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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, | |
8615f3f2 | 4 | 2002, 2003, 2004, 2005 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 | |
661a3fd4 | 22 | /* SECTION |
47d9a591 | 23 | |
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 L |
628 | bfd_boolean |
629 | _bfd_elf_setup_group_pointers (bfd *abfd) | |
630 | { | |
631 | unsigned int i; | |
632 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
633 | bfd_boolean result = TRUE; | |
634 | ||
635 | if (num_group == (unsigned) -1) | |
636 | return result; | |
637 | ||
638 | for (i = 0; i < num_group; i++) | |
639 | { | |
640 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
641 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
642 | unsigned int n_elt = shdr->sh_size / 4; | |
643 | ||
644 | while (--n_elt != 0) | |
645 | if ((++idx)->shdr->bfd_section) | |
646 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
647 | else if (idx->shdr->sh_type == SHT_RELA | |
648 | || idx->shdr->sh_type == SHT_REL) | |
649 | /* We won't include relocation sections in section groups in | |
650 | output object files. We adjust the group section size here | |
651 | so that relocatable link will work correctly when | |
652 | relocation sections are in section group in input object | |
653 | files. */ | |
654 | shdr->bfd_section->size -= 4; | |
655 | else | |
656 | { | |
657 | /* There are some unknown sections in the group. */ | |
658 | (*_bfd_error_handler) | |
d003868e AM |
659 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
660 | abfd, | |
3d7f7666 | 661 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
662 | bfd_elf_string_from_elf_section (abfd, |
663 | (elf_elfheader (abfd) | |
664 | ->e_shstrndx), | |
665 | idx->shdr->sh_name), | |
3d7f7666 L |
666 | shdr->bfd_section->name); |
667 | result = FALSE; | |
668 | } | |
669 | } | |
670 | return result; | |
671 | } | |
672 | ||
72adc230 AM |
673 | bfd_boolean |
674 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
675 | { | |
676 | return elf_next_in_group (sec) != NULL; | |
677 | } | |
678 | ||
252b5132 RH |
679 | /* Make a BFD section from an ELF section. We store a pointer to the |
680 | BFD section in the bfd_section field of the header. */ | |
681 | ||
b34976b6 | 682 | bfd_boolean |
217aa764 AM |
683 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
684 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
685 | const char *name, |
686 | int shindex) | |
252b5132 RH |
687 | { |
688 | asection *newsect; | |
689 | flagword flags; | |
9c5bfbb7 | 690 | const struct elf_backend_data *bed; |
252b5132 RH |
691 | |
692 | if (hdr->bfd_section != NULL) | |
693 | { | |
694 | BFD_ASSERT (strcmp (name, | |
695 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 696 | return TRUE; |
252b5132 RH |
697 | } |
698 | ||
699 | newsect = bfd_make_section_anyway (abfd, name); | |
700 | if (newsect == NULL) | |
b34976b6 | 701 | return FALSE; |
252b5132 | 702 | |
1829f4b2 AM |
703 | hdr->bfd_section = newsect; |
704 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 705 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 706 | |
2f89ff8d L |
707 | /* Always use the real type/flags. */ |
708 | elf_section_type (newsect) = hdr->sh_type; | |
709 | elf_section_flags (newsect) = hdr->sh_flags; | |
710 | ||
252b5132 RH |
711 | newsect->filepos = hdr->sh_offset; |
712 | ||
713 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
714 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
715 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 716 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 717 | return FALSE; |
252b5132 RH |
718 | |
719 | flags = SEC_NO_FLAGS; | |
720 | if (hdr->sh_type != SHT_NOBITS) | |
721 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 722 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 723 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
724 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
725 | { | |
726 | flags |= SEC_ALLOC; | |
727 | if (hdr->sh_type != SHT_NOBITS) | |
728 | flags |= SEC_LOAD; | |
729 | } | |
730 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
731 | flags |= SEC_READONLY; | |
732 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
733 | flags |= SEC_CODE; | |
734 | else if ((flags & SEC_LOAD) != 0) | |
735 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
736 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
737 | { | |
738 | flags |= SEC_MERGE; | |
739 | newsect->entsize = hdr->sh_entsize; | |
740 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
741 | flags |= SEC_STRINGS; | |
742 | } | |
dbb410c3 AM |
743 | if (hdr->sh_flags & SHF_GROUP) |
744 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 745 | return FALSE; |
13ae64f3 JJ |
746 | if ((hdr->sh_flags & SHF_TLS) != 0) |
747 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 748 | |
3d2b39cf | 749 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 750 | { |
3d2b39cf L |
751 | /* The debugging sections appear to be recognized only by name, |
752 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
753 | static const struct | |
754 | { | |
755 | const char *name; | |
756 | int len; | |
757 | } debug_sections [] = | |
758 | { | |
759 | { "debug", 5 }, /* 'd' */ | |
760 | { NULL, 0 }, /* 'e' */ | |
761 | { NULL, 0 }, /* 'f' */ | |
762 | { "gnu.linkonce.wi.", 17 }, /* 'g' */ | |
763 | { NULL, 0 }, /* 'h' */ | |
764 | { NULL, 0 }, /* 'i' */ | |
765 | { NULL, 0 }, /* 'j' */ | |
766 | { NULL, 0 }, /* 'k' */ | |
767 | { "line", 4 }, /* 'l' */ | |
768 | { NULL, 0 }, /* 'm' */ | |
769 | { NULL, 0 }, /* 'n' */ | |
770 | { NULL, 0 }, /* 'o' */ | |
771 | { NULL, 0 }, /* 'p' */ | |
772 | { NULL, 0 }, /* 'q' */ | |
773 | { NULL, 0 }, /* 'r' */ | |
774 | { "stab", 4 } /* 's' */ | |
775 | }; | |
776 | ||
777 | if (name [0] == '.') | |
778 | { | |
779 | int i = name [1] - 'd'; | |
780 | if (i >= 0 | |
781 | && i < (int) ARRAY_SIZE (debug_sections) | |
782 | && debug_sections [i].name != NULL | |
783 | && strncmp (&name [1], debug_sections [i].name, | |
784 | debug_sections [i].len) == 0) | |
785 | flags |= SEC_DEBUGGING; | |
786 | } | |
787 | } | |
252b5132 RH |
788 | |
789 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
790 | only link a single copy of the section. This is used to support | |
791 | g++. g++ will emit each template expansion in its own section. | |
792 | The symbols will be defined as weak, so that multiple definitions | |
793 | are permitted. The GNU linker extension is to actually discard | |
794 | all but one of the sections. */ | |
b885599b AM |
795 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
796 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
797 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
798 | ||
fa152c49 JW |
799 | bed = get_elf_backend_data (abfd); |
800 | if (bed->elf_backend_section_flags) | |
801 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 802 | return FALSE; |
fa152c49 | 803 | |
252b5132 | 804 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 805 | return FALSE; |
252b5132 RH |
806 | |
807 | if ((flags & SEC_ALLOC) != 0) | |
808 | { | |
809 | Elf_Internal_Phdr *phdr; | |
810 | unsigned int i; | |
811 | ||
812 | /* Look through the phdrs to see if we need to adjust the lma. | |
813 | If all the p_paddr fields are zero, we ignore them, since | |
814 | some ELF linkers produce such output. */ | |
815 | phdr = elf_tdata (abfd)->phdr; | |
816 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
817 | { | |
818 | if (phdr->p_paddr != 0) | |
819 | break; | |
820 | } | |
821 | if (i < elf_elfheader (abfd)->e_phnum) | |
822 | { | |
823 | phdr = elf_tdata (abfd)->phdr; | |
824 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
825 | { | |
e0e8c97f NC |
826 | /* This section is part of this segment if its file |
827 | offset plus size lies within the segment's memory | |
828 | span and, if the section is loaded, the extent of the | |
47d9a591 | 829 | loaded data lies within the extent of the segment. |
bf36db18 NC |
830 | |
831 | Note - we used to check the p_paddr field as well, and | |
832 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 833 | though, as a perfectly valid initialised segment can |
bf36db18 | 834 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 835 | place special significance on the address 0 and |
bf36db18 NC |
836 | executables need to be able to have a segment which |
837 | covers this address. */ | |
252b5132 | 838 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
839 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
840 | && (hdr->sh_offset + hdr->sh_size | |
841 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 842 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
843 | || (hdr->sh_offset + hdr->sh_size |
844 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 845 | { |
dba143ef | 846 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
847 | newsect->lma = (phdr->p_paddr |
848 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
849 | else |
850 | /* We used to use the same adjustment for SEC_LOAD | |
851 | sections, but that doesn't work if the segment | |
852 | is packed with code from multiple VMAs. | |
853 | Instead we calculate the section LMA based on | |
854 | the segment LMA. It is assumed that the | |
855 | segment will contain sections with contiguous | |
856 | LMAs, even if the VMAs are not. */ | |
857 | newsect->lma = (phdr->p_paddr | |
858 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
859 | |
860 | /* With contiguous segments, we can't tell from file | |
861 | offsets whether a section with zero size should | |
862 | be placed at the end of one segment or the | |
863 | beginning of the next. Decide based on vaddr. */ | |
864 | if (hdr->sh_addr >= phdr->p_vaddr | |
865 | && (hdr->sh_addr + hdr->sh_size | |
866 | <= phdr->p_vaddr + phdr->p_memsz)) | |
867 | break; | |
252b5132 RH |
868 | } |
869 | } | |
870 | } | |
871 | } | |
872 | ||
b34976b6 | 873 | return TRUE; |
252b5132 RH |
874 | } |
875 | ||
876 | /* | |
877 | INTERNAL_FUNCTION | |
878 | bfd_elf_find_section | |
879 | ||
880 | SYNOPSIS | |
881 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
882 | ||
883 | DESCRIPTION | |
884 | Helper functions for GDB to locate the string tables. | |
885 | Since BFD hides string tables from callers, GDB needs to use an | |
886 | internal hook to find them. Sun's .stabstr, in particular, | |
887 | isn't even pointed to by the .stab section, so ordinary | |
888 | mechanisms wouldn't work to find it, even if we had some. | |
889 | */ | |
890 | ||
891 | struct elf_internal_shdr * | |
217aa764 | 892 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
893 | { |
894 | Elf_Internal_Shdr **i_shdrp; | |
895 | char *shstrtab; | |
896 | unsigned int max; | |
897 | unsigned int i; | |
898 | ||
899 | i_shdrp = elf_elfsections (abfd); | |
900 | if (i_shdrp != NULL) | |
901 | { | |
9ad5cbcf AM |
902 | shstrtab = bfd_elf_get_str_section (abfd, |
903 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
904 | if (shstrtab != NULL) |
905 | { | |
9ad5cbcf | 906 | max = elf_numsections (abfd); |
252b5132 RH |
907 | for (i = 1; i < max; i++) |
908 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
909 | return i_shdrp[i]; | |
910 | } | |
911 | } | |
912 | return 0; | |
913 | } | |
914 | ||
915 | const char *const bfd_elf_section_type_names[] = { | |
916 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
917 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
918 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
919 | }; | |
920 | ||
1049f94e | 921 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
922 | output, and the reloc is against an external symbol, and nothing |
923 | has given us any additional addend, the resulting reloc will also | |
924 | be against the same symbol. In such a case, we don't want to | |
925 | change anything about the way the reloc is handled, since it will | |
926 | all be done at final link time. Rather than put special case code | |
927 | into bfd_perform_relocation, all the reloc types use this howto | |
928 | function. It just short circuits the reloc if producing | |
1049f94e | 929 | relocatable output against an external symbol. */ |
252b5132 | 930 | |
252b5132 | 931 | bfd_reloc_status_type |
217aa764 AM |
932 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
933 | arelent *reloc_entry, | |
934 | asymbol *symbol, | |
935 | void *data ATTRIBUTE_UNUSED, | |
936 | asection *input_section, | |
937 | bfd *output_bfd, | |
938 | char **error_message ATTRIBUTE_UNUSED) | |
939 | { | |
940 | if (output_bfd != NULL | |
252b5132 RH |
941 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
942 | && (! reloc_entry->howto->partial_inplace | |
943 | || reloc_entry->addend == 0)) | |
944 | { | |
945 | reloc_entry->address += input_section->output_offset; | |
946 | return bfd_reloc_ok; | |
947 | } | |
948 | ||
949 | return bfd_reloc_continue; | |
950 | } | |
951 | \f | |
d3c456e9 JJ |
952 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
953 | ||
954 | static void | |
217aa764 AM |
955 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
956 | asection *sec) | |
d3c456e9 | 957 | { |
68bfbfcc AM |
958 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
959 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
960 | } |
961 | ||
8550eb6e JJ |
962 | /* Finish SHF_MERGE section merging. */ |
963 | ||
b34976b6 | 964 | bfd_boolean |
217aa764 | 965 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 966 | { |
57ceae94 AM |
967 | bfd *ibfd; |
968 | asection *sec; | |
969 | ||
0eddce27 | 970 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 971 | return FALSE; |
57ceae94 AM |
972 | |
973 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
974 | if ((ibfd->flags & DYNAMIC) == 0) | |
975 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
976 | if ((sec->flags & SEC_MERGE) != 0 | |
977 | && !bfd_is_abs_section (sec->output_section)) | |
978 | { | |
979 | struct bfd_elf_section_data *secdata; | |
980 | ||
981 | secdata = elf_section_data (sec); | |
982 | if (! _bfd_add_merge_section (abfd, | |
983 | &elf_hash_table (info)->merge_info, | |
984 | sec, &secdata->sec_info)) | |
985 | return FALSE; | |
986 | else if (secdata->sec_info) | |
987 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
988 | } | |
989 | ||
990 | if (elf_hash_table (info)->merge_info != NULL) | |
991 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 992 | merge_sections_remove_hook); |
b34976b6 | 993 | return TRUE; |
8550eb6e | 994 | } |
2d653fc7 AM |
995 | |
996 | void | |
217aa764 | 997 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
998 | { |
999 | sec->output_section = bfd_abs_section_ptr; | |
1000 | sec->output_offset = sec->vma; | |
0eddce27 | 1001 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1002 | return; |
1003 | ||
68bfbfcc | 1004 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1005 | } |
8550eb6e | 1006 | \f |
0ac4564e L |
1007 | /* Copy the program header and other data from one object module to |
1008 | another. */ | |
252b5132 | 1009 | |
b34976b6 | 1010 | bfd_boolean |
217aa764 | 1011 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1012 | { |
1013 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1014 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1015 | return TRUE; |
2d502050 L |
1016 | |
1017 | BFD_ASSERT (!elf_flags_init (obfd) | |
1018 | || (elf_elfheader (obfd)->e_flags | |
1019 | == elf_elfheader (ibfd)->e_flags)); | |
1020 | ||
0ac4564e | 1021 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1022 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1023 | elf_flags_init (obfd) = TRUE; |
1024 | return TRUE; | |
2d502050 L |
1025 | } |
1026 | ||
f0b79d91 L |
1027 | /* Print out the program headers. */ |
1028 | ||
b34976b6 | 1029 | bfd_boolean |
217aa764 | 1030 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1031 | { |
217aa764 | 1032 | FILE *f = farg; |
252b5132 RH |
1033 | Elf_Internal_Phdr *p; |
1034 | asection *s; | |
1035 | bfd_byte *dynbuf = NULL; | |
1036 | ||
1037 | p = elf_tdata (abfd)->phdr; | |
1038 | if (p != NULL) | |
1039 | { | |
1040 | unsigned int i, c; | |
1041 | ||
1042 | fprintf (f, _("\nProgram Header:\n")); | |
1043 | c = elf_elfheader (abfd)->e_phnum; | |
1044 | for (i = 0; i < c; i++, p++) | |
1045 | { | |
dc810e39 | 1046 | const char *pt; |
252b5132 RH |
1047 | char buf[20]; |
1048 | ||
1049 | switch (p->p_type) | |
1050 | { | |
dc810e39 AM |
1051 | case PT_NULL: pt = "NULL"; break; |
1052 | case PT_LOAD: pt = "LOAD"; break; | |
1053 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1054 | case PT_INTERP: pt = "INTERP"; break; | |
1055 | case PT_NOTE: pt = "NOTE"; break; | |
1056 | case PT_SHLIB: pt = "SHLIB"; break; | |
1057 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 1058 | case PT_TLS: pt = "TLS"; break; |
65765700 | 1059 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 1060 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 1061 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 1062 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 1063 | } |
dc810e39 | 1064 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1065 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1066 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1067 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1068 | fprintf (f, " paddr 0x"); |
60b89a18 | 1069 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1070 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1071 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1072 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1073 | fprintf (f, " memsz 0x"); |
60b89a18 | 1074 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1075 | fprintf (f, " flags %c%c%c", |
1076 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1077 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1078 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1079 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1080 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1081 | fprintf (f, "\n"); |
1082 | } | |
1083 | } | |
1084 | ||
1085 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1086 | if (s != NULL) | |
1087 | { | |
1088 | int elfsec; | |
dc810e39 | 1089 | unsigned long shlink; |
252b5132 RH |
1090 | bfd_byte *extdyn, *extdynend; |
1091 | size_t extdynsize; | |
217aa764 | 1092 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1093 | |
1094 | fprintf (f, _("\nDynamic Section:\n")); | |
1095 | ||
eea6121a | 1096 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1097 | goto error_return; |
1098 | ||
1099 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1100 | if (elfsec == -1) | |
1101 | goto error_return; | |
dc810e39 | 1102 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1103 | |
1104 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1105 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1106 | ||
1107 | extdyn = dynbuf; | |
eea6121a | 1108 | extdynend = extdyn + s->size; |
252b5132 RH |
1109 | for (; extdyn < extdynend; extdyn += extdynsize) |
1110 | { | |
1111 | Elf_Internal_Dyn dyn; | |
1112 | const char *name; | |
1113 | char ab[20]; | |
b34976b6 | 1114 | bfd_boolean stringp; |
252b5132 | 1115 | |
217aa764 | 1116 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1117 | |
1118 | if (dyn.d_tag == DT_NULL) | |
1119 | break; | |
1120 | ||
b34976b6 | 1121 | stringp = FALSE; |
252b5132 RH |
1122 | switch (dyn.d_tag) |
1123 | { | |
1124 | default: | |
1125 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1126 | name = ab; | |
1127 | break; | |
1128 | ||
b34976b6 | 1129 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1130 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1131 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1132 | case DT_HASH: name = "HASH"; break; | |
1133 | case DT_STRTAB: name = "STRTAB"; break; | |
1134 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1135 | case DT_RELA: name = "RELA"; break; | |
1136 | case DT_RELASZ: name = "RELASZ"; break; | |
1137 | case DT_RELAENT: name = "RELAENT"; break; | |
1138 | case DT_STRSZ: name = "STRSZ"; break; | |
1139 | case DT_SYMENT: name = "SYMENT"; break; | |
1140 | case DT_INIT: name = "INIT"; break; | |
1141 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1142 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1143 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1144 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1145 | case DT_REL: name = "REL"; break; | |
1146 | case DT_RELSZ: name = "RELSZ"; break; | |
1147 | case DT_RELENT: name = "RELENT"; break; | |
1148 | case DT_PLTREL: name = "PLTREL"; break; | |
1149 | case DT_DEBUG: name = "DEBUG"; break; | |
1150 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1151 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1152 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1153 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1154 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1155 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1156 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1157 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1158 | case DT_FLAGS: name = "FLAGS"; break; |
1159 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1160 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1161 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1162 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1163 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1164 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1165 | case DT_FEATURE: name = "FEATURE"; break; | |
1166 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1167 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1168 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1169 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1170 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1171 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1172 | case DT_PLTPAD: name = "PLTPAD"; break; |
1173 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1174 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1175 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1176 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1177 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1178 | case DT_VERSYM: name = "VERSYM"; break; |
1179 | case DT_VERDEF: name = "VERDEF"; break; | |
1180 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1181 | case DT_VERNEED: name = "VERNEED"; break; | |
1182 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1183 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1184 | case DT_USED: name = "USED"; break; |
b34976b6 | 1185 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1186 | } |
1187 | ||
1188 | fprintf (f, " %-11s ", name); | |
1189 | if (! stringp) | |
1190 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1191 | else | |
1192 | { | |
1193 | const char *string; | |
dc810e39 | 1194 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1195 | |
dc810e39 | 1196 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1197 | if (string == NULL) |
1198 | goto error_return; | |
1199 | fprintf (f, "%s", string); | |
1200 | } | |
1201 | fprintf (f, "\n"); | |
1202 | } | |
1203 | ||
1204 | free (dynbuf); | |
1205 | dynbuf = NULL; | |
1206 | } | |
1207 | ||
1208 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1209 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1210 | { | |
fc0e6df6 | 1211 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1212 | return FALSE; |
252b5132 RH |
1213 | } |
1214 | ||
1215 | if (elf_dynverdef (abfd) != 0) | |
1216 | { | |
1217 | Elf_Internal_Verdef *t; | |
1218 | ||
1219 | fprintf (f, _("\nVersion definitions:\n")); | |
1220 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1221 | { | |
1222 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1223 | t->vd_flags, t->vd_hash, |
1224 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1225 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1226 | { |
1227 | Elf_Internal_Verdaux *a; | |
1228 | ||
1229 | fprintf (f, "\t"); | |
1230 | for (a = t->vd_auxptr->vda_nextptr; | |
1231 | a != NULL; | |
1232 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1233 | fprintf (f, "%s ", |
1234 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1235 | fprintf (f, "\n"); |
1236 | } | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | if (elf_dynverref (abfd) != 0) | |
1241 | { | |
1242 | Elf_Internal_Verneed *t; | |
1243 | ||
1244 | fprintf (f, _("\nVersion References:\n")); | |
1245 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1246 | { | |
1247 | Elf_Internal_Vernaux *a; | |
1248 | ||
d0fb9a8d JJ |
1249 | fprintf (f, _(" required from %s:\n"), |
1250 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1251 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1252 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1253 | a->vna_flags, a->vna_other, |
1254 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1255 | } |
1256 | } | |
1257 | ||
b34976b6 | 1258 | return TRUE; |
252b5132 RH |
1259 | |
1260 | error_return: | |
1261 | if (dynbuf != NULL) | |
1262 | free (dynbuf); | |
b34976b6 | 1263 | return FALSE; |
252b5132 RH |
1264 | } |
1265 | ||
1266 | /* Display ELF-specific fields of a symbol. */ | |
1267 | ||
1268 | void | |
217aa764 AM |
1269 | bfd_elf_print_symbol (bfd *abfd, |
1270 | void *filep, | |
1271 | asymbol *symbol, | |
1272 | bfd_print_symbol_type how) | |
252b5132 | 1273 | { |
217aa764 | 1274 | FILE *file = filep; |
252b5132 RH |
1275 | switch (how) |
1276 | { | |
1277 | case bfd_print_symbol_name: | |
1278 | fprintf (file, "%s", symbol->name); | |
1279 | break; | |
1280 | case bfd_print_symbol_more: | |
1281 | fprintf (file, "elf "); | |
60b89a18 | 1282 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1283 | fprintf (file, " %lx", (long) symbol->flags); |
1284 | break; | |
1285 | case bfd_print_symbol_all: | |
1286 | { | |
4e8a9624 AM |
1287 | const char *section_name; |
1288 | const char *name = NULL; | |
9c5bfbb7 | 1289 | const struct elf_backend_data *bed; |
7a13edea | 1290 | unsigned char st_other; |
dbb410c3 | 1291 | bfd_vma val; |
c044fabd | 1292 | |
252b5132 | 1293 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1294 | |
1295 | bed = get_elf_backend_data (abfd); | |
1296 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1297 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1298 | |
1299 | if (name == NULL) | |
1300 | { | |
7ee38065 | 1301 | name = symbol->name; |
217aa764 | 1302 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1303 | } |
1304 | ||
252b5132 RH |
1305 | fprintf (file, " %s\t", section_name); |
1306 | /* Print the "other" value for a symbol. For common symbols, | |
1307 | we've already printed the size; now print the alignment. | |
1308 | For other symbols, we have no specified alignment, and | |
1309 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1310 | if (bfd_is_com_section (symbol->section)) |
1311 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1312 | else | |
1313 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1314 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1315 | |
1316 | /* If we have version information, print it. */ | |
1317 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1318 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1319 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1320 | { | |
1321 | unsigned int vernum; | |
1322 | const char *version_string; | |
1323 | ||
1324 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1325 | ||
1326 | if (vernum == 0) | |
1327 | version_string = ""; | |
1328 | else if (vernum == 1) | |
1329 | version_string = "Base"; | |
1330 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1331 | version_string = | |
1332 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1333 | else | |
1334 | { | |
1335 | Elf_Internal_Verneed *t; | |
1336 | ||
1337 | version_string = ""; | |
1338 | for (t = elf_tdata (abfd)->verref; | |
1339 | t != NULL; | |
1340 | t = t->vn_nextref) | |
1341 | { | |
1342 | Elf_Internal_Vernaux *a; | |
1343 | ||
1344 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1345 | { | |
1346 | if (a->vna_other == vernum) | |
1347 | { | |
1348 | version_string = a->vna_nodename; | |
1349 | break; | |
1350 | } | |
1351 | } | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1356 | fprintf (file, " %-11s", version_string); | |
1357 | else | |
1358 | { | |
1359 | int i; | |
1360 | ||
1361 | fprintf (file, " (%s)", version_string); | |
1362 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1363 | putc (' ', file); | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1368 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1369 | |
7a13edea NC |
1370 | switch (st_other) |
1371 | { | |
1372 | case 0: break; | |
1373 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1374 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1375 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1376 | default: | |
1377 | /* Some other non-defined flags are also present, so print | |
1378 | everything hex. */ | |
1379 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1380 | } | |
252b5132 | 1381 | |
587ff49e | 1382 | fprintf (file, " %s", name); |
252b5132 RH |
1383 | } |
1384 | break; | |
1385 | } | |
1386 | } | |
1387 | \f | |
1388 | /* Create an entry in an ELF linker hash table. */ | |
1389 | ||
1390 | struct bfd_hash_entry * | |
217aa764 AM |
1391 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1392 | struct bfd_hash_table *table, | |
1393 | const char *string) | |
252b5132 | 1394 | { |
252b5132 RH |
1395 | /* Allocate the structure if it has not already been allocated by a |
1396 | subclass. */ | |
51b64d56 AM |
1397 | if (entry == NULL) |
1398 | { | |
1399 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1400 | if (entry == NULL) | |
1401 | return entry; | |
1402 | } | |
252b5132 RH |
1403 | |
1404 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1405 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1406 | if (entry != NULL) | |
252b5132 | 1407 | { |
51b64d56 AM |
1408 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1409 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1410 | ||
252b5132 RH |
1411 | /* Set local fields. */ |
1412 | ret->indx = -1; | |
252b5132 | 1413 | ret->dynindx = -1; |
a6aa5195 AM |
1414 | ret->got = htab->init_got_refcount; |
1415 | ret->plt = htab->init_plt_refcount; | |
f6e332e6 AM |
1416 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) |
1417 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1418 | /* Assume that we have been called by a non-ELF symbol reader. |
1419 | This flag is then reset by the code which reads an ELF input | |
1420 | file. This ensures that a symbol created by a non-ELF symbol | |
1421 | reader will have the flag set correctly. */ | |
f5385ebf | 1422 | ret->non_elf = 1; |
252b5132 RH |
1423 | } |
1424 | ||
51b64d56 | 1425 | return entry; |
252b5132 RH |
1426 | } |
1427 | ||
2920b85c | 1428 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1429 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1430 | |
c61b8717 | 1431 | void |
9c5bfbb7 | 1432 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1433 | struct elf_link_hash_entry *dir, |
1434 | struct elf_link_hash_entry *ind) | |
2920b85c | 1435 | { |
3c3e9281 | 1436 | bfd_signed_vma tmp; |
b48fa14c | 1437 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1438 | |
2920b85c RH |
1439 | /* Copy down any references that we may have already seen to the |
1440 | symbol which just became indirect. */ | |
1441 | ||
f5385ebf AM |
1442 | dir->ref_dynamic |= ind->ref_dynamic; |
1443 | dir->ref_regular |= ind->ref_regular; | |
1444 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1445 | dir->non_got_ref |= ind->non_got_ref; | |
1446 | dir->needs_plt |= ind->needs_plt; | |
1447 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1448 | |
1e370bd2 | 1449 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1450 | return; |
1451 | ||
51b64d56 | 1452 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1453 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1454 | tmp = dir->got.refcount; |
b48fa14c | 1455 | if (tmp < lowest_valid) |
2920b85c | 1456 | { |
51b64d56 | 1457 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1458 | ind->got.refcount = tmp; |
2920b85c | 1459 | } |
3c3e9281 | 1460 | else |
b48fa14c | 1461 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1462 | |
3c3e9281 | 1463 | tmp = dir->plt.refcount; |
b48fa14c | 1464 | if (tmp < lowest_valid) |
2920b85c | 1465 | { |
51b64d56 | 1466 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1467 | ind->plt.refcount = tmp; |
2920b85c | 1468 | } |
3c3e9281 | 1469 | else |
b48fa14c | 1470 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1471 | |
1472 | if (dir->dynindx == -1) | |
1473 | { | |
1474 | dir->dynindx = ind->dynindx; | |
1475 | dir->dynstr_index = ind->dynstr_index; | |
1476 | ind->dynindx = -1; | |
1477 | ind->dynstr_index = 0; | |
1478 | } | |
3c3e9281 AM |
1479 | else |
1480 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1481 | } |
1482 | ||
c61b8717 | 1483 | void |
217aa764 AM |
1484 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1485 | struct elf_link_hash_entry *h, | |
1486 | bfd_boolean force_local) | |
2920b85c | 1487 | { |
a6aa5195 | 1488 | h->plt = elf_hash_table (info)->init_plt_offset; |
f5385ebf | 1489 | h->needs_plt = 0; |
e5094212 AM |
1490 | if (force_local) |
1491 | { | |
f5385ebf | 1492 | h->forced_local = 1; |
e5094212 AM |
1493 | if (h->dynindx != -1) |
1494 | { | |
1495 | h->dynindx = -1; | |
1496 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1497 | h->dynstr_index); | |
1498 | } | |
1499 | } | |
2920b85c RH |
1500 | } |
1501 | ||
252b5132 RH |
1502 | /* Initialize an ELF linker hash table. */ |
1503 | ||
b34976b6 | 1504 | bfd_boolean |
217aa764 AM |
1505 | _bfd_elf_link_hash_table_init |
1506 | (struct elf_link_hash_table *table, | |
1507 | bfd *abfd, | |
1508 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1509 | struct bfd_hash_table *, | |
1510 | const char *)) | |
252b5132 | 1511 | { |
b34976b6 | 1512 | bfd_boolean ret; |
a6aa5195 | 1513 | int can_refcount = get_elf_backend_data (abfd)->can_refcount; |
8ea2e4bd | 1514 | |
b34976b6 | 1515 | table->dynamic_sections_created = FALSE; |
252b5132 | 1516 | table->dynobj = NULL; |
a6aa5195 AM |
1517 | table->init_got_refcount.refcount = can_refcount - 1; |
1518 | table->init_plt_refcount.refcount = can_refcount - 1; | |
1519 | table->init_got_offset.offset = -(bfd_vma) 1; | |
1520 | table->init_plt_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1521 | /* The first dynamic symbol is a dummy. */ |
1522 | table->dynsymcount = 1; | |
1523 | table->dynstr = NULL; | |
1524 | table->bucketcount = 0; | |
1525 | table->needed = NULL; | |
1526 | table->hgot = NULL; | |
f5fa8ca2 | 1527 | table->merge_info = NULL; |
3722b82f | 1528 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1529 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1530 | table->dynlocal = NULL; |
73722af0 | 1531 | table->runpath = NULL; |
e1918d23 AM |
1532 | table->tls_sec = NULL; |
1533 | table->tls_size = 0; | |
73722af0 | 1534 | table->loaded = NULL; |
67687978 | 1535 | table->is_relocatable_executable = FALSE; |
73722af0 AM |
1536 | |
1537 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1538 | table->root.type = bfd_link_elf_hash_table; |
1539 | ||
1540 | return ret; | |
252b5132 RH |
1541 | } |
1542 | ||
1543 | /* Create an ELF linker hash table. */ | |
1544 | ||
1545 | struct bfd_link_hash_table * | |
217aa764 | 1546 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1547 | { |
1548 | struct elf_link_hash_table *ret; | |
dc810e39 | 1549 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1550 | |
217aa764 AM |
1551 | ret = bfd_malloc (amt); |
1552 | if (ret == NULL) | |
252b5132 RH |
1553 | return NULL; |
1554 | ||
1555 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1556 | { | |
e2d34d7d | 1557 | free (ret); |
252b5132 RH |
1558 | return NULL; |
1559 | } | |
1560 | ||
1561 | return &ret->root; | |
1562 | } | |
1563 | ||
1564 | /* This is a hook for the ELF emulation code in the generic linker to | |
1565 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1566 | entry for a dynamic object. */ |
252b5132 RH |
1567 | |
1568 | void | |
217aa764 | 1569 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1570 | { |
