Commit | Line | Data |
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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
7898deda NC |
2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Contributed by Richard Henderson <rth@tamu.edu>. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
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 | ||
8fb35fed RH |
50 | static int alpha_elf_dynamic_symbol_p |
51 | PARAMS((struct elf_link_hash_entry *, struct bfd_link_info *)); | |
252b5132 RH |
52 | static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc |
53 | PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
54 | static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create | |
55 | PARAMS((bfd *)); | |
56 | ||
57 | static bfd_reloc_status_type elf64_alpha_reloc_nil | |
58 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
59 | static bfd_reloc_status_type elf64_alpha_reloc_bad | |
60 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
61 | static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp | |
62 | PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *)); | |
63 | static bfd_reloc_status_type elf64_alpha_reloc_gpdisp | |
64 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
65 | ||
66 | static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup | |
67 | PARAMS((bfd *, bfd_reloc_code_real_type)); | |
68 | static void elf64_alpha_info_to_howto | |
69 | PARAMS((bfd *, arelent *, Elf64_Internal_Rela *)); | |
70 | ||
8fb35fed RH |
71 | static boolean elf64_alpha_mkobject |
72 | PARAMS((bfd *)); | |
252b5132 RH |
73 | static boolean elf64_alpha_object_p |
74 | PARAMS((bfd *)); | |
75 | static boolean elf64_alpha_section_from_shdr | |
76 | PARAMS((bfd *, Elf64_Internal_Shdr *, char *)); | |
77 | static boolean elf64_alpha_fake_sections | |
78 | PARAMS((bfd *, Elf64_Internal_Shdr *, asection *)); | |
79 | static boolean elf64_alpha_create_got_section | |
80 | PARAMS((bfd *, struct bfd_link_info *)); | |
81 | static boolean elf64_alpha_create_dynamic_sections | |
82 | PARAMS((bfd *, struct bfd_link_info *)); | |
83 | ||
84 | static boolean elf64_alpha_read_ecoff_info | |
85 | PARAMS((bfd *, asection *, struct ecoff_debug_info *)); | |
86 | static boolean elf64_alpha_is_local_label_name | |
87 | PARAMS((bfd *, const char *)); | |
88 | static boolean elf64_alpha_find_nearest_line | |
89 | PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **, | |
90 | const char **, unsigned int *)); | |
91 | ||
92 | #if defined(__STDC__) || defined(ALMOST_STDC) | |
93 | struct alpha_elf_link_hash_entry; | |
94 | #endif | |
95 | ||
96 | static boolean elf64_alpha_output_extsym | |
97 | PARAMS((struct alpha_elf_link_hash_entry *, PTR)); | |
98 | ||
99 | static boolean elf64_alpha_can_merge_gots | |
100 | PARAMS((bfd *, bfd *)); | |
101 | static void elf64_alpha_merge_gots | |
102 | PARAMS((bfd *, bfd *)); | |
103 | static boolean elf64_alpha_calc_got_offsets_for_symbol | |
104 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); | |
105 | static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *)); | |
106 | static boolean elf64_alpha_size_got_sections | |
107 | PARAMS ((bfd *, struct bfd_link_info *)); | |
108 | static boolean elf64_alpha_always_size_sections | |
109 | PARAMS ((bfd *, struct bfd_link_info *)); | |
110 | static boolean elf64_alpha_calc_dynrel_sizes | |
111 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); | |
112 | static boolean elf64_alpha_add_symbol_hook | |
113 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
114 | const char **, flagword *, asection **, bfd_vma *)); | |
115 | static boolean elf64_alpha_check_relocs | |
116 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, | |
117 | const Elf_Internal_Rela *)); | |
118 | static boolean elf64_alpha_adjust_dynamic_symbol | |
119 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
120 | static boolean elf64_alpha_size_dynamic_sections | |
121 | PARAMS((bfd *, struct bfd_link_info *)); | |
252b5132 RH |
122 | static boolean elf64_alpha_relocate_section |
123 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
124 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
125 | static boolean elf64_alpha_finish_dynamic_symbol | |
126 | PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
127 | Elf_Internal_Sym *)); | |
128 | static boolean elf64_alpha_finish_dynamic_sections | |
129 | PARAMS((bfd *, struct bfd_link_info *)); | |
130 | static boolean elf64_alpha_final_link | |
131 | PARAMS((bfd *, struct bfd_link_info *)); | |
cd6f9321 L |
132 | static boolean elf64_alpha_merge_ind_symbols |
133 | PARAMS((struct alpha_elf_link_hash_entry *, PTR)); | |
134 | static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs | |
135 | PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int)); | |
fcfbdf31 JJ |
136 | static enum elf_reloc_type_class elf64_alpha_reloc_type_class |
137 | PARAMS ((int)); | |
252b5132 RH |
138 | \f |
139 | struct alpha_elf_link_hash_entry | |
140 | { | |
141 | struct elf_link_hash_entry root; | |
142 | ||
143 | /* External symbol information. */ | |
144 | EXTR esym; | |
145 | ||
146 | /* Cumulative flags for all the .got entries. */ | |
147 | int flags; | |
148 | ||
149 | /* Contexts (LITUSE) in which a literal was referenced. */ | |
150 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 | |
151 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
152 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
153 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08 | |
154 | ||
155 | /* Used to implement multiple .got subsections. */ | |
156 | struct alpha_elf_got_entry | |
157 | { | |
158 | struct alpha_elf_got_entry *next; | |
159 | ||
160 | /* which .got subsection? */ | |
161 | bfd *gotobj; | |
162 | ||
163 | /* the addend in effect for this entry. */ | |
52b9d213 | 164 | bfd_signed_vma addend; |
252b5132 RH |
165 | |
166 | /* the .got offset for this entry. */ | |
167 | int got_offset; | |
168 | ||
169 | int flags; | |
170 | ||
171 | /* An additional flag. */ | |
172 | #define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10 | |
173 | ||
174 | int use_count; | |
175 | } *got_entries; | |
176 | ||
177 | /* used to count non-got, non-plt relocations for delayed sizing | |
178 | of relocation sections. */ | |
179 | struct alpha_elf_reloc_entry | |
180 | { | |
181 | struct alpha_elf_reloc_entry *next; | |
182 | ||
183 | /* which .reloc section? */ | |
184 | asection *srel; | |
185 | ||
186 | /* what kind of relocation? */ | |
fcfbdf31 JJ |
187 | unsigned int rtype; |
188 | ||
189 | /* is this against read-only section? */ | |
190 | unsigned int reltext : 1; | |
252b5132 RH |
191 | |
192 | /* how many did we find? */ | |
193 | unsigned long count; | |
194 | } *reloc_entries; | |
195 | }; | |
196 | ||
197 | /* Alpha ELF linker hash table. */ | |
198 | ||
199 | struct alpha_elf_link_hash_table | |
200 | { | |
201 | struct elf_link_hash_table root; | |
202 | ||
203 | /* The head of a list of .got subsections linked through | |
204 | alpha_elf_tdata(abfd)->got_link_next. */ | |
205 | bfd *got_list; | |
206 | }; | |
207 | ||
208 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
209 | ||
