Commit | Line | Data |
---|---|---|
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; | |
5982e3c7 | 454 | unsigned int i; |
b885599b | 455 | |
5982e3c7 NC |
456 | if (ghdr == NULL) |
457 | return NULL; | |
458 | ||
459 | /* If this section is linked to by other sections then it is a symbol or | |
460 | string section which is masquerading as a group. This is a bad thing, | |
461 | and if we carry on to the call to bfd_section_from_shdr below we will | |
462 | enter an infinite loop. So check now and break out if we detect this | |
463 | case. See: | |
464 | http://sources.redhat.com/ml/binutils/2005-05/msg00421.html | |
465 | for a report of a case that tirggers this code. */ | |
466 | for (i = elf_numsections (abfd); i--;) | |
467 | if (elf_elfsections (abfd) [elf_elfsections (abfd) [i]->sh_link] == ghdr) | |
468 | return NULL; | |
469 | ||
470 | /* Next we need to ensure the symbol table is available. */ | |
b885599b AM |
471 | if (! bfd_section_from_shdr (abfd, ghdr->sh_link)) |
472 | return NULL; | |
473 | ||
9dce4196 AM |
474 | /* Go read the symbol. */ |
475 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
476 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
477 | &isym, esym, &eshndx) == NULL) | |
b885599b | 478 | return NULL; |
9dce4196 | 479 | |
26c61ae5 | 480 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
481 | } |
482 | ||
dbb410c3 AM |
483 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
484 | ||
b34976b6 | 485 | static bfd_boolean |
217aa764 | 486 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
487 | { |
488 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
489 | ||
490 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
491 | is set to -1 if there are no SHT_GROUP sections. */ | |
492 | if (num_group == 0) | |
493 | { | |
494 | unsigned int i, shnum; | |
495 | ||
496 | /* First count the number of groups. If we have a SHT_GROUP | |
497 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 498 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
499 | num_group = 0; |
500 | for (i = 0; i < shnum; i++) | |
501 | { | |
502 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
503 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
504 | num_group += 1; | |
505 | } | |
506 | ||
507 | if (num_group == 0) | |
20dbb49d L |
508 | { |
509 | num_group = (unsigned) -1; | |
510 | elf_tdata (abfd)->num_group = num_group; | |
511 | } | |
512 | else | |
dbb410c3 AM |
513 | { |
514 | /* We keep a list of elf section headers for group sections, | |
515 | so we can find them quickly. */ | |
20dbb49d L |
516 | bfd_size_type amt; |
517 | ||
518 | elf_tdata (abfd)->num_group = num_group; | |
519 | amt = num_group * sizeof (Elf_Internal_Shdr *); | |
dbb410c3 AM |
520 | elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt); |
521 | if (elf_tdata (abfd)->group_sect_ptr == NULL) | |
b34976b6 | 522 | return FALSE; |
dbb410c3 AM |
523 | |
524 | num_group = 0; | |
525 | for (i = 0; i < shnum; i++) | |
526 | { | |
527 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
528 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
529 | { | |
973ffd63 | 530 | unsigned char *src; |
dbb410c3 AM |
531 | Elf_Internal_Group *dest; |
532 | ||
533 | /* Add to list of sections. */ | |
534 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
535 | num_group += 1; | |
536 | ||
537 | /* Read the raw contents. */ | |
538 | BFD_ASSERT (sizeof (*dest) >= 4); | |
539 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
540 | shdr->contents = bfd_alloc (abfd, amt); | |
541 | if (shdr->contents == NULL | |
542 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
543 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
544 | != shdr->sh_size)) | |
b34976b6 | 545 | return FALSE; |
dbb410c3 AM |
546 | |
547 | /* Translate raw contents, a flag word followed by an | |
548 | array of elf section indices all in target byte order, | |
549 | to the flag word followed by an array of elf section | |
550 | pointers. */ | |
551 | src = shdr->contents + shdr->sh_size; | |
552 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
553 | while (1) | |
554 | { | |
555 | unsigned int idx; | |
556 | ||
557 | src -= 4; | |
558 | --dest; | |
559 | idx = H_GET_32 (abfd, src); | |
560 | if (src == shdr->contents) | |
561 | { | |
562 | dest->flags = idx; | |
b885599b AM |
563 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
564 | shdr->bfd_section->flags | |
565 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
566 | break; |
567 | } | |
568 | if (idx >= shnum) | |
569 | { | |
570 | ((*_bfd_error_handler) | |
d003868e | 571 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
572 | idx = 0; |
573 | } | |
574 | dest->shdr = elf_elfsections (abfd)[idx]; | |
575 | } | |
576 | } | |
577 | } | |
578 | } | |
579 | } | |
580 | ||
581 | if (num_group != (unsigned) -1) | |
582 | { | |
583 | unsigned int i; | |
584 | ||
585 | for (i = 0; i < num_group; i++) | |
586 | { | |
587 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
588 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
589 | unsigned int n_elt = shdr->sh_size / 4; | |
590 | ||
591 | /* Look through this group's sections to see if current | |
592 | section is a member. */ | |
593 | while (--n_elt != 0) | |
594 | if ((++idx)->shdr == hdr) | |
595 | { | |
e0e8c97f | 596 | asection *s = NULL; |
dbb410c3 AM |
597 | |
598 | /* We are a member of this group. Go looking through | |
599 | other members to see if any others are linked via | |
600 | next_in_group. */ | |
601 | idx = (Elf_Internal_Group *) shdr->contents; | |
602 | n_elt = shdr->sh_size / 4; | |
603 | while (--n_elt != 0) | |
604 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 605 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
606 | break; |
607 | if (n_elt != 0) | |
608 | { | |
dbb410c3 AM |
609 | /* Snarf the group name from other member, and |
610 | insert current section in circular list. */ | |
945906ff AM |
611 | elf_group_name (newsect) = elf_group_name (s); |
612 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
613 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
614 | } |
615 | else | |
616 | { | |
dbb410c3 AM |
617 | const char *gname; |
618 | ||
b885599b AM |
619 | gname = group_signature (abfd, shdr); |
620 | if (gname == NULL) | |
b34976b6 | 621 | return FALSE; |
945906ff | 622 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
623 | |
624 | /* Start a circular list with one element. */ | |
945906ff | 625 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 626 | } |
b885599b | 627 | |
9dce4196 AM |
628 | /* If the group section has been created, point to the |
629 | new member. */ | |
dbb410c3 | 630 | if (shdr->bfd_section != NULL) |
945906ff | 631 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 632 | |
dbb410c3 AM |
633 | i = num_group - 1; |
634 | break; | |
635 | } | |
636 | } | |
637 | } | |
638 | ||
945906ff | 639 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 640 | { |
d003868e AM |
641 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
642 | abfd, newsect); | |
dbb410c3 | 643 | } |
b34976b6 | 644 | return TRUE; |
dbb410c3 AM |
645 | } |
646 | ||
3d7f7666 L |
647 | bfd_boolean |
648 | _bfd_elf_setup_group_pointers (bfd *abfd) | |
649 | { | |
650 | unsigned int i; | |
651 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
652 | bfd_boolean result = TRUE; | |
653 | ||
654 | if (num_group == (unsigned) -1) | |
655 | return result; | |
656 | ||
657 | for (i = 0; i < num_group; i++) | |
658 | { | |
659 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
660 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
661 | unsigned int n_elt = shdr->sh_size / 4; | |
662 | ||
663 | while (--n_elt != 0) | |
664 | if ((++idx)->shdr->bfd_section) | |
665 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
666 | else if (idx->shdr->sh_type == SHT_RELA | |
667 | || idx->shdr->sh_type == SHT_REL) | |
668 | /* We won't include relocation sections in section groups in | |
669 | output object files. We adjust the group section size here | |
670 | so that relocatable link will work correctly when | |
671 | relocation sections are in section group in input object | |
672 | files. */ | |
673 | shdr->bfd_section->size -= 4; | |
674 | else | |
675 | { | |
676 | /* There are some unknown sections in the group. */ | |
677 | (*_bfd_error_handler) | |
d003868e AM |
678 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
679 | abfd, | |
3d7f7666 | 680 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
681 | bfd_elf_string_from_elf_section (abfd, |
682 | (elf_elfheader (abfd) | |
683 | ->e_shstrndx), | |
684 | idx->shdr->sh_name), | |
3d7f7666 L |
685 | shdr->bfd_section->name); |
686 | result = FALSE; | |
687 | } | |
688 | } | |
689 | return result; | |
690 | } | |
691 | ||
72adc230 AM |
692 | bfd_boolean |
693 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
694 | { | |
695 | return elf_next_in_group (sec) != NULL; | |
696 | } | |
697 | ||
252b5132 RH |
698 | /* Make a BFD section from an ELF section. We store a pointer to the |
699 | BFD section in the bfd_section field of the header. */ | |
700 | ||
b34976b6 | 701 | bfd_boolean |
217aa764 AM |
702 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
703 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
704 | const char *name, |
705 | int shindex) | |
252b5132 RH |
706 | { |
707 | asection *newsect; | |
708 | flagword flags; | |
9c5bfbb7 | 709 | const struct elf_backend_data *bed; |
252b5132 RH |
710 | |
711 | if (hdr->bfd_section != NULL) | |
712 | { | |
713 | BFD_ASSERT (strcmp (name, | |
714 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 715 | return TRUE; |
252b5132 RH |
716 | } |
717 | ||
718 | newsect = bfd_make_section_anyway (abfd, name); | |
719 | if (newsect == NULL) | |
b34976b6 | 720 | return FALSE; |
252b5132 | 721 | |
1829f4b2 AM |
722 | hdr->bfd_section = newsect; |
723 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 724 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 725 | |
2f89ff8d L |
726 | /* Always use the real type/flags. */ |
727 | elf_section_type (newsect) = hdr->sh_type; | |
728 | elf_section_flags (newsect) = hdr->sh_flags; | |
729 | ||
252b5132 RH |
730 | newsect->filepos = hdr->sh_offset; |
731 | ||
732 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
733 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
734 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 735 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 736 | return FALSE; |
252b5132 RH |
737 | |
738 | flags = SEC_NO_FLAGS; | |
739 | if (hdr->sh_type != SHT_NOBITS) | |
740 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 741 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 742 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
743 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
744 | { | |
745 | flags |= SEC_ALLOC; | |
746 | if (hdr->sh_type != SHT_NOBITS) | |
747 | flags |= SEC_LOAD; | |
748 | } | |
749 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
750 | flags |= SEC_READONLY; | |
751 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
752 | flags |= SEC_CODE; | |
753 | else if ((flags & SEC_LOAD) != 0) | |
754 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
755 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
756 | { | |
757 | flags |= SEC_MERGE; | |
758 | newsect->entsize = hdr->sh_entsize; | |
759 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
760 | flags |= SEC_STRINGS; | |
761 | } | |
dbb410c3 AM |
762 | if (hdr->sh_flags & SHF_GROUP) |
763 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 764 | return FALSE; |
13ae64f3 JJ |
765 | if ((hdr->sh_flags & SHF_TLS) != 0) |
766 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 767 | |
3d2b39cf | 768 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 769 | { |
3d2b39cf L |
770 | /* The debugging sections appear to be recognized only by name, |
771 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
772 | static const struct | |
773 | { | |
774 | const char *name; | |
775 | int len; | |
776 | } debug_sections [] = | |
777 | { | |
778 | { "debug", 5 }, /* 'd' */ | |
779 | { NULL, 0 }, /* 'e' */ | |
780 | { NULL, 0 }, /* 'f' */ | |
781 | { "gnu.linkonce.wi.", 17 }, /* 'g' */ | |
782 | { NULL, 0 }, /* 'h' */ | |
783 | { NULL, 0 }, /* 'i' */ | |
784 | { NULL, 0 }, /* 'j' */ | |
785 | { NULL, 0 }, /* 'k' */ | |
786 | { "line", 4 }, /* 'l' */ | |
787 | { NULL, 0 }, /* 'm' */ | |
788 | { NULL, 0 }, /* 'n' */ | |
789 | { NULL, 0 }, /* 'o' */ | |
790 | { NULL, 0 }, /* 'p' */ | |
791 | { NULL, 0 }, /* 'q' */ | |
792 | { NULL, 0 }, /* 'r' */ | |
793 | { "stab", 4 } /* 's' */ | |
794 | }; | |
795 | ||
796 | if (name [0] == '.') | |
797 | { | |
798 | int i = name [1] - 'd'; | |
799 | if (i >= 0 | |
800 | && i < (int) ARRAY_SIZE (debug_sections) | |
801 | && debug_sections [i].name != NULL | |
802 | && strncmp (&name [1], debug_sections [i].name, | |
803 | debug_sections [i].len) == 0) | |
804 | flags |= SEC_DEBUGGING; | |
805 | } | |
806 | } | |
252b5132 RH |
807 | |
808 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
809 | only link a single copy of the section. This is used to support | |
810 | g++. g++ will emit each template expansion in its own section. | |
811 | The symbols will be defined as weak, so that multiple definitions | |
812 | are permitted. The GNU linker extension is to actually discard | |
813 | all but one of the sections. */ | |
b885599b AM |
814 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
815 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
816 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
817 | ||
fa152c49 JW |
818 | bed = get_elf_backend_data (abfd); |
819 | if (bed->elf_backend_section_flags) | |
820 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 821 | return FALSE; |
fa152c49 | 822 | |
252b5132 | 823 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 824 | return FALSE; |
252b5132 RH |
825 | |
826 | if ((flags & SEC_ALLOC) != 0) | |
827 | { | |
828 | Elf_Internal_Phdr *phdr; | |
829 | unsigned int i; | |
830 | ||
831 | /* Look through the phdrs to see if we need to adjust the lma. | |
832 | If all the p_paddr fields are zero, we ignore them, since | |
833 | some ELF linkers produce such output. */ | |
834 | phdr = elf_tdata (abfd)->phdr; | |
835 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
836 | { | |
837 | if (phdr->p_paddr != 0) | |
838 | break; | |
839 | } | |
840 | if (i < elf_elfheader (abfd)->e_phnum) | |
841 | { | |
842 | phdr = elf_tdata (abfd)->phdr; | |
843 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
844 | { | |
e0e8c97f NC |
845 | /* This section is part of this segment if its file |
846 | offset plus size lies within the segment's memory | |
847 | span and, if the section is loaded, the extent of the | |
47d9a591 | 848 | loaded data lies within the extent of the segment. |
bf36db18 NC |
849 | |
850 | Note - we used to check the p_paddr field as well, and | |
851 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 852 | though, as a perfectly valid initialised segment can |
bf36db18 | 853 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 854 | place special significance on the address 0 and |
bf36db18 NC |
855 | executables need to be able to have a segment which |
856 | covers this address. */ | |
252b5132 | 857 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
858 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
859 | && (hdr->sh_offset + hdr->sh_size | |
860 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 861 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
862 | || (hdr->sh_offset + hdr->sh_size |
863 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 864 | { |
dba143ef | 865 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
866 | newsect->lma = (phdr->p_paddr |
867 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
868 | else |
869 | /* We used to use the same adjustment for SEC_LOAD | |
870 | sections, but that doesn't work if the segment | |
871 | is packed with code from multiple VMAs. | |
872 | Instead we calculate the section LMA based on | |
873 | the segment LMA. It is assumed that the | |
874 | segment will contain sections with contiguous | |
875 | LMAs, even if the VMAs are not. */ | |
876 | newsect->lma = (phdr->p_paddr | |
877 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
878 | |
879 | /* With contiguous segments, we can't tell from file | |
880 | offsets whether a section with zero size should | |
881 | be placed at the end of one segment or the | |
882 | beginning of the next. Decide based on vaddr. */ | |
883 | if (hdr->sh_addr >= phdr->p_vaddr | |
884 | && (hdr->sh_addr + hdr->sh_size | |
885 | <= phdr->p_vaddr + phdr->p_memsz)) | |
886 | break; | |
252b5132 RH |
887 | } |
888 | } | |
889 | } | |
890 | } | |
891 | ||
b34976b6 | 892 | return TRUE; |
252b5132 RH |
893 | } |
894 | ||
895 | /* | |
896 | INTERNAL_FUNCTION | |
897 | bfd_elf_find_section | |
898 | ||
899 | SYNOPSIS | |
900 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
901 | ||
902 | DESCRIPTION | |
903 | Helper functions for GDB to locate the string tables. | |
904 | Since BFD hides string tables from callers, GDB needs to use an | |
905 | internal hook to find them. Sun's .stabstr, in particular, | |
906 | isn't even pointed to by the .stab section, so ordinary | |
907 | mechanisms wouldn't work to find it, even if we had some. | |
908 | */ | |
909 | ||
910 | struct elf_internal_shdr * | |
217aa764 | 911 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
912 | { |
913 | Elf_Internal_Shdr **i_shdrp; | |
914 | char *shstrtab; | |
915 | unsigned int max; | |
916 | unsigned int i; | |
917 | ||
918 | i_shdrp = elf_elfsections (abfd); | |
919 | if (i_shdrp != NULL) | |
920 | { | |
9ad5cbcf AM |
921 | shstrtab = bfd_elf_get_str_section (abfd, |
922 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
923 | if (shstrtab != NULL) |
924 | { | |
9ad5cbcf | 925 | max = elf_numsections (abfd); |
252b5132 RH |
926 | for (i = 1; i < max; i++) |
927 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
928 | return i_shdrp[i]; | |
929 | } | |
930 | } | |
931 | return 0; | |
932 | } | |
933 | ||
934 | const char *const bfd_elf_section_type_names[] = { | |
935 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
936 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
937 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
938 | }; | |
939 | ||
1049f94e | 940 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
941 | output, and the reloc is against an external symbol, and nothing |
942 | has given us any additional addend, the resulting reloc will also | |
943 | be against the same symbol. In such a case, we don't want to | |
944 | change anything about the way the reloc is handled, since it will | |
945 | all be done at final link time. Rather than put special case code | |
946 | into bfd_perform_relocation, all the reloc types use this howto | |
947 | function. It just short circuits the reloc if producing | |
1049f94e | 948 | relocatable output against an external symbol. */ |
252b5132 | 949 | |
252b5132 | 950 | bfd_reloc_status_type |
217aa764 AM |
951 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
952 | arelent *reloc_entry, | |
953 | asymbol *symbol, | |
954 | void *data ATTRIBUTE_UNUSED, | |
955 | asection *input_section, | |
956 | bfd *output_bfd, | |
957 | char **error_message ATTRIBUTE_UNUSED) | |
958 | { | |
959 | if (output_bfd != NULL | |
252b5132 RH |
960 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
961 | && (! reloc_entry->howto->partial_inplace | |
962 | || reloc_entry->addend == 0)) | |
963 | { | |
964 | reloc_entry->address += input_section->output_offset; | |
965 | return bfd_reloc_ok; | |
966 | } | |
967 | ||
968 | return bfd_reloc_continue; | |
969 | } | |
970 | \f | |
d3c456e9 JJ |
971 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
972 | ||
973 | static void | |
217aa764 AM |
974 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
975 | asection *sec) | |
d3c456e9 | 976 | { |
68bfbfcc AM |
977 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
978 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
979 | } |
980 | ||
8550eb6e JJ |
981 | /* Finish SHF_MERGE section merging. */ |
982 | ||
b34976b6 | 983 | bfd_boolean |
217aa764 | 984 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 985 | { |
57ceae94 AM |
986 | bfd *ibfd; |
987 | asection *sec; | |
988 | ||
0eddce27 | 989 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 990 | return FALSE; |
57ceae94 AM |
991 | |
992 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
993 | if ((ibfd->flags & DYNAMIC) == 0) | |
994 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
995 | if ((sec->flags & SEC_MERGE) != 0 | |
996 | && !bfd_is_abs_section (sec->output_section)) | |
997 | { | |
998 | struct bfd_elf_section_data *secdata; | |
999 | ||
1000 | secdata = elf_section_data (sec); | |
1001 | if (! _bfd_add_merge_section (abfd, | |
1002 | &elf_hash_table (info)->merge_info, | |
1003 | sec, &secdata->sec_info)) | |
1004 | return FALSE; | |
1005 | else if (secdata->sec_info) | |
1006 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
1007 | } | |
1008 | ||
1009 | if (elf_hash_table (info)->merge_info != NULL) | |
1010 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 1011 | merge_sections_remove_hook); |
b34976b6 | 1012 | return TRUE; |
8550eb6e | 1013 | } |
2d653fc7 AM |
1014 | |
1015 | void | |
217aa764 | 1016 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
1017 | { |
1018 | sec->output_section = bfd_abs_section_ptr; | |
1019 | sec->output_offset = sec->vma; | |
0eddce27 | 1020 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
1021 | return; |
1022 | ||
68bfbfcc | 1023 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 1024 | } |
8550eb6e | 1025 | \f |
0ac4564e L |
1026 | /* Copy the program header and other data from one object module to |
1027 | another. */ | |
252b5132 | 1028 | |
b34976b6 | 1029 | bfd_boolean |
217aa764 | 1030 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1031 | { |
1032 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1033 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1034 | return TRUE; |
2d502050 L |
1035 | |
1036 | BFD_ASSERT (!elf_flags_init (obfd) | |
1037 | || (elf_elfheader (obfd)->e_flags | |
1038 | == elf_elfheader (ibfd)->e_flags)); | |
1039 | ||
0ac4564e | 1040 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1041 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1042 | elf_flags_init (obfd) = TRUE; |
1043 | return TRUE; | |
2d502050 L |
1044 | } |
1045 | ||
f0b79d91 L |
1046 | /* Print out the program headers. */ |
1047 | ||
b34976b6 | 1048 | bfd_boolean |
217aa764 | 1049 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1050 | { |
217aa764 | 1051 | FILE *f = farg; |
252b5132 RH |
1052 | Elf_Internal_Phdr *p; |
1053 | asection *s; | |
1054 | bfd_byte *dynbuf = NULL; | |
1055 | ||
1056 | p = elf_tdata (abfd)->phdr; | |
1057 | if (p != NULL) | |
1058 | { | |
1059 | unsigned int i, c; | |
1060 | ||
1061 | fprintf (f, _("\nProgram Header:\n")); | |
1062 | c = elf_elfheader (abfd)->e_phnum; | |
1063 | for (i = 0; i < c; i++, p++) | |
1064 | { | |
dc810e39 | 1065 | const char *pt; |
252b5132 RH |
1066 | char buf[20]; |
1067 | ||
1068 | switch (p->p_type) | |
1069 | { | |
dc810e39 AM |
1070 | case PT_NULL: pt = "NULL"; break; |
1071 | case PT_LOAD: pt = "LOAD"; break; | |
1072 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1073 | case PT_INTERP: pt = "INTERP"; break; | |
1074 | case PT_NOTE: pt = "NOTE"; break; | |
1075 | case PT_SHLIB: pt = "SHLIB"; break; | |
1076 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 1077 | case PT_TLS: pt = "TLS"; break; |
65765700 | 1078 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 1079 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 1080 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 1081 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 1082 | } |
dc810e39 | 1083 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1084 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1085 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1086 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1087 | fprintf (f, " paddr 0x"); |
60b89a18 | 1088 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1089 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1090 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1091 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1092 | fprintf (f, " memsz 0x"); |
60b89a18 | 1093 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1094 | fprintf (f, " flags %c%c%c", |
1095 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1096 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1097 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1098 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1099 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1100 | fprintf (f, "\n"); |
1101 | } | |
1102 | } | |
1103 | ||
1104 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1105 | if (s != NULL) | |
1106 | { | |
1107 | int elfsec; | |
dc810e39 | 1108 | unsigned long shlink; |
252b5132 RH |
1109 | bfd_byte *extdyn, *extdynend; |
1110 | size_t extdynsize; | |
217aa764 | 1111 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1112 | |
1113 | fprintf (f, _("\nDynamic Section:\n")); | |
1114 | ||
eea6121a | 1115 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1116 | goto error_return; |
1117 | ||
1118 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1119 | if (elfsec == -1) | |
1120 | goto error_return; | |
dc810e39 | 1121 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1122 | |
1123 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1124 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1125 | ||
1126 | extdyn = dynbuf; | |
eea6121a | 1127 | extdynend = extdyn + s->size; |
252b5132 RH |
1128 | for (; extdyn < extdynend; extdyn += extdynsize) |
1129 | { | |
1130 | Elf_Internal_Dyn dyn; | |
1131 | const char *name; | |
1132 | char ab[20]; | |
b34976b6 | 1133 | bfd_boolean stringp; |
252b5132 | 1134 | |
217aa764 | 1135 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1136 | |
1137 | if (dyn.d_tag == DT_NULL) | |
1138 | break; | |
1139 | ||
b34976b6 | 1140 | stringp = FALSE; |
252b5132 RH |
1141 | switch (dyn.d_tag) |
1142 | { | |
1143 | default: | |
1144 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1145 | name = ab; | |
1146 | break; | |
1147 | ||
b34976b6 | 1148 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1149 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1150 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1151 | case DT_HASH: name = "HASH"; break; | |
1152 | case DT_STRTAB: name = "STRTAB"; break; | |
1153 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1154 | case DT_RELA: name = "RELA"; break; | |
1155 | case DT_RELASZ: name = "RELASZ"; break; | |
1156 | case DT_RELAENT: name = "RELAENT"; break; | |
1157 | case DT_STRSZ: name = "STRSZ"; break; | |
1158 | case DT_SYMENT: name = "SYMENT"; break; | |
1159 | case DT_INIT: name = "INIT"; break; | |
1160 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1161 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1162 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1163 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1164 | case DT_REL: name = "REL"; break; | |
1165 | case DT_RELSZ: name = "RELSZ"; break; | |
1166 | case DT_RELENT: name = "RELENT"; break; | |
1167 | case DT_PLTREL: name = "PLTREL"; break; | |
1168 | case DT_DEBUG: name = "DEBUG"; break; | |
1169 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1170 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1171 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1172 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1173 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1174 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1175 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1176 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1177 | case DT_FLAGS: name = "FLAGS"; break; |
1178 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1179 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1180 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1181 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1182 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1183 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1184 | case DT_FEATURE: name = "FEATURE"; break; | |
1185 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1186 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1187 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1188 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1189 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1190 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1191 | case DT_PLTPAD: name = "PLTPAD"; break; |
1192 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1193 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1194 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1195 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1196 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1197 | case DT_VERSYM: name = "VERSYM"; break; |
1198 | case DT_VERDEF: name = "VERDEF"; break; | |
1199 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1200 | case DT_VERNEED: name = "VERNEED"; break; | |
1201 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1202 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1203 | case DT_USED: name = "USED"; break; |
b34976b6 | 1204 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1205 | } |
1206 | ||
1207 | fprintf (f, " %-11s ", name); | |
1208 | if (! stringp) | |
1209 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1210 | else | |
1211 | { | |
1212 | const char *string; | |
dc810e39 | 1213 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1214 | |
dc810e39 | 1215 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1216 | if (string == NULL) |
1217 | goto error_return; | |
1218 | fprintf (f, "%s", string); | |
1219 | } | |
1220 | fprintf (f, "\n"); | |
1221 | } | |
1222 | ||
1223 | free (dynbuf); | |
1224 | dynbuf = NULL; | |
1225 | } | |
1226 | ||
1227 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1228 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1229 | { | |
fc0e6df6 | 1230 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1231 | return FALSE; |
252b5132 RH |
1232 | } |
1233 | ||
1234 | if (elf_dynverdef (abfd) != 0) | |
1235 | { | |
1236 | Elf_Internal_Verdef *t; | |
1237 | ||
1238 | fprintf (f, _("\nVersion definitions:\n")); | |
1239 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1240 | { | |
1241 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
1242 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
1243 | if (t->vd_auxptr->vda_nextptr != NULL) | |
1244 | { | |
1245 | Elf_Internal_Verdaux *a; | |
1246 | ||
1247 | fprintf (f, "\t"); | |
1248 | for (a = t->vd_auxptr->vda_nextptr; | |
1249 | a != NULL; | |
1250 | a = a->vda_nextptr) | |
1251 | fprintf (f, "%s ", a->vda_nodename); | |
1252 | fprintf (f, "\n"); | |
1253 | } | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | if (elf_dynverref (abfd) != 0) | |
1258 | { | |
1259 | Elf_Internal_Verneed *t; | |
1260 | ||
1261 | fprintf (f, _("\nVersion References:\n")); | |
1262 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1263 | { | |
1264 | Elf_Internal_Vernaux *a; | |
1265 | ||
1266 | fprintf (f, _(" required from %s:\n"), t->vn_filename); | |
1267 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1268 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
1269 | a->vna_flags, a->vna_other, a->vna_nodename); | |
1270 | } | |
1271 | } | |
1272 | ||
b34976b6 | 1273 | return TRUE; |
252b5132 RH |
1274 | |
1275 | error_return: | |
1276 | if (dynbuf != NULL) | |
1277 | free (dynbuf); | |
b34976b6 | 1278 | return FALSE; |
252b5132 RH |
1279 | } |
1280 | ||
1281 | /* Display ELF-specific fields of a symbol. */ | |
1282 | ||
1283 | void | |
217aa764 AM |
1284 | bfd_elf_print_symbol (bfd *abfd, |
1285 | void *filep, | |
1286 | asymbol *symbol, | |
1287 | bfd_print_symbol_type how) | |
252b5132 | 1288 | { |
217aa764 | 1289 | FILE *file = filep; |
252b5132 RH |
1290 | switch (how) |
1291 | { | |
1292 | case bfd_print_symbol_name: | |
1293 | fprintf (file, "%s", symbol->name); | |
1294 | break; | |
1295 | case bfd_print_symbol_more: | |
1296 | fprintf (file, "elf "); | |
60b89a18 | 1297 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1298 | fprintf (file, " %lx", (long) symbol->flags); |
1299 | break; | |
1300 | case bfd_print_symbol_all: | |
1301 | { | |
4e8a9624 AM |
1302 | const char *section_name; |
1303 | const char *name = NULL; | |
9c5bfbb7 | 1304 | const struct elf_backend_data *bed; |
7a13edea | 1305 | unsigned char st_other; |
dbb410c3 | 1306 | bfd_vma val; |
c044fabd | 1307 | |
252b5132 | 1308 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1309 | |
1310 | bed = get_elf_backend_data (abfd); | |
1311 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1312 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1313 | |
1314 | if (name == NULL) | |
1315 | { | |
7ee38065 | 1316 | name = symbol->name; |
217aa764 | 1317 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1318 | } |
1319 | ||
252b5132 RH |
1320 | fprintf (file, " %s\t", section_name); |
1321 | /* Print the "other" value for a symbol. For common symbols, | |
1322 | we've already printed the size; now print the alignment. | |
1323 | For other symbols, we have no specified alignment, and | |
1324 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1325 | if (bfd_is_com_section (symbol->section)) |
1326 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1327 | else | |
1328 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1329 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1330 | |
1331 | /* If we have version information, print it. */ | |
1332 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1333 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1334 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1335 | { | |
1336 | unsigned int vernum; | |
1337 | const char *version_string; | |
1338 | ||
1339 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1340 | ||
1341 | if (vernum == 0) | |
1342 | version_string = ""; | |
1343 | else if (vernum == 1) | |
1344 | version_string = "Base"; | |
1345 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1346 | version_string = | |
1347 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1348 | else | |
1349 | { | |
1350 | Elf_Internal_Verneed *t; | |
1351 | ||
1352 | version_string = ""; | |
1353 | for (t = elf_tdata (abfd)->verref; | |
1354 | t != NULL; | |
1355 | t = t->vn_nextref) | |
1356 | { | |
1357 | Elf_Internal_Vernaux *a; | |
1358 | ||
1359 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1360 | { | |
1361 | if (a->vna_other == vernum) | |
1362 | { | |
1363 | version_string = a->vna_nodename; | |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1371 | fprintf (file, " %-11s", version_string); | |
1372 | else | |
1373 | { | |
1374 | int i; | |
1375 | ||
1376 | fprintf (file, " (%s)", version_string); | |
1377 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1378 | putc (' ', file); | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1383 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1384 | |
7a13edea NC |
1385 | switch (st_other) |
1386 | { | |
1387 | case 0: break; | |
1388 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1389 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1390 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1391 | default: | |
1392 | /* Some other non-defined flags are also present, so print | |
1393 | everything hex. */ | |
1394 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1395 | } | |
252b5132 | 1396 | |
587ff49e | 1397 | fprintf (file, " %s", name); |
252b5132 RH |
1398 | } |
1399 | break; | |
1400 | } | |
1401 | } | |
1402 | \f | |
1403 | /* Create an entry in an ELF linker hash table. */ | |
1404 | ||
1405 | struct bfd_hash_entry * | |
217aa764 AM |
1406 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1407 | struct bfd_hash_table *table, | |
1408 | const char *string) | |
252b5132 | 1409 | { |
252b5132 RH |
1410 | /* Allocate the structure if it has not already been allocated by a |
1411 | subclass. */ | |
51b64d56 AM |
1412 | if (entry == NULL) |
1413 | { | |
1414 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1415 | if (entry == NULL) | |
1416 | return entry; | |
1417 | } | |
252b5132 RH |
1418 | |
1419 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1420 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1421 | if (entry != NULL) | |
