TRUE; | |
3971 | } | |
3972 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3973 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3974 | { | |
3975 | /* We don't want to put a loadable section after a | |
3976 | nonloadable section in the same segment. | |
3977 | Consider .tbss sections as loadable for this purpose. */ | |
3978 | new_segment = TRUE; | |
3979 | } | |
3980 | else if ((abfd->flags & D_PAGED) == 0) | |
3981 | { | |
3982 | /* If the file is not demand paged, which means that we | |
3983 | don't require the sections to be correctly aligned in the | |
3984 | file, then there is no other reason for a new segment. */ | |
3985 | new_segment = FALSE; | |
3986 | } | |
3987 | else if (! writable | |
3988 | && (hdr->flags & SEC_READONLY) == 0 | |
3989 | && (((last_hdr->lma + last_size - 1) | |
3990 | & ~(maxpagesize - 1)) | |
3991 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3992 | { | |
3993 | /* We don't want to put a writable section in a read only | |
3994 | segment, unless they are on the same page in memory | |
3995 | anyhow. We already know that the last section does not | |
3996 | bring us past the current section on the page, so the | |
3997 | only case in which the new section is not on the same | |
3998 | page as the previous section is when the previous section | |
3999 | ends precisely on a page boundary. */ | |
4000 | new_segment = TRUE; | |
4001 | } | |
4002 | else | |
4003 | { | |
4004 | /* Otherwise, we can use the same segment. */ | |
4005 | new_segment = FALSE; | |
4006 | } | |
4007 | ||
2889e75b NC |
4008 | /* Allow interested parties a chance to override our decision. */ |
4009 | if (last_hdr && info->callbacks->override_segment_assignment) | |
4010 | new_segment = info->callbacks->override_segment_assignment (info, abfd, hdr, last_hdr, new_segment); | |
4011 | ||
8ded5a0f AM |
4012 | if (! new_segment) |
4013 | { | |
4014 | if ((hdr->flags & SEC_READONLY) == 0) | |
4015 | writable = TRUE; | |
4016 | last_hdr = hdr; | |
4017 | /* .tbss sections effectively have zero size. */ | |
4018 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
4019 | != SEC_THREAD_LOCAL) | |
4020 | last_size = hdr->size; | |
4021 | else | |
4022 | last_size = 0; | |
4023 | continue; | |
4024 | } | |
4025 | ||
4026 | /* We need a new program segment. We must create a new program | |
4027 | header holding all the sections from phdr_index until hdr. */ | |
4028 | ||
4029 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4030 | if (m == NULL) | |
4031 | goto error_return; | |
4032 | ||
4033 | *pm = m; | |
4034 | pm = &m->next; | |
4035 | ||
252b5132 | 4036 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 4037 | writable = TRUE; |
8ded5a0f AM |
4038 | else |
4039 | writable = FALSE; | |
4040 | ||
baaff79e JJ |
4041 | last_hdr = hdr; |
4042 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 4043 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 4044 | last_size = hdr->size; |
baaff79e JJ |
4045 | else |
4046 | last_size = 0; | |
8ded5a0f AM |
4047 | phdr_index = i; |
4048 | phdr_in_segment = FALSE; | |
252b5132 RH |
4049 | } |
4050 | ||
8ded5a0f AM |
4051 | /* Create a final PT_LOAD program segment. */ |
4052 | if (last_hdr != NULL) | |
4053 | { | |
4054 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
4055 | if (m == NULL) | |
4056 | goto error_return; | |
252b5132 | 4057 | |
8ded5a0f AM |
4058 | *pm = m; |
4059 | pm = &m->next; | |
4060 | } | |
252b5132 | 4061 | |
8ded5a0f AM |
4062 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
4063 | if (dynsec != NULL) | |
4064 | { | |
4065 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
4066 | if (m == NULL) | |
4067 | goto error_return; | |
4068 | *pm = m; | |
4069 | pm = &m->next; | |
4070 | } | |
252b5132 | 4071 | |
8ded5a0f AM |
4072 | /* For each loadable .note section, add a PT_NOTE segment. We don't |
4073 | use bfd_get_section_by_name, because if we link together | |
4074 | nonloadable .note sections and loadable .note sections, we will | |
4075 | generate two .note sections in the output file. FIXME: Using | |
4076 | names for section types is bogus anyhow. */ | |
4077 | for (s = abfd->sections; s != NULL; s = s->next) | |
4078 | { | |
4079 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 4080 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
4081 | { |
4082 | amt = sizeof (struct elf_segment_map); | |
4083 | m = bfd_zalloc (abfd, amt); | |
4084 | if (m == NULL) | |
4085 | goto error_return; | |
4086 | m->next = NULL; | |
4087 | m->p_type = PT_NOTE; | |
4088 | m->count = 1; | |
4089 | m->sections[0] = s; | |
252b5132 | 4090 | |
8ded5a0f AM |
4091 | *pm = m; |
4092 | pm = &m->next; | |
4093 | } | |
4094 | if (s->flags & SEC_THREAD_LOCAL) | |
4095 | { | |
4096 | if (! tls_count) | |
4097 | first_tls = s; | |
4098 | tls_count++; | |
4099 | } | |
4100 | } | |
252b5132 | 4101 | |
8ded5a0f AM |
4102 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
4103 | if (tls_count > 0) | |
4104 | { | |
4105 | int i; | |
252b5132 | 4106 | |
8ded5a0f AM |
4107 | amt = sizeof (struct elf_segment_map); |
4108 | amt += (tls_count - 1) * sizeof (asection *); | |
4109 | m = bfd_zalloc (abfd, amt); | |
4110 | if (m == NULL) | |
4111 | goto error_return; | |
4112 | m->next = NULL; | |
4113 | m->p_type = PT_TLS; | |
4114 | m->count = tls_count; | |
4115 | /* Mandated PF_R. */ | |
4116 | m->p_flags = PF_R; | |
4117 | m->p_flags_valid = 1; | |
4118 | for (i = 0; i < tls_count; ++i) | |
4119 | { | |
4120 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
4121 | m->sections[i] = first_tls; | |
4122 | first_tls = first_tls->next; | |
4123 | } | |
252b5132 | 4124 | |
8ded5a0f AM |
4125 | *pm = m; |
4126 | pm = &m->next; | |
4127 | } | |
252b5132 | 4128 | |
8ded5a0f AM |
4129 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
4130 | segment. */ | |
4131 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
4132 | if (eh_frame_hdr != NULL | |
4133 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 4134 | { |
dc810e39 | 4135 | amt = sizeof (struct elf_segment_map); |
217aa764 | 4136 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
4137 | if (m == NULL) |
4138 | goto error_return; | |
4139 | m->next = NULL; | |
8ded5a0f | 4140 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 4141 | m->count = 1; |
8ded5a0f | 4142 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
4143 | |
4144 | *pm = m; | |
4145 | pm = &m->next; | |
4146 | } | |
13ae64f3 | 4147 | |
8ded5a0f | 4148 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 4149 | { |
8ded5a0f AM |
4150 | amt = sizeof (struct elf_segment_map); |
4151 | m = bfd_zalloc (abfd, amt); | |
4152 | if (m == NULL) | |
4153 | goto error_return; | |
4154 | m->next = NULL; | |
4155 | m->p_type = PT_GNU_STACK; | |
4156 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
4157 | m->p_flags_valid = 1; | |
252b5132 | 4158 | |
8ded5a0f AM |
4159 | *pm = m; |
4160 | pm = &m->next; | |
4161 | } | |
65765700 | 4162 | |
c9df6640 | 4163 | if (dynsec != NULL && elf_tdata (abfd)->relro) |
8ded5a0f | 4164 | { |
c9df6640 L |
4165 | /* We make a PT_GNU_RELRO segment only when there is a |
4166 | PT_DYNAMIC segment. */ | |
8ded5a0f AM |
4167 | amt = sizeof (struct elf_segment_map); |
4168 | m = bfd_zalloc (abfd, amt); | |
4169 | if (m == NULL) | |
4170 | goto error_return; | |
4171 | m->next = NULL; | |
4172 | m->p_type = PT_GNU_RELRO; | |
4173 | m->p_flags = PF_R; | |
4174 | m->p_flags_valid = 1; | |
65765700 | 4175 | |
8ded5a0f AM |
4176 | *pm = m; |
4177 | pm = &m->next; | |
4178 | } | |
9ee5e499 | 4179 | |
8ded5a0f AM |
4180 | free (sections); |
4181 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
4182 | } |
4183 | ||
8ded5a0f AM |
4184 | if (!elf_modify_segment_map (abfd, info)) |
4185 | return FALSE; | |
8c37241b | 4186 | |
8ded5a0f AM |
4187 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4188 | ++count; | |
4189 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 4190 | |
b34976b6 | 4191 | return TRUE; |
252b5132 RH |
4192 | |
4193 | error_return: | |
4194 | if (sections != NULL) | |
4195 | free (sections); | |
b34976b6 | 4196 | return FALSE; |
252b5132 RH |
4197 | } |
4198 | ||
4199 | /* Sort sections by address. */ | |
4200 | ||
4201 | static int | |
217aa764 | 4202 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4203 | { |
4204 | const asection *sec1 = *(const asection **) arg1; | |
4205 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4206 | bfd_size_type size1, size2; |
252b5132 RH |
4207 | |
4208 | /* Sort by LMA first, since this is the address used to | |
4209 | place the section into a segment. */ | |
4210 | if (sec1->lma < sec2->lma) | |
4211 | return -1; | |
4212 | else if (sec1->lma > sec2->lma) | |
4213 | return 1; | |
4214 | ||
4215 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4216 | the same, and this will do nothing. */ | |
4217 | if (sec1->vma < sec2->vma) | |
4218 | return -1; | |
4219 | else if (sec1->vma > sec2->vma) | |
4220 | return 1; | |
4221 | ||
4222 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4223 | ||
07c6e936 | 4224 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4225 | |
4226 | if (TOEND (sec1)) | |
4227 | { | |
4228 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4229 | { |
4230 | /* If the indicies are the same, do not return 0 | |
4231 | here, but continue to try the next comparison. */ | |
4232 | if (sec1->target_index - sec2->target_index != 0) | |
4233 | return sec1->target_index - sec2->target_index; | |
4234 | } | |
252b5132 RH |
4235 | else |
4236 | return 1; | |
4237 | } | |
00a7cdc5 | 4238 | else if (TOEND (sec2)) |
252b5132 RH |
4239 | return -1; |
4240 | ||
4241 | #undef TOEND | |
4242 | ||
00a7cdc5 NC |
4243 | /* Sort by size, to put zero sized sections |
4244 | before others at the same address. */ | |
252b5132 | 4245 | |
eea6121a AM |
4246 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4247 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4248 | |
4249 | if (size1 < size2) | |
252b5132 | 4250 | return -1; |
eecdbe52 | 4251 | if (size1 > size2) |
252b5132 RH |
4252 | return 1; |
4253 | ||
4254 | return sec1->target_index - sec2->target_index; | |
4255 | } | |
4256 | ||
340b6d91 AC |
4257 | /* Ian Lance Taylor writes: |
4258 | ||
4259 | We shouldn't be using % with a negative signed number. That's just | |
4260 | not good. We have to make sure either that the number is not | |
4261 | negative, or that the number has an unsigned type. When the types | |
4262 | are all the same size they wind up as unsigned. When file_ptr is a | |
4263 | larger signed type, the arithmetic winds up as signed long long, | |
4264 | which is wrong. | |
4265 | ||
4266 | What we're trying to say here is something like ``increase OFF by | |
4267 | the least amount that will cause it to be equal to the VMA modulo | |
4268 | the page size.'' */ | |
4269 | /* In other words, something like: | |
4270 | ||
4271 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4272 | off_offset = off % bed->maxpagesize; | |
4273 | if (vma_offset < off_offset) | |
4274 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4275 | else | |
4276 | adjustment = vma_offset - off_offset; | |
4277 | ||
4278 | which can can be collapsed into the expression below. */ | |
4279 | ||
4280 | static file_ptr | |
4281 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4282 | { | |
4283 | return ((vma - off) % maxpagesize); | |
4284 | } | |
4285 | ||
252b5132 RH |
4286 | /* Assign file positions to the sections based on the mapping from |
4287 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4288 | the file header. */ |
252b5132 | 4289 | |
b34976b6 | 4290 | static bfd_boolean |
f3520d2f AM |
4291 | assign_file_positions_for_load_sections (bfd *abfd, |
4292 | struct bfd_link_info *link_info) | |
252b5132 RH |
4293 | { |
4294 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4295 | struct elf_segment_map *m; |
252b5132 | 4296 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4297 | Elf_Internal_Phdr *p; |
02bf8d82 | 4298 | file_ptr off; |
3f570048 | 4299 | bfd_size_type maxpagesize; |
f3520d2f | 4300 | unsigned int alloc; |
0920dee7 | 4301 | unsigned int i, j; |
252b5132 | 4302 | |
e36284ab AM |
4303 | if (link_info == NULL |
4304 | && !elf_modify_segment_map (abfd, link_info)) | |
8ded5a0f | 4305 | return FALSE; |
252b5132 | 4306 | |
8ded5a0f | 4307 | alloc = 0; |
252b5132 | 4308 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4309 | ++alloc; |
252b5132 RH |
4310 | |
4311 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4312 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4313 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4314 | |
62d7a5f6 | 4315 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4316 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4317 | else | |
4318 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4319 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4320 | |
4321 | if (alloc == 0) | |
f3520d2f | 4322 | { |
8ded5a0f AM |
4323 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4324 | return TRUE; | |
f3520d2f | 4325 | } |
252b5132 | 4326 | |
d0fb9a8d | 4327 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4328 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4329 | if (phdrs == NULL) |
b34976b6 | 4330 | return FALSE; |
252b5132 | 4331 | |
3f570048 AM |
4332 | maxpagesize = 1; |
4333 | if ((abfd->flags & D_PAGED) != 0) | |
4334 | maxpagesize = bed->maxpagesize; | |
4335 | ||
252b5132 RH |
4336 | off = bed->s->sizeof_ehdr; |
4337 | off += alloc * bed->s->sizeof_phdr; | |
4338 | ||
0920dee7 | 4339 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4340 | m != NULL; |
0920dee7 | 4341 | m = m->next, p++, j++) |
252b5132 | 4342 | { |
252b5132 | 4343 | asection **secpp; |
bf988460 AM |
4344 | bfd_vma off_adjust; |
4345 | bfd_boolean no_contents; | |
252b5132 RH |
4346 | |
4347 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4348 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4349 | not be done to the PT_NOTE section of a corefile, which may |
4350 | contain several pseudo-sections artificially created by bfd. | |
4351 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4352 | if (m->count > 1 |
4353 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4354 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4355 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4356 | elf_sort_sections); | |
4357 | ||
b301b248 AM |
4358 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4359 | number of sections with contents contributing to both p_filesz | |
4360 | and p_memsz, followed by a number of sections with no contents | |
4361 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4362 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4363 | p->p_type = m->p_type; |
28a7f3e7 | 4364 | p->p_flags = m->p_flags; |
252b5132 | 4365 | |
3f570048 AM |
4366 | if (m->count == 0) |
4367 | p->p_vaddr = 0; | |
4368 | else | |
3271a814 | 4369 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4370 | |
4371 | if (m->p_paddr_valid) | |
4372 | p->p_paddr = m->p_paddr; | |
4373 | else if (m->count == 0) | |
4374 | p->p_paddr = 0; | |
4375 | else | |
4376 | p->p_paddr = m->sections[0]->lma; | |
4377 | ||
4378 | if (p->p_type == PT_LOAD | |
4379 | && (abfd->flags & D_PAGED) != 0) | |
4380 | { | |
4381 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4382 | the maximum page size. When copying an executable with | |
4383 | objcopy, we set m->p_align from the input file. Use this | |
4384 | value for maxpagesize rather than bed->maxpagesize, which | |
4385 | may be different. Note that we use maxpagesize for PT_TLS | |
4386 | segment alignment later in this function, so we are relying | |
4387 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4388 | segment. */ | |
4389 | if (m->p_align_valid) | |
4390 | maxpagesize = m->p_align; | |
4391 | ||
4392 | p->p_align = maxpagesize; | |
4393 | } | |
4394 | else if (m->count == 0) | |
4395 | p->p_align = 1 << bed->s->log_file_align; | |
3271a814 NS |
4396 | else if (m->p_align_valid) |
4397 | p->p_align = m->p_align; | |
3f570048 AM |
4398 | else |
4399 | p->p_align = 0; | |
4400 | ||
bf988460 AM |
4401 | no_contents = FALSE; |
4402 | off_adjust = 0; | |
252b5132 | 4403 | if (p->p_type == PT_LOAD |
b301b248 | 4404 | && m->count > 0) |
252b5132 | 4405 | { |
b301b248 | 4406 | bfd_size_type align; |
a49e53ed | 4407 | unsigned int align_power = 0; |
b301b248 | 4408 | |
3271a814 NS |
4409 | if (m->p_align_valid) |
4410 | align = p->p_align; | |
4411 | else | |
252b5132 | 4412 | { |
3271a814 NS |
4413 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4414 | { | |
4415 | unsigned int secalign; | |
4416 | ||
4417 | secalign = bfd_get_section_alignment (abfd, *secpp); | |
4418 | if (secalign > align_power) | |
4419 | align_power = secalign; | |
4420 | } | |
4421 | align = (bfd_size_type) 1 << align_power; | |
4422 | if (align < maxpagesize) | |
4423 | align = maxpagesize; | |
b301b248 | 4424 | } |
252b5132 | 4425 | |
02bf8d82 AM |
4426 | for (i = 0; i < m->count; i++) |
4427 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4428 | /* If we aren't making room for this section, then | |
4429 | it must be SHT_NOBITS regardless of what we've | |
4430 | set via struct bfd_elf_special_section. */ | |
4431 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4432 | ||
bf988460 AM |
4433 | /* Find out whether this segment contains any loadable |
4434 | sections. If the first section isn't loadable, the same | |
4435 | holds for any other sections. */ | |
4436 | i = 0; | |
4437 | while (elf_section_type (m->sections[i]) == SHT_NOBITS) | |
b301b248 | 4438 | { |
bf988460 AM |
4439 | /* If a segment starts with .tbss, we need to look |
4440 | at the next section to decide whether the segment | |
4441 | has any loadable sections. */ | |
4442 | if ((elf_section_flags (m->sections[i]) & SHF_TLS) == 0 | |
4443 | || ++i >= m->count) | |
b301b248 | 4444 | { |
bf988460 AM |
4445 | no_contents = TRUE; |
4446 | break; | |
b301b248 | 4447 | } |
252b5132 | 4448 | } |
bf988460 AM |
4449 | |
4450 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4451 | off += off_adjust; | |
4452 | if (no_contents) | |
4453 | { | |
4454 | /* We shouldn't need to align the segment on disk since | |
4455 | the segment doesn't need file space, but the gABI | |
4456 | arguably requires the alignment and glibc ld.so | |
4457 | checks it. So to comply with the alignment | |
4458 | requirement but not waste file space, we adjust | |
4459 | p_offset for just this segment. (OFF_ADJUST is | |
4460 | subtracted from OFF later.) This may put p_offset | |
4461 | past the end of file, but that shouldn't matter. */ | |
4462 | } | |
4463 | else | |
4464 | off_adjust = 0; | |
252b5132 | 4465 | } |
b1a6d0b1 NC |
4466 | /* Make sure the .dynamic section is the first section in the |
4467 | PT_DYNAMIC segment. */ | |
4468 | else if (p->p_type == PT_DYNAMIC | |
4469 | && m->count > 1 | |
4470 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4471 | { | |
4472 | _bfd_error_handler | |
b301b248 AM |
4473 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4474 | abfd); | |
b1a6d0b1 NC |
4475 | bfd_set_error (bfd_error_bad_value); |
4476 | return FALSE; | |
4477 | } | |
252b5132 | 4478 | |
252b5132 RH |
4479 | p->p_offset = 0; |
4480 | p->p_filesz = 0; | |
4481 | p->p_memsz = 0; | |
4482 | ||
4483 | if (m->includes_filehdr) | |
4484 | { | |
bf988460 | 4485 | if (!m->p_flags_valid) |
252b5132 | 4486 | p->p_flags |= PF_R; |
252b5132 RH |
4487 | p->p_filesz = bed->s->sizeof_ehdr; |
4488 | p->p_memsz = bed->s->sizeof_ehdr; | |
4489 | if (m->count > 0) | |
4490 | { | |
4491 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4492 | ||
4493 | if (p->p_vaddr < (bfd_vma) off) | |
4494 | { | |
caf47ea6 | 4495 | (*_bfd_error_handler) |
b301b248 AM |
4496 | (_("%B: Not enough room for program headers, try linking with -N"), |
4497 | abfd); | |
252b5132 | 4498 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4499 | return FALSE; |
252b5132 RH |
4500 | } |
4501 | ||
4502 | p->p_vaddr -= off; | |
bf988460 | 4503 | if (!m->p_paddr_valid) |
252b5132 RH |
4504 | p->p_paddr -= off; |
4505 | } | |
252b5132 RH |
4506 | } |
4507 | ||
4508 | if (m->includes_phdrs) | |
4509 | { | |
bf988460 | 4510 | if (!m->p_flags_valid) |
252b5132 RH |
4511 | p->p_flags |= PF_R; |
4512 | ||
f3520d2f | 4513 | if (!m->includes_filehdr) |
252b5132 RH |
4514 | { |
4515 | p->p_offset = bed->s->sizeof_ehdr; | |
4516 | ||
4517 | if (m->count > 0) | |
4518 | { | |
4519 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4520 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4521 | if (!m->p_paddr_valid) |
252b5132 RH |
4522 | p->p_paddr -= off - p->p_offset; |
4523 | } | |
252b5132 RH |
4524 | } |
4525 | ||
4526 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4527 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4528 | } | |
4529 | ||
4530 | if (p->p_type == PT_LOAD | |
4531 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4532 | { | |
bf988460 | 4533 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4534 | p->p_offset = off; |
252b5132 RH |
4535 | else |
4536 | { | |
4537 | file_ptr adjust; | |
4538 | ||
4539 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4540 | if (!no_contents) |
4541 | p->p_filesz += adjust; | |
252b5132 RH |
4542 | p->p_memsz += adjust; |
4543 | } | |
4544 | } | |
4545 | ||
1ea63fd2 AM |
4546 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4547 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4548 | core files, for sections in PT_NOTE segments. | |
4549 | assign_file_positions_for_non_load_sections will set filepos | |
4550 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4551 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4552 | { | |
4553 | asection *sec; | |
252b5132 | 4554 | bfd_size_type align; |
627b32bc | 4555 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4556 | |
4557 | sec = *secpp; | |
02bf8d82 | 4558 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4559 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4560 | |
b301b248 AM |
4561 | if (p->p_type == PT_LOAD |
4562 | || p->p_type == PT_TLS) | |
252b5132 | 4563 | { |
8c252fd9 | 4564 | bfd_signed_vma adjust = sec->lma - (p->p_paddr + p->p_memsz); |
252b5132 | 4565 | |
02bf8d82 AM |
4566 | if (this_hdr->sh_type != SHT_NOBITS |
4567 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4568 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
0e922b77 | 4569 | || p->p_type == PT_TLS))) |
252b5132 | 4570 | { |
252b5132 | 4571 | if (adjust < 0) |
b301b248 AM |
4572 | { |
4573 | (*_bfd_error_handler) | |
4574 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4575 | abfd, sec, (unsigned long) sec->lma); | |
4576 | adjust = 0; | |
4577 | } | |
252b5132 | 4578 | p->p_memsz += adjust; |
0e922b77 | 4579 | |
02bf8d82 | 4580 | if (this_hdr->sh_type != SHT_NOBITS) |
0e922b77 AM |
4581 | { |
4582 | off += adjust; | |
4583 | p->p_filesz += adjust; | |
4584 | } | |
252b5132 | 4585 | } |
252b5132 RH |
4586 | } |
4587 | ||
4588 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4589 | { | |
b301b248 AM |
4590 | /* The section at i == 0 is the one that actually contains |
4591 | everything. */ | |
4a938328 MS |
4592 | if (i == 0) |
4593 | { | |
627b32bc | 4594 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4595 | off += this_hdr->sh_size; |
4596 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4597 | p->p_memsz = 0; |
4598 | p->p_align = 1; | |
252b5132 | 4599 | } |
4a938328 | 4600 | else |
252b5132 | 4601 | { |
b301b248 | 4602 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4603 | sec->filepos = 0; |
eea6121a | 4604 | sec->size = 0; |
b301b248 AM |
4605 | sec->flags = 0; |
4606 | continue; | |
252b5132 | 4607 | } |
252b5132 RH |
4608 | } |
4609 | else | |
4610 | { | |
b301b248 AM |
4611 | if (p->p_type == PT_LOAD) |
4612 | { | |
02bf8d82 AM |
4613 | this_hdr->sh_offset = sec->filepos = off; |
4614 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4615 | off += this_hdr->sh_size; |
b301b248 | 4616 | } |
252b5132 | 4617 | |
02bf8d82 | 4618 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4619 | { |
6a3cd2b4 | 4620 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4621 | /* A load section without SHF_ALLOC is something like |
4622 | a note section in a PT_NOTE segment. These take | |
4623 | file space but are not loaded into memory. */ | |
