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Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
8615f3f2 | 4 | 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 | 21 | |
661a3fd4 | 22 | /* SECTION |
47d9a591 | 23 | |
252b5132 RH |
24 | ELF backends |
25 | ||
26 | BFD support for ELF formats is being worked on. | |
27 | Currently, the best supported back ends are for sparc and i386 | |
28 | (running svr4 or Solaris 2). | |
29 | ||
30 | Documentation of the internals of the support code still needs | |
31 | to be written. The code is changing quickly enough that we | |
661a3fd4 | 32 | haven't bothered yet. */ |
252b5132 | 33 | |
7ee38065 MS |
34 | /* For sparc64-cross-sparc32. */ |
35 | #define _SYSCALL32 | |
252b5132 RH |
36 | #include "bfd.h" |
37 | #include "sysdep.h" | |
38 | #include "bfdlink.h" | |
39 | #include "libbfd.h" | |
40 | #define ARCH_SIZE 0 | |
41 | #include "elf-bfd.h" | |
e0e8c97f | 42 | #include "libiberty.h" |
252b5132 | 43 | |
217aa764 | 44 | static int elf_sort_sections (const void *, const void *); |
c84fca4d | 45 | static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *); |
217aa764 AM |
46 | static bfd_boolean prep_headers (bfd *); |
47 | static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ; | |
48 | static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ; | |
50b2bdb7 | 49 | |
252b5132 RH |
50 | /* Swap version information in and out. The version information is |
51 | currently size independent. If that ever changes, this code will | |
52 | need to move into elfcode.h. */ | |
53 | ||
54 | /* Swap in a Verdef structure. */ | |
55 | ||
56 | void | |
217aa764 AM |
57 | _bfd_elf_swap_verdef_in (bfd *abfd, |
58 | const Elf_External_Verdef *src, | |
59 | Elf_Internal_Verdef *dst) | |
252b5132 | 60 | { |
dc810e39 AM |
61 | dst->vd_version = H_GET_16 (abfd, src->vd_version); |
62 | dst->vd_flags = H_GET_16 (abfd, src->vd_flags); | |
63 | dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx); | |
64 | dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt); | |
65 | dst->vd_hash = H_GET_32 (abfd, src->vd_hash); | |
66 | dst->vd_aux = H_GET_32 (abfd, src->vd_aux); | |
67 | dst->vd_next = H_GET_32 (abfd, src->vd_next); | |
252b5132 RH |
68 | } |
69 | ||
70 | /* Swap out a Verdef structure. */ | |
71 | ||
72 | void | |
217aa764 AM |
73 | _bfd_elf_swap_verdef_out (bfd *abfd, |
74 | const Elf_Internal_Verdef *src, | |
75 | Elf_External_Verdef *dst) | |
252b5132 | 76 | { |
dc810e39 AM |
77 | H_PUT_16 (abfd, src->vd_version, dst->vd_version); |
78 | H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); | |
79 | H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
80 | H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
81 | H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); | |
82 | H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); | |
83 | H_PUT_32 (abfd, src->vd_next, dst->vd_next); | |
252b5132 RH |
84 | } |
85 | ||
86 | /* Swap in a Verdaux structure. */ | |
87 | ||
88 | void | |
217aa764 AM |
89 | _bfd_elf_swap_verdaux_in (bfd *abfd, |
90 | const Elf_External_Verdaux *src, | |
91 | Elf_Internal_Verdaux *dst) | |
252b5132 | 92 | { |
dc810e39 AM |
93 | dst->vda_name = H_GET_32 (abfd, src->vda_name); |
94 | dst->vda_next = H_GET_32 (abfd, src->vda_next); | |
252b5132 RH |
95 | } |
96 | ||
97 | /* Swap out a Verdaux structure. */ | |
98 | ||
99 | void | |
217aa764 AM |
100 | _bfd_elf_swap_verdaux_out (bfd *abfd, |
101 | const Elf_Internal_Verdaux *src, | |
102 | Elf_External_Verdaux *dst) | |
252b5132 | 103 | { |
dc810e39 AM |
104 | H_PUT_32 (abfd, src->vda_name, dst->vda_name); |
105 | H_PUT_32 (abfd, src->vda_next, dst->vda_next); | |
252b5132 RH |
106 | } |
107 | ||
108 | /* Swap in a Verneed structure. */ | |
109 | ||
110 | void | |
217aa764 AM |
111 | _bfd_elf_swap_verneed_in (bfd *abfd, |
112 | const Elf_External_Verneed *src, | |
113 | Elf_Internal_Verneed *dst) | |
252b5132 | 114 | { |
dc810e39 AM |
115 | dst->vn_version = H_GET_16 (abfd, src->vn_version); |
116 | dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt); | |
117 | dst->vn_file = H_GET_32 (abfd, src->vn_file); | |
118 | dst->vn_aux = H_GET_32 (abfd, src->vn_aux); | |
119 | dst->vn_next = H_GET_32 (abfd, src->vn_next); | |
252b5132 RH |
120 | } |
121 | ||
122 | /* Swap out a Verneed structure. */ | |
123 | ||
124 | void | |
217aa764 AM |
125 | _bfd_elf_swap_verneed_out (bfd *abfd, |
126 | const Elf_Internal_Verneed *src, | |
127 | Elf_External_Verneed *dst) | |
252b5132 | 128 | { |
dc810e39 AM |
129 | H_PUT_16 (abfd, src->vn_version, dst->vn_version); |
130 | H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
131 | H_PUT_32 (abfd, src->vn_file, dst->vn_file); | |
132 | H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); | |
133 | H_PUT_32 (abfd, src->vn_next, dst->vn_next); | |
252b5132 RH |
134 | } |
135 | ||
136 | /* Swap in a Vernaux structure. */ | |
137 | ||
138 | void | |
217aa764 AM |
139 | _bfd_elf_swap_vernaux_in (bfd *abfd, |
140 | const Elf_External_Vernaux *src, | |
141 | Elf_Internal_Vernaux *dst) | |
252b5132 | 142 | { |
dc810e39 AM |
143 | dst->vna_hash = H_GET_32 (abfd, src->vna_hash); |
144 | dst->vna_flags = H_GET_16 (abfd, src->vna_flags); | |
145 | dst->vna_other = H_GET_16 (abfd, src->vna_other); | |
146 | dst->vna_name = H_GET_32 (abfd, src->vna_name); | |
147 | dst->vna_next = H_GET_32 (abfd, src->vna_next); | |
252b5132 RH |
148 | } |
149 | ||
150 | /* Swap out a Vernaux structure. */ | |
151 | ||
152 | void | |
217aa764 AM |
153 | _bfd_elf_swap_vernaux_out (bfd *abfd, |
154 | const Elf_Internal_Vernaux *src, | |
155 | Elf_External_Vernaux *dst) | |
252b5132 | 156 | { |
dc810e39 AM |
157 | H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); |
158 | H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); | |
159 | H_PUT_16 (abfd, src->vna_other, dst->vna_other); | |
160 | H_PUT_32 (abfd, src->vna_name, dst->vna_name); | |
161 | H_PUT_32 (abfd, src->vna_next, dst->vna_next); | |
252b5132 RH |
162 | } |
163 | ||
164 | /* Swap in a Versym structure. */ | |
165 | ||
166 | void | |
217aa764 AM |
167 | _bfd_elf_swap_versym_in (bfd *abfd, |
168 | const Elf_External_Versym *src, | |
169 | Elf_Internal_Versym *dst) | |
252b5132 | 170 | { |
dc810e39 | 171 | dst->vs_vers = H_GET_16 (abfd, src->vs_vers); |
252b5132 RH |
172 | } |
173 | ||
174 | /* Swap out a Versym structure. */ | |
175 | ||
176 | void | |
217aa764 AM |
177 | _bfd_elf_swap_versym_out (bfd *abfd, |
178 | const Elf_Internal_Versym *src, | |
179 | Elf_External_Versym *dst) | |
252b5132 | 180 | { |
dc810e39 | 181 | H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); |
252b5132 RH |
182 | } |
183 | ||
184 | /* Standard ELF hash function. Do not change this function; you will | |
185 | cause invalid hash tables to be generated. */ | |
3a99b017 | 186 | |
252b5132 | 187 | unsigned long |
217aa764 | 188 | bfd_elf_hash (const char *namearg) |
252b5132 | 189 | { |
3a99b017 | 190 | const unsigned char *name = (const unsigned char *) namearg; |
252b5132 RH |
191 | unsigned long h = 0; |
192 | unsigned long g; | |
193 | int ch; | |
194 | ||
195 | while ((ch = *name++) != '\0') | |
196 | { | |
197 | h = (h << 4) + ch; | |
198 | if ((g = (h & 0xf0000000)) != 0) | |
199 | { | |
200 | h ^= g >> 24; | |
201 | /* The ELF ABI says `h &= ~g', but this is equivalent in | |
202 | this case and on some machines one insn instead of two. */ | |
203 | h ^= g; | |
204 | } | |
205 | } | |
32dfa85d | 206 | return h & 0xffffffff; |
252b5132 RH |
207 | } |
208 | ||
209 | /* Read a specified number of bytes at a specified offset in an ELF | |
210 | file, into a newly allocated buffer, and return a pointer to the | |
c044fabd | 211 | buffer. */ |
252b5132 | 212 | |
f075ee0c | 213 | static bfd_byte * |
217aa764 | 214 | elf_read (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 215 | { |
f075ee0c | 216 | bfd_byte *buf; |
252b5132 RH |
217 | |
218 | if ((buf = bfd_alloc (abfd, size)) == NULL) | |
219 | return NULL; | |
dc810e39 | 220 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
252b5132 | 221 | return NULL; |
217aa764 | 222 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
223 | { |
224 | if (bfd_get_error () != bfd_error_system_call) | |
225 | bfd_set_error (bfd_error_file_truncated); | |
226 | return NULL; | |
227 | } | |
228 | return buf; | |
229 | } | |
230 | ||
b34976b6 | 231 | bfd_boolean |
217aa764 | 232 | bfd_elf_mkobject (bfd *abfd) |
252b5132 | 233 | { |
c044fabd KH |
234 | /* This just does initialization. */ |
235 | /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */ | |
217aa764 | 236 | elf_tdata (abfd) = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); |
252b5132 | 237 | if (elf_tdata (abfd) == 0) |
b34976b6 | 238 | return FALSE; |
c044fabd KH |
239 | /* Since everything is done at close time, do we need any |
240 | initialization? */ | |
252b5132 | 241 | |
b34976b6 | 242 | return TRUE; |
252b5132 RH |
243 | } |
244 | ||
b34976b6 | 245 | bfd_boolean |
217aa764 | 246 | bfd_elf_mkcorefile (bfd *abfd) |
252b5132 | 247 | { |
c044fabd | 248 | /* I think this can be done just like an object file. */ |
252b5132 RH |
249 | return bfd_elf_mkobject (abfd); |
250 | } | |
251 | ||
252 | char * | |
217aa764 | 253 | bfd_elf_get_str_section (bfd *abfd, unsigned int shindex) |
252b5132 RH |
254 | { |
255 | Elf_Internal_Shdr **i_shdrp; | |
f075ee0c | 256 | bfd_byte *shstrtab = NULL; |
dc810e39 AM |
257 | file_ptr offset; |
258 | bfd_size_type shstrtabsize; | |
252b5132 RH |
259 | |
260 | i_shdrp = elf_elfsections (abfd); | |
261 | if (i_shdrp == 0 || i_shdrp[shindex] == 0) | |
f075ee0c | 262 | return NULL; |
252b5132 | 263 | |
f075ee0c | 264 | shstrtab = i_shdrp[shindex]->contents; |
252b5132 RH |
265 | if (shstrtab == NULL) |
266 | { | |
c044fabd | 267 | /* No cached one, attempt to read, and cache what we read. */ |
252b5132 RH |
268 | offset = i_shdrp[shindex]->sh_offset; |
269 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
270 | shstrtab = elf_read (abfd, offset, shstrtabsize); | |
217aa764 | 271 | i_shdrp[shindex]->contents = shstrtab; |
252b5132 | 272 | } |
f075ee0c | 273 | return (char *) shstrtab; |
252b5132 RH |
274 | } |
275 | ||
276 | char * | |
217aa764 AM |
277 | bfd_elf_string_from_elf_section (bfd *abfd, |
278 | unsigned int shindex, | |
279 | unsigned int strindex) | |
252b5132 RH |
280 | { |
281 | Elf_Internal_Shdr *hdr; | |
282 | ||
283 | if (strindex == 0) | |
284 | return ""; | |
285 | ||
286 | hdr = elf_elfsections (abfd)[shindex]; | |
287 | ||
288 | if (hdr->contents == NULL | |
289 | && bfd_elf_get_str_section (abfd, shindex) == NULL) | |
290 | return NULL; | |
291 | ||
292 | if (strindex >= hdr->sh_size) | |
293 | { | |
1b3a8575 | 294 | unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx; |
252b5132 | 295 | (*_bfd_error_handler) |
d003868e AM |
296 | (_("%B: invalid string offset %u >= %lu for section `%s'"), |
297 | abfd, strindex, (unsigned long) hdr->sh_size, | |
1b3a8575 | 298 | (shindex == shstrndx && strindex == hdr->sh_name |
252b5132 | 299 | ? ".shstrtab" |
1b3a8575 | 300 | : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name))); |
252b5132 RH |
301 | return ""; |
302 | } | |
303 | ||
304 | return ((char *) hdr->contents) + strindex; | |
305 | } | |
306 | ||
6cdc0ccc AM |
307 | /* Read and convert symbols to internal format. |
308 | SYMCOUNT specifies the number of symbols to read, starting from | |
309 | symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF | |
310 | are non-NULL, they are used to store the internal symbols, external | |
311 | symbols, and symbol section index extensions, respectively. */ | |
312 | ||
313 | Elf_Internal_Sym * | |
217aa764 AM |
314 | bfd_elf_get_elf_syms (bfd *ibfd, |
315 | Elf_Internal_Shdr *symtab_hdr, | |
316 | size_t symcount, | |
317 | size_t symoffset, | |
318 | Elf_Internal_Sym *intsym_buf, | |
319 | void *extsym_buf, | |
320 | Elf_External_Sym_Shndx *extshndx_buf) | |
6cdc0ccc AM |
321 | { |
322 | Elf_Internal_Shdr *shndx_hdr; | |
217aa764 | 323 | void *alloc_ext; |
df622259 | 324 | const bfd_byte *esym; |
6cdc0ccc AM |
325 | Elf_External_Sym_Shndx *alloc_extshndx; |
326 | Elf_External_Sym_Shndx *shndx; | |
327 | Elf_Internal_Sym *isym; | |
328 | Elf_Internal_Sym *isymend; | |
9c5bfbb7 | 329 | const struct elf_backend_data *bed; |
6cdc0ccc AM |
330 | size_t extsym_size; |
331 | bfd_size_type amt; | |
332 | file_ptr pos; | |
333 | ||
334 | if (symcount == 0) | |
335 | return intsym_buf; | |
336 | ||
337 | /* Normal syms might have section extension entries. */ | |
338 | shndx_hdr = NULL; | |
339 | if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) | |
340 | shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; | |
341 | ||
342 | /* Read the symbols. */ | |
343 | alloc_ext = NULL; | |
344 | alloc_extshndx = NULL; | |
345 | bed = get_elf_backend_data (ibfd); | |
346 | extsym_size = bed->s->sizeof_sym; | |
347 | amt = symcount * extsym_size; | |
348 | pos = symtab_hdr->sh_offset + symoffset * extsym_size; | |
349 | if (extsym_buf == NULL) | |
350 | { | |
351 | alloc_ext = bfd_malloc (amt); | |
352 | extsym_buf = alloc_ext; | |
353 | } | |
354 | if (extsym_buf == NULL | |
355 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
356 | || bfd_bread (extsym_buf, amt, ibfd) != amt) | |
357 | { | |
358 | intsym_buf = NULL; | |
359 | goto out; | |
360 | } | |
361 | ||
362 | if (shndx_hdr == NULL || shndx_hdr->sh_size == 0) | |
363 | extshndx_buf = NULL; | |
364 | else | |
365 | { | |
366 | amt = symcount * sizeof (Elf_External_Sym_Shndx); | |
367 | pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx); | |
368 | if (extshndx_buf == NULL) | |
369 | { | |
217aa764 | 370 | alloc_extshndx = bfd_malloc (amt); |
6cdc0ccc AM |
371 | extshndx_buf = alloc_extshndx; |
372 | } | |
373 | if (extshndx_buf == NULL | |
374 | || bfd_seek (ibfd, pos, SEEK_SET) != 0 | |
375 | || bfd_bread (extshndx_buf, amt, ibfd) != amt) | |
376 | { | |
377 | intsym_buf = NULL; | |
378 | goto out; | |
379 | } | |
380 | } | |
381 | ||
382 | if (intsym_buf == NULL) | |
383 | { | |
384 | bfd_size_type amt = symcount * sizeof (Elf_Internal_Sym); | |
217aa764 | 385 | intsym_buf = bfd_malloc (amt); |
6cdc0ccc AM |
386 | if (intsym_buf == NULL) |
387 | goto out; | |
388 | } | |
389 | ||
390 | /* Convert the symbols to internal form. */ | |
391 | isymend = intsym_buf + symcount; | |
392 | for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; | |
393 | isym < isymend; | |
394 | esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL) | |
217aa764 | 395 | (*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym); |
6cdc0ccc AM |
396 | |
397 | out: | |
398 | if (alloc_ext != NULL) | |
399 | free (alloc_ext); | |
400 | if (alloc_extshndx != NULL) | |
401 | free (alloc_extshndx); | |
402 | ||
403 | return intsym_buf; | |
404 | } | |
405 | ||
5cab59f6 AM |
406 | /* Look up a symbol name. */ |
407 | const char * | |
be8dd2ca AM |
408 | bfd_elf_sym_name (bfd *abfd, |
409 | Elf_Internal_Shdr *symtab_hdr, | |
26c61ae5 L |
410 | Elf_Internal_Sym *isym, |
411 | asection *sym_sec) | |
5cab59f6 | 412 | { |
26c61ae5 | 413 | const char *name; |
5cab59f6 | 414 | unsigned int iname = isym->st_name; |
be8dd2ca | 415 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 416 | |
138f35cc JJ |
417 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
418 | /* Check for a bogus st_shndx to avoid crashing. */ | |
419 | && isym->st_shndx < elf_numsections (abfd) | |
420 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
421 | { |
422 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
423 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
424 | } | |
425 | ||
26c61ae5 L |
426 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
427 | if (name == NULL) | |
428 | name = "(null)"; | |
429 | else if (sym_sec && *name == '\0') | |
430 | name = bfd_section_name (abfd, sym_sec); | |
431 | ||
432 | return name; | |
5cab59f6 AM |
433 | } |
434 | ||
dbb410c3 AM |
435 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
436 | sections. The first element is the flags, the rest are section | |
437 | pointers. */ | |
438 | ||
439 | typedef union elf_internal_group { | |
440 | Elf_Internal_Shdr *shdr; | |
441 | unsigned int flags; | |
442 | } Elf_Internal_Group; | |
443 | ||
b885599b AM |
444 | /* Return the name of the group signature symbol. Why isn't the |
445 | signature just a string? */ | |
446 | ||
447 | static const char * | |
217aa764 | 448 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 449 | { |
9dce4196 | 450 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
451 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
452 | Elf_External_Sym_Shndx eshndx; | |
453 | Elf_Internal_Sym isym; | |
b885599b AM |
454 | |
455 | /* First we need to ensure the symbol table is available. */ | |
456 | if (! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
457 | return NULL; | |
458 | ||
9dce4196 AM |
459 | /* Go read the symbol. */ |
460 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
461 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
462 | &isym, esym, &eshndx) == NULL) | |
b885599b | 463 | return NULL; |
9dce4196 | 464 | |
26c61ae5 | 465 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
466 | } |
467 | ||
dbb410c3 AM |
468 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
469 | ||
b34976b6 | 470 | static bfd_boolean |
217aa764 | 471 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
472 | { |
473 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
474 | ||
475 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
476 | is set to -1 if there are no SHT_GROUP sections. */ | |
477 | if (num_group == 0) | |
478 | { | |
479 | unsigned int i, shnum; | |
480 | ||
481 | /* First count the number of groups. If we have a SHT_GROUP | |
482 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 483 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
484 | num_group = 0; |
485 | for (i = 0; i < shnum; i++) | |
486 | { | |
487 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
488 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
489 | num_group += 1; | |
490 | } | |
491 | ||
492 | if (num_group == 0) | |
20dbb49d L |
493 | { |
494 | num_group = (unsigned) -1; | |
495 | elf_tdata (abfd)->num_group = num_group; | |
496 | } | |
497 | else | |
dbb410c3 AM |
498 | { |
499 | /* We keep a list of elf section headers for group sections, | |
500 | so we can find them quickly. */ | |
20dbb49d L |
501 | bfd_size_type amt; |
502 | ||
503 | elf_tdata (abfd)->num_group = num_group; | |
504 | amt = num_group * sizeof (Elf_Internal_Shdr *); | |
dbb410c3 AM |
505 | elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt); |
506 | if (elf_tdata (abfd)->group_sect_ptr == NULL) | |
b34976b6 | 507 | return FALSE; |
dbb410c3 AM |
508 | |
509 | num_group = 0; | |
510 | for (i = 0; i < shnum; i++) | |
511 | { | |
512 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
513 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
514 | { | |
973ffd63 | 515 | unsigned char *src; |
dbb410c3 AM |
516 | Elf_Internal_Group *dest; |
517 | ||
518 | /* Add to list of sections. */ | |
519 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
520 | num_group += 1; | |
521 | ||
522 | /* Read the raw contents. */ | |
523 | BFD_ASSERT (sizeof (*dest) >= 4); | |
524 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
525 | shdr->contents = bfd_alloc (abfd, amt); | |
526 | if (shdr->contents == NULL | |
527 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
528 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
529 | != shdr->sh_size)) | |
b34976b6 | 530 | return FALSE; |
dbb410c3 AM |
531 | |
532 | /* Translate raw contents, a flag word followed by an | |
533 | array of elf section indices all in target byte order, | |
534 | to the flag word followed by an array of elf section | |
535 | pointers. */ | |
536 | src = shdr->contents + shdr->sh_size; | |
537 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
538 | while (1) | |
539 | { | |
540 | unsigned int idx; | |
541 | ||
542 | src -= 4; | |
543 | --dest; | |
544 | idx = H_GET_32 (abfd, src); | |
545 | if (src == shdr->contents) | |
546 | { | |
547 | dest->flags = idx; | |
b885599b AM |
548 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
549 | shdr->bfd_section->flags | |
550 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
551 | break; |
552 | } | |
553 | if (idx >= shnum) | |
554 | { | |
555 | ((*_bfd_error_handler) | |
d003868e | 556 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
557 | idx = 0; |
558 | } | |
559 | dest->shdr = elf_elfsections (abfd)[idx]; | |
560 | } | |
561 | } | |
562 | } | |
563 | } | |
564 | } | |
565 | ||
566 | if (num_group != (unsigned) -1) | |
567 | { | |
568 | unsigned int i; | |
569 | ||
570 | for (i = 0; i < num_group; i++) | |
571 | { | |
572 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
573 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
574 | unsigned int n_elt = shdr->sh_size / 4; | |
575 | ||
576 | /* Look through this group's sections to see if current | |
577 | section is a member. */ | |
578 | while (--n_elt != 0) | |
579 | if ((++idx)->shdr == hdr) | |
580 | { | |
e0e8c97f | 581 | asection *s = NULL; |
dbb410c3 AM |
582 | |
583 | /* We are a member of this group. Go looking through | |
584 | other members to see if any others are linked via | |
585 | next_in_group. */ | |
586 | idx = (Elf_Internal_Group *) shdr->contents; | |
587 | n_elt = shdr->sh_size / 4; | |
588 | while (--n_elt != 0) | |
589 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 590 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
591 | break; |
592 | if (n_elt != 0) | |
593 | { | |
dbb410c3 AM |
594 | /* Snarf the group name from other member, and |
595 | insert current section in circular list. */ | |
945906ff AM |
596 | elf_group_name (newsect) = elf_group_name (s); |
597 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
598 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
599 | } |
600 | else | |
601 | { | |
dbb410c3 AM |
602 | const char *gname; |
603 | ||
b885599b AM |
604 | gname = group_signature (abfd, shdr); |
605 | if (gname == NULL) | |
b34976b6 | 606 | return FALSE; |
945906ff | 607 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
608 | |
609 | /* Start a circular list with one element. */ | |
945906ff | 610 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 611 | } |
b885599b | 612 | |
9dce4196 AM |
613 | /* If the group section has been created, point to the |
614 | new member. */ | |
dbb410c3 | 615 | if (shdr->bfd_section != NULL) |
945906ff | 616 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 617 | |
dbb410c3 AM |
618 | i = num_group - 1; |
619 | break; | |
620 | } | |
621 | } | |
622 | } | |
623 | ||
945906ff | 624 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 625 | { |
d003868e AM |
626 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
627 | abfd, newsect); | |
dbb410c3 | 628 | } |
b34976b6 | 629 | return TRUE; |
dbb410c3 AM |
630 | } |
631 | ||
3d7f7666 L |
632 | bfd_boolean |
633 | _bfd_elf_setup_group_pointers (bfd *abfd) | |
634 | { | |
635 | unsigned int i; | |
636 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
637 | bfd_boolean result = TRUE; | |
638 | ||
639 | if (num_group == (unsigned) -1) | |
640 | return result; | |
641 | ||
642 | for (i = 0; i < num_group; i++) | |
643 | { | |
644 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
645 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
646 | unsigned int n_elt = shdr->sh_size / 4; | |
647 | ||
648 | while (--n_elt != 0) | |
649 | if ((++idx)->shdr->bfd_section) | |
650 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
651 | else if (idx->shdr->sh_type == SHT_RELA | |
652 | || idx->shdr->sh_type == SHT_REL) | |
653 | /* We won't include relocation sections in section groups in | |
654 | output object files. We adjust the group section size here | |
655 | so that relocatable link will work correctly when | |
656 | relocation sections are in section group in input object | |
657 | files. */ | |
658 | shdr->bfd_section->size -= 4; | |
659 | else | |
660 | { | |
661 | /* There are some unknown sections in the group. */ | |
662 | (*_bfd_error_handler) | |
d003868e AM |
663 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
664 | abfd, | |
3d7f7666 | 665 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
666 | bfd_elf_string_from_elf_section (abfd, |
667 | (elf_elfheader (abfd) | |
668 | ->e_shstrndx), | |
669 | idx->shdr->sh_name), | |
3d7f7666 L |
670 | shdr->bfd_section->name); |
671 | result = FALSE; | |
672 | } | |
673 | } | |
674 | return result; | |
675 | } | |
676 | ||
72adc230 AM |
677 | bfd_boolean |
678 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
679 | { | |
680 | return elf_next_in_group (sec) != NULL; | |
681 | } | |
682 | ||
252b5132 RH |
683 | /* Make a BFD section from an ELF section. We store a pointer to the |
684 | BFD section in the bfd_section field of the header. */ | |
685 | ||
b34976b6 | 686 | bfd_boolean |
217aa764 AM |
687 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
688 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
689 | const char *name, |
690 | int shindex) | |
252b5132 RH |
691 | { |
692 | asection *newsect; | |
693 | flagword flags; | |
9c5bfbb7 | 694 | const struct elf_backend_data *bed; |
252b5132 RH |
695 | |
696 | if (hdr->bfd_section != NULL) | |
697 | { | |
698 | BFD_ASSERT (strcmp (name, | |
699 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 700 | return TRUE; |
252b5132 RH |
701 | } |
702 | ||
703 | newsect = bfd_make_section_anyway (abfd, name); | |
704 | if (newsect == NULL) | |
b34976b6 | 705 | return FALSE; |
252b5132 | 706 | |
1829f4b2 AM |
707 | hdr->bfd_section = newsect; |
708 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 709 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 710 | |
2f89ff8d L |
711 | /* Always use the real type/flags. */ |
712 | elf_section_type (newsect) = hdr->sh_type; | |
713 | elf_section_flags (newsect) = hdr->sh_flags; | |
714 | ||
252b5132 RH |
715 | newsect->filepos = hdr->sh_offset; |
716 | ||
717 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
718 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
719 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 720 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 721 | return FALSE; |
252b5132 RH |
722 | |
723 | flags = SEC_NO_FLAGS; | |
724 | if (hdr->sh_type != SHT_NOBITS) | |
725 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 726 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 727 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
728 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
729 | { | |
730 | flags |= SEC_ALLOC; | |
731 | if (hdr->sh_type != SHT_NOBITS) | |
732 | flags |= SEC_LOAD; | |
733 | } | |
734 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
735 | flags |= SEC_READONLY; | |
736 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
737 | flags |= SEC_CODE; | |
738 | else if ((flags & SEC_LOAD) != 0) | |
739 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
740 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
741 | { | |
742 | flags |= SEC_MERGE; | |
743 | newsect->entsize = hdr->sh_entsize; | |
744 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
745 | flags |= SEC_STRINGS; | |
746 | } | |
dbb410c3 AM |
747 | if (hdr->sh_flags & SHF_GROUP) |
748 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 749 | return FALSE; |
13ae64f3 JJ |
750 | if ((hdr->sh_flags & SHF_TLS) != 0) |
751 | flags |= SEC_THREAD_LOCAL; | |
252b5132 RH |
752 | |
753 | /* The debugging sections appear to be recognized only by name, not | |
754 | any sort of flag. */ | |
7a6cc5fb | 755 | { |
dbf48117 | 756 | static const char *debug_sec_names [] = |
7a6cc5fb NC |
757 | { |
758 | ".debug", | |
759 | ".gnu.linkonce.wi.", | |
760 | ".line", | |
761 | ".stab" | |
762 | }; | |
763 | int i; | |
764 | ||
e0e8c97f | 765 | for (i = ARRAY_SIZE (debug_sec_names); i--;) |
7a6cc5fb NC |
766 | if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0) |
767 | break; | |
768 | ||
769 | if (i >= 0) | |
770 | flags |= SEC_DEBUGGING; | |
771 | } | |
252b5132 RH |
772 | |
773 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
774 | only link a single copy of the section. This is used to support | |
775 | g++. g++ will emit each template expansion in its own section. | |
776 | The symbols will be defined as weak, so that multiple definitions | |
777 | are permitted. The GNU linker extension is to actually discard | |
778 | all but one of the sections. */ | |
b885599b AM |
779 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
780 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
781 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
782 | ||
fa152c49 JW |
783 | bed = get_elf_backend_data (abfd); |
784 | if (bed->elf_backend_section_flags) | |
785 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 786 | return FALSE; |
fa152c49 | 787 | |
252b5132 | 788 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 789 | return FALSE; |
252b5132 RH |
790 | |
791 | if ((flags & SEC_ALLOC) != 0) | |
792 | { | |
793 | Elf_Internal_Phdr *phdr; | |
794 | unsigned int i; | |
795 | ||
796 | /* Look through the phdrs to see if we need to adjust the lma. | |
797 | If all the p_paddr fields are zero, we ignore them, since | |
798 | some ELF linkers produce such output. */ | |
799 | phdr = elf_tdata (abfd)->phdr; | |
800 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
801 | { | |
802 | if (phdr->p_paddr != 0) | |
803 | break; | |
804 | } | |
805 | if (i < elf_elfheader (abfd)->e_phnum) | |
806 | { | |
807 | phdr = elf_tdata (abfd)->phdr; | |
808 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
809 | { | |
e0e8c97f NC |
810 | /* This section is part of this segment if its file |
811 | offset plus size lies within the segment's memory | |
812 | span and, if the section is loaded, the extent of the | |
47d9a591 | 813 | loaded data lies within the extent of the segment. |
bf36db18 NC |
814 | |
815 | Note - we used to check the p_paddr field as well, and | |
816 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 817 | though, as a perfectly valid initialised segment can |
bf36db18 | 818 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 819 | place special significance on the address 0 and |
bf36db18 NC |
820 | executables need to be able to have a segment which |
821 | covers this address. */ | |
252b5132 | 822 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
823 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
824 | && (hdr->sh_offset + hdr->sh_size | |
825 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 826 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
827 | || (hdr->sh_offset + hdr->sh_size |
828 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 829 | { |
dba143ef | 830 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
831 | newsect->lma = (phdr->p_paddr |
832 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
833 | else |
834 | /* We used to use the same adjustment for SEC_LOAD | |
835 | sections, but that doesn't work if the segment | |
836 | is packed with code from multiple VMAs. | |
837 | Instead we calculate the section LMA based on | |
838 | the segment LMA. It is assumed that the | |
839 | segment will contain sections with contiguous | |
840 | LMAs, even if the VMAs are not. */ | |
841 | newsect->lma = (phdr->p_paddr | |
842 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
843 | |
844 | /* With contiguous segments, we can't tell from file | |
845 | offsets whether a section with zero size should | |
846 | be placed at the end of one segment or the | |
847 | beginning of the next. Decide based on vaddr. */ | |
848 | if (hdr->sh_addr >= phdr->p_vaddr | |
849 | && (hdr->sh_addr + hdr->sh_size | |
850 | <= phdr->p_vaddr + phdr->p_memsz)) | |
851 | break; | |
252b5132 RH |
852 | } |
853 | } | |
854 | } | |
855 | } | |
856 | ||
b34976b6 | 857 | return TRUE; |
252b5132 RH |
858 | } |
859 | ||
860 | /* | |
861 | INTERNAL_FUNCTION | |
862 | bfd_elf_find_section | |
863 | ||
864 | SYNOPSIS | |
865 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
866 | ||
867 | DESCRIPTION | |
868 | Helper functions for GDB to locate the string tables. | |
869 | Since BFD hides string tables from callers, GDB needs to use an | |
870 | internal hook to find them. Sun's .stabstr, in particular, | |
871 | isn't even pointed to by the .stab section, so ordinary | |
872 | mechanisms wouldn't work to find it, even if we had some. | |
873 | */ | |
874 | ||
875 | struct elf_internal_shdr * | |
217aa764 | 876 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
877 | { |
878 | Elf_Internal_Shdr **i_shdrp; | |
879 | char *shstrtab; | |
880 | unsigned int max; | |
881 | unsigned int i; | |
882 | ||
883 | i_shdrp = elf_elfsections (abfd); | |
884 | if (i_shdrp != NULL) | |
885 | { | |
9ad5cbcf AM |
886 | shstrtab = bfd_elf_get_str_section (abfd, |
887 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
888 | if (shstrtab != NULL) |
889 | { | |
9ad5cbcf | 890 | max = elf_numsections (abfd); |
252b5132 RH |
891 | for (i = 1; i < max; i++) |
892 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
893 | return i_shdrp[i]; | |
894 | } | |
895 | } | |
896 | return 0; | |
897 | } | |
898 | ||
899 | const char *const bfd_elf_section_type_names[] = { | |
900 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
901 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
902 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
903 | }; | |
904 | ||
1049f94e | 905 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
906 | output, and the reloc is against an external symbol, and nothing |
907 | has given us any additional addend, the resulting reloc will also | |
908 | be against the same symbol. In such a case, we don't want to | |
909 | change anything about the way the reloc is handled, since it will | |
910 | all be done at final link time. Rather than put special case code | |
911 | into bfd_perform_relocation, all the reloc types use this howto | |
912 | function. It just short circuits the reloc if producing | |
1049f94e | 913 | relocatable output against an external symbol. */ |
252b5132 | 914 | |
252b5132 | 915 | bfd_reloc_status_type |
217aa764 AM |
916 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
917 | arelent *reloc_entry, | |
918 | asymbol *symbol, | |
919 | void *data ATTRIBUTE_UNUSED, | |
920 | asection *input_section, | |
921 | bfd *output_bfd, | |
922 | char **error_message ATTRIBUTE_UNUSED) | |
923 | { | |
924 | if (output_bfd != NULL | |
252b5132 RH |
925 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
926 | && (! reloc_entry->howto->partial_inplace | |
927 | || reloc_entry->addend == 0)) | |
928 | { | |
929 | reloc_entry->address += input_section->output_offset; | |
930 | return bfd_reloc_ok; | |
931 | } | |
932 | ||
933 | return bfd_reloc_continue; | |
934 | } | |
935 | \f | |
d3c456e9 JJ |
936 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
937 | ||
938 | static void | |
217aa764 AM |
939 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
940 | asection *sec) | |
d3c456e9 | 941 | { |
68bfbfcc AM |
942 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
943 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
944 | } |
945 | ||
8550eb6e JJ |
946 | /* Finish SHF_MERGE section merging. */ |
947 | ||
b34976b6 | 948 | bfd_boolean |
217aa764 | 949 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 950 | { |
57ceae94 AM |
951 | bfd *ibfd; |
952 | asection *sec; | |
953 | ||
0eddce27 | 954 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 955 | return FALSE; |
57ceae94 AM |
956 | |
957 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
958 | if ((ibfd->flags & DYNAMIC) == 0) | |
959 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
960 | if ((sec->flags & SEC_MERGE) != 0 | |
961 | && !bfd_is_abs_section (sec->output_section)) | |
962 | { | |
963 | struct bfd_elf_section_data *secdata; | |
964 | ||
965 | secdata = elf_section_data (sec); | |
966 | if (! _bfd_add_merge_section (abfd, | |
967 | &elf_hash_table (info)->merge_info, | |
968 | sec, &secdata->sec_info)) | |
969 | return FALSE; | |
970 | else if (secdata->sec_info) | |
971 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
972 | } | |
973 | ||
974 | if (elf_hash_table (info)->merge_info != NULL) | |
975 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 976 | merge_sections_remove_hook); |
b34976b6 | 977 | return TRUE; |
8550eb6e | 978 | } |
2d653fc7 AM |
979 | |
980 | void | |
217aa764 | 981 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
982 | { |
983 | sec->output_section = bfd_abs_section_ptr; | |
984 | sec->output_offset = sec->vma; | |
0eddce27 | 985 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
986 | return; |
987 | ||
68bfbfcc | 988 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 989 | } |
8550eb6e | 990 | \f |
0ac4564e L |
991 | /* Copy the program header and other data from one object module to |
992 | another. */ | |
252b5132 | 993 | |
b34976b6 | 994 | bfd_boolean |
217aa764 | 995 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
996 | { |
997 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
998 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 999 | return TRUE; |
2d502050 L |
1000 | |
1001 | BFD_ASSERT (!elf_flags_init (obfd) | |
1002 | || (elf_elfheader (obfd)->e_flags | |
1003 | == elf_elfheader (ibfd)->e_flags)); | |
1004 | ||
0ac4564e | 1005 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1006 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1007 | elf_flags_init (obfd) = TRUE; |
1008 | return TRUE; | |
2d502050 L |
1009 | } |
1010 | ||
f0b79d91 L |
1011 | /* Print out the program headers. */ |
1012 | ||
b34976b6 | 1013 | bfd_boolean |
217aa764 | 1014 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1015 | { |
217aa764 | 1016 | FILE *f = farg; |
252b5132 RH |
1017 | Elf_Internal_Phdr *p; |
1018 | asection *s; | |
1019 | bfd_byte *dynbuf = NULL; | |
1020 | ||
1021 | p = elf_tdata (abfd)->phdr; | |
1022 | if (p != NULL) | |
1023 | { | |
1024 | unsigned int i, c; | |
1025 | ||
1026 | fprintf (f, _("\nProgram Header:\n")); | |
1027 | c = elf_elfheader (abfd)->e_phnum; | |
1028 | for (i = 0; i < c; i++, p++) | |
1029 | { | |
dc810e39 | 1030 | const char *pt; |
252b5132 RH |
1031 | char buf[20]; |
1032 | ||
1033 | switch (p->p_type) | |
1034 | { | |
dc810e39 AM |
1035 | case PT_NULL: pt = "NULL"; break; |
1036 | case PT_LOAD: pt = "LOAD"; break; | |
1037 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1038 | case PT_INTERP: pt = "INTERP"; break; | |
