Commit | Line | Data |
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32090b8e | 1 | /* ELF executable support for BFD. |
f6727b90 | 2 | Copyright 1993, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. |
32090b8e KR |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
6f904fce | 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
32090b8e | 19 | |
d1b44e83 ILT |
20 | /* |
21 | ||
22 | SECTION | |
23 | ELF backends | |
24 | ||
25 | BFD support for ELF formats is being worked on. | |
26 | Currently, the best supported back ends are for sparc and i386 | |
27 | (running svr4 or Solaris 2). | |
28 | ||
29 | Documentation of the internals of the support code still needs | |
30 | to be written. The code is changing quickly enough that we | |
31 | haven't bothered yet. | |
32 | */ | |
33 | ||
32090b8e KR |
34 | #include "bfd.h" |
35 | #include "sysdep.h" | |
013dec1a | 36 | #include "bfdlink.h" |
32090b8e KR |
37 | #include "libbfd.h" |
38 | #define ARCH_SIZE 0 | |
6ab826bd | 39 | #include "elf-bfd.h" |
32090b8e | 40 | |
fd0198f0 | 41 | static INLINE struct elf_segment_map *make_mapping |
edf3fe48 | 42 | PARAMS ((bfd *, asection **, unsigned int, unsigned int, boolean)); |
191d910c | 43 | static boolean map_sections_to_segments PARAMS ((bfd *)); |
fd0198f0 ILT |
44 | static int elf_sort_sections PARAMS ((const PTR, const PTR)); |
45 | static boolean assign_file_positions_for_segments PARAMS ((bfd *)); | |
46 | static boolean assign_file_positions_except_relocs PARAMS ((bfd *)); | |
ede4eed4 | 47 | static boolean prep_headers PARAMS ((bfd *)); |
37fcafe6 | 48 | static boolean swap_out_syms PARAMS ((bfd *, struct bfd_strtab_hash **, int)); |
3dbf33ee | 49 | static boolean copy_private_bfd_data PARAMS ((bfd *, bfd *)); |
ea3f0585 FF |
50 | static char *elf_read PARAMS ((bfd *, long, unsigned int)); |
51 | static void elf_fake_sections PARAMS ((bfd *, asection *, PTR)); | |
52 | static boolean assign_section_numbers PARAMS ((bfd *)); | |
53 | static INLINE int sym_is_global PARAMS ((bfd *, asymbol *)); | |
54 | static boolean elf_map_symbols PARAMS ((bfd *)); | |
55 | static bfd_size_type get_program_header_size PARAMS ((bfd *)); | |
ede4eed4 | 56 | |
a66a61a0 ILT |
57 | /* Swap version information in and out. The version information is |
58 | currently size independent. If that ever changes, this code will | |
59 | need to move into elfcode.h. */ | |
60 | ||
61 | /* Swap in a Verdef structure. */ | |
62 | ||
63 | void | |
64 | _bfd_elf_swap_verdef_in (abfd, src, dst) | |
65 | bfd *abfd; | |
66 | const Elf_External_Verdef *src; | |
67 | Elf_Internal_Verdef *dst; | |
68 | { | |
69 | dst->vd_version = bfd_h_get_16 (abfd, src->vd_version); | |
70 | dst->vd_flags = bfd_h_get_16 (abfd, src->vd_flags); | |
71 | dst->vd_ndx = bfd_h_get_16 (abfd, src->vd_ndx); | |
72 | dst->vd_cnt = bfd_h_get_16 (abfd, src->vd_cnt); | |
73 | dst->vd_hash = bfd_h_get_32 (abfd, src->vd_hash); | |
74 | dst->vd_aux = bfd_h_get_32 (abfd, src->vd_aux); | |
75 | dst->vd_next = bfd_h_get_32 (abfd, src->vd_next); | |
76 | } | |
77 | ||
78 | /* Swap out a Verdef structure. */ | |
79 | ||
80 | void | |
81 | _bfd_elf_swap_verdef_out (abfd, src, dst) | |
82 | bfd *abfd; | |
83 | const Elf_Internal_Verdef *src; | |
84 | Elf_External_Verdef *dst; | |
85 | { | |
86 | bfd_h_put_16 (abfd, src->vd_version, dst->vd_version); | |
87 | bfd_h_put_16 (abfd, src->vd_flags, dst->vd_flags); | |
88 | bfd_h_put_16 (abfd, src->vd_ndx, dst->vd_ndx); | |
89 | bfd_h_put_16 (abfd, src->vd_cnt, dst->vd_cnt); | |
90 | bfd_h_put_32 (abfd, src->vd_hash, dst->vd_hash); | |
91 | bfd_h_put_32 (abfd, src->vd_aux, dst->vd_aux); | |
92 | bfd_h_put_32 (abfd, src->vd_next, dst->vd_next); | |
93 | } | |
94 | ||
95 | /* Swap in a Verdaux structure. */ | |
96 | ||
97 | void | |
98 | _bfd_elf_swap_verdaux_in (abfd, src, dst) | |
99 | bfd *abfd; | |
100 | const Elf_External_Verdaux *src; | |
101 | Elf_Internal_Verdaux *dst; | |
102 | { | |
103 | dst->vda_name = bfd_h_get_32 (abfd, src->vda_name); | |
104 | dst->vda_next = bfd_h_get_32 (abfd, src->vda_next); | |
105 | } | |
106 | ||
107 | /* Swap out a Verdaux structure. */ | |
108 | ||
109 | void | |
110 | _bfd_elf_swap_verdaux_out (abfd, src, dst) | |
111 | bfd *abfd; | |
112 | const Elf_Internal_Verdaux *src; | |
113 | Elf_External_Verdaux *dst; | |
114 | { | |
115 | bfd_h_put_32 (abfd, src->vda_name, dst->vda_name); | |
116 | bfd_h_put_32 (abfd, src->vda_next, dst->vda_next); | |
117 | } | |
118 | ||
119 | /* Swap in a Verneed structure. */ | |
120 | ||
121 | void | |
122 | _bfd_elf_swap_verneed_in (abfd, src, dst) | |
123 | bfd *abfd; | |
124 | const Elf_External_Verneed *src; | |
125 | Elf_Internal_Verneed *dst; | |
126 | { | |
127 | dst->vn_version = bfd_h_get_16 (abfd, src->vn_version); | |
128 | dst->vn_cnt = bfd_h_get_16 (abfd, src->vn_cnt); | |
129 | dst->vn_file = bfd_h_get_32 (abfd, src->vn_file); | |
130 | dst->vn_aux = bfd_h_get_32 (abfd, src->vn_aux); | |
131 | dst->vn_next = bfd_h_get_32 (abfd, src->vn_next); | |
132 | } | |
133 | ||
134 | /* Swap out a Verneed structure. */ | |
135 | ||
136 | void | |
137 | _bfd_elf_swap_verneed_out (abfd, src, dst) | |
138 | bfd *abfd; | |
139 | const Elf_Internal_Verneed *src; | |
140 | Elf_External_Verneed *dst; | |
141 | { | |
142 | bfd_h_put_16 (abfd, src->vn_version, dst->vn_version); | |
143 | bfd_h_put_16 (abfd, src->vn_cnt, dst->vn_cnt); | |
144 | bfd_h_put_32 (abfd, src->vn_file, dst->vn_file); | |
145 | bfd_h_put_32 (abfd, src->vn_aux, dst->vn_aux); | |
146 | bfd_h_put_32 (abfd, src->vn_next, dst->vn_next); | |
147 | } | |
148 | ||
149 | /* Swap in a Vernaux structure. */ | |
150 | ||
151 | void | |
152 | _bfd_elf_swap_vernaux_in (abfd, src, dst) | |
153 | bfd *abfd; | |
154 | const Elf_External_Vernaux *src; | |
155 | Elf_Internal_Vernaux *dst; | |
156 | { | |
157 | dst->vna_hash = bfd_h_get_32 (abfd, src->vna_hash); | |
158 | dst->vna_flags = bfd_h_get_16 (abfd, src->vna_flags); | |
159 | dst->vna_other = bfd_h_get_16 (abfd, src->vna_other); | |
160 | dst->vna_name = bfd_h_get_32 (abfd, src->vna_name); | |
161 | dst->vna_next = bfd_h_get_32 (abfd, src->vna_next); | |
162 | } | |
163 | ||
164 | /* Swap out a Vernaux structure. */ | |
165 | ||
166 | void | |
167 | _bfd_elf_swap_vernaux_out (abfd, src, dst) | |
168 | bfd *abfd; | |
169 | const Elf_Internal_Vernaux *src; | |
170 | Elf_External_Vernaux *dst; | |
171 | { | |
172 | bfd_h_put_32 (abfd, src->vna_hash, dst->vna_hash); | |
173 | bfd_h_put_16 (abfd, src->vna_flags, dst->vna_flags); | |
174 | bfd_h_put_16 (abfd, src->vna_other, dst->vna_other); | |
175 | bfd_h_put_32 (abfd, src->vna_name, dst->vna_name); | |
176 | bfd_h_put_32 (abfd, src->vna_next, dst->vna_next); | |
177 | } | |
178 | ||
179 | /* Swap in a Versym structure. */ | |
180 | ||
181 | void | |
182 | _bfd_elf_swap_versym_in (abfd, src, dst) | |
183 | bfd *abfd; | |
184 | const Elf_External_Versym *src; | |
185 | Elf_Internal_Versym *dst; | |
186 | { | |
187 | dst->vs_vers = bfd_h_get_16 (abfd, src->vs_vers); | |
188 | } | |
189 | ||
190 | /* Swap out a Versym structure. */ | |
191 | ||
192 | void | |
193 | _bfd_elf_swap_versym_out (abfd, src, dst) | |
194 | bfd *abfd; | |
195 | const Elf_Internal_Versym *src; | |
196 | Elf_External_Versym *dst; | |
197 | { | |
198 | bfd_h_put_16 (abfd, src->vs_vers, dst->vs_vers); | |
199 | } | |
200 | ||
32090b8e KR |
201 | /* Standard ELF hash function. Do not change this function; you will |
202 | cause invalid hash tables to be generated. (Well, you would if this | |
203 | were being used yet.) */ | |
204 | unsigned long | |
013dec1a ILT |
205 | bfd_elf_hash (name) |
206 | CONST unsigned char *name; | |
32090b8e KR |
207 | { |
208 | unsigned long h = 0; | |
209 | unsigned long g; | |
210 | int ch; | |
211 | ||
212 | while ((ch = *name++) != '\0') | |
213 | { | |
214 | h = (h << 4) + ch; | |
215 | if ((g = (h & 0xf0000000)) != 0) | |
216 | { | |
217 | h ^= g >> 24; | |
218 | h &= ~g; | |
219 | } | |
220 | } | |
221 | return h; | |
222 | } | |
223 | ||
224 | /* Read a specified number of bytes at a specified offset in an ELF | |
225 | file, into a newly allocated buffer, and return a pointer to the | |
226 | buffer. */ | |
227 | ||
228 | static char * | |
013dec1a ILT |
229 | elf_read (abfd, offset, size) |
230 | bfd * abfd; | |
231 | long offset; | |
ae115e51 | 232 | unsigned int size; |
32090b8e KR |
233 | { |
234 | char *buf; | |
235 | ||
236 | if ((buf = bfd_alloc (abfd, size)) == NULL) | |
a9713b91 | 237 | return NULL; |
32090b8e | 238 | if (bfd_seek (abfd, offset, SEEK_SET) == -1) |
013dec1a | 239 | return NULL; |
32090b8e KR |
240 | if (bfd_read ((PTR) buf, size, 1, abfd) != size) |
241 | { | |
013dec1a ILT |
242 | if (bfd_get_error () != bfd_error_system_call) |
243 | bfd_set_error (bfd_error_file_truncated); | |
32090b8e KR |
244 | return NULL; |
245 | } | |
246 | return buf; | |
247 | } | |
248 | ||
249 | boolean | |
ff12f303 | 250 | bfd_elf_mkobject (abfd) |
013dec1a | 251 | bfd * abfd; |
32090b8e KR |
252 | { |
253 | /* this just does initialization */ | |
254 | /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */ | |
255 | elf_tdata (abfd) = (struct elf_obj_tdata *) | |
256 | bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)); | |
257 | if (elf_tdata (abfd) == 0) | |
a9713b91 | 258 | return false; |
32090b8e KR |
259 | /* since everything is done at close time, do we need any |
260 | initialization? */ | |
261 | ||
262 | return true; | |
263 | } | |
264 | ||
265 | char * | |
ede4eed4 | 266 | bfd_elf_get_str_section (abfd, shindex) |
013dec1a ILT |
267 | bfd * abfd; |
268 | unsigned int shindex; | |
32090b8e KR |
269 | { |
270 | Elf_Internal_Shdr **i_shdrp; | |
271 | char *shstrtab = NULL; | |
272 | unsigned int offset; | |
273 | unsigned int shstrtabsize; | |
274 | ||
275 | i_shdrp = elf_elfsections (abfd); | |
276 | if (i_shdrp == 0 || i_shdrp[shindex] == 0) | |
277 | return 0; | |
278 | ||
b176e1e9 | 279 | shstrtab = (char *) i_shdrp[shindex]->contents; |
32090b8e KR |
280 | if (shstrtab == NULL) |
281 | { | |
282 | /* No cached one, attempt to read, and cache what we read. */ | |
283 | offset = i_shdrp[shindex]->sh_offset; | |
284 | shstrtabsize = i_shdrp[shindex]->sh_size; | |
285 | shstrtab = elf_read (abfd, offset, shstrtabsize); | |
b176e1e9 | 286 | i_shdrp[shindex]->contents = (PTR) shstrtab; |
32090b8e KR |
287 | } |
288 | return shstrtab; | |
289 | } | |
290 | ||
291 | char * | |
ede4eed4 | 292 | bfd_elf_string_from_elf_section (abfd, shindex, strindex) |
013dec1a ILT |
293 | bfd * abfd; |
294 | unsigned int shindex; | |
295 | unsigned int strindex; | |
32090b8e KR |
296 | { |
297 | Elf_Internal_Shdr *hdr; | |
298 | ||
299 | if (strindex == 0) | |
300 | return ""; | |
301 | ||
302 | hdr = elf_elfsections (abfd)[shindex]; | |
303 | ||
b176e1e9 | 304 | if (hdr->contents == NULL |
ede4eed4 | 305 | && bfd_elf_get_str_section (abfd, shindex) == NULL) |
32090b8e KR |
306 | return NULL; |
307 | ||
20db2495 ILT |
308 | if (strindex >= hdr->sh_size) |
309 | { | |
310 | (*_bfd_error_handler) | |
53d3ce37 | 311 | (_("%s: invalid string offset %u >= %lu for section `%s'"), |
20db2495 ILT |
312 | bfd_get_filename (abfd), strindex, (unsigned long) hdr->sh_size, |
313 | ((shindex == elf_elfheader(abfd)->e_shstrndx | |
314 | && strindex == hdr->sh_name) | |
315 | ? ".shstrtab" | |
316 | : elf_string_from_elf_strtab (abfd, hdr->sh_name))); | |
317 | return ""; | |
318 | } | |
319 | ||
b176e1e9 | 320 | return ((char *) hdr->contents) + strindex; |
32090b8e KR |
321 | } |
322 | ||
497c5434 | 323 | /* Make a BFD section from an ELF section. We store a pointer to the |
b176e1e9 | 324 | BFD section in the bfd_section field of the header. */ |
497c5434 ILT |
325 | |
326 | boolean | |
327 | _bfd_elf_make_section_from_shdr (abfd, hdr, name) | |
328 | bfd *abfd; | |
329 | Elf_Internal_Shdr *hdr; | |
330 | const char *name; | |
331 | { | |
332 | asection *newsect; | |
333 | flagword flags; | |
334 | ||
b176e1e9 | 335 | if (hdr->bfd_section != NULL) |
497c5434 | 336 | { |
b176e1e9 ILT |
337 | BFD_ASSERT (strcmp (name, |
338 | bfd_get_section_name (abfd, hdr->bfd_section)) == 0); | |
497c5434 ILT |
339 | return true; |
340 | } | |
341 | ||
342 | newsect = bfd_make_section_anyway (abfd, name); | |
343 | if (newsect == NULL) | |
344 | return false; | |
345 | ||
346 | newsect->filepos = hdr->sh_offset; | |
347 | ||
348 | if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr) | |
349 | || ! bfd_set_section_size (abfd, newsect, hdr->sh_size) | |
350 | || ! bfd_set_section_alignment (abfd, newsect, | |
351 | bfd_log2 (hdr->sh_addralign))) | |
352 | return false; | |
353 | ||
354 | flags = SEC_NO_FLAGS; | |
355 | if (hdr->sh_type != SHT_NOBITS) | |
356 | flags |= SEC_HAS_CONTENTS; | |
357 | if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
358 | { | |
359 | flags |= SEC_ALLOC; | |
360 | if (hdr->sh_type != SHT_NOBITS) | |
361 | flags |= SEC_LOAD; | |
362 | } | |
363 | if ((hdr->sh_flags & SHF_WRITE) == 0) | |
364 | flags |= SEC_READONLY; | |
365 | if ((hdr->sh_flags & SHF_EXECINSTR) != 0) | |
366 | flags |= SEC_CODE; | |
7c6da9ca | 367 | else if ((flags & SEC_LOAD) != 0) |
497c5434 ILT |
368 | flags |= SEC_DATA; |
369 | ||
370 | /* The debugging sections appear to be recognized only by name, not | |
371 | any sort of flag. */ | |
372 | if (strncmp (name, ".debug", sizeof ".debug" - 1) == 0 | |
373 | || strncmp (name, ".line", sizeof ".line" - 1) == 0 | |
374 | || strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
375 | flags |= SEC_DEBUGGING; | |
376 | ||
f0c12b73 DE |
377 | /* As a GNU extension, if the name begins with .gnu.linkonce, we |
378 | only link a single copy of the section. This is used to support | |
379 | g++. g++ will emit each template expansion in its own section. | |
380 | The symbols will be defined as weak, so that multiple definitions | |
381 | are permitted. The GNU linker extension is to actually discard | |
382 | all but one of the sections. */ | |
383 | if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0) | |
384 | flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; | |
385 | ||
497c5434 ILT |
386 | if (! bfd_set_section_flags (abfd, newsect, flags)) |
387 | return false; | |
388 | ||
fd0198f0 ILT |
389 | if ((flags & SEC_ALLOC) != 0) |
390 | { | |
391 | Elf_Internal_Phdr *phdr; | |
392 | unsigned int i; | |
393 | ||
394 | /* Look through the phdrs to see if we need to adjust the lma. */ | |
395 | phdr = elf_tdata (abfd)->phdr; | |
396 | for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++) | |
397 | { | |
398 | if (phdr->p_type == PT_LOAD | |
6933148a | 399 | && phdr->p_paddr != 0 |
fd0198f0 ILT |
400 | && phdr->p_vaddr != phdr->p_paddr |
401 | && phdr->p_vaddr <= hdr->sh_addr | |
b944e7e8 ILT |
402 | && phdr->p_vaddr + phdr->p_memsz >= hdr->sh_addr + hdr->sh_size |
403 | && ((flags & SEC_LOAD) == 0 | |
f6727b90 | 404 | || (phdr->p_offset <= (bfd_vma) hdr->sh_offset |
b944e7e8 ILT |
405 | && (phdr->p_offset + phdr->p_filesz |
406 | >= hdr->sh_offset + hdr->sh_size)))) | |
fd0198f0 ILT |
407 | { |
408 | newsect->lma += phdr->p_paddr - phdr->p_vaddr; | |
409 | break; | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
b176e1e9 | 414 | hdr->bfd_section = newsect; |
497c5434 ILT |
415 | elf_section_data (newsect)->this_hdr = *hdr; |
416 | ||
417 | return true; | |
418 | } | |
419 | ||
32090b8e KR |
420 | /* |
421 | INTERNAL_FUNCTION | |
422 | bfd_elf_find_section | |
423 | ||
424 | SYNOPSIS | |
425 | struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); | |
426 | ||
427 | DESCRIPTION | |
428 | Helper functions for GDB to locate the string tables. | |
429 | Since BFD hides string tables from callers, GDB needs to use an | |
430 | internal hook to find them. Sun's .stabstr, in particular, | |
431 | isn't even pointed to by the .stab section, so ordinary | |
432 | mechanisms wouldn't work to find it, even if we had some. | |
433 | */ | |
434 | ||
435 | struct elf_internal_shdr * | |
013dec1a ILT |
436 | bfd_elf_find_section (abfd, name) |
437 | bfd * abfd; | |
438 | char *name; | |
32090b8e KR |
439 | { |
440 | Elf_Internal_Shdr **i_shdrp; | |
441 | char *shstrtab; | |
442 | unsigned int max; | |
443 | unsigned int i; | |
444 | ||
445 | i_shdrp = elf_elfsections (abfd); | |
446 | if (i_shdrp != NULL) | |
447 | { | |
9e7e5d5e NC |
448 | shstrtab = bfd_elf_get_str_section |
449 | (abfd, elf_elfheader (abfd)->e_shstrndx); | |
32090b8e KR |
450 | if (shstrtab != NULL) |
451 | { | |
452 | max = elf_elfheader (abfd)->e_shnum; | |
453 | for (i = 1; i < max; i++) | |
454 | if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) | |
455 | return i_shdrp[i]; | |
456 | } | |
457 | } | |
458 | return 0; | |
459 | } | |
460 | ||
32090b8e KR |
461 | const char *const bfd_elf_section_type_names[] = { |
462 | "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB", | |
463 | "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE", | |
464 | "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM", | |
465 | }; | |
466 | ||
467 | /* ELF relocs are against symbols. If we are producing relocateable | |
468 | output, and the reloc is against an external symbol, and nothing | |
469 | has given us any additional addend, the resulting reloc will also | |
470 | be against the same symbol. In such a case, we don't want to | |
471 | change anything about the way the reloc is handled, since it will | |
472 | all be done at final link time. Rather than put special case code | |
473 | into bfd_perform_relocation, all the reloc types use this howto | |
474 | function. It just short circuits the reloc if producing | |
475 | relocateable output against an external symbol. */ | |
476 | ||
013dec1a | 477 | /*ARGSUSED*/ |
32090b8e KR |
478 | bfd_reloc_status_type |
479 | bfd_elf_generic_reloc (abfd, | |
480 | reloc_entry, | |
481 | symbol, | |
482 | data, | |
483 | input_section, | |
4c3721d5 ILT |
484 | output_bfd, |
485 | error_message) | |
32090b8e KR |
486 | bfd *abfd; |
487 | arelent *reloc_entry; | |
488 | asymbol *symbol; | |
489 | PTR data; | |
490 | asection *input_section; | |
491 | bfd *output_bfd; | |
4c3721d5 | 492 | char **error_message; |
32090b8e KR |
493 | { |
494 | if (output_bfd != (bfd *) NULL | |
495 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
d1b44e83 ILT |
496 | && (! reloc_entry->howto->partial_inplace |
497 | || reloc_entry->addend == 0)) | |
32090b8e KR |
498 | { |
499 | reloc_entry->address += input_section->output_offset; | |
500 | return bfd_reloc_ok; | |
501 | } | |
502 | ||
503 | return bfd_reloc_continue; | |
504 | } | |
013dec1a | 505 | \f |
27fb8f29 ILT |
506 | /* Print out the program headers. */ |
507 | ||
508 | boolean | |
509 | _bfd_elf_print_private_bfd_data (abfd, farg) | |
510 | bfd *abfd; | |
511 | PTR farg; | |
512 | { | |
513 | FILE *f = (FILE *) farg; | |
514 | Elf_Internal_Phdr *p; | |
02fcd126 ILT |
515 | asection *s; |
516 | bfd_byte *dynbuf = NULL; | |
27fb8f29 ILT |
517 | |
518 | p = elf_tdata (abfd)->phdr; | |
02fcd126 | 519 | if (p != NULL) |
27fb8f29 | 520 | { |
02fcd126 | 521 | unsigned int i, c; |
27fb8f29 | 522 | |
53d3ce37 | 523 | fprintf (f, _("\nProgram Header:\n")); |
02fcd126 ILT |
524 | c = elf_elfheader (abfd)->e_phnum; |
525 | for (i = 0; i < c; i++, p++) | |
27fb8f29 | 526 | { |
02fcd126 ILT |
527 | const char *s; |
528 | char buf[20]; | |
529 | ||
530 | switch (p->p_type) | |
531 | { | |
532 | case PT_NULL: s = "NULL"; break; | |
533 | case PT_LOAD: s = "LOAD"; break; | |
534 | case PT_DYNAMIC: s = "DYNAMIC"; break; | |
535 | case PT_INTERP: s = "INTERP"; break; | |
536 | case PT_NOTE: s = "NOTE"; break; | |
537 | case PT_SHLIB: s = "SHLIB"; break; | |
538 | case PT_PHDR: s = "PHDR"; break; | |
539 | default: sprintf (buf, "0x%lx", p->p_type); s = buf; break; | |
540 | } | |
541 | fprintf (f, "%8s off 0x", s); | |
542 | fprintf_vma (f, p->p_offset); | |
543 | fprintf (f, " vaddr 0x"); | |
544 | fprintf_vma (f, p->p_vaddr); | |
545 | fprintf (f, " paddr 0x"); | |
546 | fprintf_vma (f, p->p_paddr); | |
547 | fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align)); | |
548 | fprintf (f, " filesz 0x"); | |
549 | fprintf_vma (f, p->p_filesz); | |
550 | fprintf (f, " memsz 0x"); | |
551 | fprintf_vma (f, p->p_memsz); | |
552 | fprintf (f, " flags %c%c%c", | |
553 | (p->p_flags & PF_R) != 0 ? 'r' : '-', | |
554 | (p->p_flags & PF_W) != 0 ? 'w' : '-', | |
555 | (p->p_flags & PF_X) != 0 ? 'x' : '-'); | |
556 | if ((p->p_flags &~ (PF_R | PF_W | PF_X)) != 0) | |
557 | fprintf (f, " %lx", p->p_flags &~ (PF_R | PF_W | PF_X)); | |
558 | fprintf (f, "\n"); | |
559 | } | |
560 | } | |
561 | ||
562 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
563 | if (s != NULL) | |
564 | { | |
565 | int elfsec; | |
566 | unsigned long link; | |
567 | bfd_byte *extdyn, *extdynend; | |
568 | size_t extdynsize; | |
569 | void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
570 | ||
53d3ce37 | 571 | fprintf (f, _("\nDynamic Section:\n")); |
02fcd126 ILT |
572 | |
573 | dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size); | |
574 | if (dynbuf == NULL) | |
575 | goto error_return; | |
576 | if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0, | |
