Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
fad2f28d | 4 | 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
1b74d094 BW |
22 | /* |
23 | SECTION | |
252b5132 RH |
24 | ELF backends |
25 | ||
26 | BFD support for ELF formats is being worked on. | |
27 | Currently, the best supported back ends are for sparc and i386 | |
28 | (running svr4 or Solaris 2). | |
29 | ||
30 | Documentation of the internals of the support code still needs | |
31 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 32 | haven't bothered yet. */ |
252b5132 | 33 | |
7ee38065 MS |
34 | /* For sparc64-cross-sparc32. */ |
35 | #define _SYSCALL32 | |
252b5132 RH |
36 | #include "bfd.h" |
37 | #include "sysdep.h" | |
38 | #include "bfdlink.h" | |
39 | #include "libbfd.h" | |
40 | #define ARCH_SIZE 0 | |
41 | #include "elf-bfd.h" | |
e0e8c97f | 42 | #include "libiberty.h" |
252b5132 | 43 | |
217aa764 | 44 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 45 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
46 | static bfd_boolean prep_headers (bfd *); |
47 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
48 | static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ; | |
50b2bdb7 | 49 | |
252b5132 RH |
50 | /* Swap version information in and out. The version information is |
51 | currently size independent. If that ever changes, this code will | |
52 | need to move into elfcode.h. */ | |
53 | ||
54 | /* Swap in a Verdef structure. */ | |
55 | ||
56 | void | |
217aa764 AM |
57 | _bfd_elf_swap_verdef_in (bfd *abfd, |
58 | const Elf_External_Verdef *src, | |
59 | Elf_Internal_Verdef *dst) | |
252b5132 | 60 | { |
dc810e39 AM |
61 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
62 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
63 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
64 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
65 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
66 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
67 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
68 | } |
69 | ||
70 | /* Swap out a Verdef structure. */ | |
71 | ||
72 | void | |
217aa764 AM |
73 | _bfd_elf_swap_verdef_out (bfd *abfd, |
74 | const Elf_Internal_Verdef *src, | |
75 | Elf_External_Verdef *dst) | |
252b5132 | 76 | { |
dc810e39 AM |
77 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
78 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
79 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
80 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
81 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
82 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
83 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
84 | } |
85 | ||
86 | /* Swap in a Verdaux structure. */ | |
87 | ||
88 | void | |
217aa764 AM |
89 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
90 | const Elf_External_Verdaux *src, | |
91 | Elf_Internal_Verdaux *dst) | |
252b5132 | 92 | { |
dc810e39 AM |
93 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
94 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
95 | } |
96 | ||
97 | /* Swap out a Verdaux structure. */ | |
98 | ||
99 | void | |
217aa764 AM |
100 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
101 | const Elf_Internal_Verdaux *src, | |
102 | Elf_External_Verdaux *dst) | |
252b5132 | 103 | { |
dc810e39 AM |
104 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
105 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
106 | } |
107 | ||
108 | /* Swap in a Verneed structure. */ | |
109 | ||
110 | void | |
217aa764 AM |
111 | _bfd_elf_swap_verneed_in (bfd *abfd, |
112 | const Elf_External_Verneed *src, | |
113 | Elf_Internal_Verneed *dst) | |
252b5132 | 114 | { |
dc810e39 AM |
115 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
116 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
117 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
118 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
119 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
120 | } |
121 | ||
122 | /* Swap out a Verneed structure. */ | |
123 | ||
124 | void | |
217aa764 AM |
125 | _bfd_elf_swap_verneed_out (bfd *abfd, |
126 | const Elf_Internal_Verneed *src, | |
127 | Elf_External_Verneed *dst) | |
252b5132 | 128 | { |
dc810e39 AM |
129 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
130 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
131 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
132 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
133 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
134 | } |
135 | ||
136 | /* Swap in a Vernaux structure. */ | |
137 | ||
138 | void | |
217aa764 AM |
139 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
140 | const Elf_External_Vernaux *src, | |
141 | Elf_Internal_Vernaux *dst) | |
252b5132 | 142 | { |
dc810e39 AM |
143 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
144 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
145 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
146 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
147 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
148 | } |
149 | ||
150 | /* Swap out a Vernaux structure. */ | |
151 | ||
152 | void | |
217aa764 AM |
153 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
154 | const Elf_Internal_Vernaux *src, | |
155 | Elf_External_Vernaux *dst) | |
252b5132 | 156 | { |
dc810e39 AM |
157 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
158 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
159 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
160 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
161 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
162 | } |
163 | ||
164 | /* Swap in a Versym structure. */ | |
165 | ||
166 | void | |
217aa764 AM |
167 | _bfd_elf_swap_versym_in (bfd *abfd, |
168 | const Elf_External_Versym *src, | |
169 | Elf_Internal_Versym *dst) | |
252b5132 | 170 | { |
dc810e39 | 171 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
172 | } |
173 | ||
174 | /* Swap out a Versym structure. */ | |
175 | ||
176 | void | |
217aa764 AM |
177 | _bfd_elf_swap_versym_out (bfd *abfd, |
178 | const Elf_Internal_Versym *src, | |
179 | Elf_External_Versym *dst) | |
252b5132 | 180 | { |
dc810e39 | 181 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
182 | } |
183 | ||
184 | /* Standard ELF hash function. Do not change this function; you will | |
185 | cause invalid hash tables to be generated. */ | |
3a99b017 | 186 | |
252b5132 | 187 | unsigned long |
217aa764 | 188 | bfd_elf_hash (const char *namearg) |
252b5132 | 189 | { |
3a99b017 | 190 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
191 | unsigned long h = 0; |
192 | unsigned long g; | |
193 | int ch; | |
194 | ||
195 | while ((ch = *name++) != '\0') | |
196 | { | |
197 | h = (h << 4) + ch; | |
198 | if ((g = (h & 0xf0000000)) != 0) | |
199 | { | |
200 | h ^= g >> 24; | |
201 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
202 | this case and on some machines one insn instead of two. */ | |
203 | h ^= g; | |
204 | } | |
205 | } | |
32dfa85d | 206 | return h & 0xffffffff; |
252b5132 RH |
207 | } |
208 | ||
b34976b6 | 209 | bfd_boolean |
217aa764 | 210 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 211 | { |
c044fabd KH |
212 | /* This just does initialization. */ |
213 | /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */ | |
217aa764 | 214 | elf_tdata (abfd) = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); |
252b5132 | 215 | if (elf_tdata (abfd) == 0) |
b34976b6 | 216 | return FALSE; |
c044fabd KH |
217 | /* Since everything is done at close time, do we need any |
218 | initialization? */ | |
252b5132 | 219 | |
b34976b6 | 220 | return TRUE; |
252b5132 RH |
221 | } |
222 | ||
b34976b6 | 223 | bfd_boolean |
217aa764 | 224 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 225 | { |
c044fabd | 226 | /* I think this can be done just like an object file. */ |
252b5132 RH |
227 | return bfd_elf_mkobject (abfd); |
228 | } | |
229 | ||
230 | char * | |
217aa764 | 231 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
232 | { |
233 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 234 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
235 | file_ptr offset; |
236 | bfd_size_type shstrtabsize; | |
252b5132 RH |
237 | |
238 | i_shdrp = elf_elfsections (abfd); | |
239 | if (i_shdrp == 0 || i_shdrp[shindex] == 0) | |
f075ee0c | 240 | return NULL; |
252b5132 | 241 | |
f075ee0c | 242 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
243 | if (shstrtab == NULL) |
244 | { | |
c044fabd | 245 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
246 | offset = i_shdrp[shindex]->sh_offset; |
247 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
248 | |
249 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
250 | in case the string table is not terminated. */ | |
251 | if (shstrtabsize + 1 == 0 | |
252 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
253 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
254 | shstrtab = NULL; | |
255 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
256 | { | |
257 | if (bfd_get_error () != bfd_error_system_call) | |
258 | bfd_set_error (bfd_error_file_truncated); | |
259 | shstrtab = NULL; | |
260 | } | |
261 | else | |
262 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 263 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 264 | } |
f075ee0c | 265 | return (char *) shstrtab; |
252b5132 RH |
266 | } |
267 | ||
268 | char * | |
217aa764 AM |
269 | bfd_elf_string_from_elf_section (bfd *abfd, |
270 | unsigned int shindex, | |
271 | unsigned int strindex) | |
252b5132 RH |
272 | { |
273 | Elf_Internal_Shdr *hdr; | |
274 | ||
275 | if (strindex == 0) | |
276 | return ""; | |
277 | ||
278 | hdr = elf_elfsections (abfd)[shindex]; | |
279 | ||
280 | if (hdr->contents == NULL | |
281 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
282 | return NULL; | |
283 | ||
284 | if (strindex >= hdr->sh_size) | |
285 | { | |
1b3a8575 | 286 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 287 | (*_bfd_error_handler) |
d003868e AM |
288 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
289 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 290 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 291 | ? ".shstrtab" |
1b3a8575 | 292 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
293 | return ""; |
294 | } | |
295 | ||
296 | return ((char *) hdr->contents) + strindex; | |
297 | } | |
298 | ||
6cdc0ccc AM |
299 | /* Read and convert symbols to internal format. |
300 | SYMCOUNT specifies the number of symbols to read, starting from | |
301 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
302 | are non-NULL, they are used to store the internal symbols, external | |
303 | symbols, and symbol section index extensions, respectively. */ | |
304 | ||
305 | Elf_Internal_Sym * | |
217aa764 AM |
306 | bfd_elf_get_elf_syms (bfd *ibfd, |
307 | Elf_Internal_Shdr *symtab_hdr, | |
308 | size_t symcount, | |
309 | size_t symoffset, | |
310 | Elf_Internal_Sym *intsym_buf, | |
311 | void *extsym_buf, | |
312 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
313 | { |
314 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 315 | void *alloc_ext; |
df622259 | 316 | const bfd_byte *esym; |
6cdc0ccc AM |
317 | Elf_External_Sym_Shndx *alloc_extshndx; |
318 | Elf_External_Sym_Shndx *shndx; | |
319 | Elf_Internal_Sym *isym; | |
320 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 321 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
322 | size_t extsym_size; |
323 | bfd_size_type amt; | |
324 | file_ptr pos; | |
325 | ||
326 | if (symcount == 0) | |
327 | return intsym_buf; | |
328 | ||
329 | /* Normal syms might have section extension entries. */ | |
330 | shndx_hdr = NULL; | |
331 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
332 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
333 | ||
334 | /* Read the symbols. */ | |
335 | alloc_ext = NULL; | |
336 | alloc_extshndx = NULL; | |
337 | bed = get_elf_backend_data (ibfd); | |
338 | extsym_size = bed->s->sizeof_sym; | |
339 | amt = symcount * extsym_size; | |
340 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
341 | if (extsym_buf == NULL) | |
342 | { | |
d0fb9a8d | 343 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
344 | extsym_buf = alloc_ext; |
345 | } | |
346 | if (extsym_buf == NULL | |
347 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
348 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
349 | { | |
350 | intsym_buf = NULL; | |
351 | goto out; | |
352 | } | |
353 | ||
354 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
355 | extshndx_buf = NULL; | |
356 | else | |
357 | { | |
358 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
359 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
360 | if (extshndx_buf == NULL) | |
361 | { | |
d0fb9a8d JJ |
362 | alloc_extshndx = bfd_malloc2 (symcount, |
363 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
364 | extshndx_buf = alloc_extshndx; |
365 | } | |
366 | if (extshndx_buf == NULL | |
367 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
368 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
369 | { | |
370 | intsym_buf = NULL; | |
371 | goto out; | |
372 | } | |
373 | } | |
374 | ||
375 | if (intsym_buf == NULL) | |
376 | { | |
d0fb9a8d | 377 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
378 | if (intsym_buf == NULL) |
379 | goto out; | |
380 | } | |
381 | ||
382 | /* Convert the symbols to internal form. */ | |
383 | isymend = intsym_buf + symcount; | |
384 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
385 | isym < isymend; | |
386 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
217aa764 | 387 | (*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym); |
6cdc0ccc AM |
388 | |
389 | out: | |
390 | if (alloc_ext != NULL) | |
391 | free (alloc_ext); | |
392 | if (alloc_extshndx != NULL) | |
393 | free (alloc_extshndx); | |
394 | ||
395 | return intsym_buf; | |
396 | } | |
397 | ||
5cab59f6 AM |
398 | /* Look up a symbol name. */ |
399 | const char * | |
be8dd2ca AM |
400 | bfd_elf_sym_name (bfd *abfd, |
401 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
402 | Elf_Internal_Sym *isym, |
403 | asection *sym_sec) | |
5cab59f6 | 404 | { |
26c61ae5 | 405 | const char *name; |
5cab59f6 | 406 | unsigned int iname = isym->st_name; |
be8dd2ca | 407 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 408 | |
138f35cc JJ |
409 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
410 | /* Check for a bogus st_shndx to avoid crashing. */ | |
411 | && isym->st_shndx < elf_numsections (abfd) | |
412 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
413 | { |
414 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
415 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
416 | } | |
417 | ||
26c61ae5 L |
418 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
419 | if (name == NULL) | |
420 | name = "(null)"; | |
421 | else if (sym_sec && *name == '\0') | |
422 | name = bfd_section_name (abfd, sym_sec); | |
423 | ||
424 | return name; | |
5cab59f6 AM |
425 | } |
426 | ||
dbb410c3 AM |
427 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
428 | sections. The first element is the flags, the rest are section | |
429 | pointers. */ | |
430 | ||
431 | typedef union elf_internal_group { | |
432 | Elf_Internal_Shdr *shdr; | |
433 | unsigned int flags; | |
434 | } Elf_Internal_Group; | |
435 | ||
b885599b AM |
436 | /* Return the name of the group signature symbol. Why isn't the |
437 | signature just a string? */ | |
438 | ||
439 | static const char * | |
217aa764 | 440 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 441 | { |
9dce4196 | 442 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
443 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
444 | Elf_External_Sym_Shndx eshndx; | |
445 | Elf_Internal_Sym isym; | |
b885599b | 446 | |
13792e9d L |
447 | /* First we need to ensure the symbol table is available. Make sure |
448 | that it is a symbol table section. */ | |
449 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
450 | if (hdr->sh_type != SHT_SYMTAB | |
451 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
452 | return NULL; |
453 | ||
9dce4196 AM |
454 | /* Go read the symbol. */ |
455 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
456 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
457 | &isym, esym, &eshndx) == NULL) | |
b885599b | 458 | return NULL; |
9dce4196 | 459 | |
26c61ae5 | 460 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
461 | } |
462 | ||
dbb410c3 AM |
463 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
464 | ||
b34976b6 | 465 | static bfd_boolean |
217aa764 | 466 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
467 | { |
468 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
469 | ||
470 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
471 | is set to -1 if there are no SHT_GROUP sections. */ | |
472 | if (num_group == 0) | |
473 | { | |
474 | unsigned int i, shnum; | |
475 | ||
476 | /* First count the number of groups. If we have a SHT_GROUP | |
477 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 478 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
479 | num_group = 0; |
480 | for (i = 0; i < shnum; i++) | |
481 | { | |
482 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
483 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
484 | num_group += 1; | |
485 | } | |
486 | ||
487 | if (num_group == 0) | |
20dbb49d L |
488 | { |
489 | num_group = (unsigned) -1; | |
490 | elf_tdata (abfd)->num_group = num_group; | |
491 | } | |
492 | else | |
dbb410c3 AM |
493 | { |
494 | /* We keep a list of elf section headers for group sections, | |
495 | so we can find them quickly. */ | |
20dbb49d | 496 | bfd_size_type amt; |
d0fb9a8d | 497 | |
20dbb49d | 498 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
499 | elf_tdata (abfd)->group_sect_ptr |
500 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 501 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 502 | return FALSE; |
dbb410c3 AM |
503 | |
504 | num_group = 0; | |
505 | for (i = 0; i < shnum; i++) | |
506 | { | |
507 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
508 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
509 | { | |
973ffd63 | 510 | unsigned char *src; |
dbb410c3 AM |
511 | Elf_Internal_Group *dest; |
512 | ||
513 | /* Add to list of sections. */ | |
514 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
515 | num_group += 1; | |
516 | ||
517 | /* Read the raw contents. */ | |
518 | BFD_ASSERT (sizeof (*dest) >= 4); | |
519 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
520 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
521 | sizeof (*dest) / 4); | |
dbb410c3 AM |
522 | if (shdr->contents == NULL |
523 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
524 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
525 | != shdr->sh_size)) | |
b34976b6 | 526 | return FALSE; |
dbb410c3 AM |
527 | |
528 | /* Translate raw contents, a flag word followed by an | |
529 | array of elf section indices all in target byte order, | |
530 | to the flag word followed by an array of elf section | |
531 | pointers. */ | |
532 | src = shdr->contents + shdr->sh_size; | |
533 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
534 | while (1) | |
535 | { | |
536 | unsigned int idx; | |
537 | ||
538 | src -= 4; | |
539 | --dest; | |
540 | idx = H_GET_32 (abfd, src); | |
541 | if (src == shdr->contents) | |
542 | { | |
543 | dest->flags = idx; | |
b885599b AM |
544 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
545 | shdr->bfd_section->flags | |
546 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
547 | break; |
548 | } | |
549 | if (idx >= shnum) | |
550 | { | |
551 | ((*_bfd_error_handler) | |
d003868e | 552 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
553 | idx = 0; |
554 | } | |
555 | dest->shdr = elf_elfsections (abfd)[idx]; | |
556 | } | |
557 | } | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
562 | if (num_group != (unsigned) -1) | |
563 | { | |
564 | unsigned int i; | |
565 | ||
566 | for (i = 0; i < num_group; i++) | |
567 | { | |
568 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
569 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
570 | unsigned int n_elt = shdr->sh_size / 4; | |
571 | ||
572 | /* Look through this group's sections to see if current | |
573 | section is a member. */ | |
574 | while (--n_elt != 0) | |
575 | if ((++idx)->shdr == hdr) | |
576 | { | |
e0e8c97f | 577 | asection *s = NULL; |
dbb410c3 AM |
578 | |
579 | /* We are a member of this group. Go looking through | |
580 | other members to see if any others are linked via | |
581 | next_in_group. */ | |
582 | idx = (Elf_Internal_Group *) shdr->contents; | |
583 | n_elt = shdr->sh_size / 4; | |
584 | while (--n_elt != 0) | |
585 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 586 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
587 | break; |
588 | if (n_elt != 0) | |
589 | { | |
dbb410c3 AM |
590 | /* Snarf the group name from other member, and |
591 | insert current section in circular list. */ | |
945906ff AM |
592 | elf_group_name (newsect) = elf_group_name (s); |
593 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
594 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
595 | } |
596 | else | |
597 | { | |
dbb410c3 AM |
598 | const char *gname; |
599 | ||
b885599b AM |
600 | gname = group_signature (abfd, shdr); |
601 | if (gname == NULL) | |
b34976b6 | 602 | return FALSE; |
945906ff | 603 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
604 | |
605 | /* Start a circular list with one element. */ | |
945906ff | 606 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 607 | } |
b885599b | 608 | |
9dce4196 AM |
609 | /* If the group section has been created, point to the |
610 | new member. */ | |
dbb410c3 | 611 | if (shdr->bfd_section != NULL) |
945906ff | 612 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 613 | |
dbb410c3 AM |
614 | i = num_group - 1; |
615 | break; | |
616 | } | |
617 | } | |
618 | } | |
619 | ||
945906ff | 620 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 621 | { |
d003868e AM |
622 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
623 | abfd, newsect); | |
dbb410c3 | 624 | } |
b34976b6 | 625 | return TRUE; |
dbb410c3 AM |
626 | } |
627 | ||
3d7f7666 | 628 | bfd_boolean |
dd863624 | 629 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
630 | { |
631 | unsigned int i; | |
632 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
633 | bfd_boolean result = TRUE; | |
dd863624 L |
634 | asection *s; |
635 | ||
636 | /* Process SHF_LINK_ORDER. */ | |
637 | for (s = abfd->sections; s != NULL; s = s->next) | |
638 | { | |
639 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
640 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
641 | { | |
642 | unsigned int elfsec = this_hdr->sh_link; | |
643 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
644 | not set the sh_link or sh_info fields. Hence we could | |
645 | get the situation where elfsec is 0. */ | |
646 | if (elfsec == 0) | |
647 | { | |
648 | const struct elf_backend_data *bed | |
649 | = get_elf_backend_data (abfd); | |
650 | if (bed->link_order_error_handler) | |
651 | bed->link_order_error_handler | |
652 | (_("%B: warning: sh_link not set for section `%A'"), | |
653 | abfd, s); | |
654 | } | |
655 | else | |
656 | { | |
25bbc984 L |
657 | asection *link; |
658 | ||
dd863624 | 659 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
660 | |
661 | /* PR 1991, 2008: | |
662 | Some strip/objcopy may leave an incorrect value in | |
663 | sh_link. We don't want to proceed. */ | |
664 | link = this_hdr->bfd_section; | |
665 | if (link == NULL) | |
666 | { | |
667 | (*_bfd_error_handler) | |
668 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
669 | s->owner, s, elfsec); | |
670 | result = FALSE; | |
671 | } | |
672 | ||
673 | elf_linked_to_section (s) = link; | |
dd863624 L |
674 | } |
675 | } | |
676 | } | |
3d7f7666 | 677 | |
dd863624 | 678 | /* Process section groups. */ |
3d7f7666 L |
679 | if (num_group == (unsigned) -1) |
680 | return result; | |
681 | ||
682 | for (i = 0; i < num_group; i++) | |
683 | { | |
684 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
685 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
686 | unsigned int n_elt = shdr->sh_size / 4; | |
687 | ||
688 | while (--n_elt != 0) | |
689 | if ((++idx)->shdr->bfd_section) | |
690 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
691 | else if (idx->shdr->sh_type == SHT_RELA | |
692 | || idx->shdr->sh_type == SHT_REL) | |
693 | /* We won't include relocation sections in section groups in | |
694 | output object files. We adjust the group section size here | |
695 | so that relocatable link will work correctly when | |
696 | relocation sections are in section group in input object | |
697 | files. */ | |
698 | shdr->bfd_section->size -= 4; | |
699 | else | |
700 | { | |
701 | /* There are some unknown sections in the group. */ | |
702 | (*_bfd_error_handler) | |
d003868e AM |
703 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
704 | abfd, | |
3d7f7666 | 705 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
706 | bfd_elf_string_from_elf_section (abfd, |
707 | (elf_elfheader (abfd) | |
708 | ->e_shstrndx), | |
709 | idx->shdr->sh_name), | |
3d7f7666 L |
710 | shdr->bfd_section->name); |
711 | result = FALSE; | |
712 | } | |
713 | } | |
714 | return result; | |
715 | } | |
716 | ||
72adc230 AM |
717 | bfd_boolean |
718 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
719 | { | |
720 | return elf_next_in_group (sec) != NULL; | |
721 | } | |
722 | ||
252b5132 RH |
723 | /* Make a BFD section from an ELF section. We store a pointer to the |
724 | BFD section in the bfd_section field of the header. */ | |
725 | ||
b34976b6 | 726 | bfd_boolean |
217aa764 AM |
727 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
728 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
729 | const char *name, |
730 | int shindex) | |
252b5132 RH |
731 | { |
732 | asection *newsect; | |
733 | flagword flags; | |
9c5bfbb7 | 734 | const struct elf_backend_data *bed; |
252b5132 RH |
735 | |
736 | if (hdr->bfd_section != NULL) | |
737 | { | |
738 | BFD_ASSERT (strcmp (name, | |
739 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 740 | return TRUE; |
252b5132 RH |
741 | } |
742 | ||
743 | newsect = bfd_make_section_anyway (abfd, name); | |
744 | if (newsect == NULL) | |
b34976b6 | 745 | return FALSE; |
252b5132 | 746 | |
1829f4b2 AM |
747 | hdr->bfd_section = newsect; |
748 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 749 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 750 | |
2f89ff8d L |
751 | /* Always use the real type/flags. */ |
752 | elf_section_type (newsect) = hdr->sh_type; | |
753 | elf_section_flags (newsect) = hdr->sh_flags; | |
754 | ||
252b5132 RH |
755 | newsect->filepos = hdr->sh_offset; |
756 | ||
757 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
758 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
759 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 760 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 761 | return FALSE; |
252b5132 RH |
762 | |
763 | flags = SEC_NO_FLAGS; | |
764 | if (hdr->sh_type != SHT_NOBITS) | |
765 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 766 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 767 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
768 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
769 | { | |
770 | flags |= SEC_ALLOC; | |
771 | if (hdr->sh_type != SHT_NOBITS) | |
772 | flags |= SEC_LOAD; | |
773 | } | |
774 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
775 | flags |= SEC_READONLY; | |
776 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
777 | flags |= SEC_CODE; | |
778 | else if ((flags & SEC_LOAD) != 0) | |
779 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
780 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
781 | { | |
782 | flags |= SEC_MERGE; | |
783 | newsect->entsize = hdr->sh_entsize; | |
784 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
785 | flags |= SEC_STRINGS; | |
786 | } | |
dbb410c3 AM |
787 | if (hdr->sh_flags & SHF_GROUP) |
788 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 789 | return FALSE; |
13ae64f3 JJ |
790 | if ((hdr->sh_flags & SHF_TLS) != 0) |
791 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 792 | |
3d2b39cf | 793 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 794 | { |
3d2b39cf L |
795 | /* The debugging sections appear to be recognized only by name, |
796 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
797 | static const struct | |
798 | { | |
799 | const char *name; | |
800 | int len; | |
801 | } debug_sections [] = | |
802 | { | |
803 | { "debug", 5 }, /* 'd' */ | |
804 | { NULL, 0 }, /* 'e' */ | |
805 | { NULL, 0 }, /* 'f' */ | |
806 | { "gnu.linkonce.wi.", 17 }, /* 'g' */ | |
807 | { NULL, 0 }, /* 'h' */ | |
808 | { NULL, 0 }, /* 'i' */ | |
809 | { NULL, 0 }, /* 'j' */ | |
810 | { NULL, 0 }, /* 'k' */ | |
811 | { "line", 4 }, /* 'l' */ | |
812 | { NULL, 0 }, /* 'm' */ | |
813 | { NULL, 0 }, /* 'n' */ | |
814 | { NULL, 0 }, /* 'o' */ | |
815 | { NULL, 0 }, /* 'p' */ | |
816 | { NULL, 0 }, /* 'q' */ | |
817 | { NULL, 0 }, /* 'r' */ | |
818 | { "stab", 4 } /* 's' */ | |
819 | }; | |
820 | ||
821 | if (name [0] == '.') | |
822 | { | |
823 | int i = name [1] - 'd'; | |
824 | if (i >= 0 | |
825 | && i < (int) ARRAY_SIZE (debug_sections) | |
826 | && debug_sections [i].name != NULL | |
827 | && strncmp (&name [1], debug_sections [i].name, | |
828 | debug_sections [i].len) == 0) | |
829 | flags |= SEC_DEBUGGING; | |
830 | } | |
831 | } | |
252b5132 RH |
832 | |
833 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
834 | only link a single copy of the section. This is used to support | |
835 | g++. g++ will emit each template expansion in its own section. | |
836 | The symbols will be defined as weak, so that multiple definitions | |
837 | are permitted. The GNU linker extension is to actually discard | |
838 | all but one of the sections. */ | |
b885599b AM |
839 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
840 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
841 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
842 | ||
fa152c49 JW |
843 | bed = get_elf_backend_data (abfd); |
844 | if (bed->elf_backend_section_flags) | |
845 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 846 | return FALSE; |
fa152c49 | 847 | |
252b5132 | 848 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 849 | return FALSE; |
252b5132 RH |
850 | |
851 | if ((flags & SEC_ALLOC) != 0) | |
852 | { | |
853 | Elf_Internal_Phdr *phdr; | |
854 | unsigned int i; | |
855 | ||
856 | /* Look through the phdrs to see if we need to adjust the lma. | |
857 | If all the p_paddr fields are zero, we ignore them, since | |
858 | some ELF linkers produce such output. */ | |
859 | phdr = elf_tdata (abfd)->phdr; | |
860 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
861 | { | |
862 | if (phdr->p_paddr != 0) | |
863 | break; | |
864 | } | |
865 | if (i < elf_elfheader (abfd)->e_phnum) | |
866 | { | |
867 | phdr = elf_tdata (abfd)->phdr; | |
868 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
869 | { | |
e0e8c97f NC |
870 | /* This section is part of this segment if its file |
871 | offset plus size lies within the segment's memory | |
872 | span and, if the section is loaded, the extent of the | |
47d9a591 | 873 | loaded data lies within the extent of the segment. |
bf36db18 NC |
874 | |
875 | Note - we used to check the p_paddr field as well, and | |
876 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 877 | though, as a perfectly valid initialised segment can |
bf36db18 | 878 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 879 | place special significance on the address 0 and |
bf36db18 NC |
880 | executables need to be able to have a segment which |
881 | covers this address. */ | |
252b5132 | 882 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
883 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
884 | && (hdr->sh_offset + hdr->sh_size | |
885 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 886 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
887 | || (hdr->sh_offset + hdr->sh_size |
888 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 889 | { |
dba143ef | 890 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
891 | newsect->lma = (phdr->p_paddr |
892 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
893 | else |
894 | /* We used to use the same adjustment for SEC_LOAD | |
895 | sections, but that doesn't work if the segment | |
896 | is packed with code from multiple VMAs. | |
897 | Instead we calculate the section LMA based on | |
898 | the segment LMA. It is assumed that the | |
899 | segment will contain sections with contiguous | |
900 | LMAs, even if the VMAs are not. */ | |
901 | newsect->lma = (phdr->p_paddr | |
902 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
903 | |
904 | /* With contiguous segments, we can't tell from file | |
905 | offsets whether a section with zero size should | |
906 | be placed at the end of one segment or the | |
907 | beginning of the next. Decide based on vaddr. */ | |
908 | if (hdr->sh_addr >= phdr->p_vaddr | |
909 | && (hdr->sh_addr + hdr->sh_size | |
910 | <= phdr->p_vaddr + phdr->p_memsz)) | |
911 | break; | |
252b5132 RH |
912 | } |
913 | } | |
914 | } | |
915 | } | |
916 | ||
b34976b6 | 917 | return TRUE; |
252b5132 RH |
918 | } |
919 | ||
920 | /* | |
921 | INTERNAL_FUNCTION | |
922 | bfd_elf_find_section | |
923 | ||
924 | SYNOPSIS | |
925 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
926 | ||
927 | DESCRIPTION | |
928 | Helper functions for GDB to locate the string tables. | |
929 | Since BFD hides string tables from callers, GDB needs to use an | |
930 | internal hook to find them. Sun's .stabstr, in particular, | |
931 | isn't even pointed to by the .stab section, so ordinary | |
932 | mechanisms wouldn't work to find it, even if we had some. | |
933 | */ | |
934 | ||
935 | struct elf_internal_shdr * | |
217aa764 | 936 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
937 | { |
938 | Elf_Internal_Shdr **i_shdrp; | |
939 | char *shstrtab; | |
940 | unsigned int max; | |
941 | unsigned int i; | |
942 | ||
943 | i_shdrp = elf_elfsections (abfd); | |
944 | if (i_shdrp != NULL) | |
945 | { | |
9ad5cbcf AM |
946 | shstrtab = bfd_elf_get_str_section (abfd, |
947 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
948 | if (shstrtab != NULL) |
949 | { | |
9ad5cbcf | 950 | max = elf_numsections (abfd); |
252b5132 RH |
951 | for (i = 1; i < max; i++) |
952 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
953 | return i_shdrp[i]; | |
954 | } | |
955 | } | |
956 | return 0; | |
957 | } | |
958 | ||
959 | const char *const bfd_elf_section_type_names[] = { | |
960 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
961 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
962 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
963 | }; | |
964 | ||
1049f94e | 965 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
966 | output, and the reloc is against an external symbol, and nothing |
967 | has given us any additional addend, the resulting reloc will also | |
968 | be against the same symbol. In such a case, we don't want to | |
969 | change anything about the way the reloc is handled, since it will | |
970 | all be done at final link time. Rather than put special case code | |
971 | into bfd_perform_relocation, all the reloc types use this howto | |
972 | function. It just short circuits the reloc if producing | |
1049f94e | 973 | relocatable output against an external symbol. */ |
252b5132 | 974 | |
252b5132 | 975 | bfd_reloc_status_type |
217aa764 AM |
976 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
977 | arelent *reloc_entry, | |
978 | asymbol *symbol, | |
979 | void *data ATTRIBUTE_UNUSED, | |
980 | asection *input_section, | |
981 | bfd *output_bfd, | |
982 | char **error_message ATTRIBUTE_UNUSED) | |
983 | { | |
984 | if (output_bfd != NULL | |
252b5132 RH |
985 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
986 | && (! reloc_entry->howto->partial_inplace | |
987 | || reloc_entry->addend == 0)) | |
988 | { | |
989 | reloc_entry->address += input_section->output_offset; | |
990 | return bfd_reloc_ok; | |
991 | } | |
992 | ||
993 | return bfd_reloc_continue; | |
994 | } | |
995 | \f | |
d3c456e9 JJ |
996 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
997 | ||
998 | static void | |
217aa764 AM |
999 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
1000 | asection *sec) | |
d3c456e9 | 1001 | { |
68bfbfcc AM |
1002 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
1003 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
1004 | } |
1005 | ||
8550eb6e JJ |
1006 | /* Finish SHF_MERGE section merging. */ |
1007 | ||
b34976b6 | 1008 | bfd_boolean |
217aa764 | 1009 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 1010 | { |
57ceae94 AM |
1011 | bfd *ibfd; |
1012 | asection *sec; | |
1013 | ||
0eddce27 | 1014 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 1015 | return FALSE; |
57ceae94 AM |
1016 | |
1017 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
1018 | if ((ibfd->flags & DYNAMIC) == 0) | |
1019 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
1020 | if ((sec->flags & SEC_MERGE) != 0 | |
1021 | && !bfd_is_abs_section (sec->output_section)) | |
1022 | { | |
1023 | struct bfd_elf_section_data *secdata; | |
1024 | ||
1025 | secdata = elf_section_data (sec); | |
1026 | if (! _bfd_add_merge_section (abfd, | |
1027 | &elf_hash_table (info)->merge_info, | |
1028 | sec, &secdata->sec_info)) | |
1029 | return FALSE; | |
1030 | else if (secdata->sec_info) | |
1031 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
1032 | } | |
1033 | ||
1034 | if (elf_hash_table (info)->merge_info != NULL) | |
1035 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 1036 | merge_sections_remove_hook); |
b34976b6 | 1037 | return TRUE; |
8550eb6e | 1038 | } |
2d653fc7 AM |
1039 | |
1040 | void | |
217aa764 | 1041 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1042 | { |
1043 | sec->output_section = bfd_abs_section_ptr; | |
1044 | sec->output_offset = sec->vma; | |
0eddce27 | 1045 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1046 | return; |
1047 | ||
68bfbfcc | 1048 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1049 | } |
8550eb6e | 1050 | \f |
0ac4564e L |
1051 | /* Copy the program header and other data from one object module to |
1052 | another. */ | |
252b5132 | 1053 | |
b34976b6 | 1054 | bfd_boolean |
217aa764 | 1055 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1056 | { |
1057 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1058 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1059 | return TRUE; |
2d502050 L |
1060 | |
1061 | BFD_ASSERT (!elf_flags_init (obfd) | |
1062 | || (elf_elfheader (obfd)->e_flags | |
1063 | == elf_elfheader (ibfd)->e_flags)); | |
1064 | ||
0ac4564e | 1065 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1066 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1067 | elf_flags_init (obfd) = TRUE; |
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; |
252b5132 RH |
1242 | } |
1243 | ||
1244 | fprintf (f, " %-11s ", name); | |
1245 | if (! stringp) | |
1246 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1247 | else | |