252b5132 | 1422 | { |
51b64d56 AM |
1423 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1424 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1425 | ||
252b5132 RH |
1426 | /* Set local fields. */ |
1427 | ret->indx = -1; | |
252b5132 | 1428 | ret->dynindx = -1; |
f6e332e6 AM |
1429 | ret->got = ret->plt = htab->init_refcount; |
1430 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) | |
1431 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1432 | /* Assume that we have been called by a non-ELF symbol reader. |
1433 | This flag is then reset by the code which reads an ELF input | |
1434 | file. This ensures that a symbol created by a non-ELF symbol | |
1435 | reader will have the flag set correctly. */ | |
f5385ebf | 1436 | ret->non_elf = 1; |
252b5132 RH |
1437 | } |
1438 | ||
51b64d56 | 1439 | return entry; |
252b5132 RH |
1440 | } |
1441 | ||
2920b85c | 1442 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1443 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1444 | |
c61b8717 | 1445 | void |
9c5bfbb7 | 1446 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1447 | struct elf_link_hash_entry *dir, |
1448 | struct elf_link_hash_entry *ind) | |
2920b85c | 1449 | { |
3c3e9281 | 1450 | bfd_signed_vma tmp; |
b48fa14c | 1451 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1452 | |
2920b85c RH |
1453 | /* Copy down any references that we may have already seen to the |
1454 | symbol which just became indirect. */ | |
1455 | ||
f5385ebf AM |
1456 | dir->ref_dynamic |= ind->ref_dynamic; |
1457 | dir->ref_regular |= ind->ref_regular; | |
1458 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1459 | dir->non_got_ref |= ind->non_got_ref; | |
1460 | dir->needs_plt |= ind->needs_plt; | |
1461 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1462 | |
1e370bd2 | 1463 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1464 | return; |
1465 | ||
51b64d56 | 1466 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1467 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1468 | tmp = dir->got.refcount; |
b48fa14c | 1469 | if (tmp < lowest_valid) |
2920b85c | 1470 | { |
51b64d56 | 1471 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1472 | ind->got.refcount = tmp; |
2920b85c | 1473 | } |
3c3e9281 | 1474 | else |
b48fa14c | 1475 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1476 | |
3c3e9281 | 1477 | tmp = dir->plt.refcount; |
b48fa14c | 1478 | if (tmp < lowest_valid) |
2920b85c | 1479 | { |
51b64d56 | 1480 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1481 | ind->plt.refcount = tmp; |
2920b85c | 1482 | } |
3c3e9281 | 1483 | else |
b48fa14c | 1484 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1485 | |
1486 | if (dir->dynindx == -1) | |
1487 | { | |
1488 | dir->dynindx = ind->dynindx; | |
1489 | dir->dynstr_index = ind->dynstr_index; | |
1490 | ind->dynindx = -1; | |
1491 | ind->dynstr_index = 0; | |
1492 | } | |
3c3e9281 AM |
1493 | else |
1494 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1495 | } |
1496 | ||
c61b8717 | 1497 | void |
217aa764 AM |
1498 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1499 | struct elf_link_hash_entry *h, | |
1500 | bfd_boolean force_local) | |
2920b85c | 1501 | { |
5cab59f6 | 1502 | h->plt = elf_hash_table (info)->init_offset; |
f5385ebf | 1503 | h->needs_plt = 0; |
e5094212 AM |
1504 | if (force_local) |
1505 | { | |
f5385ebf | 1506 | h->forced_local = 1; |
e5094212 AM |
1507 | if (h->dynindx != -1) |
1508 | { | |
1509 | h->dynindx = -1; | |
1510 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1511 | h->dynstr_index); | |
1512 | } | |
1513 | } | |
2920b85c RH |
1514 | } |
1515 | ||
252b5132 RH |
1516 | /* Initialize an ELF linker hash table. */ |
1517 | ||
b34976b6 | 1518 | bfd_boolean |
217aa764 AM |
1519 | _bfd_elf_link_hash_table_init |
1520 | (struct elf_link_hash_table *table, | |
1521 | bfd *abfd, | |
1522 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1523 | struct bfd_hash_table *, | |
1524 | const char *)) | |
252b5132 | 1525 | { |
b34976b6 | 1526 | bfd_boolean ret; |
8ea2e4bd | 1527 | |
b34976b6 | 1528 | table->dynamic_sections_created = FALSE; |
252b5132 | 1529 | table->dynobj = NULL; |
963f13ec AO |
1530 | /* Make sure can_refcount is extended to the width and signedness of |
1531 | init_refcount before we subtract one from it. */ | |
5cab59f6 AM |
1532 | table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; |
1533 | table->init_refcount.refcount -= 1; | |
1534 | table->init_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1535 | /* The first dynamic symbol is a dummy. */ |
1536 | table->dynsymcount = 1; | |
1537 | table->dynstr = NULL; | |
1538 | table->bucketcount = 0; | |
1539 | table->needed = NULL; | |
1540 | table->hgot = NULL; | |
f5fa8ca2 | 1541 | table->merge_info = NULL; |
3722b82f | 1542 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1543 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1544 | table->dynlocal = NULL; |
73722af0 | 1545 | table->runpath = NULL; |
e1918d23 AM |
1546 | table->tls_sec = NULL; |
1547 | table->tls_size = 0; | |
73722af0 | 1548 | table->loaded = NULL; |
67687978 | 1549 | table->is_relocatable_executable = FALSE; |
73722af0 AM |
1550 | |
1551 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1552 | table->root.type = bfd_link_elf_hash_table; |
1553 | ||
1554 | return ret; | |
252b5132 RH |
1555 | } |
1556 | ||
1557 | /* Create an ELF linker hash table. */ | |
1558 | ||
1559 | struct bfd_link_hash_table * | |
217aa764 | 1560 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1561 | { |
1562 | struct elf_link_hash_table *ret; | |
dc810e39 | 1563 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1564 | |
217aa764 AM |
1565 | ret = bfd_malloc (amt); |
1566 | if (ret == NULL) | |
252b5132 RH |
1567 | return NULL; |
1568 | ||
1569 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1570 | { | |
e2d34d7d | 1571 | free (ret); |
252b5132 RH |
1572 | return NULL; |
1573 | } | |
1574 | ||
1575 | return &ret->root; | |
1576 | } | |
1577 | ||
1578 | /* This is a hook for the ELF emulation code in the generic linker to | |
1579 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1580 | entry for a dynamic object. */ |
252b5132 RH |
1581 | |
1582 | void | |
217aa764 | 1583 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1584 | { |
1585 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1586 | && bfd_get_format (abfd) == bfd_object) | |
1587 | elf_dt_name (abfd) = name; | |
1588 | } | |
1589 | ||
e56f61be L |
1590 | int |
1591 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1592 | { | |
1593 | int lib_class; | |
1594 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1595 | && bfd_get_format (abfd) == bfd_object) | |
1596 | lib_class = elf_dyn_lib_class (abfd); | |
1597 | else | |
1598 | lib_class = 0; | |
1599 | return lib_class; | |
1600 | } | |
1601 | ||
74816898 | 1602 | void |
4a43e768 | 1603 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1604 | { |
1605 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1606 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1607 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1608 | } |
1609 | ||
252b5132 RH |
1610 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1611 | the linker ELF emulation code. */ | |
1612 | ||
1613 | struct bfd_link_needed_list * | |
217aa764 AM |
1614 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1615 | struct bfd_link_info *info) | |
252b5132 | 1616 | { |
0eddce27 | 1617 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1618 | return NULL; |
1619 | return elf_hash_table (info)->needed; | |
1620 | } | |
1621 | ||
a963dc6a L |
1622 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1623 | hook for the linker ELF emulation code. */ | |
1624 | ||
1625 | struct bfd_link_needed_list * | |
217aa764 AM |
1626 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1627 | struct bfd_link_info *info) | |
a963dc6a | 1628 | { |
0eddce27 | 1629 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1630 | return NULL; |
1631 | return elf_hash_table (info)->runpath; | |
1632 | } | |
1633 | ||
252b5132 RH |
1634 | /* Get the name actually used for a dynamic object for a link. This |
1635 | is the SONAME entry if there is one. Otherwise, it is the string | |
1636 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1637 | ||
1638 | const char * | |
217aa764 | 1639 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1640 | { |
1641 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1642 | && bfd_get_format (abfd) == bfd_object) | |
1643 | return elf_dt_name (abfd); | |
1644 | return NULL; | |
1645 | } | |
1646 | ||
1647 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1648 | the ELF linker emulation code. */ | |
1649 | ||
b34976b6 | 1650 | bfd_boolean |
217aa764 AM |
1651 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1652 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1653 | { |
1654 | asection *s; | |
1655 | bfd_byte *dynbuf = NULL; | |
1656 | int elfsec; | |
dc810e39 | 1657 | unsigned long shlink; |
252b5132 RH |
1658 | bfd_byte *extdyn, *extdynend; |
1659 | size_t extdynsize; | |
217aa764 | 1660 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1661 | |
1662 | *pneeded = NULL; | |
1663 | ||
1664 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1665 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1666 | return TRUE; |
252b5132 RH |
1667 | |
1668 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1669 | if (s == NULL || s->size == 0) |
b34976b6 | 1670 | return TRUE; |
252b5132 | 1671 | |
eea6121a | 1672 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1673 | goto error_return; |
1674 | ||
1675 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1676 | if (elfsec == -1) | |
1677 | goto error_return; | |
1678 | ||
dc810e39 | 1679 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1680 | |
1681 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1682 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1683 | ||
1684 | extdyn = dynbuf; | |
eea6121a | 1685 | extdynend = extdyn + s->size; |
252b5132 RH |
1686 | for (; extdyn < extdynend; extdyn += extdynsize) |
1687 | { | |
1688 | Elf_Internal_Dyn dyn; | |
1689 | ||
217aa764 | 1690 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1691 | |
1692 | if (dyn.d_tag == DT_NULL) | |
1693 | break; | |
1694 | ||
1695 | if (dyn.d_tag == DT_NEEDED) | |
1696 | { | |
1697 | const char *string; | |
1698 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1699 | unsigned int tagv = dyn.d_un.d_val; |
1700 | bfd_size_type amt; | |
252b5132 | 1701 | |
dc810e39 | 1702 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1703 | if (string == NULL) |
1704 | goto error_return; | |
1705 | ||
dc810e39 | 1706 | amt = sizeof *l; |
217aa764 | 1707 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1708 | if (l == NULL) |
1709 | goto error_return; | |
1710 | ||
1711 | l->by = abfd; | |
1712 | l->name = string; | |
1713 | l->next = *pneeded; | |
1714 | *pneeded = l; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | free (dynbuf); | |
1719 | ||
b34976b6 | 1720 | return TRUE; |
252b5132 RH |
1721 | |
1722 | error_return: | |
1723 | if (dynbuf != NULL) | |
1724 | free (dynbuf); | |
b34976b6 | 1725 | return FALSE; |
252b5132 RH |
1726 | } |
1727 | \f | |
1728 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1729 | ||
1730 | struct bfd_strtab_hash * | |
217aa764 | 1731 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1732 | { |
1733 | struct bfd_strtab_hash *ret; | |
1734 | ||
1735 | ret = _bfd_stringtab_init (); | |
1736 | if (ret != NULL) | |
1737 | { | |
1738 | bfd_size_type loc; | |
1739 | ||
b34976b6 | 1740 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1741 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1742 | if (loc == (bfd_size_type) -1) | |
1743 | { | |
1744 | _bfd_stringtab_free (ret); | |
1745 | ret = NULL; | |
1746 | } | |
1747 | } | |
1748 | return ret; | |
1749 | } | |
1750 | \f | |
1751 | /* ELF .o/exec file reading */ | |
1752 | ||
c044fabd | 1753 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1754 | |
b34976b6 | 1755 | bfd_boolean |
217aa764 | 1756 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1757 | { |
1758 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1759 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1760 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1761 | const char *name; |
252b5132 | 1762 | |
1b3a8575 AM |
1763 | name = bfd_elf_string_from_elf_section (abfd, |
1764 | elf_elfheader (abfd)->e_shstrndx, | |
1765 | hdr->sh_name); | |
252b5132 RH |
1766 | |
1767 | switch (hdr->sh_type) | |
1768 | { | |
1769 | case SHT_NULL: | |
1770 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1771 | return TRUE; |
252b5132 RH |
1772 | |
1773 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1774 | case SHT_NOBITS: /* .bss section. */ |
1775 | case SHT_HASH: /* .hash section. */ | |
1776 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1777 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1778 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1779 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1780 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
6dc132d9 | 1781 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1782 | |
797fc050 | 1783 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1784 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1785 | return FALSE; |
8e0ed13f NC |
1786 | if (hdr->sh_link > elf_numsections (abfd) |
1787 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1788 | return FALSE; | |
797fc050 AM |
1789 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1790 | { | |
1791 | Elf_Internal_Shdr *dynsymhdr; | |
1792 | ||
1793 | /* The shared libraries distributed with hpux11 have a bogus | |
1794 | sh_link field for the ".dynamic" section. Find the | |
1795 | string table for the ".dynsym" section instead. */ | |
1796 | if (elf_dynsymtab (abfd) != 0) | |
1797 | { | |
1798 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1799 | hdr->sh_link = dynsymhdr->sh_link; | |
1800 | } | |
1801 | else | |
1802 | { | |
1803 | unsigned int i, num_sec; | |
1804 | ||
1805 | num_sec = elf_numsections (abfd); | |
1806 | for (i = 1; i < num_sec; i++) | |
1807 | { | |
1808 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1809 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1810 | { | |
1811 | hdr->sh_link = dynsymhdr->sh_link; | |
1812 | break; | |
1813 | } | |
1814 | } | |
1815 | } | |
1816 | } | |
1817 | break; | |
1818 | ||
252b5132 RH |
1819 | case SHT_SYMTAB: /* A symbol table */ |
1820 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1821 | return TRUE; |
252b5132 RH |
1822 | |
1823 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1824 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1825 | elf_onesymtab (abfd) = shindex; | |
1826 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1827 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1828 | abfd->flags |= HAS_SYMS; | |
1829 | ||
1830 | /* Sometimes a shared object will map in the symbol table. If | |
1831 | SHF_ALLOC is set, and this is a shared object, then we also | |
1832 | treat this section as a BFD section. We can not base the | |
1833 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1834 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1835 | linker. */ |
1836 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1837 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1838 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1839 | shindex)) | |
b34976b6 | 1840 | return FALSE; |
252b5132 | 1841 | |
1b3a8575 AM |
1842 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1843 | can't read symbols without that section loaded as well. It | |
1844 | is most likely specified by the next section header. */ | |
1845 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1846 | { | |
1847 | unsigned int i, num_sec; | |
1848 | ||
1849 | num_sec = elf_numsections (abfd); | |
1850 | for (i = shindex + 1; i < num_sec; i++) | |
1851 | { | |
1852 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1853 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1854 | && hdr2->sh_link == shindex) | |
1855 | break; | |
1856 | } | |
1857 | if (i == num_sec) | |
1858 | for (i = 1; i < shindex; i++) | |
1859 | { | |
1860 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1861 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1862 | && hdr2->sh_link == shindex) | |
1863 | break; | |
1864 | } | |
1865 | if (i != shindex) | |
1866 | return bfd_section_from_shdr (abfd, i); | |
1867 | } | |
b34976b6 | 1868 | return TRUE; |
252b5132 RH |
1869 | |
1870 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1871 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1872 | return TRUE; |
252b5132 RH |
1873 | |
1874 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1875 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1876 | elf_dynsymtab (abfd) = shindex; | |
1877 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1878 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1879 | abfd->flags |= HAS_SYMS; | |
1880 | ||
1881 | /* Besides being a symbol table, we also treat this as a regular | |
1882 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1883 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1884 | |
9ad5cbcf AM |
1885 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1886 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1887 | return TRUE; |
9ad5cbcf | 1888 | |
1b3a8575 | 1889 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1890 | elf_symtab_shndx (abfd) = shindex; |
1891 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1892 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1893 | return TRUE; |
9ad5cbcf | 1894 | |
252b5132 RH |
1895 | case SHT_STRTAB: /* A string table */ |
1896 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1897 | return TRUE; |
252b5132 RH |
1898 | if (ehdr->e_shstrndx == shindex) |
1899 | { | |
1900 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1901 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1902 | return TRUE; |
252b5132 | 1903 | } |
1b3a8575 AM |
1904 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1905 | { | |
1906 | symtab_strtab: | |
1907 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1908 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1909 | return TRUE; | |
1910 | } | |
1911 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1912 | { | |
1913 | dynsymtab_strtab: | |
1914 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1915 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1916 | elf_elfsections (abfd)[shindex] = hdr; | |
1917 | /* We also treat this as a regular section, so that objcopy | |
1918 | can handle it. */ | |
6dc132d9 L |
1919 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1920 | shindex); | |
1b3a8575 | 1921 | } |
252b5132 | 1922 | |
1b3a8575 AM |
1923 | /* If the string table isn't one of the above, then treat it as a |
1924 | regular section. We need to scan all the headers to be sure, | |
1925 | just in case this strtab section appeared before the above. */ | |
1926 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1927 | { | |
1928 | unsigned int i, num_sec; | |
252b5132 | 1929 | |
1b3a8575 AM |
1930 | num_sec = elf_numsections (abfd); |
1931 | for (i = 1; i < num_sec; i++) | |
1932 | { | |
1933 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1934 | if (hdr2->sh_link == shindex) | |
1935 | { | |
1936 | if (! bfd_section_from_shdr (abfd, i)) | |
1937 | return FALSE; | |
1938 | if (elf_onesymtab (abfd) == i) | |
1939 | goto symtab_strtab; | |
1940 | if (elf_dynsymtab (abfd) == i) | |
1941 | goto dynsymtab_strtab; | |
1942 | } | |
1943 | } | |
1944 | } | |
6dc132d9 | 1945 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1946 | |
1947 | case SHT_REL: | |
1948 | case SHT_RELA: | |
1949 | /* *These* do a lot of work -- but build no sections! */ | |
1950 | { | |
1951 | asection *target_sect; | |
1952 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1953 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1954 | |
03ae5f59 | 1955 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1956 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1957 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1958 | { |
1959 | ((*_bfd_error_handler) | |
d003868e AM |
1960 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1961 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1962 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1963 | shindex); | |
03ae5f59 ILT |
1964 | } |
1965 | ||
252b5132 RH |
1966 | /* For some incomprehensible reason Oracle distributes |
1967 | libraries for Solaris in which some of the objects have | |
1968 | bogus sh_link fields. It would be nice if we could just | |
1969 | reject them, but, unfortunately, some people need to use | |
1970 | them. We scan through the section headers; if we find only | |
1971 | one suitable symbol table, we clobber the sh_link to point | |
1972 | to it. I hope this doesn't break anything. */ | |
1973 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1974 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1975 | { | |
9ad5cbcf | 1976 | unsigned int scan; |
252b5132 RH |
1977 | int found; |
1978 | ||
1979 | found = 0; | |
9ad5cbcf | 1980 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1981 | { |
1982 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1983 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1984 | { | |
1985 | if (found != 0) | |
1986 | { | |
1987 | found = 0; | |
1988 | break; | |
1989 | } | |
1990 | found = scan; | |
1991 | } | |
1992 | } | |
1993 | if (found != 0) | |
1994 | hdr->sh_link = found; | |
1995 | } | |
1996 | ||
1997 | /* Get the symbol table. */ | |
1b3a8575 AM |
1998 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1999 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 2000 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 2001 | return FALSE; |
252b5132 RH |
2002 | |
2003 | /* If this reloc section does not use the main symbol table we | |
2004 | don't treat it as a reloc section. BFD can't adequately | |
2005 | represent such a section, so at least for now, we don't | |
c044fabd | 2006 | try. We just present it as a normal section. We also |
60bcf0fa | 2007 | can't use it as a reloc section if it points to the null |
c044fabd | 2008 | section. */ |
60bcf0fa | 2009 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
6dc132d9 L |
2010 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
2011 | shindex); | |
252b5132 RH |
2012 | |
2013 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 2014 | return FALSE; |
252b5132 RH |
2015 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
2016 | if (target_sect == NULL) | |
b34976b6 | 2017 | return FALSE; |
252b5132 RH |
2018 | |
2019 | if ((target_sect->flags & SEC_RELOC) == 0 | |
2020 | || target_sect->reloc_count == 0) | |
2021 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
2022 | else | |
2023 | { | |
dc810e39 | 2024 | bfd_size_type amt; |
252b5132 | 2025 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 2026 | amt = sizeof (*hdr2); |
217aa764 | 2027 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
2028 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
2029 | } | |
2030 | *hdr2 = *hdr; | |
2031 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 2032 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
2033 | target_sect->flags |= SEC_RELOC; |
2034 | target_sect->relocation = NULL; | |
2035 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
2036 | /* In the section to which the relocations apply, mark whether |
2037 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2038 | if (hdr->sh_size != 0) |
68bfbfcc | 2039 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2040 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2041 | return TRUE; |
252b5132 RH |
2042 | } |
2043 | break; | |
2044 | ||
2045 | case SHT_GNU_verdef: | |
2046 | elf_dynverdef (abfd) = shindex; | |
2047 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2048 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2049 | break; |
2050 | ||
2051 | case SHT_GNU_versym: | |
2052 | elf_dynversym (abfd) = shindex; | |
2053 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2054 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2055 | break; |
2056 | ||
2057 | case SHT_GNU_verneed: | |
2058 | elf_dynverref (abfd) = shindex; | |
2059 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2060 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2061 | break; |
2062 | ||
2063 | case SHT_SHLIB: | |
b34976b6 | 2064 | return TRUE; |
252b5132 | 2065 | |
dbb410c3 | 2066 | case SHT_GROUP: |
b885599b AM |
2067 | /* We need a BFD section for objcopy and relocatable linking, |
2068 | and it's handy to have the signature available as the section | |
2069 | name. */ | |
2070 | name = group_signature (abfd, hdr); | |
2071 | if (name == NULL) | |
b34976b6 | 2072 | return FALSE; |
6dc132d9 | 2073 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2074 | return FALSE; |
dbb410c3 AM |
2075 | if (hdr->contents != NULL) |
2076 | { | |
2077 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2078 | unsigned int n_elt = hdr->sh_size / 4; | |
2079 | asection *s; | |
2080 | ||
b885599b AM |
2081 | if (idx->flags & GRP_COMDAT) |
2082 | hdr->bfd_section->flags | |
2083 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2084 | ||
45c5e9ed L |
2085 | /* We try to keep the same section order as it comes in. */ |
2086 | idx += n_elt; | |
dbb410c3 | 2087 | while (--n_elt != 0) |
45c5e9ed | 2088 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2089 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2090 | { |
945906ff | 2091 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2092 | break; |
2093 | } | |
2094 | } | |
2095 | break; | |
2096 | ||
252b5132 RH |
2097 | default: |
2098 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2099 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2100 | shindex); | |
252b5132 RH |
2101 | } |
2102 | ||
b34976b6 | 2103 | return TRUE; |
252b5132 RH |
2104 | } |
2105 | ||
ec338859 AM |
2106 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2107 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2108 | ||
2109 | asection * | |
217aa764 AM |
2110 | bfd_section_from_r_symndx (bfd *abfd, |
2111 | struct sym_sec_cache *cache, | |
2112 | asection *sec, | |
2113 | unsigned long r_symndx) | |
ec338859 | 2114 | { |
ec338859 | 2115 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2116 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2117 | Elf_External_Sym_Shndx eshndx; | |
2118 | Elf_Internal_Sym isym; | |
ec338859 AM |
2119 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2120 | ||
2121 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2122 | return cache->sec[ent]; | |
2123 | ||
2124 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2125 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2126 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2127 | return NULL; |
9ad5cbcf | 2128 | |
ec338859 AM |
2129 | if (cache->abfd != abfd) |
2130 | { | |
2131 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2132 | cache->abfd = abfd; | |
2133 | } | |
2134 | cache->indx[ent] = r_symndx; | |
2135 | cache->sec[ent] = sec; | |
50bc7936 AM |
2136 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2137 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2138 | { |
2139 | asection *s; | |
6cdc0ccc | 2140 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2141 | if (s != NULL) |
2142 | cache->sec[ent] = s; | |
2143 | } | |
2144 | return cache->sec[ent]; | |
2145 | } | |
2146 | ||
252b5132 RH |
2147 | /* Given an ELF section number, retrieve the corresponding BFD |
2148 | section. */ | |
2149 | ||
2150 | asection * | |
217aa764 | 2151 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2152 | { |
9ad5cbcf | 2153 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2154 | return NULL; |
2155 | return elf_elfsections (abfd)[index]->bfd_section; | |
2156 | } | |
2157 | ||
7f4d3958 | 2158 | static struct bfd_elf_special_section const special_sections_b[] = |
2f89ff8d | 2159 | { |
7dcb9820 | 2160 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7f4d3958 L |
2161 | { NULL, 0, 0, 0, 0 } |
2162 | }; | |
2163 | ||
2164 | static struct bfd_elf_special_section const special_sections_c[] = | |
2165 | { | |
7dcb9820 | 2166 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
7f4d3958 L |
2167 | { NULL, 0, 0, 0, 0 } |
2168 | }; | |
2169 | ||
2170 | static struct bfd_elf_special_section const special_sections_d[] = | |
2171 | { | |
7dcb9820 AM |
2172 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2173 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2174 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
7dcb9820 AM |
2175 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, |
2176 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2177 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2178 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2179 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2180 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2181 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
7f4d3958 L |
2182 | { NULL, 0, 0, 0, 0 } |
2183 | }; | |
2184 | ||
2185 | static struct bfd_elf_special_section const special_sections_f[] = | |
2186 | { | |
2187 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2188 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2189 | { NULL, 0, 0, 0, 0 } | |
2190 | }; | |
2191 | ||
2192 | static struct bfd_elf_special_section const special_sections_g[] = | |
2193 | { | |
2194 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7dcb9820 | 2195 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2196 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, |
2197 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2198 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
7f4d3958 L |
2199 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2200 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
2201 | { NULL, 0, 0, 0, 0 } | |
2202 | }; | |
2203 | ||
2204 | static struct bfd_elf_special_section const special_sections_h[] = | |
2205 | { | |
2206 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2207 | { NULL, 0, 0, 0, 0 } | |
2208 | }; | |
2209 | ||
2210 | static struct bfd_elf_special_section const special_sections_i[] = | |
2211 | { | |
2212 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2213 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2214 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2215 | { NULL, 0, 0, 0, 0 } | |
2216 | }; | |
2217 | ||
2218 | static struct bfd_elf_special_section const special_sections_l[] = | |
2219 | { | |
2220 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2221 | { NULL, 0, 0, 0, 0 } | |
2222 | }; | |
2223 | ||
2224 | static struct bfd_elf_special_section const special_sections_n[] = | |
2225 | { | |
45c5e9ed | 2226 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 | 2227 | { ".note", 5, -1, SHT_NOTE, 0 }, |
7f4d3958 L |
2228 | { NULL, 0, 0, 0, 0 } |
2229 | }; | |
2230 | ||
2231 | static struct bfd_elf_special_section const special_sections_p[] = | |
2232 | { | |
2233 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2234 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2235 | { NULL, 0, 0, 0, 0 } | |
2236 | }; | |
2237 | ||
2238 | static struct bfd_elf_special_section const special_sections_r[] = | |
2239 | { | |
2240 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2241 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
7dcb9820 AM |
2242 | { ".rela", 5, -1, SHT_RELA, 0 }, |
2243 | { ".rel", 4, -1, SHT_REL, 0 }, | |
7f4d3958 L |
2244 | { NULL, 0, 0, 0, 0 } |
2245 | }; | |
2246 | ||
2247 | static struct bfd_elf_special_section const special_sections_s[] = | |
2248 | { | |
2249 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2250 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2251 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
7dcb9820 AM |
2252 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, |
2253 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2254 | }; |
2255 | ||
7f4d3958 L |
2256 | static struct bfd_elf_special_section const special_sections_t[] = |
2257 | { | |
2258 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2259 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2260 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2261 | { NULL, 0, 0, 0, 0 } | |
2262 | }; | |
2263 | ||
2264 | static struct bfd_elf_special_section const *special_sections [27] = | |
2265 | { | |
2266 | NULL, /* 'a' */ | |
2267 | special_sections_b, /* 'b' */ | |
2268 | special_sections_c, /* 'b' */ | |
2269 | special_sections_d, /* 'd' */ | |
2270 | NULL, /* 'e' */ | |
2271 | special_sections_f, /* 'f' */ | |
2272 | special_sections_g, /* 'g' */ | |
2273 | special_sections_h, /* 'h' */ | |
2274 | special_sections_i, /* 'i' */ | |
2275 | NULL, /* 'j' */ | |
2276 | NULL, /* 'k' */ | |
2277 | special_sections_l, /* 'l' */ | |
2278 | NULL, /* 'm' */ | |
2279 | special_sections_n, /* 'n' */ | |
2280 | NULL, /* 'o' */ | |
2281 | special_sections_p, /* 'p' */ | |
2282 | NULL, /* 'q' */ | |
2283 | special_sections_r, /* 'r' */ | |
2284 | special_sections_s, /* 's' */ | |
2285 | special_sections_t, /* 't' */ | |
2286 | NULL, /* 'u' */ | |
2287 | NULL, /* 'v' */ | |
2288 | NULL, /* 'w' */ | |
2289 | NULL, /* 'x' */ | |
2290 | NULL, /* 'y' */ | |
2291 | NULL, /* 'z' */ | |
2292 | NULL /* other */ | |
2293 | }; | |
2294 | ||
2f89ff8d L |
2295 | static const struct bfd_elf_special_section * |
2296 | get_special_section (const char *name, | |
7f4d3958 | 2297 | const struct bfd_elf_special_section **special_sections_p, |
2f89ff8d L |
2298 | unsigned int rela) |
2299 | { | |
2300 | int i; | |
7f4d3958 L |
2301 | int len; |
2302 | const struct bfd_elf_special_section *special_sections; | |
2303 | ||
2304 | if (name [0] == '.') | |
2305 | { | |
2306 | i = name [1] - 'a'; | |
2307 | if (i < 0 || i > 25) | |
2308 | i = 26; | |
2309 | } | |
2310 | else | |
2311 | i = 26; | |
2312 | ||
2313 | special_sections = special_sections_p [i]; | |
2314 | ||
2315 | if (!special_sections) | |
2316 | return special_sections; | |
2317 | ||
2318 | len= strlen (name); | |
2f89ff8d L |
2319 | |
2320 | for (i = 0; special_sections[i].prefix != NULL; i++) | |
7dcb9820 AM |
2321 | { |
2322 | int suffix_len; | |
2323 | int prefix_len = special_sections[i].prefix_length; | |
2324 | ||
2325 | if (len < prefix_len) | |
2326 | continue; | |
2327 | if (memcmp (name, special_sections[i].prefix, prefix_len) != 0) | |
2328 | continue; | |
2329 | ||
2330 | suffix_len = special_sections[i].suffix_length; | |
2331 | if (suffix_len <= 0) | |
2332 | { | |
2333 | if (name[prefix_len] != 0) | |
2334 | { | |
2335 | if (suffix_len == 0) | |
2336 | continue; | |
2337 | if (name[prefix_len] != '.' | |
2338 | && (suffix_len == -2 | |
2339 | || (rela && special_sections[i].type == SHT_REL))) | |
2340 | continue; | |
2341 | } | |
2342 | } | |
2343 | else | |
2344 | { | |
2345 | if (len < prefix_len + suffix_len) | |
2346 | continue; | |
2347 | if (memcmp (name + len - suffix_len, | |
2348 | special_sections[i].prefix + prefix_len, | |
2349 | suffix_len) != 0) | |
2350 | continue; | |
2351 | } | |
2f89ff8d | 2352 | return &special_sections[i]; |
7dcb9820 | 2353 | } |
2f89ff8d L |
2354 | |
2355 | return NULL; | |
2356 | } | |
2357 | ||
7dcb9820 AM |
2358 | const struct bfd_elf_special_section * |
2359 | _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) | |
2f89ff8d | 2360 | { |
9c5bfbb7 | 2361 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7dcb9820 | 2362 | const struct bfd_elf_special_section *ssect = NULL; |
2f89ff8d L |
2363 | |
2364 | /* See if this is one of the special sections. */ | |
2365 | if (name) | |
2366 | { | |
9c5bfbb7 | 2367 | unsigned int rela = bed->default_use_rela_p; |
2f89ff8d L |
2368 | |
2369 | if (bed->special_sections) | |
2370 | ssect = get_special_section (name, bed->special_sections, rela); | |
2371 | ||
2372 | if (! ssect) | |
2373 | ssect = get_special_section (name, special_sections, rela); | |
2f89ff8d L |
2374 | } |
2375 | ||
7dcb9820 | 2376 | return ssect; |
2f89ff8d L |
2377 | } |
2378 | ||
b34976b6 | 2379 | bfd_boolean |
217aa764 | 2380 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2381 | { |
2382 | struct bfd_elf_section_data *sdata; | |
7dcb9820 | 2383 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2384 | |
f0abc2a1 AM |
2385 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2386 | if (sdata == NULL) | |
2387 | { | |
217aa764 | 2388 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2389 | if (sdata == NULL) |
