Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
fad2f28d | 4 | 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
1b74d094 BW |
22 | /* |
23 | SECTION | |
252b5132 RH |
24 | ELF backends |
25 | ||
26 | BFD support for ELF formats is being worked on. | |
27 | Currently, the best supported back ends are for sparc and i386 | |
28 | (running svr4 or Solaris 2). | |
29 | ||
30 | Documentation of the internals of the support code still needs | |
31 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 32 | haven't bothered yet. */ |
252b5132 | 33 | |
7ee38065 MS |
34 | /* For sparc64-cross-sparc32. */ |
35 | #define _SYSCALL32 | |
252b5132 RH |
36 | #include "bfd.h" |
37 | #include "sysdep.h" | |
38 | #include "bfdlink.h" | |
39 | #include "libbfd.h" | |
40 | #define ARCH_SIZE 0 | |
41 | #include "elf-bfd.h" | |
e0e8c97f | 42 | #include "libiberty.h" |
252b5132 | 43 | |
217aa764 | 44 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 45 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
46 | static bfd_boolean prep_headers (bfd *); |
47 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
48 | static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ; | |
50b2bdb7 | 49 | |
252b5132 RH |
50 | /* Swap version information in and out. The version information is |
51 | currently size independent. If that ever changes, this code will | |
52 | need to move into elfcode.h. */ | |
53 | ||
54 | /* Swap in a Verdef structure. */ | |
55 | ||
56 | void | |
217aa764 AM |
57 | _bfd_elf_swap_verdef_in (bfd *abfd, |
58 | const Elf_External_Verdef *src, | |
59 | Elf_Internal_Verdef *dst) | |
252b5132 | 60 | { |
dc810e39 AM |
61 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
62 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
63 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
64 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
65 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
66 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
67 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
68 | } |
69 | ||
70 | /* Swap out a Verdef structure. */ | |
71 | ||
72 | void | |
217aa764 AM |
73 | _bfd_elf_swap_verdef_out (bfd *abfd, |
74 | const Elf_Internal_Verdef *src, | |
75 | Elf_External_Verdef *dst) | |
252b5132 | 76 | { |
dc810e39 AM |
77 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
78 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
79 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
80 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
81 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
82 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
83 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
84 | } |
85 | ||
86 | /* Swap in a Verdaux structure. */ | |
87 | ||
88 | void | |
217aa764 AM |
89 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
90 | const Elf_External_Verdaux *src, | |
91 | Elf_Internal_Verdaux *dst) | |
252b5132 | 92 | { |
dc810e39 AM |
93 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
94 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
95 | } |
96 | ||
97 | /* Swap out a Verdaux structure. */ | |
98 | ||
99 | void | |
217aa764 AM |
100 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
101 | const Elf_Internal_Verdaux *src, | |
102 | Elf_External_Verdaux *dst) | |
252b5132 | 103 | { |
dc810e39 AM |
104 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
105 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
106 | } |
107 | ||
108 | /* Swap in a Verneed structure. */ | |
109 | ||
110 | void | |
217aa764 AM |
111 | _bfd_elf_swap_verneed_in (bfd *abfd, |
112 | const Elf_External_Verneed *src, | |
113 | Elf_Internal_Verneed *dst) | |
252b5132 | 114 | { |
dc810e39 AM |
115 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
116 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
117 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
118 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
119 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
120 | } |
121 | ||
122 | /* Swap out a Verneed structure. */ | |
123 | ||
124 | void | |
217aa764 AM |
125 | _bfd_elf_swap_verneed_out (bfd *abfd, |
126 | const Elf_Internal_Verneed *src, | |
127 | Elf_External_Verneed *dst) | |
252b5132 | 128 | { |
dc810e39 AM |
129 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
130 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
131 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
132 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
133 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
134 | } |
135 | ||
136 | /* Swap in a Vernaux structure. */ | |
137 | ||
138 | void | |
217aa764 AM |
139 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
140 | const Elf_External_Vernaux *src, | |
141 | Elf_Internal_Vernaux *dst) | |
252b5132 | 142 | { |
dc810e39 AM |
143 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
144 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
145 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
146 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
147 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
148 | } |
149 | ||
150 | /* Swap out a Vernaux structure. */ | |
151 | ||
152 | void | |
217aa764 AM |
153 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
154 | const Elf_Internal_Vernaux *src, | |
155 | Elf_External_Vernaux *dst) | |
252b5132 | 156 | { |
dc810e39 AM |
157 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
158 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
159 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
160 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
161 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
162 | } |
163 | ||
164 | /* Swap in a Versym structure. */ | |
165 | ||
166 | void | |
217aa764 AM |
167 | _bfd_elf_swap_versym_in (bfd *abfd, |
168 | const Elf_External_Versym *src, | |
169 | Elf_Internal_Versym *dst) | |
252b5132 | 170 | { |
dc810e39 | 171 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
172 | } |
173 | ||
174 | /* Swap out a Versym structure. */ | |
175 | ||
176 | void | |
217aa764 AM |
177 | _bfd_elf_swap_versym_out (bfd *abfd, |
178 | const Elf_Internal_Versym *src, | |
179 | Elf_External_Versym *dst) | |
252b5132 | 180 | { |
dc810e39 | 181 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
182 | } |
183 | ||
184 | /* Standard ELF hash function. Do not change this function; you will | |
185 | cause invalid hash tables to be generated. */ | |
3a99b017 | 186 | |
252b5132 | 187 | unsigned long |
217aa764 | 188 | bfd_elf_hash (const char *namearg) |
252b5132 | 189 | { |
3a99b017 | 190 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
191 | unsigned long h = 0; |
192 | unsigned long g; | |
193 | int ch; | |
194 | ||
195 | while ((ch = *name++) != '\0') | |
196 | { | |
197 | h = (h << 4) + ch; | |
198 | if ((g = (h & 0xf0000000)) != 0) | |
199 | { | |
200 | h ^= g >> 24; | |
201 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
202 | this case and on some machines one insn instead of two. */ | |
203 | h ^= g; | |
204 | } | |
205 | } | |
32dfa85d | 206 | return h & 0xffffffff; |
252b5132 RH |
207 | } |
208 | ||
fdc90cb4 JJ |
209 | /* DT_GNU_HASH hash function. Do not change this function; you will |
210 | cause invalid hash tables to be generated. */ | |
211 | ||
212 | unsigned long | |
213 | bfd_elf_gnu_hash (const char *namearg) | |
214 | { | |
215 | const unsigned char *name = (const unsigned char *) namearg; | |
216 | unsigned long h = 5381; | |
217 | unsigned char ch; | |
218 | ||
219 | while ((ch = *name++) != '\0') | |
220 | h = (h << 5) + h + ch; | |
221 | return h & 0xffffffff; | |
222 | } | |
223 | ||
b34976b6 | 224 | bfd_boolean |
217aa764 | 225 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 226 | { |
62d7a5f6 AM |
227 | if (abfd->tdata.any == NULL) |
228 | { | |
229 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); | |
230 | if (abfd->tdata.any == NULL) | |
231 | return FALSE; | |
232 | } | |
233 | ||
234 | elf_tdata (abfd)->program_header_size = (bfd_size_type) -1; | |
252b5132 | 235 | |
b34976b6 | 236 | return TRUE; |
252b5132 RH |
237 | } |
238 | ||
b34976b6 | 239 | bfd_boolean |
217aa764 | 240 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 241 | { |
c044fabd | 242 | /* I think this can be done just like an object file. */ |
252b5132 RH |
243 | return bfd_elf_mkobject (abfd); |
244 | } | |
245 | ||
246 | char * | |
217aa764 | 247 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
248 | { |
249 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 250 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
251 | file_ptr offset; |
252 | bfd_size_type shstrtabsize; | |
252b5132 RH |
253 | |
254 | i_shdrp = elf_elfsections (abfd); | |
255 | if (i_shdrp == 0 || i_shdrp[shindex] == 0) | |
f075ee0c | 256 | return NULL; |
252b5132 | 257 | |
f075ee0c | 258 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
259 | if (shstrtab == NULL) |
260 | { | |
c044fabd | 261 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
262 | offset = i_shdrp[shindex]->sh_offset; |
263 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
264 | |
265 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
266 | in case the string table is not terminated. */ | |
267 | if (shstrtabsize + 1 == 0 | |
268 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
269 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
270 | shstrtab = NULL; | |
271 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
272 | { | |
273 | if (bfd_get_error () != bfd_error_system_call) | |
274 | bfd_set_error (bfd_error_file_truncated); | |
275 | shstrtab = NULL; | |
276 | } | |
277 | else | |
278 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 279 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 280 | } |
f075ee0c | 281 | return (char *) shstrtab; |
252b5132 RH |
282 | } |
283 | ||
284 | char * | |
217aa764 AM |
285 | bfd_elf_string_from_elf_section (bfd *abfd, |
286 | unsigned int shindex, | |
287 | unsigned int strindex) | |
252b5132 RH |
288 | { |
289 | Elf_Internal_Shdr *hdr; | |
290 | ||
291 | if (strindex == 0) | |
292 | return ""; | |
293 | ||
294 | hdr = elf_elfsections (abfd)[shindex]; | |
295 | ||
296 | if (hdr->contents == NULL | |
297 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
298 | return NULL; | |
299 | ||
300 | if (strindex >= hdr->sh_size) | |
301 | { | |
1b3a8575 | 302 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 303 | (*_bfd_error_handler) |
d003868e AM |
304 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
305 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 306 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 307 | ? ".shstrtab" |
1b3a8575 | 308 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
309 | return ""; |
310 | } | |
311 | ||
312 | return ((char *) hdr->contents) + strindex; | |
313 | } | |
314 | ||
6cdc0ccc AM |
315 | /* Read and convert symbols to internal format. |
316 | SYMCOUNT specifies the number of symbols to read, starting from | |
317 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
318 | are non-NULL, they are used to store the internal symbols, external | |
319 | symbols, and symbol section index extensions, respectively. */ | |
320 | ||
321 | Elf_Internal_Sym * | |
217aa764 AM |
322 | bfd_elf_get_elf_syms (bfd *ibfd, |
323 | Elf_Internal_Shdr *symtab_hdr, | |
324 | size_t symcount, | |
325 | size_t symoffset, | |
326 | Elf_Internal_Sym *intsym_buf, | |
327 | void *extsym_buf, | |
328 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
329 | { |
330 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 331 | void *alloc_ext; |
df622259 | 332 | const bfd_byte *esym; |
6cdc0ccc AM |
333 | Elf_External_Sym_Shndx *alloc_extshndx; |
334 | Elf_External_Sym_Shndx *shndx; | |
335 | Elf_Internal_Sym *isym; | |
336 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 337 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
338 | size_t extsym_size; |
339 | bfd_size_type amt; | |
340 | file_ptr pos; | |
341 | ||
342 | if (symcount == 0) | |
343 | return intsym_buf; | |
344 | ||
345 | /* Normal syms might have section extension entries. */ | |
346 | shndx_hdr = NULL; | |
347 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
348 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
349 | ||
350 | /* Read the symbols. */ | |
351 | alloc_ext = NULL; | |
352 | alloc_extshndx = NULL; | |
353 | bed = get_elf_backend_data (ibfd); | |
354 | extsym_size = bed->s->sizeof_sym; | |
355 | amt = symcount * extsym_size; | |
356 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
357 | if (extsym_buf == NULL) | |
358 | { | |
d0fb9a8d | 359 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
360 | extsym_buf = alloc_ext; |
361 | } | |
362 | if (extsym_buf == NULL | |
363 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
364 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
365 | { | |
366 | intsym_buf = NULL; | |
367 | goto out; | |
368 | } | |
369 | ||
370 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
371 | extshndx_buf = NULL; | |
372 | else | |
373 | { | |
374 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
375 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
376 | if (extshndx_buf == NULL) | |
377 | { | |
d0fb9a8d JJ |
378 | alloc_extshndx = bfd_malloc2 (symcount, |
379 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
380 | extshndx_buf = alloc_extshndx; |
381 | } | |
382 | if (extshndx_buf == NULL | |
383 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
384 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
385 | { | |
386 | intsym_buf = NULL; | |
387 | goto out; | |
388 | } | |
389 | } | |
390 | ||
391 | if (intsym_buf == NULL) | |
392 | { | |
d0fb9a8d | 393 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
394 | if (intsym_buf == NULL) |
395 | goto out; | |
396 | } | |
397 | ||
398 | /* Convert the symbols to internal form. */ | |
399 | isymend = intsym_buf + symcount; | |
400 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
401 | isym < isymend; | |
402 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
217aa764 | 403 | (*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym); |
6cdc0ccc AM |
404 | |
405 | out: | |
406 | if (alloc_ext != NULL) | |
407 | free (alloc_ext); | |
408 | if (alloc_extshndx != NULL) | |
409 | free (alloc_extshndx); | |
410 | ||
411 | return intsym_buf; | |
412 | } | |
413 | ||
5cab59f6 AM |
414 | /* Look up a symbol name. */ |
415 | const char * | |
be8dd2ca AM |
416 | bfd_elf_sym_name (bfd *abfd, |
417 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
418 | Elf_Internal_Sym *isym, |
419 | asection *sym_sec) | |
5cab59f6 | 420 | { |
26c61ae5 | 421 | const char *name; |
5cab59f6 | 422 | unsigned int iname = isym->st_name; |
be8dd2ca | 423 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 424 | |
138f35cc JJ |
425 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
426 | /* Check for a bogus st_shndx to avoid crashing. */ | |
427 | && isym->st_shndx < elf_numsections (abfd) | |
428 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
429 | { |
430 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
431 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
432 | } | |
433 | ||
26c61ae5 L |
434 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
435 | if (name == NULL) | |
436 | name = "(null)"; | |
437 | else if (sym_sec && *name == '\0') | |
438 | name = bfd_section_name (abfd, sym_sec); | |
439 | ||
440 | return name; | |
5cab59f6 AM |
441 | } |
442 | ||
dbb410c3 AM |
443 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
444 | sections. The first element is the flags, the rest are section | |
445 | pointers. */ | |
446 | ||
447 | typedef union elf_internal_group { | |
448 | Elf_Internal_Shdr *shdr; | |
449 | unsigned int flags; | |
450 | } Elf_Internal_Group; | |
451 | ||
b885599b AM |
452 | /* Return the name of the group signature symbol. Why isn't the |
453 | signature just a string? */ | |
454 | ||
455 | static const char * | |
217aa764 | 456 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 457 | { |
9dce4196 | 458 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
459 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
460 | Elf_External_Sym_Shndx eshndx; | |
461 | Elf_Internal_Sym isym; | |
b885599b | 462 | |
13792e9d L |
463 | /* First we need to ensure the symbol table is available. Make sure |
464 | that it is a symbol table section. */ | |
465 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
466 | if (hdr->sh_type != SHT_SYMTAB | |
467 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
468 | return NULL; |
469 | ||
9dce4196 AM |
470 | /* Go read the symbol. */ |
471 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
472 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
473 | &isym, esym, &eshndx) == NULL) | |
b885599b | 474 | return NULL; |
9dce4196 | 475 | |
26c61ae5 | 476 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
477 | } |
478 | ||
dbb410c3 AM |
479 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
480 | ||
b34976b6 | 481 | static bfd_boolean |
217aa764 | 482 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
483 | { |
484 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
485 | ||
486 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
487 | is set to -1 if there are no SHT_GROUP sections. */ | |
488 | if (num_group == 0) | |
489 | { | |
490 | unsigned int i, shnum; | |
491 | ||
492 | /* First count the number of groups. If we have a SHT_GROUP | |
493 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 494 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
495 | num_group = 0; |
496 | for (i = 0; i < shnum; i++) | |
497 | { | |
498 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
499 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
500 | num_group += 1; | |
501 | } | |
502 | ||
503 | if (num_group == 0) | |
20dbb49d L |
504 | { |
505 | num_group = (unsigned) -1; | |
506 | elf_tdata (abfd)->num_group = num_group; | |
507 | } | |
508 | else | |
dbb410c3 AM |
509 | { |
510 | /* We keep a list of elf section headers for group sections, | |
511 | so we can find them quickly. */ | |
20dbb49d | 512 | bfd_size_type amt; |
d0fb9a8d | 513 | |
20dbb49d | 514 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
515 | elf_tdata (abfd)->group_sect_ptr |
516 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 517 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 518 | return FALSE; |
dbb410c3 AM |
519 | |
520 | num_group = 0; | |
521 | for (i = 0; i < shnum; i++) | |
522 | { | |
523 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
524 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
525 | { | |
973ffd63 | 526 | unsigned char *src; |
dbb410c3 AM |
527 | Elf_Internal_Group *dest; |
528 | ||
529 | /* Add to list of sections. */ | |
530 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
531 | num_group += 1; | |
532 | ||
533 | /* Read the raw contents. */ | |
534 | BFD_ASSERT (sizeof (*dest) >= 4); | |
535 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
536 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
537 | sizeof (*dest) / 4); | |
dbb410c3 AM |
538 | if (shdr->contents == NULL |
539 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
540 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
541 | != shdr->sh_size)) | |
b34976b6 | 542 | return FALSE; |
dbb410c3 AM |
543 | |
544 | /* Translate raw contents, a flag word followed by an | |
545 | array of elf section indices all in target byte order, | |
546 | to the flag word followed by an array of elf section | |
547 | pointers. */ | |
548 | src = shdr->contents + shdr->sh_size; | |
549 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
550 | while (1) | |
551 | { | |
552 | unsigned int idx; | |
553 | ||
554 | src -= 4; | |
555 | --dest; | |
556 | idx = H_GET_32 (abfd, src); | |
557 | if (src == shdr->contents) | |
558 | { | |
559 | dest->flags = idx; | |
b885599b AM |
560 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
561 | shdr->bfd_section->flags | |
562 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
563 | break; |
564 | } | |
565 | if (idx >= shnum) | |
566 | { | |
567 | ((*_bfd_error_handler) | |
d003868e | 568 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
569 | idx = 0; |
570 | } | |
571 | dest->shdr = elf_elfsections (abfd)[idx]; | |
572 | } | |
573 | } | |
574 | } | |
575 | } | |
576 | } | |
577 | ||
578 | if (num_group != (unsigned) -1) | |
579 | { | |
580 | unsigned int i; | |
581 | ||
582 | for (i = 0; i < num_group; i++) | |
583 | { | |
584 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
585 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
586 | unsigned int n_elt = shdr->sh_size / 4; | |
587 | ||
588 | /* Look through this group's sections to see if current | |
589 | section is a member. */ | |
590 | while (--n_elt != 0) | |
591 | if ((++idx)->shdr == hdr) | |
592 | { | |
e0e8c97f | 593 | asection *s = NULL; |
dbb410c3 AM |
594 | |
595 | /* We are a member of this group. Go looking through | |
596 | other members to see if any others are linked via | |
597 | next_in_group. */ | |
598 | idx = (Elf_Internal_Group *) shdr->contents; | |
599 | n_elt = shdr->sh_size / 4; | |
600 | while (--n_elt != 0) | |
601 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 602 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
603 | break; |
604 | if (n_elt != 0) | |
605 | { | |
dbb410c3 AM |
606 | /* Snarf the group name from other member, and |
607 | insert current section in circular list. */ | |
945906ff AM |
608 | elf_group_name (newsect) = elf_group_name (s); |
609 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
610 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
611 | } |
612 | else | |
613 | { | |
dbb410c3 AM |
614 | const char *gname; |
615 | ||
b885599b AM |
616 | gname = group_signature (abfd, shdr); |
617 | if (gname == NULL) | |
b34976b6 | 618 | return FALSE; |
945906ff | 619 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
620 | |
621 | /* Start a circular list with one element. */ | |
945906ff | 622 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 623 | } |
b885599b | 624 | |
9dce4196 AM |
625 | /* If the group section has been created, point to the |
626 | new member. */ | |
dbb410c3 | 627 | if (shdr->bfd_section != NULL) |
945906ff | 628 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 629 | |
dbb410c3 AM |
630 | i = num_group - 1; |
631 | break; | |
632 | } | |
633 | } | |
634 | } | |
635 | ||
945906ff | 636 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 637 | { |
d003868e AM |
638 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
639 | abfd, newsect); | |
dbb410c3 | 640 | } |
b34976b6 | 641 | return TRUE; |
dbb410c3 AM |
642 | } |
643 | ||
3d7f7666 | 644 | bfd_boolean |
dd863624 | 645 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
646 | { |
647 | unsigned int i; | |
648 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
649 | bfd_boolean result = TRUE; | |
dd863624 L |
650 | asection *s; |
651 | ||
652 | /* Process SHF_LINK_ORDER. */ | |
653 | for (s = abfd->sections; s != NULL; s = s->next) | |
654 | { | |
655 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
656 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
657 | { | |
658 | unsigned int elfsec = this_hdr->sh_link; | |
659 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
660 | not set the sh_link or sh_info fields. Hence we could | |
661 | get the situation where elfsec is 0. */ | |
662 | if (elfsec == 0) | |
663 | { | |
664 | const struct elf_backend_data *bed | |
665 | = get_elf_backend_data (abfd); | |
666 | if (bed->link_order_error_handler) | |
667 | bed->link_order_error_handler | |
668 | (_("%B: warning: sh_link not set for section `%A'"), | |
669 | abfd, s); | |
670 | } | |
671 | else | |
672 | { | |
25bbc984 L |
673 | asection *link; |
674 | ||
dd863624 | 675 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
676 | |
677 | /* PR 1991, 2008: | |
678 | Some strip/objcopy may leave an incorrect value in | |
679 | sh_link. We don't want to proceed. */ | |
680 | link = this_hdr->bfd_section; | |
681 | if (link == NULL) | |
682 | { | |
683 | (*_bfd_error_handler) | |
684 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
685 | s->owner, s, elfsec); | |
686 | result = FALSE; | |
687 | } | |
688 | ||
689 | elf_linked_to_section (s) = link; | |
dd863624 L |
690 | } |
691 | } | |
692 | } | |
3d7f7666 | 693 | |
dd863624 | 694 | /* Process section groups. */ |
3d7f7666 L |
695 | if (num_group == (unsigned) -1) |
696 | return result; | |
697 | ||
698 | for (i = 0; i < num_group; i++) | |
699 | { | |
700 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
701 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
702 | unsigned int n_elt = shdr->sh_size / 4; | |
703 | ||
704 | while (--n_elt != 0) | |
705 | if ((++idx)->shdr->bfd_section) | |
706 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
707 | else if (idx->shdr->sh_type == SHT_RELA | |
708 | || idx->shdr->sh_type == SHT_REL) | |
709 | /* We won't include relocation sections in section groups in | |
710 | output object files. We adjust the group section size here | |
711 | so that relocatable link will work correctly when | |
712 | relocation sections are in section group in input object | |
713 | files. */ | |
714 | shdr->bfd_section->size -= 4; | |
715 | else | |
716 | { | |
717 | /* There are some unknown sections in the group. */ | |
718 | (*_bfd_error_handler) | |
d003868e AM |
719 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
720 | abfd, | |
3d7f7666 | 721 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
722 | bfd_elf_string_from_elf_section (abfd, |
723 | (elf_elfheader (abfd) | |
724 | ->e_shstrndx), | |
725 | idx->shdr->sh_name), | |
3d7f7666 L |
726 | shdr->bfd_section->name); |
727 | result = FALSE; | |
728 | } | |
729 | } | |
730 | return result; | |
731 | } | |
732 | ||
72adc230 AM |
733 | bfd_boolean |
734 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
735 | { | |
736 | return elf_next_in_group (sec) != NULL; | |
737 | } | |
738 | ||
252b5132 RH |
739 | /* Make a BFD section from an ELF section. We store a pointer to the |
740 | BFD section in the bfd_section field of the header. */ | |
741 | ||
b34976b6 | 742 | bfd_boolean |
217aa764 AM |
743 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
744 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
745 | const char *name, |
746 | int shindex) | |
252b5132 RH |
747 | { |
748 | asection *newsect; | |
749 | flagword flags; | |
9c5bfbb7 | 750 | const struct elf_backend_data *bed; |
252b5132 RH |
751 | |
752 | if (hdr->bfd_section != NULL) | |
753 | { | |
754 | BFD_ASSERT (strcmp (name, | |
755 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 756 | return TRUE; |
252b5132 RH |
757 | } |
758 | ||
759 | newsect = bfd_make_section_anyway (abfd, name); | |
760 | if (newsect == NULL) | |
b34976b6 | 761 | return FALSE; |
252b5132 | 762 | |
1829f4b2 AM |
763 | hdr->bfd_section = newsect; |
764 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 765 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 766 | |
2f89ff8d L |
767 | /* Always use the real type/flags. */ |
768 | elf_section_type (newsect) = hdr->sh_type; | |
769 | elf_section_flags (newsect) = hdr->sh_flags; | |
770 | ||
252b5132 RH |
771 | newsect->filepos = hdr->sh_offset; |
772 | ||
773 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
774 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
775 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 776 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 777 | return FALSE; |
252b5132 RH |
778 | |
779 | flags = SEC_NO_FLAGS; | |
780 | if (hdr->sh_type != SHT_NOBITS) | |
781 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 782 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 783 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
784 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
785 | { | |
786 | flags |= SEC_ALLOC; | |
787 | if (hdr->sh_type != SHT_NOBITS) | |
788 | flags |= SEC_LOAD; | |
789 | } | |
790 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
791 | flags |= SEC_READONLY; | |
792 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
793 | flags |= SEC_CODE; | |
794 | else if ((flags & SEC_LOAD) != 0) | |
795 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
796 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
797 | { | |
798 | flags |= SEC_MERGE; | |
799 | newsect->entsize = hdr->sh_entsize; | |
800 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
801 | flags |= SEC_STRINGS; | |
802 | } | |
dbb410c3 AM |
803 | if (hdr->sh_flags & SHF_GROUP) |
804 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 805 | return FALSE; |
13ae64f3 JJ |
806 | if ((hdr->sh_flags & SHF_TLS) != 0) |
807 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 808 | |
3d2b39cf | 809 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 810 | { |
3d2b39cf L |
811 | /* The debugging sections appear to be recognized only by name, |
812 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
813 | static const struct | |
814 | { | |
815 | const char *name; | |
816 | int len; | |
817 | } debug_sections [] = | |
818 | { | |
819 | { "debug", 5 }, /* 'd' */ | |
820 | { NULL, 0 }, /* 'e' */ | |
821 | { NULL, 0 }, /* 'f' */ | |
822 | { "gnu.linkonce.wi.", 17 }, /* 'g' */ | |
823 | { NULL, 0 }, /* 'h' */ | |
824 | { NULL, 0 }, /* 'i' */ | |
825 | { NULL, 0 }, /* 'j' */ | |
826 | { NULL, 0 }, /* 'k' */ | |
827 | { "line", 4 }, /* 'l' */ | |
828 | { NULL, 0 }, /* 'm' */ | |
829 | { NULL, 0 }, /* 'n' */ | |
830 | { NULL, 0 }, /* 'o' */ | |
831 | { NULL, 0 }, /* 'p' */ | |
832 | { NULL, 0 }, /* 'q' */ | |
833 | { NULL, 0 }, /* 'r' */ | |
834 | { "stab", 4 } /* 's' */ | |
835 | }; | |
836 | ||
837 | if (name [0] == '.') | |
838 | { | |
839 | int i = name [1] - 'd'; | |
840 | if (i >= 0 | |
841 | && i < (int) ARRAY_SIZE (debug_sections) | |
842 | && debug_sections [i].name != NULL | |
843 | && strncmp (&name [1], debug_sections [i].name, | |
844 | debug_sections [i].len) == 0) | |
845 | flags |= SEC_DEBUGGING; | |
846 | } | |
847 | } | |
252b5132 RH |
848 | |
849 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
850 | only link a single copy of the section. This is used to support | |
851 | g++. g++ will emit each template expansion in its own section. | |
852 | The symbols will be defined as weak, so that multiple definitions | |
853 | are permitted. The GNU linker extension is to actually discard | |
854 | all but one of the sections. */ | |
b885599b AM |
855 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
856 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
857 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
858 | ||
fa152c49 JW |
859 | bed = get_elf_backend_data (abfd); |
860 | if (bed->elf_backend_section_flags) | |
861 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 862 | return FALSE; |
fa152c49 | 863 | |
252b5132 | 864 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 865 | return FALSE; |
252b5132 RH |
866 | |
867 | if ((flags & SEC_ALLOC) != 0) | |
868 | { | |
869 | Elf_Internal_Phdr *phdr; | |
870 | unsigned int i; | |
871 | ||
872 | /* Look through the phdrs to see if we need to adjust the lma. | |
873 | If all the p_paddr fields are zero, we ignore them, since | |
874 | some ELF linkers produce such output. */ | |
875 | phdr = elf_tdata (abfd)->phdr; | |
876 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
877 | { | |
878 | if (phdr->p_paddr != 0) | |
879 | break; | |
880 | } | |
881 | if (i < elf_elfheader (abfd)->e_phnum) | |
882 | { | |
883 | phdr = elf_tdata (abfd)->phdr; | |
884 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
885 | { | |
e0e8c97f NC |
886 | /* This section is part of this segment if its file |
887 | offset plus size lies within the segment's memory | |
888 | span and, if the section is loaded, the extent of the | |
47d9a591 | 889 | loaded data lies within the extent of the segment. |
bf36db18 NC |
890 | |
891 | Note - we used to check the p_paddr field as well, and | |
892 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 893 | though, as a perfectly valid initialised segment can |
bf36db18 | 894 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 895 | place special significance on the address 0 and |
bf36db18 NC |
896 | executables need to be able to have a segment which |
897 | covers this address. */ | |
252b5132 | 898 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
899 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
900 | && (hdr->sh_offset + hdr->sh_size | |
901 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 902 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
903 | || (hdr->sh_offset + hdr->sh_size |
904 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 905 | { |
dba143ef | 906 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
907 | newsect->lma = (phdr->p_paddr |
908 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
909 | else |
910 | /* We used to use the same adjustment for SEC_LOAD | |
911 | sections, but that doesn't work if the segment | |
912 | is packed with code from multiple VMAs. | |
913 | Instead we calculate the section LMA based on | |
914 | the segment LMA. It is assumed that the | |
915 | segment will contain sections with contiguous | |
916 | LMAs, even if the VMAs are not. */ | |
917 | newsect->lma = (phdr->p_paddr | |
918 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
919 | |
920 | /* With contiguous segments, we can't tell from file | |
921 | offsets whether a section with zero size should | |
922 | be placed at the end of one segment or the | |
923 | beginning of the next. Decide based on vaddr. */ | |
924 | if (hdr->sh_addr >= phdr->p_vaddr | |
925 | && (hdr->sh_addr + hdr->sh_size | |
926 | <= phdr->p_vaddr + phdr->p_memsz)) | |
927 | break; | |
252b5132 RH |
928 | } |
929 | } | |
930 | } | |
931 | } | |
932 | ||
b34976b6 | 933 | return TRUE; |
252b5132 RH |
934 | } |
935 | ||
936 | /* | |
937 | INTERNAL_FUNCTION | |
938 | bfd_elf_find_section | |
939 | ||
940 | SYNOPSIS | |
941 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
942 | ||
943 | DESCRIPTION | |
944 | Helper functions for GDB to locate the string tables. | |
945 | Since BFD hides string tables from callers, GDB needs to use an | |
946 | internal hook to find them. Sun's .stabstr, in particular, | |
947 | isn't even pointed to by the .stab section, so ordinary | |
948 | mechanisms wouldn't work to find it, even if we had some. | |
949 | */ | |
950 | ||
951 | struct elf_internal_shdr * | |
217aa764 | 952 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
953 | { |
954 | Elf_Internal_Shdr **i_shdrp; | |
955 | char *shstrtab; | |
956 | unsigned int max; | |
957 | unsigned int i; | |
958 | ||
959 | i_shdrp = elf_elfsections (abfd); | |
960 | if (i_shdrp != NULL) | |
961 | { | |
9ad5cbcf AM |
962 | shstrtab = bfd_elf_get_str_section (abfd, |
963 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
964 | if (shstrtab != NULL) |
965 | { | |
9ad5cbcf | 966 | max = elf_numsections (abfd); |
252b5132 RH |
967 | for (i = 1; i < max; i++) |
968 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
969 | return i_shdrp[i]; | |
970 | } | |
971 | } | |
972 | return 0; | |
973 | } | |
974 | ||
975 | const char *const bfd_elf_section_type_names[] = { | |
976 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
977 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
978 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
979 | }; | |
980 | ||
1049f94e | 981 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
982 | output, and the reloc is against an external symbol, and nothing |
983 | has given us any additional addend, the resulting reloc will also | |
984 | be against the same symbol. In such a case, we don't want to | |
985 | change anything about the way the reloc is handled, since it will | |
986 | all be done at final link time. Rather than put special case code | |
987 | into bfd_perform_relocation, all the reloc types use this howto | |
988 | function. It just short circuits the reloc if producing | |
1049f94e | 989 | relocatable output against an external symbol. */ |
252b5132 | 990 | |
252b5132 | 991 | bfd_reloc_status_type |
217aa764 AM |
992 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
993 | arelent *reloc_entry, | |
994 | asymbol *symbol, | |
995 | void *data ATTRIBUTE_UNUSED, | |
996 | asection *input_section, | |
997 | bfd *output_bfd, | |
998 | char **error_message ATTRIBUTE_UNUSED) | |
999 | { | |
1000 | if (output_bfd != NULL | |
252b5132 RH |
1001 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1002 | && (! reloc_entry->howto->partial_inplace | |
1003 | || reloc_entry->addend == 0)) | |
1004 | { | |
1005 | reloc_entry->address += input_section->output_offset; | |
1006 | return bfd_reloc_ok; | |
1007 | } | |
1008 | ||
1009 | return bfd_reloc_continue; | |
1010 | } | |
1011 | \f | |
d3c456e9 JJ |
1012 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
1013 | ||
1014 | static void | |
217aa764 AM |
1015 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
1016 | asection *sec) | |
d3c456e9 | 1017 | { |
68bfbfcc AM |
1018 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
1019 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
1020 | } |
1021 | ||
8550eb6e JJ |
1022 | /* Finish SHF_MERGE section merging. */ |
1023 | ||
b34976b6 | 1024 | bfd_boolean |
217aa764 | 1025 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 1026 | { |
57ceae94 AM |
1027 | bfd *ibfd; |
1028 | asection *sec; | |
1029 | ||
0eddce27 | 1030 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 1031 | return FALSE; |
57ceae94 AM |
1032 | |
1033 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
1034 | if ((ibfd->flags & DYNAMIC) == 0) | |
1035 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1036 | if ((sec->flags & SEC_MERGE) != 0 | |
1037 | && !bfd_is_abs_section (sec->output_section)) | |
1038 | { | |
1039 | struct bfd_elf_section_data *secdata; | |
1040 | ||
1041 | secdata = elf_section_data (sec); | |
1042 | if (! _bfd_add_merge_section (abfd, | |
1043 | &elf_hash_table (info)->merge_info, | |
1044 | sec, &secdata->sec_info)) | |
1045 | return FALSE; | |
1046 | else if (secdata->sec_info) | |
1047 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
1048 | } | |
1049 | ||
1050 | if (elf_hash_table (info)->merge_info != NULL) | |
1051 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 1052 | merge_sections_remove_hook); |
b34976b6 | 1053 | return TRUE; |
8550eb6e | 1054 | } |
2d653fc7 AM |
1055 | |
1056 | void | |
217aa764 | 1057 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1058 | { |
1059 | sec->output_section = bfd_abs_section_ptr; | |
1060 | sec->output_offset = sec->vma; | |
0eddce27 | 1061 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1062 | return; |
1063 | ||
68bfbfcc | 1064 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1065 | } |
8550eb6e | 1066 | \f |
0ac4564e L |
1067 | /* Copy the program header and other data from one object module to |
1068 | another. */ | |
252b5132 | 1069 | |
b34976b6 | 1070 | bfd_boolean |
217aa764 | 1071 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1072 | { |
1073 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1074 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1075 | return TRUE; |
2d502050 L |
1076 | |
1077 | BFD_ASSERT (!elf_flags_init (obfd) | |
1078 | || (elf_elfheader (obfd)->e_flags | |
1079 | == elf_elfheader (ibfd)->e_flags)); | |
1080 | ||
0ac4564e | 1081 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1082 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1083 | elf_flags_init (obfd) = TRUE; |
1084 | return TRUE; | |
2d502050 L |
1085 | } |
1086 | ||
cedc298e L |
1087 | static const char * |
1088 | get_segment_type (unsigned int p_type) | |
1089 | { | |
1090 | const char *pt; | |
1091 | switch (p_type) | |
1092 | { | |
1093 | case PT_NULL: pt = "NULL"; break; | |
1094 | case PT_LOAD: pt = "LOAD"; break; | |
1095 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1096 | case PT_INTERP: pt = "INTERP"; break; | |
1097 | case PT_NOTE: pt = "NOTE"; break; | |
1098 | case PT_SHLIB: pt = "SHLIB"; break; | |
1099 | case PT_PHDR: pt = "PHDR"; break; | |
1100 | case PT_TLS: pt = "TLS"; break; | |
1101 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
1102 | case PT_GNU_STACK: pt = "STACK"; break; | |
1103 | case PT_GNU_RELRO: pt = "RELRO"; break; | |
1104 | default: pt = NULL; break; | |
1105 | } | |
1106 | return pt; | |
1107 | } | |
1108 | ||
f0b79d91 L |
1109 | /* Print out the program headers. */ |
1110 | ||
b34976b6 | 1111 | bfd_boolean |
217aa764 | 1112 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1113 | { |
217aa764 | 1114 | FILE *f = farg; |
252b5132 RH |
1115 | Elf_Internal_Phdr *p; |
1116 | asection *s; | |