210 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
211 | ((struct alpha_elf_link_hash_entry *) \ | |
212 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
213 | (copy), (follow))) | |
214 | ||
215 | /* Traverse a Alpha ELF linker hash table. */ | |
216 | ||
217 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
218 | (elf_link_hash_traverse \ | |
219 | (&(table)->root, \ | |
220 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
221 | (info))) | |
222 | ||
223 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
224 | ||
225 | #define alpha_elf_hash_table(p) \ | |
226 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
227 | ||
228 | /* Get the object's symbols as our own entry type. */ | |
229 | ||
230 | #define alpha_elf_sym_hashes(abfd) \ | |
231 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
232 | ||
233 | /* Should we do dynamic things to this symbol? */ | |
234 | ||
8fb35fed RH |
235 | static int |
236 | alpha_elf_dynamic_symbol_p (h, info) | |
237 | struct elf_link_hash_entry *h; | |
238 | struct bfd_link_info *info; | |
239 | { | |
240 | if (h == NULL) | |
241 | return false; | |
242 | ||
243 | while (h->root.type == bfd_link_hash_indirect | |
244 | || h->root.type == bfd_link_hash_warning) | |
245 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
246 | ||
247 | if (h->dynindx == -1) | |
248 | return false; | |
ca88208a RH |
249 | |
250 | if (h->root.type == bfd_link_hash_undefweak | |
251 | || h->root.type == bfd_link_hash_defweak) | |
252 | return true; | |
253 | ||
2719f880 L |
254 | switch (ELF_ST_VISIBILITY (h->other)) |
255 | { | |
ca88208a RH |
256 | case STV_DEFAULT: |
257 | break; | |
2719f880 | 258 | case STV_HIDDEN: |
ca88208a | 259 | case STV_INTERNAL: |
2719f880 | 260 | return false; |
ca88208a RH |
261 | case STV_PROTECTED: |
262 | if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
263 | return false; | |
264 | break; | |
2719f880 | 265 | } |
8fb35fed | 266 | |
8fb35fed RH |
267 | if ((info->shared && !info->symbolic) |
268 | || ((h->elf_link_hash_flags | |
269 | & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) | |
270 | == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))) | |
271 | return true; | |
272 | ||
273 | return false; | |
274 | } | |
252b5132 RH |
275 | |
276 | /* Create an entry in a Alpha ELF linker hash table. */ | |
277 | ||
278 | static struct bfd_hash_entry * | |
279 | elf64_alpha_link_hash_newfunc (entry, table, string) | |
280 | struct bfd_hash_entry *entry; | |
281 | struct bfd_hash_table *table; | |
282 | const char *string; | |
283 | { | |
284 | struct alpha_elf_link_hash_entry *ret = | |
285 | (struct alpha_elf_link_hash_entry *) entry; | |
286 | ||
287 | /* Allocate the structure if it has not already been allocated by a | |
288 | subclass. */ | |
289 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
290 | ret = ((struct alpha_elf_link_hash_entry *) | |
291 | bfd_hash_allocate (table, | |
292 | sizeof (struct alpha_elf_link_hash_entry))); | |
293 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
294 | return (struct bfd_hash_entry *) ret; | |
295 | ||
296 | /* Call the allocation method of the superclass. */ | |
297 | ret = ((struct alpha_elf_link_hash_entry *) | |
298 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
299 | table, string)); | |
300 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
301 | { | |
302 | /* Set local fields. */ | |
303 | memset (&ret->esym, 0, sizeof (EXTR)); | |
304 | /* We use -2 as a marker to indicate that the information has | |
305 | not been set. -1 means there is no associated ifd. */ | |
306 | ret->esym.ifd = -2; | |
307 | ret->flags = 0; | |
308 | ret->got_entries = NULL; | |
309 | ret->reloc_entries = NULL; | |
310 | } | |
311 | ||
312 | return (struct bfd_hash_entry *) ret; | |
313 | } | |
314 | ||
315 | /* Create a Alpha ELF linker hash table. */ | |
316 | ||
317 | static struct bfd_link_hash_table * | |
318 | elf64_alpha_bfd_link_hash_table_create (abfd) | |
319 | bfd *abfd; | |
320 | { | |
321 | struct alpha_elf_link_hash_table *ret; | |
322 | ||
323 | ret = ((struct alpha_elf_link_hash_table *) | |
324 | bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table))); | |
325 | if (ret == (struct alpha_elf_link_hash_table *) NULL) | |
326 | return NULL; | |
327 | ||
328 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
329 | elf64_alpha_link_hash_newfunc)) | |
330 | { | |
331 | bfd_release (abfd, ret); | |
332 | return NULL; | |
333 | } | |
334 | ||
335 | return &ret->root.root; | |
336 | } | |
337 | \f | |
338 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
339 | ||
340 | struct alpha_elf_obj_tdata | |
341 | { | |
342 | struct elf_obj_tdata root; | |
343 | ||
344 | /* For every input file, these are the got entries for that object's | |
345 | local symbols. */ | |
346 | struct alpha_elf_got_entry ** local_got_entries; | |
347 | ||
348 | /* For every input file, this is the object that owns the got that | |
349 | this input file uses. */ | |
350 | bfd *gotobj; | |
351 | ||
352 | /* For every got, this is a linked list through the objects using this got */ | |
353 | bfd *in_got_link_next; | |
354 | ||
355 | /* For every got, this is a link to the next got subsegment. */ | |
356 | bfd *got_link_next; | |
357 | ||
358 | /* For every got, this is the section. */ | |
359 | asection *got; | |
360 | ||
361 | /* For every got, this is it's total number of *entries*. */ | |
362 | int total_got_entries; | |
363 | ||
364 | /* For every got, this is the sum of the number of *entries* required | |
365 | to hold all of the member object's local got. */ | |
366 | int n_local_got_entries; | |
367 | }; | |
368 | ||
369 | #define alpha_elf_tdata(abfd) \ | |
370 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
371 | ||
372 | static boolean | |
373 | elf64_alpha_mkobject (abfd) | |
374 | bfd *abfd; | |
375 | { | |
376 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); | |
377 | if (abfd->tdata.any == NULL) | |
378 | return false; | |
379 | return true; | |
380 | } | |
381 | ||
382 | static boolean | |
383 | elf64_alpha_object_p (abfd) | |
384 | bfd *abfd; | |
385 | { | |
386 | /* Allocate our special target data. */ | |
387 | struct alpha_elf_obj_tdata *new_tdata; | |
388 | new_tdata = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); | |
389 | if (new_tdata == NULL) | |
390 | return false; | |
391 | new_tdata->root = *abfd->tdata.elf_obj_data; | |
392 | abfd->tdata.any = new_tdata; | |
393 | ||
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 */ | |
411 | true, /* pc_relative */ | |
412 | 0, /* bitpos */ | |
413 | complain_overflow_dont, /* complain_on_overflow */ | |
414 | elf64_alpha_reloc_nil, /* special_function */ | |
415 | "NONE", /* name */ | |
416 | false, /* partial_inplace */ | |
417 | 0, /* src_mask */ | |
418 | 0, /* dst_mask */ | |
419 | true), /* pcrel_offset */ | |
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 */ | |
426 | false, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_bitfield, /* complain_on_overflow */ | |
429 | 0, /* special_function */ | |
430 | "REFLONG", /* name */ | |
431 | false, /* partial_inplace */ | |
432 | 0xffffffff, /* src_mask */ | |
