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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 |
5e8d7549 | 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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, | |
410 | Elf_Internal_Sym *isym) | |
5cab59f6 AM |
411 | { |
412 | unsigned int iname = isym->st_name; | |
be8dd2ca | 413 | unsigned int shindex = symtab_hdr->sh_link; |
138f35cc JJ |
414 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
415 | /* Check for a bogus st_shndx to avoid crashing. */ | |
416 | && isym->st_shndx < elf_numsections (abfd) | |
417 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
418 | { |
419 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
420 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
421 | } | |
422 | ||
423 | return bfd_elf_string_from_elf_section (abfd, shindex, iname); | |
424 | } | |
425 | ||
dbb410c3 AM |
426 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
427 | sections. The first element is the flags, the rest are section | |
428 | pointers. */ | |
429 | ||
430 | typedef union elf_internal_group { | |
431 | Elf_Internal_Shdr *shdr; | |
432 | unsigned int flags; | |
433 | } Elf_Internal_Group; | |
434 | ||
b885599b AM |
435 | /* Return the name of the group signature symbol. Why isn't the |
436 | signature just a string? */ | |
437 | ||
438 | static const char * | |
217aa764 | 439 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 440 | { |
9dce4196 | 441 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
442 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
443 | Elf_External_Sym_Shndx eshndx; | |
444 | Elf_Internal_Sym isym; | |
b885599b AM |
445 | |
446 | /* First we need to ensure the symbol table is available. */ | |
447 | if (! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
448 | return NULL; | |
449 | ||
9dce4196 AM |
450 | /* Go read the symbol. */ |
451 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
452 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
453 | &isym, esym, &eshndx) == NULL) | |
b885599b | 454 | return NULL; |
9dce4196 | 455 | |
be8dd2ca | 456 | return bfd_elf_sym_name (abfd, hdr, &isym); |
b885599b AM |
457 | } |
458 | ||
dbb410c3 AM |
459 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
460 | ||
b34976b6 | 461 | static bfd_boolean |
217aa764 | 462 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
463 | { |
464 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
465 | ||
466 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
467 | is set to -1 if there are no SHT_GROUP sections. */ | |
468 | if (num_group == 0) | |
469 | { | |
470 | unsigned int i, shnum; | |
471 | ||
472 | /* First count the number of groups. If we have a SHT_GROUP | |
473 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 474 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
475 | num_group = 0; |
476 | for (i = 0; i < shnum; i++) | |
477 | { | |
478 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
479 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
480 | num_group += 1; | |
481 | } | |
482 | ||
483 | if (num_group == 0) | |
973ffd63 | 484 | num_group = (unsigned) -1; |
dbb410c3 AM |
485 | elf_tdata (abfd)->num_group = num_group; |
486 | ||
487 | if (num_group > 0) | |
488 | { | |
489 | /* We keep a list of elf section headers for group sections, | |
490 | so we can find them quickly. */ | |
491 | bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *); | |
492 | elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt); | |
493 | if (elf_tdata (abfd)->group_sect_ptr == NULL) | |
b34976b6 | 494 | return FALSE; |
dbb410c3 AM |
495 | |
496 | num_group = 0; | |
497 | for (i = 0; i < shnum; i++) | |
498 | { | |
499 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
500 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
501 | { | |
973ffd63 | 502 | unsigned char *src; |
dbb410c3 AM |
503 | Elf_Internal_Group *dest; |
504 | ||
505 | /* Add to list of sections. */ | |
506 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
507 | num_group += 1; | |
508 | ||
509 | /* Read the raw contents. */ | |
510 | BFD_ASSERT (sizeof (*dest) >= 4); | |
511 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
512 | shdr->contents = bfd_alloc (abfd, amt); | |
513 | if (shdr->contents == NULL | |
514 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
515 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
516 | != shdr->sh_size)) | |
b34976b6 | 517 | return FALSE; |
dbb410c3 AM |
518 | |
519 | /* Translate raw contents, a flag word followed by an | |
520 | array of elf section indices all in target byte order, | |
521 | to the flag word followed by an array of elf section | |
522 | pointers. */ | |
523 | src = shdr->contents + shdr->sh_size; | |
524 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
525 | while (1) | |
526 | { | |
527 | unsigned int idx; | |
528 | ||
529 | src -= 4; | |
530 | --dest; | |
531 | idx = H_GET_32 (abfd, src); | |
532 | if (src == shdr->contents) | |
533 | { | |
534 | dest->flags = idx; | |
b885599b AM |
535 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
536 | shdr->bfd_section->flags | |
537 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
538 | break; |
539 | } | |
540 | if (idx >= shnum) | |
541 | { | |
542 | ((*_bfd_error_handler) | |
d003868e | 543 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
544 | idx = 0; |
545 | } | |
546 | dest->shdr = elf_elfsections (abfd)[idx]; | |
547 | } | |
548 | } | |
549 | } | |
550 | } | |
551 | } | |
552 | ||
553 | if (num_group != (unsigned) -1) | |
554 | { | |
555 | unsigned int i; | |
556 | ||
557 | for (i = 0; i < num_group; i++) | |
558 | { | |
559 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
560 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
561 | unsigned int n_elt = shdr->sh_size / 4; | |
562 | ||
563 | /* Look through this group's sections to see if current | |
564 | section is a member. */ | |
565 | while (--n_elt != 0) | |
566 | if ((++idx)->shdr == hdr) | |
567 | { | |
e0e8c97f | 568 | asection *s = NULL; |
dbb410c3 AM |
569 | |
570 | /* We are a member of this group. Go looking through | |
571 | other members to see if any others are linked via | |
572 | next_in_group. */ | |
573 | idx = (Elf_Internal_Group *) shdr->contents; | |
574 | n_elt = shdr->sh_size / 4; | |
575 | while (--n_elt != 0) | |
576 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 577 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
578 | break; |
579 | if (n_elt != 0) | |
580 | { | |
dbb410c3 AM |
581 | /* Snarf the group name from other member, and |
582 | insert current section in circular list. */ | |
945906ff AM |
583 | elf_group_name (newsect) = elf_group_name (s); |
584 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
585 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
586 | } |
587 | else | |
588 | { | |
dbb410c3 AM |
589 | const char *gname; |
590 | ||
b885599b AM |
591 | gname = group_signature (abfd, shdr); |
592 | if (gname == NULL) | |
b34976b6 | 593 | return FALSE; |
945906ff | 594 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
595 | |
596 | /* Start a circular list with one element. */ | |
945906ff | 597 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 598 | } |
b885599b | 599 | |
9dce4196 AM |
600 | /* If the group section has been created, point to the |
601 | new member. */ | |
dbb410c3 | 602 | if (shdr->bfd_section != NULL) |
945906ff | 603 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 604 | |
dbb410c3 AM |
605 | i = num_group - 1; |
606 | break; | |
607 | } | |
608 | } | |
609 | } | |
610 | ||
945906ff | 611 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 612 | { |
d003868e AM |
613 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
614 | abfd, newsect); | |
dbb410c3 | 615 | } |
b34976b6 | 616 | return TRUE; |
dbb410c3 AM |
617 | } |
618 | ||
3d7f7666 L |
619 | bfd_boolean |
620 | _bfd_elf_setup_group_pointers (bfd *abfd) | |
621 | { | |
622 | unsigned int i; | |
623 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
624 | bfd_boolean result = TRUE; | |
625 | ||
626 | if (num_group == (unsigned) -1) | |
627 | return result; | |
628 | ||
629 | for (i = 0; i < num_group; i++) | |
630 | { | |
631 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
632 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
633 | unsigned int n_elt = shdr->sh_size / 4; | |
634 | ||
635 | while (--n_elt != 0) | |
636 | if ((++idx)->shdr->bfd_section) | |
637 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
638 | else if (idx->shdr->sh_type == SHT_RELA | |
639 | || idx->shdr->sh_type == SHT_REL) | |
640 | /* We won't include relocation sections in section groups in | |
641 | output object files. We adjust the group section size here | |
642 | so that relocatable link will work correctly when | |
643 | relocation sections are in section group in input object | |
644 | files. */ | |
645 | shdr->bfd_section->size -= 4; | |
646 | else | |
647 | { | |
648 | /* There are some unknown sections in the group. */ | |
649 | (*_bfd_error_handler) | |
d003868e AM |
650 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
651 | abfd, | |
3d7f7666 | 652 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
653 | bfd_elf_string_from_elf_section (abfd, |
654 | (elf_elfheader (abfd) | |
655 | ->e_shstrndx), | |
656 | idx->shdr->sh_name), | |
3d7f7666 L |
657 | shdr->bfd_section->name); |
658 | result = FALSE; | |
659 | } | |
660 | } | |
661 | return result; | |
662 | } | |
663 | ||
72adc230 AM |
664 | bfd_boolean |
665 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
666 | { | |
667 | return elf_next_in_group (sec) != NULL; | |
668 | } | |
669 | ||
252b5132 RH |
670 | /* Make a BFD section from an ELF section. We store a pointer to the |
671 | BFD section in the bfd_section field of the header. */ | |
672 | ||
b34976b6 | 673 | bfd_boolean |
217aa764 AM |
674 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
675 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
676 | const char *name, |
677 | int shindex) | |
252b5132 RH |
678 | { |
679 | asection *newsect; | |
680 | flagword flags; | |
9c5bfbb7 | 681 | const struct elf_backend_data *bed; |
252b5132 RH |
682 | |
683 | if (hdr->bfd_section != NULL) | |
684 | { | |
685 | BFD_ASSERT (strcmp (name, | |
686 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 687 | return TRUE; |
252b5132 RH |
688 | } |
689 | ||
690 | newsect = bfd_make_section_anyway (abfd, name); | |
691 | if (newsect == NULL) | |
b34976b6 | 692 | return FALSE; |
252b5132 | 693 | |
1829f4b2 AM |
694 | hdr->bfd_section = newsect; |
695 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 696 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 697 | |
2f89ff8d L |
698 | /* Always use the real type/flags. */ |
699 | elf_section_type (newsect) = hdr->sh_type; | |
700 | elf_section_flags (newsect) = hdr->sh_flags; | |
701 | ||
252b5132 RH |
702 | newsect->filepos = hdr->sh_offset; |
703 | ||
704 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
705 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
706 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 707 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 708 | return FALSE; |
252b5132 RH |
709 | |
710 | flags = SEC_NO_FLAGS; | |
711 | if (hdr->sh_type != SHT_NOBITS) | |
712 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 713 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 714 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
715 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
716 | { | |
717 | flags |= SEC_ALLOC; | |
718 | if (hdr->sh_type != SHT_NOBITS) | |
719 | flags |= SEC_LOAD; | |
720 | } | |
721 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
722 | flags |= SEC_READONLY; | |
723 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
724 | flags |= SEC_CODE; | |
725 | else if ((flags & SEC_LOAD) != 0) | |
726 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
727 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
728 | { | |
729 | flags |= SEC_MERGE; | |
730 | newsect->entsize = hdr->sh_entsize; | |
731 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
732 | flags |= SEC_STRINGS; | |
733 | } | |
dbb410c3 AM |
734 | if (hdr->sh_flags & SHF_GROUP) |
735 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 736 | return FALSE; |
13ae64f3 JJ |
737 | if ((hdr->sh_flags & SHF_TLS) != 0) |
738 | flags |= SEC_THREAD_LOCAL; | |
252b5132 RH |
739 | |
740 | /* The debugging sections appear to be recognized only by name, not | |
741 | any sort of flag. */ | |
7a6cc5fb | 742 | { |
dbf48117 | 743 | static const char *debug_sec_names [] = |
7a6cc5fb NC |
744 | { |
745 | ".debug", | |
746 | ".gnu.linkonce.wi.", | |
747 | ".line", | |
748 | ".stab" | |
749 | }; | |
750 | int i; | |
751 | ||
e0e8c97f | 752 | for (i = ARRAY_SIZE (debug_sec_names); i--;) |
7a6cc5fb NC |
753 | if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0) |
754 | break; | |
755 | ||
756 | if (i >= 0) | |
757 | flags |= SEC_DEBUGGING; | |
758 | } | |
252b5132 RH |
759 | |
760 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
761 | only link a single copy of the section. This is used to support | |
762 | g++. g++ will emit each template expansion in its own section. | |
763 | The symbols will be defined as weak, so that multiple definitions | |
764 | are permitted. The GNU linker extension is to actually discard | |
765 | all but one of the sections. */ | |
b885599b AM |
766 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
767 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
768 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
769 | ||
fa152c49 JW |
770 | bed = get_elf_backend_data (abfd); |
771 | if (bed->elf_backend_section_flags) | |
772 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 773 | return FALSE; |
fa152c49 | 774 | |
252b5132 | 775 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 776 | return FALSE; |
252b5132 RH |
777 | |
778 | if ((flags & SEC_ALLOC) != 0) | |
779 | { | |
780 | Elf_Internal_Phdr *phdr; | |
781 | unsigned int i; | |
782 | ||
783 | /* Look through the phdrs to see if we need to adjust the lma. | |
784 | If all the p_paddr fields are zero, we ignore them, since | |
785 | some ELF linkers produce such output. */ | |
786 | phdr = elf_tdata (abfd)->phdr; | |
787 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
788 | { | |
789 | if (phdr->p_paddr != 0) | |
790 | break; | |
791 | } | |
792 | if (i < elf_elfheader (abfd)->e_phnum) | |
793 | { | |
794 | phdr = elf_tdata (abfd)->phdr; | |
795 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
796 | { | |
e0e8c97f NC |
797 | /* This section is part of this segment if its file |
798 | offset plus size lies within the segment's memory | |
799 | span and, if the section is loaded, the extent of the | |
47d9a591 | 800 | loaded data lies within the extent of the segment. |
bf36db18 NC |
801 | |
802 | Note - we used to check the p_paddr field as well, and | |
803 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 804 | though, as a perfectly valid initialised segment can |
bf36db18 | 805 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 806 | place special significance on the address 0 and |
bf36db18 NC |
807 | executables need to be able to have a segment which |
808 | covers this address. */ | |
252b5132 | 809 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
810 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
811 | && (hdr->sh_offset + hdr->sh_size | |
812 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 813 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
814 | || (hdr->sh_offset + hdr->sh_size |
815 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 816 | { |
dba143ef | 817 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
818 | newsect->lma = (phdr->p_paddr |
819 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
820 | else |
821 | /* We used to use the same adjustment for SEC_LOAD | |
822 | sections, but that doesn't work if the segment | |
823 | is packed with code from multiple VMAs. | |
824 | Instead we calculate the section LMA based on | |
825 | the segment LMA. It is assumed that the | |
826 | segment will contain sections with contiguous | |
827 | LMAs, even if the VMAs are not. */ | |
828 | newsect->lma = (phdr->p_paddr | |
829 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
830 | |
831 | /* With contiguous segments, we can't tell from file | |
832 | offsets whether a section with zero size should | |
833 | be placed at the end of one segment or the | |
834 | beginning of the next. Decide based on vaddr. */ | |
835 | if (hdr->sh_addr >= phdr->p_vaddr | |
836 | && (hdr->sh_addr + hdr->sh_size | |
837 | <= phdr->p_vaddr + phdr->p_memsz)) | |
838 | break; | |
252b5132 RH |
839 | } |
840 | } | |
841 | } | |
842 | } | |
843 | ||
b34976b6 | 844 | return TRUE; |
252b5132 RH |
845 | } |
846 | ||
847 | /* | |
848 | INTERNAL_FUNCTION | |
849 | bfd_elf_find_section | |
850 | ||
851 | SYNOPSIS | |
852 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
853 | ||
854 | DESCRIPTION | |
855 | Helper functions for GDB to locate the string tables. | |
856 | Since BFD hides string tables from callers, GDB needs to use an | |
857 | internal hook to find them. Sun's .stabstr, in particular, | |
858 | isn't even pointed to by the .stab section, so ordinary | |
859 | mechanisms wouldn't work to find it, even if we had some. | |
860 | */ | |
861 | ||
862 | struct elf_internal_shdr * | |
217aa764 | 863 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
864 | { |
865 | Elf_Internal_Shdr **i_shdrp; | |
866 | char *shstrtab; | |
867 | unsigned int max; | |
868 | unsigned int i; | |
869 | ||
870 | i_shdrp = elf_elfsections (abfd); | |
871 | if (i_shdrp != NULL) | |
872 | { | |
9ad5cbcf AM |
873 | shstrtab = bfd_elf_get_str_section (abfd, |
874 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
875 | if (shstrtab != NULL) |
876 | { | |
9ad5cbcf | 877 | max = elf_numsections (abfd); |
252b5132 RH |
878 | for (i = 1; i < max; i++) |
879 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
880 | return i_shdrp[i]; | |
881 | } | |
882 | } | |
883 | return 0; | |
884 | } | |
885 | ||
886 | const char *const bfd_elf_section_type_names[] = { | |
887 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
888 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
889 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
890 | }; | |
891 | ||
1049f94e | 892 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
893 | output, and the reloc is against an external symbol, and nothing |
894 | has given us any additional addend, the resulting reloc will also | |
895 | be against the same symbol. In such a case, we don't want to | |
896 | change anything about the way the reloc is handled, since it will | |
897 | all be done at final link time. Rather than put special case code | |
898 | into bfd_perform_relocation, all the reloc types use this howto | |
899 | function. It just short circuits the reloc if producing | |
1049f94e | 900 | relocatable output against an external symbol. */ |
252b5132 | 901 | |
252b5132 | 902 | bfd_reloc_status_type |
217aa764 AM |
903 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
904 | arelent *reloc_entry, | |
905 | asymbol *symbol, | |
906 | void *data ATTRIBUTE_UNUSED, | |
907 | asection *input_section, | |
908 | bfd *output_bfd, | |
909 | char **error_message ATTRIBUTE_UNUSED) | |
910 | { | |
911 | if (output_bfd != NULL | |
252b5132 RH |
912 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
913 | && (! reloc_entry->howto->partial_inplace | |
914 | || reloc_entry->addend == 0)) | |
915 | { | |
916 | reloc_entry->address += input_section->output_offset; | |
917 | return bfd_reloc_ok; | |
918 | } | |
919 | ||
920 | return bfd_reloc_continue; | |
921 | } | |
922 | \f | |
d3c456e9 JJ |
923 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
924 | ||
925 | static void | |
217aa764 AM |
926 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
927 | asection *sec) | |
d3c456e9 | 928 | { |
68bfbfcc AM |
929 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
930 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
931 | } |
932 | ||
8550eb6e JJ |
933 | /* Finish SHF_MERGE section merging. */ |
934 | ||
b34976b6 | 935 | bfd_boolean |
217aa764 | 936 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 937 | { |
57ceae94 AM |
938 | bfd *ibfd; |
939 | asection *sec; | |
940 | ||
0eddce27 | 941 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 942 | return FALSE; |
57ceae94 AM |
943 | |
944 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
945 | if ((ibfd->flags & DYNAMIC) == 0) | |
946 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
947 | if ((sec->flags & SEC_MERGE) != 0 | |
948 | && !bfd_is_abs_section (sec->output_section)) | |
949 | { | |
950 | struct bfd_elf_section_data *secdata; | |
951 | ||
952 | secdata = elf_section_data (sec); | |
953 | if (! _bfd_add_merge_section (abfd, | |
954 | &elf_hash_table (info)->merge_info, | |
955 | sec, &secdata->sec_info)) | |
956 | return FALSE; | |
957 | else if (secdata->sec_info) | |
958 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
959 | } | |
960 | ||
961 | if (elf_hash_table (info)->merge_info != NULL) | |
962 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 963 | merge_sections_remove_hook); |
b34976b6 | 964 | return TRUE; |
8550eb6e | 965 | } |
2d653fc7 AM |
966 | |
967 | void | |
217aa764 | 968 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
969 | { |
970 | sec->output_section = bfd_abs_section_ptr; | |
971 | sec->output_offset = sec->vma; | |
0eddce27 | 972 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
973 | return; |
974 | ||
68bfbfcc | 975 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 976 | } |
8550eb6e | 977 | \f |
0ac4564e L |
978 | /* Copy the program header and other data from one object module to |
979 | another. */ | |
252b5132 | 980 | |
b34976b6 | 981 | bfd_boolean |
217aa764 | 982 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
983 | { |
984 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
985 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 986 | return TRUE; |
2d502050 L |
987 | |
988 | BFD_ASSERT (!elf_flags_init (obfd) | |
989 | || (elf_elfheader (obfd)->e_flags | |
990 | == elf_elfheader (ibfd)->e_flags)); | |
991 | ||
0ac4564e | 992 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 993 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
994 | elf_flags_init (obfd) = TRUE; |
995 | return TRUE; | |
2d502050 L |
996 | } |
997 | ||
f0b79d91 L |
998 | /* Print out the program headers. */ |
999 | ||
b34976b6 | 1000 | bfd_boolean |
217aa764 | 1001 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1002 | { |
217aa764 | 1003 | FILE *f = farg; |
252b5132 RH |
1004 | Elf_Internal_Phdr *p; |
1005 | asection *s; | |
1006 | bfd_byte *dynbuf = NULL; | |
1007 | ||
1008 | p = elf_tdata (abfd)->phdr; | |
1009 | if (p != NULL) | |
1010 | { | |
1011 | unsigned int i, c; | |
1012 | ||
1013 | fprintf (f, _("\nProgram Header:\n")); | |
1014 | c = elf_elfheader (abfd)->e_phnum; | |
1015 | for (i = 0; i < c; i++, p++) | |
1016 | { | |
dc810e39 | 1017 | const char *pt; |
252b5132 RH |
1018 | char buf[20]; |
1019 | ||
1020 | switch (p->p_type) | |
1021 | { | |
dc810e39 AM |
1022 | case PT_NULL: pt = "NULL"; break; |
1023 | case PT_LOAD: pt = "LOAD"; break; | |
1024 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1025 | case PT_INTERP: pt = "INTERP"; break; | |
1026 | case PT_NOTE: pt = "NOTE"; break; | |
1027 | case PT_SHLIB: pt = "SHLIB"; break; | |
1028 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 1029 | case PT_TLS: pt = "TLS"; break; |
65765700 | 1030 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 1031 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 1032 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 1033 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 1034 | } |
dc810e39 | 1035 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1036 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1037 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1038 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1039 | fprintf (f, " paddr 0x"); |
60b89a18 | 1040 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1041 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1042 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1043 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1044 | fprintf (f, " memsz 0x"); |
60b89a18 | 1045 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1046 | fprintf (f, " flags %c%c%c", |
1047 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1048 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1049 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1050 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1051 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1052 | fprintf (f, "\n"); |
1053 | } | |
1054 | } | |
1055 | ||
1056 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1057 | if (s != NULL) | |
1058 | { | |
1059 | int elfsec; | |
dc810e39 | 1060 | unsigned long shlink; |
252b5132 RH |
1061 | bfd_byte *extdyn, *extdynend; |
1062 | size_t extdynsize; | |
217aa764 | 1063 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1064 | |
1065 | fprintf (f, _("\nDynamic Section:\n")); | |
1066 | ||
eea6121a | 1067 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1068 | goto error_return; |
1069 | ||
1070 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1071 | if (elfsec == -1) | |
1072 | goto error_return; | |
dc810e39 | 1073 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1074 | |
1075 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1076 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1077 | ||
1078 | extdyn = dynbuf; | |
eea6121a | 1079 | extdynend = extdyn + s->size; |
252b5132 RH |
1080 | for (; extdyn < extdynend; extdyn += extdynsize) |
1081 | { | |
1082 | Elf_Internal_Dyn dyn; | |
1083 | const char *name; | |
1084 | char ab[20]; | |
b34976b6 | 1085 | bfd_boolean stringp; |
252b5132 | 1086 | |
217aa764 | 1087 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1088 | |
1089 | if (dyn.d_tag == DT_NULL) | |
1090 | break; | |
1091 | ||
b34976b6 | 1092 | stringp = FALSE; |
252b5132 RH |
1093 | switch (dyn.d_tag) |
1094 | { | |
1095 | default: | |
1096 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1097 | name = ab; | |
1098 | break; | |
1099 | ||
b34976b6 | 1100 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1101 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1102 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1103 | case DT_HASH: name = "HASH"; break; | |
1104 | case DT_STRTAB: name = "STRTAB"; break; | |
1105 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1106 | case DT_RELA: name = "RELA"; break; | |
1107 | case DT_RELASZ: name = "RELASZ"; break; | |
1108 | case DT_RELAENT: name = "RELAENT"; break; | |
1109 | case DT_STRSZ: name = "STRSZ"; break; | |
1110 | case DT_SYMENT: name = "SYMENT"; break; | |
1111 | case DT_INIT: name = "INIT"; break; | |
1112 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1113 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1114 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1115 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1116 | case DT_REL: name = "REL"; break; | |
1117 | case DT_RELSZ: name = "RELSZ"; break; | |
1118 | case DT_RELENT: name = "RELENT"; break; | |
1119 | case DT_PLTREL: name = "PLTREL"; break; | |
1120 | case DT_DEBUG: name = "DEBUG"; break; | |
1121 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1122 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1123 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1124 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1125 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1126 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1127 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1128 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1129 | case DT_FLAGS: name = "FLAGS"; break; |
1130 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1131 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1132 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1133 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1134 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1135 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1136 | case DT_FEATURE: name = "FEATURE"; break; | |
1137 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1138 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1139 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1140 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1141 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1142 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1143 | case DT_PLTPAD: name = "PLTPAD"; break; |
1144 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1145 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1146 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1147 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1148 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1149 | case DT_VERSYM: name = "VERSYM"; break; |
1150 | case DT_VERDEF: name = "VERDEF"; break; | |
1151 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1152 | case DT_VERNEED: name = "VERNEED"; break; | |
1153 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1154 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1155 | case DT_USED: name = "USED"; break; |
b34976b6 | 1156 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1157 | } |
1158 | ||
1159 | fprintf (f, " %-11s ", name); | |
1160 | if (! stringp) | |
1161 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1162 | else | |
1163 | { | |
1164 | const char *string; | |
dc810e39 | 1165 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1166 | |
dc810e39 | 1167 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1168 | if (string == NULL) |
1169 | goto error_return; | |
1170 | fprintf (f, "%s", string); | |
1171 | } | |
1172 | fprintf (f, "\n"); | |
1173 | } | |
1174 | ||
1175 | free (dynbuf); | |
1176 | dynbuf = NULL; | |
1177 | } | |
1178 | ||
1179 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1180 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1181 | { | |
fc0e6df6 | 1182 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1183 | return FALSE; |
252b5132 RH |
1184 | } |
1185 | ||
1186 | if (elf_dynverdef (abfd) != 0) | |
1187 | { | |
1188 | Elf_Internal_Verdef *t; | |
1189 | ||
1190 | fprintf (f, _("\nVersion definitions:\n")); | |
1191 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1192 | { | |
1193 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
1194 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
1195 | if (t->vd_auxptr->vda_nextptr != NULL) | |
1196 | { | |
1197 | Elf_Internal_Verdaux *a; | |
1198 | ||
1199 | fprintf (f, "\t"); | |
1200 | for (a = t->vd_auxptr->vda_nextptr; | |
1201 | a != NULL; | |
1202 | a = a->vda_nextptr) | |
1203 | fprintf (f, "%s ", a->vda_nodename); | |
1204 | fprintf (f, "\n"); | |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | if (elf_dynverref (abfd) != 0) | |
1210 | { | |
1211 | Elf_Internal_Verneed *t; | |
1212 | ||
1213 | fprintf (f, _("\nVersion References:\n")); | |
1214 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1215 | { | |
1216 | Elf_Internal_Vernaux *a; | |
1217 | ||
1218 | fprintf (f, _(" required from %s:\n"), t->vn_filename); | |
1219 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1220 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
1221 | a->vna_flags, a->vna_other, a->vna_nodename); | |
1222 | } | |
1223 | } | |
1224 | ||
b34976b6 | 1225 | return TRUE; |
252b5132 RH |
1226 | |
1227 | error_return: | |
1228 | if (dynbuf != NULL) | |
1229 | free (dynbuf); | |
b34976b6 | 1230 | return FALSE; |
252b5132 RH |
1231 | } |
1232 | ||
1233 | /* Display ELF-specific fields of a symbol. */ | |
1234 | ||
1235 | void | |
217aa764 AM |
1236 | bfd_elf_print_symbol (bfd *abfd, |
1237 | void *filep, | |
1238 | asymbol *symbol, | |
1239 | bfd_print_symbol_type how) | |
252b5132 | 1240 | { |
217aa764 | 1241 | FILE *file = filep; |
252b5132 RH |
1242 | switch (how) |
1243 | { | |
1244 | case bfd_print_symbol_name: | |
1245 | fprintf (file, "%s", symbol->name); | |
1246 | break; | |
1247 | case bfd_print_symbol_more: | |
1248 | fprintf (file, "elf "); | |
60b89a18 | 1249 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1250 | fprintf (file, " %lx", (long) symbol->flags); |
1251 | break; | |
1252 | case bfd_print_symbol_all: | |
1253 | { | |
4e8a9624 AM |
1254 | const char *section_name; |
1255 | const char *name = NULL; | |
9c5bfbb7 | 1256 | const struct elf_backend_data *bed; |
7a13edea | 1257 | unsigned char st_other; |
dbb410c3 | 1258 | bfd_vma val; |
c044fabd | 1259 | |
252b5132 | 1260 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1261 | |
1262 | bed = get_elf_backend_data (abfd); | |
1263 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1264 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1265 | |
1266 | if (name == NULL) | |
1267 | { | |
7ee38065 | 1268 | name = symbol->name; |
217aa764 | 1269 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1270 | } |
1271 | ||
252b5132 RH |
1272 | fprintf (file, " %s\t", section_name); |
1273 | /* Print the "other" value for a symbol. For common symbols, | |
1274 | we've already printed the size; now print the alignment. | |
1275 | For other symbols, we have no specified alignment, and | |
1276 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1277 | if (bfd_is_com_section (symbol->section)) |
1278 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1279 | else | |
1280 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1281 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1282 | |
1283 | /* If we have version information, print it. */ | |
1284 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1285 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1286 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1287 | { | |
1288 | unsigned int vernum; | |
1289 | const char *version_string; | |
1290 | ||
1291 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1292 | ||
1293 | if (vernum == 0) | |
1294 | version_string = ""; | |
1295 | else if (vernum == 1) | |
1296 | version_string = "Base"; | |
1297 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1298 | version_string = | |
1299 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1300 | else | |
1301 | { | |
1302 | Elf_Internal_Verneed *t; | |
1303 | ||
1304 | version_string = ""; | |
1305 | for (t = elf_tdata (abfd)->verref; | |
1306 | t != NULL; | |
1307 | t = t->vn_nextref) | |
1308 | { | |
1309 | Elf_Internal_Vernaux *a; | |
1310 | ||
1311 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1312 | { | |
1313 | if (a->vna_other == vernum) | |
1314 | { | |
1315 | version_string = a->vna_nodename; | |
1316 | break; | |
1317 | } | |
1318 | } | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1323 | fprintf (file, " %-11s", version_string); | |
1324 | else | |
1325 | { | |
1326 | int i; | |
1327 | ||
1328 | fprintf (file, " (%s)", version_string); | |
1329 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1330 | putc (' ', file); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1335 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1336 | |
7a13edea NC |
1337 | switch (st_other) |
1338 | { | |
1339 | case 0: break; | |
1340 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1341 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1342 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1343 | default: | |
1344 | /* Some other non-defined flags are also present, so print | |
1345 | everything hex. */ | |
1346 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1347 | } | |
252b5132 | 1348 | |
587ff49e | 1349 | fprintf (file, " %s", name); |
252b5132 RH |
1350 | } |
1351 | break; | |
1352 | } | |
1353 | } | |
1354 | \f | |
1355 | /* Create an entry in an ELF linker hash table. */ | |
1356 | ||
1357 | struct bfd_hash_entry * | |
217aa764 AM |
1358 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1359 | struct bfd_hash_table *table, | |
1360 | const char *string) | |
