Commit | Line | Data |
---|---|---|
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); |
14b1c01e AM |
1787 | if (hdr2 == NULL) |
1788 | return FALSE; | |
252b5132 RH |
1789 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1790 | } | |
1791 | *hdr2 = *hdr; | |
1792 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1793 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1794 | target_sect->flags |= SEC_RELOC; |
1795 | target_sect->relocation = NULL; | |
1796 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1797 | /* In the section to which the relocations apply, mark whether |
1798 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1799 | if (hdr->sh_size != 0) |
68bfbfcc | 1800 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1801 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1802 | return TRUE; |
252b5132 | 1803 | } |
252b5132 RH |
1804 | |
1805 | case SHT_GNU_verdef: | |
1806 | elf_dynverdef (abfd) = shindex; | |
1807 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1808 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1809 | |
1810 | case SHT_GNU_versym: | |
a50b2160 JJ |
1811 | if (hdr->sh_entsize != sizeof (Elf_External_Versym)) |
1812 | return FALSE; | |
252b5132 RH |
1813 | elf_dynversym (abfd) = shindex; |
1814 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 1815 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1816 | |
1817 | case SHT_GNU_verneed: | |
1818 | elf_dynverref (abfd) = shindex; | |
1819 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 1820 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1821 | |
1822 | case SHT_SHLIB: | |
b34976b6 | 1823 | return TRUE; |
252b5132 | 1824 | |
dbb410c3 | 1825 | case SHT_GROUP: |
b885599b AM |
1826 | /* We need a BFD section for objcopy and relocatable linking, |
1827 | and it's handy to have the signature available as the section | |
1828 | name. */ | |
1783205a | 1829 | if (! IS_VALID_GROUP_SECTION_HEADER (hdr)) |
a50b2160 | 1830 | return FALSE; |
b885599b AM |
1831 | name = group_signature (abfd, hdr); |
1832 | if (name == NULL) | |
b34976b6 | 1833 | return FALSE; |
6dc132d9 | 1834 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1835 | return FALSE; |
dbb410c3 AM |
1836 | if (hdr->contents != NULL) |
1837 | { | |
1838 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1783205a | 1839 | unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE; |
dbb410c3 AM |
1840 | asection *s; |
1841 | ||
b885599b AM |
1842 | if (idx->flags & GRP_COMDAT) |
1843 | hdr->bfd_section->flags | |
1844 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1845 | ||
45c5e9ed L |
1846 | /* We try to keep the same section order as it comes in. */ |
1847 | idx += n_elt; | |
dbb410c3 | 1848 | while (--n_elt != 0) |
1783205a NC |
1849 | { |
1850 | --idx; | |
1851 | ||
1852 | if (idx->shdr != NULL | |
1853 | && (s = idx->shdr->bfd_section) != NULL | |
1854 | && elf_next_in_group (s) != NULL) | |
1855 | { | |
1856 | elf_next_in_group (hdr->bfd_section) = s; | |
1857 | break; | |
1858 | } | |
1859 | } | |
dbb410c3 AM |
1860 | } |
1861 | break; | |
1862 | ||
252b5132 | 1863 | default: |
104d59d1 JM |
1864 | /* Possibly an attributes section. */ |
1865 | if (hdr->sh_type == SHT_GNU_ATTRIBUTES | |
1866 | || hdr->sh_type == bed->obj_attrs_section_type) | |
1867 | { | |
1868 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
1869 | return FALSE; | |
1870 | _bfd_elf_parse_attributes (abfd, hdr); | |
1871 | return TRUE; | |
1872 | } | |
1873 | ||
252b5132 | 1874 | /* Check for any processor-specific section types. */ |
3eb70a79 L |
1875 | if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex)) |
1876 | return TRUE; | |
1877 | ||
1878 | if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER) | |
1879 | { | |
1880 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
1881 | /* FIXME: How to properly handle allocated section reserved | |
1882 | for applications? */ | |
1883 | (*_bfd_error_handler) | |
1884 | (_("%B: don't know how to handle allocated, application " | |
1885 | "specific section `%s' [0x%8x]"), | |
1886 | abfd, name, hdr->sh_type); | |
1887 | else | |
1888 | /* Allow sections reserved for applications. */ | |
1889 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, | |
1890 | shindex); | |
1891 | } | |
1892 | else if (hdr->sh_type >= SHT_LOPROC | |
1893 | && hdr->sh_type <= SHT_HIPROC) | |
1894 | /* FIXME: We should handle this section. */ | |
1895 | (*_bfd_error_handler) | |
1896 | (_("%B: don't know how to handle processor specific section " | |
1897 | "`%s' [0x%8x]"), | |
1898 | abfd, name, hdr->sh_type); | |
1899 | else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS) | |
ff15b240 NC |
1900 | { |
1901 | /* Unrecognised OS-specific sections. */ | |
1902 | if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0) | |
1903 | /* SHF_OS_NONCONFORMING indicates that special knowledge is | |
08a40648 | 1904 | required to correctly process the section and the file should |
ff15b240 NC |
1905 | be rejected with an error message. */ |
1906 | (*_bfd_error_handler) | |
1907 | (_("%B: don't know how to handle OS specific section " | |
1908 | "`%s' [0x%8x]"), | |
1909 | abfd, name, hdr->sh_type); | |
1910 | else | |
1911 | /* Otherwise it should be processed. */ | |
1912 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
1913 | } | |
3eb70a79 L |
1914 | else |
1915 | /* FIXME: We should handle this section. */ | |
1916 | (*_bfd_error_handler) | |
1917 | (_("%B: don't know how to handle section `%s' [0x%8x]"), | |
1918 | abfd, name, hdr->sh_type); | |
1919 | ||
1920 | return FALSE; | |
252b5132 RH |
1921 | } |
1922 | ||
b34976b6 | 1923 | return TRUE; |
252b5132 RH |
1924 | } |
1925 | ||
ec338859 AM |
1926 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
1927 | Return SEC for sections that have no elf section, and NULL on error. */ | |
1928 | ||
1929 | asection * | |
217aa764 AM |
1930 | bfd_section_from_r_symndx (bfd *abfd, |
1931 | struct sym_sec_cache *cache, | |
1932 | asection *sec, | |
1933 | unsigned long r_symndx) | |
ec338859 | 1934 | { |
ec338859 | 1935 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
a5d1b3b5 | 1936 | asection *s; |
ec338859 | 1937 | |
a5d1b3b5 AM |
1938 | if (cache->abfd != abfd || cache->indx[ent] != r_symndx) |
1939 | { | |
1940 | Elf_Internal_Shdr *symtab_hdr; | |
1941 | unsigned char esym[sizeof (Elf64_External_Sym)]; | |
1942 | Elf_External_Sym_Shndx eshndx; | |
1943 | Elf_Internal_Sym isym; | |
ec338859 | 1944 | |
a5d1b3b5 AM |
1945 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1946 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, | |
1947 | &isym, esym, &eshndx) == NULL) | |
1948 | return NULL; | |
9ad5cbcf | 1949 | |
a5d1b3b5 AM |
1950 | if (cache->abfd != abfd) |
1951 | { | |
1952 | memset (cache->indx, -1, sizeof (cache->indx)); | |
1953 | cache->abfd = abfd; | |
1954 | } | |
1955 | cache->indx[ent] = r_symndx; | |
1956 | cache->shndx[ent] = isym.st_shndx; | |
ec338859 | 1957 | } |
a5d1b3b5 AM |
1958 | |
1959 | s = bfd_section_from_elf_index (abfd, cache->shndx[ent]); | |
1960 | if (s != NULL) | |
1961 | return s; | |
1962 | ||
1963 | return sec; | |
ec338859 AM |
1964 | } |
1965 | ||
252b5132 RH |
1966 | /* Given an ELF section number, retrieve the corresponding BFD |
1967 | section. */ | |
1968 | ||
1969 | asection * | |
217aa764 | 1970 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 1971 | { |
9ad5cbcf | 1972 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
1973 | return NULL; |
1974 | return elf_elfsections (abfd)[index]->bfd_section; | |
1975 | } | |
1976 | ||
b35d266b | 1977 | static const struct bfd_elf_special_section special_sections_b[] = |
2f89ff8d | 1978 | { |
0112cd26 NC |
1979 | { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
1980 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1981 | }; |
1982 | ||
b35d266b | 1983 | static const struct bfd_elf_special_section special_sections_c[] = |
7f4d3958 | 1984 | { |
0112cd26 NC |
1985 | { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 }, |
1986 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
1987 | }; |
1988 | ||
b35d266b | 1989 | static const struct bfd_elf_special_section special_sections_d[] = |
7f4d3958 | 1990 | { |
0112cd26 NC |
1991 | { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1992 | { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
1993 | { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 }, | |
1994 | { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 }, | |
1995 | { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 }, | |
1996 | { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 }, | |
1997 | { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 }, | |
1998 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC }, | |
1999 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC }, | |
2000 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC }, | |
2001 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2002 | }; |
2003 | ||
b35d266b | 2004 | static const struct bfd_elf_special_section special_sections_f[] = |
7f4d3958 | 2005 | { |
0112cd26 NC |
2006 | { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2007 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2008 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2009 | }; |
2010 | ||
b35d266b | 2011 | static const struct bfd_elf_special_section special_sections_g[] = |
7f4d3958 | 2012 | { |
0112cd26 NC |
2013 | { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2014 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2015 | { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 }, | |
2016 | { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 }, | |
2017 | { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 }, | |
2018 | { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC }, | |
2019 | { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC }, | |
2020 | { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC }, | |
2021 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2022 | }; |
2023 | ||
b35d266b | 2024 | static const struct bfd_elf_special_section special_sections_h[] = |
7f4d3958 | 2025 | { |
0112cd26 NC |
2026 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC }, |
2027 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2028 | }; |
2029 | ||
b35d266b | 2030 | static const struct bfd_elf_special_section special_sections_i[] = |
7f4d3958 | 2031 | { |
0112cd26 NC |
2032 | { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2033 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2034 | { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 }, | |
2035 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2036 | }; |
2037 | ||
b35d266b | 2038 | static const struct bfd_elf_special_section special_sections_l[] = |
7f4d3958 | 2039 | { |
0112cd26 NC |
2040 | { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 }, |
2041 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2042 | }; |
2043 | ||
b35d266b | 2044 | static const struct bfd_elf_special_section special_sections_n[] = |
7f4d3958 | 2045 | { |
0112cd26 NC |
2046 | { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 }, |
2047 | { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 }, | |
2048 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2049 | }; |
2050 | ||
b35d266b | 2051 | static const struct bfd_elf_special_section special_sections_p[] = |
7f4d3958 | 2052 | { |
0112cd26 NC |
2053 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, |
2054 | { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2055 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2056 | }; |
2057 | ||
b35d266b | 2058 | static const struct bfd_elf_special_section special_sections_r[] = |
7f4d3958 | 2059 | { |
0112cd26 NC |
2060 | { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC }, |
2061 | { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC }, | |
2062 | { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 }, | |
2063 | { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 }, | |
2064 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2065 | }; |
2066 | ||
b35d266b | 2067 | static const struct bfd_elf_special_section special_sections_s[] = |
7f4d3958 | 2068 | { |
0112cd26 NC |
2069 | { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 }, |
2070 | { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 }, | |
2071 | { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 }, | |
60ff4dc4 HPN |
2072 | /* See struct bfd_elf_special_section declaration for the semantics of |
2073 | this special case where .prefix_length != strlen (.prefix). */ | |
2074 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
0112cd26 | 2075 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2076 | }; |
2077 | ||
b35d266b | 2078 | static const struct bfd_elf_special_section special_sections_t[] = |
7f4d3958 | 2079 | { |
0112cd26 NC |
2080 | { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, |
2081 | { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2082 | { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2083 | { NULL, 0, 0, 0, 0 } | |
7f4d3958 L |
2084 | }; |
2085 | ||
b35d266b | 2086 | static const struct bfd_elf_special_section *special_sections[] = |
7f4d3958 | 2087 | { |
7f4d3958 | 2088 | special_sections_b, /* 'b' */ |
98ece1b3 | 2089 | special_sections_c, /* 'c' */ |
7f4d3958 L |
2090 | special_sections_d, /* 'd' */ |
2091 | NULL, /* 'e' */ | |
2092 | special_sections_f, /* 'f' */ | |
2093 | special_sections_g, /* 'g' */ | |
2094 | special_sections_h, /* 'h' */ | |
2095 | special_sections_i, /* 'i' */ | |
2096 | NULL, /* 'j' */ | |
2097 | NULL, /* 'k' */ | |
2098 | special_sections_l, /* 'l' */ | |
2099 | NULL, /* 'm' */ | |
2100 | special_sections_n, /* 'n' */ | |
2101 | NULL, /* 'o' */ | |
2102 | special_sections_p, /* 'p' */ | |
2103 | NULL, /* 'q' */ | |
2104 | special_sections_r, /* 'r' */ | |
2105 | special_sections_s, /* 's' */ | |
2106 | special_sections_t, /* 't' */ | |
7f4d3958 L |
2107 | }; |
2108 | ||
551b43fd AM |
2109 | const struct bfd_elf_special_section * |
2110 | _bfd_elf_get_special_section (const char *name, | |
2111 | const struct bfd_elf_special_section *spec, | |
2112 | unsigned int rela) | |
2f89ff8d L |
2113 | { |
2114 | int i; | |
7f4d3958 | 2115 | int len; |
7f4d3958 | 2116 | |
551b43fd | 2117 | len = strlen (name); |
7f4d3958 | 2118 | |
551b43fd | 2119 | for (i = 0; spec[i].prefix != NULL; i++) |
7dcb9820 AM |
2120 | { |
2121 | int suffix_len; | |
551b43fd | 2122 | int prefix_len = spec[i].prefix_length; |
7dcb9820 AM |
2123 | |
2124 | if (len < prefix_len) | |
2125 | continue; | |
551b43fd | 2126 | if (memcmp (name, spec[i].prefix, prefix_len) != 0) |
7dcb9820 AM |
2127 | continue; |
2128 | ||
551b43fd | 2129 | suffix_len = spec[i].suffix_length; |
7dcb9820 AM |
2130 | if (suffix_len <= 0) |
2131 | { | |
2132 | if (name[prefix_len] != 0) | |
2133 | { | |
2134 | if (suffix_len == 0) | |
2135 | continue; | |
2136 | if (name[prefix_len] != '.' | |
2137 | && (suffix_len == -2 | |
551b43fd | 2138 | || (rela && spec[i].type == SHT_REL))) |
7dcb9820 AM |
2139 | continue; |
2140 | } | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | if (len < prefix_len + suffix_len) | |
2145 | continue; | |
2146 | if (memcmp (name + len - suffix_len, | |
551b43fd | 2147 | spec[i].prefix + prefix_len, |
7dcb9820 AM |
2148 | suffix_len) != 0) |
2149 | continue; | |
2150 | } | |
551b43fd | 2151 | return &spec[i]; |
7dcb9820 | 2152 | } |
2f89ff8d L |
2153 | |
2154 | return NULL; | |
2155 | } | |
2156 | ||
7dcb9820 | 2157 | const struct bfd_elf_special_section * |
29ef7005 | 2158 | _bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec) |
2f89ff8d | 2159 | { |
551b43fd AM |
2160 | int i; |
2161 | const struct bfd_elf_special_section *spec; | |
29ef7005 | 2162 | const struct elf_backend_data *bed; |
2f89ff8d L |
2163 | |
2164 | /* See if this is one of the special sections. */ | |
551b43fd AM |
2165 | if (sec->name == NULL) |
2166 | return NULL; | |
2f89ff8d | 2167 | |
29ef7005 L |
2168 | bed = get_elf_backend_data (abfd); |
2169 | spec = bed->special_sections; | |
2170 | if (spec) | |
2171 | { | |
2172 | spec = _bfd_elf_get_special_section (sec->name, | |
2173 | bed->special_sections, | |
2174 | sec->use_rela_p); | |
2175 | if (spec != NULL) | |
2176 | return spec; | |
2177 | } | |
2178 | ||
551b43fd AM |
2179 | if (sec->name[0] != '.') |
2180 | return NULL; | |
2f89ff8d | 2181 | |
551b43fd AM |
2182 | i = sec->name[1] - 'b'; |
2183 | if (i < 0 || i > 't' - 'b') | |
2184 | return NULL; | |
2185 | ||
2186 | spec = special_sections[i]; | |
2f89ff8d | 2187 | |
551b43fd AM |
2188 | if (spec == NULL) |
2189 | return NULL; | |
2190 | ||
2191 | return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p); | |
2f89ff8d L |
2192 | } |
2193 | ||
b34976b6 | 2194 | bfd_boolean |
217aa764 | 2195 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2196 | { |
2197 | struct bfd_elf_section_data *sdata; | |
551b43fd | 2198 | const struct elf_backend_data *bed; |
7dcb9820 | 2199 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2200 | |
f0abc2a1 AM |
2201 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2202 | if (sdata == NULL) | |
2203 | { | |
217aa764 | 2204 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2205 | if (sdata == NULL) |
2206 | return FALSE; | |
217aa764 | 2207 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2208 | } |
bf572ba0 | 2209 | |
551b43fd AM |
2210 | /* Indicate whether or not this section should use RELA relocations. */ |
2211 | bed = get_elf_backend_data (abfd); | |
2212 | sec->use_rela_p = bed->default_use_rela_p; | |
2213 | ||
e843e0f8 L |
2214 | /* When we read a file, we don't need to set ELF section type and |
2215 | flags. They will be overridden in _bfd_elf_make_section_from_shdr | |
2216 | anyway. We will set ELF section type and flags for all linker | |
2217 | created sections. If user specifies BFD section flags, we will | |
2218 | set ELF section type and flags based on BFD section flags in | |
2219 | elf_fake_sections. */ | |
2220 | if ((!sec->flags && abfd->direction != read_direction) | |
3496cb2a | 2221 | || (sec->flags & SEC_LINKER_CREATED) != 0) |
2f89ff8d | 2222 | { |
551b43fd | 2223 | ssect = (*bed->get_sec_type_attr) (abfd, sec); |
a31501e9 L |
2224 | if (ssect != NULL) |
2225 | { | |
2226 | elf_section_type (sec) = ssect->type; | |
2227 | elf_section_flags (sec) = ssect->attr; | |
2228 | } | |
2f89ff8d L |
2229 | } |
2230 | ||
f592407e | 2231 | return _bfd_generic_new_section_hook (abfd, sec); |
252b5132 RH |
2232 | } |
2233 | ||
2234 | /* Create a new bfd section from an ELF program header. | |
2235 | ||
2236 | Since program segments have no names, we generate a synthetic name | |
2237 | of the form segment<NUM>, where NUM is generally the index in the | |
2238 | program header table. For segments that are split (see below) we | |
2239 | generate the names segment<NUM>a and segment<NUM>b. | |
2240 | ||
2241 | Note that some program segments may have a file size that is different than | |
2242 | (less than) the memory size. All this means is that at execution the | |
2243 | system must allocate the amount of memory specified by the memory size, | |
2244 | but only initialize it with the first "file size" bytes read from the | |
2245 | file. This would occur for example, with program segments consisting | |
2246 | of combined data+bss. | |
2247 | ||
2248 | To handle the above situation, this routine generates TWO bfd sections | |
2249 | for the single program segment. The first has the length specified by | |
2250 | the file size of the segment, and the second has the length specified | |
2251 | by the difference between the two sizes. In effect, the segment is split | |
d5191d0c | 2252 | into its initialized and uninitialized parts. |
252b5132 RH |
2253 | |
2254 | */ | |
2255 | ||
b34976b6 | 2256 | bfd_boolean |
217aa764 AM |
2257 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2258 | Elf_Internal_Phdr *hdr, | |
2259 | int index, | |
2260 | const char *typename) | |
252b5132 RH |
2261 | { |
2262 | asection *newsect; | |
2263 | char *name; | |
2264 | char namebuf[64]; | |
d4c88bbb | 2265 | size_t len; |
252b5132 RH |
2266 | int split; |
2267 | ||
2268 | split = ((hdr->p_memsz > 0) | |
2269 | && (hdr->p_filesz > 0) | |
2270 | && (hdr->p_memsz > hdr->p_filesz)); | |
d5191d0c AM |
2271 | |
2272 | if (hdr->p_filesz > 0) | |
252b5132 | 2273 | { |
d5191d0c AM |
2274 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
2275 | len = strlen (namebuf) + 1; | |
2276 | name = bfd_alloc (abfd, len); | |
2277 | if (!name) | |
2278 | return FALSE; | |
2279 | memcpy (name, namebuf, len); | |
2280 | newsect = bfd_make_section (abfd, name); | |
2281 | if (newsect == NULL) | |
2282 | return FALSE; | |
2283 | newsect->vma = hdr->p_vaddr; | |
2284 | newsect->lma = hdr->p_paddr; | |
2285 | newsect->size = hdr->p_filesz; | |
2286 | newsect->filepos = hdr->p_offset; | |
2287 | newsect->flags |= SEC_HAS_CONTENTS; | |
2288 | newsect->alignment_power = bfd_log2 (hdr->p_align); | |
2289 | if (hdr->p_type == PT_LOAD) | |
252b5132 | 2290 | { |
d5191d0c AM |
2291 | newsect->flags |= SEC_ALLOC; |
2292 | newsect->flags |= SEC_LOAD; | |
2293 | if (hdr->p_flags & PF_X) | |
2294 | { | |
2295 | /* FIXME: all we known is that it has execute PERMISSION, | |
2296 | may be data. */ | |
2297 | newsect->flags |= SEC_CODE; | |
2298 | } | |
2299 | } | |
2300 | if (!(hdr->p_flags & PF_W)) | |
2301 | { | |
2302 | newsect->flags |= SEC_READONLY; | |
252b5132 | 2303 | } |
252b5132 RH |
2304 | } |
2305 | ||
d5191d0c | 2306 | if (hdr->p_memsz > hdr->p_filesz) |
252b5132 | 2307 | { |
d5191d0c AM |
2308 | bfd_vma align; |
2309 | ||
2310 | sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : ""); | |
d4c88bbb | 2311 | len = strlen (namebuf) + 1; |
217aa764 | 2312 | name = bfd_alloc (abfd, len); |
252b5132 | 2313 | if (!name) |
b34976b6 | 2314 | return FALSE; |
d4c88bbb | 2315 | memcpy (name, namebuf, len); |
252b5132 RH |
2316 | newsect = bfd_make_section (abfd, name); |
2317 | if (newsect == NULL) | |
b34976b6 | 2318 | return FALSE; |
252b5132 RH |
2319 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2320 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2321 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
d5191d0c AM |
2322 | newsect->filepos = hdr->p_offset + hdr->p_filesz; |
2323 | align = newsect->vma & -newsect->vma; | |
2324 | if (align == 0 || align > hdr->p_align) | |
2325 | align = hdr->p_align; | |
2326 | newsect->alignment_power = bfd_log2 (align); | |
252b5132 RH |
2327 | if (hdr->p_type == PT_LOAD) |
2328 | { | |
d5191d0c AM |
2329 | /* Hack for gdb. Segments that have not been modified do |
2330 | not have their contents written to a core file, on the | |
2331 | assumption that a debugger can find the contents in the | |
2332 | executable. We flag this case by setting the fake | |
2333 | section size to zero. Note that "real" bss sections will | |
2334 | always have their contents dumped to the core file. */ | |
2335 | if (bfd_get_format (abfd) == bfd_core) | |
2336 | newsect->size = 0; | |
252b5132 RH |
2337 | newsect->flags |= SEC_ALLOC; |
2338 | if (hdr->p_flags & PF_X) | |
2339 | newsect->flags |= SEC_CODE; | |
2340 | } | |
2341 | if (!(hdr->p_flags & PF_W)) | |
2342 | newsect->flags |= SEC_READONLY; | |
2343 | } | |
2344 | ||
b34976b6 | 2345 | return TRUE; |
252b5132 RH |
2346 | } |
2347 | ||
b34976b6 | 2348 | bfd_boolean |
217aa764 | 2349 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2350 | { |
9c5bfbb7 | 2351 | const struct elf_backend_data *bed; |
20cfcaae NC |
2352 | |
2353 | switch (hdr->p_type) | |
2354 | { | |
2355 | case PT_NULL: | |
2356 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2357 | ||
2358 | case PT_LOAD: | |
2359 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2360 | ||
2361 | case PT_DYNAMIC: | |
2362 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2363 | ||
2364 | case PT_INTERP: | |
2365 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2366 | ||
2367 | case PT_NOTE: | |
2368 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2369 | return FALSE; |
718175fa | 2370 | if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2371 | return FALSE; |
2372 | return TRUE; | |
20cfcaae NC |
2373 | |
2374 | case PT_SHLIB: | |
2375 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2376 | ||
2377 | case PT_PHDR: | |
2378 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2379 | ||
811072d8 RM |
2380 | case PT_GNU_EH_FRAME: |
2381 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2382 | "eh_frame_hdr"); | |
2383 | ||
2b05f1b7 L |
2384 | case PT_GNU_STACK: |
2385 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
9ee5e499 | 2386 | |
8c37241b JJ |
2387 | case PT_GNU_RELRO: |
2388 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2389 | ||
20cfcaae | 2390 | default: |
8c1acd09 | 2391 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2392 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2393 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2394 | } |
2395 | } | |
2396 | ||
23bc299b | 2397 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2398 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2399 | relocations; otherwise, we use REL relocations. */ |
2400 | ||
b34976b6 | 2401 | bfd_boolean |
217aa764 AM |
2402 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2403 | Elf_Internal_Shdr *rel_hdr, | |
2404 | asection *asect, | |
2405 | bfd_boolean use_rela_p) | |
23bc299b MM |
2406 | { |
2407 | char *name; | |
9c5bfbb7 | 2408 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2409 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2410 | |
dc810e39 | 2411 | name = bfd_alloc (abfd, amt); |
23bc299b | 2412 | if (name == NULL) |
b34976b6 | 2413 | return FALSE; |
23bc299b MM |
2414 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2415 | rel_hdr->sh_name = | |
2b0f7ef9 | 2416 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2417 | FALSE); |
23bc299b | 2418 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2419 | return FALSE; |
23bc299b MM |
2420 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2421 | rel_hdr->sh_entsize = (use_rela_p | |
2422 | ? bed->s->sizeof_rela | |
2423 | : bed->s->sizeof_rel); | |
45d6a902 | 2424 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2425 | rel_hdr->sh_flags = 0; |
2426 | rel_hdr->sh_addr = 0; | |
2427 | rel_hdr->sh_size = 0; | |
2428 | rel_hdr->sh_offset = 0; | |
2429 | ||
b34976b6 | 2430 | return TRUE; |
23bc299b MM |
2431 | } |
2432 | ||
252b5132 RH |
2433 | /* Set up an ELF internal section header for a section. */ |
2434 | ||
252b5132 | 2435 | static void |
217aa764 | 2436 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2437 | { |
9c5bfbb7 | 2438 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2439 | bfd_boolean *failedptr = failedptrarg; |
252b5132 | 2440 | Elf_Internal_Shdr *this_hdr; |
0414f35b | 2441 | unsigned int sh_type; |
252b5132 RH |
2442 | |
2443 | if (*failedptr) | |
2444 | { | |
2445 | /* We already failed; just get out of the bfd_map_over_sections | |
08a40648 | 2446 | loop. */ |
252b5132 RH |
2447 | return; |
2448 | } | |
2449 | ||
2450 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2451 | ||
e57b5356 AM |
2452 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2453 | asect->name, FALSE); | |
2454 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2455 | { |
b34976b6 | 2456 | *failedptr = TRUE; |
252b5132 RH |
2457 | return; |
2458 | } | |
2459 | ||
a4d8e49b | 2460 | /* Don't clear sh_flags. Assembler may set additional bits. */ |
252b5132 RH |
2461 | |
2462 | if ((asect->flags & SEC_ALLOC) != 0 | |
2463 | || asect->user_set_vma) | |
2464 | this_hdr->sh_addr = asect->vma; | |
2465 | else | |
2466 | this_hdr->sh_addr = 0; | |
2467 | ||
2468 | this_hdr->sh_offset = 0; | |
eea6121a | 2469 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2470 | this_hdr->sh_link = 0; |
2471 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2472 | /* The sh_entsize and sh_info fields may have been set already by | |
2473 | copy_private_section_data. */ | |
2474 | ||
2475 | this_hdr->bfd_section = asect; | |
2476 | this_hdr->contents = NULL; | |
2477 | ||
3cddba1e L |
2478 | /* If the section type is unspecified, we set it based on |
2479 | asect->flags. */ | |
98ece1b3 AM |
2480 | if ((asect->flags & SEC_GROUP) != 0) |
2481 | sh_type = SHT_GROUP; | |
2482 | else if ((asect->flags & SEC_ALLOC) != 0 | |
2483 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
2484 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2485 | sh_type = SHT_NOBITS; | |
2486 | else | |
2487 | sh_type = SHT_PROGBITS; | |
2488 | ||
3cddba1e | 2489 | if (this_hdr->sh_type == SHT_NULL) |
98ece1b3 AM |
2490 | this_hdr->sh_type = sh_type; |
2491 | else if (this_hdr->sh_type == SHT_NOBITS | |
2492 | && sh_type == SHT_PROGBITS | |
2493 | && (asect->flags & SEC_ALLOC) != 0) | |
3cddba1e | 2494 | { |
98ece1b3 AM |
2495 | /* Warn if we are changing a NOBITS section to PROGBITS, but |
2496 | allow the link to proceed. This can happen when users link | |
2497 | non-bss input sections to bss output sections, or emit data | |
2498 | to a bss output section via a linker script. */ | |
2499 | (*_bfd_error_handler) | |
2500 | (_("section `%A' type changed to PROGBITS"), asect); | |
2501 | this_hdr->sh_type = sh_type; | |
3cddba1e L |
2502 | } |
2503 | ||
2f89ff8d | 2504 | switch (this_hdr->sh_type) |
252b5132 | 2505 | { |
2f89ff8d | 2506 | default: |
2f89ff8d L |
2507 | break; |
2508 | ||
2509 | case SHT_STRTAB: | |
2510 | case SHT_INIT_ARRAY: | |
2511 | case SHT_FINI_ARRAY: | |
2512 | case SHT_PREINIT_ARRAY: | |
2513 | case SHT_NOTE: | |
2514 | case SHT_NOBITS: | |
2515 | case SHT_PROGBITS: | |
2516 | break; | |
2517 | ||
2518 | case SHT_HASH: | |
c7ac6ff8 | 2519 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2520 | break; |
5de3bf90 | 2521 | |
2f89ff8d | 2522 | case SHT_DYNSYM: |
252b5132 | 2523 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2524 | break; |
2525 | ||
2526 | case SHT_DYNAMIC: | |
252b5132 | 2527 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2528 | break; |
2529 | ||
2530 | case SHT_RELA: | |
2531 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2532 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2533 | break; | |
2534 | ||
2535 | case SHT_REL: | |
2536 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2537 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2538 | break; | |
2539 | ||
2540 | case SHT_GNU_versym: | |
252b5132 | 2541 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2542 | break; |
2543 | ||
2544 | case SHT_GNU_verdef: | |
252b5132 RH |
2545 | this_hdr->sh_entsize = 0; |
2546 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2547 | cverdefs. The linker will set cverdefs, but sh_info will be |
2548 | zero. */ | |
252b5132 RH |
2549 | if (this_hdr->sh_info == 0) |
2550 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2551 | else | |
2552 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2553 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2554 | break; |
2555 | ||
2556 | case SHT_GNU_verneed: | |
252b5132 RH |
2557 | this_hdr->sh_entsize = 0; |
2558 | /* objcopy or strip will copy over sh_info, but may not set | |
08a40648 AM |
2559 | cverrefs. The linker will set cverrefs, but sh_info will be |
2560 | zero. */ | |
252b5132 RH |
2561 | if (this_hdr->sh_info == 0) |
2562 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2563 | else | |
2564 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2565 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2566 | break; |
2567 | ||
2568 | case SHT_GROUP: | |
1783205a | 2569 | this_hdr->sh_entsize = GRP_ENTRY_SIZE; |
2f89ff8d | 2570 | break; |
fdc90cb4 JJ |
2571 | |
2572 | case SHT_GNU_HASH: | |
2573 | this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4; | |
2574 | break; | |
dbb410c3 | 2575 | } |
252b5132 RH |
2576 | |
2577 | if ((asect->flags & SEC_ALLOC) != 0) | |
2578 | this_hdr->sh_flags |= SHF_ALLOC; | |
2579 | if ((asect->flags & SEC_READONLY) == 0) | |
2580 | this_hdr->sh_flags |= SHF_WRITE; | |
2581 | if ((asect->flags & SEC_CODE) != 0) | |
2582 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2583 | if ((asect->flags & SEC_MERGE) != 0) |
2584 | { | |
2585 | this_hdr->sh_flags |= SHF_MERGE; | |
2586 | this_hdr->sh_entsize = asect->entsize; | |
2587 | if ((asect->flags & SEC_STRINGS) != 0) | |
2588 | this_hdr->sh_flags |= SHF_STRINGS; | |
2589 | } | |
1126897b | 2590 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2591 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2592 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2593 | { |
2594 | this_hdr->sh_flags |= SHF_TLS; | |
3a800eb9 AM |
2595 | if (asect->size == 0 |
2596 | && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
704afa60 | 2597 | { |
3a800eb9 | 2598 | struct bfd_link_order *o = asect->map_tail.link_order; |
b34976b6 | 2599 | |
704afa60 | 2600 | this_hdr->sh_size = 0; |
3a800eb9 AM |
2601 | if (o != NULL) |
2602 | { | |
