Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
77cfaee6 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
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 | |
3e110533 | 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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_flags |
1829f4b2 | 76 | PARAMS ((flagword *, const Elf_Internal_Shdr *)); |
b34976b6 | 77 | static bfd_boolean elf64_alpha_fake_sections |
571fe01f | 78 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
b34976b6 | 79 | static bfd_boolean elf64_alpha_create_got_section |
571fe01f | 80 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 81 | static bfd_boolean elf64_alpha_create_dynamic_sections |
571fe01f | 82 | PARAMS ((bfd *, struct bfd_link_info *)); |
252b5132 | 83 | |
b34976b6 | 84 | static bfd_boolean elf64_alpha_read_ecoff_info |
571fe01f | 85 | PARAMS ((bfd *, asection *, struct ecoff_debug_info *)); |
b34976b6 | 86 | static bfd_boolean elf64_alpha_is_local_label_name |
571fe01f | 87 | PARAMS ((bfd *, const char *)); |
b34976b6 | 88 | static bfd_boolean elf64_alpha_find_nearest_line |
571fe01f NC |
89 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, |
90 | const char **, unsigned int *)); | |
252b5132 RH |
91 | |
92 | #if defined(__STDC__) || defined(ALMOST_STDC) | |
93 | struct alpha_elf_link_hash_entry; | |
94 | #endif | |
95 | ||
b34976b6 | 96 | static bfd_boolean elf64_alpha_output_extsym |
571fe01f | 97 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
252b5132 | 98 | |
b34976b6 | 99 | static bfd_boolean elf64_alpha_can_merge_gots |
571fe01f | 100 | PARAMS ((bfd *, bfd *)); |
252b5132 | 101 | static void elf64_alpha_merge_gots |
571fe01f | 102 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 103 | static bfd_boolean elf64_alpha_calc_got_offsets_for_symbol |
252b5132 | 104 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
b34976b6 | 105 | static void elf64_alpha_calc_got_offsets |
f44f99a5 | 106 | PARAMS ((struct bfd_link_info *)); |
b34976b6 | 107 | static bfd_boolean elf64_alpha_size_got_sections |
f44f99a5 | 108 | PARAMS ((struct bfd_link_info *)); |
b34976b6 AM |
109 | static bfd_boolean elf64_alpha_size_plt_section |
110 | PARAMS ((struct bfd_link_info *)); | |
111 | static bfd_boolean elf64_alpha_size_plt_section_1 | |
f44f99a5 | 112 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
b34976b6 | 113 | static bfd_boolean elf64_alpha_always_size_sections |
252b5132 | 114 | PARAMS ((bfd *, struct bfd_link_info *)); |
3765b1be RH |
115 | static int alpha_dynamic_entries_for_reloc |
116 | PARAMS ((int, int, int)); | |
b34976b6 | 117 | static bfd_boolean elf64_alpha_calc_dynrel_sizes |
252b5132 | 118 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); |
b34976b6 | 119 | static bfd_boolean elf64_alpha_size_rela_got_section |
f44f99a5 | 120 | PARAMS ((struct bfd_link_info *)); |
b34976b6 | 121 | static bfd_boolean elf64_alpha_size_rela_got_1 |
f44f99a5 | 122 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); |
b34976b6 | 123 | static bfd_boolean elf64_alpha_add_symbol_hook |
555cd476 | 124 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *, |
252b5132 | 125 | const char **, flagword *, asection **, bfd_vma *)); |
3765b1be RH |
126 | static struct alpha_elf_got_entry *get_got_entry |
127 | PARAMS ((bfd *, struct alpha_elf_link_hash_entry *, unsigned long, | |
128 | unsigned long, bfd_vma)); | |
b34976b6 | 129 | static bfd_boolean elf64_alpha_check_relocs |
571fe01f | 130 | PARAMS ((bfd *, struct bfd_link_info *, asection *sec, |
252b5132 | 131 | const Elf_Internal_Rela *)); |
b34976b6 | 132 | static bfd_boolean elf64_alpha_adjust_dynamic_symbol |
571fe01f | 133 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 134 | static bfd_boolean elf64_alpha_size_dynamic_sections |
571fe01f | 135 | PARAMS ((bfd *, struct bfd_link_info *)); |
1bbc9cec RH |
136 | static void elf64_alpha_emit_dynrel |
137 | PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, | |
138 | bfd_vma, long, long, bfd_vma)); | |
b34976b6 | 139 | static bfd_boolean elf64_alpha_relocate_section_r |
571fe01f NC |
140 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
141 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 142 | static bfd_boolean elf64_alpha_relocate_section |
571fe01f | 143 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
252b5132 | 144 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
b34976b6 | 145 | static bfd_boolean elf64_alpha_finish_dynamic_symbol |
571fe01f NC |
146 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
147 | Elf_Internal_Sym *)); | |
b34976b6 | 148 | static bfd_boolean elf64_alpha_finish_dynamic_sections |
571fe01f | 149 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 150 | static bfd_boolean elf64_alpha_final_link |
571fe01f | 151 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 152 | static bfd_boolean elf64_alpha_merge_ind_symbols |
571fe01f | 153 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
cd6f9321 L |
154 | static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs |
155 | PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int)); | |
fcfbdf31 | 156 | static enum elf_reloc_type_class elf64_alpha_reloc_type_class |
f51e552e | 157 | PARAMS ((const Elf_Internal_Rela *)); |
252b5132 RH |
158 | \f |
159 | struct alpha_elf_link_hash_entry | |
160 | { | |
161 | struct elf_link_hash_entry root; | |
162 | ||
163 | /* External symbol information. */ | |
164 | EXTR esym; | |
165 | ||
166 | /* Cumulative flags for all the .got entries. */ | |
167 | int flags; | |
168 | ||
9e756d64 | 169 | /* Contexts in which a literal was referenced. */ |
3765b1be RH |
170 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
171 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
172 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
173 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
174 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
175 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
176 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38 | |
9e756d64 | 177 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x40 |
cc03ec80 RH |
178 | #define ALPHA_ELF_LINK_HASH_PLT_LOC 0x80 |
179 | ||
180 | /* Used to undo the localization of a plt symbol. */ | |
181 | asection *plt_old_section; | |
182 | bfd_vma plt_old_value; | |
252b5132 RH |
183 | |
184 | /* Used to implement multiple .got subsections. */ | |
185 | struct alpha_elf_got_entry | |
186 | { | |
187 | struct alpha_elf_got_entry *next; | |
188 | ||
571fe01f | 189 | /* Which .got subsection? */ |
252b5132 RH |
190 | bfd *gotobj; |
191 | ||
571fe01f | 192 | /* The addend in effect for this entry. */ |
dc810e39 | 193 | bfd_vma addend; |
252b5132 | 194 | |
571fe01f | 195 | /* The .got offset for this entry. */ |
252b5132 RH |
196 | int got_offset; |
197 | ||
3765b1be RH |
198 | /* How many references to this entry? */ |
199 | int use_count; | |
252b5132 | 200 | |
3765b1be RH |
201 | /* The relocation type of this entry. */ |
202 | unsigned char reloc_type; | |
252b5132 | 203 | |
3765b1be RH |
204 | /* How a LITERAL is used. */ |
205 | unsigned char flags; | |
206 | ||
207 | /* Have we initialized the dynamic relocation for this entry? */ | |
208 | unsigned char reloc_done; | |
209 | ||
210 | /* Have we adjusted this entry for SEC_MERGE? */ | |
211 | unsigned char reloc_xlated; | |
252b5132 RH |
212 | } *got_entries; |
213 | ||
571fe01f | 214 | /* Used to count non-got, non-plt relocations for delayed sizing |
252b5132 RH |
215 | of relocation sections. */ |
216 | struct alpha_elf_reloc_entry | |
217 | { | |
218 | struct alpha_elf_reloc_entry *next; | |
219 | ||
571fe01f | 220 | /* Which .reloc section? */ |
252b5132 RH |
221 | asection *srel; |
222 | ||
571fe01f | 223 | /* What kind of relocation? */ |
fcfbdf31 JJ |
224 | unsigned int rtype; |
225 | ||
571fe01f | 226 | /* Is this against read-only section? */ |
fcfbdf31 | 227 | unsigned int reltext : 1; |
252b5132 | 228 | |
571fe01f | 229 | /* How many did we find? */ |
252b5132 RH |
230 | unsigned long count; |
231 | } *reloc_entries; | |
232 | }; | |
233 | ||
234 | /* Alpha ELF linker hash table. */ | |
235 | ||
236 | struct alpha_elf_link_hash_table | |
237 | { | |
238 | struct elf_link_hash_table root; | |
239 | ||
240 | /* The head of a list of .got subsections linked through | |
241 | alpha_elf_tdata(abfd)->got_link_next. */ | |
242 | bfd *got_list; | |
243 | }; | |
244 | ||
245 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
246 | ||
247 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
248 | ((struct alpha_elf_link_hash_entry *) \ | |
249 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
250 | (copy), (follow))) | |
251 | ||
252 | /* Traverse a Alpha ELF linker hash table. */ | |
253 | ||
254 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
255 | (elf_link_hash_traverse \ | |
256 | (&(table)->root, \ | |
b34976b6 | 257 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
252b5132 RH |
258 | (info))) |
259 | ||
260 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
261 | ||
262 | #define alpha_elf_hash_table(p) \ | |
263 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
264 | ||
265 | /* Get the object's symbols as our own entry type. */ | |
266 | ||
267 | #define alpha_elf_sym_hashes(abfd) \ | |
268 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
269 | ||
986a241f RH |
270 | /* Should we do dynamic things to this symbol? This differs from the |
271 | generic version in that we never need to consider function pointer | |
272 | equality wrt PLT entries -- we don't create a PLT entry if a symbol's | |
273 | address is ever taken. */ | |
252b5132 | 274 | |
986a241f | 275 | static inline bfd_boolean |
8fb35fed RH |
276 | alpha_elf_dynamic_symbol_p (h, info) |
277 | struct elf_link_hash_entry *h; | |
278 | struct bfd_link_info *info; | |
279 | { | |
986a241f | 280 | return _bfd_elf_dynamic_symbol_p (h, info, 0); |
8fb35fed | 281 | } |
252b5132 RH |
282 | |
283 | /* Create an entry in a Alpha ELF linker hash table. */ | |
284 | ||
285 | static struct bfd_hash_entry * | |
286 | elf64_alpha_link_hash_newfunc (entry, table, string) | |
287 | struct bfd_hash_entry *entry; | |
288 | struct bfd_hash_table *table; | |
289 | const char *string; | |
290 | { | |
291 | struct alpha_elf_link_hash_entry *ret = | |
292 | (struct alpha_elf_link_hash_entry *) entry; | |
293 | ||
294 | /* Allocate the structure if it has not already been allocated by a | |
295 | subclass. */ | |
296 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
297 | ret = ((struct alpha_elf_link_hash_entry *) | |
298 | bfd_hash_allocate (table, | |
299 | sizeof (struct alpha_elf_link_hash_entry))); | |
300 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
301 | return (struct bfd_hash_entry *) ret; | |
302 | ||
303 | /* Call the allocation method of the superclass. */ | |
304 | ret = ((struct alpha_elf_link_hash_entry *) | |
305 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
306 | table, string)); | |
307 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
308 | { | |
309 | /* Set local fields. */ | |
310 | memset (&ret->esym, 0, sizeof (EXTR)); | |
311 | /* We use -2 as a marker to indicate that the information has | |
312 | not been set. -1 means there is no associated ifd. */ | |
313 | ret->esym.ifd = -2; | |
314 | ret->flags = 0; | |
315 | ret->got_entries = NULL; | |
316 | ret->reloc_entries = NULL; | |
317 | } | |
318 | ||
319 | return (struct bfd_hash_entry *) ret; | |
320 | } | |
321 | ||
322 | /* Create a Alpha ELF linker hash table. */ | |
323 | ||
324 | static struct bfd_link_hash_table * | |
325 | elf64_alpha_bfd_link_hash_table_create (abfd) | |
326 | bfd *abfd; | |
327 | { | |
328 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 329 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 330 | |
e2d34d7d | 331 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
332 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
333 | return NULL; | |
334 | ||
335 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
336 | elf64_alpha_link_hash_newfunc)) | |
337 | { | |
e2d34d7d | 338 | free (ret); |
252b5132 RH |
339 | return NULL; |
340 | } | |
341 | ||
342 | return &ret->root.root; | |
343 | } | |
344 | \f | |
345 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
346 | ||
347 | struct alpha_elf_obj_tdata | |
348 | { | |
349 | struct elf_obj_tdata root; | |
350 | ||
351 | /* For every input file, these are the got entries for that object's | |
352 | local symbols. */ | |
353 | struct alpha_elf_got_entry ** local_got_entries; | |
354 | ||
355 | /* For every input file, this is the object that owns the got that | |
356 | this input file uses. */ | |
357 | bfd *gotobj; | |
358 | ||
359 | /* For every got, this is a linked list through the objects using this got */ | |
360 | bfd *in_got_link_next; | |
361 | ||
362 | /* For every got, this is a link to the next got subsegment. */ | |
363 | bfd *got_link_next; | |
364 | ||
365 | /* For every got, this is the section. */ | |
366 | asection *got; | |
367 | ||
3765b1be RH |
368 | /* For every got, this is it's total number of words. */ |
369 | int total_got_size; | |
252b5132 | 370 | |
3765b1be | 371 | /* For every got, this is the sum of the number of words required |
252b5132 | 372 | to hold all of the member object's local got. */ |
3765b1be | 373 | int local_got_size; |
252b5132 RH |
374 | }; |
375 | ||
376 | #define alpha_elf_tdata(abfd) \ | |
377 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
378 | ||
b34976b6 | 379 | static bfd_boolean |
252b5132 RH |
380 | elf64_alpha_mkobject (abfd) |
381 | bfd *abfd; | |
382 | { | |
dc810e39 AM |
383 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
384 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 | 385 | if (abfd->tdata.any == NULL) |
b34976b6 AM |
386 | return FALSE; |
387 | return TRUE; | |
252b5132 RH |
388 | } |
389 | ||
b34976b6 | 390 | static bfd_boolean |
252b5132 RH |
391 | elf64_alpha_object_p (abfd) |
392 | bfd *abfd; | |
393 | { | |
252b5132 RH |
394 | /* Set the right machine number for an Alpha ELF file. */ |
395 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
396 | } | |
397 | \f | |
398 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
399 | from smaller values. Start with zero, widen, *then* decrement. */ | |
400 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
401 | ||
dfe57ca0 RH |
402 | #define SKIP_HOWTO(N) \ |
403 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
404 | ||
252b5132 RH |
405 | static reloc_howto_type elf64_alpha_howto_table[] = |
406 | { | |
407 | HOWTO (R_ALPHA_NONE, /* type */ | |
408 | 0, /* rightshift */ | |
409 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
410 | 8, /* bitsize */ | |
b34976b6 | 411 | TRUE, /* pc_relative */ |
252b5132 RH |
412 | 0, /* bitpos */ |
413 | complain_overflow_dont, /* complain_on_overflow */ | |
414 | elf64_alpha_reloc_nil, /* special_function */ | |
415 | "NONE", /* name */ | |
b34976b6 | 416 | FALSE, /* partial_inplace */ |
252b5132 RH |
417 | 0, /* src_mask */ |
418 | 0, /* dst_mask */ | |
b34976b6 | 419 | TRUE), /* pcrel_offset */ |
252b5132 RH |
420 | |
421 | /* A 32 bit reference to a symbol. */ | |
422 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 32, /* bitsize */ | |
b34976b6 | 426 | FALSE, /* pc_relative */ |
252b5132 RH |
427 | 0, /* bitpos */ |
428 | complain_overflow_bitfield, /* complain_on_overflow */ | |
429 | 0, /* special_function */ | |
430 | "REFLONG", /* name */ | |
b34976b6 | 431 | FALSE, /* partial_inplace */ |
252b5132 RH |
432 | 0xffffffff, /* src_mask */ |
433 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 434 | FALSE), /* pcrel_offset */ |
252b5132 RH |
435 | |
436 | /* A 64 bit reference to a symbol. */ | |
437 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
438 | 0, /* rightshift */ | |
439 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
440 | 64, /* bitsize */ | |
b34976b6 | 441 | FALSE, /* pc_relative */ |
252b5132 RH |
442 | 0, /* bitpos */ |
443 | complain_overflow_bitfield, /* complain_on_overflow */ | |
444 | 0, /* special_function */ | |
445 | "REFQUAD", /* name */ | |
b34976b6 | 446 | FALSE, /* partial_inplace */ |
252b5132 RH |
447 | MINUS_ONE, /* src_mask */ |
448 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 449 | FALSE), /* pcrel_offset */ |
252b5132 RH |
450 | |
451 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
452 | that when the value is used the value of the gp register will be | |
453 | added in. */ | |
454 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
455 | 0, /* rightshift */ | |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 32, /* bitsize */ | |
b34976b6 | 458 | FALSE, /* pc_relative */ |
252b5132 RH |
459 | 0, /* bitpos */ |
460 | complain_overflow_bitfield, /* complain_on_overflow */ | |
461 | 0, /* special_function */ | |
462 | "GPREL32", /* name */ | |
b34976b6 | 463 | FALSE, /* partial_inplace */ |
252b5132 RH |
464 | 0xffffffff, /* src_mask */ |
465 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 466 | FALSE), /* pcrel_offset */ |
252b5132 RH |
467 | |
468 | /* Used for an instruction that refers to memory off the GP register. */ | |
469 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
470 | 0, /* rightshift */ | |
dfe57ca0 | 471 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 472 | 16, /* bitsize */ |
b34976b6 | 473 | FALSE, /* pc_relative */ |
252b5132 RH |
474 | 0, /* bitpos */ |
475 | complain_overflow_signed, /* complain_on_overflow */ | |
476 | 0, /* special_function */ | |
477 | "ELF_LITERAL", /* name */ | |
b34976b6 | 478 | FALSE, /* partial_inplace */ |
252b5132 RH |
479 | 0xffff, /* src_mask */ |
480 | 0xffff, /* dst_mask */ | |
b34976b6 | 481 | FALSE), /* pcrel_offset */ |
252b5132 RH |
482 | |
483 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
484 | It identifies a use of the literal. The symbol index is special: | |
485 | 1 means the literal address is in the base register of a memory | |
486 | format instruction; 2 means the literal address is in the byte | |
487 | offset register of a byte-manipulation instruction; 3 means the | |
488 | literal address is in the target register of a jsr instruction. | |
489 | This does not actually do any relocation. */ | |
490 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
491 | 0, /* rightshift */ | |
dfe57ca0 | 492 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 493 | 32, /* bitsize */ |
b34976b6 | 494 | FALSE, /* pc_relative */ |
252b5132 RH |
495 | 0, /* bitpos */ |
496 | complain_overflow_dont, /* complain_on_overflow */ | |
497 | elf64_alpha_reloc_nil, /* special_function */ | |
498 | "LITUSE", /* name */ | |
b34976b6 | 499 | FALSE, /* partial_inplace */ |
252b5132 RH |
500 | 0, /* src_mask */ |
501 | 0, /* dst_mask */ | |
b34976b6 | 502 | FALSE), /* pcrel_offset */ |
252b5132 RH |
503 | |
504 | /* Load the gp register. This is always used for a ldah instruction | |
505 | which loads the upper 16 bits of the gp register. The symbol | |
506 | index of the GPDISP instruction is an offset in bytes to the lda | |
507 | instruction that loads the lower 16 bits. The value to use for | |
508 | the relocation is the difference between the GP value and the | |
509 | current location; the load will always be done against a register | |
510 | holding the current address. | |
511 | ||
512 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
513 | any offset is present in the instructions, it is an offset from | |
514 | the register to the ldah instruction. This lets us avoid any | |
515 | stupid hackery like inventing a gp value to do partial relocation | |
516 | against. Also unlike ECOFF, we do the whole relocation off of | |
517 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
518 | space consuming bit, that, since all the information was present | |
519 | in the GPDISP_HI16 reloc. */ | |
520 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
521 | 16, /* rightshift */ | |
522 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
523 | 16, /* bitsize */ | |
b34976b6 | 524 | FALSE, /* pc_relative */ |
252b5132 RH |
525 | 0, /* bitpos */ |
526 | complain_overflow_dont, /* complain_on_overflow */ | |
527 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
528 | "GPDISP", /* name */ | |
b34976b6 | 529 | FALSE, /* partial_inplace */ |
252b5132 RH |
530 | 0xffff, /* src_mask */ |
531 | 0xffff, /* dst_mask */ | |
b34976b6 | 532 | TRUE), /* pcrel_offset */ |
252b5132 RH |
533 | |
534 | /* A 21 bit branch. */ | |
535 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
536 | 2, /* rightshift */ | |
537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 21, /* bitsize */ | |
b34976b6 | 539 | TRUE, /* pc_relative */ |
252b5132 RH |
540 | 0, /* bitpos */ |
541 | complain_overflow_signed, /* complain_on_overflow */ | |
542 | 0, /* special_function */ | |
543 | "BRADDR", /* name */ | |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
252b5132 RH |
545 | 0x1fffff, /* src_mask */ |
546 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 547 | TRUE), /* pcrel_offset */ |
252b5132 RH |
548 | |
549 | /* A hint for a jump to a register. */ | |
550 | HOWTO (R_ALPHA_HINT, /* type */ | |
551 | 2, /* rightshift */ | |
dfe57ca0 | 552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 553 | 14, /* bitsize */ |
b34976b6 | 554 | TRUE, /* pc_relative */ |
252b5132 RH |
555 | 0, /* bitpos */ |
556 | complain_overflow_dont, /* complain_on_overflow */ | |
557 | 0, /* special_function */ | |
558 | "HINT", /* name */ | |
b34976b6 | 559 | FALSE, /* partial_inplace */ |
252b5132 RH |
560 | 0x3fff, /* src_mask */ |
561 | 0x3fff, /* dst_mask */ | |
b34976b6 | 562 | TRUE), /* pcrel_offset */ |
252b5132 RH |
563 | |
564 | /* 16 bit PC relative offset. */ | |
565 | HOWTO (R_ALPHA_SREL16, /* type */ | |
566 | 0, /* rightshift */ | |
567 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
568 | 16, /* bitsize */ | |
b34976b6 | 569 | TRUE, /* pc_relative */ |
252b5132 RH |
570 | 0, /* bitpos */ |
571 | complain_overflow_signed, /* complain_on_overflow */ | |
572 | 0, /* special_function */ | |
573 | "SREL16", /* name */ | |
b34976b6 | 574 | FALSE, /* partial_inplace */ |
252b5132 RH |
575 | 0xffff, /* src_mask */ |
576 | 0xffff, /* dst_mask */ | |
b34976b6 | 577 | TRUE), /* pcrel_offset */ |
252b5132 RH |
578 | |
579 | /* 32 bit PC relative offset. */ | |
580 | HOWTO (R_ALPHA_SREL32, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 32, /* bitsize */ | |
b34976b6 | 584 | TRUE, /* pc_relative */ |
252b5132 RH |
585 | 0, /* bitpos */ |
586 | complain_overflow_signed, /* complain_on_overflow */ | |
587 | 0, /* special_function */ | |
588 | "SREL32", /* name */ | |
b34976b6 | 589 | FALSE, /* partial_inplace */ |
252b5132 RH |
590 | 0xffffffff, /* src_mask */ |
591 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 592 | TRUE), /* pcrel_offset */ |
252b5132 RH |
593 | |
594 | /* A 64 bit PC relative offset. */ | |
595 | HOWTO (R_ALPHA_SREL64, /* type */ | |
596 | 0, /* rightshift */ | |
597 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
598 | 64, /* bitsize */ | |
b34976b6 | 599 | TRUE, /* pc_relative */ |
252b5132 RH |
600 | 0, /* bitpos */ |
601 | complain_overflow_signed, /* complain_on_overflow */ | |
602 | 0, /* special_function */ | |
603 | "SREL64", /* name */ | |
b34976b6 | 604 | FALSE, /* partial_inplace */ |
252b5132 RH |
605 | MINUS_ONE, /* src_mask */ |
606 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 607 | TRUE), /* pcrel_offset */ |
252b5132 | 608 | |
dfe57ca0 RH |
609 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
610 | SKIP_HOWTO (12), | |
611 | SKIP_HOWTO (13), | |
612 | SKIP_HOWTO (14), | |
613 | SKIP_HOWTO (15), | |
614 | SKIP_HOWTO (16), | |
252b5132 RH |
615 | |
616 | /* The high 16 bits of the displacement from GP to the target. */ | |
617 | HOWTO (R_ALPHA_GPRELHIGH, | |
618 | 0, /* rightshift */ | |
dfe57ca0 | 619 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 620 | 16, /* bitsize */ |
b34976b6 | 621 | FALSE, /* pc_relative */ |
252b5132 RH |
622 | 0, /* bitpos */ |
623 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 624 | 0, /* special_function */ |
252b5132 | 625 | "GPRELHIGH", /* name */ |
b34976b6 | 626 | FALSE, /* partial_inplace */ |
252b5132 RH |
627 | 0xffff, /* src_mask */ |
628 | 0xffff, /* dst_mask */ | |
b34976b6 | 629 | FALSE), /* pcrel_offset */ |
252b5132 RH |
630 | |
631 | /* The low 16 bits of the displacement from GP to the target. */ | |
632 | HOWTO (R_ALPHA_GPRELLOW, | |
633 | 0, /* rightshift */ | |
dfe57ca0 | 634 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 635 | 16, /* bitsize */ |
b34976b6 | 636 | FALSE, /* pc_relative */ |
252b5132 RH |
637 | 0, /* bitpos */ |
638 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 639 | 0, /* special_function */ |
252b5132 | 640 | "GPRELLOW", /* name */ |
b34976b6 | 641 | FALSE, /* partial_inplace */ |
252b5132 RH |
642 | 0xffff, /* src_mask */ |
643 | 0xffff, /* dst_mask */ | |
b34976b6 | 644 | FALSE), /* pcrel_offset */ |
252b5132 RH |
645 | |
646 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 647 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 648 | 0, /* rightshift */ |
dfe57ca0 | 649 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 | 650 | 16, /* bitsize */ |
b34976b6 | 651 | FALSE, /* pc_relative */ |
252b5132 RH |
652 | 0, /* bitpos */ |
653 | complain_overflow_signed, /* complain_on_overflow */ | |
654 | 0, /* special_function */ | |
dfe57ca0 | 655 | "GPREL16", /* name */ |
b34976b6 | 656 | FALSE, /* partial_inplace */ |
252b5132 RH |
657 | 0xffff, /* src_mask */ |
658 | 0xffff, /* dst_mask */ | |
b34976b6 | 659 | FALSE), /* pcrel_offset */ |
252b5132 | 660 | |
dfe57ca0 RH |
661 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
662 | SKIP_HOWTO (20), | |
663 | SKIP_HOWTO (21), | |
664 | SKIP_HOWTO (22), | |
665 | SKIP_HOWTO (23), | |
252b5132 | 666 | |
fe8bc63d | 667 | /* Misc ELF relocations. */ |
252b5132 RH |
668 | |
669 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
670 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
671 | is present because every other ELF has one, but should not be used | |
672 | because .dynbss is an ugly thing. */ | |
673 | HOWTO (R_ALPHA_COPY, | |
674 | 0, | |
675 | 0, | |
676 | 0, | |
b34976b6 | 677 | FALSE, |
252b5132 RH |
678 | 0, |
679 | complain_overflow_dont, | |
680 | bfd_elf_generic_reloc, | |
681 | "COPY", | |
b34976b6 | 682 | FALSE, |
252b5132 RH |
683 | 0, |
684 | 0, | |
b34976b6 | 685 | TRUE), |
252b5132 RH |
686 | |
687 | /* A dynamic relocation for a .got entry. */ | |
