Commit | Line | Data |
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252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
8615f3f2 | 4 | 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
252b5132 | 5 | |
5e8d7549 | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5e8d7549 NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
5e8d7549 NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5e8d7549 | 18 | You should have received a copy of the GNU General Public License |
b34976b6 | 19 | along with this program; if not, write to the Free Software |
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, | |
26c61ae5 L |
410 | Elf_Internal_Sym *isym, |
411 | asection *sym_sec) | |
5cab59f6 | 412 | { |
26c61ae5 | 413 | const char *name; |
5cab59f6 | 414 | unsigned int iname = isym->st_name; |
be8dd2ca | 415 | unsigned int shindex = symtab_hdr->sh_link; |
26c61ae5 | 416 | |
138f35cc JJ |
417 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION |
418 | /* Check for a bogus st_shndx to avoid crashing. */ | |
419 | && isym->st_shndx < elf_numsections (abfd) | |
420 | && !(isym->st_shndx >= SHN_LORESERVE && isym->st_shndx <= SHN_HIRESERVE)) | |
5cab59f6 AM |
421 | { |
422 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
423 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
424 | } | |
425 | ||
26c61ae5 L |
426 | name = bfd_elf_string_from_elf_section (abfd, shindex, iname); |
427 | if (name == NULL) | |
428 | name = "(null)"; | |
429 | else if (sym_sec && *name == '\0') | |
430 | name = bfd_section_name (abfd, sym_sec); | |
431 | ||
432 | return name; | |
5cab59f6 AM |
433 | } |
434 | ||
dbb410c3 AM |
435 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
436 | sections. The first element is the flags, the rest are section | |
437 | pointers. */ | |
438 | ||
439 | typedef union elf_internal_group { | |
440 | Elf_Internal_Shdr *shdr; | |
441 | unsigned int flags; | |
442 | } Elf_Internal_Group; | |
443 | ||
b885599b AM |
444 | /* Return the name of the group signature symbol. Why isn't the |
445 | signature just a string? */ | |
446 | ||
447 | static const char * | |
217aa764 | 448 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 449 | { |
9dce4196 | 450 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
451 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
452 | Elf_External_Sym_Shndx eshndx; | |
453 | Elf_Internal_Sym isym; | |
b885599b AM |
454 | |
455 | /* First we need to ensure the symbol table is available. */ | |
456 | if (! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
457 | return NULL; | |
458 | ||
9dce4196 AM |
459 | /* Go read the symbol. */ |
460 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
461 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
462 | &isym, esym, &eshndx) == NULL) | |
b885599b | 463 | return NULL; |
9dce4196 | 464 | |
26c61ae5 | 465 | return bfd_elf_sym_name (abfd, hdr, &isym, NULL); |
b885599b AM |
466 | } |
467 | ||
dbb410c3 AM |
468 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
469 | ||
b34976b6 | 470 | static bfd_boolean |
217aa764 | 471 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
472 | { |
473 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
474 | ||
475 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
476 | is set to -1 if there are no SHT_GROUP sections. */ | |
477 | if (num_group == 0) | |
478 | { | |
479 | unsigned int i, shnum; | |
480 | ||
481 | /* First count the number of groups. If we have a SHT_GROUP | |
482 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 483 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
484 | num_group = 0; |
485 | for (i = 0; i < shnum; i++) | |
486 | { | |
487 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
488 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
489 | num_group += 1; | |
490 | } | |
491 | ||
492 | if (num_group == 0) | |
20dbb49d L |
493 | { |
494 | num_group = (unsigned) -1; | |
495 | elf_tdata (abfd)->num_group = num_group; | |
496 | } | |
497 | else | |
dbb410c3 AM |
498 | { |
499 | /* We keep a list of elf section headers for group sections, | |
500 | so we can find them quickly. */ | |
20dbb49d L |
501 | bfd_size_type amt; |
502 | ||
503 | elf_tdata (abfd)->num_group = num_group; | |
504 | amt = num_group * sizeof (Elf_Internal_Shdr *); | |
dbb410c3 AM |
505 | elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt); |
506 | if (elf_tdata (abfd)->group_sect_ptr == NULL) | |
b34976b6 | 507 | return FALSE; |
dbb410c3 AM |
508 | |
509 | num_group = 0; | |
510 | for (i = 0; i < shnum; i++) | |
511 | { | |
512 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
513 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
514 | { | |
973ffd63 | 515 | unsigned char *src; |
dbb410c3 AM |
516 | Elf_Internal_Group *dest; |
517 | ||
518 | /* Add to list of sections. */ | |
519 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
520 | num_group += 1; | |
521 | ||
522 | /* Read the raw contents. */ | |
523 | BFD_ASSERT (sizeof (*dest) >= 4); | |
524 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
525 | shdr->contents = bfd_alloc (abfd, amt); | |
526 | if (shdr->contents == NULL | |
527 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
528 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
529 | != shdr->sh_size)) | |
b34976b6 | 530 | return FALSE; |
dbb410c3 AM |
531 | |
532 | /* Translate raw contents, a flag word followed by an | |
533 | array of elf section indices all in target byte order, | |
534 | to the flag word followed by an array of elf section | |
535 | pointers. */ | |
536 | src = shdr->contents + shdr->sh_size; | |
537 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
538 | while (1) | |
539 | { | |
540 | unsigned int idx; | |
541 | ||
542 | src -= 4; | |
543 | --dest; | |
544 | idx = H_GET_32 (abfd, src); | |
545 | if (src == shdr->contents) | |
546 | { | |
547 | dest->flags = idx; | |
b885599b AM |
548 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
549 | shdr->bfd_section->flags | |
550 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
551 | break; |
552 | } | |
553 | if (idx >= shnum) | |
554 | { | |
555 | ((*_bfd_error_handler) | |
d003868e | 556 | (_("%B: invalid SHT_GROUP entry"), abfd)); |
dbb410c3 AM |
557 | idx = 0; |
558 | } | |
559 | dest->shdr = elf_elfsections (abfd)[idx]; | |
560 | } | |
561 | } | |
562 | } | |
563 | } | |
564 | } | |
565 | ||
566 | if (num_group != (unsigned) -1) | |
567 | { | |
568 | unsigned int i; | |
569 | ||
570 | for (i = 0; i < num_group; i++) | |
571 | { | |
572 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
573 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
574 | unsigned int n_elt = shdr->sh_size / 4; | |
575 | ||
576 | /* Look through this group's sections to see if current | |
577 | section is a member. */ | |
578 | while (--n_elt != 0) | |
579 | if ((++idx)->shdr == hdr) | |
580 | { | |
e0e8c97f | 581 | asection *s = NULL; |
dbb410c3 AM |
582 | |
583 | /* We are a member of this group. Go looking through | |
584 | other members to see if any others are linked via | |
585 | next_in_group. */ | |
586 | idx = (Elf_Internal_Group *) shdr->contents; | |
587 | n_elt = shdr->sh_size / 4; | |
588 | while (--n_elt != 0) | |
589 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 590 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
591 | break; |
592 | if (n_elt != 0) | |
593 | { | |
dbb410c3 AM |
594 | /* Snarf the group name from other member, and |
595 | insert current section in circular list. */ | |
945906ff AM |
596 | elf_group_name (newsect) = elf_group_name (s); |
597 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
598 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
599 | } |
600 | else | |
601 | { | |
dbb410c3 AM |
602 | const char *gname; |
603 | ||
b885599b AM |
604 | gname = group_signature (abfd, shdr); |
605 | if (gname == NULL) | |
b34976b6 | 606 | return FALSE; |
945906ff | 607 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
608 | |
609 | /* Start a circular list with one element. */ | |
945906ff | 610 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 611 | } |
b885599b | 612 | |
9dce4196 AM |
613 | /* If the group section has been created, point to the |
614 | new member. */ | |
dbb410c3 | 615 | if (shdr->bfd_section != NULL) |
945906ff | 616 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 617 | |
dbb410c3 AM |
618 | i = num_group - 1; |
619 | break; | |
620 | } | |
621 | } | |
622 | } | |
623 | ||
945906ff | 624 | if (elf_group_name (newsect) == NULL) |
dbb410c3 | 625 | { |
d003868e AM |
626 | (*_bfd_error_handler) (_("%B: no group info for section %A"), |
627 | abfd, newsect); | |
dbb410c3 | 628 | } |
b34976b6 | 629 | return TRUE; |
dbb410c3 AM |
630 | } |
631 | ||
3d7f7666 L |
632 | bfd_boolean |
633 | _bfd_elf_setup_group_pointers (bfd *abfd) | |
634 | { | |
635 | unsigned int i; | |
636 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
637 | bfd_boolean result = TRUE; | |
638 | ||
639 | if (num_group == (unsigned) -1) | |
640 | return result; | |
641 | ||
642 | for (i = 0; i < num_group; i++) | |
643 | { | |
644 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
645 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
646 | unsigned int n_elt = shdr->sh_size / 4; | |
647 | ||
648 | while (--n_elt != 0) | |
649 | if ((++idx)->shdr->bfd_section) | |
650 | elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section; | |
651 | else if (idx->shdr->sh_type == SHT_RELA | |
652 | || idx->shdr->sh_type == SHT_REL) | |
653 | /* We won't include relocation sections in section groups in | |
654 | output object files. We adjust the group section size here | |
655 | so that relocatable link will work correctly when | |
656 | relocation sections are in section group in input object | |
657 | files. */ | |
658 | shdr->bfd_section->size -= 4; | |
659 | else | |
660 | { | |
661 | /* There are some unknown sections in the group. */ | |
662 | (*_bfd_error_handler) | |
d003868e AM |
663 | (_("%B: unknown [%d] section `%s' in group [%s]"), |
664 | abfd, | |
3d7f7666 | 665 | (unsigned int) idx->shdr->sh_type, |
1b3a8575 AM |
666 | bfd_elf_string_from_elf_section (abfd, |
667 | (elf_elfheader (abfd) | |
668 | ->e_shstrndx), | |
669 | idx->shdr->sh_name), | |
3d7f7666 L |
670 | shdr->bfd_section->name); |
671 | result = FALSE; | |
672 | } | |
673 | } | |
674 | return result; | |
675 | } | |
676 | ||
72adc230 AM |
677 | bfd_boolean |
678 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
679 | { | |
680 | return elf_next_in_group (sec) != NULL; | |
681 | } | |
682 | ||
252b5132 RH |
683 | /* Make a BFD section from an ELF section. We store a pointer to the |
684 | BFD section in the bfd_section field of the header. */ | |
685 | ||
b34976b6 | 686 | bfd_boolean |
217aa764 AM |
687 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
688 | Elf_Internal_Shdr *hdr, | |
6dc132d9 L |
689 | const char *name, |
690 | int shindex) | |
252b5132 RH |
691 | { |
692 | asection *newsect; | |
693 | flagword flags; | |
9c5bfbb7 | 694 | const struct elf_backend_data *bed; |
252b5132 RH |
695 | |
696 | if (hdr->bfd_section != NULL) | |
697 | { | |
698 | BFD_ASSERT (strcmp (name, | |
699 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 700 | return TRUE; |
252b5132 RH |
701 | } |
702 | ||
703 | newsect = bfd_make_section_anyway (abfd, name); | |
704 | if (newsect == NULL) | |
b34976b6 | 705 | return FALSE; |
252b5132 | 706 | |
1829f4b2 AM |
707 | hdr->bfd_section = newsect; |
708 | elf_section_data (newsect)->this_hdr = *hdr; | |
6dc132d9 | 709 | elf_section_data (newsect)->this_idx = shindex; |
1829f4b2 | 710 | |
2f89ff8d L |
711 | /* Always use the real type/flags. */ |
712 | elf_section_type (newsect) = hdr->sh_type; | |
713 | elf_section_flags (newsect) = hdr->sh_flags; | |
714 | ||
252b5132 RH |
715 | newsect->filepos = hdr->sh_offset; |
716 | ||
717 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
718 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
719 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 720 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 721 | return FALSE; |
252b5132 RH |
722 | |
723 | flags = SEC_NO_FLAGS; | |
724 | if (hdr->sh_type != SHT_NOBITS) | |
725 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 | 726 | if (hdr->sh_type == SHT_GROUP) |
b3096250 | 727 | flags |= SEC_GROUP | SEC_EXCLUDE; |
252b5132 RH |
728 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
729 | { | |
730 | flags |= SEC_ALLOC; | |
731 | if (hdr->sh_type != SHT_NOBITS) | |
732 | flags |= SEC_LOAD; | |
733 | } | |
734 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
735 | flags |= SEC_READONLY; | |
736 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
737 | flags |= SEC_CODE; | |
738 | else if ((flags & SEC_LOAD) != 0) | |
739 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
740 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
741 | { | |
742 | flags |= SEC_MERGE; | |
743 | newsect->entsize = hdr->sh_entsize; | |
744 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
745 | flags |= SEC_STRINGS; | |
746 | } | |
dbb410c3 AM |
747 | if (hdr->sh_flags & SHF_GROUP) |
748 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 749 | return FALSE; |
13ae64f3 JJ |
750 | if ((hdr->sh_flags & SHF_TLS) != 0) |
751 | flags |= SEC_THREAD_LOCAL; | |
252b5132 RH |
752 | |
753 | /* The debugging sections appear to be recognized only by name, not | |
754 | any sort of flag. */ | |
7a6cc5fb | 755 | { |
dbf48117 | 756 | static const char *debug_sec_names [] = |
7a6cc5fb NC |
757 | { |
758 | ".debug", | |
759 | ".gnu.linkonce.wi.", | |
760 | ".line", | |
761 | ".stab" | |
762 | }; | |
763 | int i; | |
764 | ||
e0e8c97f | 765 | for (i = ARRAY_SIZE (debug_sec_names); i--;) |
7a6cc5fb NC |
766 | if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0) |
767 | break; | |
768 | ||
769 | if (i >= 0) | |
770 | flags |= SEC_DEBUGGING; | |
771 | } | |
252b5132 RH |
772 | |
773 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
774 | only link a single copy of the section. This is used to support | |
775 | g++. g++ will emit each template expansion in its own section. | |
776 | The symbols will be defined as weak, so that multiple definitions | |
777 | are permitted. The GNU linker extension is to actually discard | |
778 | all but one of the sections. */ | |
b885599b AM |
779 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
780 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
781 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
782 | ||
fa152c49 JW |
783 | bed = get_elf_backend_data (abfd); |
784 | if (bed->elf_backend_section_flags) | |
785 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 786 | return FALSE; |
fa152c49 | 787 | |
252b5132 | 788 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 789 | return FALSE; |
252b5132 RH |
790 | |
791 | if ((flags & SEC_ALLOC) != 0) | |
792 | { | |
793 | Elf_Internal_Phdr *phdr; | |
794 | unsigned int i; | |
795 | ||
796 | /* Look through the phdrs to see if we need to adjust the lma. | |
797 | If all the p_paddr fields are zero, we ignore them, since | |
798 | some ELF linkers produce such output. */ | |
799 | phdr = elf_tdata (abfd)->phdr; | |
800 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
801 | { | |
802 | if (phdr->p_paddr != 0) | |
803 | break; | |
804 | } | |
805 | if (i < elf_elfheader (abfd)->e_phnum) | |
806 | { | |
807 | phdr = elf_tdata (abfd)->phdr; | |
808 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
809 | { | |
e0e8c97f NC |
810 | /* This section is part of this segment if its file |
811 | offset plus size lies within the segment's memory | |
812 | span and, if the section is loaded, the extent of the | |
47d9a591 | 813 | loaded data lies within the extent of the segment. |
bf36db18 NC |
814 | |
815 | Note - we used to check the p_paddr field as well, and | |
816 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 817 | though, as a perfectly valid initialised segment can |
bf36db18 | 818 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 819 | place special significance on the address 0 and |
bf36db18 NC |
820 | executables need to be able to have a segment which |
821 | covers this address. */ | |
252b5132 | 822 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
823 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
824 | && (hdr->sh_offset + hdr->sh_size | |
825 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 826 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
827 | || (hdr->sh_offset + hdr->sh_size |
828 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 829 | { |
dba143ef | 830 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
831 | newsect->lma = (phdr->p_paddr |
832 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
833 | else |
834 | /* We used to use the same adjustment for SEC_LOAD | |
835 | sections, but that doesn't work if the segment | |
836 | is packed with code from multiple VMAs. | |
837 | Instead we calculate the section LMA based on | |
838 | the segment LMA. It is assumed that the | |
839 | segment will contain sections with contiguous | |
840 | LMAs, even if the VMAs are not. */ | |
841 | newsect->lma = (phdr->p_paddr | |
842 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
843 | |
844 | /* With contiguous segments, we can't tell from file | |
845 | offsets whether a section with zero size should | |
846 | be placed at the end of one segment or the | |
847 | beginning of the next. Decide based on vaddr. */ | |
848 | if (hdr->sh_addr >= phdr->p_vaddr | |
849 | && (hdr->sh_addr + hdr->sh_size | |
850 | <= phdr->p_vaddr + phdr->p_memsz)) | |
851 | break; | |
252b5132 RH |
852 | } |
853 | } | |
854 | } | |
855 | } | |
856 | ||
b34976b6 | 857 | return TRUE; |
252b5132 RH |
858 | } |
859 | ||
860 | /* | |
861 | INTERNAL_FUNCTION | |
862 | bfd_elf_find_section | |
863 | ||
864 | SYNOPSIS | |
865 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
866 | ||
867 | DESCRIPTION | |
868 | Helper functions for GDB to locate the string tables. | |
869 | Since BFD hides string tables from callers, GDB needs to use an | |
870 | internal hook to find them. Sun's .stabstr, in particular, | |
871 | isn't even pointed to by the .stab section, so ordinary | |
872 | mechanisms wouldn't work to find it, even if we had some. | |
873 | */ | |
874 | ||
875 | struct elf_internal_shdr * | |
217aa764 | 876 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
877 | { |
878 | Elf_Internal_Shdr **i_shdrp; | |
879 | char *shstrtab; | |
880 | unsigned int max; | |
881 | unsigned int i; | |
882 | ||
883 | i_shdrp = elf_elfsections (abfd); | |
884 | if (i_shdrp != NULL) | |
885 | { | |
9ad5cbcf AM |
886 | shstrtab = bfd_elf_get_str_section (abfd, |
887 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
888 | if (shstrtab != NULL) |
889 | { | |
9ad5cbcf | 890 | max = elf_numsections (abfd); |
252b5132 RH |
891 | for (i = 1; i < max; i++) |
892 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
893 | return i_shdrp[i]; | |
894 | } | |
895 | } | |
896 | return 0; | |
897 | } | |
898 | ||
899 | const char *const bfd_elf_section_type_names[] = { | |
900 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
901 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
902 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
903 | }; | |
904 | ||
1049f94e | 905 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
906 | output, and the reloc is against an external symbol, and nothing |
907 | has given us any additional addend, the resulting reloc will also | |
908 | be against the same symbol. In such a case, we don't want to | |
909 | change anything about the way the reloc is handled, since it will | |
910 | all be done at final link time. Rather than put special case code | |
911 | into bfd_perform_relocation, all the reloc types use this howto | |
912 | function. It just short circuits the reloc if producing | |
1049f94e | 913 | relocatable output against an external symbol. */ |
252b5132 | 914 | |
252b5132 | 915 | bfd_reloc_status_type |
217aa764 AM |
916 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
917 | arelent *reloc_entry, | |
918 | asymbol *symbol, | |
919 | void *data ATTRIBUTE_UNUSED, | |
920 | asection *input_section, | |
921 | bfd *output_bfd, | |
922 | char **error_message ATTRIBUTE_UNUSED) | |
923 | { | |
924 | if (output_bfd != NULL | |
252b5132 RH |
925 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
926 | && (! reloc_entry->howto->partial_inplace | |
927 | || reloc_entry->addend == 0)) | |
928 | { | |
929 | reloc_entry->address += input_section->output_offset; | |
930 | return bfd_reloc_ok; | |
931 | } | |
932 | ||
933 | return bfd_reloc_continue; | |
934 | } | |
935 | \f | |
d3c456e9 JJ |
936 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
937 | ||
938 | static void | |
217aa764 AM |
939 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
940 | asection *sec) | |
d3c456e9 | 941 | { |
68bfbfcc AM |
942 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
943 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
944 | } |
945 | ||
8550eb6e JJ |
946 | /* Finish SHF_MERGE section merging. */ |
947 | ||
b34976b6 | 948 | bfd_boolean |
217aa764 | 949 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 950 | { |
57ceae94 AM |
951 | bfd *ibfd; |
952 | asection *sec; | |
953 | ||
0eddce27 | 954 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 955 | return FALSE; |
57ceae94 AM |
956 | |
957 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
958 | if ((ibfd->flags & DYNAMIC) == 0) | |
959 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
960 | if ((sec->flags & SEC_MERGE) != 0 | |
961 | && !bfd_is_abs_section (sec->output_section)) | |
962 | { | |
963 | struct bfd_elf_section_data *secdata; | |
964 | ||
965 | secdata = elf_section_data (sec); | |
966 | if (! _bfd_add_merge_section (abfd, | |
967 | &elf_hash_table (info)->merge_info, | |
968 | sec, &secdata->sec_info)) | |
969 | return FALSE; | |
970 | else if (secdata->sec_info) | |
971 | sec->sec_info_type = ELF_INFO_TYPE_MERGE; | |
972 | } | |
973 | ||
974 | if (elf_hash_table (info)->merge_info != NULL) | |
975 | _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info, | |
d3c456e9 | 976 | merge_sections_remove_hook); |
b34976b6 | 977 | return TRUE; |
8550eb6e | 978 | } |
2d653fc7 AM |
979 | |
980 | void | |
217aa764 | 981 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
982 | { |
983 | sec->output_section = bfd_abs_section_ptr; | |
984 | sec->output_offset = sec->vma; | |
0eddce27 | 985 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
986 | return; |
987 | ||
68bfbfcc | 988 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 989 | } |
8550eb6e | 990 | \f |
0ac4564e L |
991 | /* Copy the program header and other data from one object module to |
992 | another. */ | |
252b5132 | 993 | |
b34976b6 | 994 | bfd_boolean |
217aa764 | 995 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
996 | { |
997 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
998 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 999 | return TRUE; |
2d502050 L |
1000 | |
1001 | BFD_ASSERT (!elf_flags_init (obfd) | |
1002 | || (elf_elfheader (obfd)->e_flags | |
1003 | == elf_elfheader (ibfd)->e_flags)); | |
1004 | ||
0ac4564e | 1005 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 1006 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
1007 | elf_flags_init (obfd) = TRUE; |
1008 | return TRUE; | |
2d502050 L |
1009 | } |
1010 | ||
f0b79d91 L |
1011 | /* Print out the program headers. */ |
1012 | ||
b34976b6 | 1013 | bfd_boolean |
217aa764 | 1014 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 1015 | { |
217aa764 | 1016 | FILE *f = farg; |
252b5132 RH |
1017 | Elf_Internal_Phdr *p; |
1018 | asection *s; | |
1019 | bfd_byte *dynbuf = NULL; | |
1020 | ||
1021 | p = elf_tdata (abfd)->phdr; | |
1022 | if (p != NULL) | |
1023 | { | |
1024 | unsigned int i, c; | |
1025 | ||
1026 | fprintf (f, _("\nProgram Header:\n")); | |
1027 | c = elf_elfheader (abfd)->e_phnum; | |
1028 | for (i = 0; i < c; i++, p++) | |
1029 | { | |
dc810e39 | 1030 | const char *pt; |
252b5132 RH |
1031 | char buf[20]; |
1032 | ||
1033 | switch (p->p_type) | |
1034 | { | |
dc810e39 AM |
1035 | case PT_NULL: pt = "NULL"; break; |
1036 | case PT_LOAD: pt = "LOAD"; break; | |
1037 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
1038 | case PT_INTERP: pt = "INTERP"; break; | |
1039 | case PT_NOTE: pt = "NOTE"; break; | |
1040 | case PT_SHLIB: pt = "SHLIB"; break; | |
1041 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 1042 | case PT_TLS: pt = "TLS"; break; |
65765700 | 1043 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 1044 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 1045 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 1046 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 1047 | } |
dc810e39 | 1048 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 1049 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 1050 | fprintf (f, " vaddr 0x"); |
60b89a18 | 1051 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 1052 | fprintf (f, " paddr 0x"); |
60b89a18 | 1053 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
1054 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
1055 | fprintf (f, " filesz 0x"); | |
60b89a18 | 1056 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 1057 | fprintf (f, " memsz 0x"); |
60b89a18 | 1058 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
1059 | fprintf (f, " flags %c%c%c", |
1060 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
1061 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
1062 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
1063 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
1064 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
1065 | fprintf (f, "\n"); |
1066 | } | |
1067 | } | |
1068 | ||
1069 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1070 | if (s != NULL) | |
1071 | { | |
1072 | int elfsec; | |
dc810e39 | 1073 | unsigned long shlink; |
252b5132 RH |
1074 | bfd_byte *extdyn, *extdynend; |
1075 | size_t extdynsize; | |
217aa764 | 1076 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1077 | |
1078 | fprintf (f, _("\nDynamic Section:\n")); | |
1079 | ||
eea6121a | 1080 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1081 | goto error_return; |
1082 | ||
1083 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1084 | if (elfsec == -1) | |
1085 | goto error_return; | |
dc810e39 | 1086 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1087 | |
1088 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1089 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1090 | ||
1091 | extdyn = dynbuf; | |
eea6121a | 1092 | extdynend = extdyn + s->size; |
252b5132 RH |
1093 | for (; extdyn < extdynend; extdyn += extdynsize) |
1094 | { | |
1095 | Elf_Internal_Dyn dyn; | |
1096 | const char *name; | |
1097 | char ab[20]; | |
b34976b6 | 1098 | bfd_boolean stringp; |
252b5132 | 1099 | |
217aa764 | 1100 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1101 | |
1102 | if (dyn.d_tag == DT_NULL) | |
1103 | break; | |
1104 | ||
b34976b6 | 1105 | stringp = FALSE; |
252b5132 RH |
1106 | switch (dyn.d_tag) |
1107 | { | |
1108 | default: | |
1109 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1110 | name = ab; | |
1111 | break; | |
1112 | ||
b34976b6 | 1113 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1114 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1115 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1116 | case DT_HASH: name = "HASH"; break; | |
1117 | case DT_STRTAB: name = "STRTAB"; break; | |
1118 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1119 | case DT_RELA: name = "RELA"; break; | |
1120 | case DT_RELASZ: name = "RELASZ"; break; | |
1121 | case DT_RELAENT: name = "RELAENT"; break; | |
1122 | case DT_STRSZ: name = "STRSZ"; break; | |
1123 | case DT_SYMENT: name = "SYMENT"; break; | |
1124 | case DT_INIT: name = "INIT"; break; | |
1125 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1126 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1127 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1128 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1129 | case DT_REL: name = "REL"; break; | |
1130 | case DT_RELSZ: name = "RELSZ"; break; | |
1131 | case DT_RELENT: name = "RELENT"; break; | |
1132 | case DT_PLTREL: name = "PLTREL"; break; | |
1133 | case DT_DEBUG: name = "DEBUG"; break; | |
1134 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1135 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1136 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1137 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1138 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1139 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1140 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1141 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1142 | case DT_FLAGS: name = "FLAGS"; break; |
1143 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1144 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1145 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1146 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1147 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1148 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1149 | case DT_FEATURE: name = "FEATURE"; break; | |
1150 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1151 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1152 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1153 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1154 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1155 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1156 | case DT_PLTPAD: name = "PLTPAD"; break; |
1157 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1158 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1159 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1160 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1161 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1162 | case DT_VERSYM: name = "VERSYM"; break; |
1163 | case DT_VERDEF: name = "VERDEF"; break; | |
1164 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1165 | case DT_VERNEED: name = "VERNEED"; break; | |
1166 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1167 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1168 | case DT_USED: name = "USED"; break; |
b34976b6 | 1169 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1170 | } |
1171 | ||
1172 | fprintf (f, " %-11s ", name); | |
1173 | if (! stringp) | |
1174 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1175 | else | |
1176 | { | |
1177 | const char *string; | |
dc810e39 | 1178 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1179 | |
dc810e39 | 1180 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1181 | if (string == NULL) |
1182 | goto error_return; | |
1183 | fprintf (f, "%s", string); | |
1184 | } | |
1185 | fprintf (f, "\n"); | |
1186 | } | |
1187 | ||
1188 | free (dynbuf); | |
1189 | dynbuf = NULL; | |
1190 | } | |
1191 | ||
1192 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1193 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1194 | { | |
fc0e6df6 | 1195 | if (! _bfd_elf_slurp_version_tables (abfd, FALSE)) |
b34976b6 | 1196 | return FALSE; |
252b5132 RH |
1197 | } |
1198 | ||
1199 | if (elf_dynverdef (abfd) != 0) | |
1200 | { | |
1201 | Elf_Internal_Verdef *t; | |
1202 | ||
1203 | fprintf (f, _("\nVersion definitions:\n")); | |
1204 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1205 | { | |
1206 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
1207 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
1208 | if (t->vd_auxptr->vda_nextptr != NULL) | |
1209 | { | |
1210 | Elf_Internal_Verdaux *a; | |
1211 | ||
1212 | fprintf (f, "\t"); | |
1213 | for (a = t->vd_auxptr->vda_nextptr; | |
1214 | a != NULL; | |
1215 | a = a->vda_nextptr) | |
1216 | fprintf (f, "%s ", a->vda_nodename); | |
1217 | fprintf (f, "\n"); | |
1218 | } | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | if (elf_dynverref (abfd) != 0) | |
1223 | { | |
1224 | Elf_Internal_Verneed *t; | |
1225 | ||
1226 | fprintf (f, _("\nVersion References:\n")); | |
1227 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1228 | { | |
1229 | Elf_Internal_Vernaux *a; | |
1230 | ||
1231 | fprintf (f, _(" required from %s:\n"), t->vn_filename); | |
1232 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1233 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
1234 | a->vna_flags, a->vna_other, a->vna_nodename); | |
1235 | } | |
1236 | } | |
1237 | ||
b34976b6 | 1238 | return TRUE; |
252b5132 RH |
1239 | |
1240 | error_return: | |
1241 | if (dynbuf != NULL) | |
1242 | free (dynbuf); | |
b34976b6 | 1243 | return FALSE; |
252b5132 RH |
1244 | } |
1245 | ||
1246 | /* Display ELF-specific fields of a symbol. */ | |
1247 | ||
1248 | void | |
217aa764 AM |
1249 | bfd_elf_print_symbol (bfd *abfd, |
1250 | void *filep, | |
1251 | asymbol *symbol, | |
1252 | bfd_print_symbol_type how) | |
252b5132 | 1253 | { |
217aa764 | 1254 | FILE *file = filep; |
252b5132 RH |
1255 | switch (how) |
1256 | { | |
1257 | case bfd_print_symbol_name: | |
1258 | fprintf (file, "%s", symbol->name); | |
1259 | break; | |
1260 | case bfd_print_symbol_more: | |
1261 | fprintf (file, "elf "); | |
60b89a18 | 1262 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1263 | fprintf (file, " %lx", (long) symbol->flags); |
1264 | break; | |
1265 | case bfd_print_symbol_all: | |
1266 | { | |
4e8a9624 AM |
1267 | const char *section_name; |
1268 | const char *name = NULL; | |
9c5bfbb7 | 1269 | const struct elf_backend_data *bed; |
7a13edea | 1270 | unsigned char st_other; |
dbb410c3 | 1271 | bfd_vma val; |
c044fabd | 1272 | |
252b5132 | 1273 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1274 | |
1275 | bed = get_elf_backend_data (abfd); | |
1276 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1277 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1278 | |
1279 | if (name == NULL) | |
1280 | { | |
7ee38065 | 1281 | name = symbol->name; |
217aa764 | 1282 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1283 | } |
1284 | ||
252b5132 RH |
1285 | fprintf (file, " %s\t", section_name); |
1286 | /* Print the "other" value for a symbol. For common symbols, | |
1287 | we've already printed the size; now print the alignment. | |
1288 | For other symbols, we have no specified alignment, and | |
1289 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1290 | if (bfd_is_com_section (symbol->section)) |
1291 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1292 | else | |
1293 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1294 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1295 | |
1296 | /* If we have version information, print it. */ | |
1297 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1298 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1299 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1300 | { | |
1301 | unsigned int vernum; | |
1302 | const char *version_string; | |
1303 | ||
1304 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1305 | ||
1306 | if (vernum == 0) | |
1307 | version_string = ""; | |
1308 | else if (vernum == 1) | |
1309 | version_string = "Base"; | |
1310 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1311 | version_string = | |
1312 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1313 | else | |
1314 | { | |
1315 | Elf_Internal_Verneed *t; | |
1316 | ||
1317 | version_string = ""; | |
1318 | for (t = elf_tdata (abfd)->verref; | |
1319 | t != NULL; | |
1320 | t = t->vn_nextref) | |
1321 | { | |
1322 | Elf_Internal_Vernaux *a; | |
1323 | ||
1324 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1325 | { | |
1326 | if (a->vna_other == vernum) | |
1327 | { | |
1328 | version_string = a->vna_nodename; | |
1329 | break; | |
1330 | } | |
1331 | } | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1336 | fprintf (file, " %-11s", version_string); | |
1337 | else | |
1338 | { | |
1339 | int i; | |
1340 | ||
1341 | fprintf (file, " (%s)", version_string); | |
1342 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1343 | putc (' ', file); | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1348 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1349 | |
7a13edea NC |
1350 | switch (st_other) |
1351 | { | |
1352 | case 0: break; | |
1353 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1354 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1355 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1356 | default: | |