1571 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1572 | && bfd_get_format (abfd) == bfd_object) | |
1573 | elf_dt_name (abfd) = name; | |
1574 | } | |
1575 | ||
e56f61be L |
1576 | int |
1577 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1578 | { | |
1579 | int lib_class; | |
1580 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1581 | && bfd_get_format (abfd) == bfd_object) | |
1582 | lib_class = elf_dyn_lib_class (abfd); | |
1583 | else | |
1584 | lib_class = 0; | |
1585 | return lib_class; | |
1586 | } | |
1587 | ||
74816898 | 1588 | void |
4a43e768 | 1589 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1590 | { |
1591 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1592 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1593 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1594 | } |
1595 | ||
252b5132 RH |
1596 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1597 | the linker ELF emulation code. */ | |
1598 | ||
1599 | struct bfd_link_needed_list * | |
217aa764 AM |
1600 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1601 | struct bfd_link_info *info) | |
252b5132 | 1602 | { |
0eddce27 | 1603 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1604 | return NULL; |
1605 | return elf_hash_table (info)->needed; | |
1606 | } | |
1607 | ||
a963dc6a L |
1608 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1609 | hook for the linker ELF emulation code. */ | |
1610 | ||
1611 | struct bfd_link_needed_list * | |
217aa764 AM |
1612 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1613 | struct bfd_link_info *info) | |
a963dc6a | 1614 | { |
0eddce27 | 1615 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1616 | return NULL; |
1617 | return elf_hash_table (info)->runpath; | |
1618 | } | |
1619 | ||
252b5132 RH |
1620 | /* Get the name actually used for a dynamic object for a link. This |
1621 | is the SONAME entry if there is one. Otherwise, it is the string | |
1622 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1623 | ||
1624 | const char * | |
217aa764 | 1625 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1626 | { |
1627 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1628 | && bfd_get_format (abfd) == bfd_object) | |
1629 | return elf_dt_name (abfd); | |
1630 | return NULL; | |
1631 | } | |
1632 | ||
1633 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1634 | the ELF linker emulation code. */ | |
1635 | ||
b34976b6 | 1636 | bfd_boolean |
217aa764 AM |
1637 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1638 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1639 | { |
1640 | asection *s; | |
1641 | bfd_byte *dynbuf = NULL; | |
1642 | int elfsec; | |
dc810e39 | 1643 | unsigned long shlink; |
252b5132 RH |
1644 | bfd_byte *extdyn, *extdynend; |
1645 | size_t extdynsize; | |
217aa764 | 1646 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1647 | |
1648 | *pneeded = NULL; | |
1649 | ||
1650 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1651 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1652 | return TRUE; |
252b5132 RH |
1653 | |
1654 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1655 | if (s == NULL || s->size == 0) |
b34976b6 | 1656 | return TRUE; |
252b5132 | 1657 | |
eea6121a | 1658 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1659 | goto error_return; |
1660 | ||
1661 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1662 | if (elfsec == -1) | |
1663 | goto error_return; | |
1664 | ||
dc810e39 | 1665 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1666 | |
1667 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1668 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1669 | ||
1670 | extdyn = dynbuf; | |
eea6121a | 1671 | extdynend = extdyn + s->size; |
252b5132 RH |
1672 | for (; extdyn < extdynend; extdyn += extdynsize) |
1673 | { | |
1674 | Elf_Internal_Dyn dyn; | |
1675 | ||
217aa764 | 1676 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1677 | |
1678 | if (dyn.d_tag == DT_NULL) | |
1679 | break; | |
1680 | ||
1681 | if (dyn.d_tag == DT_NEEDED) | |
1682 | { | |
1683 | const char *string; | |
1684 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1685 | unsigned int tagv = dyn.d_un.d_val; |
1686 | bfd_size_type amt; | |
252b5132 | 1687 | |
dc810e39 | 1688 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1689 | if (string == NULL) |
1690 | goto error_return; | |
1691 | ||
dc810e39 | 1692 | amt = sizeof *l; |
217aa764 | 1693 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1694 | if (l == NULL) |
1695 | goto error_return; | |
1696 | ||
1697 | l->by = abfd; | |
1698 | l->name = string; | |
1699 | l->next = *pneeded; | |
1700 | *pneeded = l; | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | free (dynbuf); | |
1705 | ||
b34976b6 | 1706 | return TRUE; |
252b5132 RH |
1707 | |
1708 | error_return: | |
1709 | if (dynbuf != NULL) | |
1710 | free (dynbuf); | |
b34976b6 | 1711 | return FALSE; |
252b5132 RH |
1712 | } |
1713 | \f | |
1714 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1715 | ||
1716 | struct bfd_strtab_hash * | |
217aa764 | 1717 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1718 | { |
1719 | struct bfd_strtab_hash *ret; | |
1720 | ||
1721 | ret = _bfd_stringtab_init (); | |
1722 | if (ret != NULL) | |
1723 | { | |
1724 | bfd_size_type loc; | |
1725 | ||
b34976b6 | 1726 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1727 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1728 | if (loc == (bfd_size_type) -1) | |
1729 | { | |
1730 | _bfd_stringtab_free (ret); | |
1731 | ret = NULL; | |
1732 | } | |
1733 | } | |
1734 | return ret; | |
1735 | } | |
1736 | \f | |
1737 | /* ELF .o/exec file reading */ | |
1738 | ||
c044fabd | 1739 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1740 | |
b34976b6 | 1741 | bfd_boolean |
217aa764 | 1742 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1743 | { |
1744 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1745 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1746 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1747 | const char *name; |
252b5132 | 1748 | |
1b3a8575 AM |
1749 | name = bfd_elf_string_from_elf_section (abfd, |
1750 | elf_elfheader (abfd)->e_shstrndx, | |
1751 | hdr->sh_name); | |
933d961a JJ |
1752 | if (name == NULL) |
1753 | return FALSE; | |
252b5132 RH |
1754 | |
1755 | switch (hdr->sh_type) | |
1756 | { | |
1757 | case SHT_NULL: | |
1758 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1759 | return TRUE; |
252b5132 RH |
1760 | |
1761 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1762 | case SHT_NOBITS: /* .bss section. */ |
1763 | case SHT_HASH: /* .hash section. */ | |
1764 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1765 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1766 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1767 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1768 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
6dc132d9 | 1769 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1770 | |
797fc050 | 1771 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1772 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1773 | return FALSE; |
8e0ed13f NC |
1774 | if (hdr->sh_link > elf_numsections (abfd) |
1775 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1776 | return FALSE; | |
797fc050 AM |
1777 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1778 | { | |
1779 | Elf_Internal_Shdr *dynsymhdr; | |
1780 | ||
1781 | /* The shared libraries distributed with hpux11 have a bogus | |
1782 | sh_link field for the ".dynamic" section. Find the | |
1783 | string table for the ".dynsym" section instead. */ | |
1784 | if (elf_dynsymtab (abfd) != 0) | |
1785 | { | |
1786 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1787 | hdr->sh_link = dynsymhdr->sh_link; | |
1788 | } | |
1789 | else | |
1790 | { | |
1791 | unsigned int i, num_sec; | |
1792 | ||
1793 | num_sec = elf_numsections (abfd); | |
1794 | for (i = 1; i < num_sec; i++) | |
1795 | { | |
1796 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1797 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1798 | { | |
1799 | hdr->sh_link = dynsymhdr->sh_link; | |
1800 | break; | |
1801 | } | |
1802 | } | |
1803 | } | |
1804 | } | |
1805 | break; | |
1806 | ||
252b5132 RH |
1807 | case SHT_SYMTAB: /* A symbol table */ |
1808 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1809 | return TRUE; |
252b5132 | 1810 | |
a50b2160 JJ |
1811 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1812 | return FALSE; | |
252b5132 RH |
1813 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1814 | elf_onesymtab (abfd) = shindex; | |
1815 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1816 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1817 | abfd->flags |= HAS_SYMS; | |
1818 | ||
1819 | /* Sometimes a shared object will map in the symbol table. If | |
1820 | SHF_ALLOC is set, and this is a shared object, then we also | |
1821 | treat this section as a BFD section. We can not base the | |
1822 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1823 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1824 | linker. */ |
1825 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1826 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1827 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1828 | shindex)) | |
b34976b6 | 1829 | return FALSE; |
252b5132 | 1830 | |
1b3a8575 AM |
1831 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1832 | can't read symbols without that section loaded as well. It | |
1833 | is most likely specified by the next section header. */ | |
1834 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1835 | { | |
1836 | unsigned int i, num_sec; | |
1837 | ||
1838 | num_sec = elf_numsections (abfd); | |
1839 | for (i = shindex + 1; i < num_sec; i++) | |
1840 | { | |
1841 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1842 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1843 | && hdr2->sh_link == shindex) | |
1844 | break; | |
1845 | } | |
1846 | if (i == num_sec) | |
1847 | for (i = 1; i < shindex; i++) | |
1848 | { | |
1849 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1850 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1851 | && hdr2->sh_link == shindex) | |
1852 | break; | |
1853 | } | |
1854 | if (i != shindex) | |
1855 | return bfd_section_from_shdr (abfd, i); | |
1856 | } | |
b34976b6 | 1857 | return TRUE; |
252b5132 RH |
1858 | |
1859 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1860 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1861 | return TRUE; |
252b5132 | 1862 | |
a50b2160 JJ |
1863 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1864 | return FALSE; | |
252b5132 RH |
1865 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1866 | elf_dynsymtab (abfd) = shindex; | |
1867 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1868 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1869 | abfd->flags |= HAS_SYMS; | |
1870 | ||
1871 | /* Besides being a symbol table, we also treat this as a regular | |
1872 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1873 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1874 | |
9ad5cbcf AM |
1875 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1876 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1877 | return TRUE; |
9ad5cbcf | 1878 | |
1b3a8575 | 1879 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1880 | elf_symtab_shndx (abfd) = shindex; |
1881 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1882 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1883 | return TRUE; |
9ad5cbcf | 1884 | |
252b5132 RH |
1885 | case SHT_STRTAB: /* A string table */ |
1886 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1887 | return TRUE; |
252b5132 RH |
1888 | if (ehdr->e_shstrndx == shindex) |
1889 | { | |
1890 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1891 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1892 | return TRUE; |
252b5132 | 1893 | } |
1b3a8575 AM |
1894 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1895 | { | |
1896 | symtab_strtab: | |
1897 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1898 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1899 | return TRUE; | |
1900 | } | |
1901 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1902 | { | |
1903 | dynsymtab_strtab: | |
1904 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1905 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1906 | elf_elfsections (abfd)[shindex] = hdr; | |
1907 | /* We also treat this as a regular section, so that objcopy | |
1908 | can handle it. */ | |
6dc132d9 L |
1909 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1910 | shindex); | |
1b3a8575 | 1911 | } |
252b5132 | 1912 | |
1b3a8575 AM |
1913 | /* If the string table isn't one of the above, then treat it as a |
1914 | regular section. We need to scan all the headers to be sure, | |
1915 | just in case this strtab section appeared before the above. */ | |
1916 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1917 | { | |
1918 | unsigned int i, num_sec; | |
252b5132 | 1919 | |
1b3a8575 AM |
1920 | num_sec = elf_numsections (abfd); |
1921 | for (i = 1; i < num_sec; i++) | |
1922 | { | |
1923 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1924 | if (hdr2->sh_link == shindex) | |
1925 | { | |
933d961a JJ |
1926 | /* Prevent endless recursion on broken objects. */ |
1927 | if (i == shindex) | |
1928 | return FALSE; | |
1b3a8575 AM |
1929 | if (! bfd_section_from_shdr (abfd, i)) |
1930 | return FALSE; | |
1931 | if (elf_onesymtab (abfd) == i) | |
1932 | goto symtab_strtab; | |
1933 | if (elf_dynsymtab (abfd) == i) | |
1934 | goto dynsymtab_strtab; | |
1935 | } | |
1936 | } | |
1937 | } | |
6dc132d9 | 1938 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1939 | |
1940 | case SHT_REL: | |
1941 | case SHT_RELA: | |
1942 | /* *These* do a lot of work -- but build no sections! */ | |
1943 | { | |
1944 | asection *target_sect; | |
1945 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1946 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1947 | |
aa2ca951 JJ |
1948 | if (hdr->sh_entsize |
1949 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1950 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1951 | return FALSE; | |
1952 | ||
03ae5f59 | 1953 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1954 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1955 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1956 | { |
1957 | ((*_bfd_error_handler) | |
d003868e AM |
1958 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1959 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1960 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1961 | shindex); | |
03ae5f59 ILT |
1962 | } |
1963 | ||
252b5132 RH |
1964 | /* For some incomprehensible reason Oracle distributes |
1965 | libraries for Solaris in which some of the objects have | |
1966 | bogus sh_link fields. It would be nice if we could just | |
1967 | reject them, but, unfortunately, some people need to use | |
1968 | them. We scan through the section headers; if we find only | |
1969 | one suitable symbol table, we clobber the sh_link to point | |
1970 | to it. I hope this doesn't break anything. */ | |
1971 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1972 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1973 | { | |
9ad5cbcf | 1974 | unsigned int scan; |
252b5132 RH |
1975 | int found; |
1976 | ||
1977 | found = 0; | |
9ad5cbcf | 1978 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1979 | { |
1980 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1981 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1982 | { | |
1983 | if (found != 0) | |
1984 | { | |
1985 | found = 0; | |
1986 | break; | |
1987 | } | |
1988 | found = scan; | |
1989 | } | |
1990 | } | |
1991 | if (found != 0) | |
1992 | hdr->sh_link = found; | |
1993 | } | |
1994 | ||
1995 | /* Get the symbol table. */ | |
1b3a8575 AM |
1996 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1997 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1998 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1999 | return FALSE; |
252b5132 RH |
2000 | |
2001 | /* If this reloc section does not use the main symbol table we | |
2002 | don't treat it as a reloc section. BFD can't adequately | |
2003 | represent such a section, so at least for now, we don't | |
c044fabd | 2004 | try. We just present it as a normal section. We also |
60bcf0fa | 2005 | can't use it as a reloc section if it points to the null |
c044fabd | 2006 | section. */ |
60bcf0fa | 2007 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
6dc132d9 L |
2008 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2009 | shindex); | |
252b5132 | 2010 | |
a50b2160 JJ |
2011 | /* Prevent endless recursion on broken objects. */ |
2012 | if (elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
2013 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
2014 | return FALSE; | |
252b5132 | 2015 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) |
b34976b6 | 2016 | return FALSE; |
252b5132 RH |
2017 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2018 | if (target_sect == NULL) | |
b34976b6 | 2019 | return FALSE; |
252b5132 RH |
2020 | |
2021 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2022 | || target_sect->reloc_count == 0) | |
2023 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2024 | else | |
2025 | { | |
dc810e39 | 2026 | bfd_size_type amt; |
252b5132 | 2027 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2028 | amt = sizeof (*hdr2); |
217aa764 | 2029 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2030 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2031 | } | |
2032 | *hdr2 = *hdr; | |
2033 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2034 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2035 | target_sect->flags |= SEC_RELOC; |
2036 | target_sect->relocation = NULL; | |
2037 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2038 | /* In the section to which the relocations apply, mark whether |
2039 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2040 | if (hdr->sh_size != 0) |
68bfbfcc | 2041 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2042 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2043 | return TRUE; |
252b5132 RH |
2044 | } |
2045 | break; | |
2046 | ||
2047 | case SHT_GNU_verdef: | |
2048 | elf_dynverdef (abfd) = shindex; | |
2049 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2050 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2051 | break; |
2052 | ||
2053 | case SHT_GNU_versym: | |
a50b2160 JJ |
2054 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
2055 | return FALSE; | |
252b5132 RH |
2056 | elf_dynversym (abfd) = shindex; |
2057 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2058 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2059 | break; |
2060 | ||
2061 | case SHT_GNU_verneed: | |
2062 | elf_dynverref (abfd) = shindex; | |
2063 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2064 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2065 | break; |
2066 | ||
2067 | case SHT_SHLIB: | |
b34976b6 | 2068 | return TRUE; |
252b5132 | 2069 | |
dbb410c3 | 2070 | case SHT_GROUP: |
b885599b AM |
2071 | /* We need a BFD section for objcopy and relocatable linking, |
2072 | and it's handy to have the signature available as the section | |
2073 | name. */ | |
a50b2160 JJ |
2074 | if (hdr->sh_entsize != GRP_ENTRY_SIZE) |
2075 | return FALSE; | |
b885599b AM |
2076 | name = group_signature (abfd, hdr); |
2077 | if (name == NULL) | |
b34976b6 | 2078 | return FALSE; |
6dc132d9 | 2079 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2080 | return FALSE; |
dbb410c3 AM |
2081 | if (hdr->contents != NULL) |
2082 | { | |
2083 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2084 | unsigned int n_elt = hdr->sh_size / 4; | |
2085 | asection *s; | |
2086 | ||
b885599b AM |
2087 | if (idx->flags & GRP_COMDAT) |
2088 | hdr->bfd_section->flags | |
2089 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2090 | ||
45c5e9ed L |
2091 | /* We try to keep the same section order as it comes in. */ |
2092 | idx += n_elt; | |
dbb410c3 | 2093 | while (--n_elt != 0) |
45c5e9ed | 2094 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2095 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2096 | { |
945906ff | 2097 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2098 | break; |
2099 | } | |
2100 | } | |
2101 | break; | |
2102 | ||
252b5132 RH |
2103 | default: |
2104 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2105 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2106 | shindex); | |
252b5132 RH |
2107 | } |
2108 | ||
b34976b6 | 2109 | return TRUE; |
252b5132 RH |
2110 | } |
2111 | ||
ec338859 AM |
2112 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2113 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2114 | ||
2115 | asection * | |
217aa764 AM |
2116 | bfd_section_from_r_symndx (bfd *abfd, |
2117 | struct sym_sec_cache *cache, | |
2118 | asection *sec, | |
2119 | unsigned long r_symndx) | |
ec338859 | 2120 | { |
ec338859 | 2121 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2122 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2123 | Elf_External_Sym_Shndx eshndx; | |
2124 | Elf_Internal_Sym isym; | |
ec338859 AM |
2125 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2126 | ||
2127 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2128 | return cache->sec[ent]; | |
2129 | ||
2130 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2131 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2132 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2133 | return NULL; |
9ad5cbcf | 2134 | |
ec338859 AM |
2135 | if (cache->abfd != abfd) |
2136 | { | |
2137 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2138 | cache->abfd = abfd; | |
2139 | } | |
2140 | cache->indx[ent] = r_symndx; | |
2141 | cache->sec[ent] = sec; | |
50bc7936 AM |
2142 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2143 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2144 | { |
2145 | asection *s; | |
6cdc0ccc | 2146 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2147 | if (s != NULL) |
2148 | cache->sec[ent] = s; | |
2149 | } | |
2150 | return cache->sec[ent]; | |
2151 | } | |
2152 | ||
252b5132 RH |
2153 | /* Given an ELF section number, retrieve the corresponding BFD |
2154 | section. */ | |
2155 | ||
2156 | asection * | |
217aa764 | 2157 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2158 | { |
9ad5cbcf | 2159 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2160 | return NULL; |
2161 | return elf_elfsections (abfd)[index]->bfd_section; | |
2162 | } | |
2163 | ||
b35d266b | 2164 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 2165 | { |
7dcb9820 | 2166 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7f4d3958 L |
2167 | { NULL, 0, 0, 0, 0 } |
2168 | }; | |
2169 | ||
b35d266b | 2170 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 2171 | { |
7dcb9820 | 2172 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
7f4d3958 L |
2173 | { NULL, 0, 0, 0, 0 } |
2174 | }; | |
2175 | ||
b35d266b | 2176 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 2177 | { |
7dcb9820 AM |
2178 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2179 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2180 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
7dcb9820 AM |
2181 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, |
2182 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2183 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2184 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2185 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2186 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2187 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
7f4d3958 L |
2188 | { NULL, 0, 0, 0, 0 } |
2189 | }; | |
2190 | ||
b35d266b | 2191 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 L |
2192 | { |
2193 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2194 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2195 | { NULL, 0, 0, 0, 0 } | |
2196 | }; | |
2197 | ||
b35d266b | 2198 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 L |
2199 | { |
2200 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7dcb9820 | 2201 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2202 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, |
2203 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2204 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
7f4d3958 L |
2205 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2206 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
2207 | { NULL, 0, 0, 0, 0 } | |
2208 | }; | |
2209 | ||
b35d266b | 2210 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 L |
2211 | { |
2212 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2213 | { NULL, 0, 0, 0, 0 } | |
2214 | }; | |
2215 | ||
b35d266b | 2216 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 L |
2217 | { |
2218 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2219 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2220 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2221 | { NULL, 0, 0, 0, 0 } | |
2222 | }; | |
2223 | ||
b35d266b | 2224 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 L |
2225 | { |
2226 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2227 | { NULL, 0, 0, 0, 0 } | |
2228 | }; | |
2229 | ||
b35d266b | 2230 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2231 | { |
45c5e9ed | 2232 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 | 2233 | { ".note", 5, -1, SHT_NOTE, 0 }, |
7f4d3958 L |
2234 | { NULL, 0, 0, 0, 0 } |
2235 | }; | |
2236 | ||
b35d266b | 2237 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 L |
2238 | { |
2239 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2240 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2241 | { NULL, 0, 0, 0, 0 } | |
2242 | }; | |
2243 | ||
b35d266b | 2244 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 L |
2245 | { |
2246 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2247 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
7dcb9820 AM |
2248 | { ".rela", 5, -1, SHT_RELA, 0 }, |
2249 | { ".rel", 4, -1, SHT_REL, 0 }, | |
7f4d3958 L |
2250 | { NULL, 0, 0, 0, 0 } |
2251 | }; | |
2252 | ||
b35d266b | 2253 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 L |
2254 | { |
2255 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2256 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2257 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
7dcb9820 AM |
2258 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, |
2259 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2260 | }; |
2261 | ||
b35d266b | 2262 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 L |
2263 | { |
2264 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2265 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2266 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2267 | { NULL, 0, 0, 0, 0 } | |
2268 | }; | |
2269 | ||
b35d266b | 2270 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2271 | { |
7f4d3958 L |
2272 | special_sections_b, /* 'b' */ |
2273 | special_sections_c, /* 'b' */ | |
2274 | special_sections_d, /* 'd' */ | |
2275 | NULL, /* 'e' */ | |
2276 | special_sections_f, /* 'f' */ | |
2277 | special_sections_g, /* 'g' */ | |
2278 | special_sections_h, /* 'h' */ | |
2279 | special_sections_i, /* 'i' */ | |
2280 | NULL, /* 'j' */ | |
2281 | NULL, /* 'k' */ | |
2282 | special_sections_l, /* 'l' */ | |
2283 | NULL, /* 'm' */ | |
2284 | special_sections_n, /* 'n' */ | |
2285 | NULL, /* 'o' */ | |
2286 | special_sections_p, /* 'p' */ | |
2287 | NULL, /* 'q' */ | |
2288 | special_sections_r, /* 'r' */ | |
2289 | special_sections_s, /* 's' */ | |
2290 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2291 | }; |
2292 | ||
551b43fd AM |
2293 | const struct bfd_elf_special_section * |
2294 | _bfd_elf_get_special_section (const char *name, | |
2295 | const struct bfd_elf_special_section *spec, | |
2296 | unsigned int rela) | |
2f89ff8d L |
2297 | { |
2298 | int i; | |
7f4d3958 | 2299 | int len; |
7f4d3958 | 2300 | |
551b43fd | 2301 | len = strlen (name); |
7f4d3958 | 2302 | |
551b43fd | 2303 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2304 | { |
2305 | int suffix_len; | |
551b43fd | 2306 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2307 | |
2308 | if (len < prefix_len) | |
2309 | continue; | |
551b43fd | 2310 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2311 | continue; |
2312 | ||
551b43fd | 2313 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2314 | if (suffix_len <= 0) |
2315 | { | |
2316 | if (name[prefix_len] != 0) | |
2317 | { | |
2318 | if (suffix_len == 0) | |
2319 | continue; | |
2320 | if (name[prefix_len] != '.' | |
2321 | && (suffix_len == -2 | |
551b43fd | 2322 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2323 | continue; |
2324 | } | |
2325 | } | |
2326 | else | |
2327 | { | |
2328 | if (len < prefix_len + suffix_len) | |
2329 | continue; | |
2330 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2331 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2332 | suffix_len) != 0) |
2333 | continue; | |
2334 | } | |
551b43fd | 2335 | return &spec[i]; |
7dcb9820 | 2336 | } |
2f89ff8d L |
2337 | |
2338 | return NULL; | |
2339 | } | |
2340 | ||
7dcb9820 | 2341 | const struct bfd_elf_special_section * |
29ef7005 | 2342 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2343 | { |
551b43fd AM |
2344 | int i; |
2345 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2346 | const struct elf_backend_data *bed; |
2f89ff8d L |
2347 | |
2348 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2349 | if (sec->name == NULL) |
2350 | return NULL; | |
2f89ff8d | 2351 | |
29ef7005 L |
2352 | bed = get_elf_backend_data (abfd); |
2353 | spec = bed->special_sections; | |
2354 | if (spec) | |
2355 | { | |
2356 | spec = _bfd_elf_get_special_section (sec->name, | |
2357 | bed->special_sections, | |
2358 | sec->use_rela_p); | |
2359 | if (spec != NULL) | |
2360 | return spec; | |
2361 | } | |
2362 | ||
551b43fd AM |
2363 | if (sec->name[0] != '.') |
2364 | return NULL; | |
2f89ff8d | 2365 | |
551b43fd AM |
2366 | i = sec->name[1] - 'b'; |
2367 | if (i < 0 || i > 't' - 'b') | |
2368 | return NULL; | |
2369 | ||
2370 | spec = special_sections[i]; | |
2f89ff8d | 2371 | |
551b43fd AM |
2372 | if (spec == NULL) |
2373 | return NULL; | |
2374 | ||
2375 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2376 | } |
2377 | ||
b34976b6 | 2378 | bfd_boolean |
217aa764 | 2379 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2380 | { |
2381 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2382 | const struct elf_backend_data *bed; |
7dcb9820 | 2383 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2384 | |
f0abc2a1 AM |
2385 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2386 | if (sdata == NULL) | |
2387 | { | |
217aa764 | 2388 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2389 | if (sdata == NULL) |
2390 | return FALSE; | |
217aa764 | 2391 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2392 | } |
bf572ba0 | 2393 | |
551b43fd AM |
2394 | /* Indicate whether or not this section should use RELA relocations. */ |
2395 | bed = get_elf_backend_data (abfd); | |
2396 | sec->use_rela_p = bed->default_use_rela_p; | |
2397 | ||
3496cb2a L |
2398 | /* When we read a file, we don't need section type and flags unless |
2399 | it is a linker created section. They will be overridden in | |
2400 | _bfd_elf_make_section_from_shdr anyway. */ | |
2401 | if (abfd->direction != read_direction | |
2402 | || (sec->flags & SEC_LINKER_CREATED) != 0) | |
2f89ff8d | 2403 | { |
551b43fd | 2404 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2405 | if (ssect != NULL) |
2406 | { | |
2407 | elf_section_type (sec) = ssect->type; | |
2408 | elf_section_flags (sec) = ssect->attr; | |
2409 | } | |
2f89ff8d L |
2410 | } |
2411 | ||
b34976b6 | 2412 | return TRUE; |
252b5132 RH |
2413 | } |
2414 | ||
2415 | /* Create a new bfd section from an ELF program header. | |
2416 | ||
2417 | Since program segments have no names, we generate a synthetic name | |
2418 | of the form segment<NUM>, where NUM is generally the index in the | |
2419 | program header table. For segments that are split (see below) we | |
2420 | generate the names segment<NUM>a and segment<NUM>b. | |
2421 | ||
2422 | Note that some program segments may have a file size that is different than | |
2423 | (less than) the memory size. All this means is that at execution the | |
2424 | system must allocate the amount of memory specified by the memory size, | |
2425 | but only initialize it with the first "file size" bytes read from the | |
2426 | file. This would occur for example, with program segments consisting | |
2427 | of combined data+bss. | |
2428 | ||
2429 | To handle the above situation, this routine generates TWO bfd sections | |
2430 | for the single program segment. The first has the length specified by | |
2431 | the file size of the segment, and the second has the length specified | |
2432 | by the difference between the two sizes. In effect, the segment is split | |
2433 | into it's initialized and uninitialized parts. | |
2434 | ||
2435 | */ | |
2436 | ||
b34976b6 | 2437 | bfd_boolean |
217aa764 AM |
2438 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2439 | Elf_Internal_Phdr *hdr, | |
2440 | int index, | |
2441 | const char *typename) | |
252b5132 RH |
2442 | { |
2443 | asection *newsect; | |
2444 | char *name; | |
2445 | char namebuf[64]; | |
d4c88bbb | 2446 | size_t len; |
252b5132 RH |
2447 | int split; |
2448 | ||
2449 | split = ((hdr->p_memsz > 0) | |
2450 | && (hdr->p_filesz > 0) | |
2451 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2452 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2453 | len = strlen (namebuf) + 1; |
217aa764 | 2454 | name = bfd_alloc (abfd, len); |
252b5132 | 2455 | if (!name) |
b34976b6 | 2456 | return FALSE; |
d4c88bbb | 2457 | memcpy (name, namebuf, len); |
252b5132 RH |
2458 | newsect = bfd_make_section (abfd, name); |
2459 | if (newsect == NULL) | |
b34976b6 | 2460 | return FALSE; |
252b5132 RH |
2461 | newsect->vma = hdr->p_vaddr; |
2462 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2463 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2464 | newsect->filepos = hdr->p_offset; |
2465 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2466 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2467 | if (hdr->p_type == PT_LOAD) |
2468 | { | |
2469 | newsect->flags |= SEC_ALLOC; | |
2470 | newsect->flags |= SEC_LOAD; | |
2471 | if (hdr->p_flags & PF_X) | |
2472 | { | |
2473 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2474 | may be data. */ |
252b5132 RH |
2475 | newsect->flags |= SEC_CODE; |
2476 | } | |
2477 | } | |
2478 | if (!(hdr->p_flags & PF_W)) | |
2479 | { | |
2480 | newsect->flags |= SEC_READONLY; | |
2481 | } | |
2482 | ||
2483 | if (split) | |
2484 | { | |
27ac83bf | 2485 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2486 | len = strlen (namebuf) + 1; |
217aa764 | 2487 | name = bfd_alloc (abfd, len); |
252b5132 | 2488 | if (!name) |
b34976b6 | 2489 | return FALSE; |
d4c88bbb | 2490 | memcpy (name, namebuf, len); |
252b5132 RH |
2491 | newsect = bfd_make_section (abfd, name); |
2492 | if (newsect == NULL) | |
b34976b6 | 2493 | return FALSE; |
252b5132 RH |
2494 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2495 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2496 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2497 | if (hdr->p_type == PT_LOAD) |
2498 | { | |
2499 | newsect->flags |= SEC_ALLOC; | |
2500 | if (hdr->p_flags & PF_X) | |
2501 | newsect->flags |= SEC_CODE; | |
2502 | } | |
2503 | if (!(hdr->p_flags & PF_W)) | |
2504 | newsect->flags |= SEC_READONLY; | |
2505 | } | |
2506 | ||
b34976b6 | 2507 | return TRUE; |
252b5132 RH |
2508 | } |
2509 | ||
b34976b6 | 2510 | bfd_boolean |
217aa764 | 2511 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2512 | { |
9c5bfbb7 | 2513 | const struct elf_backend_data *bed; |
20cfcaae NC |
2514 | |
2515 | switch (hdr->p_type) | |
2516 | { | |
2517 | case PT_NULL: | |
2518 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2519 | ||
2520 | case PT_LOAD: | |
2521 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2522 | ||