688 | HOWTO (R_ALPHA_GLOB_DAT, | |
689 | 0, | |
690 | 0, | |
691 | 0, | |
b34976b6 | 692 | FALSE, |
252b5132 RH |
693 | 0, |
694 | complain_overflow_dont, | |
695 | bfd_elf_generic_reloc, | |
696 | "GLOB_DAT", | |
b34976b6 | 697 | FALSE, |
252b5132 RH |
698 | 0, |
699 | 0, | |
b34976b6 | 700 | TRUE), |
252b5132 RH |
701 | |
702 | /* A dynamic relocation for a .plt entry. */ | |
703 | HOWTO (R_ALPHA_JMP_SLOT, | |
704 | 0, | |
705 | 0, | |
706 | 0, | |
b34976b6 | 707 | FALSE, |
252b5132 RH |
708 | 0, |
709 | complain_overflow_dont, | |
710 | bfd_elf_generic_reloc, | |
711 | "JMP_SLOT", | |
b34976b6 | 712 | FALSE, |
252b5132 RH |
713 | 0, |
714 | 0, | |
b34976b6 | 715 | TRUE), |
252b5132 RH |
716 | |
717 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
718 | HOWTO (R_ALPHA_RELATIVE, | |
719 | 0, | |
720 | 0, | |
721 | 0, | |
b34976b6 | 722 | FALSE, |
252b5132 RH |
723 | 0, |
724 | complain_overflow_dont, | |
725 | bfd_elf_generic_reloc, | |
726 | "RELATIVE", | |
b34976b6 | 727 | FALSE, |
252b5132 RH |
728 | 0, |
729 | 0, | |
b34976b6 | 730 | TRUE), |
7793f4d0 RH |
731 | |
732 | /* A 21 bit branch that adjusts for gp loads. */ | |
733 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
734 | 2, /* rightshift */ | |
735 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
736 | 21, /* bitsize */ | |
b34976b6 | 737 | TRUE, /* pc_relative */ |
7793f4d0 RH |
738 | 0, /* bitpos */ |
739 | complain_overflow_signed, /* complain_on_overflow */ | |
740 | 0, /* special_function */ | |
741 | "BRSGP", /* name */ | |
b34976b6 | 742 | FALSE, /* partial_inplace */ |
7793f4d0 RH |
743 | 0x1fffff, /* src_mask */ |
744 | 0x1fffff, /* dst_mask */ | |
b34976b6 | 745 | TRUE), /* pcrel_offset */ |
3765b1be RH |
746 | |
747 | /* Creates a tls_index for the symbol in the got. */ | |
748 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
749 | 0, /* rightshift */ | |
750 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 16, /* bitsize */ | |
b34976b6 | 752 | FALSE, /* pc_relative */ |
3765b1be RH |
753 | 0, /* bitpos */ |
754 | complain_overflow_signed, /* complain_on_overflow */ | |
755 | 0, /* special_function */ | |
756 | "TLSGD", /* name */ | |
b34976b6 | 757 | FALSE, /* partial_inplace */ |
3765b1be RH |
758 | 0xffff, /* src_mask */ |
759 | 0xffff, /* dst_mask */ | |
b34976b6 | 760 | FALSE), /* pcrel_offset */ |
3765b1be RH |
761 | |
762 | /* Creates a tls_index for the (current) module in the got. */ | |
763 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
764 | 0, /* rightshift */ | |
765 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
766 | 16, /* bitsize */ | |
b34976b6 | 767 | FALSE, /* pc_relative */ |
3765b1be RH |
768 | 0, /* bitpos */ |
769 | complain_overflow_signed, /* complain_on_overflow */ | |
770 | 0, /* special_function */ | |
771 | "TLSLDM", /* name */ | |
b34976b6 | 772 | FALSE, /* partial_inplace */ |
3765b1be RH |
773 | 0xffff, /* src_mask */ |
774 | 0xffff, /* dst_mask */ | |
b34976b6 | 775 | FALSE), /* pcrel_offset */ |
3765b1be RH |
776 | |
777 | /* A dynamic relocation for a DTP module entry. */ | |
778 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
779 | 0, /* rightshift */ | |
780 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
781 | 64, /* bitsize */ | |
b34976b6 | 782 | FALSE, /* pc_relative */ |
3765b1be RH |
783 | 0, /* bitpos */ |
784 | complain_overflow_bitfield, /* complain_on_overflow */ | |
785 | 0, /* special_function */ | |
786 | "DTPMOD64", /* name */ | |
b34976b6 | 787 | FALSE, /* partial_inplace */ |
3765b1be RH |
788 | MINUS_ONE, /* src_mask */ |
789 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 790 | FALSE), /* pcrel_offset */ |
3765b1be RH |
791 | |
792 | /* Creates a 64-bit offset in the got for the displacement | |
793 | from DTP to the target. */ | |
794 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
795 | 0, /* rightshift */ | |
796 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
797 | 16, /* bitsize */ | |
b34976b6 | 798 | FALSE, /* pc_relative */ |
3765b1be RH |
799 | 0, /* bitpos */ |
800 | complain_overflow_signed, /* complain_on_overflow */ | |
801 | 0, /* special_function */ | |
802 | "GOTDTPREL", /* name */ | |
b34976b6 | 803 | FALSE, /* partial_inplace */ |
3765b1be RH |
804 | 0xffff, /* src_mask */ |
805 | 0xffff, /* dst_mask */ | |
b34976b6 | 806 | FALSE), /* pcrel_offset */ |
3765b1be RH |
807 | |
808 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
809 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
810 | 0, /* rightshift */ | |
811 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
812 | 64, /* bitsize */ | |
b34976b6 | 813 | FALSE, /* pc_relative */ |
3765b1be RH |
814 | 0, /* bitpos */ |
815 | complain_overflow_bitfield, /* complain_on_overflow */ | |
816 | 0, /* special_function */ | |
817 | "DTPREL64", /* name */ | |
b34976b6 | 818 | FALSE, /* partial_inplace */ |
3765b1be RH |
819 | MINUS_ONE, /* src_mask */ |
820 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 821 | FALSE), /* pcrel_offset */ |
3765b1be RH |
822 | |
823 | /* The high 16 bits of the displacement from DTP to the target. */ | |
824 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
825 | 0, /* rightshift */ | |
826 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
827 | 16, /* bitsize */ | |
b34976b6 | 828 | FALSE, /* pc_relative */ |
3765b1be RH |
829 | 0, /* bitpos */ |
830 | complain_overflow_signed, /* complain_on_overflow */ | |
831 | 0, /* special_function */ | |
832 | "DTPRELHI", /* name */ | |
b34976b6 | 833 | FALSE, /* partial_inplace */ |
3765b1be RH |
834 | 0xffff, /* src_mask */ |
835 | 0xffff, /* dst_mask */ | |
b34976b6 | 836 | FALSE), /* pcrel_offset */ |
3765b1be RH |
837 | |
838 | /* The low 16 bits of the displacement from DTP to the target. */ | |
839 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
840 | 0, /* rightshift */ | |
841 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
842 | 16, /* bitsize */ | |
b34976b6 | 843 | FALSE, /* pc_relative */ |
3765b1be RH |
844 | 0, /* bitpos */ |
845 | complain_overflow_dont, /* complain_on_overflow */ | |
846 | 0, /* special_function */ | |
847 | "DTPRELLO", /* name */ | |
b34976b6 | 848 | FALSE, /* partial_inplace */ |
3765b1be RH |
849 | 0xffff, /* src_mask */ |
850 | 0xffff, /* dst_mask */ | |
b34976b6 | 851 | FALSE), /* pcrel_offset */ |
3765b1be RH |
852 | |
853 | /* A 16-bit displacement from DTP to the target. */ | |
854 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
855 | 0, /* rightshift */ | |
856 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
857 | 16, /* bitsize */ | |
b34976b6 | 858 | FALSE, /* pc_relative */ |
3765b1be RH |
859 | 0, /* bitpos */ |
860 | complain_overflow_signed, /* complain_on_overflow */ | |
861 | 0, /* special_function */ | |
862 | "DTPREL16", /* name */ | |
b34976b6 | 863 | FALSE, /* partial_inplace */ |
3765b1be RH |
864 | 0xffff, /* src_mask */ |
865 | 0xffff, /* dst_mask */ | |
b34976b6 | 866 | FALSE), /* pcrel_offset */ |
3765b1be RH |
867 | |
868 | /* Creates a 64-bit offset in the got for the displacement | |
869 | from TP to the target. */ | |
870 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
871 | 0, /* rightshift */ | |
872 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 16, /* bitsize */ | |
b34976b6 | 874 | FALSE, /* pc_relative */ |
3765b1be RH |
875 | 0, /* bitpos */ |
876 | complain_overflow_signed, /* complain_on_overflow */ | |
877 | 0, /* special_function */ | |
878 | "GOTTPREL", /* name */ | |
b34976b6 | 879 | FALSE, /* partial_inplace */ |
3765b1be RH |
880 | 0xffff, /* src_mask */ |
881 | 0xffff, /* dst_mask */ | |
b34976b6 | 882 | FALSE), /* pcrel_offset */ |
3765b1be RH |
883 | |
884 | /* A dynamic relocation for a displacement from TP to the target. */ | |
885 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
886 | 0, /* rightshift */ | |
887 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
888 | 64, /* bitsize */ | |
b34976b6 | 889 | FALSE, /* pc_relative */ |
3765b1be RH |
890 | 0, /* bitpos */ |
891 | complain_overflow_bitfield, /* complain_on_overflow */ | |
892 | 0, /* special_function */ | |
893 | "TPREL64", /* name */ | |
b34976b6 | 894 | FALSE, /* partial_inplace */ |
3765b1be RH |
895 | MINUS_ONE, /* src_mask */ |
896 | MINUS_ONE, /* dst_mask */ | |
b34976b6 | 897 | FALSE), /* pcrel_offset */ |
3765b1be RH |
898 | |
899 | /* The high 16 bits of the displacement from TP to the target. */ | |
900 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
901 | 0, /* rightshift */ | |
902 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
903 | 16, /* bitsize */ | |
b34976b6 | 904 | FALSE, /* pc_relative */ |
3765b1be RH |
905 | 0, /* bitpos */ |
906 | complain_overflow_signed, /* complain_on_overflow */ | |
907 | 0, /* special_function */ | |
908 | "TPRELHI", /* name */ | |
b34976b6 | 909 | FALSE, /* partial_inplace */ |
3765b1be RH |
910 | 0xffff, /* src_mask */ |
911 | 0xffff, /* dst_mask */ | |
b34976b6 | 912 | FALSE), /* pcrel_offset */ |
3765b1be RH |
913 | |
914 | /* The low 16 bits of the displacement from TP to the target. */ | |
915 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
916 | 0, /* rightshift */ | |
917 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
918 | 16, /* bitsize */ | |
b34976b6 | 919 | FALSE, /* pc_relative */ |
3765b1be RH |
920 | 0, /* bitpos */ |
921 | complain_overflow_dont, /* complain_on_overflow */ | |
922 | 0, /* special_function */ | |
923 | "TPRELLO", /* name */ | |
b34976b6 | 924 | FALSE, /* partial_inplace */ |
3765b1be RH |
925 | 0xffff, /* src_mask */ |
926 | 0xffff, /* dst_mask */ | |
b34976b6 | 927 | FALSE), /* pcrel_offset */ |
3765b1be RH |
928 | |
929 | /* A 16-bit displacement from TP to the target. */ | |
930 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
931 | 0, /* rightshift */ | |
932 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
933 | 16, /* bitsize */ | |
b34976b6 | 934 | FALSE, /* pc_relative */ |
3765b1be RH |
935 | 0, /* bitpos */ |
936 | complain_overflow_signed, /* complain_on_overflow */ | |
937 | 0, /* special_function */ | |
938 | "TPREL16", /* name */ | |
b34976b6 | 939 | FALSE, /* partial_inplace */ |
3765b1be RH |
940 | 0xffff, /* src_mask */ |
941 | 0xffff, /* dst_mask */ | |
b34976b6 | 942 | FALSE), /* pcrel_offset */ |
252b5132 RH |
943 | }; |
944 | ||
945 | /* A relocation function which doesn't do anything. */ | |
946 | ||
947 | static bfd_reloc_status_type | |
948 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 949 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 950 | arelent *reloc; |
56fc028e AJ |
951 | asymbol *sym ATTRIBUTE_UNUSED; |
952 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
953 | asection *sec; |
954 | bfd *output_bfd; | |
56fc028e | 955 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
956 | { |
957 | if (output_bfd) | |
958 | reloc->address += sec->output_offset; | |
959 | return bfd_reloc_ok; | |
960 | } | |
961 | ||
962 | /* A relocation function used for an unsupported reloc. */ | |
963 | ||
964 | static bfd_reloc_status_type | |
965 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 966 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 967 | arelent *reloc; |
56fc028e AJ |
968 | asymbol *sym ATTRIBUTE_UNUSED; |
969 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
970 | asection *sec; |
971 | bfd *output_bfd; | |
56fc028e | 972 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
973 | { |
974 | if (output_bfd) | |
975 | reloc->address += sec->output_offset; | |
976 | return bfd_reloc_notsupported; | |
977 | } | |
978 | ||
979 | /* Do the work of the GPDISP relocation. */ | |
980 | ||
981 | static bfd_reloc_status_type | |
982 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) | |
983 | bfd *abfd; | |
984 | bfd_vma gpdisp; | |
985 | bfd_byte *p_ldah; | |
986 | bfd_byte *p_lda; | |
987 | { | |
988 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
989 | bfd_vma addend; | |
990 | unsigned long i_ldah, i_lda; | |
991 | ||
992 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
993 | i_lda = bfd_get_32 (abfd, p_lda); | |
994 | ||
995 | /* Complain if the instructions are not correct. */ | |
996 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
997 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
998 | ret = bfd_reloc_dangerous; | |
999 | ||
1000 | /* Extract the user-supplied offset, mirroring the sign extensions | |
1001 | that the instructions perform. */ | |
1002 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
1003 | addend = (addend ^ 0x80008000) - 0x80008000; | |
1004 | ||
1005 | gpdisp += addend; | |
1006 | ||
1007 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
1008 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
1009 | ret = bfd_reloc_overflow; | |
1010 | ||
1011 | /* compensate for the sign extension again. */ | |
1012 | i_ldah = ((i_ldah & 0xffff0000) | |
1013 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
1014 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
1015 | ||
dc810e39 AM |
1016 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); |
1017 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
252b5132 RH |
1018 | |
1019 | return ret; | |
1020 | } | |
1021 | ||
1022 | /* The special function for the GPDISP reloc. */ | |
1023 | ||
1024 | static bfd_reloc_status_type | |
1025 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, | |
1026 | output_bfd, err_msg) | |
1027 | bfd *abfd; | |
1028 | arelent *reloc_entry; | |
56fc028e | 1029 | asymbol *sym ATTRIBUTE_UNUSED; |
252b5132 RH |
1030 | PTR data; |
1031 | asection *input_section; | |
1032 | bfd *output_bfd; | |
1033 | char **err_msg; | |
1034 | { | |
1035 | bfd_reloc_status_type ret; | |
1036 | bfd_vma gp, relocation; | |
07515404 | 1037 | bfd_vma high_address; |
252b5132 RH |
1038 | bfd_byte *p_ldah, *p_lda; |
1039 | ||
1040 | /* Don't do anything if we're not doing a final link. */ | |
1041 | if (output_bfd) | |
1042 | { | |
1043 | reloc_entry->address += input_section->output_offset; | |
1044 | return bfd_reloc_ok; | |
1045 | } | |
1046 | ||
07515404 AM |
1047 | high_address = bfd_get_section_limit (abfd, input_section); |
1048 | if (reloc_entry->address > high_address | |
1049 | || reloc_entry->address + reloc_entry->addend > high_address) | |
252b5132 RH |
1050 | return bfd_reloc_outofrange; |
1051 | ||
1052 | /* The gp used in the portion of the output object to which this | |
1053 | input object belongs is cached on the input bfd. */ | |
1054 | gp = _bfd_get_gp_value (abfd); | |
1055 | ||
1056 | relocation = (input_section->output_section->vma | |
1057 | + input_section->output_offset | |
1058 | + reloc_entry->address); | |
1059 | ||
1060 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
1061 | p_lda = p_ldah + reloc_entry->addend; | |
1062 | ||
1063 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
1064 | ||
1065 | /* Complain if the instructions are not correct. */ | |
1066 | if (ret == bfd_reloc_dangerous) | |
1067 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
1068 | ||
1069 | return ret; | |
1070 | } | |
1071 | ||
1072 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ | |
1073 | ||
1074 | struct elf_reloc_map | |
1075 | { | |
1076 | bfd_reloc_code_real_type bfd_reloc_val; | |
1077 | int elf_reloc_val; | |
1078 | }; | |
1079 | ||
1080 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1081 | { | |
dfe57ca0 RH |
1082 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1083 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1084 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1085 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1086 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1087 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1088 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1089 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1090 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1091 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1092 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1093 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1094 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1095 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1096 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1097 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1098 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1099 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1100 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1101 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1102 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1103 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1104 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1105 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1106 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1107 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1108 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1109 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1110 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1111 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1112 | }; |
1113 | ||
1114 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1115 | ||
1116 | static reloc_howto_type * | |
1117 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) | |
56fc028e | 1118 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1119 | bfd_reloc_code_real_type code; |
1120 | { | |
1121 | const struct elf_reloc_map *i, *e; | |
1122 | i = e = elf64_alpha_reloc_map; | |
1123 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1124 | for (; i != e; ++i) | |
1125 | { | |
1126 | if (i->bfd_reloc_val == code) | |
1127 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1128 | } | |
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1133 | ||
1134 | static void | |
1135 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) | |
56fc028e | 1136 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 1137 | arelent *cache_ptr; |
947216bf | 1138 | Elf_Internal_Rela *dst; |
252b5132 RH |
1139 | { |
1140 | unsigned r_type; | |
1141 | ||
1142 | r_type = ELF64_R_TYPE(dst->r_info); | |
1143 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); | |
1144 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1145 | } | |
3765b1be RH |
1146 | |
1147 | /* These two relocations create a two-word entry in the got. */ | |
1148 | #define alpha_got_entry_size(r_type) \ | |
1149 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1150 | |
1151 | /* This is PT_TLS segment p_vaddr. */ | |
e1918d23 AM |
1152 | #define alpha_get_dtprel_base(info) \ |
1153 | (elf_hash_table (info)->tls_sec->vma) | |
9e756d64 RH |
1154 | |
1155 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1156 | is assigned offset round(16, PT_TLS p_align). */ | |
e1918d23 AM |
1157 | #define alpha_get_tprel_base(info) \ |
1158 | (elf_hash_table (info)->tls_sec->vma \ | |
1159 | - align_power ((bfd_vma) 16, \ | |
1160 | elf_hash_table (info)->tls_sec->alignment_power)) | |
252b5132 | 1161 | \f |
fe8bc63d | 1162 | /* These functions do relaxation for Alpha ELF. |
252b5132 RH |
1163 | |
1164 | Currently I'm only handling what I can do with existing compiler | |
1165 | and assembler support, which means no instructions are removed, | |
1166 | though some may be nopped. At this time GCC does not emit enough | |
1167 | information to do all of the relaxing that is possible. It will | |
1168 | take some not small amount of work for that to happen. | |
1169 | ||
1170 | There are a couple of interesting papers that I once read on this | |
1171 | subject, that I cannot find references to at the moment, that | |
1172 | related to Alpha in particular. They are by David Wall, then of | |
1173 | DEC WRL. */ | |
1174 | ||
1175 | #define OP_LDA 0x08 | |
1176 | #define OP_LDAH 0x09 | |
1177 | #define INSN_JSR 0x68004000 | |
1178 | #define INSN_JSR_MASK 0xfc00c000 | |
1179 | #define OP_LDQ 0x29 | |
1180 | #define OP_BR 0x30 | |
1181 | #define OP_BSR 0x34 | |
f304919d | 1182 | #define INSN_UNOP 0x2ffe0000 |
9e756d64 RH |
1183 | #define INSN_ADDQ 0x40000400 |
1184 | #define INSN_RDUNIQ 0x0000009e | |
252b5132 RH |
1185 | |
1186 | struct alpha_relax_info | |
1187 | { | |
1188 | bfd *abfd; | |
1189 | asection *sec; | |
1190 | bfd_byte *contents; | |
9e756d64 | 1191 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
1192 | Elf_Internal_Rela *relocs, *relend; |
1193 | struct bfd_link_info *link_info; | |
252b5132 RH |
1194 | bfd_vma gp; |
1195 | bfd *gotobj; | |
1196 | asection *tsec; | |
1197 | struct alpha_elf_link_hash_entry *h; | |
9e756d64 | 1198 | struct alpha_elf_got_entry **first_gotent; |
252b5132 | 1199 | struct alpha_elf_got_entry *gotent; |
b34976b6 AM |
1200 | bfd_boolean changed_contents; |
1201 | bfd_boolean changed_relocs; | |
252b5132 RH |
1202 | unsigned char other; |
1203 | }; | |
1204 | ||
b34976b6 | 1205 | static bfd_boolean elf64_alpha_relax_with_lituse |
fe8bc63d | 1206 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
252b5132 | 1207 | Elf_Internal_Rela *irel)); |
252b5132 RH |
1208 | static bfd_vma elf64_alpha_relax_opt_call |
1209 | PARAMS((struct alpha_relax_info *info, bfd_vma symval)); | |
b34976b6 | 1210 | static bfd_boolean elf64_alpha_relax_got_load |
9e756d64 RH |
1211 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
1212 | Elf_Internal_Rela *irel, unsigned long)); | |
b34976b6 | 1213 | static bfd_boolean elf64_alpha_relax_gprelhilo |
9e756d64 | 1214 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
b34976b6 AM |
1215 | Elf_Internal_Rela *irel, bfd_boolean)); |
1216 | static bfd_boolean elf64_alpha_relax_tls_get_addr | |
9e756d64 | 1217 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
b34976b6 | 1218 | Elf_Internal_Rela *irel, bfd_boolean)); |
b34976b6 | 1219 | static bfd_boolean elf64_alpha_relax_section |
252b5132 | 1220 | PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, |
b34976b6 | 1221 | bfd_boolean *again)); |
252b5132 RH |
1222 | |
1223 | static Elf_Internal_Rela * | |
1224 | elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) | |
1225 | Elf_Internal_Rela *rel, *relend; | |
1226 | bfd_vma offset; | |
1227 | int type; | |
1228 | { | |
1229 | while (rel < relend) | |
1230 | { | |
52b9d213 AM |
1231 | if (rel->r_offset == offset |
1232 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
252b5132 RH |
1233 | return rel; |
1234 | ++rel; | |
1235 | } | |
1236 | return NULL; | |
1237 | } | |
1238 | ||
b34976b6 | 1239 | static bfd_boolean |
9e756d64 | 1240 | elf64_alpha_relax_with_lituse (info, symval, irel) |
252b5132 RH |
1241 | struct alpha_relax_info *info; |
1242 | bfd_vma symval; | |
9e756d64 | 1243 | Elf_Internal_Rela *irel; |
252b5132 | 1244 | { |
9e756d64 | 1245 | Elf_Internal_Rela *urel, *irelend = info->relend; |
252b5132 RH |
1246 | int flags, count, i; |
1247 | bfd_signed_vma disp; | |
b34976b6 AM |
1248 | bfd_boolean fits16; |
1249 | bfd_boolean fits32; | |
1250 | bfd_boolean lit_reused = FALSE; | |
1251 | bfd_boolean all_optimized = TRUE; | |
252b5132 RH |
1252 | unsigned int lit_insn; |
1253 | ||
1254 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1255 | if (lit_insn >> 26 != OP_LDQ) | |
1256 | { | |
1257 | ((*_bfd_error_handler) | |
d003868e AM |
1258 | ("%B: %A+0x%lx: warning: LITERAL relocation against unexpected insn", |
1259 | info->abfd, info->sec, | |
8f615d07 | 1260 | (unsigned long) irel->r_offset)); |
b34976b6 | 1261 | return TRUE; |
252b5132 RH |
1262 | } |
1263 | ||
9e756d64 RH |
1264 | /* Can't relax dynamic symbols. */ |
1265 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
b34976b6 | 1266 | return TRUE; |
9e756d64 | 1267 | |
252b5132 RH |
1268 | /* Summarize how this particular LITERAL is used. */ |
1269 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
1270 | { | |
1271 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) | |
1272 | break; | |
1e738b87 | 1273 | if (urel->r_addend <= 3) |
252b5132 RH |
1274 | flags |= 1 << urel->r_addend; |
1275 | } | |
1276 | ||
fe8bc63d | 1277 | /* A little preparation for the loop... */ |
252b5132 | 1278 | disp = symval - info->gp; |
252b5132 RH |
1279 | |
1280 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) | |
1281 | { | |
1282 | unsigned int insn; | |
ffcb7aff NC |
1283 | int insn_disp; |
1284 | bfd_signed_vma xdisp; | |
1285 | ||
252b5132 RH |
1286 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
1287 | ||
1288 | switch (urel->r_addend) | |
1289 | { | |
9e756d64 RH |
1290 | case LITUSE_ALPHA_ADDR: |
1291 | default: | |
252b5132 RH |
1292 | /* This type is really just a placeholder to note that all |
1293 | uses cannot be optimized, but to still allow some. */ | |
b34976b6 | 1294 | all_optimized = FALSE; |
252b5132 RH |
1295 | break; |
1296 | ||
9e756d64 | 1297 | case LITUSE_ALPHA_BASE: |
252b5132 | 1298 | /* We can always optimize 16-bit displacements. */ |
ffcb7aff NC |
1299 | |
1300 | /* Extract the displacement from the instruction, sign-extending | |
1301 | it if necessary, then test whether it is within 16 or 32 bits | |
1302 | displacement from GP. */ | |
1303 | insn_disp = insn & 0x0000ffff; | |
9e756d64 RH |
1304 | if (insn_disp & 0x8000) |
1305 | insn_disp |= ~0xffff; /* Negative: sign-extend. */ | |
ffcb7aff NC |
1306 | |
1307 | xdisp = disp + insn_disp; | |
9e756d64 RH |
1308 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); |
1309 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
1310 | && xdisp < 0x7fff8000); | |
ffcb7aff | 1311 | |
252b5132 RH |
1312 | if (fits16) |
1313 | { | |
ffcb7aff | 1314 | /* Take the op code and dest from this insn, take the base |
fe8bc63d | 1315 | register from the literal insn. Leave the offset alone. */ |
ffcb7aff | 1316 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); |
252b5132 | 1317 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
dfe57ca0 | 1318 | R_ALPHA_GPREL16); |
252b5132 | 1319 | urel->r_addend = irel->r_addend; |
b34976b6 | 1320 | info->changed_relocs = TRUE; |
252b5132 | 1321 | |
dc810e39 AM |
1322 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1323 | info->contents + urel->r_offset); | |
b34976b6 | 1324 | info->changed_contents = TRUE; |
252b5132 RH |
1325 | } |
1326 | ||
1327 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ | |
1328 | else if (fits32 && !(flags & ~6)) | |
1329 | { | |
ffcb7aff | 1330 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ |
252b5132 RH |
1331 | |
1332 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1333 | R_ALPHA_GPRELHIGH); | |
1334 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