1039 | case PT_NOTE: pt = "NOTE"; break; | |
1040 | case PT_SHLIB: pt = "SHLIB"; break; | |
1041 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 1042 | case PT_TLS: pt = "TLS"; break; |
65765700 | 1043 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 1044 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 1045 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 1046 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 1047 | } |
dc810e39 | 1048 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1049 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1050 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1051 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1052 | fprintf (f, " paddr 0x"); |
60b89a18 | 1053 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1054 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1055 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1056 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1057 | fprintf (f, " memsz 0x"); |
60b89a18 | 1058 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1059 | fprintf (f, " flags %c%c%c", |
1060 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1061 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1062 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1063 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1064 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1065 | fprintf (f, "\n"); |
1066 | } | |
1067 | } | |
1068 | ||
1069 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1070 | if (s != NULL) | |
1071 | { | |
1072 | int elfsec; | |
dc810e39 | 1073 | unsigned long shlink; |
252b5132 RH |
1074 | bfd_byte *extdyn, *extdynend; |
1075 | size_t extdynsize; | |
217aa764 | 1076 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1077 | |
1078 | fprintf (f, _("\nDynamic Section:\n")); | |
1079 | ||
eea6121a | 1080 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1081 | goto error_return; |
1082 | ||
1083 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1084 | if (elfsec == -1) | |
1085 | goto error_return; | |
dc810e39 | 1086 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1087 | |
1088 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1089 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1090 | ||
1091 | extdyn = dynbuf; | |
eea6121a | 1092 | extdynend = extdyn + s->size; |
252b5132 RH |
1093 | for (; extdyn < extdynend; extdyn += extdynsize) |
1094 | { | |
1095 | Elf_Internal_Dyn dyn; | |
1096 | const char *name; | |
1097 | char ab[20]; | |
b34976b6 | 1098 | bfd_boolean stringp; |
252b5132 | 1099 | |
217aa764 | 1100 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1101 | |
1102 | if (dyn.d_tag == DT_NULL) | |
1103 | break; | |
1104 | ||
b34976b6 | 1105 | stringp = FALSE; |
252b5132 RH |
1106 | switch (dyn.d_tag) |
1107 | { | |
1108 | default: | |
1109 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1110 | name = ab; | |
1111 | break; | |
1112 | ||
b34976b6 | 1113 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1114 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1115 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1116 | case DT_HASH: name = "HASH"; break; | |
1117 | case DT_STRTAB: name = "STRTAB"; break; | |
1118 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1119 | case DT_RELA: name = "RELA"; break; | |
1120 | case DT_RELASZ: name = "RELASZ"; break; | |
1121 | case DT_RELAENT: name = "RELAENT"; break; | |
1122 | case DT_STRSZ: name = "STRSZ"; break; | |
1123 | case DT_SYMENT: name = "SYMENT"; break; | |
1124 | case DT_INIT: name = "INIT"; break; | |
1125 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1126 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1127 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1128 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1129 | case DT_REL: name = "REL"; break; | |
1130 | case DT_RELSZ: name = "RELSZ"; break; | |
1131 | case DT_RELENT: name = "RELENT"; break; | |
1132 | case DT_PLTREL: name = "PLTREL"; break; | |
1133 | case DT_DEBUG: name = "DEBUG"; break; | |
1134 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1135 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1136 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1137 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1138 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1139 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1140 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1141 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1142 | case DT_FLAGS: name = "FLAGS"; break; |
1143 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1144 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1145 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1146 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1147 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1148 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1149 | case DT_FEATURE: name = "FEATURE"; break; | |
1150 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1151 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1152 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1153 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1154 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1155 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1156 | case DT_PLTPAD: name = "PLTPAD"; break; |
1157 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1158 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1159 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1160 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1161 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1162 | case DT_VERSYM: name = "VERSYM"; break; |
1163 | case DT_VERDEF: name = "VERDEF"; break; | |
1164 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1165 | case DT_VERNEED: name = "VERNEED"; break; | |
1166 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1167 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1168 | case DT_USED: name = "USED"; break; |
b34976b6 | 1169 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1170 | } |
1171 | ||
1172 | fprintf (f, " %-11s ", name); | |
1173 | if (! stringp) | |
1174 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1175 | else | |
1176 | { | |
1177 | const char *string; | |
dc810e39 | 1178 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1179 | |
dc810e39 | 1180 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1181 | if (string == NULL) |
1182 | goto error_return; | |
1183 | fprintf (f, "%s", string); | |
1184 | } | |
1185 | fprintf (f, "\n"); | |
1186 | } | |
1187 | ||
1188 | free (dynbuf); | |
1189 | dynbuf = NULL; | |
1190 | } | |
1191 | ||
1192 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1193 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1194 | { | |
fc0e6df6 | 1195 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1196 | return FALSE; |
252b5132 RH |
1197 | } |
1198 | ||
1199 | if (elf_dynverdef (abfd) != 0) | |
1200 | { | |
1201 | Elf_Internal_Verdef *t; | |
1202 | ||
1203 | fprintf (f, _("\nVersion definitions:\n")); | |
1204 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1205 | { | |
1206 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
1207 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
1208 | if (t->vd_auxptr->vda_nextptr != NULL) | |
1209 | { | |
1210 | Elf_Internal_Verdaux *a; | |
1211 | ||
1212 | fprintf (f, "\t"); | |
1213 | for (a = t->vd_auxptr->vda_nextptr; | |
1214 | a != NULL; | |
1215 | a = a->vda_nextptr) | |
1216 | fprintf (f, "%s ", a->vda_nodename); | |
1217 | fprintf (f, "\n"); | |
1218 | } | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | if (elf_dynverref (abfd) != 0) | |
1223 | { | |
1224 | Elf_Internal_Verneed *t; | |
1225 | ||
1226 | fprintf (f, _("\nVersion References:\n")); | |
1227 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1228 | { | |
1229 | Elf_Internal_Vernaux *a; | |
1230 | ||
1231 | fprintf (f, _(" required from %s:\n"), t->vn_filename); | |
1232 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1233 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
1234 | a->vna_flags, a->vna_other, a->vna_nodename); | |
1235 | } | |
1236 | } | |
1237 | ||
b34976b6 | 1238 | return TRUE; |
252b5132 RH |
1239 | |
1240 | error_return: | |
1241 | if (dynbuf != NULL) | |
1242 | free (dynbuf); | |
b34976b6 | 1243 | return FALSE; |
252b5132 RH |
1244 | } |
1245 | ||
1246 | /* Display ELF-specific fields of a symbol. */ | |
1247 | ||
1248 | void | |
217aa764 AM |
1249 | bfd_elf_print_symbol (bfd *abfd, |
1250 | void *filep, | |
1251 | asymbol *symbol, | |
1252 | bfd_print_symbol_type how) | |
252b5132 | 1253 | { |
217aa764 | 1254 | FILE *file = filep; |
252b5132 RH |
1255 | switch (how) |
1256 | { | |
1257 | case bfd_print_symbol_name: | |
1258 | fprintf (file, "%s", symbol->name); | |
1259 | break; | |
1260 | case bfd_print_symbol_more: | |
1261 | fprintf (file, "elf "); | |
60b89a18 | 1262 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1263 | fprintf (file, " %lx", (long) symbol->flags); |
1264 | break; | |
1265 | case bfd_print_symbol_all: | |
1266 | { | |
4e8a9624 AM |
1267 | const char *section_name; |
1268 | const char *name = NULL; | |
9c5bfbb7 | 1269 | const struct elf_backend_data *bed; |
7a13edea | 1270 | unsigned char st_other; |
dbb410c3 | 1271 | bfd_vma val; |
c044fabd | 1272 | |
252b5132 | 1273 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1274 | |
1275 | bed = get_elf_backend_data (abfd); | |
1276 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1277 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1278 | |
1279 | if (name == NULL) | |
1280 | { | |
7ee38065 | 1281 | name = symbol->name; |
217aa764 | 1282 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1283 | } |
1284 | ||
252b5132 RH |
1285 | fprintf (file, " %s\t", section_name); |
1286 | /* Print the "other" value for a symbol. For common symbols, | |
1287 | we've already printed the size; now print the alignment. | |
1288 | For other symbols, we have no specified alignment, and | |
1289 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1290 | if (bfd_is_com_section (symbol->section)) |
1291 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1292 | else | |
1293 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1294 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1295 | |
1296 | /* If we have version information, print it. */ | |
1297 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1298 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1299 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1300 | { | |
1301 | unsigned int vernum; | |
1302 | const char *version_string; | |
1303 | ||
1304 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1305 | ||
1306 | if (vernum == 0) | |
1307 | version_string = ""; | |
1308 | else if (vernum == 1) | |
1309 | version_string = "Base"; | |
1310 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1311 | version_string = | |
1312 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1313 | else | |
1314 | { | |
1315 | Elf_Internal_Verneed *t; | |
1316 | ||
1317 | version_string = ""; | |
1318 | for (t = elf_tdata (abfd)->verref; | |
1319 | t != NULL; | |
1320 | t = t->vn_nextref) | |
1321 | { | |
1322 | Elf_Internal_Vernaux *a; | |
1323 | ||
1324 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1325 | { | |
1326 | if (a->vna_other == vernum) | |
1327 | { | |
1328 | version_string = a->vna_nodename; | |
1329 | break; | |
1330 | } | |
1331 | } | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1336 | fprintf (file, " %-11s", version_string); | |
1337 | else | |
1338 | { | |
1339 | int i; | |
1340 | ||
1341 | fprintf (file, " (%s)", version_string); | |
1342 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1343 | putc (' ', file); | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1348 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1349 | |
7a13edea NC |
1350 | switch (st_other) |
1351 | { | |
1352 | case 0: break; | |
1353 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1354 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1355 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1356 | default: | |
1357 | /* Some other non-defined flags are also present, so print | |
1358 | everything hex. */ | |
1359 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1360 | } | |
252b5132 | 1361 | |
587ff49e | 1362 | fprintf (file, " %s", name); |
252b5132 RH |
1363 | } |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | \f | |
1368 | /* Create an entry in an ELF linker hash table. */ | |
1369 | ||
1370 | struct bfd_hash_entry * | |
217aa764 AM |
1371 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1372 | struct bfd_hash_table *table, | |
1373 | const char *string) | |
252b5132 | 1374 | { |
252b5132 RH |
1375 | /* Allocate the structure if it has not already been allocated by a |
1376 | subclass. */ | |
51b64d56 AM |
1377 | if (entry == NULL) |
1378 | { | |
1379 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1380 | if (entry == NULL) | |
1381 | return entry; | |
1382 | } | |
252b5132 RH |
1383 | |
1384 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1385 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1386 | if (entry != NULL) | |
252b5132 | 1387 | { |
51b64d56 AM |
1388 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1389 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1390 | ||
252b5132 RH |
1391 | /* Set local fields. */ |
1392 | ret->indx = -1; | |
252b5132 | 1393 | ret->dynindx = -1; |
f6e332e6 AM |
1394 | ret->got = ret->plt = htab->init_refcount; |
1395 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) | |
1396 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1397 | /* Assume that we have been called by a non-ELF symbol reader. |
1398 | This flag is then reset by the code which reads an ELF input | |
1399 | file. This ensures that a symbol created by a non-ELF symbol | |
1400 | reader will have the flag set correctly. */ | |
f5385ebf | 1401 | ret->non_elf = 1; |
252b5132 RH |
1402 | } |
1403 | ||
51b64d56 | 1404 | return entry; |
252b5132 RH |
1405 | } |
1406 | ||
2920b85c | 1407 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1408 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1409 | |
c61b8717 | 1410 | void |
9c5bfbb7 | 1411 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1412 | struct elf_link_hash_entry *dir, |
1413 | struct elf_link_hash_entry *ind) | |
2920b85c | 1414 | { |
3c3e9281 | 1415 | bfd_signed_vma tmp; |
b48fa14c | 1416 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1417 | |
2920b85c RH |
1418 | /* Copy down any references that we may have already seen to the |
1419 | symbol which just became indirect. */ | |
1420 | ||
f5385ebf AM |
1421 | dir->ref_dynamic |= ind->ref_dynamic; |
1422 | dir->ref_regular |= ind->ref_regular; | |
1423 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1424 | dir->non_got_ref |= ind->non_got_ref; | |
1425 | dir->needs_plt |= ind->needs_plt; | |
1426 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1427 | |
1e370bd2 | 1428 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1429 | return; |
1430 | ||
51b64d56 | 1431 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1432 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1433 | tmp = dir->got.refcount; |
b48fa14c | 1434 | if (tmp < lowest_valid) |
2920b85c | 1435 | { |
51b64d56 | 1436 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1437 | ind->got.refcount = tmp; |
2920b85c | 1438 | } |
3c3e9281 | 1439 | else |
b48fa14c | 1440 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1441 | |
3c3e9281 | 1442 | tmp = dir->plt.refcount; |
b48fa14c | 1443 | if (tmp < lowest_valid) |
2920b85c | 1444 | { |
51b64d56 | 1445 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1446 | ind->plt.refcount = tmp; |
2920b85c | 1447 | } |
3c3e9281 | 1448 | else |
b48fa14c | 1449 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1450 | |
1451 | if (dir->dynindx == -1) | |
1452 | { | |
1453 | dir->dynindx = ind->dynindx; | |
1454 | dir->dynstr_index = ind->dynstr_index; | |
1455 | ind->dynindx = -1; | |
1456 | ind->dynstr_index = 0; | |
1457 | } | |
3c3e9281 AM |
1458 | else |
1459 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1460 | } |
1461 | ||
c61b8717 | 1462 | void |
217aa764 AM |
1463 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1464 | struct elf_link_hash_entry *h, | |
1465 | bfd_boolean force_local) | |
2920b85c | 1466 | { |
5cab59f6 | 1467 | h->plt = elf_hash_table (info)->init_offset; |
f5385ebf | 1468 | h->needs_plt = 0; |
e5094212 AM |
1469 | if (force_local) |
1470 | { | |
f5385ebf | 1471 | h->forced_local = 1; |
e5094212 AM |
1472 | if (h->dynindx != -1) |
1473 | { | |
1474 | h->dynindx = -1; | |
1475 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1476 | h->dynstr_index); | |
1477 | } | |
1478 | } | |
2920b85c RH |
1479 | } |
1480 | ||
252b5132 RH |
1481 | /* Initialize an ELF linker hash table. */ |
1482 | ||
b34976b6 | 1483 | bfd_boolean |
217aa764 AM |
1484 | _bfd_elf_link_hash_table_init |
1485 | (struct elf_link_hash_table *table, | |
1486 | bfd *abfd, | |
1487 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1488 | struct bfd_hash_table *, | |
1489 | const char *)) | |
252b5132 | 1490 | { |
b34976b6 | 1491 | bfd_boolean ret; |
8ea2e4bd | 1492 | |
b34976b6 | 1493 | table->dynamic_sections_created = FALSE; |
252b5132 | 1494 | table->dynobj = NULL; |
963f13ec AO |
1495 | /* Make sure can_refcount is extended to the width and signedness of |
1496 | init_refcount before we subtract one from it. */ | |
5cab59f6 AM |
1497 | table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; |
1498 | table->init_refcount.refcount -= 1; | |
1499 | table->init_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1500 | /* The first dynamic symbol is a dummy. */ |
1501 | table->dynsymcount = 1; | |
1502 | table->dynstr = NULL; | |
1503 | table->bucketcount = 0; | |
1504 | table->needed = NULL; | |
1505 | table->hgot = NULL; | |
f5fa8ca2 | 1506 | table->merge_info = NULL; |
3722b82f | 1507 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1508 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1509 | table->dynlocal = NULL; |
73722af0 | 1510 | table->runpath = NULL; |
e1918d23 AM |
1511 | table->tls_sec = NULL; |
1512 | table->tls_size = 0; | |
73722af0 | 1513 | table->loaded = NULL; |
67687978 | 1514 | table->is_relocatable_executable = FALSE; |
73722af0 AM |
1515 | |
1516 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1517 | table->root.type = bfd_link_elf_hash_table; |
1518 | ||
1519 | return ret; | |
252b5132 RH |
1520 | } |
1521 | ||
1522 | /* Create an ELF linker hash table. */ | |
1523 | ||
1524 | struct bfd_link_hash_table * | |
217aa764 | 1525 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1526 | { |
1527 | struct elf_link_hash_table *ret; | |
dc810e39 | 1528 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1529 | |
217aa764 AM |
1530 | ret = bfd_malloc (amt); |
1531 | if (ret == NULL) | |
252b5132 RH |
1532 | return NULL; |
1533 | ||
1534 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1535 | { | |
e2d34d7d | 1536 | free (ret); |
252b5132 RH |
1537 | return NULL; |
1538 | } | |
1539 | ||
1540 | return &ret->root; | |
1541 | } | |
1542 | ||
1543 | /* This is a hook for the ELF emulation code in the generic linker to | |
1544 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1545 | entry for a dynamic object. */ |
252b5132 RH |
1546 | |
1547 | void | |
217aa764 | 1548 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1549 | { |
1550 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1551 | && bfd_get_format (abfd) == bfd_object) | |
1552 | elf_dt_name (abfd) = name; | |
1553 | } | |
1554 | ||
e56f61be L |
1555 | int |
1556 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1557 | { | |
1558 | int lib_class; | |
1559 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1560 | && bfd_get_format (abfd) == bfd_object) | |
1561 | lib_class = elf_dyn_lib_class (abfd); | |
1562 | else | |
1563 | lib_class = 0; | |
1564 | return lib_class; | |
1565 | } | |
1566 | ||
74816898 | 1567 | void |
4a43e768 | 1568 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1569 | { |
1570 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1571 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1572 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1573 | } |
1574 | ||
252b5132 RH |
1575 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1576 | the linker ELF emulation code. */ | |
1577 | ||
1578 | struct bfd_link_needed_list * | |
217aa764 AM |
1579 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1580 | struct bfd_link_info *info) | |
252b5132 | 1581 | { |
0eddce27 | 1582 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1583 | return NULL; |
1584 | return elf_hash_table (info)->needed; | |
1585 | } | |
1586 | ||
a963dc6a L |
1587 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1588 | hook for the linker ELF emulation code. */ | |
1589 | ||
1590 | struct bfd_link_needed_list * | |
217aa764 AM |
1591 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1592 | struct bfd_link_info *info) | |
a963dc6a | 1593 | { |
0eddce27 | 1594 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1595 | return NULL; |
1596 | return elf_hash_table (info)->runpath; | |
1597 | } | |
1598 | ||
252b5132 RH |
1599 | /* Get the name actually used for a dynamic object for a link. This |
1600 | is the SONAME entry if there is one. Otherwise, it is the string | |
1601 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1602 | ||
1603 | const char * | |
217aa764 | 1604 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1605 | { |
1606 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1607 | && bfd_get_format (abfd) == bfd_object) | |
1608 | return elf_dt_name (abfd); | |
1609 | return NULL; | |
1610 | } | |
1611 | ||
1612 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1613 | the ELF linker emulation code. */ | |
1614 | ||
b34976b6 | 1615 | bfd_boolean |
217aa764 AM |
1616 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1617 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1618 | { |
1619 | asection *s; | |
1620 | bfd_byte *dynbuf = NULL; | |
1621 | int elfsec; | |
dc810e39 | 1622 | unsigned long shlink; |
252b5132 RH |
1623 | bfd_byte *extdyn, *extdynend; |
1624 | size_t extdynsize; | |
217aa764 | 1625 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1626 | |
1627 | *pneeded = NULL; | |
1628 | ||
1629 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1630 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1631 | return TRUE; |
252b5132 RH |
1632 | |
1633 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1634 | if (s == NULL || s->size == 0) |
b34976b6 | 1635 | return TRUE; |
252b5132 | 1636 | |
eea6121a | 1637 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1638 | goto error_return; |
1639 | ||
1640 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1641 | if (elfsec == -1) | |
1642 | goto error_return; | |
1643 | ||
dc810e39 | 1644 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1645 | |
1646 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1647 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1648 | ||
1649 | extdyn = dynbuf; | |
eea6121a | 1650 | extdynend = extdyn + s->size; |
252b5132 RH |
1651 | for (; extdyn < extdynend; extdyn += extdynsize) |
1652 | { | |
1653 | Elf_Internal_Dyn dyn; | |
1654 | ||
217aa764 | 1655 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1656 | |
1657 | if (dyn.d_tag == DT_NULL) | |
1658 | break; | |
1659 | ||
1660 | if (dyn.d_tag == DT_NEEDED) | |
1661 | { | |
1662 | const char *string; | |
1663 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1664 | unsigned int tagv = dyn.d_un.d_val; |
1665 | bfd_size_type amt; | |
252b5132 | 1666 | |
dc810e39 | 1667 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1668 | if (string == NULL) |
1669 | goto error_return; | |
1670 | ||
dc810e39 | 1671 | amt = sizeof *l; |
217aa764 | 1672 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1673 | if (l == NULL) |
1674 | goto error_return; | |
1675 | ||
1676 | l->by = abfd; | |
1677 | l->name = string; | |
1678 | l->next = *pneeded; | |
1679 | *pneeded = l; | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | free (dynbuf); | |
1684 | ||
b34976b6 | 1685 | return TRUE; |
252b5132 RH |
1686 | |
1687 | error_return: | |
1688 | if (dynbuf != NULL) | |
1689 | free (dynbuf); | |
b34976b6 | 1690 | return FALSE; |
252b5132 RH |
1691 | } |
1692 | \f | |
1693 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1694 | ||
1695 | struct bfd_strtab_hash * | |
217aa764 | 1696 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1697 | { |
1698 | struct bfd_strtab_hash *ret; | |
1699 | ||
1700 | ret = _bfd_stringtab_init (); | |
1701 | if (ret != NULL) | |
1702 | { | |
1703 | bfd_size_type loc; | |
1704 | ||
b34976b6 | 1705 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1706 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1707 | if (loc == (bfd_size_type) -1) | |
1708 | { | |
1709 | _bfd_stringtab_free (ret); | |
1710 | ret = NULL; | |
1711 | } | |
1712 | } | |
1713 | return ret; | |
1714 | } | |
1715 | \f | |
1716 | /* ELF .o/exec file reading */ | |
1717 | ||
c044fabd | 1718 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1719 | |
b34976b6 | 1720 | bfd_boolean |
217aa764 | 1721 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1722 | { |
1723 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1724 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1725 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1726 | const char *name; |
252b5132 | 1727 | |
1b3a8575 AM |
1728 | name = bfd_elf_string_from_elf_section (abfd, |
1729 | elf_elfheader (abfd)->e_shstrndx, | |
1730 | hdr->sh_name); | |
252b5132 RH |
1731 | |
1732 | switch (hdr->sh_type) | |
1733 | { | |
1734 | case SHT_NULL: | |
1735 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1736 | return TRUE; |
252b5132 RH |
1737 | |
1738 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1739 | case SHT_NOBITS: /* .bss section. */ |
1740 | case SHT_HASH: /* .hash section. */ | |
1741 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1742 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1743 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1744 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1745 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
6dc132d9 | 1746 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1747 | |
797fc050 | 1748 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1749 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1750 | return FALSE; |
797fc050 AM |
1751 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1752 | { | |
1753 | Elf_Internal_Shdr *dynsymhdr; | |
1754 | ||
1755 | /* The shared libraries distributed with hpux11 have a bogus | |
1756 | sh_link field for the ".dynamic" section. Find the | |
1757 | string table for the ".dynsym" section instead. */ | |
1758 | if (elf_dynsymtab (abfd) != 0) | |
1759 | { | |
1760 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1761 | hdr->sh_link = dynsymhdr->sh_link; | |
1762 | } | |
1763 | else | |
1764 | { | |
1765 | unsigned int i, num_sec; | |
1766 | ||
1767 | num_sec = elf_numsections (abfd); | |
1768 | for (i = 1; i < num_sec; i++) | |
1769 | { | |
1770 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1771 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1772 | { | |
1773 | hdr->sh_link = dynsymhdr->sh_link; | |
1774 | break; | |
1775 | } | |
1776 | } | |
1777 | } | |
1778 | } | |
1779 | break; | |
1780 | ||
252b5132 RH |
1781 | case SHT_SYMTAB: /* A symbol table */ |
1782 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1783 | return TRUE; |
252b5132 RH |
1784 | |
1785 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1786 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1787 | elf_onesymtab (abfd) = shindex; | |
1788 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1789 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1790 | abfd->flags |= HAS_SYMS; | |
1791 | ||
1792 | /* Sometimes a shared object will map in the symbol table. If | |
1793 | SHF_ALLOC is set, and this is a shared object, then we also | |
1794 | treat this section as a BFD section. We can not base the | |
1795 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1796 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1797 | linker. */ |
1798 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1799 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1800 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1801 | shindex)) | |
b34976b6 | 1802 | return FALSE; |
252b5132 | 1803 | |
1b3a8575 AM |
1804 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1805 | can't read symbols without that section loaded as well. It | |
1806 | is most likely specified by the next section header. */ | |
1807 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1808 | { | |
1809 | unsigned int i, num_sec; | |
1810 | ||
1811 | num_sec = elf_numsections (abfd); | |
1812 | for (i = shindex + 1; i < num_sec; i++) | |
1813 | { | |
1814 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1815 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1816 | && hdr2->sh_link == shindex) | |
1817 | break; | |
1818 | } | |
1819 | if (i == num_sec) | |
1820 | for (i = 1; i < shindex; i++) | |
1821 | { | |
1822 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1823 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1824 | && hdr2->sh_link == shindex) | |
1825 | break; | |
1826 | } | |
1827 | if (i != shindex) | |
1828 | return bfd_section_from_shdr (abfd, i); | |
1829 | } | |
b34976b6 | 1830 | return TRUE; |
252b5132 RH |
1831 | |
1832 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1833 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1834 | return TRUE; |
252b5132 RH |
1835 | |
1836 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1837 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1838 | elf_dynsymtab (abfd) = shindex; | |
1839 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1840 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1841 | abfd->flags |= HAS_SYMS; | |
1842 | ||
1843 | /* Besides being a symbol table, we also treat this as a regular | |
1844 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1845 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1846 | |
9ad5cbcf AM |
1847 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1848 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1849 | return TRUE; |
9ad5cbcf | 1850 | |
1b3a8575 | 1851 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1852 | elf_symtab_shndx (abfd) = shindex; |
1853 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1854 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1855 | return TRUE; |
9ad5cbcf | 1856 | |
252b5132 RH |
1857 | case SHT_STRTAB: /* A string table */ |
1858 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1859 | return TRUE; |
252b5132 RH |
1860 | if (ehdr->e_shstrndx == shindex) |
1861 | { | |
1862 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1863 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1864 | return TRUE; |
252b5132 | 1865 | } |
1b3a8575 AM |
1866 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1867 | { | |
1868 | symtab_strtab: | |
1869 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1870 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1871 | return TRUE; | |
1872 | } | |
1873 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1874 | { | |
1875 | dynsymtab_strtab: | |
1876 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1877 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1878 | elf_elfsections (abfd)[shindex] = hdr; | |
1879 | /* We also treat this as a regular section, so that objcopy | |
1880 | can handle it. */ | |
6dc132d9 L |
1881 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1882 | shindex); | |
1b3a8575 | 1883 | } |
252b5132 | 1884 | |
1b3a8575 AM |
1885 | /* If the string table isn't one of the above, then treat it as a |
1886 | regular section. We need to scan all the headers to be sure, | |
1887 | just in case this strtab section appeared before the above. */ | |
1888 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1889 | { | |
1890 | unsigned int i, num_sec; | |
252b5132 | 1891 | |
1b3a8575 AM |
1892 | num_sec = elf_numsections (abfd); |
1893 | for (i = 1; i < num_sec; i++) | |
1894 | { | |
1895 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1896 | if (hdr2->sh_link == shindex) | |
1897 | { | |
1898 | if (! bfd_section_from_shdr (abfd, i)) | |
1899 | return FALSE; | |
1900 | if (elf_onesymtab (abfd) == i) | |
1901 | goto symtab_strtab; | |
1902 | if (elf_dynsymtab (abfd) == i) | |
1903 | goto dynsymtab_strtab; | |
1904 | } | |
1905 | } | |
1906 | } | |
6dc132d9 | 1907 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1908 | |
1909 | case SHT_REL: | |
1910 | case SHT_RELA: | |
1911 | /* *These* do a lot of work -- but build no sections! */ | |
1912 | { | |
1913 | asection *target_sect; | |
1914 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1915 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1916 | |
03ae5f59 | 1917 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1918 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1919 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1920 | { |
1921 | ((*_bfd_error_handler) | |
d003868e AM |
1922 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1923 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1924 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1925 | shindex); | |
03ae5f59 ILT |
1926 | } |
1927 | ||
252b5132 RH |
1928 | /* For some incomprehensible reason Oracle distributes |
1929 | libraries for Solaris in which some of the objects have | |
1930 | bogus sh_link fields. It would be nice if we could just | |
1931 | reject them, but, unfortunately, some people need to use | |
1932 | them. We scan through the section headers; if we find only | |
1933 | one suitable symbol table, we clobber the sh_link to point | |
1934 | to it. I hope this doesn't break anything. */ | |
1935 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1936 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1937 | { | |
9ad5cbcf | 1938 | unsigned int scan; |
252b5132 RH |
1939 | int found; |
1940 | ||
1941 | found = 0; | |
9ad5cbcf | 1942 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1943 | { |
1944 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1945 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1946 | { | |
1947 | if (found != 0) | |
1948 | { | |
1949 | found = 0; | |
1950 | break; | |
1951 | } | |
1952 | found = scan; | |
1953 | } | |
1954 | } | |
1955 | if (found != 0) | |
1956 | hdr->sh_link = found; | |
1957 | } | |
1958 | ||
1959 | /* Get the symbol table. */ | |
1b3a8575 AM |
1960 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1961 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1962 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1963 | return FALSE; |
252b5132 RH |
1964 | |
1965 | /* If this reloc section does not use the main symbol table we | |
1966 | don't treat it as a reloc section. BFD can't adequately | |
1967 | represent such a section, so at least for now, we don't | |
c044fabd | 1968 | try. We just present it as a normal section. We also |
60bcf0fa | 1969 | can't use it as a reloc section if it points to the null |
c044fabd | 1970 | section. */ |
60bcf0fa | 1971 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
6dc132d9 L |
1972 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1973 | shindex); | |
252b5132 RH |
1974 | |
1975 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1976 | return FALSE; |
252b5132 RH |
1977 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1978 | if (target_sect == NULL) | |
b34976b6 | 1979 | return FALSE; |
252b5132 RH |
1980 | |
1981 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1982 | || target_sect->reloc_count == 0) | |
1983 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1984 | else | |
1985 | { | |
dc810e39 | 1986 | bfd_size_type amt; |
252b5132 | 1987 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1988 | amt = sizeof (*hdr2); |
217aa764 | 1989 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
1990 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1991 | } | |
1992 | *hdr2 = *hdr; | |
1993 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1994 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1995 | target_sect->flags |= SEC_RELOC; |
1996 | target_sect->relocation = NULL; | |
1997 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1998 | /* In the section to which the relocations apply, mark whether |
1999 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2000 | if (hdr->sh_size != 0) |
68bfbfcc | 2001 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2002 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2003 | return TRUE; |
252b5132 RH |
2004 | } |
2005 | break; | |
2006 | ||
2007 | case SHT_GNU_verdef: | |
2008 | elf_dynverdef (abfd) = shindex; | |
2009 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2010 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2011 | break; |
2012 | ||
2013 | case SHT_GNU_versym: | |
2014 | elf_dynversym (abfd) = shindex; | |
2015 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2016 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2017 | break; |
2018 | ||
2019 | case SHT_GNU_verneed: | |
2020 | elf_dynverref (abfd) = shindex; | |
2021 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2022 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2023 | break; |
2024 | ||
2025 | case SHT_SHLIB: | |
b34976b6 | 2026 | return TRUE; |
252b5132 | 2027 | |
dbb410c3 | 2028 | case SHT_GROUP: |
b885599b AM |
2029 | /* We need a BFD section for objcopy and relocatable linking, |
2030 | and it's handy to have the signature available as the section | |
2031 | name. */ | |
2032 | name = group_signature (abfd, hdr); | |
2033 | if (name == NULL) | |
b34976b6 | 2034 | return FALSE; |
6dc132d9 | 2035 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2036 | return FALSE; |
dbb410c3 AM |
2037 | if (hdr->contents != NULL) |
2038 | { | |
2039 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2040 | unsigned int n_elt = hdr->sh_size / 4; | |
2041 | asection *s; | |
2042 | ||
b885599b AM |
2043 | if (idx->flags & GRP_COMDAT) |
2044 | hdr->bfd_section->flags | |
2045 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2046 | ||
45c5e9ed L |
2047 | /* We try to keep the same section order as it comes in. */ |
