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Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
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 | ||
209 | /* Read a specified number of bytes at a specified offset in an ELF | |
210 | file, into a newly allocated buffer, and return a pointer to the | |
c044fabd | 211 | buffer. */ |
252b5132 | 212 | |
f075ee0c | 213 | static bfd_byte * |
217aa764 | 214 | elf_read (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 215 | { |
f075ee0c | 216 | bfd_byte *buf; |
252b5132 RH |
217 | |
218 | if ((buf = bfd_alloc (abfd, size)) == NULL) | |
219 | return NULL; | |
dc810e39 | 220 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
252b5132 | 221 | return NULL; |
217aa764 | 222 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
223 | { |
224 | if (bfd_get_error () != bfd_error_system_call) | |
225 | bfd_set_error (bfd_error_file_truncated); | |
226 | return NULL; | |
227 | } | |
228 | return buf; | |
229 | } | |
230 | ||
b34976b6 | 231 | bfd_boolean |
217aa764 | 232 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 233 | { |
c044fabd KH |
234 | /* This just does initialization. */ |
235 | /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */ | |
217aa764 | 236 | elf_tdata (abfd) = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); |
252b5132 | 237 | if (elf_tdata (abfd) == 0) |
b34976b6 | 238 | return FALSE; |
c044fabd KH |
239 | /* Since everything is done at close time, do we need any |
240 | initialization? */ | |
252b5132 | 241 | |
b34976b6 | 242 | return TRUE; |
252b5132 RH |
243 | } |
244 | ||
b34976b6 | 245 | bfd_boolean |
217aa764 | 246 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 247 | { |
c044fabd | 248 | /* I think this can be done just like an object file. */ |
252b5132 RH |
249 | return bfd_elf_mkobject (abfd); |
250 | } | |
251 | ||
252 | char * | |
217aa764 | 253 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
254 | { |
255 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 256 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
257 | file_ptr offset; |
258 | bfd_size_type shstrtabsize; | |
252b5132 RH |
259 | |
260 | i_shdrp = elf_elfsections (abfd); | |
261 | if (i_shdrp == 0 || i_shdrp[shindex] == 0) | |
f075ee0c | 262 | return NULL; |
252b5132 | 263 | |
f075ee0c | 264 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
265 | if (shstrtab == NULL) |
266 | { | |
c044fabd | 267 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
268 | offset = i_shdrp[shindex]->sh_offset; |
269 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
270 | shstrtab = elf_read (abfd, offset, shstrtabsize); | |
217aa764 | 271 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 272 | } |
f075ee0c | 273 | return (char *) shstrtab; |
252b5132 RH |
274 | } |
275 | ||
276 | char * | |
217aa764 AM |
277 | bfd_elf_string_from_elf_section (bfd *abfd, |
278 | unsigned int shindex, | |
279 | unsigned int strindex) | |
252b5132 RH |
280 | { |
281 | Elf_Internal_Shdr *hdr; | |
282 | ||
283 | if (strindex == 0) | |
284 | return ""; | |
285 | ||
286 | hdr = elf_elfsections (abfd)[shindex]; | |
287 | ||
288 | if (hdr->contents == NULL | |
289 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
290 | return NULL; | |
291 | ||
292 | if (strindex >= hdr->sh_size) | |
293 | { | |
1b3a8575 | 294 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 295 | (*_bfd_error_handler) |
d003868e AM |
296 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
297 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 298 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 299 | ? ".shstrtab" |
1b3a8575 | 300 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
301 | return ""; |
302 | } | |
303 | ||
304 | return ((char *) hdr->contents) + strindex; | |
305 | } | |
306 | ||
6cdc0ccc AM |
307 | /* Read and convert symbols to internal format. |
308 | SYMCOUNT specifies the number of symbols to read, starting from | |
309 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
310 | are non-NULL, they are used to store the internal symbols, external | |
311 | symbols, and symbol section index extensions, respectively. */ | |
312 | ||
313 | Elf_Internal_Sym * | |
217aa764 AM |
314 | bfd_elf_get_elf_syms (bfd *ibfd, |
315 | Elf_Internal_Shdr *symtab_hdr, | |
316 | size_t symcount, | |
317 | size_t symoffset, | |
318 | Elf_Internal_Sym *intsym_buf, | |
319 | void *extsym_buf, | |
320 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
321 | { |
322 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 323 | void *alloc_ext; |
df622259 | 324 | const bfd_byte *esym; |
6cdc0ccc AM |
325 | Elf_External_Sym_Shndx *alloc_extshndx; |
326 | Elf_External_Sym_Shndx *shndx; | |
327 | Elf_Internal_Sym *isym; | |
328 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 329 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
330 | size_t extsym_size; |
331 | bfd_size_type amt; | |
332 | file_ptr pos; | |
333 | ||
334 | if (symcount == 0) | |
335 | return intsym_buf; | |
336 | ||
337 | /* Normal syms might have section extension entries. */ | |
338 | shndx_hdr = NULL; | |
339 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
340 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
341 | ||
342 | /* Read the symbols. */ | |
343 | alloc_ext = NULL; | |
344 | alloc_extshndx = NULL; | |
345 | bed = get_elf_backend_data (ibfd); | |
346 | extsym_size = bed->s->sizeof_sym; | |
347 | amt = symcount * extsym_size; | |
348 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
349 | if (extsym_buf == NULL) | |
350 | { | |
351 | alloc_ext = bfd_malloc (amt); | |
352 | extsym_buf = alloc_ext; | |
353 | } | |
354 | if (extsym_buf == NULL | |
355 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
356 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
357 | { | |
358 | intsym_buf = NULL; | |
359 | goto out; | |
360 | } | |
361 | ||
362 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
363 | extshndx_buf = NULL; | |
364 | else | |
365 | { | |
366 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
367 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
368 | if (extshndx_buf == NULL) | |
369 | { | |
217aa764 | 370 | alloc_extshndx = bfd_malloc (amt); |
6cdc0ccc AM |
371 | extshndx_buf = alloc_extshndx; |
372 | } | |
373 | if (extshndx_buf == NULL | |
374 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
375 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
376 | { | |
377 | intsym_buf = NULL; | |
378 | goto out; | |
379 | } | |
380 | } | |
381 | ||
382 | if (intsym_buf == NULL) | |
383 | { | |
384 | bfd_size_type amt = symcount * sizeof (Elf_Internal_Sym); | |
217aa764 | 385 | intsym_buf = bfd_malloc (amt); |
6cdc0ccc AM |
386 | if (intsym_buf == NULL) |
387 | goto out; | |
388 | } | |
389 | ||
390 | /* Convert the symbols to internal form. */ | |
391 | isymend = intsym_buf + symcount; | |
392 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
393 | isym < isymend; | |
394 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
217aa764 | 395 | (*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym); |
6cdc0ccc AM |
396 | |
397 | out: | |
398 | if (alloc_ext != NULL) | |
399 | free (alloc_ext); | |
400 | if (alloc_extshndx != NULL) | |
401 | free (alloc_extshndx); | |
402 | ||
403 | return intsym_buf; | |
404 | } | |
405 | ||
5cab59f6 AM |
406 | /* Look up a symbol name. */ |
407 | const char * | |
be8dd2ca AM |
408 | bfd_elf_sym_name (bfd *abfd, |
409 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
410 | Elf_Internal_Sym *isym, |
411 | asection *sym_sec) | |
5cab59f6 | 412 | { |
26c61ae5 | 413 | const char *name; |
5cab59f6 | 414 | unsigned int iname = isym->st_name; |
be8dd2ca | 415 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 416 | |
138f35cc JJ |
417 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
418 | /* Check for a bogus st_shndx to avoid crashing. */ | |
419 | && isym->st_shndx < elf_numsections (abfd) | |
420 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
421 | { |
422 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
423 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
424 | } | |
425 | ||
26c61ae5 L |
426 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
427 | if (name == NULL) | |
428 | name = "(null)"; | |
429 | else if (sym_sec && *name == '\0') | |
430 | name = bfd_section_name (abfd, sym_sec); | |
431 | ||
432 | return name; | |
5cab59f6 AM |
433 | } |
434 | ||
dbb410c3 AM |
435 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
436 | sections. The first element is the flags, the rest are section | |
437 | pointers. */ | |
438 | ||
439 | typedef union elf_internal_group { | |
440 | Elf_Internal_Shdr *shdr; | |
441 | unsigned int flags; | |
442 | } Elf_Internal_Group; | |
443 | ||
b885599b AM |
444 | /* Return the name of the group signature symbol. Why isn't the |
445 | signature just a string? */ | |
446 | ||
447 | static const char * | |
217aa764 | 448 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 449 | { |
9dce4196 | 450 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
451 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
452 | Elf_External_Sym_Shndx eshndx; | |
453 | Elf_Internal_Sym isym; | |
b885599b | 454 | |
13792e9d L |
455 | /* First we need to ensure the symbol table is available. Make sure |
456 | that it is a symbol table section. */ | |
457 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
458 | if (hdr->sh_type != SHT_SYMTAB | |
459 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
460 | return NULL; |
461 | ||
9dce4196 AM |
462 | /* Go read the symbol. */ |
463 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
464 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
465 | &isym, esym, &eshndx) == NULL) | |
b885599b | 466 | return NULL; |
9dce4196 | 467 | |
26c61ae5 | 468 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
469 | } |
470 | ||
dbb410c3 AM |
471 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
472 | ||
b34976b6 | 473 | static bfd_boolean |
217aa764 | 474 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
475 | { |
476 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
477 | ||
478 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
479 | is set to -1 if there are no SHT_GROUP sections. */ | |
480 | if (num_group == 0) | |
481 | { | |
482 | unsigned int i, shnum; | |
483 | ||
484 | /* First count the number of groups. If we have a SHT_GROUP | |
485 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 486 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
487 | num_group = 0; |
488 | for (i = 0; i < shnum; i++) | |
489 | { | |
490 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
491 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
492 | num_group += 1; | |
493 | } | |
494 | ||
495 | if (num_group == 0) | |
20dbb49d L |
496 | { |
497 | num_group = (unsigned) -1; | |
498 | elf_tdata (abfd)->num_group = num_group; | |
499 | } | |
500 | else | |
dbb410c3 AM |
501 | { |
502 | /* We keep a list of elf section headers for group sections, | |
503 | so we can find them quickly. */ | |
20dbb49d L |
504 | bfd_size_type amt; |
505 | ||
506 | elf_tdata (abfd)->num_group = num_group; | |
507 | amt = num_group * sizeof (Elf_Internal_Shdr *); | |
dbb410c3 AM |
508 | elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt); |
509 | if (elf_tdata (abfd)->group_sect_ptr == NULL) | |
b34976b6 | 510 | return FALSE; |
dbb410c3 AM |
511 | |
512 | num_group = 0; | |
513 | for (i = 0; i < shnum; i++) | |
514 | { | |
515 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
516 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
517 | { | |
973ffd63 | 518 | unsigned char *src; |
dbb410c3 AM |
519 | Elf_Internal_Group *dest; |
520 | ||
521 | /* Add to list of sections. */ | |
522 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
523 | num_group += 1; | |
524 | ||
525 | /* Read the raw contents. */ | |
526 | BFD_ASSERT (sizeof (*dest) >= 4); | |
527 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
528 | shdr->contents = bfd_alloc (abfd, amt); | |
529 | if (shdr->contents == NULL | |
530 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
531 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
532 | != shdr->sh_size)) | |
b34976b6 | 533 | return FALSE; |
dbb410c3 AM |
534 | |
535 | /* Translate raw contents, a flag word followed by an | |
536 | array of elf section indices all in target byte order, | |
537 | to the flag word followed by an array of elf section | |
538 | pointers. */ | |
539 | src = shdr->contents + shdr->sh_size; | |
540 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
541 | while (1) | |
542 | { | |
543 | unsigned int idx; | |
544 | ||
545 | src -= 4; | |
546 | --dest; | |
547 | idx = H_GET_32 (abfd, src); | |
548 | if (src == shdr->contents) | |
549 | { | |
550 | dest->flags = idx; | |
b885599b AM |
551 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
552 | shdr->bfd_section->flags | |
553 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
554 | break; |
555 | } | |
556 | if (idx >= shnum) | |
557 | { | |
558 | ((*_bfd_error_handler) | |
d003868e | 559 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
560 | idx = 0; |
561 | } | |
562 | dest->shdr = elf_elfsections (abfd)[idx]; | |
563 | } | |
564 | } | |
565 | } | |
566 | } | |
567 | } | |
568 | ||
569 | if (num_group != (unsigned) -1) | |
570 | { | |
571 | unsigned int i; | |
572 | ||
573 | for (i = 0; i < num_group; i++) | |
574 | { | |
575 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
576 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
577 | unsigned int n_elt = shdr->sh_size / 4; | |
578 | ||
579 | /* Look through this group's sections to see if current | |
580 | section is a member. */ | |
581 | while (--n_elt != 0) | |
582 | if ((++idx)->shdr == hdr) | |
583 | { | |
e0e8c97f | 584 | asection *s = NULL; |
dbb410c3 AM |
585 | |
586 | /* We are a member of this group. Go looking through | |
587 | other members to see if any others are linked via | |
588 | next_in_group. */ | |
589 | idx = (Elf_Internal_Group *) shdr->contents; | |
590 | n_elt = shdr->sh_size / 4; | |
591 | while (--n_elt != 0) | |
592 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 593 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
594 | break; |
595 | if (n_elt != 0) | |
596 | { | |
dbb410c3 AM |
597 | /* Snarf the group name from other member, and |
598 | insert current section in circular list. */ | |
945906ff AM |
599 | elf_group_name (newsect) = elf_group_name (s); |
600 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
601 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
602 | } |
603 | else | |
604 | { | |
dbb410c3 AM |
605 | const char *gname; |
606 | ||
b885599b AM |
607 | gname = group_signature (abfd, shdr); |
608 | if (gname == NULL) | |
b34976b6 | 609 | return FALSE; |
945906ff | 610 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
611 | |
612 | /* Start a circular list with one element. */ | |
945906ff | 613 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 614 | } |
b885599b | 615 | |
9dce4196 AM |
616 | /* If the group section has been created, point to the |
617 | new member. */ | |
dbb410c3 | 618 | if (shdr->bfd_section != NULL) |
945906ff | 619 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 620 | |
dbb410c3 AM |
621 | i = num_group - 1; |
622 | break; | |
623 | } | |
624 | } | |
625 | } | |
626 | ||
945906ff | 627 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 628 | { |
d003868e AM |
629 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
630 | abfd, newsect); | |
dbb410c3 | 631 | } |
b34976b6 | 632 | return TRUE; |
dbb410c3 AM |
633 | } |
634 | ||
3d7f7666 L |
635 | bfd_boolean |
636 | _bfd_elf_setup_group_pointers (bfd *abfd) | |
637 | { | |
638 | unsigned int i; | |
639 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
640 | bfd_boolean result = TRUE; | |
641 | ||
642 | if (num_group == (unsigned) -1) | |
643 | return result; | |
644 | ||
645 | for (i = 0; i < num_group; i++) | |
646 | { | |
647 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
648 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
649 | unsigned int n_elt = shdr->sh_size / 4; | |
650 | ||
651 | while (--n_elt != 0) | |
652 | if ((++idx)->shdr->bfd_section) | |
653 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
654 | else if (idx->shdr->sh_type == SHT_RELA | |
655 | || idx->shdr->sh_type == SHT_REL) | |
656 | /* We won't include relocation sections in section groups in | |
657 | output object files. We adjust the group section size here | |
658 | so that relocatable link will work correctly when | |
659 | relocation sections are in section group in input object | |
660 | files. */ | |
661 | shdr->bfd_section->size -= 4; | |
662 | else | |
663 | { | |
664 | /* There are some unknown sections in the group. */ | |
665 | (*_bfd_error_handler) | |
d003868e AM |
666 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
667 | abfd, | |
3d7f7666 | 668 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
669 | bfd_elf_string_from_elf_section (abfd, |
670 | (elf_elfheader (abfd) | |
671 | ->e_shstrndx), | |
672 | idx->shdr->sh_name), | |
3d7f7666 L |
673 | shdr->bfd_section->name); |
674 | result = FALSE; | |
675 | } | |
676 | } | |
677 | return result; | |
678 | } | |
679 | ||
72adc230 AM |
680 | bfd_boolean |
681 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
682 | { | |
683 | return elf_next_in_group (sec) != NULL; | |
684 | } | |
685 | ||
252b5132 RH |
686 | /* Make a BFD section from an ELF section. We store a pointer to the |
687 | BFD section in the bfd_section field of the header. */ | |
688 | ||
b34976b6 | 689 | bfd_boolean |
217aa764 AM |
690 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
691 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
692 | const char *name, |
693 | int shindex) | |
252b5132 RH |
694 | { |
695 | asection *newsect; | |
696 | flagword flags; | |
9c5bfbb7 | 697 | const struct elf_backend_data *bed; |
252b5132 RH |
698 | |
699 | if (hdr->bfd_section != NULL) | |
700 | { | |
701 | BFD_ASSERT (strcmp (name, | |
702 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 703 | return TRUE; |
252b5132 RH |
704 | } |
705 | ||
706 | newsect = bfd_make_section_anyway (abfd, name); | |
707 | if (newsect == NULL) | |
b34976b6 | 708 | return FALSE; |
252b5132 | 709 | |
1829f4b2 AM |
710 | hdr->bfd_section = newsect; |
711 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 712 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 713 | |
2f89ff8d L |
714 | /* Always use the real type/flags. */ |
715 | elf_section_type (newsect) = hdr->sh_type; | |
716 | elf_section_flags (newsect) = hdr->sh_flags; | |
717 | ||
252b5132 RH |
718 | newsect->filepos = hdr->sh_offset; |
719 | ||
720 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
721 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
722 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 723 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 724 | return FALSE; |
252b5132 RH |
725 | |
726 | flags = SEC_NO_FLAGS; | |
727 | if (hdr->sh_type != SHT_NOBITS) | |
728 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 729 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 730 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
731 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
732 | { | |
733 | flags |= SEC_ALLOC; | |
734 | if (hdr->sh_type != SHT_NOBITS) | |
735 | flags |= SEC_LOAD; | |
736 | } | |
737 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
738 | flags |= SEC_READONLY; | |
739 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
740 | flags |= SEC_CODE; | |
741 | else if ((flags & SEC_LOAD) != 0) | |
742 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
743 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
744 | { | |
745 | flags |= SEC_MERGE; | |
746 | newsect->entsize = hdr->sh_entsize; | |
747 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
748 | flags |= SEC_STRINGS; | |
749 | } | |
dbb410c3 AM |
750 | if (hdr->sh_flags & SHF_GROUP) |
751 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 752 | return FALSE; |
13ae64f3 JJ |
753 | if ((hdr->sh_flags & SHF_TLS) != 0) |
754 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 755 | |
3d2b39cf | 756 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 757 | { |
3d2b39cf L |
758 | /* The debugging sections appear to be recognized only by name, |
759 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
760 | static const struct | |
761 | { | |
762 | const char *name; | |
763 | int len; | |
764 | } debug_sections [] = | |
765 | { | |
766 | { "debug", 5 }, /* 'd' */ | |
767 | { NULL, 0 }, /* 'e' */ | |
768 | { NULL, 0 }, /* 'f' */ | |
769 | { "gnu.linkonce.wi.", 17 }, /* 'g' */ | |
770 | { NULL, 0 }, /* 'h' */ | |
771 | { NULL, 0 }, /* 'i' */ | |
772 | { NULL, 0 }, /* 'j' */ | |
773 | { NULL, 0 }, /* 'k' */ | |
774 | { "line", 4 }, /* 'l' */ | |
775 | { NULL, 0 }, /* 'm' */ | |
776 | { NULL, 0 }, /* 'n' */ | |
777 | { NULL, 0 }, /* 'o' */ | |
778 | { NULL, 0 }, /* 'p' */ | |
779 | { NULL, 0 }, /* 'q' */ | |
780 | { NULL, 0 }, /* 'r' */ | |
781 | { "stab", 4 } /* 's' */ | |
782 | }; | |
783 | ||
784 | if (name [0] == '.') | |
785 | { | |
786 | int i = name [1] - 'd'; | |
787 | if (i >= 0 | |
788 | && i < (int) ARRAY_SIZE (debug_sections) | |
789 | && debug_sections [i].name != NULL | |
790 | && strncmp (&name [1], debug_sections [i].name, | |
791 | debug_sections [i].len) == 0) | |
792 | flags |= SEC_DEBUGGING; | |
793 | } | |
794 | } | |
252b5132 RH |
795 | |
796 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
797 | only link a single copy of the section. This is used to support | |
798 | g++. g++ will emit each template expansion in its own section. | |
799 | The symbols will be defined as weak, so that multiple definitions | |
800 | are permitted. The GNU linker extension is to actually discard | |
801 | all but one of the sections. */ | |
b885599b AM |
802 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
803 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
804 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
805 | ||
fa152c49 JW |
806 | bed = get_elf_backend_data (abfd); |
807 | if (bed->elf_backend_section_flags) | |
808 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 809 | return FALSE; |
fa152c49 | 810 | |
252b5132 | 811 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 812 | return FALSE; |
252b5132 RH |
813 | |
814 | if ((flags & SEC_ALLOC) != 0) | |
815 | { | |
816 | Elf_Internal_Phdr *phdr; | |
817 | unsigned int i; | |
818 | ||
819 | /* Look through the phdrs to see if we need to adjust the lma. | |
820 | If all the p_paddr fields are zero, we ignore them, since | |
821 | some ELF linkers produce such output. */ | |
822 | phdr = elf_tdata (abfd)->phdr; | |
823 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
824 | { | |
825 | if (phdr->p_paddr != 0) | |
826 | break; | |
827 | } | |
828 | if (i < elf_elfheader (abfd)->e_phnum) | |
829 | { | |
830 | phdr = elf_tdata (abfd)->phdr; | |
831 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
832 | { | |
e0e8c97f NC |
833 | /* This section is part of this segment if its file |
834 | offset plus size lies within the segment's memory | |
835 | span and, if the section is loaded, the extent of the | |
47d9a591 | 836 | loaded data lies within the extent of the segment. |
bf36db18 NC |
837 | |
838 | Note - we used to check the p_paddr field as well, and | |
839 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 840 | though, as a perfectly valid initialised segment can |
bf36db18 | 841 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 842 | place special significance on the address 0 and |
bf36db18 NC |
843 | executables need to be able to have a segment which |
844 | covers this address. */ | |
252b5132 | 845 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
846 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
847 | && (hdr->sh_offset + hdr->sh_size | |
848 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 849 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
850 | || (hdr->sh_offset + hdr->sh_size |
851 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 852 | { |
dba143ef | 853 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
854 | newsect->lma = (phdr->p_paddr |
855 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
856 | else |
857 | /* We used to use the same adjustment for SEC_LOAD | |
858 | sections, but that doesn't work if the segment | |
859 | is packed with code from multiple VMAs. | |
860 | Instead we calculate the section LMA based on | |
861 | the segment LMA. It is assumed that the | |
862 | segment will contain sections with contiguous | |
863 | LMAs, even if the VMAs are not. */ | |
864 | newsect->lma = (phdr->p_paddr | |
865 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
866 | |
867 | /* With contiguous segments, we can't tell from file | |
868 | offsets whether a section with zero size should | |
869 | be placed at the end of one segment or the | |
870 | beginning of the next. Decide based on vaddr. */ | |
871 | if (hdr->sh_addr >= phdr->p_vaddr | |
872 | && (hdr->sh_addr + hdr->sh_size | |
873 | <= phdr->p_vaddr + phdr->p_memsz)) | |
874 | break; | |
252b5132 RH |
875 | } |
876 | } | |
877 | } | |
878 | } | |
879 | ||
b34976b6 | 880 | return TRUE; |
252b5132 RH |
881 | } |
882 | ||
883 | /* | |
884 | INTERNAL_FUNCTION | |
885 | bfd_elf_find_section | |
886 | ||
887 | SYNOPSIS | |
888 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
889 | ||
890 | DESCRIPTION | |
891 | Helper functions for GDB to locate the string tables. | |
892 | Since BFD hides string tables from callers, GDB needs to use an | |
893 | internal hook to find them. Sun's .stabstr, in particular, | |
894 | isn't even pointed to by the .stab section, so ordinary | |
895 | mechanisms wouldn't work to find it, even if we had some. | |
896 | */ | |
897 | ||
898 | struct elf_internal_shdr * | |
217aa764 | 899 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
900 | { |
901 | Elf_Internal_Shdr **i_shdrp; | |
902 | char *shstrtab; | |
903 | unsigned int max; | |
904 | unsigned int i; | |
905 | ||
906 | i_shdrp = elf_elfsections (abfd); | |
907 | if (i_shdrp != NULL) | |
908 | { | |
9ad5cbcf AM |
909 | shstrtab = bfd_elf_get_str_section (abfd, |
910 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
911 | if (shstrtab != NULL) |
912 | { | |
9ad5cbcf | 913 | max = elf_numsections (abfd); |
252b5132 RH |
914 | for (i = 1; i < max; i++) |
915 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
916 | return i_shdrp[i]; | |
917 | } | |
918 | } | |
919 | return 0; | |
920 | } | |
921 | ||
922 | const char *const bfd_elf_section_type_names[] = { | |
923 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
924 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
925 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
926 | }; | |
927 | ||
1049f94e | 928 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
929 | output, and the reloc is against an external symbol, and nothing |
930 | has given us any additional addend, the resulting reloc will also | |
931 | be against the same symbol. In such a case, we don't want to | |
932 | change anything about the way the reloc is handled, since it will | |
933 | all be done at final link time. Rather than put special case code | |
934 | into bfd_perform_relocation, all the reloc types use this howto | |
935 | function. It just short circuits the reloc if producing | |
1049f94e | 936 | relocatable output against an external symbol. */ |
252b5132 | 937 | |
252b5132 | 938 | bfd_reloc_status_type |
217aa764 AM |
939 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
940 | arelent *reloc_entry, | |
941 | asymbol *symbol, | |
942 | void *data ATTRIBUTE_UNUSED, | |
943 | asection *input_section, | |
944 | bfd *output_bfd, | |
945 | char **error_message ATTRIBUTE_UNUSED) | |
946 | { | |
947 | if (output_bfd != NULL | |
252b5132 RH |
948 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
949 | && (! reloc_entry->howto->partial_inplace | |
950 | || reloc_entry->addend == 0)) | |
951 | { | |
952 | reloc_entry->address += input_section->output_offset; | |
953 | return bfd_reloc_ok; | |
954 | } | |
955 | ||
956 | return bfd_reloc_continue; | |
957 | } | |
958 | \f | |
d3c456e9 JJ |
959 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
960 | ||
961 | static void | |
217aa764 AM |
962 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
963 | asection *sec) | |
d3c456e9 | 964 | { |
68bfbfcc AM |
965 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
966 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
967 | } |
968 | ||
8550eb6e JJ |
969 | /* Finish SHF_MERGE section merging. */ |
970 | ||
b34976b6 | 971 | bfd_boolean |
217aa764 | 972 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 973 | { |
57ceae94 AM |
974 | bfd *ibfd; |
975 | asection *sec; | |
976 | ||
0eddce27 | 977 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 978 | return FALSE; |
57ceae94 AM |
979 | |
980 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
981 | if ((ibfd->flags & DYNAMIC) == 0) | |
982 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
983 | if ((sec->flags & SEC_MERGE) != 0 | |
984 | && !bfd_is_abs_section (sec->output_section)) | |
985 | { | |
986 | struct bfd_elf_section_data *secdata; | |
987 | ||
988 | secdata = elf_section_data (sec); | |
989 | if (! _bfd_add_merge_section (abfd, | |
990 | &elf_hash_table (info)->merge_info, | |
991 | sec, &secdata->sec_info)) | |
992 | return FALSE; | |
993 | else if (secdata->sec_info) | |
994 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
995 | } | |
996 | ||
997 | if (elf_hash_table (info)->merge_info != NULL) | |
998 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 999 | merge_sections_remove_hook); |
b34976b6 | 1000 | return TRUE; |
8550eb6e | 1001 | } |
2d653fc7 AM |
1002 | |
1003 | void | |
217aa764 | 1004 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1005 | { |
1006 | sec->output_section = bfd_abs_section_ptr; | |
1007 | sec->output_offset = sec->vma; | |
0eddce27 | 1008 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1009 | return; |
1010 | ||
68bfbfcc | 1011 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1012 | } |
8550eb6e | 1013 | \f |
0ac4564e L |
1014 | /* Copy the program header and other data from one object module to |
1015 | another. */ | |
252b5132 | 1016 | |
b34976b6 | 1017 | bfd_boolean |
217aa764 | 1018 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1019 | { |
1020 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1021 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1022 | return TRUE; |
2d502050 L |
1023 | |
1024 | BFD_ASSERT (!elf_flags_init (obfd) | |
1025 | || (elf_elfheader (obfd)->e_flags | |
1026 | == elf_elfheader (ibfd)->e_flags)); | |
1027 | ||
0ac4564e | 1028 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1029 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1030 | elf_flags_init (obfd) = TRUE; |
1031 | return TRUE; | |
2d502050 L |
1032 | } |
1033 | ||
f0b79d91 L |
1034 | /* Print out the program headers. */ |
1035 | ||
b34976b6 | 1036 | bfd_boolean |
217aa764 | 1037 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1038 | { |
217aa764 | 1039 | FILE *f = farg; |
252b5132 RH |
1040 | Elf_Internal_Phdr *p; |
1041 | asection *s; | |
1042 | bfd_byte *dynbuf = NULL; | |
1043 | ||
1044 | p = elf_tdata (abfd)->phdr; | |
1045 | if (p != NULL) | |
1046 | { | |
1047 | unsigned int i, c; | |
1048 | ||
1049 | fprintf (f, _("\nProgram Header:\n")); | |
1050 | c = elf_elfheader (abfd)->e_phnum; | |
1051 | for (i = 0; i < c; i++, p++) | |
1052 | { | |
dc810e39 | 1053 | const char *pt; |
252b5132 RH |
1054 | char buf[20]; |
1055 | ||
1056 | switch (p->p_type) | |
1057 | { | |
dc810e39 AM |
1058 | case PT_NULL: pt = "NULL"; break; |
1059 | case PT_LOAD: pt = "LOAD"; break; | |
1060 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1061 | case PT_INTERP: pt = "INTERP"; break; | |
1062 | case PT_NOTE: pt = "NOTE"; break; | |
1063 | case PT_SHLIB: pt = "SHLIB"; break; | |
1064 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 1065 | case PT_TLS: pt = "TLS"; break; |
65765700 | 1066 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 1067 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 1068 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 1069 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 1070 | } |
dc810e39 | 1071 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1072 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1073 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1074 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1075 | fprintf (f, " paddr 0x"); |
60b89a18 | 1076 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1077 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1078 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1079 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1080 | fprintf (f, " memsz 0x"); |
60b89a18 | 1081 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1082 | fprintf (f, " flags %c%c%c", |
1083 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1084 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1085 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1086 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1087 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1088 | fprintf (f, "\n"); |
1089 | } | |
1090 | } | |
1091 | ||
1092 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1093 | if (s != NULL) | |
1094 | { | |
1095 | int elfsec; | |
dc810e39 | 1096 | unsigned long shlink; |
252b5132 RH |
1097 | bfd_byte *extdyn, *extdynend; |
1098 | size_t extdynsize; | |
217aa764 | 1099 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1100 | |
1101 | fprintf (f, _("\nDynamic Section:\n")); | |
1102 | ||
eea6121a | 1103 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1104 | goto error_return; |
1105 | ||
1106 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1107 | if (elfsec == -1) | |
1108 | goto error_return; | |
dc810e39 | 1109 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1110 | |
1111 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1112 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1113 | ||
1114 | extdyn = dynbuf; | |
eea6121a | 1115 | extdynend = extdyn + s->size; |
252b5132 RH |
1116 | for (; extdyn < extdynend; extdyn += extdynsize) |
1117 | { | |
1118 | Elf_Internal_Dyn dyn; | |
1119 | const char *name; | |
1120 | char ab[20]; | |
b34976b6 | 1121 | bfd_boolean stringp; |
252b5132 | 1122 | |
217aa764 | 1123 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1124 | |
1125 | if (dyn.d_tag == DT_NULL) | |
1126 | break; | |
1127 | ||
b34976b6 | 1128 | stringp = FALSE; |
252b5132 RH |
1129 | switch (dyn.d_tag) |
1130 | { | |
1131 | default: | |
1132 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1133 | name = ab; | |
1134 | break; | |
1135 | ||
b34976b6 | 1136 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1137 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1138 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1139 | case DT_HASH: name = "HASH"; break; | |
1140 | case DT_STRTAB: name = "STRTAB"; break; | |
1141 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1142 | case DT_RELA: name = "RELA"; break; | |
1143 | case DT_RELASZ: name = "RELASZ"; break; | |
1144 | case DT_RELAENT: name = "RELAENT"; break; | |
1145 | case DT_STRSZ: name = "STRSZ"; break; | |
1146 | case DT_SYMENT: name = "SYMENT"; break; | |
1147 | case DT_INIT: name = "INIT"; break; | |
1148 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1149 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1150 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1151 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1152 | case DT_REL: name = "REL"; break; | |
1153 | case DT_RELSZ: name = "RELSZ"; break; | |
1154 | case DT_RELENT: name = "RELENT"; break; | |
1155 | case DT_PLTREL: name = "PLTREL"; break; | |
1156 | case DT_DEBUG: name = "DEBUG"; break; | |
1157 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1158 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1159 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1160 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1161 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1162 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1163 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1164 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1165 | case DT_FLAGS: name = "FLAGS"; break; |
1166 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1167 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1168 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1169 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1170 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1171 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1172 | case DT_FEATURE: name = "FEATURE"; break; | |
1173 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1174 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1175 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1176 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1177 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1178 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1179 | case DT_PLTPAD: name = "PLTPAD"; break; |