2390 | return FALSE; | |
217aa764 | 2391 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2392 | } |
bf572ba0 | 2393 | |
3496cb2a L |
2394 | /* When we read a file, we don't need section type and flags unless |
2395 | it is a linker created section. They will be overridden in | |
2396 | _bfd_elf_make_section_from_shdr anyway. */ | |
2397 | if (abfd->direction != read_direction | |
2398 | || (sec->flags & SEC_LINKER_CREATED) != 0) | |
2f89ff8d | 2399 | { |
a31501e9 L |
2400 | ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); |
2401 | if (ssect != NULL) | |
2402 | { | |
2403 | elf_section_type (sec) = ssect->type; | |
2404 | elf_section_flags (sec) = ssect->attr; | |
2405 | } | |
2f89ff8d L |
2406 | } |
2407 | ||
bf572ba0 | 2408 | /* Indicate whether or not this section should use RELA relocations. */ |
68bfbfcc | 2409 | sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; |
bf572ba0 | 2410 | |
b34976b6 | 2411 | return TRUE; |
252b5132 RH |
2412 | } |
2413 | ||
2414 | /* Create a new bfd section from an ELF program header. | |
2415 | ||
2416 | Since program segments have no names, we generate a synthetic name | |
2417 | of the form segment<NUM>, where NUM is generally the index in the | |
2418 | program header table. For segments that are split (see below) we | |
2419 | generate the names segment<NUM>a and segment<NUM>b. | |
2420 | ||
2421 | Note that some program segments may have a file size that is different than | |
2422 | (less than) the memory size. All this means is that at execution the | |
2423 | system must allocate the amount of memory specified by the memory size, | |
2424 | but only initialize it with the first "file size" bytes read from the | |
2425 | file. This would occur for example, with program segments consisting | |
2426 | of combined data+bss. | |
2427 | ||
2428 | To handle the above situation, this routine generates TWO bfd sections | |
2429 | for the single program segment. The first has the length specified by | |
2430 | the file size of the segment, and the second has the length specified | |
2431 | by the difference between the two sizes. In effect, the segment is split | |
2432 | into it's initialized and uninitialized parts. | |
2433 | ||
2434 | */ | |
2435 | ||
b34976b6 | 2436 | bfd_boolean |
217aa764 AM |
2437 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2438 | Elf_Internal_Phdr *hdr, | |
2439 | int index, | |
2440 | const char *typename) | |
252b5132 RH |
2441 | { |
2442 | asection *newsect; | |
2443 | char *name; | |
2444 | char namebuf[64]; | |
d4c88bbb | 2445 | size_t len; |
252b5132 RH |
2446 | int split; |
2447 | ||
2448 | split = ((hdr->p_memsz > 0) | |
2449 | && (hdr->p_filesz > 0) | |
2450 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2451 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2452 | len = strlen (namebuf) + 1; |
217aa764 | 2453 | name = bfd_alloc (abfd, len); |
252b5132 | 2454 | if (!name) |
b34976b6 | 2455 | return FALSE; |
d4c88bbb | 2456 | memcpy (name, namebuf, len); |
252b5132 RH |
2457 | newsect = bfd_make_section (abfd, name); |
2458 | if (newsect == NULL) | |
b34976b6 | 2459 | return FALSE; |
252b5132 RH |
2460 | newsect->vma = hdr->p_vaddr; |
2461 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2462 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2463 | newsect->filepos = hdr->p_offset; |
2464 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2465 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2466 | if (hdr->p_type == PT_LOAD) |
2467 | { | |
2468 | newsect->flags |= SEC_ALLOC; | |
2469 | newsect->flags |= SEC_LOAD; | |
2470 | if (hdr->p_flags & PF_X) | |
2471 | { | |
2472 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2473 | may be data. */ |
252b5132 RH |
2474 | newsect->flags |= SEC_CODE; |
2475 | } | |
2476 | } | |
2477 | if (!(hdr->p_flags & PF_W)) | |
2478 | { | |
2479 | newsect->flags |= SEC_READONLY; | |
2480 | } | |
2481 | ||
2482 | if (split) | |
2483 | { | |
27ac83bf | 2484 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2485 | len = strlen (namebuf) + 1; |
217aa764 | 2486 | name = bfd_alloc (abfd, len); |
252b5132 | 2487 | if (!name) |
b34976b6 | 2488 | return FALSE; |
d4c88bbb | 2489 | memcpy (name, namebuf, len); |
252b5132 RH |
2490 | newsect = bfd_make_section (abfd, name); |
2491 | if (newsect == NULL) | |
b34976b6 | 2492 | return FALSE; |
252b5132 RH |
2493 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2494 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2495 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2496 | if (hdr->p_type == PT_LOAD) |
2497 | { | |
2498 | newsect->flags |= SEC_ALLOC; | |
2499 | if (hdr->p_flags & PF_X) | |
2500 | newsect->flags |= SEC_CODE; | |
2501 | } | |
2502 | if (!(hdr->p_flags & PF_W)) | |
2503 | newsect->flags |= SEC_READONLY; | |
2504 | } | |
2505 | ||
b34976b6 | 2506 | return TRUE; |
252b5132 RH |
2507 | } |
2508 | ||
b34976b6 | 2509 | bfd_boolean |
217aa764 | 2510 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2511 | { |
9c5bfbb7 | 2512 | const struct elf_backend_data *bed; |
20cfcaae NC |
2513 | |
2514 | switch (hdr->p_type) | |
2515 | { | |
2516 | case PT_NULL: | |
2517 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2518 | ||
2519 | case PT_LOAD: | |
2520 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2521 | ||
2522 | case PT_DYNAMIC: | |
2523 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2524 | ||
2525 | case PT_INTERP: | |
2526 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2527 | ||
2528 | case PT_NOTE: | |
2529 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2530 | return FALSE; |
217aa764 | 2531 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2532 | return FALSE; |
2533 | return TRUE; | |
20cfcaae NC |
2534 | |
2535 | case PT_SHLIB: | |
2536 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2537 | ||
2538 | case PT_PHDR: | |
2539 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2540 | ||
811072d8 RM |
2541 | case PT_GNU_EH_FRAME: |
2542 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2543 | "eh_frame_hdr"); | |
2544 | ||
9ee5e499 JJ |
2545 | case PT_GNU_STACK: |
2546 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2547 | ||
8c37241b JJ |
2548 | case PT_GNU_RELRO: |
2549 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2550 | ||
20cfcaae | 2551 | default: |
8c1acd09 | 2552 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2553 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2554 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2555 | } |
2556 | } | |
2557 | ||
23bc299b | 2558 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2559 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2560 | relocations; otherwise, we use REL relocations. */ |
2561 | ||
b34976b6 | 2562 | bfd_boolean |
217aa764 AM |
2563 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2564 | Elf_Internal_Shdr *rel_hdr, | |
2565 | asection *asect, | |
2566 | bfd_boolean use_rela_p) | |
23bc299b MM |
2567 | { |
2568 | char *name; | |
9c5bfbb7 | 2569 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2570 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2571 | |
dc810e39 | 2572 | name = bfd_alloc (abfd, amt); |
23bc299b | 2573 | if (name == NULL) |
b34976b6 | 2574 | return FALSE; |
23bc299b MM |
2575 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2576 | rel_hdr->sh_name = | |
2b0f7ef9 | 2577 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2578 | FALSE); |
23bc299b | 2579 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2580 | return FALSE; |
23bc299b MM |
2581 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2582 | rel_hdr->sh_entsize = (use_rela_p | |
2583 | ? bed->s->sizeof_rela | |
2584 | : bed->s->sizeof_rel); | |
45d6a902 | 2585 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2586 | rel_hdr->sh_flags = 0; |
2587 | rel_hdr->sh_addr = 0; | |
2588 | rel_hdr->sh_size = 0; | |
2589 | rel_hdr->sh_offset = 0; | |
2590 | ||
b34976b6 | 2591 | return TRUE; |
23bc299b MM |
2592 | } |
2593 | ||
252b5132 RH |
2594 | /* Set up an ELF internal section header for a section. */ |
2595 | ||
252b5132 | 2596 | static void |
217aa764 | 2597 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2598 | { |
9c5bfbb7 | 2599 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2600 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2601 | Elf_Internal_Shdr *this_hdr; |
2602 | ||
2603 | if (*failedptr) | |
2604 | { | |
2605 | /* We already failed; just get out of the bfd_map_over_sections | |
2606 | loop. */ | |
2607 | return; | |
2608 | } | |
2609 | ||
2610 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2611 | ||
e57b5356 AM |
2612 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2613 | asect->name, FALSE); | |
2614 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2615 | { |
b34976b6 | 2616 | *failedptr = TRUE; |
252b5132 RH |
2617 | return; |
2618 | } | |
2619 | ||
2620 | this_hdr->sh_flags = 0; | |
2621 | ||
2622 | if ((asect->flags & SEC_ALLOC) != 0 | |
2623 | || asect->user_set_vma) | |
2624 | this_hdr->sh_addr = asect->vma; | |
2625 | else | |
2626 | this_hdr->sh_addr = 0; | |
2627 | ||
2628 | this_hdr->sh_offset = 0; | |
eea6121a | 2629 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2630 | this_hdr->sh_link = 0; |
2631 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2632 | /* The sh_entsize and sh_info fields may have been set already by | |
2633 | copy_private_section_data. */ | |
2634 | ||
2635 | this_hdr->bfd_section = asect; | |
2636 | this_hdr->contents = NULL; | |
2637 | ||
3cddba1e L |
2638 | /* If the section type is unspecified, we set it based on |
2639 | asect->flags. */ | |
2640 | if (this_hdr->sh_type == SHT_NULL) | |
2641 | { | |
45c5e9ed L |
2642 | if ((asect->flags & SEC_GROUP) != 0) |
2643 | { | |
2644 | /* We also need to mark SHF_GROUP here for relocatable | |
2645 | link. */ | |
2646 | struct bfd_link_order *l; | |
2647 | asection *elt; | |
2648 | ||
8423293d | 2649 | for (l = asect->map_head.link_order; l != NULL; l = l->next) |
45c5e9ed L |
2650 | if (l->type == bfd_indirect_link_order |
2651 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2652 | do | |
2653 | { | |
2654 | /* The name is not important. Anything will do. */ | |
2655 | elf_group_name (elt->output_section) = "G"; | |
2656 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2657 | ||
2658 | elt = elf_next_in_group (elt); | |
2659 | /* During a relocatable link, the lists are | |
2660 | circular. */ | |
2661 | } | |
2662 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2663 | ||
2664 | this_hdr->sh_type = SHT_GROUP; | |
2665 | } | |
2666 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2667 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2668 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2669 | this_hdr->sh_type = SHT_NOBITS; | |
2670 | else | |
2671 | this_hdr->sh_type = SHT_PROGBITS; | |
2672 | } | |
2673 | ||
2f89ff8d | 2674 | switch (this_hdr->sh_type) |
252b5132 | 2675 | { |
2f89ff8d | 2676 | default: |
2f89ff8d L |
2677 | break; |
2678 | ||
2679 | case SHT_STRTAB: | |
2680 | case SHT_INIT_ARRAY: | |
2681 | case SHT_FINI_ARRAY: | |
2682 | case SHT_PREINIT_ARRAY: | |
2683 | case SHT_NOTE: | |
2684 | case SHT_NOBITS: | |
2685 | case SHT_PROGBITS: | |
2686 | break; | |
2687 | ||
2688 | case SHT_HASH: | |
c7ac6ff8 | 2689 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2690 | break; |
5de3bf90 | 2691 | |
2f89ff8d | 2692 | case SHT_DYNSYM: |
252b5132 | 2693 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2694 | break; |
2695 | ||
2696 | case SHT_DYNAMIC: | |
252b5132 | 2697 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2698 | break; |
2699 | ||
2700 | case SHT_RELA: | |
2701 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2702 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2703 | break; | |
2704 | ||
2705 | case SHT_REL: | |
2706 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2707 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2708 | break; | |
2709 | ||
2710 | case SHT_GNU_versym: | |
252b5132 | 2711 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2712 | break; |
2713 | ||
2714 | case SHT_GNU_verdef: | |
252b5132 RH |
2715 | this_hdr->sh_entsize = 0; |
2716 | /* objcopy or strip will copy over sh_info, but may not set | |
2717 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2718 | zero. */ | |
2719 | if (this_hdr->sh_info == 0) | |
2720 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2721 | else | |
2722 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2723 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2724 | break; |
2725 | ||
2726 | case SHT_GNU_verneed: | |
252b5132 RH |
2727 | this_hdr->sh_entsize = 0; |
2728 | /* objcopy or strip will copy over sh_info, but may not set | |
2729 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2730 | zero. */ | |
2731 | if (this_hdr->sh_info == 0) | |
2732 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2733 | else | |
2734 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2735 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2736 | break; |
2737 | ||
2738 | case SHT_GROUP: | |
dbb410c3 | 2739 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2740 | break; |
dbb410c3 | 2741 | } |
252b5132 RH |
2742 | |
2743 | if ((asect->flags & SEC_ALLOC) != 0) | |
2744 | this_hdr->sh_flags |= SHF_ALLOC; | |
2745 | if ((asect->flags & SEC_READONLY) == 0) | |
2746 | this_hdr->sh_flags |= SHF_WRITE; | |
2747 | if ((asect->flags & SEC_CODE) != 0) | |
2748 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2749 | if ((asect->flags & SEC_MERGE) != 0) |
2750 | { | |
2751 | this_hdr->sh_flags |= SHF_MERGE; | |
2752 | this_hdr->sh_entsize = asect->entsize; | |
2753 | if ((asect->flags & SEC_STRINGS) != 0) | |
2754 | this_hdr->sh_flags |= SHF_STRINGS; | |
2755 | } | |
1126897b | 2756 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2757 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2758 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2759 | { |
2760 | this_hdr->sh_flags |= SHF_TLS; | |
eea6121a | 2761 | if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) |
704afa60 JJ |
2762 | { |
2763 | struct bfd_link_order *o; | |
b34976b6 | 2764 | |
704afa60 | 2765 | this_hdr->sh_size = 0; |
8423293d | 2766 | for (o = asect->map_head.link_order; o != NULL; o = o->next) |
704afa60 JJ |
2767 | if (this_hdr->sh_size < o->offset + o->size) |
2768 | this_hdr->sh_size = o->offset + o->size; | |
2769 | if (this_hdr->sh_size) | |
2770 | this_hdr->sh_type = SHT_NOBITS; | |
2771 | } | |
2772 | } | |
252b5132 RH |
2773 | |
2774 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2775 | if (bed->elf_backend_fake_sections |
2776 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2777 | *failedptr = TRUE; |
252b5132 RH |
2778 | |
2779 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2780 | SHT_REL[A] section. If two relocation sections are required for |
2781 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2782 | create the other. */ |
23bc299b | 2783 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2784 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2785 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2786 | asect, |
68bfbfcc | 2787 | asect->use_rela_p)) |
b34976b6 | 2788 | *failedptr = TRUE; |
252b5132 RH |
2789 | } |
2790 | ||
dbb410c3 AM |
2791 | /* Fill in the contents of a SHT_GROUP section. */ |
2792 | ||
1126897b | 2793 | void |
217aa764 | 2794 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2795 | { |
217aa764 | 2796 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2797 | unsigned long symindx; |
9dce4196 | 2798 | asection *elt, *first; |
dbb410c3 AM |
2799 | unsigned char *loc; |
2800 | struct bfd_link_order *l; | |
b34976b6 | 2801 | bfd_boolean gas; |
dbb410c3 | 2802 | |
7e4111ad L |
2803 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2804 | elfxx-ia64.c. */ | |
2805 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2806 | || *failedptr) |
2807 | return; | |
2808 | ||
1126897b AM |
2809 | symindx = 0; |
2810 | if (elf_group_id (sec) != NULL) | |
2811 | symindx = elf_group_id (sec)->udata.i; | |
2812 | ||
2813 | if (symindx == 0) | |
2814 | { | |
2815 | /* If called from the assembler, swap_out_syms will have set up | |
2816 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2817 | if (elf_section_syms (abfd) != NULL) | |
2818 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2819 | else | |
2820 | symindx = sec->target_index; | |
2821 | } | |
dbb410c3 AM |
2822 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2823 | ||
1126897b | 2824 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2825 | gas = TRUE; |
dbb410c3 AM |
2826 | if (sec->contents == NULL) |
2827 | { | |
b34976b6 | 2828 | gas = FALSE; |
eea6121a | 2829 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2830 | |
2831 | /* Arrange for the section to be written out. */ | |
2832 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2833 | if (sec->contents == NULL) |
2834 | { | |
b34976b6 | 2835 | *failedptr = TRUE; |
dbb410c3 AM |
2836 | return; |
2837 | } | |
2838 | } | |
2839 | ||
eea6121a | 2840 | loc = sec->contents + sec->size; |
dbb410c3 | 2841 | |
9dce4196 AM |
2842 | /* Get the pointer to the first section in the group that gas |
2843 | squirreled away here. objcopy arranges for this to be set to the | |
2844 | start of the input section group. */ | |
2845 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2846 | |
2847 | /* First element is a flag word. Rest of section is elf section | |
2848 | indices for all the sections of the group. Write them backwards | |
2849 | just to keep the group in the same order as given in .section | |
2850 | directives, not that it matters. */ | |
2851 | while (elt != NULL) | |
2852 | { | |
9dce4196 AM |
2853 | asection *s; |
2854 | unsigned int idx; | |
2855 | ||
dbb410c3 | 2856 | loc -= 4; |
9dce4196 AM |
2857 | s = elt; |
2858 | if (!gas) | |
2859 | s = s->output_section; | |
2860 | idx = 0; | |
2861 | if (s != NULL) | |
2862 | idx = elf_section_data (s)->this_idx; | |
2863 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2864 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2865 | if (elt == first) |
2866 | break; | |
dbb410c3 AM |
2867 | } |
2868 | ||
2869 | /* If this is a relocatable link, then the above did nothing because | |
2870 | SEC is the output section. Look through the input sections | |
2871 | instead. */ | |
8423293d | 2872 | for (l = sec->map_head.link_order; l != NULL; l = l->next) |
dbb410c3 | 2873 | if (l->type == bfd_indirect_link_order |
945906ff | 2874 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2875 | do |
2876 | { | |
2877 | loc -= 4; | |
2878 | H_PUT_32 (abfd, | |
2879 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2880 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2881 | /* During a relocatable link, the lists are circular. */ |
2882 | } | |
945906ff | 2883 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2884 | |
3d7f7666 | 2885 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2886 | abort (); |
dbb410c3 | 2887 | |
9dce4196 | 2888 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2889 | } |
2890 | ||
252b5132 RH |
2891 | /* Assign all ELF section numbers. The dummy first section is handled here |
2892 | too. The link/info pointers for the standard section types are filled | |
2893 | in here too, while we're at it. */ | |
2894 | ||
b34976b6 | 2895 | static bfd_boolean |
da9f89d4 | 2896 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2897 | { |
2898 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2899 | asection *sec; | |
2b0f7ef9 | 2900 | unsigned int section_number, secn; |
252b5132 | 2901 | Elf_Internal_Shdr **i_shdrp; |
dc810e39 | 2902 | bfd_size_type amt; |
47cc2cf5 | 2903 | struct bfd_elf_section_data *d; |
252b5132 RH |
2904 | |
2905 | section_number = 1; | |
2906 | ||
2b0f7ef9 JJ |
2907 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2908 | ||
da9f89d4 L |
2909 | /* SHT_GROUP sections are in relocatable files only. */ |
2910 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2911 | { |
da9f89d4 | 2912 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2913 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2914 | { |
5daa8fe7 | 2915 | d = elf_section_data (sec); |
da9f89d4 L |
2916 | |
2917 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2918 | { | |
5daa8fe7 | 2919 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2920 | { |
2921 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2922 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2923 | abfd->section_count--; |
da9f89d4 L |
2924 | } |
2925 | else | |
2926 | { | |
2927 | if (section_number == SHN_LORESERVE) | |
2928 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2929 | d->this_idx = section_number++; | |
2930 | } | |
2931 | } | |
47cc2cf5 PB |
2932 | } |
2933 | } | |
2934 | ||
2935 | for (sec = abfd->sections; sec; sec = sec->next) | |
2936 | { | |
2937 | d = elf_section_data (sec); | |
2938 | ||
2939 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2940 | { | |
2941 | if (section_number == SHN_LORESERVE) | |
2942 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2943 | d->this_idx = section_number++; | |
2944 | } | |
2b0f7ef9 | 2945 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2946 | if ((sec->flags & SEC_RELOC) == 0) |
2947 | d->rel_idx = 0; | |
2948 | else | |
2b0f7ef9 | 2949 | { |
9ad5cbcf AM |
2950 | if (section_number == SHN_LORESERVE) |
2951 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2952 | d->rel_idx = section_number++; |
2953 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2954 | } | |
23bc299b MM |
2955 | |
2956 | if (d->rel_hdr2) | |
2b0f7ef9 | 2957 | { |
9ad5cbcf AM |
2958 | if (section_number == SHN_LORESERVE) |
2959 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2960 | d->rel_idx2 = section_number++; |
2961 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2962 | } | |
23bc299b MM |
2963 | else |
2964 | d->rel_idx2 = 0; | |
252b5132 RH |
2965 | } |
2966 | ||
9ad5cbcf AM |
2967 | if (section_number == SHN_LORESERVE) |
2968 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2969 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2970 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2971 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2972 | |
2973 | if (bfd_get_symcount (abfd) > 0) | |
2974 | { | |
9ad5cbcf AM |
2975 | if (section_number == SHN_LORESERVE) |
2976 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2977 | t->symtab_section = section_number++; |
2b0f7ef9 | 2978 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2979 | if (section_number > SHN_LORESERVE - 2) |
2980 | { | |
2981 | if (section_number == SHN_LORESERVE) | |
2982 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2983 | t->symtab_shndx_section = section_number++; | |
2984 | t->symtab_shndx_hdr.sh_name | |
2985 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2986 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2987 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2988 | return FALSE; |
9ad5cbcf AM |
2989 | } |
2990 | if (section_number == SHN_LORESERVE) | |
2991 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2992 | t->strtab_section = section_number++; |
2b0f7ef9 | 2993 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2994 | } |
2995 | ||
2b0f7ef9 JJ |
2996 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2997 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2998 | |
2999 | elf_numsections (abfd) = section_number; | |
252b5132 | 3000 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
3001 | if (section_number > SHN_LORESERVE) |
3002 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
3003 | |
3004 | /* Set up the list of section header pointers, in agreement with the | |
3005 | indices. */ | |
dc810e39 | 3006 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
217aa764 | 3007 | i_shdrp = bfd_zalloc (abfd, amt); |
252b5132 | 3008 | if (i_shdrp == NULL) |
b34976b6 | 3009 | return FALSE; |
252b5132 | 3010 | |
dc810e39 | 3011 | amt = sizeof (Elf_Internal_Shdr); |
217aa764 | 3012 | i_shdrp[0] = bfd_zalloc (abfd, amt); |
252b5132 RH |
3013 | if (i_shdrp[0] == NULL) |
3014 | { | |
3015 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 3016 | return FALSE; |
252b5132 | 3017 | } |
252b5132 RH |
3018 | |
3019 | elf_elfsections (abfd) = i_shdrp; | |
3020 | ||
3021 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
3022 | if (bfd_get_symcount (abfd) > 0) | |
3023 | { | |
3024 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
3025 | if (elf_numsections (abfd) > SHN_LORESERVE) |
3026 | { | |
3027 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
3028 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
3029 | } | |
252b5132 RH |
3030 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
3031 | t->symtab_hdr.sh_link = t->strtab_section; | |
3032 | } | |
38ce5b11 | 3033 | |
252b5132 RH |
3034 | for (sec = abfd->sections; sec; sec = sec->next) |
3035 | { | |
3036 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
3037 | asection *s; | |
3038 | const char *name; | |
3039 | ||
3040 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3041 | if (d->rel_idx != 0) | |
3042 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3043 | if (d->rel_idx2 != 0) |
3044 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3045 | |
3046 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3047 | ||
3048 | /* sh_link of a reloc section is the section index of the symbol | |
3049 | table. sh_info is the section index of the section to which | |
3050 | the relocation entries apply. */ | |
3051 | if (d->rel_idx != 0) | |
3052 | { | |
3053 | d->rel_hdr.sh_link = t->symtab_section; | |
3054 | d->rel_hdr.sh_info = d->this_idx; | |
3055 | } | |
23bc299b MM |
3056 | if (d->rel_idx2 != 0) |
3057 | { | |
3058 | d->rel_hdr2->sh_link = t->symtab_section; | |
3059 | d->rel_hdr2->sh_info = d->this_idx; | |
3060 | } | |
252b5132 | 3061 | |
38ce5b11 L |
3062 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3063 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3064 | { | |
3065 | s = elf_linked_to_section (sec); | |
3066 | if (s) | |
3067 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3068 | else | |
3069 | { | |
3070 | struct bfd_link_order *p; | |
3071 | ||
3072 | /* Find out what the corresponding section in output | |
3073 | is. */ | |
8423293d | 3074 | for (p = sec->map_head.link_order; p != NULL; p = p->next) |
38ce5b11 L |
3075 | { |
3076 | s = p->u.indirect.section; | |
3077 | if (p->type == bfd_indirect_link_order | |
3078 | && (bfd_get_flavour (s->owner) | |
3079 | == bfd_target_elf_flavour)) | |
3080 | { | |
3081 | Elf_Internal_Shdr ** const elf_shdrp | |
3082 | = elf_elfsections (s->owner); | |
3083 | int elfsec | |
3084 | = _bfd_elf_section_from_bfd_section (s->owner, s); | |
3085 | elfsec = elf_shdrp[elfsec]->sh_link; | |
185d09ad L |
3086 | /* PR 290: |
3087 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
ff01938b | 3088 | SHF_LINK_ORDER. But it doesn't set the sh_link or |
185d09ad L |
3089 | sh_info fields. Hence we could get the situation |
3090 | where elfsec is 0. */ | |
3091 | if (elfsec == 0) | |
3092 | { | |
3093 | const struct elf_backend_data *bed | |
3094 | = get_elf_backend_data (abfd); | |
3095 | if (bed->link_order_error_handler) | |
d003868e | 3096 | bed->link_order_error_handler |
28b13744 | 3097 | (_("%B: warning: sh_link not set for section `%A'"), |
d003868e | 3098 | abfd, s); |
185d09ad L |
3099 | } |
3100 | else | |
3101 | { | |
01b3c8ab L |
3102 | s = elf_shdrp[elfsec]->bfd_section; |
3103 | if (elf_discarded_section (s)) | |
3104 | { | |
3105 | asection *kept; | |
3106 | (*_bfd_error_handler) | |
3107 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3108 | abfd, d->this_hdr.bfd_section, | |
3109 | s, s->owner); | |
3110 | /* Point to the kept section if it has | |
3111 | the same size as the discarded | |
3112 | one. */ | |
3113 | kept = _bfd_elf_check_kept_section (s); | |
3114 | if (kept == NULL) | |
3115 | { | |
3116 | bfd_set_error (bfd_error_bad_value); | |
3117 | return FALSE; | |
3118 | } | |
2796fd96 | 3119 | s = kept; |
01b3c8ab L |
3120 | } |
3121 | s = s->output_section; | |
185d09ad L |
3122 | BFD_ASSERT (s != NULL); |
3123 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3124 | } | |
38ce5b11 L |
3125 | break; |
3126 | } | |
3127 | } | |
3128 | } | |
3129 | } | |
3130 | ||
252b5132 RH |
3131 | switch (d->this_hdr.sh_type) |
3132 | { | |
3133 | case SHT_REL: | |
3134 | case SHT_RELA: | |
3135 | /* A reloc section which we are treating as a normal BFD | |
3136 | section. sh_link is the section index of the symbol | |
3137 | table. sh_info is the section index of the section to | |
3138 | which the relocation entries apply. We assume that an | |
3139 | allocated reloc section uses the dynamic symbol table. | |
3140 | FIXME: How can we be sure? */ | |
3141 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3142 | if (s != NULL) | |
3143 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3144 | ||
3145 | /* We look up the section the relocs apply to by name. */ | |
3146 | name = sec->name; | |
3147 | if (d->this_hdr.sh_type == SHT_REL) | |
3148 | name += 4; | |
3149 | else | |
3150 | name += 5; | |
3151 | s = bfd_get_section_by_name (abfd, name); | |
3152 | if (s != NULL) | |
3153 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3154 | break; | |
3155 | ||
3156 | case SHT_STRTAB: | |
3157 | /* We assume that a section named .stab*str is a stabs | |
3158 | string section. We look for a section with the same name | |
3159 | but without the trailing ``str'', and set its sh_link | |
3160 | field to point to this section. */ | |
3161 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3162 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3163 | { | |
3164 | size_t len; | |
3165 | char *alc; | |
3166 | ||
3167 | len = strlen (sec->name); | |
217aa764 | 3168 | alc = bfd_malloc (len - 2); |
252b5132 | 3169 | if (alc == NULL) |
b34976b6 | 3170 | return FALSE; |
d4c88bbb | 3171 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3172 | alc[len - 3] = '\0'; |
3173 | s = bfd_get_section_by_name (abfd, alc); | |
3174 | free (alc); | |
3175 | if (s != NULL) | |
3176 | { | |
3177 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3178 | ||
3179 | /* This is a .stab section. */ | |
0594c12d AM |
3180 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3181 | elf_section_data (s)->this_hdr.sh_entsize | |
3182 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3183 | } |
3184 | } | |
3185 | break; | |
3186 | ||
3187 | case SHT_DYNAMIC: | |
3188 | case SHT_DYNSYM: | |
3189 | case SHT_GNU_verneed: | |
3190 | case SHT_GNU_verdef: | |
3191 | /* sh_link is the section header index of the string table | |
3192 | used for the dynamic entries, or the symbol table, or the | |
3193 | version strings. */ | |
3194 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3195 | if (s != NULL) | |
3196 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3197 | break; | |
3198 | ||
7f1204bb JJ |
3199 | case SHT_GNU_LIBLIST: |
3200 | /* sh_link is the section header index of the prelink library | |
3201 | list | |
3202 | used for the dynamic entries, or the symbol table, or the | |
3203 | version strings. */ | |
3204 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3205 | ? ".dynstr" : ".gnu.libstr"); | |
3206 | if (s != NULL) | |
3207 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3208 | break; | |
3209 | ||
252b5132 RH |
3210 | case SHT_HASH: |
3211 | case SHT_GNU_versym: | |
3212 | /* sh_link is the section header index of the symbol table | |
3213 | this hash table or version table is for. */ | |
3214 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3215 | if (s != NULL) | |
3216 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3217 | break; | |
dbb410c3 AM |
3218 | |
3219 | case SHT_GROUP: | |
3220 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3221 | } |
3222 | } | |
3223 | ||
2b0f7ef9 | 3224 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3225 | if (i_shdrp[secn] == NULL) |
3226 | i_shdrp[secn] = i_shdrp[0]; | |
3227 | else | |
3228 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3229 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3230 | return TRUE; |
252b5132 RH |
3231 | } |
3232 | ||
3233 | /* Map symbol from it's internal number to the external number, moving | |
3234 | all local symbols to be at the head of the list. */ | |
3235 | ||
268b6b39 | 3236 | static int |
217aa764 | 3237 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3238 | { |
3239 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3240 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3241 | if (bed->elf_backend_sym_is_global) |
3242 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3243 | |
3244 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3245 | || bfd_is_und_section (bfd_get_section (sym)) | |
3246 | || bfd_is_com_section (bfd_get_section (sym))); | |
3247 | } | |
3248 | ||
b34976b6 | 3249 | static bfd_boolean |
217aa764 | 3250 | elf_map_symbols (bfd *abfd) |
252b5132 | 3251 | { |
dc810e39 | 3252 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3253 | asymbol **syms = bfd_get_outsymbols (abfd); |
3254 | asymbol **sect_syms; | |
dc810e39 AM |
3255 | unsigned int num_locals = 0; |
3256 | unsigned int num_globals = 0; | |
3257 | unsigned int num_locals2 = 0; | |
3258 | unsigned int num_globals2 = 0; | |
252b5132 | 3259 | int max_index = 0; |
dc810e39 | 3260 | unsigned int idx; |
252b5132 RH |
3261 | asection *asect; |
3262 | asymbol **new_syms; | |
dc810e39 | 3263 | bfd_size_type amt; |
252b5132 RH |
3264 | |
3265 | #ifdef DEBUG | |
3266 | fprintf (stderr, "elf_map_symbols\n"); | |
3267 | fflush (stderr); | |
3268 | #endif | |
3269 | ||
252b5132 RH |
3270 | for (asect = abfd->sections; asect; asect = asect->next) |
3271 | { | |
3272 | if (max_index < asect->index) | |
3273 | max_index = asect->index; | |
3274 | } | |
3275 | ||
3276 | max_index++; | |
dc810e39 | 3277 | amt = max_index * sizeof (asymbol *); |
217aa764 | 3278 | sect_syms = bfd_zalloc (abfd, amt); |
252b5132 | 3279 | if (sect_syms == NULL) |
b34976b6 | 3280 | return FALSE; |
252b5132 | 3281 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3282 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3283 | |
079e9a2f AM |
3284 | /* Init sect_syms entries for any section symbols we have already |
3285 | decided to output. */ | |
252b5132 RH |
3286 | for (idx = 0; idx < symcount; idx++) |
3287 | { | |
dc810e39 | 3288 | asymbol *sym = syms[idx]; |
c044fabd | 3289 | |
252b5132 RH |
3290 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3291 | && sym->value == 0) | |
3292 | { | |
3293 | asection *sec; | |
3294 | ||
3295 | sec = sym->section; | |
3296 | ||
3297 | if (sec->owner != NULL) | |
3298 | { | |
3299 | if (sec->owner != abfd) | |
3300 | { | |
3301 | if (sec->output_offset != 0) | |
3302 | continue; | |
c044fabd | 3303 | |
252b5132 RH |
3304 | sec = sec->output_section; |
3305 | ||
079e9a2f AM |
3306 | /* Empty sections in the input files may have had a |
3307 | section symbol created for them. (See the comment | |
3308 | near the end of _bfd_generic_link_output_symbols in | |
3309 | linker.c). If the linker script discards such | |
3310 | sections then we will reach this point. Since we know | |
3311 | that we cannot avoid this case, we detect it and skip | |
3312 | the abort and the assignment to the sect_syms array. | |
3313 | To reproduce this particular case try running the | |
3314 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3315 | port that uses the generic linker. */ | |
252b5132 RH |
3316 | if (sec->owner == NULL) |
3317 | continue; | |
3318 | ||
3319 | BFD_ASSERT (sec->owner == abfd); | |
3320 | } | |
3321 | sect_syms[sec->index] = syms[idx]; | |
3322 | } | |
3323 | } | |
3324 | } | |
3325 | ||
252b5132 RH |
3326 | /* Classify all of the symbols. */ |
3327 | for (idx = 0; idx < symcount; idx++) | |
3328 | { | |
3329 | if (!sym_is_global (abfd, syms[idx])) | |
3330 | num_locals++; | |
3331 | else | |
3332 | num_globals++; | |
3333 | } | |
079e9a2f AM |
3334 | |
3335 | /* We will be adding a section symbol for each BFD section. Most normal | |
3336 | sections will already have a section symbol in outsymbols, but | |
3337 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3338 | at least in that case. */ | |
252b5132 RH |
3339 | for (asect = abfd->sections; asect; asect = asect->next) |
3340 | { | |
079e9a2f | 3341 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3342 | { |
079e9a2f | 3343 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3344 | num_locals++; |
3345 | else | |
3346 | num_globals++; | |
252b5132 RH |