4624 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4625 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4626 | } |
6a3cd2b4 | 4627 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4628 | { |
6a3cd2b4 AM |
4629 | if (p->p_type == PT_TLS) |
4630 | p->p_memsz += this_hdr->sh_size; | |
4631 | ||
4632 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4633 | normal segments. */ | |
4634 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4635 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4636 | } |
4637 | ||
c9df6640 L |
4638 | if (p->p_type == PT_GNU_RELRO) |
4639 | p->p_align = 1; | |
4640 | else if (align > p->p_align | |
3271a814 | 4641 | && !m->p_align_valid |
c9df6640 L |
4642 | && (p->p_type != PT_LOAD |
4643 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4644 | p->p_align = align; |
4645 | } | |
4646 | ||
bf988460 | 4647 | if (!m->p_flags_valid) |
252b5132 RH |
4648 | { |
4649 | p->p_flags |= PF_R; | |
02bf8d82 | 4650 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4651 | p->p_flags |= PF_X; |
02bf8d82 | 4652 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4653 | p->p_flags |= PF_W; |
4654 | } | |
4655 | } | |
bf988460 | 4656 | off -= off_adjust; |
0920dee7 | 4657 | |
7c928300 AM |
4658 | /* Check that all sections are in a PT_LOAD segment. |
4659 | Don't check funky gdb generated core files. */ | |
4660 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4661 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4662 | { | |
4663 | Elf_Internal_Shdr *this_hdr; | |
4664 | asection *sec; | |
4665 | ||
4666 | sec = *secpp; | |
4667 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4668 | if (this_hdr->sh_size != 0 | |
4669 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4670 | { | |
4671 | (*_bfd_error_handler) | |
4672 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4673 | abfd, sec, j); | |
4674 | bfd_set_error (bfd_error_bad_value); | |
4675 | return FALSE; | |
4676 | } | |
4677 | } | |
252b5132 RH |
4678 | } |
4679 | ||
f3520d2f AM |
4680 | elf_tdata (abfd)->next_file_pos = off; |
4681 | return TRUE; | |
4682 | } | |
4683 | ||
4684 | /* Assign file positions for the other sections. */ | |
4685 | ||
4686 | static bfd_boolean | |
4687 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4688 | struct bfd_link_info *link_info) | |
4689 | { | |
4690 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4691 | Elf_Internal_Shdr **i_shdrpp; | |
4692 | Elf_Internal_Shdr **hdrpp; | |
4693 | Elf_Internal_Phdr *phdrs; | |
4694 | Elf_Internal_Phdr *p; | |
4695 | struct elf_segment_map *m; | |
4696 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4697 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4698 | file_ptr off; | |
4699 | unsigned int num_sec; | |
4700 | unsigned int i; | |
4701 | unsigned int count; | |
4702 | ||
5c182d5f AM |
4703 | i_shdrpp = elf_elfsections (abfd); |
4704 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4705 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4706 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4707 | { | |
4708 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4709 | Elf_Internal_Shdr *hdr; | |
4710 | ||
4711 | hdr = *hdrpp; | |
4712 | if (hdr->bfd_section != NULL | |
252e386e AM |
4713 | && (hdr->bfd_section->filepos != 0 |
4714 | || (hdr->sh_type == SHT_NOBITS | |
4715 | && hdr->contents == NULL))) | |
627b32bc | 4716 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4717 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4718 | { | |
49c13adb L |
4719 | if (hdr->sh_size != 0) |
4720 | ((*_bfd_error_handler) | |
4721 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4722 | abfd, |
4723 | (hdr->bfd_section == NULL | |
4724 | ? "*unknown*" | |
4725 | : hdr->bfd_section->name))); | |
4726 | /* We don't need to page align empty sections. */ | |
4727 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4728 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4729 | bed->maxpagesize); | |
4730 | else | |
4731 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4732 | hdr->sh_addralign); | |
4733 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4734 | FALSE); | |
4735 | } | |
4736 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4737 | && hdr->bfd_section == NULL) | |
4738 | || hdr == i_shdrpp[tdata->symtab_section] | |
4739 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4740 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4741 | hdr->sh_offset = -1; | |
4742 | else | |
4743 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4744 | ||
4745 | if (i == SHN_LORESERVE - 1) | |
4746 | { | |
4747 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4748 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4749 | } | |
4750 | } | |
4751 | ||
252b5132 RH |
4752 | /* Now that we have set the section file positions, we can set up |
4753 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4754 | count = 0; |
4755 | filehdr_vaddr = 0; | |
4756 | filehdr_paddr = 0; | |
4757 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4758 | phdrs_paddr = 0; | |
4759 | phdrs = elf_tdata (abfd)->phdr; | |
4760 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4761 | m != NULL; | |
4762 | m = m->next, p++) | |
4763 | { | |
4764 | ++count; | |
4765 | if (p->p_type != PT_LOAD) | |
4766 | continue; | |
4767 | ||
4768 | if (m->includes_filehdr) | |
4769 | { | |
4770 | filehdr_vaddr = p->p_vaddr; | |
4771 | filehdr_paddr = p->p_paddr; | |
4772 | } | |
4773 | if (m->includes_phdrs) | |
4774 | { | |
4775 | phdrs_vaddr = p->p_vaddr; | |
4776 | phdrs_paddr = p->p_paddr; | |
4777 | if (m->includes_filehdr) | |
4778 | { | |
4779 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4780 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4781 | } | |
4782 | } | |
4783 | } | |
4784 | ||
252b5132 RH |
4785 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4786 | m != NULL; | |
4787 | m = m->next, p++) | |
4788 | { | |
1ea63fd2 | 4789 | if (m->count != 0) |
252b5132 | 4790 | { |
1ea63fd2 AM |
4791 | if (p->p_type != PT_LOAD |
4792 | && (p->p_type != PT_NOTE || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4793 | { |
1ea63fd2 AM |
4794 | Elf_Internal_Shdr *hdr; |
4795 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4796 | ||
4797 | hdr = &elf_section_data (m->sections[m->count - 1])->this_hdr; | |
4798 | p->p_filesz = (m->sections[m->count - 1]->filepos | |
4799 | - m->sections[0]->filepos); | |
4800 | if (hdr->sh_type != SHT_NOBITS) | |
4801 | p->p_filesz += hdr->sh_size; | |
4802 | ||
4803 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4804 | } |
252b5132 | 4805 | } |
1ea63fd2 | 4806 | else |
252b5132 RH |
4807 | { |
4808 | if (m->includes_filehdr) | |
4809 | { | |
4810 | p->p_vaddr = filehdr_vaddr; | |
4811 | if (! m->p_paddr_valid) | |
4812 | p->p_paddr = filehdr_paddr; | |
4813 | } | |
4814 | else if (m->includes_phdrs) | |
4815 | { | |
4816 | p->p_vaddr = phdrs_vaddr; | |
4817 | if (! m->p_paddr_valid) | |
4818 | p->p_paddr = phdrs_paddr; | |
4819 | } | |
8c37241b JJ |
4820 | else if (p->p_type == PT_GNU_RELRO) |
4821 | { | |
4822 | Elf_Internal_Phdr *lp; | |
4823 | ||
4824 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4825 | { | |
4826 | if (lp->p_type == PT_LOAD | |
4827 | && lp->p_vaddr <= link_info->relro_end | |
4828 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4829 | && (lp->p_vaddr + lp->p_filesz |
4830 | >= link_info->relro_end)) | |
8c37241b JJ |
4831 | break; |
4832 | } | |
4833 | ||
4834 | if (lp < phdrs + count | |
4835 | && link_info->relro_end > lp->p_vaddr) | |
4836 | { | |
4837 | p->p_vaddr = lp->p_vaddr; | |
4838 | p->p_paddr = lp->p_paddr; | |
4839 | p->p_offset = lp->p_offset; | |
4840 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4841 | p->p_memsz = p->p_filesz; | |
4842 | p->p_align = 1; | |
4843 | p->p_flags = (lp->p_flags & ~PF_W); | |
4844 | } | |
4845 | else | |
4846 | { | |
4847 | memset (p, 0, sizeof *p); | |
4848 | p->p_type = PT_NULL; | |
4849 | } | |
4850 | } | |
252b5132 RH |
4851 | } |
4852 | } | |
4853 | ||
252b5132 RH |
4854 | elf_tdata (abfd)->next_file_pos = off; |
4855 | ||
b34976b6 | 4856 | return TRUE; |
252b5132 RH |
4857 | } |
4858 | ||
252b5132 RH |
4859 | /* Work out the file positions of all the sections. This is called by |
4860 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4861 | VMAs must be known before this is called. | |
4862 | ||
e0638f70 AM |
4863 | Reloc sections come in two flavours: Those processed specially as |
4864 | "side-channel" data attached to a section to which they apply, and | |
4865 | those that bfd doesn't process as relocations. The latter sort are | |
4866 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4867 | consider the former sort here, unless they form part of the loadable | |
4868 | image. Reloc sections not assigned here will be handled later by | |
4869 | assign_file_positions_for_relocs. | |
252b5132 RH |
4870 | |
4871 | We also don't set the positions of the .symtab and .strtab here. */ | |
4872 | ||
b34976b6 | 4873 | static bfd_boolean |
c84fca4d AO |
4874 | assign_file_positions_except_relocs (bfd *abfd, |
4875 | struct bfd_link_info *link_info) | |
252b5132 | 4876 | { |
5c182d5f AM |
4877 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4878 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4879 | file_ptr off; |
9c5bfbb7 | 4880 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4881 | |
4882 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4883 | && bfd_get_format (abfd) != bfd_core) | |
4884 | { | |
5c182d5f AM |
4885 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4886 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4887 | Elf_Internal_Shdr **hdrpp; |
4888 | unsigned int i; | |
4889 | ||
4890 | /* Start after the ELF header. */ | |
4891 | off = i_ehdrp->e_ehsize; | |
4892 | ||
4893 | /* We are not creating an executable, which means that we are | |
4894 | not creating a program header, and that the actual order of | |
4895 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4896 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4897 | { |
4898 | Elf_Internal_Shdr *hdr; | |
4899 | ||
4900 | hdr = *hdrpp; | |
e0638f70 AM |
4901 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4902 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4903 | || i == tdata->symtab_section |
4904 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4905 | || i == tdata->strtab_section) |
4906 | { | |
4907 | hdr->sh_offset = -1; | |
252b5132 | 4908 | } |
9ad5cbcf | 4909 | else |
b34976b6 | 4910 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4911 | |
9ad5cbcf AM |
4912 | if (i == SHN_LORESERVE - 1) |
4913 | { | |
4914 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4915 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4916 | } | |
252b5132 RH |
4917 | } |
4918 | } | |
4919 | else | |
4920 | { | |
f3520d2f AM |
4921 | unsigned int alloc; |
4922 | ||
252b5132 RH |
4923 | /* Assign file positions for the loaded sections based on the |
4924 | assignment of sections to segments. */ | |
f3520d2f AM |
4925 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4926 | return FALSE; | |
4927 | ||
4928 | /* And for non-load sections. */ | |
4929 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4930 | return FALSE; | |
4931 | ||
e36284ab AM |
4932 | if (bed->elf_backend_modify_program_headers != NULL) |
4933 | { | |
4934 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4935 | return FALSE; | |
4936 | } | |
4937 | ||
f3520d2f AM |
4938 | /* Write out the program headers. */ |
4939 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4940 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4941 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4942 | return FALSE; |
252b5132 | 4943 | |
5c182d5f | 4944 | off = tdata->next_file_pos; |
252b5132 RH |
4945 | } |
4946 | ||
4947 | /* Place the section headers. */ | |
45d6a902 | 4948 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4949 | i_ehdrp->e_shoff = off; |
4950 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4951 | ||
5c182d5f | 4952 | tdata->next_file_pos = off; |
252b5132 | 4953 | |
b34976b6 | 4954 | return TRUE; |
252b5132 RH |
4955 | } |
4956 | ||
b34976b6 | 4957 | static bfd_boolean |
217aa764 | 4958 | prep_headers (bfd *abfd) |
252b5132 RH |
4959 | { |
4960 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4961 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4962 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4963 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4964 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4965 | |
4966 | i_ehdrp = elf_elfheader (abfd); | |
4967 | i_shdrp = elf_elfsections (abfd); | |
4968 | ||
2b0f7ef9 | 4969 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4970 | if (shstrtab == NULL) |
b34976b6 | 4971 | return FALSE; |
252b5132 RH |
4972 | |
4973 | elf_shstrtab (abfd) = shstrtab; | |
4974 | ||
4975 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4976 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4977 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4978 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4979 | ||
4980 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4981 | i_ehdrp->e_ident[EI_DATA] = | |
4982 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4983 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4984 | ||
252b5132 RH |
4985 | if ((abfd->flags & DYNAMIC) != 0) |
4986 | i_ehdrp->e_type = ET_DYN; | |
4987 | else if ((abfd->flags & EXEC_P) != 0) | |
4988 | i_ehdrp->e_type = ET_EXEC; | |
4989 | else if (bfd_get_format (abfd) == bfd_core) | |
4990 | i_ehdrp->e_type = ET_CORE; | |
4991 | else | |
4992 | i_ehdrp->e_type = ET_REL; | |
4993 | ||
4994 | switch (bfd_get_arch (abfd)) | |
4995 | { | |
4996 | case bfd_arch_unknown: | |
4997 | i_ehdrp->e_machine = EM_NONE; | |
4998 | break; | |
aa4f99bb AO |
4999 | |
5000 | /* There used to be a long list of cases here, each one setting | |
5001 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
5002 | in the corresponding bfd definition. To avoid duplication, | |
5003 | the switch was removed. Machines that need special handling | |
5004 | can generally do it in elf_backend_final_write_processing(), | |
5005 | unless they need the information earlier than the final write. | |
5006 | Such need can generally be supplied by replacing the tests for | |
5007 | e_machine with the conditions used to determine it. */ | |
252b5132 | 5008 | default: |
9c5bfbb7 AM |
5009 | i_ehdrp->e_machine = bed->elf_machine_code; |
5010 | } | |
aa4f99bb | 5011 | |
252b5132 RH |
5012 | i_ehdrp->e_version = bed->s->ev_current; |
5013 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
5014 | ||
c044fabd | 5015 | /* No program header, for now. */ |
252b5132 RH |
5016 | i_ehdrp->e_phoff = 0; |
5017 | i_ehdrp->e_phentsize = 0; | |
5018 | i_ehdrp->e_phnum = 0; | |
5019 | ||
c044fabd | 5020 | /* Each bfd section is section header entry. */ |
252b5132 RH |
5021 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
5022 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
5023 | ||
c044fabd | 5024 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 5025 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
5026 | /* It all happens later. */ |
5027 | ; | |
252b5132 RH |
5028 | else |
5029 | { | |
5030 | i_ehdrp->e_phentsize = 0; | |
5031 | i_phdrp = 0; | |
5032 | i_ehdrp->e_phoff = 0; | |
5033 | } | |
5034 | ||
5035 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 5036 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 5037 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 5038 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 5039 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 5040 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
5041 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
5042 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
5043 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 5044 | return FALSE; |
252b5132 | 5045 | |
b34976b6 | 5046 | return TRUE; |
252b5132 RH |
5047 | } |
5048 | ||
5049 | /* Assign file positions for all the reloc sections which are not part | |
5050 | of the loadable file image. */ | |
5051 | ||
5052 | void | |
217aa764 | 5053 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
5054 | { |
5055 | file_ptr off; | |
9ad5cbcf | 5056 | unsigned int i, num_sec; |
252b5132 RH |
5057 | Elf_Internal_Shdr **shdrpp; |
5058 | ||
5059 | off = elf_tdata (abfd)->next_file_pos; | |
5060 | ||
9ad5cbcf AM |
5061 | num_sec = elf_numsections (abfd); |
5062 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
5063 | { |
5064 | Elf_Internal_Shdr *shdrp; | |
5065 | ||
5066 | shdrp = *shdrpp; | |
5067 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
5068 | && shdrp->sh_offset == -1) | |
b34976b6 | 5069 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
5070 | } |
5071 | ||
5072 | elf_tdata (abfd)->next_file_pos = off; | |
5073 | } | |
5074 | ||
b34976b6 | 5075 | bfd_boolean |
217aa764 | 5076 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 5077 | { |
9c5bfbb7 | 5078 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
5079 | Elf_Internal_Ehdr *i_ehdrp; |
5080 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 5081 | bfd_boolean failed; |
9ad5cbcf | 5082 | unsigned int count, num_sec; |
252b5132 RH |
5083 | |
5084 | if (! abfd->output_has_begun | |
217aa764 | 5085 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5086 | return FALSE; |
252b5132 RH |
5087 | |
5088 | i_shdrp = elf_elfsections (abfd); | |
5089 | i_ehdrp = elf_elfheader (abfd); | |
5090 | ||
b34976b6 | 5091 | failed = FALSE; |
252b5132 RH |
5092 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5093 | if (failed) | |
b34976b6 | 5094 | return FALSE; |
252b5132 RH |
5095 | |
5096 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
5097 | ||
c044fabd | 5098 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5099 | num_sec = elf_numsections (abfd); |
5100 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
5101 | { |
5102 | if (bed->elf_backend_section_processing) | |
5103 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
5104 | if (i_shdrp[count]->contents) | |
5105 | { | |
dc810e39 AM |
5106 | bfd_size_type amt = i_shdrp[count]->sh_size; |
5107 | ||
252b5132 | 5108 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 5109 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 5110 | return FALSE; |
252b5132 | 5111 | } |
9ad5cbcf AM |
5112 | if (count == SHN_LORESERVE - 1) |
5113 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
5114 | } |
5115 | ||
5116 | /* Write out the section header names. */ | |
26ae6d5e DJ |
5117 | if (elf_shstrtab (abfd) != NULL |
5118 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
5119 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 5120 | return FALSE; |
252b5132 RH |
5121 | |
5122 | if (bed->elf_backend_final_write_processing) | |
5123 | (*bed->elf_backend_final_write_processing) (abfd, | |
5124 | elf_tdata (abfd)->linker); | |
5125 | ||
5126 | return bed->s->write_shdrs_and_ehdr (abfd); | |
5127 | } | |
5128 | ||
b34976b6 | 5129 | bfd_boolean |
217aa764 | 5130 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5131 | { |
c044fabd | 5132 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5133 | return _bfd_elf_write_object_contents (abfd); |
5134 | } | |
c044fabd KH |
5135 | |
5136 | /* Given a section, search the header to find them. */ | |
5137 | ||
252b5132 | 5138 | int |
198beae2 | 5139 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5140 | { |
9c5bfbb7 | 5141 | const struct elf_backend_data *bed; |
252b5132 | 5142 | int index; |
252b5132 | 5143 | |
9ad5cbcf AM |
5144 | if (elf_section_data (asect) != NULL |
5145 | && elf_section_data (asect)->this_idx != 0) | |
5146 | return elf_section_data (asect)->this_idx; | |
5147 | ||
5148 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5149 | index = SHN_ABS; |
5150 | else if (bfd_is_com_section (asect)) | |
5151 | index = SHN_COMMON; | |
5152 | else if (bfd_is_und_section (asect)) | |
5153 | index = SHN_UNDEF; | |
5154 | else | |
6dc132d9 | 5155 | index = -1; |
252b5132 | 5156 | |
af746e92 | 5157 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5158 | if (bed->elf_backend_section_from_bfd_section) |
5159 | { | |
af746e92 | 5160 | int retval = index; |
9ad5cbcf | 5161 | |
af746e92 AM |
5162 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5163 | return retval; | |
252b5132 RH |
5164 | } |
5165 | ||
af746e92 AM |
5166 | if (index == -1) |
5167 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 5168 | |
af746e92 | 5169 | return index; |
252b5132 RH |
5170 | } |
5171 | ||
5172 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5173 | on error. */ | |
5174 | ||
5175 | int | |
217aa764 | 5176 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5177 | { |
5178 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5179 | int idx; | |
5180 | flagword flags = asym_ptr->flags; | |
5181 | ||
5182 | /* When gas creates relocations against local labels, it creates its | |
5183 | own symbol for the section, but does put the symbol into the | |
5184 | symbol chain, so udata is 0. When the linker is generating | |
5185 | relocatable output, this section symbol may be for one of the | |
5186 | input sections rather than the output section. */ | |
5187 | if (asym_ptr->udata.i == 0 | |
5188 | && (flags & BSF_SECTION_SYM) | |
5189 | && asym_ptr->section) | |
5190 | { | |
5372391b | 5191 | asection *sec; |
252b5132 RH |
5192 | int indx; |
5193 | ||
5372391b AM |
5194 | sec = asym_ptr->section; |
5195 | if (sec->owner != abfd && sec->output_section != NULL) | |
5196 | sec = sec->output_section; | |
5197 | if (sec->owner == abfd | |
5198 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5199 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5200 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5201 | } | |
5202 | ||
5203 | idx = asym_ptr->udata.i; | |
5204 | ||
5205 | if (idx == 0) | |
5206 | { | |
5207 | /* This case can occur when using --strip-symbol on a symbol | |
5208 | which is used in a relocation entry. */ | |
5209 | (*_bfd_error_handler) | |
d003868e AM |
5210 | (_("%B: symbol `%s' required but not present"), |
5211 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5212 | bfd_set_error (bfd_error_no_symbols); |
5213 | return -1; | |
5214 | } | |
5215 | ||
5216 | #if DEBUG & 4 | |
5217 | { | |
5218 | fprintf (stderr, | |
661a3fd4 | 5219 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5220 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5221 | elf_symbol_flags (flags)); | |
5222 | fflush (stderr); | |
5223 | } | |
5224 | #endif | |
5225 | ||
5226 | return idx; | |
5227 | } | |
5228 | ||
84d1d650 | 5229 | /* Rewrite program header information. */ |
252b5132 | 5230 | |
b34976b6 | 5231 | static bfd_boolean |
84d1d650 | 5232 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5233 | { |
b34976b6 AM |
5234 | Elf_Internal_Ehdr *iehdr; |
5235 | struct elf_segment_map *map; | |
5236 | struct elf_segment_map *map_first; | |
5237 | struct elf_segment_map **pointer_to_map; | |
5238 | Elf_Internal_Phdr *segment; | |
5239 | asection *section; | |
5240 | unsigned int i; | |
5241 | unsigned int num_segments; | |
5242 | bfd_boolean phdr_included = FALSE; | |
5243 | bfd_vma maxpagesize; | |
5244 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5245 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5246 | const struct elf_backend_data *bed; |
bc67d8a6 | 5247 | |
caf47ea6 | 5248 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5249 | iehdr = elf_elfheader (ibfd); |
5250 | ||
bc67d8a6 | 5251 | map_first = NULL; |
c044fabd | 5252 | pointer_to_map = &map_first; |
252b5132 RH |
5253 | |
5254 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5255 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5256 | ||
5257 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5258 | #define SEGMENT_END(segment, start) \ |
5259 | (start + (segment->p_memsz > segment->p_filesz \ | |
5260 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5261 | |
eecdbe52 JJ |
5262 | #define SECTION_SIZE(section, segment) \ |
5263 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5264 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5265 | ? section->size : 0) |
eecdbe52 | 5266 | |