433 | 0xffffffff, /* dst_mask */ | |
434 | false), /* pcrel_offset */ | |
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 */ | |
441 | false, /* pc_relative */ | |
442 | 0, /* bitpos */ | |
443 | complain_overflow_bitfield, /* complain_on_overflow */ | |
444 | 0, /* special_function */ | |
445 | "REFQUAD", /* name */ | |
446 | false, /* partial_inplace */ | |
447 | MINUS_ONE, /* src_mask */ | |
448 | MINUS_ONE, /* dst_mask */ | |
449 | false), /* pcrel_offset */ | |
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 */ | |
458 | false, /* pc_relative */ | |
459 | 0, /* bitpos */ | |
460 | complain_overflow_bitfield, /* complain_on_overflow */ | |
461 | 0, /* special_function */ | |
462 | "GPREL32", /* name */ | |
463 | false, /* partial_inplace */ | |
464 | 0xffffffff, /* src_mask */ | |
465 | 0xffffffff, /* dst_mask */ | |
466 | false), /* pcrel_offset */ | |
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 RH |
472 | 16, /* bitsize */ |
473 | false, /* pc_relative */ | |
474 | 0, /* bitpos */ | |
475 | complain_overflow_signed, /* complain_on_overflow */ | |
476 | 0, /* special_function */ | |
477 | "ELF_LITERAL", /* name */ | |
478 | false, /* partial_inplace */ | |
479 | 0xffff, /* src_mask */ | |
480 | 0xffff, /* dst_mask */ | |
481 | false), /* pcrel_offset */ | |
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 RH |
493 | 32, /* bitsize */ |
494 | false, /* pc_relative */ | |
495 | 0, /* bitpos */ | |
496 | complain_overflow_dont, /* complain_on_overflow */ | |
497 | elf64_alpha_reloc_nil, /* special_function */ | |
498 | "LITUSE", /* name */ | |
499 | false, /* partial_inplace */ | |
500 | 0, /* src_mask */ | |
501 | 0, /* dst_mask */ | |
502 | false), /* pcrel_offset */ | |
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 */ | |
524 | false, /* pc_relative */ | |
525 | 0, /* bitpos */ | |
526 | complain_overflow_dont, /* complain_on_overflow */ | |
527 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
528 | "GPDISP", /* name */ | |
529 | false, /* partial_inplace */ | |
530 | 0xffff, /* src_mask */ | |
531 | 0xffff, /* dst_mask */ | |
532 | true), /* pcrel_offset */ | |
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 */ | |
539 | true, /* pc_relative */ | |
540 | 0, /* bitpos */ | |
541 | complain_overflow_signed, /* complain_on_overflow */ | |
542 | 0, /* special_function */ | |
543 | "BRADDR", /* name */ | |
544 | false, /* partial_inplace */ | |
545 | 0x1fffff, /* src_mask */ | |
546 | 0x1fffff, /* dst_mask */ | |
547 | true), /* pcrel_offset */ | |
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 RH |
553 | 14, /* bitsize */ |
554 | true, /* pc_relative */ | |
555 | 0, /* bitpos */ | |
556 | complain_overflow_dont, /* complain_on_overflow */ | |
557 | 0, /* special_function */ | |
558 | "HINT", /* name */ | |
559 | false, /* partial_inplace */ | |
560 | 0x3fff, /* src_mask */ | |
561 | 0x3fff, /* dst_mask */ | |
562 | true), /* pcrel_offset */ | |
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 */ | |
569 | true, /* pc_relative */ | |
570 | 0, /* bitpos */ | |
571 | complain_overflow_signed, /* complain_on_overflow */ | |
572 | 0, /* special_function */ | |
573 | "SREL16", /* name */ | |
574 | false, /* partial_inplace */ | |
575 | 0xffff, /* src_mask */ | |
576 | 0xffff, /* dst_mask */ | |
16b65e4e | 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 */ | |
584 | true, /* pc_relative */ | |
585 | 0, /* bitpos */ | |
586 | complain_overflow_signed, /* complain_on_overflow */ | |
587 | 0, /* special_function */ | |
588 | "SREL32", /* name */ | |
589 | false, /* partial_inplace */ | |
590 | 0xffffffff, /* src_mask */ | |
591 | 0xffffffff, /* dst_mask */ | |
16b65e4e | 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 */ | |
599 | true, /* pc_relative */ | |
600 | 0, /* bitpos */ | |
601 | complain_overflow_signed, /* complain_on_overflow */ | |
602 | 0, /* special_function */ | |
603 | "SREL64", /* name */ | |
604 | false, /* partial_inplace */ | |
605 | MINUS_ONE, /* src_mask */ | |
606 | MINUS_ONE, /* dst_mask */ | |
16b65e4e | 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 RH |
620 | 16, /* bitsize */ |
621 | false, /* pc_relative */ | |
622 | 0, /* bitpos */ | |
623 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 624 | 0, /* special_function */ |
252b5132 RH |
625 | "GPRELHIGH", /* name */ |
626 | false, /* partial_inplace */ | |
627 | 0xffff, /* src_mask */ | |
628 | 0xffff, /* dst_mask */ | |
629 | false), /* pcrel_offset */ | |
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 RH |
635 | 16, /* bitsize */ |
636 | false, /* pc_relative */ | |
637 | 0, /* bitpos */ | |
638 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 639 | 0, /* special_function */ |
252b5132 RH |
640 | "GPRELLOW", /* name */ |
641 | false, /* partial_inplace */ | |
642 | 0xffff, /* src_mask */ | |
643 | 0xffff, /* dst_mask */ | |
644 | false), /* pcrel_offset */ | |
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 RH |
650 | 16, /* bitsize */ |
651 | false, /* pc_relative */ | |
652 | 0, /* bitpos */ | |
653 | complain_overflow_signed, /* complain_on_overflow */ | |
654 | 0, /* special_function */ | |
dfe57ca0 | 655 | "GPREL16", /* name */ |
252b5132 RH |
656 | false, /* partial_inplace */ |
657 | 0xffff, /* src_mask */ | |
658 | 0xffff, /* dst_mask */ | |
659 | false), /* pcrel_offset */ | |
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, | |
677 | false, | |
678 | 0, | |
679 | complain_overflow_dont, | |
680 | bfd_elf_generic_reloc, | |
681 | "COPY", | |
682 | false, | |
683 | 0, | |
684 | 0, | |
685 | true), | |
686 | ||
687 | /* A dynamic relocation for a .got entry. */ | |
688 | HOWTO (R_ALPHA_GLOB_DAT, | |
689 | 0, | |
690 | 0, | |
691 | 0, | |
692 | false, | |
693 | 0, | |
694 | complain_overflow_dont, | |
695 | bfd_elf_generic_reloc, | |
696 | "GLOB_DAT", | |
697 | false, | |
698 | 0, | |
699 | 0, | |
700 | true), | |
701 | ||
702 | /* A dynamic relocation for a .plt entry. */ | |
703 | HOWTO (R_ALPHA_JMP_SLOT, | |
704 | 0, | |
705 | 0, | |
706 | 0, | |
707 | false, | |
708 | 0, | |
709 | complain_overflow_dont, | |
710 | bfd_elf_generic_reloc, | |
711 | "JMP_SLOT", | |
712 | false, | |
713 | 0, | |
714 | 0, | |
715 | true), | |
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, | |
722 | false, | |
723 | 0, | |
724 | complain_overflow_dont, | |
725 | bfd_elf_generic_reloc, | |
726 | "RELATIVE", | |
727 | false, | |
728 | 0, | |
729 | 0, | |
730 | true) | |
731 | }; | |
732 | ||
733 | /* A relocation function which doesn't do anything. */ | |
734 | ||
735 | static bfd_reloc_status_type | |
736 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 737 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 738 | arelent *reloc; |
56fc028e AJ |
739 | asymbol *sym ATTRIBUTE_UNUSED; |
740 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
741 | asection *sec; |
742 | bfd *output_bfd; | |
56fc028e | 743 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
744 | { |
745 | if (output_bfd) | |
746 | reloc->address += sec->output_offset; | |
747 | return bfd_reloc_ok; | |
748 | } | |
749 | ||
750 | /* A relocation function used for an unsupported reloc. */ | |