2048 | idx += n_elt; | |
dbb410c3 | 2049 | while (--n_elt != 0) |
45c5e9ed | 2050 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2051 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2052 | { |
945906ff | 2053 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2054 | break; |
2055 | } | |
2056 | } | |
2057 | break; | |
2058 | ||
252b5132 RH |
2059 | default: |
2060 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2061 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2062 | shindex); | |
252b5132 RH |
2063 | } |
2064 | ||
b34976b6 | 2065 | return TRUE; |
252b5132 RH |
2066 | } |
2067 | ||
ec338859 AM |
2068 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2069 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2070 | ||
2071 | asection * | |
217aa764 AM |
2072 | bfd_section_from_r_symndx (bfd *abfd, |
2073 | struct sym_sec_cache *cache, | |
2074 | asection *sec, | |
2075 | unsigned long r_symndx) | |
ec338859 | 2076 | { |
ec338859 | 2077 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2078 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2079 | Elf_External_Sym_Shndx eshndx; | |
2080 | Elf_Internal_Sym isym; | |
ec338859 AM |
2081 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2082 | ||
2083 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2084 | return cache->sec[ent]; | |
2085 | ||
2086 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2087 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2088 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2089 | return NULL; |
9ad5cbcf | 2090 | |
ec338859 AM |
2091 | if (cache->abfd != abfd) |
2092 | { | |
2093 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2094 | cache->abfd = abfd; | |
2095 | } | |
2096 | cache->indx[ent] = r_symndx; | |
2097 | cache->sec[ent] = sec; | |
50bc7936 AM |
2098 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2099 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2100 | { |
2101 | asection *s; | |
6cdc0ccc | 2102 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2103 | if (s != NULL) |
2104 | cache->sec[ent] = s; | |
2105 | } | |
2106 | return cache->sec[ent]; | |
2107 | } | |
2108 | ||
252b5132 RH |
2109 | /* Given an ELF section number, retrieve the corresponding BFD |
2110 | section. */ | |
2111 | ||
2112 | asection * | |
217aa764 | 2113 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2114 | { |
9ad5cbcf | 2115 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2116 | return NULL; |
2117 | return elf_elfsections (abfd)[index]->bfd_section; | |
2118 | } | |
2119 | ||
7f4d3958 | 2120 | static struct bfd_elf_special_section const special_sections_b[] = |
2f89ff8d | 2121 | { |
7dcb9820 | 2122 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7f4d3958 L |
2123 | { NULL, 0, 0, 0, 0 } |
2124 | }; | |
2125 | ||
2126 | static struct bfd_elf_special_section const special_sections_c[] = | |
2127 | { | |
7dcb9820 | 2128 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
7f4d3958 L |
2129 | { NULL, 0, 0, 0, 0 } |
2130 | }; | |
2131 | ||
2132 | static struct bfd_elf_special_section const special_sections_d[] = | |
2133 | { | |
7dcb9820 AM |
2134 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2135 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2136 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
7dcb9820 AM |
2137 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, |
2138 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2139 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2140 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2141 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2142 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2143 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
7f4d3958 L |
2144 | { NULL, 0, 0, 0, 0 } |
2145 | }; | |
2146 | ||
2147 | static struct bfd_elf_special_section const special_sections_f[] = | |
2148 | { | |
2149 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2150 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2151 | { NULL, 0, 0, 0, 0 } | |
2152 | }; | |
2153 | ||
2154 | static struct bfd_elf_special_section const special_sections_g[] = | |
2155 | { | |
2156 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
7dcb9820 | 2157 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2158 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, |
2159 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2160 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
7f4d3958 L |
2161 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2162 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
2163 | { NULL, 0, 0, 0, 0 } | |
2164 | }; | |
2165 | ||
2166 | static struct bfd_elf_special_section const special_sections_h[] = | |
2167 | { | |
2168 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2169 | { NULL, 0, 0, 0, 0 } | |
2170 | }; | |
2171 | ||
2172 | static struct bfd_elf_special_section const special_sections_i[] = | |
2173 | { | |
2174 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2175 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2176 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2177 | { NULL, 0, 0, 0, 0 } | |
2178 | }; | |
2179 | ||
2180 | static struct bfd_elf_special_section const special_sections_l[] = | |
2181 | { | |
2182 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2183 | { NULL, 0, 0, 0, 0 } | |
2184 | }; | |
2185 | ||
2186 | static struct bfd_elf_special_section const special_sections_n[] = | |
2187 | { | |
45c5e9ed | 2188 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 | 2189 | { ".note", 5, -1, SHT_NOTE, 0 }, |
7f4d3958 L |
2190 | { NULL, 0, 0, 0, 0 } |
2191 | }; | |
2192 | ||
2193 | static struct bfd_elf_special_section const special_sections_p[] = | |
2194 | { | |
2195 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2196 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2197 | { NULL, 0, 0, 0, 0 } | |
2198 | }; | |
2199 | ||
2200 | static struct bfd_elf_special_section const special_sections_r[] = | |
2201 | { | |
2202 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2203 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
7dcb9820 AM |
2204 | { ".rela", 5, -1, SHT_RELA, 0 }, |
2205 | { ".rel", 4, -1, SHT_REL, 0 }, | |
7f4d3958 L |
2206 | { NULL, 0, 0, 0, 0 } |
2207 | }; | |
2208 | ||
2209 | static struct bfd_elf_special_section const special_sections_s[] = | |
2210 | { | |
2211 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2212 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2213 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
7dcb9820 AM |
2214 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, |
2215 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2216 | }; |
2217 | ||
7f4d3958 L |
2218 | static struct bfd_elf_special_section const special_sections_t[] = |
2219 | { | |
2220 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2221 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2222 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2223 | { NULL, 0, 0, 0, 0 } | |
2224 | }; | |
2225 | ||
2226 | static struct bfd_elf_special_section const *special_sections [27] = | |
2227 | { | |
2228 | NULL, /* 'a' */ | |
2229 | special_sections_b, /* 'b' */ | |
2230 | special_sections_c, /* 'b' */ | |
2231 | special_sections_d, /* 'd' */ | |
2232 | NULL, /* 'e' */ | |
2233 | special_sections_f, /* 'f' */ | |
2234 | special_sections_g, /* 'g' */ | |
2235 | special_sections_h, /* 'h' */ | |
2236 | special_sections_i, /* 'i' */ | |
2237 | NULL, /* 'j' */ | |
2238 | NULL, /* 'k' */ | |
2239 | special_sections_l, /* 'l' */ | |
2240 | NULL, /* 'm' */ | |
2241 | special_sections_n, /* 'n' */ | |
2242 | NULL, /* 'o' */ | |
2243 | special_sections_p, /* 'p' */ | |
2244 | NULL, /* 'q' */ | |
2245 | special_sections_r, /* 'r' */ | |
2246 | special_sections_s, /* 's' */ | |
2247 | special_sections_t, /* 't' */ | |
2248 | NULL, /* 'u' */ | |
2249 | NULL, /* 'v' */ | |
2250 | NULL, /* 'w' */ | |
2251 | NULL, /* 'x' */ | |
2252 | NULL, /* 'y' */ | |
2253 | NULL, /* 'z' */ | |
2254 | NULL /* other */ | |
2255 | }; | |
2256 | ||
2f89ff8d L |
2257 | static const struct bfd_elf_special_section * |
2258 | get_special_section (const char *name, | |
7f4d3958 | 2259 | const struct bfd_elf_special_section **special_sections_p, |
2f89ff8d L |
2260 | unsigned int rela) |
2261 | { | |
2262 | int i; | |
7f4d3958 L |
2263 | int len; |
2264 | const struct bfd_elf_special_section *special_sections; | |
2265 | ||
2266 | if (name [0] == '.') | |
2267 | { | |
2268 | i = name [1] - 'a'; | |
2269 | if (i < 0 || i > 25) | |
2270 | i = 26; | |
2271 | } | |
2272 | else | |
2273 | i = 26; | |
2274 | ||
2275 | special_sections = special_sections_p [i]; | |
2276 | ||
2277 | if (!special_sections) | |
2278 | return special_sections; | |
2279 | ||
2280 | len= strlen (name); | |
2f89ff8d L |
2281 | |
2282 | for (i = 0; special_sections[i].prefix != NULL; i++) | |
7dcb9820 AM |
2283 | { |
2284 | int suffix_len; | |
2285 | int prefix_len = special_sections[i].prefix_length; | |
2286 | ||
2287 | if (len < prefix_len) | |
2288 | continue; | |
2289 | if (memcmp (name, special_sections[i].prefix, prefix_len) != 0) | |
2290 | continue; | |
2291 | ||
2292 | suffix_len = special_sections[i].suffix_length; | |
2293 | if (suffix_len <= 0) | |
2294 | { | |
2295 | if (name[prefix_len] != 0) | |
2296 | { | |
2297 | if (suffix_len == 0) | |
2298 | continue; | |
2299 | if (name[prefix_len] != '.' | |
2300 | && (suffix_len == -2 | |
2301 | || (rela && special_sections[i].type == SHT_REL))) | |
2302 | continue; | |
2303 | } | |
2304 | } | |
2305 | else | |
2306 | { | |
2307 | if (len < prefix_len + suffix_len) | |
2308 | continue; | |
2309 | if (memcmp (name + len - suffix_len, | |
2310 | special_sections[i].prefix + prefix_len, | |
2311 | suffix_len) != 0) | |
2312 | continue; | |
2313 | } | |
2f89ff8d | 2314 | return &special_sections[i]; |
7dcb9820 | 2315 | } |
2f89ff8d L |
2316 | |
2317 | return NULL; | |
2318 | } | |
2319 | ||
7dcb9820 AM |
2320 | const struct bfd_elf_special_section * |
2321 | _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) | |
2f89ff8d | 2322 | { |
9c5bfbb7 | 2323 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7dcb9820 | 2324 | const struct bfd_elf_special_section *ssect = NULL; |
2f89ff8d L |
2325 | |
2326 | /* See if this is one of the special sections. */ | |
2327 | if (name) | |
2328 | { | |
9c5bfbb7 | 2329 | unsigned int rela = bed->default_use_rela_p; |
2f89ff8d L |
2330 | |
2331 | if (bed->special_sections) | |
2332 | ssect = get_special_section (name, bed->special_sections, rela); | |
2333 | ||
2334 | if (! ssect) | |
2335 | ssect = get_special_section (name, special_sections, rela); | |
2f89ff8d L |
2336 | } |
2337 | ||
7dcb9820 | 2338 | return ssect; |
2f89ff8d L |
2339 | } |
2340 | ||
b34976b6 | 2341 | bfd_boolean |
217aa764 | 2342 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2343 | { |
2344 | struct bfd_elf_section_data *sdata; | |
7dcb9820 | 2345 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2346 | |
f0abc2a1 AM |
2347 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2348 | if (sdata == NULL) | |
2349 | { | |
217aa764 | 2350 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2351 | if (sdata == NULL) |
2352 | return FALSE; | |
217aa764 | 2353 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2354 | } |
bf572ba0 | 2355 | |
3496cb2a L |
2356 | /* When we read a file, we don't need section type and flags unless |
2357 | it is a linker created section. They will be overridden in | |
2358 | _bfd_elf_make_section_from_shdr anyway. */ | |
2359 | if (abfd->direction != read_direction | |
2360 | || (sec->flags & SEC_LINKER_CREATED) != 0) | |
2f89ff8d | 2361 | { |
a31501e9 L |
2362 | ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); |
2363 | if (ssect != NULL) | |
2364 | { | |
2365 | elf_section_type (sec) = ssect->type; | |
2366 | elf_section_flags (sec) = ssect->attr; | |
2367 | } | |
2f89ff8d L |
2368 | } |
2369 | ||
bf572ba0 | 2370 | /* Indicate whether or not this section should use RELA relocations. */ |
68bfbfcc | 2371 | sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; |
bf572ba0 | 2372 | |
b34976b6 | 2373 | return TRUE; |
252b5132 RH |
2374 | } |
2375 | ||
2376 | /* Create a new bfd section from an ELF program header. | |
2377 | ||
2378 | Since program segments have no names, we generate a synthetic name | |
2379 | of the form segment<NUM>, where NUM is generally the index in the | |
2380 | program header table. For segments that are split (see below) we | |
2381 | generate the names segment<NUM>a and segment<NUM>b. | |
2382 | ||
2383 | Note that some program segments may have a file size that is different than | |
2384 | (less than) the memory size. All this means is that at execution the | |
2385 | system must allocate the amount of memory specified by the memory size, | |
2386 | but only initialize it with the first "file size" bytes read from the | |
2387 | file. This would occur for example, with program segments consisting | |
2388 | of combined data+bss. | |
2389 | ||
2390 | To handle the above situation, this routine generates TWO bfd sections | |
2391 | for the single program segment. The first has the length specified by | |
2392 | the file size of the segment, and the second has the length specified | |
2393 | by the difference between the two sizes. In effect, the segment is split | |
2394 | into it's initialized and uninitialized parts. | |
2395 | ||
2396 | */ | |
2397 | ||
b34976b6 | 2398 | bfd_boolean |
217aa764 AM |
2399 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2400 | Elf_Internal_Phdr *hdr, | |
2401 | int index, | |
2402 | const char *typename) | |
252b5132 RH |
2403 | { |
2404 | asection *newsect; | |
2405 | char *name; | |
2406 | char namebuf[64]; | |
d4c88bbb | 2407 | size_t len; |
252b5132 RH |
2408 | int split; |
2409 | ||
2410 | split = ((hdr->p_memsz > 0) | |
2411 | && (hdr->p_filesz > 0) | |
2412 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2413 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2414 | len = strlen (namebuf) + 1; |
217aa764 | 2415 | name = bfd_alloc (abfd, len); |
252b5132 | 2416 | if (!name) |
b34976b6 | 2417 | return FALSE; |
d4c88bbb | 2418 | memcpy (name, namebuf, len); |
252b5132 RH |
2419 | newsect = bfd_make_section (abfd, name); |
2420 | if (newsect == NULL) | |
b34976b6 | 2421 | return FALSE; |
252b5132 RH |
2422 | newsect->vma = hdr->p_vaddr; |
2423 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2424 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2425 | newsect->filepos = hdr->p_offset; |
2426 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2427 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2428 | if (hdr->p_type == PT_LOAD) |
2429 | { | |
2430 | newsect->flags |= SEC_ALLOC; | |
2431 | newsect->flags |= SEC_LOAD; | |
2432 | if (hdr->p_flags & PF_X) | |
2433 | { | |
2434 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2435 | may be data. */ |
252b5132 RH |
2436 | newsect->flags |= SEC_CODE; |
2437 | } | |
2438 | } | |
2439 | if (!(hdr->p_flags & PF_W)) | |
2440 | { | |
2441 | newsect->flags |= SEC_READONLY; | |
2442 | } | |
2443 | ||
2444 | if (split) | |
2445 | { | |
27ac83bf | 2446 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2447 | len = strlen (namebuf) + 1; |
217aa764 | 2448 | name = bfd_alloc (abfd, len); |
252b5132 | 2449 | if (!name) |
b34976b6 | 2450 | return FALSE; |
d4c88bbb | 2451 | memcpy (name, namebuf, len); |
252b5132 RH |
2452 | newsect = bfd_make_section (abfd, name); |
2453 | if (newsect == NULL) | |
b34976b6 | 2454 | return FALSE; |
252b5132 RH |
2455 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2456 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2457 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2458 | if (hdr->p_type == PT_LOAD) |
2459 | { | |
2460 | newsect->flags |= SEC_ALLOC; | |
2461 | if (hdr->p_flags & PF_X) | |
2462 | newsect->flags |= SEC_CODE; | |
2463 | } | |
2464 | if (!(hdr->p_flags & PF_W)) | |
2465 | newsect->flags |= SEC_READONLY; | |
2466 | } | |
2467 | ||
b34976b6 | 2468 | return TRUE; |
252b5132 RH |
2469 | } |
2470 | ||
b34976b6 | 2471 | bfd_boolean |
217aa764 | 2472 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2473 | { |
9c5bfbb7 | 2474 | const struct elf_backend_data *bed; |
20cfcaae NC |
2475 | |
2476 | switch (hdr->p_type) | |
2477 | { | |
2478 | case PT_NULL: | |
2479 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2480 | ||
2481 | case PT_LOAD: | |
2482 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2483 | ||
2484 | case PT_DYNAMIC: | |
2485 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2486 | ||
2487 | case PT_INTERP: | |
2488 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2489 | ||
2490 | case PT_NOTE: | |
2491 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2492 | return FALSE; |
217aa764 | 2493 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2494 | return FALSE; |
2495 | return TRUE; | |
20cfcaae NC |
2496 | |
2497 | case PT_SHLIB: | |
2498 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2499 | ||
2500 | case PT_PHDR: | |
2501 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2502 | ||
811072d8 RM |
2503 | case PT_GNU_EH_FRAME: |
2504 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2505 | "eh_frame_hdr"); | |
2506 | ||
9ee5e499 JJ |
2507 | case PT_GNU_STACK: |
2508 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2509 | ||
8c37241b JJ |
2510 | case PT_GNU_RELRO: |
2511 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2512 | ||
20cfcaae | 2513 | default: |
8c1acd09 | 2514 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2515 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2516 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2517 | } |
2518 | } | |
2519 | ||
23bc299b | 2520 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2521 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2522 | relocations; otherwise, we use REL relocations. */ |
2523 | ||
b34976b6 | 2524 | bfd_boolean |
217aa764 AM |
2525 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2526 | Elf_Internal_Shdr *rel_hdr, | |
2527 | asection *asect, | |
2528 | bfd_boolean use_rela_p) | |
23bc299b MM |
2529 | { |
2530 | char *name; | |
9c5bfbb7 | 2531 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2532 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2533 | |
dc810e39 | 2534 | name = bfd_alloc (abfd, amt); |
23bc299b | 2535 | if (name == NULL) |
b34976b6 | 2536 | return FALSE; |
23bc299b MM |
2537 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2538 | rel_hdr->sh_name = | |
2b0f7ef9 | 2539 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2540 | FALSE); |
23bc299b | 2541 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2542 | return FALSE; |
23bc299b MM |
2543 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2544 | rel_hdr->sh_entsize = (use_rela_p | |
2545 | ? bed->s->sizeof_rela | |
2546 | : bed->s->sizeof_rel); | |
45d6a902 | 2547 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2548 | rel_hdr->sh_flags = 0; |
2549 | rel_hdr->sh_addr = 0; | |
2550 | rel_hdr->sh_size = 0; | |
2551 | rel_hdr->sh_offset = 0; | |
2552 | ||
b34976b6 | 2553 | return TRUE; |
23bc299b MM |
2554 | } |
2555 | ||
252b5132 RH |
2556 | /* Set up an ELF internal section header for a section. */ |
2557 | ||
252b5132 | 2558 | static void |
217aa764 | 2559 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2560 | { |
9c5bfbb7 | 2561 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2562 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2563 | Elf_Internal_Shdr *this_hdr; |
2564 | ||
2565 | if (*failedptr) | |
2566 | { | |
2567 | /* We already failed; just get out of the bfd_map_over_sections | |
2568 | loop. */ | |
2569 | return; | |
2570 | } | |
2571 | ||
2572 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2573 | ||
e57b5356 AM |
2574 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2575 | asect->name, FALSE); | |
2576 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2577 | { |
b34976b6 | 2578 | *failedptr = TRUE; |
252b5132 RH |
2579 | return; |
2580 | } | |
2581 | ||
2582 | this_hdr->sh_flags = 0; | |
2583 | ||
2584 | if ((asect->flags & SEC_ALLOC) != 0 | |
2585 | || asect->user_set_vma) | |
2586 | this_hdr->sh_addr = asect->vma; | |
2587 | else | |
2588 | this_hdr->sh_addr = 0; | |
2589 | ||
2590 | this_hdr->sh_offset = 0; | |
eea6121a | 2591 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2592 | this_hdr->sh_link = 0; |
2593 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2594 | /* The sh_entsize and sh_info fields may have been set already by | |
2595 | copy_private_section_data. */ | |
2596 | ||
2597 | this_hdr->bfd_section = asect; | |
2598 | this_hdr->contents = NULL; | |
2599 | ||
3cddba1e L |
2600 | /* If the section type is unspecified, we set it based on |
2601 | asect->flags. */ | |
2602 | if (this_hdr->sh_type == SHT_NULL) | |
2603 | { | |
45c5e9ed L |
2604 | if ((asect->flags & SEC_GROUP) != 0) |
2605 | { | |
2606 | /* We also need to mark SHF_GROUP here for relocatable | |
2607 | link. */ | |
2608 | struct bfd_link_order *l; | |
2609 | asection *elt; | |
2610 | ||
8423293d | 2611 | for (l = asect->map_head.link_order; l != NULL; l = l->next) |
45c5e9ed L |
2612 | if (l->type == bfd_indirect_link_order |
2613 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2614 | do | |
2615 | { | |
2616 | /* The name is not important. Anything will do. */ | |
2617 | elf_group_name (elt->output_section) = "G"; | |
2618 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2619 | ||
2620 | elt = elf_next_in_group (elt); | |
2621 | /* During a relocatable link, the lists are | |
2622 | circular. */ | |
2623 | } | |
2624 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2625 | ||
2626 | this_hdr->sh_type = SHT_GROUP; | |
2627 | } | |
2628 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2629 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2630 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2631 | this_hdr->sh_type = SHT_NOBITS; | |
2632 | else | |
2633 | this_hdr->sh_type = SHT_PROGBITS; | |
2634 | } | |
2635 | ||
2f89ff8d | 2636 | switch (this_hdr->sh_type) |
252b5132 | 2637 | { |
2f89ff8d | 2638 | default: |
2f89ff8d L |
2639 | break; |
2640 | ||
2641 | case SHT_STRTAB: | |
2642 | case SHT_INIT_ARRAY: | |
2643 | case SHT_FINI_ARRAY: | |
2644 | case SHT_PREINIT_ARRAY: | |
2645 | case SHT_NOTE: | |
2646 | case SHT_NOBITS: | |
2647 | case SHT_PROGBITS: | |
2648 | break; | |
2649 | ||
2650 | case SHT_HASH: | |
c7ac6ff8 | 2651 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2652 | break; |
5de3bf90 | 2653 | |
2f89ff8d | 2654 | case SHT_DYNSYM: |
252b5132 | 2655 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2656 | break; |
2657 | ||
2658 | case SHT_DYNAMIC: | |
252b5132 | 2659 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2660 | break; |
2661 | ||
2662 | case SHT_RELA: | |
2663 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2664 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2665 | break; | |
2666 | ||
2667 | case SHT_REL: | |
2668 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2669 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2670 | break; | |
2671 | ||
2672 | case SHT_GNU_versym: | |
252b5132 | 2673 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2674 | break; |
2675 | ||
2676 | case SHT_GNU_verdef: | |
252b5132 RH |
2677 | this_hdr->sh_entsize = 0; |
2678 | /* objcopy or strip will copy over sh_info, but may not set | |
2679 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2680 | zero. */ | |
2681 | if (this_hdr->sh_info == 0) | |
2682 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2683 | else | |
2684 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2685 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2686 | break; |
2687 | ||
2688 | case SHT_GNU_verneed: | |
252b5132 RH |
2689 | this_hdr->sh_entsize = 0; |
2690 | /* objcopy or strip will copy over sh_info, but may not set | |
2691 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2692 | zero. */ | |
2693 | if (this_hdr->sh_info == 0) | |
2694 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2695 | else | |
2696 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2697 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2698 | break; |
2699 | ||
2700 | case SHT_GROUP: | |
dbb410c3 | 2701 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2702 | break; |
dbb410c3 | 2703 | } |
252b5132 RH |
2704 | |
2705 | if ((asect->flags & SEC_ALLOC) != 0) | |
2706 | this_hdr->sh_flags |= SHF_ALLOC; | |
2707 | if ((asect->flags & SEC_READONLY) == 0) | |
2708 | this_hdr->sh_flags |= SHF_WRITE; | |
2709 | if ((asect->flags & SEC_CODE) != 0) | |
2710 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2711 | if ((asect->flags & SEC_MERGE) != 0) |
2712 | { | |
2713 | this_hdr->sh_flags |= SHF_MERGE; | |
2714 | this_hdr->sh_entsize = asect->entsize; | |
2715 | if ((asect->flags & SEC_STRINGS) != 0) | |
2716 | this_hdr->sh_flags |= SHF_STRINGS; | |
2717 | } | |
1126897b | 2718 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2719 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2720 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2721 | { |
2722 | this_hdr->sh_flags |= SHF_TLS; | |
eea6121a | 2723 | if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) |
704afa60 JJ |
2724 | { |
2725 | struct bfd_link_order *o; | |
b34976b6 | 2726 | |
704afa60 | 2727 | this_hdr->sh_size = 0; |
8423293d | 2728 | for (o = asect->map_head.link_order; o != NULL; o = o->next) |
704afa60 JJ |
2729 | if (this_hdr->sh_size < o->offset + o->size) |
2730 | this_hdr->sh_size = o->offset + o->size; | |
2731 | if (this_hdr->sh_size) | |
2732 | this_hdr->sh_type = SHT_NOBITS; | |
2733 | } | |
2734 | } | |
252b5132 RH |
2735 | |
2736 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2737 | if (bed->elf_backend_fake_sections |
2738 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2739 | *failedptr = TRUE; |
252b5132 RH |
2740 | |
2741 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2742 | SHT_REL[A] section. If two relocation sections are required for |
2743 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2744 | create the other. */ |
23bc299b | 2745 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2746 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2747 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2748 | asect, |
68bfbfcc | 2749 | asect->use_rela_p)) |
b34976b6 | 2750 | *failedptr = TRUE; |
252b5132 RH |
2751 | } |
2752 | ||
dbb410c3 AM |
2753 | /* Fill in the contents of a SHT_GROUP section. */ |
2754 | ||
1126897b | 2755 | void |
217aa764 | 2756 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2757 | { |
217aa764 | 2758 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2759 | unsigned long symindx; |
9dce4196 | 2760 | asection *elt, *first; |
dbb410c3 AM |
2761 | unsigned char *loc; |
2762 | struct bfd_link_order *l; | |
b34976b6 | 2763 | bfd_boolean gas; |
dbb410c3 | 2764 | |
7e4111ad L |
2765 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2766 | elfxx-ia64.c. */ | |
2767 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2768 | || *failedptr) |
2769 | return; | |
2770 | ||
1126897b AM |
2771 | symindx = 0; |
2772 | if (elf_group_id (sec) != NULL) | |
2773 | symindx = elf_group_id (sec)->udata.i; | |
2774 | ||
2775 | if (symindx == 0) | |
2776 | { | |
2777 | /* If called from the assembler, swap_out_syms will have set up | |
2778 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2779 | if (elf_section_syms (abfd) != NULL) | |
2780 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2781 | else | |
2782 | symindx = sec->target_index; | |
2783 | } | |
dbb410c3 AM |
2784 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2785 | ||
1126897b | 2786 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2787 | gas = TRUE; |
dbb410c3 AM |
2788 | if (sec->contents == NULL) |
2789 | { | |
b34976b6 | 2790 | gas = FALSE; |
eea6121a | 2791 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2792 | |
2793 | /* Arrange for the section to be written out. */ | |
2794 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2795 | if (sec->contents == NULL) |
2796 | { | |
b34976b6 | 2797 | *failedptr = TRUE; |
dbb410c3 AM |
2798 | return; |
2799 | } | |
2800 | } | |
2801 | ||
eea6121a | 2802 | loc = sec->contents + sec->size; |
dbb410c3 | 2803 | |
9dce4196 AM |
2804 | /* Get the pointer to the first section in the group that gas |
2805 | squirreled away here. objcopy arranges for this to be set to the | |
2806 | start of the input section group. */ | |
2807 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2808 | |
2809 | /* First element is a flag word. Rest of section is elf section | |
2810 | indices for all the sections of the group. Write them backwards | |
2811 | just to keep the group in the same order as given in .section | |
2812 | directives, not that it matters. */ | |
2813 | while (elt != NULL) | |
2814 | { | |
9dce4196 AM |
2815 | asection *s; |
2816 | unsigned int idx; | |
2817 | ||
dbb410c3 | 2818 | loc -= 4; |
9dce4196 AM |
2819 | s = elt; |
2820 | if (!gas) | |
2821 | s = s->output_section; | |
2822 | idx = 0; | |
2823 | if (s != NULL) | |
2824 | idx = elf_section_data (s)->this_idx; | |
2825 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2826 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2827 | if (elt == first) |
2828 | break; | |
dbb410c3 AM |
2829 | } |
2830 | ||
2831 | /* If this is a relocatable link, then the above did nothing because | |
2832 | SEC is the output section. Look through the input sections | |
2833 | instead. */ | |
8423293d | 2834 | for (l = sec->map_head.link_order; l != NULL; l = l->next) |
dbb410c3 | 2835 | if (l->type == bfd_indirect_link_order |
945906ff | 2836 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2837 | do |
2838 | { | |
2839 | loc -= 4; | |
2840 | H_PUT_32 (abfd, | |
2841 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2842 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2843 | /* During a relocatable link, the lists are circular. */ |
2844 | } | |
945906ff | 2845 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2846 | |
3d7f7666 | 2847 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2848 | abort (); |
dbb410c3 | 2849 | |
9dce4196 | 2850 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2851 | } |
2852 | ||
252b5132 RH |
2853 | /* Assign all ELF section numbers. The dummy first section is handled here |
2854 | too. The link/info pointers for the standard section types are filled | |
2855 | in here too, while we're at it. */ | |
2856 | ||
b34976b6 | 2857 | static bfd_boolean |
da9f89d4 | 2858 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2859 | { |
2860 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2861 | asection *sec; | |
2b0f7ef9 | 2862 | unsigned int section_number, secn; |
252b5132 | 2863 | Elf_Internal_Shdr **i_shdrp; |
dc810e39 | 2864 | bfd_size_type amt; |
47cc2cf5 | 2865 | struct bfd_elf_section_data *d; |
252b5132 RH |
2866 | |
2867 | section_number = 1; | |
2868 | ||
2b0f7ef9 JJ |
2869 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2870 | ||
da9f89d4 L |
2871 | /* SHT_GROUP sections are in relocatable files only. */ |
2872 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2873 | { |
da9f89d4 | 2874 | /* Put SHT_GROUP sections first. */ |
04dd1667 | 2875 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
47cc2cf5 | 2876 | { |
5daa8fe7 | 2877 | d = elf_section_data (sec); |
da9f89d4 L |
2878 | |
2879 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2880 | { | |
5daa8fe7 | 2881 | if (sec->flags & SEC_LINKER_CREATED) |
da9f89d4 L |
2882 | { |
2883 | /* Remove the linker created SHT_GROUP sections. */ | |
5daa8fe7 | 2884 | bfd_section_list_remove (abfd, sec); |
da9f89d4 | 2885 | abfd->section_count--; |
da9f89d4 L |
2886 | } |
2887 | else | |
2888 | { | |
2889 | if (section_number == SHN_LORESERVE) | |
2890 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2891 | d->this_idx = section_number++; | |
2892 | } | |
2893 | } | |
47cc2cf5 PB |
2894 | } |
2895 | } | |
2896 | ||
2897 | for (sec = abfd->sections; sec; sec = sec->next) | |
2898 | { | |
2899 | d = elf_section_data (sec); | |
2900 | ||
2901 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2902 | { | |
2903 | if (section_number == SHN_LORESERVE) | |
2904 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2905 | d->this_idx = section_number++; | |
2906 | } | |
2b0f7ef9 | 2907 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2908 | if ((sec->flags & SEC_RELOC) == 0) |
2909 | d->rel_idx = 0; | |
2910 | else | |
2b0f7ef9 | 2911 | { |
9ad5cbcf AM |
2912 | if (section_number == SHN_LORESERVE) |
2913 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2914 | d->rel_idx = section_number++; |
2915 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2916 | } | |
23bc299b MM |
2917 | |
2918 | if (d->rel_hdr2) | |
2b0f7ef9 | 2919 | { |
9ad5cbcf AM |
2920 | if (section_number == SHN_LORESERVE) |
2921 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2922 | d->rel_idx2 = section_number++; |
2923 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2924 | } | |
23bc299b MM |
2925 | else |
2926 | d->rel_idx2 = 0; | |
252b5132 RH |
2927 | } |
2928 | ||
9ad5cbcf AM |
2929 | if (section_number == SHN_LORESERVE) |
2930 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2931 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2932 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2933 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2934 | |
2935 | if (bfd_get_symcount (abfd) > 0) | |
2936 | { | |
9ad5cbcf AM |
2937 | if (section_number == SHN_LORESERVE) |
2938 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2939 | t->symtab_section = section_number++; |
2b0f7ef9 | 2940 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2941 | if (section_number > SHN_LORESERVE - 2) |
2942 | { | |
2943 | if (section_number == SHN_LORESERVE) | |
2944 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2945 | t->symtab_shndx_section = section_number++; | |
2946 | t->symtab_shndx_hdr.sh_name | |
2947 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2948 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2949 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2950 | return FALSE; |
9ad5cbcf AM |
2951 | } |
2952 | if (section_number == SHN_LORESERVE) | |
2953 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2954 | t->strtab_section = section_number++; |
2b0f7ef9 | 2955 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2956 | } |
2957 | ||
2b0f7ef9 JJ |
2958 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2959 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2960 | |
2961 | elf_numsections (abfd) = section_number; | |
252b5132 | 2962 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2963 | if (section_number > SHN_LORESERVE) |
2964 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2965 | |
2966 | /* Set up the list of section header pointers, in agreement with the | |
2967 | indices. */ | |
dc810e39 | 2968 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
217aa764 | 2969 | i_shdrp = bfd_zalloc (abfd, amt); |
252b5132 | 2970 | if (i_shdrp == NULL) |
b34976b6 | 2971 | return FALSE; |
252b5132 | 2972 | |
dc810e39 | 2973 | amt = sizeof (Elf_Internal_Shdr); |
217aa764 | 2974 | i_shdrp[0] = bfd_zalloc (abfd, amt); |
252b5132 RH |
2975 | if (i_shdrp[0] == NULL) |
2976 | { | |
2977 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2978 | return FALSE; |
252b5132 | 2979 | } |
252b5132 RH |
2980 | |
2981 | elf_elfsections (abfd) = i_shdrp; | |
2982 | ||
2983 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2984 | if (bfd_get_symcount (abfd) > 0) | |
2985 | { | |
2986 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2987 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2988 | { | |
2989 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2990 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2991 | } | |
252b5132 RH |
2992 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2993 | t->symtab_hdr.sh_link = t->strtab_section; | |
2994 | } | |
38ce5b11 | 2995 | |
252b5132 RH |
2996 | for (sec = abfd->sections; sec; sec = sec->next) |
2997 | { | |
2998 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2999 | asection *s; | |
3000 | const char *name; | |
3001 | ||
3002 | i_shdrp[d->this_idx] = &d->this_hdr; | |
3003 | if (d->rel_idx != 0) | |
3004 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
3005 | if (d->rel_idx2 != 0) |
3006 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
3007 | |
3008 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
3009 | ||
3010 | /* sh_link of a reloc section is the section index of the symbol | |
3011 | table. sh_info is the section index of the section to which | |
3012 | the relocation entries apply. */ | |
3013 | if (d->rel_idx != 0) | |
3014 | { | |
3015 | d->rel_hdr.sh_link = t->symtab_section; | |
3016 | d->rel_hdr.sh_info = d->this_idx; | |
3017 | } | |
23bc299b MM |
3018 | if (d->rel_idx2 != 0) |
3019 | { | |
3020 | d->rel_hdr2->sh_link = t->symtab_section; | |
3021 | d->rel_hdr2->sh_info = d->this_idx; | |
3022 | } | |
252b5132 | 3023 | |
38ce5b11 L |
3024 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
3025 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
3026 | { | |
3027 | s = elf_linked_to_section (sec); | |
3028 | if (s) | |
3029 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3030 | else | |
3031 | { | |
3032 | struct bfd_link_order *p; | |
3033 | ||
3034 | /* Find out what the corresponding section in output | |
3035 | is. */ | |
8423293d | 3036 | for (p = sec->map_head.link_order; p != NULL; p = p->next) |
38ce5b11 L |
3037 | { |
3038 | s = p->u.indirect.section; | |
3039 | if (p->type == bfd_indirect_link_order | |
3040 | && (bfd_get_flavour (s->owner) | |
3041 | == bfd_target_elf_flavour)) | |
3042 | { | |
3043 | Elf_Internal_Shdr ** const elf_shdrp | |
3044 | = elf_elfsections (s->owner); | |
3045 | int elfsec | |
3046 | = _bfd_elf_section_from_bfd_section (s->owner, s); | |
3047 | elfsec = elf_shdrp[elfsec]->sh_link; | |
185d09ad L |
3048 | /* PR 290: |
3049 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
ff01938b | 3050 | SHF_LINK_ORDER. But it doesn't set the sh_link or |
185d09ad L |
3051 | sh_info fields. Hence we could get the situation |
3052 | where elfsec is 0. */ | |
3053 | if (elfsec == 0) | |
3054 | { | |
3055 | const struct elf_backend_data *bed | |
3056 | = get_elf_backend_data (abfd); | |
3057 | if (bed->link_order_error_handler) | |
d003868e | 3058 | bed->link_order_error_handler |
