Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ELF executable support for BFD. |
340b6d91 AC |
2 | |
3 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, | |
4 | 2002, 2003, 2004 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 RH |
212 | |
213 | static char * | |
217aa764 | 214 | elf_read (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 RH |
215 | { |
216 | char *buf; | |
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; | |
256 | char *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) | |
262 | return 0; | |
263 | ||
264 | shstrtab = (char *) i_shdrp[shindex]->contents; | |
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 RH |
272 | } |
273 | return shstrtab; | |
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 | { | |
294 | (*_bfd_error_handler) | |
295 | (_("%s: invalid string offset %u >= %lu for section `%s'"), | |
8f615d07 | 296 | bfd_archive_filename (abfd), strindex, (unsigned long) hdr->sh_size, |
252b5132 RH |
297 | ((shindex == elf_elfheader(abfd)->e_shstrndx |
298 | && strindex == hdr->sh_name) | |
299 | ? ".shstrtab" | |
300 | : elf_string_from_elf_strtab (abfd, hdr->sh_name))); | |
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 * | |
217aa764 | 408 | bfd_elf_local_sym_name (bfd *abfd, Elf_Internal_Sym *isym) |
5cab59f6 AM |
409 | { |
410 | unsigned int iname = isym->st_name; | |
411 | unsigned int shindex = elf_tdata (abfd)->symtab_hdr.sh_link; | |
412 | if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
413 | { | |
414 | iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name; | |
415 | shindex = elf_elfheader (abfd)->e_shstrndx; | |
416 | } | |
417 | ||
418 | return bfd_elf_string_from_elf_section (abfd, shindex, iname); | |
419 | } | |
420 | ||
dbb410c3 AM |
421 | /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP |
422 | sections. The first element is the flags, the rest are section | |
423 | pointers. */ | |
424 | ||
425 | typedef union elf_internal_group { | |
426 | Elf_Internal_Shdr *shdr; | |
427 | unsigned int flags; | |
428 | } Elf_Internal_Group; | |
429 | ||
b885599b AM |
430 | /* Return the name of the group signature symbol. Why isn't the |
431 | signature just a string? */ | |
432 | ||
433 | static const char * | |
217aa764 | 434 | group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr) |
b885599b | 435 | { |
9dce4196 | 436 | Elf_Internal_Shdr *hdr; |
9dce4196 AM |
437 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
438 | Elf_External_Sym_Shndx eshndx; | |
439 | Elf_Internal_Sym isym; | |
b885599b AM |
440 | |
441 | /* First we need to ensure the symbol table is available. */ | |
442 | if (! bfd_section_from_shdr (abfd, ghdr->sh_link)) | |
443 | return NULL; | |
444 | ||
9dce4196 AM |
445 | /* Go read the symbol. */ |
446 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
447 | if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info, |
448 | &isym, esym, &eshndx) == NULL) | |
b885599b | 449 | return NULL; |
9dce4196 | 450 | |
5cab59f6 | 451 | return bfd_elf_local_sym_name (abfd, &isym); |
b885599b AM |
452 | } |
453 | ||
dbb410c3 AM |
454 | /* Set next_in_group list pointer, and group name for NEWSECT. */ |
455 | ||
b34976b6 | 456 | static bfd_boolean |
217aa764 | 457 | setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect) |
dbb410c3 AM |
458 | { |
459 | unsigned int num_group = elf_tdata (abfd)->num_group; | |
460 | ||
461 | /* If num_group is zero, read in all SHT_GROUP sections. The count | |
462 | is set to -1 if there are no SHT_GROUP sections. */ | |
463 | if (num_group == 0) | |
464 | { | |
465 | unsigned int i, shnum; | |
466 | ||
467 | /* First count the number of groups. If we have a SHT_GROUP | |
468 | section with just a flag word (ie. sh_size is 4), ignore it. */ | |
9ad5cbcf | 469 | shnum = elf_numsections (abfd); |
dbb410c3 AM |
470 | num_group = 0; |
471 | for (i = 0; i < shnum; i++) | |
472 | { | |
473 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
474 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
475 | num_group += 1; | |
476 | } | |
477 | ||
478 | if (num_group == 0) | |
973ffd63 | 479 | num_group = (unsigned) -1; |
dbb410c3 AM |
480 | elf_tdata (abfd)->num_group = num_group; |
481 | ||
482 | if (num_group > 0) | |
483 | { | |
484 | /* We keep a list of elf section headers for group sections, | |
485 | so we can find them quickly. */ | |
486 | bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *); | |
487 | elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt); | |
488 | if (elf_tdata (abfd)->group_sect_ptr == NULL) | |
b34976b6 | 489 | return FALSE; |
dbb410c3 AM |
490 | |
491 | num_group = 0; | |
492 | for (i = 0; i < shnum; i++) | |
493 | { | |
494 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i]; | |
495 | if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8) | |
496 | { | |
973ffd63 | 497 | unsigned char *src; |
dbb410c3 AM |
498 | Elf_Internal_Group *dest; |
499 | ||
500 | /* Add to list of sections. */ | |
501 | elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; | |
502 | num_group += 1; | |
503 | ||
504 | /* Read the raw contents. */ | |
505 | BFD_ASSERT (sizeof (*dest) >= 4); | |
506 | amt = shdr->sh_size * sizeof (*dest) / 4; | |
507 | shdr->contents = bfd_alloc (abfd, amt); | |
508 | if (shdr->contents == NULL | |
509 | || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0 | |
510 | || (bfd_bread (shdr->contents, shdr->sh_size, abfd) | |
511 | != shdr->sh_size)) | |
b34976b6 | 512 | return FALSE; |
dbb410c3 AM |
513 | |
514 | /* Translate raw contents, a flag word followed by an | |
515 | array of elf section indices all in target byte order, | |
516 | to the flag word followed by an array of elf section | |
517 | pointers. */ | |
518 | src = shdr->contents + shdr->sh_size; | |
519 | dest = (Elf_Internal_Group *) (shdr->contents + amt); | |
520 | while (1) | |
521 | { | |
522 | unsigned int idx; | |
523 | ||
524 | src -= 4; | |
525 | --dest; | |
526 | idx = H_GET_32 (abfd, src); | |
527 | if (src == shdr->contents) | |
528 | { | |
529 | dest->flags = idx; | |
b885599b AM |
530 | if (shdr->bfd_section != NULL && (idx & GRP_COMDAT)) |
531 | shdr->bfd_section->flags | |
532 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
dbb410c3 AM |
533 | break; |
534 | } | |
535 | if (idx >= shnum) | |
536 | { | |
537 | ((*_bfd_error_handler) | |
538 | (_("%s: invalid SHT_GROUP entry"), | |
539 | bfd_archive_filename (abfd))); | |
540 | idx = 0; | |
541 | } | |
542 | dest->shdr = elf_elfsections (abfd)[idx]; | |
543 | } | |
544 | } | |
545 | } | |
546 | } | |
547 | } | |
548 | ||
549 | if (num_group != (unsigned) -1) | |
550 | { | |
551 | unsigned int i; | |
552 | ||
553 | for (i = 0; i < num_group; i++) | |
554 | { | |
555 | Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i]; | |
556 | Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; | |
557 | unsigned int n_elt = shdr->sh_size / 4; | |
558 | ||
559 | /* Look through this group's sections to see if current | |
560 | section is a member. */ | |
561 | while (--n_elt != 0) | |
562 | if ((++idx)->shdr == hdr) | |
563 | { | |
e0e8c97f | 564 | asection *s = NULL; |
dbb410c3 AM |
565 | |
566 | /* We are a member of this group. Go looking through | |
567 | other members to see if any others are linked via | |
568 | next_in_group. */ | |
569 | idx = (Elf_Internal_Group *) shdr->contents; | |
570 | n_elt = shdr->sh_size / 4; | |
571 | while (--n_elt != 0) | |
572 | if ((s = (++idx)->shdr->bfd_section) != NULL | |
945906ff | 573 | && elf_next_in_group (s) != NULL) |
dbb410c3 AM |
574 | break; |
575 | if (n_elt != 0) | |
576 | { | |
dbb410c3 AM |
577 | /* Snarf the group name from other member, and |
578 | insert current section in circular list. */ | |
945906ff AM |
579 | elf_group_name (newsect) = elf_group_name (s); |
580 | elf_next_in_group (newsect) = elf_next_in_group (s); | |
581 | elf_next_in_group (s) = newsect; | |
dbb410c3 AM |
582 | } |
583 | else | |
584 | { | |
dbb410c3 AM |
585 | const char *gname; |
586 | ||
b885599b AM |
587 | gname = group_signature (abfd, shdr); |
588 | if (gname == NULL) | |
b34976b6 | 589 | return FALSE; |
945906ff | 590 | elf_group_name (newsect) = gname; |
dbb410c3 AM |
591 | |
592 | /* Start a circular list with one element. */ | |
945906ff | 593 | elf_next_in_group (newsect) = newsect; |
dbb410c3 | 594 | } |
b885599b | 595 | |
9dce4196 AM |
596 | /* If the group section has been created, point to the |
597 | new member. */ | |
dbb410c3 | 598 | if (shdr->bfd_section != NULL) |
945906ff | 599 | elf_next_in_group (shdr->bfd_section) = newsect; |
b885599b | 600 | |
dbb410c3 AM |
601 | i = num_group - 1; |
602 | break; | |
603 | } | |
604 | } | |
605 | } | |
606 | ||
945906ff | 607 | if (elf_group_name (newsect) == NULL) |
dbb410c3 AM |
608 | { |
609 | (*_bfd_error_handler) (_("%s: no group info for section %s"), | |
610 | bfd_archive_filename (abfd), newsect->name); | |
611 | } | |
b34976b6 | 612 | return TRUE; |
dbb410c3 AM |
613 | } |
614 | ||
72adc230 AM |
615 | bfd_boolean |
616 | bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) | |
617 | { | |
618 | return elf_next_in_group (sec) != NULL; | |
619 | } | |
620 | ||
b34976b6 | 621 | bfd_boolean |
217aa764 | 622 | bfd_elf_discard_group (bfd *abfd ATTRIBUTE_UNUSED, asection *group) |
b885599b AM |
623 | { |
624 | asection *first = elf_next_in_group (group); | |
625 | asection *s = first; | |
626 | ||
627 | while (s != NULL) | |
628 | { | |
629 | s->output_section = bfd_abs_section_ptr; | |
630 | s = elf_next_in_group (s); | |
631 | /* These lists are circular. */ | |
632 | if (s == first) | |
633 | break; | |
634 | } | |
b34976b6 | 635 | return TRUE; |
b885599b AM |
636 | } |
637 | ||
252b5132 RH |
638 | /* Make a BFD section from an ELF section. We store a pointer to the |
639 | BFD section in the bfd_section field of the header. */ | |
640 | ||
b34976b6 | 641 | bfd_boolean |
217aa764 AM |
642 | _bfd_elf_make_section_from_shdr (bfd *abfd, |
643 | Elf_Internal_Shdr *hdr, | |
644 | const char *name) | |
252b5132 RH |
645 | { |
646 | asection *newsect; | |
647 | flagword flags; | |
9c5bfbb7 | 648 | const struct elf_backend_data *bed; |
252b5132 RH |
649 | |
650 | if (hdr->bfd_section != NULL) | |
651 | { | |
652 | BFD_ASSERT (strcmp (name, | |
653 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
b34976b6 | 654 | return TRUE; |
252b5132 RH |
655 | } |
656 | ||
657 | newsect = bfd_make_section_anyway (abfd, name); | |
658 | if (newsect == NULL) | |
b34976b6 | 659 | return FALSE; |
252b5132 | 660 | |
1829f4b2 AM |
661 | hdr->bfd_section = newsect; |
662 | elf_section_data (newsect)->this_hdr = *hdr; | |
663 | ||
2f89ff8d L |
664 | /* Always use the real type/flags. */ |
665 | elf_section_type (newsect) = hdr->sh_type; | |
666 | elf_section_flags (newsect) = hdr->sh_flags; | |
667 | ||
252b5132 RH |
668 | newsect->filepos = hdr->sh_offset; |
669 | ||
670 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
671 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
672 | || ! bfd_set_section_alignment (abfd, newsect, | |
dc810e39 | 673 | bfd_log2 ((bfd_vma) hdr->sh_addralign))) |
b34976b6 | 674 | return FALSE; |
252b5132 RH |
675 | |
676 | flags = SEC_NO_FLAGS; | |
677 | if (hdr->sh_type != SHT_NOBITS) | |
678 | flags |= SEC_HAS_CONTENTS; | |
dbb410c3 AM |
679 | if (hdr->sh_type == SHT_GROUP) |
680 | flags |= SEC_GROUP | SEC_EXCLUDE; | |
252b5132 RH |
681 | if ((hdr->sh_flags & SHF_ALLOC) != 0) |
682 | { | |
683 | flags |= SEC_ALLOC; | |
684 | if (hdr->sh_type != SHT_NOBITS) | |
685 | flags |= SEC_LOAD; | |
686 | } | |
687 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
688 | flags |= SEC_READONLY; | |
689 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
690 | flags |= SEC_CODE; | |
691 | else if ((flags & SEC_LOAD) != 0) | |
692 | flags |= SEC_DATA; | |
f5fa8ca2 JJ |
693 | if ((hdr->sh_flags & SHF_MERGE) != 0) |
694 | { | |
695 | flags |= SEC_MERGE; | |
696 | newsect->entsize = hdr->sh_entsize; | |
697 | if ((hdr->sh_flags & SHF_STRINGS) != 0) | |
698 | flags |= SEC_STRINGS; | |
699 | } | |
dbb410c3 AM |
700 | if (hdr->sh_flags & SHF_GROUP) |
701 | if (!setup_group (abfd, hdr, newsect)) | |
b34976b6 | 702 | return FALSE; |
13ae64f3 JJ |
703 | if ((hdr->sh_flags & SHF_TLS) != 0) |
704 | flags |= SEC_THREAD_LOCAL; | |
252b5132 RH |
705 | |
706 | /* The debugging sections appear to be recognized only by name, not | |
707 | any sort of flag. */ | |
7a6cc5fb | 708 | { |
dbf48117 | 709 | static const char *debug_sec_names [] = |
7a6cc5fb NC |
710 | { |
711 | ".debug", | |
712 | ".gnu.linkonce.wi.", | |
713 | ".line", | |
714 | ".stab" | |
715 | }; | |
716 | int i; | |
717 | ||
e0e8c97f | 718 | for (i = ARRAY_SIZE (debug_sec_names); i--;) |
7a6cc5fb NC |
719 | if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0) |
720 | break; | |
721 | ||
722 | if (i >= 0) | |
723 | flags |= SEC_DEBUGGING; | |
724 | } | |
252b5132 RH |
725 | |
726 | /* As a GNU extension, if the name begins with .gnu.linkonce, we | |
727 | only link a single copy of the section. This is used to support | |
728 | g++. g++ will emit each template expansion in its own section. | |
729 | The symbols will be defined as weak, so that multiple definitions | |
730 | are permitted. The GNU linker extension is to actually discard | |
731 | all but one of the sections. */ | |
b885599b AM |
732 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0 |
733 | && elf_next_in_group (newsect) == NULL) | |
252b5132 RH |
734 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; |
735 | ||
fa152c49 JW |
736 | bed = get_elf_backend_data (abfd); |
737 | if (bed->elf_backend_section_flags) | |
738 | if (! bed->elf_backend_section_flags (&flags, hdr)) | |
b34976b6 | 739 | return FALSE; |
fa152c49 | 740 | |
252b5132 | 741 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
b34976b6 | 742 | return FALSE; |
252b5132 RH |
743 | |
744 | if ((flags & SEC_ALLOC) != 0) | |
745 | { | |
746 | Elf_Internal_Phdr *phdr; | |
747 | unsigned int i; | |
748 | ||
749 | /* Look through the phdrs to see if we need to adjust the lma. | |
750 | If all the p_paddr fields are zero, we ignore them, since | |
751 | some ELF linkers produce such output. */ | |
752 | phdr = elf_tdata (abfd)->phdr; | |
753 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
754 | { | |
755 | if (phdr->p_paddr != 0) | |
756 | break; | |
757 | } | |
758 | if (i < elf_elfheader (abfd)->e_phnum) | |
759 | { | |
760 | phdr = elf_tdata (abfd)->phdr; | |
761 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
762 | { | |
e0e8c97f NC |
763 | /* This section is part of this segment if its file |
764 | offset plus size lies within the segment's memory | |
765 | span and, if the section is loaded, the extent of the | |
47d9a591 | 766 | loaded data lies within the extent of the segment. |
bf36db18 NC |
767 | |
768 | Note - we used to check the p_paddr field as well, and | |
769 | refuse to set the LMA if it was 0. This is wrong | |
dba143ef | 770 | though, as a perfectly valid initialised segment can |
bf36db18 | 771 | have a p_paddr of zero. Some architectures, eg ARM, |
dba143ef | 772 | place special significance on the address 0 and |
bf36db18 NC |
773 | executables need to be able to have a segment which |
774 | covers this address. */ | |
252b5132 | 775 | if (phdr->p_type == PT_LOAD |
e0e8c97f NC |
776 | && (bfd_vma) hdr->sh_offset >= phdr->p_offset |
777 | && (hdr->sh_offset + hdr->sh_size | |
778 | <= phdr->p_offset + phdr->p_memsz) | |
252b5132 | 779 | && ((flags & SEC_LOAD) == 0 |
d7866f04 AM |
780 | || (hdr->sh_offset + hdr->sh_size |
781 | <= phdr->p_offset + phdr->p_filesz))) | |
252b5132 | 782 | { |
dba143ef | 783 | if ((flags & SEC_LOAD) == 0) |
d7866f04 AM |
784 | newsect->lma = (phdr->p_paddr |
785 | + hdr->sh_addr - phdr->p_vaddr); | |
dba143ef AM |
786 | else |
787 | /* We used to use the same adjustment for SEC_LOAD | |
788 | sections, but that doesn't work if the segment | |
789 | is packed with code from multiple VMAs. | |
790 | Instead we calculate the section LMA based on | |
791 | the segment LMA. It is assumed that the | |
792 | segment will contain sections with contiguous | |
793 | LMAs, even if the VMAs are not. */ | |
794 | newsect->lma = (phdr->p_paddr | |
795 | + hdr->sh_offset - phdr->p_offset); | |
d7866f04 AM |
796 | |
797 | /* With contiguous segments, we can't tell from file | |
798 | offsets whether a section with zero size should | |
799 | be placed at the end of one segment or the | |
800 | beginning of the next. Decide based on vaddr. */ | |
801 | if (hdr->sh_addr >= phdr->p_vaddr | |
802 | && (hdr->sh_addr + hdr->sh_size | |
803 | <= phdr->p_vaddr + phdr->p_memsz)) | |
804 | break; | |
252b5132 RH |
805 | } |
806 | } | |
807 | } | |
808 | } | |
809 | ||
b34976b6 | 810 | return TRUE; |
252b5132 RH |
811 | } |
812 | ||
813 | /* | |
814 | INTERNAL_FUNCTION | |
815 | bfd_elf_find_section | |
816 | ||
817 | SYNOPSIS | |
818 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
819 | ||
820 | DESCRIPTION | |
821 | Helper functions for GDB to locate the string tables. | |
822 | Since BFD hides string tables from callers, GDB needs to use an | |
823 | internal hook to find them. Sun's .stabstr, in particular, | |
824 | isn't even pointed to by the .stab section, so ordinary | |
825 | mechanisms wouldn't work to find it, even if we had some. | |
826 | */ | |
827 | ||
828 | struct elf_internal_shdr * | |
217aa764 | 829 | bfd_elf_find_section (bfd *abfd, char *name) |
252b5132 RH |
830 | { |
831 | Elf_Internal_Shdr **i_shdrp; | |
832 | char *shstrtab; | |
833 | unsigned int max; | |
834 | unsigned int i; | |
835 | ||
836 | i_shdrp = elf_elfsections (abfd); | |
837 | if (i_shdrp != NULL) | |
838 | { | |
9ad5cbcf AM |
839 | shstrtab = bfd_elf_get_str_section (abfd, |
840 | elf_elfheader (abfd)->e_shstrndx); | |
252b5132 RH |
841 | if (shstrtab != NULL) |
842 | { | |
9ad5cbcf | 843 | max = elf_numsections (abfd); |
252b5132 RH |
844 | for (i = 1; i < max; i++) |
845 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
846 | return i_shdrp[i]; | |
847 | } | |
848 | } | |
849 | return 0; | |
850 | } | |
851 | ||
852 | const char *const bfd_elf_section_type_names[] = { | |
853 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
854 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
855 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
856 | }; | |
857 | ||
1049f94e | 858 | /* ELF relocs are against symbols. If we are producing relocatable |
252b5132 RH |
859 | output, and the reloc is against an external symbol, and nothing |
860 | has given us any additional addend, the resulting reloc will also | |
861 | be against the same symbol. In such a case, we don't want to | |
862 | change anything about the way the reloc is handled, since it will | |
863 | all be done at final link time. Rather than put special case code | |
864 | into bfd_perform_relocation, all the reloc types use this howto | |
865 | function. It just short circuits the reloc if producing | |
1049f94e | 866 | relocatable output against an external symbol. */ |
252b5132 | 867 | |
252b5132 | 868 | bfd_reloc_status_type |
217aa764 AM |
869 | bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
870 | arelent *reloc_entry, | |
871 | asymbol *symbol, | |
872 | void *data ATTRIBUTE_UNUSED, | |
873 | asection *input_section, | |
874 | bfd *output_bfd, | |
875 | char **error_message ATTRIBUTE_UNUSED) | |
876 | { | |
877 | if (output_bfd != NULL | |
252b5132 RH |
878 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
879 | && (! reloc_entry->howto->partial_inplace | |
880 | || reloc_entry->addend == 0)) | |
881 | { | |
882 | reloc_entry->address += input_section->output_offset; | |
883 | return bfd_reloc_ok; | |
884 | } | |
885 | ||
886 | return bfd_reloc_continue; | |
887 | } | |
888 | \f | |
d3c456e9 JJ |
889 | /* Make sure sec_info_type is cleared if sec_info is cleared too. */ |
890 | ||
891 | static void | |
217aa764 AM |
892 | merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED, |
893 | asection *sec) | |
d3c456e9 | 894 | { |
68bfbfcc AM |
895 | BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE); |
896 | sec->sec_info_type = ELF_INFO_TYPE_NONE; | |
d3c456e9 JJ |
897 | } |
898 | ||
8550eb6e JJ |
899 | /* Finish SHF_MERGE section merging. */ |
900 | ||
b34976b6 | 901 | bfd_boolean |
217aa764 | 902 | _bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) |
8550eb6e | 903 | { |
0eddce27 | 904 | if (!is_elf_hash_table (info->hash)) |
b34976b6 | 905 | return FALSE; |
b0f35f36 | 906 | if (elf_hash_table (info)->merge_info) |
d3c456e9 JJ |
907 | _bfd_merge_sections (abfd, elf_hash_table (info)->merge_info, |
908 | merge_sections_remove_hook); | |
b34976b6 | 909 | return TRUE; |
8550eb6e | 910 | } |
2d653fc7 AM |
911 | |
912 | void | |
217aa764 | 913 | _bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) |
2d653fc7 AM |
914 | { |
915 | sec->output_section = bfd_abs_section_ptr; | |
916 | sec->output_offset = sec->vma; | |
0eddce27 | 917 | if (!is_elf_hash_table (info->hash)) |
2d653fc7 AM |
918 | return; |
919 | ||
68bfbfcc | 920 | sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS; |
2d653fc7 | 921 | } |
8550eb6e | 922 | \f |
0ac4564e L |
923 | /* Copy the program header and other data from one object module to |
924 | another. */ | |
252b5132 | 925 | |
b34976b6 | 926 | bfd_boolean |
217aa764 | 927 | _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
2d502050 L |
928 | { |
929 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
930 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 931 | return TRUE; |
2d502050 L |
932 | |
933 | BFD_ASSERT (!elf_flags_init (obfd) | |
934 | || (elf_elfheader (obfd)->e_flags | |
935 | == elf_elfheader (ibfd)->e_flags)); | |
936 | ||
0ac4564e | 937 | elf_gp (obfd) = elf_gp (ibfd); |
2d502050 | 938 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
b34976b6 AM |
939 | elf_flags_init (obfd) = TRUE; |
940 | return TRUE; | |
2d502050 L |
941 | } |
942 | ||
f0b79d91 L |
943 | /* Print out the program headers. */ |
944 | ||
b34976b6 | 945 | bfd_boolean |
217aa764 | 946 | _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) |
252b5132 | 947 | { |
217aa764 | 948 | FILE *f = farg; |
252b5132 RH |
949 | Elf_Internal_Phdr *p; |
950 | asection *s; | |
951 | bfd_byte *dynbuf = NULL; | |
952 | ||
953 | p = elf_tdata (abfd)->phdr; | |
954 | if (p != NULL) | |
955 | { | |
956 | unsigned int i, c; | |
957 | ||
958 | fprintf (f, _("\nProgram Header:\n")); | |
959 | c = elf_elfheader (abfd)->e_phnum; | |
960 | for (i = 0; i < c; i++, p++) | |
961 | { | |
dc810e39 | 962 | const char *pt; |
252b5132 RH |
963 | char buf[20]; |
964 | ||
965 | switch (p->p_type) | |
966 | { | |
dc810e39 AM |
967 | case PT_NULL: pt = "NULL"; break; |
968 | case PT_LOAD: pt = "LOAD"; break; | |
969 | case PT_DYNAMIC: pt = "DYNAMIC"; break; | |
970 | case PT_INTERP: pt = "INTERP"; break; | |
971 | case PT_NOTE: pt = "NOTE"; break; | |
972 | case PT_SHLIB: pt = "SHLIB"; break; | |
973 | case PT_PHDR: pt = "PHDR"; break; | |
13ae64f3 | 974 | case PT_TLS: pt = "TLS"; break; |
65765700 | 975 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
9ee5e499 | 976 | case PT_GNU_STACK: pt = "STACK"; break; |
8c37241b | 977 | case PT_GNU_RELRO: pt = "RELRO"; break; |
dc810e39 | 978 | default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; |
252b5132 | 979 | } |
dc810e39 | 980 | fprintf (f, "%8s off 0x", pt); |
60b89a18 | 981 | bfd_fprintf_vma (abfd, f, p->p_offset); |
252b5132 | 982 | fprintf (f, " vaddr 0x"); |
60b89a18 | 983 | bfd_fprintf_vma (abfd, f, p->p_vaddr); |
252b5132 | 984 | fprintf (f, " paddr 0x"); |
60b89a18 | 985 | bfd_fprintf_vma (abfd, f, p->p_paddr); |
252b5132 RH |
986 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); |
987 | fprintf (f, " filesz 0x"); | |
60b89a18 | 988 | bfd_fprintf_vma (abfd, f, p->p_filesz); |
252b5132 | 989 | fprintf (f, " memsz 0x"); |
60b89a18 | 990 | bfd_fprintf_vma (abfd, f, p->p_memsz); |
252b5132 RH |
991 | fprintf (f, " flags %c%c%c", |
992 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
993 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
994 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
dc810e39 AM |
995 | if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0) |
996 | fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)); | |
252b5132 RH |
997 | fprintf (f, "\n"); |
998 | } | |
999 | } | |
1000 | ||
1001 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1002 | if (s != NULL) | |
1003 | { | |
1004 | int elfsec; | |
dc810e39 | 1005 | unsigned long shlink; |
252b5132 RH |
1006 | bfd_byte *extdyn, *extdynend; |
1007 | size_t extdynsize; | |
217aa764 | 1008 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1009 | |
1010 | fprintf (f, _("\nDynamic Section:\n")); | |
1011 | ||
217aa764 | 1012 | dynbuf = bfd_malloc (s->_raw_size); |
252b5132 RH |
1013 | if (dynbuf == NULL) |
1014 | goto error_return; | |
217aa764 | 1015 | if (! bfd_get_section_contents (abfd, s, dynbuf, 0, s->_raw_size)) |
252b5132 RH |
1016 | goto error_return; |
1017 | ||
1018 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1019 | if (elfsec == -1) | |
1020 | goto error_return; | |
dc810e39 | 1021 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1022 | |
1023 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1024 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1025 | ||
1026 | extdyn = dynbuf; | |
1027 | extdynend = extdyn + s->_raw_size; | |
1028 | for (; extdyn < extdynend; extdyn += extdynsize) | |
1029 | { | |
1030 | Elf_Internal_Dyn dyn; | |
1031 | const char *name; | |
1032 | char ab[20]; | |
b34976b6 | 1033 | bfd_boolean stringp; |
252b5132 | 1034 | |
217aa764 | 1035 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1036 | |
1037 | if (dyn.d_tag == DT_NULL) | |
1038 | break; | |
1039 | ||
b34976b6 | 1040 | stringp = FALSE; |
252b5132 RH |
1041 | switch (dyn.d_tag) |
1042 | { | |
1043 | default: | |
1044 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); | |
1045 | name = ab; | |
1046 | break; | |
1047 | ||
b34976b6 | 1048 | case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; |
252b5132 RH |
1049 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; |
1050 | case DT_PLTGOT: name = "PLTGOT"; break; | |
1051 | case DT_HASH: name = "HASH"; break; | |
1052 | case DT_STRTAB: name = "STRTAB"; break; | |
1053 | case DT_SYMTAB: name = "SYMTAB"; break; | |
1054 | case DT_RELA: name = "RELA"; break; | |
1055 | case DT_RELASZ: name = "RELASZ"; break; | |
1056 | case DT_RELAENT: name = "RELAENT"; break; | |
1057 | case DT_STRSZ: name = "STRSZ"; break; | |
1058 | case DT_SYMENT: name = "SYMENT"; break; | |
1059 | case DT_INIT: name = "INIT"; break; | |
1060 | case DT_FINI: name = "FINI"; break; | |
b34976b6 AM |
1061 | case DT_SONAME: name = "SONAME"; stringp = TRUE; break; |
1062 | case DT_RPATH: name = "RPATH"; stringp = TRUE; break; | |
252b5132 RH |
1063 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; |
1064 | case DT_REL: name = "REL"; break; | |
1065 | case DT_RELSZ: name = "RELSZ"; break; | |
1066 | case DT_RELENT: name = "RELENT"; break; | |
1067 | case DT_PLTREL: name = "PLTREL"; break; | |
1068 | case DT_DEBUG: name = "DEBUG"; break; | |
1069 | case DT_TEXTREL: name = "TEXTREL"; break; | |
1070 | case DT_JMPREL: name = "JMPREL"; break; | |
94558834 L |
1071 | case DT_BIND_NOW: name = "BIND_NOW"; break; |
1072 | case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; | |
1073 | case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; | |
1074 | case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; | |
1075 | case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; | |
b34976b6 | 1076 | case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; |
94558834 L |
1077 | case DT_FLAGS: name = "FLAGS"; break; |
1078 | case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; | |
1079 | case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; | |
d48188b9 | 1080 | case DT_CHECKSUM: name = "CHECKSUM"; break; |
94558834 L |
1081 | case DT_PLTPADSZ: name = "PLTPADSZ"; break; |
1082 | case DT_MOVEENT: name = "MOVEENT"; break; | |
1083 | case DT_MOVESZ: name = "MOVESZ"; break; | |
1084 | case DT_FEATURE: name = "FEATURE"; break; | |
1085 | case DT_POSFLAG_1: name = "POSFLAG_1"; break; | |
1086 | case DT_SYMINSZ: name = "SYMINSZ"; break; | |
1087 | case DT_SYMINENT: name = "SYMINENT"; break; | |
b34976b6 AM |
1088 | case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; |
1089 | case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; | |
1090 | case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; | |
94558834 L |
1091 | case DT_PLTPAD: name = "PLTPAD"; break; |
1092 | case DT_MOVETAB: name = "MOVETAB"; break; | |
1093 | case DT_SYMINFO: name = "SYMINFO"; break; | |
1094 | case DT_RELACOUNT: name = "RELACOUNT"; break; | |
1095 | case DT_RELCOUNT: name = "RELCOUNT"; break; | |
1096 | case DT_FLAGS_1: name = "FLAGS_1"; break; | |
252b5132 RH |
1097 | case DT_VERSYM: name = "VERSYM"; break; |
1098 | case DT_VERDEF: name = "VERDEF"; break; | |
1099 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
1100 | case DT_VERNEED: name = "VERNEED"; break; | |
1101 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
b34976b6 | 1102 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; |
94558834 | 1103 | case DT_USED: name = "USED"; break; |
b34976b6 | 1104 | case DT_FILTER: name = "FILTER"; stringp = TRUE; break; |
252b5132 RH |
1105 | } |
1106 | ||
1107 | fprintf (f, " %-11s ", name); | |
1108 | if (! stringp) | |
1109 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); | |
1110 | else | |
1111 | { | |
1112 | const char *string; | |
dc810e39 | 1113 | unsigned int tagv = dyn.d_un.d_val; |
252b5132 | 1114 | |
dc810e39 | 1115 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1116 | if (string == NULL) |
1117 | goto error_return; | |
1118 | fprintf (f, "%s", string); | |
1119 | } | |
1120 | fprintf (f, "\n"); | |
1121 | } | |
1122 | ||
1123 | free (dynbuf); | |
1124 | dynbuf = NULL; | |
1125 | } | |
1126 | ||
1127 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) | |
1128 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
1129 | { | |
1130 | if (! _bfd_elf_slurp_version_tables (abfd)) | |
b34976b6 | 1131 | return FALSE; |
252b5132 RH |
1132 | } |
1133 | ||
1134 | if (elf_dynverdef (abfd) != 0) | |
1135 | { | |
1136 | Elf_Internal_Verdef *t; | |
1137 | ||
1138 | fprintf (f, _("\nVersion definitions:\n")); | |
1139 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) | |
1140 | { | |
1141 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
1142 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
1143 | if (t->vd_auxptr->vda_nextptr != NULL) | |
1144 | { | |
1145 | Elf_Internal_Verdaux *a; | |
1146 | ||
1147 | fprintf (f, "\t"); | |
1148 | for (a = t->vd_auxptr->vda_nextptr; | |
1149 | a != NULL; | |
1150 | a = a->vda_nextptr) | |
1151 | fprintf (f, "%s ", a->vda_nodename); | |
1152 | fprintf (f, "\n"); | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | if (elf_dynverref (abfd) != 0) | |
1158 | { | |
1159 | Elf_Internal_Verneed *t; | |
1160 | ||
1161 | fprintf (f, _("\nVersion References:\n")); | |
1162 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) | |
1163 | { | |
1164 | Elf_Internal_Vernaux *a; | |
1165 | ||
1166 | fprintf (f, _(" required from %s:\n"), t->vn_filename); | |
1167 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1168 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
1169 | a->vna_flags, a->vna_other, a->vna_nodename); | |
1170 | } | |
1171 | } | |
1172 | ||
b34976b6 | 1173 | return TRUE; |
252b5132 RH |
1174 | |
1175 | error_return: | |
1176 | if (dynbuf != NULL) | |
1177 | free (dynbuf); | |
b34976b6 | 1178 | return FALSE; |
252b5132 RH |
1179 | } |
1180 | ||
1181 | /* Display ELF-specific fields of a symbol. */ | |
1182 | ||
1183 | void | |
217aa764 AM |
1184 | bfd_elf_print_symbol (bfd *abfd, |
1185 | void *filep, | |
1186 | asymbol *symbol, | |
1187 | bfd_print_symbol_type how) | |
252b5132 | 1188 | { |
217aa764 | 1189 | FILE *file = filep; |
252b5132 RH |
1190 | switch (how) |
1191 | { | |
1192 | case bfd_print_symbol_name: | |
1193 | fprintf (file, "%s", symbol->name); | |
1194 | break; | |
1195 | case bfd_print_symbol_more: | |
1196 | fprintf (file, "elf "); | |
60b89a18 | 1197 | bfd_fprintf_vma (abfd, file, symbol->value); |
252b5132 RH |
1198 | fprintf (file, " %lx", (long) symbol->flags); |
1199 | break; | |
1200 | case bfd_print_symbol_all: | |
1201 | { | |
4e8a9624 AM |
1202 | const char *section_name; |
1203 | const char *name = NULL; | |
9c5bfbb7 | 1204 | const struct elf_backend_data *bed; |
7a13edea | 1205 | unsigned char st_other; |
dbb410c3 | 1206 | bfd_vma val; |
c044fabd | 1207 | |
252b5132 | 1208 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
587ff49e RH |
1209 | |
1210 | bed = get_elf_backend_data (abfd); | |
1211 | if (bed->elf_backend_print_symbol_all) | |
c044fabd | 1212 | name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol); |
587ff49e RH |
1213 | |
1214 | if (name == NULL) | |
1215 | { | |
7ee38065 | 1216 | name = symbol->name; |
217aa764 | 1217 | bfd_print_symbol_vandf (abfd, file, symbol); |
587ff49e RH |
1218 | } |
1219 | ||
252b5132 RH |
1220 | fprintf (file, " %s\t", section_name); |
1221 | /* Print the "other" value for a symbol. For common symbols, | |
1222 | we've already printed the size; now print the alignment. | |
1223 | For other symbols, we have no specified alignment, and | |
1224 | we've printed the address; now print the size. */ | |
dbb410c3 AM |
1225 | if (bfd_is_com_section (symbol->section)) |
1226 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; | |
1227 | else | |
1228 | val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size; | |
1229 | bfd_fprintf_vma (abfd, file, val); | |
252b5132 RH |
1230 | |
1231 | /* If we have version information, print it. */ | |
1232 | if (elf_tdata (abfd)->dynversym_section != 0 | |
1233 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
1234 | || elf_tdata (abfd)->dynverref_section != 0)) | |
1235 | { | |
1236 | unsigned int vernum; | |
1237 | const char *version_string; | |
1238 | ||
1239 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
1240 | ||
1241 | if (vernum == 0) | |
1242 | version_string = ""; | |
1243 | else if (vernum == 1) | |
1244 | version_string = "Base"; | |
1245 | else if (vernum <= elf_tdata (abfd)->cverdefs) | |
1246 | version_string = | |
1247 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
1248 | else | |
1249 | { | |
1250 | Elf_Internal_Verneed *t; | |
1251 | ||
1252 | version_string = ""; | |
1253 | for (t = elf_tdata (abfd)->verref; | |
1254 | t != NULL; | |
1255 | t = t->vn_nextref) | |
1256 | { | |
1257 | Elf_Internal_Vernaux *a; | |
1258 | ||
1259 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
1260 | { | |
1261 | if (a->vna_other == vernum) | |
1262 | { | |
1263 | version_string = a->vna_nodename; | |
1264 | break; | |
1265 | } | |
1266 | } | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
