Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
0e922b77 | 4 | 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 11 | (at your option) any later version. |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
22 | ||
252b5132 | 23 | |
1b74d094 BW |
24 | /* |
25 | SECTION | |
252b5132 RH |
26 | ELF backends |
27 | ||
28 | BFD support for ELF formats is being worked on. | |
29 | Currently, the best supported back ends are for sparc and i386 | |
30 | (running svr4 or Solaris 2). | |
31 | ||
32 | Documentation of the internals of the support code still needs | |
33 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 34 | haven't bothered yet. */ |
252b5132 | 35 | |
7ee38065 MS |
36 | /* For sparc64-cross-sparc32. */ |
37 | #define _SYSCALL32 | |
252b5132 | 38 | #include "sysdep.h" |
3db64b00 | 39 | #include "bfd.h" |
252b5132 RH |
40 | #include "bfdlink.h" |
41 | #include "libbfd.h" | |
42 | #define ARCH_SIZE 0 | |
43 | #include "elf-bfd.h" | |
e0e8c97f | 44 | #include "libiberty.h" |
ff59fc36 | 45 | #include "safe-ctype.h" |
252b5132 | 46 | |
217aa764 | 47 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 48 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
49 | static bfd_boolean prep_headers (bfd *); |
50 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
51 | static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ; | |
50b2bdb7 | 52 | |
252b5132 RH |
53 | /* Swap version information in and out. The version information is |
54 | currently size independent. If that ever changes, this code will | |
55 | need to move into elfcode.h. */ | |
56 | ||
57 | /* Swap in a Verdef structure. */ | |
58 | ||
59 | void | |
217aa764 AM |
60 | _bfd_elf_swap_verdef_in (bfd *abfd, |
61 | const Elf_External_Verdef *src, | |
62 | Elf_Internal_Verdef *dst) | |
252b5132 | 63 | { |
dc810e39 AM |
64 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
65 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
66 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
67 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
68 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
69 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
70 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
71 | } |
72 | ||
73 | /* Swap out a Verdef structure. */ | |
74 | ||
75 | void | |
217aa764 AM |
76 | _bfd_elf_swap_verdef_out (bfd *abfd, |
77 | const Elf_Internal_Verdef *src, | |
78 | Elf_External_Verdef *dst) | |
252b5132 | 79 | { |
dc810e39 AM |
80 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
81 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
82 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
83 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
84 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
85 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
86 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
87 | } |
88 | ||
89 | /* Swap in a Verdaux structure. */ | |
90 | ||
91 | void | |
217aa764 AM |
92 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
93 | const Elf_External_Verdaux *src, | |
94 | Elf_Internal_Verdaux *dst) | |
252b5132 | 95 | { |
dc810e39 AM |
96 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
97 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
98 | } |
99 | ||
100 | /* Swap out a Verdaux structure. */ | |
101 | ||
102 | void | |
217aa764 AM |
103 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
104 | const Elf_Internal_Verdaux *src, | |
105 | Elf_External_Verdaux *dst) | |
252b5132 | 106 | { |
dc810e39 AM |
107 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
108 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
109 | } |
110 | ||
111 | /* Swap in a Verneed structure. */ | |
112 | ||
113 | void | |
217aa764 AM |
114 | _bfd_elf_swap_verneed_in (bfd *abfd, |
115 | const Elf_External_Verneed *src, | |
116 | Elf_Internal_Verneed *dst) | |
252b5132 | 117 | { |
dc810e39 AM |
118 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
119 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
120 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
121 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
122 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
123 | } |
124 | ||
125 | /* Swap out a Verneed structure. */ | |
126 | ||
127 | void | |
217aa764 AM |
128 | _bfd_elf_swap_verneed_out (bfd *abfd, |
129 | const Elf_Internal_Verneed *src, | |
130 | Elf_External_Verneed *dst) | |
252b5132 | 131 | { |
dc810e39 AM |
132 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
133 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
134 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
135 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
136 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
137 | } |
138 | ||
139 | /* Swap in a Vernaux structure. */ | |
140 | ||
141 | void | |
217aa764 AM |
142 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
143 | const Elf_External_Vernaux *src, | |
144 | Elf_Internal_Vernaux *dst) | |
252b5132 | 145 | { |
dc810e39 AM |
146 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
147 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
148 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
149 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
150 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
151 | } |
152 | ||
153 | /* Swap out a Vernaux structure. */ | |
154 | ||
155 | void | |
217aa764 AM |
156 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
157 | const Elf_Internal_Vernaux *src, | |
158 | Elf_External_Vernaux *dst) | |
252b5132 | 159 | { |
dc810e39 AM |
160 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
161 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
162 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
163 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
164 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
165 | } |
166 | ||
167 | /* Swap in a Versym structure. */ | |
168 | ||
169 | void | |
217aa764 AM |
170 | _bfd_elf_swap_versym_in (bfd *abfd, |
171 | const Elf_External_Versym *src, | |
172 | Elf_Internal_Versym *dst) | |
252b5132 | 173 | { |
dc810e39 | 174 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
175 | } |
176 | ||
177 | /* Swap out a Versym structure. */ | |
178 | ||
179 | void | |
217aa764 AM |
180 | _bfd_elf_swap_versym_out (bfd *abfd, |
181 | const Elf_Internal_Versym *src, | |
182 | Elf_External_Versym *dst) | |
252b5132 | 183 | { |
dc810e39 | 184 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
185 | } |
186 | ||
187 | /* Standard ELF hash function. Do not change this function; you will | |
188 | cause invalid hash tables to be generated. */ | |
3a99b017 | 189 | |
252b5132 | 190 | unsigned long |
217aa764 | 191 | bfd_elf_hash (const char *namearg) |
252b5132 | 192 | { |
3a99b017 | 193 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
194 | unsigned long h = 0; |
195 | unsigned long g; | |
196 | int ch; | |
197 | ||
198 | while ((ch = *name++) != '\0') | |
199 | { | |
200 | h = (h << 4) + ch; | |
201 | if ((g = (h & 0xf0000000)) != 0) | |
202 | { | |
203 | h ^= g >> 24; | |
204 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
205 | this case and on some machines one insn instead of two. */ | |
206 | h ^= g; | |
207 | } | |
208 | } | |
32dfa85d | 209 | return h & 0xffffffff; |
252b5132 RH |
210 | } |
211 | ||
fdc90cb4 JJ |
212 | /* DT_GNU_HASH hash function. Do not change this function; you will |
213 | cause invalid hash tables to be generated. */ | |
214 | ||
215 | unsigned long | |
216 | bfd_elf_gnu_hash (const char *namearg) | |
217 | { | |
218 | const unsigned char *name = (const unsigned char *) namearg; | |
219 | unsigned long h = 5381; | |
220 | unsigned char ch; | |
221 | ||
222 | while ((ch = *name++) != '\0') | |
223 | h = (h << 5) + h + ch; | |
224 | return h & 0xffffffff; | |
225 | } | |
226 | ||
b34976b6 | 227 | bfd_boolean |
217aa764 | 228 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 229 | { |
62d7a5f6 AM |
230 | if (abfd->tdata.any == NULL) |
231 | { | |
232 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); | |
233 | if (abfd->tdata.any == NULL) | |
234 | return FALSE; | |
235 | } | |
236 | ||
237 | elf_tdata (abfd)->program_header_size = (bfd_size_type) -1; | |
252b5132 | 238 | |
b34976b6 | 239 | return TRUE; |
252b5132 RH |
240 | } |
241 | ||
b34976b6 | 242 | bfd_boolean |
217aa764 | 243 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 244 | { |
c044fabd | 245 | /* I think this can be done just like an object file. */ |
252b5132 RH |
246 | return bfd_elf_mkobject (abfd); |
247 | } | |
248 | ||
249 | char * | |
217aa764 | 250 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
251 | { |
252 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 253 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
254 | file_ptr offset; |
255 | bfd_size_type shstrtabsize; | |
252b5132 RH |
256 | |
257 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
258 | if (i_shdrp == 0 |
259 | || shindex >= elf_numsections (abfd) | |
260 | || i_shdrp[shindex] == 0) | |
f075ee0c | 261 | return NULL; |
252b5132 | 262 | |
f075ee0c | 263 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
264 | if (shstrtab == NULL) |
265 | { | |
c044fabd | 266 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
267 | offset = i_shdrp[shindex]->sh_offset; |
268 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
269 | |
270 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
271 | in case the string table is not terminated. */ | |
272 | if (shstrtabsize + 1 == 0 | |
273 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
274 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
275 | shstrtab = NULL; | |
276 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
277 | { | |
278 | if (bfd_get_error () != bfd_error_system_call) | |
279 | bfd_set_error (bfd_error_file_truncated); | |
280 | shstrtab = NULL; | |
281 | } | |
282 | else | |
283 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 284 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 285 | } |
f075ee0c | 286 | return (char *) shstrtab; |
252b5132 RH |
287 | } |
288 | ||
289 | char * | |
217aa764 AM |
290 | bfd_elf_string_from_elf_section (bfd *abfd, |
291 | unsigned int shindex, | |
292 | unsigned int strindex) | |
252b5132 RH |
293 | { |
294 | Elf_Internal_Shdr *hdr; | |
295 | ||
296 | if (strindex == 0) | |
297 | return ""; | |
298 | ||
74f2e02b AM |
299 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
300 | return NULL; | |
301 | ||
252b5132 RH |
302 | hdr = elf_elfsections (abfd)[shindex]; |
303 | ||
304 | if (hdr->contents == NULL | |
305 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
306 | return NULL; | |
307 | ||
308 | if (strindex >= hdr->sh_size) | |
309 | { | |
1b3a8575 | 310 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 311 | (*_bfd_error_handler) |
d003868e AM |
312 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
313 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 314 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 315 | ? ".shstrtab" |
1b3a8575 | 316 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
317 | return ""; |
318 | } | |
319 | ||
320 | return ((char *) hdr->contents) + strindex; | |
321 | } | |
322 | ||
6cdc0ccc AM |
323 | /* Read and convert symbols to internal format. |
324 | SYMCOUNT specifies the number of symbols to read, starting from | |
325 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
326 | are non-NULL, they are used to store the internal symbols, external | |
327 | symbols, and symbol section index extensions, respectively. */ | |
328 | ||
329 | Elf_Internal_Sym * | |
217aa764 AM |
330 | bfd_elf_get_elf_syms (bfd *ibfd, |
331 | Elf_Internal_Shdr *symtab_hdr, | |
332 | size_t symcount, | |
333 | size_t symoffset, | |
334 | Elf_Internal_Sym *intsym_buf, | |
335 | void *extsym_buf, | |
336 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
337 | { |
338 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 339 | void *alloc_ext; |
df622259 | 340 | const bfd_byte *esym; |
6cdc0ccc AM |
341 | Elf_External_Sym_Shndx *alloc_extshndx; |
342 | Elf_External_Sym_Shndx *shndx; | |
343 | Elf_Internal_Sym *isym; | |
344 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 345 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
346 | size_t extsym_size; |
347 | bfd_size_type amt; | |
348 | file_ptr pos; | |
349 | ||
350 | if (symcount == 0) | |
351 | return intsym_buf; | |
352 | ||
353 | /* Normal syms might have section extension entries. */ | |
354 | shndx_hdr = NULL; | |
355 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
356 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
357 | ||
358 | /* Read the symbols. */ | |
359 | alloc_ext = NULL; | |
360 | alloc_extshndx = NULL; | |
361 | bed = get_elf_backend_data (ibfd); | |
362 | extsym_size = bed->s->sizeof_sym; | |
363 | amt = symcount * extsym_size; | |
364 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
365 | if (extsym_buf == NULL) | |
366 | { | |
d0fb9a8d | 367 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
368 | extsym_buf = alloc_ext; |
369 | } | |
370 | if (extsym_buf == NULL | |
371 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
372 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
373 | { | |
374 | intsym_buf = NULL; | |
375 | goto out; | |
376 | } | |
377 | ||
378 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
379 | extshndx_buf = NULL; | |
380 | else | |
381 | { | |
382 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
383 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
384 | if (extshndx_buf == NULL) | |
385 | { | |
d0fb9a8d JJ |
386 | alloc_extshndx = bfd_malloc2 (symcount, |
387 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
388 | extshndx_buf = alloc_extshndx; |
389 | } | |
390 | if (extshndx_buf == NULL | |
391 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
392 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
393 | { | |
394 | intsym_buf = NULL; | |
395 | goto out; | |
396 | } | |
397 | } | |
398 | ||
399 | if (intsym_buf == NULL) | |
400 | { | |
d0fb9a8d | 401 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
402 | if (intsym_buf == NULL) |
403 | goto out; | |
404 | } | |
405 | ||
406 | /* Convert the symbols to internal form. */ | |
407 | isymend = intsym_buf + symcount; | |
408 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
409 | isym < isymend; | |
410 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
411 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
412 | { | |
413 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
414 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
415 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
416 | ibfd, (unsigned long) symoffset); | |
417 | intsym_buf = NULL; | |
418 | goto out; | |
419 | } | |
6cdc0ccc AM |
420 | |
421 | out: | |
422 | if (alloc_ext != NULL) | |
423 | free (alloc_ext); | |
424 | if (alloc_extshndx != NULL) | |
425 | free (alloc_extshndx); | |
426 | ||
427 | return intsym_buf; | |
428 | } | |
429 | ||
5cab59f6 AM |
430 | /* Look up a symbol name. */ |
431 | const char * | |
be8dd2ca AM |
432 | bfd_elf_sym_name (bfd *abfd, |
433 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
434 | Elf_Internal_Sym *isym, |
435 | asection *sym_sec) | |
5cab59f6 | 436 | { |
26c61ae5 | 437 | const char *name; |
5cab59f6 | 438 | unsigned int iname = isym->st_name; |
be8dd2ca | 439 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 440 | |
138f35cc JJ |
441 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
442 | /* Check for a bogus st_shndx to avoid crashing. */ | |
443 | && isym->st_shndx < elf_numsections (abfd) | |
444 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
445 | { |
446 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
447 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
448 | } | |
449 | ||
26c61ae5 L |
450 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
451 | if (name == NULL) | |
452 | name = "(null)"; | |
453 | else if (sym_sec && *name == '\0') | |
454 | name = bfd_section_name (abfd, sym_sec); | |
455 | ||
456 | return name; | |
5cab59f6 AM |
457 | } |
458 | ||
dbb410c3 AM |
459 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
460 | sections. The first element is the flags, the rest are section | |
461 | pointers. */ | |
462 | ||
463 | typedef union elf_internal_group { | |
464 | Elf_Internal_Shdr *shdr; | |
465 | unsigned int flags; | |
466 | } Elf_Internal_Group; | |
467 | ||
b885599b AM |
468 | /* Return the name of the group signature symbol. Why isn't the |
469 | signature just a string? */ | |
470 | ||
471 | static const char * | |
217aa764 | 472 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 473 | { |
9dce4196 | 474 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
475 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
476 | Elf_External_Sym_Shndx eshndx; | |
477 | Elf_Internal_Sym isym; | |
b885599b | 478 | |
13792e9d L |
479 | /* First we need to ensure the symbol table is available. Make sure |
480 | that it is a symbol table section. */ | |
481 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
482 | if (hdr->sh_type != SHT_SYMTAB | |
483 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
484 | return NULL; |
485 | ||
9dce4196 AM |
486 | /* Go read the symbol. */ |
487 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
488 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
489 | &isym, esym, &eshndx) == NULL) | |
b885599b | 490 | return NULL; |
9dce4196 | 491 | |
26c61ae5 | 492 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
493 | } |
494 | ||
dbb410c3 AM |
495 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
496 | ||
b34976b6 | 497 | static bfd_boolean |
217aa764 | 498 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
499 | { |
500 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
501 | ||
502 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
503 | is set to -1 if there are no SHT_GROUP sections. */ | |
504 | if (num_group == 0) | |
505 | { | |
506 | unsigned int i, shnum; | |
507 | ||
508 | /* First count the number of groups. If we have a SHT_GROUP | |
509 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 510 | shnum = elf_numsections (abfd); |
dbb410c3 | 511 | num_group = 0; |
08a40648 | 512 | |
1783205a NC |
513 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ |
514 | ( (shdr)->sh_type == SHT_GROUP \ | |
515 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
516 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
517 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 518 | |
dbb410c3 AM |
519 | for (i = 0; i < shnum; i++) |
520 | { | |
521 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
522 | |
523 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
524 | num_group += 1; |
525 | } | |
526 | ||
527 | if (num_group == 0) | |
20dbb49d L |
528 | { |
529 | num_group = (unsigned) -1; | |
530 | elf_tdata (abfd)->num_group = num_group; | |
531 | } | |
532 | else | |
dbb410c3 AM |
533 | { |
534 | /* We keep a list of elf section headers for group sections, | |
535 | so we can find them quickly. */ | |
20dbb49d | 536 | bfd_size_type amt; |
d0fb9a8d | 537 | |
20dbb49d | 538 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
539 | elf_tdata (abfd)->group_sect_ptr |
540 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 541 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 542 | return FALSE; |
dbb410c3 AM |
543 | |
544 | num_group = 0; | |
545 | for (i = 0; i < shnum; i++) | |
546 | { | |
547 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
548 | |
549 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 550 | { |
973ffd63 | 551 | unsigned char *src; |
dbb410c3 AM |
552 | Elf_Internal_Group *dest; |
553 | ||
554 | /* Add to list of sections. */ | |
555 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
556 | num_group += 1; | |
557 | ||
558 | /* Read the raw contents. */ | |
559 | BFD_ASSERT (sizeof (*dest) >= 4); | |
560 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
561 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
562 | sizeof (*dest) / 4); | |
1783205a NC |
563 | /* PR binutils/4110: Handle corrupt group headers. */ |
564 | if (shdr->contents == NULL) | |
565 | { | |
566 | _bfd_error_handler | |
567 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
568 | bfd_set_error (bfd_error_bad_value); | |
569 | return FALSE; | |
570 | } | |
571 | ||
572 | memset (shdr->contents, 0, amt); | |
573 | ||
574 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
575 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
576 | != shdr->sh_size)) | |
b34976b6 | 577 | return FALSE; |
dbb410c3 AM |
578 | |
579 | /* Translate raw contents, a flag word followed by an | |
580 | array of elf section indices all in target byte order, | |
581 | to the flag word followed by an array of elf section | |
582 | pointers. */ | |
583 | src = shdr->contents + shdr->sh_size; | |
584 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
585 | while (1) | |
586 | { | |
587 | unsigned int idx; | |
588 | ||
589 | src -= 4; | |
590 | --dest; | |
591 | idx = H_GET_32 (abfd, src); | |
592 | if (src == shdr->contents) | |
593 | { | |
594 | dest->flags = idx; | |
b885599b AM |
595 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
596 | shdr->bfd_section->flags | |
597 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
598 | break; |
599 | } | |
600 | if (idx >= shnum) | |
601 | { | |
602 | ((*_bfd_error_handler) | |
d003868e | 603 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
604 | idx = 0; |
605 | } | |
606 | dest->shdr = elf_elfsections (abfd)[idx]; | |
607 | } | |
608 | } | |
609 | } | |
610 | } | |
611 | } | |
612 | ||
613 | if (num_group != (unsigned) -1) | |
614 | { | |
615 | unsigned int i; | |
616 | ||
617 | for (i = 0; i < num_group; i++) | |
618 | { | |
619 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
620 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
621 | unsigned int n_elt = shdr->sh_size / 4; | |
622 | ||
623 | /* Look through this group's sections to see if current | |
624 | section is a member. */ | |
625 | while (--n_elt != 0) | |
626 | if ((++idx)->shdr == hdr) | |
627 | { | |
e0e8c97f | 628 | asection *s = NULL; |
dbb410c3 AM |
629 | |
630 | /* We are a member of this group. Go looking through | |
631 | other members to see if any others are linked via | |
632 | next_in_group. */ | |
633 | idx = (Elf_Internal_Group *) shdr->contents; | |
634 | n_elt = shdr->sh_size / 4; | |
635 | while (--n_elt != 0) | |
636 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 637 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
638 | break; |
639 | if (n_elt != 0) | |
640 | { | |
dbb410c3 AM |
641 | /* Snarf the group name from other member, and |
642 | insert current section in circular list. */ | |
945906ff AM |
643 | elf_group_name (newsect) = elf_group_name (s); |
644 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
645 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
646 | } |
647 | else | |
648 | { | |
dbb410c3 AM |
649 | const char *gname; |
650 | ||
b885599b AM |
651 | gname = group_signature (abfd, shdr); |
652 | if (gname == NULL) | |
b34976b6 | 653 | return FALSE; |
945906ff | 654 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
655 | |
656 | /* Start a circular list with one element. */ | |
945906ff | 657 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 658 | } |
b885599b | 659 | |
9dce4196 AM |
660 | /* If the group section has been created, point to the |
661 | new member. */ | |
dbb410c3 | 662 | if (shdr->bfd_section != NULL) |
945906ff | 663 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 664 | |
dbb410c3 AM |
665 | i = num_group - 1; |
666 | break; | |
667 | } | |
668 | } | |
669 | } | |
670 | ||
945906ff | 671 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 672 | { |
d003868e AM |
673 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
674 | abfd, newsect); | |
dbb410c3 | 675 | } |
b34976b6 | 676 | return TRUE; |
dbb410c3 AM |
677 | } |
678 | ||
3d7f7666 | 679 | bfd_boolean |
dd863624 | 680 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
681 | { |
682 | unsigned int i; | |
683 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
684 | bfd_boolean result = TRUE; | |
dd863624 L |
685 | asection *s; |
686 | ||
687 | /* Process SHF_LINK_ORDER. */ | |
688 | for (s = abfd->sections; s != NULL; s = s->next) | |
689 | { | |
690 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
691 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
692 | { | |
693 | unsigned int elfsec = this_hdr->sh_link; | |
694 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
695 | not set the sh_link or sh_info fields. Hence we could | |
696 | get the situation where elfsec is 0. */ | |
697 | if (elfsec == 0) | |
698 | { | |
699 | const struct elf_backend_data *bed | |
700 | = get_elf_backend_data (abfd); | |
701 | if (bed->link_order_error_handler) | |
702 | bed->link_order_error_handler | |
703 | (_("%B: warning: sh_link not set for section `%A'"), | |
704 | abfd, s); | |
705 | } | |
706 | else | |
707 | { | |
25bbc984 L |
708 | asection *link; |
709 | ||
dd863624 | 710 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
711 | |
712 | /* PR 1991, 2008: | |
713 | Some strip/objcopy may leave an incorrect value in | |
714 | sh_link. We don't want to proceed. */ | |
715 | link = this_hdr->bfd_section; | |
716 | if (link == NULL) | |
717 | { | |
718 | (*_bfd_error_handler) | |
719 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
720 | s->owner, s, elfsec); | |
721 | result = FALSE; | |
722 | } | |
723 | ||
724 | elf_linked_to_section (s) = link; | |
dd863624 L |
725 | } |
726 | } | |
727 | } | |
3d7f7666 | 728 | |
dd863624 | 729 | /* Process section groups. */ |
3d7f7666 L |
730 | if (num_group == (unsigned) -1) |
731 | return result; | |
732 | ||
733 | for (i = 0; i < num_group; i++) | |
734 | { | |
735 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
736 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
737 | unsigned int n_elt = shdr->sh_size / 4; | |
738 | ||
739 | while (--n_elt != 0) | |
740 | if ((++idx)->shdr->bfd_section) | |
741 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
742 | else if (idx->shdr->sh_type == SHT_RELA | |
743 | || idx->shdr->sh_type == SHT_REL) | |
744 | /* We won't include relocation sections in section groups in | |
745 | output object files. We adjust the group section size here | |
746 | so that relocatable link will work correctly when | |
747 | relocation sections are in section group in input object | |
748 | files. */ | |
749 | shdr->bfd_section->size -= 4; | |
750 | else | |
751 | { | |
752 | /* There are some unknown sections in the group. */ | |
753 | (*_bfd_error_handler) | |
d003868e AM |
754 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
755 | abfd, | |
3d7f7666 | 756 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
757 | bfd_elf_string_from_elf_section (abfd, |
758 | (elf_elfheader (abfd) | |
759 | ->e_shstrndx), | |
760 | idx->shdr->sh_name), | |
3d7f7666 L |
761 | shdr->bfd_section->name); |
762 | result = FALSE; | |
763 | } | |
764 | } | |
765 | return result; | |
766 | } | |
767 | ||
72adc230 AM |
768 | bfd_boolean |
769 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
770 | { | |
771 | return elf_next_in_group (sec) != NULL; | |
772 | } | |
773 | ||
252b5132 RH |
774 | /* Make a BFD section from an ELF section. We store a pointer to the |
775 | BFD section in the bfd_section field of the header. */ | |
776 | ||
b34976b6 | 777 | bfd_boolean |
217aa764 AM |
778 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
779 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
780 | const char *name, |
781 | int shindex) | |
252b5132 RH |
782 | { |
783 | asection *newsect; | |
784 | flagword flags; | |
9c5bfbb7 | 785 | const struct elf_backend_data *bed; |
252b5132 RH |
786 | |
787 | if (hdr->bfd_section != NULL) | |
788 | { | |
789 | BFD_ASSERT (strcmp (name, | |
790 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 791 | return TRUE; |
252b5132 RH |
792 | } |
793 | ||
794 | newsect = bfd_make_section_anyway (abfd, name); | |
795 | if (newsect == NULL) | |
b34976b6 | 796 | return FALSE; |
252b5132 | 797 | |
1829f4b2 AM |
798 | hdr->bfd_section = newsect; |
799 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 800 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 801 | |
2f89ff8d L |
802 | /* Always use the real type/flags. */ |
803 | elf_section_type (newsect) = hdr->sh_type; | |
804 | elf_section_flags (newsect) = hdr->sh_flags; | |
805 | ||
252b5132 RH |
806 | newsect->filepos = hdr->sh_offset; |
807 | ||
808 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
809 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
810 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 811 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 812 | return FALSE; |
252b5132 RH |
813 | |
814 | flags = SEC_NO_FLAGS; | |
815 | if (hdr->sh_type != SHT_NOBITS) | |
816 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 817 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 818 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
819 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
820 | { | |
821 | flags |= SEC_ALLOC; | |
822 | if (hdr->sh_type != SHT_NOBITS) | |
823 | flags |= SEC_LOAD; | |
824 | } | |
825 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
826 | flags |= SEC_READONLY; | |
827 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
828 | flags |= SEC_CODE; | |
829 | else if ((flags & SEC_LOAD) != 0) | |
830 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
831 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
832 | { | |
833 | flags |= SEC_MERGE; | |
834 | newsect->entsize = hdr->sh_entsize; | |
835 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
836 | flags |= SEC_STRINGS; | |
837 | } | |
dbb410c3 AM |
838 | if (hdr->sh_flags & SHF_GROUP) |
839 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 840 | return FALSE; |
13ae64f3 JJ |
841 | if ((hdr->sh_flags & SHF_TLS) != 0) |
842 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 843 | |
3d2b39cf | 844 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 845 | { |
3d2b39cf L |
846 | /* The debugging sections appear to be recognized only by name, |
847 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
848 | static const struct | |
849 | { | |
850 | const char *name; | |
851 | int len; | |
852 | } debug_sections [] = | |
853 | { | |
0112cd26 | 854 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
855 | { NULL, 0 }, /* 'e' */ |
856 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 857 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
858 | { NULL, 0 }, /* 'h' */ |
859 | { NULL, 0 }, /* 'i' */ | |
860 | { NULL, 0 }, /* 'j' */ | |
861 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 862 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
863 | { NULL, 0 }, /* 'm' */ |
864 | { NULL, 0 }, /* 'n' */ | |
865 | { NULL, 0 }, /* 'o' */ | |
866 | { NULL, 0 }, /* 'p' */ | |
867 | { NULL, 0 }, /* 'q' */ | |
868 | { NULL, 0 }, /* 'r' */ | |
0112cd26 | 869 | { STRING_COMMA_LEN ("stab") } /* 's' */ |
3d2b39cf | 870 | }; |
08a40648 | 871 | |
3d2b39cf L |
872 | if (name [0] == '.') |
873 | { | |
874 | int i = name [1] - 'd'; | |
875 | if (i >= 0 | |
876 | && i < (int) ARRAY_SIZE (debug_sections) | |
877 | && debug_sections [i].name != NULL | |
878 | && strncmp (&name [1], debug_sections [i].name, | |
879 | debug_sections [i].len) == 0) | |
880 | flags |= SEC_DEBUGGING; | |
881 | } | |
882 | } | |
252b5132 RH |
883 | |
884 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
885 | only link a single copy of the section. This is used to support | |
886 | g++. g++ will emit each template expansion in its own section. | |
887 | The symbols will be defined as weak, so that multiple definitions | |
888 | are permitted. The GNU linker extension is to actually discard | |
889 | all but one of the sections. */ | |
0112cd26 | 890 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 891 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
892 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
893 | ||
fa152c49 JW |
894 | bed = get_elf_backend_data (abfd); |
895 | if (bed->elf_backend_section_flags) | |
896 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 897 | return FALSE; |
fa152c49 | 898 | |
252b5132 | 899 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 900 | return FALSE; |
252b5132 RH |
901 | |
902 | if ((flags & SEC_ALLOC) != 0) | |
903 | { | |
904 | Elf_Internal_Phdr *phdr; | |
905 | unsigned int i; | |
906 | ||
907 | /* Look through the phdrs to see if we need to adjust the lma. | |
08a40648 AM |
908 | If all the p_paddr fields are zero, we ignore them, since |
909 | some ELF linkers produce such output. */ | |
252b5132 RH |
910 | phdr = elf_tdata (abfd)->phdr; |
911 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
912 | { | |
913 | if (phdr->p_paddr != 0) | |
914 | break; | |
915 | } | |
916 | if (i < elf_elfheader (abfd)->e_phnum) | |
917 | { | |
918 | phdr = elf_tdata (abfd)->phdr; | |
919 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
920 | { | |
e0e8c97f NC |
921 | /* This section is part of this segment if its file |
922 | offset plus size lies within the segment's memory | |
923 | span and, if the section is loaded, the extent of the | |
47d9a591 | 924 | loaded data lies within the extent of the segment. |
bf36db18 NC |
925 | |
926 | Note - we used to check the p_paddr field as well, and | |
927 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 928 | though, as a perfectly valid initialised segment can |
bf36db18 | 929 | have a p_paddr of zero. Some architectures, eg ARM, |
08a40648 AM |
930 | place special significance on the address 0 and |
931 | executables need to be able to have a segment which | |
932 | covers this address. */ | |
252b5132 | 933 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
934 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
935 | && (hdr->sh_offset + hdr->sh_size | |
936 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 937 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
938 | || (hdr->sh_offset + hdr->sh_size |
939 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 940 | { |
dba143ef | 941 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
942 | newsect->lma = (phdr->p_paddr |
943 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
944 | else |
945 | /* We used to use the same adjustment for SEC_LOAD | |
946 | sections, but that doesn't work if the segment | |
947 | is packed with code from multiple VMAs. | |
948 | Instead we calculate the section LMA based on | |
949 | the segment LMA. It is assumed that the | |
950 | segment will contain sections with contiguous | |
951 | LMAs, even if the VMAs are not. */ | |
952 | newsect->lma = (phdr->p_paddr | |
953 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
954 | |
955 | /* With contiguous segments, we can't tell from file | |
956 | offsets whether a section with zero size should | |
957 | be placed at the end of one segment or the | |
958 | beginning of the next. Decide based on vaddr. */ | |
959 | if (hdr->sh_addr >= phdr->p_vaddr | |
960 | && (hdr->sh_addr + hdr->sh_size | |
961 | <= phdr->p_vaddr + phdr->p_memsz)) | |
962 | break; | |
252b5132 RH |
963 | } |
964 | } | |
965 | } | |
966 | } | |
967 | ||
b34976b6 | 968 | return TRUE; |
252b5132 RH |
969 | } |
970 | ||
971 | /* | |
972 | INTERNAL_FUNCTION | |
973 | bfd_elf_find_section | |
974 | ||
975 | SYNOPSIS | |
976 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
977 | ||
978 | DESCRIPTION | |
979 | Helper functions for GDB to locate the string tables. | |
980 | Since BFD hides string tables from callers, GDB needs to use an | |
981 | internal hook to find them. Sun's .stabstr, in particular, | |
982 | isn't even pointed to by the .stab section, so ordinary | |
983 | mechanisms wouldn't work to find it, even if we had some. | |
984 | */ | |
985 | ||
986 | struct elf_internal_shdr * | |
217aa764 | 987 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
988 | { |
989 | Elf_Internal_Shdr **i_shdrp; | |
990 | char *shstrtab; | |
991 | unsigned int max; | |
992 | unsigned int i; | |
993 | ||
994 | i_shdrp = elf_elfsections (abfd); | |
995 | if (i_shdrp != NULL) | |
996 | { | |
9ad5cbcf AM |
997 | shstrtab = bfd_elf_get_str_section (abfd, |
998 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
999 | if (shstrtab != NULL) |
1000 | { | |
9ad5cbcf | 1001 | max = elf_numsections (abfd); |
252b5132 RH |
1002 | for (i = 1; i < max; i++) |
1003 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
1004 | return i_shdrp[i]; | |
1005 | } | |
1006 | } | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | const char *const bfd_elf_section_type_names[] = { | |
1011 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1012 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1013 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1014 | }; | |
1015 | ||
1049f94e | 1016 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1017 | output, and the reloc is against an external symbol, and nothing |
1018 | has given us any additional addend, the resulting reloc will also | |
1019 | be against the same symbol. In such a case, we don't want to | |
1020 | change anything about the way the reloc is handled, since it will | |
1021 | all be done at final link time. Rather than put special case code | |
1022 | into bfd_perform_relocation, all the reloc types use this howto | |
1023 | function. It just short circuits the reloc if producing | |
1049f94e | 1024 | relocatable output against an external symbol. */ |
252b5132 | 1025 | |
252b5132 | 1026 | bfd_reloc_status_type |
217aa764 AM |
1027 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1028 | arelent *reloc_entry, | |
1029 | asymbol *symbol, | |
1030 | void *data ATTRIBUTE_UNUSED, | |
1031 | asection *input_section, | |
1032 | bfd *output_bfd, | |
1033 | char **error_message ATTRIBUTE_UNUSED) | |
1034 | { | |
1035 | if (output_bfd != NULL | |
252b5132 RH |
1036 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1037 | && (! reloc_entry->howto->partial_inplace | |
1038 | || reloc_entry->addend == 0)) | |
1039 | { | |
1040 | reloc_entry->address += input_section->output_offset; | |
1041 | return bfd_reloc_ok; | |
1042 | } | |
1043 | ||
1044 | return bfd_reloc_continue; | |
1045 | } | |
1046 | \f | |
0ac4564e L |
1047 | /* Copy the program header and other data from one object module to |
1048 | another. */ | |
252b5132 | 1049 | |
b34976b6 | 1050 | bfd_boolean |
217aa764 | 1051 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1052 | { |
1053 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1054 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1055 | return TRUE; |
2d502050 L |
1056 | |
1057 | BFD_ASSERT (!elf_flags_init (obfd) | |
1058 | || (elf_elfheader (obfd)->e_flags | |
1059 | == elf_elfheader (ibfd)->e_flags)); | |
1060 | ||
0ac4564e | 1061 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1062 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1063 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1064 | |
1065 | /* Copy object attributes. */ | |
1066 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
1067 | ||
b34976b6 | 1068 | return TRUE; |
2d502050 L |
1069 | } |
1070 | ||
cedc298e L |
1071 | static const char * |
1072 | get_segment_type (unsigned int p_type) | |
1073 | { | |
1074 | const char *pt; | |
1075 | switch (p_type) | |
1076 | { | |
1077 | case PT_NULL: pt = "NULL"; break; | |
1078 | case PT_LOAD: pt = "LOAD"; break; | |
1079 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1080 | case PT_INTERP: pt = "INTERP"; break; | |
1081 | case PT_NOTE: pt = "NOTE"; break; | |
1082 | case PT_SHLIB: pt = "SHLIB"; break; | |
1083 | case PT_PHDR: pt = "PHDR"; break; | |
1084 | case PT_TLS: pt = "TLS"; break; | |
1085 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
1086 | case PT_GNU_STACK: pt = "STACK"; break; | |
1087 | case PT_GNU_RELRO: pt = "RELRO"; break; | |
1088 | default: pt = NULL; break; | |
1089 | } | |
1090 | return pt; | |
1091 | } | |
1092 | ||