1117 | bfd_byte *dynbuf = NULL; | |
1118 | ||
1119 | p = elf_tdata (abfd)->phdr; | |
1120 | if (p != NULL) | |
1121 | { | |
1122 | unsigned int i, c; | |
1123 | ||
1124 | fprintf (f, _("\nProgram Header:\n")); | |
1125 | c = elf_elfheader (abfd)->e_phnum; | |
1126 | for (i = 0; i < c; i++, p++) | |
1127 | { | |
cedc298e | 1128 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1129 | char buf[20]; |
1130 | ||
cedc298e | 1131 | if (pt == NULL) |
252b5132 | 1132 | { |
cedc298e L |
1133 | sprintf (buf, "0x%lx", p->p_type); |
1134 | pt = buf; | |
252b5132 | 1135 | } |
dc810e39 | 1136 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1137 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1138 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1139 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1140 | fprintf (f, " paddr 0x"); |
60b89a18 | 1141 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1142 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1143 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1144 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1145 | fprintf (f, " memsz 0x"); |
60b89a18 | 1146 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1147 | fprintf (f, " flags %c%c%c", |
1148 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1149 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1150 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1151 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1152 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1153 | fprintf (f, "\n"); |
1154 | } | |
1155 | } | |
1156 | ||
1157 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1158 | if (s != NULL) | |
1159 | { | |
1160 | int elfsec; | |
dc810e39 | 1161 | unsigned long shlink; |
252b5132 RH |
1162 | bfd_byte *extdyn, *extdynend; |
1163 | size_t extdynsize; | |
217aa764 | 1164 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1165 | |
1166 | fprintf (f, _("\nDynamic Section:\n")); | |
1167 | ||
eea6121a | 1168 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1169 | goto error_return; |
1170 | ||
1171 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1172 | if (elfsec == -1) | |
1173 | goto error_return; | |
dc810e39 | 1174 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1175 | |
1176 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1177 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1178 | ||
1179 | extdyn = dynbuf; | |
eea6121a | 1180 | extdynend = extdyn + s->size; |
252b5132 RH |
1181 | for (; extdyn < extdynend; extdyn += extdynsize) |
1182 | { | |
1183 | Elf_Internal_Dyn dyn; | |
1184 | const char *name; | |
1185 | char ab[20]; | |
b34976b6 | 1186 | bfd_boolean stringp; |
252b5132 | 1187 | |
217aa764 | 1188 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1189 | |
1190 | if (dyn.d_tag == DT_NULL) | |
1191 | break; | |
1192 | ||
b34976b6 | 1193 | stringp = FALSE; |
252b5132 RH |
1194 | switch (dyn.d_tag) |
1195 | { | |
1196 | default: | |
1197 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1198 | name = ab; | |
1199 | break; | |
1200 | ||
b34976b6 | 1201 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1202 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1203 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1204 | case DT_HASH: name = "HASH"; break; | |
1205 | case DT_STRTAB: name = "STRTAB"; break; | |
1206 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1207 | case DT_RELA: name = "RELA"; break; | |
1208 | case DT_RELASZ: name = "RELASZ"; break; | |
1209 | case DT_RELAENT: name = "RELAENT"; break; | |
1210 | case DT_STRSZ: name = "STRSZ"; break; | |
1211 | case DT_SYMENT: name = "SYMENT"; break; | |
1212 | case DT_INIT: name = "INIT"; break; | |
1213 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1214 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1215 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1216 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1217 | case DT_REL: name = "REL"; break; | |
1218 | case DT_RELSZ: name = "RELSZ"; break; | |
1219 | case DT_RELENT: name = "RELENT"; break; | |
1220 | case DT_PLTREL: name = "PLTREL"; break; | |
1221 | case DT_DEBUG: name = "DEBUG"; break; | |
1222 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1223 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1224 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1225 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1226 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1227 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1228 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1229 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1230 | case DT_FLAGS: name = "FLAGS"; break; |
1231 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1232 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1233 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1234 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1235 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1236 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1237 | case DT_FEATURE: name = "FEATURE"; break; | |
1238 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1239 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1240 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1241 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1242 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1243 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1244 | case DT_PLTPAD: name = "PLTPAD"; break; |
1245 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1246 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1247 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1248 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1249 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1250 | case DT_VERSYM: name = "VERSYM"; break; |
1251 | case DT_VERDEF: name = "VERDEF"; break; | |
1252 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1253 | case DT_VERNEED: name = "VERNEED"; break; | |
1254 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1255 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1256 | case DT_USED: name = "USED"; break; |
b34976b6 | 1257 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1258 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1259 | } |
1260 | ||
1261 | fprintf (f, " %-11s ", name); | |
1262 | if (! stringp) | |
1263 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1264 | else | |
1265 | { | |
1266 | const char *string; | |
dc810e39 | 1267 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1268 | |
dc810e39 | 1269 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1270 | if (string == NULL) |
1271 | goto error_return; | |
1272 | fprintf (f, "%s", string); | |
1273 | } | |
1274 | fprintf (f, "\n"); | |
1275 | } | |
1276 | ||
1277 | free (dynbuf); | |
1278 | dynbuf = NULL; | |
1279 | } | |
1280 | ||
1281 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1282 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1283 | { | |
fc0e6df6 | 1284 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1285 | return FALSE; |
252b5132 RH |
1286 | } |
1287 | ||
1288 | if (elf_dynverdef (abfd) != 0) | |
1289 | { | |
1290 | Elf_Internal_Verdef *t; | |
1291 | ||
1292 | fprintf (f, _("\nVersion definitions:\n")); | |
1293 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1294 | { | |
1295 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1296 | t->vd_flags, t->vd_hash, |
1297 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1298 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1299 | { |
1300 | Elf_Internal_Verdaux *a; | |
1301 | ||
1302 | fprintf (f, "\t"); | |
1303 | for (a = t->vd_auxptr->vda_nextptr; | |
1304 | a != NULL; | |
1305 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1306 | fprintf (f, "%s ", |
1307 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1308 | fprintf (f, "\n"); |
1309 | } | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | if (elf_dynverref (abfd) != 0) | |
1314 | { | |
1315 | Elf_Internal_Verneed *t; | |
1316 | ||
1317 | fprintf (f, _("\nVersion References:\n")); | |
1318 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1319 | { | |
1320 | Elf_Internal_Vernaux *a; | |
1321 | ||
d0fb9a8d JJ |
1322 | fprintf (f, _(" required from %s:\n"), |
1323 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1324 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1325 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1326 | a->vna_flags, a->vna_other, |
1327 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1328 | } |
1329 | } | |
1330 | ||
b34976b6 | 1331 | return TRUE; |
252b5132 RH |
1332 | |
1333 | error_return: | |
1334 | if (dynbuf != NULL) | |
1335 | free (dynbuf); | |
b34976b6 | 1336 | return FALSE; |
252b5132 RH |
1337 | } |
1338 | ||
1339 | /* Display ELF-specific fields of a symbol. */ | |
1340 | ||
1341 | void | |
217aa764 AM |
1342 | bfd_elf_print_symbol (bfd *abfd, |
1343 | void *filep, | |
1344 | asymbol *symbol, | |
1345 | bfd_print_symbol_type how) | |
252b5132 | 1346 | { |
217aa764 | 1347 | FILE *file = filep; |
252b5132 RH |
1348 | switch (how) |
1349 | { | |
1350 | case bfd_print_symbol_name: | |
1351 | fprintf (file, "%s", symbol->name); | |
1352 | break; | |
1353 | case bfd_print_symbol_more: | |
1354 | fprintf (file, "elf "); | |
60b89a18 | 1355 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1356 | fprintf (file, " %lx", (long) symbol->flags); |
1357 | break; | |
1358 | case bfd_print_symbol_all: | |
1359 | { | |
4e8a9624 AM |
1360 | const char *section_name; |
1361 | const char *name = NULL; | |
9c5bfbb7 | 1362 | const struct elf_backend_data *bed; |
7a13edea | 1363 | unsigned char st_other; |
dbb410c3 | 1364 | bfd_vma val; |
c044fabd | 1365 | |
252b5132 | 1366 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1367 | |
1368 | bed = get_elf_backend_data (abfd); | |
1369 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1370 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1371 | |
1372 | if (name == NULL) | |
1373 | { | |
7ee38065 | 1374 | name = symbol->name; |
217aa764 | 1375 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1376 | } |
1377 | ||
252b5132 RH |
1378 | fprintf (file, " %s\t", section_name); |
1379 | /* Print the "other" value for a symbol. For common symbols, | |
1380 | we've already printed the size; now print the alignment. | |
1381 | For other symbols, we have no specified alignment, and | |
1382 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1383 | if (bfd_is_com_section (symbol->section)) |
1384 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1385 | else | |
1386 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1387 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1388 | |
1389 | /* If we have version information, print it. */ | |
1390 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1391 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1392 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1393 | { | |
1394 | unsigned int vernum; | |
1395 | const char *version_string; | |
1396 | ||
1397 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1398 | ||
1399 | if (vernum == 0) | |
1400 | version_string = ""; | |
1401 | else if (vernum == 1) | |
1402 | version_string = "Base"; | |
1403 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1404 | version_string = | |
1405 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1406 | else | |
1407 | { | |
1408 | Elf_Internal_Verneed *t; | |
1409 | ||
1410 | version_string = ""; | |
1411 | for (t = elf_tdata (abfd)->verref; | |
1412 | t != NULL; | |
1413 | t = t->vn_nextref) | |
1414 | { | |
1415 | Elf_Internal_Vernaux *a; | |
1416 | ||
1417 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1418 | { | |
1419 | if (a->vna_other == vernum) | |
1420 | { | |
1421 | version_string = a->vna_nodename; | |
1422 | break; | |
1423 | } | |
1424 | } | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1429 | fprintf (file, " %-11s", version_string); | |
1430 | else | |
1431 | { | |
1432 | int i; | |
1433 | ||
1434 | fprintf (file, " (%s)", version_string); | |
1435 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1436 | putc (' ', file); | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1441 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1442 | |
7a13edea NC |
1443 | switch (st_other) |
1444 | { | |
1445 | case 0: break; | |
1446 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1447 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1448 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1449 | default: | |
1450 | /* Some other non-defined flags are also present, so print | |
1451 | everything hex. */ | |
1452 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1453 | } | |
252b5132 | 1454 | |
587ff49e | 1455 | fprintf (file, " %s", name); |
252b5132 RH |
1456 | } |
1457 | break; | |
1458 | } | |
1459 | } | |
1460 | \f | |
1461 | /* Create an entry in an ELF linker hash table. */ | |
1462 | ||
1463 | struct bfd_hash_entry * | |
217aa764 AM |
1464 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1465 | struct bfd_hash_table *table, | |
1466 | const char *string) | |
252b5132 | 1467 | { |
252b5132 RH |
1468 | /* Allocate the structure if it has not already been allocated by a |
1469 | subclass. */ | |
51b64d56 AM |
1470 | if (entry == NULL) |
1471 | { | |
1472 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1473 | if (entry == NULL) | |
1474 | return entry; | |
1475 | } | |
252b5132 RH |
1476 | |
1477 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1478 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1479 | if (entry != NULL) | |
252b5132 | 1480 | { |
51b64d56 AM |
1481 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1482 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1483 | ||
252b5132 RH |
1484 | /* Set local fields. */ |
1485 | ret->indx = -1; | |
252b5132 | 1486 | ret->dynindx = -1; |
a6aa5195 AM |
1487 | ret->got = htab->init_got_refcount; |
1488 | ret->plt = htab->init_plt_refcount; | |
f6e332e6 AM |
1489 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) |
1490 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1491 | /* Assume that we have been called by a non-ELF symbol reader. |
1492 | This flag is then reset by the code which reads an ELF input | |
1493 | file. This ensures that a symbol created by a non-ELF symbol | |
1494 | reader will have the flag set correctly. */ | |
f5385ebf | 1495 | ret->non_elf = 1; |
252b5132 RH |
1496 | } |
1497 | ||
51b64d56 | 1498 | return entry; |
252b5132 RH |
1499 | } |
1500 | ||
2920b85c | 1501 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1502 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1503 | |
c61b8717 | 1504 | void |
fcfa13d2 | 1505 | _bfd_elf_link_hash_copy_indirect (struct bfd_link_info *info, |
217aa764 AM |
1506 | struct elf_link_hash_entry *dir, |
1507 | struct elf_link_hash_entry *ind) | |
2920b85c | 1508 | { |
fcfa13d2 | 1509 | struct elf_link_hash_table *htab; |
3c3e9281 | 1510 | |
2920b85c RH |
1511 | /* Copy down any references that we may have already seen to the |
1512 | symbol which just became indirect. */ | |
1513 | ||
f5385ebf AM |
1514 | dir->ref_dynamic |= ind->ref_dynamic; |
1515 | dir->ref_regular |= ind->ref_regular; | |
1516 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1517 | dir->non_got_ref |= ind->non_got_ref; | |
1518 | dir->needs_plt |= ind->needs_plt; | |
1519 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1520 | |
1e370bd2 | 1521 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1522 | return; |
1523 | ||
51b64d56 | 1524 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1525 | These may have been already set up by a check_relocs routine. */ |
fcfa13d2 AM |
1526 | htab = elf_hash_table (info); |
1527 | if (ind->got.refcount > htab->init_got_refcount.refcount) | |
2920b85c | 1528 | { |
fcfa13d2 AM |
1529 | if (dir->got.refcount < 0) |
1530 | dir->got.refcount = 0; | |
1531 | dir->got.refcount += ind->got.refcount; | |
1532 | ind->got.refcount = htab->init_got_refcount.refcount; | |
2920b85c | 1533 | } |
2920b85c | 1534 | |
fcfa13d2 | 1535 | if (ind->plt.refcount > htab->init_plt_refcount.refcount) |
2920b85c | 1536 | { |
fcfa13d2 AM |
1537 | if (dir->plt.refcount < 0) |
1538 | dir->plt.refcount = 0; | |
1539 | dir->plt.refcount += ind->plt.refcount; | |
1540 | ind->plt.refcount = htab->init_plt_refcount.refcount; | |
2920b85c | 1541 | } |
2920b85c | 1542 | |
fcfa13d2 | 1543 | if (ind->dynindx != -1) |
2920b85c | 1544 | { |
fcfa13d2 AM |
1545 | if (dir->dynindx != -1) |
1546 | _bfd_elf_strtab_delref (htab->dynstr, dir->dynstr_index); | |
2920b85c RH |
1547 | dir->dynindx = ind->dynindx; |
1548 | dir->dynstr_index = ind->dynstr_index; | |
1549 | ind->dynindx = -1; | |
1550 | ind->dynstr_index = 0; | |
1551 | } | |
2920b85c RH |
1552 | } |
1553 | ||
c61b8717 | 1554 | void |
217aa764 AM |
1555 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1556 | struct elf_link_hash_entry *h, | |
1557 | bfd_boolean force_local) | |
2920b85c | 1558 | { |
a6aa5195 | 1559 | h->plt = elf_hash_table (info)->init_plt_offset; |
f5385ebf | 1560 | h->needs_plt = 0; |
e5094212 AM |
1561 | if (force_local) |
1562 | { | |
f5385ebf | 1563 | h->forced_local = 1; |
e5094212 AM |
1564 | if (h->dynindx != -1) |
1565 | { | |
1566 | h->dynindx = -1; | |
1567 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1568 | h->dynstr_index); | |
1569 | } | |
1570 | } | |
2920b85c RH |
1571 | } |
1572 | ||
252b5132 RH |
1573 | /* Initialize an ELF linker hash table. */ |
1574 | ||
b34976b6 | 1575 | bfd_boolean |
217aa764 AM |
1576 | _bfd_elf_link_hash_table_init |
1577 | (struct elf_link_hash_table *table, | |
1578 | bfd *abfd, | |
1579 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1580 | struct bfd_hash_table *, | |
66eb6687 AM |
1581 | const char *), |
1582 | unsigned int entsize) | |
252b5132 | 1583 | { |
b34976b6 | 1584 | bfd_boolean ret; |
a6aa5195 | 1585 | int can_refcount = get_elf_backend_data (abfd)->can_refcount; |
8ea2e4bd | 1586 | |
b34976b6 | 1587 | table->dynamic_sections_created = FALSE; |
252b5132 | 1588 | table->dynobj = NULL; |
a6aa5195 AM |
1589 | table->init_got_refcount.refcount = can_refcount - 1; |
1590 | table->init_plt_refcount.refcount = can_refcount - 1; | |
1591 | table->init_got_offset.offset = -(bfd_vma) 1; | |
1592 | table->init_plt_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1593 | /* The first dynamic symbol is a dummy. */ |
1594 | table->dynsymcount = 1; | |
1595 | table->dynstr = NULL; | |
1596 | table->bucketcount = 0; | |
1597 | table->needed = NULL; | |
1598 | table->hgot = NULL; | |
ed66ec07 | 1599 | table->hplt = NULL; |
f5fa8ca2 | 1600 | table->merge_info = NULL; |
3722b82f | 1601 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1602 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1603 | table->dynlocal = NULL; |
73722af0 | 1604 | table->runpath = NULL; |
e1918d23 AM |
1605 | table->tls_sec = NULL; |
1606 | table->tls_size = 0; | |
73722af0 | 1607 | table->loaded = NULL; |
67687978 | 1608 | table->is_relocatable_executable = FALSE; |
73722af0 | 1609 | |
66eb6687 | 1610 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
8ea2e4bd NC |
1611 | table->root.type = bfd_link_elf_hash_table; |
1612 | ||
1613 | return ret; | |
252b5132 RH |
1614 | } |
1615 | ||
1616 | /* Create an ELF linker hash table. */ | |
1617 | ||
1618 | struct bfd_link_hash_table * | |
217aa764 | 1619 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1620 | { |
1621 | struct elf_link_hash_table *ret; | |
dc810e39 | 1622 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1623 | |
217aa764 AM |
1624 | ret = bfd_malloc (amt); |
1625 | if (ret == NULL) | |
252b5132 RH |
1626 | return NULL; |
1627 | ||
66eb6687 AM |
1628 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc, |
1629 | sizeof (struct elf_link_hash_entry))) | |
252b5132 | 1630 | { |
e2d34d7d | 1631 | free (ret); |
252b5132 RH |
1632 | return NULL; |
1633 | } | |
1634 | ||
1635 | return &ret->root; | |
1636 | } | |
1637 | ||
1638 | /* This is a hook for the ELF emulation code in the generic linker to | |
1639 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1640 | entry for a dynamic object. */ |
252b5132 RH |
1641 | |
1642 | void | |
217aa764 | 1643 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1644 | { |
1645 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1646 | && bfd_get_format (abfd) == bfd_object) | |
1647 | elf_dt_name (abfd) = name; | |
1648 | } | |
1649 | ||
e56f61be L |
1650 | int |
1651 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1652 | { | |
1653 | int lib_class; | |
1654 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1655 | && bfd_get_format (abfd) == bfd_object) | |
1656 | lib_class = elf_dyn_lib_class (abfd); | |
1657 | else | |
1658 | lib_class = 0; | |
1659 | return lib_class; | |
1660 | } | |
1661 | ||
74816898 | 1662 | void |
4a43e768 | 1663 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1664 | { |
1665 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1666 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1667 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1668 | } |
1669 | ||
252b5132 RH |
1670 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1671 | the linker ELF emulation code. */ | |
1672 | ||
1673 | struct bfd_link_needed_list * | |
217aa764 AM |
1674 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1675 | struct bfd_link_info *info) | |
252b5132 | 1676 | { |
0eddce27 | 1677 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1678 | return NULL; |
1679 | return elf_hash_table (info)->needed; | |
1680 | } | |
1681 | ||
a963dc6a L |
1682 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1683 | hook for the linker ELF emulation code. */ | |
1684 | ||
1685 | struct bfd_link_needed_list * | |
217aa764 AM |
1686 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1687 | struct bfd_link_info *info) | |
a963dc6a | 1688 | { |
0eddce27 | 1689 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1690 | return NULL; |
1691 | return elf_hash_table (info)->runpath; | |
1692 | } | |
1693 | ||
252b5132 RH |
1694 | /* Get the name actually used for a dynamic object for a link. This |
1695 | is the SONAME entry if there is one. Otherwise, it is the string | |
1696 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1697 | ||
1698 | const char * | |
217aa764 | 1699 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1700 | { |
1701 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1702 | && bfd_get_format (abfd) == bfd_object) | |
1703 | return elf_dt_name (abfd); | |
1704 | return NULL; | |
1705 | } | |
1706 | ||
1707 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1708 | the ELF linker emulation code. */ | |
1709 | ||
b34976b6 | 1710 | bfd_boolean |
217aa764 AM |
1711 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1712 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1713 | { |
1714 | asection *s; | |
1715 | bfd_byte *dynbuf = NULL; | |
1716 | int elfsec; | |
dc810e39 | 1717 | unsigned long shlink; |
252b5132 RH |
1718 | bfd_byte *extdyn, *extdynend; |
1719 | size_t extdynsize; | |
217aa764 | 1720 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1721 | |
1722 | *pneeded = NULL; | |
1723 | ||
1724 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1725 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1726 | return TRUE; |
252b5132 RH |
1727 | |
1728 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1729 | if (s == NULL || s->size == 0) |
b34976b6 | 1730 | return TRUE; |
252b5132 | 1731 | |
eea6121a | 1732 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1733 | goto error_return; |
1734 | ||
1735 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1736 | if (elfsec == -1) | |
1737 | goto error_return; | |
1738 | ||
dc810e39 | 1739 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1740 | |
1741 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1742 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1743 | ||
1744 | extdyn = dynbuf; | |
eea6121a | 1745 | extdynend = extdyn + s->size; |
252b5132 RH |
1746 | for (; extdyn < extdynend; extdyn += extdynsize) |
1747 | { | |
1748 | Elf_Internal_Dyn dyn; | |
1749 | ||
217aa764 | 1750 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1751 | |
1752 | if (dyn.d_tag == DT_NULL) | |
1753 | break; | |
1754 | ||
1755 | if (dyn.d_tag == DT_NEEDED) | |
1756 | { | |
1757 | const char *string; | |
1758 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1759 | unsigned int tagv = dyn.d_un.d_val; |
1760 | bfd_size_type amt; | |
252b5132 | 1761 | |
dc810e39 | 1762 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1763 | if (string == NULL) |
1764 | goto error_return; | |
1765 | ||
dc810e39 | 1766 | amt = sizeof *l; |
217aa764 | 1767 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1768 | if (l == NULL) |
1769 | goto error_return; | |
1770 | ||
1771 | l->by = abfd; | |
1772 | l->name = string; | |
1773 | l->next = *pneeded; | |
1774 | *pneeded = l; | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | free (dynbuf); | |
1779 | ||
b34976b6 | 1780 | return TRUE; |
252b5132 RH |
1781 | |
1782 | error_return: | |
1783 | if (dynbuf != NULL) | |
1784 | free (dynbuf); | |
b34976b6 | 1785 | return FALSE; |
252b5132 RH |
1786 | } |
1787 | \f | |
1788 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1789 | ||
1790 | struct bfd_strtab_hash * | |
217aa764 | 1791 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1792 | { |
1793 | struct bfd_strtab_hash *ret; | |
1794 | ||
1795 | ret = _bfd_stringtab_init (); | |
1796 | if (ret != NULL) | |
1797 | { | |
1798 | bfd_size_type loc; | |
1799 | ||
b34976b6 | 1800 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1801 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1802 | if (loc == (bfd_size_type) -1) | |
1803 | { | |
1804 | _bfd_stringtab_free (ret); | |
1805 | ret = NULL; | |
1806 | } | |
1807 | } | |
1808 | return ret; | |
1809 | } | |
1810 | \f | |
1811 | /* ELF .o/exec file reading */ | |
1812 | ||
c044fabd | 1813 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1814 | |
b34976b6 | 1815 | bfd_boolean |
217aa764 | 1816 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1817 | { |
1818 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1819 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1820 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1821 | const char *name; |
252b5132 | 1822 | |
1b3a8575 AM |
1823 | name = bfd_elf_string_from_elf_section (abfd, |
1824 | elf_elfheader (abfd)->e_shstrndx, | |
1825 | hdr->sh_name); | |
933d961a JJ |
1826 | if (name == NULL) |
1827 | return FALSE; | |
252b5132 RH |
1828 | |
1829 | switch (hdr->sh_type) | |
1830 | { | |
1831 | case SHT_NULL: | |
1832 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1833 | return TRUE; |
252b5132 RH |
1834 | |
1835 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1836 | case SHT_NOBITS: /* .bss section. */ |
1837 | case SHT_HASH: /* .hash section. */ | |
1838 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1839 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1840 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1841 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1842 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1843 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1844 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1845 | |
797fc050 | 1846 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1847 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1848 | return FALSE; |
8e0ed13f NC |
1849 | if (hdr->sh_link > elf_numsections (abfd) |
1850 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1851 | return FALSE; | |
797fc050 AM |
1852 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1853 | { | |
1854 | Elf_Internal_Shdr *dynsymhdr; | |
1855 | ||
1856 | /* The shared libraries distributed with hpux11 have a bogus | |
1857 | sh_link field for the ".dynamic" section. Find the | |
1858 | string table for the ".dynsym" section instead. */ | |
1859 | if (elf_dynsymtab (abfd) != 0) | |
1860 | { | |
1861 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1862 | hdr->sh_link = dynsymhdr->sh_link; | |
1863 | } | |
1864 | else | |
1865 | { | |
1866 | unsigned int i, num_sec; | |
1867 | ||
1868 | num_sec = elf_numsections (abfd); | |
1869 | for (i = 1; i < num_sec; i++) | |
1870 | { | |
1871 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1872 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1873 | { | |
1874 | hdr->sh_link = dynsymhdr->sh_link; | |
1875 | break; | |
1876 | } | |
1877 | } | |
1878 | } | |
1879 | } | |
1880 | break; | |
1881 | ||
252b5132 RH |
1882 | case SHT_SYMTAB: /* A symbol table */ |
1883 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1884 | return TRUE; |
252b5132 | 1885 | |
a50b2160 JJ |
1886 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1887 | return FALSE; | |
252b5132 RH |
1888 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1889 | elf_onesymtab (abfd) = shindex; | |
1890 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1891 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1892 | abfd->flags |= HAS_SYMS; | |
1893 | ||
1894 | /* Sometimes a shared object will map in the symbol table. If | |
1895 | SHF_ALLOC is set, and this is a shared object, then we also | |
1896 | treat this section as a BFD section. We can not base the | |
1897 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1898 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1899 | linker. */ |
1900 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1901 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1902 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1903 | shindex)) | |
b34976b6 | 1904 | return FALSE; |
252b5132 | 1905 | |
1b3a8575 AM |
1906 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1907 | can't read symbols without that section loaded as well. It | |
1908 | is most likely specified by the next section header. */ | |
1909 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1910 | { | |
1911 | unsigned int i, num_sec; | |
1912 | ||
1913 | num_sec = elf_numsections (abfd); | |
1914 | for (i = shindex + 1; i < num_sec; i++) | |
1915 | { | |
1916 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1917 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1918 | && hdr2->sh_link == shindex) | |
1919 | break; | |
1920 | } | |
1921 | if (i == num_sec) | |
1922 | for (i = 1; i < shindex; i++) | |
1923 | { | |
1924 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1925 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1926 | && hdr2->sh_link == shindex) | |
1927 | break; | |
1928 | } | |
1929 | if (i != shindex) | |
1930 | return bfd_section_from_shdr (abfd, i); | |
1931 | } | |
b34976b6 | 1932 | return TRUE; |
252b5132 RH |
1933 | |
1934 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1935 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1936 | return TRUE; |
252b5132 | 1937 | |
a50b2160 JJ |
1938 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1939 | return FALSE; | |
252b5132 RH |
1940 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1941 | elf_dynsymtab (abfd) = shindex; | |
1942 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1943 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1944 | abfd->flags |= HAS_SYMS; | |
1945 | ||
1946 | /* Besides being a symbol table, we also treat this as a regular | |
1947 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1948 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1949 | |
9ad5cbcf AM |
1950 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1951 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1952 | return TRUE; |
9ad5cbcf | 1953 | |
1b3a8575 | 1954 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1955 | elf_symtab_shndx (abfd) = shindex; |
1956 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1957 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1958 | return TRUE; |
9ad5cbcf | 1959 | |
252b5132 RH |
1960 | case SHT_STRTAB: /* A string table */ |
1961 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1962 | return TRUE; |
252b5132 RH |
1963 | if (ehdr->e_shstrndx == shindex) |
1964 | { | |
1965 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1966 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1967 | return TRUE; |
252b5132 | 1968 | } |
1b3a8575 AM |
1969 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1970 | { | |
1971 | symtab_strtab: | |
1972 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1973 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1974 | return TRUE; | |
1975 | } | |
1976 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1977 | { | |
1978 | dynsymtab_strtab: | |
1979 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1980 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1981 | elf_elfsections (abfd)[shindex] = hdr; | |
1982 | /* We also treat this as a regular section, so that objcopy | |
1983 | can handle it. */ | |
6dc132d9 L |
1984 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1985 | shindex); | |
1b3a8575 | 1986 | } |
252b5132 | 1987 | |
1b3a8575 AM |
1988 | /* If the string table isn't one of the above, then treat it as a |
1989 | regular section. We need to scan all the headers to be sure, | |
1990 | just in case this strtab section appeared before the above. */ | |
1991 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1992 | { | |
1993 | unsigned int i, num_sec; | |
252b5132 | 1994 | |
1b3a8575 AM |
1995 | num_sec = elf_numsections (abfd); |
1996 | for (i = 1; i < num_sec; i++) | |
1997 | { | |
1998 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1999 | if (hdr2->sh_link == shindex) | |
2000 | { | |
933d961a JJ |
2001 | /* Prevent endless recursion on broken objects. */ |
2002 | if (i == shindex) | |
2003 | return FALSE; | |
1b3a8575 AM |
2004 | if (! bfd_section_from_shdr (abfd, i)) |
2005 | return FALSE; | |
2006 | if (elf_onesymtab (abfd) == i) | |
2007 | goto symtab_strtab; | |
2008 | if (elf_dynsymtab (abfd) == i) | |
2009 | goto dynsymtab_strtab; | |
2010 | } | |
2011 | } | |
2012 | } | |
6dc132d9 | 2013 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2014 | |
2015 | case SHT_REL: | |
2016 | case SHT_RELA: | |
2017 | /* *These* do a lot of work -- but build no sections! */ | |
2018 | { | |
2019 | asection *target_sect; | |
2020 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 2021 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 2022 | |
aa2ca951 JJ |
2023 | if (hdr->sh_entsize |
2024 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
2025 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
2026 | return FALSE; | |
2027 | ||
03ae5f59 | 2028 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
2029 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
2030 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
2031 | { |
2032 | ((*_bfd_error_handler) | |
d003868e AM |
2033 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
2034 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
2035 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2036 | shindex); | |
03ae5f59 ILT |
2037 | } |
2038 | ||
252b5132 RH |
2039 | /* For some incomprehensible reason Oracle distributes |
2040 | libraries for Solaris in which some of the objects have | |
2041 | bogus sh_link fields. It would be nice if we could just | |
2042 | reject them, but, unfortunately, some people need to use | |
2043 | them. We scan through the section headers; if we find only | |
2044 | one suitable symbol table, we clobber the sh_link to point | |
2045 | to it. I hope this doesn't break anything. */ | |
2046 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
2047 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
2048 | { | |
9ad5cbcf | 2049 | unsigned int scan; |
252b5132 RH |
2050 | int found; |
2051 | ||
2052 | found = 0; | |
9ad5cbcf | 2053 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2054 | { |
2055 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2056 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2057 | { | |
2058 | if (found != 0) | |
2059 | { | |
2060 | found = 0; | |
2061 | break; | |
2062 | } | |
2063 | found = scan; | |
2064 | } | |
2065 | } | |
2066 | if (found != 0) | |
2067 | hdr->sh_link = found; | |
2068 | } | |
2069 | ||
2070 | /* Get the symbol table. */ | |
1b3a8575 AM |
2071 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2072 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2073 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 2074 | return FALSE; |
252b5132 RH |
2075 | |
2076 | /* If this reloc section does not use the main symbol table we | |
2077 | don't treat it as a reloc section. BFD can't adequately | |
2078 | represent such a section, so at least for now, we don't | |
c044fabd | 2079 | try. We just present it as a normal section. We also |
60bcf0fa | 2080 | can't use it as a reloc section if it points to the null |
185ef66d AM |
2081 | section, an invalid section, or another reloc section. */ |
2082 | if (hdr->sh_link != elf_onesymtab (abfd) | |
2083 | || hdr->sh_info == SHN_UNDEF | |
2084 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
2085 | || hdr->sh_info >= num_sec | |
2086 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2087 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
2088 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2089 | shindex); | |
252b5132 RH |
2090 | |
2091 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2092 | return FALSE; |
252b5132 RH |
2093 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2094 | if (target_sect == NULL) | |
b34976b6 | 2095 | return FALSE; |
252b5132 RH |
2096 | |
2097 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2098 | || target_sect->reloc_count == 0) | |
2099 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2100 | else | |
2101 | { | |
dc810e39 | 2102 | bfd_size_type amt; |
252b5132 | 2103 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2104 | amt = sizeof (*hdr2); |
217aa764 | 2105 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2106 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2107 | } | |
2108 | *hdr2 = *hdr; | |
2109 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2110 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2111 | target_sect->flags |= SEC_RELOC; |
2112 | target_sect->relocation = NULL; | |
2113 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2114 | /* In the section to which the relocations apply, mark whether |
2115 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2116 | if (hdr->sh_size != 0) |
68bfbfcc | 2117 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2118 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2119 | return TRUE; |
252b5132 RH |
2120 | } |
2121 | break; | |
2122 | ||
2123 | case SHT_GNU_verdef: | |
2124 | elf_dynverdef (abfd) = shindex; | |
2125 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2126 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2127 | break; |
2128 | ||
2129 | case SHT_GNU_versym: | |
a50b2160 JJ |
2130 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
2131 | return FALSE; | |
252b5132 RH |
2132 | elf_dynversym (abfd) = shindex; |
2133 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2134 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2135 | |
2136 | case SHT_GNU_verneed: | |
2137 | elf_dynverref (abfd) = shindex; | |
2138 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2139 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2140 | |
2141 | case SHT_SHLIB: | |
b34976b6 | 2142 | return TRUE; |
252b5132 | 2143 | |
dbb410c3 | 2144 | case SHT_GROUP: |
b885599b AM |
2145 | /* We need a BFD section for objcopy and relocatable linking, |
2146 | and it's handy to have the signature available as the section | |
2147 | name. */ | |
a50b2160 JJ |
2148 | if (hdr->sh_entsize != GRP_ENTRY_SIZE) |
2149 | return FALSE; | |
b885599b AM |
2150 | name = group_signature (abfd, hdr); |
2151 | if (name == NULL) | |
b34976b6 | 2152 | return FALSE; |
6dc132d9 | 2153 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2154 | return FALSE; |
dbb410c3 AM |
2155 | if (hdr->contents != NULL) |
2156 | { | |
2157 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2158 | unsigned int n_elt = hdr->sh_size / 4; | |
2159 | asection *s; | |
2160 | ||
b885599b AM |
2161 | if (idx->flags & GRP_COMDAT) |
2162 | hdr->bfd_section->flags | |
2163 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2164 | ||
45c5e9ed L |
2165 | /* We try to keep the same section order as it comes in. */ |
2166 | idx += n_elt; | |
dbb410c3 | 2167 | while (--n_elt != 0) |
45c5e9ed | 2168 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2169 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2170 | { |
945906ff | 2171 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2172 | break; |
2173 | } | |
2174 | } | |
2175 | break; | |
2176 | ||
