Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
571fe01f | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Henderson <rth@tamu.edu>. |
5 | ||
571fe01f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
571fe01f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
571fe01f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
571fe01f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
21 | |
22 | /* We need a published ABI spec for this. Until one comes out, don't | |
23 | assume this'll remain unchanged forever. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | ||
30 | #include "elf/alpha.h" | |
31 | ||
32 | #define ALPHAECOFF | |
33 | ||
34 | #define NO_COFF_RELOCS | |
35 | #define NO_COFF_SYMBOLS | |
36 | #define NO_COFF_LINENOS | |
37 | ||
fe8bc63d | 38 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
39 | #include "coff/internal.h" |
40 | #include "coff/sym.h" | |
41 | #include "coff/symconst.h" | |
42 | #include "coff/ecoff.h" | |
43 | #include "coff/alpha.h" | |
44 | #include "aout/ar.h" | |
45 | #include "libcoff.h" | |
46 | #include "libecoff.h" | |
47 | #define ECOFF_64 | |
48 | #include "ecoffswap.h" | |
49 | ||
986a241f | 50 | static bfd_boolean alpha_elf_dynamic_symbol_p |
571fe01f | 51 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); |
252b5132 | 52 | static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc |
571fe01f | 53 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
252b5132 | 54 | static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create |
571fe01f | 55 | PARAMS ((bfd *)); |
252b5132 RH |
56 | |
57 | static bfd_reloc_status_type elf64_alpha_reloc_nil | |
571fe01f | 58 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
252b5132 | 59 | static bfd_reloc_status_type elf64_alpha_reloc_bad |
571fe01f | 60 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
252b5132 | 61 | static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp |
571fe01f | 62 | PARAMS ((bfd *, bfd_vma, bfd_byte *, bfd_byte *)); |
252b5132 | 63 | static bfd_reloc_status_type elf64_alpha_reloc_gpdisp |
571fe01f | 64 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
252b5132 RH |
65 | |
66 | static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup | |
571fe01f | 67 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
252b5132 | 68 | static void elf64_alpha_info_to_howto |
571fe01f | 69 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
252b5132 | 70 | |
b34976b6 | 71 | static bfd_boolean elf64_alpha_mkobject |
571fe01f | 72 | PARAMS ((bfd *)); |
b34976b6 | 73 | static bfd_boolean elf64_alpha_object_p |
571fe01f | 74 | PARAMS ((bfd *)); |
b34976b6 | 75 | static bfd_boolean elf64_alpha_section_from_shdr |
571fe01f | 76 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
b34976b6 | 77 | static bfd_boolean elf64_alpha_section_flags |
571fe01f | 78 | PARAMS ((flagword *, Elf_Internal_Shdr *)); |
b34976b6 | 79 | static bfd_boolean elf64_alpha_fake_sections |
571fe01f | 80 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
b34976b6 | 81 | static bfd_boolean elf64_alpha_create_got_section |
571fe01f | 82 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 83 | static bfd_boolean elf64_alpha_create_dynamic_sections |
571fe01f | 84 | PARAMS ((bfd *, struct bfd_link_info *)); |
252b5132 | 85 | |
b34976b6 | 86 | static bfd_boolean elf64_alpha_read_ecoff_info |
571fe01f | 87 | PARAMS ((bfd *, asection *, struct ecoff_debug_info *)); |
b34976b6 | 88 | static bfd_boolean elf64_alpha_is_local_label_name |
571fe01f | 89 | PARAMS ((bfd *, const char *)); |
b34976b6 | 90 | static bfd_boolean elf64_alpha_find_nearest_line |
571fe01f NC |
91 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, |
92 | const char **, unsigned int *)); | |
252b5132 RH |
93 | |
94 | #if defined(__STDC__) || defined(ALMOST_STDC) | |
95 | struct alpha_elf_link_hash_entry; | |
96 | #endif | |
97 | ||
b34976b6 | 98 | static bfd_boolean elf64_alpha_output_extsym |
571fe01f | 99 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
252b5132 | 100 | |
b34976b6 | 101 | static bfd_boolean elf64_alpha_can_merge_gots |
571fe01f | 102 | PARAMS ((bfd *, bfd *)); |
252b5132 | 103 | static void elf64_alpha_merge_gots |
571fe01f | 104 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 105 | static bfd_boolean elf64_alpha_calc_got_offsets_for_symbol |
252b5132 | 106 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
b34976b6 | 107 | static void elf64_alpha_calc_got_offsets |
f44f99a5 | 108 | PARAMS ((struct bfd_link_info *)); |
b34976b6 | 109 | static bfd_boolean elf64_alpha_size_got_sections |
f44f99a5 | 110 | PARAMS ((struct bfd_link_info *)); |
b34976b6 AM |
111 | static bfd_boolean elf64_alpha_size_plt_section |
112 | PARAMS ((struct bfd_link_info *)); | |
113 | static bfd_boolean elf64_alpha_size_plt_section_1 | |
f44f99a5 | 114 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
b34976b6 | 115 | static bfd_boolean elf64_alpha_always_size_sections |
252b5132 | 116 | PARAMS ((bfd *, struct bfd_link_info *)); |
3765b1be RH |
117 | static int alpha_dynamic_entries_for_reloc |
118 | PARAMS ((int, int, int)); | |
b34976b6 | 119 | static bfd_boolean elf64_alpha_calc_dynrel_sizes |
252b5132 | 120 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); |
b34976b6 | 121 | static bfd_boolean elf64_alpha_size_rela_got_section |
f44f99a5 | 122 | PARAMS ((struct bfd_link_info *)); |
b34976b6 | 123 | static bfd_boolean elf64_alpha_size_rela_got_1 |
f44f99a5 | 124 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); |
b34976b6 | 125 | static bfd_boolean elf64_alpha_add_symbol_hook |
252b5132 RH |
126 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
127 | const char **, flagword *, asection **, bfd_vma *)); | |
3765b1be RH |
128 | static struct alpha_elf_got_entry *get_got_entry |
129 | PARAMS ((bfd *, struct alpha_elf_link_hash_entry *, unsigned long, | |
130 | unsigned long, bfd_vma)); | |
b34976b6 | 131 | static bfd_boolean elf64_alpha_check_relocs |
571fe01f | 132 | PARAMS ((bfd *, struct bfd_link_info *, asection *sec, |
252b5132 | 133 | const Elf_Internal_Rela *)); |
b34976b6 | 134 | static bfd_boolean elf64_alpha_adjust_dynamic_symbol |
571fe01f | 135 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 136 | static bfd_boolean elf64_alpha_size_dynamic_sections |
571fe01f | 137 | PARAMS ((bfd *, struct bfd_link_info *)); |
1bbc9cec RH |
138 | static void elf64_alpha_emit_dynrel |
139 | PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, | |
140 | bfd_vma, long, long, bfd_vma)); | |
b34976b6 | 141 | static bfd_boolean elf64_alpha_relocate_section_r |
571fe01f NC |
142 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
143 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 144 | static bfd_boolean elf64_alpha_relocate_section |
571fe01f | 145 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
252b5132 | 146 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
b34976b6 | 147 | static bfd_boolean elf64_alpha_finish_dynamic_symbol |
571fe01f NC |
148 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
149 | Elf_Internal_Sym *)); | |
b34976b6 | 150 | static bfd_boolean elf64_alpha_finish_dynamic_sections |
571fe01f | 151 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 152 | static bfd_boolean elf64_alpha_final_link |
571fe01f | 153 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 154 | static bfd_boolean elf64_alpha_merge_ind_symbols |
571fe01f | 155 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
cd6f9321 L |
156 | static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs |
157 | PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int)); | |
fcfbdf31 | 158 | static enum elf_reloc_type_class elf64_alpha_reloc_type_class |
f51e552e | 159 | PARAMS ((const Elf_Internal_Rela *)); |
252b5132 RH |
160 | \f |
161 | struct alpha_elf_link_hash_entry | |
162 | { | |
163 | struct elf_link_hash_entry root; | |
164 | ||
165 | /* External symbol information. */ | |
166 | EXTR esym; | |
167 | ||
168 | /* Cumulative flags for all the .got entries. */ | |
169 | int flags; | |
170 | ||
9e756d64 | 171 | /* Contexts in which a literal was referenced. */ |
3765b1be RH |
172 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
173 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
174 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
175 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
176 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
177 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
178 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38 | |
9e756d64 | 179 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x40 |
cc03ec80 RH |
180 | #define ALPHA_ELF_LINK_HASH_PLT_LOC 0x80 |
181 | ||
182 | /* Used to undo the localization of a plt symbol. */ | |
183 | asection *plt_old_section; | |
184 | bfd_vma plt_old_value; | |
252b5132 RH |
185 | |
186 | /* Used to implement multiple .got subsections. */ | |
187 | struct alpha_elf_got_entry | |
188 | { | |
189 | struct alpha_elf_got_entry *next; | |
190 | ||
571fe01f | 191 | /* Which .got subsection? */ |
252b5132 RH |
192 | bfd *gotobj; |
193 | ||
571fe01f | 194 | /* The addend in effect for this entry. */ |
dc810e39 | 195 | bfd_vma addend; |
252b5132 | 196 | |
571fe01f | 197 | /* The .got offset for this entry. */ |
252b5132 RH |
198 | int got_offset; |
199 | ||
3765b1be RH |
200 | /* How many references to this entry? */ |
201 | int use_count; | |
252b5132 | 202 | |
3765b1be RH |
203 | /* The relocation type of this entry. */ |
204 | unsigned char reloc_type; | |
252b5132 | 205 | |
3765b1be RH |
206 | /* How a LITERAL is used. */ |
207 | unsigned char flags; | |
208 | ||
209 | /* Have we initialized the dynamic relocation for this entry? */ | |
210 | unsigned char reloc_done; | |
211 | ||
212 | /* Have we adjusted this entry for SEC_MERGE? */ | |
213 | unsigned char reloc_xlated; | |
252b5132 RH |
214 | } *got_entries; |
215 | ||
571fe01f | 216 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
217 | of relocation sections. */ |
218 | struct alpha_elf_reloc_entry | |
219 | { | |
220 | struct alpha_elf_reloc_entry *next; | |
221 | ||
571fe01f | 222 | /* Which .reloc section? */ |
252b5132 RH |
223 | asection *srel; |
224 | ||
571fe01f | 225 | /* What kind of relocation? */ |
fcfbdf31 JJ |
226 | unsigned int rtype; |
227 | ||
571fe01f | 228 | /* Is this against read-only section? */ |
fcfbdf31 | 229 | unsigned int reltext : 1; |
252b5132 | 230 | |
571fe01f | 231 | /* How many did we find? */ |
252b5132 RH |
232 | unsigned long count; |
233 | } *reloc_entries; | |
234 | }; | |
235 | ||
236 | /* Alpha ELF linker hash table. */ | |
237 | ||
238 | struct alpha_elf_link_hash_table | |
239 | { | |
240 | struct elf_link_hash_table root; | |
241 | ||
242 | /* The head of a list of .got subsections linked through | |
243 | alpha_elf_tdata(abfd)->got_link_next. */ | |
244 | bfd *got_list; | |
245 | }; | |
246 | ||
247 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
248 | ||
249 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
250 | ((struct alpha_elf_link_hash_entry *) \ | |
251 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
252 | (copy), (follow))) | |
253 | ||
254 | /* Traverse a Alpha ELF linker hash table. */ | |
255 | ||
256 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
257 | (elf_link_hash_traverse \ | |
258 | (&(table)->root, \ | |
b34976b6 | 259 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
252b5132 RH |
260 | (info))) |
261 | ||
262 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
263 | ||
264 | #define alpha_elf_hash_table(p) \ | |
265 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
266 | ||
267 | /* Get the object's symbols as our own entry type. */ | |
268 | ||
269 | #define alpha_elf_sym_hashes(abfd) \ | |
270 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
271 | ||
986a241f RH |
272 | /* Should we do dynamic things to this symbol? This differs from the |
273 | generic version in that we never need to consider function pointer | |
274 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
275 | address is ever taken. */ | |
252b5132 | 276 | |
986a241f | 277 | static inline bfd_boolean |
8fb35fed RH |
278 | alpha_elf_dynamic_symbol_p (h, info) |
279 | struct elf_link_hash_entry *h; | |
280 | struct bfd_link_info *info; | |
281 | { | |
986a241f | 282 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 283 | } |
252b5132 RH |
284 | |
285 | /* Create an entry in a Alpha ELF linker hash table. */ | |
286 | ||
287 | static struct bfd_hash_entry * | |
288 | elf64_alpha_link_hash_newfunc (entry, table, string) | |
289 | struct bfd_hash_entry *entry; | |
290 | struct bfd_hash_table *table; | |
291 | const char *string; | |
292 | { | |
293 | struct alpha_elf_link_hash_entry *ret = | |
294 | (struct alpha_elf_link_hash_entry *) entry; | |
295 | ||
296 | /* Allocate the structure if it has not already been allocated by a | |
297 | subclass. */ | |
298 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
299 | ret = ((struct alpha_elf_link_hash_entry *) | |
300 | bfd_hash_allocate (table, | |
301 | sizeof (struct alpha_elf_link_hash_entry))); | |
302 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
303 | return (struct bfd_hash_entry *) ret; | |
304 | ||
305 | /* Call the allocation method of the superclass. */ | |
306 | ret = ((struct alpha_elf_link_hash_entry *) | |
307 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
308 | table, string)); | |
309 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
310 | { | |
311 | /* Set local fields. */ | |
312 | memset (&ret->esym, 0, sizeof (EXTR)); | |
313 | /* We use -2 as a marker to indicate that the information has | |
314 | not been set. -1 means there is no associated ifd. */ | |
315 | ret->esym.ifd = -2; | |
316 | ret->flags = 0; | |
317 | ret->got_entries = NULL; | |
318 | ret->reloc_entries = NULL; | |
319 | } | |
320 | ||
321 | return (struct bfd_hash_entry *) ret; | |
322 | } | |
323 | ||
324 | /* Create a Alpha ELF linker hash table. */ | |
325 | ||
326 | static struct bfd_link_hash_table * | |
327 | elf64_alpha_bfd_link_hash_table_create (abfd) | |
328 | bfd *abfd; | |
329 | { | |
330 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 331 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 332 | |
e2d34d7d | 333 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
334 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
335 | return NULL; | |
336 | ||
337 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
338 | elf64_alpha_link_hash_newfunc)) | |
339 | { | |
e2d34d7d | 340 | free (ret); |
252b5132 RH |
341 | return NULL; |
342 | } | |
343 | ||
344 | return &ret->root.root; | |
345 | } | |
346 | \f | |
347 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
348 | ||
349 | struct alpha_elf_obj_tdata | |
350 | { | |
351 | struct elf_obj_tdata root; | |
352 | ||
353 | /* For every input file, these are the got entries for that object's | |
354 | local symbols. */ | |
355 | struct alpha_elf_got_entry ** local_got_entries; | |
356 | ||
357 | /* For every input file, this is the object that owns the got that | |
358 | this input file uses. */ | |
359 | bfd *gotobj; | |
360 | ||
361 | /* For every got, this is a linked list through the objects using this got */ | |
362 | bfd *in_got_link_next; | |
363 | ||
364 | /* For every got, this is a link to the next got subsegment. */ | |
365 | bfd *got_link_next; | |
366 | ||
367 | /* For every got, this is the section. */ | |
368 | asection *got; | |
369 | ||
3765b1be RH |
370 | /* For every got, this is it's total number of words. */ |
371 | int total_got_size; | |
252b5132 | 372 | |
3765b1be | 373 | /* For every got, this is the sum of the number of words required |
252b5132 | 374 | to hold all of the member object's local got. */ |
3765b1be | 375 | int local_got_size; |
252b5132 RH |
376 | }; |
377 | ||
378 | #define alpha_elf_tdata(abfd) \ | |
379 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
380 | ||
b34976b6 | 381 | static bfd_boolean |
252b5132 RH |
382 | elf64_alpha_mkobject (abfd) |
383 | bfd *abfd; | |
384 | { | |
dc810e39 AM |
385 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
386 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 387 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
388 | return FALSE; |
389 | return TRUE; | |
252b5132 RH |
390 | } |
391 | ||
b34976b6 | 392 | static bfd_boolean |
252b5132 RH |
393 | elf64_alpha_object_p (abfd) |
394 | bfd *abfd; | |
395 | { | |
396 | /* Allocate our special target data. */ | |
397 | struct alpha_elf_obj_tdata *new_tdata; | |
dc810e39 AM |
398 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
399 | new_tdata = bfd_zalloc (abfd, amt); | |
252b5132 | 400 | if (new_tdata == NULL) |
b34976b6 | 401 | return FALSE; |
252b5132 RH |
402 | new_tdata->root = *abfd->tdata.elf_obj_data; |
403 | abfd->tdata.any = new_tdata; | |
404 | ||
405 | /* Set the right machine number for an Alpha ELF file. */ | |
406 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
407 | } | |
408 | \f | |
409 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
410 | from smaller values. Start with zero, widen, *then* decrement. */ | |
411 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
412 | ||
dfe57ca0 RH |
413 | #define SKIP_HOWTO(N) \ |
414 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
415 | ||
252b5132 RH |
416 | static reloc_howto_type elf64_alpha_howto_table[] = |
417 | { | |
418 | HOWTO (R_ALPHA_NONE, /* type */ | |
419 | 0, /* rightshift */ | |
420 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
421 | 8, /* bitsize */ | |
b34976b6 | 422 | TRUE, /* pc_relative */ |
252b5132 RH |
423 | 0, /* bitpos */ |
424 | complain_overflow_dont, /* complain_on_overflow */ | |
425 | elf64_alpha_reloc_nil, /* special_function */ | |
426 | "NONE", /* name */ | |
b34976b6 | 427 | FALSE, /* partial_inplace */ |
252b5132 RH |
428 | 0, /* src_mask */ |
429 | 0, /* dst_mask */ | |
b34976b6 | 430 | TRUE), /* pcrel_offset */ |
252b5132 RH |
431 | |
432 | /* A 32 bit reference to a symbol. */ | |
433 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
434 | 0, /* rightshift */ | |
435 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 32, /* bitsize */ | |
b34976b6 | 437 | FALSE, /* pc_relative */ |
252b5132 RH |
438 | 0, /* bitpos */ |
439 | complain_overflow_bitfield, /* complain_on_overflow */ | |
440 | 0, /* special_function */ | |
441 | "REFLONG", /* name */ | |
b34976b6 | 442 | FALSE, /* partial_inplace */ |
252b5132 RH |
443 | 0xffffffff, /* src_mask */ |
444 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 445 | FALSE), /* pcrel_offset */ |
252b5132 RH |
446 | |
447 | /* A 64 bit reference to a symbol. */ | |
448 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
449 | 0, /* rightshift */ | |
450 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
451 | 64, /* bitsize */ | |
b34976b6 | 452 | FALSE, /* pc_relative */ |
252b5132 RH |
453 | 0, /* bitpos */ |
454 | complain_overflow_bitfield, /* complain_on_overflow */ | |
455 | 0, /* special_function */ | |
456 | "REFQUAD", /* name */ | |
b34976b6 | 457 | FALSE, /* partial_inplace */ |
252b5132 RH |
458 | MINUS_ONE, /* src_mask */ |
459 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 460 | FALSE), /* pcrel_offset */ |
252b5132 RH |
461 | |
462 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
463 | that when the value is used the value of the gp register will be | |
464 | added in. */ | |
465 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
466 | 0, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 32, /* bitsize */ | |
b34976b6 | 469 | FALSE, /* pc_relative */ |
252b5132 RH |
470 | 0, /* bitpos */ |
471 | complain_overflow_bitfield, /* complain_on_overflow */ | |
472 | 0, /* special_function */ | |
473 | "GPREL32", /* name */ | |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
252b5132 RH |
475 | 0xffffffff, /* src_mask */ |
476 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 477 | FALSE), /* pcrel_offset */ |
252b5132 RH |
478 | |
479 | /* Used for an instruction that refers to memory off the GP register. */ | |
480 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
481 | 0, /* rightshift */ | |
dfe57ca0 | 482 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 483 | 16, /* bitsize */ |
b34976b6 | 484 | FALSE, /* pc_relative */ |
252b5132 RH |
485 | 0, /* bitpos */ |
486 | complain_overflow_signed, /* complain_on_overflow */ | |
487 | 0, /* special_function */ | |
488 | "ELF_LITERAL", /* name */ | |
b34976b6 | 489 | FALSE, /* partial_inplace */ |
252b5132 RH |
490 | 0xffff, /* src_mask */ |
491 | 0xffff, /* dst_mask */ | |
b34976b6 | 492 | FALSE), /* pcrel_offset */ |
252b5132 RH |
493 | |
494 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
495 | It identifies a use of the literal. The symbol index is special: | |
496 | 1 means the literal address is in the base register of a memory | |
497 | format instruction; 2 means the literal address is in the byte | |
498 | offset register of a byte-manipulation instruction; 3 means the | |
499 | literal address is in the target register of a jsr instruction. | |
500 | This does not actually do any relocation. */ | |
501 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
502 | 0, /* rightshift */ | |
dfe57ca0 | 503 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 504 | 32, /* bitsize */ |
b34976b6 | 505 | FALSE, /* pc_relative */ |
252b5132 RH |
506 | 0, /* bitpos */ |
507 | complain_overflow_dont, /* complain_on_overflow */ | |
508 | elf64_alpha_reloc_nil, /* special_function */ | |
509 | "LITUSE", /* name */ | |
b34976b6 | 510 | FALSE, /* partial_inplace */ |
252b5132 RH |
511 | 0, /* src_mask */ |
512 | 0, /* dst_mask */ | |
b34976b6 | 513 | FALSE), /* pcrel_offset */ |
252b5132 RH |
514 | |
515 | /* Load the gp register. This is always used for a ldah instruction | |
516 | which loads the upper 16 bits of the gp register. The symbol | |
517 | index of the GPDISP instruction is an offset in bytes to the lda | |
518 | instruction that loads the lower 16 bits. The value to use for | |
519 | the relocation is the difference between the GP value and the | |
520 | current location; the load will always be done against a register | |
521 | holding the current address. | |
522 | ||
523 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
524 | any offset is present in the instructions, it is an offset from | |
525 | the register to the ldah instruction. This lets us avoid any | |
526 | stupid hackery like inventing a gp value to do partial relocation | |
527 | against. Also unlike ECOFF, we do the whole relocation off of | |
528 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
529 | space consuming bit, that, since all the information was present | |
530 | in the GPDISP_HI16 reloc. */ | |
531 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
532 | 16, /* rightshift */ | |
533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 16, /* bitsize */ | |
b34976b6 | 535 | FALSE, /* pc_relative */ |
252b5132 RH |
536 | 0, /* bitpos */ |
537 | complain_overflow_dont, /* complain_on_overflow */ | |
538 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
539 | "GPDISP", /* name */ | |
b34976b6 | 540 | FALSE, /* partial_inplace */ |
252b5132 RH |
541 | 0xffff, /* src_mask */ |
542 | 0xffff, /* dst_mask */ | |
b34976b6 | 543 | TRUE), /* pcrel_offset */ |
252b5132 RH |
544 | |
545 | /* A 21 bit branch. */ | |
546 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
547 | 2, /* rightshift */ | |
548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
549 | 21, /* bitsize */ | |
b34976b6 | 550 | TRUE, /* pc_relative */ |
252b5132 RH |
551 | 0, /* bitpos */ |
552 | complain_overflow_signed, /* complain_on_overflow */ | |
553 | 0, /* special_function */ | |
554 | "BRADDR", /* name */ | |
b34976b6 | 555 | FALSE, /* partial_inplace */ |
252b5132 RH |
556 | 0x1fffff, /* src_mask */ |
557 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 558 | TRUE), /* pcrel_offset */ |
252b5132 RH |
559 | |
560 | /* A hint for a jump to a register. */ | |
561 | HOWTO (R_ALPHA_HINT, /* type */ | |
562 | 2, /* rightshift */ | |
dfe57ca0 | 563 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 564 | 14, /* bitsize */ |
b34976b6 | 565 | TRUE, /* pc_relative */ |
252b5132 RH |
566 | 0, /* bitpos */ |
567 | complain_overflow_dont, /* complain_on_overflow */ | |
568 | 0, /* special_function */ | |
569 | "HINT", /* name */ | |
b34976b6 | 570 | FALSE, /* partial_inplace */ |
252b5132 RH |
571 | 0x3fff, /* src_mask */ |
572 | 0x3fff, /* dst_mask */ | |
b34976b6 | 573 | TRUE), /* pcrel_offset */ |
252b5132 RH |
574 | |
575 | /* 16 bit PC relative offset. */ | |
576 | HOWTO (R_ALPHA_SREL16, /* type */ | |
577 | 0, /* rightshift */ | |
578 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
579 | 16, /* bitsize */ | |
b34976b6 | 580 | TRUE, /* pc_relative */ |
252b5132 RH |
581 | 0, /* bitpos */ |
582 | complain_overflow_signed, /* complain_on_overflow */ | |
583 | 0, /* special_function */ | |
584 | "SREL16", /* name */ | |
b34976b6 | 585 | FALSE, /* partial_inplace */ |
252b5132 RH |
586 | 0xffff, /* src_mask */ |
587 | 0xffff, /* dst_mask */ | |
b34976b6 | 588 | TRUE), /* pcrel_offset */ |
252b5132 RH |
589 | |
590 | /* 32 bit PC relative offset. */ | |
591 | HOWTO (R_ALPHA_SREL32, /* type */ | |
592 | 0, /* rightshift */ | |
593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
594 | 32, /* bitsize */ | |
b34976b6 | 595 | TRUE, /* pc_relative */ |
252b5132 RH |
596 | 0, /* bitpos */ |
597 | complain_overflow_signed, /* complain_on_overflow */ | |
598 | 0, /* special_function */ | |
599 | "SREL32", /* name */ | |
b34976b6 | 600 | FALSE, /* partial_inplace */ |
252b5132 RH |
601 | 0xffffffff, /* src_mask */ |
602 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 603 | TRUE), /* pcrel_offset */ |
252b5132 RH |
604 | |
605 | /* A 64 bit PC relative offset. */ | |
606 | HOWTO (R_ALPHA_SREL64, /* type */ | |
607 | 0, /* rightshift */ | |
608 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
609 | 64, /* bitsize */ | |
b34976b6 | 610 | TRUE, /* pc_relative */ |
252b5132 RH |
611 | 0, /* bitpos */ |
612 | complain_overflow_signed, /* complain_on_overflow */ | |
613 | 0, /* special_function */ | |
614 | "SREL64", /* name */ | |
b34976b6 | 615 | FALSE, /* partial_inplace */ |
252b5132 RH |
616 | MINUS_ONE, /* src_mask */ |
617 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 618 | TRUE), /* pcrel_offset */ |
252b5132 | 619 | |
dfe57ca0 RH |
620 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
621 | SKIP_HOWTO (12), | |
622 | SKIP_HOWTO (13), | |
623 | SKIP_HOWTO (14), | |
624 | SKIP_HOWTO (15), | |
625 | SKIP_HOWTO (16), | |
252b5132 RH |
626 | |
627 | /* The high 16 bits of the displacement from GP to the target. */ | |
628 | HOWTO (R_ALPHA_GPRELHIGH, | |
629 | 0, /* rightshift */ | |
dfe57ca0 | 630 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 631 | 16, /* bitsize */ |
b34976b6 | 632 | FALSE, /* pc_relative */ |
252b5132 RH |
633 | 0, /* bitpos */ |
634 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 635 | 0, /* special_function */ |
252b5132 | 636 | "GPRELHIGH", /* name */ |
b34976b6 | 637 | FALSE, /* partial_inplace */ |
252b5132 RH |
638 | 0xffff, /* src_mask */ |