f0b79d91 L |
1093 | /* Print out the program headers. */ |
1094 | ||
b34976b6 | 1095 | bfd_boolean |
217aa764 | 1096 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1097 | { |
217aa764 | 1098 | FILE *f = farg; |
252b5132 RH |
1099 | Elf_Internal_Phdr *p; |
1100 | asection *s; | |
1101 | bfd_byte *dynbuf = NULL; | |
1102 | ||
1103 | p = elf_tdata (abfd)->phdr; | |
1104 | if (p != NULL) | |
1105 | { | |
1106 | unsigned int i, c; | |
1107 | ||
1108 | fprintf (f, _("\nProgram Header:\n")); | |
1109 | c = elf_elfheader (abfd)->e_phnum; | |
1110 | for (i = 0; i < c; i++, p++) | |
1111 | { | |
cedc298e | 1112 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1113 | char buf[20]; |
1114 | ||
cedc298e | 1115 | if (pt == NULL) |
252b5132 | 1116 | { |
cedc298e L |
1117 | sprintf (buf, "0x%lx", p->p_type); |
1118 | pt = buf; | |
252b5132 | 1119 | } |
dc810e39 | 1120 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1121 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1122 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1123 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1124 | fprintf (f, " paddr 0x"); |
60b89a18 | 1125 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1126 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1127 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1128 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1129 | fprintf (f, " memsz 0x"); |
60b89a18 | 1130 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1131 | fprintf (f, " flags %c%c%c", |
1132 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1133 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1134 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1135 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1136 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1137 | fprintf (f, "\n"); |
1138 | } | |
1139 | } | |
1140 | ||
1141 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1142 | if (s != NULL) | |
1143 | { | |
1144 | int elfsec; | |
dc810e39 | 1145 | unsigned long shlink; |
252b5132 RH |
1146 | bfd_byte *extdyn, *extdynend; |
1147 | size_t extdynsize; | |
217aa764 | 1148 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1149 | |
1150 | fprintf (f, _("\nDynamic Section:\n")); | |
1151 | ||
eea6121a | 1152 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1153 | goto error_return; |
1154 | ||
1155 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1156 | if (elfsec == -1) | |
1157 | goto error_return; | |
dc810e39 | 1158 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1159 | |
1160 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1161 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1162 | ||
1163 | extdyn = dynbuf; | |
eea6121a | 1164 | extdynend = extdyn + s->size; |
252b5132 RH |
1165 | for (; extdyn < extdynend; extdyn += extdynsize) |
1166 | { | |
1167 | Elf_Internal_Dyn dyn; | |
1168 | const char *name; | |
1169 | char ab[20]; | |
b34976b6 | 1170 | bfd_boolean stringp; |
252b5132 | 1171 | |
217aa764 | 1172 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1173 | |
1174 | if (dyn.d_tag == DT_NULL) | |
1175 | break; | |
1176 | ||
b34976b6 | 1177 | stringp = FALSE; |
252b5132 RH |
1178 | switch (dyn.d_tag) |
1179 | { | |
1180 | default: | |
1181 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1182 | name = ab; | |
1183 | break; | |
1184 | ||
b34976b6 | 1185 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1186 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1187 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1188 | case DT_HASH: name = "HASH"; break; | |
1189 | case DT_STRTAB: name = "STRTAB"; break; | |
1190 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1191 | case DT_RELA: name = "RELA"; break; | |
1192 | case DT_RELASZ: name = "RELASZ"; break; | |
1193 | case DT_RELAENT: name = "RELAENT"; break; | |
1194 | case DT_STRSZ: name = "STRSZ"; break; | |
1195 | case DT_SYMENT: name = "SYMENT"; break; | |
1196 | case DT_INIT: name = "INIT"; break; | |
1197 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1198 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1199 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1200 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1201 | case DT_REL: name = "REL"; break; | |
1202 | case DT_RELSZ: name = "RELSZ"; break; | |
1203 | case DT_RELENT: name = "RELENT"; break; | |
1204 | case DT_PLTREL: name = "PLTREL"; break; | |
1205 | case DT_DEBUG: name = "DEBUG"; break; | |
1206 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1207 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1208 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1209 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1210 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1211 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1212 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1213 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1214 | case DT_FLAGS: name = "FLAGS"; break; |
1215 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1216 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1217 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1218 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1219 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1220 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1221 | case DT_FEATURE: name = "FEATURE"; break; | |
1222 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1223 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1224 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1225 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1226 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1227 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1228 | case DT_PLTPAD: name = "PLTPAD"; break; |
1229 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1230 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1231 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1232 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1233 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1234 | case DT_VERSYM: name = "VERSYM"; break; |
1235 | case DT_VERDEF: name = "VERDEF"; break; | |
1236 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1237 | case DT_VERNEED: name = "VERNEED"; break; | |
1238 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1239 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1240 | case DT_USED: name = "USED"; break; |
b34976b6 | 1241 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1242 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1243 | } |
1244 | ||
1245 | fprintf (f, " %-11s ", name); | |
1246 | if (! stringp) | |
1247 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1248 | else | |
1249 | { | |
1250 | const char *string; | |
dc810e39 | 1251 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1252 | |
dc810e39 | 1253 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1254 | if (string == NULL) |
1255 | goto error_return; | |
1256 | fprintf (f, "%s", string); | |
1257 | } | |
1258 | fprintf (f, "\n"); | |
1259 | } | |
1260 | ||
1261 | free (dynbuf); | |
1262 | dynbuf = NULL; | |
1263 | } | |
1264 | ||
1265 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1266 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1267 | { | |
fc0e6df6 | 1268 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1269 | return FALSE; |
252b5132 RH |
1270 | } |
1271 | ||
1272 | if (elf_dynverdef (abfd) != 0) | |
1273 | { | |
1274 | Elf_Internal_Verdef *t; | |
1275 | ||
1276 | fprintf (f, _("\nVersion definitions:\n")); | |
1277 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1278 | { | |
1279 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1280 | t->vd_flags, t->vd_hash, |
1281 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1282 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1283 | { |
1284 | Elf_Internal_Verdaux *a; | |
1285 | ||
1286 | fprintf (f, "\t"); | |
1287 | for (a = t->vd_auxptr->vda_nextptr; | |
1288 | a != NULL; | |
1289 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1290 | fprintf (f, "%s ", |
1291 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1292 | fprintf (f, "\n"); |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | if (elf_dynverref (abfd) != 0) | |
1298 | { | |
1299 | Elf_Internal_Verneed *t; | |
1300 | ||
1301 | fprintf (f, _("\nVersion References:\n")); | |
1302 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1303 | { | |
1304 | Elf_Internal_Vernaux *a; | |
1305 | ||
d0fb9a8d JJ |
1306 | fprintf (f, _(" required from %s:\n"), |
1307 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1308 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1309 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1310 | a->vna_flags, a->vna_other, |
1311 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1312 | } |
1313 | } | |
1314 | ||
b34976b6 | 1315 | return TRUE; |
252b5132 RH |
1316 | |
1317 | error_return: | |
1318 | if (dynbuf != NULL) | |
1319 | free (dynbuf); | |
b34976b6 | 1320 | return FALSE; |
252b5132 RH |
1321 | } |
1322 | ||
1323 | /* Display ELF-specific fields of a symbol. */ | |
1324 | ||
1325 | void | |
217aa764 AM |
1326 | bfd_elf_print_symbol (bfd *abfd, |
1327 | void *filep, | |
1328 | asymbol *symbol, | |
1329 | bfd_print_symbol_type how) | |
252b5132 | 1330 | { |
217aa764 | 1331 | FILE *file = filep; |
252b5132 RH |
1332 | switch (how) |
1333 | { | |
1334 | case bfd_print_symbol_name: | |
1335 | fprintf (file, "%s", symbol->name); | |
1336 | break; | |
1337 | case bfd_print_symbol_more: | |
1338 | fprintf (file, "elf "); | |
60b89a18 | 1339 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1340 | fprintf (file, " %lx", (long) symbol->flags); |
1341 | break; | |
1342 | case bfd_print_symbol_all: | |
1343 | { | |
4e8a9624 AM |
1344 | const char *section_name; |
1345 | const char *name = NULL; | |
9c5bfbb7 | 1346 | const struct elf_backend_data *bed; |
7a13edea | 1347 | unsigned char st_other; |
dbb410c3 | 1348 | bfd_vma val; |
c044fabd | 1349 | |
252b5132 | 1350 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1351 | |
1352 | bed = get_elf_backend_data (abfd); | |
1353 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1354 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1355 | |
1356 | if (name == NULL) | |
1357 | { | |
7ee38065 | 1358 | name = symbol->name; |
217aa764 | 1359 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1360 | } |
1361 | ||
252b5132 RH |
1362 | fprintf (file, " %s\t", section_name); |
1363 | /* Print the "other" value for a symbol. For common symbols, | |
1364 | we've already printed the size; now print the alignment. | |
1365 | For other symbols, we have no specified alignment, and | |
1366 | we've printed the address; now print the size. */ | |
dcf6c779 | 1367 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1368 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1369 | else | |
1370 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1371 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1372 | |
1373 | /* If we have version information, print it. */ | |
1374 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1375 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1376 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1377 | { | |
1378 | unsigned int vernum; | |
1379 | const char *version_string; | |
1380 | ||
1381 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1382 | ||
1383 | if (vernum == 0) | |
1384 | version_string = ""; | |
1385 | else if (vernum == 1) | |
1386 | version_string = "Base"; | |
1387 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1388 | version_string = | |
1389 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1390 | else | |
1391 | { | |
1392 | Elf_Internal_Verneed *t; | |
1393 | ||
1394 | version_string = ""; | |
1395 | for (t = elf_tdata (abfd)->verref; | |
1396 | t != NULL; | |
1397 | t = t->vn_nextref) | |
1398 | { | |
1399 | Elf_Internal_Vernaux *a; | |
1400 | ||
1401 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1402 | { | |
1403 | if (a->vna_other == vernum) | |
1404 | { | |
1405 | version_string = a->vna_nodename; | |
1406 | break; | |
1407 | } | |
1408 | } | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1413 | fprintf (file, " %-11s", version_string); | |
1414 | else | |
1415 | { | |
1416 | int i; | |
1417 | ||
1418 | fprintf (file, " (%s)", version_string); | |
1419 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1420 | putc (' ', file); | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1425 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1426 | |
7a13edea NC |
1427 | switch (st_other) |
1428 | { | |
1429 | case 0: break; | |
1430 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1431 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1432 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1433 | default: | |
1434 | /* Some other non-defined flags are also present, so print | |
1435 | everything hex. */ | |
1436 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1437 | } | |
252b5132 | 1438 | |
587ff49e | 1439 | fprintf (file, " %s", name); |
252b5132 RH |
1440 | } |
1441 | break; | |
1442 | } | |
1443 | } | |
252b5132 | 1444 | |
252b5132 RH |
1445 | /* Allocate an ELF string table--force the first byte to be zero. */ |
1446 | ||
1447 | struct bfd_strtab_hash * | |
217aa764 | 1448 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1449 | { |
1450 | struct bfd_strtab_hash *ret; | |
1451 | ||
1452 | ret = _bfd_stringtab_init (); | |
1453 | if (ret != NULL) | |
1454 | { | |
1455 | bfd_size_type loc; | |
1456 | ||
b34976b6 | 1457 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1458 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1459 | if (loc == (bfd_size_type) -1) | |
1460 | { | |
1461 | _bfd_stringtab_free (ret); | |
1462 | ret = NULL; | |
1463 | } | |
1464 | } | |
1465 | return ret; | |
1466 | } | |
1467 | \f | |
1468 | /* ELF .o/exec file reading */ | |
1469 | ||
c044fabd | 1470 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1471 | |
b34976b6 | 1472 | bfd_boolean |
217aa764 | 1473 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1474 | { |
1475 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1476 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1477 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1478 | const char *name; |
252b5132 | 1479 | |
1b3a8575 AM |
1480 | name = bfd_elf_string_from_elf_section (abfd, |
1481 | elf_elfheader (abfd)->e_shstrndx, | |
1482 | hdr->sh_name); | |
933d961a JJ |
1483 | if (name == NULL) |
1484 | return FALSE; | |
252b5132 RH |
1485 | |
1486 | switch (hdr->sh_type) | |
1487 | { | |
1488 | case SHT_NULL: | |
1489 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1490 | return TRUE; |
252b5132 RH |
1491 | |
1492 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1493 | case SHT_NOBITS: /* .bss section. */ |
1494 | case SHT_HASH: /* .hash section. */ | |
1495 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1496 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1497 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1498 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1499 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1500 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1501 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1502 | |
797fc050 | 1503 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1504 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1505 | return FALSE; |
8e0ed13f NC |
1506 | if (hdr->sh_link > elf_numsections (abfd) |
1507 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1508 | return FALSE; | |
797fc050 AM |
1509 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1510 | { | |
1511 | Elf_Internal_Shdr *dynsymhdr; | |
1512 | ||
1513 | /* The shared libraries distributed with hpux11 have a bogus | |
1514 | sh_link field for the ".dynamic" section. Find the | |
1515 | string table for the ".dynsym" section instead. */ | |
1516 | if (elf_dynsymtab (abfd) != 0) | |
1517 | { | |
1518 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1519 | hdr->sh_link = dynsymhdr->sh_link; | |
1520 | } | |
1521 | else | |
1522 | { | |
1523 | unsigned int i, num_sec; | |
1524 | ||
1525 | num_sec = elf_numsections (abfd); | |
1526 | for (i = 1; i < num_sec; i++) | |
1527 | { | |
1528 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1529 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1530 | { | |
1531 | hdr->sh_link = dynsymhdr->sh_link; | |
1532 | break; | |
1533 | } | |
1534 | } | |
1535 | } | |
1536 | } | |
1537 | break; | |
1538 | ||
252b5132 RH |
1539 | case SHT_SYMTAB: /* A symbol table */ |
1540 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1541 | return TRUE; |
252b5132 | 1542 | |
a50b2160 JJ |
1543 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1544 | return FALSE; | |
252b5132 RH |
1545 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1546 | elf_onesymtab (abfd) = shindex; | |
1547 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1548 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1549 | abfd->flags |= HAS_SYMS; | |
1550 | ||
1551 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1552 | SHF_ALLOC is set, and this is a shared object, then we also |
1553 | treat this section as a BFD section. We can not base the | |
1554 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1555 | set in a relocatable object file, which would confuse the | |
1556 | linker. */ | |
252b5132 RH |
1557 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1558 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1559 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1560 | shindex)) | |
b34976b6 | 1561 | return FALSE; |
252b5132 | 1562 | |
1b3a8575 AM |
1563 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1564 | can't read symbols without that section loaded as well. It | |
1565 | is most likely specified by the next section header. */ | |
1566 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1567 | { | |
1568 | unsigned int i, num_sec; | |
1569 | ||
1570 | num_sec = elf_numsections (abfd); | |
1571 | for (i = shindex + 1; i < num_sec; i++) | |
1572 | { | |
1573 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1574 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1575 | && hdr2->sh_link == shindex) | |
1576 | break; | |
1577 | } | |
1578 | if (i == num_sec) | |
1579 | for (i = 1; i < shindex; i++) | |
1580 | { | |
1581 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1582 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1583 | && hdr2->sh_link == shindex) | |
1584 | break; | |
1585 | } | |
1586 | if (i != shindex) | |
1587 | return bfd_section_from_shdr (abfd, i); | |
1588 | } | |
b34976b6 | 1589 | return TRUE; |
252b5132 RH |
1590 | |
1591 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1592 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1593 | return TRUE; |
252b5132 | 1594 | |
a50b2160 JJ |
1595 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1596 | return FALSE; | |
252b5132 RH |
1597 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1598 | elf_dynsymtab (abfd) = shindex; | |
1599 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1600 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1601 | abfd->flags |= HAS_SYMS; | |
1602 | ||
1603 | /* Besides being a symbol table, we also treat this as a regular | |
1604 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1605 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1606 | |
9ad5cbcf AM |
1607 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1608 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1609 | return TRUE; |
9ad5cbcf | 1610 | |
1b3a8575 | 1611 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1612 | elf_symtab_shndx (abfd) = shindex; |
1613 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1614 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1615 | return TRUE; |
9ad5cbcf | 1616 | |
252b5132 RH |
1617 | case SHT_STRTAB: /* A string table */ |
1618 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1619 | return TRUE; |
252b5132 RH |
1620 | if (ehdr->e_shstrndx == shindex) |
1621 | { | |
1622 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1623 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1624 | return TRUE; |
252b5132 | 1625 | } |
1b3a8575 AM |
1626 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1627 | { | |
1628 | symtab_strtab: | |
1629 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1630 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1631 | return TRUE; | |
1632 | } | |
1633 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1634 | { | |
1635 | dynsymtab_strtab: | |
1636 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1637 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1638 | elf_elfsections (abfd)[shindex] = hdr; | |
1639 | /* We also treat this as a regular section, so that objcopy | |
1640 | can handle it. */ | |
6dc132d9 L |
1641 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1642 | shindex); | |
1b3a8575 | 1643 | } |
252b5132 | 1644 | |
1b3a8575 AM |
1645 | /* If the string table isn't one of the above, then treat it as a |
1646 | regular section. We need to scan all the headers to be sure, | |
1647 | just in case this strtab section appeared before the above. */ | |
1648 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1649 | { | |
1650 | unsigned int i, num_sec; | |
252b5132 | 1651 | |
1b3a8575 AM |
1652 | num_sec = elf_numsections (abfd); |
1653 | for (i = 1; i < num_sec; i++) | |
1654 | { | |
1655 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1656 | if (hdr2->sh_link == shindex) | |
1657 | { | |
933d961a JJ |
1658 | /* Prevent endless recursion on broken objects. */ |
1659 | if (i == shindex) | |
1660 | return FALSE; | |
1b3a8575 AM |
1661 | if (! bfd_section_from_shdr (abfd, i)) |
1662 | return FALSE; | |
1663 | if (elf_onesymtab (abfd) == i) | |
1664 | goto symtab_strtab; | |
1665 | if (elf_dynsymtab (abfd) == i) | |
1666 | goto dynsymtab_strtab; | |
1667 | } | |
1668 | } | |
1669 | } | |
6dc132d9 | 1670 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1671 | |
1672 | case SHT_REL: | |
1673 | case SHT_RELA: | |
1674 | /* *These* do a lot of work -- but build no sections! */ | |
1675 | { | |
1676 | asection *target_sect; | |
1677 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1678 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1679 | |
aa2ca951 JJ |
1680 | if (hdr->sh_entsize |
1681 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1682 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1683 | return FALSE; | |
1684 | ||
03ae5f59 | 1685 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1686 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1687 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1688 | { |
1689 | ((*_bfd_error_handler) | |
d003868e AM |
1690 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1691 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1692 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1693 | shindex); | |
03ae5f59 ILT |
1694 | } |
1695 | ||
252b5132 RH |
1696 | /* For some incomprehensible reason Oracle distributes |
1697 | libraries for Solaris in which some of the objects have | |
1698 | bogus sh_link fields. It would be nice if we could just | |
1699 | reject them, but, unfortunately, some people need to use | |
1700 | them. We scan through the section headers; if we find only | |
1701 | one suitable symbol table, we clobber the sh_link to point | |
1702 | to it. I hope this doesn't break anything. */ | |
1703 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1704 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1705 | { | |
9ad5cbcf | 1706 | unsigned int scan; |
252b5132 RH |
1707 | int found; |
1708 | ||
1709 | found = 0; | |
9ad5cbcf | 1710 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1711 | { |
1712 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1713 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1714 | { | |
1715 | if (found != 0) | |
1716 | { | |
1717 | found = 0; | |
1718 | break; | |
1719 | } | |
1720 | found = scan; | |
1721 | } | |
1722 | } | |
1723 | if (found != 0) | |
1724 | hdr->sh_link = found; | |
1725 | } | |
1726 | ||
1727 | /* Get the symbol table. */ | |
1b3a8575 AM |
1728 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1729 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1730 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1731 | return FALSE; |
252b5132 RH |
1732 | |
1733 | /* If this reloc section does not use the main symbol table we | |
1734 | don't treat it as a reloc section. BFD can't adequately | |
1735 | represent such a section, so at least for now, we don't | |
c044fabd | 1736 | try. We just present it as a normal section. We also |
60bcf0fa | 1737 | can't use it as a reloc section if it points to the null |
185ef66d AM |
1738 | section, an invalid section, or another reloc section. */ |
1739 | if (hdr->sh_link != elf_onesymtab (abfd) | |
1740 | || hdr->sh_info == SHN_UNDEF | |
1741 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
1742 | || hdr->sh_info >= num_sec | |
1743 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
1744 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
1745 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1746 | shindex); | |
252b5132 RH |
1747 | |
1748 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1749 | return FALSE; |
252b5132 RH |
1750 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1751 | if (target_sect == NULL) | |
b34976b6 | 1752 | return FALSE; |
252b5132 RH |
1753 | |
1754 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1755 | || target_sect->reloc_count == 0) | |
1756 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1757 | else | |
1758 | { | |
dc810e39 | 1759 | bfd_size_type amt; |
252b5132 | 1760 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1761 | amt = sizeof (*hdr2); |
217aa764 | 1762 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
1763 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1764 | } | |
1765 | *hdr2 = *hdr; | |
1766 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1767 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1768 | target_sect->flags |= SEC_RELOC; |
1769 | target_sect->relocation = NULL; | |
1770 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1771 | /* In the section to which the relocations apply, mark whether |
1772 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1773 | if (hdr->sh_size != 0) |
68bfbfcc | 1774 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1775 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1776 | return TRUE; |
252b5132 | 1777 | } |
252b5132 RH |
1778 | |
1779 | case SHT_GNU_verdef: | |
1780 | elf_dynverdef (abfd) = shindex; | |
1781 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1782 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1783 | |
1784 | case SHT_GNU_versym: | |
a50b2160 JJ |
1785 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1786 | return FALSE; | |
252b5132 RH |
1787 | elf_dynversym (abfd) = shindex; |
1788 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1789 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1790 | |
1791 | case SHT_GNU_verneed: | |
1792 | elf_dynverref (abfd) = shindex; | |
1793 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1794 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1795 | |
1796 | case SHT_SHLIB: | |
b34976b6 | 1797 | return TRUE; |
252b5132 | 1798 | |
dbb410c3 | 1799 | case SHT_GROUP: |
b885599b AM |
1800 | /* We need a BFD section for objcopy and relocatable linking, |
1801 | and it's handy to have the signature available as the section | |
1802 | name. */ | |
1783205a | 1803 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1804 | return FALSE; |
b885599b AM |
1805 | name = group_signature (abfd, hdr); |
1806 | if (name == NULL) | |
b34976b6 | 1807 | return FALSE; |
6dc132d9 | 1808 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1809 | return FALSE; |
dbb410c3 AM |
1810 | if (hdr->contents != NULL) |
1811 | { | |
1812 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1813 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1814 | asection *s; |
1815 | ||
b885599b AM |
1816 | if (idx->flags & GRP_COMDAT) |
1817 | hdr->bfd_section->flags | |
1818 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1819 | ||
45c5e9ed L |
1820 | /* We try to keep the same section order as it comes in. */ |
1821 | idx += n_elt; | |
dbb410c3 | 1822 | while (--n_elt != 0) |
1783205a NC |
1823 | { |
1824 | --idx; | |
1825 | ||
1826 | if (idx->shdr != NULL | |
1827 | && (s = idx->shdr->bfd_section) != NULL | |
1828 | && elf_next_in_group (s) != NULL) | |
1829 | { | |
1830 | elf_next_in_group (hdr->bfd_section) = s; | |
1831 | break; | |
1832 | } | |
1833 | } | |
dbb410c3 AM |
1834 | } |
1835 | break; | |
1836 | ||
252b5132 | 1837 | default: |
104d59d1 JM |
1838 | /* Possibly an attributes section. */ |
1839 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1840 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1841 | { | |
1842 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1843 | return FALSE; | |
1844 | _bfd_elf_parse_attributes (abfd, hdr); | |
1845 | return TRUE; | |
1846 | } | |
1847 | ||
252b5132 | 1848 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1849 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1850 | return TRUE; | |
1851 | ||
1852 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1853 | { | |
1854 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1855 | /* FIXME: How to properly handle allocated section reserved | |
1856 | for applications? */ | |
1857 | (*_bfd_error_handler) | |
1858 | (_("%B: don't know how to handle allocated, application " | |
1859 | "specific section `%s' [0x%8x]"), | |
1860 | abfd, name, hdr->sh_type); | |
1861 | else | |
1862 | /* Allow sections reserved for applications. */ | |
1863 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1864 | shindex); | |
1865 | } | |
1866 | else if (hdr->sh_type >= SHT_LOPROC | |
1867 | && hdr->sh_type <= SHT_HIPROC) | |
1868 | /* FIXME: We should handle this section. */ | |
1869 | (*_bfd_error_handler) | |
1870 | (_("%B: don't know how to handle processor specific section " | |
1871 | "`%s' [0x%8x]"), | |
1872 | abfd, name, hdr->sh_type); | |
1873 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1874 | { |
1875 | /* Unrecognised OS-specific sections. */ | |
1876 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1877 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1878 | required to correctly process the section and the file should |
ff15b240 NC |
1879 | be rejected with an error message. */ |
1880 | (*_bfd_error_handler) | |
1881 | (_("%B: don't know how to handle OS specific section " | |
1882 | "`%s' [0x%8x]"), | |
1883 | abfd, name, hdr->sh_type); | |
1884 | else | |
1885 | /* Otherwise it should be processed. */ | |
1886 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1887 | } | |
3eb70a79 L |
1888 | else |
1889 | /* FIXME: We should handle this section. */ | |
1890 | (*_bfd_error_handler) | |
1891 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1892 | abfd, name, hdr->sh_type); | |
1893 | ||
1894 | return FALSE; | |
252b5132 RH |
1895 | } |
1896 | ||
b34976b6 | 1897 | return TRUE; |
252b5132 RH |
1898 | } |
1899 | ||
ec338859 AM |
1900 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
1901 | Return SEC for sections that have no elf section, and NULL on error. */ | |
1902 | ||
1903 | asection * | |
217aa764 AM |
1904 | bfd_section_from_r_symndx (bfd *abfd, |
1905 | struct sym_sec_cache *cache, | |
1906 | asection *sec, | |
1907 | unsigned long r_symndx) | |
ec338859 | 1908 | { |
ec338859 | 1909 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
a5d1b3b5 | 1910 | asection *s; |
ec338859 | 1911 | |
a5d1b3b5 AM |
1912 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
1913 | { | |
1914 | Elf_Internal_Shdr *symtab_hdr; | |
1915 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
1916 | Elf_External_Sym_Shndx eshndx; | |
1917 | Elf_Internal_Sym isym; | |
ec338859 | 1918 | |
a5d1b3b5 AM |
1919 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1920 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
1921 | &isym, esym, &eshndx) == NULL) | |
1922 | return NULL; | |
9ad5cbcf | 1923 | |
a5d1b3b5 AM |
1924 | if (cache->abfd != abfd) |
1925 | { | |
1926 | memset (cache->indx, -1, sizeof (cache->indx)); | |
1927 | cache->abfd = abfd; | |
1928 | } | |
1929 | cache->indx[ent] = r_symndx; | |
1930 | cache->shndx[ent] = isym.st_shndx; | |
ec338859 | 1931 | } |
a5d1b3b5 AM |
1932 | |
1933 | s = bfd_section_from_elf_index (abfd, cache->shndx[ent]); | |
1934 | if (s != NULL) | |
1935 | return s; | |
1936 | ||
1937 | return sec; | |
ec338859 AM |
1938 | } |
1939 | ||
252b5132 RH |
1940 | /* Given an ELF section number, retrieve the corresponding BFD |
1941 | section. */ | |
1942 | ||
1943 | asection * | |
217aa764 | 1944 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 1945 | { |
9ad5cbcf | 1946 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
1947 | return NULL; |
1948 | return elf_elfsections (abfd)[index]->bfd_section; | |
1949 | } | |
1950 | ||
b35d266b | 1951 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 1952 | { |
0112cd26 NC |
1953 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1954 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1955 | }; |
1956 | ||
b35d266b | 1957 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 1958 | { |
0112cd26 NC |
1959 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1960 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1961 | }; |
1962 | ||
b35d266b | 1963 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 1964 | { |
0112cd26 NC |
1965 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1966 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1967 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
1968 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
1969 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
1970 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
1971 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
1972 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
1973 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
1974 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
1975 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1976 | }; |
1977 | ||
b35d266b | 1978 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 1979 | { |
0112cd26 NC |
1980 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
1981 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
1982 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1983 | }; |
1984 | ||
b35d266b | 1985 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 1986 | { |
0112cd26 NC |
1987 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1988 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1989 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
1990 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
1991 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
1992 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
1993 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
1994 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
1995 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1996 | }; |
1997 | ||
b35d266b | 1998 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 1999 | { |
0112cd26 NC |
2000 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2001 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2002 | }; |
2003 | ||
b35d266b | 2004 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2005 | { |
0112cd26 NC |
2006 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2007 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2008 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2009 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2010 | }; |
2011 | ||
b35d266b | 2012 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2013 | { |
0112cd26 NC |
2014 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2015 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2016 | }; |
2017 | ||
b35d266b | 2018 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2019 | { |
0112cd26 NC |
2020 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2021 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2022 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2023 | }; |
2024 | ||
b35d266b | 2025 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2026 | { |
0112cd26 NC |
2027 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2028 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2029 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2030 | }; |
2031 | ||
b35d266b | 2032 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2033 | { |
0112cd26 NC |
2034 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2035 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2036 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2037 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2038 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2039 | }; |
2040 | ||
b35d266b | 2041 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2042 | { |
0112cd26 NC |
2043 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2044 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2045 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2046 | /* See struct bfd_elf_special_section declaration for the semantics of |
2047 | this special case where .prefix_length != strlen (.prefix). */ | |
2048 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2049 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2050 | }; |
2051 | ||
b35d266b | 2052 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2053 | { |
0112cd26 NC |
2054 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2055 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2056 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2057 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2058 | }; |
2059 | ||
b35d266b | 2060 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2061 | { |
7f4d3958 L |
2062 | special_sections_b, /* 'b' */ |
2063 | special_sections_c, /* 'b' */ | |
2064 | special_sections_d, /* 'd' */ | |
2065 | NULL, /* 'e' */ | |
2066 | special_sections_f, /* 'f' */ | |
2067 | special_sections_g, /* 'g' */ | |
2068 | special_sections_h, /* 'h' */ | |
2069 | special_sections_i, /* 'i' */ | |
2070 | NULL, /* 'j' */ | |
2071 | NULL, /* 'k' */ | |
2072 | special_sections_l, /* 'l' */ | |
2073 | NULL, /* 'm' */ | |
2074 | special_sections_n, /* 'n' */ | |
2075 | NULL, /* 'o' */ | |
2076 | special_sections_p, /* 'p' */ | |
2077 | NULL, /* 'q' */ | |
2078 | special_sections_r, /* 'r' */ | |
2079 | special_sections_s, /* 's' */ | |
2080 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2081 | }; |
2082 | ||
551b43fd AM |
2083 | const struct bfd_elf_special_section * |
2084 | _bfd_elf_get_special_section (const char *name, | |
2085 | const struct bfd_elf_special_section *spec, | |
2086 | unsigned int rela) | |
2f89ff8d L |
2087 | { |
2088 | int i; | |
7f4d3958 | 2089 | int len; |
7f4d3958 | 2090 | |
551b43fd | 2091 | len = strlen (name); |
7f4d3958 | 2092 | |
551b43fd | 2093 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2094 | { |
2095 | int suffix_len; | |
551b43fd | 2096 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2097 | |
2098 | if (len < prefix_len) | |
2099 | continue; | |
551b43fd | 2100 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2101 | continue; |
2102 | ||
551b43fd | 2103 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2104 | if (suffix_len <= 0) |
2105 | { | |
2106 | if (name[prefix_len] != 0) | |
2107 | { | |
2108 | if (suffix_len == 0) | |
2109 | continue; | |
2110 | if (name[prefix_len] != '.' | |
2111 | && (suffix_len == -2 | |
551b43fd | 2112 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2113 | continue; |
2114 | } | |
2115 | } | |
2116 | else | |
2117 | { | |
2118 | if (len < prefix_len + suffix_len) | |
2119 | continue; | |
2120 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2121 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2122 | suffix_len) != 0) |