704afa60 | 2603 | this_hdr->sh_size = o->offset + o->size; |
3a800eb9 AM |
2604 | if (this_hdr->sh_size != 0) |
2605 | this_hdr->sh_type = SHT_NOBITS; | |
2606 | } | |
704afa60 JJ |
2607 | } |
2608 | } | |
252b5132 RH |
2609 | |
2610 | /* Check for processor-specific section types. */ | |
0414f35b | 2611 | sh_type = this_hdr->sh_type; |
e1fddb6b AO |
2612 | if (bed->elf_backend_fake_sections |
2613 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2614 | *failedptr = TRUE; |
252b5132 | 2615 | |
42bb2e33 | 2616 | if (sh_type == SHT_NOBITS && asect->size != 0) |
0414f35b AM |
2617 | { |
2618 | /* Don't change the header type from NOBITS if we are being | |
42bb2e33 | 2619 | called for objcopy --only-keep-debug. */ |
0414f35b AM |
2620 | this_hdr->sh_type = sh_type; |
2621 | } | |
2622 | ||
252b5132 | 2623 | /* If the section has relocs, set up a section header for the |
23bc299b MM |
2624 | SHT_REL[A] section. If two relocation sections are required for |
2625 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2626 | create the other. */ |
23bc299b | 2627 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2628 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2629 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2630 | asect, |
68bfbfcc | 2631 | asect->use_rela_p)) |
b34976b6 | 2632 | *failedptr = TRUE; |
252b5132 RH |
2633 | } |
2634 | ||
dbb410c3 AM |
2635 | /* Fill in the contents of a SHT_GROUP section. */ |
2636 | ||
1126897b | 2637 | void |
217aa764 | 2638 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2639 | { |
217aa764 | 2640 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2641 | unsigned long symindx; |
9dce4196 | 2642 | asection *elt, *first; |
dbb410c3 | 2643 | unsigned char *loc; |
b34976b6 | 2644 | bfd_boolean gas; |
dbb410c3 | 2645 | |
7e4111ad L |
2646 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2647 | elfxx-ia64.c. */ | |
2648 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2649 | || *failedptr) |
2650 | return; | |
2651 | ||
1126897b AM |
2652 | symindx = 0; |
2653 | if (elf_group_id (sec) != NULL) | |
2654 | symindx = elf_group_id (sec)->udata.i; | |
2655 | ||
2656 | if (symindx == 0) | |
2657 | { | |
2658 | /* If called from the assembler, swap_out_syms will have set up | |
2659 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2660 | if (elf_section_syms (abfd) != NULL) | |
2661 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2662 | else | |
2663 | symindx = sec->target_index; | |
2664 | } | |
dbb410c3 AM |
2665 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2666 | ||
1126897b | 2667 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2668 | gas = TRUE; |
dbb410c3 AM |
2669 | if (sec->contents == NULL) |
2670 | { | |
b34976b6 | 2671 | gas = FALSE; |
eea6121a | 2672 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2673 | |
2674 | /* Arrange for the section to be written out. */ | |
2675 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2676 | if (sec->contents == NULL) |
2677 | { | |
b34976b6 | 2678 | *failedptr = TRUE; |
dbb410c3 AM |
2679 | return; |
2680 | } | |
2681 | } | |
2682 | ||
eea6121a | 2683 | loc = sec->contents + sec->size; |
dbb410c3 | 2684 | |
9dce4196 AM |
2685 | /* Get the pointer to the first section in the group that gas |
2686 | squirreled away here. objcopy arranges for this to be set to the | |
2687 | start of the input section group. */ | |
2688 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2689 | |
2690 | /* First element is a flag word. Rest of section is elf section | |
2691 | indices for all the sections of the group. Write them backwards | |
2692 | just to keep the group in the same order as given in .section | |
2693 | directives, not that it matters. */ | |
2694 | while (elt != NULL) | |
2695 | { | |
9dce4196 AM |
2696 | asection *s; |
2697 | unsigned int idx; | |
2698 | ||
dbb410c3 | 2699 | loc -= 4; |
9dce4196 AM |
2700 | s = elt; |
2701 | if (!gas) | |
2702 | s = s->output_section; | |
2703 | idx = 0; | |
2704 | if (s != NULL) | |
2705 | idx = elf_section_data (s)->this_idx; | |
2706 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2707 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2708 | if (elt == first) |
2709 | break; | |
dbb410c3 AM |
2710 | } |
2711 | ||
3d7f7666 | 2712 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2713 | abort (); |
dbb410c3 | 2714 | |
9dce4196 | 2715 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2716 | } |
2717 | ||
252b5132 RH |
2718 | /* Assign all ELF section numbers. The dummy first section is handled here |
2719 | too. The link/info pointers for the standard section types are filled | |
2720 | in here too, while we're at it. */ | |
2721 | ||
b34976b6 | 2722 | static bfd_boolean |
da9f89d4 | 2723 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2724 | { |
2725 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2726 | asection *sec; | |
2b0f7ef9 | 2727 | unsigned int section_number, secn; |
252b5132 | 2728 | Elf_Internal_Shdr **i_shdrp; |
47cc2cf5 | 2729 | struct bfd_elf_section_data *d; |
252b5132 RH |
2730 | |
2731 | section_number = 1; | |
2732 | ||
2b0f7ef9 JJ |
2733 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2734 | ||
da9f89d4 L |
2735 | /* SHT_GROUP sections are in relocatable files only. */ |
2736 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2737 | { |
da9f89d4 | 2738 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2739 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2740 | { |
5daa8fe7 | 2741 | d = elf_section_data (sec); |
da9f89d4 L |
2742 | |
2743 | if (d->this_hdr.sh_type == SHT_GROUP) | |
08a40648 | 2744 | { |
5daa8fe7 | 2745 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2746 | { |
2747 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2748 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2749 | abfd->section_count--; |
da9f89d4 | 2750 | } |
08a40648 | 2751 | else |
da9f89d4 L |
2752 | { |
2753 | if (section_number == SHN_LORESERVE) | |
2754 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2755 | d->this_idx = section_number++; | |
2756 | } | |
2757 | } | |
47cc2cf5 PB |
2758 | } |
2759 | } | |
2760 | ||
2761 | for (sec = abfd->sections; sec; sec = sec->next) | |
2762 | { | |
2763 | d = elf_section_data (sec); | |
2764 | ||
2765 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2766 | { | |
2767 | if (section_number == SHN_LORESERVE) | |
2768 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2769 | d->this_idx = section_number++; | |
2770 | } | |
2b0f7ef9 | 2771 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2772 | if ((sec->flags & SEC_RELOC) == 0) |
2773 | d->rel_idx = 0; | |
2774 | else | |
2b0f7ef9 | 2775 | { |
9ad5cbcf AM |
2776 | if (section_number == SHN_LORESERVE) |
2777 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2778 | d->rel_idx = section_number++; |
2779 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2780 | } | |
23bc299b MM |
2781 | |
2782 | if (d->rel_hdr2) | |
2b0f7ef9 | 2783 | { |
9ad5cbcf AM |
2784 | if (section_number == SHN_LORESERVE) |
2785 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2786 | d->rel_idx2 = section_number++; |
2787 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2788 | } | |
23bc299b MM |
2789 | else |
2790 | d->rel_idx2 = 0; | |
252b5132 RH |
2791 | } |
2792 | ||
9ad5cbcf AM |
2793 | if (section_number == SHN_LORESERVE) |
2794 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2795 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2796 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2797 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2798 | |
2799 | if (bfd_get_symcount (abfd) > 0) | |
2800 | { | |
9ad5cbcf AM |
2801 | if (section_number == SHN_LORESERVE) |
2802 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2803 | t->symtab_section = section_number++; |
2b0f7ef9 | 2804 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2805 | if (section_number > SHN_LORESERVE - 2) |
2806 | { | |
2807 | if (section_number == SHN_LORESERVE) | |
2808 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2809 | t->symtab_shndx_section = section_number++; | |
2810 | t->symtab_shndx_hdr.sh_name | |
2811 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2812 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2813 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2814 | return FALSE; |
9ad5cbcf AM |
2815 | } |
2816 | if (section_number == SHN_LORESERVE) | |
2817 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2818 | t->strtab_section = section_number++; |
2b0f7ef9 | 2819 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2820 | } |
2821 | ||
2b0f7ef9 JJ |
2822 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2823 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2824 | |
2825 | elf_numsections (abfd) = section_number; | |
252b5132 | 2826 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2827 | if (section_number > SHN_LORESERVE) |
2828 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2829 | |
2830 | /* Set up the list of section header pointers, in agreement with the | |
2831 | indices. */ | |
d0fb9a8d | 2832 | i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *)); |
252b5132 | 2833 | if (i_shdrp == NULL) |
b34976b6 | 2834 | return FALSE; |
252b5132 | 2835 | |
d0fb9a8d | 2836 | i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr)); |
252b5132 RH |
2837 | if (i_shdrp[0] == NULL) |
2838 | { | |
2839 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2840 | return FALSE; |
252b5132 | 2841 | } |
252b5132 RH |
2842 | |
2843 | elf_elfsections (abfd) = i_shdrp; | |
2844 | ||
2845 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2846 | if (bfd_get_symcount (abfd) > 0) | |
2847 | { | |
2848 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2849 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2850 | { | |
2851 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2852 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2853 | } | |
252b5132 RH |
2854 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2855 | t->symtab_hdr.sh_link = t->strtab_section; | |
2856 | } | |
38ce5b11 | 2857 | |
252b5132 RH |
2858 | for (sec = abfd->sections; sec; sec = sec->next) |
2859 | { | |
2860 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2861 | asection *s; | |
2862 | const char *name; | |
2863 | ||
2864 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2865 | if (d->rel_idx != 0) | |
2866 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2867 | if (d->rel_idx2 != 0) |
2868 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2869 | |
2870 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2871 | ||
2872 | /* sh_link of a reloc section is the section index of the symbol | |
2873 | table. sh_info is the section index of the section to which | |
2874 | the relocation entries apply. */ | |
2875 | if (d->rel_idx != 0) | |
2876 | { | |
2877 | d->rel_hdr.sh_link = t->symtab_section; | |
2878 | d->rel_hdr.sh_info = d->this_idx; | |
2879 | } | |
23bc299b MM |
2880 | if (d->rel_idx2 != 0) |
2881 | { | |
2882 | d->rel_hdr2->sh_link = t->symtab_section; | |
2883 | d->rel_hdr2->sh_info = d->this_idx; | |
2884 | } | |
252b5132 | 2885 | |
38ce5b11 L |
2886 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2887 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2888 | { | |
2889 | s = elf_linked_to_section (sec); | |
2890 | if (s) | |
38ce5b11 | 2891 | { |
f2876037 | 2892 | /* elf_linked_to_section points to the input section. */ |
ccd2ec6a | 2893 | if (link_info != NULL) |
38ce5b11 | 2894 | { |
f2876037 | 2895 | /* Check discarded linkonce section. */ |
ccd2ec6a | 2896 | if (elf_discarded_section (s)) |
38ce5b11 | 2897 | { |
ccd2ec6a L |
2898 | asection *kept; |
2899 | (*_bfd_error_handler) | |
2900 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2901 | abfd, d->this_hdr.bfd_section, | |
2902 | s, s->owner); | |
2903 | /* Point to the kept section if it has the same | |
2904 | size as the discarded one. */ | |
c0f00686 | 2905 | kept = _bfd_elf_check_kept_section (s, link_info); |
ccd2ec6a | 2906 | if (kept == NULL) |
185d09ad | 2907 | { |
ccd2ec6a L |
2908 | bfd_set_error (bfd_error_bad_value); |
2909 | return FALSE; | |
185d09ad | 2910 | } |
ccd2ec6a | 2911 | s = kept; |
38ce5b11 | 2912 | } |
e424ecc8 | 2913 | |
ccd2ec6a L |
2914 | s = s->output_section; |
2915 | BFD_ASSERT (s != NULL); | |
38ce5b11 | 2916 | } |
f2876037 L |
2917 | else |
2918 | { | |
2919 | /* Handle objcopy. */ | |
2920 | if (s->output_section == NULL) | |
2921 | { | |
2922 | (*_bfd_error_handler) | |
2923 | (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"), | |
2924 | abfd, d->this_hdr.bfd_section, s, s->owner); | |
2925 | bfd_set_error (bfd_error_bad_value); | |
2926 | return FALSE; | |
2927 | } | |
2928 | s = s->output_section; | |
2929 | } | |
ccd2ec6a L |
2930 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; |
2931 | } | |
2932 | else | |
2933 | { | |
2934 | /* PR 290: | |
2935 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2936 | SHF_LINK_ORDER. But it doesn't set the sh_link or | |
2937 | sh_info fields. Hence we could get the situation | |
08a40648 | 2938 | where s is NULL. */ |
ccd2ec6a L |
2939 | const struct elf_backend_data *bed |
2940 | = get_elf_backend_data (abfd); | |
2941 | if (bed->link_order_error_handler) | |
2942 | bed->link_order_error_handler | |
2943 | (_("%B: warning: sh_link not set for section `%A'"), | |
2944 | abfd, sec); | |
38ce5b11 L |
2945 | } |
2946 | } | |
2947 | ||
252b5132 RH |
2948 | switch (d->this_hdr.sh_type) |
2949 | { | |
2950 | case SHT_REL: | |
2951 | case SHT_RELA: | |
2952 | /* A reloc section which we are treating as a normal BFD | |
2953 | section. sh_link is the section index of the symbol | |
2954 | table. sh_info is the section index of the section to | |
2955 | which the relocation entries apply. We assume that an | |
2956 | allocated reloc section uses the dynamic symbol table. | |
2957 | FIXME: How can we be sure? */ | |
2958 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2959 | if (s != NULL) | |
2960 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2961 | ||
2962 | /* We look up the section the relocs apply to by name. */ | |
2963 | name = sec->name; | |
2964 | if (d->this_hdr.sh_type == SHT_REL) | |
2965 | name += 4; | |
2966 | else | |
2967 | name += 5; | |
2968 | s = bfd_get_section_by_name (abfd, name); | |
2969 | if (s != NULL) | |
2970 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
2971 | break; | |
2972 | ||
2973 | case SHT_STRTAB: | |
2974 | /* We assume that a section named .stab*str is a stabs | |
2975 | string section. We look for a section with the same name | |
2976 | but without the trailing ``str'', and set its sh_link | |
2977 | field to point to this section. */ | |
0112cd26 | 2978 | if (CONST_STRNEQ (sec->name, ".stab") |
252b5132 RH |
2979 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) |
2980 | { | |
2981 | size_t len; | |
2982 | char *alc; | |
2983 | ||
2984 | len = strlen (sec->name); | |
217aa764 | 2985 | alc = bfd_malloc (len - 2); |
252b5132 | 2986 | if (alc == NULL) |
b34976b6 | 2987 | return FALSE; |
d4c88bbb | 2988 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
2989 | alc[len - 3] = '\0'; |
2990 | s = bfd_get_section_by_name (abfd, alc); | |
2991 | free (alc); | |
2992 | if (s != NULL) | |
2993 | { | |
2994 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
2995 | ||
2996 | /* This is a .stab section. */ | |
0594c12d AM |
2997 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
2998 | elf_section_data (s)->this_hdr.sh_entsize | |
2999 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3000 | } |
3001 | } | |
3002 | break; | |
3003 | ||
3004 | case SHT_DYNAMIC: | |
3005 | case SHT_DYNSYM: | |
3006 | case SHT_GNU_verneed: | |
3007 | case SHT_GNU_verdef: | |
3008 | /* sh_link is the section header index of the string table | |
3009 | used for the dynamic entries, or the symbol table, or the | |
3010 | version strings. */ | |
3011 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3012 | if (s != NULL) | |
3013 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3014 | break; | |
3015 | ||
7f1204bb JJ |
3016 | case SHT_GNU_LIBLIST: |
3017 | /* sh_link is the section header index of the prelink library | |
08a40648 AM |
3018 | list used for the dynamic entries, or the symbol table, or |
3019 | the version strings. */ | |
7f1204bb JJ |
3020 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) |
3021 | ? ".dynstr" : ".gnu.libstr"); | |
3022 | if (s != NULL) | |
3023 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3024 | break; | |
3025 | ||
252b5132 | 3026 | case SHT_HASH: |
fdc90cb4 | 3027 | case SHT_GNU_HASH: |
252b5132 RH |
3028 | case SHT_GNU_versym: |
3029 | /* sh_link is the section header index of the symbol table | |
3030 | this hash table or version table is for. */ | |
3031 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3032 | if (s != NULL) | |
3033 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3034 | break; | |
dbb410c3 AM |
3035 | |
3036 | case SHT_GROUP: | |
3037 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3038 | } |
3039 | } | |
3040 | ||
2b0f7ef9 | 3041 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3042 | if (i_shdrp[secn] == NULL) |
3043 | i_shdrp[secn] = i_shdrp[0]; | |
3044 | else | |
3045 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3046 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3047 | return TRUE; |
252b5132 RH |
3048 | } |
3049 | ||
3050 | /* Map symbol from it's internal number to the external number, moving | |
3051 | all local symbols to be at the head of the list. */ | |
3052 | ||
5372391b | 3053 | static bfd_boolean |
217aa764 | 3054 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3055 | { |
3056 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3057 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3058 | if (bed->elf_backend_sym_is_global) |
3059 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3060 | |
3061 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3062 | || bfd_is_und_section (bfd_get_section (sym)) | |
3063 | || bfd_is_com_section (bfd_get_section (sym))); | |
3064 | } | |
3065 | ||
5372391b AM |
3066 | /* Don't output section symbols for sections that are not going to be |
3067 | output. Also, don't output section symbols for reloc and other | |
3068 | special sections. */ | |
3069 | ||
3070 | static bfd_boolean | |
3071 | ignore_section_sym (bfd *abfd, asymbol *sym) | |
3072 | { | |
3073 | return ((sym->flags & BSF_SECTION_SYM) != 0 | |
3074 | && (sym->value != 0 | |
3075 | || (sym->section->owner != abfd | |
3076 | && (sym->section->output_section->owner != abfd | |
3077 | || sym->section->output_offset != 0)))); | |
3078 | } | |
3079 | ||
b34976b6 | 3080 | static bfd_boolean |
217aa764 | 3081 | elf_map_symbols (bfd *abfd) |
252b5132 | 3082 | { |
dc810e39 | 3083 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3084 | asymbol **syms = bfd_get_outsymbols (abfd); |
3085 | asymbol **sect_syms; | |
dc810e39 AM |
3086 | unsigned int num_locals = 0; |
3087 | unsigned int num_globals = 0; | |
3088 | unsigned int num_locals2 = 0; | |
3089 | unsigned int num_globals2 = 0; | |
252b5132 | 3090 | int max_index = 0; |
dc810e39 | 3091 | unsigned int idx; |
252b5132 RH |
3092 | asection *asect; |
3093 | asymbol **new_syms; | |
252b5132 RH |
3094 | |
3095 | #ifdef DEBUG | |
3096 | fprintf (stderr, "elf_map_symbols\n"); | |
3097 | fflush (stderr); | |
3098 | #endif | |
3099 | ||
252b5132 RH |
3100 | for (asect = abfd->sections; asect; asect = asect->next) |
3101 | { | |
3102 | if (max_index < asect->index) | |
3103 | max_index = asect->index; | |
3104 | } | |
3105 | ||
3106 | max_index++; | |
d0fb9a8d | 3107 | sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *)); |
252b5132 | 3108 | if (sect_syms == NULL) |
b34976b6 | 3109 | return FALSE; |
252b5132 | 3110 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3111 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3112 | |
079e9a2f AM |
3113 | /* Init sect_syms entries for any section symbols we have already |
3114 | decided to output. */ | |
252b5132 RH |
3115 | for (idx = 0; idx < symcount; idx++) |
3116 | { | |
dc810e39 | 3117 | asymbol *sym = syms[idx]; |
c044fabd | 3118 | |
252b5132 | 3119 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
5372391b | 3120 | && !ignore_section_sym (abfd, sym)) |
252b5132 | 3121 | { |
5372391b | 3122 | asection *sec = sym->section; |
252b5132 | 3123 | |
5372391b AM |
3124 | if (sec->owner != abfd) |
3125 | sec = sec->output_section; | |
252b5132 | 3126 | |
5372391b | 3127 | sect_syms[sec->index] = syms[idx]; |
252b5132 RH |
3128 | } |
3129 | } | |
3130 | ||
252b5132 RH |
3131 | /* Classify all of the symbols. */ |
3132 | for (idx = 0; idx < symcount; idx++) | |
3133 | { | |
5372391b AM |
3134 | if (ignore_section_sym (abfd, syms[idx])) |
3135 | continue; | |
252b5132 RH |
3136 | if (!sym_is_global (abfd, syms[idx])) |
3137 | num_locals++; | |
3138 | else | |
3139 | num_globals++; | |
3140 | } | |
079e9a2f | 3141 | |
5372391b | 3142 | /* We will be adding a section symbol for each normal BFD section. Most |
079e9a2f AM |
3143 | sections will already have a section symbol in outsymbols, but |
3144 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3145 | at least in that case. */ | |
252b5132 RH |
3146 | for (asect = abfd->sections; asect; asect = asect->next) |
3147 | { | |
079e9a2f | 3148 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3149 | { |
079e9a2f | 3150 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3151 | num_locals++; |
3152 | else | |
3153 | num_globals++; | |
252b5132 RH |
3154 | } |
3155 | } | |
3156 | ||
3157 | /* Now sort the symbols so the local symbols are first. */ | |
d0fb9a8d | 3158 | new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *)); |
dc810e39 | 3159 | |
252b5132 | 3160 | if (new_syms == NULL) |
b34976b6 | 3161 | return FALSE; |
252b5132 RH |
3162 | |
3163 | for (idx = 0; idx < symcount; idx++) | |
3164 | { | |
3165 | asymbol *sym = syms[idx]; | |
dc810e39 | 3166 | unsigned int i; |
252b5132 | 3167 | |
5372391b AM |
3168 | if (ignore_section_sym (abfd, sym)) |
3169 | continue; | |
252b5132 RH |
3170 | if (!sym_is_global (abfd, sym)) |
3171 | i = num_locals2++; | |
3172 | else | |
3173 | i = num_locals + num_globals2++; | |
3174 | new_syms[i] = sym; | |
3175 | sym->udata.i = i + 1; | |
3176 | } | |
3177 | for (asect = abfd->sections; asect; asect = asect->next) | |
3178 | { | |
079e9a2f | 3179 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3180 | { |
079e9a2f | 3181 | asymbol *sym = asect->symbol; |
dc810e39 | 3182 | unsigned int i; |
252b5132 | 3183 | |
079e9a2f | 3184 | sect_syms[asect->index] = sym; |
252b5132 RH |
3185 | if (!sym_is_global (abfd, sym)) |
3186 | i = num_locals2++; | |
3187 | else | |
3188 | i = num_locals + num_globals2++; | |
3189 | new_syms[i] = sym; | |
3190 | sym->udata.i = i + 1; | |
3191 | } | |
3192 | } | |
3193 | ||
3194 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3195 | ||
3196 | elf_num_locals (abfd) = num_locals; | |
3197 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3198 | return TRUE; |
252b5132 RH |
3199 | } |
3200 | ||
3201 | /* Align to the maximum file alignment that could be required for any | |
3202 | ELF data structure. */ | |
3203 | ||
268b6b39 | 3204 | static inline file_ptr |
217aa764 | 3205 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3206 | { |
3207 | return (off + align - 1) & ~(align - 1); | |
3208 | } | |
3209 | ||
3210 | /* Assign a file position to a section, optionally aligning to the | |
3211 | required section alignment. */ | |
3212 | ||
217aa764 AM |
3213 | file_ptr |
3214 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3215 | file_ptr offset, | |
3216 | bfd_boolean align) | |
252b5132 RH |
3217 | { |
3218 | if (align) | |
3219 | { | |
3220 | unsigned int al; | |
3221 | ||
3222 | al = i_shdrp->sh_addralign; | |
3223 | if (al > 1) | |
3224 | offset = BFD_ALIGN (offset, al); | |
3225 | } | |
3226 | i_shdrp->sh_offset = offset; | |
3227 | if (i_shdrp->bfd_section != NULL) | |
3228 | i_shdrp->bfd_section->filepos = offset; | |
3229 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3230 | offset += i_shdrp->sh_size; | |
3231 | return offset; | |
3232 | } | |
3233 | ||
3234 | /* Compute the file positions we are going to put the sections at, and | |
3235 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3236 | is not NULL, this is being called by the ELF backend linker. */ | |
3237 | ||
b34976b6 | 3238 | bfd_boolean |
217aa764 AM |
3239 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3240 | struct bfd_link_info *link_info) | |
252b5132 | 3241 | { |
9c5bfbb7 | 3242 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3243 | bfd_boolean failed; |
4b6c0f2f | 3244 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3245 | Elf_Internal_Shdr *shstrtab_hdr; |
3246 | ||
3247 | if (abfd->output_has_begun) | |
b34976b6 | 3248 | return TRUE; |
252b5132 RH |
3249 | |
3250 | /* Do any elf backend specific processing first. */ | |
3251 | if (bed->elf_backend_begin_write_processing) | |
3252 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3253 | ||
3254 | if (! prep_headers (abfd)) | |
b34976b6 | 3255 | return FALSE; |
252b5132 | 3256 | |
e6c51ed4 NC |
3257 | /* Post process the headers if necessary. */ |
3258 | if (bed->elf_backend_post_process_headers) | |
3259 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3260 | ||
b34976b6 | 3261 | failed = FALSE; |
252b5132 RH |
3262 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3263 | if (failed) | |
b34976b6 | 3264 | return FALSE; |
252b5132 | 3265 | |
da9f89d4 | 3266 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3267 | return FALSE; |
252b5132 RH |
3268 | |
3269 | /* The backend linker builds symbol table information itself. */ | |
3270 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3271 | { | |
3272 | /* Non-zero if doing a relocatable link. */ | |
3273 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3274 | ||
3275 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3276 | return FALSE; |
252b5132 RH |
3277 | } |
3278 | ||
1126897b | 3279 | if (link_info == NULL) |
dbb410c3 | 3280 | { |
1126897b | 3281 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3282 | if (failed) |
b34976b6 | 3283 | return FALSE; |
dbb410c3 AM |
3284 | } |
3285 | ||
252b5132 RH |
3286 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3287 | /* sh_name was set in prep_headers. */ | |
3288 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3289 | shstrtab_hdr->sh_flags = 0; | |
3290 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3291 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3292 | shstrtab_hdr->sh_entsize = 0; |
3293 | shstrtab_hdr->sh_link = 0; | |
3294 | shstrtab_hdr->sh_info = 0; | |
3295 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3296 | shstrtab_hdr->sh_addralign = 1; | |
3297 | ||
c84fca4d | 3298 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3299 | return FALSE; |
252b5132 RH |
3300 | |
3301 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3302 | { | |
3303 | file_ptr off; | |
3304 | Elf_Internal_Shdr *hdr; | |
3305 | ||
3306 | off = elf_tdata (abfd)->next_file_pos; | |
3307 | ||
3308 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3309 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3310 | |
9ad5cbcf AM |
3311 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3312 | if (hdr->sh_size != 0) | |
b34976b6 | 3313 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3314 | |
252b5132 | 3315 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3316 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3317 | |
3318 | elf_tdata (abfd)->next_file_pos = off; | |
3319 | ||
3320 | /* Now that we know where the .strtab section goes, write it | |
08a40648 | 3321 | out. */ |
252b5132 RH |
3322 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
3323 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3324 | return FALSE; |
252b5132 RH |
3325 | _bfd_stringtab_free (strtab); |
3326 | } | |
3327 | ||
b34976b6 | 3328 | abfd->output_has_begun = TRUE; |
252b5132 | 3329 | |
b34976b6 | 3330 | return TRUE; |
252b5132 RH |
3331 | } |
3332 | ||
8ded5a0f AM |
3333 | /* Make an initial estimate of the size of the program header. If we |
3334 | get the number wrong here, we'll redo section placement. */ | |
3335 | ||
3336 | static bfd_size_type | |
3337 | get_program_header_size (bfd *abfd, struct bfd_link_info *info) | |
3338 | { | |
3339 | size_t segs; | |
3340 | asection *s; | |
2b05f1b7 | 3341 | const struct elf_backend_data *bed; |
8ded5a0f AM |
3342 | |
3343 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
3344 | and one for data. */ | |
3345 | segs = 2; | |
3346 | ||
3347 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3348 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3349 | { | |
3350 | /* If we have a loadable interpreter section, we need a | |
3351 | PT_INTERP segment. In this case, assume we also need a | |
3352 | PT_PHDR segment, although that may not be true for all | |
3353 | targets. */ | |
3354 | segs += 2; | |
3355 | } | |
3356 | ||
3357 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
3358 | { | |
3359 | /* We need a PT_DYNAMIC segment. */ | |
3360 | ++segs; | |
f210dcff | 3361 | } |
08a40648 | 3362 | |
f210dcff L |
3363 | if (info->relro) |
3364 | { | |
3365 | /* We need a PT_GNU_RELRO segment. */ | |
3366 | ++segs; | |
8ded5a0f AM |
3367 | } |
3368 | ||
3369 | if (elf_tdata (abfd)->eh_frame_hdr) | |
3370 | { | |
3371 | /* We need a PT_GNU_EH_FRAME segment. */ | |
3372 | ++segs; | |
3373 | } | |
3374 | ||
2b05f1b7 | 3375 | if (elf_tdata (abfd)->stack_flags) |
8ded5a0f | 3376 | { |
2b05f1b7 L |
3377 | /* We need a PT_GNU_STACK segment. */ |
3378 | ++segs; | |
3379 | } | |
94b11780 | 3380 | |
2b05f1b7 L |
3381 | for (s = abfd->sections; s != NULL; s = s->next) |
3382 | { | |
8ded5a0f | 3383 | if ((s->flags & SEC_LOAD) != 0 |
0112cd26 | 3384 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f AM |
3385 | { |
3386 | /* We need a PT_NOTE segment. */ | |
3387 | ++segs; | |
1c5265b5 JJ |
3388 | /* Try to create just one PT_NOTE segment |
3389 | for all adjacent loadable .note* sections. | |
3390 | gABI requires that within a PT_NOTE segment | |
3391 | (and also inside of each SHT_NOTE section) | |
3392 | each note is padded to a multiple of 4 size, | |
3393 | so we check whether the sections are correctly | |
3394 | aligned. */ | |
3395 | if (s->alignment_power == 2) | |
3396 | while (s->next != NULL | |
3397 | && s->next->alignment_power == 2 | |
3398 | && (s->next->flags & SEC_LOAD) != 0 | |
3399 | && CONST_STRNEQ (s->next->name, ".note")) | |
3400 | s = s->next; | |
8ded5a0f AM |
3401 | } |
3402 | } | |
3403 | ||
3404 | for (s = abfd->sections; s != NULL; s = s->next) | |
3405 | { | |
3406 | if (s->flags & SEC_THREAD_LOCAL) | |
3407 | { | |
3408 | /* We need a PT_TLS segment. */ | |
3409 | ++segs; | |
3410 | break; | |
3411 | } | |
3412 | } | |
3413 | ||
3414 | /* Let the backend count up any program headers it might need. */ | |
2b05f1b7 | 3415 | bed = get_elf_backend_data (abfd); |
8ded5a0f AM |
3416 | if (bed->elf_backend_additional_program_headers) |
3417 | { | |
3418 | int a; | |
3419 | ||
3420 | a = (*bed->elf_backend_additional_program_headers) (abfd, info); | |
3421 | if (a == -1) | |
3422 | abort (); | |
3423 | segs += a; | |
3424 | } | |
3425 | ||
3426 | return segs * bed->s->sizeof_phdr; | |
3427 | } | |
3428 | ||
252b5132 RH |
3429 | /* Create a mapping from a set of sections to a program segment. */ |
3430 | ||
217aa764 AM |
3431 | static struct elf_segment_map * |
3432 | make_mapping (bfd *abfd, | |
3433 | asection **sections, | |
3434 | unsigned int from, | |
3435 | unsigned int to, | |
3436 | bfd_boolean phdr) | |
252b5132 RH |
3437 | { |
3438 | struct elf_segment_map *m; | |
3439 | unsigned int i; | |
3440 | asection **hdrpp; | |
dc810e39 | 3441 | bfd_size_type amt; |
252b5132 | 3442 | |
dc810e39 AM |
3443 | amt = sizeof (struct elf_segment_map); |
3444 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3445 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3446 | if (m == NULL) |
3447 | return NULL; | |
3448 | m->next = NULL; | |
3449 | m->p_type = PT_LOAD; | |
3450 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3451 | m->sections[i - from] = *hdrpp; | |
3452 | m->count = to - from; | |
3453 | ||
3454 | if (from == 0 && phdr) | |
3455 | { | |
3456 | /* Include the headers in the first PT_LOAD segment. */ | |
3457 | m->includes_filehdr = 1; | |
3458 | m->includes_phdrs = 1; | |
3459 | } | |
3460 | ||
3461 | return m; | |
3462 | } | |
3463 | ||
229fcec5 MM |
3464 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3465 | on failure. */ | |
3466 | ||
3467 | struct elf_segment_map * | |
3468 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3469 | { | |
3470 | struct elf_segment_map *m; | |
3471 | ||
3472 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3473 | if (m == NULL) | |
3474 | return NULL; | |
