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Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
0e922b77 | 4 | 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 11 | (at your option) any later version. |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
22 | ||
252b5132 | 23 | |
1b74d094 BW |
24 | /* |
25 | SECTION | |
252b5132 RH |
26 | ELF backends |
27 | ||
28 | BFD support for ELF formats is being worked on. | |
29 | Currently, the best supported back ends are for sparc and i386 | |
30 | (running svr4 or Solaris 2). | |
31 | ||
32 | Documentation of the internals of the support code still needs | |
33 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 34 | haven't bothered yet. */ |
252b5132 | 35 | |
7ee38065 MS |
36 | /* For sparc64-cross-sparc32. */ |
37 | #define _SYSCALL32 | |
252b5132 | 38 | #include "sysdep.h" |
3db64b00 | 39 | #include "bfd.h" |
252b5132 RH |
40 | #include "bfdlink.h" |
41 | #include "libbfd.h" | |
42 | #define ARCH_SIZE 0 | |
43 | #include "elf-bfd.h" | |
e0e8c97f | 44 | #include "libiberty.h" |
ff59fc36 | 45 | #include "safe-ctype.h" |
252b5132 | 46 | |
217aa764 | 47 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 48 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
49 | static bfd_boolean prep_headers (bfd *); |
50 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
718175fa JK |
51 | static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ; |
52 | static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size, | |
53 | file_ptr offset); | |
50b2bdb7 | 54 | |
252b5132 RH |
55 | /* Swap version information in and out. The version information is |
56 | currently size independent. If that ever changes, this code will | |
57 | need to move into elfcode.h. */ | |
58 | ||
59 | /* Swap in a Verdef structure. */ | |
60 | ||
61 | void | |
217aa764 AM |
62 | _bfd_elf_swap_verdef_in (bfd *abfd, |
63 | const Elf_External_Verdef *src, | |
64 | Elf_Internal_Verdef *dst) | |
252b5132 | 65 | { |
dc810e39 AM |
66 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
67 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
68 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
69 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
70 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
71 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
72 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
73 | } |
74 | ||
75 | /* Swap out a Verdef structure. */ | |
76 | ||
77 | void | |
217aa764 AM |
78 | _bfd_elf_swap_verdef_out (bfd *abfd, |
79 | const Elf_Internal_Verdef *src, | |
80 | Elf_External_Verdef *dst) | |
252b5132 | 81 | { |
dc810e39 AM |
82 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
83 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
84 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
85 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
86 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
87 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
88 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
89 | } |
90 | ||
91 | /* Swap in a Verdaux structure. */ | |
92 | ||
93 | void | |
217aa764 AM |
94 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
95 | const Elf_External_Verdaux *src, | |
96 | Elf_Internal_Verdaux *dst) | |
252b5132 | 97 | { |
dc810e39 AM |
98 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
99 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
100 | } |
101 | ||
102 | /* Swap out a Verdaux structure. */ | |
103 | ||
104 | void | |
217aa764 AM |
105 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
106 | const Elf_Internal_Verdaux *src, | |
107 | Elf_External_Verdaux *dst) | |
252b5132 | 108 | { |
dc810e39 AM |
109 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
110 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
111 | } |
112 | ||
113 | /* Swap in a Verneed structure. */ | |
114 | ||
115 | void | |
217aa764 AM |
116 | _bfd_elf_swap_verneed_in (bfd *abfd, |
117 | const Elf_External_Verneed *src, | |
118 | Elf_Internal_Verneed *dst) | |
252b5132 | 119 | { |
dc810e39 AM |
120 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
121 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
122 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
123 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
124 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
125 | } |
126 | ||
127 | /* Swap out a Verneed structure. */ | |
128 | ||
129 | void | |
217aa764 AM |
130 | _bfd_elf_swap_verneed_out (bfd *abfd, |
131 | const Elf_Internal_Verneed *src, | |
132 | Elf_External_Verneed *dst) | |
252b5132 | 133 | { |
dc810e39 AM |
134 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
135 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
136 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
137 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
138 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
139 | } |
140 | ||
141 | /* Swap in a Vernaux structure. */ | |
142 | ||
143 | void | |
217aa764 AM |
144 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
145 | const Elf_External_Vernaux *src, | |
146 | Elf_Internal_Vernaux *dst) | |
252b5132 | 147 | { |
dc810e39 AM |
148 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
149 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
150 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
151 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
152 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
153 | } |
154 | ||
155 | /* Swap out a Vernaux structure. */ | |
156 | ||
157 | void | |
217aa764 AM |
158 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
159 | const Elf_Internal_Vernaux *src, | |
160 | Elf_External_Vernaux *dst) | |
252b5132 | 161 | { |
dc810e39 AM |
162 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
163 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
164 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
165 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
166 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
167 | } |
168 | ||
169 | /* Swap in a Versym structure. */ | |
170 | ||
171 | void | |
217aa764 AM |
172 | _bfd_elf_swap_versym_in (bfd *abfd, |
173 | const Elf_External_Versym *src, | |
174 | Elf_Internal_Versym *dst) | |
252b5132 | 175 | { |
dc810e39 | 176 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
177 | } |
178 | ||
179 | /* Swap out a Versym structure. */ | |
180 | ||
181 | void | |
217aa764 AM |
182 | _bfd_elf_swap_versym_out (bfd *abfd, |
183 | const Elf_Internal_Versym *src, | |
184 | Elf_External_Versym *dst) | |
252b5132 | 185 | { |
dc810e39 | 186 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
187 | } |
188 | ||
189 | /* Standard ELF hash function. Do not change this function; you will | |
190 | cause invalid hash tables to be generated. */ | |
3a99b017 | 191 | |
252b5132 | 192 | unsigned long |
217aa764 | 193 | bfd_elf_hash (const char *namearg) |
252b5132 | 194 | { |
3a99b017 | 195 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
196 | unsigned long h = 0; |
197 | unsigned long g; | |
198 | int ch; | |
199 | ||
200 | while ((ch = *name++) != '\0') | |
201 | { | |
202 | h = (h << 4) + ch; | |
203 | if ((g = (h & 0xf0000000)) != 0) | |
204 | { | |
205 | h ^= g >> 24; | |
206 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
207 | this case and on some machines one insn instead of two. */ | |
208 | h ^= g; | |
209 | } | |
210 | } | |
32dfa85d | 211 | return h & 0xffffffff; |
252b5132 RH |
212 | } |
213 | ||
fdc90cb4 JJ |
214 | /* DT_GNU_HASH hash function. Do not change this function; you will |
215 | cause invalid hash tables to be generated. */ | |
216 | ||
217 | unsigned long | |
218 | bfd_elf_gnu_hash (const char *namearg) | |
219 | { | |
220 | const unsigned char *name = (const unsigned char *) namearg; | |
221 | unsigned long h = 5381; | |
222 | unsigned char ch; | |
223 | ||
224 | while ((ch = *name++) != '\0') | |
225 | h = (h << 5) + h + ch; | |
226 | return h & 0xffffffff; | |
227 | } | |
228 | ||
b34976b6 | 229 | bfd_boolean |
217aa764 | 230 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 231 | { |
62d7a5f6 AM |
232 | if (abfd->tdata.any == NULL) |
233 | { | |
234 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); | |
235 | if (abfd->tdata.any == NULL) | |
236 | return FALSE; | |
237 | } | |
238 | ||
239 | elf_tdata (abfd)->program_header_size = (bfd_size_type) -1; | |
252b5132 | 240 | |
b34976b6 | 241 | return TRUE; |
252b5132 RH |
242 | } |
243 | ||
b34976b6 | 244 | bfd_boolean |
217aa764 | 245 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 246 | { |
c044fabd | 247 | /* I think this can be done just like an object file. */ |
252b5132 RH |
248 | return bfd_elf_mkobject (abfd); |
249 | } | |
250 | ||
251 | char * | |
217aa764 | 252 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
253 | { |
254 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 255 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
256 | file_ptr offset; |
257 | bfd_size_type shstrtabsize; | |
252b5132 RH |
258 | |
259 | i_shdrp = elf_elfsections (abfd); | |
74f2e02b AM |
260 | if (i_shdrp == 0 |
261 | || shindex >= elf_numsections (abfd) | |
262 | || i_shdrp[shindex] == 0) | |
f075ee0c | 263 | return NULL; |
252b5132 | 264 | |
f075ee0c | 265 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
266 | if (shstrtab == NULL) |
267 | { | |
c044fabd | 268 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
269 | offset = i_shdrp[shindex]->sh_offset; |
270 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
c6c60d09 JJ |
271 | |
272 | /* Allocate and clear an extra byte at the end, to prevent crashes | |
273 | in case the string table is not terminated. */ | |
274 | if (shstrtabsize + 1 == 0 | |
275 | || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL | |
276 | || bfd_seek (abfd, offset, SEEK_SET) != 0) | |
277 | shstrtab = NULL; | |
278 | else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize) | |
279 | { | |
280 | if (bfd_get_error () != bfd_error_system_call) | |
281 | bfd_set_error (bfd_error_file_truncated); | |
282 | shstrtab = NULL; | |
283 | } | |
284 | else | |
285 | shstrtab[shstrtabsize] = '\0'; | |
217aa764 | 286 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 287 | } |
f075ee0c | 288 | return (char *) shstrtab; |
252b5132 RH |
289 | } |
290 | ||
291 | char * | |
217aa764 AM |
292 | bfd_elf_string_from_elf_section (bfd *abfd, |
293 | unsigned int shindex, | |
294 | unsigned int strindex) | |
252b5132 RH |
295 | { |
296 | Elf_Internal_Shdr *hdr; | |
297 | ||
298 | if (strindex == 0) | |
299 | return ""; | |
300 | ||
74f2e02b AM |
301 | if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd)) |
302 | return NULL; | |
303 | ||
252b5132 RH |
304 | hdr = elf_elfsections (abfd)[shindex]; |
305 | ||
306 | if (hdr->contents == NULL | |
307 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
308 | return NULL; | |
309 | ||
310 | if (strindex >= hdr->sh_size) | |
311 | { | |
1b3a8575 | 312 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 313 | (*_bfd_error_handler) |
d003868e AM |
314 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
315 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 316 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 317 | ? ".shstrtab" |
1b3a8575 | 318 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
319 | return ""; |
320 | } | |
321 | ||
322 | return ((char *) hdr->contents) + strindex; | |
323 | } | |
324 | ||
6cdc0ccc AM |
325 | /* Read and convert symbols to internal format. |
326 | SYMCOUNT specifies the number of symbols to read, starting from | |
327 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
328 | are non-NULL, they are used to store the internal symbols, external | |
329 | symbols, and symbol section index extensions, respectively. */ | |
330 | ||
331 | Elf_Internal_Sym * | |
217aa764 AM |
332 | bfd_elf_get_elf_syms (bfd *ibfd, |
333 | Elf_Internal_Shdr *symtab_hdr, | |
334 | size_t symcount, | |
335 | size_t symoffset, | |
336 | Elf_Internal_Sym *intsym_buf, | |
337 | void *extsym_buf, | |
338 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
339 | { |
340 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 341 | void *alloc_ext; |
df622259 | 342 | const bfd_byte *esym; |
6cdc0ccc AM |
343 | Elf_External_Sym_Shndx *alloc_extshndx; |
344 | Elf_External_Sym_Shndx *shndx; | |
345 | Elf_Internal_Sym *isym; | |
346 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 347 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
348 | size_t extsym_size; |
349 | bfd_size_type amt; | |
350 | file_ptr pos; | |
351 | ||
352 | if (symcount == 0) | |
353 | return intsym_buf; | |
354 | ||
355 | /* Normal syms might have section extension entries. */ | |
356 | shndx_hdr = NULL; | |
357 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
358 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
359 | ||
360 | /* Read the symbols. */ | |
361 | alloc_ext = NULL; | |
362 | alloc_extshndx = NULL; | |
363 | bed = get_elf_backend_data (ibfd); | |
364 | extsym_size = bed->s->sizeof_sym; | |
365 | amt = symcount * extsym_size; | |
366 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
367 | if (extsym_buf == NULL) | |
368 | { | |
d0fb9a8d | 369 | alloc_ext = bfd_malloc2 (symcount, extsym_size); |
6cdc0ccc AM |
370 | extsym_buf = alloc_ext; |
371 | } | |
372 | if (extsym_buf == NULL | |
373 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
374 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
375 | { | |
376 | intsym_buf = NULL; | |
377 | goto out; | |
378 | } | |
379 | ||
380 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
381 | extshndx_buf = NULL; | |
382 | else | |
383 | { | |
384 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
385 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
386 | if (extshndx_buf == NULL) | |
387 | { | |
d0fb9a8d JJ |
388 | alloc_extshndx = bfd_malloc2 (symcount, |
389 | sizeof (Elf_External_Sym_Shndx)); | |
6cdc0ccc AM |
390 | extshndx_buf = alloc_extshndx; |
391 | } | |
392 | if (extshndx_buf == NULL | |
393 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
394 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
395 | { | |
396 | intsym_buf = NULL; | |
397 | goto out; | |
398 | } | |
399 | } | |
400 | ||
401 | if (intsym_buf == NULL) | |
402 | { | |
d0fb9a8d | 403 | intsym_buf = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym)); |
6cdc0ccc AM |
404 | if (intsym_buf == NULL) |
405 | goto out; | |
406 | } | |
407 | ||
408 | /* Convert the symbols to internal form. */ | |
409 | isymend = intsym_buf + symcount; | |
410 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
411 | isym < isymend; | |
412 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
8384fb8f AM |
413 | if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym)) |
414 | { | |
415 | symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size; | |
416 | (*_bfd_error_handler) (_("%B symbol number %lu references " | |
417 | "nonexistent SHT_SYMTAB_SHNDX section"), | |
418 | ibfd, (unsigned long) symoffset); | |
419 | intsym_buf = NULL; | |
420 | goto out; | |
421 | } | |
6cdc0ccc AM |
422 | |
423 | out: | |
424 | if (alloc_ext != NULL) | |
425 | free (alloc_ext); | |
426 | if (alloc_extshndx != NULL) | |
427 | free (alloc_extshndx); | |
428 | ||
429 | return intsym_buf; | |
430 | } | |
431 | ||
5cab59f6 AM |
432 | /* Look up a symbol name. */ |
433 | const char * | |
be8dd2ca AM |
434 | bfd_elf_sym_name (bfd *abfd, |
435 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
436 | Elf_Internal_Sym *isym, |
437 | asection *sym_sec) | |
5cab59f6 | 438 | { |
26c61ae5 | 439 | const char *name; |
5cab59f6 | 440 | unsigned int iname = isym->st_name; |
be8dd2ca | 441 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 442 | |
138f35cc JJ |
443 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
444 | /* Check for a bogus st_shndx to avoid crashing. */ | |
445 | && isym->st_shndx < elf_numsections (abfd) | |
446 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
447 | { |
448 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
449 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
450 | } | |
451 | ||
26c61ae5 L |
452 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
453 | if (name == NULL) | |
454 | name = "(null)"; | |
455 | else if (sym_sec && *name == '\0') | |
456 | name = bfd_section_name (abfd, sym_sec); | |
457 | ||
458 | return name; | |
5cab59f6 AM |
459 | } |
460 | ||
dbb410c3 AM |
461 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
462 | sections. The first element is the flags, the rest are section | |
463 | pointers. */ | |
464 | ||
465 | typedef union elf_internal_group { | |
466 | Elf_Internal_Shdr *shdr; | |
467 | unsigned int flags; | |
468 | } Elf_Internal_Group; | |
469 | ||
b885599b AM |
470 | /* Return the name of the group signature symbol. Why isn't the |
471 | signature just a string? */ | |
472 | ||
473 | static const char * | |
217aa764 | 474 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 475 | { |
9dce4196 | 476 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
477 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
478 | Elf_External_Sym_Shndx eshndx; | |
479 | Elf_Internal_Sym isym; | |
b885599b | 480 | |
13792e9d L |
481 | /* First we need to ensure the symbol table is available. Make sure |
482 | that it is a symbol table section. */ | |
483 | hdr = elf_elfsections (abfd) [ghdr->sh_link]; | |
484 | if (hdr->sh_type != SHT_SYMTAB | |
485 | || ! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
b885599b AM |
486 | return NULL; |
487 | ||
9dce4196 AM |
488 | /* Go read the symbol. */ |
489 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
490 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
491 | &isym, esym, &eshndx) == NULL) | |
b885599b | 492 | return NULL; |
9dce4196 | 493 | |
26c61ae5 | 494 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
495 | } |
496 | ||
dbb410c3 AM |
497 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
498 | ||
b34976b6 | 499 | static bfd_boolean |
217aa764 | 500 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
501 | { |
502 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
503 | ||
504 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
505 | is set to -1 if there are no SHT_GROUP sections. */ | |
506 | if (num_group == 0) | |
507 | { | |
508 | unsigned int i, shnum; | |
509 | ||
510 | /* First count the number of groups. If we have a SHT_GROUP | |
511 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 512 | shnum = elf_numsections (abfd); |
dbb410c3 | 513 | num_group = 0; |
08a40648 | 514 | |
1783205a NC |
515 | #define IS_VALID_GROUP_SECTION_HEADER(shdr) \ |
516 | ( (shdr)->sh_type == SHT_GROUP \ | |
517 | && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \ | |
518 | && (shdr)->sh_entsize == GRP_ENTRY_SIZE \ | |
519 | && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0) | |
08a40648 | 520 | |
dbb410c3 AM |
521 | for (i = 0; i < shnum; i++) |
522 | { | |
523 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
524 | |
525 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 AM |
526 | num_group += 1; |
527 | } | |
528 | ||
529 | if (num_group == 0) | |
20dbb49d L |
530 | { |
531 | num_group = (unsigned) -1; | |
532 | elf_tdata (abfd)->num_group = num_group; | |
533 | } | |
534 | else | |
dbb410c3 AM |
535 | { |
536 | /* We keep a list of elf section headers for group sections, | |
537 | so we can find them quickly. */ | |
20dbb49d | 538 | bfd_size_type amt; |
d0fb9a8d | 539 | |
20dbb49d | 540 | elf_tdata (abfd)->num_group = num_group; |
d0fb9a8d JJ |
541 | elf_tdata (abfd)->group_sect_ptr |
542 | = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *)); | |
dbb410c3 | 543 | if (elf_tdata (abfd)->group_sect_ptr == NULL) |
b34976b6 | 544 | return FALSE; |
dbb410c3 AM |
545 | |
546 | num_group = 0; | |
547 | for (i = 0; i < shnum; i++) | |
548 | { | |
549 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
1783205a NC |
550 | |
551 | if (IS_VALID_GROUP_SECTION_HEADER (shdr)) | |
dbb410c3 | 552 | { |
973ffd63 | 553 | unsigned char *src; |
dbb410c3 AM |
554 | Elf_Internal_Group *dest; |
555 | ||
556 | /* Add to list of sections. */ | |
557 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
558 | num_group += 1; | |
559 | ||
560 | /* Read the raw contents. */ | |
561 | BFD_ASSERT (sizeof (*dest) >= 4); | |
562 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
d0fb9a8d JJ |
563 | shdr->contents = bfd_alloc2 (abfd, shdr->sh_size, |
564 | sizeof (*dest) / 4); | |
1783205a NC |
565 | /* PR binutils/4110: Handle corrupt group headers. */ |
566 | if (shdr->contents == NULL) | |
567 | { | |
568 | _bfd_error_handler | |
569 | (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size); | |
570 | bfd_set_error (bfd_error_bad_value); | |
571 | return FALSE; | |
572 | } | |
573 | ||
574 | memset (shdr->contents, 0, amt); | |
575 | ||
576 | if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
dbb410c3 AM |
577 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) |
578 | != shdr->sh_size)) | |
b34976b6 | 579 | return FALSE; |
dbb410c3 AM |
580 | |
581 | /* Translate raw contents, a flag word followed by an | |
582 | array of elf section indices all in target byte order, | |
583 | to the flag word followed by an array of elf section | |
584 | pointers. */ | |
585 | src = shdr->contents + shdr->sh_size; | |
586 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
587 | while (1) | |
588 | { | |
589 | unsigned int idx; | |
590 | ||
591 | src -= 4; | |
592 | --dest; | |
593 | idx = H_GET_32 (abfd, src); | |
594 | if (src == shdr->contents) | |
595 | { | |
596 | dest->flags = idx; | |
b885599b AM |
597 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
598 | shdr->bfd_section->flags | |
599 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
600 | break; |
601 | } | |
602 | if (idx >= shnum) | |
603 | { | |
604 | ((*_bfd_error_handler) | |
d003868e | 605 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
606 | idx = 0; |
607 | } | |
608 | dest->shdr = elf_elfsections (abfd)[idx]; | |
609 | } | |
610 | } | |
611 | } | |
612 | } | |
613 | } | |
614 | ||
615 | if (num_group != (unsigned) -1) | |
616 | { | |
617 | unsigned int i; | |
618 | ||
619 | for (i = 0; i < num_group; i++) | |
620 | { | |
621 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
622 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
623 | unsigned int n_elt = shdr->sh_size / 4; | |
624 | ||
625 | /* Look through this group's sections to see if current | |
626 | section is a member. */ | |
627 | while (--n_elt != 0) | |
628 | if ((++idx)->shdr == hdr) | |
629 | { | |
e0e8c97f | 630 | asection *s = NULL; |
dbb410c3 AM |
631 | |
632 | /* We are a member of this group. Go looking through | |
633 | other members to see if any others are linked via | |
634 | next_in_group. */ | |
635 | idx = (Elf_Internal_Group *) shdr->contents; | |
636 | n_elt = shdr->sh_size / 4; | |
637 | while (--n_elt != 0) | |
638 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 639 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
640 | break; |
641 | if (n_elt != 0) | |
642 | { | |
dbb410c3 AM |
643 | /* Snarf the group name from other member, and |
644 | insert current section in circular list. */ | |
945906ff AM |
645 | elf_group_name (newsect) = elf_group_name (s); |
646 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
647 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
648 | } |
649 | else | |
650 | { | |
dbb410c3 AM |
651 | const char *gname; |
652 | ||
b885599b AM |
653 | gname = group_signature (abfd, shdr); |
654 | if (gname == NULL) | |
b34976b6 | 655 | return FALSE; |
945906ff | 656 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
657 | |
658 | /* Start a circular list with one element. */ | |
945906ff | 659 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 660 | } |
b885599b | 661 | |
9dce4196 AM |
662 | /* If the group section has been created, point to the |
663 | new member. */ | |
dbb410c3 | 664 | if (shdr->bfd_section != NULL) |
945906ff | 665 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 666 | |
dbb410c3 AM |
667 | i = num_group - 1; |
668 | break; | |
669 | } | |
670 | } | |
671 | } | |
672 | ||
945906ff | 673 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 674 | { |
d003868e AM |
675 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
676 | abfd, newsect); | |
dbb410c3 | 677 | } |
b34976b6 | 678 | return TRUE; |
dbb410c3 AM |
679 | } |
680 | ||
3d7f7666 | 681 | bfd_boolean |
dd863624 | 682 | _bfd_elf_setup_sections (bfd *abfd) |
3d7f7666 L |
683 | { |
684 | unsigned int i; | |
685 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
686 | bfd_boolean result = TRUE; | |
dd863624 L |
687 | asection *s; |
688 | ||
689 | /* Process SHF_LINK_ORDER. */ | |
690 | for (s = abfd->sections; s != NULL; s = s->next) | |
691 | { | |
692 | Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr; | |
693 | if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0) | |
694 | { | |
695 | unsigned int elfsec = this_hdr->sh_link; | |
696 | /* FIXME: The old Intel compiler and old strip/objcopy may | |
697 | not set the sh_link or sh_info fields. Hence we could | |
698 | get the situation where elfsec is 0. */ | |
699 | if (elfsec == 0) | |
700 | { | |
701 | const struct elf_backend_data *bed | |
702 | = get_elf_backend_data (abfd); | |
703 | if (bed->link_order_error_handler) | |
704 | bed->link_order_error_handler | |
705 | (_("%B: warning: sh_link not set for section `%A'"), | |
706 | abfd, s); | |
707 | } | |
708 | else | |
709 | { | |
25bbc984 L |
710 | asection *link; |
711 | ||
dd863624 | 712 | this_hdr = elf_elfsections (abfd)[elfsec]; |
25bbc984 L |
713 | |
714 | /* PR 1991, 2008: | |
715 | Some strip/objcopy may leave an incorrect value in | |
716 | sh_link. We don't want to proceed. */ | |
717 | link = this_hdr->bfd_section; | |
718 | if (link == NULL) | |
719 | { | |
720 | (*_bfd_error_handler) | |
721 | (_("%B: sh_link [%d] in section `%A' is incorrect"), | |
722 | s->owner, s, elfsec); | |
723 | result = FALSE; | |
724 | } | |
725 | ||
726 | elf_linked_to_section (s) = link; | |
dd863624 L |
727 | } |
728 | } | |
729 | } | |
3d7f7666 | 730 | |
dd863624 | 731 | /* Process section groups. */ |
3d7f7666 L |
732 | if (num_group == (unsigned) -1) |
733 | return result; | |
734 | ||
735 | for (i = 0; i < num_group; i++) | |
736 | { | |
737 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
738 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
739 | unsigned int n_elt = shdr->sh_size / 4; | |
740 | ||
741 | while (--n_elt != 0) | |
742 | if ((++idx)->shdr->bfd_section) | |
743 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
744 | else if (idx->shdr->sh_type == SHT_RELA | |
745 | || idx->shdr->sh_type == SHT_REL) | |
746 | /* We won't include relocation sections in section groups in | |
747 | output object files. We adjust the group section size here | |
748 | so that relocatable link will work correctly when | |
749 | relocation sections are in section group in input object | |
750 | files. */ | |
751 | shdr->bfd_section->size -= 4; | |
752 | else | |
753 | { | |
754 | /* There are some unknown sections in the group. */ | |
755 | (*_bfd_error_handler) | |
d003868e AM |
756 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
757 | abfd, | |
3d7f7666 | 758 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
759 | bfd_elf_string_from_elf_section (abfd, |
760 | (elf_elfheader (abfd) | |
761 | ->e_shstrndx), | |
762 | idx->shdr->sh_name), | |
3d7f7666 L |
763 | shdr->bfd_section->name); |
764 | result = FALSE; | |
765 | } | |
766 | } | |
767 | return result; | |
768 | } | |
769 | ||
72adc230 AM |
770 | bfd_boolean |
771 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
772 | { | |
773 | return elf_next_in_group (sec) != NULL; | |
774 | } | |
775 | ||
252b5132 RH |
776 | /* Make a BFD section from an ELF section. We store a pointer to the |
777 | BFD section in the bfd_section field of the header. */ | |
778 | ||
b34976b6 | 779 | bfd_boolean |
217aa764 AM |
780 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
781 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
782 | const char *name, |
783 | int shindex) | |
252b5132 RH |
784 | { |
785 | asection *newsect; | |
786 | flagword flags; | |
9c5bfbb7 | 787 | const struct elf_backend_data *bed; |
252b5132 RH |
788 | |
789 | if (hdr->bfd_section != NULL) | |
790 | { | |
791 | BFD_ASSERT (strcmp (name, | |
792 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 793 | return TRUE; |
252b5132 RH |
794 | } |
795 | ||
796 | newsect = bfd_make_section_anyway (abfd, name); | |
797 | if (newsect == NULL) | |
b34976b6 | 798 | return FALSE; |
252b5132 | 799 | |
1829f4b2 AM |
800 | hdr->bfd_section = newsect; |
801 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 802 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 803 | |
2f89ff8d L |
804 | /* Always use the real type/flags. */ |
805 | elf_section_type (newsect) = hdr->sh_type; | |
806 | elf_section_flags (newsect) = hdr->sh_flags; | |
807 | ||
252b5132 RH |
808 | newsect->filepos = hdr->sh_offset; |
809 | ||
810 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
811 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
812 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 813 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 814 | return FALSE; |
252b5132 RH |
815 | |
816 | flags = SEC_NO_FLAGS; | |
817 | if (hdr->sh_type != SHT_NOBITS) | |
818 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 819 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 820 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
821 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
822 | { | |
823 | flags |= SEC_ALLOC; | |
824 | if (hdr->sh_type != SHT_NOBITS) | |
825 | flags |= SEC_LOAD; | |
826 | } | |
827 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
828 | flags |= SEC_READONLY; | |
829 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
830 | flags |= SEC_CODE; | |
831 | else if ((flags & SEC_LOAD) != 0) | |
832 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
833 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
834 | { | |
835 | flags |= SEC_MERGE; | |
836 | newsect->entsize = hdr->sh_entsize; | |
837 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
838 | flags |= SEC_STRINGS; | |
839 | } | |
dbb410c3 AM |
840 | if (hdr->sh_flags & SHF_GROUP) |
841 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 842 | return FALSE; |
13ae64f3 JJ |
843 | if ((hdr->sh_flags & SHF_TLS) != 0) |
844 | flags |= SEC_THREAD_LOCAL; | |
252b5132 | 845 | |
3d2b39cf | 846 | if ((flags & SEC_ALLOC) == 0) |
7a6cc5fb | 847 | { |
3d2b39cf L |
848 | /* The debugging sections appear to be recognized only by name, |
849 | not any sort of flag. Their SEC_ALLOC bits are cleared. */ | |
850 | static const struct | |
851 | { | |
852 | const char *name; | |
853 | int len; | |
854 | } debug_sections [] = | |
855 | { | |
0112cd26 | 856 | { STRING_COMMA_LEN ("debug") }, /* 'd' */ |
3d2b39cf L |
857 | { NULL, 0 }, /* 'e' */ |
858 | { NULL, 0 }, /* 'f' */ | |
0112cd26 | 859 | { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */ |
3d2b39cf L |
860 | { NULL, 0 }, /* 'h' */ |
861 | { NULL, 0 }, /* 'i' */ | |
862 | { NULL, 0 }, /* 'j' */ | |
863 | { NULL, 0 }, /* 'k' */ | |
0112cd26 | 864 | { STRING_COMMA_LEN ("line") }, /* 'l' */ |
3d2b39cf L |
865 | { NULL, 0 }, /* 'm' */ |
866 | { NULL, 0 }, /* 'n' */ | |
867 | { NULL, 0 }, /* 'o' */ | |
868 | { NULL, 0 }, /* 'p' */ | |
869 | { NULL, 0 }, /* 'q' */ | |
870 | { NULL, 0 }, /* 'r' */ | |
0112cd26 | 871 | { STRING_COMMA_LEN ("stab") } /* 's' */ |
3d2b39cf | 872 | }; |
08a40648 | 873 | |
3d2b39cf L |
874 | if (name [0] == '.') |
875 | { | |
876 | int i = name [1] - 'd'; | |
877 | if (i >= 0 | |
878 | && i < (int) ARRAY_SIZE (debug_sections) | |
879 | && debug_sections [i].name != NULL | |
880 | && strncmp (&name [1], debug_sections [i].name, | |
881 | debug_sections [i].len) == 0) | |
882 | flags |= SEC_DEBUGGING; | |
883 | } | |
884 | } | |
252b5132 RH |
885 | |
886 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
887 | only link a single copy of the section. This is used to support | |
888 | g++. g++ will emit each template expansion in its own section. | |
889 | The symbols will be defined as weak, so that multiple definitions | |
890 | are permitted. The GNU linker extension is to actually discard | |
891 | all but one of the sections. */ | |
0112cd26 | 892 | if (CONST_STRNEQ (name, ".gnu.linkonce") |
b885599b | 893 | && elf_next_in_group (newsect) == NULL) |
252b5132 RH |
894 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
895 | ||
fa152c49 JW |
896 | bed = get_elf_backend_data (abfd); |
897 | if (bed->elf_backend_section_flags) | |
898 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 899 | return FALSE; |
fa152c49 | 900 | |
252b5132 | 901 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 902 | return FALSE; |
252b5132 | 903 | |
718175fa JK |
904 | /* We do not parse the PT_NOTE segments as we are interested even in the |
905 | separate debug info files which may have the segments offsets corrupted. | |
906 | PT_NOTEs from the core files are currently not parsed using BFD. */ | |
907 | if (hdr->sh_type == SHT_NOTE) | |
908 | { | |
909 | char *contents; | |
910 | ||
911 | contents = bfd_malloc (hdr->sh_size); | |
912 | if (!contents) | |
913 | return FALSE; | |
914 | ||
915 | if (!bfd_get_section_contents (abfd, hdr->bfd_section, contents, 0, | |
916 | hdr->sh_size) | |
917 | || !elf_parse_notes (abfd, contents, hdr->sh_size, -1)) | |
918 | { | |
919 | free (contents); | |
920 | return FALSE; | |
921 | } | |
922 | ||
923 | free (contents); | |
924 | } | |
925 | ||
252b5132 RH |
926 | if ((flags & SEC_ALLOC) != 0) |
927 | { | |
928 | Elf_Internal_Phdr *phdr; | |
929 | unsigned int i; | |
930 | ||
931 | /* Look through the phdrs to see if we need to adjust the lma. | |
08a40648 AM |
932 | If all the p_paddr fields are zero, we ignore them, since |
933 | some ELF linkers produce such output. */ | |
252b5132 RH |
934 | phdr = elf_tdata (abfd)->phdr; |
935 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
936 | { | |
937 | if (phdr->p_paddr != 0) | |
938 | break; | |
939 | } | |
940 | if (i < elf_elfheader (abfd)->e_phnum) | |
941 | { | |
942 | phdr = elf_tdata (abfd)->phdr; | |
943 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
944 | { | |
e0e8c97f NC |
945 | /* This section is part of this segment if its file |
946 | offset plus size lies within the segment's memory | |
947 | span and, if the section is loaded, the extent of the | |
47d9a591 | 948 | loaded data lies within the extent of the segment. |
bf36db18 NC |
949 | |
950 | Note - we used to check the p_paddr field as well, and | |
951 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 952 | though, as a perfectly valid initialised segment can |
bf36db18 | 953 | have a p_paddr of zero. Some architectures, eg ARM, |
08a40648 AM |
954 | place special significance on the address 0 and |
955 | executables need to be able to have a segment which | |
956 | covers this address. */ | |
252b5132 | 957 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
958 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
959 | && (hdr->sh_offset + hdr->sh_size | |
960 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 961 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
962 | || (hdr->sh_offset + hdr->sh_size |
963 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 964 | { |
dba143ef | 965 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
966 | newsect->lma = (phdr->p_paddr |
967 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
968 | else |
969 | /* We used to use the same adjustment for SEC_LOAD | |
970 | sections, but that doesn't work if the segment | |
971 | is packed with code from multiple VMAs. | |
972 | Instead we calculate the section LMA based on | |
973 | the segment LMA. It is assumed that the | |
974 | segment will contain sections with contiguous | |
975 | LMAs, even if the VMAs are not. */ | |
976 | newsect->lma = (phdr->p_paddr | |
977 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
978 | |
979 | /* With contiguous segments, we can't tell from file | |
980 | offsets whether a section with zero size should | |
981 | be placed at the end of one segment or the | |
982 | beginning of the next. Decide based on vaddr. */ | |
983 | if (hdr->sh_addr >= phdr->p_vaddr | |
984 | && (hdr->sh_addr + hdr->sh_size | |
985 | <= phdr->p_vaddr + phdr->p_memsz)) | |
986 | break; | |
252b5132 RH |
987 | } |
988 | } | |
989 | } | |
990 | } | |
991 | ||
b34976b6 | 992 | return TRUE; |
252b5132 RH |
993 | } |
994 | ||
995 | /* | |
996 | INTERNAL_FUNCTION | |
997 | bfd_elf_find_section | |
998 | ||
999 | SYNOPSIS | |
1000 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
1001 | ||
1002 | DESCRIPTION | |
1003 | Helper functions for GDB to locate the string tables. | |
1004 | Since BFD hides string tables from callers, GDB needs to use an | |
1005 | internal hook to find them. Sun's .stabstr, in particular, | |
1006 | isn't even pointed to by the .stab section, so ordinary | |
1007 | mechanisms wouldn't work to find it, even if we had some. | |
1008 | */ | |
1009 | ||
1010 | struct elf_internal_shdr * | |
217aa764 | 1011 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
1012 | { |
1013 | Elf_Internal_Shdr **i_shdrp; | |
1014 | char *shstrtab; | |
1015 | unsigned int max; | |
1016 | unsigned int i; | |
1017 | ||
1018 | i_shdrp = elf_elfsections (abfd); | |
1019 | if (i_shdrp != NULL) | |
1020 | { | |
9ad5cbcf AM |
1021 | shstrtab = bfd_elf_get_str_section (abfd, |
1022 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
1023 | if (shstrtab != NULL) |
1024 | { | |
9ad5cbcf | 1025 | max = elf_numsections (abfd); |
252b5132 RH |
1026 | for (i = 1; i < max; i++) |
1027 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
1028 | return i_shdrp[i]; | |
1029 | } | |
1030 | } | |
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | const char *const bfd_elf_section_type_names[] = { | |
1035 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
1036 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
1037 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
1038 | }; | |
1039 | ||
1049f94e | 1040 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
1041 | output, and the reloc is against an external symbol, and nothing |
1042 | has given us any additional addend, the resulting reloc will also | |
1043 | be against the same symbol. In such a case, we don't want to | |
1044 | change anything about the way the reloc is handled, since it will | |
1045 | all be done at final link time. Rather than put special case code | |
1046 | into bfd_perform_relocation, all the reloc types use this howto | |
1047 | function. It just short circuits the reloc if producing | |
1049f94e | 1048 | relocatable output against an external symbol. */ |
252b5132 | 1049 | |
252b5132 | 1050 | bfd_reloc_status_type |
217aa764 AM |
1051 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
1052 | arelent *reloc_entry, | |
1053 | asymbol *symbol, | |
1054 | void *data ATTRIBUTE_UNUSED, | |
1055 | asection *input_section, | |
1056 | bfd *output_bfd, | |
1057 | char **error_message ATTRIBUTE_UNUSED) | |
1058 | { | |
1059 | if (output_bfd != NULL | |
252b5132 RH |
1060 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
1061 | && (! reloc_entry->howto->partial_inplace | |
1062 | || reloc_entry->addend == 0)) | |
1063 | { | |
1064 | reloc_entry->address += input_section->output_offset; | |
1065 | return bfd_reloc_ok; | |
1066 | } | |
1067 | ||
1068 | return bfd_reloc_continue; | |
1069 | } | |
1070 | \f | |
0ac4564e L |
1071 | /* Copy the program header and other data from one object module to |
1072 | another. */ | |
252b5132 | 1073 | |
b34976b6 | 1074 | bfd_boolean |
217aa764 | 1075 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
1076 | { |
1077 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1078 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1079 | return TRUE; |
2d502050 L |
1080 | |
1081 | BFD_ASSERT (!elf_flags_init (obfd) | |
1082 | || (elf_elfheader (obfd)->e_flags | |
1083 | == elf_elfheader (ibfd)->e_flags)); | |
1084 | ||
0ac4564e | 1085 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1086 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 | 1087 | elf_flags_init (obfd) = TRUE; |
104d59d1 JM |
1088 | |
1089 | /* Copy object attributes. */ | |