252b5132 | 1361 | { |
252b5132 RH |
1362 | /* Allocate the structure if it has not already been allocated by a |
1363 | subclass. */ | |
51b64d56 AM |
1364 | if (entry == NULL) |
1365 | { | |
1366 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1367 | if (entry == NULL) | |
1368 | return entry; | |
1369 | } | |
252b5132 RH |
1370 | |
1371 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1372 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1373 | if (entry != NULL) | |
252b5132 | 1374 | { |
51b64d56 AM |
1375 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1376 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1377 | ||
252b5132 RH |
1378 | /* Set local fields. */ |
1379 | ret->indx = -1; | |
252b5132 | 1380 | ret->dynindx = -1; |
f6e332e6 AM |
1381 | ret->got = ret->plt = htab->init_refcount; |
1382 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) | |
1383 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1384 | /* Assume that we have been called by a non-ELF symbol reader. |
1385 | This flag is then reset by the code which reads an ELF input | |
1386 | file. This ensures that a symbol created by a non-ELF symbol | |
1387 | reader will have the flag set correctly. */ | |
f5385ebf | 1388 | ret->non_elf = 1; |
252b5132 RH |
1389 | } |
1390 | ||
51b64d56 | 1391 | return entry; |
252b5132 RH |
1392 | } |
1393 | ||
2920b85c | 1394 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1395 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1396 | |
c61b8717 | 1397 | void |
9c5bfbb7 | 1398 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1399 | struct elf_link_hash_entry *dir, |
1400 | struct elf_link_hash_entry *ind) | |
2920b85c | 1401 | { |
3c3e9281 | 1402 | bfd_signed_vma tmp; |
b48fa14c | 1403 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1404 | |
2920b85c RH |
1405 | /* Copy down any references that we may have already seen to the |
1406 | symbol which just became indirect. */ | |
1407 | ||
f5385ebf AM |
1408 | dir->ref_dynamic |= ind->ref_dynamic; |
1409 | dir->ref_regular |= ind->ref_regular; | |
1410 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1411 | dir->non_got_ref |= ind->non_got_ref; | |
1412 | dir->needs_plt |= ind->needs_plt; | |
1413 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1414 | |
1e370bd2 | 1415 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1416 | return; |
1417 | ||
51b64d56 | 1418 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1419 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1420 | tmp = dir->got.refcount; |
b48fa14c | 1421 | if (tmp < lowest_valid) |
2920b85c | 1422 | { |
51b64d56 | 1423 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1424 | ind->got.refcount = tmp; |
2920b85c | 1425 | } |
3c3e9281 | 1426 | else |
b48fa14c | 1427 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1428 | |
3c3e9281 | 1429 | tmp = dir->plt.refcount; |
b48fa14c | 1430 | if (tmp < lowest_valid) |
2920b85c | 1431 | { |
51b64d56 | 1432 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1433 | ind->plt.refcount = tmp; |
2920b85c | 1434 | } |
3c3e9281 | 1435 | else |
b48fa14c | 1436 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1437 | |
1438 | if (dir->dynindx == -1) | |
1439 | { | |
1440 | dir->dynindx = ind->dynindx; | |
1441 | dir->dynstr_index = ind->dynstr_index; | |
1442 | ind->dynindx = -1; | |
1443 | ind->dynstr_index = 0; | |
1444 | } | |
3c3e9281 AM |
1445 | else |
1446 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1447 | } |
1448 | ||
c61b8717 | 1449 | void |
217aa764 AM |
1450 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1451 | struct elf_link_hash_entry *h, | |
1452 | bfd_boolean force_local) | |
2920b85c | 1453 | { |
5cab59f6 | 1454 | h->plt = elf_hash_table (info)->init_offset; |
f5385ebf | 1455 | h->needs_plt = 0; |
e5094212 AM |
1456 | if (force_local) |
1457 | { | |
f5385ebf | 1458 | h->forced_local = 1; |
e5094212 AM |
1459 | if (h->dynindx != -1) |
1460 | { | |
1461 | h->dynindx = -1; | |
1462 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1463 | h->dynstr_index); | |
1464 | } | |
1465 | } | |
2920b85c RH |
1466 | } |
1467 | ||
252b5132 RH |
1468 | /* Initialize an ELF linker hash table. */ |
1469 | ||
b34976b6 | 1470 | bfd_boolean |
217aa764 AM |
1471 | _bfd_elf_link_hash_table_init |
1472 | (struct elf_link_hash_table *table, | |
1473 | bfd *abfd, | |
1474 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1475 | struct bfd_hash_table *, | |
1476 | const char *)) | |
252b5132 | 1477 | { |
b34976b6 | 1478 | bfd_boolean ret; |
8ea2e4bd | 1479 | |
b34976b6 | 1480 | table->dynamic_sections_created = FALSE; |
252b5132 | 1481 | table->dynobj = NULL; |
963f13ec AO |
1482 | /* Make sure can_refcount is extended to the width and signedness of |
1483 | init_refcount before we subtract one from it. */ | |
5cab59f6 AM |
1484 | table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; |
1485 | table->init_refcount.refcount -= 1; | |
1486 | table->init_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1487 | /* The first dynamic symbol is a dummy. */ |
1488 | table->dynsymcount = 1; | |
1489 | table->dynstr = NULL; | |
1490 | table->bucketcount = 0; | |
1491 | table->needed = NULL; | |
1492 | table->hgot = NULL; | |
f5fa8ca2 | 1493 | table->merge_info = NULL; |
3722b82f | 1494 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1495 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1496 | table->dynlocal = NULL; |
73722af0 | 1497 | table->runpath = NULL; |
e1918d23 AM |
1498 | table->tls_sec = NULL; |
1499 | table->tls_size = 0; | |
73722af0 | 1500 | table->loaded = NULL; |
67687978 | 1501 | table->is_relocatable_executable = FALSE; |
73722af0 AM |
1502 | |
1503 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1504 | table->root.type = bfd_link_elf_hash_table; |
1505 | ||
1506 | return ret; | |
252b5132 RH |
1507 | } |
1508 | ||
1509 | /* Create an ELF linker hash table. */ | |
1510 | ||
1511 | struct bfd_link_hash_table * | |
217aa764 | 1512 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1513 | { |
1514 | struct elf_link_hash_table *ret; | |
dc810e39 | 1515 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1516 | |
217aa764 AM |
1517 | ret = bfd_malloc (amt); |
1518 | if (ret == NULL) | |
252b5132 RH |
1519 | return NULL; |
1520 | ||
1521 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1522 | { | |
e2d34d7d | 1523 | free (ret); |
252b5132 RH |
1524 | return NULL; |
1525 | } | |
1526 | ||
1527 | return &ret->root; | |
1528 | } | |
1529 | ||
1530 | /* This is a hook for the ELF emulation code in the generic linker to | |
1531 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1532 | entry for a dynamic object. */ |
252b5132 RH |
1533 | |
1534 | void | |
217aa764 | 1535 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1536 | { |
1537 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1538 | && bfd_get_format (abfd) == bfd_object) | |
1539 | elf_dt_name (abfd) = name; | |
1540 | } | |
1541 | ||
e56f61be L |
1542 | int |
1543 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1544 | { | |
1545 | int lib_class; | |
1546 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1547 | && bfd_get_format (abfd) == bfd_object) | |
1548 | lib_class = elf_dyn_lib_class (abfd); | |
1549 | else | |
1550 | lib_class = 0; | |
1551 | return lib_class; | |
1552 | } | |
1553 | ||
74816898 | 1554 | void |
4a43e768 | 1555 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1556 | { |
1557 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1558 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1559 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1560 | } |
1561 | ||
252b5132 RH |
1562 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1563 | the linker ELF emulation code. */ | |
1564 | ||
1565 | struct bfd_link_needed_list * | |
217aa764 AM |
1566 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1567 | struct bfd_link_info *info) | |
252b5132 | 1568 | { |
0eddce27 | 1569 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1570 | return NULL; |
1571 | return elf_hash_table (info)->needed; | |
1572 | } | |
1573 | ||
a963dc6a L |
1574 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1575 | hook for the linker ELF emulation code. */ | |
1576 | ||
1577 | struct bfd_link_needed_list * | |
217aa764 AM |
1578 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1579 | struct bfd_link_info *info) | |
a963dc6a | 1580 | { |
0eddce27 | 1581 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1582 | return NULL; |
1583 | return elf_hash_table (info)->runpath; | |
1584 | } | |
1585 | ||
252b5132 RH |
1586 | /* Get the name actually used for a dynamic object for a link. This |
1587 | is the SONAME entry if there is one. Otherwise, it is the string | |
1588 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1589 | ||
1590 | const char * | |
217aa764 | 1591 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1592 | { |
1593 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1594 | && bfd_get_format (abfd) == bfd_object) | |
1595 | return elf_dt_name (abfd); | |
1596 | return NULL; | |
1597 | } | |
1598 | ||
1599 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1600 | the ELF linker emulation code. */ | |
1601 | ||
b34976b6 | 1602 | bfd_boolean |
217aa764 AM |
1603 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1604 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1605 | { |
1606 | asection *s; | |
1607 | bfd_byte *dynbuf = NULL; | |
1608 | int elfsec; | |
dc810e39 | 1609 | unsigned long shlink; |
252b5132 RH |
1610 | bfd_byte *extdyn, *extdynend; |
1611 | size_t extdynsize; | |
217aa764 | 1612 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1613 | |
1614 | *pneeded = NULL; | |
1615 | ||
1616 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1617 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1618 | return TRUE; |
252b5132 RH |
1619 | |
1620 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1621 | if (s == NULL || s->size == 0) |
b34976b6 | 1622 | return TRUE; |
252b5132 | 1623 | |
eea6121a | 1624 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1625 | goto error_return; |
1626 | ||
1627 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1628 | if (elfsec == -1) | |
1629 | goto error_return; | |
1630 | ||
dc810e39 | 1631 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1632 | |
1633 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1634 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1635 | ||
1636 | extdyn = dynbuf; | |
eea6121a | 1637 | extdynend = extdyn + s->size; |
252b5132 RH |
1638 | for (; extdyn < extdynend; extdyn += extdynsize) |
1639 | { | |
1640 | Elf_Internal_Dyn dyn; | |
1641 | ||
217aa764 | 1642 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1643 | |
1644 | if (dyn.d_tag == DT_NULL) | |
1645 | break; | |
1646 | ||
1647 | if (dyn.d_tag == DT_NEEDED) | |
1648 | { | |
1649 | const char *string; | |
1650 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1651 | unsigned int tagv = dyn.d_un.d_val; |
1652 | bfd_size_type amt; | |
252b5132 | 1653 | |
dc810e39 | 1654 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1655 | if (string == NULL) |
1656 | goto error_return; | |
1657 | ||
dc810e39 | 1658 | amt = sizeof *l; |
217aa764 | 1659 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1660 | if (l == NULL) |
1661 | goto error_return; | |
1662 | ||
1663 | l->by = abfd; | |
1664 | l->name = string; | |
1665 | l->next = *pneeded; | |
1666 | *pneeded = l; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | free (dynbuf); | |
1671 | ||
b34976b6 | 1672 | return TRUE; |
252b5132 RH |
1673 | |
1674 | error_return: | |
1675 | if (dynbuf != NULL) | |
1676 | free (dynbuf); | |
b34976b6 | 1677 | return FALSE; |
252b5132 RH |
1678 | } |
1679 | \f | |
1680 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1681 | ||
1682 | struct bfd_strtab_hash * | |
217aa764 | 1683 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1684 | { |
1685 | struct bfd_strtab_hash *ret; | |
1686 | ||
1687 | ret = _bfd_stringtab_init (); | |
1688 | if (ret != NULL) | |
1689 | { | |
1690 | bfd_size_type loc; | |
1691 | ||
b34976b6 | 1692 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1693 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1694 | if (loc == (bfd_size_type) -1) | |
1695 | { | |
1696 | _bfd_stringtab_free (ret); | |
1697 | ret = NULL; | |
1698 | } | |
1699 | } | |
1700 | return ret; | |
1701 | } | |
1702 | \f | |
1703 | /* ELF .o/exec file reading */ | |
1704 | ||
c044fabd | 1705 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1706 | |
b34976b6 | 1707 | bfd_boolean |
217aa764 | 1708 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1709 | { |
1710 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1711 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1712 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1713 | const char *name; |
252b5132 | 1714 | |
1b3a8575 AM |
1715 | name = bfd_elf_string_from_elf_section (abfd, |
1716 | elf_elfheader (abfd)->e_shstrndx, | |
1717 | hdr->sh_name); | |
252b5132 RH |
1718 | |
1719 | switch (hdr->sh_type) | |
1720 | { | |
1721 | case SHT_NULL: | |
1722 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1723 | return TRUE; |
252b5132 RH |
1724 | |
1725 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1726 | case SHT_NOBITS: /* .bss section. */ |
1727 | case SHT_HASH: /* .hash section. */ | |
1728 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1729 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1730 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1731 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1732 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
6dc132d9 | 1733 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1734 | |
797fc050 | 1735 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1736 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1737 | return FALSE; |
797fc050 AM |
1738 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1739 | { | |
1740 | Elf_Internal_Shdr *dynsymhdr; | |
1741 | ||
1742 | /* The shared libraries distributed with hpux11 have a bogus | |
1743 | sh_link field for the ".dynamic" section. Find the | |
1744 | string table for the ".dynsym" section instead. */ | |
1745 | if (elf_dynsymtab (abfd) != 0) | |
1746 | { | |
1747 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1748 | hdr->sh_link = dynsymhdr->sh_link; | |
1749 | } | |
1750 | else | |
1751 | { | |
1752 | unsigned int i, num_sec; | |
1753 | ||
1754 | num_sec = elf_numsections (abfd); | |
1755 | for (i = 1; i < num_sec; i++) | |
1756 | { | |
1757 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1758 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1759 | { | |
1760 | hdr->sh_link = dynsymhdr->sh_link; | |
1761 | break; | |
1762 | } | |
1763 | } | |
1764 | } | |
1765 | } | |
1766 | break; | |
1767 | ||
252b5132 RH |
1768 | case SHT_SYMTAB: /* A symbol table */ |
1769 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1770 | return TRUE; |
252b5132 RH |
1771 | |
1772 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1773 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1774 | elf_onesymtab (abfd) = shindex; | |
1775 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1776 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1777 | abfd->flags |= HAS_SYMS; | |
1778 | ||
1779 | /* Sometimes a shared object will map in the symbol table. If | |
1780 | SHF_ALLOC is set, and this is a shared object, then we also | |
1781 | treat this section as a BFD section. We can not base the | |
1782 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1783 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1784 | linker. */ |
1785 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1786 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1787 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1788 | shindex)) | |
b34976b6 | 1789 | return FALSE; |
252b5132 | 1790 | |
1b3a8575 AM |
1791 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1792 | can't read symbols without that section loaded as well. It | |
1793 | is most likely specified by the next section header. */ | |
1794 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1795 | { | |
1796 | unsigned int i, num_sec; | |
1797 | ||
1798 | num_sec = elf_numsections (abfd); | |
1799 | for (i = shindex + 1; i < num_sec; i++) | |
1800 | { | |
1801 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1802 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1803 | && hdr2->sh_link == shindex) | |
1804 | break; | |
1805 | } | |
1806 | if (i == num_sec) | |
1807 | for (i = 1; i < shindex; i++) | |
1808 | { | |
1809 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1810 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1811 | && hdr2->sh_link == shindex) | |
1812 | break; | |
1813 | } | |
1814 | if (i != shindex) | |
1815 | return bfd_section_from_shdr (abfd, i); | |
1816 | } | |
b34976b6 | 1817 | return TRUE; |
252b5132 RH |
1818 | |
1819 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1820 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1821 | return TRUE; |
252b5132 RH |
1822 | |
1823 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1824 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1825 | elf_dynsymtab (abfd) = shindex; | |
1826 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1827 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1828 | abfd->flags |= HAS_SYMS; | |
1829 | ||
1830 | /* Besides being a symbol table, we also treat this as a regular | |
1831 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1832 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1833 | |
9ad5cbcf AM |
1834 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1835 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1836 | return TRUE; |
9ad5cbcf | 1837 | |
1b3a8575 | 1838 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1839 | elf_symtab_shndx (abfd) = shindex; |
1840 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1841 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1842 | return TRUE; |
9ad5cbcf | 1843 | |
252b5132 RH |
1844 | case SHT_STRTAB: /* A string table */ |
1845 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1846 | return TRUE; |
252b5132 RH |
1847 | if (ehdr->e_shstrndx == shindex) |
1848 | { | |
1849 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1850 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1851 | return TRUE; |
252b5132 | 1852 | } |
1b3a8575 AM |
1853 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1854 | { | |
1855 | symtab_strtab: | |
1856 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1857 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1858 | return TRUE; | |
1859 | } | |
1860 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1861 | { | |
1862 | dynsymtab_strtab: | |
1863 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1864 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1865 | elf_elfsections (abfd)[shindex] = hdr; | |
1866 | /* We also treat this as a regular section, so that objcopy | |
1867 | can handle it. */ | |
6dc132d9 L |
1868 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1869 | shindex); | |
1b3a8575 | 1870 | } |
252b5132 | 1871 | |
1b3a8575 AM |
1872 | /* If the string table isn't one of the above, then treat it as a |
1873 | regular section. We need to scan all the headers to be sure, | |
1874 | just in case this strtab section appeared before the above. */ | |
1875 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1876 | { | |
1877 | unsigned int i, num_sec; | |
252b5132 | 1878 | |
1b3a8575 AM |
1879 | num_sec = elf_numsections (abfd); |
1880 | for (i = 1; i < num_sec; i++) | |
1881 | { | |
1882 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1883 | if (hdr2->sh_link == shindex) | |
1884 | { | |
1885 | if (! bfd_section_from_shdr (abfd, i)) | |
1886 | return FALSE; | |
1887 | if (elf_onesymtab (abfd) == i) | |
1888 | goto symtab_strtab; | |
1889 | if (elf_dynsymtab (abfd) == i) | |
1890 | goto dynsymtab_strtab; | |
1891 | } | |
1892 | } | |
1893 | } | |
6dc132d9 | 1894 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1895 | |
1896 | case SHT_REL: | |
1897 | case SHT_RELA: | |
1898 | /* *These* do a lot of work -- but build no sections! */ | |
1899 | { | |
1900 | asection *target_sect; | |
1901 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1902 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1903 | |
03ae5f59 | 1904 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1905 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1906 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1907 | { |
1908 | ((*_bfd_error_handler) | |
d003868e AM |
1909 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1910 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1911 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1912 | shindex); | |
03ae5f59 ILT |
1913 | } |
1914 | ||
252b5132 RH |
1915 | /* For some incomprehensible reason Oracle distributes |
1916 | libraries for Solaris in which some of the objects have | |
1917 | bogus sh_link fields. It would be nice if we could just | |
1918 | reject them, but, unfortunately, some people need to use | |
1919 | them. We scan through the section headers; if we find only | |
1920 | one suitable symbol table, we clobber the sh_link to point | |
1921 | to it. I hope this doesn't break anything. */ | |
1922 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1923 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1924 | { | |
9ad5cbcf | 1925 | unsigned int scan; |
252b5132 RH |
1926 | int found; |
1927 | ||
1928 | found = 0; | |
9ad5cbcf | 1929 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1930 | { |
1931 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1932 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1933 | { | |
1934 | if (found != 0) | |
1935 | { | |
1936 | found = 0; | |
1937 | break; | |
1938 | } | |
1939 | found = scan; | |
1940 | } | |
1941 | } | |
1942 | if (found != 0) | |
1943 | hdr->sh_link = found; | |
1944 | } | |
1945 | ||
1946 | /* Get the symbol table. */ | |
1b3a8575 AM |
1947 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1948 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1949 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1950 | return FALSE; |
252b5132 RH |
1951 | |
1952 | /* If this reloc section does not use the main symbol table we | |
1953 | don't treat it as a reloc section. BFD can't adequately | |
1954 | represent such a section, so at least for now, we don't | |
c044fabd | 1955 | try. We just present it as a normal section. We also |
60bcf0fa | 1956 | can't use it as a reloc section if it points to the null |
c044fabd | 1957 | section. */ |
60bcf0fa | 1958 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
6dc132d9 L |
1959 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1960 | shindex); | |
252b5132 RH |
1961 | |
1962 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1963 | return FALSE; |
252b5132 RH |
1964 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1965 | if (target_sect == NULL) | |
b34976b6 | 1966 | return FALSE; |
252b5132 RH |
1967 | |
1968 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1969 | || target_sect->reloc_count == 0) | |
1970 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1971 | else | |
1972 | { | |
dc810e39 | 1973 | bfd_size_type amt; |
252b5132 | 1974 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1975 | amt = sizeof (*hdr2); |
217aa764 | 1976 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
1977 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1978 | } | |
1979 | *hdr2 = *hdr; | |
1980 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1981 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1982 | target_sect->flags |= SEC_RELOC; |
1983 | target_sect->relocation = NULL; | |
1984 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1985 | /* In the section to which the relocations apply, mark whether |
1986 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1987 | if (hdr->sh_size != 0) |
68bfbfcc | 1988 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1989 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1990 | return TRUE; |
252b5132 RH |
1991 | } |
1992 | break; | |
1993 | ||
1994 | case SHT_GNU_verdef: | |
1995 | elf_dynverdef (abfd) = shindex; | |
1996 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 1997 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1998 | break; |
1999 | ||
2000 | case SHT_GNU_versym: | |
2001 | elf_dynversym (abfd) = shindex; | |
2002 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2003 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2004 | break; |
2005 | ||
2006 | case SHT_GNU_verneed: | |
2007 | elf_dynverref (abfd) = shindex; | |
2008 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2009 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2010 | break; |
2011 | ||
2012 | case SHT_SHLIB: | |
b34976b6 | 2013 | return TRUE; |
252b5132 | 2014 | |
dbb410c3 | 2015 | case SHT_GROUP: |
b885599b AM |
2016 | /* We need a BFD section for objcopy and relocatable linking, |
2017 | and it's handy to have the signature available as the section | |
2018 | name. */ | |
2019 | name = group_signature (abfd, hdr); | |
2020 | if (name == NULL) | |
b34976b6 | 2021 | return FALSE; |
6dc132d9 | 2022 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2023 | return FALSE; |
dbb410c3 AM |
2024 | if (hdr->contents != NULL) |
2025 | { | |
2026 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2027 | unsigned int n_elt = hdr->sh_size / 4; | |
2028 | asection *s; | |
2029 | ||
b885599b AM |
2030 | if (idx->flags & GRP_COMDAT) |
2031 | hdr->bfd_section->flags | |
2032 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2033 | ||
45c5e9ed L |
2034 | /* We try to keep the same section order as it comes in. */ |
2035 | idx += n_elt; | |
dbb410c3 | 2036 | while (--n_elt != 0) |
45c5e9ed | 2037 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2038 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2039 | { |
945906ff | 2040 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2041 | break; |
2042 | } | |
2043 | } | |
2044 | break; | |
2045 | ||
252b5132 RH |
2046 | default: |
2047 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2048 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2049 | shindex); | |
252b5132 RH |
2050 | } |
2051 | ||
b34976b6 | 2052 | return TRUE; |
252b5132 RH |
2053 | } |
2054 | ||
ec338859 AM |
2055 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2056 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2057 | ||
2058 | asection * | |
217aa764 AM |
2059 | bfd_section_from_r_symndx (bfd *abfd, |
2060 | struct sym_sec_cache *cache, | |
2061 | asection *sec, | |
2062 | unsigned long r_symndx) | |
ec338859 | 2063 | { |
ec338859 | 2064 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2065 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2066 | Elf_External_Sym_Shndx eshndx; | |
2067 | Elf_Internal_Sym isym; | |
ec338859 AM |
2068 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2069 | ||
2070 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2071 | return cache->sec[ent]; | |
2072 | ||
2073 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2074 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2075 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2076 | return NULL; |
9ad5cbcf | 2077 | |
ec338859 AM |
2078 | if (cache->abfd != abfd) |
2079 | { | |
2080 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2081 | cache->abfd = abfd; | |
2082 | } | |
2083 | cache->indx[ent] = r_symndx; | |
2084 | cache->sec[ent] = sec; | |
50bc7936 AM |
2085 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2086 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2087 | { |
2088 | asection *s; | |
6cdc0ccc | 2089 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2090 | if (s != NULL) |
2091 | cache->sec[ent] = s; | |
2092 | } | |
2093 | return cache->sec[ent]; | |
2094 | } | |
2095 | ||
252b5132 RH |
2096 | /* Given an ELF section number, retrieve the corresponding BFD |
2097 | section. */ | |
2098 | ||
2099 | asection * | |
217aa764 | 2100 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2101 | { |
9ad5cbcf | 2102 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2103 | return NULL; |
2104 | return elf_elfsections (abfd)[index]->bfd_section; | |
2105 | } | |
2106 | ||
2f89ff8d L |
2107 | static struct bfd_elf_special_section const special_sections[] = |
2108 | { | |
7dcb9820 | 2109 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
6723a9f4 | 2110 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2111 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
2112 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2113 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2114 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
2115 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2116 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2117 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2118 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2119 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
2120 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2121 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2122 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2123 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2124 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2125 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2126 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, | |
2127 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2128 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2129 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2130 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2131 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2132 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
2133 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2134 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2135 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2136 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2137 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2138 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2139 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
2140 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, | |
2141 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2142 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
45c5e9ed | 2143 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 AM |
2144 | { ".note", 5, -1, SHT_NOTE, 0 }, |
2145 | { ".rela", 5, -1, SHT_RELA, 0 }, | |
2146 | { ".rel", 4, -1, SHT_REL, 0 }, | |
2147 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
7f1204bb JJ |
2148 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2149 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
7dcb9820 | 2150 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2151 | }; |
2152 | ||
2153 | static const struct bfd_elf_special_section * | |
2154 | get_special_section (const char *name, | |
2155 | const struct bfd_elf_special_section *special_sections, | |
2156 | unsigned int rela) | |
2157 | { | |
2158 | int i; | |
7dcb9820 | 2159 | int len = strlen (name); |
2f89ff8d L |
2160 | |
2161 | for (i = 0; special_sections[i].prefix != NULL; i++) | |
7dcb9820 AM |
2162 | { |
2163 | int suffix_len; | |
2164 | int prefix_len = special_sections[i].prefix_length; | |
2165 | ||
2166 | if (len < prefix_len) | |
2167 | continue; | |
2168 | if (memcmp (name, special_sections[i].prefix, prefix_len) != 0) | |
2169 | continue; | |
2170 | ||
2171 | suffix_len = special_sections[i].suffix_length; | |
2172 | if (suffix_len <= 0) | |
2173 | { | |
2174 | if (name[prefix_len] != 0) | |
2175 | { | |
2176 | if (suffix_len == 0) | |
2177 | continue; | |
2178 | if (name[prefix_len] != '.' | |
2179 | && (suffix_len == -2 | |
2180 | || (rela && special_sections[i].type == SHT_REL))) | |
2181 | continue; | |
2182 | } | |
2183 | } | |
2184 | else | |
2185 | { | |
2186 | if (len < prefix_len + suffix_len) | |
2187 | continue; | |
2188 | if (memcmp (name + len - suffix_len, | |
2189 | special_sections[i].prefix + prefix_len, | |
2190 | suffix_len) != 0) | |
2191 | continue; | |
2192 | } | |
2f89ff8d | 2193 | return &special_sections[i]; |
7dcb9820 | 2194 | } |
2f89ff8d L |
2195 | |
2196 | return NULL; | |
2197 | } | |
2198 | ||
7dcb9820 AM |
2199 | const struct bfd_elf_special_section * |
2200 | _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) | |
2f89ff8d | 2201 | { |
9c5bfbb7 | 2202 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7dcb9820 | 2203 | const struct bfd_elf_special_section *ssect = NULL; |
2f89ff8d L |
2204 | |
2205 | /* See if this is one of the special sections. */ | |
2206 | if (name) | |
2207 | { | |
9c5bfbb7 | 2208 | unsigned int rela = bed->default_use_rela_p; |
2f89ff8d L |
2209 | |
2210 | if (bed->special_sections) | |
2211 | ssect = get_special_section (name, bed->special_sections, rela); | |
2212 | ||
2213 | if (! ssect) | |
2214 | ssect = get_special_section (name, special_sections, rela); | |
2f89ff8d L |
2215 | } |
2216 | ||
7dcb9820 | 2217 | return ssect; |
2f89ff8d L |
2218 | } |
2219 | ||
b34976b6 | 2220 | bfd_boolean |
217aa764 | 2221 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2222 | { |
2223 | struct bfd_elf_section_data *sdata; | |
7dcb9820 | 2224 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2225 | |
f0abc2a1 AM |
2226 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2227 | if (sdata == NULL) | |
2228 | { | |
217aa764 | 2229 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2230 | if (sdata == NULL) |
2231 | return FALSE; | |
217aa764 | 2232 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2233 | } |
bf572ba0 | 2234 | |
3cddba1e | 2235 | elf_section_type (sec) = SHT_NULL; |
7dcb9820 AM |
2236 | ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); |
2237 | if (ssect != NULL) | |
2f89ff8d | 2238 | { |
7dcb9820 AM |
2239 | elf_section_type (sec) = ssect->type; |
2240 | elf_section_flags (sec) = ssect->attr; | |
2f89ff8d L |
2241 | } |
2242 | ||
bf572ba0 | 2243 | /* Indicate whether or not this section should use RELA relocations. */ |
68bfbfcc | 2244 | sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; |
bf572ba0 | 2245 | |
b34976b6 | 2246 | return TRUE; |
252b5132 RH |
2247 | } |
2248 | ||
2249 | /* Create a new bfd section from an ELF program header. | |
2250 | ||
2251 | Since program segments have no names, we generate a synthetic name | |
2252 | of the form segment<NUM>, where NUM is generally the index in the | |
2253 | program header table. For segments that are split (see below) we | |
2254 | generate the names segment<NUM>a and segment<NUM>b. | |
2255 | ||
2256 | Note that some program segments may have a file size that is different than | |
2257 | (less than) the memory size. All this means is that at execution the | |
2258 | system must allocate the amount of memory specified by the memory size, | |
2259 | but only initialize it with the first "file size" bytes read from the | |
2260 | file. This would occur for example, with program segments consisting | |
2261 | of combined data+bss. | |
2262 | ||
2263 | To handle the above situation, this routine generates TWO bfd sections | |
2264 | for the single program segment. The first has the length specified by | |
2265 | the file size of the segment, and the second has the length specified | |
2266 | by the difference between the two sizes. In effect, the segment is split | |
2267 | into it's initialized and uninitialized parts. | |
2268 | ||
2269 | */ | |
2270 | ||
b34976b6 | 2271 | bfd_boolean |
217aa764 AM |
2272 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2273 | Elf_Internal_Phdr *hdr, | |
2274 | int index, | |
2275 | const char *typename) | |
252b5132 RH |
2276 | { |
2277 | asection *newsect; | |
2278 | char *name; | |
2279 | char namebuf[64]; | |
d4c88bbb | 2280 | size_t len; |
252b5132 RH |
2281 | int split; |
2282 | ||
2283 | split = ((hdr->p_memsz > 0) | |
2284 | && (hdr->p_filesz > 0) | |
2285 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2286 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2287 | len = strlen (namebuf) + 1; |