577 | s->_raw_size)) | |
578 | goto error_return; | |
579 | ||
580 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
581 | if (elfsec == -1) | |
582 | goto error_return; | |
583 | link = elf_elfsections (abfd)[elfsec]->sh_link; | |
584 | ||
585 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
586 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
587 | ||
588 | extdyn = dynbuf; | |
589 | extdynend = extdyn + s->_raw_size; | |
590 | for (; extdyn < extdynend; extdyn += extdynsize) | |
591 | { | |
592 | Elf_Internal_Dyn dyn; | |
593 | const char *name; | |
594 | char ab[20]; | |
595 | boolean stringp; | |
596 | ||
597 | (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn); | |
598 | ||
599 | if (dyn.d_tag == DT_NULL) | |
600 | break; | |
601 | ||
602 | stringp = false; | |
603 | switch (dyn.d_tag) | |
604 | { | |
605 | default: | |
927d05b5 | 606 | sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); |
02fcd126 ILT |
607 | name = ab; |
608 | break; | |
609 | ||
610 | case DT_NEEDED: name = "NEEDED"; stringp = true; break; | |
611 | case DT_PLTRELSZ: name = "PLTRELSZ"; break; | |
612 | case DT_PLTGOT: name = "PLTGOT"; break; | |
613 | case DT_HASH: name = "HASH"; break; | |
614 | case DT_STRTAB: name = "STRTAB"; break; | |
615 | case DT_SYMTAB: name = "SYMTAB"; break; | |
616 | case DT_RELA: name = "RELA"; break; | |
617 | case DT_RELASZ: name = "RELASZ"; break; | |
618 | case DT_RELAENT: name = "RELAENT"; break; | |
619 | case DT_STRSZ: name = "STRSZ"; break; | |
620 | case DT_SYMENT: name = "SYMENT"; break; | |
621 | case DT_INIT: name = "INIT"; break; | |
622 | case DT_FINI: name = "FINI"; break; | |
623 | case DT_SONAME: name = "SONAME"; stringp = true; break; | |
624 | case DT_RPATH: name = "RPATH"; stringp = true; break; | |
625 | case DT_SYMBOLIC: name = "SYMBOLIC"; break; | |
626 | case DT_REL: name = "REL"; break; | |
627 | case DT_RELSZ: name = "RELSZ"; break; | |
628 | case DT_RELENT: name = "RELENT"; break; | |
629 | case DT_PLTREL: name = "PLTREL"; break; | |
630 | case DT_DEBUG: name = "DEBUG"; break; | |
631 | case DT_TEXTREL: name = "TEXTREL"; break; | |
632 | case DT_JMPREL: name = "JMPREL"; break; | |
148437ec ILT |
633 | case DT_AUXILIARY: name = "AUXILIARY"; stringp = true; break; |
634 | case DT_FILTER: name = "FILTER"; stringp = true; break; | |
a66a61a0 ILT |
635 | case DT_VERSYM: name = "VERSYM"; break; |
636 | case DT_VERDEF: name = "VERDEF"; break; | |
637 | case DT_VERDEFNUM: name = "VERDEFNUM"; break; | |
638 | case DT_VERNEED: name = "VERNEED"; break; | |
639 | case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; | |
02fcd126 ILT |
640 | } |
641 | ||
642 | fprintf (f, " %-11s ", name); | |
643 | if (! stringp) | |
927d05b5 | 644 | fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val); |
02fcd126 ILT |
645 | else |
646 | { | |
647 | const char *string; | |
648 | ||
649 | string = bfd_elf_string_from_elf_section (abfd, link, | |
650 | dyn.d_un.d_val); | |
651 | if (string == NULL) | |
652 | goto error_return; | |
653 | fprintf (f, "%s", string); | |
654 | } | |
655 | fprintf (f, "\n"); | |
27fb8f29 | 656 | } |
02fcd126 ILT |
657 | |
658 | free (dynbuf); | |
659 | dynbuf = NULL; | |
27fb8f29 ILT |
660 | } |
661 | ||
a66a61a0 ILT |
662 | if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) |
663 | || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) | |
664 | { | |
665 | if (! _bfd_elf_slurp_version_tables (abfd)) | |
666 | return false; | |
667 | } | |
668 | ||
669 | if (elf_dynverdef (abfd) != 0) | |
670 | { | |
671 | Elf_Internal_Verdef *t; | |
672 | ||
53d3ce37 | 673 | fprintf (f, _("\nVersion definitions:\n")); |
a66a61a0 ILT |
674 | for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef) |
675 | { | |
676 | fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx, | |
677 | t->vd_flags, t->vd_hash, t->vd_nodename); | |
678 | if (t->vd_auxptr->vda_nextptr != NULL) | |
679 | { | |
680 | Elf_Internal_Verdaux *a; | |
681 | ||
682 | fprintf (f, "\t"); | |
683 | for (a = t->vd_auxptr->vda_nextptr; | |
684 | a != NULL; | |
685 | a = a->vda_nextptr) | |
686 | fprintf (f, "%s ", a->vda_nodename); | |
687 | fprintf (f, "\n"); | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
692 | if (elf_dynverref (abfd) != 0) | |
693 | { | |
694 | Elf_Internal_Verneed *t; | |
695 | ||
53d3ce37 | 696 | fprintf (f, _("\nVersion References:\n")); |
a66a61a0 ILT |
697 | for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref) |
698 | { | |
699 | Elf_Internal_Vernaux *a; | |
700 | ||
53d3ce37 | 701 | fprintf (f, _(" required from %s:\n"), t->vn_filename); |
a66a61a0 ILT |
702 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) |
703 | fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash, | |
704 | a->vna_flags, a->vna_other, a->vna_nodename); | |
705 | } | |
706 | } | |
707 | ||
27fb8f29 | 708 | return true; |
02fcd126 ILT |
709 | |
710 | error_return: | |
711 | if (dynbuf != NULL) | |
712 | free (dynbuf); | |
713 | return false; | |
27fb8f29 ILT |
714 | } |
715 | ||
b176e1e9 | 716 | /* Display ELF-specific fields of a symbol. */ |
d6bfcdb5 | 717 | |
b176e1e9 | 718 | void |
d6bfcdb5 ILT |
719 | bfd_elf_print_symbol (abfd, filep, symbol, how) |
720 | bfd *abfd; | |
b176e1e9 ILT |
721 | PTR filep; |
722 | asymbol *symbol; | |
723 | bfd_print_symbol_type how; | |
724 | { | |
725 | FILE *file = (FILE *) filep; | |
726 | switch (how) | |
727 | { | |
728 | case bfd_print_symbol_name: | |
729 | fprintf (file, "%s", symbol->name); | |
730 | break; | |
731 | case bfd_print_symbol_more: | |
732 | fprintf (file, "elf "); | |
733 | fprintf_vma (file, symbol->value); | |
734 | fprintf (file, " %lx", (long) symbol->flags); | |
735 | break; | |
736 | case bfd_print_symbol_all: | |
737 | { | |
738 | CONST char *section_name; | |
739 | section_name = symbol->section ? symbol->section->name : "(*none*)"; | |
740 | bfd_print_symbol_vandf ((PTR) file, symbol); | |
741 | fprintf (file, " %s\t", section_name); | |
742 | /* Print the "other" value for a symbol. For common symbols, | |
743 | we've already printed the size; now print the alignment. | |
744 | For other symbols, we have no specified alignment, and | |
745 | we've printed the address; now print the size. */ | |
746 | fprintf_vma (file, | |
747 | (bfd_is_com_section (symbol->section) | |
748 | ? ((elf_symbol_type *) symbol)->internal_elf_sym.st_value | |
749 | : ((elf_symbol_type *) symbol)->internal_elf_sym.st_size)); | |
d6bfcdb5 ILT |
750 | |
751 | /* If we have version information, print it. */ | |
752 | if (elf_tdata (abfd)->dynversym_section != 0 | |
753 | && (elf_tdata (abfd)->dynverdef_section != 0 | |
754 | || elf_tdata (abfd)->dynverref_section != 0)) | |
755 | { | |
756 | unsigned int vernum; | |
757 | const char *version_string; | |
758 | ||
759 | vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION; | |
760 | ||
761 | if (vernum == 0) | |
762 | version_string = ""; | |
763 | else if (vernum == 1) | |
764 | version_string = "Base"; | |
20db2495 | 765 | else if (vernum <= elf_tdata (abfd)->cverdefs) |
d6bfcdb5 ILT |
766 | version_string = |
767 | elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; | |
768 | else | |
769 | { | |
770 | Elf_Internal_Verneed *t; | |
771 | ||
772 | version_string = ""; | |
773 | for (t = elf_tdata (abfd)->verref; | |
774 | t != NULL; | |
775 | t = t->vn_nextref) | |
776 | { | |
777 | Elf_Internal_Vernaux *a; | |
778 | ||
779 | for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) | |
780 | { | |
781 | if (a->vna_other == vernum) | |
782 | { | |
783 | version_string = a->vna_nodename; | |
784 | break; | |
785 | } | |
786 | } | |
787 | } | |
788 | } | |
789 | ||
790 | if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0) | |
20db2495 | 791 | fprintf (file, " %-11s", version_string); |
d6bfcdb5 ILT |
792 | else |
793 | { | |
794 | int i; | |
795 | ||
796 | fprintf (file, " (%s)", version_string); | |
20db2495 | 797 | for (i = 10 - strlen (version_string); i > 0; --i) |
d6bfcdb5 ILT |
798 | putc (' ', file); |
799 | } | |
800 | } | |
801 | ||
69e2ff18 ILT |
802 | /* If the st_other field is not zero, print it. */ |
803 | if (((elf_symbol_type *) symbol)->internal_elf_sym.st_other != 0) | |
804 | fprintf (file, " 0x%02x", | |
805 | ((unsigned int) | |
806 | ((elf_symbol_type *) symbol)->internal_elf_sym.st_other)); | |
d6bfcdb5 | 807 | |
b176e1e9 ILT |
808 | fprintf (file, " %s", symbol->name); |
809 | } | |
810 | break; | |
811 | } | |
812 | } | |
813 | \f | |
013dec1a ILT |
814 | /* Create an entry in an ELF linker hash table. */ |
815 | ||
5315c428 ILT |
816 | struct bfd_hash_entry * |
817 | _bfd_elf_link_hash_newfunc (entry, table, string) | |
013dec1a ILT |
818 | struct bfd_hash_entry *entry; |
819 | struct bfd_hash_table *table; | |
820 | const char *string; | |
821 | { | |
822 | struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry; | |
823 | ||
824 | /* Allocate the structure if it has not already been allocated by a | |
825 | subclass. */ | |
826 | if (ret == (struct elf_link_hash_entry *) NULL) | |
827 | ret = ((struct elf_link_hash_entry *) | |
828 | bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry))); | |
829 | if (ret == (struct elf_link_hash_entry *) NULL) | |
a9713b91 | 830 | return (struct bfd_hash_entry *) ret; |
013dec1a ILT |
831 | |
832 | /* Call the allocation method of the superclass. */ | |
833 | ret = ((struct elf_link_hash_entry *) | |
834 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
835 | table, string)); | |
836 | if (ret != (struct elf_link_hash_entry *) NULL) | |
837 | { | |
838 | /* Set local fields. */ | |
839 | ret->indx = -1; | |
840 | ret->size = 0; | |
013dec1a ILT |
841 | ret->dynindx = -1; |
842 | ret->dynstr_index = 0; | |
843 | ret->weakdef = NULL; | |
303b4cc6 RH |
844 | ret->got.offset = (bfd_vma) -1; |
845 | ret->plt.offset = (bfd_vma) -1; | |
86aac8ea | 846 | ret->linker_section_pointer = (elf_linker_section_pointers_t *)0; |
a66a61a0 | 847 | ret->verinfo.verdef = NULL; |
303b4cc6 RH |
848 | ret->vtable_entries_used = NULL; |
849 | ret->vtable_parent = NULL; | |
013dec1a | 850 | ret->type = STT_NOTYPE; |
80be821d | 851 | ret->other = 0; |
869b7d80 ILT |
852 | /* Assume that we have been called by a non-ELF symbol reader. |
853 | This flag is then reset by the code which reads an ELF input | |
854 | file. This ensures that a symbol created by a non-ELF symbol | |
855 | reader will have the flag set correctly. */ | |
856 | ret->elf_link_hash_flags = ELF_LINK_NON_ELF; | |
013dec1a ILT |
857 | } |
858 | ||
859 | return (struct bfd_hash_entry *) ret; | |
860 | } | |
861 | ||
5315c428 ILT |
862 | /* Initialize an ELF linker hash table. */ |
863 | ||
864 | boolean | |
865 | _bfd_elf_link_hash_table_init (table, abfd, newfunc) | |
866 | struct elf_link_hash_table *table; | |
867 | bfd *abfd; | |
868 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
869 | struct bfd_hash_table *, | |
870 | const char *)); | |
871 | { | |
b176e1e9 | 872 | table->dynamic_sections_created = false; |
5315c428 | 873 | table->dynobj = NULL; |
b176e1e9 ILT |
874 | /* The first dynamic symbol is a dummy. */ |
875 | table->dynsymcount = 1; | |
5315c428 ILT |
876 | table->dynstr = NULL; |
877 | table->bucketcount = 0; | |
b176e1e9 | 878 | table->needed = NULL; |
19bfbcbe | 879 | table->hgot = NULL; |
d1bf45aa | 880 | table->stab_info = NULL; |
5315c428 ILT |
881 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); |
882 | } | |
883 | ||
013dec1a ILT |
884 | /* Create an ELF linker hash table. */ |
885 | ||
886 | struct bfd_link_hash_table * | |
887 | _bfd_elf_link_hash_table_create (abfd) | |
888 | bfd *abfd; | |
889 | { | |
890 | struct elf_link_hash_table *ret; | |
891 | ||
892 | ret = ((struct elf_link_hash_table *) | |
893 | bfd_alloc (abfd, sizeof (struct elf_link_hash_table))); | |
894 | if (ret == (struct elf_link_hash_table *) NULL) | |
a9713b91 | 895 | return NULL; |
5315c428 ILT |
896 | |
897 | if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc)) | |
013dec1a ILT |
898 | { |
899 | bfd_release (abfd, ret); | |
900 | return NULL; | |
901 | } | |
902 | ||
013dec1a ILT |
903 | return &ret->root; |
904 | } | |
7c6da9ca ILT |
905 | |
906 | /* This is a hook for the ELF emulation code in the generic linker to | |
907 | tell the backend linker what file name to use for the DT_NEEDED | |
b176e1e9 ILT |
908 | entry for a dynamic object. The generic linker passes name as an |
909 | empty string to indicate that no DT_NEEDED entry should be made. */ | |
7c6da9ca ILT |
910 | |
911 | void | |
912 | bfd_elf_set_dt_needed_name (abfd, name) | |
913 | bfd *abfd; | |
914 | const char *name; | |
915 | { | |
053ae1d7 ILT |
916 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour |
917 | && bfd_get_format (abfd) == bfd_object) | |
918 | elf_dt_name (abfd) = name; | |
7c6da9ca | 919 | } |
b176e1e9 | 920 | |
053ae1d7 | 921 | /* Get the list of DT_NEEDED entries for a link. This is a hook for |
0d3887ba | 922 | the linker ELF emulation code. */ |
b176e1e9 | 923 | |
5fe14a9f | 924 | struct bfd_link_needed_list * |
b176e1e9 ILT |
925 | bfd_elf_get_needed_list (abfd, info) |
926 | bfd *abfd; | |
927 | struct bfd_link_info *info; | |
928 | { | |
b2193cc5 ILT |
929 | if (info->hash->creator->flavour != bfd_target_elf_flavour) |
930 | return NULL; | |
b176e1e9 ILT |
931 | return elf_hash_table (info)->needed; |
932 | } | |
053ae1d7 ILT |
933 | |
934 | /* Get the name actually used for a dynamic object for a link. This | |
935 | is the SONAME entry if there is one. Otherwise, it is the string | |
936 | passed to bfd_elf_set_dt_needed_name, or it is the filename. */ | |
937 | ||
938 | const char * | |
939 | bfd_elf_get_dt_soname (abfd) | |
940 | bfd *abfd; | |
941 | { | |
942 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour | |
943 | && bfd_get_format (abfd) == bfd_object) | |
944 | return elf_dt_name (abfd); | |
945 | return NULL; | |
946 | } | |
0d3887ba ILT |
947 | |
948 | /* Get the list of DT_NEEDED entries from a BFD. This is a hook for | |
949 | the ELF linker emulation code. */ | |
950 | ||
951 | boolean | |
952 | bfd_elf_get_bfd_needed_list (abfd, pneeded) | |
953 | bfd *abfd; | |
954 | struct bfd_link_needed_list **pneeded; | |
955 | { | |
956 | asection *s; | |
957 | bfd_byte *dynbuf = NULL; | |
958 | int elfsec; | |
959 | unsigned long link; | |
960 | bfd_byte *extdyn, *extdynend; | |
961 | size_t extdynsize; | |
962 | void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
963 | ||
964 | *pneeded = NULL; | |
965 | ||
966 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
967 | || bfd_get_format (abfd) != bfd_object) | |
968 | return true; | |
969 | ||
970 | s = bfd_get_section_by_name (abfd, ".dynamic"); | |
971 | if (s == NULL || s->_raw_size == 0) | |
972 | return true; | |
973 | ||
974 | dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size); | |
975 | if (dynbuf == NULL) | |
976 | goto error_return; | |
977 | ||
978 | if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0, | |
979 | s->_raw_size)) | |
980 | goto error_return; | |
981 | ||
982 | elfsec = _bfd_elf_section_from_bfd_section (abfd, s); | |
983 | if (elfsec == -1) | |
984 | goto error_return; | |
985 | ||
986 | link = elf_elfsections (abfd)[elfsec]->sh_link; | |
987 | ||
988 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
989 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
990 | ||
991 | extdyn = dynbuf; | |
992 | extdynend = extdyn + s->_raw_size; | |
993 | for (; extdyn < extdynend; extdyn += extdynsize) | |
994 | { | |
995 | Elf_Internal_Dyn dyn; | |
996 | ||
997 | (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn); | |
998 | ||
999 | if (dyn.d_tag == DT_NULL) | |
1000 | break; | |
1001 | ||
1002 | if (dyn.d_tag == DT_NEEDED) | |
1003 | { | |
1004 | const char *string; | |
1005 | struct bfd_link_needed_list *l; | |
1006 | ||
1007 | string = bfd_elf_string_from_elf_section (abfd, link, | |
1008 | dyn.d_un.d_val); | |
1009 | if (string == NULL) | |
1010 | goto error_return; | |
1011 | ||
1012 | l = (struct bfd_link_needed_list *) bfd_alloc (abfd, sizeof *l); | |
1013 | if (l == NULL) | |
1014 | goto error_return; | |
1015 | ||
1016 | l->by = abfd; | |
1017 | l->name = string; | |
1018 | l->next = *pneeded; | |
1019 | *pneeded = l; | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | free (dynbuf); | |
1024 | ||
1025 | return true; | |
1026 | ||
1027 | error_return: | |
1028 | if (dynbuf != NULL) | |
1029 | free (dynbuf); | |
1030 | return false; | |
1031 | } | |
ede4eed4 KR |
1032 | \f |
1033 | /* Allocate an ELF string table--force the first byte to be zero. */ | |
1034 | ||
1035 | struct bfd_strtab_hash * | |
1036 | _bfd_elf_stringtab_init () | |
1037 | { | |
1038 | struct bfd_strtab_hash *ret; | |
1039 | ||
1040 | ret = _bfd_stringtab_init (); | |
1041 | if (ret != NULL) | |
1042 | { | |
1043 | bfd_size_type loc; | |
1044 | ||
1045 | loc = _bfd_stringtab_add (ret, "", true, false); | |
1046 | BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); | |
1047 | if (loc == (bfd_size_type) -1) | |
1048 | { | |
1049 | _bfd_stringtab_free (ret); | |
1050 | ret = NULL; | |
1051 | } | |
1052 | } | |
1053 | return ret; | |
1054 | } | |
1055 | \f | |
1056 | /* ELF .o/exec file reading */ | |
1057 | ||
1058 | /* Create a new bfd section from an ELF section header. */ | |
1059 | ||
1060 | boolean | |
1061 | bfd_section_from_shdr (abfd, shindex) | |
1062 | bfd *abfd; | |
1063 | unsigned int shindex; | |
1064 | { | |
1065 | Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; | |
1066 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
1067 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1068 | char *name; | |
1069 | ||
1070 | name = elf_string_from_elf_strtab (abfd, hdr->sh_name); | |
1071 | ||
1072 | switch (hdr->sh_type) | |
1073 | { | |
1074 | case SHT_NULL: | |
1075 | /* Inactive section. Throw it away. */ | |
1076 | return true; | |
1077 | ||
1078 | case SHT_PROGBITS: /* Normal section with contents. */ | |
1079 | case SHT_DYNAMIC: /* Dynamic linking information. */ | |
1080 | case SHT_NOBITS: /* .bss section. */ | |
1081 | case SHT_HASH: /* .hash section. */ | |
5b3b9ff6 | 1082 | case SHT_NOTE: /* .note section. */ |
ede4eed4 KR |
1083 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
1084 | ||
1085 | case SHT_SYMTAB: /* A symbol table */ | |
1086 | if (elf_onesymtab (abfd) == shindex) | |
1087 | return true; | |
1088 | ||
1089 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1090 | BFD_ASSERT (elf_onesymtab (abfd) == 0); | |
1091 | elf_onesymtab (abfd) = shindex; | |
1092 | elf_tdata (abfd)->symtab_hdr = *hdr; | |
fd0198f0 | 1093 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; |
ede4eed4 KR |
1094 | abfd->flags |= HAS_SYMS; |
1095 | ||
1096 | /* Sometimes a shared object will map in the symbol table. If | |
1097 | SHF_ALLOC is set, and this is a shared object, then we also | |
1098 | treat this section as a BFD section. We can not base the | |
1099 | decision purely on SHF_ALLOC, because that flag is sometimes | |
1100 | set in a relocateable object file, which would confuse the | |
1101 | linker. */ | |
1102 | if ((hdr->sh_flags & SHF_ALLOC) != 0 | |
1103 | && (abfd->flags & DYNAMIC) != 0 | |
1104 | && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1105 | return false; | |
1106 | ||
1107 | return true; | |
1108 | ||
1109 | case SHT_DYNSYM: /* A dynamic symbol table */ | |
1110 | if (elf_dynsymtab (abfd) == shindex) | |
1111 | return true; | |
1112 | ||
1113 | BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); | |
1114 | BFD_ASSERT (elf_dynsymtab (abfd) == 0); | |
1115 | elf_dynsymtab (abfd) = shindex; | |
1116 | elf_tdata (abfd)->dynsymtab_hdr = *hdr; | |
fd0198f0 | 1117 | elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; |
ede4eed4 KR |
1118 | abfd->flags |= HAS_SYMS; |
1119 | ||
1120 | /* Besides being a symbol table, we also treat this as a regular | |
1121 | section, so that objcopy can handle it. */ | |
1122 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1123 | ||
1124 | case SHT_STRTAB: /* A string table */ | |
1125 | if (hdr->bfd_section != NULL) | |
1126 | return true; | |
1127 | if (ehdr->e_shstrndx == shindex) | |
1128 | { | |
1129 | elf_tdata (abfd)->shstrtab_hdr = *hdr; | |
1130 | elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; | |
1131 | return true; | |
1132 | } | |
1133 | { | |
1134 | unsigned int i; | |
1135 | ||
1136 | for (i = 1; i < ehdr->e_shnum; i++) | |
1137 | { | |
1138 | Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i]; | |
1139 | if (hdr2->sh_link == shindex) | |
1140 | { | |
1141 | if (! bfd_section_from_shdr (abfd, i)) | |
1142 | return false; | |
1143 | if (elf_onesymtab (abfd) == i) | |
1144 | { | |
1145 | elf_tdata (abfd)->strtab_hdr = *hdr; | |
1146 | elf_elfsections (abfd)[shindex] = | |
1147 | &elf_tdata (abfd)->strtab_hdr; | |
1148 | return true; | |
1149 | } | |
1150 | if (elf_dynsymtab (abfd) == i) | |
1151 | { | |
1152 | elf_tdata (abfd)->dynstrtab_hdr = *hdr; | |
fd0198f0 | 1153 | elf_elfsections (abfd)[shindex] = hdr = |
ede4eed4 KR |
1154 | &elf_tdata (abfd)->dynstrtab_hdr; |
1155 | /* We also treat this as a regular section, so | |
1156 | that objcopy can handle it. */ | |