1180 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1181 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1182 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1183 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1184 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1185 | case DT_VERSYM: name = "VERSYM"; break; |
1186 | case DT_VERDEF: name = "VERDEF"; break; | |
1187 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1188 | case DT_VERNEED: name = "VERNEED"; break; | |
1189 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1190 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1191 | case DT_USED: name = "USED"; break; |
b34976b6 | 1192 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1193 | } |
1194 | ||
1195 | fprintf (f, " %-11s ", name); | |
1196 | if (! stringp) | |
1197 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1198 | else | |
1199 | { | |
1200 | const char *string; | |
dc810e39 | 1201 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1202 | |
dc810e39 | 1203 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1204 | if (string == NULL) |
1205 | goto error_return; | |
1206 | fprintf (f, "%s", string); | |
1207 | } | |
1208 | fprintf (f, "\n"); | |
1209 | } | |
1210 | ||
1211 | free (dynbuf); | |
1212 | dynbuf = NULL; | |
1213 | } | |
1214 | ||
1215 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1216 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1217 | { | |
fc0e6df6 | 1218 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1219 | return FALSE; |
252b5132 RH |
1220 | } |
1221 | ||
1222 | if (elf_dynverdef (abfd) != 0) | |
1223 | { | |
1224 | Elf_Internal_Verdef *t; | |
1225 | ||
1226 | fprintf (f, _("\nVersion definitions:\n")); | |
1227 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1228 | { | |
1229 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
1230 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
1231 | if (t->vd_auxptr->vda_nextptr != NULL) | |
1232 | { | |
1233 | Elf_Internal_Verdaux *a; | |
1234 | ||
1235 | fprintf (f, "\t"); | |
1236 | for (a = t->vd_auxptr->vda_nextptr; | |
1237 | a != NULL; | |
1238 | a = a->vda_nextptr) | |
1239 | fprintf (f, "%s ", a->vda_nodename); | |
1240 | fprintf (f, "\n"); | |
1241 | } | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | if (elf_dynverref (abfd) != 0) | |
1246 | { | |
1247 | Elf_Internal_Verneed *t; | |
1248 | ||
1249 | fprintf (f, _("\nVersion References:\n")); | |
1250 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1251 | { | |
1252 | Elf_Internal_Vernaux *a; | |
1253 | ||
1254 | fprintf (f, _(" required from %s:\n"), t->vn_filename); | |
1255 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1256 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
1257 | a->vna_flags, a->vna_other, a->vna_nodename); | |
1258 | } | |
1259 | } | |
1260 | ||
b34976b6 | 1261 | return TRUE; |
252b5132 RH |
1262 | |
1263 | error_return: | |
1264 | if (dynbuf != NULL) | |
1265 | free (dynbuf); | |
b34976b6 | 1266 | return FALSE; |
252b5132 RH |
1267 | } |
1268 | ||
1269 | /* Display ELF-specific fields of a symbol. */ | |
1270 | ||
1271 | void | |
217aa764 AM |
1272 | bfd_elf_print_symbol (bfd *abfd, |
1273 | void *filep, | |
1274 | asymbol *symbol, | |
1275 | bfd_print_symbol_type how) | |
252b5132 | 1276 | { |
217aa764 | 1277 | FILE *file = filep; |
252b5132 RH |
1278 | switch (how) |
1279 | { | |
1280 | case bfd_print_symbol_name: | |
1281 | fprintf (file, "%s", symbol->name); | |
1282 | break; | |
1283 | case bfd_print_symbol_more: | |
1284 | fprintf (file, "elf "); | |
60b89a18 | 1285 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1286 | fprintf (file, " %lx", (long) symbol->flags); |
1287 | break; | |
1288 | case bfd_print_symbol_all: | |
1289 | { | |
4e8a9624 AM |
1290 | const char *section_name; |
1291 | const char *name = NULL; | |
9c5bfbb7 | 1292 | const struct elf_backend_data *bed; |
7a13edea | 1293 | unsigned char st_other; |
dbb410c3 | 1294 | bfd_vma val; |
c044fabd | 1295 | |
252b5132 | 1296 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1297 | |
1298 | bed = get_elf_backend_data (abfd); | |
1299 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1300 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1301 | |
1302 | if (name == NULL) | |
1303 | { | |
7ee38065 | 1304 | name = symbol->name; |
217aa764 | 1305 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1306 | } |
1307 | ||
252b5132 RH |
1308 | fprintf (file, " %s\t", section_name); |
1309 | /* Print the "other" value for a symbol. For common symbols, | |
1310 | we've already printed the size; now print the alignment. | |
1311 | For other symbols, we have no specified alignment, and | |
1312 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1313 | if (bfd_is_com_section (symbol->section)) |
1314 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1315 | else | |
1316 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1317 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1318 | |
1319 | /* If we have version information, print it. */ | |
1320 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1321 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1322 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1323 | { | |
1324 | unsigned int vernum; | |
1325 | const char *version_string; | |
1326 | ||
1327 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1328 | ||
1329 | if (vernum == 0) | |
1330 | version_string = ""; | |
1331 | else if (vernum == 1) | |
1332 | version_string = "Base"; | |
1333 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1334 | version_string = | |
1335 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1336 | else | |
1337 | { | |
1338 | Elf_Internal_Verneed *t; | |
1339 | ||
1340 | version_string = ""; | |
1341 | for (t = elf_tdata (abfd)->verref; | |
1342 | t != NULL; | |
1343 | t = t->vn_nextref) | |
1344 | { | |
1345 | Elf_Internal_Vernaux *a; | |
1346 | ||
1347 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1348 | { | |
1349 | if (a->vna_other == vernum) | |
1350 | { | |
1351 | version_string = a->vna_nodename; | |
1352 | break; | |
1353 | } | |
1354 | } | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1359 | fprintf (file, " %-11s", version_string); | |
1360 | else | |
1361 | { | |
1362 | int i; | |
1363 | ||
1364 | fprintf (file, " (%s)", version_string); | |
1365 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1366 | putc (' ', file); | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1371 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1372 | |
7a13edea NC |
1373 | switch (st_other) |
1374 | { | |
1375 | case 0: break; | |
1376 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1377 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1378 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1379 | default: | |
1380 | /* Some other non-defined flags are also present, so print | |
1381 | everything hex. */ | |
1382 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1383 | } | |
252b5132 | 1384 | |
587ff49e | 1385 | fprintf (file, " %s", name); |
252b5132 RH |
1386 | } |
1387 | break; | |
1388 | } | |
1389 | } | |
1390 | \f | |
1391 | /* Create an entry in an ELF linker hash table. */ | |
1392 | ||
1393 | struct bfd_hash_entry * | |
217aa764 AM |
1394 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1395 | struct bfd_hash_table *table, | |
1396 | const char *string) | |
252b5132 | 1397 | { |
252b5132 RH |
1398 | /* Allocate the structure if it has not already been allocated by a |
1399 | subclass. */ | |
51b64d56 AM |
1400 | if (entry == NULL) |
1401 | { | |
1402 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1403 | if (entry == NULL) | |
1404 | return entry; | |
1405 | } | |
252b5132 RH |
1406 | |
1407 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1408 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1409 | if (entry != NULL) | |
252b5132 | 1410 | { |
51b64d56 AM |
1411 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1412 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1413 | ||
252b5132 RH |
1414 | /* Set local fields. */ |
1415 | ret->indx = -1; | |
252b5132 | 1416 | ret->dynindx = -1; |
f6e332e6 AM |
1417 | ret->got = ret->plt = htab->init_refcount; |
1418 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) | |
1419 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1420 | /* Assume that we have been called by a non-ELF symbol reader. |
1421 | This flag is then reset by the code which reads an ELF input | |
1422 | file. This ensures that a symbol created by a non-ELF symbol | |
1423 | reader will have the flag set correctly. */ | |
f5385ebf | 1424 | ret->non_elf = 1; |
252b5132 RH |
1425 | } |
1426 | ||
51b64d56 | 1427 | return entry; |
252b5132 RH |
1428 | } |
1429 | ||
2920b85c | 1430 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1431 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1432 | |
c61b8717 | 1433 | void |
9c5bfbb7 | 1434 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1435 | struct elf_link_hash_entry *dir, |
1436 | struct elf_link_hash_entry *ind) | |
2920b85c | 1437 | { |
3c3e9281 | 1438 | bfd_signed_vma tmp; |
b48fa14c | 1439 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1440 | |
2920b85c RH |
1441 | /* Copy down any references that we may have already seen to the |
1442 | symbol which just became indirect. */ | |
1443 | ||
f5385ebf AM |
1444 | dir->ref_dynamic |= ind->ref_dynamic; |
1445 | dir->ref_regular |= ind->ref_regular; | |
1446 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1447 | dir->non_got_ref |= ind->non_got_ref; | |
1448 | dir->needs_plt |= ind->needs_plt; | |
1449 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1450 | |
1e370bd2 | 1451 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1452 | return; |
1453 | ||
51b64d56 | 1454 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1455 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1456 | tmp = dir->got.refcount; |
b48fa14c | 1457 | if (tmp < lowest_valid) |
2920b85c | 1458 | { |
51b64d56 | 1459 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1460 | ind->got.refcount = tmp; |
2920b85c | 1461 | } |
3c3e9281 | 1462 | else |
b48fa14c | 1463 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1464 | |
3c3e9281 | 1465 | tmp = dir->plt.refcount; |
b48fa14c | 1466 | if (tmp < lowest_valid) |
2920b85c | 1467 | { |
51b64d56 | 1468 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1469 | ind->plt.refcount = tmp; |
2920b85c | 1470 | } |
3c3e9281 | 1471 | else |
b48fa14c | 1472 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1473 | |
1474 | if (dir->dynindx == -1) | |
1475 | { | |
1476 | dir->dynindx = ind->dynindx; | |
1477 | dir->dynstr_index = ind->dynstr_index; | |
1478 | ind->dynindx = -1; | |
1479 | ind->dynstr_index = 0; | |
1480 | } | |
3c3e9281 AM |
1481 | else |
1482 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1483 | } |
1484 | ||
c61b8717 | 1485 | void |
217aa764 AM |
1486 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1487 | struct elf_link_hash_entry *h, | |
1488 | bfd_boolean force_local) | |
2920b85c | 1489 | { |
5cab59f6 | 1490 | h->plt = elf_hash_table (info)->init_offset; |
f5385ebf | 1491 | h->needs_plt = 0; |
e5094212 AM |
1492 | if (force_local) |
1493 | { | |
f5385ebf | 1494 | h->forced_local = 1; |
e5094212 AM |
1495 | if (h->dynindx != -1) |
1496 | { | |
1497 | h->dynindx = -1; | |
1498 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1499 | h->dynstr_index); | |
1500 | } | |
1501 | } | |
2920b85c RH |
1502 | } |
1503 | ||
252b5132 RH |
1504 | /* Initialize an ELF linker hash table. */ |
1505 | ||
b34976b6 | 1506 | bfd_boolean |
217aa764 AM |
1507 | _bfd_elf_link_hash_table_init |
1508 | (struct elf_link_hash_table *table, | |
1509 | bfd *abfd, | |
1510 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1511 | struct bfd_hash_table *, | |
1512 | const char *)) | |
252b5132 | 1513 | { |
b34976b6 | 1514 | bfd_boolean ret; |
8ea2e4bd | 1515 | |
b34976b6 | 1516 | table->dynamic_sections_created = FALSE; |
252b5132 | 1517 | table->dynobj = NULL; |
963f13ec AO |
1518 | /* Make sure can_refcount is extended to the width and signedness of |
1519 | init_refcount before we subtract one from it. */ | |
5cab59f6 AM |
1520 | table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; |
1521 | table->init_refcount.refcount -= 1; | |
1522 | table->init_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1523 | /* The first dynamic symbol is a dummy. */ |
1524 | table->dynsymcount = 1; | |
1525 | table->dynstr = NULL; | |
1526 | table->bucketcount = 0; | |
1527 | table->needed = NULL; | |
1528 | table->hgot = NULL; | |
f5fa8ca2 | 1529 | table->merge_info = NULL; |
3722b82f | 1530 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1531 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1532 | table->dynlocal = NULL; |
73722af0 | 1533 | table->runpath = NULL; |
e1918d23 AM |
1534 | table->tls_sec = NULL; |
1535 | table->tls_size = 0; | |
73722af0 | 1536 | table->loaded = NULL; |
67687978 | 1537 | table->is_relocatable_executable = FALSE; |
73722af0 AM |
1538 | |
1539 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1540 | table->root.type = bfd_link_elf_hash_table; |
1541 | ||
1542 | return ret; | |
252b5132 RH |
1543 | } |
1544 | ||
1545 | /* Create an ELF linker hash table. */ | |
1546 | ||
1547 | struct bfd_link_hash_table * | |
217aa764 | 1548 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1549 | { |
1550 | struct elf_link_hash_table *ret; | |
dc810e39 | 1551 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1552 | |
217aa764 AM |
1553 | ret = bfd_malloc (amt); |
1554 | if (ret == NULL) | |
252b5132 RH |
1555 | return NULL; |
1556 | ||
1557 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1558 | { | |
e2d34d7d | 1559 | free (ret); |
252b5132 RH |
1560 | return NULL; |
1561 | } | |
1562 | ||
1563 | return &ret->root; | |
1564 | } | |
1565 | ||
1566 | /* This is a hook for the ELF emulation code in the generic linker to | |
1567 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1568 | entry for a dynamic object. */ |
252b5132 RH |
1569 | |
1570 | void | |
217aa764 | 1571 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1572 | { |
1573 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1574 | && bfd_get_format (abfd) == bfd_object) | |
1575 | elf_dt_name (abfd) = name; | |
1576 | } | |
1577 | ||
e56f61be L |
1578 | int |
1579 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1580 | { | |
1581 | int lib_class; | |
1582 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1583 | && bfd_get_format (abfd) == bfd_object) | |
1584 | lib_class = elf_dyn_lib_class (abfd); | |
1585 | else | |
1586 | lib_class = 0; | |
1587 | return lib_class; | |
1588 | } | |
1589 | ||
74816898 | 1590 | void |
4a43e768 | 1591 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1592 | { |
1593 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1594 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1595 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1596 | } |
1597 | ||
252b5132 RH |
1598 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1599 | the linker ELF emulation code. */ | |
1600 | ||
1601 | struct bfd_link_needed_list * | |
217aa764 AM |
1602 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1603 | struct bfd_link_info *info) | |
252b5132 | 1604 | { |
0eddce27 | 1605 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1606 | return NULL; |
1607 | return elf_hash_table (info)->needed; | |
1608 | } | |
1609 | ||
a963dc6a L |
1610 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1611 | hook for the linker ELF emulation code. */ | |
1612 | ||
1613 | struct bfd_link_needed_list * | |
217aa764 AM |
1614 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1615 | struct bfd_link_info *info) | |
a963dc6a | 1616 | { |
0eddce27 | 1617 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1618 | return NULL; |
1619 | return elf_hash_table (info)->runpath; | |
1620 | } | |
1621 | ||
252b5132 RH |
1622 | /* Get the name actually used for a dynamic object for a link. This |
1623 | is the SONAME entry if there is one. Otherwise, it is the string | |
1624 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1625 | ||
1626 | const char * | |
217aa764 | 1627 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1628 | { |
1629 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1630 | && bfd_get_format (abfd) == bfd_object) | |
1631 | return elf_dt_name (abfd); | |
1632 | return NULL; | |
1633 | } | |
1634 | ||
1635 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1636 | the ELF linker emulation code. */ | |
1637 | ||
b34976b6 | 1638 | bfd_boolean |
217aa764 AM |
1639 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1640 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1641 | { |
1642 | asection *s; | |
1643 | bfd_byte *dynbuf = NULL; | |
1644 | int elfsec; | |
dc810e39 | 1645 | unsigned long shlink; |
252b5132 RH |
1646 | bfd_byte *extdyn, *extdynend; |
1647 | size_t extdynsize; | |
217aa764 | 1648 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1649 | |
1650 | *pneeded = NULL; | |
1651 | ||
1652 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1653 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1654 | return TRUE; |
252b5132 RH |
1655 | |
1656 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1657 | if (s == NULL || s->size == 0) |
b34976b6 | 1658 | return TRUE; |
252b5132 | 1659 | |
eea6121a | 1660 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1661 | goto error_return; |
1662 | ||
1663 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1664 | if (elfsec == -1) | |
1665 | goto error_return; | |
1666 | ||
dc810e39 | 1667 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1668 | |
1669 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1670 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1671 | ||
1672 | extdyn = dynbuf; | |
eea6121a | 1673 | extdynend = extdyn + s->size; |
252b5132 RH |
1674 | for (; extdyn < extdynend; extdyn += extdynsize) |
1675 | { | |
1676 | Elf_Internal_Dyn dyn; | |
1677 | ||
217aa764 | 1678 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1679 | |
1680 | if (dyn.d_tag == DT_NULL) | |
1681 | break; | |
1682 | ||
1683 | if (dyn.d_tag == DT_NEEDED) | |
1684 | { | |
1685 | const char *string; | |
1686 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1687 | unsigned int tagv = dyn.d_un.d_val; |
1688 | bfd_size_type amt; | |
252b5132 | 1689 | |
dc810e39 | 1690 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1691 | if (string == NULL) |
1692 | goto error_return; | |
1693 | ||
dc810e39 | 1694 | amt = sizeof *l; |
217aa764 | 1695 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1696 | if (l == NULL) |
1697 | goto error_return; | |
1698 | ||
1699 | l->by = abfd; | |
1700 | l->name = string; | |
1701 | l->next = *pneeded; | |
1702 | *pneeded = l; | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | free (dynbuf); | |
1707 | ||
b34976b6 | 1708 | return TRUE; |
252b5132 RH |
1709 | |
1710 | error_return: | |
1711 | if (dynbuf != NULL) | |
1712 | free (dynbuf); | |
b34976b6 | 1713 | return FALSE; |
252b5132 RH |
1714 | } |
1715 | \f | |
1716 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1717 | ||
1718 | struct bfd_strtab_hash * | |
217aa764 | 1719 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1720 | { |
1721 | struct bfd_strtab_hash *ret; | |
1722 | ||
1723 | ret = _bfd_stringtab_init (); | |
1724 | if (ret != NULL) | |
1725 | { | |
1726 | bfd_size_type loc; | |
1727 | ||
b34976b6 | 1728 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1729 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1730 | if (loc == (bfd_size_type) -1) | |
1731 | { | |
1732 | _bfd_stringtab_free (ret); | |
1733 | ret = NULL; | |
1734 | } | |
1735 | } | |
1736 | return ret; | |
1737 | } | |
1738 | \f | |
1739 | /* ELF .o/exec file reading */ | |
1740 | ||
c044fabd | 1741 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1742 | |
b34976b6 | 1743 | bfd_boolean |
217aa764 | 1744 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1745 | { |
1746 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1747 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1748 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1749 | const char *name; |
252b5132 | 1750 | |
1b3a8575 AM |
1751 | name = bfd_elf_string_from_elf_section (abfd, |
1752 | elf_elfheader (abfd)->e_shstrndx, | |
1753 | hdr->sh_name); | |
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 RH |
1810 | |
1811 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1812 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1813 | elf_onesymtab (abfd) = shindex; | |
1814 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1815 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1816 | abfd->flags |= HAS_SYMS; | |
1817 | ||
1818 | /* Sometimes a shared object will map in the symbol table. If | |
1819 | SHF_ALLOC is set, and this is a shared object, then we also | |
1820 | treat this section as a BFD section. We can not base the | |
1821 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1822 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1823 | linker. */ |
1824 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1825 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1826 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1827 | shindex)) | |
b34976b6 | 1828 | return FALSE; |
252b5132 | 1829 | |
1b3a8575 AM |
1830 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1831 | can't read symbols without that section loaded as well. It | |
1832 | is most likely specified by the next section header. */ | |
1833 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1834 | { | |
1835 | unsigned int i, num_sec; | |
1836 | ||
1837 | num_sec = elf_numsections (abfd); | |
1838 | for (i = shindex + 1; i < num_sec; i++) | |
1839 | { | |
1840 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1841 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1842 | && hdr2->sh_link == shindex) | |
1843 | break; | |
1844 | } | |
1845 | if (i == num_sec) | |
1846 | for (i = 1; i < shindex; i++) | |
1847 | { | |
1848 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1849 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1850 | && hdr2->sh_link == shindex) | |
1851 | break; | |
1852 | } | |
1853 | if (i != shindex) | |
1854 | return bfd_section_from_shdr (abfd, i); | |
1855 | } | |
b34976b6 | 1856 | return TRUE; |
252b5132 RH |
1857 | |
1858 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1859 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1860 | return TRUE; |
252b5132 RH |
1861 | |
1862 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1863 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1864 | elf_dynsymtab (abfd) = shindex; | |
1865 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1866 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1867 | abfd->flags |= HAS_SYMS; | |
1868 | ||
1869 | /* Besides being a symbol table, we also treat this as a regular | |
1870 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1871 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1872 | |
9ad5cbcf AM |
1873 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1874 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1875 | return TRUE; |
9ad5cbcf | 1876 | |
1b3a8575 | 1877 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1878 | elf_symtab_shndx (abfd) = shindex; |
1879 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1880 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1881 | return TRUE; |
9ad5cbcf | 1882 | |
252b5132 RH |
1883 | case SHT_STRTAB: /* A string table */ |
1884 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1885 | return TRUE; |
252b5132 RH |
1886 | if (ehdr->e_shstrndx == shindex) |
1887 | { | |
1888 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1889 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1890 | return TRUE; |
252b5132 | 1891 | } |
1b3a8575 AM |
1892 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1893 | { | |
1894 | symtab_strtab: | |
1895 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1896 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1897 | return TRUE; | |
1898 | } | |
1899 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1900 | { | |
1901 | dynsymtab_strtab: | |
1902 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1903 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1904 | elf_elfsections (abfd)[shindex] = hdr; | |
1905 | /* We also treat this as a regular section, so that objcopy | |
1906 | can handle it. */ | |
6dc132d9 L |
1907 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1908 | shindex); | |
1b3a8575 | 1909 | } |
252b5132 | 1910 | |
1b3a8575 AM |
1911 | /* If the string table isn't one of the above, then treat it as a |
1912 | regular section. We need to scan all the headers to be sure, | |
1913 | just in case this strtab section appeared before the above. */ | |
1914 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1915 | { | |
1916 | unsigned int i, num_sec; | |
252b5132 | 1917 | |
1b3a8575 AM |
1918 | num_sec = elf_numsections (abfd); |
1919 | for (i = 1; i < num_sec; i++) | |
1920 | { | |
1921 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1922 | if (hdr2->sh_link == shindex) | |
1923 | { | |
1924 | if (! bfd_section_from_shdr (abfd, i)) | |
1925 | return FALSE; | |
1926 | if (elf_onesymtab (abfd) == i) | |
1927 | goto symtab_strtab; | |
1928 | if (elf_dynsymtab (abfd) == i) | |
1929 | goto dynsymtab_strtab; | |
1930 | } | |
1931 | } | |
1932 | } | |
6dc132d9 | 1933 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1934 | |
1935 | case SHT_REL: | |
1936 | case SHT_RELA: | |
1937 | /* *These* do a lot of work -- but build no sections! */ | |
1938 | { | |
1939 | asection *target_sect; | |
1940 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1941 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1942 | |
03ae5f59 | 1943 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1944 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1945 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1946 | { |
1947 | ((*_bfd_error_handler) | |
d003868e AM |
1948 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1949 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1950 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1951 | shindex); | |
03ae5f59 ILT |
1952 | } |
1953 | ||
252b5132 RH |
1954 | /* For some incomprehensible reason Oracle distributes |
1955 | libraries for Solaris in which some of the objects have | |
1956 | bogus sh_link fields. It would be nice if we could just | |
1957 | reject them, but, unfortunately, some people need to use | |
1958 | them. We scan through the section headers; if we find only | |
1959 | one suitable symbol table, we clobber the sh_link to point | |
1960 | to it. I hope this doesn't break anything. */ | |
1961 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1962 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1963 | { | |
9ad5cbcf | 1964 | unsigned int scan; |
252b5132 RH |
1965 | int found; |
1966 | ||
1967 | found = 0; | |
9ad5cbcf | 1968 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1969 | { |
1970 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1971 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1972 | { | |
1973 | if (found != 0) | |
1974 | { | |
1975 | found = 0; | |
1976 | break; | |
1977 | } | |
1978 | found = scan; | |
1979 | } | |
1980 | } | |
1981 | if (found != 0) | |
1982 | hdr->sh_link = found; | |
1983 | } | |
1984 | ||
1985 | /* Get the symbol table. */ | |
1b3a8575 AM |
1986 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1987 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1988 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1989 | return FALSE; |
252b5132 RH |
1990 | |
1991 | /* If this reloc section does not use the main symbol table we | |
1992 | don't treat it as a reloc section. BFD can't adequately | |
1993 | represent such a section, so at least for now, we don't | |
c044fabd | 1994 | try. We just present it as a normal section. We also |
60bcf0fa | 1995 | can't use it as a reloc section if it points to the null |
c044fabd | 1996 | section. */ |
60bcf0fa | 1997 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
6dc132d9 L |
1998 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1999 | shindex); | |
252b5132 RH |
2000 | |
2001 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2002 | return FALSE; |
252b5132 RH |
2003 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2004 | if (target_sect == NULL) | |
b34976b6 | 2005 | return FALSE; |
252b5132 RH |
2006 | |
2007 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2008 | || target_sect->reloc_count == 0) | |
2009 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2010 | else | |
2011 | { | |
dc810e39 | 2012 | bfd_size_type amt; |
252b5132 | 2013 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2014 | amt = sizeof (*hdr2); |
217aa764 | 2015 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2016 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2017 | } | |
2018 | *hdr2 = *hdr; | |
2019 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2020 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2021 | target_sect->flags |= SEC_RELOC; |
2022 | target_sect->relocation = NULL; | |
2023 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2024 | /* In the section to which the relocations apply, mark whether |
2025 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2026 | if (hdr->sh_size != 0) |
68bfbfcc | 2027 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2028 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2029 | return TRUE; |
252b5132 RH |
2030 | } |
2031 | break; | |
2032 | ||
2033 | case SHT_GNU_verdef: | |
2034 | elf_dynverdef (abfd) = shindex; | |
2035 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2036 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2037 | break; |
2038 | ||
2039 | case SHT_GNU_versym: | |
2040 | elf_dynversym (abfd) = shindex; | |
2041 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2042 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2043 | break; |
2044 | ||
2045 | case SHT_GNU_verneed: | |
2046 | elf_dynverref (abfd) = shindex; | |
2047 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2048 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2049 | break; |
2050 | ||
2051 | case SHT_SHLIB: | |
b34976b6 | 2052 | return TRUE; |
252b5132 | 2053 | |
dbb410c3 | 2054 | case SHT_GROUP: |
b885599b AM |
2055 | /* We need a BFD section for objcopy and relocatable linking, |
2056 | and it's handy to have the signature available as the section | |
2057 | name. */ | |
2058 | name = group_signature (abfd, hdr); | |
2059 | if (name == NULL) | |
b34976b6 | 2060 | return FALSE; |
6dc132d9 | 2061 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2062 | return FALSE; |
dbb410c3 AM |
2063 | if (hdr->contents != NULL) |
2064 | { | |
2065 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2066 | unsigned int n_elt = hdr->sh_size / 4; | |
2067 | asection *s; | |
2068 | ||
b885599b AM |
2069 | if (idx->flags & GRP_COMDAT) |
2070 | hdr->bfd_section->flags | |
2071 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2072 | ||
45c5e9ed L |
2073 | /* We try to keep the same section order as it comes in. */ |
2074 | idx += n_elt; | |
dbb410c3 | 2075 | while (--n_elt != 0) |
45c5e9ed | 2076 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2077 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2078 | { |
945906ff | 2079 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2080 | break; |
2081 | } | |
2082 | } | |
2083 | break; | |
2084 | ||
252b5132 RH |
2085 | default: |
2086 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2087 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2088 | shindex); | |
252b5132 RH |
2089 | } |
2090 | ||
b34976b6 | 2091 | return TRUE; |
252b5132 RH |
2092 | } |
2093 | ||
ec338859 AM |
2094 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2095 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2096 | ||
2097 | asection * | |
217aa764 AM |
2098 | bfd_section_from_r_symndx (bfd *abfd, |
2099 | struct sym_sec_cache *cache, | |
2100 | asection *sec, | |
2101 | unsigned long r_symndx) | |
ec338859 | 2102 | { |
ec338859 | 2103 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2104 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2105 | Elf_External_Sym_Shndx eshndx; | |
2106 | Elf_Internal_Sym isym; | |
ec338859 AM |
2107 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2108 | ||
2109 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2110 | return cache->sec[ent]; | |
2111 | ||
2112 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2113 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2114 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2115 | return NULL; |
9ad5cbcf | 2116 | |
ec338859 AM |
2117 | if (cache->abfd != abfd) |
2118 | { | |
2119 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2120 | cache->abfd = abfd; | |
2121 | } | |
2122 | cache->indx[ent] = r_symndx; | |
2123 | cache->sec[ent] = sec; | |
50bc7936 AM |
2124 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2125 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2126 | { |
2127 | asection *s; | |
6cdc0ccc | 2128 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2129 | if (s != NULL) |
2130 | cache->sec[ent] = s; | |
2131 | } | |
2132 | return cache->sec[ent]; | |
2133 | } | |
2134 | ||
252b5132 RH |
2135 | /* Given an ELF section number, retrieve the corresponding BFD |
2136 | section. */ | |
2137 | ||
2138 | asection * | |
217aa764 | 2139 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2140 | { |
9ad5cbcf | 2141 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2142 | return NULL; |
2143 | return elf_elfsections (abfd)[index]->bfd_section; | |
2144 | } | |
2145 | ||
7f4d3958 | 2146 | static struct bfd_elf_special_section const special_sections_b[] = |
2f89ff8d | 2147 | { |
7dcb9820 | 2148 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7f4d3958 L |
2149 | { NULL, 0, 0, 0, 0 } |
2150 | }; | |
2151 | ||
2152 | static struct bfd_elf_special_section const special_sections_c[] = | |
2153 | { | |
7dcb9820 | 2154 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
7f4d3958 L |
2155 | { NULL, 0, 0, 0, 0 } |
2156 | }; | |
2157 | ||
2158 | static struct bfd_elf_special_section const special_sections_d[] = | |
2159 | { | |
7dcb9820 AM |
2160 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2161 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2162 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
7dcb9820 AM |
2163 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, |
2164 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2165 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2166 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2167 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2168 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2169 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
7f4d3958 L |
2170 | { NULL, 0, 0, 0, 0 } |
2171 | }; | |
2172 | ||
2173 | static struct bfd_elf_special_section const special_sections_f[] = | |
2174 | { | |
2175 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2176 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2177 | { NULL, 0, 0, 0, 0 } | |
2178 | }; | |
2179 | ||
2180 | static struct bfd_elf_special_section const special_sections_g[] = | |
2181 | { | |
2182 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7dcb9820 | 2183 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2184 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, |
2185 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2186 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
7f4d3958 L |
2187 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2188 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
2189 | { NULL, 0, 0, 0, 0 } | |
2190 | }; | |
2191 | ||
2192 | static struct bfd_elf_special_section const special_sections_h[] = | |
2193 | { | |
2194 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2195 | { NULL, 0, 0, 0, 0 } | |
2196 | }; | |
2197 | ||
2198 | static struct bfd_elf_special_section const special_sections_i[] = | |
2199 | { | |
2200 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2201 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2202 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2203 | { NULL, 0, 0, 0, 0 } | |
2204 | }; | |
2205 | ||
2206 | static struct bfd_elf_special_section const special_sections_l[] = | |
2207 | { | |
2208 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2209 | { NULL, 0, 0, 0, 0 } | |
2210 | }; | |
2211 | ||
2212 | static struct bfd_elf_special_section const special_sections_n[] = | |
2213 | { | |
45c5e9ed | 2214 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 | 2215 | { ".note", 5, -1, SHT_NOTE, 0 }, |
7f4d3958 L |
2216 | { NULL, 0, 0, 0, 0 } |
2217 | }; | |
2218 | ||
2219 | static struct bfd_elf_special_section const special_sections_p[] = | |
2220 | { | |
2221 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2222 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2223 | { NULL, 0, 0, 0, 0 } | |
2224 | }; | |
2225 | ||
2226 | static struct bfd_elf_special_section const special_sections_r[] = | |
2227 | { | |
2228 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2229 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
7dcb9820 AM |
2230 | { ".rela", 5, -1, SHT_RELA, 0 }, |
2231 | { ".rel", 4, -1, SHT_REL, 0 }, | |
7f4d3958 L |
2232 | { NULL, 0, 0, 0, 0 } |
2233 | }; | |
2234 | ||
2235 | static struct bfd_elf_special_section const special_sections_s[] = | |