1271 | fprintf (file, " %-11s", version_string); | |
1272 | else | |
1273 | { | |
1274 | int i; | |
1275 | ||
1276 | fprintf (file, " (%s)", version_string); | |
1277 | for (i = 10 - strlen (version_string); i > 0; --i) | |
1278 | putc (' ', file); | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | /* If the st_other field is not zero, print it. */ | |
7a13edea | 1283 | st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other; |
c044fabd | 1284 | |
7a13edea NC |
1285 | switch (st_other) |
1286 | { | |
1287 | case 0: break; | |
1288 | case STV_INTERNAL: fprintf (file, " .internal"); break; | |
1289 | case STV_HIDDEN: fprintf (file, " .hidden"); break; | |
1290 | case STV_PROTECTED: fprintf (file, " .protected"); break; | |
1291 | default: | |
1292 | /* Some other non-defined flags are also present, so print | |
1293 | everything hex. */ | |
1294 | fprintf (file, " 0x%02x", (unsigned int) st_other); | |
1295 | } | |
252b5132 | 1296 | |
587ff49e | 1297 | fprintf (file, " %s", name); |
252b5132 RH |
1298 | } |
1299 | break; | |
1300 | } | |
1301 | } | |
1302 | \f | |
1303 | /* Create an entry in an ELF linker hash table. */ | |
1304 | ||
1305 | struct bfd_hash_entry * | |
217aa764 AM |
1306 | _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
1307 | struct bfd_hash_table *table, | |
1308 | const char *string) | |
252b5132 | 1309 | { |
252b5132 RH |
1310 | /* Allocate the structure if it has not already been allocated by a |
1311 | subclass. */ | |
51b64d56 AM |
1312 | if (entry == NULL) |
1313 | { | |
1314 | entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)); | |
1315 | if (entry == NULL) | |
1316 | return entry; | |
1317 | } | |
252b5132 RH |
1318 | |
1319 | /* Call the allocation method of the superclass. */ | |
51b64d56 AM |
1320 | entry = _bfd_link_hash_newfunc (entry, table, string); |
1321 | if (entry != NULL) | |
252b5132 | 1322 | { |
51b64d56 AM |
1323 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; |
1324 | struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table; | |
1325 | ||
252b5132 RH |
1326 | /* Set local fields. */ |
1327 | ret->indx = -1; | |
252b5132 RH |
1328 | ret->dynindx = -1; |
1329 | ret->dynstr_index = 0; | |
73722af0 | 1330 | ret->elf_hash_value = 0; |
252b5132 | 1331 | ret->weakdef = NULL; |
252b5132 | 1332 | ret->verinfo.verdef = NULL; |
252b5132 | 1333 | ret->vtable_entries_size = 0; |
73722af0 | 1334 | ret->vtable_entries_used = NULL; |
252b5132 | 1335 | ret->vtable_parent = NULL; |
5cab59f6 AM |
1336 | ret->got = htab->init_refcount; |
1337 | ret->plt = htab->init_refcount; | |
73722af0 | 1338 | ret->size = 0; |
252b5132 RH |
1339 | ret->type = STT_NOTYPE; |
1340 | ret->other = 0; | |
1341 | /* Assume that we have been called by a non-ELF symbol reader. | |
1342 | This flag is then reset by the code which reads an ELF input | |
1343 | file. This ensures that a symbol created by a non-ELF symbol | |
1344 | reader will have the flag set correctly. */ | |
1345 | ret->elf_link_hash_flags = ELF_LINK_NON_ELF; | |
1346 | } | |
1347 | ||
51b64d56 | 1348 | return entry; |
252b5132 RH |
1349 | } |
1350 | ||
2920b85c | 1351 | /* Copy data from an indirect symbol to its direct symbol, hiding the |
0a991dfe | 1352 | old indirect symbol. Also used for copying flags to a weakdef. */ |
2920b85c | 1353 | |
c61b8717 | 1354 | void |
9c5bfbb7 | 1355 | _bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed, |
217aa764 AM |
1356 | struct elf_link_hash_entry *dir, |
1357 | struct elf_link_hash_entry *ind) | |
2920b85c | 1358 | { |
3c3e9281 | 1359 | bfd_signed_vma tmp; |
b48fa14c | 1360 | bfd_signed_vma lowest_valid = bed->can_refcount; |
3c3e9281 | 1361 | |
2920b85c RH |
1362 | /* Copy down any references that we may have already seen to the |
1363 | symbol which just became indirect. */ | |
1364 | ||
3addb0a9 | 1365 | dir->elf_link_hash_flags |
0eddce27 AM |
1366 | |= ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC |
1367 | | ELF_LINK_HASH_REF_REGULAR | |
1368 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
1369 | | ELF_LINK_NON_GOT_REF | |
1370 | | ELF_LINK_HASH_NEEDS_PLT | |
1371 | | ELF_LINK_POINTER_EQUALITY_NEEDED); | |
2920b85c | 1372 | |
1e370bd2 | 1373 | if (ind->root.type != bfd_link_hash_indirect) |
0a991dfe AM |
1374 | return; |
1375 | ||
51b64d56 | 1376 | /* Copy over the global and procedure linkage table refcount entries. |
2920b85c | 1377 | These may have been already set up by a check_relocs routine. */ |
3c3e9281 | 1378 | tmp = dir->got.refcount; |
b48fa14c | 1379 | if (tmp < lowest_valid) |
2920b85c | 1380 | { |
51b64d56 | 1381 | dir->got.refcount = ind->got.refcount; |
3c3e9281 | 1382 | ind->got.refcount = tmp; |
2920b85c | 1383 | } |
3c3e9281 | 1384 | else |
b48fa14c | 1385 | BFD_ASSERT (ind->got.refcount < lowest_valid); |
2920b85c | 1386 | |
3c3e9281 | 1387 | tmp = dir->plt.refcount; |
b48fa14c | 1388 | if (tmp < lowest_valid) |
2920b85c | 1389 | { |
51b64d56 | 1390 | dir->plt.refcount = ind->plt.refcount; |
3c3e9281 | 1391 | ind->plt.refcount = tmp; |
2920b85c | 1392 | } |
3c3e9281 | 1393 | else |
b48fa14c | 1394 | BFD_ASSERT (ind->plt.refcount < lowest_valid); |
2920b85c RH |
1395 | |
1396 | if (dir->dynindx == -1) | |
1397 | { | |
1398 | dir->dynindx = ind->dynindx; | |
1399 | dir->dynstr_index = ind->dynstr_index; | |
1400 | ind->dynindx = -1; | |
1401 | ind->dynstr_index = 0; | |
1402 | } | |
3c3e9281 AM |
1403 | else |
1404 | BFD_ASSERT (ind->dynindx == -1); | |
2920b85c RH |
1405 | } |
1406 | ||
c61b8717 | 1407 | void |
217aa764 AM |
1408 | _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info, |
1409 | struct elf_link_hash_entry *h, | |
1410 | bfd_boolean force_local) | |
2920b85c | 1411 | { |
5cab59f6 | 1412 | h->plt = elf_hash_table (info)->init_offset; |
e5094212 AM |
1413 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1414 | if (force_local) | |
1415 | { | |
1416 | h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL; | |
1417 | if (h->dynindx != -1) | |
1418 | { | |
1419 | h->dynindx = -1; | |
1420 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
1421 | h->dynstr_index); | |
1422 | } | |
1423 | } | |
2920b85c RH |
1424 | } |
1425 | ||
252b5132 RH |
1426 | /* Initialize an ELF linker hash table. */ |
1427 | ||
b34976b6 | 1428 | bfd_boolean |
217aa764 AM |
1429 | _bfd_elf_link_hash_table_init |
1430 | (struct elf_link_hash_table *table, | |
1431 | bfd *abfd, | |
1432 | struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *, | |
1433 | struct bfd_hash_table *, | |
1434 | const char *)) | |
252b5132 | 1435 | { |
b34976b6 | 1436 | bfd_boolean ret; |
8ea2e4bd | 1437 | |
b34976b6 | 1438 | table->dynamic_sections_created = FALSE; |
252b5132 | 1439 | table->dynobj = NULL; |
963f13ec AO |
1440 | /* Make sure can_refcount is extended to the width and signedness of |
1441 | init_refcount before we subtract one from it. */ | |
5cab59f6 AM |
1442 | table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; |
1443 | table->init_refcount.refcount -= 1; | |
1444 | table->init_offset.offset = -(bfd_vma) 1; | |
252b5132 RH |
1445 | /* The first dynamic symbol is a dummy. */ |
1446 | table->dynsymcount = 1; | |
1447 | table->dynstr = NULL; | |
1448 | table->bucketcount = 0; | |
1449 | table->needed = NULL; | |
1450 | table->hgot = NULL; | |
1451 | table->stab_info = NULL; | |
f5fa8ca2 | 1452 | table->merge_info = NULL; |
73722af0 | 1453 | memset (&table->eh_info, 0, sizeof (table->eh_info)); |
1ae00f9d | 1454 | table->dynlocal = NULL; |
73722af0 | 1455 | table->runpath = NULL; |
e1918d23 AM |
1456 | table->tls_sec = NULL; |
1457 | table->tls_size = 0; | |
73722af0 AM |
1458 | table->loaded = NULL; |
1459 | ||
1460 | ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
8ea2e4bd NC |
1461 | table->root.type = bfd_link_elf_hash_table; |
1462 | ||
1463 | return ret; | |
252b5132 RH |
1464 | } |
1465 | ||
1466 | /* Create an ELF linker hash table. */ | |
1467 | ||
1468 | struct bfd_link_hash_table * | |
217aa764 | 1469 | _bfd_elf_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1470 | { |
1471 | struct elf_link_hash_table *ret; | |
dc810e39 | 1472 | bfd_size_type amt = sizeof (struct elf_link_hash_table); |
252b5132 | 1473 | |
217aa764 AM |
1474 | ret = bfd_malloc (amt); |
1475 | if (ret == NULL) | |
252b5132 RH |
1476 | return NULL; |
1477 | ||
1478 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
1479 | { | |
e2d34d7d | 1480 | free (ret); |
252b5132 RH |
1481 | return NULL; |
1482 | } | |
1483 | ||
1484 | return &ret->root; | |
1485 | } | |
1486 | ||
1487 | /* This is a hook for the ELF emulation code in the generic linker to | |
1488 | tell the backend linker what file name to use for the DT_NEEDED | |
4a43e768 | 1489 | entry for a dynamic object. */ |
252b5132 RH |
1490 | |
1491 | void | |
217aa764 | 1492 | bfd_elf_set_dt_needed_name (bfd *abfd, const char *name) |
252b5132 RH |
1493 | { |
1494 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1495 | && bfd_get_format (abfd) == bfd_object) | |
1496 | elf_dt_name (abfd) = name; | |
1497 | } | |
1498 | ||
74816898 | 1499 | void |
4a43e768 | 1500 | bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class) |
74816898 L |
1501 | { |
1502 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1503 | && bfd_get_format (abfd) == bfd_object) | |
4a43e768 | 1504 | elf_dyn_lib_class (abfd) = lib_class; |
74816898 L |
1505 | } |
1506 | ||
252b5132 RH |
1507 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
1508 | the linker ELF emulation code. */ | |
1509 | ||
1510 | struct bfd_link_needed_list * | |
217aa764 AM |
1511 | bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, |
1512 | struct bfd_link_info *info) | |
252b5132 | 1513 | { |
0eddce27 | 1514 | if (! is_elf_hash_table (info->hash)) |
252b5132 RH |
1515 | return NULL; |
1516 | return elf_hash_table (info)->needed; | |
1517 | } | |
1518 | ||
a963dc6a L |
1519 | /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a |
1520 | hook for the linker ELF emulation code. */ | |
1521 | ||
1522 | struct bfd_link_needed_list * | |
217aa764 AM |
1523 | bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED, |
1524 | struct bfd_link_info *info) | |
a963dc6a | 1525 | { |
0eddce27 | 1526 | if (! is_elf_hash_table (info->hash)) |
a963dc6a L |
1527 | return NULL; |
1528 | return elf_hash_table (info)->runpath; | |
1529 | } | |
1530 | ||
252b5132 RH |
1531 | /* Get the name actually used for a dynamic object for a link. This |
1532 | is the SONAME entry if there is one. Otherwise, it is the string | |
1533 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
1534 | ||
1535 | const char * | |
217aa764 | 1536 | bfd_elf_get_dt_soname (bfd *abfd) |
252b5132 RH |
1537 | { |
1538 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
1539 | && bfd_get_format (abfd) == bfd_object) | |
1540 | return elf_dt_name (abfd); | |
1541 | return NULL; | |
1542 | } | |
1543 | ||
1544 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
1545 | the ELF linker emulation code. */ | |
1546 | ||
b34976b6 | 1547 | bfd_boolean |
217aa764 AM |
1548 | bfd_elf_get_bfd_needed_list (bfd *abfd, |
1549 | struct bfd_link_needed_list **pneeded) | |
252b5132 RH |
1550 | { |
1551 | asection *s; | |
1552 | bfd_byte *dynbuf = NULL; | |
1553 | int elfsec; | |
dc810e39 | 1554 | unsigned long shlink; |
252b5132 RH |
1555 | bfd_byte *extdyn, *extdynend; |
1556 | size_t extdynsize; | |
217aa764 | 1557 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 RH |
1558 | |
1559 | *pneeded = NULL; | |
1560 | ||
1561 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1562 | || bfd_get_format (abfd) != bfd_object) | |
b34976b6 | 1563 | return TRUE; |
252b5132 RH |
1564 | |
1565 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
1566 | if (s == NULL || s->_raw_size == 0) | |
b34976b6 | 1567 | return TRUE; |
252b5132 | 1568 | |
217aa764 | 1569 | dynbuf = bfd_malloc (s->_raw_size); |
252b5132 RH |
1570 | if (dynbuf == NULL) |
1571 | goto error_return; | |
1572 | ||
217aa764 | 1573 | if (! bfd_get_section_contents (abfd, s, dynbuf, 0, s->_raw_size)) |
252b5132 RH |
1574 | goto error_return; |
1575 | ||
1576 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
1577 | if (elfsec == -1) | |
1578 | goto error_return; | |
1579 | ||
dc810e39 | 1580 | shlink = elf_elfsections (abfd)[elfsec]->sh_link; |
252b5132 RH |
1581 | |
1582 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
1583 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
1584 | ||
1585 | extdyn = dynbuf; | |
1586 | extdynend = extdyn + s->_raw_size; | |
1587 | for (; extdyn < extdynend; extdyn += extdynsize) | |
1588 | { | |
1589 | Elf_Internal_Dyn dyn; | |
1590 | ||
217aa764 | 1591 | (*swap_dyn_in) (abfd, extdyn, &dyn); |
252b5132 RH |
1592 | |
1593 | if (dyn.d_tag == DT_NULL) | |
1594 | break; | |
1595 | ||
1596 | if (dyn.d_tag == DT_NEEDED) | |
1597 | { | |
1598 | const char *string; | |
1599 | struct bfd_link_needed_list *l; | |
dc810e39 AM |
1600 | unsigned int tagv = dyn.d_un.d_val; |
1601 | bfd_size_type amt; | |
252b5132 | 1602 | |
dc810e39 | 1603 | string = bfd_elf_string_from_elf_section (abfd, shlink, tagv); |
252b5132 RH |
1604 | if (string == NULL) |
1605 | goto error_return; | |
1606 | ||
dc810e39 | 1607 | amt = sizeof *l; |
217aa764 | 1608 | l = bfd_alloc (abfd, amt); |
252b5132 RH |
1609 | if (l == NULL) |
1610 | goto error_return; | |
1611 | ||
1612 | l->by = abfd; | |
1613 | l->name = string; | |
1614 | l->next = *pneeded; | |
1615 | *pneeded = l; | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | free (dynbuf); | |
1620 | ||
b34976b6 | 1621 | return TRUE; |
252b5132 RH |
1622 | |
1623 | error_return: | |
1624 | if (dynbuf != NULL) | |
1625 | free (dynbuf); | |
b34976b6 | 1626 | return FALSE; |
252b5132 RH |
1627 | } |
1628 | \f | |
1629 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1630 | ||
1631 | struct bfd_strtab_hash * | |
217aa764 | 1632 | _bfd_elf_stringtab_init (void) |
252b5132 RH |
1633 | { |
1634 | struct bfd_strtab_hash *ret; | |
1635 | ||
1636 | ret = _bfd_stringtab_init (); | |
1637 | if (ret != NULL) | |
1638 | { | |
1639 | bfd_size_type loc; | |
1640 | ||
b34976b6 | 1641 | loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); |
252b5132 RH |
1642 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); |
1643 | if (loc == (bfd_size_type) -1) | |
1644 | { | |
1645 | _bfd_stringtab_free (ret); | |
1646 | ret = NULL; | |
1647 | } | |
1648 | } | |
1649 | return ret; | |
1650 | } | |
1651 | \f | |
1652 | /* ELF .o/exec file reading */ | |
1653 | ||
c044fabd | 1654 | /* Create a new bfd section from an ELF section header. */ |
252b5132 | 1655 | |
b34976b6 | 1656 | bfd_boolean |
217aa764 | 1657 | bfd_section_from_shdr (bfd *abfd, unsigned int shindex) |
252b5132 RH |
1658 | { |
1659 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1660 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
9c5bfbb7 | 1661 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
90937f86 | 1662 | const char *name; |
252b5132 RH |
1663 | |
1664 | name = elf_string_from_elf_strtab (abfd, hdr->sh_name); | |
1665 | ||
1666 | switch (hdr->sh_type) | |
1667 | { | |
1668 | case SHT_NULL: | |
1669 | /* Inactive section. Throw it away. */ | |
b34976b6 | 1670 | return TRUE; |
252b5132 RH |
1671 | |
1672 | case SHT_PROGBITS: /* Normal section with contents. */ | |
252b5132 RH |
1673 | case SHT_NOBITS: /* .bss section. */ |
1674 | case SHT_HASH: /* .hash section. */ | |
1675 | case SHT_NOTE: /* .note section. */ | |
25e27870 L |
1676 | case SHT_INIT_ARRAY: /* .init_array section. */ |
1677 | case SHT_FINI_ARRAY: /* .fini_array section. */ | |
1678 | case SHT_PREINIT_ARRAY: /* .preinit_array section. */ | |
252b5132 RH |
1679 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
1680 | ||
797fc050 AM |
1681 | case SHT_DYNAMIC: /* Dynamic linking information. */ |
1682 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 1683 | return FALSE; |
797fc050 AM |
1684 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB) |
1685 | { | |
1686 | Elf_Internal_Shdr *dynsymhdr; | |
1687 | ||
1688 | /* The shared libraries distributed with hpux11 have a bogus | |
1689 | sh_link field for the ".dynamic" section. Find the | |
1690 | string table for the ".dynsym" section instead. */ | |
1691 | if (elf_dynsymtab (abfd) != 0) | |
1692 | { | |
1693 | dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)]; | |
1694 | hdr->sh_link = dynsymhdr->sh_link; | |
1695 | } | |
1696 | else | |
1697 | { | |
1698 | unsigned int i, num_sec; | |
1699 | ||
1700 | num_sec = elf_numsections (abfd); | |
1701 | for (i = 1; i < num_sec; i++) | |
1702 | { | |
1703 | dynsymhdr = elf_elfsections (abfd)[i]; | |
1704 | if (dynsymhdr->sh_type == SHT_DYNSYM) | |
1705 | { | |
1706 | hdr->sh_link = dynsymhdr->sh_link; | |
1707 | break; | |
1708 | } | |
1709 | } | |
1710 | } | |
1711 | } | |
1712 | break; | |
1713 | ||
252b5132 RH |
1714 | case SHT_SYMTAB: /* A symbol table */ |
1715 | if (elf_onesymtab (abfd) == shindex) | |
b34976b6 | 1716 | return TRUE; |
252b5132 RH |
1717 | |
1718 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1719 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1720 | elf_onesymtab (abfd) = shindex; | |
1721 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
1722 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; | |
1723 | abfd->flags |= HAS_SYMS; | |
1724 | ||
1725 | /* Sometimes a shared object will map in the symbol table. If | |
1726 | SHF_ALLOC is set, and this is a shared object, then we also | |
1727 | treat this section as a BFD section. We can not base the | |
1728 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1049f94e | 1729 | set in a relocatable object file, which would confuse the |
252b5132 RH |
1730 | linker. */ |
1731 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1732 | && (abfd->flags & DYNAMIC) != 0 | |
1733 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 1734 | return FALSE; |
252b5132 | 1735 | |
b34976b6 | 1736 | return TRUE; |
252b5132 RH |
1737 | |
1738 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1739 | if (elf_dynsymtab (abfd) == shindex) | |
b34976b6 | 1740 | return TRUE; |
252b5132 RH |
1741 | |
1742 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1743 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1744 | elf_dynsymtab (abfd) = shindex; | |
1745 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
1746 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
1747 | abfd->flags |= HAS_SYMS; | |
1748 | ||
1749 | /* Besides being a symbol table, we also treat this as a regular | |
1750 | section, so that objcopy can handle it. */ | |
1751 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1752 | ||
9ad5cbcf AM |
1753 | case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */ |
1754 | if (elf_symtab_shndx (abfd) == shindex) | |
b34976b6 | 1755 | return TRUE; |
9ad5cbcf AM |
1756 | |
1757 | /* Get the associated symbol table. */ | |
1758 | if (! bfd_section_from_shdr (abfd, hdr->sh_link) | |
1759 | || hdr->sh_link != elf_onesymtab (abfd)) | |
b34976b6 | 1760 | return FALSE; |
9ad5cbcf AM |
1761 | |
1762 | elf_symtab_shndx (abfd) = shindex; | |
1763 | elf_tdata (abfd)->symtab_shndx_hdr = *hdr; | |
1764 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; | |
b34976b6 | 1765 | return TRUE; |
9ad5cbcf | 1766 | |
252b5132 RH |
1767 | case SHT_STRTAB: /* A string table */ |
1768 | if (hdr->bfd_section != NULL) | |
b34976b6 | 1769 | return TRUE; |
252b5132 RH |
1770 | if (ehdr->e_shstrndx == shindex) |
1771 | { | |
1772 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1773 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
b34976b6 | 1774 | return TRUE; |
252b5132 RH |
1775 | } |
1776 | { | |
9ad5cbcf | 1777 | unsigned int i, num_sec; |
252b5132 | 1778 | |
9ad5cbcf AM |
1779 | num_sec = elf_numsections (abfd); |
1780 | for (i = 1; i < num_sec; i++) | |
252b5132 RH |
1781 | { |
1782 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1783 | if (hdr2->sh_link == shindex) | |
1784 | { | |
1785 | if (! bfd_section_from_shdr (abfd, i)) | |
b34976b6 | 1786 | return FALSE; |
252b5132 RH |
1787 | if (elf_onesymtab (abfd) == i) |
1788 | { | |
1789 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1790 | elf_elfsections (abfd)[shindex] = | |
1791 | &elf_tdata (abfd)->strtab_hdr; | |
b34976b6 | 1792 | return TRUE; |
252b5132 RH |
1793 | } |
1794 | if (elf_dynsymtab (abfd) == i) | |
1795 | { | |
1796 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
1797 | elf_elfsections (abfd)[shindex] = hdr = | |
1798 | &elf_tdata (abfd)->dynstrtab_hdr; | |
1799 | /* We also treat this as a regular section, so | |
1800 | that objcopy can handle it. */ | |
1801 | break; | |
1802 | } | |
1803 | #if 0 /* Not handling other string tables specially right now. */ | |
1804 | hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */ | |
1805 | /* We have a strtab for some random other section. */ | |
1806 | newsect = (asection *) hdr2->bfd_section; | |
1807 | if (!newsect) | |
1808 | break; | |
1809 | hdr->bfd_section = newsect; | |
1810 | hdr2 = &elf_section_data (newsect)->str_hdr; | |
1811 | *hdr2 = *hdr; | |
1812 | elf_elfsections (abfd)[shindex] = hdr2; | |
1813 | #endif | |
1814 | } | |
1815 | } | |
1816 | } | |
1817 | ||
1818 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1819 | ||
1820 | case SHT_REL: | |
1821 | case SHT_RELA: | |
1822 | /* *These* do a lot of work -- but build no sections! */ | |
1823 | { | |
1824 | asection *target_sect; | |
1825 | Elf_Internal_Shdr *hdr2; | |
9ad5cbcf | 1826 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 1827 | |
03ae5f59 | 1828 | /* Check for a bogus link to avoid crashing. */ |
9ad5cbcf AM |
1829 | if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE) |
1830 | || hdr->sh_link >= num_sec) | |
03ae5f59 ILT |
1831 | { |
1832 | ((*_bfd_error_handler) | |
1833 | (_("%s: invalid link %lu for reloc section %s (index %u)"), | |
8f615d07 | 1834 | bfd_archive_filename (abfd), hdr->sh_link, name, shindex)); |
03ae5f59 ILT |
1835 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
1836 | } | |
1837 | ||
252b5132 RH |
1838 | /* For some incomprehensible reason Oracle distributes |
1839 | libraries for Solaris in which some of the objects have | |
1840 | bogus sh_link fields. It would be nice if we could just | |
1841 | reject them, but, unfortunately, some people need to use | |
1842 | them. We scan through the section headers; if we find only | |
1843 | one suitable symbol table, we clobber the sh_link to point | |
1844 | to it. I hope this doesn't break anything. */ | |
1845 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1846 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1847 | { | |
9ad5cbcf | 1848 | unsigned int scan; |
252b5132 RH |
1849 | int found; |
1850 | ||
1851 | found = 0; | |
9ad5cbcf | 1852 | for (scan = 1; scan < num_sec; scan++) |
252b5132 RH |
1853 | { |
1854 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1855 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1856 | { | |
1857 | if (found != 0) | |
1858 | { | |
1859 | found = 0; | |
1860 | break; | |
1861 | } | |
1862 | found = scan; | |
1863 | } | |
1864 | } | |
1865 | if (found != 0) | |
1866 | hdr->sh_link = found; | |
1867 | } | |
1868 | ||
1869 | /* Get the symbol table. */ | |
1870 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB | |
1871 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) | |
b34976b6 | 1872 | return FALSE; |
252b5132 RH |
1873 | |
1874 | /* If this reloc section does not use the main symbol table we | |
1875 | don't treat it as a reloc section. BFD can't adequately | |
1876 | represent such a section, so at least for now, we don't | |
c044fabd | 1877 | try. We just present it as a normal section. We also |
60bcf0fa | 1878 | can't use it as a reloc section if it points to the null |
c044fabd | 1879 | section. */ |
60bcf0fa | 1880 | if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF) |
252b5132 RH |
1881 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
1882 | ||
1883 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) | |
b34976b6 | 1884 | return FALSE; |
252b5132 RH |
1885 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); |
1886 | if (target_sect == NULL) | |
b34976b6 | 1887 | return FALSE; |
252b5132 RH |
1888 | |
1889 | if ((target_sect->flags & SEC_RELOC) == 0 | |
1890 | || target_sect->reloc_count == 0) | |
1891 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1892 | else | |
1893 | { | |
dc810e39 | 1894 | bfd_size_type amt; |
252b5132 | 1895 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); |
dc810e39 | 1896 | amt = sizeof (*hdr2); |
217aa764 | 1897 | hdr2 = bfd_alloc (abfd, amt); |
252b5132 RH |
1898 | elf_section_data (target_sect)->rel_hdr2 = hdr2; |
1899 | } | |
1900 | *hdr2 = *hdr; | |
1901 | elf_elfsections (abfd)[shindex] = hdr2; | |
d9bc7a44 | 1902 | target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr); |
252b5132 RH |
1903 | target_sect->flags |= SEC_RELOC; |
1904 | target_sect->relocation = NULL; | |
1905 | target_sect->rel_filepos = hdr->sh_offset; | |
bf572ba0 MM |
1906 | /* In the section to which the relocations apply, mark whether |
1907 | its relocations are of the REL or RELA variety. */ | |
72730e0c | 1908 | if (hdr->sh_size != 0) |
68bfbfcc | 1909 | target_sect->use_rela_p = hdr->sh_type == SHT_RELA; |
252b5132 | 1910 | abfd->flags |= HAS_RELOC; |
b34976b6 | 1911 | return TRUE; |
252b5132 RH |
1912 | } |
1913 | break; | |
1914 | ||
1915 | case SHT_GNU_verdef: | |
1916 | elf_dynverdef (abfd) = shindex; | |
1917 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
1918 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1919 | break; | |
1920 | ||
1921 | case SHT_GNU_versym: | |
1922 | elf_dynversym (abfd) = shindex; | |
1923 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
1924 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1925 | break; | |
1926 | ||
1927 | case SHT_GNU_verneed: | |
1928 | elf_dynverref (abfd) = shindex; | |
1929 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
1930 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1931 | break; | |
1932 | ||
1933 | case SHT_SHLIB: | |
b34976b6 | 1934 | return TRUE; |
252b5132 | 1935 | |
dbb410c3 | 1936 | case SHT_GROUP: |
b885599b AM |
1937 | /* We need a BFD section for objcopy and relocatable linking, |
1938 | and it's handy to have the signature available as the section | |
1939 | name. */ | |
1940 | name = group_signature (abfd, hdr); | |
1941 | if (name == NULL) | |
b34976b6 | 1942 | return FALSE; |
dbb410c3 | 1943 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name)) |
b34976b6 | 1944 | return FALSE; |
dbb410c3 AM |
1945 | if (hdr->contents != NULL) |
1946 | { | |
1947 | Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; | |
1948 | unsigned int n_elt = hdr->sh_size / 4; | |
1949 | asection *s; | |
1950 | ||
b885599b AM |
1951 | if (idx->flags & GRP_COMDAT) |
1952 | hdr->bfd_section->flags | |
1953 | |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
1954 | ||
45c5e9ed L |
1955 | /* We try to keep the same section order as it comes in. */ |
1956 | idx += n_elt; | |
dbb410c3 | 1957 | while (--n_elt != 0) |
45c5e9ed | 1958 | if ((s = (--idx)->shdr->bfd_section) != NULL |
945906ff | 1959 | && elf_next_in_group (s) != NULL) |
dbb410c3 | 1960 | { |
945906ff | 1961 | elf_next_in_group (hdr->bfd_section) = s; |
dbb410c3 AM |
1962 | break; |
1963 | } | |
1964 | } | |
1965 | break; | |
1966 | ||
252b5132 RH |
1967 | default: |
1968 | /* Check for any processor-specific section types. */ | |
1969 | { | |
1970 | if (bed->elf_backend_section_from_shdr) | |
1971 | (*bed->elf_backend_section_from_shdr) (abfd, hdr, name); | |
1972 | } | |
1973 | break; | |
1974 | } | |
1975 | ||
b34976b6 | 1976 | return TRUE; |
252b5132 RH |
1977 | } |
1978 | ||
ec338859 AM |
1979 | /* Return the section for the local symbol specified by ABFD, R_SYMNDX. |
1980 | Return SEC for sections that have no elf section, and NULL on error. */ | |
1981 | ||
1982 | asection * | |
217aa764 AM |
1983 | bfd_section_from_r_symndx (bfd *abfd, |
1984 | struct sym_sec_cache *cache, | |
1985 | asection *sec, | |
1986 | unsigned long r_symndx) | |
ec338859 | 1987 | { |
ec338859 | 1988 | Elf_Internal_Shdr *symtab_hdr; |
6cdc0ccc AM |
1989 | unsigned char esym[sizeof (Elf64_External_Sym)]; |
1990 | Elf_External_Sym_Shndx eshndx; | |
1991 | Elf_Internal_Sym isym; | |
ec338859 AM |
1992 | unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE; |
1993 | ||
1994 | if (cache->abfd == abfd && cache->indx[ent] == r_symndx) | |
1995 | return cache->sec[ent]; | |
1996 | ||
1997 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6cdc0ccc AM |
1998 | if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx, |
1999 | &isym, esym, &eshndx) == NULL) | |
ec338859 | 2000 | return NULL; |
9ad5cbcf | 2001 | |
ec338859 AM |
2002 | if (cache->abfd != abfd) |
2003 | { | |
2004 | memset (cache->indx, -1, sizeof (cache->indx)); | |
2005 | cache->abfd = abfd; | |
2006 | } | |
2007 | cache->indx[ent] = r_symndx; | |
2008 | cache->sec[ent] = sec; | |
50bc7936 AM |
2009 | if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE) |
2010 | || isym.st_shndx > SHN_HIRESERVE) | |
ec338859 AM |
2011 | { |
2012 | asection *s; | |
6cdc0ccc | 2013 | s = bfd_section_from_elf_index (abfd, isym.st_shndx); |
ec338859 AM |
2014 | if (s != NULL) |
2015 | cache->sec[ent] = s; | |
2016 | } | |
2017 | return cache->sec[ent]; | |
2018 | } | |
2019 | ||
252b5132 RH |
2020 | /* Given an ELF section number, retrieve the corresponding BFD |
2021 | section. */ | |
2022 | ||
2023 | asection * | |
217aa764 | 2024 | bfd_section_from_elf_index (bfd *abfd, unsigned int index) |
252b5132 | 2025 | { |
9ad5cbcf | 2026 | if (index >= elf_numsections (abfd)) |
252b5132 RH |
2027 | return NULL; |
2028 | return elf_elfsections (abfd)[index]->bfd_section; | |
2029 | } | |
2030 | ||
2f89ff8d L |
2031 | static struct bfd_elf_special_section const special_sections[] = |
2032 | { | |
7dcb9820 AM |
2033 | { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
2034 | { ".comment", 8, 0, SHT_PROGBITS, 0 }, | |
2035 | { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2036 | { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2037 | { ".debug", 6, 0, SHT_PROGBITS, 0 }, | |
2038 | { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2039 | { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2040 | { ".line", 5, 0, SHT_PROGBITS, 0 }, | |
2041 | { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC }, | |
2042 | { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC }, | |
2043 | { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2044 | { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, | |
2045 | { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2046 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2047 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2048 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, | |
2049 | { ".debug_line", 11, 0, SHT_PROGBITS, 0 }, | |
2050 | { ".debug_info", 11, 0, SHT_PROGBITS, 0 }, | |
2051 | { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 }, | |
2052 | { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 }, | |
2053 | { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC }, | |
2054 | { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC }, | |
2055 | { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC }, | |
2056 | { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2057 | { ".hash", 5, 0, SHT_HASH, SHF_ALLOC }, | |
2058 | { ".interp", 7, 0, SHT_PROGBITS, 0 }, | |
2059 | { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
2060 | { ".shstrtab", 9, 0, SHT_STRTAB, 0 }, | |
2061 | { ".strtab", 7, 0, SHT_STRTAB, 0 }, | |
2062 | { ".symtab", 7, 0, SHT_SYMTAB, 0 }, | |
2063 | { ".gnu.version", 12, 0, SHT_GNU_versym, 0 }, | |
2064 | { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 }, | |
2065 | { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 }, | |
45c5e9ed | 2066 | { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 }, |
7dcb9820 AM |
2067 | { ".note", 5, -1, SHT_NOTE, 0 }, |
2068 | { ".rela", 5, -1, SHT_RELA, 0 }, | |
2069 | { ".rel", 4, -1, SHT_REL, 0 }, | |
2070 | { ".stabstr", 5, 3, SHT_STRTAB, 0 }, | |
2071 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
2072 | }; |
2073 | ||
2074 | static const struct bfd_elf_special_section * | |
2075 | get_special_section (const char *name, | |
2076 | const struct bfd_elf_special_section *special_sections, | |
2077 | unsigned int rela) | |
2078 | { | |
2079 | int i; | |
7dcb9820 | 2080 | int len = strlen (name); |
2f89ff8d L |
2081 | |
2082 | for (i = 0; special_sections[i].prefix != NULL; i++) | |
7dcb9820 AM |
2083 | { |
2084 | int suffix_len; | |
2085 | int prefix_len = special_sections[i].prefix_length; | |
2086 | ||
2087 | if (len < prefix_len) | |
2088 | continue; | |
2089 | if (memcmp (name, special_sections[i].prefix, prefix_len) != 0) | |
2090 | continue; | |
2091 | ||
2092 | suffix_len = special_sections[i].suffix_length; | |
2093 | if (suffix_len <= 0) | |
2094 | { | |
2095 | if (name[prefix_len] != 0) | |
2096 | { | |
2097 | if (suffix_len == 0) | |
2098 | continue; | |
2099 | if (name[prefix_len] != '.' | |
2100 | && (suffix_len == -2 | |
2101 | || (rela && special_sections[i].type == SHT_REL))) | |
2102 | continue; | |
2103 | } | |
2104 | } | |
2105 | else | |
2106 | { | |
2107 | if (len < prefix_len + suffix_len) | |
2108 | continue; | |
2109 | if (memcmp (name + len - suffix_len, | |
2110 | special_sections[i].prefix + prefix_len, | |
2111 | suffix_len) != 0) | |
2112 | continue; | |
2113 | } | |
2f89ff8d | 2114 | return &special_sections[i]; |
7dcb9820 | 2115 | } |
2f89ff8d L |
2116 | |
2117 | return NULL; | |
2118 | } | |
2119 | ||
7dcb9820 AM |
2120 | const struct bfd_elf_special_section * |
2121 | _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) | |
2f89ff8d | 2122 | { |
9c5bfbb7 | 2123 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
7dcb9820 | 2124 | const struct bfd_elf_special_section *ssect = NULL; |
2f89ff8d L |
2125 | |
2126 | /* See if this is one of the special sections. */ | |
2127 | if (name) | |
2128 | { | |
9c5bfbb7 | 2129 | unsigned int rela = bed->default_use_rela_p; |
2f89ff8d L |
2130 | |
2131 | if (bed->special_sections) | |
2132 | ssect = get_special_section (name, bed->special_sections, rela); | |
2133 | ||
2134 | if (! ssect) | |
2135 | ssect = get_special_section (name, special_sections, rela); | |
2f89ff8d L |
2136 | } |
2137 | ||
7dcb9820 | 2138 | return ssect; |
2f89ff8d L |
2139 | } |
2140 | ||
b34976b6 | 2141 | bfd_boolean |
217aa764 | 2142 | _bfd_elf_new_section_hook (bfd *abfd, asection *sec) |
252b5132 RH |
2143 | { |
2144 | struct bfd_elf_section_data *sdata; | |
7dcb9820 | 2145 | const struct bfd_elf_special_section *ssect; |
252b5132 | 2146 | |
f0abc2a1 AM |
2147 | sdata = (struct bfd_elf_section_data *) sec->used_by_bfd; |
2148 | if (sdata == NULL) | |
2149 | { | |
217aa764 | 2150 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); |
f0abc2a1 AM |
2151 | if (sdata == NULL) |