1357 | /* Some other non-defined flags are also present, so print | |
1358 | everything hex. */ | |
1359 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1360 | } | |
252b5132 | 1361 | |
587ff49e | 1362 | fprintf (file, " %s", name); |
252b5132 RH |
1363 | } |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | \f | |
1368 | /* Create an entry in an ELF linker hash table. */ | |
1369 | ||
1370 | struct bfd_hash_entry * | |
217aa764 AM |
1371 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1372 | struct bfd_hash_table *table, | |
1373 | const char *string) | |
252b5132 | 1374 | { |
252b5132 RH |
1375 | /* Allocate the structure if it has not already been allocated by a |
1376 | subclass. */ | |
51b64d56 AM |
1377 | if (entry == NULL) |
1378 | { | |
1379 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1380 | if (entry == NULL) | |
1381 | return entry; | |
1382 | } | |
252b5132 RH |
1383 | |
1384 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1385 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1386 | if (entry != NULL) | |
252b5132 | 1387 | { |
51b64d56 AM |
1388 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1389 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1390 | ||
252b5132 RH |
1391 | /* Set local fields. */ |
1392 | ret->indx = -1; | |
252b5132 | 1393 | ret->dynindx = -1; |
f6e332e6 AM |
1394 | ret->got = ret->plt = htab->init_refcount; |
1395 | memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry) | |
1396 | - offsetof (struct elf_link_hash_entry, size))); | |
252b5132 RH |
1397 | /* Assume that we have been called by a non-ELF symbol reader. |
1398 | This flag is then reset by the code which reads an ELF input | |
1399 | file. This ensures that a symbol created by a non-ELF symbol | |
1400 | reader will have the flag set correctly. */ | |
f5385ebf | 1401 | ret->non_elf = 1; |
252b5132 RH |
1402 | } |
1403 | ||
51b64d56 | 1404 | return entry; |
252b5132 RH |
1405 | } |
1406 | ||
2920b85c | 1407 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1408 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1409 | |
c61b8717 | 1410 | void |
9c5bfbb7 | 1411 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1412 | struct elf_link_hash_entry *dir, |
1413 | struct elf_link_hash_entry *ind) | |
2920b85c | 1414 | { |
3c3e9281 | 1415 | bfd_signed_vma tmp; |
b48fa14c | 1416 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1417 | |
2920b85c RH |
1418 | /* Copy down any references that we may have already seen to the |
1419 | symbol which just became indirect. */ | |
1420 | ||
f5385ebf AM |
1421 | dir->ref_dynamic |= ind->ref_dynamic; |
1422 | dir->ref_regular |= ind->ref_regular; | |
1423 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1424 | dir->non_got_ref |= ind->non_got_ref; | |
1425 | dir->needs_plt |= ind->needs_plt; | |
1426 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
2920b85c | 1427 | |
1e370bd2 | 1428 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1429 | return; |
1430 | ||
51b64d56 | 1431 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1432 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1433 | tmp = dir->got.refcount; |
b48fa14c | 1434 | if (tmp < lowest_valid) |
2920b85c | 1435 | { |
51b64d56 | 1436 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1437 | ind->got.refcount = tmp; |
2920b85c | 1438 | } |
3c3e9281 | 1439 | else |
b48fa14c | 1440 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1441 | |
3c3e9281 | 1442 | tmp = dir->plt.refcount; |
b48fa14c | 1443 | if (tmp < lowest_valid) |
2920b85c | 1444 | { |
51b64d56 | 1445 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1446 | ind->plt.refcount = tmp; |
2920b85c | 1447 | } |
3c3e9281 | 1448 | else |
b48fa14c | 1449 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1450 | |
1451 | if (dir->dynindx == -1) | |
1452 | { | |
1453 | dir->dynindx = ind->dynindx; | |
1454 | dir->dynstr_index = ind->dynstr_index; | |
1455 | ind->dynindx = -1; | |
1456 | ind->dynstr_index = 0; | |
1457 | } | |
3c3e9281 AM |
1458 | else |
1459 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1460 | } |
1461 | ||
c61b8717 | 1462 | void |
217aa764 AM |
1463 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1464 | struct elf_link_hash_entry *h, | |
1465 | bfd_boolean force_local) | |
2920b85c | 1466 | { |
5cab59f6 | 1467 | h->plt = elf_hash_table (info)->init_offset; |
f5385ebf | 1468 | h->needs_plt = 0; |
e5094212 AM |
1469 | if (force_local) |
1470 | { | |
f5385ebf | 1471 | h->forced_local = 1; |
e5094212 AM |
1472 | if (h->dynindx != -1) |
1473 | { | |
1474 | h->dynindx = -1; | |
1475 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1476 | h->dynstr_index); | |
1477 | } | |
1478 | } | |
2920b85c RH |
1479 | } |
1480 | ||
252b5132 RH |
1481 | /* Initialize an ELF linker hash table. */ |
1482 | ||
b34976b6 | 1483 | bfd_boolean |
217aa764 AM |
1484 | _bfd_elf_link_hash_table_init |
1485 | (struct elf_link_hash_table *table, | |
1486 | bfd *abfd, | |
1487 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1488 | struct bfd_hash_table *, | |
1489 | const char *)) | |
252b5132 | 1490 | { |
b34976b6 | 1491 | bfd_boolean ret; |
8ea2e4bd | 1492 | |
b34976b6 | 1493 | table->dynamic_sections_created = FALSE; |
252b5132 | 1494 | table->dynobj = NULL; |
963f13ec AO |
1495 | /* Make sure can_refcount is extended to the width and signedness of |
1496 | init_refcount before we subtract one from it. */ | |
5cab59f6 AM |
1497 | table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; |
1498 | table->init_refcount.refcount -= 1; | |
1499 | table->init_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1500 | /* The first dynamic symbol is a dummy. */ |
1501 | table->dynsymcount = 1; | |
1502 | table->dynstr = NULL; | |
1503 | table->bucketcount = 0; | |
1504 | table->needed = NULL; | |
1505 | table->hgot = NULL; | |
f5fa8ca2 | 1506 | table->merge_info = NULL; |
3722b82f | 1507 | memset (&table->stab_info, 0, sizeof (table->stab_info)); |
73722af0 | 1508 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1509 | table->dynlocal = NULL; |
73722af0 | 1510 | table->runpath = NULL; |
e1918d23 AM |
1511 | table->tls_sec = NULL; |
1512 | table->tls_size = 0; | |
73722af0 | 1513 | table->loaded = NULL; |
67687978 | 1514 | table->is_relocatable_executable = FALSE; |
73722af0 AM |
1515 | |
1516 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1517 | table->root.type = bfd_link_elf_hash_table; |
1518 | ||
1519 | return ret; | |
252b5132 RH |
1520 | } |
1521 | ||
1522 | /* Create an ELF linker hash table. */ | |
1523 | ||
1524 | struct bfd_link_hash_table * | |
217aa764 | 1525 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1526 | { |
1527 | struct elf_link_hash_table *ret; | |
dc810e39 | 1528 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1529 | |
217aa764 AM |
1530 | ret = bfd_malloc (amt); |
1531 | if (ret == NULL) | |
252b5132 RH |
1532 | return NULL; |
1533 | ||
1534 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1535 | { | |
e2d34d7d | 1536 | free (ret); |
252b5132 RH |
1537 | return NULL; |
1538 | } | |
1539 | ||
1540 | return &ret->root; | |
1541 | } | |
1542 | ||
1543 | /* This is a hook for the ELF emulation code in the generic linker to | |
1544 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1545 | entry for a dynamic object. */ |
252b5132 RH |
1546 | |
1547 | void | |
217aa764 | 1548 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1549 | { |
1550 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1551 | && bfd_get_format (abfd) == bfd_object) | |
1552 | elf_dt_name (abfd) = name; | |
1553 | } | |
1554 | ||
e56f61be L |
1555 | int |
1556 | bfd_elf_get_dyn_lib_class (bfd *abfd) | |
1557 | { | |
1558 | int lib_class; | |
1559 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1560 | && bfd_get_format (abfd) == bfd_object) | |
1561 | lib_class = elf_dyn_lib_class (abfd); | |
1562 | else | |
1563 | lib_class = 0; | |
1564 | return lib_class; | |
1565 | } | |
1566 | ||
74816898 | 1567 | void |
4a43e768 | 1568 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1569 | { |
1570 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1571 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1572 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1573 | } |
1574 | ||
252b5132 RH |
1575 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1576 | the linker ELF emulation code. */ | |
1577 | ||
1578 | struct bfd_link_needed_list * | |
217aa764 AM |
1579 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1580 | struct bfd_link_info *info) | |
252b5132 | 1581 | { |
0eddce27 | 1582 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1583 | return NULL; |
1584 | return elf_hash_table (info)->needed; | |
1585 | } | |
1586 | ||
a963dc6a L |
1587 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1588 | hook for the linker ELF emulation code. */ | |
1589 | ||
1590 | struct bfd_link_needed_list * | |
217aa764 AM |
1591 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1592 | struct bfd_link_info *info) | |
a963dc6a | 1593 | { |
0eddce27 | 1594 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1595 | return NULL; |
1596 | return elf_hash_table (info)->runpath; | |
1597 | } | |
1598 | ||
252b5132 RH |
1599 | /* Get the name actually used for a dynamic object for a link. This |
1600 | is the SONAME entry if there is one. Otherwise, it is the string | |
1601 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1602 | ||
1603 | const char * | |
217aa764 | 1604 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1605 | { |
1606 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1607 | && bfd_get_format (abfd) == bfd_object) | |
1608 | return elf_dt_name (abfd); | |
1609 | return NULL; | |
1610 | } | |
1611 | ||
1612 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1613 | the ELF linker emulation code. */ | |
1614 | ||
b34976b6 | 1615 | bfd_boolean |
217aa764 AM |
1616 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1617 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1618 | { |
1619 | asection *s; | |
1620 | bfd_byte *dynbuf = NULL; | |
1621 | int elfsec; | |
dc810e39 | 1622 | unsigned long shlink; |
252b5132 RH |
1623 | bfd_byte *extdyn, *extdynend; |
1624 | size_t extdynsize; | |
217aa764 | 1625 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1626 | |
1627 | *pneeded = NULL; | |
1628 | ||
1629 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1630 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1631 | return TRUE; |
252b5132 RH |
1632 | |
1633 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
eea6121a | 1634 | if (s == NULL || s->size == 0) |
b34976b6 | 1635 | return TRUE; |
252b5132 | 1636 | |
eea6121a | 1637 | if (!bfd_malloc_and_get_section (abfd, s, &dynbuf)) |
252b5132 RH |
1638 | goto error_return; |
1639 | ||
1640 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1641 | if (elfsec == -1) | |
1642 | goto error_return; | |
1643 | ||
dc810e39 | 1644 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1645 | |
1646 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1647 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1648 | ||
1649 | extdyn = dynbuf; | |
eea6121a | 1650 | extdynend = extdyn + s->size; |
252b5132 RH |
1651 | for (; extdyn < extdynend; extdyn += extdynsize) |
1652 | { | |
1653 | Elf_Internal_Dyn dyn; | |
1654 | ||
217aa764 | 1655 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1656 | |
1657 | if (dyn.d_tag == DT_NULL) | |
1658 | break; | |
1659 | ||
1660 | if (dyn.d_tag == DT_NEEDED) | |
1661 | { | |
1662 | const char *string; | |
1663 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1664 | unsigned int tagv = dyn.d_un.d_val; |
1665 | bfd_size_type amt; | |
252b5132 | 1666 | |
dc810e39 | 1667 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1668 | if (string == NULL) |
1669 | goto error_return; | |
1670 | ||
dc810e39 | 1671 | amt = sizeof *l; |
217aa764 | 1672 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1673 | if (l == NULL) |
1674 | goto error_return; | |
1675 | ||
1676 | l->by = abfd; | |
1677 | l->name = string; | |
1678 | l->next = *pneeded; | |
1679 | *pneeded = l; | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | free (dynbuf); | |
1684 | ||
b34976b6 | 1685 | return TRUE; |
252b5132 RH |
1686 | |
1687 | error_return: | |
1688 | if (dynbuf != NULL) | |
1689 | free (dynbuf); | |
b34976b6 | 1690 | return FALSE; |
252b5132 RH |
1691 | } |
1692 | \f | |
1693 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1694 | ||
1695 | struct bfd_strtab_hash * | |
217aa764 | 1696 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1697 | { |
1698 | struct bfd_strtab_hash *ret; | |
1699 | ||
1700 | ret = _bfd_stringtab_init (); | |
1701 | if (ret != NULL) | |
1702 | { | |
1703 | bfd_size_type loc; | |
1704 | ||
b34976b6 | 1705 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1706 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1707 | if (loc == (bfd_size_type) -1) | |
1708 | { | |
1709 | _bfd_stringtab_free (ret); | |
1710 | ret = NULL; | |
1711 | } | |
1712 | } | |
1713 | return ret; | |
1714 | } | |
1715 | \f | |
1716 | /* ELF .o/exec file reading */ | |
1717 | ||
c044fabd | 1718 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1719 | |
b34976b6 | 1720 | bfd_boolean |
217aa764 | 1721 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1722 | { |
1723 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1724 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1725 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1726 | const char *name; |
252b5132 | 1727 | |
1b3a8575 AM |
1728 | name = bfd_elf_string_from_elf_section (abfd, |
1729 | elf_elfheader (abfd)->e_shstrndx, | |
1730 | hdr->sh_name); | |
252b5132 RH |
1731 | |
1732 | switch (hdr->sh_type) | |
1733 | { | |
1734 | case SHT_NULL: | |
1735 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1736 | return TRUE; |
252b5132 RH |
1737 | |
1738 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1739 | case SHT_NOBITS: /* .bss section. */ |
1740 | case SHT_HASH: /* .hash section. */ | |
1741 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1742 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1743 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1744 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
7f1204bb | 1745 | case SHT_GNU_LIBLIST: /* .gnu.liblist section. */ |
6dc132d9 | 1746 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1747 | |
797fc050 | 1748 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
6dc132d9 | 1749 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 1750 | return FALSE; |
797fc050 AM |
1751 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1752 | { | |
1753 | Elf_Internal_Shdr *dynsymhdr; | |
1754 | ||
1755 | /* The shared libraries distributed with hpux11 have a bogus | |
1756 | sh_link field for the ".dynamic" section. Find the | |
1757 | string table for the ".dynsym" section instead. */ | |
1758 | if (elf_dynsymtab (abfd) != 0) | |
1759 | { | |
1760 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1761 | hdr->sh_link = dynsymhdr->sh_link; | |
1762 | } | |
1763 | else | |
1764 | { | |
1765 | unsigned int i, num_sec; | |
1766 | ||
1767 | num_sec = elf_numsections (abfd); | |
1768 | for (i = 1; i < num_sec; i++) | |
1769 | { | |
1770 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1771 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1772 | { | |
1773 | hdr->sh_link = dynsymhdr->sh_link; | |
1774 | break; | |
1775 | } | |
1776 | } | |
1777 | } | |
1778 | } | |
1779 | break; | |
1780 | ||
252b5132 RH |
1781 | case SHT_SYMTAB: /* A symbol table */ |
1782 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1783 | return TRUE; |
252b5132 RH |
1784 | |
1785 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1786 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1787 | elf_onesymtab (abfd) = shindex; | |
1788 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1789 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1790 | abfd->flags |= HAS_SYMS; | |
1791 | ||
1792 | /* Sometimes a shared object will map in the symbol table. If | |
1793 | SHF_ALLOC is set, and this is a shared object, then we also | |
1794 | treat this section as a BFD section. We can not base the | |
1795 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1796 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1797 | linker. */ |
1798 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1799 | && (abfd->flags & DYNAMIC) != 0 | |
6dc132d9 L |
1800 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1801 | shindex)) | |
b34976b6 | 1802 | return FALSE; |
252b5132 | 1803 | |
1b3a8575 AM |
1804 | /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we |
1805 | can't read symbols without that section loaded as well. It | |
1806 | is most likely specified by the next section header. */ | |
1807 | if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex) | |
1808 | { | |
1809 | unsigned int i, num_sec; | |
1810 | ||
1811 | num_sec = elf_numsections (abfd); | |
1812 | for (i = shindex + 1; i < num_sec; i++) | |
1813 | { | |
1814 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1815 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1816 | && hdr2->sh_link == shindex) | |
1817 | break; | |
1818 | } | |
1819 | if (i == num_sec) | |
1820 | for (i = 1; i < shindex; i++) | |
1821 | { | |
1822 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1823 | if (hdr2->sh_type == SHT_SYMTAB_SHNDX | |
1824 | && hdr2->sh_link == shindex) | |
1825 | break; | |
1826 | } | |
1827 | if (i != shindex) | |
1828 | return bfd_section_from_shdr (abfd, i); | |
1829 | } | |
b34976b6 | 1830 | return TRUE; |
252b5132 RH |
1831 | |
1832 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1833 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1834 | return TRUE; |
252b5132 RH |
1835 | |
1836 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1837 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1838 | elf_dynsymtab (abfd) = shindex; | |
1839 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1840 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1841 | abfd->flags |= HAS_SYMS; | |
1842 | ||
1843 | /* Besides being a symbol table, we also treat this as a regular | |
1844 | section, so that objcopy can handle it. */ | |
6dc132d9 | 1845 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 | 1846 | |
9ad5cbcf AM |
1847 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1848 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1849 | return TRUE; |
9ad5cbcf | 1850 | |
1b3a8575 | 1851 | BFD_ASSERT (elf_symtab_shndx (abfd) == 0); |
9ad5cbcf AM |
1852 | elf_symtab_shndx (abfd) = shindex; |
1853 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1854 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1855 | return TRUE; |
9ad5cbcf | 1856 | |
252b5132 RH |
1857 | case SHT_STRTAB: /* A string table */ |
1858 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1859 | return TRUE; |
252b5132 RH |
1860 | if (ehdr->e_shstrndx == shindex) |
1861 | { | |
1862 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1863 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1864 | return TRUE; |
252b5132 | 1865 | } |
1b3a8575 AM |
1866 | if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex) |
1867 | { | |
1868 | symtab_strtab: | |
1869 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1870 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr; | |
1871 | return TRUE; | |
1872 | } | |
1873 | if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex) | |
1874 | { | |
1875 | dynsymtab_strtab: | |
1876 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1877 | hdr = &elf_tdata (abfd)->dynstrtab_hdr; | |
1878 | elf_elfsections (abfd)[shindex] = hdr; | |
1879 | /* We also treat this as a regular section, so that objcopy | |
1880 | can handle it. */ | |
6dc132d9 L |
1881 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1882 | shindex); | |
1b3a8575 | 1883 | } |
252b5132 | 1884 | |
1b3a8575 AM |
1885 | /* If the string table isn't one of the above, then treat it as a |
1886 | regular section. We need to scan all the headers to be sure, | |
1887 | just in case this strtab section appeared before the above. */ | |
1888 | if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0) | |
1889 | { | |
1890 | unsigned int i, num_sec; | |
252b5132 | 1891 | |
1b3a8575 AM |
1892 | num_sec = elf_numsections (abfd); |
1893 | for (i = 1; i < num_sec; i++) | |
1894 | { | |
1895 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1896 | if (hdr2->sh_link == shindex) | |
1897 | { | |
1898 | if (! bfd_section_from_shdr (abfd, i)) | |
1899 | return FALSE; | |
1900 | if (elf_onesymtab (abfd) == i) | |
1901 | goto symtab_strtab; | |
1902 | if (elf_dynsymtab (abfd) == i) | |
1903 | goto dynsymtab_strtab; | |
1904 | } | |
1905 | } | |
1906 | } | |
6dc132d9 | 1907 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
1908 | |
1909 | case SHT_REL: | |
1910 | case SHT_RELA: | |
1911 | /* *These* do a lot of work -- but build no sections! */ | |
1912 | { | |
1913 | asection *target_sect; | |
1914 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1915 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1916 | |
03ae5f59 | 1917 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1918 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1919 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1920 | { |
1921 | ((*_bfd_error_handler) | |
d003868e AM |
1922 | (_("%B: invalid link %lu for reloc section %s (index %u)"), |
1923 | abfd, hdr->sh_link, name, shindex)); | |
6dc132d9 L |
1924 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1925 | shindex); | |
03ae5f59 ILT |
1926 | } |
1927 | ||
252b5132 RH |
1928 | /* For some incomprehensible reason Oracle distributes |
1929 | libraries for Solaris in which some of the objects have | |
1930 | bogus sh_link fields. It would be nice if we could just | |
1931 | reject them, but, unfortunately, some people need to use | |
1932 | them. We scan through the section headers; if we find only | |
1933 | one suitable symbol table, we clobber the sh_link to point | |
1934 | to it. I hope this doesn't break anything. */ | |
1935 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1936 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1937 | { | |
9ad5cbcf | 1938 | unsigned int scan; |
252b5132 RH |
1939 | int found; |
1940 | ||
1941 | found = 0; | |
9ad5cbcf | 1942 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1943 | { |
1944 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1945 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1946 | { | |
1947 | if (found != 0) | |
1948 | { | |
1949 | found = 0; | |
1950 | break; | |
1951 | } | |
1952 | found = scan; | |
1953 | } | |
1954 | } | |
1955 | if (found != 0) | |
1956 | hdr->sh_link = found; | |
1957 | } | |
1958 | ||
1959 | /* Get the symbol table. */ | |
1b3a8575 AM |
1960 | if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1961 | || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM) | |
252b5132 | 1962 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) |
b34976b6 | 1963 | return FALSE; |
252b5132 RH |
1964 | |
1965 | /* If this reloc section does not use the main symbol table we | |
1966 | don't treat it as a reloc section. BFD can't adequately | |
1967 | represent such a section, so at least for now, we don't | |
c044fabd | 1968 | try. We just present it as a normal section. We also |
60bcf0fa | 1969 | can't use it as a reloc section if it points to the null |
c044fabd | 1970 | section. */ |
60bcf0fa | 1971 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
6dc132d9 L |
1972 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, |
1973 | shindex); | |
252b5132 RH |
1974 | |
1975 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1976 | return FALSE; |
252b5132 RH |
1977 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1978 | if (target_sect == NULL) | |
b34976b6 | 1979 | return FALSE; |
252b5132 RH |
1980 | |
1981 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1982 | || target_sect->reloc_count == 0) | |
1983 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1984 | else | |
1985 | { | |
dc810e39 | 1986 | bfd_size_type amt; |
252b5132 | 1987 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1988 | amt = sizeof (*hdr2); |
217aa764 | 1989 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
1990 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1991 | } | |
1992 | *hdr2 = *hdr; | |
1993 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1994 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1995 | target_sect->flags |= SEC_RELOC; |
1996 | target_sect->relocation = NULL; | |
1997 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1998 | /* In the section to which the relocations apply, mark whether |
1999 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 2000 | if (hdr->sh_size != 0) |
68bfbfcc | 2001 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 2002 | abfd->flags |= HAS_RELOC; |
b34976b6 | 2003 | return TRUE; |
252b5132 RH |
2004 | } |
2005 | break; | |
2006 | ||
2007 | case SHT_GNU_verdef: | |
2008 | elf_dynverdef (abfd) = shindex; | |
2009 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
6dc132d9 | 2010 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2011 | break; |
2012 | ||
2013 | case SHT_GNU_versym: | |
2014 | elf_dynversym (abfd) = shindex; | |
2015 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
6dc132d9 | 2016 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2017 | break; |
2018 | ||
2019 | case SHT_GNU_verneed: | |
2020 | elf_dynverref (abfd) = shindex; | |
2021 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
6dc132d9 | 2022 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); |
252b5132 RH |
2023 | break; |
2024 | ||
2025 | case SHT_SHLIB: | |
b34976b6 | 2026 | return TRUE; |
252b5132 | 2027 | |
dbb410c3 | 2028 | case SHT_GROUP: |
b885599b AM |
2029 | /* We need a BFD section for objcopy and relocatable linking, |
2030 | and it's handy to have the signature available as the section | |
2031 | name. */ | |
2032 | name = group_signature (abfd, hdr); | |
2033 | if (name == NULL) | |
b34976b6 | 2034 | return FALSE; |
6dc132d9 | 2035 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2036 | return FALSE; |
dbb410c3 AM |
2037 | if (hdr->contents != NULL) |
2038 | { | |
2039 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
2040 | unsigned int n_elt = hdr->sh_size / 4; | |
2041 | asection *s; | |
2042 | ||
b885599b AM |
2043 | if (idx->flags & GRP_COMDAT) |
2044 | hdr->bfd_section->flags | |
2045 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
2046 | ||
45c5e9ed L |
2047 | /* We try to keep the same section order as it comes in. */ |
2048 | idx += n_elt; | |
dbb410c3 | 2049 | while (--n_elt != 0) |
45c5e9ed | 2050 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 2051 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 2052 | { |
945906ff | 2053 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
2054 | break; |
2055 | } | |
2056 | } | |
2057 | break; | |
2058 | ||
252b5132 RH |
2059 | default: |
2060 | /* Check for any processor-specific section types. */ | |
6dc132d9 L |
2061 | return bed->elf_backend_section_from_shdr (abfd, hdr, name, |
2062 | shindex); | |
252b5132 RH |
2063 | } |
2064 | ||
b34976b6 | 2065 | return TRUE; |
252b5132 RH |
2066 | } |
2067 | ||
ec338859 AM |
2068 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
2069 | Return SEC for sections that have no elf section, and NULL on error. */ | |
2070 | ||
2071 | asection * | |
217aa764 AM |
2072 | bfd_section_from_r_symndx (bfd *abfd, |
2073 | struct sym_sec_cache *cache, | |
2074 | asection *sec, | |
2075 | unsigned long r_symndx) | |
ec338859 | 2076 | { |
ec338859 | 2077 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
2078 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
2079 | Elf_External_Sym_Shndx eshndx; | |
2080 | Elf_Internal_Sym isym; | |
ec338859 AM |
2081 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
2082 | ||
2083 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
2084 | return cache->sec[ent]; | |
2085 | ||
2086 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
2087 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
2088 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2089 | return NULL; |
9ad5cbcf | 2090 | |
ec338859 AM |
2091 | if (cache->abfd != abfd) |
2092 | { | |
2093 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2094 | cache->abfd = abfd; | |
2095 | } | |
2096 | cache->indx[ent] = r_symndx; | |
2097 | cache->sec[ent] = sec; | |
50bc7936 AM |
2098 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2099 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2100 | { |
2101 | asection *s; | |
6cdc0ccc | 2102 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2103 | if (s != NULL) |
2104 | cache->sec[ent] = s; | |
2105 | } | |
2106 | return cache->sec[ent]; | |
2107 | } | |
2108 | ||
252b5132 RH |
2109 | /* Given an ELF section number, retrieve the corresponding BFD |
2110 | section. */ | |
2111 | ||
2112 | asection * | |
217aa764 | 2113 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2114 | { |
9ad5cbcf | 2115 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2116 | return NULL; |
2117 | return elf_elfsections (abfd)[index]->bfd_section; | |
2118 | } | |
2119 | ||
2f89ff8d L |
2120 | static struct bfd_elf_special_section const special_sections[] = |
2121 | { | |
7dcb9820 | 2122 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
6723a9f4 | 2123 | { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
7dcb9820 AM |
2124 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, |
2125 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2126 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2127 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
2128 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2129 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2130 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2131 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2132 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
2133 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2134 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2135 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2136 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2137 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2138 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2139 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, | |
2140 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2141 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2142 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2143 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2144 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2145 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
2146 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2147 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2148 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2149 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2150 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2151 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2152 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
2153 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, | |
2154 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2155 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
45c5e9ed | 2156 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 AM |
2157 | { ".note", 5, -1, SHT_NOTE, 0 }, |
2158 | { ".rela", 5, -1, SHT_RELA, 0 }, | |
2159 | { ".rel", 4, -1, SHT_REL, 0 }, | |
2160 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
7f1204bb JJ |
2161 | { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC }, |
2162 | { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC }, | |
7dcb9820 | 2163 | { NULL, 0, 0, 0, 0 } |
2f89ff8d L |
2164 | }; |
2165 | ||
2166 | static const struct bfd_elf_special_section * | |
2167 | get_special_section (const char *name, | |
2168 | const struct bfd_elf_special_section *special_sections, | |
2169 | unsigned int rela) | |
2170 | { | |
2171 | int i; | |
7dcb9820 | 2172 | int len = strlen (name); |
2f89ff8d L |
2173 | |
2174 | for (i = 0; special_sections[i].prefix != NULL; i++) | |
7dcb9820 AM |
2175 | { |
2176 | int suffix_len; | |
2177 | int prefix_len = special_sections[i].prefix_length; | |
2178 | ||
2179 | if (len < prefix_len) | |
2180 | continue; | |
2181 | if (memcmp (name, special_sections[i].prefix, prefix_len) != 0) | |
2182 | continue; | |
2183 | ||
2184 | suffix_len = special_sections[i].suffix_length; | |
2185 | if (suffix_len <= 0) | |
2186 | { | |
2187 | if (name[prefix_len] != 0) | |
2188 | { | |
2189 | if (suffix_len == 0) | |
2190 | continue; | |
2191 | if (name[prefix_len] != '.' | |
2192 | && (suffix_len == -2 | |
2193 | || (rela && special_sections[i].type == SHT_REL))) | |
2194 | continue; | |
2195 | } | |
2196 | } | |
2197 | else | |
2198 | { | |
2199 | if (len < prefix_len + suffix_len) | |
2200 | continue; | |
2201 | if (memcmp (name + len - suffix_len, | |
2202 | special_sections[i].prefix + prefix_len, | |
2203 | suffix_len) != 0) | |
2204 | continue; | |
2205 | } | |
2f89ff8d | 2206 | return &special_sections[i]; |
7dcb9820 | 2207 | } |
2f89ff8d L |
2208 | |
2209 | return NULL; | |
2210 | } | |
2211 | ||
7dcb9820 AM |
2212 | const struct bfd_elf_special_section * |
2213 | _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) | |
2f89ff8d | 2214 | { |
9c5bfbb7 | 2215 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7dcb9820 | 2216 | const struct bfd_elf_special_section *ssect = NULL; |
2f89ff8d L |
2217 | |
2218 | /* See if this is one of the special sections. */ | |
2219 | if (name) | |
2220 | { | |
9c5bfbb7 | 2221 | unsigned int rela = bed->default_use_rela_p; |
2f89ff8d L |
2222 | |
2223 | if (bed->special_sections) | |
2224 | ssect = get_special_section (name, bed->special_sections, rela); | |
2225 | ||
2226 | if (! ssect) | |
2227 | ssect = get_special_section (name, special_sections, rela); | |
2f89ff8d L |
2228 | } |
2229 | ||
7dcb9820 | 2230 | return ssect; |
2f89ff8d L |
2231 | } |
2232 | ||
b34976b6 | 2233 | bfd_boolean |
217aa764 | 2234 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2235 | { |
2236 | struct bfd_elf_section_data *sdata; | |
7dcb9820 | 2237 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2238 | |
f0abc2a1 AM |
2239 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2240 | if (sdata == NULL) | |
2241 | { | |
217aa764 | 2242 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2243 | if (sdata == NULL) |
2244 | return FALSE; | |
217aa764 | 2245 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2246 | } |
bf572ba0 | 2247 | |
3cddba1e | 2248 | elf_section_type (sec) = SHT_NULL; |
7dcb9820 AM |
2249 | ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); |
2250 | if (ssect != NULL) | |
2f89ff8d | 2251 | { |
7dcb9820 AM |
2252 | elf_section_type (sec) = ssect->type; |
2253 | elf_section_flags (sec) = ssect->attr; | |
2f89ff8d L |
2254 | } |
2255 | ||
bf572ba0 | 2256 | /* Indicate whether or not this section should use RELA relocations. */ |
68bfbfcc | 2257 | sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; |
bf572ba0 | 2258 | |
b34976b6 | 2259 | return TRUE; |
252b5132 RH |
2260 | } |
2261 | ||
2262 | /* Create a new bfd section from an ELF program header. | |
2263 | ||
2264 | Since program segments have no names, we generate a synthetic name | |
2265 | of the form segment<NUM>, where NUM is generally the index in the | |
2266 | program header table. For segments that are split (see below) we | |
2267 | generate the names segment<NUM>a and segment<NUM>b. | |
2268 | ||
2269 | Note that some program segments may have a file size that is different than | |
2270 | (less than) the memory size. All this means is that at execution the | |
2271 | system must allocate the amount of memory specified by the memory size, | |
2272 | but only initialize it with the first "file size" bytes read from the | |
2273 | file. This would occur for example, with program segments consisting | |
2274 | of combined data+bss. | |
2275 | ||
2276 | To handle the above situation, this routine generates TWO bfd sections | |
2277 | for the single program segment. The first has the length specified by | |
2278 | the file size of the segment, and the second has the length specified | |
2279 | by the difference between the two sizes. In effect, the segment is split | |
2280 | into it's initialized and uninitialized parts. | |
2281 | ||
2282 | */ | |
2283 | ||
b34976b6 | 2284 | bfd_boolean |
217aa764 AM |