2236 | { | |
2237 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2238 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2239 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
7dcb9820 AM |
2240 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, |
2241 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2242 | }; |
2243 | ||
7f4d3958 L |
2244 | static struct bfd_elf_special_section const special_sections_t[] = |
2245 | { | |
2246 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2247 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2248 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2249 | { NULL, 0, 0, 0, 0 } | |
2250 | }; | |
2251 | ||
2252 | static struct bfd_elf_special_section const *special_sections [27] = | |
2253 | { | |
2254 | NULL, /* 'a' */ | |
2255 | special_sections_b, /* 'b' */ | |
2256 | special_sections_c, /* 'b' */ | |
2257 | special_sections_d, /* 'd' */ | |
2258 | NULL, /* 'e' */ | |
2259 | special_sections_f, /* 'f' */ | |
2260 | special_sections_g, /* 'g' */ | |
2261 | special_sections_h, /* 'h' */ | |
2262 | special_sections_i, /* 'i' */ | |
2263 | NULL, /* 'j' */ | |
2264 | NULL, /* 'k' */ | |
2265 | special_sections_l, /* 'l' */ | |
2266 | NULL, /* 'm' */ | |
2267 | special_sections_n, /* 'n' */ | |
2268 | NULL, /* 'o' */ | |
2269 | special_sections_p, /* 'p' */ | |
2270 | NULL, /* 'q' */ | |
2271 | special_sections_r, /* 'r' */ | |
2272 | special_sections_s, /* 's' */ | |
2273 | special_sections_t, /* 't' */ | |
2274 | NULL, /* 'u' */ | |
2275 | NULL, /* 'v' */ | |
2276 | NULL, /* 'w' */ | |
2277 | NULL, /* 'x' */ | |
2278 | NULL, /* 'y' */ | |
2279 | NULL, /* 'z' */ | |
2280 | NULL /* other */ | |
2281 | }; | |
2282 | ||
2f89ff8d L |
2283 | static const struct bfd_elf_special_section * |
2284 | get_special_section (const char *name, | |
7f4d3958 | 2285 | const struct bfd_elf_special_section **special_sections_p, |
2f89ff8d L |
2286 | unsigned int rela) |
2287 | { | |
2288 | int i; | |
7f4d3958 L |
2289 | int len; |
2290 | const struct bfd_elf_special_section *special_sections; | |
2291 | ||
2292 | if (name [0] == '.') | |
2293 | { | |
2294 | i = name [1] - 'a'; | |
2295 | if (i < 0 || i > 25) | |
2296 | i = 26; | |
2297 | } | |
2298 | else | |
2299 | i = 26; | |
2300 | ||
2301 | special_sections = special_sections_p [i]; | |
2302 | ||
2303 | if (!special_sections) | |
2304 | return special_sections; | |
2305 | ||
2306 | len= strlen (name); | |
2f89ff8d L |
2307 | |
2308 | for (i = 0; special_sections[i].prefix != NULL; i++) | |
7dcb9820 AM |
2309 | { |
2310 | int suffix_len; | |
2311 | int prefix_len = special_sections[i].prefix_length; | |
2312 | ||
2313 | if (len < prefix_len) | |
2314 | continue; | |
2315 | if (memcmp (name, special_sections[i].prefix, prefix_len) != 0) | |
2316 | continue; | |
2317 | ||
2318 | suffix_len = special_sections[i].suffix_length; | |
2319 | if (suffix_len <= 0) | |
2320 | { | |
2321 | if (name[prefix_len] != 0) | |
2322 | { | |
2323 | if (suffix_len == 0) | |
2324 | continue; | |
2325 | if (name[prefix_len] != '.' | |
2326 | && (suffix_len == -2 | |
2327 | || (rela && special_sections[i].type == SHT_REL))) | |
2328 | continue; | |
2329 | } | |
2330 | } | |
2331 | else | |
2332 | { | |
2333 | if (len < prefix_len + suffix_len) | |
2334 | continue; | |
2335 | if (memcmp (name + len - suffix_len, | |
2336 | special_sections[i].prefix + prefix_len, | |
2337 | suffix_len) != 0) | |
2338 | continue; | |
2339 | } | |
2f89ff8d | 2340 | return &special_sections[i]; |
7dcb9820 | 2341 | } |
2f89ff8d L |
2342 | |
2343 | return NULL; | |
2344 | } | |
2345 | ||
7dcb9820 AM |
2346 | const struct bfd_elf_special_section * |
2347 | _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) | |
2f89ff8d | 2348 | { |
9c5bfbb7 | 2349 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7dcb9820 | 2350 | const struct bfd_elf_special_section *ssect = NULL; |
2f89ff8d L |
2351 | |
2352 | /* See if this is one of the special sections. */ | |
2353 | if (name) | |
2354 | { | |
9c5bfbb7 | 2355 | unsigned int rela = bed->default_use_rela_p; |
2f89ff8d L |
2356 | |
2357 | if (bed->special_sections) | |
2358 | ssect = get_special_section (name, bed->special_sections, rela); | |
2359 | ||
2360 | if (! ssect) | |
2361 | ssect = get_special_section (name, special_sections, rela); | |
2f89ff8d L |
2362 | } |
2363 | ||
7dcb9820 | 2364 | return ssect; |
2f89ff8d L |
2365 | } |
2366 | ||
b34976b6 | 2367 | bfd_boolean |
217aa764 | 2368 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2369 | { |
2370 | struct bfd_elf_section_data *sdata; | |
7dcb9820 | 2371 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2372 | |
f0abc2a1 AM |
2373 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2374 | if (sdata == NULL) | |
2375 | { | |
217aa764 | 2376 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2377 | if (sdata == NULL) |
2378 | return FALSE; | |
217aa764 | 2379 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2380 | } |
bf572ba0 | 2381 | |
3496cb2a L |
2382 | /* When we read a file, we don't need section type and flags unless |
2383 | it is a linker created section. They will be overridden in | |
2384 | _bfd_elf_make_section_from_shdr anyway. */ | |
2385 | if (abfd->direction != read_direction | |
2386 | || (sec->flags & SEC_LINKER_CREATED) != 0) | |
2f89ff8d | 2387 | { |
a31501e9 L |
2388 | ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); |
2389 | if (ssect != NULL) | |
2390 | { | |
2391 | elf_section_type (sec) = ssect->type; | |
2392 | elf_section_flags (sec) = ssect->attr; | |
2393 | } | |
2f89ff8d L |
2394 | } |
2395 | ||
bf572ba0 | 2396 | /* Indicate whether or not this section should use RELA relocations. */ |
68bfbfcc | 2397 | sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; |
bf572ba0 | 2398 | |
b34976b6 | 2399 | return TRUE; |
252b5132 RH |
2400 | } |
2401 | ||
2402 | /* Create a new bfd section from an ELF program header. | |
2403 | ||
2404 | Since program segments have no names, we generate a synthetic name | |
2405 | of the form segment<NUM>, where NUM is generally the index in the | |
2406 | program header table. For segments that are split (see below) we | |
2407 | generate the names segment<NUM>a and segment<NUM>b. | |
2408 | ||
2409 | Note that some program segments may have a file size that is different than | |
2410 | (less than) the memory size. All this means is that at execution the | |
2411 | system must allocate the amount of memory specified by the memory size, | |
2412 | but only initialize it with the first "file size" bytes read from the | |
2413 | file. This would occur for example, with program segments consisting | |
2414 | of combined data+bss. | |
2415 | ||
2416 | To handle the above situation, this routine generates TWO bfd sections | |
2417 | for the single program segment. The first has the length specified by | |
2418 | the file size of the segment, and the second has the length specified | |
2419 | by the difference between the two sizes. In effect, the segment is split | |
2420 | into it's initialized and uninitialized parts. | |
2421 | ||
2422 | */ | |
2423 | ||
b34976b6 | 2424 | bfd_boolean |
217aa764 AM |
2425 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2426 | Elf_Internal_Phdr *hdr, | |
2427 | int index, | |
2428 | const char *typename) | |
252b5132 RH |
2429 | { |
2430 | asection *newsect; | |
2431 | char *name; | |
2432 | char namebuf[64]; | |
d4c88bbb | 2433 | size_t len; |
252b5132 RH |
2434 | int split; |
2435 | ||
2436 | split = ((hdr->p_memsz > 0) | |
2437 | && (hdr->p_filesz > 0) | |
2438 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2439 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2440 | len = strlen (namebuf) + 1; |
217aa764 | 2441 | name = bfd_alloc (abfd, len); |
252b5132 | 2442 | if (!name) |
b34976b6 | 2443 | return FALSE; |
d4c88bbb | 2444 | memcpy (name, namebuf, len); |
252b5132 RH |
2445 | newsect = bfd_make_section (abfd, name); |
2446 | if (newsect == NULL) | |
b34976b6 | 2447 | return FALSE; |
252b5132 RH |
2448 | newsect->vma = hdr->p_vaddr; |
2449 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2450 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2451 | newsect->filepos = hdr->p_offset; |
2452 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2453 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2454 | if (hdr->p_type == PT_LOAD) |
2455 | { | |
2456 | newsect->flags |= SEC_ALLOC; | |
2457 | newsect->flags |= SEC_LOAD; | |
2458 | if (hdr->p_flags & PF_X) | |
2459 | { | |
2460 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2461 | may be data. */ |
252b5132 RH |
2462 | newsect->flags |= SEC_CODE; |
2463 | } | |
2464 | } | |
2465 | if (!(hdr->p_flags & PF_W)) | |
2466 | { | |
2467 | newsect->flags |= SEC_READONLY; | |
2468 | } | |
2469 | ||
2470 | if (split) | |
2471 | { | |
27ac83bf | 2472 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2473 | len = strlen (namebuf) + 1; |
217aa764 | 2474 | name = bfd_alloc (abfd, len); |
252b5132 | 2475 | if (!name) |
b34976b6 | 2476 | return FALSE; |
d4c88bbb | 2477 | memcpy (name, namebuf, len); |
252b5132 RH |
2478 | newsect = bfd_make_section (abfd, name); |
2479 | if (newsect == NULL) | |
b34976b6 | 2480 | return FALSE; |
252b5132 RH |
2481 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2482 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2483 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2484 | if (hdr->p_type == PT_LOAD) |
2485 | { | |
2486 | newsect->flags |= SEC_ALLOC; | |
2487 | if (hdr->p_flags & PF_X) | |
2488 | newsect->flags |= SEC_CODE; | |
2489 | } | |
2490 | if (!(hdr->p_flags & PF_W)) | |
2491 | newsect->flags |= SEC_READONLY; | |
2492 | } | |
2493 | ||
b34976b6 | 2494 | return TRUE; |
252b5132 RH |
2495 | } |
2496 | ||
b34976b6 | 2497 | bfd_boolean |
217aa764 | 2498 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2499 | { |
9c5bfbb7 | 2500 | const struct elf_backend_data *bed; |
20cfcaae NC |
2501 | |
2502 | switch (hdr->p_type) | |
2503 | { | |
2504 | case PT_NULL: | |
2505 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2506 | ||
2507 | case PT_LOAD: | |
2508 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2509 | ||
2510 | case PT_DYNAMIC: | |
2511 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2512 | ||
2513 | case PT_INTERP: | |
2514 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2515 | ||
2516 | case PT_NOTE: | |
2517 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2518 | return FALSE; |
217aa764 | 2519 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2520 | return FALSE; |
2521 | return TRUE; | |
20cfcaae NC |
2522 | |
2523 | case PT_SHLIB: | |
2524 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2525 | ||
2526 | case PT_PHDR: | |
2527 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2528 | ||
811072d8 RM |
2529 | case PT_GNU_EH_FRAME: |
2530 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2531 | "eh_frame_hdr"); | |
2532 | ||
9ee5e499 JJ |
2533 | case PT_GNU_STACK: |
2534 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2535 | ||
8c37241b JJ |
2536 | case PT_GNU_RELRO: |
2537 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2538 | ||
20cfcaae | 2539 | default: |
8c1acd09 | 2540 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2541 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2542 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2543 | } |
2544 | } | |
2545 | ||
23bc299b | 2546 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2547 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2548 | relocations; otherwise, we use REL relocations. */ |
2549 | ||
b34976b6 | 2550 | bfd_boolean |
217aa764 AM |
2551 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2552 | Elf_Internal_Shdr *rel_hdr, | |
2553 | asection *asect, | |
2554 | bfd_boolean use_rela_p) | |
23bc299b MM |
2555 | { |
2556 | char *name; | |
9c5bfbb7 | 2557 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2558 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2559 | |
dc810e39 | 2560 | name = bfd_alloc (abfd, amt); |
23bc299b | 2561 | if (name == NULL) |
b34976b6 | 2562 | return FALSE; |
23bc299b MM |
2563 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2564 | rel_hdr->sh_name = | |
2b0f7ef9 | 2565 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2566 | FALSE); |
23bc299b | 2567 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2568 | return FALSE; |
23bc299b MM |
2569 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2570 | rel_hdr->sh_entsize = (use_rela_p | |
2571 | ? bed->s->sizeof_rela | |
2572 | : bed->s->sizeof_rel); | |
45d6a902 | 2573 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2574 | rel_hdr->sh_flags = 0; |
2575 | rel_hdr->sh_addr = 0; | |
2576 | rel_hdr->sh_size = 0; | |
2577 | rel_hdr->sh_offset = 0; | |
2578 | ||
b34976b6 | 2579 | return TRUE; |
23bc299b MM |
2580 | } |
2581 | ||
252b5132 RH |
2582 | /* Set up an ELF internal section header for a section. */ |
2583 | ||
252b5132 | 2584 | static void |
217aa764 | 2585 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2586 | { |
9c5bfbb7 | 2587 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2588 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2589 | Elf_Internal_Shdr *this_hdr; |
2590 | ||
2591 | if (*failedptr) | |
2592 | { | |
2593 | /* We already failed; just get out of the bfd_map_over_sections | |
2594 | loop. */ | |
2595 | return; | |
2596 | } | |
2597 | ||
2598 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2599 | ||
e57b5356 AM |
2600 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2601 | asect->name, FALSE); | |
2602 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2603 | { |
b34976b6 | 2604 | *failedptr = TRUE; |
252b5132 RH |
2605 | return; |
2606 | } | |
2607 | ||
2608 | this_hdr->sh_flags = 0; | |
2609 | ||
2610 | if ((asect->flags & SEC_ALLOC) != 0 | |
2611 | || asect->user_set_vma) | |
2612 | this_hdr->sh_addr = asect->vma; | |
2613 | else | |
2614 | this_hdr->sh_addr = 0; | |
2615 | ||
2616 | this_hdr->sh_offset = 0; | |
eea6121a | 2617 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2618 | this_hdr->sh_link = 0; |
2619 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2620 | /* The sh_entsize and sh_info fields may have been set already by | |
2621 | copy_private_section_data. */ | |
2622 | ||
2623 | this_hdr->bfd_section = asect; | |
2624 | this_hdr->contents = NULL; | |
2625 | ||
3cddba1e L |
2626 | /* If the section type is unspecified, we set it based on |
2627 | asect->flags. */ | |
2628 | if (this_hdr->sh_type == SHT_NULL) | |
2629 | { | |
45c5e9ed L |
2630 | if ((asect->flags & SEC_GROUP) != 0) |
2631 | { | |
2632 | /* We also need to mark SHF_GROUP here for relocatable | |
2633 | link. */ | |
2634 | struct bfd_link_order *l; | |
2635 | asection *elt; | |
2636 | ||
8423293d | 2637 | for (l = asect->map_head.link_order; l != NULL; l = l->next) |
45c5e9ed L |
2638 | if (l->type == bfd_indirect_link_order |
2639 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2640 | do | |
2641 | { | |
2642 | /* The name is not important. Anything will do. */ | |
2643 | elf_group_name (elt->output_section) = "G"; | |
2644 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2645 | ||
2646 | elt = elf_next_in_group (elt); | |
2647 | /* During a relocatable link, the lists are | |
2648 | circular. */ | |
2649 | } | |
2650 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2651 | ||
2652 | this_hdr->sh_type = SHT_GROUP; | |
2653 | } | |
2654 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2655 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2656 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2657 | this_hdr->sh_type = SHT_NOBITS; | |
2658 | else | |
2659 | this_hdr->sh_type = SHT_PROGBITS; | |
2660 | } | |
2661 | ||
2f89ff8d | 2662 | switch (this_hdr->sh_type) |
252b5132 | 2663 | { |
2f89ff8d | 2664 | default: |
2f89ff8d L |
2665 | break; |
2666 | ||
2667 | case SHT_STRTAB: | |
2668 | case SHT_INIT_ARRAY: | |
2669 | case SHT_FINI_ARRAY: | |
2670 | case SHT_PREINIT_ARRAY: | |
2671 | case SHT_NOTE: | |
2672 | case SHT_NOBITS: | |
2673 | case SHT_PROGBITS: | |
2674 | break; | |
2675 | ||
2676 | case SHT_HASH: | |
c7ac6ff8 | 2677 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2678 | break; |
5de3bf90 | 2679 | |
2f89ff8d | 2680 | case SHT_DYNSYM: |
252b5132 | 2681 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2682 | break; |
2683 | ||
2684 | case SHT_DYNAMIC: | |
252b5132 | 2685 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2686 | break; |
2687 | ||
2688 | case SHT_RELA: | |
2689 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2690 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2691 | break; | |
2692 | ||
2693 | case SHT_REL: | |
2694 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2695 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2696 | break; | |
2697 | ||
2698 | case SHT_GNU_versym: | |
252b5132 | 2699 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2700 | break; |
2701 | ||
2702 | case SHT_GNU_verdef: | |
252b5132 RH |
2703 | this_hdr->sh_entsize = 0; |
2704 | /* objcopy or strip will copy over sh_info, but may not set | |
2705 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2706 | zero. */ | |
2707 | if (this_hdr->sh_info == 0) | |
2708 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2709 | else | |
2710 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2711 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2712 | break; |
2713 | ||
2714 | case SHT_GNU_verneed: | |
252b5132 RH |
2715 | this_hdr->sh_entsize = 0; |
2716 | /* objcopy or strip will copy over sh_info, but may not set | |
2717 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2718 | zero. */ | |
2719 | if (this_hdr->sh_info == 0) | |
2720 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2721 | else | |
2722 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2723 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2724 | break; |
2725 | ||
2726 | case SHT_GROUP: | |
dbb410c3 | 2727 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2728 | break; |
dbb410c3 | 2729 | } |
252b5132 RH |
2730 | |
2731 | if ((asect->flags & SEC_ALLOC) != 0) | |
2732 | this_hdr->sh_flags |= SHF_ALLOC; | |
2733 | if ((asect->flags & SEC_READONLY) == 0) | |
2734 | this_hdr->sh_flags |= SHF_WRITE; | |
2735 | if ((asect->flags & SEC_CODE) != 0) | |
2736 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2737 | if ((asect->flags & SEC_MERGE) != 0) |
2738 | { | |
2739 | this_hdr->sh_flags |= SHF_MERGE; | |
2740 | this_hdr->sh_entsize = asect->entsize; | |
2741 | if ((asect->flags & SEC_STRINGS) != 0) | |
2742 | this_hdr->sh_flags |= SHF_STRINGS; | |
2743 | } | |
1126897b | 2744 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2745 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2746 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2747 | { |
2748 | this_hdr->sh_flags |= SHF_TLS; | |
eea6121a | 2749 | if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) |
704afa60 JJ |
2750 | { |
2751 | struct bfd_link_order *o; | |
b34976b6 | 2752 | |
704afa60 | 2753 | this_hdr->sh_size = 0; |
8423293d | 2754 | for (o = asect->map_head.link_order; o != NULL; o = o->next) |
704afa60 JJ |
2755 | if (this_hdr->sh_size < o->offset + o->size) |
2756 | this_hdr->sh_size = o->offset + o->size; | |
2757 | if (this_hdr->sh_size) | |
2758 | this_hdr->sh_type = SHT_NOBITS; | |
2759 | } | |
2760 | } | |
252b5132 RH |
2761 | |
2762 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2763 | if (bed->elf_backend_fake_sections |
2764 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2765 | *failedptr = TRUE; |
252b5132 RH |
2766 | |
2767 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2768 | SHT_REL[A] section. If two relocation sections are required for |
2769 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2770 | create the other. */ |
23bc299b | 2771 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2772 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2773 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2774 | asect, |
68bfbfcc | 2775 | asect->use_rela_p)) |
b34976b6 | 2776 | *failedptr = TRUE; |
252b5132 RH |
2777 | } |
2778 | ||
dbb410c3 AM |
2779 | /* Fill in the contents of a SHT_GROUP section. */ |
2780 | ||
1126897b | 2781 | void |
217aa764 | 2782 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2783 | { |
217aa764 | 2784 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2785 | unsigned long symindx; |
9dce4196 | 2786 | asection *elt, *first; |
dbb410c3 AM |
2787 | unsigned char *loc; |
2788 | struct bfd_link_order *l; | |
b34976b6 | 2789 | bfd_boolean gas; |
dbb410c3 | 2790 | |
7e4111ad L |
2791 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2792 | elfxx-ia64.c. */ | |
2793 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2794 | || *failedptr) |
2795 | return; | |
2796 | ||
1126897b AM |
2797 | symindx = 0; |
2798 | if (elf_group_id (sec) != NULL) | |
2799 | symindx = elf_group_id (sec)->udata.i; | |
2800 | ||
2801 | if (symindx == 0) | |
2802 | { | |
2803 | /* If called from the assembler, swap_out_syms will have set up | |
2804 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2805 | if (elf_section_syms (abfd) != NULL) | |
2806 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2807 | else | |
2808 | symindx = sec->target_index; | |
2809 | } | |
dbb410c3 AM |
2810 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2811 | ||
1126897b | 2812 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2813 | gas = TRUE; |
dbb410c3 AM |
2814 | if (sec->contents == NULL) |
2815 | { | |
b34976b6 | 2816 | gas = FALSE; |
eea6121a | 2817 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2818 | |
2819 | /* Arrange for the section to be written out. */ | |
2820 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2821 | if (sec->contents == NULL) |
2822 | { | |
b34976b6 | 2823 | *failedptr = TRUE; |
dbb410c3 AM |
2824 | return; |
2825 | } | |
2826 | } | |
2827 | ||
eea6121a | 2828 | loc = sec->contents + sec->size; |
dbb410c3 | 2829 | |
9dce4196 AM |
2830 | /* Get the pointer to the first section in the group that gas |
2831 | squirreled away here. objcopy arranges for this to be set to the | |
2832 | start of the input section group. */ | |
2833 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2834 | |
2835 | /* First element is a flag word. Rest of section is elf section | |
2836 | indices for all the sections of the group. Write them backwards | |
2837 | just to keep the group in the same order as given in .section | |
2838 | directives, not that it matters. */ | |
2839 | while (elt != NULL) | |
2840 | { | |
9dce4196 AM |
2841 | asection *s; |
2842 | unsigned int idx; | |
2843 | ||
dbb410c3 | 2844 | loc -= 4; |
9dce4196 AM |
2845 | s = elt; |
2846 | if (!gas) | |
2847 | s = s->output_section; | |
2848 | idx = 0; | |
2849 | if (s != NULL) | |
2850 | idx = elf_section_data (s)->this_idx; | |
2851 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2852 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2853 | if (elt == first) |
2854 | break; | |
dbb410c3 AM |
2855 | } |
2856 | ||
2857 | /* If this is a relocatable link, then the above did nothing because | |
2858 | SEC is the output section. Look through the input sections | |
2859 | instead. */ | |
8423293d | 2860 | for (l = sec->map_head.link_order; l != NULL; l = l->next) |
dbb410c3 | 2861 | if (l->type == bfd_indirect_link_order |
945906ff | 2862 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2863 | do |
2864 | { | |
2865 | loc -= 4; | |
2866 | H_PUT_32 (abfd, | |
2867 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2868 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2869 | /* During a relocatable link, the lists are circular. */ |
2870 | } | |
945906ff | 2871 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2872 | |
3d7f7666 | 2873 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2874 | abort (); |
dbb410c3 | 2875 | |
9dce4196 | 2876 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2877 | } |
2878 | ||
252b5132 RH |
2879 | /* Assign all ELF section numbers. The dummy first section is handled here |
2880 | too. The link/info pointers for the standard section types are filled | |
2881 | in here too, while we're at it. */ | |
2882 | ||
b34976b6 | 2883 | static bfd_boolean |
da9f89d4 | 2884 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2885 | { |
2886 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2887 | asection *sec; | |
2b0f7ef9 | 2888 | unsigned int section_number, secn; |
252b5132 | 2889 | Elf_Internal_Shdr **i_shdrp; |
dc810e39 | 2890 | bfd_size_type amt; |
47cc2cf5 | 2891 | struct bfd_elf_section_data *d; |
252b5132 RH |
2892 | |
2893 | section_number = 1; | |
2894 | ||
2b0f7ef9 JJ |
2895 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2896 | ||
da9f89d4 L |
2897 | /* SHT_GROUP sections are in relocatable files only. */ |
2898 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2899 | { |
da9f89d4 | 2900 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2901 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2902 | { |
5daa8fe7 | 2903 | d = elf_section_data (sec); |
da9f89d4 L |
2904 | |
2905 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2906 | { | |
5daa8fe7 | 2907 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2908 | { |
2909 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2910 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2911 | abfd->section_count--; |
da9f89d4 L |
2912 | } |
2913 | else | |
2914 | { | |
2915 | if (section_number == SHN_LORESERVE) | |
2916 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2917 | d->this_idx = section_number++; | |
2918 | } | |
2919 | } | |
47cc2cf5 PB |
2920 | } |
2921 | } | |
2922 | ||
2923 | for (sec = abfd->sections; sec; sec = sec->next) | |
2924 | { | |
2925 | d = elf_section_data (sec); | |
2926 | ||
2927 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2928 | { | |
2929 | if (section_number == SHN_LORESERVE) | |
2930 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2931 | d->this_idx = section_number++; | |
2932 | } | |
2b0f7ef9 | 2933 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2934 | if ((sec->flags & SEC_RELOC) == 0) |
2935 | d->rel_idx = 0; | |
2936 | else | |
2b0f7ef9 | 2937 | { |
9ad5cbcf AM |
2938 | if (section_number == SHN_LORESERVE) |
2939 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2940 | d->rel_idx = section_number++; |
2941 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2942 | } | |
23bc299b MM |
2943 | |
2944 | if (d->rel_hdr2) | |
2b0f7ef9 | 2945 | { |
9ad5cbcf AM |
2946 | if (section_number == SHN_LORESERVE) |
2947 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2948 | d->rel_idx2 = section_number++; |
2949 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2950 | } | |
23bc299b MM |
2951 | else |
2952 | d->rel_idx2 = 0; | |
252b5132 RH |
2953 | } |
2954 | ||
9ad5cbcf AM |
2955 | if (section_number == SHN_LORESERVE) |
2956 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2957 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2958 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2959 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2960 | |
2961 | if (bfd_get_symcount (abfd) > 0) | |
2962 | { | |
9ad5cbcf AM |
2963 | if (section_number == SHN_LORESERVE) |
2964 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2965 | t->symtab_section = section_number++; |
2b0f7ef9 | 2966 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2967 | if (section_number > SHN_LORESERVE - 2) |
2968 | { | |
2969 | if (section_number == SHN_LORESERVE) | |
2970 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2971 | t->symtab_shndx_section = section_number++; | |
2972 | t->symtab_shndx_hdr.sh_name | |
2973 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2974 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2975 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2976 | return FALSE; |
9ad5cbcf AM |
2977 | } |
2978 | if (section_number == SHN_LORESERVE) | |
2979 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2980 | t->strtab_section = section_number++; |
2b0f7ef9 | 2981 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2982 | } |
2983 | ||
2b0f7ef9 JJ |
2984 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2985 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2986 | |
2987 | elf_numsections (abfd) = section_number; | |
252b5132 | 2988 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2989 | if (section_number > SHN_LORESERVE) |
2990 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2991 | |
2992 | /* Set up the list of section header pointers, in agreement with the | |
2993 | indices. */ | |
dc810e39 | 2994 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
217aa764 | 2995 | i_shdrp = bfd_zalloc (abfd, amt); |
252b5132 | 2996 | if (i_shdrp == NULL) |
b34976b6 | 2997 | return FALSE; |
252b5132 | 2998 | |
dc810e39 | 2999 | amt = sizeof (Elf_Internal_Shdr); |
217aa764 | 3000 | i_shdrp[0] = bfd_zalloc (abfd, amt); |
252b5132 RH |
3001 | if (i_shdrp[0] == NULL) |
3002 | { | |
3003 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3004 | return FALSE; |
252b5132 | 3005 | } |
252b5132 RH |
3006 | |
3007 | elf_elfsections (abfd) = i_shdrp; | |
3008 | ||
3009 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3010 | if (bfd_get_symcount (abfd) > 0) | |
3011 | { | |
3012 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3013 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3014 | { | |
3015 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3016 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3017 | } | |
252b5132 RH |
3018 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3019 | t->symtab_hdr.sh_link = t->strtab_section; | |
3020 | } | |
38ce5b11 | 3021 | |
252b5132 RH |
3022 | for (sec = abfd->sections; sec; sec = sec->next) |
3023 | { | |
3024 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3025 | asection *s; | |
3026 | const char *name; | |
3027 | ||
3028 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3029 | if (d->rel_idx != 0) | |
3030 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3031 | if (d->rel_idx2 != 0) |
3032 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3033 | |
3034 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3035 | ||
3036 | /* sh_link of a reloc section is the section index of the symbol | |
3037 | table. sh_info is the section index of the section to which | |
3038 | the relocation entries apply. */ | |
3039 | if (d->rel_idx != 0) | |
3040 | { | |
3041 | d->rel_hdr.sh_link = t->symtab_section; | |
3042 | d->rel_hdr.sh_info = d->this_idx; | |
3043 | } | |
23bc299b MM |
3044 | if (d->rel_idx2 != 0) |
3045 | { | |
3046 | d->rel_hdr2->sh_link = t->symtab_section; | |
3047 | d->rel_hdr2->sh_info = d->this_idx; | |
3048 | } | |
252b5132 | 3049 | |
38ce5b11 L |
3050 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3051 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3052 | { | |
3053 | s = elf_linked_to_section (sec); | |
3054 | if (s) | |
3055 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3056 | else | |
3057 | { | |
3058 | struct bfd_link_order *p; | |
3059 | ||
3060 | /* Find out what the corresponding section in output | |
3061 | is. */ | |
8423293d | 3062 | for (p = sec->map_head.link_order; p != NULL; p = p->next) |
38ce5b11 L |
3063 | { |
3064 | s = p->u.indirect.section; | |
3065 | if (p->type == bfd_indirect_link_order | |
3066 | && (bfd_get_flavour (s->owner) | |
3067 | == bfd_target_elf_flavour)) | |
3068 | { | |
3069 | Elf_Internal_Shdr ** const elf_shdrp | |
3070 | = elf_elfsections (s->owner); | |
3071 | int elfsec | |
3072 | = _bfd_elf_section_from_bfd_section (s->owner, s); | |
3073 | elfsec = elf_shdrp[elfsec]->sh_link; | |
185d09ad L |
3074 | /* PR 290: |
3075 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
ff01938b | 3076 | SHF_LINK_ORDER. But it doesn't set the sh_link or |
185d09ad L |
3077 | sh_info fields. Hence we could get the situation |
3078 | where elfsec is 0. */ | |
3079 | if (elfsec == 0) | |
3080 | { | |
3081 | const struct elf_backend_data *bed | |
3082 | = get_elf_backend_data (abfd); | |
3083 | if (bed->link_order_error_handler) | |
d003868e | 3084 | bed->link_order_error_handler |
28b13744 | 3085 | (_("%B: warning: sh_link not set for section `%A'"), |
d003868e | 3086 | abfd, s); |
185d09ad L |
3087 | } |
3088 | else | |
3089 | { | |
01b3c8ab L |
3090 | s = elf_shdrp[elfsec]->bfd_section; |
3091 | if (elf_discarded_section (s)) | |
3092 | { | |
3093 | asection *kept; | |
3094 | (*_bfd_error_handler) | |
3095 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3096 | abfd, d->this_hdr.bfd_section, | |
3097 | s, s->owner); | |
3098 | /* Point to the kept section if it has | |
3099 | the same size as the discarded | |
3100 | one. */ | |
3101 | kept = _bfd_elf_check_kept_section (s); | |
3102 | if (kept == NULL) | |
3103 | { | |
3104 | bfd_set_error (bfd_error_bad_value); | |
3105 | return FALSE; | |
3106 | } | |
2796fd96 | 3107 | s = kept; |
01b3c8ab L |
3108 | } |
3109 | s = s->output_section; | |
185d09ad L |
3110 | BFD_ASSERT (s != NULL); |
3111 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3112 | } | |
38ce5b11 L |
3113 | break; |
3114 | } | |
3115 | } | |
3116 | } | |
3117 | } | |
3118 | ||
252b5132 RH |
3119 | switch (d->this_hdr.sh_type) |
3120 | { | |
3121 | case SHT_REL: | |
3122 | case SHT_RELA: | |
3123 | /* A reloc section which we are treating as a normal BFD | |
3124 | section. sh_link is the section index of the symbol | |
3125 | table. sh_info is the section index of the section to | |
3126 | which the relocation entries apply. We assume that an | |
3127 | allocated reloc section uses the dynamic symbol table. | |
3128 | FIXME: How can we be sure? */ | |
3129 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3130 | if (s != NULL) | |
3131 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3132 | ||
3133 | /* We look up the section the relocs apply to by name. */ | |
3134 | name = sec->name; | |
3135 | if (d->this_hdr.sh_type == SHT_REL) | |
3136 | name += 4; | |
3137 | else | |
3138 | name += 5; | |
3139 | s = bfd_get_section_by_name (abfd, name); | |
3140 | if (s != NULL) | |
3141 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3142 | break; | |
3143 | ||
3144 | case SHT_STRTAB: | |
3145 | /* We assume that a section named .stab*str is a stabs | |
3146 | string section. We look for a section with the same name | |
3147 | but without the trailing ``str'', and set its sh_link | |
3148 | field to point to this section. */ | |
3149 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3150 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3151 | { | |
3152 | size_t len; | |
3153 | char *alc; | |
3154 | ||
3155 | len = strlen (sec->name); | |
217aa764 | 3156 | alc = bfd_malloc (len - 2); |
252b5132 | 3157 | if (alc == NULL) |
b34976b6 | 3158 | return FALSE; |
d4c88bbb | 3159 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3160 | alc[len - 3] = '\0'; |
3161 | s = bfd_get_section_by_name (abfd, alc); | |
3162 | free (alc); | |
3163 | if (s != NULL) | |
3164 | { | |
3165 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3166 | ||
3167 | /* This is a .stab section. */ | |
0594c12d AM |
3168 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3169 | elf_section_data (s)->this_hdr.sh_entsize | |
3170 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3171 | } |
3172 | } | |
3173 | break; | |
3174 | ||
3175 | case SHT_DYNAMIC: | |
3176 | case SHT_DYNSYM: | |
3177 | case SHT_GNU_verneed: | |
3178 | case SHT_GNU_verdef: | |
3179 | /* sh_link is the section header index of the string table | |
3180 | used for the dynamic entries, or the symbol table, or the | |
3181 | version strings. */ | |
3182 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3183 | if (s != NULL) | |
3184 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3185 | break; | |
3186 | ||
7f1204bb JJ |
3187 | case SHT_GNU_LIBLIST: |
3188 | /* sh_link is the section header index of the prelink library | |
3189 | list | |
3190 | used for the dynamic entries, or the symbol table, or the | |
3191 | version strings. */ | |
3192 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3193 | ? ".dynstr" : ".gnu.libstr"); | |
3194 | if (s != NULL) | |
3195 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3196 | break; | |
3197 | ||
252b5132 RH |
3198 | case SHT_HASH: |
3199 | case SHT_GNU_versym: | |
3200 | /* sh_link is the section header index of the symbol table | |
3201 | this hash table or version table is for. */ | |
3202 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3203 | if (s != NULL) | |
3204 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3205 | break; | |
dbb410c3 AM |
3206 | |
3207 | case SHT_GROUP: | |
3208 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3209 | } |
3210 | } | |
3211 | ||
2b0f7ef9 | 3212 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3213 | if (i_shdrp[secn] == NULL) |
3214 | i_shdrp[secn] = i_shdrp[0]; | |
3215 | else | |
3216 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3217 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3218 | return TRUE; |
252b5132 RH |
3219 | } |
3220 | ||
3221 | /* Map symbol from it's internal number to the external number, moving | |
3222 | all local symbols to be at the head of the list. */ | |
3223 | ||
268b6b39 | 3224 | static int |
217aa764 | 3225 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3226 | { |
3227 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3228 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3229 | if (bed->elf_backend_sym_is_global) |