28b13744 | 3059 | (_("%B: warning: sh_link not set for section `%A'"), |
d003868e | 3060 | abfd, s); |
185d09ad L |
3061 | } |
3062 | else | |
3063 | { | |
01b3c8ab L |
3064 | s = elf_shdrp[elfsec]->bfd_section; |
3065 | if (elf_discarded_section (s)) | |
3066 | { | |
3067 | asection *kept; | |
3068 | (*_bfd_error_handler) | |
3069 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
3070 | abfd, d->this_hdr.bfd_section, | |
3071 | s, s->owner); | |
3072 | /* Point to the kept section if it has | |
3073 | the same size as the discarded | |
3074 | one. */ | |
3075 | kept = _bfd_elf_check_kept_section (s); | |
3076 | if (kept == NULL) | |
3077 | { | |
3078 | bfd_set_error (bfd_error_bad_value); | |
3079 | return FALSE; | |
3080 | } | |
2796fd96 | 3081 | s = kept; |
01b3c8ab L |
3082 | } |
3083 | s = s->output_section; | |
185d09ad L |
3084 | BFD_ASSERT (s != NULL); |
3085 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3086 | } | |
38ce5b11 L |
3087 | break; |
3088 | } | |
3089 | } | |
3090 | } | |
3091 | } | |
3092 | ||
252b5132 RH |
3093 | switch (d->this_hdr.sh_type) |
3094 | { | |
3095 | case SHT_REL: | |
3096 | case SHT_RELA: | |
3097 | /* A reloc section which we are treating as a normal BFD | |
3098 | section. sh_link is the section index of the symbol | |
3099 | table. sh_info is the section index of the section to | |
3100 | which the relocation entries apply. We assume that an | |
3101 | allocated reloc section uses the dynamic symbol table. | |
3102 | FIXME: How can we be sure? */ | |
3103 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3104 | if (s != NULL) | |
3105 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3106 | ||
3107 | /* We look up the section the relocs apply to by name. */ | |
3108 | name = sec->name; | |
3109 | if (d->this_hdr.sh_type == SHT_REL) | |
3110 | name += 4; | |
3111 | else | |
3112 | name += 5; | |
3113 | s = bfd_get_section_by_name (abfd, name); | |
3114 | if (s != NULL) | |
3115 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3116 | break; | |
3117 | ||
3118 | case SHT_STRTAB: | |
3119 | /* We assume that a section named .stab*str is a stabs | |
3120 | string section. We look for a section with the same name | |
3121 | but without the trailing ``str'', and set its sh_link | |
3122 | field to point to this section. */ | |
3123 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3124 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3125 | { | |
3126 | size_t len; | |
3127 | char *alc; | |
3128 | ||
3129 | len = strlen (sec->name); | |
217aa764 | 3130 | alc = bfd_malloc (len - 2); |
252b5132 | 3131 | if (alc == NULL) |
b34976b6 | 3132 | return FALSE; |
d4c88bbb | 3133 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3134 | alc[len - 3] = '\0'; |
3135 | s = bfd_get_section_by_name (abfd, alc); | |
3136 | free (alc); | |
3137 | if (s != NULL) | |
3138 | { | |
3139 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3140 | ||
3141 | /* This is a .stab section. */ | |
0594c12d AM |
3142 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3143 | elf_section_data (s)->this_hdr.sh_entsize | |
3144 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3145 | } |
3146 | } | |
3147 | break; | |
3148 | ||
3149 | case SHT_DYNAMIC: | |
3150 | case SHT_DYNSYM: | |
3151 | case SHT_GNU_verneed: | |
3152 | case SHT_GNU_verdef: | |
3153 | /* sh_link is the section header index of the string table | |
3154 | used for the dynamic entries, or the symbol table, or the | |
3155 | version strings. */ | |
3156 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3157 | if (s != NULL) | |
3158 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3159 | break; | |
3160 | ||
7f1204bb JJ |
3161 | case SHT_GNU_LIBLIST: |
3162 | /* sh_link is the section header index of the prelink library | |
3163 | list | |
3164 | used for the dynamic entries, or the symbol table, or the | |
3165 | version strings. */ | |
3166 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3167 | ? ".dynstr" : ".gnu.libstr"); | |
3168 | if (s != NULL) | |
3169 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3170 | break; | |
3171 | ||
252b5132 RH |
3172 | case SHT_HASH: |
3173 | case SHT_GNU_versym: | |
3174 | /* sh_link is the section header index of the symbol table | |
3175 | this hash table or version table is for. */ | |
3176 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3177 | if (s != NULL) | |
3178 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3179 | break; | |
dbb410c3 AM |
3180 | |
3181 | case SHT_GROUP: | |
3182 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3183 | } |
3184 | } | |
3185 | ||
2b0f7ef9 | 3186 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3187 | if (i_shdrp[secn] == NULL) |
3188 | i_shdrp[secn] = i_shdrp[0]; | |
3189 | else | |
3190 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3191 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3192 | return TRUE; |
252b5132 RH |
3193 | } |
3194 | ||
3195 | /* Map symbol from it's internal number to the external number, moving | |
3196 | all local symbols to be at the head of the list. */ | |
3197 | ||
268b6b39 | 3198 | static int |
217aa764 | 3199 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3200 | { |
3201 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3202 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3203 | if (bed->elf_backend_sym_is_global) |
3204 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3205 | |
3206 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3207 | || bfd_is_und_section (bfd_get_section (sym)) | |
3208 | || bfd_is_com_section (bfd_get_section (sym))); | |
3209 | } | |
3210 | ||
b34976b6 | 3211 | static bfd_boolean |
217aa764 | 3212 | elf_map_symbols (bfd *abfd) |
252b5132 | 3213 | { |
dc810e39 | 3214 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3215 | asymbol **syms = bfd_get_outsymbols (abfd); |
3216 | asymbol **sect_syms; | |
dc810e39 AM |
3217 | unsigned int num_locals = 0; |
3218 | unsigned int num_globals = 0; | |
3219 | unsigned int num_locals2 = 0; | |
3220 | unsigned int num_globals2 = 0; | |
252b5132 | 3221 | int max_index = 0; |
dc810e39 | 3222 | unsigned int idx; |
252b5132 RH |
3223 | asection *asect; |
3224 | asymbol **new_syms; | |
dc810e39 | 3225 | bfd_size_type amt; |
252b5132 RH |
3226 | |
3227 | #ifdef DEBUG | |
3228 | fprintf (stderr, "elf_map_symbols\n"); | |
3229 | fflush (stderr); | |
3230 | #endif | |
3231 | ||
252b5132 RH |
3232 | for (asect = abfd->sections; asect; asect = asect->next) |
3233 | { | |
3234 | if (max_index < asect->index) | |
3235 | max_index = asect->index; | |
3236 | } | |
3237 | ||
3238 | max_index++; | |
dc810e39 | 3239 | amt = max_index * sizeof (asymbol *); |
217aa764 | 3240 | sect_syms = bfd_zalloc (abfd, amt); |
252b5132 | 3241 | if (sect_syms == NULL) |
b34976b6 | 3242 | return FALSE; |
252b5132 | 3243 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3244 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3245 | |
079e9a2f AM |
3246 | /* Init sect_syms entries for any section symbols we have already |
3247 | decided to output. */ | |
252b5132 RH |
3248 | for (idx = 0; idx < symcount; idx++) |
3249 | { | |
dc810e39 | 3250 | asymbol *sym = syms[idx]; |
c044fabd | 3251 | |
252b5132 RH |
3252 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3253 | && sym->value == 0) | |
3254 | { | |
3255 | asection *sec; | |
3256 | ||
3257 | sec = sym->section; | |
3258 | ||
3259 | if (sec->owner != NULL) | |
3260 | { | |
3261 | if (sec->owner != abfd) | |
3262 | { | |
3263 | if (sec->output_offset != 0) | |
3264 | continue; | |
c044fabd | 3265 | |
252b5132 RH |
3266 | sec = sec->output_section; |
3267 | ||
079e9a2f AM |
3268 | /* Empty sections in the input files may have had a |
3269 | section symbol created for them. (See the comment | |
3270 | near the end of _bfd_generic_link_output_symbols in | |
3271 | linker.c). If the linker script discards such | |
3272 | sections then we will reach this point. Since we know | |
3273 | that we cannot avoid this case, we detect it and skip | |
3274 | the abort and the assignment to the sect_syms array. | |
3275 | To reproduce this particular case try running the | |
3276 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3277 | port that uses the generic linker. */ | |
252b5132 RH |
3278 | if (sec->owner == NULL) |
3279 | continue; | |
3280 | ||
3281 | BFD_ASSERT (sec->owner == abfd); | |
3282 | } | |
3283 | sect_syms[sec->index] = syms[idx]; | |
3284 | } | |
3285 | } | |
3286 | } | |
3287 | ||
252b5132 RH |
3288 | /* Classify all of the symbols. */ |
3289 | for (idx = 0; idx < symcount; idx++) | |
3290 | { | |
3291 | if (!sym_is_global (abfd, syms[idx])) | |
3292 | num_locals++; | |
3293 | else | |
3294 | num_globals++; | |
3295 | } | |
079e9a2f AM |
3296 | |
3297 | /* We will be adding a section symbol for each BFD section. Most normal | |
3298 | sections will already have a section symbol in outsymbols, but | |
3299 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3300 | at least in that case. */ | |
252b5132 RH |
3301 | for (asect = abfd->sections; asect; asect = asect->next) |
3302 | { | |
079e9a2f | 3303 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3304 | { |
079e9a2f | 3305 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3306 | num_locals++; |
3307 | else | |
3308 | num_globals++; | |
252b5132 RH |
3309 | } |
3310 | } | |
3311 | ||
3312 | /* Now sort the symbols so the local symbols are first. */ | |
dc810e39 | 3313 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
217aa764 | 3314 | new_syms = bfd_alloc (abfd, amt); |
dc810e39 | 3315 | |
252b5132 | 3316 | if (new_syms == NULL) |
b34976b6 | 3317 | return FALSE; |
252b5132 RH |
3318 | |
3319 | for (idx = 0; idx < symcount; idx++) | |
3320 | { | |
3321 | asymbol *sym = syms[idx]; | |
dc810e39 | 3322 | unsigned int i; |
252b5132 RH |
3323 | |
3324 | if (!sym_is_global (abfd, sym)) | |
3325 | i = num_locals2++; | |
3326 | else | |
3327 | i = num_locals + num_globals2++; | |
3328 | new_syms[i] = sym; | |
3329 | sym->udata.i = i + 1; | |
3330 | } | |
3331 | for (asect = abfd->sections; asect; asect = asect->next) | |
3332 | { | |
079e9a2f | 3333 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3334 | { |
079e9a2f | 3335 | asymbol *sym = asect->symbol; |
dc810e39 | 3336 | unsigned int i; |
252b5132 | 3337 | |
079e9a2f | 3338 | sect_syms[asect->index] = sym; |
252b5132 RH |
3339 | if (!sym_is_global (abfd, sym)) |
3340 | i = num_locals2++; | |
3341 | else | |
3342 | i = num_locals + num_globals2++; | |
3343 | new_syms[i] = sym; | |
3344 | sym->udata.i = i + 1; | |
3345 | } | |
3346 | } | |
3347 | ||
3348 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3349 | ||
3350 | elf_num_locals (abfd) = num_locals; | |
3351 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3352 | return TRUE; |
252b5132 RH |
3353 | } |
3354 | ||
3355 | /* Align to the maximum file alignment that could be required for any | |
3356 | ELF data structure. */ | |
3357 | ||
268b6b39 | 3358 | static inline file_ptr |
217aa764 | 3359 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3360 | { |
3361 | return (off + align - 1) & ~(align - 1); | |
3362 | } | |
3363 | ||
3364 | /* Assign a file position to a section, optionally aligning to the | |
3365 | required section alignment. */ | |
3366 | ||
217aa764 AM |
3367 | file_ptr |
3368 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3369 | file_ptr offset, | |
3370 | bfd_boolean align) | |
252b5132 RH |
3371 | { |
3372 | if (align) | |
3373 | { | |
3374 | unsigned int al; | |
3375 | ||
3376 | al = i_shdrp->sh_addralign; | |
3377 | if (al > 1) | |
3378 | offset = BFD_ALIGN (offset, al); | |
3379 | } | |
3380 | i_shdrp->sh_offset = offset; | |
3381 | if (i_shdrp->bfd_section != NULL) | |
3382 | i_shdrp->bfd_section->filepos = offset; | |
3383 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3384 | offset += i_shdrp->sh_size; | |
3385 | return offset; | |
3386 | } | |
3387 | ||
3388 | /* Compute the file positions we are going to put the sections at, and | |
3389 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3390 | is not NULL, this is being called by the ELF backend linker. */ | |
3391 | ||
b34976b6 | 3392 | bfd_boolean |
217aa764 AM |
3393 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3394 | struct bfd_link_info *link_info) | |
252b5132 | 3395 | { |
9c5bfbb7 | 3396 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3397 | bfd_boolean failed; |
4b6c0f2f | 3398 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3399 | Elf_Internal_Shdr *shstrtab_hdr; |
3400 | ||
3401 | if (abfd->output_has_begun) | |
b34976b6 | 3402 | return TRUE; |
252b5132 RH |
3403 | |
3404 | /* Do any elf backend specific processing first. */ | |
3405 | if (bed->elf_backend_begin_write_processing) | |
3406 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3407 | ||
3408 | if (! prep_headers (abfd)) | |
b34976b6 | 3409 | return FALSE; |
252b5132 | 3410 | |
e6c51ed4 NC |
3411 | /* Post process the headers if necessary. */ |
3412 | if (bed->elf_backend_post_process_headers) | |
3413 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3414 | ||
b34976b6 | 3415 | failed = FALSE; |
252b5132 RH |
3416 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3417 | if (failed) | |
b34976b6 | 3418 | return FALSE; |
252b5132 | 3419 | |
da9f89d4 | 3420 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3421 | return FALSE; |
252b5132 RH |
3422 | |
3423 | /* The backend linker builds symbol table information itself. */ | |
3424 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3425 | { | |
3426 | /* Non-zero if doing a relocatable link. */ | |
3427 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3428 | ||
3429 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3430 | return FALSE; |
252b5132 RH |
3431 | } |
3432 | ||
1126897b | 3433 | if (link_info == NULL) |
dbb410c3 | 3434 | { |
1126897b | 3435 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3436 | if (failed) |
b34976b6 | 3437 | return FALSE; |
dbb410c3 AM |
3438 | } |
3439 | ||
252b5132 RH |
3440 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3441 | /* sh_name was set in prep_headers. */ | |
3442 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3443 | shstrtab_hdr->sh_flags = 0; | |
3444 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3445 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3446 | shstrtab_hdr->sh_entsize = 0; |
3447 | shstrtab_hdr->sh_link = 0; | |
3448 | shstrtab_hdr->sh_info = 0; | |
3449 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3450 | shstrtab_hdr->sh_addralign = 1; | |
3451 | ||
c84fca4d | 3452 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3453 | return FALSE; |
252b5132 RH |
3454 | |
3455 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3456 | { | |
3457 | file_ptr off; | |
3458 | Elf_Internal_Shdr *hdr; | |
3459 | ||
3460 | off = elf_tdata (abfd)->next_file_pos; | |
3461 | ||
3462 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3463 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3464 | |
9ad5cbcf AM |
3465 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3466 | if (hdr->sh_size != 0) | |
b34976b6 | 3467 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3468 | |
252b5132 | 3469 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3470 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3471 | |
3472 | elf_tdata (abfd)->next_file_pos = off; | |
3473 | ||
3474 | /* Now that we know where the .strtab section goes, write it | |
3475 | out. */ | |
3476 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3477 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3478 | return FALSE; |
252b5132 RH |
3479 | _bfd_stringtab_free (strtab); |
3480 | } | |
3481 | ||
b34976b6 | 3482 | abfd->output_has_begun = TRUE; |
252b5132 | 3483 | |
b34976b6 | 3484 | return TRUE; |
252b5132 RH |
3485 | } |
3486 | ||
3487 | /* Create a mapping from a set of sections to a program segment. */ | |
3488 | ||
217aa764 AM |
3489 | static struct elf_segment_map * |
3490 | make_mapping (bfd *abfd, | |
3491 | asection **sections, | |
3492 | unsigned int from, | |
3493 | unsigned int to, | |
3494 | bfd_boolean phdr) | |
252b5132 RH |
3495 | { |
3496 | struct elf_segment_map *m; | |
3497 | unsigned int i; | |
3498 | asection **hdrpp; | |
dc810e39 | 3499 | bfd_size_type amt; |
252b5132 | 3500 | |
dc810e39 AM |
3501 | amt = sizeof (struct elf_segment_map); |
3502 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3503 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3504 | if (m == NULL) |
3505 | return NULL; | |
3506 | m->next = NULL; | |
3507 | m->p_type = PT_LOAD; | |
3508 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3509 | m->sections[i - from] = *hdrpp; | |
3510 | m->count = to - from; | |
3511 | ||
3512 | if (from == 0 && phdr) | |
3513 | { | |
3514 | /* Include the headers in the first PT_LOAD segment. */ | |
3515 | m->includes_filehdr = 1; | |
3516 | m->includes_phdrs = 1; | |
3517 | } | |
3518 | ||
3519 | return m; | |
3520 | } | |
3521 | ||
229fcec5 MM |
3522 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3523 | on failure. */ | |
3524 | ||
3525 | struct elf_segment_map * | |
3526 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3527 | { | |
3528 | struct elf_segment_map *m; | |
3529 | ||
3530 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3531 | if (m == NULL) | |
3532 | return NULL; | |
3533 | m->next = NULL; | |
3534 | m->p_type = PT_DYNAMIC; | |
3535 | m->count = 1; | |
3536 | m->sections[0] = dynsec; | |
3537 | ||
3538 | return m; | |
3539 | } | |
3540 | ||
252b5132 RH |
3541 | /* Set up a mapping from BFD sections to program segments. */ |
3542 | ||
b34976b6 | 3543 | static bfd_boolean |
217aa764 | 3544 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3545 | { |
3546 | asection **sections = NULL; | |
3547 | asection *s; | |
3548 | unsigned int i; | |
3549 | unsigned int count; | |
3550 | struct elf_segment_map *mfirst; | |
3551 | struct elf_segment_map **pm; | |
3552 | struct elf_segment_map *m; | |
3553 | asection *last_hdr; | |
baaff79e | 3554 | bfd_vma last_size; |
252b5132 RH |
3555 | unsigned int phdr_index; |
3556 | bfd_vma maxpagesize; | |
3557 | asection **hdrpp; | |
b34976b6 AM |
3558 | bfd_boolean phdr_in_segment = TRUE; |
3559 | bfd_boolean writable; | |
13ae64f3 JJ |
3560 | int tls_count = 0; |
3561 | asection *first_tls = NULL; | |
65765700 | 3562 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3563 | bfd_size_type amt; |
252b5132 RH |
3564 | |
3565 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3566 | return TRUE; |
252b5132 RH |
3567 | |
3568 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3569 | return TRUE; |
252b5132 RH |
3570 | |
3571 | /* Select the allocated sections, and sort them. */ | |
3572 | ||
dc810e39 | 3573 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
217aa764 | 3574 | sections = bfd_malloc (amt); |
252b5132 RH |
3575 | if (sections == NULL) |
3576 | goto error_return; | |
3577 | ||
3578 | i = 0; | |
3579 | for (s = abfd->sections; s != NULL; s = s->next) | |
3580 | { | |
3581 | if ((s->flags & SEC_ALLOC) != 0) | |
3582 | { | |
3583 | sections[i] = s; | |
3584 | ++i; | |
3585 | } | |
3586 | } | |
3587 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3588 | count = i; | |
3589 | ||
3590 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3591 | ||
3592 | /* Build the mapping. */ | |
3593 | ||
3594 | mfirst = NULL; | |
3595 | pm = &mfirst; | |
3596 | ||
3597 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3598 | the program headers and a PT_INTERP segment for the .interp | |
3599 | section. */ | |
3600 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3601 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3602 | { | |
dc810e39 | 3603 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3604 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3605 | if (m == NULL) |
3606 | goto error_return; | |
3607 | m->next = NULL; | |
3608 | m->p_type = PT_PHDR; | |
3609 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3610 | m->p_flags = PF_R | PF_X; | |
3611 | m->p_flags_valid = 1; | |
3612 | m->includes_phdrs = 1; | |
3613 | ||
3614 | *pm = m; | |
3615 | pm = &m->next; | |
3616 | ||
dc810e39 | 3617 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3618 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3619 | if (m == NULL) |
3620 | goto error_return; | |
3621 | m->next = NULL; | |
3622 | m->p_type = PT_INTERP; | |
3623 | m->count = 1; | |
3624 | m->sections[0] = s; | |
3625 | ||
3626 | *pm = m; | |
3627 | pm = &m->next; | |
3628 | } | |
3629 | ||
3630 | /* Look through the sections. We put sections in the same program | |
3631 | segment when the start of the second section can be placed within | |
3632 | a few bytes of the end of the first section. */ | |
3633 | last_hdr = NULL; | |
baaff79e | 3634 | last_size = 0; |
252b5132 RH |
3635 | phdr_index = 0; |
3636 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3637 | writable = FALSE; |
252b5132 RH |
3638 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3639 | if (dynsec != NULL | |
3640 | && (dynsec->flags & SEC_LOAD) == 0) | |
3641 | dynsec = NULL; | |
3642 | ||
3643 | /* Deal with -Ttext or something similar such that the first section | |
3644 | is not adjacent to the program headers. This is an | |
3645 | approximation, since at this point we don't know exactly how many | |
3646 | program headers we will need. */ | |
3647 | if (count > 0) | |
3648 | { | |
3649 | bfd_size_type phdr_size; | |
3650 | ||
3651 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3652 | if (phdr_size == 0) | |
3653 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3654 | if ((abfd->flags & D_PAGED) == 0 | |
3655 | || sections[0]->lma < phdr_size | |
3656 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3657 | phdr_in_segment = FALSE; |
252b5132 RH |
3658 | } |
3659 | ||
3660 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3661 | { | |
3662 | asection *hdr; | |
b34976b6 | 3663 | bfd_boolean new_segment; |
252b5132 RH |
3664 | |
3665 | hdr = *hdrpp; | |
3666 | ||
3667 | /* See if this section and the last one will fit in the same | |
3668 | segment. */ | |
3669 | ||
3670 | if (last_hdr == NULL) | |
3671 | { | |
3672 | /* If we don't have a segment yet, then we don't need a new | |
3673 | one (we build the last one after this loop). */ | |
b34976b6 | 3674 | new_segment = FALSE; |
252b5132 RH |
3675 | } |
3676 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3677 | { | |
3678 | /* If this section has a different relation between the | |
3679 | virtual address and the load address, then we need a new | |
3680 | segment. */ | |
b34976b6 | 3681 | new_segment = TRUE; |
252b5132 | 3682 | } |
baaff79e | 3683 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3684 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3685 | { | |
3686 | /* If putting this section in this segment would force us to | |
3687 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3688 | new_segment = TRUE; |
252b5132 | 3689 | } |
baaff79e JJ |
3690 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3691 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3692 | { |
3693 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3694 | nonloadable section in the same segment. |
3695 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3696 | new_segment = TRUE; |
252b5132 RH |
3697 | } |
3698 | else if ((abfd->flags & D_PAGED) == 0) | |
3699 | { | |
3700 | /* If the file is not demand paged, which means that we | |
3701 | don't require the sections to be correctly aligned in the | |
3702 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3703 | new_segment = FALSE; |
252b5132 RH |
3704 | } |
3705 | else if (! writable | |
3706 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3707 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3708 | & ~(maxpagesize - 1)) |
3709 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3710 | { |
3711 | /* We don't want to put a writable section in a read only | |
3712 | segment, unless they are on the same page in memory | |
3713 | anyhow. We already know that the last section does not | |
3714 | bring us past the current section on the page, so the | |
3715 | only case in which the new section is not on the same | |
3716 | page as the previous section is when the previous section | |
3717 | ends precisely on a page boundary. */ | |
b34976b6 | 3718 | new_segment = TRUE; |
252b5132 RH |
3719 | } |
3720 | else | |
3721 | { | |
3722 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3723 | new_segment = FALSE; |
252b5132 RH |
3724 | } |
3725 | ||
3726 | if (! new_segment) | |
3727 | { | |
3728 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3729 | writable = TRUE; |
baaff79e JJ |
3730 | last_hdr = hdr; |
3731 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3732 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3733 | last_size = hdr->size; |
baaff79e JJ |
3734 | else |
3735 | last_size = 0; | |
252b5132 RH |
3736 | continue; |
3737 | } | |
3738 | ||
3739 | /* We need a new program segment. We must create a new program | |
3740 | header holding all the sections from phdr_index until hdr. */ | |
3741 | ||
3742 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3743 | if (m == NULL) | |
3744 | goto error_return; | |
3745 | ||
3746 | *pm = m; | |
3747 | pm = &m->next; | |
3748 | ||
3749 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3750 | writable = TRUE; |
252b5132 | 3751 | else |
b34976b6 | 3752 | writable = FALSE; |
252b5132 RH |
3753 | |
3754 | last_hdr = hdr; | |
baaff79e JJ |
3755 | /* .tbss sections effectively have zero size. */ |
3756 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3757 | last_size = hdr->size; |
baaff79e JJ |
3758 | else |
3759 | last_size = 0; | |
252b5132 | 3760 | phdr_index = i; |
b34976b6 | 3761 | phdr_in_segment = FALSE; |
252b5132 RH |
3762 | } |
3763 | ||
3764 | /* Create a final PT_LOAD program segment. */ | |
3765 | if (last_hdr != NULL) | |
3766 | { | |
3767 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3768 | if (m == NULL) | |
3769 | goto error_return; | |
3770 | ||
3771 | *pm = m; | |
3772 | pm = &m->next; | |
3773 | } | |
3774 | ||
3775 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3776 | if (dynsec != NULL) | |
3777 | { | |
229fcec5 | 3778 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3779 | if (m == NULL) |
3780 | goto error_return; | |
252b5132 RH |
3781 | *pm = m; |
3782 | pm = &m->next; | |
3783 | } | |
3784 | ||
3785 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3786 | use bfd_get_section_by_name, because if we link together | |
3787 | nonloadable .note sections and loadable .note sections, we will | |
3788 | generate two .note sections in the output file. FIXME: Using | |
3789 | names for section types is bogus anyhow. */ | |
3790 | for (s = abfd->sections; s != NULL; s = s->next) | |
3791 | { | |
3792 | if ((s->flags & SEC_LOAD) != 0 | |
3793 | && strncmp (s->name, ".note", 5) == 0) | |
3794 | { | |
dc810e39 | 3795 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3796 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3797 | if (m == NULL) |
3798 | goto error_return; | |
3799 | m->next = NULL; | |
3800 | m->p_type = PT_NOTE; | |
3801 | m->count = 1; | |
3802 | m->sections[0] = s; | |
3803 | ||
3804 | *pm = m; | |
3805 | pm = &m->next; | |
3806 | } | |
13ae64f3 JJ |
3807 | if (s->flags & SEC_THREAD_LOCAL) |
3808 | { | |
3809 | if (! tls_count) | |
3810 | first_tls = s; | |
3811 | tls_count++; | |
3812 | } | |
3813 | } | |
3814 | ||
3815 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3816 | if (tls_count > 0) | |
3817 | { | |
3818 | int i; | |
3819 | ||
3820 | amt = sizeof (struct elf_segment_map); | |
3821 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3822 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3823 | if (m == NULL) |
3824 | goto error_return; | |
3825 | m->next = NULL; | |
3826 | m->p_type = PT_TLS; | |
3827 | m->count = tls_count; | |
3828 | /* Mandated PF_R. */ | |
3829 | m->p_flags = PF_R; | |
3830 | m->p_flags_valid = 1; | |
3831 | for (i = 0; i < tls_count; ++i) | |
3832 | { | |
3833 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3834 | m->sections[i] = first_tls; | |
3835 | first_tls = first_tls->next; | |
3836 | } | |
3837 | ||
3838 | *pm = m; | |
3839 | pm = &m->next; | |
252b5132 RH |
3840 | } |
3841 | ||
65765700 JJ |
3842 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3843 | segment. */ | |
126495ed AM |
3844 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3845 | if (eh_frame_hdr != NULL | |
3846 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3847 | { |
3848 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3849 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3850 | if (m == NULL) |
3851 | goto error_return; | |
3852 | m->next = NULL; | |
3853 | m->p_type = PT_GNU_EH_FRAME; | |
3854 | m->count = 1; | |
126495ed | 3855 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3856 | |
3857 | *pm = m; | |
3858 | pm = &m->next; | |
3859 | } | |
3860 | ||
9ee5e499 JJ |
3861 | if (elf_tdata (abfd)->stack_flags) |
3862 | { | |
3863 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3864 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3865 | if (m == NULL) |
3866 | goto error_return; | |
3867 | m->next = NULL; | |
3868 | m->p_type = PT_GNU_STACK; | |
3869 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3870 | m->p_flags_valid = 1; | |
3871 | ||
3872 | *pm = m; | |
3873 | pm = &m->next; | |
3874 | } | |
3875 | ||
8c37241b JJ |
3876 | if (elf_tdata (abfd)->relro) |
3877 | { | |
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; | |
3883 | m->p_type = PT_GNU_RELRO; | |
3884 | m->p_flags = PF_R; | |
3885 | m->p_flags_valid = 1; | |
3886 | ||
3887 | *pm = m; | |
3888 | pm = &m->next; | |
3889 | } | |
3890 | ||
252b5132 RH |
3891 | free (sections); |
3892 | sections = NULL; | |
3893 | ||
3894 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3895 | return TRUE; |
252b5132 RH |
3896 | |
3897 | error_return: | |
3898 | if (sections != NULL) | |
3899 | free (sections); | |
b34976b6 | 3900 | return FALSE; |
252b5132 RH |
3901 | } |
3902 | ||
3903 | /* Sort sections by address. */ | |
3904 | ||
3905 | static int | |
217aa764 | 3906 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3907 | { |
3908 | const asection *sec1 = *(const asection **) arg1; | |
3909 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3910 | bfd_size_type size1, size2; |
252b5132 RH |
3911 | |
3912 | /* Sort by LMA first, since this is the address used to | |
3913 | place the section into a segment. */ | |
3914 | if (sec1->lma < sec2->lma) | |
3915 | return -1; | |
3916 | else if (sec1->lma > sec2->lma) | |
3917 | return 1; | |
3918 | ||
3919 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3920 | the same, and this will do nothing. */ | |
3921 | if (sec1->vma < sec2->vma) | |
3922 | return -1; | |
3923 | else if (sec1->vma > sec2->vma) | |
3924 | return 1; | |
3925 | ||
3926 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3927 | ||
07c6e936 | 3928 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3929 | |
3930 | if (TOEND (sec1)) | |
3931 | { | |
3932 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3933 | { |
3934 | /* If the indicies are the same, do not return 0 | |
3935 | here, but continue to try the next comparison. */ | |
3936 | if (sec1->target_index - sec2->target_index != 0) | |
3937 | return sec1->target_index - sec2->target_index; | |
3938 | } | |
252b5132 RH |
3939 | else |
3940 | return 1; | |
3941 | } | |
00a7cdc5 | 3942 | else if (TOEND (sec2)) |
252b5132 RH |
3943 | return -1; |
3944 | ||
3945 | #undef TOEND | |
3946 | ||
00a7cdc5 NC |
3947 | /* Sort by size, to put zero sized sections |
3948 | before others at the same address. */ | |
252b5132 | 3949 | |
eea6121a AM |
3950 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3951 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3952 | |
3953 | if (size1 < size2) | |
252b5132 | 3954 | return -1; |
eecdbe52 | 3955 | if (size1 > size2) |
252b5132 RH |
3956 | return 1; |
3957 | ||
3958 | return sec1->target_index - sec2->target_index; | |
3959 | } | |
3960 | ||
340b6d91 AC |
3961 | /* Ian Lance Taylor writes: |
3962 | ||
3963 | We shouldn't be using % with a negative signed number. That's just | |
3964 | not good. We have to make sure either that the number is not | |
3965 | negative, or that the number has an unsigned type. When the types | |
3966 | are all the same size they wind up as unsigned. When file_ptr is a | |
3967 | larger signed type, the arithmetic winds up as signed long long, | |
3968 | which is wrong. | |
3969 | ||
3970 | What we're trying to say here is something like ``increase OFF by | |
3971 | the least amount that will cause it to be equal to the VMA modulo | |
3972 | the page size.'' */ | |
3973 | /* In other words, something like: | |
3974 | ||
3975 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
3976 | off_offset = off % bed->maxpagesize; | |
3977 | if (vma_offset < off_offset) | |
3978 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
3979 | else | |
3980 | adjustment = vma_offset - off_offset; | |
3981 | ||
3982 | which can can be collapsed into the expression below. */ | |
3983 | ||
3984 | static file_ptr | |
3985 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
3986 | { | |
3987 | return ((vma - off) % maxpagesize); | |
3988 | } | |
3989 | ||
252b5132 RH |
3990 | /* Assign file positions to the sections based on the mapping from |
3991 | sections to segments. This function also sets up some fields in | |
3992 | the file header, and writes out the program headers. */ | |
3993 | ||
b34976b6 | 3994 | static bfd_boolean |
c84fca4d | 3995 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3996 | { |
3997 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3998 | unsigned int count; | |
3999 | struct elf_segment_map *m; | |
4000 | unsigned int alloc; | |
4001 | Elf_Internal_Phdr *phdrs; | |
4002 | file_ptr off, voff; | |
4003 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
4004 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
4005 | Elf_Internal_Phdr *p; | |
dc810e39 | 4006 | bfd_size_type amt; |
252b5132 RH |
4007 | |
4008 | if (elf_tdata (abfd)->segment_map == NULL) | |
4009 | { | |
4010 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 4011 | return FALSE; |
252b5132 | 4012 | } |
1ed89aa9 NC |
4013 | else |
4014 | { | |
4015 | /* The placement algorithm assumes that non allocated sections are | |
4016 | not in PT_LOAD segments. We ensure this here by removing such | |
4017 | sections from the segment map. */ | |
4018 | for (m = elf_tdata (abfd)->segment_map; | |
4019 | m != NULL; | |
4020 | m = m->next) | |
4021 | { | |
4022 | unsigned int new_count; | |
4023 | unsigned int i; | |
4024 | ||
4025 | if (m->p_type != PT_LOAD) | |
4026 | continue; | |
4027 | ||
4028 | new_count = 0; | |
4029 | for (i = 0; i < m->count; i ++) | |
4030 | { | |
4031 | if ((m->sections[i]->flags & SEC_ALLOC) != 0) | |
4032 | { | |
47d9a591 | 4033 | if (i != new_count) |
1ed89aa9 NC |
4034 | m->sections[new_count] = m->sections[i]; |
4035 | ||
4036 | new_count ++; | |
4037 | } | |
4038 | } | |
4039 | ||
4040 | if (new_count != m->count) | |
4041 | m->count = new_count; | |
4042 | } | |
4043 | } | |
252b5132 RH |
4044 | |
4045 | if (bed->elf_backend_modify_segment_map) | |
4046 | { | |
c84fca4d | 4047 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 4048 | return FALSE; |
252b5132 RH |
4049 | } |
4050 | ||
4051 | count = 0; | |
4052 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4053 | ++count; | |
4054 | ||
4055 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
4056 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
4057 | elf_elfheader (abfd)->e_phnum = count; | |
4058 | ||
4059 | if (count == 0) | |
0ebdbb83 BW |
4060 | { |
4061 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
4062 | return TRUE; | |
4063 | } | |
252b5132 RH |
4064 | |
4065 | /* If we already counted the number of program segments, make sure | |
4066 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
4067 | is used in a linker script. */ | |
4068 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
4069 | if (alloc != 0 && count > alloc) | |
4070 | { | |
4071 | ((*_bfd_error_handler) | |
b301b248 AM |
4072 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
4073 | abfd, alloc, count)); | |
252b5132 | 4074 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4075 | return FALSE; |
252b5132 RH |
4076 | } |
4077 | ||
4078 | if (alloc == 0) | |
4079 | alloc = count; | |
4080 | ||
dc810e39 | 4081 | amt = alloc * sizeof (Elf_Internal_Phdr); |
217aa764 | 4082 | phdrs = bfd_alloc (abfd, amt); |
252b5132 | 4083 | if (phdrs == NULL) |
b34976b6 | 4084 | return FALSE; |
252b5132 RH |
4085 | |
4086 | off = bed->s->sizeof_ehdr; | |
4087 | off += alloc * bed->s->sizeof_phdr; | |
4088 | ||
4089 | filehdr_vaddr = 0; | |
4090 | filehdr_paddr = 0; | |
4091 | phdrs_vaddr = 0; | |
4092 | phdrs_paddr = 0; | |
4093 | ||
4094 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4095 | m != NULL; | |
4096 | m = m->next, p++) | |
4097 | { | |
4098 | unsigned int i; | |
4099 | asection **secpp; | |
4100 | ||
4101 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 4102 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
4103 | not be done to the PT_NOTE section of a corefile, which may |
4104 | contain several pseudo-sections artificially created by bfd. | |
4105 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
4106 | if (m->count > 1 |
4107 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4108 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4109 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4110 | elf_sort_sections); | |
4111 | ||
b301b248 AM |
4112 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4113 | number of sections with contents contributing to both p_filesz | |
4114 | and p_memsz, followed by a number of sections with no contents | |
4115 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4116 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4117 | an adjustment we use for segments that have no file contents | |
4118 | but need zero filled memory allocation. */ | |
4119 | voff = 0; | |
252b5132 | 4120 | p->p_type = m->p_type; |
28a7f3e7 | 4121 | p->p_flags = m->p_flags; |
252b5132 RH |
4122 | |
4123 | if (p->p_type == PT_LOAD | |
b301b248 | 4124 | && m->count > 0) |
252b5132 | 4125 | { |
b301b248 AM |
4126 | bfd_size_type align; |
4127 | bfd_vma adjust; | |
4128 | ||
252b5132 | 4129 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 | 4130 | align = bed->maxpagesize; |