252b5132 RH |
2177 | default: |
2178 | /* Check for any processor-specific section types. */ | |
3eb70a79 L |
2179 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
2180 | return TRUE; | |
2181 | ||
2182 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
2183 | { | |
2184 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
2185 | /* FIXME: How to properly handle allocated section reserved | |
2186 | for applications? */ | |
2187 | (*_bfd_error_handler) | |
2188 | (_("%B: don't know how to handle allocated, application " | |
2189 | "specific section `%s' [0x%8x]"), | |
2190 | abfd, name, hdr->sh_type); | |
2191 | else | |
2192 | /* Allow sections reserved for applications. */ | |
2193 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
2194 | shindex); | |
2195 | } | |
2196 | else if (hdr->sh_type >= SHT_LOPROC | |
2197 | && hdr->sh_type <= SHT_HIPROC) | |
2198 | /* FIXME: We should handle this section. */ | |
2199 | (*_bfd_error_handler) | |
2200 | (_("%B: don't know how to handle processor specific section " | |
2201 | "`%s' [0x%8x]"), | |
2202 | abfd, name, hdr->sh_type); | |
2203 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
2204 | /* FIXME: We should handle this section. */ | |
2205 | (*_bfd_error_handler) | |
2206 | (_("%B: don't know how to handle OS specific section " | |
2207 | "`%s' [0x%8x]"), | |
2208 | abfd, name, hdr->sh_type); | |
2209 | else | |
2210 | /* FIXME: We should handle this section. */ | |
2211 | (*_bfd_error_handler) | |
2212 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
2213 | abfd, name, hdr->sh_type); | |
2214 | ||
2215 | return FALSE; | |
252b5132 RH |
2216 | } |
2217 | ||
b34976b6 | 2218 | return TRUE; |
252b5132 RH |
2219 | } |
2220 | ||
ec338859 AM |
2221 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2222 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2223 | ||
2224 | asection * | |
217aa764 AM |
2225 | bfd_section_from_r_symndx (bfd *abfd, |
2226 | struct sym_sec_cache *cache, | |
2227 | asection *sec, | |
2228 | unsigned long r_symndx) | |
ec338859 | 2229 | { |
ec338859 | 2230 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2231 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2232 | Elf_External_Sym_Shndx eshndx; | |
2233 | Elf_Internal_Sym isym; | |
ec338859 AM |
2234 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2235 | ||
2236 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2237 | return cache->sec[ent]; | |
2238 | ||
2239 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2240 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2241 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2242 | return NULL; |
9ad5cbcf | 2243 | |
ec338859 AM |
2244 | if (cache->abfd != abfd) |
2245 | { | |
2246 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2247 | cache->abfd = abfd; | |
2248 | } | |
2249 | cache->indx[ent] = r_symndx; | |
2250 | cache->sec[ent] = sec; | |
50bc7936 AM |
2251 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2252 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2253 | { |
2254 | asection *s; | |
6cdc0ccc | 2255 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2256 | if (s != NULL) |
2257 | cache->sec[ent] = s; | |
2258 | } | |
2259 | return cache->sec[ent]; | |
2260 | } | |
2261 | ||
252b5132 RH |
2262 | /* Given an ELF section number, retrieve the corresponding BFD |
2263 | section. */ | |
2264 | ||
2265 | asection * | |
217aa764 | 2266 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2267 | { |
9ad5cbcf | 2268 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2269 | return NULL; |
2270 | return elf_elfsections (abfd)[index]->bfd_section; | |
2271 | } | |
2272 | ||
b35d266b | 2273 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2274 | { |
7dcb9820 | 2275 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7f4d3958 L |
2276 | { NULL, 0, 0, 0, 0 } |
2277 | }; | |
2278 | ||
b35d266b | 2279 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2280 | { |
7dcb9820 | 2281 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
7f4d3958 L |
2282 | { NULL, 0, 0, 0, 0 } |
2283 | }; | |
2284 | ||
b35d266b | 2285 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2286 | { |
7dcb9820 AM |
2287 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2288 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2289 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
7dcb9820 AM |
2290 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, |
2291 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2292 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2293 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2294 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2295 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2296 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
7f4d3958 L |
2297 | { NULL, 0, 0, 0, 0 } |
2298 | }; | |
2299 | ||
b35d266b | 2300 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 L |
2301 | { |
2302 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2303 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2304 | { NULL, 0, 0, 0, 0 } | |
2305 | }; | |
2306 | ||
b35d266b | 2307 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 L |
2308 | { |
2309 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7dcb9820 | 2310 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2311 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, |
2312 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2313 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
7f4d3958 L |
2314 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2315 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
fdc90cb4 | 2316 | { ".gnu.hash", 9, 0, SHT_GNU_HASH, SHF_ALLOC }, |
7f4d3958 L |
2317 | { NULL, 0, 0, 0, 0 } |
2318 | }; | |
2319 | ||
b35d266b | 2320 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 L |
2321 | { |
2322 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2323 | { NULL, 0, 0, 0, 0 } | |
2324 | }; | |
2325 | ||
b35d266b | 2326 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 L |
2327 | { |
2328 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2329 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2330 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2331 | { NULL, 0, 0, 0, 0 } | |
2332 | }; | |
2333 | ||
b35d266b | 2334 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 L |
2335 | { |
2336 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2337 | { NULL, 0, 0, 0, 0 } | |
2338 | }; | |
2339 | ||
b35d266b | 2340 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2341 | { |
45c5e9ed | 2342 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 | 2343 | { ".note", 5, -1, SHT_NOTE, 0 }, |
7f4d3958 L |
2344 | { NULL, 0, 0, 0, 0 } |
2345 | }; | |
2346 | ||
b35d266b | 2347 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 L |
2348 | { |
2349 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2350 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2351 | { NULL, 0, 0, 0, 0 } | |
2352 | }; | |
2353 | ||
b35d266b | 2354 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 L |
2355 | { |
2356 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2357 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
7dcb9820 AM |
2358 | { ".rela", 5, -1, SHT_RELA, 0 }, |
2359 | { ".rel", 4, -1, SHT_REL, 0 }, | |
7f4d3958 L |
2360 | { NULL, 0, 0, 0, 0 } |
2361 | }; | |
2362 | ||
b35d266b | 2363 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 L |
2364 | { |
2365 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2366 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2367 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
7dcb9820 AM |
2368 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, |
2369 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2370 | }; |
2371 | ||
b35d266b | 2372 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 L |
2373 | { |
2374 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2375 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2376 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2377 | { NULL, 0, 0, 0, 0 } | |
2378 | }; | |
2379 | ||
b35d266b | 2380 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2381 | { |
7f4d3958 L |
2382 | special_sections_b, /* 'b' */ |
2383 | special_sections_c, /* 'b' */ | |
2384 | special_sections_d, /* 'd' */ | |
2385 | NULL, /* 'e' */ | |
2386 | special_sections_f, /* 'f' */ | |
2387 | special_sections_g, /* 'g' */ | |
2388 | special_sections_h, /* 'h' */ | |
2389 | special_sections_i, /* 'i' */ | |
2390 | NULL, /* 'j' */ | |
2391 | NULL, /* 'k' */ | |
2392 | special_sections_l, /* 'l' */ | |
2393 | NULL, /* 'm' */ | |
2394 | special_sections_n, /* 'n' */ | |
2395 | NULL, /* 'o' */ | |
2396 | special_sections_p, /* 'p' */ | |
2397 | NULL, /* 'q' */ | |
2398 | special_sections_r, /* 'r' */ | |
2399 | special_sections_s, /* 's' */ | |
2400 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2401 | }; |
2402 | ||
551b43fd AM |
2403 | const struct bfd_elf_special_section * |
2404 | _bfd_elf_get_special_section (const char *name, | |
2405 | const struct bfd_elf_special_section *spec, | |
2406 | unsigned int rela) | |
2f89ff8d L |
2407 | { |
2408 | int i; | |
7f4d3958 | 2409 | int len; |
7f4d3958 | 2410 | |
551b43fd | 2411 | len = strlen (name); |
7f4d3958 | 2412 | |
551b43fd | 2413 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2414 | { |
2415 | int suffix_len; | |
551b43fd | 2416 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2417 | |
2418 | if (len < prefix_len) | |
2419 | continue; | |
551b43fd | 2420 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2421 | continue; |
2422 | ||
551b43fd | 2423 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2424 | if (suffix_len <= 0) |
2425 | { | |
2426 | if (name[prefix_len] != 0) | |
2427 | { | |
2428 | if (suffix_len == 0) | |
2429 | continue; | |
2430 | if (name[prefix_len] != '.' | |
2431 | && (suffix_len == -2 | |
551b43fd | 2432 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2433 | continue; |
2434 | } | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | if (len < prefix_len + suffix_len) | |
2439 | continue; | |
2440 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2441 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2442 | suffix_len) != 0) |
2443 | continue; | |
2444 | } | |
551b43fd | 2445 | return &spec[i]; |
7dcb9820 | 2446 | } |
2f89ff8d L |
2447 | |
2448 | return NULL; | |
2449 | } | |
2450 | ||
7dcb9820 | 2451 | const struct bfd_elf_special_section * |
29ef7005 | 2452 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2453 | { |
551b43fd AM |
2454 | int i; |
2455 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2456 | const struct elf_backend_data *bed; |
2f89ff8d L |
2457 | |
2458 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2459 | if (sec->name == NULL) |
2460 | return NULL; | |
2f89ff8d | 2461 | |
29ef7005 L |
2462 | bed = get_elf_backend_data (abfd); |
2463 | spec = bed->special_sections; | |
2464 | if (spec) | |
2465 | { | |
2466 | spec = _bfd_elf_get_special_section (sec->name, | |
2467 | bed->special_sections, | |
2468 | sec->use_rela_p); | |
2469 | if (spec != NULL) | |
2470 | return spec; | |
2471 | } | |
2472 | ||
551b43fd AM |
2473 | if (sec->name[0] != '.') |
2474 | return NULL; | |
2f89ff8d | 2475 | |
551b43fd AM |
2476 | i = sec->name[1] - 'b'; |
2477 | if (i < 0 || i > 't' - 'b') | |
2478 | return NULL; | |
2479 | ||
2480 | spec = special_sections[i]; | |
2f89ff8d | 2481 | |
551b43fd AM |
2482 | if (spec == NULL) |
2483 | return NULL; | |
2484 | ||
2485 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2486 | } |
2487 | ||
b34976b6 | 2488 | bfd_boolean |
217aa764 | 2489 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2490 | { |
2491 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2492 | const struct elf_backend_data *bed; |
7dcb9820 | 2493 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2494 | |
f0abc2a1 AM |
2495 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2496 | if (sdata == NULL) | |
2497 | { | |
217aa764 | 2498 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2499 | if (sdata == NULL) |
2500 | return FALSE; | |
217aa764 | 2501 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2502 | } |
bf572ba0 | 2503 | |
551b43fd AM |
2504 | /* Indicate whether or not this section should use RELA relocations. */ |
2505 | bed = get_elf_backend_data (abfd); | |
2506 | sec->use_rela_p = bed->default_use_rela_p; | |
2507 | ||
e843e0f8 L |
2508 | /* When we read a file, we don't need to set ELF section type and |
2509 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2510 | anyway. We will set ELF section type and flags for all linker | |
2511 | created sections. If user specifies BFD section flags, we will | |
2512 | set ELF section type and flags based on BFD section flags in | |
2513 | elf_fake_sections. */ | |
2514 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2515 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2516 | { |
551b43fd | 2517 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2518 | if (ssect != NULL) |
2519 | { | |
2520 | elf_section_type (sec) = ssect->type; | |
2521 | elf_section_flags (sec) = ssect->attr; | |
2522 | } | |
2f89ff8d L |
2523 | } |
2524 | ||
f592407e | 2525 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2526 | } |
2527 | ||
2528 | /* Create a new bfd section from an ELF program header. | |
2529 | ||
2530 | Since program segments have no names, we generate a synthetic name | |
2531 | of the form segment<NUM>, where NUM is generally the index in the | |
2532 | program header table. For segments that are split (see below) we | |
2533 | generate the names segment<NUM>a and segment<NUM>b. | |
2534 | ||
2535 | Note that some program segments may have a file size that is different than | |
2536 | (less than) the memory size. All this means is that at execution the | |
2537 | system must allocate the amount of memory specified by the memory size, | |
2538 | but only initialize it with the first "file size" bytes read from the | |
2539 | file. This would occur for example, with program segments consisting | |
2540 | of combined data+bss. | |
2541 | ||
2542 | To handle the above situation, this routine generates TWO bfd sections | |
2543 | for the single program segment. The first has the length specified by | |
2544 | the file size of the segment, and the second has the length specified | |
2545 | by the difference between the two sizes. In effect, the segment is split | |
2546 | into it's initialized and uninitialized parts. | |
2547 | ||
2548 | */ | |
2549 | ||
b34976b6 | 2550 | bfd_boolean |
217aa764 AM |
2551 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2552 | Elf_Internal_Phdr *hdr, | |
2553 | int index, | |
2554 | const char *typename) | |
252b5132 RH |
2555 | { |
2556 | asection *newsect; | |
2557 | char *name; | |
2558 | char namebuf[64]; | |
d4c88bbb | 2559 | size_t len; |
252b5132 RH |
2560 | int split; |
2561 | ||
2562 | split = ((hdr->p_memsz > 0) | |
2563 | && (hdr->p_filesz > 0) | |
2564 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2565 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2566 | len = strlen (namebuf) + 1; |
217aa764 | 2567 | name = bfd_alloc (abfd, len); |
252b5132 | 2568 | if (!name) |
b34976b6 | 2569 | return FALSE; |
d4c88bbb | 2570 | memcpy (name, namebuf, len); |
252b5132 RH |
2571 | newsect = bfd_make_section (abfd, name); |
2572 | if (newsect == NULL) | |
b34976b6 | 2573 | return FALSE; |
252b5132 RH |
2574 | newsect->vma = hdr->p_vaddr; |
2575 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2576 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2577 | newsect->filepos = hdr->p_offset; |
2578 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2579 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2580 | if (hdr->p_type == PT_LOAD) |
2581 | { | |
2582 | newsect->flags |= SEC_ALLOC; | |
2583 | newsect->flags |= SEC_LOAD; | |
2584 | if (hdr->p_flags & PF_X) | |
2585 | { | |
2586 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2587 | may be data. */ |
252b5132 RH |
2588 | newsect->flags |= SEC_CODE; |
2589 | } | |
2590 | } | |
2591 | if (!(hdr->p_flags & PF_W)) | |
2592 | { | |
2593 | newsect->flags |= SEC_READONLY; | |
2594 | } | |
2595 | ||
2596 | if (split) | |
2597 | { | |
27ac83bf | 2598 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2599 | len = strlen (namebuf) + 1; |
217aa764 | 2600 | name = bfd_alloc (abfd, len); |
252b5132 | 2601 | if (!name) |
b34976b6 | 2602 | return FALSE; |
d4c88bbb | 2603 | memcpy (name, namebuf, len); |
252b5132 RH |
2604 | newsect = bfd_make_section (abfd, name); |
2605 | if (newsect == NULL) | |
b34976b6 | 2606 | return FALSE; |
252b5132 RH |
2607 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2608 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2609 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2610 | if (hdr->p_type == PT_LOAD) |
2611 | { | |
2612 | newsect->flags |= SEC_ALLOC; | |
2613 | if (hdr->p_flags & PF_X) | |
2614 | newsect->flags |= SEC_CODE; | |
2615 | } | |
2616 | if (!(hdr->p_flags & PF_W)) | |
2617 | newsect->flags |= SEC_READONLY; | |
2618 | } | |
2619 | ||
b34976b6 | 2620 | return TRUE; |
252b5132 RH |
2621 | } |
2622 | ||
b34976b6 | 2623 | bfd_boolean |
217aa764 | 2624 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2625 | { |
9c5bfbb7 | 2626 | const struct elf_backend_data *bed; |
20cfcaae NC |
2627 | |
2628 | switch (hdr->p_type) | |
2629 | { | |
2630 | case PT_NULL: | |
2631 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2632 | ||
2633 | case PT_LOAD: | |
2634 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2635 | ||
2636 | case PT_DYNAMIC: | |
2637 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2638 | ||
2639 | case PT_INTERP: | |
2640 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2641 | ||
2642 | case PT_NOTE: | |
2643 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2644 | return FALSE; |
217aa764 | 2645 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2646 | return FALSE; |
2647 | return TRUE; | |
20cfcaae NC |
2648 | |
2649 | case PT_SHLIB: | |
2650 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2651 | ||
2652 | case PT_PHDR: | |
2653 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2654 | ||
811072d8 RM |
2655 | case PT_GNU_EH_FRAME: |
2656 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2657 | "eh_frame_hdr"); | |
2658 | ||
9ee5e499 JJ |
2659 | case PT_GNU_STACK: |
2660 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2661 | ||
8c37241b JJ |
2662 | case PT_GNU_RELRO: |
2663 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2664 | ||
20cfcaae | 2665 | default: |
8c1acd09 | 2666 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2667 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2668 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2669 | } |
2670 | } | |
2671 | ||
23bc299b | 2672 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2673 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2674 | relocations; otherwise, we use REL relocations. */ |
2675 | ||
b34976b6 | 2676 | bfd_boolean |
217aa764 AM |
2677 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2678 | Elf_Internal_Shdr *rel_hdr, | |
2679 | asection *asect, | |
2680 | bfd_boolean use_rela_p) | |
23bc299b MM |
2681 | { |
2682 | char *name; | |
9c5bfbb7 | 2683 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2684 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2685 | |
dc810e39 | 2686 | name = bfd_alloc (abfd, amt); |
23bc299b | 2687 | if (name == NULL) |
b34976b6 | 2688 | return FALSE; |
23bc299b MM |
2689 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2690 | rel_hdr->sh_name = | |
2b0f7ef9 | 2691 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2692 | FALSE); |
23bc299b | 2693 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2694 | return FALSE; |
23bc299b MM |
2695 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2696 | rel_hdr->sh_entsize = (use_rela_p | |
2697 | ? bed->s->sizeof_rela | |
2698 | : bed->s->sizeof_rel); | |
45d6a902 | 2699 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2700 | rel_hdr->sh_flags = 0; |
2701 | rel_hdr->sh_addr = 0; | |
2702 | rel_hdr->sh_size = 0; | |
2703 | rel_hdr->sh_offset = 0; | |
2704 | ||
b34976b6 | 2705 | return TRUE; |
23bc299b MM |
2706 | } |
2707 | ||
252b5132 RH |
2708 | /* Set up an ELF internal section header for a section. */ |
2709 | ||
252b5132 | 2710 | static void |
217aa764 | 2711 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2712 | { |
9c5bfbb7 | 2713 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2714 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2715 | Elf_Internal_Shdr *this_hdr; |
2716 | ||
2717 | if (*failedptr) | |
2718 | { | |
2719 | /* We already failed; just get out of the bfd_map_over_sections | |
2720 | loop. */ | |
2721 | return; | |
2722 | } | |
2723 | ||
2724 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2725 | ||
e57b5356 AM |
2726 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2727 | asect->name, FALSE); | |
2728 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2729 | { |
b34976b6 | 2730 | *failedptr = TRUE; |
252b5132 RH |
2731 | return; |
2732 | } | |
2733 | ||
a4d8e49b | 2734 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2735 | |
2736 | if ((asect->flags & SEC_ALLOC) != 0 | |
2737 | || asect->user_set_vma) | |
2738 | this_hdr->sh_addr = asect->vma; | |
2739 | else | |
2740 | this_hdr->sh_addr = 0; | |
2741 | ||
2742 | this_hdr->sh_offset = 0; | |
eea6121a | 2743 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2744 | this_hdr->sh_link = 0; |
2745 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2746 | /* The sh_entsize and sh_info fields may have been set already by | |
2747 | copy_private_section_data. */ | |
2748 | ||
2749 | this_hdr->bfd_section = asect; | |
2750 | this_hdr->contents = NULL; | |
2751 | ||
3cddba1e L |
2752 | /* If the section type is unspecified, we set it based on |
2753 | asect->flags. */ | |
2754 | if (this_hdr->sh_type == SHT_NULL) | |
2755 | { | |
45c5e9ed | 2756 | if ((asect->flags & SEC_GROUP) != 0) |
ccd2ec6a | 2757 | this_hdr->sh_type = SHT_GROUP; |
45c5e9ed | 2758 | else if ((asect->flags & SEC_ALLOC) != 0 |
1ea63fd2 AM |
2759 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2760 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
3cddba1e L |
2761 | this_hdr->sh_type = SHT_NOBITS; |
2762 | else | |
2763 | this_hdr->sh_type = SHT_PROGBITS; | |
2764 | } | |
2765 | ||
2f89ff8d | 2766 | switch (this_hdr->sh_type) |
252b5132 | 2767 | { |
2f89ff8d | 2768 | default: |
2f89ff8d L |
2769 | break; |
2770 | ||
2771 | case SHT_STRTAB: | |
2772 | case SHT_INIT_ARRAY: | |
2773 | case SHT_FINI_ARRAY: | |
2774 | case SHT_PREINIT_ARRAY: | |
2775 | case SHT_NOTE: | |
2776 | case SHT_NOBITS: | |
2777 | case SHT_PROGBITS: | |
2778 | break; | |
2779 | ||
2780 | case SHT_HASH: | |
c7ac6ff8 | 2781 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2782 | break; |
5de3bf90 | 2783 | |
2f89ff8d | 2784 | case SHT_DYNSYM: |
252b5132 | 2785 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2786 | break; |
2787 | ||
2788 | case SHT_DYNAMIC: | |
252b5132 | 2789 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2790 | break; |
2791 | ||
2792 | case SHT_RELA: | |
2793 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2794 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2795 | break; | |
2796 | ||
2797 | case SHT_REL: | |
2798 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2799 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2800 | break; | |
2801 | ||
2802 | case SHT_GNU_versym: | |
252b5132 | 2803 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2804 | break; |
2805 | ||
2806 | case SHT_GNU_verdef: | |
252b5132 RH |
2807 | this_hdr->sh_entsize = 0; |
2808 | /* objcopy or strip will copy over sh_info, but may not set | |
2809 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2810 | zero. */ | |
2811 | if (this_hdr->sh_info == 0) | |
2812 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2813 | else | |
2814 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2815 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2816 | break; |
2817 | ||
2818 | case SHT_GNU_verneed: | |
252b5132 RH |
2819 | this_hdr->sh_entsize = 0; |
2820 | /* objcopy or strip will copy over sh_info, but may not set | |
2821 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2822 | zero. */ | |
2823 | if (this_hdr->sh_info == 0) | |
2824 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2825 | else | |
2826 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2827 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2828 | break; |
2829 | ||
2830 | case SHT_GROUP: | |
dbb410c3 | 2831 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2832 | break; |
fdc90cb4 JJ |
2833 | |
2834 | case SHT_GNU_HASH: | |
2835 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2836 | break; | |
dbb410c3 | 2837 | } |
252b5132 RH |
2838 | |
2839 | if ((asect->flags & SEC_ALLOC) != 0) | |
2840 | this_hdr->sh_flags |= SHF_ALLOC; | |
2841 | if ((asect->flags & SEC_READONLY) == 0) | |
2842 | this_hdr->sh_flags |= SHF_WRITE; | |
2843 | if ((asect->flags & SEC_CODE) != 0) | |
2844 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2845 | if ((asect->flags & SEC_MERGE) != 0) |
2846 | { | |
2847 | this_hdr->sh_flags |= SHF_MERGE; | |
2848 | this_hdr->sh_entsize = asect->entsize; | |
2849 | if ((asect->flags & SEC_STRINGS) != 0) | |
2850 | this_hdr->sh_flags |= SHF_STRINGS; | |
2851 | } | |
1126897b | 2852 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2853 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2854 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2855 | { |
2856 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2857 | if (asect->size == 0 |
2858 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2859 | { |
3a800eb9 | 2860 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2861 | |
704afa60 | 2862 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2863 | if (o != NULL) |
2864 | { | |
704afa60 | 2865 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2866 | if (this_hdr->sh_size != 0) |
2867 | this_hdr->sh_type = SHT_NOBITS; | |
2868 | } | |
704afa60 JJ |
2869 | } |
2870 | } | |
252b5132 RH |
2871 | |
2872 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2873 | if (bed->elf_backend_fake_sections |
2874 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2875 | *failedptr = TRUE; |
252b5132 RH |
2876 | |
2877 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2878 | SHT_REL[A] section. If two relocation sections are required for |
2879 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2880 | create the other. */ |
23bc299b | 2881 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2882 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2883 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2884 | asect, |
68bfbfcc | 2885 | asect->use_rela_p)) |
b34976b6 | 2886 | *failedptr = TRUE; |
252b5132 RH |
2887 | } |
2888 | ||
dbb410c3 AM |
2889 | /* Fill in the contents of a SHT_GROUP section. */ |
2890 | ||
1126897b | 2891 | void |
217aa764 | 2892 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2893 | { |
217aa764 | 2894 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2895 | unsigned long symindx; |
9dce4196 | 2896 | asection *elt, *first; |
dbb410c3 | 2897 | unsigned char *loc; |
b34976b6 | 2898 | bfd_boolean gas; |
dbb410c3 | 2899 | |
7e4111ad L |
2900 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2901 | elfxx-ia64.c. */ | |
2902 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2903 | || *failedptr) |
2904 | return; | |
2905 | ||
1126897b AM |
2906 | symindx = 0; |
2907 | if (elf_group_id (sec) != NULL) | |
2908 | symindx = elf_group_id (sec)->udata.i; | |
2909 | ||
2910 | if (symindx == 0) | |
2911 | { | |
2912 | /* If called from the assembler, swap_out_syms will have set up | |
2913 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2914 | if (elf_section_syms (abfd) != NULL) | |
2915 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2916 | else | |
2917 | symindx = sec->target_index; | |
2918 | } | |
dbb410c3 AM |
2919 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2920 | ||
1126897b | 2921 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2922 | gas = TRUE; |
dbb410c3 AM |
2923 | if (sec->contents == NULL) |
2924 | { | |
b34976b6 | 2925 | gas = FALSE; |
eea6121a | 2926 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2927 | |
2928 | /* Arrange for the section to be written out. */ | |
2929 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2930 | if (sec->contents == NULL) |
2931 | { | |
b34976b6 | 2932 | *failedptr = TRUE; |
dbb410c3 AM |
2933 | return; |
2934 | } | |
2935 | } | |
2936 | ||
eea6121a | 2937 | loc = sec->contents + sec->size; |
dbb410c3 | 2938 | |
9dce4196 AM |
2939 | /* Get the pointer to the first section in the group that gas |
2940 | squirreled away here. objcopy arranges for this to be set to the | |
2941 | start of the input section group. */ | |
2942 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2943 | |
2944 | /* First element is a flag word. Rest of section is elf section | |
2945 | indices for all the sections of the group. Write them backwards | |
2946 | just to keep the group in the same order as given in .section | |
2947 | directives, not that it matters. */ | |
2948 | while (elt != NULL) | |
2949 | { | |
9dce4196 AM |
2950 | asection *s; |
2951 | unsigned int idx; | |
2952 | ||
dbb410c3 | 2953 | loc -= 4; |
9dce4196 AM |
2954 | s = elt; |
2955 | if (!gas) | |
2956 | s = s->output_section; | |
2957 | idx = 0; | |
2958 | if (s != NULL) | |
2959 | idx = elf_section_data (s)->this_idx; | |
2960 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2961 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2962 | if (elt == first) |
2963 | break; | |
dbb410c3 AM |
2964 | } |
2965 | ||
3d7f7666 | 2966 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2967 | abort (); |
dbb410c3 | 2968 | |
9dce4196 | 2969 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2970 | } |
2971 | ||
252b5132 RH |
2972 | /* Assign all ELF section numbers. The dummy first section is handled here |
2973 | too. The link/info pointers for the standard section types are filled | |
2974 | in here too, while we're at it. */ | |
2975 | ||
b34976b6 | 2976 | static bfd_boolean |
da9f89d4 | 2977 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2978 | { |
2979 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2980 | asection *sec; | |
2b0f7ef9 | 2981 | unsigned int section_number, secn; |
252b5132 | 2982 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2983 | struct bfd_elf_section_data *d; |
252b5132 RH |
2984 | |
2985 | section_number = 1; | |
2986 | ||
2b0f7ef9 JJ |
2987 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2988 | ||
da9f89d4 L |
2989 | /* SHT_GROUP sections are in relocatable files only. */ |
2990 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2991 | { |
da9f89d4 | 2992 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2993 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2994 | { |
5daa8fe7 | 2995 | d = elf_section_data (sec); |
da9f89d4 L |
2996 | |
2997 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2998 | { | |
5daa8fe7 | 2999 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
3000 | { |
3001 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 3002 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 3003 | abfd->section_count--; |
da9f89d4 L |
3004 | } |
3005 | else | |
3006 | { | |
3007 | if (section_number == SHN_LORESERVE) | |
3008 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3009 | d->this_idx = section_number++; | |
3010 | } | |
3011 | } | |
47cc2cf5 PB |
3012 | } |
3013 | } | |
3014 | ||
3015 | for (sec = abfd->sections; sec; sec = sec->next) | |
3016 | { | |
3017 | d = elf_section_data (sec); | |
3018 | ||
3019 | if (d->this_hdr.sh_type != SHT_GROUP) | |
3020 | { | |
3021 | if (section_number == SHN_LORESERVE) | |
3022 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3023 | d->this_idx = section_number++; | |
3024 | } | |
2b0f7ef9 | 3025 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
3026 | if ((sec->flags & SEC_RELOC) == 0) |
3027 | d->rel_idx = 0; | |
3028 | else | |
2b0f7ef9 | 3029 | { |
9ad5cbcf AM |
3030 | if (section_number == SHN_LORESERVE) |
3031 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3032 | d->rel_idx = section_number++; |
3033 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
3034 | } | |
23bc299b MM |
3035 | |
3036 | if (d->rel_hdr2) | |
2b0f7ef9 | 3037 | { |
9ad5cbcf AM |
3038 | if (section_number == SHN_LORESERVE) |
3039 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
3040 | d->rel_idx2 = section_number++; |
3041 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
3042 | } | |
23bc299b MM |
3043 | else |
3044 | d->rel_idx2 = 0; | |
252b5132 RH |
3045 | } |
3046 | ||
9ad5cbcf AM |
3047 | if (section_number == SHN_LORESERVE) |
3048 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3049 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 3050 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 3051 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
3052 | |
3053 | if (bfd_get_symcount (abfd) > 0) | |
3054 | { | |
9ad5cbcf AM |
3055 | if (section_number == SHN_LORESERVE) |
3056 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3057 | t->symtab_section = section_number++; |
2b0f7ef9 | 3058 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
3059 | if (section_number > SHN_LORESERVE - 2) |
3060 | { | |
3061 | if (section_number == SHN_LORESERVE) | |
3062 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3063 | t->symtab_shndx_section = section_number++; | |
3064 | t->symtab_shndx_hdr.sh_name | |
3065 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 3066 | ".symtab_shndx", FALSE); |
9ad5cbcf | 3067 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 3068 | return FALSE; |
9ad5cbcf AM |
3069 | } |
3070 | if (section_number == SHN_LORESERVE) | |
3071 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3072 | t->strtab_section = section_number++; |
2b0f7ef9 | 3073 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3074 | } |
3075 | ||
2b0f7ef9 JJ |
3076 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
3077 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
3078 | |
3079 | elf_numsections (abfd) = section_number; | |
252b5132 | 3080 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3081 | if (section_number > SHN_LORESERVE) |
3082 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3083 | |
3084 | /* Set up the list of section header pointers, in agreement with the | |
3085 | indices. */ | |
d0fb9a8d | 3086 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 3087 | if (i_shdrp == NULL) |
b34976b6 | 3088 | return FALSE; |
252b5132 | 3089 | |
d0fb9a8d | 3090 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3091 | if (i_shdrp[0] == NULL) |
3092 | { | |
3093 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3094 | return FALSE; |
252b5132 | 3095 | } |
252b5132 RH |
3096 | |
3097 | elf_elfsections (abfd) = i_shdrp; | |
3098 | ||
3099 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3100 | if (bfd_get_symcount (abfd) > 0) | |
3101 | { | |
3102 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3103 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3104 | { | |
3105 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3106 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3107 | } | |
252b5132 RH |
3108 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3109 | t->symtab_hdr.sh_link = t->strtab_section; | |
3110 | } | |
38ce5b11 | 3111 | |
252b5132 RH |
3112 | for (sec = abfd->sections; sec; sec = sec->next) |
3113 | { | |
3114 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3115 | asection *s; | |
3116 | const char *name; | |
3117 | ||
3118 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3119 | if (d->rel_idx != 0) | |
3120 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3121 | if (d->rel_idx2 != 0) |
3122 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3123 | |
3124 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3125 | ||
3126 | /* sh_link of a reloc section is the section index of the symbol | |
3127 | table. sh_info is the section index of the section to which | |
3128 | the relocation entries apply. */ | |
3129 | if (d->rel_idx != 0) | |
3130 | { | |
3131 | d->rel_hdr.sh_link = t->symtab_section; | |
3132 | d->rel_hdr.sh_info = d->this_idx; | |
3133 | } | |
23bc299b MM |
3134 | if (d->rel_idx2 != 0) |
3135 | { | |
3136 | d->rel_hdr2->sh_link = t->symtab_section; | |
3137 | d->rel_hdr2->sh_info = d->this_idx; | |
3138 | } | |
252b5132 | 3139 | |
38ce5b11 L |
3140 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3141 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3142 | { | |
3143 | s = elf_linked_to_section (sec); | |
3144 | if (s) | |
38ce5b11 | 3145 | { |
f2876037 | 3146 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3147 | if (link_info != NULL) |
38ce5b11 | 3148 | { |
f2876037 | 3149 | /* Check discarded linkonce section. */ |
ccd2ec6a | 3150 | if (elf_discarded_section (s)) |
38ce5b11 | 3151 | { |
ccd2ec6a L |
3152 | asection *kept; |
3153 | (*_bfd_error_handler) | |
3154 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3155 | abfd, d->this_hdr.bfd_section, | |
3156 | s, s->owner); | |
3157 | /* Point to the kept section if it has the same | |
3158 | size as the discarded one. */ | |
3159 | kept = _bfd_elf_check_kept_section (s); | |
3160 | if (kept == NULL) | |
185d09ad | 3161 | { |
ccd2ec6a L |
3162 | bfd_set_error (bfd_error_bad_value); |
3163 | return FALSE; | |
185d09ad | 3164 | } |
ccd2ec6a | 3165 | s = kept; |
38ce5b11 | 3166 | } |
e424ecc8 | 3167 | |
ccd2ec6a L |
3168 | s = s->output_section; |
3169 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3170 | } |
f2876037 L |
3171 | else |
3172 | { | |
3173 | /* Handle objcopy. */ | |
3174 | if (s->output_section == NULL) | |
3175 | { | |
3176 | (*_bfd_error_handler) | |
3177 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3178 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3179 | bfd_set_error (bfd_error_bad_value); | |
3180 | return FALSE; | |
3181 | } | |
3182 | s = s->output_section; | |
3183 | } | |
ccd2ec6a L |
3184 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3185 | } | |
3186 | else | |
3187 | { | |
3188 | /* PR 290: | |
3189 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3190 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3191 | sh_info fields. Hence we could get the situation | |
3192 | where s is NULL. */ | |
3193 | const struct elf_backend_data *bed | |
3194 | = get_elf_backend_data (abfd); | |
3195 | if (bed->link_order_error_handler) | |
3196 | bed->link_order_error_handler | |
3197 | (_("%B: warning: sh_link not set for section `%A'"), | |
3198 | abfd, sec); | |
38ce5b11 L |
3199 | } |
3200 | } | |
3201 | ||
252b5132 RH |
3202 | switch (d->this_hdr.sh_type) |
3203 | { | |
3204 | case SHT_REL: | |
3205 | case SHT_RELA: | |
3206 | /* A reloc section which we are treating as a normal BFD | |
3207 | section. sh_link is the section index of the symbol | |
3208 | table. sh_info is the section index of the section to | |
3209 | which the relocation entries apply. We assume that an | |
3210 | allocated reloc section uses the dynamic symbol table. | |
3211 | FIXME: How can we be sure? */ | |
3212 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3213 | if (s != NULL) | |
3214 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3215 | ||
3216 | /* We look up the section the relocs apply to by name. */ | |
3217 | name = sec->name; | |
3218 | if (d->this_hdr.sh_type == SHT_REL) | |
3219 | name += 4; | |
3220 | else | |
3221 | name += 5; | |
3222 | s = bfd_get_section_by_name (abfd, name); | |
3223 | if (s != NULL) | |
3224 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3225 | break; | |
3226 | ||
3227 | case SHT_STRTAB: | |
3228 | /* We assume that a section named .stab*str is a stabs | |
3229 | string section. We look for a section with the same name | |
3230 | but without the trailing ``str'', and set its sh_link | |
3231 | field to point to this section. */ | |
3232 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3233 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3234 | { | |
3235 | size_t len; | |
3236 | char *alc; | |
3237 | ||
3238 | len = strlen (sec->name); | |
217aa764 | 3239 | alc = bfd_malloc (len - 2); |
252b5132 | 3240 | if (alc == NULL) |
b34976b6 | 3241 | return FALSE; |
d4c88bbb | 3242 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3243 | alc[len - 3] = '\0'; |
3244 | s = bfd_get_section_by_name (abfd, alc); | |
3245 | free (alc); | |
3246 | if (s != NULL) | |
3247 | { | |
3248 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3249 | ||