3230 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3231 | |
3232 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3233 | || bfd_is_und_section (bfd_get_section (sym)) | |
3234 | || bfd_is_com_section (bfd_get_section (sym))); | |
3235 | } | |
3236 | ||
b34976b6 | 3237 | static bfd_boolean |
217aa764 | 3238 | elf_map_symbols (bfd *abfd) |
252b5132 | 3239 | { |
dc810e39 | 3240 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3241 | asymbol **syms = bfd_get_outsymbols (abfd); |
3242 | asymbol **sect_syms; | |
dc810e39 AM |
3243 | unsigned int num_locals = 0; |
3244 | unsigned int num_globals = 0; | |
3245 | unsigned int num_locals2 = 0; | |
3246 | unsigned int num_globals2 = 0; | |
252b5132 | 3247 | int max_index = 0; |
dc810e39 | 3248 | unsigned int idx; |
252b5132 RH |
3249 | asection *asect; |
3250 | asymbol **new_syms; | |
dc810e39 | 3251 | bfd_size_type amt; |
252b5132 RH |
3252 | |
3253 | #ifdef DEBUG | |
3254 | fprintf (stderr, "elf_map_symbols\n"); | |
3255 | fflush (stderr); | |
3256 | #endif | |
3257 | ||
252b5132 RH |
3258 | for (asect = abfd->sections; asect; asect = asect->next) |
3259 | { | |
3260 | if (max_index < asect->index) | |
3261 | max_index = asect->index; | |
3262 | } | |
3263 | ||
3264 | max_index++; | |
dc810e39 | 3265 | amt = max_index * sizeof (asymbol *); |
217aa764 | 3266 | sect_syms = bfd_zalloc (abfd, amt); |
252b5132 | 3267 | if (sect_syms == NULL) |
b34976b6 | 3268 | return FALSE; |
252b5132 | 3269 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3270 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3271 | |
079e9a2f AM |
3272 | /* Init sect_syms entries for any section symbols we have already |
3273 | decided to output. */ | |
252b5132 RH |
3274 | for (idx = 0; idx < symcount; idx++) |
3275 | { | |
dc810e39 | 3276 | asymbol *sym = syms[idx]; |
c044fabd | 3277 | |
252b5132 RH |
3278 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3279 | && sym->value == 0) | |
3280 | { | |
3281 | asection *sec; | |
3282 | ||
3283 | sec = sym->section; | |
3284 | ||
3285 | if (sec->owner != NULL) | |
3286 | { | |
3287 | if (sec->owner != abfd) | |
3288 | { | |
3289 | if (sec->output_offset != 0) | |
3290 | continue; | |
c044fabd | 3291 | |
252b5132 RH |
3292 | sec = sec->output_section; |
3293 | ||
079e9a2f AM |
3294 | /* Empty sections in the input files may have had a |
3295 | section symbol created for them. (See the comment | |
3296 | near the end of _bfd_generic_link_output_symbols in | |
3297 | linker.c). If the linker script discards such | |
3298 | sections then we will reach this point. Since we know | |
3299 | that we cannot avoid this case, we detect it and skip | |
3300 | the abort and the assignment to the sect_syms array. | |
3301 | To reproduce this particular case try running the | |
3302 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3303 | port that uses the generic linker. */ | |
252b5132 RH |
3304 | if (sec->owner == NULL) |
3305 | continue; | |
3306 | ||
3307 | BFD_ASSERT (sec->owner == abfd); | |
3308 | } | |
3309 | sect_syms[sec->index] = syms[idx]; | |
3310 | } | |
3311 | } | |
3312 | } | |
3313 | ||
252b5132 RH |
3314 | /* Classify all of the symbols. */ |
3315 | for (idx = 0; idx < symcount; idx++) | |
3316 | { | |
3317 | if (!sym_is_global (abfd, syms[idx])) | |
3318 | num_locals++; | |
3319 | else | |
3320 | num_globals++; | |
3321 | } | |
079e9a2f AM |
3322 | |
3323 | /* We will be adding a section symbol for each BFD section. Most normal | |
3324 | sections will already have a section symbol in outsymbols, but | |
3325 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3326 | at least in that case. */ | |
252b5132 RH |
3327 | for (asect = abfd->sections; asect; asect = asect->next) |
3328 | { | |
079e9a2f | 3329 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3330 | { |
079e9a2f | 3331 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3332 | num_locals++; |
3333 | else | |
3334 | num_globals++; | |
252b5132 RH |
3335 | } |
3336 | } | |
3337 | ||
3338 | /* Now sort the symbols so the local symbols are first. */ | |
dc810e39 | 3339 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
217aa764 | 3340 | new_syms = bfd_alloc (abfd, amt); |
dc810e39 | 3341 | |
252b5132 | 3342 | if (new_syms == NULL) |
b34976b6 | 3343 | return FALSE; |
252b5132 RH |
3344 | |
3345 | for (idx = 0; idx < symcount; idx++) | |
3346 | { | |
3347 | asymbol *sym = syms[idx]; | |
dc810e39 | 3348 | unsigned int i; |
252b5132 RH |
3349 | |
3350 | if (!sym_is_global (abfd, sym)) | |
3351 | i = num_locals2++; | |
3352 | else | |
3353 | i = num_locals + num_globals2++; | |
3354 | new_syms[i] = sym; | |
3355 | sym->udata.i = i + 1; | |
3356 | } | |
3357 | for (asect = abfd->sections; asect; asect = asect->next) | |
3358 | { | |
079e9a2f | 3359 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3360 | { |
079e9a2f | 3361 | asymbol *sym = asect->symbol; |
dc810e39 | 3362 | unsigned int i; |
252b5132 | 3363 | |
079e9a2f | 3364 | sect_syms[asect->index] = sym; |
252b5132 RH |
3365 | if (!sym_is_global (abfd, sym)) |
3366 | i = num_locals2++; | |
3367 | else | |
3368 | i = num_locals + num_globals2++; | |
3369 | new_syms[i] = sym; | |
3370 | sym->udata.i = i + 1; | |
3371 | } | |
3372 | } | |
3373 | ||
3374 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3375 | ||
3376 | elf_num_locals (abfd) = num_locals; | |
3377 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3378 | return TRUE; |
252b5132 RH |
3379 | } |
3380 | ||
3381 | /* Align to the maximum file alignment that could be required for any | |
3382 | ELF data structure. */ | |
3383 | ||
268b6b39 | 3384 | static inline file_ptr |
217aa764 | 3385 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3386 | { |
3387 | return (off + align - 1) & ~(align - 1); | |
3388 | } | |
3389 | ||
3390 | /* Assign a file position to a section, optionally aligning to the | |
3391 | required section alignment. */ | |
3392 | ||
217aa764 AM |
3393 | file_ptr |
3394 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3395 | file_ptr offset, | |
3396 | bfd_boolean align) | |
252b5132 RH |
3397 | { |
3398 | if (align) | |
3399 | { | |
3400 | unsigned int al; | |
3401 | ||
3402 | al = i_shdrp->sh_addralign; | |
3403 | if (al > 1) | |
3404 | offset = BFD_ALIGN (offset, al); | |
3405 | } | |
3406 | i_shdrp->sh_offset = offset; | |
3407 | if (i_shdrp->bfd_section != NULL) | |
3408 | i_shdrp->bfd_section->filepos = offset; | |
3409 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3410 | offset += i_shdrp->sh_size; | |
3411 | return offset; | |
3412 | } | |
3413 | ||
3414 | /* Compute the file positions we are going to put the sections at, and | |
3415 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3416 | is not NULL, this is being called by the ELF backend linker. */ | |
3417 | ||
b34976b6 | 3418 | bfd_boolean |
217aa764 AM |
3419 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3420 | struct bfd_link_info *link_info) | |
252b5132 | 3421 | { |
9c5bfbb7 | 3422 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3423 | bfd_boolean failed; |
4b6c0f2f | 3424 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3425 | Elf_Internal_Shdr *shstrtab_hdr; |
3426 | ||
3427 | if (abfd->output_has_begun) | |
b34976b6 | 3428 | return TRUE; |
252b5132 RH |
3429 | |
3430 | /* Do any elf backend specific processing first. */ | |
3431 | if (bed->elf_backend_begin_write_processing) | |
3432 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3433 | ||
3434 | if (! prep_headers (abfd)) | |
b34976b6 | 3435 | return FALSE; |
252b5132 | 3436 | |
e6c51ed4 NC |
3437 | /* Post process the headers if necessary. */ |
3438 | if (bed->elf_backend_post_process_headers) | |
3439 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3440 | ||
b34976b6 | 3441 | failed = FALSE; |
252b5132 RH |
3442 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3443 | if (failed) | |
b34976b6 | 3444 | return FALSE; |
252b5132 | 3445 | |
da9f89d4 | 3446 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3447 | return FALSE; |
252b5132 RH |
3448 | |
3449 | /* The backend linker builds symbol table information itself. */ | |
3450 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3451 | { | |
3452 | /* Non-zero if doing a relocatable link. */ | |
3453 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3454 | ||
3455 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3456 | return FALSE; |
252b5132 RH |
3457 | } |
3458 | ||
1126897b | 3459 | if (link_info == NULL) |
dbb410c3 | 3460 | { |
1126897b | 3461 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3462 | if (failed) |
b34976b6 | 3463 | return FALSE; |
dbb410c3 AM |
3464 | } |
3465 | ||
252b5132 RH |
3466 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3467 | /* sh_name was set in prep_headers. */ | |
3468 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3469 | shstrtab_hdr->sh_flags = 0; | |
3470 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3471 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3472 | shstrtab_hdr->sh_entsize = 0; |
3473 | shstrtab_hdr->sh_link = 0; | |
3474 | shstrtab_hdr->sh_info = 0; | |
3475 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3476 | shstrtab_hdr->sh_addralign = 1; | |
3477 | ||
c84fca4d | 3478 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3479 | return FALSE; |
252b5132 RH |
3480 | |
3481 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3482 | { | |
3483 | file_ptr off; | |
3484 | Elf_Internal_Shdr *hdr; | |
3485 | ||
3486 | off = elf_tdata (abfd)->next_file_pos; | |
3487 | ||
3488 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3489 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3490 | |
9ad5cbcf AM |
3491 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3492 | if (hdr->sh_size != 0) | |
b34976b6 | 3493 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3494 | |
252b5132 | 3495 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3496 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3497 | |
3498 | elf_tdata (abfd)->next_file_pos = off; | |
3499 | ||
3500 | /* Now that we know where the .strtab section goes, write it | |
3501 | out. */ | |
3502 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3503 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3504 | return FALSE; |
252b5132 RH |
3505 | _bfd_stringtab_free (strtab); |
3506 | } | |
3507 | ||
b34976b6 | 3508 | abfd->output_has_begun = TRUE; |
252b5132 | 3509 | |
b34976b6 | 3510 | return TRUE; |
252b5132 RH |
3511 | } |
3512 | ||
3513 | /* Create a mapping from a set of sections to a program segment. */ | |
3514 | ||
217aa764 AM |
3515 | static struct elf_segment_map * |
3516 | make_mapping (bfd *abfd, | |
3517 | asection **sections, | |
3518 | unsigned int from, | |
3519 | unsigned int to, | |
3520 | bfd_boolean phdr) | |
252b5132 RH |
3521 | { |
3522 | struct elf_segment_map *m; | |
3523 | unsigned int i; | |
3524 | asection **hdrpp; | |
dc810e39 | 3525 | bfd_size_type amt; |
252b5132 | 3526 | |
dc810e39 AM |
3527 | amt = sizeof (struct elf_segment_map); |
3528 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3529 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3530 | if (m == NULL) |
3531 | return NULL; | |
3532 | m->next = NULL; | |
3533 | m->p_type = PT_LOAD; | |
3534 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3535 | m->sections[i - from] = *hdrpp; | |
3536 | m->count = to - from; | |
3537 | ||
3538 | if (from == 0 && phdr) | |
3539 | { | |
3540 | /* Include the headers in the first PT_LOAD segment. */ | |
3541 | m->includes_filehdr = 1; | |
3542 | m->includes_phdrs = 1; | |
3543 | } | |
3544 | ||
3545 | return m; | |
3546 | } | |
3547 | ||
229fcec5 MM |
3548 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3549 | on failure. */ | |
3550 | ||
3551 | struct elf_segment_map * | |
3552 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3553 | { | |
3554 | struct elf_segment_map *m; | |
3555 | ||
3556 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3557 | if (m == NULL) | |
3558 | return NULL; | |
3559 | m->next = NULL; | |
3560 | m->p_type = PT_DYNAMIC; | |
3561 | m->count = 1; | |
3562 | m->sections[0] = dynsec; | |
3563 | ||
3564 | return m; | |
3565 | } | |
3566 | ||
252b5132 RH |
3567 | /* Set up a mapping from BFD sections to program segments. */ |
3568 | ||
b34976b6 | 3569 | static bfd_boolean |
217aa764 | 3570 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3571 | { |
3572 | asection **sections = NULL; | |
3573 | asection *s; | |
3574 | unsigned int i; | |
3575 | unsigned int count; | |
3576 | struct elf_segment_map *mfirst; | |
3577 | struct elf_segment_map **pm; | |
3578 | struct elf_segment_map *m; | |
3579 | asection *last_hdr; | |
baaff79e | 3580 | bfd_vma last_size; |
252b5132 RH |
3581 | unsigned int phdr_index; |
3582 | bfd_vma maxpagesize; | |
3583 | asection **hdrpp; | |
b34976b6 AM |
3584 | bfd_boolean phdr_in_segment = TRUE; |
3585 | bfd_boolean writable; | |
13ae64f3 JJ |
3586 | int tls_count = 0; |
3587 | asection *first_tls = NULL; | |
65765700 | 3588 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3589 | bfd_size_type amt; |
252b5132 RH |
3590 | |
3591 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3592 | return TRUE; |
252b5132 RH |
3593 | |
3594 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3595 | return TRUE; |
252b5132 RH |
3596 | |
3597 | /* Select the allocated sections, and sort them. */ | |
3598 | ||
dc810e39 | 3599 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
217aa764 | 3600 | sections = bfd_malloc (amt); |
252b5132 RH |
3601 | if (sections == NULL) |
3602 | goto error_return; | |
3603 | ||
3604 | i = 0; | |
3605 | for (s = abfd->sections; s != NULL; s = s->next) | |
3606 | { | |
3607 | if ((s->flags & SEC_ALLOC) != 0) | |
3608 | { | |
3609 | sections[i] = s; | |
3610 | ++i; | |
3611 | } | |
3612 | } | |
3613 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3614 | count = i; | |
3615 | ||
3616 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3617 | ||
3618 | /* Build the mapping. */ | |
3619 | ||
3620 | mfirst = NULL; | |
3621 | pm = &mfirst; | |
3622 | ||
3623 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3624 | the program headers and a PT_INTERP segment for the .interp | |
3625 | section. */ | |
3626 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3627 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3628 | { | |
dc810e39 | 3629 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3630 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3631 | if (m == NULL) |
3632 | goto error_return; | |
3633 | m->next = NULL; | |
3634 | m->p_type = PT_PHDR; | |
3635 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3636 | m->p_flags = PF_R | PF_X; | |
3637 | m->p_flags_valid = 1; | |
3638 | m->includes_phdrs = 1; | |
3639 | ||
3640 | *pm = m; | |
3641 | pm = &m->next; | |
3642 | ||
dc810e39 | 3643 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3644 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3645 | if (m == NULL) |
3646 | goto error_return; | |
3647 | m->next = NULL; | |
3648 | m->p_type = PT_INTERP; | |
3649 | m->count = 1; | |
3650 | m->sections[0] = s; | |
3651 | ||
3652 | *pm = m; | |
3653 | pm = &m->next; | |
3654 | } | |
3655 | ||
3656 | /* Look through the sections. We put sections in the same program | |
3657 | segment when the start of the second section can be placed within | |
3658 | a few bytes of the end of the first section. */ | |
3659 | last_hdr = NULL; | |
baaff79e | 3660 | last_size = 0; |
252b5132 RH |
3661 | phdr_index = 0; |
3662 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3663 | writable = FALSE; |
252b5132 RH |
3664 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3665 | if (dynsec != NULL | |
3666 | && (dynsec->flags & SEC_LOAD) == 0) | |
3667 | dynsec = NULL; | |
3668 | ||
3669 | /* Deal with -Ttext or something similar such that the first section | |
3670 | is not adjacent to the program headers. This is an | |
3671 | approximation, since at this point we don't know exactly how many | |
3672 | program headers we will need. */ | |
3673 | if (count > 0) | |
3674 | { | |
3675 | bfd_size_type phdr_size; | |
3676 | ||
3677 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3678 | if (phdr_size == 0) | |
3679 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3680 | if ((abfd->flags & D_PAGED) == 0 | |
3681 | || sections[0]->lma < phdr_size | |
3682 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3683 | phdr_in_segment = FALSE; |
252b5132 RH |
3684 | } |
3685 | ||
3686 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3687 | { | |
3688 | asection *hdr; | |
b34976b6 | 3689 | bfd_boolean new_segment; |
252b5132 RH |
3690 | |
3691 | hdr = *hdrpp; | |
3692 | ||
3693 | /* See if this section and the last one will fit in the same | |
3694 | segment. */ | |
3695 | ||
3696 | if (last_hdr == NULL) | |
3697 | { | |
3698 | /* If we don't have a segment yet, then we don't need a new | |
3699 | one (we build the last one after this loop). */ | |
b34976b6 | 3700 | new_segment = FALSE; |
252b5132 RH |
3701 | } |
3702 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3703 | { | |
3704 | /* If this section has a different relation between the | |
3705 | virtual address and the load address, then we need a new | |
3706 | segment. */ | |
b34976b6 | 3707 | new_segment = TRUE; |
252b5132 | 3708 | } |
baaff79e | 3709 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3710 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3711 | { | |
3712 | /* If putting this section in this segment would force us to | |
3713 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3714 | new_segment = TRUE; |
252b5132 | 3715 | } |
baaff79e JJ |
3716 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3717 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3718 | { |
3719 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3720 | nonloadable section in the same segment. |
3721 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3722 | new_segment = TRUE; |
252b5132 RH |
3723 | } |
3724 | else if ((abfd->flags & D_PAGED) == 0) | |
3725 | { | |
3726 | /* If the file is not demand paged, which means that we | |
3727 | don't require the sections to be correctly aligned in the | |
3728 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3729 | new_segment = FALSE; |
252b5132 RH |
3730 | } |
3731 | else if (! writable | |
3732 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3733 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3734 | & ~(maxpagesize - 1)) |
3735 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3736 | { |
3737 | /* We don't want to put a writable section in a read only | |
3738 | segment, unless they are on the same page in memory | |
3739 | anyhow. We already know that the last section does not | |
3740 | bring us past the current section on the page, so the | |
3741 | only case in which the new section is not on the same | |
3742 | page as the previous section is when the previous section | |
3743 | ends precisely on a page boundary. */ | |
b34976b6 | 3744 | new_segment = TRUE; |
252b5132 RH |
3745 | } |
3746 | else | |
3747 | { | |
3748 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3749 | new_segment = FALSE; |
252b5132 RH |
3750 | } |
3751 | ||
3752 | if (! new_segment) | |
3753 | { | |
3754 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3755 | writable = TRUE; |
baaff79e JJ |
3756 | last_hdr = hdr; |
3757 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3758 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3759 | last_size = hdr->size; |
baaff79e JJ |
3760 | else |
3761 | last_size = 0; | |
252b5132 RH |
3762 | continue; |
3763 | } | |
3764 | ||
3765 | /* We need a new program segment. We must create a new program | |
3766 | header holding all the sections from phdr_index until hdr. */ | |
3767 | ||
3768 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3769 | if (m == NULL) | |
3770 | goto error_return; | |
3771 | ||
3772 | *pm = m; | |
3773 | pm = &m->next; | |
3774 | ||
3775 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3776 | writable = TRUE; |
252b5132 | 3777 | else |
b34976b6 | 3778 | writable = FALSE; |
252b5132 RH |
3779 | |
3780 | last_hdr = hdr; | |
baaff79e JJ |
3781 | /* .tbss sections effectively have zero size. */ |
3782 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3783 | last_size = hdr->size; |
baaff79e JJ |
3784 | else |
3785 | last_size = 0; | |
252b5132 | 3786 | phdr_index = i; |
b34976b6 | 3787 | phdr_in_segment = FALSE; |
252b5132 RH |
3788 | } |
3789 | ||
3790 | /* Create a final PT_LOAD program segment. */ | |
3791 | if (last_hdr != NULL) | |
3792 | { | |
3793 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3794 | if (m == NULL) | |
3795 | goto error_return; | |
3796 | ||
3797 | *pm = m; | |
3798 | pm = &m->next; | |
3799 | } | |
3800 | ||
3801 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3802 | if (dynsec != NULL) | |
3803 | { | |
229fcec5 | 3804 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3805 | if (m == NULL) |
3806 | goto error_return; | |
252b5132 RH |
3807 | *pm = m; |
3808 | pm = &m->next; | |
3809 | } | |
3810 | ||
3811 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3812 | use bfd_get_section_by_name, because if we link together | |
3813 | nonloadable .note sections and loadable .note sections, we will | |
3814 | generate two .note sections in the output file. FIXME: Using | |
3815 | names for section types is bogus anyhow. */ | |
3816 | for (s = abfd->sections; s != NULL; s = s->next) | |
3817 | { | |
3818 | if ((s->flags & SEC_LOAD) != 0 | |
3819 | && strncmp (s->name, ".note", 5) == 0) | |
3820 | { | |
dc810e39 | 3821 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3822 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3823 | if (m == NULL) |
3824 | goto error_return; | |
3825 | m->next = NULL; | |
3826 | m->p_type = PT_NOTE; | |
3827 | m->count = 1; | |
3828 | m->sections[0] = s; | |
3829 | ||
3830 | *pm = m; | |
3831 | pm = &m->next; | |
3832 | } | |
13ae64f3 JJ |
3833 | if (s->flags & SEC_THREAD_LOCAL) |
3834 | { | |
3835 | if (! tls_count) | |
3836 | first_tls = s; | |
3837 | tls_count++; | |
3838 | } | |
3839 | } | |
3840 | ||
3841 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3842 | if (tls_count > 0) | |
3843 | { | |
3844 | int i; | |
3845 | ||
3846 | amt = sizeof (struct elf_segment_map); | |
3847 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3848 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3849 | if (m == NULL) |
3850 | goto error_return; | |
3851 | m->next = NULL; | |
3852 | m->p_type = PT_TLS; | |
3853 | m->count = tls_count; | |
3854 | /* Mandated PF_R. */ | |
3855 | m->p_flags = PF_R; | |
3856 | m->p_flags_valid = 1; | |
3857 | for (i = 0; i < tls_count; ++i) | |
3858 | { | |
3859 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3860 | m->sections[i] = first_tls; | |
3861 | first_tls = first_tls->next; | |
3862 | } | |
3863 | ||
3864 | *pm = m; | |
3865 | pm = &m->next; | |
252b5132 RH |
3866 | } |
3867 | ||
65765700 JJ |
3868 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3869 | segment. */ | |
126495ed AM |
3870 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3871 | if (eh_frame_hdr != NULL | |
3872 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3873 | { |
3874 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3875 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3876 | if (m == NULL) |
3877 | goto error_return; | |
3878 | m->next = NULL; | |
3879 | m->p_type = PT_GNU_EH_FRAME; | |
3880 | m->count = 1; | |
126495ed | 3881 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3882 | |
3883 | *pm = m; | |
3884 | pm = &m->next; | |
3885 | } | |
3886 | ||
9ee5e499 JJ |
3887 | if (elf_tdata (abfd)->stack_flags) |
3888 | { | |
3889 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3890 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3891 | if (m == NULL) |
3892 | goto error_return; | |
3893 | m->next = NULL; | |
3894 | m->p_type = PT_GNU_STACK; | |
3895 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3896 | m->p_flags_valid = 1; | |
3897 | ||
3898 | *pm = m; | |
3899 | pm = &m->next; | |
3900 | } | |
3901 | ||
8c37241b JJ |
3902 | if (elf_tdata (abfd)->relro) |
3903 | { | |
3904 | amt = sizeof (struct elf_segment_map); | |
3905 | m = bfd_zalloc (abfd, amt); | |
3906 | if (m == NULL) | |
3907 | goto error_return; | |
3908 | m->next = NULL; | |
3909 | m->p_type = PT_GNU_RELRO; | |
3910 | m->p_flags = PF_R; | |
3911 | m->p_flags_valid = 1; | |
3912 | ||
3913 | *pm = m; | |
3914 | pm = &m->next; | |
3915 | } | |
3916 | ||
252b5132 RH |
3917 | free (sections); |
3918 | sections = NULL; | |
3919 | ||
3920 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3921 | return TRUE; |
252b5132 RH |
3922 | |
3923 | error_return: | |
3924 | if (sections != NULL) | |
3925 | free (sections); | |
b34976b6 | 3926 | return FALSE; |
252b5132 RH |
3927 | } |
3928 | ||
3929 | /* Sort sections by address. */ | |
3930 | ||
3931 | static int | |
217aa764 | 3932 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3933 | { |
3934 | const asection *sec1 = *(const asection **) arg1; | |
3935 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3936 | bfd_size_type size1, size2; |
252b5132 RH |
3937 | |
3938 | /* Sort by LMA first, since this is the address used to | |
3939 | place the section into a segment. */ | |
3940 | if (sec1->lma < sec2->lma) | |
3941 | return -1; | |
3942 | else if (sec1->lma > sec2->lma) | |
3943 | return 1; | |
3944 | ||
3945 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3946 | the same, and this will do nothing. */ | |
3947 | if (sec1->vma < sec2->vma) | |
3948 | return -1; | |
3949 | else if (sec1->vma > sec2->vma) | |
3950 | return 1; | |
3951 | ||
3952 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3953 | ||
07c6e936 | 3954 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3955 | |
3956 | if (TOEND (sec1)) | |
3957 | { | |
3958 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3959 | { |
3960 | /* If the indicies are the same, do not return 0 | |
3961 | here, but continue to try the next comparison. */ | |
3962 | if (sec1->target_index - sec2->target_index != 0) | |
3963 | return sec1->target_index - sec2->target_index; | |
3964 | } | |
252b5132 RH |
3965 | else |
3966 | return 1; | |
3967 | } | |
00a7cdc5 | 3968 | else if (TOEND (sec2)) |
252b5132 RH |
3969 | return -1; |
3970 | ||
3971 | #undef TOEND | |
3972 | ||
00a7cdc5 NC |
3973 | /* Sort by size, to put zero sized sections |
3974 | before others at the same address. */ | |
252b5132 | 3975 | |
eea6121a AM |
3976 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3977 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3978 | |
3979 | if (size1 < size2) | |
252b5132 | 3980 | return -1; |
eecdbe52 | 3981 | if (size1 > size2) |
252b5132 RH |
3982 | return 1; |
3983 | ||
3984 | return sec1->target_index - sec2->target_index; | |
3985 | } | |
3986 | ||
340b6d91 AC |
3987 | /* Ian Lance Taylor writes: |
3988 | ||
3989 | We shouldn't be using % with a negative signed number. That's just | |
3990 | not good. We have to make sure either that the number is not | |
3991 | negative, or that the number has an unsigned type. When the types | |
3992 | are all the same size they wind up as unsigned. When file_ptr is a | |
3993 | larger signed type, the arithmetic winds up as signed long long, | |
3994 | which is wrong. | |
3995 | ||
3996 | What we're trying to say here is something like ``increase OFF by | |
3997 | the least amount that will cause it to be equal to the VMA modulo | |
3998 | the page size.'' */ | |
3999 | /* In other words, something like: | |
4000 | ||
4001 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4002 | off_offset = off % bed->maxpagesize; | |
4003 | if (vma_offset < off_offset) | |
4004 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4005 | else | |
4006 | adjustment = vma_offset - off_offset; | |
4007 | ||
4008 | which can can be collapsed into the expression below. */ | |
4009 | ||
4010 | static file_ptr | |
4011 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4012 | { | |
4013 | return ((vma - off) % maxpagesize); | |
4014 | } | |
4015 | ||
252b5132 RH |
4016 | /* Assign file positions to the sections based on the mapping from |
4017 | sections to segments. This function also sets up some fields in | |
4018 | the file header, and writes out the program headers. */ | |
4019 | ||
b34976b6 | 4020 | static bfd_boolean |
c84fca4d | 4021 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
4022 | { |
4023 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4024 | unsigned int count; | |
4025 | struct elf_segment_map *m; | |
4026 | unsigned int alloc; | |
4027 | Elf_Internal_Phdr *phdrs; | |
4028 | file_ptr off, voff; | |
4029 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4030 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4031 | Elf_Internal_Phdr *p; | |
dc810e39 | 4032 | bfd_size_type amt; |
252b5132 RH |
4033 | |
4034 | if (elf_tdata (abfd)->segment_map == NULL) | |
4035 | { | |
4036 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 4037 | return FALSE; |
252b5132 | 4038 | } |
1ed89aa9 NC |
4039 | else |
4040 | { | |
4041 | /* The placement algorithm assumes that non allocated sections are | |
4042 | not in PT_LOAD segments. We ensure this here by removing such | |
4043 | sections from the segment map. */ | |
4044 | for (m = elf_tdata (abfd)->segment_map; | |
4045 | m != NULL; | |
4046 | m = m->next) | |
4047 | { | |
4048 | unsigned int new_count; | |
4049 | unsigned int i; | |
4050 | ||
4051 | if (m->p_type != PT_LOAD) | |
4052 | continue; | |
4053 | ||
4054 | new_count = 0; | |
4055 | for (i = 0; i < m->count; i ++) | |
4056 | { | |
4057 | if ((m->sections[i]->flags & SEC_ALLOC) != 0) | |
4058 | { | |
47d9a591 | 4059 | if (i != new_count) |
1ed89aa9 NC |
4060 | m->sections[new_count] = m->sections[i]; |
4061 | ||
4062 | new_count ++; | |
4063 | } | |
4064 | } | |
4065 | ||
4066 | if (new_count != m->count) | |
4067 | m->count = new_count; | |
4068 | } | |
4069 | } | |
252b5132 RH |
4070 | |
4071 | if (bed->elf_backend_modify_segment_map) | |
4072 | { | |
c84fca4d | 4073 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 4074 | return FALSE; |
252b5132 RH |
4075 | } |
4076 | ||
4077 | count = 0; | |
4078 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4079 | ++count; | |
4080 | ||
4081 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4082 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
4083 | elf_elfheader (abfd)->e_phnum = count; | |
4084 | ||
4085 | if (count == 0) | |
0ebdbb83 BW |
4086 | { |
4087 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
4088 | return TRUE; | |
4089 | } | |
252b5132 RH |
4090 | |
4091 | /* If we already counted the number of program segments, make sure | |
4092 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
4093 | is used in a linker script. */ | |
4094 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
4095 | if (alloc != 0 && count > alloc) | |
4096 | { | |
4097 | ((*_bfd_error_handler) | |
b301b248 AM |
4098 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
4099 | abfd, alloc, count)); | |
252b5132 | 4100 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4101 | return FALSE; |
252b5132 RH |
4102 | } |
4103 | ||
4104 | if (alloc == 0) | |
4105 | alloc = count; | |
4106 | ||
dc810e39 | 4107 | amt = alloc * sizeof (Elf_Internal_Phdr); |
217aa764 | 4108 | phdrs = bfd_alloc (abfd, amt); |
252b5132 | 4109 | if (phdrs == NULL) |
b34976b6 | 4110 | return FALSE; |
252b5132 RH |
4111 | |
4112 | off = bed->s->sizeof_ehdr; | |
4113 | off += alloc * bed->s->sizeof_phdr; | |
4114 | ||
4115 | filehdr_vaddr = 0; | |
4116 | filehdr_paddr = 0; | |
4117 | phdrs_vaddr = 0; | |
4118 | phdrs_paddr = 0; | |
4119 | ||
4120 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4121 | m != NULL; | |
4122 | m = m->next, p++) | |
4123 | { | |
4124 | unsigned int i; | |
4125 | asection **secpp; | |
4126 | ||
4127 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4128 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4129 | not be done to the PT_NOTE section of a corefile, which may |
4130 | contain several pseudo-sections artificially created by bfd. | |
4131 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4132 | if (m->count > 1 |
4133 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4134 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4135 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4136 | elf_sort_sections); | |
4137 | ||
b301b248 AM |
4138 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4139 | number of sections with contents contributing to both p_filesz | |
4140 | and p_memsz, followed by a number of sections with no contents | |
4141 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4142 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4143 | an adjustment we use for segments that have no file contents | |
4144 | but need zero filled memory allocation. */ | |
4145 | voff = 0; | |
252b5132 | 4146 | p->p_type = m->p_type; |
28a7f3e7 | 4147 | p->p_flags = m->p_flags; |
252b5132 RH |
4148 | |
4149 | if (p->p_type == PT_LOAD | |
b301b248 | 4150 | && m->count > 0) |
252b5132 | 4151 | { |
b301b248 AM |
4152 | bfd_size_type align; |
4153 | bfd_vma adjust; | |
a49e53ed | 4154 | unsigned int align_power = 0; |
b301b248 | 4155 | |
a49e53ed | 4156 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
252b5132 | 4157 | { |
a49e53ed | 4158 | unsigned int secalign; |
252b5132 | 4159 | |
a49e53ed AM |
4160 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4161 | if (secalign > align_power) | |
4162 | align_power = secalign; | |
b301b248 | 4163 | } |
a49e53ed AM |
4164 | align = (bfd_size_type) 1 << align_power; |
4165 | ||
4166 | if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > align) | |
4167 | align = bed->maxpagesize; | |
252b5132 | 4168 | |
b301b248 AM |
4169 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4170 | off += adjust; | |
4171 | if (adjust != 0 | |
4172 | && !m->includes_filehdr | |
4173 | && !m->includes_phdrs | |
4174 | && (ufile_ptr) off >= align) | |
4175 | { | |
4176 | /* If the first section isn't loadable, the same holds for | |
4177 | any other sections. Since the segment won't need file | |
4178 | space, we can make p_offset overlap some prior segment. | |
4179 | However, .tbss is special. If a segment starts with | |
4180 | .tbss, we need to look at the next section to decide | |
4181 | whether the segment has any loadable sections. */ | |
4182 | i = 0; | |
5efb6261 | 4183 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4184 | { |
4185 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4186 | || ++i >= m->count) | |
4187 | { | |
4188 | off -= adjust; | |
4189 | voff = adjust - align; | |
4190 | break; | |
4191 | } | |
4192 | } | |
252b5132 RH |
4193 | } |
4194 | } | |
b1a6d0b1 NC |
4195 | /* Make sure the .dynamic section is the first section in the |
4196 | PT_DYNAMIC segment. */ | |
4197 | else if (p->p_type == PT_DYNAMIC | |
4198 | && m->count > 1 | |
4199 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4200 | { | |
4201 | _bfd_error_handler | |
b301b248 AM |
4202 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4203 | abfd); | |
b1a6d0b1 NC |
4204 | bfd_set_error (bfd_error_bad_value); |
4205 | return FALSE; | |
4206 | } | |
252b5132 RH |
4207 | |
4208 | if (m->count == 0) | |
4209 | p->p_vaddr = 0; | |
4210 | else | |
4211 | p->p_vaddr = m->sections[0]->vma; | |
4212 | ||
4213 | if (m->p_paddr_valid) | |
4214 | p->p_paddr = m->p_paddr; | |
4215 | else if (m->count == 0) | |
4216 | p->p_paddr = 0; | |
4217 | else | |
4218 | p->p_paddr = m->sections[0]->lma; | |
4219 | ||
4220 | if (p->p_type == PT_LOAD | |
4221 | && (abfd->flags & D_PAGED) != 0) | |
4222 | p->p_align = bed->maxpagesize; | |
4223 | else if (m->count == 0) | |
45d6a902 | 4224 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4225 | else |
4226 | p->p_align = 0; | |
4227 | ||
4228 | p->p_offset = 0; | |
4229 | p->p_filesz = 0; | |
4230 | p->p_memsz = 0; | |
4231 | ||
4232 | if (m->includes_filehdr) | |
4233 | { | |
4234 | if (! m->p_flags_valid) | |
4235 | p->p_flags |= PF_R; | |
4236 | p->p_offset = 0; | |
4237 | p->p_filesz = bed->s->sizeof_ehdr; | |
4238 | p->p_memsz = bed->s->sizeof_ehdr; | |
4239 | if (m->count > 0) | |
4240 | { | |
4241 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4242 | ||
4243 | if (p->p_vaddr < (bfd_vma) off) | |
4244 | { | |
caf47ea6 | 4245 | (*_bfd_error_handler) |
b301b248 AM |
4246 | (_("%B: Not enough room for program headers, try linking with -N"), |
4247 | abfd); | |
252b5132 | 4248 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4249 | return FALSE; |
252b5132 RH |
4250 | } |
4251 | ||
4252 | p->p_vaddr -= off; | |
4253 | if (! m->p_paddr_valid) | |
4254 | p->p_paddr -= off; | |
4255 | } | |
4256 | if (p->p_type == PT_LOAD) | |
4257 | { | |
4258 | filehdr_vaddr = p->p_vaddr; | |
4259 | filehdr_paddr = p->p_paddr; | |
4260 | } | |
4261 | } | |
4262 | ||
4263 | if (m->includes_phdrs) | |
4264 | { | |
4265 | if (! m->p_flags_valid) | |
4266 | p->p_flags |= PF_R; | |
4267 | ||
4268 | if (m->includes_filehdr) | |
4269 | { | |
4270 | if (p->p_type == PT_LOAD) | |
4271 | { | |
4272 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4273 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4274 | } | |
4275 | } | |
4276 | else | |
4277 | { | |
4278 | p->p_offset = bed->s->sizeof_ehdr; | |
4279 | ||
4280 | if (m->count > 0) | |