dc810e39 | 1335 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, |
252b5132 | 1336 | info->contents + irel->r_offset); |
b34976b6 AM |
1337 | lit_reused = TRUE; |
1338 | info->changed_contents = TRUE; | |
252b5132 RH |
1339 | |
1340 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1341 | R_ALPHA_GPRELLOW); | |
1342 | urel->r_addend = irel->r_addend; | |
b34976b6 | 1343 | info->changed_relocs = TRUE; |
252b5132 RH |
1344 | } |
1345 | else | |
b34976b6 | 1346 | all_optimized = FALSE; |
252b5132 RH |
1347 | break; |
1348 | ||
9e756d64 | 1349 | case LITUSE_ALPHA_BYTOFF: |
252b5132 RH |
1350 | /* We can always optimize byte instructions. */ |
1351 | ||
1352 | /* FIXME: sanity check the insn for byte op. Check that the | |
1353 | literal dest reg is indeed Rb in the byte insn. */ | |
1354 | ||
dc810e39 AM |
1355 | insn &= ~ (unsigned) 0x001ff000; |
1356 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 RH |
1357 | |
1358 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1359 | urel->r_addend = 0; | |
b34976b6 | 1360 | info->changed_relocs = TRUE; |
252b5132 | 1361 | |
dc810e39 AM |
1362 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1363 | info->contents + urel->r_offset); | |
b34976b6 | 1364 | info->changed_contents = TRUE; |
252b5132 RH |
1365 | break; |
1366 | ||
9e756d64 RH |
1367 | case LITUSE_ALPHA_JSR: |
1368 | case LITUSE_ALPHA_TLSGD: | |
1369 | case LITUSE_ALPHA_TLSLDM: | |
252b5132 | 1370 | { |
f44f99a5 | 1371 | bfd_vma optdest, org; |
252b5132 RH |
1372 | bfd_signed_vma odisp; |
1373 | ||
f44f99a5 RH |
1374 | /* If not zero, place to jump without needing pv. */ |
1375 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
1376 | org = (info->sec->output_section->vma | |
1377 | + info->sec->output_offset | |
1378 | + urel->r_offset + 4); | |
252b5132 | 1379 | odisp = (optdest ? optdest : symval) - org; |
f44f99a5 | 1380 | |
252b5132 RH |
1381 | if (odisp >= -0x400000 && odisp < 0x400000) |
1382 | { | |
1383 | Elf_Internal_Rela *xrel; | |
1384 | ||
fe8bc63d | 1385 | /* Preserve branch prediction call stack when possible. */ |
252b5132 RH |
1386 | if ((insn & INSN_JSR_MASK) == INSN_JSR) |
1387 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
1388 | else | |
1389 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
fe8bc63d | 1390 | |
252b5132 RH |
1391 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
1392 | R_ALPHA_BRADDR); | |
1393 | urel->r_addend = irel->r_addend; | |
1394 | ||
1395 | if (optdest) | |
1396 | urel->r_addend += optdest - symval; | |
1397 | else | |
b34976b6 | 1398 | all_optimized = FALSE; |
252b5132 | 1399 | |
dc810e39 AM |
1400 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1401 | info->contents + urel->r_offset); | |
252b5132 RH |
1402 | |
1403 | /* Kill any HINT reloc that might exist for this insn. */ | |
1404 | xrel = (elf64_alpha_find_reloc_at_ofs | |
fe8bc63d | 1405 | (info->relocs, info->relend, urel->r_offset, |
252b5132 RH |
1406 | R_ALPHA_HINT)); |
1407 | if (xrel) | |
1408 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1409 | ||
b34976b6 AM |
1410 | info->changed_contents = TRUE; |
1411 | info->changed_relocs = TRUE; | |
252b5132 RH |
1412 | } |
1413 | else | |
b34976b6 | 1414 | all_optimized = FALSE; |
252b5132 | 1415 | |
1cd6895c RH |
1416 | /* Even if the target is not in range for a direct branch, |
1417 | if we share a GP, we can eliminate the gp reload. */ | |
1418 | if (optdest) | |
1419 | { | |
1420 | Elf_Internal_Rela *gpdisp | |
1421 | = (elf64_alpha_find_reloc_at_ofs | |
9e756d64 RH |
1422 | (info->relocs, irelend, urel->r_offset + 4, |
1423 | R_ALPHA_GPDISP)); | |
1cd6895c RH |
1424 | if (gpdisp) |
1425 | { | |
cedb70c5 | 1426 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; |
1cd6895c RH |
1427 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; |
1428 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
1429 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
1430 | ||
1431 | /* Verify that the instruction is "ldah $29,0($26)". | |
1432 | Consider a function that ends in a noreturn call, | |
1433 | and that the next function begins with an ldgp, | |
1434 | and that by accident there is no padding between. | |
1435 | In that case the insn would use $27 as the base. */ | |
1436 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
1437 | { | |
dc810e39 AM |
1438 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); |
1439 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
1cd6895c RH |
1440 | |
1441 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
b34976b6 AM |
1442 | info->changed_contents = TRUE; |
1443 | info->changed_relocs = TRUE; | |
1cd6895c RH |
1444 | } |
1445 | } | |
1446 | } | |
252b5132 RH |
1447 | } |
1448 | break; | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | /* If all cases were optimized, we can reduce the use count on this | |
1453 | got entry by one, possibly eliminating it. */ | |
1454 | if (all_optimized) | |
1455 | { | |
3765b1be RH |
1456 | if (--info->gotent->use_count == 0) |
1457 | { | |
9e756d64 RH |
1458 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
1459 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3765b1be | 1460 | if (!info->h) |
9e756d64 | 1461 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; |
3765b1be | 1462 | } |
252b5132 RH |
1463 | |
1464 | /* If the literal instruction is no longer needed (it may have been | |
3765b1be RH |
1465 | reused. We can eliminate it. */ |
1466 | /* ??? For now, I don't want to deal with compacting the section, | |
252b5132 RH |
1467 | so just nop it out. */ |
1468 | if (!lit_reused) | |
1469 | { | |
1470 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
b34976b6 | 1471 | info->changed_relocs = TRUE; |
252b5132 | 1472 | |
dc810e39 AM |
1473 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
1474 | info->contents + irel->r_offset); | |
b34976b6 | 1475 | info->changed_contents = TRUE; |
252b5132 RH |
1476 | } |
1477 | } | |
1478 | ||
b34976b6 | 1479 | return TRUE; |
252b5132 RH |
1480 | } |
1481 | ||
1482 | static bfd_vma | |
1483 | elf64_alpha_relax_opt_call (info, symval) | |
1484 | struct alpha_relax_info *info; | |
1485 | bfd_vma symval; | |
1486 | { | |
1487 | /* If the function has the same gp, and we can identify that the | |
1488 | function does not use its function pointer, we can eliminate the | |
1489 | address load. */ | |
1490 | ||
1491 | /* If the symbol is marked NOPV, we are being told the function never | |
1492 | needs its procedure value. */ | |
c810873d | 1493 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) |
252b5132 RH |
1494 | return symval; |
1495 | ||
1496 | /* If the symbol is marked STD_GP, we are being told the function does | |
fe8bc63d | 1497 | a normal ldgp in the first two words. */ |
c810873d | 1498 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) |
252b5132 RH |
1499 | ; |
1500 | ||
1501 | /* Otherwise, we may be able to identify a GP load in the first two | |
1502 | words, which we can then skip. */ | |
fe8bc63d | 1503 | else |
252b5132 RH |
1504 | { |
1505 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; | |
1506 | bfd_vma ofs; | |
1507 | ||
fe8bc63d | 1508 | /* Load the relocations from the section that the target symbol is in. */ |
252b5132 RH |
1509 | if (info->sec == info->tsec) |
1510 | { | |
1511 | tsec_relocs = info->relocs; | |
1512 | tsec_relend = info->relend; | |
1513 | tsec_free = NULL; | |
1514 | } | |
1515 | else | |
1516 | { | |
45d6a902 | 1517 | tsec_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
1518 | (info->abfd, info->tsec, (PTR) NULL, |
1519 | (Elf_Internal_Rela *) NULL, | |
1520 | info->link_info->keep_memory)); | |
1521 | if (tsec_relocs == NULL) | |
1522 | return 0; | |
1523 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
1524 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
1525 | } | |
1526 | ||
1527 | /* Recover the symbol's offset within the section. */ | |
1528 | ofs = (symval - info->tsec->output_section->vma | |
1529 | - info->tsec->output_offset); | |
fe8bc63d | 1530 | |
252b5132 RH |
1531 | /* Look for a GPDISP reloc. */ |
1532 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
1533 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
1534 | ||
1535 | if (!gpdisp || gpdisp->r_addend != 4) | |
1536 | { | |
1537 | if (tsec_free) | |
1538 | free (tsec_free); | |
1539 | return 0; | |
1540 | } | |
1541 | if (tsec_free) | |
1542 | free (tsec_free); | |
1543 | } | |
1544 | ||
fe8bc63d | 1545 | /* We've now determined that we can skip an initial gp load. Verify |
252b5132 RH |
1546 | that the call and the target use the same gp. */ |
1547 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
1548 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
1549 | return 0; | |
1550 | ||
1551 | return symval + 8; | |
1552 | } | |
1553 | ||
b34976b6 | 1554 | static bfd_boolean |
9e756d64 | 1555 | elf64_alpha_relax_got_load (info, symval, irel, r_type) |
252b5132 RH |
1556 | struct alpha_relax_info *info; |
1557 | bfd_vma symval; | |
1558 | Elf_Internal_Rela *irel; | |
9e756d64 | 1559 | unsigned long r_type; |
252b5132 RH |
1560 | { |
1561 | unsigned int insn; | |
1562 | bfd_signed_vma disp; | |
1563 | ||
1564 | /* Get the instruction. */ | |
1565 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1566 | ||
1567 | if (insn >> 26 != OP_LDQ) | |
1568 | { | |
9e756d64 | 1569 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; |
252b5132 | 1570 | ((*_bfd_error_handler) |
d003868e AM |
1571 | ("%B: %A+0x%lx: warning: %s relocation against unexpected insn", |
1572 | info->abfd, info->sec, | |
9e756d64 | 1573 | (unsigned long) irel->r_offset, howto->name)); |
b34976b6 | 1574 | return TRUE; |
252b5132 RH |
1575 | } |
1576 | ||
9e756d64 RH |
1577 | /* Can't relax dynamic symbols. */ |
1578 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
b34976b6 | 1579 | return TRUE; |
252b5132 | 1580 | |
9e756d64 RH |
1581 | /* Can't use local-exec relocations in shared libraries. */ |
1582 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
b34976b6 | 1583 | return TRUE; |
252b5132 | 1584 | |
9e756d64 RH |
1585 | if (r_type == R_ALPHA_LITERAL) |
1586 | disp = symval - info->gp; | |
1587 | else | |
1588 | { | |
1589 | bfd_vma dtp_base, tp_base; | |
1590 | ||
e1918d23 AM |
1591 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
1592 | dtp_base = alpha_get_dtprel_base (info->link_info); | |
1593 | tp_base = alpha_get_tprel_base (info->link_info); | |
9e756d64 RH |
1594 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); |
1595 | } | |
252b5132 | 1596 | |
9e756d64 | 1597 | if (disp < -0x8000 || disp >= 0x8000) |
b34976b6 | 1598 | return TRUE; |
9e756d64 RH |
1599 | |
1600 | /* Exchange LDQ for LDA. In the case of the TLS relocs, we're loading | |
1601 | a constant, so force the base register to be $31. */ | |
1602 | if (r_type == R_ALPHA_LITERAL) | |
1603 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
1604 | else | |
1605 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
dc810e39 | 1606 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
b34976b6 | 1607 | info->changed_contents = TRUE; |
cedb70c5 | 1608 | |
1bbc9cec RH |
1609 | /* Reduce the use count on this got entry by one, possibly |
1610 | eliminating it. */ | |
1611 | if (--info->gotent->use_count == 0) | |
1612 | { | |
1613 | int sz = alpha_got_entry_size (r_type); | |
1614 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1615 | if (!info->h) | |
1616 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
1617 | } | |
1618 | ||
1619 | /* Smash the existing GOT relocation for its 16-bit immediate pair. */ | |
9e756d64 RH |
1620 | switch (r_type) |
1621 | { | |
1622 | case R_ALPHA_LITERAL: | |
1623 | r_type = R_ALPHA_GPREL16; | |
1624 | break; | |
1625 | case R_ALPHA_GOTDTPREL: | |
1626 | r_type = R_ALPHA_DTPREL16; | |
1627 | break; | |
1628 | case R_ALPHA_GOTTPREL: | |
1629 | r_type = R_ALPHA_TPREL16; | |
1630 | break; | |
1631 | default: | |
1632 | BFD_ASSERT (0); | |
b34976b6 | 1633 | return FALSE; |
9e756d64 | 1634 | } |
252b5132 | 1635 | |
9e756d64 | 1636 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); |
b34976b6 | 1637 | info->changed_relocs = TRUE; |
252b5132 | 1638 | |
252b5132 RH |
1639 | /* ??? Search forward through this basic block looking for insns |
1640 | that use the target register. Stop after an insn modifying the | |
1641 | register is seen, or after a branch or call. | |
1642 | ||
1643 | Any such memory load insn may be substituted by a load directly | |
1644 | off the GP. This allows the memory load insn to be issued before | |
fe8bc63d | 1645 | the calculated GP register would otherwise be ready. |
252b5132 RH |
1646 | |
1647 | Any such jsr insn can be replaced by a bsr if it is in range. | |
1648 | ||
1649 | This would mean that we'd have to _add_ relocations, the pain of | |
1650 | which gives one pause. */ | |
1651 | ||
b34976b6 | 1652 | return TRUE; |
252b5132 RH |
1653 | } |
1654 | ||
b34976b6 | 1655 | static bfd_boolean |
9e756d64 RH |
1656 | elf64_alpha_relax_gprelhilo (info, symval, irel, hi) |
1657 | struct alpha_relax_info *info; | |
1658 | bfd_vma symval; | |
1659 | Elf_Internal_Rela *irel; | |
b34976b6 | 1660 | bfd_boolean hi; |
9e756d64 RH |
1661 | { |
1662 | unsigned int insn; | |
1663 | bfd_signed_vma disp; | |
1664 | bfd_byte *pos = info->contents + irel->r_offset; | |
1665 | ||
1666 | /* ??? This assumes that the compiler doesn't render | |
1667 | ||
1668 | array[i] | |
1669 | as | |
1670 | ldah t, array(gp) !gprelhigh | |
1671 | s8addl i, t, t | |
1672 | ldq r, array(t) !gprellow | |
1673 | ||
1674 | which would indeed be the most efficient way to implement this. */ | |
1675 | ||
b34976b6 | 1676 | return TRUE; |
9e756d64 RH |
1677 | |
1678 | disp = symval - info->gp; | |
1679 | if (disp < -0x8000 || disp >= 0x8000) | |
b34976b6 | 1680 | return TRUE; |
9e756d64 RH |
1681 | |
1682 | if (hi) | |
1683 | { | |
1684 | /* Nop out the high instruction. */ | |
1685 | ||
1686 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos); | |
b34976b6 | 1687 | info->changed_contents = TRUE; |
9e756d64 RH |
1688 | |
1689 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1690 | irel->r_addend = 0; | |
b34976b6 | 1691 | info->changed_relocs = TRUE; |
9e756d64 RH |
1692 | } |
1693 | else | |
1694 | { | |
1695 | /* Adjust the low instruction to reference GP directly. */ | |
1696 | ||
1697 | insn = bfd_get_32 (info->abfd, pos); | |
1698 | insn = (insn & 0xffe00000) | (29 << 16); | |
1699 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos); | |
b34976b6 | 1700 | info->changed_contents = TRUE; |
9e756d64 RH |
1701 | |
1702 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1703 | R_ALPHA_GPREL16); | |
b34976b6 | 1704 | info->changed_relocs = TRUE; |
9e756d64 RH |
1705 | } |
1706 | ||
b34976b6 | 1707 | return TRUE; |
9e756d64 RH |
1708 | } |
1709 | ||
b34976b6 | 1710 | static bfd_boolean |
9e756d64 RH |
1711 | elf64_alpha_relax_tls_get_addr (info, symval, irel, is_gd) |
1712 | struct alpha_relax_info *info; | |
1713 | bfd_vma symval; | |
1714 | Elf_Internal_Rela *irel; | |
b34976b6 | 1715 | bfd_boolean is_gd; |
9e756d64 RH |
1716 | { |
1717 | bfd_byte *pos[5]; | |
1718 | unsigned int insn; | |
1719 | Elf_Internal_Rela *gpdisp, *hint; | |
1bbc9cec | 1720 | bfd_boolean dynamic, use_gottprel, pos1_unusable; |
cc03ec80 | 1721 | unsigned long new_symndx; |
9e756d64 RH |
1722 | |
1723 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); | |
1724 | ||
9e756d64 RH |
1725 | /* If a TLS symbol is accessed using IE at least once, there is no point |
1726 | to use dynamic model for it. */ | |
1727 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
1728 | ; | |
1729 | ||
1730 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, | |
1731 | then we might as well relax to IE. */ | |
1732 | else if (info->link_info->shared && !dynamic | |
1733 | && (info->link_info->flags & DF_STATIC_TLS)) | |
1734 | ; | |
1735 | ||
1736 | /* Otherwise we must be building an executable to do anything. */ | |
1737 | else if (info->link_info->shared) | |
b34976b6 | 1738 | return TRUE; |
9e756d64 RH |
1739 | |
1740 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and | |
1741 | the matching LITUSE_TLS relocations. */ | |
1742 | if (irel + 2 >= info->relend) | |
b34976b6 | 1743 | return TRUE; |
9e756d64 RH |
1744 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL |
1745 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
1746 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
b34976b6 | 1747 | return TRUE; |
9e756d64 RH |
1748 | |
1749 | /* There must be a GPDISP relocation positioned immediately after the | |
1750 | LITUSE relocation. */ | |
1751 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
1752 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
1753 | if (!gpdisp) | |
b34976b6 | 1754 | return TRUE; |
9e756d64 RH |
1755 | |
1756 | pos[0] = info->contents + irel[0].r_offset; | |
1757 | pos[1] = info->contents + irel[1].r_offset; | |
1758 | pos[2] = info->contents + irel[2].r_offset; | |
1759 | pos[3] = info->contents + gpdisp->r_offset; | |
1760 | pos[4] = pos[3] + gpdisp->r_addend; | |
1bbc9cec | 1761 | pos1_unusable = FALSE; |
9e756d64 | 1762 | |
1bbc9cec RH |
1763 | /* Generally, the positions are not allowed to be out of order, lest the |
1764 | modified insn sequence have different register lifetimes. We can make | |
1765 | an exception when pos 1 is adjacent to pos 0. */ | |
1766 | if (pos[1] + 4 == pos[0]) | |
9e756d64 RH |
1767 | { |
1768 | bfd_byte *tmp = pos[0]; | |
1769 | pos[0] = pos[1]; | |
1770 | pos[1] = tmp; | |
1771 | } | |
1bbc9cec RH |
1772 | else if (pos[1] < pos[0]) |
1773 | pos1_unusable = TRUE; | |
1774 | if (pos[1] >= pos[2] || pos[2] >= pos[3]) | |
b34976b6 | 1775 | return TRUE; |
9e756d64 RH |
1776 | |
1777 | /* Reduce the use count on the LITERAL relocation. Do this before we | |
1778 | smash the symndx when we adjust the relocations below. */ | |
1779 | { | |
1780 | struct alpha_elf_got_entry *lit_gotent; | |
1781 | struct alpha_elf_link_hash_entry *lit_h; | |
1782 | unsigned long indx; | |
1783 | ||
1784 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); | |
1785 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
1786 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
1787 | ||
1788 | while (lit_h->root.root.type == bfd_link_hash_indirect | |
1789 | || lit_h->root.root.type == bfd_link_hash_warning) | |
1790 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
1791 | ||
1792 | for (lit_gotent = lit_h->got_entries; lit_gotent ; | |
1793 | lit_gotent = lit_gotent->next) | |
1794 | if (lit_gotent->gotobj == info->gotobj | |
1795 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
1796 | && lit_gotent->addend == irel[1].r_addend) | |
1797 | break; | |
1798 | BFD_ASSERT (lit_gotent); | |
1799 | ||
1800 | if (--lit_gotent->use_count == 0) | |
1801 | { | |
1802 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
1803 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | /* Change | |
1808 | ||
1809 | lda $16,x($gp) !tlsgd!1 | |
1810 | ldq $27,__tls_get_addr($gp) !literal!1 | |
1811 | jsr $26,($27)__tls_get_addr !lituse_tlsgd!1 | |
1812 | ldah $29,0($26) !gpdisp!2 | |
1813 | lda $29,0($29) !gpdisp!2 | |
1814 | to | |
1815 | ldq $16,x($gp) !gottprel | |
1816 | unop | |
1817 | call_pal rduniq | |
1818 | addq $16,$0,$0 | |
1819 | unop | |
1820 | or the first pair to | |
1821 | lda $16,x($gp) !tprel | |
1822 | unop | |
1823 | or | |
1824 | ldah $16,x($gp) !tprelhi | |
1825 | lda $16,x($16) !tprello | |
1826 | ||
1827 | as appropriate. */ | |
1828 | ||
b34976b6 | 1829 | use_gottprel = FALSE; |
cc03ec80 | 1830 | new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0; |
9e756d64 RH |
1831 | switch (!dynamic && !info->link_info->shared) |
1832 | { | |
1833 | case 1: | |
1834 | { | |
1835 | bfd_vma tp_base; | |
1836 | bfd_signed_vma disp; | |
1837 | ||
e1918d23 AM |
1838 | BFD_ASSERT (elf_hash_table (info->link_info)->tls_sec != NULL); |
1839 | tp_base = alpha_get_tprel_base (info->link_info); | |
9e756d64 RH |
1840 | disp = symval - tp_base; |
1841 | ||
1842 | if (disp >= -0x8000 && disp < 0x8000) | |
1843 | { | |
1844 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
1845 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1846 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
1847 | ||
1848 | irel[0].r_offset = pos[0] - info->contents; | |
cc03ec80 | 1849 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPREL16); |
9e756d64 RH |
1850 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
1851 | break; | |
1852 | } | |
1853 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
1bbc9cec RH |
1854 | && disp < (bfd_signed_vma) 0x7fff8000 |
1855 | && !pos1_unusable) | |
9e756d64 RH |
1856 | { |
1857 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
1858 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1859 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
1860 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
1861 | ||
1862 | irel[0].r_offset = pos[0] - info->contents; | |
cc03ec80 | 1863 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELHI); |
9e756d64 | 1864 | irel[1].r_offset = pos[1] - info->contents; |
cc03ec80 | 1865 | irel[1].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_TPRELLO); |
9e756d64 RH |
1866 | break; |
1867 | } | |
1868 | } | |
1869 | /* FALLTHRU */ | |
1870 | ||
1871 | default: | |
b34976b6 | 1872 | use_gottprel = TRUE; |
9e756d64 RH |
1873 | |
1874 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
1875 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1876 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
1877 | ||
1878 | irel[0].r_offset = pos[0] - info->contents; | |
cc03ec80 | 1879 | irel[0].r_info = ELF64_R_INFO (new_symndx, R_ALPHA_GOTTPREL); |
9e756d64 RH |
1880 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
1881 | break; | |
1882 | } | |
1883 | ||
1884 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); | |
1885 | ||
1886 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); | |
1887 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
1888 | ||
1889 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); | |
1890 | ||
1891 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1892 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1893 | ||
1894 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
1895 | irel[2].r_offset, R_ALPHA_HINT); | |
1896 | if (hint) | |
1897 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1898 | ||
b34976b6 AM |
1899 | info->changed_contents = TRUE; |
1900 | info->changed_relocs = TRUE; | |
9e756d64 RH |
1901 | |
1902 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ | |
1903 | if (--info->gotent->use_count == 0) | |
1904 | { | |
1905 | int sz = alpha_got_entry_size (info->gotent->reloc_type); | |
1906 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1907 | if (!info->h) | |
1908 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
1909 | } | |
1910 | ||
1911 | /* If we've switched to a GOTTPREL relocation, increment the reference | |
1912 | count on that got entry. */ | |
1913 | if (use_gottprel) | |
1914 | { | |
1915 | struct alpha_elf_got_entry *tprel_gotent; | |
1916 | ||
1917 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; | |
1918 | tprel_gotent = tprel_gotent->next) | |
1919 | if (tprel_gotent->gotobj == info->gotobj | |
1920 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
1921 | && tprel_gotent->addend == irel->r_addend) | |
1922 | break; | |
1923 | if (tprel_gotent) | |
1924 | tprel_gotent->use_count++; | |
1925 | else | |
1926 | { | |
1927 | if (info->gotent->use_count == 0) | |
1928 | tprel_gotent = info->gotent; | |
1929 | else | |
1930 | { | |
1931 | tprel_gotent = (struct alpha_elf_got_entry *) | |
1932 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
1933 | if (!tprel_gotent) | |
b34976b6 | 1934 | return FALSE; |
9e756d64 RH |
1935 | |
1936 | tprel_gotent->next = *info->first_gotent; | |
1937 | *info->first_gotent = tprel_gotent; | |
1938 | ||
1939 | tprel_gotent->gotobj = info->gotobj; | |
1940 | tprel_gotent->addend = irel->r_addend; | |
1941 | tprel_gotent->got_offset = -1; | |
1942 | tprel_gotent->reloc_done = 0; | |
1943 | tprel_gotent->reloc_xlated = 0; | |
1944 | } | |
1945 | ||
1946 | tprel_gotent->use_count = 1; | |
1947 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
1948 | } | |
1949 | } | |
1950 | ||
b34976b6 | 1951 | return TRUE; |
9e756d64 RH |
1952 | } |
1953 | ||
b34976b6 | 1954 | static bfd_boolean |
252b5132 RH |
1955 | elf64_alpha_relax_section (abfd, sec, link_info, again) |
1956 | bfd *abfd; | |
1957 | asection *sec; | |
1958 | struct bfd_link_info *link_info; | |
b34976b6 | 1959 | bfd_boolean *again; |
252b5132 RH |
1960 | { |
1961 | Elf_Internal_Shdr *symtab_hdr; | |
1962 | Elf_Internal_Rela *internal_relocs; | |
252b5132 | 1963 | Elf_Internal_Rela *irel, *irelend; |
6cdc0ccc | 1964 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
1965 | struct alpha_elf_got_entry **local_got_entries; |
1966 | struct alpha_relax_info info; | |
1967 | ||
1968 | /* We are not currently changing any sizes, so only one pass. */ | |
b34976b6 | 1969 | *again = FALSE; |
252b5132 | 1970 | |
1049f94e | 1971 | if (link_info->relocatable |
252b5132 RH |
1972 | || (sec->flags & SEC_RELOC) == 0 |
1973 | || sec->reloc_count == 0) | |
b34976b6 | 1974 | return TRUE; |
252b5132 | 1975 | |
252b5132 RH |
1976 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1977 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
1978 | ||
1979 | /* Load the relocations for this section. */ | |
45d6a902 | 1980 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
1981 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
1982 | link_info->keep_memory)); | |
1983 | if (internal_relocs == NULL) | |
b34976b6 | 1984 | return FALSE; |
252b5132 | 1985 | |
fe8bc63d | 1986 | memset(&info, 0, sizeof (info)); |
252b5132 RH |
1987 | info.abfd = abfd; |
1988 | info.sec = sec; | |
1989 | info.link_info = link_info; | |
9e756d64 | 1990 | info.symtab_hdr = symtab_hdr; |
252b5132 RH |
1991 | info.relocs = internal_relocs; |
1992 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
1993 | ||
cedb70c5 | 1994 | /* Find the GP for this object. Do not store the result back via |
b646261c | 1995 | _bfd_set_gp_value, since this could change again before final. */ |
252b5132 RH |
1996 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; |
1997 | if (info.gotobj) | |
1998 | { | |
1999 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; | |
b646261c RH |
2000 | info.gp = (sgot->output_section->vma |
2001 | + sgot->output_offset | |