1157 | break; | |
1158 | } | |
1159 | #if 0 /* Not handling other string tables specially right now. */ | |
1160 | hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */ | |
1161 | /* We have a strtab for some random other section. */ | |
1162 | newsect = (asection *) hdr2->bfd_section; | |
1163 | if (!newsect) | |
1164 | break; | |
1165 | hdr->bfd_section = newsect; | |
1166 | hdr2 = &elf_section_data (newsect)->str_hdr; | |
1167 | *hdr2 = *hdr; | |
1168 | elf_elfsections (abfd)[shindex] = hdr2; | |
1169 | #endif | |
1170 | } | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); | |
1175 | ||
1176 | case SHT_REL: | |
1177 | case SHT_RELA: | |
1178 | /* *These* do a lot of work -- but build no sections! */ | |
1179 | { | |
1180 | asection *target_sect; | |
1181 | Elf_Internal_Shdr *hdr2; | |
ede4eed4 | 1182 | |
ae115e51 ILT |
1183 | /* For some incomprehensible reason Oracle distributes |
1184 | libraries for Solaris in which some of the objects have | |
1185 | bogus sh_link fields. It would be nice if we could just | |
1186 | reject them, but, unfortunately, some people need to use | |
1187 | them. We scan through the section headers; if we find only | |
1188 | one suitable symbol table, we clobber the sh_link to point | |
1189 | to it. I hope this doesn't break anything. */ | |
1190 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB | |
1191 | && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM) | |
1192 | { | |
1193 | int scan; | |
1194 | int found; | |
1195 | ||
1196 | found = 0; | |
1197 | for (scan = 1; scan < ehdr->e_shnum; scan++) | |
1198 | { | |
1199 | if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB | |
1200 | || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM) | |
1201 | { | |
1202 | if (found != 0) | |
1203 | { | |
1204 | found = 0; | |
1205 | break; | |
1206 | } | |
1207 | found = scan; | |
1208 | } | |
1209 | } | |
1210 | if (found != 0) | |
1211 | hdr->sh_link = found; | |
1212 | } | |
1213 | ||
ede4eed4 | 1214 | /* Get the symbol table. */ |
ae115e51 ILT |
1215 | if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB |
1216 | && ! bfd_section_from_shdr (abfd, hdr->sh_link)) | |
ede4eed4 KR |
1217 | return false; |
1218 | ||
1219 | /* If this reloc section does not use the main symbol table we | |
1220 | don't treat it as a reloc section. BFD can't adequately | |
1221 | represent such a section, so at least for now, we don't | |
1222 | try. We just present it as a normal section. */ | |
1223 | if (hdr->sh_link != elf_onesymtab (abfd)) | |
e85f2fbd | 1224 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
ede4eed4 | 1225 | |
ede4eed4 KR |
1226 | if (! bfd_section_from_shdr (abfd, hdr->sh_info)) |
1227 | return false; | |
1228 | target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info); | |
1229 | if (target_sect == NULL) | |
1230 | return false; | |
1231 | ||
d1bf45aa ILT |
1232 | if ((target_sect->flags & SEC_RELOC) == 0 |
1233 | || target_sect->reloc_count == 0) | |
1234 | hdr2 = &elf_section_data (target_sect)->rel_hdr; | |
1235 | else | |
1236 | { | |
1237 | BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); | |
1238 | hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, sizeof (*hdr2)); | |
1239 | elf_section_data (target_sect)->rel_hdr2 = hdr2; | |
1240 | } | |
ede4eed4 KR |
1241 | *hdr2 = *hdr; |
1242 | elf_elfsections (abfd)[shindex] = hdr2; | |
d1bf45aa | 1243 | target_sect->reloc_count += hdr->sh_size / hdr->sh_entsize; |
ede4eed4 KR |
1244 | target_sect->flags |= SEC_RELOC; |
1245 | target_sect->relocation = NULL; | |
1246 | target_sect->rel_filepos = hdr->sh_offset; | |
1247 | abfd->flags |= HAS_RELOC; | |
1248 | return true; | |
1249 | } | |
1250 | break; | |
1251 | ||
a66a61a0 ILT |
1252 | case SHT_GNU_verdef: |
1253 | elf_dynverdef (abfd) = shindex; | |
1254 | elf_tdata (abfd)->dynverdef_hdr = *hdr; | |
d6bfcdb5 | 1255 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
a66a61a0 ILT |
1256 | break; |
1257 | ||
1258 | case SHT_GNU_versym: | |
1259 | elf_dynversym (abfd) = shindex; | |
1260 | elf_tdata (abfd)->dynversym_hdr = *hdr; | |
d6bfcdb5 | 1261 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
a66a61a0 ILT |
1262 | break; |
1263 | ||
1264 | case SHT_GNU_verneed: | |
1265 | elf_dynverref (abfd) = shindex; | |
1266 | elf_tdata (abfd)->dynverref_hdr = *hdr; | |
d6bfcdb5 | 1267 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name); |
a66a61a0 ILT |
1268 | break; |
1269 | ||
ede4eed4 | 1270 | case SHT_SHLIB: |
ede4eed4 KR |
1271 | return true; |
1272 | ||
1273 | default: | |
1274 | /* Check for any processor-specific section types. */ | |
1275 | { | |
1276 | if (bed->elf_backend_section_from_shdr) | |
1277 | (*bed->elf_backend_section_from_shdr) (abfd, hdr, name); | |
1278 | } | |
1279 | break; | |
1280 | } | |
1281 | ||
1282 | return true; | |
1283 | } | |
1284 | ||
1285 | /* Given an ELF section number, retrieve the corresponding BFD | |
1286 | section. */ | |
1287 | ||
1288 | asection * | |
1289 | bfd_section_from_elf_index (abfd, index) | |
1290 | bfd *abfd; | |
1291 | unsigned int index; | |
1292 | { | |
1293 | BFD_ASSERT (index > 0 && index < SHN_LORESERVE); | |
1294 | if (index >= elf_elfheader (abfd)->e_shnum) | |
1295 | return NULL; | |
1296 | return elf_elfsections (abfd)[index]->bfd_section; | |
1297 | } | |
1298 | ||
1299 | boolean | |
1300 | _bfd_elf_new_section_hook (abfd, sec) | |
1301 | bfd *abfd; | |
1302 | asection *sec; | |
1303 | { | |
1304 | struct bfd_elf_section_data *sdata; | |
1305 | ||
1306 | sdata = (struct bfd_elf_section_data *) bfd_alloc (abfd, sizeof (*sdata)); | |
1307 | if (!sdata) | |
a9713b91 | 1308 | return false; |
ede4eed4 KR |
1309 | sec->used_by_bfd = (PTR) sdata; |
1310 | memset (sdata, 0, sizeof (*sdata)); | |
1311 | return true; | |
1312 | } | |
1313 | ||
1314 | /* Create a new bfd section from an ELF program header. | |
1315 | ||
1316 | Since program segments have no names, we generate a synthetic name | |
1317 | of the form segment<NUM>, where NUM is generally the index in the | |
1318 | program header table. For segments that are split (see below) we | |
1319 | generate the names segment<NUM>a and segment<NUM>b. | |
1320 | ||
1321 | Note that some program segments may have a file size that is different than | |
1322 | (less than) the memory size. All this means is that at execution the | |
1323 | system must allocate the amount of memory specified by the memory size, | |
1324 | but only initialize it with the first "file size" bytes read from the | |
1325 | file. This would occur for example, with program segments consisting | |
1326 | of combined data+bss. | |
1327 | ||
1328 | To handle the above situation, this routine generates TWO bfd sections | |
1329 | for the single program segment. The first has the length specified by | |
1330 | the file size of the segment, and the second has the length specified | |
1331 | by the difference between the two sizes. In effect, the segment is split | |
1332 | into it's initialized and uninitialized parts. | |
1333 | ||
1334 | */ | |
1335 | ||
1336 | boolean | |
1337 | bfd_section_from_phdr (abfd, hdr, index) | |
1338 | bfd *abfd; | |
1339 | Elf_Internal_Phdr *hdr; | |
1340 | int index; | |
1341 | { | |
1342 | asection *newsect; | |
1343 | char *name; | |
1344 | char namebuf[64]; | |
1345 | int split; | |
1346 | ||
1347 | split = ((hdr->p_memsz > 0) && | |
1348 | (hdr->p_filesz > 0) && | |
1349 | (hdr->p_memsz > hdr->p_filesz)); | |
1350 | sprintf (namebuf, split ? "segment%da" : "segment%d", index); | |
1351 | name = bfd_alloc (abfd, strlen (namebuf) + 1); | |
1352 | if (!name) | |
a9713b91 | 1353 | return false; |
ede4eed4 KR |
1354 | strcpy (name, namebuf); |
1355 | newsect = bfd_make_section (abfd, name); | |
1356 | if (newsect == NULL) | |
1357 | return false; | |
1358 | newsect->vma = hdr->p_vaddr; | |
ae115e51 | 1359 | newsect->lma = hdr->p_paddr; |
ede4eed4 KR |
1360 | newsect->_raw_size = hdr->p_filesz; |
1361 | newsect->filepos = hdr->p_offset; | |
1362 | newsect->flags |= SEC_HAS_CONTENTS; | |
1363 | if (hdr->p_type == PT_LOAD) | |
1364 | { | |
1365 | newsect->flags |= SEC_ALLOC; | |
1366 | newsect->flags |= SEC_LOAD; | |
1367 | if (hdr->p_flags & PF_X) | |
1368 | { | |
1369 | /* FIXME: all we known is that it has execute PERMISSION, | |
1370 | may be data. */ | |
1371 | newsect->flags |= SEC_CODE; | |
1372 | } | |
1373 | } | |
1374 | if (!(hdr->p_flags & PF_W)) | |
1375 | { | |
1376 | newsect->flags |= SEC_READONLY; | |
1377 | } | |
1378 | ||
1379 | if (split) | |
1380 | { | |
1381 | sprintf (namebuf, "segment%db", index); | |
1382 | name = bfd_alloc (abfd, strlen (namebuf) + 1); | |
1383 | if (!name) | |
a9713b91 | 1384 | return false; |
ede4eed4 KR |
1385 | strcpy (name, namebuf); |
1386 | newsect = bfd_make_section (abfd, name); | |
1387 | if (newsect == NULL) | |
1388 | return false; | |
1389 | newsect->vma = hdr->p_vaddr + hdr->p_filesz; | |
ae115e51 | 1390 | newsect->lma = hdr->p_paddr + hdr->p_filesz; |
ede4eed4 KR |
1391 | newsect->_raw_size = hdr->p_memsz - hdr->p_filesz; |
1392 | if (hdr->p_type == PT_LOAD) | |
1393 | { | |
1394 | newsect->flags |= SEC_ALLOC; | |
1395 | if (hdr->p_flags & PF_X) | |
1396 | newsect->flags |= SEC_CODE; | |
1397 | } | |
1398 | if (!(hdr->p_flags & PF_W)) | |
1399 | newsect->flags |= SEC_READONLY; | |
1400 | } | |
1401 | ||
1402 | return true; | |
1403 | } | |
1404 | ||
1405 | /* Set up an ELF internal section header for a section. */ | |
1406 | ||
1407 | /*ARGSUSED*/ | |
1408 | static void | |
1409 | elf_fake_sections (abfd, asect, failedptrarg) | |
1410 | bfd *abfd; | |
1411 | asection *asect; | |
1412 | PTR failedptrarg; | |
1413 | { | |
1414 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1415 | boolean *failedptr = (boolean *) failedptrarg; | |
1416 | Elf_Internal_Shdr *this_hdr; | |
1417 | ||
1418 | if (*failedptr) | |
1419 | { | |
1420 | /* We already failed; just get out of the bfd_map_over_sections | |
1421 | loop. */ | |
1422 | return; | |
1423 | } | |
1424 | ||
1425 | this_hdr = &elf_section_data (asect)->this_hdr; | |
1426 | ||
1427 | this_hdr->sh_name = (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd), | |
1428 | asect->name, | |
1429 | true, false); | |
1430 | if (this_hdr->sh_name == (unsigned long) -1) | |
1431 | { | |
1432 | *failedptr = true; | |
1433 | return; | |
1434 | } | |
1435 | ||
1436 | this_hdr->sh_flags = 0; | |
ae115e51 | 1437 | |
50bd50d4 MH |
1438 | if ((asect->flags & SEC_ALLOC) != 0 |
1439 | || asect->user_set_vma) | |
fd0198f0 | 1440 | this_hdr->sh_addr = asect->vma; |
ede4eed4 KR |
1441 | else |
1442 | this_hdr->sh_addr = 0; | |
ae115e51 | 1443 | |
ede4eed4 KR |
1444 | this_hdr->sh_offset = 0; |
1445 | this_hdr->sh_size = asect->_raw_size; | |
1446 | this_hdr->sh_link = 0; | |
ede4eed4 | 1447 | this_hdr->sh_addralign = 1 << asect->alignment_power; |
fd0198f0 ILT |
1448 | /* The sh_entsize and sh_info fields may have been set already by |
1449 | copy_private_section_data. */ | |
ede4eed4 KR |
1450 | |
1451 | this_hdr->bfd_section = asect; | |
1452 | this_hdr->contents = NULL; | |
1453 | ||
1454 | /* FIXME: This should not be based on section names. */ | |
1455 | if (strcmp (asect->name, ".dynstr") == 0) | |
1456 | this_hdr->sh_type = SHT_STRTAB; | |
1457 | else if (strcmp (asect->name, ".hash") == 0) | |
1458 | { | |
1459 | this_hdr->sh_type = SHT_HASH; | |
1460 | this_hdr->sh_entsize = bed->s->arch_size / 8; | |
1461 | } | |
1462 | else if (strcmp (asect->name, ".dynsym") == 0) | |
1463 | { | |
1464 | this_hdr->sh_type = SHT_DYNSYM; | |
1465 | this_hdr->sh_entsize = bed->s->sizeof_sym; | |
1466 | } | |
1467 | else if (strcmp (asect->name, ".dynamic") == 0) | |
1468 | { | |
1469 | this_hdr->sh_type = SHT_DYNAMIC; | |
1470 | this_hdr->sh_entsize = bed->s->sizeof_dyn; | |
1471 | } | |
1472 | else if (strncmp (asect->name, ".rela", 5) == 0 | |
1473 | && get_elf_backend_data (abfd)->use_rela_p) | |
1474 | { | |
1475 | this_hdr->sh_type = SHT_RELA; | |
1476 | this_hdr->sh_entsize = bed->s->sizeof_rela; | |
1477 | } | |
1478 | else if (strncmp (asect->name, ".rel", 4) == 0 | |
1479 | && ! get_elf_backend_data (abfd)->use_rela_p) | |
1480 | { | |
1481 | this_hdr->sh_type = SHT_REL; | |
1482 | this_hdr->sh_entsize = bed->s->sizeof_rel; | |
1483 | } | |
a66a61a0 | 1484 | else if (strncmp (asect->name, ".note", 5) == 0) |
ede4eed4 KR |
1485 | this_hdr->sh_type = SHT_NOTE; |
1486 | else if (strncmp (asect->name, ".stab", 5) == 0 | |
1487 | && strcmp (asect->name + strlen (asect->name) - 3, "str") == 0) | |
1488 | this_hdr->sh_type = SHT_STRTAB; | |
a66a61a0 ILT |
1489 | else if (strcmp (asect->name, ".gnu.version") == 0) |
1490 | { | |
1491 | this_hdr->sh_type = SHT_GNU_versym; | |
1492 | this_hdr->sh_entsize = sizeof (Elf_External_Versym); | |
1493 | } | |
1494 | else if (strcmp (asect->name, ".gnu.version_d") == 0) | |
1495 | { | |
1496 | this_hdr->sh_type = SHT_GNU_verdef; | |
1497 | this_hdr->sh_entsize = 0; | |
d6bfcdb5 ILT |
1498 | /* objcopy or strip will copy over sh_info, but may not set |
1499 | cverdefs. The linker will set cverdefs, but sh_info will be | |
1500 | zero. */ | |
1501 | if (this_hdr->sh_info == 0) | |
1502 | this_hdr->sh_info = elf_tdata (abfd)->cverdefs; | |
1503 | else | |
1504 | BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0 | |
1505 | || this_hdr->sh_info == elf_tdata (abfd)->cverdefs); | |
a66a61a0 ILT |
1506 | } |
1507 | else if (strcmp (asect->name, ".gnu.version_r") == 0) | |
1508 | { | |
1509 | this_hdr->sh_type = SHT_GNU_verneed; | |
1510 | this_hdr->sh_entsize = 0; | |
d6bfcdb5 ILT |
1511 | /* objcopy or strip will copy over sh_info, but may not set |
1512 | cverrefs. The linker will set cverrefs, but sh_info will be | |
1513 | zero. */ | |
1514 | if (this_hdr->sh_info == 0) | |
1515 | this_hdr->sh_info = elf_tdata (abfd)->cverrefs; | |
1516 | else | |
1517 | BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0 | |
1518 | || this_hdr->sh_info == elf_tdata (abfd)->cverrefs); | |
a66a61a0 | 1519 | } |
ede4eed4 KR |
1520 | else if ((asect->flags & SEC_ALLOC) != 0 |
1521 | && (asect->flags & SEC_LOAD) != 0) | |
1522 | this_hdr->sh_type = SHT_PROGBITS; | |
1523 | else if ((asect->flags & SEC_ALLOC) != 0 | |
1524 | && ((asect->flags & SEC_LOAD) == 0)) | |
5fe14a9f | 1525 | this_hdr->sh_type = SHT_NOBITS; |
ede4eed4 KR |
1526 | else |
1527 | { | |
1528 | /* Who knows? */ | |
1529 | this_hdr->sh_type = SHT_PROGBITS; | |
1530 | } | |
1531 | ||
1532 | if ((asect->flags & SEC_ALLOC) != 0) | |
1533 | this_hdr->sh_flags |= SHF_ALLOC; | |
1534 | if ((asect->flags & SEC_READONLY) == 0) | |
1535 | this_hdr->sh_flags |= SHF_WRITE; | |
1536 | if ((asect->flags & SEC_CODE) != 0) | |
1537 | this_hdr->sh_flags |= SHF_EXECINSTR; | |
1538 | ||
1539 | /* Check for processor-specific section types. */ | |
1540 | { | |
1541 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1542 | ||
1543 | if (bed->elf_backend_fake_sections) | |
1544 | (*bed->elf_backend_fake_sections) (abfd, this_hdr, asect); | |
1545 | } | |
1546 | ||
1547 | /* If the section has relocs, set up a section header for the | |
1548 | SHT_REL[A] section. */ | |
1549 | if ((asect->flags & SEC_RELOC) != 0) | |
1550 | { | |
1551 | Elf_Internal_Shdr *rela_hdr; | |
1552 | int use_rela_p = get_elf_backend_data (abfd)->use_rela_p; | |
1553 | char *name; | |
1554 | ||
1555 | rela_hdr = &elf_section_data (asect)->rel_hdr; | |
1556 | name = bfd_alloc (abfd, sizeof ".rela" + strlen (asect->name)); | |
1557 | if (name == NULL) | |
1558 | { | |
ede4eed4 KR |
1559 | *failedptr = true; |
1560 | return; | |
1561 | } | |
1562 | sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name); | |
1563 | rela_hdr->sh_name = | |
1564 | (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd), name, | |
1565 | true, false); | |
1566 | if (rela_hdr->sh_name == (unsigned int) -1) | |
1567 | { | |
1568 | *failedptr = true; | |
1569 | return; | |
1570 | } | |
1571 | rela_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL; | |
1572 | rela_hdr->sh_entsize = (use_rela_p | |
1573 | ? bed->s->sizeof_rela | |
1574 | : bed->s->sizeof_rel); | |
1575 | rela_hdr->sh_addralign = bed->s->file_align; | |
1576 | rela_hdr->sh_flags = 0; | |
1577 | rela_hdr->sh_addr = 0; | |
1578 | rela_hdr->sh_size = 0; | |
1579 | rela_hdr->sh_offset = 0; | |
1580 | } | |
1581 | } | |
1582 | ||
1583 | /* Assign all ELF section numbers. The dummy first section is handled here | |
1584 | too. The link/info pointers for the standard section types are filled | |
1585 | in here too, while we're at it. */ | |
1586 | ||
1587 | static boolean | |
1588 | assign_section_numbers (abfd) | |
1589 | bfd *abfd; | |
1590 | { | |
1591 | struct elf_obj_tdata *t = elf_tdata (abfd); | |
1592 | asection *sec; | |
1593 | unsigned int section_number; | |
1594 | Elf_Internal_Shdr **i_shdrp; | |
1595 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1596 | ||
1597 | section_number = 1; | |
1598 | ||
1599 | for (sec = abfd->sections; sec; sec = sec->next) | |
1600 | { | |
1601 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
1602 | ||
1603 | d->this_idx = section_number++; | |
1604 | if ((sec->flags & SEC_RELOC) == 0) | |
1605 | d->rel_idx = 0; | |
1606 | else | |
1607 | d->rel_idx = section_number++; | |
1608 | } | |
1609 | ||
1610 | t->shstrtab_section = section_number++; | |
1611 | elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section; | |
1612 | t->shstrtab_hdr.sh_size = _bfd_stringtab_size (elf_shstrtab (abfd)); | |
1613 | ||
1614 | if (abfd->symcount > 0) | |
1615 | { | |
1616 | t->symtab_section = section_number++; | |
1617 | t->strtab_section = section_number++; | |
1618 | } | |
1619 | ||
1620 | elf_elfheader (abfd)->e_shnum = section_number; | |
1621 | ||
1622 | /* Set up the list of section header pointers, in agreement with the | |
1623 | indices. */ | |
1624 | i_shdrp = ((Elf_Internal_Shdr **) | |
1625 | bfd_alloc (abfd, section_number * sizeof (Elf_Internal_Shdr *))); | |
1626 | if (i_shdrp == NULL) | |
a9713b91 | 1627 | return false; |
ede4eed4 KR |
1628 | |
1629 | i_shdrp[0] = ((Elf_Internal_Shdr *) | |
1630 | bfd_alloc (abfd, sizeof (Elf_Internal_Shdr))); | |
1631 | if (i_shdrp[0] == NULL) | |
1632 | { | |
1633 | bfd_release (abfd, i_shdrp); | |
ede4eed4 KR |
1634 | return false; |
1635 | } | |
1636 | memset (i_shdrp[0], 0, sizeof (Elf_Internal_Shdr)); | |
1637 | ||
1638 | elf_elfsections (abfd) = i_shdrp; | |
1639 | ||
1640 | i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr; | |
1641 | if (abfd->symcount > 0) | |
1642 | { | |
1643 | i_shdrp[t->symtab_section] = &t->symtab_hdr; | |
1644 | i_shdrp[t->strtab_section] = &t->strtab_hdr; | |
1645 | t->symtab_hdr.sh_link = t->strtab_section; | |
1646 | } | |
1647 | for (sec = abfd->sections; sec; sec = sec->next) | |
1648 | { | |
1649 | struct bfd_elf_section_data *d = elf_section_data (sec); | |
1650 | asection *s; | |
1651 | const char *name; | |
1652 | ||
1653 | i_shdrp[d->this_idx] = &d->this_hdr; | |
1654 | if (d->rel_idx != 0) | |
1655 | i_shdrp[d->rel_idx] = &d->rel_hdr; | |
1656 | ||
1657 | /* Fill in the sh_link and sh_info fields while we're at it. */ | |
1658 | ||
1659 | /* sh_link of a reloc section is the section index of the symbol | |
1660 | table. sh_info is the section index of the section to which | |
1661 | the relocation entries apply. */ | |
1662 | if (d->rel_idx != 0) | |
1663 | { | |
1664 | d->rel_hdr.sh_link = t->symtab_section; | |
1665 | d->rel_hdr.sh_info = d->this_idx; | |
1666 | } | |
1667 | ||
1668 | switch (d->this_hdr.sh_type) | |
1669 | { | |
1670 | case SHT_REL: | |
1671 | case SHT_RELA: | |
1672 | /* A reloc section which we are treating as a normal BFD | |
1673 | section. sh_link is the section index of the symbol | |
1674 | table. sh_info is the section index of the section to | |
1675 | which the relocation entries apply. We assume that an | |
1676 | allocated reloc section uses the dynamic symbol table. | |
1677 | FIXME: How can we be sure? */ | |
1678 | s = bfd_get_section_by_name (abfd, ".dynsym"); | |
1679 | if (s != NULL) | |
1680 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
1681 | ||
1682 | /* We look up the section the relocs apply to by name. */ | |
1683 | name = sec->name; | |
1684 | if (d->this_hdr.sh_type == SHT_REL) | |
1685 | name += 4; | |
1686 | else | |
1687 | name += 5; | |
1688 | s = bfd_get_section_by_name (abfd, name); | |
1689 | if (s != NULL) | |
1690 | d->this_hdr.sh_info = elf_section_data (s)->this_idx; | |
1691 | break; | |
1692 | ||
1693 | case SHT_STRTAB: | |
1694 | /* We assume that a section named .stab*str is a stabs | |
1695 | string section. We look for a section with the same name | |
1696 | but without the trailing ``str'', and set its sh_link | |
1697 | field to point to this section. */ | |
1698 | if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0 | |
1699 | && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0) | |
1700 | { | |
1701 | size_t len; | |
1702 | char *alc; | |
1703 | ||
1704 | len = strlen (sec->name); | |
58142f10 | 1705 | alc = (char *) bfd_malloc (len - 2); |
ede4eed4 | 1706 | if (alc == NULL) |
58142f10 | 1707 | return false; |
ede4eed4 KR |
1708 | strncpy (alc, sec->name, len - 3); |