639 | 0xffff, /* dst_mask */ | |
b34976b6 | 640 | FALSE), /* pcrel_offset */ |
252b5132 RH |
641 | |
642 | /* The low 16 bits of the displacement from GP to the target. */ | |
643 | HOWTO (R_ALPHA_GPRELLOW, | |
644 | 0, /* rightshift */ | |
dfe57ca0 | 645 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 646 | 16, /* bitsize */ |
b34976b6 | 647 | FALSE, /* pc_relative */ |
252b5132 RH |
648 | 0, /* bitpos */ |
649 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 650 | 0, /* special_function */ |
252b5132 | 651 | "GPRELLOW", /* name */ |
b34976b6 | 652 | FALSE, /* partial_inplace */ |
252b5132 RH |
653 | 0xffff, /* src_mask */ |
654 | 0xffff, /* dst_mask */ | |
b34976b6 | 655 | FALSE), /* pcrel_offset */ |
252b5132 RH |
656 | |
657 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 658 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 659 | 0, /* rightshift */ |
dfe57ca0 | 660 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 661 | 16, /* bitsize */ |
b34976b6 | 662 | FALSE, /* pc_relative */ |
252b5132 RH |
663 | 0, /* bitpos */ |
664 | complain_overflow_signed, /* complain_on_overflow */ | |
665 | 0, /* special_function */ | |
dfe57ca0 | 666 | "GPREL16", /* name */ |
b34976b6 | 667 | FALSE, /* partial_inplace */ |
252b5132 RH |
668 | 0xffff, /* src_mask */ |
669 | 0xffff, /* dst_mask */ | |
b34976b6 | 670 | FALSE), /* pcrel_offset */ |
252b5132 | 671 | |
dfe57ca0 RH |
672 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
673 | SKIP_HOWTO (20), | |
674 | SKIP_HOWTO (21), | |
675 | SKIP_HOWTO (22), | |
676 | SKIP_HOWTO (23), | |
252b5132 | 677 | |
fe8bc63d | 678 | /* Misc ELF relocations. */ |
252b5132 RH |
679 | |
680 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
681 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
682 | is present because every other ELF has one, but should not be used | |
683 | because .dynbss is an ugly thing. */ | |
684 | HOWTO (R_ALPHA_COPY, | |
685 | 0, | |
686 | 0, | |
687 | 0, | |
b34976b6 | 688 | FALSE, |
252b5132 RH |
689 | 0, |
690 | complain_overflow_dont, | |
691 | bfd_elf_generic_reloc, | |
692 | "COPY", | |
b34976b6 | 693 | FALSE, |
252b5132 RH |
694 | 0, |
695 | 0, | |
b34976b6 | 696 | TRUE), |
252b5132 RH |
697 | |
698 | /* A dynamic relocation for a .got entry. */ | |
699 | HOWTO (R_ALPHA_GLOB_DAT, | |
700 | 0, | |
701 | 0, | |
702 | 0, | |
b34976b6 | 703 | FALSE, |
252b5132 RH |
704 | 0, |
705 | complain_overflow_dont, | |
706 | bfd_elf_generic_reloc, | |
707 | "GLOB_DAT", | |
b34976b6 | 708 | FALSE, |
252b5132 RH |
709 | 0, |
710 | 0, | |
b34976b6 | 711 | TRUE), |
252b5132 RH |
712 | |
713 | /* A dynamic relocation for a .plt entry. */ | |
714 | HOWTO (R_ALPHA_JMP_SLOT, | |
715 | 0, | |
716 | 0, | |
717 | 0, | |
b34976b6 | 718 | FALSE, |
252b5132 RH |
719 | 0, |
720 | complain_overflow_dont, | |
721 | bfd_elf_generic_reloc, | |
722 | "JMP_SLOT", | |
b34976b6 | 723 | FALSE, |
252b5132 RH |
724 | 0, |
725 | 0, | |
b34976b6 | 726 | TRUE), |
252b5132 RH |
727 | |
728 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
729 | HOWTO (R_ALPHA_RELATIVE, | |
730 | 0, | |
731 | 0, | |
732 | 0, | |
b34976b6 | 733 | FALSE, |
252b5132 RH |
734 | 0, |
735 | complain_overflow_dont, | |
736 | bfd_elf_generic_reloc, | |
737 | "RELATIVE", | |
b34976b6 | 738 | FALSE, |
252b5132 RH |
739 | 0, |
740 | 0, | |
b34976b6 | 741 | TRUE), |
7793f4d0 RH |
742 | |
743 | /* A 21 bit branch that adjusts for gp loads. */ | |
744 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
745 | 2, /* rightshift */ | |
746 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
747 | 21, /* bitsize */ | |
b34976b6 | 748 | TRUE, /* pc_relative */ |
7793f4d0 RH |
749 | 0, /* bitpos */ |
750 | complain_overflow_signed, /* complain_on_overflow */ | |
751 | 0, /* special_function */ | |
752 | "BRSGP", /* name */ | |
b34976b6 | 753 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
754 | 0x1fffff, /* src_mask */ |
755 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 756 | TRUE), /* pcrel_offset */ |
3765b1be RH |
757 | |
758 | /* Creates a tls_index for the symbol in the got. */ | |
759 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
760 | 0, /* rightshift */ | |
761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
762 | 16, /* bitsize */ | |
b34976b6 | 763 | FALSE, /* pc_relative */ |
3765b1be RH |
764 | 0, /* bitpos */ |
765 | complain_overflow_signed, /* complain_on_overflow */ | |
766 | 0, /* special_function */ | |
767 | "TLSGD", /* name */ | |
b34976b6 | 768 | FALSE, /* partial_inplace */ |
3765b1be RH |
769 | 0xffff, /* src_mask */ |
770 | 0xffff, /* dst_mask */ | |
b34976b6 | 771 | FALSE), /* pcrel_offset */ |
3765b1be RH |
772 | |
773 | /* Creates a tls_index for the (current) module in the got. */ | |
774 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
775 | 0, /* rightshift */ | |
776 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
777 | 16, /* bitsize */ | |
b34976b6 | 778 | FALSE, /* pc_relative */ |
3765b1be RH |
779 | 0, /* bitpos */ |
780 | complain_overflow_signed, /* complain_on_overflow */ | |
781 | 0, /* special_function */ | |
782 | "TLSLDM", /* name */ | |
b34976b6 | 783 | FALSE, /* partial_inplace */ |
3765b1be RH |
784 | 0xffff, /* src_mask */ |
785 | 0xffff, /* dst_mask */ | |
b34976b6 | 786 | FALSE), /* pcrel_offset */ |
3765b1be RH |
787 | |
788 | /* A dynamic relocation for a DTP module entry. */ | |
789 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
790 | 0, /* rightshift */ | |
791 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
792 | 64, /* bitsize */ | |
b34976b6 | 793 | FALSE, /* pc_relative */ |
3765b1be RH |
794 | 0, /* bitpos */ |
795 | complain_overflow_bitfield, /* complain_on_overflow */ | |
796 | 0, /* special_function */ | |
797 | "DTPMOD64", /* name */ | |
b34976b6 | 798 | FALSE, /* partial_inplace */ |
3765b1be RH |
799 | MINUS_ONE, /* src_mask */ |
800 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 801 | FALSE), /* pcrel_offset */ |
3765b1be RH |
802 | |
803 | /* Creates a 64-bit offset in the got for the displacement | |
804 | from DTP to the target. */ | |
805 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
806 | 0, /* rightshift */ | |
807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
808 | 16, /* bitsize */ | |
b34976b6 | 809 | FALSE, /* pc_relative */ |
3765b1be RH |
810 | 0, /* bitpos */ |
811 | complain_overflow_signed, /* complain_on_overflow */ | |
812 | 0, /* special_function */ | |
813 | "GOTDTPREL", /* name */ | |
b34976b6 | 814 | FALSE, /* partial_inplace */ |
3765b1be RH |
815 | 0xffff, /* src_mask */ |
816 | 0xffff, /* dst_mask */ | |
b34976b6 | 817 | FALSE), /* pcrel_offset */ |
3765b1be RH |
818 | |
819 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
820 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
821 | 0, /* rightshift */ | |
822 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
823 | 64, /* bitsize */ | |
b34976b6 | 824 | FALSE, /* pc_relative */ |
3765b1be RH |
825 | 0, /* bitpos */ |
826 | complain_overflow_bitfield, /* complain_on_overflow */ | |
827 | 0, /* special_function */ | |
828 | "DTPREL64", /* name */ | |
b34976b6 | 829 | FALSE, /* partial_inplace */ |
3765b1be RH |
830 | MINUS_ONE, /* src_mask */ |
831 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 832 | FALSE), /* pcrel_offset */ |
3765b1be RH |
833 | |
834 | /* The high 16 bits of the displacement from DTP to the target. */ | |
835 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
836 | 0, /* rightshift */ | |
837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
838 | 16, /* bitsize */ | |
b34976b6 | 839 | FALSE, /* pc_relative */ |
3765b1be RH |
840 | 0, /* bitpos */ |
841 | complain_overflow_signed, /* complain_on_overflow */ | |
842 | 0, /* special_function */ | |
843 | "DTPRELHI", /* name */ | |
b34976b6 | 844 | FALSE, /* partial_inplace */ |
3765b1be RH |
845 | 0xffff, /* src_mask */ |
846 | 0xffff, /* dst_mask */ | |
b34976b6 | 847 | FALSE), /* pcrel_offset */ |
3765b1be RH |
848 | |
849 | /* The low 16 bits of the displacement from DTP to the target. */ | |
850 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
851 | 0, /* rightshift */ | |
852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 16, /* bitsize */ | |
b34976b6 | 854 | FALSE, /* pc_relative */ |
3765b1be RH |
855 | 0, /* bitpos */ |
856 | complain_overflow_dont, /* complain_on_overflow */ | |
857 | 0, /* special_function */ | |
858 | "DTPRELLO", /* name */ | |
b34976b6 | 859 | FALSE, /* partial_inplace */ |
3765b1be RH |
860 | 0xffff, /* src_mask */ |
861 | 0xffff, /* dst_mask */ | |
b34976b6 | 862 | FALSE), /* pcrel_offset */ |
3765b1be RH |
863 | |
864 | /* A 16-bit displacement from DTP to the target. */ | |
865 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
866 | 0, /* rightshift */ | |
867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 16, /* bitsize */ | |
b34976b6 | 869 | FALSE, /* pc_relative */ |
3765b1be RH |
870 | 0, /* bitpos */ |
871 | complain_overflow_signed, /* complain_on_overflow */ | |
872 | 0, /* special_function */ | |
873 | "DTPREL16", /* name */ | |
b34976b6 | 874 | FALSE, /* partial_inplace */ |
3765b1be RH |
875 | 0xffff, /* src_mask */ |
876 | 0xffff, /* dst_mask */ | |
b34976b6 | 877 | FALSE), /* pcrel_offset */ |
3765b1be RH |
878 | |
879 | /* Creates a 64-bit offset in the got for the displacement | |
880 | from TP to the target. */ | |
881 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
882 | 0, /* rightshift */ | |
883 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
884 | 16, /* bitsize */ | |
b34976b6 | 885 | FALSE, /* pc_relative */ |
3765b1be RH |
886 | 0, /* bitpos */ |
887 | complain_overflow_signed, /* complain_on_overflow */ | |
888 | 0, /* special_function */ | |
889 | "GOTTPREL", /* name */ | |
b34976b6 | 890 | FALSE, /* partial_inplace */ |
3765b1be RH |
891 | 0xffff, /* src_mask */ |
892 | 0xffff, /* dst_mask */ | |
b34976b6 | 893 | FALSE), /* pcrel_offset */ |
3765b1be RH |
894 | |
895 | /* A dynamic relocation for a displacement from TP to the target. */ | |
896 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
897 | 0, /* rightshift */ | |
898 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
899 | 64, /* bitsize */ | |
b34976b6 | 900 | FALSE, /* pc_relative */ |
3765b1be RH |
901 | 0, /* bitpos */ |
902 | complain_overflow_bitfield, /* complain_on_overflow */ | |
903 | 0, /* special_function */ | |
904 | "TPREL64", /* name */ | |
b34976b6 | 905 | FALSE, /* partial_inplace */ |
3765b1be RH |
906 | MINUS_ONE, /* src_mask */ |
907 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 908 | FALSE), /* pcrel_offset */ |
3765b1be RH |
909 | |
910 | /* The high 16 bits of the displacement from TP to the target. */ | |
911 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
912 | 0, /* rightshift */ | |
913 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
914 | 16, /* bitsize */ | |
b34976b6 | 915 | FALSE, /* pc_relative */ |
3765b1be RH |
916 | 0, /* bitpos */ |
917 | complain_overflow_signed, /* complain_on_overflow */ | |
918 | 0, /* special_function */ | |
919 | "TPRELHI", /* name */ | |
b34976b6 | 920 | FALSE, /* partial_inplace */ |
3765b1be RH |
921 | 0xffff, /* src_mask */ |
922 | 0xffff, /* dst_mask */ | |
b34976b6 | 923 | FALSE), /* pcrel_offset */ |
3765b1be RH |
924 | |
925 | /* The low 16 bits of the displacement from TP to the target. */ | |
926 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
927 | 0, /* rightshift */ | |
928 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
929 | 16, /* bitsize */ | |
b34976b6 | 930 | FALSE, /* pc_relative */ |
3765b1be RH |
931 | 0, /* bitpos */ |
932 | complain_overflow_dont, /* complain_on_overflow */ | |
933 | 0, /* special_function */ | |
934 | "TPRELLO", /* name */ | |
b34976b6 | 935 | FALSE, /* partial_inplace */ |
3765b1be RH |
936 | 0xffff, /* src_mask */ |
937 | 0xffff, /* dst_mask */ | |
b34976b6 | 938 | FALSE), /* pcrel_offset */ |
3765b1be RH |
939 | |
940 | /* A 16-bit displacement from TP to the target. */ | |
941 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
942 | 0, /* rightshift */ | |
943 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
944 | 16, /* bitsize */ | |
b34976b6 | 945 | FALSE, /* pc_relative */ |
3765b1be RH |
946 | 0, /* bitpos */ |
947 | complain_overflow_signed, /* complain_on_overflow */ | |
948 | 0, /* special_function */ | |
949 | "TPREL16", /* name */ | |
b34976b6 | 950 | FALSE, /* partial_inplace */ |
3765b1be RH |
951 | 0xffff, /* src_mask */ |
952 | 0xffff, /* dst_mask */ | |
b34976b6 | 953 | FALSE), /* pcrel_offset */ |
252b5132 RH |
954 | }; |
955 | ||
956 | /* A relocation function which doesn't do anything. */ | |
957 | ||
958 | static bfd_reloc_status_type | |
959 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 960 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 961 | arelent *reloc; |
56fc028e AJ |
962 | asymbol *sym ATTRIBUTE_UNUSED; |
963 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
964 | asection *sec; |
965 | bfd *output_bfd; | |
56fc028e | 966 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
967 | { |
968 | if (output_bfd) | |
969 | reloc->address += sec->output_offset; | |
970 | return bfd_reloc_ok; | |
971 | } | |
972 | ||
973 | /* A relocation function used for an unsupported reloc. */ | |
974 | ||
975 | static bfd_reloc_status_type | |
976 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 977 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 978 | arelent *reloc; |
56fc028e AJ |
979 | asymbol *sym ATTRIBUTE_UNUSED; |
980 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
981 | asection *sec; |
982 | bfd *output_bfd; | |
56fc028e | 983 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
984 | { |
985 | if (output_bfd) | |
986 | reloc->address += sec->output_offset; | |
987 | return bfd_reloc_notsupported; | |
988 | } | |
989 | ||
990 | /* Do the work of the GPDISP relocation. */ | |
991 | ||
992 | static bfd_reloc_status_type | |
993 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) | |
994 | bfd *abfd; | |
995 | bfd_vma gpdisp; | |
996 | bfd_byte *p_ldah; | |
997 | bfd_byte *p_lda; | |
998 | { | |
999 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
1000 | bfd_vma addend; | |
1001 | unsigned long i_ldah, i_lda; | |
1002 | ||
1003 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
1004 | i_lda = bfd_get_32 (abfd, p_lda); | |
1005 | ||
1006 | /* Complain if the instructions are not correct. */ | |
1007 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
1008 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
1009 | ret = bfd_reloc_dangerous; | |
1010 | ||
1011 | /* Extract the user-supplied offset, mirroring the sign extensions | |
1012 | that the instructions perform. */ | |
1013 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
1014 | addend = (addend ^ 0x80008000) - 0x80008000; | |
1015 | ||
1016 | gpdisp += addend; | |
1017 | ||
1018 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
1019 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
1020 | ret = bfd_reloc_overflow; | |
1021 | ||
1022 | /* compensate for the sign extension again. */ | |
1023 | i_ldah = ((i_ldah & 0xffff0000) | |
1024 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
1025 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
1026 | ||
dc810e39 AM |
1027 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); |
1028 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
252b5132 RH |
1029 | |
1030 | return ret; | |
1031 | } | |
1032 | ||
1033 | /* The special function for the GPDISP reloc. */ | |
1034 | ||
1035 | static bfd_reloc_status_type | |
1036 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, | |
1037 | output_bfd, err_msg) | |
1038 | bfd *abfd; | |
1039 | arelent *reloc_entry; | |
56fc028e | 1040 | asymbol *sym ATTRIBUTE_UNUSED; |
252b5132 RH |
1041 | PTR data; |
1042 | asection *input_section; | |
1043 | bfd *output_bfd; | |
1044 | char **err_msg; | |
1045 | { | |
1046 | bfd_reloc_status_type ret; | |
1047 | bfd_vma gp, relocation; | |
1048 | bfd_byte *p_ldah, *p_lda; | |
1049 | ||
1050 | /* Don't do anything if we're not doing a final link. */ | |
1051 | if (output_bfd) | |
1052 | { | |
1053 | reloc_entry->address += input_section->output_offset; | |
1054 | return bfd_reloc_ok; | |
1055 | } | |
1056 | ||
1057 | if (reloc_entry->address > input_section->_cooked_size || | |
1058 | reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) | |
1059 | return bfd_reloc_outofrange; | |
1060 | ||
1061 | /* The gp used in the portion of the output object to which this | |
1062 | input object belongs is cached on the input bfd. */ | |
1063 | gp = _bfd_get_gp_value (abfd); | |
1064 | ||
1065 | relocation = (input_section->output_section->vma | |
1066 | + input_section->output_offset | |
1067 | + reloc_entry->address); | |
1068 | ||
1069 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
1070 | p_lda = p_ldah + reloc_entry->addend; | |
1071 | ||
1072 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
1073 | ||
1074 | /* Complain if the instructions are not correct. */ | |
1075 | if (ret == bfd_reloc_dangerous) | |
1076 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
1077 | ||
1078 | return ret; | |
1079 | } | |
1080 | ||
1081 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ | |
1082 | ||
1083 | struct elf_reloc_map | |
1084 | { | |
1085 | bfd_reloc_code_real_type bfd_reloc_val; | |
1086 | int elf_reloc_val; | |
1087 | }; | |
1088 | ||
1089 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1090 | { | |
dfe57ca0 RH |
1091 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1092 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1093 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1094 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1095 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1096 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1097 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1098 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1099 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1100 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1101 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1102 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1103 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1104 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1105 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1106 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1107 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1108 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1109 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1110 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1111 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1112 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1113 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1114 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1115 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1116 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1117 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1118 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1119 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1120 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1121 | }; |
1122 | ||
1123 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1124 | ||
1125 | static reloc_howto_type * | |
1126 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) | |
56fc028e | 1127 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1128 | bfd_reloc_code_real_type code; |
1129 | { | |
1130 | const struct elf_reloc_map *i, *e; | |
1131 | i = e = elf64_alpha_reloc_map; | |
1132 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1133 | for (; i != e; ++i) | |
1134 | { | |
1135 | if (i->bfd_reloc_val == code) | |
1136 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1137 | } | |
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1142 | ||
1143 | static void | |
1144 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) | |
56fc028e | 1145 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 1146 | arelent *cache_ptr; |
947216bf | 1147 | Elf_Internal_Rela *dst; |
252b5132 RH |
1148 | { |
1149 | unsigned r_type; | |
1150 | ||
1151 | r_type = ELF64_R_TYPE(dst->r_info); | |
1152 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); | |
1153 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1154 | } | |
3765b1be RH |
1155 | |
1156 | /* These two relocations create a two-word entry in the got. */ | |
1157 | #define alpha_got_entry_size(r_type) \ | |
1158 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1159 | |
1160 | /* This is PT_TLS segment p_vaddr. */ | |
1161 | #define alpha_get_dtprel_base(tlss) \ | |
1162 | ((tlss)->start) | |
1163 | ||
1164 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1165 | is assigned offset round(16, PT_TLS p_align). */ | |
1166 | #define alpha_get_tprel_base(tlss) \ | |
1167 | ((tlss)->start - align_power ((bfd_vma) 16, (tlss)->align)) | |
252b5132 | 1168 | \f |
fe8bc63d | 1169 | /* These functions do relaxation for Alpha ELF. |
252b5132 RH |
1170 | |
1171 | Currently I'm only handling what I can do with existing compiler | |
1172 | and assembler support, which means no instructions are removed, | |
1173 | though some may be nopped. At this time GCC does not emit enough | |
1174 | information to do all of the relaxing that is possible. It will | |
1175 | take some not small amount of work for that to happen. | |
1176 | ||
1177 | There are a couple of interesting papers that I once read on this | |
1178 | subject, that I cannot find references to at the moment, that | |
1179 | related to Alpha in particular. They are by David Wall, then of | |
1180 | DEC WRL. */ | |
1181 | ||
1182 | #define OP_LDA 0x08 | |
1183 | #define OP_LDAH 0x09 | |
1184 | #define INSN_JSR 0x68004000 | |
1185 | #define INSN_JSR_MASK 0xfc00c000 | |
1186 | #define OP_LDQ 0x29 | |
1187 | #define OP_BR 0x30 | |
1188 | #define OP_BSR 0x34 | |
f304919d | 1189 | #define INSN_UNOP 0x2ffe0000 |
9e756d64 RH |
1190 | #define INSN_ADDQ 0x40000400 |
1191 | #define INSN_RDUNIQ 0x0000009e | |
252b5132 RH |
1192 | |
1193 | struct alpha_relax_info | |
1194 | { | |
1195 | bfd *abfd; | |
1196 | asection *sec; | |
1197 | bfd_byte *contents; | |
9e756d64 | 1198 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
1199 | Elf_Internal_Rela *relocs, *relend; |
1200 | struct bfd_link_info *link_info; | |
9e756d64 | 1201 | struct elf_link_tls_segment *tls_segment; |
252b5132 RH |
1202 | bfd_vma gp; |
1203 | bfd *gotobj; | |
1204 | asection *tsec; | |
1205 | struct alpha_elf_link_hash_entry *h; | |
9e756d64 | 1206 | struct alpha_elf_got_entry **first_gotent; |
252b5132 | 1207 | struct alpha_elf_got_entry *gotent; |
b34976b6 AM |
1208 | bfd_boolean changed_contents; |
1209 | bfd_boolean changed_relocs; | |
252b5132 RH |
1210 | unsigned char other; |
1211 | }; | |
1212 | ||
b34976b6 | 1213 | static bfd_boolean elf64_alpha_relax_with_lituse |
fe8bc63d | 1214 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
252b5132 | 1215 | Elf_Internal_Rela *irel)); |
252b5132 RH |
1216 | static bfd_vma elf64_alpha_relax_opt_call |
1217 | PARAMS((struct alpha_relax_info *info, bfd_vma symval)); | |
b34976b6 | 1218 | static bfd_boolean elf64_alpha_relax_got_load |
9e756d64 RH |
1219 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
1220 | Elf_Internal_Rela *irel, unsigned long)); | |
b34976b6 | 1221 | static bfd_boolean elf64_alpha_relax_gprelhilo |
9e756d64 | 1222 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
b34976b6 AM |
1223 | Elf_Internal_Rela *irel, bfd_boolean)); |
1224 | static bfd_boolean elf64_alpha_relax_tls_get_addr | |
9e756d64 | 1225 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
b34976b6 | 1226 | Elf_Internal_Rela *irel, bfd_boolean)); |
9e756d64 RH |
1227 | static struct elf_link_tls_segment *elf64_alpha_relax_find_tls_segment |
1228 | PARAMS((struct alpha_relax_info *, struct elf_link_tls_segment *)); | |
b34976b6 | 1229 | static bfd_boolean elf64_alpha_relax_section |
252b5132 | 1230 | PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, |
b34976b6 | 1231 | bfd_boolean *again)); |
252b5132 RH |
1232 | |
1233 | static Elf_Internal_Rela * | |
1234 | elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) | |
1235 | Elf_Internal_Rela *rel, *relend; | |
1236 | bfd_vma offset; | |
1237 | int type; | |
1238 | { | |
1239 | while (rel < relend) | |
1240 | { | |
52b9d213 AM |
1241 | if (rel->r_offset == offset |
1242 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
252b5132 RH |
1243 | return rel; |
1244 | ++rel; | |
1245 | } | |
1246 | return NULL; | |
1247 | } | |
1248 | ||
b34976b6 | 1249 | static bfd_boolean |
9e756d64 | 1250 | elf64_alpha_relax_with_lituse (info, symval, irel) |
252b5132 RH |
1251 | struct alpha_relax_info *info; |
1252 | bfd_vma symval; | |
9e756d64 | 1253 | Elf_Internal_Rela *irel; |
252b5132 | 1254 | { |
9e756d64 | 1255 | Elf_Internal_Rela *urel, *irelend = info->relend; |
252b5132 RH |
1256 | int flags, count, i; |
1257 | bfd_signed_vma disp; | |
b34976b6 AM |
1258 | bfd_boolean fits16; |
1259 | bfd_boolean fits32; | |
1260 | bfd_boolean lit_reused = FALSE; | |
1261 | bfd_boolean all_optimized = TRUE; | |
252b5132 RH |
1262 | unsigned int lit_insn; |
1263 | ||
1264 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1265 | if (lit_insn >> 26 != OP_LDQ) | |
1266 | { | |
1267 | ((*_bfd_error_handler) | |
1268 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", | |
8f615d07 AM |
1269 | bfd_archive_filename (info->abfd), info->sec->name, |
1270 | (unsigned long) irel->r_offset)); | |
b34976b6 | 1271 | return TRUE; |
252b5132 RH |
1272 | } |
1273 | ||
9e756d64 RH |
1274 | /* Can't relax dynamic symbols. */ |
1275 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
b34976b6 | 1276 | return TRUE; |
9e756d64 | 1277 | |
252b5132 RH |
1278 | /* Summarize how this particular LITERAL is used. */ |
1279 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
1280 | { | |
1281 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) | |
1282 | break; | |
1e738b87 | 1283 | if (urel->r_addend <= 3) |
252b5132 RH |
1284 | flags |= 1 << urel->r_addend; |
1285 | } | |
1286 | ||
fe8bc63d | 1287 | /* A little preparation for the loop... */ |
252b5132 | 1288 | disp = symval - info->gp; |
252b5132 RH |
1289 | |
1290 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) | |
1291 | { | |
1292 | unsigned int insn; | |
ffcb7aff NC |
1293 | int insn_disp; |
1294 | bfd_signed_vma xdisp; | |
1295 | ||
252b5132 RH |
1296 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
1297 | ||
1298 | switch (urel->r_addend) | |
1299 | { | |
9e756d64 RH |
1300 | case LITUSE_ALPHA_ADDR: |
1301 | default: | |
252b5132 RH |
1302 | /* This type is really just a placeholder to note that all |
1303 | uses cannot be optimized, but to still allow some. */ | |
b34976b6 | 1304 | all_optimized = FALSE; |
252b5132 RH |
1305 | break; |
1306 | ||
9e756d64 | 1307 | case LITUSE_ALPHA_BASE: |
252b5132 | 1308 | /* We can always optimize 16-bit displacements. */ |
ffcb7aff NC |
1309 | |
1310 | /* Extract the displacement from the instruction, sign-extending | |
1311 | it if necessary, then test whether it is within 16 or 32 bits | |