217aa764 | 2288 | name = bfd_alloc (abfd, len); |
252b5132 | 2289 | if (!name) |
b34976b6 | 2290 | return FALSE; |
d4c88bbb | 2291 | memcpy (name, namebuf, len); |
252b5132 RH |
2292 | newsect = bfd_make_section (abfd, name); |
2293 | if (newsect == NULL) | |
b34976b6 | 2294 | return FALSE; |
252b5132 RH |
2295 | newsect->vma = hdr->p_vaddr; |
2296 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2297 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2298 | newsect->filepos = hdr->p_offset; |
2299 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2300 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2301 | if (hdr->p_type == PT_LOAD) |
2302 | { | |
2303 | newsect->flags |= SEC_ALLOC; | |
2304 | newsect->flags |= SEC_LOAD; | |
2305 | if (hdr->p_flags & PF_X) | |
2306 | { | |
2307 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2308 | may be data. */ |
252b5132 RH |
2309 | newsect->flags |= SEC_CODE; |
2310 | } | |
2311 | } | |
2312 | if (!(hdr->p_flags & PF_W)) | |
2313 | { | |
2314 | newsect->flags |= SEC_READONLY; | |
2315 | } | |
2316 | ||
2317 | if (split) | |
2318 | { | |
27ac83bf | 2319 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2320 | len = strlen (namebuf) + 1; |
217aa764 | 2321 | name = bfd_alloc (abfd, len); |
252b5132 | 2322 | if (!name) |
b34976b6 | 2323 | return FALSE; |
d4c88bbb | 2324 | memcpy (name, namebuf, len); |
252b5132 RH |
2325 | newsect = bfd_make_section (abfd, name); |
2326 | if (newsect == NULL) | |
b34976b6 | 2327 | return FALSE; |
252b5132 RH |
2328 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2329 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2330 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2331 | if (hdr->p_type == PT_LOAD) |
2332 | { | |
2333 | newsect->flags |= SEC_ALLOC; | |
2334 | if (hdr->p_flags & PF_X) | |
2335 | newsect->flags |= SEC_CODE; | |
2336 | } | |
2337 | if (!(hdr->p_flags & PF_W)) | |
2338 | newsect->flags |= SEC_READONLY; | |
2339 | } | |
2340 | ||
b34976b6 | 2341 | return TRUE; |
252b5132 RH |
2342 | } |
2343 | ||
b34976b6 | 2344 | bfd_boolean |
217aa764 | 2345 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2346 | { |
9c5bfbb7 | 2347 | const struct elf_backend_data *bed; |
20cfcaae NC |
2348 | |
2349 | switch (hdr->p_type) | |
2350 | { | |
2351 | case PT_NULL: | |
2352 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2353 | ||
2354 | case PT_LOAD: | |
2355 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2356 | ||
2357 | case PT_DYNAMIC: | |
2358 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2359 | ||
2360 | case PT_INTERP: | |
2361 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2362 | ||
2363 | case PT_NOTE: | |
2364 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2365 | return FALSE; |
217aa764 | 2366 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2367 | return FALSE; |
2368 | return TRUE; | |
20cfcaae NC |
2369 | |
2370 | case PT_SHLIB: | |
2371 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2372 | ||
2373 | case PT_PHDR: | |
2374 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2375 | ||
811072d8 RM |
2376 | case PT_GNU_EH_FRAME: |
2377 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2378 | "eh_frame_hdr"); | |
2379 | ||
9ee5e499 JJ |
2380 | case PT_GNU_STACK: |
2381 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2382 | ||
8c37241b JJ |
2383 | case PT_GNU_RELRO: |
2384 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2385 | ||
20cfcaae | 2386 | default: |
8c1acd09 | 2387 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2388 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2389 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2390 | } |
2391 | } | |
2392 | ||
23bc299b | 2393 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2394 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2395 | relocations; otherwise, we use REL relocations. */ |
2396 | ||
b34976b6 | 2397 | bfd_boolean |
217aa764 AM |
2398 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2399 | Elf_Internal_Shdr *rel_hdr, | |
2400 | asection *asect, | |
2401 | bfd_boolean use_rela_p) | |
23bc299b MM |
2402 | { |
2403 | char *name; | |
9c5bfbb7 | 2404 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2405 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2406 | |
dc810e39 | 2407 | name = bfd_alloc (abfd, amt); |
23bc299b | 2408 | if (name == NULL) |
b34976b6 | 2409 | return FALSE; |
23bc299b MM |
2410 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2411 | rel_hdr->sh_name = | |
2b0f7ef9 | 2412 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2413 | FALSE); |
23bc299b | 2414 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2415 | return FALSE; |
23bc299b MM |
2416 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2417 | rel_hdr->sh_entsize = (use_rela_p | |
2418 | ? bed->s->sizeof_rela | |
2419 | : bed->s->sizeof_rel); | |
45d6a902 | 2420 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2421 | rel_hdr->sh_flags = 0; |
2422 | rel_hdr->sh_addr = 0; | |
2423 | rel_hdr->sh_size = 0; | |
2424 | rel_hdr->sh_offset = 0; | |
2425 | ||
b34976b6 | 2426 | return TRUE; |
23bc299b MM |
2427 | } |
2428 | ||
252b5132 RH |
2429 | /* Set up an ELF internal section header for a section. */ |
2430 | ||
252b5132 | 2431 | static void |
217aa764 | 2432 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2433 | { |
9c5bfbb7 | 2434 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2435 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2436 | Elf_Internal_Shdr *this_hdr; |
2437 | ||
2438 | if (*failedptr) | |
2439 | { | |
2440 | /* We already failed; just get out of the bfd_map_over_sections | |
2441 | loop. */ | |
2442 | return; | |
2443 | } | |
2444 | ||
2445 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2446 | ||
e57b5356 AM |
2447 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2448 | asect->name, FALSE); | |
2449 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2450 | { |
b34976b6 | 2451 | *failedptr = TRUE; |
252b5132 RH |
2452 | return; |
2453 | } | |
2454 | ||
2455 | this_hdr->sh_flags = 0; | |
2456 | ||
2457 | if ((asect->flags & SEC_ALLOC) != 0 | |
2458 | || asect->user_set_vma) | |
2459 | this_hdr->sh_addr = asect->vma; | |
2460 | else | |
2461 | this_hdr->sh_addr = 0; | |
2462 | ||
2463 | this_hdr->sh_offset = 0; | |
eea6121a | 2464 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2465 | this_hdr->sh_link = 0; |
2466 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2467 | /* The sh_entsize and sh_info fields may have been set already by | |
2468 | copy_private_section_data. */ | |
2469 | ||
2470 | this_hdr->bfd_section = asect; | |
2471 | this_hdr->contents = NULL; | |
2472 | ||
3cddba1e L |
2473 | /* If the section type is unspecified, we set it based on |
2474 | asect->flags. */ | |
2475 | if (this_hdr->sh_type == SHT_NULL) | |
2476 | { | |
45c5e9ed L |
2477 | if ((asect->flags & SEC_GROUP) != 0) |
2478 | { | |
2479 | /* We also need to mark SHF_GROUP here for relocatable | |
2480 | link. */ | |
2481 | struct bfd_link_order *l; | |
2482 | asection *elt; | |
2483 | ||
2484 | for (l = asect->link_order_head; l != NULL; l = l->next) | |
2485 | if (l->type == bfd_indirect_link_order | |
2486 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2487 | do | |
2488 | { | |
2489 | /* The name is not important. Anything will do. */ | |
2490 | elf_group_name (elt->output_section) = "G"; | |
2491 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2492 | ||
2493 | elt = elf_next_in_group (elt); | |
2494 | /* During a relocatable link, the lists are | |
2495 | circular. */ | |
2496 | } | |
2497 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2498 | ||
2499 | this_hdr->sh_type = SHT_GROUP; | |
2500 | } | |
2501 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2502 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2503 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2504 | this_hdr->sh_type = SHT_NOBITS; | |
2505 | else | |
2506 | this_hdr->sh_type = SHT_PROGBITS; | |
2507 | } | |
2508 | ||
2f89ff8d | 2509 | switch (this_hdr->sh_type) |
252b5132 | 2510 | { |
2f89ff8d | 2511 | default: |
2f89ff8d L |
2512 | break; |
2513 | ||
2514 | case SHT_STRTAB: | |
2515 | case SHT_INIT_ARRAY: | |
2516 | case SHT_FINI_ARRAY: | |
2517 | case SHT_PREINIT_ARRAY: | |
2518 | case SHT_NOTE: | |
2519 | case SHT_NOBITS: | |
2520 | case SHT_PROGBITS: | |
2521 | break; | |
2522 | ||
2523 | case SHT_HASH: | |
c7ac6ff8 | 2524 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2525 | break; |
5de3bf90 | 2526 | |
2f89ff8d | 2527 | case SHT_DYNSYM: |
252b5132 | 2528 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2529 | break; |
2530 | ||
2531 | case SHT_DYNAMIC: | |
252b5132 | 2532 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2533 | break; |
2534 | ||
2535 | case SHT_RELA: | |
2536 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2537 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2538 | break; | |
2539 | ||
2540 | case SHT_REL: | |
2541 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2542 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2543 | break; | |
2544 | ||
2545 | case SHT_GNU_versym: | |
252b5132 | 2546 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2547 | break; |
2548 | ||
2549 | case SHT_GNU_verdef: | |
252b5132 RH |
2550 | this_hdr->sh_entsize = 0; |
2551 | /* objcopy or strip will copy over sh_info, but may not set | |
2552 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2553 | zero. */ | |
2554 | if (this_hdr->sh_info == 0) | |
2555 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2556 | else | |
2557 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2558 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2559 | break; |
2560 | ||
2561 | case SHT_GNU_verneed: | |
252b5132 RH |
2562 | this_hdr->sh_entsize = 0; |
2563 | /* objcopy or strip will copy over sh_info, but may not set | |
2564 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2565 | zero. */ | |
2566 | if (this_hdr->sh_info == 0) | |
2567 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2568 | else | |
2569 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2570 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2571 | break; |
2572 | ||
2573 | case SHT_GROUP: | |
dbb410c3 | 2574 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2575 | break; |
dbb410c3 | 2576 | } |
252b5132 RH |
2577 | |
2578 | if ((asect->flags & SEC_ALLOC) != 0) | |
2579 | this_hdr->sh_flags |= SHF_ALLOC; | |
2580 | if ((asect->flags & SEC_READONLY) == 0) | |
2581 | this_hdr->sh_flags |= SHF_WRITE; | |
2582 | if ((asect->flags & SEC_CODE) != 0) | |
2583 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2584 | if ((asect->flags & SEC_MERGE) != 0) |
2585 | { | |
2586 | this_hdr->sh_flags |= SHF_MERGE; | |
2587 | this_hdr->sh_entsize = asect->entsize; | |
2588 | if ((asect->flags & SEC_STRINGS) != 0) | |
2589 | this_hdr->sh_flags |= SHF_STRINGS; | |
2590 | } | |
1126897b | 2591 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2592 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2593 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2594 | { |
2595 | this_hdr->sh_flags |= SHF_TLS; | |
eea6121a | 2596 | if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) |
704afa60 JJ |
2597 | { |
2598 | struct bfd_link_order *o; | |
b34976b6 | 2599 | |
704afa60 JJ |
2600 | this_hdr->sh_size = 0; |
2601 | for (o = asect->link_order_head; o != NULL; o = o->next) | |
2602 | if (this_hdr->sh_size < o->offset + o->size) | |
2603 | this_hdr->sh_size = o->offset + o->size; | |
2604 | if (this_hdr->sh_size) | |
2605 | this_hdr->sh_type = SHT_NOBITS; | |
2606 | } | |
2607 | } | |
252b5132 RH |
2608 | |
2609 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2610 | if (bed->elf_backend_fake_sections |
2611 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2612 | *failedptr = TRUE; |
252b5132 RH |
2613 | |
2614 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2615 | SHT_REL[A] section. If two relocation sections are required for |
2616 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2617 | create the other. */ |
23bc299b | 2618 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2619 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2620 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2621 | asect, |
68bfbfcc | 2622 | asect->use_rela_p)) |
b34976b6 | 2623 | *failedptr = TRUE; |
252b5132 RH |
2624 | } |
2625 | ||
dbb410c3 AM |
2626 | /* Fill in the contents of a SHT_GROUP section. */ |
2627 | ||
1126897b | 2628 | void |
217aa764 | 2629 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2630 | { |
217aa764 | 2631 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2632 | unsigned long symindx; |
9dce4196 | 2633 | asection *elt, *first; |
dbb410c3 AM |
2634 | unsigned char *loc; |
2635 | struct bfd_link_order *l; | |
b34976b6 | 2636 | bfd_boolean gas; |
dbb410c3 | 2637 | |
7e4111ad L |
2638 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2639 | elfxx-ia64.c. */ | |
2640 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2641 | || *failedptr) |
2642 | return; | |
2643 | ||
1126897b AM |
2644 | symindx = 0; |
2645 | if (elf_group_id (sec) != NULL) | |
2646 | symindx = elf_group_id (sec)->udata.i; | |
2647 | ||
2648 | if (symindx == 0) | |
2649 | { | |
2650 | /* If called from the assembler, swap_out_syms will have set up | |
2651 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2652 | if (elf_section_syms (abfd) != NULL) | |
2653 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2654 | else | |
2655 | symindx = sec->target_index; | |
2656 | } | |
dbb410c3 AM |
2657 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2658 | ||
1126897b | 2659 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2660 | gas = TRUE; |
dbb410c3 AM |
2661 | if (sec->contents == NULL) |
2662 | { | |
b34976b6 | 2663 | gas = FALSE; |
eea6121a | 2664 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2665 | |
2666 | /* Arrange for the section to be written out. */ | |
2667 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2668 | if (sec->contents == NULL) |
2669 | { | |
b34976b6 | 2670 | *failedptr = TRUE; |
dbb410c3 AM |
2671 | return; |
2672 | } | |
2673 | } | |
2674 | ||
eea6121a | 2675 | loc = sec->contents + sec->size; |
dbb410c3 | 2676 | |
9dce4196 AM |
2677 | /* Get the pointer to the first section in the group that gas |
2678 | squirreled away here. objcopy arranges for this to be set to the | |
2679 | start of the input section group. */ | |
2680 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2681 | |
2682 | /* First element is a flag word. Rest of section is elf section | |
2683 | indices for all the sections of the group. Write them backwards | |
2684 | just to keep the group in the same order as given in .section | |
2685 | directives, not that it matters. */ | |
2686 | while (elt != NULL) | |
2687 | { | |
9dce4196 AM |
2688 | asection *s; |
2689 | unsigned int idx; | |
2690 | ||
dbb410c3 | 2691 | loc -= 4; |
9dce4196 AM |
2692 | s = elt; |
2693 | if (!gas) | |
2694 | s = s->output_section; | |
2695 | idx = 0; | |
2696 | if (s != NULL) | |
2697 | idx = elf_section_data (s)->this_idx; | |
2698 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2699 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2700 | if (elt == first) |
2701 | break; | |
dbb410c3 AM |
2702 | } |
2703 | ||
2704 | /* If this is a relocatable link, then the above did nothing because | |
2705 | SEC is the output section. Look through the input sections | |
2706 | instead. */ | |
2707 | for (l = sec->link_order_head; l != NULL; l = l->next) | |
2708 | if (l->type == bfd_indirect_link_order | |
945906ff | 2709 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2710 | do |
2711 | { | |
2712 | loc -= 4; | |
2713 | H_PUT_32 (abfd, | |
2714 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2715 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2716 | /* During a relocatable link, the lists are circular. */ |
2717 | } | |
945906ff | 2718 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2719 | |
3d7f7666 | 2720 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2721 | abort (); |
dbb410c3 | 2722 | |
9dce4196 | 2723 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2724 | } |
2725 | ||
252b5132 RH |
2726 | /* Assign all ELF section numbers. The dummy first section is handled here |
2727 | too. The link/info pointers for the standard section types are filled | |
2728 | in here too, while we're at it. */ | |
2729 | ||
b34976b6 | 2730 | static bfd_boolean |
da9f89d4 | 2731 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2732 | { |
2733 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2734 | asection *sec; | |
2b0f7ef9 | 2735 | unsigned int section_number, secn; |
252b5132 | 2736 | Elf_Internal_Shdr **i_shdrp; |
dc810e39 | 2737 | bfd_size_type amt; |
47cc2cf5 | 2738 | struct bfd_elf_section_data *d; |
252b5132 RH |
2739 | |
2740 | section_number = 1; | |
2741 | ||
2b0f7ef9 JJ |
2742 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2743 | ||
da9f89d4 L |
2744 | /* SHT_GROUP sections are in relocatable files only. */ |
2745 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2746 | { |
da9f89d4 | 2747 | asection **secp; |
252b5132 | 2748 | |
da9f89d4 L |
2749 | /* Put SHT_GROUP sections first. */ |
2750 | secp = &abfd->sections; | |
2751 | while (*secp) | |
47cc2cf5 | 2752 | { |
da9f89d4 L |
2753 | d = elf_section_data (*secp); |
2754 | ||
2755 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2756 | { | |
2757 | if ((*secp)->flags & SEC_LINKER_CREATED) | |
2758 | { | |
2759 | /* Remove the linker created SHT_GROUP sections. */ | |
2760 | bfd_section_list_remove (abfd, secp); | |
2761 | abfd->section_count--; | |
2762 | continue; | |
2763 | } | |
2764 | else | |
2765 | { | |
2766 | if (section_number == SHN_LORESERVE) | |
2767 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2768 | d->this_idx = section_number++; | |
2769 | } | |
2770 | } | |
2771 | ||
2772 | secp = &(*secp)->next; | |
47cc2cf5 PB |
2773 | } |
2774 | } | |
2775 | ||
2776 | for (sec = abfd->sections; sec; sec = sec->next) | |
2777 | { | |
2778 | d = elf_section_data (sec); | |
2779 | ||
2780 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2781 | { | |
2782 | if (section_number == SHN_LORESERVE) | |
2783 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2784 | d->this_idx = section_number++; | |
2785 | } | |
2b0f7ef9 | 2786 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2787 | if ((sec->flags & SEC_RELOC) == 0) |
2788 | d->rel_idx = 0; | |
2789 | else | |
2b0f7ef9 | 2790 | { |
9ad5cbcf AM |
2791 | if (section_number == SHN_LORESERVE) |
2792 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2793 | d->rel_idx = section_number++; |
2794 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2795 | } | |
23bc299b MM |
2796 | |
2797 | if (d->rel_hdr2) | |
2b0f7ef9 | 2798 | { |
9ad5cbcf AM |
2799 | if (section_number == SHN_LORESERVE) |
2800 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2801 | d->rel_idx2 = section_number++; |
2802 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2803 | } | |
23bc299b MM |
2804 | else |
2805 | d->rel_idx2 = 0; | |
252b5132 RH |
2806 | } |
2807 | ||
9ad5cbcf AM |
2808 | if (section_number == SHN_LORESERVE) |
2809 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2810 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2811 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2812 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2813 | |
2814 | if (bfd_get_symcount (abfd) > 0) | |
2815 | { | |
9ad5cbcf AM |
2816 | if (section_number == SHN_LORESERVE) |
2817 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2818 | t->symtab_section = section_number++; |
2b0f7ef9 | 2819 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2820 | if (section_number > SHN_LORESERVE - 2) |
2821 | { | |
2822 | if (section_number == SHN_LORESERVE) | |
2823 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2824 | t->symtab_shndx_section = section_number++; | |
2825 | t->symtab_shndx_hdr.sh_name | |
2826 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2827 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2828 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2829 | return FALSE; |
9ad5cbcf AM |
2830 | } |
2831 | if (section_number == SHN_LORESERVE) | |
2832 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2833 | t->strtab_section = section_number++; |
2b0f7ef9 | 2834 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2835 | } |
2836 | ||
2b0f7ef9 JJ |
2837 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2838 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2839 | |
2840 | elf_numsections (abfd) = section_number; | |
252b5132 | 2841 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2842 | if (section_number > SHN_LORESERVE) |
2843 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2844 | |
2845 | /* Set up the list of section header pointers, in agreement with the | |
2846 | indices. */ | |
dc810e39 | 2847 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
217aa764 | 2848 | i_shdrp = bfd_zalloc (abfd, amt); |
252b5132 | 2849 | if (i_shdrp == NULL) |
b34976b6 | 2850 | return FALSE; |
252b5132 | 2851 | |
dc810e39 | 2852 | amt = sizeof (Elf_Internal_Shdr); |
217aa764 | 2853 | i_shdrp[0] = bfd_zalloc (abfd, amt); |
252b5132 RH |
2854 | if (i_shdrp[0] == NULL) |
2855 | { | |
2856 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2857 | return FALSE; |
252b5132 | 2858 | } |
252b5132 RH |
2859 | |
2860 | elf_elfsections (abfd) = i_shdrp; | |
2861 | ||
2862 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2863 | if (bfd_get_symcount (abfd) > 0) | |
2864 | { | |
2865 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2866 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2867 | { | |
2868 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2869 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2870 | } | |
252b5132 RH |
2871 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2872 | t->symtab_hdr.sh_link = t->strtab_section; | |
2873 | } | |
38ce5b11 | 2874 | |
252b5132 RH |
2875 | for (sec = abfd->sections; sec; sec = sec->next) |
2876 | { | |
2877 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2878 | asection *s; | |
2879 | const char *name; | |
2880 | ||
2881 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2882 | if (d->rel_idx != 0) | |
2883 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2884 | if (d->rel_idx2 != 0) |
2885 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2886 | |
2887 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2888 | ||
2889 | /* sh_link of a reloc section is the section index of the symbol | |
2890 | table. sh_info is the section index of the section to which | |
2891 | the relocation entries apply. */ | |
2892 | if (d->rel_idx != 0) | |
2893 | { | |
2894 | d->rel_hdr.sh_link = t->symtab_section; | |
2895 | d->rel_hdr.sh_info = d->this_idx; | |
2896 | } | |
23bc299b MM |
2897 | if (d->rel_idx2 != 0) |
2898 | { | |
2899 | d->rel_hdr2->sh_link = t->symtab_section; | |
2900 | d->rel_hdr2->sh_info = d->this_idx; | |
2901 | } | |
252b5132 | 2902 | |
38ce5b11 L |
2903 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2904 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2905 | { | |
2906 | s = elf_linked_to_section (sec); | |
2907 | if (s) | |
2908 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2909 | else | |
2910 | { | |
2911 | struct bfd_link_order *p; | |
2912 | ||
2913 | /* Find out what the corresponding section in output | |
2914 | is. */ | |
2915 | for (p = sec->link_order_head; p != NULL; p = p->next) | |
2916 | { | |
2917 | s = p->u.indirect.section; | |
2918 | if (p->type == bfd_indirect_link_order | |
2919 | && (bfd_get_flavour (s->owner) | |
2920 | == bfd_target_elf_flavour)) | |
2921 | { | |
2922 | Elf_Internal_Shdr ** const elf_shdrp | |
2923 | = elf_elfsections (s->owner); | |
2924 | int elfsec | |
2925 | = _bfd_elf_section_from_bfd_section (s->owner, s); | |
2926 | elfsec = elf_shdrp[elfsec]->sh_link; | |
185d09ad L |
2927 | /* PR 290: |
2928 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
2929 | SHF_LINK_ORDER. But it doesn't set theh sh_link or | |
2930 | sh_info fields. Hence we could get the situation | |
2931 | where elfsec is 0. */ | |
2932 | if (elfsec == 0) | |
2933 | { | |
2934 | const struct elf_backend_data *bed | |
2935 | = get_elf_backend_data (abfd); | |
2936 | if (bed->link_order_error_handler) | |
d003868e | 2937 | bed->link_order_error_handler |
28b13744 | 2938 | (_("%B: warning: sh_link not set for section `%A'"), |
d003868e | 2939 | abfd, s); |
185d09ad L |
2940 | } |
2941 | else | |
2942 | { | |
01b3c8ab L |
2943 | s = elf_shdrp[elfsec]->bfd_section; |
2944 | if (elf_discarded_section (s)) | |
2945 | { | |
2946 | asection *kept; | |
2947 | (*_bfd_error_handler) | |
2948 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2949 | abfd, d->this_hdr.bfd_section, | |
2950 | s, s->owner); | |
2951 | /* Point to the kept section if it has | |
2952 | the same size as the discarded | |
2953 | one. */ | |
2954 | kept = _bfd_elf_check_kept_section (s); | |
2955 | if (kept == NULL) | |
2956 | { | |
2957 | bfd_set_error (bfd_error_bad_value); | |
2958 | return FALSE; | |
2959 | } | |
2796fd96 | 2960 | s = kept; |
01b3c8ab L |
2961 | } |
2962 | s = s->output_section; | |
185d09ad L |
2963 | BFD_ASSERT (s != NULL); |
2964 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2965 | } | |
38ce5b11 L |
2966 | break; |
2967 | } | |
2968 | } | |
2969 | } | |
2970 | } | |
2971 | ||
252b5132 RH |
2972 | switch (d->this_hdr.sh_type) |
2973 | { | |
2974 | case SHT_REL: | |
2975 | case SHT_RELA: | |
2976 | /* A reloc section which we are treating as a normal BFD | |
2977 | section. sh_link is the section index of the symbol | |
2978 | table. sh_info is the section index of the section to | |
2979 | which the relocation entries apply. We assume that an | |
2980 | allocated reloc section uses the dynamic symbol table. | |
2981 | FIXME: How can we be sure? */ | |
2982 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2983 | if (s != NULL) | |
2984 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2985 | ||
2986 | /* We look up the section the relocs apply to by name. */ | |
2987 | name = sec->name; | |
2988 | if (d->this_hdr.sh_type == SHT_REL) | |
2989 | name += 4; | |
2990 | else | |
2991 | name += 5; | |
2992 | s = bfd_get_section_by_name (abfd, name); | |
2993 | if (s != NULL) | |
2994 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
2995 | break; | |
2996 | ||
2997 | case SHT_STRTAB: | |
2998 | /* We assume that a section named .stab*str is a stabs | |
2999 | string section. We look for a section with the same name | |
3000 | but without the trailing ``str'', and set its sh_link | |
3001 | field to point to this section. */ | |
3002 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3003 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3004 | { | |
3005 | size_t len; | |
3006 | char *alc; | |
3007 | ||
3008 | len = strlen (sec->name); | |
217aa764 | 3009 | alc = bfd_malloc (len - 2); |
252b5132 | 3010 | if (alc == NULL) |
b34976b6 | 3011 | return FALSE; |
d4c88bbb | 3012 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3013 | alc[len - 3] = '\0'; |
3014 | s = bfd_get_section_by_name (abfd, alc); | |
3015 | free (alc); | |
3016 | if (s != NULL) | |
3017 | { | |
3018 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3019 | ||
3020 | /* This is a .stab section. */ | |
0594c12d AM |
3021 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3022 | elf_section_data (s)->this_hdr.sh_entsize | |
3023 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3024 | } |
3025 | } | |
3026 | break; | |
3027 | ||
3028 | case SHT_DYNAMIC: | |
3029 | case SHT_DYNSYM: | |
3030 | case SHT_GNU_verneed: | |
3031 | case SHT_GNU_verdef: | |
3032 | /* sh_link is the section header index of the string table | |
3033 | used for the dynamic entries, or the symbol table, or the | |
3034 | version strings. */ | |
3035 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3036 | if (s != NULL) | |
3037 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3038 | break; | |
3039 | ||
7f1204bb JJ |
3040 | case SHT_GNU_LIBLIST: |
3041 | /* sh_link is the section header index of the prelink library | |
3042 | list | |
3043 | used for the dynamic entries, or the symbol table, or the | |
3044 | version strings. */ | |
3045 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3046 | ? ".dynstr" : ".gnu.libstr"); | |
3047 | if (s != NULL) | |
3048 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3049 | break; | |
3050 | ||
252b5132 RH |
3051 | case SHT_HASH: |
3052 | case SHT_GNU_versym: | |
3053 | /* sh_link is the section header index of the symbol table | |
3054 | this hash table or version table is for. */ | |
3055 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3056 | if (s != NULL) | |
3057 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3058 | break; | |
dbb410c3 AM |
3059 | |
3060 | case SHT_GROUP: | |
3061 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3062 | } |
3063 | } | |
3064 | ||
2b0f7ef9 | 3065 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3066 | if (i_shdrp[secn] == NULL) |
3067 | i_shdrp[secn] = i_shdrp[0]; | |
3068 | else | |
3069 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3070 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3071 | return TRUE; |
252b5132 RH |
3072 | } |
3073 | ||
3074 | /* Map symbol from it's internal number to the external number, moving | |
3075 | all local symbols to be at the head of the list. */ | |
3076 | ||
268b6b39 | 3077 | static int |
217aa764 | 3078 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3079 | { |
3080 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3081 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3082 | if (bed->elf_backend_sym_is_global) |
3083 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3084 | |
3085 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3086 | || bfd_is_und_section (bfd_get_section (sym)) | |
3087 | || bfd_is_com_section (bfd_get_section (sym))); | |
3088 | } | |
3089 | ||
b34976b6 | 3090 | static bfd_boolean |
217aa764 | 3091 | elf_map_symbols (bfd *abfd) |
252b5132 | 3092 | { |
dc810e39 | 3093 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3094 | asymbol **syms = bfd_get_outsymbols (abfd); |
3095 | asymbol **sect_syms; | |
dc810e39 AM |
3096 | unsigned int num_locals = 0; |
3097 | unsigned int num_globals = 0; | |
3098 | unsigned int num_locals2 = 0; | |
3099 | unsigned int num_globals2 = 0; | |
252b5132 | 3100 | int max_index = 0; |
dc810e39 | 3101 | unsigned int idx; |
252b5132 RH |
3102 | asection *asect; |
3103 | asymbol **new_syms; | |
dc810e39 | 3104 | bfd_size_type amt; |
252b5132 RH |
3105 | |
3106 | #ifdef DEBUG | |
3107 | fprintf (stderr, "elf_map_symbols\n"); | |
3108 | fflush (stderr); | |
3109 | #endif | |
3110 | ||
252b5132 RH |
3111 | for (asect = abfd->sections; asect; asect = asect->next) |
3112 | { | |
3113 | if (max_index < asect->index) | |
3114 | max_index = asect->index; | |
3115 | } | |
3116 | ||
3117 | max_index++; | |
dc810e39 | 3118 | amt = max_index * sizeof (asymbol *); |
217aa764 | 3119 | sect_syms = bfd_zalloc (abfd, amt); |
252b5132 | 3120 | if (sect_syms == NULL) |
b34976b6 | 3121 | return FALSE; |
252b5132 | 3122 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3123 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3124 | |
079e9a2f AM |
3125 | /* Init sect_syms entries for any section symbols we have already |
3126 | decided to output. */ | |
252b5132 RH |
3127 | for (idx = 0; idx < symcount; idx++) |
3128 | { | |
dc810e39 | 3129 | asymbol *sym = syms[idx]; |
c044fabd | 3130 | |
252b5132 RH |
3131 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3132 | && sym->value == 0) | |
3133 | { | |
3134 | asection *sec; | |
3135 | ||
3136 | sec = sym->section; | |
3137 | ||
3138 | if (sec->owner != NULL) | |
3139 | { | |
3140 | if (sec->owner != abfd) | |
3141 | { | |
3142 | if (sec->output_offset != 0) | |
3143 | continue; | |
c044fabd | 3144 | |
252b5132 RH |
3145 | sec = sec->output_section; |
3146 | ||
079e9a2f AM |
3147 | /* Empty sections in the input files may have had a |
3148 | section symbol created for them. (See the comment | |
3149 | near the end of _bfd_generic_link_output_symbols in | |
3150 | linker.c). If the linker script discards such | |
3151 | sections then we will reach this point. Since we know | |
3152 | that we cannot avoid this case, we detect it and skip | |
3153 | the abort and the assignment to the sect_syms array. | |
3154 | To reproduce this particular case try running the | |
3155 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3156 | port that uses the generic linker. */ | |
252b5132 RH |
3157 | if (sec->owner == NULL) |
3158 | continue; | |
3159 | ||
3160 | BFD_ASSERT (sec->owner == abfd); | |
3161 | } | |
3162 | sect_syms[sec->index] = syms[idx]; | |
3163 | } | |
3164 | } | |
3165 | } | |
3166 | ||
252b5132 RH |
3167 | /* Classify all of the symbols. */ |
3168 | for (idx = 0; idx < symcount; idx++) | |
3169 | { | |
3170 | if (!sym_is_global (abfd, syms[idx])) | |
3171 | num_locals++; | |
3172 | else | |
3173 | num_globals++; | |
3174 | } | |
079e9a2f AM |
3175 | |
3176 | /* We will be adding a section symbol for each BFD section. Most normal | |
3177 | sections will already have a section symbol in outsymbols, but | |
3178 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3179 | at least in that case. */ | |
252b5132 RH |
3180 | for (asect = abfd->sections; asect; asect = asect->next) |
3181 | { | |
079e9a2f | 3182 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3183 | { |
079e9a2f | 3184 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3185 | num_locals++; |
3186 | else | |
3187 | num_globals++; | |
252b5132 RH |
3188 | } |
3189 | } | |
3190 | ||
3191 | /* Now sort the symbols so the local symbols are first. */ | |
dc810e39 | 3192 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
217aa764 | 3193 | new_syms = bfd_alloc (abfd, amt); |
dc810e39 | 3194 | |
252b5132 | 3195 | if (new_syms == NULL) |
b34976b6 | 3196 | return FALSE; |
252b5132 RH |
3197 | |
3198 | for (idx = 0; idx < symcount; idx++) | |
3199 | { | |
3200 | asymbol *sym = syms[idx]; | |
dc810e39 | 3201 | unsigned int i; |
252b5132 RH |
3202 | |
3203 | if (!sym_is_global (abfd, sym)) | |
3204 | i = num_locals2++; | |
3205 | else | |
3206 | i = num_locals + num_globals2++; | |
3207 | new_syms[i] = sym; | |
3208 | sym->udata.i = i + 1; | |
3209 | } | |
3210 | for (asect = abfd->sections; asect; asect = asect->next) | |
3211 | { | |
079e9a2f | 3212 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3213 | { |
079e9a2f | 3214 | asymbol *sym = asect->symbol; |
dc810e39 | 3215 | unsigned int i; |
252b5132 | 3216 | |
079e9a2f | 3217 | sect_syms[asect->index] = sym; |
252b5132 RH |
3218 | if (!sym_is_global (abfd, sym)) |
3219 | i = num_locals2++; | |
3220 | else | |
3221 | i = num_locals + num_globals2++; | |
3222 | new_syms[i] = sym; | |
3223 | sym->udata.i = i + 1; | |
3224 | } | |
3225 | } | |
3226 | ||
3227 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3228 | ||
3229 | elf_num_locals (abfd) = num_locals; | |
3230 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3231 | return TRUE; |
252b5132 RH |
3232 | } |
3233 | ||
3234 | /* Align to the maximum file alignment that could be required for any | |
3235 | ELF data structure. */ | |
3236 | ||
268b6b39 | 3237 | static inline file_ptr |
217aa764 | 3238 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3239 | { |
3240 | return (off + align - 1) & ~(align - 1); | |
3241 | } | |
3242 | ||
3243 | /* Assign a file position to a section, optionally aligning to the | |
3244 | required section alignment. */ | |
3245 | ||
217aa764 AM |
3246 | file_ptr |
3247 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3248 | file_ptr offset, | |
3249 | bfd_boolean align) | |
252b5132 RH |
3250 | { |
3251 | if (align) | |
3252 | { | |
3253 | unsigned int al; | |
3254 | ||
3255 | al = i_shdrp->sh_addralign; | |
3256 | if (al > 1) | |
3257 | offset = BFD_ALIGN (offset, al); | |
3258 | } | |
3259 | i_shdrp->sh_offset = offset; | |