b34976b6 | 5267 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5268 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5269 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5270 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5271 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5272 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5273 | |
b34976b6 | 5274 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5275 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5276 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5277 | (section->lma >= base \ | |
eecdbe52 | 5278 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5279 | <= SEGMENT_END (segment, base))) |
252b5132 | 5280 | |
c044fabd | 5281 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5282 | #define IS_COREFILE_NOTE(p, s) \ |
5283 | (p->p_type == PT_NOTE \ | |
5284 | && bfd_get_format (ibfd) == bfd_core \ | |
5285 | && s->vma == 0 && s->lma == 0 \ | |
5286 | && (bfd_vma) s->filepos >= p->p_offset \ | |
cb3ff1e5 | 5287 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5288 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5289 | |
5290 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5291 | linker, which generates a PT_INTERP section with p_vaddr and | |
5292 | p_memsz set to 0. */ | |
aecc8f8a AM |
5293 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5294 | (p->p_vaddr == 0 \ | |
5295 | && p->p_paddr == 0 \ | |
5296 | && p->p_memsz == 0 \ | |
5297 | && p->p_filesz > 0 \ | |
5298 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5299 | && s->size > 0 \ |
aecc8f8a | 5300 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5301 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5302 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5303 | |
bc67d8a6 NC |
5304 | /* Decide if the given section should be included in the given segment. |
5305 | A section will be included if: | |
f5ffc919 NC |
5306 | 1. It is within the address space of the segment -- we use the LMA |
5307 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5308 | 2. It is an allocated segment, |
5309 | 3. There is an output section associated with it, | |
eecdbe52 | 5310 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5311 | 5. PT_GNU_STACK segments do not include any sections. |
5312 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5313 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5314 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5315 | (with the possible exception of .dynamic). */ | |
9f17e2a6 | 5316 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5317 | ((((segment->p_paddr \ |
5318 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5319 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5320 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5321 | || IS_COREFILE_NOTE (segment, section)) \ |
03394ac9 | 5322 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5323 | && (segment->p_type != PT_TLS \ |
5324 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5325 | && (segment->p_type == PT_LOAD \ | |
5326 | || segment->p_type == PT_TLS \ | |
5327 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5328 | && (segment->p_type != PT_DYNAMIC \ |
5329 | || SECTION_SIZE (section, segment) > 0 \ | |
5330 | || (segment->p_paddr \ | |
5331 | ? segment->p_paddr != section->lma \ | |
5332 | : segment->p_vaddr != section->vma) \ | |
5333 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5334 | == 0)) \ | |
82e51918 | 5335 | && ! section->segment_mark) |
bc67d8a6 | 5336 | |
9f17e2a6 L |
5337 | /* If the output section of a section in the input segment is NULL, |
5338 | it is removed from the corresponding output segment. */ | |
5339 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5340 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5341 | && section->output_section != NULL) | |
5342 | ||
b34976b6 | 5343 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5344 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5345 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5346 | ||
5347 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5348 | their VMA address ranges and their LMA address ranges overlap. | |
5349 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5350 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5351 | to the same VMA range, but with the .data section mapped to a different | |
5352 | LMA. */ | |
aecc8f8a | 5353 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5354 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5355 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5356 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5357 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5358 | |
5359 | /* Initialise the segment mark field. */ | |
5360 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5361 | section->segment_mark = FALSE; |
bc67d8a6 | 5362 | |
252b5132 | 5363 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5364 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5365 | in the loadable segments. These can be created by weird |
aecc8f8a | 5366 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5367 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5368 | i < num_segments; | |
c044fabd | 5369 | i++, segment++) |
252b5132 | 5370 | { |
252b5132 | 5371 | unsigned int j; |
c044fabd | 5372 | Elf_Internal_Phdr *segment2; |
252b5132 | 5373 | |
aecc8f8a AM |
5374 | if (segment->p_type == PT_INTERP) |
5375 | for (section = ibfd->sections; section; section = section->next) | |
5376 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5377 | { | |
5378 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5379 | assignment code will work. */ |
aecc8f8a AM |
5380 | segment->p_vaddr = section->vma; |
5381 | break; | |
5382 | } | |
5383 | ||
bc67d8a6 NC |
5384 | if (segment->p_type != PT_LOAD) |
5385 | continue; | |
c044fabd | 5386 | |
bc67d8a6 | 5387 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5388 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5389 | { |
5390 | bfd_signed_vma extra_length; | |
c044fabd | 5391 | |
bc67d8a6 NC |
5392 | if (segment2->p_type != PT_LOAD |
5393 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5394 | continue; | |
c044fabd | 5395 | |
bc67d8a6 NC |
5396 | /* Merge the two segments together. */ |
5397 | if (segment2->p_vaddr < segment->p_vaddr) | |
5398 | { | |
c044fabd KH |
5399 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5400 | SEGMENT. */ | |
bc67d8a6 NC |
5401 | extra_length = |
5402 | SEGMENT_END (segment, segment->p_vaddr) | |
5403 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5404 | |
bc67d8a6 NC |
5405 | if (extra_length > 0) |
5406 | { | |
5407 | segment2->p_memsz += extra_length; | |
5408 | segment2->p_filesz += extra_length; | |
5409 | } | |
c044fabd | 5410 | |
bc67d8a6 | 5411 | segment->p_type = PT_NULL; |
c044fabd | 5412 | |
bc67d8a6 NC |
5413 | /* Since we have deleted P we must restart the outer loop. */ |
5414 | i = 0; | |
5415 | segment = elf_tdata (ibfd)->phdr; | |
5416 | break; | |
5417 | } | |
5418 | else | |
5419 | { | |
c044fabd KH |
5420 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5421 | SEGMENT2. */ | |
bc67d8a6 NC |
5422 | extra_length = |
5423 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5424 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5425 | |
bc67d8a6 NC |
5426 | if (extra_length > 0) |
5427 | { | |
5428 | segment->p_memsz += extra_length; | |
5429 | segment->p_filesz += extra_length; | |
5430 | } | |
c044fabd | 5431 | |
bc67d8a6 NC |
5432 | segment2->p_type = PT_NULL; |
5433 | } | |
5434 | } | |
5435 | } | |
c044fabd | 5436 | |
bc67d8a6 NC |
5437 | /* The second scan attempts to assign sections to segments. */ |
5438 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5439 | i < num_segments; | |
5440 | i ++, segment ++) | |
5441 | { | |
5442 | unsigned int section_count; | |
5443 | asection ** sections; | |
5444 | asection * output_section; | |
5445 | unsigned int isec; | |
5446 | bfd_vma matching_lma; | |
5447 | bfd_vma suggested_lma; | |
5448 | unsigned int j; | |
dc810e39 | 5449 | bfd_size_type amt; |
9f17e2a6 | 5450 | asection * first_section; |
bc67d8a6 NC |
5451 | |
5452 | if (segment->p_type == PT_NULL) | |
5453 | continue; | |
c044fabd | 5454 | |
9f17e2a6 | 5455 | first_section = NULL; |
bc67d8a6 | 5456 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5457 | for (section = ibfd->sections, section_count = 0; |
5458 | section != NULL; | |
5459 | section = section->next) | |
9f17e2a6 L |
5460 | { |
5461 | /* Find the first section in the input segment, which may be | |
5462 | removed from the corresponding output segment. */ | |
5463 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5464 | { | |
5465 | if (first_section == NULL) | |
5466 | first_section = section; | |
5467 | if (section->output_section != NULL) | |
5468 | ++section_count; | |
5469 | } | |
5470 | } | |
811072d8 | 5471 | |
b5f852ea NC |
5472 | /* Allocate a segment map big enough to contain |
5473 | all of the sections we have selected. */ | |
dc810e39 AM |
5474 | amt = sizeof (struct elf_segment_map); |
5475 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5476 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5477 | if (map == NULL) |
b34976b6 | 5478 | return FALSE; |
252b5132 RH |
5479 | |
5480 | /* Initialise the fields of the segment map. Default to | |
5481 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5482 | map->next = NULL; |
5483 | map->p_type = segment->p_type; | |
5484 | map->p_flags = segment->p_flags; | |
5485 | map->p_flags_valid = 1; | |
55d55ac7 | 5486 | |
9f17e2a6 L |
5487 | /* If the first section in the input segment is removed, there is |
5488 | no need to preserve segment physical address in the corresponding | |
5489 | output segment. */ | |
945c025a | 5490 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5491 | { |
5492 | map->p_paddr = segment->p_paddr; | |
5493 | map->p_paddr_valid = 1; | |
5494 | } | |
252b5132 RH |
5495 | |
5496 | /* Determine if this segment contains the ELF file header | |
5497 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5498 | map->includes_filehdr = (segment->p_offset == 0 |
5499 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5500 | |
bc67d8a6 | 5501 | map->includes_phdrs = 0; |
252b5132 | 5502 | |
bc67d8a6 | 5503 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5504 | { |
bc67d8a6 NC |
5505 | map->includes_phdrs = |
5506 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5507 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5508 | >= ((bfd_vma) iehdr->e_phoff |
5509 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5510 | |
bc67d8a6 | 5511 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5512 | phdr_included = TRUE; |
252b5132 RH |
5513 | } |
5514 | ||
bc67d8a6 | 5515 | if (section_count == 0) |
252b5132 RH |
5516 | { |
5517 | /* Special segments, such as the PT_PHDR segment, may contain | |
5518 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5519 | something. They are allowed by the ELF spec however, so only |
5520 | a warning is produced. */ | |
bc67d8a6 | 5521 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5522 | (*_bfd_error_handler) |
d003868e AM |
5523 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5524 | ibfd); | |
252b5132 | 5525 | |
bc67d8a6 | 5526 | map->count = 0; |
c044fabd KH |
5527 | *pointer_to_map = map; |
5528 | pointer_to_map = &map->next; | |
252b5132 RH |
5529 | |
5530 | continue; | |
5531 | } | |
5532 | ||
5533 | /* Now scan the sections in the input BFD again and attempt | |
5534 | to add their corresponding output sections to the segment map. | |
5535 | The problem here is how to handle an output section which has | |
5536 | been moved (ie had its LMA changed). There are four possibilities: | |
5537 | ||
5538 | 1. None of the sections have been moved. | |
5539 | In this case we can continue to use the segment LMA from the | |
5540 | input BFD. | |
5541 | ||
5542 | 2. All of the sections have been moved by the same amount. | |
5543 | In this case we can change the segment's LMA to match the LMA | |
5544 | of the first section. | |
5545 | ||
5546 | 3. Some of the sections have been moved, others have not. | |
5547 | In this case those sections which have not been moved can be | |
5548 | placed in the current segment which will have to have its size, | |
5549 | and possibly its LMA changed, and a new segment or segments will | |
5550 | have to be created to contain the other sections. | |
5551 | ||
b5f852ea | 5552 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5553 | In this case we can change the segment's LMA to match the LMA |
5554 | of the first section and we will have to create a new segment | |
5555 | or segments to contain the other sections. | |
5556 | ||
5557 | In order to save time, we allocate an array to hold the section | |
5558 | pointers that we are interested in. As these sections get assigned | |
5559 | to a segment, they are removed from this array. */ | |
5560 | ||
0b14c2aa L |
5561 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5562 | to work around this long long bug. */ | |
d0fb9a8d | 5563 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5564 | if (sections == NULL) |
b34976b6 | 5565 | return FALSE; |
252b5132 RH |
5566 | |
5567 | /* Step One: Scan for segment vs section LMA conflicts. | |
5568 | Also add the sections to the section array allocated above. | |
5569 | Also add the sections to the current segment. In the common | |
5570 | case, where the sections have not been moved, this means that | |
5571 | we have completely filled the segment, and there is nothing | |
5572 | more to do. */ | |
252b5132 | 5573 | isec = 0; |
72730e0c | 5574 | matching_lma = 0; |
252b5132 RH |
5575 | suggested_lma = 0; |
5576 | ||
bc67d8a6 NC |
5577 | for (j = 0, section = ibfd->sections; |
5578 | section != NULL; | |
5579 | section = section->next) | |
252b5132 | 5580 | { |
caf47ea6 | 5581 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5582 | { |
bc67d8a6 NC |
5583 | output_section = section->output_section; |
5584 | ||
5585 | sections[j ++] = section; | |
252b5132 RH |
5586 | |
5587 | /* The Solaris native linker always sets p_paddr to 0. | |
5588 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5589 | correct value. Note - some backends require that |
5590 | p_paddr be left as zero. */ | |
bc67d8a6 | 5591 | if (segment->p_paddr == 0 |
4455705d | 5592 | && segment->p_vaddr != 0 |
5e8d7549 | 5593 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5594 | && isec == 0 |
bc67d8a6 NC |
5595 | && output_section->lma != 0 |
5596 | && (output_section->vma == (segment->p_vaddr | |
5597 | + (map->includes_filehdr | |
5598 | ? iehdr->e_ehsize | |
5599 | : 0) | |
5600 | + (map->includes_phdrs | |
079e9a2f AM |
5601 | ? (iehdr->e_phnum |
5602 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5603 | : 0)))) |
5604 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5605 | |
5606 | /* Match up the physical address of the segment with the | |
5607 | LMA address of the output section. */ | |
bc67d8a6 | 5608 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5609 | || IS_COREFILE_NOTE (segment, section) |
5610 | || (bed->want_p_paddr_set_to_zero && | |
5611 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5612 | ) | |
252b5132 RH |
5613 | { |
5614 | if (matching_lma == 0) | |
bc67d8a6 | 5615 | matching_lma = output_section->lma; |
252b5132 RH |
5616 | |
5617 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5618 | then it does not overlap any other section within that |
252b5132 | 5619 | segment. */ |
bc67d8a6 | 5620 | map->sections[isec ++] = output_section; |
252b5132 RH |
5621 | } |
5622 | else if (suggested_lma == 0) | |
bc67d8a6 | 5623 | suggested_lma = output_section->lma; |
252b5132 RH |
5624 | } |
5625 | } | |
5626 | ||
bc67d8a6 | 5627 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5628 | |
5629 | /* Step Two: Adjust the physical address of the current segment, | |
5630 | if necessary. */ | |
bc67d8a6 | 5631 | if (isec == section_count) |
252b5132 RH |
5632 | { |
5633 | /* All of the sections fitted within the segment as currently | |
5634 | specified. This is the default case. Add the segment to | |
5635 | the list of built segments and carry on to process the next | |
5636 | program header in the input BFD. */ | |
bc67d8a6 | 5637 | map->count = section_count; |
c044fabd KH |
5638 | *pointer_to_map = map; |
5639 | pointer_to_map = &map->next; | |
3271a814 NS |
5640 | |
5641 | if (matching_lma != map->p_paddr | |
5642 | && !map->includes_filehdr && !map->includes_phdrs) | |
5643 | /* There is some padding before the first section in the | |
5644 | segment. So, we must account for that in the output | |
5645 | segment's vma. */ | |
5646 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
5647 | ||
252b5132 RH |
5648 | free (sections); |
5649 | continue; | |
5650 | } | |
252b5132 RH |
5651 | else |
5652 | { | |
72730e0c AM |
5653 | if (matching_lma != 0) |
5654 | { | |
5655 | /* At least one section fits inside the current segment. | |
5656 | Keep it, but modify its physical address to match the | |
5657 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5658 | map->p_paddr = matching_lma; |
72730e0c AM |
5659 | } |
5660 | else | |
5661 | { | |
5662 | /* None of the sections fitted inside the current segment. | |
5663 | Change the current segment's physical address to match | |
5664 | the LMA of the first section. */ | |
bc67d8a6 | 5665 | map->p_paddr = suggested_lma; |
72730e0c AM |
5666 | } |
5667 | ||
bc67d8a6 NC |
5668 | /* Offset the segment physical address from the lma |
5669 | to allow for space taken up by elf headers. */ | |
5670 | if (map->includes_filehdr) | |
5671 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5672 | |
bc67d8a6 NC |
5673 | if (map->includes_phdrs) |
5674 | { | |
5675 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5676 | ||
5677 | /* iehdr->e_phnum is just an estimate of the number | |
5678 | of program headers that we will need. Make a note | |
5679 | here of the number we used and the segment we chose | |
5680 | to hold these headers, so that we can adjust the | |
5681 | offset when we know the correct value. */ | |
5682 | phdr_adjust_num = iehdr->e_phnum; | |
5683 | phdr_adjust_seg = map; | |
5684 | } | |
252b5132 RH |
5685 | } |
5686 | ||
5687 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5688 | those that fit to the current segment and removing them from the |
252b5132 RH |
5689 | sections array; but making sure not to leave large gaps. Once all |
5690 | possible sections have been assigned to the current segment it is | |
5691 | added to the list of built segments and if sections still remain | |
5692 | to be assigned, a new segment is constructed before repeating | |
5693 | the loop. */ | |
5694 | isec = 0; | |
5695 | do | |
5696 | { | |
bc67d8a6 | 5697 | map->count = 0; |
252b5132 RH |
5698 | suggested_lma = 0; |
5699 | ||
5700 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5701 | for (j = 0; j < section_count; j++) |
252b5132 | 5702 | { |
bc67d8a6 | 5703 | section = sections[j]; |
252b5132 | 5704 | |
bc67d8a6 | 5705 | if (section == NULL) |
252b5132 RH |
5706 | continue; |
5707 | ||
bc67d8a6 | 5708 | output_section = section->output_section; |
252b5132 | 5709 | |
bc67d8a6 | 5710 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5711 | |
bc67d8a6 NC |
5712 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5713 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5714 | { |
bc67d8a6 | 5715 | if (map->count == 0) |
252b5132 RH |
5716 | { |
5717 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5718 | the beginning of the segment, then something is |
5719 | wrong. */ | |
5720 | if (output_section->lma != | |
5721 | (map->p_paddr | |
5722 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5723 | + (map->includes_phdrs | |
5724 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5725 | : 0))) | |
252b5132 RH |
5726 | abort (); |
5727 | } | |
5728 | else | |
5729 | { | |
5730 | asection * prev_sec; | |
252b5132 | 5731 | |
bc67d8a6 | 5732 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5733 | |
5734 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5735 | and the start of this section is more than |
5736 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5737 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5738 | maxpagesize) |
caf47ea6 | 5739 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5740 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5741 | > output_section->lma)) |
252b5132 RH |
5742 | { |
5743 | if (suggested_lma == 0) | |
bc67d8a6 | 5744 | suggested_lma = output_section->lma; |
252b5132 RH |
5745 | |
5746 | continue; | |
5747 | } | |
5748 | } | |
5749 | ||
bc67d8a6 | 5750 | map->sections[map->count++] = output_section; |
252b5132 RH |
5751 | ++isec; |
5752 | sections[j] = NULL; | |
b34976b6 | 5753 | section->segment_mark = TRUE; |
252b5132 RH |
5754 | } |
5755 | else if (suggested_lma == 0) | |
bc67d8a6 | 5756 | suggested_lma = output_section->lma; |
252b5132 RH |
5757 | } |
5758 | ||
bc67d8a6 | 5759 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5760 | |
5761 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5762 | *pointer_to_map = map; |
5763 | pointer_to_map = &map->next; | |
252b5132 | 5764 | |
bc67d8a6 | 5765 | if (isec < section_count) |
252b5132 RH |
5766 | { |
5767 | /* We still have not allocated all of the sections to | |
5768 | segments. Create a new segment here, initialise it | |
5769 | and carry on looping. */ | |
dc810e39 AM |
5770 | amt = sizeof (struct elf_segment_map); |
5771 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5772 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5773 | if (map == NULL) |
5ed6aba4 NC |
5774 | { |
5775 | free (sections); | |
5776 | return FALSE; | |
5777 | } | |
252b5132 RH |
5778 | |
5779 | /* Initialise the fields of the segment map. Set the physical | |
5780 | physical address to the LMA of the first section that has | |
5781 | not yet been assigned. */ | |
bc67d8a6 NC |
5782 | map->next = NULL; |
5783 | map->p_type = segment->p_type; | |
5784 | map->p_flags = segment->p_flags; | |
5785 | map->p_flags_valid = 1; | |
5786 | map->p_paddr = suggested_lma; | |
5787 | map->p_paddr_valid = 1; | |
5788 | map->includes_filehdr = 0; | |
5789 | map->includes_phdrs = 0; | |
252b5132 RH |
5790 | } |
5791 | } | |
bc67d8a6 | 5792 | while (isec < section_count); |
252b5132 RH |
5793 | |
5794 | free (sections); | |
5795 | } | |
5796 | ||
5797 | /* The Solaris linker creates program headers in which all the | |
5798 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5799 | file, we get confused. Check for this case, and if we find it | |
5800 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5801 | for (map = map_first; map != NULL; map = map->next) |
5802 | if (map->p_paddr != 0) | |
252b5132 | 5803 | break; |
bc67d8a6 | 5804 | if (map == NULL) |
b5f852ea NC |
5805 | for (map = map_first; map != NULL; map = map->next) |
5806 | map->p_paddr_valid = 0; | |
252b5132 | 5807 | |
bc67d8a6 NC |
5808 | elf_tdata (obfd)->segment_map = map_first; |
5809 | ||
5810 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5811 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5812 | the offset if necessary. */ |
5813 | if (phdr_adjust_seg != NULL) | |
5814 | { | |
5815 | unsigned int count; | |
c044fabd | 5816 | |
bc67d8a6 | 5817 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5818 | count++; |
252b5132 | 5819 | |
bc67d8a6 NC |
5820 | if (count > phdr_adjust_num) |
5821 | phdr_adjust_seg->p_paddr | |
5822 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5823 | } | |
c044fabd | 5824 | |
bc67d8a6 | 5825 | #undef SEGMENT_END |
eecdbe52 | 5826 | #undef SECTION_SIZE |
bc67d8a6 NC |
5827 | #undef IS_CONTAINED_BY_VMA |
5828 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5829 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5830 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5831 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5832 | #undef INCLUDE_SECTION_IN_SEGMENT |
5833 | #undef SEGMENT_AFTER_SEGMENT | |
5834 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5835 | return TRUE; |
252b5132 RH |
5836 | } |
5837 | ||
84d1d650 L |
5838 | /* Copy ELF program header information. */ |
5839 | ||
5840 | static bfd_boolean | |
5841 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5842 | { | |