2523 | case PT_DYNAMIC: | |
2524 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2525 | ||
2526 | case PT_INTERP: | |
2527 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2528 | ||
2529 | case PT_NOTE: | |
2530 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2531 | return FALSE; |
217aa764 | 2532 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2533 | return FALSE; |
2534 | return TRUE; | |
20cfcaae NC |
2535 | |
2536 | case PT_SHLIB: | |
2537 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2538 | ||
2539 | case PT_PHDR: | |
2540 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2541 | ||
811072d8 RM |
2542 | case PT_GNU_EH_FRAME: |
2543 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2544 | "eh_frame_hdr"); | |
2545 | ||
9ee5e499 JJ |
2546 | case PT_GNU_STACK: |
2547 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2548 | ||
8c37241b JJ |
2549 | case PT_GNU_RELRO: |
2550 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2551 | ||
20cfcaae | 2552 | default: |
8c1acd09 | 2553 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2554 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2555 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2556 | } |
2557 | } | |
2558 | ||
23bc299b | 2559 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2560 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2561 | relocations; otherwise, we use REL relocations. */ |
2562 | ||
b34976b6 | 2563 | bfd_boolean |
217aa764 AM |
2564 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2565 | Elf_Internal_Shdr *rel_hdr, | |
2566 | asection *asect, | |
2567 | bfd_boolean use_rela_p) | |
23bc299b MM |
2568 | { |
2569 | char *name; | |
9c5bfbb7 | 2570 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2571 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2572 | |
dc810e39 | 2573 | name = bfd_alloc (abfd, amt); |
23bc299b | 2574 | if (name == NULL) |
b34976b6 | 2575 | return FALSE; |
23bc299b MM |
2576 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2577 | rel_hdr->sh_name = | |
2b0f7ef9 | 2578 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2579 | FALSE); |
23bc299b | 2580 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2581 | return FALSE; |
23bc299b MM |
2582 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2583 | rel_hdr->sh_entsize = (use_rela_p | |
2584 | ? bed->s->sizeof_rela | |
2585 | : bed->s->sizeof_rel); | |
45d6a902 | 2586 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2587 | rel_hdr->sh_flags = 0; |
2588 | rel_hdr->sh_addr = 0; | |
2589 | rel_hdr->sh_size = 0; | |
2590 | rel_hdr->sh_offset = 0; | |
2591 | ||
b34976b6 | 2592 | return TRUE; |
23bc299b MM |
2593 | } |
2594 | ||
252b5132 RH |
2595 | /* Set up an ELF internal section header for a section. */ |
2596 | ||
252b5132 | 2597 | static void |
217aa764 | 2598 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2599 | { |
9c5bfbb7 | 2600 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2601 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2602 | Elf_Internal_Shdr *this_hdr; |
2603 | ||
2604 | if (*failedptr) | |
2605 | { | |
2606 | /* We already failed; just get out of the bfd_map_over_sections | |
2607 | loop. */ | |
2608 | return; | |
2609 | } | |
2610 | ||
2611 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2612 | ||
e57b5356 AM |
2613 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2614 | asect->name, FALSE); | |
2615 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2616 | { |
b34976b6 | 2617 | *failedptr = TRUE; |
252b5132 RH |
2618 | return; |
2619 | } | |
2620 | ||
a4d8e49b | 2621 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2622 | |
2623 | if ((asect->flags & SEC_ALLOC) != 0 | |
2624 | || asect->user_set_vma) | |
2625 | this_hdr->sh_addr = asect->vma; | |
2626 | else | |
2627 | this_hdr->sh_addr = 0; | |
2628 | ||
2629 | this_hdr->sh_offset = 0; | |
eea6121a | 2630 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2631 | this_hdr->sh_link = 0; |
2632 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2633 | /* The sh_entsize and sh_info fields may have been set already by | |
2634 | copy_private_section_data. */ | |
2635 | ||
2636 | this_hdr->bfd_section = asect; | |
2637 | this_hdr->contents = NULL; | |
2638 | ||
3cddba1e L |
2639 | /* If the section type is unspecified, we set it based on |
2640 | asect->flags. */ | |
2641 | if (this_hdr->sh_type == SHT_NULL) | |
2642 | { | |
45c5e9ed L |
2643 | if ((asect->flags & SEC_GROUP) != 0) |
2644 | { | |
2645 | /* We also need to mark SHF_GROUP here for relocatable | |
2646 | link. */ | |
2647 | struct bfd_link_order *l; | |
2648 | asection *elt; | |
2649 | ||
8423293d | 2650 | for (l = asect->map_head.link_order; l != NULL; l = l->next) |
45c5e9ed L |
2651 | if (l->type == bfd_indirect_link_order |
2652 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2653 | do | |
2654 | { | |
2655 | /* The name is not important. Anything will do. */ | |
2656 | elf_group_name (elt->output_section) = "G"; | |
2657 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2658 | ||
2659 | elt = elf_next_in_group (elt); | |
2660 | /* During a relocatable link, the lists are | |
2661 | circular. */ | |
2662 | } | |
2663 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2664 | ||
2665 | this_hdr->sh_type = SHT_GROUP; | |
2666 | } | |
2667 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2668 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2669 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2670 | this_hdr->sh_type = SHT_NOBITS; | |
2671 | else | |
2672 | this_hdr->sh_type = SHT_PROGBITS; | |
2673 | } | |
2674 | ||
2f89ff8d | 2675 | switch (this_hdr->sh_type) |
252b5132 | 2676 | { |
2f89ff8d | 2677 | default: |
2f89ff8d L |
2678 | break; |
2679 | ||
2680 | case SHT_STRTAB: | |
2681 | case SHT_INIT_ARRAY: | |
2682 | case SHT_FINI_ARRAY: | |
2683 | case SHT_PREINIT_ARRAY: | |
2684 | case SHT_NOTE: | |
2685 | case SHT_NOBITS: | |
2686 | case SHT_PROGBITS: | |
2687 | break; | |
2688 | ||
2689 | case SHT_HASH: | |
c7ac6ff8 | 2690 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2691 | break; |
5de3bf90 | 2692 | |
2f89ff8d | 2693 | case SHT_DYNSYM: |
252b5132 | 2694 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2695 | break; |
2696 | ||
2697 | case SHT_DYNAMIC: | |
252b5132 | 2698 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2699 | break; |
2700 | ||
2701 | case SHT_RELA: | |
2702 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2703 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2704 | break; | |
2705 | ||
2706 | case SHT_REL: | |
2707 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2708 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2709 | break; | |
2710 | ||
2711 | case SHT_GNU_versym: | |
252b5132 | 2712 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2713 | break; |
2714 | ||
2715 | case SHT_GNU_verdef: | |
252b5132 RH |
2716 | this_hdr->sh_entsize = 0; |
2717 | /* objcopy or strip will copy over sh_info, but may not set | |
2718 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2719 | zero. */ | |
2720 | if (this_hdr->sh_info == 0) | |
2721 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2722 | else | |
2723 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2724 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2725 | break; |
2726 | ||
2727 | case SHT_GNU_verneed: | |
252b5132 RH |
2728 | this_hdr->sh_entsize = 0; |
2729 | /* objcopy or strip will copy over sh_info, but may not set | |
2730 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2731 | zero. */ | |
2732 | if (this_hdr->sh_info == 0) | |
2733 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2734 | else | |
2735 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2736 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2737 | break; |
2738 | ||
2739 | case SHT_GROUP: | |
dbb410c3 | 2740 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2741 | break; |
dbb410c3 | 2742 | } |
252b5132 RH |
2743 | |
2744 | if ((asect->flags & SEC_ALLOC) != 0) | |
2745 | this_hdr->sh_flags |= SHF_ALLOC; | |
2746 | if ((asect->flags & SEC_READONLY) == 0) | |
2747 | this_hdr->sh_flags |= SHF_WRITE; | |
2748 | if ((asect->flags & SEC_CODE) != 0) | |
2749 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2750 | if ((asect->flags & SEC_MERGE) != 0) |
2751 | { | |
2752 | this_hdr->sh_flags |= SHF_MERGE; | |
2753 | this_hdr->sh_entsize = asect->entsize; | |
2754 | if ((asect->flags & SEC_STRINGS) != 0) | |
2755 | this_hdr->sh_flags |= SHF_STRINGS; | |
2756 | } | |
1126897b | 2757 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2758 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2759 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2760 | { |
2761 | this_hdr->sh_flags |= SHF_TLS; | |
eea6121a | 2762 | if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) |
704afa60 JJ |
2763 | { |
2764 | struct bfd_link_order *o; | |
b34976b6 | 2765 | |
704afa60 | 2766 | this_hdr->sh_size = 0; |
8423293d | 2767 | for (o = asect->map_head.link_order; o != NULL; o = o->next) |
704afa60 JJ |
2768 | if (this_hdr->sh_size < o->offset + o->size) |
2769 | this_hdr->sh_size = o->offset + o->size; | |
2770 | if (this_hdr->sh_size) | |
2771 | this_hdr->sh_type = SHT_NOBITS; | |
2772 | } | |
2773 | } | |
252b5132 RH |
2774 | |
2775 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2776 | if (bed->elf_backend_fake_sections |
2777 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2778 | *failedptr = TRUE; |
252b5132 RH |
2779 | |
2780 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2781 | SHT_REL[A] section. If two relocation sections are required for |
2782 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2783 | create the other. */ |
23bc299b | 2784 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2785 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2786 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2787 | asect, |
68bfbfcc | 2788 | asect->use_rela_p)) |
b34976b6 | 2789 | *failedptr = TRUE; |
252b5132 RH |
2790 | } |
2791 | ||
dbb410c3 AM |
2792 | /* Fill in the contents of a SHT_GROUP section. */ |
2793 | ||
1126897b | 2794 | void |
217aa764 | 2795 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2796 | { |
217aa764 | 2797 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2798 | unsigned long symindx; |
9dce4196 | 2799 | asection *elt, *first; |
dbb410c3 AM |
2800 | unsigned char *loc; |
2801 | struct bfd_link_order *l; | |
b34976b6 | 2802 | bfd_boolean gas; |
dbb410c3 | 2803 | |
7e4111ad L |
2804 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2805 | elfxx-ia64.c. */ | |
2806 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2807 | || *failedptr) |
2808 | return; | |
2809 | ||
1126897b AM |
2810 | symindx = 0; |
2811 | if (elf_group_id (sec) != NULL) | |
2812 | symindx = elf_group_id (sec)->udata.i; | |
2813 | ||
2814 | if (symindx == 0) | |
2815 | { | |
2816 | /* If called from the assembler, swap_out_syms will have set up | |
2817 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2818 | if (elf_section_syms (abfd) != NULL) | |
2819 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2820 | else | |
2821 | symindx = sec->target_index; | |
2822 | } | |
dbb410c3 AM |
2823 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2824 | ||
1126897b | 2825 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2826 | gas = TRUE; |
dbb410c3 AM |
2827 | if (sec->contents == NULL) |
2828 | { | |
b34976b6 | 2829 | gas = FALSE; |
eea6121a | 2830 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2831 | |
2832 | /* Arrange for the section to be written out. */ | |
2833 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2834 | if (sec->contents == NULL) |
2835 | { | |
b34976b6 | 2836 | *failedptr = TRUE; |
dbb410c3 AM |
2837 | return; |
2838 | } | |
2839 | } | |
2840 | ||
eea6121a | 2841 | loc = sec->contents + sec->size; |
dbb410c3 | 2842 | |
9dce4196 AM |
2843 | /* Get the pointer to the first section in the group that gas |
2844 | squirreled away here. objcopy arranges for this to be set to the | |
2845 | start of the input section group. */ | |
2846 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2847 | |
2848 | /* First element is a flag word. Rest of section is elf section | |
2849 | indices for all the sections of the group. Write them backwards | |
2850 | just to keep the group in the same order as given in .section | |
2851 | directives, not that it matters. */ | |
2852 | while (elt != NULL) | |
2853 | { | |
9dce4196 AM |
2854 | asection *s; |
2855 | unsigned int idx; | |
2856 | ||
dbb410c3 | 2857 | loc -= 4; |
9dce4196 AM |
2858 | s = elt; |
2859 | if (!gas) | |
2860 | s = s->output_section; | |
2861 | idx = 0; | |
2862 | if (s != NULL) | |
2863 | idx = elf_section_data (s)->this_idx; | |
2864 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2865 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2866 | if (elt == first) |
2867 | break; | |
dbb410c3 AM |
2868 | } |
2869 | ||
2870 | /* If this is a relocatable link, then the above did nothing because | |
2871 | SEC is the output section. Look through the input sections | |
2872 | instead. */ | |
8423293d | 2873 | for (l = sec->map_head.link_order; l != NULL; l = l->next) |
dbb410c3 | 2874 | if (l->type == bfd_indirect_link_order |
945906ff | 2875 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2876 | do |
2877 | { | |
2878 | loc -= 4; | |
2879 | H_PUT_32 (abfd, | |
2880 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2881 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2882 | /* During a relocatable link, the lists are circular. */ |
2883 | } | |
945906ff | 2884 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2885 | |
3d7f7666 | 2886 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2887 | abort (); |
dbb410c3 | 2888 | |
9dce4196 | 2889 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2890 | } |
2891 | ||
252b5132 RH |
2892 | /* Assign all ELF section numbers. The dummy first section is handled here |
2893 | too. The link/info pointers for the standard section types are filled | |
2894 | in here too, while we're at it. */ | |
2895 | ||
b34976b6 | 2896 | static bfd_boolean |
da9f89d4 | 2897 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2898 | { |
2899 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2900 | asection *sec; | |
2b0f7ef9 | 2901 | unsigned int section_number, secn; |
252b5132 | 2902 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2903 | struct bfd_elf_section_data *d; |
252b5132 RH |
2904 | |
2905 | section_number = 1; | |
2906 | ||
2b0f7ef9 JJ |
2907 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2908 | ||
da9f89d4 L |
2909 | /* SHT_GROUP sections are in relocatable files only. */ |
2910 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2911 | { |
da9f89d4 | 2912 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2913 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2914 | { |
5daa8fe7 | 2915 | d = elf_section_data (sec); |
da9f89d4 L |
2916 | |
2917 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2918 | { | |
5daa8fe7 | 2919 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2920 | { |
2921 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2922 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2923 | abfd->section_count--; |
da9f89d4 L |
2924 | } |
2925 | else | |
2926 | { | |
2927 | if (section_number == SHN_LORESERVE) | |
2928 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2929 | d->this_idx = section_number++; | |
2930 | } | |
2931 | } | |
47cc2cf5 PB |
2932 | } |
2933 | } | |
2934 | ||
2935 | for (sec = abfd->sections; sec; sec = sec->next) | |
2936 | { | |
2937 | d = elf_section_data (sec); | |
2938 | ||
2939 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2940 | { | |
2941 | if (section_number == SHN_LORESERVE) | |
2942 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2943 | d->this_idx = section_number++; | |
2944 | } | |
2b0f7ef9 | 2945 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2946 | if ((sec->flags & SEC_RELOC) == 0) |
2947 | d->rel_idx = 0; | |
2948 | else | |
2b0f7ef9 | 2949 | { |
9ad5cbcf AM |
2950 | if (section_number == SHN_LORESERVE) |
2951 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2952 | d->rel_idx = section_number++; |
2953 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2954 | } | |
23bc299b MM |
2955 | |
2956 | if (d->rel_hdr2) | |
2b0f7ef9 | 2957 | { |
9ad5cbcf AM |
2958 | if (section_number == SHN_LORESERVE) |
2959 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2960 | d->rel_idx2 = section_number++; |
2961 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2962 | } | |
23bc299b MM |
2963 | else |
2964 | d->rel_idx2 = 0; | |
252b5132 RH |
2965 | } |
2966 | ||
9ad5cbcf AM |
2967 | if (section_number == SHN_LORESERVE) |
2968 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2969 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2970 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2971 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2972 | |
2973 | if (bfd_get_symcount (abfd) > 0) | |
2974 | { | |
9ad5cbcf AM |
2975 | if (section_number == SHN_LORESERVE) |
2976 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2977 | t->symtab_section = section_number++; |
2b0f7ef9 | 2978 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2979 | if (section_number > SHN_LORESERVE - 2) |
2980 | { | |
2981 | if (section_number == SHN_LORESERVE) | |
2982 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2983 | t->symtab_shndx_section = section_number++; | |
2984 | t->symtab_shndx_hdr.sh_name | |
2985 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2986 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2987 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2988 | return FALSE; |
9ad5cbcf AM |
2989 | } |
2990 | if (section_number == SHN_LORESERVE) | |
2991 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2992 | t->strtab_section = section_number++; |
2b0f7ef9 | 2993 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2994 | } |
2995 | ||
2b0f7ef9 JJ |
2996 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2997 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2998 | |
2999 | elf_numsections (abfd) = section_number; | |
252b5132 | 3000 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3001 | if (section_number > SHN_LORESERVE) |
3002 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3003 | |
3004 | /* Set up the list of section header pointers, in agreement with the | |
3005 | indices. */ | |
d0fb9a8d | 3006 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 3007 | if (i_shdrp == NULL) |
b34976b6 | 3008 | return FALSE; |
252b5132 | 3009 | |
d0fb9a8d | 3010 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
3011 | if (i_shdrp[0] == NULL) |
3012 | { | |
3013 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3014 | return FALSE; |
252b5132 | 3015 | } |
252b5132 RH |
3016 | |
3017 | elf_elfsections (abfd) = i_shdrp; | |
3018 | ||
3019 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3020 | if (bfd_get_symcount (abfd) > 0) | |
3021 | { | |
3022 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3023 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3024 | { | |
3025 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3026 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3027 | } | |
252b5132 RH |
3028 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3029 | t->symtab_hdr.sh_link = t->strtab_section; | |
3030 | } | |
38ce5b11 | 3031 | |
252b5132 RH |
3032 | for (sec = abfd->sections; sec; sec = sec->next) |
3033 | { | |
3034 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3035 | asection *s; | |
3036 | const char *name; | |
3037 | ||
3038 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3039 | if (d->rel_idx != 0) | |
3040 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3041 | if (d->rel_idx2 != 0) |
3042 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3043 | |
3044 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3045 | ||
3046 | /* sh_link of a reloc section is the section index of the symbol | |
3047 | table. sh_info is the section index of the section to which | |
3048 | the relocation entries apply. */ | |
3049 | if (d->rel_idx != 0) | |
3050 | { | |
3051 | d->rel_hdr.sh_link = t->symtab_section; | |
3052 | d->rel_hdr.sh_info = d->this_idx; | |
3053 | } | |
23bc299b MM |
3054 | if (d->rel_idx2 != 0) |
3055 | { | |
3056 | d->rel_hdr2->sh_link = t->symtab_section; | |
3057 | d->rel_hdr2->sh_info = d->this_idx; | |
3058 | } | |
252b5132 | 3059 | |
38ce5b11 L |
3060 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3061 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3062 | { | |
3063 | s = elf_linked_to_section (sec); | |
3064 | if (s) | |
3065 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3066 | else | |
3067 | { | |
3068 | struct bfd_link_order *p; | |
3069 | ||
3070 | /* Find out what the corresponding section in output | |
3071 | is. */ | |
8423293d | 3072 | for (p = sec->map_head.link_order; p != NULL; p = p->next) |
38ce5b11 L |
3073 | { |
3074 | s = p->u.indirect.section; | |
3075 | if (p->type == bfd_indirect_link_order | |
3076 | && (bfd_get_flavour (s->owner) | |
3077 | == bfd_target_elf_flavour)) | |
3078 | { | |
3079 | Elf_Internal_Shdr ** const elf_shdrp | |
3080 | = elf_elfsections (s->owner); | |
3081 | int elfsec | |
3082 | = _bfd_elf_section_from_bfd_section (s->owner, s); | |
3083 | elfsec = elf_shdrp[elfsec]->sh_link; | |
185d09ad L |
3084 | /* PR 290: |
3085 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
ff01938b | 3086 | SHF_LINK_ORDER. But it doesn't set the sh_link or |
185d09ad L |
3087 | sh_info fields. Hence we could get the situation |
3088 | where elfsec is 0. */ | |
3089 | if (elfsec == 0) | |
3090 | { | |
3091 | const struct elf_backend_data *bed | |
3092 | = get_elf_backend_data (abfd); | |
3093 | if (bed->link_order_error_handler) | |
d003868e | 3094 | bed->link_order_error_handler |
28b13744 | 3095 | (_("%B: warning: sh_link not set for section `%A'"), |
d003868e | 3096 | abfd, s); |
185d09ad L |
3097 | } |
3098 | else | |
3099 | { | |
01b3c8ab L |
3100 | s = elf_shdrp[elfsec]->bfd_section; |
3101 | if (elf_discarded_section (s)) | |
3102 | { | |
3103 | asection *kept; | |
3104 | (*_bfd_error_handler) | |
3105 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3106 | abfd, d->this_hdr.bfd_section, | |
3107 | s, s->owner); | |
3108 | /* Point to the kept section if it has | |
3109 | the same size as the discarded | |
3110 | one. */ | |
3111 | kept = _bfd_elf_check_kept_section (s); | |
3112 | if (kept == NULL) | |
3113 | { | |
3114 | bfd_set_error (bfd_error_bad_value); | |
3115 | return FALSE; | |
3116 | } | |
2796fd96 | 3117 | s = kept; |
01b3c8ab L |
3118 | } |
3119 | s = s->output_section; | |
185d09ad L |
3120 | BFD_ASSERT (s != NULL); |
3121 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3122 | } | |
38ce5b11 L |
3123 | break; |
3124 | } | |
3125 | } | |
3126 | } | |
3127 | } | |
3128 | ||
252b5132 RH |
3129 | switch (d->this_hdr.sh_type) |
3130 | { | |
3131 | case SHT_REL: | |
3132 | case SHT_RELA: | |
3133 | /* A reloc section which we are treating as a normal BFD | |
3134 | section. sh_link is the section index of the symbol | |
3135 | table. sh_info is the section index of the section to | |
3136 | which the relocation entries apply. We assume that an | |
3137 | allocated reloc section uses the dynamic symbol table. | |
3138 | FIXME: How can we be sure? */ | |
3139 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3140 | if (s != NULL) | |
3141 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3142 | ||
3143 | /* We look up the section the relocs apply to by name. */ | |
3144 | name = sec->name; | |
3145 | if (d->this_hdr.sh_type == SHT_REL) | |
3146 | name += 4; | |
3147 | else | |
3148 | name += 5; | |
3149 | s = bfd_get_section_by_name (abfd, name); | |
3150 | if (s != NULL) | |
3151 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3152 | break; | |
3153 | ||
3154 | case SHT_STRTAB: | |
3155 | /* We assume that a section named .stab*str is a stabs | |
3156 | string section. We look for a section with the same name | |
3157 | but without the trailing ``str'', and set its sh_link | |
3158 | field to point to this section. */ | |
3159 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3160 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3161 | { | |
3162 | size_t len; | |
3163 | char *alc; | |
3164 | ||
3165 | len = strlen (sec->name); | |
217aa764 | 3166 | alc = bfd_malloc (len - 2); |
252b5132 | 3167 | if (alc == NULL) |
b34976b6 | 3168 | return FALSE; |
d4c88bbb | 3169 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3170 | alc[len - 3] = '\0'; |
3171 | s = bfd_get_section_by_name (abfd, alc); | |
3172 | free (alc); | |
3173 | if (s != NULL) | |
3174 | { | |
3175 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3176 | ||
3177 | /* This is a .stab section. */ | |
0594c12d AM |
3178 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3179 | elf_section_data (s)->this_hdr.sh_entsize | |
3180 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3181 | } |
3182 | } | |
3183 | break; | |
3184 | ||
3185 | case SHT_DYNAMIC: | |
3186 | case SHT_DYNSYM: | |
3187 | case SHT_GNU_verneed: | |
3188 | case SHT_GNU_verdef: | |
3189 | /* sh_link is the section header index of the string table | |
3190 | used for the dynamic entries, or the symbol table, or the | |
3191 | version strings. */ | |
3192 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3193 | if (s != NULL) | |
3194 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3195 | break; | |
3196 | ||
7f1204bb JJ |
3197 | case SHT_GNU_LIBLIST: |
3198 | /* sh_link is the section header index of the prelink library | |
3199 | list | |
3200 | used for the dynamic entries, or the symbol table, or the | |
3201 | version strings. */ | |
3202 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3203 | ? ".dynstr" : ".gnu.libstr"); | |
3204 | if (s != NULL) | |
3205 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3206 | break; | |
3207 | ||
252b5132 RH |
3208 | case SHT_HASH: |
3209 | case SHT_GNU_versym: | |
3210 | /* sh_link is the section header index of the symbol table | |
3211 | this hash table or version table is for. */ | |
3212 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3213 | if (s != NULL) | |
3214 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3215 | break; | |
dbb410c3 AM |
3216 | |
3217 | case SHT_GROUP: | |
3218 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3219 | } |
3220 | } | |
3221 | ||
2b0f7ef9 | 3222 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3223 | if (i_shdrp[secn] == NULL) |
3224 | i_shdrp[secn] = i_shdrp[0]; | |
3225 | else | |
3226 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3227 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3228 | return TRUE; |
252b5132 RH |
3229 | } |
3230 | ||
3231 | /* Map symbol from it's internal number to the external number, moving | |
3232 | all local symbols to be at the head of the list. */ | |
3233 | ||
268b6b39 | 3234 | static int |
217aa764 | 3235 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3236 | { |
3237 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3238 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3239 | if (bed->elf_backend_sym_is_global) |
3240 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3241 | |
3242 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3243 | || bfd_is_und_section (bfd_get_section (sym)) | |
3244 | || bfd_is_com_section (bfd_get_section (sym))); | |
3245 | } | |
3246 | ||
b34976b6 | 3247 | static bfd_boolean |
217aa764 | 3248 | elf_map_symbols (bfd *abfd) |
252b5132 | 3249 | { |
dc810e39 | 3250 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3251 | asymbol **syms = bfd_get_outsymbols (abfd); |
3252 | asymbol **sect_syms; | |
dc810e39 AM |
3253 | unsigned int num_locals = 0; |
3254 | unsigned int num_globals = 0; | |
3255 | unsigned int num_locals2 = 0; | |
3256 | unsigned int num_globals2 = 0; | |
252b5132 | 3257 | int max_index = 0; |
dc810e39 | 3258 | unsigned int idx; |
252b5132 RH |
3259 | asection *asect; |
3260 | asymbol **new_syms; | |
252b5132 RH |
3261 | |
3262 | #ifdef DEBUG | |
3263 | fprintf (stderr, "elf_map_symbols\n"); | |
3264 | fflush (stderr); | |
3265 | #endif | |
3266 | ||
252b5132 RH |
3267 | for (asect = abfd->sections; asect; asect = asect->next) |
3268 | { | |
3269 | if (max_index < asect->index) | |
3270 | max_index = asect->index; | |
3271 | } | |
3272 | ||
3273 | max_index++; | |
d0fb9a8d | 3274 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3275 | if (sect_syms == NULL) |
b34976b6 | 3276 | return FALSE; |
252b5132 | 3277 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3278 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3279 | |
079e9a2f AM |
3280 | /* Init sect_syms entries for any section symbols we have already |
3281 | decided to output. */ | |
252b5132 RH |
3282 | for (idx = 0; idx < symcount; idx++) |
3283 | { | |
dc810e39 | 3284 | asymbol *sym = syms[idx]; |
c044fabd | 3285 | |
252b5132 RH |
3286 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3287 | && sym->value == 0) | |
3288 | { | |
3289 | asection *sec; | |
3290 | ||
3291 | sec = sym->section; | |
3292 | ||
3293 | if (sec->owner != NULL) | |
3294 | { | |
3295 | if (sec->owner != abfd) | |
3296 | { | |
3297 | if (sec->output_offset != 0) | |
3298 | continue; | |
c044fabd | 3299 | |
252b5132 RH |
3300 | sec = sec->output_section; |
3301 | ||
079e9a2f AM |
3302 | /* Empty sections in the input files may have had a |
3303 | section symbol created for them. (See the comment | |
3304 | near the end of _bfd_generic_link_output_symbols in | |
3305 | linker.c). If the linker script discards such | |
3306 | sections then we will reach this point. Since we know | |
3307 | that we cannot avoid this case, we detect it and skip | |
3308 | the abort and the assignment to the sect_syms array. | |
3309 | To reproduce this particular case try running the | |
3310 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3311 | port that uses the generic linker. */ | |
252b5132 RH |
3312 | if (sec->owner == NULL) |
3313 | continue; | |
3314 | ||
3315 | BFD_ASSERT (sec->owner == abfd); | |
3316 | } | |
3317 | sect_syms[sec->index] = syms[idx]; | |
3318 | } | |
3319 | } | |
3320 | } | |
3321 | ||
252b5132 RH |
3322 | /* Classify all of the symbols. */ |
3323 | for (idx = 0; idx < symcount; idx++) | |
3324 | { | |
3325 | if (!sym_is_global (abfd, syms[idx])) | |
3326 | num_locals++; | |
3327 | else | |
3328 | num_globals++; | |
3329 | } | |
079e9a2f AM |
3330 | |
3331 | /* We will be adding a section symbol for each BFD section. Most normal | |
3332 | sections will already have a section symbol in outsymbols, but | |
3333 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3334 | at least in that case. */ | |
252b5132 RH |
3335 | for (asect = abfd->sections; asect; asect = asect->next) |
3336 | { | |
079e9a2f | 3337 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3338 | { |
079e9a2f | 3339 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3340 | num_locals++; |
3341 | else | |
3342 | num_globals++; | |
252b5132 RH |
3343 | } |
3344 | } | |
3345 | ||
3346 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3347 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3348 | |
252b5132 | 3349 | if (new_syms == NULL) |
b34976b6 | 3350 | return FALSE; |
252b5132 RH |
3351 | |
3352 | for (idx = 0; idx < symcount; idx++) | |
3353 | { | |
3354 | asymbol *sym = syms[idx]; | |
dc810e39 | 3355 | unsigned int i; |
252b5132 RH |
3356 | |
3357 | if (!sym_is_global (abfd, sym)) | |
3358 | i = num_locals2++; | |
3359 | else | |
3360 | i = num_locals + num_globals2++; | |
3361 | new_syms[i] = sym; | |
3362 | sym->udata.i = i + 1; | |
3363 | } | |
3364 | for (asect = abfd->sections; asect; asect = asect->next) | |
3365 | { | |
079e9a2f | 3366 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3367 | { |
079e9a2f | 3368 | asymbol *sym = asect->symbol; |
dc810e39 | 3369 | unsigned int i; |
252b5132 | 3370 | |
079e9a2f | 3371 | sect_syms[asect->index] = sym; |
252b5132 RH |
3372 | if (!sym_is_global (abfd, sym)) |
3373 | i = num_locals2++; | |
3374 | else | |
3375 | i = num_locals + num_globals2++; | |
3376 | new_syms[i] = sym; | |
3377 | sym->udata.i = i + 1; | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3382 | ||
3383 | elf_num_locals (abfd) = num_locals; | |
3384 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3385 | return TRUE; |
252b5132 RH |
3386 | } |
3387 | ||
3388 | /* Align to the maximum file alignment that could be required for any | |
3389 | ELF data structure. */ | |
3390 | ||
268b6b39 | 3391 | static inline file_ptr |
217aa764 | 3392 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3393 | { |
3394 | return (off + align - 1) & ~(align - 1); | |
3395 | } | |
3396 | ||
3397 | /* Assign a file position to a section, optionally aligning to the | |
3398 | required section alignment. */ | |
3399 | ||
217aa764 AM |
3400 | file_ptr |
3401 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3402 | file_ptr offset, | |
3403 | bfd_boolean align) | |
252b5132 RH |
3404 | { |
3405 | if (align) | |
3406 | { | |
3407 | unsigned int al; | |
3408 | ||
3409 | al = i_shdrp->sh_addralign; | |
3410 | if (al > 1) | |
3411 | offset = BFD_ALIGN (offset, al); | |
3412 | } | |
3413 | i_shdrp->sh_offset = offset; | |
3414 | if (i_shdrp->bfd_section != NULL) | |
3415 | i_shdrp->bfd_section->filepos = offset; | |
3416 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3417 | offset += i_shdrp->sh_size; | |
3418 | return offset; | |
3419 | } | |
3420 | ||
3421 | /* Compute the file positions we are going to put the sections at, and | |
3422 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3423 | is not NULL, this is being called by the ELF backend linker. */ | |
3424 | ||
b34976b6 | 3425 | bfd_boolean |
217aa764 AM |
3426 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3427 | struct bfd_link_info *link_info) | |
252b5132 | 3428 | { |
9c5bfbb7 | 3429 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3430 | bfd_boolean failed; |
4b6c0f2f | 3431 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3432 | Elf_Internal_Shdr *shstrtab_hdr; |
3433 | ||
3434 | if (abfd->output_has_begun) | |
b34976b6 | 3435 | return TRUE; |
252b5132 RH |
3436 | |
3437 | /* Do any elf backend specific processing first. */ | |
3438 | if (bed->elf_backend_begin_write_processing) | |
3439 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3440 | ||
3441 | if (! prep_headers (abfd)) | |
b34976b6 | 3442 | return FALSE; |
252b5132 | 3443 | |
e6c51ed4 NC |
3444 | /* Post process the headers if necessary. */ |
3445 | if (bed->elf_backend_post_process_headers) | |
3446 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3447 | ||
b34976b6 | 3448 | failed = FALSE; |
252b5132 RH |
3449 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3450 | if (failed) | |
b34976b6 | 3451 | return FALSE; |
252b5132 | 3452 | |
da9f89d4 | 3453 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3454 | return FALSE; |
252b5132 RH |
3455 | |
3456 | /* The backend linker builds symbol table information itself. */ | |
3457 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3458 | { | |
3459 | /* Non-zero if doing a relocatable link. */ | |
3460 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3461 | ||
3462 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3463 | return FALSE; |
252b5132 RH |
3464 | } |
3465 | ||
1126897b | 3466 | if (link_info == NULL) |
dbb410c3 | 3467 | { |
1126897b | 3468 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3469 | if (failed) |
b34976b6 | 3470 | return FALSE; |
dbb410c3 AM |
3471 | } |
3472 | ||
252b5132 RH |
3473 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3474 | /* sh_name was set in prep_headers. */ | |
3475 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3476 | shstrtab_hdr->sh_flags = 0; | |
3477 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3478 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3479 | shstrtab_hdr->sh_entsize = 0; |
3480 | shstrtab_hdr->sh_link = 0; | |
3481 | shstrtab_hdr->sh_info = 0; | |
3482 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3483 | shstrtab_hdr->sh_addralign = 1; | |
3484 | ||
c84fca4d | 3485 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3486 | return FALSE; |
252b5132 RH |
3487 | |