3250 | /* This is a .stab section. */ | |
0594c12d AM |
3251 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3252 | elf_section_data (s)->this_hdr.sh_entsize | |
3253 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3254 | } |
3255 | } | |
3256 | break; | |
3257 | ||
3258 | case SHT_DYNAMIC: | |
3259 | case SHT_DYNSYM: | |
3260 | case SHT_GNU_verneed: | |
3261 | case SHT_GNU_verdef: | |
3262 | /* sh_link is the section header index of the string table | |
3263 | used for the dynamic entries, or the symbol table, or the | |
3264 | version strings. */ | |
3265 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3266 | if (s != NULL) | |
3267 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3268 | break; | |
3269 | ||
7f1204bb JJ |
3270 | case SHT_GNU_LIBLIST: |
3271 | /* sh_link is the section header index of the prelink library | |
3272 | list | |
3273 | used for the dynamic entries, or the symbol table, or the | |
3274 | version strings. */ | |
3275 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3276 | ? ".dynstr" : ".gnu.libstr"); | |
3277 | if (s != NULL) | |
3278 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3279 | break; | |
3280 | ||
252b5132 | 3281 | case SHT_HASH: |
fdc90cb4 | 3282 | case SHT_GNU_HASH: |
252b5132 RH |
3283 | case SHT_GNU_versym: |
3284 | /* sh_link is the section header index of the symbol table | |
3285 | this hash table or version table is for. */ | |
3286 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3287 | if (s != NULL) | |
3288 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3289 | break; | |
dbb410c3 AM |
3290 | |
3291 | case SHT_GROUP: | |
3292 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3293 | } |
3294 | } | |
3295 | ||
2b0f7ef9 | 3296 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3297 | if (i_shdrp[secn] == NULL) |
3298 | i_shdrp[secn] = i_shdrp[0]; | |
3299 | else | |
3300 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3301 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3302 | return TRUE; |
252b5132 RH |
3303 | } |
3304 | ||
3305 | /* Map symbol from it's internal number to the external number, moving | |
3306 | all local symbols to be at the head of the list. */ | |
3307 | ||
5372391b | 3308 | static bfd_boolean |
217aa764 | 3309 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3310 | { |
3311 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3312 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3313 | if (bed->elf_backend_sym_is_global) |
3314 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3315 | |
3316 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3317 | || bfd_is_und_section (bfd_get_section (sym)) | |
3318 | || bfd_is_com_section (bfd_get_section (sym))); | |
3319 | } | |
3320 | ||
5372391b AM |
3321 | /* Don't output section symbols for sections that are not going to be |
3322 | output. Also, don't output section symbols for reloc and other | |
3323 | special sections. */ | |
3324 | ||
3325 | static bfd_boolean | |
3326 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3327 | { | |
3328 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3329 | && (sym->value != 0 | |
3330 | || (sym->section->owner != abfd | |
3331 | && (sym->section->output_section->owner != abfd | |
3332 | || sym->section->output_offset != 0)))); | |
3333 | } | |
3334 | ||
b34976b6 | 3335 | static bfd_boolean |
217aa764 | 3336 | elf_map_symbols (bfd *abfd) |
252b5132 | 3337 | { |
dc810e39 | 3338 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3339 | asymbol **syms = bfd_get_outsymbols (abfd); |
3340 | asymbol **sect_syms; | |
dc810e39 AM |
3341 | unsigned int num_locals = 0; |
3342 | unsigned int num_globals = 0; | |
3343 | unsigned int num_locals2 = 0; | |
3344 | unsigned int num_globals2 = 0; | |
252b5132 | 3345 | int max_index = 0; |
dc810e39 | 3346 | unsigned int idx; |
252b5132 RH |
3347 | asection *asect; |
3348 | asymbol **new_syms; | |
252b5132 RH |
3349 | |
3350 | #ifdef DEBUG | |
3351 | fprintf (stderr, "elf_map_symbols\n"); | |
3352 | fflush (stderr); | |
3353 | #endif | |
3354 | ||
252b5132 RH |
3355 | for (asect = abfd->sections; asect; asect = asect->next) |
3356 | { | |
3357 | if (max_index < asect->index) | |
3358 | max_index = asect->index; | |
3359 | } | |
3360 | ||
3361 | max_index++; | |
d0fb9a8d | 3362 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3363 | if (sect_syms == NULL) |
b34976b6 | 3364 | return FALSE; |
252b5132 | 3365 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3366 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3367 | |
079e9a2f AM |
3368 | /* Init sect_syms entries for any section symbols we have already |
3369 | decided to output. */ | |
252b5132 RH |
3370 | for (idx = 0; idx < symcount; idx++) |
3371 | { | |
dc810e39 | 3372 | asymbol *sym = syms[idx]; |
c044fabd | 3373 | |
252b5132 | 3374 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3375 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3376 | { |
5372391b | 3377 | asection *sec = sym->section; |
252b5132 | 3378 | |
5372391b AM |
3379 | if (sec->owner != abfd) |
3380 | sec = sec->output_section; | |
252b5132 | 3381 | |
5372391b | 3382 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3383 | } |
3384 | } | |
3385 | ||
252b5132 RH |
3386 | /* Classify all of the symbols. */ |
3387 | for (idx = 0; idx < symcount; idx++) | |
3388 | { | |
5372391b AM |
3389 | if (ignore_section_sym (abfd, syms[idx])) |
3390 | continue; | |
252b5132 RH |
3391 | if (!sym_is_global (abfd, syms[idx])) |
3392 | num_locals++; | |
3393 | else | |
3394 | num_globals++; | |
3395 | } | |
079e9a2f | 3396 | |
5372391b | 3397 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3398 | sections will already have a section symbol in outsymbols, but |
3399 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3400 | at least in that case. */ | |
252b5132 RH |
3401 | for (asect = abfd->sections; asect; asect = asect->next) |
3402 | { | |
079e9a2f | 3403 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3404 | { |
079e9a2f | 3405 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3406 | num_locals++; |
3407 | else | |
3408 | num_globals++; | |
252b5132 RH |
3409 | } |
3410 | } | |
3411 | ||
3412 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3413 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3414 | |
252b5132 | 3415 | if (new_syms == NULL) |
b34976b6 | 3416 | return FALSE; |
252b5132 RH |
3417 | |
3418 | for (idx = 0; idx < symcount; idx++) | |
3419 | { | |
3420 | asymbol *sym = syms[idx]; | |
dc810e39 | 3421 | unsigned int i; |
252b5132 | 3422 | |
5372391b AM |
3423 | if (ignore_section_sym (abfd, sym)) |
3424 | continue; | |
252b5132 RH |
3425 | if (!sym_is_global (abfd, sym)) |
3426 | i = num_locals2++; | |
3427 | else | |
3428 | i = num_locals + num_globals2++; | |
3429 | new_syms[i] = sym; | |
3430 | sym->udata.i = i + 1; | |
3431 | } | |
3432 | for (asect = abfd->sections; asect; asect = asect->next) | |
3433 | { | |
079e9a2f | 3434 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3435 | { |
079e9a2f | 3436 | asymbol *sym = asect->symbol; |
dc810e39 | 3437 | unsigned int i; |
252b5132 | 3438 | |
079e9a2f | 3439 | sect_syms[asect->index] = sym; |
252b5132 RH |
3440 | if (!sym_is_global (abfd, sym)) |
3441 | i = num_locals2++; | |
3442 | else | |
3443 | i = num_locals + num_globals2++; | |
3444 | new_syms[i] = sym; | |
3445 | sym->udata.i = i + 1; | |
3446 | } | |
3447 | } | |
3448 | ||
3449 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3450 | ||
3451 | elf_num_locals (abfd) = num_locals; | |
3452 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3453 | return TRUE; |
252b5132 RH |
3454 | } |
3455 | ||
3456 | /* Align to the maximum file alignment that could be required for any | |
3457 | ELF data structure. */ | |
3458 | ||
268b6b39 | 3459 | static inline file_ptr |
217aa764 | 3460 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3461 | { |
3462 | return (off + align - 1) & ~(align - 1); | |
3463 | } | |
3464 | ||
3465 | /* Assign a file position to a section, optionally aligning to the | |
3466 | required section alignment. */ | |
3467 | ||
217aa764 AM |
3468 | file_ptr |
3469 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3470 | file_ptr offset, | |
3471 | bfd_boolean align) | |
252b5132 RH |
3472 | { |
3473 | if (align) | |
3474 | { | |
3475 | unsigned int al; | |
3476 | ||
3477 | al = i_shdrp->sh_addralign; | |
3478 | if (al > 1) | |
3479 | offset = BFD_ALIGN (offset, al); | |
3480 | } | |
3481 | i_shdrp->sh_offset = offset; | |
3482 | if (i_shdrp->bfd_section != NULL) | |
3483 | i_shdrp->bfd_section->filepos = offset; | |
3484 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3485 | offset += i_shdrp->sh_size; | |
3486 | return offset; | |
3487 | } | |
3488 | ||
3489 | /* Compute the file positions we are going to put the sections at, and | |
3490 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3491 | is not NULL, this is being called by the ELF backend linker. */ | |
3492 | ||
b34976b6 | 3493 | bfd_boolean |
217aa764 AM |
3494 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3495 | struct bfd_link_info *link_info) | |
252b5132 | 3496 | { |
9c5bfbb7 | 3497 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3498 | bfd_boolean failed; |
4b6c0f2f | 3499 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3500 | Elf_Internal_Shdr *shstrtab_hdr; |
3501 | ||
3502 | if (abfd->output_has_begun) | |
b34976b6 | 3503 | return TRUE; |
252b5132 RH |
3504 | |
3505 | /* Do any elf backend specific processing first. */ | |
3506 | if (bed->elf_backend_begin_write_processing) | |
3507 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3508 | ||
3509 | if (! prep_headers (abfd)) | |
b34976b6 | 3510 | return FALSE; |
252b5132 | 3511 | |
e6c51ed4 NC |
3512 | /* Post process the headers if necessary. */ |
3513 | if (bed->elf_backend_post_process_headers) | |
3514 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3515 | ||
b34976b6 | 3516 | failed = FALSE; |
252b5132 RH |
3517 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3518 | if (failed) | |
b34976b6 | 3519 | return FALSE; |
252b5132 | 3520 | |
da9f89d4 | 3521 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3522 | return FALSE; |
252b5132 RH |
3523 | |
3524 | /* The backend linker builds symbol table information itself. */ | |
3525 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3526 | { | |
3527 | /* Non-zero if doing a relocatable link. */ | |
3528 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3529 | ||
3530 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3531 | return FALSE; |
252b5132 RH |
3532 | } |
3533 | ||
1126897b | 3534 | if (link_info == NULL) |
dbb410c3 | 3535 | { |
1126897b | 3536 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3537 | if (failed) |
b34976b6 | 3538 | return FALSE; |
dbb410c3 AM |
3539 | } |
3540 | ||
252b5132 RH |
3541 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3542 | /* sh_name was set in prep_headers. */ | |
3543 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3544 | shstrtab_hdr->sh_flags = 0; | |
3545 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3546 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3547 | shstrtab_hdr->sh_entsize = 0; |
3548 | shstrtab_hdr->sh_link = 0; | |
3549 | shstrtab_hdr->sh_info = 0; | |
3550 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3551 | shstrtab_hdr->sh_addralign = 1; | |
3552 | ||
c84fca4d | 3553 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3554 | return FALSE; |
252b5132 RH |
3555 | |
3556 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3557 | { | |
3558 | file_ptr off; | |
3559 | Elf_Internal_Shdr *hdr; | |
3560 | ||
3561 | off = elf_tdata (abfd)->next_file_pos; | |
3562 | ||
3563 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3564 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3565 | |
9ad5cbcf AM |
3566 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3567 | if (hdr->sh_size != 0) | |
b34976b6 | 3568 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3569 | |
252b5132 | 3570 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3571 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3572 | |
3573 | elf_tdata (abfd)->next_file_pos = off; | |
3574 | ||
3575 | /* Now that we know where the .strtab section goes, write it | |
3576 | out. */ | |
3577 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3578 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3579 | return FALSE; |
252b5132 RH |
3580 | _bfd_stringtab_free (strtab); |
3581 | } | |
3582 | ||
b34976b6 | 3583 | abfd->output_has_begun = TRUE; |
252b5132 | 3584 | |
b34976b6 | 3585 | return TRUE; |
252b5132 RH |
3586 | } |
3587 | ||
8ded5a0f AM |
3588 | /* Make an initial estimate of the size of the program header. If we |
3589 | get the number wrong here, we'll redo section placement. */ | |
3590 | ||
3591 | static bfd_size_type | |
3592 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3593 | { | |
3594 | size_t segs; | |
3595 | asection *s; | |
3596 | const struct elf_backend_data *bed; | |
3597 | ||
3598 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3599 | and one for data. */ | |
3600 | segs = 2; | |
3601 | ||
3602 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3603 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3604 | { | |
3605 | /* If we have a loadable interpreter section, we need a | |
3606 | PT_INTERP segment. In this case, assume we also need a | |
3607 | PT_PHDR segment, although that may not be true for all | |
3608 | targets. */ | |
3609 | segs += 2; | |
3610 | } | |
3611 | ||
3612 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3613 | { | |
3614 | /* We need a PT_DYNAMIC segment. */ | |
3615 | ++segs; | |
3616 | } | |
3617 | ||
3618 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3619 | { | |
3620 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3621 | ++segs; | |
3622 | } | |
3623 | ||
3624 | if (elf_tdata (abfd)->stack_flags) | |
3625 | { | |
3626 | /* We need a PT_GNU_STACK segment. */ | |
3627 | ++segs; | |
3628 | } | |
3629 | ||
3630 | if (elf_tdata (abfd)->relro) | |
3631 | { | |
3632 | /* We need a PT_GNU_RELRO segment. */ | |
3633 | ++segs; | |
3634 | } | |
3635 | ||
3636 | for (s = abfd->sections; s != NULL; s = s->next) | |
3637 | { | |
3638 | if ((s->flags & SEC_LOAD) != 0 | |
3639 | && strncmp (s->name, ".note", 5) == 0) | |
3640 | { | |
3641 | /* We need a PT_NOTE segment. */ | |
3642 | ++segs; | |
3643 | } | |
3644 | } | |
3645 | ||
3646 | for (s = abfd->sections; s != NULL; s = s->next) | |
3647 | { | |
3648 | if (s->flags & SEC_THREAD_LOCAL) | |
3649 | { | |
3650 | /* We need a PT_TLS segment. */ | |
3651 | ++segs; | |
3652 | break; | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | /* Let the backend count up any program headers it might need. */ | |
3657 | bed = get_elf_backend_data (abfd); | |
3658 | if (bed->elf_backend_additional_program_headers) | |
3659 | { | |
3660 | int a; | |
3661 | ||
3662 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3663 | if (a == -1) | |
3664 | abort (); | |
3665 | segs += a; | |
3666 | } | |
3667 | ||
3668 | return segs * bed->s->sizeof_phdr; | |
3669 | } | |
3670 | ||
252b5132 RH |
3671 | /* Create a mapping from a set of sections to a program segment. */ |
3672 | ||
217aa764 AM |
3673 | static struct elf_segment_map * |
3674 | make_mapping (bfd *abfd, | |
3675 | asection **sections, | |
3676 | unsigned int from, | |
3677 | unsigned int to, | |
3678 | bfd_boolean phdr) | |
252b5132 RH |
3679 | { |
3680 | struct elf_segment_map *m; | |
3681 | unsigned int i; | |
3682 | asection **hdrpp; | |
dc810e39 | 3683 | bfd_size_type amt; |
252b5132 | 3684 | |
dc810e39 AM |
3685 | amt = sizeof (struct elf_segment_map); |
3686 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3687 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3688 | if (m == NULL) |
3689 | return NULL; | |
3690 | m->next = NULL; | |
3691 | m->p_type = PT_LOAD; | |
3692 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3693 | m->sections[i - from] = *hdrpp; | |
3694 | m->count = to - from; | |
3695 | ||
3696 | if (from == 0 && phdr) | |
3697 | { | |
3698 | /* Include the headers in the first PT_LOAD segment. */ | |
3699 | m->includes_filehdr = 1; | |
3700 | m->includes_phdrs = 1; | |
3701 | } | |
3702 | ||
3703 | return m; | |
3704 | } | |
3705 | ||
229fcec5 MM |
3706 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3707 | on failure. */ | |
3708 | ||
3709 | struct elf_segment_map * | |
3710 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3711 | { | |
3712 | struct elf_segment_map *m; | |
3713 | ||
3714 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3715 | if (m == NULL) | |
3716 | return NULL; | |
3717 | m->next = NULL; | |
3718 | m->p_type = PT_DYNAMIC; | |
3719 | m->count = 1; | |
3720 | m->sections[0] = dynsec; | |
3721 | ||
3722 | return m; | |
3723 | } | |
3724 | ||
8ded5a0f | 3725 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3726 | |
b34976b6 | 3727 | static bfd_boolean |
8ded5a0f | 3728 | elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3729 | { |
252b5132 | 3730 | struct elf_segment_map *m; |
8ded5a0f | 3731 | const struct elf_backend_data *bed; |
252b5132 | 3732 | |
8ded5a0f AM |
3733 | /* The placement algorithm assumes that non allocated sections are |
3734 | not in PT_LOAD segments. We ensure this here by removing such | |
3735 | sections from the segment map. We also remove excluded | |
3736 | sections. */ | |
3737 | for (m = elf_tdata (abfd)->segment_map; | |
3738 | m != NULL; | |
3739 | m = m->next) | |
3740 | { | |
3741 | unsigned int i, new_count; | |
252b5132 | 3742 | |
8ded5a0f AM |
3743 | new_count = 0; |
3744 | for (i = 0; i < m->count; i ++) | |
3745 | { | |
3746 | if ((m->sections[i]->flags & SEC_EXCLUDE) == 0 | |
3747 | && ((m->sections[i]->flags & SEC_ALLOC) != 0 | |
3748 | || m->p_type != PT_LOAD)) | |
3749 | { | |
3750 | if (i != new_count) | |
3751 | m->sections[new_count] = m->sections[i]; | |
252b5132 | 3752 | |
8ded5a0f AM |
3753 | new_count ++; |
3754 | } | |
3755 | } | |
252b5132 | 3756 | |
8ded5a0f AM |
3757 | if (new_count != m->count) |
3758 | m->count = new_count; | |
3759 | } | |
252b5132 | 3760 | |
8ded5a0f AM |
3761 | bed = get_elf_backend_data (abfd); |
3762 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3763 | { |
8ded5a0f AM |
3764 | if (! (*bed->elf_backend_modify_segment_map) (abfd, info)) |
3765 | return FALSE; | |
252b5132 | 3766 | } |
252b5132 | 3767 | |
8ded5a0f AM |
3768 | return TRUE; |
3769 | } | |
252b5132 | 3770 | |
8ded5a0f | 3771 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3772 | |
8ded5a0f AM |
3773 | bfd_boolean |
3774 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3775 | { | |
3776 | unsigned int count; | |
3777 | struct elf_segment_map *m; | |
3778 | asection **sections = NULL; | |
3779 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 3780 | |
8ded5a0f AM |
3781 | if (elf_tdata (abfd)->segment_map == NULL |
3782 | && bfd_count_sections (abfd) != 0) | |
252b5132 | 3783 | { |
8ded5a0f AM |
3784 | asection *s; |
3785 | unsigned int i; | |
3786 | struct elf_segment_map *mfirst; | |
3787 | struct elf_segment_map **pm; | |
3788 | asection *last_hdr; | |
3789 | bfd_vma last_size; | |
3790 | unsigned int phdr_index; | |
3791 | bfd_vma maxpagesize; | |
3792 | asection **hdrpp; | |
3793 | bfd_boolean phdr_in_segment = TRUE; | |
3794 | bfd_boolean writable; | |
3795 | int tls_count = 0; | |
3796 | asection *first_tls = NULL; | |
3797 | asection *dynsec, *eh_frame_hdr; | |
3798 | bfd_size_type amt; | |
252b5132 | 3799 | |
8ded5a0f | 3800 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3801 | |
8ded5a0f AM |
3802 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3803 | if (sections == NULL) | |
252b5132 | 3804 | goto error_return; |
252b5132 | 3805 | |
8ded5a0f AM |
3806 | i = 0; |
3807 | for (s = abfd->sections; s != NULL; s = s->next) | |
3808 | { | |
3809 | if ((s->flags & SEC_ALLOC) != 0) | |
3810 | { | |
3811 | sections[i] = s; | |
3812 | ++i; | |
3813 | } | |
3814 | } | |
3815 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3816 | count = i; | |
252b5132 | 3817 | |
8ded5a0f | 3818 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3819 | |
8ded5a0f | 3820 | /* Build the mapping. */ |
252b5132 | 3821 | |
8ded5a0f AM |
3822 | mfirst = NULL; |
3823 | pm = &mfirst; | |
252b5132 | 3824 | |
8ded5a0f AM |
3825 | /* If we have a .interp section, then create a PT_PHDR segment for |
3826 | the program headers and a PT_INTERP segment for the .interp | |
3827 | section. */ | |
3828 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3829 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3830 | { | |
3831 | amt = sizeof (struct elf_segment_map); | |
3832 | m = bfd_zalloc (abfd, amt); | |
3833 | if (m == NULL) | |
3834 | goto error_return; | |
3835 | m->next = NULL; | |
3836 | m->p_type = PT_PHDR; | |
3837 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3838 | m->p_flags = PF_R | PF_X; | |
3839 | m->p_flags_valid = 1; | |
3840 | m->includes_phdrs = 1; | |
252b5132 | 3841 | |
8ded5a0f AM |
3842 | *pm = m; |
3843 | pm = &m->next; | |
252b5132 | 3844 | |
8ded5a0f AM |
3845 | amt = sizeof (struct elf_segment_map); |
3846 | m = bfd_zalloc (abfd, amt); | |
3847 | if (m == NULL) | |
3848 | goto error_return; | |
3849 | m->next = NULL; | |
3850 | m->p_type = PT_INTERP; | |
3851 | m->count = 1; | |
3852 | m->sections[0] = s; | |
3853 | ||
3854 | *pm = m; | |
3855 | pm = &m->next; | |
252b5132 | 3856 | } |
8ded5a0f AM |
3857 | |
3858 | /* Look through the sections. We put sections in the same program | |
3859 | segment when the start of the second section can be placed within | |
3860 | a few bytes of the end of the first section. */ | |
3861 | last_hdr = NULL; | |
3862 | last_size = 0; | |
3863 | phdr_index = 0; | |
3864 | maxpagesize = bed->maxpagesize; | |
3865 | writable = FALSE; | |
3866 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3867 | if (dynsec != NULL | |
3868 | && (dynsec->flags & SEC_LOAD) == 0) | |
3869 | dynsec = NULL; | |
3870 | ||
3871 | /* Deal with -Ttext or something similar such that the first section | |
3872 | is not adjacent to the program headers. This is an | |
3873 | approximation, since at this point we don't know exactly how many | |
3874 | program headers we will need. */ | |
3875 | if (count > 0) | |
252b5132 | 3876 | { |
8ded5a0f AM |
3877 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3878 | ||
62d7a5f6 | 3879 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3880 | phdr_size = get_program_header_size (abfd, info); |
3881 | if ((abfd->flags & D_PAGED) == 0 | |
3882 | || sections[0]->lma < phdr_size | |
3883 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3884 | phdr_in_segment = FALSE; | |
252b5132 RH |
3885 | } |
3886 | ||
8ded5a0f | 3887 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3888 | { |
8ded5a0f AM |
3889 | asection *hdr; |
3890 | bfd_boolean new_segment; | |
3891 | ||
3892 | hdr = *hdrpp; | |
3893 | ||
3894 | /* See if this section and the last one will fit in the same | |
3895 | segment. */ | |
3896 | ||
3897 | if (last_hdr == NULL) | |
3898 | { | |
3899 | /* If we don't have a segment yet, then we don't need a new | |
3900 | one (we build the last one after this loop). */ | |
3901 | new_segment = FALSE; | |
3902 | } | |
3903 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3904 | { | |
3905 | /* If this section has a different relation between the | |
3906 | virtual address and the load address, then we need a new | |
3907 | segment. */ | |
3908 | new_segment = TRUE; | |
3909 | } | |
3910 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3911 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3912 | { | |
3913 | /* If putting this section in this segment would force us to | |
3914 | skip a page in the segment, then we need a new segment. */ | |
3915 | new_segment = TRUE; | |
3916 | } | |
3917 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3918 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3919 | { | |
3920 | /* We don't want to put a loadable section after a | |
3921 | nonloadable section in the same segment. | |
3922 | Consider .tbss sections as loadable for this purpose. */ | |
3923 | new_segment = TRUE; | |
3924 | } | |
3925 | else if ((abfd->flags & D_PAGED) == 0) | |
3926 | { | |
3927 | /* If the file is not demand paged, which means that we | |
3928 | don't require the sections to be correctly aligned in the | |
3929 | file, then there is no other reason for a new segment. */ | |
3930 | new_segment = FALSE; | |
3931 | } | |
3932 | else if (! writable | |
3933 | && (hdr->flags & SEC_READONLY) == 0 | |
3934 | && (((last_hdr->lma + last_size - 1) | |
3935 | & ~(maxpagesize - 1)) | |
3936 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3937 | { | |
3938 | /* We don't want to put a writable section in a read only | |
3939 | segment, unless they are on the same page in memory | |
3940 | anyhow. We already know that the last section does not | |
3941 | bring us past the current section on the page, so the | |
3942 | only case in which the new section is not on the same | |
3943 | page as the previous section is when the previous section | |
3944 | ends precisely on a page boundary. */ | |
3945 | new_segment = TRUE; | |
3946 | } | |
3947 | else | |
3948 | { | |
3949 | /* Otherwise, we can use the same segment. */ | |
3950 | new_segment = FALSE; | |
3951 | } | |
3952 | ||
3953 | if (! new_segment) | |
3954 | { | |
3955 | if ((hdr->flags & SEC_READONLY) == 0) | |
3956 | writable = TRUE; | |
3957 | last_hdr = hdr; | |
3958 | /* .tbss sections effectively have zero size. */ | |
3959 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3960 | != SEC_THREAD_LOCAL) | |
3961 | last_size = hdr->size; | |
3962 | else | |
3963 | last_size = 0; | |
3964 | continue; | |
3965 | } | |
3966 | ||
3967 | /* We need a new program segment. We must create a new program | |
3968 | header holding all the sections from phdr_index until hdr. */ | |
3969 | ||
3970 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3971 | if (m == NULL) | |
3972 | goto error_return; | |
3973 | ||
3974 | *pm = m; | |
3975 | pm = &m->next; | |
3976 | ||
252b5132 | 3977 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3978 | writable = TRUE; |
8ded5a0f AM |
3979 | else |
3980 | writable = FALSE; | |
3981 | ||
baaff79e JJ |
3982 | last_hdr = hdr; |
3983 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3984 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3985 | last_size = hdr->size; |
baaff79e JJ |
3986 | else |
3987 | last_size = 0; | |
8ded5a0f AM |
3988 | phdr_index = i; |
3989 | phdr_in_segment = FALSE; | |
252b5132 RH |
3990 | } |
3991 | ||
8ded5a0f AM |
3992 | /* Create a final PT_LOAD program segment. */ |
3993 | if (last_hdr != NULL) | |
3994 | { | |
3995 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3996 | if (m == NULL) | |
3997 | goto error_return; | |
252b5132 | 3998 | |
8ded5a0f AM |
3999 | *pm = m; |
4000 | pm = &m->next; | |
4001 | } | |
252b5132 | 4002 | |
8ded5a0f AM |
4003 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
4004 | if (dynsec != NULL) | |
4005 | { | |
4006 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
4007 | if (m == NULL) | |
4008 | goto error_return; | |
4009 | *pm = m; | |
4010 | pm = &m->next; | |
4011 | } | |
252b5132 | 4012 | |
8ded5a0f AM |
4013 | /* For each loadable .note section, add a PT_NOTE segment. We don't |
4014 | use bfd_get_section_by_name, because if we link together | |
4015 | nonloadable .note sections and loadable .note sections, we will | |
4016 | generate two .note sections in the output file. FIXME: Using | |
4017 | names for section types is bogus anyhow. */ | |
4018 | for (s = abfd->sections; s != NULL; s = s->next) | |
4019 | { | |
4020 | if ((s->flags & SEC_LOAD) != 0 | |
4021 | && strncmp (s->name, ".note", 5) == 0) | |
4022 | { | |
4023 | amt = sizeof (struct elf_segment_map); | |
4024 | m = bfd_zalloc (abfd, amt); | |
4025 | if (m == NULL) | |
4026 | goto error_return; | |
4027 | m->next = NULL; | |
4028 | m->p_type = PT_NOTE; | |
4029 | m->count = 1; | |
4030 | m->sections[0] = s; | |
252b5132 | 4031 | |
8ded5a0f AM |
4032 | *pm = m; |
4033 | pm = &m->next; | |
4034 | } | |
4035 | if (s->flags & SEC_THREAD_LOCAL) | |
4036 | { | |
4037 | if (! tls_count) | |
4038 | first_tls = s; | |
4039 | tls_count++; | |
4040 | } | |
4041 | } | |
252b5132 | 4042 | |
8ded5a0f AM |
4043 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
4044 | if (tls_count > 0) | |
4045 | { | |
4046 | int i; | |
252b5132 | 4047 | |
8ded5a0f AM |
4048 | amt = sizeof (struct elf_segment_map); |
4049 | amt += (tls_count - 1) * sizeof (asection *); | |
4050 | m = bfd_zalloc (abfd, amt); | |
4051 | if (m == NULL) | |
4052 | goto error_return; | |
4053 | m->next = NULL; | |
4054 | m->p_type = PT_TLS; | |
4055 | m->count = tls_count; | |
4056 | /* Mandated PF_R. */ | |
4057 | m->p_flags = PF_R; | |
4058 | m->p_flags_valid = 1; | |
4059 | for (i = 0; i < tls_count; ++i) | |
4060 | { | |
4061 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
4062 | m->sections[i] = first_tls; | |
4063 | first_tls = first_tls->next; | |
4064 | } | |
252b5132 | 4065 | |
8ded5a0f AM |
4066 | *pm = m; |
4067 | pm = &m->next; | |
4068 | } | |
252b5132 | 4069 | |
8ded5a0f AM |
4070 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
4071 | segment. */ | |
4072 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
4073 | if (eh_frame_hdr != NULL | |
4074 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 4075 | { |
dc810e39 | 4076 | amt = sizeof (struct elf_segment_map); |
217aa764 | 4077 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
4078 | if (m == NULL) |
4079 | goto error_return; | |
4080 | m->next = NULL; | |
8ded5a0f | 4081 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 4082 | m->count = 1; |
8ded5a0f | 4083 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
4084 | |
4085 | *pm = m; | |
4086 | pm = &m->next; | |
4087 | } | |
13ae64f3 | 4088 | |
8ded5a0f | 4089 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 4090 | { |
8ded5a0f AM |
4091 | amt = sizeof (struct elf_segment_map); |
4092 | m = bfd_zalloc (abfd, amt); | |
4093 | if (m == NULL) | |
4094 | goto error_return; | |
4095 | m->next = NULL; | |
4096 | m->p_type = PT_GNU_STACK; | |
4097 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
4098 | m->p_flags_valid = 1; | |
252b5132 | 4099 | |
8ded5a0f AM |
4100 | *pm = m; |
4101 | pm = &m->next; | |
4102 | } | |
65765700 | 4103 | |
8ded5a0f AM |
4104 | if (elf_tdata (abfd)->relro) |
4105 | { | |
4106 | amt = sizeof (struct elf_segment_map); | |
4107 | m = bfd_zalloc (abfd, amt); | |
4108 | if (m == NULL) | |
4109 | goto error_return; | |
4110 | m->next = NULL; | |
4111 | m->p_type = PT_GNU_RELRO; | |
4112 | m->p_flags = PF_R; | |
4113 | m->p_flags_valid = 1; | |
65765700 | 4114 | |
8ded5a0f AM |
4115 | *pm = m; |
4116 | pm = &m->next; | |
4117 | } | |
9ee5e499 | 4118 | |
8ded5a0f AM |
4119 | free (sections); |
4120 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
4121 | } |
4122 | ||
8ded5a0f AM |
4123 | if (!elf_modify_segment_map (abfd, info)) |
4124 | return FALSE; | |
8c37241b | 4125 | |
8ded5a0f AM |
4126 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
4127 | ++count; | |
4128 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 4129 | |
b34976b6 | 4130 | return TRUE; |
252b5132 RH |
4131 | |
4132 | error_return: | |
4133 | if (sections != NULL) | |
4134 | free (sections); | |
b34976b6 | 4135 | return FALSE; |
252b5132 RH |
4136 | } |
4137 | ||
4138 | /* Sort sections by address. */ | |
4139 | ||
4140 | static int | |
217aa764 | 4141 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
4142 | { |
4143 | const asection *sec1 = *(const asection **) arg1; | |
4144 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 4145 | bfd_size_type size1, size2; |
252b5132 RH |
4146 | |
4147 | /* Sort by LMA first, since this is the address used to | |
4148 | place the section into a segment. */ | |
4149 | if (sec1->lma < sec2->lma) | |
4150 | return -1; | |
4151 | else if (sec1->lma > sec2->lma) | |
4152 | return 1; | |
4153 | ||
4154 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
4155 | the same, and this will do nothing. */ | |
4156 | if (sec1->vma < sec2->vma) | |
4157 | return -1; | |
4158 | else if (sec1->vma > sec2->vma) | |
4159 | return 1; | |
4160 | ||
4161 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
4162 | ||
07c6e936 | 4163 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
4164 | |
4165 | if (TOEND (sec1)) | |
4166 | { | |
4167 | if (TOEND (sec2)) | |
00a7cdc5 NC |
4168 | { |
4169 | /* If the indicies are the same, do not return 0 | |
4170 | here, but continue to try the next comparison. */ | |
4171 | if (sec1->target_index - sec2->target_index != 0) | |
4172 | return sec1->target_index - sec2->target_index; | |
4173 | } | |
252b5132 RH |
4174 | else |
4175 | return 1; | |
4176 | } | |
00a7cdc5 | 4177 | else if (TOEND (sec2)) |
252b5132 RH |
4178 | return -1; |
4179 | ||
4180 | #undef TOEND | |
4181 | ||
00a7cdc5 NC |
4182 | /* Sort by size, to put zero sized sections |
4183 | before others at the same address. */ | |
252b5132 | 4184 | |
eea6121a AM |
4185 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
4186 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
4187 | |
4188 | if (size1 < size2) | |
252b5132 | 4189 | return -1; |
eecdbe52 | 4190 | if (size1 > size2) |
252b5132 RH |
4191 | return 1; |
4192 | ||
4193 | return sec1->target_index - sec2->target_index; | |
4194 | } | |
4195 | ||
340b6d91 AC |
4196 | /* Ian Lance Taylor writes: |
4197 | ||
4198 | We shouldn't be using % with a negative signed number. That's just | |
4199 | not good. We have to make sure either that the number is not | |
4200 | negative, or that the number has an unsigned type. When the types | |
4201 | are all the same size they wind up as unsigned. When file_ptr is a | |
4202 | larger signed type, the arithmetic winds up as signed long long, | |
4203 | which is wrong. | |
4204 | ||
4205 | What we're trying to say here is something like ``increase OFF by | |
4206 | the least amount that will cause it to be equal to the VMA modulo | |
4207 | the page size.'' */ | |
4208 | /* In other words, something like: | |
4209 | ||
4210 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4211 | off_offset = off % bed->maxpagesize; | |
4212 | if (vma_offset < off_offset) | |
4213 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4214 | else | |
4215 | adjustment = vma_offset - off_offset; | |
4216 | ||
4217 | which can can be collapsed into the expression below. */ | |
4218 | ||
4219 | static file_ptr | |
4220 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4221 | { | |
4222 | return ((vma - off) % maxpagesize); | |
4223 | } | |
4224 | ||
252b5132 RH |
4225 | /* Assign file positions to the sections based on the mapping from |
4226 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4227 | the file header. */ |
252b5132 | 4228 | |
b34976b6 | 4229 | static bfd_boolean |
f3520d2f AM |
4230 | assign_file_positions_for_load_sections (bfd *abfd, |
4231 | struct bfd_link_info *link_info) | |
252b5132 RH |
4232 | { |
4233 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4234 | struct elf_segment_map *m; |
252b5132 | 4235 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4236 | Elf_Internal_Phdr *p; |
f3520d2f | 4237 | file_ptr off, voff; |
3f570048 | 4238 | bfd_size_type maxpagesize; |
f3520d2f | 4239 | unsigned int alloc; |
5c182d5f | 4240 | unsigned int i; |
252b5132 | 4241 | |
e36284ab AM |
4242 | if (link_info == NULL |
4243 | && !elf_modify_segment_map (abfd, link_info)) | |
8ded5a0f | 4244 | return FALSE; |
252b5132 | 4245 | |
8ded5a0f | 4246 | alloc = 0; |
252b5132 | 4247 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4248 | ++alloc; |
252b5132 RH |
4249 | |
4250 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4251 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4252 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4253 | |
62d7a5f6 | 4254 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4255 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4256 | else | |
4257 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
4258 | == alloc * bed->s->sizeof_phdr); | |
252b5132 RH |
4259 | |
4260 | if (alloc == 0) | |
f3520d2f | 4261 | { |
8ded5a0f AM |
4262 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4263 | return TRUE; | |
f3520d2f | 4264 | } |
252b5132 | 4265 | |
d0fb9a8d | 4266 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4267 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4268 | if (phdrs == NULL) |
b34976b6 | 4269 | return FALSE; |
252b5132 | 4270 | |
3f570048 AM |
4271 | maxpagesize = 1; |
4272 | if ((abfd->flags & D_PAGED) != 0) | |
4273 | maxpagesize = bed->maxpagesize; | |
4274 | ||
252b5132 RH |
4275 | off = bed->s->sizeof_ehdr; |
4276 | off += alloc * bed->s->sizeof_phdr; | |
4277 | ||
252b5132 RH |
4278 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4279 | m != NULL; | |
4280 | m = m->next, p++) | |
4281 | { | |
252b5132 RH |
4282 | asection **secpp; |
4283 | ||
4284 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4285 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4286 | not be done to the PT_NOTE section of a corefile, which may |
4287 | contain several pseudo-sections artificially created by bfd. | |
4288 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4289 | if (m->count > 1 |
4290 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4291 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4292 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4293 | elf_sort_sections); | |
4294 | ||
b301b248 AM |
4295 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4296 | number of sections with contents contributing to both p_filesz | |
4297 | and p_memsz, followed by a number of sections with no contents | |
4298 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4299 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4300 | an adjustment we use for segments that have no file contents | |
4301 | but need zero filled memory allocation. */ | |
4302 | voff = 0; | |
252b5132 | 4303 | p->p_type = m->p_type; |
28a7f3e7 | 4304 | p->p_flags = m->p_flags; |
252b5132 | 4305 | |
3f570048 AM |
4306 | if (m->count == 0) |
4307 | p->p_vaddr = 0; | |
4308 | else | |
4309 | p->p_vaddr = m->sections[0]->vma; | |
4310 | ||
4311 | if (m->p_paddr_valid) | |
4312 | p->p_paddr = m->p_paddr; | |
4313 | else if (m->count == 0) | |
4314 | p->p_paddr = 0; | |
4315 | else | |
4316 | p->p_paddr = m->sections[0]->lma; | |
4317 | ||
4318 | if (p->p_type == PT_LOAD | |
4319 | && (abfd->flags & D_PAGED) != 0) | |
4320 | { | |
4321 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4322 | the maximum page size. When copying an executable with | |
4323 | objcopy, we set m->p_align from the input file. Use this | |
4324 | value for maxpagesize rather than bed->maxpagesize, which | |
4325 | may be different. Note that we use maxpagesize for PT_TLS | |
4326 | segment alignment later in this function, so we are relying | |
4327 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4328 | segment. */ | |
4329 | if (m->p_align_valid) | |
4330 | maxpagesize = m->p_align; | |
4331 | ||
4332 | p->p_align = maxpagesize; | |
4333 | } | |
4334 | else if (m->count == 0) | |
4335 | p->p_align = 1 << bed->s->log_file_align; | |
4336 | else | |
4337 | p->p_align = 0; | |
4338 | ||
252b5132 | 4339 | if (p->p_type == PT_LOAD |
b301b248 | 4340 | && m->count > 0) |
252b5132 | 4341 | { |
b301b248 AM |
4342 | bfd_size_type align; |
4343 | bfd_vma adjust; | |
a49e53ed | 4344 | unsigned int align_power = 0; |
b301b248 | 4345 | |
a49e53ed | 4346 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
252b5132 | 4347 | { |
a49e53ed | 4348 | unsigned int secalign; |
252b5132 | 4349 | |
a49e53ed AM |
4350 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4351 | if (secalign > align_power) | |
4352 | align_power = secalign; | |
b301b248 | 4353 | } |
a49e53ed AM |
4354 | align = (bfd_size_type) 1 << align_power; |
4355 | ||
3f570048 AM |
4356 | if (align < maxpagesize) |
4357 | align = maxpagesize; | |
252b5132 | 4358 | |
b301b248 AM |
4359 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4360 | off += adjust; | |
4361 | if (adjust != 0 | |
4362 | && !m->includes_filehdr | |
4363 | && !m->includes_phdrs | |
4364 | && (ufile_ptr) off >= align) | |
4365 | { | |
4366 | /* If the first section isn't loadable, the same holds for | |
4367 | any other sections. Since the segment won't need file | |
4368 | space, we can make p_offset overlap some prior segment. | |
4369 | However, .tbss is special. If a segment starts with | |
4370 | .tbss, we need to look at the next section to decide | |
4371 | whether the segment has any loadable sections. */ | |