1312 | displacement from GP. */ | |
1313 | insn_disp = insn & 0x0000ffff; | |
9e756d64 RH |
1314 | if (insn_disp & 0x8000) |
1315 | insn_disp |= ~0xffff; /* Negative: sign-extend. */ | |
ffcb7aff NC |
1316 | |
1317 | xdisp = disp + insn_disp; | |
9e756d64 RH |
1318 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); |
1319 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
1320 | && xdisp < 0x7fff8000); | |
ffcb7aff | 1321 | |
252b5132 RH |
1322 | if (fits16) |
1323 | { | |
ffcb7aff | 1324 | /* Take the op code and dest from this insn, take the base |
fe8bc63d | 1325 | register from the literal insn. Leave the offset alone. */ |
ffcb7aff | 1326 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); |
252b5132 | 1327 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
dfe57ca0 | 1328 | R_ALPHA_GPREL16); |
252b5132 | 1329 | urel->r_addend = irel->r_addend; |
b34976b6 | 1330 | info->changed_relocs = TRUE; |
252b5132 | 1331 | |
dc810e39 AM |
1332 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1333 | info->contents + urel->r_offset); | |
b34976b6 | 1334 | info->changed_contents = TRUE; |
252b5132 RH |
1335 | } |
1336 | ||
1337 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ | |
1338 | else if (fits32 && !(flags & ~6)) | |
1339 | { | |
ffcb7aff | 1340 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ |
252b5132 RH |
1341 | |
1342 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1343 | R_ALPHA_GPRELHIGH); | |
1344 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
dc810e39 | 1345 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, |
252b5132 | 1346 | info->contents + irel->r_offset); |
b34976b6 AM |
1347 | lit_reused = TRUE; |
1348 | info->changed_contents = TRUE; | |
252b5132 RH |
1349 | |
1350 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1351 | R_ALPHA_GPRELLOW); | |
1352 | urel->r_addend = irel->r_addend; | |
b34976b6 | 1353 | info->changed_relocs = TRUE; |
252b5132 RH |
1354 | } |
1355 | else | |
b34976b6 | 1356 | all_optimized = FALSE; |
252b5132 RH |
1357 | break; |
1358 | ||
9e756d64 | 1359 | case LITUSE_ALPHA_BYTOFF: |
252b5132 RH |
1360 | /* We can always optimize byte instructions. */ |
1361 | ||
1362 | /* FIXME: sanity check the insn for byte op. Check that the | |
1363 | literal dest reg is indeed Rb in the byte insn. */ | |
1364 | ||
dc810e39 AM |
1365 | insn &= ~ (unsigned) 0x001ff000; |
1366 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 RH |
1367 | |
1368 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1369 | urel->r_addend = 0; | |
b34976b6 | 1370 | info->changed_relocs = TRUE; |
252b5132 | 1371 | |
dc810e39 AM |
1372 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1373 | info->contents + urel->r_offset); | |
b34976b6 | 1374 | info->changed_contents = TRUE; |
252b5132 RH |
1375 | break; |
1376 | ||
9e756d64 RH |
1377 | case LITUSE_ALPHA_JSR: |
1378 | case LITUSE_ALPHA_TLSGD: | |
1379 | case LITUSE_ALPHA_TLSLDM: | |
252b5132 | 1380 | { |
f44f99a5 | 1381 | bfd_vma optdest, org; |
252b5132 RH |
1382 | bfd_signed_vma odisp; |
1383 | ||
f44f99a5 RH |
1384 | /* If not zero, place to jump without needing pv. */ |
1385 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
1386 | org = (info->sec->output_section->vma | |
1387 | + info->sec->output_offset | |
1388 | + urel->r_offset + 4); | |
252b5132 | 1389 | odisp = (optdest ? optdest : symval) - org; |
f44f99a5 | 1390 | |
252b5132 RH |
1391 | if (odisp >= -0x400000 && odisp < 0x400000) |
1392 | { | |
1393 | Elf_Internal_Rela *xrel; | |
1394 | ||
fe8bc63d | 1395 | /* Preserve branch prediction call stack when possible. */ |
252b5132 RH |
1396 | if ((insn & INSN_JSR_MASK) == INSN_JSR) |
1397 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
1398 | else | |
1399 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
fe8bc63d | 1400 | |
252b5132 RH |
1401 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
1402 | R_ALPHA_BRADDR); | |
1403 | urel->r_addend = irel->r_addend; | |
1404 | ||
1405 | if (optdest) | |
1406 | urel->r_addend += optdest - symval; | |
1407 | else | |
b34976b6 | 1408 | all_optimized = FALSE; |
252b5132 | 1409 | |
dc810e39 AM |
1410 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1411 | info->contents + urel->r_offset); | |
252b5132 RH |
1412 | |
1413 | /* Kill any HINT reloc that might exist for this insn. */ | |
1414 | xrel = (elf64_alpha_find_reloc_at_ofs | |
fe8bc63d | 1415 | (info->relocs, info->relend, urel->r_offset, |
252b5132 RH |
1416 | R_ALPHA_HINT)); |
1417 | if (xrel) | |
1418 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1419 | ||
b34976b6 AM |
1420 | info->changed_contents = TRUE; |
1421 | info->changed_relocs = TRUE; | |
252b5132 RH |
1422 | } |
1423 | else | |
b34976b6 | 1424 | all_optimized = FALSE; |
252b5132 | 1425 | |
1cd6895c RH |
1426 | /* Even if the target is not in range for a direct branch, |
1427 | if we share a GP, we can eliminate the gp reload. */ | |
1428 | if (optdest) | |
1429 | { | |
1430 | Elf_Internal_Rela *gpdisp | |
1431 | = (elf64_alpha_find_reloc_at_ofs | |
9e756d64 RH |
1432 | (info->relocs, irelend, urel->r_offset + 4, |
1433 | R_ALPHA_GPDISP)); | |
1cd6895c RH |
1434 | if (gpdisp) |
1435 | { | |
cedb70c5 | 1436 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; |
1cd6895c RH |
1437 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; |
1438 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
1439 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
1440 | ||
1441 | /* Verify that the instruction is "ldah $29,0($26)". | |
1442 | Consider a function that ends in a noreturn call, | |
1443 | and that the next function begins with an ldgp, | |
1444 | and that by accident there is no padding between. | |
1445 | In that case the insn would use $27 as the base. */ | |
1446 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
1447 | { | |
dc810e39 AM |
1448 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); |
1449 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
1cd6895c RH |
1450 | |
1451 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
b34976b6 AM |
1452 | info->changed_contents = TRUE; |
1453 | info->changed_relocs = TRUE; | |
1cd6895c RH |
1454 | } |
1455 | } | |
1456 | } | |
252b5132 RH |
1457 | } |
1458 | break; | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | /* If all cases were optimized, we can reduce the use count on this | |
1463 | got entry by one, possibly eliminating it. */ | |
1464 | if (all_optimized) | |
1465 | { | |
3765b1be RH |
1466 | if (--info->gotent->use_count == 0) |
1467 | { | |
9e756d64 RH |
1468 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
1469 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3765b1be | 1470 | if (!info->h) |
9e756d64 | 1471 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; |
3765b1be | 1472 | } |
252b5132 RH |
1473 | |
1474 | /* If the literal instruction is no longer needed (it may have been | |
3765b1be RH |
1475 | reused. We can eliminate it. */ |
1476 | /* ??? For now, I don't want to deal with compacting the section, | |
252b5132 RH |
1477 | so just nop it out. */ |
1478 | if (!lit_reused) | |
1479 | { | |
1480 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
b34976b6 | 1481 | info->changed_relocs = TRUE; |
252b5132 | 1482 | |
dc810e39 AM |
1483 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
1484 | info->contents + irel->r_offset); | |
b34976b6 | 1485 | info->changed_contents = TRUE; |
252b5132 RH |
1486 | } |
1487 | } | |
1488 | ||
b34976b6 | 1489 | return TRUE; |
252b5132 RH |
1490 | } |
1491 | ||
1492 | static bfd_vma | |
1493 | elf64_alpha_relax_opt_call (info, symval) | |
1494 | struct alpha_relax_info *info; | |
1495 | bfd_vma symval; | |
1496 | { | |
1497 | /* If the function has the same gp, and we can identify that the | |
1498 | function does not use its function pointer, we can eliminate the | |
1499 | address load. */ | |
1500 | ||
1501 | /* If the symbol is marked NOPV, we are being told the function never | |
1502 | needs its procedure value. */ | |
c810873d | 1503 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) |
252b5132 RH |
1504 | return symval; |
1505 | ||
1506 | /* If the symbol is marked STD_GP, we are being told the function does | |
fe8bc63d | 1507 | a normal ldgp in the first two words. */ |
c810873d | 1508 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) |
252b5132 RH |
1509 | ; |
1510 | ||
1511 | /* Otherwise, we may be able to identify a GP load in the first two | |
1512 | words, which we can then skip. */ | |
fe8bc63d | 1513 | else |
252b5132 RH |
1514 | { |
1515 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; | |
1516 | bfd_vma ofs; | |
1517 | ||
fe8bc63d | 1518 | /* Load the relocations from the section that the target symbol is in. */ |
252b5132 RH |
1519 | if (info->sec == info->tsec) |
1520 | { | |
1521 | tsec_relocs = info->relocs; | |
1522 | tsec_relend = info->relend; | |
1523 | tsec_free = NULL; | |
1524 | } | |
1525 | else | |
1526 | { | |
45d6a902 | 1527 | tsec_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
1528 | (info->abfd, info->tsec, (PTR) NULL, |
1529 | (Elf_Internal_Rela *) NULL, | |
1530 | info->link_info->keep_memory)); | |
1531 | if (tsec_relocs == NULL) | |
1532 | return 0; | |
1533 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
1534 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
1535 | } | |
1536 | ||
1537 | /* Recover the symbol's offset within the section. */ | |
1538 | ofs = (symval - info->tsec->output_section->vma | |
1539 | - info->tsec->output_offset); | |
fe8bc63d | 1540 | |
252b5132 RH |
1541 | /* Look for a GPDISP reloc. */ |
1542 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
1543 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
1544 | ||
1545 | if (!gpdisp || gpdisp->r_addend != 4) | |
1546 | { | |
1547 | if (tsec_free) | |
1548 | free (tsec_free); | |
1549 | return 0; | |
1550 | } | |
1551 | if (tsec_free) | |
1552 | free (tsec_free); | |
1553 | } | |
1554 | ||
fe8bc63d | 1555 | /* We've now determined that we can skip an initial gp load. Verify |
252b5132 RH |
1556 | that the call and the target use the same gp. */ |
1557 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
1558 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
1559 | return 0; | |
1560 | ||
1561 | return symval + 8; | |
1562 | } | |
1563 | ||
b34976b6 | 1564 | static bfd_boolean |
9e756d64 | 1565 | elf64_alpha_relax_got_load (info, symval, irel, r_type) |
252b5132 RH |
1566 | struct alpha_relax_info *info; |
1567 | bfd_vma symval; | |
1568 | Elf_Internal_Rela *irel; | |
9e756d64 | 1569 | unsigned long r_type; |
252b5132 RH |
1570 | { |
1571 | unsigned int insn; | |
1572 | bfd_signed_vma disp; | |
1573 | ||
1574 | /* Get the instruction. */ | |
1575 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1576 | ||
1577 | if (insn >> 26 != OP_LDQ) | |
1578 | { | |
9e756d64 | 1579 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; |
252b5132 | 1580 | ((*_bfd_error_handler) |
9e756d64 | 1581 | ("%s: %s+0x%lx: warning: %s relocation against unexpected insn", |
8f615d07 | 1582 | bfd_archive_filename (info->abfd), info->sec->name, |
9e756d64 | 1583 | (unsigned long) irel->r_offset, howto->name)); |
b34976b6 | 1584 | return TRUE; |
252b5132 RH |
1585 | } |
1586 | ||
9e756d64 RH |
1587 | /* Can't relax dynamic symbols. */ |
1588 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
b34976b6 | 1589 | return TRUE; |
252b5132 | 1590 | |
9e756d64 RH |
1591 | /* Can't use local-exec relocations in shared libraries. */ |
1592 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
b34976b6 | 1593 | return TRUE; |
252b5132 | 1594 | |
9e756d64 RH |
1595 | if (r_type == R_ALPHA_LITERAL) |
1596 | disp = symval - info->gp; | |
1597 | else | |
1598 | { | |
1599 | bfd_vma dtp_base, tp_base; | |
1600 | ||
1601 | BFD_ASSERT (info->tls_segment != NULL); | |
1602 | dtp_base = alpha_get_dtprel_base (info->tls_segment); | |
1603 | tp_base = alpha_get_tprel_base (info->tls_segment); | |
1604 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
1605 | } | |
252b5132 | 1606 | |
9e756d64 | 1607 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 1608 | return TRUE; |
9e756d64 RH |
1609 | |
1610 | /* Exchange LDQ for LDA. In the case of the TLS relocs, we're loading | |
1611 | a constant, so force the base register to be $31. */ | |
1612 | if (r_type == R_ALPHA_LITERAL) | |
1613 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
1614 | else | |
1615 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
dc810e39 | 1616 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
b34976b6 | 1617 | info->changed_contents = TRUE; |
cedb70c5 | 1618 | |
1bbc9cec RH |
1619 | /* Reduce the use count on this got entry by one, possibly |
1620 | eliminating it. */ | |
1621 | if (--info->gotent->use_count == 0) | |
1622 | { | |
1623 | int sz = alpha_got_entry_size (r_type); | |
1624 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1625 | if (!info->h) | |
1626 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
1627 | } | |
1628 | ||
1629 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ | |
9e756d64 RH |
1630 | switch (r_type) |
1631 | { | |
1632 | case R_ALPHA_LITERAL: | |
1633 | r_type = R_ALPHA_GPREL16; | |
1634 | break; | |
1635 | case R_ALPHA_GOTDTPREL: | |
1636 | r_type = R_ALPHA_DTPREL16; | |
1637 | break; | |
1638 | case R_ALPHA_GOTTPREL: | |
1639 | r_type = R_ALPHA_TPREL16; | |
1640 | break; | |
1641 | default: | |
1642 | BFD_ASSERT (0); | |
b34976b6 | 1643 | return FALSE; |
9e756d64 | 1644 | } |
252b5132 | 1645 | |
9e756d64 | 1646 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); |
b34976b6 | 1647 | info->changed_relocs = TRUE; |
252b5132 | 1648 | |
252b5132 RH |
1649 | /* ??? Search forward through this basic block looking for insns |
1650 | that use the target register. Stop after an insn modifying the | |
1651 | register is seen, or after a branch or call. | |
1652 | ||
1653 | Any such memory load insn may be substituted by a load directly | |
1654 | off the GP. This allows the memory load insn to be issued before | |
fe8bc63d | 1655 | the calculated GP register would otherwise be ready. |
252b5132 RH |
1656 | |
1657 | Any such jsr insn can be replaced by a bsr if it is in range. | |
1658 | ||
1659 | This would mean that we'd have to _add_ relocations, the pain of | |
1660 | which gives one pause. */ | |
1661 | ||
b34976b6 | 1662 | return TRUE; |
252b5132 RH |
1663 | } |
1664 | ||
b34976b6 | 1665 | static bfd_boolean |
9e756d64 RH |
1666 | elf64_alpha_relax_gprelhilo (info, symval, irel, hi) |
1667 | struct alpha_relax_info *info; | |
1668 | bfd_vma symval; | |
1669 | Elf_Internal_Rela *irel; | |
b34976b6 | 1670 | bfd_boolean hi; |
9e756d64 RH |
1671 | { |
1672 | unsigned int insn; | |
1673 | bfd_signed_vma disp; | |
1674 | bfd_byte *pos = info->contents + irel->r_offset; | |
1675 | ||
1676 | /* ??? This assumes that the compiler doesn't render | |
1677 | ||
1678 | array[i] | |
1679 | as | |
1680 | ldah t, array(gp) !gprelhigh | |
1681 | s8addl i, t, t | |
1682 | ldq r, array(t) !gprellow | |
1683 | ||
1684 | which would indeed be the most efficient way to implement this. */ | |
1685 | ||
b34976b6 | 1686 | return TRUE; |
9e756d64 RH |
1687 | |
1688 | disp = symval - info->gp; | |
1689 | if (disp < -0x8000 || disp >= 0x8000) | |
b34976b6 | 1690 | return TRUE; |
9e756d64 RH |
1691 | |
1692 | if (hi) | |
1693 | { | |
1694 | /* Nop out the high instruction. */ | |
1695 | ||
1696 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos); | |
b34976b6 | 1697 | info->changed_contents = TRUE; |
9e756d64 RH |
1698 | |
1699 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1700 | irel->r_addend = 0; | |
b34976b6 | 1701 | info->changed_relocs = TRUE; |
9e756d64 RH |
1702 | } |
1703 | else | |
1704 | { | |
1705 | /* Adjust the low instruction to reference GP directly. */ | |
1706 | ||
1707 | insn = bfd_get_32 (info->abfd, pos); | |
1708 | insn = (insn & 0xffe00000) | (29 << 16); | |
1709 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos); | |
b34976b6 | 1710 | info->changed_contents = TRUE; |
9e756d64 RH |
1711 | |
1712 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1713 | R_ALPHA_GPREL16); | |
b34976b6 | 1714 | info->changed_relocs = TRUE; |
9e756d64 RH |
1715 | } |
1716 | ||
b34976b6 | 1717 | return TRUE; |
9e756d64 RH |
1718 | } |
1719 | ||
b34976b6 | 1720 | static bfd_boolean |
9e756d64 RH |
1721 | elf64_alpha_relax_tls_get_addr (info, symval, irel, is_gd) |
1722 | struct alpha_relax_info *info; | |
1723 | bfd_vma symval; | |
1724 | Elf_Internal_Rela *irel; | |
b34976b6 | 1725 | bfd_boolean is_gd; |
9e756d64 RH |
1726 | { |
1727 | bfd_byte *pos[5]; | |
1728 | unsigned int insn; | |
1729 | Elf_Internal_Rela *gpdisp, *hint; | |
1bbc9cec | 1730 | bfd_boolean dynamic, use_gottprel, pos1_unusable; |
cc03ec80 | 1731 | unsigned long new_symndx; |
9e756d64 RH |
1732 | |
1733 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); | |
1734 | ||
9e756d64 RH |
1735 | /* If a TLS symbol is accessed using IE at least once, there is no point |
1736 | to use dynamic model for it. */ | |
1737 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
1738 | ; | |
1739 | ||
1740 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, | |
1741 | then we might as well relax to IE. */ | |
1742 | else if (info->link_info->shared && !dynamic | |
1743 | && (info->link_info->flags & DF_STATIC_TLS)) | |
1744 | ; | |
1745 | ||
1746 | /* Otherwise we must be building an executable to do anything. */ | |
1747 | else if (info->link_info->shared) | |
b34976b6 | 1748 | return TRUE; |
9e756d64 RH |
1749 | |
1750 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and | |
1751 | the matching LITUSE_TLS relocations. */ | |
1752 | if (irel + 2 >= info->relend) | |
b34976b6 | 1753 | return TRUE; |
9e756d64 RH |
1754 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL |
1755 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
1756 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
b34976b6 | 1757 | return TRUE; |
9e756d64 RH |
1758 | |
1759 | /* There must be a GPDISP relocation positioned immediately after the | |
1760 | LITUSE relocation. */ | |
1761 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
1762 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
1763 | if (!gpdisp) | |
b34976b6 | 1764 | return TRUE; |
9e756d64 RH |
1765 | |
1766 | pos[0] = info->contents + irel[0].r_offset; | |
1767 | pos[1] = info->contents + irel[1].r_offset; | |
1768 | pos[2] = info->contents + irel[2].r_offset; | |
1769 | pos[3] = info->contents + gpdisp->r_offset; | |
1770 | pos[4] = pos[3] + gpdisp->r_addend; | |
1bbc9cec | 1771 | pos1_unusable = FALSE; |
9e756d64 | 1772 | |
1bbc9cec RH |
1773 | /* Generally, the positions are not allowed to be out of order, lest the |
1774 | modified insn sequence have different register lifetimes. We can make | |
1775 | an exception when pos 1 is adjacent to pos 0. */ | |
1776 | if (pos[1] + 4 == pos[0]) | |
9e756d64 RH |
1777 | { |
1778 | bfd_byte *tmp = pos[0]; | |
1779 | pos[0] = pos[1]; | |
1780 | pos[1] = tmp; | |
1781 | } | |
1bbc9cec RH |
1782 | else if (pos[1] < pos[0]) |
1783 | pos1_unusable = TRUE; | |
1784 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
b34976b6 | 1785 | return TRUE; |
9e756d64 RH |
1786 | |
1787 | /* Reduce the use count on the LITERAL relocation. Do this before we | |
1788 | smash the symndx when we adjust the relocations below. */ | |
1789 | { | |
1790 | struct alpha_elf_got_entry *lit_gotent; | |
1791 | struct alpha_elf_link_hash_entry *lit_h; | |
1792 | unsigned long indx; | |
1793 | ||
1794 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); | |
1795 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
1796 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
1797 | ||
1798 | while (lit_h->root.root.type == bfd_link_hash_indirect | |
1799 | || lit_h->root.root.type == bfd_link_hash_warning) | |
1800 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
1801 | ||
1802 | for (lit_gotent = lit_h->got_entries; lit_gotent ; | |
1803 | lit_gotent = lit_gotent->next) | |
1804 | if (lit_gotent->gotobj == info->gotobj | |
1805 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
1806 | && lit_gotent->addend == irel[1].r_addend) | |
1807 | break; | |
1808 | BFD_ASSERT (lit_gotent); | |
1809 | ||
1810 | if (--lit_gotent->use_count == 0) | |
1811 | { | |
1812 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
1813 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | /* Change | |
1818 | ||
1819 | lda $16,x($gp) !tlsgd!1 | |
1820 | ldq $27,__tls_get_addr($gp) !literal!1 | |
1821 | jsr $26,($27)__tls_get_addr !lituse_tlsgd!1 | |
1822 | ldah $29,0($26) !gpdisp!2 | |
1823 | lda $29,0($29) !gpdisp!2 | |
1824 | to | |
1825 | ldq $16,x($gp) !gottprel | |
1826 | unop | |
1827 | call_pal rduniq | |
1828 | addq $16,$0,$0 | |
1829 | unop | |
1830 | or the first pair to | |
1831 | lda $16,x($gp) !tprel | |
1832 | unop | |
1833 | or | |
1834 | ldah $16,x($gp) !tprelhi | |
1835 | lda $16,x($16) !tprello | |
1836 | ||
1837 | as appropriate. */ | |
1838 | ||
b34976b6 | 1839 | use_gottprel = FALSE; |
cc03ec80 | 1840 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; |
9e756d64 RH |
1841 | switch (!dynamic && !info->link_info->shared) |
1842 | { | |
1843 | case 1: | |
1844 | { | |
1845 | bfd_vma tp_base; | |
1846 | bfd_signed_vma disp; | |
1847 | ||
1848 | BFD_ASSERT (info->tls_segment != NULL); | |
1849 | tp_base = alpha_get_tprel_base (info->tls_segment); | |
1850 | disp = symval - tp_base; | |
1851 | ||
1852 | if (disp >= -0x8000 && disp < 0x8000) | |
1853 | { | |
1854 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
1855 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1856 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
1857 | ||
1858 | irel[0].r_offset = pos[0] - info->contents; | |
cc03ec80 | 1859 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); |
9e756d64 RH |
1860 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
1861 | break; | |
1862 | } | |
1863 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
1bbc9cec RH |
1864 | && disp < (bfd_signed_vma) 0x7fff8000 |
1865 | && !pos1_unusable) | |
9e756d64 RH |
1866 | { |
1867 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
1868 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1869 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
1870 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
1871 | ||
1872 | irel[0].r_offset = pos[0] - info->contents; | |
cc03ec80 | 1873 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); |
9e756d64 | 1874 | irel[1].r_offset = pos[1] - info->contents; |
cc03ec80 | 1875 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); |
9e756d64 RH |
1876 | break; |
1877 | } | |
1878 | } | |
1879 | /* FALLTHRU */ | |
1880 | ||
1881 | default: | |
b34976b6 | 1882 | use_gottprel = TRUE; |
9e756d64 RH |
1883 | |
1884 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
1885 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1886 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
1887 | ||
1888 | irel[0].r_offset = pos[0] - info->contents; | |
cc03ec80 | 1889 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); |
9e756d64 RH |
1890 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
1891 | break; | |
1892 | } | |
1893 | ||
1894 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); | |
1895 | ||
1896 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); | |
1897 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
1898 | ||
1899 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); | |
1900 | ||
1901 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1902 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1903 | ||
1904 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
1905 | irel[2].r_offset, R_ALPHA_HINT); | |
1906 | if (hint) | |
1907 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1908 | ||
b34976b6 AM |
1909 | info->changed_contents = TRUE; |
1910 | info->changed_relocs = TRUE; | |
9e756d64 RH |
1911 | |
1912 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ | |
1913 | if (--info->gotent->use_count == 0) | |
1914 | { | |
1915 | int sz = alpha_got_entry_size (info->gotent->reloc_type); | |
1916 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1917 | if (!info->h) | |
1918 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
1919 | } | |
1920 | ||
1921 | /* If we've switched to a GOTTPREL relocation, increment the reference | |
1922 | count on that got entry. */ | |
1923 | if (use_gottprel) | |
1924 | { | |
1925 | struct alpha_elf_got_entry *tprel_gotent; | |
1926 | ||
1927 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; | |
1928 | tprel_gotent = tprel_gotent->next) | |
1929 | if (tprel_gotent->gotobj == info->gotobj | |
1930 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
1931 | && tprel_gotent->addend == irel->r_addend) | |
1932 | break; | |
1933 | if (tprel_gotent) | |
1934 | tprel_gotent->use_count++; | |
1935 | else | |
1936 | { | |
1937 | if (info->gotent->use_count == 0) | |
1938 | tprel_gotent = info->gotent; | |
1939 | else | |
1940 | { | |
1941 | tprel_gotent = (struct alpha_elf_got_entry *) | |
1942 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
1943 | if (!tprel_gotent) | |
b34976b6 | 1944 | return FALSE; |
9e756d64 RH |
1945 | |
1946 | tprel_gotent->next = *info->first_gotent; | |
1947 | *info->first_gotent = tprel_gotent; | |
1948 | ||
1949 | tprel_gotent->gotobj = info->gotobj; | |
1950 | tprel_gotent->addend = irel->r_addend; | |
1951 | tprel_gotent->got_offset = -1; | |
1952 | tprel_gotent->reloc_done = 0; | |
1953 | tprel_gotent->reloc_xlated = 0; | |
1954 | } | |
1955 | ||
1956 | tprel_gotent->use_count = 1; | |
1957 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
1958 | } | |
1959 | } | |
1960 | ||
b34976b6 | 1961 | return TRUE; |
9e756d64 RH |
1962 | } |
1963 | ||
1964 | static struct elf_link_tls_segment * | |
1965 | elf64_alpha_relax_find_tls_segment (info, seg) | |
1966 | struct alpha_relax_info *info; | |
1967 | struct elf_link_tls_segment *seg; | |
1968 | { | |
1969 | bfd *output_bfd = info->sec->output_section->owner; | |
048d873d | 1970 | asection *o; |
9e756d64 RH |
1971 | unsigned int align; |
1972 | bfd_vma base, end; | |
1973 | ||
1974 | for (o = output_bfd->sections; o ; o = o->next) | |
1975 | if ((o->flags & SEC_THREAD_LOCAL) != 0 | |
1976 | && (o->flags & SEC_LOAD) != 0) | |
048d873d RH |
1977 | break; |
1978 | if (!o) | |
9e756d64 RH |
1979 | return NULL; |
1980 | ||
048d873d | 1981 | base = o->vma; |
9e756d64 RH |
1982 | align = 0; |
1983 | ||
048d873d | 1984 | do |
9e756d64 RH |
1985 | { |
1986 | bfd_vma size; | |
1987 | ||
1988 | if (bfd_get_section_alignment (output_bfd, o) > align) | |
1989 | align = bfd_get_section_alignment (output_bfd, o); | |
1990 | ||
1991 | size = o->_raw_size; | |
1992 | if (size == 0 && (o->flags & SEC_HAS_CONTENTS) == 0) | |
1993 | { | |
1994 | struct bfd_link_order *lo; | |
1995 | for (lo = o->link_order_head; lo ; lo = lo->next) | |
1996 | if (size < lo->offset + lo->size) | |
1997 | size = lo->offset + lo->size; | |
1998 | } | |
1999 | end = o->vma + size; | |
048d873d | 2000 | o = o->next; |
9e756d64 | 2001 | } |
048d873d | 2002 | while (o && (o->flags & SEC_THREAD_LOCAL)); |