3488 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3489 | { | |
3490 | file_ptr off; | |
3491 | Elf_Internal_Shdr *hdr; | |
3492 | ||
3493 | off = elf_tdata (abfd)->next_file_pos; | |
3494 | ||
3495 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3496 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3497 | |
9ad5cbcf AM |
3498 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3499 | if (hdr->sh_size != 0) | |
b34976b6 | 3500 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3501 | |
252b5132 | 3502 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3503 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3504 | |
3505 | elf_tdata (abfd)->next_file_pos = off; | |
3506 | ||
3507 | /* Now that we know where the .strtab section goes, write it | |
3508 | out. */ | |
3509 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3510 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3511 | return FALSE; |
252b5132 RH |
3512 | _bfd_stringtab_free (strtab); |
3513 | } | |
3514 | ||
b34976b6 | 3515 | abfd->output_has_begun = TRUE; |
252b5132 | 3516 | |
b34976b6 | 3517 | return TRUE; |
252b5132 RH |
3518 | } |
3519 | ||
3520 | /* Create a mapping from a set of sections to a program segment. */ | |
3521 | ||
217aa764 AM |
3522 | static struct elf_segment_map * |
3523 | make_mapping (bfd *abfd, | |
3524 | asection **sections, | |
3525 | unsigned int from, | |
3526 | unsigned int to, | |
3527 | bfd_boolean phdr) | |
252b5132 RH |
3528 | { |
3529 | struct elf_segment_map *m; | |
3530 | unsigned int i; | |
3531 | asection **hdrpp; | |
dc810e39 | 3532 | bfd_size_type amt; |
252b5132 | 3533 | |
dc810e39 AM |
3534 | amt = sizeof (struct elf_segment_map); |
3535 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3536 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3537 | if (m == NULL) |
3538 | return NULL; | |
3539 | m->next = NULL; | |
3540 | m->p_type = PT_LOAD; | |
3541 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3542 | m->sections[i - from] = *hdrpp; | |
3543 | m->count = to - from; | |
3544 | ||
3545 | if (from == 0 && phdr) | |
3546 | { | |
3547 | /* Include the headers in the first PT_LOAD segment. */ | |
3548 | m->includes_filehdr = 1; | |
3549 | m->includes_phdrs = 1; | |
3550 | } | |
3551 | ||
3552 | return m; | |
3553 | } | |
3554 | ||
229fcec5 MM |
3555 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3556 | on failure. */ | |
3557 | ||
3558 | struct elf_segment_map * | |
3559 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3560 | { | |
3561 | struct elf_segment_map *m; | |
3562 | ||
3563 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3564 | if (m == NULL) | |
3565 | return NULL; | |
3566 | m->next = NULL; | |
3567 | m->p_type = PT_DYNAMIC; | |
3568 | m->count = 1; | |
3569 | m->sections[0] = dynsec; | |
3570 | ||
3571 | return m; | |
3572 | } | |
3573 | ||
252b5132 RH |
3574 | /* Set up a mapping from BFD sections to program segments. */ |
3575 | ||
b34976b6 | 3576 | static bfd_boolean |
217aa764 | 3577 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3578 | { |
3579 | asection **sections = NULL; | |
3580 | asection *s; | |
3581 | unsigned int i; | |
3582 | unsigned int count; | |
3583 | struct elf_segment_map *mfirst; | |
3584 | struct elf_segment_map **pm; | |
3585 | struct elf_segment_map *m; | |
3586 | asection *last_hdr; | |
baaff79e | 3587 | bfd_vma last_size; |
252b5132 RH |
3588 | unsigned int phdr_index; |
3589 | bfd_vma maxpagesize; | |
3590 | asection **hdrpp; | |
b34976b6 AM |
3591 | bfd_boolean phdr_in_segment = TRUE; |
3592 | bfd_boolean writable; | |
13ae64f3 JJ |
3593 | int tls_count = 0; |
3594 | asection *first_tls = NULL; | |
65765700 | 3595 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3596 | bfd_size_type amt; |
252b5132 RH |
3597 | |
3598 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3599 | return TRUE; |
252b5132 RH |
3600 | |
3601 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3602 | return TRUE; |
252b5132 RH |
3603 | |
3604 | /* Select the allocated sections, and sort them. */ | |
3605 | ||
d0fb9a8d | 3606 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
252b5132 RH |
3607 | if (sections == NULL) |
3608 | goto error_return; | |
3609 | ||
3610 | i = 0; | |
3611 | for (s = abfd->sections; s != NULL; s = s->next) | |
3612 | { | |
3613 | if ((s->flags & SEC_ALLOC) != 0) | |
3614 | { | |
3615 | sections[i] = s; | |
3616 | ++i; | |
3617 | } | |
3618 | } | |
3619 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3620 | count = i; | |
3621 | ||
3622 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3623 | ||
3624 | /* Build the mapping. */ | |
3625 | ||
3626 | mfirst = NULL; | |
3627 | pm = &mfirst; | |
3628 | ||
3629 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3630 | the program headers and a PT_INTERP segment for the .interp | |
3631 | section. */ | |
3632 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3633 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3634 | { | |
dc810e39 | 3635 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3636 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3637 | if (m == NULL) |
3638 | goto error_return; | |
3639 | m->next = NULL; | |
3640 | m->p_type = PT_PHDR; | |
3641 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3642 | m->p_flags = PF_R | PF_X; | |
3643 | m->p_flags_valid = 1; | |
3644 | m->includes_phdrs = 1; | |
3645 | ||
3646 | *pm = m; | |
3647 | pm = &m->next; | |
3648 | ||
dc810e39 | 3649 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3650 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3651 | if (m == NULL) |
3652 | goto error_return; | |
3653 | m->next = NULL; | |
3654 | m->p_type = PT_INTERP; | |
3655 | m->count = 1; | |
3656 | m->sections[0] = s; | |
3657 | ||
3658 | *pm = m; | |
3659 | pm = &m->next; | |
3660 | } | |
3661 | ||
3662 | /* Look through the sections. We put sections in the same program | |
3663 | segment when the start of the second section can be placed within | |
3664 | a few bytes of the end of the first section. */ | |
3665 | last_hdr = NULL; | |
baaff79e | 3666 | last_size = 0; |
252b5132 RH |
3667 | phdr_index = 0; |
3668 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3669 | writable = FALSE; |
252b5132 RH |
3670 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3671 | if (dynsec != NULL | |
3672 | && (dynsec->flags & SEC_LOAD) == 0) | |
3673 | dynsec = NULL; | |
3674 | ||
3675 | /* Deal with -Ttext or something similar such that the first section | |
3676 | is not adjacent to the program headers. This is an | |
3677 | approximation, since at this point we don't know exactly how many | |
3678 | program headers we will need. */ | |
3679 | if (count > 0) | |
3680 | { | |
3681 | bfd_size_type phdr_size; | |
3682 | ||
3683 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3684 | if (phdr_size == 0) | |
3685 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3686 | if ((abfd->flags & D_PAGED) == 0 | |
3687 | || sections[0]->lma < phdr_size | |
3688 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3689 | phdr_in_segment = FALSE; |
252b5132 RH |
3690 | } |
3691 | ||
3692 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3693 | { | |
3694 | asection *hdr; | |
b34976b6 | 3695 | bfd_boolean new_segment; |
252b5132 RH |
3696 | |
3697 | hdr = *hdrpp; | |
3698 | ||
3699 | /* See if this section and the last one will fit in the same | |
3700 | segment. */ | |
3701 | ||
3702 | if (last_hdr == NULL) | |
3703 | { | |
3704 | /* If we don't have a segment yet, then we don't need a new | |
3705 | one (we build the last one after this loop). */ | |
b34976b6 | 3706 | new_segment = FALSE; |
252b5132 RH |
3707 | } |
3708 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3709 | { | |
3710 | /* If this section has a different relation between the | |
3711 | virtual address and the load address, then we need a new | |
3712 | segment. */ | |
b34976b6 | 3713 | new_segment = TRUE; |
252b5132 | 3714 | } |
baaff79e | 3715 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3716 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3717 | { | |
3718 | /* If putting this section in this segment would force us to | |
3719 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3720 | new_segment = TRUE; |
252b5132 | 3721 | } |
baaff79e JJ |
3722 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3723 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3724 | { |
3725 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3726 | nonloadable section in the same segment. |
3727 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3728 | new_segment = TRUE; |
252b5132 RH |
3729 | } |
3730 | else if ((abfd->flags & D_PAGED) == 0) | |
3731 | { | |
3732 | /* If the file is not demand paged, which means that we | |
3733 | don't require the sections to be correctly aligned in the | |
3734 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3735 | new_segment = FALSE; |
252b5132 RH |
3736 | } |
3737 | else if (! writable | |
3738 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3739 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3740 | & ~(maxpagesize - 1)) |
3741 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3742 | { |
3743 | /* We don't want to put a writable section in a read only | |
3744 | segment, unless they are on the same page in memory | |
3745 | anyhow. We already know that the last section does not | |
3746 | bring us past the current section on the page, so the | |
3747 | only case in which the new section is not on the same | |
3748 | page as the previous section is when the previous section | |
3749 | ends precisely on a page boundary. */ | |
b34976b6 | 3750 | new_segment = TRUE; |
252b5132 RH |
3751 | } |
3752 | else | |
3753 | { | |
3754 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3755 | new_segment = FALSE; |
252b5132 RH |
3756 | } |
3757 | ||
3758 | if (! new_segment) | |
3759 | { | |
3760 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3761 | writable = TRUE; |
baaff79e JJ |
3762 | last_hdr = hdr; |
3763 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3764 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3765 | last_size = hdr->size; |
baaff79e JJ |
3766 | else |
3767 | last_size = 0; | |
252b5132 RH |
3768 | continue; |
3769 | } | |
3770 | ||
3771 | /* We need a new program segment. We must create a new program | |
3772 | header holding all the sections from phdr_index until hdr. */ | |
3773 | ||
3774 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3775 | if (m == NULL) | |
3776 | goto error_return; | |
3777 | ||
3778 | *pm = m; | |
3779 | pm = &m->next; | |
3780 | ||
3781 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3782 | writable = TRUE; |
252b5132 | 3783 | else |
b34976b6 | 3784 | writable = FALSE; |
252b5132 RH |
3785 | |
3786 | last_hdr = hdr; | |
baaff79e JJ |
3787 | /* .tbss sections effectively have zero size. */ |
3788 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3789 | last_size = hdr->size; |
baaff79e JJ |
3790 | else |
3791 | last_size = 0; | |
252b5132 | 3792 | phdr_index = i; |
b34976b6 | 3793 | phdr_in_segment = FALSE; |
252b5132 RH |
3794 | } |
3795 | ||
3796 | /* Create a final PT_LOAD program segment. */ | |
3797 | if (last_hdr != NULL) | |
3798 | { | |
3799 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3800 | if (m == NULL) | |
3801 | goto error_return; | |
3802 | ||
3803 | *pm = m; | |
3804 | pm = &m->next; | |
3805 | } | |
3806 | ||
3807 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3808 | if (dynsec != NULL) | |
3809 | { | |
229fcec5 | 3810 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3811 | if (m == NULL) |
3812 | goto error_return; | |
252b5132 RH |
3813 | *pm = m; |
3814 | pm = &m->next; | |
3815 | } | |
3816 | ||
3817 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3818 | use bfd_get_section_by_name, because if we link together | |
3819 | nonloadable .note sections and loadable .note sections, we will | |
3820 | generate two .note sections in the output file. FIXME: Using | |
3821 | names for section types is bogus anyhow. */ | |
3822 | for (s = abfd->sections; s != NULL; s = s->next) | |
3823 | { | |
3824 | if ((s->flags & SEC_LOAD) != 0 | |
3825 | && strncmp (s->name, ".note", 5) == 0) | |
3826 | { | |
dc810e39 | 3827 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3828 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3829 | if (m == NULL) |
3830 | goto error_return; | |
3831 | m->next = NULL; | |
3832 | m->p_type = PT_NOTE; | |
3833 | m->count = 1; | |
3834 | m->sections[0] = s; | |
3835 | ||
3836 | *pm = m; | |
3837 | pm = &m->next; | |
3838 | } | |
13ae64f3 JJ |
3839 | if (s->flags & SEC_THREAD_LOCAL) |
3840 | { | |
3841 | if (! tls_count) | |
3842 | first_tls = s; | |
3843 | tls_count++; | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3848 | if (tls_count > 0) | |
3849 | { | |
3850 | int i; | |
3851 | ||
3852 | amt = sizeof (struct elf_segment_map); | |
3853 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3854 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3855 | if (m == NULL) |
3856 | goto error_return; | |
3857 | m->next = NULL; | |
3858 | m->p_type = PT_TLS; | |
3859 | m->count = tls_count; | |
3860 | /* Mandated PF_R. */ | |
3861 | m->p_flags = PF_R; | |
3862 | m->p_flags_valid = 1; | |
3863 | for (i = 0; i < tls_count; ++i) | |
3864 | { | |
3865 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3866 | m->sections[i] = first_tls; | |
3867 | first_tls = first_tls->next; | |
3868 | } | |
3869 | ||
3870 | *pm = m; | |
3871 | pm = &m->next; | |
252b5132 RH |
3872 | } |
3873 | ||
65765700 JJ |
3874 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3875 | segment. */ | |
126495ed AM |
3876 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3877 | if (eh_frame_hdr != NULL | |
3878 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3879 | { |
3880 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3881 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3882 | if (m == NULL) |
3883 | goto error_return; | |
3884 | m->next = NULL; | |
3885 | m->p_type = PT_GNU_EH_FRAME; | |
3886 | m->count = 1; | |
126495ed | 3887 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3888 | |
3889 | *pm = m; | |
3890 | pm = &m->next; | |
3891 | } | |
3892 | ||
9ee5e499 JJ |
3893 | if (elf_tdata (abfd)->stack_flags) |
3894 | { | |
3895 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3896 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3897 | if (m == NULL) |
3898 | goto error_return; | |
3899 | m->next = NULL; | |
3900 | m->p_type = PT_GNU_STACK; | |
3901 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3902 | m->p_flags_valid = 1; | |
3903 | ||
3904 | *pm = m; | |
3905 | pm = &m->next; | |
3906 | } | |
3907 | ||
8c37241b JJ |
3908 | if (elf_tdata (abfd)->relro) |
3909 | { | |
3910 | amt = sizeof (struct elf_segment_map); | |
3911 | m = bfd_zalloc (abfd, amt); | |
3912 | if (m == NULL) | |
3913 | goto error_return; | |
3914 | m->next = NULL; | |
3915 | m->p_type = PT_GNU_RELRO; | |
3916 | m->p_flags = PF_R; | |
3917 | m->p_flags_valid = 1; | |
3918 | ||
3919 | *pm = m; | |
3920 | pm = &m->next; | |
3921 | } | |
3922 | ||
252b5132 RH |
3923 | free (sections); |
3924 | sections = NULL; | |
3925 | ||
3926 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3927 | return TRUE; |
252b5132 RH |
3928 | |
3929 | error_return: | |
3930 | if (sections != NULL) | |
3931 | free (sections); | |
b34976b6 | 3932 | return FALSE; |
252b5132 RH |
3933 | } |
3934 | ||
3935 | /* Sort sections by address. */ | |
3936 | ||
3937 | static int | |
217aa764 | 3938 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3939 | { |
3940 | const asection *sec1 = *(const asection **) arg1; | |
3941 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3942 | bfd_size_type size1, size2; |
252b5132 RH |
3943 | |
3944 | /* Sort by LMA first, since this is the address used to | |
3945 | place the section into a segment. */ | |
3946 | if (sec1->lma < sec2->lma) | |
3947 | return -1; | |
3948 | else if (sec1->lma > sec2->lma) | |
3949 | return 1; | |
3950 | ||
3951 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3952 | the same, and this will do nothing. */ | |
3953 | if (sec1->vma < sec2->vma) | |
3954 | return -1; | |
3955 | else if (sec1->vma > sec2->vma) | |
3956 | return 1; | |
3957 | ||
3958 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3959 | ||
07c6e936 | 3960 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3961 | |
3962 | if (TOEND (sec1)) | |
3963 | { | |
3964 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3965 | { |
3966 | /* If the indicies are the same, do not return 0 | |
3967 | here, but continue to try the next comparison. */ | |
3968 | if (sec1->target_index - sec2->target_index != 0) | |
3969 | return sec1->target_index - sec2->target_index; | |
3970 | } | |
252b5132 RH |
3971 | else |
3972 | return 1; | |
3973 | } | |
00a7cdc5 | 3974 | else if (TOEND (sec2)) |
252b5132 RH |
3975 | return -1; |
3976 | ||
3977 | #undef TOEND | |
3978 | ||
00a7cdc5 NC |
3979 | /* Sort by size, to put zero sized sections |
3980 | before others at the same address. */ | |
252b5132 | 3981 | |
eea6121a AM |
3982 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3983 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3984 | |
3985 | if (size1 < size2) | |
252b5132 | 3986 | return -1; |
eecdbe52 | 3987 | if (size1 > size2) |
252b5132 RH |
3988 | return 1; |
3989 | ||
3990 | return sec1->target_index - sec2->target_index; | |
3991 | } | |
3992 | ||
340b6d91 AC |
3993 | /* Ian Lance Taylor writes: |
3994 | ||
3995 | We shouldn't be using % with a negative signed number. That's just | |
3996 | not good. We have to make sure either that the number is not | |
3997 | negative, or that the number has an unsigned type. When the types | |
3998 | are all the same size they wind up as unsigned. When file_ptr is a | |
3999 | larger signed type, the arithmetic winds up as signed long long, | |
4000 | which is wrong. | |
4001 | ||
4002 | What we're trying to say here is something like ``increase OFF by | |
4003 | the least amount that will cause it to be equal to the VMA modulo | |
4004 | the page size.'' */ | |
4005 | /* In other words, something like: | |
4006 | ||
4007 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4008 | off_offset = off % bed->maxpagesize; | |
4009 | if (vma_offset < off_offset) | |
4010 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4011 | else | |
4012 | adjustment = vma_offset - off_offset; | |
4013 | ||
4014 | which can can be collapsed into the expression below. */ | |
4015 | ||
4016 | static file_ptr | |
4017 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4018 | { | |
4019 | return ((vma - off) % maxpagesize); | |
4020 | } | |
4021 | ||
252b5132 RH |
4022 | /* Assign file positions to the sections based on the mapping from |
4023 | sections to segments. This function also sets up some fields in | |
4024 | the file header, and writes out the program headers. */ | |
4025 | ||
b34976b6 | 4026 | static bfd_boolean |
c84fca4d | 4027 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
4028 | { |
4029 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4030 | unsigned int count; | |
4031 | struct elf_segment_map *m; | |
4032 | unsigned int alloc; | |
4033 | Elf_Internal_Phdr *phdrs; | |
4034 | file_ptr off, voff; | |
4035 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4036 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4037 | Elf_Internal_Phdr *p; | |
4038 | ||
4039 | if (elf_tdata (abfd)->segment_map == NULL) | |
4040 | { | |
4041 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 4042 | return FALSE; |
252b5132 | 4043 | } |
1ed89aa9 NC |
4044 | else |
4045 | { | |
4046 | /* The placement algorithm assumes that non allocated sections are | |
4047 | not in PT_LOAD segments. We ensure this here by removing such | |
540b09cb AM |
4048 | sections from the segment map. We also remove excluded |
4049 | sections. */ | |
1ed89aa9 NC |
4050 | for (m = elf_tdata (abfd)->segment_map; |
4051 | m != NULL; | |
4052 | m = m->next) | |
4053 | { | |
4054 | unsigned int new_count; | |
4055 | unsigned int i; | |
4056 | ||
1ed89aa9 NC |
4057 | new_count = 0; |
4058 | for (i = 0; i < m->count; i ++) | |
4059 | { | |
540b09cb AM |
4060 | if ((m->sections[i]->flags & SEC_EXCLUDE) == 0 |
4061 | && ((m->sections[i]->flags & SEC_ALLOC) != 0 | |
4062 | || m->p_type != PT_LOAD)) | |
1ed89aa9 | 4063 | { |
47d9a591 | 4064 | if (i != new_count) |
1ed89aa9 NC |
4065 | m->sections[new_count] = m->sections[i]; |
4066 | ||
4067 | new_count ++; | |
4068 | } | |
4069 | } | |
4070 | ||
4071 | if (new_count != m->count) | |
4072 | m->count = new_count; | |
4073 | } | |
4074 | } | |
252b5132 RH |
4075 | |
4076 | if (bed->elf_backend_modify_segment_map) | |
4077 | { | |
c84fca4d | 4078 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 4079 | return FALSE; |
252b5132 RH |
4080 | } |
4081 | ||
4082 | count = 0; | |
4083 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4084 | ++count; | |
4085 | ||
4086 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4087 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
4088 | elf_elfheader (abfd)->e_phnum = count; | |
4089 | ||
4090 | if (count == 0) | |
0ebdbb83 BW |
4091 | { |
4092 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
4093 | return TRUE; | |
4094 | } | |
252b5132 RH |
4095 | |
4096 | /* If we already counted the number of program segments, make sure | |
4097 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
4098 | is used in a linker script. */ | |
4099 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
4100 | if (alloc != 0 && count > alloc) | |
4101 | { | |
4102 | ((*_bfd_error_handler) | |
b301b248 AM |
4103 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
4104 | abfd, alloc, count)); | |
252b5132 | 4105 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4106 | return FALSE; |
252b5132 RH |
4107 | } |
4108 | ||
4109 | if (alloc == 0) | |
4110 | alloc = count; | |
4111 | ||
d0fb9a8d | 4112 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
252b5132 | 4113 | if (phdrs == NULL) |
b34976b6 | 4114 | return FALSE; |
252b5132 RH |
4115 | |
4116 | off = bed->s->sizeof_ehdr; | |
4117 | off += alloc * bed->s->sizeof_phdr; | |
4118 | ||
4119 | filehdr_vaddr = 0; | |
4120 | filehdr_paddr = 0; | |
4121 | phdrs_vaddr = 0; | |
4122 | phdrs_paddr = 0; | |
4123 | ||
4124 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4125 | m != NULL; | |
4126 | m = m->next, p++) | |
4127 | { | |
4128 | unsigned int i; | |
4129 | asection **secpp; | |
4130 | ||
4131 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4132 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4133 | not be done to the PT_NOTE section of a corefile, which may |
4134 | contain several pseudo-sections artificially created by bfd. | |
4135 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4136 | if (m->count > 1 |
4137 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4138 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4139 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4140 | elf_sort_sections); | |
4141 | ||
b301b248 AM |
4142 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4143 | number of sections with contents contributing to both p_filesz | |
4144 | and p_memsz, followed by a number of sections with no contents | |
4145 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4146 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4147 | an adjustment we use for segments that have no file contents | |
4148 | but need zero filled memory allocation. */ | |
4149 | voff = 0; | |
252b5132 | 4150 | p->p_type = m->p_type; |
28a7f3e7 | 4151 | p->p_flags = m->p_flags; |
252b5132 RH |
4152 | |
4153 | if (p->p_type == PT_LOAD | |
b301b248 | 4154 | && m->count > 0) |
252b5132 | 4155 | { |
b301b248 AM |
4156 | bfd_size_type align; |
4157 | bfd_vma adjust; | |
a49e53ed | 4158 | unsigned int align_power = 0; |
b301b248 | 4159 | |
a49e53ed | 4160 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
252b5132 | 4161 | { |
a49e53ed | 4162 | unsigned int secalign; |
252b5132 | 4163 | |
a49e53ed AM |
4164 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4165 | if (secalign > align_power) | |
4166 | align_power = secalign; | |
b301b248 | 4167 | } |
a49e53ed AM |
4168 | align = (bfd_size_type) 1 << align_power; |
4169 | ||
4170 | if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > align) | |
4171 | align = bed->maxpagesize; | |
252b5132 | 4172 | |
b301b248 AM |
4173 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4174 | off += adjust; | |
4175 | if (adjust != 0 | |
4176 | && !m->includes_filehdr | |
4177 | && !m->includes_phdrs | |
4178 | && (ufile_ptr) off >= align) | |
4179 | { | |
4180 | /* If the first section isn't loadable, the same holds for | |
4181 | any other sections. Since the segment won't need file | |
4182 | space, we can make p_offset overlap some prior segment. | |
4183 | However, .tbss is special. If a segment starts with | |
4184 | .tbss, we need to look at the next section to decide | |
4185 | whether the segment has any loadable sections. */ | |
4186 | i = 0; | |
5efb6261 | 4187 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4188 | { |
4189 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4190 | || ++i >= m->count) | |
4191 | { | |
4192 | off -= adjust; | |
4193 | voff = adjust - align; | |
4194 | break; | |
4195 | } | |
4196 | } | |
252b5132 RH |
4197 | } |
4198 | } | |
b1a6d0b1 NC |
4199 | /* Make sure the .dynamic section is the first section in the |
4200 | PT_DYNAMIC segment. */ | |
4201 | else if (p->p_type == PT_DYNAMIC | |
4202 | && m->count > 1 | |
4203 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4204 | { | |
4205 | _bfd_error_handler | |
b301b248 AM |
4206 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4207 | abfd); | |
b1a6d0b1 NC |
4208 | bfd_set_error (bfd_error_bad_value); |
4209 | return FALSE; | |
4210 | } | |
252b5132 RH |
4211 | |
4212 | if (m->count == 0) | |
4213 | p->p_vaddr = 0; | |
4214 | else | |
4215 | p->p_vaddr = m->sections[0]->vma; | |
4216 | ||
4217 | if (m->p_paddr_valid) | |
4218 | p->p_paddr = m->p_paddr; | |
4219 | else if (m->count == 0) | |
4220 | p->p_paddr = 0; | |
4221 | else | |
4222 | p->p_paddr = m->sections[0]->lma; | |
4223 | ||
4224 | if (p->p_type == PT_LOAD | |
4225 | && (abfd->flags & D_PAGED) != 0) | |
4226 | p->p_align = bed->maxpagesize; | |
4227 | else if (m->count == 0) | |
45d6a902 | 4228 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4229 | else |
4230 | p->p_align = 0; | |
4231 | ||
4232 | p->p_offset = 0; | |
4233 | p->p_filesz = 0; | |
4234 | p->p_memsz = 0; | |
4235 | ||
4236 | if (m->includes_filehdr) | |
4237 | { | |
4238 | if (! m->p_flags_valid) | |
4239 | p->p_flags |= PF_R; | |
4240 | p->p_offset = 0; | |
4241 | p->p_filesz = bed->s->sizeof_ehdr; | |
4242 | p->p_memsz = bed->s->sizeof_ehdr; | |
4243 | if (m->count > 0) | |
4244 | { | |
4245 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4246 | ||
4247 | if (p->p_vaddr < (bfd_vma) off) | |
4248 | { | |
caf47ea6 | 4249 | (*_bfd_error_handler) |
b301b248 AM |
4250 | (_("%B: Not enough room for program headers, try linking with -N"), |
4251 | abfd); | |
252b5132 | 4252 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4253 | return FALSE; |
252b5132 RH |
4254 | } |
4255 | ||
4256 | p->p_vaddr -= off; | |
4257 | if (! m->p_paddr_valid) | |
4258 | p->p_paddr -= off; | |
4259 | } | |
4260 | if (p->p_type == PT_LOAD) | |
4261 | { | |
4262 | filehdr_vaddr = p->p_vaddr; | |
4263 | filehdr_paddr = p->p_paddr; | |
4264 | } | |
4265 | } | |
4266 | ||
4267 | if (m->includes_phdrs) | |
4268 | { | |
4269 | if (! m->p_flags_valid) | |
4270 | p->p_flags |= PF_R; | |
4271 | ||
4272 | if (m->includes_filehdr) | |
4273 | { | |
4274 | if (p->p_type == PT_LOAD) | |
4275 | { | |
4276 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4277 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4278 | } | |
4279 | } | |
4280 | else | |
4281 | { | |
4282 | p->p_offset = bed->s->sizeof_ehdr; | |
4283 | ||
4284 | if (m->count > 0) | |
4285 | { | |
4286 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4287 | p->p_vaddr -= off - p->p_offset; | |
4288 | if (! m->p_paddr_valid) | |
4289 | p->p_paddr -= off - p->p_offset; | |
4290 | } | |
4291 | ||
4292 | if (p->p_type == PT_LOAD) | |
4293 | { | |
4294 | phdrs_vaddr = p->p_vaddr; | |
4295 | phdrs_paddr = p->p_paddr; | |
4296 | } | |
4297 | else | |
4298 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4299 | } | |
4300 | ||
4301 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4302 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4303 | } | |
4304 | ||
4305 | if (p->p_type == PT_LOAD | |
4306 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4307 | { | |
4308 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4309 | p->p_offset = off + voff; |
252b5132 RH |
4310 | else |
4311 | { | |
4312 | file_ptr adjust; | |
4313 | ||
4314 | adjust = off - (p->p_offset + p->p_filesz); | |
4315 | p->p_filesz += adjust; | |
4316 | p->p_memsz += adjust; | |
4317 | } | |
4318 | } | |
4319 | ||
252b5132 RH |
4320 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4321 | { | |
4322 | asection *sec; | |
4323 | flagword flags; | |
4324 | bfd_size_type align; | |
4325 | ||
4326 | sec = *secpp; | |
4327 | flags = sec->flags; | |
4328 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4329 | ||
b301b248 AM |
4330 | if (p->p_type == PT_LOAD |
4331 | || p->p_type == PT_TLS) | |
252b5132 RH |
4332 | { |
4333 | bfd_signed_vma adjust; | |
4334 | ||
5efb6261 | 4335 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4336 | { |
b301b248 | 4337 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4338 | if (adjust < 0) |
b301b248 AM |
4339 | { |
4340 | (*_bfd_error_handler) | |
4341 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4342 | abfd, sec, (unsigned long) sec->lma); | |
4343 | adjust = 0; | |
4344 | } | |
4345 | off += adjust; | |
4346 | p->p_filesz += adjust; | |
4347 | p->p_memsz += adjust; | |
252b5132 | 4348 | } |
b301b248 AM |
4349 | /* .tbss is special. It doesn't contribute to p_memsz of |
4350 | normal segments. */ | |
4351 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4352 | || p->p_type == PT_TLS) | |
252b5132 RH |
4353 | { |
4354 | /* The section VMA must equal the file position | |
b301b248 AM |
4355 | modulo the page size. */ |
4356 | bfd_size_type page = align; | |
a49e53ed | 4357 | if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > page) |
b301b248 AM |
4358 | page = bed->maxpagesize; |
4359 | adjust = vma_page_aligned_bias (sec->vma, | |
4360 | p->p_vaddr + p->p_memsz, | |
4361 | page); | |
252b5132 | 4362 | p->p_memsz += adjust; |
252b5132 | 4363 | } |
252b5132 RH |
4364 | } |
4365 | ||
4366 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4367 | { | |
b301b248 AM |
4368 | /* The section at i == 0 is the one that actually contains |
4369 | everything. */ | |
4a938328 MS |
4370 | if (i == 0) |
4371 | { | |
252b5132 | 4372 | sec->filepos = off; |
eea6121a | 4373 | off += sec->size; |
b301b248 AM |
4374 | p->p_filesz = sec->size; |
4375 | p->p_memsz = 0; | |
4376 | p->p_align = 1; | |
252b5132 | 4377 | } |
4a938328 | 4378 | else |
252b5132 | 4379 | { |
b301b248 | 4380 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4381 | sec->filepos = 0; |
eea6121a | 4382 | sec->size = 0; |
b301b248 AM |
4383 | sec->flags = 0; |
4384 | continue; | |
252b5132 | 4385 | } |
252b5132 RH |
4386 | } |
4387 | else | |
4388 | { | |
b301b248 AM |
4389 | if (p->p_type == PT_LOAD) |
4390 | { | |
4391 | sec->filepos = off; | |
5efb6261 AM |
4392 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4393 | 1997, and the exact reason for it isn't clear. One | |
4394 | plausible explanation is that it is to work around | |
4395 | a problem we have with linker scripts using data | |
4396 | statements in NOLOAD sections. I don't think it | |
4397 | makes a great deal of sense to have such a section | |
4398 | assigned to a PT_LOAD segment, but apparently | |
4399 | people do this. The data statement results in a | |
4400 | bfd_data_link_order being built, and these need | |
4401 | section contents to write into. Eventually, we get | |
4402 | to _bfd_elf_write_object_contents which writes any | |
4403 | section with contents to the output. Make room | |
4404 | here for the write, so that following segments are | |
4405 | not trashed. */ | |
4406 | if ((flags & SEC_LOAD) != 0 | |
4407 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4408 | off += sec->size; |
4409 | } | |
252b5132 | 4410 | |
5efb6261 | 4411 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4412 | { |
4413 | p->p_filesz += sec->size; | |
4414 | p->p_memsz += sec->size; | |
4415 | } | |
4b6c0f2f NC |
4416 | /* PR ld/594: Sections in note segments which are not loaded |
4417 | contribute to the file size but not the in-memory size. */ | |
4418 | else if (p->p_type == PT_NOTE | |
4419 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4420 | p->p_filesz += sec->size; | |
4421 | ||
b301b248 AM |
4422 | /* .tbss is special. It doesn't contribute to p_memsz of |
4423 | normal segments. */ | |
4424 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4425 | || p->p_type == PT_TLS) | |
4426 | p->p_memsz += sec->size; | |
252b5132 | 4427 | |
13ae64f3 | 4428 | if (p->p_type == PT_TLS |
eea6121a | 4429 | && sec->size == 0 |
13ae64f3 JJ |
4430 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4431 | { | |
4432 | struct bfd_link_order *o; | |
4433 | bfd_vma tbss_size = 0; | |
4434 | ||
8423293d | 4435 | for (o = sec->map_head.link_order; o != NULL; o = o->next) |
13ae64f3 JJ |
4436 | if (tbss_size < o->offset + o->size) |
4437 | tbss_size = o->offset + o->size; | |
4438 | ||
4439 | p->p_memsz += tbss_size; | |
4440 | } | |
4441 | ||
252b5132 RH |
4442 | if (align > p->p_align |
4443 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4444 | p->p_align = align; | |
4445 | } | |
4446 | ||
4447 | if (! m->p_flags_valid) | |
4448 | { | |
4449 | p->p_flags |= PF_R; | |
4450 | if ((flags & SEC_CODE) != 0) | |
4451 | p->p_flags |= PF_X; | |
4452 | if ((flags & SEC_READONLY) == 0) | |
4453 | p->p_flags |= PF_W; | |
4454 | } | |
4455 | } | |
4456 | } | |
4457 | ||
4458 | /* Now that we have set the section file positions, we can set up | |
4459 | the file positions for the non PT_LOAD segments. */ | |
4460 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4461 | m != NULL; | |
4462 | m = m->next, p++) | |
4463 | { | |
4464 | if (p->p_type != PT_LOAD && m->count > 0) | |
4465 | { | |
4466 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4467 | /* If the section has not yet been assigned a file position, |
4468 | do so now. The ARM BPABI requires that .dynamic section | |
4469 | not be marked SEC_ALLOC because it is not part of any | |
4470 | PT_LOAD segment, so it will not be processed above. */ | |
4471 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4472 | { | |
4473 | unsigned int i; | |
4474 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4475 | ||
4476 | i = 1; | |
4477 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4478 | ++i; | |
4479 | off = (_bfd_elf_assign_file_position_for_section | |
4480 | (i_shdrpp[i], off, TRUE)); | |
4481 | p->p_filesz = m->sections[0]->size; | |
4482 | } | |
252b5132 RH |
4483 | p->p_offset = m->sections[0]->filepos; |
4484 | } | |
4485 | if (m->count == 0) | |
4486 | { | |
4487 | if (m->includes_filehdr) | |
4488 | { | |
4489 | p->p_vaddr = filehdr_vaddr; | |
4490 | if (! m->p_paddr_valid) | |
4491 | p->p_paddr = filehdr_paddr; | |
4492 | } | |
4493 | else if (m->includes_phdrs) | |
4494 | { | |
4495 | p->p_vaddr = phdrs_vaddr; | |
4496 | if (! m->p_paddr_valid) | |
4497 | p->p_paddr = phdrs_paddr; | |
4498 | } | |
8c37241b JJ |
4499 | else if (p->p_type == PT_GNU_RELRO) |
4500 | { | |
4501 | Elf_Internal_Phdr *lp; | |
4502 | ||
4503 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4504 | { | |
4505 | if (lp->p_type == PT_LOAD | |
4506 | && lp->p_vaddr <= link_info->relro_end | |
4507 | && lp->p_vaddr >= link_info->relro_start | |
4508 | && lp->p_vaddr + lp->p_filesz | |
4509 | >= link_info->relro_end) | |
4510 | break; | |
4511 | } | |
4512 | ||
4513 | if (lp < phdrs + count | |
4514 | && link_info->relro_end > lp->p_vaddr) | |
4515 | { | |
4516 | p->p_vaddr = lp->p_vaddr; | |
4517 | p->p_paddr = lp->p_paddr; | |
4518 | p->p_offset = lp->p_offset; | |