751 | ||
752 | static bfd_reloc_status_type | |
753 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 754 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 755 | arelent *reloc; |
56fc028e AJ |
756 | asymbol *sym ATTRIBUTE_UNUSED; |
757 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
758 | asection *sec; |
759 | bfd *output_bfd; | |
56fc028e | 760 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
761 | { |
762 | if (output_bfd) | |
763 | reloc->address += sec->output_offset; | |
764 | return bfd_reloc_notsupported; | |
765 | } | |
766 | ||
767 | /* Do the work of the GPDISP relocation. */ | |
768 | ||
769 | static bfd_reloc_status_type | |
770 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) | |
771 | bfd *abfd; | |
772 | bfd_vma gpdisp; | |
773 | bfd_byte *p_ldah; | |
774 | bfd_byte *p_lda; | |
775 | { | |
776 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
777 | bfd_vma addend; | |
778 | unsigned long i_ldah, i_lda; | |
779 | ||
780 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
781 | i_lda = bfd_get_32 (abfd, p_lda); | |
782 | ||
783 | /* Complain if the instructions are not correct. */ | |
784 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
785 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
786 | ret = bfd_reloc_dangerous; | |
787 | ||
788 | /* Extract the user-supplied offset, mirroring the sign extensions | |
789 | that the instructions perform. */ | |
790 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
791 | addend = (addend ^ 0x80008000) - 0x80008000; | |
792 | ||
793 | gpdisp += addend; | |
794 | ||
795 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
796 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
797 | ret = bfd_reloc_overflow; | |
798 | ||
799 | /* compensate for the sign extension again. */ | |
800 | i_ldah = ((i_ldah & 0xffff0000) | |
801 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
802 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
803 | ||
804 | bfd_put_32 (abfd, i_ldah, p_ldah); | |
805 | bfd_put_32 (abfd, i_lda, p_lda); | |
806 | ||
807 | return ret; | |
808 | } | |
809 | ||
810 | /* The special function for the GPDISP reloc. */ | |
811 | ||
812 | static bfd_reloc_status_type | |
813 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, | |
814 | output_bfd, err_msg) | |
815 | bfd *abfd; | |
816 | arelent *reloc_entry; | |
56fc028e | 817 | asymbol *sym ATTRIBUTE_UNUSED; |
252b5132 RH |
818 | PTR data; |
819 | asection *input_section; | |
820 | bfd *output_bfd; | |
821 | char **err_msg; | |
822 | { | |
823 | bfd_reloc_status_type ret; | |
824 | bfd_vma gp, relocation; | |
825 | bfd_byte *p_ldah, *p_lda; | |
826 | ||
827 | /* Don't do anything if we're not doing a final link. */ | |
828 | if (output_bfd) | |
829 | { | |
830 | reloc_entry->address += input_section->output_offset; | |
831 | return bfd_reloc_ok; | |
832 | } | |
833 | ||
834 | if (reloc_entry->address > input_section->_cooked_size || | |
835 | reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) | |
836 | return bfd_reloc_outofrange; | |
837 | ||
838 | /* The gp used in the portion of the output object to which this | |
839 | input object belongs is cached on the input bfd. */ | |
840 | gp = _bfd_get_gp_value (abfd); | |
841 | ||
842 | relocation = (input_section->output_section->vma | |
843 | + input_section->output_offset | |
844 | + reloc_entry->address); | |
845 | ||
846 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
847 | p_lda = p_ldah + reloc_entry->addend; | |
848 | ||
849 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
850 | ||
851 | /* Complain if the instructions are not correct. */ | |
852 | if (ret == bfd_reloc_dangerous) | |
853 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
854 | ||
855 | return ret; | |
856 | } | |
857 | ||
858 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ | |
859 | ||
860 | struct elf_reloc_map | |
861 | { | |
862 | bfd_reloc_code_real_type bfd_reloc_val; | |
863 | int elf_reloc_val; | |
864 | }; | |
865 | ||
866 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
867 | { | |
dfe57ca0 RH |
868 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
869 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
870 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
871 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
872 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
873 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
874 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
875 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
876 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
877 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
878 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
879 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
880 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
881 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
882 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
883 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
252b5132 RH |
884 | }; |
885 | ||
886 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
887 | ||
888 | static reloc_howto_type * | |
889 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) | |
56fc028e | 890 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
891 | bfd_reloc_code_real_type code; |
892 | { | |
893 | const struct elf_reloc_map *i, *e; | |
894 | i = e = elf64_alpha_reloc_map; | |
895 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
896 | for (; i != e; ++i) | |
897 | { | |
898 | if (i->bfd_reloc_val == code) | |
899 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
900 | } | |
901 | return 0; | |
902 | } | |
903 | ||
904 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
905 | ||
906 | static void | |
907 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) | |
56fc028e | 908 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
909 | arelent *cache_ptr; |
910 | Elf64_Internal_Rela *dst; | |
911 | { | |
912 | unsigned r_type; | |
913 | ||
914 | r_type = ELF64_R_TYPE(dst->r_info); | |
915 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); | |
916 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
917 | } | |
918 | \f | |
fe8bc63d | 919 | /* These functions do relaxation for Alpha ELF. |
252b5132 RH |
920 | |
921 | Currently I'm only handling what I can do with existing compiler | |
922 | and assembler support, which means no instructions are removed, | |
923 | though some may be nopped. At this time GCC does not emit enough | |
924 | information to do all of the relaxing that is possible. It will | |
925 | take some not small amount of work for that to happen. | |
926 | ||
927 | There are a couple of interesting papers that I once read on this | |
928 | subject, that I cannot find references to at the moment, that | |
929 | related to Alpha in particular. They are by David Wall, then of | |
930 | DEC WRL. */ | |
931 | ||
932 | #define OP_LDA 0x08 | |
933 | #define OP_LDAH 0x09 | |
934 | #define INSN_JSR 0x68004000 | |
935 | #define INSN_JSR_MASK 0xfc00c000 | |
936 | #define OP_LDQ 0x29 | |
937 | #define OP_BR 0x30 | |
938 | #define OP_BSR 0x34 | |