9e756d64 RH |
2003 | |
2004 | seg->start = base; | |
2005 | seg->size = end - base; | |
2006 | seg->align = align; | |
2007 | ||
2008 | return seg; | |
2009 | } | |
2010 | ||
b34976b6 | 2011 | static bfd_boolean |
252b5132 RH |
2012 | elf64_alpha_relax_section (abfd, sec, link_info, again) |
2013 | bfd *abfd; | |
2014 | asection *sec; | |
2015 | struct bfd_link_info *link_info; | |
b34976b6 | 2016 | bfd_boolean *again; |
252b5132 RH |
2017 | { |
2018 | Elf_Internal_Shdr *symtab_hdr; | |
2019 | Elf_Internal_Rela *internal_relocs; | |
252b5132 | 2020 | Elf_Internal_Rela *irel, *irelend; |
6cdc0ccc | 2021 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
2022 | struct alpha_elf_got_entry **local_got_entries; |
2023 | struct alpha_relax_info info; | |
9e756d64 | 2024 | struct elf_link_tls_segment tls_segment; |
252b5132 RH |
2025 | |
2026 | /* We are not currently changing any sizes, so only one pass. */ | |
b34976b6 | 2027 | *again = FALSE; |
252b5132 | 2028 | |
1049f94e | 2029 | if (link_info->relocatable |
252b5132 RH |
2030 | || (sec->flags & SEC_RELOC) == 0 |
2031 | || sec->reloc_count == 0) | |
b34976b6 | 2032 | return TRUE; |
252b5132 RH |
2033 | |
2034 | /* If this is the first time we have been called for this section, | |
2035 | initialize the cooked size. */ | |
2036 | if (sec->_cooked_size == 0) | |
2037 | sec->_cooked_size = sec->_raw_size; | |
2038 | ||
2039 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2040 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2041 | ||
2042 | /* Load the relocations for this section. */ | |
45d6a902 | 2043 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
2044 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2045 | link_info->keep_memory)); | |
2046 | if (internal_relocs == NULL) | |
b34976b6 | 2047 | return FALSE; |
252b5132 | 2048 | |
fe8bc63d | 2049 | memset(&info, 0, sizeof (info)); |
252b5132 RH |
2050 | info.abfd = abfd; |
2051 | info.sec = sec; | |
2052 | info.link_info = link_info; | |
9e756d64 | 2053 | info.symtab_hdr = symtab_hdr; |
252b5132 RH |
2054 | info.relocs = internal_relocs; |
2055 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
2056 | ||
cedb70c5 | 2057 | /* Find the GP for this object. Do not store the result back via |
b646261c | 2058 | _bfd_set_gp_value, since this could change again before final. */ |
252b5132 RH |
2059 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; |
2060 | if (info.gotobj) | |
2061 | { | |
2062 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; | |
b646261c RH |
2063 | info.gp = (sgot->output_section->vma |
2064 | + sgot->output_offset | |
2065 | + 0x8000); | |
252b5132 RH |
2066 | } |
2067 | ||
9e756d64 RH |
2068 | /* Get the section contents. */ |
2069 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2070 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
2071 | else | |
252b5132 | 2072 | { |
9e756d64 | 2073 | info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size); |
252b5132 | 2074 | if (info.contents == NULL) |
9e756d64 | 2075 | goto error_return; |
252b5132 | 2076 | |
9e756d64 RH |
2077 | if (! bfd_get_section_contents (abfd, sec, info.contents, |
2078 | (file_ptr) 0, sec->_raw_size)) | |
2079 | goto error_return; | |
2080 | } | |
252b5132 | 2081 | |
9e756d64 RH |
2082 | /* Compute the TLS segment information. The version normally found in |
2083 | elf_hash_table (link_info)->tls_segment isn't built until final_link. | |
2084 | ??? Probably should look into extracting this into a common function. */ | |
2085 | info.tls_segment = elf64_alpha_relax_find_tls_segment (&info, &tls_segment); | |
2086 | ||
2087 | for (irel = internal_relocs; irel < irelend; irel++) | |
2088 | { | |
2089 | bfd_vma symval; | |
9e756d64 RH |
2090 | struct alpha_elf_got_entry *gotent; |
2091 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
cc03ec80 | 2092 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); |
9e756d64 RH |
2093 | |
2094 | /* Early exit for unhandled or unrelaxable relocations. */ | |
2095 | switch (r_type) | |
2096 | { | |
2097 | case R_ALPHA_LITERAL: | |
2098 | case R_ALPHA_GPRELHIGH: | |
2099 | case R_ALPHA_GPRELLOW: | |
2100 | case R_ALPHA_GOTDTPREL: | |
2101 | case R_ALPHA_GOTTPREL: | |
2102 | case R_ALPHA_TLSGD: | |
cc03ec80 RH |
2103 | break; |
2104 | ||
9e756d64 | 2105 | case R_ALPHA_TLSLDM: |
cc03ec80 RH |
2106 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
2107 | reloc to the 0 symbol so that they all match. */ | |
2108 | r_symndx = 0; | |
9e756d64 | 2109 | break; |
cc03ec80 | 2110 | |
9e756d64 RH |
2111 | default: |
2112 | continue; | |
252b5132 RH |
2113 | } |
2114 | ||
2115 | /* Get the value of the symbol referred to by the reloc. */ | |
cc03ec80 | 2116 | if (r_symndx < symtab_hdr->sh_info) |
252b5132 RH |
2117 | { |
2118 | /* A local symbol. */ | |
6cdc0ccc AM |
2119 | Elf_Internal_Sym *isym; |
2120 | ||
2121 | /* Read this BFD's local symbols. */ | |
2122 | if (isymbuf == NULL) | |
2123 | { | |
2124 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2125 | if (isymbuf == NULL) | |
2126 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2127 | symtab_hdr->sh_info, 0, | |
2128 | NULL, NULL, NULL); | |
2129 | if (isymbuf == NULL) | |
2130 | goto error_return; | |
2131 | } | |
2132 | ||
cc03ec80 RH |
2133 | isym = isymbuf + r_symndx; |
2134 | ||
2135 | /* Given the symbol for a TLSLDM reloc is ignored, this also | |
2136 | means forcing the symbol value to the tp base. */ | |
2137 | if (r_type == R_ALPHA_TLSLDM) | |
2138 | { | |
2139 | info.tsec = bfd_abs_section_ptr; | |
2140 | symval = alpha_get_tprel_base (info.tls_segment); | |
2141 | } | |
fe8bc63d | 2142 | else |
cc03ec80 RH |
2143 | { |
2144 | symval = isym->st_value; | |
2145 | if (isym->st_shndx == SHN_UNDEF) | |
2146 | continue; | |
2147 | else if (isym->st_shndx == SHN_ABS) | |
2148 | info.tsec = bfd_abs_section_ptr; | |
2149 | else if (isym->st_shndx == SHN_COMMON) | |
2150 | info.tsec = bfd_com_section_ptr; | |
2151 | else | |
2152 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2153 | } | |
252b5132 RH |
2154 | |
2155 | info.h = NULL; | |
6cdc0ccc | 2156 | info.other = isym->st_other; |
c328dc3f JJ |
2157 | if (local_got_entries) |
2158 | info.first_gotent = &local_got_entries[r_symndx]; | |
2159 | else | |
2160 | { | |
2161 | info.first_gotent = &info.gotent; | |
2162 | info.gotent = NULL; | |
2163 | } | |
252b5132 RH |
2164 | } |
2165 | else | |
2166 | { | |
2167 | unsigned long indx; | |
2168 | struct alpha_elf_link_hash_entry *h; | |
2169 | ||
cc03ec80 | 2170 | indx = r_symndx - symtab_hdr->sh_info; |
252b5132 RH |
2171 | h = alpha_elf_sym_hashes (abfd)[indx]; |
2172 | BFD_ASSERT (h != NULL); | |
2173 | ||
2174 | while (h->root.root.type == bfd_link_hash_indirect | |
2175 | || h->root.root.type == bfd_link_hash_warning) | |
2176 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2177 | ||
4a67a098 RH |
2178 | /* If the symbol is undefined, we can't do anything with it. */ |
2179 | if (h->root.root.type == bfd_link_hash_undefweak | |
2180 | || h->root.root.type == bfd_link_hash_undefined) | |
2181 | continue; | |
2182 | ||
2183 | /* If the symbol isn't defined in the current module, again | |
2184 | we can't do anything. */ | |
2185 | if (!(h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
cc03ec80 RH |
2186 | { |
2187 | /* Except for TLSGD relocs, which can sometimes be | |
2188 | relaxed to GOTTPREL relocs. */ | |
2189 | if (r_type != R_ALPHA_TLSGD) | |
2190 | continue; | |
2191 | info.tsec = bfd_abs_section_ptr; | |
2192 | symval = 0; | |
2193 | } | |
2194 | else | |
2195 | { | |
2196 | info.tsec = h->root.root.u.def.section; | |
2197 | symval = h->root.root.u.def.value; | |
2198 | } | |
4a67a098 | 2199 | |
252b5132 | 2200 | info.h = h; |
252b5132 | 2201 | info.other = h->root.other; |
9e756d64 | 2202 | info.first_gotent = &h->got_entries; |
252b5132 RH |
2203 | } |
2204 | ||
2205 | /* Search for the got entry to be used by this relocation. */ | |
9e756d64 RH |
2206 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) |
2207 | if (gotent->gotobj == info.gotobj | |
2208 | && gotent->reloc_type == r_type | |
2209 | && gotent->addend == irel->r_addend) | |
2210 | break; | |
252b5132 RH |
2211 | info.gotent = gotent; |
2212 | ||
2213 | symval += info.tsec->output_section->vma + info.tsec->output_offset; | |
2214 | symval += irel->r_addend; | |
2215 | ||
9e756d64 RH |
2216 | switch (r_type) |
2217 | { | |
2218 | case R_ALPHA_LITERAL: | |
2219 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 2220 | |
9e756d64 RH |
2221 | /* If there exist LITUSE relocations immediately following, this |
2222 | opens up all sorts of interesting optimizations, because we | |
2223 | now know every location that this address load is used. */ | |
2224 | if (irel+1 < irelend | |
2225 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
2226 | { | |
2227 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) | |
2228 | goto error_return; | |
2229 | } | |
2230 | else | |
2231 | { | |
2232 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
2233 | goto error_return; | |
2234 | } | |
2235 | break; | |
252b5132 | 2236 | |
9e756d64 RH |
2237 | case R_ALPHA_GPRELHIGH: |
2238 | case R_ALPHA_GPRELLOW: | |
2239 | if (!elf64_alpha_relax_gprelhilo (&info, symval, irel, | |
2240 | r_type == R_ALPHA_GPRELHIGH)) | |
252b5132 | 2241 | goto error_return; |
9e756d64 RH |
2242 | break; |
2243 | ||
2244 | case R_ALPHA_GOTDTPREL: | |
2245 | case R_ALPHA_GOTTPREL: | |
2246 | BFD_ASSERT(info.gotent != NULL); | |
2247 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
252b5132 | 2248 | goto error_return; |
9e756d64 RH |
2249 | break; |
2250 | ||
2251 | case R_ALPHA_TLSGD: | |
2252 | case R_ALPHA_TLSLDM: | |
2253 | BFD_ASSERT(info.gotent != NULL); | |
2254 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
2255 | r_type == R_ALPHA_TLSGD)) | |
2256 | goto error_return; | |
2257 | break; | |
252b5132 RH |
2258 | } |
2259 | } | |
2260 | ||
f44f99a5 | 2261 | if (!elf64_alpha_size_plt_section (link_info)) |
b34976b6 | 2262 | return FALSE; |
f44f99a5 | 2263 | if (!elf64_alpha_size_got_sections (link_info)) |
b34976b6 | 2264 | return FALSE; |
f44f99a5 | 2265 | if (!elf64_alpha_size_rela_got_section (link_info)) |
b34976b6 | 2266 | return FALSE; |
252b5132 | 2267 | |
6cdc0ccc AM |
2268 | if (isymbuf != NULL |
2269 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2270 | { | |
2271 | if (!link_info->keep_memory) | |
2272 | free (isymbuf); | |
2273 | else | |
2274 | { | |
2275 | /* Cache the symbols for elf_link_input_bfd. */ | |
2276 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2277 | } | |
2278 | } | |
252b5132 | 2279 | |
6cdc0ccc AM |
2280 | if (info.contents != NULL |
2281 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
252b5132 | 2282 | { |
6cdc0ccc AM |
2283 | if (!info.changed_contents && !link_info->keep_memory) |
2284 | free (info.contents); | |
252b5132 RH |
2285 | else |
2286 | { | |
2287 | /* Cache the section contents for elf_link_input_bfd. */ | |
2288 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
2289 | } | |
2290 | } | |
2291 | ||
6cdc0ccc | 2292 | if (elf_section_data (sec)->relocs != internal_relocs) |
252b5132 | 2293 | { |
6cdc0ccc AM |
2294 | if (!info.changed_relocs) |
2295 | free (internal_relocs); | |
252b5132 | 2296 | else |
6cdc0ccc | 2297 | elf_section_data (sec)->relocs = internal_relocs; |
252b5132 RH |
2298 | } |
2299 | ||
2300 | *again = info.changed_contents || info.changed_relocs; | |
2301 | ||
b34976b6 | 2302 | return TRUE; |
252b5132 RH |
2303 | |
2304 | error_return: | |
6cdc0ccc AM |
2305 | if (isymbuf != NULL |
2306 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2307 | free (isymbuf); | |
2308 | if (info.contents != NULL | |
2309 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
2310 | free (info.contents); | |
2311 | if (internal_relocs != NULL | |
2312 | && elf_section_data (sec)->relocs != internal_relocs) | |
2313 | free (internal_relocs); | |
b34976b6 | 2314 | return FALSE; |
252b5132 RH |
2315 | } |
2316 | \f | |
2317 | /* PLT/GOT Stuff */ | |
2318 | #define PLT_HEADER_SIZE 32 | |
dc810e39 AM |
2319 | #define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */ |
2320 | #define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */ | |
2321 | #define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */ | |
2322 | #define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */ | |
252b5132 RH |
2323 | |
2324 | #define PLT_ENTRY_SIZE 12 | |
2325 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ | |
2326 | #define PLT_ENTRY_WORD2 0 | |
2327 | #define PLT_ENTRY_WORD3 0 | |
2328 | ||
3765b1be | 2329 | #define MAX_GOT_SIZE (64*1024) |
252b5132 RH |
2330 | |
2331 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
2332 | \f | |
2333 | /* Handle an Alpha specific section when reading an object file. This | |
2334 | is called when elfcode.h finds a section with an unknown type. | |
2335 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
2336 | how to. */ | |
2337 | ||
b34976b6 | 2338 | static bfd_boolean |
252b5132 RH |
2339 | elf64_alpha_section_from_shdr (abfd, hdr, name) |
2340 | bfd *abfd; | |
947216bf | 2341 | Elf_Internal_Shdr *hdr; |
90937f86 | 2342 | const char *name; |
252b5132 RH |
2343 | { |
2344 | asection *newsect; | |
2345 | ||
2346 | /* There ought to be a place to keep ELF backend specific flags, but | |
2347 | at the moment there isn't one. We just keep track of the | |
2348 | sections by their name, instead. Fortunately, the ABI gives | |
2349 | suggested names for all the MIPS specific sections, so we will | |
2350 | probably get away with this. */ | |
2351 | switch (hdr->sh_type) | |
2352 | { | |
2353 | case SHT_ALPHA_DEBUG: | |
2354 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 2355 | return FALSE; |
252b5132 | 2356 | break; |
252b5132 | 2357 | default: |
b34976b6 | 2358 | return FALSE; |
252b5132 RH |
2359 | } |
2360 | ||
2361 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
b34976b6 | 2362 | return FALSE; |
252b5132 RH |
2363 | newsect = hdr->bfd_section; |
2364 | ||
2365 | if (hdr->sh_type == SHT_ALPHA_DEBUG) | |
2366 | { | |
2367 | if (! bfd_set_section_flags (abfd, newsect, | |
2368 | (bfd_get_section_flags (abfd, newsect) | |
2369 | | SEC_DEBUGGING))) | |
b34976b6 | 2370 | return FALSE; |
252b5132 RH |
2371 | } |
2372 | ||
b34976b6 | 2373 | return TRUE; |
252b5132 RH |
2374 | } |
2375 | ||
204692d7 RH |
2376 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
2377 | ||
b34976b6 | 2378 | static bfd_boolean |
204692d7 RH |
2379 | elf64_alpha_section_flags (flags, hdr) |
2380 | flagword *flags; | |
947216bf | 2381 | Elf_Internal_Shdr *hdr; |
204692d7 RH |
2382 | { |
2383 | if (hdr->sh_flags & SHF_ALPHA_GPREL) | |
2384 | *flags |= SEC_SMALL_DATA; | |
2385 | ||
b34976b6 | 2386 | return TRUE; |
204692d7 RH |
2387 | } |
2388 | ||
252b5132 RH |
2389 | /* Set the correct type for an Alpha ELF section. We do this by the |
2390 | section name, which is a hack, but ought to work. */ | |
2391 | ||
b34976b6 | 2392 | static bfd_boolean |
252b5132 RH |
2393 | elf64_alpha_fake_sections (abfd, hdr, sec) |
2394 | bfd *abfd; | |
947216bf | 2395 | Elf_Internal_Shdr *hdr; |
252b5132 RH |
2396 | asection *sec; |
2397 | { | |
2398 | register const char *name; | |
2399 | ||
2400 | name = bfd_get_section_name (abfd, sec); | |
2401 | ||
2402 | if (strcmp (name, ".mdebug") == 0) | |
2403 | { | |
2404 | hdr->sh_type = SHT_ALPHA_DEBUG; | |
2405 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
2406 | entsize of 0. FIXME: Does this matter? */ | |
2407 | if ((abfd->flags & DYNAMIC) != 0 ) | |
2408 | hdr->sh_entsize = 0; | |
2409 | else | |
2410 | hdr->sh_entsize = 1; | |
2411 | } | |
204692d7 RH |
2412 | else if ((sec->flags & SEC_SMALL_DATA) |
2413 | || strcmp (name, ".sdata") == 0 | |
252b5132 RH |
2414 | || strcmp (name, ".sbss") == 0 |
2415 | || strcmp (name, ".lit4") == 0 | |
2416 | || strcmp (name, ".lit8") == 0) | |
2417 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
2418 | ||
b34976b6 | 2419 | return TRUE; |
252b5132 RH |
2420 | } |
2421 | ||
2422 | /* Hook called by the linker routine which adds symbols from an object | |
2423 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
2424 | ||
b34976b6 | 2425 | static bfd_boolean |
252b5132 RH |
2426 | elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
2427 | bfd *abfd; | |
2428 | struct bfd_link_info *info; | |
2429 | const Elf_Internal_Sym *sym; | |
56fc028e AJ |
2430 | const char **namep ATTRIBUTE_UNUSED; |
2431 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
2432 | asection **secp; |
2433 | bfd_vma *valp; | |
2434 | { | |
2435 | if (sym->st_shndx == SHN_COMMON | |
1049f94e | 2436 | && !info->relocatable |
c0846b23 | 2437 | && sym->st_size <= elf_gp_size (abfd)) |
252b5132 RH |
2438 | { |
2439 | /* Common symbols less than or equal to -G nn bytes are | |
2440 | automatically put into .sbss. */ | |
2441 | ||
2442 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
2443 | ||
2444 | if (scomm == NULL) | |
2445 | { | |
2446 | scomm = bfd_make_section (abfd, ".scommon"); | |
2447 | if (scomm == NULL | |
2448 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC | |
2449 | | SEC_IS_COMMON | |
2450 | | SEC_LINKER_CREATED))) | |
b34976b6 | 2451 | return FALSE; |
252b5132 RH |
2452 | } |
2453 | ||
2454 | *secp = scomm; | |
2455 | *valp = sym->st_size; | |
2456 | } | |
2457 | ||
b34976b6 | 2458 | return TRUE; |
252b5132 RH |
2459 | } |
2460 | ||
2461 | /* Create the .got section. */ | |
2462 | ||
b34976b6 | 2463 | static bfd_boolean |
252b5132 RH |
2464 | elf64_alpha_create_got_section(abfd, info) |
2465 | bfd *abfd; | |
56fc028e | 2466 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
2467 | { |
2468 | asection *s; | |
2469 | ||
2470 | if (bfd_get_section_by_name (abfd, ".got")) | |
b34976b6 | 2471 | return TRUE; |
252b5132 RH |
2472 | |
2473 | s = bfd_make_section (abfd, ".got"); | |
2474 | if (s == NULL | |
2475 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2476 | | SEC_HAS_CONTENTS | |
2477 | | SEC_IN_MEMORY | |
2478 | | SEC_LINKER_CREATED)) | |
2479 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2480 | return FALSE; |
252b5132 RH |
2481 | |
2482 | alpha_elf_tdata (abfd)->got = s; | |
2483 | ||
b34976b6 | 2484 | return TRUE; |
252b5132 RH |
2485 | } |
2486 | ||
2487 | /* Create all the dynamic sections. */ | |
2488 | ||
b34976b6 | 2489 | static bfd_boolean |
252b5132 RH |
2490 | elf64_alpha_create_dynamic_sections (abfd, info) |
2491 | bfd *abfd; | |
2492 | struct bfd_link_info *info; | |
2493 | { | |
2494 | asection *s; | |
2495 | struct elf_link_hash_entry *h; | |
14a793b2 | 2496 | struct bfd_link_hash_entry *bh; |
252b5132 RH |
2497 | |
2498 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ | |
2499 | ||
2500 | s = bfd_make_section (abfd, ".plt"); | |
2501 | if (s == NULL | |
2502 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2503 | | SEC_HAS_CONTENTS | |
2504 | | SEC_IN_MEMORY | |
2505 | | SEC_LINKER_CREATED | |
2506 | | SEC_CODE)) | |
2507 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2508 | return FALSE; |
252b5132 RH |
2509 | |
2510 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
2511 | .plt section. */ | |
14a793b2 | 2512 | bh = NULL; |
252b5132 RH |
2513 | if (! (_bfd_generic_link_add_one_symbol |
2514 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
b34976b6 | 2515 | (bfd_vma) 0, (const char *) NULL, FALSE, |
14a793b2 | 2516 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 2517 | return FALSE; |
14a793b2 | 2518 | h = (struct elf_link_hash_entry *) bh; |
252b5132 RH |
2519 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
2520 | h->type = STT_OBJECT; | |
2521 | ||
2522 | if (info->shared | |
2523 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 2524 | return FALSE; |
252b5132 RH |
2525 | |
2526 | s = bfd_make_section (abfd, ".rela.plt"); | |
2527 | if (s == NULL | |
2528 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2529 | | SEC_HAS_CONTENTS | |
2530 | | SEC_IN_MEMORY | |
2531 | | SEC_LINKER_CREATED | |
2532 | | SEC_READONLY)) | |
2533 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2534 | return FALSE; |
252b5132 RH |
2535 | |
2536 | /* We may or may not have created a .got section for this object, but | |
2537 | we definitely havn't done the rest of the work. */ | |
2538 | ||
2539 | if (!elf64_alpha_create_got_section (abfd, info)) | |
b34976b6 | 2540 | return FALSE; |
252b5132 RH |
2541 | |
2542 | s = bfd_make_section(abfd, ".rela.got"); | |
2543 | if (s == NULL | |
2544 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2545 | | SEC_HAS_CONTENTS | |
2546 | | SEC_IN_MEMORY | |
2547 | | SEC_LINKER_CREATED | |
2548 | | SEC_READONLY)) | |
2549 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2550 | return FALSE; |
252b5132 RH |
2551 | |
2552 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the | |
2553 | dynobj's .got section. We don't do this in the linker script | |
2554 | because we don't want to define the symbol if we are not creating | |
2555 | a global offset table. */ | |
14a793b2 | 2556 | bh = NULL; |
252b5132 RH |
2557 | if (!(_bfd_generic_link_add_one_symbol |
2558 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
2559 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
b34976b6 AM |
2560 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
2561 | return FALSE; | |
14a793b2 | 2562 | h = (struct elf_link_hash_entry *) bh; |
252b5132 RH |
2563 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
2564 | h->type = STT_OBJECT; | |
2565 | ||
2566 | if (info->shared | |
2567 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 2568 | return FALSE; |
252b5132 RH |
2569 | |
2570 | elf_hash_table (info)->hgot = h; | |
2571 | ||
b34976b6 | 2572 | return TRUE; |
252b5132 RH |
2573 | } |
2574 | \f | |
2575 | /* Read ECOFF debugging information from a .mdebug section into a | |
2576 | ecoff_debug_info structure. */ | |
2577 | ||
b34976b6 | 2578 | static bfd_boolean |
252b5132 RH |
2579 | elf64_alpha_read_ecoff_info (abfd, section, debug) |
2580 | bfd *abfd; | |
2581 | asection *section; | |
2582 | struct ecoff_debug_info *debug; | |
2583 | { | |
2584 | HDRR *symhdr; | |
2585 | const struct ecoff_debug_swap *swap; | |
2586 | char *ext_hdr = NULL; | |
2587 | ||
2588 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
fe8bc63d | 2589 | memset (debug, 0, sizeof (*debug)); |
252b5132 | 2590 | |
dc810e39 | 2591 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
252b5132 RH |
2592 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
2593 | goto error_return; | |
2594 | ||
82e51918 AM |
2595 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
2596 | swap->external_hdr_size)) | |
252b5132 RH |
2597 | goto error_return; |
2598 | ||
2599 | symhdr = &debug->symbolic_header; | |
2600 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
2601 | ||
2602 | /* The symbolic header contains absolute file offsets and sizes to | |
2603 | read. */ | |
2604 | #define READ(ptr, offset, count, size, type) \ | |
2605 | if (symhdr->count == 0) \ | |
2606 | debug->ptr = NULL; \ | |
2607 | else \ | |
2608 | { \ | |
dc810e39 AM |
2609 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ |
2610 | debug->ptr = (type) bfd_malloc (amt); \ | |
252b5132 RH |
2611 | if (debug->ptr == NULL) \ |
2612 | goto error_return; \ | |
2613 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
dc810e39 | 2614 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
252b5132 RH |
2615 | goto error_return; \ |
2616 | } | |
2617 | ||
2618 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
2619 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
2620 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
2621 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
2622 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
2623 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
2624 | union aux_ext *); | |
2625 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
2626 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
2627 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
2628 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
2629 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
2630 | #undef READ | |
2631 | ||
2632 | debug->fdr = NULL; | |
2633 | debug->adjust = NULL; | |
2634 | ||
b34976b6 | 2635 | return TRUE; |
252b5132 RH |
2636 | |
2637 | error_return: | |
2638 | if (ext_hdr != NULL) | |
2639 | free (ext_hdr); | |
2640 | if (debug->line != NULL) | |
2641 | free (debug->line); | |
2642 | if (debug->external_dnr != NULL) | |
2643 | free (debug->external_dnr); | |
2644 | if (debug->external_pdr != NULL) | |
2645 | free (debug->external_pdr); | |
2646 | if (debug->external_sym != NULL) | |
2647 | free (debug->external_sym); | |
2648 | if (debug->external_opt != NULL) | |
2649 | free (debug->external_opt); | |
2650 | if (debug->external_aux != NULL) | |
2651 | free (debug->external_aux); | |
2652 | if (debug->ss != NULL) | |
2653 | free (debug->ss); | |
2654 | if (debug->ssext != NULL) | |
2655 | free (debug->ssext); | |
2656 | if (debug->external_fdr != NULL) | |
2657 | free (debug->external_fdr); | |
2658 | if (debug->external_rfd != NULL) | |
2659 | free (debug->external_rfd); | |
2660 | if (debug->external_ext != NULL) | |
2661 | free (debug->external_ext); | |
b34976b6 | 2662 | return FALSE; |
252b5132 RH |
2663 | } |
2664 | ||
2665 | /* Alpha ELF local labels start with '$'. */ | |
2666 | ||
b34976b6 | 2667 | static bfd_boolean |
252b5132 | 2668 | elf64_alpha_is_local_label_name (abfd, name) |
56fc028e | 2669 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2670 | const char *name; |
2671 | { | |
2672 | return name[0] == '$'; | |
2673 | } | |
2674 | ||
2675 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line | |
2676 | routine in order to handle the ECOFF debugging information. We | |
2677 | still call this mips_elf_find_line because of the slot | |
2678 | find_line_info in elf_obj_tdata is declared that way. */ | |
2679 | ||
2680 | struct mips_elf_find_line | |
2681 | { | |
2682 | struct ecoff_debug_info d; | |
2683 | struct ecoff_find_line i; | |
2684 | }; | |
2685 | ||
b34976b6 | 2686 | static bfd_boolean |
252b5132 RH |
2687 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, |
2688 | functionname_ptr, line_ptr) | |
2689 | bfd *abfd; | |
2690 | asection *section; | |
2691 | asymbol **symbols; | |
2692 | bfd_vma offset; | |
2693 | const char **filename_ptr; | |
2694 | const char **functionname_ptr; | |
2695 | unsigned int *line_ptr; | |
2696 | { | |
2697 | asection *msec; | |
2698 | ||
95404643 RH |
2699 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
2700 | filename_ptr, functionname_ptr, | |
2701 | line_ptr, 0, | |
2702 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 2703 | return TRUE; |
95404643 | 2704 | |
252b5132 RH |
2705 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
2706 | if (msec != NULL) | |
2707 | { | |
2708 | flagword origflags; | |
2709 | struct mips_elf_find_line *fi; | |
2710 | const struct ecoff_debug_swap * const swap = | |
2711 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
2712 | ||
2713 | /* If we are called during a link, alpha_elf_final_link may have | |
2714 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