4281 | { | |
4282 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4283 | p->p_vaddr -= off - p->p_offset; | |
4284 | if (! m->p_paddr_valid) | |
4285 | p->p_paddr -= off - p->p_offset; | |
4286 | } | |
4287 | ||
4288 | if (p->p_type == PT_LOAD) | |
4289 | { | |
4290 | phdrs_vaddr = p->p_vaddr; | |
4291 | phdrs_paddr = p->p_paddr; | |
4292 | } | |
4293 | else | |
4294 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4295 | } | |
4296 | ||
4297 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4298 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4299 | } | |
4300 | ||
4301 | if (p->p_type == PT_LOAD | |
4302 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4303 | { | |
4304 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4305 | p->p_offset = off + voff; |
252b5132 RH |
4306 | else |
4307 | { | |
4308 | file_ptr adjust; | |
4309 | ||
4310 | adjust = off - (p->p_offset + p->p_filesz); | |
4311 | p->p_filesz += adjust; | |
4312 | p->p_memsz += adjust; | |
4313 | } | |
4314 | } | |
4315 | ||
252b5132 RH |
4316 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4317 | { | |
4318 | asection *sec; | |
4319 | flagword flags; | |
4320 | bfd_size_type align; | |
4321 | ||
4322 | sec = *secpp; | |
4323 | flags = sec->flags; | |
4324 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4325 | ||
b301b248 AM |
4326 | if (p->p_type == PT_LOAD |
4327 | || p->p_type == PT_TLS) | |
252b5132 RH |
4328 | { |
4329 | bfd_signed_vma adjust; | |
4330 | ||
5efb6261 | 4331 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4332 | { |
b301b248 | 4333 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4334 | if (adjust < 0) |
b301b248 AM |
4335 | { |
4336 | (*_bfd_error_handler) | |
4337 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4338 | abfd, sec, (unsigned long) sec->lma); | |
4339 | adjust = 0; | |
4340 | } | |
4341 | off += adjust; | |
4342 | p->p_filesz += adjust; | |
4343 | p->p_memsz += adjust; | |
252b5132 | 4344 | } |
b301b248 AM |
4345 | /* .tbss is special. It doesn't contribute to p_memsz of |
4346 | normal segments. */ | |
4347 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4348 | || p->p_type == PT_TLS) | |
252b5132 RH |
4349 | { |
4350 | /* The section VMA must equal the file position | |
b301b248 AM |
4351 | modulo the page size. */ |
4352 | bfd_size_type page = align; | |
a49e53ed | 4353 | if ((abfd->flags & D_PAGED) != 0 && bed->maxpagesize > page) |
b301b248 AM |
4354 | page = bed->maxpagesize; |
4355 | adjust = vma_page_aligned_bias (sec->vma, | |
4356 | p->p_vaddr + p->p_memsz, | |
4357 | page); | |
252b5132 | 4358 | p->p_memsz += adjust; |
252b5132 | 4359 | } |
252b5132 RH |
4360 | } |
4361 | ||
4362 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4363 | { | |
b301b248 AM |
4364 | /* The section at i == 0 is the one that actually contains |
4365 | everything. */ | |
4a938328 MS |
4366 | if (i == 0) |
4367 | { | |
252b5132 | 4368 | sec->filepos = off; |
eea6121a | 4369 | off += sec->size; |
b301b248 AM |
4370 | p->p_filesz = sec->size; |
4371 | p->p_memsz = 0; | |
4372 | p->p_align = 1; | |
252b5132 | 4373 | } |
4a938328 | 4374 | else |
252b5132 | 4375 | { |
b301b248 | 4376 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4377 | sec->filepos = 0; |
eea6121a | 4378 | sec->size = 0; |
b301b248 AM |
4379 | sec->flags = 0; |
4380 | continue; | |
252b5132 | 4381 | } |
252b5132 RH |
4382 | } |
4383 | else | |
4384 | { | |
b301b248 AM |
4385 | if (p->p_type == PT_LOAD) |
4386 | { | |
4387 | sec->filepos = off; | |
5efb6261 AM |
4388 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4389 | 1997, and the exact reason for it isn't clear. One | |
4390 | plausible explanation is that it is to work around | |
4391 | a problem we have with linker scripts using data | |
4392 | statements in NOLOAD sections. I don't think it | |
4393 | makes a great deal of sense to have such a section | |
4394 | assigned to a PT_LOAD segment, but apparently | |
4395 | people do this. The data statement results in a | |
4396 | bfd_data_link_order being built, and these need | |
4397 | section contents to write into. Eventually, we get | |
4398 | to _bfd_elf_write_object_contents which writes any | |
4399 | section with contents to the output. Make room | |
4400 | here for the write, so that following segments are | |
4401 | not trashed. */ | |
4402 | if ((flags & SEC_LOAD) != 0 | |
4403 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4404 | off += sec->size; |
4405 | } | |
252b5132 | 4406 | |
5efb6261 | 4407 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4408 | { |
4409 | p->p_filesz += sec->size; | |
4410 | p->p_memsz += sec->size; | |
4411 | } | |
4b6c0f2f NC |
4412 | /* PR ld/594: Sections in note segments which are not loaded |
4413 | contribute to the file size but not the in-memory size. */ | |
4414 | else if (p->p_type == PT_NOTE | |
4415 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4416 | p->p_filesz += sec->size; | |
4417 | ||
b301b248 AM |
4418 | /* .tbss is special. It doesn't contribute to p_memsz of |
4419 | normal segments. */ | |
4420 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4421 | || p->p_type == PT_TLS) | |
4422 | p->p_memsz += sec->size; | |
252b5132 | 4423 | |
13ae64f3 | 4424 | if (p->p_type == PT_TLS |
eea6121a | 4425 | && sec->size == 0 |
13ae64f3 JJ |
4426 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4427 | { | |
4428 | struct bfd_link_order *o; | |
4429 | bfd_vma tbss_size = 0; | |
4430 | ||
8423293d | 4431 | for (o = sec->map_head.link_order; o != NULL; o = o->next) |
13ae64f3 JJ |
4432 | if (tbss_size < o->offset + o->size) |
4433 | tbss_size = o->offset + o->size; | |
4434 | ||
4435 | p->p_memsz += tbss_size; | |
4436 | } | |
4437 | ||
252b5132 RH |
4438 | if (align > p->p_align |
4439 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4440 | p->p_align = align; | |
4441 | } | |
4442 | ||
4443 | if (! m->p_flags_valid) | |
4444 | { | |
4445 | p->p_flags |= PF_R; | |
4446 | if ((flags & SEC_CODE) != 0) | |
4447 | p->p_flags |= PF_X; | |
4448 | if ((flags & SEC_READONLY) == 0) | |
4449 | p->p_flags |= PF_W; | |
4450 | } | |
4451 | } | |
4452 | } | |
4453 | ||
4454 | /* Now that we have set the section file positions, we can set up | |
4455 | the file positions for the non PT_LOAD segments. */ | |
4456 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4457 | m != NULL; | |
4458 | m = m->next, p++) | |
4459 | { | |
4460 | if (p->p_type != PT_LOAD && m->count > 0) | |
4461 | { | |
4462 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4463 | /* If the section has not yet been assigned a file position, |
4464 | do so now. The ARM BPABI requires that .dynamic section | |
4465 | not be marked SEC_ALLOC because it is not part of any | |
4466 | PT_LOAD segment, so it will not be processed above. */ | |
4467 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4468 | { | |
4469 | unsigned int i; | |
4470 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4471 | ||
4472 | i = 1; | |
4473 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4474 | ++i; | |
4475 | off = (_bfd_elf_assign_file_position_for_section | |
4476 | (i_shdrpp[i], off, TRUE)); | |
4477 | p->p_filesz = m->sections[0]->size; | |
4478 | } | |
252b5132 RH |
4479 | p->p_offset = m->sections[0]->filepos; |
4480 | } | |
4481 | if (m->count == 0) | |
4482 | { | |
4483 | if (m->includes_filehdr) | |
4484 | { | |
4485 | p->p_vaddr = filehdr_vaddr; | |
4486 | if (! m->p_paddr_valid) | |
4487 | p->p_paddr = filehdr_paddr; | |
4488 | } | |
4489 | else if (m->includes_phdrs) | |
4490 | { | |
4491 | p->p_vaddr = phdrs_vaddr; | |
4492 | if (! m->p_paddr_valid) | |
4493 | p->p_paddr = phdrs_paddr; | |
4494 | } | |
8c37241b JJ |
4495 | else if (p->p_type == PT_GNU_RELRO) |
4496 | { | |
4497 | Elf_Internal_Phdr *lp; | |
4498 | ||
4499 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4500 | { | |
4501 | if (lp->p_type == PT_LOAD | |
4502 | && lp->p_vaddr <= link_info->relro_end | |
4503 | && lp->p_vaddr >= link_info->relro_start | |
4504 | && lp->p_vaddr + lp->p_filesz | |
4505 | >= link_info->relro_end) | |
4506 | break; | |
4507 | } | |
4508 | ||
4509 | if (lp < phdrs + count | |
4510 | && link_info->relro_end > lp->p_vaddr) | |
4511 | { | |
4512 | p->p_vaddr = lp->p_vaddr; | |
4513 | p->p_paddr = lp->p_paddr; | |
4514 | p->p_offset = lp->p_offset; | |
4515 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4516 | p->p_memsz = p->p_filesz; | |
4517 | p->p_align = 1; | |
4518 | p->p_flags = (lp->p_flags & ~PF_W); | |
4519 | } | |
4520 | else | |
4521 | { | |
4522 | memset (p, 0, sizeof *p); | |
4523 | p->p_type = PT_NULL; | |
4524 | } | |
4525 | } | |
252b5132 RH |
4526 | } |
4527 | } | |
4528 | ||
4529 | /* Clear out any program headers we allocated but did not use. */ | |
4530 | for (; count < alloc; count++, p++) | |
4531 | { | |
4532 | memset (p, 0, sizeof *p); | |
4533 | p->p_type = PT_NULL; | |
4534 | } | |
4535 | ||
4536 | elf_tdata (abfd)->phdr = phdrs; | |
4537 | ||
4538 | elf_tdata (abfd)->next_file_pos = off; | |
4539 | ||
4540 | /* Write out the program headers. */ | |
dc810e39 | 4541 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4542 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4543 | return FALSE; |
252b5132 | 4544 | |
b34976b6 | 4545 | return TRUE; |
252b5132 RH |
4546 | } |
4547 | ||
4548 | /* Get the size of the program header. | |
4549 | ||
4550 | If this is called by the linker before any of the section VMA's are set, it | |
4551 | can't calculate the correct value for a strange memory layout. This only | |
4552 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4553 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4554 | data segment (exclusive of .interp and .dynamic). | |
4555 | ||
4556 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4557 | will be two segments. */ | |
4558 | ||
4559 | static bfd_size_type | |
217aa764 | 4560 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4561 | { |
4562 | size_t segs; | |
4563 | asection *s; | |
9c5bfbb7 | 4564 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4565 | |
4566 | /* We can't return a different result each time we're called. */ | |
4567 | if (elf_tdata (abfd)->program_header_size != 0) | |
4568 | return elf_tdata (abfd)->program_header_size; | |
4569 | ||
4570 | if (elf_tdata (abfd)->segment_map != NULL) | |
4571 | { | |
4572 | struct elf_segment_map *m; | |
4573 | ||
4574 | segs = 0; | |
4575 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4576 | ++segs; | |
4577 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4578 | return elf_tdata (abfd)->program_header_size; | |
4579 | } | |
4580 | ||
4581 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4582 | and one for data. */ | |
4583 | segs = 2; | |
4584 | ||
4585 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4586 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4587 | { | |
4588 | /* If we have a loadable interpreter section, we need a | |
4589 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4590 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4591 | targets. */ |
4592 | segs += 2; | |
4593 | } | |
4594 | ||
4595 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4596 | { | |
4597 | /* We need a PT_DYNAMIC segment. */ | |
4598 | ++segs; | |
4599 | } | |
4600 | ||
126495ed | 4601 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4602 | { |
4603 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4604 | ++segs; | |
4605 | } | |
4606 | ||
9ee5e499 JJ |
4607 | if (elf_tdata (abfd)->stack_flags) |
4608 | { | |
4609 | /* We need a PT_GNU_STACK segment. */ | |
4610 | ++segs; | |
4611 | } | |
4612 | ||
8c37241b JJ |
4613 | if (elf_tdata (abfd)->relro) |
4614 | { | |
4615 | /* We need a PT_GNU_RELRO segment. */ | |
4616 | ++segs; | |
4617 | } | |
4618 | ||
252b5132 RH |
4619 | for (s = abfd->sections; s != NULL; s = s->next) |
4620 | { | |
4621 | if ((s->flags & SEC_LOAD) != 0 | |
4622 | && strncmp (s->name, ".note", 5) == 0) | |
4623 | { | |
4624 | /* We need a PT_NOTE segment. */ | |
4625 | ++segs; | |
4626 | } | |
4627 | } | |
4628 | ||
13ae64f3 JJ |
4629 | for (s = abfd->sections; s != NULL; s = s->next) |
4630 | { | |
4631 | if (s->flags & SEC_THREAD_LOCAL) | |
4632 | { | |
4633 | /* We need a PT_TLS segment. */ | |
4634 | ++segs; | |
4635 | break; | |
4636 | } | |
4637 | } | |
4638 | ||
252b5132 RH |
4639 | /* Let the backend count up any program headers it might need. */ |
4640 | if (bed->elf_backend_additional_program_headers) | |
4641 | { | |
4642 | int a; | |
4643 | ||
4644 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4645 | if (a == -1) | |
4646 | abort (); | |
4647 | segs += a; | |
4648 | } | |
4649 | ||
4650 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4651 | return elf_tdata (abfd)->program_header_size; | |
4652 | } | |
4653 | ||
4654 | /* Work out the file positions of all the sections. This is called by | |
4655 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4656 | VMAs must be known before this is called. | |
4657 | ||
e0638f70 AM |
4658 | Reloc sections come in two flavours: Those processed specially as |
4659 | "side-channel" data attached to a section to which they apply, and | |
4660 | those that bfd doesn't process as relocations. The latter sort are | |
4661 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4662 | consider the former sort here, unless they form part of the loadable | |
4663 | image. Reloc sections not assigned here will be handled later by | |
4664 | assign_file_positions_for_relocs. | |
252b5132 RH |
4665 | |
4666 | We also don't set the positions of the .symtab and .strtab here. */ | |
4667 | ||
b34976b6 | 4668 | static bfd_boolean |
c84fca4d AO |
4669 | assign_file_positions_except_relocs (bfd *abfd, |
4670 | struct bfd_link_info *link_info) | |
252b5132 RH |
4671 | { |
4672 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4673 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4674 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4675 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4676 | file_ptr off; |
9c5bfbb7 | 4677 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4678 | |
4679 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4680 | && bfd_get_format (abfd) != bfd_core) | |
4681 | { | |
4682 | Elf_Internal_Shdr **hdrpp; | |
4683 | unsigned int i; | |
4684 | ||
4685 | /* Start after the ELF header. */ | |
4686 | off = i_ehdrp->e_ehsize; | |
4687 | ||
4688 | /* We are not creating an executable, which means that we are | |
4689 | not creating a program header, and that the actual order of | |
4690 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4691 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4692 | { |
4693 | Elf_Internal_Shdr *hdr; | |
4694 | ||
4695 | hdr = *hdrpp; | |
e0638f70 AM |
4696 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4697 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4698 | || i == tdata->symtab_section |
4699 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4700 | || i == tdata->strtab_section) |
4701 | { | |
4702 | hdr->sh_offset = -1; | |
252b5132 | 4703 | } |
9ad5cbcf | 4704 | else |
b34976b6 | 4705 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4706 | |
9ad5cbcf AM |
4707 | if (i == SHN_LORESERVE - 1) |
4708 | { | |
4709 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4710 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4711 | } | |
252b5132 RH |
4712 | } |
4713 | } | |
4714 | else | |
4715 | { | |
4716 | unsigned int i; | |
4717 | Elf_Internal_Shdr **hdrpp; | |
4718 | ||
4719 | /* Assign file positions for the loaded sections based on the | |
4720 | assignment of sections to segments. */ | |
c84fca4d | 4721 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4722 | return FALSE; |
252b5132 RH |
4723 | |
4724 | /* Assign file positions for the other sections. */ | |
4725 | ||
4726 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4727 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4728 | { |
4729 | Elf_Internal_Shdr *hdr; | |
4730 | ||
4731 | hdr = *hdrpp; | |
4732 | if (hdr->bfd_section != NULL | |
4733 | && hdr->bfd_section->filepos != 0) | |
4734 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4735 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4736 | { | |
4737 | ((*_bfd_error_handler) | |
b301b248 AM |
4738 | (_("%B: warning: allocated section `%s' not in segment"), |
4739 | abfd, | |
252b5132 RH |
4740 | (hdr->bfd_section == NULL |
4741 | ? "*unknown*" | |
4742 | : hdr->bfd_section->name))); | |
4743 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4744 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4745 | bed->maxpagesize); | |
252b5132 | 4746 | else |
340b6d91 AC |
4747 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4748 | hdr->sh_addralign); | |
252b5132 | 4749 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4750 | FALSE); |
252b5132 | 4751 | } |
e0638f70 AM |
4752 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4753 | && hdr->bfd_section == NULL) | |
252b5132 | 4754 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4755 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4756 | || hdr == i_shdrpp[tdata->strtab_section]) |
4757 | hdr->sh_offset = -1; | |
4758 | else | |
b34976b6 | 4759 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4760 | |
4761 | if (i == SHN_LORESERVE - 1) | |
4762 | { | |
4763 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4764 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4765 | } | |
252b5132 RH |
4766 | } |
4767 | } | |
4768 | ||
4769 | /* Place the section headers. */ | |
45d6a902 | 4770 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4771 | i_ehdrp->e_shoff = off; |
4772 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4773 | ||
4774 | elf_tdata (abfd)->next_file_pos = off; | |
4775 | ||
b34976b6 | 4776 | return TRUE; |
252b5132 RH |
4777 | } |
4778 | ||
b34976b6 | 4779 | static bfd_boolean |
217aa764 | 4780 | prep_headers (bfd *abfd) |
252b5132 RH |
4781 | { |
4782 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4783 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4784 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4785 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4786 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4787 | |
4788 | i_ehdrp = elf_elfheader (abfd); | |
4789 | i_shdrp = elf_elfsections (abfd); | |
4790 | ||
2b0f7ef9 | 4791 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4792 | if (shstrtab == NULL) |
b34976b6 | 4793 | return FALSE; |
252b5132 RH |
4794 | |
4795 | elf_shstrtab (abfd) = shstrtab; | |
4796 | ||
4797 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4798 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4799 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4800 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4801 | ||
4802 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4803 | i_ehdrp->e_ident[EI_DATA] = | |
4804 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4805 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4806 | ||
252b5132 RH |
4807 | if ((abfd->flags & DYNAMIC) != 0) |
4808 | i_ehdrp->e_type = ET_DYN; | |
4809 | else if ((abfd->flags & EXEC_P) != 0) | |
4810 | i_ehdrp->e_type = ET_EXEC; | |
4811 | else if (bfd_get_format (abfd) == bfd_core) | |
4812 | i_ehdrp->e_type = ET_CORE; | |
4813 | else | |
4814 | i_ehdrp->e_type = ET_REL; | |
4815 | ||
4816 | switch (bfd_get_arch (abfd)) | |
4817 | { | |
4818 | case bfd_arch_unknown: | |
4819 | i_ehdrp->e_machine = EM_NONE; | |
4820 | break; | |
aa4f99bb AO |
4821 | |
4822 | /* There used to be a long list of cases here, each one setting | |
4823 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4824 | in the corresponding bfd definition. To avoid duplication, | |
4825 | the switch was removed. Machines that need special handling | |
4826 | can generally do it in elf_backend_final_write_processing(), | |
4827 | unless they need the information earlier than the final write. | |
4828 | Such need can generally be supplied by replacing the tests for | |
4829 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4830 | default: |
9c5bfbb7 AM |
4831 | i_ehdrp->e_machine = bed->elf_machine_code; |
4832 | } | |
aa4f99bb | 4833 | |
252b5132 RH |
4834 | i_ehdrp->e_version = bed->s->ev_current; |
4835 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4836 | ||
c044fabd | 4837 | /* No program header, for now. */ |
252b5132 RH |
4838 | i_ehdrp->e_phoff = 0; |
4839 | i_ehdrp->e_phentsize = 0; | |
4840 | i_ehdrp->e_phnum = 0; | |
4841 | ||
c044fabd | 4842 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4843 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4844 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4845 | ||
c044fabd | 4846 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4847 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4848 | /* It all happens later. */ |
4849 | ; | |
252b5132 RH |
4850 | else |
4851 | { | |
4852 | i_ehdrp->e_phentsize = 0; | |
4853 | i_phdrp = 0; | |
4854 | i_ehdrp->e_phoff = 0; | |
4855 | } | |
4856 | ||
4857 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4858 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4859 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4860 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4861 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4862 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4863 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4864 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4865 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4866 | return FALSE; |
252b5132 | 4867 | |
b34976b6 | 4868 | return TRUE; |
252b5132 RH |
4869 | } |
4870 | ||
4871 | /* Assign file positions for all the reloc sections which are not part | |
4872 | of the loadable file image. */ | |
4873 | ||
4874 | void | |
217aa764 | 4875 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4876 | { |
4877 | file_ptr off; | |
9ad5cbcf | 4878 | unsigned int i, num_sec; |
252b5132 RH |
4879 | Elf_Internal_Shdr **shdrpp; |
4880 | ||
4881 | off = elf_tdata (abfd)->next_file_pos; | |
4882 | ||
9ad5cbcf AM |
4883 | num_sec = elf_numsections (abfd); |
4884 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4885 | { |
4886 | Elf_Internal_Shdr *shdrp; | |
4887 | ||
4888 | shdrp = *shdrpp; | |
4889 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4890 | && shdrp->sh_offset == -1) | |
b34976b6 | 4891 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4892 | } |
4893 | ||
4894 | elf_tdata (abfd)->next_file_pos = off; | |
4895 | } | |
4896 | ||
b34976b6 | 4897 | bfd_boolean |
217aa764 | 4898 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4899 | { |
9c5bfbb7 | 4900 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4901 | Elf_Internal_Ehdr *i_ehdrp; |
4902 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4903 | bfd_boolean failed; |
9ad5cbcf | 4904 | unsigned int count, num_sec; |
252b5132 RH |
4905 | |
4906 | if (! abfd->output_has_begun | |
217aa764 | 4907 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4908 | return FALSE; |
252b5132 RH |
4909 | |
4910 | i_shdrp = elf_elfsections (abfd); | |
4911 | i_ehdrp = elf_elfheader (abfd); | |
4912 | ||
b34976b6 | 4913 | failed = FALSE; |
252b5132 RH |
4914 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4915 | if (failed) | |
b34976b6 | 4916 | return FALSE; |
252b5132 RH |
4917 | |
4918 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4919 | ||
c044fabd | 4920 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4921 | num_sec = elf_numsections (abfd); |
4922 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4923 | { |
4924 | if (bed->elf_backend_section_processing) | |
4925 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4926 | if (i_shdrp[count]->contents) | |
4927 | { | |
dc810e39 AM |
4928 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4929 | ||
252b5132 | 4930 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4931 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4932 | return FALSE; |
252b5132 | 4933 | } |
9ad5cbcf AM |
4934 | if (count == SHN_LORESERVE - 1) |
4935 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4936 | } |
4937 | ||
4938 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4939 | if (elf_shstrtab (abfd) != NULL |
4940 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
4941 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 4942 | return FALSE; |
252b5132 RH |
4943 | |
4944 | if (bed->elf_backend_final_write_processing) | |
4945 | (*bed->elf_backend_final_write_processing) (abfd, | |
4946 | elf_tdata (abfd)->linker); | |
4947 | ||
4948 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4949 | } | |
4950 | ||
b34976b6 | 4951 | bfd_boolean |
217aa764 | 4952 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4953 | { |
c044fabd | 4954 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4955 | return _bfd_elf_write_object_contents (abfd); |
4956 | } | |
c044fabd KH |
4957 | |
4958 | /* Given a section, search the header to find them. */ | |
4959 | ||
252b5132 | 4960 | int |
198beae2 | 4961 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4962 | { |
9c5bfbb7 | 4963 | const struct elf_backend_data *bed; |
252b5132 | 4964 | int index; |
252b5132 | 4965 | |
9ad5cbcf AM |
4966 | if (elf_section_data (asect) != NULL |
4967 | && elf_section_data (asect)->this_idx != 0) | |
4968 | return elf_section_data (asect)->this_idx; | |
4969 | ||
4970 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4971 | index = SHN_ABS; |
4972 | else if (bfd_is_com_section (asect)) | |
4973 | index = SHN_COMMON; | |
4974 | else if (bfd_is_und_section (asect)) | |
4975 | index = SHN_UNDEF; | |
4976 | else | |
6dc132d9 | 4977 | index = -1; |
252b5132 | 4978 | |
af746e92 | 4979 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4980 | if (bed->elf_backend_section_from_bfd_section) |
4981 | { | |
af746e92 | 4982 | int retval = index; |
9ad5cbcf | 4983 | |
af746e92 AM |
4984 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4985 | return retval; | |
252b5132 RH |
4986 | } |
4987 | ||
af746e92 AM |
4988 | if (index == -1) |
4989 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4990 | |
af746e92 | 4991 | return index; |
252b5132 RH |
4992 | } |
4993 | ||
4994 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4995 | on error. */ | |
4996 | ||
4997 | int | |
217aa764 | 4998 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4999 | { |
5000 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5001 | int idx; | |
5002 | flagword flags = asym_ptr->flags; | |
5003 | ||
5004 | /* When gas creates relocations against local labels, it creates its | |
5005 | own symbol for the section, but does put the symbol into the | |
5006 | symbol chain, so udata is 0. When the linker is generating | |
5007 | relocatable output, this section symbol may be for one of the | |
5008 | input sections rather than the output section. */ | |
5009 | if (asym_ptr->udata.i == 0 | |
5010 | && (flags & BSF_SECTION_SYM) | |
5011 | && asym_ptr->section) | |
5012 | { | |
5013 | int indx; | |
5014 | ||
5015 | if (asym_ptr->section->output_section != NULL) | |
5016 | indx = asym_ptr->section->output_section->index; | |
5017 | else | |
5018 | indx = asym_ptr->section->index; | |
4e89ac30 L |
5019 | if (indx < elf_num_section_syms (abfd) |
5020 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
5021 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5022 | } | |
5023 | ||
5024 | idx = asym_ptr->udata.i; | |
5025 | ||
5026 | if (idx == 0) | |
5027 | { | |
5028 | /* This case can occur when using --strip-symbol on a symbol | |
5029 | which is used in a relocation entry. */ | |
5030 | (*_bfd_error_handler) | |
d003868e AM |
5031 | (_("%B: symbol `%s' required but not present"), |
5032 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5033 | bfd_set_error (bfd_error_no_symbols); |
5034 | return -1; | |
5035 | } | |
5036 | ||
5037 | #if DEBUG & 4 | |
5038 | { | |
5039 | fprintf (stderr, | |
661a3fd4 | 5040 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5041 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5042 | elf_symbol_flags (flags)); | |
5043 | fflush (stderr); | |
5044 | } | |
5045 | #endif | |
5046 | ||
5047 | return idx; | |
5048 | } | |
5049 | ||
5050 | /* Copy private BFD data. This copies any program header information. */ | |
5051 | ||
b34976b6 | 5052 | static bfd_boolean |
217aa764 | 5053 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 5054 | { |
b34976b6 AM |
5055 | Elf_Internal_Ehdr *iehdr; |
5056 | struct elf_segment_map *map; | |
5057 | struct elf_segment_map *map_first; | |
5058 | struct elf_segment_map **pointer_to_map; | |
5059 | Elf_Internal_Phdr *segment; | |
5060 | asection *section; | |
5061 | unsigned int i; | |
5062 | unsigned int num_segments; | |
5063 | bfd_boolean phdr_included = FALSE; | |
5064 | bfd_vma maxpagesize; | |
5065 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5066 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5067 | const struct elf_backend_data *bed; |
bc67d8a6 | 5068 | |
c044fabd | 5069 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 5070 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 5071 | return TRUE; |
252b5132 RH |
5072 | |
5073 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 5074 | return TRUE; |
252b5132 | 5075 | |
caf47ea6 | 5076 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5077 | iehdr = elf_elfheader (ibfd); |
5078 | ||
bc67d8a6 | 5079 | map_first = NULL; |
c044fabd | 5080 | pointer_to_map = &map_first; |
252b5132 RH |
5081 | |
5082 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5083 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5084 | ||
5085 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5086 | #define SEGMENT_END(segment, start) \ |
5087 | (start + (segment->p_memsz > segment->p_filesz \ | |
5088 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5089 | |
eecdbe52 JJ |
5090 | #define SECTION_SIZE(section, segment) \ |
5091 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5092 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5093 | ? section->size : 0) |
eecdbe52 | 5094 | |
b34976b6 | 5095 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5096 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5097 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5098 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5099 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5100 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5101 | |
b34976b6 | 5102 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5103 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5104 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5105 | (section->lma >= base \ | |
eecdbe52 | 5106 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5107 | <= SEGMENT_END (segment, base))) |
252b5132 | 5108 | |
c044fabd | 5109 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5110 | #define IS_COREFILE_NOTE(p, s) \ |
5111 | (p->p_type == PT_NOTE \ | |
5112 | && bfd_get_format (ibfd) == bfd_core \ | |
5113 | && s->vma == 0 && s->lma == 0 \ | |
5114 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5115 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5116 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5117 | |
5118 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5119 | linker, which generates a PT_INTERP section with p_vaddr and | |
5120 | p_memsz set to 0. */ | |
aecc8f8a AM |
5121 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5122 | (p->p_vaddr == 0 \ | |
5123 | && p->p_paddr == 0 \ | |
5124 | && p->p_memsz == 0 \ | |
5125 | && p->p_filesz > 0 \ | |
5126 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5127 | && s->size > 0 \ |
aecc8f8a | 5128 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5129 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5130 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5131 | |
bc67d8a6 NC |
5132 | /* Decide if the given section should be included in the given segment. |
5133 | A section will be included if: | |
f5ffc919 NC |
5134 | 1. It is within the address space of the segment -- we use the LMA |
5135 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5136 | 2. It is an allocated segment, |
5137 | 3. There is an output section associated with it, | |
eecdbe52 | 5138 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5139 | 5. PT_GNU_STACK segments do not include any sections. |
5140 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5141 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5142 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5143 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5144 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5145 | ((((segment->p_paddr \ |
5146 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5147 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5148 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5149 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5150 | && section->output_section != NULL \ |
03394ac9 | 5151 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5152 | && (segment->p_type != PT_TLS \ |
5153 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5154 | && (segment->p_type == PT_LOAD \ | |
5155 | || segment->p_type == PT_TLS \ | |
5156 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5157 | && (segment->p_type != PT_DYNAMIC \ |
5158 | || SECTION_SIZE (section, segment) > 0 \ | |
5159 | || (segment->p_paddr \ | |
5160 | ? segment->p_paddr != section->lma \ | |
5161 | : segment->p_vaddr != section->vma) \ | |
5162 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5163 | == 0)) \ | |
82e51918 | 5164 | && ! section->segment_mark) |
bc67d8a6 | 5165 | |
b34976b6 | 5166 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5167 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5168 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5169 | ||
5170 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5171 | their VMA address ranges and their LMA address ranges overlap. | |
5172 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5173 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5174 | to the same VMA range, but with the .data section mapped to a different | |
5175 | LMA. */ | |
aecc8f8a | 5176 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5177 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5178 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5179 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5180 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5181 | |
5182 | /* Initialise the segment mark field. */ | |
5183 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5184 | section->segment_mark = FALSE; |
bc67d8a6 | 5185 | |
252b5132 | 5186 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5187 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5188 | in the loadable segments. These can be created by weird |
aecc8f8a | 5189 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5190 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5191 | i < num_segments; | |
c044fabd | 5192 | i++, segment++) |
252b5132 | 5193 | { |
252b5132 | 5194 | unsigned int j; |
c044fabd | 5195 | Elf_Internal_Phdr *segment2; |
252b5132 | 5196 | |
aecc8f8a AM |
5197 | if (segment->p_type == PT_INTERP) |
5198 | for (section = ibfd->sections; section; section = section->next) | |
5199 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5200 | { | |
5201 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5202 | assignment code will work. */ |
aecc8f8a AM |
5203 | segment->p_vaddr = section->vma; |
5204 | break; | |
5205 | } | |
5206 | ||
bc67d8a6 NC |
5207 | if (segment->p_type != PT_LOAD) |
5208 | continue; | |
c044fabd | 5209 | |
bc67d8a6 | 5210 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5211 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5212 | { |
5213 | bfd_signed_vma extra_length; | |
c044fabd | 5214 | |
bc67d8a6 NC |
5215 | if (segment2->p_type != PT_LOAD |
5216 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5217 | continue; | |
c044fabd | 5218 | |
bc67d8a6 NC |
5219 | /* Merge the two segments together. */ |
5220 | if (segment2->p_vaddr < segment->p_vaddr) | |
5221 | { | |
c044fabd KH |
5222 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5223 | SEGMENT. */ | |
bc67d8a6 NC |
5224 | extra_length = |
5225 | SEGMENT_END (segment, segment->p_vaddr) | |
5226 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5227 | |
bc67d8a6 NC |
5228 | if (extra_length > 0) |
5229 | { | |
5230 | segment2->p_memsz += extra_length; | |
5231 | segment2->p_filesz += extra_length; | |
5232 | } | |
c044fabd | 5233 | |
bc67d8a6 | 5234 | segment->p_type = PT_NULL; |
c044fabd | 5235 | |
bc67d8a6 NC |
5236 | /* Since we have deleted P we must restart the outer loop. */ |
5237 | i = 0; | |
5238 | segment = elf_tdata (ibfd)->phdr; | |
5239 | break; | |
5240 | } | |
5241 | else | |
5242 | { | |
c044fabd KH |
5243 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5244 | SEGMENT2. */ | |
bc67d8a6 NC |
5245 | extra_length = |
5246 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5247 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5248 | |
bc67d8a6 NC |
5249 | if (extra_length > 0) |
5250 | { | |
5251 | segment->p_memsz += extra_length; | |
5252 | segment->p_filesz += extra_length; | |
5253 | } | |
c044fabd | 5254 | |
bc67d8a6 NC |
5255 | segment2->p_type = PT_NULL; |
5256 | } | |
5257 | } | |
5258 | } | |
c044fabd | 5259 | |
bc67d8a6 NC |
5260 | /* The second scan attempts to assign sections to segments. */ |