3347 | } |
3348 | } | |
3349 | ||
3350 | /* Now sort the symbols so the local symbols are first. */ | |
dc810e39 | 3351 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
217aa764 | 3352 | new_syms = bfd_alloc (abfd, amt); |
dc810e39 | 3353 | |
252b5132 | 3354 | if (new_syms == NULL) |
b34976b6 | 3355 | return FALSE; |
252b5132 RH |
3356 | |
3357 | for (idx = 0; idx < symcount; idx++) | |
3358 | { | |
3359 | asymbol *sym = syms[idx]; | |
dc810e39 | 3360 | unsigned int i; |
252b5132 RH |
3361 | |
3362 | if (!sym_is_global (abfd, sym)) | |
3363 | i = num_locals2++; | |
3364 | else | |
3365 | i = num_locals + num_globals2++; | |
3366 | new_syms[i] = sym; | |
3367 | sym->udata.i = i + 1; | |
3368 | } | |
3369 | for (asect = abfd->sections; asect; asect = asect->next) | |
3370 | { | |
079e9a2f | 3371 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3372 | { |
079e9a2f | 3373 | asymbol *sym = asect->symbol; |
dc810e39 | 3374 | unsigned int i; |
252b5132 | 3375 | |
079e9a2f | 3376 | sect_syms[asect->index] = sym; |
252b5132 RH |
3377 | if (!sym_is_global (abfd, sym)) |
3378 | i = num_locals2++; | |
3379 | else | |
3380 | i = num_locals + num_globals2++; | |
3381 | new_syms[i] = sym; | |
3382 | sym->udata.i = i + 1; | |
3383 | } | |
3384 | } | |
3385 | ||
3386 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3387 | ||
3388 | elf_num_locals (abfd) = num_locals; | |
3389 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3390 | return TRUE; |
252b5132 RH |
3391 | } |
3392 | ||
3393 | /* Align to the maximum file alignment that could be required for any | |
3394 | ELF data structure. */ | |
3395 | ||
268b6b39 | 3396 | static inline file_ptr |
217aa764 | 3397 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3398 | { |
3399 | return (off + align - 1) & ~(align - 1); | |
3400 | } | |
3401 | ||
3402 | /* Assign a file position to a section, optionally aligning to the | |
3403 | required section alignment. */ | |
3404 | ||
217aa764 AM |
3405 | file_ptr |
3406 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3407 | file_ptr offset, | |
3408 | bfd_boolean align) | |
252b5132 RH |
3409 | { |
3410 | if (align) | |
3411 | { | |
3412 | unsigned int al; | |
3413 | ||
3414 | al = i_shdrp->sh_addralign; | |
3415 | if (al > 1) | |
3416 | offset = BFD_ALIGN (offset, al); | |
3417 | } | |
3418 | i_shdrp->sh_offset = offset; | |
3419 | if (i_shdrp->bfd_section != NULL) | |
3420 | i_shdrp->bfd_section->filepos = offset; | |
3421 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3422 | offset += i_shdrp->sh_size; | |
3423 | return offset; | |
3424 | } | |
3425 | ||
3426 | /* Compute the file positions we are going to put the sections at, and | |
3427 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3428 | is not NULL, this is being called by the ELF backend linker. */ | |
3429 | ||
b34976b6 | 3430 | bfd_boolean |
217aa764 AM |
3431 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3432 | struct bfd_link_info *link_info) | |
252b5132 | 3433 | { |
9c5bfbb7 | 3434 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3435 | bfd_boolean failed; |
4b6c0f2f | 3436 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3437 | Elf_Internal_Shdr *shstrtab_hdr; |
3438 | ||
3439 | if (abfd->output_has_begun) | |
b34976b6 | 3440 | return TRUE; |
252b5132 RH |
3441 | |
3442 | /* Do any elf backend specific processing first. */ | |
3443 | if (bed->elf_backend_begin_write_processing) | |
3444 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3445 | ||
3446 | if (! prep_headers (abfd)) | |
b34976b6 | 3447 | return FALSE; |
252b5132 | 3448 | |
e6c51ed4 NC |
3449 | /* Post process the headers if necessary. */ |
3450 | if (bed->elf_backend_post_process_headers) | |
3451 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3452 | ||
b34976b6 | 3453 | failed = FALSE; |
252b5132 RH |
3454 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3455 | if (failed) | |
b34976b6 | 3456 | return FALSE; |
252b5132 | 3457 | |
da9f89d4 | 3458 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3459 | return FALSE; |
252b5132 RH |
3460 | |
3461 | /* The backend linker builds symbol table information itself. */ | |
3462 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3463 | { | |
3464 | /* Non-zero if doing a relocatable link. */ | |
3465 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3466 | ||
3467 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3468 | return FALSE; |
252b5132 RH |
3469 | } |
3470 | ||
1126897b | 3471 | if (link_info == NULL) |
dbb410c3 | 3472 | { |
1126897b | 3473 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3474 | if (failed) |
b34976b6 | 3475 | return FALSE; |
dbb410c3 AM |
3476 | } |
3477 | ||
252b5132 RH |
3478 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3479 | /* sh_name was set in prep_headers. */ | |
3480 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3481 | shstrtab_hdr->sh_flags = 0; | |
3482 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3483 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3484 | shstrtab_hdr->sh_entsize = 0; |
3485 | shstrtab_hdr->sh_link = 0; | |
3486 | shstrtab_hdr->sh_info = 0; | |
3487 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3488 | shstrtab_hdr->sh_addralign = 1; | |
3489 | ||
c84fca4d | 3490 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3491 | return FALSE; |
252b5132 RH |
3492 | |
3493 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3494 | { | |
3495 | file_ptr off; | |
3496 | Elf_Internal_Shdr *hdr; | |
3497 | ||
3498 | off = elf_tdata (abfd)->next_file_pos; | |
3499 | ||
3500 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3501 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3502 | |
9ad5cbcf AM |
3503 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3504 | if (hdr->sh_size != 0) | |
b34976b6 | 3505 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3506 | |
252b5132 | 3507 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3508 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3509 | |
3510 | elf_tdata (abfd)->next_file_pos = off; | |
3511 | ||
3512 | /* Now that we know where the .strtab section goes, write it | |
3513 | out. */ | |
3514 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3515 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3516 | return FALSE; |
252b5132 RH |
3517 | _bfd_stringtab_free (strtab); |
3518 | } | |
3519 | ||
b34976b6 | 3520 | abfd->output_has_begun = TRUE; |
252b5132 | 3521 | |
b34976b6 | 3522 | return TRUE; |
252b5132 RH |
3523 | } |
3524 | ||
3525 | /* Create a mapping from a set of sections to a program segment. */ | |
3526 | ||
217aa764 AM |
3527 | static struct elf_segment_map * |
3528 | make_mapping (bfd *abfd, | |
3529 | asection **sections, | |
3530 | unsigned int from, | |
3531 | unsigned int to, | |
3532 | bfd_boolean phdr) | |
252b5132 RH |
3533 | { |
3534 | struct elf_segment_map *m; | |
3535 | unsigned int i; | |
3536 | asection **hdrpp; | |
dc810e39 | 3537 | bfd_size_type amt; |
252b5132 | 3538 | |
dc810e39 AM |
3539 | amt = sizeof (struct elf_segment_map); |
3540 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3541 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3542 | if (m == NULL) |
3543 | return NULL; | |
3544 | m->next = NULL; | |
3545 | m->p_type = PT_LOAD; | |
3546 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3547 | m->sections[i - from] = *hdrpp; | |
3548 | m->count = to - from; | |
3549 | ||
3550 | if (from == 0 && phdr) | |
3551 | { | |
3552 | /* Include the headers in the first PT_LOAD segment. */ | |
3553 | m->includes_filehdr = 1; | |
3554 | m->includes_phdrs = 1; | |
3555 | } | |
3556 | ||
3557 | return m; | |
3558 | } | |
3559 | ||
229fcec5 MM |
3560 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3561 | on failure. */ | |
3562 | ||
3563 | struct elf_segment_map * | |
3564 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3565 | { | |
3566 | struct elf_segment_map *m; | |
3567 | ||
3568 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3569 | if (m == NULL) | |
3570 | return NULL; | |
3571 | m->next = NULL; | |
3572 | m->p_type = PT_DYNAMIC; | |
3573 | m->count = 1; | |
3574 | m->sections[0] = dynsec; | |
3575 | ||
3576 | return m; | |
3577 | } | |
3578 | ||
252b5132 RH |
3579 | /* Set up a mapping from BFD sections to program segments. */ |
3580 | ||
b34976b6 | 3581 | static bfd_boolean |
217aa764 | 3582 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3583 | { |
3584 | asection **sections = NULL; | |
3585 | asection *s; | |
3586 | unsigned int i; | |
3587 | unsigned int count; | |
3588 | struct elf_segment_map *mfirst; | |
3589 | struct elf_segment_map **pm; | |
3590 | struct elf_segment_map *m; | |
3591 | asection *last_hdr; | |
baaff79e | 3592 | bfd_vma last_size; |
252b5132 RH |
3593 | unsigned int phdr_index; |
3594 | bfd_vma maxpagesize; | |
3595 | asection **hdrpp; | |
b34976b6 AM |
3596 | bfd_boolean phdr_in_segment = TRUE; |
3597 | bfd_boolean writable; | |
13ae64f3 JJ |
3598 | int tls_count = 0; |
3599 | asection *first_tls = NULL; | |
65765700 | 3600 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3601 | bfd_size_type amt; |
252b5132 RH |
3602 | |
3603 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3604 | return TRUE; |
252b5132 RH |
3605 | |
3606 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3607 | return TRUE; |
252b5132 RH |
3608 | |
3609 | /* Select the allocated sections, and sort them. */ | |
3610 | ||
dc810e39 | 3611 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
217aa764 | 3612 | sections = bfd_malloc (amt); |
252b5132 RH |
3613 | if (sections == NULL) |
3614 | goto error_return; | |
3615 | ||
3616 | i = 0; | |
3617 | for (s = abfd->sections; s != NULL; s = s->next) | |
3618 | { | |
3619 | if ((s->flags & SEC_ALLOC) != 0) | |
3620 | { | |
3621 | sections[i] = s; | |
3622 | ++i; | |
3623 | } | |
3624 | } | |
3625 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3626 | count = i; | |
3627 | ||
3628 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3629 | ||
3630 | /* Build the mapping. */ | |
3631 | ||
3632 | mfirst = NULL; | |
3633 | pm = &mfirst; | |
3634 | ||
3635 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3636 | the program headers and a PT_INTERP segment for the .interp | |
3637 | section. */ | |
3638 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3639 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3640 | { | |
dc810e39 | 3641 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3642 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3643 | if (m == NULL) |
3644 | goto error_return; | |
3645 | m->next = NULL; | |
3646 | m->p_type = PT_PHDR; | |
3647 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3648 | m->p_flags = PF_R | PF_X; | |
3649 | m->p_flags_valid = 1; | |
3650 | m->includes_phdrs = 1; | |
3651 | ||
3652 | *pm = m; | |
3653 | pm = &m->next; | |
3654 | ||
dc810e39 | 3655 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3656 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3657 | if (m == NULL) |
3658 | goto error_return; | |
3659 | m->next = NULL; | |
3660 | m->p_type = PT_INTERP; | |
3661 | m->count = 1; | |
3662 | m->sections[0] = s; | |
3663 | ||
3664 | *pm = m; | |
3665 | pm = &m->next; | |
3666 | } | |
3667 | ||
3668 | /* Look through the sections. We put sections in the same program | |
3669 | segment when the start of the second section can be placed within | |
3670 | a few bytes of the end of the first section. */ | |
3671 | last_hdr = NULL; | |
baaff79e | 3672 | last_size = 0; |
252b5132 RH |
3673 | phdr_index = 0; |
3674 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3675 | writable = FALSE; |
252b5132 RH |
3676 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3677 | if (dynsec != NULL | |
3678 | && (dynsec->flags & SEC_LOAD) == 0) | |
3679 | dynsec = NULL; | |
3680 | ||
3681 | /* Deal with -Ttext or something similar such that the first section | |
3682 | is not adjacent to the program headers. This is an | |
3683 | approximation, since at this point we don't know exactly how many | |
3684 | program headers we will need. */ | |
3685 | if (count > 0) | |
3686 | { | |
3687 | bfd_size_type phdr_size; | |
3688 | ||
3689 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3690 | if (phdr_size == 0) | |
3691 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3692 | if ((abfd->flags & D_PAGED) == 0 | |
3693 | || sections[0]->lma < phdr_size | |
3694 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3695 | phdr_in_segment = FALSE; |
252b5132 RH |
3696 | } |
3697 | ||
3698 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3699 | { | |
3700 | asection *hdr; | |
b34976b6 | 3701 | bfd_boolean new_segment; |
252b5132 RH |
3702 | |
3703 | hdr = *hdrpp; | |
3704 | ||
3705 | /* See if this section and the last one will fit in the same | |
3706 | segment. */ | |
3707 | ||
3708 | if (last_hdr == NULL) | |
3709 | { | |
3710 | /* If we don't have a segment yet, then we don't need a new | |
3711 | one (we build the last one after this loop). */ | |
b34976b6 | 3712 | new_segment = FALSE; |
252b5132 RH |
3713 | } |
3714 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3715 | { | |
3716 | /* If this section has a different relation between the | |
3717 | virtual address and the load address, then we need a new | |
3718 | segment. */ | |
b34976b6 | 3719 | new_segment = TRUE; |
252b5132 | 3720 | } |
baaff79e | 3721 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3722 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3723 | { | |
3724 | /* If putting this section in this segment would force us to | |
3725 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3726 | new_segment = TRUE; |
252b5132 | 3727 | } |
baaff79e JJ |
3728 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3729 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3730 | { |
3731 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3732 | nonloadable section in the same segment. |
3733 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3734 | new_segment = TRUE; |
252b5132 RH |
3735 | } |
3736 | else if ((abfd->flags & D_PAGED) == 0) | |
3737 | { | |
3738 | /* If the file is not demand paged, which means that we | |
3739 | don't require the sections to be correctly aligned in the | |
3740 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3741 | new_segment = FALSE; |
252b5132 RH |
3742 | } |
3743 | else if (! writable | |
3744 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3745 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3746 | & ~(maxpagesize - 1)) |
3747 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3748 | { |
3749 | /* We don't want to put a writable section in a read only | |
3750 | segment, unless they are on the same page in memory | |
3751 | anyhow. We already know that the last section does not | |
3752 | bring us past the current section on the page, so the | |
3753 | only case in which the new section is not on the same | |
3754 | page as the previous section is when the previous section | |
3755 | ends precisely on a page boundary. */ | |
b34976b6 | 3756 | new_segment = TRUE; |
252b5132 RH |
3757 | } |
3758 | else | |
3759 | { | |
3760 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3761 | new_segment = FALSE; |
252b5132 RH |
3762 | } |
3763 | ||
3764 | if (! new_segment) | |
3765 | { | |
3766 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3767 | writable = TRUE; |
baaff79e JJ |
3768 | last_hdr = hdr; |
3769 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3770 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3771 | last_size = hdr->size; |
baaff79e JJ |
3772 | else |
3773 | last_size = 0; | |
252b5132 RH |
3774 | continue; |
3775 | } | |
3776 | ||
3777 | /* We need a new program segment. We must create a new program | |
3778 | header holding all the sections from phdr_index until hdr. */ | |
3779 | ||
3780 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3781 | if (m == NULL) | |
3782 | goto error_return; | |
3783 | ||
3784 | *pm = m; | |
3785 | pm = &m->next; | |
3786 | ||
3787 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3788 | writable = TRUE; |
252b5132 | 3789 | else |
b34976b6 | 3790 | writable = FALSE; |
252b5132 RH |
3791 | |
3792 | last_hdr = hdr; | |
baaff79e JJ |
3793 | /* .tbss sections effectively have zero size. */ |
3794 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3795 | last_size = hdr->size; |
baaff79e JJ |
3796 | else |
3797 | last_size = 0; | |
252b5132 | 3798 | phdr_index = i; |
b34976b6 | 3799 | phdr_in_segment = FALSE; |
252b5132 RH |
3800 | } |
3801 | ||
3802 | /* Create a final PT_LOAD program segment. */ | |
3803 | if (last_hdr != NULL) | |
3804 | { | |
3805 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3806 | if (m == NULL) | |
3807 | goto error_return; | |
3808 | ||
3809 | *pm = m; | |
3810 | pm = &m->next; | |
3811 | } | |
3812 | ||
3813 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3814 | if (dynsec != NULL) | |
3815 | { | |
229fcec5 | 3816 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3817 | if (m == NULL) |
3818 | goto error_return; | |
252b5132 RH |
3819 | *pm = m; |
3820 | pm = &m->next; | |
3821 | } | |
3822 | ||
3823 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3824 | use bfd_get_section_by_name, because if we link together | |
3825 | nonloadable .note sections and loadable .note sections, we will | |
3826 | generate two .note sections in the output file. FIXME: Using | |
3827 | names for section types is bogus anyhow. */ | |
3828 | for (s = abfd->sections; s != NULL; s = s->next) | |
3829 | { | |
3830 | if ((s->flags & SEC_LOAD) != 0 | |
3831 | && strncmp (s->name, ".note", 5) == 0) | |
3832 | { | |
dc810e39 | 3833 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3834 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3835 | if (m == NULL) |
3836 | goto error_return; | |
3837 | m->next = NULL; | |
3838 | m->p_type = PT_NOTE; | |
3839 | m->count = 1; | |
3840 | m->sections[0] = s; | |
3841 | ||
3842 | *pm = m; | |
3843 | pm = &m->next; | |
3844 | } | |
13ae64f3 JJ |
3845 | if (s->flags & SEC_THREAD_LOCAL) |
3846 | { | |
3847 | if (! tls_count) | |
3848 | first_tls = s; | |
3849 | tls_count++; | |
3850 | } | |
3851 | } | |
3852 | ||
3853 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3854 | if (tls_count > 0) | |
3855 | { | |
3856 | int i; | |
3857 | ||
3858 | amt = sizeof (struct elf_segment_map); | |
3859 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3860 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3861 | if (m == NULL) |
3862 | goto error_return; | |
3863 | m->next = NULL; | |
3864 | m->p_type = PT_TLS; | |
3865 | m->count = tls_count; | |
3866 | /* Mandated PF_R. */ | |
3867 | m->p_flags = PF_R; | |
3868 | m->p_flags_valid = 1; | |
3869 | for (i = 0; i < tls_count; ++i) | |
3870 | { | |
3871 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3872 | m->sections[i] = first_tls; | |
3873 | first_tls = first_tls->next; | |
3874 | } | |
3875 | ||
3876 | *pm = m; | |
3877 | pm = &m->next; | |
252b5132 RH |
3878 | } |
3879 | ||
65765700 JJ |
3880 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3881 | segment. */ | |
126495ed AM |
3882 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3883 | if (eh_frame_hdr != NULL | |
3884 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3885 | { |
3886 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3887 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3888 | if (m == NULL) |
3889 | goto error_return; | |
3890 | m->next = NULL; | |
3891 | m->p_type = PT_GNU_EH_FRAME; | |
3892 | m->count = 1; | |
126495ed | 3893 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3894 | |
3895 | *pm = m; | |
3896 | pm = &m->next; | |
3897 | } | |
3898 | ||
9ee5e499 JJ |
3899 | if (elf_tdata (abfd)->stack_flags) |
3900 | { | |
3901 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3902 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3903 | if (m == NULL) |
3904 | goto error_return; | |
3905 | m->next = NULL; | |
3906 | m->p_type = PT_GNU_STACK; | |
3907 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3908 | m->p_flags_valid = 1; | |
3909 | ||
3910 | *pm = m; | |
3911 | pm = &m->next; | |
3912 | } | |
3913 | ||
8c37241b JJ |
3914 | if (elf_tdata (abfd)->relro) |
3915 | { | |
3916 | amt = sizeof (struct elf_segment_map); | |
3917 | m = bfd_zalloc (abfd, amt); | |
3918 | if (m == NULL) | |
3919 | goto error_return; | |
3920 | m->next = NULL; | |
3921 | m->p_type = PT_GNU_RELRO; | |
3922 | m->p_flags = PF_R; | |
3923 | m->p_flags_valid = 1; | |
3924 | ||
3925 | *pm = m; | |
3926 | pm = &m->next; | |
3927 | } | |
3928 | ||
252b5132 RH |
3929 | free (sections); |
3930 | sections = NULL; | |
3931 | ||
3932 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3933 | return TRUE; |
252b5132 RH |
3934 | |
3935 | error_return: | |
3936 | if (sections != NULL) | |
3937 | free (sections); | |
b34976b6 | 3938 | return FALSE; |
252b5132 RH |
3939 | } |
3940 | ||
3941 | /* Sort sections by address. */ | |
3942 | ||
3943 | static int | |
217aa764 | 3944 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3945 | { |
3946 | const asection *sec1 = *(const asection **) arg1; | |
3947 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3948 | bfd_size_type size1, size2; |
252b5132 RH |
3949 | |
3950 | /* Sort by LMA first, since this is the address used to | |
3951 | place the section into a segment. */ | |
3952 | if (sec1->lma < sec2->lma) | |
3953 | return -1; | |
3954 | else if (sec1->lma > sec2->lma) | |
3955 | return 1; | |
3956 | ||
3957 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3958 | the same, and this will do nothing. */ | |
3959 | if (sec1->vma < sec2->vma) | |
3960 | return -1; | |
3961 | else if (sec1->vma > sec2->vma) | |
3962 | return 1; | |
3963 | ||
3964 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3965 | ||
07c6e936 | 3966 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3967 | |
3968 | if (TOEND (sec1)) | |
3969 | { | |
3970 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3971 | { |
3972 | /* If the indicies are the same, do not return 0 | |
3973 | here, but continue to try the next comparison. */ | |
3974 | if (sec1->target_index - sec2->target_index != 0) | |
3975 | return sec1->target_index - sec2->target_index; | |
3976 | } | |
252b5132 RH |
3977 | else |
3978 | return 1; | |
3979 | } | |
00a7cdc5 | 3980 | else if (TOEND (sec2)) |
252b5132 RH |
3981 | return -1; |
3982 | ||
3983 | #undef TOEND | |
3984 | ||
00a7cdc5 NC |
3985 | /* Sort by size, to put zero sized sections |
3986 | before others at the same address. */ | |
252b5132 | 3987 | |
eea6121a AM |
3988 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3989 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3990 | |
3991 | if (size1 < size2) | |
252b5132 | 3992 | return -1; |
eecdbe52 | 3993 | if (size1 > size2) |
252b5132 RH |
3994 | return 1; |
3995 | ||
3996 | return sec1->target_index - sec2->target_index; | |
3997 | } | |
3998 | ||
340b6d91 AC |
3999 | /* Ian Lance Taylor writes: |
4000 | ||
4001 | We shouldn't be using % with a negative signed number. That's just | |
4002 | not good. We have to make sure either that the number is not | |
4003 | negative, or that the number has an unsigned type. When the types | |
4004 | are all the same size they wind up as unsigned. When file_ptr is a | |
4005 | larger signed type, the arithmetic winds up as signed long long, | |
4006 | which is wrong. | |
4007 | ||
4008 | What we're trying to say here is something like ``increase OFF by | |
4009 | the least amount that will cause it to be equal to the VMA modulo | |
4010 | the page size.'' */ | |
4011 | /* In other words, something like: | |
4012 | ||
4013 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4014 | off_offset = off % bed->maxpagesize; | |
4015 | if (vma_offset < off_offset) | |
4016 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4017 | else | |
4018 | adjustment = vma_offset - off_offset; | |
4019 | ||
4020 | which can can be collapsed into the expression below. */ | |
4021 | ||
4022 | static file_ptr | |
4023 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4024 | { | |
4025 | return ((vma - off) % maxpagesize); | |
4026 | } | |
4027 | ||
252b5132 RH |
4028 | /* Assign file positions to the sections based on the mapping from |
4029 | sections to segments. This function also sets up some fields in | |
4030 | the file header, and writes out the program headers. */ | |
4031 | ||
b34976b6 | 4032 | static bfd_boolean |
c84fca4d | 4033 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
4034 | { |
4035 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4036 | unsigned int count; | |
4037 | struct elf_segment_map *m; | |
4038 | unsigned int alloc; | |
4039 | Elf_Internal_Phdr *phdrs; | |
4040 | file_ptr off, voff; | |
4041 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4042 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4043 | Elf_Internal_Phdr *p; | |
dc810e39 | 4044 | bfd_size_type amt; |
252b5132 RH |
4045 | |
4046 | if (elf_tdata (abfd)->segment_map == NULL) | |
4047 | { | |
4048 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 4049 | return FALSE; |
252b5132 | 4050 | } |
1ed89aa9 NC |
4051 | else |
4052 | { | |
4053 | /* The placement algorithm assumes that non allocated sections are | |
4054 | not in PT_LOAD segments. We ensure this here by removing such | |
4055 | sections from the segment map. */ | |
4056 | for (m = elf_tdata (abfd)->segment_map; | |
4057 | m != NULL; | |
4058 | m = m->next) | |
4059 | { | |
4060 | unsigned int new_count; | |
4061 | unsigned int i; | |
4062 | ||
4063 | if (m->p_type != PT_LOAD) | |
4064 | continue; | |
4065 | ||
4066 | new_count = 0; | |
4067 | for (i = 0; i < m->count; i ++) | |
4068 | { | |
4069 | if ((m->sections[i]->flags & SEC_ALLOC) != 0) | |
4070 | { | |
47d9a591 | 4071 | if (i != new_count) |
1ed89aa9 NC |
4072 | m->sections[new_count] = m->sections[i]; |
4073 | ||
4074 | new_count ++; | |
4075 | } | |
4076 | } | |
4077 | ||
4078 | if (new_count != m->count) | |
4079 | m->count = new_count; | |
4080 | } | |
4081 | } | |
252b5132 RH |
4082 | |
4083 | if (bed->elf_backend_modify_segment_map) | |
4084 | { | |
c84fca4d | 4085 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 4086 | return FALSE; |
252b5132 RH |
4087 | } |
4088 | ||
4089 | count = 0; | |
4090 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4091 | ++count; | |
4092 | ||
4093 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4094 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
4095 | elf_elfheader (abfd)->e_phnum = count; | |
4096 | ||
4097 | if (count == 0) | |
0ebdbb83 BW |
4098 | { |
4099 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
4100 | return TRUE; | |
4101 | } | |
252b5132 RH |
4102 | |
4103 | /* If we already counted the number of program segments, make sure | |
4104 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
4105 | is used in a linker script. */ | |
4106 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
4107 | if (alloc != 0 && count > alloc) | |
4108 | { | |
4109 | ((*_bfd_error_handler) | |
b301b248 AM |
4110 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
4111 | abfd, alloc, count)); | |
252b5132 | 4112 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4113 | return FALSE; |
252b5132 RH |
4114 | } |
4115 | ||
4116 | if (alloc == 0) | |
4117 | alloc = count; | |
4118 | ||
dc810e39 | 4119 | amt = alloc * sizeof (Elf_Internal_Phdr); |
217aa764 | 4120 | phdrs = bfd_alloc (abfd, amt); |
252b5132 | 4121 | if (phdrs == NULL) |
b34976b6 | 4122 | return FALSE; |
252b5132 RH |
4123 | |
4124 | off = bed->s->sizeof_ehdr; | |
4125 | off += alloc * bed->s->sizeof_phdr; | |
4126 | ||
4127 | filehdr_vaddr = 0; | |
4128 | filehdr_paddr = 0; | |
4129 | phdrs_vaddr = 0; | |
4130 | phdrs_paddr = 0; | |
4131 | ||
4132 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4133 | m != NULL; | |
4134 | m = m->next, p++) | |
4135 | { | |
4136 | unsigned int i; | |
4137 | asection **secpp; | |
4138 | ||
4139 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4140 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4141 | not be done to the PT_NOTE section of a corefile, which may |
4142 | contain several pseudo-sections artificially created by bfd. | |
4143 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4144 | if (m->count > 1 |
4145 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4146 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4147 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4148 | elf_sort_sections); | |
4149 | ||
b301b248 AM |
4150 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4151 | number of sections with contents contributing to both p_filesz | |
4152 | and p_memsz, followed by a number of sections with no contents | |
4153 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4154 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4155 | an adjustment we use for segments that have no file contents | |
4156 | but need zero filled memory allocation. */ | |
4157 | voff = 0; | |
252b5132 | 4158 | p->p_type = m->p_type; |
28a7f3e7 | 4159 | p->p_flags = m->p_flags; |
252b5132 RH |
4160 | |
4161 | if (p->p_type == PT_LOAD | |
b301b248 | 4162 | && m->count > 0) |
252b5132 | 4163 | { |
b301b248 AM |
4164 | bfd_size_type align; |
4165 | bfd_vma adjust; | |
4166 | ||
252b5132 | 4167 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 | 4168 | align = bed->maxpagesize; |
252b5132 RH |
4169 | else |
4170 | { | |
b301b248 | 4171 | unsigned int align_power = 0; |
252b5132 RH |
4172 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4173 | { | |
b301b248 | 4174 | unsigned int secalign; |
252b5132 RH |
4175 | |
4176 | secalign = bfd_get_section_alignment (abfd, *secpp); | |
b301b248 AM |
4177 | if (secalign > align_power) |
4178 | align_power = secalign; | |
252b5132 | 4179 | } |
b301b248 AM |
4180 | align = (bfd_size_type) 1 << align_power; |
4181 | } | |
252b5132 | 4182 | |
b301b248 AM |
4183 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4184 | off += adjust; | |
4185 | if (adjust != 0 | |
4186 | && !m->includes_filehdr | |
4187 | && !m->includes_phdrs | |
4188 | && (ufile_ptr) off >= align) | |
4189 | { | |
4190 | /* If the first section isn't loadable, the same holds for | |
4191 | any other sections. Since the segment won't need file | |
4192 | space, we can make p_offset overlap some prior segment. | |
4193 | However, .tbss is special. If a segment starts with | |
4194 | .tbss, we need to look at the next section to decide | |
4195 | whether the segment has any loadable sections. */ | |
4196 | i = 0; | |
5efb6261 | 4197 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4198 | { |
4199 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4200 | || ++i >= m->count) | |
4201 | { | |
4202 | off -= adjust; | |
4203 | voff = adjust - align; | |
4204 | break; | |
4205 | } | |
4206 | } | |
252b5132 RH |
4207 | } |
4208 | } | |
b1a6d0b1 NC |
4209 | /* Make sure the .dynamic section is the first section in the |
4210 | PT_DYNAMIC segment. */ | |
4211 | else if (p->p_type == PT_DYNAMIC | |
4212 | && m->count > 1 | |
4213 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4214 | { | |
4215 | _bfd_error_handler | |
b301b248 AM |
4216 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4217 | abfd); | |
b1a6d0b1 NC |
4218 | bfd_set_error (bfd_error_bad_value); |
4219 | return FALSE; | |
4220 | } | |
252b5132 RH |
4221 | |
4222 | if (m->count == 0) | |
4223 | p->p_vaddr = 0; | |
4224 | else | |
4225 | p->p_vaddr = m->sections[0]->vma; | |
4226 | ||
4227 | if (m->p_paddr_valid) | |
4228 | p->p_paddr = m->p_paddr; | |
4229 | else if (m->count == 0) | |
4230 | p->p_paddr = 0; | |
4231 | else | |
4232 | p->p_paddr = m->sections[0]->lma; | |
4233 | ||
4234 | if (p->p_type == PT_LOAD | |
4235 | && (abfd->flags & D_PAGED) != 0) | |
4236 | p->p_align = bed->maxpagesize; | |
4237 | else if (m->count == 0) | |
45d6a902 | 4238 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4239 | else |
4240 | p->p_align = 0; | |
4241 | ||
4242 | p->p_offset = 0; | |
4243 | p->p_filesz = 0; | |
4244 | p->p_memsz = 0; | |
4245 | ||
4246 | if (m->includes_filehdr) | |
4247 | { | |
4248 | if (! m->p_flags_valid) | |
4249 | p->p_flags |= PF_R; | |
4250 | p->p_offset = 0; | |
4251 | p->p_filesz = bed->s->sizeof_ehdr; | |
4252 | p->p_memsz = bed->s->sizeof_ehdr; | |
4253 | if (m->count > 0) | |
4254 | { | |
4255 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4256 | ||
4257 | if (p->p_vaddr < (bfd_vma) off) | |
4258 | { | |
caf47ea6 | 4259 | (*_bfd_error_handler) |
b301b248 AM |
4260 | (_("%B: Not enough room for program headers, try linking with -N"), |
4261 | abfd); | |
252b5132 | 4262 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4263 | return FALSE; |
252b5132 RH |
4264 | } |
4265 | ||
4266 | p->p_vaddr -= off; | |
4267 | if (! m->p_paddr_valid) | |
4268 | p->p_paddr -= off; | |
4269 | } | |
4270 | if (p->p_type == PT_LOAD) | |
4271 | { | |
4272 | filehdr_vaddr = p->p_vaddr; | |
4273 | filehdr_paddr = p->p_paddr; | |
4274 | } | |
4275 | } | |
4276 | ||
4277 | if (m->includes_phdrs) | |
4278 | { | |
4279 | if (! m->p_flags_valid) | |
4280 | p->p_flags |= PF_R; | |
4281 | ||
4282 | if (m->includes_filehdr) | |
4283 | { | |
4284 | if (p->p_type == PT_LOAD) | |
4285 | { | |
4286 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4287 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4288 | } | |
4289 | } | |
4290 | else | |
4291 | { | |
4292 | p->p_offset = bed->s->sizeof_ehdr; | |
4293 | ||
4294 | if (m->count > 0) | |
4295 | { | |
4296 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4297 | p->p_vaddr -= off - p->p_offset; | |
4298 | if (! m->p_paddr_valid) | |
4299 | p->p_paddr -= off - p->p_offset; | |
4300 | } | |
4301 | ||
4302 | if (p->p_type == PT_LOAD) | |
4303 | { | |
4304 | phdrs_vaddr = p->p_vaddr; | |
4305 | phdrs_paddr = p->p_paddr; | |
4306 | } | |
4307 | else | |
4308 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4309 | } | |
4310 | ||
4311 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4312 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4313 | } | |
4314 | ||
4315 | if (p->p_type == PT_LOAD | |
4316 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4317 | { | |
4318 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4319 | p->p_offset = off + voff; |
252b5132 RH |
4320 | else |
4321 | { | |
4322 | file_ptr adjust; | |
4323 | ||
4324 | adjust = off - (p->p_offset + p->p_filesz); | |
4325 | p->p_filesz += adjust; | |
4326 | p->p_memsz += adjust; | |
4327 | } | |
4328 | } | |
4329 | ||
252b5132 RH |
4330 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4331 | { | |
4332 | asection *sec; | |
4333 | flagword flags; | |
4334 | bfd_size_type align; | |
4335 | ||
4336 | sec = *secpp; | |
4337 | flags = sec->flags; | |
4338 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4339 | ||
b301b248 AM |
4340 | if (p->p_type == PT_LOAD |
4341 | || p->p_type == PT_TLS) | |
252b5132 RH |
4342 | { |
4343 | bfd_signed_vma adjust; | |
4344 | ||
5efb6261 | 4345 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4346 | { |
b301b248 | 4347 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4348 | if (adjust < 0) |
b301b248 AM |
4349 | { |
4350 | (*_bfd_error_handler) | |
4351 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4352 | abfd, sec, (unsigned long) sec->lma); | |
4353 | adjust = 0; | |
4354 | } | |
4355 | off += adjust; | |
4356 | p->p_filesz += adjust; | |
4357 | p->p_memsz += adjust; | |
252b5132 | 4358 | } |
b301b248 AM |
4359 | /* .tbss is special. It doesn't contribute to p_memsz of |
4360 | normal segments. */ | |
4361 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4362 | || p->p_type == PT_TLS) | |
252b5132 RH |
4363 | { |
4364 | /* The section VMA must equal the file position | |
b301b248 AM |
4365 | modulo the page size. */ |
4366 | bfd_size_type page = align; | |
252b5132 | 4367 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 AM |
4368 | page = bed->maxpagesize; |
4369 | adjust = vma_page_aligned_bias (sec->vma, | |
4370 | p->p_vaddr + p->p_memsz, | |
4371 | page); | |
252b5132 | 4372 | p->p_memsz += adjust; |
252b5132 | 4373 | } |
252b5132 RH |
4374 | } |
4375 | ||
4376 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4377 | { | |
b301b248 AM |
4378 | /* The section at i == 0 is the one that actually contains |
4379 | everything. */ | |
4a938328 MS |
4380 | if (i == 0) |
4381 | { | |
252b5132 | 4382 | sec->filepos = off; |
eea6121a | 4383 | off += sec->size; |
b301b248 AM |
4384 | p->p_filesz = sec->size; |
4385 | p->p_memsz = 0; | |
4386 | p->p_align = 1; | |
252b5132 | 4387 | } |
4a938328 | 4388 | else |
252b5132 | 4389 | { |
b301b248 | 4390 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4391 | sec->filepos = 0; |