2002 | + 0x8000); | |
252b5132 RH |
2003 | } |
2004 | ||
9e756d64 RH |
2005 | /* Get the section contents. */ |
2006 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2007 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
2008 | else | |
252b5132 | 2009 | { |
eea6121a | 2010 | if (!bfd_malloc_and_get_section (abfd, sec, &info.contents)) |
9e756d64 RH |
2011 | goto error_return; |
2012 | } | |
252b5132 | 2013 | |
9e756d64 RH |
2014 | for (irel = internal_relocs; irel < irelend; irel++) |
2015 | { | |
2016 | bfd_vma symval; | |
9e756d64 RH |
2017 | struct alpha_elf_got_entry *gotent; |
2018 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
cc03ec80 | 2019 | unsigned long r_symndx = ELF64_R_SYM (irel->r_info); |
9e756d64 RH |
2020 | |
2021 | /* Early exit for unhandled or unrelaxable relocations. */ | |
2022 | switch (r_type) | |
2023 | { | |
2024 | case R_ALPHA_LITERAL: | |
2025 | case R_ALPHA_GPRELHIGH: | |
2026 | case R_ALPHA_GPRELLOW: | |
2027 | case R_ALPHA_GOTDTPREL: | |
2028 | case R_ALPHA_GOTTPREL: | |
2029 | case R_ALPHA_TLSGD: | |
cc03ec80 RH |
2030 | break; |
2031 | ||
9e756d64 | 2032 | case R_ALPHA_TLSLDM: |
cc03ec80 RH |
2033 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
2034 | reloc to the 0 symbol so that they all match. */ | |
2035 | r_symndx = 0; | |
9e756d64 | 2036 | break; |
cc03ec80 | 2037 | |
9e756d64 RH |
2038 | default: |
2039 | continue; | |
252b5132 RH |
2040 | } |
2041 | ||
2042 | /* Get the value of the symbol referred to by the reloc. */ | |
cc03ec80 | 2043 | if (r_symndx < symtab_hdr->sh_info) |
252b5132 RH |
2044 | { |
2045 | /* A local symbol. */ | |
6cdc0ccc AM |
2046 | Elf_Internal_Sym *isym; |
2047 | ||
2048 | /* Read this BFD's local symbols. */ | |
2049 | if (isymbuf == NULL) | |
2050 | { | |
2051 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2052 | if (isymbuf == NULL) | |
2053 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2054 | symtab_hdr->sh_info, 0, | |
2055 | NULL, NULL, NULL); | |
2056 | if (isymbuf == NULL) | |
2057 | goto error_return; | |
2058 | } | |
2059 | ||
cc03ec80 RH |
2060 | isym = isymbuf + r_symndx; |
2061 | ||
2062 | /* Given the symbol for a TLSLDM reloc is ignored, this also | |
2063 | means forcing the symbol value to the tp base. */ | |
2064 | if (r_type == R_ALPHA_TLSLDM) | |
2065 | { | |
2066 | info.tsec = bfd_abs_section_ptr; | |
e1918d23 | 2067 | symval = alpha_get_tprel_base (info.link_info); |
cc03ec80 | 2068 | } |
fe8bc63d | 2069 | else |
cc03ec80 RH |
2070 | { |
2071 | symval = isym->st_value; | |
2072 | if (isym->st_shndx == SHN_UNDEF) | |
2073 | continue; | |
2074 | else if (isym->st_shndx == SHN_ABS) | |
2075 | info.tsec = bfd_abs_section_ptr; | |
2076 | else if (isym->st_shndx == SHN_COMMON) | |
2077 | info.tsec = bfd_com_section_ptr; | |
2078 | else | |
2079 | info.tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2080 | } | |
252b5132 RH |
2081 | |
2082 | info.h = NULL; | |
6cdc0ccc | 2083 | info.other = isym->st_other; |
c328dc3f JJ |
2084 | if (local_got_entries) |
2085 | info.first_gotent = &local_got_entries[r_symndx]; | |
2086 | else | |
2087 | { | |
2088 | info.first_gotent = &info.gotent; | |
2089 | info.gotent = NULL; | |
2090 | } | |
252b5132 RH |
2091 | } |
2092 | else | |
2093 | { | |
2094 | unsigned long indx; | |
2095 | struct alpha_elf_link_hash_entry *h; | |
2096 | ||
cc03ec80 | 2097 | indx = r_symndx - symtab_hdr->sh_info; |
252b5132 RH |
2098 | h = alpha_elf_sym_hashes (abfd)[indx]; |
2099 | BFD_ASSERT (h != NULL); | |
2100 | ||
2101 | while (h->root.root.type == bfd_link_hash_indirect | |
2102 | || h->root.root.type == bfd_link_hash_warning) | |
2103 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2104 | ||
4a67a098 RH |
2105 | /* If the symbol is undefined, we can't do anything with it. */ |
2106 | if (h->root.root.type == bfd_link_hash_undefweak | |
2107 | || h->root.root.type == bfd_link_hash_undefined) | |
2108 | continue; | |
2109 | ||
2110 | /* If the symbol isn't defined in the current module, again | |
2111 | we can't do anything. */ | |
f5385ebf | 2112 | if (!h->root.def_regular) |
cc03ec80 RH |
2113 | { |
2114 | /* Except for TLSGD relocs, which can sometimes be | |
2115 | relaxed to GOTTPREL relocs. */ | |
2116 | if (r_type != R_ALPHA_TLSGD) | |
2117 | continue; | |
2118 | info.tsec = bfd_abs_section_ptr; | |
2119 | symval = 0; | |
2120 | } | |
2121 | else | |
2122 | { | |
2123 | info.tsec = h->root.root.u.def.section; | |
2124 | symval = h->root.root.u.def.value; | |
2125 | } | |
4a67a098 | 2126 | |
252b5132 | 2127 | info.h = h; |
252b5132 | 2128 | info.other = h->root.other; |
9e756d64 | 2129 | info.first_gotent = &h->got_entries; |
252b5132 RH |
2130 | } |
2131 | ||
2132 | /* Search for the got entry to be used by this relocation. */ | |
9e756d64 RH |
2133 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) |
2134 | if (gotent->gotobj == info.gotobj | |
2135 | && gotent->reloc_type == r_type | |
2136 | && gotent->addend == irel->r_addend) | |
2137 | break; | |
252b5132 RH |
2138 | info.gotent = gotent; |
2139 | ||
2140 | symval += info.tsec->output_section->vma + info.tsec->output_offset; | |
2141 | symval += irel->r_addend; | |
2142 | ||
9e756d64 RH |
2143 | switch (r_type) |
2144 | { | |
2145 | case R_ALPHA_LITERAL: | |
2146 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 2147 | |
9e756d64 RH |
2148 | /* If there exist LITUSE relocations immediately following, this |
2149 | opens up all sorts of interesting optimizations, because we | |
2150 | now know every location that this address load is used. */ | |
2151 | if (irel+1 < irelend | |
2152 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
2153 | { | |
2154 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) | |
2155 | goto error_return; | |
2156 | } | |
2157 | else | |
2158 | { | |
2159 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
2160 | goto error_return; | |
2161 | } | |
2162 | break; | |
252b5132 | 2163 | |
9e756d64 RH |
2164 | case R_ALPHA_GPRELHIGH: |
2165 | case R_ALPHA_GPRELLOW: | |
2166 | if (!elf64_alpha_relax_gprelhilo (&info, symval, irel, | |
2167 | r_type == R_ALPHA_GPRELHIGH)) | |
252b5132 | 2168 | goto error_return; |
9e756d64 RH |
2169 | break; |
2170 | ||
2171 | case R_ALPHA_GOTDTPREL: | |
2172 | case R_ALPHA_GOTTPREL: | |
2173 | BFD_ASSERT(info.gotent != NULL); | |
2174 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
252b5132 | 2175 | goto error_return; |
9e756d64 RH |
2176 | break; |
2177 | ||
2178 | case R_ALPHA_TLSGD: | |
2179 | case R_ALPHA_TLSLDM: | |
2180 | BFD_ASSERT(info.gotent != NULL); | |
2181 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
2182 | r_type == R_ALPHA_TLSGD)) | |
2183 | goto error_return; | |
2184 | break; | |
252b5132 RH |
2185 | } |
2186 | } | |
2187 | ||
f44f99a5 | 2188 | if (!elf64_alpha_size_plt_section (link_info)) |
b34976b6 | 2189 | return FALSE; |
f44f99a5 | 2190 | if (!elf64_alpha_size_got_sections (link_info)) |
b34976b6 | 2191 | return FALSE; |
f44f99a5 | 2192 | if (!elf64_alpha_size_rela_got_section (link_info)) |
b34976b6 | 2193 | return FALSE; |
252b5132 | 2194 | |
6cdc0ccc AM |
2195 | if (isymbuf != NULL |
2196 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2197 | { | |
2198 | if (!link_info->keep_memory) | |
2199 | free (isymbuf); | |
2200 | else | |
2201 | { | |
2202 | /* Cache the symbols for elf_link_input_bfd. */ | |
2203 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
2204 | } | |
2205 | } | |
252b5132 | 2206 | |
6cdc0ccc AM |
2207 | if (info.contents != NULL |
2208 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
252b5132 | 2209 | { |
6cdc0ccc AM |
2210 | if (!info.changed_contents && !link_info->keep_memory) |
2211 | free (info.contents); | |
252b5132 RH |
2212 | else |
2213 | { | |
2214 | /* Cache the section contents for elf_link_input_bfd. */ | |
2215 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
2216 | } | |
2217 | } | |
2218 | ||
6cdc0ccc | 2219 | if (elf_section_data (sec)->relocs != internal_relocs) |
252b5132 | 2220 | { |
6cdc0ccc AM |
2221 | if (!info.changed_relocs) |
2222 | free (internal_relocs); | |
252b5132 | 2223 | else |
6cdc0ccc | 2224 | elf_section_data (sec)->relocs = internal_relocs; |
252b5132 RH |
2225 | } |
2226 | ||
2227 | *again = info.changed_contents || info.changed_relocs; | |
2228 | ||
b34976b6 | 2229 | return TRUE; |
252b5132 RH |
2230 | |
2231 | error_return: | |
6cdc0ccc AM |
2232 | if (isymbuf != NULL |
2233 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
2234 | free (isymbuf); | |
2235 | if (info.contents != NULL | |
2236 | && elf_section_data (sec)->this_hdr.contents != info.contents) | |
2237 | free (info.contents); | |
2238 | if (internal_relocs != NULL | |
2239 | && elf_section_data (sec)->relocs != internal_relocs) | |
2240 | free (internal_relocs); | |
b34976b6 | 2241 | return FALSE; |
252b5132 RH |
2242 | } |
2243 | \f | |
2244 | /* PLT/GOT Stuff */ | |
2245 | #define PLT_HEADER_SIZE 32 | |
dc810e39 AM |
2246 | #define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */ |
2247 | #define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */ | |
2248 | #define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */ | |
2249 | #define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */ | |
252b5132 RH |
2250 | |
2251 | #define PLT_ENTRY_SIZE 12 | |
2252 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ | |
2253 | #define PLT_ENTRY_WORD2 0 | |
2254 | #define PLT_ENTRY_WORD3 0 | |
2255 | ||
3765b1be | 2256 | #define MAX_GOT_SIZE (64*1024) |
252b5132 RH |
2257 | |
2258 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
2259 | \f | |
2260 | /* Handle an Alpha specific section when reading an object file. This | |
6dc132d9 L |
2261 | is called when bfd_section_from_shdr finds a section with an unknown |
2262 | type. | |
252b5132 RH |
2263 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure |
2264 | how to. */ | |
2265 | ||
b34976b6 | 2266 | static bfd_boolean |
6dc132d9 L |
2267 | elf64_alpha_section_from_shdr (bfd *abfd, |
2268 | Elf_Internal_Shdr *hdr, | |
2269 | const char *name, | |
2270 | int shindex) | |
252b5132 RH |
2271 | { |
2272 | asection *newsect; | |
2273 | ||
2274 | /* There ought to be a place to keep ELF backend specific flags, but | |
2275 | at the moment there isn't one. We just keep track of the | |
2276 | sections by their name, instead. Fortunately, the ABI gives | |
2277 | suggested names for all the MIPS specific sections, so we will | |
2278 | probably get away with this. */ | |
2279 | switch (hdr->sh_type) | |
2280 | { | |
2281 | case SHT_ALPHA_DEBUG: | |
2282 | if (strcmp (name, ".mdebug") != 0) | |
b34976b6 | 2283 | return FALSE; |
252b5132 | 2284 | break; |
252b5132 | 2285 | default: |
b34976b6 | 2286 | return FALSE; |
252b5132 RH |
2287 | } |
2288 | ||
6dc132d9 | 2289 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
b34976b6 | 2290 | return FALSE; |
252b5132 RH |
2291 | newsect = hdr->bfd_section; |
2292 | ||
2293 | if (hdr->sh_type == SHT_ALPHA_DEBUG) | |
2294 | { | |
2295 | if (! bfd_set_section_flags (abfd, newsect, | |
2296 | (bfd_get_section_flags (abfd, newsect) | |
2297 | | SEC_DEBUGGING))) | |
b34976b6 | 2298 | return FALSE; |
252b5132 RH |
2299 | } |
2300 | ||
b34976b6 | 2301 | return TRUE; |
252b5132 RH |
2302 | } |
2303 | ||
204692d7 RH |
2304 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
2305 | ||
b34976b6 | 2306 | static bfd_boolean |
204692d7 RH |
2307 | elf64_alpha_section_flags (flags, hdr) |
2308 | flagword *flags; | |
1829f4b2 | 2309 | const Elf_Internal_Shdr *hdr; |
204692d7 RH |
2310 | { |
2311 | if (hdr->sh_flags & SHF_ALPHA_GPREL) | |
2312 | *flags |= SEC_SMALL_DATA; | |
2313 | ||
b34976b6 | 2314 | return TRUE; |
204692d7 RH |
2315 | } |
2316 | ||
252b5132 RH |
2317 | /* Set the correct type for an Alpha ELF section. We do this by the |
2318 | section name, which is a hack, but ought to work. */ | |
2319 | ||
b34976b6 | 2320 | static bfd_boolean |
252b5132 RH |
2321 | elf64_alpha_fake_sections (abfd, hdr, sec) |
2322 | bfd *abfd; | |
947216bf | 2323 | Elf_Internal_Shdr *hdr; |
252b5132 RH |
2324 | asection *sec; |
2325 | { | |
2326 | register const char *name; | |
2327 | ||
2328 | name = bfd_get_section_name (abfd, sec); | |
2329 | ||
2330 | if (strcmp (name, ".mdebug") == 0) | |
2331 | { | |
2332 | hdr->sh_type = SHT_ALPHA_DEBUG; | |
2333 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
2334 | entsize of 0. FIXME: Does this matter? */ | |
2335 | if ((abfd->flags & DYNAMIC) != 0 ) | |
2336 | hdr->sh_entsize = 0; | |
2337 | else | |
2338 | hdr->sh_entsize = 1; | |
2339 | } | |
204692d7 RH |
2340 | else if ((sec->flags & SEC_SMALL_DATA) |
2341 | || strcmp (name, ".sdata") == 0 | |
252b5132 RH |
2342 | || strcmp (name, ".sbss") == 0 |
2343 | || strcmp (name, ".lit4") == 0 | |
2344 | || strcmp (name, ".lit8") == 0) | |
2345 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
2346 | ||
b34976b6 | 2347 | return TRUE; |
252b5132 RH |
2348 | } |
2349 | ||
2350 | /* Hook called by the linker routine which adds symbols from an object | |
2351 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
2352 | ||
b34976b6 | 2353 | static bfd_boolean |
252b5132 RH |
2354 | elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
2355 | bfd *abfd; | |
2356 | struct bfd_link_info *info; | |
555cd476 | 2357 | Elf_Internal_Sym *sym; |
56fc028e AJ |
2358 | const char **namep ATTRIBUTE_UNUSED; |
2359 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
2360 | asection **secp; |
2361 | bfd_vma *valp; | |
2362 | { | |
2363 | if (sym->st_shndx == SHN_COMMON | |
1049f94e | 2364 | && !info->relocatable |
c0846b23 | 2365 | && sym->st_size <= elf_gp_size (abfd)) |
252b5132 RH |
2366 | { |
2367 | /* Common symbols less than or equal to -G nn bytes are | |
2368 | automatically put into .sbss. */ | |
2369 | ||
2370 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
2371 | ||
2372 | if (scomm == NULL) | |
2373 | { | |
2374 | scomm = bfd_make_section (abfd, ".scommon"); | |
2375 | if (scomm == NULL | |
2376 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC | |
2377 | | SEC_IS_COMMON | |
2378 | | SEC_LINKER_CREATED))) | |
b34976b6 | 2379 | return FALSE; |
252b5132 RH |
2380 | } |
2381 | ||
2382 | *secp = scomm; | |
2383 | *valp = sym->st_size; | |
2384 | } | |
2385 | ||
b34976b6 | 2386 | return TRUE; |
252b5132 RH |
2387 | } |
2388 | ||
2389 | /* Create the .got section. */ | |
2390 | ||
b34976b6 | 2391 | static bfd_boolean |
252b5132 RH |
2392 | elf64_alpha_create_got_section(abfd, info) |
2393 | bfd *abfd; | |
56fc028e | 2394 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
2395 | { |
2396 | asection *s; | |
2397 | ||
61bcf373 DJ |
2398 | if ((s = bfd_get_section_by_name (abfd, ".got"))) |
2399 | { | |
2400 | /* Check for a non-linker created .got? */ | |
2401 | if (alpha_elf_tdata (abfd)->got == NULL) | |
2402 | alpha_elf_tdata (abfd)->got = s; | |
2403 | return TRUE; | |
2404 | } | |
252b5132 RH |
2405 | |
2406 | s = bfd_make_section (abfd, ".got"); | |
2407 | if (s == NULL | |
2408 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2409 | | SEC_HAS_CONTENTS | |
2410 | | SEC_IN_MEMORY | |
2411 | | SEC_LINKER_CREATED)) | |
2412 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2413 | return FALSE; |
252b5132 RH |
2414 | |
2415 | alpha_elf_tdata (abfd)->got = s; | |
2416 | ||
b34976b6 | 2417 | return TRUE; |
252b5132 RH |
2418 | } |
2419 | ||
2420 | /* Create all the dynamic sections. */ | |
2421 | ||
b34976b6 | 2422 | static bfd_boolean |
252b5132 RH |
2423 | elf64_alpha_create_dynamic_sections (abfd, info) |
2424 | bfd *abfd; | |
2425 | struct bfd_link_info *info; | |
2426 | { | |
2427 | asection *s; | |
2428 | struct elf_link_hash_entry *h; | |
14a793b2 | 2429 | struct bfd_link_hash_entry *bh; |
252b5132 RH |
2430 | |
2431 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ | |
2432 | ||
2433 | s = bfd_make_section (abfd, ".plt"); | |
2434 | if (s == NULL | |
2435 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2436 | | SEC_HAS_CONTENTS | |
2437 | | SEC_IN_MEMORY | |
2438 | | SEC_LINKER_CREATED | |
2439 | | SEC_CODE)) | |
2440 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2441 | return FALSE; |
252b5132 RH |
2442 | |
2443 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
2444 | .plt section. */ | |
14a793b2 | 2445 | bh = NULL; |
252b5132 RH |
2446 | if (! (_bfd_generic_link_add_one_symbol |
2447 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
b34976b6 | 2448 | (bfd_vma) 0, (const char *) NULL, FALSE, |
14a793b2 | 2449 | get_elf_backend_data (abfd)->collect, &bh))) |
b34976b6 | 2450 | return FALSE; |
14a793b2 | 2451 | h = (struct elf_link_hash_entry *) bh; |
f5385ebf | 2452 | h->def_regular = 1; |
252b5132 RH |
2453 | h->type = STT_OBJECT; |
2454 | ||
2455 | if (info->shared | |
c152c796 | 2456 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2457 | return FALSE; |
252b5132 RH |
2458 | |
2459 | s = bfd_make_section (abfd, ".rela.plt"); | |
2460 | if (s == NULL | |
2461 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2462 | | SEC_HAS_CONTENTS | |
2463 | | SEC_IN_MEMORY | |
2464 | | SEC_LINKER_CREATED | |
2465 | | SEC_READONLY)) | |
2466 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2467 | return FALSE; |
252b5132 RH |
2468 | |
2469 | /* We may or may not have created a .got section for this object, but | |
2470 | we definitely havn't done the rest of the work. */ | |
2471 | ||
2472 | if (!elf64_alpha_create_got_section (abfd, info)) | |
b34976b6 | 2473 | return FALSE; |
252b5132 RH |
2474 | |
2475 | s = bfd_make_section(abfd, ".rela.got"); | |
2476 | if (s == NULL | |
2477 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2478 | | SEC_HAS_CONTENTS | |
2479 | | SEC_IN_MEMORY | |
2480 | | SEC_LINKER_CREATED | |
2481 | | SEC_READONLY)) | |
2482 | || !bfd_set_section_alignment (abfd, s, 3)) | |
b34976b6 | 2483 | return FALSE; |
252b5132 RH |
2484 | |
2485 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the | |
2486 | dynobj's .got section. We don't do this in the linker script | |
2487 | because we don't want to define the symbol if we are not creating | |
2488 | a global offset table. */ | |
14a793b2 | 2489 | bh = NULL; |
252b5132 RH |
2490 | if (!(_bfd_generic_link_add_one_symbol |
2491 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
2492 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
b34976b6 AM |
2493 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
2494 | return FALSE; | |
14a793b2 | 2495 | h = (struct elf_link_hash_entry *) bh; |
f5385ebf | 2496 | h->def_regular = 1; |
252b5132 RH |
2497 | h->type = STT_OBJECT; |
2498 | ||
2499 | if (info->shared | |
c152c796 | 2500 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2501 | return FALSE; |
252b5132 RH |
2502 | |
2503 | elf_hash_table (info)->hgot = h; | |
2504 | ||
b34976b6 | 2505 | return TRUE; |
252b5132 RH |
2506 | } |
2507 | \f | |
2508 | /* Read ECOFF debugging information from a .mdebug section into a | |
2509 | ecoff_debug_info structure. */ | |
2510 | ||
b34976b6 | 2511 | static bfd_boolean |
252b5132 RH |
2512 | elf64_alpha_read_ecoff_info (abfd, section, debug) |
2513 | bfd *abfd; | |
2514 | asection *section; | |
2515 | struct ecoff_debug_info *debug; | |
2516 | { | |
2517 | HDRR *symhdr; | |
2518 | const struct ecoff_debug_swap *swap; | |
2519 | char *ext_hdr = NULL; | |
2520 | ||
2521 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
fe8bc63d | 2522 | memset (debug, 0, sizeof (*debug)); |
252b5132 | 2523 | |
dc810e39 | 2524 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
252b5132 RH |
2525 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
2526 | goto error_return; | |
2527 | ||
82e51918 AM |
2528 | if (! bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
2529 | swap->external_hdr_size)) | |
252b5132 RH |
2530 | goto error_return; |
2531 | ||
2532 | symhdr = &debug->symbolic_header; | |
2533 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
2534 | ||
2535 | /* The symbolic header contains absolute file offsets and sizes to | |
2536 | read. */ | |
2537 | #define READ(ptr, offset, count, size, type) \ | |
2538 | if (symhdr->count == 0) \ | |
2539 | debug->ptr = NULL; \ | |
2540 | else \ | |
2541 | { \ | |
dc810e39 AM |
2542 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ |
2543 | debug->ptr = (type) bfd_malloc (amt); \ | |
252b5132 RH |
2544 | if (debug->ptr == NULL) \ |
2545 | goto error_return; \ | |
2546 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
dc810e39 | 2547 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
252b5132 RH |
2548 | goto error_return; \ |
2549 | } | |
2550 | ||
2551 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
2552 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
2553 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
2554 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
2555 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
2556 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
2557 | union aux_ext *); | |
2558 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
2559 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
2560 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
2561 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
2562 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
2563 | #undef READ | |
2564 | ||
2565 | debug->fdr = NULL; | |
252b5132 | 2566 | |
b34976b6 | 2567 | return TRUE; |
252b5132 RH |
2568 | |
2569 | error_return: | |
2570 | if (ext_hdr != NULL) | |
2571 | free (ext_hdr); | |
2572 | if (debug->line != NULL) | |
2573 | free (debug->line); | |
2574 | if (debug->external_dnr != NULL) | |
2575 | free (debug->external_dnr); | |
2576 | if (debug->external_pdr != NULL) | |
2577 | free (debug->external_pdr); | |
2578 | if (debug->external_sym != NULL) | |
2579 | free (debug->external_sym); | |
2580 | if (debug->external_opt != NULL) | |
2581 | free (debug->external_opt); | |
2582 | if (debug->external_aux != NULL) | |
2583 | free (debug->external_aux); | |
2584 | if (debug->ss != NULL) | |
2585 | free (debug->ss); | |
2586 | if (debug->ssext != NULL) | |
2587 | free (debug->ssext); | |
2588 | if (debug->external_fdr != NULL) | |
2589 | free (debug->external_fdr); | |
2590 | if (debug->external_rfd != NULL) | |
2591 | free (debug->external_rfd); | |
2592 | if (debug->external_ext != NULL) | |
2593 | free (debug->external_ext); | |
b34976b6 | 2594 | return FALSE; |
252b5132 RH |
2595 | } |
2596 | ||
2597 | /* Alpha ELF local labels start with '$'. */ | |
2598 | ||
b34976b6 | 2599 | static bfd_boolean |
252b5132 | 2600 | elf64_alpha_is_local_label_name (abfd, name) |
56fc028e | 2601 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2602 | const char *name; |
2603 | { | |
2604 | return name[0] == '$'; | |
2605 | } | |
2606 | ||
2607 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line | |
2608 | routine in order to handle the ECOFF debugging information. We | |
2609 | still call this mips_elf_find_line because of the slot | |
2610 | find_line_info in elf_obj_tdata is declared that way. */ | |
2611 | ||
2612 | struct mips_elf_find_line | |
2613 | { | |
2614 | struct ecoff_debug_info d; | |
2615 | struct ecoff_find_line i; | |
2616 | }; | |
2617 | ||
b34976b6 | 2618 | static bfd_boolean |
252b5132 RH |
2619 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, |
2620 | functionname_ptr, line_ptr) | |
2621 | bfd *abfd; | |
2622 | asection *section; | |
2623 | asymbol **symbols; | |
2624 | bfd_vma offset; | |
2625 | const char **filename_ptr; | |
2626 | const char **functionname_ptr; | |
2627 | unsigned int *line_ptr; | |
2628 | { | |
2629 | asection *msec; | |
2630 | ||
95404643 RH |
2631 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
2632 | filename_ptr, functionname_ptr, | |
2633 | line_ptr, 0, | |
2634 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
b34976b6 | 2635 | return TRUE; |
95404643 | 2636 | |
252b5132 RH |
2637 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
2638 | if (msec != NULL) | |
2639 | { | |
2640 | flagword origflags; | |
2641 | struct mips_elf_find_line *fi; | |
2642 | const struct ecoff_debug_swap * const swap = | |
2643 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
2644 | ||
2645 | /* If we are called during a link, alpha_elf_final_link may have | |
2646 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
2647 | if appropriate (which it normally will be). */ | |
2648 | origflags = msec->flags; | |
2649 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
2650 | msec->flags |= SEC_HAS_CONTENTS; | |
2651 | ||
2652 | fi = elf_tdata (abfd)->find_line_info; | |
2653 | if (fi == NULL) | |
2654 | { | |
2655 | bfd_size_type external_fdr_size; | |
2656 | char *fraw_src; | |
2657 | char *fraw_end; | |
2658 | struct fdr *fdr_ptr; | |
dc810e39 | 2659 | bfd_size_type amt = sizeof (struct mips_elf_find_line); |
252b5132 | 2660 | |
dc810e39 | 2661 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
252b5132 RH |
2662 | if (fi == NULL) |
2663 | { | |
2664 | msec->flags = origflags; | |
b34976b6 | 2665 | return FALSE; |
252b5132 RH |
2666 | } |
2667 | ||
2668 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) | |
2669 | { | |
2670 | msec->flags = origflags; | |
b34976b6 | 2671 | return FALSE; |
252b5132 RH |
2672 | } |
2673 | ||
2674 | /* Swap in the FDR information. */ | |
dc810e39 AM |
2675 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); |
2676 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
252b5132 RH |
2677 | if (fi->d.fdr == NULL) |
2678 | { | |
2679 | msec->flags = origflags; | |
b34976b6 | 2680 | return FALSE; |
252b5132 RH |
2681 | } |
2682 | external_fdr_size = swap->external_fdr_size; | |
2683 | fdr_ptr = fi->d.fdr; | |
2684 | fraw_src = (char *) fi->d.external_fdr; | |
2685 | fraw_end = (fraw_src | |
2686 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
2687 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2688 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
2689 | ||
2690 | elf_tdata (abfd)->find_line_info = fi; | |
2691 | ||
2692 | /* Note that we don't bother to ever free this information. | |
2693 | find_nearest_line is either called all the time, as in | |
2694 | objdump -l, so the information should be saved, or it is | |
2695 | rarely called, as in ld error messages, so the memory | |
2696 | wasted is unimportant. Still, it would probably be a | |
2697 | good idea for free_cached_info to throw it away. */ | |
2698 | } | |
2699 | ||
2700 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
2701 | &fi->i, filename_ptr, functionname_ptr, | |
2702 | line_ptr)) | |