1709 | alc[len - 3] = '\0'; | |
1710 | s = bfd_get_section_by_name (abfd, alc); | |
1711 | free (alc); | |
1712 | if (s != NULL) | |
1713 | { | |
1714 | elf_section_data (s)->this_hdr.sh_link = d->this_idx; | |
1715 | ||
1716 | /* This is a .stab section. */ | |
1717 | elf_section_data (s)->this_hdr.sh_entsize = | |
1718 | 4 + 2 * (bed->s->arch_size / 8); | |
1719 | } | |
1720 | } | |
1721 | break; | |
1722 | ||
1723 | case SHT_DYNAMIC: | |
1724 | case SHT_DYNSYM: | |
a66a61a0 ILT |
1725 | case SHT_GNU_verneed: |
1726 | case SHT_GNU_verdef: | |
ede4eed4 | 1727 | /* sh_link is the section header index of the string table |
a66a61a0 ILT |
1728 | used for the dynamic entries, or the symbol table, or the |
1729 | version strings. */ | |
ede4eed4 KR |
1730 | s = bfd_get_section_by_name (abfd, ".dynstr"); |
1731 | if (s != NULL) | |
1732 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
1733 | break; | |
1734 | ||
1735 | case SHT_HASH: | |
a66a61a0 | 1736 | case SHT_GNU_versym: |
ede4eed4 | 1737 | /* sh_link is the section header index of the symbol table |
a66a61a0 | 1738 | this hash table or version table is for. */ |
ede4eed4 KR |
1739 | s = bfd_get_section_by_name (abfd, ".dynsym"); |
1740 | if (s != NULL) | |
1741 | d->this_hdr.sh_link = elf_section_data (s)->this_idx; | |
1742 | break; | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | return true; | |
1747 | } | |
1748 | ||
1749 | /* Map symbol from it's internal number to the external number, moving | |
1750 | all local symbols to be at the head of the list. */ | |
1751 | ||
1752 | static INLINE int | |
1753 | sym_is_global (abfd, sym) | |
1754 | bfd *abfd; | |
1755 | asymbol *sym; | |
1756 | { | |
1757 | /* If the backend has a special mapping, use it. */ | |
1758 | if (get_elf_backend_data (abfd)->elf_backend_sym_is_global) | |
1759 | return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global) | |
1760 | (abfd, sym)); | |
1761 | ||
1762 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 | |
1763 | || bfd_is_und_section (bfd_get_section (sym)) | |
1764 | || bfd_is_com_section (bfd_get_section (sym))); | |
1765 | } | |
1766 | ||
1767 | static boolean | |
1768 | elf_map_symbols (abfd) | |
1769 | bfd *abfd; | |
1770 | { | |
1771 | int symcount = bfd_get_symcount (abfd); | |
1772 | asymbol **syms = bfd_get_outsymbols (abfd); | |
1773 | asymbol **sect_syms; | |
1774 | int num_locals = 0; | |
1775 | int num_globals = 0; | |
1776 | int num_locals2 = 0; | |
1777 | int num_globals2 = 0; | |
1778 | int max_index = 0; | |
1779 | int num_sections = 0; | |
1780 | int idx; | |
1781 | asection *asect; | |
1782 | asymbol **new_syms; | |
1783 | ||
1784 | #ifdef DEBUG | |
1785 | fprintf (stderr, "elf_map_symbols\n"); | |
1786 | fflush (stderr); | |
1787 | #endif | |
1788 | ||
1789 | /* Add a section symbol for each BFD section. FIXME: Is this really | |
1790 | necessary? */ | |
1791 | for (asect = abfd->sections; asect; asect = asect->next) | |
1792 | { | |
1793 | if (max_index < asect->index) | |
1794 | max_index = asect->index; | |
1795 | } | |
1796 | ||
1797 | max_index++; | |
1798 | sect_syms = (asymbol **) bfd_zalloc (abfd, max_index * sizeof (asymbol *)); | |
1799 | if (sect_syms == NULL) | |
a9713b91 | 1800 | return false; |
ede4eed4 KR |
1801 | elf_section_syms (abfd) = sect_syms; |
1802 | ||
1803 | for (idx = 0; idx < symcount; idx++) | |
1804 | { | |
1805 | if ((syms[idx]->flags & BSF_SECTION_SYM) != 0 | |
5e3da1b0 | 1806 | && syms[idx]->value == 0) |
ede4eed4 KR |
1807 | { |
1808 | asection *sec; | |
1809 | ||
1810 | sec = syms[idx]->section; | |
1811 | if (sec->owner != NULL) | |
1812 | { | |
1813 | if (sec->owner != abfd) | |
1814 | { | |
1815 | if (sec->output_offset != 0) | |
1816 | continue; | |
1817 | sec = sec->output_section; | |
1818 | BFD_ASSERT (sec->owner == abfd); | |
1819 | } | |
1820 | sect_syms[sec->index] = syms[idx]; | |
1821 | } | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | for (asect = abfd->sections; asect; asect = asect->next) | |
1826 | { | |
1827 | asymbol *sym; | |
1828 | ||
1829 | if (sect_syms[asect->index] != NULL) | |
1830 | continue; | |
1831 | ||
1832 | sym = bfd_make_empty_symbol (abfd); | |
1833 | if (sym == NULL) | |
1834 | return false; | |
1835 | sym->the_bfd = abfd; | |
1836 | sym->name = asect->name; | |
1837 | sym->value = 0; | |
1838 | /* Set the flags to 0 to indicate that this one was newly added. */ | |
1839 | sym->flags = 0; | |
1840 | sym->section = asect; | |
1841 | sect_syms[asect->index] = sym; | |
1842 | num_sections++; | |
1843 | #ifdef DEBUG | |
1844 | fprintf (stderr, | |
9e7e5d5e | 1845 | _("creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n"), |
ede4eed4 KR |
1846 | asect->name, (long) asect->vma, asect->index, (long) asect); |
1847 | #endif | |
1848 | } | |
1849 | ||
1850 | /* Classify all of the symbols. */ | |
1851 | for (idx = 0; idx < symcount; idx++) | |
1852 | { | |
1853 | if (!sym_is_global (abfd, syms[idx])) | |
1854 | num_locals++; | |
1855 | else | |
1856 | num_globals++; | |
1857 | } | |
1858 | for (asect = abfd->sections; asect; asect = asect->next) | |
1859 | { | |
1860 | if (sect_syms[asect->index] != NULL | |
1861 | && sect_syms[asect->index]->flags == 0) | |
1862 | { | |
1863 | sect_syms[asect->index]->flags = BSF_SECTION_SYM; | |
1864 | if (!sym_is_global (abfd, sect_syms[asect->index])) | |
1865 | num_locals++; | |
1866 | else | |
1867 | num_globals++; | |
1868 | sect_syms[asect->index]->flags = 0; | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | /* Now sort the symbols so the local symbols are first. */ | |
1873 | new_syms = ((asymbol **) | |
1874 | bfd_alloc (abfd, | |
1875 | (num_locals + num_globals) * sizeof (asymbol *))); | |
1876 | if (new_syms == NULL) | |
a9713b91 | 1877 | return false; |
ede4eed4 KR |
1878 | |
1879 | for (idx = 0; idx < symcount; idx++) | |
1880 | { | |
1881 | asymbol *sym = syms[idx]; | |
1882 | int i; | |
1883 | ||
1884 | if (!sym_is_global (abfd, sym)) | |
1885 | i = num_locals2++; | |
1886 | else | |
1887 | i = num_locals + num_globals2++; | |
1888 | new_syms[i] = sym; | |
1889 | sym->udata.i = i + 1; | |
1890 | } | |
1891 | for (asect = abfd->sections; asect; asect = asect->next) | |
1892 | { | |
1893 | if (sect_syms[asect->index] != NULL | |
1894 | && sect_syms[asect->index]->flags == 0) | |
1895 | { | |
1896 | asymbol *sym = sect_syms[asect->index]; | |
1897 | int i; | |
1898 | ||
1899 | sym->flags = BSF_SECTION_SYM; | |
1900 | if (!sym_is_global (abfd, sym)) | |
1901 | i = num_locals2++; | |
1902 | else | |
1903 | i = num_locals + num_globals2++; | |
1904 | new_syms[i] = sym; | |
1905 | sym->udata.i = i + 1; | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | bfd_set_symtab (abfd, new_syms, num_locals + num_globals); | |
1910 | ||
1911 | elf_num_locals (abfd) = num_locals; | |
1912 | elf_num_globals (abfd) = num_globals; | |
1913 | return true; | |
1914 | } | |
1915 | ||
fd0198f0 ILT |
1916 | /* Align to the maximum file alignment that could be required for any |
1917 | ELF data structure. */ | |
1918 | ||
1919 | static INLINE file_ptr align_file_position PARAMS ((file_ptr, int)); | |
1920 | static INLINE file_ptr | |
1921 | align_file_position (off, align) | |
1922 | file_ptr off; | |
1923 | int align; | |
1924 | { | |
1925 | return (off + align - 1) & ~(align - 1); | |
1926 | } | |
1927 | ||
1928 | /* Assign a file position to a section, optionally aligning to the | |
1929 | required section alignment. */ | |
1930 | ||
1931 | INLINE file_ptr | |
1932 | _bfd_elf_assign_file_position_for_section (i_shdrp, offset, align) | |
1933 | Elf_Internal_Shdr *i_shdrp; | |
1934 | file_ptr offset; | |
1935 | boolean align; | |
1936 | { | |
1937 | if (align) | |
1938 | { | |
1939 | unsigned int al; | |
1940 | ||
1941 | al = i_shdrp->sh_addralign; | |
1942 | if (al > 1) | |
1943 | offset = BFD_ALIGN (offset, al); | |
1944 | } | |
1945 | i_shdrp->sh_offset = offset; | |
1946 | if (i_shdrp->bfd_section != NULL) | |
1947 | i_shdrp->bfd_section->filepos = offset; | |
1948 | if (i_shdrp->sh_type != SHT_NOBITS) | |
1949 | offset += i_shdrp->sh_size; | |
1950 | return offset; | |
1951 | } | |
1952 | ||
ede4eed4 KR |
1953 | /* Compute the file positions we are going to put the sections at, and |
1954 | otherwise prepare to begin writing out the ELF file. If LINK_INFO | |
1955 | is not NULL, this is being called by the ELF backend linker. */ | |
1956 | ||
1957 | boolean | |
1958 | _bfd_elf_compute_section_file_positions (abfd, link_info) | |
1959 | bfd *abfd; | |
1960 | struct bfd_link_info *link_info; | |
1961 | { | |
1962 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
1963 | boolean failed; | |
1964 | struct bfd_strtab_hash *strtab; | |
1965 | Elf_Internal_Shdr *shstrtab_hdr; | |
1966 | ||
1967 | if (abfd->output_has_begun) | |
1968 | return true; | |
1969 | ||
1970 | /* Do any elf backend specific processing first. */ | |
1971 | if (bed->elf_backend_begin_write_processing) | |
1972 | (*bed->elf_backend_begin_write_processing) (abfd, link_info); | |
1973 | ||
1974 | if (! prep_headers (abfd)) | |
1975 | return false; | |
1976 | ||
1977 | failed = false; | |
1978 | bfd_map_over_sections (abfd, elf_fake_sections, &failed); | |
1979 | if (failed) | |
1980 | return false; | |
1981 | ||
1982 | if (!assign_section_numbers (abfd)) | |
1983 | return false; | |
1984 | ||
1985 | /* The backend linker builds symbol table information itself. */ | |
fd0198f0 | 1986 | if (link_info == NULL && abfd->symcount > 0) |
ede4eed4 | 1987 | { |
37fcafe6 DE |
1988 | /* Non-zero if doing a relocatable link. */ |
1989 | int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC)); | |
1990 | ||
1991 | if (! swap_out_syms (abfd, &strtab, relocatable_p)) | |
ede4eed4 KR |
1992 | return false; |
1993 | } | |
1994 | ||
1995 | shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; | |
1996 | /* sh_name was set in prep_headers. */ | |
1997 | shstrtab_hdr->sh_type = SHT_STRTAB; | |
1998 | shstrtab_hdr->sh_flags = 0; | |
1999 | shstrtab_hdr->sh_addr = 0; | |
2000 | shstrtab_hdr->sh_size = _bfd_stringtab_size (elf_shstrtab (abfd)); | |
2001 | shstrtab_hdr->sh_entsize = 0; | |
2002 | shstrtab_hdr->sh_link = 0; | |
2003 | shstrtab_hdr->sh_info = 0; | |
fd0198f0 | 2004 | /* sh_offset is set in assign_file_positions_except_relocs. */ |
ede4eed4 KR |
2005 | shstrtab_hdr->sh_addralign = 1; |
2006 | ||
fd0198f0 | 2007 | if (!assign_file_positions_except_relocs (abfd)) |
ede4eed4 KR |
2008 | return false; |
2009 | ||
fd0198f0 | 2010 | if (link_info == NULL && abfd->symcount > 0) |
ede4eed4 | 2011 | { |
fd0198f0 ILT |
2012 | file_ptr off; |
2013 | Elf_Internal_Shdr *hdr; | |
2014 | ||
2015 | off = elf_tdata (abfd)->next_file_pos; | |
2016 | ||
2017 | hdr = &elf_tdata (abfd)->symtab_hdr; | |
2018 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); | |
2019 | ||
2020 | hdr = &elf_tdata (abfd)->strtab_hdr; | |
2021 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); | |
2022 | ||
2023 | elf_tdata (abfd)->next_file_pos = off; | |
2024 | ||
ede4eed4 KR |
2025 | /* Now that we know where the .strtab section goes, write it |
2026 | out. */ | |
fd0198f0 | 2027 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 |
ede4eed4 KR |
2028 | || ! _bfd_stringtab_emit (abfd, strtab)) |
2029 | return false; | |
2030 | _bfd_stringtab_free (strtab); | |
2031 | } | |
2032 | ||
2033 | abfd->output_has_begun = true; | |
2034 | ||
2035 | return true; | |
2036 | } | |
2037 | ||
fd0198f0 | 2038 | /* Create a mapping from a set of sections to a program segment. */ |
ede4eed4 | 2039 | |
fd0198f0 | 2040 | static INLINE struct elf_segment_map * |
edf3fe48 | 2041 | make_mapping (abfd, sections, from, to, phdr) |
fd0198f0 ILT |
2042 | bfd *abfd; |
2043 | asection **sections; | |
2044 | unsigned int from; | |
2045 | unsigned int to; | |
edf3fe48 | 2046 | boolean phdr; |
ede4eed4 | 2047 | { |
fd0198f0 ILT |
2048 | struct elf_segment_map *m; |
2049 | unsigned int i; | |
2050 | asection **hdrpp; | |
2051 | ||
2052 | m = ((struct elf_segment_map *) | |
2053 | bfd_zalloc (abfd, | |
2054 | (sizeof (struct elf_segment_map) | |
2055 | + (to - from - 1) * sizeof (asection *)))); | |
2056 | if (m == NULL) | |
a9713b91 | 2057 | return NULL; |
fd0198f0 ILT |
2058 | m->next = NULL; |
2059 | m->p_type = PT_LOAD; | |
2060 | for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++) | |
2061 | m->sections[i - from] = *hdrpp; | |
2062 | m->count = to - from; | |
2063 | ||
edf3fe48 | 2064 | if (from == 0 && phdr) |
6933148a ILT |
2065 | { |
2066 | /* Include the headers in the first PT_LOAD segment. */ | |
2067 | m->includes_filehdr = 1; | |
2068 | m->includes_phdrs = 1; | |
2069 | } | |
2070 | ||
fd0198f0 | 2071 | return m; |
ede4eed4 KR |
2072 | } |
2073 | ||
fd0198f0 | 2074 | /* Set up a mapping from BFD sections to program segments. */ |
ede4eed4 | 2075 | |
fd0198f0 ILT |
2076 | static boolean |
2077 | map_sections_to_segments (abfd) | |
2078 | bfd *abfd; | |
ede4eed4 | 2079 | { |
fd0198f0 ILT |
2080 | asection **sections = NULL; |
2081 | asection *s; | |
2082 | unsigned int i; | |
2083 | unsigned int count; | |
2084 | struct elf_segment_map *mfirst; | |
2085 | struct elf_segment_map **pm; | |
2086 | struct elf_segment_map *m; | |
2087 | asection *last_hdr; | |
2088 | unsigned int phdr_index; | |
2089 | bfd_vma maxpagesize; | |
2090 | asection **hdrpp; | |
9e7e5d5e | 2091 | boolean phdr_in_segment = true; |
edf3fe48 ILT |
2092 | boolean writable; |
2093 | asection *dynsec; | |
fd0198f0 ILT |
2094 | |
2095 | if (elf_tdata (abfd)->segment_map != NULL) | |
2096 | return true; | |
2097 | ||
2098 | if (bfd_count_sections (abfd) == 0) | |
2099 | return true; | |
2100 | ||
2101 | /* Select the allocated sections, and sort them. */ | |
2102 | ||
58142f10 ILT |
2103 | sections = (asection **) bfd_malloc (bfd_count_sections (abfd) |
2104 | * sizeof (asection *)); | |
fd0198f0 | 2105 | if (sections == NULL) |
58142f10 | 2106 | goto error_return; |
ede4eed4 | 2107 | |
fd0198f0 ILT |
2108 | i = 0; |
2109 | for (s = abfd->sections; s != NULL; s = s->next) | |
2110 | { | |
2111 | if ((s->flags & SEC_ALLOC) != 0) | |
2112 | { | |
2113 | sections[i] = s; | |
2114 | ++i; | |
2115 | } | |
5fe14a9f | 2116 | } |
fd0198f0 ILT |
2117 | BFD_ASSERT (i <= bfd_count_sections (abfd)); |
2118 | count = i; | |
ede4eed4 | 2119 | |
fd0198f0 | 2120 | qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); |
ede4eed4 | 2121 | |
fd0198f0 | 2122 | /* Build the mapping. */ |
ede4eed4 | 2123 | |
fd0198f0 ILT |
2124 | mfirst = NULL; |
2125 | pm = &mfirst; | |
ede4eed4 | 2126 | |
fd0198f0 ILT |
2127 | /* If we have a .interp section, then create a PT_PHDR segment for |
2128 | the program headers and a PT_INTERP segment for the .interp | |
2129 | section. */ | |
2130 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2131 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
2132 | { | |
2133 | m = ((struct elf_segment_map *) | |
2134 | bfd_zalloc (abfd, sizeof (struct elf_segment_map))); | |
2135 | if (m == NULL) | |
a9713b91 | 2136 | goto error_return; |
fd0198f0 ILT |
2137 | m->next = NULL; |
2138 | m->p_type = PT_PHDR; | |
2139 | /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ | |
2140 | m->p_flags = PF_R | PF_X; | |
2141 | m->p_flags_valid = 1; | |
6933148a | 2142 | m->includes_phdrs = 1; |
ede4eed4 | 2143 | |
fd0198f0 ILT |
2144 | *pm = m; |
2145 | pm = &m->next; | |
ede4eed4 | 2146 | |
fd0198f0 ILT |
2147 | m = ((struct elf_segment_map *) |
2148 | bfd_zalloc (abfd, sizeof (struct elf_segment_map))); | |
2149 | if (m == NULL) | |
a9713b91 | 2150 | goto error_return; |
fd0198f0 ILT |
2151 | m->next = NULL; |
2152 | m->p_type = PT_INTERP; | |
2153 | m->count = 1; | |
2154 | m->sections[0] = s; | |
ede4eed4 | 2155 | |
fd0198f0 ILT |
2156 | *pm = m; |
2157 | pm = &m->next; | |
2158 | } | |
ede4eed4 | 2159 | |
fd0198f0 ILT |
2160 | /* Look through the sections. We put sections in the same program |
2161 | segment when the start of the second section can be placed within | |
2162 | a few bytes of the end of the first section. */ | |
2163 | last_hdr = NULL; | |
2164 | phdr_index = 0; | |
2165 | maxpagesize = get_elf_backend_data (abfd)->maxpagesize; | |
edf3fe48 ILT |
2166 | writable = false; |
2167 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
2168 | if (dynsec != NULL | |
2169 | && (dynsec->flags & SEC_LOAD) == 0) | |
2170 | dynsec = NULL; | |
2171 | ||
7fc6a16a ILT |
2172 | /* Deal with -Ttext or something similar such that the first section |
2173 | is not adjacent to the program headers. This is an | |
2174 | approximation, since at this point we don't know exactly how many | |
2175 | program headers we will need. */ | |
2176 | if (count > 0) | |
2177 | { | |
2178 | bfd_size_type phdr_size; | |
2179 | ||
2180 | phdr_size = elf_tdata (abfd)->program_header_size; | |
2181 | if (phdr_size == 0) | |
2182 | phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr; | |
cdb88e87 | 2183 | if ((abfd->flags & D_PAGED) == 0 |
303b4cc6 | 2184 | || sections[0]->lma < phdr_size |
cdb88e87 | 2185 | || sections[0]->lma % maxpagesize < phdr_size % maxpagesize) |
9e7e5d5e | 2186 | phdr_in_segment = false; |
7fc6a16a | 2187 | } |
edf3fe48 | 2188 | |
fd0198f0 | 2189 | for (i = 0, hdrpp = sections; i < count; i++, hdrpp++) |
ede4eed4 | 2190 | { |
fd0198f0 | 2191 | asection *hdr; |
191d910c | 2192 | boolean new_segment; |
ede4eed4 | 2193 | |
fd0198f0 | 2194 | hdr = *hdrpp; |
ede4eed4 | 2195 | |
fd0198f0 | 2196 | /* See if this section and the last one will fit in the same |
191d910c ILT |
2197 | segment. */ |
2198 | ||
2199 | if (last_hdr == NULL) | |
2200 | { | |
2201 | /* If we don't have a segment yet, then we don't need a new | |
2202 | one (we build the last one after this loop). */ | |
2203 | new_segment = false; | |
2204 | } | |
2205 | else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma) | |
2206 | { | |
2207 | /* If this section has a different relation between the | |
2208 | virtual address and the load address, then we need a new | |
2209 | segment. */ | |
2210 | new_segment = true; | |
2211 | } | |
191d910c | 2212 | else if (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize) |
76af94b9 | 2213 | < BFD_ALIGN (hdr->lma, maxpagesize)) |
191d910c ILT |
2214 | { |
2215 | /* If putting this section in this segment would force us to | |
2216 | skip a page in the segment, then we need a new segment. */ | |
2217 | new_segment = true; | |
2218 | } | |
2219 | else if ((last_hdr->flags & SEC_LOAD) == 0 | |
2220 | && (hdr->flags & SEC_LOAD) != 0) | |
2221 | { | |
2222 | /* We don't want to put a loadable section after a | |
2223 | nonloadable section in the same segment. */ | |
2224 | new_segment = true; | |
2225 | } | |
c63729b5 ILT |
2226 | else if ((abfd->flags & D_PAGED) == 0) |
2227 | { | |
2228 | /* If the file is not demand paged, which means that we | |
2229 | don't require the sections to be correctly aligned in the | |
2230 | file, then there is no other reason for a new segment. */ | |
2231 | new_segment = false; | |
2232 | } | |
191d910c ILT |
2233 | else if (! writable |
2234 | && (hdr->flags & SEC_READONLY) == 0 | |
2235 | && (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize) | |
2236 | == hdr->lma)) | |
2237 | { | |
2238 | /* We don't want to put a writable section in a read only | |
2239 | segment, unless they are on the same page in memory | |
2240 | anyhow. We already know that the last section does not | |
2241 | bring us past the current section on the page, so the | |
2242 | only case in which the new section is not on the same | |
2243 | page as the previous section is when the previous section | |
2244 | ends precisely on a page boundary. */ | |
2245 | new_segment = true; | |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | /* Otherwise, we can use the same segment. */ | |
2250 | new_segment = false; | |
2251 | } | |
2252 | ||
2253 | if (! new_segment) | |
fd0198f0 | 2254 | { |
50bd50d4 MH |
2255 | if ((hdr->flags & SEC_READONLY) == 0) |
2256 | writable = true; | |
fd0198f0 ILT |
2257 | last_hdr = hdr; |
2258 | continue; | |
2259 | } | |
ede4eed4 | 2260 | |
191d910c ILT |
2261 | /* We need a new program segment. We must create a new program |
2262 | header holding all the sections from phdr_index until hdr. */ | |
ede4eed4 | 2263 | |
9e7e5d5e | 2264 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); |
fd0198f0 ILT |
2265 | if (m == NULL) |
2266 | goto error_return; | |
ede4eed4 | 2267 | |
fd0198f0 ILT |
2268 | *pm = m; |
2269 | pm = &m->next; | |
ede4eed4 | 2270 | |
edf3fe48 ILT |
2271 | if ((hdr->flags & SEC_READONLY) == 0) |
2272 | writable = true; | |
50bd50d4 MH |
2273 | else |
2274 | writable = false; | |
edf3fe48 | 2275 | |
fd0198f0 ILT |
2276 | last_hdr = hdr; |
2277 | phdr_index = i; | |
9e7e5d5e | 2278 | phdr_in_segment = false; |
ede4eed4 | 2279 | } |
fd0198f0 ILT |
2280 | |
2281 | /* Create a final PT_LOAD program segment. */ | |
2282 | if (last_hdr != NULL) | |
ede4eed4 | 2283 | { |
9e7e5d5e | 2284 | m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment); |
fd0198f0 ILT |
2285 | if (m == NULL) |
2286 | goto error_return; | |
2287 | ||
2288 | *pm = m; | |
2289 | pm = &m->next; | |