eea6121a | 4392 | sec->size = 0; |
b301b248 AM |
4393 | sec->flags = 0; |
4394 | continue; | |
252b5132 | 4395 | } |
252b5132 RH |
4396 | } |
4397 | else | |
4398 | { | |
b301b248 AM |
4399 | if (p->p_type == PT_LOAD) |
4400 | { | |
4401 | sec->filepos = off; | |
5efb6261 AM |
4402 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4403 | 1997, and the exact reason for it isn't clear. One | |
4404 | plausible explanation is that it is to work around | |
4405 | a problem we have with linker scripts using data | |
4406 | statements in NOLOAD sections. I don't think it | |
4407 | makes a great deal of sense to have such a section | |
4408 | assigned to a PT_LOAD segment, but apparently | |
4409 | people do this. The data statement results in a | |
4410 | bfd_data_link_order being built, and these need | |
4411 | section contents to write into. Eventually, we get | |
4412 | to _bfd_elf_write_object_contents which writes any | |
4413 | section with contents to the output. Make room | |
4414 | here for the write, so that following segments are | |
4415 | not trashed. */ | |
4416 | if ((flags & SEC_LOAD) != 0 | |
4417 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4418 | off += sec->size; |
4419 | } | |
252b5132 | 4420 | |
5efb6261 | 4421 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4422 | { |
4423 | p->p_filesz += sec->size; | |
4424 | p->p_memsz += sec->size; | |
4425 | } | |
4b6c0f2f NC |
4426 | /* PR ld/594: Sections in note segments which are not loaded |
4427 | contribute to the file size but not the in-memory size. */ | |
4428 | else if (p->p_type == PT_NOTE | |
4429 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4430 | p->p_filesz += sec->size; | |
4431 | ||
b301b248 AM |
4432 | /* .tbss is special. It doesn't contribute to p_memsz of |
4433 | normal segments. */ | |
4434 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4435 | || p->p_type == PT_TLS) | |
4436 | p->p_memsz += sec->size; | |
252b5132 | 4437 | |
13ae64f3 | 4438 | if (p->p_type == PT_TLS |
eea6121a | 4439 | && sec->size == 0 |
13ae64f3 JJ |
4440 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4441 | { | |
4442 | struct bfd_link_order *o; | |
4443 | bfd_vma tbss_size = 0; | |
4444 | ||
8423293d | 4445 | for (o = sec->map_head.link_order; o != NULL; o = o->next) |
13ae64f3 JJ |
4446 | if (tbss_size < o->offset + o->size) |
4447 | tbss_size = o->offset + o->size; | |
4448 | ||
4449 | p->p_memsz += tbss_size; | |
4450 | } | |
4451 | ||
252b5132 RH |
4452 | if (align > p->p_align |
4453 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4454 | p->p_align = align; | |
4455 | } | |
4456 | ||
4457 | if (! m->p_flags_valid) | |
4458 | { | |
4459 | p->p_flags |= PF_R; | |
4460 | if ((flags & SEC_CODE) != 0) | |
4461 | p->p_flags |= PF_X; | |
4462 | if ((flags & SEC_READONLY) == 0) | |
4463 | p->p_flags |= PF_W; | |
4464 | } | |
4465 | } | |
4466 | } | |
4467 | ||
4468 | /* Now that we have set the section file positions, we can set up | |
4469 | the file positions for the non PT_LOAD segments. */ | |
4470 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4471 | m != NULL; | |
4472 | m = m->next, p++) | |
4473 | { | |
4474 | if (p->p_type != PT_LOAD && m->count > 0) | |
4475 | { | |
4476 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4477 | /* If the section has not yet been assigned a file position, |
4478 | do so now. The ARM BPABI requires that .dynamic section | |
4479 | not be marked SEC_ALLOC because it is not part of any | |
4480 | PT_LOAD segment, so it will not be processed above. */ | |
4481 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4482 | { | |
4483 | unsigned int i; | |
4484 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4485 | ||
4486 | i = 1; | |
4487 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4488 | ++i; | |
4489 | off = (_bfd_elf_assign_file_position_for_section | |
4490 | (i_shdrpp[i], off, TRUE)); | |
4491 | p->p_filesz = m->sections[0]->size; | |
4492 | } | |
252b5132 RH |
4493 | p->p_offset = m->sections[0]->filepos; |
4494 | } | |
4495 | if (m->count == 0) | |
4496 | { | |
4497 | if (m->includes_filehdr) | |
4498 | { | |
4499 | p->p_vaddr = filehdr_vaddr; | |
4500 | if (! m->p_paddr_valid) | |
4501 | p->p_paddr = filehdr_paddr; | |
4502 | } | |
4503 | else if (m->includes_phdrs) | |
4504 | { | |
4505 | p->p_vaddr = phdrs_vaddr; | |
4506 | if (! m->p_paddr_valid) | |
4507 | p->p_paddr = phdrs_paddr; | |
4508 | } | |
8c37241b JJ |
4509 | else if (p->p_type == PT_GNU_RELRO) |
4510 | { | |
4511 | Elf_Internal_Phdr *lp; | |
4512 | ||
4513 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4514 | { | |
4515 | if (lp->p_type == PT_LOAD | |
4516 | && lp->p_vaddr <= link_info->relro_end | |
4517 | && lp->p_vaddr >= link_info->relro_start | |
4518 | && lp->p_vaddr + lp->p_filesz | |
4519 | >= link_info->relro_end) | |
4520 | break; | |
4521 | } | |
4522 | ||
4523 | if (lp < phdrs + count | |
4524 | && link_info->relro_end > lp->p_vaddr) | |
4525 | { | |
4526 | p->p_vaddr = lp->p_vaddr; | |
4527 | p->p_paddr = lp->p_paddr; | |
4528 | p->p_offset = lp->p_offset; | |
4529 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4530 | p->p_memsz = p->p_filesz; | |
4531 | p->p_align = 1; | |
4532 | p->p_flags = (lp->p_flags & ~PF_W); | |
4533 | } | |
4534 | else | |
4535 | { | |
4536 | memset (p, 0, sizeof *p); | |
4537 | p->p_type = PT_NULL; | |
4538 | } | |
4539 | } | |
252b5132 RH |
4540 | } |
4541 | } | |
4542 | ||
4543 | /* Clear out any program headers we allocated but did not use. */ | |
4544 | for (; count < alloc; count++, p++) | |
4545 | { | |
4546 | memset (p, 0, sizeof *p); | |
4547 | p->p_type = PT_NULL; | |
4548 | } | |
4549 | ||
4550 | elf_tdata (abfd)->phdr = phdrs; | |
4551 | ||
4552 | elf_tdata (abfd)->next_file_pos = off; | |
4553 | ||
4554 | /* Write out the program headers. */ | |
dc810e39 | 4555 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4556 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4557 | return FALSE; |
252b5132 | 4558 | |
b34976b6 | 4559 | return TRUE; |
252b5132 RH |
4560 | } |
4561 | ||
4562 | /* Get the size of the program header. | |
4563 | ||
4564 | If this is called by the linker before any of the section VMA's are set, it | |
4565 | can't calculate the correct value for a strange memory layout. This only | |
4566 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4567 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4568 | data segment (exclusive of .interp and .dynamic). | |
4569 | ||
4570 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4571 | will be two segments. */ | |
4572 | ||
4573 | static bfd_size_type | |
217aa764 | 4574 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4575 | { |
4576 | size_t segs; | |
4577 | asection *s; | |
9c5bfbb7 | 4578 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4579 | |
4580 | /* We can't return a different result each time we're called. */ | |
4581 | if (elf_tdata (abfd)->program_header_size != 0) | |
4582 | return elf_tdata (abfd)->program_header_size; | |
4583 | ||
4584 | if (elf_tdata (abfd)->segment_map != NULL) | |
4585 | { | |
4586 | struct elf_segment_map *m; | |
4587 | ||
4588 | segs = 0; | |
4589 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4590 | ++segs; | |
4591 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4592 | return elf_tdata (abfd)->program_header_size; | |
4593 | } | |
4594 | ||
4595 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4596 | and one for data. */ | |
4597 | segs = 2; | |
4598 | ||
4599 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4600 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4601 | { | |
4602 | /* If we have a loadable interpreter section, we need a | |
4603 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4604 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4605 | targets. */ |
4606 | segs += 2; | |
4607 | } | |
4608 | ||
4609 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4610 | { | |
4611 | /* We need a PT_DYNAMIC segment. */ | |
4612 | ++segs; | |
4613 | } | |
4614 | ||
126495ed | 4615 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4616 | { |
4617 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4618 | ++segs; | |
4619 | } | |
4620 | ||
9ee5e499 JJ |
4621 | if (elf_tdata (abfd)->stack_flags) |
4622 | { | |
4623 | /* We need a PT_GNU_STACK segment. */ | |
4624 | ++segs; | |
4625 | } | |
4626 | ||
8c37241b JJ |
4627 | if (elf_tdata (abfd)->relro) |
4628 | { | |
4629 | /* We need a PT_GNU_RELRO segment. */ | |
4630 | ++segs; | |
4631 | } | |
4632 | ||
252b5132 RH |
4633 | for (s = abfd->sections; s != NULL; s = s->next) |
4634 | { | |
4635 | if ((s->flags & SEC_LOAD) != 0 | |
4636 | && strncmp (s->name, ".note", 5) == 0) | |
4637 | { | |
4638 | /* We need a PT_NOTE segment. */ | |
4639 | ++segs; | |
4640 | } | |
4641 | } | |
4642 | ||
13ae64f3 JJ |
4643 | for (s = abfd->sections; s != NULL; s = s->next) |
4644 | { | |
4645 | if (s->flags & SEC_THREAD_LOCAL) | |
4646 | { | |
4647 | /* We need a PT_TLS segment. */ | |
4648 | ++segs; | |
4649 | break; | |
4650 | } | |
4651 | } | |
4652 | ||
252b5132 RH |
4653 | /* Let the backend count up any program headers it might need. */ |
4654 | if (bed->elf_backend_additional_program_headers) | |
4655 | { | |
4656 | int a; | |
4657 | ||
4658 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4659 | if (a == -1) | |
4660 | abort (); | |
4661 | segs += a; | |
4662 | } | |
4663 | ||
4664 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4665 | return elf_tdata (abfd)->program_header_size; | |
4666 | } | |
4667 | ||
4668 | /* Work out the file positions of all the sections. This is called by | |
4669 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4670 | VMAs must be known before this is called. | |
4671 | ||
e0638f70 AM |
4672 | Reloc sections come in two flavours: Those processed specially as |
4673 | "side-channel" data attached to a section to which they apply, and | |
4674 | those that bfd doesn't process as relocations. The latter sort are | |
4675 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4676 | consider the former sort here, unless they form part of the loadable | |
4677 | image. Reloc sections not assigned here will be handled later by | |
4678 | assign_file_positions_for_relocs. | |
252b5132 RH |
4679 | |
4680 | We also don't set the positions of the .symtab and .strtab here. */ | |
4681 | ||
b34976b6 | 4682 | static bfd_boolean |
c84fca4d AO |
4683 | assign_file_positions_except_relocs (bfd *abfd, |
4684 | struct bfd_link_info *link_info) | |
252b5132 RH |
4685 | { |
4686 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4687 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4688 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4689 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4690 | file_ptr off; |
9c5bfbb7 | 4691 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4692 | |
4693 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4694 | && bfd_get_format (abfd) != bfd_core) | |
4695 | { | |
4696 | Elf_Internal_Shdr **hdrpp; | |
4697 | unsigned int i; | |
4698 | ||
4699 | /* Start after the ELF header. */ | |
4700 | off = i_ehdrp->e_ehsize; | |
4701 | ||
4702 | /* We are not creating an executable, which means that we are | |
4703 | not creating a program header, and that the actual order of | |
4704 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4705 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4706 | { |
4707 | Elf_Internal_Shdr *hdr; | |
4708 | ||
4709 | hdr = *hdrpp; | |
e0638f70 AM |
4710 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4711 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4712 | || i == tdata->symtab_section |
4713 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4714 | || i == tdata->strtab_section) |
4715 | { | |
4716 | hdr->sh_offset = -1; | |
252b5132 | 4717 | } |
9ad5cbcf | 4718 | else |
b34976b6 | 4719 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4720 | |
9ad5cbcf AM |
4721 | if (i == SHN_LORESERVE - 1) |
4722 | { | |
4723 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4724 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4725 | } | |
252b5132 RH |
4726 | } |
4727 | } | |
4728 | else | |
4729 | { | |
4730 | unsigned int i; | |
4731 | Elf_Internal_Shdr **hdrpp; | |
4732 | ||
4733 | /* Assign file positions for the loaded sections based on the | |
4734 | assignment of sections to segments. */ | |
c84fca4d | 4735 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4736 | return FALSE; |
252b5132 RH |
4737 | |
4738 | /* Assign file positions for the other sections. */ | |
4739 | ||
4740 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4741 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4742 | { |
4743 | Elf_Internal_Shdr *hdr; | |
4744 | ||
4745 | hdr = *hdrpp; | |
4746 | if (hdr->bfd_section != NULL | |
4747 | && hdr->bfd_section->filepos != 0) | |
4748 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4749 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4750 | { | |
4751 | ((*_bfd_error_handler) | |
b301b248 AM |
4752 | (_("%B: warning: allocated section `%s' not in segment"), |
4753 | abfd, | |
252b5132 RH |
4754 | (hdr->bfd_section == NULL |
4755 | ? "*unknown*" | |
4756 | : hdr->bfd_section->name))); | |
4757 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4758 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4759 | bed->maxpagesize); | |
252b5132 | 4760 | else |
340b6d91 AC |
4761 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4762 | hdr->sh_addralign); | |
252b5132 | 4763 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4764 | FALSE); |
252b5132 | 4765 | } |
e0638f70 AM |
4766 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4767 | && hdr->bfd_section == NULL) | |
252b5132 | 4768 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4769 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4770 | || hdr == i_shdrpp[tdata->strtab_section]) |
4771 | hdr->sh_offset = -1; | |
4772 | else | |
b34976b6 | 4773 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4774 | |
4775 | if (i == SHN_LORESERVE - 1) | |
4776 | { | |
4777 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4778 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4779 | } | |
252b5132 RH |
4780 | } |
4781 | } | |
4782 | ||
4783 | /* Place the section headers. */ | |
45d6a902 | 4784 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4785 | i_ehdrp->e_shoff = off; |
4786 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4787 | ||
4788 | elf_tdata (abfd)->next_file_pos = off; | |
4789 | ||
b34976b6 | 4790 | return TRUE; |
252b5132 RH |
4791 | } |
4792 | ||
b34976b6 | 4793 | static bfd_boolean |
217aa764 | 4794 | prep_headers (bfd *abfd) |
252b5132 RH |
4795 | { |
4796 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4797 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4798 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4799 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4800 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4801 | |
4802 | i_ehdrp = elf_elfheader (abfd); | |
4803 | i_shdrp = elf_elfsections (abfd); | |
4804 | ||
2b0f7ef9 | 4805 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4806 | if (shstrtab == NULL) |
b34976b6 | 4807 | return FALSE; |
252b5132 RH |
4808 | |
4809 | elf_shstrtab (abfd) = shstrtab; | |
4810 | ||
4811 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4812 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4813 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4814 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4815 | ||
4816 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4817 | i_ehdrp->e_ident[EI_DATA] = | |
4818 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4819 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4820 | ||
252b5132 RH |
4821 | if ((abfd->flags & DYNAMIC) != 0) |
4822 | i_ehdrp->e_type = ET_DYN; | |
4823 | else if ((abfd->flags & EXEC_P) != 0) | |
4824 | i_ehdrp->e_type = ET_EXEC; | |
4825 | else if (bfd_get_format (abfd) == bfd_core) | |
4826 | i_ehdrp->e_type = ET_CORE; | |
4827 | else | |
4828 | i_ehdrp->e_type = ET_REL; | |
4829 | ||
4830 | switch (bfd_get_arch (abfd)) | |
4831 | { | |
4832 | case bfd_arch_unknown: | |
4833 | i_ehdrp->e_machine = EM_NONE; | |
4834 | break; | |
aa4f99bb AO |
4835 | |
4836 | /* There used to be a long list of cases here, each one setting | |
4837 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4838 | in the corresponding bfd definition. To avoid duplication, | |
4839 | the switch was removed. Machines that need special handling | |
4840 | can generally do it in elf_backend_final_write_processing(), | |
4841 | unless they need the information earlier than the final write. | |
4842 | Such need can generally be supplied by replacing the tests for | |
4843 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4844 | default: |
9c5bfbb7 AM |
4845 | i_ehdrp->e_machine = bed->elf_machine_code; |
4846 | } | |
aa4f99bb | 4847 | |
252b5132 RH |
4848 | i_ehdrp->e_version = bed->s->ev_current; |
4849 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4850 | ||
c044fabd | 4851 | /* No program header, for now. */ |
252b5132 RH |
4852 | i_ehdrp->e_phoff = 0; |
4853 | i_ehdrp->e_phentsize = 0; | |
4854 | i_ehdrp->e_phnum = 0; | |
4855 | ||
c044fabd | 4856 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4857 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4858 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4859 | ||
c044fabd | 4860 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4861 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4862 | /* It all happens later. */ |
4863 | ; | |
252b5132 RH |
4864 | else |
4865 | { | |
4866 | i_ehdrp->e_phentsize = 0; | |
4867 | i_phdrp = 0; | |
4868 | i_ehdrp->e_phoff = 0; | |
4869 | } | |
4870 | ||
4871 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4872 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4873 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4874 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4875 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4876 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4877 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4878 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4879 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4880 | return FALSE; |
252b5132 | 4881 | |
b34976b6 | 4882 | return TRUE; |
252b5132 RH |
4883 | } |
4884 | ||
4885 | /* Assign file positions for all the reloc sections which are not part | |
4886 | of the loadable file image. */ | |
4887 | ||
4888 | void | |
217aa764 | 4889 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4890 | { |
4891 | file_ptr off; | |
9ad5cbcf | 4892 | unsigned int i, num_sec; |
252b5132 RH |
4893 | Elf_Internal_Shdr **shdrpp; |
4894 | ||
4895 | off = elf_tdata (abfd)->next_file_pos; | |
4896 | ||
9ad5cbcf AM |
4897 | num_sec = elf_numsections (abfd); |
4898 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4899 | { |
4900 | Elf_Internal_Shdr *shdrp; | |
4901 | ||
4902 | shdrp = *shdrpp; | |
4903 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4904 | && shdrp->sh_offset == -1) | |
b34976b6 | 4905 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4906 | } |
4907 | ||
4908 | elf_tdata (abfd)->next_file_pos = off; | |
4909 | } | |
4910 | ||
b34976b6 | 4911 | bfd_boolean |
217aa764 | 4912 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4913 | { |
9c5bfbb7 | 4914 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4915 | Elf_Internal_Ehdr *i_ehdrp; |
4916 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4917 | bfd_boolean failed; |
9ad5cbcf | 4918 | unsigned int count, num_sec; |
252b5132 RH |
4919 | |
4920 | if (! abfd->output_has_begun | |
217aa764 | 4921 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4922 | return FALSE; |
252b5132 RH |
4923 | |
4924 | i_shdrp = elf_elfsections (abfd); | |
4925 | i_ehdrp = elf_elfheader (abfd); | |
4926 | ||
b34976b6 | 4927 | failed = FALSE; |
252b5132 RH |
4928 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4929 | if (failed) | |
b34976b6 | 4930 | return FALSE; |
252b5132 RH |
4931 | |
4932 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4933 | ||
c044fabd | 4934 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4935 | num_sec = elf_numsections (abfd); |
4936 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4937 | { |
4938 | if (bed->elf_backend_section_processing) | |
4939 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4940 | if (i_shdrp[count]->contents) | |
4941 | { | |
dc810e39 AM |
4942 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4943 | ||
252b5132 | 4944 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4945 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4946 | return FALSE; |
252b5132 | 4947 | } |
9ad5cbcf AM |
4948 | if (count == SHN_LORESERVE - 1) |
4949 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4950 | } |
4951 | ||
4952 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4953 | if (elf_shstrtab (abfd) != NULL |
4954 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
4955 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) | |
b34976b6 | 4956 | return FALSE; |
252b5132 RH |
4957 | |
4958 | if (bed->elf_backend_final_write_processing) | |
4959 | (*bed->elf_backend_final_write_processing) (abfd, | |
4960 | elf_tdata (abfd)->linker); | |
4961 | ||
4962 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4963 | } | |
4964 | ||
b34976b6 | 4965 | bfd_boolean |
217aa764 | 4966 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4967 | { |
c044fabd | 4968 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4969 | return _bfd_elf_write_object_contents (abfd); |
4970 | } | |
c044fabd KH |
4971 | |
4972 | /* Given a section, search the header to find them. */ | |
4973 | ||
252b5132 | 4974 | int |
198beae2 | 4975 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4976 | { |
9c5bfbb7 | 4977 | const struct elf_backend_data *bed; |
252b5132 | 4978 | int index; |
252b5132 | 4979 | |
9ad5cbcf AM |
4980 | if (elf_section_data (asect) != NULL |
4981 | && elf_section_data (asect)->this_idx != 0) | |
4982 | return elf_section_data (asect)->this_idx; | |
4983 | ||
4984 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4985 | index = SHN_ABS; |
4986 | else if (bfd_is_com_section (asect)) | |
4987 | index = SHN_COMMON; | |
4988 | else if (bfd_is_und_section (asect)) | |
4989 | index = SHN_UNDEF; | |
4990 | else | |
6dc132d9 | 4991 | index = -1; |
252b5132 | 4992 | |
af746e92 | 4993 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4994 | if (bed->elf_backend_section_from_bfd_section) |
4995 | { | |
af746e92 | 4996 | int retval = index; |
9ad5cbcf | 4997 | |
af746e92 AM |
4998 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4999 | return retval; | |
252b5132 RH |
5000 | } |
5001 | ||
af746e92 AM |
5002 | if (index == -1) |
5003 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 5004 | |
af746e92 | 5005 | return index; |
252b5132 RH |
5006 | } |
5007 | ||
5008 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
5009 | on error. */ | |
5010 | ||
5011 | int | |
217aa764 | 5012 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
5013 | { |
5014 | asymbol *asym_ptr = *asym_ptr_ptr; | |
5015 | int idx; | |
5016 | flagword flags = asym_ptr->flags; | |
5017 | ||
5018 | /* When gas creates relocations against local labels, it creates its | |
5019 | own symbol for the section, but does put the symbol into the | |
5020 | symbol chain, so udata is 0. When the linker is generating | |
5021 | relocatable output, this section symbol may be for one of the | |
5022 | input sections rather than the output section. */ | |
5023 | if (asym_ptr->udata.i == 0 | |
5024 | && (flags & BSF_SECTION_SYM) | |
5025 | && asym_ptr->section) | |
5026 | { | |
5027 | int indx; | |
5028 | ||
5029 | if (asym_ptr->section->output_section != NULL) | |
5030 | indx = asym_ptr->section->output_section->index; | |
5031 | else | |
5032 | indx = asym_ptr->section->index; | |
4e89ac30 L |
5033 | if (indx < elf_num_section_syms (abfd) |
5034 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
5035 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5036 | } | |
5037 | ||
5038 | idx = asym_ptr->udata.i; | |
5039 | ||
5040 | if (idx == 0) | |
5041 | { | |
5042 | /* This case can occur when using --strip-symbol on a symbol | |
5043 | which is used in a relocation entry. */ | |
5044 | (*_bfd_error_handler) | |
d003868e AM |
5045 | (_("%B: symbol `%s' required but not present"), |
5046 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5047 | bfd_set_error (bfd_error_no_symbols); |
5048 | return -1; | |
5049 | } | |
5050 | ||
5051 | #if DEBUG & 4 | |
5052 | { | |
5053 | fprintf (stderr, | |
661a3fd4 | 5054 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5055 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5056 | elf_symbol_flags (flags)); | |
5057 | fflush (stderr); | |
5058 | } | |
5059 | #endif | |
5060 | ||
5061 | return idx; | |
5062 | } | |
5063 | ||
5064 | /* Copy private BFD data. This copies any program header information. */ | |
5065 | ||
b34976b6 | 5066 | static bfd_boolean |
217aa764 | 5067 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 5068 | { |
b34976b6 AM |
5069 | Elf_Internal_Ehdr *iehdr; |
5070 | struct elf_segment_map *map; | |
5071 | struct elf_segment_map *map_first; | |
5072 | struct elf_segment_map **pointer_to_map; | |
5073 | Elf_Internal_Phdr *segment; | |
5074 | asection *section; | |
5075 | unsigned int i; | |
5076 | unsigned int num_segments; | |
5077 | bfd_boolean phdr_included = FALSE; | |
5078 | bfd_vma maxpagesize; | |
5079 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5080 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5081 | const struct elf_backend_data *bed; |
bc67d8a6 | 5082 | |
c044fabd | 5083 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 5084 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 5085 | return TRUE; |
252b5132 RH |
5086 | |
5087 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 5088 | return TRUE; |
252b5132 | 5089 | |
caf47ea6 | 5090 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5091 | iehdr = elf_elfheader (ibfd); |
5092 | ||
bc67d8a6 | 5093 | map_first = NULL; |
c044fabd | 5094 | pointer_to_map = &map_first; |
252b5132 RH |
5095 | |
5096 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5097 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5098 | ||
5099 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5100 | #define SEGMENT_END(segment, start) \ |
5101 | (start + (segment->p_memsz > segment->p_filesz \ | |
5102 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5103 | |
eecdbe52 JJ |
5104 | #define SECTION_SIZE(section, segment) \ |
5105 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5106 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5107 | ? section->size : 0) |
eecdbe52 | 5108 | |
b34976b6 | 5109 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5110 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5111 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5112 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5113 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5114 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5115 | |
b34976b6 | 5116 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5117 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5118 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5119 | (section->lma >= base \ | |
eecdbe52 | 5120 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5121 | <= SEGMENT_END (segment, base))) |
252b5132 | 5122 | |
c044fabd | 5123 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5124 | #define IS_COREFILE_NOTE(p, s) \ |
5125 | (p->p_type == PT_NOTE \ | |
5126 | && bfd_get_format (ibfd) == bfd_core \ | |
5127 | && s->vma == 0 && s->lma == 0 \ | |
5128 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5129 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5130 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5131 | |
5132 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5133 | linker, which generates a PT_INTERP section with p_vaddr and | |
5134 | p_memsz set to 0. */ | |
aecc8f8a AM |
5135 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5136 | (p->p_vaddr == 0 \ | |
5137 | && p->p_paddr == 0 \ | |
5138 | && p->p_memsz == 0 \ | |
5139 | && p->p_filesz > 0 \ | |
5140 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5141 | && s->size > 0 \ |
aecc8f8a | 5142 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5143 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5144 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5145 | |
bc67d8a6 NC |
5146 | /* Decide if the given section should be included in the given segment. |
5147 | A section will be included if: | |
f5ffc919 NC |
5148 | 1. It is within the address space of the segment -- we use the LMA |
5149 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5150 | 2. It is an allocated segment, |
5151 | 3. There is an output section associated with it, | |
eecdbe52 | 5152 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5153 | 5. PT_GNU_STACK segments do not include any sections. |
5154 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5155 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5156 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5157 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5158 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5159 | ((((segment->p_paddr \ |
5160 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5161 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5162 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5163 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5164 | && section->output_section != NULL \ |
03394ac9 | 5165 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5166 | && (segment->p_type != PT_TLS \ |
5167 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5168 | && (segment->p_type == PT_LOAD \ | |
5169 | || segment->p_type == PT_TLS \ | |
5170 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5171 | && (segment->p_type != PT_DYNAMIC \ |
5172 | || SECTION_SIZE (section, segment) > 0 \ | |
5173 | || (segment->p_paddr \ | |
5174 | ? segment->p_paddr != section->lma \ | |
5175 | : segment->p_vaddr != section->vma) \ | |
5176 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5177 | == 0)) \ | |
82e51918 | 5178 | && ! section->segment_mark) |
bc67d8a6 | 5179 | |
b34976b6 | 5180 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5181 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5182 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5183 | ||
5184 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5185 | their VMA address ranges and their LMA address ranges overlap. | |
5186 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5187 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5188 | to the same VMA range, but with the .data section mapped to a different | |
5189 | LMA. */ | |
aecc8f8a | 5190 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5191 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5192 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5193 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5194 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5195 | |
5196 | /* Initialise the segment mark field. */ | |
5197 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5198 | section->segment_mark = FALSE; |
bc67d8a6 | 5199 | |
252b5132 | 5200 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5201 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5202 | in the loadable segments. These can be created by weird |
aecc8f8a | 5203 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5204 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5205 | i < num_segments; | |
c044fabd | 5206 | i++, segment++) |
252b5132 | 5207 | { |
252b5132 | 5208 | unsigned int j; |
c044fabd | 5209 | Elf_Internal_Phdr *segment2; |
252b5132 | 5210 | |
aecc8f8a AM |
5211 | if (segment->p_type == PT_INTERP) |
5212 | for (section = ibfd->sections; section; section = section->next) | |
5213 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5214 | { | |
5215 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5216 | assignment code will work. */ |
aecc8f8a AM |
5217 | segment->p_vaddr = section->vma; |
5218 | break; | |
5219 | } | |
5220 | ||
bc67d8a6 NC |
5221 | if (segment->p_type != PT_LOAD) |
5222 | continue; | |
c044fabd | 5223 | |
bc67d8a6 | 5224 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5225 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5226 | { |
5227 | bfd_signed_vma extra_length; | |
c044fabd | 5228 | |
bc67d8a6 NC |
5229 | if (segment2->p_type != PT_LOAD |
5230 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5231 | continue; | |
c044fabd | 5232 | |
bc67d8a6 NC |
5233 | /* Merge the two segments together. */ |
5234 | if (segment2->p_vaddr < segment->p_vaddr) | |
5235 | { | |
c044fabd KH |
5236 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5237 | SEGMENT. */ | |
bc67d8a6 NC |
5238 | extra_length = |
5239 | SEGMENT_END (segment, segment->p_vaddr) | |
5240 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5241 | |
bc67d8a6 NC |
5242 | if (extra_length > 0) |
5243 | { | |
5244 | segment2->p_memsz += extra_length; | |
5245 | segment2->p_filesz += extra_length; | |
5246 | } | |
c044fabd | 5247 | |
bc67d8a6 | 5248 | segment->p_type = PT_NULL; |
c044fabd | 5249 | |
bc67d8a6 NC |
5250 | /* Since we have deleted P we must restart the outer loop. */ |
5251 | i = 0; | |
5252 | segment = elf_tdata (ibfd)->phdr; | |
5253 | break; | |
5254 | } | |
5255 | else | |
5256 | { | |
c044fabd KH |
5257 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5258 | SEGMENT2. */ | |
bc67d8a6 NC |
5259 | extra_length = |
5260 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5261 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5262 | |
bc67d8a6 NC |
5263 | if (extra_length > 0) |
5264 | { | |
5265 | segment->p_memsz += extra_length; | |
5266 | segment->p_filesz += extra_length; | |
5267 | } | |
c044fabd | 5268 | |
bc67d8a6 NC |
5269 | segment2->p_type = PT_NULL; |
5270 | } | |
5271 | } | |
5272 | } | |
c044fabd | 5273 | |
bc67d8a6 NC |
5274 | /* The second scan attempts to assign sections to segments. */ |
5275 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5276 | i < num_segments; | |
5277 | i ++, segment ++) | |
5278 | { | |
5279 | unsigned int section_count; | |
5280 | asection ** sections; | |
5281 | asection * output_section; | |
5282 | unsigned int isec; | |
5283 | bfd_vma matching_lma; | |
5284 | bfd_vma suggested_lma; | |
5285 | unsigned int j; | |
dc810e39 | 5286 | bfd_size_type amt; |
bc67d8a6 NC |
5287 | |
5288 | if (segment->p_type == PT_NULL) | |
5289 | continue; | |
c044fabd | 5290 | |
bc67d8a6 | 5291 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5292 | for (section = ibfd->sections, section_count = 0; |
5293 | section != NULL; | |
5294 | section = section->next) | |
caf47ea6 | 5295 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5296 | ++section_count; |
811072d8 | 5297 | |
b5f852ea NC |
5298 | /* Allocate a segment map big enough to contain |
5299 | all of the sections we have selected. */ | |
dc810e39 AM |
5300 | amt = sizeof (struct elf_segment_map); |
5301 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5302 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5303 | if (map == NULL) |
b34976b6 | 5304 | return FALSE; |
252b5132 RH |
5305 | |
5306 | /* Initialise the fields of the segment map. Default to | |
5307 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5308 | map->next = NULL; |
5309 | map->p_type = segment->p_type; | |
5310 | map->p_flags = segment->p_flags; | |
5311 | map->p_flags_valid = 1; | |
5312 | map->p_paddr = segment->p_paddr; | |
5313 | map->p_paddr_valid = 1; | |
252b5132 RH |
5314 | |
5315 | /* Determine if this segment contains the ELF file header | |
5316 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5317 | map->includes_filehdr = (segment->p_offset == 0 |
5318 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5319 | |
bc67d8a6 | 5320 | map->includes_phdrs = 0; |
252b5132 | 5321 | |
bc67d8a6 | 5322 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5323 | { |
bc67d8a6 NC |
5324 | map->includes_phdrs = |
5325 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5326 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5327 | >= ((bfd_vma) iehdr->e_phoff |
5328 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5329 | |
bc67d8a6 | 5330 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5331 | phdr_included = TRUE; |
252b5132 RH |
5332 | } |
5333 | ||