252b5132 RH |
4131 | else |
4132 | { | |
b301b248 | 4133 | unsigned int align_power = 0; |
252b5132 RH |
4134 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4135 | { | |
b301b248 | 4136 | unsigned int secalign; |
252b5132 RH |
4137 | |
4138 | secalign = bfd_get_section_alignment (abfd, *secpp); | |
b301b248 AM |
4139 | if (secalign > align_power) |
4140 | align_power = secalign; | |
252b5132 | 4141 | } |
b301b248 AM |
4142 | align = (bfd_size_type) 1 << align_power; |
4143 | } | |
252b5132 | 4144 | |
b301b248 AM |
4145 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4146 | off += adjust; | |
4147 | if (adjust != 0 | |
4148 | && !m->includes_filehdr | |
4149 | && !m->includes_phdrs | |
4150 | && (ufile_ptr) off >= align) | |
4151 | { | |
4152 | /* If the first section isn't loadable, the same holds for | |
4153 | any other sections. Since the segment won't need file | |
4154 | space, we can make p_offset overlap some prior segment. | |
4155 | However, .tbss is special. If a segment starts with | |
4156 | .tbss, we need to look at the next section to decide | |
4157 | whether the segment has any loadable sections. */ | |
4158 | i = 0; | |
5efb6261 | 4159 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4160 | { |
4161 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4162 | || ++i >= m->count) | |
4163 | { | |
4164 | off -= adjust; | |
4165 | voff = adjust - align; | |
4166 | break; | |
4167 | } | |
4168 | } | |
252b5132 RH |
4169 | } |
4170 | } | |
b1a6d0b1 NC |
4171 | /* Make sure the .dynamic section is the first section in the |
4172 | PT_DYNAMIC segment. */ | |
4173 | else if (p->p_type == PT_DYNAMIC | |
4174 | && m->count > 1 | |
4175 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4176 | { | |
4177 | _bfd_error_handler | |
b301b248 AM |
4178 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4179 | abfd); | |
b1a6d0b1 NC |
4180 | bfd_set_error (bfd_error_bad_value); |
4181 | return FALSE; | |
4182 | } | |
252b5132 RH |
4183 | |
4184 | if (m->count == 0) | |
4185 | p->p_vaddr = 0; | |
4186 | else | |
4187 | p->p_vaddr = m->sections[0]->vma; | |
4188 | ||
4189 | if (m->p_paddr_valid) | |
4190 | p->p_paddr = m->p_paddr; | |
4191 | else if (m->count == 0) | |
4192 | p->p_paddr = 0; | |
4193 | else | |
4194 | p->p_paddr = m->sections[0]->lma; | |
4195 | ||
4196 | if (p->p_type == PT_LOAD | |
4197 | && (abfd->flags & D_PAGED) != 0) | |
4198 | p->p_align = bed->maxpagesize; | |
4199 | else if (m->count == 0) | |
45d6a902 | 4200 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4201 | else |
4202 | p->p_align = 0; | |
4203 | ||
4204 | p->p_offset = 0; | |
4205 | p->p_filesz = 0; | |
4206 | p->p_memsz = 0; | |
4207 | ||
4208 | if (m->includes_filehdr) | |
4209 | { | |
4210 | if (! m->p_flags_valid) | |
4211 | p->p_flags |= PF_R; | |
4212 | p->p_offset = 0; | |
4213 | p->p_filesz = bed->s->sizeof_ehdr; | |
4214 | p->p_memsz = bed->s->sizeof_ehdr; | |
4215 | if (m->count > 0) | |
4216 | { | |
4217 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4218 | ||
4219 | if (p->p_vaddr < (bfd_vma) off) | |
4220 | { | |
caf47ea6 | 4221 | (*_bfd_error_handler) |
b301b248 AM |
4222 | (_("%B: Not enough room for program headers, try linking with -N"), |
4223 | abfd); | |
252b5132 | 4224 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4225 | return FALSE; |
252b5132 RH |
4226 | } |
4227 | ||
4228 | p->p_vaddr -= off; | |
4229 | if (! m->p_paddr_valid) | |
4230 | p->p_paddr -= off; | |
4231 | } | |
4232 | if (p->p_type == PT_LOAD) | |
4233 | { | |
4234 | filehdr_vaddr = p->p_vaddr; | |
4235 | filehdr_paddr = p->p_paddr; | |
4236 | } | |
4237 | } | |
4238 | ||
4239 | if (m->includes_phdrs) | |
4240 | { | |
4241 | if (! m->p_flags_valid) | |
4242 | p->p_flags |= PF_R; | |
4243 | ||
4244 | if (m->includes_filehdr) | |
4245 | { | |
4246 | if (p->p_type == PT_LOAD) | |
4247 | { | |
4248 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4249 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4250 | } | |
4251 | } | |
4252 | else | |
4253 | { | |
4254 | p->p_offset = bed->s->sizeof_ehdr; | |
4255 | ||
4256 | if (m->count > 0) | |
4257 | { | |
4258 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4259 | p->p_vaddr -= off - p->p_offset; | |
4260 | if (! m->p_paddr_valid) | |
4261 | p->p_paddr -= off - p->p_offset; | |
4262 | } | |
4263 | ||
4264 | if (p->p_type == PT_LOAD) | |
4265 | { | |
4266 | phdrs_vaddr = p->p_vaddr; | |
4267 | phdrs_paddr = p->p_paddr; | |
4268 | } | |
4269 | else | |
4270 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4271 | } | |
4272 | ||
4273 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4274 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4275 | } | |
4276 | ||
4277 | if (p->p_type == PT_LOAD | |
4278 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4279 | { | |
4280 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4281 | p->p_offset = off + voff; |
252b5132 RH |
4282 | else |
4283 | { | |
4284 | file_ptr adjust; | |
4285 | ||
4286 | adjust = off - (p->p_offset + p->p_filesz); | |
4287 | p->p_filesz += adjust; | |
4288 | p->p_memsz += adjust; | |
4289 | } | |
4290 | } | |
4291 | ||
252b5132 RH |
4292 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4293 | { | |
4294 | asection *sec; | |
4295 | flagword flags; | |
4296 | bfd_size_type align; | |
4297 | ||
4298 | sec = *secpp; | |
4299 | flags = sec->flags; | |
4300 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4301 | ||
b301b248 AM |
4302 | if (p->p_type == PT_LOAD |
4303 | || p->p_type == PT_TLS) | |
252b5132 RH |
4304 | { |
4305 | bfd_signed_vma adjust; | |
4306 | ||
5efb6261 | 4307 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4308 | { |
b301b248 | 4309 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4310 | if (adjust < 0) |
b301b248 AM |
4311 | { |
4312 | (*_bfd_error_handler) | |
4313 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4314 | abfd, sec, (unsigned long) sec->lma); | |
4315 | adjust = 0; | |
4316 | } | |
4317 | off += adjust; | |
4318 | p->p_filesz += adjust; | |
4319 | p->p_memsz += adjust; | |
252b5132 | 4320 | } |
b301b248 AM |
4321 | /* .tbss is special. It doesn't contribute to p_memsz of |
4322 | normal segments. */ | |
4323 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4324 | || p->p_type == PT_TLS) | |
252b5132 RH |
4325 | { |
4326 | /* The section VMA must equal the file position | |
b301b248 AM |
4327 | modulo the page size. */ |
4328 | bfd_size_type page = align; | |
252b5132 | 4329 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 AM |
4330 | page = bed->maxpagesize; |
4331 | adjust = vma_page_aligned_bias (sec->vma, | |
4332 | p->p_vaddr + p->p_memsz, | |
4333 | page); | |
252b5132 | 4334 | p->p_memsz += adjust; |
252b5132 | 4335 | } |
252b5132 RH |
4336 | } |
4337 | ||
4338 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4339 | { | |
b301b248 AM |
4340 | /* The section at i == 0 is the one that actually contains |
4341 | everything. */ | |
4a938328 MS |
4342 | if (i == 0) |
4343 | { | |
252b5132 | 4344 | sec->filepos = off; |
eea6121a | 4345 | off += sec->size; |
b301b248 AM |
4346 | p->p_filesz = sec->size; |
4347 | p->p_memsz = 0; | |
4348 | p->p_align = 1; | |
252b5132 | 4349 | } |
4a938328 | 4350 | else |
252b5132 | 4351 | { |
b301b248 | 4352 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4353 | sec->filepos = 0; |
eea6121a | 4354 | sec->size = 0; |
b301b248 AM |
4355 | sec->flags = 0; |
4356 | continue; | |
252b5132 | 4357 | } |
252b5132 RH |
4358 | } |
4359 | else | |
4360 | { | |
b301b248 AM |
4361 | if (p->p_type == PT_LOAD) |
4362 | { | |
4363 | sec->filepos = off; | |
5efb6261 AM |
4364 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4365 | 1997, and the exact reason for it isn't clear. One | |
4366 | plausible explanation is that it is to work around | |
4367 | a problem we have with linker scripts using data | |
4368 | statements in NOLOAD sections. I don't think it | |
4369 | makes a great deal of sense to have such a section | |
4370 | assigned to a PT_LOAD segment, but apparently | |
4371 | people do this. The data statement results in a | |
4372 | bfd_data_link_order being built, and these need | |
4373 | section contents to write into. Eventually, we get | |
4374 | to _bfd_elf_write_object_contents which writes any | |
4375 | section with contents to the output. Make room | |
4376 | here for the write, so that following segments are | |
4377 | not trashed. */ | |
4378 | if ((flags & SEC_LOAD) != 0 | |
4379 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4380 | off += sec->size; |
4381 | } | |
252b5132 | 4382 | |
5efb6261 | 4383 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4384 | { |
4385 | p->p_filesz += sec->size; | |
4386 | p->p_memsz += sec->size; | |
4387 | } | |
4b6c0f2f NC |
4388 | /* PR ld/594: Sections in note segments which are not loaded |
4389 | contribute to the file size but not the in-memory size. */ | |
4390 | else if (p->p_type == PT_NOTE | |
4391 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4392 | p->p_filesz += sec->size; | |
4393 | ||
b301b248 AM |
4394 | /* .tbss is special. It doesn't contribute to p_memsz of |
4395 | normal segments. */ | |
4396 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4397 | || p->p_type == PT_TLS) | |
4398 | p->p_memsz += sec->size; | |
252b5132 | 4399 | |
13ae64f3 | 4400 | if (p->p_type == PT_TLS |
eea6121a | 4401 | && sec->size == 0 |
13ae64f3 JJ |
4402 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4403 | { | |
4404 | struct bfd_link_order *o; | |
4405 | bfd_vma tbss_size = 0; | |
4406 | ||
8423293d | 4407 | for (o = sec->map_head.link_order; o != NULL; o = o->next) |
13ae64f3 JJ |
4408 | if (tbss_size < o->offset + o->size) |
4409 | tbss_size = o->offset + o->size; | |
4410 | ||
4411 | p->p_memsz += tbss_size; | |
4412 | } | |
4413 | ||
252b5132 RH |
4414 | if (align > p->p_align |
4415 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4416 | p->p_align = align; | |
4417 | } | |
4418 | ||
4419 | if (! m->p_flags_valid) | |
4420 | { | |
4421 | p->p_flags |= PF_R; | |
4422 | if ((flags & SEC_CODE) != 0) | |
4423 | p->p_flags |= PF_X; | |
4424 | if ((flags & SEC_READONLY) == 0) | |
4425 | p->p_flags |= PF_W; | |
4426 | } | |
4427 | } | |
4428 | } | |
4429 | ||
4430 | /* Now that we have set the section file positions, we can set up | |
4431 | the file positions for the non PT_LOAD segments. */ | |
4432 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4433 | m != NULL; | |
4434 | m = m->next, p++) | |
4435 | { | |
4436 | if (p->p_type != PT_LOAD && m->count > 0) | |
4437 | { | |
4438 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4439 | /* If the section has not yet been assigned a file position, |
4440 | do so now. The ARM BPABI requires that .dynamic section | |
4441 | not be marked SEC_ALLOC because it is not part of any | |
4442 | PT_LOAD segment, so it will not be processed above. */ | |
4443 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4444 | { | |
4445 | unsigned int i; | |
4446 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4447 | ||
4448 | i = 1; | |
4449 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4450 | ++i; | |
4451 | off = (_bfd_elf_assign_file_position_for_section | |
4452 | (i_shdrpp[i], off, TRUE)); | |
4453 | p->p_filesz = m->sections[0]->size; | |
4454 | } | |
252b5132 RH |
4455 | p->p_offset = m->sections[0]->filepos; |
4456 | } | |
4457 | if (m->count == 0) | |
4458 | { | |
4459 | if (m->includes_filehdr) | |
4460 | { | |
4461 | p->p_vaddr = filehdr_vaddr; | |
4462 | if (! m->p_paddr_valid) | |
4463 | p->p_paddr = filehdr_paddr; | |
4464 | } | |
4465 | else if (m->includes_phdrs) | |
4466 | { | |
4467 | p->p_vaddr = phdrs_vaddr; | |
4468 | if (! m->p_paddr_valid) | |
4469 | p->p_paddr = phdrs_paddr; | |
4470 | } | |
8c37241b JJ |
4471 | else if (p->p_type == PT_GNU_RELRO) |
4472 | { | |
4473 | Elf_Internal_Phdr *lp; | |
4474 | ||
4475 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4476 | { | |
4477 | if (lp->p_type == PT_LOAD | |
4478 | && lp->p_vaddr <= link_info->relro_end | |
4479 | && lp->p_vaddr >= link_info->relro_start | |
4480 | && lp->p_vaddr + lp->p_filesz | |
4481 | >= link_info->relro_end) | |
4482 | break; | |
4483 | } | |
4484 | ||
4485 | if (lp < phdrs + count | |
4486 | && link_info->relro_end > lp->p_vaddr) | |
4487 | { | |
4488 | p->p_vaddr = lp->p_vaddr; | |
4489 | p->p_paddr = lp->p_paddr; | |
4490 | p->p_offset = lp->p_offset; | |
4491 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4492 | p->p_memsz = p->p_filesz; | |
4493 | p->p_align = 1; | |
4494 | p->p_flags = (lp->p_flags & ~PF_W); | |
4495 | } | |
4496 | else | |
4497 | { | |
4498 | memset (p, 0, sizeof *p); | |
4499 | p->p_type = PT_NULL; | |
4500 | } | |
4501 | } | |
252b5132 RH |
4502 | } |
4503 | } | |
4504 | ||
4505 | /* Clear out any program headers we allocated but did not use. */ | |
4506 | for (; count < alloc; count++, p++) | |
4507 | { | |
4508 | memset (p, 0, sizeof *p); | |
4509 | p->p_type = PT_NULL; | |
4510 | } | |
4511 | ||
4512 | elf_tdata (abfd)->phdr = phdrs; | |
4513 | ||
4514 | elf_tdata (abfd)->next_file_pos = off; | |
4515 | ||
4516 | /* Write out the program headers. */ | |
dc810e39 | 4517 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4518 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4519 | return FALSE; |
252b5132 | 4520 | |
b34976b6 | 4521 | return TRUE; |
252b5132 RH |
4522 | } |
4523 | ||
4524 | /* Get the size of the program header. | |
4525 | ||
4526 | If this is called by the linker before any of the section VMA's are set, it | |
4527 | can't calculate the correct value for a strange memory layout. This only | |
4528 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4529 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4530 | data segment (exclusive of .interp and .dynamic). | |
4531 | ||
4532 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4533 | will be two segments. */ | |
4534 | ||
4535 | static bfd_size_type | |
217aa764 | 4536 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4537 | { |
4538 | size_t segs; | |
4539 | asection *s; | |
9c5bfbb7 | 4540 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4541 | |
4542 | /* We can't return a different result each time we're called. */ | |
4543 | if (elf_tdata (abfd)->program_header_size != 0) | |
4544 | return elf_tdata (abfd)->program_header_size; | |
4545 | ||
4546 | if (elf_tdata (abfd)->segment_map != NULL) | |
4547 | { | |
4548 | struct elf_segment_map *m; | |
4549 | ||
4550 | segs = 0; | |
4551 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4552 | ++segs; | |
4553 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4554 | return elf_tdata (abfd)->program_header_size; | |
4555 | } | |
4556 | ||
4557 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4558 | and one for data. */ | |
4559 | segs = 2; | |
4560 | ||
4561 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4562 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4563 | { | |
4564 | /* If we have a loadable interpreter section, we need a | |
4565 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4566 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4567 | targets. */ |
4568 | segs += 2; | |
4569 | } | |
4570 | ||
4571 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4572 | { | |
4573 | /* We need a PT_DYNAMIC segment. */ | |
4574 | ++segs; | |
4575 | } | |
4576 | ||
126495ed | 4577 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4578 | { |
4579 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4580 | ++segs; | |
4581 | } | |
4582 | ||
9ee5e499 JJ |
4583 | if (elf_tdata (abfd)->stack_flags) |
4584 | { | |
4585 | /* We need a PT_GNU_STACK segment. */ | |
4586 | ++segs; | |
4587 | } | |
4588 | ||
8c37241b JJ |
4589 | if (elf_tdata (abfd)->relro) |
4590 | { | |
4591 | /* We need a PT_GNU_RELRO segment. */ | |
4592 | ++segs; | |
4593 | } | |
4594 | ||
252b5132 RH |
4595 | for (s = abfd->sections; s != NULL; s = s->next) |
4596 | { | |
4597 | if ((s->flags & SEC_LOAD) != 0 | |
4598 | && strncmp (s->name, ".note", 5) == 0) | |
4599 | { | |
4600 | /* We need a PT_NOTE segment. */ | |
4601 | ++segs; | |
4602 | } | |
4603 | } | |
4604 | ||
13ae64f3 JJ |
4605 | for (s = abfd->sections; s != NULL; s = s->next) |
4606 | { | |
4607 | if (s->flags & SEC_THREAD_LOCAL) | |
4608 | { | |
4609 | /* We need a PT_TLS segment. */ | |
4610 | ++segs; | |
4611 | break; | |
4612 | } | |
4613 | } | |
4614 | ||
252b5132 RH |
4615 | /* Let the backend count up any program headers it might need. */ |
4616 | if (bed->elf_backend_additional_program_headers) | |
4617 | { | |
4618 | int a; | |
4619 | ||
4620 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4621 | if (a == -1) | |
4622 | abort (); | |
4623 | segs += a; | |
4624 | } | |
4625 | ||
4626 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4627 | return elf_tdata (abfd)->program_header_size; | |
4628 | } | |
4629 | ||
4630 | /* Work out the file positions of all the sections. This is called by | |
4631 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4632 | VMAs must be known before this is called. | |
4633 | ||
e0638f70 AM |
4634 | Reloc sections come in two flavours: Those processed specially as |
4635 | "side-channel" data attached to a section to which they apply, and | |
4636 | those that bfd doesn't process as relocations. The latter sort are | |
4637 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4638 | consider the former sort here, unless they form part of the loadable | |
4639 | image. Reloc sections not assigned here will be handled later by | |
4640 | assign_file_positions_for_relocs. | |
252b5132 RH |
4641 | |
4642 | We also don't set the positions of the .symtab and .strtab here. */ | |
4643 | ||
b34976b6 | 4644 | static bfd_boolean |
c84fca4d AO |
4645 | assign_file_positions_except_relocs (bfd *abfd, |
4646 | struct bfd_link_info *link_info) | |
252b5132 RH |
4647 | { |
4648 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4649 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4650 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4651 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4652 | file_ptr off; |
9c5bfbb7 | 4653 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4654 | |
4655 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4656 | && bfd_get_format (abfd) != bfd_core) | |
4657 | { | |
4658 | Elf_Internal_Shdr **hdrpp; | |
4659 | unsigned int i; | |
4660 | ||
4661 | /* Start after the ELF header. */ | |
4662 | off = i_ehdrp->e_ehsize; | |
4663 | ||
4664 | /* We are not creating an executable, which means that we are | |
4665 | not creating a program header, and that the actual order of | |
4666 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4667 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4668 | { |
4669 | Elf_Internal_Shdr *hdr; | |
4670 | ||
4671 | hdr = *hdrpp; | |
e0638f70 AM |
4672 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4673 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4674 | || i == tdata->symtab_section |
4675 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4676 | || i == tdata->strtab_section) |
4677 | { | |
4678 | hdr->sh_offset = -1; | |
252b5132 | 4679 | } |
9ad5cbcf | 4680 | else |
b34976b6 | 4681 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4682 | |
9ad5cbcf AM |
4683 | if (i == SHN_LORESERVE - 1) |
4684 | { | |
4685 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4686 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4687 | } | |
252b5132 RH |
4688 | } |
4689 | } | |
4690 | else | |
4691 | { | |
4692 | unsigned int i; | |
4693 | Elf_Internal_Shdr **hdrpp; | |
4694 | ||
4695 | /* Assign file positions for the loaded sections based on the | |
4696 | assignment of sections to segments. */ | |
c84fca4d | 4697 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4698 | return FALSE; |
252b5132 RH |
4699 | |
4700 | /* Assign file positions for the other sections. */ | |
4701 | ||
4702 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4703 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4704 | { |
4705 | Elf_Internal_Shdr *hdr; | |
4706 | ||
4707 | hdr = *hdrpp; | |
4708 | if (hdr->bfd_section != NULL | |
4709 | && hdr->bfd_section->filepos != 0) | |
4710 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4711 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4712 | { | |
4713 | ((*_bfd_error_handler) | |
b301b248 AM |
4714 | (_("%B: warning: allocated section `%s' not in segment"), |
4715 | abfd, | |
252b5132 RH |
4716 | (hdr->bfd_section == NULL |
4717 | ? "*unknown*" | |
4718 | : hdr->bfd_section->name))); | |
4719 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4720 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4721 | bed->maxpagesize); | |
252b5132 | 4722 | else |
340b6d91 AC |
4723 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4724 | hdr->sh_addralign); | |
252b5132 | 4725 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4726 | FALSE); |
252b5132 | 4727 | } |
e0638f70 AM |
4728 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4729 | && hdr->bfd_section == NULL) | |
252b5132 | 4730 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4731 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4732 | || hdr == i_shdrpp[tdata->strtab_section]) |
4733 | hdr->sh_offset = -1; | |
4734 | else | |
b34976b6 | 4735 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4736 | |
4737 | if (i == SHN_LORESERVE - 1) | |
4738 | { | |
4739 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4740 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4741 | } | |
252b5132 RH |
4742 | } |
4743 | } | |
4744 | ||
4745 | /* Place the section headers. */ | |
45d6a902 | 4746 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4747 | i_ehdrp->e_shoff = off; |
4748 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4749 | ||
4750 | elf_tdata (abfd)->next_file_pos = off; | |
4751 | ||
b34976b6 | 4752 | return TRUE; |
252b5132 RH |
4753 | } |
4754 | ||
b34976b6 | 4755 | static bfd_boolean |
217aa764 | 4756 | prep_headers (bfd *abfd) |
252b5132 RH |
4757 | { |
4758 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4759 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4760 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4761 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4762 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4763 | |
4764 | i_ehdrp = elf_elfheader (abfd); | |
4765 | i_shdrp = elf_elfsections (abfd); | |
4766 | ||
2b0f7ef9 | 4767 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4768 | if (shstrtab == NULL) |
b34976b6 | 4769 | return FALSE; |
252b5132 RH |
4770 | |
4771 | elf_shstrtab (abfd) = shstrtab; | |
4772 | ||
4773 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4774 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4775 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4776 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4777 | ||
4778 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4779 | i_ehdrp->e_ident[EI_DATA] = | |
4780 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4781 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4782 | ||
252b5132 RH |
4783 | if ((abfd->flags & DYNAMIC) != 0) |
4784 | i_ehdrp->e_type = ET_DYN; | |
4785 | else if ((abfd->flags & EXEC_P) != 0) | |
4786 | i_ehdrp->e_type = ET_EXEC; | |
4787 | else if (bfd_get_format (abfd) == bfd_core) | |
4788 | i_ehdrp->e_type = ET_CORE; | |
4789 | else | |
4790 | i_ehdrp->e_type = ET_REL; | |
4791 | ||
4792 | switch (bfd_get_arch (abfd)) | |
4793 | { | |
4794 | case bfd_arch_unknown: | |
4795 | i_ehdrp->e_machine = EM_NONE; | |
4796 | break; | |
aa4f99bb AO |
4797 | |
4798 | /* There used to be a long list of cases here, each one setting | |
4799 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4800 | in the corresponding bfd definition. To avoid duplication, | |
4801 | the switch was removed. Machines that need special handling | |
4802 | can generally do it in elf_backend_final_write_processing(), | |
4803 | unless they need the information earlier than the final write. | |
4804 | Such need can generally be supplied by replacing the tests for | |
4805 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4806 | default: |
9c5bfbb7 AM |
4807 | i_ehdrp->e_machine = bed->elf_machine_code; |
4808 | } | |
aa4f99bb | 4809 | |
252b5132 RH |
4810 | i_ehdrp->e_version = bed->s->ev_current; |
4811 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4812 | ||
c044fabd | 4813 | /* No program header, for now. */ |
252b5132 RH |
4814 | i_ehdrp->e_phoff = 0; |
4815 | i_ehdrp->e_phentsize = 0; | |
4816 | i_ehdrp->e_phnum = 0; | |
4817 | ||
c044fabd | 4818 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4819 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4820 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4821 | ||
c044fabd | 4822 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4823 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4824 | /* It all happens later. */ |
4825 | ; | |
252b5132 RH |
4826 | else |
4827 | { | |
4828 | i_ehdrp->e_phentsize = 0; | |
4829 | i_phdrp = 0; | |
4830 | i_ehdrp->e_phoff = 0; | |
4831 | } | |
4832 | ||
4833 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4834 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4835 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4836 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4837 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4838 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4839 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4840 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4841 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4842 | return FALSE; |
252b5132 | 4843 | |
b34976b6 | 4844 | return TRUE; |
252b5132 RH |
4845 | } |
4846 | ||
4847 | /* Assign file positions for all the reloc sections which are not part | |
4848 | of the loadable file image. */ | |
4849 | ||
4850 | void | |
217aa764 | 4851 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4852 | { |
4853 | file_ptr off; | |
9ad5cbcf | 4854 | unsigned int i, num_sec; |
252b5132 RH |
4855 | Elf_Internal_Shdr **shdrpp; |
4856 | ||
4857 | off = elf_tdata (abfd)->next_file_pos; | |
4858 | ||
9ad5cbcf AM |
4859 | num_sec = elf_numsections (abfd); |
4860 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4861 | { |
4862 | Elf_Internal_Shdr *shdrp; | |
4863 | ||
4864 | shdrp = *shdrpp; | |
4865 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4866 | && shdrp->sh_offset == -1) | |
b34976b6 | 4867 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4868 | } |
4869 | ||
4870 | elf_tdata (abfd)->next_file_pos = off; | |
4871 | } | |
4872 | ||
b34976b6 | 4873 | bfd_boolean |
217aa764 | 4874 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4875 | { |
9c5bfbb7 | 4876 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4877 | Elf_Internal_Ehdr *i_ehdrp; |
4878 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4879 | bfd_boolean failed; |
9ad5cbcf | 4880 | unsigned int count, num_sec; |
252b5132 RH |
4881 | |
4882 | if (! abfd->output_has_begun | |
217aa764 | 4883 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4884 | return FALSE; |
252b5132 RH |
4885 | |
4886 | i_shdrp = elf_elfsections (abfd); | |
4887 | i_ehdrp = elf_elfheader (abfd); | |
4888 | ||
b34976b6 | 4889 | failed = FALSE; |
252b5132 RH |
4890 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4891 | if (failed) | |
b34976b6 | 4892 | return FALSE; |
252b5132 RH |
4893 | |
4894 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4895 | ||
c044fabd | 4896 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4897 | num_sec = elf_numsections (abfd); |
4898 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4899 | { |
4900 | if (bed->elf_backend_section_processing) | |
4901 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4902 | if (i_shdrp[count]->contents) | |
4903 | { | |
dc810e39 AM |
4904 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4905 | ||
252b5132 | 4906 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4907 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4908 | return FALSE; |
252b5132 | 4909 | } |
9ad5cbcf AM |
4910 | if (count == SHN_LORESERVE - 1) |
4911 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4912 | } |
4913 | ||
4914 | /* Write out the section header names. */ | |
4915 | if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
2b0f7ef9 | 4916 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))) |
b34976b6 | 4917 | return FALSE; |
252b5132 RH |
4918 | |
4919 | if (bed->elf_backend_final_write_processing) | |
4920 | (*bed->elf_backend_final_write_processing) (abfd, | |
4921 | elf_tdata (abfd)->linker); | |
4922 | ||
4923 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4924 | } | |
4925 | ||
b34976b6 | 4926 | bfd_boolean |
217aa764 | 4927 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4928 | { |
c044fabd | 4929 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4930 | return _bfd_elf_write_object_contents (abfd); |
4931 | } | |
c044fabd KH |
4932 | |
4933 | /* Given a section, search the header to find them. */ | |
4934 | ||
252b5132 | 4935 | int |
198beae2 | 4936 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4937 | { |
9c5bfbb7 | 4938 | const struct elf_backend_data *bed; |
252b5132 | 4939 | int index; |
252b5132 | 4940 | |
9ad5cbcf AM |
4941 | if (elf_section_data (asect) != NULL |
4942 | && elf_section_data (asect)->this_idx != 0) | |
4943 | return elf_section_data (asect)->this_idx; | |
4944 | ||
4945 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4946 | index = SHN_ABS; |
4947 | else if (bfd_is_com_section (asect)) | |
4948 | index = SHN_COMMON; | |
4949 | else if (bfd_is_und_section (asect)) | |
4950 | index = SHN_UNDEF; | |
4951 | else | |
6dc132d9 | 4952 | index = -1; |
252b5132 | 4953 | |
af746e92 | 4954 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4955 | if (bed->elf_backend_section_from_bfd_section) |
4956 | { | |
af746e92 | 4957 | int retval = index; |
9ad5cbcf | 4958 | |
af746e92 AM |
4959 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4960 | return retval; | |
252b5132 RH |
4961 | } |
4962 | ||
af746e92 AM |
4963 | if (index == -1) |
4964 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4965 | |
af746e92 | 4966 | return index; |
252b5132 RH |
4967 | } |
4968 | ||
4969 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4970 | on error. */ | |
4971 | ||
4972 | int | |
217aa764 | 4973 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4974 | { |
4975 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4976 | int idx; | |
4977 | flagword flags = asym_ptr->flags; | |
4978 | ||
4979 | /* When gas creates relocations against local labels, it creates its | |
4980 | own symbol for the section, but does put the symbol into the | |
4981 | symbol chain, so udata is 0. When the linker is generating | |
4982 | relocatable output, this section symbol may be for one of the | |
4983 | input sections rather than the output section. */ | |
4984 | if (asym_ptr->udata.i == 0 | |
4985 | && (flags & BSF_SECTION_SYM) | |
4986 | && asym_ptr->section) | |
4987 | { | |
4988 | int indx; | |
4989 | ||
4990 | if (asym_ptr->section->output_section != NULL) | |
4991 | indx = asym_ptr->section->output_section->index; | |
4992 | else | |
4993 | indx = asym_ptr->section->index; | |
4e89ac30 L |
4994 | if (indx < elf_num_section_syms (abfd) |
4995 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
4996 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
4997 | } | |
4998 | ||
4999 | idx = asym_ptr->udata.i; | |
5000 | ||
5001 | if (idx == 0) | |
5002 | { | |
5003 | /* This case can occur when using --strip-symbol on a symbol | |
5004 | which is used in a relocation entry. */ | |
5005 | (*_bfd_error_handler) | |
d003868e AM |
5006 | (_("%B: symbol `%s' required but not present"), |
5007 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
5008 | bfd_set_error (bfd_error_no_symbols); |
5009 | return -1; | |
5010 | } | |
5011 | ||
5012 | #if DEBUG & 4 | |
5013 | { | |
5014 | fprintf (stderr, | |
661a3fd4 | 5015 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
5016 | (long) asym_ptr, asym_ptr->name, idx, flags, |
5017 | elf_symbol_flags (flags)); | |
5018 | fflush (stderr); | |
5019 | } | |
5020 | #endif | |
5021 | ||
5022 | return idx; | |
5023 | } | |
5024 | ||
5025 | /* Copy private BFD data. This copies any program header information. */ | |
5026 | ||
b34976b6 | 5027 | static bfd_boolean |
217aa764 | 5028 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 5029 | { |
b34976b6 AM |
5030 | Elf_Internal_Ehdr *iehdr; |
5031 | struct elf_segment_map *map; | |
5032 | struct elf_segment_map *map_first; | |
5033 | struct elf_segment_map **pointer_to_map; | |
5034 | Elf_Internal_Phdr *segment; | |
5035 | asection *section; | |
5036 | unsigned int i; | |
5037 | unsigned int num_segments; | |
5038 | bfd_boolean phdr_included = FALSE; | |
5039 | bfd_vma maxpagesize; | |
5040 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
5041 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 5042 | const struct elf_backend_data *bed; |
bc67d8a6 | 5043 | |
c044fabd | 5044 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 5045 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 5046 | return TRUE; |
252b5132 RH |
5047 | |
5048 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 5049 | return TRUE; |
252b5132 | 5050 | |
caf47ea6 | 5051 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
5052 | iehdr = elf_elfheader (ibfd); |
5053 | ||
bc67d8a6 | 5054 | map_first = NULL; |
c044fabd | 5055 | pointer_to_map = &map_first; |
252b5132 RH |
5056 | |
5057 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
5058 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
5059 | ||
5060 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
5061 | #define SEGMENT_END(segment, start) \ |
5062 | (start + (segment->p_memsz > segment->p_filesz \ | |
5063 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 5064 | |
eecdbe52 JJ |
5065 | #define SECTION_SIZE(section, segment) \ |
5066 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
5067 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 5068 | ? section->size : 0) |
eecdbe52 | 5069 | |
b34976b6 | 5070 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5071 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
5072 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
5073 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 5074 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5075 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 5076 | |
b34976b6 | 5077 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 5078 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
5079 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
5080 | (section->lma >= base \ | |
eecdbe52 | 5081 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 5082 | <= SEGMENT_END (segment, base))) |
252b5132 | 5083 | |
c044fabd | 5084 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
5085 | #define IS_COREFILE_NOTE(p, s) \ |
5086 | (p->p_type == PT_NOTE \ | |
5087 | && bfd_get_format (ibfd) == bfd_core \ | |
5088 | && s->vma == 0 && s->lma == 0 \ | |
5089 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 5090 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5091 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
5092 | |
5093 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
5094 | linker, which generates a PT_INTERP section with p_vaddr and | |
5095 | p_memsz set to 0. */ | |
aecc8f8a AM |
5096 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
5097 | (p->p_vaddr == 0 \ | |
5098 | && p->p_paddr == 0 \ | |
5099 | && p->p_memsz == 0 \ | |
5100 | && p->p_filesz > 0 \ | |
5101 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 5102 | && s->size > 0 \ |
aecc8f8a | 5103 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 5104 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 5105 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 5106 | |
bc67d8a6 NC |
5107 | /* Decide if the given section should be included in the given segment. |
5108 | A section will be included if: | |
f5ffc919 NC |
5109 | 1. It is within the address space of the segment -- we use the LMA |
5110 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5111 | 2. It is an allocated segment, |
5112 | 3. There is an output section associated with it, | |
eecdbe52 | 5113 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5114 | 5. PT_GNU_STACK segments do not include any sections. |
5115 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5116 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5117 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5118 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5119 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5120 | ((((segment->p_paddr \ |
5121 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5122 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5123 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5124 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5125 | && section->output_section != NULL \ |
03394ac9 | 5126 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5127 | && (segment->p_type != PT_TLS \ |
5128 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5129 | && (segment->p_type == PT_LOAD \ | |
5130 | || segment->p_type == PT_TLS \ | |
5131 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5132 | && (segment->p_type != PT_DYNAMIC \ |
5133 | || SECTION_SIZE (section, segment) > 0 \ | |
5134 | || (segment->p_paddr \ | |
5135 | ? segment->p_paddr != section->lma \ | |
5136 | : segment->p_vaddr != section->vma) \ | |
5137 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5138 | == 0)) \ | |
82e51918 | 5139 | && ! section->segment_mark) |
bc67d8a6 | 5140 | |
b34976b6 | 5141 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5142 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5143 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5144 | ||
5145 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5146 | their VMA address ranges and their LMA address ranges overlap. | |
5147 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5148 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5149 | to the same VMA range, but with the .data section mapped to a different | |
5150 | LMA. */ | |
aecc8f8a | 5151 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5152 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5153 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5154 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5155 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5156 | |