ede4eed4 KR |
2290 | } |
2291 | ||
fd0198f0 | 2292 | /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */ |
edf3fe48 | 2293 | if (dynsec != NULL) |
ede4eed4 | 2294 | { |
fd0198f0 ILT |
2295 | m = ((struct elf_segment_map *) |
2296 | bfd_zalloc (abfd, sizeof (struct elf_segment_map))); | |
2297 | if (m == NULL) | |
a9713b91 | 2298 | goto error_return; |
fd0198f0 ILT |
2299 | m->next = NULL; |
2300 | m->p_type = PT_DYNAMIC; | |
2301 | m->count = 1; | |
edf3fe48 | 2302 | m->sections[0] = dynsec; |
ede4eed4 | 2303 | |
fd0198f0 ILT |
2304 | *pm = m; |
2305 | pm = &m->next; | |
ede4eed4 KR |
2306 | } |
2307 | ||
a66a61a0 ILT |
2308 | /* For each loadable .note section, add a PT_NOTE segment. We don't |
2309 | use bfd_get_section_by_name, because if we link together | |
2310 | nonloadable .note sections and loadable .note sections, we will | |
2311 | generate two .note sections in the output file. FIXME: Using | |
2312 | names for section types is bogus anyhow. */ | |
2313 | for (s = abfd->sections; s != NULL; s = s->next) | |
2314 | { | |
2315 | if ((s->flags & SEC_LOAD) != 0 | |
2316 | && strncmp (s->name, ".note", 5) == 0) | |
2317 | { | |
2318 | m = ((struct elf_segment_map *) | |
2319 | bfd_zalloc (abfd, sizeof (struct elf_segment_map))); | |
2320 | if (m == NULL) | |
2321 | goto error_return; | |
2322 | m->next = NULL; | |
2323 | m->p_type = PT_NOTE; | |
2324 | m->count = 1; | |
2325 | m->sections[0] = s; | |
2326 | ||
2327 | *pm = m; | |
2328 | pm = &m->next; | |
2329 | } | |
2330 | } | |
2331 | ||
fd0198f0 ILT |
2332 | free (sections); |
2333 | sections = NULL; | |
ae115e51 | 2334 | |
fd0198f0 ILT |
2335 | elf_tdata (abfd)->segment_map = mfirst; |
2336 | return true; | |
2337 | ||
2338 | error_return: | |
2339 | if (sections != NULL) | |
2340 | free (sections); | |
2341 | return false; | |
ede4eed4 KR |
2342 | } |
2343 | ||
9e7e5d5e | 2344 | /* Sort sections by address. */ |
ede4eed4 | 2345 | |
fd0198f0 ILT |
2346 | static int |
2347 | elf_sort_sections (arg1, arg2) | |
2348 | const PTR arg1; | |
2349 | const PTR arg2; | |
ede4eed4 | 2350 | { |
fd0198f0 ILT |
2351 | const asection *sec1 = *(const asection **) arg1; |
2352 | const asection *sec2 = *(const asection **) arg2; | |
ede4eed4 | 2353 | |
40afcc4c NC |
2354 | /* Sort by LMA first, since this is the address used to |
2355 | place the section into a segment. */ | |
2356 | if (sec1->lma < sec2->lma) | |
fd0198f0 | 2357 | return -1; |
40afcc4c | 2358 | else if (sec1->lma > sec2->lma) |
fd0198f0 | 2359 | return 1; |
ede4eed4 | 2360 | |
9e7e5d5e NC |
2361 | /* Then sort by VMA. Normally the LMA and the VMA will be |
2362 | the same, and this will do nothing. */ | |
40afcc4c | 2363 | if (sec1->vma < sec2->vma) |
cdb88e87 | 2364 | return -1; |
40afcc4c | 2365 | else if (sec1->vma > sec2->vma) |
cdb88e87 ILT |
2366 | return 1; |
2367 | ||
fd0198f0 | 2368 | /* Put !SEC_LOAD sections after SEC_LOAD ones. */ |
ede4eed4 | 2369 | |
fd0198f0 | 2370 | #define TOEND(x) (((x)->flags & SEC_LOAD) == 0) |
ede4eed4 | 2371 | |
fd0198f0 | 2372 | if (TOEND (sec1)) |
f6727b90 ILT |
2373 | { |
2374 | if (TOEND (sec2)) | |
2375 | return sec1->target_index - sec2->target_index; | |
2376 | else | |
2377 | return 1; | |
2378 | } | |
ede4eed4 | 2379 | |
fd0198f0 ILT |
2380 | if (TOEND (sec2)) |
2381 | return -1; | |
ede4eed4 | 2382 | |
fd0198f0 | 2383 | #undef TOEND |
ede4eed4 | 2384 | |
fd0198f0 ILT |
2385 | /* Sort by size, to put zero sized sections before others at the |
2386 | same address. */ | |
ede4eed4 | 2387 | |
fd0198f0 ILT |
2388 | if (sec1->_raw_size < sec2->_raw_size) |
2389 | return -1; | |
2390 | if (sec1->_raw_size > sec2->_raw_size) | |
2391 | return 1; | |
ede4eed4 | 2392 | |
fd0198f0 ILT |
2393 | return sec1->target_index - sec2->target_index; |
2394 | } | |
ede4eed4 | 2395 | |
fd0198f0 ILT |
2396 | /* Assign file positions to the sections based on the mapping from |
2397 | sections to segments. This function also sets up some fields in | |
2398 | the file header, and writes out the program headers. */ | |
ede4eed4 | 2399 | |
fd0198f0 ILT |
2400 | static boolean |
2401 | assign_file_positions_for_segments (abfd) | |
2402 | bfd *abfd; | |
2403 | { | |
2404 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2405 | unsigned int count; | |
2406 | struct elf_segment_map *m; | |
2407 | unsigned int alloc; | |
2408 | Elf_Internal_Phdr *phdrs; | |
64f808f9 | 2409 | file_ptr off, voff; |
6933148a ILT |
2410 | bfd_vma filehdr_vaddr, filehdr_paddr; |
2411 | bfd_vma phdrs_vaddr, phdrs_paddr; | |
fd0198f0 ILT |
2412 | Elf_Internal_Phdr *p; |
2413 | ||
2414 | if (elf_tdata (abfd)->segment_map == NULL) | |
2415 | { | |
2416 | if (! map_sections_to_segments (abfd)) | |
2417 | return false; | |
2418 | } | |
ede4eed4 | 2419 | |
5b3b9ff6 ILT |
2420 | if (bed->elf_backend_modify_segment_map) |
2421 | { | |
2422 | if (! (*bed->elf_backend_modify_segment_map) (abfd)) | |
2423 | return false; | |
2424 | } | |
2425 | ||
fd0198f0 ILT |
2426 | count = 0; |
2427 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2428 | ++count; | |
ede4eed4 | 2429 | |
fd0198f0 ILT |
2430 | elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; |
2431 | elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; | |
2432 | elf_elfheader (abfd)->e_phnum = count; | |
ede4eed4 | 2433 | |
fd0198f0 ILT |
2434 | if (count == 0) |
2435 | return true; | |
ede4eed4 | 2436 | |
fd0198f0 ILT |
2437 | /* If we already counted the number of program segments, make sure |
2438 | that we allocated enough space. This happens when SIZEOF_HEADERS | |
2439 | is used in a linker script. */ | |
2440 | alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr; | |
2441 | if (alloc != 0 && count > alloc) | |
2442 | { | |
2443 | ((*_bfd_error_handler) | |
53d3ce37 | 2444 | (_("%s: Not enough room for program headers (allocated %u, need %u)"), |
fd0198f0 ILT |
2445 | bfd_get_filename (abfd), alloc, count)); |
2446 | bfd_set_error (bfd_error_bad_value); | |
2447 | return false; | |
ede4eed4 KR |
2448 | } |
2449 | ||
fd0198f0 ILT |
2450 | if (alloc == 0) |
2451 | alloc = count; | |
2452 | ||
2453 | phdrs = ((Elf_Internal_Phdr *) | |
2454 | bfd_alloc (abfd, alloc * sizeof (Elf_Internal_Phdr))); | |
2455 | if (phdrs == NULL) | |
a9713b91 | 2456 | return false; |
ede4eed4 | 2457 | |
fd0198f0 ILT |
2458 | off = bed->s->sizeof_ehdr; |
2459 | off += alloc * bed->s->sizeof_phdr; | |
ede4eed4 | 2460 | |
6933148a ILT |
2461 | filehdr_vaddr = 0; |
2462 | filehdr_paddr = 0; | |
2463 | phdrs_vaddr = 0; | |
2464 | phdrs_paddr = 0; | |
9e7e5d5e | 2465 | |
fd0198f0 ILT |
2466 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; |
2467 | m != NULL; | |
2468 | m = m->next, p++) | |
2469 | { | |
2470 | unsigned int i; | |
2471 | asection **secpp; | |
fd0198f0 | 2472 | |
3b950780 ILT |
2473 | /* If elf_segment_map is not from map_sections_to_segments, the |
2474 | sections may not be correctly ordered. */ | |
2475 | if (m->count > 0) | |
2476 | qsort (m->sections, (size_t) m->count, sizeof (asection *), | |
2477 | elf_sort_sections); | |
2478 | ||
fd0198f0 ILT |
2479 | p->p_type = m->p_type; |
2480 | ||
2481 | if (m->p_flags_valid) | |
2482 | p->p_flags = m->p_flags; | |
14899eb7 ILT |
2483 | else |
2484 | p->p_flags = 0; | |
fd0198f0 | 2485 | |
d49ddb85 ILT |
2486 | if (p->p_type == PT_LOAD |
2487 | && m->count > 0 | |
d7775b43 | 2488 | && (m->sections[0]->flags & SEC_ALLOC) != 0) |
cdb88e87 ILT |
2489 | { |
2490 | if ((abfd->flags & D_PAGED) != 0) | |
2491 | off += (m->sections[0]->vma - off) % bed->maxpagesize; | |
2492 | else | |
2493 | off += ((m->sections[0]->vma - off) | |
2494 | % (1 << bfd_get_section_alignment (abfd, m->sections[0]))); | |
2495 | } | |
44ef8897 | 2496 | |
fd0198f0 ILT |
2497 | if (m->count == 0) |
2498 | p->p_vaddr = 0; | |
2499 | else | |
2500 | p->p_vaddr = m->sections[0]->vma; | |
ede4eed4 | 2501 | |
fd0198f0 ILT |
2502 | if (m->p_paddr_valid) |
2503 | p->p_paddr = m->p_paddr; | |
2504 | else if (m->count == 0) | |
2505 | p->p_paddr = 0; | |
2506 | else | |
2507 | p->p_paddr = m->sections[0]->lma; | |
2508 | ||
cdb88e87 ILT |
2509 | if (p->p_type == PT_LOAD |
2510 | && (abfd->flags & D_PAGED) != 0) | |
fd0198f0 ILT |
2511 | p->p_align = bed->maxpagesize; |
2512 | else if (m->count == 0) | |
2513 | p->p_align = bed->s->file_align; | |
2514 | else | |
2515 | p->p_align = 0; | |
2516 | ||
6933148a | 2517 | p->p_offset = 0; |
fd0198f0 ILT |
2518 | p->p_filesz = 0; |
2519 | p->p_memsz = 0; | |
9e7e5d5e | 2520 | |
6933148a | 2521 | if (m->includes_filehdr) |
ede4eed4 | 2522 | { |
14899eb7 ILT |
2523 | if (! m->p_flags_valid) |
2524 | p->p_flags |= PF_R; | |
6933148a ILT |
2525 | p->p_offset = 0; |
2526 | p->p_filesz = bed->s->sizeof_ehdr; | |
2527 | p->p_memsz = bed->s->sizeof_ehdr; | |
2528 | if (m->count > 0) | |
2529 | { | |
2530 | BFD_ASSERT (p->p_type == PT_LOAD); | |
20b2c808 | 2531 | |
f6727b90 | 2532 | if (p->p_vaddr < (bfd_vma) off) |
20b2c808 | 2533 | { |
53d3ce37 | 2534 | _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"), |
20b2c808 DE |
2535 | bfd_get_filename (abfd)); |
2536 | bfd_set_error (bfd_error_bad_value); | |
2537 | return false; | |
2538 | } | |
2539 | ||
6933148a ILT |
2540 | p->p_vaddr -= off; |
2541 | if (! m->p_paddr_valid) | |
2542 | p->p_paddr -= off; | |
2543 | } | |
2544 | if (p->p_type == PT_LOAD) | |
2545 | { | |
2546 | filehdr_vaddr = p->p_vaddr; | |
2547 | filehdr_paddr = p->p_paddr; | |
2548 | } | |
2549 | } | |
fd0198f0 | 2550 | |
6933148a ILT |
2551 | if (m->includes_phdrs) |
2552 | { | |
14899eb7 ILT |
2553 | if (! m->p_flags_valid) |
2554 | p->p_flags |= PF_R; | |
9e7e5d5e | 2555 | |
6933148a | 2556 | if (m->includes_filehdr) |
fd0198f0 | 2557 | { |
6933148a | 2558 | if (p->p_type == PT_LOAD) |
fd0198f0 | 2559 | { |
6933148a ILT |
2560 | phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr; |
2561 | phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr; | |
fd0198f0 | 2562 | } |
6933148a ILT |
2563 | } |
2564 | else | |
2565 | { | |
2566 | p->p_offset = bed->s->sizeof_ehdr; | |
9e7e5d5e | 2567 | |
6933148a ILT |
2568 | if (m->count > 0) |
2569 | { | |
2570 | BFD_ASSERT (p->p_type == PT_LOAD); | |
2571 | p->p_vaddr -= off - p->p_offset; | |
2572 | if (! m->p_paddr_valid) | |
2573 | p->p_paddr -= off - p->p_offset; | |
2574 | } | |
9e7e5d5e | 2575 | |
6933148a | 2576 | if (p->p_type == PT_LOAD) |
fd0198f0 | 2577 | { |
6933148a ILT |
2578 | phdrs_vaddr = p->p_vaddr; |
2579 | phdrs_paddr = p->p_paddr; | |
fd0198f0 | 2580 | } |
9e7e5d5e NC |
2581 | else |
2582 | phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr; | |
6933148a | 2583 | } |
9e7e5d5e | 2584 | |
6933148a ILT |
2585 | p->p_filesz += alloc * bed->s->sizeof_phdr; |
2586 | p->p_memsz += alloc * bed->s->sizeof_phdr; | |
2587 | } | |
2588 | ||
2589 | if (p->p_type == PT_LOAD) | |
2590 | { | |
2591 | if (! m->includes_filehdr && ! m->includes_phdrs) | |
2592 | p->p_offset = off; | |
2593 | else | |
2594 | { | |
2595 | file_ptr adjust; | |
fd0198f0 | 2596 | |
6933148a ILT |
2597 | adjust = off - (p->p_offset + p->p_filesz); |
2598 | p->p_filesz += adjust; | |
2599 | p->p_memsz += adjust; | |
fd0198f0 | 2600 | } |
ede4eed4 KR |
2601 | } |
2602 | ||
64f808f9 | 2603 | voff = off; |
9e7e5d5e | 2604 | |
fd0198f0 | 2605 | for (i = 0, secpp = m->sections; i < m->count; i++, secpp++) |
ede4eed4 | 2606 | { |
fd0198f0 ILT |
2607 | asection *sec; |
2608 | flagword flags; | |
2609 | bfd_size_type align; | |
2610 | ||
2611 | sec = *secpp; | |
2612 | flags = sec->flags; | |
cdb88e87 | 2613 | align = 1 << bfd_get_section_alignment (abfd, sec); |
fd0198f0 | 2614 | |
e5fc7809 NC |
2615 | /* The section may have artificial alignment forced by a |
2616 | link script. Notice this case by the gap between the | |
2617 | cumulative phdr vma and the section's vma. */ | |
2618 | if (p->p_vaddr + p->p_memsz < sec->vma) | |
2619 | { | |
2620 | bfd_vma adjust = sec->vma - (p->p_vaddr + p->p_memsz); | |
2621 | ||
2622 | p->p_memsz += adjust; | |
2623 | off += adjust; | |
2624 | voff += adjust; | |
2625 | if ((flags & SEC_LOAD) != 0) | |
2626 | p->p_filesz += adjust; | |
2627 | } | |
2628 | ||
fd0198f0 ILT |
2629 | if (p->p_type == PT_LOAD) |
2630 | { | |
9e7e5d5e NC |
2631 | bfd_signed_vma adjust; |
2632 | ||
c63729b5 | 2633 | if ((flags & SEC_LOAD) != 0) |
9e7e5d5e NC |
2634 | { |
2635 | adjust = sec->lma - (p->p_paddr + p->p_memsz); | |
2636 | if (adjust < 0) | |
2637 | adjust = 0; | |
2638 | } | |
c63729b5 | 2639 | else if ((flags & SEC_ALLOC) != 0) |
fd0198f0 | 2640 | { |
c63729b5 ILT |
2641 | /* The section VMA must equal the file position |
2642 | modulo the page size. FIXME: I'm not sure if | |
2643 | this adjustment is really necessary. We used to | |
2644 | not have the SEC_LOAD case just above, and then | |
2645 | this was necessary, but now I'm not sure. */ | |
cdb88e87 ILT |
2646 | if ((abfd->flags & D_PAGED) != 0) |
2647 | adjust = (sec->vma - voff) % bed->maxpagesize; | |
2648 | else | |
2649 | adjust = (sec->vma - voff) % align; | |
c63729b5 | 2650 | } |
f6727b90 ILT |
2651 | else |
2652 | adjust = 0; | |
c63729b5 ILT |
2653 | |
2654 | if (adjust != 0) | |
2655 | { | |
2656 | if (i == 0) | |
9e7e5d5e NC |
2657 | { |
2658 | (* _bfd_error_handler) | |
2659 | (_("Error: First section in segment (%s) starts at 0x%x"), | |
2660 | bfd_section_name (abfd, sec), sec->lma); | |
2661 | (* _bfd_error_handler) | |
2662 | (_(" whereas segment starts at 0x%x"), | |
2663 | p->p_paddr); | |
2664 | ||
2665 | return false; | |
2666 | } | |
c63729b5 ILT |
2667 | p->p_memsz += adjust; |
2668 | off += adjust; | |
2669 | voff += adjust; | |
2670 | if ((flags & SEC_LOAD) != 0) | |
2671 | p->p_filesz += adjust; | |
fd0198f0 ILT |
2672 | } |
2673 | ||
2674 | sec->filepos = off; | |
2675 | ||
c63729b5 ILT |
2676 | /* We check SEC_HAS_CONTENTS here because if NOLOAD is |
2677 | used in a linker script we may have a section with | |
2678 | SEC_LOAD clear but which is supposed to have | |
2679 | contents. */ | |
2680 | if ((flags & SEC_LOAD) != 0 | |
2681 | || (flags & SEC_HAS_CONTENTS) != 0) | |
fd0198f0 | 2682 | off += sec->_raw_size; |
9e7e5d5e | 2683 | |
64f808f9 ILT |
2684 | if ((flags & SEC_ALLOC) != 0) |
2685 | voff += sec->_raw_size; | |
fd0198f0 ILT |
2686 | } |
2687 | ||
2688 | p->p_memsz += sec->_raw_size; | |
2689 | ||
2690 | if ((flags & SEC_LOAD) != 0) | |
2691 | p->p_filesz += sec->_raw_size; | |
2692 | ||
fd0198f0 ILT |
2693 | if (align > p->p_align) |
2694 | p->p_align = align; | |
2695 | ||
2696 | if (! m->p_flags_valid) | |
2697 | { | |
14899eb7 | 2698 | p->p_flags |= PF_R; |
fd0198f0 ILT |
2699 | if ((flags & SEC_CODE) != 0) |
2700 | p->p_flags |= PF_X; | |
2701 | if ((flags & SEC_READONLY) == 0) | |
2702 | p->p_flags |= PF_W; | |
2703 | } | |
ede4eed4 | 2704 | } |
fd0198f0 | 2705 | } |
ede4eed4 | 2706 | |
fd0198f0 ILT |
2707 | /* Now that we have set the section file positions, we can set up |
2708 | the file positions for the non PT_LOAD segments. */ | |
2709 | for (m = elf_tdata (abfd)->segment_map, p = phdrs; | |
2710 | m != NULL; | |
2711 | m = m->next, p++) | |
2712 | { | |
2713 | if (p->p_type != PT_LOAD && m->count > 0) | |
ede4eed4 | 2714 | { |
6933148a ILT |
2715 | BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs); |
2716 | p->p_offset = m->sections[0]->filepos; | |
2717 | } | |
2718 | if (m->count == 0) | |
2719 | { | |
2720 | if (m->includes_filehdr) | |
2721 | { | |
2722 | p->p_vaddr = filehdr_vaddr; | |
2723 | if (! m->p_paddr_valid) | |
2724 | p->p_paddr = filehdr_paddr; | |
2725 | } | |
2726 | else if (m->includes_phdrs) | |
2727 | { | |
2728 | p->p_vaddr = phdrs_vaddr; | |
2729 | if (! m->p_paddr_valid) | |
2730 | p->p_paddr = phdrs_paddr; | |
2731 | } | |
ede4eed4 | 2732 | } |
ede4eed4 KR |
2733 | } |
2734 | ||
fd0198f0 ILT |
2735 | /* Clear out any program headers we allocated but did not use. */ |
2736 | for (; count < alloc; count++, p++) | |
ede4eed4 | 2737 | { |
fd0198f0 ILT |
2738 | memset (p, 0, sizeof *p); |
2739 | p->p_type = PT_NULL; | |
ede4eed4 KR |
2740 | } |
2741 | ||
fd0198f0 | 2742 | elf_tdata (abfd)->phdr = phdrs; |
ede4eed4 | 2743 | |
fd0198f0 | 2744 | elf_tdata (abfd)->next_file_pos = off; |
ede4eed4 | 2745 | |
fd0198f0 ILT |
2746 | /* Write out the program headers. */ |
2747 | if (bfd_seek (abfd, bed->s->sizeof_ehdr, SEEK_SET) != 0 | |
2748 | || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0) | |
2749 | return false; | |
2750 | ||
2751 | return true; | |
2752 | } | |
2753 | ||
2754 | /* Get the size of the program header. | |
2755 | ||
2756 | If this is called by the linker before any of the section VMA's are set, it | |
2757 | can't calculate the correct value for a strange memory layout. This only | |
2758 | happens when SIZEOF_HEADERS is used in a linker script. In this case, | |
2759 | SORTED_HDRS is NULL and we assume the normal scenario of one text and one | |
2760 | data segment (exclusive of .interp and .dynamic). | |
2761 | ||
2762 | ??? User written scripts must either not use SIZEOF_HEADERS, or assume there | |
2763 | will be two segments. */ | |
2764 | ||
2765 | static bfd_size_type | |
2766 | get_program_header_size (abfd) | |
2767 | bfd *abfd; | |
2768 | { | |
2769 | size_t segs; | |
2770 | asection *s; | |
2771 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2772 | ||
2773 | /* We can't return a different result each time we're called. */ | |
2774 | if (elf_tdata (abfd)->program_header_size != 0) | |
2775 | return elf_tdata (abfd)->program_header_size; | |
ae115e51 | 2776 | |
3b950780 ILT |
2777 | if (elf_tdata (abfd)->segment_map != NULL) |
2778 | { | |
2779 | struct elf_segment_map *m; | |
2780 | ||
2781 | segs = 0; | |
2782 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) | |
2783 | ++segs; | |
2784 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; | |
2785 | return elf_tdata (abfd)->program_header_size; | |
2786 | } | |
2787 | ||
fd0198f0 ILT |
2788 | /* Assume we will need exactly two PT_LOAD segments: one for text |
2789 | and one for data. */ | |
2790 | segs = 2; | |
2791 | ||
2792 | s = bfd_get_section_by_name (abfd, ".interp"); | |
2793 | if (s != NULL && (s->flags & SEC_LOAD) != 0) | |
ede4eed4 | 2794 | { |
fd0198f0 ILT |
2795 | /* If we have a loadable interpreter section, we need a |
2796 | PT_INTERP segment. In this case, assume we also need a | |
2797 | PT_PHDR segment, although that may not be true for all | |
2798 | targets. */ | |
2799 | segs += 2; | |
ede4eed4 KR |
2800 | } |
2801 | ||
fd0198f0 | 2802 | if (bfd_get_section_by_name (abfd, ".dynamic") != NULL) |
ede4eed4 | 2803 | { |
fd0198f0 ILT |
2804 | /* We need a PT_DYNAMIC segment. */ |
2805 | ++segs; | |
ede4eed4 | 2806 | } |
ede4eed4 | 2807 | |
a66a61a0 ILT |
2808 | for (s = abfd->sections; s != NULL; s = s->next) |
2809 | { | |
2810 | if ((s->flags & SEC_LOAD) != 0 | |
2811 | && strncmp (s->name, ".note", 5) == 0) | |
2812 | { | |
2813 | /* We need a PT_NOTE segment. */ | |
2814 | ++segs; | |
2815 | } | |
2816 | } | |
2817 | ||
fd0198f0 | 2818 | /* Let the backend count up any program headers it might need. */ |
5b3b9ff6 ILT |
2819 | if (bed->elf_backend_additional_program_headers) |
2820 | { | |
2821 | int a; | |
2822 | ||
2823 | a = (*bed->elf_backend_additional_program_headers) (abfd); | |
2824 | if (a == -1) | |
2825 | abort (); | |
2826 | segs += a; | |
2827 | } | |
ede4eed4 | 2828 | |
fd0198f0 ILT |
2829 | elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr; |
2830 | return elf_tdata (abfd)->program_header_size; | |
ede4eed4 KR |
2831 | } |
2832 | ||
2833 | /* Work out the file positions of all the sections. This is called by | |
2834 | _bfd_elf_compute_section_file_positions. All the section sizes and | |
2835 | VMAs must be known before this is called. | |
2836 | ||
2837 | We do not consider reloc sections at this point, unless they form | |
2838 | part of the loadable image. Reloc sections are assigned file | |
2839 | positions in assign_file_positions_for_relocs, which is called by | |
2840 | write_object_contents and final_link. | |
2841 | ||
fd0198f0 | 2842 | We also don't set the positions of the .symtab and .strtab here. */ |
ede4eed4 KR |
2843 | |
2844 | static boolean | |
fd0198f0 | 2845 | assign_file_positions_except_relocs (abfd) |
ede4eed4 | 2846 | bfd *abfd; |
ede4eed4 KR |
2847 | { |
2848 | struct elf_obj_tdata * const tdata = elf_tdata (abfd); | |
2849 | Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); | |
2850 | Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); | |
2851 | file_ptr off; | |
2852 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2853 | ||
ede4eed4 KR |
2854 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
2855 | { | |
2856 | Elf_Internal_Shdr **hdrpp; | |
2857 | unsigned int i; | |
2858 | ||
fd0198f0 ILT |
2859 | /* Start after the ELF header. */ |
2860 | off = i_ehdrp->e_ehsize; | |
2861 | ||
ede4eed4 KR |
2862 | /* We are not creating an executable, which means that we are |
2863 | not creating a program header, and that the actual order of | |
2864 | the sections in the file is unimportant. */ | |
2865 | for (i = 1, hdrpp = i_shdrpp + 1; i < i_ehdrp->e_shnum; i++, hdrpp++) | |
2866 | { | |
2867 | Elf_Internal_Shdr *hdr; | |
2868 | ||
2869 | hdr = *hdrpp; | |