3475 | m->next = NULL; | |
3476 | m->p_type = PT_DYNAMIC; | |
3477 | m->count = 1; | |
3478 | m->sections[0] = dynsec; | |
08a40648 | 3479 | |
229fcec5 MM |
3480 | return m; |
3481 | } | |
3482 | ||
8ded5a0f | 3483 | /* Possibly add or remove segments from the segment map. */ |
252b5132 | 3484 | |
b34976b6 | 3485 | static bfd_boolean |
3dea8fca AM |
3486 | elf_modify_segment_map (bfd *abfd, |
3487 | struct bfd_link_info *info, | |
3488 | bfd_boolean remove_empty_load) | |
252b5132 | 3489 | { |
252e386e | 3490 | struct elf_segment_map **m; |
8ded5a0f | 3491 | const struct elf_backend_data *bed; |
252b5132 | 3492 | |
8ded5a0f AM |
3493 | /* The placement algorithm assumes that non allocated sections are |
3494 | not in PT_LOAD segments. We ensure this here by removing such | |
3495 | sections from the segment map. We also remove excluded | |
252e386e AM |
3496 | sections. Finally, any PT_LOAD segment without sections is |
3497 | removed. */ | |
3498 | m = &elf_tdata (abfd)->segment_map; | |
3499 | while (*m) | |
8ded5a0f AM |
3500 | { |
3501 | unsigned int i, new_count; | |
252b5132 | 3502 | |
252e386e | 3503 | for (new_count = 0, i = 0; i < (*m)->count; i++) |
8ded5a0f | 3504 | { |
252e386e AM |
3505 | if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0 |
3506 | && (((*m)->sections[i]->flags & SEC_ALLOC) != 0 | |
3507 | || (*m)->p_type != PT_LOAD)) | |
8ded5a0f | 3508 | { |
252e386e AM |
3509 | (*m)->sections[new_count] = (*m)->sections[i]; |
3510 | new_count++; | |
8ded5a0f AM |
3511 | } |
3512 | } | |
252e386e | 3513 | (*m)->count = new_count; |
252b5132 | 3514 | |
3dea8fca | 3515 | if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0) |
252e386e AM |
3516 | *m = (*m)->next; |
3517 | else | |
3518 | m = &(*m)->next; | |
8ded5a0f | 3519 | } |
252b5132 | 3520 | |
8ded5a0f AM |
3521 | bed = get_elf_backend_data (abfd); |
3522 | if (bed->elf_backend_modify_segment_map != NULL) | |
252b5132 | 3523 | { |
252e386e | 3524 | if (!(*bed->elf_backend_modify_segment_map) (abfd, info)) |
8ded5a0f | 3525 | return FALSE; |
252b5132 | 3526 | } |
252b5132 | 3527 | |
8ded5a0f AM |
3528 | return TRUE; |
3529 | } | |
252b5132 | 3530 | |
8ded5a0f | 3531 | /* Set up a mapping from BFD sections to program segments. */ |
252b5132 | 3532 | |
8ded5a0f AM |
3533 | bfd_boolean |
3534 | _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) | |
3535 | { | |
3536 | unsigned int count; | |
3537 | struct elf_segment_map *m; | |
3538 | asection **sections = NULL; | |
3539 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3dea8fca | 3540 | bfd_boolean no_user_phdrs; |
252b5132 | 3541 | |
3dea8fca AM |
3542 | no_user_phdrs = elf_tdata (abfd)->segment_map == NULL; |
3543 | if (no_user_phdrs && bfd_count_sections (abfd) != 0) | |
252b5132 | 3544 | { |
8ded5a0f AM |
3545 | asection *s; |
3546 | unsigned int i; | |
3547 | struct elf_segment_map *mfirst; | |
3548 | struct elf_segment_map **pm; | |
3549 | asection *last_hdr; | |
3550 | bfd_vma last_size; | |
3551 | unsigned int phdr_index; | |
3552 | bfd_vma maxpagesize; | |
3553 | asection **hdrpp; | |
3554 | bfd_boolean phdr_in_segment = TRUE; | |
3555 | bfd_boolean writable; | |
3556 | int tls_count = 0; | |
3557 | asection *first_tls = NULL; | |
3558 | asection *dynsec, *eh_frame_hdr; | |
3559 | bfd_size_type amt; | |
252b5132 | 3560 | |
8ded5a0f | 3561 | /* Select the allocated sections, and sort them. */ |
252b5132 | 3562 | |
8ded5a0f AM |
3563 | sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *)); |
3564 | if (sections == NULL) | |
252b5132 | 3565 | goto error_return; |
252b5132 | 3566 | |
8ded5a0f AM |
3567 | i = 0; |
3568 | for (s = abfd->sections; s != NULL; s = s->next) | |
3569 | { | |
3570 | if ((s->flags & SEC_ALLOC) != 0) | |
3571 | { | |
3572 | sections[i] = s; | |
3573 | ++i; | |
3574 | } | |
3575 | } | |
3576 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3577 | count = i; | |
252b5132 | 3578 | |
8ded5a0f | 3579 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
252b5132 | 3580 | |
8ded5a0f | 3581 | /* Build the mapping. */ |
252b5132 | 3582 | |
8ded5a0f AM |
3583 | mfirst = NULL; |
3584 | pm = &mfirst; | |
252b5132 | 3585 | |
8ded5a0f AM |
3586 | /* If we have a .interp section, then create a PT_PHDR segment for |
3587 | the program headers and a PT_INTERP segment for the .interp | |
3588 | section. */ | |
3589 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3590 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3591 | { | |
3592 | amt = sizeof (struct elf_segment_map); | |
3593 | m = bfd_zalloc (abfd, amt); | |
3594 | if (m == NULL) | |
3595 | goto error_return; | |
3596 | m->next = NULL; | |
3597 | m->p_type = PT_PHDR; | |
3598 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3599 | m->p_flags = PF_R | PF_X; | |
3600 | m->p_flags_valid = 1; | |
3601 | m->includes_phdrs = 1; | |
252b5132 | 3602 | |
8ded5a0f AM |
3603 | *pm = m; |
3604 | pm = &m->next; | |
252b5132 | 3605 | |
8ded5a0f AM |
3606 | amt = sizeof (struct elf_segment_map); |
3607 | m = bfd_zalloc (abfd, amt); | |
3608 | if (m == NULL) | |
3609 | goto error_return; | |
3610 | m->next = NULL; | |
3611 | m->p_type = PT_INTERP; | |
3612 | m->count = 1; | |
3613 | m->sections[0] = s; | |
3614 | ||
3615 | *pm = m; | |
3616 | pm = &m->next; | |
252b5132 | 3617 | } |
8ded5a0f AM |
3618 | |
3619 | /* Look through the sections. We put sections in the same program | |
3620 | segment when the start of the second section can be placed within | |
3621 | a few bytes of the end of the first section. */ | |
3622 | last_hdr = NULL; | |
3623 | last_size = 0; | |
3624 | phdr_index = 0; | |
3625 | maxpagesize = bed->maxpagesize; | |
3626 | writable = FALSE; | |
3627 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
3628 | if (dynsec != NULL | |
3629 | && (dynsec->flags & SEC_LOAD) == 0) | |
3630 | dynsec = NULL; | |
3631 | ||
3632 | /* Deal with -Ttext or something similar such that the first section | |
3633 | is not adjacent to the program headers. This is an | |
3634 | approximation, since at this point we don't know exactly how many | |
3635 | program headers we will need. */ | |
3636 | if (count > 0) | |
252b5132 | 3637 | { |
8ded5a0f AM |
3638 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
3639 | ||
62d7a5f6 | 3640 | if (phdr_size == (bfd_size_type) -1) |
8ded5a0f AM |
3641 | phdr_size = get_program_header_size (abfd, info); |
3642 | if ((abfd->flags & D_PAGED) == 0 | |
3643 | || sections[0]->lma < phdr_size | |
3644 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
3645 | phdr_in_segment = FALSE; | |
252b5132 RH |
3646 | } |
3647 | ||
8ded5a0f | 3648 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
252b5132 | 3649 | { |
8ded5a0f AM |
3650 | asection *hdr; |
3651 | bfd_boolean new_segment; | |
3652 | ||
3653 | hdr = *hdrpp; | |
3654 | ||
3655 | /* See if this section and the last one will fit in the same | |
3656 | segment. */ | |
3657 | ||
3658 | if (last_hdr == NULL) | |
3659 | { | |
3660 | /* If we don't have a segment yet, then we don't need a new | |
3661 | one (we build the last one after this loop). */ | |
3662 | new_segment = FALSE; | |
3663 | } | |
3664 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3665 | { | |
3666 | /* If this section has a different relation between the | |
3667 | virtual address and the load address, then we need a new | |
3668 | segment. */ | |
3669 | new_segment = TRUE; | |
3670 | } | |
3671 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) | |
3672 | < BFD_ALIGN (hdr->lma, maxpagesize)) | |
3673 | { | |
3674 | /* If putting this section in this segment would force us to | |
3675 | skip a page in the segment, then we need a new segment. */ | |
3676 | new_segment = TRUE; | |
3677 | } | |
3678 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 | |
3679 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
3680 | { | |
3681 | /* We don't want to put a loadable section after a | |
3682 | nonloadable section in the same segment. | |
3683 | Consider .tbss sections as loadable for this purpose. */ | |
3684 | new_segment = TRUE; | |
3685 | } | |
3686 | else if ((abfd->flags & D_PAGED) == 0) | |
3687 | { | |
3688 | /* If the file is not demand paged, which means that we | |
3689 | don't require the sections to be correctly aligned in the | |
3690 | file, then there is no other reason for a new segment. */ | |
3691 | new_segment = FALSE; | |
3692 | } | |
3693 | else if (! writable | |
3694 | && (hdr->flags & SEC_READONLY) == 0 | |
3695 | && (((last_hdr->lma + last_size - 1) | |
3696 | & ~(maxpagesize - 1)) | |
3697 | != (hdr->lma & ~(maxpagesize - 1)))) | |
3698 | { | |
3699 | /* We don't want to put a writable section in a read only | |
3700 | segment, unless they are on the same page in memory | |
3701 | anyhow. We already know that the last section does not | |
3702 | bring us past the current section on the page, so the | |
3703 | only case in which the new section is not on the same | |
3704 | page as the previous section is when the previous section | |
3705 | ends precisely on a page boundary. */ | |
3706 | new_segment = TRUE; | |
3707 | } | |
3708 | else | |
3709 | { | |
3710 | /* Otherwise, we can use the same segment. */ | |
3711 | new_segment = FALSE; | |
3712 | } | |
3713 | ||
2889e75b NC |
3714 | /* Allow interested parties a chance to override our decision. */ |
3715 | if (last_hdr && info->callbacks->override_segment_assignment) | |
3716 | new_segment = info->callbacks->override_segment_assignment (info, abfd, hdr, last_hdr, new_segment); | |
3717 | ||
8ded5a0f AM |
3718 | if (! new_segment) |
3719 | { | |
3720 | if ((hdr->flags & SEC_READONLY) == 0) | |
3721 | writable = TRUE; | |
3722 | last_hdr = hdr; | |
3723 | /* .tbss sections effectively have zero size. */ | |
3724 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) | |
3725 | != SEC_THREAD_LOCAL) | |
3726 | last_size = hdr->size; | |
3727 | else | |
3728 | last_size = 0; | |
3729 | continue; | |
3730 | } | |
3731 | ||
3732 | /* We need a new program segment. We must create a new program | |
3733 | header holding all the sections from phdr_index until hdr. */ | |
3734 | ||
3735 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3736 | if (m == NULL) | |
3737 | goto error_return; | |
3738 | ||
3739 | *pm = m; | |
3740 | pm = &m->next; | |
3741 | ||
252b5132 | 3742 | if ((hdr->flags & SEC_READONLY) == 0) |
b34976b6 | 3743 | writable = TRUE; |
8ded5a0f AM |
3744 | else |
3745 | writable = FALSE; | |
3746 | ||
baaff79e JJ |
3747 | last_hdr = hdr; |
3748 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3749 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3750 | last_size = hdr->size; |
baaff79e JJ |
3751 | else |
3752 | last_size = 0; | |
8ded5a0f AM |
3753 | phdr_index = i; |
3754 | phdr_in_segment = FALSE; | |
252b5132 RH |
3755 | } |
3756 | ||
8ded5a0f AM |
3757 | /* Create a final PT_LOAD program segment. */ |
3758 | if (last_hdr != NULL) | |
3759 | { | |
3760 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3761 | if (m == NULL) | |
3762 | goto error_return; | |
252b5132 | 3763 | |
8ded5a0f AM |
3764 | *pm = m; |
3765 | pm = &m->next; | |
3766 | } | |
252b5132 | 3767 | |
8ded5a0f AM |
3768 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
3769 | if (dynsec != NULL) | |
3770 | { | |
3771 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
3772 | if (m == NULL) | |
3773 | goto error_return; | |
3774 | *pm = m; | |
3775 | pm = &m->next; | |
3776 | } | |
252b5132 | 3777 | |
1c5265b5 JJ |
3778 | /* For each batch of consecutive loadable .note sections, |
3779 | add a PT_NOTE segment. We don't use bfd_get_section_by_name, | |
3780 | because if we link together nonloadable .note sections and | |
3781 | loadable .note sections, we will generate two .note sections | |
3782 | in the output file. FIXME: Using names for section types is | |
3783 | bogus anyhow. */ | |
8ded5a0f AM |
3784 | for (s = abfd->sections; s != NULL; s = s->next) |
3785 | { | |
3786 | if ((s->flags & SEC_LOAD) != 0 | |
0112cd26 | 3787 | && CONST_STRNEQ (s->name, ".note")) |
8ded5a0f | 3788 | { |
1c5265b5 JJ |
3789 | asection *s2; |
3790 | unsigned count = 1; | |
8ded5a0f | 3791 | amt = sizeof (struct elf_segment_map); |
1c5265b5 JJ |
3792 | if (s->alignment_power == 2) |
3793 | for (s2 = s; s2->next != NULL; s2 = s2->next) | |
55b581a6 JJ |
3794 | { |
3795 | if (s2->next->alignment_power == 2 | |
3796 | && (s2->next->flags & SEC_LOAD) != 0 | |
3797 | && CONST_STRNEQ (s2->next->name, ".note") | |
3798 | && align_power (s2->vma + s2->size, 2) | |
3799 | == s2->next->vma) | |
3800 | count++; | |
3801 | else | |
3802 | break; | |
3803 | } | |
1c5265b5 | 3804 | amt += (count - 1) * sizeof (asection *); |
8ded5a0f AM |
3805 | m = bfd_zalloc (abfd, amt); |
3806 | if (m == NULL) | |
3807 | goto error_return; | |
3808 | m->next = NULL; | |
3809 | m->p_type = PT_NOTE; | |
1c5265b5 JJ |
3810 | m->count = count; |
3811 | while (count > 1) | |
3812 | { | |
3813 | m->sections[m->count - count--] = s; | |
3814 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
3815 | s = s->next; | |
3816 | } | |
3817 | m->sections[m->count - 1] = s; | |
3818 | BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0); | |
8ded5a0f AM |
3819 | *pm = m; |
3820 | pm = &m->next; | |
3821 | } | |
3822 | if (s->flags & SEC_THREAD_LOCAL) | |
3823 | { | |
3824 | if (! tls_count) | |
3825 | first_tls = s; | |
3826 | tls_count++; | |
3827 | } | |
3828 | } | |
252b5132 | 3829 | |
8ded5a0f AM |
3830 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ |
3831 | if (tls_count > 0) | |
3832 | { | |
3833 | int i; | |
252b5132 | 3834 | |
8ded5a0f AM |
3835 | amt = sizeof (struct elf_segment_map); |
3836 | amt += (tls_count - 1) * sizeof (asection *); | |
3837 | m = bfd_zalloc (abfd, amt); | |
3838 | if (m == NULL) | |
3839 | goto error_return; | |
3840 | m->next = NULL; | |
3841 | m->p_type = PT_TLS; | |
3842 | m->count = tls_count; | |
3843 | /* Mandated PF_R. */ | |
3844 | m->p_flags = PF_R; | |
3845 | m->p_flags_valid = 1; | |
3846 | for (i = 0; i < tls_count; ++i) | |
3847 | { | |
3848 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3849 | m->sections[i] = first_tls; | |
3850 | first_tls = first_tls->next; | |
3851 | } | |
252b5132 | 3852 | |
8ded5a0f AM |
3853 | *pm = m; |
3854 | pm = &m->next; | |
3855 | } | |
252b5132 | 3856 | |
8ded5a0f AM |
3857 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3858 | segment. */ | |
3859 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; | |
3860 | if (eh_frame_hdr != NULL | |
3861 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
252b5132 | 3862 | { |
dc810e39 | 3863 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3864 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3865 | if (m == NULL) |
3866 | goto error_return; | |
3867 | m->next = NULL; | |
8ded5a0f | 3868 | m->p_type = PT_GNU_EH_FRAME; |
252b5132 | 3869 | m->count = 1; |
8ded5a0f | 3870 | m->sections[0] = eh_frame_hdr->output_section; |
252b5132 RH |
3871 | |
3872 | *pm = m; | |
3873 | pm = &m->next; | |
3874 | } | |
13ae64f3 | 3875 | |
8ded5a0f | 3876 | if (elf_tdata (abfd)->stack_flags) |
13ae64f3 | 3877 | { |
8ded5a0f AM |
3878 | amt = sizeof (struct elf_segment_map); |
3879 | m = bfd_zalloc (abfd, amt); | |
3880 | if (m == NULL) | |
3881 | goto error_return; | |
3882 | m->next = NULL; | |
2b05f1b7 | 3883 | m->p_type = PT_GNU_STACK; |
8ded5a0f AM |
3884 | m->p_flags = elf_tdata (abfd)->stack_flags; |
3885 | m->p_flags_valid = 1; | |
252b5132 | 3886 | |
8ded5a0f AM |
3887 | *pm = m; |
3888 | pm = &m->next; | |
3889 | } | |
65765700 | 3890 | |
f210dcff | 3891 | if (info->relro) |
8ded5a0f | 3892 | { |
f210dcff L |
3893 | for (m = mfirst; m != NULL; m = m->next) |
3894 | { | |
3895 | if (m->p_type == PT_LOAD) | |
3896 | { | |
3897 | asection *last = m->sections[m->count - 1]; | |
3898 | bfd_vma vaddr = m->sections[0]->vma; | |
3899 | bfd_vma filesz = last->vma - vaddr + last->size; | |
65765700 | 3900 | |
f210dcff L |
3901 | if (vaddr < info->relro_end |
3902 | && vaddr >= info->relro_start | |
3903 | && (vaddr + filesz) >= info->relro_end) | |
3904 | break; | |
3905 | } | |
3906 | } | |
3907 | ||
3908 | /* Make a PT_GNU_RELRO segment only when it isn't empty. */ | |
3909 | if (m != NULL) | |
3910 | { | |
3911 | amt = sizeof (struct elf_segment_map); | |
3912 | m = bfd_zalloc (abfd, amt); | |
3913 | if (m == NULL) | |
3914 | goto error_return; | |
3915 | m->next = NULL; | |
3916 | m->p_type = PT_GNU_RELRO; | |
3917 | m->p_flags = PF_R; | |
3918 | m->p_flags_valid = 1; | |
3919 | ||
3920 | *pm = m; | |
3921 | pm = &m->next; | |
3922 | } | |
8ded5a0f | 3923 | } |
9ee5e499 | 3924 | |
8ded5a0f AM |
3925 | free (sections); |
3926 | elf_tdata (abfd)->segment_map = mfirst; | |
9ee5e499 JJ |
3927 | } |
3928 | ||
3dea8fca | 3929 | if (!elf_modify_segment_map (abfd, info, no_user_phdrs)) |
8ded5a0f | 3930 | return FALSE; |
8c37241b | 3931 | |
8ded5a0f AM |
3932 | for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
3933 | ++count; | |
3934 | elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr; | |
252b5132 | 3935 | |
b34976b6 | 3936 | return TRUE; |
252b5132 RH |
3937 | |
3938 | error_return: | |
3939 | if (sections != NULL) | |
3940 | free (sections); | |
b34976b6 | 3941 | return FALSE; |
252b5132 RH |
3942 | } |
3943 | ||
3944 | /* Sort sections by address. */ | |
3945 | ||
3946 | static int | |
217aa764 | 3947 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3948 | { |
3949 | const asection *sec1 = *(const asection **) arg1; | |
3950 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3951 | bfd_size_type size1, size2; |
252b5132 RH |
3952 | |
3953 | /* Sort by LMA first, since this is the address used to | |
3954 | place the section into a segment. */ | |
3955 | if (sec1->lma < sec2->lma) | |
3956 | return -1; | |
3957 | else if (sec1->lma > sec2->lma) | |
3958 | return 1; | |
3959 | ||
3960 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3961 | the same, and this will do nothing. */ | |
3962 | if (sec1->vma < sec2->vma) | |
3963 | return -1; | |
3964 | else if (sec1->vma > sec2->vma) | |
3965 | return 1; | |
3966 | ||
3967 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3968 | ||
07c6e936 | 3969 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3970 | |
3971 | if (TOEND (sec1)) | |
3972 | { | |
3973 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3974 | { |
3975 | /* If the indicies are the same, do not return 0 | |
3976 | here, but continue to try the next comparison. */ | |
3977 | if (sec1->target_index - sec2->target_index != 0) | |
3978 | return sec1->target_index - sec2->target_index; | |
3979 | } | |
252b5132 RH |
3980 | else |
3981 | return 1; | |
3982 | } | |
00a7cdc5 | 3983 | else if (TOEND (sec2)) |
252b5132 RH |
3984 | return -1; |
3985 | ||
3986 | #undef TOEND | |
3987 | ||
00a7cdc5 NC |
3988 | /* Sort by size, to put zero sized sections |
3989 | before others at the same address. */ | |
252b5132 | 3990 | |
eea6121a AM |
3991 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3992 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3993 | |
3994 | if (size1 < size2) | |
252b5132 | 3995 | return -1; |
eecdbe52 | 3996 | if (size1 > size2) |
252b5132 RH |
3997 | return 1; |
3998 | ||
3999 | return sec1->target_index - sec2->target_index; | |
4000 | } | |
4001 | ||
340b6d91 AC |
4002 | /* Ian Lance Taylor writes: |
4003 | ||
4004 | We shouldn't be using % with a negative signed number. That's just | |
4005 | not good. We have to make sure either that the number is not | |
4006 | negative, or that the number has an unsigned type. When the types | |
4007 | are all the same size they wind up as unsigned. When file_ptr is a | |
4008 | larger signed type, the arithmetic winds up as signed long long, | |
4009 | which is wrong. | |
4010 | ||
4011 | What we're trying to say here is something like ``increase OFF by | |
4012 | the least amount that will cause it to be equal to the VMA modulo | |
4013 | the page size.'' */ | |
4014 | /* In other words, something like: | |
4015 | ||
4016 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
4017 | off_offset = off % bed->maxpagesize; | |
4018 | if (vma_offset < off_offset) | |
4019 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
4020 | else | |
4021 | adjustment = vma_offset - off_offset; | |
08a40648 | 4022 | |
340b6d91 AC |
4023 | which can can be collapsed into the expression below. */ |
4024 | ||
4025 | static file_ptr | |
4026 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
4027 | { | |
4028 | return ((vma - off) % maxpagesize); | |
4029 | } | |
4030 | ||
6d33f217 L |
4031 | static void |
4032 | print_segment_map (const struct elf_segment_map *m) | |
4033 | { | |
4034 | unsigned int j; | |
4035 | const char *pt = get_segment_type (m->p_type); | |
4036 | char buf[32]; | |
4037 | ||
4038 | if (pt == NULL) | |
4039 | { | |
4040 | if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC) | |
4041 | sprintf (buf, "LOPROC+%7.7x", | |
4042 | (unsigned int) (m->p_type - PT_LOPROC)); | |
4043 | else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS) | |
4044 | sprintf (buf, "LOOS+%7.7x", | |
4045 | (unsigned int) (m->p_type - PT_LOOS)); | |
4046 | else | |
4047 | snprintf (buf, sizeof (buf), "%8.8x", | |
4048 | (unsigned int) m->p_type); | |
4049 | pt = buf; | |
4050 | } | |
4051 | fprintf (stderr, "%s:", pt); | |
4052 | for (j = 0; j < m->count; j++) | |
4053 | fprintf (stderr, " %s", m->sections [j]->name); | |
4054 | putc ('\n',stderr); | |
4055 | } | |
4056 | ||
252b5132 RH |
4057 | /* Assign file positions to the sections based on the mapping from |
4058 | sections to segments. This function also sets up some fields in | |
f3520d2f | 4059 | the file header. */ |
252b5132 | 4060 | |
b34976b6 | 4061 | static bfd_boolean |
f3520d2f AM |
4062 | assign_file_positions_for_load_sections (bfd *abfd, |
4063 | struct bfd_link_info *link_info) | |
252b5132 RH |
4064 | { |
4065 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
252b5132 | 4066 | struct elf_segment_map *m; |
252b5132 | 4067 | Elf_Internal_Phdr *phdrs; |
252b5132 | 4068 | Elf_Internal_Phdr *p; |
02bf8d82 | 4069 | file_ptr off; |
3f570048 | 4070 | bfd_size_type maxpagesize; |
f3520d2f | 4071 | unsigned int alloc; |
0920dee7 | 4072 | unsigned int i, j; |
252b5132 | 4073 | |
e36284ab | 4074 | if (link_info == NULL |
3dea8fca | 4075 | && !elf_modify_segment_map (abfd, link_info, FALSE)) |
8ded5a0f | 4076 | return FALSE; |
252b5132 | 4077 | |
8ded5a0f | 4078 | alloc = 0; |
252b5132 | 4079 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
8ded5a0f | 4080 | ++alloc; |
252b5132 RH |
4081 | |
4082 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4083 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
8ded5a0f | 4084 | elf_elfheader (abfd)->e_phnum = alloc; |
252b5132 | 4085 | |
62d7a5f6 | 4086 | if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1) |
8ded5a0f AM |
4087 | elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr; |
4088 | else | |
4089 | BFD_ASSERT (elf_tdata (abfd)->program_header_size | |
59e0647f | 4090 | >= alloc * bed->s->sizeof_phdr); |
252b5132 RH |
4091 | |
4092 | if (alloc == 0) | |
f3520d2f | 4093 | { |
8ded5a0f AM |
4094 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; |
4095 | return TRUE; | |
f3520d2f | 4096 | } |
252b5132 | 4097 | |
d0fb9a8d | 4098 | phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr)); |
f3520d2f | 4099 | elf_tdata (abfd)->phdr = phdrs; |
252b5132 | 4100 | if (phdrs == NULL) |
b34976b6 | 4101 | return FALSE; |
252b5132 | 4102 | |
3f570048 AM |
4103 | maxpagesize = 1; |
4104 | if ((abfd->flags & D_PAGED) != 0) | |
4105 | maxpagesize = bed->maxpagesize; | |
4106 | ||
252b5132 RH |
4107 | off = bed->s->sizeof_ehdr; |
4108 | off += alloc * bed->s->sizeof_phdr; | |
4109 | ||
0920dee7 | 4110 | for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0; |
252b5132 | 4111 | m != NULL; |
0920dee7 | 4112 | m = m->next, p++, j++) |
252b5132 | 4113 | { |
252b5132 | 4114 | asection **secpp; |
bf988460 AM |
4115 | bfd_vma off_adjust; |
4116 | bfd_boolean no_contents; | |
252b5132 RH |
4117 | |
4118 | /* If elf_segment_map is not from map_sections_to_segments, the | |
08a40648 | 4119 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4120 | not be done to the PT_NOTE section of a corefile, which may |
4121 | contain several pseudo-sections artificially created by bfd. | |
4122 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4123 | if (m->count > 1 |
4124 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4125 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4126 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4127 | elf_sort_sections); | |
4128 | ||
b301b248 AM |
4129 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4130 | number of sections with contents contributing to both p_filesz | |
4131 | and p_memsz, followed by a number of sections with no contents | |
4132 | that just contribute to p_memsz. In this loop, OFF tracks next | |
02bf8d82 | 4133 | available file offset for PT_LOAD and PT_NOTE segments. */ |
252b5132 | 4134 | p->p_type = m->p_type; |
28a7f3e7 | 4135 | p->p_flags = m->p_flags; |
252b5132 | 4136 | |
3f570048 AM |
4137 | if (m->count == 0) |
4138 | p->p_vaddr = 0; | |
4139 | else | |
3271a814 | 4140 | p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset; |
3f570048 AM |
4141 | |
4142 | if (m->p_paddr_valid) | |
4143 | p->p_paddr = m->p_paddr; | |
4144 | else if (m->count == 0) | |
4145 | p->p_paddr = 0; | |
4146 | else | |
08a40648 | 4147 | p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset; |
3f570048 AM |
4148 | |
4149 | if (p->p_type == PT_LOAD | |
4150 | && (abfd->flags & D_PAGED) != 0) | |
4151 | { | |
4152 | /* p_align in demand paged PT_LOAD segments effectively stores | |
4153 | the maximum page size. When copying an executable with | |
4154 | objcopy, we set m->p_align from the input file. Use this | |
4155 | value for maxpagesize rather than bed->maxpagesize, which | |
4156 | may be different. Note that we use maxpagesize for PT_TLS | |
4157 | segment alignment later in this function, so we are relying | |
4158 | on at least one PT_LOAD segment appearing before a PT_TLS | |
4159 | segment. */ | |
4160 | if (m->p_align_valid) | |
4161 | maxpagesize = m->p_align; | |
4162 | ||
4163 | p->p_align = maxpagesize; | |
4164 | } | |
3271a814 NS |
4165 | else if (m->p_align_valid) |
4166 | p->p_align = m->p_align; | |
e970b90a DJ |
4167 | else if (m->count == 0) |
4168 | p->p_align = 1 << bed->s->log_file_align; | |
3f570048 AM |
4169 | else |
4170 | p->p_align = 0; | |
4171 | ||
bf988460 AM |
4172 | no_contents = FALSE; |
4173 | off_adjust = 0; | |
252b5132 | 4174 | if (p->p_type == PT_LOAD |
b301b248 | 4175 | && m->count > 0) |
252b5132 | 4176 | { |
b301b248 | 4177 | bfd_size_type align; |
a49e53ed | 4178 | unsigned int align_power = 0; |
b301b248 | 4179 | |
3271a814 NS |
4180 | if (m->p_align_valid) |
4181 | align = p->p_align; | |
4182 | else | |
252b5132 | 4183 | { |
3271a814 NS |
4184 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4185 | { | |
4186 | unsigned int secalign; | |
08a40648 | 4187 | |
3271a814 NS |
4188 | secalign = bfd_get_section_alignment (abfd, *secpp); |
4189 | if (secalign > align_power) | |
4190 | align_power = secalign; | |
4191 | } | |
4192 | align = (bfd_size_type) 1 << align_power; | |
4193 | if (align < maxpagesize) | |
4194 | align = maxpagesize; | |
b301b248 | 4195 | } |
252b5132 | 4196 | |
02bf8d82 AM |
4197 | for (i = 0; i < m->count; i++) |
4198 | if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
4199 | /* If we aren't making room for this section, then | |
4200 | it must be SHT_NOBITS regardless of what we've | |
4201 | set via struct bfd_elf_special_section. */ | |
4202 | elf_section_type (m->sections[i]) = SHT_NOBITS; | |
4203 | ||
bf988460 AM |
4204 | /* Find out whether this segment contains any loadable |
4205 | sections. If the first section isn't loadable, the same | |
4206 | holds for any other sections. */ | |
4207 | i = 0; | |
4208 | while (elf_section_type (m->sections[i]) == SHT_NOBITS) | |
b301b248 | 4209 | { |
bf988460 AM |
4210 | /* If a segment starts with .tbss, we need to look |
4211 | at the next section to decide whether the segment | |
4212 | has any loadable sections. */ | |
4213 | if ((elf_section_flags (m->sections[i]) & SHF_TLS) == 0 | |
4214 | || ++i >= m->count) | |
b301b248 | 4215 | { |
bf988460 AM |
4216 | no_contents = TRUE; |
4217 | break; | |
b301b248 | 4218 | } |
252b5132 | 4219 | } |
bf988460 AM |
4220 | |
4221 | off_adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); | |
4222 | off += off_adjust; | |
4223 | if (no_contents) | |
4224 | { | |
4225 | /* We shouldn't need to align the segment on disk since | |
4226 | the segment doesn't need file space, but the gABI | |
4227 | arguably requires the alignment and glibc ld.so | |
4228 | checks it. So to comply with the alignment | |
4229 | requirement but not waste file space, we adjust | |
4230 | p_offset for just this segment. (OFF_ADJUST is | |
4231 | subtracted from OFF later.) This may put p_offset | |
4232 | past the end of file, but that shouldn't matter. */ | |
4233 | } | |
4234 | else | |
4235 | off_adjust = 0; | |
252b5132 | 4236 | } |
b1a6d0b1 NC |
4237 | /* Make sure the .dynamic section is the first section in the |
4238 | PT_DYNAMIC segment. */ | |
4239 | else if (p->p_type == PT_DYNAMIC | |
4240 | && m->count > 1 | |
4241 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4242 | { | |
4243 | _bfd_error_handler | |
b301b248 AM |
4244 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4245 | abfd); | |
b1a6d0b1 NC |
4246 | bfd_set_error (bfd_error_bad_value); |
4247 | return FALSE; | |
4248 | } | |
252b5132 | 4249 | |
252b5132 RH |
4250 | p->p_offset = 0; |
4251 | p->p_filesz = 0; | |
4252 | p->p_memsz = 0; | |
4253 | ||
4254 | if (m->includes_filehdr) | |
4255 | { | |
bf988460 | 4256 | if (!m->p_flags_valid) |
252b5132 | 4257 | p->p_flags |= PF_R; |
252b5132 RH |
4258 | p->p_filesz = bed->s->sizeof_ehdr; |
4259 | p->p_memsz = bed->s->sizeof_ehdr; | |
4260 | if (m->count > 0) | |
4261 | { | |
4262 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4263 | ||
4264 | if (p->p_vaddr < (bfd_vma) off) | |
4265 | { | |
caf47ea6 | 4266 | (*_bfd_error_handler) |
b301b248 AM |
4267 | (_("%B: Not enough room for program headers, try linking with -N"), |
4268 | abfd); | |
252b5132 | 4269 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4270 | return FALSE; |
252b5132 RH |
4271 | } |
4272 | ||
4273 | p->p_vaddr -= off; | |
bf988460 | 4274 | if (!m->p_paddr_valid) |
252b5132 RH |
4275 | p->p_paddr -= off; |
4276 | } | |
252b5132 RH |
4277 | } |
4278 | ||
4279 | if (m->includes_phdrs) | |
4280 | { | |
bf988460 | 4281 | if (!m->p_flags_valid) |
252b5132 RH |
4282 | p->p_flags |= PF_R; |
4283 | ||
f3520d2f | 4284 | if (!m->includes_filehdr) |
252b5132 RH |
4285 | { |
4286 | p->p_offset = bed->s->sizeof_ehdr; | |
4287 | ||
4288 | if (m->count > 0) | |
4289 | { | |
4290 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4291 | p->p_vaddr -= off - p->p_offset; | |
bf988460 | 4292 | if (!m->p_paddr_valid) |
252b5132 RH |
4293 | p->p_paddr -= off - p->p_offset; |
4294 | } | |
252b5132 RH |
4295 | } |
4296 | ||
4297 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4298 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4299 | } | |
4300 | ||
4301 | if (p->p_type == PT_LOAD | |
4302 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4303 | { | |
bf988460 | 4304 | if (!m->includes_filehdr && !m->includes_phdrs) |
02bf8d82 | 4305 | p->p_offset = off; |
252b5132 RH |
4306 | else |
4307 | { | |
4308 | file_ptr adjust; | |
4309 | ||
4310 | adjust = off - (p->p_offset + p->p_filesz); | |
bf988460 AM |
4311 | if (!no_contents) |
4312 | p->p_filesz += adjust; | |
252b5132 RH |
4313 | p->p_memsz += adjust; |
4314 | } | |
4315 | } | |
4316 | ||
1ea63fd2 AM |
4317 | /* Set up p_filesz, p_memsz, p_align and p_flags from the section |
4318 | maps. Set filepos for sections in PT_LOAD segments, and in | |
4319 | core files, for sections in PT_NOTE segments. | |
4320 | assign_file_positions_for_non_load_sections will set filepos | |
4321 | for other sections and update p_filesz for other segments. */ | |
252b5132 RH |
4322 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4323 | { | |
4324 | asection *sec; | |
252b5132 | 4325 | bfd_size_type align; |
627b32bc | 4326 | Elf_Internal_Shdr *this_hdr; |
252b5132 RH |
4327 | |
4328 | sec = *secpp; | |
02bf8d82 | 4329 | this_hdr = &elf_section_data (sec)->this_hdr; |
3f570048 | 4330 | align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec); |
252b5132 | 4331 | |
b301b248 AM |
4332 | if (p->p_type == PT_LOAD |
4333 | || p->p_type == PT_TLS) | |
252b5132 | 4334 | { |
8c252fd9 | 4335 | bfd_signed_vma adjust = sec->lma - (p->p_paddr + p->p_memsz); |
252b5132 | 4336 | |
02bf8d82 AM |
4337 | if (this_hdr->sh_type != SHT_NOBITS |
4338 | || ((this_hdr->sh_flags & SHF_ALLOC) != 0 | |
4339 | && ((this_hdr->sh_flags & SHF_TLS) == 0 | |
0e922b77 | 4340 | || p->p_type == PT_TLS))) |