2703 | { | |
2704 | msec->flags = origflags; | |
b34976b6 | 2705 | return TRUE; |
252b5132 RH |
2706 | } |
2707 | ||
2708 | msec->flags = origflags; | |
2709 | } | |
2710 | ||
2711 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
2712 | ||
2713 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
2714 | filename_ptr, functionname_ptr, | |
2715 | line_ptr); | |
2716 | } | |
2717 | \f | |
2718 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
2719 | ||
2720 | struct extsym_info | |
2721 | { | |
2722 | bfd *abfd; | |
2723 | struct bfd_link_info *info; | |
2724 | struct ecoff_debug_info *debug; | |
2725 | const struct ecoff_debug_swap *swap; | |
b34976b6 | 2726 | bfd_boolean failed; |
252b5132 RH |
2727 | }; |
2728 | ||
b34976b6 | 2729 | static bfd_boolean |
252b5132 RH |
2730 | elf64_alpha_output_extsym (h, data) |
2731 | struct alpha_elf_link_hash_entry *h; | |
2732 | PTR data; | |
2733 | { | |
2734 | struct extsym_info *einfo = (struct extsym_info *) data; | |
b34976b6 | 2735 | bfd_boolean strip; |
252b5132 RH |
2736 | asection *sec, *output_section; |
2737 | ||
e92d460e AM |
2738 | if (h->root.root.type == bfd_link_hash_warning) |
2739 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2740 | ||
252b5132 | 2741 | if (h->root.indx == -2) |
b34976b6 | 2742 | strip = FALSE; |
77cfaee6 AM |
2743 | else if ((h->root.def_dynamic |
2744 | || h->root.ref_dynamic | |
2745 | || h->root.root.type == bfd_link_hash_new) | |
f5385ebf AM |
2746 | && !h->root.def_regular |
2747 | && !h->root.ref_regular) | |
b34976b6 | 2748 | strip = TRUE; |
252b5132 | 2749 | else if (einfo->info->strip == strip_all |
e92d460e AM |
2750 | || (einfo->info->strip == strip_some |
2751 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2752 | h->root.root.root.string, | |
b34976b6 AM |
2753 | FALSE, FALSE) == NULL)) |
2754 | strip = TRUE; | |
252b5132 | 2755 | else |
b34976b6 | 2756 | strip = FALSE; |
252b5132 RH |
2757 | |
2758 | if (strip) | |
b34976b6 | 2759 | return TRUE; |
252b5132 RH |
2760 | |
2761 | if (h->esym.ifd == -2) | |
2762 | { | |
2763 | h->esym.jmptbl = 0; | |
2764 | h->esym.cobol_main = 0; | |
2765 | h->esym.weakext = 0; | |
2766 | h->esym.reserved = 0; | |
2767 | h->esym.ifd = ifdNil; | |
2768 | h->esym.asym.value = 0; | |
2769 | h->esym.asym.st = stGlobal; | |
2770 | ||
2771 | if (h->root.root.type != bfd_link_hash_defined | |
e92d460e AM |
2772 | && h->root.root.type != bfd_link_hash_defweak) |
2773 | h->esym.asym.sc = scAbs; | |
252b5132 | 2774 | else |
e92d460e AM |
2775 | { |
2776 | const char *name; | |
2777 | ||
2778 | sec = h->root.root.u.def.section; | |
2779 | output_section = sec->output_section; | |
2780 | ||
2781 | /* When making a shared library and symbol h is the one from | |
2782 | the another shared library, OUTPUT_SECTION may be null. */ | |
2783 | if (output_section == NULL) | |
2784 | h->esym.asym.sc = scUndefined; | |
2785 | else | |
2786 | { | |
2787 | name = bfd_section_name (output_section->owner, output_section); | |
2788 | ||
2789 | if (strcmp (name, ".text") == 0) | |
2790 | h->esym.asym.sc = scText; | |
2791 | else if (strcmp (name, ".data") == 0) | |
2792 | h->esym.asym.sc = scData; | |
2793 | else if (strcmp (name, ".sdata") == 0) | |
2794 | h->esym.asym.sc = scSData; | |
2795 | else if (strcmp (name, ".rodata") == 0 | |
2796 | || strcmp (name, ".rdata") == 0) | |
2797 | h->esym.asym.sc = scRData; | |
2798 | else if (strcmp (name, ".bss") == 0) | |
2799 | h->esym.asym.sc = scBss; | |
2800 | else if (strcmp (name, ".sbss") == 0) | |
2801 | h->esym.asym.sc = scSBss; | |
2802 | else if (strcmp (name, ".init") == 0) | |
2803 | h->esym.asym.sc = scInit; | |
2804 | else if (strcmp (name, ".fini") == 0) | |
2805 | h->esym.asym.sc = scFini; | |
2806 | else | |
2807 | h->esym.asym.sc = scAbs; | |
2808 | } | |
2809 | } | |
252b5132 RH |
2810 | |
2811 | h->esym.asym.reserved = 0; | |
2812 | h->esym.asym.index = indexNil; | |
2813 | } | |
2814 | ||
2815 | if (h->root.root.type == bfd_link_hash_common) | |
2816 | h->esym.asym.value = h->root.root.u.c.size; | |
2817 | else if (h->root.root.type == bfd_link_hash_defined | |
2818 | || h->root.root.type == bfd_link_hash_defweak) | |
2819 | { | |
2820 | if (h->esym.asym.sc == scCommon) | |
e92d460e | 2821 | h->esym.asym.sc = scBss; |
252b5132 | 2822 | else if (h->esym.asym.sc == scSCommon) |
e92d460e | 2823 | h->esym.asym.sc = scSBss; |
252b5132 RH |
2824 | |
2825 | sec = h->root.root.u.def.section; | |
2826 | output_section = sec->output_section; | |
2827 | if (output_section != NULL) | |
e92d460e AM |
2828 | h->esym.asym.value = (h->root.root.u.def.value |
2829 | + sec->output_offset | |
2830 | + output_section->vma); | |
252b5132 | 2831 | else |
e92d460e | 2832 | h->esym.asym.value = 0; |
252b5132 | 2833 | } |
f5385ebf | 2834 | else if (h->root.needs_plt) |
252b5132 RH |
2835 | { |
2836 | /* Set type and value for a symbol with a function stub. */ | |
2837 | h->esym.asym.st = stProc; | |
2838 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); | |
2839 | if (sec == NULL) | |
2840 | h->esym.asym.value = 0; | |
2841 | else | |
2842 | { | |
2843 | output_section = sec->output_section; | |
2844 | if (output_section != NULL) | |
2845 | h->esym.asym.value = (h->root.plt.offset | |
2846 | + sec->output_offset | |
2847 | + output_section->vma); | |
2848 | else | |
2849 | h->esym.asym.value = 0; | |
2850 | } | |
252b5132 RH |
2851 | } |
2852 | ||
2853 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
e92d460e AM |
2854 | h->root.root.root.string, |
2855 | &h->esym)) | |
252b5132 | 2856 | { |
b34976b6 AM |
2857 | einfo->failed = TRUE; |
2858 | return FALSE; | |
252b5132 RH |
2859 | } |
2860 | ||
b34976b6 | 2861 | return TRUE; |
252b5132 | 2862 | } |
252b5132 | 2863 | \f |
3765b1be RH |
2864 | /* Search for and possibly create a got entry. */ |
2865 | ||
2866 | static struct alpha_elf_got_entry * | |
2867 | get_got_entry (abfd, h, r_type, r_symndx, r_addend) | |
2868 | bfd *abfd; | |
2869 | struct alpha_elf_link_hash_entry *h; | |
2870 | unsigned long r_type, r_symndx; | |
2871 | bfd_vma r_addend; | |
2872 | { | |
2873 | struct alpha_elf_got_entry *gotent; | |
2874 | struct alpha_elf_got_entry **slot; | |
2875 | ||
2876 | if (h) | |
2877 | slot = &h->got_entries; | |
2878 | else | |
2879 | { | |
2880 | /* This is a local .got entry -- record for merge. */ | |
2881 | ||
2882 | struct alpha_elf_got_entry **local_got_entries; | |
2883 | ||
2884 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2885 | if (!local_got_entries) | |
2886 | { | |
2887 | bfd_size_type size; | |
2888 | Elf_Internal_Shdr *symtab_hdr; | |
2889 | ||
2890 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
2891 | size = symtab_hdr->sh_info; | |
2892 | size *= sizeof (struct alpha_elf_got_entry *); | |
2893 | ||
2894 | local_got_entries | |
9bab7074 | 2895 | = (struct alpha_elf_got_entry **) bfd_zalloc (abfd, size); |
3765b1be RH |
2896 | if (!local_got_entries) |
2897 | return NULL; | |
2898 | ||
3765b1be RH |
2899 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; |
2900 | } | |
2901 | ||
2902 | slot = &local_got_entries[r_symndx]; | |
2903 | } | |
2904 | ||
2905 | for (gotent = *slot; gotent ; gotent = gotent->next) | |
2906 | if (gotent->gotobj == abfd | |
2907 | && gotent->reloc_type == r_type | |
2908 | && gotent->addend == r_addend) | |
2909 | break; | |
2910 | ||
2911 | if (!gotent) | |
2912 | { | |
2913 | int entry_size; | |
2914 | bfd_size_type amt; | |
2915 | ||
2916 | amt = sizeof (struct alpha_elf_got_entry); | |
2917 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
2918 | if (!gotent) | |
2919 | return NULL; | |
2920 | ||
2921 | gotent->gotobj = abfd; | |
2922 | gotent->addend = r_addend; | |
2923 | gotent->got_offset = -1; | |
2924 | gotent->use_count = 1; | |
2925 | gotent->reloc_type = r_type; | |
2926 | gotent->reloc_done = 0; | |
2927 | gotent->reloc_xlated = 0; | |
2928 | ||
2929 | gotent->next = *slot; | |
2930 | *slot = gotent; | |
2931 | ||
2932 | entry_size = alpha_got_entry_size (r_type); | |
2933 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
2934 | if (!h) | |
2935 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
2936 | } | |
2937 | else | |
2938 | gotent->use_count += 1; | |
2939 | ||
2940 | return gotent; | |
2941 | } | |
2942 | ||
252b5132 RH |
2943 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
2944 | ||
b34976b6 | 2945 | static bfd_boolean |
252b5132 RH |
2946 | elf64_alpha_check_relocs (abfd, info, sec, relocs) |
2947 | bfd *abfd; | |
2948 | struct bfd_link_info *info; | |
2949 | asection *sec; | |
2950 | const Elf_Internal_Rela *relocs; | |
2951 | { | |
2952 | bfd *dynobj; | |
2953 | asection *sreloc; | |
2954 | const char *rel_sec_name; | |
2955 | Elf_Internal_Shdr *symtab_hdr; | |
2956 | struct alpha_elf_link_hash_entry **sym_hashes; | |
252b5132 | 2957 | const Elf_Internal_Rela *rel, *relend; |
b34976b6 | 2958 | bfd_boolean got_created; |
dc810e39 | 2959 | bfd_size_type amt; |
252b5132 | 2960 | |
1049f94e | 2961 | if (info->relocatable) |
b34976b6 | 2962 | return TRUE; |
252b5132 RH |
2963 | |
2964 | dynobj = elf_hash_table(info)->dynobj; | |
2965 | if (dynobj == NULL) | |
2966 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
2967 | ||
2968 | sreloc = NULL; | |
2969 | rel_sec_name = NULL; | |
2970 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
2971 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
b34976b6 | 2972 | got_created = FALSE; |
252b5132 RH |
2973 | |
2974 | relend = relocs + sec->reloc_count; | |
2975 | for (rel = relocs; rel < relend; ++rel) | |
2976 | { | |
3765b1be RH |
2977 | enum { |
2978 | NEED_GOT = 1, | |
2979 | NEED_GOT_ENTRY = 2, | |
2980 | NEED_DYNREL = 4 | |
2981 | }; | |
2982 | ||
252b5132 RH |
2983 | unsigned long r_symndx, r_type; |
2984 | struct alpha_elf_link_hash_entry *h; | |
3765b1be | 2985 | unsigned int gotent_flags; |
b34976b6 | 2986 | bfd_boolean maybe_dynamic; |
3765b1be RH |
2987 | unsigned int need; |
2988 | bfd_vma addend; | |
252b5132 RH |
2989 | |
2990 | r_symndx = ELF64_R_SYM (rel->r_info); | |
2991 | if (r_symndx < symtab_hdr->sh_info) | |
2992 | h = NULL; | |
2993 | else | |
2994 | { | |
2995 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2996 | ||
2997 | while (h->root.root.type == bfd_link_hash_indirect | |
2998 | || h->root.root.type == bfd_link_hash_warning) | |
2999 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3000 | ||
f5385ebf | 3001 | h->root.ref_regular = 1; |
252b5132 | 3002 | } |
3765b1be RH |
3003 | |
3004 | /* We can only get preliminary data on whether a symbol is | |
3005 | locally or externally defined, as not all of the input files | |
3006 | have yet been processed. Do something with what we know, as | |
3007 | this may help reduce memory usage and processing time later. */ | |
b34976b6 | 3008 | maybe_dynamic = FALSE; |
3765b1be | 3009 | if (h && ((info->shared |
560e09e9 | 3010 | && (!info->symbolic || info->unresolved_syms_in_shared_libs == RM_IGNORE)) |
f5385ebf | 3011 | || !h->root.def_regular |
c853d7f6 | 3012 | || h->root.root.type == bfd_link_hash_defweak)) |
b34976b6 | 3013 | maybe_dynamic = TRUE; |
3765b1be RH |
3014 | |
3015 | need = 0; | |
3016 | gotent_flags = 0; | |
252b5132 | 3017 | r_type = ELF64_R_TYPE (rel->r_info); |
3765b1be | 3018 | addend = rel->r_addend; |
252b5132 RH |
3019 | |
3020 | switch (r_type) | |
3021 | { | |
3022 | case R_ALPHA_LITERAL: | |
3765b1be RH |
3023 | need = NEED_GOT | NEED_GOT_ENTRY; |
3024 | ||
3025 | /* Remember how this literal is used from its LITUSEs. | |
3026 | This will be important when it comes to decide if we can | |
3027 | create a .plt entry for a function symbol. */ | |
3028 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
3029 | if (rel->r_addend >= 1 && rel->r_addend <= 5) | |
3030 | gotent_flags |= 1 << rel->r_addend; | |
3031 | --rel; | |
3032 | ||
3033 | /* No LITUSEs -- presumably the address is used somehow. */ | |
3034 | if (gotent_flags == 0) | |
3035 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
3036 | break; | |
252b5132 RH |
3037 | |
3038 | case R_ALPHA_GPDISP: | |
dfe57ca0 | 3039 | case R_ALPHA_GPREL16: |
252b5132 RH |
3040 | case R_ALPHA_GPREL32: |
3041 | case R_ALPHA_GPRELHIGH: | |
3042 | case R_ALPHA_GPRELLOW: | |
7793f4d0 | 3043 | case R_ALPHA_BRSGP: |
3765b1be RH |
3044 | need = NEED_GOT; |
3045 | break; | |
3046 | ||
3047 | case R_ALPHA_REFLONG: | |
3048 | case R_ALPHA_REFQUAD: | |
475c2a7e | 3049 | if ((info->shared && (sec->flags & SEC_ALLOC)) || maybe_dynamic) |
3765b1be RH |
3050 | need = NEED_DYNREL; |
3051 | break; | |
3052 | ||
3765b1be | 3053 | case R_ALPHA_TLSLDM: |
cc03ec80 RH |
3054 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
3055 | reloc to the 0 symbol so that they all match. */ | |
3056 | r_symndx = 0; | |
3057 | h = 0; | |
3058 | maybe_dynamic = FALSE; | |
3059 | /* FALLTHRU */ | |
3060 | ||
3061 | case R_ALPHA_TLSGD: | |
3765b1be RH |
3062 | case R_ALPHA_GOTDTPREL: |
3063 | need = NEED_GOT | NEED_GOT_ENTRY; | |
3064 | break; | |
3065 | ||
3066 | case R_ALPHA_GOTTPREL: | |
3067 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 3068 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; |
3765b1be RH |
3069 | if (info->shared) |
3070 | info->flags |= DF_STATIC_TLS; | |
3071 | break; | |
3072 | ||
3073 | case R_ALPHA_TPREL64: | |
3074 | if (info->shared || maybe_dynamic) | |
3075 | need = NEED_DYNREL; | |
3076 | if (info->shared) | |
3077 | info->flags |= DF_STATIC_TLS; | |
3078 | break; | |
3079 | } | |
3080 | ||
3081 | if (need & NEED_GOT) | |
3082 | { | |
252b5132 RH |
3083 | if (!got_created) |
3084 | { | |
3085 | if (!elf64_alpha_create_got_section (abfd, info)) | |
b34976b6 | 3086 | return FALSE; |
252b5132 RH |
3087 | |
3088 | /* Make sure the object's gotobj is set to itself so | |
3089 | that we default to every object with its own .got. | |
3090 | We'll merge .gots later once we've collected each | |
3091 | object's info. */ | |
3092 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
3093 | ||
3094 | got_created = 1; | |
3095 | } | |
3765b1be | 3096 | } |
252b5132 | 3097 | |
3765b1be RH |
3098 | if (need & NEED_GOT_ENTRY) |
3099 | { | |
3100 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 3101 | |
3765b1be RH |
3102 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
3103 | if (!gotent) | |
b34976b6 | 3104 | return FALSE; |
3765b1be RH |
3105 | |
3106 | if (gotent_flags) | |
3107 | { | |
3108 | gotent->flags |= gotent_flags; | |
3109 | if (h) | |
3110 | { | |
3111 | gotent_flags |= h->flags; | |
3112 | h->flags = gotent_flags; | |
3113 | ||
3114 | /* Make a guess as to whether a .plt entry is needed. */ | |
3115 | if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
3116 | && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
f5385ebf | 3117 | h->root.needs_plt = 1; |
3765b1be | 3118 | else |
f5385ebf | 3119 | h->root.needs_plt = 0; |
3765b1be RH |
3120 | } |
3121 | } | |
3122 | } | |
3123 | ||
3124 | if (need & NEED_DYNREL) | |
3125 | { | |
252b5132 RH |
3126 | if (rel_sec_name == NULL) |
3127 | { | |
3128 | rel_sec_name = (bfd_elf_string_from_elf_section | |
3129 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
3130 | elf_section_data(sec)->rel_hdr.sh_name)); | |
3131 | if (rel_sec_name == NULL) | |
b34976b6 | 3132 | return FALSE; |
252b5132 RH |
3133 | |
3134 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
3135 | && strcmp (bfd_get_section_name (abfd, sec), | |
3136 | rel_sec_name+5) == 0); | |
3137 | } | |
3138 | ||
3139 | /* We need to create the section here now whether we eventually | |
3140 | use it or not so that it gets mapped to an output section by | |
3141 | the linker. If not used, we'll kill it in | |
3142 | size_dynamic_sections. */ | |
3143 | if (sreloc == NULL) | |
3144 | { | |
3145 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); | |
3146 | if (sreloc == NULL) | |
3147 | { | |
dc810e39 AM |
3148 | flagword flags; |
3149 | ||
252b5132 | 3150 | sreloc = bfd_make_section (dynobj, rel_sec_name); |
dc810e39 AM |
3151 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY |
3152 | | SEC_LINKER_CREATED | SEC_READONLY); | |
3153 | if (sec->flags & SEC_ALLOC) | |
3154 | flags |= SEC_ALLOC | SEC_LOAD; | |
252b5132 | 3155 | if (sreloc == NULL |
dc810e39 | 3156 | || !bfd_set_section_flags (dynobj, sreloc, flags) |
252b5132 | 3157 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 3158 | return FALSE; |
252b5132 RH |
3159 | } |
3160 | } | |
3161 | ||
3162 | if (h) | |
3163 | { | |
3164 | /* Since we havn't seen all of the input symbols yet, we | |
3165 | don't know whether we'll actually need a dynamic relocation | |
3166 | entry for this reloc. So make a record of it. Once we | |
3167 | find out if this thing needs dynamic relocation we'll | |
fe8bc63d | 3168 | expand the relocation sections by the appropriate amount. */ |
252b5132 RH |
3169 | |
3170 | struct alpha_elf_reloc_entry *rent; | |
3171 | ||
3172 | for (rent = h->reloc_entries; rent; rent = rent->next) | |
3173 | if (rent->rtype == r_type && rent->srel == sreloc) | |
3174 | break; | |
3175 | ||
3176 | if (!rent) | |
3177 | { | |
dc810e39 AM |
3178 | amt = sizeof (struct alpha_elf_reloc_entry); |
3179 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
252b5132 | 3180 | if (!rent) |
b34976b6 | 3181 | return FALSE; |
252b5132 RH |
3182 | |
3183 | rent->srel = sreloc; | |
3184 | rent->rtype = r_type; | |
3185 | rent->count = 1; | |
73896efb RH |
3186 | rent->reltext = ((sec->flags & (SEC_READONLY | SEC_ALLOC)) |
3187 | == (SEC_READONLY | SEC_ALLOC)); | |
252b5132 RH |
3188 | |
3189 | rent->next = h->reloc_entries; | |
3190 | h->reloc_entries = rent; | |
3191 | } | |
3192 | else | |
3193 | rent->count++; | |
3194 | } | |
c853d7f6 | 3195 | else if (info->shared) |
252b5132 | 3196 | { |
c555c5c5 AM |
3197 | /* If this is a shared library, and the section is to be |
3198 | loaded into memory, we need a RELATIVE reloc. */ | |
eea6121a | 3199 | sreloc->size += sizeof (Elf64_External_Rela); |
c853d7f6 RH |
3200 | if ((sec->flags & (SEC_READONLY | SEC_ALLOC)) |
3201 | == (SEC_READONLY | SEC_ALLOC)) | |
fcfbdf31 | 3202 | info->flags |= DF_TEXTREL; |
252b5132 | 3203 | } |
252b5132 RH |
3204 | } |
3205 | } | |
3206 | ||
b34976b6 | 3207 | return TRUE; |
252b5132 RH |
3208 | } |
3209 | ||
3210 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3211 | regular object. The current definition is in some section of the | |
3212 | dynamic object, but we're not including those sections. We have to | |
3213 | change the definition to something the rest of the link can | |
3214 | understand. */ | |
3215 | ||
b34976b6 | 3216 | static bfd_boolean |
252b5132 RH |
3217 | elf64_alpha_adjust_dynamic_symbol (info, h) |
3218 | struct bfd_link_info *info; | |
3219 | struct elf_link_hash_entry *h; | |
3220 | { | |
3221 | bfd *dynobj; | |
3222 | asection *s; | |
3223 | struct alpha_elf_link_hash_entry *ah; | |
3224 | ||
3225 | dynobj = elf_hash_table(info)->dynobj; | |
3226 | ah = (struct alpha_elf_link_hash_entry *)h; | |
3227 | ||
3228 | /* Now that we've seen all of the input symbols, finalize our decision | |
3229 | about whether this symbol should get a .plt entry. */ | |
3230 | ||
8ba89f17 | 3231 | if (alpha_elf_dynamic_symbol_p (h, info) |
252b5132 RH |
3232 | && ((h->type == STT_FUNC |
3233 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
3234 | || (h->type == STT_NOTYPE | |
3765b1be RH |
3235 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC) |
3236 | && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))) | |
252b5132 RH |
3237 | /* Don't prevent otherwise valid programs from linking by attempting |
3238 | to create a new .got entry somewhere. A Correct Solution would be | |
3239 | to add a new .got section to a new object file and let it be merged | |
3240 | somewhere later. But for now don't bother. */ | |
3241 | && ah->got_entries) | |
3242 | { | |
f5385ebf | 3243 | h->needs_plt = 1; |
252b5132 RH |
3244 | |
3245 | s = bfd_get_section_by_name(dynobj, ".plt"); | |
3246 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 3247 | return FALSE; |
252b5132 RH |
3248 | |
3249 | /* The first bit of the .plt is reserved. */ | |
eea6121a AM |
3250 | if (s->size == 0) |
3251 | s->size = PLT_HEADER_SIZE; | |
252b5132 | 3252 | |
eea6121a AM |
3253 | h->plt.offset = s->size; |
3254 | s->size += PLT_ENTRY_SIZE; | |
252b5132 RH |
3255 | |
3256 | /* If this symbol is not defined in a regular file, and we are not | |
3257 | generating a shared library, then set the symbol to the location | |
3258 | in the .plt. This is required to make function pointers compare | |
3259 | equal between the normal executable and the shared library. */ | |
3260 | if (! info->shared | |
3261 | && h->root.type != bfd_link_hash_defweak) | |
3262 | { | |
cc03ec80 RH |
3263 | ah->plt_old_section = h->root.u.def.section; |
3264 | ah->plt_old_value = h->root.u.def.value; | |
3265 | ah->flags |= ALPHA_ELF_LINK_HASH_PLT_LOC; | |
252b5132 RH |
3266 | h->root.u.def.section = s; |
3267 | h->root.u.def.value = h->plt.offset; | |
3268 | } | |
3269 | ||
3270 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ | |
3271 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3272 | BFD_ASSERT (s != NULL); | |
eea6121a | 3273 | s->size += sizeof (Elf64_External_Rela); |
252b5132 | 3274 | |
b34976b6 | 3275 | return TRUE; |
252b5132 RH |
3276 | } |
3277 | else | |
f5385ebf | 3278 | h->needs_plt = 0; |
252b5132 RH |
3279 | |
3280 | /* If this is a weak symbol, and there is a real definition, the | |
3281 | processor independent code will have arranged for us to see the | |
3282 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 3283 | if (h->u.weakdef != NULL) |
252b5132 | 3284 | { |
f6e332e6 AM |
3285 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
3286 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3287 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3288 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 3289 | return TRUE; |
252b5132 RH |
3290 | } |
3291 | ||
3292 | /* This is a reference to a symbol defined by a dynamic object which | |
3293 | is not a function. The Alpha, since it uses .got entries for all | |
3294 | symbols even in regular objects, does not need the hackery of a | |
3295 | .dynbss section and COPY dynamic relocations. */ | |
3296 | ||
b34976b6 | 3297 | return TRUE; |
252b5132 RH |
3298 | } |
3299 | ||
3300 | /* Symbol versioning can create new symbols, and make our old symbols | |
3301 | indirect to the new ones. Consolidate the got and reloc information | |
3302 | in these situations. */ | |
3303 | ||
b34976b6 | 3304 | static bfd_boolean |
252b5132 RH |
3305 | elf64_alpha_merge_ind_symbols (hi, dummy) |
3306 | struct alpha_elf_link_hash_entry *hi; | |
56fc028e | 3307 | PTR dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
3308 | { |
3309 | struct alpha_elf_link_hash_entry *hs; | |
3310 | ||
3311 | if (hi->root.root.type != bfd_link_hash_indirect) | |
b34976b6 | 3312 | return TRUE; |
252b5132 RH |
3313 | hs = hi; |
3314 | do { | |
3315 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
3316 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
3317 | ||
3318 | /* Merge the flags. Whee. */ | |
3319 | ||
3320 | hs->flags |= hi->flags; | |
3321 | ||
3322 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
3323 | doing so, since we don't need it anymore. */ | |
3324 | ||
3325 | if (hs->got_entries == NULL) | |
3326 | hs->got_entries = hi->got_entries; | |
3327 | else | |
3328 | { | |
3329 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
3330 | ||
3331 | gsh = hs->got_entries; | |
3332 | for (gi = hi->got_entries; gi ; gi = gin) | |
3333 | { | |
3334 | gin = gi->next; | |
3335 | for (gs = gsh; gs ; gs = gs->next) | |
3765b1be RH |
3336 | if (gi->gotobj == gs->gotobj |
3337 | && gi->reloc_type == gs->reloc_type | |
3338 | && gi->addend == gs->addend) | |
3339 | { | |
3340 | gi->use_count += gs->use_count; | |
3341 | goto got_found; | |
3342 | } | |
252b5132 RH |
3343 | gi->next = hs->got_entries; |
3344 | hs->got_entries = gi; | |
3345 | got_found:; | |
3346 | } | |
3347 | } | |
3348 | hi->got_entries = NULL; | |
3349 | ||
3350 | /* And similar for the reloc entries. */ | |
3351 | ||
3352 | if (hs->reloc_entries == NULL) | |
3353 | hs->reloc_entries = hi->reloc_entries; | |
3354 | else | |
3355 | { | |
3356 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
3357 | ||
3358 | rsh = hs->reloc_entries; | |
3359 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
3360 | { | |
3361 | rin = ri->next; | |
3362 | for (rs = rsh; rs ; rs = rs->next) | |
82988bff | 3363 | if (ri->rtype == rs->rtype && ri->srel == rs->srel) |
252b5132 RH |
3364 | { |
3365 | rs->count += ri->count; | |
3366 | goto found_reloc; | |
3367 | } | |
3368 | ri->next = hs->reloc_entries; | |
3369 | hs->reloc_entries = ri; | |
3370 | found_reloc:; | |
3371 | } | |
3372 | } | |
3373 | hi->reloc_entries = NULL; | |
3374 | ||
b34976b6 | 3375 | return TRUE; |
252b5132 RH |
3376 | } |
3377 | ||
3378 | /* Is it possible to merge two object file's .got tables? */ | |
3379 | ||
b34976b6 | 3380 | static bfd_boolean |
252b5132 RH |
3381 | elf64_alpha_can_merge_gots (a, b) |
3382 | bfd *a, *b; | |
3383 | { | |
3765b1be | 3384 | int total = alpha_elf_tdata (a)->total_got_size; |
252b5132 RH |
3385 | bfd *bsub; |
3386 | ||
3387 | /* Trivial quick fallout test. */ | |
3765b1be | 3388 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) |
b34976b6 | 3389 | return TRUE; |
252b5132 RH |
3390 | |
3391 | /* By their nature, local .got entries cannot be merged. */ | |
3765b1be | 3392 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) |
b34976b6 | 3393 | return FALSE; |
252b5132 RH |
3394 | |
3395 | /* Failing the common trivial comparison, we must effectively | |
3396 | perform the merge. Not actually performing the merge means that | |
3397 | we don't have to store undo information in case we fail. */ | |
3398 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
3399 | { | |
3400 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
3401 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
3402 | int i, n; | |
3403 | ||
d9bc7a44 | 3404 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
3405 | for (i = 0; i < n; ++i) |
3406 | { | |
3407 | struct alpha_elf_got_entry *ae, *be; | |
3408 | struct alpha_elf_link_hash_entry *h; | |
3409 | ||
3410 | h = hashes[i]; | |
3411 | while (h->root.root.type == bfd_link_hash_indirect | |
3412 | || h->root.root.type == bfd_link_hash_warning) | |
3413 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3414 | ||
3415 | for (be = h->got_entries; be ; be = be->next) | |