2715 | if appropriate (which it normally will be). */ | |
2716 | origflags = msec->flags; | |
2717 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
2718 | msec->flags |= SEC_HAS_CONTENTS; | |
2719 | ||
2720 | fi = elf_tdata (abfd)->find_line_info; | |
2721 | if (fi == NULL) | |
2722 | { | |
2723 | bfd_size_type external_fdr_size; | |
2724 | char *fraw_src; | |
2725 | char *fraw_end; | |
2726 | struct fdr *fdr_ptr; | |
dc810e39 | 2727 | bfd_size_type amt = sizeof (struct mips_elf_find_line); |
252b5132 | 2728 | |
dc810e39 | 2729 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
252b5132 RH |
2730 | if (fi == NULL) |
2731 | { | |
2732 | msec->flags = origflags; | |
b34976b6 | 2733 | return FALSE; |
252b5132 RH |
2734 | } |
2735 | ||
2736 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) | |
2737 | { | |
2738 | msec->flags = origflags; | |
b34976b6 | 2739 | return FALSE; |
252b5132 RH |
2740 | } |
2741 | ||
2742 | /* Swap in the FDR information. */ | |
dc810e39 AM |
2743 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); |
2744 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
252b5132 RH |
2745 | if (fi->d.fdr == NULL) |
2746 | { | |
2747 | msec->flags = origflags; | |
b34976b6 | 2748 | return FALSE; |
252b5132 RH |
2749 | } |
2750 | external_fdr_size = swap->external_fdr_size; | |
2751 | fdr_ptr = fi->d.fdr; | |
2752 | fraw_src = (char *) fi->d.external_fdr; | |
2753 | fraw_end = (fraw_src | |
2754 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
2755 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2756 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
2757 | ||
2758 | elf_tdata (abfd)->find_line_info = fi; | |
2759 | ||
2760 | /* Note that we don't bother to ever free this information. | |
2761 | find_nearest_line is either called all the time, as in | |
2762 | objdump -l, so the information should be saved, or it is | |
2763 | rarely called, as in ld error messages, so the memory | |
2764 | wasted is unimportant. Still, it would probably be a | |
2765 | good idea for free_cached_info to throw it away. */ | |
2766 | } | |
2767 | ||
2768 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
2769 | &fi->i, filename_ptr, functionname_ptr, | |
2770 | line_ptr)) | |
2771 | { | |
2772 | msec->flags = origflags; | |
b34976b6 | 2773 | return TRUE; |
252b5132 RH |
2774 | } |
2775 | ||
2776 | msec->flags = origflags; | |
2777 | } | |
2778 | ||
2779 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
2780 | ||
2781 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
2782 | filename_ptr, functionname_ptr, | |
2783 | line_ptr); | |
2784 | } | |
2785 | \f | |
2786 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
2787 | ||
2788 | struct extsym_info | |
2789 | { | |
2790 | bfd *abfd; | |
2791 | struct bfd_link_info *info; | |
2792 | struct ecoff_debug_info *debug; | |
2793 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 2794 | bfd_boolean failed; |
252b5132 RH |
2795 | }; |
2796 | ||
b34976b6 | 2797 | static bfd_boolean |
252b5132 RH |
2798 | elf64_alpha_output_extsym (h, data) |
2799 | struct alpha_elf_link_hash_entry *h; | |
2800 | PTR data; | |
2801 | { | |
2802 | struct extsym_info *einfo = (struct extsym_info *) data; | |
b34976b6 | 2803 | bfd_boolean strip; |
252b5132 RH |
2804 | asection *sec, *output_section; |
2805 | ||
e92d460e AM |
2806 | if (h->root.root.type == bfd_link_hash_warning) |
2807 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2808 | ||
252b5132 | 2809 | if (h->root.indx == -2) |
b34976b6 | 2810 | strip = FALSE; |
252b5132 | 2811 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
e92d460e AM |
2812 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) |
2813 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
2814 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
b34976b6 | 2815 | strip = TRUE; |
252b5132 | 2816 | else if (einfo->info->strip == strip_all |
e92d460e AM |
2817 | || (einfo->info->strip == strip_some |
2818 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2819 | h->root.root.root.string, | |
b34976b6 AM |
2820 | FALSE, FALSE) == NULL)) |
2821 | strip = TRUE; | |
252b5132 | 2822 | else |
b34976b6 | 2823 | strip = FALSE; |
252b5132 RH |
2824 | |
2825 | if (strip) | |
b34976b6 | 2826 | return TRUE; |
252b5132 RH |
2827 | |
2828 | if (h->esym.ifd == -2) | |
2829 | { | |
2830 | h->esym.jmptbl = 0; | |
2831 | h->esym.cobol_main = 0; | |
2832 | h->esym.weakext = 0; | |
2833 | h->esym.reserved = 0; | |
2834 | h->esym.ifd = ifdNil; | |
2835 | h->esym.asym.value = 0; | |
2836 | h->esym.asym.st = stGlobal; | |
2837 | ||
2838 | if (h->root.root.type != bfd_link_hash_defined | |
e92d460e AM |
2839 | && h->root.root.type != bfd_link_hash_defweak) |
2840 | h->esym.asym.sc = scAbs; | |
252b5132 | 2841 | else |
e92d460e AM |
2842 | { |
2843 | const char *name; | |
2844 | ||
2845 | sec = h->root.root.u.def.section; | |
2846 | output_section = sec->output_section; | |
2847 | ||
2848 | /* When making a shared library and symbol h is the one from | |
2849 | the another shared library, OUTPUT_SECTION may be null. */ | |
2850 | if (output_section == NULL) | |
2851 | h->esym.asym.sc = scUndefined; | |
2852 | else | |
2853 | { | |
2854 | name = bfd_section_name (output_section->owner, output_section); | |
2855 | ||
2856 | if (strcmp (name, ".text") == 0) | |
2857 | h->esym.asym.sc = scText; | |
2858 | else if (strcmp (name, ".data") == 0) | |
2859 | h->esym.asym.sc = scData; | |
2860 | else if (strcmp (name, ".sdata") == 0) | |
2861 | h->esym.asym.sc = scSData; | |
2862 | else if (strcmp (name, ".rodata") == 0 | |
2863 | || strcmp (name, ".rdata") == 0) | |
2864 | h->esym.asym.sc = scRData; | |
2865 | else if (strcmp (name, ".bss") == 0) | |
2866 | h->esym.asym.sc = scBss; | |
2867 | else if (strcmp (name, ".sbss") == 0) | |
2868 | h->esym.asym.sc = scSBss; | |
2869 | else if (strcmp (name, ".init") == 0) | |
2870 | h->esym.asym.sc = scInit; | |
2871 | else if (strcmp (name, ".fini") == 0) | |
2872 | h->esym.asym.sc = scFini; | |
2873 | else | |
2874 | h->esym.asym.sc = scAbs; | |
2875 | } | |
2876 | } | |
252b5132 RH |
2877 | |
2878 | h->esym.asym.reserved = 0; | |
2879 | h->esym.asym.index = indexNil; | |
2880 | } | |
2881 | ||
2882 | if (h->root.root.type == bfd_link_hash_common) | |
2883 | h->esym.asym.value = h->root.root.u.c.size; | |
2884 | else if (h->root.root.type == bfd_link_hash_defined | |
2885 | || h->root.root.type == bfd_link_hash_defweak) | |
2886 | { | |
2887 | if (h->esym.asym.sc == scCommon) | |
e92d460e | 2888 | h->esym.asym.sc = scBss; |
252b5132 | 2889 | else if (h->esym.asym.sc == scSCommon) |
e92d460e | 2890 | h->esym.asym.sc = scSBss; |
252b5132 RH |
2891 | |
2892 | sec = h->root.root.u.def.section; | |
2893 | output_section = sec->output_section; | |
2894 | if (output_section != NULL) | |
e92d460e AM |
2895 | h->esym.asym.value = (h->root.root.u.def.value |
2896 | + sec->output_offset | |
2897 | + output_section->vma); | |
252b5132 | 2898 | else |
e92d460e | 2899 | h->esym.asym.value = 0; |
252b5132 RH |
2900 | } |
2901 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
2902 | { | |
2903 | /* Set type and value for a symbol with a function stub. */ | |
2904 | h->esym.asym.st = stProc; | |
2905 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); | |
2906 | if (sec == NULL) | |
2907 | h->esym.asym.value = 0; | |
2908 | else | |
2909 | { | |
2910 | output_section = sec->output_section; | |
2911 | if (output_section != NULL) | |
2912 | h->esym.asym.value = (h->root.plt.offset | |
2913 | + sec->output_offset | |
2914 | + output_section->vma); | |
2915 | else | |
2916 | h->esym.asym.value = 0; | |
2917 | } | |
252b5132 RH |
2918 | } |
2919 | ||
2920 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
e92d460e AM |
2921 | h->root.root.root.string, |
2922 | &h->esym)) | |
252b5132 | 2923 | { |
b34976b6 AM |
2924 | einfo->failed = TRUE; |
2925 | return FALSE; | |
252b5132 RH |
2926 | } |
2927 | ||
b34976b6 | 2928 | return TRUE; |
252b5132 | 2929 | } |
252b5132 | 2930 | \f |
3765b1be RH |
2931 | /* Search for and possibly create a got entry. */ |
2932 | ||
2933 | static struct alpha_elf_got_entry * | |
2934 | get_got_entry (abfd, h, r_type, r_symndx, r_addend) | |
2935 | bfd *abfd; | |
2936 | struct alpha_elf_link_hash_entry *h; | |
2937 | unsigned long r_type, r_symndx; | |
2938 | bfd_vma r_addend; | |
2939 | { | |
2940 | struct alpha_elf_got_entry *gotent; | |
2941 | struct alpha_elf_got_entry **slot; | |
2942 | ||
2943 | if (h) | |
2944 | slot = &h->got_entries; | |
2945 | else | |
2946 | { | |
2947 | /* This is a local .got entry -- record for merge. */ | |
2948 | ||
2949 | struct alpha_elf_got_entry **local_got_entries; | |
2950 | ||
2951 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2952 | if (!local_got_entries) | |
2953 | { | |
2954 | bfd_size_type size; | |
2955 | Elf_Internal_Shdr *symtab_hdr; | |
2956 | ||
2957 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
2958 | size = symtab_hdr->sh_info; | |
2959 | size *= sizeof (struct alpha_elf_got_entry *); | |
2960 | ||
2961 | local_got_entries | |
9bab7074 | 2962 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); |
3765b1be RH |
2963 | if (!local_got_entries) |
2964 | return NULL; | |
2965 | ||
3765b1be RH |
2966 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; |
2967 | } | |
2968 | ||
2969 | slot = &local_got_entries[r_symndx]; | |
2970 | } | |
2971 | ||
2972 | for (gotent = *slot; gotent ; gotent = gotent->next) | |
2973 | if (gotent->gotobj == abfd | |
2974 | && gotent->reloc_type == r_type | |
2975 | && gotent->addend == r_addend) | |
2976 | break; | |
2977 | ||
2978 | if (!gotent) | |
2979 | { | |
2980 | int entry_size; | |
2981 | bfd_size_type amt; | |
2982 | ||
2983 | amt = sizeof (struct alpha_elf_got_entry); | |
2984 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
2985 | if (!gotent) | |
2986 | return NULL; | |
2987 | ||
2988 | gotent->gotobj = abfd; | |
2989 | gotent->addend = r_addend; | |
2990 | gotent->got_offset = -1; | |
2991 | gotent->use_count = 1; | |
2992 | gotent->reloc_type = r_type; | |
2993 | gotent->reloc_done = 0; | |
2994 | gotent->reloc_xlated = 0; | |
2995 | ||
2996 | gotent->next = *slot; | |
2997 | *slot = gotent; | |
2998 | ||
2999 | entry_size = alpha_got_entry_size (r_type); | |
3000 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
3001 | if (!h) | |
3002 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
3003 | } | |
3004 | else | |
3005 | gotent->use_count += 1; | |
3006 | ||
3007 | return gotent; | |
3008 | } | |
3009 | ||
252b5132 RH |
3010 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
3011 | ||
b34976b6 | 3012 | static bfd_boolean |
252b5132 RH |
3013 | elf64_alpha_check_relocs (abfd, info, sec, relocs) |
3014 | bfd *abfd; | |
3015 | struct bfd_link_info *info; | |
3016 | asection *sec; | |
3017 | const Elf_Internal_Rela *relocs; | |
3018 | { | |
3019 | bfd *dynobj; | |
3020 | asection *sreloc; | |
3021 | const char *rel_sec_name; | |
3022 | Elf_Internal_Shdr *symtab_hdr; | |
3023 | struct alpha_elf_link_hash_entry **sym_hashes; | |
252b5132 | 3024 | const Elf_Internal_Rela *rel, *relend; |
b34976b6 | 3025 | bfd_boolean got_created; |
dc810e39 | 3026 | bfd_size_type amt; |
252b5132 | 3027 | |
1049f94e | 3028 | if (info->relocatable) |
b34976b6 | 3029 | return TRUE; |
252b5132 RH |
3030 | |
3031 | dynobj = elf_hash_table(info)->dynobj; | |
3032 | if (dynobj == NULL) | |
3033 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
3034 | ||
3035 | sreloc = NULL; | |
3036 | rel_sec_name = NULL; | |
3037 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
3038 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
b34976b6 | 3039 | got_created = FALSE; |
252b5132 RH |
3040 | |
3041 | relend = relocs + sec->reloc_count; | |
3042 | for (rel = relocs; rel < relend; ++rel) | |
3043 | { | |
3765b1be RH |
3044 | enum { |
3045 | NEED_GOT = 1, | |
3046 | NEED_GOT_ENTRY = 2, | |
3047 | NEED_DYNREL = 4 | |
3048 | }; | |
3049 | ||
252b5132 RH |
3050 | unsigned long r_symndx, r_type; |
3051 | struct alpha_elf_link_hash_entry *h; | |
3765b1be | 3052 | unsigned int gotent_flags; |
b34976b6 | 3053 | bfd_boolean maybe_dynamic; |
3765b1be RH |
3054 | unsigned int need; |
3055 | bfd_vma addend; | |
252b5132 RH |
3056 | |
3057 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3058 | if (r_symndx < symtab_hdr->sh_info) | |
3059 | h = NULL; | |
3060 | else | |
3061 | { | |
3062 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3063 | ||
3064 | while (h->root.root.type == bfd_link_hash_indirect | |
3065 | || h->root.root.type == bfd_link_hash_warning) | |
3066 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3067 | ||
3068 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; | |
3069 | } | |
3765b1be RH |
3070 | |
3071 | /* We can only get preliminary data on whether a symbol is | |
3072 | locally or externally defined, as not all of the input files | |
3073 | have yet been processed. Do something with what we know, as | |
3074 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 3075 | maybe_dynamic = FALSE; |
3765b1be RH |
3076 | if (h && ((info->shared |
3077 | && (!info->symbolic || info->allow_shlib_undefined)) | |
3078 | || ! (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
c853d7f6 | 3079 | || h->root.root.type == bfd_link_hash_defweak)) |
b34976b6 | 3080 | maybe_dynamic = TRUE; |
3765b1be RH |
3081 | |
3082 | need = 0; | |
3083 | gotent_flags = 0; | |
252b5132 | 3084 | r_type = ELF64_R_TYPE (rel->r_info); |
3765b1be | 3085 | addend = rel->r_addend; |
252b5132 RH |
3086 | |
3087 | switch (r_type) | |
3088 | { | |
3089 | case R_ALPHA_LITERAL: | |
3765b1be RH |
3090 | need = NEED_GOT | NEED_GOT_ENTRY; |
3091 | ||
3092 | /* Remember how this literal is used from its LITUSEs. | |
3093 | This will be important when it comes to decide if we can | |
3094 | create a .plt entry for a function symbol. */ | |
3095 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
3096 | if (rel->r_addend >= 1 && rel->r_addend <= 5) | |
3097 | gotent_flags |= 1 << rel->r_addend; | |
3098 | --rel; | |
3099 | ||
3100 | /* No LITUSEs -- presumably the address is used somehow. */ | |
3101 | if (gotent_flags == 0) | |
3102 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
3103 | break; | |
252b5132 RH |
3104 | |
3105 | case R_ALPHA_GPDISP: | |
dfe57ca0 | 3106 | case R_ALPHA_GPREL16: |
252b5132 RH |
3107 | case R_ALPHA_GPREL32: |
3108 | case R_ALPHA_GPRELHIGH: | |
3109 | case R_ALPHA_GPRELLOW: | |
7793f4d0 | 3110 | case R_ALPHA_BRSGP: |
3765b1be RH |
3111 | need = NEED_GOT; |
3112 | break; | |
3113 | ||
3114 | case R_ALPHA_REFLONG: | |
3115 | case R_ALPHA_REFQUAD: | |
475c2a7e | 3116 | if ((info->shared && (sec->flags & SEC_ALLOC)) || maybe_dynamic) |
3765b1be RH |
3117 | need = NEED_DYNREL; |
3118 | break; | |
3119 | ||
3765b1be | 3120 | case R_ALPHA_TLSLDM: |
cc03ec80 RH |
3121 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
3122 | reloc to the 0 symbol so that they all match. */ | |
3123 | r_symndx = 0; | |
3124 | h = 0; | |
3125 | maybe_dynamic = FALSE; | |
3126 | /* FALLTHRU */ | |
3127 | ||
3128 | case R_ALPHA_TLSGD: | |
3765b1be RH |
3129 | case R_ALPHA_GOTDTPREL: |
3130 | need = NEED_GOT | NEED_GOT_ENTRY; | |
3131 | break; | |
3132 | ||
3133 | case R_ALPHA_GOTTPREL: | |
3134 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 3135 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; |
3765b1be RH |
3136 | if (info->shared) |
3137 | info->flags |= DF_STATIC_TLS; | |
3138 | break; | |
3139 | ||
3140 | case R_ALPHA_TPREL64: | |
3141 | if (info->shared || maybe_dynamic) | |
3142 | need = NEED_DYNREL; | |
3143 | if (info->shared) | |
3144 | info->flags |= DF_STATIC_TLS; | |
3145 | break; | |
3146 | } | |
3147 | ||
3148 | if (need & NEED_GOT) | |
3149 | { | |
252b5132 RH |
3150 | if (!got_created) |
3151 | { | |
3152 | if (!elf64_alpha_create_got_section (abfd, info)) | |
b34976b6 | 3153 | return FALSE; |
252b5132 RH |
3154 | |
3155 | /* Make sure the object's gotobj is set to itself so | |
3156 | that we default to every object with its own .got. | |
3157 | We'll merge .gots later once we've collected each | |
3158 | object's info. */ | |
3159 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
3160 | ||
3161 | got_created = 1; | |
3162 | } | |
3765b1be | 3163 | } |
252b5132 | 3164 | |
3765b1be RH |
3165 | if (need & NEED_GOT_ENTRY) |
3166 | { | |
3167 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 3168 | |
3765b1be RH |
3169 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
3170 | if (!gotent) | |
b34976b6 | 3171 | return FALSE; |
3765b1be RH |
3172 | |
3173 | if (gotent_flags) | |
3174 | { | |
3175 | gotent->flags |= gotent_flags; | |
3176 | if (h) | |
3177 | { | |
3178 | gotent_flags |= h->flags; | |
3179 | h->flags = gotent_flags; | |
3180 | ||
3181 | /* Make a guess as to whether a .plt entry is needed. */ | |
3182 | if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
3183 | && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
3184 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3185 | else | |
3186 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3187 | } | |
3188 | } | |
3189 | } | |
3190 | ||
3191 | if (need & NEED_DYNREL) | |
3192 | { | |
252b5132 RH |
3193 | if (rel_sec_name == NULL) |
3194 | { | |
3195 | rel_sec_name = (bfd_elf_string_from_elf_section | |
3196 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
3197 | elf_section_data(sec)->rel_hdr.sh_name)); | |
3198 | if (rel_sec_name == NULL) | |
b34976b6 | 3199 | return FALSE; |
252b5132 RH |
3200 | |
3201 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
3202 | && strcmp (bfd_get_section_name (abfd, sec), | |
3203 | rel_sec_name+5) == 0); | |
3204 | } | |
3205 | ||
3206 | /* We need to create the section here now whether we eventually | |
3207 | use it or not so that it gets mapped to an output section by | |
3208 | the linker. If not used, we'll kill it in | |
3209 | size_dynamic_sections. */ | |
3210 | if (sreloc == NULL) | |
3211 | { | |
3212 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); | |
3213 | if (sreloc == NULL) | |
3214 | { | |
dc810e39 AM |
3215 | flagword flags; |
3216 | ||
252b5132 | 3217 | sreloc = bfd_make_section (dynobj, rel_sec_name); |
dc810e39 AM |
3218 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY |
3219 | | SEC_LINKER_CREATED | SEC_READONLY); | |
3220 | if (sec->flags & SEC_ALLOC) | |
3221 | flags |= SEC_ALLOC | SEC_LOAD; | |
252b5132 | 3222 | if (sreloc == NULL |
dc810e39 | 3223 | || !bfd_set_section_flags (dynobj, sreloc, flags) |
252b5132 | 3224 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 3225 | return FALSE; |
252b5132 RH |
3226 | } |
3227 | } | |
3228 | ||
3229 | if (h) | |
3230 | { | |
3231 | /* Since we havn't seen all of the input symbols yet, we | |
3232 | don't know whether we'll actually need a dynamic relocation | |
3233 | entry for this reloc. So make a record of it. Once we | |
3234 | find out if this thing needs dynamic relocation we'll | |
fe8bc63d | 3235 | expand the relocation sections by the appropriate amount. */ |
252b5132 RH |
3236 | |
3237 | struct alpha_elf_reloc_entry *rent; | |
3238 | ||
3239 | for (rent = h->reloc_entries; rent; rent = rent->next) | |
3240 | if (rent->rtype == r_type && rent->srel == sreloc) | |
3241 | break; | |
3242 | ||
3243 | if (!rent) | |
3244 | { | |
dc810e39 AM |
3245 | amt = sizeof (struct alpha_elf_reloc_entry); |
3246 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
252b5132 | 3247 | if (!rent) |
b34976b6 | 3248 | return FALSE; |
252b5132 RH |
3249 | |
3250 | rent->srel = sreloc; | |
3251 | rent->rtype = r_type; | |
3252 | rent->count = 1; | |
73896efb RH |
3253 | rent->reltext = ((sec->flags & (SEC_READONLY | SEC_ALLOC)) |
3254 | == (SEC_READONLY | SEC_ALLOC)); | |
252b5132 RH |
3255 | |
3256 | rent->next = h->reloc_entries; | |
3257 | h->reloc_entries = rent; | |
3258 | } | |
3259 | else | |
3260 | rent->count++; | |
3261 | } | |
c853d7f6 | 3262 | else if (info->shared) |
252b5132 | 3263 | { |
c555c5c5 AM |
3264 | /* If this is a shared library, and the section is to be |
3265 | loaded into memory, we need a RELATIVE reloc. */ | |
252b5132 | 3266 | sreloc->_raw_size += sizeof (Elf64_External_Rela); |
c853d7f6 RH |
3267 | if ((sec->flags & (SEC_READONLY | SEC_ALLOC)) |
3268 | == (SEC_READONLY | SEC_ALLOC)) | |
fcfbdf31 | 3269 | info->flags |= DF_TEXTREL; |
252b5132 | 3270 | } |
252b5132 RH |
3271 | } |
3272 | } | |
3273 | ||
b34976b6 | 3274 | return TRUE; |
252b5132 RH |
3275 | } |
3276 | ||
3277 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3278 | regular object. The current definition is in some section of the | |
3279 | dynamic object, but we're not including those sections. We have to | |
3280 | change the definition to something the rest of the link can | |
3281 | understand. */ | |
3282 | ||
b34976b6 | 3283 | static bfd_boolean |
252b5132 RH |
3284 | elf64_alpha_adjust_dynamic_symbol (info, h) |
3285 | struct bfd_link_info *info; | |
3286 | struct elf_link_hash_entry *h; | |
3287 | { | |
3288 | bfd *dynobj; | |
3289 | asection *s; | |
3290 | struct alpha_elf_link_hash_entry *ah; | |
3291 | ||
3292 | dynobj = elf_hash_table(info)->dynobj; | |
3293 | ah = (struct alpha_elf_link_hash_entry *)h; | |
3294 | ||
3295 | /* Now that we've seen all of the input symbols, finalize our decision | |
3296 | about whether this symbol should get a .plt entry. */ | |
3297 | ||
8ba89f17 | 3298 | if (alpha_elf_dynamic_symbol_p (h, info) |
252b5132 RH |
3299 | && ((h->type == STT_FUNC |
3300 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
3301 | || (h->type == STT_NOTYPE | |
3765b1be RH |
3302 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC) |
3303 | && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))) | |
252b5132 RH |
3304 | /* Don't prevent otherwise valid programs from linking by attempting |
3305 | to create a new .got entry somewhere. A Correct Solution would be | |
3306 | to add a new .got section to a new object file and let it be merged | |
3307 | somewhere later. But for now don't bother. */ | |
3308 | && ah->got_entries) | |
3309 | { | |
3310 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3311 | ||
3312 | s = bfd_get_section_by_name(dynobj, ".plt"); | |
3313 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 3314 | return FALSE; |
252b5132 RH |
3315 | |
3316 | /* The first bit of the .plt is reserved. */ | |
3317 | if (s->_raw_size == 0) | |
3318 | s->_raw_size = PLT_HEADER_SIZE; | |
3319 | ||
3320 | h->plt.offset = s->_raw_size; | |
3321 | s->_raw_size += PLT_ENTRY_SIZE; | |
3322 | ||
3323 | /* If this symbol is not defined in a regular file, and we are not | |
3324 | generating a shared library, then set the symbol to the location | |
3325 | in the .plt. This is required to make function pointers compare | |
3326 | equal between the normal executable and the shared library. */ | |
3327 | if (! info->shared | |
3328 | && h->root.type != bfd_link_hash_defweak) | |
3329 | { | |
cc03ec80 RH |
3330 | ah->plt_old_section = h->root.u.def.section; |
3331 | ah->plt_old_value = h->root.u.def.value; | |
3332 | ah->flags |= ALPHA_ELF_LINK_HASH_PLT_LOC; | |
252b5132 RH |
3333 | h->root.u.def.section = s; |
3334 | h->root.u.def.value = h->plt.offset; | |
3335 | } | |
3336 | ||
3337 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ | |
3338 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3339 | BFD_ASSERT (s != NULL); | |
3340 | s->_raw_size += sizeof (Elf64_External_Rela); | |
3341 | ||
b34976b6 | 3342 | return TRUE; |
252b5132 RH |
3343 | } |
3344 | else | |
3345 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3346 | ||
3347 | /* If this is a weak symbol, and there is a real definition, the | |
3348 | processor independent code will have arranged for us to see the | |
3349 | real definition first, and we can just use the same value. */ | |
3350 | if (h->weakdef != NULL) | |
3351 | { | |
3352 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
3353 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
3354 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
3355 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 3356 | return TRUE; |
252b5132 RH |
3357 | } |
3358 | ||
3359 | /* This is a reference to a symbol defined by a dynamic object which | |
3360 | is not a function. The Alpha, since it uses .got entries for all | |
3361 | symbols even in regular objects, does not need the hackery of a | |
3362 | .dynbss section and COPY dynamic relocations. */ | |
3363 | ||
b34976b6 | 3364 | return TRUE; |
252b5132 RH |
3365 | } |
3366 | ||
3367 | /* Symbol versioning can create new symbols, and make our old symbols | |
3368 | indirect to the new ones. Consolidate the got and reloc information | |
3369 | in these situations. */ | |
3370 | ||
b34976b6 | 3371 | static bfd_boolean |
252b5132 RH |
3372 | elf64_alpha_merge_ind_symbols (hi, dummy) |
3373 | struct alpha_elf_link_hash_entry *hi; | |
56fc028e | 3374 | PTR dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
3375 | { |
3376 | struct alpha_elf_link_hash_entry *hs; | |
3377 | ||
3378 | if (hi->root.root.type != bfd_link_hash_indirect) | |
b34976b6 | 3379 | return TRUE; |
252b5132 RH |
3380 | hs = hi; |
3381 | do { | |
3382 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
3383 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
3384 | ||
3385 | /* Merge the flags. Whee. */ | |
3386 | ||
3387 | hs->flags |= hi->flags; | |
3388 | ||
3389 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
3390 | doing so, since we don't need it anymore. */ | |
3391 | ||
3392 | if (hs->got_entries == NULL) | |
3393 | hs->got_entries = hi->got_entries; | |
3394 | else | |
3395 | { | |
3396 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
3397 | ||
3398 | gsh = hs->got_entries; | |
3399 | for (gi = hi->got_entries; gi ; gi = gin) | |
3400 | { | |
3401 | gin = gi->next; | |
3402 | for (gs = gsh; gs ; gs = gs->next) | |
3765b1be RH |
3403 | if (gi->gotobj == gs->gotobj |
3404 | && gi->reloc_type == gs->reloc_type | |
3405 | && gi->addend == gs->addend) | |
3406 | { | |
3407 | gi->use_count += gs->use_count; | |
3408 | goto got_found; | |
3409 | } | |
252b5132 RH |
3410 | gi->next = hs->got_entries; |
3411 | hs->got_entries = gi; | |
3412 | got_found:; | |
3413 | } | |
3414 | } | |
3415 | hi->got_entries = NULL; | |
3416 | ||
3417 | /* And similar for the reloc entries. */ | |
3418 | ||
3419 | if (hs->reloc_entries == NULL) | |
3420 | hs->reloc_entries = hi->reloc_entries; | |
3421 | else | |
3422 | { | |
3423 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
3424 | ||
3425 | rsh = hs->reloc_entries; | |
3426 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
3427 | { | |
3428 | rin = ri->next; | |
3429 | for (rs = rsh; rs ; rs = rs->next) | |
82988bff | 3430 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) |
252b5132 RH |
3431 | { |
3432 | rs->count += ri->count; | |
3433 | goto found_reloc; | |
3434 | } | |
3435 | ri->next = hs->reloc_entries; | |
3436 | hs->reloc_entries = ri; | |
3437 | found_reloc:; | |
3438 | } | |
3439 | } | |
3440 | hi->reloc_entries = NULL; | |
3441 | ||
b34976b6 | 3442 | return TRUE; |
252b5132 RH |
3443 | } |
3444 | ||
3445 | /* Is it possible to merge two object file's .got tables? */ | |