939 | #define INSN_UNOP 0x2fe00000 | |
940 | ||
941 | struct alpha_relax_info | |
942 | { | |
943 | bfd *abfd; | |
944 | asection *sec; | |
945 | bfd_byte *contents; | |
946 | Elf_Internal_Rela *relocs, *relend; | |
947 | struct bfd_link_info *link_info; | |
948 | boolean changed_contents; | |
949 | boolean changed_relocs; | |
950 | bfd_vma gp; | |
951 | bfd *gotobj; | |
952 | asection *tsec; | |
953 | struct alpha_elf_link_hash_entry *h; | |
954 | struct alpha_elf_got_entry *gotent; | |
955 | unsigned char other; | |
956 | }; | |
957 | ||
958 | static Elf_Internal_Rela * elf64_alpha_relax_with_lituse | |
fe8bc63d | 959 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
252b5132 RH |
960 | Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend)); |
961 | ||
962 | static boolean elf64_alpha_relax_without_lituse | |
fe8bc63d | 963 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
252b5132 RH |
964 | Elf_Internal_Rela *irel)); |
965 | ||
966 | static bfd_vma elf64_alpha_relax_opt_call | |
967 | PARAMS((struct alpha_relax_info *info, bfd_vma symval)); | |
968 | ||
969 | static boolean elf64_alpha_relax_section | |
970 | PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, | |
971 | boolean *again)); | |
972 | ||
973 | static Elf_Internal_Rela * | |
974 | elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) | |
975 | Elf_Internal_Rela *rel, *relend; | |
976 | bfd_vma offset; | |
977 | int type; | |
978 | { | |
979 | while (rel < relend) | |
980 | { | |
52b9d213 AM |
981 | if (rel->r_offset == offset |
982 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
252b5132 RH |
983 | return rel; |
984 | ++rel; | |
985 | } | |
986 | return NULL; | |
987 | } | |
988 | ||
989 | static Elf_Internal_Rela * | |
990 | elf64_alpha_relax_with_lituse (info, symval, irel, irelend) | |
991 | struct alpha_relax_info *info; | |
992 | bfd_vma symval; | |
993 | Elf_Internal_Rela *irel, *irelend; | |
994 | { | |
995 | Elf_Internal_Rela *urel; | |
996 | int flags, count, i; | |
997 | bfd_signed_vma disp; | |
998 | boolean fits16; | |
999 | boolean fits32; | |
1000 | boolean lit_reused = false; | |
1001 | boolean all_optimized = true; | |
1002 | unsigned int lit_insn; | |
1003 | ||
1004 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1005 | if (lit_insn >> 26 != OP_LDQ) | |
1006 | { | |
1007 | ((*_bfd_error_handler) | |
1008 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", | |
1009 | bfd_get_filename (info->abfd), info->sec->name, | |
1010 | (unsigned long)irel->r_offset)); | |
1011 | return irel; | |
1012 | } | |
1013 | ||
1014 | /* Summarize how this particular LITERAL is used. */ | |
1015 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
1016 | { | |
1017 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) | |
1018 | break; | |
1019 | if (urel->r_addend >= 0 && urel->r_addend <= 3) | |
1020 | flags |= 1 << urel->r_addend; | |
1021 | } | |
1022 | ||
fe8bc63d | 1023 | /* A little preparation for the loop... */ |
252b5132 | 1024 | disp = symval - info->gp; |
252b5132 RH |
1025 | |
1026 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) | |
1027 | { | |
1028 | unsigned int insn; | |
ffcb7aff NC |
1029 | int insn_disp; |
1030 | bfd_signed_vma xdisp; | |
1031 | ||
252b5132 RH |
1032 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
1033 | ||
1034 | switch (urel->r_addend) | |
1035 | { | |
1036 | default: /* 0 = ADDRESS FORMAT */ | |
1037 | /* This type is really just a placeholder to note that all | |
1038 | uses cannot be optimized, but to still allow some. */ | |
1039 | all_optimized = false; | |
1040 | break; | |
1041 | ||
1042 | case 1: /* MEM FORMAT */ | |
1043 | /* We can always optimize 16-bit displacements. */ | |
ffcb7aff NC |
1044 | |
1045 | /* Extract the displacement from the instruction, sign-extending | |
1046 | it if necessary, then test whether it is within 16 or 32 bits | |
1047 | displacement from GP. */ | |
1048 | insn_disp = insn & 0x0000ffff; | |
1049 | if (insn_disp & 0x00008000) | |
1050 | insn_disp |= 0xffff0000; /* Negative: sign-extend. */ | |
1051 | ||
1052 | xdisp = disp + insn_disp; | |
1053 | fits16 = (xdisp >= - (bfd_signed_vma) 0x00008000 && xdisp < 0x00008000); | |
1054 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 && xdisp < 0x7fff8000); | |
1055 | ||
252b5132 RH |
1056 | if (fits16) |
1057 | { | |
ffcb7aff | 1058 | /* Take the op code and dest from this insn, take the base |
fe8bc63d | 1059 | register from the literal insn. Leave the offset alone. */ |
ffcb7aff | 1060 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); |
252b5132 | 1061 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
dfe57ca0 | 1062 | R_ALPHA_GPREL16); |
252b5132 RH |
1063 | urel->r_addend = irel->r_addend; |
1064 | info->changed_relocs = true; | |
1065 | ||
1066 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); | |
1067 | info->changed_contents = true; | |
1068 | } | |
1069 | ||
1070 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ | |
1071 | else if (fits32 && !(flags & ~6)) | |
1072 | { | |
ffcb7aff | 1073 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ |
252b5132 RH |
1074 | |
1075 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1076 | R_ALPHA_GPRELHIGH); | |
1077 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
1078 | bfd_put_32 (info->abfd, lit_insn, | |
1079 | info->contents + irel->r_offset); | |
1080 | lit_reused = true; | |
1081 | info->changed_contents = true; | |
1082 | ||
1083 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1084 | R_ALPHA_GPRELLOW); | |
1085 | urel->r_addend = irel->r_addend; | |
1086 | info->changed_relocs = true; | |
1087 | } | |
1088 | else | |
1089 | all_optimized = false; | |
1090 | break; | |
1091 | ||
1092 | case 2: /* BYTE OFFSET FORMAT */ | |
1093 | /* We can always optimize byte instructions. */ | |
1094 | ||
1095 | /* FIXME: sanity check the insn for byte op. Check that the | |
1096 | literal dest reg is indeed Rb in the byte insn. */ | |
1097 | ||
1098 | insn = (insn & ~0x001ff000) | ((symval & 7) << 13) | 0x1000; | |
1099 | ||
1100 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1101 | urel->r_addend = 0; | |
1102 | info->changed_relocs = true; | |
1103 | ||
1104 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); | |
1105 | info->changed_contents = true; | |
1106 | break; | |
1107 | ||
1108 | case 3: /* CALL FORMAT */ | |
1109 | { | |
1110 | /* If not zero, place to jump without needing pv. */ | |
1111 | bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval); | |
1112 | bfd_vma org = (info->sec->output_section->vma | |
1113 | + info->sec->output_offset | |
1114 | + urel->r_offset + 4); | |
1115 | bfd_signed_vma odisp; | |
1116 | ||
1117 | odisp = (optdest ? optdest : symval) - org; | |
1118 | if (odisp >= -0x400000 && odisp < 0x400000) | |
1119 | { | |
1120 | Elf_Internal_Rela *xrel; | |
1121 | ||
fe8bc63d | 1122 | /* Preserve branch prediction call stack when possible. */ |
252b5132 RH |
1123 | if ((insn & INSN_JSR_MASK) == INSN_JSR) |
1124 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
1125 | else | |
1126 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
fe8bc63d | 1127 | |
252b5132 RH |