3260 | if (i_shdrp->bfd_section != NULL) | |
3261 | i_shdrp->bfd_section->filepos = offset; | |
3262 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3263 | offset += i_shdrp->sh_size; | |
3264 | return offset; | |
3265 | } | |
3266 | ||
3267 | /* Compute the file positions we are going to put the sections at, and | |
3268 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3269 | is not NULL, this is being called by the ELF backend linker. */ | |
3270 | ||
b34976b6 | 3271 | bfd_boolean |
217aa764 AM |
3272 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3273 | struct bfd_link_info *link_info) | |
252b5132 | 3274 | { |
9c5bfbb7 | 3275 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3276 | bfd_boolean failed; |
4b6c0f2f | 3277 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3278 | Elf_Internal_Shdr *shstrtab_hdr; |
3279 | ||
3280 | if (abfd->output_has_begun) | |
b34976b6 | 3281 | return TRUE; |
252b5132 RH |
3282 | |
3283 | /* Do any elf backend specific processing first. */ | |
3284 | if (bed->elf_backend_begin_write_processing) | |
3285 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3286 | ||
3287 | if (! prep_headers (abfd)) | |
b34976b6 | 3288 | return FALSE; |
252b5132 | 3289 | |
e6c51ed4 NC |
3290 | /* Post process the headers if necessary. */ |
3291 | if (bed->elf_backend_post_process_headers) | |
3292 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3293 | ||
b34976b6 | 3294 | failed = FALSE; |
252b5132 RH |
3295 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3296 | if (failed) | |
b34976b6 | 3297 | return FALSE; |
252b5132 | 3298 | |
da9f89d4 | 3299 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3300 | return FALSE; |
252b5132 RH |
3301 | |
3302 | /* The backend linker builds symbol table information itself. */ | |
3303 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3304 | { | |
3305 | /* Non-zero if doing a relocatable link. */ | |
3306 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3307 | ||
3308 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3309 | return FALSE; |
252b5132 RH |
3310 | } |
3311 | ||
1126897b | 3312 | if (link_info == NULL) |
dbb410c3 | 3313 | { |
1126897b | 3314 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3315 | if (failed) |
b34976b6 | 3316 | return FALSE; |
dbb410c3 AM |
3317 | } |
3318 | ||
252b5132 RH |
3319 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3320 | /* sh_name was set in prep_headers. */ | |
3321 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3322 | shstrtab_hdr->sh_flags = 0; | |
3323 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3324 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3325 | shstrtab_hdr->sh_entsize = 0; |
3326 | shstrtab_hdr->sh_link = 0; | |
3327 | shstrtab_hdr->sh_info = 0; | |
3328 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3329 | shstrtab_hdr->sh_addralign = 1; | |
3330 | ||
c84fca4d | 3331 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3332 | return FALSE; |
252b5132 RH |
3333 | |
3334 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3335 | { | |
3336 | file_ptr off; | |
3337 | Elf_Internal_Shdr *hdr; | |
3338 | ||
3339 | off = elf_tdata (abfd)->next_file_pos; | |
3340 | ||
3341 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3342 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3343 | |
9ad5cbcf AM |
3344 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3345 | if (hdr->sh_size != 0) | |
b34976b6 | 3346 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3347 | |
252b5132 | 3348 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3349 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3350 | |
3351 | elf_tdata (abfd)->next_file_pos = off; | |
3352 | ||
3353 | /* Now that we know where the .strtab section goes, write it | |
3354 | out. */ | |
3355 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3356 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3357 | return FALSE; |
252b5132 RH |
3358 | _bfd_stringtab_free (strtab); |
3359 | } | |
3360 | ||
b34976b6 | 3361 | abfd->output_has_begun = TRUE; |
252b5132 | 3362 | |
b34976b6 | 3363 | return TRUE; |
252b5132 RH |
3364 | } |
3365 | ||
3366 | /* Create a mapping from a set of sections to a program segment. */ | |
3367 | ||
217aa764 AM |
3368 | static struct elf_segment_map * |
3369 | make_mapping (bfd *abfd, | |
3370 | asection **sections, | |
3371 | unsigned int from, | |
3372 | unsigned int to, | |
3373 | bfd_boolean phdr) | |
252b5132 RH |
3374 | { |
3375 | struct elf_segment_map *m; | |
3376 | unsigned int i; | |
3377 | asection **hdrpp; | |
dc810e39 | 3378 | bfd_size_type amt; |
252b5132 | 3379 | |
dc810e39 AM |
3380 | amt = sizeof (struct elf_segment_map); |
3381 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3382 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3383 | if (m == NULL) |
3384 | return NULL; | |
3385 | m->next = NULL; | |
3386 | m->p_type = PT_LOAD; | |
3387 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3388 | m->sections[i - from] = *hdrpp; | |
3389 | m->count = to - from; | |
3390 | ||
3391 | if (from == 0 && phdr) | |
3392 | { | |
3393 | /* Include the headers in the first PT_LOAD segment. */ | |
3394 | m->includes_filehdr = 1; | |
3395 | m->includes_phdrs = 1; | |
3396 | } | |
3397 | ||
3398 | return m; | |
3399 | } | |
3400 | ||
229fcec5 MM |
3401 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3402 | on failure. */ | |
3403 | ||
3404 | struct elf_segment_map * | |
3405 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3406 | { | |
3407 | struct elf_segment_map *m; | |
3408 | ||
3409 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3410 | if (m == NULL) | |
3411 | return NULL; | |
3412 | m->next = NULL; | |
3413 | m->p_type = PT_DYNAMIC; | |
3414 | m->count = 1; | |
3415 | m->sections[0] = dynsec; | |
3416 | ||
3417 | return m; | |
3418 | } | |
3419 | ||
252b5132 RH |
3420 | /* Set up a mapping from BFD sections to program segments. */ |
3421 | ||
b34976b6 | 3422 | static bfd_boolean |
217aa764 | 3423 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3424 | { |
3425 | asection **sections = NULL; | |
3426 | asection *s; | |
3427 | unsigned int i; | |
3428 | unsigned int count; | |
3429 | struct elf_segment_map *mfirst; | |
3430 | struct elf_segment_map **pm; | |
3431 | struct elf_segment_map *m; | |
3432 | asection *last_hdr; | |
baaff79e | 3433 | bfd_vma last_size; |
252b5132 RH |
3434 | unsigned int phdr_index; |
3435 | bfd_vma maxpagesize; | |
3436 | asection **hdrpp; | |
b34976b6 AM |
3437 | bfd_boolean phdr_in_segment = TRUE; |
3438 | bfd_boolean writable; | |
13ae64f3 JJ |
3439 | int tls_count = 0; |
3440 | asection *first_tls = NULL; | |
65765700 | 3441 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3442 | bfd_size_type amt; |
252b5132 RH |
3443 | |
3444 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3445 | return TRUE; |
252b5132 RH |
3446 | |
3447 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3448 | return TRUE; |
252b5132 RH |
3449 | |
3450 | /* Select the allocated sections, and sort them. */ | |
3451 | ||
dc810e39 | 3452 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
217aa764 | 3453 | sections = bfd_malloc (amt); |
252b5132 RH |
3454 | if (sections == NULL) |
3455 | goto error_return; | |
3456 | ||
3457 | i = 0; | |
3458 | for (s = abfd->sections; s != NULL; s = s->next) | |
3459 | { | |
3460 | if ((s->flags & SEC_ALLOC) != 0) | |
3461 | { | |
3462 | sections[i] = s; | |
3463 | ++i; | |
3464 | } | |
3465 | } | |
3466 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3467 | count = i; | |
3468 | ||
3469 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3470 | ||
3471 | /* Build the mapping. */ | |
3472 | ||
3473 | mfirst = NULL; | |
3474 | pm = &mfirst; | |
3475 | ||
3476 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3477 | the program headers and a PT_INTERP segment for the .interp | |
3478 | section. */ | |
3479 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3480 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3481 | { | |
dc810e39 | 3482 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3483 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3484 | if (m == NULL) |
3485 | goto error_return; | |
3486 | m->next = NULL; | |
3487 | m->p_type = PT_PHDR; | |
3488 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3489 | m->p_flags = PF_R | PF_X; | |
3490 | m->p_flags_valid = 1; | |
3491 | m->includes_phdrs = 1; | |
3492 | ||
3493 | *pm = m; | |
3494 | pm = &m->next; | |
3495 | ||
dc810e39 | 3496 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3497 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3498 | if (m == NULL) |
3499 | goto error_return; | |
3500 | m->next = NULL; | |
3501 | m->p_type = PT_INTERP; | |
3502 | m->count = 1; | |
3503 | m->sections[0] = s; | |
3504 | ||
3505 | *pm = m; | |
3506 | pm = &m->next; | |
3507 | } | |
3508 | ||
3509 | /* Look through the sections. We put sections in the same program | |
3510 | segment when the start of the second section can be placed within | |
3511 | a few bytes of the end of the first section. */ | |
3512 | last_hdr = NULL; | |
baaff79e | 3513 | last_size = 0; |
252b5132 RH |
3514 | phdr_index = 0; |
3515 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3516 | writable = FALSE; |
252b5132 RH |
3517 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3518 | if (dynsec != NULL | |
3519 | && (dynsec->flags & SEC_LOAD) == 0) | |
3520 | dynsec = NULL; | |
3521 | ||
3522 | /* Deal with -Ttext or something similar such that the first section | |
3523 | is not adjacent to the program headers. This is an | |
3524 | approximation, since at this point we don't know exactly how many | |
3525 | program headers we will need. */ | |
3526 | if (count > 0) | |
3527 | { | |
3528 | bfd_size_type phdr_size; | |
3529 | ||
3530 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3531 | if (phdr_size == 0) | |
3532 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3533 | if ((abfd->flags & D_PAGED) == 0 | |
3534 | || sections[0]->lma < phdr_size | |
3535 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3536 | phdr_in_segment = FALSE; |
252b5132 RH |
3537 | } |
3538 | ||
3539 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3540 | { | |
3541 | asection *hdr; | |
b34976b6 | 3542 | bfd_boolean new_segment; |
252b5132 RH |
3543 | |
3544 | hdr = *hdrpp; | |
3545 | ||
3546 | /* See if this section and the last one will fit in the same | |
3547 | segment. */ | |
3548 | ||
3549 | if (last_hdr == NULL) | |
3550 | { | |
3551 | /* If we don't have a segment yet, then we don't need a new | |
3552 | one (we build the last one after this loop). */ | |
b34976b6 | 3553 | new_segment = FALSE; |
252b5132 RH |
3554 | } |
3555 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3556 | { | |
3557 | /* If this section has a different relation between the | |
3558 | virtual address and the load address, then we need a new | |
3559 | segment. */ | |
b34976b6 | 3560 | new_segment = TRUE; |
252b5132 | 3561 | } |
baaff79e | 3562 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3563 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3564 | { | |
3565 | /* If putting this section in this segment would force us to | |
3566 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3567 | new_segment = TRUE; |
252b5132 | 3568 | } |
baaff79e JJ |
3569 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3570 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3571 | { |
3572 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3573 | nonloadable section in the same segment. |
3574 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3575 | new_segment = TRUE; |
252b5132 RH |
3576 | } |
3577 | else if ((abfd->flags & D_PAGED) == 0) | |
3578 | { | |
3579 | /* If the file is not demand paged, which means that we | |
3580 | don't require the sections to be correctly aligned in the | |
3581 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3582 | new_segment = FALSE; |
252b5132 RH |
3583 | } |
3584 | else if (! writable | |
3585 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3586 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3587 | & ~(maxpagesize - 1)) |
3588 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3589 | { |
3590 | /* We don't want to put a writable section in a read only | |
3591 | segment, unless they are on the same page in memory | |
3592 | anyhow. We already know that the last section does not | |
3593 | bring us past the current section on the page, so the | |
3594 | only case in which the new section is not on the same | |
3595 | page as the previous section is when the previous section | |
3596 | ends precisely on a page boundary. */ | |
b34976b6 | 3597 | new_segment = TRUE; |
252b5132 RH |
3598 | } |
3599 | else | |
3600 | { | |
3601 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3602 | new_segment = FALSE; |
252b5132 RH |
3603 | } |
3604 | ||
3605 | if (! new_segment) | |
3606 | { | |
3607 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3608 | writable = TRUE; |
baaff79e JJ |
3609 | last_hdr = hdr; |
3610 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3611 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3612 | last_size = hdr->size; |
baaff79e JJ |
3613 | else |
3614 | last_size = 0; | |
252b5132 RH |
3615 | continue; |
3616 | } | |
3617 | ||
3618 | /* We need a new program segment. We must create a new program | |
3619 | header holding all the sections from phdr_index until hdr. */ | |
3620 | ||
3621 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3622 | if (m == NULL) | |
3623 | goto error_return; | |
3624 | ||
3625 | *pm = m; | |
3626 | pm = &m->next; | |
3627 | ||
3628 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3629 | writable = TRUE; |
252b5132 | 3630 | else |
b34976b6 | 3631 | writable = FALSE; |
252b5132 RH |
3632 | |
3633 | last_hdr = hdr; | |
baaff79e JJ |
3634 | /* .tbss sections effectively have zero size. */ |
3635 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3636 | last_size = hdr->size; |
baaff79e JJ |
3637 | else |
3638 | last_size = 0; | |
252b5132 | 3639 | phdr_index = i; |
b34976b6 | 3640 | phdr_in_segment = FALSE; |
252b5132 RH |
3641 | } |
3642 | ||
3643 | /* Create a final PT_LOAD program segment. */ | |
3644 | if (last_hdr != NULL) | |
3645 | { | |
3646 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3647 | if (m == NULL) | |
3648 | goto error_return; | |
3649 | ||
3650 | *pm = m; | |
3651 | pm = &m->next; | |
3652 | } | |
3653 | ||
3654 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3655 | if (dynsec != NULL) | |
3656 | { | |
229fcec5 | 3657 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3658 | if (m == NULL) |
3659 | goto error_return; | |
252b5132 RH |
3660 | *pm = m; |
3661 | pm = &m->next; | |
3662 | } | |
3663 | ||
3664 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3665 | use bfd_get_section_by_name, because if we link together | |
3666 | nonloadable .note sections and loadable .note sections, we will | |
3667 | generate two .note sections in the output file. FIXME: Using | |
3668 | names for section types is bogus anyhow. */ | |
3669 | for (s = abfd->sections; s != NULL; s = s->next) | |
3670 | { | |
3671 | if ((s->flags & SEC_LOAD) != 0 | |
3672 | && strncmp (s->name, ".note", 5) == 0) | |
3673 | { | |
dc810e39 | 3674 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3675 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3676 | if (m == NULL) |
3677 | goto error_return; | |
3678 | m->next = NULL; | |
3679 | m->p_type = PT_NOTE; | |
3680 | m->count = 1; | |
3681 | m->sections[0] = s; | |
3682 | ||
3683 | *pm = m; | |
3684 | pm = &m->next; | |
3685 | } | |
13ae64f3 JJ |
3686 | if (s->flags & SEC_THREAD_LOCAL) |
3687 | { | |
3688 | if (! tls_count) | |
3689 | first_tls = s; | |
3690 | tls_count++; | |
3691 | } | |
3692 | } | |
3693 | ||
3694 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3695 | if (tls_count > 0) | |
3696 | { | |
3697 | int i; | |
3698 | ||
3699 | amt = sizeof (struct elf_segment_map); | |
3700 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3701 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3702 | if (m == NULL) |
3703 | goto error_return; | |
3704 | m->next = NULL; | |
3705 | m->p_type = PT_TLS; | |
3706 | m->count = tls_count; | |
3707 | /* Mandated PF_R. */ | |
3708 | m->p_flags = PF_R; | |
3709 | m->p_flags_valid = 1; | |
3710 | for (i = 0; i < tls_count; ++i) | |
3711 | { | |
3712 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3713 | m->sections[i] = first_tls; | |
3714 | first_tls = first_tls->next; | |
3715 | } | |
3716 | ||
3717 | *pm = m; | |
3718 | pm = &m->next; | |
252b5132 RH |
3719 | } |
3720 | ||
65765700 JJ |
3721 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3722 | segment. */ | |
126495ed AM |
3723 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3724 | if (eh_frame_hdr != NULL | |
3725 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3726 | { |
3727 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3728 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3729 | if (m == NULL) |
3730 | goto error_return; | |
3731 | m->next = NULL; | |
3732 | m->p_type = PT_GNU_EH_FRAME; | |
3733 | m->count = 1; | |
126495ed | 3734 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3735 | |
3736 | *pm = m; | |
3737 | pm = &m->next; | |
3738 | } | |
3739 | ||
9ee5e499 JJ |
3740 | if (elf_tdata (abfd)->stack_flags) |
3741 | { | |
3742 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3743 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3744 | if (m == NULL) |
3745 | goto error_return; | |
3746 | m->next = NULL; | |
3747 | m->p_type = PT_GNU_STACK; | |
3748 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3749 | m->p_flags_valid = 1; | |
3750 | ||
3751 | *pm = m; | |
3752 | pm = &m->next; | |
3753 | } | |
3754 | ||
8c37241b JJ |
3755 | if (elf_tdata (abfd)->relro) |
3756 | { | |
3757 | amt = sizeof (struct elf_segment_map); | |
3758 | m = bfd_zalloc (abfd, amt); | |
3759 | if (m == NULL) | |
3760 | goto error_return; | |
3761 | m->next = NULL; | |
3762 | m->p_type = PT_GNU_RELRO; | |
3763 | m->p_flags = PF_R; | |
3764 | m->p_flags_valid = 1; | |
3765 | ||
3766 | *pm = m; | |
3767 | pm = &m->next; | |
3768 | } | |
3769 | ||
252b5132 RH |
3770 | free (sections); |
3771 | sections = NULL; | |
3772 | ||
3773 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3774 | return TRUE; |
252b5132 RH |
3775 | |
3776 | error_return: | |
3777 | if (sections != NULL) | |
3778 | free (sections); | |
b34976b6 | 3779 | return FALSE; |
252b5132 RH |
3780 | } |
3781 | ||
3782 | /* Sort sections by address. */ | |
3783 | ||
3784 | static int | |
217aa764 | 3785 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3786 | { |
3787 | const asection *sec1 = *(const asection **) arg1; | |
3788 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3789 | bfd_size_type size1, size2; |
252b5132 RH |
3790 | |
3791 | /* Sort by LMA first, since this is the address used to | |
3792 | place the section into a segment. */ | |
3793 | if (sec1->lma < sec2->lma) | |
3794 | return -1; | |
3795 | else if (sec1->lma > sec2->lma) | |
3796 | return 1; | |
3797 | ||
3798 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3799 | the same, and this will do nothing. */ | |
3800 | if (sec1->vma < sec2->vma) | |
3801 | return -1; | |
3802 | else if (sec1->vma > sec2->vma) | |
3803 | return 1; | |
3804 | ||
3805 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3806 | ||
07c6e936 | 3807 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3808 | |
3809 | if (TOEND (sec1)) | |
3810 | { | |
3811 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3812 | { |
3813 | /* If the indicies are the same, do not return 0 | |
3814 | here, but continue to try the next comparison. */ | |
3815 | if (sec1->target_index - sec2->target_index != 0) | |
3816 | return sec1->target_index - sec2->target_index; | |
3817 | } | |
252b5132 RH |
3818 | else |
3819 | return 1; | |
3820 | } | |
00a7cdc5 | 3821 | else if (TOEND (sec2)) |
252b5132 RH |
3822 | return -1; |
3823 | ||
3824 | #undef TOEND | |
3825 | ||
00a7cdc5 NC |
3826 | /* Sort by size, to put zero sized sections |
3827 | before others at the same address. */ | |
252b5132 | 3828 | |
eea6121a AM |
3829 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3830 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3831 | |
3832 | if (size1 < size2) | |
252b5132 | 3833 | return -1; |
eecdbe52 | 3834 | if (size1 > size2) |
252b5132 RH |
3835 | return 1; |
3836 | ||
3837 | return sec1->target_index - sec2->target_index; | |
3838 | } | |
3839 | ||
340b6d91 AC |
3840 | /* Ian Lance Taylor writes: |
3841 | ||
3842 | We shouldn't be using % with a negative signed number. That's just | |
3843 | not good. We have to make sure either that the number is not | |
3844 | negative, or that the number has an unsigned type. When the types | |
3845 | are all the same size they wind up as unsigned. When file_ptr is a | |
3846 | larger signed type, the arithmetic winds up as signed long long, | |
3847 | which is wrong. | |
3848 | ||
3849 | What we're trying to say here is something like ``increase OFF by | |
3850 | the least amount that will cause it to be equal to the VMA modulo | |
3851 | the page size.'' */ | |
3852 | /* In other words, something like: | |
3853 | ||
3854 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
3855 | off_offset = off % bed->maxpagesize; | |
3856 | if (vma_offset < off_offset) | |
3857 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
3858 | else | |
3859 | adjustment = vma_offset - off_offset; | |
3860 | ||
3861 | which can can be collapsed into the expression below. */ | |
3862 | ||
3863 | static file_ptr | |
3864 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
3865 | { | |
3866 | return ((vma - off) % maxpagesize); | |
3867 | } | |
3868 | ||
252b5132 RH |
3869 | /* Assign file positions to the sections based on the mapping from |
3870 | sections to segments. This function also sets up some fields in | |
3871 | the file header, and writes out the program headers. */ | |
3872 | ||
b34976b6 | 3873 | static bfd_boolean |
c84fca4d | 3874 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3875 | { |
3876 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3877 | unsigned int count; | |
3878 | struct elf_segment_map *m; | |
3879 | unsigned int alloc; | |
3880 | Elf_Internal_Phdr *phdrs; | |
3881 | file_ptr off, voff; | |
3882 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
3883 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
3884 | Elf_Internal_Phdr *p; | |
dc810e39 | 3885 | bfd_size_type amt; |
252b5132 RH |
3886 | |
3887 | if (elf_tdata (abfd)->segment_map == NULL) | |
3888 | { | |
3889 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 3890 | return FALSE; |
252b5132 | 3891 | } |
1ed89aa9 NC |
3892 | else |
3893 | { | |
3894 | /* The placement algorithm assumes that non allocated sections are | |
3895 | not in PT_LOAD segments. We ensure this here by removing such | |
3896 | sections from the segment map. */ | |
3897 | for (m = elf_tdata (abfd)->segment_map; | |
3898 | m != NULL; | |
3899 | m = m->next) | |
3900 | { | |
3901 | unsigned int new_count; | |
3902 | unsigned int i; | |
3903 | ||
3904 | if (m->p_type != PT_LOAD) | |
3905 | continue; | |
3906 | ||
3907 | new_count = 0; | |
3908 | for (i = 0; i < m->count; i ++) | |
3909 | { | |
3910 | if ((m->sections[i]->flags & SEC_ALLOC) != 0) | |
3911 | { | |
47d9a591 | 3912 | if (i != new_count) |
1ed89aa9 NC |
3913 | m->sections[new_count] = m->sections[i]; |
3914 | ||
3915 | new_count ++; | |
3916 | } | |
3917 | } | |
3918 | ||
3919 | if (new_count != m->count) | |
3920 | m->count = new_count; | |
3921 | } | |
3922 | } | |
252b5132 RH |
3923 | |
3924 | if (bed->elf_backend_modify_segment_map) | |
3925 | { | |
c84fca4d | 3926 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 3927 | return FALSE; |
252b5132 RH |
3928 | } |
3929 | ||
3930 | count = 0; | |
3931 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
3932 | ++count; | |
3933 | ||
3934 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
3935 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
3936 | elf_elfheader (abfd)->e_phnum = count; | |
3937 | ||
3938 | if (count == 0) | |
0ebdbb83 BW |
3939 | { |
3940 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
3941 | return TRUE; | |
3942 | } | |
252b5132 RH |
3943 | |
3944 | /* If we already counted the number of program segments, make sure | |
3945 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
3946 | is used in a linker script. */ | |
3947 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
3948 | if (alloc != 0 && count > alloc) | |
3949 | { | |
3950 | ((*_bfd_error_handler) | |
b301b248 AM |
3951 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
3952 | abfd, alloc, count)); | |
252b5132 | 3953 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3954 | return FALSE; |
252b5132 RH |
3955 | } |
3956 | ||
3957 | if (alloc == 0) | |
3958 | alloc = count; | |
3959 | ||
dc810e39 | 3960 | amt = alloc * sizeof (Elf_Internal_Phdr); |
217aa764 | 3961 | phdrs = bfd_alloc (abfd, amt); |
252b5132 | 3962 | if (phdrs == NULL) |
b34976b6 | 3963 | return FALSE; |
252b5132 RH |
3964 | |
3965 | off = bed->s->sizeof_ehdr; | |
3966 | off += alloc * bed->s->sizeof_phdr; | |
3967 | ||
3968 | filehdr_vaddr = 0; | |
3969 | filehdr_paddr = 0; | |
3970 | phdrs_vaddr = 0; | |
3971 | phdrs_paddr = 0; | |
3972 | ||
3973 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
3974 | m != NULL; | |
3975 | m = m->next, p++) | |
3976 | { | |
3977 | unsigned int i; | |
3978 | asection **secpp; | |
3979 | ||
3980 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 3981 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
3982 | not be done to the PT_NOTE section of a corefile, which may |
3983 | contain several pseudo-sections artificially created by bfd. | |
3984 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
3985 | if (m->count > 1 |
3986 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 3987 | && m->p_type == PT_NOTE)) |
252b5132 RH |
3988 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
3989 | elf_sort_sections); | |
3990 | ||
b301b248 AM |
3991 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
3992 | number of sections with contents contributing to both p_filesz | |
3993 | and p_memsz, followed by a number of sections with no contents | |
3994 | that just contribute to p_memsz. In this loop, OFF tracks next | |
3995 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
3996 | an adjustment we use for segments that have no file contents | |
3997 | but need zero filled memory allocation. */ | |
3998 | voff = 0; | |
252b5132 | 3999 | p->p_type = m->p_type; |
28a7f3e7 | 4000 | p->p_flags = m->p_flags; |
252b5132 RH |
4001 | |
4002 | if (p->p_type == PT_LOAD | |
b301b248 | 4003 | && m->count > 0) |
252b5132 | 4004 | { |
b301b248 AM |
4005 | bfd_size_type align; |
4006 | bfd_vma adjust; | |
4007 | ||
252b5132 | 4008 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 | 4009 | align = bed->maxpagesize; |
252b5132 RH |
4010 | else |
4011 | { | |
b301b248 | 4012 | unsigned int align_power = 0; |
252b5132 RH |
4013 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4014 | { | |
b301b248 | 4015 | unsigned int secalign; |
252b5132 RH |
4016 | |
4017 | secalign = bfd_get_section_alignment (abfd, *secpp); | |
b301b248 AM |
4018 | if (secalign > align_power) |
4019 | align_power = secalign; | |
252b5132 | 4020 | } |
b301b248 AM |
4021 | align = (bfd_size_type) 1 << align_power; |
4022 | } | |
252b5132 | 4023 | |
b301b248 AM |
4024 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4025 | off += adjust; | |
4026 | if (adjust != 0 | |
4027 | && !m->includes_filehdr | |
4028 | && !m->includes_phdrs | |
4029 | && (ufile_ptr) off >= align) | |
4030 | { | |
4031 | /* If the first section isn't loadable, the same holds for | |
4032 | any other sections. Since the segment won't need file | |
4033 | space, we can make p_offset overlap some prior segment. | |
4034 | However, .tbss is special. If a segment starts with | |
4035 | .tbss, we need to look at the next section to decide | |
4036 | whether the segment has any loadable sections. */ | |
4037 | i = 0; | |
5efb6261 | 4038 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4039 | { |
4040 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4041 | || ++i >= m->count) | |
4042 | { | |
4043 | off -= adjust; | |
4044 | voff = adjust - align; | |
4045 | break; | |
4046 | } | |
4047 | } | |
252b5132 RH |
4048 | } |
4049 | } | |
b1a6d0b1 NC |
4050 | /* Make sure the .dynamic section is the first section in the |
4051 | PT_DYNAMIC segment. */ | |
4052 | else if (p->p_type == PT_DYNAMIC | |
4053 | && m->count > 1 | |
4054 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4055 | { | |
4056 | _bfd_error_handler | |
b301b248 AM |
4057 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4058 | abfd); | |
b1a6d0b1 NC |
4059 | bfd_set_error (bfd_error_bad_value); |
4060 | return FALSE; | |
4061 | } | |
252b5132 RH |
4062 | |
4063 | if (m->count == 0) | |
4064 | p->p_vaddr = 0; | |
4065 | else | |
4066 | p->p_vaddr = m->sections[0]->vma; | |
4067 | ||
4068 | if (m->p_paddr_valid) | |
4069 | p->p_paddr = m->p_paddr; | |
4070 | else if (m->count == 0) | |
4071 | p->p_paddr = 0; | |
4072 | else | |
4073 | p->p_paddr = m->sections[0]->lma; | |
4074 | ||
4075 | if (p->p_type == PT_LOAD | |
4076 | && (abfd->flags & D_PAGED) != 0) | |
4077 | p->p_align = bed->maxpagesize; | |
4078 | else if (m->count == 0) | |
45d6a902 | 4079 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4080 | else |
4081 | p->p_align = 0; | |
4082 | ||
4083 | p->p_offset = 0; | |
4084 | p->p_filesz = 0; | |
4085 | p->p_memsz = 0; | |
4086 | ||
4087 | if (m->includes_filehdr) | |
4088 | { | |
4089 | if (! m->p_flags_valid) | |
4090 | p->p_flags |= PF_R; | |
4091 | p->p_offset = 0; | |
4092 | p->p_filesz = bed->s->sizeof_ehdr; | |
4093 | p->p_memsz = bed->s->sizeof_ehdr; | |
4094 | if (m->count > 0) | |
4095 | { | |
4096 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4097 | ||
4098 | if (p->p_vaddr < (bfd_vma) off) | |
4099 | { | |
caf47ea6 | 4100 | (*_bfd_error_handler) |
b301b248 AM |
4101 | (_("%B: Not enough room for program headers, try linking with -N"), |
4102 | abfd); | |
252b5132 | 4103 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4104 | return FALSE; |
252b5132 RH |
4105 | } |
4106 | ||
4107 | p->p_vaddr -= off; | |
4108 | if (! m->p_paddr_valid) | |
4109 | p->p_paddr -= off; | |
4110 | } | |
4111 | if (p->p_type == PT_LOAD) | |
4112 | { | |
4113 | filehdr_vaddr = p->p_vaddr; | |
4114 | filehdr_paddr = p->p_paddr; | |
4115 | } | |
4116 | } | |
4117 | ||
4118 | if (m->includes_phdrs) | |
4119 | { | |
4120 | if (! m->p_flags_valid) | |
4121 | p->p_flags |= PF_R; | |
4122 | ||
4123 | if (m->includes_filehdr) | |
4124 | { | |
4125 | if (p->p_type == PT_LOAD) | |
4126 | { | |
4127 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4128 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4129 | } | |
4130 | } | |
4131 | else | |
4132 | { | |
4133 | p->p_offset = bed->s->sizeof_ehdr; | |
4134 | ||
4135 | if (m->count > 0) | |
4136 | { | |
4137 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4138 | p->p_vaddr -= off - p->p_offset; | |
4139 | if (! m->p_paddr_valid) | |
4140 | p->p_paddr -= off - p->p_offset; | |
4141 | } | |
4142 | ||
4143 | if (p->p_type == PT_LOAD) | |
4144 | { | |
4145 | phdrs_vaddr = p->p_vaddr; | |
4146 | phdrs_paddr = p->p_paddr; | |
4147 | } | |
4148 | else | |
4149 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4150 | } | |
4151 | ||
4152 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4153 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4154 | } | |
4155 | ||
4156 | if (p->p_type == PT_LOAD | |
4157 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4158 | { | |
4159 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4160 | p->p_offset = off + voff; |
252b5132 RH |
4161 | else |
4162 | { | |
4163 | file_ptr adjust; | |
4164 | ||
4165 | adjust = off - (p->p_offset + p->p_filesz); | |
4166 | p->p_filesz += adjust; | |
4167 | p->p_memsz += adjust; | |
4168 | } | |
4169 | } | |
4170 | ||
252b5132 RH |
4171 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4172 | { | |
4173 | asection *sec; | |
4174 | flagword flags; | |
4175 | bfd_size_type align; | |
4176 | ||
4177 | sec = *secpp; | |
4178 | flags = sec->flags; | |
4179 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4180 | ||
b301b248 AM |
4181 | if (p->p_type == PT_LOAD |
4182 | || p->p_type == PT_TLS) | |
252b5132 RH |
4183 | { |
4184 | bfd_signed_vma adjust; | |
4185 | ||
5efb6261 | 4186 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4187 | { |
b301b248 | 4188 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4189 | if (adjust < 0) |
b301b248 AM |
4190 | { |
4191 | (*_bfd_error_handler) | |
4192 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4193 | abfd, sec, (unsigned long) sec->lma); | |
4194 | adjust = 0; | |
4195 | } | |
4196 | off += adjust; | |
4197 | p->p_filesz += adjust; | |
4198 | p->p_memsz += adjust; | |
252b5132 | 4199 | } |
b301b248 AM |
4200 | /* .tbss is special. It doesn't contribute to p_memsz of |
4201 | normal segments. */ | |
4202 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4203 | || p->p_type == PT_TLS) | |
252b5132 RH |
4204 | { |
4205 | /* The section VMA must equal the file position | |
b301b248 AM |
4206 | modulo the page size. */ |
4207 | bfd_size_type page = align; | |
252b5132 | 4208 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 AM |
4209 | page = bed->maxpagesize; |
4210 | adjust = vma_page_aligned_bias (sec->vma, | |
4211 | p->p_vaddr + p->p_memsz, | |
4212 | page); | |
252b5132 | 4213 | p->p_memsz += adjust; |
252b5132 | 4214 | } |
252b5132 RH |
4215 | } |
4216 | ||
4217 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4218 | { | |
b301b248 AM |
4219 | /* The section at i == 0 is the one that actually contains |
4220 | everything. */ | |
4a938328 MS |
4221 | if (i == 0) |
4222 | { | |
252b5132 | 4223 | sec->filepos = off; |
eea6121a | 4224 | off += sec->size; |
b301b248 AM |
4225 | p->p_filesz = sec->size; |
4226 | p->p_memsz = 0; | |
4227 | p->p_align = 1; | |
252b5132 | 4228 | } |
4a938328 | 4229 | else |
252b5132 | 4230 | { |
b301b248 | 4231 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4232 | sec->filepos = 0; |
eea6121a | 4233 | sec->size = 0; |
b301b248 AM |
4234 | sec->flags = 0; |
4235 | continue; | |
252b5132 | 4236 | } |
252b5132 RH |
4237 | } |
4238 | else | |
4239 | { | |
b301b248 AM |
4240 | if (p->p_type == PT_LOAD) |
4241 | { | |
4242 | sec->filepos = off; | |
5efb6261 AM |
4243 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4244 | 1997, and the exact reason for it isn't clear. One | |
4245 | plausible explanation is that it is to work around | |
4246 | a problem we have with linker scripts using data | |
4247 | statements in NOLOAD sections. I don't think it | |
4248 | makes a great deal of sense to have such a section | |
4249 | assigned to a PT_LOAD segment, but apparently | |
4250 | people do this. The data statement results in a | |
4251 | bfd_data_link_order being built, and these need | |
4252 | section contents to write into. Eventually, we get | |
4253 | to _bfd_elf_write_object_contents which writes any | |
4254 | section with contents to the output. Make room | |
4255 | here for the write, so that following segments are | |
4256 | not trashed. */ | |
4257 | if ((flags & SEC_LOAD) != 0 | |
4258 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4259 | off += sec->size; |
4260 | } | |
252b5132 | 4261 | |
5efb6261 | 4262 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4263 | { |
4264 | p->p_filesz += sec->size; | |
4265 | p->p_memsz += sec->size; | |
4266 | } | |
4b6c0f2f NC |
4267 | /* PR ld/594: Sections in note segments which are not loaded |
4268 | contribute to the file size but not the in-memory size. */ | |
4269 | else if (p->p_type == PT_NOTE | |
4270 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4271 | p->p_filesz += sec->size; | |
4272 | ||
b301b248 AM |
4273 | /* .tbss is special. It doesn't contribute to p_memsz of |