5261 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5262 | i < num_segments; | |
5263 | i ++, segment ++) | |
5264 | { | |
5265 | unsigned int section_count; | |
5266 | asection ** sections; | |
5267 | asection * output_section; | |
5268 | unsigned int isec; | |
5269 | bfd_vma matching_lma; | |
5270 | bfd_vma suggested_lma; | |
5271 | unsigned int j; | |
dc810e39 | 5272 | bfd_size_type amt; |
bc67d8a6 NC |
5273 | |
5274 | if (segment->p_type == PT_NULL) | |
5275 | continue; | |
c044fabd | 5276 | |
bc67d8a6 | 5277 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5278 | for (section = ibfd->sections, section_count = 0; |
5279 | section != NULL; | |
5280 | section = section->next) | |
caf47ea6 | 5281 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5282 | ++section_count; |
811072d8 | 5283 | |
b5f852ea NC |
5284 | /* Allocate a segment map big enough to contain |
5285 | all of the sections we have selected. */ | |
dc810e39 AM |
5286 | amt = sizeof (struct elf_segment_map); |
5287 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5288 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5289 | if (map == NULL) |
b34976b6 | 5290 | return FALSE; |
252b5132 RH |
5291 | |
5292 | /* Initialise the fields of the segment map. Default to | |
5293 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5294 | map->next = NULL; |
5295 | map->p_type = segment->p_type; | |
5296 | map->p_flags = segment->p_flags; | |
5297 | map->p_flags_valid = 1; | |
5298 | map->p_paddr = segment->p_paddr; | |
5299 | map->p_paddr_valid = 1; | |
252b5132 RH |
5300 | |
5301 | /* Determine if this segment contains the ELF file header | |
5302 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5303 | map->includes_filehdr = (segment->p_offset == 0 |
5304 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5305 | |
bc67d8a6 | 5306 | map->includes_phdrs = 0; |
252b5132 | 5307 | |
bc67d8a6 | 5308 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5309 | { |
bc67d8a6 NC |
5310 | map->includes_phdrs = |
5311 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5312 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5313 | >= ((bfd_vma) iehdr->e_phoff |
5314 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5315 | |
bc67d8a6 | 5316 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5317 | phdr_included = TRUE; |
252b5132 RH |
5318 | } |
5319 | ||
bc67d8a6 | 5320 | if (section_count == 0) |
252b5132 RH |
5321 | { |
5322 | /* Special segments, such as the PT_PHDR segment, may contain | |
5323 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5324 | something. They are allowed by the ELF spec however, so only |
5325 | a warning is produced. */ | |
bc67d8a6 | 5326 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5327 | (*_bfd_error_handler) |
d003868e AM |
5328 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5329 | ibfd); | |
252b5132 | 5330 | |
bc67d8a6 | 5331 | map->count = 0; |
c044fabd KH |
5332 | *pointer_to_map = map; |
5333 | pointer_to_map = &map->next; | |
252b5132 RH |
5334 | |
5335 | continue; | |
5336 | } | |
5337 | ||
5338 | /* Now scan the sections in the input BFD again and attempt | |
5339 | to add their corresponding output sections to the segment map. | |
5340 | The problem here is how to handle an output section which has | |
5341 | been moved (ie had its LMA changed). There are four possibilities: | |
5342 | ||
5343 | 1. None of the sections have been moved. | |
5344 | In this case we can continue to use the segment LMA from the | |
5345 | input BFD. | |
5346 | ||
5347 | 2. All of the sections have been moved by the same amount. | |
5348 | In this case we can change the segment's LMA to match the LMA | |
5349 | of the first section. | |
5350 | ||
5351 | 3. Some of the sections have been moved, others have not. | |
5352 | In this case those sections which have not been moved can be | |
5353 | placed in the current segment which will have to have its size, | |
5354 | and possibly its LMA changed, and a new segment or segments will | |
5355 | have to be created to contain the other sections. | |
5356 | ||
b5f852ea | 5357 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5358 | In this case we can change the segment's LMA to match the LMA |
5359 | of the first section and we will have to create a new segment | |
5360 | or segments to contain the other sections. | |
5361 | ||
5362 | In order to save time, we allocate an array to hold the section | |
5363 | pointers that we are interested in. As these sections get assigned | |
5364 | to a segment, they are removed from this array. */ | |
5365 | ||
0b14c2aa L |
5366 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5367 | to work around this long long bug. */ | |
5368 | amt = section_count * sizeof (asection *); | |
217aa764 | 5369 | sections = bfd_malloc (amt); |
252b5132 | 5370 | if (sections == NULL) |
b34976b6 | 5371 | return FALSE; |
252b5132 RH |
5372 | |
5373 | /* Step One: Scan for segment vs section LMA conflicts. | |
5374 | Also add the sections to the section array allocated above. | |
5375 | Also add the sections to the current segment. In the common | |
5376 | case, where the sections have not been moved, this means that | |
5377 | we have completely filled the segment, and there is nothing | |
5378 | more to do. */ | |
252b5132 | 5379 | isec = 0; |
72730e0c | 5380 | matching_lma = 0; |
252b5132 RH |
5381 | suggested_lma = 0; |
5382 | ||
bc67d8a6 NC |
5383 | for (j = 0, section = ibfd->sections; |
5384 | section != NULL; | |
5385 | section = section->next) | |
252b5132 | 5386 | { |
caf47ea6 | 5387 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5388 | { |
bc67d8a6 NC |
5389 | output_section = section->output_section; |
5390 | ||
5391 | sections[j ++] = section; | |
252b5132 RH |
5392 | |
5393 | /* The Solaris native linker always sets p_paddr to 0. | |
5394 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5395 | correct value. Note - some backends require that |
5396 | p_paddr be left as zero. */ | |
bc67d8a6 | 5397 | if (segment->p_paddr == 0 |
4455705d | 5398 | && segment->p_vaddr != 0 |
5e8d7549 | 5399 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5400 | && isec == 0 |
bc67d8a6 NC |
5401 | && output_section->lma != 0 |
5402 | && (output_section->vma == (segment->p_vaddr | |
5403 | + (map->includes_filehdr | |
5404 | ? iehdr->e_ehsize | |
5405 | : 0) | |
5406 | + (map->includes_phdrs | |
079e9a2f AM |
5407 | ? (iehdr->e_phnum |
5408 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5409 | : 0)))) |
5410 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5411 | |
5412 | /* Match up the physical address of the segment with the | |
5413 | LMA address of the output section. */ | |
bc67d8a6 | 5414 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5415 | || IS_COREFILE_NOTE (segment, section) |
5416 | || (bed->want_p_paddr_set_to_zero && | |
5417 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5418 | ) | |
252b5132 RH |
5419 | { |
5420 | if (matching_lma == 0) | |
bc67d8a6 | 5421 | matching_lma = output_section->lma; |
252b5132 RH |
5422 | |
5423 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5424 | then it does not overlap any other section within that |
252b5132 | 5425 | segment. */ |
bc67d8a6 | 5426 | map->sections[isec ++] = output_section; |
252b5132 RH |
5427 | } |
5428 | else if (suggested_lma == 0) | |
bc67d8a6 | 5429 | suggested_lma = output_section->lma; |
252b5132 RH |
5430 | } |
5431 | } | |
5432 | ||
bc67d8a6 | 5433 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5434 | |
5435 | /* Step Two: Adjust the physical address of the current segment, | |
5436 | if necessary. */ | |
bc67d8a6 | 5437 | if (isec == section_count) |
252b5132 RH |
5438 | { |
5439 | /* All of the sections fitted within the segment as currently | |
5440 | specified. This is the default case. Add the segment to | |
5441 | the list of built segments and carry on to process the next | |
5442 | program header in the input BFD. */ | |
bc67d8a6 | 5443 | map->count = section_count; |
c044fabd KH |
5444 | *pointer_to_map = map; |
5445 | pointer_to_map = &map->next; | |
252b5132 RH |
5446 | |
5447 | free (sections); | |
5448 | continue; | |
5449 | } | |
252b5132 RH |
5450 | else |
5451 | { | |
72730e0c AM |
5452 | if (matching_lma != 0) |
5453 | { | |
5454 | /* At least one section fits inside the current segment. | |
5455 | Keep it, but modify its physical address to match the | |
5456 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5457 | map->p_paddr = matching_lma; |
72730e0c AM |
5458 | } |
5459 | else | |
5460 | { | |
5461 | /* None of the sections fitted inside the current segment. | |
5462 | Change the current segment's physical address to match | |
5463 | the LMA of the first section. */ | |
bc67d8a6 | 5464 | map->p_paddr = suggested_lma; |
72730e0c AM |
5465 | } |
5466 | ||
bc67d8a6 NC |
5467 | /* Offset the segment physical address from the lma |
5468 | to allow for space taken up by elf headers. */ | |
5469 | if (map->includes_filehdr) | |
5470 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5471 | |
bc67d8a6 NC |
5472 | if (map->includes_phdrs) |
5473 | { | |
5474 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5475 | ||
5476 | /* iehdr->e_phnum is just an estimate of the number | |
5477 | of program headers that we will need. Make a note | |
5478 | here of the number we used and the segment we chose | |
5479 | to hold these headers, so that we can adjust the | |
5480 | offset when we know the correct value. */ | |
5481 | phdr_adjust_num = iehdr->e_phnum; | |
5482 | phdr_adjust_seg = map; | |
5483 | } | |
252b5132 RH |
5484 | } |
5485 | ||
5486 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5487 | those that fit to the current segment and removing them from the |
252b5132 RH |
5488 | sections array; but making sure not to leave large gaps. Once all |
5489 | possible sections have been assigned to the current segment it is | |
5490 | added to the list of built segments and if sections still remain | |
5491 | to be assigned, a new segment is constructed before repeating | |
5492 | the loop. */ | |
5493 | isec = 0; | |
5494 | do | |
5495 | { | |
bc67d8a6 | 5496 | map->count = 0; |
252b5132 RH |
5497 | suggested_lma = 0; |
5498 | ||
5499 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5500 | for (j = 0; j < section_count; j++) |
252b5132 | 5501 | { |
bc67d8a6 | 5502 | section = sections[j]; |
252b5132 | 5503 | |
bc67d8a6 | 5504 | if (section == NULL) |
252b5132 RH |
5505 | continue; |
5506 | ||
bc67d8a6 | 5507 | output_section = section->output_section; |
252b5132 | 5508 | |
bc67d8a6 | 5509 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5510 | |
bc67d8a6 NC |
5511 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5512 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5513 | { |
bc67d8a6 | 5514 | if (map->count == 0) |
252b5132 RH |
5515 | { |
5516 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5517 | the beginning of the segment, then something is |
5518 | wrong. */ | |
5519 | if (output_section->lma != | |
5520 | (map->p_paddr | |
5521 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5522 | + (map->includes_phdrs | |
5523 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5524 | : 0))) | |
252b5132 RH |
5525 | abort (); |
5526 | } | |
5527 | else | |
5528 | { | |
5529 | asection * prev_sec; | |
252b5132 | 5530 | |
bc67d8a6 | 5531 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5532 | |
5533 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5534 | and the start of this section is more than |
5535 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5536 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5537 | maxpagesize) |
caf47ea6 | 5538 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5539 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5540 | > output_section->lma)) |
252b5132 RH |
5541 | { |
5542 | if (suggested_lma == 0) | |
bc67d8a6 | 5543 | suggested_lma = output_section->lma; |
252b5132 RH |
5544 | |
5545 | continue; | |
5546 | } | |
5547 | } | |
5548 | ||
bc67d8a6 | 5549 | map->sections[map->count++] = output_section; |
252b5132 RH |
5550 | ++isec; |
5551 | sections[j] = NULL; | |
b34976b6 | 5552 | section->segment_mark = TRUE; |
252b5132 RH |
5553 | } |
5554 | else if (suggested_lma == 0) | |
bc67d8a6 | 5555 | suggested_lma = output_section->lma; |
252b5132 RH |
5556 | } |
5557 | ||
bc67d8a6 | 5558 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5559 | |
5560 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5561 | *pointer_to_map = map; |
5562 | pointer_to_map = &map->next; | |
252b5132 | 5563 | |
bc67d8a6 | 5564 | if (isec < section_count) |
252b5132 RH |
5565 | { |
5566 | /* We still have not allocated all of the sections to | |
5567 | segments. Create a new segment here, initialise it | |
5568 | and carry on looping. */ | |
dc810e39 AM |
5569 | amt = sizeof (struct elf_segment_map); |
5570 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5571 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5572 | if (map == NULL) |
5ed6aba4 NC |
5573 | { |
5574 | free (sections); | |
5575 | return FALSE; | |
5576 | } | |
252b5132 RH |
5577 | |
5578 | /* Initialise the fields of the segment map. Set the physical | |
5579 | physical address to the LMA of the first section that has | |
5580 | not yet been assigned. */ | |
bc67d8a6 NC |
5581 | map->next = NULL; |
5582 | map->p_type = segment->p_type; | |
5583 | map->p_flags = segment->p_flags; | |
5584 | map->p_flags_valid = 1; | |
5585 | map->p_paddr = suggested_lma; | |
5586 | map->p_paddr_valid = 1; | |
5587 | map->includes_filehdr = 0; | |
5588 | map->includes_phdrs = 0; | |
252b5132 RH |
5589 | } |
5590 | } | |
bc67d8a6 | 5591 | while (isec < section_count); |
252b5132 RH |
5592 | |
5593 | free (sections); | |
5594 | } | |
5595 | ||
5596 | /* The Solaris linker creates program headers in which all the | |
5597 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5598 | file, we get confused. Check for this case, and if we find it | |
5599 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5600 | for (map = map_first; map != NULL; map = map->next) |
5601 | if (map->p_paddr != 0) | |
252b5132 | 5602 | break; |
bc67d8a6 | 5603 | if (map == NULL) |
b5f852ea NC |
5604 | for (map = map_first; map != NULL; map = map->next) |
5605 | map->p_paddr_valid = 0; | |
252b5132 | 5606 | |
bc67d8a6 NC |
5607 | elf_tdata (obfd)->segment_map = map_first; |
5608 | ||
5609 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5610 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5611 | the offset if necessary. */ |
5612 | if (phdr_adjust_seg != NULL) | |
5613 | { | |
5614 | unsigned int count; | |
c044fabd | 5615 | |
bc67d8a6 | 5616 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5617 | count++; |
252b5132 | 5618 | |
bc67d8a6 NC |
5619 | if (count > phdr_adjust_num) |
5620 | phdr_adjust_seg->p_paddr | |
5621 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5622 | } | |
c044fabd | 5623 | |
bc67d8a6 | 5624 | #undef SEGMENT_END |
eecdbe52 | 5625 | #undef SECTION_SIZE |
bc67d8a6 NC |
5626 | #undef IS_CONTAINED_BY_VMA |
5627 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5628 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5629 | #undef IS_SOLARIS_PT_INTERP |
5630 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5631 | #undef SEGMENT_AFTER_SEGMENT | |
5632 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5633 | return TRUE; |
252b5132 RH |
5634 | } |
5635 | ||
5636 | /* Copy private section information. This copies over the entsize | |
5637 | field, and sometimes the info field. */ | |
5638 | ||
b34976b6 | 5639 | bfd_boolean |
217aa764 AM |
5640 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5641 | asection *isec, | |
5642 | bfd *obfd, | |
5643 | asection *osec) | |
252b5132 RH |
5644 | { |
5645 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5646 | ||
5647 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5648 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5649 | return TRUE; |
252b5132 | 5650 | |
252b5132 RH |
5651 | ihdr = &elf_section_data (isec)->this_hdr; |
5652 | ohdr = &elf_section_data (osec)->this_hdr; | |
5653 | ||
5654 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5655 | ||
5656 | if (ihdr->sh_type == SHT_SYMTAB | |
5657 | || ihdr->sh_type == SHT_DYNSYM | |
5658 | || ihdr->sh_type == SHT_GNU_verneed | |
5659 | || ihdr->sh_type == SHT_GNU_verdef) | |
5660 | ohdr->sh_info = ihdr->sh_info; | |
5661 | ||
9dce4196 AM |
5662 | /* Set things up for objcopy. The output SHT_GROUP section will |
5663 | have its elf_next_in_group pointing back to the input group | |
278d8f37 L |
5664 | members. Ignore linker created group section. See |
5665 | elfNN_ia64_object_p in elfxx-ia64.c. */ | |
5666 | if (elf_sec_group (isec) == NULL | |
5667 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5668 | { | |
5669 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5670 | elf_group_name (osec) = elf_group_name (isec); | |
5671 | } | |
9dce4196 | 5672 | |
68bfbfcc | 5673 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5674 | |
b34976b6 | 5675 | return TRUE; |
252b5132 RH |
5676 | } |
5677 | ||
80fccad2 BW |
5678 | /* Copy private header information. */ |
5679 | ||
5680 | bfd_boolean | |
5681 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5682 | { | |
5683 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5684 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5685 | return TRUE; | |
5686 | ||
5687 | /* Copy over private BFD data if it has not already been copied. | |
5688 | This must be done here, rather than in the copy_private_bfd_data | |
5689 | entry point, because the latter is called after the section | |
5690 | contents have been set, which means that the program headers have | |
5691 | already been worked out. */ | |
5692 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5693 | { | |
5694 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5695 | return FALSE; | |
5696 | } | |
5697 | ||
5698 | return TRUE; | |
5699 | } | |
5700 | ||
252b5132 RH |
5701 | /* Copy private symbol information. If this symbol is in a section |
5702 | which we did not map into a BFD section, try to map the section | |
5703 | index correctly. We use special macro definitions for the mapped | |
5704 | section indices; these definitions are interpreted by the | |
5705 | swap_out_syms function. */ | |
5706 | ||
9ad5cbcf AM |
5707 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5708 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5709 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5710 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5711 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5712 | |
b34976b6 | 5713 | bfd_boolean |
217aa764 AM |
5714 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5715 | asymbol *isymarg, | |
5716 | bfd *obfd, | |
5717 | asymbol *osymarg) | |
252b5132 RH |
5718 | { |
5719 | elf_symbol_type *isym, *osym; | |
5720 | ||
5721 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5722 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5723 | return TRUE; |
252b5132 RH |
5724 | |
5725 | isym = elf_symbol_from (ibfd, isymarg); | |
5726 | osym = elf_symbol_from (obfd, osymarg); | |
5727 | ||
5728 | if (isym != NULL | |
5729 | && osym != NULL | |
5730 | && bfd_is_abs_section (isym->symbol.section)) | |
5731 | { | |
5732 | unsigned int shndx; | |
5733 | ||
5734 | shndx = isym->internal_elf_sym.st_shndx; | |
5735 | if (shndx == elf_onesymtab (ibfd)) | |
5736 | shndx = MAP_ONESYMTAB; | |
5737 | else if (shndx == elf_dynsymtab (ibfd)) | |
5738 | shndx = MAP_DYNSYMTAB; | |
5739 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5740 | shndx = MAP_STRTAB; | |
5741 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5742 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5743 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5744 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5745 | osym->internal_elf_sym.st_shndx = shndx; |
5746 | } | |
5747 | ||
b34976b6 | 5748 | return TRUE; |
252b5132 RH |
5749 | } |
5750 | ||
5751 | /* Swap out the symbols. */ | |
5752 | ||
b34976b6 | 5753 | static bfd_boolean |
217aa764 AM |
5754 | swap_out_syms (bfd *abfd, |
5755 | struct bfd_strtab_hash **sttp, | |
5756 | int relocatable_p) | |
252b5132 | 5757 | { |
9c5bfbb7 | 5758 | const struct elf_backend_data *bed; |
079e9a2f AM |
5759 | int symcount; |
5760 | asymbol **syms; | |
5761 | struct bfd_strtab_hash *stt; | |
5762 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5763 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5764 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5765 | bfd_byte *outbound_syms; |
5766 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5767 | int idx; |
5768 | bfd_size_type amt; | |
174fd7f9 | 5769 | bfd_boolean name_local_sections; |
252b5132 RH |
5770 | |
5771 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5772 | return FALSE; |
252b5132 | 5773 | |
c044fabd | 5774 | /* Dump out the symtabs. */ |
079e9a2f AM |
5775 | stt = _bfd_elf_stringtab_init (); |
5776 | if (stt == NULL) | |
b34976b6 | 5777 | return FALSE; |
252b5132 | 5778 | |
079e9a2f AM |
5779 | bed = get_elf_backend_data (abfd); |
5780 | symcount = bfd_get_symcount (abfd); | |
5781 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5782 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5783 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5784 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5785 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5786 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5787 | |
5788 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5789 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5790 | ||
5791 | amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; | |
5792 | outbound_syms = bfd_alloc (abfd, amt); | |
5793 | if (outbound_syms == NULL) | |
5ed6aba4 NC |
5794 | { |
5795 | _bfd_stringtab_free (stt); | |
5796 | return FALSE; | |
5797 | } | |
217aa764 | 5798 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5799 | |
9ad5cbcf AM |
5800 | outbound_shndx = NULL; |
5801 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5802 | if (symtab_shndx_hdr->sh_name != 0) | |
5803 | { | |
5804 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
1126897b | 5805 | outbound_shndx = bfd_zalloc (abfd, amt); |
9ad5cbcf | 5806 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5807 | { |
5808 | _bfd_stringtab_free (stt); | |
5809 | return FALSE; | |
5810 | } | |
5811 | ||
9ad5cbcf AM |
5812 | symtab_shndx_hdr->contents = outbound_shndx; |
5813 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5814 | symtab_shndx_hdr->sh_size = amt; | |
5815 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5816 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5817 | } | |
5818 | ||
589e6347 | 5819 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5820 | { |
5821 | /* Fill in zeroth symbol and swap it out. */ | |
5822 | Elf_Internal_Sym sym; | |
5823 | sym.st_name = 0; | |
5824 | sym.st_value = 0; | |
5825 | sym.st_size = 0; | |
5826 | sym.st_info = 0; | |
5827 | sym.st_other = 0; | |
5828 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5829 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5830 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5831 | if (outbound_shndx != NULL) |
5832 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5833 | } |
252b5132 | 5834 | |
174fd7f9 RS |
5835 | name_local_sections |
5836 | = (bed->elf_backend_name_local_section_symbols | |
5837 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5838 | ||
079e9a2f AM |
5839 | syms = bfd_get_outsymbols (abfd); |
5840 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5841 | { |
252b5132 | 5842 | Elf_Internal_Sym sym; |
079e9a2f AM |
5843 | bfd_vma value = syms[idx]->value; |
5844 | elf_symbol_type *type_ptr; | |
5845 | flagword flags = syms[idx]->flags; | |
5846 | int type; | |
252b5132 | 5847 | |
174fd7f9 RS |
5848 | if (!name_local_sections |
5849 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5850 | { |
5851 | /* Local section symbols have no name. */ | |
5852 | sym.st_name = 0; | |
5853 | } | |
5854 | else | |
5855 | { | |
5856 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5857 | syms[idx]->name, | |
b34976b6 | 5858 | TRUE, FALSE); |
079e9a2f | 5859 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5860 | { |
5861 | _bfd_stringtab_free (stt); | |
5862 | return FALSE; | |
5863 | } | |
079e9a2f | 5864 | } |
252b5132 | 5865 | |
079e9a2f | 5866 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5867 | |
079e9a2f AM |
5868 | if ((flags & BSF_SECTION_SYM) == 0 |
5869 | && bfd_is_com_section (syms[idx]->section)) | |
5870 | { | |
5871 | /* ELF common symbols put the alignment into the `value' field, | |
5872 | and the size into the `size' field. This is backwards from | |
5873 | how BFD handles it, so reverse it here. */ | |
5874 | sym.st_size = value; | |
5875 | if (type_ptr == NULL | |
5876 | || type_ptr->internal_elf_sym.st_value == 0) | |
5877 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5878 | else | |
5879 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5880 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5881 | (abfd, syms[idx]->section); | |
5882 | } | |
5883 | else | |
5884 | { | |
5885 | asection *sec = syms[idx]->section; | |
5886 | int shndx; | |
252b5132 | 5887 | |
079e9a2f AM |
5888 | if (sec->output_section) |
5889 | { | |
5890 | value += sec->output_offset; | |
5891 | sec = sec->output_section; | |
5892 | } | |
589e6347 | 5893 | |
079e9a2f AM |
5894 | /* Don't add in the section vma for relocatable output. */ |
5895 | if (! relocatable_p) | |
5896 | value += sec->vma; | |
5897 | sym.st_value = value; | |
5898 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5899 | ||
5900 | if (bfd_is_abs_section (sec) | |
5901 | && type_ptr != NULL | |
5902 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5903 | { | |
5904 | /* This symbol is in a real ELF section which we did | |
5905 | not create as a BFD section. Undo the mapping done | |
5906 | by copy_private_symbol_data. */ | |
5907 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5908 | switch (shndx) | |
5909 | { | |
5910 | case MAP_ONESYMTAB: | |
5911 | shndx = elf_onesymtab (abfd); | |
5912 | break; | |
5913 | case MAP_DYNSYMTAB: | |
5914 | shndx = elf_dynsymtab (abfd); | |
5915 | break; | |
5916 | case MAP_STRTAB: | |
5917 | shndx = elf_tdata (abfd)->strtab_section; | |
5918 | break; | |
5919 | case MAP_SHSTRTAB: | |
5920 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5921 | break; | |
9ad5cbcf AM |
5922 | case MAP_SYM_SHNDX: |
5923 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5924 | break; | |
079e9a2f AM |
5925 | default: |
5926 | break; | |
5927 | } | |
5928 | } | |
5929 | else | |
5930 | { | |
5931 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5932 | |
079e9a2f AM |
5933 | if (shndx == -1) |
5934 | { | |
5935 | asection *sec2; | |
5936 | ||
5937 | /* Writing this would be a hell of a lot easier if | |
5938 | we had some decent documentation on bfd, and | |
5939 | knew what to expect of the library, and what to | |
5940 | demand of applications. For example, it | |
5941 | appears that `objcopy' might not set the | |
5942 | section of a symbol to be a section that is | |
5943 | actually in the output file. */ | |
5944 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5945 | if (sec2 == NULL) |
5946 | { | |
5947 | _bfd_error_handler (_("\ | |
5948 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5949 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5950 | sec->name); | |
811072d8 | 5951 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5952 | _bfd_stringtab_free (stt); |
589e6347 NC |
5953 | return FALSE; |
5954 | } | |
811072d8 | 5955 | |
079e9a2f AM |
5956 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5957 | BFD_ASSERT (shndx != -1); | |
5958 | } | |
5959 | } | |
252b5132 | 5960 | |
079e9a2f AM |
5961 | sym.st_shndx = shndx; |
5962 | } | |
252b5132 | 5963 | |
13ae64f3 JJ |
5964 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5965 | type = STT_TLS; | |
5966 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5967 | type = STT_FUNC; |
5968 | else if ((flags & BSF_OBJECT) != 0) | |
5969 | type = STT_OBJECT; | |
5970 | else | |
5971 | type = STT_NOTYPE; | |
252b5132 | 5972 | |
13ae64f3 JJ |
5973 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5974 | type = STT_TLS; | |
5975 | ||
589e6347 | 5976 | /* Processor-specific types. */ |
079e9a2f AM |
5977 | if (type_ptr != NULL |
5978 | && bed->elf_backend_get_symbol_type) | |
5979 | type = ((*bed->elf_backend_get_symbol_type) | |
5980 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5981 | |
079e9a2f AM |
5982 | if (flags & BSF_SECTION_SYM) |
5983 | { | |
5984 | if (flags & BSF_GLOBAL) | |
5985 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5986 | else | |
5987 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
5988 | } | |
5989 | else if (bfd_is_com_section (syms[idx]->section)) | |
5990 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
5991 | else if (bfd_is_und_section (syms[idx]->section)) | |
5992 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
5993 | ? STB_WEAK | |
5994 | : STB_GLOBAL), | |
5995 | type); | |
5996 | else if (flags & BSF_FILE) | |
5997 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
5998 | else | |
5999 | { | |
6000 | int bind = STB_LOCAL; | |
252b5132 | 6001 | |
079e9a2f AM |
6002 | if (flags & BSF_LOCAL) |
6003 | bind = STB_LOCAL; | |
6004 | else if (flags & BSF_WEAK) | |
6005 | bind = STB_WEAK; | |
6006 | else if (flags & BSF_GLOBAL) | |
6007 | bind = STB_GLOBAL; | |
252b5132 | 6008 | |
079e9a2f AM |
6009 | sym.st_info = ELF_ST_INFO (bind, type); |
6010 | } | |
252b5132 | 6011 | |
079e9a2f AM |
6012 | if (type_ptr != NULL) |
6013 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6014 | else | |
6015 | sym.st_other = 0; | |
252b5132 | 6016 | |
9ad5cbcf | 6017 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6018 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6019 | if (outbound_shndx != NULL) |
6020 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6021 | } |
252b5132 | 6022 | |
079e9a2f AM |
6023 | *sttp = stt; |
6024 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6025 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6026 | |
079e9a2f AM |
6027 | symstrtab_hdr->sh_flags = 0; |
6028 | symstrtab_hdr->sh_addr = 0; | |
6029 | symstrtab_hdr->sh_entsize = 0; | |
6030 | symstrtab_hdr->sh_link = 0; | |
6031 | symstrtab_hdr->sh_info = 0; | |
6032 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6033 | |
b34976b6 | 6034 | return TRUE; |
252b5132 RH |
6035 | } |
6036 | ||
6037 | /* Return the number of bytes required to hold the symtab vector. | |
6038 | ||
6039 | Note that we base it on the count plus 1, since we will null terminate | |
6040 | the vector allocated based on this size. However, the ELF symbol table | |
6041 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6042 | ||
6043 | long | |
217aa764 | 6044 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6045 | { |
6046 | long symcount; | |
6047 | long symtab_size; | |
6048 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6049 | ||
6050 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6051 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6052 | if (symcount > 0) | |
6053 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6054 | |
6055 | return symtab_size; | |
6056 | } | |
6057 | ||
6058 | long | |
217aa764 | 6059 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6060 | { |
6061 | long symcount; | |
6062 | long symtab_size; | |
6063 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6064 | ||
6065 | if (elf_dynsymtab (abfd) == 0) | |
6066 | { | |
6067 | bfd_set_error (bfd_error_invalid_operation); | |
6068 | return -1; | |
6069 | } | |
6070 | ||
6071 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6072 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6073 | if (symcount > 0) | |
6074 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6075 | |
6076 | return symtab_size; | |
6077 | } | |
6078 | ||
6079 | long | |
217aa764 AM |
6080 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6081 | sec_ptr asect) | |
252b5132 RH |
6082 | { |
6083 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6084 | } | |
6085 | ||
6086 | /* Canonicalize the relocs. */ | |
6087 | ||
6088 | long | |
217aa764 AM |
6089 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6090 | sec_ptr section, | |
6091 | arelent **relptr, | |
6092 | asymbol **symbols) | |
252b5132 RH |
6093 | { |
6094 | arelent *tblptr; | |
6095 | unsigned int i; | |
9c5bfbb7 | 6096 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6097 | |
b34976b6 | 6098 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6099 | return -1; |
6100 | ||
6101 | tblptr = section->relocation; | |
6102 | for (i = 0; i < section->reloc_count; i++) | |
6103 | *relptr++ = tblptr++; | |
6104 | ||
6105 | *relptr = NULL; | |
6106 | ||
6107 | return section->reloc_count; | |
6108 | } | |
6109 | ||
6110 | long | |
6cee3f79 | 6111 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6112 | { |
9c5bfbb7 | 6113 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6114 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6115 | |
6116 | if (symcount >= 0) | |
6117 | bfd_get_symcount (abfd) = symcount; | |
6118 | return symcount; | |
6119 | } | |
6120 | ||
6121 | long | |
217aa764 AM |
6122 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6123 | asymbol **allocation) | |
252b5132 | 6124 | { |
9c5bfbb7 | 6125 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6126 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6127 | |
6128 | if (symcount >= 0) | |
6129 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6130 | return symcount; | |
252b5132 RH |
6131 | } |
6132 | ||
8615f3f2 AM |
6133 | /* Return the size required for the dynamic reloc entries. Any loadable |
6134 | section that was actually installed in the BFD, and has type SHT_REL | |
6135 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6136 | dynamic reloc section. */ | |
252b5132 RH |
6137 | |
6138 | long | |
217aa764 | 6139 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6140 | { |
6141 | long ret; | |
6142 | asection *s; | |
6143 | ||
6144 | if (elf_dynsymtab (abfd) == 0) | |
6145 | { | |
6146 | bfd_set_error (bfd_error_invalid_operation); | |
6147 | return -1; | |
6148 | } | |
6149 | ||
6150 | ret = sizeof (arelent *); | |
6151 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6152 | if ((s->flags & SEC_LOAD) != 0 |
6153 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6154 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6155 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6156 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6157 | * sizeof (arelent *)); |
6158 | ||
6159 | return ret; | |
6160 | } | |
6161 | ||
8615f3f2 AM |
6162 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6163 | dynamic relocations as a single block, although they are actually | |
6164 | associated with particular sections; the interface, which was | |
6165 | designed for SunOS style shared libraries, expects that there is only | |
6166 | one set of dynamic relocs. Any loadable section that was actually | |
6167 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6168 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6169 | |
6170 | long | |
217aa764 AM |
6171 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6172 | arelent **storage, | |
6173 | asymbol **syms) | |
252b5132 | 6174 | { |
217aa764 | 6175 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6176 | asection *s; |
6177 | long ret; | |
6178 | ||
6179 | if (elf_dynsymtab (abfd) == 0) | |
6180 | { | |
6181 | bfd_set_error (bfd_error_invalid_operation); | |
6182 | return -1; | |
6183 | } | |
6184 | ||
6185 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6186 | ret = 0; | |
6187 | for (s = abfd->sections; s != NULL; s = s->next) | |
6188 | { | |
8615f3f2 AM |
6189 | if ((s->flags & SEC_LOAD) != 0 |
6190 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6191 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6192 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6193 | { | |
6194 | arelent *p; | |
6195 | long count, i; | |
6196 | ||
b34976b6 | 6197 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6198 | return -1; |
eea6121a | 6199 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6200 | p = s->relocation; |
6201 | for (i = 0; i < count; i++) | |
6202 | *storage++ = p++; | |
6203 | ret += count; | |
6204 | } | |
6205 | } | |
6206 | ||
6207 | *storage = NULL; | |
6208 | ||
6209 | return ret; | |
6210 | } | |
6211 | \f | |
6212 | /* Read in the version information. */ | |
6213 | ||
b34976b6 | 6214 | bfd_boolean |
fc0e6df6 | 6215 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6216 | { |
6217 | bfd_byte *contents = NULL; | |
dc810e39 | 6218 | bfd_size_type amt; |
fc0e6df6 PB |
6219 | unsigned int freeidx = 0; |
6220 | ||
6221 | if (elf_dynverref (abfd) != 0) | |
6222 | { | |
6223 | Elf_Internal_Shdr *hdr; | |
6224 | Elf_External_Verneed *everneed; | |
6225 | Elf_Internal_Verneed *iverneed; | |
6226 | unsigned int i; | |
6227 | ||
6228 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6229 | ||
6230 | amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); | |
6231 | elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); | |
6232 | if (elf_tdata (abfd)->verref == NULL) | |