1248 | { | |
1249 | const char *string; | |
dc810e39 | 1250 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1251 | |
dc810e39 | 1252 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1253 | if (string == NULL) |
1254 | goto error_return; | |
1255 | fprintf (f, "%s", string); | |
1256 | } | |
1257 | fprintf (f, "\n"); | |
1258 | } | |
1259 | ||
1260 | free (dynbuf); | |
1261 | dynbuf = NULL; | |
1262 | } | |
1263 | ||
1264 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1265 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1266 | { | |
fc0e6df6 | 1267 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1268 | return FALSE; |
252b5132 RH |
1269 | } |
1270 | ||
1271 | if (elf_dynverdef (abfd) != 0) | |
1272 | { | |
1273 | Elf_Internal_Verdef *t; | |
1274 | ||
1275 | fprintf (f, _("\nVersion definitions:\n")); | |
1276 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1277 | { | |
1278 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1279 | t->vd_flags, t->vd_hash, |
1280 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1281 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1282 | { |
1283 | Elf_Internal_Verdaux *a; | |
1284 | ||
1285 | fprintf (f, "\t"); | |
1286 | for (a = t->vd_auxptr->vda_nextptr; | |
1287 | a != NULL; | |
1288 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1289 | fprintf (f, "%s ", |
1290 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1291 | fprintf (f, "\n"); |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | if (elf_dynverref (abfd) != 0) | |
1297 | { | |
1298 | Elf_Internal_Verneed *t; | |
1299 | ||
1300 | fprintf (f, _("\nVersion References:\n")); | |
1301 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1302 | { | |
1303 | Elf_Internal_Vernaux *a; | |
1304 | ||
d0fb9a8d JJ |
1305 | fprintf (f, _(" required from %s:\n"), |
1306 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1307 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1308 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1309 | a->vna_flags, a->vna_other, |
1310 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1311 | } |
1312 | } | |
1313 | ||
b34976b6 | 1314 | return TRUE; |
252b5132 RH |
1315 | |
1316 | error_return: | |
1317 | if (dynbuf != NULL) | |
1318 | free (dynbuf); | |
b34976b6 | 1319 | return FALSE; |
252b5132 RH |
1320 | } |
1321 | ||
1322 | /* Display ELF-specific fields of a symbol. */ | |
1323 | ||
1324 | void | |
217aa764 AM |
1325 | bfd_elf_print_symbol (bfd *abfd, |
1326 | void *filep, | |
1327 | asymbol *symbol, | |
1328 | bfd_print_symbol_type how) | |
252b5132 | 1329 | { |
217aa764 | 1330 | FILE *file = filep; |
252b5132 RH |
1331 | switch (how) |
1332 | { | |
1333 | case bfd_print_symbol_name: | |
1334 | fprintf (file, "%s", symbol->name); | |
1335 | break; | |
1336 | case bfd_print_symbol_more: | |
1337 | fprintf (file, "elf "); | |
60b89a18 | 1338 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1339 | fprintf (file, " %lx", (long) symbol->flags); |
1340 | break; | |
1341 | case bfd_print_symbol_all: | |
1342 | { | |
4e8a9624 AM |
1343 | const char *section_name; |
1344 | const char *name = NULL; | |
9c5bfbb7 | 1345 | const struct elf_backend_data *bed; |
7a13edea | 1346 | unsigned char st_other; |
dbb410c3 | 1347 | bfd_vma val; |
c044fabd | 1348 | |
252b5132 | 1349 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1350 | |
1351 | bed = get_elf_backend_data (abfd); | |
1352 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1353 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1354 | |
1355 | if (name == NULL) | |
1356 | { | |
7ee38065 | 1357 | name = symbol->name; |
217aa764 | 1358 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1359 | } |
1360 | ||
252b5132 RH |
1361 | fprintf (file, " %s\t", section_name); |
1362 | /* Print the "other" value for a symbol. For common symbols, | |
1363 | we've already printed the size; now print the alignment. | |
1364 | For other symbols, we have no specified alignment, and | |
1365 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1366 | if (bfd_is_com_section (symbol->section)) |
1367 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1368 | else | |
1369 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1370 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1371 | |
1372 | /* If we have version information, print it. */ | |
1373 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1374 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1375 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1376 | { | |
1377 | unsigned int vernum; | |
1378 | const char *version_string; | |
1379 | ||
1380 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1381 | ||
1382 | if (vernum == 0) | |
1383 | version_string = ""; | |
1384 | else if (vernum == 1) | |
1385 | version_string = "Base"; | |
1386 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1387 | version_string = | |
1388 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1389 | else | |
1390 | { | |
1391 | Elf_Internal_Verneed *t; | |
1392 | ||
1393 | version_string = ""; | |
1394 | for (t = elf_tdata (abfd)->verref; | |
1395 | t != NULL; | |
1396 | t = t->vn_nextref) | |
1397 | { | |
1398 | Elf_Internal_Vernaux *a; | |
1399 | ||
1400 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1401 | { | |
1402 | if (a->vna_other == vernum) | |
1403 | { | |
1404 | version_string = a->vna_nodename; | |
1405 | break; | |
1406 | } | |
1407 | } | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1412 | fprintf (file, " %-11s", version_string); | |
1413 | else | |
1414 | { | |
1415 | int i; | |
1416 | ||
1417 | fprintf (file, " (%s)", version_string); | |
1418 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1419 | putc (' ', file); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1424 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1425 | |
7a13edea NC |
1426 | switch (st_other) |
1427 | { | |
1428 | case 0: break; | |
1429 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1430 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1431 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1432 | default: | |
1433 | /* Some other non-defined flags are also present, so print | |
1434 | everything hex. */ | |
1435 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1436 | } | |
252b5132 | 1437 | |
587ff49e | 1438 | fprintf (file, " %s", name); |
252b5132 RH |
1439 | } |
1440 | break; | |
1441 | } | |
1442 | } | |
1443 | \f | |
1444 | /* Create an entry in an ELF linker hash table. */ | |
1445 | ||
1446 | struct bfd_hash_entry * | |
217aa764 AM |
1447 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1448 | struct bfd_hash_table *table, | |
1449 | const char *string) | |
252b5132 | 1450 | { |
252b5132 RH |
1451 | /* Allocate the structure if it has not already been allocated by a |
1452 | subclass. */ | |
51b64d56 AM |
1453 | if (entry == NULL) |
1454 | { | |
1455 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1456 | if (entry == NULL) | |
1457 | return entry; | |
1458 | } | |
252b5132 RH |
1459 | |
1460 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1461 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1462 | if (entry != NULL) | |
252b5132 | 1463 | { |
51b64d56 AM |
1464 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1465 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1466 | ||
252b5132 RH |
1467 | /* Set local fields. */ |
1468 | ret->indx = -1; | |
252b5132 | 1469 | ret->dynindx = -1; |
a6aa5195 AM |
1470 | ret->got = htab->init_got_refcount; |
1471 | ret->plt = htab->init_plt_refcount; | |
f6e332e6 AM |
1472 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) |
1473 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1474 | /* Assume that we have been called by a non-ELF symbol reader. |
1475 | This flag is then reset by the code which reads an ELF input | |
1476 | file. This ensures that a symbol created by a non-ELF symbol | |
1477 | reader will have the flag set correctly. */ | |
f5385ebf | 1478 | ret->non_elf = 1; |
252b5132 RH |
1479 | } |
1480 | ||
51b64d56 | 1481 | return entry; |
252b5132 RH |
1482 | } |
1483 | ||
2920b85c | 1484 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1485 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1486 | |
c61b8717 | 1487 | void |
fcfa13d2 | 1488 | _bfd_elf_link_hash_copy_indirect (struct bfd_link_info *info, |
217aa764 AM |
1489 | struct elf_link_hash_entry *dir, |
1490 | struct elf_link_hash_entry *ind) | |
2920b85c | 1491 | { |
fcfa13d2 | 1492 | struct elf_link_hash_table *htab; |
3c3e9281 | 1493 | |
2920b85c RH |
1494 | /* Copy down any references that we may have already seen to the |
1495 | symbol which just became indirect. */ | |
1496 | ||
f5385ebf AM |
1497 | dir->ref_dynamic |= ind->ref_dynamic; |
1498 | dir->ref_regular |= ind->ref_regular; | |
1499 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1500 | dir->non_got_ref |= ind->non_got_ref; | |
1501 | dir->needs_plt |= ind->needs_plt; | |
1502 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1503 | |
1e370bd2 | 1504 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1505 | return; |
1506 | ||
51b64d56 | 1507 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1508 | These may have been already set up by a check_relocs routine. */ |
fcfa13d2 AM |
1509 | htab = elf_hash_table (info); |
1510 | if (ind->got.refcount > htab->init_got_refcount.refcount) | |
2920b85c | 1511 | { |
fcfa13d2 AM |
1512 | if (dir->got.refcount < 0) |
1513 | dir->got.refcount = 0; | |
1514 | dir->got.refcount += ind->got.refcount; | |
1515 | ind->got.refcount = htab->init_got_refcount.refcount; | |
2920b85c | 1516 | } |
2920b85c | 1517 | |
fcfa13d2 | 1518 | if (ind->plt.refcount > htab->init_plt_refcount.refcount) |
2920b85c | 1519 | { |
fcfa13d2 AM |
1520 | if (dir->plt.refcount < 0) |
1521 | dir->plt.refcount = 0; | |
1522 | dir->plt.refcount += ind->plt.refcount; | |
1523 | ind->plt.refcount = htab->init_plt_refcount.refcount; | |
2920b85c | 1524 | } |
2920b85c | 1525 | |
fcfa13d2 | 1526 | if (ind->dynindx != -1) |
2920b85c | 1527 | { |
fcfa13d2 AM |
1528 | if (dir->dynindx != -1) |
1529 | _bfd_elf_strtab_delref (htab->dynstr, dir->dynstr_index); | |
2920b85c RH |
1530 | dir->dynindx = ind->dynindx; |
1531 | dir->dynstr_index = ind->dynstr_index; | |
1532 | ind->dynindx = -1; | |
1533 | ind->dynstr_index = 0; | |
1534 | } | |
2920b85c RH |
1535 | } |
1536 | ||
c61b8717 | 1537 | void |
217aa764 AM |
1538 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1539 | struct elf_link_hash_entry *h, | |
1540 | bfd_boolean force_local) | |
2920b85c | 1541 | { |
a6aa5195 | 1542 | h->plt = elf_hash_table (info)->init_plt_offset; |
f5385ebf | 1543 | h->needs_plt = 0; |
e5094212 AM |
1544 | if (force_local) |
1545 | { | |
f5385ebf | 1546 | h->forced_local = 1; |
e5094212 AM |
1547 | if (h->dynindx != -1) |
1548 | { | |
1549 | h->dynindx = -1; | |
1550 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1551 | h->dynstr_index); | |
1552 | } | |
1553 | } | |
2920b85c RH |
1554 | } |
1555 | ||
252b5132 RH |
1556 | /* Initialize an ELF linker hash table. */ |
1557 | ||
b34976b6 | 1558 | bfd_boolean |
217aa764 AM |
1559 | _bfd_elf_link_hash_table_init |
1560 | (struct elf_link_hash_table *table, | |
1561 | bfd *abfd, | |
1562 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1563 | struct bfd_hash_table *, | |
66eb6687 AM |
1564 | const char *), |
1565 | unsigned int entsize) | |
252b5132 | 1566 | { |
b34976b6 | 1567 | bfd_boolean ret; |
a6aa5195 | 1568 | int can_refcount = get_elf_backend_data (abfd)->can_refcount; |
8ea2e4bd | 1569 | |
b34976b6 | 1570 | table->dynamic_sections_created = FALSE; |
252b5132 | 1571 | table->dynobj = NULL; |
a6aa5195 AM |
1572 | table->init_got_refcount.refcount = can_refcount - 1; |
1573 | table->init_plt_refcount.refcount = can_refcount - 1; | |
1574 | table->init_got_offset.offset = -(bfd_vma) 1; | |
1575 | table->init_plt_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1576 | /* The first dynamic symbol is a dummy. */ |
1577 | table->dynsymcount = 1; | |
1578 | table->dynstr = NULL; | |
1579 | table->bucketcount = 0; | |
1580 | table->needed = NULL; | |
1581 | table->hgot = NULL; | |
f5fa8ca2 | 1582 | table->merge_info = NULL; |
3722b82f | 1583 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1584 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1585 | table->dynlocal = NULL; |
73722af0 | 1586 | table->runpath = NULL; |
e1918d23 AM |
1587 | table->tls_sec = NULL; |
1588 | table->tls_size = 0; | |
73722af0 | 1589 | table->loaded = NULL; |
67687978 | 1590 | table->is_relocatable_executable = FALSE; |
73722af0 | 1591 | |
66eb6687 | 1592 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
8ea2e4bd NC |
1593 | table->root.type = bfd_link_elf_hash_table; |
1594 | ||
1595 | return ret; | |
252b5132 RH |
1596 | } |
1597 | ||
1598 | /* Create an ELF linker hash table. */ | |
1599 | ||
1600 | struct bfd_link_hash_table * | |
217aa764 | 1601 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1602 | { |
1603 | struct elf_link_hash_table *ret; | |
dc810e39 | 1604 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1605 | |
217aa764 AM |
1606 | ret = bfd_malloc (amt); |
1607 | if (ret == NULL) | |
252b5132 RH |
1608 | return NULL; |
1609 | ||
66eb6687 AM |
1610 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc, |
1611 | sizeof (struct elf_link_hash_entry))) | |
252b5132 | 1612 | { |
e2d34d7d | 1613 | free (ret); |
252b5132 RH |
1614 | return NULL; |
1615 | } | |
1616 | ||
1617 | return &ret->root; | |
1618 | } | |
1619 | ||
1620 | /* This is a hook for the ELF emulation code in the generic linker to | |
1621 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1622 | entry for a dynamic object. */ |
252b5132 RH |
1623 | |
1624 | void | |
217aa764 | 1625 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1626 | { |
1627 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1628 | && bfd_get_format (abfd) == bfd_object) | |
1629 | elf_dt_name (abfd) = name; | |
1630 | } | |
1631 | ||
e56f61be L |
1632 | int |
1633 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1634 | { | |
1635 | int lib_class; | |
1636 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1637 | && bfd_get_format (abfd) == bfd_object) | |
1638 | lib_class = elf_dyn_lib_class (abfd); | |
1639 | else | |
1640 | lib_class = 0; | |
1641 | return lib_class; | |
1642 | } | |
1643 | ||
74816898 | 1644 | void |
4a43e768 | 1645 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1646 | { |
1647 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1648 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1649 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1650 | } |
1651 | ||
252b5132 RH |
1652 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1653 | the linker ELF emulation code. */ | |
1654 | ||
1655 | struct bfd_link_needed_list * | |
217aa764 AM |
1656 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1657 | struct bfd_link_info *info) | |
252b5132 | 1658 | { |
0eddce27 | 1659 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1660 | return NULL; |
1661 | return elf_hash_table (info)->needed; | |
1662 | } | |
1663 | ||
a963dc6a L |
1664 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1665 | hook for the linker ELF emulation code. */ | |
1666 | ||
1667 | struct bfd_link_needed_list * | |
217aa764 AM |
1668 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1669 | struct bfd_link_info *info) | |
a963dc6a | 1670 | { |
0eddce27 | 1671 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1672 | return NULL; |
1673 | return elf_hash_table (info)->runpath; | |
1674 | } | |
1675 | ||
252b5132 RH |
1676 | /* Get the name actually used for a dynamic object for a link. This |
1677 | is the SONAME entry if there is one. Otherwise, it is the string | |
1678 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1679 | ||
1680 | const char * | |
217aa764 | 1681 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1682 | { |
1683 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1684 | && bfd_get_format (abfd) == bfd_object) | |
1685 | return elf_dt_name (abfd); | |
1686 | return NULL; | |
1687 | } | |
1688 | ||
1689 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1690 | the ELF linker emulation code. */ | |
1691 | ||
b34976b6 | 1692 | bfd_boolean |
217aa764 AM |
1693 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1694 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1695 | { |
1696 | asection *s; | |
1697 | bfd_byte *dynbuf = NULL; | |
1698 | int elfsec; | |
dc810e39 | 1699 | unsigned long shlink; |
252b5132 RH |
1700 | bfd_byte *extdyn, *extdynend; |
1701 | size_t extdynsize; | |
217aa764 | 1702 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1703 | |
1704 | *pneeded = NULL; | |
1705 | ||
1706 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1707 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1708 | return TRUE; |
252b5132 RH |
1709 | |
1710 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1711 | if (s == NULL || s->size == 0) |
b34976b6 | 1712 | return TRUE; |
252b5132 | 1713 | |
eea6121a | 1714 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1715 | goto error_return; |
1716 | ||
1717 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1718 | if (elfsec == -1) | |
1719 | goto error_return; | |
1720 | ||
dc810e39 | 1721 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1722 | |
1723 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1724 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1725 | ||
1726 | extdyn = dynbuf; | |
eea6121a | 1727 | extdynend = extdyn + s->size; |
252b5132 RH |
1728 | for (; extdyn < extdynend; extdyn += extdynsize) |
1729 | { | |
1730 | Elf_Internal_Dyn dyn; | |
1731 | ||
217aa764 | 1732 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1733 | |
1734 | if (dyn.d_tag == DT_NULL) | |
1735 | break; | |
1736 | ||
1737 | if (dyn.d_tag == DT_NEEDED) | |
1738 | { | |
1739 | const char *string; | |
1740 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1741 | unsigned int tagv = dyn.d_un.d_val; |
1742 | bfd_size_type amt; | |
252b5132 | 1743 | |
dc810e39 | 1744 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1745 | if (string == NULL) |
1746 | goto error_return; | |
1747 | ||
dc810e39 | 1748 | amt = sizeof *l; |
217aa764 | 1749 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1750 | if (l == NULL) |
1751 | goto error_return; | |
1752 | ||
1753 | l->by = abfd; | |
1754 | l->name = string; | |
1755 | l->next = *pneeded; | |
1756 | *pneeded = l; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | free (dynbuf); | |
1761 | ||
b34976b6 | 1762 | return TRUE; |
252b5132 RH |
1763 | |
1764 | error_return: | |
1765 | if (dynbuf != NULL) | |
1766 | free (dynbuf); | |
b34976b6 | 1767 | return FALSE; |
252b5132 RH |
1768 | } |
1769 | \f | |
1770 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1771 | ||
1772 | struct bfd_strtab_hash * | |
217aa764 | 1773 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1774 | { |
1775 | struct bfd_strtab_hash *ret; | |
1776 | ||
1777 | ret = _bfd_stringtab_init (); | |
1778 | if (ret != NULL) | |
1779 | { | |
1780 | bfd_size_type loc; | |
1781 | ||
b34976b6 | 1782 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1783 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1784 | if (loc == (bfd_size_type) -1) | |
1785 | { | |
1786 | _bfd_stringtab_free (ret); | |
1787 | ret = NULL; | |
1788 | } | |
1789 | } | |
1790 | return ret; | |
1791 | } | |
1792 | \f | |
1793 | /* ELF .o/exec file reading */ | |
1794 | ||
c044fabd | 1795 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1796 | |
b34976b6 | 1797 | bfd_boolean |
217aa764 | 1798 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1799 | { |
1800 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1801 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1802 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1803 | const char *name; |
252b5132 | 1804 | |
1b3a8575 AM |
1805 | name = bfd_elf_string_from_elf_section (abfd, |
1806 | elf_elfheader (abfd)->e_shstrndx, | |
1807 | hdr->sh_name); | |
933d961a JJ |
1808 | if (name == NULL) |
1809 | return FALSE; | |
252b5132 RH |
1810 | |
1811 | switch (hdr->sh_type) | |
1812 | { | |
1813 | case SHT_NULL: | |
1814 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1815 | return TRUE; |
252b5132 RH |
1816 | |
1817 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1818 | case SHT_NOBITS: /* .bss section. */ |
1819 | case SHT_HASH: /* .hash section. */ | |
1820 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1821 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1822 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1823 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1824 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
6dc132d9 | 1825 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1826 | |
797fc050 | 1827 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1828 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1829 | return FALSE; |
8e0ed13f NC |
1830 | if (hdr->sh_link > elf_numsections (abfd) |
1831 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1832 | return FALSE; | |
797fc050 AM |
1833 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1834 | { | |
1835 | Elf_Internal_Shdr *dynsymhdr; | |
1836 | ||
1837 | /* The shared libraries distributed with hpux11 have a bogus | |
1838 | sh_link field for the ".dynamic" section. Find the | |
1839 | string table for the ".dynsym" section instead. */ | |
1840 | if (elf_dynsymtab (abfd) != 0) | |
1841 | { | |
1842 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1843 | hdr->sh_link = dynsymhdr->sh_link; | |
1844 | } | |
1845 | else | |
1846 | { | |
1847 | unsigned int i, num_sec; | |
1848 | ||
1849 | num_sec = elf_numsections (abfd); | |
1850 | for (i = 1; i < num_sec; i++) | |
1851 | { | |
1852 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1853 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1854 | { | |
1855 | hdr->sh_link = dynsymhdr->sh_link; | |
1856 | break; | |
1857 | } | |
1858 | } | |
1859 | } | |
1860 | } | |
1861 | break; | |
1862 | ||
252b5132 RH |
1863 | case SHT_SYMTAB: /* A symbol table */ |
1864 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1865 | return TRUE; |
252b5132 | 1866 | |
a50b2160 JJ |
1867 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1868 | return FALSE; | |
252b5132 RH |
1869 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1870 | elf_onesymtab (abfd) = shindex; | |
1871 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1872 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1873 | abfd->flags |= HAS_SYMS; | |
1874 | ||
1875 | /* Sometimes a shared object will map in the symbol table. If | |
1876 | SHF_ALLOC is set, and this is a shared object, then we also | |
1877 | treat this section as a BFD section. We can not base the | |
1878 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1879 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1880 | linker. */ |
1881 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1882 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1883 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1884 | shindex)) | |
b34976b6 | 1885 | return FALSE; |
252b5132 | 1886 | |
1b3a8575 AM |
1887 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1888 | can't read symbols without that section loaded as well. It | |
1889 | is most likely specified by the next section header. */ | |
1890 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1891 | { | |
1892 | unsigned int i, num_sec; | |
1893 | ||
1894 | num_sec = elf_numsections (abfd); | |
1895 | for (i = shindex + 1; i < num_sec; i++) | |
1896 | { | |
1897 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1898 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1899 | && hdr2->sh_link == shindex) | |
1900 | break; | |
1901 | } | |
1902 | if (i == num_sec) | |
1903 | for (i = 1; i < shindex; i++) | |
1904 | { | |
1905 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1906 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1907 | && hdr2->sh_link == shindex) | |
1908 | break; | |
1909 | } | |
1910 | if (i != shindex) | |
1911 | return bfd_section_from_shdr (abfd, i); | |
1912 | } | |
b34976b6 | 1913 | return TRUE; |
252b5132 RH |
1914 | |
1915 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1916 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1917 | return TRUE; |
252b5132 | 1918 | |
a50b2160 JJ |
1919 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1920 | return FALSE; | |
252b5132 RH |
1921 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1922 | elf_dynsymtab (abfd) = shindex; | |
1923 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1924 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1925 | abfd->flags |= HAS_SYMS; | |
1926 | ||
1927 | /* Besides being a symbol table, we also treat this as a regular | |
1928 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1929 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1930 | |
9ad5cbcf AM |
1931 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1932 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1933 | return TRUE; |
9ad5cbcf | 1934 | |
1b3a8575 | 1935 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1936 | elf_symtab_shndx (abfd) = shindex; |
1937 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1938 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1939 | return TRUE; |
9ad5cbcf | 1940 | |
252b5132 RH |
1941 | case SHT_STRTAB: /* A string table */ |
1942 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1943 | return TRUE; |
252b5132 RH |
1944 | if (ehdr->e_shstrndx == shindex) |
1945 | { | |
1946 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1947 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1948 | return TRUE; |
252b5132 | 1949 | } |
1b3a8575 AM |
1950 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1951 | { | |
1952 | symtab_strtab: | |
1953 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1954 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1955 | return TRUE; | |
1956 | } | |
1957 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1958 | { | |
1959 | dynsymtab_strtab: | |
1960 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1961 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1962 | elf_elfsections (abfd)[shindex] = hdr; | |
1963 | /* We also treat this as a regular section, so that objcopy | |
1964 | can handle it. */ | |
6dc132d9 L |
1965 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1966 | shindex); | |
1b3a8575 | 1967 | } |
252b5132 | 1968 | |
1b3a8575 AM |
1969 | /* If the string table isn't one of the above, then treat it as a |
1970 | regular section. We need to scan all the headers to be sure, | |
1971 | just in case this strtab section appeared before the above. */ | |
1972 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1973 | { | |
1974 | unsigned int i, num_sec; | |
252b5132 | 1975 | |
1b3a8575 AM |
1976 | num_sec = elf_numsections (abfd); |
1977 | for (i = 1; i < num_sec; i++) | |
1978 | { | |
1979 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1980 | if (hdr2->sh_link == shindex) | |
1981 | { | |
933d961a JJ |
1982 | /* Prevent endless recursion on broken objects. */ |
1983 | if (i == shindex) | |
1984 | return FALSE; | |
1b3a8575 AM |
1985 | if (! bfd_section_from_shdr (abfd, i)) |
1986 | return FALSE; | |
1987 | if (elf_onesymtab (abfd) == i) | |
1988 | goto symtab_strtab; | |
1989 | if (elf_dynsymtab (abfd) == i) | |
1990 | goto dynsymtab_strtab; | |
1991 | } | |
1992 | } | |
1993 | } | |
6dc132d9 | 1994 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1995 | |
1996 | case SHT_REL: | |
1997 | case SHT_RELA: | |
1998 | /* *These* do a lot of work -- but build no sections! */ | |
1999 | { | |
2000 | asection *target_sect; | |
2001 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 2002 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 2003 | |
aa2ca951 JJ |
2004 | if (hdr->sh_entsize |
2005 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
2006 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
2007 | return FALSE; | |
2008 | ||
03ae5f59 | 2009 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
2010 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
2011 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
2012 | { |
2013 | ((*_bfd_error_handler) | |
d003868e AM |
2014 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
2015 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
2016 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2017 | shindex); | |
03ae5f59 ILT |
2018 | } |
2019 | ||
252b5132 RH |
2020 | /* For some incomprehensible reason Oracle distributes |
2021 | libraries for Solaris in which some of the objects have | |
2022 | bogus sh_link fields. It would be nice if we could just | |
2023 | reject them, but, unfortunately, some people need to use | |
2024 | them. We scan through the section headers; if we find only | |
2025 | one suitable symbol table, we clobber the sh_link to point | |
2026 | to it. I hope this doesn't break anything. */ | |
2027 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
2028 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
2029 | { | |
9ad5cbcf | 2030 | unsigned int scan; |
252b5132 RH |
2031 | int found; |
2032 | ||
2033 | found = 0; | |
9ad5cbcf | 2034 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
2035 | { |
2036 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
2037 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
2038 | { | |
2039 | if (found != 0) | |
2040 | { | |
2041 | found = 0; | |
2042 | break; | |
2043 | } | |
2044 | found = scan; | |
2045 | } | |
2046 | } | |
2047 | if (found != 0) | |
2048 | hdr->sh_link = found; | |
2049 | } | |
2050 | ||
2051 | /* Get the symbol table. */ | |
1b3a8575 AM |
2052 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
2053 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2054 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 2055 | return FALSE; |
252b5132 RH |
2056 | |
2057 | /* If this reloc section does not use the main symbol table we | |
2058 | don't treat it as a reloc section. BFD can't adequately | |
2059 | represent such a section, so at least for now, we don't | |
c044fabd | 2060 | try. We just present it as a normal section. We also |
60bcf0fa | 2061 | can't use it as a reloc section if it points to the null |
185ef66d AM |
2062 | section, an invalid section, or another reloc section. */ |
2063 | if (hdr->sh_link != elf_onesymtab (abfd) | |
2064 | || hdr->sh_info == SHN_UNDEF | |
2065 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
2066 | || hdr->sh_info >= num_sec | |
2067 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2068 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
2069 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2070 | shindex); | |
252b5132 RH |
2071 | |
2072 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2073 | return FALSE; |
252b5132 RH |
2074 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2075 | if (target_sect == NULL) | |
b34976b6 | 2076 | return FALSE; |
252b5132 RH |
2077 | |
2078 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2079 | || target_sect->reloc_count == 0) | |
2080 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2081 | else | |
2082 | { | |
dc810e39 | 2083 | bfd_size_type amt; |
252b5132 | 2084 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2085 | amt = sizeof (*hdr2); |
217aa764 | 2086 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2087 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2088 | } | |
2089 | *hdr2 = *hdr; | |
2090 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2091 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2092 | target_sect->flags |= SEC_RELOC; |
2093 | target_sect->relocation = NULL; | |
2094 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2095 | /* In the section to which the relocations apply, mark whether |
2096 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2097 | if (hdr->sh_size != 0) |
68bfbfcc | 2098 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2099 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2100 | return TRUE; |
252b5132 RH |
2101 | } |
2102 | break; | |
2103 | ||
2104 | case SHT_GNU_verdef: | |
2105 | elf_dynverdef (abfd) = shindex; | |
2106 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2107 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2108 | break; |
2109 | ||
2110 | case SHT_GNU_versym: | |
a50b2160 JJ |
2111 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
2112 | return FALSE; | |
252b5132 RH |
2113 | elf_dynversym (abfd) = shindex; |
2114 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2115 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2116 | break; |
2117 | ||
2118 | case SHT_GNU_verneed: | |
2119 | elf_dynverref (abfd) = shindex; | |
2120 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2121 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2122 | break; |
2123 | ||
2124 | case SHT_SHLIB: | |
b34976b6 | 2125 | return TRUE; |
252b5132 | 2126 | |
dbb410c3 | 2127 | case SHT_GROUP: |
b885599b AM |
2128 | /* We need a BFD section for objcopy and relocatable linking, |
2129 | and it's handy to have the signature available as the section | |
2130 | name. */ | |
a50b2160 JJ |
2131 | if (hdr->sh_entsize != GRP_ENTRY_SIZE) |
2132 | return FALSE; | |
b885599b AM |
2133 | name = group_signature (abfd, hdr); |
2134 | if (name == NULL) | |
b34976b6 | 2135 | return FALSE; |
6dc132d9 | 2136 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2137 | return FALSE; |
dbb410c3 AM |
2138 | if (hdr->contents != NULL) |
2139 | { | |
2140 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2141 | unsigned int n_elt = hdr->sh_size / 4; | |
2142 | asection *s; | |
2143 | ||
b885599b AM |
2144 | if (idx->flags & GRP_COMDAT) |
2145 | hdr->bfd_section->flags | |
2146 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2147 | ||
45c5e9ed L |
2148 | /* We try to keep the same section order as it comes in. */ |
2149 | idx += n_elt; | |
dbb410c3 | 2150 | while (--n_elt != 0) |
45c5e9ed | 2151 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2152 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2153 | { |
945906ff | 2154 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2155 | break; |
2156 | } | |
2157 | } | |
2158 | break; | |
2159 | ||
252b5132 RH |
2160 | default: |
2161 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2162 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2163 | shindex); | |
252b5132 RH |
2164 | } |
2165 | ||
b34976b6 | 2166 | return TRUE; |
252b5132 RH |
2167 | } |
2168 | ||
ec338859 AM |
2169 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2170 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2171 | ||
2172 | asection * | |
217aa764 AM |
2173 | bfd_section_from_r_symndx (bfd *abfd, |
2174 | struct sym_sec_cache *cache, | |
2175 | asection *sec, | |
2176 | unsigned long r_symndx) | |
ec338859 | 2177 | { |
ec338859 | 2178 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2179 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2180 | Elf_External_Sym_Shndx eshndx; | |
2181 | Elf_Internal_Sym isym; | |
ec338859 AM |
2182 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2183 | ||
2184 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2185 | return cache->sec[ent]; | |
2186 | ||
2187 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2188 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2189 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2190 | return NULL; |
9ad5cbcf | 2191 | |
ec338859 AM |
2192 | if (cache->abfd != abfd) |
2193 | { | |
2194 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2195 | cache->abfd = abfd; | |
2196 | } | |
2197 | cache->indx[ent] = r_symndx; | |
2198 | cache->sec[ent] = sec; | |
50bc7936 AM |
2199 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2200 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2201 | { |
2202 | asection *s; | |
6cdc0ccc | 2203 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2204 | if (s != NULL) |
2205 | cache->sec[ent] = s; | |
2206 | } | |
2207 | return cache->sec[ent]; | |
2208 | } | |
2209 | ||
252b5132 RH |
2210 | /* Given an ELF section number, retrieve the corresponding BFD |
2211 | section. */ | |
2212 | ||
2213 | asection * | |
217aa764 | 2214 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2215 | { |
9ad5cbcf | 2216 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2217 | return NULL; |
2218 | return elf_elfsections (abfd)[index]->bfd_section; | |
2219 | } | |
2220 | ||
b35d266b | 2221 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2222 | { |
7dcb9820 | 2223 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7f4d3958 L |
2224 | { NULL, 0, 0, 0, 0 } |
2225 | }; | |
2226 | ||
b35d266b | 2227 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2228 | { |
7dcb9820 | 2229 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
7f4d3958 L |
2230 | { NULL, 0, 0, 0, 0 } |
2231 | }; | |
2232 | ||
b35d266b | 2233 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2234 | { |
7dcb9820 AM |
2235 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2236 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2237 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
7dcb9820 AM |
2238 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, |
2239 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2240 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2241 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2242 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2243 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2244 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
7f4d3958 L |
2245 | { NULL, 0, 0, 0, 0 } |
2246 | }; | |
2247 | ||
b35d266b | 2248 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 L |
2249 | { |
2250 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2251 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2252 | { NULL, 0, 0, 0, 0 } | |
2253 | }; | |
2254 | ||
b35d266b | 2255 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 L |
2256 | { |
2257 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7dcb9820 | 2258 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2259 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, |
2260 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2261 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
7f4d3958 L |
2262 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2263 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
2264 | { NULL, 0, 0, 0, 0 } | |
2265 | }; | |
2266 | ||
b35d266b | 2267 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 L |
2268 | { |
2269 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2270 | { NULL, 0, 0, 0, 0 } | |
2271 | }; | |
2272 | ||
b35d266b | 2273 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 L |
2274 | { |
2275 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2276 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2277 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2278 | { NULL, 0, 0, 0, 0 } | |
2279 | }; | |
2280 | ||
b35d266b | 2281 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 L |
2282 | { |
2283 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2284 | { NULL, 0, 0, 0, 0 } | |
2285 | }; | |
2286 | ||
b35d266b | 2287 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2288 | { |
45c5e9ed | 2289 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 | 2290 | { ".note", 5, -1, SHT_NOTE, 0 }, |