3446 | ||
b34976b6 | 3447 | static bfd_boolean |
252b5132 RH |
3448 | elf64_alpha_can_merge_gots (a, b) |
3449 | bfd *a, *b; | |
3450 | { | |
3765b1be | 3451 | int total = alpha_elf_tdata (a)->total_got_size; |
252b5132 RH |
3452 | bfd *bsub; |
3453 | ||
3454 | /* Trivial quick fallout test. */ | |
3765b1be | 3455 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) |
b34976b6 | 3456 | return TRUE; |
252b5132 RH |
3457 | |
3458 | /* By their nature, local .got entries cannot be merged. */ | |
3765b1be | 3459 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) |
b34976b6 | 3460 | return FALSE; |
252b5132 RH |
3461 | |
3462 | /* Failing the common trivial comparison, we must effectively | |
3463 | perform the merge. Not actually performing the merge means that | |
3464 | we don't have to store undo information in case we fail. */ | |
3465 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
3466 | { | |
3467 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
3468 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
3469 | int i, n; | |
3470 | ||
d9bc7a44 | 3471 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
3472 | for (i = 0; i < n; ++i) |
3473 | { | |
3474 | struct alpha_elf_got_entry *ae, *be; | |
3475 | struct alpha_elf_link_hash_entry *h; | |
3476 | ||
3477 | h = hashes[i]; | |
3478 | while (h->root.root.type == bfd_link_hash_indirect | |
3479 | || h->root.root.type == bfd_link_hash_warning) | |
3480 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3481 | ||
3482 | for (be = h->got_entries; be ; be = be->next) | |
3483 | { | |
3484 | if (be->use_count == 0) | |
3485 | continue; | |
3486 | if (be->gotobj != b) | |
3487 | continue; | |
3488 | ||
3489 | for (ae = h->got_entries; ae ; ae = ae->next) | |
3765b1be RH |
3490 | if (ae->gotobj == a |
3491 | && ae->reloc_type == be->reloc_type | |
3492 | && ae->addend == be->addend) | |
252b5132 RH |
3493 | goto global_found; |
3494 | ||
3765b1be RH |
3495 | total += alpha_got_entry_size (be->reloc_type); |
3496 | if (total > MAX_GOT_SIZE) | |
b34976b6 | 3497 | return FALSE; |
252b5132 RH |
3498 | global_found:; |
3499 | } | |
3500 | } | |
3501 | } | |
3502 | ||
b34976b6 | 3503 | return TRUE; |
252b5132 RH |
3504 | } |
3505 | ||
3506 | /* Actually merge two .got tables. */ | |
3507 | ||
3508 | static void | |
3509 | elf64_alpha_merge_gots (a, b) | |
3510 | bfd *a, *b; | |
3511 | { | |
3765b1be | 3512 | int total = alpha_elf_tdata (a)->total_got_size; |
252b5132 RH |
3513 | bfd *bsub; |
3514 | ||
3515 | /* Remember local expansion. */ | |
3516 | { | |
3765b1be | 3517 | int e = alpha_elf_tdata (b)->local_got_size; |
252b5132 | 3518 | total += e; |
3765b1be | 3519 | alpha_elf_tdata (a)->local_got_size += e; |
252b5132 RH |
3520 | } |
3521 | ||
3522 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
3523 | { | |
3524 | struct alpha_elf_got_entry **local_got_entries; | |
3525 | struct alpha_elf_link_hash_entry **hashes; | |
3526 | Elf_Internal_Shdr *symtab_hdr; | |
3527 | int i, n; | |
3528 | ||
3529 | /* Let the local .got entries know they are part of a new subsegment. */ | |
3530 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
3531 | if (local_got_entries) | |
3532 | { | |
3533 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
3534 | for (i = 0; i < n; ++i) | |
3535 | { | |
3536 | struct alpha_elf_got_entry *ent; | |
3537 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
3538 | ent->gotobj = a; | |
3539 | } | |
3540 | } | |
3541 | ||
3542 | /* Merge the global .got entries. */ | |
3543 | hashes = alpha_elf_sym_hashes (bsub); | |
3544 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
3545 | ||
d9bc7a44 | 3546 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
3547 | for (i = 0; i < n; ++i) |
3548 | { | |
3549 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
3550 | struct alpha_elf_link_hash_entry *h; | |
3551 | ||
3552 | h = hashes[i]; | |
3553 | while (h->root.root.type == bfd_link_hash_indirect | |
3554 | || h->root.root.type == bfd_link_hash_warning) | |
3555 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3556 | ||
3557 | start = &h->got_entries; | |
3558 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) | |
3559 | { | |
3560 | if (be->use_count == 0) | |
3561 | { | |
3562 | *pbe = be->next; | |
3563 | continue; | |
3564 | } | |
3565 | if (be->gotobj != b) | |
3566 | continue; | |
3567 | ||
3568 | for (ae = *start; ae ; ae = ae->next) | |
3765b1be RH |
3569 | if (ae->gotobj == a |
3570 | && ae->reloc_type == be->reloc_type | |
3571 | && ae->addend == be->addend) | |
252b5132 RH |
3572 | { |
3573 | ae->flags |= be->flags; | |
3574 | ae->use_count += be->use_count; | |
3575 | *pbe = be->next; | |
3576 | goto global_found; | |
3577 | } | |
3578 | be->gotobj = a; | |
3765b1be | 3579 | total += alpha_got_entry_size (be->reloc_type); |
252b5132 RH |
3580 | |
3581 | global_found:; | |
3582 | } | |
3583 | } | |
3584 | ||
3585 | alpha_elf_tdata (bsub)->gotobj = a; | |
3586 | } | |
3765b1be | 3587 | alpha_elf_tdata (a)->total_got_size = total; |
252b5132 RH |
3588 | |
3589 | /* Merge the two in_got chains. */ | |
3590 | { | |
3591 | bfd *next; | |
3592 | ||
3593 | bsub = a; | |
3594 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
3595 | bsub = next; | |
3596 | ||
3597 | alpha_elf_tdata (bsub)->in_got_link_next = b; | |
3598 | } | |
3599 | } | |
3600 | ||
3601 | /* Calculate the offsets for the got entries. */ | |
3602 | ||
b34976b6 | 3603 | static bfd_boolean |
252b5132 RH |
3604 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) |
3605 | struct alpha_elf_link_hash_entry *h; | |
52b9d213 | 3606 | PTR arg ATTRIBUTE_UNUSED; |
252b5132 RH |
3607 | { |
3608 | struct alpha_elf_got_entry *gotent; | |
3609 | ||
e92d460e AM |
3610 | if (h->root.root.type == bfd_link_hash_warning) |
3611 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3612 | ||
252b5132 RH |
3613 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
3614 | if (gotent->use_count > 0) | |
3615 | { | |
3616 | bfd_size_type *plge | |
3617 | = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; | |
3618 | ||
3619 | gotent->got_offset = *plge; | |
3765b1be | 3620 | *plge += alpha_got_entry_size (gotent->reloc_type); |
252b5132 RH |
3621 | } |
3622 | ||
b34976b6 | 3623 | return TRUE; |
252b5132 RH |
3624 | } |
3625 | ||
3626 | static void | |
3627 | elf64_alpha_calc_got_offsets (info) | |
3628 | struct bfd_link_info *info; | |
3629 | { | |
3630 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
3631 | ||
3632 | /* First, zero out the .got sizes, as we may be recalculating the | |
3633 | .got after optimizing it. */ | |
3634 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3635 | alpha_elf_tdata(i)->got->_raw_size = 0; | |
3636 | ||
3637 | /* Next, fill in the offsets for all the global entries. */ | |
3638 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3639 | elf64_alpha_calc_got_offsets_for_symbol, | |
3640 | NULL); | |
3641 | ||
3642 | /* Finally, fill in the offsets for the local entries. */ | |
3643 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3644 | { | |
3645 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; | |
3646 | bfd *j; | |
3647 | ||
3648 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
3649 | { | |
3650 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
3651 | int k, n; | |
3652 | ||
3653 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
3654 | if (!local_got_entries) | |
3655 | continue; | |
3656 | ||
3657 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
3658 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
3659 | if (gotent->use_count > 0) | |
3660 | { | |
3661 | gotent->got_offset = got_offset; | |
3765b1be | 3662 | got_offset += alpha_got_entry_size (gotent->reloc_type); |
252b5132 RH |
3663 | } |
3664 | } | |
3665 | ||
3666 | alpha_elf_tdata(i)->got->_raw_size = got_offset; | |
3667 | alpha_elf_tdata(i)->got->_cooked_size = got_offset; | |
3668 | } | |
3669 | } | |
3670 | ||
3671 | /* Constructs the gots. */ | |
3672 | ||
b34976b6 | 3673 | static bfd_boolean |
f44f99a5 | 3674 | elf64_alpha_size_got_sections (info) |
252b5132 RH |
3675 | struct bfd_link_info *info; |
3676 | { | |
52b9d213 | 3677 | bfd *i, *got_list, *cur_got_obj = NULL; |
252b5132 RH |
3678 | int something_changed = 0; |
3679 | ||
3680 | got_list = alpha_elf_hash_table (info)->got_list; | |
3681 | ||
3682 | /* On the first time through, pretend we have an existing got list | |
3683 | consisting of all of the input files. */ | |
3684 | if (got_list == NULL) | |
3685 | { | |
3686 | for (i = info->input_bfds; i ; i = i->link_next) | |
3687 | { | |
3688 | bfd *this_got = alpha_elf_tdata (i)->gotobj; | |
3689 | if (this_got == NULL) | |
3690 | continue; | |
3691 | ||
3692 | /* We are assuming no merging has yet ocurred. */ | |
3693 | BFD_ASSERT (this_got == i); | |
3694 | ||
3765b1be | 3695 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 RH |
3696 | { |
3697 | /* Yikes! A single object file has too many entries. */ | |
3698 | (*_bfd_error_handler) | |
3699 | (_("%s: .got subsegment exceeds 64K (size %d)"), | |
8f615d07 | 3700 | bfd_archive_filename (i), |
3765b1be | 3701 | alpha_elf_tdata (this_got)->total_got_size); |
b34976b6 | 3702 | return FALSE; |
252b5132 RH |
3703 | } |
3704 | ||
3705 | if (got_list == NULL) | |
3706 | got_list = this_got; | |
3707 | else | |
3708 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
3709 | cur_got_obj = this_got; | |
3710 | } | |
3711 | ||
3712 | /* Strange degenerate case of no got references. */ | |
3713 | if (got_list == NULL) | |
b34976b6 | 3714 | return TRUE; |
252b5132 RH |
3715 | |
3716 | alpha_elf_hash_table (info)->got_list = got_list; | |
3717 | ||
3718 | /* Force got offsets to be recalculated. */ | |
3719 | something_changed = 1; | |
3720 | } | |
3721 | ||
3722 | cur_got_obj = got_list; | |
3723 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
3724 | while (i != NULL) | |
3725 | { | |
3726 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
3727 | { | |
3728 | elf64_alpha_merge_gots (cur_got_obj, i); | |
3729 | i = alpha_elf_tdata(i)->got_link_next; | |
3730 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
3731 | something_changed = 1; | |
3732 | } | |
3733 | else | |
3734 | { | |
3735 | cur_got_obj = i; | |
3736 | i = alpha_elf_tdata(i)->got_link_next; | |
3737 | } | |
3738 | } | |
3739 | ||
3740 | /* Once the gots have been merged, fill in the got offsets for | |
3741 | everything therein. */ | |
3742 | if (1 || something_changed) | |
3743 | elf64_alpha_calc_got_offsets (info); | |
3744 | ||
b34976b6 | 3745 | return TRUE; |
252b5132 RH |
3746 | } |
3747 | ||
cedb70c5 | 3748 | /* Called from relax_section to rebuild the PLT in light of |
f44f99a5 RH |
3749 | potential changes in the function's status. */ |
3750 | ||
b34976b6 | 3751 | static bfd_boolean |
f44f99a5 RH |
3752 | elf64_alpha_size_plt_section (info) |
3753 | struct bfd_link_info *info; | |
3754 | { | |
3755 | asection *splt, *spltrel; | |
3756 | unsigned long entries; | |
3757 | bfd *dynobj; | |
3758 | ||
3759 | dynobj = elf_hash_table(info)->dynobj; | |
3760 | splt = bfd_get_section_by_name(dynobj, ".plt"); | |
3761 | if (splt == NULL) | |
b34976b6 | 3762 | return TRUE; |
f44f99a5 RH |
3763 | |
3764 | splt->_raw_size = 0; | |
3765 | ||
3766 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3767 | elf64_alpha_size_plt_section_1, splt); | |
3768 | ||
3769 | splt->_cooked_size = splt->_raw_size; | |
3770 | ||
3771 | /* Every plt entry requires a JMP_SLOT relocation. */ | |
3772 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3773 | if (splt->_raw_size) | |
3774 | entries = (splt->_raw_size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
3775 | else | |
3776 | entries = 0; | |
3777 | spltrel->_raw_size = entries * sizeof (Elf64_External_Rela); | |
3778 | spltrel->_cooked_size = spltrel->_raw_size; | |
3779 | ||
b34976b6 | 3780 | return TRUE; |
f44f99a5 RH |
3781 | } |
3782 | ||
b34976b6 | 3783 | static bfd_boolean |
f44f99a5 RH |
3784 | elf64_alpha_size_plt_section_1 (h, data) |
3785 | struct alpha_elf_link_hash_entry *h; | |
3786 | PTR data; | |
3787 | { | |
3788 | asection *splt = (asection *) data; | |
3789 | struct alpha_elf_got_entry *gotent; | |
3790 | ||
3791 | /* If we didn't need an entry before, we still don't. */ | |
3792 | if (!(h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)) | |
b34976b6 | 3793 | return TRUE; |
f44f99a5 RH |
3794 | |
3795 | /* There must still be a LITERAL got entry for the function. */ | |
3796 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
3797 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
3798 | && gotent->use_count > 0) | |
3799 | break; | |
3800 | ||
3801 | /* If there is, reset the PLT offset. If not, there's no longer | |
3802 | a need for the PLT entry. */ | |
3803 | if (gotent) | |
3804 | { | |
3805 | if (splt->_raw_size == 0) | |
3806 | splt->_raw_size = PLT_HEADER_SIZE; | |
3807 | h->root.plt.offset = splt->_raw_size; | |
3808 | splt->_raw_size += PLT_ENTRY_SIZE; | |
3809 | } | |
3810 | else | |
3811 | { | |
3812 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3813 | h->root.plt.offset = -1; | |
cc03ec80 RH |
3814 | |
3815 | /* Undo the definition frobbing begun in adjust_dynamic_symbol. */ | |
3816 | if (h->flags & ALPHA_ELF_LINK_HASH_PLT_LOC) | |
3817 | { | |
3818 | h->root.root.u.def.section = h->plt_old_section; | |
3819 | h->root.root.u.def.value = h->plt_old_value; | |
3820 | h->flags &= ~ALPHA_ELF_LINK_HASH_PLT_LOC; | |
3821 | } | |
f44f99a5 RH |
3822 | } |
3823 | ||
b34976b6 | 3824 | return TRUE; |
f44f99a5 RH |
3825 | } |
3826 | ||
b34976b6 | 3827 | static bfd_boolean |
252b5132 | 3828 | elf64_alpha_always_size_sections (output_bfd, info) |
f44f99a5 | 3829 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3830 | struct bfd_link_info *info; |
3831 | { | |
3832 | bfd *i; | |
3833 | ||
1049f94e | 3834 | if (info->relocatable) |
b34976b6 | 3835 | return TRUE; |
252b5132 RH |
3836 | |
3837 | /* First, take care of the indirect symbols created by versioning. */ | |
3838 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3839 | elf64_alpha_merge_ind_symbols, | |
3840 | NULL); | |
3841 | ||
f44f99a5 | 3842 | if (!elf64_alpha_size_got_sections (info)) |
b34976b6 | 3843 | return FALSE; |
252b5132 RH |
3844 | |
3845 | /* Allocate space for all of the .got subsections. */ | |
3846 | i = alpha_elf_hash_table (info)->got_list; | |
3847 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3848 | { | |
3849 | asection *s = alpha_elf_tdata(i)->got; | |
3850 | if (s->_raw_size > 0) | |
3851 | { | |
3852 | s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); | |
3853 | if (s->contents == NULL) | |
b34976b6 | 3854 | return FALSE; |
252b5132 RH |
3855 | } |
3856 | } | |
3857 | ||
b34976b6 | 3858 | return TRUE; |
252b5132 RH |
3859 | } |
3860 | ||
3765b1be RH |
3861 | /* The number of dynamic relocations required by a static relocation. */ |
3862 | ||
3863 | static int | |
3864 | alpha_dynamic_entries_for_reloc (r_type, dynamic, shared) | |
3865 | int r_type, dynamic, shared; | |
3866 | { | |
3867 | switch (r_type) | |
3868 | { | |
3869 | /* May appear in GOT entries. */ | |
3870 | case R_ALPHA_TLSGD: | |
3871 | return (dynamic ? 2 : shared ? 1 : 0); | |
3872 | case R_ALPHA_TLSLDM: | |
3873 | return shared; | |
3874 | case R_ALPHA_LITERAL: | |
1bbc9cec | 3875 | case R_ALPHA_GOTTPREL: |
3765b1be RH |
3876 | return dynamic || shared; |
3877 | case R_ALPHA_GOTDTPREL: | |
3765b1be RH |
3878 | return dynamic; |
3879 | ||
3880 | /* May appear in data sections. */ | |
3881 | case R_ALPHA_REFLONG: | |
3882 | case R_ALPHA_REFQUAD: | |
3765b1be | 3883 | case R_ALPHA_TPREL64: |
1bbc9cec | 3884 | return dynamic || shared; |
3765b1be RH |
3885 | |
3886 | /* Everything else is illegal. We'll issue an error during | |
3887 | relocate_section. */ | |
3888 | default: | |
3889 | return 0; | |
3890 | } | |
3891 | } | |
3892 | ||
252b5132 RH |
3893 | /* Work out the sizes of the dynamic relocation entries. */ |
3894 | ||
b34976b6 | 3895 | static bfd_boolean |
252b5132 RH |
3896 | elf64_alpha_calc_dynrel_sizes (h, info) |
3897 | struct alpha_elf_link_hash_entry *h; | |
3898 | struct bfd_link_info *info; | |
3899 | { | |
b34976b6 | 3900 | bfd_boolean dynamic; |
3765b1be | 3901 | struct alpha_elf_reloc_entry *relent; |
f44f99a5 | 3902 | unsigned long entries; |
3765b1be | 3903 | |
e92d460e AM |
3904 | if (h->root.root.type == bfd_link_hash_warning) |
3905 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3906 | ||
252b5132 RH |
3907 | /* If the symbol was defined as a common symbol in a regular object |
3908 | file, and there was no definition in any dynamic object, then the | |
3909 | linker will have allocated space for the symbol in a common | |
3910 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
3911 | set. This is done for dynamic symbols in | |
3912 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
3913 | symbols, somehow. */ | |
3914 | if (((h->root.elf_link_hash_flags | |
3915 | & (ELF_LINK_HASH_DEF_REGULAR | |
3916 | | ELF_LINK_HASH_REF_REGULAR | |
3917 | | ELF_LINK_HASH_DEF_DYNAMIC)) | |
3918 | == ELF_LINK_HASH_REF_REGULAR) | |
3919 | && (h->root.root.type == bfd_link_hash_defined | |
3920 | || h->root.root.type == bfd_link_hash_defweak) | |
3921 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
f44f99a5 | 3922 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
252b5132 RH |
3923 | |
3924 | /* If the symbol is dynamic, we'll need all the relocations in their | |
3925 | natural form. If this is a shared object, and it has been forced | |
3926 | local, we'll need the same number of RELATIVE relocations. */ | |
3927 | ||
3765b1be | 3928 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); |
252b5132 | 3929 | |
3765b1be RH |
3930 | for (relent = h->reloc_entries; relent; relent = relent->next) |
3931 | { | |
3932 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, | |
3933 | info->shared); | |
3934 | if (entries) | |
3935 | { | |
3936 | relent->srel->_raw_size += | |
3937 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
3938 | if (relent->reltext) | |
3939 | info->flags |= DT_TEXTREL; | |
3940 | } | |
3941 | } | |
252b5132 | 3942 | |
b34976b6 | 3943 | return TRUE; |
f44f99a5 RH |
3944 | } |
3945 | ||
3946 | /* Set the sizes of the dynamic relocation sections. */ | |
3947 | ||
b34976b6 | 3948 | static bfd_boolean |
f44f99a5 RH |
3949 | elf64_alpha_size_rela_got_section (info) |
3950 | struct bfd_link_info *info; | |
3951 | { | |
3952 | unsigned long entries; | |
3953 | bfd *i, *dynobj; | |
3954 | asection *srel; | |
3955 | ||
3956 | /* Shared libraries often require RELATIVE relocs, and some relocs | |
3957 | require attention for the main application as well. */ | |
cedb70c5 | 3958 | |
f44f99a5 RH |
3959 | entries = 0; |
3960 | for (i = alpha_elf_hash_table(info)->got_list; | |
3961 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
3962 | { | |
3963 | bfd *j; | |
3964 | ||
3965 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
3966 | { | |
3967 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
3968 | int k, n; | |
3969 | ||
3970 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
3971 | if (!local_got_entries) | |
3972 | continue; | |
3973 | ||
3974 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
3975 | for (gotent = local_got_entries[k]; | |
3976 | gotent ; gotent = gotent->next) | |
3977 | if (gotent->use_count > 0) | |
3978 | entries += (alpha_dynamic_entries_for_reloc | |
3979 | (gotent->reloc_type, 0, info->shared)); | |
3980 | } | |
3981 | } | |
3982 | ||
3983 | dynobj = elf_hash_table(info)->dynobj; | |
3984 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3985 | if (!srel) | |
3986 | { | |
3987 | BFD_ASSERT (entries == 0); | |
b34976b6 | 3988 | return TRUE; |
f44f99a5 RH |
3989 | } |
3990 | srel->_raw_size = sizeof (Elf64_External_Rela) * entries; | |
3991 | ||
3992 | /* Now do the non-local symbols. */ | |
3993 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3994 | elf64_alpha_size_rela_got_1, info); | |
3995 | ||
3996 | srel->_cooked_size = srel->_raw_size; | |
3997 | ||
b34976b6 | 3998 | return TRUE; |
f44f99a5 RH |
3999 | } |
4000 | ||
4001 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the | |
4002 | global symbols. */ | |
4003 | ||
b34976b6 | 4004 | static bfd_boolean |
f44f99a5 RH |
4005 | elf64_alpha_size_rela_got_1 (h, info) |
4006 | struct alpha_elf_link_hash_entry *h; | |
4007 | struct bfd_link_info *info; | |
4008 | { | |
b34976b6 | 4009 | bfd_boolean dynamic; |
f44f99a5 RH |
4010 | struct alpha_elf_got_entry *gotent; |
4011 | unsigned long entries; | |
4012 | ||
4013 | if (h->root.root.type == bfd_link_hash_warning) | |
4014 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
4015 | ||
4016 | /* If the symbol is dynamic, we'll need all the relocations in their | |
4017 | natural form. If this is a shared object, and it has been forced | |
4018 | local, we'll need the same number of RELATIVE relocations. */ | |
4019 | ||
4020 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
4021 | ||
3765b1be RH |
4022 | entries = 0; |
4023 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
f44f99a5 RH |
4024 | if (gotent->use_count > 0) |
4025 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
4026 | dynamic, info->shared); | |
252b5132 | 4027 | |
3765b1be RH |
4028 | /* If we are using a .plt entry, subtract one, as the first |
4029 | reference uses a .rela.plt entry instead. */ | |
4030 | if (h->root.plt.offset != MINUS_ONE) | |
4031 | entries--; | |
252b5132 | 4032 | |
3765b1be RH |
4033 | if (entries > 0) |
4034 | { | |
4035 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4036 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4037 | BFD_ASSERT (srel != NULL); | |
4038 | srel->_raw_size += sizeof (Elf64_External_Rela) * entries; | |
252b5132 RH |
4039 | } |
4040 | ||
b34976b6 | 4041 | return TRUE; |
252b5132 RH |
4042 | } |
4043 | ||
4044 | /* Set the sizes of the dynamic sections. */ | |
4045 | ||
b34976b6 | 4046 | static bfd_boolean |
252b5132 | 4047 | elf64_alpha_size_dynamic_sections (output_bfd, info) |
24a35864 | 4048 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
4049 | struct bfd_link_info *info; |
4050 | { | |
4051 | bfd *dynobj; | |
4052 | asection *s; | |
b34976b6 | 4053 | bfd_boolean relplt; |
252b5132 RH |
4054 | |
4055 | dynobj = elf_hash_table(info)->dynobj; | |
4056 | BFD_ASSERT(dynobj != NULL); | |
4057 | ||
4058 | if (elf_hash_table (info)->dynamic_sections_created) | |
4059 | { | |
4060 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 4061 | if (info->executable) |
252b5132 RH |
4062 | { |
4063 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4064 | BFD_ASSERT (s != NULL); | |
4065 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4066 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4067 | } | |
4068 | ||
4069 | /* Now that we've seen all of the input files, we can decide which | |
4070 | symbols need dynamic relocation entries and which don't. We've | |
4071 | collected information in check_relocs that we can now apply to | |
4072 | size the dynamic relocation sections. */ | |
4073 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
f44f99a5 | 4074 | elf64_alpha_calc_dynrel_sizes, info); |
252b5132 | 4075 | |
f44f99a5 | 4076 | elf64_alpha_size_rela_got_section (info); |
252b5132 RH |
4077 | } |
4078 | /* else we're not dynamic and by definition we don't need such things. */ | |
4079 | ||
4080 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
4081 | determined the sizes of the various dynamic sections. Allocate | |
4082 | memory for them. */ | |
b34976b6 | 4083 | relplt = FALSE; |
252b5132 RH |
4084 | for (s = dynobj->sections; s != NULL; s = s->next) |
4085 | { | |
4086 | const char *name; | |
b34976b6 | 4087 | bfd_boolean strip; |
252b5132 RH |
4088 | |
4089 | if (!(s->flags & SEC_LINKER_CREATED)) | |
4090 | continue; | |
4091 | ||
4092 | /* It's OK to base decisions on the section name, because none | |
4093 | of the dynobj section names depend upon the input files. */ | |
4094 | name = bfd_get_section_name (dynobj, s); | |
4095 | ||
4096 | /* If we don't need this section, strip it from the output file. | |
4097 | This is to handle .rela.bss and .rela.plt. We must create it | |
4098 | in create_dynamic_sections, because it must be created before | |
4099 | the linker maps input sections to output sections. The | |
4100 | linker does that before adjust_dynamic_symbol is called, and | |
4101 | it is that function which decides whether anything needs to | |
4102 | go into these sections. */ | |
4103 | ||
b34976b6 | 4104 | strip = FALSE; |
252b5132 RH |
4105 | |
4106 | if (strncmp (name, ".rela", 5) == 0) | |
4107 | { | |
4108 | strip = (s->_raw_size == 0); | |
4109 | ||
4110 | if (!strip) | |
4111 | { | |
252b5132 | 4112 | if (strcmp(name, ".rela.plt") == 0) |
b34976b6 | 4113 | relplt = TRUE; |
252b5132 RH |
4114 | |
4115 | /* We use the reloc_count field as a counter if we need | |
4116 | to copy relocs into the output file. */ | |
4117 | s->reloc_count = 0; | |
4118 | } | |
4119 | } | |
4120 | else if (strcmp (name, ".plt") != 0) | |
4121 | { | |
4122 | /* It's not one of our dynamic sections, so don't allocate space. */ | |
4123 | continue; | |
4124 | } | |
4125 | ||
4126 | if (strip) | |
7f8d5fc9 | 4127 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
4128 | else |
4129 | { | |
4130 | /* Allocate memory for the section contents. */ | |
dc810e39 | 4131 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
252b5132 | 4132 | if (s->contents == NULL && s->_raw_size != 0) |
b34976b6 | 4133 | return FALSE; |
252b5132 RH |
4134 | } |
4135 | } | |
4136 | ||
252b5132 RH |
4137 | if (elf_hash_table (info)->dynamic_sections_created) |
4138 | { | |
4139 | /* Add some entries to the .dynamic section. We fill in the | |
4140 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
4141 | must add the entries now so that we get the correct size for | |
4142 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4143 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
4144 | #define add_dynamic_entry(TAG, VAL) \ |
4145 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
4146 | ||
36af4a4e | 4147 | if (info->executable) |
252b5132 | 4148 | { |
dc810e39 | 4149 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 4150 | return FALSE; |
252b5132 RH |
4151 | } |
4152 | ||
252b5132 RH |
4153 | if (relplt) |
4154 | { | |
c0647bfc JT |
4155 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
4156 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
dc810e39 AM |
4157 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
4158 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 4159 | return FALSE; |
252b5132 RH |
4160 | } |
4161 | ||
dc810e39 AM |
4162 | if (!add_dynamic_entry (DT_RELA, 0) |
4163 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4164 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 4165 | return FALSE; |
252b5132 | 4166 | |
fcfbdf31 | 4167 | if (info->flags & DF_TEXTREL) |
252b5132 | 4168 | { |
dc810e39 | 4169 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 4170 | return FALSE; |
252b5132 RH |
4171 | } |
4172 | } | |
dc810e39 | 4173 | #undef add_dynamic_entry |