4372 | i = 0; | |
5efb6261 | 4373 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4374 | { |
4375 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4376 | || ++i >= m->count) | |
4377 | { | |
4378 | off -= adjust; | |
4379 | voff = adjust - align; | |
4380 | break; | |
4381 | } | |
4382 | } | |
252b5132 RH |
4383 | } |
4384 | } | |
b1a6d0b1 NC |
4385 | /* Make sure the .dynamic section is the first section in the |
4386 | PT_DYNAMIC segment. */ | |
4387 | else if (p->p_type == PT_DYNAMIC | |
4388 | && m->count > 1 | |
4389 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4390 | { | |
4391 | _bfd_error_handler | |
b301b248 AM |
4392 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4393 | abfd); | |
b1a6d0b1 NC |
4394 | bfd_set_error (bfd_error_bad_value); |
4395 | return FALSE; | |
4396 | } | |
252b5132 | 4397 | |
252b5132 RH |
4398 | p->p_offset = 0; |
4399 | p->p_filesz = 0; | |
4400 | p->p_memsz = 0; | |
4401 | ||
4402 | if (m->includes_filehdr) | |
4403 | { | |
4404 | if (! m->p_flags_valid) | |
4405 | p->p_flags |= PF_R; | |
4406 | p->p_offset = 0; | |
4407 | p->p_filesz = bed->s->sizeof_ehdr; | |
4408 | p->p_memsz = bed->s->sizeof_ehdr; | |
4409 | if (m->count > 0) | |
4410 | { | |
4411 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4412 | ||
4413 | if (p->p_vaddr < (bfd_vma) off) | |
4414 | { | |
caf47ea6 | 4415 | (*_bfd_error_handler) |
b301b248 AM |
4416 | (_("%B: Not enough room for program headers, try linking with -N"), |
4417 | abfd); | |
252b5132 | 4418 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4419 | return FALSE; |
252b5132 RH |
4420 | } |
4421 | ||
4422 | p->p_vaddr -= off; | |
4423 | if (! m->p_paddr_valid) | |
4424 | p->p_paddr -= off; | |
4425 | } | |
252b5132 RH |
4426 | } |
4427 | ||
4428 | if (m->includes_phdrs) | |
4429 | { | |
4430 | if (! m->p_flags_valid) | |
4431 | p->p_flags |= PF_R; | |
4432 | ||
f3520d2f | 4433 | if (!m->includes_filehdr) |
252b5132 RH |
4434 | { |
4435 | p->p_offset = bed->s->sizeof_ehdr; | |
4436 | ||
4437 | if (m->count > 0) | |
4438 | { | |
4439 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4440 | p->p_vaddr -= off - p->p_offset; | |
4441 | if (! m->p_paddr_valid) | |
4442 | p->p_paddr -= off - p->p_offset; | |
4443 | } | |
252b5132 RH |
4444 | } |
4445 | ||
4446 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4447 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4448 | } | |
4449 | ||
4450 | if (p->p_type == PT_LOAD | |
4451 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4452 | { | |
4453 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4454 | p->p_offset = off + voff; |
252b5132 RH |
4455 | else |
4456 | { | |
4457 | file_ptr adjust; | |
4458 | ||
4459 | adjust = off - (p->p_offset + p->p_filesz); | |
4460 | p->p_filesz += adjust; | |
4461 | p->p_memsz += adjust; | |
4462 | } | |
4463 | } | |
4464 | ||
1ea63fd2 AM |
4465 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4466 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4467 | core files, for sections in PT_NOTE segments. | |
4468 | assign_file_positions_for_non_load_sections will set filepos | |
4469 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4470 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4471 | { | |
4472 | asection *sec; | |
4473 | flagword flags; | |
4474 | bfd_size_type align; | |
4475 | ||
4476 | sec = *secpp; | |
4477 | flags = sec->flags; | |
3f570048 | 4478 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4479 | |
b301b248 AM |
4480 | if (p->p_type == PT_LOAD |
4481 | || p->p_type == PT_TLS) | |
252b5132 RH |
4482 | { |
4483 | bfd_signed_vma adjust; | |
4484 | ||
5efb6261 | 4485 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4486 | { |
b301b248 | 4487 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4488 | if (adjust < 0) |
b301b248 AM |
4489 | { |
4490 | (*_bfd_error_handler) | |
4491 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4492 | abfd, sec, (unsigned long) sec->lma); | |
4493 | adjust = 0; | |
4494 | } | |
4495 | off += adjust; | |
4496 | p->p_filesz += adjust; | |
4497 | p->p_memsz += adjust; | |
252b5132 | 4498 | } |
b301b248 AM |
4499 | /* .tbss is special. It doesn't contribute to p_memsz of |
4500 | normal segments. */ | |
1ea63fd2 AM |
4501 | else if ((flags & SEC_ALLOC) != 0 |
4502 | && ((flags & SEC_THREAD_LOCAL) == 0 | |
4503 | || p->p_type == PT_TLS)) | |
252b5132 RH |
4504 | { |
4505 | /* The section VMA must equal the file position | |
b301b248 AM |
4506 | modulo the page size. */ |
4507 | bfd_size_type page = align; | |
3f570048 AM |
4508 | if (page < maxpagesize) |
4509 | page = maxpagesize; | |
b301b248 AM |
4510 | adjust = vma_page_aligned_bias (sec->vma, |
4511 | p->p_vaddr + p->p_memsz, | |
4512 | page); | |
252b5132 | 4513 | p->p_memsz += adjust; |
252b5132 | 4514 | } |
252b5132 RH |
4515 | } |
4516 | ||
4517 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4518 | { | |
b301b248 AM |
4519 | /* The section at i == 0 is the one that actually contains |
4520 | everything. */ | |
4a938328 MS |
4521 | if (i == 0) |
4522 | { | |
252b5132 | 4523 | sec->filepos = off; |
eea6121a | 4524 | off += sec->size; |
b301b248 AM |
4525 | p->p_filesz = sec->size; |
4526 | p->p_memsz = 0; | |
4527 | p->p_align = 1; | |
252b5132 | 4528 | } |
4a938328 | 4529 | else |
252b5132 | 4530 | { |
b301b248 | 4531 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4532 | sec->filepos = 0; |
eea6121a | 4533 | sec->size = 0; |
b301b248 AM |
4534 | sec->flags = 0; |
4535 | continue; | |
252b5132 | 4536 | } |
252b5132 RH |
4537 | } |
4538 | else | |
4539 | { | |
b301b248 AM |
4540 | if (p->p_type == PT_LOAD) |
4541 | { | |
4542 | sec->filepos = off; | |
5efb6261 AM |
4543 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4544 | 1997, and the exact reason for it isn't clear. One | |
4545 | plausible explanation is that it is to work around | |
4546 | a problem we have with linker scripts using data | |
4547 | statements in NOLOAD sections. I don't think it | |
4548 | makes a great deal of sense to have such a section | |
4549 | assigned to a PT_LOAD segment, but apparently | |
4550 | people do this. The data statement results in a | |
4551 | bfd_data_link_order being built, and these need | |
4552 | section contents to write into. Eventually, we get | |
4553 | to _bfd_elf_write_object_contents which writes any | |
4554 | section with contents to the output. Make room | |
4555 | here for the write, so that following segments are | |
4556 | not trashed. */ | |
4557 | if ((flags & SEC_LOAD) != 0 | |
4558 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4559 | off += sec->size; |
4560 | } | |
252b5132 | 4561 | |
5efb6261 | 4562 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4563 | { |
4564 | p->p_filesz += sec->size; | |
4565 | p->p_memsz += sec->size; | |
4566 | } | |
4b6c0f2f | 4567 | |
b301b248 AM |
4568 | /* .tbss is special. It doesn't contribute to p_memsz of |
4569 | normal segments. */ | |
1ea63fd2 AM |
4570 | else if ((flags & SEC_ALLOC) != 0 |
4571 | && ((flags & SEC_THREAD_LOCAL) == 0 | |
4572 | || p->p_type == PT_TLS)) | |
b301b248 | 4573 | p->p_memsz += sec->size; |
252b5132 | 4574 | |
13ae64f3 | 4575 | if (p->p_type == PT_TLS |
eea6121a | 4576 | && sec->size == 0 |
13ae64f3 JJ |
4577 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4578 | { | |
3a800eb9 AM |
4579 | struct bfd_link_order *o = sec->map_tail.link_order; |
4580 | if (o != NULL) | |
4581 | p->p_memsz += o->offset + o->size; | |
13ae64f3 JJ |
4582 | } |
4583 | ||
252b5132 | 4584 | if (align > p->p_align |
1ea63fd2 | 4585 | && (p->p_type != PT_LOAD |
3f570048 | 4586 | || (abfd->flags & D_PAGED) == 0)) |
252b5132 RH |
4587 | p->p_align = align; |
4588 | } | |
4589 | ||
4590 | if (! m->p_flags_valid) | |
4591 | { | |
4592 | p->p_flags |= PF_R; | |
4593 | if ((flags & SEC_CODE) != 0) | |
4594 | p->p_flags |= PF_X; | |
4595 | if ((flags & SEC_READONLY) == 0) | |
4596 | p->p_flags |= PF_W; | |
4597 | } | |
4598 | } | |
4599 | } | |
4600 | ||
f3520d2f AM |
4601 | elf_tdata (abfd)->next_file_pos = off; |
4602 | return TRUE; | |
4603 | } | |
4604 | ||
4605 | /* Assign file positions for the other sections. */ | |
4606 | ||
4607 | static bfd_boolean | |
4608 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4609 | struct bfd_link_info *link_info) | |
4610 | { | |
4611 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4612 | Elf_Internal_Shdr **i_shdrpp; | |
4613 | Elf_Internal_Shdr **hdrpp; | |
4614 | Elf_Internal_Phdr *phdrs; | |
4615 | Elf_Internal_Phdr *p; | |
4616 | struct elf_segment_map *m; | |
4617 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4618 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4619 | file_ptr off; | |
4620 | unsigned int num_sec; | |
4621 | unsigned int i; | |
4622 | unsigned int count; | |
4623 | ||
5c182d5f AM |
4624 | i_shdrpp = elf_elfsections (abfd); |
4625 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4626 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4627 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4628 | { | |
4629 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4630 | Elf_Internal_Shdr *hdr; | |
4631 | ||
4632 | hdr = *hdrpp; | |
4633 | if (hdr->bfd_section != NULL | |
4634 | && hdr->bfd_section->filepos != 0) | |
4635 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4636 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4637 | { | |
4638 | ((*_bfd_error_handler) | |
4639 | (_("%B: warning: allocated section `%s' not in segment"), | |
4640 | abfd, | |
4641 | (hdr->bfd_section == NULL | |
4642 | ? "*unknown*" | |
4643 | : hdr->bfd_section->name))); | |
4644 | if ((abfd->flags & D_PAGED) != 0) | |
4645 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4646 | bed->maxpagesize); | |
4647 | else | |
4648 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4649 | hdr->sh_addralign); | |
4650 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4651 | FALSE); | |
4652 | } | |
4653 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4654 | && hdr->bfd_section == NULL) | |
4655 | || hdr == i_shdrpp[tdata->symtab_section] | |
4656 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4657 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4658 | hdr->sh_offset = -1; | |
4659 | else | |
4660 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4661 | ||
4662 | if (i == SHN_LORESERVE - 1) | |
4663 | { | |
4664 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4665 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4666 | } | |
4667 | } | |
4668 | ||
252b5132 RH |
4669 | /* Now that we have set the section file positions, we can set up |
4670 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4671 | count = 0; |
4672 | filehdr_vaddr = 0; | |
4673 | filehdr_paddr = 0; | |
4674 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4675 | phdrs_paddr = 0; | |
4676 | phdrs = elf_tdata (abfd)->phdr; | |
4677 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4678 | m != NULL; | |
4679 | m = m->next, p++) | |
4680 | { | |
4681 | ++count; | |
4682 | if (p->p_type != PT_LOAD) | |
4683 | continue; | |
4684 | ||
4685 | if (m->includes_filehdr) | |
4686 | { | |
4687 | filehdr_vaddr = p->p_vaddr; | |
4688 | filehdr_paddr = p->p_paddr; | |
4689 | } | |
4690 | if (m->includes_phdrs) | |
4691 | { | |
4692 | phdrs_vaddr = p->p_vaddr; | |
4693 | phdrs_paddr = p->p_paddr; | |
4694 | if (m->includes_filehdr) | |
4695 | { | |
4696 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4697 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4698 | } | |
4699 | } | |
4700 | } | |
4701 | ||
252b5132 RH |
4702 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4703 | m != NULL; | |
4704 | m = m->next, p++) | |
4705 | { | |
1ea63fd2 | 4706 | if (m->count != 0) |
252b5132 | 4707 | { |
1ea63fd2 AM |
4708 | if (p->p_type != PT_LOAD |
4709 | && (p->p_type != PT_NOTE || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4710 | { |
1ea63fd2 AM |
4711 | Elf_Internal_Shdr *hdr; |
4712 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4713 | ||
4714 | hdr = &elf_section_data (m->sections[m->count - 1])->this_hdr; | |
4715 | p->p_filesz = (m->sections[m->count - 1]->filepos | |
4716 | - m->sections[0]->filepos); | |
4717 | if (hdr->sh_type != SHT_NOBITS) | |
4718 | p->p_filesz += hdr->sh_size; | |
4719 | ||
4720 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4721 | } |
252b5132 | 4722 | } |
1ea63fd2 | 4723 | else |
252b5132 RH |
4724 | { |
4725 | if (m->includes_filehdr) | |
4726 | { | |
4727 | p->p_vaddr = filehdr_vaddr; | |
4728 | if (! m->p_paddr_valid) | |
4729 | p->p_paddr = filehdr_paddr; | |
4730 | } | |
4731 | else if (m->includes_phdrs) | |
4732 | { | |
4733 | p->p_vaddr = phdrs_vaddr; | |
4734 | if (! m->p_paddr_valid) | |
4735 | p->p_paddr = phdrs_paddr; | |
4736 | } | |
8c37241b JJ |
4737 | else if (p->p_type == PT_GNU_RELRO) |
4738 | { | |
4739 | Elf_Internal_Phdr *lp; | |
4740 | ||
4741 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4742 | { | |
4743 | if (lp->p_type == PT_LOAD | |
4744 | && lp->p_vaddr <= link_info->relro_end | |
4745 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4746 | && (lp->p_vaddr + lp->p_filesz |
4747 | >= link_info->relro_end)) | |
8c37241b JJ |
4748 | break; |
4749 | } | |
4750 | ||
4751 | if (lp < phdrs + count | |
4752 | && link_info->relro_end > lp->p_vaddr) | |
4753 | { | |
4754 | p->p_vaddr = lp->p_vaddr; | |
4755 | p->p_paddr = lp->p_paddr; | |
4756 | p->p_offset = lp->p_offset; | |
4757 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4758 | p->p_memsz = p->p_filesz; | |
4759 | p->p_align = 1; | |
4760 | p->p_flags = (lp->p_flags & ~PF_W); | |
4761 | } | |
4762 | else | |
4763 | { | |
4764 | memset (p, 0, sizeof *p); | |
4765 | p->p_type = PT_NULL; | |
4766 | } | |
4767 | } | |
252b5132 RH |
4768 | } |
4769 | } | |
4770 | ||
252b5132 RH |
4771 | elf_tdata (abfd)->next_file_pos = off; |
4772 | ||
b34976b6 | 4773 | return TRUE; |
252b5132 RH |
4774 | } |
4775 | ||
252b5132 RH |
4776 | /* Work out the file positions of all the sections. This is called by |
4777 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4778 | VMAs must be known before this is called. | |
4779 | ||
e0638f70 AM |
4780 | Reloc sections come in two flavours: Those processed specially as |
4781 | "side-channel" data attached to a section to which they apply, and | |
4782 | those that bfd doesn't process as relocations. The latter sort are | |
4783 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4784 | consider the former sort here, unless they form part of the loadable | |
4785 | image. Reloc sections not assigned here will be handled later by | |
4786 | assign_file_positions_for_relocs. | |
252b5132 RH |
4787 | |
4788 | We also don't set the positions of the .symtab and .strtab here. */ | |
4789 | ||
b34976b6 | 4790 | static bfd_boolean |
c84fca4d AO |
4791 | assign_file_positions_except_relocs (bfd *abfd, |
4792 | struct bfd_link_info *link_info) | |
252b5132 | 4793 | { |
5c182d5f AM |
4794 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4795 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4796 | file_ptr off; |
9c5bfbb7 | 4797 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4798 | |
4799 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4800 | && bfd_get_format (abfd) != bfd_core) | |
4801 | { | |
5c182d5f AM |
4802 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4803 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4804 | Elf_Internal_Shdr **hdrpp; |
4805 | unsigned int i; | |
4806 | ||
4807 | /* Start after the ELF header. */ | |
4808 | off = i_ehdrp->e_ehsize; | |
4809 | ||
4810 | /* We are not creating an executable, which means that we are | |
4811 | not creating a program header, and that the actual order of | |
4812 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4813 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4814 | { |
4815 | Elf_Internal_Shdr *hdr; | |
4816 | ||
4817 | hdr = *hdrpp; | |
e0638f70 AM |
4818 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4819 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4820 | || i == tdata->symtab_section |
4821 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4822 | || i == tdata->strtab_section) |
4823 | { | |
4824 | hdr->sh_offset = -1; | |
252b5132 | 4825 | } |
9ad5cbcf | 4826 | else |
b34976b6 | 4827 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4828 | |
9ad5cbcf AM |
4829 | if (i == SHN_LORESERVE - 1) |
4830 | { | |
4831 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4832 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4833 | } | |
252b5132 RH |
4834 | } |
4835 | } | |
4836 | else | |
4837 | { | |
f3520d2f AM |
4838 | unsigned int alloc; |
4839 | ||
252b5132 RH |
4840 | /* Assign file positions for the loaded sections based on the |
4841 | assignment of sections to segments. */ | |
f3520d2f AM |
4842 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4843 | return FALSE; | |
4844 | ||
4845 | /* And for non-load sections. */ | |
4846 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4847 | return FALSE; | |
4848 | ||
e36284ab AM |
4849 | if (bed->elf_backend_modify_program_headers != NULL) |
4850 | { | |
4851 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4852 | return FALSE; | |
4853 | } | |
4854 | ||
f3520d2f AM |
4855 | /* Write out the program headers. */ |
4856 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4857 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4858 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4859 | return FALSE; |
252b5132 | 4860 | |
5c182d5f | 4861 | off = tdata->next_file_pos; |
252b5132 RH |
4862 | } |
4863 | ||
4864 | /* Place the section headers. */ | |
45d6a902 | 4865 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4866 | i_ehdrp->e_shoff = off; |
4867 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4868 | ||
5c182d5f | 4869 | tdata->next_file_pos = off; |
252b5132 | 4870 | |
b34976b6 | 4871 | return TRUE; |
252b5132 RH |
4872 | } |
4873 | ||
b34976b6 | 4874 | static bfd_boolean |
217aa764 | 4875 | prep_headers (bfd *abfd) |
252b5132 RH |
4876 | { |
4877 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4878 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4879 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4880 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4881 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4882 | |
4883 | i_ehdrp = elf_elfheader (abfd); | |
4884 | i_shdrp = elf_elfsections (abfd); | |
4885 | ||
2b0f7ef9 | 4886 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4887 | if (shstrtab == NULL) |
b34976b6 | 4888 | return FALSE; |
252b5132 RH |
4889 | |
4890 | elf_shstrtab (abfd) = shstrtab; | |
4891 | ||
4892 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4893 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4894 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4895 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4896 | ||
4897 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4898 | i_ehdrp->e_ident[EI_DATA] = | |
4899 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4900 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4901 | ||
252b5132 RH |
4902 | if ((abfd->flags & DYNAMIC) != 0) |
4903 | i_ehdrp->e_type = ET_DYN; | |
4904 | else if ((abfd->flags & EXEC_P) != 0) | |
4905 | i_ehdrp->e_type = ET_EXEC; | |
4906 | else if (bfd_get_format (abfd) == bfd_core) | |
4907 | i_ehdrp->e_type = ET_CORE; | |
4908 | else | |
4909 | i_ehdrp->e_type = ET_REL; | |
4910 | ||
4911 | switch (bfd_get_arch (abfd)) | |
4912 | { | |
4913 | case bfd_arch_unknown: | |
4914 | i_ehdrp->e_machine = EM_NONE; | |
4915 | break; | |
aa4f99bb AO |
4916 | |
4917 | /* There used to be a long list of cases here, each one setting | |
4918 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4919 | in the corresponding bfd definition. To avoid duplication, | |
4920 | the switch was removed. Machines that need special handling | |
4921 | can generally do it in elf_backend_final_write_processing(), | |
4922 | unless they need the information earlier than the final write. | |
4923 | Such need can generally be supplied by replacing the tests for | |
4924 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4925 | default: |
9c5bfbb7 AM |
4926 | i_ehdrp->e_machine = bed->elf_machine_code; |
4927 | } | |
aa4f99bb | 4928 | |
252b5132 RH |
4929 | i_ehdrp->e_version = bed->s->ev_current; |
4930 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4931 | ||
c044fabd | 4932 | /* No program header, for now. */ |
252b5132 RH |
4933 | i_ehdrp->e_phoff = 0; |
4934 | i_ehdrp->e_phentsize = 0; | |
4935 | i_ehdrp->e_phnum = 0; | |
4936 | ||
c044fabd | 4937 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4938 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4939 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4940 | ||
c044fabd | 4941 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4942 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4943 | /* It all happens later. */ |
4944 | ; | |
252b5132 RH |
4945 | else |
4946 | { | |
4947 | i_ehdrp->e_phentsize = 0; | |
4948 | i_phdrp = 0; | |
4949 | i_ehdrp->e_phoff = 0; | |
4950 | } | |
4951 | ||
4952 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4953 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4954 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4955 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4956 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4957 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4958 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4959 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4960 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4961 | return FALSE; |
252b5132 | 4962 | |
b34976b6 | 4963 | return TRUE; |
252b5132 RH |
4964 | } |
4965 | ||
4966 | /* Assign file positions for all the reloc sections which are not part | |
4967 | of the loadable file image. */ | |
4968 | ||
4969 | void | |
217aa764 | 4970 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4971 | { |
4972 | file_ptr off; | |
9ad5cbcf | 4973 | unsigned int i, num_sec; |
252b5132 RH |
4974 | Elf_Internal_Shdr **shdrpp; |
4975 | ||
4976 | off = elf_tdata (abfd)->next_file_pos; | |
4977 | ||
9ad5cbcf AM |
4978 | num_sec = elf_numsections (abfd); |
4979 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4980 | { |
4981 | Elf_Internal_Shdr *shdrp; | |
4982 | ||
4983 | shdrp = *shdrpp; | |
4984 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4985 | && shdrp->sh_offset == -1) | |
b34976b6 | 4986 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4987 | } |
4988 | ||
4989 | elf_tdata (abfd)->next_file_pos = off; | |
4990 | } | |
4991 | ||
b34976b6 | 4992 | bfd_boolean |
217aa764 | 4993 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4994 | { |
9c5bfbb7 | 4995 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4996 | Elf_Internal_Ehdr *i_ehdrp; |
4997 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4998 | bfd_boolean failed; |
9ad5cbcf | 4999 | unsigned int count, num_sec; |
252b5132 RH |
5000 | |
5001 | if (! abfd->output_has_begun | |
217aa764 | 5002 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 5003 | return FALSE; |
252b5132 RH |
5004 | |
5005 | i_shdrp = elf_elfsections (abfd); | |
5006 | i_ehdrp = elf_elfheader (abfd); | |
5007 | ||
b34976b6 | 5008 | failed = FALSE; |
252b5132 RH |
5009 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
5010 | if (failed) | |
b34976b6 | 5011 | return FALSE; |
252b5132 RH |
5012 | |
5013 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
5014 | ||
c044fabd | 5015 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
5016 | num_sec = elf_numsections (abfd); |
5017 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
5018 | { |
5019 | if (bed->elf_backend_section_processing) | |
5020 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
5021 | if (i_shdrp[count]->contents) | |
5022 | { | |
dc810e39 AM |
5023 | bfd_size_type amt = i_shdrp[count]->sh_size; |
5024 | ||
252b5132 | 5025 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 5026 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 5027 | return FALSE; |
252b5132 | 5028 | } |
9ad5cbcf AM |
5029 | if (count == SHN_LORESERVE - 1) |
5030 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
5031 | } |
5032 | ||
5033 | /* Write out the section header names. */ | |
26ae6d5e DJ |
5034 | if (elf_shstrtab (abfd) != NULL |
5035 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
5036 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 5037 | return FALSE; |
252b5132 RH |
5038 | |
5039 | if (bed->elf_backend_final_write_processing) | |
5040 | (*bed->elf_backend_final_write_processing) (abfd, | |
5041 | elf_tdata (abfd)->linker); | |
5042 | ||
5043 | return bed->s->write_shdrs_and_ehdr (abfd); | |
5044 | } | |
5045 | ||
b34976b6 | 5046 | bfd_boolean |
217aa764 | 5047 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5048 | { |
c044fabd | 5049 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5050 | return _bfd_elf_write_object_contents (abfd); |
5051 | } | |
c044fabd KH |
5052 | |
5053 | /* Given a section, search the header to find them. */ | |
5054 | ||
252b5132 | 5055 | int |
198beae2 | 5056 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5057 | { |
9c5bfbb7 | 5058 | const struct elf_backend_data *bed; |
252b5132 | 5059 | int index; |
252b5132 | 5060 | |
9ad5cbcf AM |
5061 | if (elf_section_data (asect) != NULL |
5062 | && elf_section_data (asect)->this_idx != 0) | |
5063 | return elf_section_data (asect)->this_idx; | |
5064 | ||
5065 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5066 | index = SHN_ABS; |
5067 | else if (bfd_is_com_section (asect)) | |
5068 | index = SHN_COMMON; | |
5069 | else if (bfd_is_und_section (asect)) | |
5070 | index = SHN_UNDEF; | |
5071 | else | |
6dc132d9 | 5072 | index = -1; |
252b5132 | 5073 | |
af746e92 | 5074 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5075 | if (bed->elf_backend_section_from_bfd_section) |
5076 | { | |
af746e92 | 5077 | int retval = index; |
9ad5cbcf | 5078 | |
af746e92 AM |
5079 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5080 | return retval; | |
252b5132 RH |
5081 | } |
5082 | ||
af746e92 AM |
5083 | if (index == -1) |
5084 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 5085 | |
af746e92 | 5086 | return index; |
252b5132 RH |
5087 | } |
5088 | ||
5089 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5090 | on error. */ | |
5091 | ||
5092 | int | |
217aa764 | 5093 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5094 | { |
5095 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5096 | int idx; | |
5097 | flagword flags = asym_ptr->flags; | |
5098 | ||
5099 | /* When gas creates relocations against local labels, it creates its | |
5100 | own symbol for the section, but does put the symbol into the | |
5101 | symbol chain, so udata is 0. When the linker is generating | |
5102 | relocatable output, this section symbol may be for one of the | |
5103 | input sections rather than the output section. */ | |
5104 | if (asym_ptr->udata.i == 0 | |
5105 | && (flags & BSF_SECTION_SYM) | |
5106 | && asym_ptr->section) | |
5107 | { | |
5372391b | 5108 | asection *sec; |
252b5132 RH |
5109 | int indx; |
5110 | ||
5372391b AM |
5111 | sec = asym_ptr->section; |
5112 | if (sec->owner != abfd && sec->output_section != NULL) | |
5113 | sec = sec->output_section; | |
5114 | if (sec->owner == abfd | |
5115 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5116 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5117 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5118 | } | |
5119 | ||
5120 | idx = asym_ptr->udata.i; | |
5121 | ||
5122 | if (idx == 0) | |
5123 | { | |
5124 | /* This case can occur when using --strip-symbol on a symbol | |
5125 | which is used in a relocation entry. */ | |
5126 | (*_bfd_error_handler) | |
d003868e AM |
5127 | (_("%B: symbol `%s' required but not present"), |
5128 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5129 | bfd_set_error (bfd_error_no_symbols); |
5130 | return -1; | |
5131 | } | |
5132 | ||
5133 | #if DEBUG & 4 | |
5134 | { | |
5135 | fprintf (stderr, | |
661a3fd4 | 5136 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5137 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5138 | elf_symbol_flags (flags)); | |
5139 | fflush (stderr); | |
5140 | } | |
5141 | #endif | |
5142 | ||
5143 | return idx; | |
5144 | } | |
5145 | ||
84d1d650 | 5146 | /* Rewrite program header information. */ |
252b5132 | 5147 | |
b34976b6 | 5148 | static bfd_boolean |
84d1d650 | 5149 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5150 | { |
b34976b6 AM |
5151 | Elf_Internal_Ehdr *iehdr; |
5152 | struct elf_segment_map *map; | |
5153 | struct elf_segment_map *map_first; | |
5154 | struct elf_segment_map **pointer_to_map; | |
5155 | Elf_Internal_Phdr *segment; | |
5156 | asection *section; | |
5157 | unsigned int i; | |
5158 | unsigned int num_segments; | |
5159 | bfd_boolean phdr_included = FALSE; | |
5160 | bfd_vma maxpagesize; | |
5161 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5162 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5163 | const struct elf_backend_data *bed; |
bc67d8a6 | 5164 | |
caf47ea6 | 5165 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5166 | iehdr = elf_elfheader (ibfd); |
5167 | ||
bc67d8a6 | 5168 | map_first = NULL; |
c044fabd | 5169 | pointer_to_map = &map_first; |
252b5132 RH |
5170 | |
5171 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5172 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5173 | ||
5174 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5175 | #define SEGMENT_END(segment, start) \ |
5176 | (start + (segment->p_memsz > segment->p_filesz \ | |
5177 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5178 | |
eecdbe52 JJ |
5179 | #define SECTION_SIZE(section, segment) \ |
5180 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5181 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5182 | ? section->size : 0) |
eecdbe52 | 5183 | |
b34976b6 | 5184 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5185 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5186 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5187 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5188 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5189 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5190 | |
b34976b6 | 5191 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5192 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5193 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5194 | (section->lma >= base \ | |
eecdbe52 | 5195 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5196 | <= SEGMENT_END (segment, base))) |
252b5132 | 5197 | |
c044fabd | 5198 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5199 | #define IS_COREFILE_NOTE(p, s) \ |
5200 | (p->p_type == PT_NOTE \ | |
5201 | && bfd_get_format (ibfd) == bfd_core \ | |
5202 | && s->vma == 0 && s->lma == 0 \ | |
5203 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5204 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5205 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5206 | |
5207 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5208 | linker, which generates a PT_INTERP section with p_vaddr and | |
5209 | p_memsz set to 0. */ | |
aecc8f8a AM |
5210 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5211 | (p->p_vaddr == 0 \ | |
5212 | && p->p_paddr == 0 \ | |
5213 | && p->p_memsz == 0 \ | |
5214 | && p->p_filesz > 0 \ | |
5215 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5216 | && s->size > 0 \ |
aecc8f8a | 5217 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5218 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5219 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5220 | |
bc67d8a6 NC |
5221 | /* Decide if the given section should be included in the given segment. |
5222 | A section will be included if: | |
f5ffc919 NC |
5223 | 1. It is within the address space of the segment -- we use the LMA |
5224 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5225 | 2. It is an allocated segment, |
5226 | 3. There is an output section associated with it, | |
eecdbe52 | 5227 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5228 | 5. PT_GNU_STACK segments do not include any sections. |
5229 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5230 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5231 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5232 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5233 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5234 | ((((segment->p_paddr \ |
5235 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5236 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5237 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5238 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5239 | && section->output_section != NULL \ |
03394ac9 | 5240 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5241 | && (segment->p_type != PT_TLS \ |
5242 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5243 | && (segment->p_type == PT_LOAD \ | |
5244 | || segment->p_type == PT_TLS \ | |
5245 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5246 | && (segment->p_type != PT_DYNAMIC \ |
5247 | || SECTION_SIZE (section, segment) > 0 \ | |
5248 | || (segment->p_paddr \ | |
5249 | ? segment->p_paddr != section->lma \ | |
5250 | : segment->p_vaddr != section->vma) \ | |
5251 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5252 | == 0)) \ | |
82e51918 | 5253 | && ! section->segment_mark) |
bc67d8a6 | 5254 | |
b34976b6 | 5255 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5256 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5257 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5258 | ||
5259 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5260 | their VMA address ranges and their LMA address ranges overlap. | |
5261 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5262 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5263 | to the same VMA range, but with the .data section mapped to a different | |
5264 | LMA. */ | |
aecc8f8a | 5265 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5266 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5267 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5268 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5269 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5270 | |
5271 | /* Initialise the segment mark field. */ | |
5272 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5273 | section->segment_mark = FALSE; |
bc67d8a6 | 5274 | |
252b5132 | 5275 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5276 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5277 | in the loadable segments. These can be created by weird |
aecc8f8a | 5278 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5279 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5280 | i < num_segments; | |
c044fabd | 5281 | i++, segment++) |
252b5132 | 5282 | { |
252b5132 | 5283 | unsigned int j; |
c044fabd | 5284 | Elf_Internal_Phdr *segment2; |
252b5132 | 5285 | |
aecc8f8a AM |
5286 | if (segment->p_type == PT_INTERP) |
5287 | for (section = ibfd->sections; section; section = section->next) | |
5288 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5289 | { | |
5290 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5291 | assignment code will work. */ |
aecc8f8a AM |
5292 | segment->p_vaddr = section->vma; |
5293 | break; | |
5294 | } | |
5295 | ||
bc67d8a6 NC |
5296 | if (segment->p_type != PT_LOAD) |
5297 | continue; | |
c044fabd | 5298 | |
bc67d8a6 | 5299 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5300 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5301 | { |
5302 | bfd_signed_vma extra_length; | |
c044fabd | 5303 | |
bc67d8a6 NC |
5304 | if (segment2->p_type != PT_LOAD |
5305 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5306 | continue; | |
c044fabd | 5307 | |
bc67d8a6 NC |
5308 | /* Merge the two segments together. */ |
5309 | if (segment2->p_vaddr < segment->p_vaddr) | |
5310 | { | |
c044fabd KH |
5311 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5312 | SEGMENT. */ | |
bc67d8a6 NC |
5313 | extra_length = |
5314 | SEGMENT_END (segment, segment->p_vaddr) | |
5315 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5316 | |
bc67d8a6 NC |
5317 | if (extra_length > 0) |
5318 | { | |
5319 | segment2->p_memsz += extra_length; | |
5320 | segment2->p_filesz += extra_length; | |
5321 | } | |
c044fabd | 5322 | |
bc67d8a6 | 5323 | segment->p_type = PT_NULL; |
c044fabd | 5324 | |
bc67d8a6 NC |
5325 | /* Since we have deleted P we must restart the outer loop. */ |
5326 | i = 0; | |
5327 | segment = elf_tdata (ibfd)->phdr; | |
5328 | break; | |
5329 | } | |
5330 | else | |
5331 | { | |
c044fabd KH |
5332 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5333 | SEGMENT2. */ | |
bc67d8a6 NC |
5334 | extra_length = |
5335 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5336 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5337 | |
bc67d8a6 NC |
5338 | if (extra_length > 0) |
5339 | { | |
5340 | segment->p_memsz += extra_length; | |
5341 | segment->p_filesz += extra_length; | |
5342 | } | |
c044fabd | 5343 | |
bc67d8a6 NC |
5344 | segment2->p_type = PT_NULL; |
5345 | } | |
5346 | } | |
5347 | } | |
c044fabd | 5348 | |
bc67d8a6 NC |
5349 | /* The second scan attempts to assign sections to segments. */ |
5350 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5351 | i < num_segments; | |
5352 | i ++, segment ++) | |
5353 | { | |
5354 | unsigned int section_count; | |
5355 | asection ** sections; | |
5356 | asection * output_section; | |
5357 | unsigned int isec; | |
5358 | bfd_vma matching_lma; | |
5359 | bfd_vma suggested_lma; | |
5360 | unsigned int j; | |
dc810e39 | 5361 | bfd_size_type amt; |
bc67d8a6 NC |
5362 | |
5363 | if (segment->p_type == PT_NULL) | |
5364 | continue; | |
c044fabd | 5365 | |
bc67d8a6 | 5366 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5367 | for (section = ibfd->sections, section_count = 0; |
5368 | section != NULL; | |
5369 | section = section->next) | |
caf47ea6 | 5370 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5371 | ++section_count; |
811072d8 | 5372 | |
b5f852ea NC |
5373 | /* Allocate a segment map big enough to contain |
5374 | all of the sections we have selected. */ | |
dc810e39 AM |
5375 | amt = sizeof (struct elf_segment_map); |
5376 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5377 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5378 | if (map == NULL) |
b34976b6 | 5379 | return FALSE; |
252b5132 RH |
5380 | |
5381 | /* Initialise the fields of the segment map. Default to | |
5382 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5383 | map->next = NULL; |
5384 | map->p_type = segment->p_type; | |
5385 | map->p_flags = segment->p_flags; | |
5386 | map->p_flags_valid = 1; | |
5387 | map->p_paddr = segment->p_paddr; | |
5388 | map->p_paddr_valid = 1; | |
252b5132 RH |
5389 | |
5390 | /* Determine if this segment contains the ELF file header | |
5391 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5392 | map->includes_filehdr = (segment->p_offset == 0 |
5393 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5394 | |
bc67d8a6 | 5395 | map->includes_phdrs = 0; |
252b5132 | 5396 | |
bc67d8a6 | 5397 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5398 | { |
bc67d8a6 NC |
5399 | map->includes_phdrs = |
5400 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5401 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5402 | >= ((bfd_vma) iehdr->e_phoff |
5403 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5404 | |
bc67d8a6 | 5405 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5406 | phdr_included = TRUE; |
252b5132 RH |
5407 | } |
5408 | ||
bc67d8a6 | 5409 | if (section_count == 0) |
252b5132 RH |
5410 | { |
5411 | /* Special segments, such as the PT_PHDR segment, may contain | |
5412 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5413 | something. They are allowed by the ELF spec however, so only |
5414 | a warning is produced. */ | |
bc67d8a6 | 5415 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5416 | (*_bfd_error_handler) |
d003868e AM |
5417 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5418 | ibfd); | |
252b5132 | 5419 | |
bc67d8a6 | 5420 | map->count = 0; |
c044fabd KH |
5421 | *pointer_to_map = map; |
5422 | pointer_to_map = &map->next; | |
252b5132 RH |
5423 | |
5424 | continue; | |
5425 | } | |
5426 | ||
5427 | /* Now scan the sections in the input BFD again and attempt | |
5428 | to add their corresponding output sections to the segment map. | |
5429 | The problem here is how to handle an output section which has | |
5430 | been moved (ie had its LMA changed). There are four possibilities: | |
5431 | ||
5432 | 1. None of the sections have been moved. | |