2152 | return FALSE; | |
217aa764 | 2153 | sec->used_by_bfd = sdata; |
f0abc2a1 | 2154 | } |
bf572ba0 | 2155 | |
3cddba1e | 2156 | elf_section_type (sec) = SHT_NULL; |
7dcb9820 AM |
2157 | ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); |
2158 | if (ssect != NULL) | |
2f89ff8d | 2159 | { |
7dcb9820 AM |
2160 | elf_section_type (sec) = ssect->type; |
2161 | elf_section_flags (sec) = ssect->attr; | |
2f89ff8d L |
2162 | } |
2163 | ||
bf572ba0 | 2164 | /* Indicate whether or not this section should use RELA relocations. */ |
68bfbfcc | 2165 | sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; |
bf572ba0 | 2166 | |
b34976b6 | 2167 | return TRUE; |
252b5132 RH |
2168 | } |
2169 | ||
2170 | /* Create a new bfd section from an ELF program header. | |
2171 | ||
2172 | Since program segments have no names, we generate a synthetic name | |
2173 | of the form segment<NUM>, where NUM is generally the index in the | |
2174 | program header table. For segments that are split (see below) we | |
2175 | generate the names segment<NUM>a and segment<NUM>b. | |
2176 | ||
2177 | Note that some program segments may have a file size that is different than | |
2178 | (less than) the memory size. All this means is that at execution the | |
2179 | system must allocate the amount of memory specified by the memory size, | |
2180 | but only initialize it with the first "file size" bytes read from the | |
2181 | file. This would occur for example, with program segments consisting | |
2182 | of combined data+bss. | |
2183 | ||
2184 | To handle the above situation, this routine generates TWO bfd sections | |
2185 | for the single program segment. The first has the length specified by | |
2186 | the file size of the segment, and the second has the length specified | |
2187 | by the difference between the two sizes. In effect, the segment is split | |
2188 | into it's initialized and uninitialized parts. | |
2189 | ||
2190 | */ | |
2191 | ||
b34976b6 | 2192 | bfd_boolean |
217aa764 AM |
2193 | _bfd_elf_make_section_from_phdr (bfd *abfd, |
2194 | Elf_Internal_Phdr *hdr, | |
2195 | int index, | |
2196 | const char *typename) | |
252b5132 RH |
2197 | { |
2198 | asection *newsect; | |
2199 | char *name; | |
2200 | char namebuf[64]; | |
d4c88bbb | 2201 | size_t len; |
252b5132 RH |
2202 | int split; |
2203 | ||
2204 | split = ((hdr->p_memsz > 0) | |
2205 | && (hdr->p_filesz > 0) | |
2206 | && (hdr->p_memsz > hdr->p_filesz)); | |
27ac83bf | 2207 | sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : ""); |
d4c88bbb | 2208 | len = strlen (namebuf) + 1; |
217aa764 | 2209 | name = bfd_alloc (abfd, len); |
252b5132 | 2210 | if (!name) |
b34976b6 | 2211 | return FALSE; |
d4c88bbb | 2212 | memcpy (name, namebuf, len); |
252b5132 RH |
2213 | newsect = bfd_make_section (abfd, name); |
2214 | if (newsect == NULL) | |
b34976b6 | 2215 | return FALSE; |
252b5132 RH |
2216 | newsect->vma = hdr->p_vaddr; |
2217 | newsect->lma = hdr->p_paddr; | |
2218 | newsect->_raw_size = hdr->p_filesz; | |
2219 | newsect->filepos = hdr->p_offset; | |
2220 | newsect->flags |= SEC_HAS_CONTENTS; | |
57e24cbf | 2221 | newsect->alignment_power = bfd_log2 (hdr->p_align); |
252b5132 RH |
2222 | if (hdr->p_type == PT_LOAD) |
2223 | { | |
2224 | newsect->flags |= SEC_ALLOC; | |
2225 | newsect->flags |= SEC_LOAD; | |
2226 | if (hdr->p_flags & PF_X) | |
2227 | { | |
2228 | /* FIXME: all we known is that it has execute PERMISSION, | |
c044fabd | 2229 | may be data. */ |
252b5132 RH |
2230 | newsect->flags |= SEC_CODE; |
2231 | } | |
2232 | } | |
2233 | if (!(hdr->p_flags & PF_W)) | |
2234 | { | |
2235 | newsect->flags |= SEC_READONLY; | |
2236 | } | |
2237 | ||
2238 | if (split) | |
2239 | { | |
27ac83bf | 2240 | sprintf (namebuf, "%s%db", typename, index); |
d4c88bbb | 2241 | len = strlen (namebuf) + 1; |
217aa764 | 2242 | name = bfd_alloc (abfd, len); |
252b5132 | 2243 | if (!name) |
b34976b6 | 2244 | return FALSE; |
d4c88bbb | 2245 | memcpy (name, namebuf, len); |
252b5132 RH |
2246 | newsect = bfd_make_section (abfd, name); |
2247 | if (newsect == NULL) | |
b34976b6 | 2248 | return FALSE; |
252b5132 RH |
2249 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; |
2250 | newsect->lma = hdr->p_paddr + hdr->p_filesz; | |
2251 | newsect->_raw_size = hdr->p_memsz - hdr->p_filesz; | |
2252 | if (hdr->p_type == PT_LOAD) | |
2253 | { | |
2254 | newsect->flags |= SEC_ALLOC; | |
2255 | if (hdr->p_flags & PF_X) | |
2256 | newsect->flags |= SEC_CODE; | |
2257 | } | |
2258 | if (!(hdr->p_flags & PF_W)) | |
2259 | newsect->flags |= SEC_READONLY; | |
2260 | } | |
2261 | ||
b34976b6 | 2262 | return TRUE; |
252b5132 RH |
2263 | } |
2264 | ||
b34976b6 | 2265 | bfd_boolean |
217aa764 | 2266 | bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) |
20cfcaae | 2267 | { |
9c5bfbb7 | 2268 | const struct elf_backend_data *bed; |
20cfcaae NC |
2269 | |
2270 | switch (hdr->p_type) | |
2271 | { | |
2272 | case PT_NULL: | |
2273 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null"); | |
2274 | ||
2275 | case PT_LOAD: | |
2276 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load"); | |
2277 | ||
2278 | case PT_DYNAMIC: | |
2279 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic"); | |
2280 | ||
2281 | case PT_INTERP: | |
2282 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp"); | |
2283 | ||
2284 | case PT_NOTE: | |
2285 | if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note")) | |
b34976b6 | 2286 | return FALSE; |
217aa764 | 2287 | if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz)) |
b34976b6 AM |
2288 | return FALSE; |
2289 | return TRUE; | |
20cfcaae NC |
2290 | |
2291 | case PT_SHLIB: | |
2292 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib"); | |
2293 | ||
2294 | case PT_PHDR: | |
2295 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr"); | |
2296 | ||
811072d8 RM |
2297 | case PT_GNU_EH_FRAME: |
2298 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, | |
2299 | "eh_frame_hdr"); | |
2300 | ||
9ee5e499 JJ |
2301 | case PT_GNU_STACK: |
2302 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack"); | |
2303 | ||
8c37241b JJ |
2304 | case PT_GNU_RELRO: |
2305 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
2306 | ||
20cfcaae NC |
2307 | default: |
2308 | /* Check for any processor-specific program segment types. | |
c044fabd | 2309 | If no handler for them, default to making "segment" sections. */ |
20cfcaae NC |
2310 | bed = get_elf_backend_data (abfd); |
2311 | if (bed->elf_backend_section_from_phdr) | |
2312 | return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index); | |
2313 | else | |
2314 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment"); | |
2315 | } | |
2316 | } | |
2317 | ||
23bc299b | 2318 | /* Initialize REL_HDR, the section-header for new section, containing |
b34976b6 | 2319 | relocations against ASECT. If USE_RELA_P is TRUE, we use RELA |
23bc299b MM |
2320 | relocations; otherwise, we use REL relocations. */ |
2321 | ||
b34976b6 | 2322 | bfd_boolean |
217aa764 AM |
2323 | _bfd_elf_init_reloc_shdr (bfd *abfd, |
2324 | Elf_Internal_Shdr *rel_hdr, | |
2325 | asection *asect, | |
2326 | bfd_boolean use_rela_p) | |
23bc299b MM |
2327 | { |
2328 | char *name; | |
9c5bfbb7 | 2329 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
dc810e39 | 2330 | bfd_size_type amt = sizeof ".rela" + strlen (asect->name); |
23bc299b | 2331 | |
dc810e39 | 2332 | name = bfd_alloc (abfd, amt); |
23bc299b | 2333 | if (name == NULL) |
b34976b6 | 2334 | return FALSE; |
23bc299b MM |
2335 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); |
2336 | rel_hdr->sh_name = | |
2b0f7ef9 | 2337 | (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name, |
b34976b6 | 2338 | FALSE); |
23bc299b | 2339 | if (rel_hdr->sh_name == (unsigned int) -1) |
b34976b6 | 2340 | return FALSE; |
23bc299b MM |
2341 | rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; |
2342 | rel_hdr->sh_entsize = (use_rela_p | |
2343 | ? bed->s->sizeof_rela | |
2344 | : bed->s->sizeof_rel); | |
45d6a902 | 2345 | rel_hdr->sh_addralign = 1 << bed->s->log_file_align; |
23bc299b MM |
2346 | rel_hdr->sh_flags = 0; |
2347 | rel_hdr->sh_addr = 0; | |
2348 | rel_hdr->sh_size = 0; | |
2349 | rel_hdr->sh_offset = 0; | |
2350 | ||
b34976b6 | 2351 | return TRUE; |
23bc299b MM |
2352 | } |
2353 | ||
252b5132 RH |
2354 | /* Set up an ELF internal section header for a section. */ |
2355 | ||
252b5132 | 2356 | static void |
217aa764 | 2357 | elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) |
252b5132 | 2358 | { |
9c5bfbb7 | 2359 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 2360 | bfd_boolean *failedptr = failedptrarg; |
252b5132 RH |
2361 | Elf_Internal_Shdr *this_hdr; |
2362 | ||
2363 | if (*failedptr) | |
2364 | { | |
2365 | /* We already failed; just get out of the bfd_map_over_sections | |
2366 | loop. */ | |
2367 | return; | |
2368 | } | |
2369 | ||
2370 | this_hdr = &elf_section_data (asect)->this_hdr; | |
2371 | ||
e57b5356 AM |
2372 | this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), |
2373 | asect->name, FALSE); | |
2374 | if (this_hdr->sh_name == (unsigned int) -1) | |
252b5132 | 2375 | { |
b34976b6 | 2376 | *failedptr = TRUE; |
252b5132 RH |
2377 | return; |
2378 | } | |
2379 | ||
2380 | this_hdr->sh_flags = 0; | |
2381 | ||
2382 | if ((asect->flags & SEC_ALLOC) != 0 | |
2383 | || asect->user_set_vma) | |
2384 | this_hdr->sh_addr = asect->vma; | |
2385 | else | |
2386 | this_hdr->sh_addr = 0; | |
2387 | ||
2388 | this_hdr->sh_offset = 0; | |
2389 | this_hdr->sh_size = asect->_raw_size; | |
2390 | this_hdr->sh_link = 0; | |
2391 | this_hdr->sh_addralign = 1 << asect->alignment_power; | |
2392 | /* The sh_entsize and sh_info fields may have been set already by | |
2393 | copy_private_section_data. */ | |
2394 | ||
2395 | this_hdr->bfd_section = asect; | |
2396 | this_hdr->contents = NULL; | |
2397 | ||
3cddba1e L |
2398 | /* If the section type is unspecified, we set it based on |
2399 | asect->flags. */ | |
2400 | if (this_hdr->sh_type == SHT_NULL) | |
2401 | { | |
45c5e9ed L |
2402 | if ((asect->flags & SEC_GROUP) != 0) |
2403 | { | |
2404 | /* We also need to mark SHF_GROUP here for relocatable | |
2405 | link. */ | |
2406 | struct bfd_link_order *l; | |
2407 | asection *elt; | |
2408 | ||
2409 | for (l = asect->link_order_head; l != NULL; l = l->next) | |
2410 | if (l->type == bfd_indirect_link_order | |
2411 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) | |
2412 | do | |
2413 | { | |
2414 | /* The name is not important. Anything will do. */ | |
2415 | elf_group_name (elt->output_section) = "G"; | |
2416 | elf_section_flags (elt->output_section) |= SHF_GROUP; | |
2417 | ||
2418 | elt = elf_next_in_group (elt); | |
2419 | /* During a relocatable link, the lists are | |
2420 | circular. */ | |
2421 | } | |
2422 | while (elt != elf_next_in_group (l->u.indirect.section)); | |
2423 | ||
2424 | this_hdr->sh_type = SHT_GROUP; | |
2425 | } | |
2426 | else if ((asect->flags & SEC_ALLOC) != 0 | |
3cddba1e L |
2427 | && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) |
2428 | || (asect->flags & SEC_NEVER_LOAD) != 0)) | |
2429 | this_hdr->sh_type = SHT_NOBITS; | |
2430 | else | |
2431 | this_hdr->sh_type = SHT_PROGBITS; | |
2432 | } | |
2433 | ||
2f89ff8d | 2434 | switch (this_hdr->sh_type) |
252b5132 | 2435 | { |
2f89ff8d | 2436 | default: |
2f89ff8d L |
2437 | break; |
2438 | ||
2439 | case SHT_STRTAB: | |
2440 | case SHT_INIT_ARRAY: | |
2441 | case SHT_FINI_ARRAY: | |
2442 | case SHT_PREINIT_ARRAY: | |
2443 | case SHT_NOTE: | |
2444 | case SHT_NOBITS: | |
2445 | case SHT_PROGBITS: | |
2446 | break; | |
2447 | ||
2448 | case SHT_HASH: | |
c7ac6ff8 | 2449 | this_hdr->sh_entsize = bed->s->sizeof_hash_entry; |
2f89ff8d | 2450 | break; |
5de3bf90 | 2451 | |
2f89ff8d | 2452 | case SHT_DYNSYM: |
252b5132 | 2453 | this_hdr->sh_entsize = bed->s->sizeof_sym; |
2f89ff8d L |
2454 | break; |
2455 | ||
2456 | case SHT_DYNAMIC: | |
252b5132 | 2457 | this_hdr->sh_entsize = bed->s->sizeof_dyn; |
2f89ff8d L |
2458 | break; |
2459 | ||
2460 | case SHT_RELA: | |
2461 | if (get_elf_backend_data (abfd)->may_use_rela_p) | |
2462 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
2463 | break; | |
2464 | ||
2465 | case SHT_REL: | |
2466 | if (get_elf_backend_data (abfd)->may_use_rel_p) | |
2467 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
2468 | break; | |
2469 | ||
2470 | case SHT_GNU_versym: | |
252b5132 | 2471 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); |
2f89ff8d L |
2472 | break; |
2473 | ||
2474 | case SHT_GNU_verdef: | |
252b5132 RH |
2475 | this_hdr->sh_entsize = 0; |
2476 | /* objcopy or strip will copy over sh_info, but may not set | |
2477 | cverdefs. The linker will set cverdefs, but sh_info will be | |
2478 | zero. */ | |
2479 | if (this_hdr->sh_info == 0) | |
2480 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
2481 | else | |
2482 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
2483 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
2f89ff8d L |
2484 | break; |
2485 | ||
2486 | case SHT_GNU_verneed: | |
252b5132 RH |
2487 | this_hdr->sh_entsize = 0; |
2488 | /* objcopy or strip will copy over sh_info, but may not set | |
2489 | cverrefs. The linker will set cverrefs, but sh_info will be | |
2490 | zero. */ | |
2491 | if (this_hdr->sh_info == 0) | |
2492 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
2493 | else | |
2494 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
2495 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
2f89ff8d L |
2496 | break; |
2497 | ||
2498 | case SHT_GROUP: | |
dbb410c3 | 2499 | this_hdr->sh_entsize = 4; |
2f89ff8d | 2500 | break; |
dbb410c3 | 2501 | } |
252b5132 RH |
2502 | |
2503 | if ((asect->flags & SEC_ALLOC) != 0) | |
2504 | this_hdr->sh_flags |= SHF_ALLOC; | |
2505 | if ((asect->flags & SEC_READONLY) == 0) | |
2506 | this_hdr->sh_flags |= SHF_WRITE; | |
2507 | if ((asect->flags & SEC_CODE) != 0) | |
2508 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
f5fa8ca2 JJ |
2509 | if ((asect->flags & SEC_MERGE) != 0) |
2510 | { | |
2511 | this_hdr->sh_flags |= SHF_MERGE; | |
2512 | this_hdr->sh_entsize = asect->entsize; | |
2513 | if ((asect->flags & SEC_STRINGS) != 0) | |
2514 | this_hdr->sh_flags |= SHF_STRINGS; | |
2515 | } | |
1126897b | 2516 | if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL) |
dbb410c3 | 2517 | this_hdr->sh_flags |= SHF_GROUP; |
13ae64f3 | 2518 | if ((asect->flags & SEC_THREAD_LOCAL) != 0) |
704afa60 JJ |
2519 | { |
2520 | this_hdr->sh_flags |= SHF_TLS; | |
2521 | if (asect->_raw_size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0) | |
2522 | { | |
2523 | struct bfd_link_order *o; | |
b34976b6 | 2524 | |
704afa60 JJ |
2525 | this_hdr->sh_size = 0; |
2526 | for (o = asect->link_order_head; o != NULL; o = o->next) | |
2527 | if (this_hdr->sh_size < o->offset + o->size) | |
2528 | this_hdr->sh_size = o->offset + o->size; | |
2529 | if (this_hdr->sh_size) | |
2530 | this_hdr->sh_type = SHT_NOBITS; | |
2531 | } | |
2532 | } | |
252b5132 RH |
2533 | |
2534 | /* Check for processor-specific section types. */ | |
e1fddb6b AO |
2535 | if (bed->elf_backend_fake_sections |
2536 | && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect)) | |
b34976b6 | 2537 | *failedptr = TRUE; |
252b5132 RH |
2538 | |
2539 | /* If the section has relocs, set up a section header for the | |
23bc299b MM |
2540 | SHT_REL[A] section. If two relocation sections are required for |
2541 | this section, it is up to the processor-specific back-end to | |
c044fabd | 2542 | create the other. */ |
23bc299b | 2543 | if ((asect->flags & SEC_RELOC) != 0 |
c044fabd | 2544 | && !_bfd_elf_init_reloc_shdr (abfd, |
23bc299b | 2545 | &elf_section_data (asect)->rel_hdr, |
c044fabd | 2546 | asect, |
68bfbfcc | 2547 | asect->use_rela_p)) |
b34976b6 | 2548 | *failedptr = TRUE; |
252b5132 RH |
2549 | } |
2550 | ||
dbb410c3 AM |
2551 | /* Fill in the contents of a SHT_GROUP section. */ |
2552 | ||
1126897b | 2553 | void |
217aa764 | 2554 | bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) |
dbb410c3 | 2555 | { |
217aa764 | 2556 | bfd_boolean *failedptr = failedptrarg; |
dbb410c3 | 2557 | unsigned long symindx; |
9dce4196 | 2558 | asection *elt, *first; |
dbb410c3 AM |
2559 | unsigned char *loc; |
2560 | struct bfd_link_order *l; | |
b34976b6 | 2561 | bfd_boolean gas; |
dbb410c3 AM |
2562 | |
2563 | if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP | |
2564 | || *failedptr) | |
2565 | return; | |
2566 | ||
1126897b AM |
2567 | symindx = 0; |
2568 | if (elf_group_id (sec) != NULL) | |
2569 | symindx = elf_group_id (sec)->udata.i; | |
2570 | ||
2571 | if (symindx == 0) | |
2572 | { | |
2573 | /* If called from the assembler, swap_out_syms will have set up | |
2574 | elf_section_syms; If called for "ld -r", use target_index. */ | |
2575 | if (elf_section_syms (abfd) != NULL) | |
2576 | symindx = elf_section_syms (abfd)[sec->index]->udata.i; | |
2577 | else | |
2578 | symindx = sec->target_index; | |
2579 | } | |
dbb410c3 AM |
2580 | elf_section_data (sec)->this_hdr.sh_info = symindx; |
2581 | ||
1126897b | 2582 | /* The contents won't be allocated for "ld -r" or objcopy. */ |
b34976b6 | 2583 | gas = TRUE; |
dbb410c3 AM |
2584 | if (sec->contents == NULL) |
2585 | { | |
b34976b6 | 2586 | gas = FALSE; |
dbb410c3 | 2587 | sec->contents = bfd_alloc (abfd, sec->_raw_size); |
9dce4196 AM |
2588 | |
2589 | /* Arrange for the section to be written out. */ | |
2590 | elf_section_data (sec)->this_hdr.contents = sec->contents; | |
dbb410c3 AM |
2591 | if (sec->contents == NULL) |
2592 | { | |
b34976b6 | 2593 | *failedptr = TRUE; |
dbb410c3 AM |
2594 | return; |
2595 | } | |
2596 | } | |
2597 | ||
2598 | loc = sec->contents + sec->_raw_size; | |
2599 | ||
9dce4196 AM |
2600 | /* Get the pointer to the first section in the group that gas |
2601 | squirreled away here. objcopy arranges for this to be set to the | |
2602 | start of the input section group. */ | |
2603 | first = elt = elf_next_in_group (sec); | |
dbb410c3 AM |
2604 | |
2605 | /* First element is a flag word. Rest of section is elf section | |
2606 | indices for all the sections of the group. Write them backwards | |
2607 | just to keep the group in the same order as given in .section | |
2608 | directives, not that it matters. */ | |
2609 | while (elt != NULL) | |
2610 | { | |
9dce4196 AM |
2611 | asection *s; |
2612 | unsigned int idx; | |
2613 | ||
dbb410c3 | 2614 | loc -= 4; |
9dce4196 AM |
2615 | s = elt; |
2616 | if (!gas) | |
2617 | s = s->output_section; | |
2618 | idx = 0; | |
2619 | if (s != NULL) | |
2620 | idx = elf_section_data (s)->this_idx; | |
2621 | H_PUT_32 (abfd, idx, loc); | |
945906ff | 2622 | elt = elf_next_in_group (elt); |
9dce4196 AM |
2623 | if (elt == first) |
2624 | break; | |
dbb410c3 AM |
2625 | } |
2626 | ||
2627 | /* If this is a relocatable link, then the above did nothing because | |
2628 | SEC is the output section. Look through the input sections | |
2629 | instead. */ | |
2630 | for (l = sec->link_order_head; l != NULL; l = l->next) | |
2631 | if (l->type == bfd_indirect_link_order | |
945906ff | 2632 | && (elt = elf_next_in_group (l->u.indirect.section)) != NULL) |
dbb410c3 AM |
2633 | do |
2634 | { | |
2635 | loc -= 4; | |
2636 | H_PUT_32 (abfd, | |
2637 | elf_section_data (elt->output_section)->this_idx, loc); | |
945906ff | 2638 | elt = elf_next_in_group (elt); |
dbb410c3 AM |
2639 | /* During a relocatable link, the lists are circular. */ |
2640 | } | |
945906ff | 2641 | while (elt != elf_next_in_group (l->u.indirect.section)); |
dbb410c3 | 2642 | |
9dce4196 AM |
2643 | /* With ld -r, merging SHT_GROUP sections results in wasted space |
2644 | due to allowing for the flag word on each input. We may well | |
2645 | duplicate entries too. */ | |
2646 | while ((loc -= 4) > sec->contents) | |
2647 | H_PUT_32 (abfd, 0, loc); | |
2648 | ||
2649 | if (loc != sec->contents) | |
2650 | abort (); | |
dbb410c3 | 2651 | |
9dce4196 | 2652 | H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); |
dbb410c3 AM |
2653 | } |
2654 | ||
252b5132 RH |
2655 | /* Assign all ELF section numbers. The dummy first section is handled here |
2656 | too. The link/info pointers for the standard section types are filled | |
2657 | in here too, while we're at it. */ | |
2658 | ||
b34976b6 | 2659 | static bfd_boolean |
217aa764 | 2660 | assign_section_numbers (bfd *abfd) |
252b5132 RH |
2661 | { |
2662 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
2663 | asection *sec; | |
2b0f7ef9 | 2664 | unsigned int section_number, secn; |
252b5132 | 2665 | Elf_Internal_Shdr **i_shdrp; |
dc810e39 | 2666 | bfd_size_type amt; |
252b5132 RH |
2667 | |
2668 | section_number = 1; | |
2669 | ||
2b0f7ef9 JJ |
2670 | _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); |
2671 | ||
252b5132 RH |
2672 | for (sec = abfd->sections; sec; sec = sec->next) |
2673 | { | |
2674 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2675 | ||
9ad5cbcf AM |
2676 | if (section_number == SHN_LORESERVE) |
2677 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2678 | d->this_idx = section_number++; |
2b0f7ef9 | 2679 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); |
252b5132 RH |
2680 | if ((sec->flags & SEC_RELOC) == 0) |
2681 | d->rel_idx = 0; | |
2682 | else | |
2b0f7ef9 | 2683 | { |
9ad5cbcf AM |
2684 | if (section_number == SHN_LORESERVE) |
2685 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2686 | d->rel_idx = section_number++; |
2687 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name); | |
2688 | } | |
23bc299b MM |
2689 | |
2690 | if (d->rel_hdr2) | |
2b0f7ef9 | 2691 | { |
9ad5cbcf AM |
2692 | if (section_number == SHN_LORESERVE) |
2693 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2b0f7ef9 JJ |
2694 | d->rel_idx2 = section_number++; |
2695 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name); | |
2696 | } | |
23bc299b MM |
2697 | else |
2698 | d->rel_idx2 = 0; | |
252b5132 RH |
2699 | } |
2700 | ||
9ad5cbcf AM |
2701 | if (section_number == SHN_LORESERVE) |
2702 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2703 | t->shstrtab_section = section_number++; |
2b0f7ef9 | 2704 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); |
252b5132 | 2705 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; |
252b5132 RH |
2706 | |
2707 | if (bfd_get_symcount (abfd) > 0) | |
2708 | { | |
9ad5cbcf AM |
2709 | if (section_number == SHN_LORESERVE) |
2710 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2711 | t->symtab_section = section_number++; |
2b0f7ef9 | 2712 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); |
9ad5cbcf AM |
2713 | if (section_number > SHN_LORESERVE - 2) |
2714 | { | |
2715 | if (section_number == SHN_LORESERVE) | |
2716 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
2717 | t->symtab_shndx_section = section_number++; | |
2718 | t->symtab_shndx_hdr.sh_name | |
2719 | = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), | |
b34976b6 | 2720 | ".symtab_shndx", FALSE); |
9ad5cbcf | 2721 | if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1) |
b34976b6 | 2722 | return FALSE; |
9ad5cbcf AM |
2723 | } |
2724 | if (section_number == SHN_LORESERVE) | |
2725 | section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 | 2726 | t->strtab_section = section_number++; |
2b0f7ef9 | 2727 | _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name); |
252b5132 RH |
2728 | } |
2729 | ||
2b0f7ef9 JJ |
2730 | _bfd_elf_strtab_finalize (elf_shstrtab (abfd)); |
2731 | t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); | |
9ad5cbcf AM |
2732 | |
2733 | elf_numsections (abfd) = section_number; | |
252b5132 | 2734 | elf_elfheader (abfd)->e_shnum = section_number; |
9ad5cbcf AM |
2735 | if (section_number > SHN_LORESERVE) |
2736 | elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
2737 | |
2738 | /* Set up the list of section header pointers, in agreement with the | |
2739 | indices. */ | |
dc810e39 | 2740 | amt = section_number * sizeof (Elf_Internal_Shdr *); |
217aa764 | 2741 | i_shdrp = bfd_zalloc (abfd, amt); |
252b5132 | 2742 | if (i_shdrp == NULL) |
b34976b6 | 2743 | return FALSE; |
252b5132 | 2744 | |
dc810e39 | 2745 | amt = sizeof (Elf_Internal_Shdr); |
217aa764 | 2746 | i_shdrp[0] = bfd_zalloc (abfd, amt); |
252b5132 RH |
2747 | if (i_shdrp[0] == NULL) |
2748 | { | |
2749 | bfd_release (abfd, i_shdrp); | |
b34976b6 | 2750 | return FALSE; |
252b5132 | 2751 | } |
252b5132 RH |
2752 | |
2753 | elf_elfsections (abfd) = i_shdrp; | |
2754 | ||
2755 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
2756 | if (bfd_get_symcount (abfd) > 0) | |
2757 | { | |
2758 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
9ad5cbcf AM |
2759 | if (elf_numsections (abfd) > SHN_LORESERVE) |
2760 | { | |
2761 | i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr; | |
2762 | t->symtab_shndx_hdr.sh_link = t->symtab_section; | |
2763 | } | |
252b5132 RH |
2764 | i_shdrp[t->strtab_section] = &t->strtab_hdr; |
2765 | t->symtab_hdr.sh_link = t->strtab_section; | |
2766 | } | |
2767 | for (sec = abfd->sections; sec; sec = sec->next) | |
2768 | { | |
2769 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
2770 | asection *s; | |
2771 | const char *name; | |
2772 | ||
2773 | i_shdrp[d->this_idx] = &d->this_hdr; | |
2774 | if (d->rel_idx != 0) | |
2775 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
23bc299b MM |
2776 | if (d->rel_idx2 != 0) |
2777 | i_shdrp[d->rel_idx2] = d->rel_hdr2; | |
252b5132 RH |
2778 | |
2779 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
2780 | ||
2781 | /* sh_link of a reloc section is the section index of the symbol | |
2782 | table. sh_info is the section index of the section to which | |
2783 | the relocation entries apply. */ | |
2784 | if (d->rel_idx != 0) | |
2785 | { | |
2786 | d->rel_hdr.sh_link = t->symtab_section; | |
2787 | d->rel_hdr.sh_info = d->this_idx; | |
2788 | } | |
23bc299b MM |
2789 | if (d->rel_idx2 != 0) |
2790 | { | |
2791 | d->rel_hdr2->sh_link = t->symtab_section; | |
2792 | d->rel_hdr2->sh_info = d->this_idx; | |
2793 | } | |
252b5132 RH |
2794 | |
2795 | switch (d->this_hdr.sh_type) | |
2796 | { | |
2797 | case SHT_REL: | |
2798 | case SHT_RELA: | |
2799 | /* A reloc section which we are treating as a normal BFD | |
2800 | section. sh_link is the section index of the symbol | |
2801 | table. sh_info is the section index of the section to | |
2802 | which the relocation entries apply. We assume that an | |
2803 | allocated reloc section uses the dynamic symbol table. | |
2804 | FIXME: How can we be sure? */ | |
2805 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2806 | if (s != NULL) | |
2807 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2808 | ||
2809 | /* We look up the section the relocs apply to by name. */ | |
2810 | name = sec->name; | |
2811 | if (d->this_hdr.sh_type == SHT_REL) | |
2812 | name += 4; | |
2813 | else | |
2814 | name += 5; | |
2815 | s = bfd_get_section_by_name (abfd, name); | |
2816 | if (s != NULL) | |
2817 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
2818 | break; | |
2819 | ||
2820 | case SHT_STRTAB: | |
2821 | /* We assume that a section named .stab*str is a stabs | |
2822 | string section. We look for a section with the same name | |
2823 | but without the trailing ``str'', and set its sh_link | |
2824 | field to point to this section. */ | |
2825 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
2826 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
2827 | { | |
2828 | size_t len; | |
2829 | char *alc; | |
2830 | ||
2831 | len = strlen (sec->name); | |
217aa764 | 2832 | alc = bfd_malloc (len - 2); |
252b5132 | 2833 | if (alc == NULL) |
b34976b6 | 2834 | return FALSE; |
d4c88bbb | 2835 | memcpy (alc, sec->name, len - 3); |
252b5132 RH |
2836 | alc[len - 3] = '\0'; |
2837 | s = bfd_get_section_by_name (abfd, alc); | |
2838 | free (alc); | |
2839 | if (s != NULL) | |
2840 | { | |
2841 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
2842 | ||
2843 | /* This is a .stab section. */ | |
0594c12d AM |
2844 | if (elf_section_data (s)->this_hdr.sh_entsize == 0) |
2845 | elf_section_data (s)->this_hdr.sh_entsize | |
2846 | = 4 + 2 * bfd_get_arch_size (abfd) / 8; | |
252b5132 RH |
2847 | } |
2848 | } | |
2849 | break; | |
2850 | ||
2851 | case SHT_DYNAMIC: | |
2852 | case SHT_DYNSYM: | |
2853 | case SHT_GNU_verneed: | |
2854 | case SHT_GNU_verdef: | |
2855 | /* sh_link is the section header index of the string table | |
2856 | used for the dynamic entries, or the symbol table, or the | |
2857 | version strings. */ | |
2858 | s = bfd_get_section_by_name (abfd, ".dynstr"); | |
2859 | if (s != NULL) | |
2860 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2861 | break; | |
2862 | ||
2863 | case SHT_HASH: | |
2864 | case SHT_GNU_versym: | |
2865 | /* sh_link is the section header index of the symbol table | |
2866 | this hash table or version table is for. */ | |
2867 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
2868 | if (s != NULL) | |
2869 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
2870 | break; | |
dbb410c3 AM |
2871 | |
2872 | case SHT_GROUP: | |
2873 | d->this_hdr.sh_link = t->symtab_section; | |
252b5132 RH |
2874 | } |
2875 | } | |
2876 | ||
2b0f7ef9 | 2877 | for (secn = 1; secn < section_number; ++secn) |
9ad5cbcf AM |
2878 | if (i_shdrp[secn] == NULL) |
2879 | i_shdrp[secn] = i_shdrp[0]; | |
2880 | else | |
2881 | i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd), | |
2882 | i_shdrp[secn]->sh_name); | |
b34976b6 | 2883 | return TRUE; |
252b5132 RH |
2884 | } |
2885 | ||
2886 | /* Map symbol from it's internal number to the external number, moving | |
2887 | all local symbols to be at the head of the list. */ | |
2888 | ||
268b6b39 | 2889 | static int |
217aa764 | 2890 | sym_is_global (bfd *abfd, asymbol *sym) |
252b5132 RH |
2891 | { |
2892 | /* If the backend has a special mapping, use it. */ | |
9c5bfbb7 | 2893 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 AM |
2894 | if (bed->elf_backend_sym_is_global) |
2895 | return (*bed->elf_backend_sym_is_global) (abfd, sym); | |
252b5132 RH |
2896 | |
2897 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
2898 | || bfd_is_und_section (bfd_get_section (sym)) | |
2899 | || bfd_is_com_section (bfd_get_section (sym))); | |
2900 | } | |
2901 | ||
b34976b6 | 2902 | static bfd_boolean |
217aa764 | 2903 | elf_map_symbols (bfd *abfd) |
252b5132 | 2904 | { |
dc810e39 | 2905 | unsigned int symcount = bfd_get_symcount (abfd); |
252b5132 RH |
2906 | asymbol **syms = bfd_get_outsymbols (abfd); |
2907 | asymbol **sect_syms; | |
dc810e39 AM |
2908 | unsigned int num_locals = 0; |
2909 | unsigned int num_globals = 0; | |
2910 | unsigned int num_locals2 = 0; | |
2911 | unsigned int num_globals2 = 0; | |
252b5132 | 2912 | int max_index = 0; |
dc810e39 | 2913 | unsigned int idx; |
252b5132 RH |
2914 | asection *asect; |
2915 | asymbol **new_syms; | |
dc810e39 | 2916 | bfd_size_type amt; |
252b5132 RH |
2917 | |
2918 | #ifdef DEBUG | |
2919 | fprintf (stderr, "elf_map_symbols\n"); | |
2920 | fflush (stderr); | |
2921 | #endif | |
2922 | ||
252b5132 RH |
2923 | for (asect = abfd->sections; asect; asect = asect->next) |
2924 | { | |
2925 | if (max_index < asect->index) | |
2926 | max_index = asect->index; | |
2927 | } | |
2928 | ||
2929 | max_index++; | |
dc810e39 | 2930 | amt = max_index * sizeof (asymbol *); |
217aa764 | 2931 | sect_syms = bfd_zalloc (abfd, amt); |
252b5132 | 2932 | if (sect_syms == NULL) |
b34976b6 | 2933 | return FALSE; |
252b5132 | 2934 | elf_section_syms (abfd) = sect_syms; |
4e89ac30 | 2935 | elf_num_section_syms (abfd) = max_index; |
252b5132 | 2936 | |
079e9a2f AM |
2937 | /* Init sect_syms entries for any section symbols we have already |
2938 | decided to output. */ | |
252b5132 RH |
2939 | for (idx = 0; idx < symcount; idx++) |
2940 | { | |
dc810e39 | 2941 | asymbol *sym = syms[idx]; |
c044fabd | 2942 | |
252b5132 RH |
2943 | if ((sym->flags & BSF_SECTION_SYM) != 0 |
2944 | && sym->value == 0) | |
2945 | { | |
2946 | asection *sec; | |
2947 | ||
2948 | sec = sym->section; | |
2949 | ||
2950 | if (sec->owner != NULL) | |
2951 | { | |
2952 | if (sec->owner != abfd) | |
2953 | { | |
2954 | if (sec->output_offset != 0) | |
2955 | continue; | |
c044fabd | 2956 | |
252b5132 RH |
2957 | sec = sec->output_section; |
2958 | ||
079e9a2f AM |
2959 | /* Empty sections in the input files may have had a |
2960 | section symbol created for them. (See the comment | |
2961 | near the end of _bfd_generic_link_output_symbols in | |
2962 | linker.c). If the linker script discards such | |
2963 | sections then we will reach this point. Since we know | |
2964 | that we cannot avoid this case, we detect it and skip | |
2965 | the abort and the assignment to the sect_syms array. | |
2966 | To reproduce this particular case try running the | |
2967 | linker testsuite test ld-scripts/weak.exp for an ELF | |
2968 | port that uses the generic linker. */ | |
252b5132 RH |
2969 | if (sec->owner == NULL) |
2970 | continue; | |
2971 | ||
2972 | BFD_ASSERT (sec->owner == abfd); | |
2973 | } | |
2974 | sect_syms[sec->index] = syms[idx]; | |
2975 | } | |
2976 | } | |
2977 | } | |
2978 | ||
252b5132 RH |
2979 | /* Classify all of the symbols. */ |
2980 | for (idx = 0; idx < symcount; idx++) | |
2981 | { | |
2982 | if (!sym_is_global (abfd, syms[idx])) | |
2983 | num_locals++; | |
2984 | else | |
2985 | num_globals++; | |
2986 | } | |
079e9a2f AM |
2987 | |
2988 | /* We will be adding a section symbol for each BFD section. Most normal | |
2989 | sections will already have a section symbol in outsymbols, but | |
2990 | eg. SHT_GROUP sections will not, and we need the section symbol mapped | |
2991 | at least in that case. */ | |
252b5132 RH |
2992 | for (asect = abfd->sections; asect; asect = asect->next) |
2993 | { | |
079e9a2f | 2994 | if (sect_syms[asect->index] == NULL) |
252b5132 | 2995 | { |
079e9a2f | 2996 | if (!sym_is_global (abfd, asect->symbol)) |
252b5132 RH |
2997 | num_locals++; |
2998 | else | |
2999 | num_globals++; | |
252b5132 RH |
3000 | } |
3001 | } | |
3002 | ||
3003 | /* Now sort the symbols so the local symbols are first. */ | |
dc810e39 | 3004 | amt = (num_locals + num_globals) * sizeof (asymbol *); |
217aa764 | 3005 | new_syms = bfd_alloc (abfd, amt); |
dc810e39 | 3006 | |
252b5132 | 3007 | if (new_syms == NULL) |
b34976b6 | 3008 | return FALSE; |
252b5132 RH |
3009 | |
3010 | for (idx = 0; idx < symcount; idx++) | |
3011 | { | |
3012 | asymbol *sym = syms[idx]; | |
dc810e39 | 3013 | unsigned int i; |
252b5132 RH |
3014 | |
3015 | if (!sym_is_global (abfd, sym)) | |
3016 | i = num_locals2++; | |
3017 | else | |
3018 | i = num_locals + num_globals2++; | |
3019 | new_syms[i] = sym; | |
3020 | sym->udata.i = i + 1; | |
3021 | } | |
3022 | for (asect = abfd->sections; asect; asect = asect->next) | |
3023 | { | |
079e9a2f | 3024 | if (sect_syms[asect->index] == NULL) |
252b5132 | 3025 | { |
079e9a2f | 3026 | asymbol *sym = asect->symbol; |
dc810e39 | 3027 | unsigned int i; |