1090 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
1091 | ||
b34976b6 | 1092 | return TRUE; |
2d502050 L |
1093 | } |
1094 | ||
cedc298e L |
1095 | static const char * |
1096 | get_segment_type (unsigned int p_type) | |
1097 | { | |
1098 | const char *pt; | |
1099 | switch (p_type) | |
1100 | { | |
1101 | case PT_NULL: pt = "NULL"; break; | |
1102 | case PT_LOAD: pt = "LOAD"; break; | |
1103 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1104 | case PT_INTERP: pt = "INTERP"; break; | |
1105 | case PT_NOTE: pt = "NOTE"; break; | |
1106 | case PT_SHLIB: pt = "SHLIB"; break; | |
1107 | case PT_PHDR: pt = "PHDR"; break; | |
1108 | case PT_TLS: pt = "TLS"; break; | |
1109 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; | |
2b05f1b7 | 1110 | case PT_GNU_STACK: pt = "STACK"; break; |
cedc298e L |
1111 | case PT_GNU_RELRO: pt = "RELRO"; break; |
1112 | default: pt = NULL; break; | |
1113 | } | |
1114 | return pt; | |
1115 | } | |
1116 | ||
f0b79d91 L |
1117 | /* Print out the program headers. */ |
1118 | ||
b34976b6 | 1119 | bfd_boolean |
217aa764 | 1120 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1121 | { |
217aa764 | 1122 | FILE *f = farg; |
252b5132 RH |
1123 | Elf_Internal_Phdr *p; |
1124 | asection *s; | |
1125 | bfd_byte *dynbuf = NULL; | |
1126 | ||
1127 | p = elf_tdata (abfd)->phdr; | |
1128 | if (p != NULL) | |
1129 | { | |
1130 | unsigned int i, c; | |
1131 | ||
1132 | fprintf (f, _("\nProgram Header:\n")); | |
1133 | c = elf_elfheader (abfd)->e_phnum; | |
1134 | for (i = 0; i < c; i++, p++) | |
1135 | { | |
cedc298e | 1136 | const char *pt = get_segment_type (p->p_type); |
252b5132 RH |
1137 | char buf[20]; |
1138 | ||
cedc298e | 1139 | if (pt == NULL) |
252b5132 | 1140 | { |
cedc298e L |
1141 | sprintf (buf, "0x%lx", p->p_type); |
1142 | pt = buf; | |
252b5132 | 1143 | } |
dc810e39 | 1144 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1145 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1146 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1147 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1148 | fprintf (f, " paddr 0x"); |
60b89a18 | 1149 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1150 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1151 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1152 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1153 | fprintf (f, " memsz 0x"); |
60b89a18 | 1154 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1155 | fprintf (f, " flags %c%c%c", |
1156 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1157 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1158 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1159 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1160 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1161 | fprintf (f, "\n"); |
1162 | } | |
1163 | } | |
1164 | ||
1165 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1166 | if (s != NULL) | |
1167 | { | |
1168 | int elfsec; | |
dc810e39 | 1169 | unsigned long shlink; |
252b5132 RH |
1170 | bfd_byte *extdyn, *extdynend; |
1171 | size_t extdynsize; | |
217aa764 | 1172 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1173 | |
1174 | fprintf (f, _("\nDynamic Section:\n")); | |
1175 | ||
eea6121a | 1176 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1177 | goto error_return; |
1178 | ||
1179 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1180 | if (elfsec == -1) | |
1181 | goto error_return; | |
dc810e39 | 1182 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1183 | |
1184 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1185 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1186 | ||
1187 | extdyn = dynbuf; | |
eea6121a | 1188 | extdynend = extdyn + s->size; |
252b5132 RH |
1189 | for (; extdyn < extdynend; extdyn += extdynsize) |
1190 | { | |
1191 | Elf_Internal_Dyn dyn; | |
1192 | const char *name; | |
1193 | char ab[20]; | |
b34976b6 | 1194 | bfd_boolean stringp; |
252b5132 | 1195 | |
217aa764 | 1196 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1197 | |
1198 | if (dyn.d_tag == DT_NULL) | |
1199 | break; | |
1200 | ||
b34976b6 | 1201 | stringp = FALSE; |
252b5132 RH |
1202 | switch (dyn.d_tag) |
1203 | { | |
1204 | default: | |
1205 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1206 | name = ab; | |
1207 | break; | |
1208 | ||
b34976b6 | 1209 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1210 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1211 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1212 | case DT_HASH: name = "HASH"; break; | |
1213 | case DT_STRTAB: name = "STRTAB"; break; | |
1214 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1215 | case DT_RELA: name = "RELA"; break; | |
1216 | case DT_RELASZ: name = "RELASZ"; break; | |
1217 | case DT_RELAENT: name = "RELAENT"; break; | |
1218 | case DT_STRSZ: name = "STRSZ"; break; | |
1219 | case DT_SYMENT: name = "SYMENT"; break; | |
1220 | case DT_INIT: name = "INIT"; break; | |
1221 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1222 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1223 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1224 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1225 | case DT_REL: name = "REL"; break; | |
1226 | case DT_RELSZ: name = "RELSZ"; break; | |
1227 | case DT_RELENT: name = "RELENT"; break; | |
1228 | case DT_PLTREL: name = "PLTREL"; break; | |
1229 | case DT_DEBUG: name = "DEBUG"; break; | |
1230 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1231 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1232 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1233 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1234 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1235 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1236 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1237 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1238 | case DT_FLAGS: name = "FLAGS"; break; |
1239 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1240 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1241 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1242 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1243 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1244 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1245 | case DT_FEATURE: name = "FEATURE"; break; | |
1246 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1247 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1248 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1249 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1250 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1251 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1252 | case DT_PLTPAD: name = "PLTPAD"; break; |
1253 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1254 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1255 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1256 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1257 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1258 | case DT_VERSYM: name = "VERSYM"; break; |
1259 | case DT_VERDEF: name = "VERDEF"; break; | |
1260 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1261 | case DT_VERNEED: name = "VERNEED"; break; | |
1262 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1263 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1264 | case DT_USED: name = "USED"; break; |
b34976b6 | 1265 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
fdc90cb4 | 1266 | case DT_GNU_HASH: name = "GNU_HASH"; break; |
252b5132 RH |
1267 | } |
1268 | ||
1269 | fprintf (f, " %-11s ", name); | |
1270 | if (! stringp) | |
1271 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1272 | else | |
1273 | { | |
1274 | const char *string; | |
dc810e39 | 1275 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1276 | |
dc810e39 | 1277 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1278 | if (string == NULL) |
1279 | goto error_return; | |
1280 | fprintf (f, "%s", string); | |
1281 | } | |
1282 | fprintf (f, "\n"); | |
1283 | } | |
1284 | ||
1285 | free (dynbuf); | |
1286 | dynbuf = NULL; | |
1287 | } | |
1288 | ||
1289 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1290 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1291 | { | |
fc0e6df6 | 1292 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1293 | return FALSE; |
252b5132 RH |
1294 | } |
1295 | ||
1296 | if (elf_dynverdef (abfd) != 0) | |
1297 | { | |
1298 | Elf_Internal_Verdef *t; | |
1299 | ||
1300 | fprintf (f, _("\nVersion definitions:\n")); | |
1301 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1302 | { | |
1303 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
d0fb9a8d JJ |
1304 | t->vd_flags, t->vd_hash, |
1305 | t->vd_nodename ? t->vd_nodename : "<corrupt>"); | |
1306 | if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL) | |
252b5132 RH |
1307 | { |
1308 | Elf_Internal_Verdaux *a; | |
1309 | ||
1310 | fprintf (f, "\t"); | |
1311 | for (a = t->vd_auxptr->vda_nextptr; | |
1312 | a != NULL; | |
1313 | a = a->vda_nextptr) | |
d0fb9a8d JJ |
1314 | fprintf (f, "%s ", |
1315 | a->vda_nodename ? a->vda_nodename : "<corrupt>"); | |
252b5132 RH |
1316 | fprintf (f, "\n"); |
1317 | } | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | if (elf_dynverref (abfd) != 0) | |
1322 | { | |
1323 | Elf_Internal_Verneed *t; | |
1324 | ||
1325 | fprintf (f, _("\nVersion References:\n")); | |
1326 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1327 | { | |
1328 | Elf_Internal_Vernaux *a; | |
1329 | ||
d0fb9a8d JJ |
1330 | fprintf (f, _(" required from %s:\n"), |
1331 | t->vn_filename ? t->vn_filename : "<corrupt>"); | |
252b5132 RH |
1332 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
1333 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
d0fb9a8d JJ |
1334 | a->vna_flags, a->vna_other, |
1335 | a->vna_nodename ? a->vna_nodename : "<corrupt>"); | |
252b5132 RH |
1336 | } |
1337 | } | |
1338 | ||
b34976b6 | 1339 | return TRUE; |
252b5132 RH |
1340 | |
1341 | error_return: | |
1342 | if (dynbuf != NULL) | |
1343 | free (dynbuf); | |
b34976b6 | 1344 | return FALSE; |
252b5132 RH |
1345 | } |
1346 | ||
1347 | /* Display ELF-specific fields of a symbol. */ | |
1348 | ||
1349 | void | |
217aa764 AM |
1350 | bfd_elf_print_symbol (bfd *abfd, |
1351 | void *filep, | |
1352 | asymbol *symbol, | |
1353 | bfd_print_symbol_type how) | |
252b5132 | 1354 | { |
217aa764 | 1355 | FILE *file = filep; |
252b5132 RH |
1356 | switch (how) |
1357 | { | |
1358 | case bfd_print_symbol_name: | |
1359 | fprintf (file, "%s", symbol->name); | |
1360 | break; | |
1361 | case bfd_print_symbol_more: | |
1362 | fprintf (file, "elf "); | |
60b89a18 | 1363 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1364 | fprintf (file, " %lx", (long) symbol->flags); |
1365 | break; | |
1366 | case bfd_print_symbol_all: | |
1367 | { | |
4e8a9624 AM |
1368 | const char *section_name; |
1369 | const char *name = NULL; | |
9c5bfbb7 | 1370 | const struct elf_backend_data *bed; |
7a13edea | 1371 | unsigned char st_other; |
dbb410c3 | 1372 | bfd_vma val; |
c044fabd | 1373 | |
252b5132 | 1374 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1375 | |
1376 | bed = get_elf_backend_data (abfd); | |
1377 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1378 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1379 | |
1380 | if (name == NULL) | |
1381 | { | |
7ee38065 | 1382 | name = symbol->name; |
217aa764 | 1383 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1384 | } |
1385 | ||
252b5132 RH |
1386 | fprintf (file, " %s\t", section_name); |
1387 | /* Print the "other" value for a symbol. For common symbols, | |
1388 | we've already printed the size; now print the alignment. | |
1389 | For other symbols, we have no specified alignment, and | |
1390 | we've printed the address; now print the size. */ | |
dcf6c779 | 1391 | if (symbol->section && bfd_is_com_section (symbol->section)) |
dbb410c3 AM |
1392 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; |
1393 | else | |
1394 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1395 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1396 | |
1397 | /* If we have version information, print it. */ | |
1398 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1399 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1400 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1401 | { | |
1402 | unsigned int vernum; | |
1403 | const char *version_string; | |
1404 | ||
1405 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1406 | ||
1407 | if (vernum == 0) | |
1408 | version_string = ""; | |
1409 | else if (vernum == 1) | |
1410 | version_string = "Base"; | |
1411 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1412 | version_string = | |
1413 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1414 | else | |
1415 | { | |
1416 | Elf_Internal_Verneed *t; | |
1417 | ||
1418 | version_string = ""; | |
1419 | for (t = elf_tdata (abfd)->verref; | |
1420 | t != NULL; | |
1421 | t = t->vn_nextref) | |
1422 | { | |
1423 | Elf_Internal_Vernaux *a; | |
1424 | ||
1425 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1426 | { | |
1427 | if (a->vna_other == vernum) | |
1428 | { | |
1429 | version_string = a->vna_nodename; | |
1430 | break; | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1437 | fprintf (file, " %-11s", version_string); | |
1438 | else | |
1439 | { | |
1440 | int i; | |
1441 | ||
1442 | fprintf (file, " (%s)", version_string); | |
1443 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1444 | putc (' ', file); | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1449 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1450 | |
7a13edea NC |
1451 | switch (st_other) |
1452 | { | |
1453 | case 0: break; | |
1454 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1455 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1456 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1457 | default: | |
1458 | /* Some other non-defined flags are also present, so print | |
1459 | everything hex. */ | |
1460 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1461 | } | |
252b5132 | 1462 | |
587ff49e | 1463 | fprintf (file, " %s", name); |
252b5132 RH |
1464 | } |
1465 | break; | |
1466 | } | |
1467 | } | |
252b5132 | 1468 | |
252b5132 RH |
1469 | /* Allocate an ELF string table--force the first byte to be zero. */ |
1470 | ||
1471 | struct bfd_strtab_hash * | |
217aa764 | 1472 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1473 | { |
1474 | struct bfd_strtab_hash *ret; | |
1475 | ||
1476 | ret = _bfd_stringtab_init (); | |
1477 | if (ret != NULL) | |
1478 | { | |
1479 | bfd_size_type loc; | |
1480 | ||
b34976b6 | 1481 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1482 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1483 | if (loc == (bfd_size_type) -1) | |
1484 | { | |
1485 | _bfd_stringtab_free (ret); | |
1486 | ret = NULL; | |
1487 | } | |
1488 | } | |
1489 | return ret; | |
1490 | } | |
1491 | \f | |
1492 | /* ELF .o/exec file reading */ | |
1493 | ||
c044fabd | 1494 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1495 | |
b34976b6 | 1496 | bfd_boolean |
217aa764 | 1497 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1498 | { |
1499 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1500 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1501 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1502 | const char *name; |
252b5132 | 1503 | |
1b3a8575 AM |
1504 | name = bfd_elf_string_from_elf_section (abfd, |
1505 | elf_elfheader (abfd)->e_shstrndx, | |
1506 | hdr->sh_name); | |
933d961a JJ |
1507 | if (name == NULL) |
1508 | return FALSE; | |
252b5132 RH |
1509 | |
1510 | switch (hdr->sh_type) | |
1511 | { | |
1512 | case SHT_NULL: | |
1513 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1514 | return TRUE; |
252b5132 RH |
1515 | |
1516 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1517 | case SHT_NOBITS: /* .bss section. */ |
1518 | case SHT_HASH: /* .hash section. */ | |
1519 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1520 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1521 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1522 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1523 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
fdc90cb4 | 1524 | case SHT_GNU_HASH: /* .gnu.hash section. */ |
6dc132d9 | 1525 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1526 | |
797fc050 | 1527 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1528 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1529 | return FALSE; |
8e0ed13f NC |
1530 | if (hdr->sh_link > elf_numsections (abfd) |
1531 | || elf_elfsections (abfd)[hdr->sh_link] == NULL) | |
1532 | return FALSE; | |
797fc050 AM |
1533 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1534 | { | |
1535 | Elf_Internal_Shdr *dynsymhdr; | |
1536 | ||
1537 | /* The shared libraries distributed with hpux11 have a bogus | |
1538 | sh_link field for the ".dynamic" section. Find the | |
1539 | string table for the ".dynsym" section instead. */ | |
1540 | if (elf_dynsymtab (abfd) != 0) | |
1541 | { | |
1542 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1543 | hdr->sh_link = dynsymhdr->sh_link; | |
1544 | } | |
1545 | else | |
1546 | { | |
1547 | unsigned int i, num_sec; | |
1548 | ||
1549 | num_sec = elf_numsections (abfd); | |
1550 | for (i = 1; i < num_sec; i++) | |
1551 | { | |
1552 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1553 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1554 | { | |
1555 | hdr->sh_link = dynsymhdr->sh_link; | |
1556 | break; | |
1557 | } | |
1558 | } | |
1559 | } | |
1560 | } | |
1561 | break; | |
1562 | ||
252b5132 RH |
1563 | case SHT_SYMTAB: /* A symbol table */ |
1564 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1565 | return TRUE; |
252b5132 | 1566 | |
a50b2160 JJ |
1567 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1568 | return FALSE; | |
252b5132 RH |
1569 | BFD_ASSERT (elf_onesymtab (abfd) == 0); |
1570 | elf_onesymtab (abfd) = shindex; | |
1571 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1572 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1573 | abfd->flags |= HAS_SYMS; | |
1574 | ||
1575 | /* Sometimes a shared object will map in the symbol table. If | |
08a40648 AM |
1576 | SHF_ALLOC is set, and this is a shared object, then we also |
1577 | treat this section as a BFD section. We can not base the | |
1578 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1579 | set in a relocatable object file, which would confuse the | |
1580 | linker. */ | |
252b5132 RH |
1581 | if ((hdr->sh_flags & SHF_ALLOC) != 0 |
1582 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1583 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1584 | shindex)) | |
b34976b6 | 1585 | return FALSE; |
252b5132 | 1586 | |
1b3a8575 AM |
1587 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1588 | can't read symbols without that section loaded as well. It | |
1589 | is most likely specified by the next section header. */ | |
1590 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1591 | { | |
1592 | unsigned int i, num_sec; | |
1593 | ||
1594 | num_sec = elf_numsections (abfd); | |
1595 | for (i = shindex + 1; i < num_sec; i++) | |
1596 | { | |
1597 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1598 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1599 | && hdr2->sh_link == shindex) | |
1600 | break; | |
1601 | } | |
1602 | if (i == num_sec) | |
1603 | for (i = 1; i < shindex; i++) | |
1604 | { | |
1605 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1606 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1607 | && hdr2->sh_link == shindex) | |
1608 | break; | |
1609 | } | |
1610 | if (i != shindex) | |
1611 | return bfd_section_from_shdr (abfd, i); | |
1612 | } | |
b34976b6 | 1613 | return TRUE; |
252b5132 RH |
1614 | |
1615 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1616 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1617 | return TRUE; |
252b5132 | 1618 | |
a50b2160 JJ |
1619 | if (hdr->sh_entsize != bed->s->sizeof_sym) |
1620 | return FALSE; | |
252b5132 RH |
1621 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); |
1622 | elf_dynsymtab (abfd) = shindex; | |
1623 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1624 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1625 | abfd->flags |= HAS_SYMS; | |
1626 | ||
1627 | /* Besides being a symbol table, we also treat this as a regular | |
1628 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1629 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1630 | |
9ad5cbcf AM |
1631 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1632 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1633 | return TRUE; |
9ad5cbcf | 1634 | |
1b3a8575 | 1635 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1636 | elf_symtab_shndx (abfd) = shindex; |
1637 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1638 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1639 | return TRUE; |
9ad5cbcf | 1640 | |
252b5132 RH |
1641 | case SHT_STRTAB: /* A string table */ |
1642 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1643 | return TRUE; |
252b5132 RH |
1644 | if (ehdr->e_shstrndx == shindex) |
1645 | { | |
1646 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1647 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1648 | return TRUE; |
252b5132 | 1649 | } |
1b3a8575 AM |
1650 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1651 | { | |
1652 | symtab_strtab: | |
1653 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1654 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1655 | return TRUE; | |
1656 | } | |
1657 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1658 | { | |
1659 | dynsymtab_strtab: | |
1660 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1661 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1662 | elf_elfsections (abfd)[shindex] = hdr; | |
1663 | /* We also treat this as a regular section, so that objcopy | |
1664 | can handle it. */ | |
6dc132d9 L |
1665 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1666 | shindex); | |
1b3a8575 | 1667 | } |
252b5132 | 1668 | |
1b3a8575 AM |
1669 | /* If the string table isn't one of the above, then treat it as a |
1670 | regular section. We need to scan all the headers to be sure, | |
1671 | just in case this strtab section appeared before the above. */ | |
1672 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1673 | { | |
1674 | unsigned int i, num_sec; | |
252b5132 | 1675 | |
1b3a8575 AM |
1676 | num_sec = elf_numsections (abfd); |
1677 | for (i = 1; i < num_sec; i++) | |
1678 | { | |
1679 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1680 | if (hdr2->sh_link == shindex) | |
1681 | { | |
933d961a JJ |
1682 | /* Prevent endless recursion on broken objects. */ |
1683 | if (i == shindex) | |
1684 | return FALSE; | |
1b3a8575 AM |
1685 | if (! bfd_section_from_shdr (abfd, i)) |
1686 | return FALSE; | |
1687 | if (elf_onesymtab (abfd) == i) | |
1688 | goto symtab_strtab; | |
1689 | if (elf_dynsymtab (abfd) == i) | |
1690 | goto dynsymtab_strtab; | |
1691 | } | |
1692 | } | |
1693 | } | |
6dc132d9 | 1694 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1695 | |
1696 | case SHT_REL: | |
1697 | case SHT_RELA: | |
1698 | /* *These* do a lot of work -- but build no sections! */ | |
1699 | { | |
1700 | asection *target_sect; | |
1701 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1702 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1703 | |
aa2ca951 JJ |
1704 | if (hdr->sh_entsize |
1705 | != (bfd_size_type) (hdr->sh_type == SHT_REL | |
a50b2160 JJ |
1706 | ? bed->s->sizeof_rel : bed->s->sizeof_rela)) |
1707 | return FALSE; | |
1708 | ||
03ae5f59 | 1709 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1710 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1711 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1712 | { |
1713 | ((*_bfd_error_handler) | |
d003868e AM |
1714 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1715 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1716 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1717 | shindex); | |
03ae5f59 ILT |
1718 | } |
1719 | ||
252b5132 RH |
1720 | /* For some incomprehensible reason Oracle distributes |
1721 | libraries for Solaris in which some of the objects have | |
1722 | bogus sh_link fields. It would be nice if we could just | |
1723 | reject them, but, unfortunately, some people need to use | |
1724 | them. We scan through the section headers; if we find only | |
1725 | one suitable symbol table, we clobber the sh_link to point | |
1726 | to it. I hope this doesn't break anything. */ | |
1727 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1728 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1729 | { | |
9ad5cbcf | 1730 | unsigned int scan; |
252b5132 RH |
1731 | int found; |
1732 | ||
1733 | found = 0; | |
9ad5cbcf | 1734 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1735 | { |
1736 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1737 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1738 | { | |
1739 | if (found != 0) | |
1740 | { | |
1741 | found = 0; | |
1742 | break; | |
1743 | } | |
1744 | found = scan; | |
1745 | } | |
1746 | } | |
1747 | if (found != 0) | |
1748 | hdr->sh_link = found; | |
1749 | } | |
1750 | ||
1751 | /* Get the symbol table. */ | |
1b3a8575 AM |
1752 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1753 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1754 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1755 | return FALSE; |
252b5132 RH |
1756 | |
1757 | /* If this reloc section does not use the main symbol table we | |
1758 | don't treat it as a reloc section. BFD can't adequately | |
1759 | represent such a section, so at least for now, we don't | |
c044fabd | 1760 | try. We just present it as a normal section. We also |
60bcf0fa | 1761 | can't use it as a reloc section if it points to the null |
185ef66d AM |
1762 | section, an invalid section, or another reloc section. */ |
1763 | if (hdr->sh_link != elf_onesymtab (abfd) | |
1764 | || hdr->sh_info == SHN_UNDEF | |
1765 | || (hdr->sh_info >= SHN_LORESERVE && hdr->sh_info <= SHN_HIRESERVE) | |
1766 | || hdr->sh_info >= num_sec | |
1767 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL | |
1768 | || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA) | |
6dc132d9 L |
1769 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1770 | shindex); | |
252b5132 RH |
1771 | |
1772 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1773 | return FALSE; |
252b5132 RH |
1774 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1775 | if (target_sect == NULL) | |
b34976b6 | 1776 | return FALSE; |
252b5132 RH |
1777 | |
1778 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1779 | || target_sect->reloc_count == 0) | |
1780 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1781 | else | |
1782 | { | |
dc810e39 | 1783 | bfd_size_type amt; |
252b5132 | 1784 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1785 | amt = sizeof (*hdr2); |
217aa764 | 1786 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
1787 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1788 | } | |
1789 | *hdr2 = *hdr; | |
1790 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1791 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1792 | target_sect->flags |= SEC_RELOC; |
1793 | target_sect->relocation = NULL; | |
1794 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1795 | /* In the section to which the relocations apply, mark whether |
1796 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1797 | if (hdr->sh_size != 0) |
68bfbfcc | 1798 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1799 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1800 | return TRUE; |
252b5132 | 1801 | } |
252b5132 RH |
1802 | |
1803 | case SHT_GNU_verdef: | |
1804 | elf_dynverdef (abfd) = shindex; | |
1805 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1806 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1807 | |
1808 | case SHT_GNU_versym: | |
a50b2160 JJ |
1809 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1810 | return FALSE; | |
252b5132 RH |
1811 | elf_dynversym (abfd) = shindex; |
1812 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1813 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1814 | |
1815 | case SHT_GNU_verneed: | |
1816 | elf_dynverref (abfd) = shindex; | |
1817 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1818 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1819 | |
1820 | case SHT_SHLIB: | |
b34976b6 | 1821 | return TRUE; |
252b5132 | 1822 | |
dbb410c3 | 1823 | case SHT_GROUP: |
b885599b AM |
1824 | /* We need a BFD section for objcopy and relocatable linking, |
1825 | and it's handy to have the signature available as the section | |
1826 | name. */ | |
1783205a | 1827 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1828 | return FALSE; |
b885599b AM |
1829 | name = group_signature (abfd, hdr); |
1830 | if (name == NULL) | |
b34976b6 | 1831 | return FALSE; |
6dc132d9 | 1832 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1833 | return FALSE; |
dbb410c3 AM |
1834 | if (hdr->contents != NULL) |
1835 | { | |
1836 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1837 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1838 | asection *s; |
1839 | ||
b885599b AM |
1840 | if (idx->flags & GRP_COMDAT) |
1841 | hdr->bfd_section->flags | |
1842 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1843 | ||
45c5e9ed L |
1844 | /* We try to keep the same section order as it comes in. */ |
1845 | idx += n_elt; | |
dbb410c3 | 1846 | while (--n_elt != 0) |
1783205a NC |
1847 | { |
1848 | --idx; | |
1849 | ||
1850 | if (idx->shdr != NULL | |
1851 | && (s = idx->shdr->bfd_section) != NULL | |
1852 | && elf_next_in_group (s) != NULL) | |
1853 | { | |
1854 | elf_next_in_group (hdr->bfd_section) = s; | |
1855 | break; | |
1856 | } | |
1857 | } | |
dbb410c3 AM |
1858 | } |
1859 | break; | |
1860 | ||
252b5132 | 1861 | default: |
104d59d1 JM |
1862 | /* Possibly an attributes section. */ |
1863 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1864 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1865 | { | |
1866 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1867 | return FALSE; | |
1868 | _bfd_elf_parse_attributes (abfd, hdr); | |
1869 | return TRUE; | |
1870 | } | |
1871 | ||
252b5132 | 1872 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1873 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1874 | return TRUE; | |
1875 | ||
1876 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1877 | { | |
1878 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1879 | /* FIXME: How to properly handle allocated section reserved | |
1880 | for applications? */ | |
1881 | (*_bfd_error_handler) | |
1882 | (_("%B: don't know how to handle allocated, application " | |
1883 | "specific section `%s' [0x%8x]"), | |
1884 | abfd, name, hdr->sh_type); | |
1885 | else | |
1886 | /* Allow sections reserved for applications. */ | |
1887 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1888 | shindex); | |
1889 | } | |
1890 | else if (hdr->sh_type >= SHT_LOPROC | |
1891 | && hdr->sh_type <= SHT_HIPROC) | |
1892 | /* FIXME: We should handle this section. */ | |
1893 | (*_bfd_error_handler) | |
1894 | (_("%B: don't know how to handle processor specific section " | |
1895 | "`%s' [0x%8x]"), | |
1896 | abfd, name, hdr->sh_type); | |
1897 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1898 | { |
1899 | /* Unrecognised OS-specific sections. */ | |
1900 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1901 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1902 | required to correctly process the section and the file should |
ff15b240 NC |
1903 | be rejected with an error message. */ |
1904 | (*_bfd_error_handler) | |
1905 | (_("%B: don't know how to handle OS specific section " | |
1906 | "`%s' [0x%8x]"), | |
1907 | abfd, name, hdr->sh_type); | |
1908 | else | |
1909 | /* Otherwise it should be processed. */ | |
1910 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1911 | } | |
3eb70a79 L |
1912 | else |
1913 | /* FIXME: We should handle this section. */ | |
1914 | (*_bfd_error_handler) | |
1915 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1916 | abfd, name, hdr->sh_type); | |
1917 | ||
1918 | return FALSE; | |
252b5132 RH |
1919 | } |
1920 | ||
b34976b6 | 1921 | return TRUE; |
252b5132 RH |
1922 | } |
1923 | ||
ec338859 AM |
1924 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
1925 | Return SEC for sections that have no elf section, and NULL on error. */ | |
1926 | ||
1927 | asection * | |
217aa764 AM |
1928 | bfd_section_from_r_symndx (bfd *abfd, |
1929 | struct sym_sec_cache *cache, | |
1930 | asection *sec, | |
1931 | unsigned long r_symndx) | |
ec338859 | 1932 | { |
ec338859 | 1933 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
a5d1b3b5 | 1934 | asection *s; |
ec338859 | 1935 | |
a5d1b3b5 AM |
1936 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
1937 | { | |
1938 | Elf_Internal_Shdr *symtab_hdr; | |
1939 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
1940 | Elf_External_Sym_Shndx eshndx; | |
1941 | Elf_Internal_Sym isym; | |
ec338859 | 1942 | |
a5d1b3b5 AM |
1943 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1944 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
1945 | &isym, esym, &eshndx) == NULL) | |
1946 | return NULL; | |
9ad5cbcf | 1947 | |
a5d1b3b5 AM |
1948 | if (cache->abfd != abfd) |
1949 | { | |
1950 | memset (cache->indx, -1, sizeof (cache->indx)); | |
1951 | cache->abfd = abfd; | |
1952 | } | |
1953 | cache->indx[ent] = r_symndx; | |
1954 | cache->shndx[ent] = isym.st_shndx; | |
ec338859 | 1955 | } |
a5d1b3b5 AM |
1956 | |
1957 | s = bfd_section_from_elf_index (abfd, cache->shndx[ent]); | |
1958 | if (s != NULL) | |
1959 | return s; | |
1960 | ||
1961 | return sec; | |
ec338859 AM |
1962 | } |
1963 | ||
252b5132 RH |
1964 | /* Given an ELF section number, retrieve the corresponding BFD |
1965 | section. */ | |
1966 | ||
1967 | asection * | |
217aa764 | 1968 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 1969 | { |
9ad5cbcf | 1970 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
1971 | return NULL; |
1972 | return elf_elfsections (abfd)[index]->bfd_section; | |
1973 | } | |
1974 | ||
b35d266b | 1975 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 1976 | { |
0112cd26 NC |
1977 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1978 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1979 | }; |
1980 | ||
b35d266b | 1981 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 1982 | { |
0112cd26 NC |
1983 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1984 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1985 | }; |
1986 | ||
b35d266b | 1987 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 1988 | { |
0112cd26 NC |
1989 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1990 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1991 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
1992 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
1993 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
1994 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
1995 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
1996 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
1997 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
1998 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
1999 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2000 | }; |
2001 | ||
b35d266b | 2002 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2003 | { |
0112cd26 NC |
2004 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2005 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2006 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2007 | }; |
2008 | ||
b35d266b | 2009 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2010 | { |
0112cd26 NC |
2011 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2012 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2013 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2014 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2015 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2016 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2017 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2018 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2019 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2020 | }; |
2021 | ||
b35d266b | 2022 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2023 | { |
0112cd26 NC |
2024 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2025 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2026 | }; |
2027 | ||
b35d266b | 2028 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2029 | { |
0112cd26 NC |
2030 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2031 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2032 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2033 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2034 | }; |
2035 | ||
b35d266b | 2036 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2037 | { |
0112cd26 NC |
2038 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2039 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2040 | }; |
2041 | ||
b35d266b | 2042 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2043 | { |
0112cd26 NC |
2044 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2045 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2046 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2047 | }; |
2048 | ||
b35d266b | 2049 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2050 | { |
0112cd26 NC |
2051 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2052 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2053 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2054 | }; |
2055 | ||
b35d266b | 2056 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2057 | { |
0112cd26 NC |
2058 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2059 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2060 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2061 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2062 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2063 | }; |
2064 | ||
b35d266b | 2065 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2066 | { |
0112cd26 NC |
2067 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2068 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2069 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2070 | /* See struct bfd_elf_special_section declaration for the semantics of |
2071 | this special case where .prefix_length != strlen (.prefix). */ | |
2072 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2073 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2074 | }; |
2075 | ||
b35d266b | 2076 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2077 | { |
0112cd26 NC |
2078 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2079 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2080 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2081 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2082 | }; |
2083 | ||
b35d266b | 2084 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2085 | { |
7f4d3958 | 2086 | special_sections_b, /* 'b' */ |
98ece1b3 | 2087 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2088 | special_sections_d, /* 'd' */ |
2089 | NULL, /* 'e' */ | |
2090 | special_sections_f, /* 'f' */ | |
2091 | special_sections_g, /* 'g' */ | |
2092 | special_sections_h, /* 'h' */ | |
2093 | special_sections_i, /* 'i' */ | |
2094 | NULL, /* 'j' */ | |
2095 | NULL, /* 'k' */ | |
2096 | special_sections_l, /* 'l' */ | |
2097 | NULL, /* 'm' */ | |
2098 | special_sections_n, /* 'n' */ | |
2099 | NULL, /* 'o' */ | |
2100 | special_sections_p, /* 'p' */ | |
2101 | NULL, /* 'q' */ | |
2102 | special_sections_r, /* 'r' */ | |
2103 | special_sections_s, /* 's' */ | |
2104 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2105 | }; |
2106 | ||
551b43fd AM |
2107 | const struct bfd_elf_special_section * |
2108 | _bfd_elf_get_special_section (const char *name, | |
2109 | const struct bfd_elf_special_section *spec, | |
2110 | unsigned int rela) | |
2f89ff8d L |
2111 | { |
2112 | int i; | |
7f4d3958 | 2113 | int len; |
7f4d3958 | 2114 | |
551b43fd | 2115 | len = strlen (name); |
7f4d3958 | 2116 | |
551b43fd | 2117 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2118 | { |
2119 | int suffix_len; | |