4519 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4520 | p->p_memsz = p->p_filesz; | |
4521 | p->p_align = 1; | |
4522 | p->p_flags = (lp->p_flags & ~PF_W); | |
4523 | } | |
4524 | else | |
4525 | { | |
4526 | memset (p, 0, sizeof *p); | |
4527 | p->p_type = PT_NULL; | |
4528 | } | |
4529 | } | |
252b5132 RH |
4530 | } |
4531 | } | |
4532 | ||
4533 | /* Clear out any program headers we allocated but did not use. */ | |
4534 | for (; count < alloc; count++, p++) | |
4535 | { | |
4536 | memset (p, 0, sizeof *p); | |
4537 | p->p_type = PT_NULL; | |
4538 | } | |
4539 | ||
4540 | elf_tdata (abfd)->phdr = phdrs; | |
4541 | ||
4542 | elf_tdata (abfd)->next_file_pos = off; | |
4543 | ||
4544 | /* Write out the program headers. */ | |
dc810e39 | 4545 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4546 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4547 | return FALSE; |
252b5132 | 4548 | |
b34976b6 | 4549 | return TRUE; |
252b5132 RH |
4550 | } |
4551 | ||
4552 | /* Get the size of the program header. | |
4553 | ||
4554 | If this is called by the linker before any of the section VMA's are set, it | |
4555 | can't calculate the correct value for a strange memory layout. This only | |
4556 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4557 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4558 | data segment (exclusive of .interp and .dynamic). | |
4559 | ||
4560 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4561 | will be two segments. */ | |
4562 | ||
4563 | static bfd_size_type | |
217aa764 | 4564 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4565 | { |
4566 | size_t segs; | |
4567 | asection *s; | |
9c5bfbb7 | 4568 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4569 | |
4570 | /* We can't return a different result each time we're called. */ | |
4571 | if (elf_tdata (abfd)->program_header_size != 0) | |
4572 | return elf_tdata (abfd)->program_header_size; | |
4573 | ||
4574 | if (elf_tdata (abfd)->segment_map != NULL) | |
4575 | { | |
4576 | struct elf_segment_map *m; | |
4577 | ||
4578 | segs = 0; | |
4579 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4580 | ++segs; | |
4581 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4582 | return elf_tdata (abfd)->program_header_size; | |
4583 | } | |
4584 | ||
4585 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4586 | and one for data. */ | |
4587 | segs = 2; | |
4588 | ||
4589 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4590 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4591 | { | |
4592 | /* If we have a loadable interpreter section, we need a | |
4593 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4594 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4595 | targets. */ |
4596 | segs += 2; | |
4597 | } | |
4598 | ||
4599 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4600 | { | |
4601 | /* We need a PT_DYNAMIC segment. */ | |
4602 | ++segs; | |
4603 | } | |
4604 | ||
126495ed | 4605 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4606 | { |
4607 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4608 | ++segs; | |
4609 | } | |
4610 | ||
9ee5e499 JJ |
4611 | if (elf_tdata (abfd)->stack_flags) |
4612 | { | |
4613 | /* We need a PT_GNU_STACK segment. */ | |
4614 | ++segs; | |
4615 | } | |
4616 | ||
8c37241b JJ |
4617 | if (elf_tdata (abfd)->relro) |
4618 | { | |
4619 | /* We need a PT_GNU_RELRO segment. */ | |
4620 | ++segs; | |
4621 | } | |
4622 | ||
252b5132 RH |
4623 | for (s = abfd->sections; s != NULL; s = s->next) |
4624 | { | |
4625 | if ((s->flags & SEC_LOAD) != 0 | |
4626 | && strncmp (s->name, ".note", 5) == 0) | |
4627 | { | |
4628 | /* We need a PT_NOTE segment. */ | |
4629 | ++segs; | |
4630 | } | |
4631 | } | |
4632 | ||
13ae64f3 JJ |
4633 | for (s = abfd->sections; s != NULL; s = s->next) |
4634 | { | |
4635 | if (s->flags & SEC_THREAD_LOCAL) | |
4636 | { | |
4637 | /* We need a PT_TLS segment. */ | |
4638 | ++segs; | |
4639 | break; | |
4640 | } | |
4641 | } | |
4642 | ||
252b5132 RH |
4643 | /* Let the backend count up any program headers it might need. */ |
4644 | if (bed->elf_backend_additional_program_headers) | |
4645 | { | |
4646 | int a; | |
4647 | ||
4648 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4649 | if (a == -1) | |
4650 | abort (); | |
4651 | segs += a; | |
4652 | } | |
4653 | ||
4654 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4655 | return elf_tdata (abfd)->program_header_size; | |
4656 | } | |
4657 | ||
4658 | /* Work out the file positions of all the sections. This is called by | |
4659 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4660 | VMAs must be known before this is called. | |
4661 | ||
e0638f70 AM |
4662 | Reloc sections come in two flavours: Those processed specially as |
4663 | "side-channel" data attached to a section to which they apply, and | |
4664 | those that bfd doesn't process as relocations. The latter sort are | |
4665 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4666 | consider the former sort here, unless they form part of the loadable | |
4667 | image. Reloc sections not assigned here will be handled later by | |
4668 | assign_file_positions_for_relocs. | |
252b5132 RH |
4669 | |
4670 | We also don't set the positions of the .symtab and .strtab here. */ | |
4671 | ||
b34976b6 | 4672 | static bfd_boolean |
c84fca4d AO |
4673 | assign_file_positions_except_relocs (bfd *abfd, |
4674 | struct bfd_link_info *link_info) | |
252b5132 RH |
4675 | { |
4676 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4677 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4678 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4679 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4680 | file_ptr off; |
9c5bfbb7 | 4681 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4682 | |
4683 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4684 | && bfd_get_format (abfd) != bfd_core) | |
4685 | { | |
4686 | Elf_Internal_Shdr **hdrpp; | |
4687 | unsigned int i; | |
4688 | ||
4689 | /* Start after the ELF header. */ | |
4690 | off = i_ehdrp->e_ehsize; | |
4691 | ||
4692 | /* We are not creating an executable, which means that we are | |
4693 | not creating a program header, and that the actual order of | |
4694 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4695 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4696 | { |
4697 | Elf_Internal_Shdr *hdr; | |
4698 | ||
4699 | hdr = *hdrpp; | |
e0638f70 AM |
4700 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4701 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4702 | || i == tdata->symtab_section |
4703 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4704 | || i == tdata->strtab_section) |
4705 | { | |
4706 | hdr->sh_offset = -1; | |
252b5132 | 4707 | } |
9ad5cbcf | 4708 | else |
b34976b6 | 4709 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4710 | |
9ad5cbcf AM |
4711 | if (i == SHN_LORESERVE - 1) |
4712 | { | |
4713 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4714 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4715 | } | |
252b5132 RH |
4716 | } |
4717 | } | |
4718 | else | |
4719 | { | |
4720 | unsigned int i; | |
4721 | Elf_Internal_Shdr **hdrpp; | |
4722 | ||
4723 | /* Assign file positions for the loaded sections based on the | |
4724 | assignment of sections to segments. */ | |
c84fca4d | 4725 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4726 | return FALSE; |
252b5132 RH |
4727 | |
4728 | /* Assign file positions for the other sections. */ | |
4729 | ||
4730 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4731 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4732 | { |
4733 | Elf_Internal_Shdr *hdr; | |
4734 | ||
4735 | hdr = *hdrpp; | |
4736 | if (hdr->bfd_section != NULL | |
4737 | && hdr->bfd_section->filepos != 0) | |
4738 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4739 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4740 | { | |
4741 | ((*_bfd_error_handler) | |
b301b248 AM |
4742 | (_("%B: warning: allocated section `%s' not in segment"), |
4743 | abfd, | |
252b5132 RH |
4744 | (hdr->bfd_section == NULL |
4745 | ? "*unknown*" | |
4746 | : hdr->bfd_section->name))); | |
4747 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4748 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4749 | bed->maxpagesize); | |
252b5132 | 4750 | else |
340b6d91 AC |
4751 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4752 | hdr->sh_addralign); | |
252b5132 | 4753 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4754 | FALSE); |
252b5132 | 4755 | } |
e0638f70 AM |
4756 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4757 | && hdr->bfd_section == NULL) | |
252b5132 | 4758 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4759 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4760 | || hdr == i_shdrpp[tdata->strtab_section]) |
4761 | hdr->sh_offset = -1; | |
4762 | else | |
b34976b6 | 4763 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4764 | |
4765 | if (i == SHN_LORESERVE - 1) | |
4766 | { | |
4767 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4768 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4769 | } | |
252b5132 RH |
4770 | } |
4771 | } | |
4772 | ||
4773 | /* Place the section headers. */ | |
45d6a902 | 4774 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4775 | i_ehdrp->e_shoff = off; |
4776 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4777 | ||
4778 | elf_tdata (abfd)->next_file_pos = off; | |
4779 | ||
b34976b6 | 4780 | return TRUE; |
252b5132 RH |
4781 | } |
4782 | ||
b34976b6 | 4783 | static bfd_boolean |
217aa764 | 4784 | prep_headers (bfd *abfd) |
252b5132 RH |
4785 | { |
4786 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4787 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4788 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4789 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4790 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4791 | |
4792 | i_ehdrp = elf_elfheader (abfd); | |
4793 | i_shdrp = elf_elfsections (abfd); | |
4794 | ||
2b0f7ef9 | 4795 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4796 | if (shstrtab == NULL) |
b34976b6 | 4797 | return FALSE; |
252b5132 RH |
4798 | |
4799 | elf_shstrtab (abfd) = shstrtab; | |
4800 | ||
4801 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4802 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4803 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4804 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4805 | ||
4806 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4807 | i_ehdrp->e_ident[EI_DATA] = | |
4808 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4809 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4810 | ||
252b5132 RH |
4811 | if ((abfd->flags & DYNAMIC) != 0) |
4812 | i_ehdrp->e_type = ET_DYN; | |
4813 | else if ((abfd->flags & EXEC_P) != 0) | |
4814 | i_ehdrp->e_type = ET_EXEC; | |
4815 | else if (bfd_get_format (abfd) == bfd_core) | |
4816 | i_ehdrp->e_type = ET_CORE; | |
4817 | else | |
4818 | i_ehdrp->e_type = ET_REL; | |
4819 | ||
4820 | switch (bfd_get_arch (abfd)) | |
4821 | { | |
4822 | case bfd_arch_unknown: | |
4823 | i_ehdrp->e_machine = EM_NONE; | |
4824 | break; | |
aa4f99bb AO |
4825 | |
4826 | /* There used to be a long list of cases here, each one setting | |
4827 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4828 | in the corresponding bfd definition. To avoid duplication, | |
4829 | the switch was removed. Machines that need special handling | |
4830 | can generally do it in elf_backend_final_write_processing(), | |
4831 | unless they need the information earlier than the final write. | |
4832 | Such need can generally be supplied by replacing the tests for | |
4833 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4834 | default: |
9c5bfbb7 AM |
4835 | i_ehdrp->e_machine = bed->elf_machine_code; |
4836 | } | |
aa4f99bb | 4837 | |
252b5132 RH |
4838 | i_ehdrp->e_version = bed->s->ev_current; |
4839 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4840 | ||
c044fabd | 4841 | /* No program header, for now. */ |
252b5132 RH |
4842 | i_ehdrp->e_phoff = 0; |
4843 | i_ehdrp->e_phentsize = 0; | |
4844 | i_ehdrp->e_phnum = 0; | |
4845 | ||
c044fabd | 4846 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4847 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4848 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4849 | ||
c044fabd | 4850 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4851 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4852 | /* It all happens later. */ |
4853 | ; | |
252b5132 RH |
4854 | else |
4855 | { | |
4856 | i_ehdrp->e_phentsize = 0; | |
4857 | i_phdrp = 0; | |
4858 | i_ehdrp->e_phoff = 0; | |
4859 | } | |
4860 | ||
4861 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4862 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4863 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4864 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4865 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4866 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4867 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4868 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4869 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4870 | return FALSE; |
252b5132 | 4871 | |
b34976b6 | 4872 | return TRUE; |
252b5132 RH |
4873 | } |
4874 | ||
4875 | /* Assign file positions for all the reloc sections which are not part | |
4876 | of the loadable file image. */ | |
4877 | ||
4878 | void | |
217aa764 | 4879 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4880 | { |
4881 | file_ptr off; | |
9ad5cbcf | 4882 | unsigned int i, num_sec; |
252b5132 RH |
4883 | Elf_Internal_Shdr **shdrpp; |
4884 | ||
4885 | off = elf_tdata (abfd)->next_file_pos; | |
4886 | ||
9ad5cbcf AM |
4887 | num_sec = elf_numsections (abfd); |
4888 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4889 | { |
4890 | Elf_Internal_Shdr *shdrp; | |
4891 | ||
4892 | shdrp = *shdrpp; | |
4893 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4894 | && shdrp->sh_offset == -1) | |
b34976b6 | 4895 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4896 | } |
4897 | ||
4898 | elf_tdata (abfd)->next_file_pos = off; | |
4899 | } | |
4900 | ||
b34976b6 | 4901 | bfd_boolean |
217aa764 | 4902 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4903 | { |
9c5bfbb7 | 4904 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4905 | Elf_Internal_Ehdr *i_ehdrp; |
4906 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4907 | bfd_boolean failed; |
9ad5cbcf | 4908 | unsigned int count, num_sec; |
252b5132 RH |
4909 | |
4910 | if (! abfd->output_has_begun | |
217aa764 | 4911 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4912 | return FALSE; |
252b5132 RH |
4913 | |
4914 | i_shdrp = elf_elfsections (abfd); | |
4915 | i_ehdrp = elf_elfheader (abfd); | |
4916 | ||
b34976b6 | 4917 | failed = FALSE; |
252b5132 RH |
4918 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4919 | if (failed) | |
b34976b6 | 4920 | return FALSE; |
252b5132 RH |
4921 | |
4922 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4923 | ||
c044fabd | 4924 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4925 | num_sec = elf_numsections (abfd); |
4926 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4927 | { |
4928 | if (bed->elf_backend_section_processing) | |
4929 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4930 | if (i_shdrp[count]->contents) | |
4931 | { | |
dc810e39 AM |
4932 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4933 | ||
252b5132 | 4934 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4935 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4936 | return FALSE; |
252b5132 | 4937 | } |
9ad5cbcf AM |
4938 | if (count == SHN_LORESERVE - 1) |
4939 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4940 | } |
4941 | ||
4942 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4943 | if (elf_shstrtab (abfd) != NULL |
4944 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
4945 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 4946 | return FALSE; |
252b5132 RH |
4947 | |
4948 | if (bed->elf_backend_final_write_processing) | |
4949 | (*bed->elf_backend_final_write_processing) (abfd, | |
4950 | elf_tdata (abfd)->linker); | |
4951 | ||
4952 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4953 | } | |
4954 | ||
b34976b6 | 4955 | bfd_boolean |
217aa764 | 4956 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4957 | { |
c044fabd | 4958 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4959 | return _bfd_elf_write_object_contents (abfd); |
4960 | } | |
c044fabd KH |
4961 | |
4962 | /* Given a section, search the header to find them. */ | |
4963 | ||
252b5132 | 4964 | int |
198beae2 | 4965 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4966 | { |
9c5bfbb7 | 4967 | const struct elf_backend_data *bed; |
252b5132 | 4968 | int index; |
252b5132 | 4969 | |
9ad5cbcf AM |
4970 | if (elf_section_data (asect) != NULL |
4971 | && elf_section_data (asect)->this_idx != 0) | |
4972 | return elf_section_data (asect)->this_idx; | |
4973 | ||
4974 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4975 | index = SHN_ABS; |
4976 | else if (bfd_is_com_section (asect)) | |
4977 | index = SHN_COMMON; | |
4978 | else if (bfd_is_und_section (asect)) | |
4979 | index = SHN_UNDEF; | |
4980 | else | |
6dc132d9 | 4981 | index = -1; |
252b5132 | 4982 | |
af746e92 | 4983 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4984 | if (bed->elf_backend_section_from_bfd_section) |
4985 | { | |
af746e92 | 4986 | int retval = index; |
9ad5cbcf | 4987 | |
af746e92 AM |
4988 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4989 | return retval; | |
252b5132 RH |
4990 | } |
4991 | ||
af746e92 AM |
4992 | if (index == -1) |
4993 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4994 | |
af746e92 | 4995 | return index; |
252b5132 RH |
4996 | } |
4997 | ||
4998 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4999 | on error. */ | |
5000 | ||
5001 | int | |
217aa764 | 5002 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5003 | { |
5004 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5005 | int idx; | |
5006 | flagword flags = asym_ptr->flags; | |
5007 | ||
5008 | /* When gas creates relocations against local labels, it creates its | |
5009 | own symbol for the section, but does put the symbol into the | |
5010 | symbol chain, so udata is 0. When the linker is generating | |
5011 | relocatable output, this section symbol may be for one of the | |
5012 | input sections rather than the output section. */ | |
5013 | if (asym_ptr->udata.i == 0 | |
5014 | && (flags & BSF_SECTION_SYM) | |
5015 | && asym_ptr->section) | |
5016 | { | |
5017 | int indx; | |
5018 | ||
5019 | if (asym_ptr->section->output_section != NULL) | |
5020 | indx = asym_ptr->section->output_section->index; | |
5021 | else | |
5022 | indx = asym_ptr->section->index; | |
4e89ac30 L |
5023 | if (indx < elf_num_section_syms (abfd) |
5024 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
5025 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5026 | } | |
5027 | ||
5028 | idx = asym_ptr->udata.i; | |
5029 | ||
5030 | if (idx == 0) | |
5031 | { | |
5032 | /* This case can occur when using --strip-symbol on a symbol | |
5033 | which is used in a relocation entry. */ | |
5034 | (*_bfd_error_handler) | |
d003868e AM |
5035 | (_("%B: symbol `%s' required but not present"), |
5036 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5037 | bfd_set_error (bfd_error_no_symbols); |
5038 | return -1; | |
5039 | } | |
5040 | ||
5041 | #if DEBUG & 4 | |
5042 | { | |
5043 | fprintf (stderr, | |
661a3fd4 | 5044 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5045 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5046 | elf_symbol_flags (flags)); | |
5047 | fflush (stderr); | |
5048 | } | |
5049 | #endif | |
5050 | ||
5051 | return idx; | |
5052 | } | |
5053 | ||
5054 | /* Copy private BFD data. This copies any program header information. */ | |
5055 | ||
b34976b6 | 5056 | static bfd_boolean |
217aa764 | 5057 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 5058 | { |
b34976b6 AM |
5059 | Elf_Internal_Ehdr *iehdr; |
5060 | struct elf_segment_map *map; | |
5061 | struct elf_segment_map *map_first; | |
5062 | struct elf_segment_map **pointer_to_map; | |
5063 | Elf_Internal_Phdr *segment; | |
5064 | asection *section; | |
5065 | unsigned int i; | |
5066 | unsigned int num_segments; | |
5067 | bfd_boolean phdr_included = FALSE; | |
5068 | bfd_vma maxpagesize; | |
5069 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5070 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5071 | const struct elf_backend_data *bed; |
bc67d8a6 | 5072 | |
c044fabd | 5073 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 5074 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 5075 | return TRUE; |
252b5132 RH |
5076 | |
5077 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 5078 | return TRUE; |
252b5132 | 5079 | |
caf47ea6 | 5080 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5081 | iehdr = elf_elfheader (ibfd); |
5082 | ||
bc67d8a6 | 5083 | map_first = NULL; |
c044fabd | 5084 | pointer_to_map = &map_first; |
252b5132 RH |
5085 | |
5086 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5087 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5088 | ||
5089 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5090 | #define SEGMENT_END(segment, start) \ |
5091 | (start + (segment->p_memsz > segment->p_filesz \ | |
5092 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5093 | |
eecdbe52 JJ |
5094 | #define SECTION_SIZE(section, segment) \ |
5095 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5096 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5097 | ? section->size : 0) |
eecdbe52 | 5098 | |
b34976b6 | 5099 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5100 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5101 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5102 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5103 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5104 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5105 | |
b34976b6 | 5106 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5107 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5108 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5109 | (section->lma >= base \ | |
eecdbe52 | 5110 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5111 | <= SEGMENT_END (segment, base))) |
252b5132 | 5112 | |
c044fabd | 5113 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5114 | #define IS_COREFILE_NOTE(p, s) \ |
5115 | (p->p_type == PT_NOTE \ | |
5116 | && bfd_get_format (ibfd) == bfd_core \ | |
5117 | && s->vma == 0 && s->lma == 0 \ | |
5118 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5119 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5120 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5121 | |
5122 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5123 | linker, which generates a PT_INTERP section with p_vaddr and | |
5124 | p_memsz set to 0. */ | |
aecc8f8a AM |
5125 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5126 | (p->p_vaddr == 0 \ | |
5127 | && p->p_paddr == 0 \ | |
5128 | && p->p_memsz == 0 \ | |
5129 | && p->p_filesz > 0 \ | |
5130 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5131 | && s->size > 0 \ |
aecc8f8a | 5132 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5133 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5134 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5135 | |
bc67d8a6 NC |
5136 | /* Decide if the given section should be included in the given segment. |
5137 | A section will be included if: | |
f5ffc919 NC |
5138 | 1. It is within the address space of the segment -- we use the LMA |
5139 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5140 | 2. It is an allocated segment, |
5141 | 3. There is an output section associated with it, | |
eecdbe52 | 5142 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5143 | 5. PT_GNU_STACK segments do not include any sections. |
5144 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5145 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5146 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5147 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5148 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5149 | ((((segment->p_paddr \ |
5150 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5151 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5152 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5153 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5154 | && section->output_section != NULL \ |
03394ac9 | 5155 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5156 | && (segment->p_type != PT_TLS \ |
5157 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5158 | && (segment->p_type == PT_LOAD \ | |
5159 | || segment->p_type == PT_TLS \ | |
5160 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5161 | && (segment->p_type != PT_DYNAMIC \ |
5162 | || SECTION_SIZE (section, segment) > 0 \ | |
5163 | || (segment->p_paddr \ | |
5164 | ? segment->p_paddr != section->lma \ | |
5165 | : segment->p_vaddr != section->vma) \ | |
5166 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5167 | == 0)) \ | |
82e51918 | 5168 | && ! section->segment_mark) |
bc67d8a6 | 5169 | |
b34976b6 | 5170 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5171 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5172 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5173 | ||
5174 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5175 | their VMA address ranges and their LMA address ranges overlap. | |
5176 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5177 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5178 | to the same VMA range, but with the .data section mapped to a different | |
5179 | LMA. */ | |
aecc8f8a | 5180 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5181 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5182 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5183 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5184 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5185 | |
5186 | /* Initialise the segment mark field. */ | |
5187 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5188 | section->segment_mark = FALSE; |
bc67d8a6 | 5189 | |
252b5132 | 5190 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5191 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5192 | in the loadable segments. These can be created by weird |
aecc8f8a | 5193 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5194 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5195 | i < num_segments; | |
c044fabd | 5196 | i++, segment++) |
252b5132 | 5197 | { |
252b5132 | 5198 | unsigned int j; |
c044fabd | 5199 | Elf_Internal_Phdr *segment2; |
252b5132 | 5200 | |
aecc8f8a AM |
5201 | if (segment->p_type == PT_INTERP) |
5202 | for (section = ibfd->sections; section; section = section->next) | |
5203 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5204 | { | |
5205 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5206 | assignment code will work. */ |
aecc8f8a AM |
5207 | segment->p_vaddr = section->vma; |
5208 | break; | |
5209 | } | |
5210 | ||
bc67d8a6 NC |
5211 | if (segment->p_type != PT_LOAD) |
5212 | continue; | |
c044fabd | 5213 | |
bc67d8a6 | 5214 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5215 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5216 | { |
5217 | bfd_signed_vma extra_length; | |
c044fabd | 5218 | |
bc67d8a6 NC |
5219 | if (segment2->p_type != PT_LOAD |
5220 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5221 | continue; | |
c044fabd | 5222 | |
bc67d8a6 NC |
5223 | /* Merge the two segments together. */ |
5224 | if (segment2->p_vaddr < segment->p_vaddr) | |
5225 | { | |
c044fabd KH |
5226 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5227 | SEGMENT. */ | |
bc67d8a6 NC |
5228 | extra_length = |
5229 | SEGMENT_END (segment, segment->p_vaddr) | |
5230 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5231 | |
bc67d8a6 NC |
5232 | if (extra_length > 0) |
5233 | { | |
5234 | segment2->p_memsz += extra_length; | |
5235 | segment2->p_filesz += extra_length; | |
5236 | } | |
c044fabd | 5237 | |
bc67d8a6 | 5238 | segment->p_type = PT_NULL; |
c044fabd | 5239 | |
bc67d8a6 NC |
5240 | /* Since we have deleted P we must restart the outer loop. */ |
5241 | i = 0; | |
5242 | segment = elf_tdata (ibfd)->phdr; | |
5243 | break; | |
5244 | } | |
5245 | else | |
5246 | { | |
c044fabd KH |
5247 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5248 | SEGMENT2. */ | |
bc67d8a6 NC |
5249 | extra_length = |
5250 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5251 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5252 | |
bc67d8a6 NC |
5253 | if (extra_length > 0) |
5254 | { | |
5255 | segment->p_memsz += extra_length; | |
5256 | segment->p_filesz += extra_length; | |
5257 | } | |
c044fabd | 5258 | |
bc67d8a6 NC |
5259 | segment2->p_type = PT_NULL; |
5260 | } | |
5261 | } | |
5262 | } | |
c044fabd | 5263 | |
bc67d8a6 NC |
5264 | /* The second scan attempts to assign sections to segments. */ |
5265 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5266 | i < num_segments; | |
5267 | i ++, segment ++) | |
5268 | { | |
5269 | unsigned int section_count; | |
5270 | asection ** sections; | |
5271 | asection * output_section; | |
5272 | unsigned int isec; | |
5273 | bfd_vma matching_lma; | |
5274 | bfd_vma suggested_lma; | |
5275 | unsigned int j; | |
dc810e39 | 5276 | bfd_size_type amt; |
bc67d8a6 NC |
5277 | |
5278 | if (segment->p_type == PT_NULL) | |
5279 | continue; | |
c044fabd | 5280 | |
bc67d8a6 | 5281 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5282 | for (section = ibfd->sections, section_count = 0; |
5283 | section != NULL; | |
5284 | section = section->next) | |
caf47ea6 | 5285 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5286 | ++section_count; |
811072d8 | 5287 | |
b5f852ea NC |
5288 | /* Allocate a segment map big enough to contain |
5289 | all of the sections we have selected. */ | |
dc810e39 AM |
5290 | amt = sizeof (struct elf_segment_map); |
5291 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5292 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5293 | if (map == NULL) |
b34976b6 | 5294 | return FALSE; |
252b5132 RH |
5295 | |
5296 | /* Initialise the fields of the segment map. Default to | |
5297 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5298 | map->next = NULL; |
5299 | map->p_type = segment->p_type; | |
5300 | map->p_flags = segment->p_flags; | |
5301 | map->p_flags_valid = 1; | |
5302 | map->p_paddr = segment->p_paddr; | |
5303 | map->p_paddr_valid = 1; | |
252b5132 RH |
5304 | |
5305 | /* Determine if this segment contains the ELF file header | |
5306 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5307 | map->includes_filehdr = (segment->p_offset == 0 |
5308 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5309 | |
bc67d8a6 | 5310 | map->includes_phdrs = 0; |
252b5132 | 5311 | |
bc67d8a6 | 5312 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5313 | { |
bc67d8a6 NC |
5314 | map->includes_phdrs = |
5315 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5316 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5317 | >= ((bfd_vma) iehdr->e_phoff |
5318 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5319 | |
bc67d8a6 | 5320 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5321 | phdr_included = TRUE; |
252b5132 RH |
5322 | } |
5323 | ||
bc67d8a6 | 5324 | if (section_count == 0) |
252b5132 RH |
5325 | { |
5326 | /* Special segments, such as the PT_PHDR segment, may contain | |
5327 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5328 | something. They are allowed by the ELF spec however, so only |
5329 | a warning is produced. */ | |
bc67d8a6 | 5330 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5331 | (*_bfd_error_handler) |
d003868e AM |
5332 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5333 | ibfd); | |
252b5132 | 5334 | |
bc67d8a6 | 5335 | map->count = 0; |
c044fabd KH |
5336 | *pointer_to_map = map; |
5337 | pointer_to_map = &map->next; | |
252b5132 RH |
5338 | |
5339 | continue; | |
5340 | } | |
5341 | ||
5342 | /* Now scan the sections in the input BFD again and attempt | |
5343 | to add their corresponding output sections to the segment map. | |
5344 | The problem here is how to handle an output section which has | |
5345 | been moved (ie had its LMA changed). There are four possibilities: | |
5346 | ||
5347 | 1. None of the sections have been moved. | |
5348 | In this case we can continue to use the segment LMA from the | |
5349 | input BFD. | |
5350 | ||
5351 | 2. All of the sections have been moved by the same amount. | |
5352 | In this case we can change the segment's LMA to match the LMA | |
5353 | of the first section. | |
5354 | ||
5355 | 3. Some of the sections have been moved, others have not. | |
5356 | In this case those sections which have not been moved can be | |
5357 | placed in the current segment which will have to have its size, | |
5358 | and possibly its LMA changed, and a new segment or segments will | |
5359 | have to be created to contain the other sections. | |
5360 | ||
b5f852ea | 5361 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5362 | In this case we can change the segment's LMA to match the LMA |
5363 | of the first section and we will have to create a new segment | |
5364 | or segments to contain the other sections. | |
5365 | ||
5366 | In order to save time, we allocate an array to hold the section | |
5367 | pointers that we are interested in. As these sections get assigned | |
5368 | to a segment, they are removed from this array. */ | |
5369 | ||
0b14c2aa L |
5370 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5371 | to work around this long long bug. */ | |
d0fb9a8d | 5372 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5373 | if (sections == NULL) |
b34976b6 | 5374 | return FALSE; |
252b5132 RH |
5375 | |
5376 | /* Step One: Scan for segment vs section LMA conflicts. | |
5377 | Also add the sections to the section array allocated above. | |
5378 | Also add the sections to the current segment. In the common | |
5379 | case, where the sections have not been moved, this means that | |
5380 | we have completely filled the segment, and there is nothing | |
5381 | more to do. */ | |
252b5132 | 5382 | isec = 0; |
72730e0c | 5383 | matching_lma = 0; |
252b5132 RH |
5384 | suggested_lma = 0; |
5385 | ||
bc67d8a6 NC |
5386 | for (j = 0, section = ibfd->sections; |
5387 | section != NULL; | |
5388 | section = section->next) | |
252b5132 | 5389 | { |
caf47ea6 | 5390 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5391 | { |
bc67d8a6 NC |
5392 | output_section = section->output_section; |
5393 | ||
5394 | sections[j ++] = section; | |
252b5132 RH |
5395 | |
5396 | /* The Solaris native linker always sets p_paddr to 0. | |
5397 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5398 | correct value. Note - some backends require that |
5399 | p_paddr be left as zero. */ | |
bc67d8a6 | 5400 | if (segment->p_paddr == 0 |
4455705d | 5401 | && segment->p_vaddr != 0 |
5e8d7549 | 5402 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5403 | && isec == 0 |
bc67d8a6 NC |
5404 | && output_section->lma != 0 |
5405 | && (output_section->vma == (segment->p_vaddr | |
5406 | + (map->includes_filehdr | |
5407 | ? iehdr->e_ehsize | |
5408 | : 0) | |
5409 | + (map->includes_phdrs | |
079e9a2f AM |
5410 | ? (iehdr->e_phnum |
5411 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5412 | : 0)))) |
5413 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5414 | |
5415 | /* Match up the physical address of the segment with the | |
5416 | LMA address of the output section. */ | |
bc67d8a6 | 5417 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5418 | || IS_COREFILE_NOTE (segment, section) |
5419 | || (bed->want_p_paddr_set_to_zero && | |
5420 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5421 | ) | |
252b5132 RH |
5422 | { |
5423 | if (matching_lma == 0) | |
bc67d8a6 | 5424 | matching_lma = output_section->lma; |
252b5132 RH |
5425 | |
5426 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5427 | then it does not overlap any other section within that |
252b5132 | 5428 | segment. */ |
bc67d8a6 | 5429 | map->sections[isec ++] = output_section; |
252b5132 RH |