252b5132 | 3028 | |
079e9a2f | 3029 | sect_syms[asect->index] = sym; |
252b5132 RH |
3030 | if (!sym_is_global (abfd, sym)) |
3031 | i = num_locals2++; | |
3032 | else | |
3033 | i = num_locals + num_globals2++; | |
3034 | new_syms[i] = sym; | |
3035 | sym->udata.i = i + 1; | |
3036 | } | |
3037 | } | |
3038 | ||
3039 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
3040 | ||
3041 | elf_num_locals (abfd) = num_locals; | |
3042 | elf_num_globals (abfd) = num_globals; | |
b34976b6 | 3043 | return TRUE; |
252b5132 RH |
3044 | } |
3045 | ||
3046 | /* Align to the maximum file alignment that could be required for any | |
3047 | ELF data structure. */ | |
3048 | ||
268b6b39 | 3049 | static inline file_ptr |
217aa764 | 3050 | align_file_position (file_ptr off, int align) |
252b5132 RH |
3051 | { |
3052 | return (off + align - 1) & ~(align - 1); | |
3053 | } | |
3054 | ||
3055 | /* Assign a file position to a section, optionally aligning to the | |
3056 | required section alignment. */ | |
3057 | ||
217aa764 AM |
3058 | file_ptr |
3059 | _bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp, | |
3060 | file_ptr offset, | |
3061 | bfd_boolean align) | |
252b5132 RH |
3062 | { |
3063 | if (align) | |
3064 | { | |
3065 | unsigned int al; | |
3066 | ||
3067 | al = i_shdrp->sh_addralign; | |
3068 | if (al > 1) | |
3069 | offset = BFD_ALIGN (offset, al); | |
3070 | } | |
3071 | i_shdrp->sh_offset = offset; | |
3072 | if (i_shdrp->bfd_section != NULL) | |
3073 | i_shdrp->bfd_section->filepos = offset; | |
3074 | if (i_shdrp->sh_type != SHT_NOBITS) | |
3075 | offset += i_shdrp->sh_size; | |
3076 | return offset; | |
3077 | } | |
3078 | ||
3079 | /* Compute the file positions we are going to put the sections at, and | |
3080 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
3081 | is not NULL, this is being called by the ELF backend linker. */ | |
3082 | ||
b34976b6 | 3083 | bfd_boolean |
217aa764 AM |
3084 | _bfd_elf_compute_section_file_positions (bfd *abfd, |
3085 | struct bfd_link_info *link_info) | |
252b5132 | 3086 | { |
9c5bfbb7 | 3087 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
b34976b6 | 3088 | bfd_boolean failed; |
252b5132 RH |
3089 | struct bfd_strtab_hash *strtab; |
3090 | Elf_Internal_Shdr *shstrtab_hdr; | |
3091 | ||
3092 | if (abfd->output_has_begun) | |
b34976b6 | 3093 | return TRUE; |
252b5132 RH |
3094 | |
3095 | /* Do any elf backend specific processing first. */ | |
3096 | if (bed->elf_backend_begin_write_processing) | |
3097 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
3098 | ||
3099 | if (! prep_headers (abfd)) | |
b34976b6 | 3100 | return FALSE; |
252b5132 | 3101 | |
e6c51ed4 NC |
3102 | /* Post process the headers if necessary. */ |
3103 | if (bed->elf_backend_post_process_headers) | |
3104 | (*bed->elf_backend_post_process_headers) (abfd, link_info); | |
3105 | ||
b34976b6 | 3106 | failed = FALSE; |
252b5132 RH |
3107 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); |
3108 | if (failed) | |
b34976b6 | 3109 | return FALSE; |
252b5132 RH |
3110 | |
3111 | if (!assign_section_numbers (abfd)) | |
b34976b6 | 3112 | return FALSE; |
252b5132 RH |
3113 | |
3114 | /* The backend linker builds symbol table information itself. */ | |
3115 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3116 | { | |
3117 | /* Non-zero if doing a relocatable link. */ | |
3118 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
3119 | ||
3120 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
b34976b6 | 3121 | return FALSE; |
252b5132 RH |
3122 | } |
3123 | ||
1126897b | 3124 | if (link_info == NULL) |
dbb410c3 | 3125 | { |
1126897b | 3126 | bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed); |
dbb410c3 | 3127 | if (failed) |
b34976b6 | 3128 | return FALSE; |
dbb410c3 AM |
3129 | } |
3130 | ||
252b5132 RH |
3131 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; |
3132 | /* sh_name was set in prep_headers. */ | |
3133 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
3134 | shstrtab_hdr->sh_flags = 0; | |
3135 | shstrtab_hdr->sh_addr = 0; | |
2b0f7ef9 | 3136 | shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); |
252b5132 RH |
3137 | shstrtab_hdr->sh_entsize = 0; |
3138 | shstrtab_hdr->sh_link = 0; | |
3139 | shstrtab_hdr->sh_info = 0; | |
3140 | /* sh_offset is set in assign_file_positions_except_relocs. */ | |
3141 | shstrtab_hdr->sh_addralign = 1; | |
3142 | ||
c84fca4d | 3143 | if (!assign_file_positions_except_relocs (abfd, link_info)) |
b34976b6 | 3144 | return FALSE; |
252b5132 RH |
3145 | |
3146 | if (link_info == NULL && bfd_get_symcount (abfd) > 0) | |
3147 | { | |
3148 | file_ptr off; | |
3149 | Elf_Internal_Shdr *hdr; | |
3150 | ||
3151 | off = elf_tdata (abfd)->next_file_pos; | |
3152 | ||
3153 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
b34976b6 | 3154 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 3155 | |
9ad5cbcf AM |
3156 | hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
3157 | if (hdr->sh_size != 0) | |
b34976b6 | 3158 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf | 3159 | |
252b5132 | 3160 | hdr = &elf_tdata (abfd)->strtab_hdr; |
b34976b6 | 3161 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 RH |
3162 | |
3163 | elf_tdata (abfd)->next_file_pos = off; | |
3164 | ||
3165 | /* Now that we know where the .strtab section goes, write it | |
3166 | out. */ | |
3167 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
3168 | || ! _bfd_stringtab_emit (abfd, strtab)) | |
b34976b6 | 3169 | return FALSE; |
252b5132 RH |
3170 | _bfd_stringtab_free (strtab); |
3171 | } | |
3172 | ||
b34976b6 | 3173 | abfd->output_has_begun = TRUE; |
252b5132 | 3174 | |
b34976b6 | 3175 | return TRUE; |
252b5132 RH |
3176 | } |
3177 | ||
3178 | /* Create a mapping from a set of sections to a program segment. */ | |
3179 | ||
217aa764 AM |
3180 | static struct elf_segment_map * |
3181 | make_mapping (bfd *abfd, | |
3182 | asection **sections, | |
3183 | unsigned int from, | |
3184 | unsigned int to, | |
3185 | bfd_boolean phdr) | |
252b5132 RH |
3186 | { |
3187 | struct elf_segment_map *m; | |
3188 | unsigned int i; | |
3189 | asection **hdrpp; | |
dc810e39 | 3190 | bfd_size_type amt; |
252b5132 | 3191 | |
dc810e39 AM |
3192 | amt = sizeof (struct elf_segment_map); |
3193 | amt += (to - from - 1) * sizeof (asection *); | |
217aa764 | 3194 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3195 | if (m == NULL) |
3196 | return NULL; | |
3197 | m->next = NULL; | |
3198 | m->p_type = PT_LOAD; | |
3199 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
3200 | m->sections[i - from] = *hdrpp; | |
3201 | m->count = to - from; | |
3202 | ||
3203 | if (from == 0 && phdr) | |
3204 | { | |
3205 | /* Include the headers in the first PT_LOAD segment. */ | |
3206 | m->includes_filehdr = 1; | |
3207 | m->includes_phdrs = 1; | |
3208 | } | |
3209 | ||
3210 | return m; | |
3211 | } | |
3212 | ||
3213 | /* Set up a mapping from BFD sections to program segments. */ | |
3214 | ||
b34976b6 | 3215 | static bfd_boolean |
217aa764 | 3216 | map_sections_to_segments (bfd *abfd) |
252b5132 RH |
3217 | { |
3218 | asection **sections = NULL; | |
3219 | asection *s; | |
3220 | unsigned int i; | |
3221 | unsigned int count; | |
3222 | struct elf_segment_map *mfirst; | |
3223 | struct elf_segment_map **pm; | |
3224 | struct elf_segment_map *m; | |
3225 | asection *last_hdr; | |
baaff79e | 3226 | bfd_vma last_size; |
252b5132 RH |
3227 | unsigned int phdr_index; |
3228 | bfd_vma maxpagesize; | |
3229 | asection **hdrpp; | |
b34976b6 AM |
3230 | bfd_boolean phdr_in_segment = TRUE; |
3231 | bfd_boolean writable; | |
13ae64f3 JJ |
3232 | int tls_count = 0; |
3233 | asection *first_tls = NULL; | |
65765700 | 3234 | asection *dynsec, *eh_frame_hdr; |
dc810e39 | 3235 | bfd_size_type amt; |
252b5132 RH |
3236 | |
3237 | if (elf_tdata (abfd)->segment_map != NULL) | |
b34976b6 | 3238 | return TRUE; |
252b5132 RH |
3239 | |
3240 | if (bfd_count_sections (abfd) == 0) | |
b34976b6 | 3241 | return TRUE; |
252b5132 RH |
3242 | |
3243 | /* Select the allocated sections, and sort them. */ | |
3244 | ||
dc810e39 | 3245 | amt = bfd_count_sections (abfd) * sizeof (asection *); |
217aa764 | 3246 | sections = bfd_malloc (amt); |
252b5132 RH |
3247 | if (sections == NULL) |
3248 | goto error_return; | |
3249 | ||
3250 | i = 0; | |
3251 | for (s = abfd->sections; s != NULL; s = s->next) | |
3252 | { | |
3253 | if ((s->flags & SEC_ALLOC) != 0) | |
3254 | { | |
3255 | sections[i] = s; | |
3256 | ++i; | |
3257 | } | |
3258 | } | |
3259 | BFD_ASSERT (i <= bfd_count_sections (abfd)); | |
3260 | count = i; | |
3261 | ||
3262 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); | |
3263 | ||
3264 | /* Build the mapping. */ | |
3265 | ||
3266 | mfirst = NULL; | |
3267 | pm = &mfirst; | |
3268 | ||
3269 | /* If we have a .interp section, then create a PT_PHDR segment for | |
3270 | the program headers and a PT_INTERP segment for the .interp | |
3271 | section. */ | |
3272 | s = bfd_get_section_by_name (abfd, ".interp"); | |
3273 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
3274 | { | |
dc810e39 | 3275 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3276 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3277 | if (m == NULL) |
3278 | goto error_return; | |
3279 | m->next = NULL; | |
3280 | m->p_type = PT_PHDR; | |
3281 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
3282 | m->p_flags = PF_R | PF_X; | |
3283 | m->p_flags_valid = 1; | |
3284 | m->includes_phdrs = 1; | |
3285 | ||
3286 | *pm = m; | |
3287 | pm = &m->next; | |
3288 | ||
dc810e39 | 3289 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3290 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3291 | if (m == NULL) |
3292 | goto error_return; | |
3293 | m->next = NULL; | |
3294 | m->p_type = PT_INTERP; | |
3295 | m->count = 1; | |
3296 | m->sections[0] = s; | |
3297 | ||
3298 | *pm = m; | |
3299 | pm = &m->next; | |
3300 | } | |
3301 | ||
3302 | /* Look through the sections. We put sections in the same program | |
3303 | segment when the start of the second section can be placed within | |
3304 | a few bytes of the end of the first section. */ | |
3305 | last_hdr = NULL; | |
baaff79e | 3306 | last_size = 0; |
252b5132 RH |
3307 | phdr_index = 0; |
3308 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
b34976b6 | 3309 | writable = FALSE; |
252b5132 RH |
3310 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); |
3311 | if (dynsec != NULL | |
3312 | && (dynsec->flags & SEC_LOAD) == 0) | |
3313 | dynsec = NULL; | |
3314 | ||
3315 | /* Deal with -Ttext or something similar such that the first section | |
3316 | is not adjacent to the program headers. This is an | |
3317 | approximation, since at this point we don't know exactly how many | |
3318 | program headers we will need. */ | |
3319 | if (count > 0) | |
3320 | { | |
3321 | bfd_size_type phdr_size; | |
3322 | ||
3323 | phdr_size = elf_tdata (abfd)->program_header_size; | |
3324 | if (phdr_size == 0) | |
3325 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
3326 | if ((abfd->flags & D_PAGED) == 0 | |
3327 | || sections[0]->lma < phdr_size | |
3328 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) | |
b34976b6 | 3329 | phdr_in_segment = FALSE; |
252b5132 RH |
3330 | } |
3331 | ||
3332 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) | |
3333 | { | |
3334 | asection *hdr; | |
b34976b6 | 3335 | bfd_boolean new_segment; |
252b5132 RH |
3336 | |
3337 | hdr = *hdrpp; | |
3338 | ||
3339 | /* See if this section and the last one will fit in the same | |
3340 | segment. */ | |
3341 | ||
3342 | if (last_hdr == NULL) | |
3343 | { | |
3344 | /* If we don't have a segment yet, then we don't need a new | |
3345 | one (we build the last one after this loop). */ | |
b34976b6 | 3346 | new_segment = FALSE; |
252b5132 RH |
3347 | } |
3348 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
3349 | { | |
3350 | /* If this section has a different relation between the | |
3351 | virtual address and the load address, then we need a new | |
3352 | segment. */ | |
b34976b6 | 3353 | new_segment = TRUE; |
252b5132 | 3354 | } |
baaff79e | 3355 | else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) |
252b5132 RH |
3356 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
3357 | { | |
3358 | /* If putting this section in this segment would force us to | |
3359 | skip a page in the segment, then we need a new segment. */ | |
b34976b6 | 3360 | new_segment = TRUE; |
252b5132 | 3361 | } |
baaff79e JJ |
3362 | else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0 |
3363 | && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0) | |
252b5132 RH |
3364 | { |
3365 | /* We don't want to put a loadable section after a | |
baaff79e JJ |
3366 | nonloadable section in the same segment. |
3367 | Consider .tbss sections as loadable for this purpose. */ | |
b34976b6 | 3368 | new_segment = TRUE; |
252b5132 RH |
3369 | } |
3370 | else if ((abfd->flags & D_PAGED) == 0) | |
3371 | { | |
3372 | /* If the file is not demand paged, which means that we | |
3373 | don't require the sections to be correctly aligned in the | |
3374 | file, then there is no other reason for a new segment. */ | |
b34976b6 | 3375 | new_segment = FALSE; |
252b5132 RH |
3376 | } |
3377 | else if (! writable | |
3378 | && (hdr->flags & SEC_READONLY) == 0 | |
baaff79e | 3379 | && (((last_hdr->lma + last_size - 1) |
b89fe0ee AM |
3380 | & ~(maxpagesize - 1)) |
3381 | != (hdr->lma & ~(maxpagesize - 1)))) | |
252b5132 RH |
3382 | { |
3383 | /* We don't want to put a writable section in a read only | |
3384 | segment, unless they are on the same page in memory | |
3385 | anyhow. We already know that the last section does not | |
3386 | bring us past the current section on the page, so the | |
3387 | only case in which the new section is not on the same | |
3388 | page as the previous section is when the previous section | |
3389 | ends precisely on a page boundary. */ | |
b34976b6 | 3390 | new_segment = TRUE; |
252b5132 RH |
3391 | } |
3392 | else | |
3393 | { | |
3394 | /* Otherwise, we can use the same segment. */ | |
b34976b6 | 3395 | new_segment = FALSE; |
252b5132 RH |
3396 | } |
3397 | ||
3398 | if (! new_segment) | |
3399 | { | |
3400 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3401 | writable = TRUE; |
baaff79e JJ |
3402 | last_hdr = hdr; |
3403 | /* .tbss sections effectively have zero size. */ | |
e5caec89 | 3404 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) |
baaff79e JJ |
3405 | last_size = hdr->_raw_size; |
3406 | else | |
3407 | last_size = 0; | |
252b5132 RH |
3408 | continue; |
3409 | } | |
3410 | ||
3411 | /* We need a new program segment. We must create a new program | |
3412 | header holding all the sections from phdr_index until hdr. */ | |
3413 | ||
3414 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3415 | if (m == NULL) | |
3416 | goto error_return; | |
3417 | ||
3418 | *pm = m; | |
3419 | pm = &m->next; | |
3420 | ||
3421 | if ((hdr->flags & SEC_READONLY) == 0) | |
b34976b6 | 3422 | writable = TRUE; |
252b5132 | 3423 | else |
b34976b6 | 3424 | writable = FALSE; |
252b5132 RH |
3425 | |
3426 | last_hdr = hdr; | |
baaff79e JJ |
3427 | /* .tbss sections effectively have zero size. */ |
3428 | if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) | |
3429 | last_size = hdr->_raw_size; | |
3430 | else | |
3431 | last_size = 0; | |
252b5132 | 3432 | phdr_index = i; |
b34976b6 | 3433 | phdr_in_segment = FALSE; |
252b5132 RH |
3434 | } |
3435 | ||
3436 | /* Create a final PT_LOAD program segment. */ | |
3437 | if (last_hdr != NULL) | |
3438 | { | |
3439 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); | |
3440 | if (m == NULL) | |
3441 | goto error_return; | |
3442 | ||
3443 | *pm = m; | |
3444 | pm = &m->next; | |
3445 | } | |
3446 | ||
3447 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ | |
3448 | if (dynsec != NULL) | |
3449 | { | |
dc810e39 | 3450 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3451 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3452 | if (m == NULL) |
3453 | goto error_return; | |
3454 | m->next = NULL; | |
3455 | m->p_type = PT_DYNAMIC; | |
3456 | m->count = 1; | |
3457 | m->sections[0] = dynsec; | |
3458 | ||
3459 | *pm = m; | |
3460 | pm = &m->next; | |
3461 | } | |
3462 | ||
3463 | /* For each loadable .note section, add a PT_NOTE segment. We don't | |
3464 | use bfd_get_section_by_name, because if we link together | |
3465 | nonloadable .note sections and loadable .note sections, we will | |
3466 | generate two .note sections in the output file. FIXME: Using | |
3467 | names for section types is bogus anyhow. */ | |
3468 | for (s = abfd->sections; s != NULL; s = s->next) | |
3469 | { | |
3470 | if ((s->flags & SEC_LOAD) != 0 | |
3471 | && strncmp (s->name, ".note", 5) == 0) | |
3472 | { | |
dc810e39 | 3473 | amt = sizeof (struct elf_segment_map); |
217aa764 | 3474 | m = bfd_zalloc (abfd, amt); |
252b5132 RH |
3475 | if (m == NULL) |
3476 | goto error_return; | |
3477 | m->next = NULL; | |
3478 | m->p_type = PT_NOTE; | |
3479 | m->count = 1; | |
3480 | m->sections[0] = s; | |
3481 | ||
3482 | *pm = m; | |
3483 | pm = &m->next; | |
3484 | } | |
13ae64f3 JJ |
3485 | if (s->flags & SEC_THREAD_LOCAL) |
3486 | { | |
3487 | if (! tls_count) | |
3488 | first_tls = s; | |
3489 | tls_count++; | |
3490 | } | |
3491 | } | |
3492 | ||
3493 | /* If there are any SHF_TLS output sections, add PT_TLS segment. */ | |
3494 | if (tls_count > 0) | |
3495 | { | |
3496 | int i; | |
3497 | ||
3498 | amt = sizeof (struct elf_segment_map); | |
3499 | amt += (tls_count - 1) * sizeof (asection *); | |
217aa764 | 3500 | m = bfd_zalloc (abfd, amt); |
13ae64f3 JJ |
3501 | if (m == NULL) |
3502 | goto error_return; | |
3503 | m->next = NULL; | |
3504 | m->p_type = PT_TLS; | |
3505 | m->count = tls_count; | |
3506 | /* Mandated PF_R. */ | |
3507 | m->p_flags = PF_R; | |
3508 | m->p_flags_valid = 1; | |
3509 | for (i = 0; i < tls_count; ++i) | |
3510 | { | |
3511 | BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); | |
3512 | m->sections[i] = first_tls; | |
3513 | first_tls = first_tls->next; | |
3514 | } | |
3515 | ||
3516 | *pm = m; | |
3517 | pm = &m->next; | |
252b5132 RH |
3518 | } |
3519 | ||
65765700 JJ |
3520 | /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME |
3521 | segment. */ | |
126495ed AM |
3522 | eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr; |
3523 | if (eh_frame_hdr != NULL | |
3524 | && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0) | |
65765700 JJ |
3525 | { |
3526 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3527 | m = bfd_zalloc (abfd, amt); |
65765700 JJ |
3528 | if (m == NULL) |
3529 | goto error_return; | |
3530 | m->next = NULL; | |
3531 | m->p_type = PT_GNU_EH_FRAME; | |
3532 | m->count = 1; | |
126495ed | 3533 | m->sections[0] = eh_frame_hdr->output_section; |
65765700 JJ |
3534 | |
3535 | *pm = m; | |
3536 | pm = &m->next; | |
3537 | } | |
3538 | ||
9ee5e499 JJ |
3539 | if (elf_tdata (abfd)->stack_flags) |
3540 | { | |
3541 | amt = sizeof (struct elf_segment_map); | |
217aa764 | 3542 | m = bfd_zalloc (abfd, amt); |
9ee5e499 JJ |
3543 | if (m == NULL) |
3544 | goto error_return; | |
3545 | m->next = NULL; | |
3546 | m->p_type = PT_GNU_STACK; | |
3547 | m->p_flags = elf_tdata (abfd)->stack_flags; | |
3548 | m->p_flags_valid = 1; | |
3549 | ||
3550 | *pm = m; | |
3551 | pm = &m->next; | |
3552 | } | |
3553 | ||
8c37241b JJ |
3554 | if (elf_tdata (abfd)->relro) |
3555 | { | |
3556 | amt = sizeof (struct elf_segment_map); | |
3557 | m = bfd_zalloc (abfd, amt); | |
3558 | if (m == NULL) | |
3559 | goto error_return; | |
3560 | m->next = NULL; | |
3561 | m->p_type = PT_GNU_RELRO; | |
3562 | m->p_flags = PF_R; | |
3563 | m->p_flags_valid = 1; | |
3564 | ||
3565 | *pm = m; | |
3566 | pm = &m->next; | |
3567 | } | |
3568 | ||
252b5132 RH |
3569 | free (sections); |
3570 | sections = NULL; | |
3571 | ||
3572 | elf_tdata (abfd)->segment_map = mfirst; | |
b34976b6 | 3573 | return TRUE; |
252b5132 RH |
3574 | |
3575 | error_return: | |
3576 | if (sections != NULL) | |
3577 | free (sections); | |
b34976b6 | 3578 | return FALSE; |
252b5132 RH |
3579 | } |
3580 | ||
3581 | /* Sort sections by address. */ | |
3582 | ||
3583 | static int | |
217aa764 | 3584 | elf_sort_sections (const void *arg1, const void *arg2) |
252b5132 RH |
3585 | { |
3586 | const asection *sec1 = *(const asection **) arg1; | |
3587 | const asection *sec2 = *(const asection **) arg2; | |
eecdbe52 | 3588 | bfd_size_type size1, size2; |
252b5132 RH |
3589 | |
3590 | /* Sort by LMA first, since this is the address used to | |
3591 | place the section into a segment. */ | |
3592 | if (sec1->lma < sec2->lma) | |
3593 | return -1; | |
3594 | else if (sec1->lma > sec2->lma) | |
3595 | return 1; | |
3596 | ||
3597 | /* Then sort by VMA. Normally the LMA and the VMA will be | |
3598 | the same, and this will do nothing. */ | |
3599 | if (sec1->vma < sec2->vma) | |
3600 | return -1; | |
3601 | else if (sec1->vma > sec2->vma) | |
3602 | return 1; | |
3603 | ||
3604 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ | |
3605 | ||
07c6e936 | 3606 | #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) |
252b5132 RH |
3607 | |
3608 | if (TOEND (sec1)) | |
3609 | { | |
3610 | if (TOEND (sec2)) | |
00a7cdc5 NC |
3611 | { |
3612 | /* If the indicies are the same, do not return 0 | |
3613 | here, but continue to try the next comparison. */ | |
3614 | if (sec1->target_index - sec2->target_index != 0) | |
3615 | return sec1->target_index - sec2->target_index; | |
3616 | } | |
252b5132 RH |
3617 | else |
3618 | return 1; | |
3619 | } | |
00a7cdc5 | 3620 | else if (TOEND (sec2)) |
252b5132 RH |
3621 | return -1; |
3622 | ||
3623 | #undef TOEND | |
3624 | ||
00a7cdc5 NC |
3625 | /* Sort by size, to put zero sized sections |
3626 | before others at the same address. */ | |
252b5132 | 3627 | |
eecdbe52 JJ |
3628 | size1 = (sec1->flags & SEC_LOAD) ? sec1->_raw_size : 0; |
3629 | size2 = (sec2->flags & SEC_LOAD) ? sec2->_raw_size : 0; | |
3630 | ||
3631 | if (size1 < size2) | |
252b5132 | 3632 | return -1; |
eecdbe52 | 3633 | if (size1 > size2) |
252b5132 RH |
3634 | return 1; |
3635 | ||
3636 | return sec1->target_index - sec2->target_index; | |
3637 | } | |
3638 | ||
340b6d91 AC |
3639 | /* Ian Lance Taylor writes: |
3640 | ||
3641 | We shouldn't be using % with a negative signed number. That's just | |
3642 | not good. We have to make sure either that the number is not | |
3643 | negative, or that the number has an unsigned type. When the types | |
3644 | are all the same size they wind up as unsigned. When file_ptr is a | |
3645 | larger signed type, the arithmetic winds up as signed long long, | |
3646 | which is wrong. | |
3647 | ||
3648 | What we're trying to say here is something like ``increase OFF by | |
3649 | the least amount that will cause it to be equal to the VMA modulo | |
3650 | the page size.'' */ | |
3651 | /* In other words, something like: | |
3652 | ||
3653 | vma_offset = m->sections[0]->vma % bed->maxpagesize; | |
3654 | off_offset = off % bed->maxpagesize; | |
3655 | if (vma_offset < off_offset) | |
3656 | adjustment = vma_offset + bed->maxpagesize - off_offset; | |
3657 | else | |
3658 | adjustment = vma_offset - off_offset; | |
3659 | ||
3660 | which can can be collapsed into the expression below. */ | |
3661 | ||
3662 | static file_ptr | |
3663 | vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) | |
3664 | { | |
3665 | return ((vma - off) % maxpagesize); | |
3666 | } | |
3667 | ||
252b5132 RH |
3668 | /* Assign file positions to the sections based on the mapping from |
3669 | sections to segments. This function also sets up some fields in | |
3670 | the file header, and writes out the program headers. */ | |
3671 | ||
b34976b6 | 3672 | static bfd_boolean |
c84fca4d | 3673 | assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) |
252b5132 RH |
3674 | { |
3675 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3676 | unsigned int count; | |
3677 | struct elf_segment_map *m; | |
3678 | unsigned int alloc; | |
3679 | Elf_Internal_Phdr *phdrs; | |
3680 | file_ptr off, voff; | |
3681 | bfd_vma filehdr_vaddr, filehdr_paddr; | |
3682 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
3683 | Elf_Internal_Phdr *p; | |
dc810e39 | 3684 | bfd_size_type amt; |
252b5132 RH |
3685 | |
3686 | if (elf_tdata (abfd)->segment_map == NULL) | |
3687 | { | |
3688 | if (! map_sections_to_segments (abfd)) | |
b34976b6 | 3689 | return FALSE; |
252b5132 | 3690 | } |
1ed89aa9 NC |
3691 | else |
3692 | { | |
3693 | /* The placement algorithm assumes that non allocated sections are | |
3694 | not in PT_LOAD segments. We ensure this here by removing such | |
3695 | sections from the segment map. */ | |
3696 | for (m = elf_tdata (abfd)->segment_map; | |
3697 | m != NULL; | |
3698 | m = m->next) | |
3699 | { | |
3700 | unsigned int new_count; | |
3701 | unsigned int i; | |
3702 | ||
3703 | if (m->p_type != PT_LOAD) | |
3704 | continue; | |
3705 | ||
3706 | new_count = 0; | |
3707 | for (i = 0; i < m->count; i ++) | |
3708 | { | |
3709 | if ((m->sections[i]->flags & SEC_ALLOC) != 0) | |
3710 | { | |
47d9a591 | 3711 | if (i != new_count) |
1ed89aa9 NC |
3712 | m->sections[new_count] = m->sections[i]; |
3713 | ||
3714 | new_count ++; | |
3715 | } | |
3716 | } | |
3717 | ||
3718 | if (new_count != m->count) | |
3719 | m->count = new_count; | |
3720 | } | |
3721 | } | |
252b5132 RH |
3722 | |
3723 | if (bed->elf_backend_modify_segment_map) | |
3724 | { | |
c84fca4d | 3725 | if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info)) |
b34976b6 | 3726 | return FALSE; |
252b5132 RH |
3727 | } |
3728 | ||
3729 | count = 0; | |
3730 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
3731 | ++count; | |
3732 | ||
3733 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; | |
3734 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
3735 | elf_elfheader (abfd)->e_phnum = count; | |
3736 | ||
3737 | if (count == 0) | |
b34976b6 | 3738 | return TRUE; |
252b5132 RH |
3739 | |
3740 | /* If we already counted the number of program segments, make sure | |
3741 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
3742 | is used in a linker script. */ | |
3743 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
3744 | if (alloc != 0 && count > alloc) | |
3745 | { | |
3746 | ((*_bfd_error_handler) | |
3747 | (_("%s: Not enough room for program headers (allocated %u, need %u)"), | |
3748 | bfd_get_filename (abfd), alloc, count)); | |
3749 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3750 | return FALSE; |
252b5132 RH |
3751 | } |
3752 | ||
3753 | if (alloc == 0) | |
3754 | alloc = count; | |
3755 | ||
dc810e39 | 3756 | amt = alloc * sizeof (Elf_Internal_Phdr); |
217aa764 | 3757 | phdrs = bfd_alloc (abfd, amt); |
252b5132 | 3758 | if (phdrs == NULL) |
b34976b6 | 3759 | return FALSE; |
252b5132 RH |
3760 | |
3761 | off = bed->s->sizeof_ehdr; | |
3762 | off += alloc * bed->s->sizeof_phdr; | |
3763 | ||
3764 | filehdr_vaddr = 0; | |
3765 | filehdr_paddr = 0; | |
3766 | phdrs_vaddr = 0; | |
3767 | phdrs_paddr = 0; | |
3768 | ||
3769 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
3770 | m != NULL; | |
3771 | m = m->next, p++) | |
3772 | { | |
3773 | unsigned int i; | |
3774 | asection **secpp; | |
3775 | ||
3776 | /* If elf_segment_map is not from map_sections_to_segments, the | |
47d9a591 | 3777 | sections may not be correctly ordered. NOTE: sorting should |
52e9b619 MS |
3778 | not be done to the PT_NOTE section of a corefile, which may |
3779 | contain several pseudo-sections artificially created by bfd. | |
3780 | Sorting these pseudo-sections breaks things badly. */ | |
47d9a591 AM |
3781 | if (m->count > 1 |
3782 | && !(elf_elfheader (abfd)->e_type == ET_CORE | |
52e9b619 | 3783 | && m->p_type == PT_NOTE)) |
252b5132 RH |
3784 | qsort (m->sections, (size_t) m->count, sizeof (asection *), |
3785 | elf_sort_sections); | |
3786 | ||
3787 | p->p_type = m->p_type; | |
28a7f3e7 | 3788 | p->p_flags = m->p_flags; |
252b5132 RH |
3789 | |
3790 | if (p->p_type == PT_LOAD | |
3791 | && m->count > 0 | |
3792 | && (m->sections[0]->flags & SEC_ALLOC) != 0) | |
3793 | { | |
3794 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
3795 | off += vma_page_aligned_bias (m->sections[0]->vma, off, |
3796 | bed->maxpagesize); | |
252b5132 RH |
3797 | else |
3798 | { | |
3799 | bfd_size_type align; | |
3800 | ||
3801 | align = 0; | |
3802 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) | |
3803 | { | |
3804 | bfd_size_type secalign; | |
3805 | ||
3806 | secalign = bfd_get_section_alignment (abfd, *secpp); | |
3807 | if (secalign > align) | |
3808 | align = secalign; | |
3809 | } | |
3810 | ||
340b6d91 AC |
3811 | off += vma_page_aligned_bias (m->sections[0]->vma, off, |
3812 | 1 << align); | |
252b5132 RH |
3813 | } |
3814 | } | |
3815 | ||
3816 | if (m->count == 0) | |
3817 | p->p_vaddr = 0; | |
3818 | else | |
3819 | p->p_vaddr = m->sections[0]->vma; | |
3820 | ||
3821 | if (m->p_paddr_valid) | |
3822 | p->p_paddr = m->p_paddr; | |
3823 | else if (m->count == 0) | |
3824 | p->p_paddr = 0; | |
3825 | else | |
3826 | p->p_paddr = m->sections[0]->lma; | |
3827 | ||
3828 | if (p->p_type == PT_LOAD | |
3829 | && (abfd->flags & D_PAGED) != 0) | |
3830 | p->p_align = bed->maxpagesize; | |
3831 | else if (m->count == 0) | |
45d6a902 | 3832 | p->p_align = 1 << bed->s->log_file_align; |
252b5132 RH |
3833 | else |
3834 | p->p_align = 0; | |
3835 | ||
3836 | p->p_offset = 0; | |
3837 | p->p_filesz = 0; | |
3838 | p->p_memsz = 0; | |
3839 | ||
3840 | if (m->includes_filehdr) | |
3841 | { | |
3842 | if (! m->p_flags_valid) | |
3843 | p->p_flags |= PF_R; | |
3844 | p->p_offset = 0; | |
3845 | p->p_filesz = bed->s->sizeof_ehdr; | |
3846 | p->p_memsz = bed->s->sizeof_ehdr; | |
3847 | if (m->count > 0) | |
3848 | { | |
3849 | BFD_ASSERT (p->p_type == PT_LOAD); | |
3850 | ||
3851 | if (p->p_vaddr < (bfd_vma) off) | |
3852 | { | |
caf47ea6 AM |
3853 | (*_bfd_error_handler) |
3854 | (_("%s: Not enough room for program headers, try linking with -N"), | |
3855 | bfd_get_filename (abfd)); | |
252b5132 | 3856 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3857 | return FALSE; |
252b5132 RH |
3858 | } |
3859 | ||
3860 | p->p_vaddr -= off; | |
3861 | if (! m->p_paddr_valid) | |
3862 | p->p_paddr -= off; | |
3863 | } | |
3864 | if (p->p_type == PT_LOAD) | |
3865 | { | |
3866 | filehdr_vaddr = p->p_vaddr; | |
3867 | filehdr_paddr = p->p_paddr; | |
3868 | } | |
3869 | } | |
3870 | ||
3871 | if (m->includes_phdrs) | |
3872 | { | |
3873 | if (! m->p_flags_valid) | |
3874 | p->p_flags |= PF_R; | |
3875 | ||
3876 | if (m->includes_filehdr) | |
3877 | { | |
3878 | if (p->p_type == PT_LOAD) | |
3879 | { | |
3880 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; | |
3881 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
3882 | } | |
3883 | } | |
3884 | else | |
3885 | { | |
3886 | p->p_offset = bed->s->sizeof_ehdr; | |
3887 | ||
3888 | if (m->count > 0) | |
3889 | { | |
3890 | BFD_ASSERT (p->p_type == PT_LOAD); | |
3891 | p->p_vaddr -= off - p->p_offset; | |
3892 | if (! m->p_paddr_valid) | |
3893 | p->p_paddr -= off - p->p_offset; | |
3894 | } | |
3895 | ||
3896 | if (p->p_type == PT_LOAD) | |
3897 | { | |
3898 | phdrs_vaddr = p->p_vaddr; | |
3899 | phdrs_paddr = p->p_paddr; | |
3900 | } | |
3901 | else | |
3902 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
3903 | } | |
3904 | ||
3905 | p->p_filesz += alloc * bed->s->sizeof_phdr; | |
3906 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
3907 | } | |
3908 | ||
3909 | if (p->p_type == PT_LOAD | |
3910 | || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)) | |
3911 | { | |
3912 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
3913 | p->p_offset = off; | |
3914 | else | |
3915 | { | |
3916 | file_ptr adjust; | |
3917 | ||
3918 | adjust = off - (p->p_offset + p->p_filesz); | |
3919 | p->p_filesz += adjust; | |
3920 | p->p_memsz += adjust; | |
3921 | } | |
3922 | } | |
3923 | ||
3924 | voff = off; | |
3925 | ||
3926 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) | |
3927 | { | |
3928 | asection *sec; | |
3929 | flagword flags; | |
3930 | bfd_size_type align; | |
3931 | ||
3932 | sec = *secpp; | |
3933 | flags = sec->flags; | |
3934 | align = 1 << bfd_get_section_alignment (abfd, sec); | |
3935 | ||
3936 | /* The section may have artificial alignment forced by a | |
3937 | link script. Notice this case by the gap between the | |
f5ffc919 NC |
3938 | cumulative phdr lma and the section's lma. */ |
3939 | if (p->p_paddr + p->p_memsz < sec->lma) | |
252b5132 | 3940 | { |
f5ffc919 | 3941 | bfd_vma adjust = sec->lma - (p->p_paddr + p->p_memsz); |
252b5132 RH |
3942 | |
3943 | p->p_memsz += adjust; | |
eecdbe52 JJ |
3944 | if (p->p_type == PT_LOAD |
3945 | || (p->p_type == PT_NOTE | |
3946 | && bfd_get_format (abfd) == bfd_core)) | |
3947 | { | |
3948 | off += adjust; | |
3949 | voff += adjust; | |
3950 | } | |
3951 | if ((flags & SEC_LOAD) != 0 | |
3952 | || (flags & SEC_THREAD_LOCAL) != 0) | |
252b5132 RH |
3953 | p->p_filesz += adjust; |
3954 | } | |
3955 | ||
3956 | if (p->p_type == PT_LOAD) | |
3957 | { | |
3958 | bfd_signed_vma adjust; | |
3959 | ||
3960 | if ((flags & SEC_LOAD) != 0) | |
3961 | { | |
3962 | adjust = sec->lma - (p->p_paddr + p->p_memsz); | |
3963 | if (adjust < 0) | |
3964 | adjust = 0; | |
3965 | } | |
3966 | else if ((flags & SEC_ALLOC) != 0) | |
3967 | { | |
3968 | /* The section VMA must equal the file position | |
3969 | modulo the page size. FIXME: I'm not sure if | |
3970 | this adjustment is really necessary. We used to | |
3971 | not have the SEC_LOAD case just above, and then | |
3972 | this was necessary, but now I'm not sure. */ | |
3973 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
3974 | adjust = vma_page_aligned_bias (sec->vma, voff, |
3975 | bed->maxpagesize); | |
252b5132 | 3976 | else |
340b6d91 AC |
3977 | adjust = vma_page_aligned_bias (sec->vma, voff, |
3978 | align); | |
252b5132 RH |
3979 | } |
3980 | else | |
3981 | adjust = 0; | |
3982 | ||
3983 | if (adjust != 0) | |
3984 | { | |
3985 | if (i == 0) | |
3986 | { | |
cdc7c09f NC |
3987 | (* _bfd_error_handler) (_("\ |
3988 | Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"), | |
3989 | bfd_section_name (abfd, sec), | |
3990 | sec->lma, | |
3991 | p->p_paddr); | |
b34976b6 | 3992 | return FALSE; |
252b5132 RH |
3993 | } |
3994 | p->p_memsz += adjust; | |
3995 | off += adjust; | |
3996 | voff += adjust; | |
3997 | if ((flags & SEC_LOAD) != 0) | |
3998 | p->p_filesz += adjust; | |
3999 | } | |
4000 | ||
4001 | sec->filepos = off; | |
4002 | ||
4003 | /* We check SEC_HAS_CONTENTS here because if NOLOAD is | |
4004 | used in a linker script we may have a section with | |
4005 | SEC_LOAD clear but which is supposed to have | |
4006 | contents. */ | |
4007 | if ((flags & SEC_LOAD) != 0 | |
4008 | || (flags & SEC_HAS_CONTENTS) != 0) | |
4009 | off += sec->_raw_size; | |
4010 | ||
eecdbe52 JJ |
4011 | if ((flags & SEC_ALLOC) != 0 |