2123 | continue; | |
2124 | } | |
551b43fd | 2125 | return &spec[i]; |
7dcb9820 | 2126 | } |
2f89ff8d L |
2127 | |
2128 | return NULL; | |
2129 | } | |
2130 | ||
7dcb9820 | 2131 | const struct bfd_elf_special_section * |
29ef7005 | 2132 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2133 | { |
551b43fd AM |
2134 | int i; |
2135 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2136 | const struct elf_backend_data *bed; |
2f89ff8d L |
2137 | |
2138 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2139 | if (sec->name == NULL) |
2140 | return NULL; | |
2f89ff8d | 2141 | |
29ef7005 L |
2142 | bed = get_elf_backend_data (abfd); |
2143 | spec = bed->special_sections; | |
2144 | if (spec) | |
2145 | { | |
2146 | spec = _bfd_elf_get_special_section (sec->name, | |
2147 | bed->special_sections, | |
2148 | sec->use_rela_p); | |
2149 | if (spec != NULL) | |
2150 | return spec; | |
2151 | } | |
2152 | ||
551b43fd AM |
2153 | if (sec->name[0] != '.') |
2154 | return NULL; | |
2f89ff8d | 2155 | |
551b43fd AM |
2156 | i = sec->name[1] - 'b'; |
2157 | if (i < 0 || i > 't' - 'b') | |
2158 | return NULL; | |
2159 | ||
2160 | spec = special_sections[i]; | |
2f89ff8d | 2161 | |
551b43fd AM |
2162 | if (spec == NULL) |
2163 | return NULL; | |
2164 | ||
2165 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2166 | } |
2167 | ||
b34976b6 | 2168 | bfd_boolean |
217aa764 | 2169 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2170 | { |
2171 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2172 | const struct elf_backend_data *bed; |
7dcb9820 | 2173 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2174 | |
f0abc2a1 AM |
2175 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2176 | if (sdata == NULL) | |
2177 | { | |
217aa764 | 2178 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2179 | if (sdata == NULL) |
2180 | return FALSE; | |
217aa764 | 2181 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2182 | } |
bf572ba0 | 2183 | |
551b43fd AM |
2184 | /* Indicate whether or not this section should use RELA relocations. */ |
2185 | bed = get_elf_backend_data (abfd); | |
2186 | sec->use_rela_p = bed->default_use_rela_p; | |
2187 | ||
e843e0f8 L |
2188 | /* When we read a file, we don't need to set ELF section type and |
2189 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2190 | anyway. We will set ELF section type and flags for all linker | |
2191 | created sections. If user specifies BFD section flags, we will | |
2192 | set ELF section type and flags based on BFD section flags in | |
2193 | elf_fake_sections. */ | |
2194 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2195 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2196 | { |
551b43fd | 2197 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2198 | if (ssect != NULL) |
2199 | { | |
2200 | elf_section_type (sec) = ssect->type; | |
2201 | elf_section_flags (sec) = ssect->attr; | |
2202 | } | |
2f89ff8d L |
2203 | } |
2204 | ||
f592407e | 2205 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2206 | } |
2207 | ||
2208 | /* Create a new bfd section from an ELF program header. | |
2209 | ||
2210 | Since program segments have no names, we generate a synthetic name | |
2211 | of the form segment<NUM>, where NUM is generally the index in the | |
2212 | program header table. For segments that are split (see below) we | |
2213 | generate the names segment<NUM>a and segment<NUM>b. | |
2214 | ||
2215 | Note that some program segments may have a file size that is different than | |
2216 | (less than) the memory size. All this means is that at execution the | |
2217 | system must allocate the amount of memory specified by the memory size, | |
2218 | but only initialize it with the first "file size" bytes read from the | |
2219 | file. This would occur for example, with program segments consisting | |
2220 | of combined data+bss. | |
2221 | ||
2222 | To handle the above situation, this routine generates TWO bfd sections | |
2223 | for the single program segment. The first has the length specified by | |
2224 | the file size of the segment, and the second has the length specified | |
2225 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2226 | into its initialized and uninitialized parts. |
252b5132 RH |
2227 | |
2228 | */ | |
2229 | ||
b34976b6 | 2230 | bfd_boolean |
217aa764 AM |
2231 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2232 | Elf_Internal_Phdr *hdr, | |
2233 | int index, | |
2234 | const char *typename) | |
252b5132 RH |
2235 | { |
2236 | asection *newsect; | |
2237 | char *name; | |
2238 | char namebuf[64]; | |
d4c88bbb | 2239 | size_t len; |
252b5132 RH |
2240 | int split; |
2241 | ||
2242 | split = ((hdr->p_memsz > 0) | |
2243 | && (hdr->p_filesz > 0) | |
2244 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2245 | |
2246 | if (hdr->p_filesz > 0) | |
252b5132 | 2247 | { |
d5191d0c AM |
2248 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
2249 | len = strlen (namebuf) + 1; | |
2250 | name = bfd_alloc (abfd, len); | |
2251 | if (!name) | |
2252 | return FALSE; | |
2253 | memcpy (name, namebuf, len); | |
2254 | newsect = bfd_make_section (abfd, name); | |
2255 | if (newsect == NULL) | |
2256 | return FALSE; | |
2257 | newsect->vma = hdr->p_vaddr; | |
2258 | newsect->lma = hdr->p_paddr; | |
2259 | newsect->size = hdr->p_filesz; | |
2260 | newsect->filepos = hdr->p_offset; | |
2261 | newsect->flags |= SEC_HAS_CONTENTS; | |
2262 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2263 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2264 | { |
d5191d0c AM |
2265 | newsect->flags |= SEC_ALLOC; |
2266 | newsect->flags |= SEC_LOAD; | |
2267 | if (hdr->p_flags & PF_X) | |
2268 | { | |
2269 | /* FIXME: all we known is that it has execute PERMISSION, | |
2270 | may be data. */ | |
2271 | newsect->flags |= SEC_CODE; | |
2272 | } | |
2273 | } | |
2274 | if (!(hdr->p_flags & PF_W)) | |
2275 | { | |
2276 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2277 | } |
252b5132 RH |
2278 | } |
2279 | ||
d5191d0c | 2280 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2281 | { |
d5191d0c AM |
2282 | bfd_vma align; |
2283 | ||
2284 | sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : ""); | |
d4c88bbb | 2285 | len = strlen (namebuf) + 1; |
217aa764 | 2286 | name = bfd_alloc (abfd, len); |
252b5132 | 2287 | if (!name) |
b34976b6 | 2288 | return FALSE; |
d4c88bbb | 2289 | memcpy (name, namebuf, len); |
252b5132 RH |
2290 | newsect = bfd_make_section (abfd, name); |
2291 | if (newsect == NULL) | |
b34976b6 | 2292 | return FALSE; |
252b5132 RH |
2293 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2294 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2295 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2296 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2297 | align = newsect->vma & -newsect->vma; | |
2298 | if (align == 0 || align > hdr->p_align) | |
2299 | align = hdr->p_align; | |
2300 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2301 | if (hdr->p_type == PT_LOAD) |
2302 | { | |
d5191d0c AM |
2303 | /* Hack for gdb. Segments that have not been modified do |
2304 | not have their contents written to a core file, on the | |
2305 | assumption that a debugger can find the contents in the | |
2306 | executable. We flag this case by setting the fake | |
2307 | section size to zero. Note that "real" bss sections will | |
2308 | always have their contents dumped to the core file. */ | |
2309 | if (bfd_get_format (abfd) == bfd_core) | |
2310 | newsect->size = 0; | |
252b5132 RH |
2311 | newsect->flags |= SEC_ALLOC; |
2312 | if (hdr->p_flags & PF_X) | |
2313 | newsect->flags |= SEC_CODE; | |
2314 | } | |
2315 | if (!(hdr->p_flags & PF_W)) | |
2316 | newsect->flags |= SEC_READONLY; | |
2317 | } | |
2318 | ||
b34976b6 | 2319 | return TRUE; |
252b5132 RH |
2320 | } |
2321 | ||
b34976b6 | 2322 | bfd_boolean |
217aa764 | 2323 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2324 | { |
9c5bfbb7 | 2325 | const struct elf_backend_data *bed; |
20cfcaae NC |
2326 | |
2327 | switch (hdr->p_type) | |
2328 | { | |
2329 | case PT_NULL: | |
2330 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2331 | ||
2332 | case PT_LOAD: | |
2333 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2334 | ||
2335 | case PT_DYNAMIC: | |
2336 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2337 | ||
2338 | case PT_INTERP: | |
2339 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2340 | ||
2341 | case PT_NOTE: | |
2342 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2343 | return FALSE; |
217aa764 | 2344 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2345 | return FALSE; |
2346 | return TRUE; | |
20cfcaae NC |
2347 | |
2348 | case PT_SHLIB: | |
2349 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2350 | ||
2351 | case PT_PHDR: | |
2352 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2353 | ||
811072d8 RM |
2354 | case PT_GNU_EH_FRAME: |
2355 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2356 | "eh_frame_hdr"); | |
2357 | ||
9ee5e499 JJ |
2358 | case PT_GNU_STACK: |
2359 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2360 | ||
8c37241b JJ |
2361 | case PT_GNU_RELRO: |
2362 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2363 | ||
20cfcaae | 2364 | default: |
8c1acd09 | 2365 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2366 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2367 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2368 | } |
2369 | } | |
2370 | ||
23bc299b | 2371 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2372 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2373 | relocations; otherwise, we use REL relocations. */ |
2374 | ||
b34976b6 | 2375 | bfd_boolean |
217aa764 AM |
2376 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2377 | Elf_Internal_Shdr *rel_hdr, | |
2378 | asection *asect, | |
2379 | bfd_boolean use_rela_p) | |
23bc299b MM |
2380 | { |
2381 | char *name; | |
9c5bfbb7 | 2382 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2383 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2384 | |
dc810e39 | 2385 | name = bfd_alloc (abfd, amt); |
23bc299b | 2386 | if (name == NULL) |
b34976b6 | 2387 | return FALSE; |
23bc299b MM |
2388 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2389 | rel_hdr->sh_name = | |
2b0f7ef9 | 2390 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2391 | FALSE); |
23bc299b | 2392 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2393 | return FALSE; |
23bc299b MM |
2394 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2395 | rel_hdr->sh_entsize = (use_rela_p | |
2396 | ? bed->s->sizeof_rela | |
2397 | : bed->s->sizeof_rel); | |
45d6a902 | 2398 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2399 | rel_hdr->sh_flags = 0; |
2400 | rel_hdr->sh_addr = 0; | |
2401 | rel_hdr->sh_size = 0; | |
2402 | rel_hdr->sh_offset = 0; | |
2403 | ||
b34976b6 | 2404 | return TRUE; |
23bc299b MM |
2405 | } |
2406 | ||
252b5132 RH |
2407 | /* Set up an ELF internal section header for a section. */ |
2408 | ||
252b5132 | 2409 | static void |
217aa764 | 2410 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2411 | { |
9c5bfbb7 | 2412 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2413 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2414 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2415 | unsigned int sh_type; |
252b5132 RH |
2416 | |
2417 | if (*failedptr) | |
2418 | { | |
2419 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2420 | loop. */ |
252b5132 RH |
2421 | return; |
2422 | } | |
2423 | ||
2424 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2425 | ||
e57b5356 AM |
2426 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2427 | asect->name, FALSE); | |
2428 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2429 | { |
b34976b6 | 2430 | *failedptr = TRUE; |
252b5132 RH |
2431 | return; |
2432 | } | |
2433 | ||
a4d8e49b | 2434 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2435 | |
2436 | if ((asect->flags & SEC_ALLOC) != 0 | |
2437 | || asect->user_set_vma) | |
2438 | this_hdr->sh_addr = asect->vma; | |
2439 | else | |
2440 | this_hdr->sh_addr = 0; | |
2441 | ||
2442 | this_hdr->sh_offset = 0; | |
eea6121a | 2443 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2444 | this_hdr->sh_link = 0; |
2445 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2446 | /* The sh_entsize and sh_info fields may have been set already by | |
2447 | copy_private_section_data. */ | |
2448 | ||
2449 | this_hdr->bfd_section = asect; | |
2450 | this_hdr->contents = NULL; | |
2451 | ||
3cddba1e L |
2452 | /* If the section type is unspecified, we set it based on |
2453 | asect->flags. */ | |
2454 | if (this_hdr->sh_type == SHT_NULL) | |
2455 | { | |
45c5e9ed | 2456 | if ((asect->flags & SEC_GROUP) != 0) |
ccd2ec6a | 2457 | this_hdr->sh_type = SHT_GROUP; |
45c5e9ed | 2458 | else if ((asect->flags & SEC_ALLOC) != 0 |
1ea63fd2 AM |
2459 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2460 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
3cddba1e L |
2461 | this_hdr->sh_type = SHT_NOBITS; |
2462 | else | |
2463 | this_hdr->sh_type = SHT_PROGBITS; | |
2464 | } | |
2465 | ||
2f89ff8d | 2466 | switch (this_hdr->sh_type) |
252b5132 | 2467 | { |
2f89ff8d | 2468 | default: |
2f89ff8d L |
2469 | break; |
2470 | ||
2471 | case SHT_STRTAB: | |
2472 | case SHT_INIT_ARRAY: | |
2473 | case SHT_FINI_ARRAY: | |
2474 | case SHT_PREINIT_ARRAY: | |
2475 | case SHT_NOTE: | |
2476 | case SHT_NOBITS: | |
2477 | case SHT_PROGBITS: | |
2478 | break; | |
2479 | ||
2480 | case SHT_HASH: | |
c7ac6ff8 | 2481 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2482 | break; |
5de3bf90 | 2483 | |
2f89ff8d | 2484 | case SHT_DYNSYM: |
252b5132 | 2485 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2486 | break; |
2487 | ||
2488 | case SHT_DYNAMIC: | |
252b5132 | 2489 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2490 | break; |
2491 | ||
2492 | case SHT_RELA: | |
2493 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2494 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2495 | break; | |
2496 | ||
2497 | case SHT_REL: | |
2498 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2499 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2500 | break; | |
2501 | ||
2502 | case SHT_GNU_versym: | |
252b5132 | 2503 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2504 | break; |
2505 | ||
2506 | case SHT_GNU_verdef: | |
252b5132 RH |
2507 | this_hdr->sh_entsize = 0; |
2508 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2509 | cverdefs. The linker will set cverdefs, but sh_info will be |
2510 | zero. */ | |
252b5132 RH |
2511 | if (this_hdr->sh_info == 0) |
2512 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2513 | else | |
2514 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2515 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2516 | break; |
2517 | ||
2518 | case SHT_GNU_verneed: | |
252b5132 RH |
2519 | this_hdr->sh_entsize = 0; |
2520 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2521 | cverrefs. The linker will set cverrefs, but sh_info will be |
2522 | zero. */ | |
252b5132 RH |
2523 | if (this_hdr->sh_info == 0) |
2524 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2525 | else | |
2526 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2527 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2528 | break; |
2529 | ||
2530 | case SHT_GROUP: | |
1783205a | 2531 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2532 | break; |
fdc90cb4 JJ |
2533 | |
2534 | case SHT_GNU_HASH: | |
2535 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2536 | break; | |
dbb410c3 | 2537 | } |
252b5132 RH |
2538 | |
2539 | if ((asect->flags & SEC_ALLOC) != 0) | |
2540 | this_hdr->sh_flags |= SHF_ALLOC; | |
2541 | if ((asect->flags & SEC_READONLY) == 0) | |
2542 | this_hdr->sh_flags |= SHF_WRITE; | |
2543 | if ((asect->flags & SEC_CODE) != 0) | |
2544 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2545 | if ((asect->flags & SEC_MERGE) != 0) |
2546 | { | |
2547 | this_hdr->sh_flags |= SHF_MERGE; | |
2548 | this_hdr->sh_entsize = asect->entsize; | |
2549 | if ((asect->flags & SEC_STRINGS) != 0) | |
2550 | this_hdr->sh_flags |= SHF_STRINGS; | |
2551 | } | |
1126897b | 2552 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2553 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2554 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2555 | { |
2556 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2557 | if (asect->size == 0 |
2558 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2559 | { |
3a800eb9 | 2560 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2561 | |
704afa60 | 2562 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2563 | if (o != NULL) |
2564 | { | |
704afa60 | 2565 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2566 | if (this_hdr->sh_size != 0) |
2567 | this_hdr->sh_type = SHT_NOBITS; | |
2568 | } | |
704afa60 JJ |
2569 | } |
2570 | } | |
252b5132 RH |
2571 | |
2572 | /* Check for processor-specific section types. */ | |
0414f35b | 2573 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2574 | if (bed->elf_backend_fake_sections |
2575 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2576 | *failedptr = TRUE; |
252b5132 | 2577 | |
42bb2e33 | 2578 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2579 | { |
2580 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2581 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2582 | this_hdr->sh_type = sh_type; |
2583 | } | |
2584 | ||
252b5132 | 2585 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2586 | SHT_REL[A] section. If two relocation sections are required for |
2587 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2588 | create the other. */ |
23bc299b | 2589 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2590 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2591 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2592 | asect, |
68bfbfcc | 2593 | asect->use_rela_p)) |
b34976b6 | 2594 | *failedptr = TRUE; |
252b5132 RH |
2595 | } |
2596 | ||
dbb410c3 AM |
2597 | /* Fill in the contents of a SHT_GROUP section. */ |
2598 | ||
1126897b | 2599 | void |
217aa764 | 2600 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2601 | { |
217aa764 | 2602 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2603 | unsigned long symindx; |
9dce4196 | 2604 | asection *elt, *first; |
dbb410c3 | 2605 | unsigned char *loc; |
b34976b6 | 2606 | bfd_boolean gas; |
dbb410c3 | 2607 | |
7e4111ad L |
2608 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2609 | elfxx-ia64.c. */ | |
2610 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2611 | || *failedptr) |
2612 | return; | |
2613 | ||
1126897b AM |
2614 | symindx = 0; |
2615 | if (elf_group_id (sec) != NULL) | |
2616 | symindx = elf_group_id (sec)->udata.i; | |
2617 | ||
2618 | if (symindx == 0) | |
2619 | { | |
2620 | /* If called from the assembler, swap_out_syms will have set up | |
2621 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2622 | if (elf_section_syms (abfd) != NULL) | |
2623 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2624 | else | |
2625 | symindx = sec->target_index; | |
2626 | } | |
dbb410c3 AM |
2627 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2628 | ||
1126897b | 2629 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2630 | gas = TRUE; |
dbb410c3 AM |
2631 | if (sec->contents == NULL) |
2632 | { | |
b34976b6 | 2633 | gas = FALSE; |
eea6121a | 2634 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2635 | |
2636 | /* Arrange for the section to be written out. */ | |
2637 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2638 | if (sec->contents == NULL) |
2639 | { | |
b34976b6 | 2640 | *failedptr = TRUE; |
dbb410c3 AM |
2641 | return; |
2642 | } | |
2643 | } | |
2644 | ||
eea6121a | 2645 | loc = sec->contents + sec->size; |
dbb410c3 | 2646 | |
9dce4196 AM |
2647 | /* Get the pointer to the first section in the group that gas |
2648 | squirreled away here. objcopy arranges for this to be set to the | |
2649 | start of the input section group. */ | |
2650 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2651 | |
2652 | /* First element is a flag word. Rest of section is elf section | |
2653 | indices for all the sections of the group. Write them backwards | |
2654 | just to keep the group in the same order as given in .section | |
2655 | directives, not that it matters. */ | |
2656 | while (elt != NULL) | |
2657 | { | |
9dce4196 AM |
2658 | asection *s; |
2659 | unsigned int idx; | |
2660 | ||
dbb410c3 | 2661 | loc -= 4; |
9dce4196 AM |
2662 | s = elt; |
2663 | if (!gas) | |
2664 | s = s->output_section; | |
2665 | idx = 0; | |
2666 | if (s != NULL) | |
2667 | idx = elf_section_data (s)->this_idx; | |
2668 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2669 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2670 | if (elt == first) |
2671 | break; | |
dbb410c3 AM |
2672 | } |
2673 | ||
3d7f7666 | 2674 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2675 | abort (); |
dbb410c3 | 2676 | |
9dce4196 | 2677 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2678 | } |
2679 | ||
252b5132 RH |
2680 | /* Assign all ELF section numbers. The dummy first section is handled here |
2681 | too. The link/info pointers for the standard section types are filled | |
2682 | in here too, while we're at it. */ | |
2683 | ||
b34976b6 | 2684 | static bfd_boolean |
da9f89d4 | 2685 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2686 | { |
2687 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2688 | asection *sec; | |
2b0f7ef9 | 2689 | unsigned int section_number, secn; |
252b5132 | 2690 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2691 | struct bfd_elf_section_data *d; |
252b5132 RH |
2692 | |
2693 | section_number = 1; | |
2694 | ||
2b0f7ef9 JJ |
2695 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2696 | ||
da9f89d4 L |
2697 | /* SHT_GROUP sections are in relocatable files only. */ |
2698 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2699 | { |
da9f89d4 | 2700 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2701 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2702 | { |
5daa8fe7 | 2703 | d = elf_section_data (sec); |
da9f89d4 L |
2704 | |
2705 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2706 | { |
5daa8fe7 | 2707 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2708 | { |
2709 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2710 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2711 | abfd->section_count--; |
da9f89d4 | 2712 | } |
08a40648 | 2713 | else |
da9f89d4 L |
2714 | { |
2715 | if (section_number == SHN_LORESERVE) | |
2716 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2717 | d->this_idx = section_number++; | |
2718 | } | |
2719 | } | |
47cc2cf5 PB |
2720 | } |
2721 | } | |
2722 | ||
2723 | for (sec = abfd->sections; sec; sec = sec->next) | |
2724 | { | |
2725 | d = elf_section_data (sec); | |
2726 | ||
2727 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2728 | { | |
2729 | if (section_number == SHN_LORESERVE) | |
2730 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2731 | d->this_idx = section_number++; | |
2732 | } | |
2b0f7ef9 | 2733 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2734 | if ((sec->flags & SEC_RELOC) == 0) |
2735 | d->rel_idx = 0; | |
2736 | else | |
2b0f7ef9 | 2737 | { |
9ad5cbcf AM |
2738 | if (section_number == SHN_LORESERVE) |
2739 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2740 | d->rel_idx = section_number++; |
2741 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2742 | } | |
23bc299b MM |
2743 | |
2744 | if (d->rel_hdr2) | |
2b0f7ef9 | 2745 | { |
9ad5cbcf AM |
2746 | if (section_number == SHN_LORESERVE) |
2747 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2748 | d->rel_idx2 = section_number++; |
2749 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2750 | } | |
23bc299b MM |
2751 | else |
2752 | d->rel_idx2 = 0; | |
252b5132 RH |
2753 | } |
2754 | ||
9ad5cbcf AM |
2755 | if (section_number == SHN_LORESERVE) |
2756 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2757 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2758 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2759 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2760 | |
2761 | if (bfd_get_symcount (abfd) > 0) | |
2762 | { | |
9ad5cbcf AM |
2763 | if (section_number == SHN_LORESERVE) |
2764 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2765 | t->symtab_section = section_number++; |
2b0f7ef9 | 2766 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2767 | if (section_number > SHN_LORESERVE - 2) |
2768 | { | |
2769 | if (section_number == SHN_LORESERVE) | |
2770 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2771 | t->symtab_shndx_section = section_number++; | |
2772 | t->symtab_shndx_hdr.sh_name | |
2773 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2774 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2775 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2776 | return FALSE; |
9ad5cbcf AM |
2777 | } |
2778 | if (section_number == SHN_LORESERVE) | |
2779 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2780 | t->strtab_section = section_number++; |
2b0f7ef9 | 2781 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2782 | } |
2783 | ||
2b0f7ef9 JJ |
2784 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2785 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2786 | |
2787 | elf_numsections (abfd) = section_number; | |
252b5132 | 2788 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2789 | if (section_number > SHN_LORESERVE) |
2790 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2791 | |
2792 | /* Set up the list of section header pointers, in agreement with the | |
2793 | indices. */ | |
d0fb9a8d | 2794 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 2795 | if (i_shdrp == NULL) |
b34976b6 | 2796 | return FALSE; |
252b5132 | 2797 | |
d0fb9a8d | 2798 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
2799 | if (i_shdrp[0] == NULL) |
2800 | { | |
2801 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2802 | return FALSE; |
252b5132 | 2803 | } |
252b5132 RH |
2804 | |
2805 | elf_elfsections (abfd) = i_shdrp; | |
2806 | ||
2807 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2808 | if (bfd_get_symcount (abfd) > 0) | |
2809 | { | |
2810 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2811 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2812 | { | |
2813 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2814 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2815 | } | |
252b5132 RH |
2816 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2817 | t->symtab_hdr.sh_link = t->strtab_section; | |
2818 | } | |
38ce5b11 | 2819 | |
252b5132 RH |
2820 | for (sec = abfd->sections; sec; sec = sec->next) |
2821 | { | |
2822 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2823 | asection *s; | |
2824 | const char *name; | |
2825 | ||
2826 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2827 | if (d->rel_idx != 0) | |
2828 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2829 | if (d->rel_idx2 != 0) |
2830 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2831 | |
2832 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2833 | ||
2834 | /* sh_link of a reloc section is the section index of the symbol | |
2835 | table. sh_info is the section index of the section to which | |
2836 | the relocation entries apply. */ | |
2837 | if (d->rel_idx != 0) | |
2838 | { | |
2839 | d->rel_hdr.sh_link = t->symtab_section; | |
2840 | d->rel_hdr.sh_info = d->this_idx; | |
2841 | } | |
23bc299b MM |
2842 | if (d->rel_idx2 != 0) |
2843 | { | |
2844 | d->rel_hdr2->sh_link = t->symtab_section; | |
2845 | d->rel_hdr2->sh_info = d->this_idx; | |
2846 | } | |
252b5132 | 2847 | |
38ce5b11 L |
2848 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2849 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2850 | { | |
2851 | s = elf_linked_to_section (sec); | |
2852 | if (s) | |
38ce5b11 | 2853 | { |
f2876037 | 2854 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 2855 | if (link_info != NULL) |
38ce5b11 | 2856 | { |
f2876037 | 2857 | /* Check discarded linkonce section. */ |
ccd2ec6a | 2858 | if (elf_discarded_section (s)) |
38ce5b11 | 2859 | { |
ccd2ec6a L |
2860 | asection *kept; |
2861 | (*_bfd_error_handler) | |
2862 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2863 | abfd, d->this_hdr.bfd_section, | |
2864 | s, s->owner); | |
2865 | /* Point to the kept section if it has the same | |
2866 | size as the discarded one. */ | |
c0f00686 | 2867 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 2868 | if (kept == NULL) |
185d09ad | 2869 | { |
ccd2ec6a L |
2870 | bfd_set_error (bfd_error_bad_value); |
2871 | return FALSE; | |
185d09ad | 2872 | } |
ccd2ec6a | 2873 | s = kept; |
38ce5b11 | 2874 | } |
e424ecc8 | 2875 | |
ccd2ec6a L |
2876 | s = s->output_section; |
2877 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 2878 | } |
f2876037 L |
2879 | else |
2880 | { | |
2881 | /* Handle objcopy. */ | |
2882 | if (s->output_section == NULL) | |
2883 | { | |
2884 | (*_bfd_error_handler) | |
2885 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
2886 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
2887 | bfd_set_error (bfd_error_bad_value); | |
2888 | return FALSE; | |
2889 | } | |
2890 | s = s->output_section; | |
2891 | } | |
ccd2ec6a L |
2892 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
2893 | } | |
2894 | else | |
2895 | { | |
2896 | /* PR 290: | |
2897 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2898 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
2899 | sh_info fields. Hence we could get the situation | |
08a40648 | 2900 | where s is NULL. */ |
ccd2ec6a L |
2901 | const struct elf_backend_data *bed |
2902 | = get_elf_backend_data (abfd); | |
2903 | if (bed->link_order_error_handler) | |
2904 | bed->link_order_error_handler | |
2905 | (_("%B: warning: sh_link not set for section `%A'"), | |
2906 | abfd, sec); | |
38ce5b11 L |
2907 | } |
2908 | } | |
2909 | ||
252b5132 RH |
2910 | switch (d->this_hdr.sh_type) |
2911 | { | |
2912 | case SHT_REL: | |
2913 | case SHT_RELA: | |
2914 | /* A reloc section which we are treating as a normal BFD | |
2915 | section. sh_link is the section index of the symbol | |
2916 | table. sh_info is the section index of the section to | |
2917 | which the relocation entries apply. We assume that an | |
2918 | allocated reloc section uses the dynamic symbol table. | |
2919 | FIXME: How can we be sure? */ | |
2920 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2921 | if (s != NULL) | |
2922 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2923 | ||
2924 | /* We look up the section the relocs apply to by name. */ | |
2925 | name = sec->name; | |
2926 | if (d->this_hdr.sh_type == SHT_REL) | |
2927 | name += 4; | |
2928 | else | |
2929 | name += 5; | |
2930 | s = bfd_get_section_by_name (abfd, name); | |
2931 | if (s != NULL) | |
2932 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
2933 | break; | |
2934 | ||
2935 | case SHT_STRTAB: | |
2936 | /* We assume that a section named .stab*str is a stabs | |
2937 | string section. We look for a section with the same name | |
2938 | but without the trailing ``str'', and set its sh_link | |
2939 | field to point to this section. */ | |
0112cd26 | 2940 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
2941 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
2942 | { | |
2943 | size_t len; | |
2944 | char *alc; | |
2945 | ||
2946 | len = strlen (sec->name); | |
217aa764 | 2947 | alc = bfd_malloc (len - 2); |
252b5132 | 2948 | if (alc == NULL) |
b34976b6 | 2949 | return FALSE; |
d4c88bbb | 2950 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
2951 | alc[len - 3] = '\0'; |
2952 | s = bfd_get_section_by_name (abfd, alc); | |
2953 | free (alc); | |
2954 | if (s != NULL) | |
2955 | { | |
2956 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
2957 | ||
2958 | /* This is a .stab section. */ | |
0594c12d AM |
2959 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
2960 | elf_section_data (s)->this_hdr.sh_entsize | |
2961 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
2962 | } |
2963 | } | |
2964 | break; | |
2965 | ||
2966 | case SHT_DYNAMIC: | |
2967 | case SHT_DYNSYM: | |
2968 | case SHT_GNU_verneed: | |
2969 | case SHT_GNU_verdef: | |
2970 | /* sh_link is the section header index of the string table | |
2971 | used for the dynamic entries, or the symbol table, or the | |
2972 | version strings. */ | |
2973 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
2974 | if (s != NULL) | |
2975 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2976 | break; | |
2977 | ||
7f1204bb JJ |
2978 | case SHT_GNU_LIBLIST: |
2979 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
2980 | list used for the dynamic entries, or the symbol table, or |
2981 | the version strings. */ | |
7f1204bb JJ |
2982 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
2983 | ? ".dynstr" : ".gnu.libstr"); | |
2984 | if (s != NULL) | |
2985 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2986 | break; | |
2987 | ||
252b5132 | 2988 | case SHT_HASH: |
fdc90cb4 | 2989 | case SHT_GNU_HASH: |
252b5132 RH |
2990 | case SHT_GNU_versym: |
2991 | /* sh_link is the section header index of the symbol table | |
2992 | this hash table or version table is for. */ | |
2993 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2994 | if (s != NULL) | |
2995 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2996 | break; | |
dbb410c3 AM |
2997 | |
2998 | case SHT_GROUP: | |
2999 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3000 | } |
3001 | } | |
3002 | ||
2b0f7ef9 | 3003 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3004 | if (i_shdrp[secn] == NULL) |
3005 | i_shdrp[secn] = i_shdrp[0]; | |
3006 | else | |
3007 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3008 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3009 | return TRUE; |
252b5132 RH |
3010 | } |
3011 | ||
3012 | /* Map symbol from it's internal number to the external number, moving | |
3013 | all local symbols to be at the head of the list. */ | |
3014 | ||
5372391b | 3015 | static bfd_boolean |
217aa764 | 3016 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3017 | { |
3018 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3019 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3020 | if (bed->elf_backend_sym_is_global) |
3021 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3022 | |
3023 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3024 | || bfd_is_und_section (bfd_get_section (sym)) | |
3025 | || bfd_is_com_section (bfd_get_section (sym))); | |
3026 | } | |
3027 | ||
5372391b AM |
3028 | /* Don't output section symbols for sections that are not going to be |
3029 | output. Also, don't output section symbols for reloc and other | |
3030 | special sections. */ | |
3031 | ||
3032 | static bfd_boolean | |
3033 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3034 | { | |
3035 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3036 | && (sym->value != 0 | |
3037 | || (sym->section->owner != abfd | |
3038 | && (sym->section->output_section->owner != abfd | |
3039 | || sym->section->output_offset != 0)))); | |
3040 | } | |
3041 | ||
b34976b6 | 3042 | static bfd_boolean |
217aa764 | 3043 | elf_map_symbols (bfd *abfd) |
252b5132 | 3044 | { |
dc810e39 | 3045 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3046 | asymbol **syms = bfd_get_outsymbols (abfd); |
3047 | asymbol **sect_syms; | |
dc810e39 AM |
3048 | unsigned int num_locals = 0; |
3049 | unsigned int num_globals = 0; | |
3050 | unsigned int num_locals2 = 0; | |
3051 | unsigned int num_globals2 = 0; | |
252b5132 | 3052 | int max_index = 0; |
dc810e39 | 3053 | unsigned int idx; |
252b5132 RH |
3054 | asection *asect; |
3055 | asymbol **new_syms; | |
252b5132 RH |
3056 | |
3057 | #ifdef DEBUG | |
3058 | fprintf (stderr, "elf_map_symbols\n"); | |
3059 | fflush (stderr); | |
3060 | #endif | |
3061 | ||
252b5132 RH |
3062 | for (asect = abfd->sections; asect; asect = asect->next) |
3063 | { | |
3064 | if (max_index < asect->index) | |
3065 | max_index = asect->index; | |
3066 | } | |
3067 | ||
3068 | max_index++; | |
d0fb9a8d | 3069 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3070 | if (sect_syms == NULL) |
b34976b6 | 3071 | return FALSE; |
252b5132 | 3072 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3073 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3074 | |
079e9a2f AM |
3075 | /* Init sect_syms entries for any section symbols we have already |
3076 | decided to output. */ | |
252b5132 RH |
3077 | for (idx = 0; idx < symcount; idx++) |
3078 | { | |
dc810e39 | 3079 | asymbol *sym = syms[idx]; |
c044fabd | 3080 | |
252b5132 | 3081 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3082 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3083 | { |
5372391b | 3084 | asection *sec = sym->section; |
252b5132 | 3085 | |
5372391b AM |
3086 | if (sec->owner != abfd) |
3087 | sec = sec->output_section; | |
252b5132 | 3088 | |
5372391b | 3089 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3090 | } |
3091 | } | |
3092 | ||
252b5132 RH |
3093 | /* Classify all of the symbols. */ |
3094 | for (idx = 0; idx < symcount; idx++) | |
3095 | { | |
5372391b AM |
3096 | if (ignore_section_sym (abfd, syms[idx])) |
3097 | continue; | |
252b5132 RH |
3098 | if (!sym_is_global (abfd, syms[idx])) |
3099 | num_locals++; | |
3100 | else | |
3101 | num_globals++; | |
3102 | } | |
079e9a2f | 3103 | |
5372391b | 3104 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3105 | sections will already have a section symbol in outsymbols, but |
3106 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3107 | at least in that case. */ | |
252b5132 RH |
3108 | for (asect = abfd->sections; asect; asect = asect->next) |
3109 | { | |
079e9a2f | 3110 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3111 | { |
079e9a2f | 3112 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3113 | num_locals++; |
3114 | else | |
3115 | num_globals++; | |
252b5132 RH |
3116 | } |
3117 | } | |
3118 | ||
3119 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3120 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3121 | |
252b5132 | 3122 | if (new_syms == NULL) |
b34976b6 | 3123 | return FALSE; |
252b5132 RH |
3124 | |
3125 | for (idx = 0; idx < symcount; idx++) | |
3126 | { | |
3127 | asymbol *sym = syms[idx]; | |
dc810e39 | 3128 | unsigned int i; |
252b5132 | 3129 | |
5372391b AM |
3130 | if (ignore_section_sym (abfd, sym)) |
3131 | continue; | |
252b5132 RH |
3132 | if (!sym_is_global (abfd, sym)) |
3133 | i = num_locals2++; | |
3134 | else | |
3135 | i = num_locals + num_globals2++; | |
3136 | new_syms[i] = sym; | |
3137 | sym->udata.i = i + 1; | |
3138 | } | |
3139 | for (asect = abfd->sections; asect; asect = asect->next) | |
3140 | { | |
079e9a2f | 3141 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3142 | { |
079e9a2f | 3143 | asymbol *sym = asect->symbol; |
dc810e39 | 3144 | unsigned int i; |
252b5132 | 3145 | |
079e9a2f | 3146 | sect_syms[asect->index] = sym; |
252b5132 RH |
3147 | if (!sym_is_global (abfd, sym)) |
3148 | i = num_locals2++; | |
3149 | else | |
3150 | i = num_locals + num_globals2++; | |
3151 | new_syms[i] = sym; | |
3152 | sym->udata.i = i + 1; | |
3153 | } | |
3154 | } | |
3155 | ||
3156 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3157 | ||
3158 | elf_num_locals (abfd) = num_locals; | |
3159 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3160 | return TRUE; |
252b5132 RH |
3161 | } |
3162 | ||
3163 | /* Align to the maximum file alignment that could be required for any | |
3164 | ELF data structure. */ | |
3165 | ||
268b6b39 | 3166 | static inline file_ptr |
217aa764 | 3167 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3168 | { |
3169 | return (off + align - 1) & ~(align - 1); | |
3170 | } | |
3171 | ||
3172 | /* Assign a file position to a section, optionally aligning to the | |
3173 | required section alignment. */ | |
3174 | ||
217aa764 AM |