5430 | } |
5431 | else if (suggested_lma == 0) | |
bc67d8a6 | 5432 | suggested_lma = output_section->lma; |
252b5132 RH |
5433 | } |
5434 | } | |
5435 | ||
bc67d8a6 | 5436 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5437 | |
5438 | /* Step Two: Adjust the physical address of the current segment, | |
5439 | if necessary. */ | |
bc67d8a6 | 5440 | if (isec == section_count) |
252b5132 RH |
5441 | { |
5442 | /* All of the sections fitted within the segment as currently | |
5443 | specified. This is the default case. Add the segment to | |
5444 | the list of built segments and carry on to process the next | |
5445 | program header in the input BFD. */ | |
bc67d8a6 | 5446 | map->count = section_count; |
c044fabd KH |
5447 | *pointer_to_map = map; |
5448 | pointer_to_map = &map->next; | |
252b5132 RH |
5449 | |
5450 | free (sections); | |
5451 | continue; | |
5452 | } | |
252b5132 RH |
5453 | else |
5454 | { | |
72730e0c AM |
5455 | if (matching_lma != 0) |
5456 | { | |
5457 | /* At least one section fits inside the current segment. | |
5458 | Keep it, but modify its physical address to match the | |
5459 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5460 | map->p_paddr = matching_lma; |
72730e0c AM |
5461 | } |
5462 | else | |
5463 | { | |
5464 | /* None of the sections fitted inside the current segment. | |
5465 | Change the current segment's physical address to match | |
5466 | the LMA of the first section. */ | |
bc67d8a6 | 5467 | map->p_paddr = suggested_lma; |
72730e0c AM |
5468 | } |
5469 | ||
bc67d8a6 NC |
5470 | /* Offset the segment physical address from the lma |
5471 | to allow for space taken up by elf headers. */ | |
5472 | if (map->includes_filehdr) | |
5473 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5474 | |
bc67d8a6 NC |
5475 | if (map->includes_phdrs) |
5476 | { | |
5477 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5478 | ||
5479 | /* iehdr->e_phnum is just an estimate of the number | |
5480 | of program headers that we will need. Make a note | |
5481 | here of the number we used and the segment we chose | |
5482 | to hold these headers, so that we can adjust the | |
5483 | offset when we know the correct value. */ | |
5484 | phdr_adjust_num = iehdr->e_phnum; | |
5485 | phdr_adjust_seg = map; | |
5486 | } | |
252b5132 RH |
5487 | } |
5488 | ||
5489 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5490 | those that fit to the current segment and removing them from the |
252b5132 RH |
5491 | sections array; but making sure not to leave large gaps. Once all |
5492 | possible sections have been assigned to the current segment it is | |
5493 | added to the list of built segments and if sections still remain | |
5494 | to be assigned, a new segment is constructed before repeating | |
5495 | the loop. */ | |
5496 | isec = 0; | |
5497 | do | |
5498 | { | |
bc67d8a6 | 5499 | map->count = 0; |
252b5132 RH |
5500 | suggested_lma = 0; |
5501 | ||
5502 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5503 | for (j = 0; j < section_count; j++) |
252b5132 | 5504 | { |
bc67d8a6 | 5505 | section = sections[j]; |
252b5132 | 5506 | |
bc67d8a6 | 5507 | if (section == NULL) |
252b5132 RH |
5508 | continue; |
5509 | ||
bc67d8a6 | 5510 | output_section = section->output_section; |
252b5132 | 5511 | |
bc67d8a6 | 5512 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5513 | |
bc67d8a6 NC |
5514 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5515 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5516 | { |
bc67d8a6 | 5517 | if (map->count == 0) |
252b5132 RH |
5518 | { |
5519 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5520 | the beginning of the segment, then something is |
5521 | wrong. */ | |
5522 | if (output_section->lma != | |
5523 | (map->p_paddr | |
5524 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5525 | + (map->includes_phdrs | |
5526 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5527 | : 0))) | |
252b5132 RH |
5528 | abort (); |
5529 | } | |
5530 | else | |
5531 | { | |
5532 | asection * prev_sec; | |
252b5132 | 5533 | |
bc67d8a6 | 5534 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5535 | |
5536 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5537 | and the start of this section is more than |
5538 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5539 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5540 | maxpagesize) |
caf47ea6 | 5541 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5542 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5543 | > output_section->lma)) |
252b5132 RH |
5544 | { |
5545 | if (suggested_lma == 0) | |
bc67d8a6 | 5546 | suggested_lma = output_section->lma; |
252b5132 RH |
5547 | |
5548 | continue; | |
5549 | } | |
5550 | } | |
5551 | ||
bc67d8a6 | 5552 | map->sections[map->count++] = output_section; |
252b5132 RH |
5553 | ++isec; |
5554 | sections[j] = NULL; | |
b34976b6 | 5555 | section->segment_mark = TRUE; |
252b5132 RH |
5556 | } |
5557 | else if (suggested_lma == 0) | |
bc67d8a6 | 5558 | suggested_lma = output_section->lma; |
252b5132 RH |
5559 | } |
5560 | ||
bc67d8a6 | 5561 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5562 | |
5563 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5564 | *pointer_to_map = map; |
5565 | pointer_to_map = &map->next; | |
252b5132 | 5566 | |
bc67d8a6 | 5567 | if (isec < section_count) |
252b5132 RH |
5568 | { |
5569 | /* We still have not allocated all of the sections to | |
5570 | segments. Create a new segment here, initialise it | |
5571 | and carry on looping. */ | |
dc810e39 AM |
5572 | amt = sizeof (struct elf_segment_map); |
5573 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5574 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5575 | if (map == NULL) |
5ed6aba4 NC |
5576 | { |
5577 | free (sections); | |
5578 | return FALSE; | |
5579 | } | |
252b5132 RH |
5580 | |
5581 | /* Initialise the fields of the segment map. Set the physical | |
5582 | physical address to the LMA of the first section that has | |
5583 | not yet been assigned. */ | |
bc67d8a6 NC |
5584 | map->next = NULL; |
5585 | map->p_type = segment->p_type; | |
5586 | map->p_flags = segment->p_flags; | |
5587 | map->p_flags_valid = 1; | |
5588 | map->p_paddr = suggested_lma; | |
5589 | map->p_paddr_valid = 1; | |
5590 | map->includes_filehdr = 0; | |
5591 | map->includes_phdrs = 0; | |
252b5132 RH |
5592 | } |
5593 | } | |
bc67d8a6 | 5594 | while (isec < section_count); |
252b5132 RH |
5595 | |
5596 | free (sections); | |
5597 | } | |
5598 | ||
5599 | /* The Solaris linker creates program headers in which all the | |
5600 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5601 | file, we get confused. Check for this case, and if we find it | |
5602 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5603 | for (map = map_first; map != NULL; map = map->next) |
5604 | if (map->p_paddr != 0) | |
252b5132 | 5605 | break; |
bc67d8a6 | 5606 | if (map == NULL) |
b5f852ea NC |
5607 | for (map = map_first; map != NULL; map = map->next) |
5608 | map->p_paddr_valid = 0; | |
252b5132 | 5609 | |
bc67d8a6 NC |
5610 | elf_tdata (obfd)->segment_map = map_first; |
5611 | ||
5612 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5613 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5614 | the offset if necessary. */ |
5615 | if (phdr_adjust_seg != NULL) | |
5616 | { | |
5617 | unsigned int count; | |
c044fabd | 5618 | |
bc67d8a6 | 5619 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5620 | count++; |
252b5132 | 5621 | |
bc67d8a6 NC |
5622 | if (count > phdr_adjust_num) |
5623 | phdr_adjust_seg->p_paddr | |
5624 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5625 | } | |
c044fabd | 5626 | |
bc67d8a6 | 5627 | #undef SEGMENT_END |
eecdbe52 | 5628 | #undef SECTION_SIZE |
bc67d8a6 NC |
5629 | #undef IS_CONTAINED_BY_VMA |
5630 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5631 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5632 | #undef IS_SOLARIS_PT_INTERP |
5633 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5634 | #undef SEGMENT_AFTER_SEGMENT | |
5635 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5636 | return TRUE; |
252b5132 RH |
5637 | } |
5638 | ||
5639 | /* Copy private section information. This copies over the entsize | |
5640 | field, and sometimes the info field. */ | |
5641 | ||
b34976b6 | 5642 | bfd_boolean |
217aa764 AM |
5643 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5644 | asection *isec, | |
5645 | bfd *obfd, | |
5646 | asection *osec) | |
252b5132 RH |
5647 | { |
5648 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5649 | ||
5650 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5651 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5652 | return TRUE; |
252b5132 | 5653 | |
252b5132 RH |
5654 | ihdr = &elf_section_data (isec)->this_hdr; |
5655 | ohdr = &elf_section_data (osec)->this_hdr; | |
5656 | ||
5657 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5658 | ||
5659 | if (ihdr->sh_type == SHT_SYMTAB | |
5660 | || ihdr->sh_type == SHT_DYNSYM | |
5661 | || ihdr->sh_type == SHT_GNU_verneed | |
5662 | || ihdr->sh_type == SHT_GNU_verdef) | |
5663 | ohdr->sh_info = ihdr->sh_info; | |
5664 | ||
9dce4196 AM |
5665 | /* Set things up for objcopy. The output SHT_GROUP section will |
5666 | have its elf_next_in_group pointing back to the input group | |
278d8f37 L |
5667 | members. Ignore linker created group section. See |
5668 | elfNN_ia64_object_p in elfxx-ia64.c. */ | |
5669 | if (elf_sec_group (isec) == NULL | |
5670 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5671 | { | |
5672 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5673 | elf_group_name (osec) = elf_group_name (isec); | |
5674 | } | |
9dce4196 | 5675 | |
68bfbfcc | 5676 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5677 | |
b34976b6 | 5678 | return TRUE; |
252b5132 RH |
5679 | } |
5680 | ||
80fccad2 BW |
5681 | /* Copy private header information. */ |
5682 | ||
5683 | bfd_boolean | |
5684 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5685 | { | |
5686 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5687 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5688 | return TRUE; | |
5689 | ||
5690 | /* Copy over private BFD data if it has not already been copied. | |
5691 | This must be done here, rather than in the copy_private_bfd_data | |
5692 | entry point, because the latter is called after the section | |
5693 | contents have been set, which means that the program headers have | |
5694 | already been worked out. */ | |
5695 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5696 | { | |
5697 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5698 | return FALSE; | |
5699 | } | |
5700 | ||
5701 | return TRUE; | |
5702 | } | |
5703 | ||
252b5132 RH |
5704 | /* Copy private symbol information. If this symbol is in a section |
5705 | which we did not map into a BFD section, try to map the section | |
5706 | index correctly. We use special macro definitions for the mapped | |
5707 | section indices; these definitions are interpreted by the | |
5708 | swap_out_syms function. */ | |
5709 | ||
9ad5cbcf AM |
5710 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5711 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5712 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5713 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5714 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5715 | |
b34976b6 | 5716 | bfd_boolean |
217aa764 AM |
5717 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5718 | asymbol *isymarg, | |
5719 | bfd *obfd, | |
5720 | asymbol *osymarg) | |
252b5132 RH |
5721 | { |
5722 | elf_symbol_type *isym, *osym; | |
5723 | ||
5724 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5725 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5726 | return TRUE; |
252b5132 RH |
5727 | |
5728 | isym = elf_symbol_from (ibfd, isymarg); | |
5729 | osym = elf_symbol_from (obfd, osymarg); | |
5730 | ||
5731 | if (isym != NULL | |
5732 | && osym != NULL | |
5733 | && bfd_is_abs_section (isym->symbol.section)) | |
5734 | { | |
5735 | unsigned int shndx; | |
5736 | ||
5737 | shndx = isym->internal_elf_sym.st_shndx; | |
5738 | if (shndx == elf_onesymtab (ibfd)) | |
5739 | shndx = MAP_ONESYMTAB; | |
5740 | else if (shndx == elf_dynsymtab (ibfd)) | |
5741 | shndx = MAP_DYNSYMTAB; | |
5742 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5743 | shndx = MAP_STRTAB; | |
5744 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5745 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5746 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5747 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5748 | osym->internal_elf_sym.st_shndx = shndx; |
5749 | } | |
5750 | ||
b34976b6 | 5751 | return TRUE; |
252b5132 RH |
5752 | } |
5753 | ||
5754 | /* Swap out the symbols. */ | |
5755 | ||
b34976b6 | 5756 | static bfd_boolean |
217aa764 AM |
5757 | swap_out_syms (bfd *abfd, |
5758 | struct bfd_strtab_hash **sttp, | |
5759 | int relocatable_p) | |
252b5132 | 5760 | { |
9c5bfbb7 | 5761 | const struct elf_backend_data *bed; |
079e9a2f AM |
5762 | int symcount; |
5763 | asymbol **syms; | |
5764 | struct bfd_strtab_hash *stt; | |
5765 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5766 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5767 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5768 | bfd_byte *outbound_syms; |
5769 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5770 | int idx; |
5771 | bfd_size_type amt; | |
174fd7f9 | 5772 | bfd_boolean name_local_sections; |
252b5132 RH |
5773 | |
5774 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5775 | return FALSE; |
252b5132 | 5776 | |
c044fabd | 5777 | /* Dump out the symtabs. */ |
079e9a2f AM |
5778 | stt = _bfd_elf_stringtab_init (); |
5779 | if (stt == NULL) | |
b34976b6 | 5780 | return FALSE; |
252b5132 | 5781 | |
079e9a2f AM |
5782 | bed = get_elf_backend_data (abfd); |
5783 | symcount = bfd_get_symcount (abfd); | |
5784 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5785 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5786 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5787 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5788 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5789 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5790 | |
5791 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5792 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5793 | ||
d0fb9a8d | 5794 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 5795 | if (outbound_syms == NULL) |
5ed6aba4 NC |
5796 | { |
5797 | _bfd_stringtab_free (stt); | |
5798 | return FALSE; | |
5799 | } | |
217aa764 | 5800 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5801 | |
9ad5cbcf AM |
5802 | outbound_shndx = NULL; |
5803 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5804 | if (symtab_shndx_hdr->sh_name != 0) | |
5805 | { | |
5806 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
5807 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
5808 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 5809 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5810 | { |
5811 | _bfd_stringtab_free (stt); | |
5812 | return FALSE; | |
5813 | } | |
5814 | ||
9ad5cbcf AM |
5815 | symtab_shndx_hdr->contents = outbound_shndx; |
5816 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5817 | symtab_shndx_hdr->sh_size = amt; | |
5818 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5819 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5820 | } | |
5821 | ||
589e6347 | 5822 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5823 | { |
5824 | /* Fill in zeroth symbol and swap it out. */ | |
5825 | Elf_Internal_Sym sym; | |
5826 | sym.st_name = 0; | |
5827 | sym.st_value = 0; | |
5828 | sym.st_size = 0; | |
5829 | sym.st_info = 0; | |
5830 | sym.st_other = 0; | |
5831 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5832 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5833 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5834 | if (outbound_shndx != NULL) |
5835 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5836 | } |
252b5132 | 5837 | |
174fd7f9 RS |
5838 | name_local_sections |
5839 | = (bed->elf_backend_name_local_section_symbols | |
5840 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5841 | ||
079e9a2f AM |
5842 | syms = bfd_get_outsymbols (abfd); |
5843 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5844 | { |
252b5132 | 5845 | Elf_Internal_Sym sym; |
079e9a2f AM |
5846 | bfd_vma value = syms[idx]->value; |
5847 | elf_symbol_type *type_ptr; | |
5848 | flagword flags = syms[idx]->flags; | |
5849 | int type; | |
252b5132 | 5850 | |
174fd7f9 RS |
5851 | if (!name_local_sections |
5852 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5853 | { |
5854 | /* Local section symbols have no name. */ | |
5855 | sym.st_name = 0; | |
5856 | } | |
5857 | else | |
5858 | { | |
5859 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5860 | syms[idx]->name, | |
b34976b6 | 5861 | TRUE, FALSE); |
079e9a2f | 5862 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5863 | { |
5864 | _bfd_stringtab_free (stt); | |
5865 | return FALSE; | |
5866 | } | |
079e9a2f | 5867 | } |
252b5132 | 5868 | |
079e9a2f | 5869 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5870 | |
079e9a2f AM |
5871 | if ((flags & BSF_SECTION_SYM) == 0 |
5872 | && bfd_is_com_section (syms[idx]->section)) | |
5873 | { | |
5874 | /* ELF common symbols put the alignment into the `value' field, | |
5875 | and the size into the `size' field. This is backwards from | |
5876 | how BFD handles it, so reverse it here. */ | |
5877 | sym.st_size = value; | |
5878 | if (type_ptr == NULL | |
5879 | || type_ptr->internal_elf_sym.st_value == 0) | |
5880 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5881 | else | |
5882 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5883 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5884 | (abfd, syms[idx]->section); | |
5885 | } | |
5886 | else | |
5887 | { | |
5888 | asection *sec = syms[idx]->section; | |
5889 | int shndx; | |
252b5132 | 5890 | |
079e9a2f AM |
5891 | if (sec->output_section) |
5892 | { | |
5893 | value += sec->output_offset; | |
5894 | sec = sec->output_section; | |
5895 | } | |
589e6347 | 5896 | |
079e9a2f AM |
5897 | /* Don't add in the section vma for relocatable output. */ |
5898 | if (! relocatable_p) | |
5899 | value += sec->vma; | |
5900 | sym.st_value = value; | |
5901 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5902 | ||
5903 | if (bfd_is_abs_section (sec) | |
5904 | && type_ptr != NULL | |
5905 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5906 | { | |
5907 | /* This symbol is in a real ELF section which we did | |
5908 | not create as a BFD section. Undo the mapping done | |
5909 | by copy_private_symbol_data. */ | |
5910 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5911 | switch (shndx) | |
5912 | { | |
5913 | case MAP_ONESYMTAB: | |
5914 | shndx = elf_onesymtab (abfd); | |
5915 | break; | |
5916 | case MAP_DYNSYMTAB: | |
5917 | shndx = elf_dynsymtab (abfd); | |
5918 | break; | |
5919 | case MAP_STRTAB: | |
5920 | shndx = elf_tdata (abfd)->strtab_section; | |
5921 | break; | |
5922 | case MAP_SHSTRTAB: | |
5923 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5924 | break; | |
9ad5cbcf AM |
5925 | case MAP_SYM_SHNDX: |
5926 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5927 | break; | |
079e9a2f AM |
5928 | default: |
5929 | break; | |
5930 | } | |
5931 | } | |
5932 | else | |
5933 | { | |
5934 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5935 | |
079e9a2f AM |
5936 | if (shndx == -1) |
5937 | { | |
5938 | asection *sec2; | |
5939 | ||
5940 | /* Writing this would be a hell of a lot easier if | |
5941 | we had some decent documentation on bfd, and | |
5942 | knew what to expect of the library, and what to | |
5943 | demand of applications. For example, it | |
5944 | appears that `objcopy' might not set the | |
5945 | section of a symbol to be a section that is | |
5946 | actually in the output file. */ | |
5947 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5948 | if (sec2 == NULL) |
5949 | { | |
5950 | _bfd_error_handler (_("\ | |
5951 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5952 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5953 | sec->name); | |
811072d8 | 5954 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5955 | _bfd_stringtab_free (stt); |
589e6347 NC |
5956 | return FALSE; |
5957 | } | |
811072d8 | 5958 | |
079e9a2f AM |
5959 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5960 | BFD_ASSERT (shndx != -1); | |
5961 | } | |
5962 | } | |
252b5132 | 5963 | |
079e9a2f AM |
5964 | sym.st_shndx = shndx; |
5965 | } | |
252b5132 | 5966 | |
13ae64f3 JJ |
5967 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5968 | type = STT_TLS; | |
5969 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5970 | type = STT_FUNC; |
5971 | else if ((flags & BSF_OBJECT) != 0) | |
5972 | type = STT_OBJECT; | |
5973 | else | |
5974 | type = STT_NOTYPE; | |
252b5132 | 5975 | |
13ae64f3 JJ |
5976 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5977 | type = STT_TLS; | |
5978 | ||
589e6347 | 5979 | /* Processor-specific types. */ |
079e9a2f AM |
5980 | if (type_ptr != NULL |
5981 | && bed->elf_backend_get_symbol_type) | |
5982 | type = ((*bed->elf_backend_get_symbol_type) | |
5983 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5984 | |
079e9a2f AM |
5985 | if (flags & BSF_SECTION_SYM) |
5986 | { | |
5987 | if (flags & BSF_GLOBAL) | |
5988 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5989 | else | |
5990 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
5991 | } | |
5992 | else if (bfd_is_com_section (syms[idx]->section)) | |
5993 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
5994 | else if (bfd_is_und_section (syms[idx]->section)) | |
5995 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
5996 | ? STB_WEAK | |
5997 | : STB_GLOBAL), | |
5998 | type); | |
5999 | else if (flags & BSF_FILE) | |
6000 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6001 | else | |
6002 | { | |
6003 | int bind = STB_LOCAL; | |
252b5132 | 6004 | |
079e9a2f AM |
6005 | if (flags & BSF_LOCAL) |
6006 | bind = STB_LOCAL; | |
6007 | else if (flags & BSF_WEAK) | |
6008 | bind = STB_WEAK; | |
6009 | else if (flags & BSF_GLOBAL) | |
6010 | bind = STB_GLOBAL; | |
252b5132 | 6011 | |
079e9a2f AM |
6012 | sym.st_info = ELF_ST_INFO (bind, type); |
6013 | } | |
252b5132 | 6014 | |
079e9a2f AM |
6015 | if (type_ptr != NULL) |
6016 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6017 | else | |
6018 | sym.st_other = 0; | |
252b5132 | 6019 | |
9ad5cbcf | 6020 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6021 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6022 | if (outbound_shndx != NULL) |
6023 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6024 | } |
252b5132 | 6025 | |
079e9a2f AM |
6026 | *sttp = stt; |
6027 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6028 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6029 | |
079e9a2f AM |
6030 | symstrtab_hdr->sh_flags = 0; |
6031 | symstrtab_hdr->sh_addr = 0; | |
6032 | symstrtab_hdr->sh_entsize = 0; | |
6033 | symstrtab_hdr->sh_link = 0; | |
6034 | symstrtab_hdr->sh_info = 0; | |
6035 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6036 | |
b34976b6 | 6037 | return TRUE; |
252b5132 RH |
6038 | } |
6039 | ||
6040 | /* Return the number of bytes required to hold the symtab vector. | |
6041 | ||
6042 | Note that we base it on the count plus 1, since we will null terminate | |
6043 | the vector allocated based on this size. However, the ELF symbol table | |
6044 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6045 | ||
6046 | long | |
217aa764 | 6047 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6048 | { |
6049 | long symcount; | |
6050 | long symtab_size; | |
6051 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6052 | ||
6053 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6054 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6055 | if (symcount > 0) | |
6056 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6057 | |
6058 | return symtab_size; | |
6059 | } | |
6060 | ||
6061 | long | |
217aa764 | 6062 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6063 | { |
6064 | long symcount; | |
6065 | long symtab_size; | |
6066 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6067 | ||
6068 | if (elf_dynsymtab (abfd) == 0) | |
6069 | { | |
6070 | bfd_set_error (bfd_error_invalid_operation); | |
6071 | return -1; | |
6072 | } | |
6073 | ||
6074 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6075 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6076 | if (symcount > 0) | |
6077 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6078 | |
6079 | return symtab_size; | |
6080 | } | |
6081 | ||
6082 | long | |
217aa764 AM |
6083 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6084 | sec_ptr asect) | |
252b5132 RH |
6085 | { |
6086 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6087 | } | |
6088 | ||
6089 | /* Canonicalize the relocs. */ | |
6090 | ||
6091 | long | |
217aa764 AM |
6092 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6093 | sec_ptr section, | |
6094 | arelent **relptr, | |
6095 | asymbol **symbols) | |
252b5132 RH |
6096 | { |
6097 | arelent *tblptr; | |
6098 | unsigned int i; | |
9c5bfbb7 | 6099 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6100 | |
b34976b6 | 6101 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6102 | return -1; |
6103 | ||
6104 | tblptr = section->relocation; | |
6105 | for (i = 0; i < section->reloc_count; i++) | |
6106 | *relptr++ = tblptr++; | |
6107 | ||
6108 | *relptr = NULL; | |
6109 | ||
6110 | return section->reloc_count; | |
6111 | } | |
6112 | ||
6113 | long | |
6cee3f79 | 6114 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6115 | { |
9c5bfbb7 | 6116 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6117 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6118 | |
6119 | if (symcount >= 0) | |
6120 | bfd_get_symcount (abfd) = symcount; | |
6121 | return symcount; | |
6122 | } | |
6123 | ||
6124 | long | |
217aa764 AM |
6125 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6126 | asymbol **allocation) | |
252b5132 | 6127 | { |
9c5bfbb7 | 6128 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6129 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6130 | |
6131 | if (symcount >= 0) | |
6132 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6133 | return symcount; | |
252b5132 RH |
6134 | } |
6135 | ||
8615f3f2 AM |
6136 | /* Return the size required for the dynamic reloc entries. Any loadable |
6137 | section that was actually installed in the BFD, and has type SHT_REL | |
6138 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6139 | dynamic reloc section. */ | |
252b5132 RH |
6140 | |
6141 | long | |
217aa764 | 6142 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6143 | { |
6144 | long ret; | |
6145 | asection *s; | |
6146 | ||
6147 | if (elf_dynsymtab (abfd) == 0) | |
6148 | { | |
6149 | bfd_set_error (bfd_error_invalid_operation); | |
6150 | return -1; | |
6151 | } | |
6152 | ||
6153 | ret = sizeof (arelent *); | |
6154 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6155 | if ((s->flags & SEC_LOAD) != 0 |
6156 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6157 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6158 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6159 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6160 | * sizeof (arelent *)); |
6161 | ||
6162 | return ret; | |
6163 | } | |
6164 | ||
8615f3f2 AM |
6165 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6166 | dynamic relocations as a single block, although they are actually | |
6167 | associated with particular sections; the interface, which was | |
6168 | designed for SunOS style shared libraries, expects that there is only | |
6169 | one set of dynamic relocs. Any loadable section that was actually | |
6170 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6171 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6172 | |
6173 | long | |
217aa764 AM |
6174 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6175 | arelent **storage, | |
6176 | asymbol **syms) | |
252b5132 | 6177 | { |
217aa764 | 6178 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6179 | asection *s; |
6180 | long ret; | |
6181 | ||
6182 | if (elf_dynsymtab (abfd) == 0) | |
6183 | { | |
6184 | bfd_set_error (bfd_error_invalid_operation); | |
6185 | return -1; | |
6186 | } | |
6187 | ||
6188 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6189 | ret = 0; | |
6190 | for (s = abfd->sections; s != NULL; s = s->next) | |
6191 | { | |
8615f3f2 AM |
6192 | if ((s->flags & SEC_LOAD) != 0 |
6193 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6194 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6195 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6196 | { | |
6197 | arelent *p; | |
6198 | long count, i; | |
6199 | ||
b34976b6 | 6200 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6201 | return -1; |
eea6121a | 6202 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6203 | p = s->relocation; |
6204 | for (i = 0; i < count; i++) | |
6205 | *storage++ = p++; | |
6206 | ret += count; | |
6207 | } | |
6208 | } | |
6209 | ||
6210 | *storage = NULL; | |
6211 | ||
6212 | return ret; | |
6213 | } | |
6214 | \f | |
6215 | /* Read in the version information. */ | |
6216 | ||
b34976b6 | 6217 | bfd_boolean |
fc0e6df6 | 6218 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6219 | { |
6220 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6221 | unsigned int freeidx = 0; |
6222 | ||
6223 | if (elf_dynverref (abfd) != 0) | |
6224 | { | |
6225 | Elf_Internal_Shdr *hdr; | |
6226 | Elf_External_Verneed *everneed; | |
6227 | Elf_Internal_Verneed *iverneed; | |
6228 | unsigned int i; | |
d0fb9a8d | 6229 | bfd_byte *contents_end; |
fc0e6df6 PB |
6230 | |
6231 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6232 | ||
d0fb9a8d JJ |
6233 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6234 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6235 | if (elf_tdata (abfd)->verref == NULL) |
6236 | goto error_return; | |
6237 | ||
6238 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6239 | ||
6240 | contents = bfd_malloc (hdr->sh_size); | |
6241 | if (contents == NULL) | |
d0fb9a8d JJ |
6242 | { |
6243 | error_return_verref: | |
6244 | elf_tdata (abfd)->verref = NULL; | |
6245 | elf_tdata (abfd)->cverrefs = 0; | |
6246 | goto error_return; | |
6247 | } | |
fc0e6df6 PB |
6248 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6249 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6250 | goto error_return_verref; |
fc0e6df6 | 6251 | |
d0fb9a8d JJ |
6252 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6253 | goto error_return_verref; | |
6254 | ||
6255 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6256 | == sizeof (Elf_External_Vernaux)); | |
6257 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6258 | everneed = (Elf_External_Verneed *) contents; |
6259 | iverneed = elf_tdata (abfd)->verref; | |
6260 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6261 | { | |
6262 | Elf_External_Vernaux *evernaux; | |
6263 | Elf_Internal_Vernaux *ivernaux; | |
6264 | unsigned int j; | |
6265 | ||
6266 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6267 | ||
6268 | iverneed->vn_bfd = abfd; | |
6269 | ||
6270 | iverneed->vn_filename = | |
6271 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6272 | iverneed->vn_file); | |
6273 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6274 | goto error_return_verref; |
fc0e6df6 | 6275 | |
d0fb9a8d JJ |
6276 | if (iverneed->vn_cnt == 0) |
6277 | iverneed->vn_auxptr = NULL; | |
6278 | else | |
6279 | { | |
6280 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6281 | sizeof (Elf_Internal_Vernaux)); | |
6282 | if (iverneed->vn_auxptr == NULL) | |
6283 | goto error_return_verref; | |
6284 | } | |
6285 | ||
6286 | if (iverneed->vn_aux | |
6287 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6288 | goto error_return_verref; | |
fc0e6df6 PB |
6289 | |
6290 | evernaux = ((Elf_External_Vernaux *) | |
6291 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6292 | ivernaux = iverneed->vn_auxptr; | |
6293 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6294 | { | |
6295 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6296 | ||
6297 | ivernaux->vna_nodename = | |
6298 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6299 | ivernaux->vna_name); | |
6300 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6301 | goto error_return_verref; |
fc0e6df6 PB |
6302 | |
6303 | if (j + 1 < iverneed->vn_cnt) | |
6304 | ivernaux->vna_nextptr = ivernaux + 1; | |
6305 | else | |
6306 | ivernaux->vna_nextptr = NULL; | |
6307 | ||
d0fb9a8d JJ |
6308 | if (ivernaux->vna_next |
6309 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6310 | goto error_return_verref; | |
6311 | ||
fc0e6df6 PB |
6312 | evernaux = ((Elf_External_Vernaux *) |
6313 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6314 | ||
6315 | if (ivernaux->vna_other > freeidx) | |
6316 | freeidx = ivernaux->vna_other; | |
6317 | } | |
6318 | ||
6319 | if (i + 1 < hdr->sh_info) | |
6320 | iverneed->vn_nextref = iverneed + 1; | |
6321 | else | |
6322 | iverneed->vn_nextref = NULL; | |
6323 | ||
d0fb9a8d JJ |
6324 | if (iverneed->vn_next |
6325 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6326 | goto error_return_verref; | |
6327 | ||
fc0e6df6 PB |
6328 | everneed = ((Elf_External_Verneed *) |
6329 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6330 | } | |
6331 | ||
6332 | free (contents); | |
6333 | contents = NULL; | |
6334 | } | |
252b5132 RH |
6335 | |
6336 | if (elf_dynverdef (abfd) != 0) | |
6337 | { | |
6338 | Elf_Internal_Shdr *hdr; | |
6339 | Elf_External_Verdef *everdef; | |
6340 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6341 | Elf_Internal_Verdef *iverdefarr; |
6342 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6343 | unsigned int i; |
062e2358 | 6344 | unsigned int maxidx; |
d0fb9a8d | 6345 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6346 | |
6347 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6348 | ||
217aa764 | 6349 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6350 | if (contents == NULL) |
6351 | goto error_return; | |
6352 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6353 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6354 | goto error_return; |
6355 | ||
d0fb9a8d JJ |
6356 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6357 | goto error_return; | |
6358 | ||
6359 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6360 | >= sizeof (Elf_External_Verdaux)); | |
6361 | contents_end_def = contents + hdr->sh_size | |
6362 | - sizeof (Elf_External_Verdef); | |
6363 | contents_end_aux = contents + hdr->sh_size | |
6364 | - sizeof (Elf_External_Verdaux); | |
6365 | ||
f631889e UD |
6366 | /* We know the number of entries in the section but not the maximum |
6367 | index. Therefore we have to run through all entries and find | |
6368 | the maximum. */ | |
252b5132 | 6369 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6370 | maxidx = 0; |
6371 | for (i = 0; i < hdr->sh_info; ++i) | |
6372 | { | |
6373 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6374 | ||
062e2358 AM |
6375 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6376 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6377 | |
d0fb9a8d JJ |
6378 | if (iverdefmem.vd_next |
6379 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6380 | goto error_return; | |
6381 | ||
f631889e UD |
6382 | everdef = ((Elf_External_Verdef *) |
6383 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6384 | } | |
6385 | ||
fc0e6df6 PB |
6386 | if (default_imported_symver) |
6387 | { | |
6388 | if (freeidx > maxidx) | |
6389 | maxidx = ++freeidx; | |
6390 | else | |
6391 | freeidx = ++maxidx; | |
6392 | } | |
d0fb9a8d JJ |
6393 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6394 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6395 | if (elf_tdata (abfd)->verdef == NULL) |
6396 | goto error_return; | |
6397 | ||
6398 | elf_tdata (abfd)->cverdefs = maxidx; | |
6399 | ||
6400 | everdef = (Elf_External_Verdef *) contents; | |
6401 | iverdefarr = elf_tdata (abfd)->verdef; | |