252b5132 | 4341 | { |
252b5132 | 4342 | if (adjust < 0) |
b301b248 AM |
4343 | { |
4344 | (*_bfd_error_handler) | |
4345 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4346 | abfd, sec, (unsigned long) sec->lma); | |
4347 | adjust = 0; | |
4348 | } | |
252b5132 | 4349 | p->p_memsz += adjust; |
0e922b77 | 4350 | |
02bf8d82 | 4351 | if (this_hdr->sh_type != SHT_NOBITS) |
0e922b77 AM |
4352 | { |
4353 | off += adjust; | |
4354 | p->p_filesz += adjust; | |
4355 | } | |
252b5132 | 4356 | } |
252b5132 RH |
4357 | } |
4358 | ||
4359 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4360 | { | |
b301b248 AM |
4361 | /* The section at i == 0 is the one that actually contains |
4362 | everything. */ | |
4a938328 MS |
4363 | if (i == 0) |
4364 | { | |
627b32bc | 4365 | this_hdr->sh_offset = sec->filepos = off; |
6a3cd2b4 AM |
4366 | off += this_hdr->sh_size; |
4367 | p->p_filesz = this_hdr->sh_size; | |
b301b248 AM |
4368 | p->p_memsz = 0; |
4369 | p->p_align = 1; | |
252b5132 | 4370 | } |
4a938328 | 4371 | else |
252b5132 | 4372 | { |
b301b248 | 4373 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4374 | sec->filepos = 0; |
eea6121a | 4375 | sec->size = 0; |
b301b248 AM |
4376 | sec->flags = 0; |
4377 | continue; | |
252b5132 | 4378 | } |
252b5132 RH |
4379 | } |
4380 | else | |
4381 | { | |
b301b248 AM |
4382 | if (p->p_type == PT_LOAD) |
4383 | { | |
02bf8d82 AM |
4384 | this_hdr->sh_offset = sec->filepos = off; |
4385 | if (this_hdr->sh_type != SHT_NOBITS) | |
6a3cd2b4 | 4386 | off += this_hdr->sh_size; |
b301b248 | 4387 | } |
252b5132 | 4388 | |
02bf8d82 | 4389 | if (this_hdr->sh_type != SHT_NOBITS) |
b301b248 | 4390 | { |
6a3cd2b4 | 4391 | p->p_filesz += this_hdr->sh_size; |
02bf8d82 AM |
4392 | /* A load section without SHF_ALLOC is something like |
4393 | a note section in a PT_NOTE segment. These take | |
4394 | file space but are not loaded into memory. */ | |
4395 | if ((this_hdr->sh_flags & SHF_ALLOC) != 0) | |
6a3cd2b4 | 4396 | p->p_memsz += this_hdr->sh_size; |
b301b248 | 4397 | } |
6a3cd2b4 | 4398 | else if ((this_hdr->sh_flags & SHF_ALLOC) != 0) |
13ae64f3 | 4399 | { |
6a3cd2b4 AM |
4400 | if (p->p_type == PT_TLS) |
4401 | p->p_memsz += this_hdr->sh_size; | |
4402 | ||
4403 | /* .tbss is special. It doesn't contribute to p_memsz of | |
4404 | normal segments. */ | |
4405 | else if ((this_hdr->sh_flags & SHF_TLS) == 0) | |
4406 | p->p_memsz += this_hdr->sh_size; | |
13ae64f3 JJ |
4407 | } |
4408 | ||
b10a8ae0 L |
4409 | if (align > p->p_align |
4410 | && !m->p_align_valid | |
4411 | && (p->p_type != PT_LOAD | |
4412 | || (abfd->flags & D_PAGED) == 0)) | |
252b5132 RH |
4413 | p->p_align = align; |
4414 | } | |
4415 | ||
bf988460 | 4416 | if (!m->p_flags_valid) |
252b5132 RH |
4417 | { |
4418 | p->p_flags |= PF_R; | |
02bf8d82 | 4419 | if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0) |
252b5132 | 4420 | p->p_flags |= PF_X; |
02bf8d82 | 4421 | if ((this_hdr->sh_flags & SHF_WRITE) != 0) |
252b5132 RH |
4422 | p->p_flags |= PF_W; |
4423 | } | |
4424 | } | |
bf988460 | 4425 | off -= off_adjust; |
0920dee7 | 4426 | |
7c928300 AM |
4427 | /* Check that all sections are in a PT_LOAD segment. |
4428 | Don't check funky gdb generated core files. */ | |
4429 | if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core) | |
0920dee7 L |
4430 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4431 | { | |
4432 | Elf_Internal_Shdr *this_hdr; | |
4433 | asection *sec; | |
4434 | ||
4435 | sec = *secpp; | |
4436 | this_hdr = &(elf_section_data(sec)->this_hdr); | |
4437 | if (this_hdr->sh_size != 0 | |
4438 | && !ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, p)) | |
4439 | { | |
4440 | (*_bfd_error_handler) | |
4441 | (_("%B: section `%A' can't be allocated in segment %d"), | |
4442 | abfd, sec, j); | |
6d33f217 | 4443 | print_segment_map (m); |
0920dee7 L |
4444 | bfd_set_error (bfd_error_bad_value); |
4445 | return FALSE; | |
4446 | } | |
4447 | } | |
252b5132 RH |
4448 | } |
4449 | ||
f3520d2f AM |
4450 | elf_tdata (abfd)->next_file_pos = off; |
4451 | return TRUE; | |
4452 | } | |
4453 | ||
4454 | /* Assign file positions for the other sections. */ | |
4455 | ||
4456 | static bfd_boolean | |
4457 | assign_file_positions_for_non_load_sections (bfd *abfd, | |
4458 | struct bfd_link_info *link_info) | |
4459 | { | |
4460 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
4461 | Elf_Internal_Shdr **i_shdrpp; | |
4462 | Elf_Internal_Shdr **hdrpp; | |
4463 | Elf_Internal_Phdr *phdrs; | |
4464 | Elf_Internal_Phdr *p; | |
4465 | struct elf_segment_map *m; | |
4466 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4467 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4468 | file_ptr off; | |
4469 | unsigned int num_sec; | |
4470 | unsigned int i; | |
4471 | unsigned int count; | |
4472 | ||
5c182d5f AM |
4473 | i_shdrpp = elf_elfsections (abfd); |
4474 | num_sec = elf_numsections (abfd); | |
f3520d2f | 4475 | off = elf_tdata (abfd)->next_file_pos; |
5c182d5f AM |
4476 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
4477 | { | |
4478 | struct elf_obj_tdata *tdata = elf_tdata (abfd); | |
4479 | Elf_Internal_Shdr *hdr; | |
4480 | ||
4481 | hdr = *hdrpp; | |
4482 | if (hdr->bfd_section != NULL | |
252e386e AM |
4483 | && (hdr->bfd_section->filepos != 0 |
4484 | || (hdr->sh_type == SHT_NOBITS | |
4485 | && hdr->contents == NULL))) | |
627b32bc | 4486 | BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos); |
5c182d5f AM |
4487 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) |
4488 | { | |
49c13adb L |
4489 | if (hdr->sh_size != 0) |
4490 | ((*_bfd_error_handler) | |
4491 | (_("%B: warning: allocated section `%s' not in segment"), | |
3ba71138 L |
4492 | abfd, |
4493 | (hdr->bfd_section == NULL | |
4494 | ? "*unknown*" | |
4495 | : hdr->bfd_section->name))); | |
4496 | /* We don't need to page align empty sections. */ | |
4497 | if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0) | |
5c182d5f AM |
4498 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4499 | bed->maxpagesize); | |
4500 | else | |
4501 | off += vma_page_aligned_bias (hdr->sh_addr, off, | |
4502 | hdr->sh_addralign); | |
4503 | off = _bfd_elf_assign_file_position_for_section (hdr, off, | |
4504 | FALSE); | |
4505 | } | |
4506 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
4507 | && hdr->bfd_section == NULL) | |
4508 | || hdr == i_shdrpp[tdata->symtab_section] | |
4509 | || hdr == i_shdrpp[tdata->symtab_shndx_section] | |
4510 | || hdr == i_shdrpp[tdata->strtab_section]) | |
4511 | hdr->sh_offset = -1; | |
4512 | else | |
4513 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); | |
4514 | ||
4515 | if (i == SHN_LORESERVE - 1) | |
4516 | { | |
4517 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4518 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4519 | } | |
4520 | } | |
4521 | ||
252b5132 RH |
4522 | /* Now that we have set the section file positions, we can set up |
4523 | the file positions for the non PT_LOAD segments. */ | |
f3520d2f AM |
4524 | count = 0; |
4525 | filehdr_vaddr = 0; | |
4526 | filehdr_paddr = 0; | |
4527 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4528 | phdrs_paddr = 0; | |
4529 | phdrs = elf_tdata (abfd)->phdr; | |
4530 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4531 | m != NULL; | |
4532 | m = m->next, p++) | |
4533 | { | |
4534 | ++count; | |
4535 | if (p->p_type != PT_LOAD) | |
4536 | continue; | |
4537 | ||
4538 | if (m->includes_filehdr) | |
4539 | { | |
4540 | filehdr_vaddr = p->p_vaddr; | |
4541 | filehdr_paddr = p->p_paddr; | |
4542 | } | |
4543 | if (m->includes_phdrs) | |
4544 | { | |
4545 | phdrs_vaddr = p->p_vaddr; | |
4546 | phdrs_paddr = p->p_paddr; | |
4547 | if (m->includes_filehdr) | |
4548 | { | |
4549 | phdrs_vaddr += bed->s->sizeof_ehdr; | |
4550 | phdrs_paddr += bed->s->sizeof_ehdr; | |
4551 | } | |
4552 | } | |
4553 | } | |
4554 | ||
252b5132 RH |
4555 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
4556 | m != NULL; | |
4557 | m = m->next, p++) | |
4558 | { | |
1ea63fd2 | 4559 | if (m->count != 0) |
252b5132 | 4560 | { |
1ea63fd2 | 4561 | if (p->p_type != PT_LOAD |
b10a8ae0 L |
4562 | && (p->p_type != PT_NOTE |
4563 | || bfd_get_format (abfd) != bfd_core)) | |
229fcec5 | 4564 | { |
1ea63fd2 | 4565 | Elf_Internal_Shdr *hdr; |
b10a8ae0 L |
4566 | asection *sect; |
4567 | ||
1ea63fd2 AM |
4568 | BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs); |
4569 | ||
b10a8ae0 L |
4570 | sect = m->sections[m->count - 1]; |
4571 | hdr = &elf_section_data (sect)->this_hdr; | |
4572 | p->p_filesz = sect->filepos - m->sections[0]->filepos; | |
1ea63fd2 AM |
4573 | if (hdr->sh_type != SHT_NOBITS) |
4574 | p->p_filesz += hdr->sh_size; | |
4575 | ||
b10a8ae0 L |
4576 | if (p->p_type == PT_GNU_RELRO) |
4577 | { | |
4578 | /* When we get here, we are copying executable | |
4579 | or shared library. But we need to use the same | |
4580 | linker logic. */ | |
4581 | Elf_Internal_Phdr *lp; | |
4582 | ||
4583 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4584 | { | |
4585 | if (lp->p_type == PT_LOAD | |
4586 | && lp->p_paddr == p->p_paddr) | |
4587 | break; | |
4588 | } | |
4589 | ||
4590 | if (lp < phdrs + count) | |
4591 | { | |
4592 | /* We should use p_size if it is valid since it | |
4593 | may contain the first few bytes of the next | |
4594 | SEC_ALLOC section. */ | |
4595 | if (m->p_size_valid) | |
4596 | p->p_filesz = m->p_size; | |
4597 | else | |
4598 | abort (); | |
4599 | p->p_vaddr = lp->p_vaddr; | |
4600 | p->p_offset = lp->p_offset; | |
4601 | p->p_memsz = p->p_filesz; | |
4602 | p->p_align = 1; | |
4603 | } | |
4604 | else | |
4605 | abort (); | |
4606 | } | |
4607 | else | |
4608 | p->p_offset = m->sections[0]->filepos; | |
229fcec5 | 4609 | } |
252b5132 | 4610 | } |
1ea63fd2 | 4611 | else |
252b5132 RH |
4612 | { |
4613 | if (m->includes_filehdr) | |
4614 | { | |
4615 | p->p_vaddr = filehdr_vaddr; | |
4616 | if (! m->p_paddr_valid) | |
4617 | p->p_paddr = filehdr_paddr; | |
4618 | } | |
4619 | else if (m->includes_phdrs) | |
4620 | { | |
4621 | p->p_vaddr = phdrs_vaddr; | |
4622 | if (! m->p_paddr_valid) | |
4623 | p->p_paddr = phdrs_paddr; | |
4624 | } | |
8c37241b JJ |
4625 | else if (p->p_type == PT_GNU_RELRO) |
4626 | { | |
4627 | Elf_Internal_Phdr *lp; | |
4628 | ||
4629 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4630 | { | |
4631 | if (lp->p_type == PT_LOAD | |
4632 | && lp->p_vaddr <= link_info->relro_end | |
4633 | && lp->p_vaddr >= link_info->relro_start | |
e36284ab AM |
4634 | && (lp->p_vaddr + lp->p_filesz |
4635 | >= link_info->relro_end)) | |
8c37241b JJ |
4636 | break; |
4637 | } | |
4638 | ||
4639 | if (lp < phdrs + count | |
4640 | && link_info->relro_end > lp->p_vaddr) | |
4641 | { | |
4642 | p->p_vaddr = lp->p_vaddr; | |
4643 | p->p_paddr = lp->p_paddr; | |
4644 | p->p_offset = lp->p_offset; | |
4645 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4646 | p->p_memsz = p->p_filesz; | |
4647 | p->p_align = 1; | |
4648 | p->p_flags = (lp->p_flags & ~PF_W); | |
4649 | } | |
4650 | else | |
4651 | { | |
4652 | memset (p, 0, sizeof *p); | |
4653 | p->p_type = PT_NULL; | |
4654 | } | |
4655 | } | |
252b5132 RH |
4656 | } |
4657 | } | |
4658 | ||
252b5132 RH |
4659 | elf_tdata (abfd)->next_file_pos = off; |
4660 | ||
b34976b6 | 4661 | return TRUE; |
252b5132 RH |
4662 | } |
4663 | ||
252b5132 RH |
4664 | /* Work out the file positions of all the sections. This is called by |
4665 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4666 | VMAs must be known before this is called. | |
4667 | ||
e0638f70 AM |
4668 | Reloc sections come in two flavours: Those processed specially as |
4669 | "side-channel" data attached to a section to which they apply, and | |
4670 | those that bfd doesn't process as relocations. The latter sort are | |
4671 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4672 | consider the former sort here, unless they form part of the loadable | |
4673 | image. Reloc sections not assigned here will be handled later by | |
4674 | assign_file_positions_for_relocs. | |
252b5132 RH |
4675 | |
4676 | We also don't set the positions of the .symtab and .strtab here. */ | |
4677 | ||
b34976b6 | 4678 | static bfd_boolean |
c84fca4d AO |
4679 | assign_file_positions_except_relocs (bfd *abfd, |
4680 | struct bfd_link_info *link_info) | |
252b5132 | 4681 | { |
5c182d5f AM |
4682 | struct elf_obj_tdata *tdata = elf_tdata (abfd); |
4683 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
252b5132 | 4684 | file_ptr off; |
9c5bfbb7 | 4685 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4686 | |
4687 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4688 | && bfd_get_format (abfd) != bfd_core) | |
4689 | { | |
5c182d5f AM |
4690 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); |
4691 | unsigned int num_sec = elf_numsections (abfd); | |
252b5132 RH |
4692 | Elf_Internal_Shdr **hdrpp; |
4693 | unsigned int i; | |
4694 | ||
4695 | /* Start after the ELF header. */ | |
4696 | off = i_ehdrp->e_ehsize; | |
4697 | ||
4698 | /* We are not creating an executable, which means that we are | |
4699 | not creating a program header, and that the actual order of | |
4700 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4701 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4702 | { |
4703 | Elf_Internal_Shdr *hdr; | |
4704 | ||
4705 | hdr = *hdrpp; | |
e0638f70 AM |
4706 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4707 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4708 | || i == tdata->symtab_section |
4709 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4710 | || i == tdata->strtab_section) |
4711 | { | |
4712 | hdr->sh_offset = -1; | |
252b5132 | 4713 | } |
9ad5cbcf | 4714 | else |
b34976b6 | 4715 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4716 | |
9ad5cbcf AM |
4717 | if (i == SHN_LORESERVE - 1) |
4718 | { | |
4719 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4720 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4721 | } | |
252b5132 RH |
4722 | } |
4723 | } | |
4724 | else | |
4725 | { | |
f3520d2f AM |
4726 | unsigned int alloc; |
4727 | ||
252b5132 | 4728 | /* Assign file positions for the loaded sections based on the |
08a40648 | 4729 | assignment of sections to segments. */ |
f3520d2f AM |
4730 | if (!assign_file_positions_for_load_sections (abfd, link_info)) |
4731 | return FALSE; | |
4732 | ||
4733 | /* And for non-load sections. */ | |
4734 | if (!assign_file_positions_for_non_load_sections (abfd, link_info)) | |
4735 | return FALSE; | |
4736 | ||
e36284ab AM |
4737 | if (bed->elf_backend_modify_program_headers != NULL) |
4738 | { | |
4739 | if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info)) | |
4740 | return FALSE; | |
4741 | } | |
4742 | ||
f3520d2f AM |
4743 | /* Write out the program headers. */ |
4744 | alloc = tdata->program_header_size / bed->s->sizeof_phdr; | |
4745 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
4746 | || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0) | |
b34976b6 | 4747 | return FALSE; |
252b5132 | 4748 | |
5c182d5f | 4749 | off = tdata->next_file_pos; |
252b5132 RH |
4750 | } |
4751 | ||
4752 | /* Place the section headers. */ | |
45d6a902 | 4753 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4754 | i_ehdrp->e_shoff = off; |
4755 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4756 | ||
5c182d5f | 4757 | tdata->next_file_pos = off; |
252b5132 | 4758 | |
b34976b6 | 4759 | return TRUE; |
252b5132 RH |
4760 | } |
4761 | ||
b34976b6 | 4762 | static bfd_boolean |
217aa764 | 4763 | prep_headers (bfd *abfd) |
252b5132 RH |
4764 | { |
4765 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4766 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4767 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4768 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4769 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4770 | |
4771 | i_ehdrp = elf_elfheader (abfd); | |
4772 | i_shdrp = elf_elfsections (abfd); | |
4773 | ||
2b0f7ef9 | 4774 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4775 | if (shstrtab == NULL) |
b34976b6 | 4776 | return FALSE; |
252b5132 RH |
4777 | |
4778 | elf_shstrtab (abfd) = shstrtab; | |
4779 | ||
4780 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4781 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4782 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4783 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4784 | ||
4785 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4786 | i_ehdrp->e_ident[EI_DATA] = | |
4787 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4788 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4789 | ||
252b5132 RH |
4790 | if ((abfd->flags & DYNAMIC) != 0) |
4791 | i_ehdrp->e_type = ET_DYN; | |
4792 | else if ((abfd->flags & EXEC_P) != 0) | |
4793 | i_ehdrp->e_type = ET_EXEC; | |
4794 | else if (bfd_get_format (abfd) == bfd_core) | |
4795 | i_ehdrp->e_type = ET_CORE; | |
4796 | else | |
4797 | i_ehdrp->e_type = ET_REL; | |
4798 | ||
4799 | switch (bfd_get_arch (abfd)) | |
4800 | { | |
4801 | case bfd_arch_unknown: | |
4802 | i_ehdrp->e_machine = EM_NONE; | |
4803 | break; | |
aa4f99bb AO |
4804 | |
4805 | /* There used to be a long list of cases here, each one setting | |
4806 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4807 | in the corresponding bfd definition. To avoid duplication, | |
4808 | the switch was removed. Machines that need special handling | |
4809 | can generally do it in elf_backend_final_write_processing(), | |
4810 | unless they need the information earlier than the final write. | |
4811 | Such need can generally be supplied by replacing the tests for | |
4812 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4813 | default: |
9c5bfbb7 AM |
4814 | i_ehdrp->e_machine = bed->elf_machine_code; |
4815 | } | |
aa4f99bb | 4816 | |
252b5132 RH |
4817 | i_ehdrp->e_version = bed->s->ev_current; |
4818 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4819 | ||
c044fabd | 4820 | /* No program header, for now. */ |
252b5132 RH |
4821 | i_ehdrp->e_phoff = 0; |
4822 | i_ehdrp->e_phentsize = 0; | |
4823 | i_ehdrp->e_phnum = 0; | |
4824 | ||
c044fabd | 4825 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4826 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4827 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4828 | ||
c044fabd | 4829 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4830 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4831 | /* It all happens later. */ |
4832 | ; | |
252b5132 RH |
4833 | else |
4834 | { | |
4835 | i_ehdrp->e_phentsize = 0; | |
4836 | i_phdrp = 0; | |
4837 | i_ehdrp->e_phoff = 0; | |
4838 | } | |
4839 | ||
4840 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4841 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4842 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4843 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4844 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4845 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4846 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4847 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4848 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4849 | return FALSE; |
252b5132 | 4850 | |
b34976b6 | 4851 | return TRUE; |
252b5132 RH |
4852 | } |
4853 | ||
4854 | /* Assign file positions for all the reloc sections which are not part | |
4855 | of the loadable file image. */ | |
4856 | ||
4857 | void | |
217aa764 | 4858 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4859 | { |
4860 | file_ptr off; | |
9ad5cbcf | 4861 | unsigned int i, num_sec; |
252b5132 RH |
4862 | Elf_Internal_Shdr **shdrpp; |
4863 | ||
4864 | off = elf_tdata (abfd)->next_file_pos; | |
4865 | ||
9ad5cbcf AM |
4866 | num_sec = elf_numsections (abfd); |
4867 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4868 | { |
4869 | Elf_Internal_Shdr *shdrp; | |
4870 | ||
4871 | shdrp = *shdrpp; | |
4872 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4873 | && shdrp->sh_offset == -1) | |
b34976b6 | 4874 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4875 | } |
4876 | ||
4877 | elf_tdata (abfd)->next_file_pos = off; | |
4878 | } | |
4879 | ||
b34976b6 | 4880 | bfd_boolean |
217aa764 | 4881 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4882 | { |
9c5bfbb7 | 4883 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4884 | Elf_Internal_Ehdr *i_ehdrp; |
4885 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4886 | bfd_boolean failed; |
9ad5cbcf | 4887 | unsigned int count, num_sec; |
252b5132 RH |
4888 | |
4889 | if (! abfd->output_has_begun | |
217aa764 | 4890 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4891 | return FALSE; |
252b5132 RH |
4892 | |
4893 | i_shdrp = elf_elfsections (abfd); | |
4894 | i_ehdrp = elf_elfheader (abfd); | |
4895 | ||
b34976b6 | 4896 | failed = FALSE; |
252b5132 RH |
4897 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4898 | if (failed) | |
b34976b6 | 4899 | return FALSE; |
252b5132 RH |
4900 | |
4901 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4902 | ||
c044fabd | 4903 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4904 | num_sec = elf_numsections (abfd); |
4905 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4906 | { |
4907 | if (bed->elf_backend_section_processing) | |
4908 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4909 | if (i_shdrp[count]->contents) | |
4910 | { | |
dc810e39 AM |
4911 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4912 | ||
252b5132 | 4913 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4914 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4915 | return FALSE; |
252b5132 | 4916 | } |
9ad5cbcf AM |
4917 | if (count == SHN_LORESERVE - 1) |
4918 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4919 | } |
4920 | ||
4921 | /* Write out the section header names. */ | |
26ae6d5e DJ |
4922 | if (elf_shstrtab (abfd) != NULL |
4923 | && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
08a40648 | 4924 | || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))) |
b34976b6 | 4925 | return FALSE; |
252b5132 RH |
4926 | |
4927 | if (bed->elf_backend_final_write_processing) | |
4928 | (*bed->elf_backend_final_write_processing) (abfd, | |
4929 | elf_tdata (abfd)->linker); | |
4930 | ||
ff59fc36 RM |
4931 | if (!bed->s->write_shdrs_and_ehdr (abfd)) |
4932 | return FALSE; | |
4933 | ||
4934 | /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */ | |
bfb53a4f RM |
4935 | if (elf_tdata (abfd)->after_write_object_contents) |
4936 | return (*elf_tdata (abfd)->after_write_object_contents) (abfd); | |
ff59fc36 RM |
4937 | |
4938 | return TRUE; | |
252b5132 RH |
4939 | } |
4940 | ||
b34976b6 | 4941 | bfd_boolean |
217aa764 | 4942 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4943 | { |
c044fabd | 4944 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4945 | return _bfd_elf_write_object_contents (abfd); |
4946 | } | |
c044fabd KH |
4947 | |
4948 | /* Given a section, search the header to find them. */ | |
4949 | ||
252b5132 | 4950 | int |
198beae2 | 4951 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4952 | { |
9c5bfbb7 | 4953 | const struct elf_backend_data *bed; |
252b5132 | 4954 | int index; |
252b5132 | 4955 | |
9ad5cbcf AM |
4956 | if (elf_section_data (asect) != NULL |
4957 | && elf_section_data (asect)->this_idx != 0) | |
4958 | return elf_section_data (asect)->this_idx; | |
4959 | ||
4960 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4961 | index = SHN_ABS; |
4962 | else if (bfd_is_com_section (asect)) | |
4963 | index = SHN_COMMON; | |
4964 | else if (bfd_is_und_section (asect)) | |
4965 | index = SHN_UNDEF; | |
4966 | else | |
6dc132d9 | 4967 | index = -1; |
252b5132 | 4968 | |
af746e92 | 4969 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4970 | if (bed->elf_backend_section_from_bfd_section) |
4971 | { | |
af746e92 | 4972 | int retval = index; |
9ad5cbcf | 4973 | |
af746e92 AM |
4974 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4975 | return retval; | |
252b5132 RH |
4976 | } |
4977 | ||
af746e92 AM |
4978 | if (index == -1) |
4979 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4980 | |
af746e92 | 4981 | return index; |
252b5132 RH |
4982 | } |
4983 | ||
4984 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4985 | on error. */ | |
4986 | ||
4987 | int | |
217aa764 | 4988 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4989 | { |
4990 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4991 | int idx; | |
4992 | flagword flags = asym_ptr->flags; | |
4993 | ||
4994 | /* When gas creates relocations against local labels, it creates its | |
4995 | own symbol for the section, but does put the symbol into the | |
4996 | symbol chain, so udata is 0. When the linker is generating | |
4997 | relocatable output, this section symbol may be for one of the | |
4998 | input sections rather than the output section. */ | |
4999 | if (asym_ptr->udata.i == 0 | |
5000 | && (flags & BSF_SECTION_SYM) | |
5001 | && asym_ptr->section) | |
5002 | { | |
5372391b | 5003 | asection *sec; |
252b5132 RH |
5004 | int indx; |
5005 | ||
5372391b AM |
5006 | sec = asym_ptr->section; |
5007 | if (sec->owner != abfd && sec->output_section != NULL) | |
5008 | sec = sec->output_section; | |
5009 | if (sec->owner == abfd | |
5010 | && (indx = sec->index) < elf_num_section_syms (abfd) | |
4e89ac30 | 5011 | && elf_section_syms (abfd)[indx] != NULL) |
252b5132 RH |
5012 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
5013 | } | |
5014 | ||
5015 | idx = asym_ptr->udata.i; | |
5016 | ||
5017 | if (idx == 0) | |
5018 | { | |
5019 | /* This case can occur when using --strip-symbol on a symbol | |
08a40648 | 5020 | which is used in a relocation entry. */ |
252b5132 | 5021 | (*_bfd_error_handler) |
d003868e AM |
5022 | (_("%B: symbol `%s' required but not present"), |
5023 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5024 | bfd_set_error (bfd_error_no_symbols); |
5025 | return -1; | |
5026 | } | |
5027 | ||
5028 | #if DEBUG & 4 | |
5029 | { | |
5030 | fprintf (stderr, | |
661a3fd4 | 5031 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5032 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5033 | elf_symbol_flags (flags)); | |
5034 | fflush (stderr); | |
5035 | } | |
5036 | #endif | |
5037 | ||
5038 | return idx; | |
5039 | } | |
5040 | ||
84d1d650 | 5041 | /* Rewrite program header information. */ |
252b5132 | 5042 | |
b34976b6 | 5043 | static bfd_boolean |
84d1d650 | 5044 | rewrite_elf_program_header (bfd *ibfd, bfd *obfd) |
252b5132 | 5045 | { |
b34976b6 AM |
5046 | Elf_Internal_Ehdr *iehdr; |
5047 | struct elf_segment_map *map; | |
5048 | struct elf_segment_map *map_first; | |
5049 | struct elf_segment_map **pointer_to_map; | |
5050 | Elf_Internal_Phdr *segment; | |
5051 | asection *section; | |
5052 | unsigned int i; | |
5053 | unsigned int num_segments; | |
5054 | bfd_boolean phdr_included = FALSE; | |
5055 | bfd_vma maxpagesize; | |
5056 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5057 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5058 | const struct elf_backend_data *bed; |
bc67d8a6 | 5059 | |
caf47ea6 | 5060 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5061 | iehdr = elf_elfheader (ibfd); |
5062 | ||
bc67d8a6 | 5063 | map_first = NULL; |
c044fabd | 5064 | pointer_to_map = &map_first; |
252b5132 RH |
5065 | |
5066 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5067 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5068 | ||
5069 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5070 | #define SEGMENT_END(segment, start) \ |
5071 | (start + (segment->p_memsz > segment->p_filesz \ | |
5072 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5073 | |
eecdbe52 JJ |
5074 | #define SECTION_SIZE(section, segment) \ |
5075 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5076 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5077 | ? section->size : 0) |
eecdbe52 | 5078 | |
b34976b6 | 5079 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5080 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5081 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5082 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5083 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5084 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5085 | |
b34976b6 | 5086 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5087 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5088 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5089 | (section->lma >= base \ | |
eecdbe52 | 5090 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5091 | <= SEGMENT_END (segment, base))) |
252b5132 | 5092 | |
c044fabd | 5093 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5094 | #define IS_COREFILE_NOTE(p, s) \ |
5095 | (p->p_type == PT_NOTE \ | |
5096 | && bfd_get_format (ibfd) == bfd_core \ | |
5097 | && s->vma == 0 && s->lma == 0 \ | |
5098 | && (bfd_vma) s->filepos >= p->p_offset \ | |
cb3ff1e5 | 5099 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5100 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5101 | |
5102 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5103 | linker, which generates a PT_INTERP section with p_vaddr and | |
5104 | p_memsz set to 0. */ | |
aecc8f8a AM |
5105 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5106 | (p->p_vaddr == 0 \ | |
5107 | && p->p_paddr == 0 \ | |
5108 | && p->p_memsz == 0 \ | |
5109 | && p->p_filesz > 0 \ | |
5110 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5111 | && s->size > 0 \ |
aecc8f8a | 5112 | && (bfd_vma) s->filepos >= p->p_offset \ |
cb3ff1e5 | 5113 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5114 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5115 | |
bc67d8a6 NC |
5116 | /* Decide if the given section should be included in the given segment. |
5117 | A section will be included if: | |
f5ffc919 | 5118 | 1. It is within the address space of the segment -- we use the LMA |
08a40648 | 5119 | if that is set for the segment and the VMA otherwise, |
bc67d8a6 NC |
5120 | 2. It is an allocated segment, |
5121 | 3. There is an output section associated with it, | |
eecdbe52 | 5122 | 4. The section has not already been allocated to a previous segment. |
2b05f1b7 | 5123 | 5. PT_GNU_STACK segments do not include any sections. |
03394ac9 | 5124 | 6. PT_TLS segment includes only SHF_TLS sections. |
6f79b219 JJ |
5125 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5126 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
08a40648 | 5127 | (with the possible exception of .dynamic). */ |
9f17e2a6 | 5128 | #define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \ |
2b05f1b7 L |
5129 | ((((segment->p_paddr \ |
5130 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5131 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
5132 | && (section->flags & SEC_ALLOC) != 0) \ | |
5133 | || IS_COREFILE_NOTE (segment, section)) \ | |
5134 | && segment->p_type != PT_GNU_STACK \ | |
5135 | && (segment->p_type != PT_TLS \ | |
5136 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5137 | && (segment->p_type == PT_LOAD \ | |
5138 | || segment->p_type == PT_TLS \ | |
5139 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
5140 | && (segment->p_type != PT_DYNAMIC \ | |
5141 | || SECTION_SIZE (section, segment) > 0 \ | |
5142 | || (segment->p_paddr \ | |
5143 | ? segment->p_paddr != section->lma \ | |
5144 | : segment->p_vaddr != section->vma) \ | |
5145 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5146 | == 0)) \ | |
5147 | && ! section->segment_mark) | |
bc67d8a6 | 5148 | |
9f17e2a6 L |
5149 | /* If the output section of a section in the input segment is NULL, |
5150 | it is removed from the corresponding output segment. */ | |
5151 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ | |
5152 | (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \ | |
5153 | && section->output_section != NULL) | |
5154 | ||
b34976b6 | 5155 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5156 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5157 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5158 | ||
5159 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5160 | their VMA address ranges and their LMA address ranges overlap. | |
5161 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5162 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5163 | to the same VMA range, but with the .data section mapped to a different | |
5164 | LMA. */ | |
aecc8f8a | 5165 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea | 5166 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
08a40648 | 5167 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ |
b5f852ea | 5168 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ |
08a40648 | 5169 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) |
bc67d8a6 NC |
5170 | |
5171 | /* Initialise the segment mark field. */ | |
5172 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5173 | section->segment_mark = FALSE; |
bc67d8a6 | 5174 | |