2285 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2286 | Elf_Internal_Phdr *hdr, | |
2287 | int index, | |
2288 | const char *typename) | |
252b5132 RH |
2289 | { |
2290 | asection *newsect; | |
2291 | char *name; | |
2292 | char namebuf[64]; | |
d4c88bbb | 2293 | size_t len; |
252b5132 RH |
2294 | int split; |
2295 | ||
2296 | split = ((hdr->p_memsz > 0) | |
2297 | && (hdr->p_filesz > 0) | |
2298 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2299 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2300 | len = strlen (namebuf) + 1; |
217aa764 | 2301 | name = bfd_alloc (abfd, len); |
252b5132 | 2302 | if (!name) |
b34976b6 | 2303 | return FALSE; |
d4c88bbb | 2304 | memcpy (name, namebuf, len); |
252b5132 RH |
2305 | newsect = bfd_make_section (abfd, name); |
2306 | if (newsect == NULL) | |
b34976b6 | 2307 | return FALSE; |
252b5132 RH |
2308 | newsect->vma = hdr->p_vaddr; |
2309 | newsect->lma = hdr->p_paddr; | |
eea6121a | 2310 | newsect->size = hdr->p_filesz; |
252b5132 RH |
2311 | newsect->filepos = hdr->p_offset; |
2312 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2313 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2314 | if (hdr->p_type == PT_LOAD) |
2315 | { | |
2316 | newsect->flags |= SEC_ALLOC; | |
2317 | newsect->flags |= SEC_LOAD; | |
2318 | if (hdr->p_flags & PF_X) | |
2319 | { | |
2320 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2321 | may be data. */ |
252b5132 RH |
2322 | newsect->flags |= SEC_CODE; |
2323 | } | |
2324 | } | |
2325 | if (!(hdr->p_flags & PF_W)) | |
2326 | { | |
2327 | newsect->flags |= SEC_READONLY; | |
2328 | } | |
2329 | ||
2330 | if (split) | |
2331 | { | |
27ac83bf | 2332 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2333 | len = strlen (namebuf) + 1; |
217aa764 | 2334 | name = bfd_alloc (abfd, len); |
252b5132 | 2335 | if (!name) |
b34976b6 | 2336 | return FALSE; |
d4c88bbb | 2337 | memcpy (name, namebuf, len); |
252b5132 RH |
2338 | newsect = bfd_make_section (abfd, name); |
2339 | if (newsect == NULL) | |
b34976b6 | 2340 | return FALSE; |
252b5132 RH |
2341 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2342 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
eea6121a | 2343 | newsect->size = hdr->p_memsz - hdr->p_filesz; |
252b5132 RH |
2344 | if (hdr->p_type == PT_LOAD) |
2345 | { | |
2346 | newsect->flags |= SEC_ALLOC; | |
2347 | if (hdr->p_flags & PF_X) | |
2348 | newsect->flags |= SEC_CODE; | |
2349 | } | |
2350 | if (!(hdr->p_flags & PF_W)) | |
2351 | newsect->flags |= SEC_READONLY; | |
2352 | } | |
2353 | ||
b34976b6 | 2354 | return TRUE; |
252b5132 RH |
2355 | } |
2356 | ||
b34976b6 | 2357 | bfd_boolean |
217aa764 | 2358 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2359 | { |
9c5bfbb7 | 2360 | const struct elf_backend_data *bed; |
20cfcaae NC |
2361 | |
2362 | switch (hdr->p_type) | |
2363 | { | |
2364 | case PT_NULL: | |
2365 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2366 | ||
2367 | case PT_LOAD: | |
2368 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2369 | ||
2370 | case PT_DYNAMIC: | |
2371 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2372 | ||
2373 | case PT_INTERP: | |
2374 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2375 | ||
2376 | case PT_NOTE: | |
2377 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2378 | return FALSE; |
217aa764 | 2379 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2380 | return FALSE; |
2381 | return TRUE; | |
20cfcaae NC |
2382 | |
2383 | case PT_SHLIB: | |
2384 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2385 | ||
2386 | case PT_PHDR: | |
2387 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2388 | ||
811072d8 RM |
2389 | case PT_GNU_EH_FRAME: |
2390 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2391 | "eh_frame_hdr"); | |
2392 | ||
9ee5e499 JJ |
2393 | case PT_GNU_STACK: |
2394 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2395 | ||
8c37241b JJ |
2396 | case PT_GNU_RELRO: |
2397 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2398 | ||
20cfcaae | 2399 | default: |
8c1acd09 | 2400 | /* Check for any processor-specific program segment types. */ |
20cfcaae | 2401 | bed = get_elf_backend_data (abfd); |
d27f5fa1 | 2402 | return bed->elf_backend_section_from_phdr (abfd, hdr, index, "proc"); |
20cfcaae NC |
2403 | } |
2404 | } | |
2405 | ||
23bc299b | 2406 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2407 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2408 | relocations; otherwise, we use REL relocations. */ |
2409 | ||
b34976b6 | 2410 | bfd_boolean |
217aa764 AM |
2411 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2412 | Elf_Internal_Shdr *rel_hdr, | |
2413 | asection *asect, | |
2414 | bfd_boolean use_rela_p) | |
23bc299b MM |
2415 | { |
2416 | char *name; | |
9c5bfbb7 | 2417 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2418 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2419 | |
dc810e39 | 2420 | name = bfd_alloc (abfd, amt); |
23bc299b | 2421 | if (name == NULL) |
b34976b6 | 2422 | return FALSE; |
23bc299b MM |
2423 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2424 | rel_hdr->sh_name = | |
2b0f7ef9 | 2425 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2426 | FALSE); |
23bc299b | 2427 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2428 | return FALSE; |
23bc299b MM |
2429 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2430 | rel_hdr->sh_entsize = (use_rela_p | |
2431 | ? bed->s->sizeof_rela | |
2432 | : bed->s->sizeof_rel); | |
45d6a902 | 2433 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2434 | rel_hdr->sh_flags = 0; |
2435 | rel_hdr->sh_addr = 0; | |
2436 | rel_hdr->sh_size = 0; | |
2437 | rel_hdr->sh_offset = 0; | |
2438 | ||
b34976b6 | 2439 | return TRUE; |
23bc299b MM |
2440 | } |
2441 | ||
252b5132 RH |
2442 | /* Set up an ELF internal section header for a section. */ |
2443 | ||
252b5132 | 2444 | static void |
217aa764 | 2445 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2446 | { |
9c5bfbb7 | 2447 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2448 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2449 | Elf_Internal_Shdr *this_hdr; |
2450 | ||
2451 | if (*failedptr) | |
2452 | { | |
2453 | /* We already failed; just get out of the bfd_map_over_sections | |
2454 | loop. */ | |
2455 | return; | |
2456 | } | |
2457 | ||
2458 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2459 | ||
e57b5356 AM |
2460 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2461 | asect->name, FALSE); | |
2462 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2463 | { |
b34976b6 | 2464 | *failedptr = TRUE; |
252b5132 RH |
2465 | return; |
2466 | } | |
2467 | ||
2468 | this_hdr->sh_flags = 0; | |
2469 | ||
2470 | if ((asect->flags & SEC_ALLOC) != 0 | |
2471 | || asect->user_set_vma) | |
2472 | this_hdr->sh_addr = asect->vma; | |
2473 | else | |
2474 | this_hdr->sh_addr = 0; | |
2475 | ||
2476 | this_hdr->sh_offset = 0; | |
eea6121a | 2477 | this_hdr->sh_size = asect->size; |
252b5132 RH |
2478 | this_hdr->sh_link = 0; |
2479 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2480 | /* The sh_entsize and sh_info fields may have been set already by | |
2481 | copy_private_section_data. */ | |
2482 | ||
2483 | this_hdr->bfd_section = asect; | |
2484 | this_hdr->contents = NULL; | |
2485 | ||
3cddba1e L |
2486 | /* If the section type is unspecified, we set it based on |
2487 | asect->flags. */ | |
2488 | if (this_hdr->sh_type == SHT_NULL) | |
2489 | { | |
45c5e9ed L |
2490 | if ((asect->flags & SEC_GROUP) != 0) |
2491 | { | |
2492 | /* We also need to mark SHF_GROUP here for relocatable | |
2493 | link. */ | |
2494 | struct bfd_link_order *l; | |
2495 | asection *elt; | |
2496 | ||
2497 | for (l = asect->link_order_head; l != NULL; l = l->next) | |
2498 | if (l->type == bfd_indirect_link_order | |
2499 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2500 | do | |
2501 | { | |
2502 | /* The name is not important. Anything will do. */ | |
2503 | elf_group_name (elt->output_section) = "G"; | |
2504 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2505 | ||
2506 | elt = elf_next_in_group (elt); | |
2507 | /* During a relocatable link, the lists are | |
2508 | circular. */ | |
2509 | } | |
2510 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2511 | ||
2512 | this_hdr->sh_type = SHT_GROUP; | |
2513 | } | |
2514 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2515 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2516 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2517 | this_hdr->sh_type = SHT_NOBITS; | |
2518 | else | |
2519 | this_hdr->sh_type = SHT_PROGBITS; | |
2520 | } | |
2521 | ||
2f89ff8d | 2522 | switch (this_hdr->sh_type) |
252b5132 | 2523 | { |
2f89ff8d | 2524 | default: |
2f89ff8d L |
2525 | break; |
2526 | ||
2527 | case SHT_STRTAB: | |
2528 | case SHT_INIT_ARRAY: | |
2529 | case SHT_FINI_ARRAY: | |
2530 | case SHT_PREINIT_ARRAY: | |
2531 | case SHT_NOTE: | |
2532 | case SHT_NOBITS: | |
2533 | case SHT_PROGBITS: | |
2534 | break; | |
2535 | ||
2536 | case SHT_HASH: | |
c7ac6ff8 | 2537 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2538 | break; |
5de3bf90 | 2539 | |
2f89ff8d | 2540 | case SHT_DYNSYM: |
252b5132 | 2541 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2542 | break; |
2543 | ||
2544 | case SHT_DYNAMIC: | |
252b5132 | 2545 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2546 | break; |
2547 | ||
2548 | case SHT_RELA: | |
2549 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2550 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2551 | break; | |
2552 | ||
2553 | case SHT_REL: | |
2554 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2555 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2556 | break; | |
2557 | ||
2558 | case SHT_GNU_versym: | |
252b5132 | 2559 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2560 | break; |
2561 | ||
2562 | case SHT_GNU_verdef: | |
252b5132 RH |
2563 | this_hdr->sh_entsize = 0; |
2564 | /* objcopy or strip will copy over sh_info, but may not set | |
2565 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2566 | zero. */ | |
2567 | if (this_hdr->sh_info == 0) | |
2568 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2569 | else | |
2570 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2571 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2572 | break; |
2573 | ||
2574 | case SHT_GNU_verneed: | |
252b5132 RH |
2575 | this_hdr->sh_entsize = 0; |
2576 | /* objcopy or strip will copy over sh_info, but may not set | |
2577 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2578 | zero. */ | |
2579 | if (this_hdr->sh_info == 0) | |
2580 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2581 | else | |
2582 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2583 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2584 | break; |
2585 | ||
2586 | case SHT_GROUP: | |
dbb410c3 | 2587 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2588 | break; |
dbb410c3 | 2589 | } |
252b5132 RH |
2590 | |
2591 | if ((asect->flags & SEC_ALLOC) != 0) | |
2592 | this_hdr->sh_flags |= SHF_ALLOC; | |
2593 | if ((asect->flags & SEC_READONLY) == 0) | |
2594 | this_hdr->sh_flags |= SHF_WRITE; | |
2595 | if ((asect->flags & SEC_CODE) != 0) | |
2596 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2597 | if ((asect->flags & SEC_MERGE) != 0) |
2598 | { | |
2599 | this_hdr->sh_flags |= SHF_MERGE; | |
2600 | this_hdr->sh_entsize = asect->entsize; | |
2601 | if ((asect->flags & SEC_STRINGS) != 0) | |
2602 | this_hdr->sh_flags |= SHF_STRINGS; | |
2603 | } | |
1126897b | 2604 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2605 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2606 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2607 | { |
2608 | this_hdr->sh_flags |= SHF_TLS; | |
eea6121a | 2609 | if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) |
704afa60 JJ |
2610 | { |
2611 | struct bfd_link_order *o; | |
b34976b6 | 2612 | |
704afa60 JJ |
2613 | this_hdr->sh_size = 0; |
2614 | for (o = asect->link_order_head; o != NULL; o = o->next) | |
2615 | if (this_hdr->sh_size < o->offset + o->size) | |
2616 | this_hdr->sh_size = o->offset + o->size; | |
2617 | if (this_hdr->sh_size) | |
2618 | this_hdr->sh_type = SHT_NOBITS; | |
2619 | } | |
2620 | } | |
252b5132 RH |
2621 | |
2622 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2623 | if (bed->elf_backend_fake_sections |
2624 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2625 | *failedptr = TRUE; |
252b5132 RH |
2626 | |
2627 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2628 | SHT_REL[A] section. If two relocation sections are required for |
2629 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2630 | create the other. */ |
23bc299b | 2631 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2632 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2633 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2634 | asect, |
68bfbfcc | 2635 | asect->use_rela_p)) |
b34976b6 | 2636 | *failedptr = TRUE; |
252b5132 RH |
2637 | } |
2638 | ||
dbb410c3 AM |
2639 | /* Fill in the contents of a SHT_GROUP section. */ |
2640 | ||
1126897b | 2641 | void |
217aa764 | 2642 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2643 | { |
217aa764 | 2644 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2645 | unsigned long symindx; |
9dce4196 | 2646 | asection *elt, *first; |
dbb410c3 AM |
2647 | unsigned char *loc; |
2648 | struct bfd_link_order *l; | |
b34976b6 | 2649 | bfd_boolean gas; |
dbb410c3 | 2650 | |
7e4111ad L |
2651 | /* Ignore linker created group section. See elfNN_ia64_object_p in |
2652 | elfxx-ia64.c. */ | |
2653 | if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP) | |
dbb410c3 AM |
2654 | || *failedptr) |
2655 | return; | |
2656 | ||
1126897b AM |
2657 | symindx = 0; |
2658 | if (elf_group_id (sec) != NULL) | |
2659 | symindx = elf_group_id (sec)->udata.i; | |
2660 | ||
2661 | if (symindx == 0) | |
2662 | { | |
2663 | /* If called from the assembler, swap_out_syms will have set up | |
2664 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2665 | if (elf_section_syms (abfd) != NULL) | |
2666 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2667 | else | |
2668 | symindx = sec->target_index; | |
2669 | } | |
dbb410c3 AM |
2670 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2671 | ||
1126897b | 2672 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2673 | gas = TRUE; |
dbb410c3 AM |
2674 | if (sec->contents == NULL) |
2675 | { | |
b34976b6 | 2676 | gas = FALSE; |
eea6121a | 2677 | sec->contents = bfd_alloc (abfd, sec->size); |
9dce4196 AM |
2678 | |
2679 | /* Arrange for the section to be written out. */ | |
2680 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2681 | if (sec->contents == NULL) |
2682 | { | |
b34976b6 | 2683 | *failedptr = TRUE; |
dbb410c3 AM |
2684 | return; |
2685 | } | |
2686 | } | |
2687 | ||
eea6121a | 2688 | loc = sec->contents + sec->size; |
dbb410c3 | 2689 | |
9dce4196 AM |
2690 | /* Get the pointer to the first section in the group that gas |
2691 | squirreled away here. objcopy arranges for this to be set to the | |
2692 | start of the input section group. */ | |
2693 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2694 | |
2695 | /* First element is a flag word. Rest of section is elf section | |
2696 | indices for all the sections of the group. Write them backwards | |
2697 | just to keep the group in the same order as given in .section | |
2698 | directives, not that it matters. */ | |
2699 | while (elt != NULL) | |
2700 | { | |
9dce4196 AM |
2701 | asection *s; |
2702 | unsigned int idx; | |
2703 | ||
dbb410c3 | 2704 | loc -= 4; |
9dce4196 AM |
2705 | s = elt; |
2706 | if (!gas) | |
2707 | s = s->output_section; | |
2708 | idx = 0; | |
2709 | if (s != NULL) | |
2710 | idx = elf_section_data (s)->this_idx; | |
2711 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2712 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2713 | if (elt == first) |
2714 | break; | |
dbb410c3 AM |
2715 | } |
2716 | ||
2717 | /* If this is a relocatable link, then the above did nothing because | |
2718 | SEC is the output section. Look through the input sections | |
2719 | instead. */ | |
2720 | for (l = sec->link_order_head; l != NULL; l = l->next) | |
2721 | if (l->type == bfd_indirect_link_order | |
945906ff | 2722 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2723 | do |
2724 | { | |
2725 | loc -= 4; | |
2726 | H_PUT_32 (abfd, | |
2727 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2728 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2729 | /* During a relocatable link, the lists are circular. */ |
2730 | } | |
945906ff | 2731 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2732 | |
3d7f7666 | 2733 | if ((loc -= 4) != sec->contents) |
9dce4196 | 2734 | abort (); |
dbb410c3 | 2735 | |
9dce4196 | 2736 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2737 | } |
2738 | ||
252b5132 RH |
2739 | /* Assign all ELF section numbers. The dummy first section is handled here |
2740 | too. The link/info pointers for the standard section types are filled | |
2741 | in here too, while we're at it. */ | |
2742 | ||
b34976b6 | 2743 | static bfd_boolean |
da9f89d4 | 2744 | assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
2745 | { |
2746 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2747 | asection *sec; | |
2b0f7ef9 | 2748 | unsigned int section_number, secn; |
252b5132 | 2749 | Elf_Internal_Shdr **i_shdrp; |
dc810e39 | 2750 | bfd_size_type amt; |
47cc2cf5 | 2751 | struct bfd_elf_section_data *d; |
252b5132 RH |
2752 | |
2753 | section_number = 1; | |
2754 | ||
2b0f7ef9 JJ |
2755 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2756 | ||
da9f89d4 L |
2757 | /* SHT_GROUP sections are in relocatable files only. */ |
2758 | if (link_info == NULL || link_info->relocatable) | |
252b5132 | 2759 | { |
da9f89d4 | 2760 | asection **secp; |
252b5132 | 2761 | |
da9f89d4 L |
2762 | /* Put SHT_GROUP sections first. */ |
2763 | secp = &abfd->sections; | |
2764 | while (*secp) | |
47cc2cf5 | 2765 | { |
da9f89d4 L |
2766 | d = elf_section_data (*secp); |
2767 | ||
2768 | if (d->this_hdr.sh_type == SHT_GROUP) | |
2769 | { | |
2770 | if ((*secp)->flags & SEC_LINKER_CREATED) | |
2771 | { | |
2772 | /* Remove the linker created SHT_GROUP sections. */ | |
2773 | bfd_section_list_remove (abfd, secp); | |
2774 | abfd->section_count--; | |
2775 | continue; | |
2776 | } | |
2777 | else | |
2778 | { | |
2779 | if (section_number == SHN_LORESERVE) | |
2780 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2781 | d->this_idx = section_number++; | |
2782 | } | |
2783 | } | |
2784 | ||
2785 | secp = &(*secp)->next; | |
47cc2cf5 PB |
2786 | } |
2787 | } | |
2788 | ||
2789 | for (sec = abfd->sections; sec; sec = sec->next) | |
2790 | { | |
2791 | d = elf_section_data (sec); | |
2792 | ||
2793 | if (d->this_hdr.sh_type != SHT_GROUP) | |
2794 | { | |
2795 | if (section_number == SHN_LORESERVE) | |
2796 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2797 | d->this_idx = section_number++; | |
2798 | } | |
2b0f7ef9 | 2799 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2800 | if ((sec->flags & SEC_RELOC) == 0) |
2801 | d->rel_idx = 0; | |
2802 | else | |
2b0f7ef9 | 2803 | { |
9ad5cbcf AM |
2804 | if (section_number == SHN_LORESERVE) |
2805 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2806 | d->rel_idx = section_number++; |
2807 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2808 | } | |
23bc299b MM |
2809 | |
2810 | if (d->rel_hdr2) | |
2b0f7ef9 | 2811 | { |
9ad5cbcf AM |
2812 | if (section_number == SHN_LORESERVE) |
2813 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2814 | d->rel_idx2 = section_number++; |
2815 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2816 | } | |
23bc299b MM |
2817 | else |
2818 | d->rel_idx2 = 0; | |
252b5132 RH |
2819 | } |
2820 | ||
9ad5cbcf AM |
2821 | if (section_number == SHN_LORESERVE) |
2822 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2823 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2824 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2825 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2826 | |
2827 | if (bfd_get_symcount (abfd) > 0) | |
2828 | { | |
9ad5cbcf AM |
2829 | if (section_number == SHN_LORESERVE) |
2830 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2831 | t->symtab_section = section_number++; |
2b0f7ef9 | 2832 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2833 | if (section_number > SHN_LORESERVE - 2) |
2834 | { | |
2835 | if (section_number == SHN_LORESERVE) | |
2836 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2837 | t->symtab_shndx_section = section_number++; | |
2838 | t->symtab_shndx_hdr.sh_name | |
2839 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2840 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2841 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2842 | return FALSE; |
9ad5cbcf AM |
2843 | } |
2844 | if (section_number == SHN_LORESERVE) | |
2845 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2846 | t->strtab_section = section_number++; |
2b0f7ef9 | 2847 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2848 | } |
2849 | ||
2b0f7ef9 JJ |
2850 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2851 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2852 | |
2853 | elf_numsections (abfd) = section_number; | |
252b5132 | 2854 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2855 | if (section_number > SHN_LORESERVE) |
2856 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2857 | |
2858 | /* Set up the list of section header pointers, in agreement with the | |
2859 | indices. */ | |
dc810e39 | 2860 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
217aa764 | 2861 | i_shdrp = bfd_zalloc (abfd, amt); |
252b5132 | 2862 | if (i_shdrp == NULL) |
b34976b6 | 2863 | return FALSE; |
252b5132 | 2864 | |
dc810e39 | 2865 | amt = sizeof (Elf_Internal_Shdr); |
217aa764 | 2866 | i_shdrp[0] = bfd_zalloc (abfd, amt); |
252b5132 RH |
2867 | if (i_shdrp[0] == NULL) |
2868 | { | |
2869 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2870 | return FALSE; |
252b5132 | 2871 | } |
252b5132 RH |
2872 | |
2873 | elf_elfsections (abfd) = i_shdrp; | |
2874 | ||
2875 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2876 | if (bfd_get_symcount (abfd) > 0) | |
2877 | { | |
2878 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2879 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2880 | { | |
2881 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2882 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2883 | } | |
252b5132 RH |
2884 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2885 | t->symtab_hdr.sh_link = t->strtab_section; | |
2886 | } | |
38ce5b11 | 2887 | |
252b5132 RH |
2888 | for (sec = abfd->sections; sec; sec = sec->next) |
2889 | { | |
2890 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2891 | asection *s; | |
2892 | const char *name; | |
2893 | ||
2894 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2895 | if (d->rel_idx != 0) | |
2896 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2897 | if (d->rel_idx2 != 0) |
2898 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2899 | |
2900 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2901 | ||
2902 | /* sh_link of a reloc section is the section index of the symbol | |
2903 | table. sh_info is the section index of the section to which | |
2904 | the relocation entries apply. */ | |
2905 | if (d->rel_idx != 0) | |
2906 | { | |
2907 | d->rel_hdr.sh_link = t->symtab_section; | |
2908 | d->rel_hdr.sh_info = d->this_idx; | |
2909 | } | |
23bc299b MM |
2910 | if (d->rel_idx2 != 0) |
2911 | { | |
2912 | d->rel_hdr2->sh_link = t->symtab_section; | |
2913 | d->rel_hdr2->sh_info = d->this_idx; | |
2914 | } | |
252b5132 | 2915 | |
38ce5b11 L |
2916 | /* We need to set up sh_link for SHF_LINK_ORDER. */ |
2917 | if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0) | |
2918 | { | |
2919 | s = elf_linked_to_section (sec); | |
2920 | if (s) | |
2921 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2922 | else | |
2923 | { | |
2924 | struct bfd_link_order *p; | |
2925 | ||
2926 | /* Find out what the corresponding section in output | |
2927 | is. */ | |
2928 | for (p = sec->link_order_head; p != NULL; p = p->next) | |
2929 | { | |
2930 | s = p->u.indirect.section; | |
2931 | if (p->type == bfd_indirect_link_order | |
2932 | && (bfd_get_flavour (s->owner) | |
2933 | == bfd_target_elf_flavour)) | |
2934 | { | |
2935 | Elf_Internal_Shdr ** const elf_shdrp | |
2936 | = elf_elfsections (s->owner); | |
2937 | int elfsec | |
2938 | = _bfd_elf_section_from_bfd_section (s->owner, s); | |
2939 | elfsec = elf_shdrp[elfsec]->sh_link; | |
185d09ad L |
2940 | /* PR 290: |
2941 | The Intel C compiler generates SHT_IA_64_UNWIND with | |
ff01938b | 2942 | SHF_LINK_ORDER. But it doesn't set the sh_link or |
185d09ad L |
2943 | sh_info fields. Hence we could get the situation |
2944 | where elfsec is 0. */ | |
2945 | if (elfsec == 0) | |
2946 | { | |
2947 | const struct elf_backend_data *bed | |
2948 | = get_elf_backend_data (abfd); | |
2949 | if (bed->link_order_error_handler) | |
d003868e | 2950 | bed->link_order_error_handler |
28b13744 | 2951 | (_("%B: warning: sh_link not set for section `%A'"), |
d003868e | 2952 | abfd, s); |
185d09ad L |
2953 | } |
2954 | else | |
2955 | { | |
01b3c8ab L |
2956 | s = elf_shdrp[elfsec]->bfd_section; |
2957 | if (elf_discarded_section (s)) | |
2958 | { | |
2959 | asection *kept; | |
2960 | (*_bfd_error_handler) | |
2961 | (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"), | |
2962 | abfd, d->this_hdr.bfd_section, | |
2963 | s, s->owner); | |
2964 | /* Point to the kept section if it has | |
2965 | the same size as the discarded | |
2966 | one. */ | |
2967 | kept = _bfd_elf_check_kept_section (s); | |
2968 | if (kept == NULL) | |
2969 | { | |
2970 | bfd_set_error (bfd_error_bad_value); | |
2971 | return FALSE; | |
2972 | } | |
2796fd96 | 2973 | s = kept; |
01b3c8ab L |
2974 | } |
2975 | s = s->output_section; | |
185d09ad L |
2976 | BFD_ASSERT (s != NULL); |
2977 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2978 | } | |
38ce5b11 L |
2979 | break; |
2980 | } | |
2981 | } | |
2982 | } | |
2983 | } | |
2984 | ||
252b5132 RH |
2985 | switch (d->this_hdr.sh_type) |
2986 | { | |
2987 | case SHT_REL: | |
2988 | case SHT_RELA: | |
2989 | /* A reloc section which we are treating as a normal BFD | |
2990 | section. sh_link is the section index of the symbol | |
2991 | table. sh_info is the section index of the section to | |
2992 | which the relocation entries apply. We assume that an | |
2993 | allocated reloc section uses the dynamic symbol table. | |
2994 | FIXME: How can we be sure? */ | |
2995 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2996 | if (s != NULL) | |
2997 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2998 | ||
2999 | /* We look up the section the relocs apply to by name. */ | |
3000 | name = sec->name; | |
3001 | if (d->this_hdr.sh_type == SHT_REL) | |
3002 | name += 4; | |
3003 | else | |
3004 | name += 5; | |
3005 | s = bfd_get_section_by_name (abfd, name); | |
3006 | if (s != NULL) | |
3007 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
3008 | break; | |
3009 | ||
3010 | case SHT_STRTAB: | |
3011 | /* We assume that a section named .stab*str is a stabs | |
3012 | string section. We look for a section with the same name | |
3013 | but without the trailing ``str'', and set its sh_link | |
3014 | field to point to this section. */ | |
3015 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
3016 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
3017 | { | |
3018 | size_t len; | |
3019 | char *alc; | |
3020 | ||
3021 | len = strlen (sec->name); | |
217aa764 | 3022 | alc = bfd_malloc (len - 2); |
252b5132 | 3023 | if (alc == NULL) |
b34976b6 | 3024 | return FALSE; |
d4c88bbb | 3025 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
3026 | alc[len - 3] = '\0'; |
3027 | s = bfd_get_section_by_name (abfd, alc); | |
3028 | free (alc); | |
3029 | if (s != NULL) | |
3030 | { | |
3031 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
3032 | ||
3033 | /* This is a .stab section. */ | |
0594c12d AM |
3034 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
3035 | elf_section_data (s)->this_hdr.sh_entsize | |
3036 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
3037 | } |
3038 | } | |
3039 | break; | |
3040 | ||
3041 | case SHT_DYNAMIC: | |
3042 | case SHT_DYNSYM: | |
3043 | case SHT_GNU_verneed: | |
3044 | case SHT_GNU_verdef: | |
3045 | /* sh_link is the section header index of the string table | |
3046 | used for the dynamic entries, or the symbol table, or the | |
3047 | version strings. */ | |
3048 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
3049 | if (s != NULL) | |
3050 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3051 | break; | |
3052 | ||
7f1204bb JJ |
3053 | case SHT_GNU_LIBLIST: |
3054 | /* sh_link is the section header index of the prelink library | |
3055 | list | |
3056 | used for the dynamic entries, or the symbol table, or the | |
3057 | version strings. */ | |
3058 | s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC) | |
3059 | ? ".dynstr" : ".gnu.libstr"); | |
3060 | if (s != NULL) | |
3061 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3062 | break; | |
3063 | ||
252b5132 RH |
3064 | case SHT_HASH: |
3065 | case SHT_GNU_versym: | |
3066 | /* sh_link is the section header index of the symbol table | |
3067 | this hash table or version table is for. */ | |
3068 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
3069 | if (s != NULL) | |
3070 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
3071 | break; | |
dbb410c3 AM |
3072 | |
3073 | case SHT_GROUP: | |
3074 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
3075 | } |
3076 | } | |
3077 | ||
2b0f7ef9 | 3078 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
3079 | if (i_shdrp[secn] == NULL) |
3080 | i_shdrp[secn] = i_shdrp[0]; | |
3081 | else | |
3082 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
3083 | i_shdrp[secn]->sh_name); | |
b34976b6 | 3084 | return TRUE; |
252b5132 RH |
3085 | } |
3086 | ||
3087 | /* Map symbol from it's internal number to the external number, moving | |
3088 | all local symbols to be at the head of the list. */ | |
3089 | ||
268b6b39 | 3090 | static int |
217aa764 | 3091 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
3092 | { |
3093 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 3094 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
3095 | if (bed->elf_backend_sym_is_global) |
3096 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
3097 | |
3098 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
3099 | || bfd_is_und_section (bfd_get_section (sym)) | |
3100 | || bfd_is_com_section (bfd_get_section (sym))); | |
3101 | } | |
3102 | ||
b34976b6 | 3103 | static bfd_boolean |
217aa764 | 3104 | elf_map_symbols (bfd *abfd) |
252b5132 | 3105 | { |
dc810e39 | 3106 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
3107 | asymbol **syms = bfd_get_outsymbols (abfd); |
3108 | asymbol **sect_syms; | |
dc810e39 AM |
3109 | unsigned int num_locals = 0; |
3110 | unsigned int num_globals = 0; | |
3111 | unsigned int num_locals2 = 0; | |
3112 | unsigned int num_globals2 = 0; | |
252b5132 | 3113 | int max_index = 0; |
dc810e39 | 3114 | unsigned int idx; |
252b5132 RH |
3115 | asection *asect; |
3116 | asymbol **new_syms; | |
dc810e39 | 3117 | bfd_size_type amt; |
252b5132 RH |
3118 | |
3119 | #ifdef DEBUG | |
3120 | fprintf (stderr, "elf_map_symbols\n"); | |
3121 | fflush (stderr); | |
3122 | #endif | |
3123 | ||
252b5132 RH |
3124 | for (asect = abfd->sections; asect; asect = asect->next) |
3125 | { | |
3126 | if (max_index < asect->index) | |
3127 | max_index = asect->index; | |
3128 | } | |
3129 | ||
3130 | max_index++; | |
dc810e39 | 3131 | amt = max_index * sizeof (asymbol *); |
217aa764 | 3132 | sect_syms = bfd_zalloc (abfd, amt); |
252b5132 | 3133 | if (sect_syms == NULL) |
b34976b6 | 3134 | return FALSE; |
252b5132 | 3135 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 3136 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 3137 | |
079e9a2f AM |
3138 | /* Init sect_syms entries for any section symbols we have already |
3139 | decided to output. */ | |
252b5132 RH |
3140 | for (idx = 0; idx < symcount; idx++) |
3141 | { | |
dc810e39 | 3142 | asymbol *sym = syms[idx]; |
c044fabd | 3143 | |
252b5132 RH |
3144 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
3145 | && sym->value == 0) | |
3146 | { | |
3147 | asection *sec; | |
3148 | ||
3149 | sec = sym->section; | |
3150 | ||
3151 | if (sec->owner != NULL) | |
3152 | { | |
3153 | if (sec->owner != abfd) | |
3154 | { | |
3155 | if (sec->output_offset != 0) | |
3156 | continue; | |
c044fabd | 3157 | |
252b5132 RH |
3158 | sec = sec->output_section; |
3159 | ||
079e9a2f AM |
3160 | /* Empty sections in the input files may have had a |
3161 | section symbol created for them. (See the comment | |
3162 | near the end of _bfd_generic_link_output_symbols in | |
3163 | linker.c). If the linker script discards such | |
3164 | sections then we will reach this point. Since we know | |
3165 | that we cannot avoid this case, we detect it and skip | |
3166 | the abort and the assignment to the sect_syms array. | |
3167 | To reproduce this particular case try running the | |
3168 | linker testsuite test ld-scripts/weak.exp for an ELF | |
3169 | port that uses the generic linker. */ | |
252b5132 RH |
3170 | if (sec->owner == NULL) |
3171 | continue; | |
3172 | ||
3173 | BFD_ASSERT (sec->owner == abfd); | |
3174 | } | |
3175 | sect_syms[sec->index] = syms[idx]; | |
3176 | } | |
3177 | } | |
3178 | } | |
3179 | ||
252b5132 RH |
3180 | /* Classify all of the symbols. */ |
3181 | for (idx = 0; idx < symcount; idx++) | |
3182 | { | |
3183 | if (!sym_is_global (abfd, syms[idx])) | |
3184 | num_locals++; | |
3185 | else | |
3186 | num_globals++; | |
3187 | } | |
079e9a2f AM |
3188 | |
3189 | /* We will be adding a section symbol for each BFD section. Most normal | |
3190 | sections will already have a section symbol in outsymbols, but | |
3191 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
3192 | at least in that case. */ | |
252b5132 RH |
3193 | for (asect = abfd->sections; asect; asect = asect->next) |
3194 | { | |
079e9a2f | 3195 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3196 | { |
079e9a2f | 3197 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
3198 | num_locals++; |
3199 | else | |
3200 | num_globals++; | |
252b5132 RH |
3201 | } |
3202 | } | |
3203 | ||
3204 | /* Now sort the symbols so the local symbols are first. */ | |
dc810e39 | 3205 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
217aa764 | 3206 | new_syms = bfd_alloc (abfd, amt); |
dc810e39 | 3207 | |
252b5132 | 3208 | if (new_syms == NULL) |
b34976b6 | 3209 | return FALSE; |
252b5132 RH |
3210 | |
3211 | for (idx = 0; idx < symcount; idx++) | |
3212 | { | |
3213 | asymbol *sym = syms[idx]; | |
dc810e39 | 3214 | unsigned int i; |
252b5132 RH |
3215 | |
3216 | if (!sym_is_global (abfd, sym)) | |
3217 | i = num_locals2++; | |
3218 | else | |
3219 | i = num_locals + num_globals2++; | |
3220 | new_syms[i] = sym; | |
3221 | sym->udata.i = i + 1; | |
3222 | } | |
3223 | for (asect = abfd->sections; asect; asect = asect->next) | |
3224 | { | |
079e9a2f | 3225 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3226 | { |
079e9a2f | 3227 | asymbol *sym = asect->symbol; |
dc810e39 | 3228 | unsigned int i; |
252b5132 | 3229 | |
079e9a2f | 3230 | sect_syms[asect->index] = sym; |
252b5132 RH |
3231 | if (!sym_is_global (abfd, sym)) |
3232 | i = num_locals2++; | |
3233 | else | |
3234 | i = num_locals + num_globals2++; | |
3235 | new_syms[i] = sym; | |
3236 | sym->udata.i = i + 1; | |
3237 | } | |
3238 | } | |
3239 | ||
3240 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3241 | ||
3242 | elf_num_locals (abfd) = num_locals; | |
3243 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3244 | return TRUE; |
252b5132 RH |
3245 | } |
3246 | ||
3247 | /* Align to the maximum file alignment that could be required for any | |
3248 | ELF data structure. */ | |
3249 | ||
268b6b39 | 3250 | static inline file_ptr |
217aa764 | 3251 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3252 | { |
3253 | return (off + align - 1) & ~(align - 1); | |
3254 | } | |
3255 | ||
3256 | /* Assign a file position to a section, optionally aligning to the | |
3257 | required section alignment. */ | |
3258 | ||
217aa764 AM |
3259 | file_ptr |
3260 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3261 | file_ptr offset, | |