6233 | goto error_return; | |
6234 | ||
6235 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6236 | ||
6237 | contents = bfd_malloc (hdr->sh_size); | |
6238 | if (contents == NULL) | |
6239 | goto error_return; | |
6240 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
6241 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
6242 | goto error_return; | |
6243 | ||
6244 | everneed = (Elf_External_Verneed *) contents; | |
6245 | iverneed = elf_tdata (abfd)->verref; | |
6246 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6247 | { | |
6248 | Elf_External_Vernaux *evernaux; | |
6249 | Elf_Internal_Vernaux *ivernaux; | |
6250 | unsigned int j; | |
6251 | ||
6252 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6253 | ||
6254 | iverneed->vn_bfd = abfd; | |
6255 | ||
6256 | iverneed->vn_filename = | |
6257 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6258 | iverneed->vn_file); | |
6259 | if (iverneed->vn_filename == NULL) | |
6260 | goto error_return; | |
6261 | ||
6262 | amt = iverneed->vn_cnt; | |
6263 | amt *= sizeof (Elf_Internal_Vernaux); | |
6264 | iverneed->vn_auxptr = bfd_alloc (abfd, amt); | |
6265 | ||
6266 | evernaux = ((Elf_External_Vernaux *) | |
6267 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6268 | ivernaux = iverneed->vn_auxptr; | |
6269 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6270 | { | |
6271 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6272 | ||
6273 | ivernaux->vna_nodename = | |
6274 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6275 | ivernaux->vna_name); | |
6276 | if (ivernaux->vna_nodename == NULL) | |
6277 | goto error_return; | |
6278 | ||
6279 | if (j + 1 < iverneed->vn_cnt) | |
6280 | ivernaux->vna_nextptr = ivernaux + 1; | |
6281 | else | |
6282 | ivernaux->vna_nextptr = NULL; | |
6283 | ||
6284 | evernaux = ((Elf_External_Vernaux *) | |
6285 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6286 | ||
6287 | if (ivernaux->vna_other > freeidx) | |
6288 | freeidx = ivernaux->vna_other; | |
6289 | } | |
6290 | ||
6291 | if (i + 1 < hdr->sh_info) | |
6292 | iverneed->vn_nextref = iverneed + 1; | |
6293 | else | |
6294 | iverneed->vn_nextref = NULL; | |
6295 | ||
6296 | everneed = ((Elf_External_Verneed *) | |
6297 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6298 | } | |
6299 | ||
6300 | free (contents); | |
6301 | contents = NULL; | |
6302 | } | |
252b5132 RH |
6303 | |
6304 | if (elf_dynverdef (abfd) != 0) | |
6305 | { | |
6306 | Elf_Internal_Shdr *hdr; | |
6307 | Elf_External_Verdef *everdef; | |
6308 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6309 | Elf_Internal_Verdef *iverdefarr; |
6310 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6311 | unsigned int i; |
062e2358 | 6312 | unsigned int maxidx; |
252b5132 RH |
6313 | |
6314 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6315 | ||
217aa764 | 6316 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6317 | if (contents == NULL) |
6318 | goto error_return; | |
6319 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6320 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6321 | goto error_return; |
6322 | ||
f631889e UD |
6323 | /* We know the number of entries in the section but not the maximum |
6324 | index. Therefore we have to run through all entries and find | |
6325 | the maximum. */ | |
252b5132 | 6326 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6327 | maxidx = 0; |
6328 | for (i = 0; i < hdr->sh_info; ++i) | |
6329 | { | |
6330 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6331 | ||
062e2358 AM |
6332 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6333 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e UD |
6334 | |
6335 | everdef = ((Elf_External_Verdef *) | |
6336 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6337 | } | |
6338 | ||
fc0e6df6 PB |
6339 | if (default_imported_symver) |
6340 | { | |
6341 | if (freeidx > maxidx) | |
6342 | maxidx = ++freeidx; | |
6343 | else | |
6344 | freeidx = ++maxidx; | |
6345 | } | |
dc810e39 | 6346 | amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); |
217aa764 | 6347 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); |
f631889e UD |
6348 | if (elf_tdata (abfd)->verdef == NULL) |
6349 | goto error_return; | |
6350 | ||
6351 | elf_tdata (abfd)->cverdefs = maxidx; | |
6352 | ||
6353 | everdef = (Elf_External_Verdef *) contents; | |
6354 | iverdefarr = elf_tdata (abfd)->verdef; | |
6355 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6356 | { |
6357 | Elf_External_Verdaux *everdaux; | |
6358 | Elf_Internal_Verdaux *iverdaux; | |
6359 | unsigned int j; | |
6360 | ||
f631889e UD |
6361 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6362 | ||
6363 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; | |
6364 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6365 | |
6366 | iverdef->vd_bfd = abfd; | |
6367 | ||
dc810e39 | 6368 | amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); |
217aa764 | 6369 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
6370 | if (iverdef->vd_auxptr == NULL) |
6371 | goto error_return; | |
6372 | ||
6373 | everdaux = ((Elf_External_Verdaux *) | |
6374 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6375 | iverdaux = iverdef->vd_auxptr; | |
6376 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6377 | { | |
6378 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6379 | ||
6380 | iverdaux->vda_nodename = | |
6381 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6382 | iverdaux->vda_name); | |
6383 | if (iverdaux->vda_nodename == NULL) | |
6384 | goto error_return; | |
6385 | ||
6386 | if (j + 1 < iverdef->vd_cnt) | |
6387 | iverdaux->vda_nextptr = iverdaux + 1; | |
6388 | else | |
6389 | iverdaux->vda_nextptr = NULL; | |
6390 | ||
6391 | everdaux = ((Elf_External_Verdaux *) | |
6392 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6393 | } | |
6394 | ||
6395 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
6396 | ||
6397 | if (i + 1 < hdr->sh_info) | |
6398 | iverdef->vd_nextdef = iverdef + 1; | |
6399 | else | |
6400 | iverdef->vd_nextdef = NULL; | |
6401 | ||
6402 | everdef = ((Elf_External_Verdef *) | |
6403 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6404 | } | |
6405 | ||
6406 | free (contents); | |
6407 | contents = NULL; | |
6408 | } | |
fc0e6df6 | 6409 | else if (default_imported_symver) |
252b5132 | 6410 | { |
fc0e6df6 PB |
6411 | if (freeidx < 3) |
6412 | freeidx = 3; | |
6413 | else | |
6414 | freeidx++; | |
252b5132 | 6415 | |
fc0e6df6 PB |
6416 | amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef); |
6417 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); | |
6418 | if (elf_tdata (abfd)->verdef == NULL) | |
252b5132 RH |
6419 | goto error_return; |
6420 | ||
fc0e6df6 PB |
6421 | elf_tdata (abfd)->cverdefs = freeidx; |
6422 | } | |
252b5132 | 6423 | |
fc0e6df6 PB |
6424 | /* Create a default version based on the soname. */ |
6425 | if (default_imported_symver) | |
6426 | { | |
6427 | Elf_Internal_Verdef *iverdef; | |
6428 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6429 | |
fc0e6df6 | 6430 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6431 | |
fc0e6df6 PB |
6432 | iverdef->vd_version = VER_DEF_CURRENT; |
6433 | iverdef->vd_flags = 0; | |
6434 | iverdef->vd_ndx = freeidx; | |
6435 | iverdef->vd_cnt = 1; | |
252b5132 | 6436 | |
fc0e6df6 | 6437 | iverdef->vd_bfd = abfd; |
252b5132 | 6438 | |
fc0e6df6 PB |
6439 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6440 | if (iverdef->vd_nodename == NULL) | |
6441 | goto error_return; | |
6442 | iverdef->vd_nextdef = NULL; | |
6443 | amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux); | |
6444 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); | |
252b5132 | 6445 | |
fc0e6df6 PB |
6446 | iverdaux = iverdef->vd_auxptr; |
6447 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6448 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6449 | } |
6450 | ||
b34976b6 | 6451 | return TRUE; |
252b5132 RH |
6452 | |
6453 | error_return: | |
5ed6aba4 | 6454 | if (contents != NULL) |
252b5132 | 6455 | free (contents); |
b34976b6 | 6456 | return FALSE; |
252b5132 RH |
6457 | } |
6458 | \f | |
6459 | asymbol * | |
217aa764 | 6460 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6461 | { |
6462 | elf_symbol_type *newsym; | |
dc810e39 | 6463 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6464 | |
217aa764 | 6465 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6466 | if (!newsym) |
6467 | return NULL; | |
6468 | else | |
6469 | { | |
6470 | newsym->symbol.the_bfd = abfd; | |
6471 | return &newsym->symbol; | |
6472 | } | |
6473 | } | |
6474 | ||
6475 | void | |
217aa764 AM |
6476 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6477 | asymbol *symbol, | |
6478 | symbol_info *ret) | |
252b5132 RH |
6479 | { |
6480 | bfd_symbol_info (symbol, ret); | |
6481 | } | |
6482 | ||
6483 | /* Return whether a symbol name implies a local symbol. Most targets | |
6484 | use this function for the is_local_label_name entry point, but some | |
6485 | override it. */ | |
6486 | ||
b34976b6 | 6487 | bfd_boolean |
217aa764 AM |
6488 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6489 | const char *name) | |
252b5132 RH |
6490 | { |
6491 | /* Normal local symbols start with ``.L''. */ | |
6492 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6493 | return TRUE; |
252b5132 RH |
6494 | |
6495 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6496 | DWARF debugging symbols starting with ``..''. */ | |
6497 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6498 | return TRUE; |
252b5132 RH |
6499 | |
6500 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6501 | emitting DWARF debugging output. I suspect this is actually a | |
6502 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6503 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6504 | underscore to be emitted on some ELF targets). For ease of use, | |
6505 | we treat such symbols as local. */ | |
6506 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6507 | return TRUE; |
252b5132 | 6508 | |
b34976b6 | 6509 | return FALSE; |
252b5132 RH |
6510 | } |
6511 | ||
6512 | alent * | |
217aa764 AM |
6513 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6514 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6515 | { |
6516 | abort (); | |
6517 | return NULL; | |
6518 | } | |
6519 | ||
b34976b6 | 6520 | bfd_boolean |
217aa764 AM |
6521 | _bfd_elf_set_arch_mach (bfd *abfd, |
6522 | enum bfd_architecture arch, | |
6523 | unsigned long machine) | |
252b5132 RH |
6524 | { |
6525 | /* If this isn't the right architecture for this backend, and this | |
6526 | isn't the generic backend, fail. */ | |
6527 | if (arch != get_elf_backend_data (abfd)->arch | |
6528 | && arch != bfd_arch_unknown | |
6529 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6530 | return FALSE; |
252b5132 RH |
6531 | |
6532 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6533 | } | |
6534 | ||
d1fad7c6 NC |
6535 | /* Find the function to a particular section and offset, |
6536 | for error reporting. */ | |
252b5132 | 6537 | |
b34976b6 | 6538 | static bfd_boolean |
217aa764 AM |
6539 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6540 | asection *section, | |
6541 | asymbol **symbols, | |
6542 | bfd_vma offset, | |
6543 | const char **filename_ptr, | |
6544 | const char **functionname_ptr) | |
252b5132 | 6545 | { |
252b5132 | 6546 | const char *filename; |
57426232 | 6547 | asymbol *func, *file; |
252b5132 RH |
6548 | bfd_vma low_func; |
6549 | asymbol **p; | |
57426232 JB |
6550 | /* ??? Given multiple file symbols, it is impossible to reliably |
6551 | choose the right file name for global symbols. File symbols are | |
6552 | local symbols, and thus all file symbols must sort before any | |
6553 | global symbols. The ELF spec may be interpreted to say that a | |
6554 | file symbol must sort before other local symbols, but currently | |
6555 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6556 | make a better choice of file name for local symbols by ignoring | |
6557 | file symbols appearing after a given local symbol. */ | |
6558 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6559 | |
252b5132 RH |
6560 | filename = NULL; |
6561 | func = NULL; | |
57426232 | 6562 | file = NULL; |
252b5132 | 6563 | low_func = 0; |
57426232 | 6564 | state = nothing_seen; |
252b5132 RH |
6565 | |
6566 | for (p = symbols; *p != NULL; p++) | |
6567 | { | |
6568 | elf_symbol_type *q; | |
6569 | ||
6570 | q = (elf_symbol_type *) *p; | |
6571 | ||
252b5132 RH |
6572 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6573 | { | |
6574 | default: | |
6575 | break; | |
6576 | case STT_FILE: | |
57426232 JB |
6577 | file = &q->symbol; |
6578 | if (state == symbol_seen) | |
6579 | state = file_after_symbol_seen; | |
6580 | continue; | |
6581 | case STT_SECTION: | |
6582 | continue; | |
252b5132 RH |
6583 | case STT_NOTYPE: |
6584 | case STT_FUNC: | |
6b40fcba | 6585 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6586 | && q->symbol.value >= low_func |
6587 | && q->symbol.value <= offset) | |
6588 | { | |
6589 | func = (asymbol *) q; | |
6590 | low_func = q->symbol.value; | |
57426232 JB |
6591 | if (file == NULL) |
6592 | filename = NULL; | |
6593 | else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL | |
6594 | && state == file_after_symbol_seen) | |
6595 | filename = NULL; | |
6596 | else | |
6597 | filename = bfd_asymbol_name (file); | |
252b5132 RH |
6598 | } |
6599 | break; | |
6600 | } | |
57426232 JB |
6601 | if (state == nothing_seen) |
6602 | state = symbol_seen; | |
252b5132 RH |
6603 | } |
6604 | ||
6605 | if (func == NULL) | |
b34976b6 | 6606 | return FALSE; |
252b5132 | 6607 | |
d1fad7c6 NC |
6608 | if (filename_ptr) |
6609 | *filename_ptr = filename; | |
6610 | if (functionname_ptr) | |
6611 | *functionname_ptr = bfd_asymbol_name (func); | |
6612 | ||
b34976b6 | 6613 | return TRUE; |
d1fad7c6 NC |
6614 | } |
6615 | ||
6616 | /* Find the nearest line to a particular section and offset, | |
6617 | for error reporting. */ | |
6618 | ||
b34976b6 | 6619 | bfd_boolean |
217aa764 AM |
6620 | _bfd_elf_find_nearest_line (bfd *abfd, |
6621 | asection *section, | |
6622 | asymbol **symbols, | |
6623 | bfd_vma offset, | |
6624 | const char **filename_ptr, | |
6625 | const char **functionname_ptr, | |
6626 | unsigned int *line_ptr) | |
d1fad7c6 | 6627 | { |
b34976b6 | 6628 | bfd_boolean found; |
d1fad7c6 NC |
6629 | |
6630 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6631 | filename_ptr, functionname_ptr, |
6632 | line_ptr)) | |
d1fad7c6 NC |
6633 | { |
6634 | if (!*functionname_ptr) | |
4e8a9624 AM |
6635 | elf_find_function (abfd, section, symbols, offset, |
6636 | *filename_ptr ? NULL : filename_ptr, | |
6637 | functionname_ptr); | |
6638 | ||
b34976b6 | 6639 | return TRUE; |
d1fad7c6 NC |
6640 | } |
6641 | ||
6642 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6643 | filename_ptr, functionname_ptr, |
6644 | line_ptr, 0, | |
6645 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6646 | { |
6647 | if (!*functionname_ptr) | |
4e8a9624 AM |
6648 | elf_find_function (abfd, section, symbols, offset, |
6649 | *filename_ptr ? NULL : filename_ptr, | |
6650 | functionname_ptr); | |
6651 | ||
b34976b6 | 6652 | return TRUE; |
d1fad7c6 NC |
6653 | } |
6654 | ||
6655 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6656 | &found, filename_ptr, |
6657 | functionname_ptr, line_ptr, | |
6658 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6659 | return FALSE; |
dc43ada5 | 6660 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6661 | return TRUE; |
d1fad7c6 NC |
6662 | |
6663 | if (symbols == NULL) | |
b34976b6 | 6664 | return FALSE; |
d1fad7c6 NC |
6665 | |
6666 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6667 | filename_ptr, functionname_ptr)) |
b34976b6 | 6668 | return FALSE; |
d1fad7c6 | 6669 | |
252b5132 | 6670 | *line_ptr = 0; |
b34976b6 | 6671 | return TRUE; |
252b5132 RH |
6672 | } |
6673 | ||
6674 | int | |
217aa764 | 6675 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6676 | { |
6677 | int ret; | |
6678 | ||
6679 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6680 | if (! reloc) | |
6681 | ret += get_program_header_size (abfd); | |
6682 | return ret; | |
6683 | } | |
6684 | ||
b34976b6 | 6685 | bfd_boolean |
217aa764 AM |
6686 | _bfd_elf_set_section_contents (bfd *abfd, |
6687 | sec_ptr section, | |
0f867abe | 6688 | const void *location, |
217aa764 AM |
6689 | file_ptr offset, |
6690 | bfd_size_type count) | |
252b5132 RH |
6691 | { |
6692 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6693 | bfd_signed_vma pos; |
252b5132 RH |
6694 | |
6695 | if (! abfd->output_has_begun | |
217aa764 | 6696 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6697 | return FALSE; |
252b5132 RH |
6698 | |
6699 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6700 | pos = hdr->sh_offset + offset; |
6701 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6702 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6703 | return FALSE; |
252b5132 | 6704 | |
b34976b6 | 6705 | return TRUE; |
252b5132 RH |
6706 | } |
6707 | ||
6708 | void | |
217aa764 AM |
6709 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6710 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6711 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6712 | { |
6713 | abort (); | |
6714 | } | |
6715 | ||
252b5132 RH |
6716 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6717 | ||
b34976b6 | 6718 | bfd_boolean |
217aa764 | 6719 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6720 | { |
c044fabd | 6721 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6722 | |
6723 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6724 | { | |
6725 | bfd_reloc_code_real_type code; | |
6726 | reloc_howto_type *howto; | |
6727 | ||
6728 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6729 | equivalent ELF reloc. */ |
252b5132 RH |
6730 | |
6731 | if (areloc->howto->pc_relative) | |
6732 | { | |
6733 | switch (areloc->howto->bitsize) | |
6734 | { | |
6735 | case 8: | |
6736 | code = BFD_RELOC_8_PCREL; | |
6737 | break; | |
6738 | case 12: | |
6739 | code = BFD_RELOC_12_PCREL; | |
6740 | break; | |
6741 | case 16: | |
6742 | code = BFD_RELOC_16_PCREL; | |
6743 | break; | |
6744 | case 24: | |
6745 | code = BFD_RELOC_24_PCREL; | |
6746 | break; | |
6747 | case 32: | |
6748 | code = BFD_RELOC_32_PCREL; | |
6749 | break; | |
6750 | case 64: | |
6751 | code = BFD_RELOC_64_PCREL; | |
6752 | break; | |
6753 | default: | |
6754 | goto fail; | |
6755 | } | |
6756 | ||
6757 | howto = bfd_reloc_type_lookup (abfd, code); | |
6758 | ||
6759 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6760 | { | |
6761 | if (howto->pcrel_offset) | |
6762 | areloc->addend += areloc->address; | |
6763 | else | |
6764 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6765 | } | |
6766 | } | |
6767 | else | |
6768 | { | |
6769 | switch (areloc->howto->bitsize) | |
6770 | { | |
6771 | case 8: | |
6772 | code = BFD_RELOC_8; | |
6773 | break; | |
6774 | case 14: | |
6775 | code = BFD_RELOC_14; | |
6776 | break; | |
6777 | case 16: | |
6778 | code = BFD_RELOC_16; | |
6779 | break; | |
6780 | case 26: | |
6781 | code = BFD_RELOC_26; | |
6782 | break; | |
6783 | case 32: | |
6784 | code = BFD_RELOC_32; | |
6785 | break; | |
6786 | case 64: | |
6787 | code = BFD_RELOC_64; | |
6788 | break; | |
6789 | default: | |
6790 | goto fail; | |
6791 | } | |
6792 | ||
6793 | howto = bfd_reloc_type_lookup (abfd, code); | |
6794 | } | |
6795 | ||
6796 | if (howto) | |
6797 | areloc->howto = howto; | |
6798 | else | |
6799 | goto fail; | |
6800 | } | |
6801 | ||
b34976b6 | 6802 | return TRUE; |
252b5132 RH |
6803 | |
6804 | fail: | |
6805 | (*_bfd_error_handler) | |
d003868e AM |
6806 | (_("%B: unsupported relocation type %s"), |
6807 | abfd, areloc->howto->name); | |
252b5132 | 6808 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6809 | return FALSE; |
252b5132 RH |
6810 | } |
6811 | ||
b34976b6 | 6812 | bfd_boolean |
217aa764 | 6813 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6814 | { |
6815 | if (bfd_get_format (abfd) == bfd_object) | |
6816 | { | |
6817 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6818 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 6819 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
6820 | } |
6821 | ||
6822 | return _bfd_generic_close_and_cleanup (abfd); | |
6823 | } | |
6824 | ||
6825 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6826 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6827 | range-checking to interfere. There is nothing else to do in processing | |
6828 | this reloc. */ | |
6829 | ||
6830 | bfd_reloc_status_type | |
217aa764 AM |
6831 | _bfd_elf_rel_vtable_reloc_fn |
6832 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6833 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6834 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6835 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6836 | { |
6837 | return bfd_reloc_ok; | |
6838 | } | |
252b5132 RH |
6839 | \f |
6840 | /* Elf core file support. Much of this only works on native | |
6841 | toolchains, since we rely on knowing the | |
6842 | machine-dependent procfs structure in order to pick | |
c044fabd | 6843 | out details about the corefile. */ |
252b5132 RH |
6844 | |
6845 | #ifdef HAVE_SYS_PROCFS_H | |
6846 | # include <sys/procfs.h> | |
6847 | #endif | |
6848 | ||
c044fabd | 6849 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6850 | |
6851 | static int | |
217aa764 | 6852 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6853 | { |
6854 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6855 | + (elf_tdata (abfd)->core_pid)); | |
6856 | } | |
6857 | ||
252b5132 RH |
6858 | /* If there isn't a section called NAME, make one, using |
6859 | data from SECT. Note, this function will generate a | |
6860 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6861 | overwrite it. */ |
252b5132 | 6862 | |
b34976b6 | 6863 | static bfd_boolean |
217aa764 | 6864 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6865 | { |
c044fabd | 6866 | asection *sect2; |
252b5132 RH |
6867 | |
6868 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6869 | return TRUE; |
252b5132 RH |
6870 | |
6871 | sect2 = bfd_make_section (abfd, name); | |
6872 | if (sect2 == NULL) | |
b34976b6 | 6873 | return FALSE; |
252b5132 | 6874 | |
eea6121a | 6875 | sect2->size = sect->size; |
252b5132 RH |
6876 | sect2->filepos = sect->filepos; |
6877 | sect2->flags = sect->flags; | |
6878 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6879 | return TRUE; |
252b5132 RH |
6880 | } |
6881 | ||
bb0082d6 AM |
6882 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6883 | actually creates up to two pseudosections: | |
6884 | - For the single-threaded case, a section named NAME, unless | |
6885 | such a section already exists. | |
6886 | - For the multi-threaded case, a section named "NAME/PID", where | |
6887 | PID is elfcore_make_pid (abfd). | |
6888 | Both pseudosections have identical contents. */ | |
b34976b6 | 6889 | bfd_boolean |
217aa764 AM |
6890 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6891 | char *name, | |
6892 | size_t size, | |
6893 | ufile_ptr filepos) | |
bb0082d6 AM |
6894 | { |
6895 | char buf[100]; | |
6896 | char *threaded_name; | |
d4c88bbb | 6897 | size_t len; |
bb0082d6 AM |
6898 | asection *sect; |
6899 | ||
6900 | /* Build the section name. */ | |
6901 | ||
6902 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 6903 | len = strlen (buf) + 1; |
217aa764 | 6904 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 6905 | if (threaded_name == NULL) |
b34976b6 | 6906 | return FALSE; |
d4c88bbb | 6907 | memcpy (threaded_name, buf, len); |
bb0082d6 | 6908 | |
62f3bb11 | 6909 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 6910 | if (sect == NULL) |
b34976b6 | 6911 | return FALSE; |
eea6121a | 6912 | sect->size = size; |
bb0082d6 AM |
6913 | sect->filepos = filepos; |
6914 | sect->flags = SEC_HAS_CONTENTS; | |
6915 | sect->alignment_power = 2; | |
6916 | ||
936e320b | 6917 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
6918 | } |
6919 | ||
252b5132 | 6920 | /* prstatus_t exists on: |
4a938328 | 6921 | solaris 2.5+ |
252b5132 RH |
6922 | linux 2.[01] + glibc |
6923 | unixware 4.2 | |
6924 | */ | |
6925 | ||
6926 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 6927 | |
b34976b6 | 6928 | static bfd_boolean |
217aa764 | 6929 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6930 | { |
eea6121a | 6931 | size_t size; |
7ee38065 | 6932 | int offset; |
252b5132 | 6933 | |
4a938328 MS |
6934 | if (note->descsz == sizeof (prstatus_t)) |
6935 | { | |
6936 | prstatus_t prstat; | |
252b5132 | 6937 | |
eea6121a | 6938 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6939 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 6940 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 6941 | |
fa49d224 NC |
6942 | /* Do not overwrite the core signal if it |
6943 | has already been set by another thread. */ | |
6944 | if (elf_tdata (abfd)->core_signal == 0) | |
6945 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 6946 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 6947 | |
4a938328 MS |
6948 | /* pr_who exists on: |
6949 | solaris 2.5+ | |
6950 | unixware 4.2 | |
6951 | pr_who doesn't exist on: | |
6952 | linux 2.[01] | |
6953 | */ | |
252b5132 | 6954 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 6955 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 6956 | #endif |
4a938328 | 6957 | } |
7ee38065 | 6958 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
6959 | else if (note->descsz == sizeof (prstatus32_t)) |
6960 | { | |
6961 | /* 64-bit host, 32-bit corefile */ | |
6962 | prstatus32_t prstat; | |
6963 | ||
eea6121a | 6964 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6965 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
6966 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
6967 | ||
fa49d224 NC |
6968 | /* Do not overwrite the core signal if it |
6969 | has already been set by another thread. */ | |
6970 | if (elf_tdata (abfd)->core_signal == 0) | |
6971 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
6972 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
6973 | ||
6974 | /* pr_who exists on: | |
6975 | solaris 2.5+ | |
6976 | unixware 4.2 | |
6977 | pr_who doesn't exist on: | |
6978 | linux 2.[01] | |
6979 | */ | |
7ee38065 | 6980 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
6981 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
6982 | #endif | |
6983 | } | |
7ee38065 | 6984 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
6985 | else |
6986 | { | |
6987 | /* Fail - we don't know how to handle any other | |
6988 | note size (ie. data object type). */ | |
b34976b6 | 6989 | return TRUE; |
4a938328 | 6990 | } |
252b5132 | 6991 | |
bb0082d6 | 6992 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 6993 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 6994 | size, note->descpos + offset); |
252b5132 RH |
6995 | } |
6996 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
6997 | ||
bb0082d6 | 6998 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 6999 | static bfd_boolean |
217aa764 AM |
7000 | elfcore_make_note_pseudosection (bfd *abfd, |
7001 | char *name, | |
7002 | Elf_Internal_Note *note) | |
252b5132 | 7003 | { |
936e320b AM |
7004 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7005 | note->descsz, note->descpos); | |
252b5132 RH |
7006 | } |
7007 | ||
ff08c6bb JB |
7008 | /* There isn't a consistent prfpregset_t across platforms, |
7009 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7010 | data structure apart. */ |
7011 | ||
b34976b6 | 7012 | static bfd_boolean |
217aa764 | 7013 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7014 | { |
7015 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7016 | } | |
7017 | ||
ff08c6bb JB |
7018 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7019 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7020 | literally. */ | |
c044fabd | 7021 | |
b34976b6 | 7022 | static bfd_boolean |
217aa764 | 7023 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7024 | { |
7025 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7026 | } | |
7027 | ||
252b5132 | 7028 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7029 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7030 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7031 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7032 | #endif | |
252b5132 RH |
7033 | #endif |
7034 | ||
7035 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7036 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7037 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7038 | typedef psinfo32_t elfcore_psinfo32_t; |
7039 | #endif | |
252b5132 RH |
7040 | #endif |
7041 | ||
252b5132 RH |
7042 | /* return a malloc'ed copy of a string at START which is at |
7043 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7044 | the copy will always have a terminating '\0'. */ |
252b5132 | 7045 | |
936e320b | 7046 | char * |
217aa764 | 7047 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7048 | { |
dc810e39 | 7049 | char *dups; |
c044fabd | 7050 | char *end = memchr (start, '\0', max); |
dc810e39 | 7051 | size_t len; |
252b5132 RH |
7052 | |
7053 | if (end == NULL) | |
7054 | len = max; | |
7055 | else | |
7056 | len = end - start; | |
7057 | ||
217aa764 | 7058 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7059 | if (dups == NULL) |
252b5132 RH |
7060 | return NULL; |
7061 | ||
dc810e39 AM |
7062 | memcpy (dups, start, len); |
7063 | dups[len] = '\0'; | |
252b5132 | 7064 | |
dc810e39 | 7065 | return dups; |
252b5132 RH |
7066 | } |
7067 | ||
bb0082d6 | 7068 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7069 | static bfd_boolean |
217aa764 | 7070 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7071 | { |
4a938328 MS |
7072 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7073 | { | |
7074 | elfcore_psinfo_t psinfo; | |
252b5132 | 7075 | |
7ee38065 | 7076 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7077 | |
4a938328 | 7078 | elf_tdata (abfd)->core_program |
936e320b AM |
7079 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7080 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7081 | |
4a938328 | 7082 | elf_tdata (abfd)->core_command |
936e320b AM |
7083 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7084 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7085 | } |
7ee38065 | 7086 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7087 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7088 | { | |
7089 | /* 64-bit host, 32-bit corefile */ | |
7090 | elfcore_psinfo32_t psinfo; | |
7091 | ||
7ee38065 | 7092 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7093 | |
4a938328 | 7094 | elf_tdata (abfd)->core_program |
936e320b AM |
7095 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7096 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7097 | |
7098 | elf_tdata (abfd)->core_command | |
936e320b AM |
7099 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7100 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7101 | } |
7102 | #endif | |
7103 | ||
7104 | else | |
7105 | { | |
7106 | /* Fail - we don't know how to handle any other | |
7107 | note size (ie. data object type). */ | |
b34976b6 | 7108 | return TRUE; |
4a938328 | 7109 | } |
252b5132 RH |
7110 | |
7111 | /* Note that for some reason, a spurious space is tacked | |
7112 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7113 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7114 | |
7115 | { | |
c044fabd | 7116 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7117 | int n = strlen (command); |
7118 | ||
7119 | if (0 < n && command[n - 1] == ' ') | |
7120 | command[n - 1] = '\0'; | |
7121 | } | |
7122 | ||
b34976b6 | 7123 | return TRUE; |
252b5132 RH |
7124 | } |
7125 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7126 | ||
252b5132 | 7127 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7128 | static bfd_boolean |
217aa764 | 7129 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7130 | { |
f572a39d AM |
7131 | if (note->descsz == sizeof (pstatus_t) |
7132 | #if defined (HAVE_PXSTATUS_T) | |
7133 | || note->descsz == sizeof (pxstatus_t) | |
7134 | #endif | |
7135 | ) | |
4a938328 MS |
7136 | { |
7137 | pstatus_t pstat; | |
252b5132 | 7138 | |
4a938328 | 7139 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7140 | |
4a938328 MS |
7141 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7142 | } | |
7ee38065 | 7143 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7144 | else if (note->descsz == sizeof (pstatus32_t)) |
7145 | { | |
7146 | /* 64-bit host, 32-bit corefile */ | |
7147 | pstatus32_t pstat; | |
252b5132 | 7148 | |
4a938328 | 7149 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7150 | |
4a938328 MS |
7151 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7152 | } | |
7153 | #endif | |
252b5132 RH |
7154 | /* Could grab some more details from the "representative" |
7155 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7156 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7157 | |
b34976b6 | 7158 | return TRUE; |
252b5132 RH |
7159 | } |
7160 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7161 | ||
252b5132 | 7162 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7163 | static bfd_boolean |
217aa764 | 7164 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7165 | { |
7166 | lwpstatus_t lwpstat; | |
7167 | char buf[100]; | |
c044fabd | 7168 | char *name; |
d4c88bbb | 7169 | size_t len; |
c044fabd | 7170 | asection *sect; |
252b5132 | 7171 | |
f572a39d AM |
7172 | if (note->descsz != sizeof (lwpstat) |
7173 | #if defined (HAVE_LWPXSTATUS_T) | |
7174 | && note->descsz != sizeof (lwpxstatus_t) | |
7175 | #endif | |
7176 | ) | |
b34976b6 | 7177 | return TRUE; |
252b5132 RH |
7178 | |
7179 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7180 | ||
7181 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7182 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7183 | ||
c044fabd | 7184 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7185 | |
7186 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7187 | len = strlen (buf) + 1; |
217aa764 | 7188 | name = bfd_alloc (abfd, len); |
252b5132 | 7189 | if (name == NULL) |
b34976b6 | 7190 | return FALSE; |
d4c88bbb | 7191 | memcpy (name, buf, len); |
252b5132 | 7192 | |
62f3bb11 | 7193 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7194 | if (sect == NULL) |
b34976b6 | 7195 | return FALSE; |
252b5132 RH |
7196 | |
7197 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7198 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7199 | sect->filepos = note->descpos |
7200 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7201 | #endif | |
7202 | ||
7203 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7204 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7205 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7206 | #endif | |
7207 | ||
7208 | sect->flags = SEC_HAS_CONTENTS; | |
7209 | sect->alignment_power = 2; | |
7210 | ||
7211 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7212 | return FALSE; |
252b5132 RH |
7213 | |
7214 | /* Make a ".reg2/999" section */ | |
7215 | ||
7216 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7217 | len = strlen (buf) + 1; |
217aa764 | 7218 | name = bfd_alloc (abfd, len); |
252b5132 | 7219 | if (name == NULL) |
b34976b6 | 7220 | return FALSE; |
d4c88bbb | 7221 | memcpy (name, buf, len); |
252b5132 | 7222 | |
62f3bb11 | 7223 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7224 | if (sect == NULL) |
b34976b6 | 7225 | return FALSE; |
252b5132 RH |
7226 | |
7227 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7228 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7229 | sect->filepos = note->descpos |
7230 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7231 | #endif | |
7232 | ||
7233 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7234 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7235 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7236 | #endif | |
7237 | ||
7238 | sect->flags = SEC_HAS_CONTENTS; | |
7239 | sect->alignment_power = 2; | |
7240 | ||
936e320b | 7241 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7242 | } |
7243 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7244 | ||
16e9c715 | 7245 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7246 | static bfd_boolean |
217aa764 | 7247 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7248 | { |
7249 | char buf[30]; | |
c044fabd | 7250 | char *name; |
d4c88bbb | 7251 | size_t len; |
c044fabd | 7252 | asection *sect; |
16e9c715 NC |
7253 | win32_pstatus_t pstatus; |
7254 | ||
7255 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7256 | return TRUE; |
16e9c715 | 7257 | |
e8eab623 | 7258 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7259 | |
7260 | switch (pstatus.data_type) | |
16e9c715 NC |
7261 | { |
7262 | case NOTE_INFO_PROCESS: | |
7263 | /* FIXME: need to add ->core_command. */ | |
7264 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7265 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7266 | break; |
16e9c715 NC |
7267 | |
7268 | case NOTE_INFO_THREAD: | |
7269 | /* Make a ".reg/999" section. */ | |
1f170678 | 7270 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7271 | |
d4c88bbb | 7272 | len = strlen (buf) + 1; |
217aa764 | 7273 | name = bfd_alloc (abfd, len); |