252b5132 | 5175 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5176 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5177 | in the loadable segments. These can be created by weird |
aecc8f8a | 5178 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5179 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5180 | i < num_segments; | |
c044fabd | 5181 | i++, segment++) |
252b5132 | 5182 | { |
252b5132 | 5183 | unsigned int j; |
c044fabd | 5184 | Elf_Internal_Phdr *segment2; |
252b5132 | 5185 | |
aecc8f8a AM |
5186 | if (segment->p_type == PT_INTERP) |
5187 | for (section = ibfd->sections; section; section = section->next) | |
5188 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5189 | { | |
5190 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5191 | assignment code will work. */ |
aecc8f8a AM |
5192 | segment->p_vaddr = section->vma; |
5193 | break; | |
5194 | } | |
5195 | ||
bc67d8a6 | 5196 | if (segment->p_type != PT_LOAD) |
b10a8ae0 L |
5197 | { |
5198 | /* Remove PT_GNU_RELRO segment. */ | |
5199 | if (segment->p_type == PT_GNU_RELRO) | |
5200 | segment->p_type = PT_NULL; | |
5201 | continue; | |
5202 | } | |
c044fabd | 5203 | |
bc67d8a6 | 5204 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5205 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5206 | { |
5207 | bfd_signed_vma extra_length; | |
c044fabd | 5208 | |
bc67d8a6 NC |
5209 | if (segment2->p_type != PT_LOAD |
5210 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5211 | continue; | |
c044fabd | 5212 | |
bc67d8a6 NC |
5213 | /* Merge the two segments together. */ |
5214 | if (segment2->p_vaddr < segment->p_vaddr) | |
5215 | { | |
c044fabd | 5216 | /* Extend SEGMENT2 to include SEGMENT and then delete |
08a40648 | 5217 | SEGMENT. */ |
bc67d8a6 NC |
5218 | extra_length = |
5219 | SEGMENT_END (segment, segment->p_vaddr) | |
5220 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5221 | |
bc67d8a6 NC |
5222 | if (extra_length > 0) |
5223 | { | |
5224 | segment2->p_memsz += extra_length; | |
5225 | segment2->p_filesz += extra_length; | |
5226 | } | |
c044fabd | 5227 | |
bc67d8a6 | 5228 | segment->p_type = PT_NULL; |
c044fabd | 5229 | |
bc67d8a6 NC |
5230 | /* Since we have deleted P we must restart the outer loop. */ |
5231 | i = 0; | |
5232 | segment = elf_tdata (ibfd)->phdr; | |
5233 | break; | |
5234 | } | |
5235 | else | |
5236 | { | |
c044fabd | 5237 | /* Extend SEGMENT to include SEGMENT2 and then delete |
08a40648 | 5238 | SEGMENT2. */ |
bc67d8a6 NC |
5239 | extra_length = |
5240 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5241 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5242 | |
bc67d8a6 NC |
5243 | if (extra_length > 0) |
5244 | { | |
5245 | segment->p_memsz += extra_length; | |
5246 | segment->p_filesz += extra_length; | |
5247 | } | |
c044fabd | 5248 | |
bc67d8a6 NC |
5249 | segment2->p_type = PT_NULL; |
5250 | } | |
5251 | } | |
5252 | } | |
c044fabd | 5253 | |
bc67d8a6 NC |
5254 | /* The second scan attempts to assign sections to segments. */ |
5255 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5256 | i < num_segments; | |
5257 | i ++, segment ++) | |
5258 | { | |
5259 | unsigned int section_count; | |
5260 | asection ** sections; | |
5261 | asection * output_section; | |
5262 | unsigned int isec; | |
5263 | bfd_vma matching_lma; | |
5264 | bfd_vma suggested_lma; | |
5265 | unsigned int j; | |
dc810e39 | 5266 | bfd_size_type amt; |
9f17e2a6 | 5267 | asection * first_section; |
bc67d8a6 NC |
5268 | |
5269 | if (segment->p_type == PT_NULL) | |
5270 | continue; | |
c044fabd | 5271 | |
9f17e2a6 | 5272 | first_section = NULL; |
bc67d8a6 | 5273 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5274 | for (section = ibfd->sections, section_count = 0; |
5275 | section != NULL; | |
5276 | section = section->next) | |
9f17e2a6 L |
5277 | { |
5278 | /* Find the first section in the input segment, which may be | |
5279 | removed from the corresponding output segment. */ | |
5280 | if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed)) | |
5281 | { | |
5282 | if (first_section == NULL) | |
5283 | first_section = section; | |
5284 | if (section->output_section != NULL) | |
5285 | ++section_count; | |
5286 | } | |
5287 | } | |
811072d8 | 5288 | |
b5f852ea NC |
5289 | /* Allocate a segment map big enough to contain |
5290 | all of the sections we have selected. */ | |
dc810e39 AM |
5291 | amt = sizeof (struct elf_segment_map); |
5292 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5293 | map = bfd_zalloc (obfd, amt); |
bc67d8a6 | 5294 | if (map == NULL) |
b34976b6 | 5295 | return FALSE; |
252b5132 RH |
5296 | |
5297 | /* Initialise the fields of the segment map. Default to | |
5298 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5299 | map->next = NULL; |
5300 | map->p_type = segment->p_type; | |
5301 | map->p_flags = segment->p_flags; | |
5302 | map->p_flags_valid = 1; | |
55d55ac7 | 5303 | |
9f17e2a6 L |
5304 | /* If the first section in the input segment is removed, there is |
5305 | no need to preserve segment physical address in the corresponding | |
5306 | output segment. */ | |
945c025a | 5307 | if (!first_section || first_section->output_section != NULL) |
9f17e2a6 L |
5308 | { |
5309 | map->p_paddr = segment->p_paddr; | |
5310 | map->p_paddr_valid = 1; | |
5311 | } | |
252b5132 RH |
5312 | |
5313 | /* Determine if this segment contains the ELF file header | |
5314 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5315 | map->includes_filehdr = (segment->p_offset == 0 |
5316 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5317 | |
bc67d8a6 | 5318 | map->includes_phdrs = 0; |
252b5132 | 5319 | |
bc67d8a6 | 5320 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5321 | { |
bc67d8a6 NC |
5322 | map->includes_phdrs = |
5323 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5324 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5325 | >= ((bfd_vma) iehdr->e_phoff |
5326 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5327 | |
bc67d8a6 | 5328 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5329 | phdr_included = TRUE; |
252b5132 RH |
5330 | } |
5331 | ||
bc67d8a6 | 5332 | if (section_count == 0) |
252b5132 RH |
5333 | { |
5334 | /* Special segments, such as the PT_PHDR segment, may contain | |
5335 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5336 | something. They are allowed by the ELF spec however, so only |
5337 | a warning is produced. */ | |
bc67d8a6 | 5338 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5339 | (*_bfd_error_handler) |
d003868e AM |
5340 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5341 | ibfd); | |
252b5132 | 5342 | |
bc67d8a6 | 5343 | map->count = 0; |
c044fabd KH |
5344 | *pointer_to_map = map; |
5345 | pointer_to_map = &map->next; | |
252b5132 RH |
5346 | |
5347 | continue; | |
5348 | } | |
5349 | ||
5350 | /* Now scan the sections in the input BFD again and attempt | |
5351 | to add their corresponding output sections to the segment map. | |
5352 | The problem here is how to handle an output section which has | |
5353 | been moved (ie had its LMA changed). There are four possibilities: | |
5354 | ||
5355 | 1. None of the sections have been moved. | |
5356 | In this case we can continue to use the segment LMA from the | |
5357 | input BFD. | |
5358 | ||
5359 | 2. All of the sections have been moved by the same amount. | |
5360 | In this case we can change the segment's LMA to match the LMA | |
5361 | of the first section. | |
5362 | ||
5363 | 3. Some of the sections have been moved, others have not. | |
5364 | In this case those sections which have not been moved can be | |
5365 | placed in the current segment which will have to have its size, | |
5366 | and possibly its LMA changed, and a new segment or segments will | |
5367 | have to be created to contain the other sections. | |
5368 | ||
b5f852ea | 5369 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5370 | In this case we can change the segment's LMA to match the LMA |
5371 | of the first section and we will have to create a new segment | |
5372 | or segments to contain the other sections. | |
5373 | ||
5374 | In order to save time, we allocate an array to hold the section | |
5375 | pointers that we are interested in. As these sections get assigned | |
5376 | to a segment, they are removed from this array. */ | |
5377 | ||
0b14c2aa L |
5378 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5379 | to work around this long long bug. */ | |
d0fb9a8d | 5380 | sections = bfd_malloc2 (section_count, sizeof (asection *)); |
252b5132 | 5381 | if (sections == NULL) |
b34976b6 | 5382 | return FALSE; |
252b5132 RH |
5383 | |
5384 | /* Step One: Scan for segment vs section LMA conflicts. | |
5385 | Also add the sections to the section array allocated above. | |
5386 | Also add the sections to the current segment. In the common | |
5387 | case, where the sections have not been moved, this means that | |
5388 | we have completely filled the segment, and there is nothing | |
5389 | more to do. */ | |
252b5132 | 5390 | isec = 0; |
72730e0c | 5391 | matching_lma = 0; |
252b5132 RH |
5392 | suggested_lma = 0; |
5393 | ||
bc67d8a6 NC |
5394 | for (j = 0, section = ibfd->sections; |
5395 | section != NULL; | |
5396 | section = section->next) | |
252b5132 | 5397 | { |
caf47ea6 | 5398 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5399 | { |
bc67d8a6 NC |
5400 | output_section = section->output_section; |
5401 | ||
5402 | sections[j ++] = section; | |
252b5132 RH |
5403 | |
5404 | /* The Solaris native linker always sets p_paddr to 0. | |
5405 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5406 | correct value. Note - some backends require that |
5407 | p_paddr be left as zero. */ | |
bc67d8a6 | 5408 | if (segment->p_paddr == 0 |
4455705d | 5409 | && segment->p_vaddr != 0 |
5e8d7549 | 5410 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5411 | && isec == 0 |
bc67d8a6 NC |
5412 | && output_section->lma != 0 |
5413 | && (output_section->vma == (segment->p_vaddr | |
5414 | + (map->includes_filehdr | |
5415 | ? iehdr->e_ehsize | |
5416 | : 0) | |
5417 | + (map->includes_phdrs | |
079e9a2f AM |
5418 | ? (iehdr->e_phnum |
5419 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5420 | : 0)))) |
5421 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5422 | |
5423 | /* Match up the physical address of the segment with the | |
5424 | LMA address of the output section. */ | |
bc67d8a6 | 5425 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5426 | || IS_COREFILE_NOTE (segment, section) |
5427 | || (bed->want_p_paddr_set_to_zero && | |
08a40648 | 5428 | IS_CONTAINED_BY_VMA (output_section, segment))) |
252b5132 | 5429 | { |
c981028a | 5430 | if (matching_lma == 0 || output_section->lma < matching_lma) |
bc67d8a6 | 5431 | matching_lma = output_section->lma; |
252b5132 RH |
5432 | |
5433 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5434 | then it does not overlap any other section within that |
252b5132 | 5435 | segment. */ |
bc67d8a6 | 5436 | map->sections[isec ++] = output_section; |
252b5132 RH |
5437 | } |
5438 | else if (suggested_lma == 0) | |
bc67d8a6 | 5439 | suggested_lma = output_section->lma; |
252b5132 RH |
5440 | } |
5441 | } | |
5442 | ||
bc67d8a6 | 5443 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5444 | |
5445 | /* Step Two: Adjust the physical address of the current segment, | |
5446 | if necessary. */ | |
bc67d8a6 | 5447 | if (isec == section_count) |
252b5132 RH |
5448 | { |
5449 | /* All of the sections fitted within the segment as currently | |
5450 | specified. This is the default case. Add the segment to | |
5451 | the list of built segments and carry on to process the next | |
5452 | program header in the input BFD. */ | |
bc67d8a6 | 5453 | map->count = section_count; |
c044fabd KH |
5454 | *pointer_to_map = map; |
5455 | pointer_to_map = &map->next; | |
08a40648 | 5456 | |
3271a814 NS |
5457 | if (matching_lma != map->p_paddr |
5458 | && !map->includes_filehdr && !map->includes_phdrs) | |
5459 | /* There is some padding before the first section in the | |
5460 | segment. So, we must account for that in the output | |
5461 | segment's vma. */ | |
5462 | map->p_vaddr_offset = matching_lma - map->p_paddr; | |
08a40648 | 5463 | |
252b5132 RH |
5464 | free (sections); |
5465 | continue; | |
5466 | } | |
252b5132 RH |
5467 | else |
5468 | { | |
72730e0c AM |
5469 | if (matching_lma != 0) |
5470 | { | |
5471 | /* At least one section fits inside the current segment. | |
5472 | Keep it, but modify its physical address to match the | |
5473 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5474 | map->p_paddr = matching_lma; |
72730e0c AM |
5475 | } |
5476 | else | |
5477 | { | |
5478 | /* None of the sections fitted inside the current segment. | |
5479 | Change the current segment's physical address to match | |
5480 | the LMA of the first section. */ | |
bc67d8a6 | 5481 | map->p_paddr = suggested_lma; |
72730e0c AM |
5482 | } |
5483 | ||
bc67d8a6 NC |
5484 | /* Offset the segment physical address from the lma |
5485 | to allow for space taken up by elf headers. */ | |
5486 | if (map->includes_filehdr) | |
5487 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5488 | |
bc67d8a6 NC |
5489 | if (map->includes_phdrs) |
5490 | { | |
5491 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5492 | ||
5493 | /* iehdr->e_phnum is just an estimate of the number | |
5494 | of program headers that we will need. Make a note | |
5495 | here of the number we used and the segment we chose | |
5496 | to hold these headers, so that we can adjust the | |
5497 | offset when we know the correct value. */ | |
5498 | phdr_adjust_num = iehdr->e_phnum; | |
5499 | phdr_adjust_seg = map; | |
5500 | } | |
252b5132 RH |
5501 | } |
5502 | ||
5503 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5504 | those that fit to the current segment and removing them from the |
252b5132 RH |
5505 | sections array; but making sure not to leave large gaps. Once all |
5506 | possible sections have been assigned to the current segment it is | |
5507 | added to the list of built segments and if sections still remain | |
5508 | to be assigned, a new segment is constructed before repeating | |
5509 | the loop. */ | |
5510 | isec = 0; | |
5511 | do | |
5512 | { | |
bc67d8a6 | 5513 | map->count = 0; |
252b5132 RH |
5514 | suggested_lma = 0; |
5515 | ||
5516 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5517 | for (j = 0; j < section_count; j++) |
252b5132 | 5518 | { |
bc67d8a6 | 5519 | section = sections[j]; |
252b5132 | 5520 | |
bc67d8a6 | 5521 | if (section == NULL) |
252b5132 RH |
5522 | continue; |
5523 | ||
bc67d8a6 | 5524 | output_section = section->output_section; |
252b5132 | 5525 | |
bc67d8a6 | 5526 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5527 | |
bc67d8a6 NC |
5528 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5529 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5530 | { |
bc67d8a6 | 5531 | if (map->count == 0) |
252b5132 RH |
5532 | { |
5533 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5534 | the beginning of the segment, then something is |
5535 | wrong. */ | |
5536 | if (output_section->lma != | |
5537 | (map->p_paddr | |
5538 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5539 | + (map->includes_phdrs | |
5540 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5541 | : 0))) | |
252b5132 RH |
5542 | abort (); |
5543 | } | |
5544 | else | |
5545 | { | |
5546 | asection * prev_sec; | |
252b5132 | 5547 | |
bc67d8a6 | 5548 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5549 | |
5550 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5551 | and the start of this section is more than |
5552 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5553 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5554 | maxpagesize) |
caf47ea6 | 5555 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5556 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5557 | > output_section->lma)) |
252b5132 RH |
5558 | { |
5559 | if (suggested_lma == 0) | |
bc67d8a6 | 5560 | suggested_lma = output_section->lma; |
252b5132 RH |
5561 | |
5562 | continue; | |
5563 | } | |
5564 | } | |
5565 | ||
bc67d8a6 | 5566 | map->sections[map->count++] = output_section; |
252b5132 RH |
5567 | ++isec; |
5568 | sections[j] = NULL; | |
b34976b6 | 5569 | section->segment_mark = TRUE; |
252b5132 RH |
5570 | } |
5571 | else if (suggested_lma == 0) | |
bc67d8a6 | 5572 | suggested_lma = output_section->lma; |
252b5132 RH |
5573 | } |
5574 | ||
bc67d8a6 | 5575 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5576 | |
5577 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5578 | *pointer_to_map = map; |
5579 | pointer_to_map = &map->next; | |
252b5132 | 5580 | |
bc67d8a6 | 5581 | if (isec < section_count) |
252b5132 RH |
5582 | { |
5583 | /* We still have not allocated all of the sections to | |
5584 | segments. Create a new segment here, initialise it | |
5585 | and carry on looping. */ | |
dc810e39 AM |
5586 | amt = sizeof (struct elf_segment_map); |
5587 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5588 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5589 | if (map == NULL) |
5ed6aba4 NC |
5590 | { |
5591 | free (sections); | |
5592 | return FALSE; | |
5593 | } | |
252b5132 RH |
5594 | |
5595 | /* Initialise the fields of the segment map. Set the physical | |
5596 | physical address to the LMA of the first section that has | |
5597 | not yet been assigned. */ | |
bc67d8a6 NC |
5598 | map->next = NULL; |
5599 | map->p_type = segment->p_type; | |
5600 | map->p_flags = segment->p_flags; | |
5601 | map->p_flags_valid = 1; | |
5602 | map->p_paddr = suggested_lma; | |
5603 | map->p_paddr_valid = 1; | |
5604 | map->includes_filehdr = 0; | |
5605 | map->includes_phdrs = 0; | |
252b5132 RH |
5606 | } |
5607 | } | |
bc67d8a6 | 5608 | while (isec < section_count); |
252b5132 RH |
5609 | |
5610 | free (sections); | |
5611 | } | |
5612 | ||
5613 | /* The Solaris linker creates program headers in which all the | |
5614 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5615 | file, we get confused. Check for this case, and if we find it | |
5616 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5617 | for (map = map_first; map != NULL; map = map->next) |
5618 | if (map->p_paddr != 0) | |
252b5132 | 5619 | break; |
bc67d8a6 | 5620 | if (map == NULL) |
b5f852ea NC |
5621 | for (map = map_first; map != NULL; map = map->next) |
5622 | map->p_paddr_valid = 0; | |
252b5132 | 5623 | |
bc67d8a6 NC |
5624 | elf_tdata (obfd)->segment_map = map_first; |
5625 | ||
5626 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5627 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5628 | the offset if necessary. */ |
5629 | if (phdr_adjust_seg != NULL) | |
5630 | { | |
5631 | unsigned int count; | |
c044fabd | 5632 | |
bc67d8a6 | 5633 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5634 | count++; |
252b5132 | 5635 | |
bc67d8a6 NC |
5636 | if (count > phdr_adjust_num) |
5637 | phdr_adjust_seg->p_paddr | |
5638 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5639 | } | |
c044fabd | 5640 | |
bc67d8a6 | 5641 | #undef SEGMENT_END |
eecdbe52 | 5642 | #undef SECTION_SIZE |
bc67d8a6 NC |
5643 | #undef IS_CONTAINED_BY_VMA |
5644 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5645 | #undef IS_COREFILE_NOTE |
bc67d8a6 | 5646 | #undef IS_SOLARIS_PT_INTERP |
9f17e2a6 | 5647 | #undef IS_SECTION_IN_INPUT_SEGMENT |
bc67d8a6 NC |
5648 | #undef INCLUDE_SECTION_IN_SEGMENT |
5649 | #undef SEGMENT_AFTER_SEGMENT | |
5650 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5651 | return TRUE; |
252b5132 RH |
5652 | } |
5653 | ||
84d1d650 L |
5654 | /* Copy ELF program header information. */ |
5655 | ||
5656 | static bfd_boolean | |
5657 | copy_elf_program_header (bfd *ibfd, bfd *obfd) | |
5658 | { | |
5659 | Elf_Internal_Ehdr *iehdr; | |
5660 | struct elf_segment_map *map; | |
5661 | struct elf_segment_map *map_first; | |
5662 | struct elf_segment_map **pointer_to_map; | |
5663 | Elf_Internal_Phdr *segment; | |
5664 | unsigned int i; | |
5665 | unsigned int num_segments; | |
5666 | bfd_boolean phdr_included = FALSE; | |
5667 | ||
5668 | iehdr = elf_elfheader (ibfd); | |
5669 | ||
5670 | map_first = NULL; | |
5671 | pointer_to_map = &map_first; | |
5672 | ||
5673 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5674 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5675 | i < num_segments; | |
5676 | i++, segment++) | |
5677 | { | |
5678 | asection *section; | |
5679 | unsigned int section_count; | |
5680 | bfd_size_type amt; | |
5681 | Elf_Internal_Shdr *this_hdr; | |
53020534 | 5682 | asection *first_section = NULL; |
c981028a | 5683 | asection *lowest_section = NULL; |
84d1d650 | 5684 | |
84d1d650 L |
5685 | /* Compute how many sections are in this segment. */ |
5686 | for (section = ibfd->sections, section_count = 0; | |
5687 | section != NULL; | |
5688 | section = section->next) | |
5689 | { | |
5690 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5691 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
3271a814 | 5692 | { |
53020534 | 5693 | if (!first_section) |
c981028a DJ |
5694 | first_section = lowest_section = section; |
5695 | if (section->lma < lowest_section->lma) | |
5696 | lowest_section = section; | |
3271a814 NS |
5697 | section_count++; |
5698 | } | |
84d1d650 L |
5699 | } |
5700 | ||
5701 | /* Allocate a segment map big enough to contain | |
5702 | all of the sections we have selected. */ | |
5703 | amt = sizeof (struct elf_segment_map); | |
5704 | if (section_count != 0) | |
5705 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
41f8ce69 | 5706 | map = bfd_zalloc (obfd, amt); |
84d1d650 L |
5707 | if (map == NULL) |
5708 | return FALSE; | |
5709 | ||
5710 | /* Initialize the fields of the output segment map with the | |
5711 | input segment. */ | |
5712 | map->next = NULL; | |
5713 | map->p_type = segment->p_type; | |
5714 | map->p_flags = segment->p_flags; | |
5715 | map->p_flags_valid = 1; | |
5716 | map->p_paddr = segment->p_paddr; | |
5717 | map->p_paddr_valid = 1; | |
3f570048 AM |
5718 | map->p_align = segment->p_align; |
5719 | map->p_align_valid = 1; | |
3271a814 | 5720 | map->p_vaddr_offset = 0; |
84d1d650 | 5721 | |
b10a8ae0 L |
5722 | if (map->p_type == PT_GNU_RELRO |
5723 | && segment->p_filesz == segment->p_memsz) | |
5724 | { | |
5725 | /* The PT_GNU_RELRO segment may contain the first a few | |
5726 | bytes in the .got.plt section even if the whole .got.plt | |
5727 | section isn't in the PT_GNU_RELRO segment. We won't | |
5728 | change the size of the PT_GNU_RELRO segment. */ | |
5729 | map->p_size = segment->p_filesz; | |
5730 | map->p_size_valid = 1; | |
5731 | } | |
5732 | ||
84d1d650 L |
5733 | /* Determine if this segment contains the ELF file header |
5734 | and if it contains the program headers themselves. */ | |
5735 | map->includes_filehdr = (segment->p_offset == 0 | |
5736 | && segment->p_filesz >= iehdr->e_ehsize); | |
5737 | ||
5738 | map->includes_phdrs = 0; | |
5739 | if (! phdr_included || segment->p_type != PT_LOAD) | |
5740 | { | |
5741 | map->includes_phdrs = | |
5742 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5743 | && (segment->p_offset + segment->p_filesz | |
5744 | >= ((bfd_vma) iehdr->e_phoff | |
5745 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
5746 | ||
5747 | if (segment->p_type == PT_LOAD && map->includes_phdrs) | |
5748 | phdr_included = TRUE; | |
5749 | } | |
5750 | ||
3271a814 NS |
5751 | if (!map->includes_phdrs && !map->includes_filehdr) |
5752 | /* There is some other padding before the first section. */ | |
c981028a | 5753 | map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0) |
53020534 | 5754 | - segment->p_paddr); |
08a40648 | 5755 | |
84d1d650 L |
5756 | if (section_count != 0) |
5757 | { | |
5758 | unsigned int isec = 0; | |
5759 | ||
53020534 | 5760 | for (section = first_section; |
84d1d650 L |
5761 | section != NULL; |
5762 | section = section->next) | |
5763 | { | |
5764 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5765 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
53020534 L |
5766 | { |
5767 | map->sections[isec++] = section->output_section; | |
5768 | if (isec == section_count) | |
5769 | break; | |
5770 | } | |
84d1d650 L |
5771 | } |
5772 | } | |
5773 | ||
5774 | map->count = section_count; | |
5775 | *pointer_to_map = map; | |
5776 | pointer_to_map = &map->next; | |
5777 | } | |
5778 | ||
5779 | elf_tdata (obfd)->segment_map = map_first; | |
5780 | return TRUE; | |
5781 | } | |
5782 | ||
5783 | /* Copy private BFD data. This copies or rewrites ELF program header | |
5784 | information. */ | |
5785 | ||
5786 | static bfd_boolean | |
5787 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5788 | { | |
84d1d650 L |
5789 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5790 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5791 | return TRUE; | |
5792 | ||
5793 | if (elf_tdata (ibfd)->phdr == NULL) | |
5794 | return TRUE; | |
5795 | ||
5796 | if (ibfd->xvec == obfd->xvec) | |
5797 | { | |
cb3ff1e5 NC |
5798 | /* Check to see if any sections in the input BFD |
5799 | covered by ELF program header have changed. */ | |
d55ce4e2 | 5800 | Elf_Internal_Phdr *segment; |
84d1d650 L |
5801 | asection *section, *osec; |
5802 | unsigned int i, num_segments; | |
5803 | Elf_Internal_Shdr *this_hdr; | |
5804 | ||
5805 | /* Initialize the segment mark field. */ | |
5806 | for (section = obfd->sections; section != NULL; | |
5807 | section = section->next) | |
5808 | section->segment_mark = FALSE; | |
5809 | ||
5810 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
5811 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5812 | i < num_segments; | |
5813 | i++, segment++) | |
5814 | { | |
5f6999aa NC |
5815 | /* PR binutils/3535. The Solaris linker always sets the p_paddr |
5816 | and p_memsz fields of special segments (DYNAMIC, INTERP) to 0 | |
5817 | which severly confuses things, so always regenerate the segment | |
5818 | map in this case. */ | |
5819 | if (segment->p_paddr == 0 | |
5820 | && segment->p_memsz == 0 | |
5821 | && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC)) | |
cb3ff1e5 | 5822 | goto rewrite; |
5f6999aa | 5823 | |
84d1d650 L |
5824 | for (section = ibfd->sections; |
5825 | section != NULL; section = section->next) | |
5826 | { | |
5827 | /* We mark the output section so that we know it comes | |
5828 | from the input BFD. */ | |
5829 | osec = section->output_section; | |
5830 | if (osec) | |
5831 | osec->segment_mark = TRUE; | |
5832 | ||
5833 | /* Check if this section is covered by the segment. */ | |
5834 | this_hdr = &(elf_section_data(section)->this_hdr); | |
5835 | if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment)) | |
5836 | { | |
5837 | /* FIXME: Check if its output section is changed or | |
5838 | removed. What else do we need to check? */ | |
5839 | if (osec == NULL | |
5840 | || section->flags != osec->flags | |
5841 | || section->lma != osec->lma | |
5842 | || section->vma != osec->vma | |
5843 | || section->size != osec->size | |
5844 | || section->rawsize != osec->rawsize | |
5845 | || section->alignment_power != osec->alignment_power) | |
5846 | goto rewrite; | |
5847 | } | |
5848 | } | |
5849 | } | |
5850 | ||
cb3ff1e5 | 5851 | /* Check to see if any output section do not come from the |
84d1d650 L |
5852 | input BFD. */ |
5853 | for (section = obfd->sections; section != NULL; | |
5854 | section = section->next) | |
5855 | { | |
5856 | if (section->segment_mark == FALSE) | |
5857 | goto rewrite; | |
5858 | else | |
5859 | section->segment_mark = FALSE; | |
5860 | } | |
5861 | ||
5862 | return copy_elf_program_header (ibfd, obfd); | |
5863 | } | |
5864 | ||
5865 | rewrite: | |
5866 | return rewrite_elf_program_header (ibfd, obfd); | |
5867 | } | |
5868 | ||
ccd2ec6a L |
5869 | /* Initialize private output section information from input section. */ |
5870 | ||
5871 | bfd_boolean | |
5872 | _bfd_elf_init_private_section_data (bfd *ibfd, | |
5873 | asection *isec, | |
5874 | bfd *obfd, | |
5875 | asection *osec, | |
5876 | struct bfd_link_info *link_info) | |
5877 | ||
5878 | { | |
5879 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5880 | bfd_boolean need_group = link_info == NULL || link_info->relocatable; | |
5881 | ||
5882 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5883 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
5884 | return TRUE; | |
5885 | ||
e843e0f8 | 5886 | /* Don't copy the output ELF section type from input if the |
d3fd4074 | 5887 | output BFD section flags have been set to something different. |
e843e0f8 L |
5888 | elf_fake_sections will set ELF section type based on BFD |
5889 | section flags. */ | |
42bb2e33 AM |
5890 | if (elf_section_type (osec) == SHT_NULL |
5891 | && (osec->flags == isec->flags || !osec->flags)) | |
5892 | elf_section_type (osec) = elf_section_type (isec); | |
d270463e L |
5893 | |
5894 | /* FIXME: Is this correct for all OS/PROC specific flags? */ | |
5895 | elf_section_flags (osec) |= (elf_section_flags (isec) | |
5896 | & (SHF_MASKOS | SHF_MASKPROC)); | |
ccd2ec6a L |
5897 | |
5898 | /* Set things up for objcopy and relocatable link. The output | |
5899 | SHT_GROUP section will have its elf_next_in_group pointing back | |
5900 | to the input group members. Ignore linker created group section. | |
5901 | See elfNN_ia64_object_p in elfxx-ia64.c. */ | |
ccd2ec6a L |
5902 | if (need_group) |
5903 | { | |
5904 | if (elf_sec_group (isec) == NULL | |
5905 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5906 | { | |
5907 | if (elf_section_flags (isec) & SHF_GROUP) | |
5908 | elf_section_flags (osec) |= SHF_GROUP; | |
5909 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5910 | elf_group_name (osec) = elf_group_name (isec); | |
5911 | } | |
5912 | } | |
5913 | ||
5914 | ihdr = &elf_section_data (isec)->this_hdr; | |
5915 | ||
5916 | /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We | |
5917 | don't use the output section of the linked-to section since it | |
5918 | may be NULL at this point. */ | |
5919 | if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0) | |
5920 | { | |
5921 | ohdr = &elf_section_data (osec)->this_hdr; | |
5922 | ohdr->sh_flags |= SHF_LINK_ORDER; | |
5923 | elf_linked_to_section (osec) = elf_linked_to_section (isec); | |
5924 | } | |
5925 | ||
5926 | osec->use_rela_p = isec->use_rela_p; | |
5927 | ||
5928 | return TRUE; | |
5929 | } | |
5930 | ||
252b5132 RH |
5931 | /* Copy private section information. This copies over the entsize |
5932 | field, and sometimes the info field. */ | |
5933 | ||
b34976b6 | 5934 | bfd_boolean |
217aa764 AM |
5935 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5936 | asection *isec, | |
5937 | bfd *obfd, | |
5938 | asection *osec) | |
252b5132 RH |
5939 | { |
5940 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5941 | ||
5942 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5943 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5944 | return TRUE; |
252b5132 | 5945 | |
252b5132 RH |
5946 | ihdr = &elf_section_data (isec)->this_hdr; |
5947 | ohdr = &elf_section_data (osec)->this_hdr; | |
5948 | ||
5949 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5950 | ||
5951 | if (ihdr->sh_type == SHT_SYMTAB | |
5952 | || ihdr->sh_type == SHT_DYNSYM | |
5953 | || ihdr->sh_type == SHT_GNU_verneed | |
5954 | || ihdr->sh_type == SHT_GNU_verdef) | |
5955 | ohdr->sh_info = ihdr->sh_info; | |
5956 | ||
ccd2ec6a L |
5957 | return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec, |
5958 | NULL); | |
252b5132 RH |
5959 | } |
5960 | ||
80fccad2 BW |
5961 | /* Copy private header information. */ |
5962 | ||
5963 | bfd_boolean | |
5964 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5965 | { | |
30288845 AM |
5966 | asection *isec; |
5967 | ||
80fccad2 BW |
5968 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5969 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5970 | return TRUE; | |
5971 | ||
5972 | /* Copy over private BFD data if it has not already been copied. | |
5973 | This must be done here, rather than in the copy_private_bfd_data | |
5974 | entry point, because the latter is called after the section | |
5975 | contents have been set, which means that the program headers have | |
5976 | already been worked out. */ | |
5977 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5978 | { | |
5979 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5980 | return FALSE; | |
5981 | } | |
5982 | ||
30288845 AM |
5983 | /* _bfd_elf_copy_private_section_data copied over the SHF_GROUP flag |
5984 | but this might be wrong if we deleted the group section. */ | |
5985 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
5986 | if (elf_section_type (isec) == SHT_GROUP | |
5987 | && isec->output_section == NULL) | |
5988 | { | |
5989 | asection *first = elf_next_in_group (isec); | |
5990 | asection *s = first; | |
5991 | while (s != NULL) | |
5992 | { | |
5993 | if (s->output_section != NULL) | |
5994 | { | |
5995 | elf_section_flags (s->output_section) &= ~SHF_GROUP; | |