252b5132 | 4174 | |
b34976b6 | 4175 | return TRUE; |
252b5132 RH |
4176 | } |
4177 | ||
1bbc9cec RH |
4178 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
4179 | into the next available slot in SREL. */ | |
4180 | ||
4181 | static void | |
4182 | elf64_alpha_emit_dynrel (abfd, info, sec, srel, offset, dynindx, rtype, addend) | |
4183 | bfd *abfd; | |
4184 | struct bfd_link_info *info; | |
4185 | asection *sec, *srel; | |
4186 | bfd_vma offset, addend; | |
4187 | long dynindx, rtype; | |
4188 | { | |
4189 | Elf_Internal_Rela outrel; | |
4190 | bfd_byte *loc; | |
4191 | ||
4192 | BFD_ASSERT (srel != NULL); | |
4193 | ||
4194 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
4195 | outrel.r_addend = addend; | |
4196 | ||
4197 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
4198 | if ((offset | 1) != (bfd_vma) -1) | |
4199 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
4200 | else | |
4201 | memset (&outrel, 0, sizeof (outrel)); | |
4202 | ||
4203 | loc = srel->contents; | |
4204 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
4205 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
4206 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count | |
4207 | <= srel->_cooked_size); | |
4208 | } | |
4209 | ||
4a67a098 RH |
4210 | /* Relocate an Alpha ELF section for a relocatable link. |
4211 | ||
4212 | We don't have to change anything unless the reloc is against a section | |
4213 | symbol, in which case we have to adjust according to where the section | |
4214 | symbol winds up in the output section. */ | |
4215 | ||
b34976b6 | 4216 | static bfd_boolean |
4a67a098 RH |
4217 | elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, input_section, |
4218 | contents, relocs, local_syms, local_sections) | |
4219 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
4220 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
4221 | bfd *input_bfd; | |
4222 | asection *input_section; | |
4223 | bfd_byte *contents ATTRIBUTE_UNUSED; | |
4224 | Elf_Internal_Rela *relocs; | |
4225 | Elf_Internal_Sym *local_syms; | |
4226 | asection **local_sections; | |
4227 | { | |
4228 | unsigned long symtab_hdr_sh_info; | |
4229 | Elf_Internal_Rela *rel; | |
4230 | Elf_Internal_Rela *relend; | |
b34976b6 | 4231 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
4232 | |
4233 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
4234 | ||
4235 | relend = relocs + input_section->reloc_count; | |
4236 | for (rel = relocs; rel < relend; rel++) | |
4237 | { | |
4238 | unsigned long r_symndx; | |
4239 | Elf_Internal_Sym *sym; | |
4240 | asection *sec; | |
4241 | unsigned long r_type; | |
4242 | ||
4243 | r_type = ELF64_R_TYPE(rel->r_info); | |
4244 | if (r_type >= R_ALPHA_max) | |
4245 | { | |
4246 | (*_bfd_error_handler) | |
4247 | (_("%s: unknown relocation type %d"), | |
4248 | bfd_archive_filename (input_bfd), (int)r_type); | |
4249 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 4250 | ret_val = FALSE; |
4a67a098 RH |
4251 | continue; |
4252 | } | |
4253 | ||
4254 | r_symndx = ELF64_R_SYM(rel->r_info); | |
4255 | ||
4256 | /* The symbol associated with GPDISP and LITUSE is | |
4257 | immaterial. Only the addend is significant. */ | |
4258 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
4259 | continue; | |
4260 | ||
4261 | if (r_symndx < symtab_hdr_sh_info) | |
4262 | { | |
4263 | sym = local_syms + r_symndx; | |
4264 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
4265 | { | |
4266 | sec = local_sections[r_symndx]; | |
4267 | rel->r_addend += sec->output_offset + sym->st_value; | |
4268 | } | |
4269 | } | |
4270 | } | |
4271 | ||
4272 | return ret_val; | |
4273 | } | |
4274 | ||
252b5132 RH |
4275 | /* Relocate an Alpha ELF section. */ |
4276 | ||
b34976b6 | 4277 | static bfd_boolean |
252b5132 RH |
4278 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, |
4279 | contents, relocs, local_syms, local_sections) | |
4280 | bfd *output_bfd; | |
4281 | struct bfd_link_info *info; | |
4282 | bfd *input_bfd; | |
4283 | asection *input_section; | |
4284 | bfd_byte *contents; | |
4285 | Elf_Internal_Rela *relocs; | |
4286 | Elf_Internal_Sym *local_syms; | |
4287 | asection **local_sections; | |
4288 | { | |
4a67a098 | 4289 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
4290 | Elf_Internal_Rela *rel; |
4291 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
4292 | struct elf_link_tls_segment *tls_segment; |
4293 | asection *sgot, *srel, *srelgot; | |
4294 | bfd *dynobj, *gotobj; | |
4295 | bfd_vma gp, tp_base, dtp_base; | |
4296 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4297 | bfd_boolean ret_val; |
4a67a098 | 4298 | const char *section_name; |
252b5132 | 4299 | |
4a67a098 | 4300 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 4301 | if (info->relocatable) |
4a67a098 RH |
4302 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4303 | input_section, contents, relocs, | |
4304 | local_syms, local_sections); | |
4305 | ||
4306 | /* This is a final link. */ | |
4307 | ||
b34976b6 | 4308 | ret_val = TRUE; |
252b5132 | 4309 | |
4a67a098 | 4310 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 4311 | |
4a67a098 RH |
4312 | dynobj = elf_hash_table (info)->dynobj; |
4313 | if (dynobj) | |
4314 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4315 | else | |
4316 | srelgot = NULL; | |
4317 | ||
4318 | section_name = (bfd_elf_string_from_elf_section | |
4319 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4320 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4321 | BFD_ASSERT(section_name != NULL); | |
4322 | srel = bfd_get_section_by_name (dynobj, section_name); | |
3765b1be | 4323 | |
4a67a098 RH |
4324 | /* Find the gp value for this input bfd. */ |
4325 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4326 | if (gotobj) | |
4327 | { | |
4328 | sgot = alpha_elf_tdata (gotobj)->got; | |
4329 | gp = _bfd_get_gp_value (gotobj); | |
4330 | if (gp == 0) | |
252b5132 | 4331 | { |
4a67a098 RH |
4332 | gp = (sgot->output_section->vma |
4333 | + sgot->output_offset | |
4334 | + 0x8000); | |
4335 | _bfd_set_gp_value (gotobj, gp); | |
4336 | } | |
4337 | } | |
4338 | else | |
4339 | { | |
4340 | sgot = NULL; | |
4341 | gp = 0; | |
4342 | } | |
3765b1be | 4343 | |
4a67a098 RH |
4344 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4345 | ||
4346 | tls_segment = elf_hash_table (info)->tls_segment; | |
4347 | if (tls_segment) | |
4348 | { | |
4349 | dtp_base = alpha_get_dtprel_base (tls_segment); | |
4350 | tp_base = alpha_get_tprel_base (tls_segment); | |
252b5132 | 4351 | } |
4a67a098 RH |
4352 | else |
4353 | dtp_base = tp_base = 0; | |
252b5132 | 4354 | |
252b5132 | 4355 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4356 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4357 | { |
4a67a098 | 4358 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4359 | struct alpha_elf_got_entry *gotent; |
4360 | bfd_reloc_status_type r; | |
252b5132 RH |
4361 | reloc_howto_type *howto; |
4362 | unsigned long r_symndx; | |
4a67a098 RH |
4363 | Elf_Internal_Sym *sym = NULL; |
4364 | asection *sec = NULL; | |
3765b1be | 4365 | bfd_vma value; |
dc810e39 | 4366 | bfd_vma addend; |
b34976b6 AM |
4367 | bfd_boolean dynamic_symbol_p; |
4368 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4369 | unsigned long r_type; |
252b5132 RH |
4370 | |
4371 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4372 | if (r_type >= R_ALPHA_max) |
252b5132 | 4373 | { |
3765b1be RH |
4374 | (*_bfd_error_handler) |
4375 | (_("%s: unknown relocation type %d"), | |
4376 | bfd_archive_filename (input_bfd), (int)r_type); | |
252b5132 | 4377 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4378 | ret_val = FALSE; |
3765b1be | 4379 | continue; |
252b5132 | 4380 | } |
252b5132 | 4381 | |
3765b1be | 4382 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4383 | r_symndx = ELF64_R_SYM(rel->r_info); |
4384 | ||
cc03ec80 RH |
4385 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4386 | reloc to the 0 symbol so that they all match. */ | |
4387 | if (r_type == R_ALPHA_TLSLDM) | |
4388 | r_symndx = 0; | |
4389 | ||
252b5132 RH |
4390 | if (r_symndx < symtab_hdr->sh_info) |
4391 | { | |
4392 | sym = local_syms + r_symndx; | |
4393 | sec = local_sections[r_symndx]; | |
3765b1be RH |
4394 | value = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
4395 | ||
cc03ec80 RH |
4396 | /* If this is a tp-relative relocation against sym 0, |
4397 | this is hackery from relax_section. Force the value to | |
4398 | be the tls base. */ | |
4399 | if (r_symndx == 0 | |
4400 | && (r_type == R_ALPHA_TLSLDM | |
4401 | || r_type == R_ALPHA_GOTTPREL | |
4402 | || r_type == R_ALPHA_TPREL64 | |
4403 | || r_type == R_ALPHA_TPRELHI | |
4404 | || r_type == R_ALPHA_TPRELLO | |
4405 | || r_type == R_ALPHA_TPREL16)) | |
4406 | value = tp_base; | |
4407 | ||
4a67a098 RH |
4408 | if (local_got_entries) |
4409 | gotent = local_got_entries[r_symndx]; | |
4410 | else | |
4411 | gotent = NULL; | |
3765b1be RH |
4412 | |
4413 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4414 | unless it has been done already. */ | |
4415 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4416 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4417 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4418 | && gotent |
4419 | && !gotent->reloc_xlated) | |
3765b1be RH |
4420 | { |
4421 | struct alpha_elf_got_entry *ent; | |
4422 | asection *msec; | |
4423 | ||
4424 | for (ent = gotent; ent; ent = ent->next) | |
4425 | { | |
4426 | ent->reloc_xlated = 1; | |
4427 | if (ent->use_count == 0) | |
4428 | continue; | |
4429 | msec = sec; | |
4430 | ent->addend = | |
4431 | _bfd_merged_section_offset (output_bfd, &msec, | |
4432 | elf_section_data (sec)-> | |
4433 | sec_info, | |
4434 | sym->st_value + ent->addend, | |
4435 | (bfd_vma) 0); | |
4436 | ent->addend -= sym->st_value; | |
4437 | ent->addend += msec->output_section->vma | |
4438 | + msec->output_offset | |
4439 | - sec->output_section->vma | |
4440 | - sec->output_offset; | |
4441 | } | |
4442 | } | |
4443 | ||
b34976b6 | 4444 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4445 | } |
4446 | else | |
4447 | { | |
4448 | h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; | |
4449 | ||
4450 | while (h->root.root.type == bfd_link_hash_indirect | |
4451 | || h->root.root.type == bfd_link_hash_warning) | |
4452 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
4453 | ||
3765b1be | 4454 | value = 0; |
252b5132 RH |
4455 | if (h->root.root.type == bfd_link_hash_defined |
4456 | || h->root.root.type == bfd_link_hash_defweak) | |
4457 | { | |
4458 | sec = h->root.root.u.def.section; | |
4459 | ||
3765b1be RH |
4460 | /* Detect the cases that sym_sec->output_section is |
4461 | expected to be NULL -- all cases in which the symbol | |
4462 | is defined in another shared module. This includes | |
4463 | PLT relocs for which we've created a PLT entry and | |
4464 | other relocs for which we're prepared to create | |
4465 | dynamic relocations. */ | |
4466 | /* ??? Just accept it NULL and continue. */ | |
4467 | ||
4468 | if (sec->output_section != NULL) | |
4469 | value = (h->root.root.u.def.value | |
4470 | + sec->output_section->vma | |
4471 | + sec->output_offset); | |
252b5132 RH |
4472 | } |
4473 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4474 | undef_weak_ref = TRUE; |
9203ba99 | 4475 | else if (!info->executable |
3a27a730 | 4476 | && !info->no_undefined |
edb72b3b | 4477 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
3765b1be | 4478 | ; |
252b5132 RH |
4479 | else |
4480 | { | |
4481 | if (!((*info->callbacks->undefined_symbol) | |
4482 | (info, h->root.root.root.string, input_bfd, | |
5cc7c785 | 4483 | input_section, rel->r_offset, |
15f40dfc | 4484 | (info->executable || info->no_undefined |
edb72b3b | 4485 | || ELF_ST_VISIBILITY (h->root.other))))) |
b34976b6 | 4486 | return FALSE; |
3765b1be | 4487 | continue; |
252b5132 | 4488 | } |
3765b1be RH |
4489 | |
4490 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); | |
4491 | gotent = h->got_entries; | |
252b5132 | 4492 | } |
3765b1be | 4493 | |
252b5132 | 4494 | addend = rel->r_addend; |
3765b1be RH |
4495 | value += addend; |
4496 | ||
4497 | /* Search for the proper got entry. */ | |
4498 | for (; gotent ; gotent = gotent->next) | |
4499 | if (gotent->gotobj == gotobj | |
4500 | && gotent->reloc_type == r_type | |
4501 | && gotent->addend == addend) | |
4502 | break; | |
252b5132 RH |
4503 | |
4504 | switch (r_type) | |
4505 | { | |
4506 | case R_ALPHA_GPDISP: | |
4507 | { | |
4508 | bfd_byte *p_ldah, *p_lda; | |
4509 | ||
4510 | BFD_ASSERT(gp != 0); | |
4511 | ||
3765b1be RH |
4512 | value = (input_section->output_section->vma |
4513 | + input_section->output_offset | |
4514 | + rel->r_offset); | |
252b5132 | 4515 | |
3765b1be | 4516 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4517 | p_lda = p_ldah + rel->r_addend; |
4518 | ||
3765b1be | 4519 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4520 | p_ldah, p_lda); |
4521 | } | |
4522 | break; | |
4523 | ||
252b5132 | 4524 | case R_ALPHA_LITERAL: |
3765b1be RH |
4525 | BFD_ASSERT(sgot != NULL); |
4526 | BFD_ASSERT(gp != 0); | |
4527 | BFD_ASSERT(gotent != NULL); | |
4528 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4529 | |
3765b1be RH |
4530 | if (!gotent->reloc_done) |
4531 | { | |
4532 | gotent->reloc_done = 1; | |
252b5132 | 4533 | |
3765b1be RH |
4534 | bfd_put_64 (output_bfd, value, |
4535 | sgot->contents + gotent->got_offset); | |
252b5132 | 4536 | |
3765b1be RH |
4537 | /* If the symbol has been forced local, output a |
4538 | RELATIVE reloc, otherwise it will be handled in | |
4539 | finish_dynamic_symbol. */ | |
4540 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4541 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4542 | gotent->got_offset, 0, | |
4543 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4544 | } |
252b5132 | 4545 | |
3765b1be RH |
4546 | value = (sgot->output_section->vma |
4547 | + sgot->output_offset | |
4548 | + gotent->got_offset); | |
4549 | value -= gp; | |
252b5132 RH |
4550 | goto default_reloc; |
4551 | ||
4552 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4553 | /* If the target section was a removed linkonce section, |
4554 | r_symndx will be zero. In this case, assume that the | |
4555 | switch will not be used, so don't fill it in. If we | |
4556 | do nothing here, we'll get relocation truncated messages, | |
4557 | due to the placement of the application above 4GB. */ | |
4558 | if (r_symndx == 0) | |
4559 | { | |
4560 | r = bfd_reloc_ok; | |
4561 | break; | |
4562 | } | |
4563 | /* FALLTHRU */ | |
4564 | ||
4565 | case R_ALPHA_GPREL16: | |
252b5132 | 4566 | case R_ALPHA_GPRELLOW: |
3765b1be | 4567 | if (dynamic_symbol_p) |
f16fbd61 RH |
4568 | { |
4569 | (*_bfd_error_handler) | |
4570 | (_("%s: gp-relative relocation against dynamic symbol %s"), | |
8f615d07 | 4571 | bfd_archive_filename (input_bfd), h->root.root.root.string); |
b34976b6 | 4572 | ret_val = FALSE; |
f16fbd61 | 4573 | } |
252b5132 | 4574 | BFD_ASSERT(gp != 0); |
3765b1be | 4575 | value -= gp; |
252b5132 RH |
4576 | goto default_reloc; |
4577 | ||
4578 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4579 | if (dynamic_symbol_p) |
f16fbd61 RH |
4580 | { |
4581 | (*_bfd_error_handler) | |
4582 | (_("%s: gp-relative relocation against dynamic symbol %s"), | |
8f615d07 | 4583 | bfd_archive_filename (input_bfd), h->root.root.root.string); |
b34976b6 | 4584 | ret_val = FALSE; |
f16fbd61 | 4585 | } |
252b5132 | 4586 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4587 | value -= gp; |
4588 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4589 | goto default_reloc; |
4590 | ||
252b5132 | 4591 | case R_ALPHA_HINT: |
f94952df RH |
4592 | /* A call to a dynamic symbol is definitely out of range of |
4593 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4594 | if (dynamic_symbol_p) |
f94952df RH |
4595 | { |
4596 | r = bfd_reloc_ok; | |
4597 | break; | |
4598 | } | |
3765b1be RH |
4599 | /* The regular PC-relative stuff measures from the start of |
4600 | the instruction rather than the end. */ | |
4601 | value -= 4; | |
4602 | goto default_reloc; | |
f94952df RH |
4603 | |
4604 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4605 | if (dynamic_symbol_p) |
4606 | { | |
4607 | (*_bfd_error_handler) | |
4608 | (_("%s: pc-relative relocation against dynamic symbol %s"), | |
4609 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
b34976b6 | 4610 | ret_val = FALSE; |
3765b1be | 4611 | } |
252b5132 RH |
4612 | /* The regular PC-relative stuff measures from the start of |
4613 | the instruction rather than the end. */ | |
3765b1be | 4614 | value -= 4; |
252b5132 RH |
4615 | goto default_reloc; |
4616 | ||
7793f4d0 RH |
4617 | case R_ALPHA_BRSGP: |
4618 | { | |
4619 | int other; | |
4620 | const char *name; | |
4621 | ||
4622 | /* The regular PC-relative stuff measures from the start of | |
4623 | the instruction rather than the end. */ | |
3765b1be | 4624 | value -= 4; |
7793f4d0 | 4625 | |
ccf00ab6 RH |
4626 | /* The source and destination gp must be the same. Note that |
4627 | the source will always have an assigned gp, since we forced | |
4628 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4629 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4630 | care not to crash if H is an undefined symbol. */ |
4631 | if (h != NULL && sec != NULL | |
4632 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4633 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4634 | { | |
7793f4d0 RH |
4635 | (*_bfd_error_handler) |
4636 | (_("%s: change in gp: BRSGP %s"), | |
ccf00ab6 | 4637 | bfd_archive_filename (input_bfd), h->root.root.root.string); |
b34976b6 | 4638 | ret_val = FALSE; |
7793f4d0 RH |
4639 | } |
4640 | ||
4641 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4642 | if (h != NULL) | |
4643 | other = h->root.other; | |
4644 | else | |
4645 | other = sym->st_other; | |
4646 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4647 | { | |
4648 | case STO_ALPHA_NOPV: | |
4649 | break; | |
4650 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4651 | value += 8; |
7793f4d0 RH |
4652 | break; |
4653 | default: | |
4654 | if (h != NULL) | |
4655 | name = h->root.root.root.string; | |
4656 | else | |
4657 | { | |
4658 | name = (bfd_elf_string_from_elf_section | |
4659 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4660 | if (name == NULL) | |
4661 | name = _("<unknown>"); | |
4662 | else if (name[0] == 0) | |
4663 | name = bfd_section_name (input_bfd, sec); | |
4664 | } | |
4665 | (*_bfd_error_handler) | |
4666 | (_("%s: !samegp reloc against symbol without .prologue: %s"), | |
4667 | bfd_archive_filename (input_bfd), name); | |
b34976b6 | 4668 | ret_val = FALSE; |
7793f4d0 RH |
4669 | break; |
4670 | } | |
4671 | ||
4672 | goto default_reloc; | |
4673 | } | |
4674 | ||
252b5132 RH |
4675 | case R_ALPHA_REFLONG: |
4676 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4677 | case R_ALPHA_DTPREL64: |
4678 | case R_ALPHA_TPREL64: | |
252b5132 | 4679 | { |
1bbc9cec RH |
4680 | long dynindx, dyntype = r_type; |
4681 | bfd_vma dynaddend; | |
252b5132 RH |
4682 | |
4683 | /* Careful here to remember RELATIVE relocations for global | |
4684 | variables for symbolic shared objects. */ | |
4685 | ||
3765b1be | 4686 | if (dynamic_symbol_p) |
252b5132 RH |
4687 | { |
4688 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4689 | dynindx = h->root.dynindx; |
4690 | dynaddend = addend; | |
3765b1be RH |
4691 | addend = 0, value = 0; |
4692 | } | |
4693 | else if (r_type == R_ALPHA_DTPREL64) | |
4694 | { | |
4695 | BFD_ASSERT(tls_segment != NULL); | |
4696 | value -= dtp_base; | |
4697 | goto default_reloc; | |
4698 | } | |
4699 | else if (r_type == R_ALPHA_TPREL64) | |
4700 | { | |
4701 | BFD_ASSERT(tls_segment != NULL); | |
1bbc9cec RH |
4702 | if (!info->shared) |
4703 | { | |
4704 | value -= tp_base; | |
4705 | goto default_reloc; | |
4706 | } | |
4707 | dynindx = 0; | |
4708 | dynaddend = value - dtp_base; | |
252b5132 | 4709 | } |
ec338859 AM |
4710 | else if (info->shared |
4711 | && r_symndx != 0 | |
4712 | && (input_section->flags & SEC_ALLOC)) | |
252b5132 | 4713 | { |
3765b1be RH |
4714 | if (r_type == R_ALPHA_REFLONG) |
4715 | { | |
4716 | (*_bfd_error_handler) | |
4717 | (_("%s: unhandled dynamic relocation against %s"), | |
4718 | bfd_archive_filename (input_bfd), | |
4719 | h->root.root.root.string); | |
b34976b6 | 4720 | ret_val = FALSE; |
3765b1be | 4721 | } |
1bbc9cec RH |
4722 | dynindx = 0; |
4723 | dyntype = R_ALPHA_RELATIVE; | |
4724 | dynaddend = value; | |
252b5132 RH |
4725 | } |
4726 | else | |
4727 | goto default_reloc; | |
4728 | ||
1bbc9cec RH |
4729 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, |
4730 | srel, rel->r_offset, dynindx, | |
4731 | dyntype, dynaddend); | |
252b5132 RH |
4732 | } |
4733 | goto default_reloc; | |
4734 | ||
3765b1be | 4735 | case R_ALPHA_SREL16: |
84de6048 RH |
4736 | case R_ALPHA_SREL32: |
4737 | case R_ALPHA_SREL64: | |
3765b1be RH |
4738 | if (dynamic_symbol_p) |
4739 | { | |
4740 | (*_bfd_error_handler) | |
4741 | (_("%s: pc-relative relocation against dynamic symbol %s"), | |
4742 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
b34976b6 | 4743 | ret_val = FALSE; |
3765b1be RH |
4744 | } |
4745 | ||
84de6048 RH |
4746 | /* ??? .eh_frame references to discarded sections will be smashed |
4747 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4748 | NULL to be encoded as 0 in any format, so this works here. */ | |
4749 | if (r_symndx == 0) | |
4750 | howto = (elf64_alpha_howto_table | |
4751 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4752 | goto default_reloc; | |
4753 | ||
3765b1be RH |
4754 | case R_ALPHA_TLSLDM: |
4755 | /* Ignore the symbol for the relocation. The result is always | |
4756 | the current module. */ | |
4757 | dynamic_symbol_p = 0; | |
4758 | /* FALLTHRU */ | |
4759 | ||
4760 | case R_ALPHA_TLSGD: | |
4761 | if (!gotent->reloc_done) | |
4762 | { | |
4763 | gotent->reloc_done = 1; | |
4764 | ||
4765 | /* Note that the module index for the main program is 1. */ | |
4766 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4767 | sgot->contents + gotent->got_offset); | |
4768 | ||
4769 | /* If the symbol has been forced local, output a | |
4770 | DTPMOD64 reloc, otherwise it will be handled in | |
4771 | finish_dynamic_symbol. */ | |
4772 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4773 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4774 | gotent->got_offset, 0, | |
4775 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4776 | |
4777 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4778 | value = 0; | |
4779 | else | |
4780 | { | |
4781 | BFD_ASSERT(tls_segment != NULL); | |
4782 | value -= dtp_base; | |
4783 | } | |
4784 | bfd_put_64 (output_bfd, value, | |
4785 | sgot->contents + gotent->got_offset + 8); | |
4786 | } | |
4787 | ||
4788 | value = (sgot->output_section->vma | |
4789 | + sgot->output_offset | |
4790 | + gotent->got_offset); | |
4791 | value -= gp; | |
4792 | goto default_reloc; | |
4793 | ||
4794 | case R_ALPHA_DTPRELHI: | |
4795 | case R_ALPHA_DTPRELLO: | |
4796 | case R_ALPHA_DTPREL16: | |
4797 | if (dynamic_symbol_p) | |
4798 | { | |
4799 | (*_bfd_error_handler) | |
4800 | (_("%s: dtp-relative relocation against dynamic symbol %s"), | |
4801 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
b34976b6 | 4802 | ret_val = FALSE; |
3765b1be RH |
4803 | } |
4804 | BFD_ASSERT(tls_segment != NULL); | |
4805 | value -= dtp_base; | |
9e756d64 RH |
4806 | if (r_type == R_ALPHA_DTPRELHI) |
4807 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4808 | goto default_reloc; |
4809 | ||
4810 | case R_ALPHA_TPRELHI: | |
4811 | case R_ALPHA_TPRELLO: | |
4812 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4813 | if (info->shared) |
4814 | { | |
4815 | (*_bfd_error_handler) | |
4816 | (_("%s: TLS local exec code cannot be linked into shared objects"), | |
4817 | bfd_archive_filename (input_bfd)); | |
b34976b6 | 4818 | ret_val = FALSE; |
9e756d64 RH |
4819 | } |
4820 | else if (dynamic_symbol_p) | |
3765b1be RH |
4821 | { |
4822 | (*_bfd_error_handler) | |
4823 | (_("%s: tp-relative relocation against dynamic symbol %s"), | |
4824 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
b34976b6 | 4825 | ret_val = FALSE; |
3765b1be RH |
4826 | } |
4827 | BFD_ASSERT(tls_segment != NULL); | |
4828 | value -= tp_base; | |
9e756d64 RH |
4829 | if (r_type == R_ALPHA_TPRELHI) |
4830 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4831 | goto default_reloc; |
4832 | ||
4833 | case R_ALPHA_GOTDTPREL: | |
4834 | case R_ALPHA_GOTTPREL: | |
4835 | BFD_ASSERT(sgot != NULL); | |
4836 | BFD_ASSERT(gp != 0); | |
4837 | BFD_ASSERT(gotent != NULL); | |
4838 | BFD_ASSERT(gotent->use_count >= 1); | |
4839 | ||
4840 | if (!gotent->reloc_done) | |
4841 | { | |
4842 | gotent->reloc_done = 1; | |
4843 | ||
4844 | if (dynamic_symbol_p) | |
4845 | value = 0; | |
4846 | else | |
4847 | { | |
4848 | BFD_ASSERT(tls_segment != NULL); | |
1bbc9cec RH |
4849 | if (r_type == R_ALPHA_GOTDTPREL) |
4850 | value -= dtp_base; | |
4851 | else if (!info->shared) | |
4852 | value -= tp_base; | |
4853 | else | |
4854 | { | |
4855 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4856 | gotent->got_offset, 0, | |
4857 | R_ALPHA_TPREL64, | |
4858 | value - dtp_base); | |
4859 | value = 0; | |
4860 | } | |
3765b1be RH |
4861 | } |
4862 | bfd_put_64 (output_bfd, value, | |
4863 | sgot->contents + gotent->got_offset); | |
4864 | } | |
4865 | ||
4866 | value = (sgot->output_section->vma | |
4867 | + sgot->output_offset | |
4868 | + gotent->got_offset); | |
4869 | value -= gp; | |
4870 | goto default_reloc; | |
4871 | ||
252b5132 RH |
4872 | default: |
4873 | default_reloc: | |
4874 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4875 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4876 | break; |
4877 | } | |
4878 | ||
4879 | switch (r) | |
4880 | { | |
4881 | case bfd_reloc_ok: | |
4882 | break; | |
4883 | ||
4884 | case bfd_reloc_overflow: | |
4885 | { | |
4886 | const char *name; | |
4887 | ||
ed4de5e2 JJ |
4888 | /* Don't warn if the overflow is due to pc relative reloc |
4889 | against discarded section. Section optimization code should | |
4890 | handle it. */ | |
4891 | ||
4892 | if (r_symndx < symtab_hdr->sh_info | |
4893 | && sec != NULL && howto->pc_relative | |
4894 | && elf_discarded_section (sec)) | |
4895 | break; | |
4896 | ||
252b5132 RH |
4897 | if (h != NULL) |
4898 | name = h->root.root.root.string; | |
4899 | else | |
4900 | { | |
4901 | name = (bfd_elf_string_from_elf_section | |
4902 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4903 | if (name == NULL) | |
b34976b6 | 4904 | return FALSE; |
252b5132 RH |
4905 | if (*name == '\0') |
4906 | name = bfd_section_name (input_bfd, sec); | |
4907 | } | |
4908 | if (! ((*info->callbacks->reloc_overflow) | |
4909 | (info, name, howto->name, (bfd_vma) 0, | |
4910 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 4911 | ret_val = FALSE; |
252b5132 RH |
4912 | } |
4913 | break; | |
4914 | ||
4915 | default: | |
4916 | case bfd_reloc_outofrange: | |
4917 | abort (); | |
4918 | } | |
4919 | } | |
4920 | ||