4012 | && ((flags & SEC_LOAD) != 0 | |
4013 | || (flags & SEC_THREAD_LOCAL) == 0)) | |
252b5132 RH |
4014 | voff += sec->_raw_size; |
4015 | } | |
4016 | ||
4017 | if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core) | |
4018 | { | |
4a938328 MS |
4019 | /* The actual "note" segment has i == 0. |
4020 | This is the one that actually contains everything. */ | |
4021 | if (i == 0) | |
4022 | { | |
252b5132 RH |
4023 | sec->filepos = off; |
4024 | p->p_filesz = sec->_raw_size; | |
4025 | off += sec->_raw_size; | |
4026 | voff = off; | |
4027 | } | |
4a938328 | 4028 | else |
252b5132 | 4029 | { |
4a938328 | 4030 | /* Fake sections -- don't need to be written. */ |
252b5132 RH |
4031 | sec->filepos = 0; |
4032 | sec->_raw_size = 0; | |
4a938328 | 4033 | flags = sec->flags = 0; |
252b5132 RH |
4034 | } |
4035 | p->p_memsz = 0; | |
4036 | p->p_align = 1; | |
4037 | } | |
4038 | else | |
4039 | { | |
eecdbe52 JJ |
4040 | if ((sec->flags & SEC_LOAD) != 0 |
4041 | || (sec->flags & SEC_THREAD_LOCAL) == 0 | |
4042 | || p->p_type == PT_TLS) | |
252b5132 RH |
4043 | p->p_memsz += sec->_raw_size; |
4044 | ||
4045 | if ((flags & SEC_LOAD) != 0) | |
4046 | p->p_filesz += sec->_raw_size; | |
4047 | ||
13ae64f3 JJ |
4048 | if (p->p_type == PT_TLS |
4049 | && sec->_raw_size == 0 | |
4050 | && (sec->flags & SEC_HAS_CONTENTS) == 0) | |
4051 | { | |
4052 | struct bfd_link_order *o; | |
4053 | bfd_vma tbss_size = 0; | |
4054 | ||
4055 | for (o = sec->link_order_head; o != NULL; o = o->next) | |
4056 | if (tbss_size < o->offset + o->size) | |
4057 | tbss_size = o->offset + o->size; | |
4058 | ||
4059 | p->p_memsz += tbss_size; | |
4060 | } | |
4061 | ||
252b5132 RH |
4062 | if (align > p->p_align |
4063 | && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) | |
4064 | p->p_align = align; | |
4065 | } | |
4066 | ||
4067 | if (! m->p_flags_valid) | |
4068 | { | |
4069 | p->p_flags |= PF_R; | |
4070 | if ((flags & SEC_CODE) != 0) | |
4071 | p->p_flags |= PF_X; | |
4072 | if ((flags & SEC_READONLY) == 0) | |
4073 | p->p_flags |= PF_W; | |
4074 | } | |
4075 | } | |
4076 | } | |
4077 | ||
4078 | /* Now that we have set the section file positions, we can set up | |
4079 | the file positions for the non PT_LOAD segments. */ | |
4080 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
4081 | m != NULL; | |
4082 | m = m->next, p++) | |
4083 | { | |
4084 | if (p->p_type != PT_LOAD && m->count > 0) | |
4085 | { | |
4086 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); | |
4087 | p->p_offset = m->sections[0]->filepos; | |
4088 | } | |
4089 | if (m->count == 0) | |
4090 | { | |
4091 | if (m->includes_filehdr) | |
4092 | { | |
4093 | p->p_vaddr = filehdr_vaddr; | |
4094 | if (! m->p_paddr_valid) | |
4095 | p->p_paddr = filehdr_paddr; | |
4096 | } | |
4097 | else if (m->includes_phdrs) | |
4098 | { | |
4099 | p->p_vaddr = phdrs_vaddr; | |
4100 | if (! m->p_paddr_valid) | |
4101 | p->p_paddr = phdrs_paddr; | |
4102 | } | |
8c37241b JJ |
4103 | else if (p->p_type == PT_GNU_RELRO) |
4104 | { | |
4105 | Elf_Internal_Phdr *lp; | |
4106 | ||
4107 | for (lp = phdrs; lp < phdrs + count; ++lp) | |
4108 | { | |
4109 | if (lp->p_type == PT_LOAD | |
4110 | && lp->p_vaddr <= link_info->relro_end | |
4111 | && lp->p_vaddr >= link_info->relro_start | |
4112 | && lp->p_vaddr + lp->p_filesz | |
4113 | >= link_info->relro_end) | |
4114 | break; | |
4115 | } | |
4116 | ||
4117 | if (lp < phdrs + count | |
4118 | && link_info->relro_end > lp->p_vaddr) | |
4119 | { | |
4120 | p->p_vaddr = lp->p_vaddr; | |
4121 | p->p_paddr = lp->p_paddr; | |
4122 | p->p_offset = lp->p_offset; | |
4123 | p->p_filesz = link_info->relro_end - lp->p_vaddr; | |
4124 | p->p_memsz = p->p_filesz; | |
4125 | p->p_align = 1; | |
4126 | p->p_flags = (lp->p_flags & ~PF_W); | |
4127 | } | |
4128 | else | |
4129 | { | |
4130 | memset (p, 0, sizeof *p); | |
4131 | p->p_type = PT_NULL; | |
4132 | } | |
4133 | } | |
252b5132 RH |
4134 | } |
4135 | } | |
4136 | ||
4137 | /* Clear out any program headers we allocated but did not use. */ | |
4138 | for (; count < alloc; count++, p++) | |
4139 | { | |
4140 | memset (p, 0, sizeof *p); | |
4141 | p->p_type = PT_NULL; | |
4142 | } | |
4143 | ||
4144 | elf_tdata (abfd)->phdr = phdrs; | |
4145 | ||
4146 | elf_tdata (abfd)->next_file_pos = off; | |
4147 | ||
4148 | /* Write out the program headers. */ | |
dc810e39 | 4149 | if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0 |
252b5132 | 4150 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) |
b34976b6 | 4151 | return FALSE; |
252b5132 | 4152 | |
b34976b6 | 4153 | return TRUE; |
252b5132 RH |
4154 | } |
4155 | ||
4156 | /* Get the size of the program header. | |
4157 | ||
4158 | If this is called by the linker before any of the section VMA's are set, it | |
4159 | can't calculate the correct value for a strange memory layout. This only | |
4160 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
4161 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
4162 | data segment (exclusive of .interp and .dynamic). | |
4163 | ||
4164 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
4165 | will be two segments. */ | |
4166 | ||
4167 | static bfd_size_type | |
217aa764 | 4168 | get_program_header_size (bfd *abfd) |
252b5132 RH |
4169 | { |
4170 | size_t segs; | |
4171 | asection *s; | |
9c5bfbb7 | 4172 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4173 | |
4174 | /* We can't return a different result each time we're called. */ | |
4175 | if (elf_tdata (abfd)->program_header_size != 0) | |
4176 | return elf_tdata (abfd)->program_header_size; | |
4177 | ||
4178 | if (elf_tdata (abfd)->segment_map != NULL) | |
4179 | { | |
4180 | struct elf_segment_map *m; | |
4181 | ||
4182 | segs = 0; | |
4183 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
4184 | ++segs; | |
4185 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4186 | return elf_tdata (abfd)->program_header_size; | |
4187 | } | |
4188 | ||
4189 | /* Assume we will need exactly two PT_LOAD segments: one for text | |
4190 | and one for data. */ | |
4191 | segs = 2; | |
4192 | ||
4193 | s = bfd_get_section_by_name (abfd, ".interp"); | |
4194 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
4195 | { | |
4196 | /* If we have a loadable interpreter section, we need a | |
4197 | PT_INTERP segment. In this case, assume we also need a | |
ab3acfbe | 4198 | PT_PHDR segment, although that may not be true for all |
252b5132 RH |
4199 | targets. */ |
4200 | segs += 2; | |
4201 | } | |
4202 | ||
4203 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) | |
4204 | { | |
4205 | /* We need a PT_DYNAMIC segment. */ | |
4206 | ++segs; | |
4207 | } | |
4208 | ||
126495ed | 4209 | if (elf_tdata (abfd)->eh_frame_hdr) |
65765700 JJ |
4210 | { |
4211 | /* We need a PT_GNU_EH_FRAME segment. */ | |
4212 | ++segs; | |
4213 | } | |
4214 | ||
9ee5e499 JJ |
4215 | if (elf_tdata (abfd)->stack_flags) |
4216 | { | |
4217 | /* We need a PT_GNU_STACK segment. */ | |
4218 | ++segs; | |
4219 | } | |
4220 | ||
8c37241b JJ |
4221 | if (elf_tdata (abfd)->relro) |
4222 | { | |
4223 | /* We need a PT_GNU_RELRO segment. */ | |
4224 | ++segs; | |
4225 | } | |
4226 | ||
252b5132 RH |
4227 | for (s = abfd->sections; s != NULL; s = s->next) |
4228 | { | |
4229 | if ((s->flags & SEC_LOAD) != 0 | |
4230 | && strncmp (s->name, ".note", 5) == 0) | |
4231 | { | |
4232 | /* We need a PT_NOTE segment. */ | |
4233 | ++segs; | |
4234 | } | |
4235 | } | |
4236 | ||
13ae64f3 JJ |
4237 | for (s = abfd->sections; s != NULL; s = s->next) |
4238 | { | |
4239 | if (s->flags & SEC_THREAD_LOCAL) | |
4240 | { | |
4241 | /* We need a PT_TLS segment. */ | |
4242 | ++segs; | |
4243 | break; | |
4244 | } | |
4245 | } | |
4246 | ||
252b5132 RH |
4247 | /* Let the backend count up any program headers it might need. */ |
4248 | if (bed->elf_backend_additional_program_headers) | |
4249 | { | |
4250 | int a; | |
4251 | ||
4252 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
4253 | if (a == -1) | |
4254 | abort (); | |
4255 | segs += a; | |
4256 | } | |
4257 | ||
4258 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
4259 | return elf_tdata (abfd)->program_header_size; | |
4260 | } | |
4261 | ||
4262 | /* Work out the file positions of all the sections. This is called by | |
4263 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
4264 | VMAs must be known before this is called. | |
4265 | ||
4266 | We do not consider reloc sections at this point, unless they form | |
4267 | part of the loadable image. Reloc sections are assigned file | |
4268 | positions in assign_file_positions_for_relocs, which is called by | |
4269 | write_object_contents and final_link. | |
4270 | ||
4271 | We also don't set the positions of the .symtab and .strtab here. */ | |
4272 | ||
b34976b6 | 4273 | static bfd_boolean |
c84fca4d AO |
4274 | assign_file_positions_except_relocs (bfd *abfd, |
4275 | struct bfd_link_info *link_info) | |
252b5132 RH |
4276 | { |
4277 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
4278 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
4279 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
9ad5cbcf | 4280 | unsigned int num_sec = elf_numsections (abfd); |
252b5132 | 4281 | file_ptr off; |
9c5bfbb7 | 4282 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4283 | |
4284 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 | |
4285 | && bfd_get_format (abfd) != bfd_core) | |
4286 | { | |
4287 | Elf_Internal_Shdr **hdrpp; | |
4288 | unsigned int i; | |
4289 | ||
4290 | /* Start after the ELF header. */ | |
4291 | off = i_ehdrp->e_ehsize; | |
4292 | ||
4293 | /* We are not creating an executable, which means that we are | |
4294 | not creating a program header, and that the actual order of | |
4295 | the sections in the file is unimportant. */ | |
9ad5cbcf | 4296 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4297 | { |
4298 | Elf_Internal_Shdr *hdr; | |
4299 | ||
4300 | hdr = *hdrpp; | |
9ad5cbcf AM |
4301 | if (hdr->sh_type == SHT_REL |
4302 | || hdr->sh_type == SHT_RELA | |
4303 | || i == tdata->symtab_section | |
4304 | || i == tdata->symtab_shndx_section | |
252b5132 RH |
4305 | || i == tdata->strtab_section) |
4306 | { | |
4307 | hdr->sh_offset = -1; | |
252b5132 | 4308 | } |
9ad5cbcf | 4309 | else |
b34976b6 | 4310 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
252b5132 | 4311 | |
9ad5cbcf AM |
4312 | if (i == SHN_LORESERVE - 1) |
4313 | { | |
4314 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4315 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4316 | } | |
252b5132 RH |
4317 | } |
4318 | } | |
4319 | else | |
4320 | { | |
4321 | unsigned int i; | |
4322 | Elf_Internal_Shdr **hdrpp; | |
4323 | ||
4324 | /* Assign file positions for the loaded sections based on the | |
4325 | assignment of sections to segments. */ | |
c84fca4d | 4326 | if (! assign_file_positions_for_segments (abfd, link_info)) |
b34976b6 | 4327 | return FALSE; |
252b5132 RH |
4328 | |
4329 | /* Assign file positions for the other sections. */ | |
4330 | ||
4331 | off = elf_tdata (abfd)->next_file_pos; | |
9ad5cbcf | 4332 | for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++) |
252b5132 RH |
4333 | { |
4334 | Elf_Internal_Shdr *hdr; | |
4335 | ||
4336 | hdr = *hdrpp; | |
4337 | if (hdr->bfd_section != NULL | |
4338 | && hdr->bfd_section->filepos != 0) | |
4339 | hdr->sh_offset = hdr->bfd_section->filepos; | |
4340 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
4341 | { | |
4342 | ((*_bfd_error_handler) | |
4343 | (_("%s: warning: allocated section `%s' not in segment"), | |
4344 | bfd_get_filename (abfd), | |
4345 | (hdr->bfd_section == NULL | |
4346 | ? "*unknown*" | |
4347 | : hdr->bfd_section->name))); | |
4348 | if ((abfd->flags & D_PAGED) != 0) | |
340b6d91 AC |
4349 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4350 | bed->maxpagesize); | |
252b5132 | 4351 | else |
340b6d91 AC |
4352 | off += vma_page_aligned_bias (hdr->sh_addr, off, |
4353 | hdr->sh_addralign); | |
252b5132 | 4354 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
b34976b6 | 4355 | FALSE); |
252b5132 RH |
4356 | } |
4357 | else if (hdr->sh_type == SHT_REL | |
4358 | || hdr->sh_type == SHT_RELA | |
4359 | || hdr == i_shdrpp[tdata->symtab_section] | |
9ad5cbcf | 4360 | || hdr == i_shdrpp[tdata->symtab_shndx_section] |
252b5132 RH |
4361 | || hdr == i_shdrpp[tdata->strtab_section]) |
4362 | hdr->sh_offset = -1; | |
4363 | else | |
b34976b6 | 4364 | off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE); |
9ad5cbcf AM |
4365 | |
4366 | if (i == SHN_LORESERVE - 1) | |
4367 | { | |
4368 | i += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4369 | hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
4370 | } | |
252b5132 RH |
4371 | } |
4372 | } | |
4373 | ||
4374 | /* Place the section headers. */ | |
45d6a902 | 4375 | off = align_file_position (off, 1 << bed->s->log_file_align); |
252b5132 RH |
4376 | i_ehdrp->e_shoff = off; |
4377 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
4378 | ||
4379 | elf_tdata (abfd)->next_file_pos = off; | |
4380 | ||
b34976b6 | 4381 | return TRUE; |
252b5132 RH |
4382 | } |
4383 | ||
b34976b6 | 4384 | static bfd_boolean |
217aa764 | 4385 | prep_headers (bfd *abfd) |
252b5132 RH |
4386 | { |
4387 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
4388 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ | |
4389 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ | |
2b0f7ef9 | 4390 | struct elf_strtab_hash *shstrtab; |
9c5bfbb7 | 4391 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4392 | |
4393 | i_ehdrp = elf_elfheader (abfd); | |
4394 | i_shdrp = elf_elfsections (abfd); | |
4395 | ||
2b0f7ef9 | 4396 | shstrtab = _bfd_elf_strtab_init (); |
252b5132 | 4397 | if (shstrtab == NULL) |
b34976b6 | 4398 | return FALSE; |
252b5132 RH |
4399 | |
4400 | elf_shstrtab (abfd) = shstrtab; | |
4401 | ||
4402 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
4403 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
4404 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
4405 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
4406 | ||
4407 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
4408 | i_ehdrp->e_ident[EI_DATA] = | |
4409 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; | |
4410 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; | |
4411 | ||
252b5132 RH |
4412 | if ((abfd->flags & DYNAMIC) != 0) |
4413 | i_ehdrp->e_type = ET_DYN; | |
4414 | else if ((abfd->flags & EXEC_P) != 0) | |
4415 | i_ehdrp->e_type = ET_EXEC; | |
4416 | else if (bfd_get_format (abfd) == bfd_core) | |
4417 | i_ehdrp->e_type = ET_CORE; | |
4418 | else | |
4419 | i_ehdrp->e_type = ET_REL; | |
4420 | ||
4421 | switch (bfd_get_arch (abfd)) | |
4422 | { | |
4423 | case bfd_arch_unknown: | |
4424 | i_ehdrp->e_machine = EM_NONE; | |
4425 | break; | |
aa4f99bb AO |
4426 | |
4427 | /* There used to be a long list of cases here, each one setting | |
4428 | e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE | |
4429 | in the corresponding bfd definition. To avoid duplication, | |
4430 | the switch was removed. Machines that need special handling | |
4431 | can generally do it in elf_backend_final_write_processing(), | |
4432 | unless they need the information earlier than the final write. | |
4433 | Such need can generally be supplied by replacing the tests for | |
4434 | e_machine with the conditions used to determine it. */ | |
252b5132 | 4435 | default: |
9c5bfbb7 AM |
4436 | i_ehdrp->e_machine = bed->elf_machine_code; |
4437 | } | |
aa4f99bb | 4438 | |
252b5132 RH |
4439 | i_ehdrp->e_version = bed->s->ev_current; |
4440 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
4441 | ||
c044fabd | 4442 | /* No program header, for now. */ |
252b5132 RH |
4443 | i_ehdrp->e_phoff = 0; |
4444 | i_ehdrp->e_phentsize = 0; | |
4445 | i_ehdrp->e_phnum = 0; | |
4446 | ||
c044fabd | 4447 | /* Each bfd section is section header entry. */ |
252b5132 RH |
4448 | i_ehdrp->e_entry = bfd_get_start_address (abfd); |
4449 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
4450 | ||
c044fabd | 4451 | /* If we're building an executable, we'll need a program header table. */ |
252b5132 RH |
4452 | if (abfd->flags & EXEC_P) |
4453 | { | |
c044fabd | 4454 | /* It all happens later. */ |
252b5132 RH |
4455 | #if 0 |
4456 | i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr); | |
4457 | ||
4458 | /* elf_build_phdrs() returns a (NULL-terminated) array of | |
c044fabd | 4459 | Elf_Internal_Phdrs. */ |
252b5132 RH |
4460 | i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum); |
4461 | i_ehdrp->e_phoff = outbase; | |
4462 | outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum; | |
4463 | #endif | |
4464 | } | |
4465 | else | |
4466 | { | |
4467 | i_ehdrp->e_phentsize = 0; | |
4468 | i_phdrp = 0; | |
4469 | i_ehdrp->e_phoff = 0; | |
4470 | } | |
4471 | ||
4472 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
b34976b6 | 4473 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE); |
252b5132 | 4474 | elf_tdata (abfd)->strtab_hdr.sh_name = |
b34976b6 | 4475 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE); |
252b5132 | 4476 | elf_tdata (abfd)->shstrtab_hdr.sh_name = |
b34976b6 | 4477 | (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE); |
252b5132 RH |
4478 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 |
4479 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
4480 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
b34976b6 | 4481 | return FALSE; |
252b5132 | 4482 | |
b34976b6 | 4483 | return TRUE; |
252b5132 RH |
4484 | } |
4485 | ||
4486 | /* Assign file positions for all the reloc sections which are not part | |
4487 | of the loadable file image. */ | |
4488 | ||
4489 | void | |
217aa764 | 4490 | _bfd_elf_assign_file_positions_for_relocs (bfd *abfd) |
252b5132 RH |
4491 | { |
4492 | file_ptr off; | |
9ad5cbcf | 4493 | unsigned int i, num_sec; |
252b5132 RH |
4494 | Elf_Internal_Shdr **shdrpp; |
4495 | ||
4496 | off = elf_tdata (abfd)->next_file_pos; | |
4497 | ||
9ad5cbcf AM |
4498 | num_sec = elf_numsections (abfd); |
4499 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++) | |
252b5132 RH |
4500 | { |
4501 | Elf_Internal_Shdr *shdrp; | |
4502 | ||
4503 | shdrp = *shdrpp; | |
4504 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
4505 | && shdrp->sh_offset == -1) | |
b34976b6 | 4506 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE); |
252b5132 RH |
4507 | } |
4508 | ||
4509 | elf_tdata (abfd)->next_file_pos = off; | |
4510 | } | |
4511 | ||
b34976b6 | 4512 | bfd_boolean |
217aa764 | 4513 | _bfd_elf_write_object_contents (bfd *abfd) |
252b5132 | 4514 | { |
9c5bfbb7 | 4515 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 RH |
4516 | Elf_Internal_Ehdr *i_ehdrp; |
4517 | Elf_Internal_Shdr **i_shdrp; | |
b34976b6 | 4518 | bfd_boolean failed; |
9ad5cbcf | 4519 | unsigned int count, num_sec; |
252b5132 RH |
4520 | |
4521 | if (! abfd->output_has_begun | |
217aa764 | 4522 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 4523 | return FALSE; |
252b5132 RH |
4524 | |
4525 | i_shdrp = elf_elfsections (abfd); | |
4526 | i_ehdrp = elf_elfheader (abfd); | |
4527 | ||
b34976b6 | 4528 | failed = FALSE; |
252b5132 RH |
4529 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); |
4530 | if (failed) | |
b34976b6 | 4531 | return FALSE; |
252b5132 RH |
4532 | |
4533 | _bfd_elf_assign_file_positions_for_relocs (abfd); | |
4534 | ||
c044fabd | 4535 | /* After writing the headers, we need to write the sections too... */ |
9ad5cbcf AM |
4536 | num_sec = elf_numsections (abfd); |
4537 | for (count = 1; count < num_sec; count++) | |
252b5132 RH |
4538 | { |
4539 | if (bed->elf_backend_section_processing) | |
4540 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
4541 | if (i_shdrp[count]->contents) | |
4542 | { | |
dc810e39 AM |
4543 | bfd_size_type amt = i_shdrp[count]->sh_size; |
4544 | ||
252b5132 | 4545 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 |
dc810e39 | 4546 | || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt) |
b34976b6 | 4547 | return FALSE; |
252b5132 | 4548 | } |
9ad5cbcf AM |
4549 | if (count == SHN_LORESERVE - 1) |
4550 | count += SHN_HIRESERVE + 1 - SHN_LORESERVE; | |
252b5132 RH |
4551 | } |
4552 | ||
4553 | /* Write out the section header names. */ | |
4554 | if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
2b0f7ef9 | 4555 | || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))) |
b34976b6 | 4556 | return FALSE; |
252b5132 RH |
4557 | |
4558 | if (bed->elf_backend_final_write_processing) | |
4559 | (*bed->elf_backend_final_write_processing) (abfd, | |
4560 | elf_tdata (abfd)->linker); | |
4561 | ||
4562 | return bed->s->write_shdrs_and_ehdr (abfd); | |
4563 | } | |
4564 | ||
b34976b6 | 4565 | bfd_boolean |
217aa764 | 4566 | _bfd_elf_write_corefile_contents (bfd *abfd) |
252b5132 | 4567 | { |
c044fabd | 4568 | /* Hopefully this can be done just like an object file. */ |
252b5132 RH |
4569 | return _bfd_elf_write_object_contents (abfd); |
4570 | } | |
c044fabd KH |
4571 | |
4572 | /* Given a section, search the header to find them. */ | |
4573 | ||
252b5132 | 4574 | int |
198beae2 | 4575 | _bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) |
252b5132 | 4576 | { |
9c5bfbb7 | 4577 | const struct elf_backend_data *bed; |
252b5132 | 4578 | int index; |
252b5132 | 4579 | |
9ad5cbcf AM |
4580 | if (elf_section_data (asect) != NULL |
4581 | && elf_section_data (asect)->this_idx != 0) | |
4582 | return elf_section_data (asect)->this_idx; | |
4583 | ||
4584 | if (bfd_is_abs_section (asect)) | |
af746e92 AM |
4585 | index = SHN_ABS; |
4586 | else if (bfd_is_com_section (asect)) | |
4587 | index = SHN_COMMON; | |
4588 | else if (bfd_is_und_section (asect)) | |
4589 | index = SHN_UNDEF; | |
4590 | else | |
252b5132 | 4591 | { |
af746e92 AM |
4592 | Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd); |
4593 | int maxindex = elf_numsections (abfd); | |
4594 | ||
4595 | for (index = 1; index < maxindex; index++) | |
4596 | { | |
4597 | Elf_Internal_Shdr *hdr = i_shdrp[index]; | |
4598 | ||
4599 | if (hdr != NULL && hdr->bfd_section == asect) | |
4600 | return index; | |
4601 | } | |
4602 | index = -1; | |
252b5132 RH |
4603 | } |
4604 | ||
af746e92 | 4605 | bed = get_elf_backend_data (abfd); |
252b5132 RH |
4606 | if (bed->elf_backend_section_from_bfd_section) |
4607 | { | |
af746e92 | 4608 | int retval = index; |
9ad5cbcf | 4609 | |
af746e92 AM |
4610 | if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval)) |
4611 | return retval; | |
252b5132 RH |
4612 | } |
4613 | ||
af746e92 AM |
4614 | if (index == -1) |
4615 | bfd_set_error (bfd_error_nonrepresentable_section); | |
252b5132 | 4616 | |
af746e92 | 4617 | return index; |
252b5132 RH |
4618 | } |
4619 | ||
4620 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 | |
4621 | on error. */ | |
4622 | ||
4623 | int | |
217aa764 | 4624 | _bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) |
252b5132 RH |
4625 | { |
4626 | asymbol *asym_ptr = *asym_ptr_ptr; | |
4627 | int idx; | |
4628 | flagword flags = asym_ptr->flags; | |
4629 | ||
4630 | /* When gas creates relocations against local labels, it creates its | |
4631 | own symbol for the section, but does put the symbol into the | |
4632 | symbol chain, so udata is 0. When the linker is generating | |
4633 | relocatable output, this section symbol may be for one of the | |
4634 | input sections rather than the output section. */ | |
4635 | if (asym_ptr->udata.i == 0 | |
4636 | && (flags & BSF_SECTION_SYM) | |
4637 | && asym_ptr->section) | |
4638 | { | |
4639 | int indx; | |
4640 | ||
4641 | if (asym_ptr->section->output_section != NULL) | |
4642 | indx = asym_ptr->section->output_section->index; | |
4643 | else | |
4644 | indx = asym_ptr->section->index; | |
4e89ac30 L |
4645 | if (indx < elf_num_section_syms (abfd) |
4646 | && elf_section_syms (abfd)[indx] != NULL) | |
252b5132 RH |
4647 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; |
4648 | } | |
4649 | ||
4650 | idx = asym_ptr->udata.i; | |
4651 | ||
4652 | if (idx == 0) | |
4653 | { | |
4654 | /* This case can occur when using --strip-symbol on a symbol | |
4655 | which is used in a relocation entry. */ | |
4656 | (*_bfd_error_handler) | |
4657 | (_("%s: symbol `%s' required but not present"), | |
8f615d07 | 4658 | bfd_archive_filename (abfd), bfd_asymbol_name (asym_ptr)); |
252b5132 RH |
4659 | bfd_set_error (bfd_error_no_symbols); |
4660 | return -1; | |
4661 | } | |
4662 | ||
4663 | #if DEBUG & 4 | |
4664 | { | |
4665 | fprintf (stderr, | |
661a3fd4 | 4666 | "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", |
252b5132 RH |
4667 | (long) asym_ptr, asym_ptr->name, idx, flags, |
4668 | elf_symbol_flags (flags)); | |
4669 | fflush (stderr); | |
4670 | } | |
4671 | #endif | |
4672 | ||
4673 | return idx; | |
4674 | } | |
4675 | ||
4676 | /* Copy private BFD data. This copies any program header information. */ | |
4677 | ||
b34976b6 | 4678 | static bfd_boolean |
217aa764 | 4679 | copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 | 4680 | { |
b34976b6 AM |
4681 | Elf_Internal_Ehdr *iehdr; |
4682 | struct elf_segment_map *map; | |
4683 | struct elf_segment_map *map_first; | |
4684 | struct elf_segment_map **pointer_to_map; | |
4685 | Elf_Internal_Phdr *segment; | |
4686 | asection *section; | |
4687 | unsigned int i; | |
4688 | unsigned int num_segments; | |
4689 | bfd_boolean phdr_included = FALSE; | |
4690 | bfd_vma maxpagesize; | |
4691 | struct elf_segment_map *phdr_adjust_seg = NULL; | |
4692 | unsigned int phdr_adjust_num = 0; | |
9c5bfbb7 | 4693 | const struct elf_backend_data *bed; |
bc67d8a6 | 4694 | |
c044fabd | 4695 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 4696 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 4697 | return TRUE; |
252b5132 RH |
4698 | |
4699 | if (elf_tdata (ibfd)->phdr == NULL) | |
b34976b6 | 4700 | return TRUE; |
252b5132 | 4701 | |
caf47ea6 | 4702 | bed = get_elf_backend_data (ibfd); |
252b5132 RH |
4703 | iehdr = elf_elfheader (ibfd); |
4704 | ||
bc67d8a6 | 4705 | map_first = NULL; |
c044fabd | 4706 | pointer_to_map = &map_first; |
252b5132 RH |
4707 | |
4708 | num_segments = elf_elfheader (ibfd)->e_phnum; | |
bc67d8a6 NC |
4709 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; |
4710 | ||
4711 | /* Returns the end address of the segment + 1. */ | |
aecc8f8a AM |
4712 | #define SEGMENT_END(segment, start) \ |
4713 | (start + (segment->p_memsz > segment->p_filesz \ | |
4714 | ? segment->p_memsz : segment->p_filesz)) | |
bc67d8a6 | 4715 | |
eecdbe52 JJ |
4716 | #define SECTION_SIZE(section, segment) \ |
4717 | (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \ | |
4718 | != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \ | |
4719 | ? section->_raw_size : 0) | |
4720 | ||
b34976b6 | 4721 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4722 | the given segment. VMA addresses are compared. */ |
aecc8f8a AM |
4723 | #define IS_CONTAINED_BY_VMA(section, segment) \ |
4724 | (section->vma >= segment->p_vaddr \ | |
eecdbe52 | 4725 | && (section->vma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4726 | <= (SEGMENT_END (segment, segment->p_vaddr)))) |
c044fabd | 4727 | |
b34976b6 | 4728 | /* Returns TRUE if the given section is contained within |
bc67d8a6 | 4729 | the given segment. LMA addresses are compared. */ |
aecc8f8a AM |
4730 | #define IS_CONTAINED_BY_LMA(section, segment, base) \ |
4731 | (section->lma >= base \ | |
eecdbe52 | 4732 | && (section->lma + SECTION_SIZE (section, segment) \ |
aecc8f8a | 4733 | <= SEGMENT_END (segment, base))) |
252b5132 | 4734 | |
c044fabd | 4735 | /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */ |
aecc8f8a AM |
4736 | #define IS_COREFILE_NOTE(p, s) \ |
4737 | (p->p_type == PT_NOTE \ | |
4738 | && bfd_get_format (ibfd) == bfd_core \ | |
4739 | && s->vma == 0 && s->lma == 0 \ | |
4740 | && (bfd_vma) s->filepos >= p->p_offset \ | |
4741 | && ((bfd_vma) s->filepos + s->_raw_size \ | |
4742 | <= p->p_offset + p->p_filesz)) | |
252b5132 RH |
4743 | |
4744 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
4745 | linker, which generates a PT_INTERP section with p_vaddr and | |
4746 | p_memsz set to 0. */ | |
aecc8f8a AM |
4747 | #define IS_SOLARIS_PT_INTERP(p, s) \ |
4748 | (p->p_vaddr == 0 \ | |
4749 | && p->p_paddr == 0 \ | |
4750 | && p->p_memsz == 0 \ | |
4751 | && p->p_filesz > 0 \ | |
4752 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
4753 | && s->_raw_size > 0 \ | |
4754 | && (bfd_vma) s->filepos >= p->p_offset \ | |
4755 | && ((bfd_vma) s->filepos + s->_raw_size \ | |
4756 | <= p->p_offset + p->p_filesz)) | |
5c440b1e | 4757 | |
bc67d8a6 NC |
4758 | /* Decide if the given section should be included in the given segment. |
4759 | A section will be included if: | |
f5ffc919 NC |
4760 | 1. It is within the address space of the segment -- we use the LMA |
4761 | if that is set for the segment and the VMA otherwise, | |
bc67d8a6 NC |
4762 | 2. It is an allocated segment, |
4763 | 3. There is an output section associated with it, | |
eecdbe52 | 4764 | 4. The section has not already been allocated to a previous segment. |
03394ac9 NC |
4765 | 5. PT_GNU_STACK segments do not include any sections. |
4766 | 6. PT_TLS segment includes only SHF_TLS sections. | |
4767 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */ | |
caf47ea6 | 4768 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
aecc8f8a AM |
4769 | ((((segment->p_paddr \ |
4770 | ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \ | |
4771 | : IS_CONTAINED_BY_VMA (section, segment)) \ | |
f5ffc919 | 4772 | && (section->flags & SEC_ALLOC) != 0) \ |
b6821651 | 4773 | || IS_COREFILE_NOTE (segment, section)) \ |
f5ffc919 | 4774 | && section->output_section != NULL \ |
03394ac9 | 4775 | && segment->p_type != PT_GNU_STACK \ |
eecdbe52 JJ |
4776 | && (segment->p_type != PT_TLS \ |
4777 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
4778 | && (segment->p_type == PT_LOAD \ | |
4779 | || segment->p_type == PT_TLS \ | |
4780 | || (section->flags & SEC_THREAD_LOCAL) == 0) \ | |
82e51918 | 4781 | && ! section->segment_mark) |
bc67d8a6 | 4782 | |
b34976b6 | 4783 | /* Returns TRUE iff seg1 starts after the end of seg2. */ |
b5f852ea NC |
4784 | #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \ |
4785 | (seg1->field >= SEGMENT_END (seg2, seg2->field)) | |
4786 | ||
4787 | /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both | |
4788 | their VMA address ranges and their LMA address ranges overlap. | |
4789 | It is possible to have overlapping VMA ranges without overlapping LMA | |
4790 | ranges. RedBoot images for example can have both .data and .bss mapped | |
4791 | to the same VMA range, but with the .data section mapped to a different | |
4792 | LMA. */ | |
aecc8f8a | 4793 | #define SEGMENT_OVERLAPS(seg1, seg2) \ |
b5f852ea NC |
4794 | ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \ |
4795 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \ | |
4796 | && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \ | |
4797 | || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr))) | |
bc67d8a6 NC |
4798 | |
4799 | /* Initialise the segment mark field. */ | |
4800 | for (section = ibfd->sections; section != NULL; section = section->next) | |
b34976b6 | 4801 | section->segment_mark = FALSE; |
bc67d8a6 | 4802 | |
252b5132 | 4803 | /* Scan through the segments specified in the program header |
bc67d8a6 | 4804 | of the input BFD. For this first scan we look for overlaps |
9ad5cbcf | 4805 | in the loadable segments. These can be created by weird |
aecc8f8a | 4806 | parameters to objcopy. Also, fix some solaris weirdness. */ |
bc67d8a6 NC |
4807 | for (i = 0, segment = elf_tdata (ibfd)->phdr; |
4808 | i < num_segments; | |
c044fabd | 4809 | i++, segment++) |
252b5132 | 4810 | { |
252b5132 | 4811 | unsigned int j; |
c044fabd | 4812 | Elf_Internal_Phdr *segment2; |
252b5132 | 4813 | |
aecc8f8a AM |
4814 | if (segment->p_type == PT_INTERP) |
4815 | for (section = ibfd->sections; section; section = section->next) | |
4816 | if (IS_SOLARIS_PT_INTERP (segment, section)) | |
4817 | { | |
4818 | /* Mininal change so that the normal section to segment | |
4cc11e76 | 4819 | assignment code will work. */ |
aecc8f8a AM |
4820 | segment->p_vaddr = section->vma; |
4821 | break; | |
4822 | } | |
4823 | ||
bc67d8a6 NC |
4824 | if (segment->p_type != PT_LOAD) |
4825 | continue; | |
c044fabd | 4826 | |
bc67d8a6 | 4827 | /* Determine if this segment overlaps any previous segments. */ |
c044fabd | 4828 | for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++) |
bc67d8a6 NC |
4829 | { |
4830 | bfd_signed_vma extra_length; | |
c044fabd | 4831 | |
bc67d8a6 NC |
4832 | if (segment2->p_type != PT_LOAD |
4833 | || ! SEGMENT_OVERLAPS (segment, segment2)) | |
4834 | continue; | |
c044fabd | 4835 | |
bc67d8a6 NC |
4836 | /* Merge the two segments together. */ |
4837 | if (segment2->p_vaddr < segment->p_vaddr) | |
4838 | { | |
c044fabd KH |
4839 | /* Extend SEGMENT2 to include SEGMENT and then delete |
4840 | SEGMENT. */ | |
bc67d8a6 NC |
4841 | extra_length = |
4842 | SEGMENT_END (segment, segment->p_vaddr) | |
4843 | - SEGMENT_END (segment2, segment2->p_vaddr); | |
c044fabd | 4844 | |
bc67d8a6 NC |
4845 | if (extra_length > 0) |
4846 | { | |
4847 | segment2->p_memsz += extra_length; | |
4848 | segment2->p_filesz += extra_length; | |
4849 | } | |
c044fabd | 4850 | |
bc67d8a6 | 4851 | segment->p_type = PT_NULL; |
c044fabd | 4852 | |
bc67d8a6 NC |
4853 | /* Since we have deleted P we must restart the outer loop. */ |
4854 | i = 0; | |
4855 | segment = elf_tdata (ibfd)->phdr; | |
4856 | break; | |
4857 | } | |
4858 | else | |
4859 | { | |
c044fabd KH |
4860 | /* Extend SEGMENT to include SEGMENT2 and then delete |
4861 | SEGMENT2. */ | |
bc67d8a6 NC |
4862 | extra_length = |
4863 | SEGMENT_END (segment2, segment2->p_vaddr) | |
4864 | - SEGMENT_END (segment, segment->p_vaddr); | |
c044fabd | 4865 | |
bc67d8a6 NC |
4866 | if (extra_length > 0) |
4867 | { | |
4868 | segment->p_memsz += extra_length; | |
4869 | segment->p_filesz += extra_length; | |
4870 | } | |
c044fabd | 4871 | |
bc67d8a6 NC |
4872 | segment2->p_type = PT_NULL; |
4873 | } | |
4874 | } | |
4875 | } | |
c044fabd | 4876 | |
bc67d8a6 NC |
4877 | /* The second scan attempts to assign sections to segments. */ |
4878 | for (i = 0, segment = elf_tdata (ibfd)->phdr; | |
4879 | i < num_segments; | |
4880 | i ++, segment ++) | |
4881 | { | |
4882 | unsigned int section_count; | |
4883 | asection ** sections; | |
4884 | asection * output_section; | |
4885 | unsigned int isec; | |
4886 | bfd_vma matching_lma; | |
4887 | bfd_vma suggested_lma; | |
4888 | unsigned int j; | |
dc810e39 | 4889 | bfd_size_type amt; |
bc67d8a6 NC |
4890 | |
4891 | if (segment->p_type == PT_NULL) | |
4892 | continue; | |
c044fabd | 4893 | |
bc67d8a6 | 4894 | /* Compute how many sections might be placed into this segment. */ |
b5f852ea NC |
4895 | for (section = ibfd->sections, section_count = 0; |