4274 | normal segments. */ | |
4275 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4276 | || p->p_type == PT_TLS) | |
4277 | p->p_memsz += sec->size; | |
252b5132 | 4278 | |
13ae64f3 | 4279 | if (p->p_type == PT_TLS |
eea6121a | 4280 | && sec->size == 0 |
13ae64f3 JJ |
4281 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4282 | { | |
4283 | struct bfd_link_order *o; | |
4284 | bfd_vma tbss_size = 0; | |
4285 | ||
4286 | for (o = sec->link_order_head; o != NULL; o = o->next) | |
4287 | if (tbss_size < o->offset + o->size) | |
4288 | tbss_size = o->offset + o->size; | |
4289 | ||
4290 | p->p_memsz += tbss_size; | |
4291 | } | |
4292 | ||
252b5132 RH |
4293 | if (align > p->p_align |
4294 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4295 | p->p_align = align; | |
4296 | } | |
4297 | ||
4298 | if (! m->p_flags_valid) | |
4299 | { | |
4300 | p->p_flags |= PF_R; | |
4301 | if ((flags & SEC_CODE) != 0) | |
4302 | p->p_flags |= PF_X; | |
4303 | if ((flags & SEC_READONLY) == 0) | |
4304 | p->p_flags |= PF_W; | |
4305 | } | |
4306 | } | |
4307 | } | |
4308 | ||
4309 | /* Now that we have set the section file positions, we can set up | |
4310 | the file positions for the non PT_LOAD segments. */ | |
4311 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4312 | m != NULL; | |
4313 | m = m->next, p++) | |
4314 | { | |
4315 | if (p->p_type != PT_LOAD && m->count > 0) | |
4316 | { | |
4317 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4318 | /* If the section has not yet been assigned a file position, |
4319 | do so now. The ARM BPABI requires that .dynamic section | |
4320 | not be marked SEC_ALLOC because it is not part of any | |
4321 | PT_LOAD segment, so it will not be processed above. */ | |
4322 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4323 | { | |
4324 | unsigned int i; | |
4325 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4326 | ||
4327 | i = 1; | |
4328 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4329 | ++i; | |
4330 | off = (_bfd_elf_assign_file_position_for_section | |
4331 | (i_shdrpp[i], off, TRUE)); | |
4332 | p->p_filesz = m->sections[0]->size; | |
4333 | } | |
252b5132 RH |
4334 | p->p_offset = m->sections[0]->filepos; |
4335 | } | |
4336 | if (m->count == 0) | |
4337 | { | |
4338 | if (m->includes_filehdr) | |
4339 | { | |
4340 | p->p_vaddr = filehdr_vaddr; | |
4341 | if (! m->p_paddr_valid) | |
4342 | p->p_paddr = filehdr_paddr; | |
4343 | } | |
4344 | else if (m->includes_phdrs) | |
4345 | { | |
4346 | p->p_vaddr = phdrs_vaddr; | |
4347 | if (! m->p_paddr_valid) | |
4348 | p->p_paddr = phdrs_paddr; | |
4349 | } | |
8c37241b JJ |
4350 | else if (p->p_type == PT_GNU_RELRO) |
4351 | { | |
4352 | Elf_Internal_Phdr *lp; | |
4353 | ||
4354 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4355 | { | |
4356 | if (lp->p_type == PT_LOAD | |
4357 | && lp->p_vaddr <= link_info->relro_end | |
4358 | && lp->p_vaddr >= link_info->relro_start | |
4359 | && lp->p_vaddr + lp->p_filesz | |
4360 | >= link_info->relro_end) | |
4361 | break; | |
4362 | } | |
4363 | ||
4364 | if (lp < phdrs + count | |
4365 | && link_info->relro_end > lp->p_vaddr) | |
4366 | { | |
4367 | p->p_vaddr = lp->p_vaddr; | |
4368 | p->p_paddr = lp->p_paddr; | |
4369 | p->p_offset = lp->p_offset; | |
4370 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4371 | p->p_memsz = p->p_filesz; | |
4372 | p->p_align = 1; | |
4373 | p->p_flags = (lp->p_flags & ~PF_W); | |
4374 | } | |
4375 | else | |
4376 | { | |
4377 | memset (p, 0, sizeof *p); | |
4378 | p->p_type = PT_NULL; | |
4379 | } | |
4380 | } | |
252b5132 RH |
4381 | } |
4382 | } | |
4383 | ||
4384 | /* Clear out any program headers we allocated but did not use. */ | |
4385 | for (; count < alloc; count++, p++) | |
4386 | { | |
4387 | memset (p, 0, sizeof *p); | |
4388 | p->p_type = PT_NULL; | |
4389 | } | |
4390 | ||
4391 | elf_tdata (abfd)->phdr = phdrs; | |
4392 | ||
4393 | elf_tdata (abfd)->next_file_pos = off; | |
4394 | ||
4395 | /* Write out the program headers. */ | |
dc810e39 | 4396 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4397 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4398 | return FALSE; |
252b5132 | 4399 | |
b34976b6 | 4400 | return TRUE; |
252b5132 RH |
4401 | } |
4402 | ||
4403 | /* Get the size of the program header. | |
4404 | ||
4405 | If this is called by the linker before any of the section VMA's are set, it | |
4406 | can't calculate the correct value for a strange memory layout. This only | |
4407 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4408 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4409 | data segment (exclusive of .interp and .dynamic). | |
4410 | ||
4411 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4412 | will be two segments. */ | |
4413 | ||
4414 | static bfd_size_type | |
217aa764 | 4415 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4416 | { |
4417 | size_t segs; | |
4418 | asection *s; | |
9c5bfbb7 | 4419 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4420 | |
4421 | /* We can't return a different result each time we're called. */ | |
4422 | if (elf_tdata (abfd)->program_header_size != 0) | |
4423 | return elf_tdata (abfd)->program_header_size; | |
4424 | ||
4425 | if (elf_tdata (abfd)->segment_map != NULL) | |
4426 | { | |
4427 | struct elf_segment_map *m; | |
4428 | ||
4429 | segs = 0; | |
4430 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4431 | ++segs; | |
4432 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4433 | return elf_tdata (abfd)->program_header_size; | |
4434 | } | |
4435 | ||
4436 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4437 | and one for data. */ | |
4438 | segs = 2; | |
4439 | ||
4440 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4441 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4442 | { | |
4443 | /* If we have a loadable interpreter section, we need a | |
4444 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4445 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4446 | targets. */ |
4447 | segs += 2; | |
4448 | } | |
4449 | ||
4450 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4451 | { | |
4452 | /* We need a PT_DYNAMIC segment. */ | |
4453 | ++segs; | |
4454 | } | |
4455 | ||
126495ed | 4456 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4457 | { |
4458 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4459 | ++segs; | |
4460 | } | |
4461 | ||
9ee5e499 JJ |
4462 | if (elf_tdata (abfd)->stack_flags) |
4463 | { | |
4464 | /* We need a PT_GNU_STACK segment. */ | |
4465 | ++segs; | |
4466 | } | |
4467 | ||
8c37241b JJ |
4468 | if (elf_tdata (abfd)->relro) |
4469 | { | |
4470 | /* We need a PT_GNU_RELRO segment. */ | |
4471 | ++segs; | |
4472 | } | |
4473 | ||
252b5132 RH |
4474 | for (s = abfd->sections; s != NULL; s = s->next) |
4475 | { | |
4476 | if ((s->flags & SEC_LOAD) != 0 | |
4477 | && strncmp (s->name, ".note", 5) == 0) | |
4478 | { | |
4479 | /* We need a PT_NOTE segment. */ | |
4480 | ++segs; | |
4481 | } | |
4482 | } | |
4483 | ||
13ae64f3 JJ |
4484 | for (s = abfd->sections; s != NULL; s = s->next) |
4485 | { | |
4486 | if (s->flags & SEC_THREAD_LOCAL) | |
4487 | { | |
4488 | /* We need a PT_TLS segment. */ | |
4489 | ++segs; | |
4490 | break; | |
4491 | } | |
4492 | } | |
4493 | ||
252b5132 RH |
4494 | /* Let the backend count up any program headers it might need. */ |
4495 | if (bed->elf_backend_additional_program_headers) | |
4496 | { | |
4497 | int a; | |
4498 | ||
4499 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4500 | if (a == -1) | |
4501 | abort (); | |
4502 | segs += a; | |
4503 | } | |
4504 | ||
4505 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4506 | return elf_tdata (abfd)->program_header_size; | |
4507 | } | |
4508 | ||
4509 | /* Work out the file positions of all the sections. This is called by | |
4510 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4511 | VMAs must be known before this is called. | |
4512 | ||
e0638f70 AM |
4513 | Reloc sections come in two flavours: Those processed specially as |
4514 | "side-channel" data attached to a section to which they apply, and | |
4515 | those that bfd doesn't process as relocations. The latter sort are | |
4516 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4517 | consider the former sort here, unless they form part of the loadable | |
4518 | image. Reloc sections not assigned here will be handled later by | |
4519 | assign_file_positions_for_relocs. | |
252b5132 RH |
4520 | |
4521 | We also don't set the positions of the .symtab and .strtab here. */ | |
4522 | ||
b34976b6 | 4523 | static bfd_boolean |
c84fca4d AO |
4524 | assign_file_positions_except_relocs (bfd *abfd, |
4525 | struct bfd_link_info *link_info) | |
252b5132 RH |
4526 | { |
4527 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4528 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4529 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4530 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4531 | file_ptr off; |
9c5bfbb7 | 4532 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4533 | |
4534 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4535 | && bfd_get_format (abfd) != bfd_core) | |
4536 | { | |
4537 | Elf_Internal_Shdr **hdrpp; | |
4538 | unsigned int i; | |
4539 | ||
4540 | /* Start after the ELF header. */ | |
4541 | off = i_ehdrp->e_ehsize; | |
4542 | ||
4543 | /* We are not creating an executable, which means that we are | |
4544 | not creating a program header, and that the actual order of | |
4545 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4546 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4547 | { |
4548 | Elf_Internal_Shdr *hdr; | |
4549 | ||
4550 | hdr = *hdrpp; | |
e0638f70 AM |
4551 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4552 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4553 | || i == tdata->symtab_section |
4554 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4555 | || i == tdata->strtab_section) |
4556 | { | |
4557 | hdr->sh_offset = -1; | |
252b5132 | 4558 | } |
9ad5cbcf | 4559 | else |
b34976b6 | 4560 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4561 | |
9ad5cbcf AM |
4562 | if (i == SHN_LORESERVE - 1) |
4563 | { | |
4564 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4565 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4566 | } | |
252b5132 RH |
4567 | } |
4568 | } | |
4569 | else | |
4570 | { | |
4571 | unsigned int i; | |
4572 | Elf_Internal_Shdr **hdrpp; | |
4573 | ||
4574 | /* Assign file positions for the loaded sections based on the | |
4575 | assignment of sections to segments. */ | |
c84fca4d | 4576 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4577 | return FALSE; |
252b5132 RH |
4578 | |
4579 | /* Assign file positions for the other sections. */ | |
4580 | ||
4581 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4582 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4583 | { |
4584 | Elf_Internal_Shdr *hdr; | |
4585 | ||
4586 | hdr = *hdrpp; | |
4587 | if (hdr->bfd_section != NULL | |
4588 | && hdr->bfd_section->filepos != 0) | |
4589 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4590 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4591 | { | |
4592 | ((*_bfd_error_handler) | |
b301b248 AM |
4593 | (_("%B: warning: allocated section `%s' not in segment"), |
4594 | abfd, | |
252b5132 RH |
4595 | (hdr->bfd_section == NULL |
4596 | ? "*unknown*" | |
4597 | : hdr->bfd_section->name))); | |
4598 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4599 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4600 | bed->maxpagesize); | |
252b5132 | 4601 | else |
340b6d91 AC |
4602 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4603 | hdr->sh_addralign); | |
252b5132 | 4604 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4605 | FALSE); |
252b5132 | 4606 | } |
e0638f70 AM |
4607 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4608 | && hdr->bfd_section == NULL) | |
252b5132 | 4609 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4610 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4611 | || hdr == i_shdrpp[tdata->strtab_section]) |
4612 | hdr->sh_offset = -1; | |
4613 | else | |
b34976b6 | 4614 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4615 | |
4616 | if (i == SHN_LORESERVE - 1) | |
4617 | { | |
4618 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4619 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4620 | } | |
252b5132 RH |
4621 | } |
4622 | } | |
4623 | ||
4624 | /* Place the section headers. */ | |
45d6a902 | 4625 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4626 | i_ehdrp->e_shoff = off; |
4627 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4628 | ||
4629 | elf_tdata (abfd)->next_file_pos = off; | |
4630 | ||
b34976b6 | 4631 | return TRUE; |
252b5132 RH |
4632 | } |
4633 | ||
b34976b6 | 4634 | static bfd_boolean |
217aa764 | 4635 | prep_headers (bfd *abfd) |
252b5132 RH |
4636 | { |
4637 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4638 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4639 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4640 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4641 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4642 | |
4643 | i_ehdrp = elf_elfheader (abfd); | |
4644 | i_shdrp = elf_elfsections (abfd); | |
4645 | ||
2b0f7ef9 | 4646 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4647 | if (shstrtab == NULL) |
b34976b6 | 4648 | return FALSE; |
252b5132 RH |
4649 | |
4650 | elf_shstrtab (abfd) = shstrtab; | |
4651 | ||
4652 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4653 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4654 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4655 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4656 | ||
4657 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4658 | i_ehdrp->e_ident[EI_DATA] = | |
4659 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4660 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4661 | ||
252b5132 RH |
4662 | if ((abfd->flags & DYNAMIC) != 0) |
4663 | i_ehdrp->e_type = ET_DYN; | |
4664 | else if ((abfd->flags & EXEC_P) != 0) | |
4665 | i_ehdrp->e_type = ET_EXEC; | |
4666 | else if (bfd_get_format (abfd) == bfd_core) | |
4667 | i_ehdrp->e_type = ET_CORE; | |
4668 | else | |
4669 | i_ehdrp->e_type = ET_REL; | |
4670 | ||
4671 | switch (bfd_get_arch (abfd)) | |
4672 | { | |
4673 | case bfd_arch_unknown: | |
4674 | i_ehdrp->e_machine = EM_NONE; | |
4675 | break; | |
aa4f99bb AO |
4676 | |
4677 | /* There used to be a long list of cases here, each one setting | |
4678 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4679 | in the corresponding bfd definition. To avoid duplication, | |
4680 | the switch was removed. Machines that need special handling | |
4681 | can generally do it in elf_backend_final_write_processing(), | |
4682 | unless they need the information earlier than the final write. | |
4683 | Such need can generally be supplied by replacing the tests for | |
4684 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4685 | default: |
9c5bfbb7 AM |
4686 | i_ehdrp->e_machine = bed->elf_machine_code; |
4687 | } | |
aa4f99bb | 4688 | |
252b5132 RH |
4689 | i_ehdrp->e_version = bed->s->ev_current; |
4690 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4691 | ||
c044fabd | 4692 | /* No program header, for now. */ |
252b5132 RH |
4693 | i_ehdrp->e_phoff = 0; |
4694 | i_ehdrp->e_phentsize = 0; | |
4695 | i_ehdrp->e_phnum = 0; | |
4696 | ||
c044fabd | 4697 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4698 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4699 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4700 | ||
c044fabd | 4701 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4702 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4703 | /* It all happens later. */ |
4704 | ; | |
252b5132 RH |
4705 | else |
4706 | { | |
4707 | i_ehdrp->e_phentsize = 0; | |
4708 | i_phdrp = 0; | |
4709 | i_ehdrp->e_phoff = 0; | |
4710 | } | |
4711 | ||
4712 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4713 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4714 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4715 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4716 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4717 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4718 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4719 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4720 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4721 | return FALSE; |
252b5132 | 4722 | |
b34976b6 | 4723 | return TRUE; |
252b5132 RH |
4724 | } |
4725 | ||
4726 | /* Assign file positions for all the reloc sections which are not part | |
4727 | of the loadable file image. */ | |
4728 | ||
4729 | void | |
217aa764 | 4730 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4731 | { |
4732 | file_ptr off; | |
9ad5cbcf | 4733 | unsigned int i, num_sec; |
252b5132 RH |
4734 | Elf_Internal_Shdr **shdrpp; |
4735 | ||
4736 | off = elf_tdata (abfd)->next_file_pos; | |
4737 | ||
9ad5cbcf AM |
4738 | num_sec = elf_numsections (abfd); |
4739 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4740 | { |
4741 | Elf_Internal_Shdr *shdrp; | |
4742 | ||
4743 | shdrp = *shdrpp; | |
4744 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4745 | && shdrp->sh_offset == -1) | |
b34976b6 | 4746 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4747 | } |
4748 | ||
4749 | elf_tdata (abfd)->next_file_pos = off; | |
4750 | } | |
4751 | ||
b34976b6 | 4752 | bfd_boolean |
217aa764 | 4753 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4754 | { |
9c5bfbb7 | 4755 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4756 | Elf_Internal_Ehdr *i_ehdrp; |
4757 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4758 | bfd_boolean failed; |
9ad5cbcf | 4759 | unsigned int count, num_sec; |
252b5132 RH |
4760 | |
4761 | if (! abfd->output_has_begun | |
217aa764 | 4762 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4763 | return FALSE; |
252b5132 RH |
4764 | |
4765 | i_shdrp = elf_elfsections (abfd); | |
4766 | i_ehdrp = elf_elfheader (abfd); | |
4767 | ||
b34976b6 | 4768 | failed = FALSE; |
252b5132 RH |
4769 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4770 | if (failed) | |
b34976b6 | 4771 | return FALSE; |
252b5132 RH |
4772 | |
4773 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4774 | ||
c044fabd | 4775 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4776 | num_sec = elf_numsections (abfd); |
4777 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4778 | { |
4779 | if (bed->elf_backend_section_processing) | |
4780 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4781 | if (i_shdrp[count]->contents) | |
4782 | { | |
dc810e39 AM |
4783 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4784 | ||
252b5132 | 4785 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4786 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4787 | return FALSE; |
252b5132 | 4788 | } |
9ad5cbcf AM |
4789 | if (count == SHN_LORESERVE - 1) |
4790 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4791 | } |
4792 | ||
4793 | /* Write out the section header names. */ | |
4794 | if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
2b0f7ef9 | 4795 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))) |
b34976b6 | 4796 | return FALSE; |
252b5132 RH |
4797 | |
4798 | if (bed->elf_backend_final_write_processing) | |
4799 | (*bed->elf_backend_final_write_processing) (abfd, | |
4800 | elf_tdata (abfd)->linker); | |
4801 | ||
4802 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4803 | } | |
4804 | ||
b34976b6 | 4805 | bfd_boolean |
217aa764 | 4806 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4807 | { |
c044fabd | 4808 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4809 | return _bfd_elf_write_object_contents (abfd); |
4810 | } | |
c044fabd KH |
4811 | |
4812 | /* Given a section, search the header to find them. */ | |
4813 | ||
252b5132 | 4814 | int |
198beae2 | 4815 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4816 | { |
9c5bfbb7 | 4817 | const struct elf_backend_data *bed; |
252b5132 | 4818 | int index; |
252b5132 | 4819 | |
9ad5cbcf AM |
4820 | if (elf_section_data (asect) != NULL |
4821 | && elf_section_data (asect)->this_idx != 0) | |
4822 | return elf_section_data (asect)->this_idx; | |
4823 | ||
4824 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4825 | index = SHN_ABS; |
4826 | else if (bfd_is_com_section (asect)) | |
4827 | index = SHN_COMMON; | |
4828 | else if (bfd_is_und_section (asect)) | |
4829 | index = SHN_UNDEF; | |
4830 | else | |
6dc132d9 | 4831 | index = -1; |
252b5132 | 4832 | |
af746e92 | 4833 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4834 | if (bed->elf_backend_section_from_bfd_section) |
4835 | { | |
af746e92 | 4836 | int retval = index; |
9ad5cbcf | 4837 | |
af746e92 AM |
4838 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4839 | return retval; | |
252b5132 RH |
4840 | } |
4841 | ||
af746e92 AM |
4842 | if (index == -1) |
4843 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4844 | |
af746e92 | 4845 | return index; |
252b5132 RH |
4846 | } |
4847 | ||
4848 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4849 | on error. */ | |
4850 | ||
4851 | int | |
217aa764 | 4852 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4853 | { |
4854 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4855 | int idx; | |
4856 | flagword flags = asym_ptr->flags; | |
4857 | ||
4858 | /* When gas creates relocations against local labels, it creates its | |
4859 | own symbol for the section, but does put the symbol into the | |
4860 | symbol chain, so udata is 0. When the linker is generating | |
4861 | relocatable output, this section symbol may be for one of the | |
4862 | input sections rather than the output section. */ | |
4863 | if (asym_ptr->udata.i == 0 | |
4864 | && (flags & BSF_SECTION_SYM) | |
4865 | && asym_ptr->section) | |
4866 | { | |
4867 | int indx; | |
4868 | ||
4869 | if (asym_ptr->section->output_section != NULL) | |
4870 | indx = asym_ptr->section->output_section->index; | |
4871 | else | |
4872 | indx = asym_ptr->section->index; | |
4e89ac30 L |
4873 | if (indx < elf_num_section_syms (abfd) |
4874 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
4875 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
4876 | } | |
4877 | ||
4878 | idx = asym_ptr->udata.i; | |
4879 | ||
4880 | if (idx == 0) | |
4881 | { | |
4882 | /* This case can occur when using --strip-symbol on a symbol | |
4883 | which is used in a relocation entry. */ | |
4884 | (*_bfd_error_handler) | |
d003868e AM |
4885 | (_("%B: symbol `%s' required but not present"), |
4886 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
4887 | bfd_set_error (bfd_error_no_symbols); |
4888 | return -1; | |
4889 | } | |
4890 | ||
4891 | #if DEBUG & 4 | |
4892 | { | |
4893 | fprintf (stderr, | |
661a3fd4 | 4894 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
4895 | (long) asym_ptr, asym_ptr->name, idx, flags, |
4896 | elf_symbol_flags (flags)); | |
4897 | fflush (stderr); | |
4898 | } | |
4899 | #endif | |
4900 | ||
4901 | return idx; | |
4902 | } | |
4903 | ||
4904 | /* Copy private BFD data. This copies any program header information. */ | |
4905 | ||
b34976b6 | 4906 | static bfd_boolean |
217aa764 | 4907 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 4908 | { |
b34976b6 AM |
4909 | Elf_Internal_Ehdr *iehdr; |
4910 | struct elf_segment_map *map; | |
4911 | struct elf_segment_map *map_first; | |
4912 | struct elf_segment_map **pointer_to_map; | |
4913 | Elf_Internal_Phdr *segment; | |
4914 | asection *section; | |
4915 | unsigned int i; | |
4916 | unsigned int num_segments; | |
4917 | bfd_boolean phdr_included = FALSE; | |
4918 | bfd_vma maxpagesize; | |
4919 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
4920 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 4921 | const struct elf_backend_data *bed; |
bc67d8a6 | 4922 | |
c044fabd | 4923 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 4924 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 4925 | return TRUE; |
252b5132 RH |
4926 | |
4927 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 4928 | return TRUE; |
252b5132 | 4929 | |
caf47ea6 | 4930 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
4931 | iehdr = elf_elfheader (ibfd); |
4932 | ||
bc67d8a6 | 4933 | map_first = NULL; |
c044fabd | 4934 | pointer_to_map = &map_first; |
252b5132 RH |
4935 | |
4936 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
4937 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
4938 | ||
4939 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
4940 | #define SEGMENT_END(segment, start) \ |
4941 | (start + (segment->p_memsz > segment->p_filesz \ | |
4942 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 4943 | |
eecdbe52 JJ |
4944 | #define SECTION_SIZE(section, segment) \ |
4945 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
4946 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 4947 | ? section->size : 0) |
eecdbe52 | 4948 | |
b34976b6 | 4949 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4950 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
4951 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
4952 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 4953 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4954 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 4955 | |
b34976b6 | 4956 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4957 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
4958 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
4959 | (section->lma >= base \ | |
eecdbe52 | 4960 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4961 | <= SEGMENT_END (segment, base))) |
252b5132 | 4962 | |
c044fabd | 4963 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
4964 | #define IS_COREFILE_NOTE(p, s) \ |
4965 | (p->p_type == PT_NOTE \ | |
4966 | && bfd_get_format (ibfd) == bfd_core \ | |
4967 | && s->vma == 0 && s->lma == 0 \ | |
4968 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 4969 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 4970 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
4971 | |
4972 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
4973 | linker, which generates a PT_INTERP section with p_vaddr and | |
4974 | p_memsz set to 0. */ | |
aecc8f8a AM |
4975 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
4976 | (p->p_vaddr == 0 \ | |
4977 | && p->p_paddr == 0 \ | |
4978 | && p->p_memsz == 0 \ | |
4979 | && p->p_filesz > 0 \ | |
4980 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 4981 | && s->size > 0 \ |
aecc8f8a | 4982 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 4983 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 4984 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 4985 | |
bc67d8a6 NC |
4986 | /* Decide if the given section should be included in the given segment. |
4987 | A section will be included if: | |
f5ffc919 NC |
4988 | 1. It is within the address space of the segment -- we use the LMA |
4989 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
4990 | 2. It is an allocated segment, |
4991 | 3. There is an output section associated with it, | |
eecdbe52 | 4992 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
4993 | 5. PT_GNU_STACK segments do not include any sections. |
4994 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
4995 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
4996 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
4997 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 4998 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
4999 | ((((segment->p_paddr \ |
5000 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5001 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5002 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5003 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5004 | && section->output_section != NULL \ |
03394ac9 | 5005 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5006 | && (segment->p_type != PT_TLS \ |
5007 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5008 | && (segment->p_type == PT_LOAD \ | |
5009 | || segment->p_type == PT_TLS \ | |
5010 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5011 | && (segment->p_type != PT_DYNAMIC \ |
5012 | || SECTION_SIZE (section, segment) > 0 \ | |
5013 | || (segment->p_paddr \ | |
5014 | ? segment->p_paddr != section->lma \ | |
5015 | : segment->p_vaddr != section->vma) \ | |
5016 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5017 | == 0)) \ | |
82e51918 | 5018 | && ! section->segment_mark) |
bc67d8a6 | 5019 | |
b34976b6 | 5020 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5021 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5022 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5023 | ||
5024 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5025 | their VMA address ranges and their LMA address ranges overlap. | |
5026 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5027 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5028 | to the same VMA range, but with the .data section mapped to a different | |
5029 | LMA. */ | |
aecc8f8a | 5030 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5031 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5032 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5033 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5034 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5035 | |
5036 | /* Initialise the segment mark field. */ | |
5037 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5038 | section->segment_mark = FALSE; |
bc67d8a6 | 5039 | |
252b5132 | 5040 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5041 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5042 | in the loadable segments. These can be created by weird |
aecc8f8a | 5043 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5044 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5045 | i < num_segments; | |
c044fabd | 5046 | i++, segment++) |
252b5132 | 5047 | { |
252b5132 | 5048 | unsigned int j; |
c044fabd | 5049 | Elf_Internal_Phdr *segment2; |
252b5132 | 5050 | |
aecc8f8a AM |
5051 | if (segment->p_type == PT_INTERP) |
5052 | for (section = ibfd->sections; section; section = section->next) | |
5053 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5054 | { | |
5055 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5056 | assignment code will work. */ |
aecc8f8a AM |
5057 | segment->p_vaddr = section->vma; |
5058 | break; | |
5059 | } | |
5060 | ||
bc67d8a6 NC |
5061 | if (segment->p_type != PT_LOAD) |
5062 | continue; | |
c044fabd | 5063 | |
bc67d8a6 | 5064 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5065 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5066 | { |
5067 | bfd_signed_vma extra_length; | |
c044fabd | 5068 | |
bc67d8a6 NC |
5069 | if (segment2->p_type != PT_LOAD |
5070 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5071 | continue; | |
c044fabd | 5072 | |
bc67d8a6 NC |
5073 | /* Merge the two segments together. */ |
5074 | if (segment2->p_vaddr < segment->p_vaddr) | |
5075 | { | |
c044fabd KH |
5076 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5077 | SEGMENT. */ | |
bc67d8a6 NC |
5078 | extra_length = |
5079 | SEGMENT_END (segment, segment->p_vaddr) | |
5080 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5081 | |
bc67d8a6 NC |
5082 | if (extra_length > 0) |
5083 | { | |
5084 | segment2->p_memsz += extra_length; | |
5085 | segment2->p_filesz += extra_length; | |
5086 | } | |
c044fabd | 5087 | |
bc67d8a6 | 5088 | segment->p_type = PT_NULL; |
c044fabd | 5089 | |
bc67d8a6 NC |
5090 | /* Since we have deleted P we must restart the outer loop. */ |
5091 | i = 0; | |
5092 | segment = elf_tdata (ibfd)->phdr; | |
5093 | break; | |
5094 | } | |
5095 | else | |
5096 | { | |
c044fabd KH |
5097 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5098 | SEGMENT2. */ | |
bc67d8a6 NC |
5099 | extra_length = |
5100 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5101 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5102 | |
bc67d8a6 NC |
5103 | if (extra_length > 0) |
5104 | { | |
5105 | segment->p_memsz += extra_length; | |
5106 | segment->p_filesz += extra_length; | |
5107 | } | |
c044fabd | 5108 | |
bc67d8a6 NC |
5109 | segment2->p_type = PT_NULL; |
5110 | } | |
5111 | } | |
5112 | } | |
c044fabd | 5113 | |
bc67d8a6 NC |
5114 | /* The second scan attempts to assign sections to segments. */ |
5115 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5116 | i < num_segments; | |
5117 | i ++, segment ++) | |
5118 | { | |
5119 | unsigned int section_count; | |
5120 | asection ** sections; | |
5121 | asection * output_section; | |
5122 | unsigned int isec; | |
5123 | bfd_vma matching_lma; | |
5124 | bfd_vma suggested_lma; | |
5125 | unsigned int j; | |
dc810e39 | 5126 | bfd_size_type amt; |
bc67d8a6 NC |
5127 | |
5128 | if (segment->p_type == PT_NULL) | |
5129 | continue; | |
c044fabd | 5130 | |
bc67d8a6 | 5131 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5132 | for (section = ibfd->sections, section_count = 0; |
5133 | section != NULL; | |
5134 | section = section->next) | |
caf47ea6 | 5135 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5136 | ++section_count; |
811072d8 | 5137 | |
b5f852ea NC |
5138 | /* Allocate a segment map big enough to contain |
5139 | all of the sections we have selected. */ | |
dc810e39 AM |
5140 | amt = sizeof (struct elf_segment_map); |
5141 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5142 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5143 | if (map == NULL) |
b34976b6 | 5144 | return FALSE; |
252b5132 RH |
5145 | |
5146 | /* Initialise the fields of the segment map. Default to | |
5147 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5148 | map->next = NULL; |
5149 | map->p_type = segment->p_type; | |
5150 | map->p_flags = segment->p_flags; | |
5151 | map->p_flags_valid = 1; | |
5152 | map->p_paddr = segment->p_paddr; | |
5153 | map->p_paddr_valid = 1; | |
252b5132 RH |
5154 | |
5155 | /* Determine if this segment contains the ELF file header | |
5156 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5157 | map->includes_filehdr = (segment->p_offset == 0 |
5158 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5159 | |
bc67d8a6 | 5160 | map->includes_phdrs = 0; |
252b5132 | 5161 | |
bc67d8a6 | 5162 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5163 | { |
bc67d8a6 NC |
5164 | map->includes_phdrs = |
5165 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5166 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5167 | >= ((bfd_vma) iehdr->e_phoff |
5168 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5169 | |
bc67d8a6 | 5170 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5171 | phdr_included = TRUE; |
252b5132 RH |
5172 | } |
5173 | ||
bc67d8a6 | 5174 | if (section_count == 0) |
252b5132 RH |
5175 | { |
5176 | /* Special segments, such as the PT_PHDR segment, may contain | |
5177 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5178 | something. They are allowed by the ELF spec however, so only |
5179 | a warning is produced. */ | |
bc67d8a6 | 5180 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5181 | (*_bfd_error_handler) |
d003868e AM |
5182 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5183 | ibfd); | |
252b5132 | 5184 | |
bc67d8a6 | 5185 | map->count = 0; |
c044fabd KH |
5186 | *pointer_to_map = map; |
5187 | pointer_to_map = &map->next; | |
252b5132 RH |
5188 | |
5189 | continue; | |
5190 | } | |
5191 | ||
5192 | /* Now scan the sections in the input BFD again and attempt | |
5193 | to add their corresponding output sections to the segment map. | |
5194 | The problem here is how to handle an output section which has | |
5195 | been moved (ie had its LMA changed). There are four possibilities: | |
5196 | ||
5197 | 1. None of the sections have been moved. | |
5198 | In this case we can continue to use the segment LMA from the | |
5199 | input BFD. | |
5200 | ||
5201 | 2. All of the sections have been moved by the same amount. | |
5202 | In this case we can change the segment's LMA to match the LMA | |
5203 | of the first section. | |
5204 | ||