3175 | file_ptr |
3176 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3177 | file_ptr offset, | |
3178 | bfd_boolean align) | |
252b5132 RH |
3179 | { |
3180 | if (align) | |
3181 | { | |
3182 | unsigned int al; | |
3183 | ||
3184 | al = i_shdrp->sh_addralign; | |
3185 | if (al > 1) | |
3186 | offset = BFD_ALIGN (offset, al); | |
3187 | } | |
3188 | i_shdrp->sh_offset = offset; | |
3189 | if (i_shdrp->bfd_section != NULL) | |
3190 | i_shdrp->bfd_section->filepos = offset; | |
3191 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3192 | offset += i_shdrp->sh_size; | |
3193 | return offset; | |
3194 | } | |
3195 | ||
3196 | /* Compute the file positions we are going to put the sections at, and | |
3197 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3198 | is not NULL, this is being called by the ELF backend linker. */ | |
3199 | ||
b34976b6 | 3200 | bfd_boolean |
217aa764 AM |
3201 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3202 | struct bfd_link_info *link_info) | |
252b5132 | 3203 | { |
9c5bfbb7 | 3204 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3205 | bfd_boolean failed; |
4b6c0f2f | 3206 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3207 | Elf_Internal_Shdr *shstrtab_hdr; |
3208 | ||
3209 | if (abfd->output_has_begun) | |
b34976b6 | 3210 | return TRUE; |
252b5132 RH |
3211 | |
3212 | /* Do any elf backend specific processing first. */ | |
3213 | if (bed->elf_backend_begin_write_processing) | |
3214 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3215 | ||
3216 | if (! prep_headers (abfd)) | |
b34976b6 | 3217 | return FALSE; |
252b5132 | 3218 | |
e6c51ed4 NC |
3219 | /* Post process the headers if necessary. */ |
3220 | if (bed->elf_backend_post_process_headers) | |
3221 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3222 | ||
b34976b6 | 3223 | failed = FALSE; |
252b5132 RH |
3224 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3225 | if (failed) | |
b34976b6 | 3226 | return FALSE; |
252b5132 | 3227 | |
da9f89d4 | 3228 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3229 | return FALSE; |
252b5132 RH |
3230 | |
3231 | /* The backend linker builds symbol table information itself. */ | |
3232 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3233 | { | |
3234 | /* Non-zero if doing a relocatable link. */ | |
3235 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3236 | ||
3237 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3238 | return FALSE; |
252b5132 RH |
3239 | } |
3240 | ||
1126897b | 3241 | if (link_info == NULL) |
dbb410c3 | 3242 | { |
1126897b | 3243 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3244 | if (failed) |
b34976b6 | 3245 | return FALSE; |
dbb410c3 AM |
3246 | } |
3247 | ||
252b5132 RH |
3248 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3249 | /* sh_name was set in prep_headers. */ | |
3250 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3251 | shstrtab_hdr->sh_flags = 0; | |
3252 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3253 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3254 | shstrtab_hdr->sh_entsize = 0; |
3255 | shstrtab_hdr->sh_link = 0; | |
3256 | shstrtab_hdr->sh_info = 0; | |
3257 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3258 | shstrtab_hdr->sh_addralign = 1; | |
3259 | ||
c84fca4d | 3260 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3261 | return FALSE; |
252b5132 RH |
3262 | |
3263 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3264 | { | |
3265 | file_ptr off; | |
3266 | Elf_Internal_Shdr *hdr; | |
3267 | ||
3268 | off = elf_tdata (abfd)->next_file_pos; | |
3269 | ||
3270 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3271 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3272 | |
9ad5cbcf AM |
3273 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3274 | if (hdr->sh_size != 0) | |
b34976b6 | 3275 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3276 | |
252b5132 | 3277 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3278 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3279 | |
3280 | elf_tdata (abfd)->next_file_pos = off; | |
3281 | ||
3282 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3283 | out. */ |
252b5132 RH |
3284 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3285 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3286 | return FALSE; |
252b5132 RH |
3287 | _bfd_stringtab_free (strtab); |
3288 | } | |
3289 | ||
b34976b6 | 3290 | abfd->output_has_begun = TRUE; |
252b5132 | 3291 | |
b34976b6 | 3292 | return TRUE; |
252b5132 RH |
3293 | } |
3294 | ||
8ded5a0f AM |
3295 | /* Make an initial estimate of the size of the program header. If we |
3296 | get the number wrong here, we'll redo section placement. */ | |
3297 | ||
3298 | static bfd_size_type | |
3299 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3300 | { | |
3301 | size_t segs; | |
3302 | asection *s; | |
3303 | const struct elf_backend_data *bed; | |
3304 | ||
3305 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3306 | and one for data. */ | |
3307 | segs = 2; | |
3308 | ||
3309 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3310 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3311 | { | |
3312 | /* If we have a loadable interpreter section, we need a | |
3313 | PT_INTERP segment. In this case, assume we also need a | |
3314 | PT_PHDR segment, although that may not be true for all | |
3315 | targets. */ | |
3316 | segs += 2; | |
3317 | } | |
3318 | ||
3319 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3320 | { | |
3321 | /* We need a PT_DYNAMIC segment. */ | |
3322 | ++segs; | |
08a40648 | 3323 | |
c9df6640 L |
3324 | if (elf_tdata (abfd)->relro) |
3325 | { | |
3326 | /* We need a PT_GNU_RELRO segment only when there is a | |
3327 | PT_DYNAMIC segment. */ | |
3328 | ++segs; | |
3329 | } | |
8ded5a0f AM |
3330 | } |
3331 | ||
3332 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3333 | { | |
3334 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3335 | ++segs; | |
3336 | } | |
3337 | ||
3338 | if (elf_tdata (abfd)->stack_flags) | |
3339 | { | |
3340 | /* We need a PT_GNU_STACK segment. */ | |
3341 | ++segs; | |
3342 | } | |
3343 | ||
8ded5a0f AM |
3344 | for (s = abfd->sections; s != NULL; s = s->next) |
3345 | { | |
3346 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3347 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3348 | { |
3349 | /* We need a PT_NOTE segment. */ | |
3350 | ++segs; | |
1c5265b5 JJ |
3351 | /* Try to create just one PT_NOTE segment |
3352 | for all adjacent loadable .note* sections. | |
3353 | gABI requires that within a PT_NOTE segment | |
3354 | (and also inside of each SHT_NOTE section) | |
3355 | each note is padded to a multiple of 4 size, | |
3356 | so we check whether the sections are correctly | |
3357 | aligned. */ | |
3358 | if (s->alignment_power == 2) | |
3359 | while (s->next != NULL | |
3360 | && s->next->alignment_power == 2 | |
3361 | && (s->next->flags & SEC_LOAD) != 0 | |
3362 | && CONST_STRNEQ (s->next->name, ".note")) | |
3363 | s = s->next; | |
8ded5a0f AM |
3364 | } |
3365 | } | |
3366 | ||
3367 | for (s = abfd->sections; s != NULL; s = s->next) | |
3368 | { | |
3369 | if (s->flags & SEC_THREAD_LOCAL) | |
3370 | { | |
3371 | /* We need a PT_TLS segment. */ | |
3372 | ++segs; | |
3373 | break; | |
3374 | } | |
3375 | } | |
3376 | ||
3377 | /* Let the backend count up any program headers it might need. */ | |
3378 | bed = get_elf_backend_data (abfd); | |
3379 | if (bed->elf_backend_additional_program_headers) | |
3380 | { | |
3381 | int a; | |
3382 | ||
3383 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3384 | if (a == -1) | |
3385 | abort (); | |
3386 | segs += a; | |
3387 | } | |
3388 | ||
3389 | return segs * bed->s->sizeof_phdr; | |
3390 | } | |
3391 | ||
252b5132 RH |
3392 | /* Create a mapping from a set of sections to a program segment. */ |
3393 | ||
217aa764 AM |
3394 | static struct elf_segment_map * |
3395 | make_mapping (bfd *abfd, | |
3396 | asection **sections, | |
3397 | unsigned int from, | |
3398 | unsigned int to, | |
3399 | bfd_boolean phdr) | |
252b5132 RH |
3400 | { |
3401 | struct elf_segment_map *m; | |
3402 | unsigned int i; | |
3403 | asection **hdrpp; | |
dc810e39 | 3404 | bfd_size_type amt; |
252b5132 | 3405 | |
dc810e39 AM |
3406 | amt = sizeof (struct elf_segment_map); |
3407 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3408 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3409 | if (m == NULL) |
3410 | return NULL; | |
3411 | m->next = NULL; | |
3412 | m->p_type = PT_LOAD; | |
3413 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3414 | m->sections[i - from] = *hdrpp; | |
3415 | m->count = to - from; | |
3416 | ||
3417 | if (from == 0 && phdr) | |
3418 | { | |
3419 | /* Include the headers in the first PT_LOAD segment. */ | |
3420 | m->includes_filehdr = 1; | |
3421 | m->includes_phdrs = 1; | |
3422 | } | |
3423 | ||
3424 | return m; | |
3425 | } | |
3426 | ||
229fcec5 MM |
3427 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3428 | on failure. */ | |
3429 | ||
3430 | struct elf_segment_map * | |
3431 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3432 | { | |
3433 | struct elf_segment_map *m; | |
3434 | ||
3435 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3436 | if (m == NULL) | |
3437 | return NULL; | |
3438 | m->next = NULL; | |
3439 | m->p_type = PT_DYNAMIC; | |
3440 | m->count = 1; | |
3441 | m->sections[0] = dynsec; | |
08a40648 | 3442 | |
229fcec5 MM |
3443 | return m; |
3444 | } | |
3445 | ||
8ded5a0f | 3446 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3447 | |
b34976b6 | 3448 | static bfd_boolean |
8ded5a0f | 3449 | elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3450 | { |
252e386e | 3451 | struct elf_segment_map **m; |
8ded5a0f | 3452 | const struct elf_backend_data *bed; |
252b5132 | 3453 | |
8ded5a0f AM |
3454 | /* The placement algorithm assumes that non allocated sections are |
3455 | not in PT_LOAD segments. We ensure this here by removing such | |
3456 | sections from the segment map. We also remove excluded | |
252e386e AM |
3457 | sections. Finally, any PT_LOAD segment without sections is |
3458 | removed. */ | |
3459 | m = &elf_tdata (abfd)->segment_map; | |
3460 | while (*m) | |
8ded5a0f AM |
3461 | { |
3462 | unsigned int i, new_count; | |
252b5132 | 3463 | |
252e386e | 3464 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3465 | { |
252e386e AM |
3466 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3467 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3468 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3469 | { |
252e386e AM |
3470 | (*m)->sections[new_count] = (*m)->sections[i]; |
3471 | new_count++; | |
8ded5a0f AM |
3472 | } |
3473 | } | |
252e386e | 3474 | (*m)->count = new_count; |
252b5132 | 3475 | |
252e386e AM |
3476 | if ((*m)->p_type == PT_LOAD && (*m)->count == 0) |
3477 | *m = (*m)->next; | |
3478 | else | |
3479 | m = &(*m)->next; | |
8ded5a0f | 3480 | } |
252b5132 | 3481 | |
8ded5a0f AM |
3482 | bed = get_elf_backend_data (abfd); |
3483 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3484 | { |
252e386e | 3485 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3486 | return FALSE; |
252b5132 | 3487 | } |
252b5132 | 3488 | |
8ded5a0f AM |
3489 | return TRUE; |
3490 | } | |
252b5132 | 3491 | |
8ded5a0f | 3492 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3493 | |
8ded5a0f AM |
3494 | bfd_boolean |
3495 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3496 | { | |
3497 | unsigned int count; | |
3498 | struct elf_segment_map *m; | |
3499 | asection **sections = NULL; | |
3500 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 3501 | |
8ded5a0f AM |
3502 | if (elf_tdata (abfd)->segment_map == NULL |
3503 | && bfd_count_sections (abfd) != 0) | |
252b5132 | 3504 | { |
8ded5a0f AM |
3505 | asection *s; |
3506 | unsigned int i; | |
3507 | struct elf_segment_map *mfirst; | |
3508 | struct elf_segment_map **pm; | |
3509 | asection *last_hdr; | |
3510 | bfd_vma last_size; | |
3511 | unsigned int phdr_index; | |
3512 | bfd_vma maxpagesize; | |
3513 | asection **hdrpp; | |
3514 | bfd_boolean phdr_in_segment = TRUE; | |
3515 | bfd_boolean writable; | |
3516 | int tls_count = 0; | |
3517 | asection *first_tls = NULL; | |
3518 | asection *dynsec, *eh_frame_hdr; | |
3519 | bfd_size_type amt; | |
252b5132 | 3520 | |
8ded5a0f | 3521 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3522 | |
8ded5a0f AM |
3523 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3524 | if (sections == NULL) | |
252b5132 | 3525 | goto error_return; |
252b5132 | 3526 | |
8ded5a0f AM |
3527 | i = 0; |
3528 | for (s = abfd->sections; s != NULL; s = s->next) | |
3529 | { | |
3530 | if ((s->flags & SEC_ALLOC) != 0) | |
3531 | { | |
3532 | sections[i] = s; | |
3533 | ++i; | |
3534 | } | |
3535 | } | |
3536 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3537 | count = i; | |
252b5132 | 3538 | |
8ded5a0f | 3539 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3540 | |
8ded5a0f | 3541 | /* Build the mapping. */ |
252b5132 | 3542 | |
8ded5a0f AM |
3543 | mfirst = NULL; |
3544 | pm = &mfirst; | |
252b5132 | 3545 | |
8ded5a0f AM |
3546 | /* If we have a .interp section, then create a PT_PHDR segment for |
3547 | the program headers and a PT_INTERP segment for the .interp | |
3548 | section. */ | |
3549 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3550 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3551 | { | |
3552 | amt = sizeof (struct elf_segment_map); | |
3553 | m = bfd_zalloc (abfd, amt); | |
3554 | if (m == NULL) | |
3555 | goto error_return; | |
3556 | m->next = NULL; | |
3557 | m->p_type = PT_PHDR; | |
3558 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3559 | m->p_flags = PF_R | PF_X; | |
3560 | m->p_flags_valid = 1; | |
3561 | m->includes_phdrs = 1; | |
252b5132 | 3562 | |
8ded5a0f AM |
3563 | *pm = m; |
3564 | pm = &m->next; | |
252b5132 | 3565 | |
8ded5a0f AM |
3566 | amt = sizeof (struct elf_segment_map); |
3567 | m = bfd_zalloc (abfd, amt); | |
3568 | if (m == NULL) | |
3569 | goto error_return; | |
3570 | m->next = NULL; | |
3571 | m->p_type = PT_INTERP; | |
3572 | m->count = 1; | |
3573 | m->sections[0] = s; | |
3574 | ||
3575 | *pm = m; | |
3576 | pm = &m->next; | |
252b5132 | 3577 | } |
8ded5a0f AM |
3578 | |
3579 | /* Look through the sections. We put sections in the same program | |
3580 | segment when the start of the second section can be placed within | |
3581 | a few bytes of the end of the first section. */ | |
3582 | last_hdr = NULL; | |
3583 | last_size = 0; | |
3584 | phdr_index = 0; | |
3585 | maxpagesize = bed->maxpagesize; | |
3586 | writable = FALSE; | |
3587 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3588 | if (dynsec != NULL | |
3589 | && (dynsec->flags & SEC_LOAD) == 0) | |
3590 | dynsec = NULL; | |
3591 | ||
3592 | /* Deal with -Ttext or something similar such that the first section | |
3593 | is not adjacent to the program headers. This is an | |
3594 | approximation, since at this point we don't know exactly how many | |
3595 | program headers we will need. */ | |
3596 | if (count > 0) | |
252b5132 | 3597 | { |
8ded5a0f AM |
3598 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3599 | ||
62d7a5f6 | 3600 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3601 | phdr_size = get_program_header_size (abfd, info); |
3602 | if ((abfd->flags & D_PAGED) == 0 | |
3603 | || sections[0]->lma < phdr_size | |
3604 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3605 | phdr_in_segment = FALSE; | |
252b5132 RH |
3606 | } |
3607 | ||
8ded5a0f | 3608 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3609 | { |
8ded5a0f AM |
3610 | asection *hdr; |
3611 | bfd_boolean new_segment; | |
3612 | ||
3613 | hdr = *hdrpp; | |
3614 | ||
3615 | /* See if this section and the last one will fit in the same | |
3616 | segment. */ | |
3617 | ||
3618 | if (last_hdr == NULL) | |
3619 | { | |
3620 | /* If we don't have a segment yet, then we don't need a new | |
3621 | one (we build the last one after this loop). */ | |
3622 | new_segment = FALSE; | |
3623 | } | |
3624 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3625 | { | |
3626 | /* If this section has a different relation between the | |
3627 | virtual address and the load address, then we need a new | |
3628 | segment. */ | |
3629 | new_segment = TRUE; | |
3630 | } | |
3631 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3632 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3633 | { | |
3634 | /* If putting this section in this segment would force us to | |
3635 | skip a page in the segment, then we need a new segment. */ | |
3636 | new_segment = TRUE; | |
3637 | } | |
3638 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3639 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3640 | { | |
3641 | /* We don't want to put a loadable section after a | |
3642 | nonloadable section in the same segment. | |
3643 | Consider .tbss sections as loadable for this purpose. */ | |
3644 | new_segment = TRUE; | |
3645 | } | |
3646 | else if ((abfd->flags & D_PAGED) == 0) | |
3647 | { | |
3648 | /* If the file is not demand paged, which means that we | |
3649 | don't require the sections to be correctly aligned in the | |
3650 | file, then there is no other reason for a new segment. */ | |
3651 | new_segment = FALSE; | |
3652 | } | |
3653 | else if (! writable | |
3654 | && (hdr->flags & SEC_READONLY) == 0 | |
3655 | && (((last_hdr->lma + last_size - 1) | |
3656 | & ~(maxpagesize - 1)) | |
3657 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3658 | { | |
3659 | /* We don't want to put a writable section in a read only | |
3660 | segment, unless they are on the same page in memory | |
3661 | anyhow. We already know that the last section does not | |
3662 | bring us past the current section on the page, so the | |
3663 | only case in which the new section is not on the same | |
3664 | page as the previous section is when the previous section | |
3665 | ends precisely on a page boundary. */ | |
3666 | new_segment = TRUE; | |
3667 | } | |
3668 | else | |
3669 | { | |
3670 | /* Otherwise, we can use the same segment. */ | |
3671 | new_segment = FALSE; | |
3672 | } | |
3673 | ||
2889e75b NC |
3674 | /* Allow interested parties a chance to override our decision. */ |
3675 | if (last_hdr && info->callbacks->override_segment_assignment) | |
3676 | new_segment = info->callbacks->override_segment_assignment (info, abfd, hdr, last_hdr, new_segment); | |
3677 | ||
8ded5a0f AM |
3678 | if (! new_segment) |
3679 | { | |
3680 | if ((hdr->flags & SEC_READONLY) == 0) | |
3681 | writable = TRUE; | |
3682 | last_hdr = hdr; | |
3683 | /* .tbss sections effectively have zero size. */ | |
3684 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3685 | != SEC_THREAD_LOCAL) | |
3686 | last_size = hdr->size; | |
3687 | else | |
3688 | last_size = 0; | |
3689 | continue; | |
3690 | } | |
3691 | ||
3692 | /* We need a new program segment. We must create a new program | |
3693 | header holding all the sections from phdr_index until hdr. */ | |
3694 | ||
3695 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3696 | if (m == NULL) | |
3697 | goto error_return; | |
3698 | ||
3699 | *pm = m; | |
3700 | pm = &m->next; | |
3701 | ||
252b5132 | 3702 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3703 | writable = TRUE; |
8ded5a0f AM |
3704 | else |
3705 | writable = FALSE; | |
3706 | ||
baaff79e JJ |
3707 | last_hdr = hdr; |
3708 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3709 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3710 | last_size = hdr->size; |
baaff79e JJ |
3711 | else |
3712 | last_size = 0; | |
8ded5a0f AM |
3713 | phdr_index = i; |
3714 | phdr_in_segment = FALSE; | |
252b5132 RH |
3715 | } |
3716 | ||
8ded5a0f AM |
3717 | /* Create a final PT_LOAD program segment. */ |
3718 | if (last_hdr != NULL) | |
3719 | { | |
3720 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3721 | if (m == NULL) | |
3722 | goto error_return; | |
252b5132 | 3723 | |
8ded5a0f AM |
3724 | *pm = m; |
3725 | pm = &m->next; | |
3726 | } | |
252b5132 | 3727 | |
8ded5a0f AM |
3728 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3729 | if (dynsec != NULL) | |
3730 | { | |
3731 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3732 | if (m == NULL) | |
3733 | goto error_return; | |
3734 | *pm = m; | |
3735 | pm = &m->next; | |
3736 | } | |
252b5132 | 3737 | |
1c5265b5 JJ |
3738 | /* For each batch of consecutive loadable .note sections, |
3739 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
3740 | because if we link together nonloadable .note sections and | |
3741 | loadable .note sections, we will generate two .note sections | |
3742 | in the output file. FIXME: Using names for section types is | |
3743 | bogus anyhow. */ | |
8ded5a0f AM |
3744 | for (s = abfd->sections; s != NULL; s = s->next) |
3745 | { | |
3746 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3747 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 3748 | { |
1c5265b5 JJ |
3749 | asection *s2; |
3750 | unsigned count = 1; | |
8ded5a0f | 3751 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
3752 | if (s->alignment_power == 2) |
3753 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
3754 | { |
3755 | if (s2->next->alignment_power == 2 | |
3756 | && (s2->next->flags & SEC_LOAD) != 0 | |
3757 | && CONST_STRNEQ (s2->next->name, ".note") | |
3758 | && align_power (s2->vma + s2->size, 2) | |
3759 | == s2->next->vma) | |
3760 | count++; | |
3761 | else | |
3762 | break; | |
3763 | } | |
1c5265b5 | 3764 | amt += (count - 1) * sizeof (asection *); |
8ded5a0f AM |
3765 | m = bfd_zalloc (abfd, amt); |
3766 | if (m == NULL) | |
3767 | goto error_return; | |
3768 | m->next = NULL; | |
3769 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
3770 | m->count = count; |
3771 | while (count > 1) | |
3772 | { | |
3773 | m->sections[m->count - count--] = s; | |
3774 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
3775 | s = s->next; | |
3776 | } | |
3777 | m->sections[m->count - 1] = s; | |
3778 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
3779 | *pm = m; |
3780 | pm = &m->next; | |
3781 | } | |
3782 | if (s->flags & SEC_THREAD_LOCAL) | |
3783 | { | |
3784 | if (! tls_count) | |
3785 | first_tls = s; | |
3786 | tls_count++; | |
3787 | } | |
3788 | } | |
252b5132 | 3789 | |
8ded5a0f AM |
3790 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
3791 | if (tls_count > 0) | |
3792 | { | |
3793 | int i; | |
252b5132 | 3794 | |
8ded5a0f AM |
3795 | amt = sizeof (struct elf_segment_map); |
3796 | amt += (tls_count - 1) * sizeof (asection *); | |
3797 | m = bfd_zalloc (abfd, amt); | |
3798 | if (m == NULL) | |
3799 | goto error_return; | |
3800 | m->next = NULL; | |
3801 | m->p_type = PT_TLS; | |
3802 | m->count = tls_count; | |
3803 | /* Mandated PF_R. */ | |
3804 | m->p_flags = PF_R; | |
3805 | m->p_flags_valid = 1; | |
3806 | for (i = 0; i < tls_count; ++i) | |
3807 | { | |
3808 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3809 | m->sections[i] = first_tls; | |
3810 | first_tls = first_tls->next; | |
3811 | } | |
252b5132 | 3812 | |
8ded5a0f AM |
3813 | *pm = m; |
3814 | pm = &m->next; | |
3815 | } | |
252b5132 | 3816 | |
8ded5a0f AM |
3817 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3818 | segment. */ | |
3819 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
3820 | if (eh_frame_hdr != NULL | |
3821 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 3822 | { |
dc810e39 | 3823 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3824 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3825 | if (m == NULL) |
3826 | goto error_return; | |
3827 | m->next = NULL; | |
8ded5a0f | 3828 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 3829 | m->count = 1; |
8ded5a0f | 3830 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
3831 | |
3832 | *pm = m; | |
3833 | pm = &m->next; | |
3834 | } | |
13ae64f3 | 3835 | |
8ded5a0f | 3836 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 3837 | { |
8ded5a0f AM |
3838 | amt = sizeof (struct elf_segment_map); |
3839 | m = bfd_zalloc (abfd, amt); | |
3840 | if (m == NULL) | |
3841 | goto error_return; | |
3842 | m->next = NULL; | |
3843 | m->p_type = PT_GNU_STACK; | |
3844 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3845 | m->p_flags_valid = 1; | |
252b5132 | 3846 | |
8ded5a0f AM |
3847 | *pm = m; |
3848 | pm = &m->next; | |
3849 | } | |
65765700 | 3850 | |
c9df6640 | 3851 | if (dynsec != NULL && elf_tdata (abfd)->relro) |
8ded5a0f | 3852 | { |
c9df6640 L |
3853 | /* We make a PT_GNU_RELRO segment only when there is a |
3854 | PT_DYNAMIC segment. */ | |
8ded5a0f AM |
3855 | amt = sizeof (struct elf_segment_map); |
3856 | m = bfd_zalloc (abfd, amt); | |
3857 | if (m == NULL) | |
3858 | goto error_return; | |
3859 | m->next = NULL; | |
3860 | m->p_type = PT_GNU_RELRO; | |
3861 | m->p_flags = PF_R; | |
3862 | m->p_flags_valid = 1; | |
65765700 | 3863 | |
8ded5a0f AM |
3864 | *pm = m; |
3865 | pm = &m->next; | |
3866 | } | |
9ee5e499 | 3867 | |
8ded5a0f AM |
3868 | free (sections); |
3869 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
3870 | } |
3871 | ||
8ded5a0f AM |
3872 | if (!elf_modify_segment_map (abfd, info)) |
3873 | return FALSE; | |
8c37241b | 3874 | |
8ded5a0f AM |
3875 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
3876 | ++count; | |
3877 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 3878 | |
b34976b6 | 3879 | return TRUE; |
252b5132 RH |
3880 | |
3881 | error_return: | |
3882 | if (sections != NULL) | |
3883 | free (sections); | |
b34976b6 | 3884 | return FALSE; |
252b5132 RH |
3885 | } |
3886 | ||
3887 | /* Sort sections by address. */ | |
3888 | ||
3889 | static int | |
217aa764 | 3890 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3891 | { |
3892 | const asection *sec1 = *(const asection **) arg1; | |
3893 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3894 | bfd_size_type size1, size2; |
252b5132 RH |
3895 | |
3896 | /* Sort by LMA first, since this is the address used to | |
3897 | place the section into a segment. */ | |
3898 | if (sec1->lma < sec2->lma) | |
3899 | return -1; | |
3900 | else if (sec1->lma > sec2->lma) | |
3901 | return 1; | |
3902 | ||
3903 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3904 | the same, and this will do nothing. */ | |
3905 | if (sec1->vma < sec2->vma) | |
3906 | return -1; | |
3907 | else if (sec1->vma > sec2->vma) | |
3908 | return 1; | |
3909 | ||
3910 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3911 | ||
07c6e936 | 3912 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3913 | |
3914 | if (TOEND (sec1)) | |
3915 | { | |
3916 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3917 | { |
3918 | /* If the indicies are the same, do not return 0 | |
3919 | here, but continue to try the next comparison. */ | |
3920 | if (sec1->target_index - sec2->target_index != 0) | |
3921 | return sec1->target_index - sec2->target_index; | |
3922 | } | |
252b5132 RH |
3923 | else |
3924 | return 1; | |
3925 | } | |
00a7cdc5 | 3926 | else if (TOEND (sec2)) |
252b5132 RH |
3927 | return -1; |
3928 | ||
3929 | #undef TOEND | |
3930 | ||
00a7cdc5 NC |
3931 | /* Sort by size, to put zero sized sections |
3932 | before others at the same address. */ | |
252b5132 | 3933 | |
eea6121a AM |
3934 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3935 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3936 | |
3937 | if (size1 < size2) | |
252b5132 | 3938 | return -1; |
eecdbe52 | 3939 | if (size1 > size2) |
252b5132 RH |
3940 | return 1; |
3941 | ||
3942 | return sec1->target_index - sec2->target_index; | |
3943 | } | |
3944 | ||
340b6d91 AC |
3945 | /* Ian Lance Taylor writes: |
3946 | ||
3947 | We shouldn't be using % with a negative signed number. That's just | |
3948 | not good. We have to make sure either that the number is not | |
3949 | negative, or that the number has an unsigned type. When the types | |
3950 | are all the same size they wind up as unsigned. When file_ptr is a | |
3951 | larger signed type, the arithmetic winds up as signed long long, | |
3952 | which is wrong. | |
3953 | ||
3954 | What we're trying to say here is something like ``increase OFF by | |
3955 | the least amount that will cause it to be equal to the VMA modulo | |
3956 | the page size.'' */ | |
3957 | /* In other words, something like: | |
3958 | ||
3959 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
3960 | off_offset = off % bed->maxpagesize; | |
3961 | if (vma_offset < off_offset) | |
3962 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
3963 | else | |
3964 | adjustment = vma_offset - off_offset; | |
08a40648 | 3965 | |
340b6d91 AC |
3966 | which can can be collapsed into the expression below. */ |
3967 | ||
3968 | static file_ptr | |
3969 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
3970 | { | |
3971 | return ((vma - off) % maxpagesize); | |
3972 | } | |
3973 | ||
6d33f217 L |
3974 | static void |
3975 | print_segment_map (const struct elf_segment_map *m) | |
3976 | { | |
3977 | unsigned int j; | |
3978 | const char *pt = get_segment_type (m->p_type); | |
3979 | char buf[32]; | |
3980 | ||
3981 | if (pt == NULL) | |
3982 | { | |
3983 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
3984 | sprintf (buf, "LOPROC+%7.7x", | |
3985 | (unsigned int) (m->p_type - PT_LOPROC)); | |
3986 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
3987 | sprintf (buf, "LOOS+%7.7x", | |
3988 | (unsigned int) (m->p_type - PT_LOOS)); | |
3989 | else | |
3990 | snprintf (buf, sizeof (buf), "%8.8x", | |
3991 | (unsigned int) m->p_type); | |
3992 | pt = buf; | |
3993 | } | |
3994 | fprintf (stderr, "%s:", pt); | |
3995 | for (j = 0; j < m->count; j++) | |
3996 | fprintf (stderr, " %s", m->sections [j]->name); | |
3997 | putc ('\n',stderr); | |
3998 | } | |
3999 | ||
252b5132 RH |
4000 | /* Assign file positions to the sections based on the mapping from |
4001 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4002 | the file header. */ |
252b5132 | 4003 | |
b34976b6 | 4004 | static bfd_boolean |
f3520d2f AM |
4005 | assign_file_positions_for_load_sections (bfd *abfd, |
4006 | struct bfd_link_info *link_info) | |
252b5132 RH |
4007 | { |
4008 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4009 | struct elf_segment_map *m; |
252b5132 | 4010 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4011 | Elf_Internal_Phdr *p; |
02bf8d82 | 4012 | file_ptr off; |
3f570048 | 4013 | bfd_size_type maxpagesize; |
f3520d2f | 4014 | unsigned int alloc; |
0920dee7 | 4015 | unsigned int i, j; |
252b5132 | 4016 | |
e36284ab AM |
4017 | if (link_info == NULL |
4018 | && !elf_modify_segment_map (abfd, link_info)) | |
8ded5a0f | 4019 | return FALSE; |
252b5132 | 4020 | |
8ded5a0f | 4021 | alloc = 0; |
252b5132 | 4022 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4023 | ++alloc; |
252b5132 RH |
4024 | |
4025 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4026 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4027 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4028 | |
62d7a5f6 | 4029 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4030 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4031 | else | |
4032 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4033 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4034 | |
4035 | if (alloc == 0) | |
f3520d2f | 4036 | { |
8ded5a0f AM |
4037 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4038 | return TRUE; | |
f3520d2f | 4039 | } |
252b5132 | 4040 | |
d0fb9a8d | 4041 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4042 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4043 | if (phdrs == NULL) |
b34976b6 | 4044 | return FALSE; |
252b5132 | 4045 | |
3f570048 AM |
4046 | maxpagesize = 1; |
4047 | if ((abfd->flags & D_PAGED) != 0) | |
4048 | maxpagesize = bed->maxpagesize; | |
4049 | ||
252b5132 RH |
4050 | off = bed->s->sizeof_ehdr; |
4051 | off += alloc * bed->s->sizeof_phdr; | |
4052 | ||
0920dee7 | 4053 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4054 | m != NULL; |
0920dee7 | 4055 | m = m->next, p++, j++) |
252b5132 | 4056 | { |
252b5132 | 4057 | asection **secpp; |
bf988460 AM |
4058 | bfd_vma off_adjust; |
4059 | bfd_boolean no_contents; | |
252b5132 RH |
4060 | |
4061 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4062 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4063 | not be done to the PT_NOTE section of a corefile, which may |
4064 | contain several pseudo-sections artificially created by bfd. | |
4065 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4066 | if (m->count > 1 |
4067 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4068 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4069 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4070 | elf_sort_sections); | |
4071 | ||
b301b248 AM |
4072 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4073 | number of sections with contents contributing to both p_filesz | |
4074 | and p_memsz, followed by a number of sections with no contents | |
4075 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4076 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4077 | p->p_type = m->p_type; |
28a7f3e7 | 4078 | p->p_flags = m->p_flags; |
252b5132 | 4079 | |
3f570048 AM |
4080 | if (m->count == 0) |
4081 | p->p_vaddr = 0; | |
4082 | else | |
3271a814 | 4083 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4084 | |
4085 | if (m->p_paddr_valid) | |
4086 | p->p_paddr = m->p_paddr; | |
4087 | else if (m->count == 0) | |
4088 | p->p_paddr = 0; | |
4089 | else | |
08a40648 | 4090 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4091 | |
4092 | if (p->p_type == PT_LOAD | |
4093 | && (abfd->flags & D_PAGED) != 0) | |
4094 | { | |
4095 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4096 | the maximum page size. When copying an executable with | |
4097 | objcopy, we set m->p_align from the input file. Use this | |
4098 | value for maxpagesize rather than bed->maxpagesize, which | |
4099 | may be different. Note that we use maxpagesize for PT_TLS | |
4100 | segment alignment later in this function, so we are relying | |
4101 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4102 | segment. */ | |
4103 | if (m->p_align_valid) | |
4104 | maxpagesize = m->p_align; | |
4105 | ||
4106 | p->p_align = maxpagesize; | |
4107 | } | |
4108 | else if (m->count == 0) | |
4109 | p->p_align = 1 << bed->s->log_file_align; | |
3271a814 NS |
4110 | else if (m->p_align_valid) |
4111 | p->p_align = m->p_align; | |
3f570048 AM |
4112 | else |
4113 | p->p_align = 0; | |
4114 | ||
bf988460 AM |
4115 | no_contents = FALSE; |
4116 | off_adjust = 0; | |
252b5132 | 4117 | if (p->p_type == PT_LOAD |
b301b248 | 4118 | && m->count > 0) |
252b5132 | 4119 | { |
b301b248 | 4120 | bfd_size_type align; |
a49e53ed | 4121 | unsigned int align_power = 0; |
b301b248 | 4122 | |
3271a814 NS |
4123 | if (m->p_align_valid) |
4124 | align = p->p_align; | |
4125 | else | |
252b5132 | 4126 | { |
3271a814 NS |
4127 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4128 | { | |
4129 | unsigned int secalign; | |
08a40648 | 4130 | |
3271a814 NS |
4131 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4132 | if (secalign > align_power) | |
4133 | align_power = secalign; | |
4134 | } | |
4135 | align = (bfd_size_type) 1 << align_power; | |
4136 | if (align < maxpagesize) | |
4137 | align = maxpagesize; | |
b301b248 | 4138 | } |
252b5132 | 4139 | |
02bf8d82 AM |
4140 | for (i = 0; i < m->count; i++) |
4141 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4142 | /* If we aren't making room for this section, then | |
4143 | it must be SHT_NOBITS regardless of what we've | |
4144 | set via struct bfd_elf_special_section. */ | |
4145 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4146 | ||
bf988460 AM |
4147 | /* Find out whether this segment contains any loadable |
4148 | sections. If the first section isn't loadable, the same | |
4149 | holds for any other sections. */ | |
4150 | i = 0; | |
4151 | while (elf_section_type (m->sections[i]) == SHT_NOBITS) | |
b301b248 | 4152 | { |
bf988460 AM |
4153 | /* If a segment starts with .tbss, we need to look |
4154 | at the next section to decide whether the segment | |
4155 | has any loadable sections. */ | |
4156 | if ((elf_section_flags (m->sections[i]) & SHF_TLS) == 0 | |
4157 | || ++i >= m->count) | |
b301b248 | 4158 | { |
bf988460 AM |
4159 | no_contents = TRUE; |
4160 | break; | |
b301b248 | 4161 | } |
252b5132 | 4162 | } |
bf988460 AM |
4163 | |
4164 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4165 | off += off_adjust; | |
4166 | if (no_contents) | |
4167 | { | |
4168 | /* We shouldn't need to align the segment on disk since | |
4169 | the segment doesn't need file space, but the gABI | |
4170 | arguably requires the alignment and glibc ld.so | |
4171 | checks it. So to comply with the alignment | |
4172 | requirement but not waste file space, we adjust | |
4173 | p_offset for just this segment. (OFF_ADJUST is | |
4174 | subtracted from OFF later.) This may put p_offset | |
4175 | past the end of file, but that shouldn't matter. */ | |
4176 | } | |
4177 | else | |
4178 | off_adjust = 0; | |
252b5132 | 4179 | } |
b1a6d0b1 NC |
4180 | /* Make sure the .dynamic section is the first section in the |
4181 | PT_DYNAMIC segment. */ | |
4182 | else if (p->p_type == PT_DYNAMIC | |
4183 | && m->count > 1 | |
4184 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4185 | { | |
4186 | _bfd_error_handler | |
b301b248 AM |
4187 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4188 | abfd); | |
b1a6d0b1 NC |
4189 | bfd_set_error (bfd_error_bad_value); |
4190 | return FALSE; | |
4191 | } | |
252b5132 | 4192 | |
252b5132 RH |
4193 | p->p_offset = 0; |
4194 | p->p_filesz = 0; | |
4195 | p->p_memsz = 0; | |
4196 | ||
4197 | if (m->includes_filehdr) | |
4198 | { | |
bf988460 | 4199 | if (!m->p_flags_valid) |
252b5132 | 4200 | p->p_flags |= PF_R; |
252b5132 RH |
4201 | p->p_filesz = bed->s->sizeof_ehdr; |
4202 | p->p_memsz = bed->s->sizeof_ehdr; | |
4203 | if (m->count > 0) | |
4204 | { | |
4205 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4206 | ||
4207 | if (p->p_vaddr < (bfd_vma) off) | |
4208 | { | |
caf47ea6 | 4209 | (*_bfd_error_handler) |
b301b248 AM |
4210 | (_("%B: Not enough room for program headers, try linking with -N"), |
4211 | abfd); | |
252b5132 | 4212 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4213 | return FALSE; |
252b5132 RH |
4214 | } |
4215 | ||
4216 | p->p_vaddr -= off; | |
bf988460 | 4217 | if (!m->p_paddr_valid) |
252b5132 RH |
4218 | p->p_paddr -= off; |
4219 | } | |
252b5132 RH |
4220 | } |
4221 | ||
4222 | if (m->includes_phdrs) | |
4223 | { | |
bf988460 | 4224 | if (!m->p_flags_valid) |
252b5132 RH |
4225 | p->p_flags |= PF_R; |
4226 | ||
f3520d2f | 4227 | if (!m->includes_filehdr) |
252b5132 RH |
4228 | { |
4229 | p->p_offset = bed->s->sizeof_ehdr; | |
4230 | ||
4231 | if (m->count > 0) | |
4232 | { | |
4233 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4234 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4235 | if (!m->p_paddr_valid) |
252b5132 RH |
4236 | p->p_paddr -= off - p->p_offset; |
4237 | } | |
252b5132 RH |
4238 | } |
4239 | ||
4240 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4241 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4242 | } | |
4243 | ||
4244 | if (p->p_type == PT_LOAD | |
4245 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4246 | { | |
bf988460 | 4247 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4248 | p->p_offset = off; |
252b5132 RH |
4249 | else |
4250 | { | |
4251 | file_ptr adjust; | |
4252 | ||
4253 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4254 | if (!no_contents) |
4255 | p->p_filesz += adjust; | |
252b5132 RH |
4256 | p->p_memsz += adjust; |
4257 | } | |
4258 | } | |
4259 | ||
1ea63fd2 AM |
4260 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4261 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4262 | core files, for sections in PT_NOTE segments. | |
4263 | assign_file_positions_for_non_load_sections will set filepos | |
4264 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4265 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4266 | { | |