1128 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
1129 | R_ALPHA_BRADDR); | |
1130 | urel->r_addend = irel->r_addend; | |
1131 | ||
1132 | if (optdest) | |
1133 | urel->r_addend += optdest - symval; | |
1134 | else | |
1135 | all_optimized = false; | |
1136 | ||
1137 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); | |
1138 | ||
1139 | /* Kill any HINT reloc that might exist for this insn. */ | |
1140 | xrel = (elf64_alpha_find_reloc_at_ofs | |
fe8bc63d | 1141 | (info->relocs, info->relend, urel->r_offset, |
252b5132 RH |
1142 | R_ALPHA_HINT)); |
1143 | if (xrel) | |
1144 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1145 | ||
1146 | info->changed_contents = true; | |
1147 | info->changed_relocs = true; | |
1148 | } | |
1149 | else | |
1150 | all_optimized = false; | |
1151 | ||
1cd6895c RH |
1152 | /* Even if the target is not in range for a direct branch, |
1153 | if we share a GP, we can eliminate the gp reload. */ | |
1154 | if (optdest) | |
1155 | { | |
1156 | Elf_Internal_Rela *gpdisp | |
1157 | = (elf64_alpha_find_reloc_at_ofs | |
1158 | (irel, irelend, urel->r_offset + 4, R_ALPHA_GPDISP)); | |
1159 | if (gpdisp) | |
1160 | { | |
1161 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
1162 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
1163 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
1164 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
1165 | ||
1166 | /* Verify that the instruction is "ldah $29,0($26)". | |
1167 | Consider a function that ends in a noreturn call, | |
1168 | and that the next function begins with an ldgp, | |
1169 | and that by accident there is no padding between. | |
1170 | In that case the insn would use $27 as the base. */ | |
1171 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
1172 | { | |
1173 | bfd_put_32 (info->abfd, INSN_UNOP, p_ldah); | |
1174 | bfd_put_32 (info->abfd, INSN_UNOP, p_lda); | |
1175 | ||
1176 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1177 | info->changed_contents = true; | |
1178 | info->changed_relocs = true; | |
1179 | } | |
1180 | } | |
1181 | } | |
252b5132 RH |
1182 | } |
1183 | break; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* If all cases were optimized, we can reduce the use count on this | |
1188 | got entry by one, possibly eliminating it. */ | |
1189 | if (all_optimized) | |
1190 | { | |
1191 | info->gotent->use_count -= 1; | |
1192 | alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; | |
1193 | if (!info->h) | |
1194 | alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; | |
1195 | ||
1196 | /* If the literal instruction is no longer needed (it may have been | |
1197 | reused. We can eliminate it. | |
1198 | ??? For now, I don't want to deal with compacting the section, | |
1199 | so just nop it out. */ | |
1200 | if (!lit_reused) | |
1201 | { | |
1202 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1203 | info->changed_relocs = true; | |
1204 | ||
1205 | bfd_put_32 (info->abfd, INSN_UNOP, info->contents + irel->r_offset); | |
1206 | info->changed_contents = true; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | return irel + count; | |
1211 | } | |
1212 | ||
1213 | static bfd_vma | |
1214 | elf64_alpha_relax_opt_call (info, symval) | |
1215 | struct alpha_relax_info *info; | |
1216 | bfd_vma symval; | |
1217 | { | |
1218 | /* If the function has the same gp, and we can identify that the | |
1219 | function does not use its function pointer, we can eliminate the | |
1220 | address load. */ | |
1221 | ||
1222 | /* If the symbol is marked NOPV, we are being told the function never | |
1223 | needs its procedure value. */ | |
c810873d | 1224 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) |
252b5132 RH |
1225 | return symval; |
1226 | ||
1227 | /* If the symbol is marked STD_GP, we are being told the function does | |
fe8bc63d | 1228 | a normal ldgp in the first two words. */ |
c810873d | 1229 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) |
252b5132 RH |
1230 | ; |
1231 | ||
1232 | /* Otherwise, we may be able to identify a GP load in the first two | |
1233 | words, which we can then skip. */ | |
fe8bc63d | 1234 | else |
252b5132 RH |
1235 | { |
1236 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; | |
1237 | bfd_vma ofs; | |
1238 | ||
fe8bc63d | 1239 | /* Load the relocations from the section that the target symbol is in. */ |
252b5132 RH |
1240 | if (info->sec == info->tsec) |
1241 | { | |
1242 | tsec_relocs = info->relocs; | |
1243 | tsec_relend = info->relend; | |
1244 | tsec_free = NULL; | |
1245 | } | |
1246 | else | |
1247 | { | |
1248 | tsec_relocs = (_bfd_elf64_link_read_relocs | |
1249 | (info->abfd, info->tsec, (PTR) NULL, | |
1250 | (Elf_Internal_Rela *) NULL, | |
1251 | info->link_info->keep_memory)); | |
1252 | if (tsec_relocs == NULL) | |
1253 | return 0; | |
1254 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
1255 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
1256 | } | |
1257 | ||
1258 | /* Recover the symbol's offset within the section. */ | |
1259 | ofs = (symval - info->tsec->output_section->vma | |
1260 | - info->tsec->output_offset); | |
fe8bc63d | 1261 | |
252b5132 RH |
1262 | /* Look for a GPDISP reloc. */ |
1263 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
1264 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
1265 | ||
1266 | if (!gpdisp || gpdisp->r_addend != 4) | |
1267 | { | |
1268 | if (tsec_free) | |
1269 | free (tsec_free); | |
1270 | return 0; | |
1271 | } | |
1272 | if (tsec_free) | |
1273 | free (tsec_free); | |
1274 | } | |
1275 | ||
fe8bc63d | 1276 | /* We've now determined that we can skip an initial gp load. Verify |
252b5132 RH |
1277 | that the call and the target use the same gp. */ |
1278 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
1279 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
1280 | return 0; | |
1281 | ||
1282 | return symval + 8; | |
1283 | } | |
1284 | ||
1285 | static boolean | |
1286 | elf64_alpha_relax_without_lituse (info, symval, irel) | |
1287 | struct alpha_relax_info *info; | |
1288 | bfd_vma symval; | |
1289 | Elf_Internal_Rela *irel; | |
1290 | { | |
1291 | unsigned int insn; | |
1292 | bfd_signed_vma disp; | |
1293 | ||
1294 | /* Get the instruction. */ | |
1295 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1296 | ||
1297 | if (insn >> 26 != OP_LDQ) | |
1298 | { | |
1299 | ((*_bfd_error_handler) | |
1300 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", | |
1301 | bfd_get_filename (info->abfd), info->sec->name, | |
1302 | (unsigned long) irel->r_offset)); | |
1303 | return true; | |
1304 | } | |
1305 | ||
1306 | /* So we aren't told much. Do what we can with the address load and | |
1307 | fake the rest. All of the optimizations here require that the | |
1308 | offset from the GP fit in 16 bits. */ | |
1309 | ||
1310 | disp = symval - info->gp; | |
1311 | if (disp < -0x8000 || disp >= 0x8000) | |
1312 | return true; | |
1313 | ||
1314 | /* On the LITERAL instruction itself, consider exchanging | |
1315 | `ldq R,X(gp)' for `lda R,Y(gp)'. */ | |
1316 | ||
1317 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
1318 | bfd_put_32 (info->abfd, insn, info->contents + irel->r_offset); | |