4896 | section != NULL; | |
4897 | section = section->next) | |
caf47ea6 | 4898 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c044fabd | 4899 | ++section_count; |
811072d8 | 4900 | |
b5f852ea NC |
4901 | /* Allocate a segment map big enough to contain |
4902 | all of the sections we have selected. */ | |
dc810e39 AM |
4903 | amt = sizeof (struct elf_segment_map); |
4904 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 4905 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 4906 | if (map == NULL) |
b34976b6 | 4907 | return FALSE; |
252b5132 RH |
4908 | |
4909 | /* Initialise the fields of the segment map. Default to | |
4910 | using the physical address of the segment in the input BFD. */ | |
bc67d8a6 NC |
4911 | map->next = NULL; |
4912 | map->p_type = segment->p_type; | |
4913 | map->p_flags = segment->p_flags; | |
4914 | map->p_flags_valid = 1; | |
4915 | map->p_paddr = segment->p_paddr; | |
4916 | map->p_paddr_valid = 1; | |
252b5132 RH |
4917 | |
4918 | /* Determine if this segment contains the ELF file header | |
4919 | and if it contains the program headers themselves. */ | |
bc67d8a6 NC |
4920 | map->includes_filehdr = (segment->p_offset == 0 |
4921 | && segment->p_filesz >= iehdr->e_ehsize); | |
252b5132 | 4922 | |
bc67d8a6 | 4923 | map->includes_phdrs = 0; |
252b5132 | 4924 | |
bc67d8a6 | 4925 | if (! phdr_included || segment->p_type != PT_LOAD) |
252b5132 | 4926 | { |
bc67d8a6 NC |
4927 | map->includes_phdrs = |
4928 | (segment->p_offset <= (bfd_vma) iehdr->e_phoff | |
4929 | && (segment->p_offset + segment->p_filesz | |
252b5132 RH |
4930 | >= ((bfd_vma) iehdr->e_phoff |
4931 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
c044fabd | 4932 | |
bc67d8a6 | 4933 | if (segment->p_type == PT_LOAD && map->includes_phdrs) |
b34976b6 | 4934 | phdr_included = TRUE; |
252b5132 RH |
4935 | } |
4936 | ||
bc67d8a6 | 4937 | if (section_count == 0) |
252b5132 RH |
4938 | { |
4939 | /* Special segments, such as the PT_PHDR segment, may contain | |
4940 | no sections, but ordinary, loadable segments should contain | |
1ed89aa9 NC |
4941 | something. They are allowed by the ELF spec however, so only |
4942 | a warning is produced. */ | |
bc67d8a6 | 4943 | if (segment->p_type == PT_LOAD) |
caf47ea6 | 4944 | (*_bfd_error_handler) |
1ed89aa9 | 4945 | (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"), |
caf47ea6 | 4946 | bfd_archive_filename (ibfd)); |
252b5132 | 4947 | |
bc67d8a6 | 4948 | map->count = 0; |
c044fabd KH |
4949 | *pointer_to_map = map; |
4950 | pointer_to_map = &map->next; | |
252b5132 RH |
4951 | |
4952 | continue; | |
4953 | } | |
4954 | ||
4955 | /* Now scan the sections in the input BFD again and attempt | |
4956 | to add their corresponding output sections to the segment map. | |
4957 | The problem here is how to handle an output section which has | |
4958 | been moved (ie had its LMA changed). There are four possibilities: | |
4959 | ||
4960 | 1. None of the sections have been moved. | |
4961 | In this case we can continue to use the segment LMA from the | |
4962 | input BFD. | |
4963 | ||
4964 | 2. All of the sections have been moved by the same amount. | |
4965 | In this case we can change the segment's LMA to match the LMA | |
4966 | of the first section. | |
4967 | ||
4968 | 3. Some of the sections have been moved, others have not. | |
4969 | In this case those sections which have not been moved can be | |
4970 | placed in the current segment which will have to have its size, | |
4971 | and possibly its LMA changed, and a new segment or segments will | |
4972 | have to be created to contain the other sections. | |
4973 | ||
b5f852ea | 4974 | 4. The sections have been moved, but not by the same amount. |
252b5132 RH |
4975 | In this case we can change the segment's LMA to match the LMA |
4976 | of the first section and we will have to create a new segment | |
4977 | or segments to contain the other sections. | |
4978 | ||
4979 | In order to save time, we allocate an array to hold the section | |
4980 | pointers that we are interested in. As these sections get assigned | |
4981 | to a segment, they are removed from this array. */ | |
4982 | ||
0b14c2aa L |
4983 | /* Gcc 2.96 miscompiles this code on mips. Don't do casting here |
4984 | to work around this long long bug. */ | |
4985 | amt = section_count * sizeof (asection *); | |
217aa764 | 4986 | sections = bfd_malloc (amt); |
252b5132 | 4987 | if (sections == NULL) |
b34976b6 | 4988 | return FALSE; |
252b5132 RH |
4989 | |
4990 | /* Step One: Scan for segment vs section LMA conflicts. | |
4991 | Also add the sections to the section array allocated above. | |
4992 | Also add the sections to the current segment. In the common | |
4993 | case, where the sections have not been moved, this means that | |
4994 | we have completely filled the segment, and there is nothing | |
4995 | more to do. */ | |
252b5132 | 4996 | isec = 0; |
72730e0c | 4997 | matching_lma = 0; |
252b5132 RH |
4998 | suggested_lma = 0; |
4999 | ||
bc67d8a6 NC |
5000 | for (j = 0, section = ibfd->sections; |
5001 | section != NULL; | |
5002 | section = section->next) | |
252b5132 | 5003 | { |
caf47ea6 | 5004 | if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed)) |
c0f7859b | 5005 | { |
bc67d8a6 NC |
5006 | output_section = section->output_section; |
5007 | ||
5008 | sections[j ++] = section; | |
252b5132 RH |
5009 | |
5010 | /* The Solaris native linker always sets p_paddr to 0. | |
5011 | We try to catch that case here, and set it to the | |
5e8d7549 NC |
5012 | correct value. Note - some backends require that |
5013 | p_paddr be left as zero. */ | |
bc67d8a6 | 5014 | if (segment->p_paddr == 0 |
4455705d | 5015 | && segment->p_vaddr != 0 |
5e8d7549 | 5016 | && (! bed->want_p_paddr_set_to_zero) |
252b5132 | 5017 | && isec == 0 |
bc67d8a6 NC |
5018 | && output_section->lma != 0 |
5019 | && (output_section->vma == (segment->p_vaddr | |
5020 | + (map->includes_filehdr | |
5021 | ? iehdr->e_ehsize | |
5022 | : 0) | |
5023 | + (map->includes_phdrs | |
079e9a2f AM |
5024 | ? (iehdr->e_phnum |
5025 | * iehdr->e_phentsize) | |
bc67d8a6 NC |
5026 | : 0)))) |
5027 | map->p_paddr = segment->p_vaddr; | |
252b5132 RH |
5028 | |
5029 | /* Match up the physical address of the segment with the | |
5030 | LMA address of the output section. */ | |
bc67d8a6 | 5031 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5e8d7549 NC |
5032 | || IS_COREFILE_NOTE (segment, section) |
5033 | || (bed->want_p_paddr_set_to_zero && | |
5034 | IS_CONTAINED_BY_VMA (output_section, segment)) | |
5035 | ) | |
252b5132 RH |
5036 | { |
5037 | if (matching_lma == 0) | |
bc67d8a6 | 5038 | matching_lma = output_section->lma; |
252b5132 RH |
5039 | |
5040 | /* We assume that if the section fits within the segment | |
bc67d8a6 | 5041 | then it does not overlap any other section within that |
252b5132 | 5042 | segment. */ |
bc67d8a6 | 5043 | map->sections[isec ++] = output_section; |
252b5132 RH |
5044 | } |
5045 | else if (suggested_lma == 0) | |
bc67d8a6 | 5046 | suggested_lma = output_section->lma; |
252b5132 RH |
5047 | } |
5048 | } | |
5049 | ||
bc67d8a6 | 5050 | BFD_ASSERT (j == section_count); |
252b5132 RH |
5051 | |
5052 | /* Step Two: Adjust the physical address of the current segment, | |
5053 | if necessary. */ | |
bc67d8a6 | 5054 | if (isec == section_count) |
252b5132 RH |
5055 | { |
5056 | /* All of the sections fitted within the segment as currently | |
5057 | specified. This is the default case. Add the segment to | |
5058 | the list of built segments and carry on to process the next | |
5059 | program header in the input BFD. */ | |
bc67d8a6 | 5060 | map->count = section_count; |
c044fabd KH |
5061 | *pointer_to_map = map; |
5062 | pointer_to_map = &map->next; | |
252b5132 RH |
5063 | |
5064 | free (sections); | |
5065 | continue; | |
5066 | } | |
252b5132 RH |
5067 | else |
5068 | { | |
72730e0c AM |
5069 | if (matching_lma != 0) |
5070 | { | |
5071 | /* At least one section fits inside the current segment. | |
5072 | Keep it, but modify its physical address to match the | |
5073 | LMA of the first section that fitted. */ | |
bc67d8a6 | 5074 | map->p_paddr = matching_lma; |
72730e0c AM |
5075 | } |
5076 | else | |
5077 | { | |
5078 | /* None of the sections fitted inside the current segment. | |
5079 | Change the current segment's physical address to match | |
5080 | the LMA of the first section. */ | |
bc67d8a6 | 5081 | map->p_paddr = suggested_lma; |
72730e0c AM |
5082 | } |
5083 | ||
bc67d8a6 NC |
5084 | /* Offset the segment physical address from the lma |
5085 | to allow for space taken up by elf headers. */ | |
5086 | if (map->includes_filehdr) | |
5087 | map->p_paddr -= iehdr->e_ehsize; | |
252b5132 | 5088 | |
bc67d8a6 NC |
5089 | if (map->includes_phdrs) |
5090 | { | |
5091 | map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize; | |
5092 | ||
5093 | /* iehdr->e_phnum is just an estimate of the number | |
5094 | of program headers that we will need. Make a note | |
5095 | here of the number we used and the segment we chose | |
5096 | to hold these headers, so that we can adjust the | |
5097 | offset when we know the correct value. */ | |
5098 | phdr_adjust_num = iehdr->e_phnum; | |
5099 | phdr_adjust_seg = map; | |
5100 | } | |
252b5132 RH |
5101 | } |
5102 | ||
5103 | /* Step Three: Loop over the sections again, this time assigning | |
caf47ea6 | 5104 | those that fit to the current segment and removing them from the |
252b5132 RH |
5105 | sections array; but making sure not to leave large gaps. Once all |
5106 | possible sections have been assigned to the current segment it is | |
5107 | added to the list of built segments and if sections still remain | |
5108 | to be assigned, a new segment is constructed before repeating | |
5109 | the loop. */ | |
5110 | isec = 0; | |
5111 | do | |
5112 | { | |
bc67d8a6 | 5113 | map->count = 0; |
252b5132 RH |
5114 | suggested_lma = 0; |
5115 | ||
5116 | /* Fill the current segment with sections that fit. */ | |
bc67d8a6 | 5117 | for (j = 0; j < section_count; j++) |
252b5132 | 5118 | { |
bc67d8a6 | 5119 | section = sections[j]; |
252b5132 | 5120 | |
bc67d8a6 | 5121 | if (section == NULL) |
252b5132 RH |
5122 | continue; |
5123 | ||
bc67d8a6 | 5124 | output_section = section->output_section; |
252b5132 | 5125 | |
bc67d8a6 | 5126 | BFD_ASSERT (output_section != NULL); |
c044fabd | 5127 | |
bc67d8a6 NC |
5128 | if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr) |
5129 | || IS_COREFILE_NOTE (segment, section)) | |
252b5132 | 5130 | { |
bc67d8a6 | 5131 | if (map->count == 0) |
252b5132 RH |
5132 | { |
5133 | /* If the first section in a segment does not start at | |
bc67d8a6 NC |
5134 | the beginning of the segment, then something is |
5135 | wrong. */ | |
5136 | if (output_section->lma != | |
5137 | (map->p_paddr | |
5138 | + (map->includes_filehdr ? iehdr->e_ehsize : 0) | |
5139 | + (map->includes_phdrs | |
5140 | ? iehdr->e_phnum * iehdr->e_phentsize | |
5141 | : 0))) | |
252b5132 RH |
5142 | abort (); |
5143 | } | |
5144 | else | |
5145 | { | |
5146 | asection * prev_sec; | |
252b5132 | 5147 | |
bc67d8a6 | 5148 | prev_sec = map->sections[map->count - 1]; |
252b5132 RH |
5149 | |
5150 | /* If the gap between the end of the previous section | |
bc67d8a6 NC |
5151 | and the start of this section is more than |
5152 | maxpagesize then we need to start a new segment. */ | |
079e9a2f AM |
5153 | if ((BFD_ALIGN (prev_sec->lma + prev_sec->_raw_size, |
5154 | maxpagesize) | |
caf47ea6 | 5155 | < BFD_ALIGN (output_section->lma, maxpagesize)) |
079e9a2f AM |
5156 | || ((prev_sec->lma + prev_sec->_raw_size) |
5157 | > output_section->lma)) | |
252b5132 RH |
5158 | { |
5159 | if (suggested_lma == 0) | |
bc67d8a6 | 5160 | suggested_lma = output_section->lma; |
252b5132 RH |
5161 | |
5162 | continue; | |
5163 | } | |
5164 | } | |
5165 | ||
bc67d8a6 | 5166 | map->sections[map->count++] = output_section; |
252b5132 RH |
5167 | ++isec; |
5168 | sections[j] = NULL; | |
b34976b6 | 5169 | section->segment_mark = TRUE; |
252b5132 RH |
5170 | } |
5171 | else if (suggested_lma == 0) | |
bc67d8a6 | 5172 | suggested_lma = output_section->lma; |
252b5132 RH |
5173 | } |
5174 | ||
bc67d8a6 | 5175 | BFD_ASSERT (map->count > 0); |
252b5132 RH |
5176 | |
5177 | /* Add the current segment to the list of built segments. */ | |
c044fabd KH |
5178 | *pointer_to_map = map; |
5179 | pointer_to_map = &map->next; | |
252b5132 | 5180 | |
bc67d8a6 | 5181 | if (isec < section_count) |
252b5132 RH |
5182 | { |
5183 | /* We still have not allocated all of the sections to | |
5184 | segments. Create a new segment here, initialise it | |
5185 | and carry on looping. */ | |
dc810e39 AM |
5186 | amt = sizeof (struct elf_segment_map); |
5187 | amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); | |
217aa764 | 5188 | map = bfd_alloc (obfd, amt); |
bc67d8a6 | 5189 | if (map == NULL) |
5ed6aba4 NC |
5190 | { |
5191 | free (sections); | |
5192 | return FALSE; | |
5193 | } | |
252b5132 RH |
5194 | |
5195 | /* Initialise the fields of the segment map. Set the physical | |
5196 | physical address to the LMA of the first section that has | |
5197 | not yet been assigned. */ | |
bc67d8a6 NC |
5198 | map->next = NULL; |
5199 | map->p_type = segment->p_type; | |
5200 | map->p_flags = segment->p_flags; | |
5201 | map->p_flags_valid = 1; | |
5202 | map->p_paddr = suggested_lma; | |
5203 | map->p_paddr_valid = 1; | |
5204 | map->includes_filehdr = 0; | |
5205 | map->includes_phdrs = 0; | |
252b5132 RH |
5206 | } |
5207 | } | |
bc67d8a6 | 5208 | while (isec < section_count); |
252b5132 RH |
5209 | |
5210 | free (sections); | |
5211 | } | |
5212 | ||
5213 | /* The Solaris linker creates program headers in which all the | |
5214 | p_paddr fields are zero. When we try to objcopy or strip such a | |
5215 | file, we get confused. Check for this case, and if we find it | |
5216 | reset the p_paddr_valid fields. */ | |
bc67d8a6 NC |
5217 | for (map = map_first; map != NULL; map = map->next) |
5218 | if (map->p_paddr != 0) | |
252b5132 | 5219 | break; |
bc67d8a6 | 5220 | if (map == NULL) |
b5f852ea NC |
5221 | for (map = map_first; map != NULL; map = map->next) |
5222 | map->p_paddr_valid = 0; | |
252b5132 | 5223 | |
bc67d8a6 NC |
5224 | elf_tdata (obfd)->segment_map = map_first; |
5225 | ||
5226 | /* If we had to estimate the number of program headers that were | |
9ad5cbcf | 5227 | going to be needed, then check our estimate now and adjust |
bc67d8a6 NC |
5228 | the offset if necessary. */ |
5229 | if (phdr_adjust_seg != NULL) | |
5230 | { | |
5231 | unsigned int count; | |
c044fabd | 5232 | |
bc67d8a6 | 5233 | for (count = 0, map = map_first; map != NULL; map = map->next) |
c044fabd | 5234 | count++; |
252b5132 | 5235 | |
bc67d8a6 NC |
5236 | if (count > phdr_adjust_num) |
5237 | phdr_adjust_seg->p_paddr | |
5238 | -= (count - phdr_adjust_num) * iehdr->e_phentsize; | |
5239 | } | |
c044fabd | 5240 | |
252b5132 | 5241 | #if 0 |
c044fabd KH |
5242 | /* Final Step: Sort the segments into ascending order of physical |
5243 | address. */ | |
bc67d8a6 | 5244 | if (map_first != NULL) |
252b5132 | 5245 | { |
c044fabd | 5246 | struct elf_segment_map *prev; |
252b5132 | 5247 | |
bc67d8a6 NC |
5248 | prev = map_first; |
5249 | for (map = map_first->next; map != NULL; prev = map, map = map->next) | |
252b5132 | 5250 | { |
bc67d8a6 NC |
5251 | /* Yes I know - its a bubble sort.... */ |
5252 | if (map->next != NULL && (map->next->p_paddr < map->p_paddr)) | |
252b5132 | 5253 | { |
bc67d8a6 NC |
5254 | /* Swap map and map->next. */ |
5255 | prev->next = map->next; | |
5256 | map->next = map->next->next; | |
5257 | prev->next->next = map; | |
252b5132 | 5258 | |
bc67d8a6 NC |
5259 | /* Restart loop. */ |
5260 | map = map_first; | |
252b5132 RH |
5261 | } |
5262 | } | |
5263 | } | |
5264 | #endif | |
5265 | ||
bc67d8a6 | 5266 | #undef SEGMENT_END |
eecdbe52 | 5267 | #undef SECTION_SIZE |
bc67d8a6 NC |
5268 | #undef IS_CONTAINED_BY_VMA |
5269 | #undef IS_CONTAINED_BY_LMA | |
252b5132 | 5270 | #undef IS_COREFILE_NOTE |
bc67d8a6 NC |
5271 | #undef IS_SOLARIS_PT_INTERP |
5272 | #undef INCLUDE_SECTION_IN_SEGMENT | |
5273 | #undef SEGMENT_AFTER_SEGMENT | |
5274 | #undef SEGMENT_OVERLAPS | |
b34976b6 | 5275 | return TRUE; |
252b5132 RH |
5276 | } |
5277 | ||
5278 | /* Copy private section information. This copies over the entsize | |
5279 | field, and sometimes the info field. */ | |
5280 | ||
b34976b6 | 5281 | bfd_boolean |
217aa764 AM |
5282 | _bfd_elf_copy_private_section_data (bfd *ibfd, |
5283 | asection *isec, | |
5284 | bfd *obfd, | |
5285 | asection *osec) | |
252b5132 RH |
5286 | { |
5287 | Elf_Internal_Shdr *ihdr, *ohdr; | |
5288 | ||
5289 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
5290 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
b34976b6 | 5291 | return TRUE; |
252b5132 | 5292 | |
252b5132 RH |
5293 | ihdr = &elf_section_data (isec)->this_hdr; |
5294 | ohdr = &elf_section_data (osec)->this_hdr; | |
5295 | ||
5296 | ohdr->sh_entsize = ihdr->sh_entsize; | |
5297 | ||
5298 | if (ihdr->sh_type == SHT_SYMTAB | |
5299 | || ihdr->sh_type == SHT_DYNSYM | |
5300 | || ihdr->sh_type == SHT_GNU_verneed | |
5301 | || ihdr->sh_type == SHT_GNU_verdef) | |
5302 | ohdr->sh_info = ihdr->sh_info; | |
5303 | ||
9dce4196 AM |
5304 | /* Set things up for objcopy. The output SHT_GROUP section will |
5305 | have its elf_next_in_group pointing back to the input group | |
5306 | members. */ | |
5307 | elf_next_in_group (osec) = elf_next_in_group (isec); | |
5308 | elf_group_name (osec) = elf_group_name (isec); | |
5309 | ||
68bfbfcc | 5310 | osec->use_rela_p = isec->use_rela_p; |
bf572ba0 | 5311 | |
b34976b6 | 5312 | return TRUE; |
252b5132 RH |
5313 | } |
5314 | ||
80fccad2 BW |
5315 | /* Copy private header information. */ |
5316 | ||
5317 | bfd_boolean | |
5318 | _bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) | |
5319 | { | |
5320 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5321 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5322 | return TRUE; | |
5323 | ||
5324 | /* Copy over private BFD data if it has not already been copied. | |
5325 | This must be done here, rather than in the copy_private_bfd_data | |
5326 | entry point, because the latter is called after the section | |
5327 | contents have been set, which means that the program headers have | |
5328 | already been worked out. */ | |
5329 | if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL) | |
5330 | { | |
5331 | if (! copy_private_bfd_data (ibfd, obfd)) | |
5332 | return FALSE; | |
5333 | } | |
5334 | ||
5335 | return TRUE; | |
5336 | } | |
5337 | ||
252b5132 RH |
5338 | /* Copy private symbol information. If this symbol is in a section |
5339 | which we did not map into a BFD section, try to map the section | |
5340 | index correctly. We use special macro definitions for the mapped | |
5341 | section indices; these definitions are interpreted by the | |
5342 | swap_out_syms function. */ | |
5343 | ||
9ad5cbcf AM |
5344 | #define MAP_ONESYMTAB (SHN_HIOS + 1) |
5345 | #define MAP_DYNSYMTAB (SHN_HIOS + 2) | |
5346 | #define MAP_STRTAB (SHN_HIOS + 3) | |
5347 | #define MAP_SHSTRTAB (SHN_HIOS + 4) | |
5348 | #define MAP_SYM_SHNDX (SHN_HIOS + 5) | |
252b5132 | 5349 | |
b34976b6 | 5350 | bfd_boolean |
217aa764 AM |
5351 | _bfd_elf_copy_private_symbol_data (bfd *ibfd, |
5352 | asymbol *isymarg, | |
5353 | bfd *obfd, | |
5354 | asymbol *osymarg) | |
252b5132 RH |
5355 | { |
5356 | elf_symbol_type *isym, *osym; | |
5357 | ||
5358 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5359 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5360 | return TRUE; |
252b5132 RH |
5361 | |
5362 | isym = elf_symbol_from (ibfd, isymarg); | |
5363 | osym = elf_symbol_from (obfd, osymarg); | |
5364 | ||
5365 | if (isym != NULL | |
5366 | && osym != NULL | |
5367 | && bfd_is_abs_section (isym->symbol.section)) | |
5368 | { | |
5369 | unsigned int shndx; | |
5370 | ||
5371 | shndx = isym->internal_elf_sym.st_shndx; | |
5372 | if (shndx == elf_onesymtab (ibfd)) | |
5373 | shndx = MAP_ONESYMTAB; | |
5374 | else if (shndx == elf_dynsymtab (ibfd)) | |
5375 | shndx = MAP_DYNSYMTAB; | |
5376 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
5377 | shndx = MAP_STRTAB; | |
5378 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
5379 | shndx = MAP_SHSTRTAB; | |
9ad5cbcf AM |
5380 | else if (shndx == elf_tdata (ibfd)->symtab_shndx_section) |
5381 | shndx = MAP_SYM_SHNDX; | |
252b5132 RH |
5382 | osym->internal_elf_sym.st_shndx = shndx; |
5383 | } | |
5384 | ||
b34976b6 | 5385 | return TRUE; |
252b5132 RH |
5386 | } |
5387 | ||
5388 | /* Swap out the symbols. */ | |
5389 | ||
b34976b6 | 5390 | static bfd_boolean |
217aa764 AM |
5391 | swap_out_syms (bfd *abfd, |
5392 | struct bfd_strtab_hash **sttp, | |
5393 | int relocatable_p) | |
252b5132 | 5394 | { |
9c5bfbb7 | 5395 | const struct elf_backend_data *bed; |
079e9a2f AM |
5396 | int symcount; |
5397 | asymbol **syms; | |
5398 | struct bfd_strtab_hash *stt; | |
5399 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 5400 | Elf_Internal_Shdr *symtab_shndx_hdr; |
079e9a2f AM |
5401 | Elf_Internal_Shdr *symstrtab_hdr; |
5402 | char *outbound_syms; | |
9ad5cbcf | 5403 | char *outbound_shndx; |
079e9a2f AM |
5404 | int idx; |
5405 | bfd_size_type amt; | |
174fd7f9 | 5406 | bfd_boolean name_local_sections; |
252b5132 RH |
5407 | |
5408 | if (!elf_map_symbols (abfd)) | |
b34976b6 | 5409 | return FALSE; |
252b5132 | 5410 | |
c044fabd | 5411 | /* Dump out the symtabs. */ |
079e9a2f AM |
5412 | stt = _bfd_elf_stringtab_init (); |
5413 | if (stt == NULL) | |
b34976b6 | 5414 | return FALSE; |
252b5132 | 5415 | |
079e9a2f AM |
5416 | bed = get_elf_backend_data (abfd); |
5417 | symcount = bfd_get_symcount (abfd); | |
5418 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5419 | symtab_hdr->sh_type = SHT_SYMTAB; | |
5420 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
5421 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
5422 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
45d6a902 | 5423 | symtab_hdr->sh_addralign = 1 << bed->s->log_file_align; |
079e9a2f AM |
5424 | |
5425 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
5426 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
5427 | ||
5428 | amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; | |
5429 | outbound_syms = bfd_alloc (abfd, amt); | |
5430 | if (outbound_syms == NULL) | |
5ed6aba4 NC |
5431 | { |
5432 | _bfd_stringtab_free (stt); | |
5433 | return FALSE; | |
5434 | } | |
217aa764 | 5435 | symtab_hdr->contents = outbound_syms; |
252b5132 | 5436 | |
9ad5cbcf AM |
5437 | outbound_shndx = NULL; |
5438 | symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
5439 | if (symtab_shndx_hdr->sh_name != 0) | |
5440 | { | |
5441 | amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx); | |
1126897b | 5442 | outbound_shndx = bfd_zalloc (abfd, amt); |
9ad5cbcf | 5443 | if (outbound_shndx == NULL) |
5ed6aba4 NC |
5444 | { |
5445 | _bfd_stringtab_free (stt); | |
5446 | return FALSE; | |
5447 | } | |
5448 | ||
9ad5cbcf AM |
5449 | symtab_shndx_hdr->contents = outbound_shndx; |
5450 | symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; | |
5451 | symtab_shndx_hdr->sh_size = amt; | |
5452 | symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); | |
5453 | symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx); | |
5454 | } | |
5455 | ||
589e6347 | 5456 | /* Now generate the data (for "contents"). */ |
079e9a2f AM |
5457 | { |
5458 | /* Fill in zeroth symbol and swap it out. */ | |
5459 | Elf_Internal_Sym sym; | |
5460 | sym.st_name = 0; | |
5461 | sym.st_value = 0; | |
5462 | sym.st_size = 0; | |
5463 | sym.st_info = 0; | |
5464 | sym.st_other = 0; | |
5465 | sym.st_shndx = SHN_UNDEF; | |
9ad5cbcf | 5466 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5467 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5468 | if (outbound_shndx != NULL) |
5469 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5470 | } |
252b5132 | 5471 | |
174fd7f9 RS |
5472 | name_local_sections |
5473 | = (bed->elf_backend_name_local_section_symbols | |
5474 | && bed->elf_backend_name_local_section_symbols (abfd)); | |
5475 | ||
079e9a2f AM |
5476 | syms = bfd_get_outsymbols (abfd); |
5477 | for (idx = 0; idx < symcount; idx++) | |
252b5132 | 5478 | { |
252b5132 | 5479 | Elf_Internal_Sym sym; |
079e9a2f AM |
5480 | bfd_vma value = syms[idx]->value; |
5481 | elf_symbol_type *type_ptr; | |
5482 | flagword flags = syms[idx]->flags; | |
5483 | int type; | |
252b5132 | 5484 | |
174fd7f9 RS |
5485 | if (!name_local_sections |
5486 | && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM) | |
079e9a2f AM |
5487 | { |
5488 | /* Local section symbols have no name. */ | |
5489 | sym.st_name = 0; | |
5490 | } | |
5491 | else | |
5492 | { | |
5493 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
5494 | syms[idx]->name, | |
b34976b6 | 5495 | TRUE, FALSE); |
079e9a2f | 5496 | if (sym.st_name == (unsigned long) -1) |
5ed6aba4 NC |
5497 | { |
5498 | _bfd_stringtab_free (stt); | |
5499 | return FALSE; | |
5500 | } | |
079e9a2f | 5501 | } |
252b5132 | 5502 | |
079e9a2f | 5503 | type_ptr = elf_symbol_from (abfd, syms[idx]); |
252b5132 | 5504 | |
079e9a2f AM |
5505 | if ((flags & BSF_SECTION_SYM) == 0 |
5506 | && bfd_is_com_section (syms[idx]->section)) | |
5507 | { | |
5508 | /* ELF common symbols put the alignment into the `value' field, | |
5509 | and the size into the `size' field. This is backwards from | |
5510 | how BFD handles it, so reverse it here. */ | |
5511 | sym.st_size = value; | |
5512 | if (type_ptr == NULL | |
5513 | || type_ptr->internal_elf_sym.st_value == 0) | |
5514 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
5515 | else | |
5516 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
5517 | sym.st_shndx = _bfd_elf_section_from_bfd_section | |
5518 | (abfd, syms[idx]->section); | |
5519 | } | |
5520 | else | |
5521 | { | |
5522 | asection *sec = syms[idx]->section; | |
5523 | int shndx; | |
252b5132 | 5524 | |
079e9a2f AM |
5525 | if (sec->output_section) |
5526 | { | |
5527 | value += sec->output_offset; | |
5528 | sec = sec->output_section; | |
5529 | } | |
589e6347 | 5530 | |
079e9a2f AM |
5531 | /* Don't add in the section vma for relocatable output. */ |
5532 | if (! relocatable_p) | |
5533 | value += sec->vma; | |
5534 | sym.st_value = value; | |
5535 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
5536 | ||
5537 | if (bfd_is_abs_section (sec) | |
5538 | && type_ptr != NULL | |
5539 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
5540 | { | |
5541 | /* This symbol is in a real ELF section which we did | |
5542 | not create as a BFD section. Undo the mapping done | |
5543 | by copy_private_symbol_data. */ | |
5544 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
5545 | switch (shndx) | |
5546 | { | |
5547 | case MAP_ONESYMTAB: | |
5548 | shndx = elf_onesymtab (abfd); | |
5549 | break; | |
5550 | case MAP_DYNSYMTAB: | |
5551 | shndx = elf_dynsymtab (abfd); | |
5552 | break; | |
5553 | case MAP_STRTAB: | |
5554 | shndx = elf_tdata (abfd)->strtab_section; | |
5555 | break; | |
5556 | case MAP_SHSTRTAB: | |
5557 | shndx = elf_tdata (abfd)->shstrtab_section; | |
5558 | break; | |
9ad5cbcf AM |
5559 | case MAP_SYM_SHNDX: |
5560 | shndx = elf_tdata (abfd)->symtab_shndx_section; | |
5561 | break; | |
079e9a2f AM |
5562 | default: |
5563 | break; | |
5564 | } | |
5565 | } | |
5566 | else | |
5567 | { | |
5568 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
252b5132 | 5569 | |
079e9a2f AM |
5570 | if (shndx == -1) |
5571 | { | |
5572 | asection *sec2; | |
5573 | ||
5574 | /* Writing this would be a hell of a lot easier if | |
5575 | we had some decent documentation on bfd, and | |
5576 | knew what to expect of the library, and what to | |
5577 | demand of applications. For example, it | |
5578 | appears that `objcopy' might not set the | |
5579 | section of a symbol to be a section that is | |
5580 | actually in the output file. */ | |
5581 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
589e6347 NC |
5582 | if (sec2 == NULL) |
5583 | { | |
5584 | _bfd_error_handler (_("\ | |
5585 | Unable to find equivalent output section for symbol '%s' from section '%s'"), | |
5586 | syms[idx]->name ? syms[idx]->name : "<Local sym>", | |
5587 | sec->name); | |
811072d8 | 5588 | bfd_set_error (bfd_error_invalid_operation); |
5ed6aba4 | 5589 | _bfd_stringtab_free (stt); |
589e6347 NC |
5590 | return FALSE; |
5591 | } | |
811072d8 | 5592 | |
079e9a2f AM |
5593 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); |
5594 | BFD_ASSERT (shndx != -1); | |
5595 | } | |
5596 | } | |
252b5132 | 5597 | |
079e9a2f AM |
5598 | sym.st_shndx = shndx; |
5599 | } | |
252b5132 | 5600 | |
13ae64f3 JJ |
5601 | if ((flags & BSF_THREAD_LOCAL) != 0) |
5602 | type = STT_TLS; | |
5603 | else if ((flags & BSF_FUNCTION) != 0) | |
079e9a2f AM |
5604 | type = STT_FUNC; |
5605 | else if ((flags & BSF_OBJECT) != 0) | |
5606 | type = STT_OBJECT; | |
5607 | else | |
5608 | type = STT_NOTYPE; | |
252b5132 | 5609 | |
13ae64f3 JJ |
5610 | if (syms[idx]->section->flags & SEC_THREAD_LOCAL) |
5611 | type = STT_TLS; | |
5612 | ||
589e6347 | 5613 | /* Processor-specific types. */ |
079e9a2f AM |
5614 | if (type_ptr != NULL |
5615 | && bed->elf_backend_get_symbol_type) | |
5616 | type = ((*bed->elf_backend_get_symbol_type) | |
5617 | (&type_ptr->internal_elf_sym, type)); | |
252b5132 | 5618 | |
079e9a2f AM |
5619 | if (flags & BSF_SECTION_SYM) |
5620 | { | |
5621 | if (flags & BSF_GLOBAL) | |
5622 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); | |
5623 | else | |
5624 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
5625 | } | |
5626 | else if (bfd_is_com_section (syms[idx]->section)) | |
5627 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); | |
5628 | else if (bfd_is_und_section (syms[idx]->section)) | |
5629 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
5630 | ? STB_WEAK | |
5631 | : STB_GLOBAL), | |
5632 | type); | |
5633 | else if (flags & BSF_FILE) | |
5634 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
5635 | else | |
5636 | { | |
5637 | int bind = STB_LOCAL; | |
252b5132 | 5638 | |
079e9a2f AM |
5639 | if (flags & BSF_LOCAL) |
5640 | bind = STB_LOCAL; | |
5641 | else if (flags & BSF_WEAK) | |
5642 | bind = STB_WEAK; | |
5643 | else if (flags & BSF_GLOBAL) | |
5644 | bind = STB_GLOBAL; | |
252b5132 | 5645 | |
079e9a2f AM |
5646 | sym.st_info = ELF_ST_INFO (bind, type); |
5647 | } | |
252b5132 | 5648 | |
079e9a2f AM |
5649 | if (type_ptr != NULL) |
5650 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
5651 | else | |
5652 | sym.st_other = 0; | |
252b5132 | 5653 | |
9ad5cbcf | 5654 | bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); |
079e9a2f | 5655 | outbound_syms += bed->s->sizeof_sym; |
9ad5cbcf AM |
5656 | if (outbound_shndx != NULL) |
5657 | outbound_shndx += sizeof (Elf_External_Sym_Shndx); | |
079e9a2f | 5658 | } |
252b5132 | 5659 | |
079e9a2f AM |
5660 | *sttp = stt; |
5661 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
5662 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
252b5132 | 5663 | |
079e9a2f AM |
5664 | symstrtab_hdr->sh_flags = 0; |
5665 | symstrtab_hdr->sh_addr = 0; | |
5666 | symstrtab_hdr->sh_entsize = 0; | |
5667 | symstrtab_hdr->sh_link = 0; | |
5668 | symstrtab_hdr->sh_info = 0; | |
5669 | symstrtab_hdr->sh_addralign = 1; | |
252b5132 | 5670 | |
b34976b6 | 5671 | return TRUE; |
252b5132 RH |
5672 | } |
5673 | ||
5674 | /* Return the number of bytes required to hold the symtab vector. | |
5675 | ||
5676 | Note that we base it on the count plus 1, since we will null terminate | |
5677 | the vector allocated based on this size. However, the ELF symbol table | |
5678 | always has a dummy entry as symbol #0, so it ends up even. */ | |
5679 | ||
5680 | long | |
217aa764 | 5681 | _bfd_elf_get_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
5682 | { |
5683 | long symcount; | |
5684 | long symtab_size; | |
5685 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
5686 | ||
5687 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
5688 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
5689 | if (symcount > 0) | |
5690 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
5691 | |
5692 | return symtab_size; | |
5693 | } | |
5694 | ||
5695 | long | |
217aa764 | 5696 | _bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) |
252b5132 RH |
5697 | { |
5698 | long symcount; | |
5699 | long symtab_size; | |
5700 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
5701 | ||
5702 | if (elf_dynsymtab (abfd) == 0) | |
5703 | { | |
5704 | bfd_set_error (bfd_error_invalid_operation); | |
5705 | return -1; | |
5706 | } | |
5707 | ||
5708 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
b99d1833 AM |
5709 | symtab_size = (symcount + 1) * (sizeof (asymbol *)); |
5710 | if (symcount > 0) | |
5711 | symtab_size -= sizeof (asymbol *); | |
252b5132 RH |
5712 | |
5713 | return symtab_size; | |
5714 | } | |
5715 | ||
5716 | long | |
217aa764 AM |
5717 | _bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
5718 | sec_ptr asect) | |
252b5132 RH |
5719 | { |
5720 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
5721 | } | |
5722 | ||
5723 | /* Canonicalize the relocs. */ | |
5724 | ||
5725 | long | |
217aa764 AM |
5726 | _bfd_elf_canonicalize_reloc (bfd *abfd, |
5727 | sec_ptr section, | |
5728 | arelent **relptr, | |
5729 | asymbol **symbols) | |
252b5132 RH |
5730 | { |
5731 | arelent *tblptr; | |
5732 | unsigned int i; | |
9c5bfbb7 | 5733 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
252b5132 | 5734 | |
b34976b6 | 5735 | if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
252b5132 RH |
5736 | return -1; |
5737 | ||
5738 | tblptr = section->relocation; | |
5739 | for (i = 0; i < section->reloc_count; i++) | |
5740 | *relptr++ = tblptr++; | |
5741 | ||
5742 | *relptr = NULL; | |
5743 | ||
5744 | return section->reloc_count; | |
5745 | } | |
5746 | ||
5747 | long | |
6cee3f79 | 5748 | _bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) |
252b5132 | 5749 | { |
9c5bfbb7 | 5750 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 5751 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); |
252b5132 RH |
5752 | |
5753 | if (symcount >= 0) | |
5754 | bfd_get_symcount (abfd) = symcount; | |
5755 | return symcount; | |
5756 | } | |
5757 | ||
5758 | long | |
217aa764 AM |
5759 | _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd, |
5760 | asymbol **allocation) | |
252b5132 | 5761 | { |
9c5bfbb7 | 5762 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
217aa764 | 5763 | long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); |
1f70368c DJ |
5764 | |
5765 | if (symcount >= 0) | |
5766 | bfd_get_dynamic_symcount (abfd) = symcount; | |
5767 | return symcount; | |
252b5132 RH |
5768 | } |
5769 | ||
5770 | /* Return the size required for the dynamic reloc entries. Any | |
5771 | section that was actually installed in the BFD, and has type | |