7f4d3958 L |
2291 | { NULL, 0, 0, 0, 0 } |
2292 | }; | |
2293 | ||
b35d266b | 2294 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 L |
2295 | { |
2296 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2297 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2298 | { NULL, 0, 0, 0, 0 } | |
2299 | }; | |
2300 | ||
b35d266b | 2301 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 L |
2302 | { |
2303 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2304 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
7dcb9820 AM |
2305 | { ".rela", 5, -1, SHT_RELA, 0 }, |
2306 | { ".rel", 4, -1, SHT_REL, 0 }, | |
7f4d3958 L |
2307 | { NULL, 0, 0, 0, 0 } |
2308 | }; | |
2309 | ||
b35d266b | 2310 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 L |
2311 | { |
2312 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2313 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2314 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
7dcb9820 AM |
2315 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, |
2316 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2317 | }; |
2318 | ||
b35d266b | 2319 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 L |
2320 | { |
2321 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2322 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2323 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2324 | { NULL, 0, 0, 0, 0 } | |
2325 | }; | |
2326 | ||
b35d266b | 2327 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2328 | { |
7f4d3958 L |
2329 | special_sections_b, /* 'b' */ |
2330 | special_sections_c, /* 'b' */ | |
2331 | special_sections_d, /* 'd' */ | |
2332 | NULL, /* 'e' */ | |
2333 | special_sections_f, /* 'f' */ | |
2334 | special_sections_g, /* 'g' */ | |
2335 | special_sections_h, /* 'h' */ | |
2336 | special_sections_i, /* 'i' */ | |
2337 | NULL, /* 'j' */ | |
2338 | NULL, /* 'k' */ | |
2339 | special_sections_l, /* 'l' */ | |
2340 | NULL, /* 'm' */ | |
2341 | special_sections_n, /* 'n' */ | |
2342 | NULL, /* 'o' */ | |
2343 | special_sections_p, /* 'p' */ | |
2344 | NULL, /* 'q' */ | |
2345 | special_sections_r, /* 'r' */ | |
2346 | special_sections_s, /* 's' */ | |
2347 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2348 | }; |
2349 | ||
551b43fd AM |
2350 | const struct bfd_elf_special_section * |
2351 | _bfd_elf_get_special_section (const char *name, | |
2352 | const struct bfd_elf_special_section *spec, | |
2353 | unsigned int rela) | |
2f89ff8d L |
2354 | { |
2355 | int i; | |
7f4d3958 | 2356 | int len; |
7f4d3958 | 2357 | |
551b43fd | 2358 | len = strlen (name); |
7f4d3958 | 2359 | |
551b43fd | 2360 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2361 | { |
2362 | int suffix_len; | |
551b43fd | 2363 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2364 | |
2365 | if (len < prefix_len) | |
2366 | continue; | |
551b43fd | 2367 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2368 | continue; |
2369 | ||
551b43fd | 2370 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2371 | if (suffix_len <= 0) |
2372 | { | |
2373 | if (name[prefix_len] != 0) | |
2374 | { | |
2375 | if (suffix_len == 0) | |
2376 | continue; | |
2377 | if (name[prefix_len] != '.' | |
2378 | && (suffix_len == -2 | |
551b43fd | 2379 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2380 | continue; |
2381 | } | |
2382 | } | |
2383 | else | |
2384 | { | |
2385 | if (len < prefix_len + suffix_len) | |
2386 | continue; | |
2387 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2388 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2389 | suffix_len) != 0) |
2390 | continue; | |
2391 | } | |
551b43fd | 2392 | return &spec[i]; |
7dcb9820 | 2393 | } |
2f89ff8d L |
2394 | |
2395 | return NULL; | |
2396 | } | |
2397 | ||
7dcb9820 | 2398 | const struct bfd_elf_special_section * |
29ef7005 | 2399 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2400 | { |
551b43fd AM |
2401 | int i; |
2402 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2403 | const struct elf_backend_data *bed; |
2f89ff8d L |
2404 | |
2405 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2406 | if (sec->name == NULL) |
2407 | return NULL; | |
2f89ff8d | 2408 | |
29ef7005 L |
2409 | bed = get_elf_backend_data (abfd); |
2410 | spec = bed->special_sections; | |
2411 | if (spec) | |
2412 | { | |
2413 | spec = _bfd_elf_get_special_section (sec->name, | |
2414 | bed->special_sections, | |
2415 | sec->use_rela_p); | |
2416 | if (spec != NULL) | |
2417 | return spec; | |
2418 | } | |
2419 | ||
551b43fd AM |
2420 | if (sec->name[0] != '.') |
2421 | return NULL; | |
2f89ff8d | 2422 | |
551b43fd AM |
2423 | i = sec->name[1] - 'b'; |
2424 | if (i < 0 || i > 't' - 'b') | |
2425 | return NULL; | |
2426 | ||
2427 | spec = special_sections[i]; | |
2f89ff8d | 2428 | |
551b43fd AM |
2429 | if (spec == NULL) |
2430 | return NULL; | |
2431 | ||
2432 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2433 | } |
2434 | ||
b34976b6 | 2435 | bfd_boolean |
217aa764 | 2436 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2437 | { |
2438 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2439 | const struct elf_backend_data *bed; |
7dcb9820 | 2440 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2441 | |
f0abc2a1 AM |
2442 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2443 | if (sdata == NULL) | |
2444 | { | |
217aa764 | 2445 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2446 | if (sdata == NULL) |
2447 | return FALSE; | |
217aa764 | 2448 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2449 | } |
bf572ba0 | 2450 | |
551b43fd AM |
2451 | /* Indicate whether or not this section should use RELA relocations. */ |
2452 | bed = get_elf_backend_data (abfd); | |
2453 | sec->use_rela_p = bed->default_use_rela_p; | |
2454 | ||
3496cb2a L |
2455 | /* When we read a file, we don't need section type and flags unless |
2456 | it is a linker created section. They will be overridden in | |
2457 | _bfd_elf_make_section_from_shdr anyway. */ | |
2458 | if (abfd->direction != read_direction | |
2459 | || (sec->flags & SEC_LINKER_CREATED) != 0) | |
2f89ff8d | 2460 | { |
551b43fd | 2461 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2462 | if (ssect != NULL) |
2463 | { | |
2464 | elf_section_type (sec) = ssect->type; | |
2465 | elf_section_flags (sec) = ssect->attr; | |
2466 | } | |
2f89ff8d L |
2467 | } |
2468 | ||
b34976b6 | 2469 | return TRUE; |
252b5132 RH |
2470 | } |
2471 | ||
2472 | /* Create a new bfd section from an ELF program header. | |
2473 | ||
2474 | Since program segments have no names, we generate a synthetic name | |
2475 | of the form segment<NUM>, where NUM is generally the index in the | |
2476 | program header table. For segments that are split (see below) we | |
2477 | generate the names segment<NUM>a and segment<NUM>b. | |
2478 | ||
2479 | Note that some program segments may have a file size that is different than | |
2480 | (less than) the memory size. All this means is that at execution the | |
2481 | system must allocate the amount of memory specified by the memory size, | |
2482 | but only initialize it with the first "file size" bytes read from the | |
2483 | file. This would occur for example, with program segments consisting | |
2484 | of combined data+bss. | |
2485 | ||
2486 | To handle the above situation, this routine generates TWO bfd sections | |
2487 | for the single program segment. The first has the length specified by | |
2488 | the file size of the segment, and the second has the length specified | |
2489 | by the difference between the two sizes. In effect, the segment is split | |
2490 | into it's initialized and uninitialized parts. | |
2491 | ||
2492 | */ | |
2493 | ||
b34976b6 | 2494 | bfd_boolean |
217aa764 AM |
2495 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2496 | Elf_Internal_Phdr *hdr, | |
2497 | int index, | |
2498 | const char *typename) | |
252b5132 RH |
2499 | { |
2500 | asection *newsect; | |
2501 | char *name; | |
2502 | char namebuf[64]; | |
d4c88bbb | 2503 | size_t len; |
252b5132 RH |
2504 | int split; |
2505 | ||
2506 | split = ((hdr->p_memsz > 0) | |
2507 | && (hdr->p_filesz > 0) | |
2508 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2509 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2510 | len = strlen (namebuf) + 1; |
217aa764 | 2511 | name = bfd_alloc (abfd, len); |
252b5132 | 2512 | if (!name) |
b34976b6 | 2513 | return FALSE; |
d4c88bbb | 2514 | memcpy (name, namebuf, len); |
252b5132 RH |
2515 | newsect = bfd_make_section (abfd, name); |
2516 | if (newsect == NULL) | |
b34976b6 | 2517 | return FALSE; |
252b5132 RH |
2518 | newsect->vma = hdr->p_vaddr; |
2519 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2520 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2521 | newsect->filepos = hdr->p_offset; |
2522 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2523 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2524 | if (hdr->p_type == PT_LOAD) |
2525 | { | |
2526 | newsect->flags |= SEC_ALLOC; | |
2527 | newsect->flags |= SEC_LOAD; | |
2528 | if (hdr->p_flags & PF_X) | |
2529 | { | |
2530 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2531 | may be data. */ |
252b5132 RH |
2532 | newsect->flags |= SEC_CODE; |
2533 | } | |
2534 | } | |
2535 | if (!(hdr->p_flags & PF_W)) | |
2536 | { | |
2537 | newsect->flags |= SEC_READONLY; | |
2538 | } | |
2539 | ||
2540 | if (split) | |
2541 | { | |
27ac83bf | 2542 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2543 | len = strlen (namebuf) + 1; |
217aa764 | 2544 | name = bfd_alloc (abfd, len); |
252b5132 | 2545 | if (!name) |
b34976b6 | 2546 | return FALSE; |
d4c88bbb | 2547 | memcpy (name, namebuf, len); |
252b5132 RH |
2548 | newsect = bfd_make_section (abfd, name); |
2549 | if (newsect == NULL) | |
b34976b6 | 2550 | return FALSE; |
252b5132 RH |
2551 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2552 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2553 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2554 | if (hdr->p_type == PT_LOAD) |
2555 | { | |
2556 | newsect->flags |= SEC_ALLOC; | |
2557 | if (hdr->p_flags & PF_X) | |
2558 | newsect->flags |= SEC_CODE; | |
2559 | } | |
2560 | if (!(hdr->p_flags & PF_W)) | |
2561 | newsect->flags |= SEC_READONLY; | |
2562 | } | |
2563 | ||
b34976b6 | 2564 | return TRUE; |
252b5132 RH |
2565 | } |
2566 | ||
b34976b6 | 2567 | bfd_boolean |
217aa764 | 2568 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2569 | { |
9c5bfbb7 | 2570 | const struct elf_backend_data *bed; |
20cfcaae NC |
2571 | |
2572 | switch (hdr->p_type) | |
2573 | { | |
2574 | case PT_NULL: | |
2575 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2576 | ||
2577 | case PT_LOAD: | |
2578 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2579 | ||
2580 | case PT_DYNAMIC: | |
2581 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2582 | ||
2583 | case PT_INTERP: | |
2584 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2585 | ||
2586 | case PT_NOTE: | |
2587 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2588 | return FALSE; |
217aa764 | 2589 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2590 | return FALSE; |
2591 | return TRUE; | |
20cfcaae NC |
2592 | |
2593 | case PT_SHLIB: | |
2594 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2595 | ||
2596 | case PT_PHDR: | |
2597 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2598 | ||
811072d8 RM |
2599 | case PT_GNU_EH_FRAME: |
2600 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2601 | "eh_frame_hdr"); | |
2602 | ||
9ee5e499 JJ |
2603 | case PT_GNU_STACK: |
2604 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2605 | ||
8c37241b JJ |
2606 | case PT_GNU_RELRO: |
2607 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2608 | ||
20cfcaae | 2609 | default: |
8c1acd09 | 2610 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2611 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2612 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2613 | } |
2614 | } | |
2615 | ||
23bc299b | 2616 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2617 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2618 | relocations; otherwise, we use REL relocations. */ |
2619 | ||
b34976b6 | 2620 | bfd_boolean |
217aa764 AM |
2621 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2622 | Elf_Internal_Shdr *rel_hdr, | |
2623 | asection *asect, | |
2624 | bfd_boolean use_rela_p) | |
23bc299b MM |
2625 | { |
2626 | char *name; | |
9c5bfbb7 | 2627 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2628 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2629 | |
dc810e39 | 2630 | name = bfd_alloc (abfd, amt); |
23bc299b | 2631 | if (name == NULL) |
b34976b6 | 2632 | return FALSE; |
23bc299b MM |
2633 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2634 | rel_hdr->sh_name = | |
2b0f7ef9 | 2635 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2636 | FALSE); |
23bc299b | 2637 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2638 | return FALSE; |
23bc299b MM |
2639 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2640 | rel_hdr->sh_entsize = (use_rela_p | |
2641 | ? bed->s->sizeof_rela | |
2642 | : bed->s->sizeof_rel); | |
45d6a902 | 2643 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2644 | rel_hdr->sh_flags = 0; |
2645 | rel_hdr->sh_addr = 0; | |
2646 | rel_hdr->sh_size = 0; | |
2647 | rel_hdr->sh_offset = 0; | |
2648 | ||
b34976b6 | 2649 | return TRUE; |
23bc299b MM |
2650 | } |
2651 | ||
252b5132 RH |
2652 | /* Set up an ELF internal section header for a section. */ |
2653 | ||
252b5132 | 2654 | static void |
217aa764 | 2655 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2656 | { |
9c5bfbb7 | 2657 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2658 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2659 | Elf_Internal_Shdr *this_hdr; |
2660 | ||
2661 | if (*failedptr) | |
2662 | { | |
2663 | /* We already failed; just get out of the bfd_map_over_sections | |
2664 | loop. */ | |
2665 | return; | |
2666 | } | |
2667 | ||
2668 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2669 | ||
e57b5356 AM |
2670 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2671 | asect->name, FALSE); | |
2672 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2673 | { |
b34976b6 | 2674 | *failedptr = TRUE; |
252b5132 RH |
2675 | return; |
2676 | } | |
2677 | ||
a4d8e49b | 2678 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2679 | |
2680 | if ((asect->flags & SEC_ALLOC) != 0 | |
2681 | || asect->user_set_vma) | |
2682 | this_hdr->sh_addr = asect->vma; | |
2683 | else | |
2684 | this_hdr->sh_addr = 0; | |
2685 | ||
2686 | this_hdr->sh_offset = 0; | |
eea6121a | 2687 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2688 | this_hdr->sh_link = 0; |
2689 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2690 | /* The sh_entsize and sh_info fields may have been set already by | |
2691 | copy_private_section_data. */ | |
2692 | ||
2693 | this_hdr->bfd_section = asect; | |
2694 | this_hdr->contents = NULL; | |
2695 | ||
3cddba1e L |
2696 | /* If the section type is unspecified, we set it based on |
2697 | asect->flags. */ | |
2698 | if (this_hdr->sh_type == SHT_NULL) | |
2699 | { | |
45c5e9ed | 2700 | if ((asect->flags & SEC_GROUP) != 0) |
ccd2ec6a | 2701 | this_hdr->sh_type = SHT_GROUP; |
45c5e9ed | 2702 | else if ((asect->flags & SEC_ALLOC) != 0 |
3cddba1e L |
2703 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2704 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2705 | this_hdr->sh_type = SHT_NOBITS; | |
2706 | else | |
2707 | this_hdr->sh_type = SHT_PROGBITS; | |
2708 | } | |
2709 | ||
2f89ff8d | 2710 | switch (this_hdr->sh_type) |
252b5132 | 2711 | { |
2f89ff8d | 2712 | default: |
2f89ff8d L |
2713 | break; |
2714 | ||
2715 | case SHT_STRTAB: | |
2716 | case SHT_INIT_ARRAY: | |
2717 | case SHT_FINI_ARRAY: | |
2718 | case SHT_PREINIT_ARRAY: | |
2719 | case SHT_NOTE: | |
2720 | case SHT_NOBITS: | |
2721 | case SHT_PROGBITS: | |
2722 | break; | |
2723 | ||
2724 | case SHT_HASH: | |
c7ac6ff8 | 2725 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2726 | break; |
5de3bf90 | 2727 | |
2f89ff8d | 2728 | case SHT_DYNSYM: |
252b5132 | 2729 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2730 | break; |
2731 | ||
2732 | case SHT_DYNAMIC: | |
252b5132 | 2733 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2734 | break; |
2735 | ||
2736 | case SHT_RELA: | |
2737 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2738 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2739 | break; | |
2740 | ||
2741 | case SHT_REL: | |
2742 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2743 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2744 | break; | |
2745 | ||
2746 | case SHT_GNU_versym: | |
252b5132 | 2747 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2748 | break; |
2749 | ||
2750 | case SHT_GNU_verdef: | |
252b5132 RH |
2751 | this_hdr->sh_entsize = 0; |
2752 | /* objcopy or strip will copy over sh_info, but may not set | |
2753 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2754 | zero. */ | |
2755 | if (this_hdr->sh_info == 0) | |
2756 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2757 | else | |
2758 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2759 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2760 | break; |
2761 | ||
2762 | case SHT_GNU_verneed: | |
252b5132 RH |
2763 | this_hdr->sh_entsize = 0; |
2764 | /* objcopy or strip will copy over sh_info, but may not set | |
2765 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2766 | zero. */ | |
2767 | if (this_hdr->sh_info == 0) | |
2768 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2769 | else | |
2770 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2771 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2772 | break; |
2773 | ||
2774 | case SHT_GROUP: | |
dbb410c3 | 2775 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2776 | break; |
dbb410c3 | 2777 | } |
252b5132 RH |
2778 | |
2779 | if ((asect->flags & SEC_ALLOC) != 0) | |
2780 | this_hdr->sh_flags |= SHF_ALLOC; | |
2781 | if ((asect->flags & SEC_READONLY) == 0) | |
2782 | this_hdr->sh_flags |= SHF_WRITE; | |
2783 | if ((asect->flags & SEC_CODE) != 0) | |
2784 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2785 | if ((asect->flags & SEC_MERGE) != 0) |
2786 | { | |
2787 | this_hdr->sh_flags |= SHF_MERGE; | |
2788 | this_hdr->sh_entsize = asect->entsize; | |
2789 | if ((asect->flags & SEC_STRINGS) != 0) | |
2790 | this_hdr->sh_flags |= SHF_STRINGS; | |
2791 | } | |
1126897b | 2792 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2793 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2794 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2795 | { |
2796 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2797 | if (asect->size == 0 |
2798 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2799 | { |
3a800eb9 | 2800 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2801 | |
704afa60 | 2802 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2803 | if (o != NULL) |
2804 | { | |
704afa60 | 2805 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2806 | if (this_hdr->sh_size != 0) |
2807 | this_hdr->sh_type = SHT_NOBITS; | |
2808 | } | |
704afa60 JJ |
2809 | } |
2810 | } | |
252b5132 RH |
2811 | |
2812 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2813 | if (bed->elf_backend_fake_sections |
2814 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2815 | *failedptr = TRUE; |
252b5132 RH |
2816 | |
2817 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2818 | SHT_REL[A] section. If two relocation sections are required for |
2819 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2820 | create the other. */ |
23bc299b | 2821 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2822 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2823 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2824 | asect, |
68bfbfcc | 2825 | asect->use_rela_p)) |
b34976b6 | 2826 | *failedptr = TRUE; |
252b5132 RH |
2827 | } |
2828 | ||
dbb410c3 AM |
2829 | /* Fill in the contents of a SHT_GROUP section. */ |
2830 | ||
1126897b | 2831 | void |
217aa764 | 2832 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2833 | { |
217aa764 | 2834 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2835 | unsigned long symindx; |
9dce4196 | 2836 | asection *elt, *first; |
dbb410c3 | 2837 | unsigned char *loc; |
b34976b6 | 2838 | bfd_boolean gas; |
dbb410c3 | 2839 | |
7e4111ad L |
2840 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2841 | elfxx-ia64.c. */ | |
2842 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2843 | || *failedptr) |
2844 | return; | |
2845 | ||
1126897b AM |
2846 | symindx = 0; |
2847 | if (elf_group_id (sec) != NULL) | |
2848 | symindx = elf_group_id (sec)->udata.i; | |
2849 | ||
2850 | if (symindx == 0) | |
2851 | { | |
2852 | /* If called from the assembler, swap_out_syms will have set up | |
2853 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2854 | if (elf_section_syms (abfd) != NULL) | |
2855 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2856 | else | |
2857 | symindx = sec->target_index; | |
2858 | } | |
dbb410c3 AM |
2859 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2860 | ||
1126897b | 2861 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2862 | gas = TRUE; |
dbb410c3 AM |
2863 | if (sec->contents == NULL) |
2864 | { | |
b34976b6 | 2865 | gas = FALSE; |
eea6121a | 2866 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2867 | |
2868 | /* Arrange for the section to be written out. */ | |
2869 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2870 | if (sec->contents == NULL) |
2871 | { | |
b34976b6 | 2872 | *failedptr = TRUE; |
dbb410c3 AM |
2873 | return; |
2874 | } | |
2875 | } | |
2876 | ||
eea6121a | 2877 | loc = sec->contents + sec->size; |
dbb410c3 | 2878 | |
9dce4196 AM |
2879 | /* Get the pointer to the first section in the group that gas |
2880 | squirreled away here. objcopy arranges for this to be set to the | |
2881 | start of the input section group. */ | |
2882 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2883 | |
2884 | /* First element is a flag word. Rest of section is elf section | |
2885 | indices for all the sections of the group. Write them backwards | |
2886 | just to keep the group in the same order as given in .section | |
2887 | directives, not that it matters. */ | |
2888 | while (elt != NULL) | |
2889 | { | |
9dce4196 AM |
2890 | asection *s; |
2891 | unsigned int idx; | |
2892 | ||
dbb410c3 | 2893 | loc -= 4; |
9dce4196 AM |
2894 | s = elt; |
2895 | if (!gas) | |
2896 | s = s->output_section; | |
2897 | idx = 0; | |
2898 | if (s != NULL) | |
2899 | idx = elf_section_data (s)->this_idx; | |
2900 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2901 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2902 | if (elt == first) |
2903 | break; | |
dbb410c3 AM |
2904 | } |
2905 | ||
3d7f7666 | 2906 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2907 | abort (); |
dbb410c3 | 2908 | |
9dce4196 | 2909 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2910 | } |
2911 | ||
252b5132 RH |
2912 | /* Assign all ELF section numbers. The dummy first section is handled here |
2913 | too. The link/info pointers for the standard section types are filled | |
2914 | in here too, while we're at it. */ | |
2915 | ||
b34976b6 | 2916 | static bfd_boolean |
da9f89d4 | 2917 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2918 | { |
2919 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2920 | asection *sec; | |
2b0f7ef9 | 2921 | unsigned int section_number, secn; |
252b5132 | 2922 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2923 | struct bfd_elf_section_data *d; |
252b5132 RH |
2924 | |
2925 | section_number = 1; | |
2926 | ||
2b0f7ef9 JJ |
2927 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2928 | ||
da9f89d4 L |
2929 | /* SHT_GROUP sections are in relocatable files only. */ |
2930 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2931 | { |
da9f89d4 | 2932 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2933 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2934 | { |
5daa8fe7 | 2935 | d = elf_section_data (sec); |
da9f89d4 L |
2936 | |
2937 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2938 | { | |
5daa8fe7 | 2939 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2940 | { |
2941 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2942 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2943 | abfd->section_count--; |
da9f89d4 L |
2944 | } |
2945 | else | |
2946 | { | |
2947 | if (section_number == SHN_LORESERVE) | |
2948 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2949 | d->this_idx = section_number++; | |
2950 | } | |
2951 | } | |
47cc2cf5 PB |
2952 | } |
2953 | } | |
2954 | ||
2955 | for (sec = abfd->sections; sec; sec = sec->next) | |
2956 | { | |
2957 | d = elf_section_data (sec); | |
2958 | ||
2959 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2960 | { | |
2961 | if (section_number == SHN_LORESERVE) | |
2962 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2963 | d->this_idx = section_number++; | |
2964 | } | |
2b0f7ef9 | 2965 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2966 | if ((sec->flags & SEC_RELOC) == 0) |
2967 | d->rel_idx = 0; | |
2968 | else | |
2b0f7ef9 | 2969 | { |
9ad5cbcf AM |
2970 | if (section_number == SHN_LORESERVE) |
2971 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2972 | d->rel_idx = section_number++; |
2973 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2974 | } | |
23bc299b MM |
2975 | |
2976 | if (d->rel_hdr2) | |
2b0f7ef9 | 2977 | { |
9ad5cbcf AM |
2978 | if (section_number == SHN_LORESERVE) |
2979 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2980 | d->rel_idx2 = section_number++; |
2981 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2982 | } | |
23bc299b MM |
2983 | else |
2984 | d->rel_idx2 = 0; | |
252b5132 RH |
2985 | } |
2986 | ||
9ad5cbcf AM |
2987 | if (section_number == SHN_LORESERVE) |
2988 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2989 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2990 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2991 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2992 | |
2993 | if (bfd_get_symcount (abfd) > 0) | |
2994 | { | |
9ad5cbcf AM |
2995 | if (section_number == SHN_LORESERVE) |
2996 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2997 | t->symtab_section = section_number++; |
2b0f7ef9 | 2998 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2999 | if (section_number > SHN_LORESERVE - 2) |
3000 | { | |
3001 | if (section_number == SHN_LORESERVE) | |
3002 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
3003 | t->symtab_shndx_section = section_number++; | |
3004 | t->symtab_shndx_hdr.sh_name | |
3005 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 3006 | ".symtab_shndx", FALSE); |
9ad5cbcf | 3007 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 3008 | return FALSE; |
9ad5cbcf AM |
3009 | } |
3010 | if (section_number == SHN_LORESERVE) | |
3011 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 3012 | t->strtab_section = section_number++; |
2b0f7ef9 | 3013 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
3014 | } |
3015 | ||
2b0f7ef9 JJ |
3016 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
3017 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
3018 | |
3019 | elf_numsections (abfd) = section_number; | |
252b5132 | 3020 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3021 | if (section_number > SHN_LORESERVE) |
3022 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3023 | |
3024 | /* Set up the list of section header pointers, in agreement with the | |
3025 | indices. */ | |
d0fb9a8d | 3026 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 3027 | if (i_shdrp == NULL) |
b34976b6 | 3028 | return FALSE; |
252b5132 | 3029 | |
d0fb9a8d | 3030 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3031 | if (i_shdrp[0] == NULL) |
3032 | { | |
3033 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3034 | return FALSE; |
252b5132 | 3035 | } |
252b5132 RH |
3036 | |
3037 | elf_elfsections (abfd) = i_shdrp; | |
3038 | ||
3039 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3040 | if (bfd_get_symcount (abfd) > 0) | |
3041 | { | |
3042 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3043 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3044 | { | |
3045 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3046 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3047 | } | |
252b5132 RH |
3048 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3049 | t->symtab_hdr.sh_link = t->strtab_section; | |
3050 | } | |
38ce5b11 | 3051 | |
252b5132 RH |
3052 | for (sec = abfd->sections; sec; sec = sec->next) |
3053 | { | |
3054 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3055 | asection *s; | |
3056 | const char *name; | |
3057 | ||
3058 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3059 | if (d->rel_idx != 0) | |
3060 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3061 | if (d->rel_idx2 != 0) |
3062 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3063 | |
3064 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3065 | ||
3066 | /* sh_link of a reloc section is the section index of the symbol | |
3067 | table. sh_info is the section index of the section to which | |
3068 | the relocation entries apply. */ | |
3069 | if (d->rel_idx != 0) | |
3070 | { | |
3071 | d->rel_hdr.sh_link = t->symtab_section; | |
3072 | d->rel_hdr.sh_info = d->this_idx; | |
3073 | } | |
23bc299b MM |
3074 | if (d->rel_idx2 != 0) |
3075 | { | |
3076 | d->rel_hdr2->sh_link = t->symtab_section; | |
3077 | d->rel_hdr2->sh_info = d->this_idx; | |
3078 | } | |
252b5132 | 3079 | |
38ce5b11 L |
3080 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3081 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3082 | { | |
3083 | s = elf_linked_to_section (sec); | |
3084 | if (s) | |
38ce5b11 | 3085 | { |
f2876037 | 3086 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 3087 | if (link_info != NULL) |
38ce5b11 | 3088 | { |
f2876037 | 3089 | /* Check discarded linkonce section. */ |
ccd2ec6a | 3090 | if (elf_discarded_section (s)) |
38ce5b11 | 3091 | { |
ccd2ec6a L |
3092 | asection *kept; |
3093 | (*_bfd_error_handler) | |
3094 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3095 | abfd, d->this_hdr.bfd_section, | |
3096 | s, s->owner); | |
3097 | /* Point to the kept section if it has the same | |
3098 | size as the discarded one. */ | |
3099 | kept = _bfd_elf_check_kept_section (s); | |
3100 | if (kept == NULL) | |
185d09ad | 3101 | { |
ccd2ec6a L |
3102 | bfd_set_error (bfd_error_bad_value); |
3103 | return FALSE; | |
185d09ad | 3104 | } |
ccd2ec6a | 3105 | s = kept; |
38ce5b11 | 3106 | } |
e424ecc8 | 3107 | |
ccd2ec6a L |
3108 | s = s->output_section; |
3109 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 3110 | } |
f2876037 L |
3111 | else |
3112 | { | |
3113 | /* Handle objcopy. */ | |
3114 | if (s->output_section == NULL) | |
3115 | { | |
3116 | (*_bfd_error_handler) | |
3117 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
3118 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
3119 | bfd_set_error (bfd_error_bad_value); | |
3120 | return FALSE; | |
3121 | } | |
3122 | s = s->output_section; | |
3123 | } | |
ccd2ec6a L |
3124 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
3125 | } | |
3126 | else | |
3127 | { | |
3128 | /* PR 290: | |
3129 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
3130 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
3131 | sh_info fields. Hence we could get the situation | |
3132 | where s is NULL. */ | |
3133 | const struct elf_backend_data *bed | |
3134 | = get_elf_backend_data (abfd); | |
3135 | if (bed->link_order_error_handler) | |
3136 | bed->link_order_error_handler | |
3137 | (_("%B: warning: sh_link not set for section `%A'"), | |
3138 | abfd, sec); | |
38ce5b11 L |
3139 | } |
3140 | } | |
3141 | ||
252b5132 RH |
3142 | switch (d->this_hdr.sh_type) |
3143 | { | |
3144 | case SHT_REL: | |
3145 | case SHT_RELA: | |
3146 | /* A reloc section which we are treating as a normal BFD | |
3147 | section. sh_link is the section index of the symbol | |
3148 | table. sh_info is the section index of the section to | |
3149 | which the relocation entries apply. We assume that an | |
3150 | allocated reloc section uses the dynamic symbol table. | |
3151 | FIXME: How can we be sure? */ | |
3152 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3153 | if (s != NULL) | |
3154 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3155 | ||
3156 | /* We look up the section the relocs apply to by name. */ | |
3157 | name = sec->name; | |
3158 | if (d->this_hdr.sh_type == SHT_REL) | |
3159 | name += 4; | |
3160 | else | |
3161 | name += 5; | |
3162 | s = bfd_get_section_by_name (abfd, name); | |
3163 | if (s != NULL) | |
3164 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3165 | break; | |
3166 | ||
3167 | case SHT_STRTAB: | |
3168 | /* We assume that a section named .stab*str is a stabs | |
3169 | string section. We look for a section with the same name | |
3170 | but without the trailing ``str'', and set its sh_link | |
3171 | field to point to this section. */ | |
3172 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3173 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3174 | { | |
3175 | size_t len; | |
3176 | char *alc; | |
3177 | ||
3178 | len = strlen (sec->name); | |
217aa764 | 3179 | alc = bfd_malloc (len - 2); |
252b5132 | 3180 | if (alc == NULL) |
b34976b6 | 3181 | return FALSE; |
d4c88bbb | 3182 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3183 | alc[len - 3] = '\0'; |
3184 | s = bfd_get_section_by_name (abfd, alc); | |
3185 | free (alc); | |
3186 | if (s != NULL) | |
3187 | { | |
3188 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3189 | ||
3190 | /* This is a .stab section. */ | |
0594c12d AM |
3191 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3192 | elf_section_data (s)->this_hdr.sh_entsize | |
3193 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3194 | } |
3195 | } | |
3196 | break; | |
3197 | ||
3198 | case SHT_DYNAMIC: | |
3199 | case SHT_DYNSYM: | |
3200 | case SHT_GNU_verneed: | |
3201 | case SHT_GNU_verdef: | |
3202 | /* sh_link is the section header index of the string table | |
3203 | used for the dynamic entries, or the symbol table, or the | |
3204 | version strings. */ | |
3205 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3206 | if (s != NULL) | |
3207 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3208 | break; | |
3209 | ||
7f1204bb JJ |
3210 | case SHT_GNU_LIBLIST: |
3211 | /* sh_link is the section header index of the prelink library | |
3212 | list | |
3213 | used for the dynamic entries, or the symbol table, or the | |
3214 | version strings. */ | |
3215 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3216 | ? ".dynstr" : ".gnu.libstr"); | |
3217 | if (s != NULL) | |
3218 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3219 | break; | |
3220 | ||
252b5132 RH |
3221 | case SHT_HASH: |
3222 | case SHT_GNU_versym: | |
3223 | /* sh_link is the section header index of the symbol table | |
3224 | this hash table or version table is for. */ | |
3225 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3226 | if (s != NULL) | |
3227 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3228 | break; | |
dbb410c3 AM |
3229 | |
3230 | case SHT_GROUP: | |
3231 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3232 | } |
3233 | } | |
3234 | ||
2b0f7ef9 | 3235 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3236 | if (i_shdrp[secn] == NULL) |
3237 | i_shdrp[secn] = i_shdrp[0]; | |
3238 | else | |
3239 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3240 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3241 | return TRUE; |
252b5132 RH |
3242 | } |
3243 | ||
3244 | /* Map symbol from it's internal number to the external number, moving | |
3245 | all local symbols to be at the head of the list. */ | |
3246 | ||
268b6b39 | 3247 | static int |
217aa764 | 3248 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3249 | { |
3250 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3251 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3252 | if (bed->elf_backend_sym_is_global) |
3253 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3254 | |
3255 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3256 | || bfd_is_und_section (bfd_get_section (sym)) | |
3257 | || bfd_is_com_section (bfd_get_section (sym))); | |
3258 | } | |
3259 | ||
b34976b6 | 3260 | static bfd_boolean |
217aa764 | 3261 | elf_map_symbols (bfd *abfd) |
252b5132 | 3262 | { |
dc810e39 | 3263 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3264 | asymbol **syms = bfd_get_outsymbols (abfd); |
3265 | asymbol **sect_syms; | |
dc810e39 AM |
3266 | unsigned int num_locals = 0; |
3267 | unsigned int num_globals = 0; | |
3268 | unsigned int num_locals2 = 0; | |
3269 | unsigned int num_globals2 = 0; | |
252b5132 | 3270 | int max_index = 0; |
dc810e39 | 3271 | unsigned int idx; |
252b5132 RH |
3272 | asection *asect; |
3273 | asymbol **new_syms; | |
252b5132 RH |
3274 | |
3275 | #ifdef DEBUG | |
3276 | fprintf (stderr, "elf_map_symbols\n"); | |
3277 | fflush (stderr); | |
3278 | #endif | |
3279 | ||
252b5132 RH |
3280 | for (asect = abfd->sections; asect; asect = asect->next) |
3281 | { | |
3282 | if (max_index < asect->index) | |
3283 | max_index = asect->index; | |
3284 | } | |
3285 | ||
3286 | max_index++; | |
d0fb9a8d | 3287 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3288 | if (sect_syms == NULL) |
b34976b6 | 3289 | return FALSE; |
252b5132 | 3290 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3291 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3292 | |
079e9a2f AM |
3293 | /* Init sect_syms entries for any section symbols we have already |
3294 | decided to output. */ | |
252b5132 RH |
3295 | for (idx = 0; idx < symcount; idx++) |
3296 | { | |
dc810e39 | 3297 | asymbol *sym = syms[idx]; |
c044fabd | 3298 | |
252b5132 RH |
3299 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3300 | && sym->value == 0) | |
3301 | { | |
3302 | asection *sec; | |
3303 | ||
3304 | sec = sym->section; | |
3305 | ||
3306 | if (sec->owner != NULL) | |
3307 | { | |
3308 | if (sec->owner != abfd) | |
3309 | { | |
3310 | if (sec->output_offset != 0) | |
3311 | continue; | |
c044fabd | 3312 | |
252b5132 RH |
3313 | sec = sec->output_section; |
3314 | ||
079e9a2f AM |
3315 | /* Empty sections in the input files may have had a |
3316 | section symbol created for them. (See the comment | |
3317 | near the end of _bfd_generic_link_output_symbols in | |
3318 | linker.c). If the linker script discards such | |
3319 | sections then we will reach this point. Since we know | |
3320 | that we cannot avoid this case, we detect it and skip | |
3321 | the abort and the assignment to the sect_syms array. | |
3322 | To reproduce this particular case try running the | |
3323 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3324 | port that uses the generic linker. */ | |
252b5132 RH |
3325 | if (sec->owner == NULL) |
3326 | continue; | |
3327 | ||
3328 | BFD_ASSERT (sec->owner == abfd); | |
3329 | } | |
3330 | sect_syms[sec->index] = syms[idx]; | |
3331 | } | |
3332 | } | |
3333 | } | |
3334 | ||
252b5132 RH |
3335 | /* Classify all of the symbols. */ |
3336 | for (idx = 0; idx < symcount; idx++) | |
3337 | { | |
3338 | if (!sym_is_global (abfd, syms[idx])) | |
3339 | num_locals++; | |
3340 | else | |