5996 | elf_group_name (s->output_section) = NULL; | |
5997 | } | |
5998 | s = elf_next_in_group (s); | |
5999 | if (s == first) | |
6000 | break; | |
6001 | } | |
6002 | } | |
6003 | ||
80fccad2 BW |
6004 | return TRUE; |
6005 | } | |
6006 | ||
252b5132 RH |
6007 | /* Copy private symbol information. If this symbol is in a section |
6008 | which we did not map into a BFD section, try to map the section | |
6009 | index correctly. We use special macro definitions for the mapped | |
6010 | section indices; these definitions are interpreted by the | |
6011 | swap_out_syms function. */ | |
6012 | ||
9ad5cbcf AM |
6013 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
6014 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
6015 | #define MAP_STRTAB (SHN_HIOS + 3) | |
6016 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
6017 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 6018 | |
b34976b6 | 6019 | bfd_boolean |
217aa764 AM |
6020 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
6021 | asymbol *isymarg, | |
6022 | bfd *obfd, | |
6023 | asymbol *osymarg) | |
252b5132 RH |
6024 | { |
6025 | elf_symbol_type *isym, *osym; | |
6026 | ||
6027 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6028 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 6029 | return TRUE; |
252b5132 RH |
6030 | |
6031 | isym = elf_symbol_from (ibfd, isymarg); | |
6032 | osym = elf_symbol_from (obfd, osymarg); | |
6033 | ||
6034 | if (isym != NULL | |
6035 | && osym != NULL | |
6036 | && bfd_is_abs_section (isym->symbol.section)) | |
6037 | { | |
6038 | unsigned int shndx; | |
6039 | ||
6040 | shndx = isym->internal_elf_sym.st_shndx; | |
6041 | if (shndx == elf_onesymtab (ibfd)) | |
6042 | shndx = MAP_ONESYMTAB; | |
6043 | else if (shndx == elf_dynsymtab (ibfd)) | |
6044 | shndx = MAP_DYNSYMTAB; | |
6045 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
6046 | shndx = MAP_STRTAB; | |
6047 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
6048 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
6049 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
6050 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
6051 | osym->internal_elf_sym.st_shndx = shndx; |
6052 | } | |
6053 | ||
b34976b6 | 6054 | return TRUE; |
252b5132 RH |
6055 | } |
6056 | ||
6057 | /* Swap out the symbols. */ | |
6058 | ||
b34976b6 | 6059 | static bfd_boolean |
217aa764 AM |
6060 | swap_out_syms (bfd *abfd, |
6061 | struct bfd_strtab_hash **sttp, | |
6062 | int relocatable_p) | |
252b5132 | 6063 | { |
9c5bfbb7 | 6064 | const struct elf_backend_data *bed; |
079e9a2f AM |
6065 | int symcount; |
6066 | asymbol **syms; | |
6067 | struct bfd_strtab_hash *stt; | |
6068 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 6069 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 6070 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
6071 | bfd_byte *outbound_syms; |
6072 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
6073 | int idx; |
6074 | bfd_size_type amt; | |
174fd7f9 | 6075 | bfd_boolean name_local_sections; |
252b5132 RH |
6076 | |
6077 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 6078 | return FALSE; |
252b5132 | 6079 | |
c044fabd | 6080 | /* Dump out the symtabs. */ |
079e9a2f AM |
6081 | stt = _bfd_elf_stringtab_init (); |
6082 | if (stt == NULL) | |
b34976b6 | 6083 | return FALSE; |
252b5132 | 6084 | |
079e9a2f AM |
6085 | bed = get_elf_backend_data (abfd); |
6086 | symcount = bfd_get_symcount (abfd); | |
6087 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6088 | symtab_hdr->sh_type = SHT_SYMTAB; | |
6089 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
6090 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
6091 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 6092 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
6093 | |
6094 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
6095 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
6096 | ||
d0fb9a8d | 6097 | outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym); |
079e9a2f | 6098 | if (outbound_syms == NULL) |
5ed6aba4 NC |
6099 | { |
6100 | _bfd_stringtab_free (stt); | |
6101 | return FALSE; | |
6102 | } | |
217aa764 | 6103 | symtab_hdr->contents = outbound_syms; |
252b5132 | 6104 | |
9ad5cbcf AM |
6105 | outbound_shndx = NULL; |
6106 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
6107 | if (symtab_shndx_hdr->sh_name != 0) | |
6108 | { | |
6109 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
d0fb9a8d JJ |
6110 | outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount, |
6111 | sizeof (Elf_External_Sym_Shndx)); | |
9ad5cbcf | 6112 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
6113 | { |
6114 | _bfd_stringtab_free (stt); | |
6115 | return FALSE; | |
6116 | } | |
6117 | ||
9ad5cbcf AM |
6118 | symtab_shndx_hdr->contents = outbound_shndx; |
6119 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
6120 | symtab_shndx_hdr->sh_size = amt; | |
6121 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
6122 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
6123 | } | |
6124 | ||
589e6347 | 6125 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
6126 | { |
6127 | /* Fill in zeroth symbol and swap it out. */ | |
6128 | Elf_Internal_Sym sym; | |
6129 | sym.st_name = 0; | |
6130 | sym.st_value = 0; | |
6131 | sym.st_size = 0; | |
6132 | sym.st_info = 0; | |
6133 | sym.st_other = 0; | |
6134 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 6135 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6136 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6137 | if (outbound_shndx != NULL) |
6138 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6139 | } |
252b5132 | 6140 | |
174fd7f9 RS |
6141 | name_local_sections |
6142 | = (bed->elf_backend_name_local_section_symbols | |
6143 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
6144 | ||
079e9a2f AM |
6145 | syms = bfd_get_outsymbols (abfd); |
6146 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 6147 | { |
252b5132 | 6148 | Elf_Internal_Sym sym; |
079e9a2f AM |
6149 | bfd_vma value = syms[idx]->value; |
6150 | elf_symbol_type *type_ptr; | |
6151 | flagword flags = syms[idx]->flags; | |
6152 | int type; | |
252b5132 | 6153 | |
174fd7f9 RS |
6154 | if (!name_local_sections |
6155 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
6156 | { |
6157 | /* Local section symbols have no name. */ | |
6158 | sym.st_name = 0; | |
6159 | } | |
6160 | else | |
6161 | { | |
6162 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
6163 | syms[idx]->name, | |
b34976b6 | 6164 | TRUE, FALSE); |
079e9a2f | 6165 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
6166 | { |
6167 | _bfd_stringtab_free (stt); | |
6168 | return FALSE; | |
6169 | } | |
079e9a2f | 6170 | } |
252b5132 | 6171 | |
079e9a2f | 6172 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 6173 | |
079e9a2f AM |
6174 | if ((flags & BSF_SECTION_SYM) == 0 |
6175 | && bfd_is_com_section (syms[idx]->section)) | |
6176 | { | |
6177 | /* ELF common symbols put the alignment into the `value' field, | |
6178 | and the size into the `size' field. This is backwards from | |
6179 | how BFD handles it, so reverse it here. */ | |
6180 | sym.st_size = value; | |
6181 | if (type_ptr == NULL | |
6182 | || type_ptr->internal_elf_sym.st_value == 0) | |
6183 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
6184 | else | |
6185 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
6186 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
6187 | (abfd, syms[idx]->section); | |
6188 | } | |
6189 | else | |
6190 | { | |
6191 | asection *sec = syms[idx]->section; | |
6192 | int shndx; | |
252b5132 | 6193 | |
079e9a2f AM |
6194 | if (sec->output_section) |
6195 | { | |
6196 | value += sec->output_offset; | |
6197 | sec = sec->output_section; | |
6198 | } | |
589e6347 | 6199 | |
079e9a2f AM |
6200 | /* Don't add in the section vma for relocatable output. */ |
6201 | if (! relocatable_p) | |
6202 | value += sec->vma; | |
6203 | sym.st_value = value; | |
6204 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
6205 | ||
6206 | if (bfd_is_abs_section (sec) | |
6207 | && type_ptr != NULL | |
6208 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
6209 | { | |
6210 | /* This symbol is in a real ELF section which we did | |
6211 | not create as a BFD section. Undo the mapping done | |
6212 | by copy_private_symbol_data. */ | |
6213 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
6214 | switch (shndx) | |
6215 | { | |
6216 | case MAP_ONESYMTAB: | |
6217 | shndx = elf_onesymtab (abfd); | |
6218 | break; | |
6219 | case MAP_DYNSYMTAB: | |
6220 | shndx = elf_dynsymtab (abfd); | |
6221 | break; | |
6222 | case MAP_STRTAB: | |
6223 | shndx = elf_tdata (abfd)->strtab_section; | |
6224 | break; | |
6225 | case MAP_SHSTRTAB: | |
6226 | shndx = elf_tdata (abfd)->shstrtab_section; | |
6227 | break; | |
9ad5cbcf AM |
6228 | case MAP_SYM_SHNDX: |
6229 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
6230 | break; | |
079e9a2f AM |
6231 | default: |
6232 | break; | |
6233 | } | |
6234 | } | |
6235 | else | |
6236 | { | |
6237 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 6238 | |
079e9a2f AM |
6239 | if (shndx == -1) |
6240 | { | |
6241 | asection *sec2; | |
6242 | ||
6243 | /* Writing this would be a hell of a lot easier if | |
6244 | we had some decent documentation on bfd, and | |
6245 | knew what to expect of the library, and what to | |
6246 | demand of applications. For example, it | |
6247 | appears that `objcopy' might not set the | |
6248 | section of a symbol to be a section that is | |
6249 | actually in the output file. */ | |
6250 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
6251 | if (sec2 == NULL) |
6252 | { | |
6253 | _bfd_error_handler (_("\ | |
6254 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
6255 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
6256 | sec->name); | |
811072d8 | 6257 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 6258 | _bfd_stringtab_free (stt); |
589e6347 NC |
6259 | return FALSE; |
6260 | } | |
811072d8 | 6261 | |
079e9a2f AM |
6262 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
6263 | BFD_ASSERT (shndx != -1); | |
6264 | } | |
6265 | } | |
252b5132 | 6266 | |
079e9a2f AM |
6267 | sym.st_shndx = shndx; |
6268 | } | |
252b5132 | 6269 | |
13ae64f3 JJ |
6270 | if ((flags & BSF_THREAD_LOCAL) != 0) |
6271 | type = STT_TLS; | |
6272 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
6273 | type = STT_FUNC; |
6274 | else if ((flags & BSF_OBJECT) != 0) | |
6275 | type = STT_OBJECT; | |
d9352518 DB |
6276 | else if ((flags & BSF_RELC) != 0) |
6277 | type = STT_RELC; | |
6278 | else if ((flags & BSF_SRELC) != 0) | |
6279 | type = STT_SRELC; | |
079e9a2f AM |
6280 | else |
6281 | type = STT_NOTYPE; | |
252b5132 | 6282 | |
13ae64f3 JJ |
6283 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
6284 | type = STT_TLS; | |
6285 | ||
589e6347 | 6286 | /* Processor-specific types. */ |
079e9a2f AM |
6287 | if (type_ptr != NULL |
6288 | && bed->elf_backend_get_symbol_type) | |
6289 | type = ((*bed->elf_backend_get_symbol_type) | |
6290 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 6291 | |
079e9a2f AM |
6292 | if (flags & BSF_SECTION_SYM) |
6293 | { | |
6294 | if (flags & BSF_GLOBAL) | |
6295 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
6296 | else | |
6297 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
6298 | } | |
6299 | else if (bfd_is_com_section (syms[idx]->section)) | |
504b7d20 NC |
6300 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, |
6301 | #ifdef USE_STT_COMMON | |
6302 | type == STT_OBJECT ? STT_COMMON : | |
6303 | #endif | |
6304 | type); | |
079e9a2f AM |
6305 | else if (bfd_is_und_section (syms[idx]->section)) |
6306 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
6307 | ? STB_WEAK | |
6308 | : STB_GLOBAL), | |
6309 | type); | |
6310 | else if (flags & BSF_FILE) | |
6311 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
6312 | else | |
6313 | { | |
6314 | int bind = STB_LOCAL; | |
252b5132 | 6315 | |
079e9a2f AM |
6316 | if (flags & BSF_LOCAL) |
6317 | bind = STB_LOCAL; | |
6318 | else if (flags & BSF_WEAK) | |
6319 | bind = STB_WEAK; | |
6320 | else if (flags & BSF_GLOBAL) | |
6321 | bind = STB_GLOBAL; | |
252b5132 | 6322 | |
079e9a2f AM |
6323 | sym.st_info = ELF_ST_INFO (bind, type); |
6324 | } | |
252b5132 | 6325 | |
079e9a2f AM |
6326 | if (type_ptr != NULL) |
6327 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
6328 | else | |
6329 | sym.st_other = 0; | |
252b5132 | 6330 | |
9ad5cbcf | 6331 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 6332 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
6333 | if (outbound_shndx != NULL) |
6334 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 6335 | } |
252b5132 | 6336 | |
079e9a2f AM |
6337 | *sttp = stt; |
6338 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6339 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6340 | |
079e9a2f AM |
6341 | symstrtab_hdr->sh_flags = 0; |
6342 | symstrtab_hdr->sh_addr = 0; | |
6343 | symstrtab_hdr->sh_entsize = 0; | |
6344 | symstrtab_hdr->sh_link = 0; | |
6345 | symstrtab_hdr->sh_info = 0; | |
6346 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6347 | |
b34976b6 | 6348 | return TRUE; |
252b5132 RH |
6349 | } |
6350 | ||
6351 | /* Return the number of bytes required to hold the symtab vector. | |
6352 | ||
6353 | Note that we base it on the count plus 1, since we will null terminate | |
6354 | the vector allocated based on this size. However, the ELF symbol table | |
6355 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6356 | ||
6357 | long | |
217aa764 | 6358 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6359 | { |
6360 | long symcount; | |
6361 | long symtab_size; | |
6362 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6363 | ||
6364 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6365 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6366 | if (symcount > 0) | |
6367 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6368 | |
6369 | return symtab_size; | |
6370 | } | |
6371 | ||
6372 | long | |
217aa764 | 6373 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6374 | { |
6375 | long symcount; | |
6376 | long symtab_size; | |
6377 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6378 | ||
6379 | if (elf_dynsymtab (abfd) == 0) | |
6380 | { | |
6381 | bfd_set_error (bfd_error_invalid_operation); | |
6382 | return -1; | |
6383 | } | |
6384 | ||
6385 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6386 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6387 | if (symcount > 0) | |
6388 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6389 | |
6390 | return symtab_size; | |
6391 | } | |
6392 | ||
6393 | long | |
217aa764 AM |
6394 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6395 | sec_ptr asect) | |
252b5132 RH |
6396 | { |
6397 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6398 | } | |
6399 | ||
6400 | /* Canonicalize the relocs. */ | |
6401 | ||
6402 | long | |
217aa764 AM |
6403 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6404 | sec_ptr section, | |
6405 | arelent **relptr, | |
6406 | asymbol **symbols) | |
252b5132 RH |
6407 | { |
6408 | arelent *tblptr; | |
6409 | unsigned int i; | |
9c5bfbb7 | 6410 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6411 | |
b34976b6 | 6412 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6413 | return -1; |
6414 | ||
6415 | tblptr = section->relocation; | |
6416 | for (i = 0; i < section->reloc_count; i++) | |
6417 | *relptr++ = tblptr++; | |
6418 | ||
6419 | *relptr = NULL; | |
6420 | ||
6421 | return section->reloc_count; | |
6422 | } | |
6423 | ||
6424 | long | |
6cee3f79 | 6425 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6426 | { |
9c5bfbb7 | 6427 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6428 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6429 | |
6430 | if (symcount >= 0) | |
6431 | bfd_get_symcount (abfd) = symcount; | |
6432 | return symcount; | |
6433 | } | |
6434 | ||
6435 | long | |
217aa764 AM |
6436 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6437 | asymbol **allocation) | |
252b5132 | 6438 | { |
9c5bfbb7 | 6439 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6440 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6441 | |
6442 | if (symcount >= 0) | |
6443 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6444 | return symcount; | |
252b5132 RH |
6445 | } |
6446 | ||
8615f3f2 AM |
6447 | /* Return the size required for the dynamic reloc entries. Any loadable |
6448 | section that was actually installed in the BFD, and has type SHT_REL | |
6449 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6450 | dynamic reloc section. */ | |
252b5132 RH |
6451 | |
6452 | long | |
217aa764 | 6453 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6454 | { |
6455 | long ret; | |
6456 | asection *s; | |
6457 | ||
6458 | if (elf_dynsymtab (abfd) == 0) | |
6459 | { | |
6460 | bfd_set_error (bfd_error_invalid_operation); | |
6461 | return -1; | |
6462 | } | |
6463 | ||
6464 | ret = sizeof (arelent *); | |
6465 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6466 | if ((s->flags & SEC_LOAD) != 0 |
6467 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6468 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6469 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6470 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6471 | * sizeof (arelent *)); |
6472 | ||
6473 | return ret; | |
6474 | } | |
6475 | ||
8615f3f2 AM |
6476 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6477 | dynamic relocations as a single block, although they are actually | |
6478 | associated with particular sections; the interface, which was | |
6479 | designed for SunOS style shared libraries, expects that there is only | |
6480 | one set of dynamic relocs. Any loadable section that was actually | |
6481 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6482 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6483 | |
6484 | long | |
217aa764 AM |
6485 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6486 | arelent **storage, | |
6487 | asymbol **syms) | |
252b5132 | 6488 | { |
217aa764 | 6489 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6490 | asection *s; |
6491 | long ret; | |
6492 | ||
6493 | if (elf_dynsymtab (abfd) == 0) | |
6494 | { | |
6495 | bfd_set_error (bfd_error_invalid_operation); | |
6496 | return -1; | |
6497 | } | |
6498 | ||
6499 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6500 | ret = 0; | |
6501 | for (s = abfd->sections; s != NULL; s = s->next) | |
6502 | { | |
8615f3f2 AM |
6503 | if ((s->flags & SEC_LOAD) != 0 |
6504 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6505 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6506 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6507 | { | |
6508 | arelent *p; | |
6509 | long count, i; | |
6510 | ||
b34976b6 | 6511 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6512 | return -1; |
eea6121a | 6513 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6514 | p = s->relocation; |
6515 | for (i = 0; i < count; i++) | |
6516 | *storage++ = p++; | |
6517 | ret += count; | |
6518 | } | |
6519 | } | |
6520 | ||
6521 | *storage = NULL; | |
6522 | ||
6523 | return ret; | |
6524 | } | |
6525 | \f | |
6526 | /* Read in the version information. */ | |
6527 | ||
b34976b6 | 6528 | bfd_boolean |
fc0e6df6 | 6529 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6530 | { |
6531 | bfd_byte *contents = NULL; | |
fc0e6df6 PB |
6532 | unsigned int freeidx = 0; |
6533 | ||
6534 | if (elf_dynverref (abfd) != 0) | |
6535 | { | |
6536 | Elf_Internal_Shdr *hdr; | |
6537 | Elf_External_Verneed *everneed; | |
6538 | Elf_Internal_Verneed *iverneed; | |
6539 | unsigned int i; | |
d0fb9a8d | 6540 | bfd_byte *contents_end; |
fc0e6df6 PB |
6541 | |
6542 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6543 | ||
d0fb9a8d JJ |
6544 | elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info, |
6545 | sizeof (Elf_Internal_Verneed)); | |
fc0e6df6 PB |
6546 | if (elf_tdata (abfd)->verref == NULL) |
6547 | goto error_return; | |
6548 | ||
6549 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6550 | ||
6551 | contents = bfd_malloc (hdr->sh_size); | |
6552 | if (contents == NULL) | |
d0fb9a8d JJ |
6553 | { |
6554 | error_return_verref: | |
6555 | elf_tdata (abfd)->verref = NULL; | |
6556 | elf_tdata (abfd)->cverrefs = 0; | |
6557 | goto error_return; | |
6558 | } | |
fc0e6df6 PB |
6559 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
6560 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
d0fb9a8d | 6561 | goto error_return_verref; |
fc0e6df6 | 6562 | |
d0fb9a8d JJ |
6563 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed)) |
6564 | goto error_return_verref; | |
6565 | ||
6566 | BFD_ASSERT (sizeof (Elf_External_Verneed) | |
6567 | == sizeof (Elf_External_Vernaux)); | |
6568 | contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed); | |
fc0e6df6 PB |
6569 | everneed = (Elf_External_Verneed *) contents; |
6570 | iverneed = elf_tdata (abfd)->verref; | |
6571 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6572 | { | |
6573 | Elf_External_Vernaux *evernaux; | |
6574 | Elf_Internal_Vernaux *ivernaux; | |
6575 | unsigned int j; | |
6576 | ||
6577 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6578 | ||
6579 | iverneed->vn_bfd = abfd; | |
6580 | ||
6581 | iverneed->vn_filename = | |
6582 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6583 | iverneed->vn_file); | |
6584 | if (iverneed->vn_filename == NULL) | |
d0fb9a8d | 6585 | goto error_return_verref; |
fc0e6df6 | 6586 | |
d0fb9a8d JJ |
6587 | if (iverneed->vn_cnt == 0) |
6588 | iverneed->vn_auxptr = NULL; | |
6589 | else | |
6590 | { | |
6591 | iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt, | |
6592 | sizeof (Elf_Internal_Vernaux)); | |
6593 | if (iverneed->vn_auxptr == NULL) | |
6594 | goto error_return_verref; | |
6595 | } | |
6596 | ||
6597 | if (iverneed->vn_aux | |
6598 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6599 | goto error_return_verref; | |
fc0e6df6 PB |
6600 | |
6601 | evernaux = ((Elf_External_Vernaux *) | |
6602 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6603 | ivernaux = iverneed->vn_auxptr; | |
6604 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6605 | { | |
6606 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6607 | ||
6608 | ivernaux->vna_nodename = | |
6609 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6610 | ivernaux->vna_name); | |
6611 | if (ivernaux->vna_nodename == NULL) | |
d0fb9a8d | 6612 | goto error_return_verref; |
fc0e6df6 PB |
6613 | |
6614 | if (j + 1 < iverneed->vn_cnt) | |
6615 | ivernaux->vna_nextptr = ivernaux + 1; | |
6616 | else | |
6617 | ivernaux->vna_nextptr = NULL; | |
6618 | ||
d0fb9a8d JJ |
6619 | if (ivernaux->vna_next |
6620 | > (size_t) (contents_end - (bfd_byte *) evernaux)) | |
6621 | goto error_return_verref; | |
6622 | ||
fc0e6df6 PB |
6623 | evernaux = ((Elf_External_Vernaux *) |
6624 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6625 | ||
6626 | if (ivernaux->vna_other > freeidx) | |
6627 | freeidx = ivernaux->vna_other; | |
6628 | } | |
6629 | ||
6630 | if (i + 1 < hdr->sh_info) | |
6631 | iverneed->vn_nextref = iverneed + 1; | |
6632 | else | |
6633 | iverneed->vn_nextref = NULL; | |
6634 | ||
d0fb9a8d JJ |
6635 | if (iverneed->vn_next |
6636 | > (size_t) (contents_end - (bfd_byte *) everneed)) | |
6637 | goto error_return_verref; | |
6638 | ||
fc0e6df6 PB |
6639 | everneed = ((Elf_External_Verneed *) |
6640 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6641 | } | |
6642 | ||
6643 | free (contents); | |
6644 | contents = NULL; | |
6645 | } | |
252b5132 RH |
6646 | |
6647 | if (elf_dynverdef (abfd) != 0) | |
6648 | { | |
6649 | Elf_Internal_Shdr *hdr; | |
6650 | Elf_External_Verdef *everdef; | |
6651 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6652 | Elf_Internal_Verdef *iverdefarr; |
6653 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6654 | unsigned int i; |
062e2358 | 6655 | unsigned int maxidx; |
d0fb9a8d | 6656 | bfd_byte *contents_end_def, *contents_end_aux; |
252b5132 RH |
6657 | |
6658 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6659 | ||
217aa764 | 6660 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6661 | if (contents == NULL) |
6662 | goto error_return; | |
6663 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6664 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6665 | goto error_return; |
6666 | ||
d0fb9a8d JJ |
6667 | if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef)) |
6668 | goto error_return; | |
6669 | ||
6670 | BFD_ASSERT (sizeof (Elf_External_Verdef) | |
6671 | >= sizeof (Elf_External_Verdaux)); | |
6672 | contents_end_def = contents + hdr->sh_size | |
6673 | - sizeof (Elf_External_Verdef); | |
6674 | contents_end_aux = contents + hdr->sh_size | |
6675 | - sizeof (Elf_External_Verdaux); | |
6676 | ||
f631889e UD |
6677 | /* We know the number of entries in the section but not the maximum |
6678 | index. Therefore we have to run through all entries and find | |
6679 | the maximum. */ | |
252b5132 | 6680 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6681 | maxidx = 0; |
6682 | for (i = 0; i < hdr->sh_info; ++i) | |
6683 | { | |
6684 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6685 | ||
062e2358 AM |
6686 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6687 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e | 6688 | |
d0fb9a8d JJ |
6689 | if (iverdefmem.vd_next |
6690 | > (size_t) (contents_end_def - (bfd_byte *) everdef)) | |
6691 | goto error_return; | |
6692 | ||
f631889e UD |
6693 | everdef = ((Elf_External_Verdef *) |
6694 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6695 | } | |
6696 | ||
fc0e6df6 PB |
6697 | if (default_imported_symver) |
6698 | { | |
6699 | if (freeidx > maxidx) | |
6700 | maxidx = ++freeidx; | |
6701 | else | |
6702 | freeidx = ++maxidx; | |
6703 | } | |
d0fb9a8d JJ |
6704 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx, |
6705 | sizeof (Elf_Internal_Verdef)); | |
f631889e UD |
6706 | if (elf_tdata (abfd)->verdef == NULL) |
6707 | goto error_return; | |
6708 | ||
6709 | elf_tdata (abfd)->cverdefs = maxidx; | |
6710 | ||
6711 | everdef = (Elf_External_Verdef *) contents; | |
6712 | iverdefarr = elf_tdata (abfd)->verdef; | |
6713 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6714 | { |
6715 | Elf_External_Verdaux *everdaux; | |
6716 | Elf_Internal_Verdaux *iverdaux; | |
6717 | unsigned int j; | |
6718 | ||
f631889e UD |
6719 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6720 | ||
d0fb9a8d JJ |
6721 | if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0) |
6722 | { | |
6723 | error_return_verdef: | |
6724 | elf_tdata (abfd)->verdef = NULL; | |
6725 | elf_tdata (abfd)->cverdefs = 0; | |
6726 | goto error_return; | |
6727 | } | |
6728 | ||
f631889e UD |
6729 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; |
6730 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6731 | |
6732 | iverdef->vd_bfd = abfd; | |
6733 | ||
d0fb9a8d JJ |
6734 | if (iverdef->vd_cnt == 0) |
6735 | iverdef->vd_auxptr = NULL; | |
6736 | else | |
6737 | { | |
6738 | iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt, | |
6739 | sizeof (Elf_Internal_Verdaux)); | |
6740 | if (iverdef->vd_auxptr == NULL) | |
6741 | goto error_return_verdef; | |
6742 | } | |
6743 | ||
6744 | if (iverdef->vd_aux | |
6745 | > (size_t) (contents_end_aux - (bfd_byte *) everdef)) | |
6746 | goto error_return_verdef; | |
252b5132 RH |
6747 | |
6748 | everdaux = ((Elf_External_Verdaux *) | |
6749 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6750 | iverdaux = iverdef->vd_auxptr; | |
6751 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6752 | { | |
6753 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6754 | ||
6755 | iverdaux->vda_nodename = | |
6756 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6757 | iverdaux->vda_name); | |
6758 | if (iverdaux->vda_nodename == NULL) | |
d0fb9a8d | 6759 | goto error_return_verdef; |
252b5132 RH |
6760 | |
6761 | if (j + 1 < iverdef->vd_cnt) | |
6762 | iverdaux->vda_nextptr = iverdaux + 1; | |
6763 | else | |
6764 | iverdaux->vda_nextptr = NULL; | |
6765 | ||
d0fb9a8d JJ |
6766 | if (iverdaux->vda_next |
6767 | > (size_t) (contents_end_aux - (bfd_byte *) everdaux)) | |
6768 | goto error_return_verdef; | |
6769 | ||
252b5132 RH |
6770 | everdaux = ((Elf_External_Verdaux *) |
6771 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6772 | } | |
6773 | ||
d0fb9a8d JJ |
6774 | if (iverdef->vd_cnt) |
6775 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
252b5132 | 6776 | |
d0fb9a8d | 6777 | if ((size_t) (iverdef - iverdefarr) + 1 < maxidx) |
252b5132 RH |
6778 | iverdef->vd_nextdef = iverdef + 1; |
6779 | else | |
6780 | iverdef->vd_nextdef = NULL; | |
6781 | ||
6782 | everdef = ((Elf_External_Verdef *) | |
6783 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6784 | } | |
6785 | ||
6786 | free (contents); | |
6787 | contents = NULL; | |
6788 | } | |
fc0e6df6 | 6789 | else if (default_imported_symver) |
252b5132 | 6790 | { |
fc0e6df6 PB |
6791 | if (freeidx < 3) |
6792 | freeidx = 3; | |
6793 | else | |
6794 | freeidx++; | |
252b5132 | 6795 | |
d0fb9a8d JJ |
6796 | elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx, |
6797 | sizeof (Elf_Internal_Verdef)); | |
fc0e6df6 | 6798 | if (elf_tdata (abfd)->verdef == NULL) |
252b5132 RH |
6799 | goto error_return; |
6800 | ||
fc0e6df6 PB |
6801 | elf_tdata (abfd)->cverdefs = freeidx; |
6802 | } | |
252b5132 | 6803 | |
fc0e6df6 PB |
6804 | /* Create a default version based on the soname. */ |
6805 | if (default_imported_symver) | |
6806 | { | |
6807 | Elf_Internal_Verdef *iverdef; | |
6808 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6809 | |
fc0e6df6 | 6810 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6811 | |
fc0e6df6 PB |
6812 | iverdef->vd_version = VER_DEF_CURRENT; |
6813 | iverdef->vd_flags = 0; | |
6814 | iverdef->vd_ndx = freeidx; | |
6815 | iverdef->vd_cnt = 1; | |
252b5132 | 6816 | |
fc0e6df6 | 6817 | iverdef->vd_bfd = abfd; |
252b5132 | 6818 | |
fc0e6df6 PB |
6819 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6820 | if (iverdef->vd_nodename == NULL) | |
d0fb9a8d | 6821 | goto error_return_verdef; |
fc0e6df6 | 6822 | iverdef->vd_nextdef = NULL; |
d0fb9a8d JJ |
6823 | iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux)); |
6824 | if (iverdef->vd_auxptr == NULL) | |
6825 | goto error_return_verdef; | |
252b5132 | 6826 | |
fc0e6df6 PB |
6827 | iverdaux = iverdef->vd_auxptr; |
6828 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6829 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6830 | } |
6831 | ||
b34976b6 | 6832 | return TRUE; |
252b5132 RH |
6833 | |
6834 | error_return: | |
5ed6aba4 | 6835 | if (contents != NULL) |
252b5132 | 6836 | free (contents); |
b34976b6 | 6837 | return FALSE; |
252b5132 RH |
6838 | } |
6839 | \f | |
6840 | asymbol * | |
217aa764 | 6841 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6842 | { |
6843 | elf_symbol_type *newsym; | |
dc810e39 | 6844 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6845 | |
217aa764 | 6846 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6847 | if (!newsym) |
6848 | return NULL; | |
6849 | else | |
6850 | { | |
6851 | newsym->symbol.the_bfd = abfd; | |
6852 | return &newsym->symbol; | |
6853 | } | |
6854 | } | |
6855 | ||
6856 | void | |
217aa764 AM |
6857 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6858 | asymbol *symbol, | |
6859 | symbol_info *ret) | |
252b5132 RH |
6860 | { |
6861 | bfd_symbol_info (symbol, ret); | |
6862 | } | |
6863 | ||
6864 | /* Return whether a symbol name implies a local symbol. Most targets | |
6865 | use this function for the is_local_label_name entry point, but some | |
6866 | override it. */ | |
6867 | ||
b34976b6 | 6868 | bfd_boolean |
217aa764 AM |
6869 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6870 | const char *name) | |
252b5132 RH |
6871 | { |
6872 | /* Normal local symbols start with ``.L''. */ | |
6873 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6874 | return TRUE; |
252b5132 RH |
6875 | |
6876 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6877 | DWARF debugging symbols starting with ``..''. */ | |
6878 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6879 | return TRUE; |
252b5132 RH |
6880 | |
6881 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6882 | emitting DWARF debugging output. I suspect this is actually a | |
6883 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6884 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6885 | underscore to be emitted on some ELF targets). For ease of use, | |
6886 | we treat such symbols as local. */ | |
6887 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6888 | return TRUE; |
252b5132 | 6889 | |
b34976b6 | 6890 | return FALSE; |
252b5132 RH |
6891 | } |
6892 | ||
6893 | alent * | |