1319 | info->changed_contents = true; | |
1320 | ||
dfe57ca0 | 1321 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPREL16); |
252b5132 RH |
1322 | info->changed_relocs = true; |
1323 | ||
1324 | /* Reduce the use count on this got entry by one, possibly | |
1325 | eliminating it. */ | |
1326 | info->gotent->use_count -= 1; | |
1327 | alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; | |
1328 | if (!info->h) | |
1329 | alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; | |
1330 | ||
1331 | /* ??? Search forward through this basic block looking for insns | |
1332 | that use the target register. Stop after an insn modifying the | |
1333 | register is seen, or after a branch or call. | |
1334 | ||
1335 | Any such memory load insn may be substituted by a load directly | |
1336 | off the GP. This allows the memory load insn to be issued before | |
fe8bc63d | 1337 | the calculated GP register would otherwise be ready. |
252b5132 RH |
1338 | |
1339 | Any such jsr insn can be replaced by a bsr if it is in range. | |
1340 | ||
1341 | This would mean that we'd have to _add_ relocations, the pain of | |
1342 | which gives one pause. */ | |
1343 | ||
1344 | return true; | |
1345 | } | |
1346 | ||
1347 | static boolean | |
1348 | elf64_alpha_relax_section (abfd, sec, link_info, again) | |
1349 | bfd *abfd; | |
1350 | asection *sec; | |
1351 | struct bfd_link_info *link_info; | |
1352 | boolean *again; | |
1353 | { | |
1354 | Elf_Internal_Shdr *symtab_hdr; | |
1355 | Elf_Internal_Rela *internal_relocs; | |
1356 | Elf_Internal_Rela *free_relocs = NULL; | |
1357 | Elf_Internal_Rela *irel, *irelend; | |
1358 | bfd_byte *free_contents = NULL; | |
1359 | Elf64_External_Sym *extsyms = NULL; | |
1360 | Elf64_External_Sym *free_extsyms = NULL; | |
1361 | struct alpha_elf_got_entry **local_got_entries; | |
1362 | struct alpha_relax_info info; | |
1363 | ||
1364 | /* We are not currently changing any sizes, so only one pass. */ | |
1365 | *again = false; | |
1366 | ||
1367 | if (link_info->relocateable | |
1368 | || (sec->flags & SEC_RELOC) == 0 | |
1369 | || sec->reloc_count == 0) | |
1370 | return true; | |
1371 | ||
1372 | /* If this is the first time we have been called for this section, | |
1373 | initialize the cooked size. */ | |
1374 | if (sec->_cooked_size == 0) | |
1375 | sec->_cooked_size = sec->_raw_size; | |
1376 | ||
1377 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1378 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
1379 | ||
1380 | /* Load the relocations for this section. */ | |
1381 | internal_relocs = (_bfd_elf64_link_read_relocs | |
1382 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
1383 | link_info->keep_memory)); | |
1384 | if (internal_relocs == NULL) | |
1385 | goto error_return; | |
1386 | if (! link_info->keep_memory) | |
1387 | free_relocs = internal_relocs; | |
1388 | ||
fe8bc63d | 1389 | memset(&info, 0, sizeof (info)); |
252b5132 RH |
1390 | info.abfd = abfd; |
1391 | info.sec = sec; | |
1392 | info.link_info = link_info; | |
1393 | info.relocs = internal_relocs; | |
1394 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
1395 | ||
1396 | /* Find the GP for this object. */ | |
1397 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; | |
1398 | if (info.gotobj) | |
1399 | { | |
1400 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; | |
1401 | info.gp = _bfd_get_gp_value (info.gotobj); | |
1402 | if (info.gp == 0) | |
1403 | { | |
1404 | info.gp = (sgot->output_section->vma | |
1405 | + sgot->output_offset | |
1406 | + 0x8000); | |
1407 | _bfd_set_gp_value (info.gotobj, info.gp); | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | for (irel = internal_relocs; irel < irelend; irel++) | |
1412 | { | |
1413 | bfd_vma symval; | |
1414 | Elf_Internal_Sym isym; | |
1415 | struct alpha_elf_got_entry *gotent; | |
1416 | ||
1417 | if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL) | |
1418 | continue; | |
1419 | ||
1420 | /* Get the section contents. */ | |
1421 | if (info.contents == NULL) | |
1422 | { | |
1423 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1424 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
1425 | else | |
1426 | { | |
1427 | info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
1428 | if (info.contents == NULL) | |
1429 | goto error_return; | |
1430 | free_contents = info.contents; | |
1431 | ||
1432 | if (! bfd_get_section_contents (abfd, sec, info.contents, | |
1433 | (file_ptr) 0, sec->_raw_size)) | |
1434 | goto error_return; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | /* Read this BFD's symbols if we haven't done so already. */ | |
1439 | if (extsyms == NULL) | |
1440 | { | |
1441 | if (symtab_hdr->contents != NULL) | |
1442 | extsyms = (Elf64_External_Sym *) symtab_hdr->contents; | |
1443 | else | |
1444 | { | |
1445 | extsyms = ((Elf64_External_Sym *) | |
1446 | bfd_malloc (symtab_hdr->sh_size)); | |
1447 | if (extsyms == NULL) | |
1448 | goto error_return; | |
1449 | free_extsyms = extsyms; | |
1450 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
1451 | || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) | |
1452 | != symtab_hdr->sh_size)) | |
1453 | goto error_return; | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | /* Get the value of the symbol referred to by the reloc. */ | |
1458 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1459 | { | |
1460 | /* A local symbol. */ | |
1461 | bfd_elf64_swap_symbol_in (abfd, | |
1462 | extsyms + ELF64_R_SYM (irel->r_info), | |
1463 | &isym); | |
1464 | if (isym.st_shndx == SHN_UNDEF) | |
1465 | info.tsec = bfd_und_section_ptr; | |
1466 | else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) | |
1467 | info.tsec = bfd_section_from_elf_index (abfd, isym.st_shndx); | |
1468 | else if (isym.st_shndx == SHN_ABS) | |
1469 | info.tsec = bfd_abs_section_ptr; | |
1470 | else if (isym.st_shndx == SHN_COMMON) | |
1471 | info.tsec = bfd_com_section_ptr; | |
fe8bc63d KH |
1472 | else |
1473 | continue; /* who knows. */ | |
252b5132 RH |
1474 | |
1475 | info.h = NULL; | |
1476 | info.other = isym.st_other; | |
1477 | gotent = local_got_entries[ELF64_R_SYM(irel->r_info)]; | |
1478 | symval = isym.st_value; | |
1479 | } | |
1480 | else | |
1481 | { | |
1482 | unsigned long indx; | |
1483 | struct alpha_elf_link_hash_entry *h; | |
1484 | ||
1485 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1486 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
1487 | BFD_ASSERT (h != NULL); | |
1488 | ||
1489 | while (h->root.root.type == bfd_link_hash_indirect | |
1490 | || h->root.root.type == bfd_link_hash_warning) | |
1491 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
1492 | ||
1493 | /* We can't do anthing with undefined or dynamic symbols. */ | |
1494 | if (h->root.root.type == bfd_link_hash_undefined | |
1495 | || h->root.root.type == bfd_link_hash_undefweak | |
1496 | || alpha_elf_dynamic_symbol_p (&h->root, link_info)) | |
1497 | continue; | |
1498 | ||
1499 | info.h = h; | |
252b5132 RH |
1500 | info.tsec = h->root.root.u.def.section; |
1501 | info.other = h->root.other; | |
1502 | gotent = h->got_entries; | |
1503 | symval = h->root.root.u.def.value; | |