5205 | 3. Some of the sections have been moved, others have not. | |
5206 | In this case those sections which have not been moved can be | |
5207 | placed in the current segment which will have to have its size, | |
5208 | and possibly its LMA changed, and a new segment or segments will | |
5209 | have to be created to contain the other sections. | |
5210 | ||
b5f852ea | 5211 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5212 | In this case we can change the segment's LMA to match the LMA |
5213 | of the first section and we will have to create a new segment | |
5214 | or segments to contain the other sections. | |
5215 | ||
5216 | In order to save time, we allocate an array to hold the section | |
5217 | pointers that we are interested in. As these sections get assigned | |
5218 | to a segment, they are removed from this array. */ | |
5219 | ||
0b14c2aa L |
5220 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5221 | to work around this long long bug. */ | |
5222 | amt = section_count * sizeof (asection *); | |
217aa764 | 5223 | sections = bfd_malloc (amt); |
252b5132 | 5224 | if (sections == NULL) |
b34976b6 | 5225 | return FALSE; |
252b5132 RH |
5226 | |
5227 | /* Step One: Scan for segment vs section LMA conflicts. | |
5228 | Also add the sections to the section array allocated above. | |
5229 | Also add the sections to the current segment. In the common | |
5230 | case, where the sections have not been moved, this means that | |
5231 | we have completely filled the segment, and there is nothing | |
5232 | more to do. */ | |
252b5132 | 5233 | isec = 0; |
72730e0c | 5234 | matching_lma = 0; |
252b5132 RH |
5235 | suggested_lma = 0; |
5236 | ||
bc67d8a6 NC |
5237 | for (j = 0, section = ibfd->sections; |
5238 | section != NULL; | |
5239 | section = section->next) | |
252b5132 | 5240 | { |
caf47ea6 | 5241 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5242 | { |
bc67d8a6 NC |
5243 | output_section = section->output_section; |
5244 | ||
5245 | sections[j ++] = section; | |
252b5132 RH |
5246 | |
5247 | /* The Solaris native linker always sets p_paddr to 0. | |
5248 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5249 | correct value. Note - some backends require that |
5250 | p_paddr be left as zero. */ | |
bc67d8a6 | 5251 | if (segment->p_paddr == 0 |
4455705d | 5252 | && segment->p_vaddr != 0 |
5e8d7549 | 5253 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5254 | && isec == 0 |
bc67d8a6 NC |
5255 | && output_section->lma != 0 |
5256 | && (output_section->vma == (segment->p_vaddr | |
5257 | + (map->includes_filehdr | |
5258 | ? iehdr->e_ehsize | |
5259 | : 0) | |
5260 | + (map->includes_phdrs | |
079e9a2f AM |
5261 | ? (iehdr->e_phnum |
5262 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5263 | : 0)))) |
5264 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5265 | |
5266 | /* Match up the physical address of the segment with the | |
5267 | LMA address of the output section. */ | |
bc67d8a6 | 5268 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5269 | || IS_COREFILE_NOTE (segment, section) |
5270 | || (bed->want_p_paddr_set_to_zero && | |
5271 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5272 | ) | |
252b5132 RH |
5273 | { |
5274 | if (matching_lma == 0) | |
bc67d8a6 | 5275 | matching_lma = output_section->lma; |
252b5132 RH |
5276 | |
5277 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5278 | then it does not overlap any other section within that |
252b5132 | 5279 | segment. */ |
bc67d8a6 | 5280 | map->sections[isec ++] = output_section; |
252b5132 RH |
5281 | } |
5282 | else if (suggested_lma == 0) | |
bc67d8a6 | 5283 | suggested_lma = output_section->lma; |
252b5132 RH |
5284 | } |
5285 | } | |
5286 | ||
bc67d8a6 | 5287 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5288 | |
5289 | /* Step Two: Adjust the physical address of the current segment, | |
5290 | if necessary. */ | |
bc67d8a6 | 5291 | if (isec == section_count) |
252b5132 RH |
5292 | { |
5293 | /* All of the sections fitted within the segment as currently | |
5294 | specified. This is the default case. Add the segment to | |
5295 | the list of built segments and carry on to process the next | |
5296 | program header in the input BFD. */ | |
bc67d8a6 | 5297 | map->count = section_count; |
c044fabd KH |
5298 | *pointer_to_map = map; |
5299 | pointer_to_map = &map->next; | |
252b5132 RH |
5300 | |
5301 | free (sections); | |
5302 | continue; | |
5303 | } | |
252b5132 RH |
5304 | else |
5305 | { | |
72730e0c AM |
5306 | if (matching_lma != 0) |
5307 | { | |
5308 | /* At least one section fits inside the current segment. | |
5309 | Keep it, but modify its physical address to match the | |
5310 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5311 | map->p_paddr = matching_lma; |
72730e0c AM |
5312 | } |
5313 | else | |
5314 | { | |
5315 | /* None of the sections fitted inside the current segment. | |
5316 | Change the current segment's physical address to match | |
5317 | the LMA of the first section. */ | |
bc67d8a6 | 5318 | map->p_paddr = suggested_lma; |
72730e0c AM |
5319 | } |
5320 | ||
bc67d8a6 NC |
5321 | /* Offset the segment physical address from the lma |
5322 | to allow for space taken up by elf headers. */ | |
5323 | if (map->includes_filehdr) | |
5324 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5325 | |
bc67d8a6 NC |
5326 | if (map->includes_phdrs) |
5327 | { | |
5328 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5329 | ||
5330 | /* iehdr->e_phnum is just an estimate of the number | |
5331 | of program headers that we will need. Make a note | |
5332 | here of the number we used and the segment we chose | |
5333 | to hold these headers, so that we can adjust the | |
5334 | offset when we know the correct value. */ | |
5335 | phdr_adjust_num = iehdr->e_phnum; | |
5336 | phdr_adjust_seg = map; | |
5337 | } | |
252b5132 RH |
5338 | } |
5339 | ||
5340 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5341 | those that fit to the current segment and removing them from the |
252b5132 RH |
5342 | sections array; but making sure not to leave large gaps. Once all |
5343 | possible sections have been assigned to the current segment it is | |
5344 | added to the list of built segments and if sections still remain | |
5345 | to be assigned, a new segment is constructed before repeating | |
5346 | the loop. */ | |
5347 | isec = 0; | |
5348 | do | |
5349 | { | |
bc67d8a6 | 5350 | map->count = 0; |
252b5132 RH |
5351 | suggested_lma = 0; |
5352 | ||
5353 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5354 | for (j = 0; j < section_count; j++) |
252b5132 | 5355 | { |
bc67d8a6 | 5356 | section = sections[j]; |
252b5132 | 5357 | |
bc67d8a6 | 5358 | if (section == NULL) |
252b5132 RH |
5359 | continue; |
5360 | ||
bc67d8a6 | 5361 | output_section = section->output_section; |
252b5132 | 5362 | |
bc67d8a6 | 5363 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5364 | |
bc67d8a6 NC |
5365 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5366 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5367 | { |
bc67d8a6 | 5368 | if (map->count == 0) |
252b5132 RH |
5369 | { |
5370 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5371 | the beginning of the segment, then something is |
5372 | wrong. */ | |
5373 | if (output_section->lma != | |
5374 | (map->p_paddr | |
5375 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5376 | + (map->includes_phdrs | |
5377 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5378 | : 0))) | |
252b5132 RH |
5379 | abort (); |
5380 | } | |
5381 | else | |
5382 | { | |
5383 | asection * prev_sec; | |
252b5132 | 5384 | |
bc67d8a6 | 5385 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5386 | |
5387 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5388 | and the start of this section is more than |
5389 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5390 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5391 | maxpagesize) |
caf47ea6 | 5392 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5393 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5394 | > output_section->lma)) |
252b5132 RH |
5395 | { |
5396 | if (suggested_lma == 0) | |
bc67d8a6 | 5397 | suggested_lma = output_section->lma; |
252b5132 RH |
5398 | |
5399 | continue; | |
5400 | } | |
5401 | } | |
5402 | ||
bc67d8a6 | 5403 | map->sections[map->count++] = output_section; |
252b5132 RH |
5404 | ++isec; |
5405 | sections[j] = NULL; | |
b34976b6 | 5406 | section->segment_mark = TRUE; |
252b5132 RH |
5407 | } |
5408 | else if (suggested_lma == 0) | |
bc67d8a6 | 5409 | suggested_lma = output_section->lma; |
252b5132 RH |
5410 | } |
5411 | ||
bc67d8a6 | 5412 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5413 | |
5414 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5415 | *pointer_to_map = map; |
5416 | pointer_to_map = &map->next; | |
252b5132 | 5417 | |
bc67d8a6 | 5418 | if (isec < section_count) |
252b5132 RH |
5419 | { |
5420 | /* We still have not allocated all of the sections to | |
5421 | segments. Create a new segment here, initialise it | |
5422 | and carry on looping. */ | |
dc810e39 AM |
5423 | amt = sizeof (struct elf_segment_map); |
5424 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5425 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5426 | if (map == NULL) |
5ed6aba4 NC |
5427 | { |
5428 | free (sections); | |
5429 | return FALSE; | |
5430 | } | |
252b5132 RH |
5431 | |
5432 | /* Initialise the fields of the segment map. Set the physical | |
5433 | physical address to the LMA of the first section that has | |
5434 | not yet been assigned. */ | |
bc67d8a6 NC |
5435 | map->next = NULL; |
5436 | map->p_type = segment->p_type; | |
5437 | map->p_flags = segment->p_flags; | |
5438 | map->p_flags_valid = 1; | |
5439 | map->p_paddr = suggested_lma; | |
5440 | map->p_paddr_valid = 1; | |
5441 | map->includes_filehdr = 0; | |
5442 | map->includes_phdrs = 0; | |
252b5132 RH |
5443 | } |
5444 | } | |
bc67d8a6 | 5445 | while (isec < section_count); |
252b5132 RH |
5446 | |
5447 | free (sections); | |
5448 | } | |
5449 | ||
5450 | /* The Solaris linker creates program headers in which all the | |
5451 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5452 | file, we get confused. Check for this case, and if we find it | |
5453 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5454 | for (map = map_first; map != NULL; map = map->next) |
5455 | if (map->p_paddr != 0) | |
252b5132 | 5456 | break; |
bc67d8a6 | 5457 | if (map == NULL) |
b5f852ea NC |
5458 | for (map = map_first; map != NULL; map = map->next) |
5459 | map->p_paddr_valid = 0; | |
252b5132 | 5460 | |
bc67d8a6 NC |
5461 | elf_tdata (obfd)->segment_map = map_first; |
5462 | ||
5463 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5464 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5465 | the offset if necessary. */ |
5466 | if (phdr_adjust_seg != NULL) | |
5467 | { | |
5468 | unsigned int count; | |
c044fabd | 5469 | |
bc67d8a6 | 5470 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5471 | count++; |
252b5132 | 5472 | |
bc67d8a6 NC |
5473 | if (count > phdr_adjust_num) |
5474 | phdr_adjust_seg->p_paddr | |
5475 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5476 | } | |
c044fabd | 5477 | |
bc67d8a6 | 5478 | #undef SEGMENT_END |
eecdbe52 | 5479 | #undef SECTION_SIZE |
bc67d8a6 NC |
5480 | #undef IS_CONTAINED_BY_VMA |
5481 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5482 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5483 | #undef IS_SOLARIS_PT_INTERP |
5484 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5485 | #undef SEGMENT_AFTER_SEGMENT | |
5486 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5487 | return TRUE; |
252b5132 RH |
5488 | } |
5489 | ||
5490 | /* Copy private section information. This copies over the entsize | |
5491 | field, and sometimes the info field. */ | |
5492 | ||
b34976b6 | 5493 | bfd_boolean |
217aa764 AM |
5494 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5495 | asection *isec, | |
5496 | bfd *obfd, | |
5497 | asection *osec) | |
252b5132 RH |
5498 | { |
5499 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5500 | ||
5501 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5502 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5503 | return TRUE; |
252b5132 | 5504 | |
252b5132 RH |
5505 | ihdr = &elf_section_data (isec)->this_hdr; |
5506 | ohdr = &elf_section_data (osec)->this_hdr; | |
5507 | ||
5508 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5509 | ||
5510 | if (ihdr->sh_type == SHT_SYMTAB | |
5511 | || ihdr->sh_type == SHT_DYNSYM | |
5512 | || ihdr->sh_type == SHT_GNU_verneed | |
5513 | || ihdr->sh_type == SHT_GNU_verdef) | |
5514 | ohdr->sh_info = ihdr->sh_info; | |
5515 | ||
9dce4196 AM |
5516 | /* Set things up for objcopy. The output SHT_GROUP section will |
5517 | have its elf_next_in_group pointing back to the input group | |
5518 | members. */ | |
5519 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5520 | elf_group_name (osec) = elf_group_name (isec); | |
5521 | ||
68bfbfcc | 5522 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5523 | |
b34976b6 | 5524 | return TRUE; |
252b5132 RH |
5525 | } |
5526 | ||
80fccad2 BW |
5527 | /* Copy private header information. */ |
5528 | ||
5529 | bfd_boolean | |
5530 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5531 | { | |
5532 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5533 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5534 | return TRUE; | |
5535 | ||
5536 | /* Copy over private BFD data if it has not already been copied. | |
5537 | This must be done here, rather than in the copy_private_bfd_data | |
5538 | entry point, because the latter is called after the section | |
5539 | contents have been set, which means that the program headers have | |
5540 | already been worked out. */ | |
5541 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5542 | { | |
5543 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5544 | return FALSE; | |
5545 | } | |
5546 | ||
5547 | return TRUE; | |
5548 | } | |
5549 | ||
252b5132 RH |
5550 | /* Copy private symbol information. If this symbol is in a section |
5551 | which we did not map into a BFD section, try to map the section | |
5552 | index correctly. We use special macro definitions for the mapped | |
5553 | section indices; these definitions are interpreted by the | |
5554 | swap_out_syms function. */ | |
5555 | ||
9ad5cbcf AM |
5556 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5557 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5558 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5559 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5560 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5561 | |
b34976b6 | 5562 | bfd_boolean |
217aa764 AM |
5563 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5564 | asymbol *isymarg, | |
5565 | bfd *obfd, | |
5566 | asymbol *osymarg) | |
252b5132 RH |
5567 | { |
5568 | elf_symbol_type *isym, *osym; | |
5569 | ||
5570 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5571 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5572 | return TRUE; |
252b5132 RH |
5573 | |
5574 | isym = elf_symbol_from (ibfd, isymarg); | |
5575 | osym = elf_symbol_from (obfd, osymarg); | |
5576 | ||
5577 | if (isym != NULL | |
5578 | && osym != NULL | |
5579 | && bfd_is_abs_section (isym->symbol.section)) | |
5580 | { | |
5581 | unsigned int shndx; | |
5582 | ||
5583 | shndx = isym->internal_elf_sym.st_shndx; | |
5584 | if (shndx == elf_onesymtab (ibfd)) | |
5585 | shndx = MAP_ONESYMTAB; | |
5586 | else if (shndx == elf_dynsymtab (ibfd)) | |
5587 | shndx = MAP_DYNSYMTAB; | |
5588 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5589 | shndx = MAP_STRTAB; | |
5590 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5591 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5592 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5593 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5594 | osym->internal_elf_sym.st_shndx = shndx; |
5595 | } | |
5596 | ||
b34976b6 | 5597 | return TRUE; |
252b5132 RH |
5598 | } |
5599 | ||
5600 | /* Swap out the symbols. */ | |
5601 | ||
b34976b6 | 5602 | static bfd_boolean |
217aa764 AM |
5603 | swap_out_syms (bfd *abfd, |
5604 | struct bfd_strtab_hash **sttp, | |
5605 | int relocatable_p) | |
252b5132 | 5606 | { |
9c5bfbb7 | 5607 | const struct elf_backend_data *bed; |
079e9a2f AM |
5608 | int symcount; |
5609 | asymbol **syms; | |
5610 | struct bfd_strtab_hash *stt; | |
5611 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5612 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5613 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5614 | bfd_byte *outbound_syms; |
5615 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5616 | int idx; |
5617 | bfd_size_type amt; | |
174fd7f9 | 5618 | bfd_boolean name_local_sections; |
252b5132 RH |
5619 | |
5620 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5621 | return FALSE; |
252b5132 | 5622 | |
c044fabd | 5623 | /* Dump out the symtabs. */ |
079e9a2f AM |
5624 | stt = _bfd_elf_stringtab_init (); |
5625 | if (stt == NULL) | |
b34976b6 | 5626 | return FALSE; |
252b5132 | 5627 | |
079e9a2f AM |
5628 | bed = get_elf_backend_data (abfd); |
5629 | symcount = bfd_get_symcount (abfd); | |
5630 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5631 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5632 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5633 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5634 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5635 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5636 | |
5637 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5638 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5639 | ||
5640 | amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; | |
5641 | outbound_syms = bfd_alloc (abfd, amt); | |
5642 | if (outbound_syms == NULL) | |
5ed6aba4 NC |
5643 | { |
5644 | _bfd_stringtab_free (stt); | |
5645 | return FALSE; | |
5646 | } | |
217aa764 | 5647 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5648 | |
9ad5cbcf AM |
5649 | outbound_shndx = NULL; |
5650 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5651 | if (symtab_shndx_hdr->sh_name != 0) | |
5652 | { | |
5653 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
1126897b | 5654 | outbound_shndx = bfd_zalloc (abfd, amt); |
9ad5cbcf | 5655 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5656 | { |
5657 | _bfd_stringtab_free (stt); | |
5658 | return FALSE; | |
5659 | } | |
5660 | ||
9ad5cbcf AM |
5661 | symtab_shndx_hdr->contents = outbound_shndx; |
5662 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5663 | symtab_shndx_hdr->sh_size = amt; | |
5664 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5665 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5666 | } | |
5667 | ||
589e6347 | 5668 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5669 | { |
5670 | /* Fill in zeroth symbol and swap it out. */ | |
5671 | Elf_Internal_Sym sym; | |
5672 | sym.st_name = 0; | |
5673 | sym.st_value = 0; | |
5674 | sym.st_size = 0; | |
5675 | sym.st_info = 0; | |
5676 | sym.st_other = 0; | |
5677 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5678 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5679 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5680 | if (outbound_shndx != NULL) |
5681 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5682 | } |
252b5132 | 5683 | |
174fd7f9 RS |
5684 | name_local_sections |
5685 | = (bed->elf_backend_name_local_section_symbols | |
5686 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5687 | ||
079e9a2f AM |
5688 | syms = bfd_get_outsymbols (abfd); |
5689 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5690 | { |
252b5132 | 5691 | Elf_Internal_Sym sym; |
079e9a2f AM |
5692 | bfd_vma value = syms[idx]->value; |
5693 | elf_symbol_type *type_ptr; | |
5694 | flagword flags = syms[idx]->flags; | |
5695 | int type; | |
252b5132 | 5696 | |
174fd7f9 RS |
5697 | if (!name_local_sections |
5698 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5699 | { |
5700 | /* Local section symbols have no name. */ | |
5701 | sym.st_name = 0; | |
5702 | } | |
5703 | else | |
5704 | { | |
5705 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5706 | syms[idx]->name, | |
b34976b6 | 5707 | TRUE, FALSE); |
079e9a2f | 5708 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5709 | { |
5710 | _bfd_stringtab_free (stt); | |
5711 | return FALSE; | |
5712 | } | |
079e9a2f | 5713 | } |
252b5132 | 5714 | |
079e9a2f | 5715 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5716 | |
079e9a2f AM |
5717 | if ((flags & BSF_SECTION_SYM) == 0 |
5718 | && bfd_is_com_section (syms[idx]->section)) | |
5719 | { | |
5720 | /* ELF common symbols put the alignment into the `value' field, | |
5721 | and the size into the `size' field. This is backwards from | |
5722 | how BFD handles it, so reverse it here. */ | |
5723 | sym.st_size = value; | |
5724 | if (type_ptr == NULL | |
5725 | || type_ptr->internal_elf_sym.st_value == 0) | |
5726 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5727 | else | |
5728 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5729 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5730 | (abfd, syms[idx]->section); | |
5731 | } | |
5732 | else | |
5733 | { | |
5734 | asection *sec = syms[idx]->section; | |
5735 | int shndx; | |
252b5132 | 5736 | |
079e9a2f AM |
5737 | if (sec->output_section) |
5738 | { | |
5739 | value += sec->output_offset; | |
5740 | sec = sec->output_section; | |
5741 | } | |
589e6347 | 5742 | |
079e9a2f AM |
5743 | /* Don't add in the section vma for relocatable output. */ |
5744 | if (! relocatable_p) | |
5745 | value += sec->vma; | |
5746 | sym.st_value = value; | |
5747 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5748 | ||
5749 | if (bfd_is_abs_section (sec) | |
5750 | && type_ptr != NULL | |
5751 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5752 | { | |
5753 | /* This symbol is in a real ELF section which we did | |
5754 | not create as a BFD section. Undo the mapping done | |
5755 | by copy_private_symbol_data. */ | |
5756 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5757 | switch (shndx) | |
5758 | { | |
5759 | case MAP_ONESYMTAB: | |
5760 | shndx = elf_onesymtab (abfd); | |
5761 | break; | |
5762 | case MAP_DYNSYMTAB: | |
5763 | shndx = elf_dynsymtab (abfd); | |
5764 | break; | |
5765 | case MAP_STRTAB: | |
5766 | shndx = elf_tdata (abfd)->strtab_section; | |
5767 | break; | |
5768 | case MAP_SHSTRTAB: | |
5769 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5770 | break; | |
9ad5cbcf AM |
5771 | case MAP_SYM_SHNDX: |
5772 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5773 | break; | |
079e9a2f AM |
5774 | default: |
5775 | break; | |
5776 | } | |
5777 | } | |
5778 | else | |
5779 | { | |
5780 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5781 | |
079e9a2f AM |
5782 | if (shndx == -1) |
5783 | { | |
5784 | asection *sec2; | |
5785 | ||
5786 | /* Writing this would be a hell of a lot easier if | |
5787 | we had some decent documentation on bfd, and | |
5788 | knew what to expect of the library, and what to | |
5789 | demand of applications. For example, it | |
5790 | appears that `objcopy' might not set the | |
5791 | section of a symbol to be a section that is | |
5792 | actually in the output file. */ | |
5793 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5794 | if (sec2 == NULL) |
5795 | { | |
5796 | _bfd_error_handler (_("\ | |
5797 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5798 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5799 | sec->name); | |
811072d8 | 5800 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5801 | _bfd_stringtab_free (stt); |
589e6347 NC |
5802 | return FALSE; |
5803 | } | |
811072d8 | 5804 | |
079e9a2f AM |
5805 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5806 | BFD_ASSERT (shndx != -1); | |
5807 | } | |
5808 | } | |
252b5132 | 5809 | |
079e9a2f AM |
5810 | sym.st_shndx = shndx; |
5811 | } | |
252b5132 | 5812 | |
13ae64f3 JJ |
5813 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5814 | type = STT_TLS; | |
5815 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5816 | type = STT_FUNC; |
5817 | else if ((flags & BSF_OBJECT) != 0) | |
5818 | type = STT_OBJECT; | |
5819 | else | |
5820 | type = STT_NOTYPE; | |
252b5132 | 5821 | |
13ae64f3 JJ |
5822 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5823 | type = STT_TLS; | |
5824 | ||
589e6347 | 5825 | /* Processor-specific types. */ |
079e9a2f AM |
5826 | if (type_ptr != NULL |
5827 | && bed->elf_backend_get_symbol_type) | |
5828 | type = ((*bed->elf_backend_get_symbol_type) | |
5829 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5830 | |
079e9a2f AM |
5831 | if (flags & BSF_SECTION_SYM) |
5832 | { | |
5833 | if (flags & BSF_GLOBAL) | |
5834 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5835 | else | |
5836 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
5837 | } | |
5838 | else if (bfd_is_com_section (syms[idx]->section)) | |
5839 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
5840 | else if (bfd_is_und_section (syms[idx]->section)) | |
5841 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
5842 | ? STB_WEAK | |
5843 | : STB_GLOBAL), | |
5844 | type); | |
5845 | else if (flags & BSF_FILE) | |
5846 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
5847 | else | |
5848 | { | |
5849 | int bind = STB_LOCAL; | |
252b5132 | 5850 | |
079e9a2f AM |
5851 | if (flags & BSF_LOCAL) |
5852 | bind = STB_LOCAL; | |
5853 | else if (flags & BSF_WEAK) | |
5854 | bind = STB_WEAK; | |
5855 | else if (flags & BSF_GLOBAL) | |
5856 | bind = STB_GLOBAL; | |
252b5132 | 5857 | |
079e9a2f AM |
5858 | sym.st_info = ELF_ST_INFO (bind, type); |
5859 | } | |
252b5132 | 5860 | |
079e9a2f AM |
5861 | if (type_ptr != NULL) |
5862 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
5863 | else | |
5864 | sym.st_other = 0; | |
252b5132 | 5865 | |
9ad5cbcf | 5866 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5867 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5868 | if (outbound_shndx != NULL) |
5869 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5870 | } |
252b5132 | 5871 | |
079e9a2f AM |
5872 | *sttp = stt; |
5873 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
5874 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 5875 | |
079e9a2f AM |
5876 | symstrtab_hdr->sh_flags = 0; |
5877 | symstrtab_hdr->sh_addr = 0; | |
5878 | symstrtab_hdr->sh_entsize = 0; | |
5879 | symstrtab_hdr->sh_link = 0; | |
5880 | symstrtab_hdr->sh_info = 0; | |
5881 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 5882 | |
b34976b6 | 5883 | return TRUE; |
252b5132 RH |
5884 | } |
5885 | ||
5886 | /* Return the number of bytes required to hold the symtab vector. | |
5887 | ||
5888 | Note that we base it on the count plus 1, since we will null terminate | |
5889 | the vector allocated based on this size. However, the ELF symbol table | |
5890 | always has a dummy entry as symbol #0, so it ends up even. */ | |
5891 | ||
5892 | long | |
217aa764 | 5893 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
5894 | { |
5895 | long symcount; | |
5896 | long symtab_size; | |
5897 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
5898 | ||
5899 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
5900 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
5901 | if (symcount > 0) | |
5902 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
5903 | |
5904 | return symtab_size; | |
5905 | } | |
5906 | ||
5907 | long | |
217aa764 | 5908 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
5909 | { |
5910 | long symcount; | |
5911 | long symtab_size; | |
5912 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
5913 | ||
5914 | if (elf_dynsymtab (abfd) == 0) | |
5915 | { | |
5916 | bfd_set_error (bfd_error_invalid_operation); | |
5917 | return -1; | |
5918 | } | |
5919 | ||
5920 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
5921 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
5922 | if (symcount > 0) | |
5923 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
5924 | |
5925 | return symtab_size; | |
5926 | } | |
5927 | ||
5928 | long | |
217aa764 AM |
5929 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
5930 | sec_ptr asect) | |
252b5132 RH |
5931 | { |
5932 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
5933 | } | |
5934 | ||
5935 | /* Canonicalize the relocs. */ | |
5936 | ||
5937 | long | |
217aa764 AM |
5938 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
5939 | sec_ptr section, | |
5940 | arelent **relptr, | |
5941 | asymbol **symbols) | |
252b5132 RH |
5942 | { |
5943 | arelent *tblptr; | |
5944 | unsigned int i; | |
9c5bfbb7 | 5945 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 5946 | |
b34976b6 | 5947 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
5948 | return -1; |
5949 | ||
5950 | tblptr = section->relocation; | |
5951 | for (i = 0; i < section->reloc_count; i++) | |
5952 | *relptr++ = tblptr++; | |
5953 | ||
5954 | *relptr = NULL; | |
5955 | ||
5956 | return section->reloc_count; | |
5957 | } | |
5958 | ||
5959 | long | |
6cee3f79 | 5960 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 5961 | { |
9c5bfbb7 | 5962 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 5963 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
5964 | |
5965 | if (symcount >= 0) | |
5966 | bfd_get_symcount (abfd) = symcount; | |
5967 | return symcount; | |
5968 | } | |
5969 | ||
5970 | long | |
217aa764 AM |
5971 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
5972 | asymbol **allocation) | |
252b5132 | 5973 | { |
9c5bfbb7 | 5974 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 5975 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
5976 | |
5977 | if (symcount >= 0) | |
5978 | bfd_get_dynamic_symcount (abfd) = symcount; | |
5979 | return symcount; | |
252b5132 RH |
5980 | } |
5981 | ||
8615f3f2 AM |
5982 | /* Return the size required for the dynamic reloc entries. Any loadable |
5983 | section that was actually installed in the BFD, and has type SHT_REL | |
5984 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
5985 | dynamic reloc section. */ | |
252b5132 RH |
5986 | |
5987 | long | |
217aa764 | 5988 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
5989 | { |
5990 | long ret; | |
5991 | asection *s; | |
5992 | ||
5993 | if (elf_dynsymtab (abfd) == 0) | |
5994 | { | |
5995 | bfd_set_error (bfd_error_invalid_operation); | |
5996 | return -1; | |
5997 | } | |
5998 | ||
5999 | ret = sizeof (arelent *); | |
6000 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6001 | if ((s->flags & SEC_LOAD) != 0 |
6002 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6003 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6004 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6005 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6006 | * sizeof (arelent *)); |
6007 | ||
6008 | return ret; | |
6009 | } | |
6010 | ||
8615f3f2 AM |
6011 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6012 | dynamic relocations as a single block, although they are actually | |
6013 | associated with particular sections; the interface, which was | |
6014 | designed for SunOS style shared libraries, expects that there is only | |
6015 | one set of dynamic relocs. Any loadable section that was actually | |
6016 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6017 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6018 | |
6019 | long | |
217aa764 AM |
6020 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6021 | arelent **storage, | |
6022 | asymbol **syms) | |
252b5132 | 6023 | { |
217aa764 | 6024 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6025 | asection *s; |
6026 | long ret; | |
6027 | ||
6028 | if (elf_dynsymtab (abfd) == 0) | |
6029 | { | |
6030 | bfd_set_error (bfd_error_invalid_operation); | |
6031 | return -1; | |
6032 | } | |
6033 | ||
6034 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6035 | ret = 0; | |
6036 | for (s = abfd->sections; s != NULL; s = s->next) | |
6037 | { | |
8615f3f2 AM |
6038 | if ((s->flags & SEC_LOAD) != 0 |
6039 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6040 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6041 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6042 | { | |
6043 | arelent *p; | |
6044 | long count, i; | |
6045 | ||
b34976b6 | 6046 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6047 | return -1; |
eea6121a | 6048 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6049 | p = s->relocation; |
6050 | for (i = 0; i < count; i++) | |
6051 | *storage++ = p++; | |
6052 | ret += count; | |
6053 | } | |
6054 | } | |
6055 | ||
6056 | *storage = NULL; | |
6057 | ||
6058 | return ret; | |
6059 | } | |
6060 | \f | |
6061 | /* Read in the version information. */ | |
6062 | ||
b34976b6 | 6063 | bfd_boolean |
fc0e6df6 | 6064 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6065 | { |
6066 | bfd_byte *contents = NULL; | |
dc810e39 | 6067 | bfd_size_type amt; |
fc0e6df6 PB |
6068 | unsigned int freeidx = 0; |
6069 | ||
6070 | if (elf_dynverref (abfd) != 0) | |
6071 | { | |
6072 | Elf_Internal_Shdr *hdr; | |
6073 | Elf_External_Verneed *everneed; | |
6074 | Elf_Internal_Verneed *iverneed; | |
6075 | unsigned int i; | |
6076 | ||
6077 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6078 | ||
6079 | amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); | |
6080 | elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); | |
6081 | if (elf_tdata (abfd)->verref == NULL) | |
6082 | goto error_return; | |
6083 | ||
6084 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6085 | ||
6086 | contents = bfd_malloc (hdr->sh_size); | |
6087 | if (contents == NULL) | |
6088 | goto error_return; | |
6089 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
6090 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
6091 | goto error_return; | |
6092 | ||
6093 | everneed = (Elf_External_Verneed *) contents; | |
6094 | iverneed = elf_tdata (abfd)->verref; | |
6095 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6096 | { | |
6097 | Elf_External_Vernaux *evernaux; | |
6098 | Elf_Internal_Vernaux *ivernaux; | |
6099 | unsigned int j; | |
6100 | ||
6101 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6102 | ||
6103 | iverneed->vn_bfd = abfd; | |
6104 | ||
6105 | iverneed->vn_filename = | |
6106 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6107 | iverneed->vn_file); | |
6108 | if (iverneed->vn_filename == NULL) | |
6109 | goto error_return; | |
6110 | ||
6111 | amt = iverneed->vn_cnt; | |
6112 | amt *= sizeof (Elf_Internal_Vernaux); | |
6113 | iverneed->vn_auxptr = bfd_alloc (abfd, amt); | |
6114 | ||
6115 | evernaux = ((Elf_External_Vernaux *) | |
6116 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6117 | ivernaux = iverneed->vn_auxptr; | |
6118 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6119 | { | |
6120 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6121 | ||
6122 | ivernaux->vna_nodename = | |
6123 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6124 | ivernaux->vna_name); | |
6125 | if (ivernaux->vna_nodename == NULL) | |
6126 | goto error_return; | |
6127 | ||
6128 | if (j + 1 < iverneed->vn_cnt) | |
6129 | ivernaux->vna_nextptr = ivernaux + 1; | |
6130 | else | |
6131 | ivernaux->vna_nextptr = NULL; | |
6132 | ||
6133 | evernaux = ((Elf_External_Vernaux *) | |
6134 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6135 | ||
6136 | if (ivernaux->vna_other > freeidx) | |
6137 | freeidx = ivernaux->vna_other; | |
6138 | } | |
6139 | ||
6140 | if (i + 1 < hdr->sh_info) | |
6141 | iverneed->vn_nextref = iverneed + 1; | |
6142 | else | |
6143 | iverneed->vn_nextref = NULL; | |
6144 | ||
6145 | everneed = ((Elf_External_Verneed *) | |
6146 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6147 | } | |
6148 | ||
6149 | free (contents); | |
6150 | contents = NULL; | |
6151 | } | |
252b5132 RH |
6152 | |
6153 | if (elf_dynverdef (abfd) != 0) | |
6154 | { | |
6155 | Elf_Internal_Shdr *hdr; | |
6156 | Elf_External_Verdef *everdef; | |
6157 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6158 | Elf_Internal_Verdef *iverdefarr; |