6402 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6403 | { |
6404 | Elf_External_Verdaux *everdaux; | |
6405 | Elf_Internal_Verdaux *iverdaux; | |
6406 | unsigned int j; | |
6407 | ||
f631889e UD |
6408 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6409 | ||
d0fb9a8d JJ |
6410 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6411 | { | |
6412 | error_return_verdef: | |
6413 | elf_tdata (abfd)->verdef = NULL; | |
6414 | elf_tdata (abfd)->cverdefs = 0; | |
6415 | goto error_return; | |
6416 | } | |
6417 | ||
f631889e UD |
6418 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6419 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6420 | |
6421 | iverdef->vd_bfd = abfd; | |
6422 | ||
d0fb9a8d JJ |
6423 | if (iverdef->vd_cnt == 0) |
6424 | iverdef->vd_auxptr = NULL; | |
6425 | else | |
6426 | { | |
6427 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6428 | sizeof (Elf_Internal_Verdaux)); | |
6429 | if (iverdef->vd_auxptr == NULL) | |
6430 | goto error_return_verdef; | |
6431 | } | |
6432 | ||
6433 | if (iverdef->vd_aux | |
6434 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6435 | goto error_return_verdef; | |
252b5132 RH |
6436 | |
6437 | everdaux = ((Elf_External_Verdaux *) | |
6438 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6439 | iverdaux = iverdef->vd_auxptr; | |
6440 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6441 | { | |
6442 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6443 | ||
6444 | iverdaux->vda_nodename = | |
6445 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6446 | iverdaux->vda_name); | |
6447 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6448 | goto error_return_verdef; |
252b5132 RH |
6449 | |
6450 | if (j + 1 < iverdef->vd_cnt) | |
6451 | iverdaux->vda_nextptr = iverdaux + 1; | |
6452 | else | |
6453 | iverdaux->vda_nextptr = NULL; | |
6454 | ||
d0fb9a8d JJ |
6455 | if (iverdaux->vda_next |
6456 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6457 | goto error_return_verdef; | |
6458 | ||
252b5132 RH |
6459 | everdaux = ((Elf_External_Verdaux *) |
6460 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6461 | } | |
6462 | ||
d0fb9a8d JJ |
6463 | if (iverdef->vd_cnt) |
6464 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6465 | |
d0fb9a8d | 6466 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6467 | iverdef->vd_nextdef = iverdef + 1; |
6468 | else | |
6469 | iverdef->vd_nextdef = NULL; | |
6470 | ||
6471 | everdef = ((Elf_External_Verdef *) | |
6472 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6473 | } | |
6474 | ||
6475 | free (contents); | |
6476 | contents = NULL; | |
6477 | } | |
fc0e6df6 | 6478 | else if (default_imported_symver) |
252b5132 | 6479 | { |
fc0e6df6 PB |
6480 | if (freeidx < 3) |
6481 | freeidx = 3; | |
6482 | else | |
6483 | freeidx++; | |
252b5132 | 6484 | |
d0fb9a8d JJ |
6485 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6486 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6487 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6488 | goto error_return; |
6489 | ||
fc0e6df6 PB |
6490 | elf_tdata (abfd)->cverdefs = freeidx; |
6491 | } | |
252b5132 | 6492 | |
fc0e6df6 PB |
6493 | /* Create a default version based on the soname. */ |
6494 | if (default_imported_symver) | |
6495 | { | |
6496 | Elf_Internal_Verdef *iverdef; | |
6497 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6498 | |
fc0e6df6 | 6499 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6500 | |
fc0e6df6 PB |
6501 | iverdef->vd_version = VER_DEF_CURRENT; |
6502 | iverdef->vd_flags = 0; | |
6503 | iverdef->vd_ndx = freeidx; | |
6504 | iverdef->vd_cnt = 1; | |
252b5132 | 6505 | |
fc0e6df6 | 6506 | iverdef->vd_bfd = abfd; |
252b5132 | 6507 | |
fc0e6df6 PB |
6508 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6509 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6510 | goto error_return_verdef; |
fc0e6df6 | 6511 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6512 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6513 | if (iverdef->vd_auxptr == NULL) | |
6514 | goto error_return_verdef; | |
252b5132 | 6515 | |
fc0e6df6 PB |
6516 | iverdaux = iverdef->vd_auxptr; |
6517 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6518 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6519 | } |
6520 | ||
b34976b6 | 6521 | return TRUE; |
252b5132 RH |
6522 | |
6523 | error_return: | |
5ed6aba4 | 6524 | if (contents != NULL) |
252b5132 | 6525 | free (contents); |
b34976b6 | 6526 | return FALSE; |
252b5132 RH |
6527 | } |
6528 | \f | |
6529 | asymbol * | |
217aa764 | 6530 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6531 | { |
6532 | elf_symbol_type *newsym; | |
dc810e39 | 6533 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6534 | |
217aa764 | 6535 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6536 | if (!newsym) |
6537 | return NULL; | |
6538 | else | |
6539 | { | |
6540 | newsym->symbol.the_bfd = abfd; | |
6541 | return &newsym->symbol; | |
6542 | } | |
6543 | } | |
6544 | ||
6545 | void | |
217aa764 AM |
6546 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6547 | asymbol *symbol, | |
6548 | symbol_info *ret) | |
252b5132 RH |
6549 | { |
6550 | bfd_symbol_info (symbol, ret); | |
6551 | } | |
6552 | ||
6553 | /* Return whether a symbol name implies a local symbol. Most targets | |
6554 | use this function for the is_local_label_name entry point, but some | |
6555 | override it. */ | |
6556 | ||
b34976b6 | 6557 | bfd_boolean |
217aa764 AM |
6558 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6559 | const char *name) | |
252b5132 RH |
6560 | { |
6561 | /* Normal local symbols start with ``.L''. */ | |
6562 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6563 | return TRUE; |
252b5132 RH |
6564 | |
6565 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6566 | DWARF debugging symbols starting with ``..''. */ | |
6567 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6568 | return TRUE; |
252b5132 RH |
6569 | |
6570 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6571 | emitting DWARF debugging output. I suspect this is actually a | |
6572 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6573 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6574 | underscore to be emitted on some ELF targets). For ease of use, | |
6575 | we treat such symbols as local. */ | |
6576 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6577 | return TRUE; |
252b5132 | 6578 | |
b34976b6 | 6579 | return FALSE; |
252b5132 RH |
6580 | } |
6581 | ||
6582 | alent * | |
217aa764 AM |
6583 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6584 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6585 | { |
6586 | abort (); | |
6587 | return NULL; | |
6588 | } | |
6589 | ||
b34976b6 | 6590 | bfd_boolean |
217aa764 AM |
6591 | _bfd_elf_set_arch_mach (bfd *abfd, |
6592 | enum bfd_architecture arch, | |
6593 | unsigned long machine) | |
252b5132 RH |
6594 | { |
6595 | /* If this isn't the right architecture for this backend, and this | |
6596 | isn't the generic backend, fail. */ | |
6597 | if (arch != get_elf_backend_data (abfd)->arch | |
6598 | && arch != bfd_arch_unknown | |
6599 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6600 | return FALSE; |
252b5132 RH |
6601 | |
6602 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6603 | } | |
6604 | ||
d1fad7c6 NC |
6605 | /* Find the function to a particular section and offset, |
6606 | for error reporting. */ | |
252b5132 | 6607 | |
b34976b6 | 6608 | static bfd_boolean |
217aa764 AM |
6609 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6610 | asection *section, | |
6611 | asymbol **symbols, | |
6612 | bfd_vma offset, | |
6613 | const char **filename_ptr, | |
6614 | const char **functionname_ptr) | |
252b5132 | 6615 | { |
252b5132 | 6616 | const char *filename; |
57426232 | 6617 | asymbol *func, *file; |
252b5132 RH |
6618 | bfd_vma low_func; |
6619 | asymbol **p; | |
57426232 JB |
6620 | /* ??? Given multiple file symbols, it is impossible to reliably |
6621 | choose the right file name for global symbols. File symbols are | |
6622 | local symbols, and thus all file symbols must sort before any | |
6623 | global symbols. The ELF spec may be interpreted to say that a | |
6624 | file symbol must sort before other local symbols, but currently | |
6625 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6626 | make a better choice of file name for local symbols by ignoring | |
6627 | file symbols appearing after a given local symbol. */ | |
6628 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6629 | |
252b5132 RH |
6630 | filename = NULL; |
6631 | func = NULL; | |
57426232 | 6632 | file = NULL; |
252b5132 | 6633 | low_func = 0; |
57426232 | 6634 | state = nothing_seen; |
252b5132 RH |
6635 | |
6636 | for (p = symbols; *p != NULL; p++) | |
6637 | { | |
6638 | elf_symbol_type *q; | |
6639 | ||
6640 | q = (elf_symbol_type *) *p; | |
6641 | ||
252b5132 RH |
6642 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6643 | { | |
6644 | default: | |
6645 | break; | |
6646 | case STT_FILE: | |
57426232 JB |
6647 | file = &q->symbol; |
6648 | if (state == symbol_seen) | |
6649 | state = file_after_symbol_seen; | |
6650 | continue; | |
6651 | case STT_SECTION: | |
6652 | continue; | |
252b5132 RH |
6653 | case STT_NOTYPE: |
6654 | case STT_FUNC: | |
6b40fcba | 6655 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6656 | && q->symbol.value >= low_func |
6657 | && q->symbol.value <= offset) | |
6658 | { | |
6659 | func = (asymbol *) q; | |
6660 | low_func = q->symbol.value; | |
57426232 JB |
6661 | if (file == NULL) |
6662 | filename = NULL; | |
6663 | else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL | |
6664 | && state == file_after_symbol_seen) | |
6665 | filename = NULL; | |
6666 | else | |
6667 | filename = bfd_asymbol_name (file); | |
252b5132 RH |
6668 | } |
6669 | break; | |
6670 | } | |
57426232 JB |
6671 | if (state == nothing_seen) |
6672 | state = symbol_seen; | |
252b5132 RH |
6673 | } |
6674 | ||
6675 | if (func == NULL) | |
b34976b6 | 6676 | return FALSE; |
252b5132 | 6677 | |
d1fad7c6 NC |
6678 | if (filename_ptr) |
6679 | *filename_ptr = filename; | |
6680 | if (functionname_ptr) | |
6681 | *functionname_ptr = bfd_asymbol_name (func); | |
6682 | ||
b34976b6 | 6683 | return TRUE; |
d1fad7c6 NC |
6684 | } |
6685 | ||
6686 | /* Find the nearest line to a particular section and offset, | |
6687 | for error reporting. */ | |
6688 | ||
b34976b6 | 6689 | bfd_boolean |
217aa764 AM |
6690 | _bfd_elf_find_nearest_line (bfd *abfd, |
6691 | asection *section, | |
6692 | asymbol **symbols, | |
6693 | bfd_vma offset, | |
6694 | const char **filename_ptr, | |
6695 | const char **functionname_ptr, | |
6696 | unsigned int *line_ptr) | |
d1fad7c6 | 6697 | { |
b34976b6 | 6698 | bfd_boolean found; |
d1fad7c6 NC |
6699 | |
6700 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6701 | filename_ptr, functionname_ptr, |
6702 | line_ptr)) | |
d1fad7c6 NC |
6703 | { |
6704 | if (!*functionname_ptr) | |
4e8a9624 AM |
6705 | elf_find_function (abfd, section, symbols, offset, |
6706 | *filename_ptr ? NULL : filename_ptr, | |
6707 | functionname_ptr); | |
6708 | ||
b34976b6 | 6709 | return TRUE; |
d1fad7c6 NC |
6710 | } |
6711 | ||
6712 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6713 | filename_ptr, functionname_ptr, |
6714 | line_ptr, 0, | |
6715 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6716 | { |
6717 | if (!*functionname_ptr) | |
4e8a9624 AM |
6718 | elf_find_function (abfd, section, symbols, offset, |
6719 | *filename_ptr ? NULL : filename_ptr, | |
6720 | functionname_ptr); | |
6721 | ||
b34976b6 | 6722 | return TRUE; |
d1fad7c6 NC |
6723 | } |
6724 | ||
6725 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6726 | &found, filename_ptr, |
6727 | functionname_ptr, line_ptr, | |
6728 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6729 | return FALSE; |
dc43ada5 | 6730 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6731 | return TRUE; |
d1fad7c6 NC |
6732 | |
6733 | if (symbols == NULL) | |
b34976b6 | 6734 | return FALSE; |
d1fad7c6 NC |
6735 | |
6736 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6737 | filename_ptr, functionname_ptr)) |
b34976b6 | 6738 | return FALSE; |
d1fad7c6 | 6739 | |
252b5132 | 6740 | *line_ptr = 0; |
b34976b6 | 6741 | return TRUE; |
252b5132 RH |
6742 | } |
6743 | ||
5420f73d L |
6744 | /* Find the line for a symbol. */ |
6745 | ||
6746 | bfd_boolean | |
6747 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
6748 | const char **filename_ptr, unsigned int *line_ptr) | |
6749 | { | |
6750 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
6751 | filename_ptr, line_ptr, 0, | |
6752 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
6753 | } | |
6754 | ||
4ab527b0 FF |
6755 | /* After a call to bfd_find_nearest_line, successive calls to |
6756 | bfd_find_inliner_info can be used to get source information about | |
6757 | each level of function inlining that terminated at the address | |
6758 | passed to bfd_find_nearest_line. Currently this is only supported | |
6759 | for DWARF2 with appropriate DWARF3 extensions. */ | |
6760 | ||
6761 | bfd_boolean | |
6762 | _bfd_elf_find_inliner_info (bfd *abfd, | |
6763 | const char **filename_ptr, | |
6764 | const char **functionname_ptr, | |
6765 | unsigned int *line_ptr) | |
6766 | { | |
6767 | bfd_boolean found; | |
6768 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
6769 | functionname_ptr, line_ptr, | |
6770 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
6771 | return found; | |
6772 | } | |
6773 | ||
252b5132 | 6774 | int |
217aa764 | 6775 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6776 | { |
6777 | int ret; | |
6778 | ||
6779 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6780 | if (! reloc) | |
6781 | ret += get_program_header_size (abfd); | |
6782 | return ret; | |
6783 | } | |
6784 | ||
b34976b6 | 6785 | bfd_boolean |
217aa764 AM |
6786 | _bfd_elf_set_section_contents (bfd *abfd, |
6787 | sec_ptr section, | |
0f867abe | 6788 | const void *location, |
217aa764 AM |
6789 | file_ptr offset, |
6790 | bfd_size_type count) | |
252b5132 RH |
6791 | { |
6792 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6793 | bfd_signed_vma pos; |
252b5132 RH |
6794 | |
6795 | if (! abfd->output_has_begun | |
217aa764 | 6796 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6797 | return FALSE; |
252b5132 RH |
6798 | |
6799 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6800 | pos = hdr->sh_offset + offset; |
6801 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6802 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6803 | return FALSE; |
252b5132 | 6804 | |
b34976b6 | 6805 | return TRUE; |
252b5132 RH |
6806 | } |
6807 | ||
6808 | void | |
217aa764 AM |
6809 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6810 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6811 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6812 | { |
6813 | abort (); | |
6814 | } | |
6815 | ||
252b5132 RH |
6816 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6817 | ||
b34976b6 | 6818 | bfd_boolean |
217aa764 | 6819 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6820 | { |
c044fabd | 6821 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6822 | |
6823 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6824 | { | |
6825 | bfd_reloc_code_real_type code; | |
6826 | reloc_howto_type *howto; | |
6827 | ||
6828 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6829 | equivalent ELF reloc. */ |
252b5132 RH |
6830 | |
6831 | if (areloc->howto->pc_relative) | |
6832 | { | |
6833 | switch (areloc->howto->bitsize) | |
6834 | { | |
6835 | case 8: | |
6836 | code = BFD_RELOC_8_PCREL; | |
6837 | break; | |
6838 | case 12: | |
6839 | code = BFD_RELOC_12_PCREL; | |
6840 | break; | |
6841 | case 16: | |
6842 | code = BFD_RELOC_16_PCREL; | |
6843 | break; | |
6844 | case 24: | |
6845 | code = BFD_RELOC_24_PCREL; | |
6846 | break; | |
6847 | case 32: | |
6848 | code = BFD_RELOC_32_PCREL; | |
6849 | break; | |
6850 | case 64: | |
6851 | code = BFD_RELOC_64_PCREL; | |
6852 | break; | |
6853 | default: | |
6854 | goto fail; | |
6855 | } | |
6856 | ||
6857 | howto = bfd_reloc_type_lookup (abfd, code); | |
6858 | ||
6859 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6860 | { | |
6861 | if (howto->pcrel_offset) | |
6862 | areloc->addend += areloc->address; | |
6863 | else | |
6864 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6865 | } | |
6866 | } | |
6867 | else | |
6868 | { | |
6869 | switch (areloc->howto->bitsize) | |
6870 | { | |
6871 | case 8: | |
6872 | code = BFD_RELOC_8; | |
6873 | break; | |
6874 | case 14: | |
6875 | code = BFD_RELOC_14; | |
6876 | break; | |
6877 | case 16: | |
6878 | code = BFD_RELOC_16; | |
6879 | break; | |
6880 | case 26: | |
6881 | code = BFD_RELOC_26; | |
6882 | break; | |
6883 | case 32: | |
6884 | code = BFD_RELOC_32; | |
6885 | break; | |
6886 | case 64: | |
6887 | code = BFD_RELOC_64; | |
6888 | break; | |
6889 | default: | |
6890 | goto fail; | |
6891 | } | |
6892 | ||
6893 | howto = bfd_reloc_type_lookup (abfd, code); | |
6894 | } | |
6895 | ||
6896 | if (howto) | |
6897 | areloc->howto = howto; | |
6898 | else | |
6899 | goto fail; | |
6900 | } | |
6901 | ||
b34976b6 | 6902 | return TRUE; |
252b5132 RH |
6903 | |
6904 | fail: | |
6905 | (*_bfd_error_handler) | |
d003868e AM |
6906 | (_("%B: unsupported relocation type %s"), |
6907 | abfd, areloc->howto->name); | |
252b5132 | 6908 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6909 | return FALSE; |
252b5132 RH |
6910 | } |
6911 | ||
b34976b6 | 6912 | bfd_boolean |
217aa764 | 6913 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6914 | { |
6915 | if (bfd_get_format (abfd) == bfd_object) | |
6916 | { | |
6917 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6918 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 6919 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
6920 | } |
6921 | ||
6922 | return _bfd_generic_close_and_cleanup (abfd); | |
6923 | } | |
6924 | ||
6925 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6926 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6927 | range-checking to interfere. There is nothing else to do in processing | |
6928 | this reloc. */ | |
6929 | ||
6930 | bfd_reloc_status_type | |
217aa764 AM |
6931 | _bfd_elf_rel_vtable_reloc_fn |
6932 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6933 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6934 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6935 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6936 | { |
6937 | return bfd_reloc_ok; | |
6938 | } | |
252b5132 RH |
6939 | \f |
6940 | /* Elf core file support. Much of this only works on native | |
6941 | toolchains, since we rely on knowing the | |
6942 | machine-dependent procfs structure in order to pick | |
c044fabd | 6943 | out details about the corefile. */ |
252b5132 RH |
6944 | |
6945 | #ifdef HAVE_SYS_PROCFS_H | |
6946 | # include <sys/procfs.h> | |
6947 | #endif | |
6948 | ||
c044fabd | 6949 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6950 | |
6951 | static int | |
217aa764 | 6952 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6953 | { |
6954 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6955 | + (elf_tdata (abfd)->core_pid)); | |
6956 | } | |
6957 | ||
252b5132 RH |
6958 | /* If there isn't a section called NAME, make one, using |
6959 | data from SECT. Note, this function will generate a | |
6960 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6961 | overwrite it. */ |
252b5132 | 6962 | |
b34976b6 | 6963 | static bfd_boolean |
217aa764 | 6964 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6965 | { |
c044fabd | 6966 | asection *sect2; |
252b5132 RH |
6967 | |
6968 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6969 | return TRUE; |
252b5132 RH |
6970 | |
6971 | sect2 = bfd_make_section (abfd, name); | |
6972 | if (sect2 == NULL) | |
b34976b6 | 6973 | return FALSE; |
252b5132 | 6974 | |
eea6121a | 6975 | sect2->size = sect->size; |
252b5132 RH |
6976 | sect2->filepos = sect->filepos; |
6977 | sect2->flags = sect->flags; | |
6978 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6979 | return TRUE; |
252b5132 RH |
6980 | } |
6981 | ||
bb0082d6 AM |
6982 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6983 | actually creates up to two pseudosections: | |
6984 | - For the single-threaded case, a section named NAME, unless | |
6985 | such a section already exists. | |
6986 | - For the multi-threaded case, a section named "NAME/PID", where | |
6987 | PID is elfcore_make_pid (abfd). | |
6988 | Both pseudosections have identical contents. */ | |
b34976b6 | 6989 | bfd_boolean |
217aa764 AM |
6990 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6991 | char *name, | |
6992 | size_t size, | |
6993 | ufile_ptr filepos) | |
bb0082d6 AM |
6994 | { |
6995 | char buf[100]; | |
6996 | char *threaded_name; | |
d4c88bbb | 6997 | size_t len; |
bb0082d6 AM |
6998 | asection *sect; |
6999 | ||
7000 | /* Build the section name. */ | |
7001 | ||
7002 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7003 | len = strlen (buf) + 1; |
217aa764 | 7004 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7005 | if (threaded_name == NULL) |
b34976b6 | 7006 | return FALSE; |
d4c88bbb | 7007 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7008 | |
62f3bb11 | 7009 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 7010 | if (sect == NULL) |
b34976b6 | 7011 | return FALSE; |
eea6121a | 7012 | sect->size = size; |
bb0082d6 AM |
7013 | sect->filepos = filepos; |
7014 | sect->flags = SEC_HAS_CONTENTS; | |
7015 | sect->alignment_power = 2; | |
7016 | ||
936e320b | 7017 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7018 | } |
7019 | ||
252b5132 | 7020 | /* prstatus_t exists on: |
4a938328 | 7021 | solaris 2.5+ |
252b5132 RH |
7022 | linux 2.[01] + glibc |
7023 | unixware 4.2 | |
7024 | */ | |
7025 | ||
7026 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7027 | |
b34976b6 | 7028 | static bfd_boolean |
217aa764 | 7029 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7030 | { |
eea6121a | 7031 | size_t size; |
7ee38065 | 7032 | int offset; |
252b5132 | 7033 | |
4a938328 MS |
7034 | if (note->descsz == sizeof (prstatus_t)) |
7035 | { | |
7036 | prstatus_t prstat; | |
252b5132 | 7037 | |
eea6121a | 7038 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7039 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7040 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7041 | |
fa49d224 NC |
7042 | /* Do not overwrite the core signal if it |
7043 | has already been set by another thread. */ | |
7044 | if (elf_tdata (abfd)->core_signal == 0) | |
7045 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7046 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7047 | |
4a938328 MS |
7048 | /* pr_who exists on: |
7049 | solaris 2.5+ | |
7050 | unixware 4.2 | |
7051 | pr_who doesn't exist on: | |
7052 | linux 2.[01] | |
7053 | */ | |
252b5132 | 7054 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7055 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7056 | #endif |
4a938328 | 7057 | } |
7ee38065 | 7058 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7059 | else if (note->descsz == sizeof (prstatus32_t)) |
7060 | { | |
7061 | /* 64-bit host, 32-bit corefile */ | |
7062 | prstatus32_t prstat; | |
7063 | ||
eea6121a | 7064 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7065 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7066 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7067 | ||
fa49d224 NC |
7068 | /* Do not overwrite the core signal if it |
7069 | has already been set by another thread. */ | |
7070 | if (elf_tdata (abfd)->core_signal == 0) | |
7071 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7072 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7073 | ||
7074 | /* pr_who exists on: | |
7075 | solaris 2.5+ | |
7076 | unixware 4.2 | |
7077 | pr_who doesn't exist on: | |
7078 | linux 2.[01] | |
7079 | */ | |
7ee38065 | 7080 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7081 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7082 | #endif | |
7083 | } | |
7ee38065 | 7084 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7085 | else |
7086 | { | |
7087 | /* Fail - we don't know how to handle any other | |
7088 | note size (ie. data object type). */ | |
b34976b6 | 7089 | return TRUE; |
4a938328 | 7090 | } |
252b5132 | 7091 | |
bb0082d6 | 7092 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7093 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7094 | size, note->descpos + offset); |
252b5132 RH |
7095 | } |
7096 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7097 | ||
bb0082d6 | 7098 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7099 | static bfd_boolean |
217aa764 AM |
7100 | elfcore_make_note_pseudosection (bfd *abfd, |
7101 | char *name, | |
7102 | Elf_Internal_Note *note) | |
252b5132 | 7103 | { |
936e320b AM |
7104 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7105 | note->descsz, note->descpos); | |
252b5132 RH |
7106 | } |
7107 | ||
ff08c6bb JB |
7108 | /* There isn't a consistent prfpregset_t across platforms, |
7109 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7110 | data structure apart. */ |
7111 | ||
b34976b6 | 7112 | static bfd_boolean |
217aa764 | 7113 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7114 | { |
7115 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7116 | } | |
7117 | ||
ff08c6bb JB |
7118 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7119 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7120 | literally. */ | |
c044fabd | 7121 | |
b34976b6 | 7122 | static bfd_boolean |
217aa764 | 7123 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7124 | { |
7125 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7126 | } | |
7127 | ||
252b5132 | 7128 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7129 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7130 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7131 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7132 | #endif | |
252b5132 RH |
7133 | #endif |
7134 | ||
7135 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7136 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7137 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7138 | typedef psinfo32_t elfcore_psinfo32_t; |
7139 | #endif | |
252b5132 RH |
7140 | #endif |
7141 | ||
252b5132 RH |
7142 | /* return a malloc'ed copy of a string at START which is at |
7143 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7144 | the copy will always have a terminating '\0'. */ |
252b5132 | 7145 | |
936e320b | 7146 | char * |
217aa764 | 7147 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7148 | { |
dc810e39 | 7149 | char *dups; |
c044fabd | 7150 | char *end = memchr (start, '\0', max); |
dc810e39 | 7151 | size_t len; |
252b5132 RH |
7152 | |
7153 | if (end == NULL) | |
7154 | len = max; | |
7155 | else | |
7156 | len = end - start; | |
7157 | ||
217aa764 | 7158 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7159 | if (dups == NULL) |
252b5132 RH |
7160 | return NULL; |
7161 | ||
dc810e39 AM |
7162 | memcpy (dups, start, len); |
7163 | dups[len] = '\0'; | |
252b5132 | 7164 | |
dc810e39 | 7165 | return dups; |
252b5132 RH |
7166 | } |
7167 | ||
bb0082d6 | 7168 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7169 | static bfd_boolean |
217aa764 | 7170 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7171 | { |
4a938328 MS |
7172 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7173 | { | |
7174 | elfcore_psinfo_t psinfo; | |
252b5132 | 7175 | |
7ee38065 | 7176 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7177 | |
4a938328 | 7178 | elf_tdata (abfd)->core_program |
936e320b AM |
7179 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7180 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7181 | |
4a938328 | 7182 | elf_tdata (abfd)->core_command |
936e320b AM |
7183 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7184 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7185 | } |
7ee38065 | 7186 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7187 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7188 | { | |
7189 | /* 64-bit host, 32-bit corefile */ | |
7190 | elfcore_psinfo32_t psinfo; | |
7191 | ||
7ee38065 | 7192 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7193 | |
4a938328 | 7194 | elf_tdata (abfd)->core_program |
936e320b AM |
7195 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7196 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7197 | |
7198 | elf_tdata (abfd)->core_command | |
936e320b AM |
7199 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7200 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7201 | } |
7202 | #endif | |
7203 | ||
7204 | else | |
7205 | { | |
7206 | /* Fail - we don't know how to handle any other | |
7207 | note size (ie. data object type). */ | |
b34976b6 | 7208 | return TRUE; |
4a938328 | 7209 | } |
252b5132 RH |
7210 | |
7211 | /* Note that for some reason, a spurious space is tacked | |
7212 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7213 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7214 | |
7215 | { | |
c044fabd | 7216 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7217 | int n = strlen (command); |
7218 | ||
7219 | if (0 < n && command[n - 1] == ' ') | |
7220 | command[n - 1] = '\0'; | |
7221 | } | |
7222 | ||
b34976b6 | 7223 | return TRUE; |
252b5132 RH |
7224 | } |
7225 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7226 | ||
252b5132 | 7227 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7228 | static bfd_boolean |
217aa764 | 7229 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7230 | { |
f572a39d AM |
7231 | if (note->descsz == sizeof (pstatus_t) |
7232 | #if defined (HAVE_PXSTATUS_T) | |
7233 | || note->descsz == sizeof (pxstatus_t) | |
7234 | #endif | |
7235 | ) | |
4a938328 MS |
7236 | { |
7237 | pstatus_t pstat; | |
252b5132 | 7238 | |
4a938328 | 7239 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7240 | |
4a938328 MS |
7241 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7242 | } | |
7ee38065 | 7243 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7244 | else if (note->descsz == sizeof (pstatus32_t)) |
7245 | { | |
7246 | /* 64-bit host, 32-bit corefile */ | |
7247 | pstatus32_t pstat; | |
252b5132 | 7248 | |
4a938328 | 7249 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7250 | |
4a938328 MS |
7251 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7252 | } | |
7253 | #endif | |
252b5132 RH |
7254 | /* Could grab some more details from the "representative" |
7255 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7256 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7257 | |
b34976b6 | 7258 | return TRUE; |
252b5132 RH |
7259 | } |
7260 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7261 | ||
252b5132 | 7262 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7263 | static bfd_boolean |
217aa764 | 7264 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7265 | { |
7266 | lwpstatus_t lwpstat; | |
7267 | char buf[100]; | |
c044fabd | 7268 | char *name; |
d4c88bbb | 7269 | size_t len; |
c044fabd | 7270 | asection *sect; |
252b5132 | 7271 | |
f572a39d AM |
7272 | if (note->descsz != sizeof (lwpstat) |
7273 | #if defined (HAVE_LWPXSTATUS_T) | |
7274 | && note->descsz != sizeof (lwpxstatus_t) | |
7275 | #endif | |
7276 | ) | |
b34976b6 | 7277 | return TRUE; |
252b5132 RH |
7278 | |
7279 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7280 | ||
7281 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7282 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7283 | ||
c044fabd | 7284 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7285 | |
7286 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7287 | len = strlen (buf) + 1; |
217aa764 | 7288 | name = bfd_alloc (abfd, len); |
252b5132 | 7289 | if (name == NULL) |
b34976b6 | 7290 | return FALSE; |
d4c88bbb | 7291 | memcpy (name, buf, len); |
252b5132 | 7292 | |
62f3bb11 | 7293 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7294 | if (sect == NULL) |
b34976b6 | 7295 | return FALSE; |
252b5132 RH |
7296 | |
7297 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7298 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7299 | sect->filepos = note->descpos |
7300 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7301 | #endif | |
7302 | ||
7303 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7304 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7305 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7306 | #endif | |
7307 | ||
7308 | sect->flags = SEC_HAS_CONTENTS; | |
7309 | sect->alignment_power = 2; | |
7310 | ||
7311 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7312 | return FALSE; |
252b5132 RH |
7313 | |
7314 | /* Make a ".reg2/999" section */ | |
7315 | ||
7316 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7317 | len = strlen (buf) + 1; |
217aa764 | 7318 | name = bfd_alloc (abfd, len); |
252b5132 | 7319 | if (name == NULL) |
b34976b6 | 7320 | return FALSE; |
d4c88bbb | 7321 | memcpy (name, buf, len); |
252b5132 | 7322 | |
62f3bb11 | 7323 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7324 | if (sect == NULL) |
b34976b6 | 7325 | return FALSE; |
252b5132 RH |
7326 | |
7327 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7328 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7329 | sect->filepos = note->descpos |
7330 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7331 | #endif | |
7332 | ||
7333 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7334 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7335 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7336 | #endif | |
7337 | ||
7338 | sect->flags = SEC_HAS_CONTENTS; | |
7339 | sect->alignment_power = 2; | |
7340 | ||
936e320b | 7341 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7342 | } |
7343 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7344 | ||
16e9c715 | 7345 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7346 | static bfd_boolean |
217aa764 | 7347 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7348 | { |
7349 | char buf[30]; | |
c044fabd | 7350 | char *name; |
d4c88bbb | 7351 | size_t len; |
c044fabd | 7352 | asection *sect; |
16e9c715 NC |
7353 | win32_pstatus_t pstatus; |
7354 | ||
7355 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7356 | return TRUE; |
16e9c715 | 7357 | |
e8eab623 | 7358 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7359 | |
7360 | switch (pstatus.data_type) | |
16e9c715 NC |
7361 | { |
7362 | case NOTE_INFO_PROCESS: | |
7363 | /* FIXME: need to add ->core_command. */ | |
7364 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7365 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7366 | break; |
16e9c715 NC |
7367 | |
7368 | case NOTE_INFO_THREAD: | |
7369 | /* Make a ".reg/999" section. */ | |
1f170678 | 7370 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7371 | |
d4c88bbb | 7372 | len = strlen (buf) + 1; |
217aa764 | 7373 | name = bfd_alloc (abfd, len); |
16e9c715 | 7374 | if (name == NULL) |
b34976b6 | 7375 | return FALSE; |
c044fabd | 7376 | |
d4c88bbb | 7377 | memcpy (name, buf, len); |
16e9c715 | 7378 | |
62f3bb11 | 7379 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7380 | if (sect == NULL) |
b34976b6 | 7381 | return FALSE; |
c044fabd | 7382 | |
eea6121a | 7383 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7384 | sect->filepos = (note->descpos |
7385 | + offsetof (struct win32_pstatus, | |
7386 | data.thread_info.thread_context)); | |
16e9c715 NC |
7387 | sect->flags = SEC_HAS_CONTENTS; |
7388 | sect->alignment_power = 2; | |
7389 | ||
7390 | if (pstatus.data.thread_info.is_active_thread) | |
7391 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7392 | return FALSE; |
16e9c715 NC |
7393 | break; |
7394 | ||
7395 | case NOTE_INFO_MODULE: | |
7396 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7397 | sprintf (buf, ".module/%08lx", |
7398 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7399 | |
d4c88bbb | 7400 | len = strlen (buf) + 1; |
217aa764 | 7401 | name = bfd_alloc (abfd, len); |
16e9c715 | 7402 | if (name == NULL) |
b34976b6 | 7403 | return FALSE; |
c044fabd | 7404 | |
d4c88bbb | 7405 | memcpy (name, buf, len); |
252b5132 | 7406 | |
62f3bb11 | 7407 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7408 | |