bc67d8a6 | 5334 | if (section_count == 0) |
252b5132 RH |
5335 | { |
5336 | /* Special segments, such as the PT_PHDR segment, may contain | |
5337 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5338 | something. They are allowed by the ELF spec however, so only |
5339 | a warning is produced. */ | |
bc67d8a6 | 5340 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5341 | (*_bfd_error_handler) |
d003868e AM |
5342 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5343 | ibfd); | |
252b5132 | 5344 | |
bc67d8a6 | 5345 | map->count = 0; |
c044fabd KH |
5346 | *pointer_to_map = map; |
5347 | pointer_to_map = &map->next; | |
252b5132 RH |
5348 | |
5349 | continue; | |
5350 | } | |
5351 | ||
5352 | /* Now scan the sections in the input BFD again and attempt | |
5353 | to add their corresponding output sections to the segment map. | |
5354 | The problem here is how to handle an output section which has | |
5355 | been moved (ie had its LMA changed). There are four possibilities: | |
5356 | ||
5357 | 1. None of the sections have been moved. | |
5358 | In this case we can continue to use the segment LMA from the | |
5359 | input BFD. | |
5360 | ||
5361 | 2. All of the sections have been moved by the same amount. | |
5362 | In this case we can change the segment's LMA to match the LMA | |
5363 | of the first section. | |
5364 | ||
5365 | 3. Some of the sections have been moved, others have not. | |
5366 | In this case those sections which have not been moved can be | |
5367 | placed in the current segment which will have to have its size, | |
5368 | and possibly its LMA changed, and a new segment or segments will | |
5369 | have to be created to contain the other sections. | |
5370 | ||
b5f852ea | 5371 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5372 | In this case we can change the segment's LMA to match the LMA |
5373 | of the first section and we will have to create a new segment | |
5374 | or segments to contain the other sections. | |
5375 | ||
5376 | In order to save time, we allocate an array to hold the section | |
5377 | pointers that we are interested in. As these sections get assigned | |
5378 | to a segment, they are removed from this array. */ | |
5379 | ||
0b14c2aa L |
5380 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5381 | to work around this long long bug. */ | |
5382 | amt = section_count * sizeof (asection *); | |
217aa764 | 5383 | sections = bfd_malloc (amt); |
252b5132 | 5384 | if (sections == NULL) |
b34976b6 | 5385 | return FALSE; |
252b5132 RH |
5386 | |
5387 | /* Step One: Scan for segment vs section LMA conflicts. | |
5388 | Also add the sections to the section array allocated above. | |
5389 | Also add the sections to the current segment. In the common | |
5390 | case, where the sections have not been moved, this means that | |
5391 | we have completely filled the segment, and there is nothing | |
5392 | more to do. */ | |
252b5132 | 5393 | isec = 0; |
72730e0c | 5394 | matching_lma = 0; |
252b5132 RH |
5395 | suggested_lma = 0; |
5396 | ||
bc67d8a6 NC |
5397 | for (j = 0, section = ibfd->sections; |
5398 | section != NULL; | |
5399 | section = section->next) | |
252b5132 | 5400 | { |
caf47ea6 | 5401 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5402 | { |
bc67d8a6 NC |
5403 | output_section = section->output_section; |
5404 | ||
5405 | sections[j ++] = section; | |
252b5132 RH |
5406 | |
5407 | /* The Solaris native linker always sets p_paddr to 0. | |
5408 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5409 | correct value. Note - some backends require that |
5410 | p_paddr be left as zero. */ | |
bc67d8a6 | 5411 | if (segment->p_paddr == 0 |
4455705d | 5412 | && segment->p_vaddr != 0 |
5e8d7549 | 5413 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5414 | && isec == 0 |
bc67d8a6 NC |
5415 | && output_section->lma != 0 |
5416 | && (output_section->vma == (segment->p_vaddr | |
5417 | + (map->includes_filehdr | |
5418 | ? iehdr->e_ehsize | |
5419 | : 0) | |
5420 | + (map->includes_phdrs | |
079e9a2f AM |
5421 | ? (iehdr->e_phnum |
5422 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5423 | : 0)))) |
5424 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5425 | |
5426 | /* Match up the physical address of the segment with the | |
5427 | LMA address of the output section. */ | |
bc67d8a6 | 5428 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5429 | || IS_COREFILE_NOTE (segment, section) |
5430 | || (bed->want_p_paddr_set_to_zero && | |
5431 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5432 | ) | |
252b5132 RH |
5433 | { |
5434 | if (matching_lma == 0) | |
bc67d8a6 | 5435 | matching_lma = output_section->lma; |
252b5132 RH |
5436 | |
5437 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5438 | then it does not overlap any other section within that |
252b5132 | 5439 | segment. */ |
bc67d8a6 | 5440 | map->sections[isec ++] = output_section; |
252b5132 RH |
5441 | } |
5442 | else if (suggested_lma == 0) | |
bc67d8a6 | 5443 | suggested_lma = output_section->lma; |
252b5132 RH |
5444 | } |
5445 | } | |
5446 | ||
bc67d8a6 | 5447 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5448 | |
5449 | /* Step Two: Adjust the physical address of the current segment, | |
5450 | if necessary. */ | |
bc67d8a6 | 5451 | if (isec == section_count) |
252b5132 RH |
5452 | { |
5453 | /* All of the sections fitted within the segment as currently | |
5454 | specified. This is the default case. Add the segment to | |
5455 | the list of built segments and carry on to process the next | |
5456 | program header in the input BFD. */ | |
bc67d8a6 | 5457 | map->count = section_count; |
c044fabd KH |
5458 | *pointer_to_map = map; |
5459 | pointer_to_map = &map->next; | |
252b5132 RH |
5460 | |
5461 | free (sections); | |
5462 | continue; | |
5463 | } | |
252b5132 RH |
5464 | else |
5465 | { | |
72730e0c AM |
5466 | if (matching_lma != 0) |
5467 | { | |
5468 | /* At least one section fits inside the current segment. | |
5469 | Keep it, but modify its physical address to match the | |
5470 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5471 | map->p_paddr = matching_lma; |
72730e0c AM |
5472 | } |
5473 | else | |
5474 | { | |
5475 | /* None of the sections fitted inside the current segment. | |
5476 | Change the current segment's physical address to match | |
5477 | the LMA of the first section. */ | |
bc67d8a6 | 5478 | map->p_paddr = suggested_lma; |
72730e0c AM |
5479 | } |
5480 | ||
bc67d8a6 NC |
5481 | /* Offset the segment physical address from the lma |
5482 | to allow for space taken up by elf headers. */ | |
5483 | if (map->includes_filehdr) | |
5484 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5485 | |
bc67d8a6 NC |
5486 | if (map->includes_phdrs) |
5487 | { | |
5488 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5489 | ||
5490 | /* iehdr->e_phnum is just an estimate of the number | |
5491 | of program headers that we will need. Make a note | |
5492 | here of the number we used and the segment we chose | |
5493 | to hold these headers, so that we can adjust the | |
5494 | offset when we know the correct value. */ | |
5495 | phdr_adjust_num = iehdr->e_phnum; | |
5496 | phdr_adjust_seg = map; | |
5497 | } | |
252b5132 RH |
5498 | } |
5499 | ||
5500 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5501 | those that fit to the current segment and removing them from the |
252b5132 RH |
5502 | sections array; but making sure not to leave large gaps. Once all |
5503 | possible sections have been assigned to the current segment it is | |
5504 | added to the list of built segments and if sections still remain | |
5505 | to be assigned, a new segment is constructed before repeating | |
5506 | the loop. */ | |
5507 | isec = 0; | |
5508 | do | |
5509 | { | |
bc67d8a6 | 5510 | map->count = 0; |
252b5132 RH |
5511 | suggested_lma = 0; |
5512 | ||
5513 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5514 | for (j = 0; j < section_count; j++) |
252b5132 | 5515 | { |
bc67d8a6 | 5516 | section = sections[j]; |
252b5132 | 5517 | |
bc67d8a6 | 5518 | if (section == NULL) |
252b5132 RH |
5519 | continue; |
5520 | ||
bc67d8a6 | 5521 | output_section = section->output_section; |
252b5132 | 5522 | |
bc67d8a6 | 5523 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5524 | |
bc67d8a6 NC |
5525 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5526 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5527 | { |
bc67d8a6 | 5528 | if (map->count == 0) |
252b5132 RH |
5529 | { |
5530 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5531 | the beginning of the segment, then something is |
5532 | wrong. */ | |
5533 | if (output_section->lma != | |
5534 | (map->p_paddr | |
5535 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5536 | + (map->includes_phdrs | |
5537 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5538 | : 0))) | |
252b5132 RH |
5539 | abort (); |
5540 | } | |
5541 | else | |
5542 | { | |
5543 | asection * prev_sec; | |
252b5132 | 5544 | |
bc67d8a6 | 5545 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5546 | |
5547 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5548 | and the start of this section is more than |
5549 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5550 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5551 | maxpagesize) |
caf47ea6 | 5552 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5553 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5554 | > output_section->lma)) |
252b5132 RH |
5555 | { |
5556 | if (suggested_lma == 0) | |
bc67d8a6 | 5557 | suggested_lma = output_section->lma; |
252b5132 RH |
5558 | |
5559 | continue; | |
5560 | } | |
5561 | } | |
5562 | ||
bc67d8a6 | 5563 | map->sections[map->count++] = output_section; |
252b5132 RH |
5564 | ++isec; |
5565 | sections[j] = NULL; | |
b34976b6 | 5566 | section->segment_mark = TRUE; |
252b5132 RH |
5567 | } |
5568 | else if (suggested_lma == 0) | |
bc67d8a6 | 5569 | suggested_lma = output_section->lma; |
252b5132 RH |
5570 | } |
5571 | ||
bc67d8a6 | 5572 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5573 | |
5574 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5575 | *pointer_to_map = map; |
5576 | pointer_to_map = &map->next; | |
252b5132 | 5577 | |
bc67d8a6 | 5578 | if (isec < section_count) |
252b5132 RH |
5579 | { |
5580 | /* We still have not allocated all of the sections to | |
5581 | segments. Create a new segment here, initialise it | |
5582 | and carry on looping. */ | |
dc810e39 AM |
5583 | amt = sizeof (struct elf_segment_map); |
5584 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5585 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5586 | if (map == NULL) |
5ed6aba4 NC |
5587 | { |
5588 | free (sections); | |
5589 | return FALSE; | |
5590 | } | |
252b5132 RH |
5591 | |
5592 | /* Initialise the fields of the segment map. Set the physical | |
5593 | physical address to the LMA of the first section that has | |
5594 | not yet been assigned. */ | |
bc67d8a6 NC |
5595 | map->next = NULL; |
5596 | map->p_type = segment->p_type; | |
5597 | map->p_flags = segment->p_flags; | |
5598 | map->p_flags_valid = 1; | |
5599 | map->p_paddr = suggested_lma; | |
5600 | map->p_paddr_valid = 1; | |
5601 | map->includes_filehdr = 0; | |
5602 | map->includes_phdrs = 0; | |
252b5132 RH |
5603 | } |
5604 | } | |
bc67d8a6 | 5605 | while (isec < section_count); |
252b5132 RH |
5606 | |
5607 | free (sections); | |
5608 | } | |
5609 | ||
5610 | /* The Solaris linker creates program headers in which all the | |
5611 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5612 | file, we get confused. Check for this case, and if we find it | |
5613 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5614 | for (map = map_first; map != NULL; map = map->next) |
5615 | if (map->p_paddr != 0) | |
252b5132 | 5616 | break; |
bc67d8a6 | 5617 | if (map == NULL) |
b5f852ea NC |
5618 | for (map = map_first; map != NULL; map = map->next) |
5619 | map->p_paddr_valid = 0; | |
252b5132 | 5620 | |
bc67d8a6 NC |
5621 | elf_tdata (obfd)->segment_map = map_first; |
5622 | ||
5623 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5624 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5625 | the offset if necessary. */ |
5626 | if (phdr_adjust_seg != NULL) | |
5627 | { | |
5628 | unsigned int count; | |
c044fabd | 5629 | |
bc67d8a6 | 5630 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5631 | count++; |
252b5132 | 5632 | |
bc67d8a6 NC |
5633 | if (count > phdr_adjust_num) |
5634 | phdr_adjust_seg->p_paddr | |
5635 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5636 | } | |
c044fabd | 5637 | |
bc67d8a6 | 5638 | #undef SEGMENT_END |
eecdbe52 | 5639 | #undef SECTION_SIZE |
bc67d8a6 NC |
5640 | #undef IS_CONTAINED_BY_VMA |
5641 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5642 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5643 | #undef IS_SOLARIS_PT_INTERP |
5644 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5645 | #undef SEGMENT_AFTER_SEGMENT | |
5646 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5647 | return TRUE; |
252b5132 RH |
5648 | } |
5649 | ||
5650 | /* Copy private section information. This copies over the entsize | |
5651 | field, and sometimes the info field. */ | |
5652 | ||
b34976b6 | 5653 | bfd_boolean |
217aa764 AM |
5654 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5655 | asection *isec, | |
5656 | bfd *obfd, | |
5657 | asection *osec) | |
252b5132 RH |
5658 | { |
5659 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5660 | ||
5661 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5662 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5663 | return TRUE; |
252b5132 | 5664 | |
252b5132 RH |
5665 | ihdr = &elf_section_data (isec)->this_hdr; |
5666 | ohdr = &elf_section_data (osec)->this_hdr; | |
5667 | ||
5668 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5669 | ||
5670 | if (ihdr->sh_type == SHT_SYMTAB | |
5671 | || ihdr->sh_type == SHT_DYNSYM | |
5672 | || ihdr->sh_type == SHT_GNU_verneed | |
5673 | || ihdr->sh_type == SHT_GNU_verdef) | |
5674 | ohdr->sh_info = ihdr->sh_info; | |
5675 | ||
9dce4196 AM |
5676 | /* Set things up for objcopy. The output SHT_GROUP section will |
5677 | have its elf_next_in_group pointing back to the input group | |
278d8f37 L |
5678 | members. Ignore linker created group section. See |
5679 | elfNN_ia64_object_p in elfxx-ia64.c. */ | |
5680 | if (elf_sec_group (isec) == NULL | |
5681 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5682 | { | |
5683 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5684 | elf_group_name (osec) = elf_group_name (isec); | |
5685 | } | |
9dce4196 | 5686 | |
68bfbfcc | 5687 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5688 | |
b34976b6 | 5689 | return TRUE; |
252b5132 RH |
5690 | } |
5691 | ||
80fccad2 BW |
5692 | /* Copy private header information. */ |
5693 | ||
5694 | bfd_boolean | |
5695 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5696 | { | |
5697 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5698 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5699 | return TRUE; | |
5700 | ||
5701 | /* Copy over private BFD data if it has not already been copied. | |
5702 | This must be done here, rather than in the copy_private_bfd_data | |
5703 | entry point, because the latter is called after the section | |
5704 | contents have been set, which means that the program headers have | |
5705 | already been worked out. */ | |
5706 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5707 | { | |
5708 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5709 | return FALSE; | |
5710 | } | |
5711 | ||
5712 | return TRUE; | |
5713 | } | |
5714 | ||
252b5132 RH |
5715 | /* Copy private symbol information. If this symbol is in a section |
5716 | which we did not map into a BFD section, try to map the section | |
5717 | index correctly. We use special macro definitions for the mapped | |
5718 | section indices; these definitions are interpreted by the | |
5719 | swap_out_syms function. */ | |
5720 | ||
9ad5cbcf AM |
5721 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5722 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5723 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5724 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5725 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5726 | |
b34976b6 | 5727 | bfd_boolean |
217aa764 AM |
5728 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5729 | asymbol *isymarg, | |
5730 | bfd *obfd, | |
5731 | asymbol *osymarg) | |
252b5132 RH |
5732 | { |
5733 | elf_symbol_type *isym, *osym; | |
5734 | ||
5735 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5736 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5737 | return TRUE; |
252b5132 RH |
5738 | |
5739 | isym = elf_symbol_from (ibfd, isymarg); | |
5740 | osym = elf_symbol_from (obfd, osymarg); | |
5741 | ||
5742 | if (isym != NULL | |
5743 | && osym != NULL | |
5744 | && bfd_is_abs_section (isym->symbol.section)) | |
5745 | { | |
5746 | unsigned int shndx; | |
5747 | ||
5748 | shndx = isym->internal_elf_sym.st_shndx; | |
5749 | if (shndx == elf_onesymtab (ibfd)) | |
5750 | shndx = MAP_ONESYMTAB; | |
5751 | else if (shndx == elf_dynsymtab (ibfd)) | |
5752 | shndx = MAP_DYNSYMTAB; | |
5753 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5754 | shndx = MAP_STRTAB; | |
5755 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5756 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5757 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5758 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5759 | osym->internal_elf_sym.st_shndx = shndx; |
5760 | } | |
5761 | ||
b34976b6 | 5762 | return TRUE; |
252b5132 RH |
5763 | } |
5764 | ||
5765 | /* Swap out the symbols. */ | |
5766 | ||
b34976b6 | 5767 | static bfd_boolean |
217aa764 AM |
5768 | swap_out_syms (bfd *abfd, |
5769 | struct bfd_strtab_hash **sttp, | |
5770 | int relocatable_p) | |
252b5132 | 5771 | { |
9c5bfbb7 | 5772 | const struct elf_backend_data *bed; |
079e9a2f AM |
5773 | int symcount; |
5774 | asymbol **syms; | |
5775 | struct bfd_strtab_hash *stt; | |
5776 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5777 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5778 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5779 | bfd_byte *outbound_syms; |
5780 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5781 | int idx; |
5782 | bfd_size_type amt; | |
174fd7f9 | 5783 | bfd_boolean name_local_sections; |
252b5132 RH |
5784 | |
5785 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5786 | return FALSE; |
252b5132 | 5787 | |
c044fabd | 5788 | /* Dump out the symtabs. */ |
079e9a2f AM |
5789 | stt = _bfd_elf_stringtab_init (); |
5790 | if (stt == NULL) | |
b34976b6 | 5791 | return FALSE; |
252b5132 | 5792 | |
079e9a2f AM |
5793 | bed = get_elf_backend_data (abfd); |
5794 | symcount = bfd_get_symcount (abfd); | |
5795 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5796 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5797 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5798 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5799 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5800 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5801 | |
5802 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5803 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5804 | ||
5805 | amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; | |
5806 | outbound_syms = bfd_alloc (abfd, amt); | |
5807 | if (outbound_syms == NULL) | |
5ed6aba4 NC |
5808 | { |
5809 | _bfd_stringtab_free (stt); | |
5810 | return FALSE; | |
5811 | } | |
217aa764 | 5812 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5813 | |
9ad5cbcf AM |
5814 | outbound_shndx = NULL; |
5815 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5816 | if (symtab_shndx_hdr->sh_name != 0) | |
5817 | { | |
5818 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
1126897b | 5819 | outbound_shndx = bfd_zalloc (abfd, amt); |
9ad5cbcf | 5820 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5821 | { |
5822 | _bfd_stringtab_free (stt); | |
5823 | return FALSE; | |
5824 | } | |
5825 | ||
9ad5cbcf AM |
5826 | symtab_shndx_hdr->contents = outbound_shndx; |
5827 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5828 | symtab_shndx_hdr->sh_size = amt; | |
5829 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5830 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5831 | } | |
5832 | ||
589e6347 | 5833 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5834 | { |
5835 | /* Fill in zeroth symbol and swap it out. */ | |
5836 | Elf_Internal_Sym sym; | |
5837 | sym.st_name = 0; | |
5838 | sym.st_value = 0; | |
5839 | sym.st_size = 0; | |
5840 | sym.st_info = 0; | |
5841 | sym.st_other = 0; | |
5842 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5843 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5844 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5845 | if (outbound_shndx != NULL) |
5846 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5847 | } |
252b5132 | 5848 | |
174fd7f9 RS |
5849 | name_local_sections |
5850 | = (bed->elf_backend_name_local_section_symbols | |
5851 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5852 | ||
079e9a2f AM |
5853 | syms = bfd_get_outsymbols (abfd); |
5854 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5855 | { |
252b5132 | 5856 | Elf_Internal_Sym sym; |
079e9a2f AM |
5857 | bfd_vma value = syms[idx]->value; |
5858 | elf_symbol_type *type_ptr; | |
5859 | flagword flags = syms[idx]->flags; | |
5860 | int type; | |
252b5132 | 5861 | |
174fd7f9 RS |
5862 | if (!name_local_sections |
5863 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5864 | { |
5865 | /* Local section symbols have no name. */ | |
5866 | sym.st_name = 0; | |
5867 | } | |
5868 | else | |
5869 | { | |
5870 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5871 | syms[idx]->name, | |
b34976b6 | 5872 | TRUE, FALSE); |
079e9a2f | 5873 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5874 | { |
5875 | _bfd_stringtab_free (stt); | |
5876 | return FALSE; | |
5877 | } | |
079e9a2f | 5878 | } |
252b5132 | 5879 | |
079e9a2f | 5880 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5881 | |
079e9a2f AM |
5882 | if ((flags & BSF_SECTION_SYM) == 0 |
5883 | && bfd_is_com_section (syms[idx]->section)) | |
5884 | { | |
5885 | /* ELF common symbols put the alignment into the `value' field, | |
5886 | and the size into the `size' field. This is backwards from | |
5887 | how BFD handles it, so reverse it here. */ | |
5888 | sym.st_size = value; | |
5889 | if (type_ptr == NULL | |
5890 | || type_ptr->internal_elf_sym.st_value == 0) | |
5891 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5892 | else | |
5893 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5894 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5895 | (abfd, syms[idx]->section); | |
5896 | } | |
5897 | else | |
5898 | { | |
5899 | asection *sec = syms[idx]->section; | |
5900 | int shndx; | |
252b5132 | 5901 | |
079e9a2f AM |
5902 | if (sec->output_section) |
5903 | { | |
5904 | value += sec->output_offset; | |
5905 | sec = sec->output_section; | |
5906 | } | |
589e6347 | 5907 | |
079e9a2f AM |
5908 | /* Don't add in the section vma for relocatable output. */ |
5909 | if (! relocatable_p) | |
5910 | value += sec->vma; | |
5911 | sym.st_value = value; | |
5912 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5913 | ||
5914 | if (bfd_is_abs_section (sec) | |
5915 | && type_ptr != NULL | |
5916 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5917 | { | |
5918 | /* This symbol is in a real ELF section which we did | |
5919 | not create as a BFD section. Undo the mapping done | |
5920 | by copy_private_symbol_data. */ | |
5921 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5922 | switch (shndx) | |
5923 | { | |
5924 | case MAP_ONESYMTAB: | |
5925 | shndx = elf_onesymtab (abfd); | |
5926 | break; | |
5927 | case MAP_DYNSYMTAB: | |
5928 | shndx = elf_dynsymtab (abfd); | |
5929 | break; | |
5930 | case MAP_STRTAB: | |
5931 | shndx = elf_tdata (abfd)->strtab_section; | |
5932 | break; | |
5933 | case MAP_SHSTRTAB: | |
5934 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5935 | break; | |
9ad5cbcf AM |
5936 | case MAP_SYM_SHNDX: |
5937 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5938 | break; | |
079e9a2f AM |
5939 | default: |
5940 | break; | |
5941 | } | |
5942 | } | |
5943 | else | |
5944 | { | |
5945 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5946 | |
079e9a2f AM |
5947 | if (shndx == -1) |
5948 | { | |
5949 | asection *sec2; | |
5950 | ||
5951 | /* Writing this would be a hell of a lot easier if | |
5952 | we had some decent documentation on bfd, and | |
5953 | knew what to expect of the library, and what to | |
5954 | demand of applications. For example, it | |
5955 | appears that `objcopy' might not set the | |
5956 | section of a symbol to be a section that is | |
5957 | actually in the output file. */ | |
5958 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5959 | if (sec2 == NULL) |
5960 | { | |
5961 | _bfd_error_handler (_("\ | |
5962 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5963 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5964 | sec->name); | |
811072d8 | 5965 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5966 | _bfd_stringtab_free (stt); |
589e6347 NC |
5967 | return FALSE; |
5968 | } | |
811072d8 | 5969 | |
079e9a2f AM |
5970 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5971 | BFD_ASSERT (shndx != -1); | |
5972 | } | |
5973 | } | |
252b5132 | 5974 | |
079e9a2f AM |
5975 | sym.st_shndx = shndx; |
5976 | } | |
252b5132 | 5977 | |
13ae64f3 JJ |
5978 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5979 | type = STT_TLS; | |
5980 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5981 | type = STT_FUNC; |
5982 | else if ((flags & BSF_OBJECT) != 0) | |
5983 | type = STT_OBJECT; | |
5984 | else | |
5985 | type = STT_NOTYPE; | |
252b5132 | 5986 | |
13ae64f3 JJ |
5987 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5988 | type = STT_TLS; | |
5989 | ||
589e6347 | 5990 | /* Processor-specific types. */ |
079e9a2f AM |
5991 | if (type_ptr != NULL |
5992 | && bed->elf_backend_get_symbol_type) | |
5993 | type = ((*bed->elf_backend_get_symbol_type) | |
5994 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5995 | |
079e9a2f AM |
5996 | if (flags & BSF_SECTION_SYM) |
5997 | { | |
5998 | if (flags & BSF_GLOBAL) | |
5999 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6000 | else | |
6001 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6002 | } | |
6003 | else if (bfd_is_com_section (syms[idx]->section)) | |
6004 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6005 | else if (bfd_is_und_section (syms[idx]->section)) | |
6006 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6007 | ? STB_WEAK | |
6008 | : STB_GLOBAL), | |
6009 | type); | |
6010 | else if (flags & BSF_FILE) | |
6011 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6012 | else | |
6013 | { | |
6014 | int bind = STB_LOCAL; | |
252b5132 | 6015 | |
079e9a2f AM |
6016 | if (flags & BSF_LOCAL) |
6017 | bind = STB_LOCAL; | |
6018 | else if (flags & BSF_WEAK) | |
6019 | bind = STB_WEAK; | |
6020 | else if (flags & BSF_GLOBAL) | |
6021 | bind = STB_GLOBAL; | |
252b5132 | 6022 | |
079e9a2f AM |
6023 | sym.st_info = ELF_ST_INFO (bind, type); |
6024 | } | |
252b5132 | 6025 | |
079e9a2f AM |
6026 | if (type_ptr != NULL) |
6027 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6028 | else | |
6029 | sym.st_other = 0; | |
252b5132 | 6030 | |
9ad5cbcf | 6031 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6032 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6033 | if (outbound_shndx != NULL) |
6034 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6035 | } |
252b5132 | 6036 | |
079e9a2f AM |
6037 | *sttp = stt; |
6038 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6039 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6040 | |
079e9a2f AM |
6041 | symstrtab_hdr->sh_flags = 0; |
6042 | symstrtab_hdr->sh_addr = 0; | |
6043 | symstrtab_hdr->sh_entsize = 0; | |
6044 | symstrtab_hdr->sh_link = 0; | |
6045 | symstrtab_hdr->sh_info = 0; | |
6046 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6047 | |
b34976b6 | 6048 | return TRUE; |
252b5132 RH |
6049 | } |
6050 | ||
6051 | /* Return the number of bytes required to hold the symtab vector. | |
6052 | ||
6053 | Note that we base it on the count plus 1, since we will null terminate | |
6054 | the vector allocated based on this size. However, the ELF symbol table | |
6055 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6056 | ||
6057 | long | |
217aa764 | 6058 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6059 | { |
6060 | long symcount; | |
6061 | long symtab_size; | |
6062 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6063 | ||
6064 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6065 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6066 | if (symcount > 0) | |
6067 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6068 | |
6069 | return symtab_size; | |
6070 | } | |
6071 | ||
6072 | long | |
217aa764 | 6073 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6074 | { |
6075 | long symcount; | |
6076 | long symtab_size; | |
6077 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6078 | ||
6079 | if (elf_dynsymtab (abfd) == 0) | |
6080 | { | |
6081 | bfd_set_error (bfd_error_invalid_operation); | |
6082 | return -1; | |
6083 | } | |
6084 | ||
6085 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6086 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6087 | if (symcount > 0) | |
6088 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6089 | |
6090 | return symtab_size; | |
6091 | } | |
6092 | ||
6093 | long | |
217aa764 AM |
6094 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6095 | sec_ptr asect) | |
252b5132 RH |
6096 | { |
6097 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6098 | } | |
6099 | ||
6100 | /* Canonicalize the relocs. */ | |
6101 | ||
6102 | long | |
217aa764 AM |
6103 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6104 | sec_ptr section, | |
6105 | arelent **relptr, | |
6106 | asymbol **symbols) | |
252b5132 RH |
6107 | { |
6108 | arelent *tblptr; | |
6109 | unsigned int i; | |
9c5bfbb7 | 6110 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6111 | |
b34976b6 | 6112 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6113 | return -1; |
6114 | ||
6115 | tblptr = section->relocation; | |
6116 | for (i = 0; i < section->reloc_count; i++) | |
6117 | *relptr++ = tblptr++; | |
6118 | ||
6119 | *relptr = NULL; | |
6120 | ||
6121 | return section->reloc_count; | |
6122 | } | |
6123 | ||
6124 | long | |
6cee3f79 | 6125 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6126 | { |
9c5bfbb7 | 6127 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6128 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6129 | |
6130 | if (symcount >= 0) | |
6131 | bfd_get_symcount (abfd) = symcount; | |
6132 | return symcount; | |
6133 | } | |
6134 | ||
6135 | long | |
217aa764 AM |
6136 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6137 | asymbol **allocation) | |
252b5132 | 6138 | { |
9c5bfbb7 | 6139 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6140 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6141 | |
6142 | if (symcount >= 0) | |
6143 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6144 | return symcount; | |
252b5132 RH |
6145 | } |
6146 | ||
8615f3f2 AM |
6147 | /* Return the size required for the dynamic reloc entries. Any loadable |
6148 | section that was actually installed in the BFD, and has type SHT_REL | |
6149 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6150 | dynamic reloc section. */ | |
252b5132 RH |
6151 | |
6152 | long | |
217aa764 | 6153 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6154 | { |
6155 | long ret; | |
6156 | asection *s; | |
6157 | ||
6158 | if (elf_dynsymtab (abfd) == 0) | |
6159 | { | |
6160 | bfd_set_error (bfd_error_invalid_operation); | |
6161 | return -1; | |
6162 | } | |
6163 | ||
6164 | ret = sizeof (arelent *); | |
6165 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6166 | if ((s->flags & SEC_LOAD) != 0 |
6167 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6168 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6169 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6170 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6171 | * sizeof (arelent *)); |
6172 | ||
6173 | return ret; | |
6174 | } | |
6175 | ||
8615f3f2 AM |
6176 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6177 | dynamic relocations as a single block, although they are actually | |
6178 | associated with particular sections; the interface, which was | |
6179 | designed for SunOS style shared libraries, expects that there is only | |
6180 | one set of dynamic relocs. Any loadable section that was actually | |
6181 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6182 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6183 | |
6184 | long | |
217aa764 AM |
6185 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6186 | arelent **storage, | |
6187 | asymbol **syms) | |
252b5132 | 6188 | { |
217aa764 | 6189 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6190 | asection *s; |
6191 | long ret; | |
6192 | ||
6193 | if (elf_dynsymtab (abfd) == 0) | |
6194 | { | |
6195 | bfd_set_error (bfd_error_invalid_operation); | |
6196 | return -1; | |
6197 | } | |
6198 | ||
6199 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6200 | ret = 0; | |
6201 | for (s = abfd->sections; s != NULL; s = s->next) | |
6202 | { | |
8615f3f2 AM |
6203 | if ((s->flags & SEC_LOAD) != 0 |
6204 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6205 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6206 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6207 | { | |
6208 | arelent *p; | |
6209 | long count, i; | |
6210 | ||
b34976b6 | 6211 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6212 | return -1; |
eea6121a | 6213 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6214 | p = s->relocation; |
6215 | for (i = 0; i < count; i++) | |
6216 | *storage++ = p++; | |
6217 | ret += count; | |
6218 | } | |
6219 | } | |
6220 | ||
6221 | *storage = NULL; | |
6222 | ||
6223 | return ret; | |
6224 | } | |
6225 | \f | |
6226 | /* Read in the version information. */ | |
6227 | ||
b34976b6 | 6228 | bfd_boolean |
fc0e6df6 | 6229 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6230 | { |
6231 | bfd_byte *contents = NULL; | |
dc810e39 | 6232 | bfd_size_type amt; |
fc0e6df6 PB |
6233 | unsigned int freeidx = 0; |
6234 | ||
6235 | if (elf_dynverref (abfd) != 0) | |
6236 | { | |
6237 | Elf_Internal_Shdr *hdr; | |
6238 | Elf_External_Verneed *everneed; | |
6239 | Elf_Internal_Verneed *iverneed; | |
6240 | unsigned int i; | |
6241 | ||
6242 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6243 | ||
6244 | amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); | |
6245 | elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); | |
6246 | if (elf_tdata (abfd)->verref == NULL) | |
6247 | goto error_return; | |
6248 | ||
6249 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6250 | ||
6251 | contents = bfd_malloc (hdr->sh_size); | |
6252 | if (contents == NULL) | |
6253 | goto error_return; | |
6254 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
6255 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
6256 | goto error_return; | |
6257 | ||
6258 | everneed = (Elf_External_Verneed *) contents; | |
6259 | iverneed = elf_tdata (abfd)->verref; | |
6260 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6261 | { | |
6262 | Elf_External_Vernaux *evernaux; | |
6263 | Elf_Internal_Vernaux *ivernaux; | |
6264 | unsigned int j; | |
6265 | ||
6266 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6267 | ||
6268 | iverneed->vn_bfd = abfd; | |
6269 | ||
6270 | iverneed->vn_filename = | |
6271 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6272 | iverneed->vn_file); | |
6273 | if (iverneed->vn_filename == NULL) | |
6274 | goto error_return; | |
6275 | ||
6276 | amt = iverneed->vn_cnt; | |
6277 | amt *= sizeof (Elf_Internal_Vernaux); | |
6278 | iverneed->vn_auxptr = bfd_alloc (abfd, amt); | |
6279 | ||
6280 | evernaux = ((Elf_External_Vernaux *) | |
6281 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6282 | ivernaux = iverneed->vn_auxptr; | |
6283 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6284 | { | |
6285 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6286 | ||
6287 | ivernaux->vna_nodename = | |
6288 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6289 | ivernaux->vna_name); | |
6290 | if (ivernaux->vna_nodename == NULL) | |