5843 | Elf_Internal_Ehdr *iehdr; | |
5844 | struct elf_segment_map *map; | |
5845 | struct elf_segment_map *map_first; | |
5846 | struct elf_segment_map **pointer_to_map; | |
5847 | Elf_Internal_Phdr *segment; | |
5848 | unsigned int i; | |
5849 | unsigned int num_segments; | |
5850 | bfd_boolean phdr_included = FALSE; | |
5851 | ||
5852 | iehdr = elf_elfheader (ibfd); | |
5853 | ||
5854 | map_first = NULL; | |
5855 | pointer_to_map = &map_first; | |
5856 | ||
5857 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5858 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5859 | i < num_segments; | |
5860 | i++, segment++) | |
5861 | { | |
5862 | asection *section; | |
5863 | unsigned int section_count; | |
5864 | bfd_size_type amt; | |
5865 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5866 | asection *first_section = NULL; |
84d1d650 L |
5867 | |
5868 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5869 | if (segment->p_type == PT_NULL) | |
5870 | continue; | |
5871 | ||
5872 | /* Compute how many sections are in this segment. */ | |
5873 | for (section = ibfd->sections, section_count = 0; | |
5874 | section != NULL; | |
5875 | section = section->next) | |
5876 | { | |
5877 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5878 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5879 | { |
53020534 L |
5880 | if (!first_section) |
5881 | first_section = section; | |
3271a814 NS |
5882 | section_count++; |
5883 | } | |
84d1d650 L |
5884 | } |
5885 | ||
5886 | /* Allocate a segment map big enough to contain | |
5887 | all of the sections we have selected. */ | |
5888 | amt = sizeof (struct elf_segment_map); | |
5889 | if (section_count != 0) | |
5890 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5891 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5892 | if (map == NULL) |
5893 | return FALSE; | |
5894 | ||
5895 | /* Initialize the fields of the output segment map with the | |
5896 | input segment. */ | |
5897 | map->next = NULL; | |
5898 | map->p_type = segment->p_type; | |
5899 | map->p_flags = segment->p_flags; | |
5900 | map->p_flags_valid = 1; | |
5901 | map->p_paddr = segment->p_paddr; | |
5902 | map->p_paddr_valid = 1; | |
3f570048 AM |
5903 | map->p_align = segment->p_align; |
5904 | map->p_align_valid = 1; | |
3271a814 | 5905 | map->p_vaddr_offset = 0; |
84d1d650 L |
5906 | |
5907 | /* Determine if this segment contains the ELF file header | |
5908 | and if it contains the program headers themselves. */ | |
5909 | map->includes_filehdr = (segment->p_offset == 0 | |
5910 | && segment->p_filesz >= iehdr->e_ehsize); | |
5911 | ||
5912 | map->includes_phdrs = 0; | |
5913 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5914 | { | |
5915 | map->includes_phdrs = | |
5916 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5917 | && (segment->p_offset + segment->p_filesz | |
5918 | >= ((bfd_vma) iehdr->e_phoff | |
5919 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5920 | ||
5921 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5922 | phdr_included = TRUE; | |
5923 | } | |
5924 | ||
3271a814 NS |
5925 | if (!map->includes_phdrs && !map->includes_filehdr) |
5926 | /* There is some other padding before the first section. */ | |
53020534 L |
5927 | map->p_vaddr_offset = ((first_section ? first_section->lma : 0) |
5928 | - segment->p_paddr); | |
3271a814 | 5929 | |
84d1d650 L |
5930 | if (section_count != 0) |
5931 | { | |
5932 | unsigned int isec = 0; | |
5933 | ||
53020534 | 5934 | for (section = first_section; |
84d1d650 L |
5935 | section != NULL; |
5936 | section = section->next) | |
5937 | { | |
5938 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5939 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5940 | { |
5941 | map->sections[isec++] = section->output_section; | |
5942 | if (isec == section_count) | |
5943 | break; | |
5944 | } | |
84d1d650 L |
5945 | } |
5946 | } | |
5947 | ||
5948 | map->count = section_count; | |
5949 | *pointer_to_map = map; | |
5950 | pointer_to_map = &map->next; | |
5951 | } | |
5952 | ||
5953 | elf_tdata (obfd)->segment_map = map_first; | |
5954 | return TRUE; | |
5955 | } | |
5956 | ||
5957 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5958 | information. */ | |
5959 | ||
5960 | static bfd_boolean | |
5961 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5962 | { | |
84d1d650 L |
5963 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5964 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5965 | return TRUE; | |
5966 | ||
5967 | if (elf_tdata (ibfd)->phdr == NULL) | |
5968 | return TRUE; | |
5969 | ||
5970 | if (ibfd->xvec == obfd->xvec) | |
5971 | { | |
cb3ff1e5 NC |
5972 | /* Check to see if any sections in the input BFD |
5973 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5974 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5975 | asection *section, *osec; |
5976 | unsigned int i, num_segments; | |
5977 | Elf_Internal_Shdr *this_hdr; | |
5978 | ||
5979 | /* Initialize the segment mark field. */ | |
5980 | for (section = obfd->sections; section != NULL; | |
5981 | section = section->next) | |
5982 | section->segment_mark = FALSE; | |
5983 | ||
5984 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5985 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5986 | i < num_segments; | |
5987 | i++, segment++) | |
5988 | { | |
5f6999aa NC |
5989 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5990 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5991 | which severly confuses things, so always regenerate the segment | |
5992 | map in this case. */ | |
5993 | if (segment->p_paddr == 0 | |
5994 | && segment->p_memsz == 0 | |
5995 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5996 | goto rewrite; |
5f6999aa | 5997 | |
84d1d650 L |
5998 | for (section = ibfd->sections; |
5999 | section != NULL; section = section->next) | |
6000 | { | |
6001 | /* We mark the output section so that we know it comes | |
6002 | from the input BFD. */ | |
6003 | osec = section->output_section; | |
6004 | if (osec) | |
6005 | osec->segment_mark = TRUE; | |
6006 | ||
6007 | /* Check if this section is covered by the segment. */ | |
6008 | this_hdr = &(elf_section_data(section)->this_hdr); | |
6009 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
6010 | { | |
6011 | /* FIXME: Check if its output section is changed or | |
6012 | removed. What else do we need to check? */ | |
6013 | if (osec == NULL | |
6014 | || section->flags != osec->flags | |
6015 | || section->lma != osec->lma | |
6016 | || section->vma != osec->vma | |
6017 | || section->size != osec->size | |
6018 | || section->rawsize != osec->rawsize | |
6019 | || section->alignment_power != osec->alignment_power) | |
6020 | goto rewrite; | |
6021 | } | |
6022 | } | |
6023 | } | |
6024 | ||
cb3ff1e5 | 6025 | /* Check to see if any output section do not come from the |
84d1d650 L |
6026 | input BFD. */ |
6027 | for (section = obfd->sections; section != NULL; | |
6028 | section = section->next) | |
6029 | { | |
6030 | if (section->segment_mark == FALSE) | |
6031 | goto rewrite; | |
6032 | else | |
6033 | section->segment_mark = FALSE; | |
6034 | } | |
6035 | ||
6036 | return copy_elf_program_header (ibfd, obfd); | |
6037 | } | |
6038 | ||
6039 | rewrite: | |
6040 | return rewrite_elf_program_header (ibfd, obfd); | |
6041 | } | |
6042 | ||
ccd2ec6a L |
6043 | /* Initialize private output section information from input section. */ |
6044 | ||
6045 | bfd_boolean | |
6046 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
6047 | asection *isec, | |
6048 | bfd *obfd, | |
6049 | asection *osec, | |
6050 | struct bfd_link_info *link_info) | |
6051 | ||
6052 | { | |
6053 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6054 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
6055 | ||
6056 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6057 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
6058 | return TRUE; | |
6059 | ||
e843e0f8 | 6060 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 6061 | output BFD section flags have been set to something different. |
e843e0f8 L |
6062 | elf_fake_sections will set ELF section type based on BFD |
6063 | section flags. */ | |
42bb2e33 AM |
6064 | if (elf_section_type (osec) == SHT_NULL |
6065 | && (osec->flags == isec->flags || !osec->flags)) | |
6066 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
6067 | |
6068 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
6069 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
6070 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
6071 | |
6072 | /* Set things up for objcopy and relocatable link. The output | |
6073 | SHT_GROUP section will have its elf_next_in_group pointing back | |
6074 | to the input group members. Ignore linker created group section. | |
6075 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
6076 | if (need_group) |
6077 | { | |
6078 | if (elf_sec_group (isec) == NULL | |
6079 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
6080 | { | |
6081 | if (elf_section_flags (isec) & SHF_GROUP) | |
6082 | elf_section_flags (osec) |= SHF_GROUP; | |
6083 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
6084 | elf_group_name (osec) = elf_group_name (isec); | |
6085 | } | |
6086 | } | |
6087 | ||
6088 | ihdr = &elf_section_data (isec)->this_hdr; | |
6089 | ||
6090 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
6091 | don't use the output section of the linked-to section since it | |
6092 | may be NULL at this point. */ | |
6093 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
6094 | { | |
6095 | ohdr = &elf_section_data (osec)->this_hdr; | |
6096 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
6097 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
6098 | } | |
6099 | ||
6100 | osec->use_rela_p = isec->use_rela_p; | |
6101 | ||
6102 | return TRUE; | |
6103 | } | |
6104 | ||
252b5132 RH |
6105 | /* Copy private section information. This copies over the entsize |
6106 | field, and sometimes the info field. */ | |
6107 | ||
b34976b6 | 6108 | bfd_boolean |
217aa764 AM |
6109 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
6110 | asection *isec, | |
6111 | bfd *obfd, | |
6112 | asection *osec) | |
252b5132 RH |
6113 | { |
6114 | Elf_Internal_Shdr *ihdr, *ohdr; | |
6115 | ||
6116 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
6117 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 6118 | return TRUE; |
252b5132 | 6119 | |
252b5132 RH |
6120 | ihdr = &elf_section_data (isec)->this_hdr; |
6121 | ohdr = &elf_section_data (osec)->this_hdr; | |
6122 | ||
6123 | ohdr->sh_entsize = ihdr->sh_entsize; | |
6124 | ||
6125 | if (ihdr->sh_type == SHT_SYMTAB | |
6126 | || ihdr->sh_type == SHT_DYNSYM | |
6127 | || ihdr->sh_type == SHT_GNU_verneed | |
6128 | || ihdr->sh_type == SHT_GNU_verdef) | |
6129 | ohdr->sh_info = ihdr->sh_info; | |
6130 | ||
ccd2ec6a L |
6131 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
6132 | NULL); | |
252b5132 RH |
6133 | } |
6134 | ||
80fccad2 BW |
6135 | /* Copy private header information. */ |
6136 | ||
6137 | bfd_boolean | |
6138 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
6139 | { | |
30288845 AM |
6140 | asection *isec; |
6141 | ||
80fccad2 BW |
6142 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
6143 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6144 | return TRUE; | |
6145 | ||
6146 | /* Copy over private BFD data if it has not already been copied. | |
6147 | This must be done here, rather than in the copy_private_bfd_data | |
6148 | entry point, because the latter is called after the section | |
6149 | contents have been set, which means that the program headers have | |
6150 | already been worked out. */ | |
6151 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6152 | { | |
6153 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6154 | return FALSE; | |
6155 | } | |
6156 | ||
30288845 AM |
6157 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
6158 | but this might be wrong if we deleted the group section. */ | |
6159 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
6160 | if (elf_section_type (isec) == SHT_GROUP | |
6161 | && isec->output_section == NULL) | |
6162 | { | |
6163 | asection *first = elf_next_in_group (isec); | |
6164 | asection *s = first; | |
6165 | while (s != NULL) | |
6166 | { | |
6167 | if (s->output_section != NULL) | |
6168 | { | |
6169 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
6170 | elf_group_name (s->output_section) = NULL; | |
6171 | } | |
6172 | s = elf_next_in_group (s); | |
6173 | if (s == first) | |
6174 | break; | |
6175 | } | |
6176 | } | |
6177 | ||
80fccad2 BW |
6178 | return TRUE; |
6179 | } | |
6180 | ||
252b5132 RH |
6181 | /* Copy private symbol information. If this symbol is in a section |
6182 | which we did not map into a BFD section, try to map the section | |
6183 | index correctly. We use special macro definitions for the mapped | |
6184 | section indices; these definitions are interpreted by the | |
6185 | swap_out_syms function. */ | |
6186 | ||
9ad5cbcf AM |
6187 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6188 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6189 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6190 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6191 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6192 | |
b34976b6 | 6193 | bfd_boolean |
217aa764 AM |
6194 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6195 | asymbol *isymarg, | |
6196 | bfd *obfd, | |
6197 | asymbol *osymarg) | |
252b5132 RH |
6198 | { |
6199 | elf_symbol_type *isym, *osym; | |
6200 | ||
6201 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6202 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6203 | return TRUE; |
252b5132 RH |
6204 | |
6205 | isym = elf_symbol_from (ibfd, isymarg); | |
6206 | osym = elf_symbol_from (obfd, osymarg); | |
6207 | ||
6208 | if (isym != NULL | |
6209 | && osym != NULL | |
6210 | && bfd_is_abs_section (isym->symbol.section)) | |
6211 | { | |
6212 | unsigned int shndx; | |
6213 | ||
6214 | shndx = isym->internal_elf_sym.st_shndx; | |
6215 | if (shndx == elf_onesymtab (ibfd)) | |
6216 | shndx = MAP_ONESYMTAB; | |
6217 | else if (shndx == elf_dynsymtab (ibfd)) | |
6218 | shndx = MAP_DYNSYMTAB; | |
6219 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6220 | shndx = MAP_STRTAB; | |
6221 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6222 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6223 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6224 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6225 | osym->internal_elf_sym.st_shndx = shndx; |
6226 | } | |
6227 | ||
b34976b6 | 6228 | return TRUE; |
252b5132 RH |
6229 | } |
6230 | ||
6231 | /* Swap out the symbols. */ | |
6232 | ||
b34976b6 | 6233 | static bfd_boolean |
217aa764 AM |
6234 | swap_out_syms (bfd *abfd, |
6235 | struct bfd_strtab_hash **sttp, | |
6236 | int relocatable_p) | |
252b5132 | 6237 | { |
9c5bfbb7 | 6238 | const struct elf_backend_data *bed; |
079e9a2f AM |
6239 | int symcount; |
6240 | asymbol **syms; | |
6241 | struct bfd_strtab_hash *stt; | |
6242 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6243 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6244 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6245 | bfd_byte *outbound_syms; |
6246 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6247 | int idx; |
6248 | bfd_size_type amt; | |
174fd7f9 | 6249 | bfd_boolean name_local_sections; |
252b5132 RH |
6250 | |
6251 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6252 | return FALSE; |
252b5132 | 6253 | |
c044fabd | 6254 | /* Dump out the symtabs. */ |
079e9a2f AM |
6255 | stt = _bfd_elf_stringtab_init (); |
6256 | if (stt == NULL) | |
b34976b6 | 6257 | return FALSE; |
252b5132 | 6258 | |
079e9a2f AM |
6259 | bed = get_elf_backend_data (abfd); |
6260 | symcount = bfd_get_symcount (abfd); | |
6261 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6262 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6263 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6264 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6265 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6266 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6267 | |
6268 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6269 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6270 | ||
d0fb9a8d | 6271 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6272 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6273 | { |
6274 | _bfd_stringtab_free (stt); | |
6275 | return FALSE; | |
6276 | } | |
217aa764 | 6277 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6278 | |
9ad5cbcf AM |
6279 | outbound_shndx = NULL; |
6280 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6281 | if (symtab_shndx_hdr->sh_name != 0) | |
6282 | { | |
6283 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6284 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6285 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6286 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6287 | { |
6288 | _bfd_stringtab_free (stt); | |
6289 | return FALSE; | |
6290 | } | |
6291 | ||
9ad5cbcf AM |
6292 | symtab_shndx_hdr->contents = outbound_shndx; |
6293 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6294 | symtab_shndx_hdr->sh_size = amt; | |
6295 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6296 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6297 | } | |
6298 | ||
589e6347 | 6299 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6300 | { |
6301 | /* Fill in zeroth symbol and swap it out. */ | |
6302 | Elf_Internal_Sym sym; | |
6303 | sym.st_name = 0; | |
6304 | sym.st_value = 0; | |
6305 | sym.st_size = 0; | |
6306 | sym.st_info = 0; | |
6307 | sym.st_other = 0; | |
6308 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6309 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6310 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6311 | if (outbound_shndx != NULL) |
6312 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6313 | } |
252b5132 | 6314 | |
174fd7f9 RS |
6315 | name_local_sections |
6316 | = (bed->elf_backend_name_local_section_symbols | |
6317 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6318 | ||
079e9a2f AM |
6319 | syms = bfd_get_outsymbols (abfd); |
6320 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6321 | { |
252b5132 | 6322 | Elf_Internal_Sym sym; |
079e9a2f AM |
6323 | bfd_vma value = syms[idx]->value; |
6324 | elf_symbol_type *type_ptr; | |
6325 | flagword flags = syms[idx]->flags; | |
6326 | int type; | |
252b5132 | 6327 | |
174fd7f9 RS |
6328 | if (!name_local_sections |
6329 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6330 | { |
6331 | /* Local section symbols have no name. */ | |
6332 | sym.st_name = 0; | |
6333 | } | |
6334 | else | |
6335 | { | |
6336 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6337 | syms[idx]->name, | |
b34976b6 | 6338 | TRUE, FALSE); |
079e9a2f | 6339 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6340 | { |
6341 | _bfd_stringtab_free (stt); | |
6342 | return FALSE; | |
6343 | } | |
079e9a2f | 6344 | } |
252b5132 | 6345 | |
079e9a2f | 6346 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6347 | |
079e9a2f AM |
6348 | if ((flags & BSF_SECTION_SYM) == 0 |
6349 | && bfd_is_com_section (syms[idx]->section)) | |
6350 | { | |
6351 | /* ELF common symbols put the alignment into the `value' field, | |
6352 | and the size into the `size' field. This is backwards from | |
6353 | how BFD handles it, so reverse it here. */ | |
6354 | sym.st_size = value; | |
6355 | if (type_ptr == NULL | |
6356 | || type_ptr->internal_elf_sym.st_value == 0) | |
6357 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6358 | else | |
6359 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6360 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6361 | (abfd, syms[idx]->section); | |
6362 | } | |
6363 | else | |
6364 | { | |
6365 | asection *sec = syms[idx]->section; | |
6366 | int shndx; | |
252b5132 | 6367 | |
079e9a2f AM |
6368 | if (sec->output_section) |
6369 | { | |
6370 | value += sec->output_offset; | |
6371 | sec = sec->output_section; | |
6372 | } | |
589e6347 | 6373 | |
079e9a2f AM |
6374 | /* Don't add in the section vma for relocatable output. */ |
6375 | if (! relocatable_p) | |
6376 | value += sec->vma; | |
6377 | sym.st_value = value; | |
6378 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6379 | ||
6380 | if (bfd_is_abs_section (sec) | |
6381 | && type_ptr != NULL | |
6382 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6383 | { | |
6384 | /* This symbol is in a real ELF section which we did | |
6385 | not create as a BFD section. Undo the mapping done | |
6386 | by copy_private_symbol_data. */ | |
6387 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6388 | switch (shndx) | |
6389 | { | |
6390 | case MAP_ONESYMTAB: | |
6391 | shndx = elf_onesymtab (abfd); | |
6392 | break; | |
6393 | case MAP_DYNSYMTAB: | |
6394 | shndx = elf_dynsymtab (abfd); | |
6395 | break; | |
6396 | case MAP_STRTAB: | |
6397 | shndx = elf_tdata (abfd)->strtab_section; | |
6398 | break; | |
6399 | case MAP_SHSTRTAB: | |
6400 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6401 | break; | |
9ad5cbcf AM |
6402 | case MAP_SYM_SHNDX: |
6403 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6404 | break; | |
079e9a2f AM |
6405 | default: |
6406 | break; | |
6407 | } | |
6408 | } | |
6409 | else | |
6410 | { | |
6411 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6412 | |
079e9a2f AM |
6413 | if (shndx == -1) |
6414 | { | |
6415 | asection *sec2; | |
6416 | ||
6417 | /* Writing this would be a hell of a lot easier if | |
6418 | we had some decent documentation on bfd, and | |
6419 | knew what to expect of the library, and what to | |
6420 | demand of applications. For example, it | |
6421 | appears that `objcopy' might not set the | |
6422 | section of a symbol to be a section that is | |
6423 | actually in the output file. */ | |
6424 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6425 | if (sec2 == NULL) |
6426 | { | |
6427 | _bfd_error_handler (_("\ | |
6428 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6429 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6430 | sec->name); | |
811072d8 | 6431 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6432 | _bfd_stringtab_free (stt); |
589e6347 NC |
6433 | return FALSE; |
6434 | } | |
811072d8 | 6435 | |
079e9a2f AM |
6436 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6437 | BFD_ASSERT (shndx != -1); | |
6438 | } | |
6439 | } | |
252b5132 | 6440 | |
079e9a2f AM |
6441 | sym.st_shndx = shndx; |
6442 | } | |
252b5132 | 6443 | |
13ae64f3 JJ |
6444 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6445 | type = STT_TLS; | |
6446 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6447 | type = STT_FUNC; |
6448 | else if ((flags & BSF_OBJECT) != 0) | |
6449 | type = STT_OBJECT; | |
d9352518 DB |
6450 | else if ((flags & BSF_RELC) != 0) |
6451 | type = STT_RELC; | |
6452 | else if ((flags & BSF_SRELC) != 0) | |
6453 | type = STT_SRELC; | |
079e9a2f AM |
6454 | else |
6455 | type = STT_NOTYPE; | |
252b5132 | 6456 | |
13ae64f3 JJ |
6457 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6458 | type = STT_TLS; | |
6459 | ||
589e6347 | 6460 | /* Processor-specific types. */ |
079e9a2f AM |
6461 | if (type_ptr != NULL |
6462 | && bed->elf_backend_get_symbol_type) | |
6463 | type = ((*bed->elf_backend_get_symbol_type) | |
6464 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6465 | |
079e9a2f AM |
6466 | if (flags & BSF_SECTION_SYM) |
6467 | { | |
6468 | if (flags & BSF_GLOBAL) | |
6469 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6470 | else | |
6471 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6472 | } | |
6473 | else if (bfd_is_com_section (syms[idx]->section)) | |
6474 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6475 | else if (bfd_is_und_section (syms[idx]->section)) | |
6476 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6477 | ? STB_WEAK | |
6478 | : STB_GLOBAL), | |
6479 | type); | |
6480 | else if (flags & BSF_FILE) | |
6481 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6482 | else | |
6483 | { | |
6484 | int bind = STB_LOCAL; | |
252b5132 | 6485 | |
079e9a2f AM |
6486 | if (flags & BSF_LOCAL) |
6487 | bind = STB_LOCAL; | |
6488 | else if (flags & BSF_WEAK) | |