217aa764 AM |
6894 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6895 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6896 | { |
6897 | abort (); | |
6898 | return NULL; | |
6899 | } | |
6900 | ||
b34976b6 | 6901 | bfd_boolean |
217aa764 AM |
6902 | _bfd_elf_set_arch_mach (bfd *abfd, |
6903 | enum bfd_architecture arch, | |
6904 | unsigned long machine) | |
252b5132 RH |
6905 | { |
6906 | /* If this isn't the right architecture for this backend, and this | |
6907 | isn't the generic backend, fail. */ | |
6908 | if (arch != get_elf_backend_data (abfd)->arch | |
6909 | && arch != bfd_arch_unknown | |
6910 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6911 | return FALSE; |
252b5132 RH |
6912 | |
6913 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6914 | } | |
6915 | ||
d1fad7c6 NC |
6916 | /* Find the function to a particular section and offset, |
6917 | for error reporting. */ | |
252b5132 | 6918 | |
b34976b6 | 6919 | static bfd_boolean |
217aa764 AM |
6920 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6921 | asection *section, | |
6922 | asymbol **symbols, | |
6923 | bfd_vma offset, | |
6924 | const char **filename_ptr, | |
6925 | const char **functionname_ptr) | |
252b5132 | 6926 | { |
252b5132 | 6927 | const char *filename; |
57426232 | 6928 | asymbol *func, *file; |
252b5132 RH |
6929 | bfd_vma low_func; |
6930 | asymbol **p; | |
57426232 JB |
6931 | /* ??? Given multiple file symbols, it is impossible to reliably |
6932 | choose the right file name for global symbols. File symbols are | |
6933 | local symbols, and thus all file symbols must sort before any | |
6934 | global symbols. The ELF spec may be interpreted to say that a | |
6935 | file symbol must sort before other local symbols, but currently | |
6936 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6937 | make a better choice of file name for local symbols by ignoring | |
6938 | file symbols appearing after a given local symbol. */ | |
6939 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6940 | |
252b5132 RH |
6941 | filename = NULL; |
6942 | func = NULL; | |
57426232 | 6943 | file = NULL; |
252b5132 | 6944 | low_func = 0; |
57426232 | 6945 | state = nothing_seen; |
252b5132 RH |
6946 | |
6947 | for (p = symbols; *p != NULL; p++) | |
6948 | { | |
6949 | elf_symbol_type *q; | |
6950 | ||
6951 | q = (elf_symbol_type *) *p; | |
6952 | ||
252b5132 RH |
6953 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6954 | { | |
6955 | default: | |
6956 | break; | |
6957 | case STT_FILE: | |
57426232 JB |
6958 | file = &q->symbol; |
6959 | if (state == symbol_seen) | |
6960 | state = file_after_symbol_seen; | |
6961 | continue; | |
252b5132 RH |
6962 | case STT_NOTYPE: |
6963 | case STT_FUNC: | |
6b40fcba | 6964 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6965 | && q->symbol.value >= low_func |
6966 | && q->symbol.value <= offset) | |
6967 | { | |
6968 | func = (asymbol *) q; | |
6969 | low_func = q->symbol.value; | |
a1923858 AM |
6970 | filename = NULL; |
6971 | if (file != NULL | |
6972 | && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL | |
6973 | || state != file_after_symbol_seen)) | |
57426232 | 6974 | filename = bfd_asymbol_name (file); |
252b5132 RH |
6975 | } |
6976 | break; | |
6977 | } | |
57426232 JB |
6978 | if (state == nothing_seen) |
6979 | state = symbol_seen; | |
252b5132 RH |
6980 | } |
6981 | ||
6982 | if (func == NULL) | |
b34976b6 | 6983 | return FALSE; |
252b5132 | 6984 | |
d1fad7c6 NC |
6985 | if (filename_ptr) |
6986 | *filename_ptr = filename; | |
6987 | if (functionname_ptr) | |
6988 | *functionname_ptr = bfd_asymbol_name (func); | |
6989 | ||
b34976b6 | 6990 | return TRUE; |
d1fad7c6 NC |
6991 | } |
6992 | ||
6993 | /* Find the nearest line to a particular section and offset, | |
6994 | for error reporting. */ | |
6995 | ||
b34976b6 | 6996 | bfd_boolean |
217aa764 AM |
6997 | _bfd_elf_find_nearest_line (bfd *abfd, |
6998 | asection *section, | |
6999 | asymbol **symbols, | |
7000 | bfd_vma offset, | |
7001 | const char **filename_ptr, | |
7002 | const char **functionname_ptr, | |
7003 | unsigned int *line_ptr) | |
d1fad7c6 | 7004 | { |
b34976b6 | 7005 | bfd_boolean found; |
d1fad7c6 NC |
7006 | |
7007 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7008 | filename_ptr, functionname_ptr, |
7009 | line_ptr)) | |
d1fad7c6 NC |
7010 | { |
7011 | if (!*functionname_ptr) | |
4e8a9624 AM |
7012 | elf_find_function (abfd, section, symbols, offset, |
7013 | *filename_ptr ? NULL : filename_ptr, | |
7014 | functionname_ptr); | |
7015 | ||
b34976b6 | 7016 | return TRUE; |
d1fad7c6 NC |
7017 | } |
7018 | ||
7019 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
7020 | filename_ptr, functionname_ptr, |
7021 | line_ptr, 0, | |
7022 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
7023 | { |
7024 | if (!*functionname_ptr) | |
4e8a9624 AM |
7025 | elf_find_function (abfd, section, symbols, offset, |
7026 | *filename_ptr ? NULL : filename_ptr, | |
7027 | functionname_ptr); | |
7028 | ||
b34976b6 | 7029 | return TRUE; |
d1fad7c6 NC |
7030 | } |
7031 | ||
7032 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
7033 | &found, filename_ptr, |
7034 | functionname_ptr, line_ptr, | |
7035 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 7036 | return FALSE; |
dc43ada5 | 7037 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 7038 | return TRUE; |
d1fad7c6 NC |
7039 | |
7040 | if (symbols == NULL) | |
b34976b6 | 7041 | return FALSE; |
d1fad7c6 NC |
7042 | |
7043 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 7044 | filename_ptr, functionname_ptr)) |
b34976b6 | 7045 | return FALSE; |
d1fad7c6 | 7046 | |
252b5132 | 7047 | *line_ptr = 0; |
b34976b6 | 7048 | return TRUE; |
252b5132 RH |
7049 | } |
7050 | ||
5420f73d L |
7051 | /* Find the line for a symbol. */ |
7052 | ||
7053 | bfd_boolean | |
7054 | _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol, | |
7055 | const char **filename_ptr, unsigned int *line_ptr) | |
7056 | { | |
7057 | return _bfd_dwarf2_find_line (abfd, symbols, symbol, | |
7058 | filename_ptr, line_ptr, 0, | |
7059 | &elf_tdata (abfd)->dwarf2_find_line_info); | |
7060 | } | |
7061 | ||
4ab527b0 FF |
7062 | /* After a call to bfd_find_nearest_line, successive calls to |
7063 | bfd_find_inliner_info can be used to get source information about | |
7064 | each level of function inlining that terminated at the address | |
7065 | passed to bfd_find_nearest_line. Currently this is only supported | |
7066 | for DWARF2 with appropriate DWARF3 extensions. */ | |
7067 | ||
7068 | bfd_boolean | |
7069 | _bfd_elf_find_inliner_info (bfd *abfd, | |
7070 | const char **filename_ptr, | |
7071 | const char **functionname_ptr, | |
7072 | unsigned int *line_ptr) | |
7073 | { | |
7074 | bfd_boolean found; | |
7075 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
7076 | functionname_ptr, line_ptr, | |
7077 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
7078 | return found; | |
7079 | } | |
7080 | ||
252b5132 | 7081 | int |
a6b96beb | 7082 | _bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 7083 | { |
8ded5a0f AM |
7084 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7085 | int ret = bed->s->sizeof_ehdr; | |
252b5132 | 7086 | |
a6b96beb | 7087 | if (!info->relocatable) |
8ded5a0f | 7088 | { |
62d7a5f6 | 7089 | bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size; |
8ded5a0f | 7090 | |
62d7a5f6 AM |
7091 | if (phdr_size == (bfd_size_type) -1) |
7092 | { | |
7093 | struct elf_segment_map *m; | |
7094 | ||
7095 | phdr_size = 0; | |
7096 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
7097 | phdr_size += bed->s->sizeof_phdr; | |
8ded5a0f | 7098 | |
62d7a5f6 AM |
7099 | if (phdr_size == 0) |
7100 | phdr_size = get_program_header_size (abfd, info); | |
7101 | } | |
8ded5a0f AM |
7102 | |
7103 | elf_tdata (abfd)->program_header_size = phdr_size; | |
7104 | ret += phdr_size; | |
7105 | } | |
7106 | ||
252b5132 RH |
7107 | return ret; |
7108 | } | |
7109 | ||
b34976b6 | 7110 | bfd_boolean |
217aa764 AM |
7111 | _bfd_elf_set_section_contents (bfd *abfd, |
7112 | sec_ptr section, | |
0f867abe | 7113 | const void *location, |
217aa764 AM |
7114 | file_ptr offset, |
7115 | bfd_size_type count) | |
252b5132 RH |
7116 | { |
7117 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 7118 | bfd_signed_vma pos; |
252b5132 RH |
7119 | |
7120 | if (! abfd->output_has_begun | |
217aa764 | 7121 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 7122 | return FALSE; |
252b5132 RH |
7123 | |
7124 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
7125 | pos = hdr->sh_offset + offset; |
7126 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
7127 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 7128 | return FALSE; |
252b5132 | 7129 | |
b34976b6 | 7130 | return TRUE; |
252b5132 RH |
7131 | } |
7132 | ||
7133 | void | |
217aa764 AM |
7134 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
7135 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
7136 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
7137 | { |
7138 | abort (); | |
7139 | } | |
7140 | ||
252b5132 RH |
7141 | /* Try to convert a non-ELF reloc into an ELF one. */ |
7142 | ||
b34976b6 | 7143 | bfd_boolean |
217aa764 | 7144 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 7145 | { |
c044fabd | 7146 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
7147 | |
7148 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
7149 | { | |
7150 | bfd_reloc_code_real_type code; | |
7151 | reloc_howto_type *howto; | |
7152 | ||
7153 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 7154 | equivalent ELF reloc. */ |
252b5132 RH |
7155 | |
7156 | if (areloc->howto->pc_relative) | |
7157 | { | |
7158 | switch (areloc->howto->bitsize) | |
7159 | { | |
7160 | case 8: | |
7161 | code = BFD_RELOC_8_PCREL; | |
7162 | break; | |
7163 | case 12: | |
7164 | code = BFD_RELOC_12_PCREL; | |
7165 | break; | |
7166 | case 16: | |
7167 | code = BFD_RELOC_16_PCREL; | |
7168 | break; | |
7169 | case 24: | |
7170 | code = BFD_RELOC_24_PCREL; | |
7171 | break; | |
7172 | case 32: | |
7173 | code = BFD_RELOC_32_PCREL; | |
7174 | break; | |
7175 | case 64: | |
7176 | code = BFD_RELOC_64_PCREL; | |
7177 | break; | |
7178 | default: | |
7179 | goto fail; | |
7180 | } | |
7181 | ||
7182 | howto = bfd_reloc_type_lookup (abfd, code); | |
7183 | ||
7184 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
7185 | { | |
7186 | if (howto->pcrel_offset) | |
7187 | areloc->addend += areloc->address; | |
7188 | else | |
7189 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
7190 | } | |
7191 | } | |
7192 | else | |
7193 | { | |
7194 | switch (areloc->howto->bitsize) | |
7195 | { | |
7196 | case 8: | |
7197 | code = BFD_RELOC_8; | |
7198 | break; | |
7199 | case 14: | |
7200 | code = BFD_RELOC_14; | |
7201 | break; | |
7202 | case 16: | |
7203 | code = BFD_RELOC_16; | |
7204 | break; | |
7205 | case 26: | |
7206 | code = BFD_RELOC_26; | |
7207 | break; | |
7208 | case 32: | |
7209 | code = BFD_RELOC_32; | |
7210 | break; | |
7211 | case 64: | |
7212 | code = BFD_RELOC_64; | |
7213 | break; | |
7214 | default: | |
7215 | goto fail; | |
7216 | } | |
7217 | ||
7218 | howto = bfd_reloc_type_lookup (abfd, code); | |
7219 | } | |
7220 | ||
7221 | if (howto) | |
7222 | areloc->howto = howto; | |
7223 | else | |
7224 | goto fail; | |
7225 | } | |
7226 | ||
b34976b6 | 7227 | return TRUE; |
252b5132 RH |
7228 | |
7229 | fail: | |
7230 | (*_bfd_error_handler) | |
d003868e AM |
7231 | (_("%B: unsupported relocation type %s"), |
7232 | abfd, areloc->howto->name); | |
252b5132 | 7233 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 7234 | return FALSE; |
252b5132 RH |
7235 | } |
7236 | ||
b34976b6 | 7237 | bfd_boolean |
217aa764 | 7238 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
7239 | { |
7240 | if (bfd_get_format (abfd) == bfd_object) | |
7241 | { | |
b25e3d87 | 7242 | if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL) |
2b0f7ef9 | 7243 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 7244 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
7245 | } |
7246 | ||
7247 | return _bfd_generic_close_and_cleanup (abfd); | |
7248 | } | |
7249 | ||
7250 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
7251 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
7252 | range-checking to interfere. There is nothing else to do in processing | |
7253 | this reloc. */ | |
7254 | ||
7255 | bfd_reloc_status_type | |
217aa764 AM |
7256 | _bfd_elf_rel_vtable_reloc_fn |
7257 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 7258 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
7259 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
7260 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
7261 | { |
7262 | return bfd_reloc_ok; | |
7263 | } | |
252b5132 RH |
7264 | \f |
7265 | /* Elf core file support. Much of this only works on native | |
7266 | toolchains, since we rely on knowing the | |
7267 | machine-dependent procfs structure in order to pick | |
c044fabd | 7268 | out details about the corefile. */ |
252b5132 RH |
7269 | |
7270 | #ifdef HAVE_SYS_PROCFS_H | |
7271 | # include <sys/procfs.h> | |
7272 | #endif | |
7273 | ||
c044fabd | 7274 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
7275 | |
7276 | static int | |
217aa764 | 7277 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
7278 | { |
7279 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
7280 | + (elf_tdata (abfd)->core_pid)); | |
7281 | } | |
7282 | ||
252b5132 RH |
7283 | /* If there isn't a section called NAME, make one, using |
7284 | data from SECT. Note, this function will generate a | |
7285 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 7286 | overwrite it. */ |
252b5132 | 7287 | |
b34976b6 | 7288 | static bfd_boolean |
217aa764 | 7289 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 7290 | { |
c044fabd | 7291 | asection *sect2; |
252b5132 RH |
7292 | |
7293 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 7294 | return TRUE; |
252b5132 | 7295 | |
117ed4f8 | 7296 | sect2 = bfd_make_section_with_flags (abfd, name, sect->flags); |
252b5132 | 7297 | if (sect2 == NULL) |
b34976b6 | 7298 | return FALSE; |
252b5132 | 7299 | |
eea6121a | 7300 | sect2->size = sect->size; |
252b5132 | 7301 | sect2->filepos = sect->filepos; |
252b5132 | 7302 | sect2->alignment_power = sect->alignment_power; |
b34976b6 | 7303 | return TRUE; |
252b5132 RH |
7304 | } |
7305 | ||
bb0082d6 AM |
7306 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
7307 | actually creates up to two pseudosections: | |
7308 | - For the single-threaded case, a section named NAME, unless | |
7309 | such a section already exists. | |
7310 | - For the multi-threaded case, a section named "NAME/PID", where | |
7311 | PID is elfcore_make_pid (abfd). | |
7312 | Both pseudosections have identical contents. */ | |
b34976b6 | 7313 | bfd_boolean |
217aa764 AM |
7314 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
7315 | char *name, | |
7316 | size_t size, | |
7317 | ufile_ptr filepos) | |
bb0082d6 AM |
7318 | { |
7319 | char buf[100]; | |
7320 | char *threaded_name; | |
d4c88bbb | 7321 | size_t len; |
bb0082d6 AM |
7322 | asection *sect; |
7323 | ||
7324 | /* Build the section name. */ | |
7325 | ||
7326 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 7327 | len = strlen (buf) + 1; |
217aa764 | 7328 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 7329 | if (threaded_name == NULL) |
b34976b6 | 7330 | return FALSE; |
d4c88bbb | 7331 | memcpy (threaded_name, buf, len); |
bb0082d6 | 7332 | |
117ed4f8 AM |
7333 | sect = bfd_make_section_anyway_with_flags (abfd, threaded_name, |
7334 | SEC_HAS_CONTENTS); | |
bb0082d6 | 7335 | if (sect == NULL) |
b34976b6 | 7336 | return FALSE; |
eea6121a | 7337 | sect->size = size; |
bb0082d6 | 7338 | sect->filepos = filepos; |
bb0082d6 AM |
7339 | sect->alignment_power = 2; |
7340 | ||
936e320b | 7341 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
7342 | } |
7343 | ||
252b5132 | 7344 | /* prstatus_t exists on: |
4a938328 | 7345 | solaris 2.5+ |
252b5132 RH |
7346 | linux 2.[01] + glibc |
7347 | unixware 4.2 | |
7348 | */ | |
7349 | ||
7350 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 7351 | |
b34976b6 | 7352 | static bfd_boolean |
217aa764 | 7353 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7354 | { |
eea6121a | 7355 | size_t size; |
7ee38065 | 7356 | int offset; |
252b5132 | 7357 | |
4a938328 MS |
7358 | if (note->descsz == sizeof (prstatus_t)) |
7359 | { | |
7360 | prstatus_t prstat; | |
252b5132 | 7361 | |
eea6121a | 7362 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7363 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 7364 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 7365 | |
fa49d224 NC |
7366 | /* Do not overwrite the core signal if it |
7367 | has already been set by another thread. */ | |
7368 | if (elf_tdata (abfd)->core_signal == 0) | |
7369 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 7370 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 7371 | |
4a938328 MS |
7372 | /* pr_who exists on: |
7373 | solaris 2.5+ | |
7374 | unixware 4.2 | |
7375 | pr_who doesn't exist on: | |
7376 | linux 2.[01] | |
7377 | */ | |
252b5132 | 7378 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 7379 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 7380 | #endif |
4a938328 | 7381 | } |
7ee38065 | 7382 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
7383 | else if (note->descsz == sizeof (prstatus32_t)) |
7384 | { | |
7385 | /* 64-bit host, 32-bit corefile */ | |
7386 | prstatus32_t prstat; | |
7387 | ||
eea6121a | 7388 | size = sizeof (prstat.pr_reg); |
7ee38065 | 7389 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
7390 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
7391 | ||
fa49d224 NC |
7392 | /* Do not overwrite the core signal if it |
7393 | has already been set by another thread. */ | |
7394 | if (elf_tdata (abfd)->core_signal == 0) | |
7395 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
7396 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
7397 | ||
7398 | /* pr_who exists on: | |
7399 | solaris 2.5+ | |
7400 | unixware 4.2 | |
7401 | pr_who doesn't exist on: | |
7402 | linux 2.[01] | |
7403 | */ | |
7ee38065 | 7404 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
7405 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
7406 | #endif | |
7407 | } | |
7ee38065 | 7408 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
7409 | else |
7410 | { | |
7411 | /* Fail - we don't know how to handle any other | |
7412 | note size (ie. data object type). */ | |
b34976b6 | 7413 | return TRUE; |
4a938328 | 7414 | } |
252b5132 | 7415 | |
bb0082d6 | 7416 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 7417 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 7418 | size, note->descpos + offset); |
252b5132 RH |
7419 | } |
7420 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
7421 | ||
bb0082d6 | 7422 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 7423 | static bfd_boolean |
217aa764 AM |
7424 | elfcore_make_note_pseudosection (bfd *abfd, |
7425 | char *name, | |
7426 | Elf_Internal_Note *note) | |
252b5132 | 7427 | { |
936e320b AM |
7428 | return _bfd_elfcore_make_pseudosection (abfd, name, |
7429 | note->descsz, note->descpos); | |
252b5132 RH |
7430 | } |
7431 | ||
ff08c6bb JB |
7432 | /* There isn't a consistent prfpregset_t across platforms, |
7433 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
7434 | data structure apart. */ |
7435 | ||
b34976b6 | 7436 | static bfd_boolean |
217aa764 | 7437 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7438 | { |
7439 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
7440 | } | |
7441 | ||
ff08c6bb | 7442 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
971d4640 | 7443 | type of NT_PRXFPREG. Just include the whole note's contents |
ff08c6bb | 7444 | literally. */ |
c044fabd | 7445 | |
b34976b6 | 7446 | static bfd_boolean |
217aa764 | 7447 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
7448 | { |
7449 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7450 | } | |
7451 | ||
97753bd5 AM |
7452 | static bfd_boolean |
7453 | elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note) | |
7454 | { | |
7455 | return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note); | |
7456 | } | |
7457 | ||
7458 | ||
252b5132 | 7459 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7460 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7461 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7462 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7463 | #endif | |
252b5132 RH |
7464 | #endif |
7465 | ||
7466 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7467 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7468 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7469 | typedef psinfo32_t elfcore_psinfo32_t; |
7470 | #endif | |
252b5132 RH |
7471 | #endif |
7472 | ||
252b5132 RH |
7473 | /* return a malloc'ed copy of a string at START which is at |
7474 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7475 | the copy will always have a terminating '\0'. */ |
252b5132 | 7476 | |
936e320b | 7477 | char * |
217aa764 | 7478 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7479 | { |
dc810e39 | 7480 | char *dups; |
c044fabd | 7481 | char *end = memchr (start, '\0', max); |
dc810e39 | 7482 | size_t len; |
252b5132 RH |
7483 | |
7484 | if (end == NULL) | |
7485 | len = max; | |
7486 | else | |
7487 | len = end - start; | |
7488 | ||
217aa764 | 7489 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7490 | if (dups == NULL) |
252b5132 RH |
7491 | return NULL; |
7492 | ||
dc810e39 AM |
7493 | memcpy (dups, start, len); |
7494 | dups[len] = '\0'; | |
252b5132 | 7495 | |
dc810e39 | 7496 | return dups; |
252b5132 RH |
7497 | } |
7498 | ||
bb0082d6 | 7499 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7500 | static bfd_boolean |
217aa764 | 7501 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7502 | { |
4a938328 MS |
7503 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7504 | { | |
7505 | elfcore_psinfo_t psinfo; | |
252b5132 | 7506 | |
7ee38065 | 7507 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7508 | |
4a938328 | 7509 | elf_tdata (abfd)->core_program |
936e320b AM |
7510 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7511 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7512 | |
4a938328 | 7513 | elf_tdata (abfd)->core_command |
936e320b AM |
7514 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7515 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7516 | } |
7ee38065 | 7517 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7518 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7519 | { | |
7520 | /* 64-bit host, 32-bit corefile */ | |
7521 | elfcore_psinfo32_t psinfo; | |
7522 | ||
7ee38065 | 7523 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7524 | |
4a938328 | 7525 | elf_tdata (abfd)->core_program |
936e320b AM |
7526 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7527 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7528 | |
7529 | elf_tdata (abfd)->core_command | |
936e320b AM |
7530 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7531 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7532 | } |
7533 | #endif | |
7534 | ||
7535 | else | |
7536 | { | |
7537 | /* Fail - we don't know how to handle any other | |
7538 | note size (ie. data object type). */ | |
b34976b6 | 7539 | return TRUE; |
4a938328 | 7540 | } |
252b5132 RH |
7541 | |
7542 | /* Note that for some reason, a spurious space is tacked | |
7543 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7544 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7545 | |
7546 | { | |
c044fabd | 7547 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7548 | int n = strlen (command); |
7549 | ||
7550 | if (0 < n && command[n - 1] == ' ') | |
7551 | command[n - 1] = '\0'; | |
7552 | } | |
7553 | ||
b34976b6 | 7554 | return TRUE; |
252b5132 RH |
7555 | } |
7556 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7557 | ||
252b5132 | 7558 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7559 | static bfd_boolean |
217aa764 | 7560 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7561 | { |
f572a39d AM |
7562 | if (note->descsz == sizeof (pstatus_t) |
7563 | #if defined (HAVE_PXSTATUS_T) | |
7564 | || note->descsz == sizeof (pxstatus_t) | |
7565 | #endif | |
7566 | ) | |
4a938328 MS |
7567 | { |
7568 | pstatus_t pstat; | |
252b5132 | 7569 | |
4a938328 | 7570 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7571 | |
4a938328 MS |
7572 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7573 | } | |
7ee38065 | 7574 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7575 | else if (note->descsz == sizeof (pstatus32_t)) |
7576 | { | |
7577 | /* 64-bit host, 32-bit corefile */ | |
7578 | pstatus32_t pstat; | |
252b5132 | 7579 | |
4a938328 | 7580 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7581 | |
4a938328 MS |
7582 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7583 | } | |
7584 | #endif | |
252b5132 RH |
7585 | /* Could grab some more details from the "representative" |
7586 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7587 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7588 | |
b34976b6 | 7589 | return TRUE; |
252b5132 RH |
7590 | } |
7591 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7592 | ||
252b5132 | 7593 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7594 | static bfd_boolean |
217aa764 | 7595 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7596 | { |
7597 | lwpstatus_t lwpstat; | |
7598 | char buf[100]; | |
c044fabd | 7599 | char *name; |
d4c88bbb | 7600 | size_t len; |
c044fabd | 7601 | asection *sect; |
252b5132 | 7602 | |
f572a39d AM |
7603 | if (note->descsz != sizeof (lwpstat) |
7604 | #if defined (HAVE_LWPXSTATUS_T) | |
7605 | && note->descsz != sizeof (lwpxstatus_t) | |
7606 | #endif | |
7607 | ) | |
b34976b6 | 7608 | return TRUE; |
252b5132 RH |
7609 | |
7610 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7611 | ||
7612 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7613 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7614 | ||
c044fabd | 7615 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7616 | |
7617 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7618 | len = strlen (buf) + 1; |
217aa764 | 7619 | name = bfd_alloc (abfd, len); |
252b5132 | 7620 | if (name == NULL) |
b34976b6 | 7621 | return FALSE; |
d4c88bbb | 7622 | memcpy (name, buf, len); |
252b5132 | 7623 | |
117ed4f8 | 7624 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7625 | if (sect == NULL) |
b34976b6 | 7626 | return FALSE; |
252b5132 RH |
7627 | |
7628 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7629 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7630 | sect->filepos = note->descpos |
7631 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7632 | #endif | |
7633 | ||
7634 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7635 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7636 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7637 | #endif | |
7638 | ||
252b5132 RH |
7639 | sect->alignment_power = 2; |
7640 | ||
7641 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7642 | return FALSE; |
252b5132 RH |
7643 | |
7644 | /* Make a ".reg2/999" section */ | |
7645 | ||
7646 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7647 | len = strlen (buf) + 1; |
217aa764 | 7648 | name = bfd_alloc (abfd, len); |
252b5132 | 7649 | if (name == NULL) |
b34976b6 | 7650 | return FALSE; |
d4c88bbb | 7651 | memcpy (name, buf, len); |
252b5132 | 7652 | |
117ed4f8 | 7653 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
252b5132 | 7654 | if (sect == NULL) |
b34976b6 | 7655 | return FALSE; |
252b5132 RH |
7656 | |
7657 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7658 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7659 | sect->filepos = note->descpos |
7660 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7661 | #endif | |
7662 | ||
7663 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7664 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7665 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7666 | #endif | |
7667 | ||
252b5132 RH |
7668 | sect->alignment_power = 2; |
7669 | ||
936e320b | 7670 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7671 | } |
7672 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7673 | ||
b34976b6 | 7674 | static bfd_boolean |
217aa764 | 7675 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7676 | { |
7677 | char buf[30]; | |
c044fabd | 7678 | char *name; |
d4c88bbb | 7679 | size_t len; |
c044fabd | 7680 | asection *sect; |
4a6636fb PA |
7681 | int type; |
7682 | int is_active_thread; | |
7683 | bfd_vma base_addr; | |
16e9c715 | 7684 | |
4a6636fb | 7685 | if (note->descsz < 728) |
b34976b6 | 7686 | return TRUE; |
16e9c715 | 7687 | |
4a6636fb PA |
7688 | if (! CONST_STRNEQ (note->namedata, "win32")) |
7689 | return TRUE; | |
7690 | ||
7691 | type = bfd_get_32 (abfd, note->descdata); | |
c044fabd | 7692 | |
4a6636fb | 7693 | switch (type) |
16e9c715 | 7694 | { |
4a6636fb | 7695 | case 1 /* NOTE_INFO_PROCESS */: |
16e9c715 | 7696 | /* FIXME: need to add ->core_command. */ |
4a6636fb PA |
7697 | /* process_info.pid */ |
7698 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8); | |
7699 | /* process_info.signal */ | |
7700 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12); | |
c044fabd | 7701 | break; |
16e9c715 | 7702 | |
4a6636fb | 7703 | case 2 /* NOTE_INFO_THREAD */: |
16e9c715 | 7704 | /* Make a ".reg/999" section. */ |
4a6636fb PA |
7705 | /* thread_info.tid */ |
7706 | sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8)); | |
c044fabd | 7707 | |
d4c88bbb | 7708 | len = strlen (buf) + 1; |
217aa764 | 7709 | name = bfd_alloc (abfd, len); |
16e9c715 | 7710 | if (name == NULL) |
b34976b6 | 7711 | return FALSE; |
c044fabd | 7712 | |
d4c88bbb | 7713 | memcpy (name, buf, len); |
16e9c715 | 7714 | |
117ed4f8 | 7715 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
16e9c715 | 7716 | if (sect == NULL) |
b34976b6 | 7717 | return FALSE; |
c044fabd | 7718 | |
4a6636fb PA |
7719 | /* sizeof (thread_info.thread_context) */ |
7720 | sect->size = 716; | |
7721 | /* offsetof (thread_info.thread_context) */ | |
7722 | sect->filepos = note->descpos + 12; | |
16e9c715 NC |
7723 | sect->alignment_power = 2; |
7724 | ||
4a6636fb PA |
7725 | /* thread_info.is_active_thread */ |
7726 | is_active_thread = bfd_get_32 (abfd, note->descdata + 8); | |
7727 | ||
7728 | if (is_active_thread) | |
16e9c715 | 7729 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) |
b34976b6 | 7730 | return FALSE; |
16e9c715 NC |
7731 | break; |
7732 | ||
4a6636fb | 7733 | case 3 /* NOTE_INFO_MODULE */: |
16e9c715 | 7734 | /* Make a ".module/xxxxxxxx" section. */ |
4a6636fb PA |
7735 | /* module_info.base_address */ |
7736 | base_addr = bfd_get_32 (abfd, note->descdata + 4); | |
7737 | sprintf (buf, ".module/%08lx", (long) base_addr); | |
c044fabd | 7738 | |
d4c88bbb | 7739 | len = strlen (buf) + 1; |
217aa764 | 7740 | name = bfd_alloc (abfd, len); |
16e9c715 | 7741 | if (name == NULL) |
b34976b6 | 7742 | return FALSE; |
c044fabd | 7743 | |
d4c88bbb | 7744 | memcpy (name, buf, len); |
252b5132 | 7745 | |
117ed4f8 | 7746 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
c044fabd | 7747 | |
16e9c715 | 7748 | if (sect == NULL) |
b34976b6 | 7749 | return FALSE; |
c044fabd | 7750 | |
eea6121a | 7751 | sect->size = note->descsz; |
16e9c715 | 7752 | sect->filepos = note->descpos; |
16e9c715 NC |
7753 | sect->alignment_power = 2; |
7754 | break; | |
7755 | ||
7756 | default: | |
b34976b6 | 7757 | return TRUE; |
16e9c715 NC |
7758 | } |
7759 | ||
b34976b6 | 7760 | return TRUE; |
16e9c715 | 7761 | } |
252b5132 | 7762 | |
b34976b6 | 7763 | static bfd_boolean |
217aa764 | 7764 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7765 | { |
9c5bfbb7 | 7766 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7767 | |
252b5132 RH |
7768 | switch (note->type) |
7769 | { | |
7770 | default: | |
b34976b6 | 7771 | return TRUE; |
252b5132 | 7772 | |
252b5132 | 7773 | case NT_PRSTATUS: |
bb0082d6 AM |
7774 | if (bed->elf_backend_grok_prstatus) |
7775 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7776 | return TRUE; |
bb0082d6 | 7777 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7778 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7779 | #else |
b34976b6 | 7780 | return TRUE; |
252b5132 RH |
7781 | #endif |
7782 | ||
7783 | #if defined (HAVE_PSTATUS_T) | |
7784 | case NT_PSTATUS: | |
7785 | return elfcore_grok_pstatus (abfd, note); | |
7786 | #endif | |
7787 | ||
7788 | #if defined (HAVE_LWPSTATUS_T) | |
7789 | case NT_LWPSTATUS: | |
7790 | return elfcore_grok_lwpstatus (abfd, note); | |
7791 | #endif | |
7792 | ||
7793 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7794 | return elfcore_grok_prfpreg (abfd, note); | |
7795 | ||
c044fabd | 7796 | case NT_WIN32PSTATUS: |