2870 | if (hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA) | |
2871 | { | |
2872 | hdr->sh_offset = -1; | |
2873 | continue; | |
2874 | } | |
fd0198f0 ILT |
2875 | if (i == tdata->symtab_section |
2876 | || i == tdata->strtab_section) | |
ede4eed4 KR |
2877 | { |
2878 | hdr->sh_offset = -1; | |
2879 | continue; | |
2880 | } | |
2881 | ||
5fe14a9f | 2882 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); |
ede4eed4 KR |
2883 | } |
2884 | } | |
2885 | else | |
2886 | { | |
ede4eed4 | 2887 | unsigned int i; |
fd0198f0 | 2888 | Elf_Internal_Shdr **hdrpp; |
ede4eed4 | 2889 | |
fd0198f0 ILT |
2890 | /* Assign file positions for the loaded sections based on the |
2891 | assignment of sections to segments. */ | |
2892 | if (! assign_file_positions_for_segments (abfd)) | |
ede4eed4 KR |
2893 | return false; |
2894 | ||
fd0198f0 ILT |
2895 | /* Assign file positions for the other sections. */ |
2896 | ||
2897 | off = elf_tdata (abfd)->next_file_pos; | |
2898 | for (i = 1, hdrpp = i_shdrpp + 1; i < i_ehdrp->e_shnum; i++, hdrpp++) | |
ede4eed4 KR |
2899 | { |
2900 | Elf_Internal_Shdr *hdr; | |
2901 | ||
2902 | hdr = *hdrpp; | |
fd0198f0 ILT |
2903 | if (hdr->bfd_section != NULL |
2904 | && hdr->bfd_section->filepos != 0) | |
2905 | hdr->sh_offset = hdr->bfd_section->filepos; | |
2906 | else if ((hdr->sh_flags & SHF_ALLOC) != 0) | |
ede4eed4 | 2907 | { |
fd0198f0 | 2908 | ((*_bfd_error_handler) |
53d3ce37 | 2909 | (_("%s: warning: allocated section `%s' not in segment"), |
fd0198f0 ILT |
2910 | bfd_get_filename (abfd), |
2911 | (hdr->bfd_section == NULL | |
2912 | ? "*unknown*" | |
2913 | : hdr->bfd_section->name))); | |
cdb88e87 ILT |
2914 | if ((abfd->flags & D_PAGED) != 0) |
2915 | off += (hdr->sh_addr - off) % bed->maxpagesize; | |
2916 | else | |
2917 | off += (hdr->sh_addr - off) % hdr->sh_addralign; | |
5fe14a9f ILT |
2918 | off = _bfd_elf_assign_file_position_for_section (hdr, off, |
2919 | false); | |
ede4eed4 | 2920 | } |
fd0198f0 ILT |
2921 | else if (hdr->sh_type == SHT_REL |
2922 | || hdr->sh_type == SHT_RELA | |
2923 | || hdr == i_shdrpp[tdata->symtab_section] | |
2924 | || hdr == i_shdrpp[tdata->strtab_section]) | |
2925 | hdr->sh_offset = -1; | |
2926 | else | |
2927 | off = _bfd_elf_assign_file_position_for_section (hdr, off, true); | |
2928 | } | |
ede4eed4 KR |
2929 | } |
2930 | ||
2931 | /* Place the section headers. */ | |
2932 | off = align_file_position (off, bed->s->file_align); | |
2933 | i_ehdrp->e_shoff = off; | |
2934 | off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize; | |
2935 | ||
2936 | elf_tdata (abfd)->next_file_pos = off; | |
2937 | ||
2938 | return true; | |
2939 | } | |
2940 | ||
ede4eed4 KR |
2941 | static boolean |
2942 | prep_headers (abfd) | |
2943 | bfd *abfd; | |
2944 | { | |
2945 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ | |
9e7e5d5e | 2946 | Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ |
ede4eed4 KR |
2947 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ |
2948 | int count; | |
2949 | struct bfd_strtab_hash *shstrtab; | |
2950 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2951 | ||
2952 | i_ehdrp = elf_elfheader (abfd); | |
2953 | i_shdrp = elf_elfsections (abfd); | |
2954 | ||
2955 | shstrtab = _bfd_elf_stringtab_init (); | |
2956 | if (shstrtab == NULL) | |
2957 | return false; | |
2958 | ||
2959 | elf_shstrtab (abfd) = shstrtab; | |
2960 | ||
2961 | i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; | |
2962 | i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; | |
2963 | i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; | |
2964 | i_ehdrp->e_ident[EI_MAG3] = ELFMAG3; | |
2965 | ||
2966 | i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass; | |
2967 | i_ehdrp->e_ident[EI_DATA] = | |
86587dd4 | 2968 | bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB; |
ede4eed4 KR |
2969 | i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; |
2970 | ||
2971 | for (count = EI_PAD; count < EI_NIDENT; count++) | |
2972 | i_ehdrp->e_ident[count] = 0; | |
2973 | ||
2974 | if ((abfd->flags & DYNAMIC) != 0) | |
2975 | i_ehdrp->e_type = ET_DYN; | |
2976 | else if ((abfd->flags & EXEC_P) != 0) | |
2977 | i_ehdrp->e_type = ET_EXEC; | |
2978 | else | |
2979 | i_ehdrp->e_type = ET_REL; | |
2980 | ||
2981 | switch (bfd_get_arch (abfd)) | |
2982 | { | |
2983 | case bfd_arch_unknown: | |
2984 | i_ehdrp->e_machine = EM_NONE; | |
2985 | break; | |
2986 | case bfd_arch_sparc: | |
2987 | if (bed->s->arch_size == 64) | |
b356d4af | 2988 | i_ehdrp->e_machine = EM_SPARCV9; |
ede4eed4 KR |
2989 | else |
2990 | i_ehdrp->e_machine = EM_SPARC; | |
2991 | break; | |
2992 | case bfd_arch_i386: | |
2993 | i_ehdrp->e_machine = EM_386; | |
2994 | break; | |
2995 | case bfd_arch_m68k: | |
2996 | i_ehdrp->e_machine = EM_68K; | |
2997 | break; | |
2998 | case bfd_arch_m88k: | |
2999 | i_ehdrp->e_machine = EM_88K; | |
3000 | break; | |
3001 | case bfd_arch_i860: | |
3002 | i_ehdrp->e_machine = EM_860; | |
3003 | break; | |
3004 | case bfd_arch_mips: /* MIPS Rxxxx */ | |
3005 | i_ehdrp->e_machine = EM_MIPS; /* only MIPS R3000 */ | |
3006 | break; | |
3007 | case bfd_arch_hppa: | |
3008 | i_ehdrp->e_machine = EM_PARISC; | |
3009 | break; | |
3010 | case bfd_arch_powerpc: | |
3011 | i_ehdrp->e_machine = EM_PPC; | |
3012 | break; | |
50bd50d4 MH |
3013 | case bfd_arch_alpha: |
3014 | i_ehdrp->e_machine = EM_ALPHA; | |
3015 | break; | |
f0c12b73 DE |
3016 | case bfd_arch_sh: |
3017 | i_ehdrp->e_machine = EM_SH; | |
3018 | break; | |
50bd50d4 MH |
3019 | case bfd_arch_d10v: |
3020 | i_ehdrp->e_machine = EM_CYGNUS_D10V; | |
3021 | break; | |
fd8d7c31 MH |
3022 | /* start-sanitize-d30v */ |
3023 | case bfd_arch_d30v: | |
3024 | i_ehdrp->e_machine = EM_CYGNUS_D30V; | |
3025 | break; | |
3026 | /* end-sanitize-d30v */ | |
f0c12b73 | 3027 | case bfd_arch_v850: |
8988d935 NC |
3028 | switch (bfd_get_mach (abfd)) |
3029 | { | |
3030 | default: | |
3031 | case 0: i_ehdrp->e_machine = EM_CYGNUS_V850; break; | |
8988d935 | 3032 | } |
f0c12b73 | 3033 | break; |
8988d935 | 3034 | case bfd_arch_arc: |
ede4eed4 KR |
3035 | i_ehdrp->e_machine = EM_CYGNUS_ARC; |
3036 | break; | |
f0c12b73 DE |
3037 | case bfd_arch_m32r: |
3038 | i_ehdrp->e_machine = EM_CYGNUS_M32R; | |
3039 | break; | |
80be821d ILT |
3040 | case bfd_arch_mn10200: |
3041 | i_ehdrp->e_machine = EM_CYGNUS_MN10200; | |
3042 | break; | |
3043 | case bfd_arch_mn10300: | |
3044 | i_ehdrp->e_machine = EM_CYGNUS_MN10300; | |
efc2b064 | 3045 | break; |
ede4eed4 KR |
3046 | /* also note that EM_M32, AT&T WE32100 is unknown to bfd */ |
3047 | default: | |
3048 | i_ehdrp->e_machine = EM_NONE; | |
3049 | } | |
3050 | i_ehdrp->e_version = bed->s->ev_current; | |
3051 | i_ehdrp->e_ehsize = bed->s->sizeof_ehdr; | |
3052 | ||
3053 | /* no program header, for now. */ | |
3054 | i_ehdrp->e_phoff = 0; | |
3055 | i_ehdrp->e_phentsize = 0; | |
3056 | i_ehdrp->e_phnum = 0; | |
3057 | ||
3058 | /* each bfd section is section header entry */ | |
3059 | i_ehdrp->e_entry = bfd_get_start_address (abfd); | |
3060 | i_ehdrp->e_shentsize = bed->s->sizeof_shdr; | |
3061 | ||
3062 | /* if we're building an executable, we'll need a program header table */ | |
3063 | if (abfd->flags & EXEC_P) | |
3064 | { | |
3065 | /* it all happens later */ | |
3066 | #if 0 | |
3067 | i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr); | |
3068 | ||
3069 | /* elf_build_phdrs() returns a (NULL-terminated) array of | |
3070 | Elf_Internal_Phdrs */ | |
3071 | i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum); | |
3072 | i_ehdrp->e_phoff = outbase; | |
3073 | outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum; | |
3074 | #endif | |
3075 | } | |
3076 | else | |
3077 | { | |
3078 | i_ehdrp->e_phentsize = 0; | |
3079 | i_phdrp = 0; | |
3080 | i_ehdrp->e_phoff = 0; | |
3081 | } | |
3082 | ||
3083 | elf_tdata (abfd)->symtab_hdr.sh_name = | |
3084 | (unsigned int) _bfd_stringtab_add (shstrtab, ".symtab", true, false); | |
3085 | elf_tdata (abfd)->strtab_hdr.sh_name = | |
3086 | (unsigned int) _bfd_stringtab_add (shstrtab, ".strtab", true, false); | |
3087 | elf_tdata (abfd)->shstrtab_hdr.sh_name = | |
3088 | (unsigned int) _bfd_stringtab_add (shstrtab, ".shstrtab", true, false); | |
3089 | if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
3090 | || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 | |
3091 | || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1) | |
3092 | return false; | |
3093 | ||
3094 | return true; | |
3095 | } | |
3096 | ||
3097 | /* Assign file positions for all the reloc sections which are not part | |
3098 | of the loadable file image. */ | |
3099 | ||
3100 | void | |
3101 | _bfd_elf_assign_file_positions_for_relocs (abfd) | |
3102 | bfd *abfd; | |
3103 | { | |
3104 | file_ptr off; | |
3105 | unsigned int i; | |
3106 | Elf_Internal_Shdr **shdrpp; | |
3107 | ||
3108 | off = elf_tdata (abfd)->next_file_pos; | |
3109 | ||
3110 | for (i = 1, shdrpp = elf_elfsections (abfd) + 1; | |
3111 | i < elf_elfheader (abfd)->e_shnum; | |
3112 | i++, shdrpp++) | |
3113 | { | |
3114 | Elf_Internal_Shdr *shdrp; | |
3115 | ||
3116 | shdrp = *shdrpp; | |
3117 | if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA) | |
3118 | && shdrp->sh_offset == -1) | |
5fe14a9f | 3119 | off = _bfd_elf_assign_file_position_for_section (shdrp, off, true); |
ede4eed4 KR |
3120 | } |
3121 | ||
3122 | elf_tdata (abfd)->next_file_pos = off; | |
3123 | } | |
3124 | ||
3125 | boolean | |
3126 | _bfd_elf_write_object_contents (abfd) | |
3127 | bfd *abfd; | |
3128 | { | |
3129 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3130 | Elf_Internal_Ehdr *i_ehdrp; | |
3131 | Elf_Internal_Shdr **i_shdrp; | |
3132 | boolean failed; | |
3133 | unsigned int count; | |
3134 | ||
3135 | if (! abfd->output_has_begun | |
9e7e5d5e NC |
3136 | && ! _bfd_elf_compute_section_file_positions |
3137 | (abfd, (struct bfd_link_info *) NULL)) | |
ede4eed4 KR |
3138 | return false; |
3139 | ||
3140 | i_shdrp = elf_elfsections (abfd); | |
3141 | i_ehdrp = elf_elfheader (abfd); | |
3142 | ||
3143 | failed = false; | |
3144 | bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); | |
3145 | if (failed) | |
3146 | return false; | |
9e7e5d5e | 3147 | |
ede4eed4 KR |
3148 | _bfd_elf_assign_file_positions_for_relocs (abfd); |
3149 | ||
3150 | /* After writing the headers, we need to write the sections too... */ | |
3151 | for (count = 1; count < i_ehdrp->e_shnum; count++) | |
3152 | { | |
3153 | if (bed->elf_backend_section_processing) | |
3154 | (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]); | |
3155 | if (i_shdrp[count]->contents) | |
3156 | { | |
3157 | if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0 | |
3158 | || (bfd_write (i_shdrp[count]->contents, i_shdrp[count]->sh_size, | |
3159 | 1, abfd) | |
3160 | != i_shdrp[count]->sh_size)) | |
3161 | return false; | |
3162 | } | |
3163 | } | |
3164 | ||
3165 | /* Write out the section header names. */ | |
3166 | if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0 | |
3167 | || ! _bfd_stringtab_emit (abfd, elf_shstrtab (abfd))) | |
3168 | return false; | |
3169 | ||
3170 | if (bed->elf_backend_final_write_processing) | |
3171 | (*bed->elf_backend_final_write_processing) (abfd, | |
3172 | elf_tdata (abfd)->linker); | |
3173 | ||
3174 | return bed->s->write_shdrs_and_ehdr (abfd); | |
3175 | } | |
3176 | ||
3177 | /* given a section, search the header to find them... */ | |
3178 | int | |
3179 | _bfd_elf_section_from_bfd_section (abfd, asect) | |
3180 | bfd *abfd; | |
3181 | struct sec *asect; | |
3182 | { | |
3183 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3184 | Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd); | |
3185 | int index; | |
3186 | Elf_Internal_Shdr *hdr; | |
3187 | int maxindex = elf_elfheader (abfd)->e_shnum; | |
3188 | ||
3189 | for (index = 0; index < maxindex; index++) | |
3190 | { | |
3191 | hdr = i_shdrp[index]; | |
3192 | if (hdr->bfd_section == asect) | |
3193 | return index; | |
3194 | } | |
3195 | ||
3196 | if (bed->elf_backend_section_from_bfd_section) | |
3197 | { | |
3198 | for (index = 0; index < maxindex; index++) | |
3199 | { | |
3200 | int retval; | |
3201 | ||
3202 | hdr = i_shdrp[index]; | |
3203 | retval = index; | |
3204 | if ((*bed->elf_backend_section_from_bfd_section) | |
3205 | (abfd, hdr, asect, &retval)) | |
3206 | return retval; | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | if (bfd_is_abs_section (asect)) | |
3211 | return SHN_ABS; | |
3212 | if (bfd_is_com_section (asect)) | |
3213 | return SHN_COMMON; | |
3214 | if (bfd_is_und_section (asect)) | |
3215 | return SHN_UNDEF; | |
3216 | ||
22b17c74 ILT |
3217 | bfd_set_error (bfd_error_nonrepresentable_section); |
3218 | ||
ede4eed4 KR |
3219 | return -1; |
3220 | } | |
3221 | ||
cb84f028 ILT |
3222 | /* Given a BFD symbol, return the index in the ELF symbol table, or -1 |
3223 | on error. */ | |
3224 | ||
3225 | int | |
ede4eed4 KR |
3226 | _bfd_elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr) |
3227 | bfd *abfd; | |
7fc6a16a | 3228 | asymbol **asym_ptr_ptr; |
ede4eed4 | 3229 | { |
7fc6a16a | 3230 | asymbol *asym_ptr = *asym_ptr_ptr; |
ede4eed4 KR |
3231 | int idx; |
3232 | flagword flags = asym_ptr->flags; | |
3233 | ||
3234 | /* When gas creates relocations against local labels, it creates its | |
3235 | own symbol for the section, but does put the symbol into the | |
3236 | symbol chain, so udata is 0. When the linker is generating | |
3237 | relocatable output, this section symbol may be for one of the | |
3238 | input sections rather than the output section. */ | |
3239 | if (asym_ptr->udata.i == 0 | |
3240 | && (flags & BSF_SECTION_SYM) | |
3241 | && asym_ptr->section) | |
3242 | { | |
3243 | int indx; | |
3244 | ||
3245 | if (asym_ptr->section->output_section != NULL) | |
3246 | indx = asym_ptr->section->output_section->index; | |
3247 | else | |
3248 | indx = asym_ptr->section->index; | |
3249 | if (elf_section_syms (abfd)[indx]) | |
3250 | asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i; | |
3251 | } | |
3252 | ||
3253 | idx = asym_ptr->udata.i; | |
cb84f028 ILT |
3254 | |
3255 | if (idx == 0) | |
3256 | { | |
3257 | /* This case can occur when using --strip-symbol on a symbol | |
3258 | which is used in a relocation entry. */ | |
3259 | (*_bfd_error_handler) | |
53d3ce37 | 3260 | (_("%s: symbol `%s' required but not present"), |
cb84f028 ILT |
3261 | bfd_get_filename (abfd), bfd_asymbol_name (asym_ptr)); |
3262 | bfd_set_error (bfd_error_no_symbols); | |
3263 | return -1; | |
3264 | } | |
ede4eed4 KR |
3265 | |
3266 | #if DEBUG & 4 | |
3267 | { | |
3268 | fprintf (stderr, | |
53d3ce37 | 3269 | _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"), |
cb84f028 ILT |
3270 | (long) asym_ptr, asym_ptr->name, idx, flags, |
3271 | elf_symbol_flags (flags)); | |
ede4eed4 KR |
3272 | fflush (stderr); |
3273 | } | |
3274 | #endif | |
3275 | ||
3276 | return idx; | |
3277 | } | |
3278 | ||
3dbf33ee ILT |
3279 | /* Copy private BFD data. This copies any program header information. */ |
3280 | ||
3281 | static boolean | |
3282 | copy_private_bfd_data (ibfd, obfd) | |
3283 | bfd *ibfd; | |
3284 | bfd *obfd; | |
3285 | { | |
6933148a | 3286 | Elf_Internal_Ehdr *iehdr; |
3dbf33ee ILT |
3287 | struct elf_segment_map *mfirst; |
3288 | struct elf_segment_map **pm; | |
53d3ce37 | 3289 | struct elf_segment_map *m; |
3dbf33ee | 3290 | Elf_Internal_Phdr *p; |
9e7e5d5e NC |
3291 | unsigned int i; |
3292 | unsigned int num_segments; | |
3293 | unsigned int phdr_included = false; | |
3294 | ||
3dbf33ee ILT |
3295 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
3296 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
3297 | return true; | |
3298 | ||
3299 | if (elf_tdata (ibfd)->phdr == NULL) | |
3300 | return true; | |
3301 | ||
6933148a ILT |
3302 | iehdr = elf_elfheader (ibfd); |
3303 | ||
3dbf33ee ILT |
3304 | mfirst = NULL; |
3305 | pm = &mfirst; | |
3306 | ||
9e7e5d5e NC |
3307 | num_segments = elf_elfheader (ibfd)->e_phnum; |
3308 | ||
3309 | #define IS_CONTAINED_BY(addr, len, bottom, phdr) \ | |
3310 | ((addr) >= (bottom) \ | |
3311 | && ( ((addr) + (len)) <= ((bottom) + (phdr)->p_memsz) \ | |
3312 | || ((addr) + (len)) <= ((bottom) + (phdr)->p_filesz))) | |
3313 | ||
3314 | /* The complicated case when p_vaddr is 0 is to handle the Solaris | |
3315 | linker, which generates a PT_INTERP section with p_vaddr and | |
3316 | p_memsz set to 0. */ | |
3317 | ||
3318 | #define IS_SOLARIS_PT_INTERP(p, s) \ | |
3319 | (p->p_vaddr == 0 \ | |
3320 | && p->p_filesz > 0 \ | |
3321 | && (s->flags & SEC_HAS_CONTENTS) != 0 \ | |
3322 | && s->_raw_size > 0 \ | |
3323 | && (bfd_vma) s->filepos >= p->p_offset \ | |
3324 | && ((bfd_vma) s->filepos + s->_raw_size \ | |
3325 | <= p->p_offset + p->p_filesz)) | |
3326 | ||
3327 | ||
3328 | /* Scan through the segments specified in the program header | |
3329 | of the input BFD. */ | |
3330 | for (i = 0, p = elf_tdata (ibfd)->phdr; i < num_segments; i++, p++) | |
3dbf33ee | 3331 | { |
3dbf33ee | 3332 | unsigned int csecs; |
6933148a | 3333 | asection *s; |
9e7e5d5e NC |
3334 | asection **sections; |
3335 | asection *os; | |
6933148a | 3336 | unsigned int isec; |
9e7e5d5e NC |
3337 | bfd_vma matching_lma; |
3338 | bfd_vma suggested_lma; | |
3339 | unsigned int j; | |
3340 | ||
3341 | /* For each section in the input BFD, decide if it should be included | |
3342 | in the current segment. A section will be included if it is within | |
3343 | the address space of the segment, and it is an allocated segment, | |
3344 | and there is an output section associated with it. */ | |
3dbf33ee | 3345 | csecs = 0; |
6933148a | 3346 | for (s = ibfd->sections; s != NULL; s = s->next) |
9e7e5d5e NC |
3347 | if ((IS_CONTAINED_BY (s->vma, s->_raw_size, p->p_vaddr, p) |
3348 | || IS_SOLARIS_PT_INTERP (p, s)) | |
86587dd4 | 3349 | && (s->flags & SEC_ALLOC) != 0 |
6933148a ILT |
3350 | && s->output_section != NULL) |
3351 | ++csecs; | |
3dbf33ee | 3352 | |
9e7e5d5e NC |
3353 | /* Allocate a segment map big enough to contain all of the |
3354 | sections we have selected. */ | |
3dbf33ee ILT |
3355 | m = ((struct elf_segment_map *) |
3356 | bfd_alloc (obfd, | |
3357 | (sizeof (struct elf_segment_map) | |
20db2495 | 3358 | + ((size_t) csecs - 1) * sizeof (asection *)))); |
3dbf33ee | 3359 | if (m == NULL) |
a9713b91 | 3360 | return false; |
3dbf33ee | 3361 | |
9e7e5d5e NC |
3362 | /* Initialise the fields of the segment map. Default to |
3363 | using the physical address of the segment in the input BFD. */ | |
3364 | m->next = NULL; | |
3365 | m->p_type = p->p_type; | |
3366 | m->p_flags = p->p_flags; | |
3dbf33ee | 3367 | m->p_flags_valid = 1; |
9e7e5d5e | 3368 | m->p_paddr = p->p_paddr; |
3dbf33ee ILT |
3369 | m->p_paddr_valid = 1; |
3370 | ||
9e7e5d5e NC |
3371 | /* Determine if this segment contains the ELF file header |
3372 | and if it contains the program headers themselves. */ | |
6933148a ILT |
3373 | m->includes_filehdr = (p->p_offset == 0 |
3374 | && p->p_filesz >= iehdr->e_ehsize); | |
3375 | ||
9e7e5d5e NC |
3376 | if (! phdr_included) |
3377 | { | |
3378 | phdr_included = m->includes_phdrs = | |
3379 | (p->p_offset <= (bfd_vma) iehdr->e_phoff | |
3380 | && (p->p_offset + p->p_filesz | |
3381 | >= ((bfd_vma) iehdr->e_phoff | |
3382 | + iehdr->e_phnum * iehdr->e_phentsize))); | |
3383 | } | |
3dbf33ee | 3384 | |
9e7e5d5e | 3385 | if (csecs == 0) |
6933148a | 3386 | { |
9e7e5d5e NC |
3387 | /* Special segments, such as the PT_PHDR segment, may contain |
3388 | no sections, but ordinary, loadable segments should contain | |
3389 | something. */ | |
e5fc7809 | 3390 | |
9e7e5d5e NC |
3391 | if (p->p_type == PT_LOAD) |
3392 | _bfd_error_handler | |
3393 | (_("%s: warning: Empty loadable segment detected\n"), | |
3394 | bfd_get_filename (ibfd)); | |
3395 | ||
3396 | m->count = 0; | |
3397 | *pm = m; | |
3398 | pm = &m->next; | |
3399 | ||
3400 | continue; | |
3401 | } | |
3402 | ||
3403 | /* Now scan the sections in the input BFD again and attempt | |
3404 | to add their corresponding output sections to the segment map. | |
3405 | The problem here is how to handle an output section which has | |
3406 | been moved (ie had its LMA changed). There are four possibilities: | |
3407 | ||
3408 | 1. None of the sections have been moved. | |
3409 | In this case we can continue to use the segment LMA from the | |
3410 | input BFD. | |
e5fc7809 | 3411 | |
9e7e5d5e NC |
3412 | 2. All of the sections have been moved by the same amount. |
3413 | In this case we can change the segment's LMA to match the LMA | |
3414 | of the first section. | |
3415 | ||
3416 | 3. Some of the sections have been moved, others have not. | |
3417 | In this case those sections which have not been moved can be | |
3418 | placed in the current segment which will have to have its size, | |
3419 | and possibly its LMA changed, and a new segment or segments will | |
3420 | have to be created to contain the other sections. | |
3421 | ||
3422 | 4. The sections have been moved, but not be the same amount. | |
3423 | In this case we can change the segment's LMA to match the LMA | |