551b43fd | 2120 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2121 | |
2122 | if (len < prefix_len) | |
2123 | continue; | |
551b43fd | 2124 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2125 | continue; |
2126 | ||
551b43fd | 2127 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2128 | if (suffix_len <= 0) |
2129 | { | |
2130 | if (name[prefix_len] != 0) | |
2131 | { | |
2132 | if (suffix_len == 0) | |
2133 | continue; | |
2134 | if (name[prefix_len] != '.' | |
2135 | && (suffix_len == -2 | |
551b43fd | 2136 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2137 | continue; |
2138 | } | |
2139 | } | |
2140 | else | |
2141 | { | |
2142 | if (len < prefix_len + suffix_len) | |
2143 | continue; | |
2144 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2145 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2146 | suffix_len) != 0) |
2147 | continue; | |
2148 | } | |
551b43fd | 2149 | return &spec[i]; |
7dcb9820 | 2150 | } |
2f89ff8d L |
2151 | |
2152 | return NULL; | |
2153 | } | |
2154 | ||
7dcb9820 | 2155 | const struct bfd_elf_special_section * |
29ef7005 | 2156 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2157 | { |
551b43fd AM |
2158 | int i; |
2159 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2160 | const struct elf_backend_data *bed; |
2f89ff8d L |
2161 | |
2162 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2163 | if (sec->name == NULL) |
2164 | return NULL; | |
2f89ff8d | 2165 | |
29ef7005 L |
2166 | bed = get_elf_backend_data (abfd); |
2167 | spec = bed->special_sections; | |
2168 | if (spec) | |
2169 | { | |
2170 | spec = _bfd_elf_get_special_section (sec->name, | |
2171 | bed->special_sections, | |
2172 | sec->use_rela_p); | |
2173 | if (spec != NULL) | |
2174 | return spec; | |
2175 | } | |
2176 | ||
551b43fd AM |
2177 | if (sec->name[0] != '.') |
2178 | return NULL; | |
2f89ff8d | 2179 | |
551b43fd AM |
2180 | i = sec->name[1] - 'b'; |
2181 | if (i < 0 || i > 't' - 'b') | |
2182 | return NULL; | |
2183 | ||
2184 | spec = special_sections[i]; | |
2f89ff8d | 2185 | |
551b43fd AM |
2186 | if (spec == NULL) |
2187 | return NULL; | |
2188 | ||
2189 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2190 | } |
2191 | ||
b34976b6 | 2192 | bfd_boolean |
217aa764 | 2193 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2194 | { |
2195 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2196 | const struct elf_backend_data *bed; |
7dcb9820 | 2197 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2198 | |
f0abc2a1 AM |
2199 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2200 | if (sdata == NULL) | |
2201 | { | |
217aa764 | 2202 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2203 | if (sdata == NULL) |
2204 | return FALSE; | |
217aa764 | 2205 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2206 | } |
bf572ba0 | 2207 | |
551b43fd AM |
2208 | /* Indicate whether or not this section should use RELA relocations. */ |
2209 | bed = get_elf_backend_data (abfd); | |
2210 | sec->use_rela_p = bed->default_use_rela_p; | |
2211 | ||
e843e0f8 L |
2212 | /* When we read a file, we don't need to set ELF section type and |
2213 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2214 | anyway. We will set ELF section type and flags for all linker | |
2215 | created sections. If user specifies BFD section flags, we will | |
2216 | set ELF section type and flags based on BFD section flags in | |
2217 | elf_fake_sections. */ | |
2218 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2219 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2220 | { |
551b43fd | 2221 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2222 | if (ssect != NULL) |
2223 | { | |
2224 | elf_section_type (sec) = ssect->type; | |
2225 | elf_section_flags (sec) = ssect->attr; | |
2226 | } | |
2f89ff8d L |
2227 | } |
2228 | ||
f592407e | 2229 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2230 | } |
2231 | ||
2232 | /* Create a new bfd section from an ELF program header. | |
2233 | ||
2234 | Since program segments have no names, we generate a synthetic name | |
2235 | of the form segment<NUM>, where NUM is generally the index in the | |
2236 | program header table. For segments that are split (see below) we | |
2237 | generate the names segment<NUM>a and segment<NUM>b. | |
2238 | ||
2239 | Note that some program segments may have a file size that is different than | |
2240 | (less than) the memory size. All this means is that at execution the | |
2241 | system must allocate the amount of memory specified by the memory size, | |
2242 | but only initialize it with the first "file size" bytes read from the | |
2243 | file. This would occur for example, with program segments consisting | |
2244 | of combined data+bss. | |
2245 | ||
2246 | To handle the above situation, this routine generates TWO bfd sections | |
2247 | for the single program segment. The first has the length specified by | |
2248 | the file size of the segment, and the second has the length specified | |
2249 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2250 | into its initialized and uninitialized parts. |
252b5132 RH |
2251 | |
2252 | */ | |
2253 | ||
b34976b6 | 2254 | bfd_boolean |
217aa764 AM |
2255 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2256 | Elf_Internal_Phdr *hdr, | |
2257 | int index, | |
2258 | const char *typename) | |
252b5132 RH |
2259 | { |
2260 | asection *newsect; | |
2261 | char *name; | |
2262 | char namebuf[64]; | |
d4c88bbb | 2263 | size_t len; |
252b5132 RH |
2264 | int split; |
2265 | ||
2266 | split = ((hdr->p_memsz > 0) | |
2267 | && (hdr->p_filesz > 0) | |
2268 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2269 | |
2270 | if (hdr->p_filesz > 0) | |
252b5132 | 2271 | { |
d5191d0c AM |
2272 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
2273 | len = strlen (namebuf) + 1; | |
2274 | name = bfd_alloc (abfd, len); | |
2275 | if (!name) | |
2276 | return FALSE; | |
2277 | memcpy (name, namebuf, len); | |
2278 | newsect = bfd_make_section (abfd, name); | |
2279 | if (newsect == NULL) | |
2280 | return FALSE; | |
2281 | newsect->vma = hdr->p_vaddr; | |
2282 | newsect->lma = hdr->p_paddr; | |
2283 | newsect->size = hdr->p_filesz; | |
2284 | newsect->filepos = hdr->p_offset; | |
2285 | newsect->flags |= SEC_HAS_CONTENTS; | |
2286 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2287 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2288 | { |
d5191d0c AM |
2289 | newsect->flags |= SEC_ALLOC; |
2290 | newsect->flags |= SEC_LOAD; | |
2291 | if (hdr->p_flags & PF_X) | |
2292 | { | |
2293 | /* FIXME: all we known is that it has execute PERMISSION, | |
2294 | may be data. */ | |
2295 | newsect->flags |= SEC_CODE; | |
2296 | } | |
2297 | } | |
2298 | if (!(hdr->p_flags & PF_W)) | |
2299 | { | |
2300 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2301 | } |
252b5132 RH |
2302 | } |
2303 | ||
d5191d0c | 2304 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2305 | { |
d5191d0c AM |
2306 | bfd_vma align; |
2307 | ||
2308 | sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : ""); | |
d4c88bbb | 2309 | len = strlen (namebuf) + 1; |
217aa764 | 2310 | name = bfd_alloc (abfd, len); |
252b5132 | 2311 | if (!name) |
b34976b6 | 2312 | return FALSE; |
d4c88bbb | 2313 | memcpy (name, namebuf, len); |
252b5132 RH |
2314 | newsect = bfd_make_section (abfd, name); |
2315 | if (newsect == NULL) | |
b34976b6 | 2316 | return FALSE; |
252b5132 RH |
2317 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2318 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2319 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2320 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2321 | align = newsect->vma & -newsect->vma; | |
2322 | if (align == 0 || align > hdr->p_align) | |
2323 | align = hdr->p_align; | |
2324 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2325 | if (hdr->p_type == PT_LOAD) |
2326 | { | |
d5191d0c AM |
2327 | /* Hack for gdb. Segments that have not been modified do |
2328 | not have their contents written to a core file, on the | |
2329 | assumption that a debugger can find the contents in the | |
2330 | executable. We flag this case by setting the fake | |
2331 | section size to zero. Note that "real" bss sections will | |
2332 | always have their contents dumped to the core file. */ | |
2333 | if (bfd_get_format (abfd) == bfd_core) | |
2334 | newsect->size = 0; | |
252b5132 RH |
2335 | newsect->flags |= SEC_ALLOC; |
2336 | if (hdr->p_flags & PF_X) | |
2337 | newsect->flags |= SEC_CODE; | |
2338 | } | |
2339 | if (!(hdr->p_flags & PF_W)) | |
2340 | newsect->flags |= SEC_READONLY; | |
2341 | } | |
2342 | ||
b34976b6 | 2343 | return TRUE; |
252b5132 RH |
2344 | } |
2345 | ||
b34976b6 | 2346 | bfd_boolean |
217aa764 | 2347 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2348 | { |
9c5bfbb7 | 2349 | const struct elf_backend_data *bed; |
20cfcaae NC |
2350 | |
2351 | switch (hdr->p_type) | |
2352 | { | |
2353 | case PT_NULL: | |
2354 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2355 | ||
2356 | case PT_LOAD: | |
2357 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2358 | ||
2359 | case PT_DYNAMIC: | |
2360 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2361 | ||
2362 | case PT_INTERP: | |
2363 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2364 | ||
2365 | case PT_NOTE: | |
2366 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2367 | return FALSE; |
718175fa | 2368 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2369 | return FALSE; |
2370 | return TRUE; | |
20cfcaae NC |
2371 | |
2372 | case PT_SHLIB: | |
2373 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2374 | ||
2375 | case PT_PHDR: | |
2376 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2377 | ||
811072d8 RM |
2378 | case PT_GNU_EH_FRAME: |
2379 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2380 | "eh_frame_hdr"); | |
2381 | ||
2b05f1b7 L |
2382 | case PT_GNU_STACK: |
2383 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
9ee5e499 | 2384 | |
8c37241b JJ |
2385 | case PT_GNU_RELRO: |
2386 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2387 | ||
20cfcaae | 2388 | default: |
8c1acd09 | 2389 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2390 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2391 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2392 | } |
2393 | } | |
2394 | ||
23bc299b | 2395 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2396 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2397 | relocations; otherwise, we use REL relocations. */ |
2398 | ||
b34976b6 | 2399 | bfd_boolean |
217aa764 AM |
2400 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2401 | Elf_Internal_Shdr *rel_hdr, | |
2402 | asection *asect, | |
2403 | bfd_boolean use_rela_p) | |
23bc299b MM |
2404 | { |
2405 | char *name; | |
9c5bfbb7 | 2406 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2407 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2408 | |
dc810e39 | 2409 | name = bfd_alloc (abfd, amt); |
23bc299b | 2410 | if (name == NULL) |
b34976b6 | 2411 | return FALSE; |
23bc299b MM |
2412 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2413 | rel_hdr->sh_name = | |
2b0f7ef9 | 2414 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2415 | FALSE); |
23bc299b | 2416 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2417 | return FALSE; |
23bc299b MM |
2418 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2419 | rel_hdr->sh_entsize = (use_rela_p | |
2420 | ? bed->s->sizeof_rela | |
2421 | : bed->s->sizeof_rel); | |
45d6a902 | 2422 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2423 | rel_hdr->sh_flags = 0; |
2424 | rel_hdr->sh_addr = 0; | |
2425 | rel_hdr->sh_size = 0; | |
2426 | rel_hdr->sh_offset = 0; | |
2427 | ||
b34976b6 | 2428 | return TRUE; |
23bc299b MM |
2429 | } |
2430 | ||
252b5132 RH |
2431 | /* Set up an ELF internal section header for a section. */ |
2432 | ||
252b5132 | 2433 | static void |
217aa764 | 2434 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2435 | { |
9c5bfbb7 | 2436 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2437 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2438 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2439 | unsigned int sh_type; |
252b5132 RH |
2440 | |
2441 | if (*failedptr) | |
2442 | { | |
2443 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2444 | loop. */ |
252b5132 RH |
2445 | return; |
2446 | } | |
2447 | ||
2448 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2449 | ||
e57b5356 AM |
2450 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2451 | asect->name, FALSE); | |
2452 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2453 | { |
b34976b6 | 2454 | *failedptr = TRUE; |
252b5132 RH |
2455 | return; |
2456 | } | |
2457 | ||
a4d8e49b | 2458 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2459 | |
2460 | if ((asect->flags & SEC_ALLOC) != 0 | |
2461 | || asect->user_set_vma) | |
2462 | this_hdr->sh_addr = asect->vma; | |
2463 | else | |
2464 | this_hdr->sh_addr = 0; | |
2465 | ||
2466 | this_hdr->sh_offset = 0; | |
eea6121a | 2467 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2468 | this_hdr->sh_link = 0; |
2469 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2470 | /* The sh_entsize and sh_info fields may have been set already by | |
2471 | copy_private_section_data. */ | |
2472 | ||
2473 | this_hdr->bfd_section = asect; | |
2474 | this_hdr->contents = NULL; | |
2475 | ||
3cddba1e L |
2476 | /* If the section type is unspecified, we set it based on |
2477 | asect->flags. */ | |
98ece1b3 AM |
2478 | if ((asect->flags & SEC_GROUP) != 0) |
2479 | sh_type = SHT_GROUP; | |
2480 | else if ((asect->flags & SEC_ALLOC) != 0 | |
2481 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
2482 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2483 | sh_type = SHT_NOBITS; | |
2484 | else | |
2485 | sh_type = SHT_PROGBITS; | |
2486 | ||
3cddba1e | 2487 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
2488 | this_hdr->sh_type = sh_type; |
2489 | else if (this_hdr->sh_type == SHT_NOBITS | |
2490 | && sh_type == SHT_PROGBITS | |
2491 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 2492 | { |
98ece1b3 AM |
2493 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
2494 | allow the link to proceed. This can happen when users link | |
2495 | non-bss input sections to bss output sections, or emit data | |
2496 | to a bss output section via a linker script. */ | |
2497 | (*_bfd_error_handler) | |
2498 | (_("section `%A' type changed to PROGBITS"), asect); | |
2499 | this_hdr->sh_type = sh_type; | |
3cddba1e L |
2500 | } |
2501 | ||
2f89ff8d | 2502 | switch (this_hdr->sh_type) |
252b5132 | 2503 | { |
2f89ff8d | 2504 | default: |
2f89ff8d L |
2505 | break; |
2506 | ||
2507 | case SHT_STRTAB: | |
2508 | case SHT_INIT_ARRAY: | |
2509 | case SHT_FINI_ARRAY: | |
2510 | case SHT_PREINIT_ARRAY: | |
2511 | case SHT_NOTE: | |
2512 | case SHT_NOBITS: | |
2513 | case SHT_PROGBITS: | |
2514 | break; | |
2515 | ||
2516 | case SHT_HASH: | |
c7ac6ff8 | 2517 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2518 | break; |
5de3bf90 | 2519 | |
2f89ff8d | 2520 | case SHT_DYNSYM: |
252b5132 | 2521 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2522 | break; |
2523 | ||
2524 | case SHT_DYNAMIC: | |
252b5132 | 2525 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2526 | break; |
2527 | ||
2528 | case SHT_RELA: | |
2529 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2530 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2531 | break; | |
2532 | ||
2533 | case SHT_REL: | |
2534 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2535 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2536 | break; | |
2537 | ||
2538 | case SHT_GNU_versym: | |
252b5132 | 2539 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2540 | break; |
2541 | ||
2542 | case SHT_GNU_verdef: | |
252b5132 RH |
2543 | this_hdr->sh_entsize = 0; |
2544 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2545 | cverdefs. The linker will set cverdefs, but sh_info will be |
2546 | zero. */ | |
252b5132 RH |
2547 | if (this_hdr->sh_info == 0) |
2548 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2549 | else | |
2550 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2551 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2552 | break; |
2553 | ||
2554 | case SHT_GNU_verneed: | |
252b5132 RH |
2555 | this_hdr->sh_entsize = 0; |
2556 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2557 | cverrefs. The linker will set cverrefs, but sh_info will be |
2558 | zero. */ | |
252b5132 RH |
2559 | if (this_hdr->sh_info == 0) |
2560 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2561 | else | |
2562 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2563 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2564 | break; |
2565 | ||
2566 | case SHT_GROUP: | |
1783205a | 2567 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2568 | break; |
fdc90cb4 JJ |
2569 | |
2570 | case SHT_GNU_HASH: | |
2571 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2572 | break; | |
dbb410c3 | 2573 | } |
252b5132 RH |
2574 | |
2575 | if ((asect->flags & SEC_ALLOC) != 0) | |
2576 | this_hdr->sh_flags |= SHF_ALLOC; | |
2577 | if ((asect->flags & SEC_READONLY) == 0) | |
2578 | this_hdr->sh_flags |= SHF_WRITE; | |
2579 | if ((asect->flags & SEC_CODE) != 0) | |
2580 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2581 | if ((asect->flags & SEC_MERGE) != 0) |
2582 | { | |
2583 | this_hdr->sh_flags |= SHF_MERGE; | |
2584 | this_hdr->sh_entsize = asect->entsize; | |
2585 | if ((asect->flags & SEC_STRINGS) != 0) | |
2586 | this_hdr->sh_flags |= SHF_STRINGS; | |
2587 | } | |
1126897b | 2588 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2589 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2590 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2591 | { |
2592 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2593 | if (asect->size == 0 |
2594 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2595 | { |
3a800eb9 | 2596 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2597 | |
704afa60 | 2598 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2599 | if (o != NULL) |
2600 | { | |
704afa60 | 2601 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2602 | if (this_hdr->sh_size != 0) |
2603 | this_hdr->sh_type = SHT_NOBITS; | |
2604 | } | |
704afa60 JJ |
2605 | } |
2606 | } | |
252b5132 RH |
2607 | |
2608 | /* Check for processor-specific section types. */ | |
0414f35b | 2609 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2610 | if (bed->elf_backend_fake_sections |
2611 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2612 | *failedptr = TRUE; |
252b5132 | 2613 | |
42bb2e33 | 2614 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2615 | { |
2616 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2617 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2618 | this_hdr->sh_type = sh_type; |
2619 | } | |
2620 | ||
252b5132 | 2621 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2622 | SHT_REL[A] section. If two relocation sections are required for |
2623 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2624 | create the other. */ |
23bc299b | 2625 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2626 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2627 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2628 | asect, |
68bfbfcc | 2629 | asect->use_rela_p)) |
b34976b6 | 2630 | *failedptr = TRUE; |
252b5132 RH |
2631 | } |
2632 | ||
dbb410c3 AM |
2633 | /* Fill in the contents of a SHT_GROUP section. */ |
2634 | ||
1126897b | 2635 | void |
217aa764 | 2636 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2637 | { |
217aa764 | 2638 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2639 | unsigned long symindx; |
9dce4196 | 2640 | asection *elt, *first; |
dbb410c3 | 2641 | unsigned char *loc; |
b34976b6 | 2642 | bfd_boolean gas; |
dbb410c3 | 2643 | |
7e4111ad L |
2644 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2645 | elfxx-ia64.c. */ | |
2646 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2647 | || *failedptr) |
2648 | return; | |
2649 | ||
1126897b AM |
2650 | symindx = 0; |
2651 | if (elf_group_id (sec) != NULL) | |
2652 | symindx = elf_group_id (sec)->udata.i; | |
2653 | ||
2654 | if (symindx == 0) | |
2655 | { | |
2656 | /* If called from the assembler, swap_out_syms will have set up | |
2657 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2658 | if (elf_section_syms (abfd) != NULL) | |
2659 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2660 | else | |
2661 | symindx = sec->target_index; | |
2662 | } | |
dbb410c3 AM |
2663 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2664 | ||
1126897b | 2665 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2666 | gas = TRUE; |
dbb410c3 AM |
2667 | if (sec->contents == NULL) |
2668 | { | |
b34976b6 | 2669 | gas = FALSE; |
eea6121a | 2670 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2671 | |
2672 | /* Arrange for the section to be written out. */ | |
2673 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2674 | if (sec->contents == NULL) |
2675 | { | |
b34976b6 | 2676 | *failedptr = TRUE; |
dbb410c3 AM |
2677 | return; |
2678 | } | |
2679 | } | |
2680 | ||
eea6121a | 2681 | loc = sec->contents + sec->size; |
dbb410c3 | 2682 | |
9dce4196 AM |
2683 | /* Get the pointer to the first section in the group that gas |
2684 | squirreled away here. objcopy arranges for this to be set to the | |
2685 | start of the input section group. */ | |
2686 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2687 | |
2688 | /* First element is a flag word. Rest of section is elf section | |
2689 | indices for all the sections of the group. Write them backwards | |
2690 | just to keep the group in the same order as given in .section | |
2691 | directives, not that it matters. */ | |
2692 | while (elt != NULL) | |
2693 | { | |
9dce4196 AM |
2694 | asection *s; |
2695 | unsigned int idx; | |
2696 | ||
dbb410c3 | 2697 | loc -= 4; |
9dce4196 AM |
2698 | s = elt; |
2699 | if (!gas) | |
2700 | s = s->output_section; | |
2701 | idx = 0; | |
2702 | if (s != NULL) | |
2703 | idx = elf_section_data (s)->this_idx; | |
2704 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2705 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2706 | if (elt == first) |
2707 | break; | |
dbb410c3 AM |
2708 | } |
2709 | ||
3d7f7666 | 2710 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2711 | abort (); |
dbb410c3 | 2712 | |
9dce4196 | 2713 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2714 | } |
2715 | ||
252b5132 RH |
2716 | /* Assign all ELF section numbers. The dummy first section is handled here |
2717 | too. The link/info pointers for the standard section types are filled | |
2718 | in here too, while we're at it. */ | |
2719 | ||
b34976b6 | 2720 | static bfd_boolean |
da9f89d4 | 2721 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2722 | { |
2723 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2724 | asection *sec; | |
2b0f7ef9 | 2725 | unsigned int section_number, secn; |
252b5132 | 2726 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2727 | struct bfd_elf_section_data *d; |
252b5132 RH |
2728 | |
2729 | section_number = 1; | |
2730 | ||
2b0f7ef9 JJ |
2731 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2732 | ||
da9f89d4 L |
2733 | /* SHT_GROUP sections are in relocatable files only. */ |
2734 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2735 | { |
da9f89d4 | 2736 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2737 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2738 | { |
5daa8fe7 | 2739 | d = elf_section_data (sec); |
da9f89d4 L |
2740 | |
2741 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2742 | { |
5daa8fe7 | 2743 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2744 | { |
2745 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2746 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2747 | abfd->section_count--; |
da9f89d4 | 2748 | } |
08a40648 | 2749 | else |
da9f89d4 L |
2750 | { |
2751 | if (section_number == SHN_LORESERVE) | |
2752 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2753 | d->this_idx = section_number++; | |
2754 | } | |
2755 | } | |
47cc2cf5 PB |
2756 | } |
2757 | } | |
2758 | ||
2759 | for (sec = abfd->sections; sec; sec = sec->next) | |
2760 | { | |
2761 | d = elf_section_data (sec); | |
2762 | ||
2763 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2764 | { | |
2765 | if (section_number == SHN_LORESERVE) | |
2766 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2767 | d->this_idx = section_number++; | |
2768 | } | |
2b0f7ef9 | 2769 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2770 | if ((sec->flags & SEC_RELOC) == 0) |
2771 | d->rel_idx = 0; | |
2772 | else | |
2b0f7ef9 | 2773 | { |
9ad5cbcf AM |
2774 | if (section_number == SHN_LORESERVE) |
2775 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2776 | d->rel_idx = section_number++; |
2777 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2778 | } | |
23bc299b MM |
2779 | |
2780 | if (d->rel_hdr2) | |
2b0f7ef9 | 2781 | { |
9ad5cbcf AM |
2782 | if (section_number == SHN_LORESERVE) |
2783 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2784 | d->rel_idx2 = section_number++; |
2785 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2786 | } | |
23bc299b MM |
2787 | else |
2788 | d->rel_idx2 = 0; | |
252b5132 RH |
2789 | } |
2790 | ||
9ad5cbcf AM |
2791 | if (section_number == SHN_LORESERVE) |
2792 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2793 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2794 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2795 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2796 | |
2797 | if (bfd_get_symcount (abfd) > 0) | |
2798 | { | |
9ad5cbcf AM |
2799 | if (section_number == SHN_LORESERVE) |
2800 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2801 | t->symtab_section = section_number++; |
2b0f7ef9 | 2802 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2803 | if (section_number > SHN_LORESERVE - 2) |
2804 | { | |
2805 | if (section_number == SHN_LORESERVE) | |
2806 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2807 | t->symtab_shndx_section = section_number++; | |
2808 | t->symtab_shndx_hdr.sh_name | |
2809 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2810 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2811 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2812 | return FALSE; |
9ad5cbcf AM |
2813 | } |
2814 | if (section_number == SHN_LORESERVE) | |
2815 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2816 | t->strtab_section = section_number++; |
2b0f7ef9 | 2817 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2818 | } |
2819 | ||
2b0f7ef9 JJ |
2820 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2821 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2822 | |
2823 | elf_numsections (abfd) = section_number; | |
252b5132 | 2824 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2825 | if (section_number > SHN_LORESERVE) |
2826 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2827 | |
2828 | /* Set up the list of section header pointers, in agreement with the | |
2829 | indices. */ | |
d0fb9a8d | 2830 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 2831 | if (i_shdrp == NULL) |
b34976b6 | 2832 | return FALSE; |
252b5132 | 2833 | |
d0fb9a8d | 2834 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
2835 | if (i_shdrp[0] == NULL) |
2836 | { | |
2837 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2838 | return FALSE; |
252b5132 | 2839 | } |
252b5132 RH |
2840 | |
2841 | elf_elfsections (abfd) = i_shdrp; | |
2842 | ||
2843 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2844 | if (bfd_get_symcount (abfd) > 0) | |
2845 | { | |
2846 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2847 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2848 | { | |
2849 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2850 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2851 | } | |
252b5132 RH |
2852 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2853 | t->symtab_hdr.sh_link = t->strtab_section; | |
2854 | } | |
38ce5b11 | 2855 | |
252b5132 RH |
2856 | for (sec = abfd->sections; sec; sec = sec->next) |
2857 | { | |
2858 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2859 | asection *s; | |
2860 | const char *name; | |
2861 | ||
2862 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2863 | if (d->rel_idx != 0) | |
2864 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2865 | if (d->rel_idx2 != 0) |
2866 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2867 | |
2868 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2869 | ||
2870 | /* sh_link of a reloc section is the section index of the symbol | |
2871 | table. sh_info is the section index of the section to which | |
2872 | the relocation entries apply. */ | |
2873 | if (d->rel_idx != 0) | |
2874 | { | |
2875 | d->rel_hdr.sh_link = t->symtab_section; | |
2876 | d->rel_hdr.sh_info = d->this_idx; | |
2877 | } | |
23bc299b MM |
2878 | if (d->rel_idx2 != 0) |
2879 | { | |
2880 | d->rel_hdr2->sh_link = t->symtab_section; | |
2881 | d->rel_hdr2->sh_info = d->this_idx; | |
2882 | } | |
252b5132 | 2883 | |
38ce5b11 L |
2884 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2885 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2886 | { | |
2887 | s = elf_linked_to_section (sec); | |
2888 | if (s) | |
38ce5b11 | 2889 | { |
f2876037 | 2890 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 2891 | if (link_info != NULL) |
38ce5b11 | 2892 | { |
f2876037 | 2893 | /* Check discarded linkonce section. */ |
ccd2ec6a | 2894 | if (elf_discarded_section (s)) |
38ce5b11 | 2895 | { |
ccd2ec6a L |
2896 | asection *kept; |
2897 | (*_bfd_error_handler) | |
2898 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2899 | abfd, d->this_hdr.bfd_section, | |
2900 | s, s->owner); | |
2901 | /* Point to the kept section if it has the same | |
2902 | size as the discarded one. */ | |
c0f00686 | 2903 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 2904 | if (kept == NULL) |
185d09ad | 2905 | { |
ccd2ec6a L |
2906 | bfd_set_error (bfd_error_bad_value); |
2907 | return FALSE; | |
185d09ad | 2908 | } |
ccd2ec6a | 2909 | s = kept; |
38ce5b11 | 2910 | } |
e424ecc8 | 2911 | |
ccd2ec6a L |
2912 | s = s->output_section; |
2913 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 2914 | } |
f2876037 L |
2915 | else |
2916 | { | |
2917 | /* Handle objcopy. */ | |
2918 | if (s->output_section == NULL) | |
2919 | { | |
2920 | (*_bfd_error_handler) | |
2921 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
2922 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
2923 | bfd_set_error (bfd_error_bad_value); | |
2924 | return FALSE; | |
2925 | } | |
2926 | s = s->output_section; | |
2927 | } | |
ccd2ec6a L |
2928 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
2929 | } | |
2930 | else | |
2931 | { | |
2932 | /* PR 290: | |
2933 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2934 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
2935 | sh_info fields. Hence we could get the situation | |
08a40648 | 2936 | where s is NULL. */ |
ccd2ec6a L |
2937 | const struct elf_backend_data *bed |
2938 | = get_elf_backend_data (abfd); | |
2939 | if (bed->link_order_error_handler) | |
2940 | bed->link_order_error_handler | |
2941 | (_("%B: warning: sh_link not set for section `%A'"), | |
2942 | abfd, sec); | |
38ce5b11 L |
2943 | } |
2944 | } | |
2945 | ||
252b5132 RH |
2946 | switch (d->this_hdr.sh_type) |
2947 | { | |
2948 | case SHT_REL: | |
2949 | case SHT_RELA: | |
2950 | /* A reloc section which we are treating as a normal BFD | |
2951 | section. sh_link is the section index of the symbol | |
2952 | table. sh_info is the section index of the section to | |
2953 | which the relocation entries apply. We assume that an | |
2954 | allocated reloc section uses the dynamic symbol table. | |
2955 | FIXME: How can we be sure? */ | |
2956 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2957 | if (s != NULL) | |
2958 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2959 | ||
2960 | /* We look up the section the relocs apply to by name. */ | |
2961 | name = sec->name; | |
2962 | if (d->this_hdr.sh_type == SHT_REL) | |
2963 | name += 4; | |
2964 | else | |
2965 | name += 5; | |
2966 | s = bfd_get_section_by_name (abfd, name); | |
2967 | if (s != NULL) | |
2968 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
2969 | break; | |
2970 | ||
2971 | case SHT_STRTAB: | |
2972 | /* We assume that a section named .stab*str is a stabs | |
2973 | string section. We look for a section with the same name | |
2974 | but without the trailing ``str'', and set its sh_link | |
2975 | field to point to this section. */ | |
0112cd26 | 2976 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
2977 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
2978 | { | |
2979 | size_t len; | |
2980 | char *alc; | |
2981 | ||
2982 | len = strlen (sec->name); | |
217aa764 | 2983 | alc = bfd_malloc (len - 2); |
252b5132 | 2984 | if (alc == NULL) |
b34976b6 | 2985 | return FALSE; |
d4c88bbb | 2986 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
2987 | alc[len - 3] = '\0'; |
2988 | s = bfd_get_section_by_name (abfd, alc); | |
2989 | free (alc); | |
2990 | if (s != NULL) | |
2991 | { | |
2992 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
2993 | ||
2994 | /* This is a .stab section. */ | |
0594c12d AM |
2995 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
2996 | elf_section_data (s)->this_hdr.sh_entsize | |
2997 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
2998 | } |
2999 | } | |
3000 | break; | |
3001 | ||
3002 | case SHT_DYNAMIC: | |
3003 | case SHT_DYNSYM: | |
3004 | case SHT_GNU_verneed: | |
3005 | case SHT_GNU_verdef: | |
3006 | /* sh_link is the section header index of the string table | |
3007 | used for the dynamic entries, or the symbol table, or the | |
3008 | version strings. */ | |
3009 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3010 | if (s != NULL) | |
3011 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3012 | break; | |
3013 | ||
7f1204bb JJ |
3014 | case SHT_GNU_LIBLIST: |
3015 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3016 | list used for the dynamic entries, or the symbol table, or |
3017 | the version strings. */ | |
7f1204bb JJ |
3018 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3019 | ? ".dynstr" : ".gnu.libstr"); | |
3020 | if (s != NULL) | |
3021 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3022 | break; | |
3023 | ||
252b5132 | 3024 | case SHT_HASH: |
fdc90cb4 | 3025 | case SHT_GNU_HASH: |
252b5132 RH |
3026 | case SHT_GNU_versym: |
3027 | /* sh_link is the section header index of the symbol table | |
3028 | this hash table or version table is for. */ | |
3029 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3030 | if (s != NULL) | |
3031 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3032 | break; | |
dbb410c3 AM |
3033 | |
3034 | case SHT_GROUP: | |
3035 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3036 | } |
3037 | } | |
3038 | ||
2b0f7ef9 | 3039 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3040 | if (i_shdrp[secn] == NULL) |
3041 | i_shdrp[secn] = i_shdrp[0]; | |
3042 | else | |
3043 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3044 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3045 | return TRUE; |
252b5132 RH |
3046 | } |
3047 | ||
3048 | /* Map symbol from it's internal number to the external number, moving | |
3049 | all local symbols to be at the head of the list. */ | |
3050 | ||
5372391b | 3051 | static bfd_boolean |
217aa764 | 3052 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3053 | { |
3054 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3055 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3056 | if (bed->elf_backend_sym_is_global) |
3057 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3058 | |
3059 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3060 | || bfd_is_und_section (bfd_get_section (sym)) | |
3061 | || bfd_is_com_section (bfd_get_section (sym))); | |
3062 | } | |
3063 | ||
5372391b AM |
3064 | /* Don't output section symbols for sections that are not going to be |
3065 | output. Also, don't output section symbols for reloc and other | |
3066 | special sections. */ | |
3067 | ||
3068 | static bfd_boolean | |
3069 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3070 | { | |
3071 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3072 | && (sym->value != 0 | |
3073 | || (sym->section->owner != abfd | |
3074 | && (sym->section->output_section->owner != abfd | |
3075 | || sym->section->output_offset != 0)))); | |
3076 | } | |
3077 | ||
b34976b6 | 3078 | static bfd_boolean |
217aa764 | 3079 | elf_map_symbols (bfd *abfd) |
252b5132 | 3080 | { |
dc810e39 | 3081 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3082 | asymbol **syms = bfd_get_outsymbols (abfd); |
3083 | asymbol **sect_syms; | |
dc810e39 AM |
3084 | unsigned int num_locals = 0; |
3085 | unsigned int num_globals = 0; | |
3086 | unsigned int num_locals2 = 0; | |
3087 | unsigned int num_globals2 = 0; | |
252b5132 | 3088 | int max_index = 0; |
dc810e39 | 3089 | unsigned int idx; |
252b5132 RH |
3090 | asection *asect; |
3091 | asymbol **new_syms; | |
252b5132 RH |
3092 | |
3093 | #ifdef DEBUG | |
3094 | fprintf (stderr, "elf_map_symbols\n"); | |
3095 | fflush (stderr); | |
3096 | #endif | |
3097 | ||
252b5132 RH |
3098 | for (asect = abfd->sections; asect; asect = asect->next) |
3099 | { | |
3100 | if (max_index < asect->index) | |
3101 | max_index = asect->index; | |
3102 | } | |
3103 | ||
3104 | max_index++; | |
d0fb9a8d | 3105 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3106 | if (sect_syms == NULL) |
b34976b6 | 3107 | return FALSE; |
252b5132 | 3108 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3109 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3110 | |
079e9a2f AM |
3111 | /* Init sect_syms entries for any section symbols we have already |
3112 | decided to output. */ | |
252b5132 RH |
3113 | for (idx = 0; idx < symcount; idx++) |
3114 | { | |
dc810e39 | 3115 | asymbol *sym = syms[idx]; |
c044fabd | 3116 | |
252b5132 | 3117 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3118 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3119 | { |
5372391b | 3120 | asection *sec = sym->section; |
252b5132 | 3121 | |
5372391b AM |
3122 | if (sec->owner != abfd) |
3123 | sec = sec->output_section; | |
252b5132 | 3124 | |
5372391b | 3125 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3126 | } |
3127 | } | |
3128 | ||
252b5132 RH |
3129 | /* Classify all of the symbols. */ |
3130 | for (idx = 0; idx < symcount; idx++) | |
3131 | { | |
5372391b AM |
3132 | if (ignore_section_sym (abfd, syms[idx])) |
3133 | continue; | |
252b5132 RH |
3134 | if (!sym_is_global (abfd, syms[idx])) |
3135 | num_locals++; | |
3136 | else | |
3137 | num_globals++; | |
3138 | } | |
079e9a2f | 3139 | |
5372391b | 3140 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3141 | sections will already have a section symbol in outsymbols, but |
3142 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3143 | at least in that case. */ | |
252b5132 RH |
3144 | for (asect = abfd->sections; asect; asect = asect->next) |
3145 | { | |
079e9a2f | 3146 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3147 | { |
079e9a2f | 3148 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3149 | num_locals++; |
3150 | else | |
3151 | num_globals++; | |
252b5132 RH |
3152 | } |
3153 | } | |
3154 | ||
3155 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3156 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3157 | |
252b5132 | 3158 | if (new_syms == NULL) |
b34976b6 | 3159 | return FALSE; |
252b5132 RH |
3160 | |
3161 | for (idx = 0; idx < symcount; idx++) | |
3162 | { | |
3163 | asymbol *sym = syms[idx]; | |
dc810e39 | 3164 | unsigned int i; |
252b5132 | 3165 | |
5372391b AM |
3166 | if (ignore_section_sym (abfd, sym)) |
3167 | continue; | |
252b5132 RH |
3168 | if (!sym_is_global (abfd, sym)) |
3169 | i = num_locals2++; | |
3170 | else | |
3171 | i = num_locals + num_globals2++; | |
3172 | new_syms[i] = sym; | |
3173 | sym->udata.i = i + 1; | |
3174 | } | |
3175 | for (asect = abfd->sections; asect; asect = asect->next) | |
3176 | { | |
079e9a2f | 3177 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3178 | { |
079e9a2f | 3179 | asymbol *sym = asect->symbol; |
dc810e39 | 3180 | unsigned int i; |