4267 | asection *sec; | |
252b5132 | 4268 | bfd_size_type align; |
627b32bc | 4269 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4270 | |
4271 | sec = *secpp; | |
02bf8d82 | 4272 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4273 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4274 | |
b301b248 AM |
4275 | if (p->p_type == PT_LOAD |
4276 | || p->p_type == PT_TLS) | |
252b5132 | 4277 | { |
8c252fd9 | 4278 | bfd_signed_vma adjust = sec->lma - (p->p_paddr + p->p_memsz); |
252b5132 | 4279 | |
02bf8d82 AM |
4280 | if (this_hdr->sh_type != SHT_NOBITS |
4281 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4282 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
0e922b77 | 4283 | || p->p_type == PT_TLS))) |
252b5132 | 4284 | { |
252b5132 | 4285 | if (adjust < 0) |
b301b248 AM |
4286 | { |
4287 | (*_bfd_error_handler) | |
4288 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4289 | abfd, sec, (unsigned long) sec->lma); | |
4290 | adjust = 0; | |
4291 | } | |
252b5132 | 4292 | p->p_memsz += adjust; |
0e922b77 | 4293 | |
02bf8d82 | 4294 | if (this_hdr->sh_type != SHT_NOBITS) |
0e922b77 AM |
4295 | { |
4296 | off += adjust; | |
4297 | p->p_filesz += adjust; | |
4298 | } | |
252b5132 | 4299 | } |
252b5132 RH |
4300 | } |
4301 | ||
4302 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4303 | { | |
b301b248 AM |
4304 | /* The section at i == 0 is the one that actually contains |
4305 | everything. */ | |
4a938328 MS |
4306 | if (i == 0) |
4307 | { | |
627b32bc | 4308 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4309 | off += this_hdr->sh_size; |
4310 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4311 | p->p_memsz = 0; |
4312 | p->p_align = 1; | |
252b5132 | 4313 | } |
4a938328 | 4314 | else |
252b5132 | 4315 | { |
b301b248 | 4316 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4317 | sec->filepos = 0; |
eea6121a | 4318 | sec->size = 0; |
b301b248 AM |
4319 | sec->flags = 0; |
4320 | continue; | |
252b5132 | 4321 | } |
252b5132 RH |
4322 | } |
4323 | else | |
4324 | { | |
b301b248 AM |
4325 | if (p->p_type == PT_LOAD) |
4326 | { | |
02bf8d82 AM |
4327 | this_hdr->sh_offset = sec->filepos = off; |
4328 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4329 | off += this_hdr->sh_size; |
b301b248 | 4330 | } |
252b5132 | 4331 | |
02bf8d82 | 4332 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4333 | { |
6a3cd2b4 | 4334 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4335 | /* A load section without SHF_ALLOC is something like |
4336 | a note section in a PT_NOTE segment. These take | |
4337 | file space but are not loaded into memory. */ | |
4338 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4339 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4340 | } |
6a3cd2b4 | 4341 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4342 | { |
6a3cd2b4 AM |
4343 | if (p->p_type == PT_TLS) |
4344 | p->p_memsz += this_hdr->sh_size; | |
4345 | ||
4346 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4347 | normal segments. */ | |
4348 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4349 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4350 | } |
4351 | ||
c9df6640 L |
4352 | if (p->p_type == PT_GNU_RELRO) |
4353 | p->p_align = 1; | |
4354 | else if (align > p->p_align | |
3271a814 | 4355 | && !m->p_align_valid |
c9df6640 L |
4356 | && (p->p_type != PT_LOAD |
4357 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4358 | p->p_align = align; |
4359 | } | |
4360 | ||
bf988460 | 4361 | if (!m->p_flags_valid) |
252b5132 RH |
4362 | { |
4363 | p->p_flags |= PF_R; | |
02bf8d82 | 4364 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4365 | p->p_flags |= PF_X; |
02bf8d82 | 4366 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4367 | p->p_flags |= PF_W; |
4368 | } | |
4369 | } | |
bf988460 | 4370 | off -= off_adjust; |
0920dee7 | 4371 | |
7c928300 AM |
4372 | /* Check that all sections are in a PT_LOAD segment. |
4373 | Don't check funky gdb generated core files. */ | |
4374 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4375 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4376 | { | |
4377 | Elf_Internal_Shdr *this_hdr; | |
4378 | asection *sec; | |
4379 | ||
4380 | sec = *secpp; | |
4381 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4382 | if (this_hdr->sh_size != 0 | |
4383 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4384 | { | |
4385 | (*_bfd_error_handler) | |
4386 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4387 | abfd, sec, j); | |
6d33f217 | 4388 | print_segment_map (m); |
0920dee7 L |
4389 | bfd_set_error (bfd_error_bad_value); |
4390 | return FALSE; | |
4391 | } | |
4392 | } | |
252b5132 RH |
4393 | } |
4394 | ||
f3520d2f AM |
4395 | elf_tdata (abfd)->next_file_pos = off; |
4396 | return TRUE; | |
4397 | } | |
4398 | ||
4399 | /* Assign file positions for the other sections. */ | |
4400 | ||
4401 | static bfd_boolean | |
4402 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4403 | struct bfd_link_info *link_info) | |
4404 | { | |
4405 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4406 | Elf_Internal_Shdr **i_shdrpp; | |
4407 | Elf_Internal_Shdr **hdrpp; | |
4408 | Elf_Internal_Phdr *phdrs; | |
4409 | Elf_Internal_Phdr *p; | |
4410 | struct elf_segment_map *m; | |
4411 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4412 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4413 | file_ptr off; | |
4414 | unsigned int num_sec; | |
4415 | unsigned int i; | |
4416 | unsigned int count; | |
4417 | ||
5c182d5f AM |
4418 | i_shdrpp = elf_elfsections (abfd); |
4419 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4420 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4421 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4422 | { | |
4423 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4424 | Elf_Internal_Shdr *hdr; | |
4425 | ||
4426 | hdr = *hdrpp; | |
4427 | if (hdr->bfd_section != NULL | |
252e386e AM |
4428 | && (hdr->bfd_section->filepos != 0 |
4429 | || (hdr->sh_type == SHT_NOBITS | |
4430 | && hdr->contents == NULL))) | |
627b32bc | 4431 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4432 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4433 | { | |
49c13adb L |
4434 | if (hdr->sh_size != 0) |
4435 | ((*_bfd_error_handler) | |
4436 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4437 | abfd, |
4438 | (hdr->bfd_section == NULL | |
4439 | ? "*unknown*" | |
4440 | : hdr->bfd_section->name))); | |
4441 | /* We don't need to page align empty sections. */ | |
4442 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4443 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4444 | bed->maxpagesize); | |
4445 | else | |
4446 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4447 | hdr->sh_addralign); | |
4448 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4449 | FALSE); | |
4450 | } | |
4451 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4452 | && hdr->bfd_section == NULL) | |
4453 | || hdr == i_shdrpp[tdata->symtab_section] | |
4454 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4455 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4456 | hdr->sh_offset = -1; | |
4457 | else | |
4458 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4459 | ||
4460 | if (i == SHN_LORESERVE - 1) | |
4461 | { | |
4462 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4463 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4464 | } | |
4465 | } | |
4466 | ||
252b5132 RH |
4467 | /* Now that we have set the section file positions, we can set up |
4468 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4469 | count = 0; |
4470 | filehdr_vaddr = 0; | |
4471 | filehdr_paddr = 0; | |
4472 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4473 | phdrs_paddr = 0; | |
4474 | phdrs = elf_tdata (abfd)->phdr; | |
4475 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4476 | m != NULL; | |
4477 | m = m->next, p++) | |
4478 | { | |
4479 | ++count; | |
4480 | if (p->p_type != PT_LOAD) | |
4481 | continue; | |
4482 | ||
4483 | if (m->includes_filehdr) | |
4484 | { | |
4485 | filehdr_vaddr = p->p_vaddr; | |
4486 | filehdr_paddr = p->p_paddr; | |
4487 | } | |
4488 | if (m->includes_phdrs) | |
4489 | { | |
4490 | phdrs_vaddr = p->p_vaddr; | |
4491 | phdrs_paddr = p->p_paddr; | |
4492 | if (m->includes_filehdr) | |
4493 | { | |
4494 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4495 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4496 | } | |
4497 | } | |
4498 | } | |
4499 | ||
252b5132 RH |
4500 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4501 | m != NULL; | |
4502 | m = m->next, p++) | |
4503 | { | |
1ea63fd2 | 4504 | if (m->count != 0) |
252b5132 | 4505 | { |
1ea63fd2 AM |
4506 | if (p->p_type != PT_LOAD |
4507 | && (p->p_type != PT_NOTE || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4508 | { |
1ea63fd2 AM |
4509 | Elf_Internal_Shdr *hdr; |
4510 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4511 | ||
4512 | hdr = &elf_section_data (m->sections[m->count - 1])->this_hdr; | |
4513 | p->p_filesz = (m->sections[m->count - 1]->filepos | |
4514 | - m->sections[0]->filepos); | |
4515 | if (hdr->sh_type != SHT_NOBITS) | |
4516 | p->p_filesz += hdr->sh_size; | |
4517 | ||
4518 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4519 | } |
252b5132 | 4520 | } |
1ea63fd2 | 4521 | else |
252b5132 RH |
4522 | { |
4523 | if (m->includes_filehdr) | |
4524 | { | |
4525 | p->p_vaddr = filehdr_vaddr; | |
4526 | if (! m->p_paddr_valid) | |
4527 | p->p_paddr = filehdr_paddr; | |
4528 | } | |
4529 | else if (m->includes_phdrs) | |
4530 | { | |
4531 | p->p_vaddr = phdrs_vaddr; | |
4532 | if (! m->p_paddr_valid) | |
4533 | p->p_paddr = phdrs_paddr; | |
4534 | } | |
8c37241b JJ |
4535 | else if (p->p_type == PT_GNU_RELRO) |
4536 | { | |
4537 | Elf_Internal_Phdr *lp; | |
4538 | ||
4539 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4540 | { | |
4541 | if (lp->p_type == PT_LOAD | |
4542 | && lp->p_vaddr <= link_info->relro_end | |
4543 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4544 | && (lp->p_vaddr + lp->p_filesz |
4545 | >= link_info->relro_end)) | |
8c37241b JJ |
4546 | break; |
4547 | } | |
4548 | ||
4549 | if (lp < phdrs + count | |
4550 | && link_info->relro_end > lp->p_vaddr) | |
4551 | { | |
4552 | p->p_vaddr = lp->p_vaddr; | |
4553 | p->p_paddr = lp->p_paddr; | |
4554 | p->p_offset = lp->p_offset; | |
4555 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4556 | p->p_memsz = p->p_filesz; | |
4557 | p->p_align = 1; | |
4558 | p->p_flags = (lp->p_flags & ~PF_W); | |
4559 | } | |
4560 | else | |
4561 | { | |
4562 | memset (p, 0, sizeof *p); | |
4563 | p->p_type = PT_NULL; | |
4564 | } | |
4565 | } | |
252b5132 RH |
4566 | } |
4567 | } | |
4568 | ||
252b5132 RH |
4569 | elf_tdata (abfd)->next_file_pos = off; |
4570 | ||
b34976b6 | 4571 | return TRUE; |
252b5132 RH |
4572 | } |
4573 | ||
252b5132 RH |
4574 | /* Work out the file positions of all the sections. This is called by |
4575 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4576 | VMAs must be known before this is called. | |
4577 | ||
e0638f70 AM |
4578 | Reloc sections come in two flavours: Those processed specially as |
4579 | "side-channel" data attached to a section to which they apply, and | |
4580 | those that bfd doesn't process as relocations. The latter sort are | |
4581 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4582 | consider the former sort here, unless they form part of the loadable | |
4583 | image. Reloc sections not assigned here will be handled later by | |
4584 | assign_file_positions_for_relocs. | |
252b5132 RH |
4585 | |
4586 | We also don't set the positions of the .symtab and .strtab here. */ | |
4587 | ||
b34976b6 | 4588 | static bfd_boolean |
c84fca4d AO |
4589 | assign_file_positions_except_relocs (bfd *abfd, |
4590 | struct bfd_link_info *link_info) | |
252b5132 | 4591 | { |
5c182d5f AM |
4592 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4593 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4594 | file_ptr off; |
9c5bfbb7 | 4595 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4596 | |
4597 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4598 | && bfd_get_format (abfd) != bfd_core) | |
4599 | { | |
5c182d5f AM |
4600 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4601 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4602 | Elf_Internal_Shdr **hdrpp; |
4603 | unsigned int i; | |
4604 | ||
4605 | /* Start after the ELF header. */ | |
4606 | off = i_ehdrp->e_ehsize; | |
4607 | ||
4608 | /* We are not creating an executable, which means that we are | |
4609 | not creating a program header, and that the actual order of | |
4610 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4611 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4612 | { |
4613 | Elf_Internal_Shdr *hdr; | |
4614 | ||
4615 | hdr = *hdrpp; | |
e0638f70 AM |
4616 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4617 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4618 | || i == tdata->symtab_section |
4619 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4620 | || i == tdata->strtab_section) |
4621 | { | |
4622 | hdr->sh_offset = -1; | |
252b5132 | 4623 | } |
9ad5cbcf | 4624 | else |
b34976b6 | 4625 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4626 | |
9ad5cbcf AM |
4627 | if (i == SHN_LORESERVE - 1) |
4628 | { | |
4629 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4630 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4631 | } | |
252b5132 RH |
4632 | } |
4633 | } | |
4634 | else | |
4635 | { | |
f3520d2f AM |
4636 | unsigned int alloc; |
4637 | ||
252b5132 | 4638 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4639 | assignment of sections to segments. */ |
f3520d2f AM |
4640 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4641 | return FALSE; | |
4642 | ||
4643 | /* And for non-load sections. */ | |
4644 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4645 | return FALSE; | |
4646 | ||
e36284ab AM |
4647 | if (bed->elf_backend_modify_program_headers != NULL) |
4648 | { | |
4649 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4650 | return FALSE; | |
4651 | } | |
4652 | ||
f3520d2f AM |
4653 | /* Write out the program headers. */ |
4654 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4655 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4656 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4657 | return FALSE; |
252b5132 | 4658 | |
5c182d5f | 4659 | off = tdata->next_file_pos; |
252b5132 RH |
4660 | } |
4661 | ||
4662 | /* Place the section headers. */ | |
45d6a902 | 4663 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4664 | i_ehdrp->e_shoff = off; |
4665 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4666 | ||
5c182d5f | 4667 | tdata->next_file_pos = off; |
252b5132 | 4668 | |
b34976b6 | 4669 | return TRUE; |
252b5132 RH |
4670 | } |
4671 | ||
b34976b6 | 4672 | static bfd_boolean |
217aa764 | 4673 | prep_headers (bfd *abfd) |
252b5132 RH |
4674 | { |
4675 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4676 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4677 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4678 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4679 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4680 | |
4681 | i_ehdrp = elf_elfheader (abfd); | |
4682 | i_shdrp = elf_elfsections (abfd); | |
4683 | ||
2b0f7ef9 | 4684 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4685 | if (shstrtab == NULL) |
b34976b6 | 4686 | return FALSE; |
252b5132 RH |
4687 | |
4688 | elf_shstrtab (abfd) = shstrtab; | |
4689 | ||
4690 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4691 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4692 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4693 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4694 | ||
4695 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4696 | i_ehdrp->e_ident[EI_DATA] = | |
4697 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4698 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4699 | ||
252b5132 RH |
4700 | if ((abfd->flags & DYNAMIC) != 0) |
4701 | i_ehdrp->e_type = ET_DYN; | |
4702 | else if ((abfd->flags & EXEC_P) != 0) | |
4703 | i_ehdrp->e_type = ET_EXEC; | |
4704 | else if (bfd_get_format (abfd) == bfd_core) | |
4705 | i_ehdrp->e_type = ET_CORE; | |
4706 | else | |
4707 | i_ehdrp->e_type = ET_REL; | |
4708 | ||
4709 | switch (bfd_get_arch (abfd)) | |
4710 | { | |
4711 | case bfd_arch_unknown: | |
4712 | i_ehdrp->e_machine = EM_NONE; | |
4713 | break; | |
aa4f99bb AO |
4714 | |
4715 | /* There used to be a long list of cases here, each one setting | |
4716 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4717 | in the corresponding bfd definition. To avoid duplication, | |
4718 | the switch was removed. Machines that need special handling | |
4719 | can generally do it in elf_backend_final_write_processing(), | |
4720 | unless they need the information earlier than the final write. | |
4721 | Such need can generally be supplied by replacing the tests for | |
4722 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4723 | default: |
9c5bfbb7 AM |
4724 | i_ehdrp->e_machine = bed->elf_machine_code; |
4725 | } | |
aa4f99bb | 4726 | |
252b5132 RH |
4727 | i_ehdrp->e_version = bed->s->ev_current; |
4728 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4729 | ||
c044fabd | 4730 | /* No program header, for now. */ |
252b5132 RH |
4731 | i_ehdrp->e_phoff = 0; |
4732 | i_ehdrp->e_phentsize = 0; | |
4733 | i_ehdrp->e_phnum = 0; | |
4734 | ||
c044fabd | 4735 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4736 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4737 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4738 | ||
c044fabd | 4739 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4740 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4741 | /* It all happens later. */ |
4742 | ; | |
252b5132 RH |
4743 | else |
4744 | { | |
4745 | i_ehdrp->e_phentsize = 0; | |
4746 | i_phdrp = 0; | |
4747 | i_ehdrp->e_phoff = 0; | |
4748 | } | |
4749 | ||
4750 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4751 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4752 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4753 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4754 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4755 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4756 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4757 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4758 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4759 | return FALSE; |
252b5132 | 4760 | |
b34976b6 | 4761 | return TRUE; |
252b5132 RH |
4762 | } |
4763 | ||
4764 | /* Assign file positions for all the reloc sections which are not part | |
4765 | of the loadable file image. */ | |
4766 | ||
4767 | void | |
217aa764 | 4768 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4769 | { |
4770 | file_ptr off; | |
9ad5cbcf | 4771 | unsigned int i, num_sec; |
252b5132 RH |
4772 | Elf_Internal_Shdr **shdrpp; |
4773 | ||
4774 | off = elf_tdata (abfd)->next_file_pos; | |
4775 | ||
9ad5cbcf AM |
4776 | num_sec = elf_numsections (abfd); |
4777 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4778 | { |
4779 | Elf_Internal_Shdr *shdrp; | |
4780 | ||
4781 | shdrp = *shdrpp; | |
4782 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4783 | && shdrp->sh_offset == -1) | |
b34976b6 | 4784 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4785 | } |
4786 | ||
4787 | elf_tdata (abfd)->next_file_pos = off; | |
4788 | } | |
4789 | ||
b34976b6 | 4790 | bfd_boolean |
217aa764 | 4791 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4792 | { |
9c5bfbb7 | 4793 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4794 | Elf_Internal_Ehdr *i_ehdrp; |
4795 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4796 | bfd_boolean failed; |
9ad5cbcf | 4797 | unsigned int count, num_sec; |
252b5132 RH |
4798 | |
4799 | if (! abfd->output_has_begun | |
217aa764 | 4800 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4801 | return FALSE; |
252b5132 RH |
4802 | |
4803 | i_shdrp = elf_elfsections (abfd); | |
4804 | i_ehdrp = elf_elfheader (abfd); | |
4805 | ||
b34976b6 | 4806 | failed = FALSE; |
252b5132 RH |
4807 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4808 | if (failed) | |
b34976b6 | 4809 | return FALSE; |
252b5132 RH |
4810 | |
4811 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4812 | ||
c044fabd | 4813 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4814 | num_sec = elf_numsections (abfd); |
4815 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4816 | { |
4817 | if (bed->elf_backend_section_processing) | |
4818 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4819 | if (i_shdrp[count]->contents) | |
4820 | { | |
dc810e39 AM |
4821 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4822 | ||
252b5132 | 4823 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4824 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4825 | return FALSE; |
252b5132 | 4826 | } |
9ad5cbcf AM |
4827 | if (count == SHN_LORESERVE - 1) |
4828 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4829 | } |
4830 | ||
4831 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4832 | if (elf_shstrtab (abfd) != NULL |
4833 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 4834 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 4835 | return FALSE; |
252b5132 RH |
4836 | |
4837 | if (bed->elf_backend_final_write_processing) | |
4838 | (*bed->elf_backend_final_write_processing) (abfd, | |
4839 | elf_tdata (abfd)->linker); | |
4840 | ||
ff59fc36 RM |
4841 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
4842 | return FALSE; | |
4843 | ||
4844 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
4845 | if (elf_tdata (abfd)->after_write_object_contents) |
4846 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
4847 | |
4848 | return TRUE; | |
252b5132 RH |
4849 | } |
4850 | ||
b34976b6 | 4851 | bfd_boolean |
217aa764 | 4852 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4853 | { |
c044fabd | 4854 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4855 | return _bfd_elf_write_object_contents (abfd); |
4856 | } | |
c044fabd KH |
4857 | |
4858 | /* Given a section, search the header to find them. */ | |
4859 | ||
252b5132 | 4860 | int |
198beae2 | 4861 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4862 | { |
9c5bfbb7 | 4863 | const struct elf_backend_data *bed; |
252b5132 | 4864 | int index; |
252b5132 | 4865 | |
9ad5cbcf AM |
4866 | if (elf_section_data (asect) != NULL |
4867 | && elf_section_data (asect)->this_idx != 0) | |
4868 | return elf_section_data (asect)->this_idx; | |
4869 | ||
4870 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4871 | index = SHN_ABS; |
4872 | else if (bfd_is_com_section (asect)) | |
4873 | index = SHN_COMMON; | |
4874 | else if (bfd_is_und_section (asect)) | |
4875 | index = SHN_UNDEF; | |
4876 | else | |
6dc132d9 | 4877 | index = -1; |
252b5132 | 4878 | |
af746e92 | 4879 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4880 | if (bed->elf_backend_section_from_bfd_section) |
4881 | { | |
af746e92 | 4882 | int retval = index; |
9ad5cbcf | 4883 | |
af746e92 AM |
4884 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4885 | return retval; | |
252b5132 RH |
4886 | } |
4887 | ||
af746e92 AM |
4888 | if (index == -1) |
4889 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4890 | |
af746e92 | 4891 | return index; |
252b5132 RH |
4892 | } |
4893 | ||
4894 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4895 | on error. */ | |
4896 | ||
4897 | int | |
217aa764 | 4898 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4899 | { |
4900 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4901 | int idx; | |
4902 | flagword flags = asym_ptr->flags; | |
4903 | ||
4904 | /* When gas creates relocations against local labels, it creates its | |
4905 | own symbol for the section, but does put the symbol into the | |
4906 | symbol chain, so udata is 0. When the linker is generating | |
4907 | relocatable output, this section symbol may be for one of the | |
4908 | input sections rather than the output section. */ | |
4909 | if (asym_ptr->udata.i == 0 | |
4910 | && (flags & BSF_SECTION_SYM) | |
4911 | && asym_ptr->section) | |
4912 | { | |
5372391b | 4913 | asection *sec; |
252b5132 RH |
4914 | int indx; |
4915 | ||
5372391b AM |
4916 | sec = asym_ptr->section; |
4917 | if (sec->owner != abfd && sec->output_section != NULL) | |
4918 | sec = sec->output_section; | |
4919 | if (sec->owner == abfd | |
4920 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 4921 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
4922 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
4923 | } | |
4924 | ||
4925 | idx = asym_ptr->udata.i; | |
4926 | ||
4927 | if (idx == 0) | |
4928 | { | |
4929 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 4930 | which is used in a relocation entry. */ |
252b5132 | 4931 | (*_bfd_error_handler) |
d003868e AM |
4932 | (_("%B: symbol `%s' required but not present"), |
4933 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
4934 | bfd_set_error (bfd_error_no_symbols); |
4935 | return -1; | |
4936 | } | |
4937 | ||
4938 | #if DEBUG & 4 | |
4939 | { | |
4940 | fprintf (stderr, | |
661a3fd4 | 4941 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
4942 | (long) asym_ptr, asym_ptr->name, idx, flags, |
4943 | elf_symbol_flags (flags)); | |
4944 | fflush (stderr); | |
4945 | } | |
4946 | #endif | |
4947 | ||
4948 | return idx; | |
4949 | } | |
4950 | ||
84d1d650 | 4951 | /* Rewrite program header information. */ |
252b5132 | 4952 | |
b34976b6 | 4953 | static bfd_boolean |
84d1d650 | 4954 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 4955 | { |
b34976b6 AM |
4956 | Elf_Internal_Ehdr *iehdr; |
4957 | struct elf_segment_map *map; | |
4958 | struct elf_segment_map *map_first; | |
4959 | struct elf_segment_map **pointer_to_map; | |
4960 | Elf_Internal_Phdr *segment; | |
4961 | asection *section; | |
4962 | unsigned int i; | |
4963 | unsigned int num_segments; | |
4964 | bfd_boolean phdr_included = FALSE; | |
4965 | bfd_vma maxpagesize; | |
4966 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
4967 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 4968 | const struct elf_backend_data *bed; |
bc67d8a6 | 4969 | |
caf47ea6 | 4970 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
4971 | iehdr = elf_elfheader (ibfd); |
4972 | ||
bc67d8a6 | 4973 | map_first = NULL; |
c044fabd | 4974 | pointer_to_map = &map_first; |
252b5132 RH |
4975 | |
4976 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
4977 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
4978 | ||
4979 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
4980 | #define SEGMENT_END(segment, start) \ |
4981 | (start + (segment->p_memsz > segment->p_filesz \ | |
4982 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 4983 | |
eecdbe52 JJ |
4984 | #define SECTION_SIZE(section, segment) \ |
4985 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
4986 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 4987 | ? section->size : 0) |
eecdbe52 | 4988 | |
b34976b6 | 4989 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4990 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
4991 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
4992 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 4993 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4994 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 4995 | |
b34976b6 | 4996 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4997 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
4998 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
4999 | (section->lma >= base \ | |
eecdbe52 | 5000 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5001 | <= SEGMENT_END (segment, base))) |
252b5132 | 5002 | |
c044fabd | 5003 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5004 | #define IS_COREFILE_NOTE(p, s) \ |
5005 | (p->p_type == PT_NOTE \ | |
5006 | && bfd_get_format (ibfd) == bfd_core \ | |
5007 | && s->vma == 0 && s->lma == 0 \ | |
5008 | && (bfd_vma) s->filepos >= p->p_offset \ | |
cb3ff1e5 | 5009 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5010 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5011 | |
5012 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5013 | linker, which generates a PT_INTERP section with p_vaddr and | |
5014 | p_memsz set to 0. */ | |
aecc8f8a AM |
5015 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5016 | (p->p_vaddr == 0 \ | |
5017 | && p->p_paddr == 0 \ | |
5018 | && p->p_memsz == 0 \ | |
5019 | && p->p_filesz > 0 \ | |
5020 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5021 | && s->size > 0 \ |
aecc8f8a | 5022 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5023 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5024 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5025 | |
bc67d8a6 NC |
5026 | /* Decide if the given section should be included in the given segment. |
5027 | A section will be included if: | |
f5ffc919 | 5028 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5029 | if that is set for the segment and the VMA otherwise, |
bc67d8a6 NC |
5030 | 2. It is an allocated segment, |
5031 | 3. There is an output section associated with it, | |
eecdbe52 | 5032 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5033 | 5. PT_GNU_STACK segments do not include any sections. |
5034 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5035 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5036 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5037 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5038 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5039 | ((((segment->p_paddr \ |
5040 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5041 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5042 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5043 | || IS_COREFILE_NOTE (segment, section)) \ |
03394ac9 | 5044 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5045 | && (segment->p_type != PT_TLS \ |
5046 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5047 | && (segment->p_type == PT_LOAD \ | |
5048 | || segment->p_type == PT_TLS \ | |
5049 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5050 | && (segment->p_type != PT_DYNAMIC \ |
5051 | || SECTION_SIZE (section, segment) > 0 \ | |
5052 | || (segment->p_paddr \ | |
08a40648 AM |
5053 | ? segment->p_paddr != section->lma \ |
5054 | : segment->p_vaddr != section->vma) \ | |
6f79b219 | 5055 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ |
08a40648 | 5056 | == 0)) \ |
82e51918 | 5057 | && ! section->segment_mark) |
bc67d8a6 | 5058 | |
9f17e2a6 L |
5059 | /* If the output section of a section in the input segment is NULL, |
5060 | it is removed from the corresponding output segment. */ | |
5061 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5062 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5063 | && section->output_section != NULL) | |
5064 | ||
b34976b6 | 5065 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5066 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5067 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5068 | ||
5069 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5070 | their VMA address ranges and their LMA address ranges overlap. | |
5071 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5072 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5073 | to the same VMA range, but with the .data section mapped to a different | |
5074 | LMA. */ | |
aecc8f8a | 5075 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5076 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5077 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5078 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5079 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5080 | |
5081 | /* Initialise the segment mark field. */ | |
5082 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5083 | section->segment_mark = FALSE; |
bc67d8a6 | 5084 | |
252b5132 | 5085 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5086 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5087 | in the loadable segments. These can be created by weird |
aecc8f8a | 5088 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5089 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5090 | i < num_segments; | |
c044fabd | 5091 | i++, segment++) |
252b5132 | 5092 | { |
252b5132 | 5093 | unsigned int j; |
c044fabd | 5094 | Elf_Internal_Phdr *segment2; |
252b5132 | 5095 | |
aecc8f8a AM |
5096 | if (segment->p_type == PT_INTERP) |
5097 | for (section = ibfd->sections; section; section = section->next) | |
5098 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5099 | { | |
5100 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5101 | assignment code will work. */ |
aecc8f8a AM |
5102 | segment->p_vaddr = section->vma; |
5103 | break; | |
5104 | } | |
5105 | ||
bc67d8a6 NC |
5106 | if (segment->p_type != PT_LOAD) |
5107 | continue; | |
c044fabd | 5108 | |
bc67d8a6 | 5109 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5110 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5111 | { |
5112 | bfd_signed_vma extra_length; | |
c044fabd | 5113 | |
bc67d8a6 NC |
5114 | if (segment2->p_type != PT_LOAD |
5115 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5116 | continue; | |
c044fabd | 5117 | |
bc67d8a6 NC |
5118 | /* Merge the two segments together. */ |
5119 | if (segment2->p_vaddr < segment->p_vaddr) | |
5120 | { | |
c044fabd | 5121 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5122 | SEGMENT. */ |
bc67d8a6 NC |
5123 | extra_length = |
5124 | SEGMENT_END (segment, segment->p_vaddr) | |
5125 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5126 | |
bc67d8a6 NC |
5127 | if (extra_length > 0) |
5128 | { | |
5129 | segment2->p_memsz += extra_length; | |
5130 | segment2->p_filesz += extra_length; | |
5131 | } | |
c044fabd | 5132 | |
bc67d8a6 | 5133 | segment->p_type = PT_NULL; |
c044fabd | 5134 | |
bc67d8a6 NC |
5135 | /* Since we have deleted P we must restart the outer loop. */ |
5136 | i = 0; | |
5137 | segment = elf_tdata (ibfd)->phdr; | |
5138 | break; | |
5139 | } | |
5140 | else | |
5141 | { | |
c044fabd | 5142 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5143 | SEGMENT2. */ |
bc67d8a6 NC |
5144 | extra_length = |
5145 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5146 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5147 | |
bc67d8a6 NC |
5148 | if (extra_length > 0) |
5149 | { | |
5150 | segment->p_memsz += extra_length; | |
5151 | segment->p_filesz += extra_length; | |
5152 | } | |
c044fabd | 5153 | |
bc67d8a6 NC |
5154 | segment2->p_type = PT_NULL; |
5155 | } | |
5156 | } | |
5157 | } | |
c044fabd | 5158 | |
bc67d8a6 NC |
5159 | /* The second scan attempts to assign sections to segments. */ |
5160 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5161 | i < num_segments; | |
5162 | i ++, segment ++) | |
5163 | { | |
5164 | unsigned int section_count; | |
5165 | asection ** sections; | |
5166 | asection * output_section; | |
5167 | unsigned int isec; | |
5168 | bfd_vma matching_lma; | |
5169 | bfd_vma suggested_lma; | |
5170 | unsigned int j; | |
dc810e39 | 5171 | bfd_size_type amt; |
9f17e2a6 | 5172 | asection * first_section; |
bc67d8a6 NC |
5173 | |
5174 | if (segment->p_type == PT_NULL) | |
5175 | continue; | |
c044fabd | 5176 | |
9f17e2a6 | 5177 | first_section = NULL; |
bc67d8a6 | 5178 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5179 | for (section = ibfd->sections, section_count = 0; |
5180 | section != NULL; | |
5181 | section = section->next) | |
9f17e2a6 L |
5182 | { |
5183 | /* Find the first section in the input segment, which may be | |
5184 | removed from the corresponding output segment. */ | |
5185 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5186 | { | |
5187 | if (first_section == NULL) | |
5188 | first_section = section; | |
5189 | if (section->output_section != NULL) | |
5190 | ++section_count; | |
5191 | } | |
5192 | } | |
811072d8 | 5193 | |
b5f852ea NC |
5194 | /* Allocate a segment map big enough to contain |
5195 | all of the sections we have selected. */ | |
dc810e39 AM |
5196 | amt = sizeof (struct elf_segment_map); |
5197 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5198 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5199 | if (map == NULL) |
b34976b6 | 5200 | return FALSE; |
252b5132 RH |
5201 | |
5202 | /* Initialise the fields of the segment map. Default to | |
5203 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5204 | map->next = NULL; |
5205 | map->p_type = segment->p_type; | |
5206 | map->p_flags = segment->p_flags; | |
5207 | map->p_flags_valid = 1; | |
55d55ac7 | 5208 | |
9f17e2a6 L |
5209 | /* If the first section in the input segment is removed, there is |
5210 | no need to preserve segment physical address in the corresponding | |
5211 | output segment. */ | |
945c025a | 5212 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5213 | { |
5214 | map->p_paddr = segment->p_paddr; | |
5215 | map->p_paddr_valid = 1; | |
5216 | } | |
252b5132 RH |
5217 | |
5218 | /* Determine if this segment contains the ELF file header | |
5219 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5220 | map->includes_filehdr = (segment->p_offset == 0 |
5221 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5222 | |
bc67d8a6 | 5223 | map->includes_phdrs = 0; |
252b5132 | 5224 | |
bc67d8a6 | 5225 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5226 | { |
bc67d8a6 NC |
5227 | map->includes_phdrs = |
5228 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5229 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5230 | >= ((bfd_vma) iehdr->e_phoff |
5231 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5232 | |
bc67d8a6 | 5233 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5234 | phdr_included = TRUE; |
252b5132 RH |
5235 | } |
5236 | ||
bc67d8a6 | 5237 | if (section_count == 0) |
252b5132 RH |
5238 | { |
5239 | /* Special segments, such as the PT_PHDR segment, may contain | |
5240 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5241 | something. They are allowed by the ELF spec however, so only |
5242 | a warning is produced. */ | |
bc67d8a6 | 5243 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5244 | (*_bfd_error_handler) |
d003868e AM |
5245 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5246 | ibfd); | |
252b5132 | 5247 | |
bc67d8a6 | 5248 | map->count = 0; |
c044fabd KH |
5249 | *pointer_to_map = map; |
5250 | pointer_to_map = &map->next; | |
252b5132 RH |
5251 | |
5252 | continue; | |
5253 | } | |
5254 | ||
5255 | /* Now scan the sections in the input BFD again and attempt | |
5256 | to add their corresponding output sections to the segment map. | |
5257 | The problem here is how to handle an output section which has | |
5258 | been moved (ie had its LMA changed). There are four possibilities: | |
5259 | ||
5260 | 1. None of the sections have been moved. | |
5261 | In this case we can continue to use the segment LMA from the | |
5262 | input BFD. | |
5263 | ||
5264 | 2. All of the sections have been moved by the same amount. | |
5265 | In this case we can change the segment's LMA to match the LMA | |
5266 | of the first section. | |
5267 | ||
5268 | 3. Some of the sections have been moved, others have not. | |
5269 | In this case those sections which have not been moved can be | |
5270 | placed in the current segment which will have to have its size, | |
5271 | and possibly its LMA changed, and a new segment or segments will | |
5272 | have to be created to contain the other sections. | |
5273 | ||
b5f852ea | 5274 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5275 | In this case we can change the segment's LMA to match the LMA |
5276 | of the first section and we will have to create a new segment | |
5277 | or segments to contain the other sections. | |
5278 | ||
5279 | In order to save time, we allocate an array to hold the section | |
5280 | pointers that we are interested in. As these sections get assigned | |