5157 | /* Initialise the segment mark field. */ | |
5158 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5159 | section->segment_mark = FALSE; |
bc67d8a6 | 5160 | |
252b5132 | 5161 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5162 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5163 | in the loadable segments. These can be created by weird |
aecc8f8a | 5164 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5165 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5166 | i < num_segments; | |
c044fabd | 5167 | i++, segment++) |
252b5132 | 5168 | { |
252b5132 | 5169 | unsigned int j; |
c044fabd | 5170 | Elf_Internal_Phdr *segment2; |
252b5132 | 5171 | |
aecc8f8a AM |
5172 | if (segment->p_type == PT_INTERP) |
5173 | for (section = ibfd->sections; section; section = section->next) | |
5174 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5175 | { | |
5176 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5177 | assignment code will work. */ |
aecc8f8a AM |
5178 | segment->p_vaddr = section->vma; |
5179 | break; | |
5180 | } | |
5181 | ||
bc67d8a6 NC |
5182 | if (segment->p_type != PT_LOAD) |
5183 | continue; | |
c044fabd | 5184 | |
bc67d8a6 | 5185 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5186 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5187 | { |
5188 | bfd_signed_vma extra_length; | |
c044fabd | 5189 | |
bc67d8a6 NC |
5190 | if (segment2->p_type != PT_LOAD |
5191 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5192 | continue; | |
c044fabd | 5193 | |
bc67d8a6 NC |
5194 | /* Merge the two segments together. */ |
5195 | if (segment2->p_vaddr < segment->p_vaddr) | |
5196 | { | |
c044fabd KH |
5197 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5198 | SEGMENT. */ | |
bc67d8a6 NC |
5199 | extra_length = |
5200 | SEGMENT_END (segment, segment->p_vaddr) | |
5201 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5202 | |
bc67d8a6 NC |
5203 | if (extra_length > 0) |
5204 | { | |
5205 | segment2->p_memsz += extra_length; | |
5206 | segment2->p_filesz += extra_length; | |
5207 | } | |
c044fabd | 5208 | |
bc67d8a6 | 5209 | segment->p_type = PT_NULL; |
c044fabd | 5210 | |
bc67d8a6 NC |
5211 | /* Since we have deleted P we must restart the outer loop. */ |
5212 | i = 0; | |
5213 | segment = elf_tdata (ibfd)->phdr; | |
5214 | break; | |
5215 | } | |
5216 | else | |
5217 | { | |
c044fabd KH |
5218 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5219 | SEGMENT2. */ | |
bc67d8a6 NC |
5220 | extra_length = |
5221 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5222 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5223 | |
bc67d8a6 NC |
5224 | if (extra_length > 0) |
5225 | { | |
5226 | segment->p_memsz += extra_length; | |
5227 | segment->p_filesz += extra_length; | |
5228 | } | |
c044fabd | 5229 | |
bc67d8a6 NC |
5230 | segment2->p_type = PT_NULL; |
5231 | } | |
5232 | } | |
5233 | } | |
c044fabd | 5234 | |
bc67d8a6 NC |
5235 | /* The second scan attempts to assign sections to segments. */ |
5236 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5237 | i < num_segments; | |
5238 | i ++, segment ++) | |
5239 | { | |
5240 | unsigned int section_count; | |
5241 | asection ** sections; | |
5242 | asection * output_section; | |
5243 | unsigned int isec; | |
5244 | bfd_vma matching_lma; | |
5245 | bfd_vma suggested_lma; | |
5246 | unsigned int j; | |
dc810e39 | 5247 | bfd_size_type amt; |
bc67d8a6 NC |
5248 | |
5249 | if (segment->p_type == PT_NULL) | |
5250 | continue; | |
c044fabd | 5251 | |
bc67d8a6 | 5252 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5253 | for (section = ibfd->sections, section_count = 0; |
5254 | section != NULL; | |
5255 | section = section->next) | |
caf47ea6 | 5256 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5257 | ++section_count; |
811072d8 | 5258 | |
b5f852ea NC |
5259 | /* Allocate a segment map big enough to contain |
5260 | all of the sections we have selected. */ | |
dc810e39 AM |
5261 | amt = sizeof (struct elf_segment_map); |
5262 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5263 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5264 | if (map == NULL) |
b34976b6 | 5265 | return FALSE; |
252b5132 RH |
5266 | |
5267 | /* Initialise the fields of the segment map. Default to | |
5268 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5269 | map->next = NULL; |
5270 | map->p_type = segment->p_type; | |
5271 | map->p_flags = segment->p_flags; | |
5272 | map->p_flags_valid = 1; | |
5273 | map->p_paddr = segment->p_paddr; | |
5274 | map->p_paddr_valid = 1; | |
252b5132 RH |
5275 | |
5276 | /* Determine if this segment contains the ELF file header | |
5277 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5278 | map->includes_filehdr = (segment->p_offset == 0 |
5279 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5280 | |
bc67d8a6 | 5281 | map->includes_phdrs = 0; |
252b5132 | 5282 | |
bc67d8a6 | 5283 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5284 | { |
bc67d8a6 NC |
5285 | map->includes_phdrs = |
5286 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5287 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5288 | >= ((bfd_vma) iehdr->e_phoff |
5289 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5290 | |
bc67d8a6 | 5291 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5292 | phdr_included = TRUE; |
252b5132 RH |
5293 | } |
5294 | ||
bc67d8a6 | 5295 | if (section_count == 0) |
252b5132 RH |
5296 | { |
5297 | /* Special segments, such as the PT_PHDR segment, may contain | |
5298 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5299 | something. They are allowed by the ELF spec however, so only |
5300 | a warning is produced. */ | |
bc67d8a6 | 5301 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5302 | (*_bfd_error_handler) |
d003868e AM |
5303 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5304 | ibfd); | |
252b5132 | 5305 | |
bc67d8a6 | 5306 | map->count = 0; |
c044fabd KH |
5307 | *pointer_to_map = map; |
5308 | pointer_to_map = &map->next; | |
252b5132 RH |
5309 | |
5310 | continue; | |
5311 | } | |
5312 | ||
5313 | /* Now scan the sections in the input BFD again and attempt | |
5314 | to add their corresponding output sections to the segment map. | |
5315 | The problem here is how to handle an output section which has | |
5316 | been moved (ie had its LMA changed). There are four possibilities: | |
5317 | ||
5318 | 1. None of the sections have been moved. | |
5319 | In this case we can continue to use the segment LMA from the | |
5320 | input BFD. | |
5321 | ||
5322 | 2. All of the sections have been moved by the same amount. | |
5323 | In this case we can change the segment's LMA to match the LMA | |
5324 | of the first section. | |
5325 | ||
5326 | 3. Some of the sections have been moved, others have not. | |
5327 | In this case those sections which have not been moved can be | |
5328 | placed in the current segment which will have to have its size, | |
5329 | and possibly its LMA changed, and a new segment or segments will | |
5330 | have to be created to contain the other sections. | |
5331 | ||
b5f852ea | 5332 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5333 | In this case we can change the segment's LMA to match the LMA |
5334 | of the first section and we will have to create a new segment | |
5335 | or segments to contain the other sections. | |
5336 | ||
5337 | In order to save time, we allocate an array to hold the section | |
5338 | pointers that we are interested in. As these sections get assigned | |
5339 | to a segment, they are removed from this array. */ | |
5340 | ||
0b14c2aa L |
5341 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5342 | to work around this long long bug. */ | |
5343 | amt = section_count * sizeof (asection *); | |
217aa764 | 5344 | sections = bfd_malloc (amt); |
252b5132 | 5345 | if (sections == NULL) |
b34976b6 | 5346 | return FALSE; |
252b5132 RH |
5347 | |
5348 | /* Step One: Scan for segment vs section LMA conflicts. | |
5349 | Also add the sections to the section array allocated above. | |
5350 | Also add the sections to the current segment. In the common | |
5351 | case, where the sections have not been moved, this means that | |
5352 | we have completely filled the segment, and there is nothing | |
5353 | more to do. */ | |
252b5132 | 5354 | isec = 0; |
72730e0c | 5355 | matching_lma = 0; |
252b5132 RH |
5356 | suggested_lma = 0; |
5357 | ||
bc67d8a6 NC |
5358 | for (j = 0, section = ibfd->sections; |
5359 | section != NULL; | |
5360 | section = section->next) | |
252b5132 | 5361 | { |
caf47ea6 | 5362 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5363 | { |
bc67d8a6 NC |
5364 | output_section = section->output_section; |
5365 | ||
5366 | sections[j ++] = section; | |
252b5132 RH |
5367 | |
5368 | /* The Solaris native linker always sets p_paddr to 0. | |
5369 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5370 | correct value. Note - some backends require that |
5371 | p_paddr be left as zero. */ | |
bc67d8a6 | 5372 | if (segment->p_paddr == 0 |
4455705d | 5373 | && segment->p_vaddr != 0 |
5e8d7549 | 5374 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5375 | && isec == 0 |
bc67d8a6 NC |
5376 | && output_section->lma != 0 |
5377 | && (output_section->vma == (segment->p_vaddr | |
5378 | + (map->includes_filehdr | |
5379 | ? iehdr->e_ehsize | |
5380 | : 0) | |
5381 | + (map->includes_phdrs | |
079e9a2f AM |
5382 | ? (iehdr->e_phnum |
5383 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5384 | : 0)))) |
5385 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5386 | |
5387 | /* Match up the physical address of the segment with the | |
5388 | LMA address of the output section. */ | |
bc67d8a6 | 5389 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5390 | || IS_COREFILE_NOTE (segment, section) |
5391 | || (bed->want_p_paddr_set_to_zero && | |
5392 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5393 | ) | |
252b5132 RH |
5394 | { |
5395 | if (matching_lma == 0) | |
bc67d8a6 | 5396 | matching_lma = output_section->lma; |
252b5132 RH |
5397 | |
5398 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5399 | then it does not overlap any other section within that |
252b5132 | 5400 | segment. */ |
bc67d8a6 | 5401 | map->sections[isec ++] = output_section; |
252b5132 RH |
5402 | } |
5403 | else if (suggested_lma == 0) | |
bc67d8a6 | 5404 | suggested_lma = output_section->lma; |
252b5132 RH |
5405 | } |
5406 | } | |
5407 | ||
bc67d8a6 | 5408 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5409 | |
5410 | /* Step Two: Adjust the physical address of the current segment, | |
5411 | if necessary. */ | |
bc67d8a6 | 5412 | if (isec == section_count) |
252b5132 RH |
5413 | { |
5414 | /* All of the sections fitted within the segment as currently | |
5415 | specified. This is the default case. Add the segment to | |
5416 | the list of built segments and carry on to process the next | |
5417 | program header in the input BFD. */ | |
bc67d8a6 | 5418 | map->count = section_count; |
c044fabd KH |
5419 | *pointer_to_map = map; |
5420 | pointer_to_map = &map->next; | |
252b5132 RH |
5421 | |
5422 | free (sections); | |
5423 | continue; | |
5424 | } | |
252b5132 RH |
5425 | else |
5426 | { | |
72730e0c AM |
5427 | if (matching_lma != 0) |
5428 | { | |
5429 | /* At least one section fits inside the current segment. | |
5430 | Keep it, but modify its physical address to match the | |
5431 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5432 | map->p_paddr = matching_lma; |
72730e0c AM |
5433 | } |
5434 | else | |
5435 | { | |
5436 | /* None of the sections fitted inside the current segment. | |
5437 | Change the current segment's physical address to match | |
5438 | the LMA of the first section. */ | |
bc67d8a6 | 5439 | map->p_paddr = suggested_lma; |
72730e0c AM |
5440 | } |
5441 | ||
bc67d8a6 NC |
5442 | /* Offset the segment physical address from the lma |
5443 | to allow for space taken up by elf headers. */ | |
5444 | if (map->includes_filehdr) | |
5445 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5446 | |
bc67d8a6 NC |
5447 | if (map->includes_phdrs) |
5448 | { | |
5449 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5450 | ||
5451 | /* iehdr->e_phnum is just an estimate of the number | |
5452 | of program headers that we will need. Make a note | |
5453 | here of the number we used and the segment we chose | |
5454 | to hold these headers, so that we can adjust the | |
5455 | offset when we know the correct value. */ | |
5456 | phdr_adjust_num = iehdr->e_phnum; | |
5457 | phdr_adjust_seg = map; | |
5458 | } | |
252b5132 RH |
5459 | } |
5460 | ||
5461 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5462 | those that fit to the current segment and removing them from the |
252b5132 RH |
5463 | sections array; but making sure not to leave large gaps. Once all |
5464 | possible sections have been assigned to the current segment it is | |
5465 | added to the list of built segments and if sections still remain | |
5466 | to be assigned, a new segment is constructed before repeating | |
5467 | the loop. */ | |
5468 | isec = 0; | |
5469 | do | |
5470 | { | |
bc67d8a6 | 5471 | map->count = 0; |
252b5132 RH |
5472 | suggested_lma = 0; |
5473 | ||
5474 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5475 | for (j = 0; j < section_count; j++) |
252b5132 | 5476 | { |
bc67d8a6 | 5477 | section = sections[j]; |
252b5132 | 5478 | |
bc67d8a6 | 5479 | if (section == NULL) |
252b5132 RH |
5480 | continue; |
5481 | ||
bc67d8a6 | 5482 | output_section = section->output_section; |
252b5132 | 5483 | |
bc67d8a6 | 5484 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5485 | |
bc67d8a6 NC |
5486 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5487 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5488 | { |
bc67d8a6 | 5489 | if (map->count == 0) |
252b5132 RH |
5490 | { |
5491 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5492 | the beginning of the segment, then something is |
5493 | wrong. */ | |
5494 | if (output_section->lma != | |
5495 | (map->p_paddr | |
5496 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5497 | + (map->includes_phdrs | |
5498 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5499 | : 0))) | |
252b5132 RH |
5500 | abort (); |
5501 | } | |
5502 | else | |
5503 | { | |
5504 | asection * prev_sec; | |
252b5132 | 5505 | |
bc67d8a6 | 5506 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5507 | |
5508 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5509 | and the start of this section is more than |
5510 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5511 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5512 | maxpagesize) |
caf47ea6 | 5513 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5514 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5515 | > output_section->lma)) |
252b5132 RH |
5516 | { |
5517 | if (suggested_lma == 0) | |
bc67d8a6 | 5518 | suggested_lma = output_section->lma; |
252b5132 RH |
5519 | |
5520 | continue; | |
5521 | } | |
5522 | } | |
5523 | ||
bc67d8a6 | 5524 | map->sections[map->count++] = output_section; |
252b5132 RH |
5525 | ++isec; |
5526 | sections[j] = NULL; | |
b34976b6 | 5527 | section->segment_mark = TRUE; |
252b5132 RH |
5528 | } |
5529 | else if (suggested_lma == 0) | |
bc67d8a6 | 5530 | suggested_lma = output_section->lma; |
252b5132 RH |
5531 | } |
5532 | ||
bc67d8a6 | 5533 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5534 | |
5535 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5536 | *pointer_to_map = map; |
5537 | pointer_to_map = &map->next; | |
252b5132 | 5538 | |
bc67d8a6 | 5539 | if (isec < section_count) |
252b5132 RH |
5540 | { |
5541 | /* We still have not allocated all of the sections to | |
5542 | segments. Create a new segment here, initialise it | |
5543 | and carry on looping. */ | |
dc810e39 AM |
5544 | amt = sizeof (struct elf_segment_map); |
5545 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5546 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5547 | if (map == NULL) |
5ed6aba4 NC |
5548 | { |
5549 | free (sections); | |
5550 | return FALSE; | |
5551 | } | |
252b5132 RH |
5552 | |
5553 | /* Initialise the fields of the segment map. Set the physical | |
5554 | physical address to the LMA of the first section that has | |
5555 | not yet been assigned. */ | |
bc67d8a6 NC |
5556 | map->next = NULL; |
5557 | map->p_type = segment->p_type; | |
5558 | map->p_flags = segment->p_flags; | |
5559 | map->p_flags_valid = 1; | |
5560 | map->p_paddr = suggested_lma; | |
5561 | map->p_paddr_valid = 1; | |
5562 | map->includes_filehdr = 0; | |
5563 | map->includes_phdrs = 0; | |
252b5132 RH |
5564 | } |
5565 | } | |
bc67d8a6 | 5566 | while (isec < section_count); |
252b5132 RH |
5567 | |
5568 | free (sections); | |
5569 | } | |
5570 | ||
5571 | /* The Solaris linker creates program headers in which all the | |
5572 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5573 | file, we get confused. Check for this case, and if we find it | |
5574 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5575 | for (map = map_first; map != NULL; map = map->next) |
5576 | if (map->p_paddr != 0) | |
252b5132 | 5577 | break; |
bc67d8a6 | 5578 | if (map == NULL) |
b5f852ea NC |
5579 | for (map = map_first; map != NULL; map = map->next) |
5580 | map->p_paddr_valid = 0; | |
252b5132 | 5581 | |
bc67d8a6 NC |
5582 | elf_tdata (obfd)->segment_map = map_first; |
5583 | ||
5584 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5585 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5586 | the offset if necessary. */ |
5587 | if (phdr_adjust_seg != NULL) | |
5588 | { | |
5589 | unsigned int count; | |
c044fabd | 5590 | |
bc67d8a6 | 5591 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5592 | count++; |
252b5132 | 5593 | |
bc67d8a6 NC |
5594 | if (count > phdr_adjust_num) |
5595 | phdr_adjust_seg->p_paddr | |
5596 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5597 | } | |
c044fabd | 5598 | |
bc67d8a6 | 5599 | #undef SEGMENT_END |
eecdbe52 | 5600 | #undef SECTION_SIZE |
bc67d8a6 NC |
5601 | #undef IS_CONTAINED_BY_VMA |
5602 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5603 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5604 | #undef IS_SOLARIS_PT_INTERP |
5605 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5606 | #undef SEGMENT_AFTER_SEGMENT | |
5607 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5608 | return TRUE; |
252b5132 RH |
5609 | } |
5610 | ||
5611 | /* Copy private section information. This copies over the entsize | |
5612 | field, and sometimes the info field. */ | |
5613 | ||
b34976b6 | 5614 | bfd_boolean |
217aa764 AM |
5615 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5616 | asection *isec, | |
5617 | bfd *obfd, | |
5618 | asection *osec) | |
252b5132 RH |
5619 | { |
5620 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5621 | ||
5622 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5623 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5624 | return TRUE; |
252b5132 | 5625 | |
252b5132 RH |
5626 | ihdr = &elf_section_data (isec)->this_hdr; |
5627 | ohdr = &elf_section_data (osec)->this_hdr; | |
5628 | ||
5629 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5630 | ||
5631 | if (ihdr->sh_type == SHT_SYMTAB | |
5632 | || ihdr->sh_type == SHT_DYNSYM | |
5633 | || ihdr->sh_type == SHT_GNU_verneed | |
5634 | || ihdr->sh_type == SHT_GNU_verdef) | |
5635 | ohdr->sh_info = ihdr->sh_info; | |
5636 | ||
9dce4196 AM |
5637 | /* Set things up for objcopy. The output SHT_GROUP section will |
5638 | have its elf_next_in_group pointing back to the input group | |
278d8f37 L |
5639 | members. Ignore linker created group section. See |
5640 | elfNN_ia64_object_p in elfxx-ia64.c. */ | |
5641 | if (elf_sec_group (isec) == NULL | |
5642 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5643 | { | |
5644 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5645 | elf_group_name (osec) = elf_group_name (isec); | |
5646 | } | |
9dce4196 | 5647 | |
68bfbfcc | 5648 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5649 | |
b34976b6 | 5650 | return TRUE; |
252b5132 RH |
5651 | } |
5652 | ||
80fccad2 BW |
5653 | /* Copy private header information. */ |
5654 | ||
5655 | bfd_boolean | |
5656 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5657 | { | |
5658 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5659 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5660 | return TRUE; | |
5661 | ||
5662 | /* Copy over private BFD data if it has not already been copied. | |
5663 | This must be done here, rather than in the copy_private_bfd_data | |
5664 | entry point, because the latter is called after the section | |
5665 | contents have been set, which means that the program headers have | |
5666 | already been worked out. */ | |
5667 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5668 | { | |
5669 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5670 | return FALSE; | |
5671 | } | |
5672 | ||
5673 | return TRUE; | |
5674 | } | |
5675 | ||
252b5132 RH |
5676 | /* Copy private symbol information. If this symbol is in a section |
5677 | which we did not map into a BFD section, try to map the section | |
5678 | index correctly. We use special macro definitions for the mapped | |
5679 | section indices; these definitions are interpreted by the | |
5680 | swap_out_syms function. */ | |
5681 | ||
9ad5cbcf AM |
5682 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5683 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5684 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5685 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5686 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5687 | |
b34976b6 | 5688 | bfd_boolean |
217aa764 AM |
5689 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5690 | asymbol *isymarg, | |
5691 | bfd *obfd, | |
5692 | asymbol *osymarg) | |
252b5132 RH |
5693 | { |
5694 | elf_symbol_type *isym, *osym; | |
5695 | ||
5696 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5697 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5698 | return TRUE; |
252b5132 RH |
5699 | |
5700 | isym = elf_symbol_from (ibfd, isymarg); | |
5701 | osym = elf_symbol_from (obfd, osymarg); | |
5702 | ||
5703 | if (isym != NULL | |
5704 | && osym != NULL | |
5705 | && bfd_is_abs_section (isym->symbol.section)) | |
5706 | { | |
5707 | unsigned int shndx; | |
5708 | ||
5709 | shndx = isym->internal_elf_sym.st_shndx; | |
5710 | if (shndx == elf_onesymtab (ibfd)) | |
5711 | shndx = MAP_ONESYMTAB; | |
5712 | else if (shndx == elf_dynsymtab (ibfd)) | |
5713 | shndx = MAP_DYNSYMTAB; | |
5714 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5715 | shndx = MAP_STRTAB; | |
5716 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5717 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5718 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5719 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5720 | osym->internal_elf_sym.st_shndx = shndx; |
5721 | } | |
5722 | ||
b34976b6 | 5723 | return TRUE; |
252b5132 RH |
5724 | } |
5725 | ||
5726 | /* Swap out the symbols. */ | |
5727 | ||
b34976b6 | 5728 | static bfd_boolean |
217aa764 AM |
5729 | swap_out_syms (bfd *abfd, |
5730 | struct bfd_strtab_hash **sttp, | |
5731 | int relocatable_p) | |
252b5132 | 5732 | { |
9c5bfbb7 | 5733 | const struct elf_backend_data *bed; |
079e9a2f AM |
5734 | int symcount; |
5735 | asymbol **syms; | |
5736 | struct bfd_strtab_hash *stt; | |
5737 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5738 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5739 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5740 | bfd_byte *outbound_syms; |
5741 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5742 | int idx; |
5743 | bfd_size_type amt; | |
174fd7f9 | 5744 | bfd_boolean name_local_sections; |
252b5132 RH |
5745 | |
5746 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5747 | return FALSE; |
252b5132 | 5748 | |
c044fabd | 5749 | /* Dump out the symtabs. */ |
079e9a2f AM |
5750 | stt = _bfd_elf_stringtab_init (); |
5751 | if (stt == NULL) | |
b34976b6 | 5752 | return FALSE; |
252b5132 | 5753 | |
079e9a2f AM |
5754 | bed = get_elf_backend_data (abfd); |
5755 | symcount = bfd_get_symcount (abfd); | |
5756 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5757 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5758 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5759 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5760 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5761 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5762 | |
5763 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5764 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5765 | ||
5766 | amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; | |
5767 | outbound_syms = bfd_alloc (abfd, amt); | |
5768 | if (outbound_syms == NULL) | |
5ed6aba4 NC |
5769 | { |
5770 | _bfd_stringtab_free (stt); | |
5771 | return FALSE; | |
5772 | } | |
217aa764 | 5773 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5774 | |
9ad5cbcf AM |
5775 | outbound_shndx = NULL; |
5776 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5777 | if (symtab_shndx_hdr->sh_name != 0) | |
5778 | { | |
5779 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
1126897b | 5780 | outbound_shndx = bfd_zalloc (abfd, amt); |
9ad5cbcf | 5781 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5782 | { |
5783 | _bfd_stringtab_free (stt); | |
5784 | return FALSE; | |
5785 | } | |
5786 | ||
9ad5cbcf AM |
5787 | symtab_shndx_hdr->contents = outbound_shndx; |
5788 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5789 | symtab_shndx_hdr->sh_size = amt; | |
5790 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5791 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5792 | } | |
5793 | ||
589e6347 | 5794 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5795 | { |
5796 | /* Fill in zeroth symbol and swap it out. */ | |
5797 | Elf_Internal_Sym sym; | |
5798 | sym.st_name = 0; | |
5799 | sym.st_value = 0; | |
5800 | sym.st_size = 0; | |
5801 | sym.st_info = 0; | |
5802 | sym.st_other = 0; | |
5803 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5804 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5805 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5806 | if (outbound_shndx != NULL) |
5807 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5808 | } |
252b5132 | 5809 | |
174fd7f9 RS |
5810 | name_local_sections |
5811 | = (bed->elf_backend_name_local_section_symbols | |
5812 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5813 | ||
079e9a2f AM |
5814 | syms = bfd_get_outsymbols (abfd); |
5815 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5816 | { |
252b5132 | 5817 | Elf_Internal_Sym sym; |
079e9a2f AM |
5818 | bfd_vma value = syms[idx]->value; |
5819 | elf_symbol_type *type_ptr; | |
5820 | flagword flags = syms[idx]->flags; | |
5821 | int type; | |
252b5132 | 5822 | |
174fd7f9 RS |
5823 | if (!name_local_sections |
5824 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5825 | { |
5826 | /* Local section symbols have no name. */ | |
5827 | sym.st_name = 0; | |
5828 | } | |
5829 | else | |
5830 | { | |
5831 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5832 | syms[idx]->name, | |
b34976b6 | 5833 | TRUE, FALSE); |
079e9a2f | 5834 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5835 | { |
5836 | _bfd_stringtab_free (stt); | |
5837 | return FALSE; | |
5838 | } | |
079e9a2f | 5839 | } |
252b5132 | 5840 | |
079e9a2f | 5841 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5842 | |
079e9a2f AM |
5843 | if ((flags & BSF_SECTION_SYM) == 0 |
5844 | && bfd_is_com_section (syms[idx]->section)) | |
5845 | { | |
5846 | /* ELF common symbols put the alignment into the `value' field, | |
5847 | and the size into the `size' field. This is backwards from | |
5848 | how BFD handles it, so reverse it here. */ | |
5849 | sym.st_size = value; | |
5850 | if (type_ptr == NULL | |
5851 | || type_ptr->internal_elf_sym.st_value == 0) | |
5852 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5853 | else | |
5854 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5855 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5856 | (abfd, syms[idx]->section); | |
5857 | } | |
5858 | else | |
5859 | { | |
5860 | asection *sec = syms[idx]->section; | |
5861 | int shndx; | |
252b5132 | 5862 | |
079e9a2f AM |
5863 | if (sec->output_section) |
5864 | { | |
5865 | value += sec->output_offset; | |
5866 | sec = sec->output_section; | |
5867 | } | |
589e6347 | 5868 | |
079e9a2f AM |
5869 | /* Don't add in the section vma for relocatable output. */ |
5870 | if (! relocatable_p) | |
5871 | value += sec->vma; | |
5872 | sym.st_value = value; | |
5873 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5874 | ||
5875 | if (bfd_is_abs_section (sec) | |
5876 | && type_ptr != NULL | |
5877 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5878 | { | |
5879 | /* This symbol is in a real ELF section which we did | |
5880 | not create as a BFD section. Undo the mapping done | |
5881 | by copy_private_symbol_data. */ | |
5882 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5883 | switch (shndx) | |
5884 | { | |
5885 | case MAP_ONESYMTAB: | |
5886 | shndx = elf_onesymtab (abfd); | |
5887 | break; | |
5888 | case MAP_DYNSYMTAB: | |
5889 | shndx = elf_dynsymtab (abfd); | |
5890 | break; | |
5891 | case MAP_STRTAB: | |
5892 | shndx = elf_tdata (abfd)->strtab_section; | |
5893 | break; | |
5894 | case MAP_SHSTRTAB: | |
5895 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5896 | break; | |
9ad5cbcf AM |
5897 | case MAP_SYM_SHNDX: |
5898 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5899 | break; | |
079e9a2f AM |
5900 | default: |
5901 | break; | |
5902 | } | |
5903 | } | |
5904 | else | |
5905 | { | |
5906 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5907 | |
079e9a2f AM |
5908 | if (shndx == -1) |
5909 | { | |
5910 | asection *sec2; | |
5911 | ||
5912 | /* Writing this would be a hell of a lot easier if | |
5913 | we had some decent documentation on bfd, and | |
5914 | knew what to expect of the library, and what to | |
5915 | demand of applications. For example, it | |
5916 | appears that `objcopy' might not set the | |
5917 | section of a symbol to be a section that is | |
5918 | actually in the output file. */ | |
5919 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5920 | if (sec2 == NULL) |
5921 | { | |
5922 | _bfd_error_handler (_("\ | |
5923 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5924 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5925 | sec->name); | |
811072d8 | 5926 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5927 | _bfd_stringtab_free (stt); |
589e6347 NC |
5928 | return FALSE; |
5929 | } | |
811072d8 | 5930 | |
079e9a2f AM |
5931 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5932 | BFD_ASSERT (shndx != -1); | |
5933 | } | |
5934 | } | |
252b5132 | 5935 | |
079e9a2f AM |
5936 | sym.st_shndx = shndx; |
5937 | } | |
252b5132 | 5938 | |
13ae64f3 JJ |
5939 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5940 | type = STT_TLS; | |
5941 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5942 | type = STT_FUNC; |
5943 | else if ((flags & BSF_OBJECT) != 0) | |
5944 | type = STT_OBJECT; | |
5945 | else | |
5946 | type = STT_NOTYPE; | |
252b5132 | 5947 | |
13ae64f3 JJ |
5948 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5949 | type = STT_TLS; | |
5950 | ||
589e6347 | 5951 | /* Processor-specific types. */ |
079e9a2f AM |
5952 | if (type_ptr != NULL |
5953 | && bed->elf_backend_get_symbol_type) | |
5954 | type = ((*bed->elf_backend_get_symbol_type) | |
5955 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5956 | |
079e9a2f AM |
5957 | if (flags & BSF_SECTION_SYM) |
5958 | { | |
5959 | if (flags & BSF_GLOBAL) | |
5960 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5961 | else | |
5962 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
5963 | } | |
5964 | else if (bfd_is_com_section (syms[idx]->section)) | |
5965 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
5966 | else if (bfd_is_und_section (syms[idx]->section)) | |
5967 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
5968 | ? STB_WEAK | |
5969 | : STB_GLOBAL), | |
5970 | type); | |
5971 | else if (flags & BSF_FILE) | |
5972 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
5973 | else | |
5974 | { | |
5975 | int bind = STB_LOCAL; | |
252b5132 | 5976 | |
079e9a2f AM |
5977 | if (flags & BSF_LOCAL) |
5978 | bind = STB_LOCAL; | |
5979 | else if (flags & BSF_WEAK) | |
5980 | bind = STB_WEAK; | |
5981 | else if (flags & BSF_GLOBAL) | |
5982 | bind = STB_GLOBAL; | |
252b5132 | 5983 | |
079e9a2f AM |
5984 | sym.st_info = ELF_ST_INFO (bind, type); |
5985 | } | |
252b5132 | 5986 | |
079e9a2f AM |
5987 | if (type_ptr != NULL) |
5988 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
5989 | else | |
5990 | sym.st_other = 0; | |
252b5132 | 5991 | |
9ad5cbcf | 5992 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5993 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5994 | if (outbound_shndx != NULL) |
5995 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5996 | } |
252b5132 | 5997 | |
079e9a2f AM |
5998 | *sttp = stt; |
5999 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
6000 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 6001 | |
079e9a2f AM |
6002 | symstrtab_hdr->sh_flags = 0; |
6003 | symstrtab_hdr->sh_addr = 0; | |
6004 | symstrtab_hdr->sh_entsize = 0; | |
6005 | symstrtab_hdr->sh_link = 0; | |
6006 | symstrtab_hdr->sh_info = 0; | |
6007 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 6008 | |
b34976b6 | 6009 | return TRUE; |
252b5132 RH |
6010 | } |
6011 | ||
6012 | /* Return the number of bytes required to hold the symtab vector. | |
6013 | ||
6014 | Note that we base it on the count plus 1, since we will null terminate | |
6015 | the vector allocated based on this size. However, the ELF symbol table | |
6016 | always has a dummy entry as symbol #0, so it ends up even. */ | |
6017 | ||
6018 | long | |
217aa764 | 6019 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6020 | { |
6021 | long symcount; | |
6022 | long symtab_size; | |
6023 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
6024 | ||
6025 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6026 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6027 | if (symcount > 0) | |
6028 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6029 | |
6030 | return symtab_size; | |
6031 | } | |
6032 | ||
6033 | long | |
217aa764 | 6034 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
6035 | { |
6036 | long symcount; | |
6037 | long symtab_size; | |
6038 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
6039 | ||
6040 | if (elf_dynsymtab (abfd) == 0) | |
6041 | { | |
6042 | bfd_set_error (bfd_error_invalid_operation); | |
6043 | return -1; | |
6044 | } | |
6045 | ||
6046 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
6047 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
6048 | if (symcount > 0) | |
6049 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
6050 | |
6051 | return symtab_size; | |
6052 | } | |
6053 | ||
6054 | long | |
217aa764 AM |
6055 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
6056 | sec_ptr asect) | |
252b5132 RH |
6057 | { |
6058 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
6059 | } | |
6060 | ||
6061 | /* Canonicalize the relocs. */ | |
6062 | ||
6063 | long | |
217aa764 AM |
6064 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
6065 | sec_ptr section, | |
6066 | arelent **relptr, | |
6067 | asymbol **symbols) | |
252b5132 RH |
6068 | { |
6069 | arelent *tblptr; | |
6070 | unsigned int i; | |
9c5bfbb7 | 6071 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 6072 | |
b34976b6 | 6073 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
6074 | return -1; |
6075 | ||
6076 | tblptr = section->relocation; | |
6077 | for (i = 0; i < section->reloc_count; i++) | |
6078 | *relptr++ = tblptr++; | |
6079 | ||
6080 | *relptr = NULL; | |
6081 | ||
6082 | return section->reloc_count; | |
6083 | } | |
6084 | ||
6085 | long | |
6cee3f79 | 6086 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 6087 | { |
9c5bfbb7 | 6088 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6089 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
6090 | |
6091 | if (symcount >= 0) | |
6092 | bfd_get_symcount (abfd) = symcount; | |
6093 | return symcount; | |
6094 | } | |
6095 | ||
6096 | long | |
217aa764 AM |
6097 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
6098 | asymbol **allocation) | |
252b5132 | 6099 | { |
9c5bfbb7 | 6100 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 6101 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
6102 | |
6103 | if (symcount >= 0) | |
6104 | bfd_get_dynamic_symcount (abfd) = symcount; | |
6105 | return symcount; | |
252b5132 RH |
6106 | } |
6107 | ||
8615f3f2 AM |
6108 | /* Return the size required for the dynamic reloc entries. Any loadable |
6109 | section that was actually installed in the BFD, and has type SHT_REL | |
6110 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6111 | dynamic reloc section. */ | |
252b5132 RH |
6112 | |
6113 | long | |
217aa764 | 6114 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6115 | { |
6116 | long ret; | |
6117 | asection *s; | |
6118 | ||
6119 | if (elf_dynsymtab (abfd) == 0) | |
6120 | { | |
6121 | bfd_set_error (bfd_error_invalid_operation); | |
6122 | return -1; | |
6123 | } | |
6124 | ||
6125 | ret = sizeof (arelent *); | |
6126 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6127 | if ((s->flags & SEC_LOAD) != 0 |
6128 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6129 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6130 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6131 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6132 | * sizeof (arelent *)); |
6133 | ||
6134 | return ret; | |
6135 | } | |
6136 | ||
8615f3f2 AM |
6137 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6138 | dynamic relocations as a single block, although they are actually | |
6139 | associated with particular sections; the interface, which was | |
6140 | designed for SunOS style shared libraries, expects that there is only | |
6141 | one set of dynamic relocs. Any loadable section that was actually | |
6142 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6143 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6144 | |
6145 | long | |
217aa764 AM |