3262 | bfd_boolean align) | |
252b5132 RH |
3263 | { |
3264 | if (align) | |
3265 | { | |
3266 | unsigned int al; | |
3267 | ||
3268 | al = i_shdrp->sh_addralign; | |
3269 | if (al > 1) | |
3270 | offset = BFD_ALIGN (offset, al); | |
3271 | } | |
3272 | i_shdrp->sh_offset = offset; | |
3273 | if (i_shdrp->bfd_section != NULL) | |
3274 | i_shdrp->bfd_section->filepos = offset; | |
3275 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3276 | offset += i_shdrp->sh_size; | |
3277 | return offset; | |
3278 | } | |
3279 | ||
3280 | /* Compute the file positions we are going to put the sections at, and | |
3281 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3282 | is not NULL, this is being called by the ELF backend linker. */ | |
3283 | ||
b34976b6 | 3284 | bfd_boolean |
217aa764 AM |
3285 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3286 | struct bfd_link_info *link_info) | |
252b5132 | 3287 | { |
9c5bfbb7 | 3288 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3289 | bfd_boolean failed; |
4b6c0f2f | 3290 | struct bfd_strtab_hash *strtab = NULL; |
252b5132 RH |
3291 | Elf_Internal_Shdr *shstrtab_hdr; |
3292 | ||
3293 | if (abfd->output_has_begun) | |
b34976b6 | 3294 | return TRUE; |
252b5132 RH |
3295 | |
3296 | /* Do any elf backend specific processing first. */ | |
3297 | if (bed->elf_backend_begin_write_processing) | |
3298 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3299 | ||
3300 | if (! prep_headers (abfd)) | |
b34976b6 | 3301 | return FALSE; |
252b5132 | 3302 | |
e6c51ed4 NC |
3303 | /* Post process the headers if necessary. */ |
3304 | if (bed->elf_backend_post_process_headers) | |
3305 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3306 | ||
b34976b6 | 3307 | failed = FALSE; |
252b5132 RH |
3308 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3309 | if (failed) | |
b34976b6 | 3310 | return FALSE; |
252b5132 | 3311 | |
da9f89d4 | 3312 | if (!assign_section_numbers (abfd, link_info)) |
b34976b6 | 3313 | return FALSE; |
252b5132 RH |
3314 | |
3315 | /* The backend linker builds symbol table information itself. */ | |
3316 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3317 | { | |
3318 | /* Non-zero if doing a relocatable link. */ | |
3319 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3320 | ||
3321 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3322 | return FALSE; |
252b5132 RH |
3323 | } |
3324 | ||
1126897b | 3325 | if (link_info == NULL) |
dbb410c3 | 3326 | { |
1126897b | 3327 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3328 | if (failed) |
b34976b6 | 3329 | return FALSE; |
dbb410c3 AM |
3330 | } |
3331 | ||
252b5132 RH |
3332 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3333 | /* sh_name was set in prep_headers. */ | |
3334 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3335 | shstrtab_hdr->sh_flags = 0; | |
3336 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3337 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3338 | shstrtab_hdr->sh_entsize = 0; |
3339 | shstrtab_hdr->sh_link = 0; | |
3340 | shstrtab_hdr->sh_info = 0; | |
3341 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3342 | shstrtab_hdr->sh_addralign = 1; | |
3343 | ||
c84fca4d | 3344 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3345 | return FALSE; |
252b5132 RH |
3346 | |
3347 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3348 | { | |
3349 | file_ptr off; | |
3350 | Elf_Internal_Shdr *hdr; | |
3351 | ||
3352 | off = elf_tdata (abfd)->next_file_pos; | |
3353 | ||
3354 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3355 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3356 | |
9ad5cbcf AM |
3357 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3358 | if (hdr->sh_size != 0) | |
b34976b6 | 3359 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3360 | |
252b5132 | 3361 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3362 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3363 | |
3364 | elf_tdata (abfd)->next_file_pos = off; | |
3365 | ||
3366 | /* Now that we know where the .strtab section goes, write it | |
3367 | out. */ | |
3368 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3369 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3370 | return FALSE; |
252b5132 RH |
3371 | _bfd_stringtab_free (strtab); |
3372 | } | |
3373 | ||
b34976b6 | 3374 | abfd->output_has_begun = TRUE; |
252b5132 | 3375 | |
b34976b6 | 3376 | return TRUE; |
252b5132 RH |
3377 | } |
3378 | ||
3379 | /* Create a mapping from a set of sections to a program segment. */ | |
3380 | ||
217aa764 AM |
3381 | static struct elf_segment_map * |
3382 | make_mapping (bfd *abfd, | |
3383 | asection **sections, | |
3384 | unsigned int from, | |
3385 | unsigned int to, | |
3386 | bfd_boolean phdr) | |
252b5132 RH |
3387 | { |
3388 | struct elf_segment_map *m; | |
3389 | unsigned int i; | |
3390 | asection **hdrpp; | |
dc810e39 | 3391 | bfd_size_type amt; |
252b5132 | 3392 | |
dc810e39 AM |
3393 | amt = sizeof (struct elf_segment_map); |
3394 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3395 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3396 | if (m == NULL) |
3397 | return NULL; | |
3398 | m->next = NULL; | |
3399 | m->p_type = PT_LOAD; | |
3400 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3401 | m->sections[i - from] = *hdrpp; | |
3402 | m->count = to - from; | |
3403 | ||
3404 | if (from == 0 && phdr) | |
3405 | { | |
3406 | /* Include the headers in the first PT_LOAD segment. */ | |
3407 | m->includes_filehdr = 1; | |
3408 | m->includes_phdrs = 1; | |
3409 | } | |
3410 | ||
3411 | return m; | |
3412 | } | |
3413 | ||
229fcec5 MM |
3414 | /* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL |
3415 | on failure. */ | |
3416 | ||
3417 | struct elf_segment_map * | |
3418 | _bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec) | |
3419 | { | |
3420 | struct elf_segment_map *m; | |
3421 | ||
3422 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
3423 | if (m == NULL) | |
3424 | return NULL; | |
3425 | m->next = NULL; | |
3426 | m->p_type = PT_DYNAMIC; | |
3427 | m->count = 1; | |
3428 | m->sections[0] = dynsec; | |
3429 | ||
3430 | return m; | |
3431 | } | |
3432 | ||
252b5132 RH |
3433 | /* Set up a mapping from BFD sections to program segments. */ |
3434 | ||
b34976b6 | 3435 | static bfd_boolean |
217aa764 | 3436 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3437 | { |
3438 | asection **sections = NULL; | |
3439 | asection *s; | |
3440 | unsigned int i; | |
3441 | unsigned int count; | |
3442 | struct elf_segment_map *mfirst; | |
3443 | struct elf_segment_map **pm; | |
3444 | struct elf_segment_map *m; | |
3445 | asection *last_hdr; | |
baaff79e | 3446 | bfd_vma last_size; |
252b5132 RH |
3447 | unsigned int phdr_index; |
3448 | bfd_vma maxpagesize; | |
3449 | asection **hdrpp; | |
b34976b6 AM |
3450 | bfd_boolean phdr_in_segment = TRUE; |
3451 | bfd_boolean writable; | |
13ae64f3 JJ |
3452 | int tls_count = 0; |
3453 | asection *first_tls = NULL; | |
65765700 | 3454 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3455 | bfd_size_type amt; |
252b5132 RH |
3456 | |
3457 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3458 | return TRUE; |
252b5132 RH |
3459 | |
3460 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3461 | return TRUE; |
252b5132 RH |
3462 | |
3463 | /* Select the allocated sections, and sort them. */ | |
3464 | ||
dc810e39 | 3465 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
217aa764 | 3466 | sections = bfd_malloc (amt); |
252b5132 RH |
3467 | if (sections == NULL) |
3468 | goto error_return; | |
3469 | ||
3470 | i = 0; | |
3471 | for (s = abfd->sections; s != NULL; s = s->next) | |
3472 | { | |
3473 | if ((s->flags & SEC_ALLOC) != 0) | |
3474 | { | |
3475 | sections[i] = s; | |
3476 | ++i; | |
3477 | } | |
3478 | } | |
3479 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3480 | count = i; | |
3481 | ||
3482 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3483 | ||
3484 | /* Build the mapping. */ | |
3485 | ||
3486 | mfirst = NULL; | |
3487 | pm = &mfirst; | |
3488 | ||
3489 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3490 | the program headers and a PT_INTERP segment for the .interp | |
3491 | section. */ | |
3492 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3493 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3494 | { | |
dc810e39 | 3495 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3496 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3497 | if (m == NULL) |
3498 | goto error_return; | |
3499 | m->next = NULL; | |
3500 | m->p_type = PT_PHDR; | |
3501 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3502 | m->p_flags = PF_R | PF_X; | |
3503 | m->p_flags_valid = 1; | |
3504 | m->includes_phdrs = 1; | |
3505 | ||
3506 | *pm = m; | |
3507 | pm = &m->next; | |
3508 | ||
dc810e39 | 3509 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3510 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3511 | if (m == NULL) |
3512 | goto error_return; | |
3513 | m->next = NULL; | |
3514 | m->p_type = PT_INTERP; | |
3515 | m->count = 1; | |
3516 | m->sections[0] = s; | |
3517 | ||
3518 | *pm = m; | |
3519 | pm = &m->next; | |
3520 | } | |
3521 | ||
3522 | /* Look through the sections. We put sections in the same program | |
3523 | segment when the start of the second section can be placed within | |
3524 | a few bytes of the end of the first section. */ | |
3525 | last_hdr = NULL; | |
baaff79e | 3526 | last_size = 0; |
252b5132 RH |
3527 | phdr_index = 0; |
3528 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3529 | writable = FALSE; |
252b5132 RH |
3530 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3531 | if (dynsec != NULL | |
3532 | && (dynsec->flags & SEC_LOAD) == 0) | |
3533 | dynsec = NULL; | |
3534 | ||
3535 | /* Deal with -Ttext or something similar such that the first section | |
3536 | is not adjacent to the program headers. This is an | |
3537 | approximation, since at this point we don't know exactly how many | |
3538 | program headers we will need. */ | |
3539 | if (count > 0) | |
3540 | { | |
3541 | bfd_size_type phdr_size; | |
3542 | ||
3543 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3544 | if (phdr_size == 0) | |
3545 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3546 | if ((abfd->flags & D_PAGED) == 0 | |
3547 | || sections[0]->lma < phdr_size | |
3548 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3549 | phdr_in_segment = FALSE; |
252b5132 RH |
3550 | } |
3551 | ||
3552 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3553 | { | |
3554 | asection *hdr; | |
b34976b6 | 3555 | bfd_boolean new_segment; |
252b5132 RH |
3556 | |
3557 | hdr = *hdrpp; | |
3558 | ||
3559 | /* See if this section and the last one will fit in the same | |
3560 | segment. */ | |
3561 | ||
3562 | if (last_hdr == NULL) | |
3563 | { | |
3564 | /* If we don't have a segment yet, then we don't need a new | |
3565 | one (we build the last one after this loop). */ | |
b34976b6 | 3566 | new_segment = FALSE; |
252b5132 RH |
3567 | } |
3568 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3569 | { | |
3570 | /* If this section has a different relation between the | |
3571 | virtual address and the load address, then we need a new | |
3572 | segment. */ | |
b34976b6 | 3573 | new_segment = TRUE; |
252b5132 | 3574 | } |
baaff79e | 3575 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3576 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3577 | { | |
3578 | /* If putting this section in this segment would force us to | |
3579 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3580 | new_segment = TRUE; |
252b5132 | 3581 | } |
baaff79e JJ |
3582 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3583 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3584 | { |
3585 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3586 | nonloadable section in the same segment. |
3587 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3588 | new_segment = TRUE; |
252b5132 RH |
3589 | } |
3590 | else if ((abfd->flags & D_PAGED) == 0) | |
3591 | { | |
3592 | /* If the file is not demand paged, which means that we | |
3593 | don't require the sections to be correctly aligned in the | |
3594 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3595 | new_segment = FALSE; |
252b5132 RH |
3596 | } |
3597 | else if (! writable | |
3598 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3599 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3600 | & ~(maxpagesize - 1)) |
3601 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3602 | { |
3603 | /* We don't want to put a writable section in a read only | |
3604 | segment, unless they are on the same page in memory | |
3605 | anyhow. We already know that the last section does not | |
3606 | bring us past the current section on the page, so the | |
3607 | only case in which the new section is not on the same | |
3608 | page as the previous section is when the previous section | |
3609 | ends precisely on a page boundary. */ | |
b34976b6 | 3610 | new_segment = TRUE; |
252b5132 RH |
3611 | } |
3612 | else | |
3613 | { | |
3614 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3615 | new_segment = FALSE; |
252b5132 RH |
3616 | } |
3617 | ||
3618 | if (! new_segment) | |
3619 | { | |
3620 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3621 | writable = TRUE; |
baaff79e JJ |
3622 | last_hdr = hdr; |
3623 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3624 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
eea6121a | 3625 | last_size = hdr->size; |
baaff79e JJ |
3626 | else |
3627 | last_size = 0; | |
252b5132 RH |
3628 | continue; |
3629 | } | |
3630 | ||
3631 | /* We need a new program segment. We must create a new program | |
3632 | header holding all the sections from phdr_index until hdr. */ | |
3633 | ||
3634 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3635 | if (m == NULL) | |
3636 | goto error_return; | |
3637 | ||
3638 | *pm = m; | |
3639 | pm = &m->next; | |
3640 | ||
3641 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3642 | writable = TRUE; |
252b5132 | 3643 | else |
b34976b6 | 3644 | writable = FALSE; |
252b5132 RH |
3645 | |
3646 | last_hdr = hdr; | |
baaff79e JJ |
3647 | /* .tbss sections effectively have zero size. */ |
3648 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
eea6121a | 3649 | last_size = hdr->size; |
baaff79e JJ |
3650 | else |
3651 | last_size = 0; | |
252b5132 | 3652 | phdr_index = i; |
b34976b6 | 3653 | phdr_in_segment = FALSE; |
252b5132 RH |
3654 | } |
3655 | ||
3656 | /* Create a final PT_LOAD program segment. */ | |
3657 | if (last_hdr != NULL) | |
3658 | { | |
3659 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3660 | if (m == NULL) | |
3661 | goto error_return; | |
3662 | ||
3663 | *pm = m; | |
3664 | pm = &m->next; | |
3665 | } | |
3666 | ||
3667 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3668 | if (dynsec != NULL) | |
3669 | { | |
229fcec5 | 3670 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); |
252b5132 RH |
3671 | if (m == NULL) |
3672 | goto error_return; | |
252b5132 RH |
3673 | *pm = m; |
3674 | pm = &m->next; | |
3675 | } | |
3676 | ||
3677 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3678 | use bfd_get_section_by_name, because if we link together | |
3679 | nonloadable .note sections and loadable .note sections, we will | |
3680 | generate two .note sections in the output file. FIXME: Using | |
3681 | names for section types is bogus anyhow. */ | |
3682 | for (s = abfd->sections; s != NULL; s = s->next) | |
3683 | { | |
3684 | if ((s->flags & SEC_LOAD) != 0 | |
3685 | && strncmp (s->name, ".note", 5) == 0) | |
3686 | { | |
dc810e39 | 3687 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3688 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3689 | if (m == NULL) |
3690 | goto error_return; | |
3691 | m->next = NULL; | |
3692 | m->p_type = PT_NOTE; | |
3693 | m->count = 1; | |
3694 | m->sections[0] = s; | |
3695 | ||
3696 | *pm = m; | |
3697 | pm = &m->next; | |
3698 | } | |
13ae64f3 JJ |
3699 | if (s->flags & SEC_THREAD_LOCAL) |
3700 | { | |
3701 | if (! tls_count) | |
3702 | first_tls = s; | |
3703 | tls_count++; | |
3704 | } | |
3705 | } | |
3706 | ||
3707 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3708 | if (tls_count > 0) | |
3709 | { | |
3710 | int i; | |
3711 | ||
3712 | amt = sizeof (struct elf_segment_map); | |
3713 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3714 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3715 | if (m == NULL) |
3716 | goto error_return; | |
3717 | m->next = NULL; | |
3718 | m->p_type = PT_TLS; | |
3719 | m->count = tls_count; | |
3720 | /* Mandated PF_R. */ | |
3721 | m->p_flags = PF_R; | |
3722 | m->p_flags_valid = 1; | |
3723 | for (i = 0; i < tls_count; ++i) | |
3724 | { | |
3725 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3726 | m->sections[i] = first_tls; | |
3727 | first_tls = first_tls->next; | |
3728 | } | |
3729 | ||
3730 | *pm = m; | |
3731 | pm = &m->next; | |
252b5132 RH |
3732 | } |
3733 | ||
65765700 JJ |
3734 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3735 | segment. */ | |
126495ed AM |
3736 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3737 | if (eh_frame_hdr != NULL | |
3738 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3739 | { |
3740 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3741 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3742 | if (m == NULL) |
3743 | goto error_return; | |
3744 | m->next = NULL; | |
3745 | m->p_type = PT_GNU_EH_FRAME; | |
3746 | m->count = 1; | |
126495ed | 3747 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3748 | |
3749 | *pm = m; | |
3750 | pm = &m->next; | |
3751 | } | |
3752 | ||
9ee5e499 JJ |
3753 | if (elf_tdata (abfd)->stack_flags) |
3754 | { | |
3755 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3756 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3757 | if (m == NULL) |
3758 | goto error_return; | |
3759 | m->next = NULL; | |
3760 | m->p_type = PT_GNU_STACK; | |
3761 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3762 | m->p_flags_valid = 1; | |
3763 | ||
3764 | *pm = m; | |
3765 | pm = &m->next; | |
3766 | } | |
3767 | ||
8c37241b JJ |
3768 | if (elf_tdata (abfd)->relro) |
3769 | { | |
3770 | amt = sizeof (struct elf_segment_map); | |
3771 | m = bfd_zalloc (abfd, amt); | |
3772 | if (m == NULL) | |
3773 | goto error_return; | |
3774 | m->next = NULL; | |
3775 | m->p_type = PT_GNU_RELRO; | |
3776 | m->p_flags = PF_R; | |
3777 | m->p_flags_valid = 1; | |
3778 | ||
3779 | *pm = m; | |
3780 | pm = &m->next; | |
3781 | } | |
3782 | ||
252b5132 RH |
3783 | free (sections); |
3784 | sections = NULL; | |
3785 | ||
3786 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3787 | return TRUE; |
252b5132 RH |
3788 | |
3789 | error_return: | |
3790 | if (sections != NULL) | |
3791 | free (sections); | |
b34976b6 | 3792 | return FALSE; |
252b5132 RH |
3793 | } |
3794 | ||
3795 | /* Sort sections by address. */ | |
3796 | ||
3797 | static int | |
217aa764 | 3798 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3799 | { |
3800 | const asection *sec1 = *(const asection **) arg1; | |
3801 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3802 | bfd_size_type size1, size2; |
252b5132 RH |
3803 | |
3804 | /* Sort by LMA first, since this is the address used to | |
3805 | place the section into a segment. */ | |
3806 | if (sec1->lma < sec2->lma) | |
3807 | return -1; | |
3808 | else if (sec1->lma > sec2->lma) | |
3809 | return 1; | |
3810 | ||
3811 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3812 | the same, and this will do nothing. */ | |
3813 | if (sec1->vma < sec2->vma) | |
3814 | return -1; | |
3815 | else if (sec1->vma > sec2->vma) | |
3816 | return 1; | |
3817 | ||
3818 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3819 | ||
07c6e936 | 3820 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3821 | |
3822 | if (TOEND (sec1)) | |
3823 | { | |
3824 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3825 | { |
3826 | /* If the indicies are the same, do not return 0 | |
3827 | here, but continue to try the next comparison. */ | |
3828 | if (sec1->target_index - sec2->target_index != 0) | |
3829 | return sec1->target_index - sec2->target_index; | |
3830 | } | |
252b5132 RH |
3831 | else |
3832 | return 1; | |
3833 | } | |
00a7cdc5 | 3834 | else if (TOEND (sec2)) |
252b5132 RH |
3835 | return -1; |
3836 | ||
3837 | #undef TOEND | |
3838 | ||
00a7cdc5 NC |
3839 | /* Sort by size, to put zero sized sections |
3840 | before others at the same address. */ | |
252b5132 | 3841 | |
eea6121a AM |
3842 | size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0; |
3843 | size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0; | |
eecdbe52 JJ |
3844 | |
3845 | if (size1 < size2) | |
252b5132 | 3846 | return -1; |
eecdbe52 | 3847 | if (size1 > size2) |
252b5132 RH |
3848 | return 1; |
3849 | ||
3850 | return sec1->target_index - sec2->target_index; | |
3851 | } | |
3852 | ||
340b6d91 AC |
3853 | /* Ian Lance Taylor writes: |
3854 | ||
3855 | We shouldn't be using % with a negative signed number. That's just | |
3856 | not good. We have to make sure either that the number is not | |
3857 | negative, or that the number has an unsigned type. When the types | |
3858 | are all the same size they wind up as unsigned. When file_ptr is a | |
3859 | larger signed type, the arithmetic winds up as signed long long, | |
3860 | which is wrong. | |
3861 | ||
3862 | What we're trying to say here is something like ``increase OFF by | |
3863 | the least amount that will cause it to be equal to the VMA modulo | |
3864 | the page size.'' */ | |
3865 | /* In other words, something like: | |
3866 | ||
3867 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
3868 | off_offset = off % bed->maxpagesize; | |
3869 | if (vma_offset < off_offset) | |
3870 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
3871 | else | |
3872 | adjustment = vma_offset - off_offset; | |
3873 | ||
3874 | which can can be collapsed into the expression below. */ | |
3875 | ||
3876 | static file_ptr | |
3877 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
3878 | { | |
3879 | return ((vma - off) % maxpagesize); | |
3880 | } | |
3881 | ||
252b5132 RH |
3882 | /* Assign file positions to the sections based on the mapping from |
3883 | sections to segments. This function also sets up some fields in | |
3884 | the file header, and writes out the program headers. */ | |
3885 | ||
b34976b6 | 3886 | static bfd_boolean |
c84fca4d | 3887 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3888 | { |
3889 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3890 | unsigned int count; | |
3891 | struct elf_segment_map *m; | |
3892 | unsigned int alloc; | |
3893 | Elf_Internal_Phdr *phdrs; | |
3894 | file_ptr off, voff; | |
3895 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
3896 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
3897 | Elf_Internal_Phdr *p; | |
dc810e39 | 3898 | bfd_size_type amt; |
252b5132 RH |
3899 | |
3900 | if (elf_tdata (abfd)->segment_map == NULL) | |
3901 | { | |
3902 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 3903 | return FALSE; |
252b5132 | 3904 | } |
1ed89aa9 NC |
3905 | else |
3906 | { | |
3907 | /* The placement algorithm assumes that non allocated sections are | |
3908 | not in PT_LOAD segments. We ensure this here by removing such | |
3909 | sections from the segment map. */ | |
3910 | for (m = elf_tdata (abfd)->segment_map; | |
3911 | m != NULL; | |
3912 | m = m->next) | |
3913 | { | |
3914 | unsigned int new_count; | |
3915 | unsigned int i; | |
3916 | ||
3917 | if (m->p_type != PT_LOAD) | |
3918 | continue; | |
3919 | ||
3920 | new_count = 0; | |
3921 | for (i = 0; i < m->count; i ++) | |
3922 | { | |
3923 | if ((m->sections[i]->flags & SEC_ALLOC) != 0) | |
3924 | { | |
47d9a591 | 3925 | if (i != new_count) |
1ed89aa9 NC |
3926 | m->sections[new_count] = m->sections[i]; |
3927 | ||
3928 | new_count ++; | |
3929 | } | |
3930 | } | |
3931 | ||
3932 | if (new_count != m->count) | |
3933 | m->count = new_count; | |
3934 | } | |
3935 | } | |
252b5132 RH |
3936 | |
3937 | if (bed->elf_backend_modify_segment_map) | |
3938 | { | |
c84fca4d | 3939 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 3940 | return FALSE; |
252b5132 RH |
3941 | } |
3942 | ||
3943 | count = 0; | |
3944 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
3945 | ++count; | |
3946 | ||
3947 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
3948 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
3949 | elf_elfheader (abfd)->e_phnum = count; | |
3950 | ||
3951 | if (count == 0) | |
0ebdbb83 BW |
3952 | { |
3953 | elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr; | |
3954 | return TRUE; | |
3955 | } | |
252b5132 RH |
3956 | |
3957 | /* If we already counted the number of program segments, make sure | |
3958 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
3959 | is used in a linker script. */ | |
3960 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
3961 | if (alloc != 0 && count > alloc) | |
3962 | { | |
3963 | ((*_bfd_error_handler) | |
b301b248 AM |
3964 | (_("%B: Not enough room for program headers (allocated %u, need %u)"), |
3965 | abfd, alloc, count)); | |
252b5132 | 3966 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3967 | return FALSE; |
252b5132 RH |
3968 | } |
3969 | ||
3970 | if (alloc == 0) | |
3971 | alloc = count; | |
3972 | ||
dc810e39 | 3973 | amt = alloc * sizeof (Elf_Internal_Phdr); |
217aa764 | 3974 | phdrs = bfd_alloc (abfd, amt); |
252b5132 | 3975 | if (phdrs == NULL) |
b34976b6 | 3976 | return FALSE; |
252b5132 RH |
3977 | |
3978 | off = bed->s->sizeof_ehdr; | |
3979 | off += alloc * bed->s->sizeof_phdr; | |
3980 | ||
3981 | filehdr_vaddr = 0; | |
3982 | filehdr_paddr = 0; | |
3983 | phdrs_vaddr = 0; | |
3984 | phdrs_paddr = 0; | |
3985 | ||
3986 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
3987 | m != NULL; | |
3988 | m = m->next, p++) | |
3989 | { | |
3990 | unsigned int i; | |
3991 | asection **secpp; | |
3992 | ||
3993 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 3994 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
3995 | not be done to the PT_NOTE section of a corefile, which may |
3996 | contain several pseudo-sections artificially created by bfd. | |
3997 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
3998 | if (m->count > 1 |
3999 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 4000 | && m->p_type == PT_NOTE)) |
252b5132 RH |
4001 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
4002 | elf_sort_sections); | |
4003 | ||
b301b248 AM |
4004 | /* An ELF segment (described by Elf_Internal_Phdr) may contain a |
4005 | number of sections with contents contributing to both p_filesz | |
4006 | and p_memsz, followed by a number of sections with no contents | |
4007 | that just contribute to p_memsz. In this loop, OFF tracks next | |
4008 | available file offset for PT_LOAD and PT_NOTE segments. VOFF is | |
4009 | an adjustment we use for segments that have no file contents | |
4010 | but need zero filled memory allocation. */ | |
4011 | voff = 0; | |
252b5132 | 4012 | p->p_type = m->p_type; |
28a7f3e7 | 4013 | p->p_flags = m->p_flags; |
252b5132 RH |
4014 | |
4015 | if (p->p_type == PT_LOAD | |
b301b248 | 4016 | && m->count > 0) |
252b5132 | 4017 | { |
b301b248 AM |
4018 | bfd_size_type align; |
4019 | bfd_vma adjust; | |
4020 | ||
252b5132 | 4021 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 | 4022 | align = bed->maxpagesize; |
252b5132 RH |
4023 | else |
4024 | { | |
b301b248 | 4025 | unsigned int align_power = 0; |
252b5132 RH |
4026 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4027 | { | |
b301b248 | 4028 | unsigned int secalign; |
252b5132 RH |
4029 | |
4030 | secalign = bfd_get_section_alignment (abfd, *secpp); | |
b301b248 AM |
4031 | if (secalign > align_power) |
4032 | align_power = secalign; | |
252b5132 | 4033 | } |
b301b248 AM |
4034 | align = (bfd_size_type) 1 << align_power; |
4035 | } | |
252b5132 | 4036 | |
b301b248 AM |
4037 | adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align); |
4038 | off += adjust; | |
4039 | if (adjust != 0 | |
4040 | && !m->includes_filehdr | |
4041 | && !m->includes_phdrs | |
4042 | && (ufile_ptr) off >= align) | |
4043 | { | |
4044 | /* If the first section isn't loadable, the same holds for | |
4045 | any other sections. Since the segment won't need file | |
4046 | space, we can make p_offset overlap some prior segment. | |
4047 | However, .tbss is special. If a segment starts with | |
4048 | .tbss, we need to look at the next section to decide | |
4049 | whether the segment has any loadable sections. */ | |
4050 | i = 0; | |
5efb6261 | 4051 | while ((m->sections[i]->flags & SEC_LOAD) == 0) |
b301b248 AM |
4052 | { |
4053 | if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0 | |
4054 | || ++i >= m->count) | |
4055 | { | |
4056 | off -= adjust; | |
4057 | voff = adjust - align; | |
4058 | break; | |
4059 | } | |
4060 | } | |
252b5132 RH |
4061 | } |
4062 | } | |
b1a6d0b1 NC |
4063 | /* Make sure the .dynamic section is the first section in the |
4064 | PT_DYNAMIC segment. */ | |
4065 | else if (p->p_type == PT_DYNAMIC | |
4066 | && m->count > 1 | |
4067 | && strcmp (m->sections[0]->name, ".dynamic") != 0) | |
4068 | { | |
4069 | _bfd_error_handler | |
b301b248 AM |
4070 | (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"), |
4071 | abfd); | |
b1a6d0b1 NC |
4072 | bfd_set_error (bfd_error_bad_value); |
4073 | return FALSE; | |
4074 | } | |
252b5132 RH |
4075 | |
4076 | if (m->count == 0) | |
4077 | p->p_vaddr = 0; | |
4078 | else | |
4079 | p->p_vaddr = m->sections[0]->vma; | |
4080 | ||
4081 | if (m->p_paddr_valid) | |
4082 | p->p_paddr = m->p_paddr; | |
4083 | else if (m->count == 0) | |
4084 | p->p_paddr = 0; | |
4085 | else | |
4086 | p->p_paddr = m->sections[0]->lma; | |
4087 | ||
4088 | if (p->p_type == PT_LOAD | |
4089 | && (abfd->flags & D_PAGED) != 0) | |
4090 | p->p_align = bed->maxpagesize; | |
4091 | else if (m->count == 0) | |
45d6a902 | 4092 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
4093 | else |
4094 | p->p_align = 0; | |
4095 | ||
4096 | p->p_offset = 0; | |
4097 | p->p_filesz = 0; | |
4098 | p->p_memsz = 0; | |
4099 | ||
4100 | if (m->includes_filehdr) | |
4101 | { | |
4102 | if (! m->p_flags_valid) | |
4103 | p->p_flags |= PF_R; | |
4104 | p->p_offset = 0; | |
4105 | p->p_filesz = bed->s->sizeof_ehdr; | |
4106 | p->p_memsz = bed->s->sizeof_ehdr; | |
4107 | if (m->count > 0) | |
4108 | { | |
4109 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4110 | ||
4111 | if (p->p_vaddr < (bfd_vma) off) | |
4112 | { | |
caf47ea6 | 4113 | (*_bfd_error_handler) |
b301b248 AM |
4114 | (_("%B: Not enough room for program headers, try linking with -N"), |
4115 | abfd); | |
252b5132 | 4116 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4117 | return FALSE; |
252b5132 RH |
4118 | } |
4119 | ||
4120 | p->p_vaddr -= off; | |
4121 | if (! m->p_paddr_valid) | |
4122 | p->p_paddr -= off; | |
4123 | } | |
4124 | if (p->p_type == PT_LOAD) | |
4125 | { | |
4126 | filehdr_vaddr = p->p_vaddr; | |
4127 | filehdr_paddr = p->p_paddr; | |
4128 | } | |
4129 | } | |
4130 | ||
4131 | if (m->includes_phdrs) | |
4132 | { | |
4133 | if (! m->p_flags_valid) | |
4134 | p->p_flags |= PF_R; | |
4135 | ||
4136 | if (m->includes_filehdr) | |
4137 | { | |
4138 | if (p->p_type == PT_LOAD) | |
4139 | { | |
4140 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
4141 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
4142 | } | |
4143 | } | |
4144 | else | |
4145 | { | |
4146 | p->p_offset = bed->s->sizeof_ehdr; | |
4147 | ||
4148 | if (m->count > 0) | |
4149 | { | |
4150 | BFD_ASSERT (p->p_type == PT_LOAD); | |
4151 | p->p_vaddr -= off - p->p_offset; | |
4152 | if (! m->p_paddr_valid) | |
4153 | p->p_paddr -= off - p->p_offset; | |
4154 | } | |
4155 | ||
4156 | if (p->p_type == PT_LOAD) | |
4157 | { | |
4158 | phdrs_vaddr = p->p_vaddr; | |
4159 | phdrs_paddr = p->p_paddr; | |
4160 | } | |
4161 | else | |
4162 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
4163 | } | |
4164 | ||
4165 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
4166 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
4167 | } | |
4168 | ||
4169 | if (p->p_type == PT_LOAD | |
4170 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
4171 | { | |
4172 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
b301b248 | 4173 | p->p_offset = off + voff; |
252b5132 RH |
4174 | else |
4175 | { | |
4176 | file_ptr adjust; | |
4177 | ||
4178 | adjust = off - (p->p_offset + p->p_filesz); | |
4179 | p->p_filesz += adjust; | |
4180 | p->p_memsz += adjust; | |
4181 | } | |
4182 | } | |
4183 | ||
252b5132 RH |
4184 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
4185 | { | |
4186 | asection *sec; | |
4187 | flagword flags; | |
4188 | bfd_size_type align; | |
4189 | ||
4190 | sec = *secpp; | |
4191 | flags = sec->flags; | |
4192 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
4193 | ||
b301b248 AM |
4194 | if (p->p_type == PT_LOAD |
4195 | || p->p_type == PT_TLS) | |
252b5132 RH |
4196 | { |
4197 | bfd_signed_vma adjust; | |
4198 | ||
5efb6261 | 4199 | if ((flags & SEC_LOAD) != 0) |
252b5132 | 4200 | { |
b301b248 | 4201 | adjust = sec->lma - (p->p_paddr + p->p_filesz); |
252b5132 | 4202 | if (adjust < 0) |
b301b248 AM |
4203 | { |
4204 | (*_bfd_error_handler) | |
4205 | (_("%B: section %A lma 0x%lx overlaps previous sections"), | |
4206 | abfd, sec, (unsigned long) sec->lma); | |
4207 | adjust = 0; | |
4208 | } | |
4209 | off += adjust; | |
4210 | p->p_filesz += adjust; | |
4211 | p->p_memsz += adjust; | |
252b5132 | 4212 | } |
b301b248 AM |
4213 | /* .tbss is special. It doesn't contribute to p_memsz of |
4214 | normal segments. */ | |
4215 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4216 | || p->p_type == PT_TLS) | |
252b5132 RH |
4217 | { |
4218 | /* The section VMA must equal the file position | |
b301b248 AM |
4219 | modulo the page size. */ |
4220 | bfd_size_type page = align; | |
252b5132 | 4221 | if ((abfd->flags & D_PAGED) != 0) |
b301b248 AM |
4222 | page = bed->maxpagesize; |
4223 | adjust = vma_page_aligned_bias (sec->vma, | |
4224 | p->p_vaddr + p->p_memsz, | |
4225 | page); | |
252b5132 | 4226 | p->p_memsz += adjust; |
252b5132 | 4227 | } |
252b5132 RH |
4228 | } |
4229 | ||
4230 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4231 | { | |
b301b248 AM |
4232 | /* The section at i == 0 is the one that actually contains |
4233 | everything. */ | |
4a938328 MS |
4234 | if (i == 0) |
4235 | { | |
252b5132 | 4236 | sec->filepos = off; |
eea6121a | 4237 | off += sec->size; |
b301b248 AM |
4238 | p->p_filesz = sec->size; |
4239 | p->p_memsz = 0; | |
4240 | p->p_align = 1; | |
252b5132 | 4241 | } |
4a938328 | 4242 | else |
252b5132 | 4243 | { |
b301b248 | 4244 | /* The rest are fake sections that shouldn't be written. */ |
252b5132 | 4245 | sec->filepos = 0; |
eea6121a | 4246 | sec->size = 0; |
b301b248 AM |
4247 | sec->flags = 0; |
4248 | continue; | |
252b5132 | 4249 | } |
252b5132 RH |
4250 | } |
4251 | else | |
4252 | { | |
b301b248 AM |
4253 | if (p->p_type == PT_LOAD) |
4254 | { | |
4255 | sec->filepos = off; | |
5efb6261 AM |
4256 | /* FIXME: The SEC_HAS_CONTENTS test here dates back to |
4257 | 1997, and the exact reason for it isn't clear. One | |
4258 | plausible explanation is that it is to work around | |
4259 | a problem we have with linker scripts using data | |
4260 | statements in NOLOAD sections. I don't think it | |
4261 | makes a great deal of sense to have such a section | |
4262 | assigned to a PT_LOAD segment, but apparently | |
4263 | people do this. The data statement results in a | |
4264 | bfd_data_link_order being built, and these need | |
4265 | section contents to write into. Eventually, we get | |
4266 | to _bfd_elf_write_object_contents which writes any | |
4267 | section with contents to the output. Make room | |
4268 | here for the write, so that following segments are | |
4269 | not trashed. */ | |
4270 | if ((flags & SEC_LOAD) != 0 | |
4271 | || (flags & SEC_HAS_CONTENTS) != 0) | |
b301b248 AM |
4272 | off += sec->size; |
4273 | } | |
252b5132 | 4274 | |
5efb6261 | 4275 | if ((flags & SEC_LOAD) != 0) |
b301b248 AM |
4276 | { |
4277 | p->p_filesz += sec->size; | |
4278 | p->p_memsz += sec->size; | |
4279 | } | |
4b6c0f2f NC |
4280 | /* PR ld/594: Sections in note segments which are not loaded |
4281 | contribute to the file size but not the in-memory size. */ | |
4282 | else if (p->p_type == PT_NOTE | |