6291 | goto error_return; | |
6292 | ||
6293 | if (j + 1 < iverneed->vn_cnt) | |
6294 | ivernaux->vna_nextptr = ivernaux + 1; | |
6295 | else | |
6296 | ivernaux->vna_nextptr = NULL; | |
6297 | ||
6298 | evernaux = ((Elf_External_Vernaux *) | |
6299 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6300 | ||
6301 | if (ivernaux->vna_other > freeidx) | |
6302 | freeidx = ivernaux->vna_other; | |
6303 | } | |
6304 | ||
6305 | if (i + 1 < hdr->sh_info) | |
6306 | iverneed->vn_nextref = iverneed + 1; | |
6307 | else | |
6308 | iverneed->vn_nextref = NULL; | |
6309 | ||
6310 | everneed = ((Elf_External_Verneed *) | |
6311 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6312 | } | |
6313 | ||
6314 | free (contents); | |
6315 | contents = NULL; | |
6316 | } | |
252b5132 RH |
6317 | |
6318 | if (elf_dynverdef (abfd) != 0) | |
6319 | { | |
6320 | Elf_Internal_Shdr *hdr; | |
6321 | Elf_External_Verdef *everdef; | |
6322 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6323 | Elf_Internal_Verdef *iverdefarr; |
6324 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6325 | unsigned int i; |
062e2358 | 6326 | unsigned int maxidx; |
252b5132 RH |
6327 | |
6328 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6329 | ||
217aa764 | 6330 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6331 | if (contents == NULL) |
6332 | goto error_return; | |
6333 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6334 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6335 | goto error_return; |
6336 | ||
f631889e UD |
6337 | /* We know the number of entries in the section but not the maximum |
6338 | index. Therefore we have to run through all entries and find | |
6339 | the maximum. */ | |
252b5132 | 6340 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6341 | maxidx = 0; |
6342 | for (i = 0; i < hdr->sh_info; ++i) | |
6343 | { | |
6344 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6345 | ||
062e2358 AM |
6346 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6347 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e UD |
6348 | |
6349 | everdef = ((Elf_External_Verdef *) | |
6350 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6351 | } | |
6352 | ||
fc0e6df6 PB |
6353 | if (default_imported_symver) |
6354 | { | |
6355 | if (freeidx > maxidx) | |
6356 | maxidx = ++freeidx; | |
6357 | else | |
6358 | freeidx = ++maxidx; | |
6359 | } | |
dc810e39 | 6360 | amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); |
217aa764 | 6361 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); |
f631889e UD |
6362 | if (elf_tdata (abfd)->verdef == NULL) |
6363 | goto error_return; | |
6364 | ||
6365 | elf_tdata (abfd)->cverdefs = maxidx; | |
6366 | ||
6367 | everdef = (Elf_External_Verdef *) contents; | |
6368 | iverdefarr = elf_tdata (abfd)->verdef; | |
6369 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6370 | { |
6371 | Elf_External_Verdaux *everdaux; | |
6372 | Elf_Internal_Verdaux *iverdaux; | |
6373 | unsigned int j; | |
6374 | ||
f631889e UD |
6375 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6376 | ||
6377 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; | |
6378 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6379 | |
6380 | iverdef->vd_bfd = abfd; | |
6381 | ||
dc810e39 | 6382 | amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); |
217aa764 | 6383 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
6384 | if (iverdef->vd_auxptr == NULL) |
6385 | goto error_return; | |
6386 | ||
6387 | everdaux = ((Elf_External_Verdaux *) | |
6388 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6389 | iverdaux = iverdef->vd_auxptr; | |
6390 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6391 | { | |
6392 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6393 | ||
6394 | iverdaux->vda_nodename = | |
6395 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6396 | iverdaux->vda_name); | |
6397 | if (iverdaux->vda_nodename == NULL) | |
6398 | goto error_return; | |
6399 | ||
6400 | if (j + 1 < iverdef->vd_cnt) | |
6401 | iverdaux->vda_nextptr = iverdaux + 1; | |
6402 | else | |
6403 | iverdaux->vda_nextptr = NULL; | |
6404 | ||
6405 | everdaux = ((Elf_External_Verdaux *) | |
6406 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6407 | } | |
6408 | ||
6409 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
6410 | ||
6411 | if (i + 1 < hdr->sh_info) | |
6412 | iverdef->vd_nextdef = iverdef + 1; | |
6413 | else | |
6414 | iverdef->vd_nextdef = NULL; | |
6415 | ||
6416 | everdef = ((Elf_External_Verdef *) | |
6417 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6418 | } | |
6419 | ||
6420 | free (contents); | |
6421 | contents = NULL; | |
6422 | } | |
fc0e6df6 | 6423 | else if (default_imported_symver) |
252b5132 | 6424 | { |
fc0e6df6 PB |
6425 | if (freeidx < 3) |
6426 | freeidx = 3; | |
6427 | else | |
6428 | freeidx++; | |
252b5132 | 6429 | |
fc0e6df6 PB |
6430 | amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef); |
6431 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); | |
6432 | if (elf_tdata (abfd)->verdef == NULL) | |
252b5132 RH |
6433 | goto error_return; |
6434 | ||
fc0e6df6 PB |
6435 | elf_tdata (abfd)->cverdefs = freeidx; |
6436 | } | |
252b5132 | 6437 | |
fc0e6df6 PB |
6438 | /* Create a default version based on the soname. */ |
6439 | if (default_imported_symver) | |
6440 | { | |
6441 | Elf_Internal_Verdef *iverdef; | |
6442 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6443 | |
fc0e6df6 | 6444 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6445 | |
fc0e6df6 PB |
6446 | iverdef->vd_version = VER_DEF_CURRENT; |
6447 | iverdef->vd_flags = 0; | |
6448 | iverdef->vd_ndx = freeidx; | |
6449 | iverdef->vd_cnt = 1; | |
252b5132 | 6450 | |
fc0e6df6 | 6451 | iverdef->vd_bfd = abfd; |
252b5132 | 6452 | |
fc0e6df6 PB |
6453 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6454 | if (iverdef->vd_nodename == NULL) | |
6455 | goto error_return; | |
6456 | iverdef->vd_nextdef = NULL; | |
6457 | amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux); | |
6458 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); | |
252b5132 | 6459 | |
fc0e6df6 PB |
6460 | iverdaux = iverdef->vd_auxptr; |
6461 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6462 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6463 | } |
6464 | ||
b34976b6 | 6465 | return TRUE; |
252b5132 RH |
6466 | |
6467 | error_return: | |
5ed6aba4 | 6468 | if (contents != NULL) |
252b5132 | 6469 | free (contents); |
b34976b6 | 6470 | return FALSE; |
252b5132 RH |
6471 | } |
6472 | \f | |
6473 | asymbol * | |
217aa764 | 6474 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6475 | { |
6476 | elf_symbol_type *newsym; | |
dc810e39 | 6477 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6478 | |
217aa764 | 6479 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6480 | if (!newsym) |
6481 | return NULL; | |
6482 | else | |
6483 | { | |
6484 | newsym->symbol.the_bfd = abfd; | |
6485 | return &newsym->symbol; | |
6486 | } | |
6487 | } | |
6488 | ||
6489 | void | |
217aa764 AM |
6490 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6491 | asymbol *symbol, | |
6492 | symbol_info *ret) | |
252b5132 RH |
6493 | { |
6494 | bfd_symbol_info (symbol, ret); | |
6495 | } | |
6496 | ||
6497 | /* Return whether a symbol name implies a local symbol. Most targets | |
6498 | use this function for the is_local_label_name entry point, but some | |
6499 | override it. */ | |
6500 | ||
b34976b6 | 6501 | bfd_boolean |
217aa764 AM |
6502 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6503 | const char *name) | |
252b5132 RH |
6504 | { |
6505 | /* Normal local symbols start with ``.L''. */ | |
6506 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6507 | return TRUE; |
252b5132 RH |
6508 | |
6509 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6510 | DWARF debugging symbols starting with ``..''. */ | |
6511 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6512 | return TRUE; |
252b5132 RH |
6513 | |
6514 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6515 | emitting DWARF debugging output. I suspect this is actually a | |
6516 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6517 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6518 | underscore to be emitted on some ELF targets). For ease of use, | |
6519 | we treat such symbols as local. */ | |
6520 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6521 | return TRUE; |
252b5132 | 6522 | |
b34976b6 | 6523 | return FALSE; |
252b5132 RH |
6524 | } |
6525 | ||
6526 | alent * | |
217aa764 AM |
6527 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6528 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6529 | { |
6530 | abort (); | |
6531 | return NULL; | |
6532 | } | |
6533 | ||
b34976b6 | 6534 | bfd_boolean |
217aa764 AM |
6535 | _bfd_elf_set_arch_mach (bfd *abfd, |
6536 | enum bfd_architecture arch, | |
6537 | unsigned long machine) | |
252b5132 RH |
6538 | { |
6539 | /* If this isn't the right architecture for this backend, and this | |
6540 | isn't the generic backend, fail. */ | |
6541 | if (arch != get_elf_backend_data (abfd)->arch | |
6542 | && arch != bfd_arch_unknown | |
6543 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6544 | return FALSE; |
252b5132 RH |
6545 | |
6546 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6547 | } | |
6548 | ||
d1fad7c6 NC |
6549 | /* Find the function to a particular section and offset, |
6550 | for error reporting. */ | |
252b5132 | 6551 | |
b34976b6 | 6552 | static bfd_boolean |
217aa764 AM |
6553 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6554 | asection *section, | |
6555 | asymbol **symbols, | |
6556 | bfd_vma offset, | |
6557 | const char **filename_ptr, | |
6558 | const char **functionname_ptr) | |
252b5132 | 6559 | { |
252b5132 | 6560 | const char *filename; |
57426232 | 6561 | asymbol *func, *file; |
252b5132 RH |
6562 | bfd_vma low_func; |
6563 | asymbol **p; | |
57426232 JB |
6564 | /* ??? Given multiple file symbols, it is impossible to reliably |
6565 | choose the right file name for global symbols. File symbols are | |
6566 | local symbols, and thus all file symbols must sort before any | |
6567 | global symbols. The ELF spec may be interpreted to say that a | |
6568 | file symbol must sort before other local symbols, but currently | |
6569 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6570 | make a better choice of file name for local symbols by ignoring | |
6571 | file symbols appearing after a given local symbol. */ | |
6572 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6573 | |
252b5132 RH |
6574 | filename = NULL; |
6575 | func = NULL; | |
57426232 | 6576 | file = NULL; |
252b5132 | 6577 | low_func = 0; |
57426232 | 6578 | state = nothing_seen; |
252b5132 RH |
6579 | |
6580 | for (p = symbols; *p != NULL; p++) | |
6581 | { | |
6582 | elf_symbol_type *q; | |
6583 | ||
6584 | q = (elf_symbol_type *) *p; | |
6585 | ||
252b5132 RH |
6586 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6587 | { | |
6588 | default: | |
6589 | break; | |
6590 | case STT_FILE: | |
57426232 JB |
6591 | file = &q->symbol; |
6592 | if (state == symbol_seen) | |
6593 | state = file_after_symbol_seen; | |
6594 | continue; | |
6595 | case STT_SECTION: | |
6596 | continue; | |
252b5132 RH |
6597 | case STT_NOTYPE: |
6598 | case STT_FUNC: | |
6b40fcba | 6599 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6600 | && q->symbol.value >= low_func |
6601 | && q->symbol.value <= offset) | |
6602 | { | |
6603 | func = (asymbol *) q; | |
6604 | low_func = q->symbol.value; | |
57426232 JB |
6605 | if (file == NULL) |
6606 | filename = NULL; | |
6607 | else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL | |
6608 | && state == file_after_symbol_seen) | |
6609 | filename = NULL; | |
6610 | else | |
6611 | filename = bfd_asymbol_name (file); | |
252b5132 RH |
6612 | } |
6613 | break; | |
6614 | } | |
57426232 JB |
6615 | if (state == nothing_seen) |
6616 | state = symbol_seen; | |
252b5132 RH |
6617 | } |
6618 | ||
6619 | if (func == NULL) | |
b34976b6 | 6620 | return FALSE; |
252b5132 | 6621 | |
d1fad7c6 NC |
6622 | if (filename_ptr) |
6623 | *filename_ptr = filename; | |
6624 | if (functionname_ptr) | |
6625 | *functionname_ptr = bfd_asymbol_name (func); | |
6626 | ||
b34976b6 | 6627 | return TRUE; |
d1fad7c6 NC |
6628 | } |
6629 | ||
6630 | /* Find the nearest line to a particular section and offset, | |
6631 | for error reporting. */ | |
6632 | ||
b34976b6 | 6633 | bfd_boolean |
217aa764 AM |
6634 | _bfd_elf_find_nearest_line (bfd *abfd, |
6635 | asection *section, | |
6636 | asymbol **symbols, | |
6637 | bfd_vma offset, | |
6638 | const char **filename_ptr, | |
6639 | const char **functionname_ptr, | |
6640 | unsigned int *line_ptr) | |
d1fad7c6 | 6641 | { |
b34976b6 | 6642 | bfd_boolean found; |
d1fad7c6 NC |
6643 | |
6644 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6645 | filename_ptr, functionname_ptr, |
6646 | line_ptr)) | |
d1fad7c6 NC |
6647 | { |
6648 | if (!*functionname_ptr) | |
4e8a9624 AM |
6649 | elf_find_function (abfd, section, symbols, offset, |
6650 | *filename_ptr ? NULL : filename_ptr, | |
6651 | functionname_ptr); | |
6652 | ||
b34976b6 | 6653 | return TRUE; |
d1fad7c6 NC |
6654 | } |
6655 | ||
6656 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6657 | filename_ptr, functionname_ptr, |
6658 | line_ptr, 0, | |
6659 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6660 | { |
6661 | if (!*functionname_ptr) | |
4e8a9624 AM |
6662 | elf_find_function (abfd, section, symbols, offset, |
6663 | *filename_ptr ? NULL : filename_ptr, | |
6664 | functionname_ptr); | |
6665 | ||
b34976b6 | 6666 | return TRUE; |
d1fad7c6 NC |
6667 | } |
6668 | ||
6669 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6670 | &found, filename_ptr, |
6671 | functionname_ptr, line_ptr, | |
6672 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6673 | return FALSE; |
dc43ada5 | 6674 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6675 | return TRUE; |
d1fad7c6 NC |
6676 | |
6677 | if (symbols == NULL) | |
b34976b6 | 6678 | return FALSE; |
d1fad7c6 NC |
6679 | |
6680 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6681 | filename_ptr, functionname_ptr)) |
b34976b6 | 6682 | return FALSE; |
d1fad7c6 | 6683 | |
252b5132 | 6684 | *line_ptr = 0; |
b34976b6 | 6685 | return TRUE; |
252b5132 RH |
6686 | } |
6687 | ||
6688 | int | |
217aa764 | 6689 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6690 | { |
6691 | int ret; | |
6692 | ||
6693 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6694 | if (! reloc) | |
6695 | ret += get_program_header_size (abfd); | |
6696 | return ret; | |
6697 | } | |
6698 | ||
b34976b6 | 6699 | bfd_boolean |
217aa764 AM |
6700 | _bfd_elf_set_section_contents (bfd *abfd, |
6701 | sec_ptr section, | |
0f867abe | 6702 | const void *location, |
217aa764 AM |
6703 | file_ptr offset, |
6704 | bfd_size_type count) | |
252b5132 RH |
6705 | { |
6706 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6707 | bfd_signed_vma pos; |
252b5132 RH |
6708 | |
6709 | if (! abfd->output_has_begun | |
217aa764 | 6710 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6711 | return FALSE; |
252b5132 RH |
6712 | |
6713 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6714 | pos = hdr->sh_offset + offset; |
6715 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6716 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6717 | return FALSE; |
252b5132 | 6718 | |
b34976b6 | 6719 | return TRUE; |
252b5132 RH |
6720 | } |
6721 | ||
6722 | void | |
217aa764 AM |
6723 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6724 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6725 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6726 | { |
6727 | abort (); | |
6728 | } | |
6729 | ||
252b5132 RH |
6730 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6731 | ||
b34976b6 | 6732 | bfd_boolean |
217aa764 | 6733 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6734 | { |
c044fabd | 6735 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6736 | |
6737 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6738 | { | |
6739 | bfd_reloc_code_real_type code; | |
6740 | reloc_howto_type *howto; | |
6741 | ||
6742 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6743 | equivalent ELF reloc. */ |
252b5132 RH |
6744 | |
6745 | if (areloc->howto->pc_relative) | |
6746 | { | |
6747 | switch (areloc->howto->bitsize) | |
6748 | { | |
6749 | case 8: | |
6750 | code = BFD_RELOC_8_PCREL; | |
6751 | break; | |
6752 | case 12: | |
6753 | code = BFD_RELOC_12_PCREL; | |
6754 | break; | |
6755 | case 16: | |
6756 | code = BFD_RELOC_16_PCREL; | |
6757 | break; | |
6758 | case 24: | |
6759 | code = BFD_RELOC_24_PCREL; | |
6760 | break; | |
6761 | case 32: | |
6762 | code = BFD_RELOC_32_PCREL; | |
6763 | break; | |
6764 | case 64: | |
6765 | code = BFD_RELOC_64_PCREL; | |
6766 | break; | |
6767 | default: | |
6768 | goto fail; | |
6769 | } | |
6770 | ||
6771 | howto = bfd_reloc_type_lookup (abfd, code); | |
6772 | ||
6773 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6774 | { | |
6775 | if (howto->pcrel_offset) | |
6776 | areloc->addend += areloc->address; | |
6777 | else | |
6778 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6779 | } | |
6780 | } | |
6781 | else | |
6782 | { | |
6783 | switch (areloc->howto->bitsize) | |
6784 | { | |
6785 | case 8: | |
6786 | code = BFD_RELOC_8; | |
6787 | break; | |
6788 | case 14: | |
6789 | code = BFD_RELOC_14; | |
6790 | break; | |
6791 | case 16: | |
6792 | code = BFD_RELOC_16; | |
6793 | break; | |
6794 | case 26: | |
6795 | code = BFD_RELOC_26; | |
6796 | break; | |
6797 | case 32: | |
6798 | code = BFD_RELOC_32; | |
6799 | break; | |
6800 | case 64: | |
6801 | code = BFD_RELOC_64; | |
6802 | break; | |
6803 | default: | |
6804 | goto fail; | |
6805 | } | |
6806 | ||
6807 | howto = bfd_reloc_type_lookup (abfd, code); | |
6808 | } | |
6809 | ||
6810 | if (howto) | |
6811 | areloc->howto = howto; | |
6812 | else | |
6813 | goto fail; | |
6814 | } | |
6815 | ||
b34976b6 | 6816 | return TRUE; |
252b5132 RH |
6817 | |
6818 | fail: | |
6819 | (*_bfd_error_handler) | |
d003868e AM |
6820 | (_("%B: unsupported relocation type %s"), |
6821 | abfd, areloc->howto->name); | |
252b5132 | 6822 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6823 | return FALSE; |
252b5132 RH |
6824 | } |
6825 | ||
b34976b6 | 6826 | bfd_boolean |
217aa764 | 6827 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6828 | { |
6829 | if (bfd_get_format (abfd) == bfd_object) | |
6830 | { | |
6831 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6832 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 6833 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
6834 | } |
6835 | ||
6836 | return _bfd_generic_close_and_cleanup (abfd); | |
6837 | } | |
6838 | ||
6839 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6840 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6841 | range-checking to interfere. There is nothing else to do in processing | |
6842 | this reloc. */ | |
6843 | ||
6844 | bfd_reloc_status_type | |
217aa764 AM |
6845 | _bfd_elf_rel_vtable_reloc_fn |
6846 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6847 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6848 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6849 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6850 | { |
6851 | return bfd_reloc_ok; | |
6852 | } | |
252b5132 RH |
6853 | \f |
6854 | /* Elf core file support. Much of this only works on native | |
6855 | toolchains, since we rely on knowing the | |
6856 | machine-dependent procfs structure in order to pick | |
c044fabd | 6857 | out details about the corefile. */ |
252b5132 RH |
6858 | |
6859 | #ifdef HAVE_SYS_PROCFS_H | |
6860 | # include <sys/procfs.h> | |
6861 | #endif | |
6862 | ||
c044fabd | 6863 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6864 | |
6865 | static int | |
217aa764 | 6866 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6867 | { |
6868 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6869 | + (elf_tdata (abfd)->core_pid)); | |
6870 | } | |
6871 | ||
252b5132 RH |
6872 | /* If there isn't a section called NAME, make one, using |
6873 | data from SECT. Note, this function will generate a | |
6874 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6875 | overwrite it. */ |
252b5132 | 6876 | |
b34976b6 | 6877 | static bfd_boolean |
217aa764 | 6878 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6879 | { |
c044fabd | 6880 | asection *sect2; |
252b5132 RH |
6881 | |
6882 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6883 | return TRUE; |
252b5132 RH |
6884 | |
6885 | sect2 = bfd_make_section (abfd, name); | |
6886 | if (sect2 == NULL) | |
b34976b6 | 6887 | return FALSE; |
252b5132 | 6888 | |
eea6121a | 6889 | sect2->size = sect->size; |
252b5132 RH |
6890 | sect2->filepos = sect->filepos; |
6891 | sect2->flags = sect->flags; | |
6892 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6893 | return TRUE; |
252b5132 RH |
6894 | } |
6895 | ||
bb0082d6 AM |
6896 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6897 | actually creates up to two pseudosections: | |
6898 | - For the single-threaded case, a section named NAME, unless | |
6899 | such a section already exists. | |
6900 | - For the multi-threaded case, a section named "NAME/PID", where | |
6901 | PID is elfcore_make_pid (abfd). | |
6902 | Both pseudosections have identical contents. */ | |
b34976b6 | 6903 | bfd_boolean |
217aa764 AM |
6904 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6905 | char *name, | |
6906 | size_t size, | |
6907 | ufile_ptr filepos) | |
bb0082d6 AM |
6908 | { |
6909 | char buf[100]; | |
6910 | char *threaded_name; | |
d4c88bbb | 6911 | size_t len; |
bb0082d6 AM |
6912 | asection *sect; |
6913 | ||
6914 | /* Build the section name. */ | |
6915 | ||
6916 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 6917 | len = strlen (buf) + 1; |
217aa764 | 6918 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 6919 | if (threaded_name == NULL) |
b34976b6 | 6920 | return FALSE; |
d4c88bbb | 6921 | memcpy (threaded_name, buf, len); |
bb0082d6 | 6922 | |
62f3bb11 | 6923 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 6924 | if (sect == NULL) |
b34976b6 | 6925 | return FALSE; |
eea6121a | 6926 | sect->size = size; |
bb0082d6 AM |
6927 | sect->filepos = filepos; |
6928 | sect->flags = SEC_HAS_CONTENTS; | |
6929 | sect->alignment_power = 2; | |
6930 | ||
936e320b | 6931 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
6932 | } |
6933 | ||
252b5132 | 6934 | /* prstatus_t exists on: |
4a938328 | 6935 | solaris 2.5+ |
252b5132 RH |
6936 | linux 2.[01] + glibc |
6937 | unixware 4.2 | |
6938 | */ | |
6939 | ||
6940 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 6941 | |
b34976b6 | 6942 | static bfd_boolean |
217aa764 | 6943 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6944 | { |
eea6121a | 6945 | size_t size; |
7ee38065 | 6946 | int offset; |
252b5132 | 6947 | |
4a938328 MS |
6948 | if (note->descsz == sizeof (prstatus_t)) |
6949 | { | |
6950 | prstatus_t prstat; | |
252b5132 | 6951 | |
eea6121a | 6952 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6953 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 6954 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 6955 | |
fa49d224 NC |
6956 | /* Do not overwrite the core signal if it |
6957 | has already been set by another thread. */ | |
6958 | if (elf_tdata (abfd)->core_signal == 0) | |
6959 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 6960 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 6961 | |
4a938328 MS |
6962 | /* pr_who exists on: |
6963 | solaris 2.5+ | |
6964 | unixware 4.2 | |
6965 | pr_who doesn't exist on: | |
6966 | linux 2.[01] | |
6967 | */ | |
252b5132 | 6968 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 6969 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 6970 | #endif |
4a938328 | 6971 | } |
7ee38065 | 6972 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
6973 | else if (note->descsz == sizeof (prstatus32_t)) |
6974 | { | |
6975 | /* 64-bit host, 32-bit corefile */ | |
6976 | prstatus32_t prstat; | |
6977 | ||
eea6121a | 6978 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6979 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
6980 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
6981 | ||
fa49d224 NC |
6982 | /* Do not overwrite the core signal if it |
6983 | has already been set by another thread. */ | |
6984 | if (elf_tdata (abfd)->core_signal == 0) | |
6985 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
6986 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
6987 | ||
6988 | /* pr_who exists on: | |
6989 | solaris 2.5+ | |
6990 | unixware 4.2 | |
6991 | pr_who doesn't exist on: | |
6992 | linux 2.[01] | |
6993 | */ | |
7ee38065 | 6994 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
6995 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
6996 | #endif | |
6997 | } | |
7ee38065 | 6998 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
6999 | else |
7000 | { | |
7001 | /* Fail - we don't know how to handle any other | |
7002 | note size (ie. data object type). */ | |
b34976b6 | 7003 | return TRUE; |
4a938328 | 7004 | } |
252b5132 | 7005 | |
bb0082d6 | 7006 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7007 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7008 | size, note->descpos + offset); |
252b5132 RH |
7009 | } |
7010 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7011 | ||
bb0082d6 | 7012 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7013 | static bfd_boolean |
217aa764 AM |
7014 | elfcore_make_note_pseudosection (bfd *abfd, |
7015 | char *name, | |
7016 | Elf_Internal_Note *note) | |
252b5132 | 7017 | { |
936e320b AM |
7018 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7019 | note->descsz, note->descpos); | |
252b5132 RH |
7020 | } |
7021 | ||
ff08c6bb JB |
7022 | /* There isn't a consistent prfpregset_t across platforms, |
7023 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7024 | data structure apart. */ |
7025 | ||
b34976b6 | 7026 | static bfd_boolean |
217aa764 | 7027 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7028 | { |
7029 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7030 | } | |
7031 | ||
ff08c6bb JB |
7032 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7033 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7034 | literally. */ | |
c044fabd | 7035 | |
b34976b6 | 7036 | static bfd_boolean |
217aa764 | 7037 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7038 | { |
7039 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7040 | } | |
7041 | ||
252b5132 | 7042 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7043 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7044 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7045 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7046 | #endif | |
252b5132 RH |
7047 | #endif |
7048 | ||
7049 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7050 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7051 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7052 | typedef psinfo32_t elfcore_psinfo32_t; |
7053 | #endif | |
252b5132 RH |
7054 | #endif |
7055 | ||
252b5132 RH |
7056 | /* return a malloc'ed copy of a string at START which is at |
7057 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7058 | the copy will always have a terminating '\0'. */ |
252b5132 | 7059 | |
936e320b | 7060 | char * |
217aa764 | 7061 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7062 | { |
dc810e39 | 7063 | char *dups; |
c044fabd | 7064 | char *end = memchr (start, '\0', max); |
dc810e39 | 7065 | size_t len; |
252b5132 RH |
7066 | |
7067 | if (end == NULL) | |
7068 | len = max; | |
7069 | else | |
7070 | len = end - start; | |
7071 | ||
217aa764 | 7072 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7073 | if (dups == NULL) |
252b5132 RH |
7074 | return NULL; |
7075 | ||
dc810e39 AM |
7076 | memcpy (dups, start, len); |
7077 | dups[len] = '\0'; | |
252b5132 | 7078 | |
dc810e39 | 7079 | return dups; |
252b5132 RH |
7080 | } |
7081 | ||
bb0082d6 | 7082 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7083 | static bfd_boolean |
217aa764 | 7084 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7085 | { |
4a938328 MS |
7086 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7087 | { | |
7088 | elfcore_psinfo_t psinfo; | |
252b5132 | 7089 | |
7ee38065 | 7090 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7091 | |
4a938328 | 7092 | elf_tdata (abfd)->core_program |
936e320b AM |
7093 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7094 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7095 | |
4a938328 | 7096 | elf_tdata (abfd)->core_command |
936e320b AM |
7097 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7098 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7099 | } |
7ee38065 | 7100 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7101 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7102 | { | |
7103 | /* 64-bit host, 32-bit corefile */ | |
7104 | elfcore_psinfo32_t psinfo; | |
7105 | ||
7ee38065 | 7106 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7107 | |
4a938328 | 7108 | elf_tdata (abfd)->core_program |
936e320b AM |
7109 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7110 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7111 | |
7112 | elf_tdata (abfd)->core_command | |
936e320b AM |
7113 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7114 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7115 | } |
7116 | #endif | |
7117 | ||
7118 | else | |
7119 | { | |
7120 | /* Fail - we don't know how to handle any other | |
7121 | note size (ie. data object type). */ | |
b34976b6 | 7122 | return TRUE; |
4a938328 | 7123 | } |
252b5132 RH |
7124 | |
7125 | /* Note that for some reason, a spurious space is tacked | |
7126 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7127 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7128 | |
7129 | { | |
c044fabd | 7130 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7131 | int n = strlen (command); |
7132 | ||
7133 | if (0 < n && command[n - 1] == ' ') | |
7134 | command[n - 1] = '\0'; | |
7135 | } | |
7136 | ||
b34976b6 | 7137 | return TRUE; |
252b5132 RH |
7138 | } |
7139 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7140 | ||
252b5132 | 7141 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7142 | static bfd_boolean |
217aa764 | 7143 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7144 | { |
f572a39d AM |
7145 | if (note->descsz == sizeof (pstatus_t) |
7146 | #if defined (HAVE_PXSTATUS_T) | |
7147 | || note->descsz == sizeof (pxstatus_t) | |
7148 | #endif | |
7149 | ) | |
4a938328 MS |
7150 | { |
7151 | pstatus_t pstat; | |
252b5132 | 7152 | |
4a938328 | 7153 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7154 | |
4a938328 MS |
7155 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7156 | } | |
7ee38065 | 7157 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7158 | else if (note->descsz == sizeof (pstatus32_t)) |
7159 | { | |
7160 | /* 64-bit host, 32-bit corefile */ | |
7161 | pstatus32_t pstat; | |
252b5132 | 7162 | |
4a938328 | 7163 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7164 | |
4a938328 MS |
7165 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7166 | } | |
7167 | #endif | |
252b5132 RH |
7168 | /* Could grab some more details from the "representative" |
7169 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7170 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7171 | |
b34976b6 | 7172 | return TRUE; |
252b5132 RH |
7173 | } |
7174 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7175 | ||
252b5132 | 7176 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7177 | static bfd_boolean |
217aa764 | 7178 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7179 | { |
7180 | lwpstatus_t lwpstat; | |
7181 | char buf[100]; | |
c044fabd | 7182 | char *name; |
d4c88bbb | 7183 | size_t len; |
c044fabd | 7184 | asection *sect; |
252b5132 | 7185 | |
f572a39d AM |
7186 | if (note->descsz != sizeof (lwpstat) |
7187 | #if defined (HAVE_LWPXSTATUS_T) | |
7188 | && note->descsz != sizeof (lwpxstatus_t) | |
7189 | #endif | |
7190 | ) | |
b34976b6 | 7191 | return TRUE; |
252b5132 RH |
7192 | |
7193 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7194 | ||
7195 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7196 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7197 | ||
c044fabd | 7198 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7199 | |
7200 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7201 | len = strlen (buf) + 1; |
217aa764 | 7202 | name = bfd_alloc (abfd, len); |
252b5132 | 7203 | if (name == NULL) |
b34976b6 | 7204 | return FALSE; |
d4c88bbb | 7205 | memcpy (name, buf, len); |
252b5132 | 7206 | |
62f3bb11 | 7207 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7208 | if (sect == NULL) |
b34976b6 | 7209 | return FALSE; |
252b5132 RH |
7210 | |
7211 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7212 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7213 | sect->filepos = note->descpos |
7214 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7215 | #endif | |
7216 | ||
7217 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7218 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7219 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7220 | #endif | |
7221 | ||
7222 | sect->flags = SEC_HAS_CONTENTS; | |
7223 | sect->alignment_power = 2; | |
7224 | ||
7225 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7226 | return FALSE; |
252b5132 RH |
7227 | |
7228 | /* Make a ".reg2/999" section */ | |
7229 | ||
7230 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7231 | len = strlen (buf) + 1; |
217aa764 | 7232 | name = bfd_alloc (abfd, len); |
252b5132 | 7233 | if (name == NULL) |
b34976b6 | 7234 | return FALSE; |
d4c88bbb | 7235 | memcpy (name, buf, len); |
252b5132 | 7236 | |
62f3bb11 | 7237 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7238 | if (sect == NULL) |
b34976b6 | 7239 | return FALSE; |
252b5132 RH |
7240 | |
7241 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7242 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7243 | sect->filepos = note->descpos |
7244 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7245 | #endif | |
7246 | ||
7247 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7248 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7249 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7250 | #endif | |
7251 | ||
7252 | sect->flags = SEC_HAS_CONTENTS; | |
7253 | sect->alignment_power = 2; | |
7254 | ||
936e320b | 7255 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7256 | } |
7257 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7258 | ||
16e9c715 | 7259 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7260 | static bfd_boolean |
217aa764 | 7261 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7262 | { |
7263 | char buf[30]; | |
c044fabd | 7264 | char *name; |
d4c88bbb | 7265 | size_t len; |
c044fabd | 7266 | asection *sect; |
16e9c715 NC |
7267 | win32_pstatus_t pstatus; |
7268 | ||
7269 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7270 | return TRUE; |
16e9c715 | 7271 | |
e8eab623 | 7272 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7273 | |
7274 | switch (pstatus.data_type) | |
16e9c715 NC |
7275 | { |
7276 | case NOTE_INFO_PROCESS: | |
7277 | /* FIXME: need to add ->core_command. */ | |
7278 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7279 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7280 | break; |
16e9c715 NC |
7281 | |
7282 | case NOTE_INFO_THREAD: | |
7283 | /* Make a ".reg/999" section. */ | |
1f170678 | 7284 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7285 | |
d4c88bbb | 7286 | len = strlen (buf) + 1; |
217aa764 | 7287 | name = bfd_alloc (abfd, len); |
16e9c715 | 7288 | if (name == NULL) |
b34976b6 | 7289 | return FALSE; |
c044fabd | 7290 | |
d4c88bbb | 7291 | memcpy (name, buf, len); |
16e9c715 | 7292 | |
62f3bb11 | 7293 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7294 | if (sect == NULL) |
b34976b6 | 7295 | return FALSE; |
c044fabd | 7296 | |
eea6121a | 7297 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7298 | sect->filepos = (note->descpos |
7299 | + offsetof (struct win32_pstatus, | |
7300 | data.thread_info.thread_context)); | |
16e9c715 NC |
7301 | sect->flags = SEC_HAS_CONTENTS; |
7302 | sect->alignment_power = 2; | |
7303 | ||
7304 | if (pstatus.data.thread_info.is_active_thread) | |
7305 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7306 | return FALSE; |
16e9c715 NC |
7307 | break; |
7308 | ||