6146 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6147 | arelent **storage, | |
6148 | asymbol **syms) | |
252b5132 | 6149 | { |
217aa764 | 6150 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6151 | asection *s; |
6152 | long ret; | |
6153 | ||
6154 | if (elf_dynsymtab (abfd) == 0) | |
6155 | { | |
6156 | bfd_set_error (bfd_error_invalid_operation); | |
6157 | return -1; | |
6158 | } | |
6159 | ||
6160 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6161 | ret = 0; | |
6162 | for (s = abfd->sections; s != NULL; s = s->next) | |
6163 | { | |
8615f3f2 AM |
6164 | if ((s->flags & SEC_LOAD) != 0 |
6165 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6166 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6167 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6168 | { | |
6169 | arelent *p; | |
6170 | long count, i; | |
6171 | ||
b34976b6 | 6172 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6173 | return -1; |
eea6121a | 6174 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6175 | p = s->relocation; |
6176 | for (i = 0; i < count; i++) | |
6177 | *storage++ = p++; | |
6178 | ret += count; | |
6179 | } | |
6180 | } | |
6181 | ||
6182 | *storage = NULL; | |
6183 | ||
6184 | return ret; | |
6185 | } | |
6186 | \f | |
6187 | /* Read in the version information. */ | |
6188 | ||
b34976b6 | 6189 | bfd_boolean |
fc0e6df6 | 6190 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6191 | { |
6192 | bfd_byte *contents = NULL; | |
dc810e39 | 6193 | bfd_size_type amt; |
fc0e6df6 PB |
6194 | unsigned int freeidx = 0; |
6195 | ||
6196 | if (elf_dynverref (abfd) != 0) | |
6197 | { | |
6198 | Elf_Internal_Shdr *hdr; | |
6199 | Elf_External_Verneed *everneed; | |
6200 | Elf_Internal_Verneed *iverneed; | |
6201 | unsigned int i; | |
6202 | ||
6203 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6204 | ||
6205 | amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); | |
6206 | elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); | |
6207 | if (elf_tdata (abfd)->verref == NULL) | |
6208 | goto error_return; | |
6209 | ||
6210 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6211 | ||
6212 | contents = bfd_malloc (hdr->sh_size); | |
6213 | if (contents == NULL) | |
6214 | goto error_return; | |
6215 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
6216 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
6217 | goto error_return; | |
6218 | ||
6219 | everneed = (Elf_External_Verneed *) contents; | |
6220 | iverneed = elf_tdata (abfd)->verref; | |
6221 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6222 | { | |
6223 | Elf_External_Vernaux *evernaux; | |
6224 | Elf_Internal_Vernaux *ivernaux; | |
6225 | unsigned int j; | |
6226 | ||
6227 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6228 | ||
6229 | iverneed->vn_bfd = abfd; | |
6230 | ||
6231 | iverneed->vn_filename = | |
6232 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6233 | iverneed->vn_file); | |
6234 | if (iverneed->vn_filename == NULL) | |
6235 | goto error_return; | |
6236 | ||
6237 | amt = iverneed->vn_cnt; | |
6238 | amt *= sizeof (Elf_Internal_Vernaux); | |
6239 | iverneed->vn_auxptr = bfd_alloc (abfd, amt); | |
6240 | ||
6241 | evernaux = ((Elf_External_Vernaux *) | |
6242 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6243 | ivernaux = iverneed->vn_auxptr; | |
6244 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6245 | { | |
6246 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6247 | ||
6248 | ivernaux->vna_nodename = | |
6249 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6250 | ivernaux->vna_name); | |
6251 | if (ivernaux->vna_nodename == NULL) | |
6252 | goto error_return; | |
6253 | ||
6254 | if (j + 1 < iverneed->vn_cnt) | |
6255 | ivernaux->vna_nextptr = ivernaux + 1; | |
6256 | else | |
6257 | ivernaux->vna_nextptr = NULL; | |
6258 | ||
6259 | evernaux = ((Elf_External_Vernaux *) | |
6260 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6261 | ||
6262 | if (ivernaux->vna_other > freeidx) | |
6263 | freeidx = ivernaux->vna_other; | |
6264 | } | |
6265 | ||
6266 | if (i + 1 < hdr->sh_info) | |
6267 | iverneed->vn_nextref = iverneed + 1; | |
6268 | else | |
6269 | iverneed->vn_nextref = NULL; | |
6270 | ||
6271 | everneed = ((Elf_External_Verneed *) | |
6272 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6273 | } | |
6274 | ||
6275 | free (contents); | |
6276 | contents = NULL; | |
6277 | } | |
252b5132 RH |
6278 | |
6279 | if (elf_dynverdef (abfd) != 0) | |
6280 | { | |
6281 | Elf_Internal_Shdr *hdr; | |
6282 | Elf_External_Verdef *everdef; | |
6283 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6284 | Elf_Internal_Verdef *iverdefarr; |
6285 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6286 | unsigned int i; |
062e2358 | 6287 | unsigned int maxidx; |
252b5132 RH |
6288 | |
6289 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6290 | ||
217aa764 | 6291 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6292 | if (contents == NULL) |
6293 | goto error_return; | |
6294 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6295 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6296 | goto error_return; |
6297 | ||
f631889e UD |
6298 | /* We know the number of entries in the section but not the maximum |
6299 | index. Therefore we have to run through all entries and find | |
6300 | the maximum. */ | |
252b5132 | 6301 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6302 | maxidx = 0; |
6303 | for (i = 0; i < hdr->sh_info; ++i) | |
6304 | { | |
6305 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6306 | ||
062e2358 AM |
6307 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6308 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e UD |
6309 | |
6310 | everdef = ((Elf_External_Verdef *) | |
6311 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6312 | } | |
6313 | ||
fc0e6df6 PB |
6314 | if (default_imported_symver) |
6315 | { | |
6316 | if (freeidx > maxidx) | |
6317 | maxidx = ++freeidx; | |
6318 | else | |
6319 | freeidx = ++maxidx; | |
6320 | } | |
dc810e39 | 6321 | amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); |
217aa764 | 6322 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); |
f631889e UD |
6323 | if (elf_tdata (abfd)->verdef == NULL) |
6324 | goto error_return; | |
6325 | ||
6326 | elf_tdata (abfd)->cverdefs = maxidx; | |
6327 | ||
6328 | everdef = (Elf_External_Verdef *) contents; | |
6329 | iverdefarr = elf_tdata (abfd)->verdef; | |
6330 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6331 | { |
6332 | Elf_External_Verdaux *everdaux; | |
6333 | Elf_Internal_Verdaux *iverdaux; | |
6334 | unsigned int j; | |
6335 | ||
f631889e UD |
6336 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6337 | ||
6338 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; | |
6339 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6340 | |
6341 | iverdef->vd_bfd = abfd; | |
6342 | ||
dc810e39 | 6343 | amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); |
217aa764 | 6344 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
6345 | if (iverdef->vd_auxptr == NULL) |
6346 | goto error_return; | |
6347 | ||
6348 | everdaux = ((Elf_External_Verdaux *) | |
6349 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6350 | iverdaux = iverdef->vd_auxptr; | |
6351 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6352 | { | |
6353 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6354 | ||
6355 | iverdaux->vda_nodename = | |
6356 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6357 | iverdaux->vda_name); | |
6358 | if (iverdaux->vda_nodename == NULL) | |
6359 | goto error_return; | |
6360 | ||
6361 | if (j + 1 < iverdef->vd_cnt) | |
6362 | iverdaux->vda_nextptr = iverdaux + 1; | |
6363 | else | |
6364 | iverdaux->vda_nextptr = NULL; | |
6365 | ||
6366 | everdaux = ((Elf_External_Verdaux *) | |
6367 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6368 | } | |
6369 | ||
6370 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
6371 | ||
6372 | if (i + 1 < hdr->sh_info) | |
6373 | iverdef->vd_nextdef = iverdef + 1; | |
6374 | else | |
6375 | iverdef->vd_nextdef = NULL; | |
6376 | ||
6377 | everdef = ((Elf_External_Verdef *) | |
6378 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6379 | } | |
6380 | ||
6381 | free (contents); | |
6382 | contents = NULL; | |
6383 | } | |
fc0e6df6 | 6384 | else if (default_imported_symver) |
252b5132 | 6385 | { |
fc0e6df6 PB |
6386 | if (freeidx < 3) |
6387 | freeidx = 3; | |
6388 | else | |
6389 | freeidx++; | |
252b5132 | 6390 | |
fc0e6df6 PB |
6391 | amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef); |
6392 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); | |
6393 | if (elf_tdata (abfd)->verdef == NULL) | |
252b5132 RH |
6394 | goto error_return; |
6395 | ||
fc0e6df6 PB |
6396 | elf_tdata (abfd)->cverdefs = freeidx; |
6397 | } | |
252b5132 | 6398 | |
fc0e6df6 PB |
6399 | /* Create a default version based on the soname. */ |
6400 | if (default_imported_symver) | |
6401 | { | |
6402 | Elf_Internal_Verdef *iverdef; | |
6403 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6404 | |
fc0e6df6 | 6405 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6406 | |
fc0e6df6 PB |
6407 | iverdef->vd_version = VER_DEF_CURRENT; |
6408 | iverdef->vd_flags = 0; | |
6409 | iverdef->vd_ndx = freeidx; | |
6410 | iverdef->vd_cnt = 1; | |
252b5132 | 6411 | |
fc0e6df6 | 6412 | iverdef->vd_bfd = abfd; |
252b5132 | 6413 | |
fc0e6df6 PB |
6414 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6415 | if (iverdef->vd_nodename == NULL) | |
6416 | goto error_return; | |
6417 | iverdef->vd_nextdef = NULL; | |
6418 | amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux); | |
6419 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); | |
252b5132 | 6420 | |
fc0e6df6 PB |
6421 | iverdaux = iverdef->vd_auxptr; |
6422 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6423 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6424 | } |
6425 | ||
b34976b6 | 6426 | return TRUE; |
252b5132 RH |
6427 | |
6428 | error_return: | |
5ed6aba4 | 6429 | if (contents != NULL) |
252b5132 | 6430 | free (contents); |
b34976b6 | 6431 | return FALSE; |
252b5132 RH |
6432 | } |
6433 | \f | |
6434 | asymbol * | |
217aa764 | 6435 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6436 | { |
6437 | elf_symbol_type *newsym; | |
dc810e39 | 6438 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6439 | |
217aa764 | 6440 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6441 | if (!newsym) |
6442 | return NULL; | |
6443 | else | |
6444 | { | |
6445 | newsym->symbol.the_bfd = abfd; | |
6446 | return &newsym->symbol; | |
6447 | } | |
6448 | } | |
6449 | ||
6450 | void | |
217aa764 AM |
6451 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6452 | asymbol *symbol, | |
6453 | symbol_info *ret) | |
252b5132 RH |
6454 | { |
6455 | bfd_symbol_info (symbol, ret); | |
6456 | } | |
6457 | ||
6458 | /* Return whether a symbol name implies a local symbol. Most targets | |
6459 | use this function for the is_local_label_name entry point, but some | |
6460 | override it. */ | |
6461 | ||
b34976b6 | 6462 | bfd_boolean |
217aa764 AM |
6463 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6464 | const char *name) | |
252b5132 RH |
6465 | { |
6466 | /* Normal local symbols start with ``.L''. */ | |
6467 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6468 | return TRUE; |
252b5132 RH |
6469 | |
6470 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6471 | DWARF debugging symbols starting with ``..''. */ | |
6472 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6473 | return TRUE; |
252b5132 RH |
6474 | |
6475 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6476 | emitting DWARF debugging output. I suspect this is actually a | |
6477 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6478 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6479 | underscore to be emitted on some ELF targets). For ease of use, | |
6480 | we treat such symbols as local. */ | |
6481 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6482 | return TRUE; |
252b5132 | 6483 | |
b34976b6 | 6484 | return FALSE; |
252b5132 RH |
6485 | } |
6486 | ||
6487 | alent * | |
217aa764 AM |
6488 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6489 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6490 | { |
6491 | abort (); | |
6492 | return NULL; | |
6493 | } | |
6494 | ||
b34976b6 | 6495 | bfd_boolean |
217aa764 AM |
6496 | _bfd_elf_set_arch_mach (bfd *abfd, |
6497 | enum bfd_architecture arch, | |
6498 | unsigned long machine) | |
252b5132 RH |
6499 | { |
6500 | /* If this isn't the right architecture for this backend, and this | |
6501 | isn't the generic backend, fail. */ | |
6502 | if (arch != get_elf_backend_data (abfd)->arch | |
6503 | && arch != bfd_arch_unknown | |
6504 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6505 | return FALSE; |
252b5132 RH |
6506 | |
6507 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6508 | } | |
6509 | ||
d1fad7c6 NC |
6510 | /* Find the function to a particular section and offset, |
6511 | for error reporting. */ | |
252b5132 | 6512 | |
b34976b6 | 6513 | static bfd_boolean |
217aa764 AM |
6514 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6515 | asection *section, | |
6516 | asymbol **symbols, | |
6517 | bfd_vma offset, | |
6518 | const char **filename_ptr, | |
6519 | const char **functionname_ptr) | |
252b5132 | 6520 | { |
252b5132 | 6521 | const char *filename; |
57426232 | 6522 | asymbol *func, *file; |
252b5132 RH |
6523 | bfd_vma low_func; |
6524 | asymbol **p; | |
57426232 JB |
6525 | /* ??? Given multiple file symbols, it is impossible to reliably |
6526 | choose the right file name for global symbols. File symbols are | |
6527 | local symbols, and thus all file symbols must sort before any | |
6528 | global symbols. The ELF spec may be interpreted to say that a | |
6529 | file symbol must sort before other local symbols, but currently | |
6530 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6531 | make a better choice of file name for local symbols by ignoring | |
6532 | file symbols appearing after a given local symbol. */ | |
6533 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6534 | |
252b5132 RH |
6535 | filename = NULL; |
6536 | func = NULL; | |
57426232 | 6537 | file = NULL; |
252b5132 | 6538 | low_func = 0; |
57426232 | 6539 | state = nothing_seen; |
252b5132 RH |
6540 | |
6541 | for (p = symbols; *p != NULL; p++) | |
6542 | { | |
6543 | elf_symbol_type *q; | |
6544 | ||
6545 | q = (elf_symbol_type *) *p; | |
6546 | ||
252b5132 RH |
6547 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6548 | { | |
6549 | default: | |
6550 | break; | |
6551 | case STT_FILE: | |
57426232 JB |
6552 | file = &q->symbol; |
6553 | if (state == symbol_seen) | |
6554 | state = file_after_symbol_seen; | |
6555 | continue; | |
6556 | case STT_SECTION: | |
6557 | continue; | |
252b5132 RH |
6558 | case STT_NOTYPE: |
6559 | case STT_FUNC: | |
6b40fcba | 6560 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6561 | && q->symbol.value >= low_func |
6562 | && q->symbol.value <= offset) | |
6563 | { | |
6564 | func = (asymbol *) q; | |
6565 | low_func = q->symbol.value; | |
57426232 JB |
6566 | if (file == NULL) |
6567 | filename = NULL; | |
6568 | else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL | |
6569 | && state == file_after_symbol_seen) | |
6570 | filename = NULL; | |
6571 | else | |
6572 | filename = bfd_asymbol_name (file); | |
252b5132 RH |
6573 | } |
6574 | break; | |
6575 | } | |
57426232 JB |
6576 | if (state == nothing_seen) |
6577 | state = symbol_seen; | |
252b5132 RH |
6578 | } |
6579 | ||
6580 | if (func == NULL) | |
b34976b6 | 6581 | return FALSE; |
252b5132 | 6582 | |
d1fad7c6 NC |
6583 | if (filename_ptr) |
6584 | *filename_ptr = filename; | |
6585 | if (functionname_ptr) | |
6586 | *functionname_ptr = bfd_asymbol_name (func); | |
6587 | ||
b34976b6 | 6588 | return TRUE; |
d1fad7c6 NC |
6589 | } |
6590 | ||
6591 | /* Find the nearest line to a particular section and offset, | |
6592 | for error reporting. */ | |
6593 | ||
b34976b6 | 6594 | bfd_boolean |
217aa764 AM |
6595 | _bfd_elf_find_nearest_line (bfd *abfd, |
6596 | asection *section, | |
6597 | asymbol **symbols, | |
6598 | bfd_vma offset, | |
6599 | const char **filename_ptr, | |
6600 | const char **functionname_ptr, | |
6601 | unsigned int *line_ptr) | |
d1fad7c6 | 6602 | { |
b34976b6 | 6603 | bfd_boolean found; |
d1fad7c6 NC |
6604 | |
6605 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6606 | filename_ptr, functionname_ptr, |
6607 | line_ptr)) | |
d1fad7c6 NC |
6608 | { |
6609 | if (!*functionname_ptr) | |
4e8a9624 AM |
6610 | elf_find_function (abfd, section, symbols, offset, |
6611 | *filename_ptr ? NULL : filename_ptr, | |
6612 | functionname_ptr); | |
6613 | ||
b34976b6 | 6614 | return TRUE; |
d1fad7c6 NC |
6615 | } |
6616 | ||
6617 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6618 | filename_ptr, functionname_ptr, |
6619 | line_ptr, 0, | |
6620 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6621 | { |
6622 | if (!*functionname_ptr) | |
4e8a9624 AM |
6623 | elf_find_function (abfd, section, symbols, offset, |
6624 | *filename_ptr ? NULL : filename_ptr, | |
6625 | functionname_ptr); | |
6626 | ||
b34976b6 | 6627 | return TRUE; |
d1fad7c6 NC |
6628 | } |
6629 | ||
6630 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6631 | &found, filename_ptr, |
6632 | functionname_ptr, line_ptr, | |
6633 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6634 | return FALSE; |
dc43ada5 | 6635 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6636 | return TRUE; |
d1fad7c6 NC |
6637 | |
6638 | if (symbols == NULL) | |
b34976b6 | 6639 | return FALSE; |
d1fad7c6 NC |
6640 | |
6641 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6642 | filename_ptr, functionname_ptr)) |
b34976b6 | 6643 | return FALSE; |
d1fad7c6 | 6644 | |
252b5132 | 6645 | *line_ptr = 0; |
b34976b6 | 6646 | return TRUE; |
252b5132 RH |
6647 | } |
6648 | ||
6649 | int | |
217aa764 | 6650 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6651 | { |
6652 | int ret; | |
6653 | ||
6654 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6655 | if (! reloc) | |
6656 | ret += get_program_header_size (abfd); | |
6657 | return ret; | |
6658 | } | |
6659 | ||
b34976b6 | 6660 | bfd_boolean |
217aa764 AM |
6661 | _bfd_elf_set_section_contents (bfd *abfd, |
6662 | sec_ptr section, | |
0f867abe | 6663 | const void *location, |
217aa764 AM |
6664 | file_ptr offset, |
6665 | bfd_size_type count) | |
252b5132 RH |
6666 | { |
6667 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6668 | bfd_signed_vma pos; |
252b5132 RH |
6669 | |
6670 | if (! abfd->output_has_begun | |
217aa764 | 6671 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6672 | return FALSE; |
252b5132 RH |
6673 | |
6674 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6675 | pos = hdr->sh_offset + offset; |
6676 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6677 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6678 | return FALSE; |
252b5132 | 6679 | |
b34976b6 | 6680 | return TRUE; |
252b5132 RH |
6681 | } |
6682 | ||
6683 | void | |
217aa764 AM |
6684 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6685 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6686 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6687 | { |
6688 | abort (); | |
6689 | } | |
6690 | ||
252b5132 RH |
6691 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6692 | ||
b34976b6 | 6693 | bfd_boolean |
217aa764 | 6694 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6695 | { |
c044fabd | 6696 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6697 | |
6698 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6699 | { | |
6700 | bfd_reloc_code_real_type code; | |
6701 | reloc_howto_type *howto; | |
6702 | ||
6703 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6704 | equivalent ELF reloc. */ |
252b5132 RH |
6705 | |
6706 | if (areloc->howto->pc_relative) | |
6707 | { | |
6708 | switch (areloc->howto->bitsize) | |
6709 | { | |
6710 | case 8: | |
6711 | code = BFD_RELOC_8_PCREL; | |
6712 | break; | |
6713 | case 12: | |
6714 | code = BFD_RELOC_12_PCREL; | |
6715 | break; | |
6716 | case 16: | |
6717 | code = BFD_RELOC_16_PCREL; | |
6718 | break; | |
6719 | case 24: | |
6720 | code = BFD_RELOC_24_PCREL; | |
6721 | break; | |
6722 | case 32: | |
6723 | code = BFD_RELOC_32_PCREL; | |
6724 | break; | |
6725 | case 64: | |
6726 | code = BFD_RELOC_64_PCREL; | |
6727 | break; | |
6728 | default: | |
6729 | goto fail; | |
6730 | } | |
6731 | ||
6732 | howto = bfd_reloc_type_lookup (abfd, code); | |
6733 | ||
6734 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6735 | { | |
6736 | if (howto->pcrel_offset) | |
6737 | areloc->addend += areloc->address; | |
6738 | else | |
6739 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6740 | } | |
6741 | } | |
6742 | else | |
6743 | { | |
6744 | switch (areloc->howto->bitsize) | |
6745 | { | |
6746 | case 8: | |
6747 | code = BFD_RELOC_8; | |
6748 | break; | |
6749 | case 14: | |
6750 | code = BFD_RELOC_14; | |
6751 | break; | |
6752 | case 16: | |
6753 | code = BFD_RELOC_16; | |
6754 | break; | |
6755 | case 26: | |
6756 | code = BFD_RELOC_26; | |
6757 | break; | |
6758 | case 32: | |
6759 | code = BFD_RELOC_32; | |
6760 | break; | |
6761 | case 64: | |
6762 | code = BFD_RELOC_64; | |
6763 | break; | |
6764 | default: | |
6765 | goto fail; | |
6766 | } | |
6767 | ||
6768 | howto = bfd_reloc_type_lookup (abfd, code); | |
6769 | } | |
6770 | ||
6771 | if (howto) | |
6772 | areloc->howto = howto; | |
6773 | else | |
6774 | goto fail; | |
6775 | } | |
6776 | ||
b34976b6 | 6777 | return TRUE; |
252b5132 RH |
6778 | |
6779 | fail: | |
6780 | (*_bfd_error_handler) | |
d003868e AM |
6781 | (_("%B: unsupported relocation type %s"), |
6782 | abfd, areloc->howto->name); | |
252b5132 | 6783 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6784 | return FALSE; |
252b5132 RH |
6785 | } |
6786 | ||
b34976b6 | 6787 | bfd_boolean |
217aa764 | 6788 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6789 | { |
6790 | if (bfd_get_format (abfd) == bfd_object) | |
6791 | { | |
6792 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6793 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
6f140a15 | 6794 | _bfd_dwarf2_cleanup_debug_info (abfd); |
252b5132 RH |
6795 | } |
6796 | ||
6797 | return _bfd_generic_close_and_cleanup (abfd); | |
6798 | } | |
6799 | ||
6800 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6801 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6802 | range-checking to interfere. There is nothing else to do in processing | |
6803 | this reloc. */ | |
6804 | ||
6805 | bfd_reloc_status_type | |
217aa764 AM |
6806 | _bfd_elf_rel_vtable_reloc_fn |
6807 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6808 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6809 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6810 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6811 | { |
6812 | return bfd_reloc_ok; | |
6813 | } | |
252b5132 RH |
6814 | \f |
6815 | /* Elf core file support. Much of this only works on native | |
6816 | toolchains, since we rely on knowing the | |
6817 | machine-dependent procfs structure in order to pick | |
c044fabd | 6818 | out details about the corefile. */ |
252b5132 RH |
6819 | |
6820 | #ifdef HAVE_SYS_PROCFS_H | |
6821 | # include <sys/procfs.h> | |
6822 | #endif | |
6823 | ||
c044fabd | 6824 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6825 | |
6826 | static int | |
217aa764 | 6827 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6828 | { |
6829 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6830 | + (elf_tdata (abfd)->core_pid)); | |
6831 | } | |
6832 | ||
252b5132 RH |
6833 | /* If there isn't a section called NAME, make one, using |
6834 | data from SECT. Note, this function will generate a | |
6835 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6836 | overwrite it. */ |
252b5132 | 6837 | |
b34976b6 | 6838 | static bfd_boolean |
217aa764 | 6839 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6840 | { |
c044fabd | 6841 | asection *sect2; |
252b5132 RH |
6842 | |
6843 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6844 | return TRUE; |
252b5132 RH |
6845 | |
6846 | sect2 = bfd_make_section (abfd, name); | |
6847 | if (sect2 == NULL) | |
b34976b6 | 6848 | return FALSE; |
252b5132 | 6849 | |
eea6121a | 6850 | sect2->size = sect->size; |
252b5132 RH |
6851 | sect2->filepos = sect->filepos; |
6852 | sect2->flags = sect->flags; | |
6853 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6854 | return TRUE; |
252b5132 RH |
6855 | } |
6856 | ||
bb0082d6 AM |
6857 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6858 | actually creates up to two pseudosections: | |
6859 | - For the single-threaded case, a section named NAME, unless | |
6860 | such a section already exists. | |
6861 | - For the multi-threaded case, a section named "NAME/PID", where | |
6862 | PID is elfcore_make_pid (abfd). | |
6863 | Both pseudosections have identical contents. */ | |
b34976b6 | 6864 | bfd_boolean |
217aa764 AM |
6865 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6866 | char *name, | |
6867 | size_t size, | |
6868 | ufile_ptr filepos) | |
bb0082d6 AM |
6869 | { |
6870 | char buf[100]; | |
6871 | char *threaded_name; | |
d4c88bbb | 6872 | size_t len; |
bb0082d6 AM |
6873 | asection *sect; |
6874 | ||
6875 | /* Build the section name. */ | |
6876 | ||
6877 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 6878 | len = strlen (buf) + 1; |
217aa764 | 6879 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 6880 | if (threaded_name == NULL) |
b34976b6 | 6881 | return FALSE; |
d4c88bbb | 6882 | memcpy (threaded_name, buf, len); |
bb0082d6 | 6883 | |
62f3bb11 | 6884 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 6885 | if (sect == NULL) |
b34976b6 | 6886 | return FALSE; |
eea6121a | 6887 | sect->size = size; |
bb0082d6 AM |
6888 | sect->filepos = filepos; |
6889 | sect->flags = SEC_HAS_CONTENTS; | |
6890 | sect->alignment_power = 2; | |
6891 | ||
936e320b | 6892 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
6893 | } |
6894 | ||
252b5132 | 6895 | /* prstatus_t exists on: |
4a938328 | 6896 | solaris 2.5+ |
252b5132 RH |
6897 | linux 2.[01] + glibc |
6898 | unixware 4.2 | |
6899 | */ | |
6900 | ||
6901 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 6902 | |
b34976b6 | 6903 | static bfd_boolean |
217aa764 | 6904 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6905 | { |
eea6121a | 6906 | size_t size; |
7ee38065 | 6907 | int offset; |
252b5132 | 6908 | |
4a938328 MS |
6909 | if (note->descsz == sizeof (prstatus_t)) |
6910 | { | |
6911 | prstatus_t prstat; | |
252b5132 | 6912 | |
eea6121a | 6913 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6914 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 6915 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 6916 | |
fa49d224 NC |
6917 | /* Do not overwrite the core signal if it |
6918 | has already been set by another thread. */ | |
6919 | if (elf_tdata (abfd)->core_signal == 0) | |
6920 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 6921 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 6922 | |
4a938328 MS |
6923 | /* pr_who exists on: |
6924 | solaris 2.5+ | |
6925 | unixware 4.2 | |
6926 | pr_who doesn't exist on: | |
6927 | linux 2.[01] | |
6928 | */ | |
252b5132 | 6929 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 6930 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 6931 | #endif |
4a938328 | 6932 | } |
7ee38065 | 6933 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
6934 | else if (note->descsz == sizeof (prstatus32_t)) |
6935 | { | |
6936 | /* 64-bit host, 32-bit corefile */ | |
6937 | prstatus32_t prstat; | |
6938 | ||
eea6121a | 6939 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6940 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
6941 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
6942 | ||
fa49d224 NC |
6943 | /* Do not overwrite the core signal if it |
6944 | has already been set by another thread. */ | |
6945 | if (elf_tdata (abfd)->core_signal == 0) | |
6946 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
6947 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
6948 | ||
6949 | /* pr_who exists on: | |
6950 | solaris 2.5+ | |
6951 | unixware 4.2 | |
6952 | pr_who doesn't exist on: | |
6953 | linux 2.[01] | |
6954 | */ | |
7ee38065 | 6955 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
6956 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
6957 | #endif | |
6958 | } | |
7ee38065 | 6959 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
6960 | else |
6961 | { | |
6962 | /* Fail - we don't know how to handle any other | |
6963 | note size (ie. data object type). */ | |
b34976b6 | 6964 | return TRUE; |
4a938328 | 6965 | } |
252b5132 | 6966 | |
bb0082d6 | 6967 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 6968 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 6969 | size, note->descpos + offset); |
252b5132 RH |
6970 | } |
6971 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
6972 | ||
bb0082d6 | 6973 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 6974 | static bfd_boolean |
217aa764 AM |
6975 | elfcore_make_note_pseudosection (bfd *abfd, |
6976 | char *name, | |
6977 | Elf_Internal_Note *note) | |
252b5132 | 6978 | { |
936e320b AM |
6979 | return _bfd_elfcore_make_pseudosection (abfd, name, |
6980 | note->descsz, note->descpos); | |
252b5132 RH |
6981 | } |
6982 | ||
ff08c6bb JB |
6983 | /* There isn't a consistent prfpregset_t across platforms, |
6984 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
6985 | data structure apart. */ |
6986 | ||
b34976b6 | 6987 | static bfd_boolean |
217aa764 | 6988 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6989 | { |
6990 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
6991 | } | |
6992 | ||
ff08c6bb JB |
6993 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
6994 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
6995 | literally. */ | |
c044fabd | 6996 | |
b34976b6 | 6997 | static bfd_boolean |
217aa764 | 6998 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6999 | { |
7000 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
7001 | } | |
7002 | ||
252b5132 | 7003 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 7004 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 7005 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7006 | typedef prpsinfo32_t elfcore_psinfo32_t; |
7007 | #endif | |
252b5132 RH |
7008 | #endif |
7009 | ||
7010 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 7011 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 7012 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
7013 | typedef psinfo32_t elfcore_psinfo32_t; |
7014 | #endif | |
252b5132 RH |
7015 | #endif |
7016 | ||
252b5132 RH |
7017 | /* return a malloc'ed copy of a string at START which is at |
7018 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 7019 | the copy will always have a terminating '\0'. */ |
252b5132 | 7020 | |
936e320b | 7021 | char * |
217aa764 | 7022 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 7023 | { |
dc810e39 | 7024 | char *dups; |
c044fabd | 7025 | char *end = memchr (start, '\0', max); |
dc810e39 | 7026 | size_t len; |
252b5132 RH |
7027 | |
7028 | if (end == NULL) | |
7029 | len = max; | |
7030 | else | |
7031 | len = end - start; | |
7032 | ||
217aa764 | 7033 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 7034 | if (dups == NULL) |
252b5132 RH |
7035 | return NULL; |
7036 | ||
dc810e39 AM |
7037 | memcpy (dups, start, len); |
7038 | dups[len] = '\0'; | |
252b5132 | 7039 | |
dc810e39 | 7040 | return dups; |
252b5132 RH |
7041 | } |
7042 | ||
bb0082d6 | 7043 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 7044 | static bfd_boolean |
217aa764 | 7045 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7046 | { |
4a938328 MS |
7047 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
7048 | { | |
7049 | elfcore_psinfo_t psinfo; | |
252b5132 | 7050 | |
7ee38065 | 7051 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7052 | |
4a938328 | 7053 | elf_tdata (abfd)->core_program |
936e320b AM |
7054 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7055 | sizeof (psinfo.pr_fname)); | |
252b5132 | 7056 | |
4a938328 | 7057 | elf_tdata (abfd)->core_command |
936e320b AM |
7058 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7059 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 7060 | } |
7ee38065 | 7061 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
7062 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
7063 | { | |
7064 | /* 64-bit host, 32-bit corefile */ | |
7065 | elfcore_psinfo32_t psinfo; | |
7066 | ||
7ee38065 | 7067 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 7068 | |
4a938328 | 7069 | elf_tdata (abfd)->core_program |
936e320b AM |
7070 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
7071 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
7072 | |
7073 | elf_tdata (abfd)->core_command | |
936e320b AM |
7074 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
7075 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
7076 | } |
7077 | #endif | |
7078 | ||
7079 | else | |
7080 | { | |
7081 | /* Fail - we don't know how to handle any other | |
7082 | note size (ie. data object type). */ | |
b34976b6 | 7083 | return TRUE; |
4a938328 | 7084 | } |
252b5132 RH |
7085 | |
7086 | /* Note that for some reason, a spurious space is tacked | |
7087 | onto the end of the args in some (at least one anyway) | |
c044fabd | 7088 | implementations, so strip it off if it exists. */ |
252b5132 RH |
7089 | |
7090 | { | |
c044fabd | 7091 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
7092 | int n = strlen (command); |
7093 | ||
7094 | if (0 < n && command[n - 1] == ' ') | |
7095 | command[n - 1] = '\0'; | |
7096 | } | |
7097 | ||
b34976b6 | 7098 | return TRUE; |
252b5132 RH |
7099 | } |
7100 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
7101 | ||
252b5132 | 7102 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 7103 | static bfd_boolean |
217aa764 | 7104 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7105 | { |
f572a39d AM |
7106 | if (note->descsz == sizeof (pstatus_t) |
7107 | #if defined (HAVE_PXSTATUS_T) | |
7108 | || note->descsz == sizeof (pxstatus_t) | |
7109 | #endif | |
7110 | ) | |
4a938328 MS |
7111 | { |
7112 | pstatus_t pstat; | |
252b5132 | 7113 | |
4a938328 | 7114 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7115 | |
4a938328 MS |
7116 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7117 | } | |
7ee38065 | 7118 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7119 | else if (note->descsz == sizeof (pstatus32_t)) |
7120 | { | |
7121 | /* 64-bit host, 32-bit corefile */ | |
7122 | pstatus32_t pstat; | |
252b5132 | 7123 | |
4a938328 | 7124 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7125 | |
4a938328 MS |
7126 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7127 | } | |
7128 | #endif | |
252b5132 RH |
7129 | /* Could grab some more details from the "representative" |
7130 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7131 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7132 | |
b34976b6 | 7133 | return TRUE; |
252b5132 RH |
7134 | } |
7135 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7136 | ||
252b5132 | 7137 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7138 | static bfd_boolean |
217aa764 | 7139 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7140 | { |
7141 | lwpstatus_t lwpstat; | |
7142 | char buf[100]; | |
c044fabd | 7143 | char *name; |
d4c88bbb | 7144 | size_t len; |
c044fabd | 7145 | asection *sect; |
252b5132 | 7146 | |
f572a39d AM |
7147 | if (note->descsz != sizeof (lwpstat) |
7148 | #if defined (HAVE_LWPXSTATUS_T) | |
7149 | && note->descsz != sizeof (lwpxstatus_t) | |
7150 | #endif | |
7151 | ) | |
b34976b6 | 7152 | return TRUE; |
252b5132 RH |
7153 | |
7154 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7155 | ||
7156 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7157 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7158 | ||
c044fabd | 7159 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7160 | |
7161 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7162 | len = strlen (buf) + 1; |
217aa764 | 7163 | name = bfd_alloc (abfd, len); |
252b5132 | 7164 | if (name == NULL) |
b34976b6 | 7165 | return FALSE; |
d4c88bbb | 7166 | memcpy (name, buf, len); |
252b5132 | 7167 | |
62f3bb11 | 7168 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7169 | if (sect == NULL) |
b34976b6 | 7170 | return FALSE; |
252b5132 RH |
7171 | |
7172 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7173 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7174 | sect->filepos = note->descpos |
7175 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7176 | #endif | |
7177 | ||
7178 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7179 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7180 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7181 | #endif | |
7182 | ||
7183 | sect->flags = SEC_HAS_CONTENTS; | |
7184 | sect->alignment_power = 2; | |
7185 | ||
7186 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7187 | return FALSE; |
252b5132 RH |
7188 | |
7189 | /* Make a ".reg2/999" section */ | |
7190 | ||
7191 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7192 | len = strlen (buf) + 1; |
217aa764 | 7193 | name = bfd_alloc (abfd, len); |
252b5132 | 7194 | if (name == NULL) |
b34976b6 | 7195 | return FALSE; |
d4c88bbb | 7196 | memcpy (name, buf, len); |
252b5132 | 7197 | |
62f3bb11 | 7198 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7199 | if (sect == NULL) |
b34976b6 | 7200 | return FALSE; |
252b5132 RH |
7201 | |
7202 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7203 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7204 | sect->filepos = note->descpos |
7205 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7206 | #endif | |
7207 | ||
7208 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7209 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7210 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7211 | #endif | |
7212 | ||
7213 | sect->flags = SEC_HAS_CONTENTS; | |
7214 | sect->alignment_power = 2; | |
7215 | ||
936e320b | 7216 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7217 | } |
7218 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7219 | ||
16e9c715 | 7220 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7221 | static bfd_boolean |