16e9c715 | 7274 | if (name == NULL) |
b34976b6 | 7275 | return FALSE; |
c044fabd | 7276 | |
d4c88bbb | 7277 | memcpy (name, buf, len); |
16e9c715 | 7278 | |
62f3bb11 | 7279 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7280 | if (sect == NULL) |
b34976b6 | 7281 | return FALSE; |
c044fabd | 7282 | |
eea6121a | 7283 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7284 | sect->filepos = (note->descpos |
7285 | + offsetof (struct win32_pstatus, | |
7286 | data.thread_info.thread_context)); | |
16e9c715 NC |
7287 | sect->flags = SEC_HAS_CONTENTS; |
7288 | sect->alignment_power = 2; | |
7289 | ||
7290 | if (pstatus.data.thread_info.is_active_thread) | |
7291 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7292 | return FALSE; |
16e9c715 NC |
7293 | break; |
7294 | ||
7295 | case NOTE_INFO_MODULE: | |
7296 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7297 | sprintf (buf, ".module/%08lx", |
7298 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7299 | |
d4c88bbb | 7300 | len = strlen (buf) + 1; |
217aa764 | 7301 | name = bfd_alloc (abfd, len); |
16e9c715 | 7302 | if (name == NULL) |
b34976b6 | 7303 | return FALSE; |
c044fabd | 7304 | |
d4c88bbb | 7305 | memcpy (name, buf, len); |
252b5132 | 7306 | |
62f3bb11 | 7307 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7308 | |
16e9c715 | 7309 | if (sect == NULL) |
b34976b6 | 7310 | return FALSE; |
c044fabd | 7311 | |
eea6121a | 7312 | sect->size = note->descsz; |
16e9c715 NC |
7313 | sect->filepos = note->descpos; |
7314 | sect->flags = SEC_HAS_CONTENTS; | |
7315 | sect->alignment_power = 2; | |
7316 | break; | |
7317 | ||
7318 | default: | |
b34976b6 | 7319 | return TRUE; |
16e9c715 NC |
7320 | } |
7321 | ||
b34976b6 | 7322 | return TRUE; |
16e9c715 NC |
7323 | } |
7324 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7325 | |
b34976b6 | 7326 | static bfd_boolean |
217aa764 | 7327 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7328 | { |
9c5bfbb7 | 7329 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7330 | |
252b5132 RH |
7331 | switch (note->type) |
7332 | { | |
7333 | default: | |
b34976b6 | 7334 | return TRUE; |
252b5132 | 7335 | |
252b5132 | 7336 | case NT_PRSTATUS: |
bb0082d6 AM |
7337 | if (bed->elf_backend_grok_prstatus) |
7338 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7339 | return TRUE; |
bb0082d6 | 7340 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7341 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7342 | #else |
b34976b6 | 7343 | return TRUE; |
252b5132 RH |
7344 | #endif |
7345 | ||
7346 | #if defined (HAVE_PSTATUS_T) | |
7347 | case NT_PSTATUS: | |
7348 | return elfcore_grok_pstatus (abfd, note); | |
7349 | #endif | |
7350 | ||
7351 | #if defined (HAVE_LWPSTATUS_T) | |
7352 | case NT_LWPSTATUS: | |
7353 | return elfcore_grok_lwpstatus (abfd, note); | |
7354 | #endif | |
7355 | ||
7356 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7357 | return elfcore_grok_prfpreg (abfd, note); | |
7358 | ||
16e9c715 | 7359 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7360 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7361 | return elfcore_grok_win32pstatus (abfd, note); |
7362 | #endif | |
7363 | ||
c044fabd | 7364 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7365 | if (note->namesz == 6 |
7366 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7367 | return elfcore_grok_prxfpreg (abfd, note); |
7368 | else | |
b34976b6 | 7369 | return TRUE; |
ff08c6bb | 7370 | |
252b5132 RH |
7371 | case NT_PRPSINFO: |
7372 | case NT_PSINFO: | |
bb0082d6 AM |
7373 | if (bed->elf_backend_grok_psinfo) |
7374 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7375 | return TRUE; |
bb0082d6 | 7376 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7377 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7378 | #else |
b34976b6 | 7379 | return TRUE; |
252b5132 | 7380 | #endif |
3333a7c3 RM |
7381 | |
7382 | case NT_AUXV: | |
7383 | { | |
62f3bb11 | 7384 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7385 | |
7386 | if (sect == NULL) | |
7387 | return FALSE; | |
eea6121a | 7388 | sect->size = note->descsz; |
3333a7c3 RM |
7389 | sect->filepos = note->descpos; |
7390 | sect->flags = SEC_HAS_CONTENTS; | |
7391 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7392 | ||
7393 | return TRUE; | |
7394 | } | |
252b5132 RH |
7395 | } |
7396 | } | |
7397 | ||
b34976b6 | 7398 | static bfd_boolean |
217aa764 | 7399 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7400 | { |
7401 | char *cp; | |
7402 | ||
7403 | cp = strchr (note->namedata, '@'); | |
7404 | if (cp != NULL) | |
7405 | { | |
d2b64500 | 7406 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7407 | return TRUE; |
50b2bdb7 | 7408 | } |
b34976b6 | 7409 | return FALSE; |
50b2bdb7 AM |
7410 | } |
7411 | ||
b34976b6 | 7412 | static bfd_boolean |
217aa764 | 7413 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7414 | { |
7415 | ||
7416 | /* Signal number at offset 0x08. */ | |
7417 | elf_tdata (abfd)->core_signal | |
7418 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7419 | ||
7420 | /* Process ID at offset 0x50. */ | |
7421 | elf_tdata (abfd)->core_pid | |
7422 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7423 | ||
7424 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7425 | elf_tdata (abfd)->core_command | |
7426 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7427 | ||
7720ba9f MK |
7428 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7429 | note); | |
50b2bdb7 AM |
7430 | } |
7431 | ||
b34976b6 | 7432 | static bfd_boolean |
217aa764 | 7433 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7434 | { |
7435 | int lwp; | |
7436 | ||
7437 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7438 | elf_tdata (abfd)->core_lwpid = lwp; | |
7439 | ||
b4db1224 | 7440 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7441 | { |
7442 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7443 | find this note before any of the others, which is fine, | |
7444 | since the kernel writes this note out first when it | |
7445 | creates a core file. */ | |
47d9a591 | 7446 | |
50b2bdb7 AM |
7447 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7448 | } | |
7449 | ||
b4db1224 JT |
7450 | /* As of Jan 2002 there are no other machine-independent notes |
7451 | defined for NetBSD core files. If the note type is less | |
7452 | than the start of the machine-dependent note types, we don't | |
7453 | understand it. */ | |
47d9a591 | 7454 | |
b4db1224 | 7455 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7456 | return TRUE; |
50b2bdb7 AM |
7457 | |
7458 | ||
7459 | switch (bfd_get_arch (abfd)) | |
7460 | { | |
7461 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7462 | PT_GETFPREGS == mach+2. */ | |
7463 | ||
7464 | case bfd_arch_alpha: | |
7465 | case bfd_arch_sparc: | |
7466 | switch (note->type) | |
7467 | { | |
b4db1224 | 7468 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7469 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7470 | ||
b4db1224 | 7471 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7472 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7473 | ||
7474 | default: | |
b34976b6 | 7475 | return TRUE; |
50b2bdb7 AM |
7476 | } |
7477 | ||
7478 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7479 | PT_GETFPREGS == mach+3. */ | |
7480 | ||
7481 | default: | |
7482 | switch (note->type) | |
7483 | { | |
b4db1224 | 7484 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7485 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7486 | ||
b4db1224 | 7487 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7488 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7489 | ||
7490 | default: | |
b34976b6 | 7491 | return TRUE; |
50b2bdb7 AM |
7492 | } |
7493 | } | |
7494 | /* NOTREACHED */ | |
7495 | } | |
7496 | ||
07c6e936 | 7497 | static bfd_boolean |
217aa764 | 7498 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7499 | { |
7500 | void *ddata = note->descdata; | |
7501 | char buf[100]; | |
7502 | char *name; | |
7503 | asection *sect; | |
f8843e87 AM |
7504 | short sig; |
7505 | unsigned flags; | |
07c6e936 NC |
7506 | |
7507 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7508 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7509 | ||
f8843e87 AM |
7510 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7511 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7512 | ||
7513 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7514 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7515 | |
7516 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7517 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7518 | { | |
7519 | elf_tdata (abfd)->core_signal = sig; | |
7520 | elf_tdata (abfd)->core_lwpid = *tid; | |
7521 | } | |
07c6e936 | 7522 | |
f8843e87 AM |
7523 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7524 | do not come from signals so we make sure we set the current | |
7525 | thread just in case. */ | |
7526 | if (flags & 0x00000080) | |
7527 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7528 | |
7529 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7530 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7531 | |
217aa764 | 7532 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7533 | if (name == NULL) |
7534 | return FALSE; | |
7535 | strcpy (name, buf); | |
7536 | ||
62f3bb11 | 7537 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7538 | if (sect == NULL) |
7539 | return FALSE; | |
7540 | ||
eea6121a | 7541 | sect->size = note->descsz; |
07c6e936 NC |
7542 | sect->filepos = note->descpos; |
7543 | sect->flags = SEC_HAS_CONTENTS; | |
7544 | sect->alignment_power = 2; | |
7545 | ||
7546 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7547 | } | |
7548 | ||
7549 | static bfd_boolean | |
d69f560c KW |
7550 | elfcore_grok_nto_regs (bfd *abfd, |
7551 | Elf_Internal_Note *note, | |
7552 | pid_t tid, | |
7553 | char *base) | |
07c6e936 NC |
7554 | { |
7555 | char buf[100]; | |
7556 | char *name; | |
7557 | asection *sect; | |
7558 | ||
d69f560c | 7559 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7560 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7561 | |
217aa764 | 7562 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7563 | if (name == NULL) |
7564 | return FALSE; | |
7565 | strcpy (name, buf); | |
7566 | ||
62f3bb11 | 7567 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7568 | if (sect == NULL) |
7569 | return FALSE; | |
7570 | ||
eea6121a | 7571 | sect->size = note->descsz; |
07c6e936 NC |
7572 | sect->filepos = note->descpos; |
7573 | sect->flags = SEC_HAS_CONTENTS; | |
7574 | sect->alignment_power = 2; | |
7575 | ||
f8843e87 AM |
7576 | /* This is the current thread. */ |
7577 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7578 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7579 | |
7580 | return TRUE; | |
07c6e936 NC |
7581 | } |
7582 | ||
7583 | #define BFD_QNT_CORE_INFO 7 | |
7584 | #define BFD_QNT_CORE_STATUS 8 | |
7585 | #define BFD_QNT_CORE_GREG 9 | |
7586 | #define BFD_QNT_CORE_FPREG 10 | |
7587 | ||
7588 | static bfd_boolean | |
217aa764 | 7589 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7590 | { |
7591 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7592 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7593 | function. */ |
7594 | static pid_t tid = 1; | |
7595 | ||
7596 | switch (note->type) | |
7597 | { | |
d69f560c KW |
7598 | case BFD_QNT_CORE_INFO: |
7599 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7600 | case BFD_QNT_CORE_STATUS: | |
7601 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7602 | case BFD_QNT_CORE_GREG: | |
7603 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7604 | case BFD_QNT_CORE_FPREG: | |
7605 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7606 | default: | |
7607 | return TRUE; | |
07c6e936 NC |
7608 | } |
7609 | } | |
7610 | ||
7c76fa91 MS |
7611 | /* Function: elfcore_write_note |
7612 | ||
47d9a591 | 7613 | Inputs: |
7c76fa91 MS |
7614 | buffer to hold note |
7615 | name of note | |
7616 | type of note | |
7617 | data for note | |
7618 | size of data for note | |
7619 | ||
7620 | Return: | |
7621 | End of buffer containing note. */ | |
7622 | ||
7623 | char * | |
217aa764 AM |
7624 | elfcore_write_note (bfd *abfd, |
7625 | char *buf, | |
7626 | int *bufsiz, | |
7627 | const char *name, | |
7628 | int type, | |
7629 | const void *input, | |
7630 | int size) | |
7c76fa91 MS |
7631 | { |
7632 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7633 | size_t namesz; |
7634 | size_t pad; | |
7635 | size_t newspace; | |
7c76fa91 MS |
7636 | char *p, *dest; |
7637 | ||
d4c88bbb AM |
7638 | namesz = 0; |
7639 | pad = 0; | |
7640 | if (name != NULL) | |
7641 | { | |
9c5bfbb7 | 7642 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7643 | |
7644 | namesz = strlen (name) + 1; | |
7645 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7646 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7647 | } |
7648 | ||
5de3bf90 | 7649 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7650 | |
7c76fa91 MS |
7651 | p = realloc (buf, *bufsiz + newspace); |
7652 | dest = p + *bufsiz; | |
7653 | *bufsiz += newspace; | |
7654 | xnp = (Elf_External_Note *) dest; | |
7655 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7656 | H_PUT_32 (abfd, size, xnp->descsz); | |
7657 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7658 | dest = xnp->name; |
7659 | if (name != NULL) | |
7660 | { | |
7661 | memcpy (dest, name, namesz); | |
7662 | dest += namesz; | |
7663 | while (pad != 0) | |
7664 | { | |
7665 | *dest++ = '\0'; | |
7666 | --pad; | |
7667 | } | |
7668 | } | |
7669 | memcpy (dest, input, size); | |
7c76fa91 MS |
7670 | return p; |
7671 | } | |
7672 | ||
7673 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7674 | char * | |
217aa764 AM |
7675 | elfcore_write_prpsinfo (bfd *abfd, |
7676 | char *buf, | |
7677 | int *bufsiz, | |
7678 | const char *fname, | |
7679 | const char *psargs) | |
7c76fa91 MS |
7680 | { |
7681 | int note_type; | |
7682 | char *note_name = "CORE"; | |
7683 | ||
7684 | #if defined (HAVE_PSINFO_T) | |
7685 | psinfo_t data; | |
7686 | note_type = NT_PSINFO; | |
7687 | #else | |
7688 | prpsinfo_t data; | |
7689 | note_type = NT_PRPSINFO; | |
7690 | #endif | |
7691 | ||
7692 | memset (&data, 0, sizeof (data)); | |
7693 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7694 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7695 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7696 | note_name, note_type, &data, sizeof (data)); |
7697 | } | |
7698 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7699 | ||
7700 | #if defined (HAVE_PRSTATUS_T) | |
7701 | char * | |
217aa764 AM |
7702 | elfcore_write_prstatus (bfd *abfd, |
7703 | char *buf, | |
7704 | int *bufsiz, | |
7705 | long pid, | |
7706 | int cursig, | |
7707 | const void *gregs) | |
7c76fa91 MS |
7708 | { |
7709 | prstatus_t prstat; | |
7710 | char *note_name = "CORE"; | |
7711 | ||
7712 | memset (&prstat, 0, sizeof (prstat)); | |
7713 | prstat.pr_pid = pid; | |
7714 | prstat.pr_cursig = cursig; | |
c106e334 | 7715 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7716 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7717 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7718 | } | |
7719 | #endif /* HAVE_PRSTATUS_T */ | |
7720 | ||
51316059 MS |
7721 | #if defined (HAVE_LWPSTATUS_T) |
7722 | char * | |
217aa764 AM |
7723 | elfcore_write_lwpstatus (bfd *abfd, |
7724 | char *buf, | |
7725 | int *bufsiz, | |
7726 | long pid, | |
7727 | int cursig, | |
7728 | const void *gregs) | |
51316059 MS |
7729 | { |
7730 | lwpstatus_t lwpstat; | |
7731 | char *note_name = "CORE"; | |
7732 | ||
7733 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7734 | lwpstat.pr_lwpid = pid >> 16; | |
7735 | lwpstat.pr_cursig = cursig; | |
7736 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7737 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7738 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7739 | #if !defined(gregs) | |
7740 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7741 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7742 | #else | |
7743 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7744 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7745 | #endif | |
7746 | #endif | |
47d9a591 | 7747 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7748 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7749 | } | |
7750 | #endif /* HAVE_LWPSTATUS_T */ | |
7751 | ||
7c76fa91 MS |
7752 | #if defined (HAVE_PSTATUS_T) |
7753 | char * | |
217aa764 AM |
7754 | elfcore_write_pstatus (bfd *abfd, |
7755 | char *buf, | |
7756 | int *bufsiz, | |
7757 | long pid, | |
7758 | int cursig, | |
7759 | const void *gregs) | |
7c76fa91 MS |
7760 | { |
7761 | pstatus_t pstat; | |
7762 | char *note_name = "CORE"; | |
7763 | ||
51316059 MS |
7764 | memset (&pstat, 0, sizeof (pstat)); |
7765 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7766 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7767 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7768 | return buf; | |
7c76fa91 MS |
7769 | } |
7770 | #endif /* HAVE_PSTATUS_T */ | |
7771 | ||
7772 | char * | |
217aa764 AM |
7773 | elfcore_write_prfpreg (bfd *abfd, |
7774 | char *buf, | |
7775 | int *bufsiz, | |
7776 | const void *fpregs, | |
7777 | int size) | |
7c76fa91 MS |
7778 | { |
7779 | char *note_name = "CORE"; | |
47d9a591 | 7780 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7781 | note_name, NT_FPREGSET, fpregs, size); |
7782 | } | |
7783 | ||
7784 | char * | |
217aa764 AM |
7785 | elfcore_write_prxfpreg (bfd *abfd, |
7786 | char *buf, | |
7787 | int *bufsiz, | |
7788 | const void *xfpregs, | |
7789 | int size) | |
7c76fa91 MS |
7790 | { |
7791 | char *note_name = "LINUX"; | |
47d9a591 | 7792 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7793 | note_name, NT_PRXFPREG, xfpregs, size); |
7794 | } | |
7795 | ||
b34976b6 | 7796 | static bfd_boolean |
217aa764 | 7797 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7798 | { |
c044fabd KH |
7799 | char *buf; |
7800 | char *p; | |
252b5132 RH |
7801 | |
7802 | if (size <= 0) | |
b34976b6 | 7803 | return TRUE; |
252b5132 | 7804 | |
dc810e39 | 7805 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7806 | return FALSE; |
252b5132 | 7807 | |
dc810e39 | 7808 | buf = bfd_malloc (size); |
252b5132 | 7809 | if (buf == NULL) |
b34976b6 | 7810 | return FALSE; |
252b5132 | 7811 | |
dc810e39 | 7812 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7813 | { |
7814 | error: | |
7815 | free (buf); | |
b34976b6 | 7816 | return FALSE; |
252b5132 RH |
7817 | } |
7818 | ||
7819 | p = buf; | |
7820 | while (p < buf + size) | |
7821 | { | |
c044fabd KH |
7822 | /* FIXME: bad alignment assumption. */ |
7823 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7824 | Elf_Internal_Note in; |
7825 | ||
dc810e39 | 7826 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7827 | |
dc810e39 | 7828 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7829 | in.namedata = xnp->name; |
7830 | ||
dc810e39 | 7831 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7832 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7833 | in.descpos = offset + (in.descdata - buf); | |
7834 | ||
50b2bdb7 AM |
7835 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7836 | { | |
7837 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7838 | goto error; | |
7839 | } | |
07c6e936 NC |
7840 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7841 | { | |
7842 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7843 | goto error; | |
7844 | } | |
50b2bdb7 AM |
7845 | else |
7846 | { | |
7847 | if (! elfcore_grok_note (abfd, &in)) | |
7848 | goto error; | |
7849 | } | |
252b5132 RH |
7850 | |
7851 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7852 | } | |
7853 | ||
7854 | free (buf); | |
b34976b6 | 7855 | return TRUE; |
252b5132 | 7856 | } |
98d8431c JB |
7857 | \f |
7858 | /* Providing external access to the ELF program header table. */ | |
7859 | ||
7860 | /* Return an upper bound on the number of bytes required to store a | |
7861 | copy of ABFD's program header table entries. Return -1 if an error | |
7862 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7863 | |
98d8431c | 7864 | long |
217aa764 | 7865 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7866 | { |
7867 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7868 | { | |
7869 | bfd_set_error (bfd_error_wrong_format); | |
7870 | return -1; | |
7871 | } | |
7872 | ||
936e320b | 7873 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7874 | } |
7875 | ||
98d8431c JB |
7876 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7877 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7878 | defined in include/elf/internal.h. To find out how large the | |
7879 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7880 | ||
7881 | Return the number of program header table entries read, or -1 if an | |
7882 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7883 | |
98d8431c | 7884 | int |
217aa764 | 7885 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7886 | { |
7887 | int num_phdrs; | |
7888 | ||
7889 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7890 | { | |
7891 | bfd_set_error (bfd_error_wrong_format); | |
7892 | return -1; | |
7893 | } | |
7894 | ||
7895 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7896 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7897 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7898 | ||
7899 | return num_phdrs; | |
7900 | } | |
ae4221d7 L |
7901 | |
7902 | void | |
217aa764 | 7903 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 7904 | { |
d3b05f8d | 7905 | #ifdef BFD64 |
ae4221d7 L |
7906 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7907 | ||
7908 | i_ehdrp = elf_elfheader (abfd); | |
7909 | if (i_ehdrp == NULL) | |
7910 | sprintf_vma (buf, value); | |
7911 | else | |
7912 | { | |
7913 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7914 | { |
ae4221d7 | 7915 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7916 | sprintf (buf, "%016lx", value); |
ae4221d7 | 7917 | #else |
cc55aec9 AM |
7918 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
7919 | _bfd_int64_low (value)); | |
ae4221d7 | 7920 | #endif |
cc55aec9 | 7921 | } |
ae4221d7 L |
7922 | else |
7923 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
7924 | } | |
d3b05f8d L |
7925 | #else |
7926 | sprintf_vma (buf, value); | |
7927 | #endif | |
ae4221d7 L |
7928 | } |
7929 | ||
7930 | void | |
217aa764 | 7931 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 7932 | { |
d3b05f8d | 7933 | #ifdef BFD64 |
ae4221d7 L |
7934 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7935 | ||
7936 | i_ehdrp = elf_elfheader (abfd); | |
7937 | if (i_ehdrp == NULL) | |
7938 | fprintf_vma ((FILE *) stream, value); | |
7939 | else | |
7940 | { | |
7941 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7942 | { |
ae4221d7 | 7943 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7944 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 7945 | #else |
cc55aec9 AM |
7946 | fprintf ((FILE *) stream, "%08lx%08lx", |
7947 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 7948 | #endif |
cc55aec9 | 7949 | } |
ae4221d7 L |
7950 | else |
7951 | fprintf ((FILE *) stream, "%08lx", | |
7952 | (unsigned long) (value & 0xffffffff)); | |
7953 | } | |
d3b05f8d L |
7954 | #else |
7955 | fprintf_vma ((FILE *) stream, value); | |
7956 | #endif | |
ae4221d7 | 7957 | } |
db6751f2 JJ |
7958 | |
7959 | enum elf_reloc_type_class | |
217aa764 | 7960 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
7961 | { |
7962 | return reloc_class_normal; | |
7963 | } | |
f8df10f4 | 7964 | |
47d9a591 | 7965 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
7966 | relocation against a local symbol. */ |
7967 | ||
7968 | bfd_vma | |
217aa764 AM |
7969 | _bfd_elf_rela_local_sym (bfd *abfd, |
7970 | Elf_Internal_Sym *sym, | |
8517fae7 | 7971 | asection **psec, |
217aa764 | 7972 | Elf_Internal_Rela *rel) |
f8df10f4 | 7973 | { |
8517fae7 | 7974 | asection *sec = *psec; |
f8df10f4 JJ |
7975 | bfd_vma relocation; |
7976 | ||
7977 | relocation = (sec->output_section->vma | |
7978 | + sec->output_offset | |
7979 | + sym->st_value); | |
7980 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 7981 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 7982 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 7983 | { |
f8df10f4 | 7984 | rel->r_addend = |
8517fae7 | 7985 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 7986 | elf_section_data (sec)->sec_info, |
753731ee AM |
7987 | sym->st_value + rel->r_addend); |
7988 | if (sec != *psec) | |
7989 | { | |
7990 | /* If we have changed the section, and our original section is | |
7991 | marked with SEC_EXCLUDE, it means that the original | |
7992 | SEC_MERGE section has been completely subsumed in some | |
7993 | other SEC_MERGE section. In this case, we need to leave | |
7994 | some info around for --emit-relocs. */ | |
7995 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7996 | sec->kept_section = *psec; | |
7997 | sec = *psec; | |
7998 | } | |
8517fae7 AM |
7999 | rel->r_addend -= relocation; |
8000 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8001 | } |
8002 | return relocation; | |
8003 | } | |
c629eae0 JJ |
8004 | |
8005 | bfd_vma | |
217aa764 AM |
8006 | _bfd_elf_rel_local_sym (bfd *abfd, |
8007 | Elf_Internal_Sym *sym, | |
8008 | asection **psec, | |
8009 | bfd_vma addend) | |
47d9a591 | 8010 | { |
c629eae0 JJ |
8011 | asection *sec = *psec; |
8012 | ||
68bfbfcc | 8013 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8014 | return sym->st_value + addend; |
8015 | ||
8016 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8017 | elf_section_data (sec)->sec_info, |
753731ee | 8018 | sym->st_value + addend); |
c629eae0 JJ |
8019 | } |
8020 | ||
8021 | bfd_vma | |
217aa764 | 8022 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8023 | struct bfd_link_info *info, |
217aa764 AM |
8024 | asection *sec, |
8025 | bfd_vma offset) | |
c629eae0 | 8026 | { |
68bfbfcc | 8027 | switch (sec->sec_info_type) |
65765700 JJ |
8028 | { |
8029 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8030 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8031 | offset); | |
65765700 | 8032 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8033 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8034 | default: |
8035 | return offset; | |
8036 | } | |
c629eae0 | 8037 | } |
3333a7c3 RM |
8038 | \f |
8039 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8040 | reconstruct an ELF file by reading the segments out of remote memory | |
8041 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8042 | points to. If not null, *LOADBASEP is filled in with the difference | |
8043 | between the VMAs from which the segments were read, and the VMAs the | |
8044 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8045 | ||
8046 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8047 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8048 | should return zero on success or an `errno' code on failure. TEMPL must | |
8049 | be a BFD for an ELF target with the word size and byte order found in | |
8050 | the remote memory. */ | |
8051 | ||
8052 | bfd * | |
217aa764 AM |
8053 | bfd_elf_bfd_from_remote_memory |
8054 | (bfd *templ, | |
8055 | bfd_vma ehdr_vma, | |
8056 | bfd_vma *loadbasep, | |
f075ee0c | 8057 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8058 | { |
8059 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8060 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8061 | } | |
4c45e5c9 JJ |
8062 | \f |
8063 | long | |
c9727e01 AM |
8064 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8065 | long symcount ATTRIBUTE_UNUSED, | |
8066 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8067 | long dynsymcount, |
c9727e01 AM |
8068 | asymbol **dynsyms, |
8069 | asymbol **ret) | |
4c45e5c9 JJ |
8070 | { |
8071 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8072 | asection *relplt; | |
8073 | asymbol *s; | |
8074 | const char *relplt_name; | |
8075 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8076 | arelent *p; | |
8077 | long count, i, n; | |
8078 | size_t size; | |
8079 | Elf_Internal_Shdr *hdr; | |
8080 | char *names; | |
8081 | asection *plt; | |
8082 | ||
8615f3f2 AM |
8083 | *ret = NULL; |
8084 | ||
90e3cdf2 JJ |
8085 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8086 | return 0; | |
8087 | ||
8615f3f2 AM |
8088 | if (dynsymcount <= 0) |
8089 | return 0; | |
8090 | ||
4c45e5c9 JJ |
8091 | if (!bed->plt_sym_val) |
8092 | return 0; | |
8093 | ||
8094 | relplt_name = bed->relplt_name; | |
8095 | if (relplt_name == NULL) | |
8096 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8097 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8098 | if (relplt == NULL) | |
8099 | return 0; | |
8100 | ||
8101 | hdr = &elf_section_data (relplt)->this_hdr; | |
8102 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8103 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8104 | return 0; | |
8105 | ||
8106 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8107 | if (plt == NULL) | |
8108 | return 0; | |
8109 | ||
8110 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8111 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8112 | return -1; |
8113 | ||
eea6121a | 8114 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8115 | size = count * sizeof (asymbol); |
8116 | p = relplt->relocation; | |
8117 | for (i = 0; i < count; i++, s++, p++) | |
8118 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8119 | ||
8120 | s = *ret = bfd_malloc (size); | |
8121 | if (s == NULL) | |
8122 | return -1; | |
8123 | ||
8124 | names = (char *) (s + count); | |
8125 | p = relplt->relocation; | |
8126 | n = 0; | |
8127 | for (i = 0; i < count; i++, s++, p++) | |
8128 | { | |
8129 | size_t len; | |
8130 | bfd_vma addr; | |
8131 | ||
8132 | addr = bed->plt_sym_val (i, plt, p); | |
8133 | if (addr == (bfd_vma) -1) | |
8134 | continue; | |
8135 | ||
8136 | *s = **p->sym_ptr_ptr; | |
8137 | s->section = plt; | |
8138 | s->value = addr - plt->vma; | |
8139 | s->name = names; | |
8140 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8141 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8142 | names += len; | |
8143 | memcpy (names, "@plt", sizeof ("@plt")); | |
8144 | names += sizeof ("@plt"); | |
8145 | ++n; | |
8146 | } | |
8147 | ||
8148 | return n; | |
8149 | } | |
3d7f7666 L |
8150 | |
8151 | /* Sort symbol by binding and section. We want to put definitions | |
8152 | sorted by section at the beginning. */ | |
8153 | ||
8154 | static int | |
8155 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8156 | { | |
8157 | const Elf_Internal_Sym *s1; | |
8158 | const Elf_Internal_Sym *s2; | |
8159 | int shndx; | |
8160 | ||
8161 | /* Make sure that undefined symbols are at the end. */ | |
8162 | s1 = (const Elf_Internal_Sym *) arg1; | |
8163 | if (s1->st_shndx == SHN_UNDEF) | |
8164 | return 1; | |
8165 | s2 = (const Elf_Internal_Sym *) arg2; | |
8166 | if (s2->st_shndx == SHN_UNDEF) | |
8167 | return -1; | |
8168 | ||
8169 | /* Sorted by section index. */ | |
8170 | shndx = s1->st_shndx - s2->st_shndx; | |
8171 | if (shndx != 0) | |
8172 | return shndx; | |
8173 | ||
8174 | /* Sorted by binding. */ | |
8175 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8176 | } | |
8177 | ||
8178 | struct elf_symbol | |
8179 | { | |
8180 | Elf_Internal_Sym *sym; | |
8181 | const char *name; | |
8182 | }; | |
8183 | ||
8184 | static int | |
8185 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8186 | { | |
8187 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8188 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8189 | return strcmp (s1->name, s2->name); | |
8190 | } | |
8191 | ||
8192 | /* Check if 2 sections define the same set of local and global | |
8193 | symbols. */ | |
8194 | ||
8195 | bfd_boolean | |
8196 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8197 | { | |
8198 | bfd *bfd1, *bfd2; | |
8199 | const struct elf_backend_data *bed1, *bed2; | |
8200 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8201 | bfd_size_type symcount1, symcount2; | |
8202 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8203 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8204 | Elf_Internal_Sym *isymend; | |
8205 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8206 | bfd_size_type count1, count2, i; | |
8207 | int shndx1, shndx2; | |
8208 | bfd_boolean result; | |
8209 | ||
8210 | bfd1 = sec1->owner; | |
8211 | bfd2 = sec2->owner; | |
8212 | ||
8213 | /* If both are .gnu.linkonce sections, they have to have the same | |
8214 | section name. */ | |
8215 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8216 | sizeof ".gnu.linkonce" - 1) == 0 | |
8217 | && strncmp (sec2->name, ".gnu.linkonce", | |
8218 | sizeof ".gnu.linkonce" - 1) == 0) | |
8219 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8220 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8221 | ||
8222 | /* Both sections have to be in ELF. */ | |
8223 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8224 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8225 | return FALSE; | |
8226 | ||
8227 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8228 | return FALSE; | |
8229 | ||
8230 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8231 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8232 | { | |
8233 | /* If both are members of section groups, they have to have the | |
8234 | same group name. */ | |
8235 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8236 | return FALSE; | |
8237 | } | |
8238 | ||
8239 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8240 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8241 | if (shndx1 == -1 || shndx2 == -1) | |
8242 | return FALSE; | |
8243 | ||
8244 | bed1 = get_elf_backend_data (bfd1); | |
8245 | bed2 = get_elf_backend_data (bfd2); | |
8246 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8247 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8248 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8249 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8250 | ||
8251 | if (symcount1 == 0 || symcount2 == 0) | |
8252 | return FALSE; | |
8253 | ||
8254 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8255 | NULL, NULL, NULL); | |
8256 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8257 | NULL, NULL, NULL); | |
8258 | ||
8259 | result = FALSE; | |
8260 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8261 | goto done; | |
8262 | ||
8263 | /* Sort symbols by binding and section. Global definitions are at | |
8264 | the beginning. */ | |
8265 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8266 | elf_sort_elf_symbol); | |
8267 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8268 | elf_sort_elf_symbol); | |
8269 | ||
8270 | /* Count definitions in the section. */ | |
8271 | count1 = 0; | |
8272 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8273 | isym < isymend; isym++) | |
8274 | { | |
8275 | if (isym->st_shndx == (unsigned int) shndx1) | |
8276 | { | |
8277 | if (count1 == 0) | |
8278 | isymstart1 = isym; | |
8279 | count1++; | |
8280 | } | |
8281 | ||
8282 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8283 | break; | |
8284 | } | |
8285 | ||
8286 | count2 = 0; | |
8287 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8288 | isym < isymend; isym++) | |
8289 | { | |
8290 | if (isym->st_shndx == (unsigned int) shndx2) | |
8291 | { | |
8292 | if (count2 == 0) | |
8293 | isymstart2 = isym; | |
8294 | count2++; | |
8295 | } | |
8296 | ||
8297 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8298 | break; | |
8299 | } | |
8300 | ||
8301 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8302 | goto done; | |
8303 | ||
8304 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8305 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8306 | ||
8307 | if (symtable1 == NULL || symtable2 == NULL) | |
8308 | goto done; | |
8309 | ||
8310 | symp = symtable1; | |
8311 | for (isym = isymstart1, isymend = isym + count1; | |
8312 | isym < isymend; isym++) | |
8313 | { | |
8314 | symp->sym = isym; | |
8315 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8316 | hdr1->sh_link, | |
8317 | isym->st_name); | |
8318 | symp++; | |
8319 | } | |
8320 | ||
8321 | symp = symtable2; | |
8322 | for (isym = isymstart2, isymend = isym + count1; | |
8323 | isym < isymend; isym++) | |
8324 | { | |
8325 | symp->sym = isym; | |
8326 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8327 | hdr2->sh_link, | |
8328 | isym->st_name); | |
8329 | symp++; | |
8330 | } | |
8331 | ||
8332 | /* Sort symbol by name. */ | |
8333 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8334 | elf_sym_name_compare); | |
8335 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8336 | elf_sym_name_compare); | |
8337 | ||
8338 | for (i = 0; i < count1; i++) | |
8339 | /* Two symbols must have the same binding, type and name. */ | |
8340 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8341 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8342 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8343 | goto done; | |
8344 | ||
8345 | result = TRUE; | |
8346 | ||
8347 | done: | |
8348 | if (symtable1) | |
8349 | free (symtable1); | |
8350 | if (symtable2) | |
8351 | free (symtable2); | |
8352 | if (isymbuf1) | |
8353 | free (isymbuf1); | |
8354 | if (isymbuf2) | |
8355 | free (isymbuf2); | |
8356 | ||
8357 | return result; | |
8358 | } |