5281 | to a segment, they are removed from this array. */ | |
5282 | ||
0b14c2aa L |
5283 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5284 | to work around this long long bug. */ | |
d0fb9a8d | 5285 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5286 | if (sections == NULL) |
b34976b6 | 5287 | return FALSE; |
252b5132 RH |
5288 | |
5289 | /* Step One: Scan for segment vs section LMA conflicts. | |
5290 | Also add the sections to the section array allocated above. | |
5291 | Also add the sections to the current segment. In the common | |
5292 | case, where the sections have not been moved, this means that | |
5293 | we have completely filled the segment, and there is nothing | |
5294 | more to do. */ | |
252b5132 | 5295 | isec = 0; |
72730e0c | 5296 | matching_lma = 0; |
252b5132 RH |
5297 | suggested_lma = 0; |
5298 | ||
bc67d8a6 NC |
5299 | for (j = 0, section = ibfd->sections; |
5300 | section != NULL; | |
5301 | section = section->next) | |
252b5132 | 5302 | { |
caf47ea6 | 5303 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5304 | { |
bc67d8a6 NC |
5305 | output_section = section->output_section; |
5306 | ||
5307 | sections[j ++] = section; | |
252b5132 RH |
5308 | |
5309 | /* The Solaris native linker always sets p_paddr to 0. | |
5310 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5311 | correct value. Note - some backends require that |
5312 | p_paddr be left as zero. */ | |
bc67d8a6 | 5313 | if (segment->p_paddr == 0 |
4455705d | 5314 | && segment->p_vaddr != 0 |
5e8d7549 | 5315 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5316 | && isec == 0 |
bc67d8a6 NC |
5317 | && output_section->lma != 0 |
5318 | && (output_section->vma == (segment->p_vaddr | |
5319 | + (map->includes_filehdr | |
5320 | ? iehdr->e_ehsize | |
5321 | : 0) | |
5322 | + (map->includes_phdrs | |
079e9a2f AM |
5323 | ? (iehdr->e_phnum |
5324 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5325 | : 0)))) |
5326 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5327 | |
5328 | /* Match up the physical address of the segment with the | |
5329 | LMA address of the output section. */ | |
bc67d8a6 | 5330 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5331 | || IS_COREFILE_NOTE (segment, section) |
5332 | || (bed->want_p_paddr_set_to_zero && | |
08a40648 | 5333 | IS_CONTAINED_BY_VMA (output_section, segment))) |
252b5132 | 5334 | { |
c981028a | 5335 | if (matching_lma == 0 || output_section->lma < matching_lma) |
bc67d8a6 | 5336 | matching_lma = output_section->lma; |
252b5132 RH |
5337 | |
5338 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5339 | then it does not overlap any other section within that |
252b5132 | 5340 | segment. */ |
bc67d8a6 | 5341 | map->sections[isec ++] = output_section; |
252b5132 RH |
5342 | } |
5343 | else if (suggested_lma == 0) | |
bc67d8a6 | 5344 | suggested_lma = output_section->lma; |
252b5132 RH |
5345 | } |
5346 | } | |
5347 | ||
bc67d8a6 | 5348 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5349 | |
5350 | /* Step Two: Adjust the physical address of the current segment, | |
5351 | if necessary. */ | |
bc67d8a6 | 5352 | if (isec == section_count) |
252b5132 RH |
5353 | { |
5354 | /* All of the sections fitted within the segment as currently | |
5355 | specified. This is the default case. Add the segment to | |
5356 | the list of built segments and carry on to process the next | |
5357 | program header in the input BFD. */ | |
bc67d8a6 | 5358 | map->count = section_count; |
c044fabd KH |
5359 | *pointer_to_map = map; |
5360 | pointer_to_map = &map->next; | |
08a40648 | 5361 | |
3271a814 NS |
5362 | if (matching_lma != map->p_paddr |
5363 | && !map->includes_filehdr && !map->includes_phdrs) | |
5364 | /* There is some padding before the first section in the | |
5365 | segment. So, we must account for that in the output | |
5366 | segment's vma. */ | |
5367 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5368 | |
252b5132 RH |
5369 | free (sections); |
5370 | continue; | |
5371 | } | |
252b5132 RH |
5372 | else |
5373 | { | |
72730e0c AM |
5374 | if (matching_lma != 0) |
5375 | { | |
5376 | /* At least one section fits inside the current segment. | |
5377 | Keep it, but modify its physical address to match the | |
5378 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5379 | map->p_paddr = matching_lma; |
72730e0c AM |
5380 | } |
5381 | else | |
5382 | { | |
5383 | /* None of the sections fitted inside the current segment. | |
5384 | Change the current segment's physical address to match | |
5385 | the LMA of the first section. */ | |
bc67d8a6 | 5386 | map->p_paddr = suggested_lma; |
72730e0c AM |
5387 | } |
5388 | ||
bc67d8a6 NC |
5389 | /* Offset the segment physical address from the lma |
5390 | to allow for space taken up by elf headers. */ | |
5391 | if (map->includes_filehdr) | |
5392 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5393 | |
bc67d8a6 NC |
5394 | if (map->includes_phdrs) |
5395 | { | |
5396 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5397 | ||
5398 | /* iehdr->e_phnum is just an estimate of the number | |
5399 | of program headers that we will need. Make a note | |
5400 | here of the number we used and the segment we chose | |
5401 | to hold these headers, so that we can adjust the | |
5402 | offset when we know the correct value. */ | |
5403 | phdr_adjust_num = iehdr->e_phnum; | |
5404 | phdr_adjust_seg = map; | |
5405 | } | |
252b5132 RH |
5406 | } |
5407 | ||
5408 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5409 | those that fit to the current segment and removing them from the |
252b5132 RH |
5410 | sections array; but making sure not to leave large gaps. Once all |
5411 | possible sections have been assigned to the current segment it is | |
5412 | added to the list of built segments and if sections still remain | |
5413 | to be assigned, a new segment is constructed before repeating | |
5414 | the loop. */ | |
5415 | isec = 0; | |
5416 | do | |
5417 | { | |
bc67d8a6 | 5418 | map->count = 0; |
252b5132 RH |
5419 | suggested_lma = 0; |
5420 | ||
5421 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5422 | for (j = 0; j < section_count; j++) |
252b5132 | 5423 | { |
bc67d8a6 | 5424 | section = sections[j]; |
252b5132 | 5425 | |
bc67d8a6 | 5426 | if (section == NULL) |
252b5132 RH |
5427 | continue; |
5428 | ||
bc67d8a6 | 5429 | output_section = section->output_section; |
252b5132 | 5430 | |
bc67d8a6 | 5431 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5432 | |
bc67d8a6 NC |
5433 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5434 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5435 | { |
bc67d8a6 | 5436 | if (map->count == 0) |
252b5132 RH |
5437 | { |
5438 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5439 | the beginning of the segment, then something is |
5440 | wrong. */ | |
5441 | if (output_section->lma != | |
5442 | (map->p_paddr | |
5443 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5444 | + (map->includes_phdrs | |
5445 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5446 | : 0))) | |
252b5132 RH |
5447 | abort (); |
5448 | } | |
5449 | else | |
5450 | { | |
5451 | asection * prev_sec; | |
252b5132 | 5452 | |
bc67d8a6 | 5453 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5454 | |
5455 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5456 | and the start of this section is more than |
5457 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5458 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5459 | maxpagesize) |
caf47ea6 | 5460 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5461 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5462 | > output_section->lma)) |
252b5132 RH |
5463 | { |
5464 | if (suggested_lma == 0) | |
bc67d8a6 | 5465 | suggested_lma = output_section->lma; |
252b5132 RH |
5466 | |
5467 | continue; | |
5468 | } | |
5469 | } | |
5470 | ||
bc67d8a6 | 5471 | map->sections[map->count++] = output_section; |
252b5132 RH |
5472 | ++isec; |
5473 | sections[j] = NULL; | |
b34976b6 | 5474 | section->segment_mark = TRUE; |
252b5132 RH |
5475 | } |
5476 | else if (suggested_lma == 0) | |
bc67d8a6 | 5477 | suggested_lma = output_section->lma; |
252b5132 RH |
5478 | } |
5479 | ||
bc67d8a6 | 5480 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5481 | |
5482 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5483 | *pointer_to_map = map; |
5484 | pointer_to_map = &map->next; | |
252b5132 | 5485 | |
bc67d8a6 | 5486 | if (isec < section_count) |
252b5132 RH |
5487 | { |
5488 | /* We still have not allocated all of the sections to | |
5489 | segments. Create a new segment here, initialise it | |
5490 | and carry on looping. */ | |
dc810e39 AM |
5491 | amt = sizeof (struct elf_segment_map); |
5492 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5493 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5494 | if (map == NULL) |
5ed6aba4 NC |
5495 | { |
5496 | free (sections); | |
5497 | return FALSE; | |
5498 | } | |
252b5132 RH |
5499 | |
5500 | /* Initialise the fields of the segment map. Set the physical | |
5501 | physical address to the LMA of the first section that has | |
5502 | not yet been assigned. */ | |
bc67d8a6 NC |
5503 | map->next = NULL; |
5504 | map->p_type = segment->p_type; | |
5505 | map->p_flags = segment->p_flags; | |
5506 | map->p_flags_valid = 1; | |
5507 | map->p_paddr = suggested_lma; | |
5508 | map->p_paddr_valid = 1; | |
5509 | map->includes_filehdr = 0; | |
5510 | map->includes_phdrs = 0; | |
252b5132 RH |
5511 | } |
5512 | } | |
bc67d8a6 | 5513 | while (isec < section_count); |
252b5132 RH |
5514 | |
5515 | free (sections); | |
5516 | } | |
5517 | ||
5518 | /* The Solaris linker creates program headers in which all the | |
5519 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5520 | file, we get confused. Check for this case, and if we find it | |
5521 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5522 | for (map = map_first; map != NULL; map = map->next) |
5523 | if (map->p_paddr != 0) | |
252b5132 | 5524 | break; |
bc67d8a6 | 5525 | if (map == NULL) |
b5f852ea NC |
5526 | for (map = map_first; map != NULL; map = map->next) |
5527 | map->p_paddr_valid = 0; | |
252b5132 | 5528 | |
bc67d8a6 NC |
5529 | elf_tdata (obfd)->segment_map = map_first; |
5530 | ||
5531 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5532 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5533 | the offset if necessary. */ |
5534 | if (phdr_adjust_seg != NULL) | |
5535 | { | |
5536 | unsigned int count; | |
c044fabd | 5537 | |
bc67d8a6 | 5538 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5539 | count++; |
252b5132 | 5540 | |
bc67d8a6 NC |
5541 | if (count > phdr_adjust_num) |
5542 | phdr_adjust_seg->p_paddr | |
5543 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5544 | } | |
c044fabd | 5545 | |
bc67d8a6 | 5546 | #undef SEGMENT_END |
eecdbe52 | 5547 | #undef SECTION_SIZE |
bc67d8a6 NC |
5548 | #undef IS_CONTAINED_BY_VMA |
5549 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5550 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5551 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5552 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5553 | #undef INCLUDE_SECTION_IN_SEGMENT |
5554 | #undef SEGMENT_AFTER_SEGMENT | |
5555 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5556 | return TRUE; |
252b5132 RH |
5557 | } |
5558 | ||
84d1d650 L |
5559 | /* Copy ELF program header information. */ |
5560 | ||
5561 | static bfd_boolean | |
5562 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5563 | { | |
5564 | Elf_Internal_Ehdr *iehdr; | |
5565 | struct elf_segment_map *map; | |
5566 | struct elf_segment_map *map_first; | |
5567 | struct elf_segment_map **pointer_to_map; | |
5568 | Elf_Internal_Phdr *segment; | |
5569 | unsigned int i; | |
5570 | unsigned int num_segments; | |
5571 | bfd_boolean phdr_included = FALSE; | |
5572 | ||
5573 | iehdr = elf_elfheader (ibfd); | |
5574 | ||
5575 | map_first = NULL; | |
5576 | pointer_to_map = &map_first; | |
5577 | ||
5578 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5579 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5580 | i < num_segments; | |
5581 | i++, segment++) | |
5582 | { | |
5583 | asection *section; | |
5584 | unsigned int section_count; | |
5585 | bfd_size_type amt; | |
5586 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5587 | asection *first_section = NULL; |
c981028a | 5588 | asection *lowest_section = NULL; |
84d1d650 L |
5589 | |
5590 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5591 | if (segment->p_type == PT_NULL) | |
5592 | continue; | |
5593 | ||
5594 | /* Compute how many sections are in this segment. */ | |
5595 | for (section = ibfd->sections, section_count = 0; | |
5596 | section != NULL; | |
5597 | section = section->next) | |
5598 | { | |
5599 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5600 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5601 | { |
53020534 | 5602 | if (!first_section) |
c981028a DJ |
5603 | first_section = lowest_section = section; |
5604 | if (section->lma < lowest_section->lma) | |
5605 | lowest_section = section; | |
3271a814 NS |
5606 | section_count++; |
5607 | } | |
84d1d650 L |
5608 | } |
5609 | ||
5610 | /* Allocate a segment map big enough to contain | |
5611 | all of the sections we have selected. */ | |
5612 | amt = sizeof (struct elf_segment_map); | |
5613 | if (section_count != 0) | |
5614 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5615 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5616 | if (map == NULL) |
5617 | return FALSE; | |
5618 | ||
5619 | /* Initialize the fields of the output segment map with the | |
5620 | input segment. */ | |
5621 | map->next = NULL; | |
5622 | map->p_type = segment->p_type; | |
5623 | map->p_flags = segment->p_flags; | |
5624 | map->p_flags_valid = 1; | |
5625 | map->p_paddr = segment->p_paddr; | |
5626 | map->p_paddr_valid = 1; | |
3f570048 AM |
5627 | map->p_align = segment->p_align; |
5628 | map->p_align_valid = 1; | |
3271a814 | 5629 | map->p_vaddr_offset = 0; |
84d1d650 L |
5630 | |
5631 | /* Determine if this segment contains the ELF file header | |
5632 | and if it contains the program headers themselves. */ | |
5633 | map->includes_filehdr = (segment->p_offset == 0 | |
5634 | && segment->p_filesz >= iehdr->e_ehsize); | |
5635 | ||
5636 | map->includes_phdrs = 0; | |
5637 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5638 | { | |
5639 | map->includes_phdrs = | |
5640 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5641 | && (segment->p_offset + segment->p_filesz | |
5642 | >= ((bfd_vma) iehdr->e_phoff | |
5643 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5644 | ||
5645 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5646 | phdr_included = TRUE; | |
5647 | } | |
5648 | ||
3271a814 NS |
5649 | if (!map->includes_phdrs && !map->includes_filehdr) |
5650 | /* There is some other padding before the first section. */ | |
c981028a | 5651 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) |
53020534 | 5652 | - segment->p_paddr); |
08a40648 | 5653 | |
84d1d650 L |
5654 | if (section_count != 0) |
5655 | { | |
5656 | unsigned int isec = 0; | |
5657 | ||
53020534 | 5658 | for (section = first_section; |
84d1d650 L |
5659 | section != NULL; |
5660 | section = section->next) | |
5661 | { | |
5662 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5663 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5664 | { |
5665 | map->sections[isec++] = section->output_section; | |
5666 | if (isec == section_count) | |
5667 | break; | |
5668 | } | |
84d1d650 L |
5669 | } |
5670 | } | |
5671 | ||
5672 | map->count = section_count; | |
5673 | *pointer_to_map = map; | |
5674 | pointer_to_map = &map->next; | |
5675 | } | |
5676 | ||
5677 | elf_tdata (obfd)->segment_map = map_first; | |
5678 | return TRUE; | |
5679 | } | |
5680 | ||
5681 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5682 | information. */ | |
5683 | ||
5684 | static bfd_boolean | |
5685 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5686 | { | |
84d1d650 L |
5687 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5688 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5689 | return TRUE; | |
5690 | ||
5691 | if (elf_tdata (ibfd)->phdr == NULL) | |
5692 | return TRUE; | |
5693 | ||
5694 | if (ibfd->xvec == obfd->xvec) | |
5695 | { | |
cb3ff1e5 NC |
5696 | /* Check to see if any sections in the input BFD |
5697 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5698 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5699 | asection *section, *osec; |
5700 | unsigned int i, num_segments; | |
5701 | Elf_Internal_Shdr *this_hdr; | |
5702 | ||
5703 | /* Initialize the segment mark field. */ | |
5704 | for (section = obfd->sections; section != NULL; | |
5705 | section = section->next) | |
5706 | section->segment_mark = FALSE; | |
5707 | ||
5708 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5709 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5710 | i < num_segments; | |
5711 | i++, segment++) | |
5712 | { | |
5f6999aa NC |
5713 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5714 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5715 | which severly confuses things, so always regenerate the segment | |
5716 | map in this case. */ | |
5717 | if (segment->p_paddr == 0 | |
5718 | && segment->p_memsz == 0 | |
5719 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5720 | goto rewrite; |
5f6999aa | 5721 | |
84d1d650 L |
5722 | for (section = ibfd->sections; |
5723 | section != NULL; section = section->next) | |
5724 | { | |
5725 | /* We mark the output section so that we know it comes | |
5726 | from the input BFD. */ | |
5727 | osec = section->output_section; | |
5728 | if (osec) | |
5729 | osec->segment_mark = TRUE; | |
5730 | ||
5731 | /* Check if this section is covered by the segment. */ | |
5732 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5733 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5734 | { | |
5735 | /* FIXME: Check if its output section is changed or | |
5736 | removed. What else do we need to check? */ | |
5737 | if (osec == NULL | |
5738 | || section->flags != osec->flags | |
5739 | || section->lma != osec->lma | |
5740 | || section->vma != osec->vma | |
5741 | || section->size != osec->size | |
5742 | || section->rawsize != osec->rawsize | |
5743 | || section->alignment_power != osec->alignment_power) | |
5744 | goto rewrite; | |
5745 | } | |
5746 | } | |
5747 | } | |
5748 | ||
cb3ff1e5 | 5749 | /* Check to see if any output section do not come from the |
84d1d650 L |
5750 | input BFD. */ |
5751 | for (section = obfd->sections; section != NULL; | |
5752 | section = section->next) | |
5753 | { | |
5754 | if (section->segment_mark == FALSE) | |
5755 | goto rewrite; | |
5756 | else | |
5757 | section->segment_mark = FALSE; | |
5758 | } | |
5759 | ||
5760 | return copy_elf_program_header (ibfd, obfd); | |
5761 | } | |
5762 | ||
5763 | rewrite: | |
5764 | return rewrite_elf_program_header (ibfd, obfd); | |
5765 | } | |
5766 | ||
ccd2ec6a L |
5767 | /* Initialize private output section information from input section. */ |
5768 | ||
5769 | bfd_boolean | |
5770 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5771 | asection *isec, | |
5772 | bfd *obfd, | |
5773 | asection *osec, | |
5774 | struct bfd_link_info *link_info) | |
5775 | ||
5776 | { | |
5777 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5778 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
5779 | ||
5780 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5781 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
5782 | return TRUE; | |
5783 | ||
e843e0f8 | 5784 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 5785 | output BFD section flags have been set to something different. |
e843e0f8 L |
5786 | elf_fake_sections will set ELF section type based on BFD |
5787 | section flags. */ | |
42bb2e33 AM |
5788 | if (elf_section_type (osec) == SHT_NULL |
5789 | && (osec->flags == isec->flags || !osec->flags)) | |
5790 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
5791 | |
5792 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
5793 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
5794 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
5795 | |
5796 | /* Set things up for objcopy and relocatable link. The output | |
5797 | SHT_GROUP section will have its elf_next_in_group pointing back | |
5798 | to the input group members. Ignore linker created group section. | |
5799 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
5800 | if (need_group) |
5801 | { | |
5802 | if (elf_sec_group (isec) == NULL | |
5803 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5804 | { | |
5805 | if (elf_section_flags (isec) & SHF_GROUP) | |
5806 | elf_section_flags (osec) |= SHF_GROUP; | |
5807 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5808 | elf_group_name (osec) = elf_group_name (isec); | |
5809 | } | |
5810 | } | |
5811 | ||
5812 | ihdr = &elf_section_data (isec)->this_hdr; | |
5813 | ||
5814 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
5815 | don't use the output section of the linked-to section since it | |
5816 | may be NULL at this point. */ | |
5817 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
5818 | { | |
5819 | ohdr = &elf_section_data (osec)->this_hdr; | |
5820 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
5821 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
5822 | } | |
5823 | ||
5824 | osec->use_rela_p = isec->use_rela_p; | |
5825 | ||
5826 | return TRUE; | |
5827 | } | |
5828 | ||
252b5132 RH |
5829 | /* Copy private section information. This copies over the entsize |
5830 | field, and sometimes the info field. */ | |
5831 | ||
b34976b6 | 5832 | bfd_boolean |
217aa764 AM |
5833 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5834 | asection *isec, | |
5835 | bfd *obfd, | |
5836 | asection *osec) | |
252b5132 RH |
5837 | { |
5838 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5839 | ||
5840 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5841 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5842 | return TRUE; |
252b5132 | 5843 | |
252b5132 RH |
5844 | ihdr = &elf_section_data (isec)->this_hdr; |
5845 | ohdr = &elf_section_data (osec)->this_hdr; | |
5846 | ||
5847 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5848 | ||
5849 | if (ihdr->sh_type == SHT_SYMTAB | |
5850 | || ihdr->sh_type == SHT_DYNSYM | |
5851 | || ihdr->sh_type == SHT_GNU_verneed | |
5852 | || ihdr->sh_type == SHT_GNU_verdef) | |
5853 | ohdr->sh_info = ihdr->sh_info; | |
5854 | ||
ccd2ec6a L |
5855 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
5856 | NULL); | |
252b5132 RH |
5857 | } |
5858 | ||
80fccad2 BW |
5859 | /* Copy private header information. */ |
5860 | ||
5861 | bfd_boolean | |
5862 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5863 | { | |
30288845 AM |
5864 | asection *isec; |
5865 | ||
80fccad2 BW |
5866 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5867 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5868 | return TRUE; | |
5869 | ||
5870 | /* Copy over private BFD data if it has not already been copied. | |
5871 | This must be done here, rather than in the copy_private_bfd_data | |
5872 | entry point, because the latter is called after the section | |
5873 | contents have been set, which means that the program headers have | |
5874 | already been worked out. */ | |
5875 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5876 | { | |
5877 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5878 | return FALSE; | |
5879 | } | |
5880 | ||
30288845 AM |
5881 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
5882 | but this might be wrong if we deleted the group section. */ | |
5883 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
5884 | if (elf_section_type (isec) == SHT_GROUP | |
5885 | && isec->output_section == NULL) | |
5886 | { | |
5887 | asection *first = elf_next_in_group (isec); | |
5888 | asection *s = first; | |
5889 | while (s != NULL) | |
5890 | { | |
5891 | if (s->output_section != NULL) | |
5892 | { | |
5893 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
5894 | elf_group_name (s->output_section) = NULL; | |
5895 | } | |
5896 | s = elf_next_in_group (s); | |
5897 | if (s == first) | |
5898 | break; | |
5899 | } | |
5900 | } | |
5901 | ||
80fccad2 BW |
5902 | return TRUE; |
5903 | } | |
5904 | ||
252b5132 RH |
5905 | /* Copy private symbol information. If this symbol is in a section |
5906 | which we did not map into a BFD section, try to map the section | |
5907 | index correctly. We use special macro definitions for the mapped | |
5908 | section indices; these definitions are interpreted by the | |
5909 | swap_out_syms function. */ | |
5910 | ||
9ad5cbcf AM |
5911 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5912 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5913 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5914 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5915 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5916 | |
b34976b6 | 5917 | bfd_boolean |
217aa764 AM |
5918 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5919 | asymbol *isymarg, | |
5920 | bfd *obfd, | |
5921 | asymbol *osymarg) | |
252b5132 RH |
5922 | { |
5923 | elf_symbol_type *isym, *osym; | |
5924 | ||
5925 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5926 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5927 | return TRUE; |
252b5132 RH |
5928 | |
5929 | isym = elf_symbol_from (ibfd, isymarg); | |
5930 | osym = elf_symbol_from (obfd, osymarg); | |
5931 | ||
5932 | if (isym != NULL | |
5933 | && osym != NULL | |
5934 | && bfd_is_abs_section (isym->symbol.section)) | |
5935 | { | |
5936 | unsigned int shndx; | |
5937 | ||
5938 | shndx = isym->internal_elf_sym.st_shndx; | |
5939 | if (shndx == elf_onesymtab (ibfd)) | |
5940 | shndx = MAP_ONESYMTAB; | |
5941 | else if (shndx == elf_dynsymtab (ibfd)) | |
5942 | shndx = MAP_DYNSYMTAB; | |
5943 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5944 | shndx = MAP_STRTAB; | |
5945 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5946 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5947 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5948 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5949 | osym->internal_elf_sym.st_shndx = shndx; |
5950 | } | |
5951 | ||
b34976b6 | 5952 | return TRUE; |
252b5132 RH |
5953 | } |
5954 | ||
5955 | /* Swap out the symbols. */ | |
5956 | ||
b34976b6 | 5957 | static bfd_boolean |
217aa764 AM |
5958 | swap_out_syms (bfd *abfd, |
5959 | struct bfd_strtab_hash **sttp, | |
5960 | int relocatable_p) | |
252b5132 | 5961 | { |
9c5bfbb7 | 5962 | const struct elf_backend_data *bed; |
079e9a2f AM |
5963 | int symcount; |
5964 | asymbol **syms; | |
5965 | struct bfd_strtab_hash *stt; | |
5966 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5967 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5968 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5969 | bfd_byte *outbound_syms; |
5970 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5971 | int idx; |
5972 | bfd_size_type amt; | |
174fd7f9 | 5973 | bfd_boolean name_local_sections; |
252b5132 RH |
5974 | |
5975 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5976 | return FALSE; |
252b5132 | 5977 | |
c044fabd | 5978 | /* Dump out the symtabs. */ |
079e9a2f AM |
5979 | stt = _bfd_elf_stringtab_init (); |
5980 | if (stt == NULL) | |
b34976b6 | 5981 | return FALSE; |
252b5132 | 5982 | |
079e9a2f AM |
5983 | bed = get_elf_backend_data (abfd); |
5984 | symcount = bfd_get_symcount (abfd); | |
5985 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5986 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5987 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5988 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5989 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5990 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5991 | |
5992 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5993 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5994 | ||
d0fb9a8d | 5995 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 5996 | if (outbound_syms == NULL) |
5ed6aba4 NC |
5997 | { |
5998 | _bfd_stringtab_free (stt); | |
5999 | return FALSE; | |
6000 | } | |
217aa764 | 6001 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6002 | |
9ad5cbcf AM |
6003 | outbound_shndx = NULL; |
6004 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6005 | if (symtab_shndx_hdr->sh_name != 0) | |
6006 | { | |
6007 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6008 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6009 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6010 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6011 | { |
6012 | _bfd_stringtab_free (stt); | |
6013 | return FALSE; | |
6014 | } | |
6015 | ||
9ad5cbcf AM |
6016 | symtab_shndx_hdr->contents = outbound_shndx; |
6017 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6018 | symtab_shndx_hdr->sh_size = amt; | |
6019 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6020 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6021 | } | |
6022 | ||
589e6347 | 6023 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6024 | { |
6025 | /* Fill in zeroth symbol and swap it out. */ | |
6026 | Elf_Internal_Sym sym; | |
6027 | sym.st_name = 0; | |
6028 | sym.st_value = 0; | |
6029 | sym.st_size = 0; | |
6030 | sym.st_info = 0; | |
6031 | sym.st_other = 0; | |
6032 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6033 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6034 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6035 | if (outbound_shndx != NULL) |
6036 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6037 | } |
252b5132 | 6038 | |
174fd7f9 RS |
6039 | name_local_sections |
6040 | = (bed->elf_backend_name_local_section_symbols | |
6041 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6042 | ||
079e9a2f AM |
6043 | syms = bfd_get_outsymbols (abfd); |
6044 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6045 | { |
252b5132 | 6046 | Elf_Internal_Sym sym; |
079e9a2f AM |
6047 | bfd_vma value = syms[idx]->value; |
6048 | elf_symbol_type *type_ptr; | |
6049 | flagword flags = syms[idx]->flags; | |
6050 | int type; | |
252b5132 | 6051 | |
174fd7f9 RS |
6052 | if (!name_local_sections |
6053 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6054 | { |
6055 | /* Local section symbols have no name. */ | |
6056 | sym.st_name = 0; | |
6057 | } | |
6058 | else | |
6059 | { | |
6060 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6061 | syms[idx]->name, | |
b34976b6 | 6062 | TRUE, FALSE); |
079e9a2f | 6063 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6064 | { |
6065 | _bfd_stringtab_free (stt); | |
6066 | return FALSE; | |
6067 | } | |
079e9a2f | 6068 | } |
252b5132 | 6069 | |
079e9a2f | 6070 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6071 | |
079e9a2f AM |
6072 | if ((flags & BSF_SECTION_SYM) == 0 |
6073 | && bfd_is_com_section (syms[idx]->section)) | |
6074 | { | |
6075 | /* ELF common symbols put the alignment into the `value' field, | |
6076 | and the size into the `size' field. This is backwards from | |
6077 | how BFD handles it, so reverse it here. */ | |
6078 | sym.st_size = value; | |
6079 | if (type_ptr == NULL | |
6080 | || type_ptr->internal_elf_sym.st_value == 0) | |
6081 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6082 | else | |
6083 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6084 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6085 | (abfd, syms[idx]->section); | |
6086 | } | |
6087 | else | |
6088 | { | |
6089 | asection *sec = syms[idx]->section; | |
6090 | int shndx; | |
252b5132 | 6091 | |
079e9a2f AM |
6092 | if (sec->output_section) |
6093 | { | |
6094 | value += sec->output_offset; | |
6095 | sec = sec->output_section; | |
6096 | } | |
589e6347 | 6097 | |
079e9a2f AM |
6098 | /* Don't add in the section vma for relocatable output. */ |
6099 | if (! relocatable_p) | |
6100 | value += sec->vma; | |
6101 | sym.st_value = value; | |
6102 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6103 | ||
6104 | if (bfd_is_abs_section (sec) | |
6105 | && type_ptr != NULL | |
6106 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6107 | { | |
6108 | /* This symbol is in a real ELF section which we did | |
6109 | not create as a BFD section. Undo the mapping done | |
6110 | by copy_private_symbol_data. */ | |
6111 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6112 | switch (shndx) | |
6113 | { | |
6114 | case MAP_ONESYMTAB: | |
6115 | shndx = elf_onesymtab (abfd); | |
6116 | break; | |
6117 | case MAP_DYNSYMTAB: | |
6118 | shndx = elf_dynsymtab (abfd); | |
6119 | break; | |
6120 | case MAP_STRTAB: | |
6121 | shndx = elf_tdata (abfd)->strtab_section; | |
6122 | break; | |
6123 | case MAP_SHSTRTAB: | |
6124 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6125 | break; | |
9ad5cbcf AM |
6126 | case MAP_SYM_SHNDX: |
6127 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6128 | break; | |
079e9a2f AM |
6129 | default: |
6130 | break; | |
6131 | } | |
6132 | } | |
6133 | else | |
6134 | { | |
6135 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6136 | |
079e9a2f AM |
6137 | if (shndx == -1) |
6138 | { | |
6139 | asection *sec2; | |
6140 | ||
6141 | /* Writing this would be a hell of a lot easier if | |
6142 | we had some decent documentation on bfd, and | |
6143 | knew what to expect of the library, and what to | |
6144 | demand of applications. For example, it | |
6145 | appears that `objcopy' might not set the | |
6146 | section of a symbol to be a section that is | |
6147 | actually in the output file. */ | |
6148 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6149 | if (sec2 == NULL) |
6150 | { | |
6151 | _bfd_error_handler (_("\ | |
6152 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6153 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6154 | sec->name); | |
811072d8 | 6155 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6156 | _bfd_stringtab_free (stt); |
589e6347 NC |
6157 | return FALSE; |
6158 | } | |
811072d8 | 6159 | |
079e9a2f AM |
6160 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6161 | BFD_ASSERT (shndx != -1); | |
6162 | } | |
6163 | } | |
252b5132 | 6164 | |
079e9a2f AM |
6165 | sym.st_shndx = shndx; |
6166 | } | |
252b5132 | 6167 | |
13ae64f3 JJ |
6168 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6169 | type = STT_TLS; | |
6170 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6171 | type = STT_FUNC; |
6172 | else if ((flags & BSF_OBJECT) != 0) | |
6173 | type = STT_OBJECT; | |
d9352518 DB |
6174 | else if ((flags & BSF_RELC) != 0) |
6175 | type = STT_RELC; | |
6176 | else if ((flags & BSF_SRELC) != 0) | |
6177 | type = STT_SRELC; | |
079e9a2f AM |
6178 | else |
6179 | type = STT_NOTYPE; | |
252b5132 | 6180 | |
13ae64f3 JJ |
6181 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6182 | type = STT_TLS; | |
6183 | ||
589e6347 | 6184 | /* Processor-specific types. */ |
079e9a2f AM |
6185 | if (type_ptr != NULL |
6186 | && bed->elf_backend_get_symbol_type) | |
6187 | type = ((*bed->elf_backend_get_symbol_type) | |
6188 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6189 | |
079e9a2f AM |
6190 | if (flags & BSF_SECTION_SYM) |
6191 | { | |
6192 | if (flags & BSF_GLOBAL) | |
6193 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6194 | else | |
6195 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6196 | } | |
6197 | else if (bfd_is_com_section (syms[idx]->section)) | |
6198 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6199 | else if (bfd_is_und_section (syms[idx]->section)) | |
6200 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6201 | ? STB_WEAK | |
6202 | : STB_GLOBAL), | |
6203 | type); | |
6204 | else if (flags & BSF_FILE) | |
6205 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6206 | else | |
6207 | { | |
6208 | int bind = STB_LOCAL; | |
252b5132 | 6209 | |
079e9a2f AM |
6210 | if (flags & BSF_LOCAL) |
6211 | bind = STB_LOCAL; | |
6212 | else if (flags & BSF_WEAK) | |
6213 | bind = STB_WEAK; | |
6214 | else if (flags & BSF_GLOBAL) | |
6215 | bind = STB_GLOBAL; | |
252b5132 | 6216 | |
079e9a2f AM |
6217 | sym.st_info = ELF_ST_INFO (bind, type); |
6218 | } | |
252b5132 | 6219 | |
079e9a2f AM |
6220 | if (type_ptr != NULL) |
6221 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6222 | else | |
6223 | sym.st_other = 0; | |
252b5132 | 6224 | |
9ad5cbcf | 6225 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6226 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6227 | if (outbound_shndx != NULL) |
6228 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6229 | } |
252b5132 | 6230 | |
079e9a2f AM |
6231 | *sttp = stt; |
6232 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6233 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6234 | |
079e9a2f AM |
6235 | symstrtab_hdr->sh_flags = 0; |
6236 | symstrtab_hdr->sh_addr = 0; | |
6237 | symstrtab_hdr->sh_entsize = 0; | |
6238 | symstrtab_hdr->sh_link = 0; | |
6239 | symstrtab_hdr->sh_info = 0; | |
6240 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6241 | |
b34976b6 | 6242 | return TRUE; |
252b5132 RH |
6243 | } |
6244 | ||
6245 | /* Return the number of bytes required to hold the symtab vector. | |
6246 | ||
6247 | Note that we base it on the count plus 1, since we will null terminate | |
6248 | the vector allocated based on this size. However, the ELF symbol table | |
6249 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6250 | ||
6251 | long | |
217aa764 | 6252 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6253 | { |
6254 | long symcount; | |
6255 | long symtab_size; | |
6256 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6257 | ||
6258 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6259 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6260 | if (symcount > 0) | |
6261 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6262 | |
6263 | return symtab_size; | |
6264 | } | |
6265 | ||
6266 | long | |
217aa764 | 6267 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6268 | { |
6269 | long symcount; | |
6270 | long symtab_size; | |
6271 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6272 | ||
6273 | if (elf_dynsymtab (abfd) == 0) | |
6274 | { | |
6275 | bfd_set_error (bfd_error_invalid_operation); | |
6276 | return -1; | |
6277 | } | |
6278 | ||
6279 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6280 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6281 | if (symcount > 0) | |
6282 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6283 | |
6284 | return symtab_size; | |
6285 | } | |
6286 | ||
6287 | long | |
217aa764 AM |
6288 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6289 | sec_ptr asect) | |
252b5132 RH |
6290 | { |
6291 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6292 | } | |
6293 | ||
6294 | /* Canonicalize the relocs. */ | |
6295 | ||
6296 | long | |
217aa764 AM |
6297 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6298 | sec_ptr section, | |
6299 | arelent **relptr, | |
6300 | asymbol **symbols) | |
252b5132 RH |
6301 | { |
6302 | arelent *tblptr; | |
6303 | unsigned int i; | |
9c5bfbb7 | 6304 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6305 | |
b34976b6 | 6306 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6307 | return -1; |
6308 | ||
6309 | tblptr = section->relocation; | |
6310 | for (i = 0; i < section->reloc_count; i++) | |
6311 | *relptr++ = tblptr++; | |
6312 | ||
6313 | *relptr = NULL; | |
6314 | ||
6315 | return section->reloc_count; | |
6316 | } | |
6317 | ||
6318 | long | |
6cee3f79 | 6319 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6320 | { |
9c5bfbb7 | 6321 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6322 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6323 | |
6324 | if (symcount >= 0) | |
6325 | bfd_get_symcount (abfd) = symcount; | |
6326 | return symcount; | |
6327 | } | |
6328 | ||
6329 | long | |
217aa764 AM |
6330 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6331 | asymbol **allocation) | |
252b5132 | 6332 | { |
9c5bfbb7 | 6333 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6334 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6335 | |