6159 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6160 | unsigned int i; |
062e2358 | 6161 | unsigned int maxidx; |
252b5132 RH |
6162 | |
6163 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6164 | ||
217aa764 | 6165 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6166 | if (contents == NULL) |
6167 | goto error_return; | |
6168 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6169 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6170 | goto error_return; |
6171 | ||
f631889e UD |
6172 | /* We know the number of entries in the section but not the maximum |
6173 | index. Therefore we have to run through all entries and find | |
6174 | the maximum. */ | |
252b5132 | 6175 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6176 | maxidx = 0; |
6177 | for (i = 0; i < hdr->sh_info; ++i) | |
6178 | { | |
6179 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6180 | ||
062e2358 AM |
6181 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6182 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e UD |
6183 | |
6184 | everdef = ((Elf_External_Verdef *) | |
6185 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6186 | } | |
6187 | ||
fc0e6df6 PB |
6188 | if (default_imported_symver) |
6189 | { | |
6190 | if (freeidx > maxidx) | |
6191 | maxidx = ++freeidx; | |
6192 | else | |
6193 | freeidx = ++maxidx; | |
6194 | } | |
dc810e39 | 6195 | amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); |
217aa764 | 6196 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); |
f631889e UD |
6197 | if (elf_tdata (abfd)->verdef == NULL) |
6198 | goto error_return; | |
6199 | ||
6200 | elf_tdata (abfd)->cverdefs = maxidx; | |
6201 | ||
6202 | everdef = (Elf_External_Verdef *) contents; | |
6203 | iverdefarr = elf_tdata (abfd)->verdef; | |
6204 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6205 | { |
6206 | Elf_External_Verdaux *everdaux; | |
6207 | Elf_Internal_Verdaux *iverdaux; | |
6208 | unsigned int j; | |
6209 | ||
f631889e UD |
6210 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6211 | ||
6212 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; | |
6213 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6214 | |
6215 | iverdef->vd_bfd = abfd; | |
6216 | ||
dc810e39 | 6217 | amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); |
217aa764 | 6218 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
6219 | if (iverdef->vd_auxptr == NULL) |
6220 | goto error_return; | |
6221 | ||
6222 | everdaux = ((Elf_External_Verdaux *) | |
6223 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6224 | iverdaux = iverdef->vd_auxptr; | |
6225 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6226 | { | |
6227 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6228 | ||
6229 | iverdaux->vda_nodename = | |
6230 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6231 | iverdaux->vda_name); | |
6232 | if (iverdaux->vda_nodename == NULL) | |
6233 | goto error_return; | |
6234 | ||
6235 | if (j + 1 < iverdef->vd_cnt) | |
6236 | iverdaux->vda_nextptr = iverdaux + 1; | |
6237 | else | |
6238 | iverdaux->vda_nextptr = NULL; | |
6239 | ||
6240 | everdaux = ((Elf_External_Verdaux *) | |
6241 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6242 | } | |
6243 | ||
6244 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
6245 | ||
6246 | if (i + 1 < hdr->sh_info) | |
6247 | iverdef->vd_nextdef = iverdef + 1; | |
6248 | else | |
6249 | iverdef->vd_nextdef = NULL; | |
6250 | ||
6251 | everdef = ((Elf_External_Verdef *) | |
6252 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6253 | } | |
6254 | ||
6255 | free (contents); | |
6256 | contents = NULL; | |
6257 | } | |
fc0e6df6 | 6258 | else if (default_imported_symver) |
252b5132 | 6259 | { |
fc0e6df6 PB |
6260 | if (freeidx < 3) |
6261 | freeidx = 3; | |
6262 | else | |
6263 | freeidx++; | |
252b5132 | 6264 | |
fc0e6df6 PB |
6265 | amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef); |
6266 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); | |
6267 | if (elf_tdata (abfd)->verdef == NULL) | |
252b5132 RH |
6268 | goto error_return; |
6269 | ||
fc0e6df6 PB |
6270 | elf_tdata (abfd)->cverdefs = freeidx; |
6271 | } | |
252b5132 | 6272 | |
fc0e6df6 PB |
6273 | /* Create a default version based on the soname. */ |
6274 | if (default_imported_symver) | |
6275 | { | |
6276 | Elf_Internal_Verdef *iverdef; | |
6277 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6278 | |
fc0e6df6 | 6279 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6280 | |
fc0e6df6 PB |
6281 | iverdef->vd_version = VER_DEF_CURRENT; |
6282 | iverdef->vd_flags = 0; | |
6283 | iverdef->vd_ndx = freeidx; | |
6284 | iverdef->vd_cnt = 1; | |
252b5132 | 6285 | |
fc0e6df6 | 6286 | iverdef->vd_bfd = abfd; |
252b5132 | 6287 | |
fc0e6df6 PB |
6288 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6289 | if (iverdef->vd_nodename == NULL) | |
6290 | goto error_return; | |
6291 | iverdef->vd_nextdef = NULL; | |
6292 | amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux); | |
6293 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); | |
252b5132 | 6294 | |
fc0e6df6 PB |
6295 | iverdaux = iverdef->vd_auxptr; |
6296 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6297 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6298 | } |
6299 | ||
b34976b6 | 6300 | return TRUE; |
252b5132 RH |
6301 | |
6302 | error_return: | |
5ed6aba4 | 6303 | if (contents != NULL) |
252b5132 | 6304 | free (contents); |
b34976b6 | 6305 | return FALSE; |
252b5132 RH |
6306 | } |
6307 | \f | |
6308 | asymbol * | |
217aa764 | 6309 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6310 | { |
6311 | elf_symbol_type *newsym; | |
dc810e39 | 6312 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6313 | |
217aa764 | 6314 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6315 | if (!newsym) |
6316 | return NULL; | |
6317 | else | |
6318 | { | |
6319 | newsym->symbol.the_bfd = abfd; | |
6320 | return &newsym->symbol; | |
6321 | } | |
6322 | } | |
6323 | ||
6324 | void | |
217aa764 AM |
6325 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6326 | asymbol *symbol, | |
6327 | symbol_info *ret) | |
252b5132 RH |
6328 | { |
6329 | bfd_symbol_info (symbol, ret); | |
6330 | } | |
6331 | ||
6332 | /* Return whether a symbol name implies a local symbol. Most targets | |
6333 | use this function for the is_local_label_name entry point, but some | |
6334 | override it. */ | |
6335 | ||
b34976b6 | 6336 | bfd_boolean |
217aa764 AM |
6337 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6338 | const char *name) | |
252b5132 RH |
6339 | { |
6340 | /* Normal local symbols start with ``.L''. */ | |
6341 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6342 | return TRUE; |
252b5132 RH |
6343 | |
6344 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6345 | DWARF debugging symbols starting with ``..''. */ | |
6346 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6347 | return TRUE; |
252b5132 RH |
6348 | |
6349 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6350 | emitting DWARF debugging output. I suspect this is actually a | |
6351 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6352 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6353 | underscore to be emitted on some ELF targets). For ease of use, | |
6354 | we treat such symbols as local. */ | |
6355 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6356 | return TRUE; |
252b5132 | 6357 | |
b34976b6 | 6358 | return FALSE; |
252b5132 RH |
6359 | } |
6360 | ||
6361 | alent * | |
217aa764 AM |
6362 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6363 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6364 | { |
6365 | abort (); | |
6366 | return NULL; | |
6367 | } | |
6368 | ||
b34976b6 | 6369 | bfd_boolean |
217aa764 AM |
6370 | _bfd_elf_set_arch_mach (bfd *abfd, |
6371 | enum bfd_architecture arch, | |
6372 | unsigned long machine) | |
252b5132 RH |
6373 | { |
6374 | /* If this isn't the right architecture for this backend, and this | |
6375 | isn't the generic backend, fail. */ | |
6376 | if (arch != get_elf_backend_data (abfd)->arch | |
6377 | && arch != bfd_arch_unknown | |
6378 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6379 | return FALSE; |
252b5132 RH |
6380 | |
6381 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6382 | } | |
6383 | ||
d1fad7c6 NC |
6384 | /* Find the function to a particular section and offset, |
6385 | for error reporting. */ | |
252b5132 | 6386 | |
b34976b6 | 6387 | static bfd_boolean |
217aa764 AM |
6388 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6389 | asection *section, | |
6390 | asymbol **symbols, | |
6391 | bfd_vma offset, | |
6392 | const char **filename_ptr, | |
6393 | const char **functionname_ptr) | |
252b5132 | 6394 | { |
252b5132 | 6395 | const char *filename; |
57426232 | 6396 | asymbol *func, *file; |
252b5132 RH |
6397 | bfd_vma low_func; |
6398 | asymbol **p; | |
57426232 JB |
6399 | /* ??? Given multiple file symbols, it is impossible to reliably |
6400 | choose the right file name for global symbols. File symbols are | |
6401 | local symbols, and thus all file symbols must sort before any | |
6402 | global symbols. The ELF spec may be interpreted to say that a | |
6403 | file symbol must sort before other local symbols, but currently | |
6404 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6405 | make a better choice of file name for local symbols by ignoring | |
6406 | file symbols appearing after a given local symbol. */ | |
6407 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6408 | |
252b5132 RH |
6409 | filename = NULL; |
6410 | func = NULL; | |
57426232 | 6411 | file = NULL; |
252b5132 | 6412 | low_func = 0; |
57426232 | 6413 | state = nothing_seen; |
252b5132 RH |
6414 | |
6415 | for (p = symbols; *p != NULL; p++) | |
6416 | { | |
6417 | elf_symbol_type *q; | |
6418 | ||
6419 | q = (elf_symbol_type *) *p; | |
6420 | ||
252b5132 RH |
6421 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6422 | { | |
6423 | default: | |
6424 | break; | |
6425 | case STT_FILE: | |
57426232 JB |
6426 | file = &q->symbol; |
6427 | if (state == symbol_seen) | |
6428 | state = file_after_symbol_seen; | |
6429 | continue; | |
6430 | case STT_SECTION: | |
6431 | continue; | |
252b5132 RH |
6432 | case STT_NOTYPE: |
6433 | case STT_FUNC: | |
6b40fcba | 6434 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6435 | && q->symbol.value >= low_func |
6436 | && q->symbol.value <= offset) | |
6437 | { | |
6438 | func = (asymbol *) q; | |
6439 | low_func = q->symbol.value; | |
57426232 JB |
6440 | if (file == NULL) |
6441 | filename = NULL; | |
6442 | else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL | |
6443 | && state == file_after_symbol_seen) | |
6444 | filename = NULL; | |
6445 | else | |
6446 | filename = bfd_asymbol_name (file); | |
252b5132 RH |
6447 | } |
6448 | break; | |
6449 | } | |
57426232 JB |
6450 | if (state == nothing_seen) |
6451 | state = symbol_seen; | |
252b5132 RH |
6452 | } |
6453 | ||
6454 | if (func == NULL) | |
b34976b6 | 6455 | return FALSE; |
252b5132 | 6456 | |
d1fad7c6 NC |
6457 | if (filename_ptr) |
6458 | *filename_ptr = filename; | |
6459 | if (functionname_ptr) | |
6460 | *functionname_ptr = bfd_asymbol_name (func); | |
6461 | ||
b34976b6 | 6462 | return TRUE; |
d1fad7c6 NC |
6463 | } |
6464 | ||
6465 | /* Find the nearest line to a particular section and offset, | |
6466 | for error reporting. */ | |
6467 | ||
b34976b6 | 6468 | bfd_boolean |
217aa764 AM |
6469 | _bfd_elf_find_nearest_line (bfd *abfd, |
6470 | asection *section, | |
6471 | asymbol **symbols, | |
6472 | bfd_vma offset, | |
6473 | const char **filename_ptr, | |
6474 | const char **functionname_ptr, | |
6475 | unsigned int *line_ptr) | |
d1fad7c6 | 6476 | { |
b34976b6 | 6477 | bfd_boolean found; |
d1fad7c6 NC |
6478 | |
6479 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6480 | filename_ptr, functionname_ptr, |
6481 | line_ptr)) | |
d1fad7c6 NC |
6482 | { |
6483 | if (!*functionname_ptr) | |
4e8a9624 AM |
6484 | elf_find_function (abfd, section, symbols, offset, |
6485 | *filename_ptr ? NULL : filename_ptr, | |
6486 | functionname_ptr); | |
6487 | ||
b34976b6 | 6488 | return TRUE; |
d1fad7c6 NC |
6489 | } |
6490 | ||
6491 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6492 | filename_ptr, functionname_ptr, |
6493 | line_ptr, 0, | |
6494 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6495 | { |
6496 | if (!*functionname_ptr) | |
4e8a9624 AM |
6497 | elf_find_function (abfd, section, symbols, offset, |
6498 | *filename_ptr ? NULL : filename_ptr, | |
6499 | functionname_ptr); | |
6500 | ||
b34976b6 | 6501 | return TRUE; |
d1fad7c6 NC |
6502 | } |
6503 | ||
6504 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6505 | &found, filename_ptr, |
6506 | functionname_ptr, line_ptr, | |
6507 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6508 | return FALSE; |
dc43ada5 | 6509 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6510 | return TRUE; |
d1fad7c6 NC |
6511 | |
6512 | if (symbols == NULL) | |
b34976b6 | 6513 | return FALSE; |
d1fad7c6 NC |
6514 | |
6515 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6516 | filename_ptr, functionname_ptr)) |
b34976b6 | 6517 | return FALSE; |
d1fad7c6 | 6518 | |
252b5132 | 6519 | *line_ptr = 0; |
b34976b6 | 6520 | return TRUE; |
252b5132 RH |
6521 | } |
6522 | ||
6523 | int | |
217aa764 | 6524 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6525 | { |
6526 | int ret; | |
6527 | ||
6528 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6529 | if (! reloc) | |
6530 | ret += get_program_header_size (abfd); | |
6531 | return ret; | |
6532 | } | |
6533 | ||
b34976b6 | 6534 | bfd_boolean |
217aa764 AM |
6535 | _bfd_elf_set_section_contents (bfd *abfd, |
6536 | sec_ptr section, | |
0f867abe | 6537 | const void *location, |
217aa764 AM |
6538 | file_ptr offset, |
6539 | bfd_size_type count) | |
252b5132 RH |
6540 | { |
6541 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6542 | bfd_signed_vma pos; |
252b5132 RH |
6543 | |
6544 | if (! abfd->output_has_begun | |
217aa764 | 6545 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6546 | return FALSE; |
252b5132 RH |
6547 | |
6548 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6549 | pos = hdr->sh_offset + offset; |
6550 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6551 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6552 | return FALSE; |
252b5132 | 6553 | |
b34976b6 | 6554 | return TRUE; |
252b5132 RH |
6555 | } |
6556 | ||
6557 | void | |
217aa764 AM |
6558 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6559 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6560 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6561 | { |
6562 | abort (); | |
6563 | } | |
6564 | ||
252b5132 RH |
6565 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6566 | ||
b34976b6 | 6567 | bfd_boolean |
217aa764 | 6568 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6569 | { |
c044fabd | 6570 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6571 | |
6572 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6573 | { | |
6574 | bfd_reloc_code_real_type code; | |
6575 | reloc_howto_type *howto; | |
6576 | ||
6577 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6578 | equivalent ELF reloc. */ |
252b5132 RH |
6579 | |
6580 | if (areloc->howto->pc_relative) | |
6581 | { | |
6582 | switch (areloc->howto->bitsize) | |
6583 | { | |
6584 | case 8: | |
6585 | code = BFD_RELOC_8_PCREL; | |
6586 | break; | |
6587 | case 12: | |
6588 | code = BFD_RELOC_12_PCREL; | |
6589 | break; | |
6590 | case 16: | |
6591 | code = BFD_RELOC_16_PCREL; | |
6592 | break; | |
6593 | case 24: | |
6594 | code = BFD_RELOC_24_PCREL; | |
6595 | break; | |
6596 | case 32: | |
6597 | code = BFD_RELOC_32_PCREL; | |
6598 | break; | |
6599 | case 64: | |
6600 | code = BFD_RELOC_64_PCREL; | |
6601 | break; | |
6602 | default: | |
6603 | goto fail; | |
6604 | } | |
6605 | ||
6606 | howto = bfd_reloc_type_lookup (abfd, code); | |
6607 | ||
6608 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6609 | { | |
6610 | if (howto->pcrel_offset) | |
6611 | areloc->addend += areloc->address; | |
6612 | else | |
6613 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6614 | } | |
6615 | } | |
6616 | else | |
6617 | { | |
6618 | switch (areloc->howto->bitsize) | |
6619 | { | |
6620 | case 8: | |
6621 | code = BFD_RELOC_8; | |
6622 | break; | |
6623 | case 14: | |
6624 | code = BFD_RELOC_14; | |
6625 | break; | |
6626 | case 16: | |
6627 | code = BFD_RELOC_16; | |
6628 | break; | |
6629 | case 26: | |
6630 | code = BFD_RELOC_26; | |
6631 | break; | |
6632 | case 32: | |
6633 | code = BFD_RELOC_32; | |
6634 | break; | |
6635 | case 64: | |
6636 | code = BFD_RELOC_64; | |
6637 | break; | |
6638 | default: | |
6639 | goto fail; | |
6640 | } | |
6641 | ||
6642 | howto = bfd_reloc_type_lookup (abfd, code); | |
6643 | } | |
6644 | ||
6645 | if (howto) | |
6646 | areloc->howto = howto; | |
6647 | else | |
6648 | goto fail; | |
6649 | } | |
6650 | ||
b34976b6 | 6651 | return TRUE; |
252b5132 RH |
6652 | |
6653 | fail: | |
6654 | (*_bfd_error_handler) | |
d003868e AM |
6655 | (_("%B: unsupported relocation type %s"), |
6656 | abfd, areloc->howto->name); | |
252b5132 | 6657 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6658 | return FALSE; |
252b5132 RH |
6659 | } |
6660 | ||
b34976b6 | 6661 | bfd_boolean |
217aa764 | 6662 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6663 | { |
6664 | if (bfd_get_format (abfd) == bfd_object) | |
6665 | { | |
6666 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6667 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
252b5132 RH |
6668 | } |
6669 | ||
6670 | return _bfd_generic_close_and_cleanup (abfd); | |
6671 | } | |
6672 | ||
6673 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6674 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6675 | range-checking to interfere. There is nothing else to do in processing | |
6676 | this reloc. */ | |
6677 | ||
6678 | bfd_reloc_status_type | |
217aa764 AM |
6679 | _bfd_elf_rel_vtable_reloc_fn |
6680 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6681 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6682 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6683 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6684 | { |
6685 | return bfd_reloc_ok; | |
6686 | } | |
252b5132 RH |
6687 | \f |
6688 | /* Elf core file support. Much of this only works on native | |
6689 | toolchains, since we rely on knowing the | |
6690 | machine-dependent procfs structure in order to pick | |
c044fabd | 6691 | out details about the corefile. */ |
252b5132 RH |
6692 | |
6693 | #ifdef HAVE_SYS_PROCFS_H | |
6694 | # include <sys/procfs.h> | |
6695 | #endif | |
6696 | ||
c044fabd | 6697 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6698 | |
6699 | static int | |
217aa764 | 6700 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6701 | { |
6702 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6703 | + (elf_tdata (abfd)->core_pid)); | |
6704 | } | |
6705 | ||
252b5132 RH |
6706 | /* If there isn't a section called NAME, make one, using |
6707 | data from SECT. Note, this function will generate a | |
6708 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6709 | overwrite it. */ |
252b5132 | 6710 | |
b34976b6 | 6711 | static bfd_boolean |
217aa764 | 6712 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6713 | { |
c044fabd | 6714 | asection *sect2; |
252b5132 RH |
6715 | |
6716 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6717 | return TRUE; |
252b5132 RH |
6718 | |
6719 | sect2 = bfd_make_section (abfd, name); | |
6720 | if (sect2 == NULL) | |
b34976b6 | 6721 | return FALSE; |
252b5132 | 6722 | |
eea6121a | 6723 | sect2->size = sect->size; |
252b5132 RH |
6724 | sect2->filepos = sect->filepos; |
6725 | sect2->flags = sect->flags; | |
6726 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6727 | return TRUE; |
252b5132 RH |
6728 | } |
6729 | ||
bb0082d6 AM |
6730 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6731 | actually creates up to two pseudosections: | |
6732 | - For the single-threaded case, a section named NAME, unless | |
6733 | such a section already exists. | |
6734 | - For the multi-threaded case, a section named "NAME/PID", where | |
6735 | PID is elfcore_make_pid (abfd). | |
6736 | Both pseudosections have identical contents. */ | |
b34976b6 | 6737 | bfd_boolean |
217aa764 AM |
6738 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6739 | char *name, | |
6740 | size_t size, | |
6741 | ufile_ptr filepos) | |
bb0082d6 AM |
6742 | { |
6743 | char buf[100]; | |
6744 | char *threaded_name; | |
d4c88bbb | 6745 | size_t len; |
bb0082d6 AM |
6746 | asection *sect; |
6747 | ||
6748 | /* Build the section name. */ | |
6749 | ||
6750 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 6751 | len = strlen (buf) + 1; |
217aa764 | 6752 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 6753 | if (threaded_name == NULL) |
b34976b6 | 6754 | return FALSE; |
d4c88bbb | 6755 | memcpy (threaded_name, buf, len); |
bb0082d6 | 6756 | |
62f3bb11 | 6757 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 6758 | if (sect == NULL) |
b34976b6 | 6759 | return FALSE; |
eea6121a | 6760 | sect->size = size; |
bb0082d6 AM |
6761 | sect->filepos = filepos; |
6762 | sect->flags = SEC_HAS_CONTENTS; | |
6763 | sect->alignment_power = 2; | |
6764 | ||
936e320b | 6765 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
6766 | } |
6767 | ||
252b5132 | 6768 | /* prstatus_t exists on: |
4a938328 | 6769 | solaris 2.5+ |
252b5132 RH |
6770 | linux 2.[01] + glibc |
6771 | unixware 4.2 | |
6772 | */ | |
6773 | ||
6774 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 6775 | |
b34976b6 | 6776 | static bfd_boolean |
217aa764 | 6777 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6778 | { |
eea6121a | 6779 | size_t size; |
7ee38065 | 6780 | int offset; |
252b5132 | 6781 | |
4a938328 MS |
6782 | if (note->descsz == sizeof (prstatus_t)) |
6783 | { | |
6784 | prstatus_t prstat; | |
252b5132 | 6785 | |
eea6121a | 6786 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6787 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 6788 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 6789 | |
fa49d224 NC |
6790 | /* Do not overwrite the core signal if it |
6791 | has already been set by another thread. */ | |
6792 | if (elf_tdata (abfd)->core_signal == 0) | |
6793 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 6794 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 6795 | |
4a938328 MS |
6796 | /* pr_who exists on: |
6797 | solaris 2.5+ | |
6798 | unixware 4.2 | |
6799 | pr_who doesn't exist on: | |
6800 | linux 2.[01] | |
6801 | */ | |
252b5132 | 6802 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 6803 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 6804 | #endif |
4a938328 | 6805 | } |
7ee38065 | 6806 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
6807 | else if (note->descsz == sizeof (prstatus32_t)) |
6808 | { | |
6809 | /* 64-bit host, 32-bit corefile */ | |
6810 | prstatus32_t prstat; | |
6811 | ||
eea6121a | 6812 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6813 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
6814 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
6815 | ||
fa49d224 NC |
6816 | /* Do not overwrite the core signal if it |
6817 | has already been set by another thread. */ | |
6818 | if (elf_tdata (abfd)->core_signal == 0) | |
6819 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
6820 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
6821 | ||
6822 | /* pr_who exists on: | |
6823 | solaris 2.5+ | |
6824 | unixware 4.2 | |
6825 | pr_who doesn't exist on: | |
6826 | linux 2.[01] | |
6827 | */ | |
7ee38065 | 6828 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
6829 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
6830 | #endif | |
6831 | } | |
7ee38065 | 6832 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
6833 | else |
6834 | { | |
6835 | /* Fail - we don't know how to handle any other | |
6836 | note size (ie. data object type). */ | |
b34976b6 | 6837 | return TRUE; |
4a938328 | 6838 | } |
252b5132 | 6839 | |
bb0082d6 | 6840 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 6841 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 6842 | size, note->descpos + offset); |
252b5132 RH |
6843 | } |
6844 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
6845 | ||
bb0082d6 | 6846 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 6847 | static bfd_boolean |
217aa764 AM |
6848 | elfcore_make_note_pseudosection (bfd *abfd, |
6849 | char *name, | |
6850 | Elf_Internal_Note *note) | |
252b5132 | 6851 | { |
936e320b AM |
6852 | return _bfd_elfcore_make_pseudosection (abfd, name, |
6853 | note->descsz, note->descpos); | |
252b5132 RH |
6854 | } |
6855 | ||
ff08c6bb JB |
6856 | /* There isn't a consistent prfpregset_t across platforms, |
6857 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
6858 | data structure apart. */ |
6859 | ||
b34976b6 | 6860 | static bfd_boolean |
217aa764 | 6861 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6862 | { |
6863 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
6864 | } | |
6865 | ||
ff08c6bb JB |
6866 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
6867 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
6868 | literally. */ | |
c044fabd | 6869 | |
b34976b6 | 6870 | static bfd_boolean |
217aa764 | 6871 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6872 | { |
6873 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
6874 | } | |
6875 | ||
252b5132 | 6876 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 6877 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 6878 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
6879 | typedef prpsinfo32_t elfcore_psinfo32_t; |
6880 | #endif | |
252b5132 RH |
6881 | #endif |
6882 | ||
6883 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 6884 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 6885 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
6886 | typedef psinfo32_t elfcore_psinfo32_t; |
6887 | #endif | |
252b5132 RH |
6888 | #endif |
6889 | ||
252b5132 RH |
6890 | /* return a malloc'ed copy of a string at START which is at |
6891 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 6892 | the copy will always have a terminating '\0'. */ |
252b5132 | 6893 | |
936e320b | 6894 | char * |
217aa764 | 6895 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 6896 | { |
dc810e39 | 6897 | char *dups; |
c044fabd | 6898 | char *end = memchr (start, '\0', max); |
dc810e39 | 6899 | size_t len; |
252b5132 RH |
6900 | |
6901 | if (end == NULL) | |
6902 | len = max; | |
6903 | else | |
6904 | len = end - start; | |
6905 | ||
217aa764 | 6906 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 6907 | if (dups == NULL) |
252b5132 RH |
6908 | return NULL; |
6909 | ||
dc810e39 AM |
6910 | memcpy (dups, start, len); |
6911 | dups[len] = '\0'; | |
252b5132 | 6912 | |
dc810e39 | 6913 | return dups; |
252b5132 RH |
6914 | } |
6915 | ||
bb0082d6 | 6916 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 6917 | static bfd_boolean |
217aa764 | 6918 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6919 | { |
4a938328 MS |
6920 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
6921 | { | |
6922 | elfcore_psinfo_t psinfo; | |
252b5132 | 6923 | |
7ee38065 | 6924 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 6925 | |
4a938328 | 6926 | elf_tdata (abfd)->core_program |
936e320b AM |
6927 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
6928 | sizeof (psinfo.pr_fname)); | |
252b5132 | 6929 | |
4a938328 | 6930 | elf_tdata (abfd)->core_command |
936e320b AM |
6931 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
6932 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 6933 | } |
7ee38065 | 6934 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
6935 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
6936 | { | |
6937 | /* 64-bit host, 32-bit corefile */ | |
6938 | elfcore_psinfo32_t psinfo; | |
6939 | ||
7ee38065 | 6940 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 6941 | |
4a938328 | 6942 | elf_tdata (abfd)->core_program |
936e320b AM |
6943 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
6944 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
6945 | |
6946 | elf_tdata (abfd)->core_command | |
936e320b AM |
6947 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
6948 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
6949 | } |
6950 | #endif | |
6951 | ||
6952 | else | |
6953 | { | |
6954 | /* Fail - we don't know how to handle any other | |
6955 | note size (ie. data object type). */ | |
b34976b6 | 6956 | return TRUE; |
4a938328 | 6957 | } |
252b5132 RH |
6958 | |
6959 | /* Note that for some reason, a spurious space is tacked | |
6960 | onto the end of the args in some (at least one anyway) | |
c044fabd | 6961 | implementations, so strip it off if it exists. */ |
252b5132 RH |
6962 | |
6963 | { | |
c044fabd | 6964 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
6965 | int n = strlen (command); |
6966 | ||
6967 | if (0 < n && command[n - 1] == ' ') | |
6968 | command[n - 1] = '\0'; | |
6969 | } | |
6970 | ||
b34976b6 | 6971 | return TRUE; |
252b5132 RH |
6972 | } |
6973 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
6974 | ||
252b5132 | 6975 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 6976 | static bfd_boolean |
217aa764 | 6977 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6978 | { |
f572a39d AM |
6979 | if (note->descsz == sizeof (pstatus_t) |
6980 | #if defined (HAVE_PXSTATUS_T) | |
6981 | || note->descsz == sizeof (pxstatus_t) | |
6982 | #endif | |
6983 | ) | |
4a938328 MS |
6984 | { |
6985 | pstatus_t pstat; | |
252b5132 | 6986 | |
4a938328 | 6987 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 6988 | |
4a938328 MS |
6989 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
6990 | } | |
7ee38065 | 6991 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
6992 | else if (note->descsz == sizeof (pstatus32_t)) |
6993 | { | |
6994 | /* 64-bit host, 32-bit corefile */ | |
6995 | pstatus32_t pstat; | |
252b5132 | 6996 | |
4a938328 | 6997 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 6998 | |
4a938328 MS |
6999 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7000 | } | |
7001 | #endif | |
252b5132 RH |
7002 | /* Could grab some more details from the "representative" |
7003 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7004 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7005 | |
b34976b6 | 7006 | return TRUE; |
252b5132 RH |
7007 | } |
7008 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7009 | ||
252b5132 | 7010 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7011 | static bfd_boolean |
217aa764 | 7012 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7013 | { |
7014 | lwpstatus_t lwpstat; | |
7015 | char buf[100]; | |
c044fabd | 7016 | char *name; |
d4c88bbb | 7017 | size_t len; |
c044fabd | 7018 | asection *sect; |
252b5132 | 7019 | |
f572a39d AM |
7020 | if (note->descsz != sizeof (lwpstat) |
7021 | #if defined (HAVE_LWPXSTATUS_T) | |
7022 | && note->descsz != sizeof (lwpxstatus_t) | |
7023 | #endif | |
7024 | ) | |
b34976b6 | 7025 | return TRUE; |
252b5132 RH |
7026 | |
7027 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7028 | ||
7029 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7030 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7031 | ||
c044fabd | 7032 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7033 | |
7034 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7035 | len = strlen (buf) + 1; |
217aa764 | 7036 | name = bfd_alloc (abfd, len); |
252b5132 | 7037 | if (name == NULL) |
b34976b6 | 7038 | return FALSE; |
d4c88bbb | 7039 | memcpy (name, buf, len); |
252b5132 | 7040 | |
62f3bb11 | 7041 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7042 | if (sect == NULL) |
b34976b6 | 7043 | return FALSE; |
252b5132 RH |
7044 | |
7045 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7046 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7047 | sect->filepos = note->descpos |
7048 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7049 | #endif | |
7050 | ||
7051 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7052 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7053 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7054 | #endif | |
7055 | ||
7056 | sect->flags = SEC_HAS_CONTENTS; | |
7057 | sect->alignment_power = 2; | |
7058 | ||
7059 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7060 | return FALSE; |
252b5132 RH |
7061 | |
7062 | /* Make a ".reg2/999" section */ | |
7063 | ||
7064 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7065 | len = strlen (buf) + 1; |
217aa764 | 7066 | name = bfd_alloc (abfd, len); |
252b5132 | 7067 | if (name == NULL) |
b34976b6 | 7068 | return FALSE; |
d4c88bbb | 7069 | memcpy (name, buf, len); |
252b5132 | 7070 | |
62f3bb11 | 7071 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7072 | if (sect == NULL) |
b34976b6 | 7073 | return FALSE; |
252b5132 RH |
7074 | |
7075 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7076 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7077 | sect->filepos = note->descpos |
7078 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7079 | #endif | |
7080 | ||
7081 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7082 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7083 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7084 | #endif | |
7085 | ||
7086 | sect->flags = SEC_HAS_CONTENTS; | |
7087 | sect->alignment_power = 2; | |
7088 | ||
936e320b | 7089 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7090 | } |
7091 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7092 | ||
16e9c715 | 7093 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7094 | static bfd_boolean |
217aa764 | 7095 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7096 | { |
7097 | char buf[30]; | |
c044fabd | 7098 | char *name; |
d4c88bbb | 7099 | size_t len; |
c044fabd | 7100 | asection *sect; |
16e9c715 NC |
7101 | win32_pstatus_t pstatus; |
7102 | ||
7103 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7104 | return TRUE; |
16e9c715 | 7105 | |
e8eab623 | 7106 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7107 | |
7108 | switch (pstatus.data_type) | |
16e9c715 NC |
7109 | { |
7110 | case NOTE_INFO_PROCESS: | |
7111 | /* FIXME: need to add ->core_command. */ | |
7112 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7113 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7114 | break; |
16e9c715 NC |
7115 | |
7116 | case NOTE_INFO_THREAD: | |
7117 | /* Make a ".reg/999" section. */ | |
1f170678 | 7118 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7119 | |
d4c88bbb | 7120 | len = strlen (buf) + 1; |
217aa764 | 7121 | name = bfd_alloc (abfd, len); |
16e9c715 | 7122 | if (name == NULL) |
b34976b6 | 7123 | return FALSE; |
c044fabd | 7124 | |
d4c88bbb | 7125 | memcpy (name, buf, len); |
16e9c715 | 7126 | |
62f3bb11 | 7127 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7128 | if (sect == NULL) |
b34976b6 | 7129 | return FALSE; |
c044fabd | 7130 | |
eea6121a | 7131 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7132 | sect->filepos = (note->descpos |
7133 | + offsetof (struct win32_pstatus, | |
7134 | data.thread_info.thread_context)); | |
16e9c715 NC |
7135 | sect->flags = SEC_HAS_CONTENTS; |
7136 | sect->alignment_power = 2; | |
7137 | ||
7138 | if (pstatus.data.thread_info.is_active_thread) | |
7139 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7140 | return FALSE; |
16e9c715 NC |
7141 | break; |
7142 | ||
7143 | case NOTE_INFO_MODULE: | |
7144 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7145 | sprintf (buf, ".module/%08lx", |
7146 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7147 | |
d4c88bbb | 7148 | len = strlen (buf) + 1; |
217aa764 | 7149 | name = bfd_alloc (abfd, len); |
16e9c715 | 7150 | if (name == NULL) |
b34976b6 | 7151 | return FALSE; |
c044fabd | 7152 | |
d4c88bbb | 7153 | memcpy (name, buf, len); |
252b5132 | 7154 | |
62f3bb11 | 7155 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7156 | |