5433 | In this case we can continue to use the segment LMA from the | |
5434 | input BFD. | |
5435 | ||
5436 | 2. All of the sections have been moved by the same amount. | |
5437 | In this case we can change the segment's LMA to match the LMA | |
5438 | of the first section. | |
5439 | ||
5440 | 3. Some of the sections have been moved, others have not. | |
5441 | In this case those sections which have not been moved can be | |
5442 | placed in the current segment which will have to have its size, | |
5443 | and possibly its LMA changed, and a new segment or segments will | |
5444 | have to be created to contain the other sections. | |
5445 | ||
b5f852ea | 5446 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5447 | In this case we can change the segment's LMA to match the LMA |
5448 | of the first section and we will have to create a new segment | |
5449 | or segments to contain the other sections. | |
5450 | ||
5451 | In order to save time, we allocate an array to hold the section | |
5452 | pointers that we are interested in. As these sections get assigned | |
5453 | to a segment, they are removed from this array. */ | |
5454 | ||
0b14c2aa L |
5455 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5456 | to work around this long long bug. */ | |
d0fb9a8d | 5457 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5458 | if (sections == NULL) |
b34976b6 | 5459 | return FALSE; |
252b5132 RH |
5460 | |
5461 | /* Step One: Scan for segment vs section LMA conflicts. | |
5462 | Also add the sections to the section array allocated above. | |
5463 | Also add the sections to the current segment. In the common | |
5464 | case, where the sections have not been moved, this means that | |
5465 | we have completely filled the segment, and there is nothing | |
5466 | more to do. */ | |
252b5132 | 5467 | isec = 0; |
72730e0c | 5468 | matching_lma = 0; |
252b5132 RH |
5469 | suggested_lma = 0; |
5470 | ||
bc67d8a6 NC |
5471 | for (j = 0, section = ibfd->sections; |
5472 | section != NULL; | |
5473 | section = section->next) | |
252b5132 | 5474 | { |
caf47ea6 | 5475 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5476 | { |
bc67d8a6 NC |
5477 | output_section = section->output_section; |
5478 | ||
5479 | sections[j ++] = section; | |
252b5132 RH |
5480 | |
5481 | /* The Solaris native linker always sets p_paddr to 0. | |
5482 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5483 | correct value. Note - some backends require that |
5484 | p_paddr be left as zero. */ | |
bc67d8a6 | 5485 | if (segment->p_paddr == 0 |
4455705d | 5486 | && segment->p_vaddr != 0 |
5e8d7549 | 5487 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5488 | && isec == 0 |
bc67d8a6 NC |
5489 | && output_section->lma != 0 |
5490 | && (output_section->vma == (segment->p_vaddr | |
5491 | + (map->includes_filehdr | |
5492 | ? iehdr->e_ehsize | |
5493 | : 0) | |
5494 | + (map->includes_phdrs | |
079e9a2f AM |
5495 | ? (iehdr->e_phnum |
5496 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5497 | : 0)))) |
5498 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5499 | |
5500 | /* Match up the physical address of the segment with the | |
5501 | LMA address of the output section. */ | |
bc67d8a6 | 5502 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5503 | || IS_COREFILE_NOTE (segment, section) |
5504 | || (bed->want_p_paddr_set_to_zero && | |
5505 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5506 | ) | |
252b5132 RH |
5507 | { |
5508 | if (matching_lma == 0) | |
bc67d8a6 | 5509 | matching_lma = output_section->lma; |
252b5132 RH |
5510 | |
5511 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5512 | then it does not overlap any other section within that |
252b5132 | 5513 | segment. */ |
bc67d8a6 | 5514 | map->sections[isec ++] = output_section; |
252b5132 RH |
5515 | } |
5516 | else if (suggested_lma == 0) | |
bc67d8a6 | 5517 | suggested_lma = output_section->lma; |
252b5132 RH |
5518 | } |
5519 | } | |
5520 | ||
bc67d8a6 | 5521 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5522 | |
5523 | /* Step Two: Adjust the physical address of the current segment, | |
5524 | if necessary. */ | |
bc67d8a6 | 5525 | if (isec == section_count) |
252b5132 RH |
5526 | { |
5527 | /* All of the sections fitted within the segment as currently | |
5528 | specified. This is the default case. Add the segment to | |
5529 | the list of built segments and carry on to process the next | |
5530 | program header in the input BFD. */ | |
bc67d8a6 | 5531 | map->count = section_count; |
c044fabd KH |
5532 | *pointer_to_map = map; |
5533 | pointer_to_map = &map->next; | |
252b5132 RH |
5534 | |
5535 | free (sections); | |
5536 | continue; | |
5537 | } | |
252b5132 RH |
5538 | else |
5539 | { | |
72730e0c AM |
5540 | if (matching_lma != 0) |
5541 | { | |
5542 | /* At least one section fits inside the current segment. | |
5543 | Keep it, but modify its physical address to match the | |
5544 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5545 | map->p_paddr = matching_lma; |
72730e0c AM |
5546 | } |
5547 | else | |
5548 | { | |
5549 | /* None of the sections fitted inside the current segment. | |
5550 | Change the current segment's physical address to match | |
5551 | the LMA of the first section. */ | |
bc67d8a6 | 5552 | map->p_paddr = suggested_lma; |
72730e0c AM |
5553 | } |
5554 | ||
bc67d8a6 NC |
5555 | /* Offset the segment physical address from the lma |
5556 | to allow for space taken up by elf headers. */ | |
5557 | if (map->includes_filehdr) | |
5558 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5559 | |
bc67d8a6 NC |
5560 | if (map->includes_phdrs) |
5561 | { | |
5562 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5563 | ||
5564 | /* iehdr->e_phnum is just an estimate of the number | |
5565 | of program headers that we will need. Make a note | |
5566 | here of the number we used and the segment we chose | |
5567 | to hold these headers, so that we can adjust the | |
5568 | offset when we know the correct value. */ | |
5569 | phdr_adjust_num = iehdr->e_phnum; | |
5570 | phdr_adjust_seg = map; | |
5571 | } | |
252b5132 RH |
5572 | } |
5573 | ||
5574 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5575 | those that fit to the current segment and removing them from the |
252b5132 RH |
5576 | sections array; but making sure not to leave large gaps. Once all |
5577 | possible sections have been assigned to the current segment it is | |
5578 | added to the list of built segments and if sections still remain | |
5579 | to be assigned, a new segment is constructed before repeating | |
5580 | the loop. */ | |
5581 | isec = 0; | |
5582 | do | |
5583 | { | |
bc67d8a6 | 5584 | map->count = 0; |
252b5132 RH |
5585 | suggested_lma = 0; |
5586 | ||
5587 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5588 | for (j = 0; j < section_count; j++) |
252b5132 | 5589 | { |
bc67d8a6 | 5590 | section = sections[j]; |
252b5132 | 5591 | |
bc67d8a6 | 5592 | if (section == NULL) |
252b5132 RH |
5593 | continue; |
5594 | ||
bc67d8a6 | 5595 | output_section = section->output_section; |
252b5132 | 5596 | |
bc67d8a6 | 5597 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5598 | |
bc67d8a6 NC |
5599 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5600 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5601 | { |
bc67d8a6 | 5602 | if (map->count == 0) |
252b5132 RH |
5603 | { |
5604 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5605 | the beginning of the segment, then something is |
5606 | wrong. */ | |
5607 | if (output_section->lma != | |
5608 | (map->p_paddr | |
5609 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5610 | + (map->includes_phdrs | |
5611 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5612 | : 0))) | |
252b5132 RH |
5613 | abort (); |
5614 | } | |
5615 | else | |
5616 | { | |
5617 | asection * prev_sec; | |
252b5132 | 5618 | |
bc67d8a6 | 5619 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5620 | |
5621 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5622 | and the start of this section is more than |
5623 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5624 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5625 | maxpagesize) |
caf47ea6 | 5626 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5627 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5628 | > output_section->lma)) |
252b5132 RH |
5629 | { |
5630 | if (suggested_lma == 0) | |
bc67d8a6 | 5631 | suggested_lma = output_section->lma; |
252b5132 RH |
5632 | |
5633 | continue; | |
5634 | } | |
5635 | } | |
5636 | ||
bc67d8a6 | 5637 | map->sections[map->count++] = output_section; |
252b5132 RH |
5638 | ++isec; |
5639 | sections[j] = NULL; | |
b34976b6 | 5640 | section->segment_mark = TRUE; |
252b5132 RH |
5641 | } |
5642 | else if (suggested_lma == 0) | |
bc67d8a6 | 5643 | suggested_lma = output_section->lma; |
252b5132 RH |
5644 | } |
5645 | ||
bc67d8a6 | 5646 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5647 | |
5648 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5649 | *pointer_to_map = map; |
5650 | pointer_to_map = &map->next; | |
252b5132 | 5651 | |
bc67d8a6 | 5652 | if (isec < section_count) |
252b5132 RH |
5653 | { |
5654 | /* We still have not allocated all of the sections to | |
5655 | segments. Create a new segment here, initialise it | |
5656 | and carry on looping. */ | |
dc810e39 AM |
5657 | amt = sizeof (struct elf_segment_map); |
5658 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5659 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5660 | if (map == NULL) |
5ed6aba4 NC |
5661 | { |
5662 | free (sections); | |
5663 | return FALSE; | |
5664 | } | |
252b5132 RH |
5665 | |
5666 | /* Initialise the fields of the segment map. Set the physical | |
5667 | physical address to the LMA of the first section that has | |
5668 | not yet been assigned. */ | |
bc67d8a6 NC |
5669 | map->next = NULL; |
5670 | map->p_type = segment->p_type; | |
5671 | map->p_flags = segment->p_flags; | |
5672 | map->p_flags_valid = 1; | |
5673 | map->p_paddr = suggested_lma; | |
5674 | map->p_paddr_valid = 1; | |
5675 | map->includes_filehdr = 0; | |
5676 | map->includes_phdrs = 0; | |
252b5132 RH |
5677 | } |
5678 | } | |
bc67d8a6 | 5679 | while (isec < section_count); |
252b5132 RH |
5680 | |
5681 | free (sections); | |
5682 | } | |
5683 | ||
5684 | /* The Solaris linker creates program headers in which all the | |
5685 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5686 | file, we get confused. Check for this case, and if we find it | |
5687 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5688 | for (map = map_first; map != NULL; map = map->next) |
5689 | if (map->p_paddr != 0) | |
252b5132 | 5690 | break; |
bc67d8a6 | 5691 | if (map == NULL) |
b5f852ea NC |
5692 | for (map = map_first; map != NULL; map = map->next) |
5693 | map->p_paddr_valid = 0; | |
252b5132 | 5694 | |
bc67d8a6 NC |
5695 | elf_tdata (obfd)->segment_map = map_first; |
5696 | ||
5697 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5698 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5699 | the offset if necessary. */ |
5700 | if (phdr_adjust_seg != NULL) | |
5701 | { | |
5702 | unsigned int count; | |
c044fabd | 5703 | |
bc67d8a6 | 5704 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5705 | count++; |
252b5132 | 5706 | |
bc67d8a6 NC |
5707 | if (count > phdr_adjust_num) |
5708 | phdr_adjust_seg->p_paddr | |
5709 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5710 | } | |
c044fabd | 5711 | |
bc67d8a6 | 5712 | #undef SEGMENT_END |
eecdbe52 | 5713 | #undef SECTION_SIZE |
bc67d8a6 NC |
5714 | #undef IS_CONTAINED_BY_VMA |
5715 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5716 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5717 | #undef IS_SOLARIS_PT_INTERP |
5718 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5719 | #undef SEGMENT_AFTER_SEGMENT | |
5720 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5721 | return TRUE; |
252b5132 RH |
5722 | } |
5723 | ||
84d1d650 L |
5724 | /* Copy ELF program header information. */ |
5725 | ||
5726 | static bfd_boolean | |
5727 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5728 | { | |
5729 | Elf_Internal_Ehdr *iehdr; | |
5730 | struct elf_segment_map *map; | |
5731 | struct elf_segment_map *map_first; | |
5732 | struct elf_segment_map **pointer_to_map; | |
5733 | Elf_Internal_Phdr *segment; | |
5734 | unsigned int i; | |
5735 | unsigned int num_segments; | |
5736 | bfd_boolean phdr_included = FALSE; | |
5737 | ||
5738 | iehdr = elf_elfheader (ibfd); | |
5739 | ||
5740 | map_first = NULL; | |
5741 | pointer_to_map = &map_first; | |
5742 | ||
5743 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5744 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5745 | i < num_segments; | |
5746 | i++, segment++) | |
5747 | { | |
5748 | asection *section; | |
5749 | unsigned int section_count; | |
5750 | bfd_size_type amt; | |
5751 | Elf_Internal_Shdr *this_hdr; | |
5752 | ||
5753 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5754 | if (segment->p_type == PT_NULL) | |
5755 | continue; | |
5756 | ||
5757 | /* Compute how many sections are in this segment. */ | |
5758 | for (section = ibfd->sections, section_count = 0; | |
5759 | section != NULL; | |
5760 | section = section->next) | |
5761 | { | |
5762 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5763 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5764 | section_count++; | |
5765 | } | |
5766 | ||
5767 | /* Allocate a segment map big enough to contain | |
5768 | all of the sections we have selected. */ | |
5769 | amt = sizeof (struct elf_segment_map); | |
5770 | if (section_count != 0) | |
5771 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
5772 | map = bfd_alloc (obfd, amt); | |
5773 | if (map == NULL) | |
5774 | return FALSE; | |
5775 | ||
5776 | /* Initialize the fields of the output segment map with the | |
5777 | input segment. */ | |
5778 | map->next = NULL; | |
5779 | map->p_type = segment->p_type; | |
5780 | map->p_flags = segment->p_flags; | |
5781 | map->p_flags_valid = 1; | |
5782 | map->p_paddr = segment->p_paddr; | |
5783 | map->p_paddr_valid = 1; | |
3f570048 AM |
5784 | map->p_align = segment->p_align; |
5785 | map->p_align_valid = 1; | |
84d1d650 L |
5786 | |
5787 | /* Determine if this segment contains the ELF file header | |
5788 | and if it contains the program headers themselves. */ | |
5789 | map->includes_filehdr = (segment->p_offset == 0 | |
5790 | && segment->p_filesz >= iehdr->e_ehsize); | |
5791 | ||
5792 | map->includes_phdrs = 0; | |
5793 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5794 | { | |
5795 | map->includes_phdrs = | |
5796 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5797 | && (segment->p_offset + segment->p_filesz | |
5798 | >= ((bfd_vma) iehdr->e_phoff | |
5799 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5800 | ||
5801 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5802 | phdr_included = TRUE; | |
5803 | } | |
5804 | ||
5805 | if (section_count != 0) | |
5806 | { | |
5807 | unsigned int isec = 0; | |
5808 | ||
5809 | for (section = ibfd->sections; | |
5810 | section != NULL; | |
5811 | section = section->next) | |
5812 | { | |
5813 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5814 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5815 | map->sections[isec++] = section->output_section; | |
5816 | } | |
5817 | } | |
5818 | ||
5819 | map->count = section_count; | |
5820 | *pointer_to_map = map; | |
5821 | pointer_to_map = &map->next; | |
5822 | } | |
5823 | ||
5824 | elf_tdata (obfd)->segment_map = map_first; | |
5825 | return TRUE; | |
5826 | } | |
5827 | ||
5828 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5829 | information. */ | |
5830 | ||
5831 | static bfd_boolean | |
5832 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5833 | { | |
84d1d650 L |
5834 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5835 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5836 | return TRUE; | |
5837 | ||
5838 | if (elf_tdata (ibfd)->phdr == NULL) | |
5839 | return TRUE; | |
5840 | ||
5841 | if (ibfd->xvec == obfd->xvec) | |
5842 | { | |
5843 | /* Check if any sections in the input BFD covered by ELF program | |
5844 | header are changed. */ | |
d55ce4e2 | 5845 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5846 | asection *section, *osec; |
5847 | unsigned int i, num_segments; | |
5848 | Elf_Internal_Shdr *this_hdr; | |
5849 | ||
5850 | /* Initialize the segment mark field. */ | |
5851 | for (section = obfd->sections; section != NULL; | |
5852 | section = section->next) | |
5853 | section->segment_mark = FALSE; | |
5854 | ||
5855 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5856 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5857 | i < num_segments; | |
5858 | i++, segment++) | |
5859 | { | |
5860 | for (section = ibfd->sections; | |
5861 | section != NULL; section = section->next) | |
5862 | { | |
5863 | /* We mark the output section so that we know it comes | |
5864 | from the input BFD. */ | |
5865 | osec = section->output_section; | |
5866 | if (osec) | |
5867 | osec->segment_mark = TRUE; | |
5868 | ||
5869 | /* Check if this section is covered by the segment. */ | |
5870 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5871 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5872 | { | |
5873 | /* FIXME: Check if its output section is changed or | |
5874 | removed. What else do we need to check? */ | |
5875 | if (osec == NULL | |
5876 | || section->flags != osec->flags | |
5877 | || section->lma != osec->lma | |
5878 | || section->vma != osec->vma | |
5879 | || section->size != osec->size | |
5880 | || section->rawsize != osec->rawsize | |
5881 | || section->alignment_power != osec->alignment_power) | |
5882 | goto rewrite; | |
5883 | } | |
5884 | } | |
5885 | } | |
5886 | ||
5887 | /* Check to see if any output section doesn't come from the | |
5888 | input BFD. */ | |
5889 | for (section = obfd->sections; section != NULL; | |
5890 | section = section->next) | |
5891 | { | |
5892 | if (section->segment_mark == FALSE) | |
5893 | goto rewrite; | |
5894 | else | |
5895 | section->segment_mark = FALSE; | |
5896 | } | |
5897 | ||
5898 | return copy_elf_program_header (ibfd, obfd); | |
5899 | } | |
5900 | ||
5901 | rewrite: | |
5902 | return rewrite_elf_program_header (ibfd, obfd); | |
5903 | } | |
5904 | ||
ccd2ec6a L |
5905 | /* Initialize private output section information from input section. */ |
5906 | ||
5907 | bfd_boolean | |
5908 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5909 | asection *isec, | |
5910 | bfd *obfd, | |
5911 | asection *osec, | |
5912 | struct bfd_link_info *link_info) | |
5913 | ||
5914 | { | |
5915 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5916 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
5917 | ||
5918 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5919 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
5920 | return TRUE; | |
5921 | ||
e843e0f8 | 5922 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 5923 | output BFD section flags have been set to something different. |
e843e0f8 L |
5924 | elf_fake_sections will set ELF section type based on BFD |
5925 | section flags. */ | |
8b95791f AM |
5926 | if (osec->flags == isec->flags |
5927 | || (osec->flags == 0 && elf_section_type (osec) == SHT_NULL)) | |
ccd2ec6a L |
5928 | elf_section_type (osec) = elf_section_type (isec); |
5929 | ||
5930 | /* Set things up for objcopy and relocatable link. The output | |
5931 | SHT_GROUP section will have its elf_next_in_group pointing back | |
5932 | to the input group members. Ignore linker created group section. | |
5933 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
5934 | if (need_group) |
5935 | { | |
5936 | if (elf_sec_group (isec) == NULL | |
5937 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5938 | { | |
5939 | if (elf_section_flags (isec) & SHF_GROUP) | |
5940 | elf_section_flags (osec) |= SHF_GROUP; | |
5941 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5942 | elf_group_name (osec) = elf_group_name (isec); | |
5943 | } | |
5944 | } | |
5945 | ||
5946 | ihdr = &elf_section_data (isec)->this_hdr; | |
5947 | ||
5948 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
5949 | don't use the output section of the linked-to section since it | |
5950 | may be NULL at this point. */ | |
5951 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
5952 | { | |
5953 | ohdr = &elf_section_data (osec)->this_hdr; | |
5954 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
5955 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
5956 | } | |
5957 | ||
5958 | osec->use_rela_p = isec->use_rela_p; | |
5959 | ||
5960 | return TRUE; | |
5961 | } | |
5962 | ||
252b5132 RH |
5963 | /* Copy private section information. This copies over the entsize |
5964 | field, and sometimes the info field. */ | |
5965 | ||
b34976b6 | 5966 | bfd_boolean |
217aa764 AM |
5967 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5968 | asection *isec, | |
5969 | bfd *obfd, | |
5970 | asection *osec) | |
252b5132 RH |
5971 | { |
5972 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5973 | ||
5974 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5975 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5976 | return TRUE; |
252b5132 | 5977 | |
252b5132 RH |
5978 | ihdr = &elf_section_data (isec)->this_hdr; |
5979 | ohdr = &elf_section_data (osec)->this_hdr; | |
5980 | ||
5981 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5982 | ||
5983 | if (ihdr->sh_type == SHT_SYMTAB | |
5984 | || ihdr->sh_type == SHT_DYNSYM | |
5985 | || ihdr->sh_type == SHT_GNU_verneed | |
5986 | || ihdr->sh_type == SHT_GNU_verdef) | |
5987 | ohdr->sh_info = ihdr->sh_info; | |
5988 | ||
ccd2ec6a L |
5989 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
5990 | NULL); | |
252b5132 RH |
5991 | } |
5992 | ||
80fccad2 BW |
5993 | /* Copy private header information. */ |
5994 | ||
5995 | bfd_boolean | |
5996 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5997 | { | |
5998 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5999 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6000 | return TRUE; | |
6001 | ||
6002 | /* Copy over private BFD data if it has not already been copied. | |
6003 | This must be done here, rather than in the copy_private_bfd_data | |
6004 | entry point, because the latter is called after the section | |
6005 | contents have been set, which means that the program headers have | |
6006 | already been worked out. */ | |
6007 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
6008 | { | |
6009 | if (! copy_private_bfd_data (ibfd, obfd)) | |
6010 | return FALSE; | |
6011 | } | |
6012 | ||
6013 | return TRUE; | |
6014 | } | |
6015 | ||
252b5132 RH |
6016 | /* Copy private symbol information. If this symbol is in a section |
6017 | which we did not map into a BFD section, try to map the section | |
6018 | index correctly. We use special macro definitions for the mapped | |
6019 | section indices; these definitions are interpreted by the | |
6020 | swap_out_syms function. */ | |
6021 | ||
9ad5cbcf AM |
6022 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6023 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6024 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6025 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6026 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6027 | |
b34976b6 | 6028 | bfd_boolean |
217aa764 AM |
6029 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6030 | asymbol *isymarg, | |
6031 | bfd *obfd, | |
6032 | asymbol *osymarg) | |
252b5132 RH |
6033 | { |
6034 | elf_symbol_type *isym, *osym; | |
6035 | ||
6036 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6037 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6038 | return TRUE; |
252b5132 RH |
6039 | |
6040 | isym = elf_symbol_from (ibfd, isymarg); | |
6041 | osym = elf_symbol_from (obfd, osymarg); | |
6042 | ||
6043 | if (isym != NULL | |
6044 | && osym != NULL | |
6045 | && bfd_is_abs_section (isym->symbol.section)) | |
6046 | { | |
6047 | unsigned int shndx; | |
6048 | ||
6049 | shndx = isym->internal_elf_sym.st_shndx; | |
6050 | if (shndx == elf_onesymtab (ibfd)) | |
6051 | shndx = MAP_ONESYMTAB; | |
6052 | else if (shndx == elf_dynsymtab (ibfd)) | |
6053 | shndx = MAP_DYNSYMTAB; | |
6054 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6055 | shndx = MAP_STRTAB; | |
6056 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6057 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6058 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6059 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6060 | osym->internal_elf_sym.st_shndx = shndx; |
6061 | } | |
6062 | ||
b34976b6 | 6063 | return TRUE; |
252b5132 RH |
6064 | } |
6065 | ||
6066 | /* Swap out the symbols. */ | |
6067 | ||
b34976b6 | 6068 | static bfd_boolean |
217aa764 AM |
6069 | swap_out_syms (bfd *abfd, |
6070 | struct bfd_strtab_hash **sttp, | |
6071 | int relocatable_p) | |
252b5132 | 6072 | { |
9c5bfbb7 | 6073 | const struct elf_backend_data *bed; |
079e9a2f AM |
6074 | int symcount; |
6075 | asymbol **syms; | |
6076 | struct bfd_strtab_hash *stt; | |
6077 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6078 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6079 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6080 | bfd_byte *outbound_syms; |
6081 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6082 | int idx; |
6083 | bfd_size_type amt; | |
174fd7f9 | 6084 | bfd_boolean name_local_sections; |
252b5132 RH |
6085 | |
6086 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6087 | return FALSE; |
252b5132 | 6088 | |
c044fabd | 6089 | /* Dump out the symtabs. */ |
079e9a2f AM |
6090 | stt = _bfd_elf_stringtab_init (); |
6091 | if (stt == NULL) | |
b34976b6 | 6092 | return FALSE; |
252b5132 | 6093 | |
079e9a2f AM |
6094 | bed = get_elf_backend_data (abfd); |
6095 | symcount = bfd_get_symcount (abfd); | |
6096 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6097 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6098 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6099 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6100 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6101 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6102 | |
6103 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6104 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6105 | ||
d0fb9a8d | 6106 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6107 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6108 | { |
6109 | _bfd_stringtab_free (stt); | |
6110 | return FALSE; | |
6111 | } | |
217aa764 | 6112 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6113 | |
9ad5cbcf AM |
6114 | outbound_shndx = NULL; |
6115 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6116 | if (symtab_shndx_hdr->sh_name != 0) | |
6117 | { | |
6118 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6119 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6120 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6121 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6122 | { |
6123 | _bfd_stringtab_free (stt); | |
6124 | return FALSE; | |
6125 | } | |
6126 | ||
9ad5cbcf AM |
6127 | symtab_shndx_hdr->contents = outbound_shndx; |
6128 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6129 | symtab_shndx_hdr->sh_size = amt; | |
6130 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6131 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6132 | } | |
6133 | ||
589e6347 | 6134 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6135 | { |
6136 | /* Fill in zeroth symbol and swap it out. */ | |
6137 | Elf_Internal_Sym sym; | |
6138 | sym.st_name = 0; | |
6139 | sym.st_value = 0; | |
6140 | sym.st_size = 0; | |
6141 | sym.st_info = 0; | |
6142 | sym.st_other = 0; | |
6143 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6144 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6145 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6146 | if (outbound_shndx != NULL) |
6147 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6148 | } |
252b5132 | 6149 | |
174fd7f9 RS |
6150 | name_local_sections |
6151 | = (bed->elf_backend_name_local_section_symbols | |
6152 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6153 | ||
079e9a2f AM |
6154 | syms = bfd_get_outsymbols (abfd); |
6155 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6156 | { |
252b5132 | 6157 | Elf_Internal_Sym sym; |
079e9a2f AM |
6158 | bfd_vma value = syms[idx]->value; |
6159 | elf_symbol_type *type_ptr; | |
6160 | flagword flags = syms[idx]->flags; | |
6161 | int type; | |
252b5132 | 6162 | |
174fd7f9 RS |
6163 | if (!name_local_sections |
6164 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6165 | { |
6166 | /* Local section symbols have no name. */ | |
6167 | sym.st_name = 0; | |
6168 | } | |
6169 | else | |
6170 | { | |
6171 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6172 | syms[idx]->name, | |
b34976b6 | 6173 | TRUE, FALSE); |
079e9a2f | 6174 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6175 | { |
6176 | _bfd_stringtab_free (stt); | |
6177 | return FALSE; | |
6178 | } | |
079e9a2f | 6179 | } |
252b5132 | 6180 | |
079e9a2f | 6181 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6182 | |
079e9a2f AM |
6183 | if ((flags & BSF_SECTION_SYM) == 0 |
6184 | && bfd_is_com_section (syms[idx]->section)) | |
6185 | { | |
6186 | /* ELF common symbols put the alignment into the `value' field, | |
6187 | and the size into the `size' field. This is backwards from | |
6188 | how BFD handles it, so reverse it here. */ | |
6189 | sym.st_size = value; | |
6190 | if (type_ptr == NULL | |
6191 | || type_ptr->internal_elf_sym.st_value == 0) | |
6192 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6193 | else | |
6194 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6195 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6196 | (abfd, syms[idx]->section); | |
6197 | } | |
6198 | else | |
6199 | { | |
6200 | asection *sec = syms[idx]->section; | |
6201 | int shndx; | |
252b5132 | 6202 | |
079e9a2f AM |
6203 | if (sec->output_section) |
6204 | { | |
6205 | value += sec->output_offset; | |
6206 | sec = sec->output_section; | |
6207 | } | |
589e6347 | 6208 | |
079e9a2f AM |
6209 | /* Don't add in the section vma for relocatable output. */ |
6210 | if (! relocatable_p) | |
6211 | value += sec->vma; | |
6212 | sym.st_value = value; | |
6213 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6214 | ||
6215 | if (bfd_is_abs_section (sec) | |
6216 | && type_ptr != NULL | |
6217 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6218 | { | |
6219 | /* This symbol is in a real ELF section which we did | |
6220 | not create as a BFD section. Undo the mapping done | |
6221 | by copy_private_symbol_data. */ | |
6222 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6223 | switch (shndx) | |
6224 | { | |
6225 | case MAP_ONESYMTAB: | |
6226 | shndx = elf_onesymtab (abfd); | |
6227 | break; | |
6228 | case MAP_DYNSYMTAB: | |
6229 | shndx = elf_dynsymtab (abfd); | |
6230 | break; | |
6231 | case MAP_STRTAB: | |
6232 | shndx = elf_tdata (abfd)->strtab_section; | |
6233 | break; | |
6234 | case MAP_SHSTRTAB: | |
6235 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6236 | break; | |
9ad5cbcf AM |
6237 | case MAP_SYM_SHNDX: |
6238 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6239 | break; | |
079e9a2f AM |
6240 | default: |
6241 | break; | |
6242 | } | |
6243 | } | |
6244 | else | |
6245 | { | |
6246 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6247 | |
079e9a2f AM |
6248 | if (shndx == -1) |
6249 | { | |
6250 | asection *sec2; | |
6251 | ||
6252 | /* Writing this would be a hell of a lot easier if | |
6253 | we had some decent documentation on bfd, and | |
6254 | knew what to expect of the library, and what to | |
6255 | demand of applications. For example, it | |
6256 | appears that `objcopy' might not set the | |
6257 | section of a symbol to be a section that is | |
6258 | actually in the output file. */ | |
6259 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6260 | if (sec2 == NULL) |
6261 | { | |
6262 | _bfd_error_handler (_("\ | |
6263 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6264 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6265 | sec->name); | |
811072d8 | 6266 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6267 | _bfd_stringtab_free (stt); |
589e6347 NC |
6268 | return FALSE; |
6269 | } | |
811072d8 | 6270 | |
079e9a2f AM |
6271 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6272 | BFD_ASSERT (shndx != -1); | |
6273 | } | |
6274 | } | |
252b5132 | 6275 | |
079e9a2f AM |
6276 | sym.st_shndx = shndx; |
6277 | } | |
252b5132 | 6278 | |
13ae64f3 JJ |
6279 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6280 | type = STT_TLS; | |
6281 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6282 | type = STT_FUNC; |
6283 | else if ((flags & BSF_OBJECT) != 0) | |
6284 | type = STT_OBJECT; | |
6285 | else | |
6286 | type = STT_NOTYPE; | |
252b5132 | 6287 | |
13ae64f3 JJ |
6288 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6289 | type = STT_TLS; | |
6290 | ||
589e6347 | 6291 | /* Processor-specific types. */ |
079e9a2f AM |
6292 | if (type_ptr != NULL |
6293 | && bed->elf_backend_get_symbol_type) | |
6294 | type = ((*bed->elf_backend_get_symbol_type) | |
6295 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6296 | |
079e9a2f AM |
6297 | if (flags & BSF_SECTION_SYM) |
6298 | { | |
6299 | if (flags & BSF_GLOBAL) | |
6300 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6301 | else | |
6302 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6303 | } | |
6304 | else if (bfd_is_com_section (syms[idx]->section)) | |
6305 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6306 | else if (bfd_is_und_section (syms[idx]->section)) | |
6307 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6308 | ? STB_WEAK | |
6309 | : STB_GLOBAL), | |
6310 | type); | |
6311 | else if (flags & BSF_FILE) | |
6312 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6313 | else | |
6314 | { | |
6315 | int bind = STB_LOCAL; | |
252b5132 | 6316 | |
079e9a2f AM |
6317 | if (flags & BSF_LOCAL) |
6318 | bind = STB_LOCAL; | |
6319 | else if (flags & BSF_WEAK) | |
6320 | bind = STB_WEAK; | |
6321 | else if (flags & BSF_GLOBAL) | |
6322 | bind = STB_GLOBAL; | |
252b5132 | 6323 | |
079e9a2f AM |
6324 | sym.st_info = ELF_ST_INFO (bind, type); |
6325 | } | |
252b5132 | 6326 | |
079e9a2f AM |
6327 | if (type_ptr != NULL) |
6328 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6329 | else | |
6330 | sym.st_other = 0; | |
252b5132 | 6331 | |
9ad5cbcf | 6332 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6333 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6334 | if (outbound_shndx != NULL) |
6335 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6336 | } |
252b5132 | 6337 | |
079e9a2f AM |
6338 | *sttp = stt; |
6339 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6340 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6341 | |
079e9a2f AM |
6342 | symstrtab_hdr->sh_flags = 0; |
6343 | symstrtab_hdr->sh_addr = 0; | |
6344 | symstrtab_hdr->sh_entsize = 0; | |
6345 | symstrtab_hdr->sh_link = 0; | |
6346 | symstrtab_hdr->sh_info = 0; | |
6347 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6348 | |
b34976b6 | 6349 | return TRUE; |
252b5132 RH |
6350 | } |
6351 | ||
6352 | /* Return the number of bytes required to hold the symtab vector. | |
6353 | ||
6354 | Note that we base it on the count plus 1, since we will null terminate | |
6355 | the vector allocated based on this size. However, the ELF symbol table | |
6356 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6357 | ||
6358 | long | |
217aa764 | 6359 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6360 | { |
6361 | long symcount; | |
6362 | long symtab_size; | |
6363 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6364 | ||
6365 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6366 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6367 | if (symcount > 0) | |
6368 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6369 | |
6370 | return symtab_size; | |
6371 | } | |
6372 | ||
6373 | long | |
217aa764 | 6374 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6375 | { |
6376 | long symcount; | |
6377 | long symtab_size; | |
6378 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6379 | ||
6380 | if (elf_dynsymtab (abfd) == 0) | |
6381 | { | |
6382 | bfd_set_error (bfd_error_invalid_operation); | |
6383 | return -1; | |
6384 | } | |
6385 | ||
6386 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6387 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6388 | if (symcount > 0) | |
6389 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6390 | |
6391 | return symtab_size; | |
6392 | } | |
6393 | ||
6394 | long | |
217aa764 AM |
6395 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6396 | sec_ptr asect) | |
252b5132 RH |
6397 | { |
6398 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6399 | } | |
6400 | ||
6401 | /* Canonicalize the relocs. */ | |
6402 | ||
6403 | long | |
217aa764 AM |
6404 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6405 | sec_ptr section, | |
6406 | arelent **relptr, | |
6407 | asymbol **symbols) | |
252b5132 RH |
6408 | { |
6409 | arelent *tblptr; | |
6410 | unsigned int i; | |
9c5bfbb7 | 6411 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6412 | |
b34976b6 | 6413 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6414 | return -1; |
6415 | ||
6416 | tblptr = section->relocation; | |
6417 | for (i = 0; i < section->reloc_count; i++) | |
6418 | *relptr++ = tblptr++; | |
6419 | ||
6420 | *relptr = NULL; | |
6421 | ||
6422 | return section->reloc_count; | |
6423 | } | |
6424 | ||
6425 | long | |
6cee3f79 | 6426 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6427 | { |
9c5bfbb7 | 6428 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6429 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6430 | |
6431 | if (symcount >= 0) | |
6432 | bfd_get_symcount (abfd) = symcount; | |
6433 | return symcount; | |
6434 | } | |
6435 | ||
6436 | long | |
217aa764 AM |
6437 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6438 | asymbol **allocation) | |
252b5132 | 6439 | { |
9c5bfbb7 | 6440 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6441 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6442 | |
6443 | if (symcount >= 0) | |
6444 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6445 | return symcount; | |
252b5132 RH |
6446 | } |
6447 | ||
8615f3f2 AM |
6448 | /* Return the size required for the dynamic reloc entries. Any loadable |
6449 | section that was actually installed in the BFD, and has type SHT_REL | |
6450 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6451 | dynamic reloc section. */ | |
252b5132 RH |
6452 | |
6453 | long | |
217aa764 | 6454 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6455 | { |
6456 | long ret; | |
6457 | asection *s; | |
6458 | ||
6459 | if (elf_dynsymtab (abfd) == 0) | |
6460 | { | |
6461 | bfd_set_error (bfd_error_invalid_operation); | |
6462 | return -1; | |
6463 | } | |
6464 | ||
6465 | ret = sizeof (arelent *); | |
6466 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6467 | if ((s->flags & SEC_LOAD) != 0 |
6468 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6469 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6470 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6471 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6472 | * sizeof (arelent *)); |
6473 | ||
6474 | return ret; | |
6475 | } | |
6476 | ||
8615f3f2 AM |
6477 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6478 | dynamic relocations as a single block, although they are actually | |
6479 | associated with particular sections; the interface, which was | |
6480 | designed for SunOS style shared libraries, expects that there is only | |
6481 | one set of dynamic relocs. Any loadable section that was actually | |
6482 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6483 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6484 | |
6485 | long | |
217aa764 AM |
6486 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6487 | arelent **storage, | |
6488 | asymbol **syms) | |
252b5132 | 6489 | { |
217aa764 | 6490 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6491 | asection *s; |
6492 | long ret; | |
6493 | ||
6494 | if (elf_dynsymtab (abfd) == 0) | |
6495 | { | |
6496 | bfd_set_error (bfd_error_invalid_operation); | |
6497 | return -1; | |
6498 | } | |
6499 | ||
6500 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6501 | ret = 0; | |
6502 | for (s = abfd->sections; s != NULL; s = s->next) | |
6503 | { | |
8615f3f2 AM |
6504 | if ((s->flags & SEC_LOAD) != 0 |