3341 | num_globals++; | |
3342 | } | |
079e9a2f AM |
3343 | |
3344 | /* We will be adding a section symbol for each BFD section. Most normal | |
3345 | sections will already have a section symbol in outsymbols, but | |
3346 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3347 | at least in that case. */ | |
252b5132 RH |
3348 | for (asect = abfd->sections; asect; asect = asect->next) |
3349 | { | |
079e9a2f | 3350 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3351 | { |
079e9a2f | 3352 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3353 | num_locals++; |
3354 | else | |
3355 | num_globals++; | |
252b5132 RH |
3356 | } |
3357 | } | |
3358 | ||
3359 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3360 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3361 | |
252b5132 | 3362 | if (new_syms == NULL) |
b34976b6 | 3363 | return FALSE; |
252b5132 RH |
3364 | |
3365 | for (idx = 0; idx < symcount; idx++) | |
3366 | { | |
3367 | asymbol *sym = syms[idx]; | |
dc810e39 | 3368 | unsigned int i; |
252b5132 RH |
3369 | |
3370 | if (!sym_is_global (abfd, sym)) | |
3371 | i = num_locals2++; | |
3372 | else | |
3373 | i = num_locals + num_globals2++; | |
3374 | new_syms[i] = sym; | |
3375 | sym->udata.i = i + 1; | |
3376 | } | |
3377 | for (asect = abfd->sections; asect; asect = asect->next) | |
3378 | { | |
079e9a2f | 3379 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3380 | { |
079e9a2f | 3381 | asymbol *sym = asect->symbol; |
dc810e39 | 3382 | unsigned int i; |
252b5132 | 3383 | |
079e9a2f | 3384 | sect_syms[asect->index] = sym; |
252b5132 RH |
3385 | if (!sym_is_global (abfd, sym)) |
3386 | i = num_locals2++; | |
3387 | else | |
3388 | i = num_locals + num_globals2++; | |
3389 | new_syms[i] = sym; | |
3390 | sym->udata.i = i + 1; | |
3391 | } | |
3392 | } | |
3393 | ||
3394 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3395 | ||
3396 | elf_num_locals (abfd) = num_locals; | |
3397 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3398 | return TRUE; |
252b5132 RH |
3399 | } |
3400 | ||
3401 | /* Align to the maximum file alignment that could be required for any | |
3402 | ELF data structure. */ | |
3403 | ||
268b6b39 | 3404 | static inline file_ptr |
217aa764 | 3405 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3406 | { |
3407 | return (off + align - 1) & ~(align - 1); | |
3408 | } | |
3409 | ||
3410 | /* Assign a file position to a section, optionally aligning to the | |
3411 | required section alignment. */ | |
3412 | ||
217aa764 AM |
3413 | file_ptr |
3414 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3415 | file_ptr offset, | |
3416 | bfd_boolean align) | |
252b5132 RH |
3417 | { |
3418 | if (align) | |
3419 | { | |
3420 | unsigned int al; | |
3421 | ||
3422 | al = i_shdrp->sh_addralign; | |
3423 | if (al > 1) | |
3424 | offset = BFD_ALIGN (offset, al); | |
3425 | } | |
3426 | i_shdrp->sh_offset = offset; | |
3427 | if (i_shdrp->bfd_section != NULL) | |
3428 | i_shdrp->bfd_section->filepos = offset; | |
3429 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3430 | offset += i_shdrp->sh_size; | |
3431 | return offset; | |
3432 | } | |
3433 | ||
3434 | /* Compute the file positions we are going to put the sections at, and | |
3435 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3436 | is not NULL, this is being called by the ELF backend linker. */ | |
3437 | ||
b34976b6 | 3438 | bfd_boolean |
217aa764 AM |
3439 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3440 | struct bfd_link_info *link_info) | |
252b5132 | 3441 | { |
9c5bfbb7 | 3442 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3443 | bfd_boolean failed; |
4b6c0f2f | 3444 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3445 | Elf_Internal_Shdr *shstrtab_hdr; |
3446 | ||
3447 | if (abfd->output_has_begun) | |
b34976b6 | 3448 | return TRUE; |
252b5132 RH |
3449 | |
3450 | /* Do any elf backend specific processing first. */ | |
3451 | if (bed->elf_backend_begin_write_processing) | |
3452 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3453 | ||
3454 | if (! prep_headers (abfd)) | |
b34976b6 | 3455 | return FALSE; |
252b5132 | 3456 | |
e6c51ed4 NC |
3457 | /* Post process the headers if necessary. */ |
3458 | if (bed->elf_backend_post_process_headers) | |
3459 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3460 | ||
b34976b6 | 3461 | failed = FALSE; |
252b5132 RH |
3462 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3463 | if (failed) | |
b34976b6 | 3464 | return FALSE; |
252b5132 | 3465 | |
da9f89d4 | 3466 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3467 | return FALSE; |
252b5132 RH |
3468 | |
3469 | /* The backend linker builds symbol table information itself. */ | |
3470 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3471 | { | |
3472 | /* Non-zero if doing a relocatable link. */ | |
3473 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3474 | ||
3475 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3476 | return FALSE; |
252b5132 RH |
3477 | } |
3478 | ||
1126897b | 3479 | if (link_info == NULL) |
dbb410c3 | 3480 | { |
1126897b | 3481 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3482 | if (failed) |
b34976b6 | 3483 | return FALSE; |
dbb410c3 AM |
3484 | } |
3485 | ||
252b5132 RH |
3486 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3487 | /* sh_name was set in prep_headers. */ | |
3488 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3489 | shstrtab_hdr->sh_flags = 0; | |
3490 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3491 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3492 | shstrtab_hdr->sh_entsize = 0; |
3493 | shstrtab_hdr->sh_link = 0; | |
3494 | shstrtab_hdr->sh_info = 0; | |
3495 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3496 | shstrtab_hdr->sh_addralign = 1; | |
3497 | ||
c84fca4d | 3498 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3499 | return FALSE; |
252b5132 RH |
3500 | |
3501 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3502 | { | |
3503 | file_ptr off; | |
3504 | Elf_Internal_Shdr *hdr; | |
3505 | ||
3506 | off = elf_tdata (abfd)->next_file_pos; | |
3507 | ||
3508 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3509 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3510 | |
9ad5cbcf AM |
3511 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3512 | if (hdr->sh_size != 0) | |
b34976b6 | 3513 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3514 | |
252b5132 | 3515 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3516 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3517 | |
3518 | elf_tdata (abfd)->next_file_pos = off; | |
3519 | ||
3520 | /* Now that we know where the .strtab section goes, write it | |
3521 | out. */ | |
3522 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3523 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3524 | return FALSE; |
252b5132 RH |
3525 | _bfd_stringtab_free (strtab); |
3526 | } | |
3527 | ||
b34976b6 | 3528 | abfd->output_has_begun = TRUE; |
252b5132 | 3529 | |
b34976b6 | 3530 | return TRUE; |
252b5132 RH |
3531 | } |
3532 | ||
3533 | /* Create a mapping from a set of sections to a program segment. */ | |
3534 | ||
217aa764 AM |
3535 | static struct elf_segment_map * |
3536 | make_mapping (bfd *abfd, | |
3537 | asection **sections, | |
3538 | unsigned int from, | |
3539 | unsigned int to, | |
3540 | bfd_boolean phdr) | |
252b5132 RH |
3541 | { |
3542 | struct elf_segment_map *m; | |
3543 | unsigned int i; | |
3544 | asection **hdrpp; | |
dc810e39 | 3545 | bfd_size_type amt; |
252b5132 | 3546 | |
dc810e39 AM |
3547 | amt = sizeof (struct elf_segment_map); |
3548 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3549 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3550 | if (m == NULL) |
3551 | return NULL; | |
3552 | m->next = NULL; | |
3553 | m->p_type = PT_LOAD; | |
3554 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3555 | m->sections[i - from] = *hdrpp; | |
3556 | m->count = to - from; | |
3557 | ||
3558 | if (from == 0 && phdr) | |
3559 | { | |
3560 | /* Include the headers in the first PT_LOAD segment. */ | |
3561 | m->includes_filehdr = 1; | |
3562 | m->includes_phdrs = 1; | |
3563 | } | |
3564 | ||
3565 | return m; | |
3566 | } | |
3567 | ||
229fcec5 MM |
3568 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3569 | on failure. */ | |
3570 | ||
3571 | struct elf_segment_map * | |
3572 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3573 | { | |
3574 | struct elf_segment_map *m; | |
3575 | ||
3576 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3577 | if (m == NULL) | |
3578 | return NULL; | |
3579 | m->next = NULL; | |
3580 | m->p_type = PT_DYNAMIC; | |
3581 | m->count = 1; | |
3582 | m->sections[0] = dynsec; | |
3583 | ||
3584 | return m; | |
3585 | } | |
3586 | ||
252b5132 RH |
3587 | /* Set up a mapping from BFD sections to program segments. */ |
3588 | ||
b34976b6 | 3589 | static bfd_boolean |
217aa764 | 3590 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3591 | { |
3592 | asection **sections = NULL; | |
3593 | asection *s; | |
3594 | unsigned int i; | |
3595 | unsigned int count; | |
3596 | struct elf_segment_map *mfirst; | |
3597 | struct elf_segment_map **pm; | |
3598 | struct elf_segment_map *m; | |
3599 | asection *last_hdr; | |
baaff79e | 3600 | bfd_vma last_size; |
252b5132 RH |
3601 | unsigned int phdr_index; |
3602 | bfd_vma maxpagesize; | |
3603 | asection **hdrpp; | |
b34976b6 AM |
3604 | bfd_boolean phdr_in_segment = TRUE; |
3605 | bfd_boolean writable; | |
13ae64f3 JJ |
3606 | int tls_count = 0; |
3607 | asection *first_tls = NULL; | |
65765700 | 3608 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3609 | bfd_size_type amt; |
252b5132 RH |
3610 | |
3611 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3612 | return TRUE; |
252b5132 RH |
3613 | |
3614 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3615 | return TRUE; |
252b5132 RH |
3616 | |
3617 | /* Select the allocated sections, and sort them. */ | |
3618 | ||
d0fb9a8d | 3619 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
252b5132 RH |
3620 | if (sections == NULL) |
3621 | goto error_return; | |
3622 | ||
3623 | i = 0; | |
3624 | for (s = abfd->sections; s != NULL; s = s->next) | |
3625 | { | |
3626 | if ((s->flags & SEC_ALLOC) != 0) | |
3627 | { | |
3628 | sections[i] = s; | |
3629 | ++i; | |
3630 | } | |
3631 | } | |
3632 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3633 | count = i; | |
3634 | ||
3635 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3636 | ||
3637 | /* Build the mapping. */ | |
3638 | ||
3639 | mfirst = NULL; | |
3640 | pm = &mfirst; | |
3641 | ||
3642 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3643 | the program headers and a PT_INTERP segment for the .interp | |
3644 | section. */ | |
3645 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3646 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3647 | { | |
dc810e39 | 3648 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3649 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3650 | if (m == NULL) |
3651 | goto error_return; | |
3652 | m->next = NULL; | |
3653 | m->p_type = PT_PHDR; | |
3654 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3655 | m->p_flags = PF_R | PF_X; | |
3656 | m->p_flags_valid = 1; | |
3657 | m->includes_phdrs = 1; | |
3658 | ||
3659 | *pm = m; | |
3660 | pm = &m->next; | |
3661 | ||
dc810e39 | 3662 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3663 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3664 | if (m == NULL) |
3665 | goto error_return; | |
3666 | m->next = NULL; | |
3667 | m->p_type = PT_INTERP; | |
3668 | m->count = 1; | |
3669 | m->sections[0] = s; | |
3670 | ||
3671 | *pm = m; | |
3672 | pm = &m->next; | |
3673 | } | |
3674 | ||
3675 | /* Look through the sections. We put sections in the same program | |
3676 | segment when the start of the second section can be placed within | |
3677 | a few bytes of the end of the first section. */ | |
3678 | last_hdr = NULL; | |
baaff79e | 3679 | last_size = 0; |
252b5132 RH |
3680 | phdr_index = 0; |
3681 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3682 | writable = FALSE; |
252b5132 RH |
3683 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3684 | if (dynsec != NULL | |
3685 | && (dynsec->flags & SEC_LOAD) == 0) | |
3686 | dynsec = NULL; | |
3687 | ||
3688 | /* Deal with -Ttext or something similar such that the first section | |
3689 | is not adjacent to the program headers. This is an | |
3690 | approximation, since at this point we don't know exactly how many | |
3691 | program headers we will need. */ | |
3692 | if (count > 0) | |
3693 | { | |
3694 | bfd_size_type phdr_size; | |
3695 | ||
3696 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3697 | if (phdr_size == 0) | |
3698 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3699 | if ((abfd->flags & D_PAGED) == 0 | |
3700 | || sections[0]->lma < phdr_size | |
3701 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3702 | phdr_in_segment = FALSE; |
252b5132 RH |
3703 | } |
3704 | ||
3705 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3706 | { | |
3707 | asection *hdr; | |
b34976b6 | 3708 | bfd_boolean new_segment; |
252b5132 RH |
3709 | |
3710 | hdr = *hdrpp; | |
3711 | ||
3712 | /* See if this section and the last one will fit in the same | |
3713 | segment. */ | |
3714 | ||
3715 | if (last_hdr == NULL) | |
3716 | { | |
3717 | /* If we don't have a segment yet, then we don't need a new | |
3718 | one (we build the last one after this loop). */ | |
b34976b6 | 3719 | new_segment = FALSE; |
252b5132 RH |
3720 | } |
3721 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3722 | { | |
3723 | /* If this section has a different relation between the | |
3724 | virtual address and the load address, then we need a new | |
3725 | segment. */ | |
b34976b6 | 3726 | new_segment = TRUE; |
252b5132 | 3727 | } |
baaff79e | 3728 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3729 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3730 | { | |
3731 | /* If putting this section in this segment would force us to | |
3732 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3733 | new_segment = TRUE; |
252b5132 | 3734 | } |
baaff79e JJ |
3735 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3736 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3737 | { |
3738 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3739 | nonloadable section in the same segment. |
3740 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3741 | new_segment = TRUE; |
252b5132 RH |
3742 | } |
3743 | else if ((abfd->flags & D_PAGED) == 0) | |
3744 | { | |
3745 | /* If the file is not demand paged, which means that we | |
3746 | don't require the sections to be correctly aligned in the | |
3747 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3748 | new_segment = FALSE; |
252b5132 RH |
3749 | } |
3750 | else if (! writable | |
3751 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3752 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3753 | & ~(maxpagesize - 1)) |
3754 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3755 | { |
3756 | /* We don't want to put a writable section in a read only | |
3757 | segment, unless they are on the same page in memory | |
3758 | anyhow. We already know that the last section does not | |
3759 | bring us past the current section on the page, so the | |
3760 | only case in which the new section is not on the same | |
3761 | page as the previous section is when the previous section | |
3762 | ends precisely on a page boundary. */ | |
b34976b6 | 3763 | new_segment = TRUE; |
252b5132 RH |
3764 | } |
3765 | else | |
3766 | { | |
3767 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3768 | new_segment = FALSE; |
252b5132 RH |
3769 | } |
3770 | ||
3771 | if (! new_segment) | |
3772 | { | |
3773 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3774 | writable = TRUE; |
baaff79e JJ |
3775 | last_hdr = hdr; |
3776 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3777 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3778 | last_size = hdr->size; |
baaff79e JJ |
3779 | else |
3780 | last_size = 0; | |
252b5132 RH |
3781 | continue; |
3782 | } | |
3783 | ||
3784 | /* We need a new program segment. We must create a new program | |
3785 | header holding all the sections from phdr_index until hdr. */ | |
3786 | ||
3787 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3788 | if (m == NULL) | |
3789 | goto error_return; | |
3790 | ||
3791 | *pm = m; | |
3792 | pm = &m->next; | |
3793 | ||
3794 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3795 | writable = TRUE; |
252b5132 | 3796 | else |
b34976b6 | 3797 | writable = FALSE; |
252b5132 RH |
3798 | |
3799 | last_hdr = hdr; | |
baaff79e JJ |
3800 | /* .tbss sections effectively have zero size. */ |
3801 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3802 | last_size = hdr->size; |
baaff79e JJ |
3803 | else |
3804 | last_size = 0; | |
252b5132 | 3805 | phdr_index = i; |
b34976b6 | 3806 | phdr_in_segment = FALSE; |
252b5132 RH |
3807 | } |
3808 | ||
3809 | /* Create a final PT_LOAD program segment. */ | |
3810 | if (last_hdr != NULL) | |
3811 | { | |
3812 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3813 | if (m == NULL) | |
3814 | goto error_return; | |
3815 | ||
3816 | *pm = m; | |
3817 | pm = &m->next; | |
3818 | } | |
3819 | ||
3820 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3821 | if (dynsec != NULL) | |
3822 | { | |
229fcec5 | 3823 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3824 | if (m == NULL) |
3825 | goto error_return; | |
252b5132 RH |
3826 | *pm = m; |
3827 | pm = &m->next; | |
3828 | } | |
3829 | ||
3830 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3831 | use bfd_get_section_by_name, because if we link together | |
3832 | nonloadable .note sections and loadable .note sections, we will | |
3833 | generate two .note sections in the output file. FIXME: Using | |
3834 | names for section types is bogus anyhow. */ | |
3835 | for (s = abfd->sections; s != NULL; s = s->next) | |
3836 | { | |
3837 | if ((s->flags & SEC_LOAD) != 0 | |
3838 | && strncmp (s->name, ".note", 5) == 0) | |
3839 | { | |
dc810e39 | 3840 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3841 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3842 | if (m == NULL) |
3843 | goto error_return; | |
3844 | m->next = NULL; | |
3845 | m->p_type = PT_NOTE; | |
3846 | m->count = 1; | |
3847 | m->sections[0] = s; | |
3848 | ||
3849 | *pm = m; | |
3850 | pm = &m->next; | |
3851 | } | |
13ae64f3 JJ |
3852 | if (s->flags & SEC_THREAD_LOCAL) |
3853 | { | |
3854 | if (! tls_count) | |
3855 | first_tls = s; | |
3856 | tls_count++; | |
3857 | } | |
3858 | } | |
3859 | ||
3860 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3861 | if (tls_count > 0) | |
3862 | { | |
3863 | int i; | |
3864 | ||
3865 | amt = sizeof (struct elf_segment_map); | |
3866 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3867 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3868 | if (m == NULL) |
3869 | goto error_return; | |
3870 | m->next = NULL; | |
3871 | m->p_type = PT_TLS; | |
3872 | m->count = tls_count; | |
3873 | /* Mandated PF_R. */ | |
3874 | m->p_flags = PF_R; | |
3875 | m->p_flags_valid = 1; | |
3876 | for (i = 0; i < tls_count; ++i) | |
3877 | { | |
3878 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3879 | m->sections[i] = first_tls; | |
3880 | first_tls = first_tls->next; | |
3881 | } | |
3882 | ||
3883 | *pm = m; | |
3884 | pm = &m->next; | |
252b5132 RH |
3885 | } |
3886 | ||
65765700 JJ |
3887 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3888 | segment. */ | |
126495ed AM |
3889 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3890 | if (eh_frame_hdr != NULL | |
3891 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3892 | { |
3893 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3894 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3895 | if (m == NULL) |
3896 | goto error_return; | |
3897 | m->next = NULL; | |
3898 | m->p_type = PT_GNU_EH_FRAME; | |
3899 | m->count = 1; | |
126495ed | 3900 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3901 | |
3902 | *pm = m; | |
3903 | pm = &m->next; | |
3904 | } | |
3905 | ||
9ee5e499 JJ |
3906 | if (elf_tdata (abfd)->stack_flags) |
3907 | { | |
3908 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3909 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3910 | if (m == NULL) |
3911 | goto error_return; | |
3912 | m->next = NULL; | |
3913 | m->p_type = PT_GNU_STACK; | |
3914 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3915 | m->p_flags_valid = 1; | |
3916 | ||
3917 | *pm = m; | |
3918 | pm = &m->next; | |
3919 | } | |
3920 | ||
8c37241b JJ |
3921 | if (elf_tdata (abfd)->relro) |
3922 | { | |
3923 | amt = sizeof (struct elf_segment_map); | |
3924 | m = bfd_zalloc (abfd, amt); | |
3925 | if (m == NULL) | |
3926 | goto error_return; | |
3927 | m->next = NULL; | |
3928 | m->p_type = PT_GNU_RELRO; | |
3929 | m->p_flags = PF_R; | |
3930 | m->p_flags_valid = 1; | |
3931 | ||
3932 | *pm = m; | |
3933 | pm = &m->next; | |
3934 | } | |
3935 | ||
252b5132 RH |
3936 | free (sections); |
3937 | sections = NULL; | |
3938 | ||
3939 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3940 | return TRUE; |
252b5132 RH |
3941 | |
3942 | error_return: | |
3943 | if (sections != NULL) | |
3944 | free (sections); | |
b34976b6 | 3945 | return FALSE; |
252b5132 RH |
3946 | } |
3947 | ||
3948 | /* Sort sections by address. */ | |
3949 | ||
3950 | static int | |
217aa764 | 3951 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3952 | { |
3953 | const asection *sec1 = *(const asection **) arg1; | |
3954 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3955 | bfd_size_type size1, size2; |
252b5132 RH |
3956 | |
3957 | /* Sort by LMA first, since this is the address used to | |
3958 | place the section into a segment. */ | |
3959 | if (sec1->lma < sec2->lma) | |
3960 | return -1; | |
3961 | else if (sec1->lma > sec2->lma) | |
3962 | return 1; | |
3963 | ||
3964 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3965 | the same, and this will do nothing. */ | |
3966 | if (sec1->vma < sec2->vma) | |
3967 | return -1; | |
3968 | else if (sec1->vma > sec2->vma) | |
3969 | return 1; | |
3970 | ||
3971 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3972 | ||
07c6e936 | 3973 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3974 | |
3975 | if (TOEND (sec1)) | |
3976 | { | |
3977 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3978 | { |
3979 | /* If the indicies are the same, do not return 0 | |
3980 | here, but continue to try the next comparison. */ | |
3981 | if (sec1->target_index - sec2->target_index != 0) | |
3982 | return sec1->target_index - sec2->target_index; | |
3983 | } | |
252b5132 RH |
3984 | else |
3985 | return 1; | |
3986 | } | |
00a7cdc5 | 3987 | else if (TOEND (sec2)) |
252b5132 RH |
3988 | return -1; |
3989 | ||
3990 | #undef TOEND | |
3991 | ||
00a7cdc5 NC |
3992 | /* Sort by size, to put zero sized sections |
3993 | before others at the same address. */ | |
252b5132 | 3994 | |
eea6121a AM |
3995 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3996 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3997 | |
3998 | if (size1 < size2) | |
252b5132 | 3999 | return -1; |
eecdbe52 | 4000 | if (size1 > size2) |
252b5132 RH |
4001 | return 1; |
4002 | ||
4003 | return sec1->target_index - sec2->target_index; | |
4004 | } | |
4005 | ||
340b6d91 AC |
4006 | /* Ian Lance Taylor writes: |
4007 | ||
4008 | We shouldn't be using % with a negative signed number. That's just | |
4009 | not good. We have to make sure either that the number is not | |
4010 | negative, or that the number has an unsigned type. When the types | |
4011 | are all the same size they wind up as unsigned. When file_ptr is a | |
4012 | larger signed type, the arithmetic winds up as signed long long, | |
4013 | which is wrong. | |
4014 | ||
4015 | What we're trying to say here is something like ``increase OFF by | |
4016 | the least amount that will cause it to be equal to the VMA modulo | |
4017 | the page size.'' */ | |
4018 | /* In other words, something like: | |
4019 | ||
4020 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4021 | off_offset = off % bed->maxpagesize; | |
4022 | if (vma_offset < off_offset) | |
4023 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4024 | else | |
4025 | adjustment = vma_offset - off_offset; | |
4026 | ||
4027 | which can can be collapsed into the expression below. */ | |
4028 | ||
4029 | static file_ptr | |
4030 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4031 | { | |
4032 | return ((vma - off) % maxpagesize); | |
4033 | } | |
4034 | ||
cedc298e L |
4035 | static void |
4036 | print_segment_map (bfd *abfd) | |
4037 | { | |
4038 | struct elf_segment_map *m; | |
4039 | unsigned int i, j; | |
4040 | ||
4041 | fprintf (stderr, _(" Section to Segment mapping:\n")); | |
4042 | fprintf (stderr, _(" Segment Sections...\n")); | |
4043 | ||
4044 | for (i= 0, m = elf_tdata (abfd)->segment_map; | |
4045 | m != NULL; | |
4046 | i++, m = m->next) | |
4047 | { | |
4048 | const char *pt = get_segment_type (m->p_type); | |
4049 | char buf[32]; | |
4050 | ||
4051 | if (pt == NULL) | |
4052 | { | |
4053 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4054 | sprintf (buf, "LOPROC+%7.7x", | |
4055 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4056 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4057 | sprintf (buf, "LOOS+%7.7x", | |
4058 | (unsigned int) (m->p_type - PT_LOOS)); | |
4059 | else | |
4060 | snprintf (buf, sizeof (buf), "%8.8x", | |
4061 | (unsigned int) m->p_type); | |
4062 | pt = buf; | |
4063 | } | |
4064 | fprintf (stderr, " %2.2d: %14.14s: ", i, pt); | |
4065 | for (j = 0; j < m->count; j++) | |
4066 | fprintf (stderr, "%s ", m->sections [j]->name); | |
4067 | putc ('\n',stderr); | |
4068 | } | |
4069 | } | |
4070 | ||
252b5132 RH |
4071 | /* Assign file positions to the sections based on the mapping from |
4072 | sections to segments. This function also sets up some fields in | |
4073 | the file header, and writes out the program headers. */ | |
4074 | ||
b34976b6 | 4075 | static bfd_boolean |
c84fca4d | 4076 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
4077 | { |
4078 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4079 | unsigned int count; | |
4080 | struct elf_segment_map *m; | |
4081 | unsigned int alloc; | |
4082 | Elf_Internal_Phdr *phdrs; | |
4083 | file_ptr off, voff; | |
4084 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4085 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4086 | Elf_Internal_Phdr *p; | |
4087 | ||
4088 | if (elf_tdata (abfd)->segment_map == NULL) | |
4089 | { | |
4090 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 4091 | return FALSE; |
252b5132 | 4092 | } |
1ed89aa9 NC |
4093 | else |
4094 | { | |
4095 | /* The placement algorithm assumes that non allocated sections are | |
4096 | not in PT_LOAD segments. We ensure this here by removing such | |
540b09cb AM |
4097 | sections from the segment map. We also remove excluded |
4098 | sections. */ | |
1ed89aa9 NC |
4099 | for (m = elf_tdata (abfd)->segment_map; |
4100 | m != NULL; | |
4101 | m = m->next) | |
4102 | { | |
4103 | unsigned int new_count; | |
4104 | unsigned int i; | |
4105 | ||
1ed89aa9 NC |
4106 | new_count = 0; |
4107 | for (i = 0; i < m->count; i ++) | |
4108 | { | |
540b09cb AM |
4109 | if ((m->sections[i]->flags & SEC_EXCLUDE) == 0 |
4110 | && ((m->sections[i]->flags & SEC_ALLOC) != 0 | |
4111 | || m->p_type != PT_LOAD)) | |
1ed89aa9 | 4112 | { |
47d9a591 | 4113 | if (i != new_count) |
1ed89aa9 NC |
4114 | m->sections[new_count] = m->sections[i]; |
4115 | ||
4116 | new_count ++; | |
4117 | } | |
4118 | } | |
4119 | ||
4120 | if (new_count != m->count) | |
4121 | m->count = new_count; | |
4122 | } | |
4123 | } | |
252b5132 RH |
4124 | |
4125 | if (bed->elf_backend_modify_segment_map) | |
4126 | { | |
c84fca4d | 4127 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 4128 | return FALSE; |
252b5132 RH |
4129 | } |
4130 | ||
4131 | count = 0; | |
4132 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4133 | ++count; | |
4134 | ||
4135 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4136 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
4137 | elf_elfheader (abfd)->e_phnum = count; | |
4138 | ||
4139 | if (count == 0) | |
0ebdbb83 BW |
4140 | { |
4141 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
4142 | return TRUE; | |
4143 | } | |
252b5132 RH |
4144 | |
4145 | /* If we already counted the number of program segments, make sure | |
4146 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
4147 | is used in a linker script. */ | |
4148 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
4149 | if (alloc != 0 && count > alloc) | |
4150 | { | |
4151 | ((*_bfd_error_handler) | |
b301b248 AM |
4152 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
4153 | abfd, alloc, count)); | |
cedc298e | 4154 | print_segment_map (abfd); |
252b5132 | 4155 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4156 | return FALSE; |
252b5132 RH |
4157 | } |
4158 | ||
4159 | if (alloc == 0) | |
4160 | alloc = count; | |
4161 | ||
d0fb9a8d | 4162 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
252b5132 | 4163 | if (phdrs == NULL) |
b34976b6 | 4164 | return FALSE; |
252b5132 RH |
4165 | |
4166 | off = bed->s->sizeof_ehdr; | |
4167 | off += alloc * bed->s->sizeof_phdr; | |
4168 | ||
4169 | filehdr_vaddr = 0; | |
4170 | filehdr_paddr = 0; | |
4171 | phdrs_vaddr = 0; | |
4172 | phdrs_paddr = 0; | |
4173 | ||
4174 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4175 | m != NULL; | |
4176 | m = m->next, p++) | |
4177 | { | |
4178 | unsigned int i; | |
4179 | asection **secpp; | |
4180 | ||
4181 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4182 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4183 | not be done to the PT_NOTE section of a corefile, which may |
4184 | contain several pseudo-sections artificially created by bfd. | |
4185 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4186 | if (m->count > 1 |
4187 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4188 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4189 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4190 | elf_sort_sections); | |
4191 | ||
b301b248 AM |
4192 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4193 | number of sections with contents contributing to both p_filesz | |
4194 | and p_memsz, followed by a number of sections with no contents | |
4195 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4196 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4197 | an adjustment we use for segments that have no file contents | |
4198 | but need zero filled memory allocation. */ | |
4199 | voff = 0; | |
252b5132 | 4200 | p->p_type = m->p_type; |
28a7f3e7 | 4201 | p->p_flags = m->p_flags; |
252b5132 RH |
4202 | |
4203 | if (p->p_type == PT_LOAD | |
b301b248 | 4204 | && m->count > 0) |
252b5132 | 4205 | { |
b301b248 AM |
4206 | bfd_size_type align; |
4207 | bfd_vma adjust; | |
a49e53ed | 4208 | unsigned int align_power = 0; |
b301b248 | 4209 | |
a49e53ed | 4210 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
252b5132 | 4211 | { |
a49e53ed | 4212 | unsigned int secalign; |
252b5132 | 4213 | |
a49e53ed AM |
4214 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4215 | if (secalign > align_power) | |
4216 | align_power = secalign; | |
b301b248 | 4217 | } |
a49e53ed AM |
4218 | align = (bfd_size_type) 1 << align_power; |
4219 | ||
4220 | if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > align) | |
4221 | align = bed->maxpagesize; | |
252b5132 | 4222 | |
b301b248 AM |
4223 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4224 | off += adjust; | |
4225 | if (adjust != 0 | |
4226 | && !m->includes_filehdr | |
4227 | && !m->includes_phdrs | |
4228 | && (ufile_ptr) off >= align) | |
4229 | { | |
4230 | /* If the first section isn't loadable, the same holds for | |
4231 | any other sections. Since the segment won't need file | |
4232 | space, we can make p_offset overlap some prior segment. | |
4233 | However, .tbss is special. If a segment starts with | |
4234 | .tbss, we need to look at the next section to decide | |
4235 | whether the segment has any loadable sections. */ | |
4236 | i = 0; | |
5efb6261 | 4237 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4238 | { |
4239 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4240 | || ++i >= m->count) | |
4241 | { | |
4242 | off -= adjust; | |
4243 | voff = adjust - align; | |
4244 | break; | |
4245 | } | |
4246 | } | |
252b5132 RH |
4247 | } |
4248 | } | |
b1a6d0b1 NC |
4249 | /* Make sure the .dynamic section is the first section in the |
4250 | PT_DYNAMIC segment. */ | |
4251 | else if (p->p_type == PT_DYNAMIC | |
4252 | && m->count > 1 | |
4253 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4254 | { | |
4255 | _bfd_error_handler | |
b301b248 AM |
4256 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4257 | abfd); | |
b1a6d0b1 NC |
4258 | bfd_set_error (bfd_error_bad_value); |
4259 | return FALSE; | |
4260 | } | |
252b5132 RH |
4261 | |
4262 | if (m->count == 0) | |
4263 | p->p_vaddr = 0; | |
4264 | else | |
4265 | p->p_vaddr = m->sections[0]->vma; | |
4266 | ||
4267 | if (m->p_paddr_valid) | |
4268 | p->p_paddr = m->p_paddr; | |
4269 | else if (m->count == 0) | |
4270 | p->p_paddr = 0; | |
4271 | else | |
4272 | p->p_paddr = m->sections[0]->lma; | |
4273 | ||
4274 | if (p->p_type == PT_LOAD | |
4275 | && (abfd->flags & D_PAGED) != 0) | |
4276 | p->p_align = bed->maxpagesize; | |
4277 | else if (m->count == 0) | |
45d6a902 | 4278 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4279 | else |
4280 | p->p_align = 0; | |
4281 | ||
4282 | p->p_offset = 0; | |
4283 | p->p_filesz = 0; | |
4284 | p->p_memsz = 0; | |
4285 | ||
4286 | if (m->includes_filehdr) | |
4287 | { | |
4288 | if (! m->p_flags_valid) | |
4289 | p->p_flags |= PF_R; | |
4290 | p->p_offset = 0; | |
4291 | p->p_filesz = bed->s->sizeof_ehdr; | |
4292 | p->p_memsz = bed->s->sizeof_ehdr; | |
4293 | if (m->count > 0) | |
4294 | { | |
4295 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4296 | ||
4297 | if (p->p_vaddr < (bfd_vma) off) | |
4298 | { | |
caf47ea6 | 4299 | (*_bfd_error_handler) |
b301b248 AM |
4300 | (_("%B: Not enough room for program headers, try linking with -N"), |
4301 | abfd); | |
252b5132 | 4302 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4303 | return FALSE; |
252b5132 RH |
4304 | } |
4305 | ||
4306 | p->p_vaddr -= off; | |
4307 | if (! m->p_paddr_valid) | |
4308 | p->p_paddr -= off; | |
4309 | } | |
4310 | if (p->p_type == PT_LOAD) | |
4311 | { | |
4312 | filehdr_vaddr = p->p_vaddr; | |
4313 | filehdr_paddr = p->p_paddr; | |
4314 | } | |
4315 | } | |
4316 | ||
4317 | if (m->includes_phdrs) | |
4318 | { | |
4319 | if (! m->p_flags_valid) | |
4320 | p->p_flags |= PF_R; | |
4321 | ||
4322 | if (m->includes_filehdr) | |
4323 | { | |
4324 | if (p->p_type == PT_LOAD) | |
4325 | { | |
4326 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4327 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4328 | } | |
4329 | } | |
4330 | else | |
4331 | { | |
4332 | p->p_offset = bed->s->sizeof_ehdr; | |
4333 | ||
4334 | if (m->count > 0) | |
4335 | { | |
4336 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4337 | p->p_vaddr -= off - p->p_offset; | |
4338 | if (! m->p_paddr_valid) | |
4339 | p->p_paddr -= off - p->p_offset; | |
4340 | } | |
4341 | ||
4342 | if (p->p_type == PT_LOAD) | |
4343 | { | |
4344 | phdrs_vaddr = p->p_vaddr; | |
4345 | phdrs_paddr = p->p_paddr; | |
4346 | } | |
4347 | else | |
4348 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4349 | } | |
4350 | ||
4351 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4352 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4353 | } | |
4354 | ||
4355 | if (p->p_type == PT_LOAD | |
4356 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4357 | { | |
4358 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4359 | p->p_offset = off + voff; |
252b5132 RH |
4360 | else |
4361 | { | |
4362 | file_ptr adjust; | |
4363 | ||
4364 | adjust = off - (p->p_offset + p->p_filesz); | |
4365 | p->p_filesz += adjust; | |
4366 | p->p_memsz += adjust; | |
4367 | } | |
4368 | } | |
4369 | ||
252b5132 RH |
4370 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4371 | { | |
4372 | asection *sec; | |
4373 | flagword flags; | |
4374 | bfd_size_type align; | |
4375 | ||
4376 | sec = *secpp; | |
4377 | flags = sec->flags; | |
4378 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4379 | ||
b301b248 AM |
4380 | if (p->p_type == PT_LOAD |
4381 | || p->p_type == PT_TLS) | |
252b5132 RH |
4382 | { |
4383 | bfd_signed_vma adjust; | |
4384 | ||
5efb6261 | 4385 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4386 | { |
b301b248 | 4387 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4388 | if (adjust < 0) |
b301b248 AM |
4389 | { |
4390 | (*_bfd_error_handler) | |
4391 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4392 | abfd, sec, (unsigned long) sec->lma); | |
4393 | adjust = 0; | |
4394 | } | |
4395 | off += adjust; | |
4396 | p->p_filesz += adjust; | |
4397 | p->p_memsz += adjust; | |
252b5132 | 4398 | } |
b301b248 AM |
4399 | /* .tbss is special. It doesn't contribute to p_memsz of |
4400 | normal segments. */ | |
4401 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4402 | || p->p_type == PT_TLS) | |
252b5132 RH |
4403 | { |
4404 | /* The section VMA must equal the file position | |
b301b248 AM |
4405 | modulo the page size. */ |
4406 | bfd_size_type page = align; | |
a49e53ed | 4407 | if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > page) |
b301b248 AM |
4408 | page = bed->maxpagesize; |
4409 | adjust = vma_page_aligned_bias (sec->vma, | |
4410 | p->p_vaddr + p->p_memsz, | |
4411 | page); | |
252b5132 | 4412 | p->p_memsz += adjust; |
252b5132 | 4413 | } |
252b5132 RH |
4414 | } |
4415 | ||
4416 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4417 | { | |
b301b248 AM |
4418 | /* The section at i == 0 is the one that actually contains |
4419 | everything. */ | |
4a938328 MS |
4420 | if (i == 0) |
4421 | { | |
252b5132 | 4422 | sec->filepos = off; |
eea6121a | 4423 | off += sec->size; |
b301b248 AM |
4424 | p->p_filesz = sec->size; |
4425 | p->p_memsz = 0; | |
4426 | p->p_align = 1; | |
252b5132 | 4427 | } |
4a938328 | 4428 | else |
252b5132 | 4429 | { |
b301b248 | 4430 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4431 | sec->filepos = 0; |
eea6121a | 4432 | sec->size = 0; |
b301b248 AM |
4433 | sec->flags = 0; |
4434 | continue; | |
252b5132 | 4435 | } |
252b5132 RH |
4436 | } |
4437 | else | |
4438 | { | |
b301b248 AM |
4439 | if (p->p_type == PT_LOAD) |
4440 | { | |
4441 | sec->filepos = off; | |
5efb6261 AM |
4442 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4443 | 1997, and the exact reason for it isn't clear. One | |
4444 | plausible explanation is that it is to work around | |
4445 | a problem we have with linker scripts using data | |
4446 | statements in NOLOAD sections. I don't think it | |
4447 | makes a great deal of sense to have such a section | |
4448 | assigned to a PT_LOAD segment, but apparently | |
4449 | people do this. The data statement results in a | |
4450 | bfd_data_link_order being built, and these need | |
4451 | section contents to write into. Eventually, we get | |
4452 | to _bfd_elf_write_object_contents which writes any | |
4453 | section with contents to the output. Make room | |