16e9c715 | 7157 | if (sect == NULL) |
b34976b6 | 7158 | return FALSE; |
c044fabd | 7159 | |
eea6121a | 7160 | sect->size = note->descsz; |
16e9c715 NC |
7161 | sect->filepos = note->descpos; |
7162 | sect->flags = SEC_HAS_CONTENTS; | |
7163 | sect->alignment_power = 2; | |
7164 | break; | |
7165 | ||
7166 | default: | |
b34976b6 | 7167 | return TRUE; |
16e9c715 NC |
7168 | } |
7169 | ||
b34976b6 | 7170 | return TRUE; |
16e9c715 NC |
7171 | } |
7172 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7173 | |
b34976b6 | 7174 | static bfd_boolean |
217aa764 | 7175 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7176 | { |
9c5bfbb7 | 7177 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7178 | |
252b5132 RH |
7179 | switch (note->type) |
7180 | { | |
7181 | default: | |
b34976b6 | 7182 | return TRUE; |
252b5132 | 7183 | |
252b5132 | 7184 | case NT_PRSTATUS: |
bb0082d6 AM |
7185 | if (bed->elf_backend_grok_prstatus) |
7186 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7187 | return TRUE; |
bb0082d6 | 7188 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7189 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7190 | #else |
b34976b6 | 7191 | return TRUE; |
252b5132 RH |
7192 | #endif |
7193 | ||
7194 | #if defined (HAVE_PSTATUS_T) | |
7195 | case NT_PSTATUS: | |
7196 | return elfcore_grok_pstatus (abfd, note); | |
7197 | #endif | |
7198 | ||
7199 | #if defined (HAVE_LWPSTATUS_T) | |
7200 | case NT_LWPSTATUS: | |
7201 | return elfcore_grok_lwpstatus (abfd, note); | |
7202 | #endif | |
7203 | ||
7204 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7205 | return elfcore_grok_prfpreg (abfd, note); | |
7206 | ||
16e9c715 | 7207 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7208 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7209 | return elfcore_grok_win32pstatus (abfd, note); |
7210 | #endif | |
7211 | ||
c044fabd | 7212 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7213 | if (note->namesz == 6 |
7214 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7215 | return elfcore_grok_prxfpreg (abfd, note); |
7216 | else | |
b34976b6 | 7217 | return TRUE; |
ff08c6bb | 7218 | |
252b5132 RH |
7219 | case NT_PRPSINFO: |
7220 | case NT_PSINFO: | |
bb0082d6 AM |
7221 | if (bed->elf_backend_grok_psinfo) |
7222 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7223 | return TRUE; |
bb0082d6 | 7224 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7225 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7226 | #else |
b34976b6 | 7227 | return TRUE; |
252b5132 | 7228 | #endif |
3333a7c3 RM |
7229 | |
7230 | case NT_AUXV: | |
7231 | { | |
62f3bb11 | 7232 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7233 | |
7234 | if (sect == NULL) | |
7235 | return FALSE; | |
eea6121a | 7236 | sect->size = note->descsz; |
3333a7c3 RM |
7237 | sect->filepos = note->descpos; |
7238 | sect->flags = SEC_HAS_CONTENTS; | |
7239 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7240 | ||
7241 | return TRUE; | |
7242 | } | |
252b5132 RH |
7243 | } |
7244 | } | |
7245 | ||
b34976b6 | 7246 | static bfd_boolean |
217aa764 | 7247 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7248 | { |
7249 | char *cp; | |
7250 | ||
7251 | cp = strchr (note->namedata, '@'); | |
7252 | if (cp != NULL) | |
7253 | { | |
d2b64500 | 7254 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7255 | return TRUE; |
50b2bdb7 | 7256 | } |
b34976b6 | 7257 | return FALSE; |
50b2bdb7 AM |
7258 | } |
7259 | ||
b34976b6 | 7260 | static bfd_boolean |
217aa764 | 7261 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7262 | { |
7263 | ||
7264 | /* Signal number at offset 0x08. */ | |
7265 | elf_tdata (abfd)->core_signal | |
7266 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7267 | ||
7268 | /* Process ID at offset 0x50. */ | |
7269 | elf_tdata (abfd)->core_pid | |
7270 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7271 | ||
7272 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7273 | elf_tdata (abfd)->core_command | |
7274 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7275 | ||
7720ba9f MK |
7276 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7277 | note); | |
50b2bdb7 AM |
7278 | } |
7279 | ||
b34976b6 | 7280 | static bfd_boolean |
217aa764 | 7281 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7282 | { |
7283 | int lwp; | |
7284 | ||
7285 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7286 | elf_tdata (abfd)->core_lwpid = lwp; | |
7287 | ||
b4db1224 | 7288 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7289 | { |
7290 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7291 | find this note before any of the others, which is fine, | |
7292 | since the kernel writes this note out first when it | |
7293 | creates a core file. */ | |
47d9a591 | 7294 | |
50b2bdb7 AM |
7295 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7296 | } | |
7297 | ||
b4db1224 JT |
7298 | /* As of Jan 2002 there are no other machine-independent notes |
7299 | defined for NetBSD core files. If the note type is less | |
7300 | than the start of the machine-dependent note types, we don't | |
7301 | understand it. */ | |
47d9a591 | 7302 | |
b4db1224 | 7303 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7304 | return TRUE; |
50b2bdb7 AM |
7305 | |
7306 | ||
7307 | switch (bfd_get_arch (abfd)) | |
7308 | { | |
7309 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7310 | PT_GETFPREGS == mach+2. */ | |
7311 | ||
7312 | case bfd_arch_alpha: | |
7313 | case bfd_arch_sparc: | |
7314 | switch (note->type) | |
7315 | { | |
b4db1224 | 7316 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7317 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7318 | ||
b4db1224 | 7319 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7320 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7321 | ||
7322 | default: | |
b34976b6 | 7323 | return TRUE; |
50b2bdb7 AM |
7324 | } |
7325 | ||
7326 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7327 | PT_GETFPREGS == mach+3. */ | |
7328 | ||
7329 | default: | |
7330 | switch (note->type) | |
7331 | { | |
b4db1224 | 7332 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7333 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7334 | ||
b4db1224 | 7335 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7336 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7337 | ||
7338 | default: | |
b34976b6 | 7339 | return TRUE; |
50b2bdb7 AM |
7340 | } |
7341 | } | |
7342 | /* NOTREACHED */ | |
7343 | } | |
7344 | ||
07c6e936 | 7345 | static bfd_boolean |
217aa764 | 7346 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7347 | { |
7348 | void *ddata = note->descdata; | |
7349 | char buf[100]; | |
7350 | char *name; | |
7351 | asection *sect; | |
f8843e87 AM |
7352 | short sig; |
7353 | unsigned flags; | |
07c6e936 NC |
7354 | |
7355 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7356 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7357 | ||
f8843e87 AM |
7358 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7359 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7360 | ||
7361 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7362 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7363 | |
7364 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7365 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7366 | { | |
7367 | elf_tdata (abfd)->core_signal = sig; | |
7368 | elf_tdata (abfd)->core_lwpid = *tid; | |
7369 | } | |
07c6e936 | 7370 | |
f8843e87 AM |
7371 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7372 | do not come from signals so we make sure we set the current | |
7373 | thread just in case. */ | |
7374 | if (flags & 0x00000080) | |
7375 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7376 | |
7377 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7378 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7379 | |
217aa764 | 7380 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7381 | if (name == NULL) |
7382 | return FALSE; | |
7383 | strcpy (name, buf); | |
7384 | ||
62f3bb11 | 7385 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7386 | if (sect == NULL) |
7387 | return FALSE; | |
7388 | ||
eea6121a | 7389 | sect->size = note->descsz; |
07c6e936 NC |
7390 | sect->filepos = note->descpos; |
7391 | sect->flags = SEC_HAS_CONTENTS; | |
7392 | sect->alignment_power = 2; | |
7393 | ||
7394 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7395 | } | |
7396 | ||
7397 | static bfd_boolean | |
d69f560c KW |
7398 | elfcore_grok_nto_regs (bfd *abfd, |
7399 | Elf_Internal_Note *note, | |
7400 | pid_t tid, | |
7401 | char *base) | |
07c6e936 NC |
7402 | { |
7403 | char buf[100]; | |
7404 | char *name; | |
7405 | asection *sect; | |
7406 | ||
d69f560c | 7407 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7408 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7409 | |
217aa764 | 7410 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7411 | if (name == NULL) |
7412 | return FALSE; | |
7413 | strcpy (name, buf); | |
7414 | ||
62f3bb11 | 7415 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7416 | if (sect == NULL) |
7417 | return FALSE; | |
7418 | ||
eea6121a | 7419 | sect->size = note->descsz; |
07c6e936 NC |
7420 | sect->filepos = note->descpos; |
7421 | sect->flags = SEC_HAS_CONTENTS; | |
7422 | sect->alignment_power = 2; | |
7423 | ||
f8843e87 AM |
7424 | /* This is the current thread. */ |
7425 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7426 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7427 | |
7428 | return TRUE; | |
07c6e936 NC |
7429 | } |
7430 | ||
7431 | #define BFD_QNT_CORE_INFO 7 | |
7432 | #define BFD_QNT_CORE_STATUS 8 | |
7433 | #define BFD_QNT_CORE_GREG 9 | |
7434 | #define BFD_QNT_CORE_FPREG 10 | |
7435 | ||
7436 | static bfd_boolean | |
217aa764 | 7437 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7438 | { |
7439 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7440 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7441 | function. */ |
7442 | static pid_t tid = 1; | |
7443 | ||
7444 | switch (note->type) | |
7445 | { | |
d69f560c KW |
7446 | case BFD_QNT_CORE_INFO: |
7447 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7448 | case BFD_QNT_CORE_STATUS: | |
7449 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7450 | case BFD_QNT_CORE_GREG: | |
7451 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7452 | case BFD_QNT_CORE_FPREG: | |
7453 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7454 | default: | |
7455 | return TRUE; | |
07c6e936 NC |
7456 | } |
7457 | } | |
7458 | ||
7c76fa91 MS |
7459 | /* Function: elfcore_write_note |
7460 | ||
47d9a591 | 7461 | Inputs: |
7c76fa91 MS |
7462 | buffer to hold note |
7463 | name of note | |
7464 | type of note | |
7465 | data for note | |
7466 | size of data for note | |
7467 | ||
7468 | Return: | |
7469 | End of buffer containing note. */ | |
7470 | ||
7471 | char * | |
217aa764 AM |
7472 | elfcore_write_note (bfd *abfd, |
7473 | char *buf, | |
7474 | int *bufsiz, | |
7475 | const char *name, | |
7476 | int type, | |
7477 | const void *input, | |
7478 | int size) | |
7c76fa91 MS |
7479 | { |
7480 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7481 | size_t namesz; |
7482 | size_t pad; | |
7483 | size_t newspace; | |
7c76fa91 MS |
7484 | char *p, *dest; |
7485 | ||
d4c88bbb AM |
7486 | namesz = 0; |
7487 | pad = 0; | |
7488 | if (name != NULL) | |
7489 | { | |
9c5bfbb7 | 7490 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7491 | |
7492 | namesz = strlen (name) + 1; | |
7493 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7494 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7495 | } |
7496 | ||
5de3bf90 | 7497 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7498 | |
7c76fa91 MS |
7499 | p = realloc (buf, *bufsiz + newspace); |
7500 | dest = p + *bufsiz; | |
7501 | *bufsiz += newspace; | |
7502 | xnp = (Elf_External_Note *) dest; | |
7503 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7504 | H_PUT_32 (abfd, size, xnp->descsz); | |
7505 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7506 | dest = xnp->name; |
7507 | if (name != NULL) | |
7508 | { | |
7509 | memcpy (dest, name, namesz); | |
7510 | dest += namesz; | |
7511 | while (pad != 0) | |
7512 | { | |
7513 | *dest++ = '\0'; | |
7514 | --pad; | |
7515 | } | |
7516 | } | |
7517 | memcpy (dest, input, size); | |
7c76fa91 MS |
7518 | return p; |
7519 | } | |
7520 | ||
7521 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7522 | char * | |
217aa764 AM |
7523 | elfcore_write_prpsinfo (bfd *abfd, |
7524 | char *buf, | |
7525 | int *bufsiz, | |
7526 | const char *fname, | |
7527 | const char *psargs) | |
7c76fa91 MS |
7528 | { |
7529 | int note_type; | |
7530 | char *note_name = "CORE"; | |
7531 | ||
7532 | #if defined (HAVE_PSINFO_T) | |
7533 | psinfo_t data; | |
7534 | note_type = NT_PSINFO; | |
7535 | #else | |
7536 | prpsinfo_t data; | |
7537 | note_type = NT_PRPSINFO; | |
7538 | #endif | |
7539 | ||
7540 | memset (&data, 0, sizeof (data)); | |
7541 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7542 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7543 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7544 | note_name, note_type, &data, sizeof (data)); |
7545 | } | |
7546 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7547 | ||
7548 | #if defined (HAVE_PRSTATUS_T) | |
7549 | char * | |
217aa764 AM |
7550 | elfcore_write_prstatus (bfd *abfd, |
7551 | char *buf, | |
7552 | int *bufsiz, | |
7553 | long pid, | |
7554 | int cursig, | |
7555 | const void *gregs) | |
7c76fa91 MS |
7556 | { |
7557 | prstatus_t prstat; | |
7558 | char *note_name = "CORE"; | |
7559 | ||
7560 | memset (&prstat, 0, sizeof (prstat)); | |
7561 | prstat.pr_pid = pid; | |
7562 | prstat.pr_cursig = cursig; | |
c106e334 | 7563 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7564 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7565 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7566 | } | |
7567 | #endif /* HAVE_PRSTATUS_T */ | |
7568 | ||
51316059 MS |
7569 | #if defined (HAVE_LWPSTATUS_T) |
7570 | char * | |
217aa764 AM |
7571 | elfcore_write_lwpstatus (bfd *abfd, |
7572 | char *buf, | |
7573 | int *bufsiz, | |
7574 | long pid, | |
7575 | int cursig, | |
7576 | const void *gregs) | |
51316059 MS |
7577 | { |
7578 | lwpstatus_t lwpstat; | |
7579 | char *note_name = "CORE"; | |
7580 | ||
7581 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7582 | lwpstat.pr_lwpid = pid >> 16; | |
7583 | lwpstat.pr_cursig = cursig; | |
7584 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7585 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7586 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7587 | #if !defined(gregs) | |
7588 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7589 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7590 | #else | |
7591 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7592 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7593 | #endif | |
7594 | #endif | |
47d9a591 | 7595 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7596 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7597 | } | |
7598 | #endif /* HAVE_LWPSTATUS_T */ | |
7599 | ||
7c76fa91 MS |
7600 | #if defined (HAVE_PSTATUS_T) |
7601 | char * | |
217aa764 AM |
7602 | elfcore_write_pstatus (bfd *abfd, |
7603 | char *buf, | |
7604 | int *bufsiz, | |
7605 | long pid, | |
7606 | int cursig, | |
7607 | const void *gregs) | |
7c76fa91 MS |
7608 | { |
7609 | pstatus_t pstat; | |
7610 | char *note_name = "CORE"; | |
7611 | ||
51316059 MS |
7612 | memset (&pstat, 0, sizeof (pstat)); |
7613 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7614 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7615 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7616 | return buf; | |
7c76fa91 MS |
7617 | } |
7618 | #endif /* HAVE_PSTATUS_T */ | |
7619 | ||
7620 | char * | |
217aa764 AM |
7621 | elfcore_write_prfpreg (bfd *abfd, |
7622 | char *buf, | |
7623 | int *bufsiz, | |
7624 | const void *fpregs, | |
7625 | int size) | |
7c76fa91 MS |
7626 | { |
7627 | char *note_name = "CORE"; | |
47d9a591 | 7628 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7629 | note_name, NT_FPREGSET, fpregs, size); |
7630 | } | |
7631 | ||
7632 | char * | |
217aa764 AM |
7633 | elfcore_write_prxfpreg (bfd *abfd, |
7634 | char *buf, | |
7635 | int *bufsiz, | |
7636 | const void *xfpregs, | |
7637 | int size) | |
7c76fa91 MS |
7638 | { |
7639 | char *note_name = "LINUX"; | |
47d9a591 | 7640 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7641 | note_name, NT_PRXFPREG, xfpregs, size); |
7642 | } | |
7643 | ||
b34976b6 | 7644 | static bfd_boolean |
217aa764 | 7645 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7646 | { |
c044fabd KH |
7647 | char *buf; |
7648 | char *p; | |
252b5132 RH |
7649 | |
7650 | if (size <= 0) | |
b34976b6 | 7651 | return TRUE; |
252b5132 | 7652 | |
dc810e39 | 7653 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7654 | return FALSE; |
252b5132 | 7655 | |
dc810e39 | 7656 | buf = bfd_malloc (size); |
252b5132 | 7657 | if (buf == NULL) |
b34976b6 | 7658 | return FALSE; |
252b5132 | 7659 | |
dc810e39 | 7660 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7661 | { |
7662 | error: | |
7663 | free (buf); | |
b34976b6 | 7664 | return FALSE; |
252b5132 RH |
7665 | } |
7666 | ||
7667 | p = buf; | |
7668 | while (p < buf + size) | |
7669 | { | |
c044fabd KH |
7670 | /* FIXME: bad alignment assumption. */ |
7671 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7672 | Elf_Internal_Note in; |
7673 | ||
dc810e39 | 7674 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7675 | |
dc810e39 | 7676 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7677 | in.namedata = xnp->name; |
7678 | ||
dc810e39 | 7679 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7680 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7681 | in.descpos = offset + (in.descdata - buf); | |
7682 | ||
50b2bdb7 AM |
7683 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7684 | { | |
7685 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7686 | goto error; | |
7687 | } | |
07c6e936 NC |
7688 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7689 | { | |
7690 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7691 | goto error; | |
7692 | } | |
50b2bdb7 AM |
7693 | else |
7694 | { | |
7695 | if (! elfcore_grok_note (abfd, &in)) | |
7696 | goto error; | |
7697 | } | |
252b5132 RH |
7698 | |
7699 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7700 | } | |
7701 | ||
7702 | free (buf); | |
b34976b6 | 7703 | return TRUE; |
252b5132 | 7704 | } |
98d8431c JB |
7705 | \f |
7706 | /* Providing external access to the ELF program header table. */ | |
7707 | ||
7708 | /* Return an upper bound on the number of bytes required to store a | |
7709 | copy of ABFD's program header table entries. Return -1 if an error | |
7710 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7711 | |
98d8431c | 7712 | long |
217aa764 | 7713 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7714 | { |
7715 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7716 | { | |
7717 | bfd_set_error (bfd_error_wrong_format); | |
7718 | return -1; | |
7719 | } | |
7720 | ||
936e320b | 7721 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7722 | } |
7723 | ||
98d8431c JB |
7724 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7725 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7726 | defined in include/elf/internal.h. To find out how large the | |
7727 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7728 | ||
7729 | Return the number of program header table entries read, or -1 if an | |
7730 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7731 | |
98d8431c | 7732 | int |
217aa764 | 7733 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7734 | { |
7735 | int num_phdrs; | |
7736 | ||
7737 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7738 | { | |
7739 | bfd_set_error (bfd_error_wrong_format); | |
7740 | return -1; | |
7741 | } | |
7742 | ||
7743 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7744 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7745 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7746 | ||
7747 | return num_phdrs; | |
7748 | } | |
ae4221d7 L |
7749 | |
7750 | void | |
217aa764 | 7751 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 7752 | { |
d3b05f8d | 7753 | #ifdef BFD64 |
ae4221d7 L |
7754 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7755 | ||
7756 | i_ehdrp = elf_elfheader (abfd); | |
7757 | if (i_ehdrp == NULL) | |
7758 | sprintf_vma (buf, value); | |
7759 | else | |
7760 | { | |
7761 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7762 | { |
ae4221d7 | 7763 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7764 | sprintf (buf, "%016lx", value); |
ae4221d7 | 7765 | #else |
cc55aec9 AM |
7766 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
7767 | _bfd_int64_low (value)); | |
ae4221d7 | 7768 | #endif |
cc55aec9 | 7769 | } |
ae4221d7 L |
7770 | else |
7771 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
7772 | } | |
d3b05f8d L |
7773 | #else |
7774 | sprintf_vma (buf, value); | |
7775 | #endif | |
ae4221d7 L |
7776 | } |
7777 | ||
7778 | void | |
217aa764 | 7779 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 7780 | { |
d3b05f8d | 7781 | #ifdef BFD64 |
ae4221d7 L |
7782 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7783 | ||
7784 | i_ehdrp = elf_elfheader (abfd); | |
7785 | if (i_ehdrp == NULL) | |
7786 | fprintf_vma ((FILE *) stream, value); | |
7787 | else | |
7788 | { | |
7789 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7790 | { |
ae4221d7 | 7791 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7792 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 7793 | #else |
cc55aec9 AM |
7794 | fprintf ((FILE *) stream, "%08lx%08lx", |
7795 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 7796 | #endif |
cc55aec9 | 7797 | } |
ae4221d7 L |
7798 | else |
7799 | fprintf ((FILE *) stream, "%08lx", | |
7800 | (unsigned long) (value & 0xffffffff)); | |
7801 | } | |
d3b05f8d L |
7802 | #else |
7803 | fprintf_vma ((FILE *) stream, value); | |
7804 | #endif | |
ae4221d7 | 7805 | } |
db6751f2 JJ |
7806 | |
7807 | enum elf_reloc_type_class | |
217aa764 | 7808 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
7809 | { |
7810 | return reloc_class_normal; | |
7811 | } | |
f8df10f4 | 7812 | |
47d9a591 | 7813 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
7814 | relocation against a local symbol. */ |
7815 | ||
7816 | bfd_vma | |
217aa764 AM |
7817 | _bfd_elf_rela_local_sym (bfd *abfd, |
7818 | Elf_Internal_Sym *sym, | |
8517fae7 | 7819 | asection **psec, |
217aa764 | 7820 | Elf_Internal_Rela *rel) |
f8df10f4 | 7821 | { |
8517fae7 | 7822 | asection *sec = *psec; |
f8df10f4 JJ |
7823 | bfd_vma relocation; |
7824 | ||
7825 | relocation = (sec->output_section->vma | |
7826 | + sec->output_offset | |
7827 | + sym->st_value); | |
7828 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 7829 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 7830 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 7831 | { |
f8df10f4 | 7832 | rel->r_addend = |
8517fae7 | 7833 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 7834 | elf_section_data (sec)->sec_info, |
753731ee AM |
7835 | sym->st_value + rel->r_addend); |
7836 | if (sec != *psec) | |
7837 | { | |
7838 | /* If we have changed the section, and our original section is | |
7839 | marked with SEC_EXCLUDE, it means that the original | |
7840 | SEC_MERGE section has been completely subsumed in some | |
7841 | other SEC_MERGE section. In this case, we need to leave | |
7842 | some info around for --emit-relocs. */ | |
7843 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7844 | sec->kept_section = *psec; | |
7845 | sec = *psec; | |
7846 | } | |
8517fae7 AM |
7847 | rel->r_addend -= relocation; |
7848 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
7849 | } |
7850 | return relocation; | |
7851 | } | |
c629eae0 JJ |
7852 | |
7853 | bfd_vma | |
217aa764 AM |
7854 | _bfd_elf_rel_local_sym (bfd *abfd, |
7855 | Elf_Internal_Sym *sym, | |
7856 | asection **psec, | |
7857 | bfd_vma addend) | |
47d9a591 | 7858 | { |
c629eae0 JJ |
7859 | asection *sec = *psec; |
7860 | ||
68bfbfcc | 7861 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
7862 | return sym->st_value + addend; |
7863 | ||
7864 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 7865 | elf_section_data (sec)->sec_info, |
753731ee | 7866 | sym->st_value + addend); |
c629eae0 JJ |
7867 | } |
7868 | ||
7869 | bfd_vma | |
217aa764 | 7870 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 7871 | struct bfd_link_info *info, |
217aa764 AM |
7872 | asection *sec, |
7873 | bfd_vma offset) | |
c629eae0 | 7874 | { |
68bfbfcc | 7875 | switch (sec->sec_info_type) |
65765700 JJ |
7876 | { |
7877 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
7878 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
7879 | offset); | |
65765700 | 7880 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 7881 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
7882 | default: |
7883 | return offset; | |
7884 | } | |
c629eae0 | 7885 | } |
3333a7c3 RM |
7886 | \f |
7887 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
7888 | reconstruct an ELF file by reading the segments out of remote memory | |
7889 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
7890 | points to. If not null, *LOADBASEP is filled in with the difference | |
7891 | between the VMAs from which the segments were read, and the VMAs the | |
7892 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
7893 | ||
7894 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
7895 | remote memory at target address VMA into the local buffer at MYADDR; it | |
7896 | should return zero on success or an `errno' code on failure. TEMPL must | |
7897 | be a BFD for an ELF target with the word size and byte order found in | |
7898 | the remote memory. */ | |
7899 | ||
7900 | bfd * | |
217aa764 AM |
7901 | bfd_elf_bfd_from_remote_memory |
7902 | (bfd *templ, | |
7903 | bfd_vma ehdr_vma, | |
7904 | bfd_vma *loadbasep, | |
f075ee0c | 7905 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
7906 | { |
7907 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
7908 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
7909 | } | |
4c45e5c9 JJ |
7910 | \f |
7911 | long | |
c9727e01 AM |
7912 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
7913 | long symcount ATTRIBUTE_UNUSED, | |
7914 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 7915 | long dynsymcount, |
c9727e01 AM |
7916 | asymbol **dynsyms, |
7917 | asymbol **ret) | |
4c45e5c9 JJ |
7918 | { |
7919 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7920 | asection *relplt; | |
7921 | asymbol *s; | |
7922 | const char *relplt_name; | |
7923 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
7924 | arelent *p; | |
7925 | long count, i, n; | |
7926 | size_t size; | |
7927 | Elf_Internal_Shdr *hdr; | |
7928 | char *names; | |
7929 | asection *plt; | |
7930 | ||
8615f3f2 AM |
7931 | *ret = NULL; |
7932 | ||
90e3cdf2 JJ |
7933 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
7934 | return 0; | |
7935 | ||
8615f3f2 AM |
7936 | if (dynsymcount <= 0) |
7937 | return 0; | |
7938 | ||
4c45e5c9 JJ |
7939 | if (!bed->plt_sym_val) |
7940 | return 0; | |
7941 | ||
7942 | relplt_name = bed->relplt_name; | |
7943 | if (relplt_name == NULL) | |
7944 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
7945 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
7946 | if (relplt == NULL) | |
7947 | return 0; | |
7948 | ||
7949 | hdr = &elf_section_data (relplt)->this_hdr; | |
7950 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
7951 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
7952 | return 0; | |
7953 | ||
7954 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
7955 | if (plt == NULL) | |
7956 | return 0; | |
7957 | ||
7958 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 7959 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
7960 | return -1; |
7961 | ||
eea6121a | 7962 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
7963 | size = count * sizeof (asymbol); |
7964 | p = relplt->relocation; | |
7965 | for (i = 0; i < count; i++, s++, p++) | |
7966 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
7967 | ||
7968 | s = *ret = bfd_malloc (size); | |
7969 | if (s == NULL) | |
7970 | return -1; | |
7971 | ||
7972 | names = (char *) (s + count); | |
7973 | p = relplt->relocation; | |
7974 | n = 0; | |
7975 | for (i = 0; i < count; i++, s++, p++) | |
7976 | { | |
7977 | size_t len; | |
7978 | bfd_vma addr; | |
7979 | ||
7980 | addr = bed->plt_sym_val (i, plt, p); | |
7981 | if (addr == (bfd_vma) -1) | |
7982 | continue; | |
7983 | ||
7984 | *s = **p->sym_ptr_ptr; | |
7985 | s->section = plt; | |
7986 | s->value = addr - plt->vma; | |
7987 | s->name = names; | |
7988 | len = strlen ((*p->sym_ptr_ptr)->name); | |
7989 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
7990 | names += len; | |
7991 | memcpy (names, "@plt", sizeof ("@plt")); | |
7992 | names += sizeof ("@plt"); | |
7993 | ++n; | |
7994 | } | |
7995 | ||
7996 | return n; | |
7997 | } | |
3d7f7666 L |
7998 | |
7999 | /* Sort symbol by binding and section. We want to put definitions | |
8000 | sorted by section at the beginning. */ | |
8001 | ||
8002 | static int | |
8003 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8004 | { | |
8005 | const Elf_Internal_Sym *s1; | |
8006 | const Elf_Internal_Sym *s2; | |
8007 | int shndx; | |
8008 | ||
8009 | /* Make sure that undefined symbols are at the end. */ | |
8010 | s1 = (const Elf_Internal_Sym *) arg1; | |
8011 | if (s1->st_shndx == SHN_UNDEF) | |
8012 | return 1; | |
8013 | s2 = (const Elf_Internal_Sym *) arg2; | |
8014 | if (s2->st_shndx == SHN_UNDEF) | |
8015 | return -1; | |
8016 | ||
8017 | /* Sorted by section index. */ | |
8018 | shndx = s1->st_shndx - s2->st_shndx; | |
8019 | if (shndx != 0) | |
8020 | return shndx; | |
8021 | ||
8022 | /* Sorted by binding. */ | |
8023 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8024 | } | |
8025 | ||
8026 | struct elf_symbol | |
8027 | { | |
8028 | Elf_Internal_Sym *sym; | |
8029 | const char *name; | |
8030 | }; | |
8031 | ||
8032 | static int | |
8033 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8034 | { | |
8035 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8036 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8037 | return strcmp (s1->name, s2->name); | |
8038 | } | |
8039 | ||
8040 | /* Check if 2 sections define the same set of local and global | |
8041 | symbols. */ | |
8042 | ||
8043 | bfd_boolean | |
8044 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8045 | { | |
8046 | bfd *bfd1, *bfd2; | |
8047 | const struct elf_backend_data *bed1, *bed2; | |
8048 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8049 | bfd_size_type symcount1, symcount2; | |
8050 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8051 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8052 | Elf_Internal_Sym *isymend; | |
8053 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8054 | bfd_size_type count1, count2, i; | |
8055 | int shndx1, shndx2; | |
8056 | bfd_boolean result; | |
8057 | ||
8058 | bfd1 = sec1->owner; | |
8059 | bfd2 = sec2->owner; | |
8060 | ||
8061 | /* If both are .gnu.linkonce sections, they have to have the same | |
8062 | section name. */ | |
8063 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8064 | sizeof ".gnu.linkonce" - 1) == 0 | |
8065 | && strncmp (sec2->name, ".gnu.linkonce", | |
8066 | sizeof ".gnu.linkonce" - 1) == 0) | |
8067 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8068 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8069 | ||
8070 | /* Both sections have to be in ELF. */ | |
8071 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8072 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8073 | return FALSE; | |
8074 | ||
8075 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8076 | return FALSE; | |
8077 | ||
8078 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8079 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8080 | { | |
8081 | /* If both are members of section groups, they have to have the | |
8082 | same group name. */ | |
8083 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8084 | return FALSE; | |
8085 | } | |
8086 | ||
8087 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8088 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8089 | if (shndx1 == -1 || shndx2 == -1) | |
8090 | return FALSE; | |
8091 | ||
8092 | bed1 = get_elf_backend_data (bfd1); | |
8093 | bed2 = get_elf_backend_data (bfd2); | |
8094 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8095 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8096 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8097 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8098 | ||
8099 | if (symcount1 == 0 || symcount2 == 0) | |
8100 | return FALSE; | |
8101 | ||
8102 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8103 | NULL, NULL, NULL); | |
8104 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8105 | NULL, NULL, NULL); | |
8106 | ||
8107 | result = FALSE; | |
8108 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8109 | goto done; | |
8110 | ||
8111 | /* Sort symbols by binding and section. Global definitions are at | |
8112 | the beginning. */ | |
8113 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8114 | elf_sort_elf_symbol); | |
8115 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8116 | elf_sort_elf_symbol); | |
8117 | ||
8118 | /* Count definitions in the section. */ | |
8119 | count1 = 0; | |
8120 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8121 | isym < isymend; isym++) | |
8122 | { | |
8123 | if (isym->st_shndx == (unsigned int) shndx1) | |
8124 | { | |
8125 | if (count1 == 0) | |
8126 | isymstart1 = isym; | |
8127 | count1++; | |
8128 | } | |
8129 | ||
8130 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8131 | break; | |
8132 | } | |
8133 | ||
8134 | count2 = 0; | |
8135 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8136 | isym < isymend; isym++) | |
8137 | { | |
8138 | if (isym->st_shndx == (unsigned int) shndx2) | |
8139 | { | |
8140 | if (count2 == 0) | |
8141 | isymstart2 = isym; | |
8142 | count2++; | |
8143 | } | |
8144 | ||
8145 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8146 | break; | |
8147 | } | |
8148 | ||
8149 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8150 | goto done; | |
8151 | ||
8152 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8153 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8154 | ||
8155 | if (symtable1 == NULL || symtable2 == NULL) | |
8156 | goto done; | |
8157 | ||
8158 | symp = symtable1; | |
8159 | for (isym = isymstart1, isymend = isym + count1; | |
8160 | isym < isymend; isym++) | |
8161 | { | |
8162 | symp->sym = isym; | |
8163 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8164 | hdr1->sh_link, | |
8165 | isym->st_name); | |
8166 | symp++; | |
8167 | } | |
8168 | ||
8169 | symp = symtable2; | |
8170 | for (isym = isymstart2, isymend = isym + count1; | |
8171 | isym < isymend; isym++) | |
8172 | { | |
8173 | symp->sym = isym; | |
8174 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8175 | hdr2->sh_link, | |
8176 | isym->st_name); | |
8177 | symp++; | |
8178 | } | |
8179 | ||
8180 | /* Sort symbol by name. */ | |
8181 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8182 | elf_sym_name_compare); | |
8183 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8184 | elf_sym_name_compare); | |
8185 | ||
8186 | for (i = 0; i < count1; i++) | |
8187 | /* Two symbols must have the same binding, type and name. */ | |
8188 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8189 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8190 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8191 | goto done; | |
8192 | ||
8193 | result = TRUE; | |
8194 | ||
8195 | done: | |
8196 | if (symtable1) | |
8197 | free (symtable1); | |
8198 | if (symtable2) | |
8199 | free (symtable2); | |
8200 | if (isymbuf1) | |
8201 | free (isymbuf1); | |
8202 | if (isymbuf2) | |
8203 | free (isymbuf2); | |
8204 | ||
8205 | return result; | |
8206 | } |