3416 | { | |
3417 | if (be->use_count == 0) | |
3418 | continue; | |
3419 | if (be->gotobj != b) | |
3420 | continue; | |
3421 | ||
3422 | for (ae = h->got_entries; ae ; ae = ae->next) | |
3765b1be RH |
3423 | if (ae->gotobj == a |
3424 | && ae->reloc_type == be->reloc_type | |
3425 | && ae->addend == be->addend) | |
252b5132 RH |
3426 | goto global_found; |
3427 | ||
3765b1be RH |
3428 | total += alpha_got_entry_size (be->reloc_type); |
3429 | if (total > MAX_GOT_SIZE) | |
b34976b6 | 3430 | return FALSE; |
252b5132 RH |
3431 | global_found:; |
3432 | } | |
3433 | } | |
3434 | } | |
3435 | ||
b34976b6 | 3436 | return TRUE; |
252b5132 RH |
3437 | } |
3438 | ||
3439 | /* Actually merge two .got tables. */ | |
3440 | ||
3441 | static void | |
3442 | elf64_alpha_merge_gots (a, b) | |
3443 | bfd *a, *b; | |
3444 | { | |
3765b1be | 3445 | int total = alpha_elf_tdata (a)->total_got_size; |
252b5132 RH |
3446 | bfd *bsub; |
3447 | ||
3448 | /* Remember local expansion. */ | |
3449 | { | |
3765b1be | 3450 | int e = alpha_elf_tdata (b)->local_got_size; |
252b5132 | 3451 | total += e; |
3765b1be | 3452 | alpha_elf_tdata (a)->local_got_size += e; |
252b5132 RH |
3453 | } |
3454 | ||
3455 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
3456 | { | |
3457 | struct alpha_elf_got_entry **local_got_entries; | |
3458 | struct alpha_elf_link_hash_entry **hashes; | |
3459 | Elf_Internal_Shdr *symtab_hdr; | |
3460 | int i, n; | |
3461 | ||
3462 | /* Let the local .got entries know they are part of a new subsegment. */ | |
3463 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
3464 | if (local_got_entries) | |
3465 | { | |
3466 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
3467 | for (i = 0; i < n; ++i) | |
3468 | { | |
3469 | struct alpha_elf_got_entry *ent; | |
3470 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
3471 | ent->gotobj = a; | |
3472 | } | |
3473 | } | |
3474 | ||
3475 | /* Merge the global .got entries. */ | |
3476 | hashes = alpha_elf_sym_hashes (bsub); | |
3477 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
3478 | ||
d9bc7a44 | 3479 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
3480 | for (i = 0; i < n; ++i) |
3481 | { | |
3482 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
3483 | struct alpha_elf_link_hash_entry *h; | |
3484 | ||
3485 | h = hashes[i]; | |
3486 | while (h->root.root.type == bfd_link_hash_indirect | |
3487 | || h->root.root.type == bfd_link_hash_warning) | |
3488 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3489 | ||
3490 | start = &h->got_entries; | |
3491 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) | |
3492 | { | |
3493 | if (be->use_count == 0) | |
3494 | { | |
3495 | *pbe = be->next; | |
3496 | continue; | |
3497 | } | |
3498 | if (be->gotobj != b) | |
3499 | continue; | |
3500 | ||
3501 | for (ae = *start; ae ; ae = ae->next) | |
3765b1be RH |
3502 | if (ae->gotobj == a |
3503 | && ae->reloc_type == be->reloc_type | |
3504 | && ae->addend == be->addend) | |
252b5132 RH |
3505 | { |
3506 | ae->flags |= be->flags; | |
3507 | ae->use_count += be->use_count; | |
3508 | *pbe = be->next; | |
3509 | goto global_found; | |
3510 | } | |
3511 | be->gotobj = a; | |
3765b1be | 3512 | total += alpha_got_entry_size (be->reloc_type); |
252b5132 RH |
3513 | |
3514 | global_found:; | |
3515 | } | |
3516 | } | |
3517 | ||
3518 | alpha_elf_tdata (bsub)->gotobj = a; | |
3519 | } | |
3765b1be | 3520 | alpha_elf_tdata (a)->total_got_size = total; |
252b5132 RH |
3521 | |
3522 | /* Merge the two in_got chains. */ | |
3523 | { | |
3524 | bfd *next; | |
3525 | ||
3526 | bsub = a; | |
3527 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
3528 | bsub = next; | |
3529 | ||
3530 | alpha_elf_tdata (bsub)->in_got_link_next = b; | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | /* Calculate the offsets for the got entries. */ | |
3535 | ||
b34976b6 | 3536 | static bfd_boolean |
252b5132 RH |
3537 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) |
3538 | struct alpha_elf_link_hash_entry *h; | |
52b9d213 | 3539 | PTR arg ATTRIBUTE_UNUSED; |
252b5132 | 3540 | { |
0d5f9994 | 3541 | bfd_boolean result = TRUE; |
252b5132 RH |
3542 | struct alpha_elf_got_entry *gotent; |
3543 | ||
e92d460e AM |
3544 | if (h->root.root.type == bfd_link_hash_warning) |
3545 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3546 | ||
252b5132 RH |
3547 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
3548 | if (gotent->use_count > 0) | |
3549 | { | |
0d5f9994 NC |
3550 | struct alpha_elf_obj_tdata *td; |
3551 | bfd_size_type *plge; | |
252b5132 | 3552 | |
0d5f9994 NC |
3553 | td = alpha_elf_tdata (gotent->gotobj); |
3554 | if (td == NULL) | |
3555 | { | |
3556 | _bfd_error_handler (_("Symbol %s has no GOT subsection for offset 0x%x"), | |
3557 | h->root.root.root.string, gotent->got_offset); | |
3558 | result = FALSE; | |
3559 | continue; | |
3560 | } | |
eea6121a | 3561 | plge = &td->got->size; |
252b5132 | 3562 | gotent->got_offset = *plge; |
3765b1be | 3563 | *plge += alpha_got_entry_size (gotent->reloc_type); |
252b5132 RH |
3564 | } |
3565 | ||
0d5f9994 | 3566 | return result; |
252b5132 RH |
3567 | } |
3568 | ||
3569 | static void | |
3570 | elf64_alpha_calc_got_offsets (info) | |
3571 | struct bfd_link_info *info; | |
3572 | { | |
3573 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
3574 | ||
3575 | /* First, zero out the .got sizes, as we may be recalculating the | |
3576 | .got after optimizing it. */ | |
3577 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
eea6121a | 3578 | alpha_elf_tdata(i)->got->size = 0; |
252b5132 RH |
3579 | |
3580 | /* Next, fill in the offsets for all the global entries. */ | |
3581 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3582 | elf64_alpha_calc_got_offsets_for_symbol, | |
3583 | NULL); | |
3584 | ||
3585 | /* Finally, fill in the offsets for the local entries. */ | |
3586 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3587 | { | |
eea6121a | 3588 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->size; |
252b5132 RH |
3589 | bfd *j; |
3590 | ||
3591 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
3592 | { | |
3593 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
3594 | int k, n; | |
3595 | ||
3596 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
3597 | if (!local_got_entries) | |
3598 | continue; | |
3599 | ||
3600 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
3601 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
3602 | if (gotent->use_count > 0) | |
3603 | { | |
3604 | gotent->got_offset = got_offset; | |
3765b1be | 3605 | got_offset += alpha_got_entry_size (gotent->reloc_type); |
252b5132 RH |
3606 | } |
3607 | } | |
3608 | ||
eea6121a | 3609 | alpha_elf_tdata(i)->got->size = got_offset; |
252b5132 RH |
3610 | } |
3611 | } | |
3612 | ||
3613 | /* Constructs the gots. */ | |
3614 | ||
b34976b6 | 3615 | static bfd_boolean |
f44f99a5 | 3616 | elf64_alpha_size_got_sections (info) |
252b5132 RH |
3617 | struct bfd_link_info *info; |
3618 | { | |
52b9d213 | 3619 | bfd *i, *got_list, *cur_got_obj = NULL; |
252b5132 RH |
3620 | int something_changed = 0; |
3621 | ||
3622 | got_list = alpha_elf_hash_table (info)->got_list; | |
3623 | ||
3624 | /* On the first time through, pretend we have an existing got list | |
3625 | consisting of all of the input files. */ | |
3626 | if (got_list == NULL) | |
3627 | { | |
3628 | for (i = info->input_bfds; i ; i = i->link_next) | |
3629 | { | |
3630 | bfd *this_got = alpha_elf_tdata (i)->gotobj; | |
3631 | if (this_got == NULL) | |
3632 | continue; | |
3633 | ||
4cc11e76 | 3634 | /* We are assuming no merging has yet occurred. */ |
252b5132 RH |
3635 | BFD_ASSERT (this_got == i); |
3636 | ||
3765b1be | 3637 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 RH |
3638 | { |
3639 | /* Yikes! A single object file has too many entries. */ | |
3640 | (*_bfd_error_handler) | |
d003868e AM |
3641 | (_("%B: .got subsegment exceeds 64K (size %d)"), |
3642 | i, alpha_elf_tdata (this_got)->total_got_size); | |
b34976b6 | 3643 | return FALSE; |
252b5132 RH |
3644 | } |
3645 | ||
3646 | if (got_list == NULL) | |
3647 | got_list = this_got; | |
3648 | else | |
3649 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
3650 | cur_got_obj = this_got; | |
3651 | } | |
3652 | ||
3653 | /* Strange degenerate case of no got references. */ | |
3654 | if (got_list == NULL) | |
b34976b6 | 3655 | return TRUE; |
252b5132 RH |
3656 | |
3657 | alpha_elf_hash_table (info)->got_list = got_list; | |
3658 | ||
3659 | /* Force got offsets to be recalculated. */ | |
3660 | something_changed = 1; | |
3661 | } | |
3662 | ||
3663 | cur_got_obj = got_list; | |
3664 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
3665 | while (i != NULL) | |
3666 | { | |
3667 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
3668 | { | |
3669 | elf64_alpha_merge_gots (cur_got_obj, i); | |
3670 | i = alpha_elf_tdata(i)->got_link_next; | |
3671 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
3672 | something_changed = 1; | |
3673 | } | |
3674 | else | |
3675 | { | |
3676 | cur_got_obj = i; | |
3677 | i = alpha_elf_tdata(i)->got_link_next; | |
3678 | } | |
3679 | } | |
3680 | ||
3681 | /* Once the gots have been merged, fill in the got offsets for | |
3682 | everything therein. */ | |
3683 | if (1 || something_changed) | |
3684 | elf64_alpha_calc_got_offsets (info); | |
3685 | ||
b34976b6 | 3686 | return TRUE; |
252b5132 RH |
3687 | } |
3688 | ||
cedb70c5 | 3689 | /* Called from relax_section to rebuild the PLT in light of |
f44f99a5 RH |
3690 | potential changes in the function's status. */ |
3691 | ||
b34976b6 | 3692 | static bfd_boolean |
f44f99a5 RH |
3693 | elf64_alpha_size_plt_section (info) |
3694 | struct bfd_link_info *info; | |
3695 | { | |
3696 | asection *splt, *spltrel; | |
3697 | unsigned long entries; | |
3698 | bfd *dynobj; | |
3699 | ||
3700 | dynobj = elf_hash_table(info)->dynobj; | |
3701 | splt = bfd_get_section_by_name(dynobj, ".plt"); | |
3702 | if (splt == NULL) | |
b34976b6 | 3703 | return TRUE; |
f44f99a5 | 3704 | |
eea6121a | 3705 | splt->size = 0; |
f44f99a5 RH |
3706 | |
3707 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3708 | elf64_alpha_size_plt_section_1, splt); | |
3709 | ||
f44f99a5 RH |
3710 | /* Every plt entry requires a JMP_SLOT relocation. */ |
3711 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
eea6121a AM |
3712 | if (splt->size) |
3713 | entries = (splt->size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
f44f99a5 RH |
3714 | else |
3715 | entries = 0; | |
eea6121a | 3716 | spltrel->size = entries * sizeof (Elf64_External_Rela); |
f44f99a5 | 3717 | |
b34976b6 | 3718 | return TRUE; |
f44f99a5 RH |
3719 | } |
3720 | ||
b34976b6 | 3721 | static bfd_boolean |
f44f99a5 RH |
3722 | elf64_alpha_size_plt_section_1 (h, data) |
3723 | struct alpha_elf_link_hash_entry *h; | |
3724 | PTR data; | |
3725 | { | |
3726 | asection *splt = (asection *) data; | |
3727 | struct alpha_elf_got_entry *gotent; | |
3728 | ||
3729 | /* If we didn't need an entry before, we still don't. */ | |
f5385ebf | 3730 | if (!h->root.needs_plt) |
b34976b6 | 3731 | return TRUE; |
f44f99a5 RH |
3732 | |
3733 | /* There must still be a LITERAL got entry for the function. */ | |
3734 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
3735 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
3736 | && gotent->use_count > 0) | |
3737 | break; | |
3738 | ||
3739 | /* If there is, reset the PLT offset. If not, there's no longer | |
3740 | a need for the PLT entry. */ | |
3741 | if (gotent) | |
3742 | { | |
eea6121a AM |
3743 | if (splt->size == 0) |
3744 | splt->size = PLT_HEADER_SIZE; | |
3745 | h->root.plt.offset = splt->size; | |
3746 | splt->size += PLT_ENTRY_SIZE; | |
f44f99a5 RH |
3747 | } |
3748 | else | |
3749 | { | |
f5385ebf | 3750 | h->root.needs_plt = 0; |
f44f99a5 | 3751 | h->root.plt.offset = -1; |
cc03ec80 RH |
3752 | |
3753 | /* Undo the definition frobbing begun in adjust_dynamic_symbol. */ | |
3754 | if (h->flags & ALPHA_ELF_LINK_HASH_PLT_LOC) | |
3755 | { | |
3756 | h->root.root.u.def.section = h->plt_old_section; | |
3757 | h->root.root.u.def.value = h->plt_old_value; | |
3758 | h->flags &= ~ALPHA_ELF_LINK_HASH_PLT_LOC; | |
3759 | } | |
f44f99a5 RH |
3760 | } |
3761 | ||
b34976b6 | 3762 | return TRUE; |
f44f99a5 RH |
3763 | } |
3764 | ||
b34976b6 | 3765 | static bfd_boolean |
252b5132 | 3766 | elf64_alpha_always_size_sections (output_bfd, info) |
f44f99a5 | 3767 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3768 | struct bfd_link_info *info; |
3769 | { | |
3770 | bfd *i; | |
3771 | ||
1049f94e | 3772 | if (info->relocatable) |
b34976b6 | 3773 | return TRUE; |
252b5132 RH |
3774 | |
3775 | /* First, take care of the indirect symbols created by versioning. */ | |
3776 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3777 | elf64_alpha_merge_ind_symbols, | |
3778 | NULL); | |
3779 | ||
f44f99a5 | 3780 | if (!elf64_alpha_size_got_sections (info)) |
b34976b6 | 3781 | return FALSE; |
252b5132 RH |
3782 | |
3783 | /* Allocate space for all of the .got subsections. */ | |
3784 | i = alpha_elf_hash_table (info)->got_list; | |
3785 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3786 | { | |
3787 | asection *s = alpha_elf_tdata(i)->got; | |
eea6121a | 3788 | if (s->size > 0) |
252b5132 | 3789 | { |
eea6121a | 3790 | s->contents = (bfd_byte *) bfd_zalloc (i, s->size); |
252b5132 | 3791 | if (s->contents == NULL) |
b34976b6 | 3792 | return FALSE; |
252b5132 RH |
3793 | } |
3794 | } | |
3795 | ||
b34976b6 | 3796 | return TRUE; |
252b5132 RH |
3797 | } |
3798 | ||
3765b1be RH |
3799 | /* The number of dynamic relocations required by a static relocation. */ |
3800 | ||
3801 | static int | |
3802 | alpha_dynamic_entries_for_reloc (r_type, dynamic, shared) | |
3803 | int r_type, dynamic, shared; | |
3804 | { | |
3805 | switch (r_type) | |
3806 | { | |
3807 | /* May appear in GOT entries. */ | |
3808 | case R_ALPHA_TLSGD: | |
3809 | return (dynamic ? 2 : shared ? 1 : 0); | |
3810 | case R_ALPHA_TLSLDM: | |
3811 | return shared; | |
3812 | case R_ALPHA_LITERAL: | |
1bbc9cec | 3813 | case R_ALPHA_GOTTPREL: |
3765b1be RH |
3814 | return dynamic || shared; |
3815 | case R_ALPHA_GOTDTPREL: | |
3765b1be RH |
3816 | return dynamic; |
3817 | ||
3818 | /* May appear in data sections. */ | |
3819 | case R_ALPHA_REFLONG: | |
3820 | case R_ALPHA_REFQUAD: | |
3765b1be | 3821 | case R_ALPHA_TPREL64: |
1bbc9cec | 3822 | return dynamic || shared; |
3765b1be RH |
3823 | |
3824 | /* Everything else is illegal. We'll issue an error during | |
3825 | relocate_section. */ | |
3826 | default: | |
3827 | return 0; | |
3828 | } | |
3829 | } | |
3830 | ||
252b5132 RH |
3831 | /* Work out the sizes of the dynamic relocation entries. */ |
3832 | ||
b34976b6 | 3833 | static bfd_boolean |
252b5132 RH |
3834 | elf64_alpha_calc_dynrel_sizes (h, info) |
3835 | struct alpha_elf_link_hash_entry *h; | |
3836 | struct bfd_link_info *info; | |
3837 | { | |
b34976b6 | 3838 | bfd_boolean dynamic; |
3765b1be | 3839 | struct alpha_elf_reloc_entry *relent; |
f44f99a5 | 3840 | unsigned long entries; |
3765b1be | 3841 | |
e92d460e AM |
3842 | if (h->root.root.type == bfd_link_hash_warning) |
3843 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3844 | ||
252b5132 RH |
3845 | /* If the symbol was defined as a common symbol in a regular object |
3846 | file, and there was no definition in any dynamic object, then the | |
3847 | linker will have allocated space for the symbol in a common | |
3848 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
3849 | set. This is done for dynamic symbols in | |
3850 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
3851 | symbols, somehow. */ | |
f5385ebf AM |
3852 | if (!h->root.def_regular |
3853 | && h->root.ref_regular | |
3854 | && !h->root.def_dynamic | |
252b5132 RH |
3855 | && (h->root.root.type == bfd_link_hash_defined |
3856 | || h->root.root.type == bfd_link_hash_defweak) | |
3857 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
f5385ebf | 3858 | h->root.def_regular = 1; |
252b5132 RH |
3859 | |
3860 | /* If the symbol is dynamic, we'll need all the relocations in their | |
3861 | natural form. If this is a shared object, and it has been forced | |
3862 | local, we'll need the same number of RELATIVE relocations. */ | |
3863 | ||
3765b1be | 3864 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); |
252b5132 | 3865 | |
3765b1be RH |
3866 | for (relent = h->reloc_entries; relent; relent = relent->next) |
3867 | { | |
3868 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, | |
3869 | info->shared); | |
3870 | if (entries) | |
3871 | { | |
eea6121a | 3872 | relent->srel->size += |
3765b1be RH |
3873 | entries * sizeof (Elf64_External_Rela) * relent->count; |
3874 | if (relent->reltext) | |
3875 | info->flags |= DT_TEXTREL; | |
3876 | } | |
3877 | } | |
252b5132 | 3878 | |
b34976b6 | 3879 | return TRUE; |
f44f99a5 RH |
3880 | } |
3881 | ||
3882 | /* Set the sizes of the dynamic relocation sections. */ | |
3883 | ||
b34976b6 | 3884 | static bfd_boolean |
f44f99a5 RH |
3885 | elf64_alpha_size_rela_got_section (info) |
3886 | struct bfd_link_info *info; | |
3887 | { | |
3888 | unsigned long entries; | |
3889 | bfd *i, *dynobj; | |
3890 | asection *srel; | |
3891 | ||
3892 | /* Shared libraries often require RELATIVE relocs, and some relocs | |
3893 | require attention for the main application as well. */ | |
cedb70c5 | 3894 | |
f44f99a5 RH |
3895 | entries = 0; |
3896 | for (i = alpha_elf_hash_table(info)->got_list; | |
3897 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
3898 | { | |
3899 | bfd *j; | |
3900 | ||
3901 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
3902 | { | |
3903 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
3904 | int k, n; | |
3905 | ||
3906 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
3907 | if (!local_got_entries) | |
3908 | continue; | |
3909 | ||
3910 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
3911 | for (gotent = local_got_entries[k]; | |
3912 | gotent ; gotent = gotent->next) | |
3913 | if (gotent->use_count > 0) | |
3914 | entries += (alpha_dynamic_entries_for_reloc | |
3915 | (gotent->reloc_type, 0, info->shared)); | |
3916 | } | |
3917 | } | |
3918 | ||
3919 | dynobj = elf_hash_table(info)->dynobj; | |
3920 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3921 | if (!srel) | |
3922 | { | |
3923 | BFD_ASSERT (entries == 0); | |
b34976b6 | 3924 | return TRUE; |
f44f99a5 | 3925 | } |
eea6121a | 3926 | srel->size = sizeof (Elf64_External_Rela) * entries; |
f44f99a5 RH |
3927 | |
3928 | /* Now do the non-local symbols. */ | |
3929 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3930 | elf64_alpha_size_rela_got_1, info); | |
3931 | ||
b34976b6 | 3932 | return TRUE; |
f44f99a5 RH |
3933 | } |
3934 | ||
3935 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the | |
3936 | global symbols. */ | |
3937 | ||
b34976b6 | 3938 | static bfd_boolean |
f44f99a5 RH |
3939 | elf64_alpha_size_rela_got_1 (h, info) |
3940 | struct alpha_elf_link_hash_entry *h; | |
3941 | struct bfd_link_info *info; | |
3942 | { | |
b34976b6 | 3943 | bfd_boolean dynamic; |
f44f99a5 RH |
3944 | struct alpha_elf_got_entry *gotent; |
3945 | unsigned long entries; | |
3946 | ||
3947 | if (h->root.root.type == bfd_link_hash_warning) | |
3948 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3949 | ||
3950 | /* If the symbol is dynamic, we'll need all the relocations in their | |
3951 | natural form. If this is a shared object, and it has been forced | |
3952 | local, we'll need the same number of RELATIVE relocations. */ | |
3953 | ||
3954 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3955 | ||
3765b1be RH |
3956 | entries = 0; |
3957 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
f44f99a5 RH |
3958 | if (gotent->use_count > 0) |
3959 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
3960 | dynamic, info->shared); | |
252b5132 | 3961 | |
3765b1be RH |
3962 | /* If we are using a .plt entry, subtract one, as the first |
3963 | reference uses a .rela.plt entry instead. */ | |
3964 | if (h->root.plt.offset != MINUS_ONE) | |
3965 | entries--; | |
252b5132 | 3966 | |
3765b1be RH |
3967 | if (entries > 0) |
3968 | { | |
3969 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
3970 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3971 | BFD_ASSERT (srel != NULL); | |
eea6121a | 3972 | srel->size += sizeof (Elf64_External_Rela) * entries; |
252b5132 RH |
3973 | } |
3974 | ||
b34976b6 | 3975 | return TRUE; |
252b5132 RH |
3976 | } |
3977 | ||
3978 | /* Set the sizes of the dynamic sections. */ | |
3979 | ||
b34976b6 | 3980 | static bfd_boolean |
252b5132 | 3981 | elf64_alpha_size_dynamic_sections (output_bfd, info) |
24a35864 | 3982 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3983 | struct bfd_link_info *info; |
3984 | { | |
3985 | bfd *dynobj; | |
3986 | asection *s; | |
b34976b6 | 3987 | bfd_boolean relplt; |
252b5132 RH |
3988 | |
3989 | dynobj = elf_hash_table(info)->dynobj; | |
3990 | BFD_ASSERT(dynobj != NULL); | |
3991 | ||
3992 | if (elf_hash_table (info)->dynamic_sections_created) | |
3993 | { | |
3994 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 3995 | if (info->executable) |
252b5132 RH |
3996 | { |
3997 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3998 | BFD_ASSERT (s != NULL); | |
eea6121a | 3999 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
4000 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4001 | } | |
4002 | ||
4003 | /* Now that we've seen all of the input files, we can decide which | |
4004 | symbols need dynamic relocation entries and which don't. We've | |
4005 | collected information in check_relocs that we can now apply to | |
4006 | size the dynamic relocation sections. */ | |
4007 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
f44f99a5 | 4008 | elf64_alpha_calc_dynrel_sizes, info); |
252b5132 | 4009 | |
f44f99a5 | 4010 | elf64_alpha_size_rela_got_section (info); |
252b5132 RH |
4011 | } |
4012 | /* else we're not dynamic and by definition we don't need such things. */ | |
4013 | ||
4014 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
4015 | determined the sizes of the various dynamic sections. Allocate | |
4016 | memory for them. */ | |
b34976b6 | 4017 | relplt = FALSE; |
252b5132 RH |
4018 | for (s = dynobj->sections; s != NULL; s = s->next) |
4019 | { | |
4020 | const char *name; | |
b34976b6 | 4021 | bfd_boolean strip; |
252b5132 RH |
4022 | |
4023 | if (!(s->flags & SEC_LINKER_CREATED)) | |
4024 | continue; | |
4025 | ||
4026 | /* It's OK to base decisions on the section name, because none | |
4027 | of the dynobj section names depend upon the input files. */ | |
4028 | name = bfd_get_section_name (dynobj, s); | |
4029 | ||
4030 | /* If we don't need this section, strip it from the output file. | |
4031 | This is to handle .rela.bss and .rela.plt. We must create it | |
4032 | in create_dynamic_sections, because it must be created before | |
4033 | the linker maps input sections to output sections. The | |
4034 | linker does that before adjust_dynamic_symbol is called, and | |
4035 | it is that function which decides whether anything needs to | |
4036 | go into these sections. */ | |
4037 | ||
b34976b6 | 4038 | strip = FALSE; |
252b5132 RH |
4039 | |
4040 | if (strncmp (name, ".rela", 5) == 0) | |
4041 | { | |
eea6121a | 4042 | strip = (s->size == 0); |
252b5132 RH |
4043 | |
4044 | if (!strip) | |
4045 | { | |
252b5132 | 4046 | if (strcmp(name, ".rela.plt") == 0) |
b34976b6 | 4047 | relplt = TRUE; |
252b5132 RH |
4048 | |
4049 | /* We use the reloc_count field as a counter if we need | |
4050 | to copy relocs into the output file. */ | |
4051 | s->reloc_count = 0; | |
4052 | } | |
4053 | } | |
4054 | else if (strcmp (name, ".plt") != 0) | |
4055 | { | |
4056 | /* It's not one of our dynamic sections, so don't allocate space. */ | |
4057 | continue; | |
4058 | } | |
4059 | ||
4060 | if (strip) | |
8423293d | 4061 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
4062 | else |
4063 | { | |
4064 | /* Allocate memory for the section contents. */ | |
eea6121a AM |
4065 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
4066 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 4067 | return FALSE; |
252b5132 RH |
4068 | } |
4069 | } | |
4070 | ||
252b5132 RH |
4071 | if (elf_hash_table (info)->dynamic_sections_created) |
4072 | { | |
4073 | /* Add some entries to the .dynamic section. We fill in the | |
4074 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
4075 | must add the entries now so that we get the correct size for | |
4076 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4077 | dynamic linker and used by the debugger. */ | |
dc810e39 | 4078 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 4079 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 4080 | |
36af4a4e | 4081 | if (info->executable) |
252b5132 | 4082 | { |
dc810e39 | 4083 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 4084 | return FALSE; |
252b5132 RH |
4085 | } |
4086 | ||
252b5132 RH |
4087 | if (relplt) |
4088 | { | |
c0647bfc JT |
4089 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
4090 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
dc810e39 AM |
4091 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
4092 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 4093 | return FALSE; |
252b5132 RH |
4094 | } |
4095 | ||
dc810e39 AM |
4096 | if (!add_dynamic_entry (DT_RELA, 0) |
4097 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4098 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 4099 | return FALSE; |
252b5132 | 4100 | |
fcfbdf31 | 4101 | if (info->flags & DF_TEXTREL) |
252b5132 | 4102 | { |
dc810e39 | 4103 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 4104 | return FALSE; |
252b5132 RH |
4105 | } |
4106 | } | |
dc810e39 | 4107 | #undef add_dynamic_entry |
252b5132 | 4108 | |
b34976b6 | 4109 | return TRUE; |
252b5132 RH |
4110 | } |
4111 | ||
1bbc9cec RH |
4112 | /* Emit a dynamic relocation for (DYNINDX, RTYPE, ADDEND) at (SEC, OFFSET) |
4113 | into the next available slot in SREL. */ | |
4114 | ||
4115 | static void | |
4116 | elf64_alpha_emit_dynrel (abfd, info, sec, srel, offset, dynindx, rtype, addend) | |
4117 | bfd *abfd; | |
4118 | struct bfd_link_info *info; | |
4119 | asection *sec, *srel; | |
4120 | bfd_vma offset, addend; | |
4121 | long dynindx, rtype; | |
4122 | { | |
4123 | Elf_Internal_Rela outrel; | |
4124 | bfd_byte *loc; | |
4125 | ||