6489 | bind = STB_WEAK; | |
6490 | else if (flags & BSF_GLOBAL) | |
6491 | bind = STB_GLOBAL; | |
252b5132 | 6492 | |
079e9a2f AM |
6493 | sym.st_info = ELF_ST_INFO (bind, type); |
6494 | } | |
252b5132 | 6495 | |
079e9a2f AM |
6496 | if (type_ptr != NULL) |
6497 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6498 | else | |
6499 | sym.st_other = 0; | |
252b5132 | 6500 | |
9ad5cbcf | 6501 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6502 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6503 | if (outbound_shndx != NULL) |
6504 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6505 | } |
252b5132 | 6506 | |
079e9a2f AM |
6507 | *sttp = stt; |
6508 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6509 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6510 | |
079e9a2f AM |
6511 | symstrtab_hdr->sh_flags = 0; |
6512 | symstrtab_hdr->sh_addr = 0; | |
6513 | symstrtab_hdr->sh_entsize = 0; | |
6514 | symstrtab_hdr->sh_link = 0; | |
6515 | symstrtab_hdr->sh_info = 0; | |
6516 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6517 | |
b34976b6 | 6518 | return TRUE; |
252b5132 RH |
6519 | } |
6520 | ||
6521 | /* Return the number of bytes required to hold the symtab vector. | |
6522 | ||
6523 | Note that we base it on the count plus 1, since we will null terminate | |
6524 | the vector allocated based on this size. However, the ELF symbol table | |
6525 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6526 | ||
6527 | long | |
217aa764 | 6528 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6529 | { |
6530 | long symcount; | |
6531 | long symtab_size; | |
6532 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6533 | ||
6534 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6535 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6536 | if (symcount > 0) | |
6537 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6538 | |
6539 | return symtab_size; | |
6540 | } | |
6541 | ||
6542 | long | |
217aa764 | 6543 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6544 | { |
6545 | long symcount; | |
6546 | long symtab_size; | |
6547 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6548 | ||
6549 | if (elf_dynsymtab (abfd) == 0) | |
6550 | { | |
6551 | bfd_set_error (bfd_error_invalid_operation); | |
6552 | return -1; | |
6553 | } | |
6554 | ||
6555 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6556 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6557 | if (symcount > 0) | |
6558 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6559 | |
6560 | return symtab_size; | |
6561 | } | |
6562 | ||
6563 | long | |
217aa764 AM |
6564 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6565 | sec_ptr asect) | |
252b5132 RH |
6566 | { |
6567 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6568 | } | |
6569 | ||
6570 | /* Canonicalize the relocs. */ | |
6571 | ||
6572 | long | |
217aa764 AM |
6573 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6574 | sec_ptr section, | |
6575 | arelent **relptr, | |
6576 | asymbol **symbols) | |
252b5132 RH |
6577 | { |
6578 | arelent *tblptr; | |
6579 | unsigned int i; | |
9c5bfbb7 | 6580 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6581 | |
b34976b6 | 6582 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6583 | return -1; |
6584 | ||
6585 | tblptr = section->relocation; | |
6586 | for (i = 0; i < section->reloc_count; i++) | |
6587 | *relptr++ = tblptr++; | |
6588 | ||
6589 | *relptr = NULL; | |
6590 | ||
6591 | return section->reloc_count; | |
6592 | } | |
6593 | ||
6594 | long | |
6cee3f79 | 6595 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6596 | { |
9c5bfbb7 | 6597 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6598 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6599 | |
6600 | if (symcount >= 0) | |
6601 | bfd_get_symcount (abfd) = symcount; | |
6602 | return symcount; | |
6603 | } | |
6604 | ||
6605 | long | |
217aa764 AM |
6606 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6607 | asymbol **allocation) | |
252b5132 | 6608 | { |
9c5bfbb7 | 6609 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6610 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6611 | |
6612 | if (symcount >= 0) | |
6613 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6614 | return symcount; | |
252b5132 RH |
6615 | } |
6616 | ||
8615f3f2 AM |
6617 | /* Return the size required for the dynamic reloc entries. Any loadable |
6618 | section that was actually installed in the BFD, and has type SHT_REL | |
6619 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6620 | dynamic reloc section. */ | |
252b5132 RH |
6621 | |
6622 | long | |
217aa764 | 6623 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6624 | { |
6625 | long ret; | |
6626 | asection *s; | |
6627 | ||
6628 | if (elf_dynsymtab (abfd) == 0) | |
6629 | { | |
6630 | bfd_set_error (bfd_error_invalid_operation); | |
6631 | return -1; | |
6632 | } | |
6633 | ||
6634 | ret = sizeof (arelent *); | |
6635 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6636 | if ((s->flags & SEC_LOAD) != 0 |
6637 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6638 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6639 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6640 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6641 | * sizeof (arelent *)); |
6642 | ||
6643 | return ret; | |
6644 | } | |
6645 | ||
8615f3f2 AM |
6646 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6647 | dynamic relocations as a single block, although they are actually | |
6648 | associated with particular sections; the interface, which was | |
6649 | designed for SunOS style shared libraries, expects that there is only | |
6650 | one set of dynamic relocs. Any loadable section that was actually | |
6651 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6652 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6653 | |
6654 | long | |
217aa764 AM |
6655 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6656 | arelent **storage, | |
6657 | asymbol **syms) | |
252b5132 | 6658 | { |
217aa764 | 6659 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6660 | asection *s; |
6661 | long ret; | |
6662 | ||
6663 | if (elf_dynsymtab (abfd) == 0) | |
6664 | { | |
6665 | bfd_set_error (bfd_error_invalid_operation); | |
6666 | return -1; | |
6667 | } | |
6668 | ||
6669 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6670 | ret = 0; | |
6671 | for (s = abfd->sections; s != NULL; s = s->next) | |
6672 | { | |
8615f3f2 AM |
6673 | if ((s->flags & SEC_LOAD) != 0 |
6674 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6675 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6676 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6677 | { | |
6678 | arelent *p; | |
6679 | long count, i; | |
6680 | ||
b34976b6 | 6681 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6682 | return -1; |
eea6121a | 6683 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6684 | p = s->relocation; |
6685 | for (i = 0; i < count; i++) | |
6686 | *storage++ = p++; | |
6687 | ret += count; | |
6688 | } | |
6689 | } | |
6690 | ||
6691 | *storage = NULL; | |
6692 | ||
6693 | return ret; | |
6694 | } | |
6695 | \f | |
6696 | /* Read in the version information. */ | |
6697 | ||
b34976b6 | 6698 | bfd_boolean |
fc0e6df6 | 6699 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6700 | { |
6701 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6702 | unsigned int freeidx = 0; |
6703 | ||
6704 | if (elf_dynverref (abfd) != 0) | |
6705 | { | |
6706 | Elf_Internal_Shdr *hdr; | |
6707 | Elf_External_Verneed *everneed; | |
6708 | Elf_Internal_Verneed *iverneed; | |
6709 | unsigned int i; | |
d0fb9a8d | 6710 | bfd_byte *contents_end; |
fc0e6df6 PB |
6711 | |
6712 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6713 | ||
d0fb9a8d JJ |
6714 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6715 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6716 | if (elf_tdata (abfd)->verref == NULL) |
6717 | goto error_return; | |
6718 | ||
6719 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6720 | ||
6721 | contents = bfd_malloc (hdr->sh_size); | |
6722 | if (contents == NULL) | |
d0fb9a8d JJ |
6723 | { |
6724 | error_return_verref: | |
6725 | elf_tdata (abfd)->verref = NULL; | |
6726 | elf_tdata (abfd)->cverrefs = 0; | |
6727 | goto error_return; | |
6728 | } | |
fc0e6df6 PB |
6729 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6730 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6731 | goto error_return_verref; |
fc0e6df6 | 6732 | |
d0fb9a8d JJ |
6733 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6734 | goto error_return_verref; | |
6735 | ||
6736 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6737 | == sizeof (Elf_External_Vernaux)); | |
6738 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6739 | everneed = (Elf_External_Verneed *) contents; |
6740 | iverneed = elf_tdata (abfd)->verref; | |
6741 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6742 | { | |
6743 | Elf_External_Vernaux *evernaux; | |
6744 | Elf_Internal_Vernaux *ivernaux; | |
6745 | unsigned int j; | |
6746 | ||
6747 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6748 | ||
6749 | iverneed->vn_bfd = abfd; | |
6750 | ||
6751 | iverneed->vn_filename = | |
6752 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6753 | iverneed->vn_file); | |
6754 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6755 | goto error_return_verref; |
fc0e6df6 | 6756 | |
d0fb9a8d JJ |
6757 | if (iverneed->vn_cnt == 0) |
6758 | iverneed->vn_auxptr = NULL; | |
6759 | else | |
6760 | { | |
6761 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6762 | sizeof (Elf_Internal_Vernaux)); | |
6763 | if (iverneed->vn_auxptr == NULL) | |
6764 | goto error_return_verref; | |
6765 | } | |
6766 | ||
6767 | if (iverneed->vn_aux | |
6768 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6769 | goto error_return_verref; | |
fc0e6df6 PB |
6770 | |
6771 | evernaux = ((Elf_External_Vernaux *) | |
6772 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6773 | ivernaux = iverneed->vn_auxptr; | |
6774 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6775 | { | |
6776 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6777 | ||
6778 | ivernaux->vna_nodename = | |
6779 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6780 | ivernaux->vna_name); | |
6781 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6782 | goto error_return_verref; |
fc0e6df6 PB |
6783 | |
6784 | if (j + 1 < iverneed->vn_cnt) | |
6785 | ivernaux->vna_nextptr = ivernaux + 1; | |
6786 | else | |
6787 | ivernaux->vna_nextptr = NULL; | |
6788 | ||
d0fb9a8d JJ |
6789 | if (ivernaux->vna_next |
6790 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6791 | goto error_return_verref; | |
6792 | ||
fc0e6df6 PB |
6793 | evernaux = ((Elf_External_Vernaux *) |
6794 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6795 | ||
6796 | if (ivernaux->vna_other > freeidx) | |
6797 | freeidx = ivernaux->vna_other; | |
6798 | } | |
6799 | ||
6800 | if (i + 1 < hdr->sh_info) | |
6801 | iverneed->vn_nextref = iverneed + 1; | |
6802 | else | |
6803 | iverneed->vn_nextref = NULL; | |
6804 | ||
d0fb9a8d JJ |
6805 | if (iverneed->vn_next |
6806 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6807 | goto error_return_verref; | |
6808 | ||
fc0e6df6 PB |
6809 | everneed = ((Elf_External_Verneed *) |
6810 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6811 | } | |
6812 | ||
6813 | free (contents); | |
6814 | contents = NULL; | |
6815 | } | |
252b5132 RH |
6816 | |
6817 | if (elf_dynverdef (abfd) != 0) | |
6818 | { | |
6819 | Elf_Internal_Shdr *hdr; | |
6820 | Elf_External_Verdef *everdef; | |
6821 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6822 | Elf_Internal_Verdef *iverdefarr; |
6823 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6824 | unsigned int i; |
062e2358 | 6825 | unsigned int maxidx; |
d0fb9a8d | 6826 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6827 | |
6828 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6829 | ||
217aa764 | 6830 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6831 | if (contents == NULL) |
6832 | goto error_return; | |
6833 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6834 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6835 | goto error_return; |
6836 | ||
d0fb9a8d JJ |
6837 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6838 | goto error_return; | |
6839 | ||
6840 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6841 | >= sizeof (Elf_External_Verdaux)); | |
6842 | contents_end_def = contents + hdr->sh_size | |
6843 | - sizeof (Elf_External_Verdef); | |
6844 | contents_end_aux = contents + hdr->sh_size | |
6845 | - sizeof (Elf_External_Verdaux); | |
6846 | ||
f631889e UD |
6847 | /* We know the number of entries in the section but not the maximum |
6848 | index. Therefore we have to run through all entries and find | |
6849 | the maximum. */ | |
252b5132 | 6850 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6851 | maxidx = 0; |
6852 | for (i = 0; i < hdr->sh_info; ++i) | |
6853 | { | |
6854 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6855 | ||
062e2358 AM |
6856 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6857 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6858 | |
d0fb9a8d JJ |
6859 | if (iverdefmem.vd_next |
6860 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6861 | goto error_return; | |
6862 | ||
f631889e UD |
6863 | everdef = ((Elf_External_Verdef *) |
6864 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6865 | } | |
6866 | ||
fc0e6df6 PB |
6867 | if (default_imported_symver) |
6868 | { | |
6869 | if (freeidx > maxidx) | |
6870 | maxidx = ++freeidx; | |
6871 | else | |
6872 | freeidx = ++maxidx; | |
6873 | } | |
d0fb9a8d JJ |
6874 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6875 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6876 | if (elf_tdata (abfd)->verdef == NULL) |
6877 | goto error_return; | |
6878 | ||
6879 | elf_tdata (abfd)->cverdefs = maxidx; | |
6880 | ||
6881 | everdef = (Elf_External_Verdef *) contents; | |
6882 | iverdefarr = elf_tdata (abfd)->verdef; | |
6883 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6884 | { |
6885 | Elf_External_Verdaux *everdaux; | |
6886 | Elf_Internal_Verdaux *iverdaux; | |
6887 | unsigned int j; | |
6888 | ||
f631889e UD |
6889 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6890 | ||
d0fb9a8d JJ |
6891 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6892 | { | |
6893 | error_return_verdef: | |
6894 | elf_tdata (abfd)->verdef = NULL; | |
6895 | elf_tdata (abfd)->cverdefs = 0; | |
6896 | goto error_return; | |
6897 | } | |
6898 | ||
f631889e UD |
6899 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6900 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6901 | |
6902 | iverdef->vd_bfd = abfd; | |
6903 | ||
d0fb9a8d JJ |
6904 | if (iverdef->vd_cnt == 0) |
6905 | iverdef->vd_auxptr = NULL; | |
6906 | else | |
6907 | { | |
6908 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6909 | sizeof (Elf_Internal_Verdaux)); | |
6910 | if (iverdef->vd_auxptr == NULL) | |
6911 | goto error_return_verdef; | |
6912 | } | |
6913 | ||
6914 | if (iverdef->vd_aux | |
6915 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6916 | goto error_return_verdef; | |
252b5132 RH |
6917 | |
6918 | everdaux = ((Elf_External_Verdaux *) | |
6919 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6920 | iverdaux = iverdef->vd_auxptr; | |
6921 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6922 | { | |
6923 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6924 | ||
6925 | iverdaux->vda_nodename = | |
6926 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6927 | iverdaux->vda_name); | |
6928 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6929 | goto error_return_verdef; |
252b5132 RH |
6930 | |
6931 | if (j + 1 < iverdef->vd_cnt) | |
6932 | iverdaux->vda_nextptr = iverdaux + 1; | |
6933 | else | |
6934 | iverdaux->vda_nextptr = NULL; | |
6935 | ||
d0fb9a8d JJ |
6936 | if (iverdaux->vda_next |
6937 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6938 | goto error_return_verdef; | |
6939 | ||
252b5132 RH |
6940 | everdaux = ((Elf_External_Verdaux *) |
6941 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6942 | } | |
6943 | ||
d0fb9a8d JJ |
6944 | if (iverdef->vd_cnt) |
6945 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6946 | |
d0fb9a8d | 6947 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6948 | iverdef->vd_nextdef = iverdef + 1; |
6949 | else | |
6950 | iverdef->vd_nextdef = NULL; | |
6951 | ||
6952 | everdef = ((Elf_External_Verdef *) | |
6953 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6954 | } | |
6955 | ||
6956 | free (contents); | |
6957 | contents = NULL; | |
6958 | } | |
fc0e6df6 | 6959 | else if (default_imported_symver) |
252b5132 | 6960 | { |
fc0e6df6 PB |
6961 | if (freeidx < 3) |
6962 | freeidx = 3; | |
6963 | else | |
6964 | freeidx++; | |
252b5132 | 6965 | |
d0fb9a8d JJ |
6966 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6967 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6968 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6969 | goto error_return; |
6970 | ||
fc0e6df6 PB |
6971 | elf_tdata (abfd)->cverdefs = freeidx; |
6972 | } | |
252b5132 | 6973 | |
fc0e6df6 PB |
6974 | /* Create a default version based on the soname. */ |
6975 | if (default_imported_symver) | |
6976 | { | |
6977 | Elf_Internal_Verdef *iverdef; | |
6978 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6979 | |
fc0e6df6 | 6980 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6981 | |
fc0e6df6 PB |
6982 | iverdef->vd_version = VER_DEF_CURRENT; |
6983 | iverdef->vd_flags = 0; | |
6984 | iverdef->vd_ndx = freeidx; | |
6985 | iverdef->vd_cnt = 1; | |
252b5132 | 6986 | |
fc0e6df6 | 6987 | iverdef->vd_bfd = abfd; |
252b5132 | 6988 | |
fc0e6df6 PB |
6989 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6990 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6991 | goto error_return_verdef; |
fc0e6df6 | 6992 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6993 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6994 | if (iverdef->vd_auxptr == NULL) | |
6995 | goto error_return_verdef; | |
252b5132 | 6996 | |
fc0e6df6 PB |
6997 | iverdaux = iverdef->vd_auxptr; |
6998 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6999 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
7000 | } |
7001 | ||
b34976b6 | 7002 | return TRUE; |
252b5132 RH |
7003 | |
7004 | error_return: | |
5ed6aba4 | 7005 | if (contents != NULL) |
252b5132 | 7006 | free (contents); |
b34976b6 | 7007 | return FALSE; |
252b5132 RH |
7008 | } |
7009 | \f | |
7010 | asymbol * | |
217aa764 | 7011 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
7012 | { |
7013 | elf_symbol_type *newsym; | |
dc810e39 | 7014 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 7015 | |
217aa764 | 7016 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
7017 | if (!newsym) |
7018 | return NULL; | |
7019 | else | |
7020 | { | |
7021 | newsym->symbol.the_bfd = abfd; | |
7022 | return &newsym->symbol; | |
7023 | } | |
7024 | } | |
7025 | ||
7026 | void | |
217aa764 AM |
7027 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
7028 | asymbol *symbol, | |
7029 | symbol_info *ret) | |
252b5132 RH |
7030 | { |
7031 | bfd_symbol_info (symbol, ret); | |
7032 | } | |
7033 | ||
7034 | /* Return whether a symbol name implies a local symbol. Most targets | |
7035 | use this function for the is_local_label_name entry point, but some | |
7036 | override it. */ | |
7037 | ||
b34976b6 | 7038 | bfd_boolean |
217aa764 AM |
7039 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
7040 | const char *name) | |
252b5132 RH |
7041 | { |
7042 | /* Normal local symbols start with ``.L''. */ | |
7043 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 7044 | return TRUE; |
252b5132 RH |
7045 | |
7046 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
7047 | DWARF debugging symbols starting with ``..''. */ | |
7048 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 7049 | return TRUE; |
252b5132 RH |
7050 | |
7051 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
7052 | emitting DWARF debugging output. I suspect this is actually a | |
7053 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
7054 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
7055 | underscore to be emitted on some ELF targets). For ease of use, | |
7056 | we treat such symbols as local. */ | |
7057 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 7058 | return TRUE; |
252b5132 | 7059 | |
b34976b6 | 7060 | return FALSE; |
252b5132 RH |
7061 | } |
7062 | ||
7063 | alent * | |
217aa764 AM |
7064 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
7065 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
7066 | { |
7067 | abort (); | |
7068 | return NULL; | |
7069 | } | |
7070 | ||
b34976b6 | 7071 | bfd_boolean |
217aa764 AM |
7072 | _bfd_elf_set_arch_mach (bfd *abfd, |
7073 | enum bfd_architecture arch, | |
7074 | unsigned long machine) | |
252b5132 RH |
7075 | { |
7076 | /* If this isn't the right architecture for this backend, and this | |
7077 | isn't the generic backend, fail. */ | |
7078 | if (arch != get_elf_backend_data (abfd)->arch | |
7079 | && arch != bfd_arch_unknown | |
7080 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 7081 | return FALSE; |
252b5132 RH |
7082 | |
7083 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
7084 | } | |
7085 | ||
d1fad7c6 NC |
7086 | /* Find the function to a particular section and offset, |
7087 | for error reporting. */ | |
252b5132 | 7088 | |
b34976b6 | 7089 | static bfd_boolean |
217aa764 AM |
7090 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
7091 | asection *section, | |
7092 | asymbol **symbols, | |
7093 | bfd_vma offset, | |
7094 | const char **filename_ptr, | |
7095 | const char **functionname_ptr) | |
252b5132 | 7096 | { |
252b5132 | 7097 | const char *filename; |
57426232 | 7098 | asymbol *func, *file; |
252b5132 RH |
7099 | bfd_vma low_func; |
7100 | asymbol **p; | |
57426232 JB |
7101 | /* ??? Given multiple file symbols, it is impossible to reliably |
7102 | choose the right file name for global symbols. File symbols are | |
7103 | local symbols, and thus all file symbols must sort before any | |
7104 | global symbols. The ELF spec may be interpreted to say that a | |
7105 | file symbol must sort before other local symbols, but currently | |
7106 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
7107 | make a better choice of file name for local symbols by ignoring | |
7108 | file symbols appearing after a given local symbol. */ | |
7109 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 7110 | |
252b5132 RH |
7111 | filename = NULL; |
7112 | func = NULL; | |
57426232 | 7113 | file = NULL; |
252b5132 | 7114 | low_func = 0; |
57426232 | 7115 | state = nothing_seen; |
252b5132 RH |
7116 | |
7117 | for (p = symbols; *p != NULL; p++) | |
7118 | { | |
7119 | elf_symbol_type *q; | |
7120 | ||
7121 | q = (elf_symbol_type *) *p; | |
7122 | ||
252b5132 RH |
7123 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
7124 | { | |
7125 | default: | |
7126 | break; | |
7127 | case STT_FILE: | |
57426232 JB |
7128 | file = &q->symbol; |
7129 | if (state == symbol_seen) | |
7130 | state = file_after_symbol_seen; | |
7131 | continue; | |
252b5132 RH |
7132 | case STT_NOTYPE: |
7133 | case STT_FUNC: | |
6b40fcba | 7134 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
7135 | && q->symbol.value >= low_func |
7136 | && q->symbol.value <= offset) | |
7137 | { | |
7138 | func = (asymbol *) q; | |
7139 | low_func = q->symbol.value; | |
a1923858 AM |
7140 | filename = NULL; |
7141 | if (file != NULL | |
7142 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
7143 | || state != file_after_symbol_seen)) | |
57426232 | 7144 | filename = bfd_asymbol_name (file); |
252b5132 RH |
7145 | } |
7146 | break; | |
7147 | } | |
57426232 JB |
7148 | if (state == nothing_seen) |
7149 | state = symbol_seen; | |
252b5132 RH |
7150 | } |
7151 | ||
7152 | if (func == NULL) | |
b34976b6 | 7153 | return FALSE; |
252b5132 | 7154 | |
d1fad7c6 NC |
7155 | if (filename_ptr) |
7156 | *filename_ptr = filename; | |
7157 | if (functionname_ptr) | |
7158 | *functionname_ptr = bfd_asymbol_name (func); | |
7159 | ||
b34976b6 | 7160 | return TRUE; |