4454 | here for the write, so that following segments are | |
4455 | not trashed. */ | |
4456 | if ((flags & SEC_LOAD) != 0 | |
4457 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4458 | off += sec->size; |
4459 | } | |
252b5132 | 4460 | |
5efb6261 | 4461 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4462 | { |
4463 | p->p_filesz += sec->size; | |
4464 | p->p_memsz += sec->size; | |
4465 | } | |
4b6c0f2f NC |
4466 | /* PR ld/594: Sections in note segments which are not loaded |
4467 | contribute to the file size but not the in-memory size. */ | |
4468 | else if (p->p_type == PT_NOTE | |
4469 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4470 | p->p_filesz += sec->size; | |
4471 | ||
b301b248 AM |
4472 | /* .tbss is special. It doesn't contribute to p_memsz of |
4473 | normal segments. */ | |
4474 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4475 | || p->p_type == PT_TLS) | |
4476 | p->p_memsz += sec->size; | |
252b5132 | 4477 | |
13ae64f3 | 4478 | if (p->p_type == PT_TLS |
eea6121a | 4479 | && sec->size == 0 |
13ae64f3 JJ |
4480 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4481 | { | |
3a800eb9 AM |
4482 | struct bfd_link_order *o = sec->map_tail.link_order; |
4483 | if (o != NULL) | |
4484 | p->p_memsz += o->offset + o->size; | |
13ae64f3 JJ |
4485 | } |
4486 | ||
252b5132 RH |
4487 | if (align > p->p_align |
4488 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4489 | p->p_align = align; | |
4490 | } | |
4491 | ||
4492 | if (! m->p_flags_valid) | |
4493 | { | |
4494 | p->p_flags |= PF_R; | |
4495 | if ((flags & SEC_CODE) != 0) | |
4496 | p->p_flags |= PF_X; | |
4497 | if ((flags & SEC_READONLY) == 0) | |
4498 | p->p_flags |= PF_W; | |
4499 | } | |
4500 | } | |
4501 | } | |
4502 | ||
4503 | /* Now that we have set the section file positions, we can set up | |
4504 | the file positions for the non PT_LOAD segments. */ | |
4505 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4506 | m != NULL; | |
4507 | m = m->next, p++) | |
4508 | { | |
4509 | if (p->p_type != PT_LOAD && m->count > 0) | |
4510 | { | |
4511 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4512 | /* If the section has not yet been assigned a file position, |
4513 | do so now. The ARM BPABI requires that .dynamic section | |
4514 | not be marked SEC_ALLOC because it is not part of any | |
4515 | PT_LOAD segment, so it will not be processed above. */ | |
4516 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4517 | { | |
4518 | unsigned int i; | |
4519 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4520 | ||
4521 | i = 1; | |
4522 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4523 | ++i; | |
4524 | off = (_bfd_elf_assign_file_position_for_section | |
4525 | (i_shdrpp[i], off, TRUE)); | |
4526 | p->p_filesz = m->sections[0]->size; | |
4527 | } | |
252b5132 RH |
4528 | p->p_offset = m->sections[0]->filepos; |
4529 | } | |
4530 | if (m->count == 0) | |
4531 | { | |
4532 | if (m->includes_filehdr) | |
4533 | { | |
4534 | p->p_vaddr = filehdr_vaddr; | |
4535 | if (! m->p_paddr_valid) | |
4536 | p->p_paddr = filehdr_paddr; | |
4537 | } | |
4538 | else if (m->includes_phdrs) | |
4539 | { | |
4540 | p->p_vaddr = phdrs_vaddr; | |
4541 | if (! m->p_paddr_valid) | |
4542 | p->p_paddr = phdrs_paddr; | |
4543 | } | |
8c37241b JJ |
4544 | else if (p->p_type == PT_GNU_RELRO) |
4545 | { | |
4546 | Elf_Internal_Phdr *lp; | |
4547 | ||
4548 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4549 | { | |
4550 | if (lp->p_type == PT_LOAD | |
4551 | && lp->p_vaddr <= link_info->relro_end | |
4552 | && lp->p_vaddr >= link_info->relro_start | |
4553 | && lp->p_vaddr + lp->p_filesz | |
4554 | >= link_info->relro_end) | |
4555 | break; | |
4556 | } | |
4557 | ||
4558 | if (lp < phdrs + count | |
4559 | && link_info->relro_end > lp->p_vaddr) | |
4560 | { | |
4561 | p->p_vaddr = lp->p_vaddr; | |
4562 | p->p_paddr = lp->p_paddr; | |
4563 | p->p_offset = lp->p_offset; | |
4564 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4565 | p->p_memsz = p->p_filesz; | |
4566 | p->p_align = 1; | |
4567 | p->p_flags = (lp->p_flags & ~PF_W); | |
4568 | } | |
4569 | else | |
4570 | { | |
4571 | memset (p, 0, sizeof *p); | |
4572 | p->p_type = PT_NULL; | |
4573 | } | |
4574 | } | |
252b5132 RH |
4575 | } |
4576 | } | |
4577 | ||
4578 | /* Clear out any program headers we allocated but did not use. */ | |
4579 | for (; count < alloc; count++, p++) | |
4580 | { | |
4581 | memset (p, 0, sizeof *p); | |
4582 | p->p_type = PT_NULL; | |
4583 | } | |
4584 | ||
4585 | elf_tdata (abfd)->phdr = phdrs; | |
4586 | ||
4587 | elf_tdata (abfd)->next_file_pos = off; | |
4588 | ||
4589 | /* Write out the program headers. */ | |
dc810e39 | 4590 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4591 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4592 | return FALSE; |
252b5132 | 4593 | |
b34976b6 | 4594 | return TRUE; |
252b5132 RH |
4595 | } |
4596 | ||
4597 | /* Get the size of the program header. | |
4598 | ||
4599 | If this is called by the linker before any of the section VMA's are set, it | |
4600 | can't calculate the correct value for a strange memory layout. This only | |
4601 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4602 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4603 | data segment (exclusive of .interp and .dynamic). | |
4604 | ||
4605 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4606 | will be two segments. */ | |
4607 | ||
4608 | static bfd_size_type | |
217aa764 | 4609 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4610 | { |
4611 | size_t segs; | |
4612 | asection *s; | |
9c5bfbb7 | 4613 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4614 | |
4615 | /* We can't return a different result each time we're called. */ | |
4616 | if (elf_tdata (abfd)->program_header_size != 0) | |
4617 | return elf_tdata (abfd)->program_header_size; | |
4618 | ||
4619 | if (elf_tdata (abfd)->segment_map != NULL) | |
4620 | { | |
4621 | struct elf_segment_map *m; | |
4622 | ||
4623 | segs = 0; | |
4624 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4625 | ++segs; | |
4626 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4627 | return elf_tdata (abfd)->program_header_size; | |
4628 | } | |
4629 | ||
4630 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4631 | and one for data. */ | |
4632 | segs = 2; | |
4633 | ||
4634 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4635 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4636 | { | |
4637 | /* If we have a loadable interpreter section, we need a | |
4638 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4639 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4640 | targets. */ |
4641 | segs += 2; | |
4642 | } | |
4643 | ||
4644 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4645 | { | |
4646 | /* We need a PT_DYNAMIC segment. */ | |
4647 | ++segs; | |
4648 | } | |
4649 | ||
126495ed | 4650 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4651 | { |
4652 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4653 | ++segs; | |
4654 | } | |
4655 | ||
9ee5e499 JJ |
4656 | if (elf_tdata (abfd)->stack_flags) |
4657 | { | |
4658 | /* We need a PT_GNU_STACK segment. */ | |
4659 | ++segs; | |
4660 | } | |
4661 | ||
8c37241b JJ |
4662 | if (elf_tdata (abfd)->relro) |
4663 | { | |
4664 | /* We need a PT_GNU_RELRO segment. */ | |
4665 | ++segs; | |
4666 | } | |
4667 | ||
252b5132 RH |
4668 | for (s = abfd->sections; s != NULL; s = s->next) |
4669 | { | |
4670 | if ((s->flags & SEC_LOAD) != 0 | |
4671 | && strncmp (s->name, ".note", 5) == 0) | |
4672 | { | |
4673 | /* We need a PT_NOTE segment. */ | |
4674 | ++segs; | |
4675 | } | |
4676 | } | |
4677 | ||
13ae64f3 JJ |
4678 | for (s = abfd->sections; s != NULL; s = s->next) |
4679 | { | |
4680 | if (s->flags & SEC_THREAD_LOCAL) | |
4681 | { | |
4682 | /* We need a PT_TLS segment. */ | |
4683 | ++segs; | |
4684 | break; | |
4685 | } | |
4686 | } | |
4687 | ||
252b5132 RH |
4688 | /* Let the backend count up any program headers it might need. */ |
4689 | if (bed->elf_backend_additional_program_headers) | |
4690 | { | |
4691 | int a; | |
4692 | ||
4693 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4694 | if (a == -1) | |
4695 | abort (); | |
4696 | segs += a; | |
4697 | } | |
4698 | ||
4699 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4700 | return elf_tdata (abfd)->program_header_size; | |
4701 | } | |
4702 | ||
4703 | /* Work out the file positions of all the sections. This is called by | |
4704 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4705 | VMAs must be known before this is called. | |
4706 | ||
e0638f70 AM |
4707 | Reloc sections come in two flavours: Those processed specially as |
4708 | "side-channel" data attached to a section to which they apply, and | |
4709 | those that bfd doesn't process as relocations. The latter sort are | |
4710 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4711 | consider the former sort here, unless they form part of the loadable | |
4712 | image. Reloc sections not assigned here will be handled later by | |
4713 | assign_file_positions_for_relocs. | |
252b5132 RH |
4714 | |
4715 | We also don't set the positions of the .symtab and .strtab here. */ | |
4716 | ||
b34976b6 | 4717 | static bfd_boolean |
c84fca4d AO |
4718 | assign_file_positions_except_relocs (bfd *abfd, |
4719 | struct bfd_link_info *link_info) | |
252b5132 RH |
4720 | { |
4721 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4722 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4723 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4724 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4725 | file_ptr off; |
9c5bfbb7 | 4726 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4727 | |
4728 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4729 | && bfd_get_format (abfd) != bfd_core) | |
4730 | { | |
4731 | Elf_Internal_Shdr **hdrpp; | |
4732 | unsigned int i; | |
4733 | ||
4734 | /* Start after the ELF header. */ | |
4735 | off = i_ehdrp->e_ehsize; | |
4736 | ||
4737 | /* We are not creating an executable, which means that we are | |
4738 | not creating a program header, and that the actual order of | |
4739 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4740 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4741 | { |
4742 | Elf_Internal_Shdr *hdr; | |
4743 | ||
4744 | hdr = *hdrpp; | |
e0638f70 AM |
4745 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4746 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4747 | || i == tdata->symtab_section |
4748 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4749 | || i == tdata->strtab_section) |
4750 | { | |
4751 | hdr->sh_offset = -1; | |
252b5132 | 4752 | } |
9ad5cbcf | 4753 | else |
b34976b6 | 4754 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4755 | |
9ad5cbcf AM |
4756 | if (i == SHN_LORESERVE - 1) |
4757 | { | |
4758 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4759 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4760 | } | |
252b5132 RH |
4761 | } |
4762 | } | |
4763 | else | |
4764 | { | |
4765 | unsigned int i; | |
4766 | Elf_Internal_Shdr **hdrpp; | |
4767 | ||
4768 | /* Assign file positions for the loaded sections based on the | |
4769 | assignment of sections to segments. */ | |
c84fca4d | 4770 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4771 | return FALSE; |
252b5132 RH |
4772 | |
4773 | /* Assign file positions for the other sections. */ | |
4774 | ||
4775 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4776 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4777 | { |
4778 | Elf_Internal_Shdr *hdr; | |
4779 | ||
4780 | hdr = *hdrpp; | |
4781 | if (hdr->bfd_section != NULL | |
4782 | && hdr->bfd_section->filepos != 0) | |
4783 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4784 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4785 | { | |
4786 | ((*_bfd_error_handler) | |
b301b248 AM |
4787 | (_("%B: warning: allocated section `%s' not in segment"), |
4788 | abfd, | |
252b5132 RH |
4789 | (hdr->bfd_section == NULL |
4790 | ? "*unknown*" | |
4791 | : hdr->bfd_section->name))); | |
4792 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4793 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4794 | bed->maxpagesize); | |
252b5132 | 4795 | else |
340b6d91 AC |
4796 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4797 | hdr->sh_addralign); | |
252b5132 | 4798 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4799 | FALSE); |
252b5132 | 4800 | } |
e0638f70 AM |
4801 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4802 | && hdr->bfd_section == NULL) | |
252b5132 | 4803 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4804 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4805 | || hdr == i_shdrpp[tdata->strtab_section]) |
4806 | hdr->sh_offset = -1; | |
4807 | else | |
b34976b6 | 4808 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4809 | |
4810 | if (i == SHN_LORESERVE - 1) | |
4811 | { | |
4812 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4813 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4814 | } | |
252b5132 RH |
4815 | } |
4816 | } | |
4817 | ||
4818 | /* Place the section headers. */ | |
45d6a902 | 4819 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4820 | i_ehdrp->e_shoff = off; |
4821 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4822 | ||
4823 | elf_tdata (abfd)->next_file_pos = off; | |
4824 | ||
b34976b6 | 4825 | return TRUE; |
252b5132 RH |
4826 | } |
4827 | ||
b34976b6 | 4828 | static bfd_boolean |
217aa764 | 4829 | prep_headers (bfd *abfd) |
252b5132 RH |
4830 | { |
4831 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4832 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4833 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4834 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4835 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4836 | |
4837 | i_ehdrp = elf_elfheader (abfd); | |
4838 | i_shdrp = elf_elfsections (abfd); | |
4839 | ||
2b0f7ef9 | 4840 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4841 | if (shstrtab == NULL) |
b34976b6 | 4842 | return FALSE; |
252b5132 RH |
4843 | |
4844 | elf_shstrtab (abfd) = shstrtab; | |
4845 | ||
4846 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4847 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4848 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4849 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4850 | ||
4851 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4852 | i_ehdrp->e_ident[EI_DATA] = | |
4853 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4854 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4855 | ||
252b5132 RH |
4856 | if ((abfd->flags & DYNAMIC) != 0) |
4857 | i_ehdrp->e_type = ET_DYN; | |
4858 | else if ((abfd->flags & EXEC_P) != 0) | |
4859 | i_ehdrp->e_type = ET_EXEC; | |
4860 | else if (bfd_get_format (abfd) == bfd_core) | |
4861 | i_ehdrp->e_type = ET_CORE; | |
4862 | else | |
4863 | i_ehdrp->e_type = ET_REL; | |
4864 | ||
4865 | switch (bfd_get_arch (abfd)) | |
4866 | { | |
4867 | case bfd_arch_unknown: | |
4868 | i_ehdrp->e_machine = EM_NONE; | |
4869 | break; | |
aa4f99bb AO |
4870 | |
4871 | /* There used to be a long list of cases here, each one setting | |
4872 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4873 | in the corresponding bfd definition. To avoid duplication, | |
4874 | the switch was removed. Machines that need special handling | |
4875 | can generally do it in elf_backend_final_write_processing(), | |
4876 | unless they need the information earlier than the final write. | |
4877 | Such need can generally be supplied by replacing the tests for | |
4878 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4879 | default: |
9c5bfbb7 AM |
4880 | i_ehdrp->e_machine = bed->elf_machine_code; |
4881 | } | |
aa4f99bb | 4882 | |
252b5132 RH |
4883 | i_ehdrp->e_version = bed->s->ev_current; |
4884 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4885 | ||
c044fabd | 4886 | /* No program header, for now. */ |
252b5132 RH |
4887 | i_ehdrp->e_phoff = 0; |
4888 | i_ehdrp->e_phentsize = 0; | |
4889 | i_ehdrp->e_phnum = 0; | |
4890 | ||
c044fabd | 4891 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4892 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4893 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4894 | ||
c044fabd | 4895 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4896 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4897 | /* It all happens later. */ |
4898 | ; | |
252b5132 RH |
4899 | else |
4900 | { | |
4901 | i_ehdrp->e_phentsize = 0; | |
4902 | i_phdrp = 0; | |
4903 | i_ehdrp->e_phoff = 0; | |
4904 | } | |
4905 | ||
4906 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4907 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4908 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4909 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4910 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4911 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4912 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4913 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4914 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4915 | return FALSE; |
252b5132 | 4916 | |
b34976b6 | 4917 | return TRUE; |
252b5132 RH |
4918 | } |
4919 | ||
4920 | /* Assign file positions for all the reloc sections which are not part | |
4921 | of the loadable file image. */ | |
4922 | ||
4923 | void | |
217aa764 | 4924 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4925 | { |
4926 | file_ptr off; | |
9ad5cbcf | 4927 | unsigned int i, num_sec; |
252b5132 RH |
4928 | Elf_Internal_Shdr **shdrpp; |
4929 | ||
4930 | off = elf_tdata (abfd)->next_file_pos; | |
4931 | ||
9ad5cbcf AM |
4932 | num_sec = elf_numsections (abfd); |
4933 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4934 | { |
4935 | Elf_Internal_Shdr *shdrp; | |
4936 | ||
4937 | shdrp = *shdrpp; | |
4938 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4939 | && shdrp->sh_offset == -1) | |
b34976b6 | 4940 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4941 | } |
4942 | ||
4943 | elf_tdata (abfd)->next_file_pos = off; | |
4944 | } | |
4945 | ||
b34976b6 | 4946 | bfd_boolean |
217aa764 | 4947 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4948 | { |
9c5bfbb7 | 4949 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4950 | Elf_Internal_Ehdr *i_ehdrp; |
4951 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4952 | bfd_boolean failed; |
9ad5cbcf | 4953 | unsigned int count, num_sec; |
252b5132 RH |
4954 | |
4955 | if (! abfd->output_has_begun | |
217aa764 | 4956 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4957 | return FALSE; |
252b5132 RH |
4958 | |
4959 | i_shdrp = elf_elfsections (abfd); | |
4960 | i_ehdrp = elf_elfheader (abfd); | |
4961 | ||
b34976b6 | 4962 | failed = FALSE; |
252b5132 RH |
4963 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4964 | if (failed) | |
b34976b6 | 4965 | return FALSE; |
252b5132 RH |
4966 | |
4967 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4968 | ||
c044fabd | 4969 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4970 | num_sec = elf_numsections (abfd); |
4971 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4972 | { |
4973 | if (bed->elf_backend_section_processing) | |
4974 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4975 | if (i_shdrp[count]->contents) | |
4976 | { | |
dc810e39 AM |
4977 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4978 | ||
252b5132 | 4979 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4980 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4981 | return FALSE; |
252b5132 | 4982 | } |
9ad5cbcf AM |
4983 | if (count == SHN_LORESERVE - 1) |
4984 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4985 | } |
4986 | ||
4987 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4988 | if (elf_shstrtab (abfd) != NULL |
4989 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
4990 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 4991 | return FALSE; |
252b5132 RH |
4992 | |
4993 | if (bed->elf_backend_final_write_processing) | |
4994 | (*bed->elf_backend_final_write_processing) (abfd, | |
4995 | elf_tdata (abfd)->linker); | |
4996 | ||
4997 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4998 | } | |
4999 | ||
b34976b6 | 5000 | bfd_boolean |
217aa764 | 5001 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 5002 | { |
c044fabd | 5003 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
5004 | return _bfd_elf_write_object_contents (abfd); |
5005 | } | |
c044fabd KH |
5006 | |
5007 | /* Given a section, search the header to find them. */ | |
5008 | ||
252b5132 | 5009 | int |
198beae2 | 5010 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 5011 | { |
9c5bfbb7 | 5012 | const struct elf_backend_data *bed; |
252b5132 | 5013 | int index; |
252b5132 | 5014 | |
9ad5cbcf AM |
5015 | if (elf_section_data (asect) != NULL |
5016 | && elf_section_data (asect)->this_idx != 0) | |
5017 | return elf_section_data (asect)->this_idx; | |
5018 | ||
5019 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
5020 | index = SHN_ABS; |
5021 | else if (bfd_is_com_section (asect)) | |
5022 | index = SHN_COMMON; | |
5023 | else if (bfd_is_und_section (asect)) | |
5024 | index = SHN_UNDEF; | |
5025 | else | |
6dc132d9 | 5026 | index = -1; |
252b5132 | 5027 | |
af746e92 | 5028 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
5029 | if (bed->elf_backend_section_from_bfd_section) |
5030 | { | |
af746e92 | 5031 | int retval = index; |
9ad5cbcf | 5032 | |
af746e92 AM |
5033 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
5034 | return retval; | |
252b5132 RH |
5035 | } |
5036 | ||
af746e92 AM |
5037 | if (index == -1) |
5038 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 5039 | |
af746e92 | 5040 | return index; |
252b5132 RH |
5041 | } |
5042 | ||
5043 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5044 | on error. */ | |
5045 | ||
5046 | int | |
217aa764 | 5047 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5048 | { |
5049 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5050 | int idx; | |
5051 | flagword flags = asym_ptr->flags; | |
5052 | ||
5053 | /* When gas creates relocations against local labels, it creates its | |
5054 | own symbol for the section, but does put the symbol into the | |
5055 | symbol chain, so udata is 0. When the linker is generating | |
5056 | relocatable output, this section symbol may be for one of the | |
5057 | input sections rather than the output section. */ | |
5058 | if (asym_ptr->udata.i == 0 | |
5059 | && (flags & BSF_SECTION_SYM) | |
5060 | && asym_ptr->section) | |
5061 | { | |
5062 | int indx; | |
5063 | ||
5064 | if (asym_ptr->section->output_section != NULL) | |
5065 | indx = asym_ptr->section->output_section->index; | |
5066 | else | |
5067 | indx = asym_ptr->section->index; | |
4e89ac30 L |
5068 | if (indx < elf_num_section_syms (abfd) |
5069 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
5070 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5071 | } | |
5072 | ||
5073 | idx = asym_ptr->udata.i; | |
5074 | ||
5075 | if (idx == 0) | |
5076 | { | |
5077 | /* This case can occur when using --strip-symbol on a symbol | |
5078 | which is used in a relocation entry. */ | |
5079 | (*_bfd_error_handler) | |
d003868e AM |
5080 | (_("%B: symbol `%s' required but not present"), |
5081 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5082 | bfd_set_error (bfd_error_no_symbols); |
5083 | return -1; | |
5084 | } | |
5085 | ||
5086 | #if DEBUG & 4 | |
5087 | { | |
5088 | fprintf (stderr, | |
661a3fd4 | 5089 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5090 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5091 | elf_symbol_flags (flags)); | |
5092 | fflush (stderr); | |
5093 | } | |
5094 | #endif | |
5095 | ||
5096 | return idx; | |
5097 | } | |
5098 | ||
84d1d650 | 5099 | /* Rewrite program header information. */ |
252b5132 | 5100 | |
b34976b6 | 5101 | static bfd_boolean |
84d1d650 | 5102 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5103 | { |
b34976b6 AM |
5104 | Elf_Internal_Ehdr *iehdr; |
5105 | struct elf_segment_map *map; | |
5106 | struct elf_segment_map *map_first; | |
5107 | struct elf_segment_map **pointer_to_map; | |
5108 | Elf_Internal_Phdr *segment; | |
5109 | asection *section; | |
5110 | unsigned int i; | |
5111 | unsigned int num_segments; | |
5112 | bfd_boolean phdr_included = FALSE; | |
5113 | bfd_vma maxpagesize; | |
5114 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5115 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5116 | const struct elf_backend_data *bed; |
bc67d8a6 | 5117 | |
caf47ea6 | 5118 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5119 | iehdr = elf_elfheader (ibfd); |
5120 | ||
bc67d8a6 | 5121 | map_first = NULL; |
c044fabd | 5122 | pointer_to_map = &map_first; |
252b5132 RH |
5123 | |
5124 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5125 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5126 | ||
5127 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5128 | #define SEGMENT_END(segment, start) \ |
5129 | (start + (segment->p_memsz > segment->p_filesz \ | |
5130 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5131 | |
eecdbe52 JJ |
5132 | #define SECTION_SIZE(section, segment) \ |
5133 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5134 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5135 | ? section->size : 0) |
eecdbe52 | 5136 | |
b34976b6 | 5137 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5138 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5139 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5140 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5141 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5142 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5143 | |
b34976b6 | 5144 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5145 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5146 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5147 | (section->lma >= base \ | |
eecdbe52 | 5148 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5149 | <= SEGMENT_END (segment, base))) |
252b5132 | 5150 | |
c044fabd | 5151 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5152 | #define IS_COREFILE_NOTE(p, s) \ |
5153 | (p->p_type == PT_NOTE \ | |
5154 | && bfd_get_format (ibfd) == bfd_core \ | |
5155 | && s->vma == 0 && s->lma == 0 \ | |
5156 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5157 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5158 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5159 | |
5160 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5161 | linker, which generates a PT_INTERP section with p_vaddr and | |
5162 | p_memsz set to 0. */ | |
aecc8f8a AM |
5163 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5164 | (p->p_vaddr == 0 \ | |
5165 | && p->p_paddr == 0 \ | |
5166 | && p->p_memsz == 0 \ | |
5167 | && p->p_filesz > 0 \ | |
5168 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5169 | && s->size > 0 \ |
aecc8f8a | 5170 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5171 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5172 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5173 | |
bc67d8a6 NC |
5174 | /* Decide if the given section should be included in the given segment. |
5175 | A section will be included if: | |
f5ffc919 NC |
5176 | 1. It is within the address space of the segment -- we use the LMA |
5177 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5178 | 2. It is an allocated segment, |
5179 | 3. There is an output section associated with it, | |
eecdbe52 | 5180 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5181 | 5. PT_GNU_STACK segments do not include any sections. |
5182 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5183 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5184 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5185 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5186 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5187 | ((((segment->p_paddr \ |
5188 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5189 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5190 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5191 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5192 | && section->output_section != NULL \ |
03394ac9 | 5193 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5194 | && (segment->p_type != PT_TLS \ |
5195 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5196 | && (segment->p_type == PT_LOAD \ | |
5197 | || segment->p_type == PT_TLS \ | |
5198 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5199 | && (segment->p_type != PT_DYNAMIC \ |
5200 | || SECTION_SIZE (section, segment) > 0 \ | |
5201 | || (segment->p_paddr \ | |
5202 | ? segment->p_paddr != section->lma \ | |
5203 | : segment->p_vaddr != section->vma) \ | |
5204 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5205 | == 0)) \ | |
82e51918 | 5206 | && ! section->segment_mark) |
bc67d8a6 | 5207 | |
b34976b6 | 5208 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5209 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5210 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5211 | ||
5212 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5213 | their VMA address ranges and their LMA address ranges overlap. | |
5214 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5215 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5216 | to the same VMA range, but with the .data section mapped to a different | |
5217 | LMA. */ | |
aecc8f8a | 5218 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5219 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5220 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5221 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5222 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5223 | |
5224 | /* Initialise the segment mark field. */ | |
5225 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5226 | section->segment_mark = FALSE; |
bc67d8a6 | 5227 | |
252b5132 | 5228 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5229 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5230 | in the loadable segments. These can be created by weird |
aecc8f8a | 5231 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5232 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5233 | i < num_segments; | |
c044fabd | 5234 | i++, segment++) |
252b5132 | 5235 | { |
252b5132 | 5236 | unsigned int j; |
c044fabd | 5237 | Elf_Internal_Phdr *segment2; |
252b5132 | 5238 | |
aecc8f8a AM |
5239 | if (segment->p_type == PT_INTERP) |
5240 | for (section = ibfd->sections; section; section = section->next) | |
5241 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5242 | { | |
5243 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5244 | assignment code will work. */ |
aecc8f8a AM |
5245 | segment->p_vaddr = section->vma; |
5246 | break; | |
5247 | } | |
5248 | ||
bc67d8a6 NC |
5249 | if (segment->p_type != PT_LOAD) |
5250 | continue; | |
c044fabd | 5251 | |
bc67d8a6 | 5252 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5253 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5254 | { |
5255 | bfd_signed_vma extra_length; | |
c044fabd | 5256 | |
bc67d8a6 NC |
5257 | if (segment2->p_type != PT_LOAD |
5258 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5259 | continue; | |
c044fabd | 5260 | |
bc67d8a6 NC |
5261 | /* Merge the two segments together. */ |
5262 | if (segment2->p_vaddr < segment->p_vaddr) | |
5263 | { | |
c044fabd KH |
5264 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5265 | SEGMENT. */ | |
bc67d8a6 NC |
5266 | extra_length = |
5267 | SEGMENT_END (segment, segment->p_vaddr) | |
5268 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5269 | |
bc67d8a6 NC |
5270 | if (extra_length > 0) |
5271 | { | |
5272 | segment2->p_memsz += extra_length; | |
5273 | segment2->p_filesz += extra_length; | |
5274 | } | |
c044fabd | 5275 | |
bc67d8a6 | 5276 | segment->p_type = PT_NULL; |
c044fabd | 5277 | |
bc67d8a6 NC |
5278 | /* Since we have deleted P we must restart the outer loop. */ |
5279 | i = 0; | |
5280 | segment = elf_tdata (ibfd)->phdr; | |
5281 | break; | |
5282 | } | |
5283 | else | |
5284 | { | |
c044fabd KH |
5285 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5286 | SEGMENT2. */ | |
bc67d8a6 NC |
5287 | extra_length = |
5288 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5289 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5290 | |
bc67d8a6 NC |
5291 | if (extra_length > 0) |
5292 | { | |
5293 | segment->p_memsz += extra_length; | |
5294 | segment->p_filesz += extra_length; | |
5295 | } | |
c044fabd | 5296 | |
bc67d8a6 NC |
5297 | segment2->p_type = PT_NULL; |
5298 | } | |
5299 | } | |
5300 | } | |
c044fabd | 5301 | |
bc67d8a6 NC |
5302 | /* The second scan attempts to assign sections to segments. */ |
5303 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5304 | i < num_segments; | |
5305 | i ++, segment ++) | |
5306 | { | |
5307 | unsigned int section_count; | |
5308 | asection ** sections; | |
5309 | asection * output_section; | |
5310 | unsigned int isec; | |
5311 | bfd_vma matching_lma; | |
5312 | bfd_vma suggested_lma; | |
5313 | unsigned int j; | |
dc810e39 | 5314 | bfd_size_type amt; |
bc67d8a6 NC |
5315 | |
5316 | if (segment->p_type == PT_NULL) | |
5317 | continue; | |
c044fabd | 5318 | |
bc67d8a6 | 5319 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5320 | for (section = ibfd->sections, section_count = 0; |
5321 | section != NULL; | |
5322 | section = section->next) | |
caf47ea6 | 5323 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5324 | ++section_count; |
811072d8 | 5325 | |
b5f852ea NC |
5326 | /* Allocate a segment map big enough to contain |
5327 | all of the sections we have selected. */ | |
dc810e39 AM |
5328 | amt = sizeof (struct elf_segment_map); |
5329 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5330 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5331 | if (map == NULL) |
b34976b6 | 5332 | return FALSE; |
252b5132 RH |
5333 | |
5334 | /* Initialise the fields of the segment map. Default to | |
5335 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5336 | map->next = NULL; |
5337 | map->p_type = segment->p_type; | |
5338 | map->p_flags = segment->p_flags; | |
5339 | map->p_flags_valid = 1; | |
5340 | map->p_paddr = segment->p_paddr; | |
5341 | map->p_paddr_valid = 1; | |
252b5132 RH |
5342 | |
5343 | /* Determine if this segment contains the ELF file header | |
5344 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5345 | map->includes_filehdr = (segment->p_offset == 0 |
5346 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5347 | |
bc67d8a6 | 5348 | map->includes_phdrs = 0; |
252b5132 | 5349 | |
bc67d8a6 | 5350 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5351 | { |
bc67d8a6 NC |
5352 | map->includes_phdrs = |
5353 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5354 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5355 | >= ((bfd_vma) iehdr->e_phoff |
5356 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5357 | |
bc67d8a6 | 5358 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5359 | phdr_included = TRUE; |
252b5132 RH |
5360 | } |
5361 | ||
bc67d8a6 | 5362 | if (section_count == 0) |
252b5132 RH |
5363 | { |
5364 | /* Special segments, such as the PT_PHDR segment, may contain | |
5365 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5366 | something. They are allowed by the ELF spec however, so only |
5367 | a warning is produced. */ | |
bc67d8a6 | 5368 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5369 | (*_bfd_error_handler) |
d003868e AM |
5370 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5371 | ibfd); | |
252b5132 | 5372 | |
bc67d8a6 | 5373 | map->count = 0; |
c044fabd KH |
5374 | *pointer_to_map = map; |
5375 | pointer_to_map = &map->next; | |
252b5132 RH |
5376 | |
5377 | continue; | |
5378 | } | |
5379 | ||
5380 | /* Now scan the sections in the input BFD again and attempt | |
5381 | to add their corresponding output sections to the segment map. | |
5382 | The problem here is how to handle an output section which has | |
5383 | been moved (ie had its LMA changed). There are four possibilities: | |
5384 | ||
5385 | 1. None of the sections have been moved. | |
5386 | In this case we can continue to use the segment LMA from the | |
5387 | input BFD. | |
5388 | ||
5389 | 2. All of the sections have been moved by the same amount. | |
5390 | In this case we can change the segment's LMA to match the LMA | |
5391 | of the first section. | |
5392 | ||
5393 | 3. Some of the sections have been moved, others have not. | |
5394 | In this case those sections which have not been moved can be | |
5395 | placed in the current segment which will have to have its size, | |
5396 | and possibly its LMA changed, and a new segment or segments will | |
5397 | have to be created to contain the other sections. | |
5398 | ||
b5f852ea | 5399 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5400 | In this case we can change the segment's LMA to match the LMA |
5401 | of the first section and we will have to create a new segment | |
5402 | or segments to contain the other sections. | |
5403 | ||
5404 | In order to save time, we allocate an array to hold the section | |
5405 | pointers that we are interested in. As these sections get assigned | |
5406 | to a segment, they are removed from this array. */ | |
5407 | ||
0b14c2aa L |
5408 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5409 | to work around this long long bug. */ | |
d0fb9a8d | 5410 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5411 | if (sections == NULL) |
b34976b6 | 5412 | return FALSE; |
252b5132 RH |
5413 | |
5414 | /* Step One: Scan for segment vs section LMA conflicts. | |
5415 | Also add the sections to the section array allocated above. | |
5416 | Also add the sections to the current segment. In the common | |
5417 | case, where the sections have not been moved, this means that | |
5418 | we have completely filled the segment, and there is nothing | |
5419 | more to do. */ | |
252b5132 | 5420 | isec = 0; |
72730e0c | 5421 | matching_lma = 0; |
252b5132 RH |
5422 | suggested_lma = 0; |
5423 | ||
bc67d8a6 NC |
5424 | for (j = 0, section = ibfd->sections; |
5425 | section != NULL; | |
5426 | section = section->next) | |
252b5132 | 5427 | { |
caf47ea6 | 5428 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5429 | { |
bc67d8a6 NC |
5430 | output_section = section->output_section; |
5431 | ||
5432 | sections[j ++] = section; | |
252b5132 RH |
5433 | |
5434 | /* The Solaris native linker always sets p_paddr to 0. | |
5435 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5436 | correct value. Note - some backends require that |
5437 | p_paddr be left as zero. */ | |
bc67d8a6 | 5438 | if (segment->p_paddr == 0 |
4455705d | 5439 | && segment->p_vaddr != 0 |
5e8d7549 | 5440 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5441 | && isec == 0 |
bc67d8a6 NC |
5442 | && output_section->lma != 0 |
5443 | && (output_section->vma == (segment->p_vaddr | |
5444 | + (map->includes_filehdr | |
5445 | ? iehdr->e_ehsize | |
5446 | : 0) | |
5447 | + (map->includes_phdrs | |
079e9a2f AM |
5448 | ? (iehdr->e_phnum |
5449 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5450 | : 0)))) |
5451 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5452 | |
5453 | /* Match up the physical address of the segment with the | |