16e9c715 | 7797 | return elfcore_grok_win32pstatus (abfd, note); |
16e9c715 | 7798 | |
c044fabd | 7799 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7800 | if (note->namesz == 6 |
7801 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7802 | return elfcore_grok_prxfpreg (abfd, note); |
7803 | else | |
b34976b6 | 7804 | return TRUE; |
ff08c6bb | 7805 | |
97753bd5 AM |
7806 | case NT_PPC_VMX: |
7807 | if (note->namesz == 6 | |
7808 | && strcmp (note->namedata, "LINUX") == 0) | |
7809 | return elfcore_grok_ppc_vmx (abfd, note); | |
7810 | else | |
7811 | return TRUE; | |
7812 | ||
252b5132 RH |
7813 | case NT_PRPSINFO: |
7814 | case NT_PSINFO: | |
bb0082d6 AM |
7815 | if (bed->elf_backend_grok_psinfo) |
7816 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7817 | return TRUE; |
bb0082d6 | 7818 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7819 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7820 | #else |
b34976b6 | 7821 | return TRUE; |
252b5132 | 7822 | #endif |
3333a7c3 RM |
7823 | |
7824 | case NT_AUXV: | |
7825 | { | |
117ed4f8 AM |
7826 | asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv", |
7827 | SEC_HAS_CONTENTS); | |
3333a7c3 RM |
7828 | |
7829 | if (sect == NULL) | |
7830 | return FALSE; | |
eea6121a | 7831 | sect->size = note->descsz; |
3333a7c3 | 7832 | sect->filepos = note->descpos; |
3333a7c3 RM |
7833 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; |
7834 | ||
7835 | return TRUE; | |
7836 | } | |
252b5132 RH |
7837 | } |
7838 | } | |
7839 | ||
718175fa JK |
7840 | static bfd_boolean |
7841 | elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note) | |
7842 | { | |
7843 | elf_tdata (abfd)->build_id_size = note->descsz; | |
7844 | elf_tdata (abfd)->build_id = bfd_alloc (abfd, note->descsz); | |
7845 | if (elf_tdata (abfd)->build_id == NULL) | |
7846 | return FALSE; | |
7847 | ||
7848 | memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz); | |
7849 | ||
7850 | return TRUE; | |
7851 | } | |
7852 | ||
7853 | static bfd_boolean | |
7854 | elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note) | |
7855 | { | |
7856 | switch (note->type) | |
7857 | { | |
7858 | default: | |
7859 | return TRUE; | |
7860 | ||
7861 | case NT_GNU_BUILD_ID: | |
7862 | return elfobj_grok_gnu_build_id (abfd, note); | |
7863 | } | |
7864 | } | |
7865 | ||
b34976b6 | 7866 | static bfd_boolean |
217aa764 | 7867 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7868 | { |
7869 | char *cp; | |
7870 | ||
7871 | cp = strchr (note->namedata, '@'); | |
7872 | if (cp != NULL) | |
7873 | { | |
d2b64500 | 7874 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7875 | return TRUE; |
50b2bdb7 | 7876 | } |
b34976b6 | 7877 | return FALSE; |
50b2bdb7 AM |
7878 | } |
7879 | ||
b34976b6 | 7880 | static bfd_boolean |
217aa764 | 7881 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 | 7882 | { |
50b2bdb7 AM |
7883 | /* Signal number at offset 0x08. */ |
7884 | elf_tdata (abfd)->core_signal | |
7885 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7886 | ||
7887 | /* Process ID at offset 0x50. */ | |
7888 | elf_tdata (abfd)->core_pid | |
7889 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7890 | ||
7891 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7892 | elf_tdata (abfd)->core_command | |
7893 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7894 | ||
7720ba9f MK |
7895 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7896 | note); | |
50b2bdb7 AM |
7897 | } |
7898 | ||
b34976b6 | 7899 | static bfd_boolean |
217aa764 | 7900 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7901 | { |
7902 | int lwp; | |
7903 | ||
7904 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7905 | elf_tdata (abfd)->core_lwpid = lwp; | |
7906 | ||
b4db1224 | 7907 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7908 | { |
7909 | /* NetBSD-specific core "procinfo". Note that we expect to | |
08a40648 AM |
7910 | find this note before any of the others, which is fine, |
7911 | since the kernel writes this note out first when it | |
7912 | creates a core file. */ | |
47d9a591 | 7913 | |
50b2bdb7 AM |
7914 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7915 | } | |
7916 | ||
b4db1224 JT |
7917 | /* As of Jan 2002 there are no other machine-independent notes |
7918 | defined for NetBSD core files. If the note type is less | |
7919 | than the start of the machine-dependent note types, we don't | |
7920 | understand it. */ | |
47d9a591 | 7921 | |
b4db1224 | 7922 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7923 | return TRUE; |
50b2bdb7 AM |
7924 | |
7925 | ||
7926 | switch (bfd_get_arch (abfd)) | |
7927 | { | |
08a40648 AM |
7928 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and |
7929 | PT_GETFPREGS == mach+2. */ | |
50b2bdb7 AM |
7930 | |
7931 | case bfd_arch_alpha: | |
7932 | case bfd_arch_sparc: | |
7933 | switch (note->type) | |
08a40648 AM |
7934 | { |
7935 | case NT_NETBSDCORE_FIRSTMACH+0: | |
7936 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 7937 | |
08a40648 AM |
7938 | case NT_NETBSDCORE_FIRSTMACH+2: |
7939 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 7940 | |
08a40648 AM |
7941 | default: |
7942 | return TRUE; | |
7943 | } | |
50b2bdb7 | 7944 | |
08a40648 AM |
7945 | /* On all other arch's, PT_GETREGS == mach+1 and |
7946 | PT_GETFPREGS == mach+3. */ | |
50b2bdb7 AM |
7947 | |
7948 | default: | |
7949 | switch (note->type) | |
08a40648 AM |
7950 | { |
7951 | case NT_NETBSDCORE_FIRSTMACH+1: | |
7952 | return elfcore_make_note_pseudosection (abfd, ".reg", note); | |
50b2bdb7 | 7953 | |
08a40648 AM |
7954 | case NT_NETBSDCORE_FIRSTMACH+3: |
7955 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
50b2bdb7 | 7956 | |
08a40648 AM |
7957 | default: |
7958 | return TRUE; | |
7959 | } | |
50b2bdb7 AM |
7960 | } |
7961 | /* NOTREACHED */ | |
7962 | } | |
7963 | ||
07c6e936 | 7964 | static bfd_boolean |
d3fd4074 | 7965 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid) |
07c6e936 NC |
7966 | { |
7967 | void *ddata = note->descdata; | |
7968 | char buf[100]; | |
7969 | char *name; | |
7970 | asection *sect; | |
f8843e87 AM |
7971 | short sig; |
7972 | unsigned flags; | |
07c6e936 NC |
7973 | |
7974 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7975 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7976 | ||
f8843e87 AM |
7977 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7978 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7979 | ||
7980 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7981 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7982 | |
7983 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7984 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7985 | { | |
7986 | elf_tdata (abfd)->core_signal = sig; | |
7987 | elf_tdata (abfd)->core_lwpid = *tid; | |
7988 | } | |
07c6e936 | 7989 | |
f8843e87 AM |
7990 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7991 | do not come from signals so we make sure we set the current | |
7992 | thread just in case. */ | |
7993 | if (flags & 0x00000080) | |
7994 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7995 | |
7996 | /* Make a ".qnx_core_status/%d" section. */ | |
d3fd4074 | 7997 | sprintf (buf, ".qnx_core_status/%ld", *tid); |
07c6e936 | 7998 | |
217aa764 | 7999 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8000 | if (name == NULL) |
8001 | return FALSE; | |
8002 | strcpy (name, buf); | |
8003 | ||
117ed4f8 | 8004 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8005 | if (sect == NULL) |
8006 | return FALSE; | |
8007 | ||
eea6121a | 8008 | sect->size = note->descsz; |
07c6e936 | 8009 | sect->filepos = note->descpos; |
07c6e936 NC |
8010 | sect->alignment_power = 2; |
8011 | ||
8012 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
8013 | } | |
8014 | ||
8015 | static bfd_boolean | |
d69f560c KW |
8016 | elfcore_grok_nto_regs (bfd *abfd, |
8017 | Elf_Internal_Note *note, | |
d3fd4074 | 8018 | long tid, |
d69f560c | 8019 | char *base) |
07c6e936 NC |
8020 | { |
8021 | char buf[100]; | |
8022 | char *name; | |
8023 | asection *sect; | |
8024 | ||
d69f560c | 8025 | /* Make a "(base)/%d" section. */ |
d3fd4074 | 8026 | sprintf (buf, "%s/%ld", base, tid); |
07c6e936 | 8027 | |
217aa764 | 8028 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
8029 | if (name == NULL) |
8030 | return FALSE; | |
8031 | strcpy (name, buf); | |
8032 | ||
117ed4f8 | 8033 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); |
07c6e936 NC |
8034 | if (sect == NULL) |
8035 | return FALSE; | |
8036 | ||
eea6121a | 8037 | sect->size = note->descsz; |
07c6e936 | 8038 | sect->filepos = note->descpos; |
07c6e936 NC |
8039 | sect->alignment_power = 2; |
8040 | ||
f8843e87 AM |
8041 | /* This is the current thread. */ |
8042 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 8043 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
8044 | |
8045 | return TRUE; | |
07c6e936 NC |
8046 | } |
8047 | ||
8048 | #define BFD_QNT_CORE_INFO 7 | |
8049 | #define BFD_QNT_CORE_STATUS 8 | |
8050 | #define BFD_QNT_CORE_GREG 9 | |
8051 | #define BFD_QNT_CORE_FPREG 10 | |
8052 | ||
8053 | static bfd_boolean | |
217aa764 | 8054 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
8055 | { |
8056 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 8057 | tid from the previous call to pass down to the next gregs |
07c6e936 | 8058 | function. */ |
d3fd4074 | 8059 | static long tid = 1; |
07c6e936 NC |
8060 | |
8061 | switch (note->type) | |
8062 | { | |
d69f560c KW |
8063 | case BFD_QNT_CORE_INFO: |
8064 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
8065 | case BFD_QNT_CORE_STATUS: | |
8066 | return elfcore_grok_nto_status (abfd, note, &tid); | |
8067 | case BFD_QNT_CORE_GREG: | |
8068 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
8069 | case BFD_QNT_CORE_FPREG: | |
8070 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
8071 | default: | |
8072 | return TRUE; | |
07c6e936 NC |
8073 | } |
8074 | } | |
8075 | ||
b15fa79e AM |
8076 | static bfd_boolean |
8077 | elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note) | |
8078 | { | |
8079 | char *name; | |
8080 | asection *sect; | |
8081 | size_t len; | |
8082 | ||
8083 | /* Use note name as section name. */ | |
8084 | len = note->namesz; | |
8085 | name = bfd_alloc (abfd, len); | |
8086 | if (name == NULL) | |
8087 | return FALSE; | |
8088 | memcpy (name, note->namedata, len); | |
8089 | name[len - 1] = '\0'; | |
8090 | ||
8091 | sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS); | |
8092 | if (sect == NULL) | |
8093 | return FALSE; | |
8094 | ||
8095 | sect->size = note->descsz; | |
8096 | sect->filepos = note->descpos; | |
8097 | sect->alignment_power = 1; | |
8098 | ||
8099 | return TRUE; | |
8100 | } | |
8101 | ||
7c76fa91 MS |
8102 | /* Function: elfcore_write_note |
8103 | ||
47d9a591 | 8104 | Inputs: |
a39f3346 | 8105 | buffer to hold note, and current size of buffer |
7c76fa91 MS |
8106 | name of note |
8107 | type of note | |
8108 | data for note | |
8109 | size of data for note | |
8110 | ||
a39f3346 AM |
8111 | Writes note to end of buffer. ELF64 notes are written exactly as |
8112 | for ELF32, despite the current (as of 2006) ELF gabi specifying | |
8113 | that they ought to have 8-byte namesz and descsz field, and have | |
8114 | 8-byte alignment. Other writers, eg. Linux kernel, do the same. | |
8115 | ||
7c76fa91 | 8116 | Return: |
a39f3346 | 8117 | Pointer to realloc'd buffer, *BUFSIZ updated. */ |
7c76fa91 MS |
8118 | |
8119 | char * | |
a39f3346 | 8120 | elfcore_write_note (bfd *abfd, |
217aa764 | 8121 | char *buf, |
a39f3346 | 8122 | int *bufsiz, |
217aa764 | 8123 | const char *name, |
a39f3346 | 8124 | int type, |
217aa764 | 8125 | const void *input, |
a39f3346 | 8126 | int size) |
7c76fa91 MS |
8127 | { |
8128 | Elf_External_Note *xnp; | |
d4c88bbb | 8129 | size_t namesz; |
d4c88bbb | 8130 | size_t newspace; |
a39f3346 | 8131 | char *dest; |
7c76fa91 | 8132 | |
d4c88bbb | 8133 | namesz = 0; |
d4c88bbb | 8134 | if (name != NULL) |
a39f3346 | 8135 | namesz = strlen (name) + 1; |
d4c88bbb | 8136 | |
a39f3346 | 8137 | newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4); |
d4c88bbb | 8138 | |
a39f3346 | 8139 | buf = realloc (buf, *bufsiz + newspace); |
14b1c01e AM |
8140 | if (buf == NULL) |
8141 | return buf; | |
a39f3346 | 8142 | dest = buf + *bufsiz; |
7c76fa91 MS |
8143 | *bufsiz += newspace; |
8144 | xnp = (Elf_External_Note *) dest; | |
8145 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
8146 | H_PUT_32 (abfd, size, xnp->descsz); | |
8147 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
8148 | dest = xnp->name; |
8149 | if (name != NULL) | |
8150 | { | |
8151 | memcpy (dest, name, namesz); | |
8152 | dest += namesz; | |
a39f3346 | 8153 | while (namesz & 3) |
d4c88bbb AM |
8154 | { |
8155 | *dest++ = '\0'; | |
a39f3346 | 8156 | ++namesz; |
d4c88bbb AM |
8157 | } |
8158 | } | |
8159 | memcpy (dest, input, size); | |
a39f3346 AM |
8160 | dest += size; |
8161 | while (size & 3) | |
8162 | { | |
8163 | *dest++ = '\0'; | |
8164 | ++size; | |
8165 | } | |
8166 | return buf; | |
7c76fa91 MS |
8167 | } |
8168 | ||
8169 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
8170 | char * | |
217aa764 AM |
8171 | elfcore_write_prpsinfo (bfd *abfd, |
8172 | char *buf, | |
8173 | int *bufsiz, | |
8174 | const char *fname, | |
8175 | const char *psargs) | |
7c76fa91 | 8176 | { |
183e98be AM |
8177 | const char *note_name = "CORE"; |
8178 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8179 | ||
8180 | if (bed->elf_backend_write_core_note != NULL) | |
8181 | { | |
8182 | char *ret; | |
8183 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8184 | NT_PRPSINFO, fname, psargs); | |
8185 | if (ret != NULL) | |
8186 | return ret; | |
8187 | } | |
7c76fa91 | 8188 | |
183e98be AM |
8189 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
8190 | if (bed->s->elfclass == ELFCLASS32) | |
8191 | { | |
8192 | #if defined (HAVE_PSINFO32_T) | |
8193 | psinfo32_t data; | |
8194 | int note_type = NT_PSINFO; | |
8195 | #else | |
8196 | prpsinfo32_t data; | |
8197 | int note_type = NT_PRPSINFO; | |
8198 | #endif | |
8199 | ||
8200 | memset (&data, 0, sizeof (data)); | |
8201 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8202 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8203 | return elfcore_write_note (abfd, buf, bufsiz, | |
8204 | note_name, note_type, &data, sizeof (data)); | |
8205 | } | |
8206 | else | |
8207 | #endif | |
8208 | { | |
7c76fa91 | 8209 | #if defined (HAVE_PSINFO_T) |
183e98be AM |
8210 | psinfo_t data; |
8211 | int note_type = NT_PSINFO; | |
7c76fa91 | 8212 | #else |
183e98be AM |
8213 | prpsinfo_t data; |
8214 | int note_type = NT_PRPSINFO; | |
7c76fa91 MS |
8215 | #endif |
8216 | ||
183e98be AM |
8217 | memset (&data, 0, sizeof (data)); |
8218 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
8219 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
8220 | return elfcore_write_note (abfd, buf, bufsiz, | |
8221 | note_name, note_type, &data, sizeof (data)); | |
8222 | } | |
7c76fa91 MS |
8223 | } |
8224 | #endif /* PSINFO_T or PRPSINFO_T */ | |
8225 | ||
8226 | #if defined (HAVE_PRSTATUS_T) | |
8227 | char * | |
217aa764 AM |
8228 | elfcore_write_prstatus (bfd *abfd, |
8229 | char *buf, | |
8230 | int *bufsiz, | |
8231 | long pid, | |
8232 | int cursig, | |
8233 | const void *gregs) | |
7c76fa91 | 8234 | { |
183e98be AM |
8235 | const char *note_name = "CORE"; |
8236 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8237 | |
183e98be AM |
8238 | if (bed->elf_backend_write_core_note != NULL) |
8239 | { | |
8240 | char *ret; | |
8241 | ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz, | |
8242 | NT_PRSTATUS, | |
8243 | pid, cursig, gregs); | |
8244 | if (ret != NULL) | |
8245 | return ret; | |
8246 | } | |
8247 | ||
8248 | #if defined (HAVE_PRSTATUS32_T) | |
8249 | if (bed->s->elfclass == ELFCLASS32) | |
8250 | { | |
8251 | prstatus32_t prstat; | |
8252 | ||
8253 | memset (&prstat, 0, sizeof (prstat)); | |
8254 | prstat.pr_pid = pid; | |
8255 | prstat.pr_cursig = cursig; | |
8256 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8257 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8258 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8259 | } | |
8260 | else | |
8261 | #endif | |
8262 | { | |
8263 | prstatus_t prstat; | |
8264 | ||
8265 | memset (&prstat, 0, sizeof (prstat)); | |
8266 | prstat.pr_pid = pid; | |
8267 | prstat.pr_cursig = cursig; | |
8268 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); | |
8269 | return elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8270 | NT_PRSTATUS, &prstat, sizeof (prstat)); | |
8271 | } | |
7c76fa91 MS |
8272 | } |
8273 | #endif /* HAVE_PRSTATUS_T */ | |
8274 | ||
51316059 MS |
8275 | #if defined (HAVE_LWPSTATUS_T) |
8276 | char * | |
217aa764 AM |
8277 | elfcore_write_lwpstatus (bfd *abfd, |
8278 | char *buf, | |
8279 | int *bufsiz, | |
8280 | long pid, | |
8281 | int cursig, | |
8282 | const void *gregs) | |
51316059 MS |
8283 | { |
8284 | lwpstatus_t lwpstat; | |
183e98be | 8285 | const char *note_name = "CORE"; |
51316059 MS |
8286 | |
8287 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
8288 | lwpstat.pr_lwpid = pid >> 16; | |
8289 | lwpstat.pr_cursig = cursig; | |
8290 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
8291 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
8292 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
8293 | #if !defined(gregs) | |
8294 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
8295 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
8296 | #else | |
8297 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
8298 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
8299 | #endif | |
8300 | #endif | |
47d9a591 | 8301 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
8302 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
8303 | } | |
8304 | #endif /* HAVE_LWPSTATUS_T */ | |
8305 | ||
7c76fa91 MS |
8306 | #if defined (HAVE_PSTATUS_T) |
8307 | char * | |
217aa764 AM |
8308 | elfcore_write_pstatus (bfd *abfd, |
8309 | char *buf, | |
8310 | int *bufsiz, | |
8311 | long pid, | |
6c10990d NC |
8312 | int cursig ATTRIBUTE_UNUSED, |
8313 | const void *gregs ATTRIBUTE_UNUSED) | |
7c76fa91 | 8314 | { |
183e98be AM |
8315 | const char *note_name = "CORE"; |
8316 | #if defined (HAVE_PSTATUS32_T) | |
8317 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7c76fa91 | 8318 | |
183e98be AM |
8319 | if (bed->s->elfclass == ELFCLASS32) |
8320 | { | |
8321 | pstatus32_t pstat; | |
8322 | ||
8323 | memset (&pstat, 0, sizeof (pstat)); | |
8324 | pstat.pr_pid = pid & 0xffff; | |
8325 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8326 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8327 | return buf; | |
8328 | } | |
8329 | else | |
8330 | #endif | |
8331 | { | |
8332 | pstatus_t pstat; | |
8333 | ||
8334 | memset (&pstat, 0, sizeof (pstat)); | |
8335 | pstat.pr_pid = pid & 0xffff; | |
8336 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, | |
8337 | NT_PSTATUS, &pstat, sizeof (pstat)); | |
8338 | return buf; | |
8339 | } | |
7c76fa91 MS |
8340 | } |
8341 | #endif /* HAVE_PSTATUS_T */ | |
8342 | ||
8343 | char * | |
217aa764 AM |
8344 | elfcore_write_prfpreg (bfd *abfd, |
8345 | char *buf, | |
8346 | int *bufsiz, | |
8347 | const void *fpregs, | |
8348 | int size) | |
7c76fa91 | 8349 | { |
183e98be | 8350 | const char *note_name = "CORE"; |
47d9a591 | 8351 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8352 | note_name, NT_FPREGSET, fpregs, size); |
8353 | } | |
8354 | ||
8355 | char * | |
217aa764 AM |
8356 | elfcore_write_prxfpreg (bfd *abfd, |
8357 | char *buf, | |
8358 | int *bufsiz, | |
8359 | const void *xfpregs, | |
8360 | int size) | |
7c76fa91 MS |
8361 | { |
8362 | char *note_name = "LINUX"; | |
47d9a591 | 8363 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
8364 | note_name, NT_PRXFPREG, xfpregs, size); |
8365 | } | |
8366 | ||
97753bd5 AM |
8367 | char * |
8368 | elfcore_write_ppc_vmx (bfd *abfd, | |
8369 | char *buf, | |
8370 | int *bufsiz, | |
8371 | const void *ppc_vmx, | |
8372 | int size) | |
8373 | { | |
8374 | char *note_name = "LINUX"; | |
8375 | return elfcore_write_note (abfd, buf, bufsiz, | |
8376 | note_name, NT_PPC_VMX, ppc_vmx, size); | |
8377 | } | |
8378 | ||
b34976b6 | 8379 | static bfd_boolean |
718175fa | 8380 | elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset) |
252b5132 | 8381 | { |
c044fabd | 8382 | char *p; |
252b5132 | 8383 | |
252b5132 RH |
8384 | p = buf; |
8385 | while (p < buf + size) | |
8386 | { | |
c044fabd KH |
8387 | /* FIXME: bad alignment assumption. */ |
8388 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
8389 | Elf_Internal_Note in; |
8390 | ||
dc810e39 | 8391 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 8392 | |
dc810e39 | 8393 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
8394 | in.namedata = xnp->name; |
8395 | ||
dc810e39 | 8396 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
8397 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
8398 | in.descpos = offset + (in.descdata - buf); | |
8399 | ||
718175fa JK |
8400 | switch (bfd_get_format (abfd)) |
8401 | { | |
8402 | default: | |
8403 | return TRUE; | |
8404 | ||
8405 | case bfd_core: | |
8406 | if (CONST_STRNEQ (in.namedata, "NetBSD-CORE")) | |
8407 | { | |
8408 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
8409 | return FALSE; | |
8410 | } | |
8411 | else if (CONST_STRNEQ (in.namedata, "QNX")) | |
8412 | { | |
8413 | if (! elfcore_grok_nto_note (abfd, &in)) | |
8414 | return FALSE; | |
8415 | } | |
b15fa79e AM |
8416 | else if (CONST_STRNEQ (in.namedata, "SPU/")) |
8417 | { | |
8418 | if (! elfcore_grok_spu_note (abfd, &in)) | |
8419 | return FALSE; | |
8420 | } | |
718175fa JK |
8421 | else |
8422 | { | |
8423 | if (! elfcore_grok_note (abfd, &in)) | |
8424 | return FALSE; | |
8425 | } | |
8426 | break; | |
8427 | ||
8428 | case bfd_object: | |
8429 | if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0) | |
8430 | { | |
8431 | if (! elfobj_grok_gnu_note (abfd, &in)) | |
8432 | return FALSE; | |
8433 | } | |
8434 | break; | |
08a40648 | 8435 | } |
252b5132 RH |
8436 | |
8437 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
8438 | } | |
8439 | ||
718175fa JK |
8440 | return TRUE; |
8441 | } | |
8442 | ||
8443 | static bfd_boolean | |
8444 | elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) | |
8445 | { | |
8446 | char *buf; | |
8447 | ||
8448 | if (size <= 0) | |
8449 | return TRUE; | |
8450 | ||
8451 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) | |
8452 | return FALSE; | |
8453 | ||
8454 | buf = bfd_malloc (size); | |
8455 | if (buf == NULL) | |
8456 | return FALSE; | |
8457 | ||
8458 | if (bfd_bread (buf, size, abfd) != size | |
8459 | || !elf_parse_notes (abfd, buf, size, offset)) | |
8460 | { | |
8461 | free (buf); | |
8462 | return FALSE; | |
8463 | } | |
8464 | ||
252b5132 | 8465 | free (buf); |
b34976b6 | 8466 | return TRUE; |
252b5132 | 8467 | } |
98d8431c JB |
8468 | \f |
8469 | /* Providing external access to the ELF program header table. */ | |
8470 | ||
8471 | /* Return an upper bound on the number of bytes required to store a | |
8472 | copy of ABFD's program header table entries. Return -1 if an error | |
8473 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8474 | |
98d8431c | 8475 | long |
217aa764 | 8476 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
8477 | { |
8478 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8479 | { | |
8480 | bfd_set_error (bfd_error_wrong_format); | |
8481 | return -1; | |
8482 | } | |
8483 | ||
936e320b | 8484 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
8485 | } |
8486 | ||
98d8431c JB |
8487 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
8488 | will be stored as an array of Elf_Internal_Phdr structures, as | |
8489 | defined in include/elf/internal.h. To find out how large the | |
8490 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
8491 | ||
8492 | Return the number of program header table entries read, or -1 if an | |
8493 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 8494 | |
98d8431c | 8495 | int |
217aa764 | 8496 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
8497 | { |
8498 | int num_phdrs; | |
8499 | ||
8500 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
8501 | { | |
8502 | bfd_set_error (bfd_error_wrong_format); | |
8503 | return -1; | |
8504 | } | |
8505 | ||
8506 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 8507 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
8508 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
8509 | ||
8510 | return num_phdrs; | |
8511 | } | |
ae4221d7 | 8512 | |
db6751f2 | 8513 | enum elf_reloc_type_class |
217aa764 | 8514 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
8515 | { |
8516 | return reloc_class_normal; | |
8517 | } | |
f8df10f4 | 8518 | |
47d9a591 | 8519 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
8520 | relocation against a local symbol. */ |
8521 | ||
8522 | bfd_vma | |
217aa764 AM |
8523 | _bfd_elf_rela_local_sym (bfd *abfd, |
8524 | Elf_Internal_Sym *sym, | |
8517fae7 | 8525 | asection **psec, |
217aa764 | 8526 | Elf_Internal_Rela *rel) |
f8df10f4 | 8527 | { |
8517fae7 | 8528 | asection *sec = *psec; |
f8df10f4 JJ |
8529 | bfd_vma relocation; |
8530 | ||
8531 | relocation = (sec->output_section->vma | |
8532 | + sec->output_offset | |
8533 | + sym->st_value); | |
8534 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 8535 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 8536 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 8537 | { |
f8df10f4 | 8538 | rel->r_addend = |
8517fae7 | 8539 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 8540 | elf_section_data (sec)->sec_info, |
753731ee AM |
8541 | sym->st_value + rel->r_addend); |
8542 | if (sec != *psec) | |
8543 | { | |
8544 | /* If we have changed the section, and our original section is | |
8545 | marked with SEC_EXCLUDE, it means that the original | |
8546 | SEC_MERGE section has been completely subsumed in some | |
8547 | other SEC_MERGE section. In this case, we need to leave | |
8548 | some info around for --emit-relocs. */ | |
8549 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
8550 | sec->kept_section = *psec; | |
8551 | sec = *psec; | |
8552 | } | |
8517fae7 AM |
8553 | rel->r_addend -= relocation; |
8554 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
8555 | } |
8556 | return relocation; | |
8557 | } | |
c629eae0 JJ |
8558 | |
8559 | bfd_vma | |
217aa764 AM |
8560 | _bfd_elf_rel_local_sym (bfd *abfd, |
8561 | Elf_Internal_Sym *sym, | |
8562 | asection **psec, | |
8563 | bfd_vma addend) | |
47d9a591 | 8564 | { |
c629eae0 JJ |
8565 | asection *sec = *psec; |
8566 | ||
68bfbfcc | 8567 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
8568 | return sym->st_value + addend; |
8569 | ||
8570 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 8571 | elf_section_data (sec)->sec_info, |
753731ee | 8572 | sym->st_value + addend); |
c629eae0 JJ |
8573 | } |
8574 | ||
8575 | bfd_vma | |
217aa764 | 8576 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 8577 | struct bfd_link_info *info, |
217aa764 AM |
8578 | asection *sec, |
8579 | bfd_vma offset) | |
c629eae0 | 8580 | { |
68bfbfcc | 8581 | switch (sec->sec_info_type) |
65765700 JJ |
8582 | { |
8583 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8584 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8585 | offset); | |
65765700 | 8586 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8587 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8588 | default: |
8589 | return offset; | |
8590 | } | |
c629eae0 | 8591 | } |
3333a7c3 RM |
8592 | \f |
8593 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8594 | reconstruct an ELF file by reading the segments out of remote memory | |
8595 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8596 | points to. If not null, *LOADBASEP is filled in with the difference | |
8597 | between the VMAs from which the segments were read, and the VMAs the | |
8598 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8599 | ||
8600 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8601 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8602 | should return zero on success or an `errno' code on failure. TEMPL must | |
8603 | be a BFD for an ELF target with the word size and byte order found in | |
8604 | the remote memory. */ | |
8605 | ||
8606 | bfd * | |
217aa764 AM |
8607 | bfd_elf_bfd_from_remote_memory |
8608 | (bfd *templ, | |
8609 | bfd_vma ehdr_vma, | |
8610 | bfd_vma *loadbasep, | |
f075ee0c | 8611 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8612 | { |
8613 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8614 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8615 | } | |
4c45e5c9 JJ |
8616 | \f |
8617 | long | |
c9727e01 AM |
8618 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8619 | long symcount ATTRIBUTE_UNUSED, | |
8620 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8621 | long dynsymcount, |
c9727e01 AM |
8622 | asymbol **dynsyms, |
8623 | asymbol **ret) | |
4c45e5c9 JJ |
8624 | { |
8625 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8626 | asection *relplt; | |
8627 | asymbol *s; | |
8628 | const char *relplt_name; | |
8629 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8630 | arelent *p; | |
8631 | long count, i, n; | |
8632 | size_t size; | |
8633 | Elf_Internal_Shdr *hdr; | |
8634 | char *names; | |
8635 | asection *plt; | |
8636 | ||
8615f3f2 AM |
8637 | *ret = NULL; |
8638 | ||
90e3cdf2 JJ |
8639 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8640 | return 0; | |
8641 | ||
8615f3f2 AM |
8642 | if (dynsymcount <= 0) |
8643 | return 0; | |
8644 | ||
4c45e5c9 JJ |
8645 | if (!bed->plt_sym_val) |
8646 | return 0; | |
8647 | ||
8648 | relplt_name = bed->relplt_name; | |
8649 | if (relplt_name == NULL) | |
8650 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8651 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8652 | if (relplt == NULL) | |
8653 | return 0; | |
8654 | ||
8655 | hdr = &elf_section_data (relplt)->this_hdr; | |
8656 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8657 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8658 | return 0; | |
8659 | ||
8660 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8661 | if (plt == NULL) | |
8662 | return 0; | |
8663 | ||
8664 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8665 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8666 | return -1; |
8667 | ||
eea6121a | 8668 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8669 | size = count * sizeof (asymbol); |
8670 | p = relplt->relocation; | |
b7fd5ce1 | 8671 | for (i = 0; i < count; i++, p++) |
4c45e5c9 JJ |
8672 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); |
8673 | ||
8674 | s = *ret = bfd_malloc (size); | |
8675 | if (s == NULL) | |
8676 | return -1; | |
8677 | ||
8678 | names = (char *) (s + count); | |
8679 | p = relplt->relocation; | |
8680 | n = 0; | |
8f39ba8e | 8681 | for (i = 0; i < count; i++, p++) |
4c45e5c9 JJ |
8682 | { |
8683 | size_t len; | |
8684 | bfd_vma addr; | |
8685 | ||
8686 | addr = bed->plt_sym_val (i, plt, p); | |
8687 | if (addr == (bfd_vma) -1) | |
8688 | continue; | |
8689 | ||
8690 | *s = **p->sym_ptr_ptr; | |
65a7a66f AM |
8691 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since |
8692 | we are defining a symbol, ensure one of them is set. */ | |
8693 | if ((s->flags & BSF_LOCAL) == 0) | |
8694 | s->flags |= BSF_GLOBAL; | |
4c45e5c9 JJ |
8695 | s->section = plt; |
8696 | s->value = addr - plt->vma; | |
8697 | s->name = names; | |
8f39ba8e | 8698 | s->udata.p = NULL; |
4c45e5c9 JJ |
8699 | len = strlen ((*p->sym_ptr_ptr)->name); |
8700 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8701 | names += len; | |
8702 | memcpy (names, "@plt", sizeof ("@plt")); | |
8703 | names += sizeof ("@plt"); | |
8f39ba8e | 8704 | ++s, ++n; |
4c45e5c9 JJ |
8705 | } |
8706 | ||
8707 | return n; | |
8708 | } | |
3d7f7666 | 8709 | |
3b22753a L |
8710 | /* It is only used by x86-64 so far. */ |
8711 | asection _bfd_elf_large_com_section | |
8712 | = BFD_FAKE_SECTION (_bfd_elf_large_com_section, | |
f592407e | 8713 | SEC_IS_COMMON, NULL, "LARGE_COMMON", 0); |
ecca9871 | 8714 | |
d1036acb L |
8715 | void |
8716 | _bfd_elf_set_osabi (bfd * abfd, | |
8717 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED) | |
8718 | { | |
8719 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
8720 | ||
8721 | i_ehdrp = elf_elfheader (abfd); | |
8722 | ||
8723 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; | |
8724 | } | |
fcb93ecf PB |
8725 | |
8726 | ||
8727 | /* Return TRUE for ELF symbol types that represent functions. | |
8728 | This is the default version of this function, which is sufficient for | |
8729 | most targets. It returns true if TYPE is STT_FUNC. */ | |
8730 | ||
8731 | bfd_boolean | |
8732 | _bfd_elf_is_function_type (unsigned int type) | |
8733 | { | |
8734 | return (type == STT_FUNC); | |
8735 | } |