6505 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6506 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6507 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6508 | { | |
6509 | arelent *p; | |
6510 | long count, i; | |
6511 | ||
b34976b6 | 6512 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6513 | return -1; |
eea6121a | 6514 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6515 | p = s->relocation; |
6516 | for (i = 0; i < count; i++) | |
6517 | *storage++ = p++; | |
6518 | ret += count; | |
6519 | } | |
6520 | } | |
6521 | ||
6522 | *storage = NULL; | |
6523 | ||
6524 | return ret; | |
6525 | } | |
6526 | \f | |
6527 | /* Read in the version information. */ | |
6528 | ||
b34976b6 | 6529 | bfd_boolean |
fc0e6df6 | 6530 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6531 | { |
6532 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6533 | unsigned int freeidx = 0; |
6534 | ||
6535 | if (elf_dynverref (abfd) != 0) | |
6536 | { | |
6537 | Elf_Internal_Shdr *hdr; | |
6538 | Elf_External_Verneed *everneed; | |
6539 | Elf_Internal_Verneed *iverneed; | |
6540 | unsigned int i; | |
d0fb9a8d | 6541 | bfd_byte *contents_end; |
fc0e6df6 PB |
6542 | |
6543 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6544 | ||
d0fb9a8d JJ |
6545 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6546 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6547 | if (elf_tdata (abfd)->verref == NULL) |
6548 | goto error_return; | |
6549 | ||
6550 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6551 | ||
6552 | contents = bfd_malloc (hdr->sh_size); | |
6553 | if (contents == NULL) | |
d0fb9a8d JJ |
6554 | { |
6555 | error_return_verref: | |
6556 | elf_tdata (abfd)->verref = NULL; | |
6557 | elf_tdata (abfd)->cverrefs = 0; | |
6558 | goto error_return; | |
6559 | } | |
fc0e6df6 PB |
6560 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6561 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6562 | goto error_return_verref; |
fc0e6df6 | 6563 | |
d0fb9a8d JJ |
6564 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6565 | goto error_return_verref; | |
6566 | ||
6567 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6568 | == sizeof (Elf_External_Vernaux)); | |
6569 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6570 | everneed = (Elf_External_Verneed *) contents; |
6571 | iverneed = elf_tdata (abfd)->verref; | |
6572 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6573 | { | |
6574 | Elf_External_Vernaux *evernaux; | |
6575 | Elf_Internal_Vernaux *ivernaux; | |
6576 | unsigned int j; | |
6577 | ||
6578 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6579 | ||
6580 | iverneed->vn_bfd = abfd; | |
6581 | ||
6582 | iverneed->vn_filename = | |
6583 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6584 | iverneed->vn_file); | |
6585 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6586 | goto error_return_verref; |
fc0e6df6 | 6587 | |
d0fb9a8d JJ |
6588 | if (iverneed->vn_cnt == 0) |
6589 | iverneed->vn_auxptr = NULL; | |
6590 | else | |
6591 | { | |
6592 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6593 | sizeof (Elf_Internal_Vernaux)); | |
6594 | if (iverneed->vn_auxptr == NULL) | |
6595 | goto error_return_verref; | |
6596 | } | |
6597 | ||
6598 | if (iverneed->vn_aux | |
6599 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6600 | goto error_return_verref; | |
fc0e6df6 PB |
6601 | |
6602 | evernaux = ((Elf_External_Vernaux *) | |
6603 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6604 | ivernaux = iverneed->vn_auxptr; | |
6605 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6606 | { | |
6607 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6608 | ||
6609 | ivernaux->vna_nodename = | |
6610 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6611 | ivernaux->vna_name); | |
6612 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6613 | goto error_return_verref; |
fc0e6df6 PB |
6614 | |
6615 | if (j + 1 < iverneed->vn_cnt) | |
6616 | ivernaux->vna_nextptr = ivernaux + 1; | |
6617 | else | |
6618 | ivernaux->vna_nextptr = NULL; | |
6619 | ||
d0fb9a8d JJ |
6620 | if (ivernaux->vna_next |
6621 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6622 | goto error_return_verref; | |
6623 | ||
fc0e6df6 PB |
6624 | evernaux = ((Elf_External_Vernaux *) |
6625 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6626 | ||
6627 | if (ivernaux->vna_other > freeidx) | |
6628 | freeidx = ivernaux->vna_other; | |
6629 | } | |
6630 | ||
6631 | if (i + 1 < hdr->sh_info) | |
6632 | iverneed->vn_nextref = iverneed + 1; | |
6633 | else | |
6634 | iverneed->vn_nextref = NULL; | |
6635 | ||
d0fb9a8d JJ |
6636 | if (iverneed->vn_next |
6637 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6638 | goto error_return_verref; | |
6639 | ||
fc0e6df6 PB |
6640 | everneed = ((Elf_External_Verneed *) |
6641 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6642 | } | |
6643 | ||
6644 | free (contents); | |
6645 | contents = NULL; | |
6646 | } | |
252b5132 RH |
6647 | |
6648 | if (elf_dynverdef (abfd) != 0) | |
6649 | { | |
6650 | Elf_Internal_Shdr *hdr; | |
6651 | Elf_External_Verdef *everdef; | |
6652 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6653 | Elf_Internal_Verdef *iverdefarr; |
6654 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6655 | unsigned int i; |
062e2358 | 6656 | unsigned int maxidx; |
d0fb9a8d | 6657 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6658 | |
6659 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6660 | ||
217aa764 | 6661 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6662 | if (contents == NULL) |
6663 | goto error_return; | |
6664 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6665 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6666 | goto error_return; |
6667 | ||
d0fb9a8d JJ |
6668 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6669 | goto error_return; | |
6670 | ||
6671 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6672 | >= sizeof (Elf_External_Verdaux)); | |
6673 | contents_end_def = contents + hdr->sh_size | |
6674 | - sizeof (Elf_External_Verdef); | |
6675 | contents_end_aux = contents + hdr->sh_size | |
6676 | - sizeof (Elf_External_Verdaux); | |
6677 | ||
f631889e UD |
6678 | /* We know the number of entries in the section but not the maximum |
6679 | index. Therefore we have to run through all entries and find | |
6680 | the maximum. */ | |
252b5132 | 6681 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6682 | maxidx = 0; |
6683 | for (i = 0; i < hdr->sh_info; ++i) | |
6684 | { | |
6685 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6686 | ||
062e2358 AM |
6687 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6688 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6689 | |
d0fb9a8d JJ |
6690 | if (iverdefmem.vd_next |
6691 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6692 | goto error_return; | |
6693 | ||
f631889e UD |
6694 | everdef = ((Elf_External_Verdef *) |
6695 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6696 | } | |
6697 | ||
fc0e6df6 PB |
6698 | if (default_imported_symver) |
6699 | { | |
6700 | if (freeidx > maxidx) | |
6701 | maxidx = ++freeidx; | |
6702 | else | |
6703 | freeidx = ++maxidx; | |
6704 | } | |
d0fb9a8d JJ |
6705 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6706 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6707 | if (elf_tdata (abfd)->verdef == NULL) |
6708 | goto error_return; | |
6709 | ||
6710 | elf_tdata (abfd)->cverdefs = maxidx; | |
6711 | ||
6712 | everdef = (Elf_External_Verdef *) contents; | |
6713 | iverdefarr = elf_tdata (abfd)->verdef; | |
6714 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6715 | { |
6716 | Elf_External_Verdaux *everdaux; | |
6717 | Elf_Internal_Verdaux *iverdaux; | |
6718 | unsigned int j; | |
6719 | ||
f631889e UD |
6720 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6721 | ||
d0fb9a8d JJ |
6722 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6723 | { | |
6724 | error_return_verdef: | |
6725 | elf_tdata (abfd)->verdef = NULL; | |
6726 | elf_tdata (abfd)->cverdefs = 0; | |
6727 | goto error_return; | |
6728 | } | |
6729 | ||
f631889e UD |
6730 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6731 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6732 | |
6733 | iverdef->vd_bfd = abfd; | |
6734 | ||
d0fb9a8d JJ |
6735 | if (iverdef->vd_cnt == 0) |
6736 | iverdef->vd_auxptr = NULL; | |
6737 | else | |
6738 | { | |
6739 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6740 | sizeof (Elf_Internal_Verdaux)); | |
6741 | if (iverdef->vd_auxptr == NULL) | |
6742 | goto error_return_verdef; | |
6743 | } | |
6744 | ||
6745 | if (iverdef->vd_aux | |
6746 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6747 | goto error_return_verdef; | |
252b5132 RH |
6748 | |
6749 | everdaux = ((Elf_External_Verdaux *) | |
6750 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6751 | iverdaux = iverdef->vd_auxptr; | |
6752 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6753 | { | |
6754 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6755 | ||
6756 | iverdaux->vda_nodename = | |
6757 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6758 | iverdaux->vda_name); | |
6759 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6760 | goto error_return_verdef; |
252b5132 RH |
6761 | |
6762 | if (j + 1 < iverdef->vd_cnt) | |
6763 | iverdaux->vda_nextptr = iverdaux + 1; | |
6764 | else | |
6765 | iverdaux->vda_nextptr = NULL; | |
6766 | ||
d0fb9a8d JJ |
6767 | if (iverdaux->vda_next |
6768 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6769 | goto error_return_verdef; | |
6770 | ||
252b5132 RH |
6771 | everdaux = ((Elf_External_Verdaux *) |
6772 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6773 | } | |
6774 | ||
d0fb9a8d JJ |
6775 | if (iverdef->vd_cnt) |
6776 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6777 | |
d0fb9a8d | 6778 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6779 | iverdef->vd_nextdef = iverdef + 1; |
6780 | else | |
6781 | iverdef->vd_nextdef = NULL; | |
6782 | ||
6783 | everdef = ((Elf_External_Verdef *) | |
6784 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6785 | } | |
6786 | ||
6787 | free (contents); | |
6788 | contents = NULL; | |
6789 | } | |
fc0e6df6 | 6790 | else if (default_imported_symver) |
252b5132 | 6791 | { |
fc0e6df6 PB |
6792 | if (freeidx < 3) |
6793 | freeidx = 3; | |
6794 | else | |
6795 | freeidx++; | |
252b5132 | 6796 | |
d0fb9a8d JJ |
6797 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6798 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6799 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6800 | goto error_return; |
6801 | ||
fc0e6df6 PB |
6802 | elf_tdata (abfd)->cverdefs = freeidx; |
6803 | } | |
252b5132 | 6804 | |
fc0e6df6 PB |
6805 | /* Create a default version based on the soname. */ |
6806 | if (default_imported_symver) | |
6807 | { | |
6808 | Elf_Internal_Verdef *iverdef; | |
6809 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6810 | |
fc0e6df6 | 6811 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6812 | |
fc0e6df6 PB |
6813 | iverdef->vd_version = VER_DEF_CURRENT; |
6814 | iverdef->vd_flags = 0; | |
6815 | iverdef->vd_ndx = freeidx; | |
6816 | iverdef->vd_cnt = 1; | |
252b5132 | 6817 | |
fc0e6df6 | 6818 | iverdef->vd_bfd = abfd; |
252b5132 | 6819 | |
fc0e6df6 PB |
6820 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6821 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6822 | goto error_return_verdef; |
fc0e6df6 | 6823 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6824 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6825 | if (iverdef->vd_auxptr == NULL) | |
6826 | goto error_return_verdef; | |
252b5132 | 6827 | |
fc0e6df6 PB |
6828 | iverdaux = iverdef->vd_auxptr; |
6829 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6830 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6831 | } |
6832 | ||
b34976b6 | 6833 | return TRUE; |
252b5132 RH |
6834 | |
6835 | error_return: | |
5ed6aba4 | 6836 | if (contents != NULL) |
252b5132 | 6837 | free (contents); |
b34976b6 | 6838 | return FALSE; |
252b5132 RH |
6839 | } |
6840 | \f | |
6841 | asymbol * | |
217aa764 | 6842 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6843 | { |
6844 | elf_symbol_type *newsym; | |
dc810e39 | 6845 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6846 | |
217aa764 | 6847 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6848 | if (!newsym) |
6849 | return NULL; | |
6850 | else | |
6851 | { | |
6852 | newsym->symbol.the_bfd = abfd; | |
6853 | return &newsym->symbol; | |
6854 | } | |
6855 | } | |
6856 | ||
6857 | void | |
217aa764 AM |
6858 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6859 | asymbol *symbol, | |
6860 | symbol_info *ret) | |
252b5132 RH |
6861 | { |
6862 | bfd_symbol_info (symbol, ret); | |
6863 | } | |
6864 | ||
6865 | /* Return whether a symbol name implies a local symbol. Most targets | |
6866 | use this function for the is_local_label_name entry point, but some | |
6867 | override it. */ | |
6868 | ||
b34976b6 | 6869 | bfd_boolean |
217aa764 AM |
6870 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6871 | const char *name) | |
252b5132 RH |
6872 | { |
6873 | /* Normal local symbols start with ``.L''. */ | |
6874 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6875 | return TRUE; |
252b5132 RH |
6876 | |
6877 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6878 | DWARF debugging symbols starting with ``..''. */ | |
6879 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6880 | return TRUE; |
252b5132 RH |
6881 | |
6882 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6883 | emitting DWARF debugging output. I suspect this is actually a | |
6884 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6885 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6886 | underscore to be emitted on some ELF targets). For ease of use, | |
6887 | we treat such symbols as local. */ | |
6888 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6889 | return TRUE; |
252b5132 | 6890 | |
b34976b6 | 6891 | return FALSE; |
252b5132 RH |
6892 | } |
6893 | ||
6894 | alent * | |
217aa764 AM |
6895 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6896 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6897 | { |
6898 | abort (); | |
6899 | return NULL; | |
6900 | } | |
6901 | ||
b34976b6 | 6902 | bfd_boolean |
217aa764 AM |
6903 | _bfd_elf_set_arch_mach (bfd *abfd, |
6904 | enum bfd_architecture arch, | |
6905 | unsigned long machine) | |
252b5132 RH |
6906 | { |
6907 | /* If this isn't the right architecture for this backend, and this | |
6908 | isn't the generic backend, fail. */ | |
6909 | if (arch != get_elf_backend_data (abfd)->arch | |
6910 | && arch != bfd_arch_unknown | |
6911 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6912 | return FALSE; |
252b5132 RH |
6913 | |
6914 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6915 | } | |
6916 | ||
d1fad7c6 NC |
6917 | /* Find the function to a particular section and offset, |
6918 | for error reporting. */ | |
252b5132 | 6919 | |
b34976b6 | 6920 | static bfd_boolean |
217aa764 AM |
6921 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6922 | asection *section, | |
6923 | asymbol **symbols, | |
6924 | bfd_vma offset, | |
6925 | const char **filename_ptr, | |
6926 | const char **functionname_ptr) | |
252b5132 | 6927 | { |
252b5132 | 6928 | const char *filename; |
57426232 | 6929 | asymbol *func, *file; |
252b5132 RH |
6930 | bfd_vma low_func; |
6931 | asymbol **p; | |
57426232 JB |
6932 | /* ??? Given multiple file symbols, it is impossible to reliably |
6933 | choose the right file name for global symbols. File symbols are | |
6934 | local symbols, and thus all file symbols must sort before any | |
6935 | global symbols. The ELF spec may be interpreted to say that a | |
6936 | file symbol must sort before other local symbols, but currently | |
6937 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6938 | make a better choice of file name for local symbols by ignoring | |
6939 | file symbols appearing after a given local symbol. */ | |
6940 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6941 | |
252b5132 RH |
6942 | filename = NULL; |
6943 | func = NULL; | |
57426232 | 6944 | file = NULL; |
252b5132 | 6945 | low_func = 0; |
57426232 | 6946 | state = nothing_seen; |
252b5132 RH |
6947 | |
6948 | for (p = symbols; *p != NULL; p++) | |
6949 | { | |
6950 | elf_symbol_type *q; | |
6951 | ||
6952 | q = (elf_symbol_type *) *p; | |
6953 | ||
252b5132 RH |
6954 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6955 | { | |
6956 | default: | |
6957 | break; | |
6958 | case STT_FILE: | |
57426232 JB |
6959 | file = &q->symbol; |
6960 | if (state == symbol_seen) | |
6961 | state = file_after_symbol_seen; | |
6962 | continue; | |
252b5132 RH |
6963 | case STT_NOTYPE: |
6964 | case STT_FUNC: | |
6b40fcba | 6965 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6966 | && q->symbol.value >= low_func |
6967 | && q->symbol.value <= offset) | |
6968 | { | |
6969 | func = (asymbol *) q; | |
6970 | low_func = q->symbol.value; | |
a1923858 AM |
6971 | filename = NULL; |
6972 | if (file != NULL | |
6973 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
6974 | || state != file_after_symbol_seen)) | |
57426232 | 6975 | filename = bfd_asymbol_name (file); |
252b5132 RH |
6976 | } |
6977 | break; | |
6978 | } | |
57426232 JB |
6979 | if (state == nothing_seen) |
6980 | state = symbol_seen; | |
252b5132 RH |
6981 | } |
6982 | ||
6983 | if (func == NULL) | |
b34976b6 | 6984 | return FALSE; |
252b5132 | 6985 | |
d1fad7c6 NC |
6986 | if (filename_ptr) |
6987 | *filename_ptr = filename; | |
6988 | if (functionname_ptr) | |
6989 | *functionname_ptr = bfd_asymbol_name (func); | |
6990 | ||
b34976b6 | 6991 | return TRUE; |
d1fad7c6 NC |
6992 | } |
6993 | ||
6994 | /* Find the nearest line to a particular section and offset, | |
6995 | for error reporting. */ | |
6996 | ||
b34976b6 | 6997 | bfd_boolean |
217aa764 AM |
6998 | _bfd_elf_find_nearest_line (bfd *abfd, |
6999 | asection *section, | |
7000 | asymbol **symbols, | |
7001 | bfd_vma offset, | |
7002 | const char **filename_ptr, | |
7003 | const char **functionname_ptr, | |
7004 | unsigned int *line_ptr) | |
d1fad7c6 | 7005 | { |
b34976b6 | 7006 | bfd_boolean found; |
d1fad7c6 NC |
7007 | |
7008 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7009 | filename_ptr, functionname_ptr, |
7010 | line_ptr)) | |
d1fad7c6 NC |
7011 | { |
7012 | if (!*functionname_ptr) | |
4e8a9624 AM |
7013 | elf_find_function (abfd, section, symbols, offset, |
7014 | *filename_ptr ? NULL : filename_ptr, | |
7015 | functionname_ptr); | |
7016 | ||
b34976b6 | 7017 | return TRUE; |
d1fad7c6 NC |
7018 | } |
7019 | ||
7020 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7021 | filename_ptr, functionname_ptr, |
7022 | line_ptr, 0, | |
7023 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7024 | { |
7025 | if (!*functionname_ptr) | |
4e8a9624 AM |
7026 | elf_find_function (abfd, section, symbols, offset, |
7027 | *filename_ptr ? NULL : filename_ptr, | |
7028 | functionname_ptr); | |
7029 | ||
b34976b6 | 7030 | return TRUE; |
d1fad7c6 NC |
7031 | } |
7032 | ||
7033 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7034 | &found, filename_ptr, |
7035 | functionname_ptr, line_ptr, | |
7036 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7037 | return FALSE; |
dc43ada5 | 7038 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7039 | return TRUE; |
d1fad7c6 NC |
7040 | |
7041 | if (symbols == NULL) | |
b34976b6 | 7042 | return FALSE; |
d1fad7c6 NC |
7043 | |
7044 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7045 | filename_ptr, functionname_ptr)) |
b34976b6 | 7046 | return FALSE; |
d1fad7c6 | 7047 | |
252b5132 | 7048 | *line_ptr = 0; |
b34976b6 | 7049 | return TRUE; |
252b5132 RH |
7050 | } |
7051 | ||
5420f73d L |
7052 | /* Find the line for a symbol. */ |
7053 | ||
7054 | bfd_boolean | |
7055 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7056 | const char **filename_ptr, unsigned int *line_ptr) | |
7057 | { | |
7058 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7059 | filename_ptr, line_ptr, 0, | |
7060 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7061 | } | |
7062 | ||
4ab527b0 FF |
7063 | /* After a call to bfd_find_nearest_line, successive calls to |
7064 | bfd_find_inliner_info can be used to get source information about | |
7065 | each level of function inlining that terminated at the address | |
7066 | passed to bfd_find_nearest_line. Currently this is only supported | |
7067 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7068 | ||
7069 | bfd_boolean | |
7070 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7071 | const char **filename_ptr, | |
7072 | const char **functionname_ptr, | |
7073 | unsigned int *line_ptr) | |
7074 | { | |
7075 | bfd_boolean found; | |
7076 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7077 | functionname_ptr, line_ptr, | |
7078 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7079 | return found; | |
7080 | } | |
7081 | ||
252b5132 | 7082 | int |
a6b96beb | 7083 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7084 | { |
8ded5a0f AM |
7085 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7086 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7087 | |
a6b96beb | 7088 | if (!info->relocatable) |
8ded5a0f | 7089 | { |
62d7a5f6 | 7090 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7091 | |
62d7a5f6 AM |
7092 | if (phdr_size == (bfd_size_type) -1) |
7093 | { | |
7094 | struct elf_segment_map *m; | |
7095 | ||
7096 | phdr_size = 0; | |
7097 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7098 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7099 | |
62d7a5f6 AM |
7100 | if (phdr_size == 0) |
7101 | phdr_size = get_program_header_size (abfd, info); | |
7102 | } | |
8ded5a0f AM |
7103 | |
7104 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7105 | ret += phdr_size; | |
7106 | } | |
7107 | ||
252b5132 RH |
7108 | return ret; |
7109 | } | |
7110 | ||
b34976b6 | 7111 | bfd_boolean |
217aa764 AM |
7112 | _bfd_elf_set_section_contents (bfd *abfd, |
7113 | sec_ptr section, | |
0f867abe | 7114 | const void *location, |
217aa764 AM |
7115 | file_ptr offset, |
7116 | bfd_size_type count) | |
252b5132 RH |
7117 | { |
7118 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7119 | bfd_signed_vma pos; |
252b5132 RH |
7120 | |
7121 | if (! abfd->output_has_begun | |
217aa764 | 7122 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7123 | return FALSE; |
252b5132 RH |
7124 | |
7125 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7126 | pos = hdr->sh_offset + offset; |
7127 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7128 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7129 | return FALSE; |
252b5132 | 7130 | |
b34976b6 | 7131 | return TRUE; |
252b5132 RH |
7132 | } |
7133 | ||
7134 | void | |
217aa764 AM |
7135 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7136 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7137 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7138 | { |
7139 | abort (); | |
7140 | } | |
7141 | ||
252b5132 RH |
7142 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7143 | ||
b34976b6 | 7144 | bfd_boolean |
217aa764 | 7145 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7146 | { |
c044fabd | 7147 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7148 | |
7149 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7150 | { | |
7151 | bfd_reloc_code_real_type code; | |
7152 | reloc_howto_type *howto; | |
7153 | ||
7154 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7155 | equivalent ELF reloc. */ |
252b5132 RH |
7156 | |
7157 | if (areloc->howto->pc_relative) | |
7158 | { | |
7159 | switch (areloc->howto->bitsize) | |
7160 | { | |
7161 | case 8: | |
7162 | code = BFD_RELOC_8_PCREL; | |
7163 | break; | |
7164 | case 12: | |
7165 | code = BFD_RELOC_12_PCREL; | |
7166 | break; | |
7167 | case 16: | |
7168 | code = BFD_RELOC_16_PCREL; | |
7169 | break; | |
7170 | case 24: | |
7171 | code = BFD_RELOC_24_PCREL; | |
7172 | break; | |
7173 | case 32: | |
7174 | code = BFD_RELOC_32_PCREL; | |
7175 | break; | |
7176 | case 64: | |
7177 | code = BFD_RELOC_64_PCREL; | |
7178 | break; | |
7179 | default: | |
7180 | goto fail; | |
7181 | } | |
7182 | ||
7183 | howto = bfd_reloc_type_lookup (abfd, code); | |
7184 | ||
7185 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7186 | { | |
7187 | if (howto->pcrel_offset) | |
7188 | areloc->addend += areloc->address; | |
7189 | else | |
7190 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7191 | } | |
7192 | } | |
7193 | else | |
7194 | { | |
7195 | switch (areloc->howto->bitsize) | |
7196 | { | |
7197 | case 8: | |
7198 | code = BFD_RELOC_8; | |
7199 | break; | |
7200 | case 14: | |
7201 | code = BFD_RELOC_14; | |
7202 | break; | |
7203 | case 16: | |
7204 | code = BFD_RELOC_16; | |
7205 | break; | |
7206 | case 26: | |
7207 | code = BFD_RELOC_26; | |
7208 | break; | |
7209 | case 32: | |
7210 | code = BFD_RELOC_32; | |
7211 | break; | |
7212 | case 64: | |
7213 | code = BFD_RELOC_64; | |
7214 | break; | |
7215 | default: | |
7216 | goto fail; | |
7217 | } | |
7218 | ||
7219 | howto = bfd_reloc_type_lookup (abfd, code); | |
7220 | } | |
7221 | ||
7222 | if (howto) | |
7223 | areloc->howto = howto; | |
7224 | else | |
7225 | goto fail; | |
7226 | } | |
7227 | ||
b34976b6 | 7228 | return TRUE; |
252b5132 RH |
7229 | |
7230 | fail: | |
7231 | (*_bfd_error_handler) | |
d003868e AM |
7232 | (_("%B: unsupported relocation type %s"), |
7233 | abfd, areloc->howto->name); | |
252b5132 | 7234 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7235 | return FALSE; |
252b5132 RH |
7236 | } |
7237 | ||
b34976b6 | 7238 | bfd_boolean |
217aa764 | 7239 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7240 | { |
7241 | if (bfd_get_format (abfd) == bfd_object) | |
7242 | { | |
b25e3d87 | 7243 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7244 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7245 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7246 | } |
7247 | ||
7248 | return _bfd_generic_close_and_cleanup (abfd); | |
7249 | } | |
7250 | ||
7251 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7252 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7253 | range-checking to interfere. There is nothing else to do in processing | |
7254 | this reloc. */ | |
7255 | ||
7256 | bfd_reloc_status_type | |
217aa764 AM |
7257 | _bfd_elf_rel_vtable_reloc_fn |
7258 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7259 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7260 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7261 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7262 | { |
7263 | return bfd_reloc_ok; | |
7264 | } | |
252b5132 RH |
7265 | \f |
7266 | /* Elf core file support. Much of this only works on native | |
7267 | toolchains, since we rely on knowing the | |
7268 | machine-dependent procfs structure in order to pick | |
c044fabd | 7269 | out details about the corefile. */ |
252b5132 RH |
7270 | |
7271 | #ifdef HAVE_SYS_PROCFS_H | |
7272 | # include <sys/procfs.h> | |
7273 | #endif | |
7274 | ||
c044fabd | 7275 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7276 | |
7277 | static int | |
217aa764 | 7278 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7279 | { |
7280 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7281 | + (elf_tdata (abfd)->core_pid)); | |
7282 | } | |
7283 | ||
252b5132 RH |
7284 | /* If there isn't a section called NAME, make one, using |
7285 | data from SECT. Note, this function will generate a | |
7286 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7287 | overwrite it. */ |
252b5132 | 7288 | |
b34976b6 | 7289 | static bfd_boolean |
217aa764 | 7290 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7291 | { |
c044fabd | 7292 | asection *sect2; |
252b5132 RH |
7293 | |
7294 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7295 | return TRUE; |
252b5132 | 7296 | |
117ed4f8 | 7297 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7298 | if (sect2 == NULL) |
b34976b6 | 7299 | return FALSE; |
252b5132 | 7300 | |
eea6121a | 7301 | sect2->size = sect->size; |
252b5132 | 7302 | sect2->filepos = sect->filepos; |
252b5132 | 7303 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7304 | return TRUE; |
252b5132 RH |
7305 | } |
7306 | ||
bb0082d6 AM |
7307 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7308 | actually creates up to two pseudosections: | |
7309 | - For the single-threaded case, a section named NAME, unless | |
7310 | such a section already exists. | |
7311 | - For the multi-threaded case, a section named "NAME/PID", where | |
7312 | PID is elfcore_make_pid (abfd). | |
7313 | Both pseudosections have identical contents. */ | |
b34976b6 | 7314 | bfd_boolean |
217aa764 AM |
7315 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7316 | char *name, | |
7317 | size_t size, | |
7318 | ufile_ptr filepos) | |
bb0082d6 AM |
7319 | { |
7320 | char buf[100]; | |
7321 | char *threaded_name; | |
d4c88bbb | 7322 | size_t len; |
bb0082d6 AM |
7323 | asection *sect; |
7324 | ||
7325 | /* Build the section name. */ | |
7326 | ||
7327 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7328 | len = strlen (buf) + 1; |
217aa764 | 7329 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7330 | if (threaded_name == NULL) |
b34976b6 | 7331 | return FALSE; |
d4c88bbb | 7332 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7333 | |
117ed4f8 AM |
7334 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7335 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7336 | if (sect == NULL) |
b34976b6 | 7337 | return FALSE; |
eea6121a | 7338 | sect->size = size; |
bb0082d6 | 7339 | sect->filepos = filepos; |
bb0082d6 AM |
7340 | sect->alignment_power = 2; |
7341 | ||
936e320b | 7342 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7343 | } |
7344 | ||
252b5132 | 7345 | /* prstatus_t exists on: |
4a938328 | 7346 | solaris 2.5+ |
252b5132 RH |
7347 | linux 2.[01] + glibc |
7348 | unixware 4.2 | |
7349 | */ | |
7350 | ||
7351 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7352 | |
b34976b6 | 7353 | static bfd_boolean |
217aa764 | 7354 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7355 | { |
eea6121a | 7356 | size_t size; |
7ee38065 | 7357 | int offset; |
252b5132 | 7358 | |
4a938328 MS |
7359 | if (note->descsz == sizeof (prstatus_t)) |
7360 | { | |
7361 | prstatus_t prstat; | |
252b5132 | 7362 | |
eea6121a | 7363 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7364 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7365 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7366 | |
fa49d224 NC |
7367 | /* Do not overwrite the core signal if it |
7368 | has already been set by another thread. */ | |
7369 | if (elf_tdata (abfd)->core_signal == 0) | |
7370 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7371 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7372 | |
4a938328 MS |
7373 | /* pr_who exists on: |
7374 | solaris 2.5+ | |
7375 | unixware 4.2 | |
7376 | pr_who doesn't exist on: | |
7377 | linux 2.[01] | |
7378 | */ | |
252b5132 | 7379 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7380 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7381 | #endif |
4a938328 | 7382 | } |
7ee38065 | 7383 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7384 | else if (note->descsz == sizeof (prstatus32_t)) |
7385 | { | |
7386 | /* 64-bit host, 32-bit corefile */ | |
7387 | prstatus32_t prstat; | |
7388 | ||
eea6121a | 7389 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7390 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7391 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7392 | ||
fa49d224 NC |
7393 | /* Do not overwrite the core signal if it |
7394 | has already been set by another thread. */ | |
7395 | if (elf_tdata (abfd)->core_signal == 0) | |
7396 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7397 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7398 | ||
7399 | /* pr_who exists on: | |
7400 | solaris 2.5+ | |
7401 | unixware 4.2 | |
7402 | pr_who doesn't exist on: | |
7403 | linux 2.[01] | |
7404 | */ | |
7ee38065 | 7405 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7406 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7407 | #endif | |
7408 | } | |
7ee38065 | 7409 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7410 | else |
7411 | { | |
7412 | /* Fail - we don't know how to handle any other | |
7413 | note size (ie. data object type). */ | |
b34976b6 | 7414 | return TRUE; |
4a938328 | 7415 | } |
252b5132 | 7416 | |
bb0082d6 | 7417 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7418 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7419 | size, note->descpos + offset); |
252b5132 RH |
7420 | } |
7421 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7422 | ||
bb0082d6 | 7423 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7424 | static bfd_boolean |
217aa764 AM |
7425 | elfcore_make_note_pseudosection (bfd *abfd, |
7426 | char *name, | |
7427 | Elf_Internal_Note *note) | |
252b5132 | 7428 | { |
936e320b AM |
7429 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7430 | note->descsz, note->descpos); | |
252b5132 RH |
7431 | } |
7432 | ||
ff08c6bb JB |
7433 | /* There isn't a consistent prfpregset_t across platforms, |
7434 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7435 | data structure apart. */ |
7436 | ||
b34976b6 | 7437 | static bfd_boolean |
217aa764 | 7438 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7439 | { |
7440 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7441 | } | |
7442 | ||
ff08c6bb JB |
7443 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7444 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7445 | literally. */ | |
c044fabd | 7446 | |
b34976b6 | 7447 | static bfd_boolean |
217aa764 | 7448 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7449 | { |
7450 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7451 | } | |
7452 | ||
252b5132 | 7453 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7454 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7455 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7456 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7457 | #endif | |
252b5132 RH |
7458 | #endif |
7459 | ||
7460 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7461 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7462 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7463 | typedef psinfo32_t elfcore_psinfo32_t; |
7464 | #endif | |
252b5132 RH |
7465 | #endif |
7466 | ||
252b5132 RH |
7467 | /* return a malloc'ed copy of a string at START which is at |
7468 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7469 | the copy will always have a terminating '\0'. */ |
252b5132 | 7470 | |
936e320b | 7471 | char * |
217aa764 | 7472 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7473 | { |
dc810e39 | 7474 | char *dups; |
c044fabd | 7475 | char *end = memchr (start, '\0', max); |
dc810e39 | 7476 | size_t len; |
252b5132 RH |
7477 | |
7478 | if (end == NULL) | |
7479 | len = max; | |
7480 | else | |
7481 | len = end - start; | |
7482 | ||
217aa764 | 7483 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7484 | if (dups == NULL) |
252b5132 RH |
7485 | return NULL; |
7486 | ||
dc810e39 AM |
7487 | memcpy (dups, start, len); |
7488 | dups[len] = '\0'; | |
252b5132 | 7489 | |
dc810e39 | 7490 | return dups; |
252b5132 RH |
7491 | } |
7492 | ||
bb0082d6 | 7493 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7494 | static bfd_boolean |
217aa764 | 7495 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7496 | { |
4a938328 MS |
7497 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7498 | { | |
7499 | elfcore_psinfo_t psinfo; | |
252b5132 | 7500 | |
7ee38065 | 7501 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7502 | |
4a938328 | 7503 | elf_tdata (abfd)->core_program |
936e320b AM |
7504 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7505 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7506 | |
4a938328 | 7507 | elf_tdata (abfd)->core_command |
936e320b AM |
7508 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7509 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7510 | } |
7ee38065 | 7511 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7512 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7513 | { | |
7514 | /* 64-bit host, 32-bit corefile */ | |
7515 | elfcore_psinfo32_t psinfo; | |
7516 | ||
7ee38065 | 7517 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7518 | |
4a938328 | 7519 | elf_tdata (abfd)->core_program |
936e320b AM |
7520 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7521 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7522 | |
7523 | elf_tdata (abfd)->core_command | |
936e320b AM |
7524 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7525 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7526 | } |
7527 | #endif | |
7528 | ||
7529 | else | |
7530 | { | |
7531 | /* Fail - we don't know how to handle any other | |
7532 | note size (ie. data object type). */ | |
b34976b6 | 7533 | return TRUE; |
4a938328 | 7534 | } |
252b5132 RH |
7535 | |
7536 | /* Note that for some reason, a spurious space is tacked | |
7537 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7538 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7539 | |
7540 | { | |
c044fabd | 7541 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7542 | int n = strlen (command); |
7543 | ||
7544 | if (0 < n && command[n - 1] == ' ') | |
7545 | command[n - 1] = '\0'; | |
7546 | } | |
7547 | ||
b34976b6 | 7548 | return TRUE; |
252b5132 RH |
7549 | } |
7550 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7551 | ||
252b5132 | 7552 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7553 | static bfd_boolean |
217aa764 | 7554 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7555 | { |
f572a39d AM |
7556 | if (note->descsz == sizeof (pstatus_t) |
7557 | #if defined (HAVE_PXSTATUS_T) | |
7558 | || note->descsz == sizeof (pxstatus_t) | |
7559 | #endif | |
7560 | ) | |
4a938328 MS |
7561 | { |
7562 | pstatus_t pstat; | |
252b5132 | 7563 | |
4a938328 | 7564 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7565 | |
4a938328 MS |
7566 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7567 | } | |
7ee38065 | 7568 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7569 | else if (note->descsz == sizeof (pstatus32_t)) |
7570 | { | |
7571 | /* 64-bit host, 32-bit corefile */ | |
7572 | pstatus32_t pstat; | |
252b5132 | 7573 | |
4a938328 | 7574 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7575 | |
4a938328 MS |
7576 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7577 | } | |
7578 | #endif | |
252b5132 RH |
7579 | /* Could grab some more details from the "representative" |
7580 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7581 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7582 | |
b34976b6 | 7583 | return TRUE; |
252b5132 RH |
7584 | } |
7585 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7586 | ||
252b5132 | 7587 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7588 | static bfd_boolean |
217aa764 | 7589 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7590 | { |
7591 | lwpstatus_t lwpstat; | |
7592 | char buf[100]; | |
c044fabd | 7593 | char *name; |
d4c88bbb | 7594 | size_t len; |
c044fabd | 7595 | asection *sect; |
252b5132 | 7596 | |
f572a39d AM |
7597 | if (note->descsz != sizeof (lwpstat) |
7598 | #if defined (HAVE_LWPXSTATUS_T) | |
7599 | && note->descsz != sizeof (lwpxstatus_t) | |
7600 | #endif | |
7601 | ) | |
b34976b6 | 7602 | return TRUE; |
252b5132 RH |
7603 | |
7604 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7605 | ||
7606 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7607 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7608 | ||
c044fabd | 7609 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7610 | |
7611 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7612 | len = strlen (buf) + 1; |
217aa764 | 7613 | name = bfd_alloc (abfd, len); |
252b5132 | 7614 | if (name == NULL) |
b34976b6 | 7615 | return FALSE; |
d4c88bbb | 7616 | memcpy (name, buf, len); |
252b5132 | 7617 | |
117ed4f8 | 7618 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7619 | if (sect == NULL) |
b34976b6 | 7620 | return FALSE; |
252b5132 RH |
7621 | |
7622 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7623 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7624 | sect->filepos = note->descpos |
7625 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7626 | #endif | |
7627 | ||
7628 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7629 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7630 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7631 | #endif | |
7632 | ||
252b5132 RH |
7633 | sect->alignment_power = 2; |