5454 | LMA address of the output section. */ | |
bc67d8a6 | 5455 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5456 | || IS_COREFILE_NOTE (segment, section) |
5457 | || (bed->want_p_paddr_set_to_zero && | |
5458 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5459 | ) | |
252b5132 RH |
5460 | { |
5461 | if (matching_lma == 0) | |
bc67d8a6 | 5462 | matching_lma = output_section->lma; |
252b5132 RH |
5463 | |
5464 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5465 | then it does not overlap any other section within that |
252b5132 | 5466 | segment. */ |
bc67d8a6 | 5467 | map->sections[isec ++] = output_section; |
252b5132 RH |
5468 | } |
5469 | else if (suggested_lma == 0) | |
bc67d8a6 | 5470 | suggested_lma = output_section->lma; |
252b5132 RH |
5471 | } |
5472 | } | |
5473 | ||
bc67d8a6 | 5474 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5475 | |
5476 | /* Step Two: Adjust the physical address of the current segment, | |
5477 | if necessary. */ | |
bc67d8a6 | 5478 | if (isec == section_count) |
252b5132 RH |
5479 | { |
5480 | /* All of the sections fitted within the segment as currently | |
5481 | specified. This is the default case. Add the segment to | |
5482 | the list of built segments and carry on to process the next | |
5483 | program header in the input BFD. */ | |
bc67d8a6 | 5484 | map->count = section_count; |
c044fabd KH |
5485 | *pointer_to_map = map; |
5486 | pointer_to_map = &map->next; | |
252b5132 RH |
5487 | |
5488 | free (sections); | |
5489 | continue; | |
5490 | } | |
252b5132 RH |
5491 | else |
5492 | { | |
72730e0c AM |
5493 | if (matching_lma != 0) |
5494 | { | |
5495 | /* At least one section fits inside the current segment. | |
5496 | Keep it, but modify its physical address to match the | |
5497 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5498 | map->p_paddr = matching_lma; |
72730e0c AM |
5499 | } |
5500 | else | |
5501 | { | |
5502 | /* None of the sections fitted inside the current segment. | |
5503 | Change the current segment's physical address to match | |
5504 | the LMA of the first section. */ | |
bc67d8a6 | 5505 | map->p_paddr = suggested_lma; |
72730e0c AM |
5506 | } |
5507 | ||
bc67d8a6 NC |
5508 | /* Offset the segment physical address from the lma |
5509 | to allow for space taken up by elf headers. */ | |
5510 | if (map->includes_filehdr) | |
5511 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5512 | |
bc67d8a6 NC |
5513 | if (map->includes_phdrs) |
5514 | { | |
5515 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5516 | ||
5517 | /* iehdr->e_phnum is just an estimate of the number | |
5518 | of program headers that we will need. Make a note | |
5519 | here of the number we used and the segment we chose | |
5520 | to hold these headers, so that we can adjust the | |
5521 | offset when we know the correct value. */ | |
5522 | phdr_adjust_num = iehdr->e_phnum; | |
5523 | phdr_adjust_seg = map; | |
5524 | } | |
252b5132 RH |
5525 | } |
5526 | ||
5527 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5528 | those that fit to the current segment and removing them from the |
252b5132 RH |
5529 | sections array; but making sure not to leave large gaps. Once all |
5530 | possible sections have been assigned to the current segment it is | |
5531 | added to the list of built segments and if sections still remain | |
5532 | to be assigned, a new segment is constructed before repeating | |
5533 | the loop. */ | |
5534 | isec = 0; | |
5535 | do | |
5536 | { | |
bc67d8a6 | 5537 | map->count = 0; |
252b5132 RH |
5538 | suggested_lma = 0; |
5539 | ||
5540 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5541 | for (j = 0; j < section_count; j++) |
252b5132 | 5542 | { |
bc67d8a6 | 5543 | section = sections[j]; |
252b5132 | 5544 | |
bc67d8a6 | 5545 | if (section == NULL) |
252b5132 RH |
5546 | continue; |
5547 | ||
bc67d8a6 | 5548 | output_section = section->output_section; |
252b5132 | 5549 | |
bc67d8a6 | 5550 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5551 | |
bc67d8a6 NC |
5552 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5553 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5554 | { |
bc67d8a6 | 5555 | if (map->count == 0) |
252b5132 RH |
5556 | { |
5557 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5558 | the beginning of the segment, then something is |
5559 | wrong. */ | |
5560 | if (output_section->lma != | |
5561 | (map->p_paddr | |
5562 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5563 | + (map->includes_phdrs | |
5564 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5565 | : 0))) | |
252b5132 RH |
5566 | abort (); |
5567 | } | |
5568 | else | |
5569 | { | |
5570 | asection * prev_sec; | |
252b5132 | 5571 | |
bc67d8a6 | 5572 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5573 | |
5574 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5575 | and the start of this section is more than |
5576 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5577 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5578 | maxpagesize) |
caf47ea6 | 5579 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5580 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5581 | > output_section->lma)) |
252b5132 RH |
5582 | { |
5583 | if (suggested_lma == 0) | |
bc67d8a6 | 5584 | suggested_lma = output_section->lma; |
252b5132 RH |
5585 | |
5586 | continue; | |
5587 | } | |
5588 | } | |
5589 | ||
bc67d8a6 | 5590 | map->sections[map->count++] = output_section; |
252b5132 RH |
5591 | ++isec; |
5592 | sections[j] = NULL; | |
b34976b6 | 5593 | section->segment_mark = TRUE; |
252b5132 RH |
5594 | } |
5595 | else if (suggested_lma == 0) | |
bc67d8a6 | 5596 | suggested_lma = output_section->lma; |
252b5132 RH |
5597 | } |
5598 | ||
bc67d8a6 | 5599 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5600 | |
5601 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5602 | *pointer_to_map = map; |
5603 | pointer_to_map = &map->next; | |
252b5132 | 5604 | |
bc67d8a6 | 5605 | if (isec < section_count) |
252b5132 RH |
5606 | { |
5607 | /* We still have not allocated all of the sections to | |
5608 | segments. Create a new segment here, initialise it | |
5609 | and carry on looping. */ | |
dc810e39 AM |
5610 | amt = sizeof (struct elf_segment_map); |
5611 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5612 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5613 | if (map == NULL) |
5ed6aba4 NC |
5614 | { |
5615 | free (sections); | |
5616 | return FALSE; | |
5617 | } | |
252b5132 RH |
5618 | |
5619 | /* Initialise the fields of the segment map. Set the physical | |
5620 | physical address to the LMA of the first section that has | |
5621 | not yet been assigned. */ | |
bc67d8a6 NC |
5622 | map->next = NULL; |
5623 | map->p_type = segment->p_type; | |
5624 | map->p_flags = segment->p_flags; | |
5625 | map->p_flags_valid = 1; | |
5626 | map->p_paddr = suggested_lma; | |
5627 | map->p_paddr_valid = 1; | |
5628 | map->includes_filehdr = 0; | |
5629 | map->includes_phdrs = 0; | |
252b5132 RH |
5630 | } |
5631 | } | |
bc67d8a6 | 5632 | while (isec < section_count); |
252b5132 RH |
5633 | |
5634 | free (sections); | |
5635 | } | |
5636 | ||
5637 | /* The Solaris linker creates program headers in which all the | |
5638 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5639 | file, we get confused. Check for this case, and if we find it | |
5640 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5641 | for (map = map_first; map != NULL; map = map->next) |
5642 | if (map->p_paddr != 0) | |
252b5132 | 5643 | break; |
bc67d8a6 | 5644 | if (map == NULL) |
b5f852ea NC |
5645 | for (map = map_first; map != NULL; map = map->next) |
5646 | map->p_paddr_valid = 0; | |
252b5132 | 5647 | |
bc67d8a6 NC |
5648 | elf_tdata (obfd)->segment_map = map_first; |
5649 | ||
5650 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5651 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5652 | the offset if necessary. */ |
5653 | if (phdr_adjust_seg != NULL) | |
5654 | { | |
5655 | unsigned int count; | |
c044fabd | 5656 | |
bc67d8a6 | 5657 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5658 | count++; |
252b5132 | 5659 | |
bc67d8a6 NC |
5660 | if (count > phdr_adjust_num) |
5661 | phdr_adjust_seg->p_paddr | |
5662 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5663 | } | |
c044fabd | 5664 | |
bc67d8a6 | 5665 | #undef SEGMENT_END |
eecdbe52 | 5666 | #undef SECTION_SIZE |
bc67d8a6 NC |
5667 | #undef IS_CONTAINED_BY_VMA |
5668 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5669 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5670 | #undef IS_SOLARIS_PT_INTERP |
5671 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5672 | #undef SEGMENT_AFTER_SEGMENT | |
5673 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5674 | return TRUE; |
252b5132 RH |
5675 | } |
5676 | ||
84d1d650 L |
5677 | /* Copy ELF program header information. */ |
5678 | ||
5679 | static bfd_boolean | |
5680 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5681 | { | |
5682 | Elf_Internal_Ehdr *iehdr; | |
5683 | struct elf_segment_map *map; | |
5684 | struct elf_segment_map *map_first; | |
5685 | struct elf_segment_map **pointer_to_map; | |
5686 | Elf_Internal_Phdr *segment; | |
5687 | unsigned int i; | |
5688 | unsigned int num_segments; | |
5689 | bfd_boolean phdr_included = FALSE; | |
5690 | ||
5691 | iehdr = elf_elfheader (ibfd); | |
5692 | ||
5693 | map_first = NULL; | |
5694 | pointer_to_map = &map_first; | |
5695 | ||
5696 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5697 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5698 | i < num_segments; | |
5699 | i++, segment++) | |
5700 | { | |
5701 | asection *section; | |
5702 | unsigned int section_count; | |
5703 | bfd_size_type amt; | |
5704 | Elf_Internal_Shdr *this_hdr; | |
5705 | ||
5706 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5707 | if (segment->p_type == PT_NULL) | |
5708 | continue; | |
5709 | ||
5710 | /* Compute how many sections are in this segment. */ | |
5711 | for (section = ibfd->sections, section_count = 0; | |
5712 | section != NULL; | |
5713 | section = section->next) | |
5714 | { | |
5715 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5716 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5717 | section_count++; | |
5718 | } | |
5719 | ||
5720 | /* Allocate a segment map big enough to contain | |
5721 | all of the sections we have selected. */ | |
5722 | amt = sizeof (struct elf_segment_map); | |
5723 | if (section_count != 0) | |
5724 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
5725 | map = bfd_alloc (obfd, amt); | |
5726 | if (map == NULL) | |
5727 | return FALSE; | |
5728 | ||
5729 | /* Initialize the fields of the output segment map with the | |
5730 | input segment. */ | |
5731 | map->next = NULL; | |
5732 | map->p_type = segment->p_type; | |
5733 | map->p_flags = segment->p_flags; | |
5734 | map->p_flags_valid = 1; | |
5735 | map->p_paddr = segment->p_paddr; | |
5736 | map->p_paddr_valid = 1; | |
5737 | ||
5738 | /* Determine if this segment contains the ELF file header | |
5739 | and if it contains the program headers themselves. */ | |
5740 | map->includes_filehdr = (segment->p_offset == 0 | |
5741 | && segment->p_filesz >= iehdr->e_ehsize); | |
5742 | ||
5743 | map->includes_phdrs = 0; | |
5744 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5745 | { | |
5746 | map->includes_phdrs = | |
5747 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5748 | && (segment->p_offset + segment->p_filesz | |
5749 | >= ((bfd_vma) iehdr->e_phoff | |
5750 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5751 | ||
5752 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5753 | phdr_included = TRUE; | |
5754 | } | |
5755 | ||
5756 | if (section_count != 0) | |
5757 | { | |
5758 | unsigned int isec = 0; | |
5759 | ||
5760 | for (section = ibfd->sections; | |
5761 | section != NULL; | |
5762 | section = section->next) | |
5763 | { | |
5764 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5765 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5766 | map->sections[isec++] = section->output_section; | |
5767 | } | |
5768 | } | |
5769 | ||
5770 | map->count = section_count; | |
5771 | *pointer_to_map = map; | |
5772 | pointer_to_map = &map->next; | |
5773 | } | |
5774 | ||
5775 | elf_tdata (obfd)->segment_map = map_first; | |
5776 | return TRUE; | |
5777 | } | |
5778 | ||
5779 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5780 | information. */ | |
5781 | ||
5782 | static bfd_boolean | |
5783 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5784 | { | |
84d1d650 L |
5785 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5786 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5787 | return TRUE; | |
5788 | ||
5789 | if (elf_tdata (ibfd)->phdr == NULL) | |
5790 | return TRUE; | |
5791 | ||
5792 | if (ibfd->xvec == obfd->xvec) | |
5793 | { | |
5794 | /* Check if any sections in the input BFD covered by ELF program | |
5795 | header are changed. */ | |
d55ce4e2 | 5796 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5797 | asection *section, *osec; |
5798 | unsigned int i, num_segments; | |
5799 | Elf_Internal_Shdr *this_hdr; | |
5800 | ||
5801 | /* Initialize the segment mark field. */ | |
5802 | for (section = obfd->sections; section != NULL; | |
5803 | section = section->next) | |
5804 | section->segment_mark = FALSE; | |
5805 | ||
5806 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5807 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5808 | i < num_segments; | |
5809 | i++, segment++) | |
5810 | { | |
5811 | for (section = ibfd->sections; | |
5812 | section != NULL; section = section->next) | |
5813 | { | |
5814 | /* We mark the output section so that we know it comes | |
5815 | from the input BFD. */ | |
5816 | osec = section->output_section; | |
5817 | if (osec) | |
5818 | osec->segment_mark = TRUE; | |
5819 | ||
5820 | /* Check if this section is covered by the segment. */ | |
5821 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5822 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5823 | { | |
5824 | /* FIXME: Check if its output section is changed or | |
5825 | removed. What else do we need to check? */ | |
5826 | if (osec == NULL | |
5827 | || section->flags != osec->flags | |
5828 | || section->lma != osec->lma | |
5829 | || section->vma != osec->vma | |
5830 | || section->size != osec->size | |
5831 | || section->rawsize != osec->rawsize | |
5832 | || section->alignment_power != osec->alignment_power) | |
5833 | goto rewrite; | |
5834 | } | |
5835 | } | |
5836 | } | |
5837 | ||
5838 | /* Check to see if any output section doesn't come from the | |
5839 | input BFD. */ | |
5840 | for (section = obfd->sections; section != NULL; | |
5841 | section = section->next) | |
5842 | { | |
5843 | if (section->segment_mark == FALSE) | |
5844 | goto rewrite; | |
5845 | else | |
5846 | section->segment_mark = FALSE; | |
5847 | } | |
5848 | ||
5849 | return copy_elf_program_header (ibfd, obfd); | |
5850 | } | |
5851 | ||
5852 | rewrite: | |
5853 | return rewrite_elf_program_header (ibfd, obfd); | |
5854 | } | |
5855 | ||
ccd2ec6a L |
5856 | /* Initialize private output section information from input section. */ |
5857 | ||
5858 | bfd_boolean | |
5859 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5860 | asection *isec, | |
5861 | bfd *obfd, | |
5862 | asection *osec, | |
5863 | struct bfd_link_info *link_info) | |
5864 | ||
5865 | { | |
5866 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5867 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
5868 | ||
5869 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5870 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
5871 | return TRUE; | |
5872 | ||
5873 | /* FIXME: What if the output ELF section type has been set to | |
5874 | something different? */ | |
5875 | if (elf_section_type (osec) == SHT_NULL) | |
5876 | elf_section_type (osec) = elf_section_type (isec); | |
5877 | ||
5878 | /* Set things up for objcopy and relocatable link. The output | |
5879 | SHT_GROUP section will have its elf_next_in_group pointing back | |
5880 | to the input group members. Ignore linker created group section. | |
5881 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
5882 | ||
5883 | if (need_group) | |
5884 | { | |
5885 | if (elf_sec_group (isec) == NULL | |
5886 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5887 | { | |
5888 | if (elf_section_flags (isec) & SHF_GROUP) | |
5889 | elf_section_flags (osec) |= SHF_GROUP; | |
5890 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5891 | elf_group_name (osec) = elf_group_name (isec); | |
5892 | } | |
5893 | } | |
5894 | ||
5895 | ihdr = &elf_section_data (isec)->this_hdr; | |
5896 | ||
5897 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
5898 | don't use the output section of the linked-to section since it | |
5899 | may be NULL at this point. */ | |
5900 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
5901 | { | |
5902 | ohdr = &elf_section_data (osec)->this_hdr; | |
5903 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
5904 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
5905 | } | |
5906 | ||
5907 | osec->use_rela_p = isec->use_rela_p; | |
5908 | ||
5909 | return TRUE; | |
5910 | } | |
5911 | ||
252b5132 RH |
5912 | /* Copy private section information. This copies over the entsize |
5913 | field, and sometimes the info field. */ | |
5914 | ||
b34976b6 | 5915 | bfd_boolean |
217aa764 AM |
5916 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5917 | asection *isec, | |
5918 | bfd *obfd, | |
5919 | asection *osec) | |
252b5132 RH |
5920 | { |
5921 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5922 | ||
5923 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5924 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5925 | return TRUE; |
252b5132 | 5926 | |
252b5132 RH |
5927 | ihdr = &elf_section_data (isec)->this_hdr; |
5928 | ohdr = &elf_section_data (osec)->this_hdr; | |
5929 | ||
5930 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5931 | ||
5932 | if (ihdr->sh_type == SHT_SYMTAB | |
5933 | || ihdr->sh_type == SHT_DYNSYM | |
5934 | || ihdr->sh_type == SHT_GNU_verneed | |
5935 | || ihdr->sh_type == SHT_GNU_verdef) | |
5936 | ohdr->sh_info = ihdr->sh_info; | |
5937 | ||
ccd2ec6a L |
5938 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
5939 | NULL); | |
252b5132 RH |
5940 | } |
5941 | ||
80fccad2 BW |
5942 | /* Copy private header information. */ |
5943 | ||
5944 | bfd_boolean | |
5945 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5946 | { | |
5947 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5948 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5949 | return TRUE; | |
5950 | ||
5951 | /* Copy over private BFD data if it has not already been copied. | |
5952 | This must be done here, rather than in the copy_private_bfd_data | |
5953 | entry point, because the latter is called after the section | |
5954 | contents have been set, which means that the program headers have | |
5955 | already been worked out. */ | |
5956 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5957 | { | |
5958 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5959 | return FALSE; | |
5960 | } | |
5961 | ||
5962 | return TRUE; | |
5963 | } | |
5964 | ||
252b5132 RH |
5965 | /* Copy private symbol information. If this symbol is in a section |
5966 | which we did not map into a BFD section, try to map the section | |
5967 | index correctly. We use special macro definitions for the mapped | |
5968 | section indices; these definitions are interpreted by the | |
5969 | swap_out_syms function. */ | |
5970 | ||
9ad5cbcf AM |
5971 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5972 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5973 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5974 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5975 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5976 | |
b34976b6 | 5977 | bfd_boolean |
217aa764 AM |
5978 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5979 | asymbol *isymarg, | |
5980 | bfd *obfd, | |
5981 | asymbol *osymarg) | |
252b5132 RH |
5982 | { |
5983 | elf_symbol_type *isym, *osym; | |
5984 | ||
5985 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5986 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5987 | return TRUE; |
252b5132 RH |
5988 | |
5989 | isym = elf_symbol_from (ibfd, isymarg); | |
5990 | osym = elf_symbol_from (obfd, osymarg); | |
5991 | ||
5992 | if (isym != NULL | |
5993 | && osym != NULL | |
5994 | && bfd_is_abs_section (isym->symbol.section)) | |
5995 | { | |
5996 | unsigned int shndx; | |
5997 | ||
5998 | shndx = isym->internal_elf_sym.st_shndx; | |
5999 | if (shndx == elf_onesymtab (ibfd)) | |
6000 | shndx = MAP_ONESYMTAB; | |
6001 | else if (shndx == elf_dynsymtab (ibfd)) | |
6002 | shndx = MAP_DYNSYMTAB; | |
6003 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6004 | shndx = MAP_STRTAB; | |
6005 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6006 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6007 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6008 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6009 | osym->internal_elf_sym.st_shndx = shndx; |
6010 | } | |
6011 | ||
b34976b6 | 6012 | return TRUE; |
252b5132 RH |
6013 | } |
6014 | ||
6015 | /* Swap out the symbols. */ | |
6016 | ||
b34976b6 | 6017 | static bfd_boolean |
217aa764 AM |
6018 | swap_out_syms (bfd *abfd, |
6019 | struct bfd_strtab_hash **sttp, | |
6020 | int relocatable_p) | |
252b5132 | 6021 | { |
9c5bfbb7 | 6022 | const struct elf_backend_data *bed; |
079e9a2f AM |
6023 | int symcount; |
6024 | asymbol **syms; | |
6025 | struct bfd_strtab_hash *stt; | |
6026 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6027 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6028 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6029 | bfd_byte *outbound_syms; |
6030 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6031 | int idx; |
6032 | bfd_size_type amt; | |
174fd7f9 | 6033 | bfd_boolean name_local_sections; |
252b5132 RH |
6034 | |
6035 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6036 | return FALSE; |
252b5132 | 6037 | |
c044fabd | 6038 | /* Dump out the symtabs. */ |
079e9a2f AM |
6039 | stt = _bfd_elf_stringtab_init (); |
6040 | if (stt == NULL) | |
b34976b6 | 6041 | return FALSE; |
252b5132 | 6042 | |
079e9a2f AM |
6043 | bed = get_elf_backend_data (abfd); |
6044 | symcount = bfd_get_symcount (abfd); | |
6045 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6046 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6047 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6048 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6049 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6050 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6051 | |
6052 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6053 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6054 | ||
d0fb9a8d | 6055 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6056 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6057 | { |
6058 | _bfd_stringtab_free (stt); | |
6059 | return FALSE; | |
6060 | } | |
217aa764 | 6061 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6062 | |
9ad5cbcf AM |
6063 | outbound_shndx = NULL; |
6064 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6065 | if (symtab_shndx_hdr->sh_name != 0) | |
6066 | { | |
6067 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6068 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6069 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6070 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6071 | { |
6072 | _bfd_stringtab_free (stt); | |
6073 | return FALSE; | |
6074 | } | |
6075 | ||
9ad5cbcf AM |
6076 | symtab_shndx_hdr->contents = outbound_shndx; |
6077 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6078 | symtab_shndx_hdr->sh_size = amt; | |
6079 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6080 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6081 | } | |
6082 | ||
589e6347 | 6083 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6084 | { |
6085 | /* Fill in zeroth symbol and swap it out. */ | |
6086 | Elf_Internal_Sym sym; | |
6087 | sym.st_name = 0; | |
6088 | sym.st_value = 0; | |
6089 | sym.st_size = 0; | |
6090 | sym.st_info = 0; | |
6091 | sym.st_other = 0; | |
6092 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6093 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6094 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6095 | if (outbound_shndx != NULL) |
6096 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6097 | } |
252b5132 | 6098 | |
174fd7f9 RS |
6099 | name_local_sections |
6100 | = (bed->elf_backend_name_local_section_symbols | |
6101 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6102 | ||
079e9a2f AM |
6103 | syms = bfd_get_outsymbols (abfd); |
6104 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6105 | { |
252b5132 | 6106 | Elf_Internal_Sym sym; |
079e9a2f AM |
6107 | bfd_vma value = syms[idx]->value; |
6108 | elf_symbol_type *type_ptr; | |
6109 | flagword flags = syms[idx]->flags; | |
6110 | int type; | |
252b5132 | 6111 | |
174fd7f9 RS |
6112 | if (!name_local_sections |
6113 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6114 | { |
6115 | /* Local section symbols have no name. */ | |
6116 | sym.st_name = 0; | |
6117 | } | |
6118 | else | |
6119 | { | |
6120 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6121 | syms[idx]->name, | |
b34976b6 | 6122 | TRUE, FALSE); |
079e9a2f | 6123 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6124 | { |
6125 | _bfd_stringtab_free (stt); | |
6126 | return FALSE; | |
6127 | } | |
079e9a2f | 6128 | } |
252b5132 | 6129 | |
079e9a2f | 6130 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6131 | |
079e9a2f AM |
6132 | if ((flags & BSF_SECTION_SYM) == 0 |
6133 | && bfd_is_com_section (syms[idx]->section)) | |
6134 | { | |
6135 | /* ELF common symbols put the alignment into the `value' field, | |
6136 | and the size into the `size' field. This is backwards from | |
6137 | how BFD handles it, so reverse it here. */ | |
6138 | sym.st_size = value; | |
6139 | if (type_ptr == NULL | |
6140 | || type_ptr->internal_elf_sym.st_value == 0) | |
6141 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6142 | else | |
6143 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6144 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6145 | (abfd, syms[idx]->section); | |
6146 | } | |
6147 | else | |
6148 | { | |
6149 | asection *sec = syms[idx]->section; | |
6150 | int shndx; | |
252b5132 | 6151 | |
079e9a2f AM |
6152 | if (sec->output_section) |
6153 | { | |
6154 | value += sec->output_offset; | |
6155 | sec = sec->output_section; | |
6156 | } | |
589e6347 | 6157 | |
079e9a2f AM |
6158 | /* Don't add in the section vma for relocatable output. */ |
6159 | if (! relocatable_p) | |
6160 | value += sec->vma; | |
6161 | sym.st_value = value; | |
6162 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6163 | ||
6164 | if (bfd_is_abs_section (sec) | |
6165 | && type_ptr != NULL | |
6166 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6167 | { | |
6168 | /* This symbol is in a real ELF section which we did | |
6169 | not create as a BFD section. Undo the mapping done | |
6170 | by copy_private_symbol_data. */ | |
6171 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6172 | switch (shndx) | |
6173 | { | |
6174 | case MAP_ONESYMTAB: | |
6175 | shndx = elf_onesymtab (abfd); | |
6176 | break; | |
6177 | case MAP_DYNSYMTAB: | |
6178 | shndx = elf_dynsymtab (abfd); | |
6179 | break; | |
6180 | case MAP_STRTAB: | |
6181 | shndx = elf_tdata (abfd)->strtab_section; | |
6182 | break; | |
6183 | case MAP_SHSTRTAB: | |
6184 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6185 | break; | |
9ad5cbcf AM |
6186 | case MAP_SYM_SHNDX: |
6187 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6188 | break; | |
079e9a2f AM |
6189 | default: |
6190 | break; | |
6191 | } | |
6192 | } | |
6193 | else | |
6194 | { | |
6195 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6196 | |
079e9a2f AM |
6197 | if (shndx == -1) |
6198 | { | |
6199 | asection *sec2; | |
6200 | ||
6201 | /* Writing this would be a hell of a lot easier if | |
6202 | we had some decent documentation on bfd, and | |
6203 | knew what to expect of the library, and what to | |
6204 | demand of applications. For example, it | |
6205 | appears that `objcopy' might not set the | |
6206 | section of a symbol to be a section that is | |
6207 | actually in the output file. */ | |
6208 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6209 | if (sec2 == NULL) |
6210 | { | |
6211 | _bfd_error_handler (_("\ | |
6212 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6213 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6214 | sec->name); | |
811072d8 | 6215 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6216 | _bfd_stringtab_free (stt); |
589e6347 NC |
6217 | return FALSE; |
6218 | } | |
811072d8 | 6219 | |
079e9a2f AM |
6220 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6221 | BFD_ASSERT (shndx != -1); | |
6222 | } | |
6223 | } | |
252b5132 | 6224 | |
079e9a2f AM |
6225 | sym.st_shndx = shndx; |
6226 | } | |
252b5132 | 6227 | |
13ae64f3 JJ |
6228 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6229 | type = STT_TLS; | |
6230 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6231 | type = STT_FUNC; |
6232 | else if ((flags & BSF_OBJECT) != 0) | |
6233 | type = STT_OBJECT; | |
6234 | else | |
6235 | type = STT_NOTYPE; | |
252b5132 | 6236 | |
13ae64f3 JJ |
6237 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6238 | type = STT_TLS; | |
6239 | ||
589e6347 | 6240 | /* Processor-specific types. */ |
079e9a2f AM |
6241 | if (type_ptr != NULL |
6242 | && bed->elf_backend_get_symbol_type) | |
6243 | type = ((*bed->elf_backend_get_symbol_type) | |
6244 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6245 | |
079e9a2f AM |
6246 | if (flags & BSF_SECTION_SYM) |
6247 | { | |
6248 | if (flags & BSF_GLOBAL) | |
6249 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6250 | else | |
6251 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6252 | } | |
6253 | else if (bfd_is_com_section (syms[idx]->section)) | |
6254 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6255 | else if (bfd_is_und_section (syms[idx]->section)) | |
6256 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6257 | ? STB_WEAK | |
6258 | : STB_GLOBAL), | |
6259 | type); | |
6260 | else if (flags & BSF_FILE) | |
6261 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6262 | else | |
6263 | { | |
6264 | int bind = STB_LOCAL; | |
252b5132 | 6265 | |
079e9a2f AM |
6266 | if (flags & BSF_LOCAL) |
6267 | bind = STB_LOCAL; | |
6268 | else if (flags & BSF_WEAK) | |
6269 | bind = STB_WEAK; | |
6270 | else if (flags & BSF_GLOBAL) | |
6271 | bind = STB_GLOBAL; | |
252b5132 | 6272 | |
079e9a2f AM |
6273 | sym.st_info = ELF_ST_INFO (bind, type); |
6274 | } | |
252b5132 | 6275 | |
079e9a2f AM |
6276 | if (type_ptr != NULL) |
6277 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6278 | else | |
6279 | sym.st_other = 0; | |
252b5132 | 6280 | |
9ad5cbcf | 6281 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6282 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6283 | if (outbound_shndx != NULL) |
6284 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6285 | } |
252b5132 | 6286 | |
079e9a2f AM |
6287 | *sttp = stt; |
6288 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6289 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6290 | |
079e9a2f AM |
6291 | symstrtab_hdr->sh_flags = 0; |
6292 | symstrtab_hdr->sh_addr = 0; | |
6293 | symstrtab_hdr->sh_entsize = 0; | |
6294 | symstrtab_hdr->sh_link = 0; | |
6295 | symstrtab_hdr->sh_info = 0; | |
6296 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6297 | |
b34976b6 | 6298 | return TRUE; |
252b5132 RH |
6299 | } |
6300 | ||
6301 | /* Return the number of bytes required to hold the symtab vector. | |
6302 | ||
6303 | Note that we base it on the count plus 1, since we will null terminate | |
6304 | the vector allocated based on this size. However, the ELF symbol table | |
6305 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6306 | ||
6307 | long | |
217aa764 | 6308 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6309 | { |
6310 | long symcount; | |
6311 | long symtab_size; | |
6312 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6313 | ||
6314 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6315 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6316 | if (symcount > 0) | |
6317 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6318 | |
6319 | return symtab_size; | |
6320 | } | |
6321 | ||
6322 | long | |
217aa764 | 6323 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6324 | { |
6325 | long symcount; | |
6326 | long symtab_size; | |
6327 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6328 | ||
6329 | if (elf_dynsymtab (abfd) == 0) | |
6330 | { | |
6331 | bfd_set_error (bfd_error_invalid_operation); | |
6332 | return -1; | |
6333 | } | |
6334 | ||
6335 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6336 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6337 | if (symcount > 0) | |
6338 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6339 | |
6340 | return symtab_size; | |
6341 | } | |
6342 | ||
6343 | long | |
217aa764 AM |
6344 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6345 | sec_ptr asect) | |
252b5132 RH |
6346 | { |
6347 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6348 | } | |
6349 | ||
6350 | /* Canonicalize the relocs. */ | |
6351 | ||
6352 | long | |
217aa764 AM |
6353 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6354 | sec_ptr section, | |
6355 | arelent **relptr, | |
6356 | asymbol **symbols) | |
252b5132 RH |
6357 | { |
6358 | arelent *tblptr; | |
6359 | unsigned int i; | |
9c5bfbb7 | 6360 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6361 | |
b34976b6 | 6362 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6363 | return -1; |
6364 | ||
6365 | tblptr = section->relocation; | |
6366 | for (i = 0; i < section->reloc_count; i++) | |
6367 | *relptr++ = tblptr++; | |
6368 | ||
6369 | *relptr = NULL; | |
6370 | ||
6371 | return section->reloc_count; | |
6372 | } | |
6373 | ||
6374 | long | |
6cee3f79 | 6375 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6376 | { |
9c5bfbb7 | 6377 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6378 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6379 | |
6380 | if (symcount >= 0) | |
6381 | bfd_get_symcount (abfd) = symcount; | |
6382 | return symcount; | |
6383 | } | |
6384 | ||
6385 | long | |
217aa764 AM |
6386 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6387 | asymbol **allocation) | |
252b5132 | 6388 | { |
9c5bfbb7 | 6389 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6390 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6391 | |
6392 | if (symcount >= 0) | |
6393 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6394 | return symcount; | |
252b5132 RH |
6395 | } |
6396 | ||
8615f3f2 AM |
6397 | /* Return the size required for the dynamic reloc entries. Any loadable |
6398 | section that was actually installed in the BFD, and has type SHT_REL | |
6399 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6400 | dynamic reloc section. */ | |
252b5132 RH |
6401 | |
6402 | long | |
217aa764 | 6403 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6404 | { |
6405 | long ret; | |
6406 | asection *s; | |
6407 | ||
6408 | if (elf_dynsymtab (abfd) == 0) | |
6409 | { | |
6410 | bfd_set_error (bfd_error_invalid_operation); | |
6411 | return -1; | |
6412 | } | |
6413 | ||
6414 | ret = sizeof (arelent *); | |
6415 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6416 | if ((s->flags & SEC_LOAD) != 0 |
6417 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6418 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6419 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6420 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6421 | * sizeof (arelent *)); |
6422 | ||
6423 | return ret; | |
6424 | } | |
6425 | ||
8615f3f2 AM |
6426 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6427 | dynamic relocations as a single block, although they are actually | |
6428 | associated with particular sections; the interface, which was | |
6429 | designed for SunOS style shared libraries, expects that there is only | |
6430 | one set of dynamic relocs. Any loadable section that was actually | |
6431 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6432 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6433 | |
6434 | long | |
217aa764 AM |
6435 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6436 | arelent **storage, | |
6437 | asymbol **syms) | |
252b5132 | 6438 | { |
217aa764 | 6439 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6440 | asection *s; |
6441 | long ret; | |
6442 | ||
6443 | if (elf_dynsymtab (abfd) == 0) | |
6444 | { | |
6445 | bfd_set_error (bfd_error_invalid_operation); | |
6446 | return -1; | |
6447 | } | |
6448 | ||
6449 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6450 | ret = 0; | |
6451 | for (s = abfd->sections; s != NULL; s = s->next) | |
6452 | { | |
8615f3f2 AM |
6453 | if ((s->flags & SEC_LOAD) != 0 |
6454 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6455 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6456 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6457 | { | |
6458 | arelent *p; | |
6459 | long count, i; | |
6460 | ||
b34976b6 | 6461 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6462 | return -1; |
eea6121a | 6463 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6464 | p = s->relocation; |
6465 | for (i = 0; i < count; i++) | |
6466 | *storage++ = p++; | |
6467 | ret += count; | |
6468 | } | |
6469 | } | |
6470 | ||
6471 | *storage = NULL; | |
6472 | ||
6473 | return ret; | |
6474 | } | |
6475 | \f | |
6476 | /* Read in the version information. */ | |
6477 | ||
b34976b6 | 6478 | bfd_boolean |
fc0e6df6 | 6479 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6480 | { |
6481 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6482 | unsigned int freeidx = 0; |
6483 | ||
6484 | if (elf_dynverref (abfd) != 0) | |
6485 | { | |
6486 | Elf_Internal_Shdr *hdr; | |
6487 | Elf_External_Verneed *everneed; | |
6488 | Elf_Internal_Verneed *iverneed; | |
6489 | unsigned int i; | |
d0fb9a8d | 6490 | bfd_byte *contents_end; |
fc0e6df6 PB |
6491 | |
6492 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6493 | ||
d0fb9a8d JJ |
6494 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6495 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6496 | if (elf_tdata (abfd)->verref == NULL) |
6497 | goto error_return; | |
6498 | ||
6499 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6500 | ||
6501 | contents = bfd_malloc (hdr->sh_size); | |
6502 | if (contents == NULL) | |
d0fb9a8d JJ |
6503 | { |
6504 | error_return_verref: | |
6505 | elf_tdata (abfd)->verref = NULL; | |
6506 | elf_tdata (abfd)->cverrefs = 0; | |
6507 | goto error_return; | |
6508 | } | |
fc0e6df6 PB |
6509 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6510 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6511 | goto error_return_verref; |
fc0e6df6 | 6512 | |
d0fb9a8d JJ |
6513 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6514 | goto error_return_verref; | |
6515 | ||
6516 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6517 | == sizeof (Elf_External_Vernaux)); | |