3424 | of the first section and we will have to create a new segment | |
3425 | or segments to contain the other sections. | |
3426 | ||
3427 | In order to save time, we allocate an array to hold the section | |
3428 | pointers that we are interested in. As these sections get assigned | |
3429 | to a segment, they are removed from this array. */ | |
3430 | ||
3431 | sections = (asection **) bfd_malloc (sizeof (asection *) * csecs); | |
3432 | if (sections == NULL) | |
3433 | return false; | |
3434 | ||
3435 | /* Step One: Scan for segment vs section LMA conflicts. | |
3436 | Also add the sections to the section array allocated above. | |
3437 | Also add the sections to the current segment. In the common | |
3438 | case, where the sections have not been moved, this means that | |
3439 | we have completely filled the segment, and there is nothing | |
3440 | more to do. */ | |
3441 | ||
3442 | isec = 0; | |
3443 | matching_lma = false; | |
3444 | suggested_lma = 0; | |
3445 | ||
3446 | for (j = 0, s = ibfd->sections; s != NULL; s = s->next) | |
3447 | { | |
e5fc7809 NC |
3448 | os = s->output_section; |
3449 | ||
9e7e5d5e NC |
3450 | if ((IS_CONTAINED_BY (s->vma, s->_raw_size, p->p_vaddr, p) |
3451 | || IS_SOLARIS_PT_INTERP (p, s)) | |
86587dd4 | 3452 | && (s->flags & SEC_ALLOC) != 0 |
e5fc7809 | 3453 | && os != NULL) |
3dbf33ee | 3454 | { |
9e7e5d5e NC |
3455 | sections[j++] = s; |
3456 | ||
22b17c74 ILT |
3457 | /* The Solaris native linker always sets p_paddr to 0. |
3458 | We try to catch that case here, and set it to the | |
3459 | correct value. */ | |
3460 | if (p->p_paddr == 0 | |
3461 | && p->p_vaddr != 0 | |
3462 | && isec == 0 | |
3463 | && os->lma != 0 | |
3464 | && (os->vma == (p->p_vaddr | |
3465 | + (m->includes_filehdr | |
3466 | ? iehdr->e_ehsize | |
3467 | : 0) | |
3468 | + (m->includes_phdrs | |
3469 | ? iehdr->e_phnum * iehdr->e_phentsize | |
3470 | : 0)))) | |
3471 | m->p_paddr = p->p_vaddr; | |
3472 | ||
e5fc7809 | 3473 | /* Match up the physical address of the segment with the |
9e7e5d5e NC |
3474 | LMA address of the output section. */ |
3475 | if (IS_CONTAINED_BY (os->lma, os->_raw_size, m->p_paddr, p)) | |
3476 | { | |
3477 | if (matching_lma == 0) | |
3478 | matching_lma = os->lma; | |
3479 | ||
3480 | /* We assume that if the section fits within the segment | |
3481 | that it does not overlap any other section within that | |
3482 | segment. */ | |
3483 | m->sections[isec++] = os; | |
3484 | } | |
e5fc7809 NC |
3485 | else if (suggested_lma == 0) |
3486 | suggested_lma = os->lma; | |
e5fc7809 | 3487 | } |
9e7e5d5e NC |
3488 | } |
3489 | ||
3490 | BFD_ASSERT (j == csecs); | |
3491 | ||
3492 | /* Step Two: Adjust the physical address of the current segment, | |
3493 | if necessary. */ | |
3494 | if (isec == csecs) | |
3495 | { | |
3496 | /* All of the sections fitted within the segment as currently | |
3497 | specified. This is the default case. Add the segment to | |
3498 | the list of built segments and carry on to process the next | |
3499 | program header in the input BFD. */ | |
3500 | m->count = csecs; | |
3501 | *pm = m; | |
3502 | pm = &m->next; | |
3503 | ||
3504 | free (sections); | |
3505 | continue; | |
3506 | } | |
3507 | else if (matching_lma != 0) | |
3508 | { | |
3509 | /* At least one section fits inside the current segment. | |
3510 | Keep it, but modify its physical address to match the | |
3511 | LMA of the first section that fitted. */ | |
3512 | ||
3513 | m->p_paddr = matching_lma; | |
3514 | } | |
3515 | else | |
3516 | { | |
3517 | /* None of the sections fitted inside the current segment. | |
3518 | Change the current segment's physical address to match | |
3519 | the LMA of the first section. */ | |
3520 | ||
3521 | m->p_paddr = suggested_lma; | |
3522 | } | |
3523 | ||
3524 | /* Step Three: Loop over the sections again, this time assigning | |
3525 | those that fit to the current segment and remvoing them from the | |
3526 | sections array; but making sure not to leave large gaps. Once all | |
3527 | possible sections have been assigned to the current segment it is | |
3528 | added to the list of built segments and if sections still remain | |
3529 | to be assigned, a new segment is constructed before repeating | |
3530 | the loop. */ | |
3531 | isec = 0; | |
3532 | do | |
3533 | { | |
3534 | m->count = 0; | |
3535 | suggested_lma = 0; | |
e5fc7809 | 3536 | |
9e7e5d5e NC |
3537 | /* Fill the current segment with sections that fit. */ |
3538 | for (j = 0; j < csecs; j++) | |
e5fc7809 | 3539 | { |
9e7e5d5e NC |
3540 | s = sections[j]; |
3541 | ||
3542 | if (s == NULL) | |
3543 | continue; | |
3544 | ||
3545 | os = s->output_section; | |
3546 | ||
3547 | if (IS_CONTAINED_BY (os->lma, os->_raw_size, m->p_paddr, p)) | |
3548 | { | |
3549 | if (m->count == 0) | |
3550 | { | |
3551 | /* If the first section in a segment does not start at | |
3552 | the beginning of the segment, then something is wrong. */ | |
3553 | if (os->lma != m->p_paddr) | |
3554 | abort (); | |
3555 | } | |
3556 | else | |
3557 | { | |
3558 | asection * prev_sec; | |
3559 | bfd_vma maxpagesize; | |
3560 | ||
3561 | prev_sec = m->sections[m->count - 1]; | |
3562 | maxpagesize = get_elf_backend_data (obfd)->maxpagesize; | |
3563 | ||
3564 | /* If the gap between the end of the previous section | |
3565 | and the start of this section is more than maxpagesize | |
3566 | then we need to start a new segment. */ | |
3567 | if (BFD_ALIGN (prev_sec->lma + prev_sec->_raw_size, maxpagesize) | |
3568 | < BFD_ALIGN (os->lma, maxpagesize)) | |
3569 | { | |
3570 | if (suggested_lma == 0) | |
3571 | suggested_lma = os->lma; | |
3572 | ||
3573 | continue; | |
3574 | } | |
3575 | } | |
3576 | ||
3577 | m->sections[m->count++] = os; | |
3578 | ++isec; | |
3579 | sections[j] = NULL; | |
3580 | } | |
3581 | else if (suggested_lma == 0) | |
3582 | suggested_lma = os->lma; | |
e5fc7809 | 3583 | } |
9e7e5d5e NC |
3584 | |
3585 | BFD_ASSERT (m->count > 0); | |
3586 | ||
3587 | /* Add the current segment to the list of built segments. */ | |
3588 | *pm = m; | |
3589 | pm = &m->next; | |
3590 | ||
3591 | if (isec < csecs) | |
e5fc7809 | 3592 | { |
9e7e5d5e NC |
3593 | /* We still have not allocated all of the sections to |
3594 | segments. Create a new segment here, initialise it | |
3595 | and carry on looping. */ | |
3596 | ||
3597 | m = ((struct elf_segment_map *) | |
3598 | bfd_alloc (obfd, | |
3599 | (sizeof (struct elf_segment_map) | |
3600 | + ((size_t) csecs - 1) * sizeof (asection *)))); | |
3601 | if (m == NULL) | |
3602 | return false; | |
3603 | ||
3604 | /* Initialise the fields of the segment map. Set the physical | |
3605 | physical address to the LMA of the first section that has | |
3606 | not yet been assigned. */ | |
3607 | ||
3608 | m->next = NULL; | |
3609 | m->p_type = p->p_type; | |
3610 | m->p_flags = p->p_flags; | |
3611 | m->p_flags_valid = 1; | |
3612 | m->p_paddr = suggested_lma; | |
3613 | m->p_paddr_valid = 1; | |
3614 | m->includes_filehdr = 0; | |
3615 | m->includes_phdrs = 0; | |
3dbf33ee | 3616 | } |
3dbf33ee | 3617 | } |
9e7e5d5e | 3618 | while (isec < csecs); |
3dbf33ee | 3619 | |
9e7e5d5e | 3620 | free (sections); |
3dbf33ee ILT |
3621 | } |
3622 | ||
53d3ce37 TT |
3623 | /* The Solaris linker creates program headers in which all the |
3624 | p_paddr fields are zero. When we try to objcopy or strip such a | |
3625 | file, we get confused. Check for this case, and if we find it | |
3626 | reset the p_paddr_valid fields. */ | |
3627 | for (m = mfirst; m != NULL; m = m->next) | |
3628 | if (m->p_paddr != 0) | |
3629 | break; | |
3630 | if (m == NULL) | |
3631 | { | |
3632 | for (m = mfirst; m != NULL; m = m->next) | |
3633 | m->p_paddr_valid = 0; | |
3634 | } | |
3635 | ||
3dbf33ee ILT |
3636 | elf_tdata (obfd)->segment_map = mfirst; |
3637 | ||
9e7e5d5e NC |
3638 | #if 0 |
3639 | /* Final Step: Sort the segments into ascending order of physical address. */ | |
3640 | if (mfirst != NULL) | |
3641 | { | |
3642 | struct elf_segment_map* prev; | |
3643 | ||
3644 | prev = mfirst; | |
3645 | for (m = mfirst->next; m != NULL; prev = m, m = m->next) | |
3646 | { | |
3647 | /* Yes I know - its a bubble sort....*/ | |
3648 | if (m->next != NULL && (m->next->p_paddr < m->p_paddr)) | |
3649 | { | |
3650 | /* swap m and m->next */ | |
3651 | prev->next = m->next; | |
3652 | m->next = m->next->next; | |
3653 | prev->next->next = m; | |
3654 | ||
3655 | /* restart loop. */ | |
3656 | m = mfirst; | |
3657 | } | |
3658 | } | |
3659 | } | |
3660 | #endif | |
3661 | ||
3662 | #undef IS_CONTAINED_BY | |
3663 | #undef IS_SOLARIS_PT_INTERP | |
3664 | ||
3dbf33ee ILT |
3665 | return true; |
3666 | } | |
3667 | ||
fd0198f0 ILT |
3668 | /* Copy private section information. This copies over the entsize |
3669 | field, and sometimes the info field. */ | |
3670 | ||
3671 | boolean | |
3672 | _bfd_elf_copy_private_section_data (ibfd, isec, obfd, osec) | |
3673 | bfd *ibfd; | |
3674 | asection *isec; | |
3675 | bfd *obfd; | |
3676 | asection *osec; | |
3677 | { | |
3678 | Elf_Internal_Shdr *ihdr, *ohdr; | |
3679 | ||
3680 | if (ibfd->xvec->flavour != bfd_target_elf_flavour | |
3681 | || obfd->xvec->flavour != bfd_target_elf_flavour) | |
3682 | return true; | |
3683 | ||
3dbf33ee ILT |
3684 | /* Copy over private BFD data if it has not already been copied. |
3685 | This must be done here, rather than in the copy_private_bfd_data | |
3686 | entry point, because the latter is called after the section | |
3687 | contents have been set, which means that the program headers have | |
3688 | already been worked out. */ | |
3689 | if (elf_tdata (obfd)->segment_map == NULL | |
3690 | && elf_tdata (ibfd)->phdr != NULL) | |
3691 | { | |
3692 | asection *s; | |
3693 | ||
b356d4af RH |
3694 | /* Only set up the segments if there are no more SEC_ALLOC |
3695 | sections. FIXME: This won't do the right thing if objcopy is | |
3696 | used to remove the last SEC_ALLOC section, since objcopy | |
3697 | won't call this routine in that case. */ | |
3698 | for (s = isec->next; s != NULL; s = s->next) | |
3699 | if ((s->flags & SEC_ALLOC) != 0) | |
3dbf33ee ILT |
3700 | break; |
3701 | if (s == NULL) | |
3702 | { | |
3703 | if (! copy_private_bfd_data (ibfd, obfd)) | |
3704 | return false; | |
3705 | } | |
3706 | } | |
3707 | ||
fd0198f0 ILT |
3708 | ihdr = &elf_section_data (isec)->this_hdr; |
3709 | ohdr = &elf_section_data (osec)->this_hdr; | |
3710 | ||
3711 | ohdr->sh_entsize = ihdr->sh_entsize; | |
3712 | ||
3713 | if (ihdr->sh_type == SHT_SYMTAB | |
d6bfcdb5 ILT |
3714 | || ihdr->sh_type == SHT_DYNSYM |
3715 | || ihdr->sh_type == SHT_GNU_verneed | |
3716 | || ihdr->sh_type == SHT_GNU_verdef) | |
fd0198f0 ILT |
3717 | ohdr->sh_info = ihdr->sh_info; |
3718 | ||
3719 | return true; | |
3720 | } | |
3721 | ||
3722 | /* Copy private symbol information. If this symbol is in a section | |
3723 | which we did not map into a BFD section, try to map the section | |
3724 | index correctly. We use special macro definitions for the mapped | |
3725 | section indices; these definitions are interpreted by the | |
3726 | swap_out_syms function. */ | |
3727 | ||
3728 | #define MAP_ONESYMTAB (SHN_LORESERVE - 1) | |
3729 | #define MAP_DYNSYMTAB (SHN_LORESERVE - 2) | |
3730 | #define MAP_STRTAB (SHN_LORESERVE - 3) | |
3731 | #define MAP_SHSTRTAB (SHN_LORESERVE - 4) | |
3732 | ||
3733 | boolean | |
3734 | _bfd_elf_copy_private_symbol_data (ibfd, isymarg, obfd, osymarg) | |
3735 | bfd *ibfd; | |
3736 | asymbol *isymarg; | |
3737 | bfd *obfd; | |
3738 | asymbol *osymarg; | |
3739 | { | |
3740 | elf_symbol_type *isym, *osym; | |
3741 | ||
efc2b064 JL |
3742 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
3743 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
3744 | return true; | |
3745 | ||
fd0198f0 ILT |
3746 | isym = elf_symbol_from (ibfd, isymarg); |
3747 | osym = elf_symbol_from (obfd, osymarg); | |
3748 | ||
3749 | if (isym != NULL | |
3750 | && osym != NULL | |
3751 | && bfd_is_abs_section (isym->symbol.section)) | |
3752 | { | |
3753 | unsigned int shndx; | |
3754 | ||
3755 | shndx = isym->internal_elf_sym.st_shndx; | |
3756 | if (shndx == elf_onesymtab (ibfd)) | |
3757 | shndx = MAP_ONESYMTAB; | |
3758 | else if (shndx == elf_dynsymtab (ibfd)) | |
3759 | shndx = MAP_DYNSYMTAB; | |
3760 | else if (shndx == elf_tdata (ibfd)->strtab_section) | |
3761 | shndx = MAP_STRTAB; | |
3762 | else if (shndx == elf_tdata (ibfd)->shstrtab_section) | |
3763 | shndx = MAP_SHSTRTAB; | |
3764 | osym->internal_elf_sym.st_shndx = shndx; | |
3765 | } | |
3766 | ||
3767 | return true; | |
3768 | } | |
3769 | ||
3770 | /* Swap out the symbols. */ | |
3771 | ||
ede4eed4 | 3772 | static boolean |
37fcafe6 | 3773 | swap_out_syms (abfd, sttp, relocatable_p) |
ede4eed4 KR |
3774 | bfd *abfd; |
3775 | struct bfd_strtab_hash **sttp; | |
37fcafe6 | 3776 | int relocatable_p; |
ede4eed4 KR |
3777 | { |
3778 | struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3779 | ||
3780 | if (!elf_map_symbols (abfd)) | |
3781 | return false; | |
3782 | ||
3783 | /* Dump out the symtabs. */ | |
3784 | { | |
3785 | int symcount = bfd_get_symcount (abfd); | |
3786 | asymbol **syms = bfd_get_outsymbols (abfd); | |
3787 | struct bfd_strtab_hash *stt; | |
3788 | Elf_Internal_Shdr *symtab_hdr; | |
3789 | Elf_Internal_Shdr *symstrtab_hdr; | |
3790 | char *outbound_syms; | |
3791 | int idx; | |
3792 | ||
3793 | stt = _bfd_elf_stringtab_init (); | |
3794 | if (stt == NULL) | |
3795 | return false; | |
3796 | ||
3797 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3798 | symtab_hdr->sh_type = SHT_SYMTAB; | |
3799 | symtab_hdr->sh_entsize = bed->s->sizeof_sym; | |
3800 | symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); | |
3801 | symtab_hdr->sh_info = elf_num_locals (abfd) + 1; | |
3802 | symtab_hdr->sh_addralign = bed->s->file_align; | |
3803 | ||
3804 | symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; | |
3805 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
3806 | ||
3807 | outbound_syms = bfd_alloc (abfd, | |
3808 | (1 + symcount) * bed->s->sizeof_sym); | |
3809 | if (outbound_syms == NULL) | |
a9713b91 | 3810 | return false; |
ede4eed4 KR |
3811 | symtab_hdr->contents = (PTR) outbound_syms; |
3812 | ||
3813 | /* now generate the data (for "contents") */ | |
3814 | { | |
3815 | /* Fill in zeroth symbol and swap it out. */ | |
3816 | Elf_Internal_Sym sym; | |
3817 | sym.st_name = 0; | |
3818 | sym.st_value = 0; | |
3819 | sym.st_size = 0; | |
3820 | sym.st_info = 0; | |
3821 | sym.st_other = 0; | |
3822 | sym.st_shndx = SHN_UNDEF; | |
cf9fb9f2 | 3823 | bed->s->swap_symbol_out (abfd, &sym, (PTR) outbound_syms); |
ede4eed4 KR |
3824 | outbound_syms += bed->s->sizeof_sym; |
3825 | } | |
3826 | for (idx = 0; idx < symcount; idx++) | |
3827 | { | |
3828 | Elf_Internal_Sym sym; | |
3829 | bfd_vma value = syms[idx]->value; | |
3830 | elf_symbol_type *type_ptr; | |
3831 | flagword flags = syms[idx]->flags; | |
052b35d2 | 3832 | int type; |
ede4eed4 KR |
3833 | |
3834 | if (flags & BSF_SECTION_SYM) | |
3835 | /* Section symbols have no names. */ | |
3836 | sym.st_name = 0; | |
3837 | else | |
3838 | { | |
3839 | sym.st_name = (unsigned long) _bfd_stringtab_add (stt, | |
3840 | syms[idx]->name, | |
3841 | true, false); | |
3842 | if (sym.st_name == (unsigned long) -1) | |
3843 | return false; | |
3844 | } | |
3845 | ||
3846 | type_ptr = elf_symbol_from (abfd, syms[idx]); | |
3847 | ||
3848 | if (bfd_is_com_section (syms[idx]->section)) | |
3849 | { | |
3850 | /* ELF common symbols put the alignment into the `value' field, | |
3851 | and the size into the `size' field. This is backwards from | |
3852 | how BFD handles it, so reverse it here. */ | |
3853 | sym.st_size = value; | |
3854 | if (type_ptr == NULL | |
3855 | || type_ptr->internal_elf_sym.st_value == 0) | |
3856 | sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value)); | |
3857 | else | |
3858 | sym.st_value = type_ptr->internal_elf_sym.st_value; | |
9e7e5d5e NC |
3859 | sym.st_shndx = _bfd_elf_section_from_bfd_section |
3860 | (abfd, syms[idx]->section); | |
ede4eed4 KR |
3861 | } |
3862 | else | |
3863 | { | |
3864 | asection *sec = syms[idx]->section; | |
3865 | int shndx; | |
3866 | ||
3867 | if (sec->output_section) | |
3868 | { | |
3869 | value += sec->output_offset; | |
3870 | sec = sec->output_section; | |
3871 | } | |
37fcafe6 DE |
3872 | /* Don't add in the section vma for relocatable output. */ |
3873 | if (! relocatable_p) | |
3874 | value += sec->vma; | |
ede4eed4 KR |
3875 | sym.st_value = value; |
3876 | sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0; | |
fd0198f0 ILT |
3877 | |
3878 | if (bfd_is_abs_section (sec) | |
3879 | && type_ptr != NULL | |
3880 | && type_ptr->internal_elf_sym.st_shndx != 0) | |
ede4eed4 | 3881 | { |
fd0198f0 ILT |
3882 | /* This symbol is in a real ELF section which we did |
3883 | not create as a BFD section. Undo the mapping done | |
3884 | by copy_private_symbol_data. */ | |
3885 | shndx = type_ptr->internal_elf_sym.st_shndx; | |
3886 | switch (shndx) | |
3887 | { | |
3888 | case MAP_ONESYMTAB: | |
3889 | shndx = elf_onesymtab (abfd); | |
3890 | break; | |
3891 | case MAP_DYNSYMTAB: | |
3892 | shndx = elf_dynsymtab (abfd); | |
3893 | break; | |
3894 | case MAP_STRTAB: | |
3895 | shndx = elf_tdata (abfd)->strtab_section; | |
3896 | break; | |
3897 | case MAP_SHSTRTAB: | |
3898 | shndx = elf_tdata (abfd)->shstrtab_section; | |
3899 | break; | |
3900 | default: | |
3901 | break; | |
3902 | } | |
3903 | } | |
3904 | else | |
3905 | { | |
3906 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
3907 | ||
3908 | if (shndx == -1) | |
3909 | { | |
3910 | asection *sec2; | |
3911 | ||
3912 | /* Writing this would be a hell of a lot easier if | |
3913 | we had some decent documentation on bfd, and | |
3914 | knew what to expect of the library, and what to | |
3915 | demand of applications. For example, it | |
3916 | appears that `objcopy' might not set the | |
3917 | section of a symbol to be a section that is | |
3918 | actually in the output file. */ | |
3919 | sec2 = bfd_get_section_by_name (abfd, sec->name); | |
3920 | BFD_ASSERT (sec2 != 0); | |
3921 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec2); | |
3922 | BFD_ASSERT (shndx != -1); | |
3923 | } | |
ede4eed4 | 3924 | } |
fd0198f0 ILT |
3925 | |
3926 | sym.st_shndx = shndx; | |
ede4eed4 KR |
3927 | } |
3928 | ||
052b35d2 ILT |
3929 | if ((flags & BSF_FUNCTION) != 0) |
3930 | type = STT_FUNC; | |
3931 | else if ((flags & BSF_OBJECT) != 0) | |
3932 | type = STT_OBJECT; | |
3933 | else | |
3934 | type = STT_NOTYPE; | |
3935 | ||
ede4eed4 | 3936 | if (bfd_is_com_section (syms[idx]->section)) |
052b35d2 | 3937 | sym.st_info = ELF_ST_INFO (STB_GLOBAL, type); |
ede4eed4 KR |
3938 | else if (bfd_is_und_section (syms[idx]->section)) |
3939 | sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK) | |
3940 | ? STB_WEAK | |
3941 | : STB_GLOBAL), | |
052b35d2 | 3942 | type); |
ede4eed4 KR |
3943 | else if (flags & BSF_SECTION_SYM) |
3944 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); | |
3945 | else if (flags & BSF_FILE) | |
3946 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); | |
3947 | else | |
3948 | { | |
3949 | int bind = STB_LOCAL; | |
ede4eed4 KR |
3950 | |
3951 | if (flags & BSF_LOCAL) | |
3952 | bind = STB_LOCAL; | |
3953 | else if (flags & BSF_WEAK) | |
3954 | bind = STB_WEAK; | |
3955 | else if (flags & BSF_GLOBAL) | |
3956 | bind = STB_GLOBAL; | |
3957 | ||
ede4eed4 KR |
3958 | sym.st_info = ELF_ST_INFO (bind, type); |
3959 | } | |
3960 | ||
80be821d ILT |
3961 | if (type_ptr != NULL) |
3962 | sym.st_other = type_ptr->internal_elf_sym.st_other; | |
3963 | else | |
3964 | sym.st_other = 0; | |
3965 | ||
cf9fb9f2 | 3966 | bed->s->swap_symbol_out (abfd, &sym, (PTR) outbound_syms); |
ede4eed4 KR |
3967 | outbound_syms += bed->s->sizeof_sym; |
3968 | } | |
3969 | ||
3970 | *sttp = stt; | |
3971 | symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); | |
3972 | symstrtab_hdr->sh_type = SHT_STRTAB; | |
3973 | ||
3974 | symstrtab_hdr->sh_flags = 0; | |
3975 | symstrtab_hdr->sh_addr = 0; | |
3976 | symstrtab_hdr->sh_entsize = 0; | |
3977 | symstrtab_hdr->sh_link = 0; | |
3978 | symstrtab_hdr->sh_info = 0; | |
3979 | symstrtab_hdr->sh_addralign = 1; | |
3980 | } | |
3981 | ||
3982 | return true; | |
3983 | } | |
3984 | ||
3985 | /* Return the number of bytes required to hold the symtab vector. | |
3986 | ||
3987 | Note that we base it on the count plus 1, since we will null terminate | |
3988 | the vector allocated based on this size. However, the ELF symbol table | |
3989 | always has a dummy entry as symbol #0, so it ends up even. */ | |
3990 | ||
3991 | long | |
3992 | _bfd_elf_get_symtab_upper_bound (abfd) | |
3993 | bfd *abfd; | |
3994 | { | |
3995 | long symcount; | |
3996 | long symtab_size; | |
3997 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; | |
3998 | ||
3999 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
4000 | symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *)); | |
4001 | ||
4002 | return symtab_size; | |
4003 | } | |
4004 | ||
4005 | long | |
4006 | _bfd_elf_get_dynamic_symtab_upper_bound (abfd) | |