f16fbd61 | 4921 | return ret_val; |
252b5132 RH |
4922 | } |
4923 | ||
4924 | /* Finish up dynamic symbol handling. We set the contents of various | |
4925 | dynamic sections here. */ | |
4926 | ||
b34976b6 | 4927 | static bfd_boolean |
252b5132 RH |
4928 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) |
4929 | bfd *output_bfd; | |
4930 | struct bfd_link_info *info; | |
4931 | struct elf_link_hash_entry *h; | |
4932 | Elf_Internal_Sym *sym; | |
4933 | { | |
4934 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4935 | ||
4936 | if (h->plt.offset != MINUS_ONE) | |
4937 | { | |
4938 | /* Fill in the .plt entry for this symbol. */ | |
4939 | asection *splt, *sgot, *srel; | |
4940 | Elf_Internal_Rela outrel; | |
947216bf | 4941 | bfd_byte *loc; |
252b5132 RH |
4942 | bfd_vma got_addr, plt_addr; |
4943 | bfd_vma plt_index; | |
4944 | struct alpha_elf_got_entry *gotent; | |
4945 | ||
4946 | BFD_ASSERT (h->dynindx != -1); | |
4947 | ||
4948 | /* The first .got entry will be updated by the .plt with the | |
4949 | address of the target function. */ | |
4950 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
4951 | BFD_ASSERT (gotent && gotent->addend == 0); | |
4952 | ||
4953 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4954 | BFD_ASSERT (splt != NULL); | |
4955 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4956 | BFD_ASSERT (srel != NULL); | |
4957 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
4958 | BFD_ASSERT (sgot != NULL); | |
4959 | ||
4960 | got_addr = (sgot->output_section->vma | |
4961 | + sgot->output_offset | |
4962 | + gotent->got_offset); | |
4963 | plt_addr = (splt->output_section->vma | |
4964 | + splt->output_offset | |
4965 | + h->plt.offset); | |
4966 | ||
4967 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
4968 | ||
4969 | /* Fill in the entry in the procedure linkage table. */ | |
4970 | { | |
dc810e39 | 4971 | bfd_vma insn1, insn2, insn3; |
252b5132 RH |
4972 | |
4973 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); | |
4974 | insn2 = PLT_ENTRY_WORD2; | |
4975 | insn3 = PLT_ENTRY_WORD3; | |
4976 | ||
4977 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); | |
4978 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); | |
4979 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); | |
4980 | } | |
4981 | ||
4982 | /* Fill in the entry in the .rela.plt section. */ | |
4983 | outrel.r_offset = got_addr; | |
4984 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4985 | outrel.r_addend = 0; | |
4986 | ||
947216bf AM |
4987 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4988 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
4989 | |
4990 | if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
4991 | { | |
4992 | /* Mark the symbol as undefined, rather than as defined in the | |
4993 | .plt section. Leave the value alone. */ | |
4994 | sym->st_shndx = SHN_UNDEF; | |
4995 | } | |
4996 | ||
4997 | /* Fill in the entries in the .got. */ | |
4998 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
4999 | ||
5000 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
5001 | if (gotent->next) | |
5002 | { | |
5003 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
5004 | BFD_ASSERT (! info->shared || srel != NULL); | |
5005 | ||
5006 | gotent = gotent->next; | |
5007 | do | |
5008 | { | |
5009 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
5010 | BFD_ASSERT(sgot != NULL); | |
5011 | BFD_ASSERT(gotent->addend == 0); | |
5012 | ||
5013 | bfd_put_64 (output_bfd, plt_addr, | |
5014 | sgot->contents + gotent->got_offset); | |
5015 | ||
5016 | if (info->shared) | |
1bbc9cec RH |
5017 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
5018 | gotent->got_offset, 0, | |
5019 | R_ALPHA_RELATIVE, plt_addr); | |
252b5132 RH |
5020 | |
5021 | gotent = gotent->next; | |
5022 | } | |
5023 | while (gotent != NULL); | |
5024 | } | |
5025 | } | |
5026 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
5027 | { | |
5028 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
5029 | asection *srel; | |
252b5132 RH |
5030 | struct alpha_elf_got_entry *gotent; |
5031 | ||
5032 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
5033 | BFD_ASSERT (srel != NULL); | |
5034 | ||
252b5132 RH |
5035 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
5036 | gotent != NULL; | |
5037 | gotent = gotent->next) | |
5038 | { | |
f44f99a5 | 5039 | asection *sgot; |
1bbc9cec | 5040 | long r_type; |
3765b1be | 5041 | |
f44f99a5 RH |
5042 | if (gotent->use_count == 0) |
5043 | continue; | |
5044 | ||
5045 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
5046 | |
5047 | r_type = gotent->reloc_type; | |
5048 | switch (r_type) | |
5049 | { | |
5050 | case R_ALPHA_LITERAL: | |
5051 | r_type = R_ALPHA_GLOB_DAT; | |
5052 | break; | |
5053 | case R_ALPHA_TLSGD: | |
5054 | r_type = R_ALPHA_DTPMOD64; | |
5055 | break; | |
5056 | case R_ALPHA_GOTDTPREL: | |
5057 | r_type = R_ALPHA_DTPREL64; | |
5058 | break; | |
5059 | case R_ALPHA_GOTTPREL: | |
5060 | r_type = R_ALPHA_TPREL64; | |
5061 | break; | |
5062 | case R_ALPHA_TLSLDM: | |
5063 | default: | |
5064 | abort (); | |
5065 | } | |
5066 | ||
1bbc9cec RH |
5067 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
5068 | gotent->got_offset, h->dynindx, | |
5069 | r_type, gotent->addend); | |
3765b1be RH |
5070 | |
5071 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
5072 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
5073 | gotent->got_offset + 8, h->dynindx, | |
5074 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
5075 | } |
5076 | } | |
5077 | ||
5078 | /* Mark some specially defined symbols as absolute. */ | |
5079 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5080 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
5081 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
5082 | sym->st_shndx = SHN_ABS; | |
5083 | ||
b34976b6 | 5084 | return TRUE; |
252b5132 RH |
5085 | } |
5086 | ||
5087 | /* Finish up the dynamic sections. */ | |
5088 | ||
b34976b6 | 5089 | static bfd_boolean |
252b5132 RH |
5090 | elf64_alpha_finish_dynamic_sections (output_bfd, info) |
5091 | bfd *output_bfd; | |
5092 | struct bfd_link_info *info; | |
5093 | { | |
5094 | bfd *dynobj; | |
5095 | asection *sdyn; | |
5096 | ||
5097 | dynobj = elf_hash_table (info)->dynobj; | |
5098 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
5099 | ||
5100 | if (elf_hash_table (info)->dynamic_sections_created) | |
5101 | { | |
5102 | asection *splt; | |
5103 | Elf64_External_Dyn *dyncon, *dynconend; | |
5104 | ||
5105 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
5106 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
5107 | ||
5108 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
5109 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
5110 | for (; dyncon < dynconend; dyncon++) | |
5111 | { | |
5112 | Elf_Internal_Dyn dyn; | |
5113 | const char *name; | |
5114 | asection *s; | |
5115 | ||
5116 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
5117 | ||
5118 | switch (dyn.d_tag) | |
5119 | { | |
5120 | case DT_PLTGOT: | |
5121 | name = ".plt"; | |
5122 | goto get_vma; | |
5123 | case DT_PLTRELSZ: | |
5124 | name = ".rela.plt"; | |
5125 | goto get_size; | |
5126 | case DT_JMPREL: | |
5127 | name = ".rela.plt"; | |
5128 | goto get_vma; | |
5129 | ||
5130 | case DT_RELASZ: | |
5131 | /* My interpretation of the TIS v1.1 ELF document indicates | |
5132 | that RELASZ should not include JMPREL. This is not what | |
5133 | the rest of the BFD does. It is, however, what the | |
5134 | glibc ld.so wants. Do this fixup here until we found | |
5135 | out who is right. */ | |
5136 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
5137 | if (s) | |
5138 | { | |
5139 | dyn.d_un.d_val -= | |
5140 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
5141 | } | |
5142 | break; | |
5143 | ||
5144 | get_vma: | |
5145 | s = bfd_get_section_by_name (output_bfd, name); | |
5146 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
5147 | break; | |
5148 | ||
5149 | get_size: | |
5150 | s = bfd_get_section_by_name (output_bfd, name); | |
5151 | dyn.d_un.d_val = | |
5152 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
5153 | break; | |
5154 | } | |
5155 | ||
5156 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5157 | } | |
5158 | ||
ae9a127f | 5159 | /* Initialize the PLT0 entry. */ |
252b5132 RH |
5160 | if (splt->_raw_size > 0) |
5161 | { | |
5162 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
5163 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
5164 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
5165 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
5166 | ||
5167 | /* The next two words will be filled in by ld.so */ | |
dc810e39 AM |
5168 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16); |
5169 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24); | |
252b5132 | 5170 | |
eecdbe52 | 5171 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
5172 | } |
5173 | } | |
5174 | ||
b34976b6 | 5175 | return TRUE; |
252b5132 RH |
5176 | } |
5177 | ||
96e2734b RH |
5178 | /* We need to use a special link routine to handle the .mdebug section. |
5179 | We need to merge all instances of these sections together, not write | |
5180 | them all out sequentially. */ | |
252b5132 | 5181 | |
b34976b6 | 5182 | static bfd_boolean |
252b5132 RH |
5183 | elf64_alpha_final_link (abfd, info) |
5184 | bfd *abfd; | |
5185 | struct bfd_link_info *info; | |
5186 | { | |
5187 | asection *o; | |
5188 | struct bfd_link_order *p; | |
96e2734b | 5189 | asection *mdebug_sec; |
252b5132 RH |
5190 | struct ecoff_debug_info debug; |
5191 | const struct ecoff_debug_swap *swap | |
5192 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
5193 | HDRR *symhdr = &debug.symbolic_header; | |
5194 | PTR mdebug_handle = NULL; | |
5195 | ||
96e2734b | 5196 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 5197 | mdebug_sec = NULL; |
252b5132 RH |
5198 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
5199 | { | |
252b5132 RH |
5200 | if (strcmp (o->name, ".mdebug") == 0) |
5201 | { | |
5202 | struct extsym_info einfo; | |
5203 | ||
5204 | /* We have found the .mdebug section in the output file. | |
5205 | Look through all the link_orders comprising it and merge | |
5206 | the information together. */ | |
5207 | symhdr->magic = swap->sym_magic; | |
5208 | /* FIXME: What should the version stamp be? */ | |
5209 | symhdr->vstamp = 0; | |
5210 | symhdr->ilineMax = 0; | |
5211 | symhdr->cbLine = 0; | |
5212 | symhdr->idnMax = 0; | |
5213 | symhdr->ipdMax = 0; | |
5214 | symhdr->isymMax = 0; | |
5215 | symhdr->ioptMax = 0; | |
5216 | symhdr->iauxMax = 0; | |
5217 | symhdr->issMax = 0; | |
5218 | symhdr->issExtMax = 0; | |
5219 | symhdr->ifdMax = 0; | |
5220 | symhdr->crfd = 0; | |
5221 | symhdr->iextMax = 0; | |
5222 | ||
5223 | /* We accumulate the debugging information itself in the | |
5224 | debug_info structure. */ | |
5225 | debug.line = NULL; | |
5226 | debug.external_dnr = NULL; | |
5227 | debug.external_pdr = NULL; | |
5228 | debug.external_sym = NULL; | |
5229 | debug.external_opt = NULL; | |
5230 | debug.external_aux = NULL; | |
5231 | debug.ss = NULL; | |
5232 | debug.ssext = debug.ssext_end = NULL; | |
5233 | debug.external_fdr = NULL; | |
5234 | debug.external_rfd = NULL; | |
5235 | debug.external_ext = debug.external_ext_end = NULL; | |
5236 | ||
5237 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
5238 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 5239 | return FALSE; |
252b5132 RH |
5240 | |
5241 | if (1) | |
5242 | { | |
5243 | asection *s; | |
5244 | EXTR esym; | |
52b9d213 | 5245 | bfd_vma last = 0; |
252b5132 RH |
5246 | unsigned int i; |
5247 | static const char * const name[] = | |
5248 | { | |
5249 | ".text", ".init", ".fini", ".data", | |
5250 | ".rodata", ".sdata", ".sbss", ".bss" | |
5251 | }; | |
5252 | static const int sc[] = { scText, scInit, scFini, scData, | |
5253 | scRData, scSData, scSBss, scBss }; | |
5254 | ||
5255 | esym.jmptbl = 0; | |
5256 | esym.cobol_main = 0; | |
5257 | esym.weakext = 0; | |
5258 | esym.reserved = 0; | |
5259 | esym.ifd = ifdNil; | |
5260 | esym.asym.iss = issNil; | |
5261 | esym.asym.st = stLocal; | |
5262 | esym.asym.reserved = 0; | |
5263 | esym.asym.index = indexNil; | |
5264 | for (i = 0; i < 8; i++) | |
5265 | { | |
5266 | esym.asym.sc = sc[i]; | |
5267 | s = bfd_get_section_by_name (abfd, name[i]); | |
5268 | if (s != NULL) | |
5269 | { | |
5270 | esym.asym.value = s->vma; | |
5271 | last = s->vma + s->_raw_size; | |
5272 | } | |
5273 | else | |
5274 | esym.asym.value = last; | |
5275 | ||
5276 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5277 | name[i], &esym)) | |
b34976b6 | 5278 | return FALSE; |
252b5132 RH |
5279 | } |
5280 | } | |
5281 | ||
5282 | for (p = o->link_order_head; | |
5283 | p != (struct bfd_link_order *) NULL; | |
5284 | p = p->next) | |
5285 | { | |
5286 | asection *input_section; | |
5287 | bfd *input_bfd; | |
5288 | const struct ecoff_debug_swap *input_swap; | |
5289 | struct ecoff_debug_info input_debug; | |
5290 | char *eraw_src; | |
5291 | char *eraw_end; | |
5292 | ||
5293 | if (p->type != bfd_indirect_link_order) | |
5294 | { | |
fd96f80f | 5295 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5296 | continue; |
5297 | abort (); | |
5298 | } | |
5299 | ||
5300 | input_section = p->u.indirect.section; | |
5301 | input_bfd = input_section->owner; | |
5302 | ||
5303 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
5304 | || (get_elf_backend_data (input_bfd) | |
5305 | ->elf_backend_ecoff_debug_swap) == NULL) | |
5306 | { | |
5307 | /* I don't know what a non ALPHA ELF bfd would be | |
5308 | doing with a .mdebug section, but I don't really | |
5309 | want to deal with it. */ | |
5310 | continue; | |
5311 | } | |
5312 | ||
5313 | input_swap = (get_elf_backend_data (input_bfd) | |
5314 | ->elf_backend_ecoff_debug_swap); | |
5315 | ||
5316 | BFD_ASSERT (p->size == input_section->_raw_size); | |
5317 | ||
5318 | /* The ECOFF linking code expects that we have already | |
5319 | read in the debugging information and set up an | |
5320 | ecoff_debug_info structure, so we do that now. */ | |
5321 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5322 | &input_debug)) | |
b34976b6 | 5323 | return FALSE; |
252b5132 RH |
5324 | |
5325 | if (! (bfd_ecoff_debug_accumulate | |
5326 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5327 | &input_debug, input_swap, info))) | |
b34976b6 | 5328 | return FALSE; |
252b5132 RH |
5329 | |
5330 | /* Loop through the external symbols. For each one with | |
5331 | interesting information, try to find the symbol in | |
5332 | the linker global hash table and save the information | |
5333 | for the output external symbols. */ | |
5334 | eraw_src = input_debug.external_ext; | |
5335 | eraw_end = (eraw_src | |
5336 | + (input_debug.symbolic_header.iextMax | |
5337 | * input_swap->external_ext_size)); | |
5338 | for (; | |
5339 | eraw_src < eraw_end; | |
5340 | eraw_src += input_swap->external_ext_size) | |
5341 | { | |
5342 | EXTR ext; | |
5343 | const char *name; | |
5344 | struct alpha_elf_link_hash_entry *h; | |
5345 | ||
5346 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5347 | if (ext.asym.sc == scNil | |
5348 | || ext.asym.sc == scUndefined | |
5349 | || ext.asym.sc == scSUndefined) | |
5350 | continue; | |
5351 | ||
5352 | name = input_debug.ssext + ext.asym.iss; | |
5353 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5354 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5355 | if (h == NULL || h->esym.ifd != -2) |
5356 | continue; | |
5357 | ||
5358 | if (ext.ifd != -1) | |
5359 | { | |
5360 | BFD_ASSERT (ext.ifd | |
5361 | < input_debug.symbolic_header.ifdMax); | |
5362 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5363 | } | |
5364 | ||
5365 | h->esym = ext; | |
5366 | } | |
5367 | ||
5368 | /* Free up the information we just read. */ | |
5369 | free (input_debug.line); | |
5370 | free (input_debug.external_dnr); | |
5371 | free (input_debug.external_pdr); | |
5372 | free (input_debug.external_sym); | |
5373 | free (input_debug.external_opt); | |
5374 | free (input_debug.external_aux); | |
5375 | free (input_debug.ss); | |
5376 | free (input_debug.ssext); | |
5377 | free (input_debug.external_fdr); | |
5378 | free (input_debug.external_rfd); | |
5379 | free (input_debug.external_ext); | |
5380 | ||
5381 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5382 | elf_link_input_bfd ignores this section. */ | |
5383 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5384 | } | |
5385 | ||
252b5132 RH |
5386 | /* Build the external symbol information. */ |
5387 | einfo.abfd = abfd; | |
5388 | einfo.info = info; | |
5389 | einfo.debug = &debug; | |
5390 | einfo.swap = swap; | |
b34976b6 | 5391 | einfo.failed = FALSE; |
252b5132 RH |
5392 | elf_link_hash_traverse (elf_hash_table (info), |
5393 | elf64_alpha_output_extsym, | |
5394 | (PTR) &einfo); | |
5395 | if (einfo.failed) | |
b34976b6 | 5396 | return FALSE; |
252b5132 RH |
5397 | |
5398 | /* Set the size of the .mdebug section. */ | |
5399 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
5400 | ||
5401 | /* Skip this section later on (I don't think this currently | |
5402 | matters, but someday it might). */ | |
5403 | o->link_order_head = (struct bfd_link_order *) NULL; | |
5404 | ||
5405 | mdebug_sec = o; | |
5406 | } | |
252b5132 RH |
5407 | } |
5408 | ||
5409 | /* Invoke the regular ELF backend linker to do all the work. */ | |
5410 | if (! bfd_elf64_bfd_final_link (abfd, info)) | |
b34976b6 | 5411 | return FALSE; |
252b5132 RH |
5412 | |
5413 | /* Now write out the computed sections. */ | |
5414 | ||
5415 | /* The .got subsections... */ | |
5416 | { | |
5417 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5418 | for (i = alpha_elf_hash_table(info)->got_list; | |
5419 | i != NULL; | |
5420 | i = alpha_elf_tdata(i)->got_link_next) | |
5421 | { | |
5422 | asection *sgot; | |
5423 | ||
5424 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5425 | if (i == dynobj) | |
5426 | continue; | |
5427 | ||
5428 | sgot = alpha_elf_tdata(i)->got; | |
5429 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5430 | sgot->contents, |
5431 | (file_ptr) sgot->output_offset, | |
252b5132 | 5432 | sgot->_raw_size)) |
b34976b6 | 5433 | return FALSE; |
252b5132 RH |
5434 | } |
5435 | } | |
5436 | ||
252b5132 RH |
5437 | if (mdebug_sec != (asection *) NULL) |
5438 | { | |
5439 | BFD_ASSERT (abfd->output_has_begun); | |
5440 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5441 | swap, info, | |
5442 | mdebug_sec->filepos)) | |
b34976b6 | 5443 | return FALSE; |
252b5132 RH |
5444 | |
5445 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5446 | } | |
5447 | ||
b34976b6 | 5448 | return TRUE; |
252b5132 | 5449 | } |
fcfbdf31 JJ |
5450 | |
5451 | static enum elf_reloc_type_class | |
f51e552e AM |
5452 | elf64_alpha_reloc_type_class (rela) |
5453 | const Elf_Internal_Rela *rela; | |
fcfbdf31 | 5454 | { |
f51e552e | 5455 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5456 | { |
5457 | case R_ALPHA_RELATIVE: | |
5458 | return reloc_class_relative; | |
5459 | case R_ALPHA_JMP_SLOT: | |
5460 | return reloc_class_plt; | |
5461 | case R_ALPHA_COPY: | |
5462 | return reloc_class_copy; | |
5463 | default: | |
5464 | return reloc_class_normal; | |
5465 | } | |
5466 | } | |
252b5132 | 5467 | \f |
2f89ff8d L |
5468 | static struct bfd_elf_special_section const elf64_alpha_special_sections[]= |
5469 | { | |
5470 | { ".sdata", 0, NULL, 0, | |
5471 | SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5472 | { ".sbss", 0, NULL, 0, | |
5473 | SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5474 | { NULL, 0, NULL, 0, | |
5475 | 0, 0 } | |
5476 | }; | |
5477 | ||
252b5132 RH |
5478 | /* ECOFF swapping routines. These are used when dealing with the |
5479 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5480 | from elf32-mips.c. */ |
252b5132 RH |
5481 | static const struct ecoff_debug_swap |
5482 | elf64_alpha_ecoff_debug_swap = | |
5483 | { | |
5484 | /* Symbol table magic number. */ | |
5485 | magicSym2, | |
5486 | /* Alignment of debugging information. E.g., 4. */ | |
5487 | 8, | |
5488 | /* Sizes of external symbolic information. */ | |
5489 | sizeof (struct hdr_ext), | |
5490 | sizeof (struct dnr_ext), | |
5491 | sizeof (struct pdr_ext), | |
5492 | sizeof (struct sym_ext), | |
5493 | sizeof (struct opt_ext), | |
5494 | sizeof (struct fdr_ext), | |
5495 | sizeof (struct rfd_ext), | |
5496 | sizeof (struct ext_ext), | |
5497 | /* Functions to swap in external symbolic data. */ | |
5498 | ecoff_swap_hdr_in, | |
5499 | ecoff_swap_dnr_in, | |
5500 | ecoff_swap_pdr_in, | |
5501 | ecoff_swap_sym_in, | |
5502 | ecoff_swap_opt_in, | |
5503 | ecoff_swap_fdr_in, | |
5504 | ecoff_swap_rfd_in, | |
5505 | ecoff_swap_ext_in, | |
5506 | _bfd_ecoff_swap_tir_in, | |
5507 | _bfd_ecoff_swap_rndx_in, | |
5508 | /* Functions to swap out external symbolic data. */ | |
5509 | ecoff_swap_hdr_out, | |
5510 | ecoff_swap_dnr_out, | |
5511 | ecoff_swap_pdr_out, | |
5512 | ecoff_swap_sym_out, | |
5513 | ecoff_swap_opt_out, | |
5514 | ecoff_swap_fdr_out, | |
5515 | ecoff_swap_rfd_out, | |
5516 | ecoff_swap_ext_out, | |
5517 | _bfd_ecoff_swap_tir_out, | |
5518 | _bfd_ecoff_swap_rndx_out, | |
5519 | /* Function to read in symbolic data. */ | |
5520 | elf64_alpha_read_ecoff_info | |
5521 | }; | |
5522 | \f | |
70bcb145 JW |
5523 | /* Use a non-standard hash bucket size of 8. */ |
5524 | ||
562ace6b | 5525 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5526 | { |
5527 | sizeof (Elf64_External_Ehdr), | |
5528 | sizeof (Elf64_External_Phdr), | |
5529 | sizeof (Elf64_External_Shdr), | |
5530 | sizeof (Elf64_External_Rel), | |
5531 | sizeof (Elf64_External_Rela), | |
5532 | sizeof (Elf64_External_Sym), | |
5533 | sizeof (Elf64_External_Dyn), | |
5534 | sizeof (Elf_External_Note), | |
5535 | 8, | |
5536 | 1, | |
45d6a902 | 5537 | 64, 3, |
70bcb145 JW |
5538 | ELFCLASS64, EV_CURRENT, |
5539 | bfd_elf64_write_out_phdrs, | |
5540 | bfd_elf64_write_shdrs_and_ehdr, | |
5541 | bfd_elf64_write_relocs, | |
73ff0d56 | 5542 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5543 | bfd_elf64_swap_symbol_out, |
5544 | bfd_elf64_slurp_reloc_table, | |
5545 | bfd_elf64_slurp_symbol_table, | |
5546 | bfd_elf64_swap_dyn_in, | |
5547 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5548 | bfd_elf64_swap_reloc_in, |
5549 | bfd_elf64_swap_reloc_out, | |
5550 | bfd_elf64_swap_reloca_in, | |
5551 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5552 | }; |
5553 | ||
252b5132 RH |
5554 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5555 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5556 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5557 | #define ELF_MACHINE_CODE EM_ALPHA |
5558 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5559 | |
5560 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5561 | elf64_alpha_bfd_link_hash_table_create | |
5562 | ||
5563 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5564 | elf64_alpha_bfd_reloc_type_lookup | |
5565 | #define elf_info_to_howto \ | |
5566 | elf64_alpha_info_to_howto | |
5567 | ||
5568 | #define bfd_elf64_mkobject \ | |
5569 | elf64_alpha_mkobject | |
5570 | #define elf_backend_object_p \ | |
5571 | elf64_alpha_object_p | |
5572 | ||
5573 | #define elf_backend_section_from_shdr \ | |
5574 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5575 | #define elf_backend_section_flags \ |
5576 | elf64_alpha_section_flags | |
252b5132 RH |
5577 | #define elf_backend_fake_sections \ |
5578 | elf64_alpha_fake_sections | |
5579 | ||
5580 | #define bfd_elf64_bfd_is_local_label_name \ | |
5581 | elf64_alpha_is_local_label_name | |
5582 | #define bfd_elf64_find_nearest_line \ | |
5583 | elf64_alpha_find_nearest_line | |
5584 | #define bfd_elf64_bfd_relax_section \ | |
5585 | elf64_alpha_relax_section | |
5586 | ||
5587 | #define elf_backend_add_symbol_hook \ | |
5588 | elf64_alpha_add_symbol_hook | |
5589 | #define elf_backend_check_relocs \ | |
5590 | elf64_alpha_check_relocs | |
5591 | #define elf_backend_create_dynamic_sections \ | |
5592 | elf64_alpha_create_dynamic_sections | |
5593 | #define elf_backend_adjust_dynamic_symbol \ | |
5594 | elf64_alpha_adjust_dynamic_symbol | |
5595 | #define elf_backend_always_size_sections \ | |
5596 | elf64_alpha_always_size_sections | |
5597 | #define elf_backend_size_dynamic_sections \ | |
5598 | elf64_alpha_size_dynamic_sections | |
5599 | #define elf_backend_relocate_section \ | |
5600 | elf64_alpha_relocate_section | |
5601 | #define elf_backend_finish_dynamic_symbol \ | |
5602 | elf64_alpha_finish_dynamic_symbol | |
5603 | #define elf_backend_finish_dynamic_sections \ | |
5604 | elf64_alpha_finish_dynamic_sections | |
5605 | #define bfd_elf64_bfd_final_link \ | |
5606 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5607 | #define elf_backend_reloc_type_class \ |
5608 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5609 | |
5610 | #define elf_backend_ecoff_debug_swap \ | |
5611 | &elf64_alpha_ecoff_debug_swap | |
5612 | ||
70bcb145 JW |
5613 | #define elf_backend_size_info \ |
5614 | alpha_elf_size_info | |
5615 | ||
2f89ff8d L |
5616 | #define elf_backend_special_sections \ |
5617 | elf64_alpha_special_sections | |
5618 | ||
38b1a46c | 5619 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5620 | #define elf_backend_want_got_plt 0 |
5621 | #define elf_backend_plt_readonly 0 | |
5622 | #define elf_backend_want_plt_sym 1 | |
5623 | #define elf_backend_got_header_size 0 | |
5624 | #define elf_backend_plt_header_size PLT_HEADER_SIZE | |
5625 | ||
5626 | #include "elf64-target.h" | |
2238051f RH |
5627 | \f |
5628 | /* FreeBSD support. */ | |
5629 | ||
5630 | #undef TARGET_LITTLE_SYM | |
5631 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5632 | #undef TARGET_LITTLE_NAME | |
5633 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5634 | ||
5635 | /* The kernel recognizes executables as valid only if they carry a | |
5636 | "FreeBSD" label in the ELF header. So we put this label on all | |
5637 | executables and (for simplicity) also all other object files. */ | |
5638 | ||
5639 | static void elf64_alpha_fbsd_post_process_headers | |
5640 | PARAMS ((bfd *, struct bfd_link_info *)); | |
5641 | ||
5642 | static void | |
5643 | elf64_alpha_fbsd_post_process_headers (abfd, link_info) | |
5644 | bfd * abfd; | |
5645 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
5646 | { | |
5647 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5648 | ||
5649 | i_ehdrp = elf_elfheader (abfd); | |
5650 | ||
5651 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5652 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5653 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5654 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5655 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5656 | #endif | |
5657 | } | |
5658 | ||
5659 | #undef elf_backend_post_process_headers | |
5660 | #define elf_backend_post_process_headers \ | |
5661 | elf64_alpha_fbsd_post_process_headers | |
5662 | ||
571fe01f | 5663 | #undef elf64_bed |
2238051f RH |
5664 | #define elf64_bed elf64_alpha_fbsd_bed |
5665 | ||
5666 | #include "elf64-target.h" |