217aa764 | 7222 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7223 | { |
7224 | char buf[30]; | |
c044fabd | 7225 | char *name; |
d4c88bbb | 7226 | size_t len; |
c044fabd | 7227 | asection *sect; |
16e9c715 NC |
7228 | win32_pstatus_t pstatus; |
7229 | ||
7230 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7231 | return TRUE; |
16e9c715 | 7232 | |
e8eab623 | 7233 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7234 | |
7235 | switch (pstatus.data_type) | |
16e9c715 NC |
7236 | { |
7237 | case NOTE_INFO_PROCESS: | |
7238 | /* FIXME: need to add ->core_command. */ | |
7239 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7240 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7241 | break; |
16e9c715 NC |
7242 | |
7243 | case NOTE_INFO_THREAD: | |
7244 | /* Make a ".reg/999" section. */ | |
1f170678 | 7245 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7246 | |
d4c88bbb | 7247 | len = strlen (buf) + 1; |
217aa764 | 7248 | name = bfd_alloc (abfd, len); |
16e9c715 | 7249 | if (name == NULL) |
b34976b6 | 7250 | return FALSE; |
c044fabd | 7251 | |
d4c88bbb | 7252 | memcpy (name, buf, len); |
16e9c715 | 7253 | |
62f3bb11 | 7254 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7255 | if (sect == NULL) |
b34976b6 | 7256 | return FALSE; |
c044fabd | 7257 | |
eea6121a | 7258 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7259 | sect->filepos = (note->descpos |
7260 | + offsetof (struct win32_pstatus, | |
7261 | data.thread_info.thread_context)); | |
16e9c715 NC |
7262 | sect->flags = SEC_HAS_CONTENTS; |
7263 | sect->alignment_power = 2; | |
7264 | ||
7265 | if (pstatus.data.thread_info.is_active_thread) | |
7266 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7267 | return FALSE; |
16e9c715 NC |
7268 | break; |
7269 | ||
7270 | case NOTE_INFO_MODULE: | |
7271 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7272 | sprintf (buf, ".module/%08lx", |
7273 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7274 | |
d4c88bbb | 7275 | len = strlen (buf) + 1; |
217aa764 | 7276 | name = bfd_alloc (abfd, len); |
16e9c715 | 7277 | if (name == NULL) |
b34976b6 | 7278 | return FALSE; |
c044fabd | 7279 | |
d4c88bbb | 7280 | memcpy (name, buf, len); |
252b5132 | 7281 | |
62f3bb11 | 7282 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7283 | |
16e9c715 | 7284 | if (sect == NULL) |
b34976b6 | 7285 | return FALSE; |
c044fabd | 7286 | |
eea6121a | 7287 | sect->size = note->descsz; |
16e9c715 NC |
7288 | sect->filepos = note->descpos; |
7289 | sect->flags = SEC_HAS_CONTENTS; | |
7290 | sect->alignment_power = 2; | |
7291 | break; | |
7292 | ||
7293 | default: | |
b34976b6 | 7294 | return TRUE; |
16e9c715 NC |
7295 | } |
7296 | ||
b34976b6 | 7297 | return TRUE; |
16e9c715 NC |
7298 | } |
7299 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7300 | |
b34976b6 | 7301 | static bfd_boolean |
217aa764 | 7302 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7303 | { |
9c5bfbb7 | 7304 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7305 | |
252b5132 RH |
7306 | switch (note->type) |
7307 | { | |
7308 | default: | |
b34976b6 | 7309 | return TRUE; |
252b5132 | 7310 | |
252b5132 | 7311 | case NT_PRSTATUS: |
bb0082d6 AM |
7312 | if (bed->elf_backend_grok_prstatus) |
7313 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7314 | return TRUE; |
bb0082d6 | 7315 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7316 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7317 | #else |
b34976b6 | 7318 | return TRUE; |
252b5132 RH |
7319 | #endif |
7320 | ||
7321 | #if defined (HAVE_PSTATUS_T) | |
7322 | case NT_PSTATUS: | |
7323 | return elfcore_grok_pstatus (abfd, note); | |
7324 | #endif | |
7325 | ||
7326 | #if defined (HAVE_LWPSTATUS_T) | |
7327 | case NT_LWPSTATUS: | |
7328 | return elfcore_grok_lwpstatus (abfd, note); | |
7329 | #endif | |
7330 | ||
7331 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7332 | return elfcore_grok_prfpreg (abfd, note); | |
7333 | ||
16e9c715 | 7334 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7335 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7336 | return elfcore_grok_win32pstatus (abfd, note); |
7337 | #endif | |
7338 | ||
c044fabd | 7339 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7340 | if (note->namesz == 6 |
7341 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7342 | return elfcore_grok_prxfpreg (abfd, note); |
7343 | else | |
b34976b6 | 7344 | return TRUE; |
ff08c6bb | 7345 | |
252b5132 RH |
7346 | case NT_PRPSINFO: |
7347 | case NT_PSINFO: | |
bb0082d6 AM |
7348 | if (bed->elf_backend_grok_psinfo) |
7349 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7350 | return TRUE; |
bb0082d6 | 7351 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7352 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7353 | #else |
b34976b6 | 7354 | return TRUE; |
252b5132 | 7355 | #endif |
3333a7c3 RM |
7356 | |
7357 | case NT_AUXV: | |
7358 | { | |
62f3bb11 | 7359 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7360 | |
7361 | if (sect == NULL) | |
7362 | return FALSE; | |
eea6121a | 7363 | sect->size = note->descsz; |
3333a7c3 RM |
7364 | sect->filepos = note->descpos; |
7365 | sect->flags = SEC_HAS_CONTENTS; | |
7366 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7367 | ||
7368 | return TRUE; | |
7369 | } | |
252b5132 RH |
7370 | } |
7371 | } | |
7372 | ||
b34976b6 | 7373 | static bfd_boolean |
217aa764 | 7374 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7375 | { |
7376 | char *cp; | |
7377 | ||
7378 | cp = strchr (note->namedata, '@'); | |
7379 | if (cp != NULL) | |
7380 | { | |
d2b64500 | 7381 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7382 | return TRUE; |
50b2bdb7 | 7383 | } |
b34976b6 | 7384 | return FALSE; |
50b2bdb7 AM |
7385 | } |
7386 | ||
b34976b6 | 7387 | static bfd_boolean |
217aa764 | 7388 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7389 | { |
7390 | ||
7391 | /* Signal number at offset 0x08. */ | |
7392 | elf_tdata (abfd)->core_signal | |
7393 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7394 | ||
7395 | /* Process ID at offset 0x50. */ | |
7396 | elf_tdata (abfd)->core_pid | |
7397 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7398 | ||
7399 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7400 | elf_tdata (abfd)->core_command | |
7401 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7402 | ||
7720ba9f MK |
7403 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7404 | note); | |
50b2bdb7 AM |
7405 | } |
7406 | ||
b34976b6 | 7407 | static bfd_boolean |
217aa764 | 7408 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7409 | { |
7410 | int lwp; | |
7411 | ||
7412 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7413 | elf_tdata (abfd)->core_lwpid = lwp; | |
7414 | ||
b4db1224 | 7415 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7416 | { |
7417 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7418 | find this note before any of the others, which is fine, | |
7419 | since the kernel writes this note out first when it | |
7420 | creates a core file. */ | |
47d9a591 | 7421 | |
50b2bdb7 AM |
7422 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7423 | } | |
7424 | ||
b4db1224 JT |
7425 | /* As of Jan 2002 there are no other machine-independent notes |
7426 | defined for NetBSD core files. If the note type is less | |
7427 | than the start of the machine-dependent note types, we don't | |
7428 | understand it. */ | |
47d9a591 | 7429 | |
b4db1224 | 7430 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7431 | return TRUE; |
50b2bdb7 AM |
7432 | |
7433 | ||
7434 | switch (bfd_get_arch (abfd)) | |
7435 | { | |
7436 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7437 | PT_GETFPREGS == mach+2. */ | |
7438 | ||
7439 | case bfd_arch_alpha: | |
7440 | case bfd_arch_sparc: | |
7441 | switch (note->type) | |
7442 | { | |
b4db1224 | 7443 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7444 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7445 | ||
b4db1224 | 7446 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7447 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7448 | ||
7449 | default: | |
b34976b6 | 7450 | return TRUE; |
50b2bdb7 AM |
7451 | } |
7452 | ||
7453 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7454 | PT_GETFPREGS == mach+3. */ | |
7455 | ||
7456 | default: | |
7457 | switch (note->type) | |
7458 | { | |
b4db1224 | 7459 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7460 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7461 | ||
b4db1224 | 7462 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7463 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7464 | ||
7465 | default: | |
b34976b6 | 7466 | return TRUE; |
50b2bdb7 AM |
7467 | } |
7468 | } | |
7469 | /* NOTREACHED */ | |
7470 | } | |
7471 | ||
07c6e936 | 7472 | static bfd_boolean |
217aa764 | 7473 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7474 | { |
7475 | void *ddata = note->descdata; | |
7476 | char buf[100]; | |
7477 | char *name; | |
7478 | asection *sect; | |
f8843e87 AM |
7479 | short sig; |
7480 | unsigned flags; | |
07c6e936 NC |
7481 | |
7482 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7483 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7484 | ||
f8843e87 AM |
7485 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7486 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7487 | ||
7488 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7489 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7490 | |
7491 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7492 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7493 | { | |
7494 | elf_tdata (abfd)->core_signal = sig; | |
7495 | elf_tdata (abfd)->core_lwpid = *tid; | |
7496 | } | |
07c6e936 | 7497 | |
f8843e87 AM |
7498 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7499 | do not come from signals so we make sure we set the current | |
7500 | thread just in case. */ | |
7501 | if (flags & 0x00000080) | |
7502 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7503 | |
7504 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7505 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7506 | |
217aa764 | 7507 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7508 | if (name == NULL) |
7509 | return FALSE; | |
7510 | strcpy (name, buf); | |
7511 | ||
62f3bb11 | 7512 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7513 | if (sect == NULL) |
7514 | return FALSE; | |
7515 | ||
eea6121a | 7516 | sect->size = note->descsz; |
07c6e936 NC |
7517 | sect->filepos = note->descpos; |
7518 | sect->flags = SEC_HAS_CONTENTS; | |
7519 | sect->alignment_power = 2; | |
7520 | ||
7521 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7522 | } | |
7523 | ||
7524 | static bfd_boolean | |
d69f560c KW |
7525 | elfcore_grok_nto_regs (bfd *abfd, |
7526 | Elf_Internal_Note *note, | |
7527 | pid_t tid, | |
7528 | char *base) | |
07c6e936 NC |
7529 | { |
7530 | char buf[100]; | |
7531 | char *name; | |
7532 | asection *sect; | |
7533 | ||
d69f560c | 7534 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7535 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7536 | |
217aa764 | 7537 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7538 | if (name == NULL) |
7539 | return FALSE; | |
7540 | strcpy (name, buf); | |
7541 | ||
62f3bb11 | 7542 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7543 | if (sect == NULL) |
7544 | return FALSE; | |
7545 | ||
eea6121a | 7546 | sect->size = note->descsz; |
07c6e936 NC |
7547 | sect->filepos = note->descpos; |
7548 | sect->flags = SEC_HAS_CONTENTS; | |
7549 | sect->alignment_power = 2; | |
7550 | ||
f8843e87 AM |
7551 | /* This is the current thread. */ |
7552 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7553 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7554 | |
7555 | return TRUE; | |
07c6e936 NC |
7556 | } |
7557 | ||
7558 | #define BFD_QNT_CORE_INFO 7 | |
7559 | #define BFD_QNT_CORE_STATUS 8 | |
7560 | #define BFD_QNT_CORE_GREG 9 | |
7561 | #define BFD_QNT_CORE_FPREG 10 | |
7562 | ||
7563 | static bfd_boolean | |
217aa764 | 7564 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7565 | { |
7566 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7567 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7568 | function. */ |
7569 | static pid_t tid = 1; | |
7570 | ||
7571 | switch (note->type) | |
7572 | { | |
d69f560c KW |
7573 | case BFD_QNT_CORE_INFO: |
7574 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7575 | case BFD_QNT_CORE_STATUS: | |
7576 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7577 | case BFD_QNT_CORE_GREG: | |
7578 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7579 | case BFD_QNT_CORE_FPREG: | |
7580 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7581 | default: | |
7582 | return TRUE; | |
07c6e936 NC |
7583 | } |
7584 | } | |
7585 | ||
7c76fa91 MS |
7586 | /* Function: elfcore_write_note |
7587 | ||
47d9a591 | 7588 | Inputs: |
7c76fa91 MS |
7589 | buffer to hold note |
7590 | name of note | |
7591 | type of note | |
7592 | data for note | |
7593 | size of data for note | |
7594 | ||
7595 | Return: | |
7596 | End of buffer containing note. */ | |
7597 | ||
7598 | char * | |
217aa764 AM |
7599 | elfcore_write_note (bfd *abfd, |
7600 | char *buf, | |
7601 | int *bufsiz, | |
7602 | const char *name, | |
7603 | int type, | |
7604 | const void *input, | |
7605 | int size) | |
7c76fa91 MS |
7606 | { |
7607 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7608 | size_t namesz; |
7609 | size_t pad; | |
7610 | size_t newspace; | |
7c76fa91 MS |
7611 | char *p, *dest; |
7612 | ||
d4c88bbb AM |
7613 | namesz = 0; |
7614 | pad = 0; | |
7615 | if (name != NULL) | |
7616 | { | |
9c5bfbb7 | 7617 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7618 | |
7619 | namesz = strlen (name) + 1; | |
7620 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7621 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7622 | } |
7623 | ||
5de3bf90 | 7624 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7625 | |
7c76fa91 MS |
7626 | p = realloc (buf, *bufsiz + newspace); |
7627 | dest = p + *bufsiz; | |
7628 | *bufsiz += newspace; | |
7629 | xnp = (Elf_External_Note *) dest; | |
7630 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7631 | H_PUT_32 (abfd, size, xnp->descsz); | |
7632 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7633 | dest = xnp->name; |
7634 | if (name != NULL) | |
7635 | { | |
7636 | memcpy (dest, name, namesz); | |
7637 | dest += namesz; | |
7638 | while (pad != 0) | |
7639 | { | |
7640 | *dest++ = '\0'; | |
7641 | --pad; | |
7642 | } | |
7643 | } | |
7644 | memcpy (dest, input, size); | |
7c76fa91 MS |
7645 | return p; |
7646 | } | |
7647 | ||
7648 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7649 | char * | |
217aa764 AM |
7650 | elfcore_write_prpsinfo (bfd *abfd, |
7651 | char *buf, | |
7652 | int *bufsiz, | |
7653 | const char *fname, | |
7654 | const char *psargs) | |
7c76fa91 MS |
7655 | { |
7656 | int note_type; | |
7657 | char *note_name = "CORE"; | |
7658 | ||
7659 | #if defined (HAVE_PSINFO_T) | |
7660 | psinfo_t data; | |
7661 | note_type = NT_PSINFO; | |
7662 | #else | |
7663 | prpsinfo_t data; | |
7664 | note_type = NT_PRPSINFO; | |
7665 | #endif | |
7666 | ||
7667 | memset (&data, 0, sizeof (data)); | |
7668 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7669 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7670 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7671 | note_name, note_type, &data, sizeof (data)); |
7672 | } | |
7673 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7674 | ||
7675 | #if defined (HAVE_PRSTATUS_T) | |
7676 | char * | |
217aa764 AM |
7677 | elfcore_write_prstatus (bfd *abfd, |
7678 | char *buf, | |
7679 | int *bufsiz, | |
7680 | long pid, | |
7681 | int cursig, | |
7682 | const void *gregs) | |
7c76fa91 MS |
7683 | { |
7684 | prstatus_t prstat; | |
7685 | char *note_name = "CORE"; | |
7686 | ||
7687 | memset (&prstat, 0, sizeof (prstat)); | |
7688 | prstat.pr_pid = pid; | |
7689 | prstat.pr_cursig = cursig; | |
c106e334 | 7690 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7691 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7692 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7693 | } | |
7694 | #endif /* HAVE_PRSTATUS_T */ | |
7695 | ||
51316059 MS |
7696 | #if defined (HAVE_LWPSTATUS_T) |
7697 | char * | |
217aa764 AM |
7698 | elfcore_write_lwpstatus (bfd *abfd, |
7699 | char *buf, | |
7700 | int *bufsiz, | |
7701 | long pid, | |
7702 | int cursig, | |
7703 | const void *gregs) | |
51316059 MS |
7704 | { |
7705 | lwpstatus_t lwpstat; | |
7706 | char *note_name = "CORE"; | |
7707 | ||
7708 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7709 | lwpstat.pr_lwpid = pid >> 16; | |
7710 | lwpstat.pr_cursig = cursig; | |
7711 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7712 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7713 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7714 | #if !defined(gregs) | |
7715 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7716 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7717 | #else | |
7718 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7719 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7720 | #endif | |
7721 | #endif | |
47d9a591 | 7722 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7723 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7724 | } | |
7725 | #endif /* HAVE_LWPSTATUS_T */ | |
7726 | ||
7c76fa91 MS |
7727 | #if defined (HAVE_PSTATUS_T) |
7728 | char * | |
217aa764 AM |
7729 | elfcore_write_pstatus (bfd *abfd, |
7730 | char *buf, | |
7731 | int *bufsiz, | |
7732 | long pid, | |
7733 | int cursig, | |
7734 | const void *gregs) | |
7c76fa91 MS |
7735 | { |
7736 | pstatus_t pstat; | |
7737 | char *note_name = "CORE"; | |
7738 | ||
51316059 MS |
7739 | memset (&pstat, 0, sizeof (pstat)); |
7740 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7741 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7742 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7743 | return buf; | |
7c76fa91 MS |
7744 | } |
7745 | #endif /* HAVE_PSTATUS_T */ | |
7746 | ||
7747 | char * | |
217aa764 AM |
7748 | elfcore_write_prfpreg (bfd *abfd, |
7749 | char *buf, | |
7750 | int *bufsiz, | |
7751 | const void *fpregs, | |
7752 | int size) | |
7c76fa91 MS |
7753 | { |
7754 | char *note_name = "CORE"; | |
47d9a591 | 7755 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7756 | note_name, NT_FPREGSET, fpregs, size); |
7757 | } | |
7758 | ||
7759 | char * | |
217aa764 AM |
7760 | elfcore_write_prxfpreg (bfd *abfd, |
7761 | char *buf, | |
7762 | int *bufsiz, | |
7763 | const void *xfpregs, | |
7764 | int size) | |
7c76fa91 MS |
7765 | { |
7766 | char *note_name = "LINUX"; | |
47d9a591 | 7767 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7768 | note_name, NT_PRXFPREG, xfpregs, size); |
7769 | } | |
7770 | ||
b34976b6 | 7771 | static bfd_boolean |
217aa764 | 7772 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7773 | { |
c044fabd KH |
7774 | char *buf; |
7775 | char *p; | |
252b5132 RH |
7776 | |
7777 | if (size <= 0) | |
b34976b6 | 7778 | return TRUE; |
252b5132 | 7779 | |
dc810e39 | 7780 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7781 | return FALSE; |
252b5132 | 7782 | |
dc810e39 | 7783 | buf = bfd_malloc (size); |
252b5132 | 7784 | if (buf == NULL) |
b34976b6 | 7785 | return FALSE; |
252b5132 | 7786 | |
dc810e39 | 7787 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7788 | { |
7789 | error: | |
7790 | free (buf); | |
b34976b6 | 7791 | return FALSE; |
252b5132 RH |
7792 | } |
7793 | ||
7794 | p = buf; | |
7795 | while (p < buf + size) | |
7796 | { | |
c044fabd KH |
7797 | /* FIXME: bad alignment assumption. */ |
7798 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7799 | Elf_Internal_Note in; |
7800 | ||
dc810e39 | 7801 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7802 | |
dc810e39 | 7803 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7804 | in.namedata = xnp->name; |
7805 | ||
dc810e39 | 7806 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7807 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7808 | in.descpos = offset + (in.descdata - buf); | |
7809 | ||
50b2bdb7 AM |
7810 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7811 | { | |
7812 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7813 | goto error; | |
7814 | } | |
07c6e936 NC |
7815 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7816 | { | |
7817 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7818 | goto error; | |
7819 | } | |
50b2bdb7 AM |
7820 | else |
7821 | { | |
7822 | if (! elfcore_grok_note (abfd, &in)) | |
7823 | goto error; | |
7824 | } | |
252b5132 RH |
7825 | |
7826 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7827 | } | |
7828 | ||
7829 | free (buf); | |
b34976b6 | 7830 | return TRUE; |
252b5132 | 7831 | } |
98d8431c JB |
7832 | \f |
7833 | /* Providing external access to the ELF program header table. */ | |
7834 | ||
7835 | /* Return an upper bound on the number of bytes required to store a | |
7836 | copy of ABFD's program header table entries. Return -1 if an error | |
7837 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7838 | |
98d8431c | 7839 | long |
217aa764 | 7840 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7841 | { |
7842 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7843 | { | |
7844 | bfd_set_error (bfd_error_wrong_format); | |
7845 | return -1; | |
7846 | } | |
7847 | ||
936e320b | 7848 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7849 | } |
7850 | ||
98d8431c JB |
7851 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7852 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7853 | defined in include/elf/internal.h. To find out how large the | |
7854 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7855 | ||
7856 | Return the number of program header table entries read, or -1 if an | |
7857 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7858 | |
98d8431c | 7859 | int |
217aa764 | 7860 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7861 | { |
7862 | int num_phdrs; | |
7863 | ||
7864 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7865 | { | |
7866 | bfd_set_error (bfd_error_wrong_format); | |
7867 | return -1; | |
7868 | } | |
7869 | ||
7870 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7871 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7872 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7873 | ||
7874 | return num_phdrs; | |
7875 | } | |
ae4221d7 L |
7876 | |
7877 | void | |
217aa764 | 7878 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 7879 | { |
d3b05f8d | 7880 | #ifdef BFD64 |
ae4221d7 L |
7881 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7882 | ||
7883 | i_ehdrp = elf_elfheader (abfd); | |
7884 | if (i_ehdrp == NULL) | |
7885 | sprintf_vma (buf, value); | |
7886 | else | |
7887 | { | |
7888 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7889 | { |
ae4221d7 | 7890 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7891 | sprintf (buf, "%016lx", value); |
ae4221d7 | 7892 | #else |
cc55aec9 AM |
7893 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
7894 | _bfd_int64_low (value)); | |
ae4221d7 | 7895 | #endif |
cc55aec9 | 7896 | } |
ae4221d7 L |
7897 | else |
7898 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
7899 | } | |
d3b05f8d L |
7900 | #else |
7901 | sprintf_vma (buf, value); | |
7902 | #endif | |
ae4221d7 L |
7903 | } |
7904 | ||
7905 | void | |
217aa764 | 7906 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 7907 | { |
d3b05f8d | 7908 | #ifdef BFD64 |
ae4221d7 L |
7909 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7910 | ||
7911 | i_ehdrp = elf_elfheader (abfd); | |
7912 | if (i_ehdrp == NULL) | |
7913 | fprintf_vma ((FILE *) stream, value); | |
7914 | else | |
7915 | { | |
7916 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7917 | { |
ae4221d7 | 7918 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7919 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 7920 | #else |
cc55aec9 AM |
7921 | fprintf ((FILE *) stream, "%08lx%08lx", |
7922 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 7923 | #endif |
cc55aec9 | 7924 | } |
ae4221d7 L |
7925 | else |
7926 | fprintf ((FILE *) stream, "%08lx", | |
7927 | (unsigned long) (value & 0xffffffff)); | |
7928 | } | |
d3b05f8d L |
7929 | #else |
7930 | fprintf_vma ((FILE *) stream, value); | |
7931 | #endif | |
ae4221d7 | 7932 | } |
db6751f2 JJ |
7933 | |
7934 | enum elf_reloc_type_class | |
217aa764 | 7935 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
7936 | { |
7937 | return reloc_class_normal; | |
7938 | } | |
f8df10f4 | 7939 | |
47d9a591 | 7940 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
7941 | relocation against a local symbol. */ |
7942 | ||
7943 | bfd_vma | |
217aa764 AM |
7944 | _bfd_elf_rela_local_sym (bfd *abfd, |
7945 | Elf_Internal_Sym *sym, | |
8517fae7 | 7946 | asection **psec, |
217aa764 | 7947 | Elf_Internal_Rela *rel) |
f8df10f4 | 7948 | { |
8517fae7 | 7949 | asection *sec = *psec; |
f8df10f4 JJ |
7950 | bfd_vma relocation; |
7951 | ||
7952 | relocation = (sec->output_section->vma | |
7953 | + sec->output_offset | |
7954 | + sym->st_value); | |
7955 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 7956 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 7957 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 7958 | { |
f8df10f4 | 7959 | rel->r_addend = |
8517fae7 | 7960 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 7961 | elf_section_data (sec)->sec_info, |
753731ee AM |
7962 | sym->st_value + rel->r_addend); |
7963 | if (sec != *psec) | |
7964 | { | |
7965 | /* If we have changed the section, and our original section is | |
7966 | marked with SEC_EXCLUDE, it means that the original | |
7967 | SEC_MERGE section has been completely subsumed in some | |
7968 | other SEC_MERGE section. In this case, we need to leave | |
7969 | some info around for --emit-relocs. */ | |
7970 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7971 | sec->kept_section = *psec; | |
7972 | sec = *psec; | |
7973 | } | |
8517fae7 AM |
7974 | rel->r_addend -= relocation; |
7975 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
7976 | } |
7977 | return relocation; | |
7978 | } | |
c629eae0 JJ |
7979 | |
7980 | bfd_vma | |
217aa764 AM |
7981 | _bfd_elf_rel_local_sym (bfd *abfd, |
7982 | Elf_Internal_Sym *sym, | |
7983 | asection **psec, | |
7984 | bfd_vma addend) | |
47d9a591 | 7985 | { |
c629eae0 JJ |
7986 | asection *sec = *psec; |
7987 | ||
68bfbfcc | 7988 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
7989 | return sym->st_value + addend; |
7990 | ||
7991 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 7992 | elf_section_data (sec)->sec_info, |
753731ee | 7993 | sym->st_value + addend); |
c629eae0 JJ |
7994 | } |
7995 | ||
7996 | bfd_vma | |
217aa764 | 7997 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 7998 | struct bfd_link_info *info, |
217aa764 AM |
7999 | asection *sec, |
8000 | bfd_vma offset) | |
c629eae0 | 8001 | { |
68bfbfcc | 8002 | switch (sec->sec_info_type) |
65765700 JJ |
8003 | { |
8004 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
8005 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
8006 | offset); | |
65765700 | 8007 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 8008 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
8009 | default: |
8010 | return offset; | |
8011 | } | |
c629eae0 | 8012 | } |
3333a7c3 RM |
8013 | \f |
8014 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
8015 | reconstruct an ELF file by reading the segments out of remote memory | |
8016 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
8017 | points to. If not null, *LOADBASEP is filled in with the difference | |
8018 | between the VMAs from which the segments were read, and the VMAs the | |
8019 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
8020 | ||
8021 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
8022 | remote memory at target address VMA into the local buffer at MYADDR; it | |
8023 | should return zero on success or an `errno' code on failure. TEMPL must | |
8024 | be a BFD for an ELF target with the word size and byte order found in | |
8025 | the remote memory. */ | |
8026 | ||
8027 | bfd * | |
217aa764 AM |
8028 | bfd_elf_bfd_from_remote_memory |
8029 | (bfd *templ, | |
8030 | bfd_vma ehdr_vma, | |
8031 | bfd_vma *loadbasep, | |
f075ee0c | 8032 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
8033 | { |
8034 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
8035 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
8036 | } | |
4c45e5c9 JJ |
8037 | \f |
8038 | long | |
c9727e01 AM |
8039 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
8040 | long symcount ATTRIBUTE_UNUSED, | |
8041 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 8042 | long dynsymcount, |
c9727e01 AM |
8043 | asymbol **dynsyms, |
8044 | asymbol **ret) | |
4c45e5c9 JJ |
8045 | { |
8046 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
8047 | asection *relplt; | |
8048 | asymbol *s; | |
8049 | const char *relplt_name; | |
8050 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
8051 | arelent *p; | |
8052 | long count, i, n; | |
8053 | size_t size; | |
8054 | Elf_Internal_Shdr *hdr; | |
8055 | char *names; | |
8056 | asection *plt; | |
8057 | ||
8615f3f2 AM |
8058 | *ret = NULL; |
8059 | ||
90e3cdf2 JJ |
8060 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
8061 | return 0; | |
8062 | ||
8615f3f2 AM |
8063 | if (dynsymcount <= 0) |
8064 | return 0; | |
8065 | ||
4c45e5c9 JJ |
8066 | if (!bed->plt_sym_val) |
8067 | return 0; | |
8068 | ||
8069 | relplt_name = bed->relplt_name; | |
8070 | if (relplt_name == NULL) | |
8071 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
8072 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
8073 | if (relplt == NULL) | |
8074 | return 0; | |
8075 | ||
8076 | hdr = &elf_section_data (relplt)->this_hdr; | |
8077 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
8078 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
8079 | return 0; | |
8080 | ||
8081 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
8082 | if (plt == NULL) | |
8083 | return 0; | |
8084 | ||
8085 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 8086 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
8087 | return -1; |
8088 | ||
eea6121a | 8089 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
8090 | size = count * sizeof (asymbol); |
8091 | p = relplt->relocation; | |
8092 | for (i = 0; i < count; i++, s++, p++) | |
8093 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
8094 | ||
8095 | s = *ret = bfd_malloc (size); | |
8096 | if (s == NULL) | |
8097 | return -1; | |
8098 | ||
8099 | names = (char *) (s + count); | |
8100 | p = relplt->relocation; | |
8101 | n = 0; | |
8102 | for (i = 0; i < count; i++, s++, p++) | |
8103 | { | |
8104 | size_t len; | |
8105 | bfd_vma addr; | |
8106 | ||
8107 | addr = bed->plt_sym_val (i, plt, p); | |
8108 | if (addr == (bfd_vma) -1) | |
8109 | continue; | |
8110 | ||
8111 | *s = **p->sym_ptr_ptr; | |
8112 | s->section = plt; | |
8113 | s->value = addr - plt->vma; | |
8114 | s->name = names; | |
8115 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8116 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8117 | names += len; | |
8118 | memcpy (names, "@plt", sizeof ("@plt")); | |
8119 | names += sizeof ("@plt"); | |
8120 | ++n; | |
8121 | } | |
8122 | ||
8123 | return n; | |
8124 | } | |
3d7f7666 L |
8125 | |
8126 | /* Sort symbol by binding and section. We want to put definitions | |
8127 | sorted by section at the beginning. */ | |
8128 | ||
8129 | static int | |
8130 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8131 | { | |
8132 | const Elf_Internal_Sym *s1; | |
8133 | const Elf_Internal_Sym *s2; | |
8134 | int shndx; | |
8135 | ||
8136 | /* Make sure that undefined symbols are at the end. */ | |
8137 | s1 = (const Elf_Internal_Sym *) arg1; | |
8138 | if (s1->st_shndx == SHN_UNDEF) | |
8139 | return 1; | |
8140 | s2 = (const Elf_Internal_Sym *) arg2; | |
8141 | if (s2->st_shndx == SHN_UNDEF) | |
8142 | return -1; | |
8143 | ||
8144 | /* Sorted by section index. */ | |
8145 | shndx = s1->st_shndx - s2->st_shndx; | |
8146 | if (shndx != 0) | |
8147 | return shndx; | |
8148 | ||
8149 | /* Sorted by binding. */ | |
8150 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8151 | } | |
8152 | ||
8153 | struct elf_symbol | |
8154 | { | |
8155 | Elf_Internal_Sym *sym; | |
8156 | const char *name; | |
8157 | }; | |
8158 | ||
8159 | static int | |
8160 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8161 | { | |
8162 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8163 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8164 | return strcmp (s1->name, s2->name); | |
8165 | } | |
8166 | ||
8167 | /* Check if 2 sections define the same set of local and global | |
8168 | symbols. */ | |
8169 | ||
8170 | bfd_boolean | |
8171 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8172 | { | |
8173 | bfd *bfd1, *bfd2; | |
8174 | const struct elf_backend_data *bed1, *bed2; | |
8175 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8176 | bfd_size_type symcount1, symcount2; | |
8177 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8178 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8179 | Elf_Internal_Sym *isymend; | |
8180 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8181 | bfd_size_type count1, count2, i; | |
8182 | int shndx1, shndx2; | |
8183 | bfd_boolean result; | |
8184 | ||
8185 | bfd1 = sec1->owner; | |
8186 | bfd2 = sec2->owner; | |
8187 | ||
8188 | /* If both are .gnu.linkonce sections, they have to have the same | |
8189 | section name. */ | |
8190 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8191 | sizeof ".gnu.linkonce" - 1) == 0 | |
8192 | && strncmp (sec2->name, ".gnu.linkonce", | |
8193 | sizeof ".gnu.linkonce" - 1) == 0) | |
8194 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8195 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8196 | ||
8197 | /* Both sections have to be in ELF. */ | |
8198 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8199 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8200 | return FALSE; | |
8201 | ||
8202 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8203 | return FALSE; | |
8204 | ||
8205 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8206 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8207 | { | |
8208 | /* If both are members of section groups, they have to have the | |
8209 | same group name. */ | |
8210 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8211 | return FALSE; | |
8212 | } | |
8213 | ||
8214 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8215 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8216 | if (shndx1 == -1 || shndx2 == -1) | |
8217 | return FALSE; | |
8218 | ||
8219 | bed1 = get_elf_backend_data (bfd1); | |
8220 | bed2 = get_elf_backend_data (bfd2); | |
8221 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8222 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8223 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8224 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8225 | ||
8226 | if (symcount1 == 0 || symcount2 == 0) | |
8227 | return FALSE; | |
8228 | ||
8229 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8230 | NULL, NULL, NULL); | |
8231 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8232 | NULL, NULL, NULL); | |
8233 | ||
8234 | result = FALSE; | |
8235 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8236 | goto done; | |
8237 | ||
8238 | /* Sort symbols by binding and section. Global definitions are at | |
8239 | the beginning. */ | |
8240 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8241 | elf_sort_elf_symbol); | |
8242 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8243 | elf_sort_elf_symbol); | |
8244 | ||
8245 | /* Count definitions in the section. */ | |
8246 | count1 = 0; | |
8247 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8248 | isym < isymend; isym++) | |
8249 | { | |
8250 | if (isym->st_shndx == (unsigned int) shndx1) | |
8251 | { | |
8252 | if (count1 == 0) | |
8253 | isymstart1 = isym; | |
8254 | count1++; | |
8255 | } | |
8256 | ||
8257 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8258 | break; | |
8259 | } | |
8260 | ||
8261 | count2 = 0; | |
8262 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8263 | isym < isymend; isym++) | |
8264 | { | |
8265 | if (isym->st_shndx == (unsigned int) shndx2) | |
8266 | { | |
8267 | if (count2 == 0) | |
8268 | isymstart2 = isym; | |
8269 | count2++; | |
8270 | } | |
8271 | ||
8272 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8273 | break; | |
8274 | } | |
8275 | ||
8276 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8277 | goto done; | |
8278 | ||
8279 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8280 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8281 | ||
8282 | if (symtable1 == NULL || symtable2 == NULL) | |
8283 | goto done; | |
8284 | ||
8285 | symp = symtable1; | |
8286 | for (isym = isymstart1, isymend = isym + count1; | |
8287 | isym < isymend; isym++) | |
8288 | { | |
8289 | symp->sym = isym; | |
8290 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8291 | hdr1->sh_link, | |
8292 | isym->st_name); | |
8293 | symp++; | |
8294 | } | |
8295 | ||
8296 | symp = symtable2; | |
8297 | for (isym = isymstart2, isymend = isym + count1; | |
8298 | isym < isymend; isym++) | |
8299 | { | |
8300 | symp->sym = isym; | |
8301 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8302 | hdr2->sh_link, | |
8303 | isym->st_name); | |
8304 | symp++; | |
8305 | } | |
8306 | ||
8307 | /* Sort symbol by name. */ | |
8308 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8309 | elf_sym_name_compare); | |
8310 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8311 | elf_sym_name_compare); | |
8312 | ||
8313 | for (i = 0; i < count1; i++) | |
8314 | /* Two symbols must have the same binding, type and name. */ | |
8315 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8316 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8317 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8318 | goto done; | |
8319 | ||
8320 | result = TRUE; | |
8321 | ||
8322 | done: | |
8323 | if (symtable1) | |
8324 | free (symtable1); | |
8325 | if (symtable2) | |
8326 | free (symtable2); | |
8327 | if (isymbuf1) | |
8328 | free (isymbuf1); | |
8329 | if (isymbuf2) | |
8330 | free (isymbuf2); | |
8331 | ||
8332 | return result; | |
8333 | } |