16e9c715 | 7409 | if (sect == NULL) |
b34976b6 | 7410 | return FALSE; |
c044fabd | 7411 | |
eea6121a | 7412 | sect->size = note->descsz; |
16e9c715 NC |
7413 | sect->filepos = note->descpos; |
7414 | sect->flags = SEC_HAS_CONTENTS; | |
7415 | sect->alignment_power = 2; | |
7416 | break; | |
7417 | ||
7418 | default: | |
b34976b6 | 7419 | return TRUE; |
16e9c715 NC |
7420 | } |
7421 | ||
b34976b6 | 7422 | return TRUE; |
16e9c715 NC |
7423 | } |
7424 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7425 | |
b34976b6 | 7426 | static bfd_boolean |
217aa764 | 7427 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7428 | { |
9c5bfbb7 | 7429 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7430 | |
252b5132 RH |
7431 | switch (note->type) |
7432 | { | |
7433 | default: | |
b34976b6 | 7434 | return TRUE; |
252b5132 | 7435 | |
252b5132 | 7436 | case NT_PRSTATUS: |
bb0082d6 AM |
7437 | if (bed->elf_backend_grok_prstatus) |
7438 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7439 | return TRUE; |
bb0082d6 | 7440 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7441 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7442 | #else |
b34976b6 | 7443 | return TRUE; |
252b5132 RH |
7444 | #endif |
7445 | ||
7446 | #if defined (HAVE_PSTATUS_T) | |
7447 | case NT_PSTATUS: | |
7448 | return elfcore_grok_pstatus (abfd, note); | |
7449 | #endif | |
7450 | ||
7451 | #if defined (HAVE_LWPSTATUS_T) | |
7452 | case NT_LWPSTATUS: | |
7453 | return elfcore_grok_lwpstatus (abfd, note); | |
7454 | #endif | |
7455 | ||
7456 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7457 | return elfcore_grok_prfpreg (abfd, note); | |
7458 | ||
16e9c715 | 7459 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7460 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7461 | return elfcore_grok_win32pstatus (abfd, note); |
7462 | #endif | |
7463 | ||
c044fabd | 7464 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7465 | if (note->namesz == 6 |
7466 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7467 | return elfcore_grok_prxfpreg (abfd, note); |
7468 | else | |
b34976b6 | 7469 | return TRUE; |
ff08c6bb | 7470 | |
252b5132 RH |
7471 | case NT_PRPSINFO: |
7472 | case NT_PSINFO: | |
bb0082d6 AM |
7473 | if (bed->elf_backend_grok_psinfo) |
7474 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7475 | return TRUE; |
bb0082d6 | 7476 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7477 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7478 | #else |
b34976b6 | 7479 | return TRUE; |
252b5132 | 7480 | #endif |
3333a7c3 RM |
7481 | |
7482 | case NT_AUXV: | |
7483 | { | |
62f3bb11 | 7484 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7485 | |
7486 | if (sect == NULL) | |
7487 | return FALSE; | |
eea6121a | 7488 | sect->size = note->descsz; |
3333a7c3 RM |
7489 | sect->filepos = note->descpos; |
7490 | sect->flags = SEC_HAS_CONTENTS; | |
7491 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7492 | ||
7493 | return TRUE; | |
7494 | } | |
252b5132 RH |
7495 | } |
7496 | } | |
7497 | ||
b34976b6 | 7498 | static bfd_boolean |
217aa764 | 7499 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7500 | { |
7501 | char *cp; | |
7502 | ||
7503 | cp = strchr (note->namedata, '@'); | |
7504 | if (cp != NULL) | |
7505 | { | |
d2b64500 | 7506 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7507 | return TRUE; |
50b2bdb7 | 7508 | } |
b34976b6 | 7509 | return FALSE; |
50b2bdb7 AM |
7510 | } |
7511 | ||
b34976b6 | 7512 | static bfd_boolean |
217aa764 | 7513 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7514 | { |
7515 | ||
7516 | /* Signal number at offset 0x08. */ | |
7517 | elf_tdata (abfd)->core_signal | |
7518 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7519 | ||
7520 | /* Process ID at offset 0x50. */ | |
7521 | elf_tdata (abfd)->core_pid | |
7522 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7523 | ||
7524 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7525 | elf_tdata (abfd)->core_command | |
7526 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7527 | ||
7720ba9f MK |
7528 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7529 | note); | |
50b2bdb7 AM |
7530 | } |
7531 | ||
b34976b6 | 7532 | static bfd_boolean |
217aa764 | 7533 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7534 | { |
7535 | int lwp; | |
7536 | ||
7537 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7538 | elf_tdata (abfd)->core_lwpid = lwp; | |
7539 | ||
b4db1224 | 7540 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7541 | { |
7542 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7543 | find this note before any of the others, which is fine, | |
7544 | since the kernel writes this note out first when it | |
7545 | creates a core file. */ | |
47d9a591 | 7546 | |
50b2bdb7 AM |
7547 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7548 | } | |
7549 | ||
b4db1224 JT |
7550 | /* As of Jan 2002 there are no other machine-independent notes |
7551 | defined for NetBSD core files. If the note type is less | |
7552 | than the start of the machine-dependent note types, we don't | |
7553 | understand it. */ | |
47d9a591 | 7554 | |
b4db1224 | 7555 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7556 | return TRUE; |
50b2bdb7 AM |
7557 | |
7558 | ||
7559 | switch (bfd_get_arch (abfd)) | |
7560 | { | |
7561 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7562 | PT_GETFPREGS == mach+2. */ | |
7563 | ||
7564 | case bfd_arch_alpha: | |
7565 | case bfd_arch_sparc: | |
7566 | switch (note->type) | |
7567 | { | |
b4db1224 | 7568 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7569 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7570 | ||
b4db1224 | 7571 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7572 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7573 | ||
7574 | default: | |
b34976b6 | 7575 | return TRUE; |
50b2bdb7 AM |
7576 | } |
7577 | ||
7578 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7579 | PT_GETFPREGS == mach+3. */ | |
7580 | ||
7581 | default: | |
7582 | switch (note->type) | |
7583 | { | |
b4db1224 | 7584 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7585 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7586 | ||
b4db1224 | 7587 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7588 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7589 | ||
7590 | default: | |
b34976b6 | 7591 | return TRUE; |
50b2bdb7 AM |
7592 | } |
7593 | } | |
7594 | /* NOTREACHED */ | |
7595 | } | |
7596 | ||
07c6e936 | 7597 | static bfd_boolean |
217aa764 | 7598 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7599 | { |
7600 | void *ddata = note->descdata; | |
7601 | char buf[100]; | |
7602 | char *name; | |
7603 | asection *sect; | |
f8843e87 AM |
7604 | short sig; |
7605 | unsigned flags; | |
07c6e936 NC |
7606 | |
7607 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7608 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7609 | ||
f8843e87 AM |
7610 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7611 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7612 | ||
7613 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7614 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7615 | |
7616 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7617 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7618 | { | |
7619 | elf_tdata (abfd)->core_signal = sig; | |
7620 | elf_tdata (abfd)->core_lwpid = *tid; | |
7621 | } | |
07c6e936 | 7622 | |
f8843e87 AM |
7623 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7624 | do not come from signals so we make sure we set the current | |
7625 | thread just in case. */ | |
7626 | if (flags & 0x00000080) | |
7627 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7628 | |
7629 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7630 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7631 | |
217aa764 | 7632 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7633 | if (name == NULL) |
7634 | return FALSE; | |
7635 | strcpy (name, buf); | |
7636 | ||
62f3bb11 | 7637 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7638 | if (sect == NULL) |
7639 | return FALSE; | |
7640 | ||
eea6121a | 7641 | sect->size = note->descsz; |
07c6e936 NC |
7642 | sect->filepos = note->descpos; |
7643 | sect->flags = SEC_HAS_CONTENTS; | |
7644 | sect->alignment_power = 2; | |
7645 | ||
7646 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7647 | } | |
7648 | ||
7649 | static bfd_boolean | |
d69f560c KW |
7650 | elfcore_grok_nto_regs (bfd *abfd, |
7651 | Elf_Internal_Note *note, | |
7652 | pid_t tid, | |
7653 | char *base) | |
07c6e936 NC |
7654 | { |
7655 | char buf[100]; | |
7656 | char *name; | |
7657 | asection *sect; | |
7658 | ||
d69f560c | 7659 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7660 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7661 | |
217aa764 | 7662 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7663 | if (name == NULL) |
7664 | return FALSE; | |
7665 | strcpy (name, buf); | |
7666 | ||
62f3bb11 | 7667 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7668 | if (sect == NULL) |
7669 | return FALSE; | |
7670 | ||
eea6121a | 7671 | sect->size = note->descsz; |
07c6e936 NC |
7672 | sect->filepos = note->descpos; |
7673 | sect->flags = SEC_HAS_CONTENTS; | |
7674 | sect->alignment_power = 2; | |
7675 | ||
f8843e87 AM |
7676 | /* This is the current thread. */ |
7677 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7678 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7679 | |
7680 | return TRUE; | |
07c6e936 NC |
7681 | } |
7682 | ||
7683 | #define BFD_QNT_CORE_INFO 7 | |
7684 | #define BFD_QNT_CORE_STATUS 8 | |
7685 | #define BFD_QNT_CORE_GREG 9 | |
7686 | #define BFD_QNT_CORE_FPREG 10 | |
7687 | ||
7688 | static bfd_boolean | |
217aa764 | 7689 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7690 | { |
7691 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7692 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7693 | function. */ |
7694 | static pid_t tid = 1; | |
7695 | ||
7696 | switch (note->type) | |
7697 | { | |
d69f560c KW |
7698 | case BFD_QNT_CORE_INFO: |
7699 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7700 | case BFD_QNT_CORE_STATUS: | |
7701 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7702 | case BFD_QNT_CORE_GREG: | |
7703 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7704 | case BFD_QNT_CORE_FPREG: | |
7705 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7706 | default: | |
7707 | return TRUE; | |
07c6e936 NC |
7708 | } |
7709 | } | |
7710 | ||
7c76fa91 MS |
7711 | /* Function: elfcore_write_note |
7712 | ||
47d9a591 | 7713 | Inputs: |
7c76fa91 MS |
7714 | buffer to hold note |
7715 | name of note | |
7716 | type of note | |
7717 | data for note | |
7718 | size of data for note | |
7719 | ||
7720 | Return: | |
7721 | End of buffer containing note. */ | |
7722 | ||
7723 | char * | |
217aa764 AM |
7724 | elfcore_write_note (bfd *abfd, |
7725 | char *buf, | |
7726 | int *bufsiz, | |
7727 | const char *name, | |
7728 | int type, | |
7729 | const void *input, | |
7730 | int size) | |
7c76fa91 MS |
7731 | { |
7732 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7733 | size_t namesz; |
7734 | size_t pad; | |
7735 | size_t newspace; | |
7c76fa91 MS |
7736 | char *p, *dest; |
7737 | ||
d4c88bbb AM |
7738 | namesz = 0; |
7739 | pad = 0; | |
7740 | if (name != NULL) | |
7741 | { | |
9c5bfbb7 | 7742 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7743 | |
7744 | namesz = strlen (name) + 1; | |
7745 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7746 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7747 | } |
7748 | ||
5de3bf90 | 7749 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7750 | |
7c76fa91 MS |
7751 | p = realloc (buf, *bufsiz + newspace); |
7752 | dest = p + *bufsiz; | |
7753 | *bufsiz += newspace; | |
7754 | xnp = (Elf_External_Note *) dest; | |
7755 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7756 | H_PUT_32 (abfd, size, xnp->descsz); | |
7757 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7758 | dest = xnp->name; |
7759 | if (name != NULL) | |
7760 | { | |
7761 | memcpy (dest, name, namesz); | |
7762 | dest += namesz; | |
7763 | while (pad != 0) | |
7764 | { | |
7765 | *dest++ = '\0'; | |
7766 | --pad; | |
7767 | } | |
7768 | } | |
7769 | memcpy (dest, input, size); | |
7c76fa91 MS |
7770 | return p; |
7771 | } | |
7772 | ||
7773 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7774 | char * | |
217aa764 AM |
7775 | elfcore_write_prpsinfo (bfd *abfd, |
7776 | char *buf, | |
7777 | int *bufsiz, | |
7778 | const char *fname, | |
7779 | const char *psargs) | |
7c76fa91 MS |
7780 | { |
7781 | int note_type; | |
7782 | char *note_name = "CORE"; | |
7783 | ||
7784 | #if defined (HAVE_PSINFO_T) | |
7785 | psinfo_t data; | |
7786 | note_type = NT_PSINFO; | |
7787 | #else | |
7788 | prpsinfo_t data; | |
7789 | note_type = NT_PRPSINFO; | |
7790 | #endif | |
7791 | ||
7792 | memset (&data, 0, sizeof (data)); | |
7793 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7794 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7795 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7796 | note_name, note_type, &data, sizeof (data)); |
7797 | } | |
7798 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7799 | ||
7800 | #if defined (HAVE_PRSTATUS_T) | |
7801 | char * | |
217aa764 AM |
7802 | elfcore_write_prstatus (bfd *abfd, |
7803 | char *buf, | |
7804 | int *bufsiz, | |
7805 | long pid, | |
7806 | int cursig, | |
7807 | const void *gregs) | |
7c76fa91 MS |
7808 | { |
7809 | prstatus_t prstat; | |
7810 | char *note_name = "CORE"; | |
7811 | ||
7812 | memset (&prstat, 0, sizeof (prstat)); | |
7813 | prstat.pr_pid = pid; | |
7814 | prstat.pr_cursig = cursig; | |
c106e334 | 7815 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7816 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7817 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7818 | } | |
7819 | #endif /* HAVE_PRSTATUS_T */ | |
7820 | ||
51316059 MS |
7821 | #if defined (HAVE_LWPSTATUS_T) |
7822 | char * | |
217aa764 AM |
7823 | elfcore_write_lwpstatus (bfd *abfd, |
7824 | char *buf, | |
7825 | int *bufsiz, | |
7826 | long pid, | |
7827 | int cursig, | |
7828 | const void *gregs) | |
51316059 MS |
7829 | { |
7830 | lwpstatus_t lwpstat; | |
7831 | char *note_name = "CORE"; | |
7832 | ||
7833 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7834 | lwpstat.pr_lwpid = pid >> 16; | |
7835 | lwpstat.pr_cursig = cursig; | |
7836 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7837 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7838 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7839 | #if !defined(gregs) | |
7840 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7841 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7842 | #else | |
7843 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7844 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7845 | #endif | |
7846 | #endif | |
47d9a591 | 7847 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7848 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7849 | } | |
7850 | #endif /* HAVE_LWPSTATUS_T */ | |
7851 | ||
7c76fa91 MS |
7852 | #if defined (HAVE_PSTATUS_T) |
7853 | char * | |
217aa764 AM |
7854 | elfcore_write_pstatus (bfd *abfd, |
7855 | char *buf, | |
7856 | int *bufsiz, | |
7857 | long pid, | |
7858 | int cursig, | |
7859 | const void *gregs) | |
7c76fa91 MS |
7860 | { |
7861 | pstatus_t pstat; | |
7862 | char *note_name = "CORE"; | |
7863 | ||
51316059 MS |
7864 | memset (&pstat, 0, sizeof (pstat)); |
7865 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7866 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7867 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7868 | return buf; | |
7c76fa91 MS |
7869 | } |
7870 | #endif /* HAVE_PSTATUS_T */ | |
7871 | ||
7872 | char * | |
217aa764 AM |
7873 | elfcore_write_prfpreg (bfd *abfd, |
7874 | char *buf, | |
7875 | int *bufsiz, | |
7876 | const void *fpregs, | |
7877 | int size) | |
7c76fa91 MS |
7878 | { |
7879 | char *note_name = "CORE"; | |
47d9a591 | 7880 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7881 | note_name, NT_FPREGSET, fpregs, size); |
7882 | } | |
7883 | ||
7884 | char * | |
217aa764 AM |
7885 | elfcore_write_prxfpreg (bfd *abfd, |
7886 | char *buf, | |
7887 | int *bufsiz, | |
7888 | const void *xfpregs, | |
7889 | int size) | |
7c76fa91 MS |
7890 | { |
7891 | char *note_name = "LINUX"; | |
47d9a591 | 7892 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7893 | note_name, NT_PRXFPREG, xfpregs, size); |
7894 | } | |
7895 | ||
b34976b6 | 7896 | static bfd_boolean |
217aa764 | 7897 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7898 | { |
c044fabd KH |
7899 | char *buf; |
7900 | char *p; | |
252b5132 RH |
7901 | |
7902 | if (size <= 0) | |
b34976b6 | 7903 | return TRUE; |
252b5132 | 7904 | |
dc810e39 | 7905 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7906 | return FALSE; |
252b5132 | 7907 | |
dc810e39 | 7908 | buf = bfd_malloc (size); |
252b5132 | 7909 | if (buf == NULL) |
b34976b6 | 7910 | return FALSE; |
252b5132 | 7911 | |
dc810e39 | 7912 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7913 | { |
7914 | error: | |
7915 | free (buf); | |
b34976b6 | 7916 | return FALSE; |
252b5132 RH |
7917 | } |
7918 | ||
7919 | p = buf; | |
7920 | while (p < buf + size) | |
7921 | { | |
c044fabd KH |
7922 | /* FIXME: bad alignment assumption. */ |
7923 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7924 | Elf_Internal_Note in; |
7925 | ||
dc810e39 | 7926 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7927 | |
dc810e39 | 7928 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7929 | in.namedata = xnp->name; |
7930 | ||
dc810e39 | 7931 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7932 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7933 | in.descpos = offset + (in.descdata - buf); | |
7934 | ||
50b2bdb7 AM |
7935 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7936 | { | |
7937 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7938 | goto error; | |
7939 | } | |
07c6e936 NC |
7940 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7941 | { | |
7942 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7943 | goto error; | |
7944 | } | |
50b2bdb7 AM |
7945 | else |
7946 | { | |
7947 | if (! elfcore_grok_note (abfd, &in)) | |
7948 | goto error; | |
7949 | } | |
252b5132 RH |
7950 | |
7951 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7952 | } | |
7953 | ||
7954 | free (buf); | |
b34976b6 | 7955 | return TRUE; |
252b5132 | 7956 | } |
98d8431c JB |
7957 | \f |
7958 | /* Providing external access to the ELF program header table. */ | |
7959 | ||
7960 | /* Return an upper bound on the number of bytes required to store a | |
7961 | copy of ABFD's program header table entries. Return -1 if an error | |
7962 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7963 | |
98d8431c | 7964 | long |
217aa764 | 7965 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7966 | { |
7967 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7968 | { | |
7969 | bfd_set_error (bfd_error_wrong_format); | |
7970 | return -1; | |
7971 | } | |
7972 | ||
936e320b | 7973 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7974 | } |
7975 | ||
98d8431c JB |
7976 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7977 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7978 | defined in include/elf/internal.h. To find out how large the | |
7979 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7980 | ||
7981 | Return the number of program header table entries read, or -1 if an | |
7982 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7983 | |
98d8431c | 7984 | int |
217aa764 | 7985 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7986 | { |
7987 | int num_phdrs; | |
7988 | ||
7989 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7990 | { | |
7991 | bfd_set_error (bfd_error_wrong_format); | |
7992 | return -1; | |
7993 | } | |
7994 | ||
7995 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7996 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7997 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7998 | ||
7999 | return num_phdrs; | |
8000 | } | |
ae4221d7 L |
8001 | |
8002 | void | |
217aa764 | 8003 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 8004 | { |
d3b05f8d | 8005 | #ifdef BFD64 |
ae4221d7 L |
8006 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8007 | ||
8008 | i_ehdrp = elf_elfheader (abfd); | |
8009 | if (i_ehdrp == NULL) | |
8010 | sprintf_vma (buf, value); | |
8011 | else | |
8012 | { | |
8013 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8014 | { |
ae4221d7 | 8015 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8016 | sprintf (buf, "%016lx", value); |
ae4221d7 | 8017 | #else |
cc55aec9 AM |
8018 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
8019 | _bfd_int64_low (value)); | |
ae4221d7 | 8020 | #endif |
cc55aec9 | 8021 | } |
ae4221d7 L |
8022 | else |
8023 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
8024 | } | |
d3b05f8d L |
8025 | #else |
8026 | sprintf_vma (buf, value); | |
8027 | #endif | |
ae4221d7 L |
8028 | } |
8029 | ||
8030 | void | |
217aa764 | 8031 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 8032 | { |
d3b05f8d | 8033 | #ifdef BFD64 |
ae4221d7 L |
8034 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
8035 | ||
8036 | i_ehdrp = elf_elfheader (abfd); | |
8037 | if (i_ehdrp == NULL) | |
8038 | fprintf_vma ((FILE *) stream, value); | |
8039 | else | |
8040 | { | |
8041 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 8042 | { |
ae4221d7 | 8043 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 8044 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 8045 | #else |
cc55aec9 AM |
8046 | fprintf ((FILE *) stream, "%08lx%08lx", |
8047 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 8048 | #endif |
cc55aec9 | 8049 | } |
ae4221d7 L |
8050 | else |
8051 | fprintf ((FILE *) stream, "%08lx", | |
8052 | (unsigned long) (value & 0xffffffff)); | |
8053 | } | |
d3b05f8d L |
8054 | #else |
8055 | fprintf_vma ((FILE *) stream, value); | |
8056 | #endif | |
ae4221d7 | 8057 | } |
db6751f2 JJ |
8058 | |
8059 | enum elf_reloc_type_class | |
217aa764 | 8060 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8061 | { |
8062 | return reloc_class_normal; | |
8063 | } | |
f8df10f4 | 8064 | |
47d9a591 | 8065 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8066 | relocation against a local symbol. */ |
8067 | ||
8068 | bfd_vma | |
217aa764 AM |
8069 | _bfd_elf_rela_local_sym (bfd *abfd, |
8070 | Elf_Internal_Sym *sym, | |
8517fae7 | 8071 | asection **psec, |
217aa764 | 8072 | Elf_Internal_Rela *rel) |
f8df10f4 | 8073 | { |
8517fae7 | 8074 | asection *sec = *psec; |
f8df10f4 JJ |
8075 | bfd_vma relocation; |
8076 | ||
8077 | relocation = (sec->output_section->vma | |
8078 | + sec->output_offset | |
8079 | + sym->st_value); | |
8080 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8081 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8082 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8083 | { |
f8df10f4 | 8084 | rel->r_addend = |
8517fae7 | 8085 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8086 | elf_section_data (sec)->sec_info, |
753731ee AM |
8087 | sym->st_value + rel->r_addend); |
8088 | if (sec != *psec) | |
8089 | { | |
8090 | /* If we have changed the section, and our original section is | |
8091 | marked with SEC_EXCLUDE, it means that the original | |
8092 | SEC_MERGE section has been completely subsumed in some | |
8093 | other SEC_MERGE section. In this case, we need to leave | |
8094 | some info around for --emit-relocs. */ | |
8095 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8096 | sec->kept_section = *psec; | |
8097 | sec = *psec; | |
8098 | } | |
8517fae7 AM |
8099 | rel->r_addend -= relocation; |
8100 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8101 | } |
8102 | return relocation; | |
8103 | } | |
c629eae0 JJ |
8104 | |
8105 | bfd_vma | |
217aa764 AM |
8106 | _bfd_elf_rel_local_sym (bfd *abfd, |
8107 | Elf_Internal_Sym *sym, | |
8108 | asection **psec, | |
8109 | bfd_vma addend) | |
47d9a591 | 8110 | { |
c629eae0 JJ |
8111 | asection *sec = *psec; |
8112 | ||
68bfbfcc | 8113 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8114 | return sym->st_value + addend; |
8115 | ||
8116 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8117 | elf_section_data (sec)->sec_info, |
753731ee | 8118 | sym->st_value + addend); |
c629eae0 JJ |
8119 | } |
8120 | ||
8121 | bfd_vma | |
217aa764 | 8122 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8123 | struct bfd_link_info *info, |
217aa764 AM |
8124 | asection *sec, |
8125 | bfd_vma offset) | |
c629eae0 | 8126 | { |
68bfbfcc | 8127 | switch (sec->sec_info_type) |
65765700 JJ |
8128 | { |
8129 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8130 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8131 | offset); | |
65765700 | 8132 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8133 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8134 | default: |
8135 | return offset; | |
8136 | } | |
c629eae0 | 8137 | } |
3333a7c3 RM |
8138 | \f |
8139 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8140 | reconstruct an ELF file by reading the segments out of remote memory | |
8141 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8142 | points to. If not null, *LOADBASEP is filled in with the difference | |
8143 | between the VMAs from which the segments were read, and the VMAs the | |
8144 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8145 | ||
8146 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8147 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8148 | should return zero on success or an `errno' code on failure. TEMPL must | |
8149 | be a BFD for an ELF target with the word size and byte order found in | |
8150 | the remote memory. */ | |
8151 | ||
8152 | bfd * | |
217aa764 AM |
8153 | bfd_elf_bfd_from_remote_memory |
8154 | (bfd *templ, | |
8155 | bfd_vma ehdr_vma, | |
8156 | bfd_vma *loadbasep, | |
f075ee0c | 8157 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8158 | { |
8159 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8160 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8161 | } | |
4c45e5c9 JJ |
8162 | \f |
8163 | long | |
c9727e01 AM |
8164 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8165 | long symcount ATTRIBUTE_UNUSED, | |
8166 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8167 | long dynsymcount, |
c9727e01 AM |
8168 | asymbol **dynsyms, |
8169 | asymbol **ret) | |
4c45e5c9 JJ |
8170 | { |
8171 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8172 | asection *relplt; | |
8173 | asymbol *s; | |
8174 | const char *relplt_name; | |
8175 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8176 | arelent *p; | |
8177 | long count, i, n; | |
8178 | size_t size; | |
8179 | Elf_Internal_Shdr *hdr; | |
8180 | char *names; | |
8181 | asection *plt; | |
8182 | ||
8615f3f2 AM |
8183 | *ret = NULL; |
8184 | ||
90e3cdf2 JJ |
8185 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8186 | return 0; | |
8187 | ||
8615f3f2 AM |
8188 | if (dynsymcount <= 0) |
8189 | return 0; | |
8190 | ||
4c45e5c9 JJ |
8191 | if (!bed->plt_sym_val) |
8192 | return 0; | |
8193 | ||
8194 | relplt_name = bed->relplt_name; | |
8195 | if (relplt_name == NULL) | |
8196 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8197 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8198 | if (relplt == NULL) | |
8199 | return 0; | |
8200 | ||
8201 | hdr = &elf_section_data (relplt)->this_hdr; | |
8202 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8203 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8204 | return 0; | |
8205 | ||
8206 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8207 | if (plt == NULL) | |
8208 | return 0; | |
8209 | ||
8210 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8211 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8212 | return -1; |
8213 | ||
eea6121a | 8214 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8215 | size = count * sizeof (asymbol); |
8216 | p = relplt->relocation; | |
8217 | for (i = 0; i < count; i++, s++, p++) | |
8218 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8219 | ||
8220 | s = *ret = bfd_malloc (size); | |
8221 | if (s == NULL) | |
8222 | return -1; | |
8223 | ||
8224 | names = (char *) (s + count); | |
8225 | p = relplt->relocation; | |
8226 | n = 0; | |
8227 | for (i = 0; i < count; i++, s++, p++) | |
8228 | { | |
8229 | size_t len; | |
8230 | bfd_vma addr; | |
8231 | ||
8232 | addr = bed->plt_sym_val (i, plt, p); | |
8233 | if (addr == (bfd_vma) -1) | |
8234 | continue; | |
8235 | ||
8236 | *s = **p->sym_ptr_ptr; | |
8237 | s->section = plt; | |
8238 | s->value = addr - plt->vma; | |
8239 | s->name = names; | |
8240 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8241 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8242 | names += len; | |
8243 | memcpy (names, "@plt", sizeof ("@plt")); | |
8244 | names += sizeof ("@plt"); | |
8245 | ++n; | |
8246 | } | |
8247 | ||
8248 | return n; | |
8249 | } | |
3d7f7666 L |
8250 | |
8251 | /* Sort symbol by binding and section. We want to put definitions | |
8252 | sorted by section at the beginning. */ | |
8253 | ||
8254 | static int | |
8255 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8256 | { | |
8257 | const Elf_Internal_Sym *s1; | |
8258 | const Elf_Internal_Sym *s2; | |
8259 | int shndx; | |
8260 | ||
8261 | /* Make sure that undefined symbols are at the end. */ | |
8262 | s1 = (const Elf_Internal_Sym *) arg1; | |
8263 | if (s1->st_shndx == SHN_UNDEF) | |
8264 | return 1; | |
8265 | s2 = (const Elf_Internal_Sym *) arg2; | |
8266 | if (s2->st_shndx == SHN_UNDEF) | |
8267 | return -1; | |
8268 | ||
8269 | /* Sorted by section index. */ | |
8270 | shndx = s1->st_shndx - s2->st_shndx; | |
8271 | if (shndx != 0) | |
8272 | return shndx; | |
8273 | ||
8274 | /* Sorted by binding. */ | |
8275 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8276 | } | |
8277 | ||
8278 | struct elf_symbol | |
8279 | { | |
8280 | Elf_Internal_Sym *sym; | |
8281 | const char *name; | |
8282 | }; | |
8283 | ||
8284 | static int | |
8285 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8286 | { | |
8287 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8288 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8289 | return strcmp (s1->name, s2->name); | |
8290 | } | |
8291 | ||
8292 | /* Check if 2 sections define the same set of local and global | |
8293 | symbols. */ | |
8294 | ||
8295 | bfd_boolean | |
8296 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8297 | { | |
8298 | bfd *bfd1, *bfd2; | |
8299 | const struct elf_backend_data *bed1, *bed2; | |
8300 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8301 | bfd_size_type symcount1, symcount2; | |
8302 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8303 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8304 | Elf_Internal_Sym *isymend; | |
8305 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8306 | bfd_size_type count1, count2, i; | |
8307 | int shndx1, shndx2; | |
8308 | bfd_boolean result; | |
8309 | ||
8310 | bfd1 = sec1->owner; | |
8311 | bfd2 = sec2->owner; | |
8312 | ||
8313 | /* If both are .gnu.linkonce sections, they have to have the same | |
8314 | section name. */ | |
8315 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8316 | sizeof ".gnu.linkonce" - 1) == 0 | |
8317 | && strncmp (sec2->name, ".gnu.linkonce", | |
8318 | sizeof ".gnu.linkonce" - 1) == 0) | |
8319 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8320 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8321 | ||
8322 | /* Both sections have to be in ELF. */ | |
8323 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8324 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8325 | return FALSE; | |
8326 | ||
8327 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8328 | return FALSE; | |
8329 | ||
8330 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8331 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8332 | { | |
8333 | /* If both are members of section groups, they have to have the | |
8334 | same group name. */ | |
8335 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8336 | return FALSE; | |
8337 | } | |
8338 | ||
8339 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8340 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8341 | if (shndx1 == -1 || shndx2 == -1) | |
8342 | return FALSE; | |
8343 | ||
8344 | bed1 = get_elf_backend_data (bfd1); | |
8345 | bed2 = get_elf_backend_data (bfd2); | |
8346 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8347 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8348 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8349 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8350 | ||
8351 | if (symcount1 == 0 || symcount2 == 0) | |
8352 | return FALSE; | |
8353 | ||
8354 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8355 | NULL, NULL, NULL); | |
8356 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8357 | NULL, NULL, NULL); | |
8358 | ||
8359 | result = FALSE; | |
8360 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8361 | goto done; | |
8362 | ||
8363 | /* Sort symbols by binding and section. Global definitions are at | |
8364 | the beginning. */ | |
8365 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8366 | elf_sort_elf_symbol); | |
8367 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8368 | elf_sort_elf_symbol); | |
8369 | ||
8370 | /* Count definitions in the section. */ | |
8371 | count1 = 0; | |
8372 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8373 | isym < isymend; isym++) | |
8374 | { | |
8375 | if (isym->st_shndx == (unsigned int) shndx1) | |
8376 | { | |
8377 | if (count1 == 0) | |
8378 | isymstart1 = isym; | |
8379 | count1++; | |
8380 | } | |
8381 | ||
8382 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8383 | break; | |
8384 | } | |
8385 | ||
8386 | count2 = 0; | |
8387 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8388 | isym < isymend; isym++) | |
8389 | { | |
8390 | if (isym->st_shndx == (unsigned int) shndx2) | |
8391 | { | |
8392 | if (count2 == 0) | |
8393 | isymstart2 = isym; | |
8394 | count2++; | |
8395 | } | |
8396 | ||
8397 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8398 | break; | |
8399 | } | |
8400 | ||
8401 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8402 | goto done; | |
8403 | ||
8404 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8405 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8406 | ||
8407 | if (symtable1 == NULL || symtable2 == NULL) | |
8408 | goto done; | |
8409 | ||
8410 | symp = symtable1; | |
8411 | for (isym = isymstart1, isymend = isym + count1; | |
8412 | isym < isymend; isym++) | |
8413 | { | |
8414 | symp->sym = isym; | |
8415 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8416 | hdr1->sh_link, | |
8417 | isym->st_name); | |
8418 | symp++; | |
8419 | } | |
8420 | ||
8421 | symp = symtable2; | |
8422 | for (isym = isymstart2, isymend = isym + count1; | |
8423 | isym < isymend; isym++) | |
8424 | { | |
8425 | symp->sym = isym; | |
8426 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8427 | hdr2->sh_link, | |
8428 | isym->st_name); | |
8429 | symp++; | |
8430 | } | |
8431 | ||
8432 | /* Sort symbol by name. */ | |
8433 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8434 | elf_sym_name_compare); | |
8435 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8436 | elf_sym_name_compare); | |
8437 | ||
8438 | for (i = 0; i < count1; i++) | |
8439 | /* Two symbols must have the same binding, type and name. */ | |
8440 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8441 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8442 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8443 | goto done; | |
8444 | ||
8445 | result = TRUE; | |
8446 | ||
8447 | done: | |
8448 | if (symtable1) | |
8449 | free (symtable1); | |
8450 | if (symtable2) | |
8451 | free (symtable2); | |
8452 | if (isymbuf1) | |
8453 | free (isymbuf1); | |
8454 | if (isymbuf2) | |
8455 | free (isymbuf2); | |
8456 | ||
8457 | return result; | |
8458 | } | |
3b22753a L |
8459 | |
8460 | /* It is only used by x86-64 so far. */ | |
8461 | asection _bfd_elf_large_com_section | |
8462 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
8463 | SEC_IS_COMMON, NULL, NULL, "LARGE_COMMON", | |
8464 | 0); |