4283 | && (flags & SEC_HAS_CONTENTS) != 0) | |
4284 | p->p_filesz += sec->size; | |
4285 | ||
b301b248 AM |
4286 | /* .tbss is special. It doesn't contribute to p_memsz of |
4287 | normal segments. */ | |
4288 | else if ((flags & SEC_THREAD_LOCAL) == 0 | |
4289 | || p->p_type == PT_TLS) | |
4290 | p->p_memsz += sec->size; | |
252b5132 | 4291 | |
13ae64f3 | 4292 | if (p->p_type == PT_TLS |
eea6121a | 4293 | && sec->size == 0 |
13ae64f3 JJ |
4294 | && (sec->flags & SEC_HAS_CONTENTS) == 0) |
4295 | { | |
4296 | struct bfd_link_order *o; | |
4297 | bfd_vma tbss_size = 0; | |
4298 | ||
4299 | for (o = sec->link_order_head; o != NULL; o = o->next) | |
4300 | if (tbss_size < o->offset + o->size) | |
4301 | tbss_size = o->offset + o->size; | |
4302 | ||
4303 | p->p_memsz += tbss_size; | |
4304 | } | |
4305 | ||
252b5132 RH |
4306 | if (align > p->p_align |
4307 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4308 | p->p_align = align; | |
4309 | } | |
4310 | ||
4311 | if (! m->p_flags_valid) | |
4312 | { | |
4313 | p->p_flags |= PF_R; | |
4314 | if ((flags & SEC_CODE) != 0) | |
4315 | p->p_flags |= PF_X; | |
4316 | if ((flags & SEC_READONLY) == 0) | |
4317 | p->p_flags |= PF_W; | |
4318 | } | |
4319 | } | |
4320 | } | |
4321 | ||
4322 | /* Now that we have set the section file positions, we can set up | |
4323 | the file positions for the non PT_LOAD segments. */ | |
4324 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4325 | m != NULL; | |
4326 | m = m->next, p++) | |
4327 | { | |
4328 | if (p->p_type != PT_LOAD && m->count > 0) | |
4329 | { | |
4330 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
229fcec5 MM |
4331 | /* If the section has not yet been assigned a file position, |
4332 | do so now. The ARM BPABI requires that .dynamic section | |
4333 | not be marked SEC_ALLOC because it is not part of any | |
4334 | PT_LOAD segment, so it will not be processed above. */ | |
4335 | if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0) | |
4336 | { | |
4337 | unsigned int i; | |
4338 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
4339 | ||
4340 | i = 1; | |
4341 | while (i_shdrpp[i]->bfd_section != m->sections[0]) | |
4342 | ++i; | |
4343 | off = (_bfd_elf_assign_file_position_for_section | |
4344 | (i_shdrpp[i], off, TRUE)); | |
4345 | p->p_filesz = m->sections[0]->size; | |
4346 | } | |
252b5132 RH |
4347 | p->p_offset = m->sections[0]->filepos; |
4348 | } | |
4349 | if (m->count == 0) | |
4350 | { | |
4351 | if (m->includes_filehdr) | |
4352 | { | |
4353 | p->p_vaddr = filehdr_vaddr; | |
4354 | if (! m->p_paddr_valid) | |
4355 | p->p_paddr = filehdr_paddr; | |
4356 | } | |
4357 | else if (m->includes_phdrs) | |
4358 | { | |
4359 | p->p_vaddr = phdrs_vaddr; | |
4360 | if (! m->p_paddr_valid) | |
4361 | p->p_paddr = phdrs_paddr; | |
4362 | } | |
8c37241b JJ |
4363 | else if (p->p_type == PT_GNU_RELRO) |
4364 | { | |
4365 | Elf_Internal_Phdr *lp; | |
4366 | ||
4367 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4368 | { | |
4369 | if (lp->p_type == PT_LOAD | |
4370 | && lp->p_vaddr <= link_info->relro_end | |
4371 | && lp->p_vaddr >= link_info->relro_start | |
4372 | && lp->p_vaddr + lp->p_filesz | |
4373 | >= link_info->relro_end) | |
4374 | break; | |
4375 | } | |
4376 | ||
4377 | if (lp < phdrs + count | |
4378 | && link_info->relro_end > lp->p_vaddr) | |
4379 | { | |
4380 | p->p_vaddr = lp->p_vaddr; | |
4381 | p->p_paddr = lp->p_paddr; | |
4382 | p->p_offset = lp->p_offset; | |
4383 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4384 | p->p_memsz = p->p_filesz; | |
4385 | p->p_align = 1; | |
4386 | p->p_flags = (lp->p_flags & ~PF_W); | |
4387 | } | |
4388 | else | |
4389 | { | |
4390 | memset (p, 0, sizeof *p); | |
4391 | p->p_type = PT_NULL; | |
4392 | } | |
4393 | } | |
252b5132 RH |
4394 | } |
4395 | } | |
4396 | ||
4397 | /* Clear out any program headers we allocated but did not use. */ | |
4398 | for (; count < alloc; count++, p++) | |
4399 | { | |
4400 | memset (p, 0, sizeof *p); | |
4401 | p->p_type = PT_NULL; | |
4402 | } | |
4403 | ||
4404 | elf_tdata (abfd)->phdr = phdrs; | |
4405 | ||
4406 | elf_tdata (abfd)->next_file_pos = off; | |
4407 | ||
4408 | /* Write out the program headers. */ | |
dc810e39 | 4409 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4410 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4411 | return FALSE; |
252b5132 | 4412 | |
b34976b6 | 4413 | return TRUE; |
252b5132 RH |
4414 | } |
4415 | ||
4416 | /* Get the size of the program header. | |
4417 | ||
4418 | If this is called by the linker before any of the section VMA's are set, it | |
4419 | can't calculate the correct value for a strange memory layout. This only | |
4420 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4421 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4422 | data segment (exclusive of .interp and .dynamic). | |
4423 | ||
4424 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4425 | will be two segments. */ | |
4426 | ||
4427 | static bfd_size_type | |
217aa764 | 4428 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4429 | { |
4430 | size_t segs; | |
4431 | asection *s; | |
9c5bfbb7 | 4432 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4433 | |
4434 | /* We can't return a different result each time we're called. */ | |
4435 | if (elf_tdata (abfd)->program_header_size != 0) | |
4436 | return elf_tdata (abfd)->program_header_size; | |
4437 | ||
4438 | if (elf_tdata (abfd)->segment_map != NULL) | |
4439 | { | |
4440 | struct elf_segment_map *m; | |
4441 | ||
4442 | segs = 0; | |
4443 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4444 | ++segs; | |
4445 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4446 | return elf_tdata (abfd)->program_header_size; | |
4447 | } | |
4448 | ||
4449 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4450 | and one for data. */ | |
4451 | segs = 2; | |
4452 | ||
4453 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4454 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4455 | { | |
4456 | /* If we have a loadable interpreter section, we need a | |
4457 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4458 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4459 | targets. */ |
4460 | segs += 2; | |
4461 | } | |
4462 | ||
4463 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4464 | { | |
4465 | /* We need a PT_DYNAMIC segment. */ | |
4466 | ++segs; | |
4467 | } | |
4468 | ||
126495ed | 4469 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4470 | { |
4471 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4472 | ++segs; | |
4473 | } | |
4474 | ||
9ee5e499 JJ |
4475 | if (elf_tdata (abfd)->stack_flags) |
4476 | { | |
4477 | /* We need a PT_GNU_STACK segment. */ | |
4478 | ++segs; | |
4479 | } | |
4480 | ||
8c37241b JJ |
4481 | if (elf_tdata (abfd)->relro) |
4482 | { | |
4483 | /* We need a PT_GNU_RELRO segment. */ | |
4484 | ++segs; | |
4485 | } | |
4486 | ||
252b5132 RH |
4487 | for (s = abfd->sections; s != NULL; s = s->next) |
4488 | { | |
4489 | if ((s->flags & SEC_LOAD) != 0 | |
4490 | && strncmp (s->name, ".note", 5) == 0) | |
4491 | { | |
4492 | /* We need a PT_NOTE segment. */ | |
4493 | ++segs; | |
4494 | } | |
4495 | } | |
4496 | ||
13ae64f3 JJ |
4497 | for (s = abfd->sections; s != NULL; s = s->next) |
4498 | { | |
4499 | if (s->flags & SEC_THREAD_LOCAL) | |
4500 | { | |
4501 | /* We need a PT_TLS segment. */ | |
4502 | ++segs; | |
4503 | break; | |
4504 | } | |
4505 | } | |
4506 | ||
252b5132 RH |
4507 | /* Let the backend count up any program headers it might need. */ |
4508 | if (bed->elf_backend_additional_program_headers) | |
4509 | { | |
4510 | int a; | |
4511 | ||
4512 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4513 | if (a == -1) | |
4514 | abort (); | |
4515 | segs += a; | |
4516 | } | |
4517 | ||
4518 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4519 | return elf_tdata (abfd)->program_header_size; | |
4520 | } | |
4521 | ||
4522 | /* Work out the file positions of all the sections. This is called by | |
4523 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4524 | VMAs must be known before this is called. | |
4525 | ||
e0638f70 AM |
4526 | Reloc sections come in two flavours: Those processed specially as |
4527 | "side-channel" data attached to a section to which they apply, and | |
4528 | those that bfd doesn't process as relocations. The latter sort are | |
4529 | stored in a normal bfd section by bfd_section_from_shdr. We don't | |
4530 | consider the former sort here, unless they form part of the loadable | |
4531 | image. Reloc sections not assigned here will be handled later by | |
4532 | assign_file_positions_for_relocs. | |
252b5132 RH |
4533 | |
4534 | We also don't set the positions of the .symtab and .strtab here. */ | |
4535 | ||
b34976b6 | 4536 | static bfd_boolean |
c84fca4d AO |
4537 | assign_file_positions_except_relocs (bfd *abfd, |
4538 | struct bfd_link_info *link_info) | |
252b5132 RH |
4539 | { |
4540 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4541 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4542 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4543 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4544 | file_ptr off; |
9c5bfbb7 | 4545 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4546 | |
4547 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4548 | && bfd_get_format (abfd) != bfd_core) | |
4549 | { | |
4550 | Elf_Internal_Shdr **hdrpp; | |
4551 | unsigned int i; | |
4552 | ||
4553 | /* Start after the ELF header. */ | |
4554 | off = i_ehdrp->e_ehsize; | |
4555 | ||
4556 | /* We are not creating an executable, which means that we are | |
4557 | not creating a program header, and that the actual order of | |
4558 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4559 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4560 | { |
4561 | Elf_Internal_Shdr *hdr; | |
4562 | ||
4563 | hdr = *hdrpp; | |
e0638f70 AM |
4564 | if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4565 | && hdr->bfd_section == NULL) | |
9ad5cbcf AM |
4566 | || i == tdata->symtab_section |
4567 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4568 | || i == tdata->strtab_section) |
4569 | { | |
4570 | hdr->sh_offset = -1; | |
252b5132 | 4571 | } |
9ad5cbcf | 4572 | else |
b34976b6 | 4573 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4574 | |
9ad5cbcf AM |
4575 | if (i == SHN_LORESERVE - 1) |
4576 | { | |
4577 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4578 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4579 | } | |
252b5132 RH |
4580 | } |
4581 | } | |
4582 | else | |
4583 | { | |
4584 | unsigned int i; | |
4585 | Elf_Internal_Shdr **hdrpp; | |
4586 | ||
4587 | /* Assign file positions for the loaded sections based on the | |
4588 | assignment of sections to segments. */ | |
c84fca4d | 4589 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4590 | return FALSE; |
252b5132 RH |
4591 | |
4592 | /* Assign file positions for the other sections. */ | |
4593 | ||
4594 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4595 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4596 | { |
4597 | Elf_Internal_Shdr *hdr; | |
4598 | ||
4599 | hdr = *hdrpp; | |
4600 | if (hdr->bfd_section != NULL | |
4601 | && hdr->bfd_section->filepos != 0) | |
4602 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4603 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4604 | { | |
4605 | ((*_bfd_error_handler) | |
b301b248 AM |
4606 | (_("%B: warning: allocated section `%s' not in segment"), |
4607 | abfd, | |
252b5132 RH |
4608 | (hdr->bfd_section == NULL |
4609 | ? "*unknown*" | |
4610 | : hdr->bfd_section->name))); | |
4611 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4612 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4613 | bed->maxpagesize); | |
252b5132 | 4614 | else |
340b6d91 AC |
4615 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4616 | hdr->sh_addralign); | |
252b5132 | 4617 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4618 | FALSE); |
252b5132 | 4619 | } |
e0638f70 AM |
4620 | else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) |
4621 | && hdr->bfd_section == NULL) | |
252b5132 | 4622 | || hdr == i_shdrpp[tdata->symtab_section] |
9ad5cbcf | 4623 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4624 | || hdr == i_shdrpp[tdata->strtab_section]) |
4625 | hdr->sh_offset = -1; | |
4626 | else | |
b34976b6 | 4627 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4628 | |
4629 | if (i == SHN_LORESERVE - 1) | |
4630 | { | |
4631 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4632 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4633 | } | |
252b5132 RH |
4634 | } |
4635 | } | |
4636 | ||
4637 | /* Place the section headers. */ | |
45d6a902 | 4638 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4639 | i_ehdrp->e_shoff = off; |
4640 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4641 | ||
4642 | elf_tdata (abfd)->next_file_pos = off; | |
4643 | ||
b34976b6 | 4644 | return TRUE; |
252b5132 RH |
4645 | } |
4646 | ||
b34976b6 | 4647 | static bfd_boolean |
217aa764 | 4648 | prep_headers (bfd *abfd) |
252b5132 RH |
4649 | { |
4650 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4651 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4652 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4653 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4654 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4655 | |
4656 | i_ehdrp = elf_elfheader (abfd); | |
4657 | i_shdrp = elf_elfsections (abfd); | |
4658 | ||
2b0f7ef9 | 4659 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4660 | if (shstrtab == NULL) |
b34976b6 | 4661 | return FALSE; |
252b5132 RH |
4662 | |
4663 | elf_shstrtab (abfd) = shstrtab; | |
4664 | ||
4665 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4666 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4667 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4668 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4669 | ||
4670 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4671 | i_ehdrp->e_ident[EI_DATA] = | |
4672 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4673 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4674 | ||
252b5132 RH |
4675 | if ((abfd->flags & DYNAMIC) != 0) |
4676 | i_ehdrp->e_type = ET_DYN; | |
4677 | else if ((abfd->flags & EXEC_P) != 0) | |
4678 | i_ehdrp->e_type = ET_EXEC; | |
4679 | else if (bfd_get_format (abfd) == bfd_core) | |
4680 | i_ehdrp->e_type = ET_CORE; | |
4681 | else | |
4682 | i_ehdrp->e_type = ET_REL; | |
4683 | ||
4684 | switch (bfd_get_arch (abfd)) | |
4685 | { | |
4686 | case bfd_arch_unknown: | |
4687 | i_ehdrp->e_machine = EM_NONE; | |
4688 | break; | |
aa4f99bb AO |
4689 | |
4690 | /* There used to be a long list of cases here, each one setting | |
4691 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4692 | in the corresponding bfd definition. To avoid duplication, | |
4693 | the switch was removed. Machines that need special handling | |
4694 | can generally do it in elf_backend_final_write_processing(), | |
4695 | unless they need the information earlier than the final write. | |
4696 | Such need can generally be supplied by replacing the tests for | |
4697 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4698 | default: |
9c5bfbb7 AM |
4699 | i_ehdrp->e_machine = bed->elf_machine_code; |
4700 | } | |
aa4f99bb | 4701 | |
252b5132 RH |
4702 | i_ehdrp->e_version = bed->s->ev_current; |
4703 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4704 | ||
c044fabd | 4705 | /* No program header, for now. */ |
252b5132 RH |
4706 | i_ehdrp->e_phoff = 0; |
4707 | i_ehdrp->e_phentsize = 0; | |
4708 | i_ehdrp->e_phnum = 0; | |
4709 | ||
c044fabd | 4710 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4711 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4712 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4713 | ||
c044fabd | 4714 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 | 4715 | if (abfd->flags & EXEC_P) |
0e71e495 BE |
4716 | /* It all happens later. */ |
4717 | ; | |
252b5132 RH |
4718 | else |
4719 | { | |
4720 | i_ehdrp->e_phentsize = 0; | |
4721 | i_phdrp = 0; | |
4722 | i_ehdrp->e_phoff = 0; | |
4723 | } | |
4724 | ||
4725 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4726 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4727 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4728 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4729 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4730 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4731 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4732 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4733 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4734 | return FALSE; |
252b5132 | 4735 | |
b34976b6 | 4736 | return TRUE; |
252b5132 RH |
4737 | } |
4738 | ||
4739 | /* Assign file positions for all the reloc sections which are not part | |
4740 | of the loadable file image. */ | |
4741 | ||
4742 | void | |
217aa764 | 4743 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4744 | { |
4745 | file_ptr off; | |
9ad5cbcf | 4746 | unsigned int i, num_sec; |
252b5132 RH |
4747 | Elf_Internal_Shdr **shdrpp; |
4748 | ||
4749 | off = elf_tdata (abfd)->next_file_pos; | |
4750 | ||
9ad5cbcf AM |
4751 | num_sec = elf_numsections (abfd); |
4752 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4753 | { |
4754 | Elf_Internal_Shdr *shdrp; | |
4755 | ||
4756 | shdrp = *shdrpp; | |
4757 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4758 | && shdrp->sh_offset == -1) | |
b34976b6 | 4759 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4760 | } |
4761 | ||
4762 | elf_tdata (abfd)->next_file_pos = off; | |
4763 | } | |
4764 | ||
b34976b6 | 4765 | bfd_boolean |
217aa764 | 4766 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4767 | { |
9c5bfbb7 | 4768 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4769 | Elf_Internal_Ehdr *i_ehdrp; |
4770 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4771 | bfd_boolean failed; |
9ad5cbcf | 4772 | unsigned int count, num_sec; |
252b5132 RH |
4773 | |
4774 | if (! abfd->output_has_begun | |
217aa764 | 4775 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4776 | return FALSE; |
252b5132 RH |
4777 | |
4778 | i_shdrp = elf_elfsections (abfd); | |
4779 | i_ehdrp = elf_elfheader (abfd); | |
4780 | ||
b34976b6 | 4781 | failed = FALSE; |
252b5132 RH |
4782 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4783 | if (failed) | |
b34976b6 | 4784 | return FALSE; |
252b5132 RH |
4785 | |
4786 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4787 | ||
c044fabd | 4788 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4789 | num_sec = elf_numsections (abfd); |
4790 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4791 | { |
4792 | if (bed->elf_backend_section_processing) | |
4793 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4794 | if (i_shdrp[count]->contents) | |
4795 | { | |
dc810e39 AM |
4796 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4797 | ||
252b5132 | 4798 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4799 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4800 | return FALSE; |
252b5132 | 4801 | } |
9ad5cbcf AM |
4802 | if (count == SHN_LORESERVE - 1) |
4803 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4804 | } |
4805 | ||
4806 | /* Write out the section header names. */ | |
4807 | if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
2b0f7ef9 | 4808 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))) |
b34976b6 | 4809 | return FALSE; |
252b5132 RH |
4810 | |
4811 | if (bed->elf_backend_final_write_processing) | |
4812 | (*bed->elf_backend_final_write_processing) (abfd, | |
4813 | elf_tdata (abfd)->linker); | |
4814 | ||
4815 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4816 | } | |
4817 | ||
b34976b6 | 4818 | bfd_boolean |
217aa764 | 4819 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4820 | { |
c044fabd | 4821 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4822 | return _bfd_elf_write_object_contents (abfd); |
4823 | } | |
c044fabd KH |
4824 | |
4825 | /* Given a section, search the header to find them. */ | |
4826 | ||
252b5132 | 4827 | int |
198beae2 | 4828 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4829 | { |
9c5bfbb7 | 4830 | const struct elf_backend_data *bed; |
252b5132 | 4831 | int index; |
252b5132 | 4832 | |
9ad5cbcf AM |
4833 | if (elf_section_data (asect) != NULL |
4834 | && elf_section_data (asect)->this_idx != 0) | |
4835 | return elf_section_data (asect)->this_idx; | |
4836 | ||
4837 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4838 | index = SHN_ABS; |
4839 | else if (bfd_is_com_section (asect)) | |
4840 | index = SHN_COMMON; | |
4841 | else if (bfd_is_und_section (asect)) | |
4842 | index = SHN_UNDEF; | |
4843 | else | |
6dc132d9 | 4844 | index = -1; |
252b5132 | 4845 | |
af746e92 | 4846 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4847 | if (bed->elf_backend_section_from_bfd_section) |
4848 | { | |
af746e92 | 4849 | int retval = index; |
9ad5cbcf | 4850 | |
af746e92 AM |
4851 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4852 | return retval; | |
252b5132 RH |
4853 | } |
4854 | ||
af746e92 AM |
4855 | if (index == -1) |
4856 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4857 | |
af746e92 | 4858 | return index; |
252b5132 RH |
4859 | } |
4860 | ||
4861 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4862 | on error. */ | |
4863 | ||
4864 | int | |
217aa764 | 4865 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4866 | { |
4867 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4868 | int idx; | |
4869 | flagword flags = asym_ptr->flags; | |
4870 | ||
4871 | /* When gas creates relocations against local labels, it creates its | |
4872 | own symbol for the section, but does put the symbol into the | |
4873 | symbol chain, so udata is 0. When the linker is generating | |
4874 | relocatable output, this section symbol may be for one of the | |
4875 | input sections rather than the output section. */ | |
4876 | if (asym_ptr->udata.i == 0 | |
4877 | && (flags & BSF_SECTION_SYM) | |
4878 | && asym_ptr->section) | |
4879 | { | |
4880 | int indx; | |
4881 | ||
4882 | if (asym_ptr->section->output_section != NULL) | |
4883 | indx = asym_ptr->section->output_section->index; | |
4884 | else | |
4885 | indx = asym_ptr->section->index; | |
4e89ac30 L |
4886 | if (indx < elf_num_section_syms (abfd) |
4887 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
4888 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
4889 | } | |
4890 | ||
4891 | idx = asym_ptr->udata.i; | |
4892 | ||
4893 | if (idx == 0) | |
4894 | { | |
4895 | /* This case can occur when using --strip-symbol on a symbol | |
4896 | which is used in a relocation entry. */ | |
4897 | (*_bfd_error_handler) | |
d003868e AM |
4898 | (_("%B: symbol `%s' required but not present"), |
4899 | abfd, bfd_asymbol_name (asym_ptr)); | |
252b5132 RH |
4900 | bfd_set_error (bfd_error_no_symbols); |
4901 | return -1; | |
4902 | } | |
4903 | ||
4904 | #if DEBUG & 4 | |
4905 | { | |
4906 | fprintf (stderr, | |
661a3fd4 | 4907 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
4908 | (long) asym_ptr, asym_ptr->name, idx, flags, |
4909 | elf_symbol_flags (flags)); | |
4910 | fflush (stderr); | |
4911 | } | |
4912 | #endif | |
4913 | ||
4914 | return idx; | |
4915 | } | |
4916 | ||
4917 | /* Copy private BFD data. This copies any program header information. */ | |
4918 | ||
b34976b6 | 4919 | static bfd_boolean |
217aa764 | 4920 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 4921 | { |
b34976b6 AM |
4922 | Elf_Internal_Ehdr *iehdr; |
4923 | struct elf_segment_map *map; | |
4924 | struct elf_segment_map *map_first; | |
4925 | struct elf_segment_map **pointer_to_map; | |
4926 | Elf_Internal_Phdr *segment; | |
4927 | asection *section; | |
4928 | unsigned int i; | |
4929 | unsigned int num_segments; | |
4930 | bfd_boolean phdr_included = FALSE; | |
4931 | bfd_vma maxpagesize; | |
4932 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
4933 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 4934 | const struct elf_backend_data *bed; |
bc67d8a6 | 4935 | |
c044fabd | 4936 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 4937 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 4938 | return TRUE; |
252b5132 RH |
4939 | |
4940 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 4941 | return TRUE; |
252b5132 | 4942 | |
caf47ea6 | 4943 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
4944 | iehdr = elf_elfheader (ibfd); |
4945 | ||
bc67d8a6 | 4946 | map_first = NULL; |
c044fabd | 4947 | pointer_to_map = &map_first; |
252b5132 RH |
4948 | |
4949 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
4950 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
4951 | ||
4952 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
4953 | #define SEGMENT_END(segment, start) \ |
4954 | (start + (segment->p_memsz > segment->p_filesz \ | |
4955 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 4956 | |
eecdbe52 JJ |
4957 | #define SECTION_SIZE(section, segment) \ |
4958 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
4959 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
eea6121a | 4960 | ? section->size : 0) |
eecdbe52 | 4961 | |
b34976b6 | 4962 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4963 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
4964 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
4965 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 4966 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4967 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 4968 | |
b34976b6 | 4969 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4970 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
4971 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
4972 | (section->lma >= base \ | |
eecdbe52 | 4973 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4974 | <= SEGMENT_END (segment, base))) |
252b5132 | 4975 | |
c044fabd | 4976 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
4977 | #define IS_COREFILE_NOTE(p, s) \ |
4978 | (p->p_type == PT_NOTE \ | |
4979 | && bfd_get_format (ibfd) == bfd_core \ | |
4980 | && s->vma == 0 && s->lma == 0 \ | |
4981 | && (bfd_vma) s->filepos >= p->p_offset \ | |
eea6121a | 4982 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 4983 | <= p->p_offset + p->p_filesz)) |
252b5132 RH |
4984 | |
4985 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
4986 | linker, which generates a PT_INTERP section with p_vaddr and | |
4987 | p_memsz set to 0. */ | |
aecc8f8a AM |
4988 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
4989 | (p->p_vaddr == 0 \ | |
4990 | && p->p_paddr == 0 \ | |
4991 | && p->p_memsz == 0 \ | |
4992 | && p->p_filesz > 0 \ | |
4993 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
eea6121a | 4994 | && s->size > 0 \ |
aecc8f8a | 4995 | && (bfd_vma) s->filepos >= p->p_offset \ |
eea6121a | 4996 | && ((bfd_vma) s->filepos + s->size \ |
aecc8f8a | 4997 | <= p->p_offset + p->p_filesz)) |
5c440b1e | 4998 | |
bc67d8a6 NC |
4999 | /* Decide if the given section should be included in the given segment. |
5000 | A section will be included if: | |
f5ffc919 NC |
5001 | 1. It is within the address space of the segment -- we use the LMA |
5002 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
5003 | 2. It is an allocated segment, |
5004 | 3. There is an output section associated with it, | |
eecdbe52 | 5005 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
5006 | 5. PT_GNU_STACK segments do not include any sections. |
5007 | 6. PT_TLS segment includes only SHF_TLS sections. | |
6f79b219 JJ |
5008 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
5009 | 8. PT_DYNAMIC should not contain empty sections at the beginning | |
5010 | (with the possible exception of .dynamic). */ | |
caf47ea6 | 5011 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
5012 | ((((segment->p_paddr \ |
5013 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
5014 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 5015 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 5016 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 5017 | && section->output_section != NULL \ |
03394ac9 | 5018 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
5019 | && (segment->p_type != PT_TLS \ |
5020 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
5021 | && (segment->p_type == PT_LOAD \ | |
5022 | || segment->p_type == PT_TLS \ | |
5023 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
6f79b219 JJ |
5024 | && (segment->p_type != PT_DYNAMIC \ |
5025 | || SECTION_SIZE (section, segment) > 0 \ | |
5026 | || (segment->p_paddr \ | |
5027 | ? segment->p_paddr != section->lma \ | |
5028 | : segment->p_vaddr != section->vma) \ | |
5029 | || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \ | |
5030 | == 0)) \ | |
82e51918 | 5031 | && ! section->segment_mark) |
bc67d8a6 | 5032 | |
b34976b6 | 5033 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
5034 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
5035 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
5036 | ||
5037 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
5038 | their VMA address ranges and their LMA address ranges overlap. | |
5039 | It is possible to have overlapping VMA ranges without overlapping LMA | |
5040 | ranges. RedBoot images for example can have both .data and .bss mapped | |
5041 | to the same VMA range, but with the .data section mapped to a different | |
5042 | LMA. */ | |
aecc8f8a | 5043 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
5044 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
5045 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
5046 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
5047 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
5048 | |
5049 | /* Initialise the segment mark field. */ | |
5050 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 5051 | section->segment_mark = FALSE; |
bc67d8a6 | 5052 | |
252b5132 | 5053 | /* Scan through the segments specified in the program header |
bc67d8a6 | 5054 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 5055 | in the loadable segments. These can be created by weird |
aecc8f8a | 5056 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
5057 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
5058 | i < num_segments; | |
c044fabd | 5059 | i++, segment++) |
252b5132 | 5060 | { |
252b5132 | 5061 | unsigned int j; |
c044fabd | 5062 | Elf_Internal_Phdr *segment2; |
252b5132 | 5063 | |
aecc8f8a AM |
5064 | if (segment->p_type == PT_INTERP) |
5065 | for (section = ibfd->sections; section; section = section->next) | |
5066 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
5067 | { | |
5068 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 5069 | assignment code will work. */ |
aecc8f8a AM |
5070 | segment->p_vaddr = section->vma; |
5071 | break; | |
5072 | } | |
5073 | ||
bc67d8a6 NC |
5074 | if (segment->p_type != PT_LOAD) |
5075 | continue; | |
c044fabd | 5076 | |
bc67d8a6 | 5077 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 5078 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
5079 | { |
5080 | bfd_signed_vma extra_length; | |
c044fabd | 5081 | |
bc67d8a6 NC |
5082 | if (segment2->p_type != PT_LOAD |
5083 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
5084 | continue; | |
c044fabd | 5085 | |
bc67d8a6 NC |
5086 | /* Merge the two segments together. */ |
5087 | if (segment2->p_vaddr < segment->p_vaddr) | |
5088 | { | |
c044fabd KH |
5089 | /* Extend SEGMENT2 to include SEGMENT and then delete |
5090 | SEGMENT. */ | |
bc67d8a6 NC |
5091 | extra_length = |
5092 | SEGMENT_END (segment, segment->p_vaddr) | |
5093 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 5094 | |
bc67d8a6 NC |
5095 | if (extra_length > 0) |
5096 | { | |
5097 | segment2->p_memsz += extra_length; | |
5098 | segment2->p_filesz += extra_length; | |
5099 | } | |
c044fabd | 5100 | |
bc67d8a6 | 5101 | segment->p_type = PT_NULL; |
c044fabd | 5102 | |
bc67d8a6 NC |
5103 | /* Since we have deleted P we must restart the outer loop. */ |
5104 | i = 0; | |
5105 | segment = elf_tdata (ibfd)->phdr; | |
5106 | break; | |
5107 | } | |
5108 | else | |
5109 | { | |
c044fabd KH |
5110 | /* Extend SEGMENT to include SEGMENT2 and then delete |
5111 | SEGMENT2. */ | |
bc67d8a6 NC |
5112 | extra_length = |
5113 | SEGMENT_END (segment2, segment2->p_vaddr) | |
5114 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 5115 | |
bc67d8a6 NC |
5116 | if (extra_length > 0) |
5117 | { | |
5118 | segment->p_memsz += extra_length; | |
5119 | segment->p_filesz += extra_length; | |
5120 | } | |
c044fabd | 5121 | |
bc67d8a6 NC |
5122 | segment2->p_type = PT_NULL; |
5123 | } | |
5124 | } | |
5125 | } | |
c044fabd | 5126 | |
bc67d8a6 NC |
5127 | /* The second scan attempts to assign sections to segments. */ |
5128 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
5129 | i < num_segments; | |
5130 | i ++, segment ++) | |
5131 | { | |
5132 | unsigned int section_count; | |
5133 | asection ** sections; | |
5134 | asection * output_section; | |
5135 | unsigned int isec; | |
5136 | bfd_vma matching_lma; | |
5137 | bfd_vma suggested_lma; | |
5138 | unsigned int j; | |
dc810e39 | 5139 | bfd_size_type amt; |
bc67d8a6 NC |
5140 | |
5141 | if (segment->p_type == PT_NULL) | |
5142 | continue; | |
c044fabd | 5143 | |
bc67d8a6 | 5144 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
5145 | for (section = ibfd->sections, section_count = 0; |
5146 | section != NULL; | |
5147 | section = section->next) | |
caf47ea6 | 5148 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 5149 | ++section_count; |
811072d8 | 5150 | |
b5f852ea NC |
5151 | /* Allocate a segment map big enough to contain |
5152 | all of the sections we have selected. */ | |
dc810e39 AM |
5153 | amt = sizeof (struct elf_segment_map); |
5154 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5155 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5156 | if (map == NULL) |
b34976b6 | 5157 | return FALSE; |
252b5132 RH |
5158 | |
5159 | /* Initialise the fields of the segment map. Default to | |
5160 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
5161 | map->next = NULL; |
5162 | map->p_type = segment->p_type; | |
5163 | map->p_flags = segment->p_flags; | |
5164 | map->p_flags_valid = 1; | |
5165 | map->p_paddr = segment->p_paddr; | |
5166 | map->p_paddr_valid = 1; | |
252b5132 RH |
5167 | |
5168 | /* Determine if this segment contains the ELF file header | |
5169 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
5170 | map->includes_filehdr = (segment->p_offset == 0 |
5171 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 5172 | |
bc67d8a6 | 5173 | map->includes_phdrs = 0; |
252b5132 | 5174 | |
bc67d8a6 | 5175 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 5176 | { |
bc67d8a6 NC |
5177 | map->includes_phdrs = |
5178 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
5179 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
5180 | >= ((bfd_vma) iehdr->e_phoff |
5181 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 5182 | |
bc67d8a6 | 5183 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 5184 | phdr_included = TRUE; |
252b5132 RH |
5185 | } |
5186 | ||
bc67d8a6 | 5187 | if (section_count == 0) |
252b5132 RH |
5188 | { |
5189 | /* Special segments, such as the PT_PHDR segment, may contain | |
5190 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
5191 | something. They are allowed by the ELF spec however, so only |
5192 | a warning is produced. */ | |
bc67d8a6 | 5193 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 5194 | (*_bfd_error_handler) |
d003868e AM |
5195 | (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"), |
5196 | ibfd); | |
252b5132 | 5197 | |
bc67d8a6 | 5198 | map->count = 0; |
c044fabd KH |
5199 | *pointer_to_map = map; |
5200 | pointer_to_map = &map->next; | |
252b5132 RH |
5201 | |
5202 | continue; | |
5203 | } | |
5204 | ||
5205 | /* Now scan the sections in the input BFD again and attempt | |
5206 | to add their corresponding output sections to the segment map. | |
5207 | The problem here is how to handle an output section which has | |
5208 | been moved (ie had its LMA changed). There are four possibilities: | |
5209 | ||
5210 | 1. None of the sections have been moved. | |
5211 | In this case we can continue to use the segment LMA from the | |
5212 | input BFD. | |
5213 | ||
5214 | 2. All of the sections have been moved by the same amount. | |
5215 | In this case we can change the segment's LMA to match the LMA | |
5216 | of the first section. | |