7309 | case NOTE_INFO_MODULE: | |
7310 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7311 | sprintf (buf, ".module/%08lx", |
7312 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7313 | |
d4c88bbb | 7314 | len = strlen (buf) + 1; |
217aa764 | 7315 | name = bfd_alloc (abfd, len); |
16e9c715 | 7316 | if (name == NULL) |
b34976b6 | 7317 | return FALSE; |
c044fabd | 7318 | |
d4c88bbb | 7319 | memcpy (name, buf, len); |
252b5132 | 7320 | |
62f3bb11 | 7321 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7322 | |
16e9c715 | 7323 | if (sect == NULL) |
b34976b6 | 7324 | return FALSE; |
c044fabd | 7325 | |
eea6121a | 7326 | sect->size = note->descsz; |
16e9c715 NC |
7327 | sect->filepos = note->descpos; |
7328 | sect->flags = SEC_HAS_CONTENTS; | |
7329 | sect->alignment_power = 2; | |
7330 | break; | |
7331 | ||
7332 | default: | |
b34976b6 | 7333 | return TRUE; |
16e9c715 NC |
7334 | } |
7335 | ||
b34976b6 | 7336 | return TRUE; |
16e9c715 NC |
7337 | } |
7338 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7339 | |
b34976b6 | 7340 | static bfd_boolean |
217aa764 | 7341 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7342 | { |
9c5bfbb7 | 7343 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7344 | |
252b5132 RH |
7345 | switch (note->type) |
7346 | { | |
7347 | default: | |
b34976b6 | 7348 | return TRUE; |
252b5132 | 7349 | |
252b5132 | 7350 | case NT_PRSTATUS: |
bb0082d6 AM |
7351 | if (bed->elf_backend_grok_prstatus) |
7352 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7353 | return TRUE; |
bb0082d6 | 7354 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7355 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7356 | #else |
b34976b6 | 7357 | return TRUE; |
252b5132 RH |
7358 | #endif |
7359 | ||
7360 | #if defined (HAVE_PSTATUS_T) | |
7361 | case NT_PSTATUS: | |
7362 | return elfcore_grok_pstatus (abfd, note); | |
7363 | #endif | |
7364 | ||
7365 | #if defined (HAVE_LWPSTATUS_T) | |
7366 | case NT_LWPSTATUS: | |
7367 | return elfcore_grok_lwpstatus (abfd, note); | |
7368 | #endif | |
7369 | ||
7370 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7371 | return elfcore_grok_prfpreg (abfd, note); | |
7372 | ||
16e9c715 | 7373 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7374 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7375 | return elfcore_grok_win32pstatus (abfd, note); |
7376 | #endif | |
7377 | ||
c044fabd | 7378 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7379 | if (note->namesz == 6 |
7380 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7381 | return elfcore_grok_prxfpreg (abfd, note); |
7382 | else | |
b34976b6 | 7383 | return TRUE; |
ff08c6bb | 7384 | |
252b5132 RH |
7385 | case NT_PRPSINFO: |
7386 | case NT_PSINFO: | |
bb0082d6 AM |
7387 | if (bed->elf_backend_grok_psinfo) |
7388 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7389 | return TRUE; |
bb0082d6 | 7390 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7391 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7392 | #else |
b34976b6 | 7393 | return TRUE; |
252b5132 | 7394 | #endif |
3333a7c3 RM |
7395 | |
7396 | case NT_AUXV: | |
7397 | { | |
62f3bb11 | 7398 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7399 | |
7400 | if (sect == NULL) | |
7401 | return FALSE; | |
eea6121a | 7402 | sect->size = note->descsz; |
3333a7c3 RM |
7403 | sect->filepos = note->descpos; |
7404 | sect->flags = SEC_HAS_CONTENTS; | |
7405 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7406 | ||
7407 | return TRUE; | |
7408 | } | |
252b5132 RH |
7409 | } |
7410 | } | |
7411 | ||
b34976b6 | 7412 | static bfd_boolean |
217aa764 | 7413 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7414 | { |
7415 | char *cp; | |
7416 | ||
7417 | cp = strchr (note->namedata, '@'); | |
7418 | if (cp != NULL) | |
7419 | { | |
d2b64500 | 7420 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7421 | return TRUE; |
50b2bdb7 | 7422 | } |
b34976b6 | 7423 | return FALSE; |
50b2bdb7 AM |
7424 | } |
7425 | ||
b34976b6 | 7426 | static bfd_boolean |
217aa764 | 7427 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7428 | { |
7429 | ||
7430 | /* Signal number at offset 0x08. */ | |
7431 | elf_tdata (abfd)->core_signal | |
7432 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7433 | ||
7434 | /* Process ID at offset 0x50. */ | |
7435 | elf_tdata (abfd)->core_pid | |
7436 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7437 | ||
7438 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7439 | elf_tdata (abfd)->core_command | |
7440 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7441 | ||
7720ba9f MK |
7442 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7443 | note); | |
50b2bdb7 AM |
7444 | } |
7445 | ||
b34976b6 | 7446 | static bfd_boolean |
217aa764 | 7447 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7448 | { |
7449 | int lwp; | |
7450 | ||
7451 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7452 | elf_tdata (abfd)->core_lwpid = lwp; | |
7453 | ||
b4db1224 | 7454 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7455 | { |
7456 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7457 | find this note before any of the others, which is fine, | |
7458 | since the kernel writes this note out first when it | |
7459 | creates a core file. */ | |
47d9a591 | 7460 | |
50b2bdb7 AM |
7461 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7462 | } | |
7463 | ||
b4db1224 JT |
7464 | /* As of Jan 2002 there are no other machine-independent notes |
7465 | defined for NetBSD core files. If the note type is less | |
7466 | than the start of the machine-dependent note types, we don't | |
7467 | understand it. */ | |
47d9a591 | 7468 | |
b4db1224 | 7469 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7470 | return TRUE; |
50b2bdb7 AM |
7471 | |
7472 | ||
7473 | switch (bfd_get_arch (abfd)) | |
7474 | { | |
7475 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7476 | PT_GETFPREGS == mach+2. */ | |
7477 | ||
7478 | case bfd_arch_alpha: | |
7479 | case bfd_arch_sparc: | |
7480 | switch (note->type) | |
7481 | { | |
b4db1224 | 7482 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7483 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7484 | ||
b4db1224 | 7485 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7486 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7487 | ||
7488 | default: | |
b34976b6 | 7489 | return TRUE; |
50b2bdb7 AM |
7490 | } |
7491 | ||
7492 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7493 | PT_GETFPREGS == mach+3. */ | |
7494 | ||
7495 | default: | |
7496 | switch (note->type) | |
7497 | { | |
b4db1224 | 7498 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7499 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7500 | ||
b4db1224 | 7501 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7502 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7503 | ||
7504 | default: | |
b34976b6 | 7505 | return TRUE; |
50b2bdb7 AM |
7506 | } |
7507 | } | |
7508 | /* NOTREACHED */ | |
7509 | } | |
7510 | ||
07c6e936 | 7511 | static bfd_boolean |
217aa764 | 7512 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7513 | { |
7514 | void *ddata = note->descdata; | |
7515 | char buf[100]; | |
7516 | char *name; | |
7517 | asection *sect; | |
f8843e87 AM |
7518 | short sig; |
7519 | unsigned flags; | |
07c6e936 NC |
7520 | |
7521 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7522 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7523 | ||
f8843e87 AM |
7524 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7525 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7526 | ||
7527 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7528 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7529 | |
7530 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7531 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7532 | { | |
7533 | elf_tdata (abfd)->core_signal = sig; | |
7534 | elf_tdata (abfd)->core_lwpid = *tid; | |
7535 | } | |
07c6e936 | 7536 | |
f8843e87 AM |
7537 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7538 | do not come from signals so we make sure we set the current | |
7539 | thread just in case. */ | |
7540 | if (flags & 0x00000080) | |
7541 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7542 | |
7543 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7544 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7545 | |
217aa764 | 7546 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7547 | if (name == NULL) |
7548 | return FALSE; | |
7549 | strcpy (name, buf); | |
7550 | ||
62f3bb11 | 7551 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7552 | if (sect == NULL) |
7553 | return FALSE; | |
7554 | ||
eea6121a | 7555 | sect->size = note->descsz; |
07c6e936 NC |
7556 | sect->filepos = note->descpos; |
7557 | sect->flags = SEC_HAS_CONTENTS; | |
7558 | sect->alignment_power = 2; | |
7559 | ||
7560 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7561 | } | |
7562 | ||
7563 | static bfd_boolean | |
d69f560c KW |
7564 | elfcore_grok_nto_regs (bfd *abfd, |
7565 | Elf_Internal_Note *note, | |
7566 | pid_t tid, | |
7567 | char *base) | |
07c6e936 NC |
7568 | { |
7569 | char buf[100]; | |
7570 | char *name; | |
7571 | asection *sect; | |
7572 | ||
d69f560c | 7573 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7574 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7575 | |
217aa764 | 7576 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7577 | if (name == NULL) |
7578 | return FALSE; | |
7579 | strcpy (name, buf); | |
7580 | ||
62f3bb11 | 7581 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7582 | if (sect == NULL) |
7583 | return FALSE; | |
7584 | ||
eea6121a | 7585 | sect->size = note->descsz; |
07c6e936 NC |
7586 | sect->filepos = note->descpos; |
7587 | sect->flags = SEC_HAS_CONTENTS; | |
7588 | sect->alignment_power = 2; | |
7589 | ||
f8843e87 AM |
7590 | /* This is the current thread. */ |
7591 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7592 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7593 | |
7594 | return TRUE; | |
07c6e936 NC |
7595 | } |
7596 | ||
7597 | #define BFD_QNT_CORE_INFO 7 | |
7598 | #define BFD_QNT_CORE_STATUS 8 | |
7599 | #define BFD_QNT_CORE_GREG 9 | |
7600 | #define BFD_QNT_CORE_FPREG 10 | |
7601 | ||
7602 | static bfd_boolean | |
217aa764 | 7603 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7604 | { |
7605 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7606 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7607 | function. */ |
7608 | static pid_t tid = 1; | |
7609 | ||
7610 | switch (note->type) | |
7611 | { | |
d69f560c KW |
7612 | case BFD_QNT_CORE_INFO: |
7613 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7614 | case BFD_QNT_CORE_STATUS: | |
7615 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7616 | case BFD_QNT_CORE_GREG: | |
7617 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7618 | case BFD_QNT_CORE_FPREG: | |
7619 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7620 | default: | |
7621 | return TRUE; | |
07c6e936 NC |
7622 | } |
7623 | } | |
7624 | ||
7c76fa91 MS |
7625 | /* Function: elfcore_write_note |
7626 | ||
47d9a591 | 7627 | Inputs: |
7c76fa91 MS |
7628 | buffer to hold note |
7629 | name of note | |
7630 | type of note | |
7631 | data for note | |
7632 | size of data for note | |
7633 | ||
7634 | Return: | |
7635 | End of buffer containing note. */ | |
7636 | ||
7637 | char * | |
217aa764 AM |
7638 | elfcore_write_note (bfd *abfd, |
7639 | char *buf, | |
7640 | int *bufsiz, | |
7641 | const char *name, | |
7642 | int type, | |
7643 | const void *input, | |
7644 | int size) | |
7c76fa91 MS |
7645 | { |
7646 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7647 | size_t namesz; |
7648 | size_t pad; | |
7649 | size_t newspace; | |
7c76fa91 MS |
7650 | char *p, *dest; |
7651 | ||
d4c88bbb AM |
7652 | namesz = 0; |
7653 | pad = 0; | |
7654 | if (name != NULL) | |
7655 | { | |
9c5bfbb7 | 7656 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7657 | |
7658 | namesz = strlen (name) + 1; | |
7659 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7660 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7661 | } |
7662 | ||
5de3bf90 | 7663 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7664 | |
7c76fa91 MS |
7665 | p = realloc (buf, *bufsiz + newspace); |
7666 | dest = p + *bufsiz; | |
7667 | *bufsiz += newspace; | |
7668 | xnp = (Elf_External_Note *) dest; | |
7669 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7670 | H_PUT_32 (abfd, size, xnp->descsz); | |
7671 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7672 | dest = xnp->name; |
7673 | if (name != NULL) | |
7674 | { | |
7675 | memcpy (dest, name, namesz); | |
7676 | dest += namesz; | |
7677 | while (pad != 0) | |
7678 | { | |
7679 | *dest++ = '\0'; | |
7680 | --pad; | |
7681 | } | |
7682 | } | |
7683 | memcpy (dest, input, size); | |
7c76fa91 MS |
7684 | return p; |
7685 | } | |
7686 | ||
7687 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7688 | char * | |
217aa764 AM |
7689 | elfcore_write_prpsinfo (bfd *abfd, |
7690 | char *buf, | |
7691 | int *bufsiz, | |
7692 | const char *fname, | |
7693 | const char *psargs) | |
7c76fa91 MS |
7694 | { |
7695 | int note_type; | |
7696 | char *note_name = "CORE"; | |
7697 | ||
7698 | #if defined (HAVE_PSINFO_T) | |
7699 | psinfo_t data; | |
7700 | note_type = NT_PSINFO; | |
7701 | #else | |
7702 | prpsinfo_t data; | |
7703 | note_type = NT_PRPSINFO; | |
7704 | #endif | |
7705 | ||
7706 | memset (&data, 0, sizeof (data)); | |
7707 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7708 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7709 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7710 | note_name, note_type, &data, sizeof (data)); |
7711 | } | |
7712 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7713 | ||
7714 | #if defined (HAVE_PRSTATUS_T) | |
7715 | char * | |
217aa764 AM |
7716 | elfcore_write_prstatus (bfd *abfd, |
7717 | char *buf, | |
7718 | int *bufsiz, | |
7719 | long pid, | |
7720 | int cursig, | |
7721 | const void *gregs) | |
7c76fa91 MS |
7722 | { |
7723 | prstatus_t prstat; | |
7724 | char *note_name = "CORE"; | |
7725 | ||
7726 | memset (&prstat, 0, sizeof (prstat)); | |
7727 | prstat.pr_pid = pid; | |
7728 | prstat.pr_cursig = cursig; | |
c106e334 | 7729 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7730 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7731 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7732 | } | |
7733 | #endif /* HAVE_PRSTATUS_T */ | |
7734 | ||
51316059 MS |
7735 | #if defined (HAVE_LWPSTATUS_T) |
7736 | char * | |
217aa764 AM |
7737 | elfcore_write_lwpstatus (bfd *abfd, |
7738 | char *buf, | |
7739 | int *bufsiz, | |
7740 | long pid, | |
7741 | int cursig, | |
7742 | const void *gregs) | |
51316059 MS |
7743 | { |
7744 | lwpstatus_t lwpstat; | |
7745 | char *note_name = "CORE"; | |
7746 | ||
7747 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7748 | lwpstat.pr_lwpid = pid >> 16; | |
7749 | lwpstat.pr_cursig = cursig; | |
7750 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7751 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7752 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7753 | #if !defined(gregs) | |
7754 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7755 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7756 | #else | |
7757 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7758 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7759 | #endif | |
7760 | #endif | |
47d9a591 | 7761 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7762 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7763 | } | |
7764 | #endif /* HAVE_LWPSTATUS_T */ | |
7765 | ||
7c76fa91 MS |
7766 | #if defined (HAVE_PSTATUS_T) |
7767 | char * | |
217aa764 AM |
7768 | elfcore_write_pstatus (bfd *abfd, |
7769 | char *buf, | |
7770 | int *bufsiz, | |
7771 | long pid, | |
7772 | int cursig, | |
7773 | const void *gregs) | |
7c76fa91 MS |
7774 | { |
7775 | pstatus_t pstat; | |
7776 | char *note_name = "CORE"; | |
7777 | ||
51316059 MS |
7778 | memset (&pstat, 0, sizeof (pstat)); |
7779 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7780 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7781 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7782 | return buf; | |
7c76fa91 MS |
7783 | } |
7784 | #endif /* HAVE_PSTATUS_T */ | |
7785 | ||
7786 | char * | |
217aa764 AM |
7787 | elfcore_write_prfpreg (bfd *abfd, |
7788 | char *buf, | |
7789 | int *bufsiz, | |
7790 | const void *fpregs, | |
7791 | int size) | |
7c76fa91 MS |
7792 | { |
7793 | char *note_name = "CORE"; | |
47d9a591 | 7794 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7795 | note_name, NT_FPREGSET, fpregs, size); |
7796 | } | |
7797 | ||
7798 | char * | |
217aa764 AM |
7799 | elfcore_write_prxfpreg (bfd *abfd, |
7800 | char *buf, | |
7801 | int *bufsiz, | |
7802 | const void *xfpregs, | |
7803 | int size) | |
7c76fa91 MS |
7804 | { |
7805 | char *note_name = "LINUX"; | |
47d9a591 | 7806 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7807 | note_name, NT_PRXFPREG, xfpregs, size); |
7808 | } | |
7809 | ||
b34976b6 | 7810 | static bfd_boolean |
217aa764 | 7811 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7812 | { |
c044fabd KH |
7813 | char *buf; |
7814 | char *p; | |
252b5132 RH |
7815 | |
7816 | if (size <= 0) | |
b34976b6 | 7817 | return TRUE; |
252b5132 | 7818 | |
dc810e39 | 7819 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7820 | return FALSE; |
252b5132 | 7821 | |
dc810e39 | 7822 | buf = bfd_malloc (size); |
252b5132 | 7823 | if (buf == NULL) |
b34976b6 | 7824 | return FALSE; |
252b5132 | 7825 | |
dc810e39 | 7826 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7827 | { |
7828 | error: | |
7829 | free (buf); | |
b34976b6 | 7830 | return FALSE; |
252b5132 RH |
7831 | } |
7832 | ||
7833 | p = buf; | |
7834 | while (p < buf + size) | |
7835 | { | |
c044fabd KH |
7836 | /* FIXME: bad alignment assumption. */ |
7837 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7838 | Elf_Internal_Note in; |
7839 | ||
dc810e39 | 7840 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7841 | |
dc810e39 | 7842 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7843 | in.namedata = xnp->name; |
7844 | ||
dc810e39 | 7845 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7846 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7847 | in.descpos = offset + (in.descdata - buf); | |
7848 | ||
50b2bdb7 AM |
7849 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7850 | { | |
7851 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7852 | goto error; | |
7853 | } | |
07c6e936 NC |
7854 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7855 | { | |
7856 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7857 | goto error; | |
7858 | } | |
50b2bdb7 AM |
7859 | else |
7860 | { | |
7861 | if (! elfcore_grok_note (abfd, &in)) | |
7862 | goto error; | |
7863 | } | |
252b5132 RH |
7864 | |
7865 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7866 | } | |
7867 | ||
7868 | free (buf); | |
b34976b6 | 7869 | return TRUE; |
252b5132 | 7870 | } |
98d8431c JB |
7871 | \f |
7872 | /* Providing external access to the ELF program header table. */ | |
7873 | ||
7874 | /* Return an upper bound on the number of bytes required to store a | |
7875 | copy of ABFD's program header table entries. Return -1 if an error | |
7876 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7877 | |
98d8431c | 7878 | long |
217aa764 | 7879 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7880 | { |
7881 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7882 | { | |
7883 | bfd_set_error (bfd_error_wrong_format); | |
7884 | return -1; | |
7885 | } | |
7886 | ||
936e320b | 7887 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7888 | } |
7889 | ||
98d8431c JB |
7890 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7891 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7892 | defined in include/elf/internal.h. To find out how large the | |
7893 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7894 | ||
7895 | Return the number of program header table entries read, or -1 if an | |
7896 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7897 | |
98d8431c | 7898 | int |
217aa764 | 7899 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7900 | { |
7901 | int num_phdrs; | |
7902 | ||
7903 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7904 | { | |
7905 | bfd_set_error (bfd_error_wrong_format); | |
7906 | return -1; | |
7907 | } | |
7908 | ||
7909 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7910 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7911 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7912 | ||
7913 | return num_phdrs; | |
7914 | } | |
ae4221d7 L |
7915 | |
7916 | void | |
217aa764 | 7917 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 7918 | { |
d3b05f8d | 7919 | #ifdef BFD64 |
ae4221d7 L |
7920 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7921 | ||
7922 | i_ehdrp = elf_elfheader (abfd); | |
7923 | if (i_ehdrp == NULL) | |
7924 | sprintf_vma (buf, value); | |
7925 | else | |
7926 | { | |
7927 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7928 | { |
ae4221d7 | 7929 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7930 | sprintf (buf, "%016lx", value); |
ae4221d7 | 7931 | #else |
cc55aec9 AM |
7932 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
7933 | _bfd_int64_low (value)); | |
ae4221d7 | 7934 | #endif |
cc55aec9 | 7935 | } |
ae4221d7 L |
7936 | else |
7937 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
7938 | } | |
d3b05f8d L |
7939 | #else |
7940 | sprintf_vma (buf, value); | |
7941 | #endif | |
ae4221d7 L |
7942 | } |
7943 | ||
7944 | void | |
217aa764 | 7945 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 7946 | { |
d3b05f8d | 7947 | #ifdef BFD64 |
ae4221d7 L |
7948 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7949 | ||
7950 | i_ehdrp = elf_elfheader (abfd); | |
7951 | if (i_ehdrp == NULL) | |
7952 | fprintf_vma ((FILE *) stream, value); | |
7953 | else | |
7954 | { | |
7955 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7956 | { |
ae4221d7 | 7957 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7958 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 7959 | #else |
cc55aec9 AM |
7960 | fprintf ((FILE *) stream, "%08lx%08lx", |
7961 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 7962 | #endif |
cc55aec9 | 7963 | } |
ae4221d7 L |
7964 | else |
7965 | fprintf ((FILE *) stream, "%08lx", | |
7966 | (unsigned long) (value & 0xffffffff)); | |
7967 | } | |
d3b05f8d L |
7968 | #else |
7969 | fprintf_vma ((FILE *) stream, value); | |
7970 | #endif | |
ae4221d7 | 7971 | } |
db6751f2 JJ |
7972 | |
7973 | enum elf_reloc_type_class | |
217aa764 | 7974 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
7975 | { |
7976 | return reloc_class_normal; | |
7977 | } | |
f8df10f4 | 7978 | |
47d9a591 | 7979 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
7980 | relocation against a local symbol. */ |
7981 | ||
7982 | bfd_vma | |
217aa764 AM |
7983 | _bfd_elf_rela_local_sym (bfd *abfd, |
7984 | Elf_Internal_Sym *sym, | |
8517fae7 | 7985 | asection **psec, |
217aa764 | 7986 | Elf_Internal_Rela *rel) |
f8df10f4 | 7987 | { |
8517fae7 | 7988 | asection *sec = *psec; |
f8df10f4 JJ |
7989 | bfd_vma relocation; |
7990 | ||
7991 | relocation = (sec->output_section->vma | |
7992 | + sec->output_offset | |
7993 | + sym->st_value); | |
7994 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 7995 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 7996 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 7997 | { |
f8df10f4 | 7998 | rel->r_addend = |
8517fae7 | 7999 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8000 | elf_section_data (sec)->sec_info, |
753731ee AM |
8001 | sym->st_value + rel->r_addend); |
8002 | if (sec != *psec) | |
8003 | { | |
8004 | /* If we have changed the section, and our original section is | |
8005 | marked with SEC_EXCLUDE, it means that the original | |
8006 | SEC_MERGE section has been completely subsumed in some | |
8007 | other SEC_MERGE section. In this case, we need to leave | |
8008 | some info around for --emit-relocs. */ | |
8009 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8010 | sec->kept_section = *psec; | |
8011 | sec = *psec; | |
8012 | } | |
8517fae7 AM |
8013 | rel->r_addend -= relocation; |
8014 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8015 | } |
8016 | return relocation; | |
8017 | } | |
c629eae0 JJ |
8018 | |
8019 | bfd_vma | |
217aa764 AM |
8020 | _bfd_elf_rel_local_sym (bfd *abfd, |
8021 | Elf_Internal_Sym *sym, | |
8022 | asection **psec, | |
8023 | bfd_vma addend) | |
47d9a591 | 8024 | { |
c629eae0 JJ |
8025 | asection *sec = *psec; |
8026 | ||
68bfbfcc | 8027 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8028 | return sym->st_value + addend; |
8029 | ||
8030 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8031 | elf_section_data (sec)->sec_info, |
753731ee | 8032 | sym->st_value + addend); |
c629eae0 JJ |
8033 | } |
8034 | ||
8035 | bfd_vma | |
217aa764 | 8036 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8037 | struct bfd_link_info *info, |
217aa764 AM |
8038 | asection *sec, |
8039 | bfd_vma offset) | |
c629eae0 | 8040 | { |
68bfbfcc | 8041 | switch (sec->sec_info_type) |
65765700 JJ |
8042 | { |
8043 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8044 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8045 | offset); | |
65765700 | 8046 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8047 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8048 | default: |
8049 | return offset; | |
8050 | } | |
c629eae0 | 8051 | } |
3333a7c3 RM |
8052 | \f |
8053 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8054 | reconstruct an ELF file by reading the segments out of remote memory | |
8055 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8056 | points to. If not null, *LOADBASEP is filled in with the difference | |
8057 | between the VMAs from which the segments were read, and the VMAs the | |
8058 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8059 | ||
8060 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8061 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8062 | should return zero on success or an `errno' code on failure. TEMPL must | |
8063 | be a BFD for an ELF target with the word size and byte order found in | |
8064 | the remote memory. */ | |
8065 | ||
8066 | bfd * | |
217aa764 AM |
8067 | bfd_elf_bfd_from_remote_memory |
8068 | (bfd *templ, | |
8069 | bfd_vma ehdr_vma, | |
8070 | bfd_vma *loadbasep, | |
f075ee0c | 8071 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8072 | { |
8073 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8074 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8075 | } | |
4c45e5c9 JJ |
8076 | \f |
8077 | long | |
c9727e01 AM |
8078 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8079 | long symcount ATTRIBUTE_UNUSED, | |
8080 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8081 | long dynsymcount, |
c9727e01 AM |
8082 | asymbol **dynsyms, |
8083 | asymbol **ret) | |
4c45e5c9 JJ |
8084 | { |
8085 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8086 | asection *relplt; | |
8087 | asymbol *s; | |
8088 | const char *relplt_name; | |
8089 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8090 | arelent *p; | |
8091 | long count, i, n; | |
8092 | size_t size; | |
8093 | Elf_Internal_Shdr *hdr; | |
8094 | char *names; | |
8095 | asection *plt; | |
8096 | ||
8615f3f2 AM |
8097 | *ret = NULL; |
8098 | ||
90e3cdf2 JJ |
8099 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8100 | return 0; | |
8101 | ||
8615f3f2 AM |
8102 | if (dynsymcount <= 0) |
8103 | return 0; | |
8104 | ||
4c45e5c9 JJ |
8105 | if (!bed->plt_sym_val) |
8106 | return 0; | |
8107 | ||
8108 | relplt_name = bed->relplt_name; | |
8109 | if (relplt_name == NULL) | |
8110 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8111 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8112 | if (relplt == NULL) | |
8113 | return 0; | |
8114 | ||
8115 | hdr = &elf_section_data (relplt)->this_hdr; | |
8116 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8117 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8118 | return 0; | |
8119 | ||
8120 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8121 | if (plt == NULL) | |
8122 | return 0; | |
8123 | ||
8124 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8125 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8126 | return -1; |
8127 | ||
eea6121a | 8128 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8129 | size = count * sizeof (asymbol); |
8130 | p = relplt->relocation; | |
8131 | for (i = 0; i < count; i++, s++, p++) | |
8132 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8133 | ||
8134 | s = *ret = bfd_malloc (size); | |
8135 | if (s == NULL) | |
8136 | return -1; | |
8137 | ||
8138 | names = (char *) (s + count); | |
8139 | p = relplt->relocation; | |
8140 | n = 0; | |
8141 | for (i = 0; i < count; i++, s++, p++) | |
8142 | { | |
8143 | size_t len; | |
8144 | bfd_vma addr; | |
8145 | ||
8146 | addr = bed->plt_sym_val (i, plt, p); | |
8147 | if (addr == (bfd_vma) -1) | |
8148 | continue; | |
8149 | ||
8150 | *s = **p->sym_ptr_ptr; | |
8151 | s->section = plt; | |
8152 | s->value = addr - plt->vma; | |
8153 | s->name = names; | |
8154 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8155 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8156 | names += len; | |
8157 | memcpy (names, "@plt", sizeof ("@plt")); | |
8158 | names += sizeof ("@plt"); | |
8159 | ++n; | |
8160 | } | |
8161 | ||
8162 | return n; | |
8163 | } | |
3d7f7666 L |
8164 | |
8165 | /* Sort symbol by binding and section. We want to put definitions | |
8166 | sorted by section at the beginning. */ | |
8167 | ||
8168 | static int | |
8169 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8170 | { | |
8171 | const Elf_Internal_Sym *s1; | |
8172 | const Elf_Internal_Sym *s2; | |
8173 | int shndx; | |
8174 | ||
8175 | /* Make sure that undefined symbols are at the end. */ | |
8176 | s1 = (const Elf_Internal_Sym *) arg1; | |
8177 | if (s1->st_shndx == SHN_UNDEF) | |
8178 | return 1; | |
8179 | s2 = (const Elf_Internal_Sym *) arg2; | |
8180 | if (s2->st_shndx == SHN_UNDEF) | |
8181 | return -1; | |
8182 | ||
8183 | /* Sorted by section index. */ | |
8184 | shndx = s1->st_shndx - s2->st_shndx; | |
8185 | if (shndx != 0) | |
8186 | return shndx; | |
8187 | ||
8188 | /* Sorted by binding. */ | |
8189 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8190 | } | |
8191 | ||
8192 | struct elf_symbol | |
8193 | { | |
8194 | Elf_Internal_Sym *sym; | |
8195 | const char *name; | |
8196 | }; | |
8197 | ||
8198 | static int | |
8199 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8200 | { | |
8201 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8202 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8203 | return strcmp (s1->name, s2->name); | |
8204 | } | |
8205 | ||
8206 | /* Check if 2 sections define the same set of local and global | |
8207 | symbols. */ | |
8208 | ||
8209 | bfd_boolean | |
8210 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8211 | { | |
8212 | bfd *bfd1, *bfd2; | |
8213 | const struct elf_backend_data *bed1, *bed2; | |
8214 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8215 | bfd_size_type symcount1, symcount2; | |
8216 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8217 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8218 | Elf_Internal_Sym *isymend; | |
8219 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8220 | bfd_size_type count1, count2, i; | |
8221 | int shndx1, shndx2; | |
8222 | bfd_boolean result; | |
8223 | ||
8224 | bfd1 = sec1->owner; | |
8225 | bfd2 = sec2->owner; | |
8226 | ||
8227 | /* If both are .gnu.linkonce sections, they have to have the same | |
8228 | section name. */ | |
8229 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8230 | sizeof ".gnu.linkonce" - 1) == 0 | |
8231 | && strncmp (sec2->name, ".gnu.linkonce", | |
8232 | sizeof ".gnu.linkonce" - 1) == 0) | |
8233 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8234 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8235 | ||
8236 | /* Both sections have to be in ELF. */ | |
8237 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8238 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8239 | return FALSE; | |
8240 | ||
8241 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8242 | return FALSE; | |
8243 | ||
8244 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8245 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8246 | { | |
8247 | /* If both are members of section groups, they have to have the | |
8248 | same group name. */ | |
8249 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8250 | return FALSE; | |
8251 | } | |
8252 | ||
8253 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8254 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8255 | if (shndx1 == -1 || shndx2 == -1) | |
8256 | return FALSE; | |
8257 | ||
8258 | bed1 = get_elf_backend_data (bfd1); | |
8259 | bed2 = get_elf_backend_data (bfd2); | |
8260 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8261 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8262 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8263 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8264 | ||
8265 | if (symcount1 == 0 || symcount2 == 0) | |
8266 | return FALSE; | |
8267 | ||
8268 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8269 | NULL, NULL, NULL); | |
8270 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8271 | NULL, NULL, NULL); | |
8272 | ||
8273 | result = FALSE; | |
8274 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8275 | goto done; | |
8276 | ||
8277 | /* Sort symbols by binding and section. Global definitions are at | |
8278 | the beginning. */ | |
8279 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8280 | elf_sort_elf_symbol); | |
8281 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8282 | elf_sort_elf_symbol); | |
8283 | ||
8284 | /* Count definitions in the section. */ | |
8285 | count1 = 0; | |
8286 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8287 | isym < isymend; isym++) | |
8288 | { | |
8289 | if (isym->st_shndx == (unsigned int) shndx1) | |
8290 | { | |
8291 | if (count1 == 0) | |
8292 | isymstart1 = isym; | |
8293 | count1++; | |
8294 | } | |
8295 | ||
8296 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8297 | break; | |
8298 | } | |
8299 | ||
8300 | count2 = 0; | |
8301 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8302 | isym < isymend; isym++) | |
8303 | { | |
8304 | if (isym->st_shndx == (unsigned int) shndx2) | |
8305 | { | |
8306 | if (count2 == 0) | |
8307 | isymstart2 = isym; | |
8308 | count2++; | |
8309 | } | |
8310 | ||
8311 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8312 | break; | |
8313 | } | |
8314 | ||
8315 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8316 | goto done; | |
8317 | ||
8318 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8319 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8320 | ||
8321 | if (symtable1 == NULL || symtable2 == NULL) | |
8322 | goto done; | |
8323 | ||
8324 | symp = symtable1; | |
8325 | for (isym = isymstart1, isymend = isym + count1; | |
8326 | isym < isymend; isym++) | |
8327 | { | |
8328 | symp->sym = isym; | |
8329 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8330 | hdr1->sh_link, | |
8331 | isym->st_name); | |
8332 | symp++; | |
8333 | } | |
8334 | ||
8335 | symp = symtable2; | |
8336 | for (isym = isymstart2, isymend = isym + count1; | |
8337 | isym < isymend; isym++) | |
8338 | { | |
8339 | symp->sym = isym; | |
8340 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8341 | hdr2->sh_link, | |
8342 | isym->st_name); | |
8343 | symp++; | |
8344 | } | |
8345 | ||
8346 | /* Sort symbol by name. */ | |
8347 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8348 | elf_sym_name_compare); | |
8349 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8350 | elf_sym_name_compare); | |
8351 | ||
8352 | for (i = 0; i < count1; i++) | |
8353 | /* Two symbols must have the same binding, type and name. */ | |
8354 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8355 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8356 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8357 | goto done; | |
8358 | ||
8359 | result = TRUE; | |
8360 | ||
8361 | done: | |
8362 | if (symtable1) | |
8363 | free (symtable1); | |
8364 | if (symtable2) | |
8365 | free (symtable2); | |
8366 | if (isymbuf1) | |
8367 | free (isymbuf1); | |
8368 | if (isymbuf2) | |
8369 | free (isymbuf2); | |
8370 | ||
8371 | return result; | |
8372 | } |