6518 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6519 | everneed = (Elf_External_Verneed *) contents; |
6520 | iverneed = elf_tdata (abfd)->verref; | |
6521 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6522 | { | |
6523 | Elf_External_Vernaux *evernaux; | |
6524 | Elf_Internal_Vernaux *ivernaux; | |
6525 | unsigned int j; | |
6526 | ||
6527 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6528 | ||
6529 | iverneed->vn_bfd = abfd; | |
6530 | ||
6531 | iverneed->vn_filename = | |
6532 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6533 | iverneed->vn_file); | |
6534 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6535 | goto error_return_verref; |
fc0e6df6 | 6536 | |
d0fb9a8d JJ |
6537 | if (iverneed->vn_cnt == 0) |
6538 | iverneed->vn_auxptr = NULL; | |
6539 | else | |
6540 | { | |
6541 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6542 | sizeof (Elf_Internal_Vernaux)); | |
6543 | if (iverneed->vn_auxptr == NULL) | |
6544 | goto error_return_verref; | |
6545 | } | |
6546 | ||
6547 | if (iverneed->vn_aux | |
6548 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6549 | goto error_return_verref; | |
fc0e6df6 PB |
6550 | |
6551 | evernaux = ((Elf_External_Vernaux *) | |
6552 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6553 | ivernaux = iverneed->vn_auxptr; | |
6554 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6555 | { | |
6556 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6557 | ||
6558 | ivernaux->vna_nodename = | |
6559 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6560 | ivernaux->vna_name); | |
6561 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6562 | goto error_return_verref; |
fc0e6df6 PB |
6563 | |
6564 | if (j + 1 < iverneed->vn_cnt) | |
6565 | ivernaux->vna_nextptr = ivernaux + 1; | |
6566 | else | |
6567 | ivernaux->vna_nextptr = NULL; | |
6568 | ||
d0fb9a8d JJ |
6569 | if (ivernaux->vna_next |
6570 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6571 | goto error_return_verref; | |
6572 | ||
fc0e6df6 PB |
6573 | evernaux = ((Elf_External_Vernaux *) |
6574 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6575 | ||
6576 | if (ivernaux->vna_other > freeidx) | |
6577 | freeidx = ivernaux->vna_other; | |
6578 | } | |
6579 | ||
6580 | if (i + 1 < hdr->sh_info) | |
6581 | iverneed->vn_nextref = iverneed + 1; | |
6582 | else | |
6583 | iverneed->vn_nextref = NULL; | |
6584 | ||
d0fb9a8d JJ |
6585 | if (iverneed->vn_next |
6586 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6587 | goto error_return_verref; | |
6588 | ||
fc0e6df6 PB |
6589 | everneed = ((Elf_External_Verneed *) |
6590 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6591 | } | |
6592 | ||
6593 | free (contents); | |
6594 | contents = NULL; | |
6595 | } | |
252b5132 RH |
6596 | |
6597 | if (elf_dynverdef (abfd) != 0) | |
6598 | { | |
6599 | Elf_Internal_Shdr *hdr; | |
6600 | Elf_External_Verdef *everdef; | |
6601 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6602 | Elf_Internal_Verdef *iverdefarr; |
6603 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6604 | unsigned int i; |
062e2358 | 6605 | unsigned int maxidx; |
d0fb9a8d | 6606 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6607 | |
6608 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6609 | ||
217aa764 | 6610 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6611 | if (contents == NULL) |
6612 | goto error_return; | |
6613 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6614 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6615 | goto error_return; |
6616 | ||
d0fb9a8d JJ |
6617 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6618 | goto error_return; | |
6619 | ||
6620 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6621 | >= sizeof (Elf_External_Verdaux)); | |
6622 | contents_end_def = contents + hdr->sh_size | |
6623 | - sizeof (Elf_External_Verdef); | |
6624 | contents_end_aux = contents + hdr->sh_size | |
6625 | - sizeof (Elf_External_Verdaux); | |
6626 | ||
f631889e UD |
6627 | /* We know the number of entries in the section but not the maximum |
6628 | index. Therefore we have to run through all entries and find | |
6629 | the maximum. */ | |
252b5132 | 6630 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6631 | maxidx = 0; |
6632 | for (i = 0; i < hdr->sh_info; ++i) | |
6633 | { | |
6634 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6635 | ||
062e2358 AM |
6636 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6637 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6638 | |
d0fb9a8d JJ |
6639 | if (iverdefmem.vd_next |
6640 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6641 | goto error_return; | |
6642 | ||
f631889e UD |
6643 | everdef = ((Elf_External_Verdef *) |
6644 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6645 | } | |
6646 | ||
fc0e6df6 PB |
6647 | if (default_imported_symver) |
6648 | { | |
6649 | if (freeidx > maxidx) | |
6650 | maxidx = ++freeidx; | |
6651 | else | |
6652 | freeidx = ++maxidx; | |
6653 | } | |
d0fb9a8d JJ |
6654 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6655 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6656 | if (elf_tdata (abfd)->verdef == NULL) |
6657 | goto error_return; | |
6658 | ||
6659 | elf_tdata (abfd)->cverdefs = maxidx; | |
6660 | ||
6661 | everdef = (Elf_External_Verdef *) contents; | |
6662 | iverdefarr = elf_tdata (abfd)->verdef; | |
6663 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6664 | { |
6665 | Elf_External_Verdaux *everdaux; | |
6666 | Elf_Internal_Verdaux *iverdaux; | |
6667 | unsigned int j; | |
6668 | ||
f631889e UD |
6669 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6670 | ||
d0fb9a8d JJ |
6671 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6672 | { | |
6673 | error_return_verdef: | |
6674 | elf_tdata (abfd)->verdef = NULL; | |
6675 | elf_tdata (abfd)->cverdefs = 0; | |
6676 | goto error_return; | |
6677 | } | |
6678 | ||
f631889e UD |
6679 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6680 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6681 | |
6682 | iverdef->vd_bfd = abfd; | |
6683 | ||
d0fb9a8d JJ |
6684 | if (iverdef->vd_cnt == 0) |
6685 | iverdef->vd_auxptr = NULL; | |
6686 | else | |
6687 | { | |
6688 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6689 | sizeof (Elf_Internal_Verdaux)); | |
6690 | if (iverdef->vd_auxptr == NULL) | |
6691 | goto error_return_verdef; | |
6692 | } | |
6693 | ||
6694 | if (iverdef->vd_aux | |
6695 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6696 | goto error_return_verdef; | |
252b5132 RH |
6697 | |
6698 | everdaux = ((Elf_External_Verdaux *) | |
6699 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6700 | iverdaux = iverdef->vd_auxptr; | |
6701 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6702 | { | |
6703 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6704 | ||
6705 | iverdaux->vda_nodename = | |
6706 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6707 | iverdaux->vda_name); | |
6708 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6709 | goto error_return_verdef; |
252b5132 RH |
6710 | |
6711 | if (j + 1 < iverdef->vd_cnt) | |
6712 | iverdaux->vda_nextptr = iverdaux + 1; | |
6713 | else | |
6714 | iverdaux->vda_nextptr = NULL; | |
6715 | ||
d0fb9a8d JJ |
6716 | if (iverdaux->vda_next |
6717 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6718 | goto error_return_verdef; | |
6719 | ||
252b5132 RH |
6720 | everdaux = ((Elf_External_Verdaux *) |
6721 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6722 | } | |
6723 | ||
d0fb9a8d JJ |
6724 | if (iverdef->vd_cnt) |
6725 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6726 | |
d0fb9a8d | 6727 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6728 | iverdef->vd_nextdef = iverdef + 1; |
6729 | else | |
6730 | iverdef->vd_nextdef = NULL; | |
6731 | ||
6732 | everdef = ((Elf_External_Verdef *) | |
6733 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6734 | } | |
6735 | ||
6736 | free (contents); | |
6737 | contents = NULL; | |
6738 | } | |
fc0e6df6 | 6739 | else if (default_imported_symver) |
252b5132 | 6740 | { |
fc0e6df6 PB |
6741 | if (freeidx < 3) |
6742 | freeidx = 3; | |
6743 | else | |
6744 | freeidx++; | |
252b5132 | 6745 | |
d0fb9a8d JJ |
6746 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6747 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6748 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6749 | goto error_return; |
6750 | ||
fc0e6df6 PB |
6751 | elf_tdata (abfd)->cverdefs = freeidx; |
6752 | } | |
252b5132 | 6753 | |
fc0e6df6 PB |
6754 | /* Create a default version based on the soname. */ |
6755 | if (default_imported_symver) | |
6756 | { | |
6757 | Elf_Internal_Verdef *iverdef; | |
6758 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6759 | |
fc0e6df6 | 6760 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6761 | |
fc0e6df6 PB |
6762 | iverdef->vd_version = VER_DEF_CURRENT; |
6763 | iverdef->vd_flags = 0; | |
6764 | iverdef->vd_ndx = freeidx; | |
6765 | iverdef->vd_cnt = 1; | |
252b5132 | 6766 | |
fc0e6df6 | 6767 | iverdef->vd_bfd = abfd; |
252b5132 | 6768 | |
fc0e6df6 PB |
6769 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6770 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6771 | goto error_return_verdef; |
fc0e6df6 | 6772 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6773 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6774 | if (iverdef->vd_auxptr == NULL) | |
6775 | goto error_return_verdef; | |
252b5132 | 6776 | |
fc0e6df6 PB |
6777 | iverdaux = iverdef->vd_auxptr; |
6778 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6779 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6780 | } |
6781 | ||
b34976b6 | 6782 | return TRUE; |
252b5132 RH |
6783 | |
6784 | error_return: | |
5ed6aba4 | 6785 | if (contents != NULL) |
252b5132 | 6786 | free (contents); |
b34976b6 | 6787 | return FALSE; |
252b5132 RH |
6788 | } |
6789 | \f | |
6790 | asymbol * | |
217aa764 | 6791 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6792 | { |
6793 | elf_symbol_type *newsym; | |
dc810e39 | 6794 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6795 | |
217aa764 | 6796 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6797 | if (!newsym) |
6798 | return NULL; | |
6799 | else | |
6800 | { | |
6801 | newsym->symbol.the_bfd = abfd; | |
6802 | return &newsym->symbol; | |
6803 | } | |
6804 | } | |
6805 | ||
6806 | void | |
217aa764 AM |
6807 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6808 | asymbol *symbol, | |
6809 | symbol_info *ret) | |
252b5132 RH |
6810 | { |
6811 | bfd_symbol_info (symbol, ret); | |
6812 | } | |
6813 | ||
6814 | /* Return whether a symbol name implies a local symbol. Most targets | |
6815 | use this function for the is_local_label_name entry point, but some | |
6816 | override it. */ | |
6817 | ||
b34976b6 | 6818 | bfd_boolean |
217aa764 AM |
6819 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6820 | const char *name) | |
252b5132 RH |
6821 | { |
6822 | /* Normal local symbols start with ``.L''. */ | |
6823 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6824 | return TRUE; |
252b5132 RH |
6825 | |
6826 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6827 | DWARF debugging symbols starting with ``..''. */ | |
6828 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6829 | return TRUE; |
252b5132 RH |
6830 | |
6831 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6832 | emitting DWARF debugging output. I suspect this is actually a | |
6833 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6834 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6835 | underscore to be emitted on some ELF targets). For ease of use, | |
6836 | we treat such symbols as local. */ | |
6837 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6838 | return TRUE; |
252b5132 | 6839 | |
b34976b6 | 6840 | return FALSE; |
252b5132 RH |
6841 | } |
6842 | ||
6843 | alent * | |
217aa764 AM |
6844 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6845 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6846 | { |
6847 | abort (); | |
6848 | return NULL; | |
6849 | } | |
6850 | ||
b34976b6 | 6851 | bfd_boolean |
217aa764 AM |
6852 | _bfd_elf_set_arch_mach (bfd *abfd, |
6853 | enum bfd_architecture arch, | |
6854 | unsigned long machine) | |
252b5132 RH |
6855 | { |
6856 | /* If this isn't the right architecture for this backend, and this | |
6857 | isn't the generic backend, fail. */ | |
6858 | if (arch != get_elf_backend_data (abfd)->arch | |
6859 | && arch != bfd_arch_unknown | |
6860 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6861 | return FALSE; |
252b5132 RH |
6862 | |
6863 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6864 | } | |
6865 | ||
d1fad7c6 NC |
6866 | /* Find the function to a particular section and offset, |
6867 | for error reporting. */ | |
252b5132 | 6868 | |
b34976b6 | 6869 | static bfd_boolean |
217aa764 AM |
6870 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6871 | asection *section, | |
6872 | asymbol **symbols, | |
6873 | bfd_vma offset, | |
6874 | const char **filename_ptr, | |
6875 | const char **functionname_ptr) | |
252b5132 | 6876 | { |
252b5132 | 6877 | const char *filename; |
57426232 | 6878 | asymbol *func, *file; |
252b5132 RH |
6879 | bfd_vma low_func; |
6880 | asymbol **p; | |
57426232 JB |
6881 | /* ??? Given multiple file symbols, it is impossible to reliably |
6882 | choose the right file name for global symbols. File symbols are | |
6883 | local symbols, and thus all file symbols must sort before any | |
6884 | global symbols. The ELF spec may be interpreted to say that a | |
6885 | file symbol must sort before other local symbols, but currently | |
6886 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6887 | make a better choice of file name for local symbols by ignoring | |
6888 | file symbols appearing after a given local symbol. */ | |
6889 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6890 | |
252b5132 RH |
6891 | filename = NULL; |
6892 | func = NULL; | |
57426232 | 6893 | file = NULL; |
252b5132 | 6894 | low_func = 0; |
57426232 | 6895 | state = nothing_seen; |
252b5132 RH |
6896 | |
6897 | for (p = symbols; *p != NULL; p++) | |
6898 | { | |
6899 | elf_symbol_type *q; | |
6900 | ||
6901 | q = (elf_symbol_type *) *p; | |
6902 | ||
252b5132 RH |
6903 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6904 | { | |
6905 | default: | |
6906 | break; | |
6907 | case STT_FILE: | |
57426232 JB |
6908 | file = &q->symbol; |
6909 | if (state == symbol_seen) | |
6910 | state = file_after_symbol_seen; | |
6911 | continue; | |
252b5132 RH |
6912 | case STT_NOTYPE: |
6913 | case STT_FUNC: | |
6b40fcba | 6914 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6915 | && q->symbol.value >= low_func |
6916 | && q->symbol.value <= offset) | |
6917 | { | |
6918 | func = (asymbol *) q; | |
6919 | low_func = q->symbol.value; | |
a1923858 AM |
6920 | filename = NULL; |
6921 | if (file != NULL | |
6922 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
6923 | || state != file_after_symbol_seen)) | |
57426232 | 6924 | filename = bfd_asymbol_name (file); |
252b5132 RH |
6925 | } |
6926 | break; | |
6927 | } | |
57426232 JB |
6928 | if (state == nothing_seen) |
6929 | state = symbol_seen; | |
252b5132 RH |
6930 | } |
6931 | ||
6932 | if (func == NULL) | |
b34976b6 | 6933 | return FALSE; |
252b5132 | 6934 | |
d1fad7c6 NC |
6935 | if (filename_ptr) |
6936 | *filename_ptr = filename; | |
6937 | if (functionname_ptr) | |
6938 | *functionname_ptr = bfd_asymbol_name (func); | |
6939 | ||
b34976b6 | 6940 | return TRUE; |
d1fad7c6 NC |
6941 | } |
6942 | ||
6943 | /* Find the nearest line to a particular section and offset, | |
6944 | for error reporting. */ | |
6945 | ||
b34976b6 | 6946 | bfd_boolean |
217aa764 AM |
6947 | _bfd_elf_find_nearest_line (bfd *abfd, |
6948 | asection *section, | |
6949 | asymbol **symbols, | |
6950 | bfd_vma offset, | |
6951 | const char **filename_ptr, | |
6952 | const char **functionname_ptr, | |
6953 | unsigned int *line_ptr) | |
d1fad7c6 | 6954 | { |
b34976b6 | 6955 | bfd_boolean found; |
d1fad7c6 NC |
6956 | |
6957 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6958 | filename_ptr, functionname_ptr, |
6959 | line_ptr)) | |
d1fad7c6 NC |
6960 | { |
6961 | if (!*functionname_ptr) | |
4e8a9624 AM |
6962 | elf_find_function (abfd, section, symbols, offset, |
6963 | *filename_ptr ? NULL : filename_ptr, | |
6964 | functionname_ptr); | |
6965 | ||
b34976b6 | 6966 | return TRUE; |
d1fad7c6 NC |
6967 | } |
6968 | ||
6969 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6970 | filename_ptr, functionname_ptr, |
6971 | line_ptr, 0, | |
6972 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6973 | { |
6974 | if (!*functionname_ptr) | |
4e8a9624 AM |
6975 | elf_find_function (abfd, section, symbols, offset, |
6976 | *filename_ptr ? NULL : filename_ptr, | |
6977 | functionname_ptr); | |
6978 | ||
b34976b6 | 6979 | return TRUE; |
d1fad7c6 NC |
6980 | } |
6981 | ||
6982 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6983 | &found, filename_ptr, |
6984 | functionname_ptr, line_ptr, | |
6985 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6986 | return FALSE; |
dc43ada5 | 6987 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6988 | return TRUE; |
d1fad7c6 NC |
6989 | |
6990 | if (symbols == NULL) | |
b34976b6 | 6991 | return FALSE; |
d1fad7c6 NC |
6992 | |
6993 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6994 | filename_ptr, functionname_ptr)) |
b34976b6 | 6995 | return FALSE; |
d1fad7c6 | 6996 | |
252b5132 | 6997 | *line_ptr = 0; |
b34976b6 | 6998 | return TRUE; |
252b5132 RH |
6999 | } |
7000 | ||
5420f73d L |
7001 | /* Find the line for a symbol. */ |
7002 | ||
7003 | bfd_boolean | |
7004 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7005 | const char **filename_ptr, unsigned int *line_ptr) | |
7006 | { | |
7007 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7008 | filename_ptr, line_ptr, 0, | |
7009 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7010 | } | |
7011 | ||
4ab527b0 FF |
7012 | /* After a call to bfd_find_nearest_line, successive calls to |
7013 | bfd_find_inliner_info can be used to get source information about | |
7014 | each level of function inlining that terminated at the address | |
7015 | passed to bfd_find_nearest_line. Currently this is only supported | |
7016 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7017 | ||
7018 | bfd_boolean | |
7019 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7020 | const char **filename_ptr, | |
7021 | const char **functionname_ptr, | |
7022 | unsigned int *line_ptr) | |
7023 | { | |
7024 | bfd_boolean found; | |
7025 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7026 | functionname_ptr, line_ptr, | |
7027 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7028 | return found; | |
7029 | } | |
7030 | ||
252b5132 | 7031 | int |
217aa764 | 7032 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
7033 | { |
7034 | int ret; | |
7035 | ||
7036 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
7037 | if (! reloc) | |
7038 | ret += get_program_header_size (abfd); | |
7039 | return ret; | |
7040 | } | |
7041 | ||
b34976b6 | 7042 | bfd_boolean |
217aa764 AM |
7043 | _bfd_elf_set_section_contents (bfd *abfd, |
7044 | sec_ptr section, | |
0f867abe | 7045 | const void *location, |
217aa764 AM |
7046 | file_ptr offset, |
7047 | bfd_size_type count) | |
252b5132 RH |
7048 | { |
7049 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7050 | bfd_signed_vma pos; |
252b5132 RH |
7051 | |
7052 | if (! abfd->output_has_begun | |
217aa764 | 7053 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7054 | return FALSE; |
252b5132 RH |
7055 | |
7056 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7057 | pos = hdr->sh_offset + offset; |
7058 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7059 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7060 | return FALSE; |
252b5132 | 7061 | |
b34976b6 | 7062 | return TRUE; |
252b5132 RH |
7063 | } |
7064 | ||
7065 | void | |
217aa764 AM |
7066 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7067 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7068 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7069 | { |
7070 | abort (); | |
7071 | } | |
7072 | ||
252b5132 RH |
7073 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7074 | ||
b34976b6 | 7075 | bfd_boolean |
217aa764 | 7076 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7077 | { |
c044fabd | 7078 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7079 | |
7080 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7081 | { | |
7082 | bfd_reloc_code_real_type code; | |
7083 | reloc_howto_type *howto; | |
7084 | ||
7085 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7086 | equivalent ELF reloc. */ |
252b5132 RH |
7087 | |
7088 | if (areloc->howto->pc_relative) | |
7089 | { | |
7090 | switch (areloc->howto->bitsize) | |
7091 | { | |
7092 | case 8: | |
7093 | code = BFD_RELOC_8_PCREL; | |
7094 | break; | |
7095 | case 12: | |
7096 | code = BFD_RELOC_12_PCREL; | |
7097 | break; | |
7098 | case 16: | |
7099 | code = BFD_RELOC_16_PCREL; | |
7100 | break; | |
7101 | case 24: | |
7102 | code = BFD_RELOC_24_PCREL; | |
7103 | break; | |
7104 | case 32: | |
7105 | code = BFD_RELOC_32_PCREL; | |
7106 | break; | |
7107 | case 64: | |
7108 | code = BFD_RELOC_64_PCREL; | |
7109 | break; | |
7110 | default: | |
7111 | goto fail; | |
7112 | } | |
7113 | ||
7114 | howto = bfd_reloc_type_lookup (abfd, code); | |
7115 | ||
7116 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7117 | { | |
7118 | if (howto->pcrel_offset) | |
7119 | areloc->addend += areloc->address; | |
7120 | else | |
7121 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7122 | } | |
7123 | } | |
7124 | else | |
7125 | { | |
7126 | switch (areloc->howto->bitsize) | |
7127 | { | |
7128 | case 8: | |
7129 | code = BFD_RELOC_8; | |
7130 | break; | |
7131 | case 14: | |
7132 | code = BFD_RELOC_14; | |
7133 | break; | |
7134 | case 16: | |
7135 | code = BFD_RELOC_16; | |
7136 | break; | |
7137 | case 26: | |
7138 | code = BFD_RELOC_26; | |
7139 | break; | |
7140 | case 32: | |
7141 | code = BFD_RELOC_32; | |
7142 | break; | |
7143 | case 64: | |
7144 | code = BFD_RELOC_64; | |
7145 | break; | |
7146 | default: | |
7147 | goto fail; | |
7148 | } | |
7149 | ||
7150 | howto = bfd_reloc_type_lookup (abfd, code); | |
7151 | } | |
7152 | ||
7153 | if (howto) | |
7154 | areloc->howto = howto; | |
7155 | else | |
7156 | goto fail; | |
7157 | } | |
7158 | ||
b34976b6 | 7159 | return TRUE; |
252b5132 RH |
7160 | |
7161 | fail: | |
7162 | (*_bfd_error_handler) | |
d003868e AM |
7163 | (_("%B: unsupported relocation type %s"), |
7164 | abfd, areloc->howto->name); | |
252b5132 | 7165 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7166 | return FALSE; |
252b5132 RH |
7167 | } |
7168 | ||
b34976b6 | 7169 | bfd_boolean |
217aa764 | 7170 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7171 | { |
7172 | if (bfd_get_format (abfd) == bfd_object) | |
7173 | { | |
7174 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 7175 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7176 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7177 | } |
7178 | ||
7179 | return _bfd_generic_close_and_cleanup (abfd); | |
7180 | } | |
7181 | ||
7182 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7183 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7184 | range-checking to interfere. There is nothing else to do in processing | |
7185 | this reloc. */ | |
7186 | ||
7187 | bfd_reloc_status_type | |
217aa764 AM |
7188 | _bfd_elf_rel_vtable_reloc_fn |
7189 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7190 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7191 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7192 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7193 | { |
7194 | return bfd_reloc_ok; | |
7195 | } | |
252b5132 RH |
7196 | \f |
7197 | /* Elf core file support. Much of this only works on native | |
7198 | toolchains, since we rely on knowing the | |
7199 | machine-dependent procfs structure in order to pick | |
c044fabd | 7200 | out details about the corefile. */ |
252b5132 RH |
7201 | |
7202 | #ifdef HAVE_SYS_PROCFS_H | |
7203 | # include <sys/procfs.h> | |
7204 | #endif | |
7205 | ||
c044fabd | 7206 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7207 | |
7208 | static int | |
217aa764 | 7209 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7210 | { |
7211 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7212 | + (elf_tdata (abfd)->core_pid)); | |
7213 | } | |
7214 | ||
252b5132 RH |
7215 | /* If there isn't a section called NAME, make one, using |
7216 | data from SECT. Note, this function will generate a | |
7217 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7218 | overwrite it. */ |
252b5132 | 7219 | |
b34976b6 | 7220 | static bfd_boolean |
217aa764 | 7221 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7222 | { |
c044fabd | 7223 | asection *sect2; |
252b5132 RH |
7224 | |
7225 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7226 | return TRUE; |
252b5132 RH |
7227 | |
7228 | sect2 = bfd_make_section (abfd, name); | |
7229 | if (sect2 == NULL) | |
b34976b6 | 7230 | return FALSE; |
252b5132 | 7231 | |
eea6121a | 7232 | sect2->size = sect->size; |
252b5132 RH |
7233 | sect2->filepos = sect->filepos; |
7234 | sect2->flags = sect->flags; | |
7235 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 7236 | return TRUE; |
252b5132 RH |
7237 | } |
7238 | ||
bb0082d6 AM |
7239 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7240 | actually creates up to two pseudosections: | |
7241 | - For the single-threaded case, a section named NAME, unless | |
7242 | such a section already exists. | |
7243 | - For the multi-threaded case, a section named "NAME/PID", where | |
7244 | PID is elfcore_make_pid (abfd). | |
7245 | Both pseudosections have identical contents. */ | |
b34976b6 | 7246 | bfd_boolean |
217aa764 AM |
7247 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7248 | char *name, | |
7249 | size_t size, | |
7250 | ufile_ptr filepos) | |
bb0082d6 AM |
7251 | { |
7252 | char buf[100]; | |
7253 | char *threaded_name; | |
d4c88bbb | 7254 | size_t len; |
bb0082d6 AM |
7255 | asection *sect; |
7256 | ||
7257 | /* Build the section name. */ | |
7258 | ||
7259 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7260 | len = strlen (buf) + 1; |
217aa764 | 7261 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7262 | if (threaded_name == NULL) |
b34976b6 | 7263 | return FALSE; |
d4c88bbb | 7264 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7265 | |
62f3bb11 | 7266 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 7267 | if (sect == NULL) |
b34976b6 | 7268 | return FALSE; |
eea6121a | 7269 | sect->size = size; |
bb0082d6 AM |
7270 | sect->filepos = filepos; |
7271 | sect->flags = SEC_HAS_CONTENTS; | |
7272 | sect->alignment_power = 2; | |
7273 | ||
936e320b | 7274 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7275 | } |
7276 | ||
252b5132 | 7277 | /* prstatus_t exists on: |
4a938328 | 7278 | solaris 2.5+ |
252b5132 RH |
7279 | linux 2.[01] + glibc |
7280 | unixware 4.2 | |
7281 | */ | |
7282 | ||
7283 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7284 | |
b34976b6 | 7285 | static bfd_boolean |
217aa764 | 7286 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7287 | { |
eea6121a | 7288 | size_t size; |
7ee38065 | 7289 | int offset; |
252b5132 | 7290 | |
4a938328 MS |
7291 | if (note->descsz == sizeof (prstatus_t)) |
7292 | { | |
7293 | prstatus_t prstat; | |
252b5132 | 7294 | |
eea6121a | 7295 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7296 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7297 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7298 | |
fa49d224 NC |
7299 | /* Do not overwrite the core signal if it |
7300 | has already been set by another thread. */ | |
7301 | if (elf_tdata (abfd)->core_signal == 0) | |
7302 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7303 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7304 | |
4a938328 MS |
7305 | /* pr_who exists on: |
7306 | solaris 2.5+ | |
7307 | unixware 4.2 | |
7308 | pr_who doesn't exist on: | |
7309 | linux 2.[01] | |
7310 | */ | |
252b5132 | 7311 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7312 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7313 | #endif |
4a938328 | 7314 | } |
7ee38065 | 7315 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7316 | else if (note->descsz == sizeof (prstatus32_t)) |
7317 | { | |
7318 | /* 64-bit host, 32-bit corefile */ | |
7319 | prstatus32_t prstat; | |
7320 | ||
eea6121a | 7321 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7322 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7323 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7324 | ||
fa49d224 NC |
7325 | /* Do not overwrite the core signal if it |
7326 | has already been set by another thread. */ | |
7327 | if (elf_tdata (abfd)->core_signal == 0) | |
7328 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7329 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7330 | ||
7331 | /* pr_who exists on: | |
7332 | solaris 2.5+ | |
7333 | unixware 4.2 | |
7334 | pr_who doesn't exist on: | |
7335 | linux 2.[01] | |
7336 | */ | |
7ee38065 | 7337 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7338 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7339 | #endif | |
7340 | } | |
7ee38065 | 7341 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7342 | else |
7343 | { | |
7344 | /* Fail - we don't know how to handle any other | |
7345 | note size (ie. data object type). */ | |
b34976b6 | 7346 | return TRUE; |
4a938328 | 7347 | } |
252b5132 | 7348 | |
bb0082d6 | 7349 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7350 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7351 | size, note->descpos + offset); |
252b5132 RH |
7352 | } |
7353 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7354 | ||
bb0082d6 | 7355 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7356 | static bfd_boolean |
217aa764 AM |
7357 | elfcore_make_note_pseudosection (bfd *abfd, |
7358 | char *name, | |
7359 | Elf_Internal_Note *note) | |
252b5132 | 7360 | { |
936e320b AM |
7361 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7362 | note->descsz, note->descpos); | |
252b5132 RH |
7363 | } |
7364 | ||
ff08c6bb JB |
7365 | /* There isn't a consistent prfpregset_t across platforms, |
7366 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7367 | data structure apart. */ |
7368 | ||
b34976b6 | 7369 | static bfd_boolean |
217aa764 | 7370 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7371 | { |
7372 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7373 | } | |
7374 | ||
ff08c6bb JB |
7375 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7376 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7377 | literally. */ | |
c044fabd | 7378 | |
b34976b6 | 7379 | static bfd_boolean |
217aa764 | 7380 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7381 | { |
7382 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7383 | } | |
7384 | ||
252b5132 | 7385 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7386 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7387 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7388 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7389 | #endif | |
252b5132 RH |
7390 | #endif |
7391 | ||
7392 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7393 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7394 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7395 | typedef psinfo32_t elfcore_psinfo32_t; |
7396 | #endif | |
252b5132 RH |
7397 | #endif |
7398 | ||
252b5132 RH |
7399 | /* return a malloc'ed copy of a string at START which is at |
7400 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7401 | the copy will always have a terminating '\0'. */ |
252b5132 | 7402 | |
936e320b | 7403 | char * |
217aa764 | 7404 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7405 | { |
dc810e39 | 7406 | char *dups; |
c044fabd | 7407 | char *end = memchr (start, '\0', max); |
dc810e39 | 7408 | size_t len; |
252b5132 RH |
7409 | |
7410 | if (end == NULL) | |
7411 | len = max; | |
7412 | else | |
7413 | len = end - start; | |
7414 | ||
217aa764 | 7415 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7416 | if (dups == NULL) |
252b5132 RH |
7417 | return NULL; |
7418 | ||
dc810e39 AM |
7419 | memcpy (dups, start, len); |
7420 | dups[len] = '\0'; | |
252b5132 | 7421 | |
dc810e39 | 7422 | return dups; |
252b5132 RH |
7423 | } |
7424 | ||
bb0082d6 | 7425 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7426 | static bfd_boolean |
217aa764 | 7427 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7428 | { |
4a938328 MS |
7429 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7430 | { | |
7431 | elfcore_psinfo_t psinfo; | |
252b5132 | 7432 | |
7ee38065 | 7433 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7434 | |
4a938328 | 7435 | elf_tdata (abfd)->core_program |
936e320b AM |
7436 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7437 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7438 | |
4a938328 | 7439 | elf_tdata (abfd)->core_command |
936e320b AM |
7440 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7441 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7442 | } |
7ee38065 | 7443 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7444 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7445 | { | |
7446 | /* 64-bit host, 32-bit corefile */ | |
7447 | elfcore_psinfo32_t psinfo; | |
7448 | ||
7ee38065 | 7449 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7450 | |
4a938328 | 7451 | elf_tdata (abfd)->core_program |
936e320b AM |
7452 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7453 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7454 | |
7455 | elf_tdata (abfd)->core_command | |
936e320b AM |
7456 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7457 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7458 | } |
7459 | #endif | |
7460 | ||
7461 | else | |
7462 | { | |
7463 | /* Fail - we don't know how to handle any other | |
7464 | note size (ie. data object type). */ | |
b34976b6 | 7465 | return TRUE; |
4a938328 | 7466 | } |
252b5132 RH |
7467 | |
7468 | /* Note that for some reason, a spurious space is tacked | |
7469 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7470 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7471 | |
7472 | { | |
c044fabd | 7473 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7474 | int n = strlen (command); |
7475 | ||
7476 | if (0 < n && command[n - 1] == ' ') | |
7477 | command[n - 1] = '\0'; | |
7478 | } | |
7479 | ||
b34976b6 | 7480 | return TRUE; |
252b5132 RH |
7481 | } |
7482 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7483 | ||
252b5132 | 7484 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7485 | static bfd_boolean |
217aa764 | 7486 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7487 | { |
f572a39d AM |
7488 | if (note->descsz == sizeof (pstatus_t) |
7489 | #if defined (HAVE_PXSTATUS_T) | |
7490 | || note->descsz == sizeof (pxstatus_t) | |
7491 | #endif | |
7492 | ) | |
4a938328 MS |
7493 | { |
7494 | pstatus_t pstat; | |
252b5132 | 7495 | |
4a938328 | 7496 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7497 | |
4a938328 MS |
7498 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7499 | } | |
7ee38065 | 7500 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7501 | else if (note->descsz == sizeof (pstatus32_t)) |
7502 | { | |
7503 | /* 64-bit host, 32-bit corefile */ | |
7504 | pstatus32_t pstat; | |
252b5132 | 7505 | |
4a938328 | 7506 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7507 | |
4a938328 MS |
7508 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7509 | } | |
7510 | #endif | |
252b5132 RH |
7511 | /* Could grab some more details from the "representative" |
7512 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7513 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7514 | |
b34976b6 | 7515 | return TRUE; |
252b5132 RH |
7516 | } |
7517 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7518 | ||
252b5132 | 7519 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7520 | static bfd_boolean |
217aa764 | 7521 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7522 | { |
7523 | lwpstatus_t lwpstat; | |
7524 | char buf[100]; | |
c044fabd | 7525 | char *name; |
d4c88bbb | 7526 | size_t len; |
c044fabd | 7527 | asection *sect; |
252b5132 | 7528 | |
f572a39d AM |
7529 | if (note->descsz != sizeof (lwpstat) |
7530 | #if defined (HAVE_LWPXSTATUS_T) | |
7531 | && note->descsz != sizeof (lwpxstatus_t) | |
7532 | #endif | |
7533 | ) | |
b34976b6 | 7534 | return TRUE; |
252b5132 RH |
7535 | |
7536 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7537 | ||
7538 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7539 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7540 | ||
c044fabd | 7541 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7542 | |
7543 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7544 | len = strlen (buf) + 1; |
217aa764 | 7545 | name = bfd_alloc (abfd, len); |
252b5132 | 7546 | if (name == NULL) |
b34976b6 | 7547 | return FALSE; |
d4c88bbb | 7548 | memcpy (name, buf, len); |
252b5132 | 7549 | |
62f3bb11 | 7550 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7551 | if (sect == NULL) |
b34976b6 | 7552 | return FALSE; |
252b5132 RH |
7553 | |
7554 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7555 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7556 | sect->filepos = note->descpos |
7557 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7558 | #endif | |
7559 | ||
7560 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7561 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7562 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7563 | #endif | |
7564 | ||
7565 | sect->flags = SEC_HAS_CONTENTS; | |
7566 | sect->alignment_power = 2; | |
7567 | ||
7568 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7569 | return FALSE; |
252b5132 RH |
7570 | |
7571 | /* Make a ".reg2/999" section */ | |
7572 | ||
7573 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7574 | len = strlen (buf) + 1; |
217aa764 | 7575 | name = bfd_alloc (abfd, len); |
252b5132 | 7576 | if (name == NULL) |
b34976b6 | 7577 | return FALSE; |
d4c88bbb | 7578 | memcpy (name, buf, len); |
252b5132 | 7579 | |
62f3bb11 | 7580 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7581 | if (sect == NULL) |
b34976b6 | 7582 | return FALSE; |
252b5132 RH |
7583 | |
7584 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7585 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7586 | sect->filepos = note->descpos |
7587 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7588 | #endif | |
7589 | ||
7590 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7591 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7592 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7593 | #endif | |
7594 | ||
7595 | sect->flags = SEC_HAS_CONTENTS; | |
7596 | sect->alignment_power = 2; | |
7597 | ||
936e320b | 7598 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7599 | } |
7600 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7601 | ||
16e9c715 | 7602 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7603 | static bfd_boolean |
217aa764 | 7604 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7605 | { |