d1fad7c6 NC |
7161 | } |
7162 | ||
7163 | /* Find the nearest line to a particular section and offset, | |
7164 | for error reporting. */ | |
7165 | ||
b34976b6 | 7166 | bfd_boolean |
217aa764 AM |
7167 | _bfd_elf_find_nearest_line (bfd *abfd, |
7168 | asection *section, | |
7169 | asymbol **symbols, | |
7170 | bfd_vma offset, | |
7171 | const char **filename_ptr, | |
7172 | const char **functionname_ptr, | |
7173 | unsigned int *line_ptr) | |
d1fad7c6 | 7174 | { |
b34976b6 | 7175 | bfd_boolean found; |
d1fad7c6 NC |
7176 | |
7177 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7178 | filename_ptr, functionname_ptr, |
7179 | line_ptr)) | |
d1fad7c6 NC |
7180 | { |
7181 | if (!*functionname_ptr) | |
4e8a9624 AM |
7182 | elf_find_function (abfd, section, symbols, offset, |
7183 | *filename_ptr ? NULL : filename_ptr, | |
7184 | functionname_ptr); | |
7185 | ||
b34976b6 | 7186 | return TRUE; |
d1fad7c6 NC |
7187 | } |
7188 | ||
7189 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7190 | filename_ptr, functionname_ptr, |
7191 | line_ptr, 0, | |
7192 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7193 | { |
7194 | if (!*functionname_ptr) | |
4e8a9624 AM |
7195 | elf_find_function (abfd, section, symbols, offset, |
7196 | *filename_ptr ? NULL : filename_ptr, | |
7197 | functionname_ptr); | |
7198 | ||
b34976b6 | 7199 | return TRUE; |
d1fad7c6 NC |
7200 | } |
7201 | ||
7202 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7203 | &found, filename_ptr, |
7204 | functionname_ptr, line_ptr, | |
7205 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7206 | return FALSE; |
dc43ada5 | 7207 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7208 | return TRUE; |
d1fad7c6 NC |
7209 | |
7210 | if (symbols == NULL) | |
b34976b6 | 7211 | return FALSE; |
d1fad7c6 NC |
7212 | |
7213 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7214 | filename_ptr, functionname_ptr)) |
b34976b6 | 7215 | return FALSE; |
d1fad7c6 | 7216 | |
252b5132 | 7217 | *line_ptr = 0; |
b34976b6 | 7218 | return TRUE; |
252b5132 RH |
7219 | } |
7220 | ||
5420f73d L |
7221 | /* Find the line for a symbol. */ |
7222 | ||
7223 | bfd_boolean | |
7224 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7225 | const char **filename_ptr, unsigned int *line_ptr) | |
7226 | { | |
7227 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7228 | filename_ptr, line_ptr, 0, | |
7229 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7230 | } | |
7231 | ||
4ab527b0 FF |
7232 | /* After a call to bfd_find_nearest_line, successive calls to |
7233 | bfd_find_inliner_info can be used to get source information about | |
7234 | each level of function inlining that terminated at the address | |
7235 | passed to bfd_find_nearest_line. Currently this is only supported | |
7236 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7237 | ||
7238 | bfd_boolean | |
7239 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7240 | const char **filename_ptr, | |
7241 | const char **functionname_ptr, | |
7242 | unsigned int *line_ptr) | |
7243 | { | |
7244 | bfd_boolean found; | |
7245 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7246 | functionname_ptr, line_ptr, | |
7247 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7248 | return found; | |
7249 | } | |
7250 | ||
252b5132 | 7251 | int |
a6b96beb | 7252 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7253 | { |
8ded5a0f AM |
7254 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7255 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7256 | |
a6b96beb | 7257 | if (!info->relocatable) |
8ded5a0f | 7258 | { |
62d7a5f6 | 7259 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7260 | |
62d7a5f6 AM |
7261 | if (phdr_size == (bfd_size_type) -1) |
7262 | { | |
7263 | struct elf_segment_map *m; | |
7264 | ||
7265 | phdr_size = 0; | |
7266 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7267 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7268 | |
62d7a5f6 AM |
7269 | if (phdr_size == 0) |
7270 | phdr_size = get_program_header_size (abfd, info); | |
7271 | } | |
8ded5a0f AM |
7272 | |
7273 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7274 | ret += phdr_size; | |
7275 | } | |
7276 | ||
252b5132 RH |
7277 | return ret; |
7278 | } | |
7279 | ||
b34976b6 | 7280 | bfd_boolean |
217aa764 AM |
7281 | _bfd_elf_set_section_contents (bfd *abfd, |
7282 | sec_ptr section, | |
0f867abe | 7283 | const void *location, |
217aa764 AM |
7284 | file_ptr offset, |
7285 | bfd_size_type count) | |
252b5132 RH |
7286 | { |
7287 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7288 | bfd_signed_vma pos; |
252b5132 RH |
7289 | |
7290 | if (! abfd->output_has_begun | |
217aa764 | 7291 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7292 | return FALSE; |
252b5132 RH |
7293 | |
7294 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7295 | pos = hdr->sh_offset + offset; |
7296 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7297 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7298 | return FALSE; |
252b5132 | 7299 | |
b34976b6 | 7300 | return TRUE; |
252b5132 RH |
7301 | } |
7302 | ||
7303 | void | |
217aa764 AM |
7304 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7305 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7306 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7307 | { |
7308 | abort (); | |
7309 | } | |
7310 | ||
252b5132 RH |
7311 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7312 | ||
b34976b6 | 7313 | bfd_boolean |
217aa764 | 7314 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7315 | { |
c044fabd | 7316 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7317 | |
7318 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7319 | { | |
7320 | bfd_reloc_code_real_type code; | |
7321 | reloc_howto_type *howto; | |
7322 | ||
7323 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7324 | equivalent ELF reloc. */ |
252b5132 RH |
7325 | |
7326 | if (areloc->howto->pc_relative) | |
7327 | { | |
7328 | switch (areloc->howto->bitsize) | |
7329 | { | |
7330 | case 8: | |
7331 | code = BFD_RELOC_8_PCREL; | |
7332 | break; | |
7333 | case 12: | |
7334 | code = BFD_RELOC_12_PCREL; | |
7335 | break; | |
7336 | case 16: | |
7337 | code = BFD_RELOC_16_PCREL; | |
7338 | break; | |
7339 | case 24: | |
7340 | code = BFD_RELOC_24_PCREL; | |
7341 | break; | |
7342 | case 32: | |
7343 | code = BFD_RELOC_32_PCREL; | |
7344 | break; | |
7345 | case 64: | |
7346 | code = BFD_RELOC_64_PCREL; | |
7347 | break; | |
7348 | default: | |
7349 | goto fail; | |
7350 | } | |
7351 | ||
7352 | howto = bfd_reloc_type_lookup (abfd, code); | |
7353 | ||
7354 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7355 | { | |
7356 | if (howto->pcrel_offset) | |
7357 | areloc->addend += areloc->address; | |
7358 | else | |
7359 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7360 | } | |
7361 | } | |
7362 | else | |
7363 | { | |
7364 | switch (areloc->howto->bitsize) | |
7365 | { | |
7366 | case 8: | |
7367 | code = BFD_RELOC_8; | |
7368 | break; | |
7369 | case 14: | |
7370 | code = BFD_RELOC_14; | |
7371 | break; | |
7372 | case 16: | |
7373 | code = BFD_RELOC_16; | |
7374 | break; | |
7375 | case 26: | |
7376 | code = BFD_RELOC_26; | |
7377 | break; | |
7378 | case 32: | |
7379 | code = BFD_RELOC_32; | |
7380 | break; | |
7381 | case 64: | |
7382 | code = BFD_RELOC_64; | |
7383 | break; | |
7384 | default: | |
7385 | goto fail; | |
7386 | } | |
7387 | ||
7388 | howto = bfd_reloc_type_lookup (abfd, code); | |
7389 | } | |
7390 | ||
7391 | if (howto) | |
7392 | areloc->howto = howto; | |
7393 | else | |
7394 | goto fail; | |
7395 | } | |
7396 | ||
b34976b6 | 7397 | return TRUE; |
252b5132 RH |
7398 | |
7399 | fail: | |
7400 | (*_bfd_error_handler) | |
d003868e AM |
7401 | (_("%B: unsupported relocation type %s"), |
7402 | abfd, areloc->howto->name); | |
252b5132 | 7403 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7404 | return FALSE; |
252b5132 RH |
7405 | } |
7406 | ||
b34976b6 | 7407 | bfd_boolean |
217aa764 | 7408 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7409 | { |
7410 | if (bfd_get_format (abfd) == bfd_object) | |
7411 | { | |
b25e3d87 | 7412 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7413 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7414 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7415 | } |
7416 | ||
7417 | return _bfd_generic_close_and_cleanup (abfd); | |
7418 | } | |
7419 | ||
7420 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7421 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7422 | range-checking to interfere. There is nothing else to do in processing | |
7423 | this reloc. */ | |
7424 | ||
7425 | bfd_reloc_status_type | |
217aa764 AM |
7426 | _bfd_elf_rel_vtable_reloc_fn |
7427 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7428 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7429 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7430 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7431 | { |
7432 | return bfd_reloc_ok; | |
7433 | } | |
252b5132 RH |
7434 | \f |
7435 | /* Elf core file support. Much of this only works on native | |
7436 | toolchains, since we rely on knowing the | |
7437 | machine-dependent procfs structure in order to pick | |
c044fabd | 7438 | out details about the corefile. */ |
252b5132 RH |
7439 | |
7440 | #ifdef HAVE_SYS_PROCFS_H | |
7441 | # include <sys/procfs.h> | |
7442 | #endif | |
7443 | ||
c044fabd | 7444 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7445 | |
7446 | static int | |
217aa764 | 7447 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7448 | { |
7449 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7450 | + (elf_tdata (abfd)->core_pid)); | |
7451 | } | |
7452 | ||
252b5132 RH |
7453 | /* If there isn't a section called NAME, make one, using |
7454 | data from SECT. Note, this function will generate a | |
7455 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7456 | overwrite it. */ |
252b5132 | 7457 | |
b34976b6 | 7458 | static bfd_boolean |
217aa764 | 7459 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7460 | { |
c044fabd | 7461 | asection *sect2; |
252b5132 RH |
7462 | |
7463 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7464 | return TRUE; |
252b5132 | 7465 | |
117ed4f8 | 7466 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7467 | if (sect2 == NULL) |
b34976b6 | 7468 | return FALSE; |
252b5132 | 7469 | |
eea6121a | 7470 | sect2->size = sect->size; |
252b5132 | 7471 | sect2->filepos = sect->filepos; |
252b5132 | 7472 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7473 | return TRUE; |
252b5132 RH |
7474 | } |
7475 | ||
bb0082d6 AM |
7476 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7477 | actually creates up to two pseudosections: | |
7478 | - For the single-threaded case, a section named NAME, unless | |
7479 | such a section already exists. | |
7480 | - For the multi-threaded case, a section named "NAME/PID", where | |
7481 | PID is elfcore_make_pid (abfd). | |
7482 | Both pseudosections have identical contents. */ | |
b34976b6 | 7483 | bfd_boolean |
217aa764 AM |
7484 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7485 | char *name, | |
7486 | size_t size, | |
7487 | ufile_ptr filepos) | |
bb0082d6 AM |
7488 | { |
7489 | char buf[100]; | |
7490 | char *threaded_name; | |
d4c88bbb | 7491 | size_t len; |
bb0082d6 AM |
7492 | asection *sect; |
7493 | ||
7494 | /* Build the section name. */ | |
7495 | ||
7496 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7497 | len = strlen (buf) + 1; |
217aa764 | 7498 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7499 | if (threaded_name == NULL) |
b34976b6 | 7500 | return FALSE; |
d4c88bbb | 7501 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7502 | |
117ed4f8 AM |
7503 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7504 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7505 | if (sect == NULL) |
b34976b6 | 7506 | return FALSE; |
eea6121a | 7507 | sect->size = size; |
bb0082d6 | 7508 | sect->filepos = filepos; |
bb0082d6 AM |
7509 | sect->alignment_power = 2; |
7510 | ||
936e320b | 7511 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7512 | } |
7513 | ||
252b5132 | 7514 | /* prstatus_t exists on: |
4a938328 | 7515 | solaris 2.5+ |
252b5132 RH |
7516 | linux 2.[01] + glibc |
7517 | unixware 4.2 | |
7518 | */ | |
7519 | ||
7520 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7521 | |
b34976b6 | 7522 | static bfd_boolean |
217aa764 | 7523 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7524 | { |
eea6121a | 7525 | size_t size; |
7ee38065 | 7526 | int offset; |
252b5132 | 7527 | |
4a938328 MS |
7528 | if (note->descsz == sizeof (prstatus_t)) |
7529 | { | |
7530 | prstatus_t prstat; | |
252b5132 | 7531 | |
eea6121a | 7532 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7533 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7534 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7535 | |
fa49d224 NC |
7536 | /* Do not overwrite the core signal if it |
7537 | has already been set by another thread. */ | |
7538 | if (elf_tdata (abfd)->core_signal == 0) | |
7539 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7540 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7541 | |
4a938328 MS |
7542 | /* pr_who exists on: |
7543 | solaris 2.5+ | |
7544 | unixware 4.2 | |
7545 | pr_who doesn't exist on: | |
7546 | linux 2.[01] | |
7547 | */ | |
252b5132 | 7548 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7549 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7550 | #endif |
4a938328 | 7551 | } |
7ee38065 | 7552 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7553 | else if (note->descsz == sizeof (prstatus32_t)) |
7554 | { | |
7555 | /* 64-bit host, 32-bit corefile */ | |
7556 | prstatus32_t prstat; | |
7557 | ||
eea6121a | 7558 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7559 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7560 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7561 | ||
fa49d224 NC |
7562 | /* Do not overwrite the core signal if it |
7563 | has already been set by another thread. */ | |
7564 | if (elf_tdata (abfd)->core_signal == 0) | |
7565 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7566 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7567 | ||
7568 | /* pr_who exists on: | |
7569 | solaris 2.5+ | |
7570 | unixware 4.2 | |
7571 | pr_who doesn't exist on: | |
7572 | linux 2.[01] | |
7573 | */ | |
7ee38065 | 7574 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7575 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7576 | #endif | |
7577 | } | |
7ee38065 | 7578 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7579 | else |
7580 | { | |
7581 | /* Fail - we don't know how to handle any other | |
7582 | note size (ie. data object type). */ | |
b34976b6 | 7583 | return TRUE; |
4a938328 | 7584 | } |
252b5132 | 7585 | |
bb0082d6 | 7586 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7587 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7588 | size, note->descpos + offset); |
252b5132 RH |
7589 | } |
7590 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7591 | ||
bb0082d6 | 7592 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7593 | static bfd_boolean |
217aa764 AM |
7594 | elfcore_make_note_pseudosection (bfd *abfd, |
7595 | char *name, | |
7596 | Elf_Internal_Note *note) | |
252b5132 | 7597 | { |
936e320b AM |
7598 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7599 | note->descsz, note->descpos); | |
252b5132 RH |
7600 | } |
7601 | ||
ff08c6bb JB |
7602 | /* There isn't a consistent prfpregset_t across platforms, |
7603 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7604 | data structure apart. */ |
7605 | ||
b34976b6 | 7606 | static bfd_boolean |
217aa764 | 7607 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7608 | { |
7609 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7610 | } | |
7611 | ||
ff08c6bb JB |
7612 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7613 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7614 | literally. */ | |
c044fabd | 7615 | |
b34976b6 | 7616 | static bfd_boolean |
217aa764 | 7617 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7618 | { |
7619 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7620 | } | |
7621 | ||
252b5132 | 7622 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7623 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7624 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7625 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7626 | #endif | |
252b5132 RH |
7627 | #endif |
7628 | ||
7629 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7630 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7631 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7632 | typedef psinfo32_t elfcore_psinfo32_t; |
7633 | #endif | |
252b5132 RH |
7634 | #endif |
7635 | ||
252b5132 RH |
7636 | /* return a malloc'ed copy of a string at START which is at |
7637 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7638 | the copy will always have a terminating '\0'. */ |
252b5132 | 7639 | |
936e320b | 7640 | char * |
217aa764 | 7641 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7642 | { |
dc810e39 | 7643 | char *dups; |
c044fabd | 7644 | char *end = memchr (start, '\0', max); |
dc810e39 | 7645 | size_t len; |
252b5132 RH |
7646 | |
7647 | if (end == NULL) | |
7648 | len = max; | |
7649 | else | |
7650 | len = end - start; | |
7651 | ||
217aa764 | 7652 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7653 | if (dups == NULL) |
252b5132 RH |
7654 | return NULL; |
7655 | ||
dc810e39 AM |
7656 | memcpy (dups, start, len); |
7657 | dups[len] = '\0'; | |
252b5132 | 7658 | |
dc810e39 | 7659 | return dups; |
252b5132 RH |
7660 | } |
7661 | ||
bb0082d6 | 7662 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7663 | static bfd_boolean |
217aa764 | 7664 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7665 | { |
4a938328 MS |
7666 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7667 | { | |
7668 | elfcore_psinfo_t psinfo; | |
252b5132 | 7669 | |
7ee38065 | 7670 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7671 | |
4a938328 | 7672 | elf_tdata (abfd)->core_program |
936e320b AM |
7673 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7674 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7675 | |
4a938328 | 7676 | elf_tdata (abfd)->core_command |
936e320b AM |
7677 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7678 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7679 | } |
7ee38065 | 7680 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7681 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7682 | { | |
7683 | /* 64-bit host, 32-bit corefile */ | |
7684 | elfcore_psinfo32_t psinfo; | |
7685 | ||
7ee38065 | 7686 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7687 | |
4a938328 | 7688 | elf_tdata (abfd)->core_program |
936e320b AM |
7689 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7690 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7691 | |
7692 | elf_tdata (abfd)->core_command | |
936e320b AM |
7693 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7694 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7695 | } |
7696 | #endif | |
7697 | ||
7698 | else | |
7699 | { | |
7700 | /* Fail - we don't know how to handle any other | |
7701 | note size (ie. data object type). */ | |
b34976b6 | 7702 | return TRUE; |
4a938328 | 7703 | } |
252b5132 RH |
7704 | |
7705 | /* Note that for some reason, a spurious space is tacked | |
7706 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7707 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7708 | |
7709 | { | |
c044fabd | 7710 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7711 | int n = strlen (command); |
7712 | ||
7713 | if (0 < n && command[n - 1] == ' ') | |
7714 | command[n - 1] = '\0'; | |
7715 | } | |
7716 | ||
b34976b6 | 7717 | return TRUE; |
252b5132 RH |
7718 | } |
7719 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7720 | ||
252b5132 | 7721 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7722 | static bfd_boolean |
217aa764 | 7723 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7724 | { |
f572a39d AM |
7725 | if (note->descsz == sizeof (pstatus_t) |
7726 | #if defined (HAVE_PXSTATUS_T) | |
7727 | || note->descsz == sizeof (pxstatus_t) | |
7728 | #endif | |
7729 | ) | |
4a938328 MS |
7730 | { |
7731 | pstatus_t pstat; | |
252b5132 | 7732 | |
4a938328 | 7733 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7734 | |
4a938328 MS |
7735 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7736 | } | |
7ee38065 | 7737 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7738 | else if (note->descsz == sizeof (pstatus32_t)) |
7739 | { | |
7740 | /* 64-bit host, 32-bit corefile */ | |
7741 | pstatus32_t pstat; | |
252b5132 | 7742 | |
4a938328 | 7743 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7744 | |
4a938328 MS |
7745 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7746 | } | |
7747 | #endif | |
252b5132 RH |
7748 | /* Could grab some more details from the "representative" |
7749 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7750 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7751 | |
b34976b6 | 7752 | return TRUE; |
252b5132 RH |
7753 | } |
7754 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7755 | ||
252b5132 | 7756 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7757 | static bfd_boolean |
217aa764 | 7758 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7759 | { |
7760 | lwpstatus_t lwpstat; | |
7761 | char buf[100]; | |
c044fabd | 7762 | char *name; |
d4c88bbb | 7763 | size_t len; |
c044fabd | 7764 | asection *sect; |
252b5132 | 7765 | |
f572a39d AM |
7766 | if (note->descsz != sizeof (lwpstat) |
7767 | #if defined (HAVE_LWPXSTATUS_T) | |
7768 | && note->descsz != sizeof (lwpxstatus_t) | |
7769 | #endif | |
7770 | ) | |
b34976b6 | 7771 | return TRUE; |
252b5132 RH |
7772 | |
7773 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7774 | ||
7775 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7776 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7777 | ||
c044fabd | 7778 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7779 | |
7780 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7781 | len = strlen (buf) + 1; |
217aa764 | 7782 | name = bfd_alloc (abfd, len); |
252b5132 | 7783 | if (name == NULL) |
b34976b6 | 7784 | return FALSE; |
d4c88bbb | 7785 | memcpy (name, buf, len); |
252b5132 | 7786 | |
117ed4f8 | 7787 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7788 | if (sect == NULL) |
b34976b6 | 7789 | return FALSE; |
252b5132 RH |
7790 | |
7791 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7792 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7793 | sect->filepos = note->descpos |
7794 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7795 | #endif | |
7796 | ||
7797 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7798 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7799 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7800 | #endif | |
7801 | ||
252b5132 RH |
7802 | sect->alignment_power = 2; |
7803 | ||
7804 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7805 | return FALSE; |
252b5132 RH |
7806 | |
7807 | /* Make a ".reg2/999" section */ | |
7808 | ||
7809 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7810 | len = strlen (buf) + 1; |
217aa764 | 7811 | name = bfd_alloc (abfd, len); |
252b5132 | 7812 | if (name == NULL) |
b34976b6 | 7813 | return FALSE; |
d4c88bbb | 7814 | memcpy (name, buf, len); |
252b5132 | 7815 | |
117ed4f8 | 7816 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7817 | if (sect == NULL) |
b34976b6 | 7818 | return FALSE; |
252b5132 RH |
7819 | |
7820 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7821 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7822 | sect->filepos = note->descpos |
7823 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7824 | #endif | |
7825 | ||
7826 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7827 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7828 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7829 | #endif | |
7830 | ||
252b5132 RH |
7831 | sect->alignment_power = 2; |
7832 | ||
936e320b | 7833 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7834 | } |
7835 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7836 | ||