252b5132 | 3181 | |
079e9a2f | 3182 | sect_syms[asect->index] = sym; |
252b5132 RH |
3183 | if (!sym_is_global (abfd, sym)) |
3184 | i = num_locals2++; | |
3185 | else | |
3186 | i = num_locals + num_globals2++; | |
3187 | new_syms[i] = sym; | |
3188 | sym->udata.i = i + 1; | |
3189 | } | |
3190 | } | |
3191 | ||
3192 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3193 | ||
3194 | elf_num_locals (abfd) = num_locals; | |
3195 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3196 | return TRUE; |
252b5132 RH |
3197 | } |
3198 | ||
3199 | /* Align to the maximum file alignment that could be required for any | |
3200 | ELF data structure. */ | |
3201 | ||
268b6b39 | 3202 | static inline file_ptr |
217aa764 | 3203 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3204 | { |
3205 | return (off + align - 1) & ~(align - 1); | |
3206 | } | |
3207 | ||
3208 | /* Assign a file position to a section, optionally aligning to the | |
3209 | required section alignment. */ | |
3210 | ||
217aa764 AM |
3211 | file_ptr |
3212 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3213 | file_ptr offset, | |
3214 | bfd_boolean align) | |
252b5132 RH |
3215 | { |
3216 | if (align) | |
3217 | { | |
3218 | unsigned int al; | |
3219 | ||
3220 | al = i_shdrp->sh_addralign; | |
3221 | if (al > 1) | |
3222 | offset = BFD_ALIGN (offset, al); | |
3223 | } | |
3224 | i_shdrp->sh_offset = offset; | |
3225 | if (i_shdrp->bfd_section != NULL) | |
3226 | i_shdrp->bfd_section->filepos = offset; | |
3227 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3228 | offset += i_shdrp->sh_size; | |
3229 | return offset; | |
3230 | } | |
3231 | ||
3232 | /* Compute the file positions we are going to put the sections at, and | |
3233 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3234 | is not NULL, this is being called by the ELF backend linker. */ | |
3235 | ||
b34976b6 | 3236 | bfd_boolean |
217aa764 AM |
3237 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3238 | struct bfd_link_info *link_info) | |
252b5132 | 3239 | { |
9c5bfbb7 | 3240 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3241 | bfd_boolean failed; |
4b6c0f2f | 3242 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3243 | Elf_Internal_Shdr *shstrtab_hdr; |
3244 | ||
3245 | if (abfd->output_has_begun) | |
b34976b6 | 3246 | return TRUE; |
252b5132 RH |
3247 | |
3248 | /* Do any elf backend specific processing first. */ | |
3249 | if (bed->elf_backend_begin_write_processing) | |
3250 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3251 | ||
3252 | if (! prep_headers (abfd)) | |
b34976b6 | 3253 | return FALSE; |
252b5132 | 3254 | |
e6c51ed4 NC |
3255 | /* Post process the headers if necessary. */ |
3256 | if (bed->elf_backend_post_process_headers) | |
3257 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3258 | ||
b34976b6 | 3259 | failed = FALSE; |
252b5132 RH |
3260 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3261 | if (failed) | |
b34976b6 | 3262 | return FALSE; |
252b5132 | 3263 | |
da9f89d4 | 3264 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3265 | return FALSE; |
252b5132 RH |
3266 | |
3267 | /* The backend linker builds symbol table information itself. */ | |
3268 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3269 | { | |
3270 | /* Non-zero if doing a relocatable link. */ | |
3271 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3272 | ||
3273 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3274 | return FALSE; |
252b5132 RH |
3275 | } |
3276 | ||
1126897b | 3277 | if (link_info == NULL) |
dbb410c3 | 3278 | { |
1126897b | 3279 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3280 | if (failed) |
b34976b6 | 3281 | return FALSE; |
dbb410c3 AM |
3282 | } |
3283 | ||
252b5132 RH |
3284 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3285 | /* sh_name was set in prep_headers. */ | |
3286 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3287 | shstrtab_hdr->sh_flags = 0; | |
3288 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3289 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3290 | shstrtab_hdr->sh_entsize = 0; |
3291 | shstrtab_hdr->sh_link = 0; | |
3292 | shstrtab_hdr->sh_info = 0; | |
3293 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3294 | shstrtab_hdr->sh_addralign = 1; | |
3295 | ||
c84fca4d | 3296 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3297 | return FALSE; |
252b5132 RH |
3298 | |
3299 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3300 | { | |
3301 | file_ptr off; | |
3302 | Elf_Internal_Shdr *hdr; | |
3303 | ||
3304 | off = elf_tdata (abfd)->next_file_pos; | |
3305 | ||
3306 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3307 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3308 | |
9ad5cbcf AM |
3309 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3310 | if (hdr->sh_size != 0) | |
b34976b6 | 3311 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3312 | |
252b5132 | 3313 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3314 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3315 | |
3316 | elf_tdata (abfd)->next_file_pos = off; | |
3317 | ||
3318 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3319 | out. */ |
252b5132 RH |
3320 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3321 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3322 | return FALSE; |
252b5132 RH |
3323 | _bfd_stringtab_free (strtab); |
3324 | } | |
3325 | ||
b34976b6 | 3326 | abfd->output_has_begun = TRUE; |
252b5132 | 3327 | |
b34976b6 | 3328 | return TRUE; |
252b5132 RH |
3329 | } |
3330 | ||
8ded5a0f AM |
3331 | /* Make an initial estimate of the size of the program header. If we |
3332 | get the number wrong here, we'll redo section placement. */ | |
3333 | ||
3334 | static bfd_size_type | |
3335 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3336 | { | |
3337 | size_t segs; | |
3338 | asection *s; | |
2b05f1b7 | 3339 | const struct elf_backend_data *bed; |
8ded5a0f AM |
3340 | |
3341 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3342 | and one for data. */ | |
3343 | segs = 2; | |
3344 | ||
3345 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3346 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3347 | { | |
3348 | /* If we have a loadable interpreter section, we need a | |
3349 | PT_INTERP segment. In this case, assume we also need a | |
3350 | PT_PHDR segment, although that may not be true for all | |
3351 | targets. */ | |
3352 | segs += 2; | |
3353 | } | |
3354 | ||
3355 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3356 | { | |
3357 | /* We need a PT_DYNAMIC segment. */ | |
3358 | ++segs; | |
08a40648 | 3359 | |
c9df6640 L |
3360 | if (elf_tdata (abfd)->relro) |
3361 | { | |
3362 | /* We need a PT_GNU_RELRO segment only when there is a | |
3363 | PT_DYNAMIC segment. */ | |
3364 | ++segs; | |
3365 | } | |
8ded5a0f AM |
3366 | } |
3367 | ||
3368 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3369 | { | |
3370 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3371 | ++segs; | |
3372 | } | |
3373 | ||
2b05f1b7 | 3374 | if (elf_tdata (abfd)->stack_flags) |
8ded5a0f | 3375 | { |
2b05f1b7 L |
3376 | /* We need a PT_GNU_STACK segment. */ |
3377 | ++segs; | |
3378 | } | |
94b11780 | 3379 | |
2b05f1b7 L |
3380 | for (s = abfd->sections; s != NULL; s = s->next) |
3381 | { | |
8ded5a0f | 3382 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 3383 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3384 | { |
3385 | /* We need a PT_NOTE segment. */ | |
3386 | ++segs; | |
1c5265b5 JJ |
3387 | /* Try to create just one PT_NOTE segment |
3388 | for all adjacent loadable .note* sections. | |
3389 | gABI requires that within a PT_NOTE segment | |
3390 | (and also inside of each SHT_NOTE section) | |
3391 | each note is padded to a multiple of 4 size, | |
3392 | so we check whether the sections are correctly | |
3393 | aligned. */ | |
3394 | if (s->alignment_power == 2) | |
3395 | while (s->next != NULL | |
3396 | && s->next->alignment_power == 2 | |
3397 | && (s->next->flags & SEC_LOAD) != 0 | |
3398 | && CONST_STRNEQ (s->next->name, ".note")) | |
3399 | s = s->next; | |
8ded5a0f AM |
3400 | } |
3401 | } | |
3402 | ||
3403 | for (s = abfd->sections; s != NULL; s = s->next) | |
3404 | { | |
3405 | if (s->flags & SEC_THREAD_LOCAL) | |
3406 | { | |
3407 | /* We need a PT_TLS segment. */ | |
3408 | ++segs; | |
3409 | break; | |
3410 | } | |
3411 | } | |
3412 | ||
3413 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 3414 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
3415 | if (bed->elf_backend_additional_program_headers) |
3416 | { | |
3417 | int a; | |
3418 | ||
3419 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3420 | if (a == -1) | |
3421 | abort (); | |
3422 | segs += a; | |
3423 | } | |
3424 | ||
3425 | return segs * bed->s->sizeof_phdr; | |
3426 | } | |
3427 | ||
252b5132 RH |
3428 | /* Create a mapping from a set of sections to a program segment. */ |
3429 | ||
217aa764 AM |
3430 | static struct elf_segment_map * |
3431 | make_mapping (bfd *abfd, | |
3432 | asection **sections, | |
3433 | unsigned int from, | |
3434 | unsigned int to, | |
3435 | bfd_boolean phdr) | |
252b5132 RH |
3436 | { |
3437 | struct elf_segment_map *m; | |
3438 | unsigned int i; | |
3439 | asection **hdrpp; | |
dc810e39 | 3440 | bfd_size_type amt; |
252b5132 | 3441 | |
dc810e39 AM |
3442 | amt = sizeof (struct elf_segment_map); |
3443 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3444 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3445 | if (m == NULL) |
3446 | return NULL; | |
3447 | m->next = NULL; | |
3448 | m->p_type = PT_LOAD; | |
3449 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3450 | m->sections[i - from] = *hdrpp; | |
3451 | m->count = to - from; | |
3452 | ||
3453 | if (from == 0 && phdr) | |
3454 | { | |
3455 | /* Include the headers in the first PT_LOAD segment. */ | |
3456 | m->includes_filehdr = 1; | |
3457 | m->includes_phdrs = 1; | |
3458 | } | |
3459 | ||
3460 | return m; | |
3461 | } | |
3462 | ||
229fcec5 MM |
3463 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3464 | on failure. */ | |
3465 | ||
3466 | struct elf_segment_map * | |
3467 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3468 | { | |
3469 | struct elf_segment_map *m; | |
3470 | ||
3471 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3472 | if (m == NULL) | |
3473 | return NULL; | |
3474 | m->next = NULL; | |
3475 | m->p_type = PT_DYNAMIC; | |
3476 | m->count = 1; | |
3477 | m->sections[0] = dynsec; | |
08a40648 | 3478 | |
229fcec5 MM |
3479 | return m; |
3480 | } | |
3481 | ||
8ded5a0f | 3482 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3483 | |
b34976b6 | 3484 | static bfd_boolean |
3dea8fca AM |
3485 | elf_modify_segment_map (bfd *abfd, |
3486 | struct bfd_link_info *info, | |
3487 | bfd_boolean remove_empty_load) | |
252b5132 | 3488 | { |
252e386e | 3489 | struct elf_segment_map **m; |
8ded5a0f | 3490 | const struct elf_backend_data *bed; |
252b5132 | 3491 | |
8ded5a0f AM |
3492 | /* The placement algorithm assumes that non allocated sections are |
3493 | not in PT_LOAD segments. We ensure this here by removing such | |
3494 | sections from the segment map. We also remove excluded | |
252e386e AM |
3495 | sections. Finally, any PT_LOAD segment without sections is |
3496 | removed. */ | |
3497 | m = &elf_tdata (abfd)->segment_map; | |
3498 | while (*m) | |
8ded5a0f AM |
3499 | { |
3500 | unsigned int i, new_count; | |
252b5132 | 3501 | |
252e386e | 3502 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3503 | { |
252e386e AM |
3504 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3505 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3506 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3507 | { |
252e386e AM |
3508 | (*m)->sections[new_count] = (*m)->sections[i]; |
3509 | new_count++; | |
8ded5a0f AM |
3510 | } |
3511 | } | |
252e386e | 3512 | (*m)->count = new_count; |
252b5132 | 3513 | |
3dea8fca | 3514 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
3515 | *m = (*m)->next; |
3516 | else | |
3517 | m = &(*m)->next; | |
8ded5a0f | 3518 | } |
252b5132 | 3519 | |
8ded5a0f AM |
3520 | bed = get_elf_backend_data (abfd); |
3521 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3522 | { |
252e386e | 3523 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3524 | return FALSE; |
252b5132 | 3525 | } |
252b5132 | 3526 | |
8ded5a0f AM |
3527 | return TRUE; |
3528 | } | |
252b5132 | 3529 | |
8ded5a0f | 3530 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3531 | |
8ded5a0f AM |
3532 | bfd_boolean |
3533 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3534 | { | |
3535 | unsigned int count; | |
3536 | struct elf_segment_map *m; | |
3537 | asection **sections = NULL; | |
3538 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 3539 | bfd_boolean no_user_phdrs; |
252b5132 | 3540 | |
3dea8fca AM |
3541 | no_user_phdrs = elf_tdata (abfd)->segment_map == NULL; |
3542 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) | |
252b5132 | 3543 | { |
8ded5a0f AM |
3544 | asection *s; |
3545 | unsigned int i; | |
3546 | struct elf_segment_map *mfirst; | |
3547 | struct elf_segment_map **pm; | |
3548 | asection *last_hdr; | |
3549 | bfd_vma last_size; | |
3550 | unsigned int phdr_index; | |
3551 | bfd_vma maxpagesize; | |
3552 | asection **hdrpp; | |
3553 | bfd_boolean phdr_in_segment = TRUE; | |
3554 | bfd_boolean writable; | |
3555 | int tls_count = 0; | |
3556 | asection *first_tls = NULL; | |
3557 | asection *dynsec, *eh_frame_hdr; | |
3558 | bfd_size_type amt; | |
252b5132 | 3559 | |
8ded5a0f | 3560 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3561 | |
8ded5a0f AM |
3562 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3563 | if (sections == NULL) | |
252b5132 | 3564 | goto error_return; |
252b5132 | 3565 | |
8ded5a0f AM |
3566 | i = 0; |
3567 | for (s = abfd->sections; s != NULL; s = s->next) | |
3568 | { | |
3569 | if ((s->flags & SEC_ALLOC) != 0) | |
3570 | { | |
3571 | sections[i] = s; | |
3572 | ++i; | |
3573 | } | |
3574 | } | |
3575 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3576 | count = i; | |
252b5132 | 3577 | |
8ded5a0f | 3578 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3579 | |
8ded5a0f | 3580 | /* Build the mapping. */ |
252b5132 | 3581 | |
8ded5a0f AM |
3582 | mfirst = NULL; |
3583 | pm = &mfirst; | |
252b5132 | 3584 | |
8ded5a0f AM |
3585 | /* If we have a .interp section, then create a PT_PHDR segment for |
3586 | the program headers and a PT_INTERP segment for the .interp | |
3587 | section. */ | |
3588 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3589 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3590 | { | |
3591 | amt = sizeof (struct elf_segment_map); | |
3592 | m = bfd_zalloc (abfd, amt); | |
3593 | if (m == NULL) | |
3594 | goto error_return; | |
3595 | m->next = NULL; | |
3596 | m->p_type = PT_PHDR; | |
3597 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3598 | m->p_flags = PF_R | PF_X; | |
3599 | m->p_flags_valid = 1; | |
3600 | m->includes_phdrs = 1; | |
252b5132 | 3601 | |
8ded5a0f AM |
3602 | *pm = m; |
3603 | pm = &m->next; | |
252b5132 | 3604 | |
8ded5a0f AM |
3605 | amt = sizeof (struct elf_segment_map); |
3606 | m = bfd_zalloc (abfd, amt); | |
3607 | if (m == NULL) | |
3608 | goto error_return; | |
3609 | m->next = NULL; | |
3610 | m->p_type = PT_INTERP; | |
3611 | m->count = 1; | |
3612 | m->sections[0] = s; | |
3613 | ||
3614 | *pm = m; | |
3615 | pm = &m->next; | |
252b5132 | 3616 | } |
8ded5a0f AM |
3617 | |
3618 | /* Look through the sections. We put sections in the same program | |
3619 | segment when the start of the second section can be placed within | |
3620 | a few bytes of the end of the first section. */ | |
3621 | last_hdr = NULL; | |
3622 | last_size = 0; | |
3623 | phdr_index = 0; | |
3624 | maxpagesize = bed->maxpagesize; | |
3625 | writable = FALSE; | |
3626 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3627 | if (dynsec != NULL | |
3628 | && (dynsec->flags & SEC_LOAD) == 0) | |
3629 | dynsec = NULL; | |
3630 | ||
3631 | /* Deal with -Ttext or something similar such that the first section | |
3632 | is not adjacent to the program headers. This is an | |
3633 | approximation, since at this point we don't know exactly how many | |
3634 | program headers we will need. */ | |
3635 | if (count > 0) | |
252b5132 | 3636 | { |
8ded5a0f AM |
3637 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3638 | ||
62d7a5f6 | 3639 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3640 | phdr_size = get_program_header_size (abfd, info); |
3641 | if ((abfd->flags & D_PAGED) == 0 | |
3642 | || sections[0]->lma < phdr_size | |
3643 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3644 | phdr_in_segment = FALSE; | |
252b5132 RH |
3645 | } |
3646 | ||
8ded5a0f | 3647 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3648 | { |
8ded5a0f AM |
3649 | asection *hdr; |
3650 | bfd_boolean new_segment; | |
3651 | ||
3652 | hdr = *hdrpp; | |
3653 | ||
3654 | /* See if this section and the last one will fit in the same | |
3655 | segment. */ | |
3656 | ||
3657 | if (last_hdr == NULL) | |
3658 | { | |
3659 | /* If we don't have a segment yet, then we don't need a new | |
3660 | one (we build the last one after this loop). */ | |
3661 | new_segment = FALSE; | |
3662 | } | |
3663 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3664 | { | |
3665 | /* If this section has a different relation between the | |
3666 | virtual address and the load address, then we need a new | |
3667 | segment. */ | |
3668 | new_segment = TRUE; | |
3669 | } | |
3670 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3671 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3672 | { | |
3673 | /* If putting this section in this segment would force us to | |
3674 | skip a page in the segment, then we need a new segment. */ | |
3675 | new_segment = TRUE; | |
3676 | } | |
3677 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3678 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3679 | { | |
3680 | /* We don't want to put a loadable section after a | |
3681 | nonloadable section in the same segment. | |
3682 | Consider .tbss sections as loadable for this purpose. */ | |
3683 | new_segment = TRUE; | |
3684 | } | |
3685 | else if ((abfd->flags & D_PAGED) == 0) | |
3686 | { | |
3687 | /* If the file is not demand paged, which means that we | |
3688 | don't require the sections to be correctly aligned in the | |
3689 | file, then there is no other reason for a new segment. */ | |
3690 | new_segment = FALSE; | |
3691 | } | |
3692 | else if (! writable | |
3693 | && (hdr->flags & SEC_READONLY) == 0 | |
3694 | && (((last_hdr->lma + last_size - 1) | |
3695 | & ~(maxpagesize - 1)) | |
3696 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3697 | { | |
3698 | /* We don't want to put a writable section in a read only | |
3699 | segment, unless they are on the same page in memory | |
3700 | anyhow. We already know that the last section does not | |
3701 | bring us past the current section on the page, so the | |
3702 | only case in which the new section is not on the same | |
3703 | page as the previous section is when the previous section | |
3704 | ends precisely on a page boundary. */ | |
3705 | new_segment = TRUE; | |
3706 | } | |
3707 | else | |
3708 | { | |
3709 | /* Otherwise, we can use the same segment. */ | |
3710 | new_segment = FALSE; | |
3711 | } | |
3712 | ||
2889e75b NC |
3713 | /* Allow interested parties a chance to override our decision. */ |
3714 | if (last_hdr && info->callbacks->override_segment_assignment) | |
3715 | new_segment = info->callbacks->override_segment_assignment (info, abfd, hdr, last_hdr, new_segment); | |
3716 | ||
8ded5a0f AM |
3717 | if (! new_segment) |
3718 | { | |
3719 | if ((hdr->flags & SEC_READONLY) == 0) | |
3720 | writable = TRUE; | |
3721 | last_hdr = hdr; | |
3722 | /* .tbss sections effectively have zero size. */ | |
3723 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3724 | != SEC_THREAD_LOCAL) | |
3725 | last_size = hdr->size; | |
3726 | else | |
3727 | last_size = 0; | |
3728 | continue; | |
3729 | } | |
3730 | ||
3731 | /* We need a new program segment. We must create a new program | |
3732 | header holding all the sections from phdr_index until hdr. */ | |
3733 | ||
3734 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3735 | if (m == NULL) | |
3736 | goto error_return; | |
3737 | ||
3738 | *pm = m; | |
3739 | pm = &m->next; | |
3740 | ||
252b5132 | 3741 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3742 | writable = TRUE; |
8ded5a0f AM |
3743 | else |
3744 | writable = FALSE; | |
3745 | ||
baaff79e JJ |
3746 | last_hdr = hdr; |
3747 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3748 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3749 | last_size = hdr->size; |
baaff79e JJ |
3750 | else |
3751 | last_size = 0; | |
8ded5a0f AM |
3752 | phdr_index = i; |
3753 | phdr_in_segment = FALSE; | |
252b5132 RH |
3754 | } |
3755 | ||
8ded5a0f AM |
3756 | /* Create a final PT_LOAD program segment. */ |
3757 | if (last_hdr != NULL) | |
3758 | { | |
3759 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3760 | if (m == NULL) | |
3761 | goto error_return; | |
252b5132 | 3762 | |
8ded5a0f AM |
3763 | *pm = m; |
3764 | pm = &m->next; | |
3765 | } | |
252b5132 | 3766 | |
8ded5a0f AM |
3767 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3768 | if (dynsec != NULL) | |
3769 | { | |
3770 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3771 | if (m == NULL) | |
3772 | goto error_return; | |
3773 | *pm = m; | |
3774 | pm = &m->next; | |
3775 | } | |
252b5132 | 3776 | |
1c5265b5 JJ |
3777 | /* For each batch of consecutive loadable .note sections, |
3778 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
3779 | because if we link together nonloadable .note sections and | |
3780 | loadable .note sections, we will generate two .note sections | |
3781 | in the output file. FIXME: Using names for section types is | |
3782 | bogus anyhow. */ | |
8ded5a0f AM |
3783 | for (s = abfd->sections; s != NULL; s = s->next) |
3784 | { | |
3785 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3786 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 3787 | { |
1c5265b5 JJ |
3788 | asection *s2; |
3789 | unsigned count = 1; | |
8ded5a0f | 3790 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
3791 | if (s->alignment_power == 2) |
3792 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
3793 | { |
3794 | if (s2->next->alignment_power == 2 | |
3795 | && (s2->next->flags & SEC_LOAD) != 0 | |
3796 | && CONST_STRNEQ (s2->next->name, ".note") | |
3797 | && align_power (s2->vma + s2->size, 2) | |
3798 | == s2->next->vma) | |
3799 | count++; | |
3800 | else | |
3801 | break; | |
3802 | } | |
1c5265b5 | 3803 | amt += (count - 1) * sizeof (asection *); |
8ded5a0f AM |
3804 | m = bfd_zalloc (abfd, amt); |
3805 | if (m == NULL) | |
3806 | goto error_return; | |
3807 | m->next = NULL; | |
3808 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
3809 | m->count = count; |
3810 | while (count > 1) | |
3811 | { | |
3812 | m->sections[m->count - count--] = s; | |
3813 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
3814 | s = s->next; | |
3815 | } | |
3816 | m->sections[m->count - 1] = s; | |
3817 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
3818 | *pm = m; |
3819 | pm = &m->next; | |
3820 | } | |
3821 | if (s->flags & SEC_THREAD_LOCAL) | |
3822 | { | |
3823 | if (! tls_count) | |
3824 | first_tls = s; | |
3825 | tls_count++; | |
3826 | } | |
3827 | } | |
252b5132 | 3828 | |
8ded5a0f AM |
3829 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
3830 | if (tls_count > 0) | |
3831 | { | |
3832 | int i; | |
252b5132 | 3833 | |
8ded5a0f AM |
3834 | amt = sizeof (struct elf_segment_map); |
3835 | amt += (tls_count - 1) * sizeof (asection *); | |
3836 | m = bfd_zalloc (abfd, amt); | |
3837 | if (m == NULL) | |
3838 | goto error_return; | |
3839 | m->next = NULL; | |
3840 | m->p_type = PT_TLS; | |
3841 | m->count = tls_count; | |
3842 | /* Mandated PF_R. */ | |
3843 | m->p_flags = PF_R; | |
3844 | m->p_flags_valid = 1; | |
3845 | for (i = 0; i < tls_count; ++i) | |
3846 | { | |
3847 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3848 | m->sections[i] = first_tls; | |
3849 | first_tls = first_tls->next; | |
3850 | } | |
252b5132 | 3851 | |
8ded5a0f AM |
3852 | *pm = m; |
3853 | pm = &m->next; | |
3854 | } | |
252b5132 | 3855 | |
8ded5a0f AM |
3856 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3857 | segment. */ | |
3858 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
3859 | if (eh_frame_hdr != NULL | |
3860 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 3861 | { |
dc810e39 | 3862 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3863 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3864 | if (m == NULL) |
3865 | goto error_return; | |
3866 | m->next = NULL; | |
8ded5a0f | 3867 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 3868 | m->count = 1; |
8ded5a0f | 3869 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
3870 | |
3871 | *pm = m; | |
3872 | pm = &m->next; | |
3873 | } | |
13ae64f3 | 3874 | |
8ded5a0f | 3875 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 3876 | { |
8ded5a0f AM |
3877 | amt = sizeof (struct elf_segment_map); |
3878 | m = bfd_zalloc (abfd, amt); | |
3879 | if (m == NULL) | |
3880 | goto error_return; | |
3881 | m->next = NULL; | |
2b05f1b7 | 3882 | m->p_type = PT_GNU_STACK; |
8ded5a0f AM |
3883 | m->p_flags = elf_tdata (abfd)->stack_flags; |
3884 | m->p_flags_valid = 1; | |
252b5132 | 3885 | |
8ded5a0f AM |
3886 | *pm = m; |
3887 | pm = &m->next; | |
3888 | } | |
65765700 | 3889 | |
c9df6640 | 3890 | if (dynsec != NULL && elf_tdata (abfd)->relro) |
8ded5a0f | 3891 | { |
c9df6640 L |
3892 | /* We make a PT_GNU_RELRO segment only when there is a |
3893 | PT_DYNAMIC segment. */ | |
8ded5a0f AM |
3894 | amt = sizeof (struct elf_segment_map); |
3895 | m = bfd_zalloc (abfd, amt); | |
3896 | if (m == NULL) | |
3897 | goto error_return; | |
3898 | m->next = NULL; | |
3899 | m->p_type = PT_GNU_RELRO; | |
3900 | m->p_flags = PF_R; | |
3901 | m->p_flags_valid = 1; | |
65765700 | 3902 | |
8ded5a0f AM |
3903 | *pm = m; |
3904 | pm = &m->next; | |
3905 | } | |
9ee5e499 | 3906 | |
8ded5a0f AM |
3907 | free (sections); |
3908 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
3909 | } |
3910 | ||
3dea8fca | 3911 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 3912 | return FALSE; |
8c37241b | 3913 | |
8ded5a0f AM |
3914 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
3915 | ++count; | |
3916 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 3917 | |
b34976b6 | 3918 | return TRUE; |
252b5132 RH |
3919 | |
3920 | error_return: | |
3921 | if (sections != NULL) | |
3922 | free (sections); | |
b34976b6 | 3923 | return FALSE; |
252b5132 RH |
3924 | } |
3925 | ||
3926 | /* Sort sections by address. */ | |
3927 | ||
3928 | static int | |
217aa764 | 3929 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3930 | { |
3931 | const asection *sec1 = *(const asection **) arg1; | |
3932 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3933 | bfd_size_type size1, size2; |
252b5132 RH |
3934 | |
3935 | /* Sort by LMA first, since this is the address used to | |
3936 | place the section into a segment. */ | |
3937 | if (sec1->lma < sec2->lma) | |
3938 | return -1; | |
3939 | else if (sec1->lma > sec2->lma) | |
3940 | return 1; | |
3941 | ||
3942 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3943 | the same, and this will do nothing. */ | |
3944 | if (sec1->vma < sec2->vma) | |
3945 | return -1; | |
3946 | else if (sec1->vma > sec2->vma) | |
3947 | return 1; | |
3948 | ||
3949 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3950 | ||
07c6e936 | 3951 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3952 | |
3953 | if (TOEND (sec1)) | |
3954 | { | |
3955 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3956 | { |
3957 | /* If the indicies are the same, do not return 0 | |
3958 | here, but continue to try the next comparison. */ | |
3959 | if (sec1->target_index - sec2->target_index != 0) | |
3960 | return sec1->target_index - sec2->target_index; | |
3961 | } | |
252b5132 RH |
3962 | else |
3963 | return 1; | |
3964 | } | |
00a7cdc5 | 3965 | else if (TOEND (sec2)) |
252b5132 RH |
3966 | return -1; |
3967 | ||
3968 | #undef TOEND | |
3969 | ||
00a7cdc5 NC |
3970 | /* Sort by size, to put zero sized sections |
3971 | before others at the same address. */ | |
252b5132 | 3972 | |
eea6121a AM |
3973 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3974 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3975 | |
3976 | if (size1 < size2) | |
252b5132 | 3977 | return -1; |
eecdbe52 | 3978 | if (size1 > size2) |
252b5132 RH |
3979 | return 1; |
3980 | ||
3981 | return sec1->target_index - sec2->target_index; | |
3982 | } | |
3983 | ||
340b6d91 AC |
3984 | /* Ian Lance Taylor writes: |
3985 | ||
3986 | We shouldn't be using % with a negative signed number. That's just | |
3987 | not good. We have to make sure either that the number is not | |
3988 | negative, or that the number has an unsigned type. When the types | |
3989 | are all the same size they wind up as unsigned. When file_ptr is a | |
3990 | larger signed type, the arithmetic winds up as signed long long, | |
3991 | which is wrong. | |
3992 | ||
3993 | What we're trying to say here is something like ``increase OFF by | |
3994 | the least amount that will cause it to be equal to the VMA modulo | |
3995 | the page size.'' */ | |
3996 | /* In other words, something like: | |
3997 | ||
3998 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
3999 | off_offset = off % bed->maxpagesize; | |
4000 | if (vma_offset < off_offset) | |
4001 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4002 | else | |
4003 | adjustment = vma_offset - off_offset; | |
08a40648 | 4004 | |
340b6d91 AC |
4005 | which can can be collapsed into the expression below. */ |
4006 | ||
4007 | static file_ptr | |
4008 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4009 | { | |
4010 | return ((vma - off) % maxpagesize); | |
4011 | } | |
4012 | ||
6d33f217 L |
4013 | static void |
4014 | print_segment_map (const struct elf_segment_map *m) | |
4015 | { | |
4016 | unsigned int j; | |
4017 | const char *pt = get_segment_type (m->p_type); | |
4018 | char buf[32]; | |
4019 | ||
4020 | if (pt == NULL) | |
4021 | { | |
4022 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4023 | sprintf (buf, "LOPROC+%7.7x", | |
4024 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4025 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4026 | sprintf (buf, "LOOS+%7.7x", | |
4027 | (unsigned int) (m->p_type - PT_LOOS)); | |
4028 | else | |
4029 | snprintf (buf, sizeof (buf), "%8.8x", | |
4030 | (unsigned int) m->p_type); | |
4031 | pt = buf; | |
4032 | } | |
4033 | fprintf (stderr, "%s:", pt); | |
4034 | for (j = 0; j < m->count; j++) | |
4035 | fprintf (stderr, " %s", m->sections [j]->name); | |
4036 | putc ('\n',stderr); | |
4037 | } | |
4038 | ||
252b5132 RH |
4039 | /* Assign file positions to the sections based on the mapping from |
4040 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4041 | the file header. */ |
252b5132 | 4042 | |
b34976b6 | 4043 | static bfd_boolean |
f3520d2f AM |
4044 | assign_file_positions_for_load_sections (bfd *abfd, |
4045 | struct bfd_link_info *link_info) | |
252b5132 RH |
4046 | { |
4047 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4048 | struct elf_segment_map *m; |
252b5132 | 4049 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4050 | Elf_Internal_Phdr *p; |
02bf8d82 | 4051 | file_ptr off; |
3f570048 | 4052 | bfd_size_type maxpagesize; |
f3520d2f | 4053 | unsigned int alloc; |
0920dee7 | 4054 | unsigned int i, j; |
252b5132 | 4055 | |
e36284ab | 4056 | if (link_info == NULL |
3dea8fca | 4057 | && !elf_modify_segment_map (abfd, link_info, FALSE)) |
8ded5a0f | 4058 | return FALSE; |
252b5132 | 4059 | |
8ded5a0f | 4060 | alloc = 0; |
252b5132 | 4061 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4062 | ++alloc; |
252b5132 RH |
4063 | |
4064 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4065 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4066 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4067 | |
62d7a5f6 | 4068 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4069 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4070 | else | |
4071 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4072 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4073 | |
4074 | if (alloc == 0) | |
f3520d2f | 4075 | { |
8ded5a0f AM |
4076 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4077 | return TRUE; | |
f3520d2f | 4078 | } |
252b5132 | 4079 | |
d0fb9a8d | 4080 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4081 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4082 | if (phdrs == NULL) |
b34976b6 | 4083 | return FALSE; |
252b5132 | 4084 | |
3f570048 AM |
4085 | maxpagesize = 1; |
4086 | if ((abfd->flags & D_PAGED) != 0) | |
4087 | maxpagesize = bed->maxpagesize; | |
4088 | ||
252b5132 RH |
4089 | off = bed->s->sizeof_ehdr; |
4090 | off += alloc * bed->s->sizeof_phdr; | |
4091 | ||
0920dee7 | 4092 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4093 | m != NULL; |
0920dee7 | 4094 | m = m->next, p++, j++) |
252b5132 | 4095 | { |
252b5132 | 4096 | asection **secpp; |
bf988460 AM |
4097 | bfd_vma off_adjust; |
4098 | bfd_boolean no_contents; | |
252b5132 RH |
4099 | |
4100 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4101 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4102 | not be done to the PT_NOTE section of a corefile, which may |
4103 | contain several pseudo-sections artificially created by bfd. | |
4104 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4105 | if (m->count > 1 |
4106 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4107 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4108 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4109 | elf_sort_sections); | |
4110 | ||
b301b248 AM |
4111 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4112 | number of sections with contents contributing to both p_filesz | |
4113 | and p_memsz, followed by a number of sections with no contents | |
4114 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4115 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4116 | p->p_type = m->p_type; |
28a7f3e7 | 4117 | p->p_flags = m->p_flags; |
252b5132 | 4118 | |
3f570048 AM |
4119 | if (m->count == 0) |
4120 | p->p_vaddr = 0; | |
4121 | else | |
3271a814 | 4122 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4123 | |
4124 | if (m->p_paddr_valid) | |
4125 | p->p_paddr = m->p_paddr; | |
4126 | else if (m->count == 0) | |
4127 | p->p_paddr = 0; | |
4128 | else | |
08a40648 | 4129 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4130 | |
4131 | if (p->p_type == PT_LOAD | |
4132 | && (abfd->flags & D_PAGED) != 0) | |
4133 | { | |
4134 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4135 | the maximum page size. When copying an executable with | |
4136 | objcopy, we set m->p_align from the input file. Use this | |
4137 | value for maxpagesize rather than bed->maxpagesize, which | |
4138 | may be different. Note that we use maxpagesize for PT_TLS | |
4139 | segment alignment later in this function, so we are relying | |
4140 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4141 | segment. */ | |
4142 | if (m->p_align_valid) | |
4143 | maxpagesize = m->p_align; | |
4144 | ||
4145 | p->p_align = maxpagesize; | |
4146 | } | |
4147 | else if (m->count == 0) | |
4148 | p->p_align = 1 << bed->s->log_file_align; | |
3271a814 NS |
4149 | else if (m->p_align_valid) |
4150 | p->p_align = m->p_align; | |
3f570048 AM |
4151 | else |
4152 | p->p_align = 0; | |
4153 | ||
bf988460 AM |
4154 | no_contents = FALSE; |
4155 | off_adjust = 0; | |
252b5132 | 4156 | if (p->p_type == PT_LOAD |
b301b248 | 4157 | && m->count > 0) |
252b5132 | 4158 | { |
b301b248 | 4159 | bfd_size_type align; |
a49e53ed | 4160 | unsigned int align_power = 0; |
b301b248 | 4161 | |
3271a814 NS |
4162 | if (m->p_align_valid) |
4163 | align = p->p_align; | |
4164 | else | |
252b5132 | 4165 | { |
3271a814 NS |
4166 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4167 | { | |
4168 | unsigned int secalign; | |
08a40648 | 4169 | |
3271a814 NS |
4170 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4171 | if (secalign > align_power) | |
4172 | align_power = secalign; | |
4173 | } | |
4174 | align = (bfd_size_type) 1 << align_power; | |
4175 | if (align < maxpagesize) | |
4176 | align = maxpagesize; | |
b301b248 | 4177 | } |
252b5132 | 4178 | |
02bf8d82 AM |
4179 | for (i = 0; i < m->count; i++) |
4180 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4181 | /* If we aren't making room for this section, then | |
4182 | it must be SHT_NOBITS regardless of what we've | |
4183 | set via struct bfd_elf_special_section. */ | |
4184 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4185 | ||
bf988460 AM |
4186 | /* Find out whether this segment contains any loadable |
4187 | sections. If the first section isn't loadable, the same | |
4188 | holds for any other sections. */ | |
4189 | i = 0; | |
4190 | while (elf_section_type (m->sections[i]) == SHT_NOBITS) | |
b301b248 | 4191 | { |
bf988460 AM |
4192 | /* If a segment starts with .tbss, we need to look |
4193 | at the next section to decide whether the segment | |
4194 | has any loadable sections. */ | |
4195 | if ((elf_section_flags (m->sections[i]) & SHF_TLS) == 0 | |
4196 | || ++i >= m->count) | |
b301b248 | 4197 | { |
bf988460 AM |
4198 | no_contents = TRUE; |
4199 | break; | |
b301b248 | 4200 | } |
252b5132 | 4201 | } |
bf988460 AM |
4202 | |
4203 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4204 | off += off_adjust; | |
4205 | if (no_contents) | |
4206 | { | |
4207 | /* We shouldn't need to align the segment on disk since | |
4208 | the segment doesn't need file space, but the gABI | |
4209 | arguably requires the alignment and glibc ld.so | |
4210 | checks it. So to comply with the alignment | |
4211 | requirement but not waste file space, we adjust | |
4212 | p_offset for just this segment. (OFF_ADJUST is | |
4213 | subtracted from OFF later.) This may put p_offset | |
4214 | past the end of file, but that shouldn't matter. */ | |
4215 | } | |
4216 | else | |
4217 | off_adjust = 0; | |
252b5132 | 4218 | } |
b1a6d0b1 NC |
4219 | /* Make sure the .dynamic section is the first section in the |
4220 | PT_DYNAMIC segment. */ | |
4221 | else if (p->p_type == PT_DYNAMIC | |
4222 | && m->count > 1 | |
4223 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4224 | { | |
4225 | _bfd_error_handler | |
b301b248 AM |
4226 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4227 | abfd); | |
b1a6d0b1 NC |
4228 | bfd_set_error (bfd_error_bad_value); |
4229 | return FALSE; | |
4230 | } | |
252b5132 | 4231 | |
252b5132 RH |
4232 | p->p_offset = 0; |
4233 | p->p_filesz = 0; | |
4234 | p->p_memsz = 0; | |
4235 | ||
4236 | if (m->includes_filehdr) | |
4237 | { | |
bf988460 | 4238 | if (!m->p_flags_valid) |
252b5132 | 4239 | p->p_flags |= PF_R; |
252b5132 RH |
4240 | p->p_filesz = bed->s->sizeof_ehdr; |
4241 | p->p_memsz = bed->s->sizeof_ehdr; | |
4242 | if (m->count > 0) | |
4243 | { | |
4244 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4245 | ||
4246 | if (p->p_vaddr < (bfd_vma) off) | |
4247 | { | |
caf47ea6 | 4248 | (*_bfd_error_handler) |
b301b248 AM |
4249 | (_("%B: Not enough room for program headers, try linking with -N"), |
4250 | abfd); | |
252b5132 | 4251 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4252 | return FALSE; |
252b5132 RH |
4253 | } |
4254 | ||
4255 | p->p_vaddr -= off; | |
bf988460 | 4256 | if (!m->p_paddr_valid) |
252b5132 RH |
4257 | p->p_paddr -= off; |
4258 | } | |
252b5132 RH |
4259 | } |
4260 | ||
4261 | if (m->includes_phdrs) | |
4262 | { | |
bf988460 | 4263 | if (!m->p_flags_valid) |
252b5132 RH |
4264 | p->p_flags |= PF_R; |
4265 | ||
f3520d2f | 4266 | if (!m->includes_filehdr) |
252b5132 RH |
4267 | { |
4268 | p->p_offset = bed->s->sizeof_ehdr; | |
4269 | ||
4270 | if (m->count > 0) | |
4271 | { | |
4272 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4273 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4274 | if (!m->p_paddr_valid) |
252b5132 RH |
4275 | p->p_paddr -= off - p->p_offset; |
4276 | } | |
252b5132 RH |
4277 | } |
4278 | ||
4279 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4280 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4281 | } | |