5217 | ||
5218 | 3. Some of the sections have been moved, others have not. | |
5219 | In this case those sections which have not been moved can be | |
5220 | placed in the current segment which will have to have its size, | |
5221 | and possibly its LMA changed, and a new segment or segments will | |
5222 | have to be created to contain the other sections. | |
5223 | ||
b5f852ea | 5224 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
5225 | In this case we can change the segment's LMA to match the LMA |
5226 | of the first section and we will have to create a new segment | |
5227 | or segments to contain the other sections. | |
5228 | ||
5229 | In order to save time, we allocate an array to hold the section | |
5230 | pointers that we are interested in. As these sections get assigned | |
5231 | to a segment, they are removed from this array. */ | |
5232 | ||
0b14c2aa L |
5233 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
5234 | to work around this long long bug. */ | |
5235 | amt = section_count * sizeof (asection *); | |
217aa764 | 5236 | sections = bfd_malloc (amt); |
252b5132 | 5237 | if (sections == NULL) |
b34976b6 | 5238 | return FALSE; |
252b5132 RH |
5239 | |
5240 | /* Step One: Scan for segment vs section LMA conflicts. | |
5241 | Also add the sections to the section array allocated above. | |
5242 | Also add the sections to the current segment. In the common | |
5243 | case, where the sections have not been moved, this means that | |
5244 | we have completely filled the segment, and there is nothing | |
5245 | more to do. */ | |
252b5132 | 5246 | isec = 0; |
72730e0c | 5247 | matching_lma = 0; |
252b5132 RH |
5248 | suggested_lma = 0; |
5249 | ||
bc67d8a6 NC |
5250 | for (j = 0, section = ibfd->sections; |
5251 | section != NULL; | |
5252 | section = section->next) | |
252b5132 | 5253 | { |
caf47ea6 | 5254 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5255 | { |
bc67d8a6 NC |
5256 | output_section = section->output_section; |
5257 | ||
5258 | sections[j ++] = section; | |
252b5132 RH |
5259 | |
5260 | /* The Solaris native linker always sets p_paddr to 0. | |
5261 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5262 | correct value. Note - some backends require that |
5263 | p_paddr be left as zero. */ | |
bc67d8a6 | 5264 | if (segment->p_paddr == 0 |
4455705d | 5265 | && segment->p_vaddr != 0 |
5e8d7549 | 5266 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5267 | && isec == 0 |
bc67d8a6 NC |
5268 | && output_section->lma != 0 |
5269 | && (output_section->vma == (segment->p_vaddr | |
5270 | + (map->includes_filehdr | |
5271 | ? iehdr->e_ehsize | |
5272 | : 0) | |
5273 | + (map->includes_phdrs | |
079e9a2f AM |
5274 | ? (iehdr->e_phnum |
5275 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5276 | : 0)))) |
5277 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5278 | |
5279 | /* Match up the physical address of the segment with the | |
5280 | LMA address of the output section. */ | |
bc67d8a6 | 5281 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5282 | || IS_COREFILE_NOTE (segment, section) |
5283 | || (bed->want_p_paddr_set_to_zero && | |
5284 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5285 | ) | |
252b5132 RH |
5286 | { |
5287 | if (matching_lma == 0) | |
bc67d8a6 | 5288 | matching_lma = output_section->lma; |
252b5132 RH |
5289 | |
5290 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5291 | then it does not overlap any other section within that |
252b5132 | 5292 | segment. */ |
bc67d8a6 | 5293 | map->sections[isec ++] = output_section; |
252b5132 RH |
5294 | } |
5295 | else if (suggested_lma == 0) | |
bc67d8a6 | 5296 | suggested_lma = output_section->lma; |
252b5132 RH |
5297 | } |
5298 | } | |
5299 | ||
bc67d8a6 | 5300 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5301 | |
5302 | /* Step Two: Adjust the physical address of the current segment, | |
5303 | if necessary. */ | |
bc67d8a6 | 5304 | if (isec == section_count) |
252b5132 RH |
5305 | { |
5306 | /* All of the sections fitted within the segment as currently | |
5307 | specified. This is the default case. Add the segment to | |
5308 | the list of built segments and carry on to process the next | |
5309 | program header in the input BFD. */ | |
bc67d8a6 | 5310 | map->count = section_count; |
c044fabd KH |
5311 | *pointer_to_map = map; |
5312 | pointer_to_map = &map->next; | |
252b5132 RH |
5313 | |
5314 | free (sections); | |
5315 | continue; | |
5316 | } | |
252b5132 RH |
5317 | else |
5318 | { | |
72730e0c AM |
5319 | if (matching_lma != 0) |
5320 | { | |
5321 | /* At least one section fits inside the current segment. | |
5322 | Keep it, but modify its physical address to match the | |
5323 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5324 | map->p_paddr = matching_lma; |
72730e0c AM |
5325 | } |
5326 | else | |
5327 | { | |
5328 | /* None of the sections fitted inside the current segment. | |
5329 | Change the current segment's physical address to match | |
5330 | the LMA of the first section. */ | |
bc67d8a6 | 5331 | map->p_paddr = suggested_lma; |
72730e0c AM |
5332 | } |
5333 | ||
bc67d8a6 NC |
5334 | /* Offset the segment physical address from the lma |
5335 | to allow for space taken up by elf headers. */ | |
5336 | if (map->includes_filehdr) | |
5337 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5338 | |
bc67d8a6 NC |
5339 | if (map->includes_phdrs) |
5340 | { | |
5341 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5342 | ||
5343 | /* iehdr->e_phnum is just an estimate of the number | |
5344 | of program headers that we will need. Make a note | |
5345 | here of the number we used and the segment we chose | |
5346 | to hold these headers, so that we can adjust the | |
5347 | offset when we know the correct value. */ | |
5348 | phdr_adjust_num = iehdr->e_phnum; | |
5349 | phdr_adjust_seg = map; | |
5350 | } | |
252b5132 RH |
5351 | } |
5352 | ||
5353 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5354 | those that fit to the current segment and removing them from the |
252b5132 RH |
5355 | sections array; but making sure not to leave large gaps. Once all |
5356 | possible sections have been assigned to the current segment it is | |
5357 | added to the list of built segments and if sections still remain | |
5358 | to be assigned, a new segment is constructed before repeating | |
5359 | the loop. */ | |
5360 | isec = 0; | |
5361 | do | |
5362 | { | |
bc67d8a6 | 5363 | map->count = 0; |
252b5132 RH |
5364 | suggested_lma = 0; |
5365 | ||
5366 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5367 | for (j = 0; j < section_count; j++) |
252b5132 | 5368 | { |
bc67d8a6 | 5369 | section = sections[j]; |
252b5132 | 5370 | |
bc67d8a6 | 5371 | if (section == NULL) |
252b5132 RH |
5372 | continue; |
5373 | ||
bc67d8a6 | 5374 | output_section = section->output_section; |
252b5132 | 5375 | |
bc67d8a6 | 5376 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5377 | |
bc67d8a6 NC |
5378 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5379 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5380 | { |
bc67d8a6 | 5381 | if (map->count == 0) |
252b5132 RH |
5382 | { |
5383 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5384 | the beginning of the segment, then something is |
5385 | wrong. */ | |
5386 | if (output_section->lma != | |
5387 | (map->p_paddr | |
5388 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5389 | + (map->includes_phdrs | |
5390 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5391 | : 0))) | |
252b5132 RH |
5392 | abort (); |
5393 | } | |
5394 | else | |
5395 | { | |
5396 | asection * prev_sec; | |
252b5132 | 5397 | |
bc67d8a6 | 5398 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5399 | |
5400 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5401 | and the start of this section is more than |
5402 | maxpagesize then we need to start a new segment. */ | |
eea6121a | 5403 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->size, |
079e9a2f | 5404 | maxpagesize) |
caf47ea6 | 5405 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
eea6121a | 5406 | || ((prev_sec->lma + prev_sec->size) |
079e9a2f | 5407 | > output_section->lma)) |
252b5132 RH |
5408 | { |
5409 | if (suggested_lma == 0) | |
bc67d8a6 | 5410 | suggested_lma = output_section->lma; |
252b5132 RH |
5411 | |
5412 | continue; | |
5413 | } | |
5414 | } | |
5415 | ||
bc67d8a6 | 5416 | map->sections[map->count++] = output_section; |
252b5132 RH |
5417 | ++isec; |
5418 | sections[j] = NULL; | |
b34976b6 | 5419 | section->segment_mark = TRUE; |
252b5132 RH |
5420 | } |
5421 | else if (suggested_lma == 0) | |
bc67d8a6 | 5422 | suggested_lma = output_section->lma; |
252b5132 RH |
5423 | } |
5424 | ||
bc67d8a6 | 5425 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5426 | |
5427 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5428 | *pointer_to_map = map; |
5429 | pointer_to_map = &map->next; | |
252b5132 | 5430 | |
bc67d8a6 | 5431 | if (isec < section_count) |
252b5132 RH |
5432 | { |
5433 | /* We still have not allocated all of the sections to | |
5434 | segments. Create a new segment here, initialise it | |
5435 | and carry on looping. */ | |
dc810e39 AM |
5436 | amt = sizeof (struct elf_segment_map); |
5437 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5438 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5439 | if (map == NULL) |
5ed6aba4 NC |
5440 | { |
5441 | free (sections); | |
5442 | return FALSE; | |
5443 | } | |
252b5132 RH |
5444 | |
5445 | /* Initialise the fields of the segment map. Set the physical | |
5446 | physical address to the LMA of the first section that has | |
5447 | not yet been assigned. */ | |
bc67d8a6 NC |
5448 | map->next = NULL; |
5449 | map->p_type = segment->p_type; | |
5450 | map->p_flags = segment->p_flags; | |
5451 | map->p_flags_valid = 1; | |
5452 | map->p_paddr = suggested_lma; | |
5453 | map->p_paddr_valid = 1; | |
5454 | map->includes_filehdr = 0; | |
5455 | map->includes_phdrs = 0; | |
252b5132 RH |
5456 | } |
5457 | } | |
bc67d8a6 | 5458 | while (isec < section_count); |
252b5132 RH |
5459 | |
5460 | free (sections); | |
5461 | } | |
5462 | ||
5463 | /* The Solaris linker creates program headers in which all the | |
5464 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5465 | file, we get confused. Check for this case, and if we find it | |
5466 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5467 | for (map = map_first; map != NULL; map = map->next) |
5468 | if (map->p_paddr != 0) | |
252b5132 | 5469 | break; |
bc67d8a6 | 5470 | if (map == NULL) |
b5f852ea NC |
5471 | for (map = map_first; map != NULL; map = map->next) |
5472 | map->p_paddr_valid = 0; | |
252b5132 | 5473 | |
bc67d8a6 NC |
5474 | elf_tdata (obfd)->segment_map = map_first; |
5475 | ||
5476 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5477 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5478 | the offset if necessary. */ |
5479 | if (phdr_adjust_seg != NULL) | |
5480 | { | |
5481 | unsigned int count; | |
c044fabd | 5482 | |
bc67d8a6 | 5483 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5484 | count++; |
252b5132 | 5485 | |
bc67d8a6 NC |
5486 | if (count > phdr_adjust_num) |
5487 | phdr_adjust_seg->p_paddr | |
5488 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5489 | } | |
c044fabd | 5490 | |
bc67d8a6 | 5491 | #undef SEGMENT_END |
eecdbe52 | 5492 | #undef SECTION_SIZE |
bc67d8a6 NC |
5493 | #undef IS_CONTAINED_BY_VMA |
5494 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5495 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5496 | #undef IS_SOLARIS_PT_INTERP |
5497 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5498 | #undef SEGMENT_AFTER_SEGMENT | |
5499 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5500 | return TRUE; |
252b5132 RH |
5501 | } |
5502 | ||
5503 | /* Copy private section information. This copies over the entsize | |
5504 | field, and sometimes the info field. */ | |
5505 | ||
b34976b6 | 5506 | bfd_boolean |
217aa764 AM |
5507 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5508 | asection *isec, | |
5509 | bfd *obfd, | |
5510 | asection *osec) | |
252b5132 RH |
5511 | { |
5512 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5513 | ||
5514 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5515 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5516 | return TRUE; |
252b5132 | 5517 | |
252b5132 RH |
5518 | ihdr = &elf_section_data (isec)->this_hdr; |
5519 | ohdr = &elf_section_data (osec)->this_hdr; | |
5520 | ||
5521 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5522 | ||
5523 | if (ihdr->sh_type == SHT_SYMTAB | |
5524 | || ihdr->sh_type == SHT_DYNSYM | |
5525 | || ihdr->sh_type == SHT_GNU_verneed | |
5526 | || ihdr->sh_type == SHT_GNU_verdef) | |
5527 | ohdr->sh_info = ihdr->sh_info; | |
5528 | ||
9dce4196 AM |
5529 | /* Set things up for objcopy. The output SHT_GROUP section will |
5530 | have its elf_next_in_group pointing back to the input group | |
278d8f37 L |
5531 | members. Ignore linker created group section. See |
5532 | elfNN_ia64_object_p in elfxx-ia64.c. */ | |
5533 | if (elf_sec_group (isec) == NULL | |
5534 | || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0) | |
5535 | { | |
5536 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5537 | elf_group_name (osec) = elf_group_name (isec); | |
5538 | } | |
9dce4196 | 5539 | |
68bfbfcc | 5540 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5541 | |
b34976b6 | 5542 | return TRUE; |
252b5132 RH |
5543 | } |
5544 | ||
80fccad2 BW |
5545 | /* Copy private header information. */ |
5546 | ||
5547 | bfd_boolean | |
5548 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5549 | { | |
5550 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5551 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5552 | return TRUE; | |
5553 | ||
5554 | /* Copy over private BFD data if it has not already been copied. | |
5555 | This must be done here, rather than in the copy_private_bfd_data | |
5556 | entry point, because the latter is called after the section | |
5557 | contents have been set, which means that the program headers have | |
5558 | already been worked out. */ | |
5559 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5560 | { | |
5561 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5562 | return FALSE; | |
5563 | } | |
5564 | ||
5565 | return TRUE; | |
5566 | } | |
5567 | ||
252b5132 RH |
5568 | /* Copy private symbol information. If this symbol is in a section |
5569 | which we did not map into a BFD section, try to map the section | |
5570 | index correctly. We use special macro definitions for the mapped | |
5571 | section indices; these definitions are interpreted by the | |
5572 | swap_out_syms function. */ | |
5573 | ||
9ad5cbcf AM |
5574 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5575 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5576 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5577 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5578 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5579 | |
b34976b6 | 5580 | bfd_boolean |
217aa764 AM |
5581 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5582 | asymbol *isymarg, | |
5583 | bfd *obfd, | |
5584 | asymbol *osymarg) | |
252b5132 RH |
5585 | { |
5586 | elf_symbol_type *isym, *osym; | |
5587 | ||
5588 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5589 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5590 | return TRUE; |
252b5132 RH |
5591 | |
5592 | isym = elf_symbol_from (ibfd, isymarg); | |
5593 | osym = elf_symbol_from (obfd, osymarg); | |
5594 | ||
5595 | if (isym != NULL | |
5596 | && osym != NULL | |
5597 | && bfd_is_abs_section (isym->symbol.section)) | |
5598 | { | |
5599 | unsigned int shndx; | |
5600 | ||
5601 | shndx = isym->internal_elf_sym.st_shndx; | |
5602 | if (shndx == elf_onesymtab (ibfd)) | |
5603 | shndx = MAP_ONESYMTAB; | |
5604 | else if (shndx == elf_dynsymtab (ibfd)) | |
5605 | shndx = MAP_DYNSYMTAB; | |
5606 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5607 | shndx = MAP_STRTAB; | |
5608 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5609 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5610 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5611 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5612 | osym->internal_elf_sym.st_shndx = shndx; |
5613 | } | |
5614 | ||
b34976b6 | 5615 | return TRUE; |
252b5132 RH |
5616 | } |
5617 | ||
5618 | /* Swap out the symbols. */ | |
5619 | ||
b34976b6 | 5620 | static bfd_boolean |
217aa764 AM |
5621 | swap_out_syms (bfd *abfd, |
5622 | struct bfd_strtab_hash **sttp, | |
5623 | int relocatable_p) | |
252b5132 | 5624 | { |
9c5bfbb7 | 5625 | const struct elf_backend_data *bed; |
079e9a2f AM |
5626 | int symcount; |
5627 | asymbol **syms; | |
5628 | struct bfd_strtab_hash *stt; | |
5629 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5630 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f | 5631 | Elf_Internal_Shdr *symstrtab_hdr; |
f075ee0c AM |
5632 | bfd_byte *outbound_syms; |
5633 | bfd_byte *outbound_shndx; | |
079e9a2f AM |
5634 | int idx; |
5635 | bfd_size_type amt; | |
174fd7f9 | 5636 | bfd_boolean name_local_sections; |
252b5132 RH |
5637 | |
5638 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5639 | return FALSE; |
252b5132 | 5640 | |
c044fabd | 5641 | /* Dump out the symtabs. */ |
079e9a2f AM |
5642 | stt = _bfd_elf_stringtab_init (); |
5643 | if (stt == NULL) | |
b34976b6 | 5644 | return FALSE; |
252b5132 | 5645 | |
079e9a2f AM |
5646 | bed = get_elf_backend_data (abfd); |
5647 | symcount = bfd_get_symcount (abfd); | |
5648 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5649 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5650 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5651 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5652 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5653 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5654 | |
5655 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5656 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5657 | ||
5658 | amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; | |
5659 | outbound_syms = bfd_alloc (abfd, amt); | |
5660 | if (outbound_syms == NULL) | |
5ed6aba4 NC |
5661 | { |
5662 | _bfd_stringtab_free (stt); | |
5663 | return FALSE; | |
5664 | } | |
217aa764 | 5665 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5666 | |
9ad5cbcf AM |
5667 | outbound_shndx = NULL; |
5668 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5669 | if (symtab_shndx_hdr->sh_name != 0) | |
5670 | { | |
5671 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
1126897b | 5672 | outbound_shndx = bfd_zalloc (abfd, amt); |
9ad5cbcf | 5673 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5674 | { |
5675 | _bfd_stringtab_free (stt); | |
5676 | return FALSE; | |
5677 | } | |
5678 | ||
9ad5cbcf AM |
5679 | symtab_shndx_hdr->contents = outbound_shndx; |
5680 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5681 | symtab_shndx_hdr->sh_size = amt; | |
5682 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5683 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5684 | } | |
5685 | ||
589e6347 | 5686 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5687 | { |
5688 | /* Fill in zeroth symbol and swap it out. */ | |
5689 | Elf_Internal_Sym sym; | |
5690 | sym.st_name = 0; | |
5691 | sym.st_value = 0; | |
5692 | sym.st_size = 0; | |
5693 | sym.st_info = 0; | |
5694 | sym.st_other = 0; | |
5695 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5696 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5697 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5698 | if (outbound_shndx != NULL) |
5699 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5700 | } |
252b5132 | 5701 | |
174fd7f9 RS |
5702 | name_local_sections |
5703 | = (bed->elf_backend_name_local_section_symbols | |
5704 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5705 | ||
079e9a2f AM |
5706 | syms = bfd_get_outsymbols (abfd); |
5707 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5708 | { |
252b5132 | 5709 | Elf_Internal_Sym sym; |
079e9a2f AM |
5710 | bfd_vma value = syms[idx]->value; |
5711 | elf_symbol_type *type_ptr; | |
5712 | flagword flags = syms[idx]->flags; | |
5713 | int type; | |
252b5132 | 5714 | |
174fd7f9 RS |
5715 | if (!name_local_sections |
5716 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5717 | { |
5718 | /* Local section symbols have no name. */ | |
5719 | sym.st_name = 0; | |
5720 | } | |
5721 | else | |
5722 | { | |
5723 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5724 | syms[idx]->name, | |
b34976b6 | 5725 | TRUE, FALSE); |
079e9a2f | 5726 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5727 | { |
5728 | _bfd_stringtab_free (stt); | |
5729 | return FALSE; | |
5730 | } | |
079e9a2f | 5731 | } |
252b5132 | 5732 | |
079e9a2f | 5733 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5734 | |
079e9a2f AM |
5735 | if ((flags & BSF_SECTION_SYM) == 0 |
5736 | && bfd_is_com_section (syms[idx]->section)) | |
5737 | { | |
5738 | /* ELF common symbols put the alignment into the `value' field, | |
5739 | and the size into the `size' field. This is backwards from | |
5740 | how BFD handles it, so reverse it here. */ | |
5741 | sym.st_size = value; | |
5742 | if (type_ptr == NULL | |
5743 | || type_ptr->internal_elf_sym.st_value == 0) | |
5744 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5745 | else | |
5746 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5747 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5748 | (abfd, syms[idx]->section); | |
5749 | } | |
5750 | else | |
5751 | { | |
5752 | asection *sec = syms[idx]->section; | |
5753 | int shndx; | |
252b5132 | 5754 | |
079e9a2f AM |
5755 | if (sec->output_section) |
5756 | { | |
5757 | value += sec->output_offset; | |
5758 | sec = sec->output_section; | |
5759 | } | |
589e6347 | 5760 | |
079e9a2f AM |
5761 | /* Don't add in the section vma for relocatable output. */ |
5762 | if (! relocatable_p) | |
5763 | value += sec->vma; | |
5764 | sym.st_value = value; | |
5765 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5766 | ||
5767 | if (bfd_is_abs_section (sec) | |
5768 | && type_ptr != NULL | |
5769 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5770 | { | |
5771 | /* This symbol is in a real ELF section which we did | |
5772 | not create as a BFD section. Undo the mapping done | |
5773 | by copy_private_symbol_data. */ | |
5774 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5775 | switch (shndx) | |
5776 | { | |
5777 | case MAP_ONESYMTAB: | |
5778 | shndx = elf_onesymtab (abfd); | |
5779 | break; | |
5780 | case MAP_DYNSYMTAB: | |
5781 | shndx = elf_dynsymtab (abfd); | |
5782 | break; | |
5783 | case MAP_STRTAB: | |
5784 | shndx = elf_tdata (abfd)->strtab_section; | |
5785 | break; | |
5786 | case MAP_SHSTRTAB: | |
5787 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5788 | break; | |
9ad5cbcf AM |
5789 | case MAP_SYM_SHNDX: |
5790 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5791 | break; | |
079e9a2f AM |
5792 | default: |
5793 | break; | |
5794 | } | |
5795 | } | |
5796 | else | |
5797 | { | |
5798 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5799 | |
079e9a2f AM |
5800 | if (shndx == -1) |
5801 | { | |
5802 | asection *sec2; | |
5803 | ||
5804 | /* Writing this would be a hell of a lot easier if | |
5805 | we had some decent documentation on bfd, and | |
5806 | knew what to expect of the library, and what to | |
5807 | demand of applications. For example, it | |
5808 | appears that `objcopy' might not set the | |
5809 | section of a symbol to be a section that is | |
5810 | actually in the output file. */ | |
5811 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5812 | if (sec2 == NULL) |
5813 | { | |
5814 | _bfd_error_handler (_("\ | |
5815 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5816 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5817 | sec->name); | |
811072d8 | 5818 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5819 | _bfd_stringtab_free (stt); |
589e6347 NC |
5820 | return FALSE; |
5821 | } | |
811072d8 | 5822 | |
079e9a2f AM |
5823 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5824 | BFD_ASSERT (shndx != -1); | |
5825 | } | |
5826 | } | |
252b5132 | 5827 | |
079e9a2f AM |
5828 | sym.st_shndx = shndx; |
5829 | } | |
252b5132 | 5830 | |
13ae64f3 JJ |
5831 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5832 | type = STT_TLS; | |
5833 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5834 | type = STT_FUNC; |
5835 | else if ((flags & BSF_OBJECT) != 0) | |
5836 | type = STT_OBJECT; | |
5837 | else | |
5838 | type = STT_NOTYPE; | |
252b5132 | 5839 | |
13ae64f3 JJ |
5840 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5841 | type = STT_TLS; | |
5842 | ||
589e6347 | 5843 | /* Processor-specific types. */ |
079e9a2f AM |
5844 | if (type_ptr != NULL |
5845 | && bed->elf_backend_get_symbol_type) | |
5846 | type = ((*bed->elf_backend_get_symbol_type) | |
5847 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5848 | |
079e9a2f AM |
5849 | if (flags & BSF_SECTION_SYM) |
5850 | { | |
5851 | if (flags & BSF_GLOBAL) | |
5852 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5853 | else | |
5854 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
5855 | } | |
5856 | else if (bfd_is_com_section (syms[idx]->section)) | |
5857 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
5858 | else if (bfd_is_und_section (syms[idx]->section)) | |
5859 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
5860 | ? STB_WEAK | |
5861 | : STB_GLOBAL), | |
5862 | type); | |
5863 | else if (flags & BSF_FILE) | |
5864 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
5865 | else | |
5866 | { | |
5867 | int bind = STB_LOCAL; | |
252b5132 | 5868 | |
079e9a2f AM |
5869 | if (flags & BSF_LOCAL) |
5870 | bind = STB_LOCAL; | |
5871 | else if (flags & BSF_WEAK) | |
5872 | bind = STB_WEAK; | |
5873 | else if (flags & BSF_GLOBAL) | |
5874 | bind = STB_GLOBAL; | |
252b5132 | 5875 | |
079e9a2f AM |
5876 | sym.st_info = ELF_ST_INFO (bind, type); |
5877 | } | |
252b5132 | 5878 | |
079e9a2f AM |
5879 | if (type_ptr != NULL) |
5880 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
5881 | else | |
5882 | sym.st_other = 0; | |
252b5132 | 5883 | |
9ad5cbcf | 5884 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5885 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5886 | if (outbound_shndx != NULL) |
5887 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5888 | } |
252b5132 | 5889 | |
079e9a2f AM |
5890 | *sttp = stt; |
5891 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
5892 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 5893 | |
079e9a2f AM |
5894 | symstrtab_hdr->sh_flags = 0; |
5895 | symstrtab_hdr->sh_addr = 0; | |
5896 | symstrtab_hdr->sh_entsize = 0; | |
5897 | symstrtab_hdr->sh_link = 0; | |
5898 | symstrtab_hdr->sh_info = 0; | |
5899 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 5900 | |
b34976b6 | 5901 | return TRUE; |
252b5132 RH |
5902 | } |
5903 | ||
5904 | /* Return the number of bytes required to hold the symtab vector. | |
5905 | ||
5906 | Note that we base it on the count plus 1, since we will null terminate | |
5907 | the vector allocated based on this size. However, the ELF symbol table | |
5908 | always has a dummy entry as symbol #0, so it ends up even. */ | |
5909 | ||
5910 | long | |
217aa764 | 5911 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
5912 | { |
5913 | long symcount; | |
5914 | long symtab_size; | |
5915 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
5916 | ||
5917 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
5918 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
5919 | if (symcount > 0) | |
5920 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
5921 | |
5922 | return symtab_size; | |
5923 | } | |
5924 | ||
5925 | long | |
217aa764 | 5926 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
5927 | { |
5928 | long symcount; | |
5929 | long symtab_size; | |
5930 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
5931 | ||
5932 | if (elf_dynsymtab (abfd) == 0) | |
5933 | { | |
5934 | bfd_set_error (bfd_error_invalid_operation); | |
5935 | return -1; | |
5936 | } | |
5937 | ||
5938 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
5939 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
5940 | if (symcount > 0) | |
5941 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
5942 | |
5943 | return symtab_size; | |
5944 | } | |
5945 | ||
5946 | long | |
217aa764 AM |
5947 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
5948 | sec_ptr asect) | |
252b5132 RH |
5949 | { |
5950 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
5951 | } | |
5952 | ||
5953 | /* Canonicalize the relocs. */ | |
5954 | ||
5955 | long | |
217aa764 AM |
5956 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
5957 | sec_ptr section, | |
5958 | arelent **relptr, | |
5959 | asymbol **symbols) | |
252b5132 RH |
5960 | { |
5961 | arelent *tblptr; | |
5962 | unsigned int i; | |
9c5bfbb7 | 5963 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 5964 | |
b34976b6 | 5965 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
5966 | return -1; |
5967 | ||
5968 | tblptr = section->relocation; | |
5969 | for (i = 0; i < section->reloc_count; i++) | |
5970 | *relptr++ = tblptr++; | |
5971 | ||
5972 | *relptr = NULL; | |
5973 | ||
5974 | return section->reloc_count; | |
5975 | } | |
5976 | ||
5977 | long | |
6cee3f79 | 5978 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 5979 | { |
9c5bfbb7 | 5980 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 5981 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
5982 | |
5983 | if (symcount >= 0) | |
5984 | bfd_get_symcount (abfd) = symcount; | |
5985 | return symcount; | |
5986 | } | |
5987 | ||
5988 | long | |
217aa764 AM |
5989 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
5990 | asymbol **allocation) | |
252b5132 | 5991 | { |
9c5bfbb7 | 5992 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 5993 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
5994 | |
5995 | if (symcount >= 0) | |
5996 | bfd_get_dynamic_symcount (abfd) = symcount; | |
5997 | return symcount; | |
252b5132 RH |
5998 | } |
5999 | ||
8615f3f2 AM |
6000 | /* Return the size required for the dynamic reloc entries. Any loadable |
6001 | section that was actually installed in the BFD, and has type SHT_REL | |
6002 | or SHT_RELA, and uses the dynamic symbol table, is considered to be a | |
6003 | dynamic reloc section. */ | |
252b5132 RH |
6004 | |
6005 | long | |
217aa764 | 6006 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
6007 | { |
6008 | long ret; | |
6009 | asection *s; | |
6010 | ||
6011 | if (elf_dynsymtab (abfd) == 0) | |
6012 | { | |
6013 | bfd_set_error (bfd_error_invalid_operation); | |
6014 | return -1; | |
6015 | } | |
6016 | ||
6017 | ret = sizeof (arelent *); | |
6018 | for (s = abfd->sections; s != NULL; s = s->next) | |
8615f3f2 AM |
6019 | if ((s->flags & SEC_LOAD) != 0 |
6020 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6021 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6022 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
eea6121a | 6023 | ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize) |
252b5132 RH |
6024 | * sizeof (arelent *)); |
6025 | ||
6026 | return ret; | |
6027 | } | |
6028 | ||
8615f3f2 AM |
6029 | /* Canonicalize the dynamic relocation entries. Note that we return the |
6030 | dynamic relocations as a single block, although they are actually | |
6031 | associated with particular sections; the interface, which was | |
6032 | designed for SunOS style shared libraries, expects that there is only | |
6033 | one set of dynamic relocs. Any loadable section that was actually | |
6034 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the | |
6035 | dynamic symbol table, is considered to be a dynamic reloc section. */ | |
252b5132 RH |
6036 | |
6037 | long | |
217aa764 AM |
6038 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
6039 | arelent **storage, | |
6040 | asymbol **syms) | |
252b5132 | 6041 | { |
217aa764 | 6042 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
6043 | asection *s; |
6044 | long ret; | |
6045 | ||
6046 | if (elf_dynsymtab (abfd) == 0) | |
6047 | { | |
6048 | bfd_set_error (bfd_error_invalid_operation); | |
6049 | return -1; | |
6050 | } | |
6051 | ||
6052 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
6053 | ret = 0; | |
6054 | for (s = abfd->sections; s != NULL; s = s->next) | |
6055 | { | |
8615f3f2 AM |
6056 | if ((s->flags & SEC_LOAD) != 0 |
6057 | && elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
252b5132 RH |
6058 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
6059 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
6060 | { | |
6061 | arelent *p; | |
6062 | long count, i; | |
6063 | ||
b34976b6 | 6064 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 | 6065 | return -1; |
eea6121a | 6066 | count = s->size / elf_section_data (s)->this_hdr.sh_entsize; |
252b5132 RH |
6067 | p = s->relocation; |
6068 | for (i = 0; i < count; i++) | |
6069 | *storage++ = p++; | |
6070 | ret += count; | |
6071 | } | |
6072 | } | |
6073 | ||
6074 | *storage = NULL; | |
6075 | ||
6076 | return ret; | |
6077 | } | |
6078 | \f | |
6079 | /* Read in the version information. */ | |
6080 | ||
b34976b6 | 6081 | bfd_boolean |
fc0e6df6 | 6082 | _bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver) |
252b5132 RH |
6083 | { |
6084 | bfd_byte *contents = NULL; | |
dc810e39 | 6085 | bfd_size_type amt; |
fc0e6df6 PB |
6086 | unsigned int freeidx = 0; |
6087 | ||
6088 | if (elf_dynverref (abfd) != 0) | |
6089 | { | |
6090 | Elf_Internal_Shdr *hdr; | |
6091 | Elf_External_Verneed *everneed; | |
6092 | Elf_Internal_Verneed *iverneed; | |
6093 | unsigned int i; | |
6094 | ||
6095 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
6096 | ||
6097 | amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); | |
6098 | elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); | |
6099 | if (elf_tdata (abfd)->verref == NULL) | |
6100 | goto error_return; | |
6101 | ||
6102 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
6103 | ||
6104 | contents = bfd_malloc (hdr->sh_size); | |
6105 | if (contents == NULL) | |
6106 | goto error_return; | |
6107 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
6108 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) | |
6109 | goto error_return; | |
6110 | ||
6111 | everneed = (Elf_External_Verneed *) contents; | |
6112 | iverneed = elf_tdata (abfd)->verref; | |
6113 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
6114 | { | |
6115 | Elf_External_Vernaux *evernaux; | |
6116 | Elf_Internal_Vernaux *ivernaux; | |
6117 | unsigned int j; | |
6118 | ||
6119 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
6120 | ||
6121 | iverneed->vn_bfd = abfd; | |
6122 | ||
6123 | iverneed->vn_filename = | |
6124 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6125 | iverneed->vn_file); | |
6126 | if (iverneed->vn_filename == NULL) | |
6127 | goto error_return; | |
6128 | ||
6129 | amt = iverneed->vn_cnt; | |
6130 | amt *= sizeof (Elf_Internal_Vernaux); | |
6131 | iverneed->vn_auxptr = bfd_alloc (abfd, amt); | |
6132 | ||
6133 | evernaux = ((Elf_External_Vernaux *) | |
6134 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6135 | ivernaux = iverneed->vn_auxptr; | |
6136 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6137 | { | |
6138 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6139 | ||
6140 | ivernaux->vna_nodename = | |
6141 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6142 | ivernaux->vna_name); | |
6143 | if (ivernaux->vna_nodename == NULL) | |
6144 | goto error_return; | |
6145 | ||
6146 | if (j + 1 < iverneed->vn_cnt) | |
6147 | ivernaux->vna_nextptr = ivernaux + 1; | |
6148 | else | |
6149 | ivernaux->vna_nextptr = NULL; | |
6150 | ||
6151 | evernaux = ((Elf_External_Vernaux *) | |
6152 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6153 | ||
6154 | if (ivernaux->vna_other > freeidx) | |
6155 | freeidx = ivernaux->vna_other; | |
6156 | } | |
6157 | ||
6158 | if (i + 1 < hdr->sh_info) | |
6159 | iverneed->vn_nextref = iverneed + 1; | |
6160 | else | |
6161 | iverneed->vn_nextref = NULL; | |
6162 | ||
6163 | everneed = ((Elf_External_Verneed *) | |
6164 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6165 | } | |
6166 | ||
6167 | free (contents); | |
6168 | contents = NULL; | |
6169 | } | |
252b5132 RH |
6170 | |
6171 | if (elf_dynverdef (abfd) != 0) | |
6172 | { | |
6173 | Elf_Internal_Shdr *hdr; | |