4126 | BFD_ASSERT (srel != NULL); | |
4127 | ||
4128 | outrel.r_info = ELF64_R_INFO (dynindx, rtype); | |
4129 | outrel.r_addend = addend; | |
4130 | ||
4131 | offset = _bfd_elf_section_offset (abfd, info, sec, offset); | |
4132 | if ((offset | 1) != (bfd_vma) -1) | |
4133 | outrel.r_offset = sec->output_section->vma + sec->output_offset + offset; | |
4134 | else | |
4135 | memset (&outrel, 0, sizeof (outrel)); | |
4136 | ||
4137 | loc = srel->contents; | |
4138 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
4139 | bfd_elf64_swap_reloca_out (abfd, &outrel, loc); | |
eea6121a | 4140 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count <= srel->size); |
1bbc9cec RH |
4141 | } |
4142 | ||
4a67a098 RH |
4143 | /* Relocate an Alpha ELF section for a relocatable link. |
4144 | ||
4145 | We don't have to change anything unless the reloc is against a section | |
4146 | symbol, in which case we have to adjust according to where the section | |
4147 | symbol winds up in the output section. */ | |
4148 | ||
b34976b6 | 4149 | static bfd_boolean |
4a67a098 RH |
4150 | elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, input_section, |
4151 | contents, relocs, local_syms, local_sections) | |
4152 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
4153 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
4154 | bfd *input_bfd; | |
4155 | asection *input_section; | |
4156 | bfd_byte *contents ATTRIBUTE_UNUSED; | |
4157 | Elf_Internal_Rela *relocs; | |
4158 | Elf_Internal_Sym *local_syms; | |
4159 | asection **local_sections; | |
4160 | { | |
4161 | unsigned long symtab_hdr_sh_info; | |
4162 | Elf_Internal_Rela *rel; | |
4163 | Elf_Internal_Rela *relend; | |
b34976b6 | 4164 | bfd_boolean ret_val = TRUE; |
4a67a098 RH |
4165 | |
4166 | symtab_hdr_sh_info = elf_tdata (input_bfd)->symtab_hdr.sh_info; | |
4167 | ||
4168 | relend = relocs + input_section->reloc_count; | |
4169 | for (rel = relocs; rel < relend; rel++) | |
4170 | { | |
4171 | unsigned long r_symndx; | |
4172 | Elf_Internal_Sym *sym; | |
4173 | asection *sec; | |
4174 | unsigned long r_type; | |
4175 | ||
4176 | r_type = ELF64_R_TYPE(rel->r_info); | |
4177 | if (r_type >= R_ALPHA_max) | |
4178 | { | |
4179 | (*_bfd_error_handler) | |
d003868e AM |
4180 | (_("%B: unknown relocation type %d"), |
4181 | input_bfd, (int) r_type); | |
4a67a098 | 4182 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4183 | ret_val = FALSE; |
4a67a098 RH |
4184 | continue; |
4185 | } | |
4186 | ||
4187 | r_symndx = ELF64_R_SYM(rel->r_info); | |
4188 | ||
4189 | /* The symbol associated with GPDISP and LITUSE is | |
4190 | immaterial. Only the addend is significant. */ | |
4191 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
4192 | continue; | |
4193 | ||
4194 | if (r_symndx < symtab_hdr_sh_info) | |
4195 | { | |
4196 | sym = local_syms + r_symndx; | |
4197 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
4198 | { | |
4199 | sec = local_sections[r_symndx]; | |
4200 | rel->r_addend += sec->output_offset + sym->st_value; | |
4201 | } | |
4202 | } | |
4203 | } | |
4204 | ||
4205 | return ret_val; | |
4206 | } | |
4207 | ||
252b5132 RH |
4208 | /* Relocate an Alpha ELF section. */ |
4209 | ||
b34976b6 | 4210 | static bfd_boolean |
252b5132 RH |
4211 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, |
4212 | contents, relocs, local_syms, local_sections) | |
4213 | bfd *output_bfd; | |
4214 | struct bfd_link_info *info; | |
4215 | bfd *input_bfd; | |
4216 | asection *input_section; | |
4217 | bfd_byte *contents; | |
4218 | Elf_Internal_Rela *relocs; | |
4219 | Elf_Internal_Sym *local_syms; | |
4220 | asection **local_sections; | |
4221 | { | |
4a67a098 | 4222 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
4223 | Elf_Internal_Rela *rel; |
4224 | Elf_Internal_Rela *relend; | |
4a67a098 RH |
4225 | asection *sgot, *srel, *srelgot; |
4226 | bfd *dynobj, *gotobj; | |
4227 | bfd_vma gp, tp_base, dtp_base; | |
4228 | struct alpha_elf_got_entry **local_got_entries; | |
b34976b6 | 4229 | bfd_boolean ret_val; |
4a67a098 | 4230 | const char *section_name; |
252b5132 | 4231 | |
4a67a098 | 4232 | /* Handle relocatable links with a smaller loop. */ |
1049f94e | 4233 | if (info->relocatable) |
4a67a098 RH |
4234 | return elf64_alpha_relocate_section_r (output_bfd, info, input_bfd, |
4235 | input_section, contents, relocs, | |
4236 | local_syms, local_sections); | |
4237 | ||
4238 | /* This is a final link. */ | |
4239 | ||
b34976b6 | 4240 | ret_val = TRUE; |
252b5132 | 4241 | |
4a67a098 | 4242 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3765b1be | 4243 | |
4a67a098 RH |
4244 | dynobj = elf_hash_table (info)->dynobj; |
4245 | if (dynobj) | |
4246 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4247 | else | |
4248 | srelgot = NULL; | |
4249 | ||
4250 | section_name = (bfd_elf_string_from_elf_section | |
4251 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4252 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4253 | BFD_ASSERT(section_name != NULL); | |
4254 | srel = bfd_get_section_by_name (dynobj, section_name); | |
3765b1be | 4255 | |
4a67a098 RH |
4256 | /* Find the gp value for this input bfd. */ |
4257 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4258 | if (gotobj) | |
4259 | { | |
4260 | sgot = alpha_elf_tdata (gotobj)->got; | |
4261 | gp = _bfd_get_gp_value (gotobj); | |
4262 | if (gp == 0) | |
252b5132 | 4263 | { |
4a67a098 RH |
4264 | gp = (sgot->output_section->vma |
4265 | + sgot->output_offset | |
4266 | + 0x8000); | |
4267 | _bfd_set_gp_value (gotobj, gp); | |
4268 | } | |
4269 | } | |
4270 | else | |
4271 | { | |
4272 | sgot = NULL; | |
4273 | gp = 0; | |
4274 | } | |
3765b1be | 4275 | |
4a67a098 RH |
4276 | local_got_entries = alpha_elf_tdata(input_bfd)->local_got_entries; |
4277 | ||
e1918d23 | 4278 | if (elf_hash_table (info)->tls_sec != NULL) |
4a67a098 | 4279 | { |
e1918d23 AM |
4280 | dtp_base = alpha_get_dtprel_base (info); |
4281 | tp_base = alpha_get_tprel_base (info); | |
252b5132 | 4282 | } |
4a67a098 RH |
4283 | else |
4284 | dtp_base = tp_base = 0; | |
252b5132 | 4285 | |
252b5132 | 4286 | relend = relocs + input_section->reloc_count; |
4a67a098 | 4287 | for (rel = relocs; rel < relend; rel++) |
252b5132 | 4288 | { |
4a67a098 | 4289 | struct alpha_elf_link_hash_entry *h = NULL; |
3765b1be RH |
4290 | struct alpha_elf_got_entry *gotent; |
4291 | bfd_reloc_status_type r; | |
252b5132 RH |
4292 | reloc_howto_type *howto; |
4293 | unsigned long r_symndx; | |
4a67a098 RH |
4294 | Elf_Internal_Sym *sym = NULL; |
4295 | asection *sec = NULL; | |
3765b1be | 4296 | bfd_vma value; |
dc810e39 | 4297 | bfd_vma addend; |
b34976b6 AM |
4298 | bfd_boolean dynamic_symbol_p; |
4299 | bfd_boolean undef_weak_ref = FALSE; | |
3765b1be | 4300 | unsigned long r_type; |
252b5132 RH |
4301 | |
4302 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4303 | if (r_type >= R_ALPHA_max) |
252b5132 | 4304 | { |
3765b1be | 4305 | (*_bfd_error_handler) |
d003868e AM |
4306 | (_("%B: unknown relocation type %d"), |
4307 | input_bfd, (int) r_type); | |
252b5132 | 4308 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4309 | ret_val = FALSE; |
3765b1be | 4310 | continue; |
252b5132 | 4311 | } |
252b5132 | 4312 | |
3765b1be | 4313 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4314 | r_symndx = ELF64_R_SYM(rel->r_info); |
4315 | ||
cc03ec80 RH |
4316 | /* The symbol for a TLSLDM reloc is ignored. Collapse the |
4317 | reloc to the 0 symbol so that they all match. */ | |
4318 | if (r_type == R_ALPHA_TLSLDM) | |
4319 | r_symndx = 0; | |
4320 | ||
252b5132 RH |
4321 | if (r_symndx < symtab_hdr->sh_info) |
4322 | { | |
8517fae7 | 4323 | asection *msec; |
252b5132 RH |
4324 | sym = local_syms + r_symndx; |
4325 | sec = local_sections[r_symndx]; | |
8517fae7 AM |
4326 | msec = sec; |
4327 | value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel); | |
3765b1be | 4328 | |
cc03ec80 RH |
4329 | /* If this is a tp-relative relocation against sym 0, |
4330 | this is hackery from relax_section. Force the value to | |
4331 | be the tls base. */ | |
4332 | if (r_symndx == 0 | |
4333 | && (r_type == R_ALPHA_TLSLDM | |
4334 | || r_type == R_ALPHA_GOTTPREL | |
4335 | || r_type == R_ALPHA_TPREL64 | |
4336 | || r_type == R_ALPHA_TPRELHI | |
4337 | || r_type == R_ALPHA_TPRELLO | |
4338 | || r_type == R_ALPHA_TPREL16)) | |
4339 | value = tp_base; | |
4340 | ||
4a67a098 RH |
4341 | if (local_got_entries) |
4342 | gotent = local_got_entries[r_symndx]; | |
4343 | else | |
4344 | gotent = NULL; | |
3765b1be RH |
4345 | |
4346 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4347 | unless it has been done already. */ | |
4348 | if ((sec->flags & SEC_MERGE) | |
048d873d | 4349 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION |
68bfbfcc | 4350 | && sec->sec_info_type == ELF_INFO_TYPE_MERGE |
048d873d RH |
4351 | && gotent |
4352 | && !gotent->reloc_xlated) | |
3765b1be RH |
4353 | { |
4354 | struct alpha_elf_got_entry *ent; | |
3765b1be RH |
4355 | |
4356 | for (ent = gotent; ent; ent = ent->next) | |
4357 | { | |
4358 | ent->reloc_xlated = 1; | |
4359 | if (ent->use_count == 0) | |
4360 | continue; | |
4361 | msec = sec; | |
4362 | ent->addend = | |
4363 | _bfd_merged_section_offset (output_bfd, &msec, | |
4364 | elf_section_data (sec)-> | |
4365 | sec_info, | |
753731ee | 4366 | sym->st_value + ent->addend); |
3765b1be RH |
4367 | ent->addend -= sym->st_value; |
4368 | ent->addend += msec->output_section->vma | |
4369 | + msec->output_offset | |
4370 | - sec->output_section->vma | |
4371 | - sec->output_offset; | |
4372 | } | |
4373 | } | |
4374 | ||
b34976b6 | 4375 | dynamic_symbol_p = FALSE; |
252b5132 RH |
4376 | } |
4377 | else | |
4378 | { | |
560e09e9 NC |
4379 | bfd_boolean warned; |
4380 | bfd_boolean unresolved_reloc; | |
4381 | struct elf_link_hash_entry *hh; | |
b2a8e766 AM |
4382 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
4383 | ||
4384 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4385 | r_symndx, symtab_hdr, sym_hashes, | |
4386 | hh, sec, value, | |
4387 | unresolved_reloc, warned); | |
560e09e9 NC |
4388 | |
4389 | if (warned) | |
4390 | continue; | |
252b5132 | 4391 | |
560e09e9 NC |
4392 | if (value == 0 |
4393 | && ! unresolved_reloc | |
4394 | && hh->root.type == bfd_link_hash_undefweak) | |
b34976b6 | 4395 | undef_weak_ref = TRUE; |
3765b1be | 4396 | |
560e09e9 | 4397 | h = (struct alpha_elf_link_hash_entry *) hh; |
3765b1be RH |
4398 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); |
4399 | gotent = h->got_entries; | |
252b5132 | 4400 | } |
3765b1be | 4401 | |
252b5132 | 4402 | addend = rel->r_addend; |
3765b1be RH |
4403 | value += addend; |
4404 | ||
4405 | /* Search for the proper got entry. */ | |
4406 | for (; gotent ; gotent = gotent->next) | |
4407 | if (gotent->gotobj == gotobj | |
4408 | && gotent->reloc_type == r_type | |
4409 | && gotent->addend == addend) | |
4410 | break; | |
252b5132 RH |
4411 | |
4412 | switch (r_type) | |
4413 | { | |
4414 | case R_ALPHA_GPDISP: | |
4415 | { | |
4416 | bfd_byte *p_ldah, *p_lda; | |
4417 | ||
4418 | BFD_ASSERT(gp != 0); | |
4419 | ||
3765b1be RH |
4420 | value = (input_section->output_section->vma |
4421 | + input_section->output_offset | |
4422 | + rel->r_offset); | |
252b5132 | 4423 | |
3765b1be | 4424 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4425 | p_lda = p_ldah + rel->r_addend; |
4426 | ||
3765b1be | 4427 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4428 | p_ldah, p_lda); |
4429 | } | |
4430 | break; | |
4431 | ||
252b5132 | 4432 | case R_ALPHA_LITERAL: |
3765b1be RH |
4433 | BFD_ASSERT(sgot != NULL); |
4434 | BFD_ASSERT(gp != 0); | |
4435 | BFD_ASSERT(gotent != NULL); | |
4436 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4437 | |
3765b1be RH |
4438 | if (!gotent->reloc_done) |
4439 | { | |
4440 | gotent->reloc_done = 1; | |
252b5132 | 4441 | |
3765b1be RH |
4442 | bfd_put_64 (output_bfd, value, |
4443 | sgot->contents + gotent->got_offset); | |
252b5132 | 4444 | |
3765b1be RH |
4445 | /* If the symbol has been forced local, output a |
4446 | RELATIVE reloc, otherwise it will be handled in | |
4447 | finish_dynamic_symbol. */ | |
4448 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4449 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4450 | gotent->got_offset, 0, | |
4451 | R_ALPHA_RELATIVE, value); | |
3765b1be | 4452 | } |
252b5132 | 4453 | |
3765b1be RH |
4454 | value = (sgot->output_section->vma |
4455 | + sgot->output_offset | |
4456 | + gotent->got_offset); | |
4457 | value -= gp; | |
252b5132 RH |
4458 | goto default_reloc; |
4459 | ||
4460 | case R_ALPHA_GPREL32: | |
ec1659c8 RH |
4461 | /* If the target section was a removed linkonce section, |
4462 | r_symndx will be zero. In this case, assume that the | |
4463 | switch will not be used, so don't fill it in. If we | |
4464 | do nothing here, we'll get relocation truncated messages, | |
4465 | due to the placement of the application above 4GB. */ | |
4466 | if (r_symndx == 0) | |
4467 | { | |
4468 | r = bfd_reloc_ok; | |
4469 | break; | |
4470 | } | |
4471 | /* FALLTHRU */ | |
4472 | ||
4473 | case R_ALPHA_GPREL16: | |
252b5132 | 4474 | case R_ALPHA_GPRELLOW: |
3765b1be | 4475 | if (dynamic_symbol_p) |
f16fbd61 RH |
4476 | { |
4477 | (*_bfd_error_handler) | |
d003868e AM |
4478 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4479 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4480 | ret_val = FALSE; |
f16fbd61 | 4481 | } |
252b5132 | 4482 | BFD_ASSERT(gp != 0); |
3765b1be | 4483 | value -= gp; |
252b5132 RH |
4484 | goto default_reloc; |
4485 | ||
4486 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4487 | if (dynamic_symbol_p) |
f16fbd61 RH |
4488 | { |
4489 | (*_bfd_error_handler) | |
d003868e AM |
4490 | (_("%B: gp-relative relocation against dynamic symbol %s"), |
4491 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4492 | ret_val = FALSE; |
f16fbd61 | 4493 | } |
252b5132 | 4494 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4495 | value -= gp; |
4496 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4497 | goto default_reloc; |
4498 | ||
252b5132 | 4499 | case R_ALPHA_HINT: |
f94952df RH |
4500 | /* A call to a dynamic symbol is definitely out of range of |
4501 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4502 | if (dynamic_symbol_p) |
f94952df RH |
4503 | { |
4504 | r = bfd_reloc_ok; | |
4505 | break; | |
4506 | } | |
3765b1be RH |
4507 | /* The regular PC-relative stuff measures from the start of |
4508 | the instruction rather than the end. */ | |
4509 | value -= 4; | |
4510 | goto default_reloc; | |
f94952df RH |
4511 | |
4512 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4513 | if (dynamic_symbol_p) |
4514 | { | |
4515 | (*_bfd_error_handler) | |
d003868e AM |
4516 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4517 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4518 | ret_val = FALSE; |
3765b1be | 4519 | } |
252b5132 RH |
4520 | /* The regular PC-relative stuff measures from the start of |
4521 | the instruction rather than the end. */ | |
3765b1be | 4522 | value -= 4; |
252b5132 RH |
4523 | goto default_reloc; |
4524 | ||
7793f4d0 RH |
4525 | case R_ALPHA_BRSGP: |
4526 | { | |
4527 | int other; | |
4528 | const char *name; | |
4529 | ||
4530 | /* The regular PC-relative stuff measures from the start of | |
4531 | the instruction rather than the end. */ | |
3765b1be | 4532 | value -= 4; |
7793f4d0 | 4533 | |
ccf00ab6 RH |
4534 | /* The source and destination gp must be the same. Note that |
4535 | the source will always have an assigned gp, since we forced | |
4536 | one in check_relocs, but that the destination may not, as | |
cedb70c5 | 4537 | it might not have had any relocations at all. Also take |
ccf00ab6 RH |
4538 | care not to crash if H is an undefined symbol. */ |
4539 | if (h != NULL && sec != NULL | |
4540 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4541 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4542 | { | |
7793f4d0 | 4543 | (*_bfd_error_handler) |
d003868e AM |
4544 | (_("%B: change in gp: BRSGP %s"), |
4545 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4546 | ret_val = FALSE; |
7793f4d0 RH |
4547 | } |
4548 | ||
4549 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4550 | if (h != NULL) | |
4551 | other = h->root.other; | |
4552 | else | |
4553 | other = sym->st_other; | |
4554 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4555 | { | |
4556 | case STO_ALPHA_NOPV: | |
4557 | break; | |
4558 | case STO_ALPHA_STD_GPLOAD: | |
64e04ecd | 4559 | value += 8; |
7793f4d0 RH |
4560 | break; |
4561 | default: | |
4562 | if (h != NULL) | |
4563 | name = h->root.root.root.string; | |
4564 | else | |
4565 | { | |
4566 | name = (bfd_elf_string_from_elf_section | |
4567 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4568 | if (name == NULL) | |
4569 | name = _("<unknown>"); | |
4570 | else if (name[0] == 0) | |
4571 | name = bfd_section_name (input_bfd, sec); | |
4572 | } | |
4573 | (*_bfd_error_handler) | |
d003868e AM |
4574 | (_("%B: !samegp reloc against symbol without .prologue: %s"), |
4575 | input_bfd, name); | |
b34976b6 | 4576 | ret_val = FALSE; |
7793f4d0 RH |
4577 | break; |
4578 | } | |
4579 | ||
4580 | goto default_reloc; | |
4581 | } | |
4582 | ||
252b5132 RH |
4583 | case R_ALPHA_REFLONG: |
4584 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4585 | case R_ALPHA_DTPREL64: |
4586 | case R_ALPHA_TPREL64: | |
252b5132 | 4587 | { |
1bbc9cec RH |
4588 | long dynindx, dyntype = r_type; |
4589 | bfd_vma dynaddend; | |
252b5132 RH |
4590 | |
4591 | /* Careful here to remember RELATIVE relocations for global | |
4592 | variables for symbolic shared objects. */ | |
4593 | ||
3765b1be | 4594 | if (dynamic_symbol_p) |
252b5132 RH |
4595 | { |
4596 | BFD_ASSERT(h->root.dynindx != -1); | |
1bbc9cec RH |
4597 | dynindx = h->root.dynindx; |
4598 | dynaddend = addend; | |
3765b1be RH |
4599 | addend = 0, value = 0; |
4600 | } | |
4601 | else if (r_type == R_ALPHA_DTPREL64) | |
4602 | { | |
e1918d23 | 4603 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4604 | value -= dtp_base; |
4605 | goto default_reloc; | |
4606 | } | |
4607 | else if (r_type == R_ALPHA_TPREL64) | |
4608 | { | |
e1918d23 | 4609 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4610 | if (!info->shared) |
4611 | { | |
4612 | value -= tp_base; | |
4613 | goto default_reloc; | |
4614 | } | |
4615 | dynindx = 0; | |
4616 | dynaddend = value - dtp_base; | |
252b5132 | 4617 | } |
ec338859 AM |
4618 | else if (info->shared |
4619 | && r_symndx != 0 | |
4620 | && (input_section->flags & SEC_ALLOC)) | |
252b5132 | 4621 | { |
3765b1be RH |
4622 | if (r_type == R_ALPHA_REFLONG) |
4623 | { | |
4624 | (*_bfd_error_handler) | |
d003868e AM |
4625 | (_("%B: unhandled dynamic relocation against %s"), |
4626 | input_bfd, | |
3765b1be | 4627 | h->root.root.root.string); |
b34976b6 | 4628 | ret_val = FALSE; |
3765b1be | 4629 | } |
1bbc9cec RH |
4630 | dynindx = 0; |
4631 | dyntype = R_ALPHA_RELATIVE; | |
4632 | dynaddend = value; | |
252b5132 RH |
4633 | } |
4634 | else | |
4635 | goto default_reloc; | |
4636 | ||
1bbc9cec RH |
4637 | elf64_alpha_emit_dynrel (output_bfd, info, input_section, |
4638 | srel, rel->r_offset, dynindx, | |
4639 | dyntype, dynaddend); | |
252b5132 RH |
4640 | } |
4641 | goto default_reloc; | |
4642 | ||
3765b1be | 4643 | case R_ALPHA_SREL16: |
84de6048 RH |
4644 | case R_ALPHA_SREL32: |
4645 | case R_ALPHA_SREL64: | |
3765b1be RH |
4646 | if (dynamic_symbol_p) |
4647 | { | |
4648 | (*_bfd_error_handler) | |
d003868e AM |
4649 | (_("%B: pc-relative relocation against dynamic symbol %s"), |
4650 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4651 | ret_val = FALSE; |
3765b1be RH |
4652 | } |
4653 | ||
84de6048 RH |
4654 | /* ??? .eh_frame references to discarded sections will be smashed |
4655 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4656 | NULL to be encoded as 0 in any format, so this works here. */ | |
4657 | if (r_symndx == 0) | |
4658 | howto = (elf64_alpha_howto_table | |
4659 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4660 | goto default_reloc; | |
4661 | ||
3765b1be RH |
4662 | case R_ALPHA_TLSLDM: |
4663 | /* Ignore the symbol for the relocation. The result is always | |
4664 | the current module. */ | |
4665 | dynamic_symbol_p = 0; | |
4666 | /* FALLTHRU */ | |
4667 | ||
4668 | case R_ALPHA_TLSGD: | |
4669 | if (!gotent->reloc_done) | |
4670 | { | |
4671 | gotent->reloc_done = 1; | |
4672 | ||
4673 | /* Note that the module index for the main program is 1. */ | |
4674 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4675 | sgot->contents + gotent->got_offset); | |
4676 | ||
4677 | /* If the symbol has been forced local, output a | |
4678 | DTPMOD64 reloc, otherwise it will be handled in | |
4679 | finish_dynamic_symbol. */ | |
4680 | if (info->shared && !dynamic_symbol_p) | |
1bbc9cec RH |
4681 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, |
4682 | gotent->got_offset, 0, | |
4683 | R_ALPHA_DTPMOD64, 0); | |
3765b1be RH |
4684 | |
4685 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4686 | value = 0; | |
4687 | else | |
4688 | { | |
e1918d23 | 4689 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be RH |
4690 | value -= dtp_base; |
4691 | } | |
4692 | bfd_put_64 (output_bfd, value, | |
4693 | sgot->contents + gotent->got_offset + 8); | |
4694 | } | |
4695 | ||
4696 | value = (sgot->output_section->vma | |
4697 | + sgot->output_offset | |
4698 | + gotent->got_offset); | |
4699 | value -= gp; | |
4700 | goto default_reloc; | |
4701 | ||
4702 | case R_ALPHA_DTPRELHI: | |
4703 | case R_ALPHA_DTPRELLO: | |
4704 | case R_ALPHA_DTPREL16: | |
4705 | if (dynamic_symbol_p) | |
4706 | { | |
4707 | (*_bfd_error_handler) | |
d003868e AM |
4708 | (_("%B: dtp-relative relocation against dynamic symbol %s"), |
4709 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4710 | ret_val = FALSE; |
3765b1be | 4711 | } |
e1918d23 | 4712 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4713 | value -= dtp_base; |
9e756d64 RH |
4714 | if (r_type == R_ALPHA_DTPRELHI) |
4715 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4716 | goto default_reloc; |
4717 | ||
4718 | case R_ALPHA_TPRELHI: | |
4719 | case R_ALPHA_TPRELLO: | |
4720 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4721 | if (info->shared) |
4722 | { | |
4723 | (*_bfd_error_handler) | |
d003868e AM |
4724 | (_("%B: TLS local exec code cannot be linked into shared objects"), |
4725 | input_bfd); | |
b34976b6 | 4726 | ret_val = FALSE; |
9e756d64 RH |
4727 | } |
4728 | else if (dynamic_symbol_p) | |
3765b1be RH |
4729 | { |
4730 | (*_bfd_error_handler) | |
d003868e AM |
4731 | (_("%B: tp-relative relocation against dynamic symbol %s"), |
4732 | input_bfd, h->root.root.root.string); | |
b34976b6 | 4733 | ret_val = FALSE; |
3765b1be | 4734 | } |
e1918d23 | 4735 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
3765b1be | 4736 | value -= tp_base; |
9e756d64 RH |
4737 | if (r_type == R_ALPHA_TPRELHI) |
4738 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4739 | goto default_reloc; |
4740 | ||
4741 | case R_ALPHA_GOTDTPREL: | |
4742 | case R_ALPHA_GOTTPREL: | |
4743 | BFD_ASSERT(sgot != NULL); | |
4744 | BFD_ASSERT(gp != 0); | |
4745 | BFD_ASSERT(gotent != NULL); | |
4746 | BFD_ASSERT(gotent->use_count >= 1); | |
4747 | ||
4748 | if (!gotent->reloc_done) | |
4749 | { | |
4750 | gotent->reloc_done = 1; | |
4751 | ||
4752 | if (dynamic_symbol_p) | |
4753 | value = 0; | |
4754 | else | |
4755 | { | |
e1918d23 | 4756 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); |
1bbc9cec RH |
4757 | if (r_type == R_ALPHA_GOTDTPREL) |
4758 | value -= dtp_base; | |
4759 | else if (!info->shared) | |
4760 | value -= tp_base; | |
4761 | else | |
4762 | { | |
4763 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srelgot, | |
4764 | gotent->got_offset, 0, | |
4765 | R_ALPHA_TPREL64, | |
4766 | value - dtp_base); | |
4767 | value = 0; | |
4768 | } | |
3765b1be RH |
4769 | } |
4770 | bfd_put_64 (output_bfd, value, | |
4771 | sgot->contents + gotent->got_offset); | |
4772 | } | |
4773 | ||
4774 | value = (sgot->output_section->vma | |
4775 | + sgot->output_offset | |
4776 | + gotent->got_offset); | |
4777 | value -= gp; | |
4778 | goto default_reloc; | |
4779 | ||
252b5132 RH |
4780 | default: |
4781 | default_reloc: | |
4782 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4783 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4784 | break; |
4785 | } | |
4786 | ||
4787 | switch (r) | |
4788 | { | |
4789 | case bfd_reloc_ok: | |
4790 | break; | |
4791 | ||
4792 | case bfd_reloc_overflow: | |
4793 | { | |
4794 | const char *name; | |
4795 | ||
ed4de5e2 JJ |
4796 | /* Don't warn if the overflow is due to pc relative reloc |
4797 | against discarded section. Section optimization code should | |
4798 | handle it. */ | |
4799 | ||
4800 | if (r_symndx < symtab_hdr->sh_info | |
4801 | && sec != NULL && howto->pc_relative | |
4802 | && elf_discarded_section (sec)) | |
4803 | break; | |
4804 | ||
252b5132 | 4805 | if (h != NULL) |
dfeffb9f | 4806 | name = NULL; |
252b5132 RH |
4807 | else |
4808 | { | |
4809 | name = (bfd_elf_string_from_elf_section | |
4810 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4811 | if (name == NULL) | |
b34976b6 | 4812 | return FALSE; |
252b5132 RH |
4813 | if (*name == '\0') |
4814 | name = bfd_section_name (input_bfd, sec); | |
4815 | } | |
4816 | if (! ((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4817 | (info, (h ? &h->root.root : NULL), name, howto->name, |
4818 | (bfd_vma) 0, input_bfd, input_section, | |
4819 | rel->r_offset))) | |
b34976b6 | 4820 | ret_val = FALSE; |
252b5132 RH |
4821 | } |
4822 | break; | |
4823 | ||
4824 | default: | |
4825 | case bfd_reloc_outofrange: | |
4826 | abort (); | |
4827 | } | |
4828 | } | |
4829 | ||
f16fbd61 | 4830 | return ret_val; |
252b5132 RH |
4831 | } |
4832 | ||
4833 | /* Finish up dynamic symbol handling. We set the contents of various | |
4834 | dynamic sections here. */ | |
4835 | ||
b34976b6 | 4836 | static bfd_boolean |
252b5132 RH |
4837 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) |
4838 | bfd *output_bfd; | |
4839 | struct bfd_link_info *info; | |
4840 | struct elf_link_hash_entry *h; | |
4841 | Elf_Internal_Sym *sym; | |
4842 | { | |
4843 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4844 | ||
4845 | if (h->plt.offset != MINUS_ONE) | |
4846 | { | |
4847 | /* Fill in the .plt entry for this symbol. */ | |
4848 | asection *splt, *sgot, *srel; | |
4849 | Elf_Internal_Rela outrel; | |