4282 | ||
4283 | if (p->p_type == PT_LOAD | |
4284 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4285 | { | |
bf988460 | 4286 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4287 | p->p_offset = off; |
252b5132 RH |
4288 | else |
4289 | { | |
4290 | file_ptr adjust; | |
4291 | ||
4292 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4293 | if (!no_contents) |
4294 | p->p_filesz += adjust; | |
252b5132 RH |
4295 | p->p_memsz += adjust; |
4296 | } | |
4297 | } | |
4298 | ||
1ea63fd2 AM |
4299 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4300 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4301 | core files, for sections in PT_NOTE segments. | |
4302 | assign_file_positions_for_non_load_sections will set filepos | |
4303 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4304 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4305 | { | |
4306 | asection *sec; | |
252b5132 | 4307 | bfd_size_type align; |
627b32bc | 4308 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4309 | |
4310 | sec = *secpp; | |
02bf8d82 | 4311 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4312 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4313 | |
b301b248 AM |
4314 | if (p->p_type == PT_LOAD |
4315 | || p->p_type == PT_TLS) | |
252b5132 | 4316 | { |
8c252fd9 | 4317 | bfd_signed_vma adjust = sec->lma - (p->p_paddr + p->p_memsz); |
252b5132 | 4318 | |
02bf8d82 AM |
4319 | if (this_hdr->sh_type != SHT_NOBITS |
4320 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4321 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
0e922b77 | 4322 | || p->p_type == PT_TLS))) |
252b5132 | 4323 | { |
252b5132 | 4324 | if (adjust < 0) |
b301b248 AM |
4325 | { |
4326 | (*_bfd_error_handler) | |
4327 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4328 | abfd, sec, (unsigned long) sec->lma); | |
4329 | adjust = 0; | |
4330 | } | |
252b5132 | 4331 | p->p_memsz += adjust; |
0e922b77 | 4332 | |
02bf8d82 | 4333 | if (this_hdr->sh_type != SHT_NOBITS) |
0e922b77 AM |
4334 | { |
4335 | off += adjust; | |
4336 | p->p_filesz += adjust; | |
4337 | } | |
252b5132 | 4338 | } |
252b5132 RH |
4339 | } |
4340 | ||
4341 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4342 | { | |
b301b248 AM |
4343 | /* The section at i == 0 is the one that actually contains |
4344 | everything. */ | |
4a938328 MS |
4345 | if (i == 0) |
4346 | { | |
627b32bc | 4347 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4348 | off += this_hdr->sh_size; |
4349 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4350 | p->p_memsz = 0; |
4351 | p->p_align = 1; | |
252b5132 | 4352 | } |
4a938328 | 4353 | else |
252b5132 | 4354 | { |
b301b248 | 4355 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4356 | sec->filepos = 0; |
eea6121a | 4357 | sec->size = 0; |
b301b248 AM |
4358 | sec->flags = 0; |
4359 | continue; | |
252b5132 | 4360 | } |
252b5132 RH |
4361 | } |
4362 | else | |
4363 | { | |
b301b248 AM |
4364 | if (p->p_type == PT_LOAD) |
4365 | { | |
02bf8d82 AM |
4366 | this_hdr->sh_offset = sec->filepos = off; |
4367 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4368 | off += this_hdr->sh_size; |
b301b248 | 4369 | } |
252b5132 | 4370 | |
02bf8d82 | 4371 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4372 | { |
6a3cd2b4 | 4373 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4374 | /* A load section without SHF_ALLOC is something like |
4375 | a note section in a PT_NOTE segment. These take | |
4376 | file space but are not loaded into memory. */ | |
4377 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4378 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4379 | } |
6a3cd2b4 | 4380 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4381 | { |
6a3cd2b4 AM |
4382 | if (p->p_type == PT_TLS) |
4383 | p->p_memsz += this_hdr->sh_size; | |
4384 | ||
4385 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4386 | normal segments. */ | |
4387 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4388 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4389 | } |
4390 | ||
c9df6640 L |
4391 | if (p->p_type == PT_GNU_RELRO) |
4392 | p->p_align = 1; | |
4393 | else if (align > p->p_align | |
3271a814 | 4394 | && !m->p_align_valid |
c9df6640 L |
4395 | && (p->p_type != PT_LOAD |
4396 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4397 | p->p_align = align; |
4398 | } | |
4399 | ||
bf988460 | 4400 | if (!m->p_flags_valid) |
252b5132 RH |
4401 | { |
4402 | p->p_flags |= PF_R; | |
02bf8d82 | 4403 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4404 | p->p_flags |= PF_X; |
02bf8d82 | 4405 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4406 | p->p_flags |= PF_W; |
4407 | } | |
4408 | } | |
bf988460 | 4409 | off -= off_adjust; |
0920dee7 | 4410 | |
7c928300 AM |
4411 | /* Check that all sections are in a PT_LOAD segment. |
4412 | Don't check funky gdb generated core files. */ | |
4413 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4414 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4415 | { | |
4416 | Elf_Internal_Shdr *this_hdr; | |
4417 | asection *sec; | |
4418 | ||
4419 | sec = *secpp; | |
4420 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4421 | if (this_hdr->sh_size != 0 | |
4422 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4423 | { | |
4424 | (*_bfd_error_handler) | |
4425 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4426 | abfd, sec, j); | |
6d33f217 | 4427 | print_segment_map (m); |
0920dee7 L |
4428 | bfd_set_error (bfd_error_bad_value); |
4429 | return FALSE; | |
4430 | } | |
4431 | } | |
252b5132 RH |
4432 | } |
4433 | ||
f3520d2f AM |
4434 | elf_tdata (abfd)->next_file_pos = off; |
4435 | return TRUE; | |
4436 | } | |
4437 | ||
4438 | /* Assign file positions for the other sections. */ | |
4439 | ||
4440 | static bfd_boolean | |
4441 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4442 | struct bfd_link_info *link_info) | |
4443 | { | |
4444 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4445 | Elf_Internal_Shdr **i_shdrpp; | |
4446 | Elf_Internal_Shdr **hdrpp; | |
4447 | Elf_Internal_Phdr *phdrs; | |
4448 | Elf_Internal_Phdr *p; | |
4449 | struct elf_segment_map *m; | |
4450 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4451 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4452 | file_ptr off; | |
4453 | unsigned int num_sec; | |
4454 | unsigned int i; | |
4455 | unsigned int count; | |
4456 | ||
5c182d5f AM |
4457 | i_shdrpp = elf_elfsections (abfd); |
4458 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4459 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4460 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4461 | { | |
4462 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4463 | Elf_Internal_Shdr *hdr; | |
4464 | ||
4465 | hdr = *hdrpp; | |
4466 | if (hdr->bfd_section != NULL | |
252e386e AM |
4467 | && (hdr->bfd_section->filepos != 0 |
4468 | || (hdr->sh_type == SHT_NOBITS | |
4469 | && hdr->contents == NULL))) | |
627b32bc | 4470 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4471 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4472 | { | |
49c13adb L |
4473 | if (hdr->sh_size != 0) |
4474 | ((*_bfd_error_handler) | |
4475 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4476 | abfd, |
4477 | (hdr->bfd_section == NULL | |
4478 | ? "*unknown*" | |
4479 | : hdr->bfd_section->name))); | |
4480 | /* We don't need to page align empty sections. */ | |
4481 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4482 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4483 | bed->maxpagesize); | |
4484 | else | |
4485 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4486 | hdr->sh_addralign); | |
4487 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4488 | FALSE); | |
4489 | } | |
4490 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4491 | && hdr->bfd_section == NULL) | |
4492 | || hdr == i_shdrpp[tdata->symtab_section] | |
4493 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4494 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4495 | hdr->sh_offset = -1; | |
4496 | else | |
4497 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4498 | ||
4499 | if (i == SHN_LORESERVE - 1) | |
4500 | { | |
4501 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4502 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4503 | } | |
4504 | } | |
4505 | ||
252b5132 RH |
4506 | /* Now that we have set the section file positions, we can set up |
4507 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4508 | count = 0; |
4509 | filehdr_vaddr = 0; | |
4510 | filehdr_paddr = 0; | |
4511 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4512 | phdrs_paddr = 0; | |
4513 | phdrs = elf_tdata (abfd)->phdr; | |
4514 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4515 | m != NULL; | |
4516 | m = m->next, p++) | |
4517 | { | |
4518 | ++count; | |
4519 | if (p->p_type != PT_LOAD) | |
4520 | continue; | |
4521 | ||
4522 | if (m->includes_filehdr) | |
4523 | { | |
4524 | filehdr_vaddr = p->p_vaddr; | |
4525 | filehdr_paddr = p->p_paddr; | |
4526 | } | |
4527 | if (m->includes_phdrs) | |
4528 | { | |
4529 | phdrs_vaddr = p->p_vaddr; | |
4530 | phdrs_paddr = p->p_paddr; | |
4531 | if (m->includes_filehdr) | |
4532 | { | |
4533 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4534 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4535 | } | |
4536 | } | |
4537 | } | |
4538 | ||
252b5132 RH |
4539 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4540 | m != NULL; | |
4541 | m = m->next, p++) | |
4542 | { | |
1ea63fd2 | 4543 | if (m->count != 0) |
252b5132 | 4544 | { |
1ea63fd2 AM |
4545 | if (p->p_type != PT_LOAD |
4546 | && (p->p_type != PT_NOTE || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4547 | { |
1ea63fd2 AM |
4548 | Elf_Internal_Shdr *hdr; |
4549 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); | |
4550 | ||
4551 | hdr = &elf_section_data (m->sections[m->count - 1])->this_hdr; | |
4552 | p->p_filesz = (m->sections[m->count - 1]->filepos | |
4553 | - m->sections[0]->filepos); | |
4554 | if (hdr->sh_type != SHT_NOBITS) | |
4555 | p->p_filesz += hdr->sh_size; | |
4556 | ||
4557 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4558 | } |
252b5132 | 4559 | } |
1ea63fd2 | 4560 | else |
252b5132 RH |
4561 | { |
4562 | if (m->includes_filehdr) | |
4563 | { | |
4564 | p->p_vaddr = filehdr_vaddr; | |
4565 | if (! m->p_paddr_valid) | |
4566 | p->p_paddr = filehdr_paddr; | |
4567 | } | |
4568 | else if (m->includes_phdrs) | |
4569 | { | |
4570 | p->p_vaddr = phdrs_vaddr; | |
4571 | if (! m->p_paddr_valid) | |
4572 | p->p_paddr = phdrs_paddr; | |
4573 | } | |
8c37241b JJ |
4574 | else if (p->p_type == PT_GNU_RELRO) |
4575 | { | |
4576 | Elf_Internal_Phdr *lp; | |
4577 | ||
4578 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4579 | { | |
4580 | if (lp->p_type == PT_LOAD | |
4581 | && lp->p_vaddr <= link_info->relro_end | |
4582 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4583 | && (lp->p_vaddr + lp->p_filesz |
4584 | >= link_info->relro_end)) | |
8c37241b JJ |
4585 | break; |
4586 | } | |
4587 | ||
4588 | if (lp < phdrs + count | |
4589 | && link_info->relro_end > lp->p_vaddr) | |
4590 | { | |
4591 | p->p_vaddr = lp->p_vaddr; | |
4592 | p->p_paddr = lp->p_paddr; | |
4593 | p->p_offset = lp->p_offset; | |
4594 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4595 | p->p_memsz = p->p_filesz; | |
4596 | p->p_align = 1; | |
4597 | p->p_flags = (lp->p_flags & ~PF_W); | |
4598 | } | |
4599 | else | |
4600 | { | |
4601 | memset (p, 0, sizeof *p); | |
4602 | p->p_type = PT_NULL; | |
4603 | } | |
4604 | } | |
252b5132 RH |
4605 | } |
4606 | } | |
4607 | ||
252b5132 RH |
4608 | elf_tdata (abfd)->next_file_pos = off; |
4609 | ||
b34976b6 | 4610 | return TRUE; |
252b5132 RH |
4611 | } |
4612 | ||
252b5132 RH |
4613 | /* Work out the file positions of all the sections. This is called by |
4614 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4615 | VMAs must be known before this is called. | |
4616 | ||
e0638f70 AM |
4617 | Reloc sections come in two flavours: Those processed specially as |
4618 | "side-channel" data attached to a section to which they apply, and | |
4619 | those that bfd doesn't process as relocations. The latter sort are | |
4620 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4621 | consider the former sort here, unless they form part of the loadable | |
4622 | image. Reloc sections not assigned here will be handled later by | |
4623 | assign_file_positions_for_relocs. | |
252b5132 RH |
4624 | |
4625 | We also don't set the positions of the .symtab and .strtab here. */ | |
4626 | ||
b34976b6 | 4627 | static bfd_boolean |
c84fca4d AO |
4628 | assign_file_positions_except_relocs (bfd *abfd, |
4629 | struct bfd_link_info *link_info) | |
252b5132 | 4630 | { |
5c182d5f AM |
4631 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4632 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4633 | file_ptr off; |
9c5bfbb7 | 4634 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4635 | |
4636 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4637 | && bfd_get_format (abfd) != bfd_core) | |
4638 | { | |
5c182d5f AM |
4639 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4640 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4641 | Elf_Internal_Shdr **hdrpp; |
4642 | unsigned int i; | |
4643 | ||
4644 | /* Start after the ELF header. */ | |
4645 | off = i_ehdrp->e_ehsize; | |
4646 | ||
4647 | /* We are not creating an executable, which means that we are | |
4648 | not creating a program header, and that the actual order of | |
4649 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4650 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4651 | { |
4652 | Elf_Internal_Shdr *hdr; | |
4653 | ||
4654 | hdr = *hdrpp; | |
e0638f70 AM |
4655 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4656 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4657 | || i == tdata->symtab_section |
4658 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4659 | || i == tdata->strtab_section) |
4660 | { | |
4661 | hdr->sh_offset = -1; | |
252b5132 | 4662 | } |
9ad5cbcf | 4663 | else |
b34976b6 | 4664 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4665 | |
9ad5cbcf AM |
4666 | if (i == SHN_LORESERVE - 1) |
4667 | { | |
4668 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4669 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4670 | } | |
252b5132 RH |
4671 | } |
4672 | } | |
4673 | else | |
4674 | { | |
f3520d2f AM |
4675 | unsigned int alloc; |
4676 | ||
252b5132 | 4677 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4678 | assignment of sections to segments. */ |
f3520d2f AM |
4679 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4680 | return FALSE; | |
4681 | ||
4682 | /* And for non-load sections. */ | |
4683 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4684 | return FALSE; | |
4685 | ||
e36284ab AM |
4686 | if (bed->elf_backend_modify_program_headers != NULL) |
4687 | { | |
4688 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4689 | return FALSE; | |
4690 | } | |
4691 | ||
f3520d2f AM |
4692 | /* Write out the program headers. */ |
4693 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4694 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4695 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4696 | return FALSE; |
252b5132 | 4697 | |
5c182d5f | 4698 | off = tdata->next_file_pos; |
252b5132 RH |
4699 | } |
4700 | ||
4701 | /* Place the section headers. */ | |
45d6a902 | 4702 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4703 | i_ehdrp->e_shoff = off; |
4704 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4705 | ||
5c182d5f | 4706 | tdata->next_file_pos = off; |
252b5132 | 4707 | |
b34976b6 | 4708 | return TRUE; |
252b5132 RH |
4709 | } |
4710 | ||
b34976b6 | 4711 | static bfd_boolean |
217aa764 | 4712 | prep_headers (bfd *abfd) |
252b5132 RH |
4713 | { |
4714 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4715 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4716 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4717 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4718 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4719 | |
4720 | i_ehdrp = elf_elfheader (abfd); | |
4721 | i_shdrp = elf_elfsections (abfd); | |
4722 | ||
2b0f7ef9 | 4723 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4724 | if (shstrtab == NULL) |
b34976b6 | 4725 | return FALSE; |
252b5132 RH |
4726 | |
4727 | elf_shstrtab (abfd) = shstrtab; | |
4728 | ||
4729 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4730 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4731 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4732 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4733 | ||
4734 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4735 | i_ehdrp->e_ident[EI_DATA] = | |
4736 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4737 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4738 | ||
252b5132 RH |
4739 | if ((abfd->flags & DYNAMIC) != 0) |
4740 | i_ehdrp->e_type = ET_DYN; | |
4741 | else if ((abfd->flags & EXEC_P) != 0) | |
4742 | i_ehdrp->e_type = ET_EXEC; | |
4743 | else if (bfd_get_format (abfd) == bfd_core) | |
4744 | i_ehdrp->e_type = ET_CORE; | |
4745 | else | |
4746 | i_ehdrp->e_type = ET_REL; | |
4747 | ||
4748 | switch (bfd_get_arch (abfd)) | |
4749 | { | |
4750 | case bfd_arch_unknown: | |
4751 | i_ehdrp->e_machine = EM_NONE; | |
4752 | break; | |
aa4f99bb AO |
4753 | |
4754 | /* There used to be a long list of cases here, each one setting | |
4755 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4756 | in the corresponding bfd definition. To avoid duplication, | |
4757 | the switch was removed. Machines that need special handling | |
4758 | can generally do it in elf_backend_final_write_processing(), | |
4759 | unless they need the information earlier than the final write. | |
4760 | Such need can generally be supplied by replacing the tests for | |
4761 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4762 | default: |
9c5bfbb7 AM |
4763 | i_ehdrp->e_machine = bed->elf_machine_code; |
4764 | } | |
aa4f99bb | 4765 | |
252b5132 RH |
4766 | i_ehdrp->e_version = bed->s->ev_current; |
4767 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4768 | ||
c044fabd | 4769 | /* No program header, for now. */ |
252b5132 RH |
4770 | i_ehdrp->e_phoff = 0; |
4771 | i_ehdrp->e_phentsize = 0; | |
4772 | i_ehdrp->e_phnum = 0; | |
4773 | ||
c044fabd | 4774 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4775 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4776 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4777 | ||
c044fabd | 4778 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4779 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4780 | /* It all happens later. */ |
4781 | ; | |
252b5132 RH |
4782 | else |
4783 | { | |
4784 | i_ehdrp->e_phentsize = 0; | |
4785 | i_phdrp = 0; | |
4786 | i_ehdrp->e_phoff = 0; | |
4787 | } | |
4788 | ||
4789 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4790 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4791 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4792 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4793 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4794 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4795 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4796 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4797 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4798 | return FALSE; |
252b5132 | 4799 | |
b34976b6 | 4800 | return TRUE; |
252b5132 RH |
4801 | } |
4802 | ||
4803 | /* Assign file positions for all the reloc sections which are not part | |
4804 | of the loadable file image. */ | |
4805 | ||
4806 | void | |
217aa764 | 4807 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4808 | { |
4809 | file_ptr off; | |
9ad5cbcf | 4810 | unsigned int i, num_sec; |
252b5132 RH |
4811 | Elf_Internal_Shdr **shdrpp; |
4812 | ||
4813 | off = elf_tdata (abfd)->next_file_pos; | |
4814 | ||
9ad5cbcf AM |
4815 | num_sec = elf_numsections (abfd); |
4816 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4817 | { |
4818 | Elf_Internal_Shdr *shdrp; | |
4819 | ||
4820 | shdrp = *shdrpp; | |
4821 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4822 | && shdrp->sh_offset == -1) | |
b34976b6 | 4823 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4824 | } |
4825 | ||
4826 | elf_tdata (abfd)->next_file_pos = off; | |
4827 | } | |
4828 | ||
b34976b6 | 4829 | bfd_boolean |
217aa764 | 4830 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4831 | { |
9c5bfbb7 | 4832 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4833 | Elf_Internal_Ehdr *i_ehdrp; |
4834 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4835 | bfd_boolean failed; |
9ad5cbcf | 4836 | unsigned int count, num_sec; |
252b5132 RH |
4837 | |
4838 | if (! abfd->output_has_begun | |
217aa764 | 4839 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4840 | return FALSE; |
252b5132 RH |
4841 | |
4842 | i_shdrp = elf_elfsections (abfd); | |
4843 | i_ehdrp = elf_elfheader (abfd); | |
4844 | ||
b34976b6 | 4845 | failed = FALSE; |
252b5132 RH |
4846 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4847 | if (failed) | |
b34976b6 | 4848 | return FALSE; |
252b5132 RH |
4849 | |
4850 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4851 | ||
c044fabd | 4852 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4853 | num_sec = elf_numsections (abfd); |
4854 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4855 | { |
4856 | if (bed->elf_backend_section_processing) | |
4857 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4858 | if (i_shdrp[count]->contents) | |
4859 | { | |
dc810e39 AM |
4860 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4861 | ||
252b5132 | 4862 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4863 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4864 | return FALSE; |
252b5132 | 4865 | } |
9ad5cbcf AM |
4866 | if (count == SHN_LORESERVE - 1) |
4867 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4868 | } |
4869 | ||
4870 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4871 | if (elf_shstrtab (abfd) != NULL |
4872 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 4873 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 4874 | return FALSE; |
252b5132 RH |
4875 | |
4876 | if (bed->elf_backend_final_write_processing) | |
4877 | (*bed->elf_backend_final_write_processing) (abfd, | |
4878 | elf_tdata (abfd)->linker); | |
4879 | ||
ff59fc36 RM |
4880 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
4881 | return FALSE; | |
4882 | ||
4883 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
4884 | if (elf_tdata (abfd)->after_write_object_contents) |
4885 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
4886 | |
4887 | return TRUE; | |
252b5132 RH |
4888 | } |
4889 | ||
b34976b6 | 4890 | bfd_boolean |
217aa764 | 4891 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4892 | { |
c044fabd | 4893 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4894 | return _bfd_elf_write_object_contents (abfd); |
4895 | } | |
c044fabd KH |
4896 | |
4897 | /* Given a section, search the header to find them. */ | |
4898 | ||
252b5132 | 4899 | int |
198beae2 | 4900 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4901 | { |
9c5bfbb7 | 4902 | const struct elf_backend_data *bed; |
252b5132 | 4903 | int index; |
252b5132 | 4904 | |
9ad5cbcf AM |
4905 | if (elf_section_data (asect) != NULL |
4906 | && elf_section_data (asect)->this_idx != 0) | |
4907 | return elf_section_data (asect)->this_idx; | |
4908 | ||
4909 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4910 | index = SHN_ABS; |
4911 | else if (bfd_is_com_section (asect)) | |
4912 | index = SHN_COMMON; | |
4913 | else if (bfd_is_und_section (asect)) | |
4914 | index = SHN_UNDEF; | |
4915 | else | |
6dc132d9 | 4916 | index = -1; |
252b5132 | 4917 | |
af746e92 | 4918 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4919 | if (bed->elf_backend_section_from_bfd_section) |
4920 | { | |
af746e92 | 4921 | int retval = index; |
9ad5cbcf | 4922 | |
af746e92 AM |
4923 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4924 | return retval; | |
252b5132 RH |
4925 | } |
4926 | ||
af746e92 AM |
4927 | if (index == -1) |
4928 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4929 | |
af746e92 | 4930 | return index; |
252b5132 RH |
4931 | } |
4932 | ||
4933 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4934 | on error. */ | |
4935 | ||
4936 | int | |
217aa764 | 4937 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4938 | { |
4939 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4940 | int idx; | |
4941 | flagword flags = asym_ptr->flags; | |
4942 | ||
4943 | /* When gas creates relocations against local labels, it creates its | |
4944 | own symbol for the section, but does put the symbol into the | |
4945 | symbol chain, so udata is 0. When the linker is generating | |
4946 | relocatable output, this section symbol may be for one of the | |
4947 | input sections rather than the output section. */ | |
4948 | if (asym_ptr->udata.i == 0 | |
4949 | && (flags & BSF_SECTION_SYM) | |
4950 | && asym_ptr->section) | |
4951 | { | |
5372391b | 4952 | asection *sec; |
252b5132 RH |
4953 | int indx; |
4954 | ||
5372391b AM |
4955 | sec = asym_ptr->section; |
4956 | if (sec->owner != abfd && sec->output_section != NULL) | |
4957 | sec = sec->output_section; | |
4958 | if (sec->owner == abfd | |
4959 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 4960 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
4961 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
4962 | } | |
4963 | ||
4964 | idx = asym_ptr->udata.i; | |
4965 | ||
4966 | if (idx == 0) | |
4967 | { | |
4968 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 4969 | which is used in a relocation entry. */ |
252b5132 | 4970 | (*_bfd_error_handler) |
d003868e AM |
4971 | (_("%B: symbol `%s' required but not present"), |
4972 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
4973 | bfd_set_error (bfd_error_no_symbols); |
4974 | return -1; | |
4975 | } | |
4976 | ||
4977 | #if DEBUG & 4 | |
4978 | { | |
4979 | fprintf (stderr, | |
661a3fd4 | 4980 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
4981 | (long) asym_ptr, asym_ptr->name, idx, flags, |
4982 | elf_symbol_flags (flags)); | |
4983 | fflush (stderr); | |
4984 | } | |
4985 | #endif | |
4986 | ||
4987 | return idx; | |
4988 | } | |
4989 | ||
84d1d650 | 4990 | /* Rewrite program header information. */ |
252b5132 | 4991 | |
b34976b6 | 4992 | static bfd_boolean |
84d1d650 | 4993 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 4994 | { |
b34976b6 AM |
4995 | Elf_Internal_Ehdr *iehdr; |
4996 | struct elf_segment_map *map; | |
4997 | struct elf_segment_map *map_first; | |
4998 | struct elf_segment_map **pointer_to_map; | |
4999 | Elf_Internal_Phdr *segment; | |
5000 | asection *section; | |
5001 | unsigned int i; | |
5002 | unsigned int num_segments; | |
5003 | bfd_boolean phdr_included = FALSE; | |
5004 | bfd_vma maxpagesize; | |
5005 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5006 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5007 | const struct elf_backend_data *bed; |
bc67d8a6 | 5008 | |
caf47ea6 | 5009 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5010 | iehdr = elf_elfheader (ibfd); |
5011 | ||
bc67d8a6 | 5012 | map_first = NULL; |
c044fabd | 5013 | pointer_to_map = &map_first; |
252b5132 RH |
5014 | |
5015 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5016 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5017 | ||
5018 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5019 | #define SEGMENT_END(segment, start) \ |
5020 | (start + (segment->p_memsz > segment->p_filesz \ | |
5021 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5022 | |
eecdbe52 JJ |
5023 | #define SECTION_SIZE(section, segment) \ |
5024 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5025 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5026 | ? section->size : 0) |
eecdbe52 | 5027 | |
b34976b6 | 5028 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5029 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5030 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5031 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5032 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5033 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5034 | |
b34976b6 | 5035 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5036 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5037 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5038 | (section->lma >= base \ | |
eecdbe52 | 5039 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5040 | <= SEGMENT_END (segment, base))) |
252b5132 | 5041 | |
c044fabd | 5042 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5043 | #define IS_COREFILE_NOTE(p, s) \ |
5044 | (p->p_type == PT_NOTE \ | |
5045 | && bfd_get_format (ibfd) == bfd_core \ | |
5046 | && s->vma == 0 && s->lma == 0 \ | |
5047 | && (bfd_vma) s->filepos >= p->p_offset \ | |
cb3ff1e5 | 5048 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5049 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5050 | |
5051 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5052 | linker, which generates a PT_INTERP section with p_vaddr and | |
5053 | p_memsz set to 0. */ | |
aecc8f8a AM |
5054 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5055 | (p->p_vaddr == 0 \ | |
5056 | && p->p_paddr == 0 \ | |
5057 | && p->p_memsz == 0 \ | |
5058 | && p->p_filesz > 0 \ | |
5059 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5060 | && s->size > 0 \ |
aecc8f8a | 5061 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5062 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5063 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5064 | |
bc67d8a6 NC |
5065 | /* Decide if the given section should be included in the given segment. |
5066 | A section will be included if: | |
f5ffc919 | 5067 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5068 | if that is set for the segment and the VMA otherwise, |
bc67d8a6 NC |
5069 | 2. It is an allocated segment, |
5070 | 3. There is an output section associated with it, | |
eecdbe52 | 5071 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 5072 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 5073 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
5074 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5075 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5076 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5077 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
5078 | ((((segment->p_paddr \ |
5079 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5080 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
5081 | && (section->flags & SEC_ALLOC) != 0) \ | |
5082 | || IS_COREFILE_NOTE (segment, section)) \ | |
5083 | && segment->p_type != PT_GNU_STACK \ | |
5084 | && (segment->p_type != PT_TLS \ | |
5085 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5086 | && (segment->p_type == PT_LOAD \ | |
5087 | || segment->p_type == PT_TLS \ | |
5088 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
5089 | && (segment->p_type != PT_DYNAMIC \ | |
5090 | || SECTION_SIZE (section, segment) > 0 \ | |
5091 | || (segment->p_paddr \ | |
5092 | ? segment->p_paddr != section->lma \ | |
5093 | : segment->p_vaddr != section->vma) \ | |
5094 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5095 | == 0)) \ | |
5096 | && ! section->segment_mark) | |
bc67d8a6 | 5097 | |
9f17e2a6 L |
5098 | /* If the output section of a section in the input segment is NULL, |
5099 | it is removed from the corresponding output segment. */ | |
5100 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5101 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5102 | && section->output_section != NULL) | |
5103 | ||
b34976b6 | 5104 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5105 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5106 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5107 | ||
5108 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5109 | their VMA address ranges and their LMA address ranges overlap. | |
5110 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5111 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5112 | to the same VMA range, but with the .data section mapped to a different | |
5113 | LMA. */ | |
aecc8f8a | 5114 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5115 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5116 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5117 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5118 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5119 | |
5120 | /* Initialise the segment mark field. */ | |
5121 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5122 | section->segment_mark = FALSE; |
bc67d8a6 | 5123 | |
252b5132 | 5124 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5125 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5126 | in the loadable segments. These can be created by weird |
aecc8f8a | 5127 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5128 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5129 | i < num_segments; | |
c044fabd | 5130 | i++, segment++) |
252b5132 | 5131 | { |
252b5132 | 5132 | unsigned int j; |
c044fabd | 5133 | Elf_Internal_Phdr *segment2; |
252b5132 | 5134 | |
aecc8f8a AM |
5135 | if (segment->p_type == PT_INTERP) |
5136 | for (section = ibfd->sections; section; section = section->next) | |
5137 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5138 | { | |
5139 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5140 | assignment code will work. */ |
aecc8f8a AM |
5141 | segment->p_vaddr = section->vma; |
5142 | break; | |
5143 | } | |
5144 | ||
bc67d8a6 NC |
5145 | if (segment->p_type != PT_LOAD) |
5146 | continue; | |
c044fabd | 5147 | |
bc67d8a6 | 5148 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5149 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5150 | { |
5151 | bfd_signed_vma extra_length; | |
c044fabd | 5152 | |
bc67d8a6 NC |
5153 | if (segment2->p_type != PT_LOAD |
5154 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5155 | continue; | |
c044fabd | 5156 | |
bc67d8a6 NC |
5157 | /* Merge the two segments together. */ |
5158 | if (segment2->p_vaddr < segment->p_vaddr) | |
5159 | { | |
c044fabd | 5160 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5161 | SEGMENT. */ |
bc67d8a6 NC |
5162 | extra_length = |
5163 | SEGMENT_END (segment, segment->p_vaddr) | |
5164 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5165 | |
bc67d8a6 NC |
5166 | if (extra_length > 0) |
5167 | { | |
5168 | segment2->p_memsz += extra_length; | |
5169 | segment2->p_filesz += extra_length; | |
5170 | } | |
c044fabd | 5171 | |
bc67d8a6 | 5172 | segment->p_type = PT_NULL; |
c044fabd | 5173 | |
bc67d8a6 NC |
5174 | /* Since we have deleted P we must restart the outer loop. */ |
5175 | i = 0; | |
5176 | segment = elf_tdata (ibfd)->phdr; | |
5177 | break; | |
5178 | } | |
5179 | else | |
5180 | { | |
c044fabd | 5181 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5182 | SEGMENT2. */ |
bc67d8a6 NC |
5183 | extra_length = |
5184 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5185 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5186 | |
bc67d8a6 NC |
5187 | if (extra_length > 0) |
5188 | { | |
5189 | segment->p_memsz += extra_length; | |
5190 | segment->p_filesz += extra_length; | |
5191 | } | |
c044fabd | 5192 | |
bc67d8a6 NC |
5193 | segment2->p_type = PT_NULL; |
5194 | } | |
5195 | } | |
5196 | } | |
c044fabd | 5197 | |
bc67d8a6 NC |
5198 | /* The second scan attempts to assign sections to segments. */ |
5199 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5200 | i < num_segments; | |
5201 | i ++, segment ++) | |
5202 | { | |
5203 | unsigned int section_count; | |
5204 | asection ** sections; | |
5205 | asection * output_section; | |
5206 | unsigned int isec; | |
5207 | bfd_vma matching_lma; | |
5208 | bfd_vma suggested_lma; | |
5209 | unsigned int j; | |
dc810e39 | 5210 | bfd_size_type amt; |
9f17e2a6 | 5211 | asection * first_section; |
bc67d8a6 NC |
5212 | |
5213 | if (segment->p_type == PT_NULL) | |
5214 | continue; | |
c044fabd | 5215 | |
9f17e2a6 | 5216 | first_section = NULL; |
bc67d8a6 | 5217 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5218 | for (section = ibfd->sections, section_count = 0; |
5219 | section != NULL; | |
5220 | section = section->next) | |
9f17e2a6 L |
5221 | { |
5222 | /* Find the first section in the input segment, which may be | |
5223 | removed from the corresponding output segment. */ | |
5224 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5225 | { | |
5226 | if (first_section == NULL) | |
5227 | first_section = section; | |
5228 | if (section->output_section != NULL) | |
5229 | ++section_count; | |
5230 | } | |
5231 | } | |
811072d8 | 5232 | |
b5f852ea NC |
5233 | /* Allocate a segment map big enough to contain |
5234 | all of the sections we have selected. */ | |
dc810e39 AM |
5235 | amt = sizeof (struct elf_segment_map); |
5236 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5237 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5238 | if (map == NULL) |
b34976b6 | 5239 | return FALSE; |
252b5132 RH |
5240 | |
5241 | /* Initialise the fields of the segment map. Default to | |
5242 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5243 | map->next = NULL; |
5244 | map->p_type = segment->p_type; | |
5245 | map->p_flags = segment->p_flags; | |
5246 | map->p_flags_valid = 1; | |
55d55ac7 | 5247 | |
9f17e2a6 L |
5248 | /* If the first section in the input segment is removed, there is |
5249 | no need to preserve segment physical address in the corresponding | |
5250 | output segment. */ | |
945c025a | 5251 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5252 | { |
5253 | map->p_paddr = segment->p_paddr; | |
5254 | map->p_paddr_valid = 1; | |
5255 | } | |
252b5132 RH |
5256 | |
5257 | /* Determine if this segment contains the ELF file header | |
5258 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5259 | map->includes_filehdr = (segment->p_offset == 0 |
5260 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5261 | |
bc67d8a6 | 5262 | map->includes_phdrs = 0; |
252b5132 | 5263 | |
bc67d8a6 | 5264 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5265 | { |
bc67d8a6 NC |
5266 | map->includes_phdrs = |
5267 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5268 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5269 | >= ((bfd_vma) iehdr->e_phoff |
5270 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5271 | |
bc67d8a6 | 5272 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5273 | phdr_included = TRUE; |
252b5132 RH |
5274 | } |
5275 | ||
bc67d8a6 | 5276 | if (section_count == 0) |
252b5132 RH |
5277 | { |
5278 | /* Special segments, such as the PT_PHDR segment, may contain | |
5279 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5280 | something. They are allowed by the ELF spec however, so only |
5281 | a warning is produced. */ | |
bc67d8a6 | 5282 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5283 | (*_bfd_error_handler) |
d003868e AM |
5284 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5285 | ibfd); | |
252b5132 | 5286 | |
bc67d8a6 | 5287 | map->count = 0; |
c044fabd KH |
5288 | *pointer_to_map = map; |
5289 | pointer_to_map = &map->next; | |
252b5132 RH |
5290 | |
5291 | continue; | |
5292 | } | |
5293 | ||
5294 | /* Now scan the sections in the input BFD again and attempt | |
5295 | to add their corresponding output sections to the segment map. | |
5296 | The problem here is how to handle an output section which has | |
5297 | been moved (ie had its LMA changed). There are four possibilities: | |
5298 | ||
5299 | 1. None of the sections have been moved. | |
5300 | In this case we can continue to use the segment LMA from the | |
5301 | input BFD. | |
5302 | ||
5303 | 2. All of the sections have been moved by the same amount. | |
5304 | In this case we can change the segment's LMA to match the LMA | |
5305 | of the first section. | |
5306 | ||
5307 | 3. Some of the sections have been moved, others have not. | |
5308 | In this case those sections which have not been moved can be | |
5309 | placed in the current segment which will have to have its size, | |
5310 | and possibly its LMA changed, and a new segment or segments will | |
5311 | have to be created to contain the other sections. | |