7634 | ||
7635 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7636 | return FALSE; |
252b5132 RH |
7637 | |
7638 | /* Make a ".reg2/999" section */ | |
7639 | ||
7640 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7641 | len = strlen (buf) + 1; |
217aa764 | 7642 | name = bfd_alloc (abfd, len); |
252b5132 | 7643 | if (name == NULL) |
b34976b6 | 7644 | return FALSE; |
d4c88bbb | 7645 | memcpy (name, buf, len); |
252b5132 | 7646 | |
117ed4f8 | 7647 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7648 | if (sect == NULL) |
b34976b6 | 7649 | return FALSE; |
252b5132 RH |
7650 | |
7651 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7652 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7653 | sect->filepos = note->descpos |
7654 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7655 | #endif | |
7656 | ||
7657 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7658 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7659 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7660 | #endif | |
7661 | ||
252b5132 RH |
7662 | sect->alignment_power = 2; |
7663 | ||
936e320b | 7664 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7665 | } |
7666 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7667 | ||
16e9c715 | 7668 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7669 | static bfd_boolean |
217aa764 | 7670 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7671 | { |
7672 | char buf[30]; | |
c044fabd | 7673 | char *name; |
d4c88bbb | 7674 | size_t len; |
c044fabd | 7675 | asection *sect; |
16e9c715 NC |
7676 | win32_pstatus_t pstatus; |
7677 | ||
7678 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7679 | return TRUE; |
16e9c715 | 7680 | |
e8eab623 | 7681 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7682 | |
7683 | switch (pstatus.data_type) | |
16e9c715 NC |
7684 | { |
7685 | case NOTE_INFO_PROCESS: | |
7686 | /* FIXME: need to add ->core_command. */ | |
7687 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7688 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7689 | break; |
16e9c715 NC |
7690 | |
7691 | case NOTE_INFO_THREAD: | |
7692 | /* Make a ".reg/999" section. */ | |
1f170678 | 7693 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7694 | |
d4c88bbb | 7695 | len = strlen (buf) + 1; |
217aa764 | 7696 | name = bfd_alloc (abfd, len); |
16e9c715 | 7697 | if (name == NULL) |
b34976b6 | 7698 | return FALSE; |
c044fabd | 7699 | |
d4c88bbb | 7700 | memcpy (name, buf, len); |
16e9c715 | 7701 | |
117ed4f8 | 7702 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7703 | if (sect == NULL) |
b34976b6 | 7704 | return FALSE; |
c044fabd | 7705 | |
eea6121a | 7706 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7707 | sect->filepos = (note->descpos |
7708 | + offsetof (struct win32_pstatus, | |
7709 | data.thread_info.thread_context)); | |
16e9c715 NC |
7710 | sect->alignment_power = 2; |
7711 | ||
7712 | if (pstatus.data.thread_info.is_active_thread) | |
7713 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7714 | return FALSE; |
16e9c715 NC |
7715 | break; |
7716 | ||
7717 | case NOTE_INFO_MODULE: | |
7718 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7719 | sprintf (buf, ".module/%08lx", |
7720 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7721 | |
d4c88bbb | 7722 | len = strlen (buf) + 1; |
217aa764 | 7723 | name = bfd_alloc (abfd, len); |
16e9c715 | 7724 | if (name == NULL) |
b34976b6 | 7725 | return FALSE; |
c044fabd | 7726 | |
d4c88bbb | 7727 | memcpy (name, buf, len); |
252b5132 | 7728 | |
117ed4f8 | 7729 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7730 | |
16e9c715 | 7731 | if (sect == NULL) |
b34976b6 | 7732 | return FALSE; |
c044fabd | 7733 | |
eea6121a | 7734 | sect->size = note->descsz; |
16e9c715 | 7735 | sect->filepos = note->descpos; |
16e9c715 NC |
7736 | sect->alignment_power = 2; |
7737 | break; | |
7738 | ||
7739 | default: | |
b34976b6 | 7740 | return TRUE; |
16e9c715 NC |
7741 | } |
7742 | ||
b34976b6 | 7743 | return TRUE; |
16e9c715 NC |
7744 | } |
7745 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7746 | |
b34976b6 | 7747 | static bfd_boolean |
217aa764 | 7748 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7749 | { |
9c5bfbb7 | 7750 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7751 | |
252b5132 RH |
7752 | switch (note->type) |
7753 | { | |
7754 | default: | |
b34976b6 | 7755 | return TRUE; |
252b5132 | 7756 | |
252b5132 | 7757 | case NT_PRSTATUS: |
bb0082d6 AM |
7758 | if (bed->elf_backend_grok_prstatus) |
7759 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7760 | return TRUE; |
bb0082d6 | 7761 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7762 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7763 | #else |
b34976b6 | 7764 | return TRUE; |
252b5132 RH |
7765 | #endif |
7766 | ||
7767 | #if defined (HAVE_PSTATUS_T) | |
7768 | case NT_PSTATUS: | |
7769 | return elfcore_grok_pstatus (abfd, note); | |
7770 | #endif | |
7771 | ||
7772 | #if defined (HAVE_LWPSTATUS_T) | |
7773 | case NT_LWPSTATUS: | |
7774 | return elfcore_grok_lwpstatus (abfd, note); | |
7775 | #endif | |
7776 | ||
7777 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7778 | return elfcore_grok_prfpreg (abfd, note); | |
7779 | ||
16e9c715 | 7780 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7781 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7782 | return elfcore_grok_win32pstatus (abfd, note); |
7783 | #endif | |
7784 | ||
c044fabd | 7785 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7786 | if (note->namesz == 6 |
7787 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7788 | return elfcore_grok_prxfpreg (abfd, note); |
7789 | else | |
b34976b6 | 7790 | return TRUE; |
ff08c6bb | 7791 | |
252b5132 RH |
7792 | case NT_PRPSINFO: |
7793 | case NT_PSINFO: | |
bb0082d6 AM |
7794 | if (bed->elf_backend_grok_psinfo) |
7795 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7796 | return TRUE; |
bb0082d6 | 7797 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7798 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7799 | #else |
b34976b6 | 7800 | return TRUE; |
252b5132 | 7801 | #endif |
3333a7c3 RM |
7802 | |
7803 | case NT_AUXV: | |
7804 | { | |
117ed4f8 AM |
7805 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7806 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7807 | |
7808 | if (sect == NULL) | |
7809 | return FALSE; | |
eea6121a | 7810 | sect->size = note->descsz; |
3333a7c3 | 7811 | sect->filepos = note->descpos; |
3333a7c3 RM |
7812 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7813 | ||
7814 | return TRUE; | |
7815 | } | |
252b5132 RH |
7816 | } |
7817 | } | |
7818 | ||
b34976b6 | 7819 | static bfd_boolean |
217aa764 | 7820 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7821 | { |
7822 | char *cp; | |
7823 | ||
7824 | cp = strchr (note->namedata, '@'); | |
7825 | if (cp != NULL) | |
7826 | { | |
d2b64500 | 7827 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7828 | return TRUE; |
50b2bdb7 | 7829 | } |
b34976b6 | 7830 | return FALSE; |
50b2bdb7 AM |
7831 | } |
7832 | ||
b34976b6 | 7833 | static bfd_boolean |
217aa764 | 7834 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7835 | { |
7836 | ||
7837 | /* Signal number at offset 0x08. */ | |
7838 | elf_tdata (abfd)->core_signal | |
7839 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7840 | ||
7841 | /* Process ID at offset 0x50. */ | |
7842 | elf_tdata (abfd)->core_pid | |
7843 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7844 | ||
7845 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7846 | elf_tdata (abfd)->core_command | |
7847 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7848 | ||
7720ba9f MK |
7849 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7850 | note); | |
50b2bdb7 AM |
7851 | } |
7852 | ||
b34976b6 | 7853 | static bfd_boolean |
217aa764 | 7854 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7855 | { |
7856 | int lwp; | |
7857 | ||
7858 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7859 | elf_tdata (abfd)->core_lwpid = lwp; | |
7860 | ||
b4db1224 | 7861 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7862 | { |
7863 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7864 | find this note before any of the others, which is fine, | |
7865 | since the kernel writes this note out first when it | |
7866 | creates a core file. */ | |
47d9a591 | 7867 | |
50b2bdb7 AM |
7868 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7869 | } | |
7870 | ||
b4db1224 JT |
7871 | /* As of Jan 2002 there are no other machine-independent notes |
7872 | defined for NetBSD core files. If the note type is less | |
7873 | than the start of the machine-dependent note types, we don't | |
7874 | understand it. */ | |
47d9a591 | 7875 | |
b4db1224 | 7876 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7877 | return TRUE; |
50b2bdb7 AM |
7878 | |
7879 | ||
7880 | switch (bfd_get_arch (abfd)) | |
7881 | { | |
7882 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7883 | PT_GETFPREGS == mach+2. */ | |
7884 | ||
7885 | case bfd_arch_alpha: | |
7886 | case bfd_arch_sparc: | |
7887 | switch (note->type) | |
7888 | { | |
b4db1224 | 7889 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7890 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7891 | ||
b4db1224 | 7892 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7893 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7894 | ||
7895 | default: | |
b34976b6 | 7896 | return TRUE; |
50b2bdb7 AM |
7897 | } |
7898 | ||
7899 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7900 | PT_GETFPREGS == mach+3. */ | |
7901 | ||
7902 | default: | |
7903 | switch (note->type) | |
7904 | { | |
b4db1224 | 7905 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7906 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7907 | ||
b4db1224 | 7908 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7909 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7910 | ||
7911 | default: | |
b34976b6 | 7912 | return TRUE; |
50b2bdb7 AM |
7913 | } |
7914 | } | |
7915 | /* NOTREACHED */ | |
7916 | } | |
7917 | ||
07c6e936 | 7918 | static bfd_boolean |
d3fd4074 | 7919 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
7920 | { |
7921 | void *ddata = note->descdata; | |
7922 | char buf[100]; | |
7923 | char *name; | |
7924 | asection *sect; | |
f8843e87 AM |
7925 | short sig; |
7926 | unsigned flags; | |
07c6e936 NC |
7927 | |
7928 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7929 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7930 | ||
f8843e87 AM |
7931 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7932 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7933 | ||
7934 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7935 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7936 | |
7937 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7938 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7939 | { | |
7940 | elf_tdata (abfd)->core_signal = sig; | |
7941 | elf_tdata (abfd)->core_lwpid = *tid; | |
7942 | } | |
07c6e936 | 7943 | |
f8843e87 AM |
7944 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7945 | do not come from signals so we make sure we set the current | |
7946 | thread just in case. */ | |
7947 | if (flags & 0x00000080) | |
7948 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7949 | |
7950 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 7951 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 7952 | |
217aa764 | 7953 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7954 | if (name == NULL) |
7955 | return FALSE; | |
7956 | strcpy (name, buf); | |
7957 | ||
117ed4f8 | 7958 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
7959 | if (sect == NULL) |
7960 | return FALSE; | |
7961 | ||
eea6121a | 7962 | sect->size = note->descsz; |
07c6e936 | 7963 | sect->filepos = note->descpos; |
07c6e936 NC |
7964 | sect->alignment_power = 2; |
7965 | ||
7966 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7967 | } | |
7968 | ||
7969 | static bfd_boolean | |
d69f560c KW |
7970 | elfcore_grok_nto_regs (bfd *abfd, |
7971 | Elf_Internal_Note *note, | |
d3fd4074 | 7972 | long tid, |
d69f560c | 7973 | char *base) |
07c6e936 NC |
7974 | { |
7975 | char buf[100]; | |
7976 | char *name; | |
7977 | asection *sect; | |
7978 | ||
d69f560c | 7979 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 7980 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 7981 | |
217aa764 | 7982 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7983 | if (name == NULL) |
7984 | return FALSE; | |
7985 | strcpy (name, buf); | |
7986 | ||
117ed4f8 | 7987 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
7988 | if (sect == NULL) |
7989 | return FALSE; | |
7990 | ||
eea6121a | 7991 | sect->size = note->descsz; |
07c6e936 | 7992 | sect->filepos = note->descpos; |
07c6e936 NC |
7993 | sect->alignment_power = 2; |
7994 | ||
f8843e87 AM |
7995 | /* This is the current thread. */ |
7996 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7997 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7998 | |
7999 | return TRUE; | |
07c6e936 NC |
8000 | } |
8001 | ||
8002 | #define BFD_QNT_CORE_INFO 7 | |
8003 | #define BFD_QNT_CORE_STATUS 8 | |
8004 | #define BFD_QNT_CORE_GREG 9 | |
8005 | #define BFD_QNT_CORE_FPREG 10 | |
8006 | ||
8007 | static bfd_boolean | |
217aa764 | 8008 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8009 | { |
8010 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8011 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8012 | function. */ |
d3fd4074 | 8013 | static long tid = 1; |
07c6e936 NC |
8014 | |
8015 | switch (note->type) | |
8016 | { | |
d69f560c KW |
8017 | case BFD_QNT_CORE_INFO: |
8018 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8019 | case BFD_QNT_CORE_STATUS: | |
8020 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8021 | case BFD_QNT_CORE_GREG: | |
8022 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8023 | case BFD_QNT_CORE_FPREG: | |
8024 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8025 | default: | |
8026 | return TRUE; | |
07c6e936 NC |
8027 | } |
8028 | } | |
8029 | ||
7c76fa91 MS |
8030 | /* Function: elfcore_write_note |
8031 | ||
47d9a591 | 8032 | Inputs: |
7c76fa91 MS |
8033 | buffer to hold note |
8034 | name of note | |
8035 | type of note | |
8036 | data for note | |
8037 | size of data for note | |
8038 | ||
8039 | Return: | |
8040 | End of buffer containing note. */ | |
8041 | ||
8042 | char * | |
217aa764 AM |
8043 | elfcore_write_note (bfd *abfd, |
8044 | char *buf, | |
8045 | int *bufsiz, | |
8046 | const char *name, | |
8047 | int type, | |
8048 | const void *input, | |
8049 | int size) | |
7c76fa91 MS |
8050 | { |
8051 | Elf_External_Note *xnp; | |
d4c88bbb AM |
8052 | size_t namesz; |
8053 | size_t pad; | |
8054 | size_t newspace; | |
7c76fa91 MS |
8055 | char *p, *dest; |
8056 | ||
d4c88bbb AM |
8057 | namesz = 0; |
8058 | pad = 0; | |
8059 | if (name != NULL) | |
8060 | { | |
9c5bfbb7 | 8061 | const struct elf_backend_data *bed; |
d4c88bbb AM |
8062 | |
8063 | namesz = strlen (name) + 1; | |
8064 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 8065 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
8066 | } |
8067 | ||
5de3bf90 | 8068 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 8069 | |
7c76fa91 MS |
8070 | p = realloc (buf, *bufsiz + newspace); |
8071 | dest = p + *bufsiz; | |
8072 | *bufsiz += newspace; | |
8073 | xnp = (Elf_External_Note *) dest; | |
8074 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8075 | H_PUT_32 (abfd, size, xnp->descsz); | |
8076 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8077 | dest = xnp->name; |
8078 | if (name != NULL) | |
8079 | { | |
8080 | memcpy (dest, name, namesz); | |
8081 | dest += namesz; | |
8082 | while (pad != 0) | |
8083 | { | |
8084 | *dest++ = '\0'; | |
8085 | --pad; | |
8086 | } | |
8087 | } | |
8088 | memcpy (dest, input, size); | |
7c76fa91 MS |
8089 | return p; |
8090 | } | |
8091 | ||
8092 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8093 | char * | |
217aa764 AM |
8094 | elfcore_write_prpsinfo (bfd *abfd, |
8095 | char *buf, | |
8096 | int *bufsiz, | |
8097 | const char *fname, | |
8098 | const char *psargs) | |
7c76fa91 MS |
8099 | { |
8100 | int note_type; | |
8101 | char *note_name = "CORE"; | |
8102 | ||
8103 | #if defined (HAVE_PSINFO_T) | |
8104 | psinfo_t data; | |
8105 | note_type = NT_PSINFO; | |
8106 | #else | |
8107 | prpsinfo_t data; | |
8108 | note_type = NT_PRPSINFO; | |
8109 | #endif | |
8110 | ||
8111 | memset (&data, 0, sizeof (data)); | |
8112 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8113 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 8114 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8115 | note_name, note_type, &data, sizeof (data)); |
8116 | } | |
8117 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8118 | ||
8119 | #if defined (HAVE_PRSTATUS_T) | |
8120 | char * | |
217aa764 AM |
8121 | elfcore_write_prstatus (bfd *abfd, |
8122 | char *buf, | |
8123 | int *bufsiz, | |
8124 | long pid, | |
8125 | int cursig, | |
8126 | const void *gregs) | |
7c76fa91 MS |
8127 | { |
8128 | prstatus_t prstat; | |
8129 | char *note_name = "CORE"; | |
8130 | ||
8131 | memset (&prstat, 0, sizeof (prstat)); | |
8132 | prstat.pr_pid = pid; | |
8133 | prstat.pr_cursig = cursig; | |
c106e334 | 8134 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 8135 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8136 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
8137 | } | |
8138 | #endif /* HAVE_PRSTATUS_T */ | |
8139 | ||
51316059 MS |
8140 | #if defined (HAVE_LWPSTATUS_T) |
8141 | char * | |
217aa764 AM |
8142 | elfcore_write_lwpstatus (bfd *abfd, |
8143 | char *buf, | |
8144 | int *bufsiz, | |
8145 | long pid, | |
8146 | int cursig, | |
8147 | const void *gregs) | |
51316059 MS |
8148 | { |
8149 | lwpstatus_t lwpstat; | |
8150 | char *note_name = "CORE"; | |
8151 | ||
8152 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8153 | lwpstat.pr_lwpid = pid >> 16; | |
8154 | lwpstat.pr_cursig = cursig; | |
8155 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8156 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8157 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8158 | #if !defined(gregs) | |
8159 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8160 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8161 | #else | |
8162 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8163 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8164 | #endif | |
8165 | #endif | |
47d9a591 | 8166 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8167 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8168 | } | |
8169 | #endif /* HAVE_LWPSTATUS_T */ | |
8170 | ||
7c76fa91 MS |
8171 | #if defined (HAVE_PSTATUS_T) |
8172 | char * | |
217aa764 AM |
8173 | elfcore_write_pstatus (bfd *abfd, |
8174 | char *buf, | |
8175 | int *bufsiz, | |
8176 | long pid, | |
6c10990d NC |
8177 | int cursig ATTRIBUTE_UNUSED, |
8178 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 MS |
8179 | { |
8180 | pstatus_t pstat; | |
8181 | char *note_name = "CORE"; | |
8182 | ||
51316059 MS |
8183 | memset (&pstat, 0, sizeof (pstat)); |
8184 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 8185 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8186 | NT_PSTATUS, &pstat, sizeof (pstat)); |
8187 | return buf; | |
7c76fa91 MS |
8188 | } |
8189 | #endif /* HAVE_PSTATUS_T */ | |
8190 | ||
8191 | char * | |
217aa764 AM |
8192 | elfcore_write_prfpreg (bfd *abfd, |
8193 | char *buf, | |
8194 | int *bufsiz, | |
8195 | const void *fpregs, | |
8196 | int size) | |
7c76fa91 MS |
8197 | { |
8198 | char *note_name = "CORE"; | |
47d9a591 | 8199 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8200 | note_name, NT_FPREGSET, fpregs, size); |
8201 | } | |
8202 | ||
8203 | char * | |
217aa764 AM |
8204 | elfcore_write_prxfpreg (bfd *abfd, |
8205 | char *buf, | |
8206 | int *bufsiz, | |
8207 | const void *xfpregs, | |
8208 | int size) | |
7c76fa91 MS |
8209 | { |
8210 | char *note_name = "LINUX"; | |
47d9a591 | 8211 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8212 | note_name, NT_PRXFPREG, xfpregs, size); |
8213 | } | |
8214 | ||
b34976b6 | 8215 | static bfd_boolean |
217aa764 | 8216 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 8217 | { |
c044fabd KH |
8218 | char *buf; |
8219 | char *p; | |
252b5132 RH |
8220 | |
8221 | if (size <= 0) | |
b34976b6 | 8222 | return TRUE; |
252b5132 | 8223 | |
dc810e39 | 8224 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 8225 | return FALSE; |
252b5132 | 8226 | |
dc810e39 | 8227 | buf = bfd_malloc (size); |
252b5132 | 8228 | if (buf == NULL) |
b34976b6 | 8229 | return FALSE; |
252b5132 | 8230 | |
dc810e39 | 8231 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
8232 | { |
8233 | error: | |
8234 | free (buf); | |
b34976b6 | 8235 | return FALSE; |
252b5132 RH |
8236 | } |
8237 | ||
8238 | p = buf; | |
8239 | while (p < buf + size) | |
8240 | { | |
c044fabd KH |
8241 | /* FIXME: bad alignment assumption. */ |
8242 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8243 | Elf_Internal_Note in; |
8244 | ||
dc810e39 | 8245 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8246 | |
dc810e39 | 8247 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8248 | in.namedata = xnp->name; |
8249 | ||
dc810e39 | 8250 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8251 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8252 | in.descpos = offset + (in.descdata - buf); | |
8253 | ||
50b2bdb7 AM |
8254 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
8255 | { | |
8256 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8257 | goto error; | |
8258 | } | |
07c6e936 NC |
8259 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
8260 | { | |
8261 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8262 | goto error; | |
8263 | } | |
50b2bdb7 AM |
8264 | else |
8265 | { | |
8266 | if (! elfcore_grok_note (abfd, &in)) | |
8267 | goto error; | |
8268 | } | |
252b5132 RH |
8269 | |
8270 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8271 | } | |
8272 | ||
8273 | free (buf); | |
b34976b6 | 8274 | return TRUE; |
252b5132 | 8275 | } |
98d8431c JB |
8276 | \f |
8277 | /* Providing external access to the ELF program header table. */ | |
8278 | ||
8279 | /* Return an upper bound on the number of bytes required to store a | |
8280 | copy of ABFD's program header table entries. Return -1 if an error | |
8281 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8282 | |
98d8431c | 8283 | long |
217aa764 | 8284 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8285 | { |
8286 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8287 | { | |
8288 | bfd_set_error (bfd_error_wrong_format); | |
8289 | return -1; | |
8290 | } | |
8291 | ||
936e320b | 8292 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8293 | } |
8294 | ||
98d8431c JB |
8295 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8296 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8297 | defined in include/elf/internal.h. To find out how large the | |
8298 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8299 | ||
8300 | Return the number of program header table entries read, or -1 if an | |
8301 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8302 | |
98d8431c | 8303 | int |
217aa764 | 8304 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8305 | { |
8306 | int num_phdrs; | |
8307 | ||
8308 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8309 | { | |
8310 | bfd_set_error (bfd_error_wrong_format); | |
8311 | return -1; | |
8312 | } | |
8313 | ||
8314 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8315 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8316 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8317 | ||
8318 | return num_phdrs; | |
8319 | } | |
ae4221d7 L |
8320 | |
8321 | void | |
217aa764 | 8322 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8323 | { |
d3b05f8d | 8324 | #ifdef BFD64 |
ae4221d7 L |
8325 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8326 | ||
8327 | i_ehdrp = elf_elfheader (abfd); | |
8328 | if (i_ehdrp == NULL) | |
8329 | sprintf_vma (buf, value); | |
8330 | else | |
8331 | { | |
8332 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8333 | { |
ae4221d7 | 8334 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8335 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8336 | #else |
cc55aec9 AM |
8337 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8338 | _bfd_int64_low (value)); | |
ae4221d7 | 8339 | #endif |
cc55aec9 | 8340 | } |
ae4221d7 L |
8341 | else |
8342 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8343 | } | |
d3b05f8d L |
8344 | #else |
8345 | sprintf_vma (buf, value); | |
8346 | #endif | |
ae4221d7 L |
8347 | } |
8348 | ||
8349 | void | |
217aa764 | 8350 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8351 | { |
d3b05f8d | 8352 | #ifdef BFD64 |
ae4221d7 L |
8353 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8354 | ||
8355 | i_ehdrp = elf_elfheader (abfd); | |
8356 | if (i_ehdrp == NULL) | |
8357 | fprintf_vma ((FILE *) stream, value); | |
8358 | else | |
8359 | { | |
8360 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8361 | { |
ae4221d7 | 8362 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8363 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8364 | #else |
cc55aec9 AM |
8365 | fprintf ((FILE *) stream, "%08lx%08lx", |
8366 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8367 | #endif |
cc55aec9 | 8368 | } |
ae4221d7 L |
8369 | else |
8370 | fprintf ((FILE *) stream, "%08lx", | |
8371 | (unsigned long) (value & 0xffffffff)); | |
8372 | } | |
d3b05f8d L |
8373 | #else |
8374 | fprintf_vma ((FILE *) stream, value); | |
8375 | #endif | |
ae4221d7 | 8376 | } |
db6751f2 JJ |
8377 | |
8378 | enum elf_reloc_type_class | |
217aa764 | 8379 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8380 | { |
8381 | return reloc_class_normal; | |
8382 | } | |
f8df10f4 | 8383 | |
47d9a591 | 8384 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8385 | relocation against a local symbol. */ |
8386 | ||
8387 | bfd_vma | |
217aa764 AM |
8388 | _bfd_elf_rela_local_sym (bfd *abfd, |
8389 | Elf_Internal_Sym *sym, | |
8517fae7 | 8390 | asection **psec, |
217aa764 | 8391 | Elf_Internal_Rela *rel) |
f8df10f4 | 8392 | { |
8517fae7 | 8393 | asection *sec = *psec; |
f8df10f4 JJ |
8394 | bfd_vma relocation; |
8395 | ||
8396 | relocation = (sec->output_section->vma | |
8397 | + sec->output_offset | |
8398 | + sym->st_value); | |
8399 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8400 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8401 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8402 | { |
f8df10f4 | 8403 | rel->r_addend = |
8517fae7 | 8404 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8405 | elf_section_data (sec)->sec_info, |
753731ee AM |
8406 | sym->st_value + rel->r_addend); |
8407 | if (sec != *psec) | |
8408 | { | |
8409 | /* If we have changed the section, and our original section is | |
8410 | marked with SEC_EXCLUDE, it means that the original | |
8411 | SEC_MERGE section has been completely subsumed in some | |
8412 | other SEC_MERGE section. In this case, we need to leave | |
8413 | some info around for --emit-relocs. */ | |
8414 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8415 | sec->kept_section = *psec; | |
8416 | sec = *psec; | |
8417 | } | |
8517fae7 AM |
8418 | rel->r_addend -= relocation; |
8419 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8420 | } |
8421 | return relocation; | |
8422 | } | |
c629eae0 JJ |
8423 | |
8424 | bfd_vma | |
217aa764 AM |
8425 | _bfd_elf_rel_local_sym (bfd *abfd, |
8426 | Elf_Internal_Sym *sym, | |
8427 | asection **psec, | |
8428 | bfd_vma addend) | |
47d9a591 | 8429 | { |
c629eae0 JJ |
8430 | asection *sec = *psec; |
8431 | ||
68bfbfcc | 8432 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8433 | return sym->st_value + addend; |
8434 | ||
8435 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8436 | elf_section_data (sec)->sec_info, |
753731ee | 8437 | sym->st_value + addend); |
c629eae0 JJ |
8438 | } |
8439 | ||
8440 | bfd_vma | |
217aa764 | 8441 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8442 | struct bfd_link_info *info, |
217aa764 AM |
8443 | asection *sec, |
8444 | bfd_vma offset) | |
c629eae0 | 8445 | { |
68bfbfcc | 8446 | switch (sec->sec_info_type) |
65765700 JJ |
8447 | { |
8448 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8449 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8450 | offset); | |
65765700 | 8451 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8452 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8453 | default: |
8454 | return offset; | |
8455 | } | |
c629eae0 | 8456 | } |
3333a7c3 RM |
8457 | \f |
8458 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8459 | reconstruct an ELF file by reading the segments out of remote memory | |
8460 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8461 | points to. If not null, *LOADBASEP is filled in with the difference | |
8462 | between the VMAs from which the segments were read, and the VMAs the | |
8463 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8464 | ||
8465 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8466 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8467 | should return zero on success or an `errno' code on failure. TEMPL must | |
8468 | be a BFD for an ELF target with the word size and byte order found in | |
8469 | the remote memory. */ | |
8470 | ||
8471 | bfd * | |
217aa764 AM |
8472 | bfd_elf_bfd_from_remote_memory |
8473 | (bfd *templ, | |
8474 | bfd_vma ehdr_vma, | |
8475 | bfd_vma *loadbasep, | |
f075ee0c | 8476 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8477 | { |
8478 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8479 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8480 | } | |
4c45e5c9 JJ |
8481 | \f |
8482 | long | |
c9727e01 AM |
8483 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8484 | long symcount ATTRIBUTE_UNUSED, | |
8485 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8486 | long dynsymcount, |
c9727e01 AM |
8487 | asymbol **dynsyms, |
8488 | asymbol **ret) | |
4c45e5c9 JJ |
8489 | { |
8490 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8491 | asection *relplt; | |
8492 | asymbol *s; | |
8493 | const char *relplt_name; | |
8494 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8495 | arelent *p; | |
8496 | long count, i, n; | |
8497 | size_t size; | |
8498 | Elf_Internal_Shdr *hdr; | |
8499 | char *names; | |
8500 | asection *plt; | |
8501 | ||
8615f3f2 AM |
8502 | *ret = NULL; |
8503 | ||
90e3cdf2 JJ |
8504 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8505 | return 0; | |
8506 | ||
8615f3f2 AM |
8507 | if (dynsymcount <= 0) |
8508 | return 0; | |
8509 | ||
4c45e5c9 JJ |
8510 | if (!bed->plt_sym_val) |
8511 | return 0; | |
8512 | ||
8513 | relplt_name = bed->relplt_name; | |
8514 | if (relplt_name == NULL) | |
8515 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8516 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8517 | if (relplt == NULL) | |
8518 | return 0; | |
8519 | ||
8520 | hdr = &elf_section_data (relplt)->this_hdr; | |
8521 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8522 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8523 | return 0; | |
8524 | ||
8525 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8526 | if (plt == NULL) | |
8527 | return 0; | |
8528 | ||
8529 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8530 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8531 | return -1; |
8532 | ||
eea6121a | 8533 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8534 | size = count * sizeof (asymbol); |
8535 | p = relplt->relocation; | |
8536 | for (i = 0; i < count; i++, s++, p++) | |
8537 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8538 | ||
8539 | s = *ret = bfd_malloc (size); | |
8540 | if (s == NULL) | |
8541 | return -1; | |
8542 | ||
8543 | names = (char *) (s + count); | |
8544 | p = relplt->relocation; | |
8545 | n = 0; | |
8546 | for (i = 0; i < count; i++, s++, p++) | |
8547 | { | |
8548 | size_t len; | |
8549 | bfd_vma addr; | |
8550 | ||
8551 | addr = bed->plt_sym_val (i, plt, p); | |
8552 | if (addr == (bfd_vma) -1) | |
8553 | continue; | |
8554 | ||
8555 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8556 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8557 | we are defining a symbol, ensure one of them is set. */ | |
8558 | if ((s->flags & BSF_LOCAL) == 0) | |
8559 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8560 | s->section = plt; |
8561 | s->value = addr - plt->vma; | |
8562 | s->name = names; | |
8563 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8564 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8565 | names += len; | |
8566 | memcpy (names, "@plt", sizeof ("@plt")); | |
8567 | names += sizeof ("@plt"); | |
8568 | ++n; | |
8569 | } | |
8570 | ||
8571 | return n; | |
8572 | } | |
3d7f7666 L |
8573 | |
8574 | /* Sort symbol by binding and section. We want to put definitions | |
8575 | sorted by section at the beginning. */ | |
8576 | ||
8577 | static int | |
8578 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8579 | { | |
8580 | const Elf_Internal_Sym *s1; | |
8581 | const Elf_Internal_Sym *s2; | |
8582 | int shndx; | |
8583 | ||
8584 | /* Make sure that undefined symbols are at the end. */ | |
8585 | s1 = (const Elf_Internal_Sym *) arg1; | |
8586 | if (s1->st_shndx == SHN_UNDEF) | |
8587 | return 1; | |
8588 | s2 = (const Elf_Internal_Sym *) arg2; | |
8589 | if (s2->st_shndx == SHN_UNDEF) | |
8590 | return -1; | |
8591 | ||
8592 | /* Sorted by section index. */ | |
8593 | shndx = s1->st_shndx - s2->st_shndx; | |
8594 | if (shndx != 0) | |
8595 | return shndx; | |
8596 | ||
8597 | /* Sorted by binding. */ | |
8598 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8599 | } | |
8600 | ||
8601 | struct elf_symbol | |
8602 | { | |
8603 | Elf_Internal_Sym *sym; | |
8604 | const char *name; | |
8605 | }; | |
8606 | ||
8607 | static int | |
8608 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8609 | { | |
8610 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8611 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8612 | return strcmp (s1->name, s2->name); | |
8613 | } | |
8614 | ||
8615 | /* Check if 2 sections define the same set of local and global | |
8616 | symbols. */ | |
8617 | ||
8618 | bfd_boolean | |
8619 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8620 | { | |
8621 | bfd *bfd1, *bfd2; | |
8622 | const struct elf_backend_data *bed1, *bed2; | |
8623 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8624 | bfd_size_type symcount1, symcount2; | |
8625 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8626 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8627 | Elf_Internal_Sym *isymend; | |
8628 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8629 | bfd_size_type count1, count2, i; | |
8630 | int shndx1, shndx2; | |
8631 | bfd_boolean result; | |
8632 | ||
8633 | bfd1 = sec1->owner; | |
8634 | bfd2 = sec2->owner; | |
8635 | ||
8636 | /* If both are .gnu.linkonce sections, they have to have the same | |
8637 | section name. */ | |
8638 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8639 | sizeof ".gnu.linkonce" - 1) == 0 | |
8640 | && strncmp (sec2->name, ".gnu.linkonce", | |
8641 | sizeof ".gnu.linkonce" - 1) == 0) | |
8642 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8643 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8644 | ||
8645 | /* Both sections have to be in ELF. */ | |
8646 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8647 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8648 | return FALSE; | |
8649 | ||
8650 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8651 | return FALSE; | |
8652 | ||
8653 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8654 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8655 | { | |
8656 | /* If both are members of section groups, they have to have the | |
8657 | same group name. */ | |
8658 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8659 | return FALSE; | |
8660 | } | |
8661 | ||
8662 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8663 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8664 | if (shndx1 == -1 || shndx2 == -1) | |
8665 | return FALSE; | |
8666 | ||
8667 | bed1 = get_elf_backend_data (bfd1); | |
8668 | bed2 = get_elf_backend_data (bfd2); | |
8669 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8670 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8671 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8672 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8673 | ||
8674 | if (symcount1 == 0 || symcount2 == 0) | |
8675 | return FALSE; | |
8676 | ||
8677 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8678 | NULL, NULL, NULL); | |
8679 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8680 | NULL, NULL, NULL); | |
8681 | ||
8682 | result = FALSE; | |
8683 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8684 | goto done; | |
8685 | ||
8686 | /* Sort symbols by binding and section. Global definitions are at | |
8687 | the beginning. */ | |
8688 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8689 | elf_sort_elf_symbol); | |
8690 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8691 | elf_sort_elf_symbol); | |
8692 | ||
8693 | /* Count definitions in the section. */ | |
8694 | count1 = 0; | |
8695 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8696 | isym < isymend; isym++) | |
8697 | { | |
8698 | if (isym->st_shndx == (unsigned int) shndx1) | |
8699 | { | |
8700 | if (count1 == 0) | |
8701 | isymstart1 = isym; | |
8702 | count1++; | |
8703 | } | |
8704 | ||
8705 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8706 | break; | |
8707 | } | |
8708 | ||
8709 | count2 = 0; | |
8710 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8711 | isym < isymend; isym++) | |
8712 | { | |
8713 | if (isym->st_shndx == (unsigned int) shndx2) | |
8714 | { | |
8715 | if (count2 == 0) | |
8716 | isymstart2 = isym; | |
8717 | count2++; | |
8718 | } | |
8719 | ||
8720 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8721 | break; | |
8722 | } | |
8723 | ||
8724 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8725 | goto done; | |
8726 | ||
8727 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8728 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8729 | ||
8730 | if (symtable1 == NULL || symtable2 == NULL) | |
8731 | goto done; | |
8732 | ||
8733 | symp = symtable1; | |
8734 | for (isym = isymstart1, isymend = isym + count1; | |
8735 | isym < isymend; isym++) | |
8736 | { | |
8737 | symp->sym = isym; | |
8738 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8739 | hdr1->sh_link, | |
8740 | isym->st_name); | |
8741 | symp++; | |
8742 | } | |
8743 | ||
8744 | symp = symtable2; | |
8745 | for (isym = isymstart2, isymend = isym + count1; | |
8746 | isym < isymend; isym++) | |
8747 | { | |
8748 | symp->sym = isym; | |
8749 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8750 | hdr2->sh_link, | |
8751 | isym->st_name); | |
8752 | symp++; | |
8753 | } | |
8754 | ||
8755 | /* Sort symbol by name. */ | |
8756 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8757 | elf_sym_name_compare); | |
8758 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8759 | elf_sym_name_compare); | |
8760 | ||
8761 | for (i = 0; i < count1; i++) | |
8762 | /* Two symbols must have the same binding, type and name. */ | |
8763 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8764 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8765 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8766 | goto done; | |
8767 | ||
8768 | result = TRUE; | |
8769 | ||
8770 | done: | |
8771 | if (symtable1) | |
8772 | free (symtable1); | |
8773 | if (symtable2) | |
8774 | free (symtable2); | |
8775 | if (isymbuf1) | |
8776 | free (isymbuf1); | |
8777 | if (isymbuf2) | |
8778 | free (isymbuf2); | |
8779 | ||
8780 | return result; | |
8781 | } | |
3b22753a L |
8782 | |
8783 | /* It is only used by x86-64 so far. */ | |
8784 | asection _bfd_elf_large_com_section | |
8785 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8786 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 L |
8787 | |
8788 | /* Return TRUE if 2 section types are compatible. */ | |
8789 | ||
8790 | bfd_boolean | |
8791 | _bfd_elf_match_sections_by_type (bfd *abfd, const asection *asec, | |
8792 | bfd *bbfd, const asection *bsec) | |
8793 | { | |
8794 | if (asec == NULL | |
8795 | || bsec == NULL | |
8796 | || abfd->xvec->flavour != bfd_target_elf_flavour | |
8797 | || bbfd->xvec->flavour != bfd_target_elf_flavour) | |
8798 | return TRUE; | |
8799 | ||
8800 | return elf_section_type (asec) == elf_section_type (bsec); | |
8801 | } |