6336 | if (symcount >= 0) | |
6337 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6338 | return symcount; | |
252b5132 RH |
6339 | } |
6340 | ||
8615f3f2 AM |
6341 | /* Return the size required for the dynamic reloc entries. Any loadable |
6342 | section that was actually installed in the BFD, and has type SHT_REL | |
6343 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6344 | dynamic reloc section. */ | |
252b5132 RH |
6345 | |
6346 | long | |
217aa764 | 6347 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6348 | { |
6349 | long ret; | |
6350 | asection *s; | |
6351 | ||
6352 | if (elf_dynsymtab (abfd) == 0) | |
6353 | { | |
6354 | bfd_set_error (bfd_error_invalid_operation); | |
6355 | return -1; | |
6356 | } | |
6357 | ||
6358 | ret = sizeof (arelent *); | |
6359 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6360 | if ((s->flags & SEC_LOAD) != 0 |
6361 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6362 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6363 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6364 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6365 | * sizeof (arelent *)); |
6366 | ||
6367 | return ret; | |
6368 | } | |
6369 | ||
8615f3f2 AM |
6370 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6371 | dynamic relocations as a single block, although they are actually | |
6372 | associated with particular sections; the interface, which was | |
6373 | designed for SunOS style shared libraries, expects that there is only | |
6374 | one set of dynamic relocs. Any loadable section that was actually | |
6375 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6376 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6377 | |
6378 | long | |
217aa764 AM |
6379 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6380 | arelent **storage, | |
6381 | asymbol **syms) | |
252b5132 | 6382 | { |
217aa764 | 6383 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6384 | asection *s; |
6385 | long ret; | |
6386 | ||
6387 | if (elf_dynsymtab (abfd) == 0) | |
6388 | { | |
6389 | bfd_set_error (bfd_error_invalid_operation); | |
6390 | return -1; | |
6391 | } | |
6392 | ||
6393 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6394 | ret = 0; | |
6395 | for (s = abfd->sections; s != NULL; s = s->next) | |
6396 | { | |
8615f3f2 AM |
6397 | if ((s->flags & SEC_LOAD) != 0 |
6398 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6399 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6400 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6401 | { | |
6402 | arelent *p; | |
6403 | long count, i; | |
6404 | ||
b34976b6 | 6405 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6406 | return -1; |
eea6121a | 6407 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6408 | p = s->relocation; |
6409 | for (i = 0; i < count; i++) | |
6410 | *storage++ = p++; | |
6411 | ret += count; | |
6412 | } | |
6413 | } | |
6414 | ||
6415 | *storage = NULL; | |
6416 | ||
6417 | return ret; | |
6418 | } | |
6419 | \f | |
6420 | /* Read in the version information. */ | |
6421 | ||
b34976b6 | 6422 | bfd_boolean |
fc0e6df6 | 6423 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6424 | { |
6425 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6426 | unsigned int freeidx = 0; |
6427 | ||
6428 | if (elf_dynverref (abfd) != 0) | |
6429 | { | |
6430 | Elf_Internal_Shdr *hdr; | |
6431 | Elf_External_Verneed *everneed; | |
6432 | Elf_Internal_Verneed *iverneed; | |
6433 | unsigned int i; | |
d0fb9a8d | 6434 | bfd_byte *contents_end; |
fc0e6df6 PB |
6435 | |
6436 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6437 | ||
d0fb9a8d JJ |
6438 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6439 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6440 | if (elf_tdata (abfd)->verref == NULL) |
6441 | goto error_return; | |
6442 | ||
6443 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6444 | ||
6445 | contents = bfd_malloc (hdr->sh_size); | |
6446 | if (contents == NULL) | |
d0fb9a8d JJ |
6447 | { |
6448 | error_return_verref: | |
6449 | elf_tdata (abfd)->verref = NULL; | |
6450 | elf_tdata (abfd)->cverrefs = 0; | |
6451 | goto error_return; | |
6452 | } | |
fc0e6df6 PB |
6453 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6454 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6455 | goto error_return_verref; |
fc0e6df6 | 6456 | |
d0fb9a8d JJ |
6457 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6458 | goto error_return_verref; | |
6459 | ||
6460 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6461 | == sizeof (Elf_External_Vernaux)); | |
6462 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6463 | everneed = (Elf_External_Verneed *) contents; |
6464 | iverneed = elf_tdata (abfd)->verref; | |
6465 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6466 | { | |
6467 | Elf_External_Vernaux *evernaux; | |
6468 | Elf_Internal_Vernaux *ivernaux; | |
6469 | unsigned int j; | |
6470 | ||
6471 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6472 | ||
6473 | iverneed->vn_bfd = abfd; | |
6474 | ||
6475 | iverneed->vn_filename = | |
6476 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6477 | iverneed->vn_file); | |
6478 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6479 | goto error_return_verref; |
fc0e6df6 | 6480 | |
d0fb9a8d JJ |
6481 | if (iverneed->vn_cnt == 0) |
6482 | iverneed->vn_auxptr = NULL; | |
6483 | else | |
6484 | { | |
6485 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6486 | sizeof (Elf_Internal_Vernaux)); | |
6487 | if (iverneed->vn_auxptr == NULL) | |
6488 | goto error_return_verref; | |
6489 | } | |
6490 | ||
6491 | if (iverneed->vn_aux | |
6492 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6493 | goto error_return_verref; | |
fc0e6df6 PB |
6494 | |
6495 | evernaux = ((Elf_External_Vernaux *) | |
6496 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6497 | ivernaux = iverneed->vn_auxptr; | |
6498 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6499 | { | |
6500 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6501 | ||
6502 | ivernaux->vna_nodename = | |
6503 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6504 | ivernaux->vna_name); | |
6505 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6506 | goto error_return_verref; |
fc0e6df6 PB |
6507 | |
6508 | if (j + 1 < iverneed->vn_cnt) | |
6509 | ivernaux->vna_nextptr = ivernaux + 1; | |
6510 | else | |
6511 | ivernaux->vna_nextptr = NULL; | |
6512 | ||
d0fb9a8d JJ |
6513 | if (ivernaux->vna_next |
6514 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6515 | goto error_return_verref; | |
6516 | ||
fc0e6df6 PB |
6517 | evernaux = ((Elf_External_Vernaux *) |
6518 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6519 | ||
6520 | if (ivernaux->vna_other > freeidx) | |
6521 | freeidx = ivernaux->vna_other; | |
6522 | } | |
6523 | ||
6524 | if (i + 1 < hdr->sh_info) | |
6525 | iverneed->vn_nextref = iverneed + 1; | |
6526 | else | |
6527 | iverneed->vn_nextref = NULL; | |
6528 | ||
d0fb9a8d JJ |
6529 | if (iverneed->vn_next |
6530 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6531 | goto error_return_verref; | |
6532 | ||
fc0e6df6 PB |
6533 | everneed = ((Elf_External_Verneed *) |
6534 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6535 | } | |
6536 | ||
6537 | free (contents); | |
6538 | contents = NULL; | |
6539 | } | |
252b5132 RH |
6540 | |
6541 | if (elf_dynverdef (abfd) != 0) | |
6542 | { | |
6543 | Elf_Internal_Shdr *hdr; | |
6544 | Elf_External_Verdef *everdef; | |
6545 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6546 | Elf_Internal_Verdef *iverdefarr; |
6547 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6548 | unsigned int i; |
062e2358 | 6549 | unsigned int maxidx; |
d0fb9a8d | 6550 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6551 | |
6552 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6553 | ||
217aa764 | 6554 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6555 | if (contents == NULL) |
6556 | goto error_return; | |
6557 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6558 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6559 | goto error_return; |
6560 | ||
d0fb9a8d JJ |
6561 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6562 | goto error_return; | |
6563 | ||
6564 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6565 | >= sizeof (Elf_External_Verdaux)); | |
6566 | contents_end_def = contents + hdr->sh_size | |
6567 | - sizeof (Elf_External_Verdef); | |
6568 | contents_end_aux = contents + hdr->sh_size | |
6569 | - sizeof (Elf_External_Verdaux); | |
6570 | ||
f631889e UD |
6571 | /* We know the number of entries in the section but not the maximum |
6572 | index. Therefore we have to run through all entries and find | |
6573 | the maximum. */ | |
252b5132 | 6574 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6575 | maxidx = 0; |
6576 | for (i = 0; i < hdr->sh_info; ++i) | |
6577 | { | |
6578 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6579 | ||
062e2358 AM |
6580 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6581 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6582 | |
d0fb9a8d JJ |
6583 | if (iverdefmem.vd_next |
6584 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6585 | goto error_return; | |
6586 | ||
f631889e UD |
6587 | everdef = ((Elf_External_Verdef *) |
6588 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6589 | } | |
6590 | ||
fc0e6df6 PB |
6591 | if (default_imported_symver) |
6592 | { | |
6593 | if (freeidx > maxidx) | |
6594 | maxidx = ++freeidx; | |
6595 | else | |
6596 | freeidx = ++maxidx; | |
6597 | } | |
d0fb9a8d JJ |
6598 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6599 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6600 | if (elf_tdata (abfd)->verdef == NULL) |
6601 | goto error_return; | |
6602 | ||
6603 | elf_tdata (abfd)->cverdefs = maxidx; | |
6604 | ||
6605 | everdef = (Elf_External_Verdef *) contents; | |
6606 | iverdefarr = elf_tdata (abfd)->verdef; | |
6607 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6608 | { |
6609 | Elf_External_Verdaux *everdaux; | |
6610 | Elf_Internal_Verdaux *iverdaux; | |
6611 | unsigned int j; | |
6612 | ||
f631889e UD |
6613 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6614 | ||
d0fb9a8d JJ |
6615 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6616 | { | |
6617 | error_return_verdef: | |
6618 | elf_tdata (abfd)->verdef = NULL; | |
6619 | elf_tdata (abfd)->cverdefs = 0; | |
6620 | goto error_return; | |
6621 | } | |
6622 | ||
f631889e UD |
6623 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6624 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6625 | |
6626 | iverdef->vd_bfd = abfd; | |
6627 | ||
d0fb9a8d JJ |
6628 | if (iverdef->vd_cnt == 0) |
6629 | iverdef->vd_auxptr = NULL; | |
6630 | else | |
6631 | { | |
6632 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6633 | sizeof (Elf_Internal_Verdaux)); | |
6634 | if (iverdef->vd_auxptr == NULL) | |
6635 | goto error_return_verdef; | |
6636 | } | |
6637 | ||
6638 | if (iverdef->vd_aux | |
6639 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6640 | goto error_return_verdef; | |
252b5132 RH |
6641 | |
6642 | everdaux = ((Elf_External_Verdaux *) | |
6643 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6644 | iverdaux = iverdef->vd_auxptr; | |
6645 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6646 | { | |
6647 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6648 | ||
6649 | iverdaux->vda_nodename = | |
6650 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6651 | iverdaux->vda_name); | |
6652 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6653 | goto error_return_verdef; |
252b5132 RH |
6654 | |
6655 | if (j + 1 < iverdef->vd_cnt) | |
6656 | iverdaux->vda_nextptr = iverdaux + 1; | |
6657 | else | |
6658 | iverdaux->vda_nextptr = NULL; | |
6659 | ||
d0fb9a8d JJ |
6660 | if (iverdaux->vda_next |
6661 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6662 | goto error_return_verdef; | |
6663 | ||
252b5132 RH |
6664 | everdaux = ((Elf_External_Verdaux *) |
6665 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6666 | } | |
6667 | ||
d0fb9a8d JJ |
6668 | if (iverdef->vd_cnt) |
6669 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6670 | |
d0fb9a8d | 6671 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6672 | iverdef->vd_nextdef = iverdef + 1; |
6673 | else | |
6674 | iverdef->vd_nextdef = NULL; | |
6675 | ||
6676 | everdef = ((Elf_External_Verdef *) | |
6677 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6678 | } | |
6679 | ||
6680 | free (contents); | |
6681 | contents = NULL; | |
6682 | } | |
fc0e6df6 | 6683 | else if (default_imported_symver) |
252b5132 | 6684 | { |
fc0e6df6 PB |
6685 | if (freeidx < 3) |
6686 | freeidx = 3; | |
6687 | else | |
6688 | freeidx++; | |
252b5132 | 6689 | |
d0fb9a8d JJ |
6690 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6691 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6692 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6693 | goto error_return; |
6694 | ||
fc0e6df6 PB |
6695 | elf_tdata (abfd)->cverdefs = freeidx; |
6696 | } | |
252b5132 | 6697 | |
fc0e6df6 PB |
6698 | /* Create a default version based on the soname. */ |
6699 | if (default_imported_symver) | |
6700 | { | |
6701 | Elf_Internal_Verdef *iverdef; | |
6702 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6703 | |
fc0e6df6 | 6704 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6705 | |
fc0e6df6 PB |
6706 | iverdef->vd_version = VER_DEF_CURRENT; |
6707 | iverdef->vd_flags = 0; | |
6708 | iverdef->vd_ndx = freeidx; | |
6709 | iverdef->vd_cnt = 1; | |
252b5132 | 6710 | |
fc0e6df6 | 6711 | iverdef->vd_bfd = abfd; |
252b5132 | 6712 | |
fc0e6df6 PB |
6713 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6714 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6715 | goto error_return_verdef; |
fc0e6df6 | 6716 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6717 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6718 | if (iverdef->vd_auxptr == NULL) | |
6719 | goto error_return_verdef; | |
252b5132 | 6720 | |
fc0e6df6 PB |
6721 | iverdaux = iverdef->vd_auxptr; |
6722 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6723 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6724 | } |
6725 | ||
b34976b6 | 6726 | return TRUE; |
252b5132 RH |
6727 | |
6728 | error_return: | |
5ed6aba4 | 6729 | if (contents != NULL) |
252b5132 | 6730 | free (contents); |
b34976b6 | 6731 | return FALSE; |
252b5132 RH |
6732 | } |
6733 | \f | |
6734 | asymbol * | |
217aa764 | 6735 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6736 | { |
6737 | elf_symbol_type *newsym; | |
dc810e39 | 6738 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6739 | |
217aa764 | 6740 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6741 | if (!newsym) |
6742 | return NULL; | |
6743 | else | |
6744 | { | |
6745 | newsym->symbol.the_bfd = abfd; | |
6746 | return &newsym->symbol; | |
6747 | } | |
6748 | } | |
6749 | ||
6750 | void | |
217aa764 AM |
6751 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6752 | asymbol *symbol, | |
6753 | symbol_info *ret) | |
252b5132 RH |
6754 | { |
6755 | bfd_symbol_info (symbol, ret); | |
6756 | } | |
6757 | ||
6758 | /* Return whether a symbol name implies a local symbol. Most targets | |
6759 | use this function for the is_local_label_name entry point, but some | |
6760 | override it. */ | |
6761 | ||
b34976b6 | 6762 | bfd_boolean |
217aa764 AM |
6763 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6764 | const char *name) | |
252b5132 RH |
6765 | { |
6766 | /* Normal local symbols start with ``.L''. */ | |
6767 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6768 | return TRUE; |
252b5132 RH |
6769 | |
6770 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6771 | DWARF debugging symbols starting with ``..''. */ | |
6772 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6773 | return TRUE; |
252b5132 RH |
6774 | |
6775 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6776 | emitting DWARF debugging output. I suspect this is actually a | |
6777 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6778 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6779 | underscore to be emitted on some ELF targets). For ease of use, | |
6780 | we treat such symbols as local. */ | |
6781 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6782 | return TRUE; |
252b5132 | 6783 | |
b34976b6 | 6784 | return FALSE; |
252b5132 RH |
6785 | } |
6786 | ||
6787 | alent * | |
217aa764 AM |
6788 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6789 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6790 | { |
6791 | abort (); | |
6792 | return NULL; | |
6793 | } | |
6794 | ||
b34976b6 | 6795 | bfd_boolean |
217aa764 AM |
6796 | _bfd_elf_set_arch_mach (bfd *abfd, |
6797 | enum bfd_architecture arch, | |
6798 | unsigned long machine) | |
252b5132 RH |
6799 | { |
6800 | /* If this isn't the right architecture for this backend, and this | |
6801 | isn't the generic backend, fail. */ | |
6802 | if (arch != get_elf_backend_data (abfd)->arch | |
6803 | && arch != bfd_arch_unknown | |
6804 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6805 | return FALSE; |
252b5132 RH |
6806 | |
6807 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6808 | } | |
6809 | ||
d1fad7c6 NC |
6810 | /* Find the function to a particular section and offset, |
6811 | for error reporting. */ | |
252b5132 | 6812 | |
b34976b6 | 6813 | static bfd_boolean |
217aa764 AM |
6814 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6815 | asection *section, | |
6816 | asymbol **symbols, | |
6817 | bfd_vma offset, | |
6818 | const char **filename_ptr, | |
6819 | const char **functionname_ptr) | |
252b5132 | 6820 | { |
252b5132 | 6821 | const char *filename; |
57426232 | 6822 | asymbol *func, *file; |
252b5132 RH |
6823 | bfd_vma low_func; |
6824 | asymbol **p; | |
57426232 JB |
6825 | /* ??? Given multiple file symbols, it is impossible to reliably |
6826 | choose the right file name for global symbols. File symbols are | |
6827 | local symbols, and thus all file symbols must sort before any | |
6828 | global symbols. The ELF spec may be interpreted to say that a | |
6829 | file symbol must sort before other local symbols, but currently | |
6830 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6831 | make a better choice of file name for local symbols by ignoring | |
6832 | file symbols appearing after a given local symbol. */ | |
6833 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6834 | |
252b5132 RH |
6835 | filename = NULL; |
6836 | func = NULL; | |
57426232 | 6837 | file = NULL; |
252b5132 | 6838 | low_func = 0; |
57426232 | 6839 | state = nothing_seen; |
252b5132 RH |
6840 | |
6841 | for (p = symbols; *p != NULL; p++) | |
6842 | { | |
6843 | elf_symbol_type *q; | |
6844 | ||
6845 | q = (elf_symbol_type *) *p; | |
6846 | ||
252b5132 RH |
6847 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6848 | { | |
6849 | default: | |
6850 | break; | |
6851 | case STT_FILE: | |
57426232 JB |
6852 | file = &q->symbol; |
6853 | if (state == symbol_seen) | |
6854 | state = file_after_symbol_seen; | |
6855 | continue; | |
252b5132 RH |
6856 | case STT_NOTYPE: |
6857 | case STT_FUNC: | |
6b40fcba | 6858 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6859 | && q->symbol.value >= low_func |
6860 | && q->symbol.value <= offset) | |
6861 | { | |
6862 | func = (asymbol *) q; | |
6863 | low_func = q->symbol.value; | |
a1923858 AM |
6864 | filename = NULL; |
6865 | if (file != NULL | |
6866 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
6867 | || state != file_after_symbol_seen)) | |
57426232 | 6868 | filename = bfd_asymbol_name (file); |
252b5132 RH |
6869 | } |
6870 | break; | |
6871 | } | |
57426232 JB |
6872 | if (state == nothing_seen) |
6873 | state = symbol_seen; | |
252b5132 RH |
6874 | } |
6875 | ||
6876 | if (func == NULL) | |
b34976b6 | 6877 | return FALSE; |
252b5132 | 6878 | |
d1fad7c6 NC |
6879 | if (filename_ptr) |
6880 | *filename_ptr = filename; | |
6881 | if (functionname_ptr) | |
6882 | *functionname_ptr = bfd_asymbol_name (func); | |
6883 | ||
b34976b6 | 6884 | return TRUE; |
d1fad7c6 NC |
6885 | } |
6886 | ||
6887 | /* Find the nearest line to a particular section and offset, | |
6888 | for error reporting. */ | |
6889 | ||
b34976b6 | 6890 | bfd_boolean |
217aa764 AM |
6891 | _bfd_elf_find_nearest_line (bfd *abfd, |
6892 | asection *section, | |
6893 | asymbol **symbols, | |
6894 | bfd_vma offset, | |
6895 | const char **filename_ptr, | |
6896 | const char **functionname_ptr, | |
6897 | unsigned int *line_ptr) | |
d1fad7c6 | 6898 | { |
b34976b6 | 6899 | bfd_boolean found; |
d1fad7c6 NC |
6900 | |
6901 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6902 | filename_ptr, functionname_ptr, |
6903 | line_ptr)) | |
d1fad7c6 NC |
6904 | { |
6905 | if (!*functionname_ptr) | |
4e8a9624 AM |
6906 | elf_find_function (abfd, section, symbols, offset, |
6907 | *filename_ptr ? NULL : filename_ptr, | |
6908 | functionname_ptr); | |
6909 | ||
b34976b6 | 6910 | return TRUE; |
d1fad7c6 NC |
6911 | } |
6912 | ||
6913 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6914 | filename_ptr, functionname_ptr, |
6915 | line_ptr, 0, | |
6916 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6917 | { |
6918 | if (!*functionname_ptr) | |
4e8a9624 AM |
6919 | elf_find_function (abfd, section, symbols, offset, |
6920 | *filename_ptr ? NULL : filename_ptr, | |
6921 | functionname_ptr); | |
6922 | ||
b34976b6 | 6923 | return TRUE; |
d1fad7c6 NC |
6924 | } |
6925 | ||
6926 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6927 | &found, filename_ptr, |
6928 | functionname_ptr, line_ptr, | |
6929 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6930 | return FALSE; |
dc43ada5 | 6931 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6932 | return TRUE; |
d1fad7c6 NC |
6933 | |
6934 | if (symbols == NULL) | |
b34976b6 | 6935 | return FALSE; |
d1fad7c6 NC |
6936 | |
6937 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6938 | filename_ptr, functionname_ptr)) |
b34976b6 | 6939 | return FALSE; |
d1fad7c6 | 6940 | |
252b5132 | 6941 | *line_ptr = 0; |
b34976b6 | 6942 | return TRUE; |
252b5132 RH |
6943 | } |
6944 | ||
5420f73d L |
6945 | /* Find the line for a symbol. */ |
6946 | ||
6947 | bfd_boolean | |
6948 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
6949 | const char **filename_ptr, unsigned int *line_ptr) | |
6950 | { | |
6951 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
6952 | filename_ptr, line_ptr, 0, | |
6953 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
6954 | } | |
6955 | ||
4ab527b0 FF |
6956 | /* After a call to bfd_find_nearest_line, successive calls to |
6957 | bfd_find_inliner_info can be used to get source information about | |
6958 | each level of function inlining that terminated at the address | |
6959 | passed to bfd_find_nearest_line. Currently this is only supported | |
6960 | for DWARF2 with appropriate DWARF3 extensions. */ | |
6961 | ||
6962 | bfd_boolean | |
6963 | _bfd_elf_find_inliner_info (bfd *abfd, | |
6964 | const char **filename_ptr, | |
6965 | const char **functionname_ptr, | |
6966 | unsigned int *line_ptr) | |
6967 | { | |
6968 | bfd_boolean found; | |
6969 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
6970 | functionname_ptr, line_ptr, | |
6971 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
6972 | return found; | |
6973 | } | |
6974 | ||
252b5132 | 6975 | int |
a6b96beb | 6976 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 6977 | { |
8ded5a0f AM |
6978 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
6979 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 6980 | |
a6b96beb | 6981 | if (!info->relocatable) |
8ded5a0f | 6982 | { |
62d7a5f6 | 6983 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 6984 | |
62d7a5f6 AM |
6985 | if (phdr_size == (bfd_size_type) -1) |
6986 | { | |
6987 | struct elf_segment_map *m; | |
6988 | ||
6989 | phdr_size = 0; | |
6990 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
6991 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 6992 | |
62d7a5f6 AM |
6993 | if (phdr_size == 0) |
6994 | phdr_size = get_program_header_size (abfd, info); | |
6995 | } | |
8ded5a0f AM |
6996 | |
6997 | elf_tdata (abfd)->program_header_size = phdr_size; | |
6998 | ret += phdr_size; | |
6999 | } | |
7000 | ||
252b5132 RH |
7001 | return ret; |
7002 | } | |
7003 | ||
b34976b6 | 7004 | bfd_boolean |
217aa764 AM |
7005 | _bfd_elf_set_section_contents (bfd *abfd, |
7006 | sec_ptr section, | |
0f867abe | 7007 | const void *location, |
217aa764 AM |
7008 | file_ptr offset, |
7009 | bfd_size_type count) | |
252b5132 RH |
7010 | { |
7011 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7012 | bfd_signed_vma pos; |
252b5132 RH |
7013 | |
7014 | if (! abfd->output_has_begun | |
217aa764 | 7015 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7016 | return FALSE; |
252b5132 RH |
7017 | |
7018 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7019 | pos = hdr->sh_offset + offset; |
7020 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7021 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7022 | return FALSE; |
252b5132 | 7023 | |
b34976b6 | 7024 | return TRUE; |
252b5132 RH |
7025 | } |
7026 | ||
7027 | void | |
217aa764 AM |
7028 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7029 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7030 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7031 | { |
7032 | abort (); | |
7033 | } | |
7034 | ||
252b5132 RH |
7035 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7036 | ||
b34976b6 | 7037 | bfd_boolean |
217aa764 | 7038 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7039 | { |
c044fabd | 7040 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7041 | |
7042 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7043 | { | |
7044 | bfd_reloc_code_real_type code; | |
7045 | reloc_howto_type *howto; | |
7046 | ||
7047 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7048 | equivalent ELF reloc. */ |
252b5132 RH |
7049 | |
7050 | if (areloc->howto->pc_relative) | |
7051 | { | |
7052 | switch (areloc->howto->bitsize) | |
7053 | { | |
7054 | case 8: | |
7055 | code = BFD_RELOC_8_PCREL; | |
7056 | break; | |
7057 | case 12: | |
7058 | code = BFD_RELOC_12_PCREL; | |
7059 | break; | |
7060 | case 16: | |
7061 | code = BFD_RELOC_16_PCREL; | |
7062 | break; | |
7063 | case 24: | |
7064 | code = BFD_RELOC_24_PCREL; | |
7065 | break; | |
7066 | case 32: | |
7067 | code = BFD_RELOC_32_PCREL; | |
7068 | break; | |
7069 | case 64: | |
7070 | code = BFD_RELOC_64_PCREL; | |
7071 | break; | |
7072 | default: | |
7073 | goto fail; | |
7074 | } | |
7075 | ||
7076 | howto = bfd_reloc_type_lookup (abfd, code); | |
7077 | ||
7078 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7079 | { | |
7080 | if (howto->pcrel_offset) | |
7081 | areloc->addend += areloc->address; | |
7082 | else | |
7083 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7084 | } | |
7085 | } | |
7086 | else | |
7087 | { | |
7088 | switch (areloc->howto->bitsize) | |
7089 | { | |
7090 | case 8: | |
7091 | code = BFD_RELOC_8; | |
7092 | break; | |
7093 | case 14: | |
7094 | code = BFD_RELOC_14; | |
7095 | break; | |
7096 | case 16: | |
7097 | code = BFD_RELOC_16; | |
7098 | break; | |
7099 | case 26: | |
7100 | code = BFD_RELOC_26; | |
7101 | break; | |
7102 | case 32: | |
7103 | code = BFD_RELOC_32; | |
7104 | break; | |
7105 | case 64: | |
7106 | code = BFD_RELOC_64; | |
7107 | break; | |
7108 | default: | |
7109 | goto fail; | |
7110 | } | |
7111 | ||
7112 | howto = bfd_reloc_type_lookup (abfd, code); | |
7113 | } | |
7114 | ||
7115 | if (howto) | |
7116 | areloc->howto = howto; | |
7117 | else | |
7118 | goto fail; | |
7119 | } | |
7120 | ||
b34976b6 | 7121 | return TRUE; |
252b5132 RH |
7122 | |
7123 | fail: | |
7124 | (*_bfd_error_handler) | |
d003868e AM |
7125 | (_("%B: unsupported relocation type %s"), |
7126 | abfd, areloc->howto->name); | |
252b5132 | 7127 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7128 | return FALSE; |
252b5132 RH |
7129 | } |
7130 | ||
b34976b6 | 7131 | bfd_boolean |
217aa764 | 7132 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7133 | { |
7134 | if (bfd_get_format (abfd) == bfd_object) | |
7135 | { | |
b25e3d87 | 7136 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7137 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7138 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7139 | } |
7140 | ||
7141 | return _bfd_generic_close_and_cleanup (abfd); | |
7142 | } | |
7143 | ||
7144 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7145 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7146 | range-checking to interfere. There is nothing else to do in processing | |
7147 | this reloc. */ | |
7148 | ||
7149 | bfd_reloc_status_type | |
217aa764 AM |
7150 | _bfd_elf_rel_vtable_reloc_fn |
7151 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7152 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7153 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7154 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7155 | { |
7156 | return bfd_reloc_ok; | |
7157 | } | |
252b5132 RH |
7158 | \f |
7159 | /* Elf core file support. Much of this only works on native | |
7160 | toolchains, since we rely on knowing the | |
7161 | machine-dependent procfs structure in order to pick | |
c044fabd | 7162 | out details about the corefile. */ |
252b5132 RH |
7163 | |
7164 | #ifdef HAVE_SYS_PROCFS_H | |
7165 | # include <sys/procfs.h> | |
7166 | #endif | |
7167 | ||
c044fabd | 7168 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7169 | |
7170 | static int | |
217aa764 | 7171 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7172 | { |
7173 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7174 | + (elf_tdata (abfd)->core_pid)); | |
7175 | } | |
7176 | ||
252b5132 RH |
7177 | /* If there isn't a section called NAME, make one, using |
7178 | data from SECT. Note, this function will generate a | |
7179 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7180 | overwrite it. */ |
252b5132 | 7181 | |
b34976b6 | 7182 | static bfd_boolean |
217aa764 | 7183 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7184 | { |
c044fabd | 7185 | asection *sect2; |
252b5132 RH |
7186 | |
7187 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7188 | return TRUE; |
252b5132 | 7189 | |
117ed4f8 | 7190 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7191 | if (sect2 == NULL) |
b34976b6 | 7192 | return FALSE; |
252b5132 | 7193 | |
eea6121a | 7194 | sect2->size = sect->size; |
252b5132 | 7195 | sect2->filepos = sect->filepos; |
252b5132 | 7196 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7197 | return TRUE; |
252b5132 RH |
7198 | } |
7199 | ||
bb0082d6 AM |
7200 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7201 | actually creates up to two pseudosections: | |
7202 | - For the single-threaded case, a section named NAME, unless | |
7203 | such a section already exists. | |
7204 | - For the multi-threaded case, a section named "NAME/PID", where | |
7205 | PID is elfcore_make_pid (abfd). | |
7206 | Both pseudosections have identical contents. */ | |
b34976b6 | 7207 | bfd_boolean |
217aa764 AM |
7208 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7209 | char *name, | |
7210 | size_t size, | |
7211 | ufile_ptr filepos) | |
bb0082d6 AM |
7212 | { |
7213 | char buf[100]; | |
7214 | char *threaded_name; | |
d4c88bbb | 7215 | size_t len; |
bb0082d6 AM |
7216 | asection *sect; |
7217 | ||
7218 | /* Build the section name. */ | |
7219 | ||
7220 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7221 | len = strlen (buf) + 1; |
217aa764 | 7222 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7223 | if (threaded_name == NULL) |
b34976b6 | 7224 | return FALSE; |
d4c88bbb | 7225 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7226 | |
117ed4f8 AM |
7227 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7228 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7229 | if (sect == NULL) |
b34976b6 | 7230 | return FALSE; |
eea6121a | 7231 | sect->size = size; |
bb0082d6 | 7232 | sect->filepos = filepos; |
bb0082d6 AM |
7233 | sect->alignment_power = 2; |
7234 | ||
936e320b | 7235 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7236 | } |
7237 | ||
252b5132 | 7238 | /* prstatus_t exists on: |
4a938328 | 7239 | solaris 2.5+ |
252b5132 RH |
7240 | linux 2.[01] + glibc |
7241 | unixware 4.2 | |
7242 | */ | |
7243 | ||
7244 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7245 | |
b34976b6 | 7246 | static bfd_boolean |
217aa764 | 7247 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7248 | { |
eea6121a | 7249 | size_t size; |
7ee38065 | 7250 | int offset; |
252b5132 | 7251 | |
4a938328 MS |
7252 | if (note->descsz == sizeof (prstatus_t)) |
7253 | { | |
7254 | prstatus_t prstat; | |
252b5132 | 7255 | |
eea6121a | 7256 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7257 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7258 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7259 | |
fa49d224 NC |
7260 | /* Do not overwrite the core signal if it |
7261 | has already been set by another thread. */ | |
7262 | if (elf_tdata (abfd)->core_signal == 0) | |
7263 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7264 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7265 | |
4a938328 MS |
7266 | /* pr_who exists on: |
7267 | solaris 2.5+ | |
7268 | unixware 4.2 | |
7269 | pr_who doesn't exist on: | |
7270 | linux 2.[01] | |
7271 | */ | |
252b5132 | 7272 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7273 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7274 | #endif |
4a938328 | 7275 | } |
7ee38065 | 7276 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7277 | else if (note->descsz == sizeof (prstatus32_t)) |
7278 | { | |
7279 | /* 64-bit host, 32-bit corefile */ | |
7280 | prstatus32_t prstat; | |
7281 | ||
eea6121a | 7282 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7283 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7284 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7285 | ||
fa49d224 NC |
7286 | /* Do not overwrite the core signal if it |
7287 | has already been set by another thread. */ | |
7288 | if (elf_tdata (abfd)->core_signal == 0) | |
7289 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7290 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7291 | ||
7292 | /* pr_who exists on: | |
7293 | solaris 2.5+ | |
7294 | unixware 4.2 | |
7295 | pr_who doesn't exist on: | |
7296 | linux 2.[01] | |
7297 | */ | |
7ee38065 | 7298 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7299 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7300 | #endif | |
7301 | } | |
7ee38065 | 7302 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7303 | else |
7304 | { | |
7305 | /* Fail - we don't know how to handle any other | |
7306 | note size (ie. data object type). */ | |
b34976b6 | 7307 | return TRUE; |
4a938328 | 7308 | } |
252b5132 | 7309 | |
bb0082d6 | 7310 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7311 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7312 | size, note->descpos + offset); |
252b5132 RH |
7313 | } |
7314 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7315 | ||
bb0082d6 | 7316 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7317 | static bfd_boolean |
217aa764 AM |
7318 | elfcore_make_note_pseudosection (bfd *abfd, |
7319 | char *name, | |
7320 | Elf_Internal_Note *note) | |
252b5132 | 7321 | { |
936e320b AM |
7322 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7323 | note->descsz, note->descpos); | |
252b5132 RH |
7324 | } |
7325 | ||
ff08c6bb JB |
7326 | /* There isn't a consistent prfpregset_t across platforms, |
7327 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7328 | data structure apart. */ |
7329 | ||
b34976b6 | 7330 | static bfd_boolean |
217aa764 | 7331 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7332 | { |
7333 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7334 | } | |
7335 | ||
ff08c6bb JB |
7336 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7337 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7338 | literally. */ | |
c044fabd | 7339 | |
b34976b6 | 7340 | static bfd_boolean |
217aa764 | 7341 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7342 | { |
7343 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7344 | } | |
7345 | ||
252b5132 | 7346 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7347 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7348 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7349 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7350 | #endif | |
252b5132 RH |
7351 | #endif |
7352 | ||
7353 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7354 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7355 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7356 | typedef psinfo32_t elfcore_psinfo32_t; |
7357 | #endif | |
252b5132 RH |
7358 | #endif |
7359 | ||
252b5132 RH |
7360 | /* return a malloc'ed copy of a string at START which is at |
7361 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7362 | the copy will always have a terminating '\0'. */ |
252b5132 | 7363 | |
936e320b | 7364 | char * |
217aa764 | 7365 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7366 | { |
dc810e39 | 7367 | char *dups; |
c044fabd | 7368 | char *end = memchr (start, '\0', max); |
dc810e39 | 7369 | size_t len; |
252b5132 RH |
7370 | |
7371 | if (end == NULL) | |
7372 | len = max; | |
7373 | else | |
7374 | len = end - start; | |
7375 | ||
217aa764 | 7376 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7377 | if (dups == NULL) |
252b5132 RH |
7378 | return NULL; |
7379 | ||
dc810e39 AM |
7380 | memcpy (dups, start, len); |
7381 | dups[len] = '\0'; | |
252b5132 | 7382 | |
dc810e39 | 7383 | return dups; |
252b5132 RH |
7384 | } |
7385 | ||
bb0082d6 | 7386 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7387 | static bfd_boolean |
217aa764 | 7388 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7389 | { |
4a938328 MS |
7390 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7391 | { | |
7392 | elfcore_psinfo_t psinfo; | |
252b5132 | 7393 | |
7ee38065 | 7394 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7395 | |
4a938328 | 7396 | elf_tdata (abfd)->core_program |
936e320b AM |
7397 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7398 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7399 | |
4a938328 | 7400 | elf_tdata (abfd)->core_command |
936e320b AM |
7401 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7402 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7403 | } |
7ee38065 | 7404 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7405 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7406 | { | |
7407 | /* 64-bit host, 32-bit corefile */ | |
7408 | elfcore_psinfo32_t psinfo; | |
7409 | ||
7ee38065 | 7410 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7411 | |
4a938328 | 7412 | elf_tdata (abfd)->core_program |
936e320b AM |
7413 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7414 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7415 | |
7416 | elf_tdata (abfd)->core_command | |
936e320b AM |
7417 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7418 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7419 | } |
7420 | #endif | |
7421 | ||
7422 | else | |
7423 | { | |
7424 | /* Fail - we don't know how to handle any other | |
7425 | note size (ie. data object type). */ | |
b34976b6 | 7426 | return TRUE; |
4a938328 | 7427 | } |
252b5132 RH |
7428 | |
7429 | /* Note that for some reason, a spurious space is tacked | |
7430 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7431 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7432 | |
7433 | { | |
c044fabd | 7434 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7435 | int n = strlen (command); |
7436 | ||
7437 | if (0 < n && command[n - 1] == ' ') | |
7438 | command[n - 1] = '\0'; | |
7439 | } | |
7440 | ||
b34976b6 | 7441 | return TRUE; |
252b5132 RH |
7442 | } |
7443 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7444 | ||