5772 | SHT_REL or SHT_RELA, and uses the dynamic symbol table, is | |
5773 | considered to be a dynamic reloc section. */ | |
5774 | ||
5775 | long | |
217aa764 | 5776 | _bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd) |
252b5132 RH |
5777 | { |
5778 | long ret; | |
5779 | asection *s; | |
5780 | ||
5781 | if (elf_dynsymtab (abfd) == 0) | |
5782 | { | |
5783 | bfd_set_error (bfd_error_invalid_operation); | |
5784 | return -1; | |
5785 | } | |
5786 | ||
5787 | ret = sizeof (arelent *); | |
5788 | for (s = abfd->sections; s != NULL; s = s->next) | |
5789 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
5790 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL | |
5791 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
5792 | ret += ((s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize) | |
5793 | * sizeof (arelent *)); | |
5794 | ||
5795 | return ret; | |
5796 | } | |
5797 | ||
5798 | /* Canonicalize the dynamic relocation entries. Note that we return | |
5799 | the dynamic relocations as a single block, although they are | |
5800 | actually associated with particular sections; the interface, which | |
5801 | was designed for SunOS style shared libraries, expects that there | |
5802 | is only one set of dynamic relocs. Any section that was actually | |
5803 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses | |
5804 | the dynamic symbol table, is considered to be a dynamic reloc | |
5805 | section. */ | |
5806 | ||
5807 | long | |
217aa764 AM |
5808 | _bfd_elf_canonicalize_dynamic_reloc (bfd *abfd, |
5809 | arelent **storage, | |
5810 | asymbol **syms) | |
252b5132 | 5811 | { |
217aa764 | 5812 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 RH |
5813 | asection *s; |
5814 | long ret; | |
5815 | ||
5816 | if (elf_dynsymtab (abfd) == 0) | |
5817 | { | |
5818 | bfd_set_error (bfd_error_invalid_operation); | |
5819 | return -1; | |
5820 | } | |
5821 | ||
5822 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
5823 | ret = 0; | |
5824 | for (s = abfd->sections; s != NULL; s = s->next) | |
5825 | { | |
5826 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
5827 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL | |
5828 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
5829 | { | |
5830 | arelent *p; | |
5831 | long count, i; | |
5832 | ||
b34976b6 | 5833 | if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
252b5132 RH |
5834 | return -1; |
5835 | count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize; | |
5836 | p = s->relocation; | |
5837 | for (i = 0; i < count; i++) | |
5838 | *storage++ = p++; | |
5839 | ret += count; | |
5840 | } | |
5841 | } | |
5842 | ||
5843 | *storage = NULL; | |
5844 | ||
5845 | return ret; | |
5846 | } | |
5847 | \f | |
5848 | /* Read in the version information. */ | |
5849 | ||
b34976b6 | 5850 | bfd_boolean |
217aa764 | 5851 | _bfd_elf_slurp_version_tables (bfd *abfd) |
252b5132 RH |
5852 | { |
5853 | bfd_byte *contents = NULL; | |
dc810e39 | 5854 | bfd_size_type amt; |
252b5132 RH |
5855 | |
5856 | if (elf_dynverdef (abfd) != 0) | |
5857 | { | |
5858 | Elf_Internal_Shdr *hdr; | |
5859 | Elf_External_Verdef *everdef; | |
5860 | Elf_Internal_Verdef *iverdef; | |
f631889e UD |
5861 | Elf_Internal_Verdef *iverdefarr; |
5862 | Elf_Internal_Verdef iverdefmem; | |
252b5132 | 5863 | unsigned int i; |
062e2358 | 5864 | unsigned int maxidx; |
252b5132 RH |
5865 | |
5866 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
5867 | ||
217aa764 | 5868 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
5869 | if (contents == NULL) |
5870 | goto error_return; | |
5871 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 5872 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
5873 | goto error_return; |
5874 | ||
f631889e UD |
5875 | /* We know the number of entries in the section but not the maximum |
5876 | index. Therefore we have to run through all entries and find | |
5877 | the maximum. */ | |
252b5132 | 5878 | everdef = (Elf_External_Verdef *) contents; |
f631889e UD |
5879 | maxidx = 0; |
5880 | for (i = 0; i < hdr->sh_info; ++i) | |
5881 | { | |
5882 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); | |
5883 | ||
062e2358 AM |
5884 | if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx) |
5885 | maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION); | |
f631889e UD |
5886 | |
5887 | everdef = ((Elf_External_Verdef *) | |
5888 | ((bfd_byte *) everdef + iverdefmem.vd_next)); | |
5889 | } | |
5890 | ||
dc810e39 | 5891 | amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); |
217aa764 | 5892 | elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); |
f631889e UD |
5893 | if (elf_tdata (abfd)->verdef == NULL) |
5894 | goto error_return; | |
5895 | ||
5896 | elf_tdata (abfd)->cverdefs = maxidx; | |
5897 | ||
5898 | everdef = (Elf_External_Verdef *) contents; | |
5899 | iverdefarr = elf_tdata (abfd)->verdef; | |
5900 | for (i = 0; i < hdr->sh_info; i++) | |
252b5132 RH |
5901 | { |
5902 | Elf_External_Verdaux *everdaux; | |
5903 | Elf_Internal_Verdaux *iverdaux; | |
5904 | unsigned int j; | |
5905 | ||
f631889e UD |
5906 | _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem); |
5907 | ||
5908 | iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1]; | |
5909 | memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef)); | |
252b5132 RH |
5910 | |
5911 | iverdef->vd_bfd = abfd; | |
5912 | ||
dc810e39 | 5913 | amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); |
217aa764 | 5914 | iverdef->vd_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
5915 | if (iverdef->vd_auxptr == NULL) |
5916 | goto error_return; | |
5917 | ||
5918 | everdaux = ((Elf_External_Verdaux *) | |
5919 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
5920 | iverdaux = iverdef->vd_auxptr; | |
5921 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
5922 | { | |
5923 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
5924 | ||
5925 | iverdaux->vda_nodename = | |
5926 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
5927 | iverdaux->vda_name); | |
5928 | if (iverdaux->vda_nodename == NULL) | |
5929 | goto error_return; | |
5930 | ||
5931 | if (j + 1 < iverdef->vd_cnt) | |
5932 | iverdaux->vda_nextptr = iverdaux + 1; | |
5933 | else | |
5934 | iverdaux->vda_nextptr = NULL; | |
5935 | ||
5936 | everdaux = ((Elf_External_Verdaux *) | |
5937 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
5938 | } | |
5939 | ||
5940 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
5941 | ||
5942 | if (i + 1 < hdr->sh_info) | |
5943 | iverdef->vd_nextdef = iverdef + 1; | |
5944 | else | |
5945 | iverdef->vd_nextdef = NULL; | |
5946 | ||
5947 | everdef = ((Elf_External_Verdef *) | |
5948 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
5949 | } | |
5950 | ||
5951 | free (contents); | |
5952 | contents = NULL; | |
5953 | } | |
5954 | ||
5955 | if (elf_dynverref (abfd) != 0) | |
5956 | { | |
5957 | Elf_Internal_Shdr *hdr; | |
5958 | Elf_External_Verneed *everneed; | |
5959 | Elf_Internal_Verneed *iverneed; | |
5960 | unsigned int i; | |
5961 | ||
5962 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
5963 | ||
dc810e39 | 5964 | amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); |
217aa764 | 5965 | elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); |
252b5132 RH |
5966 | if (elf_tdata (abfd)->verref == NULL) |
5967 | goto error_return; | |
5968 | ||
5969 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
5970 | ||
217aa764 | 5971 | contents = bfd_malloc (hdr->sh_size); |
252b5132 RH |
5972 | if (contents == NULL) |
5973 | goto error_return; | |
5974 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
217aa764 | 5975 | || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size) |
252b5132 RH |
5976 | goto error_return; |
5977 | ||
5978 | everneed = (Elf_External_Verneed *) contents; | |
5979 | iverneed = elf_tdata (abfd)->verref; | |
5980 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
5981 | { | |
5982 | Elf_External_Vernaux *evernaux; | |
5983 | Elf_Internal_Vernaux *ivernaux; | |
5984 | unsigned int j; | |
5985 | ||
5986 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
5987 | ||
5988 | iverneed->vn_bfd = abfd; | |
5989 | ||
5990 | iverneed->vn_filename = | |
5991 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
5992 | iverneed->vn_file); | |
5993 | if (iverneed->vn_filename == NULL) | |
5994 | goto error_return; | |
5995 | ||
dc810e39 AM |
5996 | amt = iverneed->vn_cnt; |
5997 | amt *= sizeof (Elf_Internal_Vernaux); | |
217aa764 | 5998 | iverneed->vn_auxptr = bfd_alloc (abfd, amt); |
252b5132 RH |
5999 | |
6000 | evernaux = ((Elf_External_Vernaux *) | |
6001 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
6002 | ivernaux = iverneed->vn_auxptr; | |
6003 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
6004 | { | |
6005 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
6006 | ||
6007 | ivernaux->vna_nodename = | |
6008 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
6009 | ivernaux->vna_name); | |
6010 | if (ivernaux->vna_nodename == NULL) | |
6011 | goto error_return; | |
6012 | ||
6013 | if (j + 1 < iverneed->vn_cnt) | |
6014 | ivernaux->vna_nextptr = ivernaux + 1; | |
6015 | else | |
6016 | ivernaux->vna_nextptr = NULL; | |
6017 | ||
6018 | evernaux = ((Elf_External_Vernaux *) | |
6019 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
6020 | } | |
6021 | ||
6022 | if (i + 1 < hdr->sh_info) | |
6023 | iverneed->vn_nextref = iverneed + 1; | |
6024 | else | |
6025 | iverneed->vn_nextref = NULL; | |
6026 | ||
6027 | everneed = ((Elf_External_Verneed *) | |
6028 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
6029 | } | |
6030 | ||
6031 | free (contents); | |
6032 | contents = NULL; | |
6033 | } | |
6034 | ||
b34976b6 | 6035 | return TRUE; |
252b5132 RH |
6036 | |
6037 | error_return: | |
5ed6aba4 | 6038 | if (contents != NULL) |
252b5132 | 6039 | free (contents); |
b34976b6 | 6040 | return FALSE; |
252b5132 RH |
6041 | } |
6042 | \f | |
6043 | asymbol * | |
217aa764 | 6044 | _bfd_elf_make_empty_symbol (bfd *abfd) |
252b5132 RH |
6045 | { |
6046 | elf_symbol_type *newsym; | |
dc810e39 | 6047 | bfd_size_type amt = sizeof (elf_symbol_type); |
252b5132 | 6048 | |
217aa764 | 6049 | newsym = bfd_zalloc (abfd, amt); |
252b5132 RH |
6050 | if (!newsym) |
6051 | return NULL; | |
6052 | else | |
6053 | { | |
6054 | newsym->symbol.the_bfd = abfd; | |
6055 | return &newsym->symbol; | |
6056 | } | |
6057 | } | |
6058 | ||
6059 | void | |
217aa764 AM |
6060 | _bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
6061 | asymbol *symbol, | |
6062 | symbol_info *ret) | |
252b5132 RH |
6063 | { |
6064 | bfd_symbol_info (symbol, ret); | |
6065 | } | |
6066 | ||
6067 | /* Return whether a symbol name implies a local symbol. Most targets | |
6068 | use this function for the is_local_label_name entry point, but some | |
6069 | override it. */ | |
6070 | ||
b34976b6 | 6071 | bfd_boolean |
217aa764 AM |
6072 | _bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
6073 | const char *name) | |
252b5132 RH |
6074 | { |
6075 | /* Normal local symbols start with ``.L''. */ | |
6076 | if (name[0] == '.' && name[1] == 'L') | |
b34976b6 | 6077 | return TRUE; |
252b5132 RH |
6078 | |
6079 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
6080 | DWARF debugging symbols starting with ``..''. */ | |
6081 | if (name[0] == '.' && name[1] == '.') | |
b34976b6 | 6082 | return TRUE; |
252b5132 RH |
6083 | |
6084 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
6085 | emitting DWARF debugging output. I suspect this is actually a | |
6086 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
6087 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
6088 | underscore to be emitted on some ELF targets). For ease of use, | |
6089 | we treat such symbols as local. */ | |
6090 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
b34976b6 | 6091 | return TRUE; |
252b5132 | 6092 | |
b34976b6 | 6093 | return FALSE; |
252b5132 RH |
6094 | } |
6095 | ||
6096 | alent * | |
217aa764 AM |
6097 | _bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED, |
6098 | asymbol *symbol ATTRIBUTE_UNUSED) | |
252b5132 RH |
6099 | { |
6100 | abort (); | |
6101 | return NULL; | |
6102 | } | |
6103 | ||
b34976b6 | 6104 | bfd_boolean |
217aa764 AM |
6105 | _bfd_elf_set_arch_mach (bfd *abfd, |
6106 | enum bfd_architecture arch, | |
6107 | unsigned long machine) | |
252b5132 RH |
6108 | { |
6109 | /* If this isn't the right architecture for this backend, and this | |
6110 | isn't the generic backend, fail. */ | |
6111 | if (arch != get_elf_backend_data (abfd)->arch | |
6112 | && arch != bfd_arch_unknown | |
6113 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
b34976b6 | 6114 | return FALSE; |
252b5132 RH |
6115 | |
6116 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
6117 | } | |
6118 | ||
d1fad7c6 NC |
6119 | /* Find the function to a particular section and offset, |
6120 | for error reporting. */ | |
252b5132 | 6121 | |
b34976b6 | 6122 | static bfd_boolean |
217aa764 AM |
6123 | elf_find_function (bfd *abfd ATTRIBUTE_UNUSED, |
6124 | asection *section, | |
6125 | asymbol **symbols, | |
6126 | bfd_vma offset, | |
6127 | const char **filename_ptr, | |
6128 | const char **functionname_ptr) | |
252b5132 | 6129 | { |
252b5132 RH |
6130 | const char *filename; |
6131 | asymbol *func; | |
6132 | bfd_vma low_func; | |
6133 | asymbol **p; | |
6134 | ||
252b5132 RH |
6135 | filename = NULL; |
6136 | func = NULL; | |
6137 | low_func = 0; | |
6138 | ||
6139 | for (p = symbols; *p != NULL; p++) | |
6140 | { | |
6141 | elf_symbol_type *q; | |
6142 | ||
6143 | q = (elf_symbol_type *) *p; | |
6144 | ||
6145 | if (bfd_get_section (&q->symbol) != section) | |
6146 | continue; | |
6147 | ||
6148 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
6149 | { | |
6150 | default: | |
6151 | break; | |
6152 | case STT_FILE: | |
6153 | filename = bfd_asymbol_name (&q->symbol); | |
6154 | break; | |
6155 | case STT_NOTYPE: | |
6156 | case STT_FUNC: | |
6157 | if (q->symbol.section == section | |
6158 | && q->symbol.value >= low_func | |
6159 | && q->symbol.value <= offset) | |
6160 | { | |
6161 | func = (asymbol *) q; | |
6162 | low_func = q->symbol.value; | |
6163 | } | |
6164 | break; | |
6165 | } | |
6166 | } | |
6167 | ||
6168 | if (func == NULL) | |
b34976b6 | 6169 | return FALSE; |
252b5132 | 6170 | |
d1fad7c6 NC |
6171 | if (filename_ptr) |
6172 | *filename_ptr = filename; | |
6173 | if (functionname_ptr) | |
6174 | *functionname_ptr = bfd_asymbol_name (func); | |
6175 | ||
b34976b6 | 6176 | return TRUE; |
d1fad7c6 NC |
6177 | } |
6178 | ||
6179 | /* Find the nearest line to a particular section and offset, | |
6180 | for error reporting. */ | |
6181 | ||
b34976b6 | 6182 | bfd_boolean |
217aa764 AM |
6183 | _bfd_elf_find_nearest_line (bfd *abfd, |
6184 | asection *section, | |
6185 | asymbol **symbols, | |
6186 | bfd_vma offset, | |
6187 | const char **filename_ptr, | |
6188 | const char **functionname_ptr, | |
6189 | unsigned int *line_ptr) | |
d1fad7c6 | 6190 | { |
b34976b6 | 6191 | bfd_boolean found; |
d1fad7c6 NC |
6192 | |
6193 | if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6194 | filename_ptr, functionname_ptr, |
6195 | line_ptr)) | |
d1fad7c6 NC |
6196 | { |
6197 | if (!*functionname_ptr) | |
4e8a9624 AM |
6198 | elf_find_function (abfd, section, symbols, offset, |
6199 | *filename_ptr ? NULL : filename_ptr, | |
6200 | functionname_ptr); | |
6201 | ||
b34976b6 | 6202 | return TRUE; |
d1fad7c6 NC |
6203 | } |
6204 | ||
6205 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4e8a9624 AM |
6206 | filename_ptr, functionname_ptr, |
6207 | line_ptr, 0, | |
6208 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
d1fad7c6 NC |
6209 | { |
6210 | if (!*functionname_ptr) | |
4e8a9624 AM |
6211 | elf_find_function (abfd, section, symbols, offset, |
6212 | *filename_ptr ? NULL : filename_ptr, | |
6213 | functionname_ptr); | |
6214 | ||
b34976b6 | 6215 | return TRUE; |
d1fad7c6 NC |
6216 | } |
6217 | ||
6218 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4e8a9624 AM |
6219 | &found, filename_ptr, |
6220 | functionname_ptr, line_ptr, | |
6221 | &elf_tdata (abfd)->line_info)) | |
b34976b6 | 6222 | return FALSE; |
dc43ada5 | 6223 | if (found && (*functionname_ptr || *line_ptr)) |
b34976b6 | 6224 | return TRUE; |
d1fad7c6 NC |
6225 | |
6226 | if (symbols == NULL) | |
b34976b6 | 6227 | return FALSE; |
d1fad7c6 NC |
6228 | |
6229 | if (! elf_find_function (abfd, section, symbols, offset, | |
4e8a9624 | 6230 | filename_ptr, functionname_ptr)) |
b34976b6 | 6231 | return FALSE; |
d1fad7c6 | 6232 | |
252b5132 | 6233 | *line_ptr = 0; |
b34976b6 | 6234 | return TRUE; |
252b5132 RH |
6235 | } |
6236 | ||
6237 | int | |
217aa764 | 6238 | _bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) |
252b5132 RH |
6239 | { |
6240 | int ret; | |
6241 | ||
6242 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
6243 | if (! reloc) | |
6244 | ret += get_program_header_size (abfd); | |
6245 | return ret; | |
6246 | } | |
6247 | ||
b34976b6 | 6248 | bfd_boolean |
217aa764 AM |
6249 | _bfd_elf_set_section_contents (bfd *abfd, |
6250 | sec_ptr section, | |
0f867abe | 6251 | const void *location, |
217aa764 AM |
6252 | file_ptr offset, |
6253 | bfd_size_type count) | |
252b5132 RH |
6254 | { |
6255 | Elf_Internal_Shdr *hdr; | |
dc810e39 | 6256 | bfd_signed_vma pos; |
252b5132 RH |
6257 | |
6258 | if (! abfd->output_has_begun | |
217aa764 | 6259 | && ! _bfd_elf_compute_section_file_positions (abfd, NULL)) |
b34976b6 | 6260 | return FALSE; |
252b5132 RH |
6261 | |
6262 | hdr = &elf_section_data (section)->this_hdr; | |
dc810e39 AM |
6263 | pos = hdr->sh_offset + offset; |
6264 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
6265 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 6266 | return FALSE; |
252b5132 | 6267 | |
b34976b6 | 6268 | return TRUE; |
252b5132 RH |
6269 | } |
6270 | ||
6271 | void | |
217aa764 AM |
6272 | _bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
6273 | arelent *cache_ptr ATTRIBUTE_UNUSED, | |
6274 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED) | |
252b5132 RH |
6275 | { |
6276 | abort (); | |
6277 | } | |
6278 | ||
252b5132 RH |
6279 | /* Try to convert a non-ELF reloc into an ELF one. */ |
6280 | ||
b34976b6 | 6281 | bfd_boolean |
217aa764 | 6282 | _bfd_elf_validate_reloc (bfd *abfd, arelent *areloc) |
252b5132 | 6283 | { |
c044fabd | 6284 | /* Check whether we really have an ELF howto. */ |
252b5132 RH |
6285 | |
6286 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
6287 | { | |
6288 | bfd_reloc_code_real_type code; | |
6289 | reloc_howto_type *howto; | |
6290 | ||
6291 | /* Alien reloc: Try to determine its type to replace it with an | |
c044fabd | 6292 | equivalent ELF reloc. */ |
252b5132 RH |
6293 | |
6294 | if (areloc->howto->pc_relative) | |
6295 | { | |
6296 | switch (areloc->howto->bitsize) | |
6297 | { | |
6298 | case 8: | |
6299 | code = BFD_RELOC_8_PCREL; | |
6300 | break; | |
6301 | case 12: | |
6302 | code = BFD_RELOC_12_PCREL; | |
6303 | break; | |
6304 | case 16: | |
6305 | code = BFD_RELOC_16_PCREL; | |
6306 | break; | |
6307 | case 24: | |
6308 | code = BFD_RELOC_24_PCREL; | |
6309 | break; | |
6310 | case 32: | |
6311 | code = BFD_RELOC_32_PCREL; | |
6312 | break; | |
6313 | case 64: | |
6314 | code = BFD_RELOC_64_PCREL; | |
6315 | break; | |
6316 | default: | |
6317 | goto fail; | |
6318 | } | |
6319 | ||
6320 | howto = bfd_reloc_type_lookup (abfd, code); | |
6321 | ||
6322 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
6323 | { | |
6324 | if (howto->pcrel_offset) | |
6325 | areloc->addend += areloc->address; | |
6326 | else | |
6327 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
6328 | } | |
6329 | } | |
6330 | else | |
6331 | { | |
6332 | switch (areloc->howto->bitsize) | |
6333 | { | |
6334 | case 8: | |
6335 | code = BFD_RELOC_8; | |
6336 | break; | |
6337 | case 14: | |
6338 | code = BFD_RELOC_14; | |
6339 | break; | |
6340 | case 16: | |
6341 | code = BFD_RELOC_16; | |
6342 | break; | |
6343 | case 26: | |
6344 | code = BFD_RELOC_26; | |
6345 | break; | |
6346 | case 32: | |
6347 | code = BFD_RELOC_32; | |
6348 | break; | |
6349 | case 64: | |
6350 | code = BFD_RELOC_64; | |
6351 | break; | |
6352 | default: | |
6353 | goto fail; | |
6354 | } | |
6355 | ||
6356 | howto = bfd_reloc_type_lookup (abfd, code); | |
6357 | } | |
6358 | ||
6359 | if (howto) | |
6360 | areloc->howto = howto; | |
6361 | else | |
6362 | goto fail; | |
6363 | } | |
6364 | ||
b34976b6 | 6365 | return TRUE; |
252b5132 RH |
6366 | |
6367 | fail: | |
6368 | (*_bfd_error_handler) | |
6369 | (_("%s: unsupported relocation type %s"), | |
8f615d07 | 6370 | bfd_archive_filename (abfd), areloc->howto->name); |
252b5132 | 6371 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 6372 | return FALSE; |
252b5132 RH |
6373 | } |
6374 | ||
b34976b6 | 6375 | bfd_boolean |
217aa764 | 6376 | _bfd_elf_close_and_cleanup (bfd *abfd) |
252b5132 RH |
6377 | { |
6378 | if (bfd_get_format (abfd) == bfd_object) | |
6379 | { | |
6380 | if (elf_shstrtab (abfd) != NULL) | |
2b0f7ef9 | 6381 | _bfd_elf_strtab_free (elf_shstrtab (abfd)); |
252b5132 RH |
6382 | } |
6383 | ||
6384 | return _bfd_generic_close_and_cleanup (abfd); | |
6385 | } | |
6386 | ||
6387 | /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY | |
6388 | in the relocation's offset. Thus we cannot allow any sort of sanity | |
6389 | range-checking to interfere. There is nothing else to do in processing | |
6390 | this reloc. */ | |
6391 | ||
6392 | bfd_reloc_status_type | |
217aa764 AM |
6393 | _bfd_elf_rel_vtable_reloc_fn |
6394 | (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED, | |
fc0a2244 | 6395 | struct bfd_symbol *symbol ATTRIBUTE_UNUSED, |
217aa764 AM |
6396 | void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, |
6397 | bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED) | |
252b5132 RH |
6398 | { |
6399 | return bfd_reloc_ok; | |
6400 | } | |
252b5132 RH |
6401 | \f |
6402 | /* Elf core file support. Much of this only works on native | |
6403 | toolchains, since we rely on knowing the | |
6404 | machine-dependent procfs structure in order to pick | |
c044fabd | 6405 | out details about the corefile. */ |
252b5132 RH |
6406 | |
6407 | #ifdef HAVE_SYS_PROCFS_H | |
6408 | # include <sys/procfs.h> | |
6409 | #endif | |
6410 | ||
c044fabd | 6411 | /* FIXME: this is kinda wrong, but it's what gdb wants. */ |
252b5132 RH |
6412 | |
6413 | static int | |
217aa764 | 6414 | elfcore_make_pid (bfd *abfd) |
252b5132 RH |
6415 | { |
6416 | return ((elf_tdata (abfd)->core_lwpid << 16) | |
6417 | + (elf_tdata (abfd)->core_pid)); | |
6418 | } | |
6419 | ||
252b5132 RH |
6420 | /* If there isn't a section called NAME, make one, using |
6421 | data from SECT. Note, this function will generate a | |
6422 | reference to NAME, so you shouldn't deallocate or | |
c044fabd | 6423 | overwrite it. */ |
252b5132 | 6424 | |
b34976b6 | 6425 | static bfd_boolean |
217aa764 | 6426 | elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) |
252b5132 | 6427 | { |
c044fabd | 6428 | asection *sect2; |
252b5132 RH |
6429 | |
6430 | if (bfd_get_section_by_name (abfd, name) != NULL) | |
b34976b6 | 6431 | return TRUE; |
252b5132 RH |
6432 | |
6433 | sect2 = bfd_make_section (abfd, name); | |
6434 | if (sect2 == NULL) | |
b34976b6 | 6435 | return FALSE; |
252b5132 RH |
6436 | |
6437 | sect2->_raw_size = sect->_raw_size; | |
6438 | sect2->filepos = sect->filepos; | |
6439 | sect2->flags = sect->flags; | |
6440 | sect2->alignment_power = sect->alignment_power; | |
b34976b6 | 6441 | return TRUE; |
252b5132 RH |
6442 | } |
6443 | ||
bb0082d6 AM |
6444 | /* Create a pseudosection containing SIZE bytes at FILEPOS. This |
6445 | actually creates up to two pseudosections: | |
6446 | - For the single-threaded case, a section named NAME, unless | |
6447 | such a section already exists. | |
6448 | - For the multi-threaded case, a section named "NAME/PID", where | |
6449 | PID is elfcore_make_pid (abfd). | |
6450 | Both pseudosections have identical contents. */ | |
b34976b6 | 6451 | bfd_boolean |
217aa764 AM |
6452 | _bfd_elfcore_make_pseudosection (bfd *abfd, |
6453 | char *name, | |
6454 | size_t size, | |
6455 | ufile_ptr filepos) | |
bb0082d6 AM |
6456 | { |
6457 | char buf[100]; | |
6458 | char *threaded_name; | |
d4c88bbb | 6459 | size_t len; |
bb0082d6 AM |
6460 | asection *sect; |
6461 | ||
6462 | /* Build the section name. */ | |
6463 | ||
6464 | sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); | |
d4c88bbb | 6465 | len = strlen (buf) + 1; |
217aa764 | 6466 | threaded_name = bfd_alloc (abfd, len); |
bb0082d6 | 6467 | if (threaded_name == NULL) |
b34976b6 | 6468 | return FALSE; |
d4c88bbb | 6469 | memcpy (threaded_name, buf, len); |
bb0082d6 | 6470 | |
62f3bb11 | 6471 | sect = bfd_make_section_anyway (abfd, threaded_name); |
bb0082d6 | 6472 | if (sect == NULL) |
b34976b6 | 6473 | return FALSE; |
bb0082d6 AM |
6474 | sect->_raw_size = size; |
6475 | sect->filepos = filepos; | |
6476 | sect->flags = SEC_HAS_CONTENTS; | |
6477 | sect->alignment_power = 2; | |
6478 | ||
936e320b | 6479 | return elfcore_maybe_make_sect (abfd, name, sect); |
bb0082d6 AM |
6480 | } |
6481 | ||
252b5132 | 6482 | /* prstatus_t exists on: |
4a938328 | 6483 | solaris 2.5+ |
252b5132 RH |
6484 | linux 2.[01] + glibc |
6485 | unixware 4.2 | |
6486 | */ | |
6487 | ||
6488 | #if defined (HAVE_PRSTATUS_T) | |
a7b97311 | 6489 | |
b34976b6 | 6490 | static bfd_boolean |
217aa764 | 6491 | elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6492 | { |
dc810e39 | 6493 | size_t raw_size; |
7ee38065 | 6494 | int offset; |
252b5132 | 6495 | |
4a938328 MS |
6496 | if (note->descsz == sizeof (prstatus_t)) |
6497 | { | |
6498 | prstatus_t prstat; | |
252b5132 | 6499 | |
e0ebfc61 | 6500 | raw_size = sizeof (prstat.pr_reg); |
7ee38065 | 6501 | offset = offsetof (prstatus_t, pr_reg); |
4a938328 | 6502 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
252b5132 | 6503 | |
fa49d224 NC |
6504 | /* Do not overwrite the core signal if it |
6505 | has already been set by another thread. */ | |
6506 | if (elf_tdata (abfd)->core_signal == 0) | |
6507 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 | 6508 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
252b5132 | 6509 | |
4a938328 MS |
6510 | /* pr_who exists on: |
6511 | solaris 2.5+ | |
6512 | unixware 4.2 | |
6513 | pr_who doesn't exist on: | |
6514 | linux 2.[01] | |
6515 | */ | |
252b5132 | 6516 | #if defined (HAVE_PRSTATUS_T_PR_WHO) |
4a938328 | 6517 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
252b5132 | 6518 | #endif |
4a938328 | 6519 | } |
7ee38065 | 6520 | #if defined (HAVE_PRSTATUS32_T) |
4a938328 MS |
6521 | else if (note->descsz == sizeof (prstatus32_t)) |
6522 | { | |
6523 | /* 64-bit host, 32-bit corefile */ | |
6524 | prstatus32_t prstat; | |
6525 | ||
e0ebfc61 | 6526 | raw_size = sizeof (prstat.pr_reg); |
7ee38065 | 6527 | offset = offsetof (prstatus32_t, pr_reg); |
4a938328 MS |
6528 | memcpy (&prstat, note->descdata, sizeof (prstat)); |
6529 | ||
fa49d224 NC |
6530 | /* Do not overwrite the core signal if it |
6531 | has already been set by another thread. */ | |
6532 | if (elf_tdata (abfd)->core_signal == 0) | |
6533 | elf_tdata (abfd)->core_signal = prstat.pr_cursig; | |
4a938328 MS |
6534 | elf_tdata (abfd)->core_pid = prstat.pr_pid; |
6535 | ||
6536 | /* pr_who exists on: | |
6537 | solaris 2.5+ | |
6538 | unixware 4.2 | |
6539 | pr_who doesn't exist on: | |
6540 | linux 2.[01] | |
6541 | */ | |
7ee38065 | 6542 | #if defined (HAVE_PRSTATUS32_T_PR_WHO) |
4a938328 MS |
6543 | elf_tdata (abfd)->core_lwpid = prstat.pr_who; |
6544 | #endif | |
6545 | } | |
7ee38065 | 6546 | #endif /* HAVE_PRSTATUS32_T */ |
4a938328 MS |
6547 | else |
6548 | { | |
6549 | /* Fail - we don't know how to handle any other | |
6550 | note size (ie. data object type). */ | |
b34976b6 | 6551 | return TRUE; |
4a938328 | 6552 | } |
252b5132 | 6553 | |
bb0082d6 | 6554 | /* Make a ".reg/999" section and a ".reg" section. */ |
936e320b AM |
6555 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
6556 | raw_size, note->descpos + offset); | |
252b5132 RH |
6557 | } |
6558 | #endif /* defined (HAVE_PRSTATUS_T) */ | |
6559 | ||
bb0082d6 | 6560 | /* Create a pseudosection containing the exact contents of NOTE. */ |
b34976b6 | 6561 | static bfd_boolean |
217aa764 AM |
6562 | elfcore_make_note_pseudosection (bfd *abfd, |
6563 | char *name, | |
6564 | Elf_Internal_Note *note) | |
252b5132 | 6565 | { |
936e320b AM |
6566 | return _bfd_elfcore_make_pseudosection (abfd, name, |
6567 | note->descsz, note->descpos); | |
252b5132 RH |
6568 | } |
6569 | ||
ff08c6bb JB |
6570 | /* There isn't a consistent prfpregset_t across platforms, |
6571 | but it doesn't matter, because we don't have to pick this | |
c044fabd KH |
6572 | data structure apart. */ |
6573 | ||
b34976b6 | 6574 | static bfd_boolean |
217aa764 | 6575 | elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6576 | { |
6577 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); | |
6578 | } | |
6579 | ||
ff08c6bb JB |
6580 | /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note |
6581 | type of 5 (NT_PRXFPREG). Just include the whole note's contents | |
6582 | literally. */ | |
c044fabd | 6583 | |
b34976b6 | 6584 | static bfd_boolean |
217aa764 | 6585 | elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) |
ff08c6bb JB |
6586 | { |
6587 | return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); | |
6588 | } | |
6589 | ||
252b5132 | 6590 | #if defined (HAVE_PRPSINFO_T) |
4a938328 | 6591 | typedef prpsinfo_t elfcore_psinfo_t; |
7ee38065 | 6592 | #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
6593 | typedef prpsinfo32_t elfcore_psinfo32_t; |
6594 | #endif | |
252b5132 RH |
6595 | #endif |
6596 | ||
6597 | #if defined (HAVE_PSINFO_T) | |
4a938328 | 6598 | typedef psinfo_t elfcore_psinfo_t; |
7ee38065 | 6599 | #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */ |
4a938328 MS |
6600 | typedef psinfo32_t elfcore_psinfo32_t; |
6601 | #endif | |
252b5132 RH |
6602 | #endif |
6603 | ||
252b5132 RH |
6604 | /* return a malloc'ed copy of a string at START which is at |
6605 | most MAX bytes long, possibly without a terminating '\0'. | |
c044fabd | 6606 | the copy will always have a terminating '\0'. */ |
252b5132 | 6607 | |
936e320b | 6608 | char * |
217aa764 | 6609 | _bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) |
252b5132 | 6610 | { |
dc810e39 | 6611 | char *dups; |
c044fabd | 6612 | char *end = memchr (start, '\0', max); |
dc810e39 | 6613 | size_t len; |
252b5132 RH |
6614 | |
6615 | if (end == NULL) | |
6616 | len = max; | |
6617 | else | |
6618 | len = end - start; | |
6619 | ||
217aa764 | 6620 | dups = bfd_alloc (abfd, len + 1); |
dc810e39 | 6621 | if (dups == NULL) |
252b5132 RH |
6622 | return NULL; |
6623 | ||
dc810e39 AM |
6624 | memcpy (dups, start, len); |
6625 | dups[len] = '\0'; | |
252b5132 | 6626 | |
dc810e39 | 6627 | return dups; |
252b5132 RH |
6628 | } |
6629 | ||
bb0082d6 | 6630 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
b34976b6 | 6631 | static bfd_boolean |
217aa764 | 6632 | elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6633 | { |
4a938328 MS |
6634 | if (note->descsz == sizeof (elfcore_psinfo_t)) |
6635 | { | |
6636 | elfcore_psinfo_t psinfo; | |
252b5132 | 6637 | |
7ee38065 | 6638 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 6639 | |
4a938328 | 6640 | elf_tdata (abfd)->core_program |
936e320b AM |
6641 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
6642 | sizeof (psinfo.pr_fname)); | |
252b5132 | 6643 | |
4a938328 | 6644 | elf_tdata (abfd)->core_command |
936e320b AM |
6645 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
6646 | sizeof (psinfo.pr_psargs)); | |
4a938328 | 6647 | } |
7ee38065 | 6648 | #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T) |
4a938328 MS |
6649 | else if (note->descsz == sizeof (elfcore_psinfo32_t)) |
6650 | { | |
6651 | /* 64-bit host, 32-bit corefile */ | |
6652 | elfcore_psinfo32_t psinfo; | |
6653 | ||
7ee38065 | 6654 | memcpy (&psinfo, note->descdata, sizeof (psinfo)); |
252b5132 | 6655 | |
4a938328 | 6656 | elf_tdata (abfd)->core_program |
936e320b AM |
6657 | = _bfd_elfcore_strndup (abfd, psinfo.pr_fname, |
6658 | sizeof (psinfo.pr_fname)); | |
4a938328 MS |
6659 | |
6660 | elf_tdata (abfd)->core_command | |
936e320b AM |
6661 | = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs, |
6662 | sizeof (psinfo.pr_psargs)); | |
4a938328 MS |
6663 | } |
6664 | #endif | |
6665 | ||
6666 | else | |
6667 | { | |
6668 | /* Fail - we don't know how to handle any other | |
6669 | note size (ie. data object type). */ | |
b34976b6 | 6670 | return TRUE; |
4a938328 | 6671 | } |
252b5132 RH |
6672 | |
6673 | /* Note that for some reason, a spurious space is tacked | |
6674 | onto the end of the args in some (at least one anyway) | |
c044fabd | 6675 | implementations, so strip it off if it exists. */ |
252b5132 RH |
6676 | |
6677 | { | |
c044fabd | 6678 | char *command = elf_tdata (abfd)->core_command; |
252b5132 RH |
6679 | int n = strlen (command); |
6680 | ||
6681 | if (0 < n && command[n - 1] == ' ') | |
6682 | command[n - 1] = '\0'; | |
6683 | } | |
6684 | ||
b34976b6 | 6685 | return TRUE; |
252b5132 RH |
6686 | } |
6687 | #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ | |
6688 | ||
252b5132 | 6689 | #if defined (HAVE_PSTATUS_T) |
b34976b6 | 6690 | static bfd_boolean |
217aa764 | 6691 | elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6692 | { |
f572a39d AM |
6693 | if (note->descsz == sizeof (pstatus_t) |
6694 | #if defined (HAVE_PXSTATUS_T) | |
6695 | || note->descsz == sizeof (pxstatus_t) | |
6696 | #endif | |
6697 | ) | |
4a938328 MS |
6698 | { |
6699 | pstatus_t pstat; | |
252b5132 | 6700 | |
4a938328 | 6701 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 6702 | |
4a938328 MS |
6703 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
6704 | } | |
7ee38065 | 6705 | #if defined (HAVE_PSTATUS32_T) |
4a938328 MS |
6706 | else if (note->descsz == sizeof (pstatus32_t)) |
6707 | { | |
6708 | /* 64-bit host, 32-bit corefile */ | |
6709 | pstatus32_t pstat; | |
252b5132 | 6710 | |
4a938328 | 6711 | memcpy (&pstat, note->descdata, sizeof (pstat)); |
252b5132 | 6712 | |
4a938328 MS |
6713 | elf_tdata (abfd)->core_pid = pstat.pr_pid; |
6714 | } | |
6715 | #endif | |
252b5132 RH |
6716 | /* Could grab some more details from the "representative" |
6717 | lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an | |
c044fabd | 6718 | NT_LWPSTATUS note, presumably. */ |
252b5132 | 6719 | |
b34976b6 | 6720 | return TRUE; |
252b5132 RH |
6721 | } |
6722 | #endif /* defined (HAVE_PSTATUS_T) */ | |
6723 | ||
252b5132 | 6724 | #if defined (HAVE_LWPSTATUS_T) |
b34976b6 | 6725 | static bfd_boolean |
217aa764 | 6726 | elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) |
252b5132 RH |
6727 | { |
6728 | lwpstatus_t lwpstat; | |
6729 | char buf[100]; | |