6174 | Elf_External_Verdef *everdef; | |
6175 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
6176 | Elf_Internal_Verdef *iverdefarr; |
6177 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 6178 | unsigned int i; |
062e2358 | 6179 | unsigned int maxidx; |
252b5132 RH |
6180 | |
6181 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
6182 | ||
217aa764 | 6183 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
6184 | if (contents == NULL) |
6185 | goto error_return; | |
6186 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 6187 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
6188 | goto error_return; |
6189 | ||
f631889e UD |
6190 | /* We know the number of entries in the section but not the maximum |
6191 | index. Therefore we have to run through all entries and find | |
6192 | the maximum. */ | |
252b5132 | 6193 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
6194 | maxidx = 0; |
6195 | for (i = 0; i < hdr->sh_info; ++i) | |
6196 | { | |
6197 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
6198 | ||
062e2358 AM |
6199 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
6200 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e UD |
6201 | |
6202 | everdef = ((Elf_External_Verdef *) | |
6203 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
6204 | } | |
6205 | ||
fc0e6df6 PB |
6206 | if (default_imported_symver) |
6207 | { | |
6208 | if (freeidx > maxidx) | |
6209 | maxidx = ++freeidx; | |
6210 | else | |
6211 | freeidx = ++maxidx; | |
6212 | } | |
dc810e39 | 6213 | amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); |
217aa764 | 6214 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); |
f631889e UD |
6215 | if (elf_tdata (abfd)->verdef == NULL) |
6216 | goto error_return; | |
6217 | ||
6218 | elf_tdata (abfd)->cverdefs = maxidx; | |
6219 | ||
6220 | everdef = (Elf_External_Verdef *) contents; | |
6221 | iverdefarr = elf_tdata (abfd)->verdef; | |
6222 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
6223 | { |
6224 | Elf_External_Verdaux *everdaux; | |
6225 | Elf_Internal_Verdaux *iverdaux; | |
6226 | unsigned int j; | |
6227 | ||
f631889e UD |
6228 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
6229 | ||
6230 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; | |
6231 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
6232 | |
6233 | iverdef->vd_bfd = abfd; | |
6234 | ||
dc810e39 | 6235 | amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); |
217aa764 | 6236 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
6237 | if (iverdef->vd_auxptr == NULL) |
6238 | goto error_return; | |
6239 | ||
6240 | everdaux = ((Elf_External_Verdaux *) | |
6241 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
6242 | iverdaux = iverdef->vd_auxptr; | |
6243 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
6244 | { | |
6245 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
6246 | ||
6247 | iverdaux->vda_nodename = | |
6248 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6249 | iverdaux->vda_name); | |
6250 | if (iverdaux->vda_nodename == NULL) | |
6251 | goto error_return; | |
6252 | ||
6253 | if (j + 1 < iverdef->vd_cnt) | |
6254 | iverdaux->vda_nextptr = iverdaux + 1; | |
6255 | else | |
6256 | iverdaux->vda_nextptr = NULL; | |
6257 | ||
6258 | everdaux = ((Elf_External_Verdaux *) | |
6259 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
6260 | } | |
6261 | ||
6262 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
6263 | ||
6264 | if (i + 1 < hdr->sh_info) | |
6265 | iverdef->vd_nextdef = iverdef + 1; | |
6266 | else | |
6267 | iverdef->vd_nextdef = NULL; | |
6268 | ||
6269 | everdef = ((Elf_External_Verdef *) | |
6270 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
6271 | } | |
6272 | ||
6273 | free (contents); | |
6274 | contents = NULL; | |
6275 | } | |
fc0e6df6 | 6276 | else if (default_imported_symver) |
252b5132 | 6277 | { |
fc0e6df6 PB |
6278 | if (freeidx < 3) |
6279 | freeidx = 3; | |
6280 | else | |
6281 | freeidx++; | |
252b5132 | 6282 | |
fc0e6df6 PB |
6283 | amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef); |
6284 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); | |
6285 | if (elf_tdata (abfd)->verdef == NULL) | |
252b5132 RH |
6286 | goto error_return; |
6287 | ||
fc0e6df6 PB |
6288 | elf_tdata (abfd)->cverdefs = freeidx; |
6289 | } | |
252b5132 | 6290 | |
fc0e6df6 PB |
6291 | /* Create a default version based on the soname. */ |
6292 | if (default_imported_symver) | |
6293 | { | |
6294 | Elf_Internal_Verdef *iverdef; | |
6295 | Elf_Internal_Verdaux *iverdaux; | |
252b5132 | 6296 | |
fc0e6df6 | 6297 | iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];; |
252b5132 | 6298 | |
fc0e6df6 PB |
6299 | iverdef->vd_version = VER_DEF_CURRENT; |
6300 | iverdef->vd_flags = 0; | |
6301 | iverdef->vd_ndx = freeidx; | |
6302 | iverdef->vd_cnt = 1; | |
252b5132 | 6303 | |
fc0e6df6 | 6304 | iverdef->vd_bfd = abfd; |
252b5132 | 6305 | |
fc0e6df6 PB |
6306 | iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd); |
6307 | if (iverdef->vd_nodename == NULL) | |
6308 | goto error_return; | |
6309 | iverdef->vd_nextdef = NULL; | |
6310 | amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux); | |
6311 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); | |
252b5132 | 6312 | |
fc0e6df6 PB |
6313 | iverdaux = iverdef->vd_auxptr; |
6314 | iverdaux->vda_nodename = iverdef->vd_nodename; | |
6315 | iverdaux->vda_nextptr = NULL; | |
252b5132 RH |
6316 | } |
6317 | ||
b34976b6 | 6318 | return TRUE; |
252b5132 RH |
6319 | |
6320 | error_return: | |
5ed6aba4 | 6321 | if (contents != NULL) |
252b5132 | 6322 | free (contents); |
b34976b6 | 6323 | return FALSE; |
252b5132 RH |
6324 | } |
6325 | \f | |
6326 | asymbol * | |
217aa764 | 6327 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6328 | { |
6329 | elf_symbol_type *newsym; | |
dc810e39 | 6330 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6331 | |
217aa764 | 6332 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6333 | if (!newsym) |
6334 | return NULL; | |
6335 | else | |
6336 | { | |
6337 | newsym->symbol.the_bfd = abfd; | |
6338 | return &newsym->symbol; | |
6339 | } | |
6340 | } | |
6341 | ||
6342 | void | |
217aa764 AM |
6343 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6344 | asymbol *symbol, | |
6345 | symbol_info *ret) | |
252b5132 RH |
6346 | { |
6347 | bfd_symbol_info (symbol, ret); | |
6348 | } | |
6349 | ||
6350 | /* Return whether a symbol name implies a local symbol. Most targets | |
6351 | use this function for the is_local_label_name entry point, but some | |
6352 | override it. */ | |
6353 | ||
b34976b6 | 6354 | bfd_boolean |
217aa764 AM |
6355 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6356 | const char *name) | |
252b5132 RH |
6357 | { |
6358 | /* Normal local symbols start with ``.L''. */ | |
6359 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6360 | return TRUE; |
252b5132 RH |
6361 | |
6362 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6363 | DWARF debugging symbols starting with ``..''. */ | |
6364 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6365 | return TRUE; |
252b5132 RH |
6366 | |
6367 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6368 | emitting DWARF debugging output. I suspect this is actually a | |
6369 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6370 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6371 | underscore to be emitted on some ELF targets). For ease of use, | |
6372 | we treat such symbols as local. */ | |
6373 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6374 | return TRUE; |
252b5132 | 6375 | |
b34976b6 | 6376 | return FALSE; |
252b5132 RH |
6377 | } |
6378 | ||
6379 | alent * | |
217aa764 AM |
6380 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6381 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6382 | { |
6383 | abort (); | |
6384 | return NULL; | |
6385 | } | |
6386 | ||
b34976b6 | 6387 | bfd_boolean |
217aa764 AM |
6388 | _bfd_elf_set_arch_mach (bfd *abfd, |
6389 | enum bfd_architecture arch, | |
6390 | unsigned long machine) | |
252b5132 RH |
6391 | { |
6392 | /* If this isn't the right architecture for this backend, and this | |
6393 | isn't the generic backend, fail. */ | |
6394 | if (arch != get_elf_backend_data (abfd)->arch | |
6395 | && arch != bfd_arch_unknown | |
6396 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6397 | return FALSE; |
252b5132 RH |
6398 | |
6399 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6400 | } | |
6401 | ||
d1fad7c6 NC |
6402 | /* Find the function to a particular section and offset, |
6403 | for error reporting. */ | |
252b5132 | 6404 | |
b34976b6 | 6405 | static bfd_boolean |
217aa764 AM |
6406 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6407 | asection *section, | |
6408 | asymbol **symbols, | |
6409 | bfd_vma offset, | |
6410 | const char **filename_ptr, | |
6411 | const char **functionname_ptr) | |
252b5132 | 6412 | { |
252b5132 | 6413 | const char *filename; |
57426232 | 6414 | asymbol *func, *file; |
252b5132 RH |
6415 | bfd_vma low_func; |
6416 | asymbol **p; | |
57426232 JB |
6417 | /* ??? Given multiple file symbols, it is impossible to reliably |
6418 | choose the right file name for global symbols. File symbols are | |
6419 | local symbols, and thus all file symbols must sort before any | |
6420 | global symbols. The ELF spec may be interpreted to say that a | |
6421 | file symbol must sort before other local symbols, but currently | |
6422 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
6423 | make a better choice of file name for local symbols by ignoring | |
6424 | file symbols appearing after a given local symbol. */ | |
6425 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
252b5132 | 6426 | |
252b5132 RH |
6427 | filename = NULL; |
6428 | func = NULL; | |
57426232 | 6429 | file = NULL; |
252b5132 | 6430 | low_func = 0; |
57426232 | 6431 | state = nothing_seen; |
252b5132 RH |
6432 | |
6433 | for (p = symbols; *p != NULL; p++) | |
6434 | { | |
6435 | elf_symbol_type *q; | |
6436 | ||
6437 | q = (elf_symbol_type *) *p; | |
6438 | ||
252b5132 RH |
6439 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6440 | { | |
6441 | default: | |
6442 | break; | |
6443 | case STT_FILE: | |
57426232 JB |
6444 | file = &q->symbol; |
6445 | if (state == symbol_seen) | |
6446 | state = file_after_symbol_seen; | |
6447 | continue; | |
6448 | case STT_SECTION: | |
6449 | continue; | |
252b5132 RH |
6450 | case STT_NOTYPE: |
6451 | case STT_FUNC: | |
6b40fcba | 6452 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6453 | && q->symbol.value >= low_func |
6454 | && q->symbol.value <= offset) | |
6455 | { | |
6456 | func = (asymbol *) q; | |
6457 | low_func = q->symbol.value; | |
57426232 JB |
6458 | if (file == NULL) |
6459 | filename = NULL; | |
6460 | else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL | |
6461 | && state == file_after_symbol_seen) | |
6462 | filename = NULL; | |
6463 | else | |
6464 | filename = bfd_asymbol_name (file); | |
252b5132 RH |
6465 | } |
6466 | break; | |
6467 | } | |
57426232 JB |
6468 | if (state == nothing_seen) |
6469 | state = symbol_seen; | |
252b5132 RH |
6470 | } |
6471 | ||
6472 | if (func == NULL) | |
b34976b6 | 6473 | return FALSE; |
252b5132 | 6474 | |
d1fad7c6 NC |
6475 | if (filename_ptr) |
6476 | *filename_ptr = filename; | |
6477 | if (functionname_ptr) | |
6478 | *functionname_ptr = bfd_asymbol_name (func); | |
6479 | ||
b34976b6 | 6480 | return TRUE; |
d1fad7c6 NC |
6481 | } |
6482 | ||
6483 | /* Find the nearest line to a particular section and offset, | |
6484 | for error reporting. */ | |
6485 | ||
b34976b6 | 6486 | bfd_boolean |
217aa764 AM |
6487 | _bfd_elf_find_nearest_line (bfd *abfd, |
6488 | asection *section, | |
6489 | asymbol **symbols, | |
6490 | bfd_vma offset, | |
6491 | const char **filename_ptr, | |
6492 | const char **functionname_ptr, | |
6493 | unsigned int *line_ptr) | |
d1fad7c6 | 6494 | { |
b34976b6 | 6495 | bfd_boolean found; |
d1fad7c6 NC |
6496 | |
6497 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6498 | filename_ptr, functionname_ptr, |
6499 | line_ptr)) | |
d1fad7c6 NC |
6500 | { |
6501 | if (!*functionname_ptr) | |
4e8a9624 AM |
6502 | elf_find_function (abfd, section, symbols, offset, |
6503 | *filename_ptr ? NULL : filename_ptr, | |
6504 | functionname_ptr); | |
6505 | ||
b34976b6 | 6506 | return TRUE; |
d1fad7c6 NC |
6507 | } |
6508 | ||
6509 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6510 | filename_ptr, functionname_ptr, |
6511 | line_ptr, 0, | |
6512 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6513 | { |
6514 | if (!*functionname_ptr) | |
4e8a9624 AM |
6515 | elf_find_function (abfd, section, symbols, offset, |
6516 | *filename_ptr ? NULL : filename_ptr, | |
6517 | functionname_ptr); | |
6518 | ||
b34976b6 | 6519 | return TRUE; |
d1fad7c6 NC |
6520 | } |
6521 | ||
6522 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6523 | &found, filename_ptr, |
6524 | functionname_ptr, line_ptr, | |
6525 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6526 | return FALSE; |
dc43ada5 | 6527 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6528 | return TRUE; |
d1fad7c6 NC |
6529 | |
6530 | if (symbols == NULL) | |
b34976b6 | 6531 | return FALSE; |
d1fad7c6 NC |
6532 | |
6533 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6534 | filename_ptr, functionname_ptr)) |
b34976b6 | 6535 | return FALSE; |
d1fad7c6 | 6536 | |
252b5132 | 6537 | *line_ptr = 0; |
b34976b6 | 6538 | return TRUE; |
252b5132 RH |
6539 | } |
6540 | ||
6541 | int | |
217aa764 | 6542 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6543 | { |
6544 | int ret; | |
6545 | ||
6546 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6547 | if (! reloc) | |
6548 | ret += get_program_header_size (abfd); | |
6549 | return ret; | |
6550 | } | |
6551 | ||
b34976b6 | 6552 | bfd_boolean |
217aa764 AM |
6553 | _bfd_elf_set_section_contents (bfd *abfd, |
6554 | sec_ptr section, | |
0f867abe | 6555 | const void *location, |
217aa764 AM |
6556 | file_ptr offset, |
6557 | bfd_size_type count) | |
252b5132 RH |
6558 | { |
6559 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6560 | bfd_signed_vma pos; |
252b5132 RH |
6561 | |
6562 | if (! abfd->output_has_begun | |
217aa764 | 6563 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6564 | return FALSE; |
252b5132 RH |
6565 | |
6566 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6567 | pos = hdr->sh_offset + offset; |
6568 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6569 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6570 | return FALSE; |
252b5132 | 6571 | |
b34976b6 | 6572 | return TRUE; |
252b5132 RH |
6573 | } |
6574 | ||
6575 | void | |
217aa764 AM |
6576 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6577 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6578 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6579 | { |
6580 | abort (); | |
6581 | } | |
6582 | ||
252b5132 RH |
6583 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6584 | ||
b34976b6 | 6585 | bfd_boolean |
217aa764 | 6586 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6587 | { |
c044fabd | 6588 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6589 | |
6590 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6591 | { | |
6592 | bfd_reloc_code_real_type code; | |
6593 | reloc_howto_type *howto; | |
6594 | ||
6595 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6596 | equivalent ELF reloc. */ |
252b5132 RH |
6597 | |
6598 | if (areloc->howto->pc_relative) | |
6599 | { | |
6600 | switch (areloc->howto->bitsize) | |
6601 | { | |
6602 | case 8: | |
6603 | code = BFD_RELOC_8_PCREL; | |
6604 | break; | |
6605 | case 12: | |
6606 | code = BFD_RELOC_12_PCREL; | |
6607 | break; | |
6608 | case 16: | |
6609 | code = BFD_RELOC_16_PCREL; | |
6610 | break; | |
6611 | case 24: | |
6612 | code = BFD_RELOC_24_PCREL; | |
6613 | break; | |
6614 | case 32: | |
6615 | code = BFD_RELOC_32_PCREL; | |
6616 | break; | |
6617 | case 64: | |
6618 | code = BFD_RELOC_64_PCREL; | |
6619 | break; | |
6620 | default: | |
6621 | goto fail; | |
6622 | } | |
6623 | ||
6624 | howto = bfd_reloc_type_lookup (abfd, code); | |
6625 | ||
6626 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6627 | { | |
6628 | if (howto->pcrel_offset) | |
6629 | areloc->addend += areloc->address; | |
6630 | else | |
6631 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6632 | } | |
6633 | } | |
6634 | else | |
6635 | { | |
6636 | switch (areloc->howto->bitsize) | |
6637 | { | |
6638 | case 8: | |
6639 | code = BFD_RELOC_8; | |
6640 | break; | |
6641 | case 14: | |
6642 | code = BFD_RELOC_14; | |
6643 | break; | |
6644 | case 16: | |
6645 | code = BFD_RELOC_16; | |
6646 | break; | |
6647 | case 26: | |
6648 | code = BFD_RELOC_26; | |
6649 | break; | |
6650 | case 32: | |
6651 | code = BFD_RELOC_32; | |
6652 | break; | |
6653 | case 64: | |
6654 | code = BFD_RELOC_64; | |
6655 | break; | |
6656 | default: | |
6657 | goto fail; | |
6658 | } | |
6659 | ||
6660 | howto = bfd_reloc_type_lookup (abfd, code); | |
6661 | } | |
6662 | ||
6663 | if (howto) | |
6664 | areloc->howto = howto; | |
6665 | else | |
6666 | goto fail; | |
6667 | } | |
6668 | ||
b34976b6 | 6669 | return TRUE; |
252b5132 RH |
6670 | |
6671 | fail: | |
6672 | (*_bfd_error_handler) | |
d003868e AM |
6673 | (_("%B: unsupported relocation type %s"), |
6674 | abfd, areloc->howto->name); | |
252b5132 | 6675 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6676 | return FALSE; |
252b5132 RH |
6677 | } |
6678 | ||
b34976b6 | 6679 | bfd_boolean |
217aa764 | 6680 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6681 | { |
6682 | if (bfd_get_format (abfd) == bfd_object) | |
6683 | { | |
6684 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6685 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
252b5132 RH |
6686 | } |
6687 | ||
6688 | return _bfd_generic_close_and_cleanup (abfd); | |
6689 | } | |
6690 | ||
6691 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6692 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6693 | range-checking to interfere. There is nothing else to do in processing | |
6694 | this reloc. */ | |
6695 | ||
6696 | bfd_reloc_status_type | |
217aa764 AM |
6697 | _bfd_elf_rel_vtable_reloc_fn |
6698 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6699 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6700 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6701 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6702 | { |
6703 | return bfd_reloc_ok; | |
6704 | } | |
252b5132 RH |
6705 | \f |
6706 | /* Elf core file support. Much of this only works on native | |
6707 | toolchains, since we rely on knowing the | |
6708 | machine-dependent procfs structure in order to pick | |
c044fabd | 6709 | out details about the corefile. */ |
252b5132 RH |
6710 | |
6711 | #ifdef HAVE_SYS_PROCFS_H | |
6712 | # include <sys/procfs.h> | |
6713 | #endif | |
6714 | ||
c044fabd | 6715 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6716 | |
6717 | static int | |
217aa764 | 6718 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6719 | { |
6720 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6721 | + (elf_tdata (abfd)->core_pid)); | |
6722 | } | |
6723 | ||
252b5132 RH |
6724 | /* If there isn't a section called NAME, make one, using |
6725 | data from SECT. Note, this function will generate a | |
6726 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6727 | overwrite it. */ |
252b5132 | 6728 | |
b34976b6 | 6729 | static bfd_boolean |
217aa764 | 6730 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6731 | { |
c044fabd | 6732 | asection *sect2; |
252b5132 RH |
6733 | |
6734 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6735 | return TRUE; |
252b5132 RH |
6736 | |
6737 | sect2 = bfd_make_section (abfd, name); | |
6738 | if (sect2 == NULL) | |
b34976b6 | 6739 | return FALSE; |
252b5132 | 6740 | |
eea6121a | 6741 | sect2->size = sect->size; |
252b5132 RH |
6742 | sect2->filepos = sect->filepos; |
6743 | sect2->flags = sect->flags; | |
6744 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6745 | return TRUE; |
252b5132 RH |
6746 | } |
6747 | ||
bb0082d6 AM |
6748 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6749 | actually creates up to two pseudosections: | |
6750 | - For the single-threaded case, a section named NAME, unless | |
6751 | such a section already exists. | |
6752 | - For the multi-threaded case, a section named "NAME/PID", where | |
6753 | PID is elfcore_make_pid (abfd). | |
6754 | Both pseudosections have identical contents. */ | |
b34976b6 | 6755 | bfd_boolean |
217aa764 AM |
6756 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6757 | char *name, | |
6758 | size_t size, | |
6759 | ufile_ptr filepos) | |
bb0082d6 AM |
6760 | { |
6761 | char buf[100]; | |
6762 | char *threaded_name; | |
d4c88bbb | 6763 | size_t len; |
bb0082d6 AM |
6764 | asection *sect; |
6765 | ||
6766 | /* Build the section name. */ | |
6767 | ||
6768 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 6769 | len = strlen (buf) + 1; |
217aa764 | 6770 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 6771 | if (threaded_name == NULL) |
b34976b6 | 6772 | return FALSE; |
d4c88bbb | 6773 | memcpy (threaded_name, buf, len); |
bb0082d6 | 6774 | |
62f3bb11 | 6775 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 6776 | if (sect == NULL) |
b34976b6 | 6777 | return FALSE; |
eea6121a | 6778 | sect->size = size; |
bb0082d6 AM |
6779 | sect->filepos = filepos; |
6780 | sect->flags = SEC_HAS_CONTENTS; | |
6781 | sect->alignment_power = 2; | |
6782 | ||
936e320b | 6783 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
6784 | } |
6785 | ||
252b5132 | 6786 | /* prstatus_t exists on: |
4a938328 | 6787 | solaris 2.5+ |
252b5132 RH |
6788 | linux 2.[01] + glibc |
6789 | unixware 4.2 | |
6790 | */ | |
6791 | ||
6792 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 6793 | |
b34976b6 | 6794 | static bfd_boolean |
217aa764 | 6795 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6796 | { |
eea6121a | 6797 | size_t size; |
7ee38065 | 6798 | int offset; |
252b5132 | 6799 | |
4a938328 MS |
6800 | if (note->descsz == sizeof (prstatus_t)) |
6801 | { | |
6802 | prstatus_t prstat; | |
252b5132 | 6803 | |
eea6121a | 6804 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6805 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 6806 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 6807 | |
fa49d224 NC |
6808 | /* Do not overwrite the core signal if it |
6809 | has already been set by another thread. */ | |
6810 | if (elf_tdata (abfd)->core_signal == 0) | |
6811 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 6812 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 6813 | |
4a938328 MS |
6814 | /* pr_who exists on: |
6815 | solaris 2.5+ | |
6816 | unixware 4.2 | |
6817 | pr_who doesn't exist on: | |
6818 | linux 2.[01] | |
6819 | */ | |
252b5132 | 6820 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 6821 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 6822 | #endif |
4a938328 | 6823 | } |
7ee38065 | 6824 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
6825 | else if (note->descsz == sizeof (prstatus32_t)) |
6826 | { | |
6827 | /* 64-bit host, 32-bit corefile */ | |
6828 | prstatus32_t prstat; | |
6829 | ||
eea6121a | 6830 | size = sizeof (prstat.pr_reg); |
7ee38065 | 6831 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
6832 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
6833 | ||
fa49d224 NC |
6834 | /* Do not overwrite the core signal if it |
6835 | has already been set by another thread. */ | |
6836 | if (elf_tdata (abfd)->core_signal == 0) | |
6837 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
6838 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
6839 | ||
6840 | /* pr_who exists on: | |
6841 | solaris 2.5+ | |
6842 | unixware 4.2 | |
6843 | pr_who doesn't exist on: | |
6844 | linux 2.[01] | |
6845 | */ | |
7ee38065 | 6846 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
6847 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
6848 | #endif | |
6849 | } | |
7ee38065 | 6850 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
6851 | else |
6852 | { | |
6853 | /* Fail - we don't know how to handle any other | |
6854 | note size (ie. data object type). */ | |
b34976b6 | 6855 | return TRUE; |
4a938328 | 6856 | } |
252b5132 | 6857 | |
bb0082d6 | 6858 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b | 6859 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
eea6121a | 6860 | size, note->descpos + offset); |
252b5132 RH |
6861 | } |
6862 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
6863 | ||
bb0082d6 | 6864 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 6865 | static bfd_boolean |
217aa764 AM |
6866 | elfcore_make_note_pseudosection (bfd *abfd, |
6867 | char *name, | |
6868 | Elf_Internal_Note *note) | |
252b5132 | 6869 | { |
936e320b AM |
6870 | return _bfd_elfcore_make_pseudosection (abfd, name, |
6871 | note->descsz, note->descpos); | |
252b5132 RH |
6872 | } |
6873 | ||
ff08c6bb JB |
6874 | /* There isn't a consistent prfpregset_t across platforms, |
6875 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
6876 | data structure apart. */ |
6877 | ||
b34976b6 | 6878 | static bfd_boolean |
217aa764 | 6879 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6880 | { |
6881 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
6882 | } | |
6883 | ||
ff08c6bb JB |
6884 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
6885 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
6886 | literally. */ | |
c044fabd | 6887 | |
b34976b6 | 6888 | static bfd_boolean |
217aa764 | 6889 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6890 | { |
6891 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
6892 | } | |
6893 | ||
252b5132 | 6894 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 6895 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 6896 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
6897 | typedef prpsinfo32_t elfcore_psinfo32_t; |
6898 | #endif | |
252b5132 RH |
6899 | #endif |
6900 | ||
6901 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 6902 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 6903 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
6904 | typedef psinfo32_t elfcore_psinfo32_t; |
6905 | #endif | |
252b5132 RH |
6906 | #endif |
6907 | ||
252b5132 RH |
6908 | /* return a malloc'ed copy of a string at START which is at |
6909 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 6910 | the copy will always have a terminating '\0'. */ |
252b5132 | 6911 | |
936e320b | 6912 | char * |
217aa764 | 6913 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 6914 | { |
dc810e39 | 6915 | char *dups; |
c044fabd | 6916 | char *end = memchr (start, '\0', max); |
dc810e39 | 6917 | size_t len; |
252b5132 RH |
6918 | |
6919 | if (end == NULL) | |
6920 | len = max; | |
6921 | else | |
6922 | len = end - start; | |
6923 | ||
217aa764 | 6924 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 6925 | if (dups == NULL) |
252b5132 RH |
6926 | return NULL; |
6927 | ||
dc810e39 AM |
6928 | memcpy (dups, start, len); |
6929 | dups[len] = '\0'; | |
252b5132 | 6930 | |
dc810e39 | 6931 | return dups; |
252b5132 RH |
6932 | } |
6933 | ||
bb0082d6 | 6934 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 6935 | static bfd_boolean |
217aa764 | 6936 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6937 | { |
4a938328 MS |
6938 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
6939 | { | |
6940 | elfcore_psinfo_t psinfo; | |
252b5132 | 6941 | |
7ee38065 | 6942 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 6943 | |
4a938328 | 6944 | elf_tdata (abfd)->core_program |
936e320b AM |
6945 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
6946 | sizeof (psinfo.pr_fname)); | |
252b5132 | 6947 | |
4a938328 | 6948 | elf_tdata (abfd)->core_command |
936e320b AM |
6949 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
6950 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 6951 | } |
7ee38065 | 6952 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
6953 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
6954 | { | |
6955 | /* 64-bit host, 32-bit corefile */ | |
6956 | elfcore_psinfo32_t psinfo; | |
6957 | ||
7ee38065 | 6958 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 6959 | |
4a938328 | 6960 | elf_tdata (abfd)->core_program |
936e320b AM |
6961 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
6962 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
6963 | |
6964 | elf_tdata (abfd)->core_command | |
936e320b AM |
6965 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
6966 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
6967 | } |
6968 | #endif | |
6969 | ||
6970 | else | |
6971 | { | |
6972 | /* Fail - we don't know how to handle any other | |
6973 | note size (ie. data object type). */ | |
b34976b6 | 6974 | return TRUE; |
4a938328 | 6975 | } |
252b5132 RH |
6976 | |
6977 | /* Note that for some reason, a spurious space is tacked | |
6978 | onto the end of the args in some (at least one anyway) | |
c044fabd | 6979 | implementations, so strip it off if it exists. */ |
252b5132 RH |
6980 | |
6981 | { | |
c044fabd | 6982 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
6983 | int n = strlen (command); |
6984 | ||
6985 | if (0 < n && command[n - 1] == ' ') | |
6986 | command[n - 1] = '\0'; | |
6987 | } | |
6988 | ||
b34976b6 | 6989 | return TRUE; |
252b5132 RH |
6990 | } |
6991 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
6992 | ||
252b5132 | 6993 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 6994 | static bfd_boolean |
217aa764 | 6995 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6996 | { |
f572a39d AM |
6997 | if (note->descsz == sizeof (pstatus_t) |
6998 | #if defined (HAVE_PXSTATUS_T) | |
6999 | || note->descsz == sizeof (pxstatus_t) | |
7000 | #endif | |
7001 | ) | |
4a938328 MS |
7002 | { |
7003 | pstatus_t pstat; | |
252b5132 | 7004 | |
4a938328 | 7005 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7006 | |
4a938328 MS |
7007 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7008 | } | |
7ee38065 | 7009 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
7010 | else if (note->descsz == sizeof (pstatus32_t)) |
7011 | { | |
7012 | /* 64-bit host, 32-bit corefile */ | |
7013 | pstatus32_t pstat; | |
252b5132 | 7014 | |
4a938328 | 7015 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 7016 | |
4a938328 MS |
7017 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
7018 | } | |
7019 | #endif | |
252b5132 RH |
7020 | /* Could grab some more details from the "representative" |
7021 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 7022 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 7023 | |
b34976b6 | 7024 | return TRUE; |
252b5132 RH |
7025 | } |
7026 | #endif /* defined (HAVE_PSTATUS_T) */ | |
7027 | ||
252b5132 | 7028 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 7029 | static bfd_boolean |
217aa764 | 7030 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
7031 | { |
7032 | lwpstatus_t lwpstat; | |
7033 | char buf[100]; | |
c044fabd | 7034 | char *name; |
d4c88bbb | 7035 | size_t len; |
c044fabd | 7036 | asection *sect; |
252b5132 | 7037 | |
f572a39d AM |
7038 | if (note->descsz != sizeof (lwpstat) |
7039 | #if defined (HAVE_LWPXSTATUS_T) | |
7040 | && note->descsz != sizeof (lwpxstatus_t) | |
7041 | #endif | |
7042 | ) | |
b34976b6 | 7043 | return TRUE; |
252b5132 RH |
7044 | |
7045 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
7046 | ||
7047 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
7048 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
7049 | ||
c044fabd | 7050 | /* Make a ".reg/999" section. */ |
252b5132 RH |
7051 | |
7052 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7053 | len = strlen (buf) + 1; |
217aa764 | 7054 | name = bfd_alloc (abfd, len); |
252b5132 | 7055 | if (name == NULL) |
b34976b6 | 7056 | return FALSE; |
d4c88bbb | 7057 | memcpy (name, buf, len); |
252b5132 | 7058 | |
62f3bb11 | 7059 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7060 | if (sect == NULL) |
b34976b6 | 7061 | return FALSE; |
252b5132 RH |
7062 | |
7063 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7064 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); |
252b5132 RH |
7065 | sect->filepos = note->descpos |
7066 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
7067 | #endif | |
7068 | ||
7069 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
eea6121a | 7070 | sect->size = sizeof (lwpstat.pr_reg); |
252b5132 RH |
7071 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); |
7072 | #endif | |
7073 | ||
7074 | sect->flags = SEC_HAS_CONTENTS; | |
7075 | sect->alignment_power = 2; | |
7076 | ||
7077 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7078 | return FALSE; |
252b5132 RH |
7079 | |
7080 | /* Make a ".reg2/999" section */ | |
7081 | ||
7082 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 7083 | len = strlen (buf) + 1; |
217aa764 | 7084 | name = bfd_alloc (abfd, len); |
252b5132 | 7085 | if (name == NULL) |
b34976b6 | 7086 | return FALSE; |
d4c88bbb | 7087 | memcpy (name, buf, len); |
252b5132 | 7088 | |
62f3bb11 | 7089 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 7090 | if (sect == NULL) |
b34976b6 | 7091 | return FALSE; |
252b5132 RH |
7092 | |
7093 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
eea6121a | 7094 | sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); |
252b5132 RH |
7095 | sect->filepos = note->descpos |
7096 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
7097 | #endif | |
7098 | ||
7099 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
eea6121a | 7100 | sect->size = sizeof (lwpstat.pr_fpreg); |
252b5132 RH |
7101 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); |
7102 | #endif | |
7103 | ||
7104 | sect->flags = SEC_HAS_CONTENTS; | |
7105 | sect->alignment_power = 2; | |
7106 | ||
936e320b | 7107 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
7108 | } |
7109 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
7110 | ||
16e9c715 | 7111 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 7112 | static bfd_boolean |
217aa764 | 7113 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
7114 | { |
7115 | char buf[30]; | |
c044fabd | 7116 | char *name; |
d4c88bbb | 7117 | size_t len; |
c044fabd | 7118 | asection *sect; |
16e9c715 NC |
7119 | win32_pstatus_t pstatus; |
7120 | ||
7121 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 7122 | return TRUE; |
16e9c715 | 7123 | |
e8eab623 | 7124 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
7125 | |
7126 | switch (pstatus.data_type) | |
16e9c715 NC |
7127 | { |
7128 | case NOTE_INFO_PROCESS: | |
7129 | /* FIXME: need to add ->core_command. */ | |
7130 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
7131 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 7132 | break; |
16e9c715 NC |
7133 | |
7134 | case NOTE_INFO_THREAD: | |
7135 | /* Make a ".reg/999" section. */ | |
1f170678 | 7136 | sprintf (buf, ".reg/%ld", (long) pstatus.data.thread_info.tid); |
c044fabd | 7137 | |
d4c88bbb | 7138 | len = strlen (buf) + 1; |
217aa764 | 7139 | name = bfd_alloc (abfd, len); |
16e9c715 | 7140 | if (name == NULL) |
b34976b6 | 7141 | return FALSE; |
c044fabd | 7142 | |
d4c88bbb | 7143 | memcpy (name, buf, len); |
16e9c715 | 7144 | |
62f3bb11 | 7145 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 7146 | if (sect == NULL) |
b34976b6 | 7147 | return FALSE; |
c044fabd | 7148 | |
eea6121a | 7149 | sect->size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
7150 | sect->filepos = (note->descpos |
7151 | + offsetof (struct win32_pstatus, | |
7152 | data.thread_info.thread_context)); | |
16e9c715 NC |
7153 | sect->flags = SEC_HAS_CONTENTS; |
7154 | sect->alignment_power = 2; | |
7155 | ||
7156 | if (pstatus.data.thread_info.is_active_thread) | |
7157 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 7158 | return FALSE; |
16e9c715 NC |
7159 | break; |
7160 | ||
7161 | case NOTE_INFO_MODULE: | |
7162 | /* Make a ".module/xxxxxxxx" section. */ | |
1f170678 AM |
7163 | sprintf (buf, ".module/%08lx", |
7164 | (long) pstatus.data.module_info.base_address); | |
c044fabd | 7165 | |
d4c88bbb | 7166 | len = strlen (buf) + 1; |
217aa764 | 7167 | name = bfd_alloc (abfd, len); |
16e9c715 | 7168 | if (name == NULL) |
b34976b6 | 7169 | return FALSE; |
c044fabd | 7170 | |
d4c88bbb | 7171 | memcpy (name, buf, len); |
252b5132 | 7172 | |
62f3bb11 | 7173 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 7174 | |
16e9c715 | 7175 | if (sect == NULL) |