16e9c715 | 7837 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7838 | static bfd_boolean |
217aa764 | 7839 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7840 | { |
7841 | char buf[30]; | |
c044fabd | 7842 | char *name; |
d4c88bbb | 7843 | size_t len; |
c044fabd | 7844 | asection *sect; |
16e9c715 NC |
7845 | win32_pstatus_t pstatus; |
7846 | ||
7847 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7848 | return TRUE; |
16e9c715 | 7849 | |
e8eab623 | 7850 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7851 | |
7852 | switch (pstatus.data_type) | |
16e9c715 NC |
7853 | { |
7854 | case NOTE_INFO_PROCESS: | |
7855 | /* FIXME: need to add ->core_command. */ | |
7856 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7857 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7858 | break; |
16e9c715 NC |
7859 | |
7860 | case NOTE_INFO_THREAD: | |
7861 | /* Make a ".reg/999" section. */ | |
1f170678 | 7862 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7863 | |
d4c88bbb | 7864 | len = strlen (buf) + 1; |
217aa764 | 7865 | name = bfd_alloc (abfd, len); |
16e9c715 | 7866 | if (name == NULL) |
b34976b6 | 7867 | return FALSE; |
c044fabd | 7868 | |
d4c88bbb | 7869 | memcpy (name, buf, len); |
16e9c715 | 7870 | |
117ed4f8 | 7871 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7872 | if (sect == NULL) |
b34976b6 | 7873 | return FALSE; |
c044fabd | 7874 | |
eea6121a | 7875 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7876 | sect->filepos = (note->descpos |
7877 | + offsetof (struct win32_pstatus, | |
7878 | data.thread_info.thread_context)); | |
16e9c715 NC |
7879 | sect->alignment_power = 2; |
7880 | ||
7881 | if (pstatus.data.thread_info.is_active_thread) | |
7882 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7883 | return FALSE; |
16e9c715 NC |
7884 | break; |
7885 | ||
7886 | case NOTE_INFO_MODULE: | |
7887 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7888 | sprintf (buf, ".module/%08lx", |
7889 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7890 | |
d4c88bbb | 7891 | len = strlen (buf) + 1; |
217aa764 | 7892 | name = bfd_alloc (abfd, len); |
16e9c715 | 7893 | if (name == NULL) |
b34976b6 | 7894 | return FALSE; |
c044fabd | 7895 | |
d4c88bbb | 7896 | memcpy (name, buf, len); |
252b5132 | 7897 | |
117ed4f8 | 7898 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7899 | |
16e9c715 | 7900 | if (sect == NULL) |
b34976b6 | 7901 | return FALSE; |
c044fabd | 7902 | |
eea6121a | 7903 | sect->size = note->descsz; |
16e9c715 | 7904 | sect->filepos = note->descpos; |
16e9c715 NC |
7905 | sect->alignment_power = 2; |
7906 | break; | |
7907 | ||
7908 | default: | |
b34976b6 | 7909 | return TRUE; |
16e9c715 NC |
7910 | } |
7911 | ||
b34976b6 | 7912 | return TRUE; |
16e9c715 NC |
7913 | } |
7914 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7915 | |
b34976b6 | 7916 | static bfd_boolean |
217aa764 | 7917 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7918 | { |
9c5bfbb7 | 7919 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7920 | |
252b5132 RH |
7921 | switch (note->type) |
7922 | { | |
7923 | default: | |
b34976b6 | 7924 | return TRUE; |
252b5132 | 7925 | |
252b5132 | 7926 | case NT_PRSTATUS: |
bb0082d6 AM |
7927 | if (bed->elf_backend_grok_prstatus) |
7928 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7929 | return TRUE; |
bb0082d6 | 7930 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7931 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7932 | #else |
b34976b6 | 7933 | return TRUE; |
252b5132 RH |
7934 | #endif |
7935 | ||
7936 | #if defined (HAVE_PSTATUS_T) | |
7937 | case NT_PSTATUS: | |
7938 | return elfcore_grok_pstatus (abfd, note); | |
7939 | #endif | |
7940 | ||
7941 | #if defined (HAVE_LWPSTATUS_T) | |
7942 | case NT_LWPSTATUS: | |
7943 | return elfcore_grok_lwpstatus (abfd, note); | |
7944 | #endif | |
7945 | ||
7946 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7947 | return elfcore_grok_prfpreg (abfd, note); | |
7948 | ||
16e9c715 | 7949 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7950 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7951 | return elfcore_grok_win32pstatus (abfd, note); |
7952 | #endif | |
7953 | ||
c044fabd | 7954 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7955 | if (note->namesz == 6 |
7956 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7957 | return elfcore_grok_prxfpreg (abfd, note); |
7958 | else | |
b34976b6 | 7959 | return TRUE; |
ff08c6bb | 7960 | |
252b5132 RH |
7961 | case NT_PRPSINFO: |
7962 | case NT_PSINFO: | |
bb0082d6 AM |
7963 | if (bed->elf_backend_grok_psinfo) |
7964 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7965 | return TRUE; |
bb0082d6 | 7966 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7967 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7968 | #else |
b34976b6 | 7969 | return TRUE; |
252b5132 | 7970 | #endif |
3333a7c3 RM |
7971 | |
7972 | case NT_AUXV: | |
7973 | { | |
117ed4f8 AM |
7974 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7975 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7976 | |
7977 | if (sect == NULL) | |
7978 | return FALSE; | |
eea6121a | 7979 | sect->size = note->descsz; |
3333a7c3 | 7980 | sect->filepos = note->descpos; |
3333a7c3 RM |
7981 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7982 | ||
7983 | return TRUE; | |
7984 | } | |
252b5132 RH |
7985 | } |
7986 | } | |
7987 | ||
b34976b6 | 7988 | static bfd_boolean |
217aa764 | 7989 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7990 | { |
7991 | char *cp; | |
7992 | ||
7993 | cp = strchr (note->namedata, '@'); | |
7994 | if (cp != NULL) | |
7995 | { | |
d2b64500 | 7996 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7997 | return TRUE; |
50b2bdb7 | 7998 | } |
b34976b6 | 7999 | return FALSE; |
50b2bdb7 AM |
8000 | } |
8001 | ||
b34976b6 | 8002 | static bfd_boolean |
217aa764 | 8003 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8004 | { |
8005 | ||
8006 | /* Signal number at offset 0x08. */ | |
8007 | elf_tdata (abfd)->core_signal | |
8008 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
8009 | ||
8010 | /* Process ID at offset 0x50. */ | |
8011 | elf_tdata (abfd)->core_pid | |
8012 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
8013 | ||
8014 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
8015 | elf_tdata (abfd)->core_command | |
8016 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
8017 | ||
7720ba9f MK |
8018 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
8019 | note); | |
50b2bdb7 AM |
8020 | } |
8021 | ||
b34976b6 | 8022 | static bfd_boolean |
217aa764 | 8023 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
8024 | { |
8025 | int lwp; | |
8026 | ||
8027 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
8028 | elf_tdata (abfd)->core_lwpid = lwp; | |
8029 | ||
b4db1224 | 8030 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
8031 | { |
8032 | /* NetBSD-specific core "procinfo". Note that we expect to | |
8033 | find this note before any of the others, which is fine, | |
8034 | since the kernel writes this note out first when it | |
8035 | creates a core file. */ | |
47d9a591 | 8036 | |
50b2bdb7 AM |
8037 | return elfcore_grok_netbsd_procinfo (abfd, note); |
8038 | } | |
8039 | ||
b4db1224 JT |
8040 | /* As of Jan 2002 there are no other machine-independent notes |
8041 | defined for NetBSD core files. If the note type is less | |
8042 | than the start of the machine-dependent note types, we don't | |
8043 | understand it. */ | |
47d9a591 | 8044 | |
b4db1224 | 8045 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 8046 | return TRUE; |
50b2bdb7 AM |
8047 | |
8048 | ||
8049 | switch (bfd_get_arch (abfd)) | |
8050 | { | |
8051 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
8052 | PT_GETFPREGS == mach+2. */ | |
8053 | ||
8054 | case bfd_arch_alpha: | |
8055 | case bfd_arch_sparc: | |
8056 | switch (note->type) | |
8057 | { | |
b4db1224 | 8058 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
8059 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
8060 | ||
b4db1224 | 8061 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
8062 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
8063 | ||
8064 | default: | |
b34976b6 | 8065 | return TRUE; |
50b2bdb7 AM |
8066 | } |
8067 | ||
8068 | /* On all other arch's, PT_GETREGS == mach+1 and | |
8069 | PT_GETFPREGS == mach+3. */ | |
8070 | ||
8071 | default: | |
8072 | switch (note->type) | |
8073 | { | |
b4db1224 | 8074 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
8075 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
8076 | ||
b4db1224 | 8077 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
8078 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
8079 | ||
8080 | default: | |
b34976b6 | 8081 | return TRUE; |
50b2bdb7 AM |
8082 | } |
8083 | } | |
8084 | /* NOTREACHED */ | |
8085 | } | |
8086 | ||
07c6e936 | 8087 | static bfd_boolean |
d3fd4074 | 8088 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
8089 | { |
8090 | void *ddata = note->descdata; | |
8091 | char buf[100]; | |
8092 | char *name; | |
8093 | asection *sect; | |
f8843e87 AM |
8094 | short sig; |
8095 | unsigned flags; | |
07c6e936 NC |
8096 | |
8097 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
8098 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
8099 | ||
f8843e87 AM |
8100 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
8101 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
8102 | ||
8103 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
8104 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
8105 | |
8106 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
8107 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
8108 | { | |
8109 | elf_tdata (abfd)->core_signal = sig; | |
8110 | elf_tdata (abfd)->core_lwpid = *tid; | |
8111 | } | |
07c6e936 | 8112 | |
f8843e87 AM |
8113 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
8114 | do not come from signals so we make sure we set the current | |
8115 | thread just in case. */ | |
8116 | if (flags & 0x00000080) | |
8117 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
8118 | |
8119 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 8120 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 8121 | |
217aa764 | 8122 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8123 | if (name == NULL) |
8124 | return FALSE; | |
8125 | strcpy (name, buf); | |
8126 | ||
117ed4f8 | 8127 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8128 | if (sect == NULL) |
8129 | return FALSE; | |
8130 | ||
eea6121a | 8131 | sect->size = note->descsz; |
07c6e936 | 8132 | sect->filepos = note->descpos; |
07c6e936 NC |
8133 | sect->alignment_power = 2; |
8134 | ||
8135 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8136 | } | |
8137 | ||
8138 | static bfd_boolean | |
d69f560c KW |
8139 | elfcore_grok_nto_regs (bfd *abfd, |
8140 | Elf_Internal_Note *note, | |
d3fd4074 | 8141 | long tid, |
d69f560c | 8142 | char *base) |
07c6e936 NC |
8143 | { |
8144 | char buf[100]; | |
8145 | char *name; | |
8146 | asection *sect; | |
8147 | ||
d69f560c | 8148 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8149 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8150 | |
217aa764 | 8151 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8152 | if (name == NULL) |
8153 | return FALSE; | |
8154 | strcpy (name, buf); | |
8155 | ||
117ed4f8 | 8156 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8157 | if (sect == NULL) |
8158 | return FALSE; | |
8159 | ||
eea6121a | 8160 | sect->size = note->descsz; |
07c6e936 | 8161 | sect->filepos = note->descpos; |
07c6e936 NC |
8162 | sect->alignment_power = 2; |
8163 | ||
f8843e87 AM |
8164 | /* This is the current thread. */ |
8165 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8166 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8167 | |
8168 | return TRUE; | |
07c6e936 NC |
8169 | } |
8170 | ||
8171 | #define BFD_QNT_CORE_INFO 7 | |
8172 | #define BFD_QNT_CORE_STATUS 8 | |
8173 | #define BFD_QNT_CORE_GREG 9 | |
8174 | #define BFD_QNT_CORE_FPREG 10 | |
8175 | ||
8176 | static bfd_boolean | |
217aa764 | 8177 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8178 | { |
8179 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8180 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8181 | function. */ |
d3fd4074 | 8182 | static long tid = 1; |
07c6e936 NC |
8183 | |
8184 | switch (note->type) | |
8185 | { | |
d69f560c KW |
8186 | case BFD_QNT_CORE_INFO: |
8187 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8188 | case BFD_QNT_CORE_STATUS: | |
8189 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8190 | case BFD_QNT_CORE_GREG: | |
8191 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8192 | case BFD_QNT_CORE_FPREG: | |
8193 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8194 | default: | |
8195 | return TRUE; | |
07c6e936 NC |
8196 | } |
8197 | } | |
8198 | ||
7c76fa91 MS |
8199 | /* Function: elfcore_write_note |
8200 | ||
47d9a591 | 8201 | Inputs: |
a39f3346 | 8202 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8203 | name of note |
8204 | type of note | |
8205 | data for note | |
8206 | size of data for note | |
8207 | ||
a39f3346 AM |
8208 | Writes note to end of buffer. ELF64 notes are written exactly as |
8209 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8210 | that they ought to have 8-byte namesz and descsz field, and have | |
8211 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8212 | ||
7c76fa91 | 8213 | Return: |
a39f3346 | 8214 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8215 | |
8216 | char * | |
a39f3346 | 8217 | elfcore_write_note (bfd *abfd, |
217aa764 | 8218 | char *buf, |
a39f3346 | 8219 | int *bufsiz, |
217aa764 | 8220 | const char *name, |
a39f3346 | 8221 | int type, |
217aa764 | 8222 | const void *input, |
a39f3346 | 8223 | int size) |
7c76fa91 MS |
8224 | { |
8225 | Elf_External_Note *xnp; | |
d4c88bbb | 8226 | size_t namesz; |
d4c88bbb | 8227 | size_t newspace; |
a39f3346 | 8228 | char *dest; |
7c76fa91 | 8229 | |
d4c88bbb | 8230 | namesz = 0; |
d4c88bbb | 8231 | if (name != NULL) |
a39f3346 | 8232 | namesz = strlen (name) + 1; |
d4c88bbb | 8233 | |
a39f3346 | 8234 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8235 | |
a39f3346 AM |
8236 | buf = realloc (buf, *bufsiz + newspace); |
8237 | dest = buf + *bufsiz; | |
7c76fa91 MS |
8238 | *bufsiz += newspace; |
8239 | xnp = (Elf_External_Note *) dest; | |
8240 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8241 | H_PUT_32 (abfd, size, xnp->descsz); | |
8242 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8243 | dest = xnp->name; |
8244 | if (name != NULL) | |
8245 | { | |
8246 | memcpy (dest, name, namesz); | |
8247 | dest += namesz; | |
a39f3346 | 8248 | while (namesz & 3) |
d4c88bbb AM |
8249 | { |
8250 | *dest++ = '\0'; | |
a39f3346 | 8251 | ++namesz; |
d4c88bbb AM |
8252 | } |
8253 | } | |
8254 | memcpy (dest, input, size); | |
a39f3346 AM |
8255 | dest += size; |
8256 | while (size & 3) | |
8257 | { | |
8258 | *dest++ = '\0'; | |
8259 | ++size; | |
8260 | } | |
8261 | return buf; | |
7c76fa91 MS |
8262 | } |
8263 | ||
8264 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8265 | char * | |
217aa764 AM |
8266 | elfcore_write_prpsinfo (bfd *abfd, |
8267 | char *buf, | |
8268 | int *bufsiz, | |
8269 | const char *fname, | |
8270 | const char *psargs) | |
7c76fa91 | 8271 | { |
183e98be AM |
8272 | const char *note_name = "CORE"; |
8273 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8274 | ||
8275 | if (bed->elf_backend_write_core_note != NULL) | |
8276 | { | |
8277 | char *ret; | |
8278 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8279 | NT_PRPSINFO, fname, psargs); | |
8280 | if (ret != NULL) | |
8281 | return ret; | |
8282 | } | |
7c76fa91 | 8283 | |
183e98be AM |
8284 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8285 | if (bed->s->elfclass == ELFCLASS32) | |
8286 | { | |
8287 | #if defined (HAVE_PSINFO32_T) | |
8288 | psinfo32_t data; | |
8289 | int note_type = NT_PSINFO; | |
8290 | #else | |
8291 | prpsinfo32_t data; | |
8292 | int note_type = NT_PRPSINFO; | |
8293 | #endif | |
8294 | ||
8295 | memset (&data, 0, sizeof (data)); | |
8296 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8297 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8298 | return elfcore_write_note (abfd, buf, bufsiz, | |
8299 | note_name, note_type, &data, sizeof (data)); | |
8300 | } | |
8301 | else | |
8302 | #endif | |
8303 | { | |
7c76fa91 | 8304 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8305 | psinfo_t data; |
8306 | int note_type = NT_PSINFO; | |
7c76fa91 | 8307 | #else |
183e98be AM |
8308 | prpsinfo_t data; |
8309 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8310 | #endif |
8311 | ||
183e98be AM |
8312 | memset (&data, 0, sizeof (data)); |
8313 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8314 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8315 | return elfcore_write_note (abfd, buf, bufsiz, | |
8316 | note_name, note_type, &data, sizeof (data)); | |
8317 | } | |
7c76fa91 MS |
8318 | } |
8319 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8320 | ||
8321 | #if defined (HAVE_PRSTATUS_T) | |
8322 | char * | |
217aa764 AM |
8323 | elfcore_write_prstatus (bfd *abfd, |
8324 | char *buf, | |
8325 | int *bufsiz, | |
8326 | long pid, | |
8327 | int cursig, | |
8328 | const void *gregs) | |
7c76fa91 | 8329 | { |
183e98be AM |
8330 | const char *note_name = "CORE"; |
8331 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8332 | |
183e98be AM |
8333 | if (bed->elf_backend_write_core_note != NULL) |
8334 | { | |
8335 | char *ret; | |
8336 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8337 | NT_PRSTATUS, | |
8338 | pid, cursig, gregs); | |
8339 | if (ret != NULL) | |
8340 | return ret; | |
8341 | } | |
8342 | ||
8343 | #if defined (HAVE_PRSTATUS32_T) | |
8344 | if (bed->s->elfclass == ELFCLASS32) | |
8345 | { | |
8346 | prstatus32_t prstat; | |
8347 | ||
8348 | memset (&prstat, 0, sizeof (prstat)); | |
8349 | prstat.pr_pid = pid; | |
8350 | prstat.pr_cursig = cursig; | |
8351 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8352 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8353 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8354 | } | |
8355 | else | |
8356 | #endif | |
8357 | { | |
8358 | prstatus_t prstat; | |
8359 | ||
8360 | memset (&prstat, 0, sizeof (prstat)); | |
8361 | prstat.pr_pid = pid; | |
8362 | prstat.pr_cursig = cursig; | |
8363 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8364 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8365 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8366 | } | |
7c76fa91 MS |
8367 | } |
8368 | #endif /* HAVE_PRSTATUS_T */ | |
8369 | ||
51316059 MS |
8370 | #if defined (HAVE_LWPSTATUS_T) |
8371 | char * | |
217aa764 AM |
8372 | elfcore_write_lwpstatus (bfd *abfd, |
8373 | char *buf, | |
8374 | int *bufsiz, | |
8375 | long pid, | |
8376 | int cursig, | |
8377 | const void *gregs) | |
51316059 MS |
8378 | { |
8379 | lwpstatus_t lwpstat; | |
183e98be | 8380 | const char *note_name = "CORE"; |
51316059 MS |
8381 | |
8382 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8383 | lwpstat.pr_lwpid = pid >> 16; | |
8384 | lwpstat.pr_cursig = cursig; | |
8385 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8386 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8387 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8388 | #if !defined(gregs) | |
8389 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8390 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8391 | #else | |
8392 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8393 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8394 | #endif | |
8395 | #endif | |
47d9a591 | 8396 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8397 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8398 | } | |
8399 | #endif /* HAVE_LWPSTATUS_T */ | |
8400 | ||
7c76fa91 MS |
8401 | #if defined (HAVE_PSTATUS_T) |
8402 | char * | |
217aa764 AM |
8403 | elfcore_write_pstatus (bfd *abfd, |
8404 | char *buf, | |
8405 | int *bufsiz, | |
8406 | long pid, | |
6c10990d NC |
8407 | int cursig ATTRIBUTE_UNUSED, |
8408 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8409 | { |
183e98be AM |
8410 | const char *note_name = "CORE"; |
8411 | #if defined (HAVE_PSTATUS32_T) | |
8412 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8413 | |
183e98be AM |
8414 | if (bed->s->elfclass == ELFCLASS32) |
8415 | { | |
8416 | pstatus32_t pstat; | |
8417 | ||
8418 | memset (&pstat, 0, sizeof (pstat)); | |
8419 | pstat.pr_pid = pid & 0xffff; | |
8420 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8421 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8422 | return buf; | |
8423 | } | |
8424 | else | |
8425 | #endif | |
8426 | { | |
8427 | pstatus_t pstat; | |
8428 | ||
8429 | memset (&pstat, 0, sizeof (pstat)); | |
8430 | pstat.pr_pid = pid & 0xffff; | |
8431 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8432 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8433 | return buf; | |
8434 | } | |
7c76fa91 MS |
8435 | } |
8436 | #endif /* HAVE_PSTATUS_T */ | |
8437 | ||
8438 | char * | |
217aa764 AM |
8439 | elfcore_write_prfpreg (bfd *abfd, |
8440 | char *buf, | |
8441 | int *bufsiz, | |
8442 | const void *fpregs, | |
8443 | int size) | |
7c76fa91 | 8444 | { |
183e98be | 8445 | const char *note_name = "CORE"; |
47d9a591 | 8446 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8447 | note_name, NT_FPREGSET, fpregs, size); |
8448 | } | |
8449 | ||
8450 | char * | |
217aa764 AM |
8451 | elfcore_write_prxfpreg (bfd *abfd, |
8452 | char *buf, | |
8453 | int *bufsiz, | |
8454 | const void *xfpregs, | |
8455 | int size) | |
7c76fa91 MS |
8456 | { |
8457 | char *note_name = "LINUX"; | |
47d9a591 | 8458 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8459 | note_name, NT_PRXFPREG, xfpregs, size); |
8460 | } | |
8461 | ||
b34976b6 | 8462 | static bfd_boolean |
217aa764 | 8463 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 8464 | { |
c044fabd KH |
8465 | char *buf; |
8466 | char *p; | |
252b5132 RH |
8467 | |
8468 | if (size <= 0) | |
b34976b6 | 8469 | return TRUE; |
252b5132 | 8470 | |
dc810e39 | 8471 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 8472 | return FALSE; |
252b5132 | 8473 | |
dc810e39 | 8474 | buf = bfd_malloc (size); |
252b5132 | 8475 | if (buf == NULL) |
b34976b6 | 8476 | return FALSE; |
252b5132 | 8477 | |
dc810e39 | 8478 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
8479 | { |
8480 | error: | |
8481 | free (buf); | |
b34976b6 | 8482 | return FALSE; |
252b5132 RH |
8483 | } |
8484 | ||
8485 | p = buf; | |
8486 | while (p < buf + size) | |
8487 | { | |
c044fabd KH |
8488 | /* FIXME: bad alignment assumption. */ |
8489 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8490 | Elf_Internal_Note in; |
8491 | ||
dc810e39 | 8492 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8493 | |
dc810e39 | 8494 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8495 | in.namedata = xnp->name; |
8496 | ||
dc810e39 | 8497 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8498 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8499 | in.descpos = offset + (in.descdata - buf); | |
8500 | ||
0112cd26 | 8501 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) |
50b2bdb7 AM |
8502 | { |
8503 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8504 | goto error; | |
8505 | } | |
0112cd26 | 8506 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
07c6e936 NC |
8507 | { |
8508 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8509 | goto error; | |
8510 | } | |
50b2bdb7 AM |
8511 | else |
8512 | { | |
8513 | if (! elfcore_grok_note (abfd, &in)) | |
8514 | goto error; | |
8515 | } | |
252b5132 RH |
8516 | |
8517 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8518 | } | |
8519 | ||
8520 | free (buf); | |
b34976b6 | 8521 | return TRUE; |
252b5132 | 8522 | } |
98d8431c JB |
8523 | \f |
8524 | /* Providing external access to the ELF program header table. */ | |
8525 | ||
8526 | /* Return an upper bound on the number of bytes required to store a | |
8527 | copy of ABFD's program header table entries. Return -1 if an error | |
8528 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8529 | |
98d8431c | 8530 | long |
217aa764 | 8531 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8532 | { |