5312 | ||
b5f852ea | 5313 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5314 | In this case we can change the segment's LMA to match the LMA |
5315 | of the first section and we will have to create a new segment | |
5316 | or segments to contain the other sections. | |
5317 | ||
5318 | In order to save time, we allocate an array to hold the section | |
5319 | pointers that we are interested in. As these sections get assigned | |
5320 | to a segment, they are removed from this array. */ | |
5321 | ||
0b14c2aa L |
5322 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5323 | to work around this long long bug. */ | |
d0fb9a8d | 5324 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5325 | if (sections == NULL) |
b34976b6 | 5326 | return FALSE; |
252b5132 RH |
5327 | |
5328 | /* Step One: Scan for segment vs section LMA conflicts. | |
5329 | Also add the sections to the section array allocated above. | |
5330 | Also add the sections to the current segment. In the common | |
5331 | case, where the sections have not been moved, this means that | |
5332 | we have completely filled the segment, and there is nothing | |
5333 | more to do. */ | |
252b5132 | 5334 | isec = 0; |
72730e0c | 5335 | matching_lma = 0; |
252b5132 RH |
5336 | suggested_lma = 0; |
5337 | ||
bc67d8a6 NC |
5338 | for (j = 0, section = ibfd->sections; |
5339 | section != NULL; | |
5340 | section = section->next) | |
252b5132 | 5341 | { |
caf47ea6 | 5342 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5343 | { |
bc67d8a6 NC |
5344 | output_section = section->output_section; |
5345 | ||
5346 | sections[j ++] = section; | |
252b5132 RH |
5347 | |
5348 | /* The Solaris native linker always sets p_paddr to 0. | |
5349 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5350 | correct value. Note - some backends require that |
5351 | p_paddr be left as zero. */ | |
bc67d8a6 | 5352 | if (segment->p_paddr == 0 |
4455705d | 5353 | && segment->p_vaddr != 0 |
5e8d7549 | 5354 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5355 | && isec == 0 |
bc67d8a6 NC |
5356 | && output_section->lma != 0 |
5357 | && (output_section->vma == (segment->p_vaddr | |
5358 | + (map->includes_filehdr | |
5359 | ? iehdr->e_ehsize | |
5360 | : 0) | |
5361 | + (map->includes_phdrs | |
079e9a2f AM |
5362 | ? (iehdr->e_phnum |
5363 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5364 | : 0)))) |
5365 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5366 | |
5367 | /* Match up the physical address of the segment with the | |
5368 | LMA address of the output section. */ | |
bc67d8a6 | 5369 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5370 | || IS_COREFILE_NOTE (segment, section) |
5371 | || (bed->want_p_paddr_set_to_zero && | |
08a40648 | 5372 | IS_CONTAINED_BY_VMA (output_section, segment))) |
252b5132 | 5373 | { |
c981028a | 5374 | if (matching_lma == 0 || output_section->lma < matching_lma) |
bc67d8a6 | 5375 | matching_lma = output_section->lma; |
252b5132 RH |
5376 | |
5377 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5378 | then it does not overlap any other section within that |
252b5132 | 5379 | segment. */ |
bc67d8a6 | 5380 | map->sections[isec ++] = output_section; |
252b5132 RH |
5381 | } |
5382 | else if (suggested_lma == 0) | |
bc67d8a6 | 5383 | suggested_lma = output_section->lma; |
252b5132 RH |
5384 | } |
5385 | } | |
5386 | ||
bc67d8a6 | 5387 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5388 | |
5389 | /* Step Two: Adjust the physical address of the current segment, | |
5390 | if necessary. */ | |
bc67d8a6 | 5391 | if (isec == section_count) |
252b5132 RH |
5392 | { |
5393 | /* All of the sections fitted within the segment as currently | |
5394 | specified. This is the default case. Add the segment to | |
5395 | the list of built segments and carry on to process the next | |
5396 | program header in the input BFD. */ | |
bc67d8a6 | 5397 | map->count = section_count; |
c044fabd KH |
5398 | *pointer_to_map = map; |
5399 | pointer_to_map = &map->next; | |
08a40648 | 5400 | |
3271a814 NS |
5401 | if (matching_lma != map->p_paddr |
5402 | && !map->includes_filehdr && !map->includes_phdrs) | |
5403 | /* There is some padding before the first section in the | |
5404 | segment. So, we must account for that in the output | |
5405 | segment's vma. */ | |
5406 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5407 | |
252b5132 RH |
5408 | free (sections); |
5409 | continue; | |
5410 | } | |
252b5132 RH |
5411 | else |
5412 | { | |
72730e0c AM |
5413 | if (matching_lma != 0) |
5414 | { | |
5415 | /* At least one section fits inside the current segment. | |
5416 | Keep it, but modify its physical address to match the | |
5417 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5418 | map->p_paddr = matching_lma; |
72730e0c AM |
5419 | } |
5420 | else | |
5421 | { | |
5422 | /* None of the sections fitted inside the current segment. | |
5423 | Change the current segment's physical address to match | |
5424 | the LMA of the first section. */ | |
bc67d8a6 | 5425 | map->p_paddr = suggested_lma; |
72730e0c AM |
5426 | } |
5427 | ||
bc67d8a6 NC |
5428 | /* Offset the segment physical address from the lma |
5429 | to allow for space taken up by elf headers. */ | |
5430 | if (map->includes_filehdr) | |
5431 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5432 | |
bc67d8a6 NC |
5433 | if (map->includes_phdrs) |
5434 | { | |
5435 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5436 | ||
5437 | /* iehdr->e_phnum is just an estimate of the number | |
5438 | of program headers that we will need. Make a note | |
5439 | here of the number we used and the segment we chose | |
5440 | to hold these headers, so that we can adjust the | |
5441 | offset when we know the correct value. */ | |
5442 | phdr_adjust_num = iehdr->e_phnum; | |
5443 | phdr_adjust_seg = map; | |
5444 | } | |
252b5132 RH |
5445 | } |
5446 | ||
5447 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5448 | those that fit to the current segment and removing them from the |
252b5132 RH |
5449 | sections array; but making sure not to leave large gaps. Once all |
5450 | possible sections have been assigned to the current segment it is | |
5451 | added to the list of built segments and if sections still remain | |
5452 | to be assigned, a new segment is constructed before repeating | |
5453 | the loop. */ | |
5454 | isec = 0; | |
5455 | do | |
5456 | { | |
bc67d8a6 | 5457 | map->count = 0; |
252b5132 RH |
5458 | suggested_lma = 0; |
5459 | ||
5460 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5461 | for (j = 0; j < section_count; j++) |
252b5132 | 5462 | { |
bc67d8a6 | 5463 | section = sections[j]; |
252b5132 | 5464 | |
bc67d8a6 | 5465 | if (section == NULL) |
252b5132 RH |
5466 | continue; |
5467 | ||
bc67d8a6 | 5468 | output_section = section->output_section; |
252b5132 | 5469 | |
bc67d8a6 | 5470 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5471 | |
bc67d8a6 NC |
5472 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5473 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5474 | { |
bc67d8a6 | 5475 | if (map->count == 0) |
252b5132 RH |
5476 | { |
5477 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5478 | the beginning of the segment, then something is |
5479 | wrong. */ | |
5480 | if (output_section->lma != | |
5481 | (map->p_paddr | |
5482 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5483 | + (map->includes_phdrs | |
5484 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5485 | : 0))) | |
252b5132 RH |
5486 | abort (); |
5487 | } | |
5488 | else | |
5489 | { | |
5490 | asection * prev_sec; | |
252b5132 | 5491 | |
bc67d8a6 | 5492 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5493 | |
5494 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5495 | and the start of this section is more than |
5496 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5497 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5498 | maxpagesize) |
caf47ea6 | 5499 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5500 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5501 | > output_section->lma)) |
252b5132 RH |
5502 | { |
5503 | if (suggested_lma == 0) | |
bc67d8a6 | 5504 | suggested_lma = output_section->lma; |
252b5132 RH |
5505 | |
5506 | continue; | |
5507 | } | |
5508 | } | |
5509 | ||
bc67d8a6 | 5510 | map->sections[map->count++] = output_section; |
252b5132 RH |
5511 | ++isec; |
5512 | sections[j] = NULL; | |
b34976b6 | 5513 | section->segment_mark = TRUE; |
252b5132 RH |
5514 | } |
5515 | else if (suggested_lma == 0) | |
bc67d8a6 | 5516 | suggested_lma = output_section->lma; |
252b5132 RH |
5517 | } |
5518 | ||
bc67d8a6 | 5519 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5520 | |
5521 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5522 | *pointer_to_map = map; |
5523 | pointer_to_map = &map->next; | |
252b5132 | 5524 | |
bc67d8a6 | 5525 | if (isec < section_count) |
252b5132 RH |
5526 | { |
5527 | /* We still have not allocated all of the sections to | |
5528 | segments. Create a new segment here, initialise it | |
5529 | and carry on looping. */ | |
dc810e39 AM |
5530 | amt = sizeof (struct elf_segment_map); |
5531 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5532 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5533 | if (map == NULL) |
5ed6aba4 NC |
5534 | { |
5535 | free (sections); | |
5536 | return FALSE; | |
5537 | } | |
252b5132 RH |
5538 | |
5539 | /* Initialise the fields of the segment map. Set the physical | |
5540 | physical address to the LMA of the first section that has | |
5541 | not yet been assigned. */ | |
bc67d8a6 NC |
5542 | map->next = NULL; |
5543 | map->p_type = segment->p_type; | |
5544 | map->p_flags = segment->p_flags; | |
5545 | map->p_flags_valid = 1; | |
5546 | map->p_paddr = suggested_lma; | |
5547 | map->p_paddr_valid = 1; | |
5548 | map->includes_filehdr = 0; | |
5549 | map->includes_phdrs = 0; | |
252b5132 RH |
5550 | } |
5551 | } | |
bc67d8a6 | 5552 | while (isec < section_count); |
252b5132 RH |
5553 | |
5554 | free (sections); | |
5555 | } | |
5556 | ||
5557 | /* The Solaris linker creates program headers in which all the | |
5558 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5559 | file, we get confused. Check for this case, and if we find it | |
5560 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5561 | for (map = map_first; map != NULL; map = map->next) |
5562 | if (map->p_paddr != 0) | |
252b5132 | 5563 | break; |
bc67d8a6 | 5564 | if (map == NULL) |
b5f852ea NC |
5565 | for (map = map_first; map != NULL; map = map->next) |
5566 | map->p_paddr_valid = 0; | |
252b5132 | 5567 | |
bc67d8a6 NC |
5568 | elf_tdata (obfd)->segment_map = map_first; |
5569 | ||
5570 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5571 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5572 | the offset if necessary. */ |
5573 | if (phdr_adjust_seg != NULL) | |
5574 | { | |
5575 | unsigned int count; | |
c044fabd | 5576 | |
bc67d8a6 | 5577 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5578 | count++; |
252b5132 | 5579 | |
bc67d8a6 NC |
5580 | if (count > phdr_adjust_num) |
5581 | phdr_adjust_seg->p_paddr | |
5582 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5583 | } | |
c044fabd | 5584 | |
bc67d8a6 | 5585 | #undef SEGMENT_END |
eecdbe52 | 5586 | #undef SECTION_SIZE |
bc67d8a6 NC |
5587 | #undef IS_CONTAINED_BY_VMA |
5588 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5589 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5590 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5591 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5592 | #undef INCLUDE_SECTION_IN_SEGMENT |
5593 | #undef SEGMENT_AFTER_SEGMENT | |
5594 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5595 | return TRUE; |
252b5132 RH |
5596 | } |
5597 | ||
84d1d650 L |
5598 | /* Copy ELF program header information. */ |
5599 | ||
5600 | static bfd_boolean | |
5601 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5602 | { | |
5603 | Elf_Internal_Ehdr *iehdr; | |
5604 | struct elf_segment_map *map; | |
5605 | struct elf_segment_map *map_first; | |
5606 | struct elf_segment_map **pointer_to_map; | |
5607 | Elf_Internal_Phdr *segment; | |
5608 | unsigned int i; | |
5609 | unsigned int num_segments; | |
5610 | bfd_boolean phdr_included = FALSE; | |
5611 | ||
5612 | iehdr = elf_elfheader (ibfd); | |
5613 | ||
5614 | map_first = NULL; | |
5615 | pointer_to_map = &map_first; | |
5616 | ||
5617 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5618 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5619 | i < num_segments; | |
5620 | i++, segment++) | |
5621 | { | |
5622 | asection *section; | |
5623 | unsigned int section_count; | |
5624 | bfd_size_type amt; | |
5625 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5626 | asection *first_section = NULL; |
c981028a | 5627 | asection *lowest_section = NULL; |
84d1d650 L |
5628 | |
5629 | /* FIXME: Do we need to copy PT_NULL segment? */ | |
5630 | if (segment->p_type == PT_NULL) | |
5631 | continue; | |
5632 | ||
5633 | /* Compute how many sections are in this segment. */ | |
5634 | for (section = ibfd->sections, section_count = 0; | |
5635 | section != NULL; | |
5636 | section = section->next) | |
5637 | { | |
5638 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5639 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5640 | { |
53020534 | 5641 | if (!first_section) |
c981028a DJ |
5642 | first_section = lowest_section = section; |
5643 | if (section->lma < lowest_section->lma) | |
5644 | lowest_section = section; | |
3271a814 NS |
5645 | section_count++; |
5646 | } | |
84d1d650 L |
5647 | } |
5648 | ||
5649 | /* Allocate a segment map big enough to contain | |
5650 | all of the sections we have selected. */ | |
5651 | amt = sizeof (struct elf_segment_map); | |
5652 | if (section_count != 0) | |
5653 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5654 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5655 | if (map == NULL) |
5656 | return FALSE; | |
5657 | ||
5658 | /* Initialize the fields of the output segment map with the | |
5659 | input segment. */ | |
5660 | map->next = NULL; | |
5661 | map->p_type = segment->p_type; | |
5662 | map->p_flags = segment->p_flags; | |
5663 | map->p_flags_valid = 1; | |
5664 | map->p_paddr = segment->p_paddr; | |
5665 | map->p_paddr_valid = 1; | |
3f570048 AM |
5666 | map->p_align = segment->p_align; |
5667 | map->p_align_valid = 1; | |
3271a814 | 5668 | map->p_vaddr_offset = 0; |
84d1d650 L |
5669 | |
5670 | /* Determine if this segment contains the ELF file header | |
5671 | and if it contains the program headers themselves. */ | |
5672 | map->includes_filehdr = (segment->p_offset == 0 | |
5673 | && segment->p_filesz >= iehdr->e_ehsize); | |
5674 | ||
5675 | map->includes_phdrs = 0; | |
5676 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5677 | { | |
5678 | map->includes_phdrs = | |
5679 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5680 | && (segment->p_offset + segment->p_filesz | |
5681 | >= ((bfd_vma) iehdr->e_phoff | |
5682 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5683 | ||
5684 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5685 | phdr_included = TRUE; | |
5686 | } | |
5687 | ||
3271a814 NS |
5688 | if (!map->includes_phdrs && !map->includes_filehdr) |
5689 | /* There is some other padding before the first section. */ | |
c981028a | 5690 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) |
53020534 | 5691 | - segment->p_paddr); |
08a40648 | 5692 | |
84d1d650 L |
5693 | if (section_count != 0) |
5694 | { | |
5695 | unsigned int isec = 0; | |
5696 | ||
53020534 | 5697 | for (section = first_section; |
84d1d650 L |
5698 | section != NULL; |
5699 | section = section->next) | |
5700 | { | |
5701 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5702 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5703 | { |
5704 | map->sections[isec++] = section->output_section; | |
5705 | if (isec == section_count) | |
5706 | break; | |
5707 | } | |
84d1d650 L |
5708 | } |
5709 | } | |
5710 | ||
5711 | map->count = section_count; | |
5712 | *pointer_to_map = map; | |
5713 | pointer_to_map = &map->next; | |
5714 | } | |
5715 | ||
5716 | elf_tdata (obfd)->segment_map = map_first; | |
5717 | return TRUE; | |
5718 | } | |
5719 | ||
5720 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5721 | information. */ | |
5722 | ||
5723 | static bfd_boolean | |
5724 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5725 | { | |
84d1d650 L |
5726 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5727 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5728 | return TRUE; | |
5729 | ||
5730 | if (elf_tdata (ibfd)->phdr == NULL) | |
5731 | return TRUE; | |
5732 | ||
5733 | if (ibfd->xvec == obfd->xvec) | |
5734 | { | |
cb3ff1e5 NC |
5735 | /* Check to see if any sections in the input BFD |
5736 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5737 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5738 | asection *section, *osec; |
5739 | unsigned int i, num_segments; | |
5740 | Elf_Internal_Shdr *this_hdr; | |
5741 | ||
5742 | /* Initialize the segment mark field. */ | |
5743 | for (section = obfd->sections; section != NULL; | |
5744 | section = section->next) | |
5745 | section->segment_mark = FALSE; | |
5746 | ||
5747 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5748 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5749 | i < num_segments; | |
5750 | i++, segment++) | |
5751 | { | |
5f6999aa NC |
5752 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5753 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5754 | which severly confuses things, so always regenerate the segment | |
5755 | map in this case. */ | |
5756 | if (segment->p_paddr == 0 | |
5757 | && segment->p_memsz == 0 | |
5758 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5759 | goto rewrite; |
5f6999aa | 5760 | |
84d1d650 L |
5761 | for (section = ibfd->sections; |
5762 | section != NULL; section = section->next) | |
5763 | { | |
5764 | /* We mark the output section so that we know it comes | |
5765 | from the input BFD. */ | |
5766 | osec = section->output_section; | |
5767 | if (osec) | |
5768 | osec->segment_mark = TRUE; | |
5769 | ||
5770 | /* Check if this section is covered by the segment. */ | |
5771 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5772 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5773 | { | |
5774 | /* FIXME: Check if its output section is changed or | |
5775 | removed. What else do we need to check? */ | |
5776 | if (osec == NULL | |
5777 | || section->flags != osec->flags | |
5778 | || section->lma != osec->lma | |
5779 | || section->vma != osec->vma | |
5780 | || section->size != osec->size | |
5781 | || section->rawsize != osec->rawsize | |
5782 | || section->alignment_power != osec->alignment_power) | |
5783 | goto rewrite; | |
5784 | } | |
5785 | } | |
5786 | } | |
5787 | ||
cb3ff1e5 | 5788 | /* Check to see if any output section do not come from the |
84d1d650 L |
5789 | input BFD. */ |
5790 | for (section = obfd->sections; section != NULL; | |
5791 | section = section->next) | |
5792 | { | |
5793 | if (section->segment_mark == FALSE) | |
5794 | goto rewrite; | |
5795 | else | |
5796 | section->segment_mark = FALSE; | |
5797 | } | |
5798 | ||
5799 | return copy_elf_program_header (ibfd, obfd); | |
5800 | } | |
5801 | ||
5802 | rewrite: | |
5803 | return rewrite_elf_program_header (ibfd, obfd); | |
5804 | } | |
5805 | ||
ccd2ec6a L |
5806 | /* Initialize private output section information from input section. */ |
5807 | ||
5808 | bfd_boolean | |
5809 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5810 | asection *isec, | |
5811 | bfd *obfd, | |
5812 | asection *osec, | |
5813 | struct bfd_link_info *link_info) | |
5814 | ||
5815 | { | |
5816 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5817 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
5818 | ||
5819 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5820 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
5821 | return TRUE; | |
5822 | ||
e843e0f8 | 5823 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 5824 | output BFD section flags have been set to something different. |
e843e0f8 L |
5825 | elf_fake_sections will set ELF section type based on BFD |
5826 | section flags. */ | |
42bb2e33 AM |
5827 | if (elf_section_type (osec) == SHT_NULL |
5828 | && (osec->flags == isec->flags || !osec->flags)) | |
5829 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
5830 | |
5831 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
5832 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
5833 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
5834 | |
5835 | /* Set things up for objcopy and relocatable link. The output | |
5836 | SHT_GROUP section will have its elf_next_in_group pointing back | |
5837 | to the input group members. Ignore linker created group section. | |
5838 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
5839 | if (need_group) |
5840 | { | |
5841 | if (elf_sec_group (isec) == NULL | |
5842 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5843 | { | |
5844 | if (elf_section_flags (isec) & SHF_GROUP) | |
5845 | elf_section_flags (osec) |= SHF_GROUP; | |
5846 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5847 | elf_group_name (osec) = elf_group_name (isec); | |
5848 | } | |
5849 | } | |
5850 | ||
5851 | ihdr = &elf_section_data (isec)->this_hdr; | |
5852 | ||
5853 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
5854 | don't use the output section of the linked-to section since it | |
5855 | may be NULL at this point. */ | |
5856 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
5857 | { | |
5858 | ohdr = &elf_section_data (osec)->this_hdr; | |
5859 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
5860 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
5861 | } | |
5862 | ||
5863 | osec->use_rela_p = isec->use_rela_p; | |
5864 | ||
5865 | return TRUE; | |
5866 | } | |
5867 | ||
252b5132 RH |
5868 | /* Copy private section information. This copies over the entsize |
5869 | field, and sometimes the info field. */ | |
5870 | ||
b34976b6 | 5871 | bfd_boolean |
217aa764 AM |
5872 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5873 | asection *isec, | |
5874 | bfd *obfd, | |
5875 | asection *osec) | |
252b5132 RH |
5876 | { |
5877 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5878 | ||
5879 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5880 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5881 | return TRUE; |
252b5132 | 5882 | |
252b5132 RH |
5883 | ihdr = &elf_section_data (isec)->this_hdr; |
5884 | ohdr = &elf_section_data (osec)->this_hdr; | |
5885 | ||
5886 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5887 | ||
5888 | if (ihdr->sh_type == SHT_SYMTAB | |
5889 | || ihdr->sh_type == SHT_DYNSYM | |
5890 | || ihdr->sh_type == SHT_GNU_verneed | |
5891 | || ihdr->sh_type == SHT_GNU_verdef) | |
5892 | ohdr->sh_info = ihdr->sh_info; | |
5893 | ||
ccd2ec6a L |
5894 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
5895 | NULL); | |
252b5132 RH |
5896 | } |
5897 | ||
80fccad2 BW |
5898 | /* Copy private header information. */ |
5899 | ||
5900 | bfd_boolean | |
5901 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5902 | { | |
30288845 AM |
5903 | asection *isec; |
5904 | ||
80fccad2 BW |
5905 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5906 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5907 | return TRUE; | |
5908 | ||
5909 | /* Copy over private BFD data if it has not already been copied. | |
5910 | This must be done here, rather than in the copy_private_bfd_data | |
5911 | entry point, because the latter is called after the section | |
5912 | contents have been set, which means that the program headers have | |
5913 | already been worked out. */ | |
5914 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5915 | { | |
5916 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5917 | return FALSE; | |
5918 | } | |
5919 | ||
30288845 AM |
5920 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
5921 | but this might be wrong if we deleted the group section. */ | |
5922 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
5923 | if (elf_section_type (isec) == SHT_GROUP | |
5924 | && isec->output_section == NULL) | |
5925 | { | |
5926 | asection *first = elf_next_in_group (isec); | |
5927 | asection *s = first; | |
5928 | while (s != NULL) | |
5929 | { | |
5930 | if (s->output_section != NULL) | |
5931 | { | |
5932 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
5933 | elf_group_name (s->output_section) = NULL; | |
5934 | } | |
5935 | s = elf_next_in_group (s); | |
5936 | if (s == first) | |
5937 | break; | |
5938 | } | |
5939 | } | |
5940 | ||
80fccad2 BW |
5941 | return TRUE; |
5942 | } | |
5943 | ||
252b5132 RH |
5944 | /* Copy private symbol information. If this symbol is in a section |
5945 | which we did not map into a BFD section, try to map the section | |
5946 | index correctly. We use special macro definitions for the mapped | |
5947 | section indices; these definitions are interpreted by the | |
5948 | swap_out_syms function. */ | |
5949 | ||
9ad5cbcf AM |
5950 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5951 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5952 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5953 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5954 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5955 | |
b34976b6 | 5956 | bfd_boolean |
217aa764 AM |
5957 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5958 | asymbol *isymarg, | |
5959 | bfd *obfd, | |
5960 | asymbol *osymarg) | |
252b5132 RH |
5961 | { |
5962 | elf_symbol_type *isym, *osym; | |
5963 | ||
5964 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5965 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5966 | return TRUE; |
252b5132 RH |
5967 | |
5968 | isym = elf_symbol_from (ibfd, isymarg); | |
5969 | osym = elf_symbol_from (obfd, osymarg); | |
5970 | ||
5971 | if (isym != NULL | |
5972 | && osym != NULL | |
5973 | && bfd_is_abs_section (isym->symbol.section)) | |
5974 | { | |
5975 | unsigned int shndx; | |
5976 | ||
5977 | shndx = isym->internal_elf_sym.st_shndx; | |
5978 | if (shndx == elf_onesymtab (ibfd)) | |
5979 | shndx = MAP_ONESYMTAB; | |
5980 | else if (shndx == elf_dynsymtab (ibfd)) | |
5981 | shndx = MAP_DYNSYMTAB; | |
5982 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5983 | shndx = MAP_STRTAB; | |
5984 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5985 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5986 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5987 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5988 | osym->internal_elf_sym.st_shndx = shndx; |
5989 | } | |
5990 | ||
b34976b6 | 5991 | return TRUE; |
252b5132 RH |
5992 | } |
5993 | ||
5994 | /* Swap out the symbols. */ | |
5995 | ||
b34976b6 | 5996 | static bfd_boolean |
217aa764 AM |
5997 | swap_out_syms (bfd *abfd, |
5998 | struct bfd_strtab_hash **sttp, | |
5999 | int relocatable_p) | |
252b5132 | 6000 | { |
9c5bfbb7 | 6001 | const struct elf_backend_data *bed; |
079e9a2f AM |
6002 | int symcount; |
6003 | asymbol **syms; | |
6004 | struct bfd_strtab_hash *stt; | |
6005 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6006 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6007 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6008 | bfd_byte *outbound_syms; |
6009 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6010 | int idx; |
6011 | bfd_size_type amt; | |
174fd7f9 | 6012 | bfd_boolean name_local_sections; |
252b5132 RH |
6013 | |
6014 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6015 | return FALSE; |
252b5132 | 6016 | |
c044fabd | 6017 | /* Dump out the symtabs. */ |
079e9a2f AM |
6018 | stt = _bfd_elf_stringtab_init (); |
6019 | if (stt == NULL) | |
b34976b6 | 6020 | return FALSE; |
252b5132 | 6021 | |
079e9a2f AM |
6022 | bed = get_elf_backend_data (abfd); |
6023 | symcount = bfd_get_symcount (abfd); | |
6024 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6025 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6026 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6027 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6028 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6029 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6030 | |
6031 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6032 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6033 | ||
d0fb9a8d | 6034 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6035 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6036 | { |
6037 | _bfd_stringtab_free (stt); | |
6038 | return FALSE; | |
6039 | } | |
217aa764 | 6040 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6041 | |
9ad5cbcf AM |
6042 | outbound_shndx = NULL; |
6043 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6044 | if (symtab_shndx_hdr->sh_name != 0) | |
6045 | { | |
6046 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6047 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6048 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6049 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6050 | { |
6051 | _bfd_stringtab_free (stt); | |
6052 | return FALSE; | |
6053 | } | |
6054 | ||
9ad5cbcf AM |
6055 | symtab_shndx_hdr->contents = outbound_shndx; |
6056 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6057 | symtab_shndx_hdr->sh_size = amt; | |
6058 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6059 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6060 | } | |
6061 | ||
589e6347 | 6062 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6063 | { |
6064 | /* Fill in zeroth symbol and swap it out. */ | |
6065 | Elf_Internal_Sym sym; | |
6066 | sym.st_name = 0; | |
6067 | sym.st_value = 0; | |
6068 | sym.st_size = 0; | |
6069 | sym.st_info = 0; | |
6070 | sym.st_other = 0; | |
6071 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6072 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6073 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6074 | if (outbound_shndx != NULL) |
6075 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6076 | } |
252b5132 | 6077 | |
174fd7f9 RS |
6078 | name_local_sections |
6079 | = (bed->elf_backend_name_local_section_symbols | |
6080 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6081 | ||
079e9a2f AM |
6082 | syms = bfd_get_outsymbols (abfd); |
6083 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6084 | { |
252b5132 | 6085 | Elf_Internal_Sym sym; |
079e9a2f AM |
6086 | bfd_vma value = syms[idx]->value; |
6087 | elf_symbol_type *type_ptr; | |
6088 | flagword flags = syms[idx]->flags; | |
6089 | int type; | |
252b5132 | 6090 | |
174fd7f9 RS |
6091 | if (!name_local_sections |
6092 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6093 | { |
6094 | /* Local section symbols have no name. */ | |
6095 | sym.st_name = 0; | |
6096 | } | |
6097 | else | |
6098 | { | |
6099 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6100 | syms[idx]->name, | |
b34976b6 | 6101 | TRUE, FALSE); |
079e9a2f | 6102 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6103 | { |
6104 | _bfd_stringtab_free (stt); | |
6105 | return FALSE; | |
6106 | } | |
079e9a2f | 6107 | } |
252b5132 | 6108 | |
079e9a2f | 6109 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6110 | |
079e9a2f AM |
6111 | if ((flags & BSF_SECTION_SYM) == 0 |
6112 | && bfd_is_com_section (syms[idx]->section)) | |
6113 | { | |
6114 | /* ELF common symbols put the alignment into the `value' field, | |
6115 | and the size into the `size' field. This is backwards from | |
6116 | how BFD handles it, so reverse it here. */ | |
6117 | sym.st_size = value; | |
6118 | if (type_ptr == NULL | |
6119 | || type_ptr->internal_elf_sym.st_value == 0) | |
6120 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6121 | else | |
6122 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6123 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6124 | (abfd, syms[idx]->section); | |
6125 | } | |
6126 | else | |
6127 | { | |
6128 | asection *sec = syms[idx]->section; | |
6129 | int shndx; | |
252b5132 | 6130 | |
079e9a2f AM |
6131 | if (sec->output_section) |
6132 | { | |
6133 | value += sec->output_offset; | |
6134 | sec = sec->output_section; | |
6135 | } | |
589e6347 | 6136 | |
079e9a2f AM |
6137 | /* Don't add in the section vma for relocatable output. */ |
6138 | if (! relocatable_p) | |
6139 | value += sec->vma; | |
6140 | sym.st_value = value; | |
6141 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6142 | ||
6143 | if (bfd_is_abs_section (sec) | |
6144 | && type_ptr != NULL | |
6145 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6146 | { | |
6147 | /* This symbol is in a real ELF section which we did | |
6148 | not create as a BFD section. Undo the mapping done | |
6149 | by copy_private_symbol_data. */ | |
6150 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6151 | switch (shndx) | |
6152 | { | |
6153 | case MAP_ONESYMTAB: | |
6154 | shndx = elf_onesymtab (abfd); | |
6155 | break; | |
6156 | case MAP_DYNSYMTAB: | |
6157 | shndx = elf_dynsymtab (abfd); | |
6158 | break; | |
6159 | case MAP_STRTAB: | |
6160 | shndx = elf_tdata (abfd)->strtab_section; | |
6161 | break; | |
6162 | case MAP_SHSTRTAB: | |
6163 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6164 | break; | |
9ad5cbcf AM |
6165 | case MAP_SYM_SHNDX: |
6166 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6167 | break; | |
079e9a2f AM |
6168 | default: |
6169 | break; | |
6170 | } | |
6171 | } | |
6172 | else | |
6173 | { | |
6174 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6175 | |
079e9a2f AM |
6176 | if (shndx == -1) |
6177 | { | |
6178 | asection *sec2; | |
6179 | ||
6180 | /* Writing this would be a hell of a lot easier if | |
6181 | we had some decent documentation on bfd, and | |
6182 | knew what to expect of the library, and what to | |
6183 | demand of applications. For example, it | |
6184 | appears that `objcopy' might not set the | |
6185 | section of a symbol to be a section that is | |
6186 | actually in the output file. */ | |
6187 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6188 | if (sec2 == NULL) |
6189 | { | |
6190 | _bfd_error_handler (_("\ | |
6191 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6192 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6193 | sec->name); | |
811072d8 | 6194 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6195 | _bfd_stringtab_free (stt); |
589e6347 NC |
6196 | return FALSE; |
6197 | } | |
811072d8 | 6198 | |
079e9a2f AM |
6199 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6200 | BFD_ASSERT (shndx != -1); | |
6201 | } | |
6202 | } | |
252b5132 | 6203 | |
079e9a2f AM |
6204 | sym.st_shndx = shndx; |
6205 | } | |
252b5132 | 6206 | |
13ae64f3 JJ |
6207 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6208 | type = STT_TLS; | |
6209 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6210 | type = STT_FUNC; |
6211 | else if ((flags & BSF_OBJECT) != 0) | |
6212 | type = STT_OBJECT; | |
d9352518 DB |
6213 | else if ((flags & BSF_RELC) != 0) |
6214 | type = STT_RELC; | |
6215 | else if ((flags & BSF_SRELC) != 0) | |
6216 | type = STT_SRELC; | |
079e9a2f AM |
6217 | else |
6218 | type = STT_NOTYPE; | |
252b5132 | 6219 | |
13ae64f3 JJ |
6220 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6221 | type = STT_TLS; | |
6222 | ||
589e6347 | 6223 | /* Processor-specific types. */ |
079e9a2f AM |
6224 | if (type_ptr != NULL |
6225 | && bed->elf_backend_get_symbol_type) | |
6226 | type = ((*bed->elf_backend_get_symbol_type) | |
6227 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6228 | |
079e9a2f AM |
6229 | if (flags & BSF_SECTION_SYM) |
6230 | { | |
6231 | if (flags & BSF_GLOBAL) | |
6232 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6233 | else | |
6234 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6235 | } | |
6236 | else if (bfd_is_com_section (syms[idx]->section)) | |
6237 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
6238 | else if (bfd_is_und_section (syms[idx]->section)) | |
6239 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6240 | ? STB_WEAK | |
6241 | : STB_GLOBAL), | |
6242 | type); | |
6243 | else if (flags & BSF_FILE) | |
6244 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6245 | else | |
6246 | { | |
6247 | int bind = STB_LOCAL; | |
252b5132 | 6248 | |
079e9a2f AM |
6249 | if (flags & BSF_LOCAL) |
6250 | bind = STB_LOCAL; | |
6251 | else if (flags & BSF_WEAK) | |
6252 | bind = STB_WEAK; | |
6253 | else if (flags & BSF_GLOBAL) | |
6254 | bind = STB_GLOBAL; | |
252b5132 | 6255 | |
079e9a2f AM |
6256 | sym.st_info = ELF_ST_INFO (bind, type); |
6257 | } | |
252b5132 | 6258 | |
079e9a2f AM |
6259 | if (type_ptr != NULL) |
6260 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6261 | else | |
6262 | sym.st_other = 0; | |
252b5132 | 6263 | |
9ad5cbcf | 6264 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6265 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6266 | if (outbound_shndx != NULL) |
6267 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6268 | } |
252b5132 | 6269 | |
079e9a2f AM |
6270 | *sttp = stt; |
6271 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6272 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6273 | |
079e9a2f AM |
6274 | symstrtab_hdr->sh_flags = 0; |
6275 | symstrtab_hdr->sh_addr = 0; | |
6276 | symstrtab_hdr->sh_entsize = 0; | |
6277 | symstrtab_hdr->sh_link = 0; | |
6278 | symstrtab_hdr->sh_info = 0; | |
6279 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6280 | |
b34976b6 | 6281 | return TRUE; |
252b5132 RH |
6282 | } |
6283 | ||
6284 | /* Return the number of bytes required to hold the symtab vector. | |
6285 | ||
6286 | Note that we base it on the count plus 1, since we will null terminate | |
6287 | the vector allocated based on this size. However, the ELF symbol table | |
6288 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6289 | ||
6290 | long | |
217aa764 | 6291 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6292 | { |
6293 | long symcount; | |
6294 | long symtab_size; | |
6295 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6296 | ||
6297 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6298 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6299 | if (symcount > 0) | |
6300 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6301 | |
6302 | return symtab_size; | |
6303 | } | |
6304 | ||
6305 | long | |
217aa764 | 6306 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6307 | { |
6308 | long symcount; | |
6309 | long symtab_size; | |
6310 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6311 | ||
6312 | if (elf_dynsymtab (abfd) == 0) | |
6313 | { | |
6314 | bfd_set_error (bfd_error_invalid_operation); | |
6315 | return -1; | |
6316 | } | |
6317 | ||
6318 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6319 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6320 | if (symcount > 0) | |
6321 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6322 | |
6323 | return symtab_size; | |
6324 | } | |
6325 | ||
6326 | long | |
217aa764 AM |
6327 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6328 | sec_ptr asect) | |
252b5132 RH |
6329 | { |
6330 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6331 | } | |
6332 | ||
6333 | /* Canonicalize the relocs. */ | |
6334 | ||
6335 | long | |
217aa764 AM |
6336 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6337 | sec_ptr section, | |
6338 | arelent **relptr, | |
6339 | asymbol **symbols) | |
252b5132 RH |
6340 | { |
6341 | arelent *tblptr; | |
6342 | unsigned int i; | |
9c5bfbb7 | 6343 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6344 | |
b34976b6 | 6345 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6346 | return -1; |
6347 | ||
6348 | tblptr = section->relocation; | |
6349 | for (i = 0; i < section->reloc_count; i++) | |
6350 | *relptr++ = tblptr++; | |
6351 | ||
6352 | *relptr = NULL; | |
6353 | ||
6354 | return section->reloc_count; | |
6355 | } | |
6356 | ||
6357 | long | |
6cee3f79 | 6358 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6359 | { |
9c5bfbb7 | 6360 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6361 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6362 | |
6363 | if (symcount >= 0) | |
6364 | bfd_get_symcount (abfd) = symcount; | |
6365 | return symcount; | |
6366 | } | |
6367 | ||
6368 | long | |
217aa764 AM |
6369 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6370 | asymbol **allocation) | |