4007 | bfd *abfd; | |
4008 | { | |
4009 | long symcount; | |
4010 | long symtab_size; | |
4011 | Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr; | |
4012 | ||
4013 | if (elf_dynsymtab (abfd) == 0) | |
4014 | { | |
4015 | bfd_set_error (bfd_error_invalid_operation); | |
4016 | return -1; | |
4017 | } | |
4018 | ||
4019 | symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
4020 | symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *)); | |
4021 | ||
4022 | return symtab_size; | |
4023 | } | |
4024 | ||
4025 | long | |
4026 | _bfd_elf_get_reloc_upper_bound (abfd, asect) | |
4027 | bfd *abfd; | |
4028 | sec_ptr asect; | |
4029 | { | |
4030 | return (asect->reloc_count + 1) * sizeof (arelent *); | |
4031 | } | |
4032 | ||
4033 | /* Canonicalize the relocs. */ | |
4034 | ||
4035 | long | |
4036 | _bfd_elf_canonicalize_reloc (abfd, section, relptr, symbols) | |
4037 | bfd *abfd; | |
4038 | sec_ptr section; | |
4039 | arelent **relptr; | |
4040 | asymbol **symbols; | |
4041 | { | |
4042 | arelent *tblptr; | |
4043 | unsigned int i; | |
4044 | ||
e35765a9 ILT |
4045 | if (! get_elf_backend_data (abfd)->s->slurp_reloc_table (abfd, |
4046 | section, | |
4047 | symbols, | |
4048 | false)) | |
ede4eed4 KR |
4049 | return -1; |
4050 | ||
4051 | tblptr = section->relocation; | |
4052 | for (i = 0; i < section->reloc_count; i++) | |
4053 | *relptr++ = tblptr++; | |
4054 | ||
4055 | *relptr = NULL; | |
4056 | ||
4057 | return section->reloc_count; | |
4058 | } | |
4059 | ||
4060 | long | |
4061 | _bfd_elf_get_symtab (abfd, alocation) | |
4062 | bfd *abfd; | |
4063 | asymbol **alocation; | |
4064 | { | |
9e7e5d5e NC |
4065 | long symcount = get_elf_backend_data (abfd)->s->slurp_symbol_table |
4066 | (abfd, alocation, false); | |
ede4eed4 KR |
4067 | |
4068 | if (symcount >= 0) | |
4069 | bfd_get_symcount (abfd) = symcount; | |
4070 | return symcount; | |
4071 | } | |
4072 | ||
4073 | long | |
4074 | _bfd_elf_canonicalize_dynamic_symtab (abfd, alocation) | |
4075 | bfd *abfd; | |
4076 | asymbol **alocation; | |
4077 | { | |
9e7e5d5e NC |
4078 | return get_elf_backend_data (abfd)->s->slurp_symbol_table |
4079 | (abfd, alocation, true); | |
ede4eed4 KR |
4080 | } |
4081 | ||
e35765a9 ILT |
4082 | /* Return the size required for the dynamic reloc entries. Any |
4083 | section that was actually installed in the BFD, and has type | |
4084 | SHT_REL or SHT_RELA, and uses the dynamic symbol table, is | |
4085 | considered to be a dynamic reloc section. */ | |
4086 | ||
4087 | long | |
4088 | _bfd_elf_get_dynamic_reloc_upper_bound (abfd) | |
4089 | bfd *abfd; | |
4090 | { | |
4091 | long ret; | |
4092 | asection *s; | |
4093 | ||
4094 | if (elf_dynsymtab (abfd) == 0) | |
4095 | { | |
4096 | bfd_set_error (bfd_error_invalid_operation); | |
4097 | return -1; | |
4098 | } | |
4099 | ||
4100 | ret = sizeof (arelent *); | |
4101 | for (s = abfd->sections; s != NULL; s = s->next) | |
4102 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
4103 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL | |
4104 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
4105 | ret += ((s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize) | |
4106 | * sizeof (arelent *)); | |
4107 | ||
4108 | return ret; | |
4109 | } | |
4110 | ||
4111 | /* Canonicalize the dynamic relocation entries. Note that we return | |
4112 | the dynamic relocations as a single block, although they are | |
4113 | actually associated with particular sections; the interface, which | |
4114 | was designed for SunOS style shared libraries, expects that there | |
4115 | is only one set of dynamic relocs. Any section that was actually | |
4116 | installed in the BFD, and has type SHT_REL or SHT_RELA, and uses | |
4117 | the dynamic symbol table, is considered to be a dynamic reloc | |
4118 | section. */ | |
4119 | ||
4120 | long | |
4121 | _bfd_elf_canonicalize_dynamic_reloc (abfd, storage, syms) | |
4122 | bfd *abfd; | |
4123 | arelent **storage; | |
4124 | asymbol **syms; | |
4125 | { | |
4126 | boolean (*slurp_relocs) PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
4127 | asection *s; | |
4128 | long ret; | |
4129 | ||
4130 | if (elf_dynsymtab (abfd) == 0) | |
4131 | { | |
4132 | bfd_set_error (bfd_error_invalid_operation); | |
4133 | return -1; | |
4134 | } | |
4135 | ||
4136 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
4137 | ret = 0; | |
4138 | for (s = abfd->sections; s != NULL; s = s->next) | |
4139 | { | |
4140 | if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) | |
4141 | && (elf_section_data (s)->this_hdr.sh_type == SHT_REL | |
4142 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) | |
4143 | { | |
4144 | arelent *p; | |
4145 | long count, i; | |
4146 | ||
4147 | if (! (*slurp_relocs) (abfd, s, syms, true)) | |
4148 | return -1; | |
4149 | count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize; | |
4150 | p = s->relocation; | |
4151 | for (i = 0; i < count; i++) | |
4152 | *storage++ = p++; | |
4153 | ret += count; | |
4154 | } | |
4155 | } | |
4156 | ||
4157 | *storage = NULL; | |
4158 | ||
4159 | return ret; | |
4160 | } | |
a66a61a0 ILT |
4161 | \f |
4162 | /* Read in the version information. */ | |
4163 | ||
4164 | boolean | |
4165 | _bfd_elf_slurp_version_tables (abfd) | |
4166 | bfd *abfd; | |
4167 | { | |
4168 | bfd_byte *contents = NULL; | |
4169 | ||
4170 | if (elf_dynverdef (abfd) != 0) | |
4171 | { | |
4172 | Elf_Internal_Shdr *hdr; | |
4173 | Elf_External_Verdef *everdef; | |
4174 | Elf_Internal_Verdef *iverdef; | |
4175 | unsigned int i; | |
4176 | ||
4177 | hdr = &elf_tdata (abfd)->dynverdef_hdr; | |
4178 | ||
4179 | elf_tdata (abfd)->verdef = | |
4180 | ((Elf_Internal_Verdef *) | |
4181 | bfd_zalloc (abfd, hdr->sh_info * sizeof (Elf_Internal_Verdef))); | |
4182 | if (elf_tdata (abfd)->verdef == NULL) | |
4183 | goto error_return; | |
4184 | ||
4185 | elf_tdata (abfd)->cverdefs = hdr->sh_info; | |
e35765a9 | 4186 | |
a66a61a0 ILT |
4187 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); |
4188 | if (contents == NULL) | |
4189 | goto error_return; | |
4190 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
4191 | || bfd_read ((PTR) contents, 1, hdr->sh_size, abfd) != hdr->sh_size) | |
4192 | goto error_return; | |
4193 | ||
4194 | everdef = (Elf_External_Verdef *) contents; | |
4195 | iverdef = elf_tdata (abfd)->verdef; | |
4196 | for (i = 0; i < hdr->sh_info; i++, iverdef++) | |
4197 | { | |
4198 | Elf_External_Verdaux *everdaux; | |
4199 | Elf_Internal_Verdaux *iverdaux; | |
4200 | unsigned int j; | |
4201 | ||
4202 | _bfd_elf_swap_verdef_in (abfd, everdef, iverdef); | |
4203 | ||
4204 | iverdef->vd_bfd = abfd; | |
4205 | ||
4206 | iverdef->vd_auxptr = ((Elf_Internal_Verdaux *) | |
4207 | bfd_alloc (abfd, | |
4208 | (iverdef->vd_cnt | |
4209 | * sizeof (Elf_Internal_Verdaux)))); | |
4210 | if (iverdef->vd_auxptr == NULL) | |
4211 | goto error_return; | |
4212 | ||
4213 | everdaux = ((Elf_External_Verdaux *) | |
4214 | ((bfd_byte *) everdef + iverdef->vd_aux)); | |
4215 | iverdaux = iverdef->vd_auxptr; | |
4216 | for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++) | |
4217 | { | |
4218 | _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux); | |
4219 | ||
4220 | iverdaux->vda_nodename = | |
4221 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
4222 | iverdaux->vda_name); | |
4223 | if (iverdaux->vda_nodename == NULL) | |
4224 | goto error_return; | |
4225 | ||
4226 | if (j + 1 < iverdef->vd_cnt) | |
4227 | iverdaux->vda_nextptr = iverdaux + 1; | |
4228 | else | |
4229 | iverdaux->vda_nextptr = NULL; | |
4230 | ||
4231 | everdaux = ((Elf_External_Verdaux *) | |
4232 | ((bfd_byte *) everdaux + iverdaux->vda_next)); | |
4233 | } | |
4234 | ||
4235 | iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename; | |
4236 | ||
4237 | if (i + 1 < hdr->sh_info) | |
4238 | iverdef->vd_nextdef = iverdef + 1; | |
4239 | else | |
4240 | iverdef->vd_nextdef = NULL; | |
4241 | ||
4242 | everdef = ((Elf_External_Verdef *) | |
4243 | ((bfd_byte *) everdef + iverdef->vd_next)); | |
4244 | } | |
4245 | ||
4246 | free (contents); | |
4247 | contents = NULL; | |
4248 | } | |
4249 | ||
4250 | if (elf_dynverref (abfd) != 0) | |
4251 | { | |
4252 | Elf_Internal_Shdr *hdr; | |
4253 | Elf_External_Verneed *everneed; | |
4254 | Elf_Internal_Verneed *iverneed; | |
4255 | unsigned int i; | |
4256 | ||
4257 | hdr = &elf_tdata (abfd)->dynverref_hdr; | |
4258 | ||
4259 | elf_tdata (abfd)->verref = | |
4260 | ((Elf_Internal_Verneed *) | |
4261 | bfd_zalloc (abfd, hdr->sh_info * sizeof (Elf_Internal_Verneed))); | |
4262 | if (elf_tdata (abfd)->verref == NULL) | |
4263 | goto error_return; | |
4264 | ||
4265 | elf_tdata (abfd)->cverrefs = hdr->sh_info; | |
4266 | ||
4267 | contents = (bfd_byte *) bfd_malloc (hdr->sh_size); | |
4268 | if (contents == NULL) | |
4269 | goto error_return; | |
4270 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0 | |
4271 | || bfd_read ((PTR) contents, 1, hdr->sh_size, abfd) != hdr->sh_size) | |
4272 | goto error_return; | |
4273 | ||
4274 | everneed = (Elf_External_Verneed *) contents; | |
4275 | iverneed = elf_tdata (abfd)->verref; | |
4276 | for (i = 0; i < hdr->sh_info; i++, iverneed++) | |
4277 | { | |
4278 | Elf_External_Vernaux *evernaux; | |
4279 | Elf_Internal_Vernaux *ivernaux; | |
4280 | unsigned int j; | |
4281 | ||
4282 | _bfd_elf_swap_verneed_in (abfd, everneed, iverneed); | |
4283 | ||
4284 | iverneed->vn_bfd = abfd; | |
4285 | ||
4286 | iverneed->vn_filename = | |
4287 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
4288 | iverneed->vn_file); | |
4289 | if (iverneed->vn_filename == NULL) | |
4290 | goto error_return; | |
4291 | ||
4292 | iverneed->vn_auxptr = | |
4293 | ((Elf_Internal_Vernaux *) | |
4294 | bfd_alloc (abfd, | |
4295 | iverneed->vn_cnt * sizeof (Elf_Internal_Vernaux))); | |
4296 | ||
4297 | evernaux = ((Elf_External_Vernaux *) | |
4298 | ((bfd_byte *) everneed + iverneed->vn_aux)); | |
4299 | ivernaux = iverneed->vn_auxptr; | |
4300 | for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++) | |
4301 | { | |
4302 | _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux); | |
4303 | ||
4304 | ivernaux->vna_nodename = | |
4305 | bfd_elf_string_from_elf_section (abfd, hdr->sh_link, | |
4306 | ivernaux->vna_name); | |
4307 | if (ivernaux->vna_nodename == NULL) | |
4308 | goto error_return; | |
4309 | ||
4310 | if (j + 1 < iverneed->vn_cnt) | |
4311 | ivernaux->vna_nextptr = ivernaux + 1; | |
4312 | else | |
4313 | ivernaux->vna_nextptr = NULL; | |
4314 | ||
4315 | evernaux = ((Elf_External_Vernaux *) | |
4316 | ((bfd_byte *) evernaux + ivernaux->vna_next)); | |
4317 | } | |
4318 | ||
4319 | if (i + 1 < hdr->sh_info) | |
4320 | iverneed->vn_nextref = iverneed + 1; | |
4321 | else | |
4322 | iverneed->vn_nextref = NULL; | |
4323 | ||
4324 | everneed = ((Elf_External_Verneed *) | |
4325 | ((bfd_byte *) everneed + iverneed->vn_next)); | |
4326 | } | |
4327 | ||
4328 | free (contents); | |
4329 | contents = NULL; | |
4330 | } | |
4331 | ||
4332 | return true; | |
4333 | ||
4334 | error_return: | |
4335 | if (contents == NULL) | |
4336 | free (contents); | |
4337 | return false; | |
4338 | } | |
4339 | \f | |
ede4eed4 KR |
4340 | asymbol * |
4341 | _bfd_elf_make_empty_symbol (abfd) | |
4342 | bfd *abfd; | |
4343 | { | |
4344 | elf_symbol_type *newsym; | |
4345 | ||
4346 | newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (elf_symbol_type)); | |
4347 | if (!newsym) | |
a9713b91 | 4348 | return NULL; |
ede4eed4 KR |
4349 | else |
4350 | { | |
4351 | newsym->symbol.the_bfd = abfd; | |
4352 | return &newsym->symbol; | |
4353 | } | |
4354 | } | |
4355 | ||
4356 | void | |
4357 | _bfd_elf_get_symbol_info (ignore_abfd, symbol, ret) | |
4358 | bfd *ignore_abfd; | |
4359 | asymbol *symbol; | |
4360 | symbol_info *ret; | |
4361 | { | |
4362 | bfd_symbol_info (symbol, ret); | |
4363 | } | |
4364 | ||
d6bfcdb5 ILT |
4365 | /* Return whether a symbol name implies a local symbol. Most targets |
4366 | use this function for the is_local_label_name entry point, but some | |
4367 | override it. */ | |
a66a61a0 ILT |
4368 | |
4369 | boolean | |
4370 | _bfd_elf_is_local_label_name (abfd, name) | |
4371 | bfd *abfd; | |
4372 | const char *name; | |
4373 | { | |
d6bfcdb5 ILT |
4374 | /* Normal local symbols start with ``.L''. */ |
4375 | if (name[0] == '.' && name[1] == 'L') | |
4376 | return true; | |
4377 | ||
4378 | /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
4379 | DWARF debugging symbols starting with ``..''. */ | |
4380 | if (name[0] == '.' && name[1] == '.') | |
4381 | return true; | |
4382 | ||
4383 | /* gcc will sometimes generate symbols beginning with ``_.L_'' when | |
4384 | emitting DWARF debugging output. I suspect this is actually a | |
4385 | small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
4386 | ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
4387 | underscore to be emitted on some ELF targets). For ease of use, | |
4388 | we treat such symbols as local. */ | |
4389 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
4390 | return true; | |
4391 | ||
4392 | return false; | |
a66a61a0 ILT |
4393 | } |
4394 | ||
ede4eed4 KR |
4395 | alent * |
4396 | _bfd_elf_get_lineno (ignore_abfd, symbol) | |
4397 | bfd *ignore_abfd; | |
4398 | asymbol *symbol; | |
4399 | { | |
8cd2f4fe | 4400 | abort (); |
ede4eed4 KR |
4401 | return NULL; |
4402 | } | |
4403 | ||
4404 | boolean | |
4405 | _bfd_elf_set_arch_mach (abfd, arch, machine) | |
4406 | bfd *abfd; | |
4407 | enum bfd_architecture arch; | |
4408 | unsigned long machine; | |
4409 | { | |
4410 | /* If this isn't the right architecture for this backend, and this | |
4411 | isn't the generic backend, fail. */ | |
4412 | if (arch != get_elf_backend_data (abfd)->arch | |
4413 | && arch != bfd_arch_unknown | |
4414 | && get_elf_backend_data (abfd)->arch != bfd_arch_unknown) | |
4415 | return false; | |
4416 | ||
4417 | return bfd_default_set_arch_mach (abfd, arch, machine); | |
4418 | } | |
4419 | ||
6f904fce ILT |
4420 | /* Find the nearest line to a particular section and offset, for error |
4421 | reporting. */ | |
4422 | ||
ede4eed4 KR |
4423 | boolean |
4424 | _bfd_elf_find_nearest_line (abfd, | |
6f904fce ILT |
4425 | section, |
4426 | symbols, | |
4427 | offset, | |
4428 | filename_ptr, | |
4429 | functionname_ptr, | |
4430 | line_ptr) | |
ede4eed4 KR |
4431 | bfd *abfd; |
4432 | asection *section; | |
4433 | asymbol **symbols; | |
4434 | bfd_vma offset; | |
4435 | CONST char **filename_ptr; | |
4436 | CONST char **functionname_ptr; | |
4437 | unsigned int *line_ptr; | |
4438 | { | |
86aac8ea | 4439 | boolean found; |
6f904fce ILT |
4440 | const char *filename; |
4441 | asymbol *func; | |
86aac8ea | 4442 | bfd_vma low_func; |
6f904fce ILT |
4443 | asymbol **p; |
4444 | ||
eae43516 GRK |
4445 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
4446 | filename_ptr, functionname_ptr, | |
4447 | line_ptr)) | |
4448 | return true; | |
4449 | ||
86aac8ea ILT |
4450 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
4451 | &found, filename_ptr, | |
4452 | functionname_ptr, line_ptr, | |
4453 | &elf_tdata (abfd)->line_info)) | |
4454 | return false; | |
4455 | if (found) | |
4456 | return true; | |
4457 | ||
6f904fce ILT |
4458 | if (symbols == NULL) |
4459 | return false; | |
4460 | ||
4461 | filename = NULL; | |
4462 | func = NULL; | |
86aac8ea | 4463 | low_func = 0; |
6f904fce ILT |
4464 | |
4465 | for (p = symbols; *p != NULL; p++) | |
4466 | { | |
4467 | elf_symbol_type *q; | |
4468 | ||
4469 | q = (elf_symbol_type *) *p; | |
4470 | ||
4471 | if (bfd_get_section (&q->symbol) != section) | |
4472 | continue; | |
4473 | ||
4474 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) | |
4475 | { | |
4476 | default: | |
4477 | break; | |
4478 | case STT_FILE: | |
4479 | filename = bfd_asymbol_name (&q->symbol); | |
4480 | break; | |
4481 | case STT_FUNC: | |
86aac8ea ILT |
4482 | if (q->symbol.section == section |
4483 | && q->symbol.value >= low_func | |
4484 | && q->symbol.value <= offset) | |
4485 | { | |
4486 | func = (asymbol *) q; | |
4487 | low_func = q->symbol.value; | |
4488 | } | |
6f904fce ILT |
4489 | break; |
4490 | } | |
4491 | } | |
4492 | ||
4493 | if (func == NULL) | |
4494 | return false; | |
4495 | ||
4496 | *filename_ptr = filename; | |
4497 | *functionname_ptr = bfd_asymbol_name (func); | |
4498 | *line_ptr = 0; | |
4499 | return true; | |
ede4eed4 KR |
4500 | } |
4501 | ||
4502 | int | |
4503 | _bfd_elf_sizeof_headers (abfd, reloc) | |
4504 | bfd *abfd; | |
4505 | boolean reloc; | |
4506 | { | |
4507 | int ret; | |
4508 | ||
4509 | ret = get_elf_backend_data (abfd)->s->sizeof_ehdr; | |
4510 | if (! reloc) | |
fd0198f0 | 4511 | ret += get_program_header_size (abfd); |
ede4eed4 KR |
4512 | return ret; |
4513 | } | |
4514 | ||
4515 | boolean | |
4516 | _bfd_elf_set_section_contents (abfd, section, location, offset, count) | |
4517 | bfd *abfd; | |
4518 | sec_ptr section; | |
4519 | PTR location; | |
4520 | file_ptr offset; | |
4521 | bfd_size_type count; | |
4522 | { | |
4523 | Elf_Internal_Shdr *hdr; | |
4524 | ||
4525 | if (! abfd->output_has_begun | |
9e7e5d5e NC |
4526 | && ! _bfd_elf_compute_section_file_positions |
4527 | (abfd, (struct bfd_link_info *) NULL)) | |
ede4eed4 KR |
4528 | return false; |
4529 | ||
4530 | hdr = &elf_section_data (section)->this_hdr; | |
4531 | ||
4532 | if (bfd_seek (abfd, hdr->sh_offset + offset, SEEK_SET) == -1) | |
4533 | return false; | |
4534 | if (bfd_write (location, 1, count, abfd) != count) | |
4535 | return false; | |
4536 | ||
4537 | return true; | |
4538 | } | |
4539 | ||
4540 | void | |
4541 | _bfd_elf_no_info_to_howto (abfd, cache_ptr, dst) | |
4542 | bfd *abfd; | |
4543 | arelent *cache_ptr; | |
4544 | Elf_Internal_Rela *dst; | |
4545 | { | |
8cd2f4fe | 4546 | abort (); |
ede4eed4 KR |
4547 | } |
4548 | ||
4549 | #if 0 | |
4550 | void | |
4551 | _bfd_elf_no_info_to_howto_rel (abfd, cache_ptr, dst) | |
4552 | bfd *abfd; | |
4553 | arelent *cache_ptr; | |
4554 | Elf_Internal_Rel *dst; | |
4555 | { | |
8cd2f4fe | 4556 | abort (); |
ede4eed4 KR |
4557 | } |
4558 | #endif | |
7fc6a16a ILT |
4559 | |
4560 | /* Try to convert a non-ELF reloc into an ELF one. */ | |
4561 | ||
4562 | boolean | |
4563 | _bfd_elf_validate_reloc (abfd, areloc) | |
4564 | bfd *abfd; | |
4565 | arelent *areloc; | |
4566 | { | |
4567 | /* Check whether we really have an ELF howto. */ | |
4568 | ||
4569 | if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec) | |
4570 | { | |
4571 | bfd_reloc_code_real_type code; | |
4572 | reloc_howto_type *howto; | |
4573 | ||
4574 | /* Alien reloc: Try to determine its type to replace it with an | |
4575 | equivalent ELF reloc. */ | |
4576 | ||
4577 | if (areloc->howto->pc_relative) | |
4578 | { | |
4579 | switch (areloc->howto->bitsize) | |
4580 | { | |
4581 | case 8: | |
4582 | code = BFD_RELOC_8_PCREL; | |
4583 | break; | |
4584 | case 12: | |
4585 | code = BFD_RELOC_12_PCREL; | |
4586 | break; | |
4587 | case 16: | |
4588 | code = BFD_RELOC_16_PCREL; | |
4589 | break; | |
4590 | case 24: | |
4591 | code = BFD_RELOC_24_PCREL; | |
4592 | break; | |
4593 | case 32: | |
4594 | code = BFD_RELOC_32_PCREL; | |
4595 | break; | |
4596 | case 64: | |
4597 | code = BFD_RELOC_64_PCREL; | |
4598 | break; | |
4599 | default: | |
4600 | goto fail; | |
4601 | } | |
4602 | ||
4603 | howto = bfd_reloc_type_lookup (abfd, code); | |
4604 | ||
4605 | if (areloc->howto->pcrel_offset != howto->pcrel_offset) | |
4606 | { | |
4607 | if (howto->pcrel_offset) | |
4608 | areloc->addend += areloc->address; | |
4609 | else | |
4610 | areloc->addend -= areloc->address; /* addend is unsigned!! */ | |
4611 | } | |
4612 | } | |
4613 | else | |
4614 | { | |
4615 | switch (areloc->howto->bitsize) | |
4616 | { | |
4617 | case 8: | |
4618 | code = BFD_RELOC_8; | |
4619 | break; | |
4620 | case 14: | |
4621 | code = BFD_RELOC_14; | |
4622 | break; | |
4623 | case 16: | |
4624 | code = BFD_RELOC_16; | |
4625 | break; | |
4626 | case 26: | |
4627 | code = BFD_RELOC_26; | |
4628 | break; | |
4629 | case 32: | |
4630 | code = BFD_RELOC_32; | |
4631 | break; | |
4632 | case 64: | |
4633 | code = BFD_RELOC_64; | |
4634 | break; | |
4635 | default: | |
4636 | goto fail; | |
4637 | } | |
4638 | ||
4639 | howto = bfd_reloc_type_lookup (abfd, code); | |
4640 | } | |
4641 | ||
4642 | if (howto) | |
4643 | areloc->howto = howto; | |
4644 | else | |
4645 | goto fail; | |
4646 | } | |
4647 | ||
4648 | return true; | |
4649 | ||
4650 | fail: | |
4651 | (*_bfd_error_handler) | |
53d3ce37 | 4652 | (_("%s: unsupported relocation type %s"), |
7fc6a16a ILT |
4653 | bfd_get_filename (abfd), areloc->howto->name); |
4654 | bfd_set_error (bfd_error_bad_value); | |
4655 | return false; | |
4656 | } | |
16ce6205 RH |
4657 | |
4658 | boolean | |
4659 | _bfd_elf_close_and_cleanup (abfd) | |
4660 | bfd *abfd; | |
4661 | { | |
e6e3d4bd ILT |
4662 | if (bfd_get_format (abfd) == bfd_object) |
4663 | { | |
4664 | if (elf_shstrtab (abfd) != NULL) | |
4665 | _bfd_stringtab_free (elf_shstrtab (abfd)); | |
4666 | } | |
4667 | ||
16ce6205 RH |
4668 | return _bfd_generic_close_and_cleanup (abfd); |
4669 | } |