c044fabd | 6730 | char *name; |
d4c88bbb | 6731 | size_t len; |
c044fabd | 6732 | asection *sect; |
252b5132 | 6733 | |
f572a39d AM |
6734 | if (note->descsz != sizeof (lwpstat) |
6735 | #if defined (HAVE_LWPXSTATUS_T) | |
6736 | && note->descsz != sizeof (lwpxstatus_t) | |
6737 | #endif | |
6738 | ) | |
b34976b6 | 6739 | return TRUE; |
252b5132 RH |
6740 | |
6741 | memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); | |
6742 | ||
6743 | elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid; | |
6744 | elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; | |
6745 | ||
c044fabd | 6746 | /* Make a ".reg/999" section. */ |
252b5132 RH |
6747 | |
6748 | sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 6749 | len = strlen (buf) + 1; |
217aa764 | 6750 | name = bfd_alloc (abfd, len); |
252b5132 | 6751 | if (name == NULL) |
b34976b6 | 6752 | return FALSE; |
d4c88bbb | 6753 | memcpy (name, buf, len); |
252b5132 | 6754 | |
62f3bb11 | 6755 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 6756 | if (sect == NULL) |
b34976b6 | 6757 | return FALSE; |
252b5132 RH |
6758 | |
6759 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
6760 | sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.gregs); | |
6761 | sect->filepos = note->descpos | |
6762 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs); | |
6763 | #endif | |
6764 | ||
6765 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
6766 | sect->_raw_size = sizeof (lwpstat.pr_reg); | |
6767 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); | |
6768 | #endif | |
6769 | ||
6770 | sect->flags = SEC_HAS_CONTENTS; | |
6771 | sect->alignment_power = 2; | |
6772 | ||
6773 | if (!elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 6774 | return FALSE; |
252b5132 RH |
6775 | |
6776 | /* Make a ".reg2/999" section */ | |
6777 | ||
6778 | sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); | |
d4c88bbb | 6779 | len = strlen (buf) + 1; |
217aa764 | 6780 | name = bfd_alloc (abfd, len); |
252b5132 | 6781 | if (name == NULL) |
b34976b6 | 6782 | return FALSE; |
d4c88bbb | 6783 | memcpy (name, buf, len); |
252b5132 | 6784 | |
62f3bb11 | 6785 | sect = bfd_make_section_anyway (abfd, name); |
252b5132 | 6786 | if (sect == NULL) |
b34976b6 | 6787 | return FALSE; |
252b5132 RH |
6788 | |
6789 | #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
6790 | sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs); | |
6791 | sect->filepos = note->descpos | |
6792 | + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs); | |
6793 | #endif | |
6794 | ||
6795 | #if defined (HAVE_LWPSTATUS_T_PR_FPREG) | |
6796 | sect->_raw_size = sizeof (lwpstat.pr_fpreg); | |
6797 | sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); | |
6798 | #endif | |
6799 | ||
6800 | sect->flags = SEC_HAS_CONTENTS; | |
6801 | sect->alignment_power = 2; | |
6802 | ||
936e320b | 6803 | return elfcore_maybe_make_sect (abfd, ".reg2", sect); |
252b5132 RH |
6804 | } |
6805 | #endif /* defined (HAVE_LWPSTATUS_T) */ | |
6806 | ||
16e9c715 | 6807 | #if defined (HAVE_WIN32_PSTATUS_T) |
b34976b6 | 6808 | static bfd_boolean |
217aa764 | 6809 | elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) |
16e9c715 NC |
6810 | { |
6811 | char buf[30]; | |
c044fabd | 6812 | char *name; |
d4c88bbb | 6813 | size_t len; |
c044fabd | 6814 | asection *sect; |
16e9c715 NC |
6815 | win32_pstatus_t pstatus; |
6816 | ||
6817 | if (note->descsz < sizeof (pstatus)) | |
b34976b6 | 6818 | return TRUE; |
16e9c715 | 6819 | |
e8eab623 | 6820 | memcpy (&pstatus, note->descdata, sizeof (pstatus)); |
c044fabd KH |
6821 | |
6822 | switch (pstatus.data_type) | |
16e9c715 NC |
6823 | { |
6824 | case NOTE_INFO_PROCESS: | |
6825 | /* FIXME: need to add ->core_command. */ | |
6826 | elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; | |
6827 | elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; | |
c044fabd | 6828 | break; |
16e9c715 NC |
6829 | |
6830 | case NOTE_INFO_THREAD: | |
6831 | /* Make a ".reg/999" section. */ | |
6832 | sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid); | |
c044fabd | 6833 | |
d4c88bbb | 6834 | len = strlen (buf) + 1; |
217aa764 | 6835 | name = bfd_alloc (abfd, len); |
16e9c715 | 6836 | if (name == NULL) |
b34976b6 | 6837 | return FALSE; |
c044fabd | 6838 | |
d4c88bbb | 6839 | memcpy (name, buf, len); |
16e9c715 | 6840 | |
62f3bb11 | 6841 | sect = bfd_make_section_anyway (abfd, name); |
16e9c715 | 6842 | if (sect == NULL) |
b34976b6 | 6843 | return FALSE; |
c044fabd | 6844 | |
16e9c715 | 6845 | sect->_raw_size = sizeof (pstatus.data.thread_info.thread_context); |
079e9a2f AM |
6846 | sect->filepos = (note->descpos |
6847 | + offsetof (struct win32_pstatus, | |
6848 | data.thread_info.thread_context)); | |
16e9c715 NC |
6849 | sect->flags = SEC_HAS_CONTENTS; |
6850 | sect->alignment_power = 2; | |
6851 | ||
6852 | if (pstatus.data.thread_info.is_active_thread) | |
6853 | if (! elfcore_maybe_make_sect (abfd, ".reg", sect)) | |
b34976b6 | 6854 | return FALSE; |
16e9c715 NC |
6855 | break; |
6856 | ||
6857 | case NOTE_INFO_MODULE: | |
6858 | /* Make a ".module/xxxxxxxx" section. */ | |
c044fabd KH |
6859 | sprintf (buf, ".module/%08x", pstatus.data.module_info.base_address); |
6860 | ||
d4c88bbb | 6861 | len = strlen (buf) + 1; |
217aa764 | 6862 | name = bfd_alloc (abfd, len); |
16e9c715 | 6863 | if (name == NULL) |
b34976b6 | 6864 | return FALSE; |
c044fabd | 6865 | |
d4c88bbb | 6866 | memcpy (name, buf, len); |
252b5132 | 6867 | |
62f3bb11 | 6868 | sect = bfd_make_section_anyway (abfd, name); |
c044fabd | 6869 | |
16e9c715 | 6870 | if (sect == NULL) |
b34976b6 | 6871 | return FALSE; |
c044fabd | 6872 | |
16e9c715 NC |
6873 | sect->_raw_size = note->descsz; |
6874 | sect->filepos = note->descpos; | |
6875 | sect->flags = SEC_HAS_CONTENTS; | |
6876 | sect->alignment_power = 2; | |
6877 | break; | |
6878 | ||
6879 | default: | |
b34976b6 | 6880 | return TRUE; |
16e9c715 NC |
6881 | } |
6882 | ||
b34976b6 | 6883 | return TRUE; |
16e9c715 NC |
6884 | } |
6885 | #endif /* HAVE_WIN32_PSTATUS_T */ | |
252b5132 | 6886 | |
b34976b6 | 6887 | static bfd_boolean |
217aa764 | 6888 | elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) |
252b5132 | 6889 | { |
9c5bfbb7 | 6890 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
bb0082d6 | 6891 | |
252b5132 RH |
6892 | switch (note->type) |
6893 | { | |
6894 | default: | |
b34976b6 | 6895 | return TRUE; |
252b5132 | 6896 | |
252b5132 | 6897 | case NT_PRSTATUS: |
bb0082d6 AM |
6898 | if (bed->elf_backend_grok_prstatus) |
6899 | if ((*bed->elf_backend_grok_prstatus) (abfd, note)) | |
b34976b6 | 6900 | return TRUE; |
bb0082d6 | 6901 | #if defined (HAVE_PRSTATUS_T) |
252b5132 | 6902 | return elfcore_grok_prstatus (abfd, note); |
bb0082d6 | 6903 | #else |
b34976b6 | 6904 | return TRUE; |
252b5132 RH |
6905 | #endif |
6906 | ||
6907 | #if defined (HAVE_PSTATUS_T) | |
6908 | case NT_PSTATUS: | |
6909 | return elfcore_grok_pstatus (abfd, note); | |
6910 | #endif | |
6911 | ||
6912 | #if defined (HAVE_LWPSTATUS_T) | |
6913 | case NT_LWPSTATUS: | |
6914 | return elfcore_grok_lwpstatus (abfd, note); | |
6915 | #endif | |
6916 | ||
6917 | case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */ | |
6918 | return elfcore_grok_prfpreg (abfd, note); | |
6919 | ||
16e9c715 | 6920 | #if defined (HAVE_WIN32_PSTATUS_T) |
c044fabd | 6921 | case NT_WIN32PSTATUS: |
16e9c715 NC |
6922 | return elfcore_grok_win32pstatus (abfd, note); |
6923 | #endif | |
6924 | ||
c044fabd | 6925 | case NT_PRXFPREG: /* Linux SSE extension */ |
e377ab71 MK |
6926 | if (note->namesz == 6 |
6927 | && strcmp (note->namedata, "LINUX") == 0) | |
ff08c6bb JB |
6928 | return elfcore_grok_prxfpreg (abfd, note); |
6929 | else | |
b34976b6 | 6930 | return TRUE; |
ff08c6bb | 6931 | |
252b5132 RH |
6932 | case NT_PRPSINFO: |
6933 | case NT_PSINFO: | |
bb0082d6 AM |
6934 | if (bed->elf_backend_grok_psinfo) |
6935 | if ((*bed->elf_backend_grok_psinfo) (abfd, note)) | |
b34976b6 | 6936 | return TRUE; |
bb0082d6 | 6937 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) |
252b5132 | 6938 | return elfcore_grok_psinfo (abfd, note); |
bb0082d6 | 6939 | #else |
b34976b6 | 6940 | return TRUE; |
252b5132 | 6941 | #endif |
3333a7c3 RM |
6942 | |
6943 | case NT_AUXV: | |
6944 | { | |
62f3bb11 | 6945 | asection *sect = bfd_make_section_anyway (abfd, ".auxv"); |
3333a7c3 RM |
6946 | |
6947 | if (sect == NULL) | |
6948 | return FALSE; | |
6949 | sect->_raw_size = note->descsz; | |
6950 | sect->filepos = note->descpos; | |
6951 | sect->flags = SEC_HAS_CONTENTS; | |
6952 | sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32; | |
6953 | ||
6954 | return TRUE; | |
6955 | } | |
252b5132 RH |
6956 | } |
6957 | } | |
6958 | ||
b34976b6 | 6959 | static bfd_boolean |
217aa764 | 6960 | elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp) |
50b2bdb7 AM |
6961 | { |
6962 | char *cp; | |
6963 | ||
6964 | cp = strchr (note->namedata, '@'); | |
6965 | if (cp != NULL) | |
6966 | { | |
d2b64500 | 6967 | *lwpidp = atoi(cp + 1); |
b34976b6 | 6968 | return TRUE; |
50b2bdb7 | 6969 | } |
b34976b6 | 6970 | return FALSE; |
50b2bdb7 AM |
6971 | } |
6972 | ||
b34976b6 | 6973 | static bfd_boolean |
217aa764 | 6974 | elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
6975 | { |
6976 | ||
6977 | /* Signal number at offset 0x08. */ | |
6978 | elf_tdata (abfd)->core_signal | |
6979 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08); | |
6980 | ||
6981 | /* Process ID at offset 0x50. */ | |
6982 | elf_tdata (abfd)->core_pid | |
6983 | = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50); | |
6984 | ||
6985 | /* Command name at 0x7c (max 32 bytes, including nul). */ | |
6986 | elf_tdata (abfd)->core_command | |
6987 | = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31); | |
6988 | ||
7720ba9f MK |
6989 | return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo", |
6990 | note); | |
50b2bdb7 AM |
6991 | } |
6992 | ||
b34976b6 | 6993 | static bfd_boolean |
217aa764 | 6994 | elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note) |
50b2bdb7 AM |
6995 | { |
6996 | int lwp; | |
6997 | ||
6998 | if (elfcore_netbsd_get_lwpid (note, &lwp)) | |
6999 | elf_tdata (abfd)->core_lwpid = lwp; | |
7000 | ||
b4db1224 | 7001 | if (note->type == NT_NETBSDCORE_PROCINFO) |
50b2bdb7 AM |
7002 | { |
7003 | /* NetBSD-specific core "procinfo". Note that we expect to | |
7004 | find this note before any of the others, which is fine, | |
7005 | since the kernel writes this note out first when it | |
7006 | creates a core file. */ | |
47d9a591 | 7007 | |
50b2bdb7 AM |
7008 | return elfcore_grok_netbsd_procinfo (abfd, note); |
7009 | } | |
7010 | ||
b4db1224 JT |
7011 | /* As of Jan 2002 there are no other machine-independent notes |
7012 | defined for NetBSD core files. If the note type is less | |
7013 | than the start of the machine-dependent note types, we don't | |
7014 | understand it. */ | |
47d9a591 | 7015 | |
b4db1224 | 7016 | if (note->type < NT_NETBSDCORE_FIRSTMACH) |
b34976b6 | 7017 | return TRUE; |
50b2bdb7 AM |
7018 | |
7019 | ||
7020 | switch (bfd_get_arch (abfd)) | |
7021 | { | |
7022 | /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and | |
7023 | PT_GETFPREGS == mach+2. */ | |
7024 | ||
7025 | case bfd_arch_alpha: | |
7026 | case bfd_arch_sparc: | |
7027 | switch (note->type) | |
7028 | { | |
b4db1224 | 7029 | case NT_NETBSDCORE_FIRSTMACH+0: |
50b2bdb7 AM |
7030 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7031 | ||
b4db1224 | 7032 | case NT_NETBSDCORE_FIRSTMACH+2: |
50b2bdb7 AM |
7033 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7034 | ||
7035 | default: | |
b34976b6 | 7036 | return TRUE; |
50b2bdb7 AM |
7037 | } |
7038 | ||
7039 | /* On all other arch's, PT_GETREGS == mach+1 and | |
7040 | PT_GETFPREGS == mach+3. */ | |
7041 | ||
7042 | default: | |
7043 | switch (note->type) | |
7044 | { | |
b4db1224 | 7045 | case NT_NETBSDCORE_FIRSTMACH+1: |
50b2bdb7 AM |
7046 | return elfcore_make_note_pseudosection (abfd, ".reg", note); |
7047 | ||
b4db1224 | 7048 | case NT_NETBSDCORE_FIRSTMACH+3: |
50b2bdb7 AM |
7049 | return elfcore_make_note_pseudosection (abfd, ".reg2", note); |
7050 | ||
7051 | default: | |
b34976b6 | 7052 | return TRUE; |
50b2bdb7 AM |
7053 | } |
7054 | } | |
7055 | /* NOTREACHED */ | |
7056 | } | |
7057 | ||
07c6e936 | 7058 | static bfd_boolean |
217aa764 | 7059 | elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid) |
07c6e936 NC |
7060 | { |
7061 | void *ddata = note->descdata; | |
7062 | char buf[100]; | |
7063 | char *name; | |
7064 | asection *sect; | |
f8843e87 AM |
7065 | short sig; |
7066 | unsigned flags; | |
07c6e936 NC |
7067 | |
7068 | /* nto_procfs_status 'pid' field is at offset 0. */ | |
7069 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata); | |
7070 | ||
f8843e87 AM |
7071 | /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */ |
7072 | *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4); | |
7073 | ||
7074 | /* nto_procfs_status 'flags' field is at offset 8. */ | |
7075 | flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8); | |
07c6e936 NC |
7076 | |
7077 | /* nto_procfs_status 'what' field is at offset 14. */ | |
f8843e87 AM |
7078 | if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0) |
7079 | { | |
7080 | elf_tdata (abfd)->core_signal = sig; | |
7081 | elf_tdata (abfd)->core_lwpid = *tid; | |
7082 | } | |
07c6e936 | 7083 | |
f8843e87 AM |
7084 | /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores |
7085 | do not come from signals so we make sure we set the current | |
7086 | thread just in case. */ | |
7087 | if (flags & 0x00000080) | |
7088 | elf_tdata (abfd)->core_lwpid = *tid; | |
07c6e936 NC |
7089 | |
7090 | /* Make a ".qnx_core_status/%d" section. */ | |
7091 | sprintf (buf, ".qnx_core_status/%d", *tid); | |
7092 | ||
217aa764 | 7093 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7094 | if (name == NULL) |
7095 | return FALSE; | |
7096 | strcpy (name, buf); | |
7097 | ||
62f3bb11 | 7098 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7099 | if (sect == NULL) |
7100 | return FALSE; | |
7101 | ||
7102 | sect->_raw_size = note->descsz; | |
7103 | sect->filepos = note->descpos; | |
7104 | sect->flags = SEC_HAS_CONTENTS; | |
7105 | sect->alignment_power = 2; | |
7106 | ||
7107 | return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect)); | |
7108 | } | |
7109 | ||
7110 | static bfd_boolean | |
217aa764 | 7111 | elfcore_grok_nto_gregs (bfd *abfd, Elf_Internal_Note *note, pid_t tid) |
07c6e936 NC |
7112 | { |
7113 | char buf[100]; | |
7114 | char *name; | |
7115 | asection *sect; | |
7116 | ||
7117 | /* Make a ".reg/%d" section. */ | |
7118 | sprintf (buf, ".reg/%d", tid); | |
7119 | ||
217aa764 | 7120 | name = bfd_alloc (abfd, strlen (buf) + 1); |
07c6e936 NC |
7121 | if (name == NULL) |
7122 | return FALSE; | |
7123 | strcpy (name, buf); | |
7124 | ||
62f3bb11 | 7125 | sect = bfd_make_section_anyway (abfd, name); |
07c6e936 NC |
7126 | if (sect == NULL) |
7127 | return FALSE; | |
7128 | ||
7129 | sect->_raw_size = note->descsz; | |
7130 | sect->filepos = note->descpos; | |
7131 | sect->flags = SEC_HAS_CONTENTS; | |
7132 | sect->alignment_power = 2; | |
7133 | ||
f8843e87 AM |
7134 | /* This is the current thread. */ |
7135 | if (elf_tdata (abfd)->core_lwpid == tid) | |
7136 | return elfcore_maybe_make_sect (abfd, ".reg", sect); | |
7137 | ||
7138 | return TRUE; | |
07c6e936 NC |
7139 | } |
7140 | ||
7141 | #define BFD_QNT_CORE_INFO 7 | |
7142 | #define BFD_QNT_CORE_STATUS 8 | |
7143 | #define BFD_QNT_CORE_GREG 9 | |
7144 | #define BFD_QNT_CORE_FPREG 10 | |
7145 | ||
7146 | static bfd_boolean | |
217aa764 | 7147 | elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note) |
07c6e936 NC |
7148 | { |
7149 | /* Every GREG section has a STATUS section before it. Store the | |
811072d8 | 7150 | tid from the previous call to pass down to the next gregs |
07c6e936 NC |
7151 | function. */ |
7152 | static pid_t tid = 1; | |
7153 | ||
7154 | switch (note->type) | |
7155 | { | |
7156 | case BFD_QNT_CORE_INFO: return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note); | |
7157 | case BFD_QNT_CORE_STATUS: return elfcore_grok_nto_status (abfd, note, &tid); | |
7158 | case BFD_QNT_CORE_GREG: return elfcore_grok_nto_gregs (abfd, note, tid); | |
7159 | case BFD_QNT_CORE_FPREG: return elfcore_grok_prfpreg (abfd, note); | |
7160 | default: return TRUE; | |
7161 | } | |
7162 | } | |
7163 | ||
7c76fa91 MS |
7164 | /* Function: elfcore_write_note |
7165 | ||
47d9a591 | 7166 | Inputs: |
7c76fa91 MS |
7167 | buffer to hold note |
7168 | name of note | |
7169 | type of note | |
7170 | data for note | |
7171 | size of data for note | |
7172 | ||
7173 | Return: | |
7174 | End of buffer containing note. */ | |
7175 | ||
7176 | char * | |
217aa764 AM |
7177 | elfcore_write_note (bfd *abfd, |
7178 | char *buf, | |
7179 | int *bufsiz, | |
7180 | const char *name, | |
7181 | int type, | |
7182 | const void *input, | |
7183 | int size) | |
7c76fa91 MS |
7184 | { |
7185 | Elf_External_Note *xnp; | |
d4c88bbb AM |
7186 | size_t namesz; |
7187 | size_t pad; | |
7188 | size_t newspace; | |
7c76fa91 MS |
7189 | char *p, *dest; |
7190 | ||
d4c88bbb AM |
7191 | namesz = 0; |
7192 | pad = 0; | |
7193 | if (name != NULL) | |
7194 | { | |
9c5bfbb7 | 7195 | const struct elf_backend_data *bed; |
d4c88bbb AM |
7196 | |
7197 | namesz = strlen (name) + 1; | |
7198 | bed = get_elf_backend_data (abfd); | |
45d6a902 | 7199 | pad = -namesz & ((1 << bed->s->log_file_align) - 1); |
d4c88bbb AM |
7200 | } |
7201 | ||
5de3bf90 | 7202 | newspace = 12 + namesz + pad + size; |
d4c88bbb | 7203 | |
7c76fa91 MS |
7204 | p = realloc (buf, *bufsiz + newspace); |
7205 | dest = p + *bufsiz; | |
7206 | *bufsiz += newspace; | |
7207 | xnp = (Elf_External_Note *) dest; | |
7208 | H_PUT_32 (abfd, namesz, xnp->namesz); | |
7209 | H_PUT_32 (abfd, size, xnp->descsz); | |
7210 | H_PUT_32 (abfd, type, xnp->type); | |
d4c88bbb AM |
7211 | dest = xnp->name; |
7212 | if (name != NULL) | |
7213 | { | |
7214 | memcpy (dest, name, namesz); | |
7215 | dest += namesz; | |
7216 | while (pad != 0) | |
7217 | { | |
7218 | *dest++ = '\0'; | |
7219 | --pad; | |
7220 | } | |
7221 | } | |
7222 | memcpy (dest, input, size); | |
7c76fa91 MS |
7223 | return p; |
7224 | } | |
7225 | ||
7226 | #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) | |
7227 | char * | |
217aa764 AM |
7228 | elfcore_write_prpsinfo (bfd *abfd, |
7229 | char *buf, | |
7230 | int *bufsiz, | |
7231 | const char *fname, | |
7232 | const char *psargs) | |
7c76fa91 MS |
7233 | { |
7234 | int note_type; | |
7235 | char *note_name = "CORE"; | |
7236 | ||
7237 | #if defined (HAVE_PSINFO_T) | |
7238 | psinfo_t data; | |
7239 | note_type = NT_PSINFO; | |
7240 | #else | |
7241 | prpsinfo_t data; | |
7242 | note_type = NT_PRPSINFO; | |
7243 | #endif | |
7244 | ||
7245 | memset (&data, 0, sizeof (data)); | |
7246 | strncpy (data.pr_fname, fname, sizeof (data.pr_fname)); | |
7247 | strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs)); | |
47d9a591 | 7248 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7249 | note_name, note_type, &data, sizeof (data)); |
7250 | } | |
7251 | #endif /* PSINFO_T or PRPSINFO_T */ | |
7252 | ||
7253 | #if defined (HAVE_PRSTATUS_T) | |
7254 | char * | |
217aa764 AM |
7255 | elfcore_write_prstatus (bfd *abfd, |
7256 | char *buf, | |
7257 | int *bufsiz, | |
7258 | long pid, | |
7259 | int cursig, | |
7260 | const void *gregs) | |
7c76fa91 MS |
7261 | { |
7262 | prstatus_t prstat; | |
7263 | char *note_name = "CORE"; | |
7264 | ||
7265 | memset (&prstat, 0, sizeof (prstat)); | |
7266 | prstat.pr_pid = pid; | |
7267 | prstat.pr_cursig = cursig; | |
c106e334 | 7268 | memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg)); |
47d9a591 | 7269 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7270 | note_name, NT_PRSTATUS, &prstat, sizeof (prstat)); |
7271 | } | |
7272 | #endif /* HAVE_PRSTATUS_T */ | |
7273 | ||
51316059 MS |
7274 | #if defined (HAVE_LWPSTATUS_T) |
7275 | char * | |
217aa764 AM |
7276 | elfcore_write_lwpstatus (bfd *abfd, |
7277 | char *buf, | |
7278 | int *bufsiz, | |
7279 | long pid, | |
7280 | int cursig, | |
7281 | const void *gregs) | |
51316059 MS |
7282 | { |
7283 | lwpstatus_t lwpstat; | |
7284 | char *note_name = "CORE"; | |
7285 | ||
7286 | memset (&lwpstat, 0, sizeof (lwpstat)); | |
7287 | lwpstat.pr_lwpid = pid >> 16; | |
7288 | lwpstat.pr_cursig = cursig; | |
7289 | #if defined (HAVE_LWPSTATUS_T_PR_REG) | |
7290 | memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg)); | |
7291 | #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT) | |
7292 | #if !defined(gregs) | |
7293 | memcpy (lwpstat.pr_context.uc_mcontext.gregs, | |
7294 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs)); | |
7295 | #else | |
7296 | memcpy (lwpstat.pr_context.uc_mcontext.__gregs, | |
7297 | gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs)); | |
7298 | #endif | |
7299 | #endif | |
47d9a591 | 7300 | return elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7301 | NT_LWPSTATUS, &lwpstat, sizeof (lwpstat)); |
7302 | } | |
7303 | #endif /* HAVE_LWPSTATUS_T */ | |
7304 | ||
7c76fa91 MS |
7305 | #if defined (HAVE_PSTATUS_T) |
7306 | char * | |
217aa764 AM |
7307 | elfcore_write_pstatus (bfd *abfd, |
7308 | char *buf, | |
7309 | int *bufsiz, | |
7310 | long pid, | |
7311 | int cursig, | |
7312 | const void *gregs) | |
7c76fa91 MS |
7313 | { |
7314 | pstatus_t pstat; | |
7315 | char *note_name = "CORE"; | |
7316 | ||
51316059 MS |
7317 | memset (&pstat, 0, sizeof (pstat)); |
7318 | pstat.pr_pid = pid & 0xffff; | |
47d9a591 | 7319 | buf = elfcore_write_note (abfd, buf, bufsiz, note_name, |
51316059 MS |
7320 | NT_PSTATUS, &pstat, sizeof (pstat)); |
7321 | return buf; | |
7c76fa91 MS |
7322 | } |
7323 | #endif /* HAVE_PSTATUS_T */ | |
7324 | ||
7325 | char * | |
217aa764 AM |
7326 | elfcore_write_prfpreg (bfd *abfd, |
7327 | char *buf, | |
7328 | int *bufsiz, | |
7329 | const void *fpregs, | |
7330 | int size) | |
7c76fa91 MS |
7331 | { |
7332 | char *note_name = "CORE"; | |
47d9a591 | 7333 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7334 | note_name, NT_FPREGSET, fpregs, size); |
7335 | } | |
7336 | ||
7337 | char * | |
217aa764 AM |
7338 | elfcore_write_prxfpreg (bfd *abfd, |
7339 | char *buf, | |
7340 | int *bufsiz, | |
7341 | const void *xfpregs, | |
7342 | int size) | |
7c76fa91 MS |
7343 | { |
7344 | char *note_name = "LINUX"; | |
47d9a591 | 7345 | return elfcore_write_note (abfd, buf, bufsiz, |
7c76fa91 MS |
7346 | note_name, NT_PRXFPREG, xfpregs, size); |
7347 | } | |
7348 | ||
b34976b6 | 7349 | static bfd_boolean |
217aa764 | 7350 | elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size) |
252b5132 | 7351 | { |
c044fabd KH |
7352 | char *buf; |
7353 | char *p; | |
252b5132 RH |
7354 | |
7355 | if (size <= 0) | |
b34976b6 | 7356 | return TRUE; |
252b5132 | 7357 | |
dc810e39 | 7358 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
b34976b6 | 7359 | return FALSE; |
252b5132 | 7360 | |
dc810e39 | 7361 | buf = bfd_malloc (size); |
252b5132 | 7362 | if (buf == NULL) |
b34976b6 | 7363 | return FALSE; |
252b5132 | 7364 | |
dc810e39 | 7365 | if (bfd_bread (buf, size, abfd) != size) |
252b5132 RH |
7366 | { |
7367 | error: | |
7368 | free (buf); | |
b34976b6 | 7369 | return FALSE; |
252b5132 RH |
7370 | } |
7371 | ||
7372 | p = buf; | |
7373 | while (p < buf + size) | |
7374 | { | |
c044fabd KH |
7375 | /* FIXME: bad alignment assumption. */ |
7376 | Elf_External_Note *xnp = (Elf_External_Note *) p; | |
252b5132 RH |
7377 | Elf_Internal_Note in; |
7378 | ||
dc810e39 | 7379 | in.type = H_GET_32 (abfd, xnp->type); |
252b5132 | 7380 | |
dc810e39 | 7381 | in.namesz = H_GET_32 (abfd, xnp->namesz); |
252b5132 RH |
7382 | in.namedata = xnp->name; |
7383 | ||
dc810e39 | 7384 | in.descsz = H_GET_32 (abfd, xnp->descsz); |
252b5132 RH |
7385 | in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4); |
7386 | in.descpos = offset + (in.descdata - buf); | |
7387 | ||
50b2bdb7 AM |
7388 | if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0) |
7389 | { | |
7390 | if (! elfcore_grok_netbsd_note (abfd, &in)) | |
7391 | goto error; | |
7392 | } | |
07c6e936 NC |
7393 | else if (strncmp (in.namedata, "QNX", 3) == 0) |
7394 | { | |
7395 | if (! elfcore_grok_nto_note (abfd, &in)) | |
7396 | goto error; | |
7397 | } | |
50b2bdb7 AM |
7398 | else |
7399 | { | |
7400 | if (! elfcore_grok_note (abfd, &in)) | |
7401 | goto error; | |
7402 | } | |
252b5132 RH |
7403 | |
7404 | p = in.descdata + BFD_ALIGN (in.descsz, 4); | |
7405 | } | |
7406 | ||
7407 | free (buf); | |
b34976b6 | 7408 | return TRUE; |
252b5132 | 7409 | } |
98d8431c JB |
7410 | \f |
7411 | /* Providing external access to the ELF program header table. */ | |
7412 | ||
7413 | /* Return an upper bound on the number of bytes required to store a | |
7414 | copy of ABFD's program header table entries. Return -1 if an error | |
7415 | occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7416 | |
98d8431c | 7417 | long |
217aa764 | 7418 | bfd_get_elf_phdr_upper_bound (bfd *abfd) |
98d8431c JB |
7419 | { |
7420 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7421 | { | |
7422 | bfd_set_error (bfd_error_wrong_format); | |
7423 | return -1; | |
7424 | } | |
7425 | ||
936e320b | 7426 | return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr); |
98d8431c JB |
7427 | } |
7428 | ||
98d8431c JB |
7429 | /* Copy ABFD's program header table entries to *PHDRS. The entries |
7430 | will be stored as an array of Elf_Internal_Phdr structures, as | |
7431 | defined in include/elf/internal.h. To find out how large the | |
7432 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
7433 | ||
7434 | Return the number of program header table entries read, or -1 if an | |
7435 | error occurs; bfd_get_error will return an appropriate code. */ | |
c044fabd | 7436 | |
98d8431c | 7437 | int |
217aa764 | 7438 | bfd_get_elf_phdrs (bfd *abfd, void *phdrs) |
98d8431c JB |
7439 | { |
7440 | int num_phdrs; | |
7441 | ||
7442 | if (abfd->xvec->flavour != bfd_target_elf_flavour) | |
7443 | { | |
7444 | bfd_set_error (bfd_error_wrong_format); | |
7445 | return -1; | |
7446 | } | |
7447 | ||
7448 | num_phdrs = elf_elfheader (abfd)->e_phnum; | |
c044fabd | 7449 | memcpy (phdrs, elf_tdata (abfd)->phdr, |
98d8431c JB |
7450 | num_phdrs * sizeof (Elf_Internal_Phdr)); |
7451 | ||
7452 | return num_phdrs; | |
7453 | } | |
ae4221d7 L |
7454 | |
7455 | void | |
217aa764 | 7456 | _bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value) |
ae4221d7 | 7457 | { |
d3b05f8d | 7458 | #ifdef BFD64 |
ae4221d7 L |
7459 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7460 | ||
7461 | i_ehdrp = elf_elfheader (abfd); | |
7462 | if (i_ehdrp == NULL) | |
7463 | sprintf_vma (buf, value); | |
7464 | else | |
7465 | { | |
7466 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7467 | { |
ae4221d7 | 7468 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7469 | sprintf (buf, "%016lx", value); |
ae4221d7 | 7470 | #else |
cc55aec9 AM |
7471 | sprintf (buf, "%08lx%08lx", _bfd_int64_high (value), |
7472 | _bfd_int64_low (value)); | |
ae4221d7 | 7473 | #endif |
cc55aec9 | 7474 | } |
ae4221d7 L |
7475 | else |
7476 | sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff)); | |
7477 | } | |
d3b05f8d L |
7478 | #else |
7479 | sprintf_vma (buf, value); | |
7480 | #endif | |
ae4221d7 L |
7481 | } |
7482 | ||
7483 | void | |
217aa764 | 7484 | _bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value) |
ae4221d7 | 7485 | { |
d3b05f8d | 7486 | #ifdef BFD64 |
ae4221d7 L |
7487 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
7488 | ||
7489 | i_ehdrp = elf_elfheader (abfd); | |
7490 | if (i_ehdrp == NULL) | |
7491 | fprintf_vma ((FILE *) stream, value); | |
7492 | else | |
7493 | { | |
7494 | if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64) | |
cc55aec9 | 7495 | { |
ae4221d7 | 7496 | #if BFD_HOST_64BIT_LONG |
cc55aec9 | 7497 | fprintf ((FILE *) stream, "%016lx", value); |
ae4221d7 | 7498 | #else |
cc55aec9 AM |
7499 | fprintf ((FILE *) stream, "%08lx%08lx", |
7500 | _bfd_int64_high (value), _bfd_int64_low (value)); | |
ae4221d7 | 7501 | #endif |
cc55aec9 | 7502 | } |
ae4221d7 L |
7503 | else |
7504 | fprintf ((FILE *) stream, "%08lx", | |
7505 | (unsigned long) (value & 0xffffffff)); | |
7506 | } | |
d3b05f8d L |
7507 | #else |
7508 | fprintf_vma ((FILE *) stream, value); | |
7509 | #endif | |
ae4221d7 | 7510 | } |
db6751f2 JJ |
7511 | |
7512 | enum elf_reloc_type_class | |
217aa764 | 7513 | _bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED) |
db6751f2 JJ |
7514 | { |
7515 | return reloc_class_normal; | |
7516 | } | |
f8df10f4 | 7517 | |
47d9a591 | 7518 | /* For RELA architectures, return the relocation value for a |
f8df10f4 JJ |
7519 | relocation against a local symbol. */ |
7520 | ||
7521 | bfd_vma | |
217aa764 AM |
7522 | _bfd_elf_rela_local_sym (bfd *abfd, |
7523 | Elf_Internal_Sym *sym, | |
8517fae7 | 7524 | asection **psec, |
217aa764 | 7525 | Elf_Internal_Rela *rel) |
f8df10f4 | 7526 | { |
8517fae7 | 7527 | asection *sec = *psec; |
f8df10f4 JJ |
7528 | bfd_vma relocation; |
7529 | ||
7530 | relocation = (sec->output_section->vma | |
7531 | + sec->output_offset | |
7532 | + sym->st_value); | |
7533 | if ((sec->flags & SEC_MERGE) | |
c629eae0 | 7534 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 7535 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE) |
f8df10f4 | 7536 | { |
f8df10f4 | 7537 | rel->r_addend = |
8517fae7 | 7538 | _bfd_merged_section_offset (abfd, psec, |
65765700 | 7539 | elf_section_data (sec)->sec_info, |
f8df10f4 | 7540 | sym->st_value + rel->r_addend, |
8517fae7 AM |
7541 | 0); |
7542 | sec = *psec; | |
7543 | rel->r_addend -= relocation; | |
7544 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
f8df10f4 JJ |
7545 | } |
7546 | return relocation; | |
7547 | } | |
c629eae0 JJ |
7548 | |
7549 | bfd_vma | |
217aa764 AM |
7550 | _bfd_elf_rel_local_sym (bfd *abfd, |
7551 | Elf_Internal_Sym *sym, | |
7552 | asection **psec, | |
7553 | bfd_vma addend) | |
47d9a591 | 7554 | { |
c629eae0 JJ |
7555 | asection *sec = *psec; |
7556 | ||
68bfbfcc | 7557 | if (sec->sec_info_type != ELF_INFO_TYPE_MERGE) |
c629eae0 JJ |
7558 | return sym->st_value + addend; |
7559 | ||
7560 | return _bfd_merged_section_offset (abfd, psec, | |
65765700 | 7561 | elf_section_data (sec)->sec_info, |
217aa764 | 7562 | sym->st_value + addend, 0); |
c629eae0 JJ |
7563 | } |
7564 | ||
7565 | bfd_vma | |
217aa764 AM |
7566 | _bfd_elf_section_offset (bfd *abfd, |
7567 | struct bfd_link_info *info, | |
7568 | asection *sec, | |
7569 | bfd_vma offset) | |
c629eae0 JJ |
7570 | { |
7571 | struct bfd_elf_section_data *sec_data; | |
7572 | ||
7573 | sec_data = elf_section_data (sec); | |
68bfbfcc | 7574 | switch (sec->sec_info_type) |
65765700 JJ |
7575 | { |
7576 | case ELF_INFO_TYPE_STABS: | |
126495ed AM |
7577 | return _bfd_stab_section_offset (abfd, |
7578 | &elf_hash_table (info)->merge_info, | |
7579 | sec, &sec_data->sec_info, offset); | |
65765700 JJ |
7580 | case ELF_INFO_TYPE_EH_FRAME: |
7581 | return _bfd_elf_eh_frame_section_offset (abfd, sec, offset); | |
7582 | default: | |
7583 | return offset; | |
7584 | } | |
c629eae0 | 7585 | } |
3333a7c3 RM |
7586 | \f |
7587 | /* Create a new BFD as if by bfd_openr. Rather than opening a file, | |
7588 | reconstruct an ELF file by reading the segments out of remote memory | |
7589 | based on the ELF file header at EHDR_VMA and the ELF program headers it | |
7590 | points to. If not null, *LOADBASEP is filled in with the difference | |
7591 | between the VMAs from which the segments were read, and the VMAs the | |
7592 | file headers (and hence BFD's idea of each section's VMA) put them at. | |
7593 | ||
7594 | The function TARGET_READ_MEMORY is called to copy LEN bytes from the | |
7595 | remote memory at target address VMA into the local buffer at MYADDR; it | |
7596 | should return zero on success or an `errno' code on failure. TEMPL must | |
7597 | be a BFD for an ELF target with the word size and byte order found in | |
7598 | the remote memory. */ | |
7599 | ||
7600 | bfd * | |
217aa764 AM |
7601 | bfd_elf_bfd_from_remote_memory |
7602 | (bfd *templ, | |
7603 | bfd_vma ehdr_vma, | |
7604 | bfd_vma *loadbasep, | |
7605 | int (*target_read_memory) (bfd_vma, char *, int)) | |
3333a7c3 RM |
7606 | { |
7607 | return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory) | |
7608 | (templ, ehdr_vma, loadbasep, target_read_memory); | |
7609 | } | |
4c45e5c9 JJ |
7610 | \f |
7611 | long | |
7612 | _bfd_elf_get_synthetic_symtab (bfd *abfd, asymbol **dynsyms, asymbol **ret) | |
7613 | { | |
7614 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
7615 | asection *relplt; | |
7616 | asymbol *s; | |
7617 | const char *relplt_name; | |
7618 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
7619 | arelent *p; | |
7620 | long count, i, n; | |
7621 | size_t size; | |
7622 | Elf_Internal_Shdr *hdr; | |
7623 | char *names; | |
7624 | asection *plt; | |
7625 | ||
7626 | *ret = NULL; | |
7627 | if (!bed->plt_sym_val) | |
7628 | return 0; | |
7629 | ||
7630 | relplt_name = bed->relplt_name; | |
7631 | if (relplt_name == NULL) | |
7632 | relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"; | |
7633 | relplt = bfd_get_section_by_name (abfd, relplt_name); | |
7634 | if (relplt == NULL) | |
7635 | return 0; | |
7636 | ||
7637 | hdr = &elf_section_data (relplt)->this_hdr; | |
7638 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
7639 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
7640 | return 0; | |
7641 | ||
7642 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
7643 | if (plt == NULL) | |
7644 | return 0; | |
7645 | ||
7646 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
7647 | if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE)) | |
7648 | return -1; | |
7649 | ||
7650 | count = relplt->_raw_size / hdr->sh_entsize; | |
7651 | size = count * sizeof (asymbol); | |
7652 | p = relplt->relocation; | |
7653 | for (i = 0; i < count; i++, s++, p++) | |
7654 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
7655 | ||
7656 | s = *ret = bfd_malloc (size); | |
7657 | if (s == NULL) | |
7658 | return -1; | |
7659 | ||
7660 | names = (char *) (s + count); | |
7661 | p = relplt->relocation; | |
7662 | n = 0; | |
7663 | for (i = 0; i < count; i++, s++, p++) | |
7664 | { | |
7665 | size_t len; | |
7666 | bfd_vma addr; | |
7667 | ||
7668 | addr = bed->plt_sym_val (i, plt, p); | |
7669 | if (addr == (bfd_vma) -1) | |
7670 | continue; | |
7671 | ||
7672 | *s = **p->sym_ptr_ptr; | |
7673 | s->section = plt; | |
7674 | s->value = addr - plt->vma; | |
7675 | s->name = names; | |
7676 | len = strlen ((*p->sym_ptr_ptr)->name); | |
7677 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
7678 | names += len; | |
7679 | memcpy (names, "@plt", sizeof ("@plt")); | |
7680 | names += sizeof ("@plt"); | |
7681 | ++n; | |
7682 | } | |
7683 | ||
7684 | return n; | |
7685 | } |