947216bf | 4850 | bfd_byte *loc; |
252b5132 RH |
4851 | bfd_vma got_addr, plt_addr; |
4852 | bfd_vma plt_index; | |
4853 | struct alpha_elf_got_entry *gotent; | |
4854 | ||
4855 | BFD_ASSERT (h->dynindx != -1); | |
4856 | ||
4857 | /* The first .got entry will be updated by the .plt with the | |
4858 | address of the target function. */ | |
4859 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
4860 | BFD_ASSERT (gotent && gotent->addend == 0); | |
4861 | ||
4862 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4863 | BFD_ASSERT (splt != NULL); | |
4864 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4865 | BFD_ASSERT (srel != NULL); | |
4866 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
4867 | BFD_ASSERT (sgot != NULL); | |
4868 | ||
4869 | got_addr = (sgot->output_section->vma | |
4870 | + sgot->output_offset | |
4871 | + gotent->got_offset); | |
4872 | plt_addr = (splt->output_section->vma | |
4873 | + splt->output_offset | |
4874 | + h->plt.offset); | |
4875 | ||
4876 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
4877 | ||
4878 | /* Fill in the entry in the procedure linkage table. */ | |
4879 | { | |
dc810e39 | 4880 | bfd_vma insn1, insn2, insn3; |
252b5132 RH |
4881 | |
4882 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); | |
4883 | insn2 = PLT_ENTRY_WORD2; | |
4884 | insn3 = PLT_ENTRY_WORD3; | |
4885 | ||
4886 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); | |
4887 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); | |
4888 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); | |
4889 | } | |
4890 | ||
4891 | /* Fill in the entry in the .rela.plt section. */ | |
4892 | outrel.r_offset = got_addr; | |
4893 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4894 | outrel.r_addend = 0; | |
4895 | ||
947216bf AM |
4896 | loc = srel->contents + plt_index * sizeof (Elf64_External_Rela); |
4897 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 | 4898 | |
f5385ebf | 4899 | if (!h->def_regular) |
252b5132 RH |
4900 | { |
4901 | /* Mark the symbol as undefined, rather than as defined in the | |
4902 | .plt section. Leave the value alone. */ | |
4903 | sym->st_shndx = SHN_UNDEF; | |
4904 | } | |
4905 | ||
4906 | /* Fill in the entries in the .got. */ | |
4907 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
4908 | ||
4909 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
4910 | if (gotent->next) | |
4911 | { | |
4912 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4913 | BFD_ASSERT (! info->shared || srel != NULL); | |
4914 | ||
4915 | gotent = gotent->next; | |
4916 | do | |
4917 | { | |
4918 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
4919 | BFD_ASSERT(sgot != NULL); | |
4920 | BFD_ASSERT(gotent->addend == 0); | |
4921 | ||
4922 | bfd_put_64 (output_bfd, plt_addr, | |
4923 | sgot->contents + gotent->got_offset); | |
4924 | ||
4925 | if (info->shared) | |
1bbc9cec RH |
4926 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4927 | gotent->got_offset, 0, | |
4928 | R_ALPHA_RELATIVE, plt_addr); | |
252b5132 RH |
4929 | |
4930 | gotent = gotent->next; | |
4931 | } | |
4932 | while (gotent != NULL); | |
4933 | } | |
4934 | } | |
4935 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4936 | { | |
4937 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4938 | asection *srel; | |
252b5132 RH |
4939 | struct alpha_elf_got_entry *gotent; |
4940 | ||
4941 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4942 | BFD_ASSERT (srel != NULL); | |
4943 | ||
252b5132 RH |
4944 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4945 | gotent != NULL; | |
4946 | gotent = gotent->next) | |
4947 | { | |
f44f99a5 | 4948 | asection *sgot; |
1bbc9cec | 4949 | long r_type; |
3765b1be | 4950 | |
f44f99a5 RH |
4951 | if (gotent->use_count == 0) |
4952 | continue; | |
4953 | ||
4954 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3765b1be RH |
4955 | |
4956 | r_type = gotent->reloc_type; | |
4957 | switch (r_type) | |
4958 | { | |
4959 | case R_ALPHA_LITERAL: | |
4960 | r_type = R_ALPHA_GLOB_DAT; | |
4961 | break; | |
4962 | case R_ALPHA_TLSGD: | |
4963 | r_type = R_ALPHA_DTPMOD64; | |
4964 | break; | |
4965 | case R_ALPHA_GOTDTPREL: | |
4966 | r_type = R_ALPHA_DTPREL64; | |
4967 | break; | |
4968 | case R_ALPHA_GOTTPREL: | |
4969 | r_type = R_ALPHA_TPREL64; | |
4970 | break; | |
4971 | case R_ALPHA_TLSLDM: | |
4972 | default: | |
4973 | abort (); | |
4974 | } | |
4975 | ||
1bbc9cec RH |
4976 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4977 | gotent->got_offset, h->dynindx, | |
4978 | r_type, gotent->addend); | |
3765b1be RH |
4979 | |
4980 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
1bbc9cec RH |
4981 | elf64_alpha_emit_dynrel (output_bfd, info, sgot, srel, |
4982 | gotent->got_offset + 8, h->dynindx, | |
4983 | R_ALPHA_DTPREL64, gotent->addend); | |
252b5132 RH |
4984 | } |
4985 | } | |
4986 | ||
4987 | /* Mark some specially defined symbols as absolute. */ | |
4988 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4989 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
4990 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
4991 | sym->st_shndx = SHN_ABS; | |
4992 | ||
b34976b6 | 4993 | return TRUE; |
252b5132 RH |
4994 | } |
4995 | ||
4996 | /* Finish up the dynamic sections. */ | |
4997 | ||
b34976b6 | 4998 | static bfd_boolean |
252b5132 RH |
4999 | elf64_alpha_finish_dynamic_sections (output_bfd, info) |
5000 | bfd *output_bfd; | |
5001 | struct bfd_link_info *info; | |
5002 | { | |
5003 | bfd *dynobj; | |
5004 | asection *sdyn; | |
5005 | ||
5006 | dynobj = elf_hash_table (info)->dynobj; | |
5007 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
5008 | ||
5009 | if (elf_hash_table (info)->dynamic_sections_created) | |
5010 | { | |
5011 | asection *splt; | |
5012 | Elf64_External_Dyn *dyncon, *dynconend; | |
5013 | ||
5014 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
5015 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
5016 | ||
5017 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 5018 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
5019 | for (; dyncon < dynconend; dyncon++) |
5020 | { | |
5021 | Elf_Internal_Dyn dyn; | |
5022 | const char *name; | |
5023 | asection *s; | |
5024 | ||
5025 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
5026 | ||
5027 | switch (dyn.d_tag) | |
5028 | { | |
5029 | case DT_PLTGOT: | |
5030 | name = ".plt"; | |
5031 | goto get_vma; | |
5032 | case DT_PLTRELSZ: | |
5033 | name = ".rela.plt"; | |
5034 | goto get_size; | |
5035 | case DT_JMPREL: | |
5036 | name = ".rela.plt"; | |
5037 | goto get_vma; | |
5038 | ||
5039 | case DT_RELASZ: | |
5040 | /* My interpretation of the TIS v1.1 ELF document indicates | |
5041 | that RELASZ should not include JMPREL. This is not what | |
5042 | the rest of the BFD does. It is, however, what the | |
5043 | glibc ld.so wants. Do this fixup here until we found | |
5044 | out who is right. */ | |
5045 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
5046 | if (s) | |
eea6121a | 5047 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
5048 | break; |
5049 | ||
5050 | get_vma: | |
5051 | s = bfd_get_section_by_name (output_bfd, name); | |
5052 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
5053 | break; | |
5054 | ||
5055 | get_size: | |
5056 | s = bfd_get_section_by_name (output_bfd, name); | |
eea6121a | 5057 | dyn.d_un.d_val = s->size; |
252b5132 RH |
5058 | break; |
5059 | } | |
5060 | ||
5061 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5062 | } | |
5063 | ||
ae9a127f | 5064 | /* Initialize the PLT0 entry. */ |
eea6121a | 5065 | if (splt->size > 0) |
252b5132 RH |
5066 | { |
5067 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
5068 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
5069 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
5070 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
5071 | ||
5072 | /* The next two words will be filled in by ld.so */ | |
dc810e39 AM |
5073 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16); |
5074 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24); | |
252b5132 | 5075 | |
eecdbe52 | 5076 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 0; |
252b5132 RH |
5077 | } |
5078 | } | |
5079 | ||
b34976b6 | 5080 | return TRUE; |
252b5132 RH |
5081 | } |
5082 | ||
96e2734b RH |
5083 | /* We need to use a special link routine to handle the .mdebug section. |
5084 | We need to merge all instances of these sections together, not write | |
5085 | them all out sequentially. */ | |
252b5132 | 5086 | |
b34976b6 | 5087 | static bfd_boolean |
252b5132 RH |
5088 | elf64_alpha_final_link (abfd, info) |
5089 | bfd *abfd; | |
5090 | struct bfd_link_info *info; | |
5091 | { | |
5092 | asection *o; | |
5093 | struct bfd_link_order *p; | |
96e2734b | 5094 | asection *mdebug_sec; |
252b5132 RH |
5095 | struct ecoff_debug_info debug; |
5096 | const struct ecoff_debug_swap *swap | |
5097 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
5098 | HDRR *symhdr = &debug.symbolic_header; | |
5099 | PTR mdebug_handle = NULL; | |
5100 | ||
96e2734b | 5101 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 5102 | mdebug_sec = NULL; |
252b5132 RH |
5103 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
5104 | { | |
252b5132 RH |
5105 | if (strcmp (o->name, ".mdebug") == 0) |
5106 | { | |
5107 | struct extsym_info einfo; | |
5108 | ||
5109 | /* We have found the .mdebug section in the output file. | |
5110 | Look through all the link_orders comprising it and merge | |
5111 | the information together. */ | |
5112 | symhdr->magic = swap->sym_magic; | |
5113 | /* FIXME: What should the version stamp be? */ | |
5114 | symhdr->vstamp = 0; | |
5115 | symhdr->ilineMax = 0; | |
5116 | symhdr->cbLine = 0; | |
5117 | symhdr->idnMax = 0; | |
5118 | symhdr->ipdMax = 0; | |
5119 | symhdr->isymMax = 0; | |
5120 | symhdr->ioptMax = 0; | |
5121 | symhdr->iauxMax = 0; | |
5122 | symhdr->issMax = 0; | |
5123 | symhdr->issExtMax = 0; | |
5124 | symhdr->ifdMax = 0; | |
5125 | symhdr->crfd = 0; | |
5126 | symhdr->iextMax = 0; | |
5127 | ||
5128 | /* We accumulate the debugging information itself in the | |
5129 | debug_info structure. */ | |
5130 | debug.line = NULL; | |
5131 | debug.external_dnr = NULL; | |
5132 | debug.external_pdr = NULL; | |
5133 | debug.external_sym = NULL; | |
5134 | debug.external_opt = NULL; | |
5135 | debug.external_aux = NULL; | |
5136 | debug.ss = NULL; | |
5137 | debug.ssext = debug.ssext_end = NULL; | |
5138 | debug.external_fdr = NULL; | |
5139 | debug.external_rfd = NULL; | |
5140 | debug.external_ext = debug.external_ext_end = NULL; | |
5141 | ||
5142 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
5143 | if (mdebug_handle == (PTR) NULL) | |
b34976b6 | 5144 | return FALSE; |
252b5132 RH |
5145 | |
5146 | if (1) | |
5147 | { | |
5148 | asection *s; | |
5149 | EXTR esym; | |
52b9d213 | 5150 | bfd_vma last = 0; |
252b5132 RH |
5151 | unsigned int i; |
5152 | static const char * const name[] = | |
5153 | { | |
5154 | ".text", ".init", ".fini", ".data", | |
5155 | ".rodata", ".sdata", ".sbss", ".bss" | |
5156 | }; | |
5157 | static const int sc[] = { scText, scInit, scFini, scData, | |
5158 | scRData, scSData, scSBss, scBss }; | |
5159 | ||
5160 | esym.jmptbl = 0; | |
5161 | esym.cobol_main = 0; | |
5162 | esym.weakext = 0; | |
5163 | esym.reserved = 0; | |
5164 | esym.ifd = ifdNil; | |
5165 | esym.asym.iss = issNil; | |
5166 | esym.asym.st = stLocal; | |
5167 | esym.asym.reserved = 0; | |
5168 | esym.asym.index = indexNil; | |
5169 | for (i = 0; i < 8; i++) | |
5170 | { | |
5171 | esym.asym.sc = sc[i]; | |
5172 | s = bfd_get_section_by_name (abfd, name[i]); | |
5173 | if (s != NULL) | |
5174 | { | |
5175 | esym.asym.value = s->vma; | |
eea6121a | 5176 | last = s->vma + s->size; |
252b5132 RH |
5177 | } |
5178 | else | |
5179 | esym.asym.value = last; | |
5180 | ||
5181 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5182 | name[i], &esym)) | |
b34976b6 | 5183 | return FALSE; |
252b5132 RH |
5184 | } |
5185 | } | |
5186 | ||
8423293d | 5187 | for (p = o->map_head.link_order; |
252b5132 RH |
5188 | p != (struct bfd_link_order *) NULL; |
5189 | p = p->next) | |
5190 | { | |
5191 | asection *input_section; | |
5192 | bfd *input_bfd; | |
5193 | const struct ecoff_debug_swap *input_swap; | |
5194 | struct ecoff_debug_info input_debug; | |
5195 | char *eraw_src; | |
5196 | char *eraw_end; | |
5197 | ||
5198 | if (p->type != bfd_indirect_link_order) | |
5199 | { | |
fd96f80f | 5200 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5201 | continue; |
5202 | abort (); | |
5203 | } | |
5204 | ||
5205 | input_section = p->u.indirect.section; | |
5206 | input_bfd = input_section->owner; | |
5207 | ||
5208 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
5209 | || (get_elf_backend_data (input_bfd) | |
5210 | ->elf_backend_ecoff_debug_swap) == NULL) | |
5211 | { | |
5212 | /* I don't know what a non ALPHA ELF bfd would be | |
5213 | doing with a .mdebug section, but I don't really | |
5214 | want to deal with it. */ | |
5215 | continue; | |
5216 | } | |
5217 | ||
5218 | input_swap = (get_elf_backend_data (input_bfd) | |
5219 | ->elf_backend_ecoff_debug_swap); | |
5220 | ||
eea6121a | 5221 | BFD_ASSERT (p->size == input_section->size); |
252b5132 RH |
5222 | |
5223 | /* The ECOFF linking code expects that we have already | |
5224 | read in the debugging information and set up an | |
5225 | ecoff_debug_info structure, so we do that now. */ | |
5226 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5227 | &input_debug)) | |
b34976b6 | 5228 | return FALSE; |
252b5132 RH |
5229 | |
5230 | if (! (bfd_ecoff_debug_accumulate | |
5231 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5232 | &input_debug, input_swap, info))) | |
b34976b6 | 5233 | return FALSE; |
252b5132 RH |
5234 | |
5235 | /* Loop through the external symbols. For each one with | |
5236 | interesting information, try to find the symbol in | |
5237 | the linker global hash table and save the information | |
5238 | for the output external symbols. */ | |
5239 | eraw_src = input_debug.external_ext; | |
5240 | eraw_end = (eraw_src | |
5241 | + (input_debug.symbolic_header.iextMax | |
5242 | * input_swap->external_ext_size)); | |
5243 | for (; | |
5244 | eraw_src < eraw_end; | |
5245 | eraw_src += input_swap->external_ext_size) | |
5246 | { | |
5247 | EXTR ext; | |
5248 | const char *name; | |
5249 | struct alpha_elf_link_hash_entry *h; | |
5250 | ||
5251 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5252 | if (ext.asym.sc == scNil | |
5253 | || ext.asym.sc == scUndefined | |
5254 | || ext.asym.sc == scSUndefined) | |
5255 | continue; | |
5256 | ||
5257 | name = input_debug.ssext + ext.asym.iss; | |
5258 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
b34976b6 | 5259 | name, FALSE, FALSE, TRUE); |
252b5132 RH |
5260 | if (h == NULL || h->esym.ifd != -2) |
5261 | continue; | |
5262 | ||
5263 | if (ext.ifd != -1) | |
5264 | { | |
5265 | BFD_ASSERT (ext.ifd | |
5266 | < input_debug.symbolic_header.ifdMax); | |
5267 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5268 | } | |
5269 | ||
5270 | h->esym = ext; | |
5271 | } | |
5272 | ||
5273 | /* Free up the information we just read. */ | |
5274 | free (input_debug.line); | |
5275 | free (input_debug.external_dnr); | |
5276 | free (input_debug.external_pdr); | |
5277 | free (input_debug.external_sym); | |
5278 | free (input_debug.external_opt); | |
5279 | free (input_debug.external_aux); | |
5280 | free (input_debug.ss); | |
5281 | free (input_debug.ssext); | |
5282 | free (input_debug.external_fdr); | |
5283 | free (input_debug.external_rfd); | |
5284 | free (input_debug.external_ext); | |
5285 | ||
5286 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5287 | elf_link_input_bfd ignores this section. */ | |
5288 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5289 | } | |
5290 | ||
252b5132 RH |
5291 | /* Build the external symbol information. */ |
5292 | einfo.abfd = abfd; | |
5293 | einfo.info = info; | |
5294 | einfo.debug = &debug; | |
5295 | einfo.swap = swap; | |
b34976b6 | 5296 | einfo.failed = FALSE; |
252b5132 RH |
5297 | elf_link_hash_traverse (elf_hash_table (info), |
5298 | elf64_alpha_output_extsym, | |
5299 | (PTR) &einfo); | |
5300 | if (einfo.failed) | |
b34976b6 | 5301 | return FALSE; |
252b5132 RH |
5302 | |
5303 | /* Set the size of the .mdebug section. */ | |
eea6121a | 5304 | o->size = bfd_ecoff_debug_size (abfd, &debug, swap); |
252b5132 RH |
5305 | |
5306 | /* Skip this section later on (I don't think this currently | |
5307 | matters, but someday it might). */ | |
8423293d | 5308 | o->map_head.link_order = (struct bfd_link_order *) NULL; |
252b5132 RH |
5309 | |
5310 | mdebug_sec = o; | |
5311 | } | |
252b5132 RH |
5312 | } |
5313 | ||
5314 | /* Invoke the regular ELF backend linker to do all the work. */ | |
c152c796 | 5315 | if (! bfd_elf_final_link (abfd, info)) |
b34976b6 | 5316 | return FALSE; |
252b5132 RH |
5317 | |
5318 | /* Now write out the computed sections. */ | |
5319 | ||
5320 | /* The .got subsections... */ | |
5321 | { | |
5322 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5323 | for (i = alpha_elf_hash_table(info)->got_list; | |
5324 | i != NULL; | |
5325 | i = alpha_elf_tdata(i)->got_link_next) | |
5326 | { | |
5327 | asection *sgot; | |
5328 | ||
5329 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5330 | if (i == dynobj) | |
5331 | continue; | |
5332 | ||
5333 | sgot = alpha_elf_tdata(i)->got; | |
5334 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5335 | sgot->contents, |
5336 | (file_ptr) sgot->output_offset, | |
eea6121a | 5337 | sgot->size)) |
b34976b6 | 5338 | return FALSE; |
252b5132 RH |
5339 | } |
5340 | } | |
5341 | ||
252b5132 RH |
5342 | if (mdebug_sec != (asection *) NULL) |
5343 | { | |
5344 | BFD_ASSERT (abfd->output_has_begun); | |
5345 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5346 | swap, info, | |
5347 | mdebug_sec->filepos)) | |
b34976b6 | 5348 | return FALSE; |
252b5132 RH |
5349 | |
5350 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5351 | } | |
5352 | ||
b34976b6 | 5353 | return TRUE; |
252b5132 | 5354 | } |
fcfbdf31 JJ |
5355 | |
5356 | static enum elf_reloc_type_class | |
f51e552e AM |
5357 | elf64_alpha_reloc_type_class (rela) |
5358 | const Elf_Internal_Rela *rela; | |
fcfbdf31 | 5359 | { |
f51e552e | 5360 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5361 | { |
5362 | case R_ALPHA_RELATIVE: | |
5363 | return reloc_class_relative; | |
5364 | case R_ALPHA_JMP_SLOT: | |
5365 | return reloc_class_plt; | |
5366 | case R_ALPHA_COPY: | |
5367 | return reloc_class_copy; | |
5368 | default: | |
5369 | return reloc_class_normal; | |
5370 | } | |
5371 | } | |
252b5132 | 5372 | \f |
2f89ff8d L |
5373 | static struct bfd_elf_special_section const elf64_alpha_special_sections[]= |
5374 | { | |
7dcb9820 AM |
5375 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, |
5376 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_ALPHA_GPREL }, | |
5377 | { NULL, 0, 0, 0, 0 } | |
2f89ff8d L |
5378 | }; |
5379 | ||
252b5132 RH |
5380 | /* ECOFF swapping routines. These are used when dealing with the |
5381 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5382 | from elf32-mips.c. */ |
252b5132 RH |
5383 | static const struct ecoff_debug_swap |
5384 | elf64_alpha_ecoff_debug_swap = | |
5385 | { | |
5386 | /* Symbol table magic number. */ | |
5387 | magicSym2, | |
5388 | /* Alignment of debugging information. E.g., 4. */ | |
5389 | 8, | |
5390 | /* Sizes of external symbolic information. */ | |
5391 | sizeof (struct hdr_ext), | |
5392 | sizeof (struct dnr_ext), | |
5393 | sizeof (struct pdr_ext), | |
5394 | sizeof (struct sym_ext), | |
5395 | sizeof (struct opt_ext), | |
5396 | sizeof (struct fdr_ext), | |
5397 | sizeof (struct rfd_ext), | |
5398 | sizeof (struct ext_ext), | |
5399 | /* Functions to swap in external symbolic data. */ | |
5400 | ecoff_swap_hdr_in, | |
5401 | ecoff_swap_dnr_in, | |
5402 | ecoff_swap_pdr_in, | |
5403 | ecoff_swap_sym_in, | |
5404 | ecoff_swap_opt_in, | |
5405 | ecoff_swap_fdr_in, | |
5406 | ecoff_swap_rfd_in, | |
5407 | ecoff_swap_ext_in, | |
5408 | _bfd_ecoff_swap_tir_in, | |
5409 | _bfd_ecoff_swap_rndx_in, | |
5410 | /* Functions to swap out external symbolic data. */ | |
5411 | ecoff_swap_hdr_out, | |
5412 | ecoff_swap_dnr_out, | |
5413 | ecoff_swap_pdr_out, | |
5414 | ecoff_swap_sym_out, | |
5415 | ecoff_swap_opt_out, | |
5416 | ecoff_swap_fdr_out, | |
5417 | ecoff_swap_rfd_out, | |
5418 | ecoff_swap_ext_out, | |
5419 | _bfd_ecoff_swap_tir_out, | |
5420 | _bfd_ecoff_swap_rndx_out, | |
5421 | /* Function to read in symbolic data. */ | |
5422 | elf64_alpha_read_ecoff_info | |
5423 | }; | |
5424 | \f | |
70bcb145 JW |
5425 | /* Use a non-standard hash bucket size of 8. */ |
5426 | ||
562ace6b | 5427 | static const struct elf_size_info alpha_elf_size_info = |
70bcb145 JW |
5428 | { |
5429 | sizeof (Elf64_External_Ehdr), | |
5430 | sizeof (Elf64_External_Phdr), | |
5431 | sizeof (Elf64_External_Shdr), | |
5432 | sizeof (Elf64_External_Rel), | |
5433 | sizeof (Elf64_External_Rela), | |
5434 | sizeof (Elf64_External_Sym), | |
5435 | sizeof (Elf64_External_Dyn), | |
5436 | sizeof (Elf_External_Note), | |
5437 | 8, | |
5438 | 1, | |
45d6a902 | 5439 | 64, 3, |
70bcb145 JW |
5440 | ELFCLASS64, EV_CURRENT, |
5441 | bfd_elf64_write_out_phdrs, | |
5442 | bfd_elf64_write_shdrs_and_ehdr, | |
5443 | bfd_elf64_write_relocs, | |
73ff0d56 | 5444 | bfd_elf64_swap_symbol_in, |
70bcb145 JW |
5445 | bfd_elf64_swap_symbol_out, |
5446 | bfd_elf64_slurp_reloc_table, | |
5447 | bfd_elf64_slurp_symbol_table, | |
5448 | bfd_elf64_swap_dyn_in, | |
5449 | bfd_elf64_swap_dyn_out, | |
947216bf AM |
5450 | bfd_elf64_swap_reloc_in, |
5451 | bfd_elf64_swap_reloc_out, | |
5452 | bfd_elf64_swap_reloca_in, | |
5453 | bfd_elf64_swap_reloca_out | |
70bcb145 JW |
5454 | }; |
5455 | ||
252b5132 RH |
5456 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5457 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5458 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5459 | #define ELF_MACHINE_CODE EM_ALPHA |
5460 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5461 | |
5462 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5463 | elf64_alpha_bfd_link_hash_table_create | |
5464 | ||
5465 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5466 | elf64_alpha_bfd_reloc_type_lookup | |
5467 | #define elf_info_to_howto \ | |
5468 | elf64_alpha_info_to_howto | |
5469 | ||
5470 | #define bfd_elf64_mkobject \ | |
5471 | elf64_alpha_mkobject | |
5472 | #define elf_backend_object_p \ | |
5473 | elf64_alpha_object_p | |
5474 | ||
5475 | #define elf_backend_section_from_shdr \ | |
5476 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5477 | #define elf_backend_section_flags \ |
5478 | elf64_alpha_section_flags | |
252b5132 RH |
5479 | #define elf_backend_fake_sections \ |
5480 | elf64_alpha_fake_sections | |
5481 | ||
5482 | #define bfd_elf64_bfd_is_local_label_name \ | |
5483 | elf64_alpha_is_local_label_name | |
5484 | #define bfd_elf64_find_nearest_line \ | |
5485 | elf64_alpha_find_nearest_line | |
5486 | #define bfd_elf64_bfd_relax_section \ | |
5487 | elf64_alpha_relax_section | |
5488 | ||
5489 | #define elf_backend_add_symbol_hook \ | |
5490 | elf64_alpha_add_symbol_hook | |
5491 | #define elf_backend_check_relocs \ | |
5492 | elf64_alpha_check_relocs | |
5493 | #define elf_backend_create_dynamic_sections \ | |
5494 | elf64_alpha_create_dynamic_sections | |
5495 | #define elf_backend_adjust_dynamic_symbol \ | |
5496 | elf64_alpha_adjust_dynamic_symbol | |
5497 | #define elf_backend_always_size_sections \ | |
5498 | elf64_alpha_always_size_sections | |
5499 | #define elf_backend_size_dynamic_sections \ | |
5500 | elf64_alpha_size_dynamic_sections | |
5501 | #define elf_backend_relocate_section \ | |
5502 | elf64_alpha_relocate_section | |
5503 | #define elf_backend_finish_dynamic_symbol \ | |
5504 | elf64_alpha_finish_dynamic_symbol | |
5505 | #define elf_backend_finish_dynamic_sections \ | |
5506 | elf64_alpha_finish_dynamic_sections | |
5507 | #define bfd_elf64_bfd_final_link \ | |
5508 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5509 | #define elf_backend_reloc_type_class \ |
5510 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5511 | |
5512 | #define elf_backend_ecoff_debug_swap \ | |
5513 | &elf64_alpha_ecoff_debug_swap | |
5514 | ||
70bcb145 JW |
5515 | #define elf_backend_size_info \ |
5516 | alpha_elf_size_info | |
5517 | ||
2f89ff8d L |
5518 | #define elf_backend_special_sections \ |
5519 | elf64_alpha_special_sections | |
5520 | ||
38b1a46c | 5521 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5522 | #define elf_backend_want_got_plt 0 |
5523 | #define elf_backend_plt_readonly 0 | |
5524 | #define elf_backend_want_plt_sym 1 | |
5525 | #define elf_backend_got_header_size 0 | |
252b5132 RH |
5526 | |
5527 | #include "elf64-target.h" | |
2238051f RH |
5528 | \f |
5529 | /* FreeBSD support. */ | |
5530 | ||
5531 | #undef TARGET_LITTLE_SYM | |
5532 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_freebsd_vec | |
5533 | #undef TARGET_LITTLE_NAME | |
5534 | #define TARGET_LITTLE_NAME "elf64-alpha-freebsd" | |
5535 | ||
5536 | /* The kernel recognizes executables as valid only if they carry a | |
5537 | "FreeBSD" label in the ELF header. So we put this label on all | |
5538 | executables and (for simplicity) also all other object files. */ | |
5539 | ||
5540 | static void elf64_alpha_fbsd_post_process_headers | |
5541 | PARAMS ((bfd *, struct bfd_link_info *)); | |
5542 | ||
5543 | static void | |
5544 | elf64_alpha_fbsd_post_process_headers (abfd, link_info) | |
5545 | bfd * abfd; | |
5546 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; | |
5547 | { | |
5548 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ | |
5549 | ||
5550 | i_ehdrp = elf_elfheader (abfd); | |
5551 | ||
5552 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
5553 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
5554 | #ifdef OLD_FREEBSD_ABI_LABEL | |
5555 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5556 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
5557 | #endif | |
5558 | } | |
5559 | ||
5560 | #undef elf_backend_post_process_headers | |
5561 | #define elf_backend_post_process_headers \ | |
5562 | elf64_alpha_fbsd_post_process_headers | |
5563 | ||
571fe01f | 5564 | #undef elf64_bed |
2238051f RH |
5565 | #define elf64_bed elf64_alpha_fbsd_bed |
5566 | ||
5567 | #include "elf64-target.h" |