252b5132 | 7445 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7446 | static bfd_boolean |
217aa764 | 7447 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7448 | { |
f572a39d AM |
7449 | if (note->descsz == sizeof (pstatus_t) |
7450 | #if defined (HAVE_PXSTATUS_T) | |
7451 | || note->descsz == sizeof (pxstatus_t) | |
7452 | #endif | |
7453 | ) | |
4a938328 MS |
7454 | { |
7455 | pstatus_t pstat; | |
252b5132 | 7456 | |
4a938328 | 7457 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7458 | |
4a938328 MS |
7459 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7460 | } | |
7ee38065 | 7461 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7462 | else if (note->descsz == sizeof (pstatus32_t)) |
7463 | { | |
7464 | /* 64-bit host, 32-bit corefile */ | |
7465 | pstatus32_t pstat; | |
252b5132 | 7466 | |
4a938328 | 7467 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7468 | |
4a938328 MS |
7469 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7470 | } | |
7471 | #endif | |
252b5132 RH |
7472 | /* Could grab some more details from the "representative" |
7473 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7474 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7475 | |
b34976b6 | 7476 | return TRUE; |
252b5132 RH |
7477 | } |
7478 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7479 | ||
252b5132 | 7480 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7481 | static bfd_boolean |
217aa764 | 7482 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7483 | { |
7484 | lwpstatus_t lwpstat; | |
7485 | char buf[100]; | |
c044fabd | 7486 | char *name; |
d4c88bbb | 7487 | size_t len; |
c044fabd | 7488 | asection *sect; |
252b5132 | 7489 | |
f572a39d AM |
7490 | if (note->descsz != sizeof (lwpstat) |
7491 | #if defined (HAVE_LWPXSTATUS_T) | |
7492 | && note->descsz != sizeof (lwpxstatus_t) | |
7493 | #endif | |
7494 | ) | |
b34976b6 | 7495 | return TRUE; |
252b5132 RH |
7496 | |
7497 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7498 | ||
7499 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7500 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7501 | ||
c044fabd | 7502 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7503 | |
7504 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7505 | len = strlen (buf) + 1; |
217aa764 | 7506 | name = bfd_alloc (abfd, len); |
252b5132 | 7507 | if (name == NULL) |
b34976b6 | 7508 | return FALSE; |
d4c88bbb | 7509 | memcpy (name, buf, len); |
252b5132 | 7510 | |
117ed4f8 | 7511 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7512 | if (sect == NULL) |
b34976b6 | 7513 | return FALSE; |
252b5132 RH |
7514 | |
7515 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7516 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7517 | sect->filepos = note->descpos |
7518 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7519 | #endif | |
7520 | ||
7521 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7522 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7523 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7524 | #endif | |
7525 | ||
252b5132 RH |
7526 | sect->alignment_power = 2; |
7527 | ||
7528 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7529 | return FALSE; |
252b5132 RH |
7530 | |
7531 | /* Make a ".reg2/999" section */ | |
7532 | ||
7533 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7534 | len = strlen (buf) + 1; |
217aa764 | 7535 | name = bfd_alloc (abfd, len); |
252b5132 | 7536 | if (name == NULL) |
b34976b6 | 7537 | return FALSE; |
d4c88bbb | 7538 | memcpy (name, buf, len); |
252b5132 | 7539 | |
117ed4f8 | 7540 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7541 | if (sect == NULL) |
b34976b6 | 7542 | return FALSE; |
252b5132 RH |
7543 | |
7544 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7545 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7546 | sect->filepos = note->descpos |
7547 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7548 | #endif | |
7549 | ||
7550 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7551 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7552 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7553 | #endif | |
7554 | ||
252b5132 RH |
7555 | sect->alignment_power = 2; |
7556 | ||
936e320b | 7557 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7558 | } |
7559 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7560 | ||
16e9c715 | 7561 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7562 | static bfd_boolean |
217aa764 | 7563 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7564 | { |
7565 | char buf[30]; | |
c044fabd | 7566 | char *name; |
d4c88bbb | 7567 | size_t len; |
c044fabd | 7568 | asection *sect; |
16e9c715 NC |
7569 | win32_pstatus_t pstatus; |
7570 | ||
7571 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7572 | return TRUE; |
16e9c715 | 7573 | |
e8eab623 | 7574 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7575 | |
7576 | switch (pstatus.data_type) | |
16e9c715 NC |
7577 | { |
7578 | case NOTE_INFO_PROCESS: | |
7579 | /* FIXME: need to add ->core_command. */ | |
7580 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7581 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7582 | break; |
16e9c715 NC |
7583 | |
7584 | case NOTE_INFO_THREAD: | |
7585 | /* Make a ".reg/999" section. */ | |
1f170678 | 7586 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7587 | |
d4c88bbb | 7588 | len = strlen (buf) + 1; |
217aa764 | 7589 | name = bfd_alloc (abfd, len); |
16e9c715 | 7590 | if (name == NULL) |
b34976b6 | 7591 | return FALSE; |
c044fabd | 7592 | |
d4c88bbb | 7593 | memcpy (name, buf, len); |
16e9c715 | 7594 | |
117ed4f8 | 7595 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7596 | if (sect == NULL) |
b34976b6 | 7597 | return FALSE; |
c044fabd | 7598 | |
eea6121a | 7599 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7600 | sect->filepos = (note->descpos |
7601 | + offsetof (struct win32_pstatus, | |
7602 | data.thread_info.thread_context)); | |
16e9c715 NC |
7603 | sect->alignment_power = 2; |
7604 | ||
7605 | if (pstatus.data.thread_info.is_active_thread) | |
7606 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7607 | return FALSE; |
16e9c715 NC |
7608 | break; |
7609 | ||
7610 | case NOTE_INFO_MODULE: | |
7611 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7612 | sprintf (buf, ".module/%08lx", |
7613 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7614 | |
d4c88bbb | 7615 | len = strlen (buf) + 1; |
217aa764 | 7616 | name = bfd_alloc (abfd, len); |
16e9c715 | 7617 | if (name == NULL) |
b34976b6 | 7618 | return FALSE; |
c044fabd | 7619 | |
d4c88bbb | 7620 | memcpy (name, buf, len); |
252b5132 | 7621 | |
117ed4f8 | 7622 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7623 | |
16e9c715 | 7624 | if (sect == NULL) |
b34976b6 | 7625 | return FALSE; |
c044fabd | 7626 | |
eea6121a | 7627 | sect->size = note->descsz; |
16e9c715 | 7628 | sect->filepos = note->descpos; |
16e9c715 NC |
7629 | sect->alignment_power = 2; |
7630 | break; | |
7631 | ||
7632 | default: | |
b34976b6 | 7633 | return TRUE; |
16e9c715 NC |
7634 | } |
7635 | ||
b34976b6 | 7636 | return TRUE; |
16e9c715 NC |
7637 | } |
7638 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7639 | |
b34976b6 | 7640 | static bfd_boolean |
217aa764 | 7641 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7642 | { |
9c5bfbb7 | 7643 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7644 | |
252b5132 RH |
7645 | switch (note->type) |
7646 | { | |
7647 | default: | |
b34976b6 | 7648 | return TRUE; |
252b5132 | 7649 | |
252b5132 | 7650 | case NT_PRSTATUS: |
bb0082d6 AM |
7651 | if (bed->elf_backend_grok_prstatus) |
7652 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7653 | return TRUE; |
bb0082d6 | 7654 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7655 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7656 | #else |
b34976b6 | 7657 | return TRUE; |
252b5132 RH |
7658 | #endif |
7659 | ||
7660 | #if defined (HAVE_PSTATUS_T) | |
7661 | case NT_PSTATUS: | |
7662 | return elfcore_grok_pstatus (abfd, note); | |
7663 | #endif | |
7664 | ||
7665 | #if defined (HAVE_LWPSTATUS_T) | |
7666 | case NT_LWPSTATUS: | |
7667 | return elfcore_grok_lwpstatus (abfd, note); | |
7668 | #endif | |
7669 | ||
7670 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7671 | return elfcore_grok_prfpreg (abfd, note); | |
7672 | ||
16e9c715 | 7673 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7674 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7675 | return elfcore_grok_win32pstatus (abfd, note); |
7676 | #endif | |
7677 | ||
c044fabd | 7678 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7679 | if (note->namesz == 6 |
7680 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7681 | return elfcore_grok_prxfpreg (abfd, note); |
7682 | else | |
b34976b6 | 7683 | return TRUE; |
ff08c6bb | 7684 | |
252b5132 RH |
7685 | case NT_PRPSINFO: |
7686 | case NT_PSINFO: | |
bb0082d6 AM |
7687 | if (bed->elf_backend_grok_psinfo) |
7688 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7689 | return TRUE; |
bb0082d6 | 7690 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7691 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7692 | #else |
b34976b6 | 7693 | return TRUE; |
252b5132 | 7694 | #endif |
3333a7c3 RM |
7695 | |
7696 | case NT_AUXV: | |
7697 | { | |
117ed4f8 AM |
7698 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7699 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7700 | |
7701 | if (sect == NULL) | |
7702 | return FALSE; | |
eea6121a | 7703 | sect->size = note->descsz; |
3333a7c3 | 7704 | sect->filepos = note->descpos; |
3333a7c3 RM |
7705 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7706 | ||
7707 | return TRUE; | |
7708 | } | |
252b5132 RH |
7709 | } |
7710 | } | |
7711 | ||
b34976b6 | 7712 | static bfd_boolean |
217aa764 | 7713 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7714 | { |
7715 | char *cp; | |
7716 | ||
7717 | cp = strchr (note->namedata, '@'); | |
7718 | if (cp != NULL) | |
7719 | { | |
d2b64500 | 7720 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7721 | return TRUE; |
50b2bdb7 | 7722 | } |
b34976b6 | 7723 | return FALSE; |
50b2bdb7 AM |
7724 | } |
7725 | ||
b34976b6 | 7726 | static bfd_boolean |
217aa764 | 7727 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 7728 | { |
50b2bdb7 AM |
7729 | /* Signal number at offset 0x08. */ |
7730 | elf_tdata (abfd)->core_signal | |
7731 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7732 | ||
7733 | /* Process ID at offset 0x50. */ | |
7734 | elf_tdata (abfd)->core_pid | |
7735 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7736 | ||
7737 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7738 | elf_tdata (abfd)->core_command | |
7739 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7740 | ||
7720ba9f MK |
7741 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7742 | note); | |
50b2bdb7 AM |
7743 | } |
7744 | ||
b34976b6 | 7745 | static bfd_boolean |
217aa764 | 7746 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7747 | { |
7748 | int lwp; | |
7749 | ||
7750 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7751 | elf_tdata (abfd)->core_lwpid = lwp; | |
7752 | ||
b4db1224 | 7753 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7754 | { |
7755 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
7756 | find this note before any of the others, which is fine, |
7757 | since the kernel writes this note out first when it | |
7758 | creates a core file. */ | |
47d9a591 | 7759 | |
50b2bdb7 AM |
7760 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7761 | } | |
7762 | ||
b4db1224 JT |
7763 | /* As of Jan 2002 there are no other machine-independent notes |
7764 | defined for NetBSD core files. If the note type is less | |
7765 | than the start of the machine-dependent note types, we don't | |
7766 | understand it. */ | |
47d9a591 | 7767 | |
b4db1224 | 7768 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7769 | return TRUE; |
50b2bdb7 AM |
7770 | |
7771 | ||
7772 | switch (bfd_get_arch (abfd)) | |
7773 | { | |
08a40648 AM |
7774 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
7775 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
7776 | |
7777 | case bfd_arch_alpha: | |
7778 | case bfd_arch_sparc: | |
7779 | switch (note->type) | |
08a40648 AM |
7780 | { |
7781 | case NT_NETBSDCORE_FIRSTMACH+0: | |
7782 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 7783 | |
08a40648 AM |
7784 | case NT_NETBSDCORE_FIRSTMACH+2: |
7785 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 7786 | |
08a40648 AM |
7787 | default: |
7788 | return TRUE; | |
7789 | } | |
50b2bdb7 | 7790 | |
08a40648 AM |
7791 | /* On all other arch's, PT_GETREGS == mach+1 and |
7792 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
7793 | |
7794 | default: | |
7795 | switch (note->type) | |
08a40648 AM |
7796 | { |
7797 | case NT_NETBSDCORE_FIRSTMACH+1: | |
7798 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 7799 | |
08a40648 AM |
7800 | case NT_NETBSDCORE_FIRSTMACH+3: |
7801 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 7802 | |
08a40648 AM |
7803 | default: |
7804 | return TRUE; | |
7805 | } | |
50b2bdb7 AM |
7806 | } |
7807 | /* NOTREACHED */ | |
7808 | } | |
7809 | ||
07c6e936 | 7810 | static bfd_boolean |
d3fd4074 | 7811 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
7812 | { |
7813 | void *ddata = note->descdata; | |
7814 | char buf[100]; | |
7815 | char *name; | |
7816 | asection *sect; | |
f8843e87 AM |
7817 | short sig; |
7818 | unsigned flags; | |
07c6e936 NC |
7819 | |
7820 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7821 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7822 | ||
f8843e87 AM |
7823 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7824 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7825 | ||
7826 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7827 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7828 | |
7829 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7830 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7831 | { | |
7832 | elf_tdata (abfd)->core_signal = sig; | |
7833 | elf_tdata (abfd)->core_lwpid = *tid; | |
7834 | } | |
07c6e936 | 7835 | |
f8843e87 AM |
7836 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7837 | do not come from signals so we make sure we set the current | |
7838 | thread just in case. */ | |
7839 | if (flags & 0x00000080) | |
7840 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7841 | |
7842 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 7843 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 7844 | |
217aa764 | 7845 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7846 | if (name == NULL) |
7847 | return FALSE; | |
7848 | strcpy (name, buf); | |
7849 | ||
117ed4f8 | 7850 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
7851 | if (sect == NULL) |
7852 | return FALSE; | |
7853 | ||
eea6121a | 7854 | sect->size = note->descsz; |
07c6e936 | 7855 | sect->filepos = note->descpos; |
07c6e936 NC |
7856 | sect->alignment_power = 2; |
7857 | ||
7858 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7859 | } | |
7860 | ||
7861 | static bfd_boolean | |
d69f560c KW |
7862 | elfcore_grok_nto_regs (bfd *abfd, |
7863 | Elf_Internal_Note *note, | |
d3fd4074 | 7864 | long tid, |
d69f560c | 7865 | char *base) |
07c6e936 NC |
7866 | { |
7867 | char buf[100]; | |
7868 | char *name; | |
7869 | asection *sect; | |
7870 | ||
d69f560c | 7871 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 7872 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 7873 | |
217aa764 | 7874 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7875 | if (name == NULL) |
7876 | return FALSE; | |
7877 | strcpy (name, buf); | |
7878 | ||
117ed4f8 | 7879 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
7880 | if (sect == NULL) |
7881 | return FALSE; | |
7882 | ||
eea6121a | 7883 | sect->size = note->descsz; |
07c6e936 | 7884 | sect->filepos = note->descpos; |
07c6e936 NC |
7885 | sect->alignment_power = 2; |
7886 | ||
f8843e87 AM |
7887 | /* This is the current thread. */ |
7888 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7889 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7890 | |
7891 | return TRUE; | |
07c6e936 NC |
7892 | } |
7893 | ||
7894 | #define BFD_QNT_CORE_INFO 7 | |
7895 | #define BFD_QNT_CORE_STATUS 8 | |
7896 | #define BFD_QNT_CORE_GREG 9 | |
7897 | #define BFD_QNT_CORE_FPREG 10 | |
7898 | ||
7899 | static bfd_boolean | |
217aa764 | 7900 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7901 | { |
7902 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7903 | tid from the previous call to pass down to the next gregs |
07c6e936 | 7904 | function. */ |
d3fd4074 | 7905 | static long tid = 1; |
07c6e936 NC |
7906 | |
7907 | switch (note->type) | |
7908 | { | |
d69f560c KW |
7909 | case BFD_QNT_CORE_INFO: |
7910 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7911 | case BFD_QNT_CORE_STATUS: | |
7912 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7913 | case BFD_QNT_CORE_GREG: | |
7914 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7915 | case BFD_QNT_CORE_FPREG: | |
7916 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7917 | default: | |
7918 | return TRUE; | |
07c6e936 NC |
7919 | } |
7920 | } | |
7921 | ||
7c76fa91 MS |
7922 | /* Function: elfcore_write_note |
7923 | ||
47d9a591 | 7924 | Inputs: |
a39f3346 | 7925 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
7926 | name of note |
7927 | type of note | |
7928 | data for note | |
7929 | size of data for note | |
7930 | ||
a39f3346 AM |
7931 | Writes note to end of buffer. ELF64 notes are written exactly as |
7932 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
7933 | that they ought to have 8-byte namesz and descsz field, and have | |
7934 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
7935 | ||
7c76fa91 | 7936 | Return: |
a39f3346 | 7937 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
7938 | |
7939 | char * | |
a39f3346 | 7940 | elfcore_write_note (bfd *abfd, |
217aa764 | 7941 | char *buf, |
a39f3346 | 7942 | int *bufsiz, |
217aa764 | 7943 | const char *name, |
a39f3346 | 7944 | int type, |
217aa764 | 7945 | const void *input, |
a39f3346 | 7946 | int size) |
7c76fa91 MS |
7947 | { |
7948 | Elf_External_Note *xnp; | |
d4c88bbb | 7949 | size_t namesz; |
d4c88bbb | 7950 | size_t newspace; |
a39f3346 | 7951 | char *dest; |
7c76fa91 | 7952 | |
d4c88bbb | 7953 | namesz = 0; |
d4c88bbb | 7954 | if (name != NULL) |
a39f3346 | 7955 | namesz = strlen (name) + 1; |
d4c88bbb | 7956 | |
a39f3346 | 7957 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 7958 | |
a39f3346 AM |
7959 | buf = realloc (buf, *bufsiz + newspace); |
7960 | dest = buf + *bufsiz; | |
7c76fa91 MS |
7961 | *bufsiz += newspace; |
7962 | xnp = (Elf_External_Note *) dest; | |
7963 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7964 | H_PUT_32 (abfd, size, xnp->descsz); | |
7965 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7966 | dest = xnp->name; |
7967 | if (name != NULL) | |
7968 | { | |
7969 | memcpy (dest, name, namesz); | |
7970 | dest += namesz; | |
a39f3346 | 7971 | while (namesz & 3) |
d4c88bbb AM |
7972 | { |
7973 | *dest++ = '\0'; | |
a39f3346 | 7974 | ++namesz; |
d4c88bbb AM |
7975 | } |
7976 | } | |
7977 | memcpy (dest, input, size); | |
a39f3346 AM |
7978 | dest += size; |
7979 | while (size & 3) | |
7980 | { | |
7981 | *dest++ = '\0'; | |
7982 | ++size; | |
7983 | } | |
7984 | return buf; | |
7c76fa91 MS |
7985 | } |
7986 | ||
7987 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7988 | char * | |
217aa764 AM |
7989 | elfcore_write_prpsinfo (bfd *abfd, |
7990 | char *buf, | |
7991 | int *bufsiz, | |
7992 | const char *fname, | |
7993 | const char *psargs) | |
7c76fa91 | 7994 | { |
183e98be AM |
7995 | const char *note_name = "CORE"; |
7996 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7997 | ||
7998 | if (bed->elf_backend_write_core_note != NULL) | |
7999 | { | |
8000 | char *ret; | |
8001 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8002 | NT_PRPSINFO, fname, psargs); | |
8003 | if (ret != NULL) | |
8004 | return ret; | |
8005 | } | |
7c76fa91 | 8006 | |
183e98be AM |
8007 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8008 | if (bed->s->elfclass == ELFCLASS32) | |
8009 | { | |
8010 | #if defined (HAVE_PSINFO32_T) | |
8011 | psinfo32_t data; | |
8012 | int note_type = NT_PSINFO; | |
8013 | #else | |
8014 | prpsinfo32_t data; | |
8015 | int note_type = NT_PRPSINFO; | |
8016 | #endif | |
8017 | ||
8018 | memset (&data, 0, sizeof (data)); | |
8019 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8020 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8021 | return elfcore_write_note (abfd, buf, bufsiz, | |
8022 | note_name, note_type, &data, sizeof (data)); | |
8023 | } | |
8024 | else | |
8025 | #endif | |
8026 | { | |
7c76fa91 | 8027 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8028 | psinfo_t data; |
8029 | int note_type = NT_PSINFO; | |
7c76fa91 | 8030 | #else |
183e98be AM |
8031 | prpsinfo_t data; |
8032 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8033 | #endif |
8034 | ||
183e98be AM |
8035 | memset (&data, 0, sizeof (data)); |
8036 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8037 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8038 | return elfcore_write_note (abfd, buf, bufsiz, | |
8039 | note_name, note_type, &data, sizeof (data)); | |
8040 | } | |
7c76fa91 MS |
8041 | } |
8042 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8043 | ||
8044 | #if defined (HAVE_PRSTATUS_T) | |
8045 | char * | |
217aa764 AM |
8046 | elfcore_write_prstatus (bfd *abfd, |
8047 | char *buf, | |
8048 | int *bufsiz, | |
8049 | long pid, | |
8050 | int cursig, | |
8051 | const void *gregs) | |
7c76fa91 | 8052 | { |
183e98be AM |
8053 | const char *note_name = "CORE"; |
8054 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8055 | |
183e98be AM |
8056 | if (bed->elf_backend_write_core_note != NULL) |
8057 | { | |
8058 | char *ret; | |
8059 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8060 | NT_PRSTATUS, | |
8061 | pid, cursig, gregs); | |
8062 | if (ret != NULL) | |
8063 | return ret; | |
8064 | } | |
8065 | ||
8066 | #if defined (HAVE_PRSTATUS32_T) | |
8067 | if (bed->s->elfclass == ELFCLASS32) | |
8068 | { | |
8069 | prstatus32_t prstat; | |
8070 | ||
8071 | memset (&prstat, 0, sizeof (prstat)); | |
8072 | prstat.pr_pid = pid; | |
8073 | prstat.pr_cursig = cursig; | |
8074 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8075 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8076 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8077 | } | |
8078 | else | |
8079 | #endif | |
8080 | { | |
8081 | prstatus_t prstat; | |
8082 | ||
8083 | memset (&prstat, 0, sizeof (prstat)); | |
8084 | prstat.pr_pid = pid; | |
8085 | prstat.pr_cursig = cursig; | |
8086 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8087 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8088 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8089 | } | |
7c76fa91 MS |
8090 | } |
8091 | #endif /* HAVE_PRSTATUS_T */ | |
8092 | ||
51316059 MS |
8093 | #if defined (HAVE_LWPSTATUS_T) |
8094 | char * | |
217aa764 AM |
8095 | elfcore_write_lwpstatus (bfd *abfd, |
8096 | char *buf, | |
8097 | int *bufsiz, | |
8098 | long pid, | |
8099 | int cursig, | |
8100 | const void *gregs) | |
51316059 MS |
8101 | { |
8102 | lwpstatus_t lwpstat; | |
183e98be | 8103 | const char *note_name = "CORE"; |
51316059 MS |
8104 | |
8105 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8106 | lwpstat.pr_lwpid = pid >> 16; | |
8107 | lwpstat.pr_cursig = cursig; | |
8108 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8109 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8110 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8111 | #if !defined(gregs) | |
8112 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8113 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8114 | #else | |
8115 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8116 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8117 | #endif | |
8118 | #endif | |
47d9a591 | 8119 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8120 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8121 | } | |
8122 | #endif /* HAVE_LWPSTATUS_T */ | |
8123 | ||
7c76fa91 MS |
8124 | #if defined (HAVE_PSTATUS_T) |
8125 | char * | |
217aa764 AM |
8126 | elfcore_write_pstatus (bfd *abfd, |
8127 | char *buf, | |
8128 | int *bufsiz, | |
8129 | long pid, | |
6c10990d NC |
8130 | int cursig ATTRIBUTE_UNUSED, |
8131 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8132 | { |
183e98be AM |
8133 | const char *note_name = "CORE"; |
8134 | #if defined (HAVE_PSTATUS32_T) | |
8135 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8136 | |
183e98be AM |
8137 | if (bed->s->elfclass == ELFCLASS32) |
8138 | { | |
8139 | pstatus32_t pstat; | |
8140 | ||
8141 | memset (&pstat, 0, sizeof (pstat)); | |
8142 | pstat.pr_pid = pid & 0xffff; | |
8143 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8144 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8145 | return buf; | |
8146 | } | |
8147 | else | |
8148 | #endif | |
8149 | { | |
8150 | pstatus_t pstat; | |
8151 | ||
8152 | memset (&pstat, 0, sizeof (pstat)); | |
8153 | pstat.pr_pid = pid & 0xffff; | |
8154 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8155 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8156 | return buf; | |
8157 | } | |
7c76fa91 MS |
8158 | } |
8159 | #endif /* HAVE_PSTATUS_T */ | |
8160 | ||
8161 | char * | |
217aa764 AM |
8162 | elfcore_write_prfpreg (bfd *abfd, |
8163 | char *buf, | |
8164 | int *bufsiz, | |
8165 | const void *fpregs, | |
8166 | int size) | |
7c76fa91 | 8167 | { |
183e98be | 8168 | const char *note_name = "CORE"; |
47d9a591 | 8169 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8170 | note_name, NT_FPREGSET, fpregs, size); |
8171 | } | |
8172 | ||
8173 | char * | |
217aa764 AM |
8174 | elfcore_write_prxfpreg (bfd *abfd, |
8175 | char *buf, | |
8176 | int *bufsiz, | |
8177 | const void *xfpregs, | |
8178 | int size) | |
7c76fa91 MS |
8179 | { |
8180 | char *note_name = "LINUX"; | |
47d9a591 | 8181 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8182 | note_name, NT_PRXFPREG, xfpregs, size); |
8183 | } | |
8184 | ||
b34976b6 | 8185 | static bfd_boolean |
217aa764 | 8186 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 8187 | { |
c044fabd KH |
8188 | char *buf; |
8189 | char *p; | |
252b5132 RH |
8190 | |
8191 | if (size <= 0) | |
b34976b6 | 8192 | return TRUE; |
252b5132 | 8193 | |
dc810e39 | 8194 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 8195 | return FALSE; |
252b5132 | 8196 | |
dc810e39 | 8197 | buf = bfd_malloc (size); |
252b5132 | 8198 | if (buf == NULL) |
b34976b6 | 8199 | return FALSE; |
252b5132 | 8200 | |
dc810e39 | 8201 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
8202 | { |
8203 | error: | |
8204 | free (buf); | |
b34976b6 | 8205 | return FALSE; |
252b5132 RH |
8206 | } |
8207 | ||
8208 | p = buf; | |
8209 | while (p < buf + size) | |
8210 | { | |
c044fabd KH |
8211 | /* FIXME: bad alignment assumption. */ |
8212 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8213 | Elf_Internal_Note in; |
8214 | ||
dc810e39 | 8215 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8216 | |
dc810e39 | 8217 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8218 | in.namedata = xnp->name; |
8219 | ||
dc810e39 | 8220 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8221 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8222 | in.descpos = offset + (in.descdata - buf); | |
8223 | ||
0112cd26 | 8224 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) |
08a40648 AM |
8225 | { |
8226 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8227 | goto error; | |
8228 | } | |
0112cd26 | 8229 | else if (CONST_STRNEQ (in.namedata, "QNX")) |
07c6e936 NC |
8230 | { |
8231 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8232 | goto error; | |
8233 | } | |
50b2bdb7 | 8234 | else |
08a40648 AM |
8235 | { |
8236 | if (! elfcore_grok_note (abfd, &in)) | |
8237 | goto error; | |
8238 | } | |
252b5132 RH |
8239 | |
8240 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8241 | } | |
8242 | ||
8243 | free (buf); | |
b34976b6 | 8244 | return TRUE; |
252b5132 | 8245 | } |
98d8431c JB |
8246 | \f |
8247 | /* Providing external access to the ELF program header table. */ | |
8248 | ||
8249 | /* Return an upper bound on the number of bytes required to store a | |
8250 | copy of ABFD's program header table entries. Return -1 if an error | |
8251 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8252 | |
98d8431c | 8253 | long |
217aa764 | 8254 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8255 | { |
8256 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8257 | { | |
8258 | bfd_set_error (bfd_error_wrong_format); | |
8259 | return -1; | |
8260 | } | |
8261 | ||
936e320b | 8262 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8263 | } |
8264 | ||
98d8431c JB |
8265 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8266 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8267 | defined in include/elf/internal.h. To find out how large the | |
8268 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8269 | ||
8270 | Return the number of program header table entries read, or -1 if an | |
8271 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8272 | |
98d8431c | 8273 | int |
217aa764 | 8274 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8275 | { |
8276 | int num_phdrs; | |
8277 | ||
8278 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8279 | { | |
8280 | bfd_set_error (bfd_error_wrong_format); | |
8281 | return -1; | |
8282 | } | |
8283 | ||
8284 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8285 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8286 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8287 | ||
8288 | return num_phdrs; | |
8289 | } | |
ae4221d7 L |
8290 | |
8291 | void | |
217aa764 | 8292 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8293 | { |
d3b05f8d | 8294 | #ifdef BFD64 |
ae4221d7 L |
8295 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8296 | ||
8297 | i_ehdrp = elf_elfheader (abfd); | |
8298 | if (i_ehdrp == NULL) | |
8299 | sprintf_vma (buf, value); | |
8300 | else | |
8301 | { | |
8302 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8303 | { |
ae4221d7 | 8304 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8305 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8306 | #else |
cc55aec9 AM |
8307 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8308 | _bfd_int64_low (value)); | |
ae4221d7 | 8309 | #endif |
cc55aec9 | 8310 | } |
ae4221d7 L |
8311 | else |
8312 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8313 | } | |
d3b05f8d L |
8314 | #else |
8315 | sprintf_vma (buf, value); | |
8316 | #endif | |
ae4221d7 L |
8317 | } |
8318 | ||
8319 | void | |
217aa764 | 8320 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8321 | { |
d3b05f8d | 8322 | #ifdef BFD64 |
ae4221d7 L |
8323 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8324 | ||
8325 | i_ehdrp = elf_elfheader (abfd); | |
8326 | if (i_ehdrp == NULL) | |
8327 | fprintf_vma ((FILE *) stream, value); | |
8328 | else | |
8329 | { | |
8330 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8331 | { |
ae4221d7 | 8332 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8333 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8334 | #else |
cc55aec9 AM |
8335 | fprintf ((FILE *) stream, "%08lx%08lx", |
8336 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8337 | #endif |
cc55aec9 | 8338 | } |
ae4221d7 L |
8339 | else |
8340 | fprintf ((FILE *) stream, "%08lx", | |
8341 | (unsigned long) (value & 0xffffffff)); | |
8342 | } | |
d3b05f8d L |
8343 | #else |
8344 | fprintf_vma ((FILE *) stream, value); | |
8345 | #endif | |
ae4221d7 | 8346 | } |
db6751f2 JJ |
8347 | |
8348 | enum elf_reloc_type_class | |
217aa764 | 8349 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8350 | { |
8351 | return reloc_class_normal; | |
8352 | } | |
f8df10f4 | 8353 | |
47d9a591 | 8354 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8355 | relocation against a local symbol. */ |
8356 | ||
8357 | bfd_vma | |
217aa764 AM |
8358 | _bfd_elf_rela_local_sym (bfd *abfd, |
8359 | Elf_Internal_Sym *sym, | |
8517fae7 | 8360 | asection **psec, |
217aa764 | 8361 | Elf_Internal_Rela *rel) |
f8df10f4 | 8362 | { |
8517fae7 | 8363 | asection *sec = *psec; |
f8df10f4 JJ |
8364 | bfd_vma relocation; |
8365 | ||
8366 | relocation = (sec->output_section->vma | |
8367 | + sec->output_offset | |
8368 | + sym->st_value); | |
8369 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8370 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8371 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8372 | { |
f8df10f4 | 8373 | rel->r_addend = |
8517fae7 | 8374 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8375 | elf_section_data (sec)->sec_info, |
753731ee AM |
8376 | sym->st_value + rel->r_addend); |
8377 | if (sec != *psec) | |
8378 | { | |
8379 | /* If we have changed the section, and our original section is | |
8380 | marked with SEC_EXCLUDE, it means that the original | |
8381 | SEC_MERGE section has been completely subsumed in some | |
8382 | other SEC_MERGE section. In this case, we need to leave | |
8383 | some info around for --emit-relocs. */ | |
8384 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8385 | sec->kept_section = *psec; | |
8386 | sec = *psec; | |
8387 | } | |
8517fae7 AM |
8388 | rel->r_addend -= relocation; |
8389 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8390 | } |
8391 | return relocation; | |
8392 | } | |
c629eae0 JJ |
8393 | |
8394 | bfd_vma | |
217aa764 AM |
8395 | _bfd_elf_rel_local_sym (bfd *abfd, |
8396 | Elf_Internal_Sym *sym, | |
8397 | asection **psec, | |
8398 | bfd_vma addend) | |
47d9a591 | 8399 | { |
c629eae0 JJ |
8400 | asection *sec = *psec; |
8401 | ||
68bfbfcc | 8402 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8403 | return sym->st_value + addend; |
8404 | ||
8405 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8406 | elf_section_data (sec)->sec_info, |
753731ee | 8407 | sym->st_value + addend); |
c629eae0 JJ |
8408 | } |
8409 | ||
8410 | bfd_vma | |
217aa764 | 8411 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8412 | struct bfd_link_info *info, |
217aa764 AM |
8413 | asection *sec, |
8414 | bfd_vma offset) | |
c629eae0 | 8415 | { |
68bfbfcc | 8416 | switch (sec->sec_info_type) |
65765700 JJ |
8417 | { |
8418 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8419 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8420 | offset); | |
65765700 | 8421 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8422 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8423 | default: |
8424 | return offset; | |
8425 | } | |
c629eae0 | 8426 | } |
3333a7c3 RM |
8427 | \f |
8428 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8429 | reconstruct an ELF file by reading the segments out of remote memory | |
8430 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8431 | points to. If not null, *LOADBASEP is filled in with the difference | |
8432 | between the VMAs from which the segments were read, and the VMAs the | |
8433 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8434 | ||
8435 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8436 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8437 | should return zero on success or an `errno' code on failure. TEMPL must | |
8438 | be a BFD for an ELF target with the word size and byte order found in | |
8439 | the remote memory. */ | |
8440 | ||
8441 | bfd * | |
217aa764 AM |
8442 | bfd_elf_bfd_from_remote_memory |
8443 | (bfd *templ, | |
8444 | bfd_vma ehdr_vma, | |
8445 | bfd_vma *loadbasep, | |
f075ee0c | 8446 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8447 | { |
8448 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8449 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8450 | } | |
4c45e5c9 JJ |
8451 | \f |
8452 | long | |
c9727e01 AM |
8453 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8454 | long symcount ATTRIBUTE_UNUSED, | |
8455 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8456 | long dynsymcount, |
c9727e01 AM |
8457 | asymbol **dynsyms, |
8458 | asymbol **ret) | |
4c45e5c9 JJ |
8459 | { |
8460 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8461 | asection *relplt; | |
8462 | asymbol *s; | |
8463 | const char *relplt_name; | |
8464 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8465 | arelent *p; | |
8466 | long count, i, n; | |
8467 | size_t size; | |
8468 | Elf_Internal_Shdr *hdr; | |
8469 | char *names; | |
8470 | asection *plt; | |
8471 | ||
8615f3f2 AM |
8472 | *ret = NULL; |
8473 | ||
90e3cdf2 JJ |
8474 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8475 | return 0; | |
8476 | ||
8615f3f2 AM |
8477 | if (dynsymcount <= 0) |
8478 | return 0; | |
8479 | ||
4c45e5c9 JJ |
8480 | if (!bed->plt_sym_val) |
8481 | return 0; | |
8482 | ||
8483 | relplt_name = bed->relplt_name; | |
8484 | if (relplt_name == NULL) | |
8485 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8486 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8487 | if (relplt == NULL) | |
8488 | return 0; | |
8489 | ||
8490 | hdr = &elf_section_data (relplt)->this_hdr; | |
8491 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8492 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8493 | return 0; | |
8494 | ||
8495 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8496 | if (plt == NULL) | |
8497 | return 0; | |
8498 | ||
8499 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8500 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8501 | return -1; |
8502 | ||
eea6121a | 8503 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8504 | size = count * sizeof (asymbol); |
8505 | p = relplt->relocation; | |
b7fd5ce1 | 8506 | for (i = 0; i < count; i++, p++) |
4c45e5c9 JJ |
8507 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); |
8508 | ||
8509 | s = *ret = bfd_malloc (size); | |
8510 | if (s == NULL) | |
8511 | return -1; | |
8512 | ||
8513 | names = (char *) (s + count); | |
8514 | p = relplt->relocation; | |
8515 | n = 0; | |
8516 | for (i = 0; i < count; i++, s++, p++) | |
8517 | { | |
8518 | size_t len; | |
8519 | bfd_vma addr; | |
8520 | ||
8521 | addr = bed->plt_sym_val (i, plt, p); | |
8522 | if (addr == (bfd_vma) -1) | |
8523 | continue; | |
8524 | ||
8525 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8526 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8527 | we are defining a symbol, ensure one of them is set. */ | |
8528 | if ((s->flags & BSF_LOCAL) == 0) | |
8529 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8530 | s->section = plt; |
8531 | s->value = addr - plt->vma; | |
8532 | s->name = names; | |
8533 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8534 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8535 | names += len; | |
8536 | memcpy (names, "@plt", sizeof ("@plt")); | |
8537 | names += sizeof ("@plt"); | |
8538 | ++n; | |
8539 | } | |
8540 | ||
8541 | return n; | |
8542 | } | |
3d7f7666 | 8543 | |
3b22753a L |
8544 | /* It is only used by x86-64 so far. */ |
8545 | asection _bfd_elf_large_com_section | |
8546 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8547 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 8548 | |
d1036acb L |
8549 | void |
8550 | _bfd_elf_set_osabi (bfd * abfd, | |
8551 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
8552 | { | |
8553 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
8554 | ||
8555 | i_ehdrp = elf_elfheader (abfd); | |
8556 | ||
8557 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
8558 | } | |
fcb93ecf PB |
8559 | |
8560 | ||
8561 | /* Return TRUE for ELF symbol types that represent functions. | |
8562 | This is the default version of this function, which is sufficient for | |
8563 | most targets. It returns true if TYPE is STT_FUNC. */ | |
8564 | ||
8565 | bfd_boolean | |
8566 | _bfd_elf_is_function_type (unsigned int type) | |
8567 | { | |
8568 | return (type == STT_FUNC); | |
8569 | } |