7606 | char buf[30]; | |
c044fabd | 7607 | char *name; |
d4c88bbb | 7608 | size_t len; |
c044fabd | 7609 | asection *sect; |
16e9c715 NC |
7610 | win32_pstatus_t pstatus; |
7611 | ||
7612 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7613 | return TRUE; |
16e9c715 | 7614 | |
e8eab623 | 7615 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7616 | |
7617 | switch (pstatus.data_type) | |
16e9c715 NC |
7618 | { |
7619 | case NOTE_INFO_PROCESS: | |
7620 | /* FIXME: need to add ->core_command. */ | |
7621 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7622 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7623 | break; |
16e9c715 NC |
7624 | |
7625 | case NOTE_INFO_THREAD: | |
7626 | /* Make a ".reg/999" section. */ | |
1f170678 | 7627 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7628 | |
d4c88bbb | 7629 | len = strlen (buf) + 1; |
217aa764 | 7630 | name = bfd_alloc (abfd, len); |
16e9c715 | 7631 | if (name == NULL) |
b34976b6 | 7632 | return FALSE; |
c044fabd | 7633 | |
d4c88bbb | 7634 | memcpy (name, buf, len); |
16e9c715 | 7635 | |
62f3bb11 | 7636 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7637 | if (sect == NULL) |
b34976b6 | 7638 | return FALSE; |
c044fabd | 7639 | |
eea6121a | 7640 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7641 | sect->filepos = (note->descpos |
7642 | + offsetof (struct win32_pstatus, | |
7643 | data.thread_info.thread_context)); | |
16e9c715 NC |
7644 | sect->flags = SEC_HAS_CONTENTS; |
7645 | sect->alignment_power = 2; | |
7646 | ||
7647 | if (pstatus.data.thread_info.is_active_thread) | |
7648 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7649 | return FALSE; |
16e9c715 NC |
7650 | break; |
7651 | ||
7652 | case NOTE_INFO_MODULE: | |
7653 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7654 | sprintf (buf, ".module/%08lx", |
7655 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7656 | |
d4c88bbb | 7657 | len = strlen (buf) + 1; |
217aa764 | 7658 | name = bfd_alloc (abfd, len); |
16e9c715 | 7659 | if (name == NULL) |
b34976b6 | 7660 | return FALSE; |
c044fabd | 7661 | |
d4c88bbb | 7662 | memcpy (name, buf, len); |
252b5132 | 7663 | |
62f3bb11 | 7664 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7665 | |
16e9c715 | 7666 | if (sect == NULL) |
b34976b6 | 7667 | return FALSE; |
c044fabd | 7668 | |
eea6121a | 7669 | sect->size = note->descsz; |
16e9c715 NC |
7670 | sect->filepos = note->descpos; |
7671 | sect->flags = SEC_HAS_CONTENTS; | |
7672 | sect->alignment_power = 2; | |
7673 | break; | |
7674 | ||
7675 | default: | |
b34976b6 | 7676 | return TRUE; |
16e9c715 NC |
7677 | } |
7678 | ||
b34976b6 | 7679 | return TRUE; |
16e9c715 NC |
7680 | } |
7681 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7682 | |
b34976b6 | 7683 | static bfd_boolean |
217aa764 | 7684 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7685 | { |
9c5bfbb7 | 7686 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7687 | |
252b5132 RH |
7688 | switch (note->type) |
7689 | { | |
7690 | default: | |
b34976b6 | 7691 | return TRUE; |
252b5132 | 7692 | |
252b5132 | 7693 | case NT_PRSTATUS: |
bb0082d6 AM |
7694 | if (bed->elf_backend_grok_prstatus) |
7695 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7696 | return TRUE; |
bb0082d6 | 7697 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7698 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7699 | #else |
b34976b6 | 7700 | return TRUE; |
252b5132 RH |
7701 | #endif |
7702 | ||
7703 | #if defined (HAVE_PSTATUS_T) | |
7704 | case NT_PSTATUS: | |
7705 | return elfcore_grok_pstatus (abfd, note); | |
7706 | #endif | |
7707 | ||
7708 | #if defined (HAVE_LWPSTATUS_T) | |
7709 | case NT_LWPSTATUS: | |
7710 | return elfcore_grok_lwpstatus (abfd, note); | |
7711 | #endif | |
7712 | ||
7713 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7714 | return elfcore_grok_prfpreg (abfd, note); | |
7715 | ||
16e9c715 | 7716 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7717 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7718 | return elfcore_grok_win32pstatus (abfd, note); |
7719 | #endif | |
7720 | ||
c044fabd | 7721 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7722 | if (note->namesz == 6 |
7723 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7724 | return elfcore_grok_prxfpreg (abfd, note); |
7725 | else | |
b34976b6 | 7726 | return TRUE; |
ff08c6bb | 7727 | |
252b5132 RH |
7728 | case NT_PRPSINFO: |
7729 | case NT_PSINFO: | |
bb0082d6 AM |
7730 | if (bed->elf_backend_grok_psinfo) |
7731 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7732 | return TRUE; |
bb0082d6 | 7733 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7734 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7735 | #else |
b34976b6 | 7736 | return TRUE; |
252b5132 | 7737 | #endif |
3333a7c3 RM |
7738 | |
7739 | case NT_AUXV: | |
7740 | { | |
62f3bb11 | 7741 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7742 | |
7743 | if (sect == NULL) | |
7744 | return FALSE; | |
eea6121a | 7745 | sect->size = note->descsz; |
3333a7c3 RM |
7746 | sect->filepos = note->descpos; |
7747 | sect->flags = SEC_HAS_CONTENTS; | |
7748 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7749 | ||
7750 | return TRUE; | |
7751 | } | |
252b5132 RH |
7752 | } |
7753 | } | |
7754 | ||
b34976b6 | 7755 | static bfd_boolean |
217aa764 | 7756 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7757 | { |
7758 | char *cp; | |
7759 | ||
7760 | cp = strchr (note->namedata, '@'); | |
7761 | if (cp != NULL) | |
7762 | { | |
d2b64500 | 7763 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7764 | return TRUE; |
50b2bdb7 | 7765 | } |
b34976b6 | 7766 | return FALSE; |
50b2bdb7 AM |
7767 | } |
7768 | ||
b34976b6 | 7769 | static bfd_boolean |
217aa764 | 7770 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7771 | { |
7772 | ||
7773 | /* Signal number at offset 0x08. */ | |
7774 | elf_tdata (abfd)->core_signal | |
7775 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7776 | ||
7777 | /* Process ID at offset 0x50. */ | |
7778 | elf_tdata (abfd)->core_pid | |
7779 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7780 | ||
7781 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7782 | elf_tdata (abfd)->core_command | |
7783 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7784 | ||
7720ba9f MK |
7785 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7786 | note); | |
50b2bdb7 AM |
7787 | } |
7788 | ||
b34976b6 | 7789 | static bfd_boolean |
217aa764 | 7790 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7791 | { |
7792 | int lwp; | |
7793 | ||
7794 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7795 | elf_tdata (abfd)->core_lwpid = lwp; | |
7796 | ||
b4db1224 | 7797 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7798 | { |
7799 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7800 | find this note before any of the others, which is fine, | |
7801 | since the kernel writes this note out first when it | |
7802 | creates a core file. */ | |
47d9a591 | 7803 | |
50b2bdb7 AM |
7804 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7805 | } | |
7806 | ||
b4db1224 JT |
7807 | /* As of Jan 2002 there are no other machine-independent notes |
7808 | defined for NetBSD core files. If the note type is less | |
7809 | than the start of the machine-dependent note types, we don't | |
7810 | understand it. */ | |
47d9a591 | 7811 | |
b4db1224 | 7812 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7813 | return TRUE; |
50b2bdb7 AM |
7814 | |
7815 | ||
7816 | switch (bfd_get_arch (abfd)) | |
7817 | { | |
7818 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7819 | PT_GETFPREGS == mach+2. */ | |
7820 | ||
7821 | case bfd_arch_alpha: | |
7822 | case bfd_arch_sparc: | |
7823 | switch (note->type) | |
7824 | { | |
b4db1224 | 7825 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7826 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7827 | ||
b4db1224 | 7828 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7829 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7830 | ||
7831 | default: | |
b34976b6 | 7832 | return TRUE; |
50b2bdb7 AM |
7833 | } |
7834 | ||
7835 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7836 | PT_GETFPREGS == mach+3. */ | |
7837 | ||
7838 | default: | |
7839 | switch (note->type) | |
7840 | { | |
b4db1224 | 7841 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7842 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7843 | ||
b4db1224 | 7844 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7845 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7846 | ||
7847 | default: | |
b34976b6 | 7848 | return TRUE; |
50b2bdb7 AM |
7849 | } |
7850 | } | |
7851 | /* NOTREACHED */ | |
7852 | } | |
7853 | ||
07c6e936 | 7854 | static bfd_boolean |
217aa764 | 7855 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7856 | { |
7857 | void *ddata = note->descdata; | |
7858 | char buf[100]; | |
7859 | char *name; | |
7860 | asection *sect; | |
f8843e87 AM |
7861 | short sig; |
7862 | unsigned flags; | |
07c6e936 NC |
7863 | |
7864 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7865 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7866 | ||
f8843e87 AM |
7867 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7868 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7869 | ||
7870 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7871 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7872 | |
7873 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7874 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7875 | { | |
7876 | elf_tdata (abfd)->core_signal = sig; | |
7877 | elf_tdata (abfd)->core_lwpid = *tid; | |
7878 | } | |
07c6e936 | 7879 | |
f8843e87 AM |
7880 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7881 | do not come from signals so we make sure we set the current | |
7882 | thread just in case. */ | |
7883 | if (flags & 0x00000080) | |
7884 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7885 | |
7886 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7887 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7888 | |
217aa764 | 7889 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7890 | if (name == NULL) |
7891 | return FALSE; | |
7892 | strcpy (name, buf); | |
7893 | ||
62f3bb11 | 7894 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7895 | if (sect == NULL) |
7896 | return FALSE; | |
7897 | ||
eea6121a | 7898 | sect->size = note->descsz; |
07c6e936 NC |
7899 | sect->filepos = note->descpos; |
7900 | sect->flags = SEC_HAS_CONTENTS; | |
7901 | sect->alignment_power = 2; | |
7902 | ||
7903 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7904 | } | |
7905 | ||
7906 | static bfd_boolean | |
d69f560c KW |
7907 | elfcore_grok_nto_regs (bfd *abfd, |
7908 | Elf_Internal_Note *note, | |
7909 | pid_t tid, | |
7910 | char *base) | |
07c6e936 NC |
7911 | { |
7912 | char buf[100]; | |
7913 | char *name; | |
7914 | asection *sect; | |
7915 | ||
d69f560c | 7916 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7917 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7918 | |
217aa764 | 7919 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7920 | if (name == NULL) |
7921 | return FALSE; | |
7922 | strcpy (name, buf); | |
7923 | ||
62f3bb11 | 7924 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7925 | if (sect == NULL) |
7926 | return FALSE; | |
7927 | ||
eea6121a | 7928 | sect->size = note->descsz; |
07c6e936 NC |
7929 | sect->filepos = note->descpos; |
7930 | sect->flags = SEC_HAS_CONTENTS; | |
7931 | sect->alignment_power = 2; | |
7932 | ||
f8843e87 AM |
7933 | /* This is the current thread. */ |
7934 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7935 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7936 | |
7937 | return TRUE; | |
07c6e936 NC |
7938 | } |
7939 | ||
7940 | #define BFD_QNT_CORE_INFO 7 | |
7941 | #define BFD_QNT_CORE_STATUS 8 | |
7942 | #define BFD_QNT_CORE_GREG 9 | |
7943 | #define BFD_QNT_CORE_FPREG 10 | |
7944 | ||
7945 | static bfd_boolean | |
217aa764 | 7946 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7947 | { |
7948 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7949 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7950 | function. */ |
7951 | static pid_t tid = 1; | |
7952 | ||
7953 | switch (note->type) | |
7954 | { | |
d69f560c KW |
7955 | case BFD_QNT_CORE_INFO: |
7956 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7957 | case BFD_QNT_CORE_STATUS: | |
7958 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7959 | case BFD_QNT_CORE_GREG: | |
7960 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7961 | case BFD_QNT_CORE_FPREG: | |
7962 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7963 | default: | |
7964 | return TRUE; | |
07c6e936 NC |
7965 | } |
7966 | } | |
7967 | ||
7c76fa91 MS |
7968 | /* Function: elfcore_write_note |
7969 | ||
47d9a591 | 7970 | Inputs: |
7c76fa91 MS |
7971 | buffer to hold note |
7972 | name of note | |
7973 | type of note | |
7974 | data for note | |
7975 | size of data for note | |
7976 | ||
7977 | Return: | |
7978 | End of buffer containing note. */ | |
7979 | ||
7980 | char * | |
217aa764 AM |
7981 | elfcore_write_note (bfd *abfd, |
7982 | char *buf, | |
7983 | int *bufsiz, | |
7984 | const char *name, | |
7985 | int type, | |
7986 | const void *input, | |
7987 | int size) | |
7c76fa91 MS |
7988 | { |
7989 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7990 | size_t namesz; |
7991 | size_t pad; | |
7992 | size_t newspace; | |
7c76fa91 MS |
7993 | char *p, *dest; |
7994 | ||
d4c88bbb AM |
7995 | namesz = 0; |
7996 | pad = 0; | |
7997 | if (name != NULL) | |
7998 | { | |
9c5bfbb7 | 7999 | const struct elf_backend_data *bed; |
d4c88bbb AM |
8000 | |
8001 | namesz = strlen (name) + 1; | |
8002 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 8003 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
8004 | } |
8005 | ||
5de3bf90 | 8006 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 8007 | |
7c76fa91 MS |
8008 | p = realloc (buf, *bufsiz + newspace); |
8009 | dest = p + *bufsiz; | |
8010 | *bufsiz += newspace; | |
8011 | xnp = (Elf_External_Note *) dest; | |
8012 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8013 | H_PUT_32 (abfd, size, xnp->descsz); | |
8014 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8015 | dest = xnp->name; |
8016 | if (name != NULL) | |
8017 | { | |
8018 | memcpy (dest, name, namesz); | |
8019 | dest += namesz; | |
8020 | while (pad != 0) | |
8021 | { | |
8022 | *dest++ = '\0'; | |
8023 | --pad; | |
8024 | } | |
8025 | } | |
8026 | memcpy (dest, input, size); | |
7c76fa91 MS |
8027 | return p; |
8028 | } | |
8029 | ||
8030 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8031 | char * | |
217aa764 AM |
8032 | elfcore_write_prpsinfo (bfd *abfd, |
8033 | char *buf, | |
8034 | int *bufsiz, | |
8035 | const char *fname, | |
8036 | const char *psargs) | |
7c76fa91 MS |
8037 | { |
8038 | int note_type; | |
8039 | char *note_name = "CORE"; | |
8040 | ||
8041 | #if defined (HAVE_PSINFO_T) | |
8042 | psinfo_t data; | |
8043 | note_type = NT_PSINFO; | |
8044 | #else | |
8045 | prpsinfo_t data; | |
8046 | note_type = NT_PRPSINFO; | |
8047 | #endif | |
8048 | ||
8049 | memset (&data, 0, sizeof (data)); | |
8050 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8051 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 8052 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8053 | note_name, note_type, &data, sizeof (data)); |
8054 | } | |
8055 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8056 | ||
8057 | #if defined (HAVE_PRSTATUS_T) | |
8058 | char * | |
217aa764 AM |
8059 | elfcore_write_prstatus (bfd *abfd, |
8060 | char *buf, | |
8061 | int *bufsiz, | |
8062 | long pid, | |
8063 | int cursig, | |
8064 | const void *gregs) | |
7c76fa91 MS |
8065 | { |
8066 | prstatus_t prstat; | |
8067 | char *note_name = "CORE"; | |
8068 | ||
8069 | memset (&prstat, 0, sizeof (prstat)); | |
8070 | prstat.pr_pid = pid; | |
8071 | prstat.pr_cursig = cursig; | |
c106e334 | 8072 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 8073 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8074 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
8075 | } | |
8076 | #endif /* HAVE_PRSTATUS_T */ | |
8077 | ||
51316059 MS |
8078 | #if defined (HAVE_LWPSTATUS_T) |
8079 | char * | |
217aa764 AM |
8080 | elfcore_write_lwpstatus (bfd *abfd, |
8081 | char *buf, | |
8082 | int *bufsiz, | |
8083 | long pid, | |
8084 | int cursig, | |
8085 | const void *gregs) | |
51316059 MS |
8086 | { |
8087 | lwpstatus_t lwpstat; | |
8088 | char *note_name = "CORE"; | |
8089 | ||
8090 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8091 | lwpstat.pr_lwpid = pid >> 16; | |
8092 | lwpstat.pr_cursig = cursig; | |
8093 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8094 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8095 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8096 | #if !defined(gregs) | |
8097 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8098 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8099 | #else | |
8100 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8101 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8102 | #endif | |
8103 | #endif | |
47d9a591 | 8104 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8105 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8106 | } | |
8107 | #endif /* HAVE_LWPSTATUS_T */ | |
8108 | ||
7c76fa91 MS |
8109 | #if defined (HAVE_PSTATUS_T) |
8110 | char * | |
217aa764 AM |
8111 | elfcore_write_pstatus (bfd *abfd, |
8112 | char *buf, | |
8113 | int *bufsiz, | |
8114 | long pid, | |
6c10990d NC |
8115 | int cursig ATTRIBUTE_UNUSED, |
8116 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 MS |
8117 | { |
8118 | pstatus_t pstat; | |
8119 | char *note_name = "CORE"; | |
8120 | ||
51316059 MS |
8121 | memset (&pstat, 0, sizeof (pstat)); |
8122 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 8123 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8124 | NT_PSTATUS, &pstat, sizeof (pstat)); |
8125 | return buf; | |
7c76fa91 MS |
8126 | } |
8127 | #endif /* HAVE_PSTATUS_T */ | |
8128 | ||
8129 | char * | |
217aa764 AM |
8130 | elfcore_write_prfpreg (bfd *abfd, |
8131 | char *buf, | |
8132 | int *bufsiz, | |
8133 | const void *fpregs, | |
8134 | int size) | |
7c76fa91 MS |
8135 | { |
8136 | char *note_name = "CORE"; | |
47d9a591 | 8137 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8138 | note_name, NT_FPREGSET, fpregs, size); |
8139 | } | |
8140 | ||
8141 | char * | |
217aa764 AM |
8142 | elfcore_write_prxfpreg (bfd *abfd, |
8143 | char *buf, | |
8144 | int *bufsiz, | |
8145 | const void *xfpregs, | |
8146 | int size) | |
7c76fa91 MS |
8147 | { |
8148 | char *note_name = "LINUX"; | |
47d9a591 | 8149 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8150 | note_name, NT_PRXFPREG, xfpregs, size); |
8151 | } | |
8152 | ||
b34976b6 | 8153 | static bfd_boolean |
217aa764 | 8154 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 8155 | { |
c044fabd KH |
8156 | char *buf; |
8157 | char *p; | |
252b5132 RH |
8158 | |
8159 | if (size <= 0) | |
b34976b6 | 8160 | return TRUE; |
252b5132 | 8161 | |
dc810e39 | 8162 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 8163 | return FALSE; |
252b5132 | 8164 | |
dc810e39 | 8165 | buf = bfd_malloc (size); |
252b5132 | 8166 | if (buf == NULL) |
b34976b6 | 8167 | return FALSE; |
252b5132 | 8168 | |
dc810e39 | 8169 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
8170 | { |
8171 | error: | |
8172 | free (buf); | |
b34976b6 | 8173 | return FALSE; |
252b5132 RH |
8174 | } |
8175 | ||
8176 | p = buf; | |
8177 | while (p < buf + size) | |
8178 | { | |
c044fabd KH |
8179 | /* FIXME: bad alignment assumption. */ |
8180 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8181 | Elf_Internal_Note in; |
8182 | ||
dc810e39 | 8183 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8184 | |
dc810e39 | 8185 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8186 | in.namedata = xnp->name; |
8187 | ||
dc810e39 | 8188 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8189 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8190 | in.descpos = offset + (in.descdata - buf); | |
8191 | ||
50b2bdb7 AM |
8192 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
8193 | { | |
8194 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8195 | goto error; | |
8196 | } | |
07c6e936 NC |
8197 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
8198 | { | |
8199 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8200 | goto error; | |
8201 | } | |
50b2bdb7 AM |
8202 | else |
8203 | { | |
8204 | if (! elfcore_grok_note (abfd, &in)) | |
8205 | goto error; | |
8206 | } | |
252b5132 RH |
8207 | |
8208 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8209 | } | |
8210 | ||
8211 | free (buf); | |
b34976b6 | 8212 | return TRUE; |
252b5132 | 8213 | } |
98d8431c JB |
8214 | \f |
8215 | /* Providing external access to the ELF program header table. */ | |
8216 | ||
8217 | /* Return an upper bound on the number of bytes required to store a | |
8218 | copy of ABFD's program header table entries. Return -1 if an error | |
8219 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8220 | |
98d8431c | 8221 | long |
217aa764 | 8222 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8223 | { |
8224 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8225 | { | |
8226 | bfd_set_error (bfd_error_wrong_format); | |
8227 | return -1; | |
8228 | } | |
8229 | ||
936e320b | 8230 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8231 | } |
8232 | ||
98d8431c JB |
8233 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8234 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8235 | defined in include/elf/internal.h. To find out how large the | |
8236 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8237 | ||
8238 | Return the number of program header table entries read, or -1 if an | |
8239 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8240 | |
98d8431c | 8241 | int |
217aa764 | 8242 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8243 | { |
8244 | int num_phdrs; | |
8245 | ||
8246 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8247 | { | |
8248 | bfd_set_error (bfd_error_wrong_format); | |
8249 | return -1; | |
8250 | } | |
8251 | ||
8252 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8253 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8254 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8255 | ||
8256 | return num_phdrs; | |
8257 | } | |
ae4221d7 L |
8258 | |
8259 | void | |
217aa764 | 8260 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8261 | { |
d3b05f8d | 8262 | #ifdef BFD64 |
ae4221d7 L |
8263 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8264 | ||
8265 | i_ehdrp = elf_elfheader (abfd); | |
8266 | if (i_ehdrp == NULL) | |
8267 | sprintf_vma (buf, value); | |
8268 | else | |
8269 | { | |
8270 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8271 | { |
ae4221d7 | 8272 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8273 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8274 | #else |
cc55aec9 AM |
8275 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8276 | _bfd_int64_low (value)); | |
ae4221d7 | 8277 | #endif |
cc55aec9 | 8278 | } |
ae4221d7 L |
8279 | else |
8280 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8281 | } | |
d3b05f8d L |
8282 | #else |
8283 | sprintf_vma (buf, value); | |
8284 | #endif | |
ae4221d7 L |
8285 | } |
8286 | ||
8287 | void | |
217aa764 | 8288 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8289 | { |
d3b05f8d | 8290 | #ifdef BFD64 |
ae4221d7 L |
8291 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8292 | ||
8293 | i_ehdrp = elf_elfheader (abfd); | |
8294 | if (i_ehdrp == NULL) | |
8295 | fprintf_vma ((FILE *) stream, value); | |
8296 | else | |
8297 | { | |
8298 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8299 | { |
ae4221d7 | 8300 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8301 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8302 | #else |
cc55aec9 AM |
8303 | fprintf ((FILE *) stream, "%08lx%08lx", |
8304 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8305 | #endif |
cc55aec9 | 8306 | } |
ae4221d7 L |
8307 | else |
8308 | fprintf ((FILE *) stream, "%08lx", | |
8309 | (unsigned long) (value & 0xffffffff)); | |
8310 | } | |
d3b05f8d L |
8311 | #else |
8312 | fprintf_vma ((FILE *) stream, value); | |
8313 | #endif | |
ae4221d7 | 8314 | } |
db6751f2 JJ |
8315 | |
8316 | enum elf_reloc_type_class | |
217aa764 | 8317 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8318 | { |
8319 | return reloc_class_normal; | |
8320 | } | |
f8df10f4 | 8321 | |
47d9a591 | 8322 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8323 | relocation against a local symbol. */ |
8324 | ||
8325 | bfd_vma | |
217aa764 AM |
8326 | _bfd_elf_rela_local_sym (bfd *abfd, |
8327 | Elf_Internal_Sym *sym, | |
8517fae7 | 8328 | asection **psec, |
217aa764 | 8329 | Elf_Internal_Rela *rel) |
f8df10f4 | 8330 | { |
8517fae7 | 8331 | asection *sec = *psec; |
f8df10f4 JJ |
8332 | bfd_vma relocation; |
8333 | ||
8334 | relocation = (sec->output_section->vma | |
8335 | + sec->output_offset | |
8336 | + sym->st_value); | |
8337 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8338 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8339 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8340 | { |
f8df10f4 | 8341 | rel->r_addend = |
8517fae7 | 8342 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8343 | elf_section_data (sec)->sec_info, |
753731ee AM |
8344 | sym->st_value + rel->r_addend); |
8345 | if (sec != *psec) | |
8346 | { | |
8347 | /* If we have changed the section, and our original section is | |
8348 | marked with SEC_EXCLUDE, it means that the original | |
8349 | SEC_MERGE section has been completely subsumed in some | |
8350 | other SEC_MERGE section. In this case, we need to leave | |
8351 | some info around for --emit-relocs. */ | |
8352 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8353 | sec->kept_section = *psec; | |
8354 | sec = *psec; | |
8355 | } | |
8517fae7 AM |
8356 | rel->r_addend -= relocation; |
8357 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8358 | } |
8359 | return relocation; | |
8360 | } | |
c629eae0 JJ |
8361 | |
8362 | bfd_vma | |
217aa764 AM |
8363 | _bfd_elf_rel_local_sym (bfd *abfd, |
8364 | Elf_Internal_Sym *sym, | |
8365 | asection **psec, | |
8366 | bfd_vma addend) | |
47d9a591 | 8367 | { |
c629eae0 JJ |
8368 | asection *sec = *psec; |
8369 | ||
68bfbfcc | 8370 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8371 | return sym->st_value + addend; |
8372 | ||
8373 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8374 | elf_section_data (sec)->sec_info, |
753731ee | 8375 | sym->st_value + addend); |
c629eae0 JJ |
8376 | } |
8377 | ||
8378 | bfd_vma | |
217aa764 | 8379 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8380 | struct bfd_link_info *info, |
217aa764 AM |
8381 | asection *sec, |
8382 | bfd_vma offset) | |
c629eae0 | 8383 | { |
68bfbfcc | 8384 | switch (sec->sec_info_type) |
65765700 JJ |
8385 | { |
8386 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8387 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8388 | offset); | |
65765700 | 8389 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8390 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8391 | default: |
8392 | return offset; | |
8393 | } | |
c629eae0 | 8394 | } |
3333a7c3 RM |
8395 | \f |
8396 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8397 | reconstruct an ELF file by reading the segments out of remote memory | |
8398 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8399 | points to. If not null, *LOADBASEP is filled in with the difference | |
8400 | between the VMAs from which the segments were read, and the VMAs the | |
8401 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8402 | ||
8403 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8404 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8405 | should return zero on success or an `errno' code on failure. TEMPL must | |
8406 | be a BFD for an ELF target with the word size and byte order found in | |
8407 | the remote memory. */ | |
8408 | ||
8409 | bfd * | |
217aa764 AM |
8410 | bfd_elf_bfd_from_remote_memory |
8411 | (bfd *templ, | |
8412 | bfd_vma ehdr_vma, | |
8413 | bfd_vma *loadbasep, | |
f075ee0c | 8414 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8415 | { |
8416 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8417 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8418 | } | |
4c45e5c9 JJ |
8419 | \f |
8420 | long | |
c9727e01 AM |
8421 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8422 | long symcount ATTRIBUTE_UNUSED, | |
8423 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8424 | long dynsymcount, |
c9727e01 AM |
8425 | asymbol **dynsyms, |
8426 | asymbol **ret) | |
4c45e5c9 JJ |
8427 | { |
8428 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8429 | asection *relplt; | |
8430 | asymbol *s; | |
8431 | const char *relplt_name; | |
8432 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8433 | arelent *p; | |
8434 | long count, i, n; | |
8435 | size_t size; | |
8436 | Elf_Internal_Shdr *hdr; | |
8437 | char *names; | |
8438 | asection *plt; | |
8439 | ||
8615f3f2 AM |
8440 | *ret = NULL; |
8441 | ||
90e3cdf2 JJ |
8442 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8443 | return 0; | |
8444 | ||
8615f3f2 AM |
8445 | if (dynsymcount <= 0) |
8446 | return 0; | |
8447 | ||
4c45e5c9 JJ |
8448 | if (!bed->plt_sym_val) |
8449 | return 0; | |
8450 | ||
8451 | relplt_name = bed->relplt_name; | |
8452 | if (relplt_name == NULL) | |
8453 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8454 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8455 | if (relplt == NULL) | |
8456 | return 0; | |
8457 | ||
8458 | hdr = &elf_section_data (relplt)->this_hdr; | |
8459 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8460 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8461 | return 0; | |
8462 | ||
8463 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8464 | if (plt == NULL) | |
8465 | return 0; | |
8466 | ||
8467 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8468 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8469 | return -1; |
8470 | ||
eea6121a | 8471 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8472 | size = count * sizeof (asymbol); |
8473 | p = relplt->relocation; | |
8474 | for (i = 0; i < count; i++, s++, p++) | |
8475 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8476 | ||
8477 | s = *ret = bfd_malloc (size); | |
8478 | if (s == NULL) | |
8479 | return -1; | |
8480 | ||
8481 | names = (char *) (s + count); | |
8482 | p = relplt->relocation; | |
8483 | n = 0; | |
8484 | for (i = 0; i < count; i++, s++, p++) | |
8485 | { | |
8486 | size_t len; | |
8487 | bfd_vma addr; | |
8488 | ||
8489 | addr = bed->plt_sym_val (i, plt, p); | |
8490 | if (addr == (bfd_vma) -1) | |
8491 | continue; | |
8492 | ||
8493 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8494 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8495 | we are defining a symbol, ensure one of them is set. */ | |
8496 | if ((s->flags & BSF_LOCAL) == 0) | |
8497 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8498 | s->section = plt; |
8499 | s->value = addr - plt->vma; | |
8500 | s->name = names; | |
8501 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8502 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8503 | names += len; | |
8504 | memcpy (names, "@plt", sizeof ("@plt")); | |
8505 | names += sizeof ("@plt"); | |
8506 | ++n; | |
8507 | } | |
8508 | ||
8509 | return n; | |
8510 | } | |
3d7f7666 L |
8511 | |
8512 | /* Sort symbol by binding and section. We want to put definitions | |
8513 | sorted by section at the beginning. */ | |
8514 | ||
8515 | static int | |
8516 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8517 | { | |
8518 | const Elf_Internal_Sym *s1; | |
8519 | const Elf_Internal_Sym *s2; | |
8520 | int shndx; | |
8521 | ||
8522 | /* Make sure that undefined symbols are at the end. */ | |
8523 | s1 = (const Elf_Internal_Sym *) arg1; | |
8524 | if (s1->st_shndx == SHN_UNDEF) | |
8525 | return 1; | |
8526 | s2 = (const Elf_Internal_Sym *) arg2; | |
8527 | if (s2->st_shndx == SHN_UNDEF) | |
8528 | return -1; | |
8529 | ||
8530 | /* Sorted by section index. */ | |
8531 | shndx = s1->st_shndx - s2->st_shndx; | |
8532 | if (shndx != 0) | |
8533 | return shndx; | |
8534 | ||
8535 | /* Sorted by binding. */ | |
8536 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8537 | } | |
8538 | ||
8539 | struct elf_symbol | |
8540 | { | |
8541 | Elf_Internal_Sym *sym; | |
8542 | const char *name; | |
8543 | }; | |
8544 | ||
8545 | static int | |
8546 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8547 | { | |
8548 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8549 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8550 | return strcmp (s1->name, s2->name); | |
8551 | } | |
8552 | ||
8553 | /* Check if 2 sections define the same set of local and global | |
8554 | symbols. */ | |
8555 | ||
8556 | bfd_boolean | |
8557 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8558 | { | |
8559 | bfd *bfd1, *bfd2; | |
8560 | const struct elf_backend_data *bed1, *bed2; | |
8561 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8562 | bfd_size_type symcount1, symcount2; | |
8563 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8564 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8565 | Elf_Internal_Sym *isymend; | |
8566 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8567 | bfd_size_type count1, count2, i; | |
8568 | int shndx1, shndx2; | |
8569 | bfd_boolean result; | |
8570 | ||
8571 | bfd1 = sec1->owner; | |
8572 | bfd2 = sec2->owner; | |
8573 | ||
8574 | /* If both are .gnu.linkonce sections, they have to have the same | |
8575 | section name. */ | |
8576 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8577 | sizeof ".gnu.linkonce" - 1) == 0 | |
8578 | && strncmp (sec2->name, ".gnu.linkonce", | |
8579 | sizeof ".gnu.linkonce" - 1) == 0) | |
8580 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8581 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8582 | ||
8583 | /* Both sections have to be in ELF. */ | |
8584 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8585 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8586 | return FALSE; | |
8587 | ||
8588 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8589 | return FALSE; | |
8590 | ||
8591 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8592 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8593 | { | |
8594 | /* If both are members of section groups, they have to have the | |
8595 | same group name. */ | |
8596 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8597 | return FALSE; | |
8598 | } | |
8599 | ||
8600 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8601 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8602 | if (shndx1 == -1 || shndx2 == -1) | |
8603 | return FALSE; | |
8604 | ||
8605 | bed1 = get_elf_backend_data (bfd1); | |
8606 | bed2 = get_elf_backend_data (bfd2); | |
8607 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8608 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8609 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8610 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8611 | ||
8612 | if (symcount1 == 0 || symcount2 == 0) | |
8613 | return FALSE; | |
8614 | ||
8615 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8616 | NULL, NULL, NULL); | |
8617 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8618 | NULL, NULL, NULL); | |
8619 | ||
8620 | result = FALSE; | |
8621 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8622 | goto done; | |
8623 | ||
8624 | /* Sort symbols by binding and section. Global definitions are at | |
8625 | the beginning. */ | |
8626 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8627 | elf_sort_elf_symbol); | |
8628 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8629 | elf_sort_elf_symbol); | |
8630 | ||
8631 | /* Count definitions in the section. */ | |
8632 | count1 = 0; | |
8633 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8634 | isym < isymend; isym++) | |
8635 | { | |
8636 | if (isym->st_shndx == (unsigned int) shndx1) | |
8637 | { | |
8638 | if (count1 == 0) | |
8639 | isymstart1 = isym; | |
8640 | count1++; | |
8641 | } | |
8642 | ||
8643 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8644 | break; | |
8645 | } | |
8646 | ||
8647 | count2 = 0; | |
8648 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8649 | isym < isymend; isym++) | |
8650 | { | |
8651 | if (isym->st_shndx == (unsigned int) shndx2) | |
8652 | { | |
8653 | if (count2 == 0) | |
8654 | isymstart2 = isym; | |
8655 | count2++; | |
8656 | } | |
8657 | ||
8658 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8659 | break; | |
8660 | } | |
8661 | ||
8662 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8663 | goto done; | |
8664 | ||
8665 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8666 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8667 | ||
8668 | if (symtable1 == NULL || symtable2 == NULL) | |
8669 | goto done; | |
8670 | ||
8671 | symp = symtable1; | |
8672 | for (isym = isymstart1, isymend = isym + count1; | |
8673 | isym < isymend; isym++) | |
8674 | { | |
8675 | symp->sym = isym; | |
8676 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8677 | hdr1->sh_link, | |
8678 | isym->st_name); | |
8679 | symp++; | |
8680 | } | |
8681 | ||
8682 | symp = symtable2; | |
8683 | for (isym = isymstart2, isymend = isym + count1; | |
8684 | isym < isymend; isym++) | |
8685 | { | |
8686 | symp->sym = isym; | |
8687 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8688 | hdr2->sh_link, | |
8689 | isym->st_name); | |
8690 | symp++; | |
8691 | } | |
8692 | ||
8693 | /* Sort symbol by name. */ | |
8694 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8695 | elf_sym_name_compare); | |
8696 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8697 | elf_sym_name_compare); | |
8698 | ||
8699 | for (i = 0; i < count1; i++) | |
8700 | /* Two symbols must have the same binding, type and name. */ | |
8701 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8702 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8703 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8704 | goto done; | |
8705 | ||
8706 | result = TRUE; | |
8707 | ||
8708 | done: | |
8709 | if (symtable1) | |
8710 | free (symtable1); | |
8711 | if (symtable2) | |
8712 | free (symtable2); | |
8713 | if (isymbuf1) | |
8714 | free (isymbuf1); | |
8715 | if (isymbuf2) | |
8716 | free (isymbuf2); | |
8717 | ||
8718 | return result; | |
8719 | } | |
3b22753a L |
8720 | |
8721 | /* It is only used by x86-64 so far. */ | |
8722 | asection _bfd_elf_large_com_section | |
8723 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
8724 | SEC_IS_COMMON, NULL, NULL, "LARGE_COMMON", | |
8725 | 0); | |
ecca9871 L |
8726 | |
8727 | /* Return TRUE if 2 section types are compatible. */ | |
8728 | ||
8729 | bfd_boolean | |
8730 | _bfd_elf_match_sections_by_type (bfd *abfd, const asection *asec, | |
8731 | bfd *bbfd, const asection *bsec) | |
8732 | { | |
8733 | if (asec == NULL | |
8734 | || bsec == NULL | |
8735 | || abfd->xvec->flavour != bfd_target_elf_flavour | |
8736 | || bbfd->xvec->flavour != bfd_target_elf_flavour) | |
8737 | return TRUE; | |
8738 | ||
8739 | return elf_section_type (asec) == elf_section_type (bsec); | |
8740 | } |