252b5132 | 6371 | { |
9c5bfbb7 | 6372 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6373 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6374 | |
6375 | if (symcount >= 0) | |
6376 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6377 | return symcount; | |
252b5132 RH |
6378 | } |
6379 | ||
8615f3f2 AM |
6380 | /* Return the size required for the dynamic reloc entries. Any loadable |
6381 | section that was actually installed in the BFD, and has type SHT_REL | |
6382 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6383 | dynamic reloc section. */ | |
252b5132 RH |
6384 | |
6385 | long | |
217aa764 | 6386 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6387 | { |
6388 | long ret; | |
6389 | asection *s; | |
6390 | ||
6391 | if (elf_dynsymtab (abfd) == 0) | |
6392 | { | |
6393 | bfd_set_error (bfd_error_invalid_operation); | |
6394 | return -1; | |
6395 | } | |
6396 | ||
6397 | ret = sizeof (arelent *); | |
6398 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6399 | if ((s->flags & SEC_LOAD) != 0 |
6400 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6401 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6402 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6403 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6404 | * sizeof (arelent *)); |
6405 | ||
6406 | return ret; | |
6407 | } | |
6408 | ||
8615f3f2 AM |
6409 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6410 | dynamic relocations as a single block, although they are actually | |
6411 | associated with particular sections; the interface, which was | |
6412 | designed for SunOS style shared libraries, expects that there is only | |
6413 | one set of dynamic relocs. Any loadable section that was actually | |
6414 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6415 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6416 | |
6417 | long | |
217aa764 AM |
6418 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6419 | arelent **storage, | |
6420 | asymbol **syms) | |
252b5132 | 6421 | { |
217aa764 | 6422 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6423 | asection *s; |
6424 | long ret; | |
6425 | ||
6426 | if (elf_dynsymtab (abfd) == 0) | |
6427 | { | |
6428 | bfd_set_error (bfd_error_invalid_operation); | |
6429 | return -1; | |
6430 | } | |
6431 | ||
6432 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6433 | ret = 0; | |
6434 | for (s = abfd->sections; s != NULL; s = s->next) | |
6435 | { | |
8615f3f2 AM |
6436 | if ((s->flags & SEC_LOAD) != 0 |
6437 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6438 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6439 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6440 | { | |
6441 | arelent *p; | |
6442 | long count, i; | |
6443 | ||
b34976b6 | 6444 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6445 | return -1; |
eea6121a | 6446 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6447 | p = s->relocation; |
6448 | for (i = 0; i < count; i++) | |
6449 | *storage++ = p++; | |
6450 | ret += count; | |
6451 | } | |
6452 | } | |
6453 | ||
6454 | *storage = NULL; | |
6455 | ||
6456 | return ret; | |
6457 | } | |
6458 | \f | |
6459 | /* Read in the version information. */ | |
6460 | ||
b34976b6 | 6461 | bfd_boolean |
fc0e6df6 | 6462 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6463 | { |
6464 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6465 | unsigned int freeidx = 0; |
6466 | ||
6467 | if (elf_dynverref (abfd) != 0) | |
6468 | { | |
6469 | Elf_Internal_Shdr *hdr; | |
6470 | Elf_External_Verneed *everneed; | |
6471 | Elf_Internal_Verneed *iverneed; | |
6472 | unsigned int i; | |
d0fb9a8d | 6473 | bfd_byte *contents_end; |
fc0e6df6 PB |
6474 | |
6475 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6476 | ||
d0fb9a8d JJ |
6477 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6478 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6479 | if (elf_tdata (abfd)->verref == NULL) |
6480 | goto error_return; | |
6481 | ||
6482 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6483 | ||
6484 | contents = bfd_malloc (hdr->sh_size); | |
6485 | if (contents == NULL) | |
d0fb9a8d JJ |
6486 | { |
6487 | error_return_verref: | |
6488 | elf_tdata (abfd)->verref = NULL; | |
6489 | elf_tdata (abfd)->cverrefs = 0; | |
6490 | goto error_return; | |
6491 | } | |
fc0e6df6 PB |
6492 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6493 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6494 | goto error_return_verref; |
fc0e6df6 | 6495 | |
d0fb9a8d JJ |
6496 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6497 | goto error_return_verref; | |
6498 | ||
6499 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6500 | == sizeof (Elf_External_Vernaux)); | |
6501 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6502 | everneed = (Elf_External_Verneed *) contents; |
6503 | iverneed = elf_tdata (abfd)->verref; | |
6504 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6505 | { | |
6506 | Elf_External_Vernaux *evernaux; | |
6507 | Elf_Internal_Vernaux *ivernaux; | |
6508 | unsigned int j; | |
6509 | ||
6510 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6511 | ||
6512 | iverneed->vn_bfd = abfd; | |
6513 | ||
6514 | iverneed->vn_filename = | |
6515 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6516 | iverneed->vn_file); | |
6517 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6518 | goto error_return_verref; |
fc0e6df6 | 6519 | |
d0fb9a8d JJ |
6520 | if (iverneed->vn_cnt == 0) |
6521 | iverneed->vn_auxptr = NULL; | |
6522 | else | |
6523 | { | |
6524 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6525 | sizeof (Elf_Internal_Vernaux)); | |
6526 | if (iverneed->vn_auxptr == NULL) | |
6527 | goto error_return_verref; | |
6528 | } | |
6529 | ||
6530 | if (iverneed->vn_aux | |
6531 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6532 | goto error_return_verref; | |
fc0e6df6 PB |
6533 | |
6534 | evernaux = ((Elf_External_Vernaux *) | |
6535 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6536 | ivernaux = iverneed->vn_auxptr; | |
6537 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6538 | { | |
6539 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6540 | ||
6541 | ivernaux->vna_nodename = | |
6542 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6543 | ivernaux->vna_name); | |
6544 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6545 | goto error_return_verref; |
fc0e6df6 PB |
6546 | |
6547 | if (j + 1 < iverneed->vn_cnt) | |
6548 | ivernaux->vna_nextptr = ivernaux + 1; | |
6549 | else | |
6550 | ivernaux->vna_nextptr = NULL; | |
6551 | ||
d0fb9a8d JJ |
6552 | if (ivernaux->vna_next |
6553 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6554 | goto error_return_verref; | |
6555 | ||
fc0e6df6 PB |
6556 | evernaux = ((Elf_External_Vernaux *) |
6557 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6558 | ||
6559 | if (ivernaux->vna_other > freeidx) | |
6560 | freeidx = ivernaux->vna_other; | |
6561 | } | |
6562 | ||
6563 | if (i + 1 < hdr->sh_info) | |
6564 | iverneed->vn_nextref = iverneed + 1; | |
6565 | else | |
6566 | iverneed->vn_nextref = NULL; | |
6567 | ||
d0fb9a8d JJ |
6568 | if (iverneed->vn_next |
6569 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6570 | goto error_return_verref; | |
6571 | ||
fc0e6df6 PB |
6572 | everneed = ((Elf_External_Verneed *) |
6573 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6574 | } | |
6575 | ||
6576 | free (contents); | |
6577 | contents = NULL; | |
6578 | } | |
252b5132 RH |
6579 | |
6580 | if (elf_dynverdef (abfd) != 0) | |
6581 | { | |
6582 | Elf_Internal_Shdr *hdr; | |
6583 | Elf_External_Verdef *everdef; | |
6584 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6585 | Elf_Internal_Verdef *iverdefarr; |
6586 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6587 | unsigned int i; |
062e2358 | 6588 | unsigned int maxidx; |
d0fb9a8d | 6589 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6590 | |
6591 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6592 | ||
217aa764 | 6593 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6594 | if (contents == NULL) |
6595 | goto error_return; | |
6596 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6597 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6598 | goto error_return; |
6599 | ||
d0fb9a8d JJ |
6600 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6601 | goto error_return; | |
6602 | ||
6603 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6604 | >= sizeof (Elf_External_Verdaux)); | |
6605 | contents_end_def = contents + hdr->sh_size | |
6606 | - sizeof (Elf_External_Verdef); | |
6607 | contents_end_aux = contents + hdr->sh_size | |
6608 | - sizeof (Elf_External_Verdaux); | |
6609 | ||
f631889e UD |
6610 | /* We know the number of entries in the section but not the maximum |
6611 | index. Therefore we have to run through all entries and find | |
6612 | the maximum. */ | |
252b5132 | 6613 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6614 | maxidx = 0; |
6615 | for (i = 0; i < hdr->sh_info; ++i) | |
6616 | { | |
6617 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6618 | ||
062e2358 AM |
6619 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6620 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6621 | |
d0fb9a8d JJ |
6622 | if (iverdefmem.vd_next |
6623 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6624 | goto error_return; | |
6625 | ||
f631889e UD |
6626 | everdef = ((Elf_External_Verdef *) |
6627 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6628 | } | |
6629 | ||
fc0e6df6 PB |
6630 | if (default_imported_symver) |
6631 | { | |
6632 | if (freeidx > maxidx) | |
6633 | maxidx = ++freeidx; | |
6634 | else | |
6635 | freeidx = ++maxidx; | |
6636 | } | |
d0fb9a8d JJ |
6637 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6638 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6639 | if (elf_tdata (abfd)->verdef == NULL) |
6640 | goto error_return; | |
6641 | ||
6642 | elf_tdata (abfd)->cverdefs = maxidx; | |
6643 | ||
6644 | everdef = (Elf_External_Verdef *) contents; | |
6645 | iverdefarr = elf_tdata (abfd)->verdef; | |
6646 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6647 | { |
6648 | Elf_External_Verdaux *everdaux; | |
6649 | Elf_Internal_Verdaux *iverdaux; | |
6650 | unsigned int j; | |
6651 | ||
f631889e UD |
6652 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6653 | ||
d0fb9a8d JJ |
6654 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6655 | { | |
6656 | error_return_verdef: | |
6657 | elf_tdata (abfd)->verdef = NULL; | |
6658 | elf_tdata (abfd)->cverdefs = 0; | |
6659 | goto error_return; | |
6660 | } | |
6661 | ||
f631889e UD |
6662 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6663 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6664 | |
6665 | iverdef->vd_bfd = abfd; | |
6666 | ||
d0fb9a8d JJ |
6667 | if (iverdef->vd_cnt == 0) |
6668 | iverdef->vd_auxptr = NULL; | |
6669 | else | |
6670 | { | |
6671 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6672 | sizeof (Elf_Internal_Verdaux)); | |
6673 | if (iverdef->vd_auxptr == NULL) | |
6674 | goto error_return_verdef; | |
6675 | } | |
6676 | ||
6677 | if (iverdef->vd_aux | |
6678 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6679 | goto error_return_verdef; | |
252b5132 RH |
6680 | |
6681 | everdaux = ((Elf_External_Verdaux *) | |
6682 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6683 | iverdaux = iverdef->vd_auxptr; | |
6684 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6685 | { | |
6686 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6687 | ||
6688 | iverdaux->vda_nodename = | |
6689 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6690 | iverdaux->vda_name); | |
6691 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6692 | goto error_return_verdef; |
252b5132 RH |
6693 | |
6694 | if (j + 1 < iverdef->vd_cnt) | |
6695 | iverdaux->vda_nextptr = iverdaux + 1; | |
6696 | else | |
6697 | iverdaux->vda_nextptr = NULL; | |
6698 | ||
d0fb9a8d JJ |
6699 | if (iverdaux->vda_next |
6700 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6701 | goto error_return_verdef; | |
6702 | ||
252b5132 RH |
6703 | everdaux = ((Elf_External_Verdaux *) |
6704 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6705 | } | |
6706 | ||
d0fb9a8d JJ |
6707 | if (iverdef->vd_cnt) |
6708 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6709 | |
d0fb9a8d | 6710 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6711 | iverdef->vd_nextdef = iverdef + 1; |
6712 | else | |
6713 | iverdef->vd_nextdef = NULL; | |
6714 | ||
6715 | everdef = ((Elf_External_Verdef *) | |
6716 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6717 | } | |
6718 | ||
6719 | free (contents); | |
6720 | contents = NULL; | |
6721 | } | |
fc0e6df6 | 6722 | else if (default_imported_symver) |
252b5132 | 6723 | { |
fc0e6df6 PB |
6724 | if (freeidx < 3) |
6725 | freeidx = 3; | |
6726 | else | |
6727 | freeidx++; | |
252b5132 | 6728 | |
d0fb9a8d JJ |
6729 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6730 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6731 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6732 | goto error_return; |
6733 | ||
fc0e6df6 PB |
6734 | elf_tdata (abfd)->cverdefs = freeidx; |
6735 | } | |
252b5132 | 6736 | |
fc0e6df6 PB |
6737 | /* Create a default version based on the soname. */ |
6738 | if (default_imported_symver) | |
6739 | { | |
6740 | Elf_Internal_Verdef *iverdef; | |
6741 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6742 | |
fc0e6df6 | 6743 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6744 | |
fc0e6df6 PB |
6745 | iverdef->vd_version = VER_DEF_CURRENT; |
6746 | iverdef->vd_flags = 0; | |
6747 | iverdef->vd_ndx = freeidx; | |
6748 | iverdef->vd_cnt = 1; | |
252b5132 | 6749 | |
fc0e6df6 | 6750 | iverdef->vd_bfd = abfd; |
252b5132 | 6751 | |
fc0e6df6 PB |
6752 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6753 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6754 | goto error_return_verdef; |
fc0e6df6 | 6755 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6756 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6757 | if (iverdef->vd_auxptr == NULL) | |
6758 | goto error_return_verdef; | |
252b5132 | 6759 | |
fc0e6df6 PB |
6760 | iverdaux = iverdef->vd_auxptr; |
6761 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6762 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6763 | } |
6764 | ||
b34976b6 | 6765 | return TRUE; |
252b5132 RH |
6766 | |
6767 | error_return: | |
5ed6aba4 | 6768 | if (contents != NULL) |
252b5132 | 6769 | free (contents); |
b34976b6 | 6770 | return FALSE; |
252b5132 RH |
6771 | } |
6772 | \f | |
6773 | asymbol * | |
217aa764 | 6774 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6775 | { |
6776 | elf_symbol_type *newsym; | |
dc810e39 | 6777 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6778 | |
217aa764 | 6779 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6780 | if (!newsym) |
6781 | return NULL; | |
6782 | else | |
6783 | { | |
6784 | newsym->symbol.the_bfd = abfd; | |
6785 | return &newsym->symbol; | |
6786 | } | |
6787 | } | |
6788 | ||
6789 | void | |
217aa764 AM |
6790 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6791 | asymbol *symbol, | |
6792 | symbol_info *ret) | |
252b5132 RH |
6793 | { |
6794 | bfd_symbol_info (symbol, ret); | |
6795 | } | |
6796 | ||
6797 | /* Return whether a symbol name implies a local symbol. Most targets | |
6798 | use this function for the is_local_label_name entry point, but some | |
6799 | override it. */ | |
6800 | ||
b34976b6 | 6801 | bfd_boolean |
217aa764 AM |
6802 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6803 | const char *name) | |
252b5132 RH |
6804 | { |
6805 | /* Normal local symbols start with ``.L''. */ | |
6806 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6807 | return TRUE; |
252b5132 RH |
6808 | |
6809 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6810 | DWARF debugging symbols starting with ``..''. */ | |
6811 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6812 | return TRUE; |
252b5132 RH |
6813 | |
6814 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6815 | emitting DWARF debugging output. I suspect this is actually a | |
6816 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6817 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6818 | underscore to be emitted on some ELF targets). For ease of use, | |
6819 | we treat such symbols as local. */ | |
6820 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6821 | return TRUE; |
252b5132 | 6822 | |
b34976b6 | 6823 | return FALSE; |
252b5132 RH |
6824 | } |
6825 | ||
6826 | alent * | |
217aa764 AM |
6827 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6828 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6829 | { |
6830 | abort (); | |
6831 | return NULL; | |
6832 | } | |
6833 | ||
b34976b6 | 6834 | bfd_boolean |
217aa764 AM |
6835 | _bfd_elf_set_arch_mach (bfd *abfd, |
6836 | enum bfd_architecture arch, | |
6837 | unsigned long machine) | |
252b5132 RH |
6838 | { |
6839 | /* If this isn't the right architecture for this backend, and this | |
6840 | isn't the generic backend, fail. */ | |
6841 | if (arch != get_elf_backend_data (abfd)->arch | |
6842 | && arch != bfd_arch_unknown | |
6843 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6844 | return FALSE; |
252b5132 RH |
6845 | |
6846 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6847 | } | |
6848 | ||
d1fad7c6 NC |
6849 | /* Find the function to a particular section and offset, |
6850 | for error reporting. */ | |
252b5132 | 6851 | |
b34976b6 | 6852 | static bfd_boolean |
217aa764 AM |
6853 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6854 | asection *section, | |
6855 | asymbol **symbols, | |
6856 | bfd_vma offset, | |
6857 | const char **filename_ptr, | |
6858 | const char **functionname_ptr) | |
252b5132 | 6859 | { |
252b5132 | 6860 | const char *filename; |
57426232 | 6861 | asymbol *func, *file; |
252b5132 RH |
6862 | bfd_vma low_func; |
6863 | asymbol **p; | |
57426232 JB |
6864 | /* ??? Given multiple file symbols, it is impossible to reliably |
6865 | choose the right file name for global symbols. File symbols are | |
6866 | local symbols, and thus all file symbols must sort before any | |
6867 | global symbols. The ELF spec may be interpreted to say that a | |
6868 | file symbol must sort before other local symbols, but currently | |
6869 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6870 | make a better choice of file name for local symbols by ignoring | |
6871 | file symbols appearing after a given local symbol. */ | |
6872 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6873 | |
252b5132 RH |
6874 | filename = NULL; |
6875 | func = NULL; | |
57426232 | 6876 | file = NULL; |
252b5132 | 6877 | low_func = 0; |
57426232 | 6878 | state = nothing_seen; |
252b5132 RH |
6879 | |
6880 | for (p = symbols; *p != NULL; p++) | |
6881 | { | |
6882 | elf_symbol_type *q; | |
6883 | ||
6884 | q = (elf_symbol_type *) *p; | |
6885 | ||
252b5132 RH |
6886 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6887 | { | |
6888 | default: | |
6889 | break; | |
6890 | case STT_FILE: | |
57426232 JB |
6891 | file = &q->symbol; |
6892 | if (state == symbol_seen) | |
6893 | state = file_after_symbol_seen; | |
6894 | continue; | |
252b5132 RH |
6895 | case STT_NOTYPE: |
6896 | case STT_FUNC: | |
6b40fcba | 6897 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6898 | && q->symbol.value >= low_func |
6899 | && q->symbol.value <= offset) | |
6900 | { | |
6901 | func = (asymbol *) q; | |
6902 | low_func = q->symbol.value; | |
a1923858 AM |
6903 | filename = NULL; |
6904 | if (file != NULL | |
6905 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
6906 | || state != file_after_symbol_seen)) | |
57426232 | 6907 | filename = bfd_asymbol_name (file); |
252b5132 RH |
6908 | } |
6909 | break; | |
6910 | } | |
57426232 JB |
6911 | if (state == nothing_seen) |
6912 | state = symbol_seen; | |
252b5132 RH |
6913 | } |
6914 | ||
6915 | if (func == NULL) | |
b34976b6 | 6916 | return FALSE; |
252b5132 | 6917 | |
d1fad7c6 NC |
6918 | if (filename_ptr) |
6919 | *filename_ptr = filename; | |
6920 | if (functionname_ptr) | |
6921 | *functionname_ptr = bfd_asymbol_name (func); | |
6922 | ||
b34976b6 | 6923 | return TRUE; |
d1fad7c6 NC |
6924 | } |
6925 | ||
6926 | /* Find the nearest line to a particular section and offset, | |
6927 | for error reporting. */ | |
6928 | ||
b34976b6 | 6929 | bfd_boolean |
217aa764 AM |
6930 | _bfd_elf_find_nearest_line (bfd *abfd, |
6931 | asection *section, | |
6932 | asymbol **symbols, | |
6933 | bfd_vma offset, | |
6934 | const char **filename_ptr, | |
6935 | const char **functionname_ptr, | |
6936 | unsigned int *line_ptr) | |
d1fad7c6 | 6937 | { |
b34976b6 | 6938 | bfd_boolean found; |
d1fad7c6 NC |
6939 | |
6940 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6941 | filename_ptr, functionname_ptr, |
6942 | line_ptr)) | |
d1fad7c6 NC |
6943 | { |
6944 | if (!*functionname_ptr) | |
4e8a9624 AM |
6945 | elf_find_function (abfd, section, symbols, offset, |
6946 | *filename_ptr ? NULL : filename_ptr, | |
6947 | functionname_ptr); | |
6948 | ||
b34976b6 | 6949 | return TRUE; |
d1fad7c6 NC |
6950 | } |
6951 | ||
6952 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6953 | filename_ptr, functionname_ptr, |
6954 | line_ptr, 0, | |
6955 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6956 | { |
6957 | if (!*functionname_ptr) | |
4e8a9624 AM |
6958 | elf_find_function (abfd, section, symbols, offset, |
6959 | *filename_ptr ? NULL : filename_ptr, | |
6960 | functionname_ptr); | |
6961 | ||
b34976b6 | 6962 | return TRUE; |
d1fad7c6 NC |
6963 | } |
6964 | ||
6965 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6966 | &found, filename_ptr, |
6967 | functionname_ptr, line_ptr, | |
6968 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6969 | return FALSE; |
dc43ada5 | 6970 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6971 | return TRUE; |
d1fad7c6 NC |
6972 | |
6973 | if (symbols == NULL) | |
b34976b6 | 6974 | return FALSE; |
d1fad7c6 NC |
6975 | |
6976 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6977 | filename_ptr, functionname_ptr)) |
b34976b6 | 6978 | return FALSE; |
d1fad7c6 | 6979 | |
252b5132 | 6980 | *line_ptr = 0; |
b34976b6 | 6981 | return TRUE; |
252b5132 RH |
6982 | } |
6983 | ||
5420f73d L |
6984 | /* Find the line for a symbol. */ |
6985 | ||
6986 | bfd_boolean | |
6987 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
6988 | const char **filename_ptr, unsigned int *line_ptr) | |
6989 | { | |
6990 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
6991 | filename_ptr, line_ptr, 0, | |
6992 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
6993 | } | |
6994 | ||
4ab527b0 FF |
6995 | /* After a call to bfd_find_nearest_line, successive calls to |
6996 | bfd_find_inliner_info can be used to get source information about | |
6997 | each level of function inlining that terminated at the address | |
6998 | passed to bfd_find_nearest_line. Currently this is only supported | |
6999 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7000 | ||
7001 | bfd_boolean | |
7002 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7003 | const char **filename_ptr, | |
7004 | const char **functionname_ptr, | |
7005 | unsigned int *line_ptr) | |
7006 | { | |
7007 | bfd_boolean found; | |
7008 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7009 | functionname_ptr, line_ptr, | |
7010 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7011 | return found; | |
7012 | } | |
7013 | ||
252b5132 | 7014 | int |
a6b96beb | 7015 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7016 | { |
8ded5a0f AM |
7017 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7018 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7019 | |
a6b96beb | 7020 | if (!info->relocatable) |
8ded5a0f | 7021 | { |
62d7a5f6 | 7022 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7023 | |
62d7a5f6 AM |
7024 | if (phdr_size == (bfd_size_type) -1) |
7025 | { | |
7026 | struct elf_segment_map *m; | |
7027 | ||
7028 | phdr_size = 0; | |
7029 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7030 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7031 | |
62d7a5f6 AM |
7032 | if (phdr_size == 0) |
7033 | phdr_size = get_program_header_size (abfd, info); | |
7034 | } | |
8ded5a0f AM |
7035 | |
7036 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7037 | ret += phdr_size; | |
7038 | } | |
7039 | ||
252b5132 RH |
7040 | return ret; |
7041 | } | |
7042 | ||
b34976b6 | 7043 | bfd_boolean |
217aa764 AM |
7044 | _bfd_elf_set_section_contents (bfd *abfd, |
7045 | sec_ptr section, | |
0f867abe | 7046 | const void *location, |
217aa764 AM |
7047 | file_ptr offset, |
7048 | bfd_size_type count) | |
252b5132 RH |
7049 | { |
7050 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7051 | bfd_signed_vma pos; |
252b5132 RH |
7052 | |
7053 | if (! abfd->output_has_begun | |
217aa764 | 7054 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7055 | return FALSE; |
252b5132 RH |
7056 | |
7057 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7058 | pos = hdr->sh_offset + offset; |
7059 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7060 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7061 | return FALSE; |
252b5132 | 7062 | |
b34976b6 | 7063 | return TRUE; |
252b5132 RH |
7064 | } |
7065 | ||
7066 | void | |
217aa764 AM |
7067 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7068 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7069 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7070 | { |
7071 | abort (); | |
7072 | } | |
7073 | ||
252b5132 RH |
7074 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7075 | ||
b34976b6 | 7076 | bfd_boolean |
217aa764 | 7077 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7078 | { |
c044fabd | 7079 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7080 | |
7081 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7082 | { | |
7083 | bfd_reloc_code_real_type code; | |
7084 | reloc_howto_type *howto; | |
7085 | ||
7086 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7087 | equivalent ELF reloc. */ |
252b5132 RH |
7088 | |
7089 | if (areloc->howto->pc_relative) | |
7090 | { | |
7091 | switch (areloc->howto->bitsize) | |
7092 | { | |
7093 | case 8: | |
7094 | code = BFD_RELOC_8_PCREL; | |
7095 | break; | |
7096 | case 12: | |
7097 | code = BFD_RELOC_12_PCREL; | |
7098 | break; | |
7099 | case 16: | |
7100 | code = BFD_RELOC_16_PCREL; | |
7101 | break; | |
7102 | case 24: | |
7103 | code = BFD_RELOC_24_PCREL; | |
7104 | break; | |
7105 | case 32: | |
7106 | code = BFD_RELOC_32_PCREL; | |
7107 | break; | |
7108 | case 64: | |
7109 | code = BFD_RELOC_64_PCREL; | |
7110 | break; | |
7111 | default: | |
7112 | goto fail; | |
7113 | } | |
7114 | ||
7115 | howto = bfd_reloc_type_lookup (abfd, code); | |
7116 | ||
7117 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7118 | { | |
7119 | if (howto->pcrel_offset) | |
7120 | areloc->addend += areloc->address; | |
7121 | else | |
7122 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7123 | } | |
7124 | } | |
7125 | else | |
7126 | { | |
7127 | switch (areloc->howto->bitsize) | |
7128 | { | |
7129 | case 8: | |
7130 | code = BFD_RELOC_8; | |
7131 | break; | |
7132 | case 14: | |
7133 | code = BFD_RELOC_14; | |
7134 | break; | |
7135 | case 16: | |
7136 | code = BFD_RELOC_16; | |
7137 | break; | |
7138 | case 26: | |
7139 | code = BFD_RELOC_26; | |
7140 | break; | |
7141 | case 32: | |
7142 | code = BFD_RELOC_32; | |
7143 | break; | |
7144 | case 64: | |
7145 | code = BFD_RELOC_64; | |
7146 | break; | |
7147 | default: | |
7148 | goto fail; | |
7149 | } | |
7150 | ||
7151 | howto = bfd_reloc_type_lookup (abfd, code); | |
7152 | } | |
7153 | ||
7154 | if (howto) | |
7155 | areloc->howto = howto; | |
7156 | else | |
7157 | goto fail; | |
7158 | } | |
7159 | ||
b34976b6 | 7160 | return TRUE; |
252b5132 RH |
7161 | |
7162 | fail: | |
7163 | (*_bfd_error_handler) | |
d003868e AM |
7164 | (_("%B: unsupported relocation type %s"), |
7165 | abfd, areloc->howto->name); | |
252b5132 | 7166 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7167 | return FALSE; |
252b5132 RH |
7168 | } |
7169 | ||
b34976b6 | 7170 | bfd_boolean |
217aa764 | 7171 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7172 | { |
7173 | if (bfd_get_format (abfd) == bfd_object) | |
7174 | { | |
b25e3d87 | 7175 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7176 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7177 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7178 | } |
7179 | ||
7180 | return _bfd_generic_close_and_cleanup (abfd); | |
7181 | } | |
7182 | ||
7183 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7184 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7185 | range-checking to interfere. There is nothing else to do in processing | |
7186 | this reloc. */ | |
7187 | ||
7188 | bfd_reloc_status_type | |
217aa764 AM |
7189 | _bfd_elf_rel_vtable_reloc_fn |
7190 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7191 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7192 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7193 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7194 | { |
7195 | return bfd_reloc_ok; | |
7196 | } | |
252b5132 RH |
7197 | \f |
7198 | /* Elf core file support. Much of this only works on native | |
7199 | toolchains, since we rely on knowing the | |
7200 | machine-dependent procfs structure in order to pick | |
c044fabd | 7201 | out details about the corefile. */ |
252b5132 RH |
7202 | |
7203 | #ifdef HAVE_SYS_PROCFS_H | |
7204 | # include <sys/procfs.h> | |
7205 | #endif | |
7206 | ||
c044fabd | 7207 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7208 | |
7209 | static int | |
217aa764 | 7210 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7211 | { |
7212 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7213 | + (elf_tdata (abfd)->core_pid)); | |
7214 | } | |
7215 | ||
252b5132 RH |
7216 | /* If there isn't a section called NAME, make one, using |
7217 | data from SECT. Note, this function will generate a | |
7218 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7219 | overwrite it. */ |
252b5132 | 7220 | |
b34976b6 | 7221 | static bfd_boolean |
217aa764 | 7222 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7223 | { |
c044fabd | 7224 | asection *sect2; |
252b5132 RH |
7225 | |
7226 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7227 | return TRUE; |
252b5132 | 7228 | |
117ed4f8 | 7229 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7230 | if (sect2 == NULL) |
b34976b6 | 7231 | return FALSE; |
252b5132 | 7232 | |
eea6121a | 7233 | sect2->size = sect->size; |
252b5132 | 7234 | sect2->filepos = sect->filepos; |
252b5132 | 7235 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7236 | return TRUE; |
252b5132 RH |
7237 | } |
7238 | ||
bb0082d6 AM |
7239 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7240 | actually creates up to two pseudosections: | |
7241 | - For the single-threaded case, a section named NAME, unless | |
7242 | such a section already exists. | |
7243 | - For the multi-threaded case, a section named "NAME/PID", where | |
7244 | PID is elfcore_make_pid (abfd). | |
7245 | Both pseudosections have identical contents. */ | |
b34976b6 | 7246 | bfd_boolean |
217aa764 AM |
7247 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7248 | char *name, | |
7249 | size_t size, | |
7250 | ufile_ptr filepos) | |
bb0082d6 AM |
7251 | { |
7252 | char buf[100]; | |
7253 | char *threaded_name; | |
d4c88bbb | 7254 | size_t len; |
bb0082d6 AM |
7255 | asection *sect; |
7256 | ||
7257 | /* Build the section name. */ | |
7258 | ||
7259 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7260 | len = strlen (buf) + 1; |
217aa764 | 7261 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7262 | if (threaded_name == NULL) |
b34976b6 | 7263 | return FALSE; |
d4c88bbb | 7264 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7265 | |
117ed4f8 AM |
7266 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7267 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7268 | if (sect == NULL) |
b34976b6 | 7269 | return FALSE; |
eea6121a | 7270 | sect->size = size; |
bb0082d6 | 7271 | sect->filepos = filepos; |
bb0082d6 AM |
7272 | sect->alignment_power = 2; |
7273 | ||
936e320b | 7274 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7275 | } |
7276 | ||
252b5132 | 7277 | /* prstatus_t exists on: |
4a938328 | 7278 | solaris 2.5+ |
252b5132 RH |
7279 | linux 2.[01] + glibc |
7280 | unixware 4.2 | |
7281 | */ | |
7282 | ||
7283 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7284 | |
b34976b6 | 7285 | static bfd_boolean |
217aa764 | 7286 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7287 | { |
eea6121a | 7288 | size_t size; |
7ee38065 | 7289 | int offset; |
252b5132 | 7290 | |
4a938328 MS |
7291 | if (note->descsz == sizeof (prstatus_t)) |
7292 | { | |
7293 | prstatus_t prstat; | |
252b5132 | 7294 | |
eea6121a | 7295 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7296 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7297 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7298 | |
fa49d224 NC |
7299 | /* Do not overwrite the core signal if it |
7300 | has already been set by another thread. */ | |
7301 | if (elf_tdata (abfd)->core_signal == 0) | |
7302 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7303 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7304 | |
4a938328 MS |
7305 | /* pr_who exists on: |
7306 | solaris 2.5+ | |
7307 | unixware 4.2 | |
7308 | pr_who doesn't exist on: | |
7309 | linux 2.[01] | |
7310 | */ | |
252b5132 | 7311 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7312 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7313 | #endif |
4a938328 | 7314 | } |
7ee38065 | 7315 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7316 | else if (note->descsz == sizeof (prstatus32_t)) |
7317 | { | |
7318 | /* 64-bit host, 32-bit corefile */ | |
7319 | prstatus32_t prstat; | |
7320 | ||
eea6121a | 7321 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7322 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7323 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7324 | ||
fa49d224 NC |
7325 | /* Do not overwrite the core signal if it |
7326 | has already been set by another thread. */ | |
7327 | if (elf_tdata (abfd)->core_signal == 0) | |
7328 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7329 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7330 | ||
7331 | /* pr_who exists on: | |
7332 | solaris 2.5+ | |
7333 | unixware 4.2 | |
7334 | pr_who doesn't exist on: | |
7335 | linux 2.[01] | |
7336 | */ | |
7ee38065 | 7337 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7338 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7339 | #endif | |
7340 | } | |
7ee38065 | 7341 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7342 | else |
7343 | { | |
7344 | /* Fail - we don't know how to handle any other | |
7345 | note size (ie. data object type). */ | |
b34976b6 | 7346 | return TRUE; |
4a938328 | 7347 | } |
252b5132 | 7348 | |
bb0082d6 | 7349 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7350 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7351 | size, note->descpos + offset); |
252b5132 RH |
7352 | } |
7353 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7354 | ||
bb0082d6 | 7355 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7356 | static bfd_boolean |
217aa764 AM |
7357 | elfcore_make_note_pseudosection (bfd *abfd, |
7358 | char *name, | |
7359 | Elf_Internal_Note *note) | |
252b5132 | 7360 | { |
936e320b AM |
7361 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7362 | note->descsz, note->descpos); | |
252b5132 RH |
7363 | } |
7364 | ||
ff08c6bb JB |
7365 | /* There isn't a consistent prfpregset_t across platforms, |
7366 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7367 | data structure apart. */ |
7368 | ||
b34976b6 | 7369 | static bfd_boolean |
217aa764 | 7370 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7371 | { |
7372 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7373 | } | |
7374 | ||
ff08c6bb JB |
7375 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
7376 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
7377 | literally. */ | |
c044fabd | 7378 | |
b34976b6 | 7379 | static bfd_boolean |
217aa764 | 7380 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7381 | { |
7382 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7383 | } | |
7384 | ||
252b5132 | 7385 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7386 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7387 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7388 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7389 | #endif | |
252b5132 RH |
7390 | #endif |
7391 | ||
7392 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7393 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7394 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7395 | typedef psinfo32_t elfcore_psinfo32_t; |
7396 | #endif | |
252b5132 RH |
7397 | #endif |
7398 | ||
252b5132 RH |
7399 | /* return a malloc'ed copy of a string at START which is at |
7400 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7401 | the copy will always have a terminating '\0'. */ |
252b5132 | 7402 | |
936e320b | 7403 | char * |
217aa764 | 7404 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7405 | { |
dc810e39 | 7406 | char *dups; |
c044fabd | 7407 | char *end = memchr (start, '\0', max); |
dc810e39 | 7408 | size_t len; |
252b5132 RH |
7409 | |
7410 | if (end == NULL) | |
7411 | len = max; | |
7412 | else | |
7413 | len = end - start; | |
7414 | ||
217aa764 | 7415 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7416 | if (dups == NULL) |
252b5132 RH |
7417 | return NULL; |
7418 | ||
dc810e39 AM |
7419 | memcpy (dups, start, len); |
7420 | dups[len] = '\0'; | |
252b5132 | 7421 | |
dc810e39 | 7422 | return dups; |
252b5132 RH |
7423 | } |
7424 | ||
bb0082d6 | 7425 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7426 | static bfd_boolean |
217aa764 | 7427 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7428 | { |
4a938328 MS |
7429 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7430 | { | |
7431 | elfcore_psinfo_t psinfo; | |
252b5132 | 7432 | |
7ee38065 | 7433 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7434 | |
4a938328 | 7435 | elf_tdata (abfd)->core_program |
936e320b AM |
7436 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7437 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7438 | |
4a938328 | 7439 | elf_tdata (abfd)->core_command |
936e320b AM |
7440 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7441 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7442 | } |
7ee38065 | 7443 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7444 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7445 | { | |
7446 | /* 64-bit host, 32-bit corefile */ | |
7447 | elfcore_psinfo32_t psinfo; | |
7448 | ||
7ee38065 | 7449 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7450 | |
4a938328 | 7451 | elf_tdata (abfd)->core_program |
936e320b AM |
7452 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7453 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7454 | |
7455 | elf_tdata (abfd)->core_command | |
936e320b AM |
7456 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7457 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7458 | } |
7459 | #endif | |
7460 | ||
7461 | else | |
7462 | { | |
7463 | /* Fail - we don't know how to handle any other | |
7464 | note size (ie. data object type). */ | |
b34976b6 | 7465 | return TRUE; |
4a938328 | 7466 | } |
252b5132 RH |
7467 | |
7468 | /* Note that for some reason, a spurious space is tacked | |
7469 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7470 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7471 | |
7472 | { | |
c044fabd | 7473 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7474 | int n = strlen (command); |
7475 | ||
7476 | if (0 < n && command[n - 1] == ' ') | |
7477 | command[n - 1] = '\0'; | |
7478 | } | |
7479 | ||
b34976b6 | 7480 | return TRUE; |
252b5132 RH |
7481 | } |
7482 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7483 | ||
252b5132 | 7484 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7485 | static bfd_boolean |
217aa764 | 7486 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7487 | { |
f572a39d AM |
7488 | if (note->descsz == sizeof (pstatus_t) |