8533 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8534 | { | |
8535 | bfd_set_error (bfd_error_wrong_format); | |
8536 | return -1; | |
8537 | } | |
8538 | ||
936e320b | 8539 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8540 | } |
8541 | ||
98d8431c JB |
8542 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8543 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8544 | defined in include/elf/internal.h. To find out how large the | |
8545 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8546 | ||
8547 | Return the number of program header table entries read, or -1 if an | |
8548 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8549 | |
98d8431c | 8550 | int |
217aa764 | 8551 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8552 | { |
8553 | int num_phdrs; | |
8554 | ||
8555 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8556 | { | |
8557 | bfd_set_error (bfd_error_wrong_format); | |
8558 | return -1; | |
8559 | } | |
8560 | ||
8561 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8562 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8563 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8564 | ||
8565 | return num_phdrs; | |
8566 | } | |
ae4221d7 L |
8567 | |
8568 | void | |
217aa764 | 8569 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8570 | { |
d3b05f8d | 8571 | #ifdef BFD64 |
ae4221d7 L |
8572 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8573 | ||
8574 | i_ehdrp = elf_elfheader (abfd); | |
8575 | if (i_ehdrp == NULL) | |
8576 | sprintf_vma (buf, value); | |
8577 | else | |
8578 | { | |
8579 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8580 | { |
ae4221d7 | 8581 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8582 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8583 | #else |
cc55aec9 AM |
8584 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8585 | _bfd_int64_low (value)); | |
ae4221d7 | 8586 | #endif |
cc55aec9 | 8587 | } |
ae4221d7 L |
8588 | else |
8589 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8590 | } | |
d3b05f8d L |
8591 | #else |
8592 | sprintf_vma (buf, value); | |
8593 | #endif | |
ae4221d7 L |
8594 | } |
8595 | ||
8596 | void | |
217aa764 | 8597 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8598 | { |
d3b05f8d | 8599 | #ifdef BFD64 |
ae4221d7 L |
8600 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8601 | ||
8602 | i_ehdrp = elf_elfheader (abfd); | |
8603 | if (i_ehdrp == NULL) | |
8604 | fprintf_vma ((FILE *) stream, value); | |
8605 | else | |
8606 | { | |
8607 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8608 | { |
ae4221d7 | 8609 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8610 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8611 | #else |
cc55aec9 AM |
8612 | fprintf ((FILE *) stream, "%08lx%08lx", |
8613 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8614 | #endif |
cc55aec9 | 8615 | } |
ae4221d7 L |
8616 | else |
8617 | fprintf ((FILE *) stream, "%08lx", | |
8618 | (unsigned long) (value & 0xffffffff)); | |
8619 | } | |
d3b05f8d L |
8620 | #else |
8621 | fprintf_vma ((FILE *) stream, value); | |
8622 | #endif | |
ae4221d7 | 8623 | } |
db6751f2 JJ |
8624 | |
8625 | enum elf_reloc_type_class | |
217aa764 | 8626 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8627 | { |
8628 | return reloc_class_normal; | |
8629 | } | |
f8df10f4 | 8630 | |
47d9a591 | 8631 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8632 | relocation against a local symbol. */ |
8633 | ||
8634 | bfd_vma | |
217aa764 AM |
8635 | _bfd_elf_rela_local_sym (bfd *abfd, |
8636 | Elf_Internal_Sym *sym, | |
8517fae7 | 8637 | asection **psec, |
217aa764 | 8638 | Elf_Internal_Rela *rel) |
f8df10f4 | 8639 | { |
8517fae7 | 8640 | asection *sec = *psec; |
f8df10f4 JJ |
8641 | bfd_vma relocation; |
8642 | ||
8643 | relocation = (sec->output_section->vma | |
8644 | + sec->output_offset | |
8645 | + sym->st_value); | |
8646 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8647 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8648 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8649 | { |
f8df10f4 | 8650 | rel->r_addend = |
8517fae7 | 8651 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8652 | elf_section_data (sec)->sec_info, |
753731ee AM |
8653 | sym->st_value + rel->r_addend); |
8654 | if (sec != *psec) | |
8655 | { | |
8656 | /* If we have changed the section, and our original section is | |
8657 | marked with SEC_EXCLUDE, it means that the original | |
8658 | SEC_MERGE section has been completely subsumed in some | |
8659 | other SEC_MERGE section. In this case, we need to leave | |
8660 | some info around for --emit-relocs. */ | |
8661 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8662 | sec->kept_section = *psec; | |
8663 | sec = *psec; | |
8664 | } | |
8517fae7 AM |
8665 | rel->r_addend -= relocation; |
8666 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8667 | } |
8668 | return relocation; | |
8669 | } | |
c629eae0 JJ |
8670 | |
8671 | bfd_vma | |
217aa764 AM |
8672 | _bfd_elf_rel_local_sym (bfd *abfd, |
8673 | Elf_Internal_Sym *sym, | |
8674 | asection **psec, | |
8675 | bfd_vma addend) | |
47d9a591 | 8676 | { |
c629eae0 JJ |
8677 | asection *sec = *psec; |
8678 | ||
68bfbfcc | 8679 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8680 | return sym->st_value + addend; |
8681 | ||
8682 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8683 | elf_section_data (sec)->sec_info, |
753731ee | 8684 | sym->st_value + addend); |
c629eae0 JJ |
8685 | } |
8686 | ||
8687 | bfd_vma | |
217aa764 | 8688 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8689 | struct bfd_link_info *info, |
217aa764 AM |
8690 | asection *sec, |
8691 | bfd_vma offset) | |
c629eae0 | 8692 | { |
68bfbfcc | 8693 | switch (sec->sec_info_type) |
65765700 JJ |
8694 | { |
8695 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8696 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8697 | offset); | |
65765700 | 8698 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8699 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8700 | default: |
8701 | return offset; | |
8702 | } | |
c629eae0 | 8703 | } |
3333a7c3 RM |
8704 | \f |
8705 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8706 | reconstruct an ELF file by reading the segments out of remote memory | |
8707 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8708 | points to. If not null, *LOADBASEP is filled in with the difference | |
8709 | between the VMAs from which the segments were read, and the VMAs the | |
8710 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8711 | ||
8712 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8713 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8714 | should return zero on success or an `errno' code on failure. TEMPL must | |
8715 | be a BFD for an ELF target with the word size and byte order found in | |
8716 | the remote memory. */ | |
8717 | ||
8718 | bfd * | |
217aa764 AM |
8719 | bfd_elf_bfd_from_remote_memory |
8720 | (bfd *templ, | |
8721 | bfd_vma ehdr_vma, | |
8722 | bfd_vma *loadbasep, | |
f075ee0c | 8723 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8724 | { |
8725 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8726 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8727 | } | |
4c45e5c9 JJ |
8728 | \f |
8729 | long | |
c9727e01 AM |
8730 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8731 | long symcount ATTRIBUTE_UNUSED, | |
8732 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8733 | long dynsymcount, |
c9727e01 AM |
8734 | asymbol **dynsyms, |
8735 | asymbol **ret) | |
4c45e5c9 JJ |
8736 | { |
8737 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8738 | asection *relplt; | |
8739 | asymbol *s; | |
8740 | const char *relplt_name; | |
8741 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8742 | arelent *p; | |
8743 | long count, i, n; | |
8744 | size_t size; | |
8745 | Elf_Internal_Shdr *hdr; | |
8746 | char *names; | |
8747 | asection *plt; | |
8748 | ||
8615f3f2 AM |
8749 | *ret = NULL; |
8750 | ||
90e3cdf2 JJ |
8751 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8752 | return 0; | |
8753 | ||
8615f3f2 AM |
8754 | if (dynsymcount <= 0) |
8755 | return 0; | |
8756 | ||
4c45e5c9 JJ |
8757 | if (!bed->plt_sym_val) |
8758 | return 0; | |
8759 | ||
8760 | relplt_name = bed->relplt_name; | |
8761 | if (relplt_name == NULL) | |
8762 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8763 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8764 | if (relplt == NULL) | |
8765 | return 0; | |
8766 | ||
8767 | hdr = &elf_section_data (relplt)->this_hdr; | |
8768 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8769 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8770 | return 0; | |
8771 | ||
8772 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8773 | if (plt == NULL) | |
8774 | return 0; | |
8775 | ||
8776 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8777 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8778 | return -1; |
8779 | ||
eea6121a | 8780 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8781 | size = count * sizeof (asymbol); |
8782 | p = relplt->relocation; | |
8783 | for (i = 0; i < count; i++, s++, p++) | |
8784 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8785 | ||
8786 | s = *ret = bfd_malloc (size); | |
8787 | if (s == NULL) | |
8788 | return -1; | |
8789 | ||
8790 | names = (char *) (s + count); | |
8791 | p = relplt->relocation; | |
8792 | n = 0; | |
8793 | for (i = 0; i < count; i++, s++, p++) | |
8794 | { | |
8795 | size_t len; | |
8796 | bfd_vma addr; | |
8797 | ||
8798 | addr = bed->plt_sym_val (i, plt, p); | |
8799 | if (addr == (bfd_vma) -1) | |
8800 | continue; | |
8801 | ||
8802 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8803 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8804 | we are defining a symbol, ensure one of them is set. */ | |
8805 | if ((s->flags & BSF_LOCAL) == 0) | |
8806 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8807 | s->section = plt; |
8808 | s->value = addr - plt->vma; | |
8809 | s->name = names; | |
8810 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8811 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8812 | names += len; | |
8813 | memcpy (names, "@plt", sizeof ("@plt")); | |
8814 | names += sizeof ("@plt"); | |
8815 | ++n; | |
8816 | } | |
8817 | ||
8818 | return n; | |
8819 | } | |
3d7f7666 | 8820 | |
c15f73f9 | 8821 | struct elf_symbuf_symbol |
3d7f7666 | 8822 | { |
c15f73f9 JJ |
8823 | unsigned long st_name; /* Symbol name, index in string tbl */ |
8824 | unsigned char st_info; /* Type and binding attributes */ | |
8825 | unsigned char st_other; /* Visibilty, and target specific */ | |
8826 | }; | |
3d7f7666 | 8827 | |
c15f73f9 JJ |
8828 | struct elf_symbuf_head |
8829 | { | |
8830 | struct elf_symbuf_symbol *ssym; | |
8831 | bfd_size_type count; | |
8832 | unsigned int st_shndx; | |
8833 | }; | |
3d7f7666 L |
8834 | |
8835 | struct elf_symbol | |
8836 | { | |
c15f73f9 JJ |
8837 | union |
8838 | { | |
8839 | Elf_Internal_Sym *isym; | |
8840 | struct elf_symbuf_symbol *ssym; | |
8841 | } u; | |
3d7f7666 L |
8842 | const char *name; |
8843 | }; | |
8844 | ||
c15f73f9 JJ |
8845 | /* Sort references to symbols by ascending section number. */ |
8846 | ||
8847 | static int | |
8848 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8849 | { | |
8850 | const Elf_Internal_Sym *s1 = *(const Elf_Internal_Sym **) arg1; | |
8851 | const Elf_Internal_Sym *s2 = *(const Elf_Internal_Sym **) arg2; | |
8852 | ||
8853 | return s1->st_shndx - s2->st_shndx; | |
8854 | } | |
8855 | ||
3d7f7666 L |
8856 | static int |
8857 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8858 | { | |
8859 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8860 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8861 | return strcmp (s1->name, s2->name); | |
8862 | } | |
8863 | ||
c15f73f9 JJ |
8864 | static struct elf_symbuf_head * |
8865 | elf_create_symbuf (bfd_size_type symcount, Elf_Internal_Sym *isymbuf) | |
8866 | { | |
8867 | Elf_Internal_Sym **ind, **indbufend, **indbuf | |
8868 | = bfd_malloc2 (symcount, sizeof (*indbuf)); | |
8869 | struct elf_symbuf_symbol *ssym; | |
8870 | struct elf_symbuf_head *ssymbuf, *ssymhead; | |
8871 | bfd_size_type i, shndx_count; | |
8872 | ||
8873 | if (indbuf == NULL) | |
8874 | return NULL; | |
8875 | ||
8876 | for (ind = indbuf, i = 0; i < symcount; i++) | |
8877 | if (isymbuf[i].st_shndx != SHN_UNDEF) | |
8878 | *ind++ = &isymbuf[i]; | |
8879 | indbufend = ind; | |
8880 | ||
8881 | qsort (indbuf, indbufend - indbuf, sizeof (Elf_Internal_Sym *), | |
8882 | elf_sort_elf_symbol); | |
8883 | ||
8884 | shndx_count = 0; | |
8885 | if (indbufend > indbuf) | |
8886 | for (ind = indbuf, shndx_count++; ind < indbufend - 1; ind++) | |
8887 | if (ind[0]->st_shndx != ind[1]->st_shndx) | |
8888 | shndx_count++; | |
8889 | ||
8890 | ssymbuf = bfd_malloc ((shndx_count + 1) * sizeof (*ssymbuf) | |
8891 | + (indbufend - indbuf) * sizeof (*ssymbuf)); | |
8892 | if (ssymbuf == NULL) | |
8893 | { | |
8894 | free (indbuf); | |
8895 | return NULL; | |
8896 | } | |
8897 | ||
8898 | ssym = (struct elf_symbuf_symbol *) (ssymbuf + shndx_count); | |
8899 | ssymbuf->ssym = NULL; | |
8900 | ssymbuf->count = shndx_count; | |
8901 | ssymbuf->st_shndx = 0; | |
8902 | for (ssymhead = ssymbuf, ind = indbuf; ind < indbufend; ssym++, ind++) | |
8903 | { | |
8904 | if (ind == indbuf || ssymhead->st_shndx != (*ind)->st_shndx) | |
8905 | { | |
8906 | ssymhead++; | |
8907 | ssymhead->ssym = ssym; | |
8908 | ssymhead->count = 0; | |
8909 | ssymhead->st_shndx = (*ind)->st_shndx; | |
8910 | } | |
8911 | ssym->st_name = (*ind)->st_name; | |
8912 | ssym->st_info = (*ind)->st_info; | |
8913 | ssym->st_other = (*ind)->st_other; | |
8914 | ssymhead->count++; | |
8915 | } | |
8916 | BFD_ASSERT ((bfd_size_type) (ssymhead - ssymbuf) == shndx_count); | |
8917 | ||
8918 | free (indbuf); | |
8919 | return ssymbuf; | |
8920 | } | |
8921 | ||
3d7f7666 L |
8922 | /* Check if 2 sections define the same set of local and global |
8923 | symbols. */ | |
8924 | ||
8925 | bfd_boolean | |
c0f00686 L |
8926 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2, |
8927 | struct bfd_link_info *info) | |
3d7f7666 L |
8928 | { |
8929 | bfd *bfd1, *bfd2; | |
8930 | const struct elf_backend_data *bed1, *bed2; | |
8931 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8932 | bfd_size_type symcount1, symcount2; | |
8933 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
c15f73f9 JJ |
8934 | struct elf_symbuf_head *ssymbuf1, *ssymbuf2; |
8935 | Elf_Internal_Sym *isym, *isymend; | |
8936 | struct elf_symbol *symtable1 = NULL, *symtable2 = NULL; | |
3d7f7666 L |
8937 | bfd_size_type count1, count2, i; |
8938 | int shndx1, shndx2; | |
8939 | bfd_boolean result; | |
8940 | ||
8941 | bfd1 = sec1->owner; | |
8942 | bfd2 = sec2->owner; | |
8943 | ||
8944 | /* If both are .gnu.linkonce sections, they have to have the same | |
8945 | section name. */ | |
0112cd26 NC |
8946 | if (CONST_STRNEQ (sec1->name, ".gnu.linkonce") |
8947 | && CONST_STRNEQ (sec2->name, ".gnu.linkonce")) | |
3d7f7666 L |
8948 | return strcmp (sec1->name + sizeof ".gnu.linkonce", |
8949 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8950 | ||
8951 | /* Both sections have to be in ELF. */ | |
8952 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8953 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8954 | return FALSE; | |
8955 | ||
8956 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8957 | return FALSE; | |
8958 | ||
8959 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8960 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8961 | { | |
8962 | /* If both are members of section groups, they have to have the | |
8963 | same group name. */ | |
8964 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8965 | return FALSE; | |
8966 | } | |
8967 | ||
8968 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8969 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8970 | if (shndx1 == -1 || shndx2 == -1) | |
8971 | return FALSE; | |
8972 | ||
8973 | bed1 = get_elf_backend_data (bfd1); | |
8974 | bed2 = get_elf_backend_data (bfd2); | |
8975 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8976 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8977 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8978 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8979 | ||
8980 | if (symcount1 == 0 || symcount2 == 0) | |
8981 | return FALSE; | |
8982 | ||
3d7f7666 | 8983 | result = FALSE; |
c15f73f9 JJ |
8984 | isymbuf1 = NULL; |
8985 | isymbuf2 = NULL; | |
8986 | ssymbuf1 = elf_tdata (bfd1)->symbuf; | |
8987 | ssymbuf2 = elf_tdata (bfd2)->symbuf; | |
3d7f7666 | 8988 | |
c15f73f9 | 8989 | if (ssymbuf1 == NULL) |
c0f00686 L |
8990 | { |
8991 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8992 | NULL, NULL, NULL); | |
8993 | if (isymbuf1 == NULL) | |
8994 | goto done; | |
c15f73f9 | 8995 | |
c0f00686 | 8996 | if (!info->reduce_memory_overheads) |
c15f73f9 JJ |
8997 | elf_tdata (bfd1)->symbuf = ssymbuf1 |
8998 | = elf_create_symbuf (symcount1, isymbuf1); | |
c0f00686 L |
8999 | } |
9000 | ||
c15f73f9 | 9001 | if (ssymbuf1 == NULL || ssymbuf2 == NULL) |
c0f00686 L |
9002 | { |
9003 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
9004 | NULL, NULL, NULL); | |
9005 | if (isymbuf2 == NULL) | |
9006 | goto done; | |
c15f73f9 JJ |
9007 | |
9008 | if (ssymbuf1 != NULL && !info->reduce_memory_overheads) | |
9009 | elf_tdata (bfd2)->symbuf = ssymbuf2 | |
9010 | = elf_create_symbuf (symcount2, isymbuf2); | |
c0f00686 | 9011 | } |
3d7f7666 | 9012 | |
c15f73f9 | 9013 | if (ssymbuf1 != NULL && ssymbuf2 != NULL) |
3d7f7666 | 9014 | { |
c15f73f9 JJ |
9015 | /* Optimized faster version. */ |
9016 | bfd_size_type lo, hi, mid; | |
9017 | struct elf_symbol *symp; | |
9018 | struct elf_symbuf_symbol *ssym, *ssymend; | |
9019 | ||
9020 | lo = 0; | |
9021 | hi = ssymbuf1->count; | |
9022 | ssymbuf1++; | |
9023 | count1 = 0; | |
9024 | while (lo < hi) | |
3d7f7666 | 9025 | { |
c15f73f9 JJ |
9026 | mid = (lo + hi) / 2; |
9027 | if ((unsigned int) shndx1 < ssymbuf1[mid].st_shndx) | |
9028 | hi = mid; | |
9029 | else if ((unsigned int) shndx1 > ssymbuf1[mid].st_shndx) | |
9030 | lo = mid + 1; | |
9031 | else | |
9032 | { | |
9033 | count1 = ssymbuf1[mid].count; | |
9034 | ssymbuf1 += mid; | |
9035 | break; | |
9036 | } | |
3d7f7666 L |
9037 | } |
9038 | ||
c15f73f9 JJ |
9039 | lo = 0; |
9040 | hi = ssymbuf2->count; | |
9041 | ssymbuf2++; | |
9042 | count2 = 0; | |
9043 | while (lo < hi) | |
9044 | { | |
9045 | mid = (lo + hi) / 2; | |
9046 | if ((unsigned int) shndx2 < ssymbuf2[mid].st_shndx) | |
9047 | hi = mid; | |
9048 | else if ((unsigned int) shndx2 > ssymbuf2[mid].st_shndx) | |
9049 | lo = mid + 1; | |
9050 | else | |
9051 | { | |
9052 | count2 = ssymbuf2[mid].count; | |
9053 | ssymbuf2 += mid; | |
9054 | break; | |
9055 | } | |
9056 | } | |
3d7f7666 | 9057 | |
c15f73f9 JJ |
9058 | if (count1 == 0 || count2 == 0 || count1 != count2) |
9059 | goto done; | |
9060 | ||
9061 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
9062 | symtable2 = bfd_malloc (count2 * sizeof (struct elf_symbol)); | |
9063 | if (symtable1 == NULL || symtable2 == NULL) | |
9064 | goto done; | |
9065 | ||
9066 | symp = symtable1; | |
9067 | for (ssym = ssymbuf1->ssym, ssymend = ssym + count1; | |
9068 | ssym < ssymend; ssym++, symp++) | |
3d7f7666 | 9069 | { |
c15f73f9 JJ |
9070 | symp->u.ssym = ssym; |
9071 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
9072 | hdr1->sh_link, | |
9073 | ssym->st_name); | |
3d7f7666 L |
9074 | } |
9075 | ||
c15f73f9 JJ |
9076 | symp = symtable2; |
9077 | for (ssym = ssymbuf2->ssym, ssymend = ssym + count2; | |
9078 | ssym < ssymend; ssym++, symp++) | |
9079 | { | |
9080 | symp->u.ssym = ssym; | |
9081 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
9082 | hdr2->sh_link, | |
9083 | ssym->st_name); | |
9084 | } | |
9085 | ||
9086 | /* Sort symbol by name. */ | |
9087 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
9088 | elf_sym_name_compare); | |
9089 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
9090 | elf_sym_name_compare); | |
9091 | ||
9092 | for (i = 0; i < count1; i++) | |
9093 | /* Two symbols must have the same binding, type and name. */ | |
9094 | if (symtable1 [i].u.ssym->st_info != symtable2 [i].u.ssym->st_info | |
9095 | || symtable1 [i].u.ssym->st_other != symtable2 [i].u.ssym->st_other | |
9096 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
9097 | goto done; | |
9098 | ||
9099 | result = TRUE; | |
9100 | goto done; | |
3d7f7666 L |
9101 | } |
9102 | ||
c15f73f9 JJ |
9103 | symtable1 = bfd_malloc (symcount1 * sizeof (struct elf_symbol)); |
9104 | symtable2 = bfd_malloc (symcount2 * sizeof (struct elf_symbol)); | |
9105 | if (symtable1 == NULL || symtable2 == NULL) | |
3d7f7666 L |
9106 | goto done; |
9107 | ||
c15f73f9 JJ |
9108 | /* Count definitions in the section. */ |
9109 | count1 = 0; | |
9110 | for (isym = isymbuf1, isymend = isym + symcount1; isym < isymend; isym++) | |
9111 | if (isym->st_shndx == (unsigned int) shndx1) | |
9112 | symtable1[count1++].u.isym = isym; | |
3d7f7666 | 9113 | |
c15f73f9 JJ |
9114 | count2 = 0; |
9115 | for (isym = isymbuf2, isymend = isym + symcount2; isym < isymend; isym++) | |
9116 | if (isym->st_shndx == (unsigned int) shndx2) | |
9117 | symtable2[count2++].u.isym = isym; | |
9118 | ||
9119 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
3d7f7666 L |
9120 | goto done; |
9121 | ||
c15f73f9 JJ |
9122 | for (i = 0; i < count1; i++) |
9123 | symtable1[i].name | |
9124 | = bfd_elf_string_from_elf_section (bfd1, hdr1->sh_link, | |
9125 | symtable1[i].u.isym->st_name); | |
9126 | ||
9127 | for (i = 0; i < count2; i++) | |
9128 | symtable2[i].name | |
9129 | = bfd_elf_string_from_elf_section (bfd2, hdr2->sh_link, | |
9130 | symtable2[i].u.isym->st_name); | |
9131 | ||
3d7f7666 L |
9132 | /* Sort symbol by name. */ |
9133 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
9134 | elf_sym_name_compare); | |
9135 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
9136 | elf_sym_name_compare); | |
9137 | ||
9138 | for (i = 0; i < count1; i++) | |
9139 | /* Two symbols must have the same binding, type and name. */ | |
c15f73f9 JJ |
9140 | if (symtable1 [i].u.isym->st_info != symtable2 [i].u.isym->st_info |
9141 | || symtable1 [i].u.isym->st_other != symtable2 [i].u.isym->st_other | |
3d7f7666 L |
9142 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) |
9143 | goto done; | |
9144 | ||
9145 | result = TRUE; | |
9146 | ||
9147 | done: | |
9148 | if (symtable1) | |
9149 | free (symtable1); | |
9150 | if (symtable2) | |
9151 | free (symtable2); | |
c15f73f9 JJ |
9152 | if (isymbuf1) |
9153 | free (isymbuf1); | |
9154 | if (isymbuf2) | |
9155 | free (isymbuf2); | |
3d7f7666 L |
9156 | |
9157 | return result; | |
9158 | } | |
3b22753a L |
9159 | |
9160 | /* It is only used by x86-64 so far. */ | |
9161 | asection _bfd_elf_large_com_section | |
9162 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 9163 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 L |
9164 | |
9165 | /* Return TRUE if 2 section types are compatible. */ | |
9166 | ||
9167 | bfd_boolean | |
9168 | _bfd_elf_match_sections_by_type (bfd *abfd, const asection *asec, | |
9169 | bfd *bbfd, const asection *bsec) | |
9170 | { | |
9171 | if (asec == NULL | |
9172 | || bsec == NULL | |
9173 | || abfd->xvec->flavour != bfd_target_elf_flavour | |
9174 | || bbfd->xvec->flavour != bfd_target_elf_flavour) | |
9175 | return TRUE; | |
9176 | ||
9177 | return elf_section_type (asec) == elf_section_type (bsec); | |
9178 | } | |
d1036acb L |
9179 | |
9180 | void | |
9181 | _bfd_elf_set_osabi (bfd * abfd, | |
9182 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
9183 | { | |
9184 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
9185 | ||
9186 | i_ehdrp = elf_elfheader (abfd); | |
9187 | ||
9188 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
9189 | } | |
fcb93ecf PB |
9190 | |
9191 | ||
9192 | /* Return TRUE for ELF symbol types that represent functions. | |
9193 | This is the default version of this function, which is sufficient for | |
9194 | most targets. It returns true if TYPE is STT_FUNC. */ | |
9195 | ||
9196 | bfd_boolean | |
9197 | _bfd_elf_is_function_type (unsigned int type) | |
9198 | { | |
9199 | return (type == STT_FUNC); | |
9200 | } |