b34976b6 | 7176 | return FALSE; |
c044fabd | 7177 | |
eea6121a | 7178 | sect->size = note->descsz; |
16e9c715 NC |
7179 | sect->filepos = note->descpos; |
7180 | sect->flags = SEC_HAS_CONTENTS; | |
7181 | sect->alignment_power = 2; | |
7182 | break; | |
7183 | ||
7184 | default: | |
b34976b6 | 7185 | return TRUE; |
16e9c715 NC |
7186 | } |
7187 | ||
b34976b6 | 7188 | return TRUE; |
16e9c715 NC |
7189 | } |
7190 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 7191 | |
b34976b6 | 7192 | static bfd_boolean |
217aa764 | 7193 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 7194 | { |
9c5bfbb7 | 7195 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 7196 | |
252b5132 RH |
7197 | switch (note->type) |
7198 | { | |
7199 | default: | |
b34976b6 | 7200 | return TRUE; |
252b5132 | 7201 | |
252b5132 | 7202 | case NT_PRSTATUS: |
bb0082d6 AM |
7203 | if (bed->elf_backend_grok_prstatus) |
7204 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 7205 | return TRUE; |
bb0082d6 | 7206 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 7207 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 7208 | #else |
b34976b6 | 7209 | return TRUE; |
252b5132 RH |
7210 | #endif |
7211 | ||
7212 | #if defined (HAVE_PSTATUS_T) | |
7213 | case NT_PSTATUS: | |
7214 | return elfcore_grok_pstatus (abfd, note); | |
7215 | #endif | |
7216 | ||
7217 | #if defined (HAVE_LWPSTATUS_T) | |
7218 | case NT_LWPSTATUS: | |
7219 | return elfcore_grok_lwpstatus (abfd, note); | |
7220 | #endif | |
7221 | ||
7222 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
7223 | return elfcore_grok_prfpreg (abfd, note); | |
7224 | ||
16e9c715 | 7225 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 7226 | case NT_WIN32PSTATUS: |
16e9c715 NC |
7227 | return elfcore_grok_win32pstatus (abfd, note); |
7228 | #endif | |
7229 | ||
c044fabd | 7230 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
7231 | if (note->namesz == 6 |
7232 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
7233 | return elfcore_grok_prxfpreg (abfd, note); |
7234 | else | |
b34976b6 | 7235 | return TRUE; |
ff08c6bb | 7236 | |
252b5132 RH |
7237 | case NT_PRPSINFO: |
7238 | case NT_PSINFO: | |
bb0082d6 AM |
7239 | if (bed->elf_backend_grok_psinfo) |
7240 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 7241 | return TRUE; |
bb0082d6 | 7242 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 7243 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 7244 | #else |
b34976b6 | 7245 | return TRUE; |
252b5132 | 7246 | #endif |
3333a7c3 RM |
7247 | |
7248 | case NT_AUXV: | |
7249 | { | |
62f3bb11 | 7250 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
7251 | |
7252 | if (sect == NULL) | |
7253 | return FALSE; | |
eea6121a | 7254 | sect->size = note->descsz; |
3333a7c3 RM |
7255 | sect->filepos = note->descpos; |
7256 | sect->flags = SEC_HAS_CONTENTS; | |
7257 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
7258 | ||
7259 | return TRUE; | |
7260 | } | |
252b5132 RH |
7261 | } |
7262 | } | |
7263 | ||
b34976b6 | 7264 | static bfd_boolean |
217aa764 | 7265 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
7266 | { |
7267 | char *cp; | |
7268 | ||
7269 | cp = strchr (note->namedata, '@'); | |
7270 | if (cp != NULL) | |
7271 | { | |
d2b64500 | 7272 | *lwpidp = atoi(cp + 1); |
b34976b6 | 7273 | return TRUE; |
50b2bdb7 | 7274 | } |
b34976b6 | 7275 | return FALSE; |
50b2bdb7 AM |
7276 | } |
7277 | ||
b34976b6 | 7278 | static bfd_boolean |
217aa764 | 7279 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7280 | { |
7281 | ||
7282 | /* Signal number at offset 0x08. */ | |
7283 | elf_tdata (abfd)->core_signal | |
7284 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
7285 | ||
7286 | /* Process ID at offset 0x50. */ | |
7287 | elf_tdata (abfd)->core_pid | |
7288 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
7289 | ||
7290 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
7291 | elf_tdata (abfd)->core_command | |
7292 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
7293 | ||
7720ba9f MK |
7294 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
7295 | note); | |
50b2bdb7 AM |
7296 | } |
7297 | ||
b34976b6 | 7298 | static bfd_boolean |
217aa764 | 7299 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
7300 | { |
7301 | int lwp; | |
7302 | ||
7303 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
7304 | elf_tdata (abfd)->core_lwpid = lwp; | |
7305 | ||
b4db1224 | 7306 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7307 | { |
7308 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7309 | find this note before any of the others, which is fine, | |
7310 | since the kernel writes this note out first when it | |
7311 | creates a core file. */ | |
47d9a591 | 7312 | |
50b2bdb7 AM |
7313 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7314 | } | |
7315 | ||
b4db1224 JT |
7316 | /* As of Jan 2002 there are no other machine-independent notes |
7317 | defined for NetBSD core files. If the note type is less | |
7318 | than the start of the machine-dependent note types, we don't | |
7319 | understand it. */ | |
47d9a591 | 7320 | |
b4db1224 | 7321 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7322 | return TRUE; |
50b2bdb7 AM |
7323 | |
7324 | ||
7325 | switch (bfd_get_arch (abfd)) | |
7326 | { | |
7327 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7328 | PT_GETFPREGS == mach+2. */ | |
7329 | ||
7330 | case bfd_arch_alpha: | |
7331 | case bfd_arch_sparc: | |
7332 | switch (note->type) | |
7333 | { | |
b4db1224 | 7334 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7335 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7336 | ||
b4db1224 | 7337 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7338 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7339 | ||
7340 | default: | |
b34976b6 | 7341 | return TRUE; |
50b2bdb7 AM |
7342 | } |
7343 | ||
7344 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7345 | PT_GETFPREGS == mach+3. */ | |
7346 | ||
7347 | default: | |
7348 | switch (note->type) | |
7349 | { | |
b4db1224 | 7350 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7351 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7352 | ||
b4db1224 | 7353 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7354 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7355 | ||
7356 | default: | |
b34976b6 | 7357 | return TRUE; |
50b2bdb7 AM |
7358 | } |
7359 | } | |
7360 | /* NOTREACHED */ | |
7361 | } | |
7362 | ||
07c6e936 | 7363 | static bfd_boolean |
217aa764 | 7364 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7365 | { |
7366 | void *ddata = note->descdata; | |
7367 | char buf[100]; | |
7368 | char *name; | |
7369 | asection *sect; | |
f8843e87 AM |
7370 | short sig; |
7371 | unsigned flags; | |
07c6e936 NC |
7372 | |
7373 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7374 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7375 | ||
f8843e87 AM |
7376 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7377 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7378 | ||
7379 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7380 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7381 | |
7382 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7383 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7384 | { | |
7385 | elf_tdata (abfd)->core_signal = sig; | |
7386 | elf_tdata (abfd)->core_lwpid = *tid; | |
7387 | } | |
07c6e936 | 7388 | |
f8843e87 AM |
7389 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7390 | do not come from signals so we make sure we set the current | |
7391 | thread just in case. */ | |
7392 | if (flags & 0x00000080) | |
7393 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7394 | |
7395 | /* Make a ".qnx_core_status/%d" section. */ | |
7e7353ed | 7396 | sprintf (buf, ".qnx_core_status/%ld", (long) *tid); |
07c6e936 | 7397 | |
217aa764 | 7398 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7399 | if (name == NULL) |
7400 | return FALSE; | |
7401 | strcpy (name, buf); | |
7402 | ||
62f3bb11 | 7403 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7404 | if (sect == NULL) |
7405 | return FALSE; | |
7406 | ||
eea6121a | 7407 | sect->size = note->descsz; |
07c6e936 NC |
7408 | sect->filepos = note->descpos; |
7409 | sect->flags = SEC_HAS_CONTENTS; | |
7410 | sect->alignment_power = 2; | |
7411 | ||
7412 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7413 | } | |
7414 | ||
7415 | static bfd_boolean | |
d69f560c KW |
7416 | elfcore_grok_nto_regs (bfd *abfd, |
7417 | Elf_Internal_Note *note, | |
7418 | pid_t tid, | |
7419 | char *base) | |
07c6e936 NC |
7420 | { |
7421 | char buf[100]; | |
7422 | char *name; | |
7423 | asection *sect; | |
7424 | ||
d69f560c | 7425 | /* Make a "(base)/%d" section. */ |
7e7353ed | 7426 | sprintf (buf, "%s/%ld", base, (long) tid); |
07c6e936 | 7427 | |
217aa764 | 7428 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7429 | if (name == NULL) |
7430 | return FALSE; | |
7431 | strcpy (name, buf); | |
7432 | ||
62f3bb11 | 7433 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7434 | if (sect == NULL) |
7435 | return FALSE; | |
7436 | ||
eea6121a | 7437 | sect->size = note->descsz; |
07c6e936 NC |
7438 | sect->filepos = note->descpos; |
7439 | sect->flags = SEC_HAS_CONTENTS; | |
7440 | sect->alignment_power = 2; | |
7441 | ||
f8843e87 AM |
7442 | /* This is the current thread. */ |
7443 | if (elf_tdata (abfd)->core_lwpid == tid) | |
d69f560c | 7444 | return elfcore_maybe_make_sect (abfd, base, sect); |
f8843e87 AM |
7445 | |
7446 | return TRUE; | |
07c6e936 NC |
7447 | } |
7448 | ||
7449 | #define BFD_QNT_CORE_INFO 7 | |
7450 | #define BFD_QNT_CORE_STATUS 8 | |
7451 | #define BFD_QNT_CORE_GREG 9 | |
7452 | #define BFD_QNT_CORE_FPREG 10 | |
7453 | ||
7454 | static bfd_boolean | |
217aa764 | 7455 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7456 | { |
7457 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7458 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7459 | function. */ |
7460 | static pid_t tid = 1; | |
7461 | ||
7462 | switch (note->type) | |
7463 | { | |
d69f560c KW |
7464 | case BFD_QNT_CORE_INFO: |
7465 | return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7466 | case BFD_QNT_CORE_STATUS: | |
7467 | return elfcore_grok_nto_status (abfd, note, &tid); | |
7468 | case BFD_QNT_CORE_GREG: | |
7469 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg"); | |
7470 | case BFD_QNT_CORE_FPREG: | |
7471 | return elfcore_grok_nto_regs (abfd, note, tid, ".reg2"); | |
7472 | default: | |
7473 | return TRUE; | |
07c6e936 NC |
7474 | } |
7475 | } | |
7476 | ||
7c76fa91 MS |
7477 | /* Function: elfcore_write_note |
7478 | ||
47d9a591 | 7479 | Inputs: |
7c76fa91 MS |
7480 | buffer to hold note |
7481 | name of note | |
7482 | type of note | |
7483 | data for note | |
7484 | size of data for note | |
7485 | ||
7486 | Return: | |
7487 | End of buffer containing note. */ | |
7488 | ||
7489 | char * | |
217aa764 AM |
7490 | elfcore_write_note (bfd *abfd, |
7491 | char *buf, | |
7492 | int *bufsiz, | |
7493 | const char *name, | |
7494 | int type, | |
7495 | const void *input, | |
7496 | int size) | |
7c76fa91 MS |
7497 | { |
7498 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7499 | size_t namesz; |
7500 | size_t pad; | |
7501 | size_t newspace; | |
7c76fa91 MS |
7502 | char *p, *dest; |
7503 | ||
d4c88bbb AM |
7504 | namesz = 0; |
7505 | pad = 0; | |
7506 | if (name != NULL) | |
7507 | { | |
9c5bfbb7 | 7508 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7509 | |
7510 | namesz = strlen (name) + 1; | |
7511 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7512 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7513 | } |
7514 | ||
5de3bf90 | 7515 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7516 | |
7c76fa91 MS |
7517 | p = realloc (buf, *bufsiz + newspace); |
7518 | dest = p + *bufsiz; | |
7519 | *bufsiz += newspace; | |
7520 | xnp = (Elf_External_Note *) dest; | |
7521 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7522 | H_PUT_32 (abfd, size, xnp->descsz); | |
7523 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7524 | dest = xnp->name; |
7525 | if (name != NULL) | |
7526 | { | |
7527 | memcpy (dest, name, namesz); | |
7528 | dest += namesz; | |
7529 | while (pad != 0) | |
7530 | { | |
7531 | *dest++ = '\0'; | |
7532 | --pad; | |
7533 | } | |
7534 | } | |
7535 | memcpy (dest, input, size); | |
7c76fa91 MS |
7536 | return p; |
7537 | } | |
7538 | ||
7539 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7540 | char * | |
217aa764 AM |
7541 | elfcore_write_prpsinfo (bfd *abfd, |
7542 | char *buf, | |
7543 | int *bufsiz, | |
7544 | const char *fname, | |
7545 | const char *psargs) | |
7c76fa91 MS |
7546 | { |
7547 | int note_type; | |
7548 | char *note_name = "CORE"; | |
7549 | ||
7550 | #if defined (HAVE_PSINFO_T) | |
7551 | psinfo_t data; | |
7552 | note_type = NT_PSINFO; | |
7553 | #else | |
7554 | prpsinfo_t data; | |
7555 | note_type = NT_PRPSINFO; | |
7556 | #endif | |
7557 | ||
7558 | memset (&data, 0, sizeof (data)); | |
7559 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7560 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7561 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7562 | note_name, note_type, &data, sizeof (data)); |
7563 | } | |
7564 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7565 | ||
7566 | #if defined (HAVE_PRSTATUS_T) | |
7567 | char * | |
217aa764 AM |
7568 | elfcore_write_prstatus (bfd *abfd, |
7569 | char *buf, | |
7570 | int *bufsiz, | |
7571 | long pid, | |
7572 | int cursig, | |
7573 | const void *gregs) | |
7c76fa91 MS |
7574 | { |
7575 | prstatus_t prstat; | |
7576 | char *note_name = "CORE"; | |
7577 | ||
7578 | memset (&prstat, 0, sizeof (prstat)); | |
7579 | prstat.pr_pid = pid; | |
7580 | prstat.pr_cursig = cursig; | |
c106e334 | 7581 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7582 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7583 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7584 | } | |
7585 | #endif /* HAVE_PRSTATUS_T */ | |
7586 | ||
51316059 MS |
7587 | #if defined (HAVE_LWPSTATUS_T) |
7588 | char * | |
217aa764 AM |
7589 | elfcore_write_lwpstatus (bfd *abfd, |
7590 | char *buf, | |
7591 | int *bufsiz, | |
7592 | long pid, | |
7593 | int cursig, | |
7594 | const void *gregs) | |
51316059 MS |
7595 | { |
7596 | lwpstatus_t lwpstat; | |
7597 | char *note_name = "CORE"; | |
7598 | ||
7599 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7600 | lwpstat.pr_lwpid = pid >> 16; | |
7601 | lwpstat.pr_cursig = cursig; | |
7602 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7603 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7604 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7605 | #if !defined(gregs) | |
7606 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7607 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7608 | #else | |
7609 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7610 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7611 | #endif | |
7612 | #endif | |
47d9a591 | 7613 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7614 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7615 | } | |
7616 | #endif /* HAVE_LWPSTATUS_T */ | |
7617 | ||
7c76fa91 MS |
7618 | #if defined (HAVE_PSTATUS_T) |
7619 | char * | |
217aa764 AM |
7620 | elfcore_write_pstatus (bfd *abfd, |
7621 | char *buf, | |
7622 | int *bufsiz, | |
7623 | long pid, | |
7624 | int cursig, | |
7625 | const void *gregs) | |
7c76fa91 MS |
7626 | { |
7627 | pstatus_t pstat; | |
7628 | char *note_name = "CORE"; | |
7629 | ||
51316059 MS |
7630 | memset (&pstat, 0, sizeof (pstat)); |
7631 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7632 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7633 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7634 | return buf; | |
7c76fa91 MS |
7635 | } |
7636 | #endif /* HAVE_PSTATUS_T */ | |
7637 | ||
7638 | char * | |
217aa764 AM |
7639 | elfcore_write_prfpreg (bfd *abfd, |
7640 | char *buf, | |
7641 | int *bufsiz, | |
7642 | const void *fpregs, | |
7643 | int size) | |
7c76fa91 MS |
7644 | { |
7645 | char *note_name = "CORE"; | |
47d9a591 | 7646 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7647 | note_name, NT_FPREGSET, fpregs, size); |
7648 | } | |
7649 | ||
7650 | char * | |
217aa764 AM |
7651 | elfcore_write_prxfpreg (bfd *abfd, |
7652 | char *buf, | |
7653 | int *bufsiz, | |
7654 | const void *xfpregs, | |
7655 | int size) | |
7c76fa91 MS |
7656 | { |
7657 | char *note_name = "LINUX"; | |
47d9a591 | 7658 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7659 | note_name, NT_PRXFPREG, xfpregs, size); |
7660 | } | |
7661 | ||
b34976b6 | 7662 | static bfd_boolean |
217aa764 | 7663 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7664 | { |
c044fabd KH |
7665 | char *buf; |
7666 | char *p; | |
252b5132 RH |
7667 | |
7668 | if (size <= 0) | |
b34976b6 | 7669 | return TRUE; |
252b5132 | 7670 | |
dc810e39 | 7671 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7672 | return FALSE; |
252b5132 | 7673 | |
dc810e39 | 7674 | buf = bfd_malloc (size); |
252b5132 | 7675 | if (buf == NULL) |
b34976b6 | 7676 | return FALSE; |
252b5132 | 7677 | |
dc810e39 | 7678 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7679 | { |
7680 | error: | |
7681 | free (buf); | |
b34976b6 | 7682 | return FALSE; |
252b5132 RH |
7683 | } |
7684 | ||
7685 | p = buf; | |
7686 | while (p < buf + size) | |
7687 | { | |
c044fabd KH |
7688 | /* FIXME: bad alignment assumption. */ |
7689 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7690 | Elf_Internal_Note in; |
7691 | ||
dc810e39 | 7692 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7693 | |
dc810e39 | 7694 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7695 | in.namedata = xnp->name; |
7696 | ||
dc810e39 | 7697 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7698 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7699 | in.descpos = offset + (in.descdata - buf); | |
7700 | ||
50b2bdb7 AM |
7701 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7702 | { | |
7703 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7704 | goto error; | |
7705 | } | |
07c6e936 NC |
7706 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7707 | { | |
7708 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7709 | goto error; | |
7710 | } | |
50b2bdb7 AM |
7711 | else |
7712 | { | |
7713 | if (! elfcore_grok_note (abfd, &in)) | |
7714 | goto error; | |
7715 | } | |
252b5132 RH |
7716 | |
7717 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7718 | } | |
7719 | ||
7720 | free (buf); | |
b34976b6 | 7721 | return TRUE; |
252b5132 | 7722 | } |
98d8431c JB |
7723 | \f |
7724 | /* Providing external access to the ELF program header table. */ | |
7725 | ||
7726 | /* Return an upper bound on the number of bytes required to store a | |
7727 | copy of ABFD's program header table entries. Return -1 if an error | |
7728 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7729 | |
98d8431c | 7730 | long |
217aa764 | 7731 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7732 | { |
7733 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7734 | { | |
7735 | bfd_set_error (bfd_error_wrong_format); | |
7736 | return -1; | |
7737 | } | |
7738 | ||
936e320b | 7739 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7740 | } |
7741 | ||
98d8431c JB |
7742 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7743 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7744 | defined in include/elf/internal.h. To find out how large the | |
7745 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7746 | ||
7747 | Return the number of program header table entries read, or -1 if an | |
7748 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7749 | |
98d8431c | 7750 | int |
217aa764 | 7751 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7752 | { |
7753 | int num_phdrs; | |
7754 | ||
7755 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7756 | { | |
7757 | bfd_set_error (bfd_error_wrong_format); | |
7758 | return -1; | |
7759 | } | |
7760 | ||
7761 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7762 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7763 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7764 | ||
7765 | return num_phdrs; | |
7766 | } | |
ae4221d7 L |
7767 | |
7768 | void | |
217aa764 | 7769 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 7770 | { |
d3b05f8d | 7771 | #ifdef BFD64 |
ae4221d7 L |
7772 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7773 | ||
7774 | i_ehdrp = elf_elfheader (abfd); | |
7775 | if (i_ehdrp == NULL) | |
7776 | sprintf_vma (buf, value); | |
7777 | else | |
7778 | { | |
7779 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7780 | { |
ae4221d7 | 7781 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7782 | sprintf (buf, "%016lx", value); |
ae4221d7 | 7783 | #else |
cc55aec9 AM |
7784 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
7785 | _bfd_int64_low (value)); | |
ae4221d7 | 7786 | #endif |
cc55aec9 | 7787 | } |
ae4221d7 L |
7788 | else |
7789 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
7790 | } | |
d3b05f8d L |
7791 | #else |
7792 | sprintf_vma (buf, value); | |
7793 | #endif | |
ae4221d7 L |
7794 | } |
7795 | ||
7796 | void | |
217aa764 | 7797 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 7798 | { |
d3b05f8d | 7799 | #ifdef BFD64 |
ae4221d7 L |
7800 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7801 | ||
7802 | i_ehdrp = elf_elfheader (abfd); | |
7803 | if (i_ehdrp == NULL) | |
7804 | fprintf_vma ((FILE *) stream, value); | |
7805 | else | |
7806 | { | |
7807 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7808 | { |
ae4221d7 | 7809 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7810 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 7811 | #else |
cc55aec9 AM |
7812 | fprintf ((FILE *) stream, "%08lx%08lx", |
7813 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 7814 | #endif |
cc55aec9 | 7815 | } |
ae4221d7 L |
7816 | else |
7817 | fprintf ((FILE *) stream, "%08lx", | |
7818 | (unsigned long) (value & 0xffffffff)); | |
7819 | } | |
d3b05f8d L |
7820 | #else |
7821 | fprintf_vma ((FILE *) stream, value); | |
7822 | #endif | |
ae4221d7 | 7823 | } |
db6751f2 JJ |
7824 | |
7825 | enum elf_reloc_type_class | |
217aa764 | 7826 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
7827 | { |
7828 | return reloc_class_normal; | |
7829 | } | |
f8df10f4 | 7830 | |
47d9a591 | 7831 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
7832 | relocation against a local symbol. */ |
7833 | ||
7834 | bfd_vma | |
217aa764 AM |
7835 | _bfd_elf_rela_local_sym (bfd *abfd, |
7836 | Elf_Internal_Sym *sym, | |
8517fae7 | 7837 | asection **psec, |
217aa764 | 7838 | Elf_Internal_Rela *rel) |
f8df10f4 | 7839 | { |
8517fae7 | 7840 | asection *sec = *psec; |
f8df10f4 JJ |
7841 | bfd_vma relocation; |
7842 | ||
7843 | relocation = (sec->output_section->vma | |
7844 | + sec->output_offset | |
7845 | + sym->st_value); | |
7846 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 7847 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 7848 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 7849 | { |
f8df10f4 | 7850 | rel->r_addend = |
8517fae7 | 7851 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 7852 | elf_section_data (sec)->sec_info, |
753731ee AM |
7853 | sym->st_value + rel->r_addend); |
7854 | if (sec != *psec) | |
7855 | { | |
7856 | /* If we have changed the section, and our original section is | |
7857 | marked with SEC_EXCLUDE, it means that the original | |
7858 | SEC_MERGE section has been completely subsumed in some | |
7859 | other SEC_MERGE section. In this case, we need to leave | |
7860 | some info around for --emit-relocs. */ | |
7861 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7862 | sec->kept_section = *psec; | |
7863 | sec = *psec; | |
7864 | } | |
8517fae7 AM |
7865 | rel->r_addend -= relocation; |
7866 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
7867 | } |
7868 | return relocation; | |
7869 | } | |
c629eae0 JJ |
7870 | |
7871 | bfd_vma | |
217aa764 AM |
7872 | _bfd_elf_rel_local_sym (bfd *abfd, |
7873 | Elf_Internal_Sym *sym, | |
7874 | asection **psec, | |
7875 | bfd_vma addend) | |
47d9a591 | 7876 | { |
c629eae0 JJ |
7877 | asection *sec = *psec; |
7878 | ||
68bfbfcc | 7879 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
7880 | return sym->st_value + addend; |
7881 | ||
7882 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 7883 | elf_section_data (sec)->sec_info, |
753731ee | 7884 | sym->st_value + addend); |
c629eae0 JJ |
7885 | } |
7886 | ||
7887 | bfd_vma | |
217aa764 | 7888 | _bfd_elf_section_offset (bfd *abfd, |
92e4ec35 | 7889 | struct bfd_link_info *info, |
217aa764 AM |
7890 | asection *sec, |
7891 | bfd_vma offset) | |
c629eae0 | 7892 | { |
68bfbfcc | 7893 | switch (sec->sec_info_type) |
65765700 JJ |
7894 | { |
7895 | case ELF_INFO_TYPE_STABS: | |
eea6121a AM |
7896 | return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info, |
7897 | offset); | |
65765700 | 7898 | case ELF_INFO_TYPE_EH_FRAME: |
92e4ec35 | 7899 | return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset); |
65765700 JJ |
7900 | default: |
7901 | return offset; | |
7902 | } | |
c629eae0 | 7903 | } |
3333a7c3 RM |
7904 | \f |
7905 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
7906 | reconstruct an ELF file by reading the segments out of remote memory | |
7907 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
7908 | points to. If not null, *LOADBASEP is filled in with the difference | |
7909 | between the VMAs from which the segments were read, and the VMAs the | |
7910 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
7911 | ||
7912 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
7913 | remote memory at target address VMA into the local buffer at MYADDR; it | |
7914 | should return zero on success or an `errno' code on failure. TEMPL must | |
7915 | be a BFD for an ELF target with the word size and byte order found in | |
7916 | the remote memory. */ | |
7917 | ||
7918 | bfd * | |
217aa764 AM |
7919 | bfd_elf_bfd_from_remote_memory |
7920 | (bfd *templ, | |
7921 | bfd_vma ehdr_vma, | |
7922 | bfd_vma *loadbasep, | |
f075ee0c | 7923 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)) |
3333a7c3 RM |
7924 | { |
7925 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
7926 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
7927 | } | |
4c45e5c9 JJ |
7928 | \f |
7929 | long | |
c9727e01 AM |
7930 | _bfd_elf_get_synthetic_symtab (bfd *abfd, |
7931 | long symcount ATTRIBUTE_UNUSED, | |
7932 | asymbol **syms ATTRIBUTE_UNUSED, | |
8615f3f2 | 7933 | long dynsymcount, |
c9727e01 AM |
7934 | asymbol **dynsyms, |
7935 | asymbol **ret) | |
4c45e5c9 JJ |
7936 | { |
7937 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7938 | asection *relplt; | |
7939 | asymbol *s; | |
7940 | const char *relplt_name; | |
7941 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
7942 | arelent *p; | |
7943 | long count, i, n; | |
7944 | size_t size; | |
7945 | Elf_Internal_Shdr *hdr; | |
7946 | char *names; | |
7947 | asection *plt; | |
7948 | ||
8615f3f2 AM |
7949 | *ret = NULL; |
7950 | ||
90e3cdf2 JJ |
7951 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
7952 | return 0; | |
7953 | ||
8615f3f2 AM |
7954 | if (dynsymcount <= 0) |
7955 | return 0; | |
7956 | ||
4c45e5c9 JJ |
7957 | if (!bed->plt_sym_val) |
7958 | return 0; | |
7959 | ||
7960 | relplt_name = bed->relplt_name; | |
7961 | if (relplt_name == NULL) | |
7962 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
7963 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
7964 | if (relplt == NULL) | |
7965 | return 0; | |
7966 | ||
7967 | hdr = &elf_section_data (relplt)->this_hdr; | |
7968 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
7969 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
7970 | return 0; | |
7971 | ||
7972 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
7973 | if (plt == NULL) | |
7974 | return 0; | |
7975 | ||
7976 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
c9727e01 | 7977 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) |
4c45e5c9 JJ |
7978 | return -1; |
7979 | ||
eea6121a | 7980 | count = relplt->size / hdr->sh_entsize; |
4c45e5c9 JJ |
7981 | size = count * sizeof (asymbol); |
7982 | p = relplt->relocation; | |
7983 | for (i = 0; i < count; i++, s++, p++) | |
7984 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
7985 | ||
7986 | s = *ret = bfd_malloc (size); | |
7987 | if (s == NULL) | |
7988 | return -1; | |
7989 | ||
7990 | names = (char *) (s + count); | |
7991 | p = relplt->relocation; | |
7992 | n = 0; | |
7993 | for (i = 0; i < count; i++, s++, p++) | |
7994 | { | |
7995 | size_t len; | |
7996 | bfd_vma addr; | |
7997 | ||
7998 | addr = bed->plt_sym_val (i, plt, p); | |
7999 | if (addr == (bfd_vma) -1) | |
8000 | continue; | |
8001 | ||
8002 | *s = **p->sym_ptr_ptr; | |
8003 | s->section = plt; | |
8004 | s->value = addr - plt->vma; | |
8005 | s->name = names; | |
8006 | len = strlen ((*p->sym_ptr_ptr)->name); | |
8007 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
8008 | names += len; | |
8009 | memcpy (names, "@plt", sizeof ("@plt")); | |
8010 | names += sizeof ("@plt"); | |
8011 | ++n; | |
8012 | } | |
8013 | ||
8014 | return n; | |
8015 | } | |
3d7f7666 L |
8016 | |
8017 | /* Sort symbol by binding and section. We want to put definitions | |
8018 | sorted by section at the beginning. */ | |
8019 | ||
8020 | static int | |
8021 | elf_sort_elf_symbol (const void *arg1, const void *arg2) | |
8022 | { | |
8023 | const Elf_Internal_Sym *s1; | |
8024 | const Elf_Internal_Sym *s2; | |
8025 | int shndx; | |
8026 | ||
8027 | /* Make sure that undefined symbols are at the end. */ | |
8028 | s1 = (const Elf_Internal_Sym *) arg1; | |
8029 | if (s1->st_shndx == SHN_UNDEF) | |
8030 | return 1; | |
8031 | s2 = (const Elf_Internal_Sym *) arg2; | |
8032 | if (s2->st_shndx == SHN_UNDEF) | |
8033 | return -1; | |
8034 | ||
8035 | /* Sorted by section index. */ | |
8036 | shndx = s1->st_shndx - s2->st_shndx; | |
8037 | if (shndx != 0) | |
8038 | return shndx; | |
8039 | ||
8040 | /* Sorted by binding. */ | |
8041 | return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info); | |
8042 | } | |
8043 | ||
8044 | struct elf_symbol | |
8045 | { | |
8046 | Elf_Internal_Sym *sym; | |
8047 | const char *name; | |
8048 | }; | |
8049 | ||
8050 | static int | |
8051 | elf_sym_name_compare (const void *arg1, const void *arg2) | |
8052 | { | |
8053 | const struct elf_symbol *s1 = (const struct elf_symbol *) arg1; | |
8054 | const struct elf_symbol *s2 = (const struct elf_symbol *) arg2; | |
8055 | return strcmp (s1->name, s2->name); | |
8056 | } | |
8057 | ||
8058 | /* Check if 2 sections define the same set of local and global | |
8059 | symbols. */ | |
8060 | ||
8061 | bfd_boolean | |
8062 | bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2) | |
8063 | { | |
8064 | bfd *bfd1, *bfd2; | |
8065 | const struct elf_backend_data *bed1, *bed2; | |
8066 | Elf_Internal_Shdr *hdr1, *hdr2; | |
8067 | bfd_size_type symcount1, symcount2; | |
8068 | Elf_Internal_Sym *isymbuf1, *isymbuf2; | |
8069 | Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym; | |
8070 | Elf_Internal_Sym *isymend; | |
8071 | struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL; | |
8072 | bfd_size_type count1, count2, i; | |
8073 | int shndx1, shndx2; | |
8074 | bfd_boolean result; | |
8075 | ||
8076 | bfd1 = sec1->owner; | |
8077 | bfd2 = sec2->owner; | |
8078 | ||
8079 | /* If both are .gnu.linkonce sections, they have to have the same | |
8080 | section name. */ | |
8081 | if (strncmp (sec1->name, ".gnu.linkonce", | |
8082 | sizeof ".gnu.linkonce" - 1) == 0 | |
8083 | && strncmp (sec2->name, ".gnu.linkonce", | |
8084 | sizeof ".gnu.linkonce" - 1) == 0) | |
8085 | return strcmp (sec1->name + sizeof ".gnu.linkonce", | |
8086 | sec2->name + sizeof ".gnu.linkonce") == 0; | |
8087 | ||
8088 | /* Both sections have to be in ELF. */ | |
8089 | if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour | |
8090 | || bfd_get_flavour (bfd2) != bfd_target_elf_flavour) | |
8091 | return FALSE; | |
8092 | ||
8093 | if (elf_section_type (sec1) != elf_section_type (sec2)) | |
8094 | return FALSE; | |
8095 | ||
8096 | if ((elf_section_flags (sec1) & SHF_GROUP) != 0 | |
8097 | && (elf_section_flags (sec2) & SHF_GROUP) != 0) | |
8098 | { | |
8099 | /* If both are members of section groups, they have to have the | |
8100 | same group name. */ | |
8101 | if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0) | |
8102 | return FALSE; | |
8103 | } | |
8104 | ||
8105 | shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1); | |
8106 | shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2); | |
8107 | if (shndx1 == -1 || shndx2 == -1) | |
8108 | return FALSE; | |
8109 | ||
8110 | bed1 = get_elf_backend_data (bfd1); | |
8111 | bed2 = get_elf_backend_data (bfd2); | |
8112 | hdr1 = &elf_tdata (bfd1)->symtab_hdr; | |
8113 | symcount1 = hdr1->sh_size / bed1->s->sizeof_sym; | |
8114 | hdr2 = &elf_tdata (bfd2)->symtab_hdr; | |
8115 | symcount2 = hdr2->sh_size / bed2->s->sizeof_sym; | |
8116 | ||
8117 | if (symcount1 == 0 || symcount2 == 0) | |
8118 | return FALSE; | |
8119 | ||
8120 | isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0, | |
8121 | NULL, NULL, NULL); | |
8122 | isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0, | |
8123 | NULL, NULL, NULL); | |
8124 | ||
8125 | result = FALSE; | |
8126 | if (isymbuf1 == NULL || isymbuf2 == NULL) | |
8127 | goto done; | |
8128 | ||
8129 | /* Sort symbols by binding and section. Global definitions are at | |
8130 | the beginning. */ | |
8131 | qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym), | |
8132 | elf_sort_elf_symbol); | |
8133 | qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym), | |
8134 | elf_sort_elf_symbol); | |
8135 | ||
8136 | /* Count definitions in the section. */ | |
8137 | count1 = 0; | |
8138 | for (isym = isymbuf1, isymend = isym + symcount1; | |
8139 | isym < isymend; isym++) | |
8140 | { | |
8141 | if (isym->st_shndx == (unsigned int) shndx1) | |
8142 | { | |
8143 | if (count1 == 0) | |
8144 | isymstart1 = isym; | |
8145 | count1++; | |
8146 | } | |
8147 | ||
8148 | if (count1 && isym->st_shndx != (unsigned int) shndx1) | |
8149 | break; | |
8150 | } | |
8151 | ||
8152 | count2 = 0; | |
8153 | for (isym = isymbuf2, isymend = isym + symcount2; | |
8154 | isym < isymend; isym++) | |
8155 | { | |
8156 | if (isym->st_shndx == (unsigned int) shndx2) | |
8157 | { | |
8158 | if (count2 == 0) | |
8159 | isymstart2 = isym; | |
8160 | count2++; | |
8161 | } | |
8162 | ||
8163 | if (count2 && isym->st_shndx != (unsigned int) shndx2) | |
8164 | break; | |
8165 | } | |
8166 | ||
8167 | if (count1 == 0 || count2 == 0 || count1 != count2) | |
8168 | goto done; | |
8169 | ||
8170 | symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8171 | symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol)); | |
8172 | ||
8173 | if (symtable1 == NULL || symtable2 == NULL) | |
8174 | goto done; | |
8175 | ||
8176 | symp = symtable1; | |
8177 | for (isym = isymstart1, isymend = isym + count1; | |
8178 | isym < isymend; isym++) | |
8179 | { | |
8180 | symp->sym = isym; | |
8181 | symp->name = bfd_elf_string_from_elf_section (bfd1, | |
8182 | hdr1->sh_link, | |
8183 | isym->st_name); | |
8184 | symp++; | |
8185 | } | |
8186 | ||
8187 | symp = symtable2; | |
8188 | for (isym = isymstart2, isymend = isym + count1; | |
8189 | isym < isymend; isym++) | |
8190 | { | |
8191 | symp->sym = isym; | |
8192 | symp->name = bfd_elf_string_from_elf_section (bfd2, | |
8193 | hdr2->sh_link, | |
8194 | isym->st_name); | |
8195 | symp++; | |
8196 | } | |
8197 | ||
8198 | /* Sort symbol by name. */ | |
8199 | qsort (symtable1, count1, sizeof (struct elf_symbol), | |
8200 | elf_sym_name_compare); | |
8201 | qsort (symtable2, count1, sizeof (struct elf_symbol), | |
8202 | elf_sym_name_compare); | |
8203 | ||
8204 | for (i = 0; i < count1; i++) | |
8205 | /* Two symbols must have the same binding, type and name. */ | |
8206 | if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info | |
8207 | || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other | |
8208 | || strcmp (symtable1 [i].name, symtable2 [i].name) != 0) | |
8209 | goto done; | |
8210 | ||
8211 | result = TRUE; | |
8212 | ||
8213 | done: | |
8214 | if (symtable1) | |
8215 | free (symtable1); | |
8216 | if (symtable2) | |
8217 | free (symtable2); | |
8218 | if (isymbuf1) | |
8219 | free (isymbuf1); | |
8220 | if (isymbuf2) | |
8221 | free (isymbuf2); | |
8222 | ||
8223 | return result; | |
8224 | } |