7489 | #if defined (HAVE_PXSTATUS_T) | |
7490 | || note->descsz == sizeof (pxstatus_t) | |
7491 | #endif | |
7492 | ) | |
4a938328 MS |
7493 | { |
7494 | pstatus_t pstat; | |
252b5132 | 7495 | |
4a938328 | 7496 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7497 | |
4a938328 MS |
7498 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7499 | } | |
7ee38065 | 7500 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7501 | else if (note->descsz == sizeof (pstatus32_t)) |
7502 | { | |
7503 | /* 64-bit host, 32-bit corefile */ | |
7504 | pstatus32_t pstat; | |
252b5132 | 7505 | |
4a938328 | 7506 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7507 | |
4a938328 MS |
7508 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7509 | } | |
7510 | #endif | |
252b5132 RH |
7511 | /* Could grab some more details from the "representative" |
7512 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7513 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7514 | |
b34976b6 | 7515 | return TRUE; |
252b5132 RH |
7516 | } |
7517 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7518 | ||
252b5132 | 7519 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7520 | static bfd_boolean |
217aa764 | 7521 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7522 | { |
7523 | lwpstatus_t lwpstat; | |
7524 | char buf[100]; | |
c044fabd | 7525 | char *name; |
d4c88bbb | 7526 | size_t len; |
c044fabd | 7527 | asection *sect; |
252b5132 | 7528 | |
f572a39d AM |
7529 | if (note->descsz != sizeof (lwpstat) |
7530 | #if defined (HAVE_LWPXSTATUS_T) | |
7531 | && note->descsz != sizeof (lwpxstatus_t) | |
7532 | #endif | |
7533 | ) | |
b34976b6 | 7534 | return TRUE; |
252b5132 RH |
7535 | |
7536 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7537 | ||
7538 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7539 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7540 | ||
c044fabd | 7541 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7542 | |
7543 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7544 | len = strlen (buf) + 1; |
217aa764 | 7545 | name = bfd_alloc (abfd, len); |
252b5132 | 7546 | if (name == NULL) |
b34976b6 | 7547 | return FALSE; |
d4c88bbb | 7548 | memcpy (name, buf, len); |
252b5132 | 7549 | |
117ed4f8 | 7550 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7551 | if (sect == NULL) |
b34976b6 | 7552 | return FALSE; |
252b5132 RH |
7553 | |
7554 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7555 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7556 | sect->filepos = note->descpos |
7557 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7558 | #endif | |
7559 | ||
7560 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7561 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7562 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7563 | #endif | |
7564 | ||
252b5132 RH |
7565 | sect->alignment_power = 2; |
7566 | ||
7567 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7568 | return FALSE; |
252b5132 RH |
7569 | |
7570 | /* Make a ".reg2/999" section */ | |
7571 | ||
7572 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7573 | len = strlen (buf) + 1; |
217aa764 | 7574 | name = bfd_alloc (abfd, len); |
252b5132 | 7575 | if (name == NULL) |
b34976b6 | 7576 | return FALSE; |
d4c88bbb | 7577 | memcpy (name, buf, len); |
252b5132 | 7578 | |
117ed4f8 | 7579 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7580 | if (sect == NULL) |
b34976b6 | 7581 | return FALSE; |
252b5132 RH |
7582 | |
7583 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7584 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7585 | sect->filepos = note->descpos |
7586 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7587 | #endif | |
7588 | ||
7589 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7590 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7591 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7592 | #endif | |
7593 | ||
252b5132 RH |
7594 | sect->alignment_power = 2; |
7595 | ||
936e320b | 7596 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7597 | } |
7598 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7599 | ||
b34976b6 | 7600 | static bfd_boolean |
217aa764 | 7601 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7602 | { |
7603 | char buf[30]; | |
c044fabd | 7604 | char *name; |
d4c88bbb | 7605 | size_t len; |
c044fabd | 7606 | asection *sect; |
4a6636fb PA |
7607 | int type; |
7608 | int is_active_thread; | |
7609 | bfd_vma base_addr; | |
16e9c715 | 7610 | |
4a6636fb | 7611 | if (note->descsz < 728) |
b34976b6 | 7612 | return TRUE; |
16e9c715 | 7613 | |
4a6636fb PA |
7614 | if (! CONST_STRNEQ (note->namedata, "win32")) |
7615 | return TRUE; | |
7616 | ||
7617 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 7618 | |
4a6636fb | 7619 | switch (type) |
16e9c715 | 7620 | { |
4a6636fb | 7621 | case 1 /* NOTE_INFO_PROCESS */: |
16e9c715 | 7622 | /* FIXME: need to add ->core_command. */ |
4a6636fb PA |
7623 | /* process_info.pid */ |
7624 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8); | |
7625 | /* process_info.signal */ | |
7626 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12); | |
c044fabd | 7627 | break; |
16e9c715 | 7628 | |
4a6636fb | 7629 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 7630 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
7631 | /* thread_info.tid */ |
7632 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 7633 | |
d4c88bbb | 7634 | len = strlen (buf) + 1; |
217aa764 | 7635 | name = bfd_alloc (abfd, len); |
16e9c715 | 7636 | if (name == NULL) |
b34976b6 | 7637 | return FALSE; |
c044fabd | 7638 | |
d4c88bbb | 7639 | memcpy (name, buf, len); |
16e9c715 | 7640 | |
117ed4f8 | 7641 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7642 | if (sect == NULL) |
b34976b6 | 7643 | return FALSE; |
c044fabd | 7644 | |
4a6636fb PA |
7645 | /* sizeof (thread_info.thread_context) */ |
7646 | sect->size = 716; | |
7647 | /* offsetof (thread_info.thread_context) */ | |
7648 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
7649 | sect->alignment_power = 2; |
7650 | ||
4a6636fb PA |
7651 | /* thread_info.is_active_thread */ |
7652 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
7653 | ||
7654 | if (is_active_thread) | |
16e9c715 | 7655 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 7656 | return FALSE; |
16e9c715 NC |
7657 | break; |
7658 | ||
4a6636fb | 7659 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 7660 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
7661 | /* module_info.base_address */ |
7662 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
7663 | sprintf (buf, ".module/%08lx", (long) base_addr); | |
c044fabd | 7664 | |
d4c88bbb | 7665 | len = strlen (buf) + 1; |
217aa764 | 7666 | name = bfd_alloc (abfd, len); |
16e9c715 | 7667 | if (name == NULL) |
b34976b6 | 7668 | return FALSE; |
c044fabd | 7669 | |
d4c88bbb | 7670 | memcpy (name, buf, len); |
252b5132 | 7671 | |
117ed4f8 | 7672 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7673 | |
16e9c715 | 7674 | if (sect == NULL) |
b34976b6 | 7675 | return FALSE; |
c044fabd | 7676 | |
eea6121a | 7677 | sect->size = note->descsz; |
16e9c715 | 7678 | sect->filepos = note->descpos; |
16e9c715 NC |
7679 | sect->alignment_power = 2; |
7680 | break; | |
7681 | ||
7682 | default: | |
b34976b6 | 7683 | return TRUE; |
16e9c715 NC |
7684 | } |
7685 | ||
b34976b6 | 7686 | return TRUE; |
16e9c715 | 7687 | } |
252b5132 | 7688 | |
b34976b6 | 7689 | static bfd_boolean |
217aa764 | 7690 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7691 | { |
9c5bfbb7 | 7692 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7693 | |
252b5132 RH |
7694 | switch (note->type) |
7695 | { | |
7696 | default: | |
b34976b6 | 7697 | return TRUE; |
252b5132 | 7698 | |
252b5132 | 7699 | case NT_PRSTATUS: |
bb0082d6 AM |
7700 | if (bed->elf_backend_grok_prstatus) |
7701 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7702 | return TRUE; |
bb0082d6 | 7703 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7704 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7705 | #else |
b34976b6 | 7706 | return TRUE; |
252b5132 RH |
7707 | #endif |
7708 | ||
7709 | #if defined (HAVE_PSTATUS_T) | |
7710 | case NT_PSTATUS: | |
7711 | return elfcore_grok_pstatus (abfd, note); | |
7712 | #endif | |
7713 | ||
7714 | #if defined (HAVE_LWPSTATUS_T) | |
7715 | case NT_LWPSTATUS: | |
7716 | return elfcore_grok_lwpstatus (abfd, note); | |
7717 | #endif | |
7718 | ||
7719 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7720 | return elfcore_grok_prfpreg (abfd, note); | |
7721 | ||
c044fabd | 7722 | case NT_WIN32PSTATUS: |
16e9c715 | 7723 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 7724 | |
c044fabd | 7725 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7726 | if (note->namesz == 6 |
7727 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7728 | return elfcore_grok_prxfpreg (abfd, note); |
7729 | else | |
b34976b6 | 7730 | return TRUE; |
ff08c6bb | 7731 | |
252b5132 RH |
7732 | case NT_PRPSINFO: |
7733 | case NT_PSINFO: | |
bb0082d6 AM |
7734 | if (bed->elf_backend_grok_psinfo) |
7735 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7736 | return TRUE; |
bb0082d6 | 7737 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7738 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7739 | #else |
b34976b6 | 7740 | return TRUE; |
252b5132 | 7741 | #endif |
3333a7c3 RM |
7742 | |
7743 | case NT_AUXV: | |
7744 | { | |
117ed4f8 AM |
7745 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7746 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7747 | |
7748 | if (sect == NULL) | |
7749 | return FALSE; | |
eea6121a | 7750 | sect->size = note->descsz; |
3333a7c3 | 7751 | sect->filepos = note->descpos; |
3333a7c3 RM |
7752 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7753 | ||
7754 | return TRUE; | |
7755 | } | |
252b5132 RH |
7756 | } |
7757 | } | |
7758 | ||
718175fa JK |
7759 | static bfd_boolean |
7760 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
7761 | { | |
7762 | elf_tdata (abfd)->build_id_size = note->descsz; | |
7763 | elf_tdata (abfd)->build_id = bfd_alloc (abfd, note->descsz); | |
7764 | if (elf_tdata (abfd)->build_id == NULL) | |
7765 | return FALSE; | |
7766 | ||
7767 | memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz); | |
7768 | ||
7769 | return TRUE; | |
7770 | } | |
7771 | ||
7772 | static bfd_boolean | |
7773 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
7774 | { | |
7775 | switch (note->type) | |
7776 | { | |
7777 | default: | |
7778 | return TRUE; | |
7779 | ||
7780 | case NT_GNU_BUILD_ID: | |
7781 | return elfobj_grok_gnu_build_id (abfd, note); | |
7782 | } | |
7783 | } | |
7784 | ||
b34976b6 | 7785 | static bfd_boolean |
217aa764 | 7786 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7787 | { |
7788 | char *cp; | |
7789 | ||
7790 | cp = strchr (note->namedata, '@'); | |
7791 | if (cp != NULL) | |
7792 | { | |
d2b64500 | 7793 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7794 | return TRUE; |
50b2bdb7 | 7795 | } |
b34976b6 | 7796 | return FALSE; |
50b2bdb7 AM |
7797 | } |
7798 | ||
b34976b6 | 7799 | static bfd_boolean |
217aa764 | 7800 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 7801 | { |
50b2bdb7 AM |
7802 | /* Signal number at offset 0x08. */ |
7803 | elf_tdata (abfd)->core_signal | |
7804 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7805 | ||
7806 | /* Process ID at offset 0x50. */ | |
7807 | elf_tdata (abfd)->core_pid | |
7808 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7809 | ||
7810 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7811 | elf_tdata (abfd)->core_command | |
7812 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7813 | ||
7720ba9f MK |
7814 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7815 | note); | |
50b2bdb7 AM |
7816 | } |
7817 | ||
b34976b6 | 7818 | static bfd_boolean |
217aa764 | 7819 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7820 | { |
7821 | int lwp; | |
7822 | ||
7823 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7824 | elf_tdata (abfd)->core_lwpid = lwp; | |
7825 | ||
b4db1224 | 7826 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7827 | { |
7828 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
7829 | find this note before any of the others, which is fine, |
7830 | since the kernel writes this note out first when it | |
7831 | creates a core file. */ | |
47d9a591 | 7832 | |
50b2bdb7 AM |
7833 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7834 | } | |
7835 | ||
b4db1224 JT |
7836 | /* As of Jan 2002 there are no other machine-independent notes |
7837 | defined for NetBSD core files. If the note type is less | |
7838 | than the start of the machine-dependent note types, we don't | |
7839 | understand it. */ | |
47d9a591 | 7840 | |
b4db1224 | 7841 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7842 | return TRUE; |
50b2bdb7 AM |
7843 | |
7844 | ||
7845 | switch (bfd_get_arch (abfd)) | |
7846 | { | |
08a40648 AM |
7847 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
7848 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
7849 | |
7850 | case bfd_arch_alpha: | |
7851 | case bfd_arch_sparc: | |
7852 | switch (note->type) | |
08a40648 AM |
7853 | { |
7854 | case NT_NETBSDCORE_FIRSTMACH+0: | |
7855 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 7856 | |
08a40648 AM |
7857 | case NT_NETBSDCORE_FIRSTMACH+2: |
7858 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 7859 | |
08a40648 AM |
7860 | default: |
7861 | return TRUE; | |
7862 | } | |
50b2bdb7 | 7863 | |
08a40648 AM |
7864 | /* On all other arch's, PT_GETREGS == mach+1 and |
7865 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
7866 | |
7867 | default: | |
7868 | switch (note->type) | |
08a40648 AM |
7869 | { |
7870 | case NT_NETBSDCORE_FIRSTMACH+1: | |
7871 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 7872 | |
08a40648 AM |
7873 | case NT_NETBSDCORE_FIRSTMACH+3: |
7874 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 7875 | |
08a40648 AM |
7876 | default: |
7877 | return TRUE; | |
7878 | } | |
50b2bdb7 AM |
7879 | } |
7880 | /* NOTREACHED */ | |
7881 | } | |
7882 | ||
07c6e936 | 7883 | static bfd_boolean |
d3fd4074 | 7884 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
7885 | { |
7886 | void *ddata = note->descdata; | |
7887 | char buf[100]; | |
7888 | char *name; | |
7889 | asection *sect; | |
f8843e87 AM |
7890 | short sig; |
7891 | unsigned flags; | |
07c6e936 NC |
7892 | |
7893 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7894 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7895 | ||
f8843e87 AM |
7896 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7897 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7898 | ||
7899 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7900 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7901 | |
7902 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7903 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7904 | { | |
7905 | elf_tdata (abfd)->core_signal = sig; | |
7906 | elf_tdata (abfd)->core_lwpid = *tid; | |
7907 | } | |
07c6e936 | 7908 | |
f8843e87 AM |
7909 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7910 | do not come from signals so we make sure we set the current | |
7911 | thread just in case. */ | |
7912 | if (flags & 0x00000080) | |
7913 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7914 | |
7915 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 7916 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 7917 | |
217aa764 | 7918 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7919 | if (name == NULL) |
7920 | return FALSE; | |
7921 | strcpy (name, buf); | |
7922 | ||
117ed4f8 | 7923 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
7924 | if (sect == NULL) |
7925 | return FALSE; | |
7926 | ||
eea6121a | 7927 | sect->size = note->descsz; |
07c6e936 | 7928 | sect->filepos = note->descpos; |
07c6e936 NC |
7929 | sect->alignment_power = 2; |
7930 | ||
7931 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7932 | } | |
7933 | ||
7934 | static bfd_boolean | |
d69f560c KW |
7935 | elfcore_grok_nto_regs (bfd *abfd, |
7936 | Elf_Internal_Note *note, | |
d3fd4074 | 7937 | long tid, |
d69f560c | 7938 | char *base) |
07c6e936 NC |
7939 | { |
7940 | char buf[100]; | |
7941 | char *name; | |
7942 | asection *sect; | |
7943 | ||
d69f560c | 7944 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 7945 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 7946 | |
217aa764 | 7947 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7948 | if (name == NULL) |
7949 | return FALSE; | |
7950 | strcpy (name, buf); | |
7951 | ||
117ed4f8 | 7952 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
7953 | if (sect == NULL) |
7954 | return FALSE; | |
7955 | ||
eea6121a | 7956 | sect->size = note->descsz; |
07c6e936 | 7957 | sect->filepos = note->descpos; |
07c6e936 NC |
7958 | sect->alignment_power = 2; |
7959 | ||
f8843e87 AM |
7960 | /* This is the current thread. */ |
7961 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7962 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7963 | |
7964 | return TRUE; | |
07c6e936 NC |
7965 | } |
7966 | ||
7967 | #define BFD_QNT_CORE_INFO 7 | |
7968 | #define BFD_QNT_CORE_STATUS 8 | |
7969 | #define BFD_QNT_CORE_GREG 9 | |
7970 | #define BFD_QNT_CORE_FPREG 10 | |
7971 | ||
7972 | static bfd_boolean | |
217aa764 | 7973 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7974 | { |
7975 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7976 | tid from the previous call to pass down to the next gregs |
07c6e936 | 7977 | function. */ |
d3fd4074 | 7978 | static long tid = 1; |
07c6e936 NC |
7979 | |
7980 | switch (note->type) | |
7981 | { | |
d69f560c KW |
7982 | case BFD_QNT_CORE_INFO: |
7983 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7984 | case BFD_QNT_CORE_STATUS: | |
7985 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7986 | case BFD_QNT_CORE_GREG: | |
7987 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7988 | case BFD_QNT_CORE_FPREG: | |
7989 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7990 | default: | |
7991 | return TRUE; | |
07c6e936 NC |
7992 | } |
7993 | } | |
7994 | ||
b15fa79e AM |
7995 | static bfd_boolean |
7996 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
7997 | { | |
7998 | char *name; | |
7999 | asection *sect; | |
8000 | size_t len; | |
8001 | ||
8002 | /* Use note name as section name. */ | |
8003 | len = note->namesz; | |
8004 | name = bfd_alloc (abfd, len); | |
8005 | if (name == NULL) | |
8006 | return FALSE; | |
8007 | memcpy (name, note->namedata, len); | |
8008 | name[len - 1] = '\0'; | |
8009 | ||
8010 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
8011 | if (sect == NULL) | |
8012 | return FALSE; | |
8013 | ||
8014 | sect->size = note->descsz; | |
8015 | sect->filepos = note->descpos; | |
8016 | sect->alignment_power = 1; | |
8017 | ||
8018 | return TRUE; | |
8019 | } | |
8020 | ||
7c76fa91 MS |
8021 | /* Function: elfcore_write_note |
8022 | ||
47d9a591 | 8023 | Inputs: |
a39f3346 | 8024 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8025 | name of note |
8026 | type of note | |
8027 | data for note | |
8028 | size of data for note | |
8029 | ||
a39f3346 AM |
8030 | Writes note to end of buffer. ELF64 notes are written exactly as |
8031 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8032 | that they ought to have 8-byte namesz and descsz field, and have | |
8033 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8034 | ||
7c76fa91 | 8035 | Return: |
a39f3346 | 8036 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8037 | |
8038 | char * | |
a39f3346 | 8039 | elfcore_write_note (bfd *abfd, |
217aa764 | 8040 | char *buf, |
a39f3346 | 8041 | int *bufsiz, |
217aa764 | 8042 | const char *name, |
a39f3346 | 8043 | int type, |
217aa764 | 8044 | const void *input, |
a39f3346 | 8045 | int size) |
7c76fa91 MS |
8046 | { |
8047 | Elf_External_Note *xnp; | |
d4c88bbb | 8048 | size_t namesz; |
d4c88bbb | 8049 | size_t newspace; |
a39f3346 | 8050 | char *dest; |
7c76fa91 | 8051 | |
d4c88bbb | 8052 | namesz = 0; |
d4c88bbb | 8053 | if (name != NULL) |
a39f3346 | 8054 | namesz = strlen (name) + 1; |
d4c88bbb | 8055 | |
a39f3346 | 8056 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8057 | |
a39f3346 AM |
8058 | buf = realloc (buf, *bufsiz + newspace); |
8059 | dest = buf + *bufsiz; | |
7c76fa91 MS |
8060 | *bufsiz += newspace; |
8061 | xnp = (Elf_External_Note *) dest; | |
8062 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8063 | H_PUT_32 (abfd, size, xnp->descsz); | |
8064 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8065 | dest = xnp->name; |
8066 | if (name != NULL) | |
8067 | { | |
8068 | memcpy (dest, name, namesz); | |
8069 | dest += namesz; | |
a39f3346 | 8070 | while (namesz & 3) |
d4c88bbb AM |
8071 | { |
8072 | *dest++ = '\0'; | |
a39f3346 | 8073 | ++namesz; |
d4c88bbb AM |
8074 | } |
8075 | } | |
8076 | memcpy (dest, input, size); | |
a39f3346 AM |
8077 | dest += size; |
8078 | while (size & 3) | |
8079 | { | |
8080 | *dest++ = '\0'; | |
8081 | ++size; | |
8082 | } | |
8083 | return buf; | |
7c76fa91 MS |
8084 | } |
8085 | ||
8086 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8087 | char * | |
217aa764 AM |
8088 | elfcore_write_prpsinfo (bfd *abfd, |
8089 | char *buf, | |
8090 | int *bufsiz, | |
8091 | const char *fname, | |
8092 | const char *psargs) | |
7c76fa91 | 8093 | { |
183e98be AM |
8094 | const char *note_name = "CORE"; |
8095 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8096 | ||
8097 | if (bed->elf_backend_write_core_note != NULL) | |
8098 | { | |
8099 | char *ret; | |
8100 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8101 | NT_PRPSINFO, fname, psargs); | |
8102 | if (ret != NULL) | |
8103 | return ret; | |
8104 | } | |
7c76fa91 | 8105 | |
183e98be AM |
8106 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8107 | if (bed->s->elfclass == ELFCLASS32) | |
8108 | { | |
8109 | #if defined (HAVE_PSINFO32_T) | |
8110 | psinfo32_t data; | |
8111 | int note_type = NT_PSINFO; | |
8112 | #else | |
8113 | prpsinfo32_t data; | |
8114 | int note_type = NT_PRPSINFO; | |
8115 | #endif | |
8116 | ||
8117 | memset (&data, 0, sizeof (data)); | |
8118 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8119 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8120 | return elfcore_write_note (abfd, buf, bufsiz, | |
8121 | note_name, note_type, &data, sizeof (data)); | |
8122 | } | |
8123 | else | |
8124 | #endif | |
8125 | { | |
7c76fa91 | 8126 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8127 | psinfo_t data; |
8128 | int note_type = NT_PSINFO; | |
7c76fa91 | 8129 | #else |
183e98be AM |
8130 | prpsinfo_t data; |
8131 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8132 | #endif |
8133 | ||
183e98be AM |
8134 | memset (&data, 0, sizeof (data)); |
8135 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8136 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8137 | return elfcore_write_note (abfd, buf, bufsiz, | |
8138 | note_name, note_type, &data, sizeof (data)); | |
8139 | } | |
7c76fa91 MS |
8140 | } |
8141 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8142 | ||
8143 | #if defined (HAVE_PRSTATUS_T) | |
8144 | char * | |
217aa764 AM |
8145 | elfcore_write_prstatus (bfd *abfd, |
8146 | char *buf, | |
8147 | int *bufsiz, | |
8148 | long pid, | |
8149 | int cursig, | |
8150 | const void *gregs) | |
7c76fa91 | 8151 | { |
183e98be AM |
8152 | const char *note_name = "CORE"; |
8153 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8154 | |
183e98be AM |
8155 | if (bed->elf_backend_write_core_note != NULL) |
8156 | { | |
8157 | char *ret; | |
8158 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8159 | NT_PRSTATUS, | |
8160 | pid, cursig, gregs); | |
8161 | if (ret != NULL) | |
8162 | return ret; | |
8163 | } | |
8164 | ||
8165 | #if defined (HAVE_PRSTATUS32_T) | |
8166 | if (bed->s->elfclass == ELFCLASS32) | |
8167 | { | |
8168 | prstatus32_t prstat; | |
8169 | ||
8170 | memset (&prstat, 0, sizeof (prstat)); | |
8171 | prstat.pr_pid = pid; | |
8172 | prstat.pr_cursig = cursig; | |
8173 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8174 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8175 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8176 | } | |
8177 | else | |
8178 | #endif | |
8179 | { | |
8180 | prstatus_t prstat; | |
8181 | ||
8182 | memset (&prstat, 0, sizeof (prstat)); | |
8183 | prstat.pr_pid = pid; | |
8184 | prstat.pr_cursig = cursig; | |
8185 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8186 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8187 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8188 | } | |
7c76fa91 MS |
8189 | } |
8190 | #endif /* HAVE_PRSTATUS_T */ | |
8191 | ||
51316059 MS |
8192 | #if defined (HAVE_LWPSTATUS_T) |
8193 | char * | |
217aa764 AM |
8194 | elfcore_write_lwpstatus (bfd *abfd, |
8195 | char *buf, | |
8196 | int *bufsiz, | |
8197 | long pid, | |
8198 | int cursig, | |
8199 | const void *gregs) | |
51316059 MS |
8200 | { |
8201 | lwpstatus_t lwpstat; | |
183e98be | 8202 | const char *note_name = "CORE"; |
51316059 MS |
8203 | |
8204 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8205 | lwpstat.pr_lwpid = pid >> 16; | |
8206 | lwpstat.pr_cursig = cursig; | |
8207 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8208 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8209 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8210 | #if !defined(gregs) | |
8211 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8212 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8213 | #else | |
8214 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8215 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8216 | #endif | |
8217 | #endif | |
47d9a591 | 8218 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8219 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8220 | } | |
8221 | #endif /* HAVE_LWPSTATUS_T */ | |
8222 | ||
7c76fa91 MS |
8223 | #if defined (HAVE_PSTATUS_T) |
8224 | char * | |
217aa764 AM |
8225 | elfcore_write_pstatus (bfd *abfd, |
8226 | char *buf, | |
8227 | int *bufsiz, | |
8228 | long pid, | |
6c10990d NC |
8229 | int cursig ATTRIBUTE_UNUSED, |
8230 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8231 | { |
183e98be AM |
8232 | const char *note_name = "CORE"; |
8233 | #if defined (HAVE_PSTATUS32_T) | |
8234 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8235 | |
183e98be AM |
8236 | if (bed->s->elfclass == ELFCLASS32) |
8237 | { | |
8238 | pstatus32_t pstat; | |
8239 | ||
8240 | memset (&pstat, 0, sizeof (pstat)); | |
8241 | pstat.pr_pid = pid & 0xffff; | |
8242 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8243 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8244 | return buf; | |
8245 | } | |
8246 | else | |
8247 | #endif | |
8248 | { | |
8249 | pstatus_t pstat; | |
8250 | ||
8251 | memset (&pstat, 0, sizeof (pstat)); | |
8252 | pstat.pr_pid = pid & 0xffff; | |
8253 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8254 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8255 | return buf; | |
8256 | } | |
7c76fa91 MS |
8257 | } |
8258 | #endif /* HAVE_PSTATUS_T */ | |
8259 | ||
8260 | char * | |
217aa764 AM |
8261 | elfcore_write_prfpreg (bfd *abfd, |
8262 | char *buf, | |
8263 | int *bufsiz, | |
8264 | const void *fpregs, | |
8265 | int size) | |
7c76fa91 | 8266 | { |
183e98be | 8267 | const char *note_name = "CORE"; |
47d9a591 | 8268 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8269 | note_name, NT_FPREGSET, fpregs, size); |
8270 | } | |
8271 | ||
8272 | char * | |
217aa764 AM |
8273 | elfcore_write_prxfpreg (bfd *abfd, |
8274 | char *buf, | |
8275 | int *bufsiz, | |
8276 | const void *xfpregs, | |
8277 | int size) | |
7c76fa91 MS |
8278 | { |
8279 | char *note_name = "LINUX"; | |
47d9a591 | 8280 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8281 | note_name, NT_PRXFPREG, xfpregs, size); |
8282 | } | |
8283 | ||
b34976b6 | 8284 | static bfd_boolean |
718175fa | 8285 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 8286 | { |
c044fabd | 8287 | char *p; |
252b5132 | 8288 | |
252b5132 RH |
8289 | p = buf; |
8290 | while (p < buf + size) | |
8291 | { | |
c044fabd KH |
8292 | /* FIXME: bad alignment assumption. */ |
8293 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8294 | Elf_Internal_Note in; |
8295 | ||
dc810e39 | 8296 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8297 | |
dc810e39 | 8298 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8299 | in.namedata = xnp->name; |
8300 | ||
dc810e39 | 8301 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8302 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8303 | in.descpos = offset + (in.descdata - buf); | |
8304 | ||
718175fa JK |
8305 | switch (bfd_get_format (abfd)) |
8306 | { | |
8307 | default: | |
8308 | return TRUE; | |
8309 | ||
8310 | case bfd_core: | |
8311 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) | |
8312 | { | |
8313 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8314 | return FALSE; | |
8315 | } | |
8316 | else if (CONST_STRNEQ (in.namedata, "QNX")) | |
8317 | { | |
8318 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8319 | return FALSE; | |
8320 | } | |
b15fa79e AM |
8321 | else if (CONST_STRNEQ (in.namedata, "SPU/")) |
8322 | { | |
8323 | if (! elfcore_grok_spu_note (abfd, &in)) | |
8324 | return FALSE; | |
8325 | } | |
718175fa JK |
8326 | else |
8327 | { | |
8328 | if (! elfcore_grok_note (abfd, &in)) | |
8329 | return FALSE; | |
8330 | } | |
8331 | break; | |
8332 | ||
8333 | case bfd_object: | |
8334 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
8335 | { | |
8336 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
8337 | return FALSE; | |
8338 | } | |
8339 | break; | |
08a40648 | 8340 | } |
252b5132 RH |
8341 | |
8342 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8343 | } | |
8344 | ||
718175fa JK |
8345 | return TRUE; |
8346 | } | |
8347 | ||
8348 | static bfd_boolean | |
8349 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
8350 | { | |
8351 | char *buf; | |
8352 | ||
8353 | if (size <= 0) | |
8354 | return TRUE; | |
8355 | ||
8356 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
8357 | return FALSE; | |
8358 | ||
8359 | buf = bfd_malloc (size); | |
8360 | if (buf == NULL) | |
8361 | return FALSE; | |
8362 | ||
8363 | if (bfd_bread (buf, size, abfd) != size | |
8364 | || !elf_parse_notes (abfd, buf, size, offset)) | |
8365 | { | |
8366 | free (buf); | |
8367 | return FALSE; | |
8368 | } | |
8369 | ||
252b5132 | 8370 | free (buf); |
b34976b6 | 8371 | return TRUE; |
252b5132 | 8372 | } |
98d8431c JB |
8373 | \f |
8374 | /* Providing external access to the ELF program header table. */ | |
8375 | ||
8376 | /* Return an upper bound on the number of bytes required to store a | |
8377 | copy of ABFD's program header table entries. Return -1 if an error | |
8378 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8379 | |
98d8431c | 8380 | long |
217aa764 | 8381 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8382 | { |
8383 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8384 | { | |
8385 | bfd_set_error (bfd_error_wrong_format); | |
8386 | return -1; | |
8387 | } | |
8388 | ||
936e320b | 8389 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8390 | } |
8391 | ||
98d8431c JB |
8392 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8393 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8394 | defined in include/elf/internal.h. To find out how large the | |
8395 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8396 | ||
8397 | Return the number of program header table entries read, or -1 if an | |
8398 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8399 | |
98d8431c | 8400 | int |
217aa764 | 8401 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8402 | { |
8403 | int num_phdrs; | |
8404 | ||
8405 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8406 | { | |
8407 | bfd_set_error (bfd_error_wrong_format); | |
8408 | return -1; | |
8409 | } | |
8410 | ||
8411 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8412 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8413 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8414 | ||
8415 | return num_phdrs; | |
8416 | } | |
ae4221d7 | 8417 | |
db6751f2 | 8418 | enum elf_reloc_type_class |
217aa764 | 8419 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8420 | { |
8421 | return reloc_class_normal; | |
8422 | } | |
f8df10f4 | 8423 | |
47d9a591 | 8424 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8425 | relocation against a local symbol. */ |
8426 | ||
8427 | bfd_vma | |
217aa764 AM |
8428 | _bfd_elf_rela_local_sym (bfd *abfd, |
8429 | Elf_Internal_Sym *sym, | |
8517fae7 | 8430 | asection **psec, |
217aa764 | 8431 | Elf_Internal_Rela *rel) |
f8df10f4 | 8432 | { |
8517fae7 | 8433 | asection *sec = *psec; |
f8df10f4 JJ |
8434 | bfd_vma relocation; |
8435 | ||
8436 | relocation = (sec->output_section->vma | |
8437 | + sec->output_offset | |
8438 | + sym->st_value); | |
8439 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8440 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8441 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8442 | { |
f8df10f4 | 8443 | rel->r_addend = |
8517fae7 | 8444 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8445 | elf_section_data (sec)->sec_info, |
753731ee AM |
8446 | sym->st_value + rel->r_addend); |
8447 | if (sec != *psec) | |
8448 | { | |
8449 | /* If we have changed the section, and our original section is | |
8450 | marked with SEC_EXCLUDE, it means that the original | |
8451 | SEC_MERGE section has been completely subsumed in some | |
8452 | other SEC_MERGE section. In this case, we need to leave | |
8453 | some info around for --emit-relocs. */ | |
8454 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8455 | sec->kept_section = *psec; | |
8456 | sec = *psec; | |
8457 | } | |
8517fae7 AM |
8458 | rel->r_addend -= relocation; |
8459 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8460 | } |
8461 | return relocation; | |
8462 | } | |
c629eae0 JJ |
8463 | |
8464 | bfd_vma | |
217aa764 AM |
8465 | _bfd_elf_rel_local_sym (bfd *abfd, |
8466 | Elf_Internal_Sym *sym, | |
8467 | asection **psec, | |
8468 | bfd_vma addend) | |
47d9a591 | 8469 | { |
c629eae0 JJ |
8470 | asection *sec = *psec; |
8471 | ||
68bfbfcc | 8472 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8473 | return sym->st_value + addend; |
8474 | ||
8475 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8476 | elf_section_data (sec)->sec_info, |
753731ee | 8477 | sym->st_value + addend); |
c629eae0 JJ |
8478 | } |
8479 | ||
8480 | bfd_vma | |
217aa764 | 8481 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8482 | struct bfd_link_info *info, |
217aa764 AM |
8483 | asection *sec, |
8484 | bfd_vma offset) | |
c629eae0 | 8485 | { |
68bfbfcc | 8486 | switch (sec->sec_info_type) |
65765700 JJ |
8487 | { |
8488 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8489 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8490 | offset); | |
65765700 | 8491 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8492 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8493 | default: |
8494 | return offset; | |
8495 | } | |
c629eae0 | 8496 | } |
3333a7c3 RM |
8497 | \f |
8498 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8499 | reconstruct an ELF file by reading the segments out of remote memory | |
8500 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8501 | points to. If not null, *LOADBASEP is filled in with the difference | |
8502 | between the VMAs from which the segments were read, and the VMAs the | |
8503 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8504 | ||
8505 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8506 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8507 | should return zero on success or an `errno' code on failure. TEMPL must | |
8508 | be a BFD for an ELF target with the word size and byte order found in | |
8509 | the remote memory. */ | |
8510 | ||
8511 | bfd * | |
217aa764 AM |
8512 | bfd_elf_bfd_from_remote_memory |
8513 | (bfd *templ, | |
8514 | bfd_vma ehdr_vma, | |
8515 | bfd_vma *loadbasep, | |
f075ee0c | 8516 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8517 | { |
8518 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8519 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8520 | } | |
4c45e5c9 JJ |
8521 | \f |
8522 | long | |
c9727e01 AM |
8523 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8524 | long symcount ATTRIBUTE_UNUSED, | |
8525 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8526 | long dynsymcount, |
c9727e01 AM |
8527 | asymbol **dynsyms, |
8528 | asymbol **ret) | |
4c45e5c9 JJ |
8529 | { |
8530 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8531 | asection *relplt; | |
8532 | asymbol *s; | |
8533 | const char *relplt_name; | |
8534 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8535 | arelent *p; | |
8536 | long count, i, n; | |
8537 | size_t size; | |
8538 | Elf_Internal_Shdr *hdr; | |
8539 | char *names; | |
8540 | asection *plt; | |
8541 | ||
8615f3f2 AM |
8542 | *ret = NULL; |
8543 | ||
90e3cdf2 JJ |
8544 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8545 | return 0; | |
8546 | ||
8615f3f2 AM |
8547 | if (dynsymcount <= 0) |
8548 | return 0; | |
8549 | ||
4c45e5c9 JJ |
8550 | if (!bed->plt_sym_val) |
8551 | return 0; | |
8552 | ||
8553 | relplt_name = bed->relplt_name; | |
8554 | if (relplt_name == NULL) | |
8555 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8556 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8557 | if (relplt == NULL) | |
8558 | return 0; | |
8559 | ||
8560 | hdr = &elf_section_data (relplt)->this_hdr; | |
8561 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8562 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8563 | return 0; | |
8564 | ||
8565 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8566 | if (plt == NULL) | |
8567 | return 0; | |
8568 | ||
8569 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8570 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8571 | return -1; |
8572 | ||
eea6121a | 8573 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8574 | size = count * sizeof (asymbol); |
8575 | p = relplt->relocation; | |
b7fd5ce1 | 8576 | for (i = 0; i < count; i++, p++) |
4c45e5c9 JJ |
8577 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); |
8578 | ||
8579 | s = *ret = bfd_malloc (size); | |
8580 | if (s == NULL) | |
8581 | return -1; | |
8582 | ||
8583 | names = (char *) (s + count); | |
8584 | p = relplt->relocation; | |
8585 | n = 0; | |
8586 | for (i = 0; i < count; i++, s++, p++) | |
8587 | { | |
8588 | size_t len; | |
8589 | bfd_vma addr; | |
8590 | ||
8591 | addr = bed->plt_sym_val (i, plt, p); | |
8592 | if (addr == (bfd_vma) -1) | |
8593 | continue; | |
8594 | ||
8595 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8596 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8597 | we are defining a symbol, ensure one of them is set. */ | |
8598 | if ((s->flags & BSF_LOCAL) == 0) | |
8599 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8600 | s->section = plt; |
8601 | s->value = addr - plt->vma; | |
8602 | s->name = names; | |
8603 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8604 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8605 | names += len; | |
8606 | memcpy (names, "@plt", sizeof ("@plt")); | |
8607 | names += sizeof ("@plt"); | |
8608 | ++n; | |
8609 | } | |
8610 | ||
8611 | return n; | |
8612 | } | |
3d7f7666 | 8613 | |
3b22753a L |
8614 | /* It is only used by x86-64 so far. */ |
8615 | asection _bfd_elf_large_com_section | |
8616 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8617 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 8618 | |
d1036acb L |
8619 | void |
8620 | _bfd_elf_set_osabi (bfd * abfd, | |
8621 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
8622 | { | |
8623 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
8624 | ||
8625 | i_ehdrp = elf_elfheader (abfd); | |
8626 | ||
8627 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
8628 | } | |
fcb93ecf PB |
8629 | |
8630 | ||
8631 | /* Return TRUE for ELF symbol types that represent functions. | |
8632 | This is the default version of this function, which is sufficient for | |
8633 | most targets. It returns true if TYPE is STT_FUNC. */ | |
8634 | ||
8635 | bfd_boolean | |
8636 | _bfd_elf_is_function_type (unsigned int type) | |
8637 | { | |
8638 | return (type == STT_FUNC); | |
8639 | } |