1504 | } | |
1505 | ||
1506 | /* Search for the got entry to be used by this relocation. */ | |
1507 | while (gotent->gotobj != info.gotobj || gotent->addend != irel->r_addend) | |
1508 | gotent = gotent->next; | |
1509 | info.gotent = gotent; | |
1510 | ||
1511 | symval += info.tsec->output_section->vma + info.tsec->output_offset; | |
1512 | symval += irel->r_addend; | |
1513 | ||
1514 | BFD_ASSERT(info.gotent != NULL); | |
1515 | ||
1516 | /* If there exist LITUSE relocations immediately following, this | |
1517 | opens up all sorts of interesting optimizations, because we | |
1518 | now know every location that this address load is used. */ | |
1519 | ||
1520 | if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
1521 | { | |
1522 | irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend); | |
1523 | if (irel == NULL) | |
1524 | goto error_return; | |
1525 | } | |
1526 | else | |
1527 | { | |
1528 | if (!elf64_alpha_relax_without_lituse (&info, symval, irel)) | |
1529 | goto error_return; | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | if (!elf64_alpha_size_got_sections (abfd, link_info)) | |
1534 | return false; | |
1535 | ||
1536 | if (info.changed_relocs) | |
1537 | { | |
1538 | elf_section_data (sec)->relocs = internal_relocs; | |
1539 | } | |
1540 | else if (free_relocs != NULL) | |
1541 | { | |
1542 | free (free_relocs); | |
1543 | } | |
1544 | ||
1545 | if (info.changed_contents) | |
1546 | { | |
1547 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
1548 | } | |
1549 | else if (free_contents != NULL) | |
1550 | { | |
1551 | if (! link_info->keep_memory) | |
1552 | free (free_contents); | |
1553 | else | |
1554 | { | |
1555 | /* Cache the section contents for elf_link_input_bfd. */ | |
1556 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | if (free_extsyms != NULL) | |
1561 | { | |
1562 | if (! link_info->keep_memory) | |
1563 | free (free_extsyms); | |
1564 | else | |
1565 | { | |
1566 | /* Cache the symbols for elf_link_input_bfd. */ | |
1567 | symtab_hdr->contents = extsyms; | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | *again = info.changed_contents || info.changed_relocs; | |
1572 | ||
1573 | return true; | |
1574 | ||
1575 | error_return: | |
1576 | if (free_relocs != NULL) | |
1577 | free (free_relocs); | |
1578 | if (free_contents != NULL) | |
1579 | free (free_contents); | |
1580 | if (free_extsyms != NULL) | |
1581 | free (free_extsyms); | |
1582 | return false; | |
1583 | } | |
1584 | \f | |
1585 | /* PLT/GOT Stuff */ | |
1586 | #define PLT_HEADER_SIZE 32 | |
1587 | #define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */ | |
1588 | #define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */ | |
1589 | #define PLT_HEADER_WORD3 0x47ff041f /* nop */ | |
1590 | #define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */ | |
1591 | ||
1592 | #define PLT_ENTRY_SIZE 12 | |
1593 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ | |
1594 | #define PLT_ENTRY_WORD2 0 | |
1595 | #define PLT_ENTRY_WORD3 0 | |
1596 | ||
1597 | #define MAX_GOT_ENTRIES (64*1024 / 8) | |
1598 | ||
1599 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
1600 | \f | |
1601 | /* Handle an Alpha specific section when reading an object file. This | |
1602 | is called when elfcode.h finds a section with an unknown type. | |
1603 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
1604 | how to. */ | |
1605 | ||
1606 | static boolean | |
1607 | elf64_alpha_section_from_shdr (abfd, hdr, name) | |
1608 | bfd *abfd; | |
1609 | Elf64_Internal_Shdr *hdr; | |
1610 | char *name; | |
1611 | { | |
1612 | asection *newsect; | |
1613 | ||
1614 | /* There ought to be a place to keep ELF backend specific flags, but | |
1615 | at the moment there isn't one. We just keep track of the | |
1616 | sections by their name, instead. Fortunately, the ABI gives | |
1617 | suggested names for all the MIPS specific sections, so we will | |
1618 | probably get away with this. */ | |
1619 | switch (hdr->sh_type) | |
1620 | { | |
1621 | case SHT_ALPHA_DEBUG: | |
1622 | if (strcmp (name, ".mdebug") != 0) | |
1623 | return false; | |
1624 | break; | |
252b5132 RH |
1625 | default: |
1626 | return false; | |
1627 | } | |
1628 | ||
1629 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1630 | return false; | |
1631 | newsect = hdr->bfd_section; | |
1632 | ||
1633 | if (hdr->sh_type == SHT_ALPHA_DEBUG) | |
1634 | { | |
1635 | if (! bfd_set_section_flags (abfd, newsect, | |
1636 | (bfd_get_section_flags (abfd, newsect) | |
1637 | | SEC_DEBUGGING))) | |
1638 | return false; | |
1639 | } | |
1640 | ||
252b5132 RH |
1641 | return true; |
1642 | } | |
1643 | ||
1644 | /* Set the correct type for an Alpha ELF section. We do this by the | |
1645 | section name, which is a hack, but ought to work. */ | |
1646 | ||
1647 | static boolean | |
1648 | elf64_alpha_fake_sections (abfd, hdr, sec) | |
1649 | bfd *abfd; | |
1650 | Elf64_Internal_Shdr *hdr; | |
1651 | asection *sec; | |
1652 | { | |
1653 | register const char *name; | |
1654 | ||
1655 | name = bfd_get_section_name (abfd, sec); | |
1656 | ||
1657 | if (strcmp (name, ".mdebug") == 0) | |
1658 | { | |
1659 | hdr->sh_type = SHT_ALPHA_DEBUG; | |
1660 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
1661 | entsize of 0. FIXME: Does this matter? */ | |
1662 | if ((abfd->flags & DYNAMIC) != 0 ) | |
1663 | hdr->sh_entsize = 0; | |
1664 | else | |
1665 | hdr->sh_entsize = 1; | |
1666 | } | |
252b5132 RH |
1667 | else if (strcmp (name, ".sdata") == 0 |
1668 | || strcmp (name, ".sbss") == 0 | |
1669 | || strcmp (name, ".lit4") == 0 | |
1670 | || strcmp (name, ".lit8") == 0) | |
1671 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
1672 | ||
1673 | return true; | |
1674 | } | |
1675 | ||
1676 | /* Hook called by the linker routine which adds symbols from an object | |
1677 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
1678 | ||
1679 | static boolean | |
1680 | elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
1681 | bfd *abfd; | |
1682 | struct bfd_link_info *info; | |
1683 | const Elf_Internal_Sym *sym; | |
56fc028e AJ |
1684 | const char **namep ATTRIBUTE_UNUSED; |
1685 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
1686 | asection **secp; |
1687 | bfd_vma *valp; | |
1688 | { | |
1689 | if (sym->st_shndx == SHN_COMMON | |
1690 | && !info->relocateable | |
c0846b23 | 1691 | && sym->st_size <= elf_gp_size (abfd)) |
252b5132 RH |
1692 | { |
1693 | /* Common symbols less than or equal to -G nn bytes are | |
1694 | automatically put into .sbss. */ | |
1695 | ||
1696 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
1697 | ||
1698 | if (scomm == NULL) | |
1699 | { | |
1700 | scomm = bfd_make_section (abfd, ".scommon"); | |
1701 | if (scomm == NULL | |
1702 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC | |
1703 | | SEC_IS_COMMON | |
1704 | | SEC_LINKER_CREATED))) | |
1705 | return false; | |
1706 | } | |
1707 | ||
1708 | *secp = scomm; | |
1709 | *valp = sym->st_size; | |
1710 | } | |
1711 | ||
1712 | return true; | |
1713 | } | |
1714 | ||
1715 | /* Create the .got section. */ | |
1716 | ||
1717 | static boolean | |
1718 | elf64_alpha_create_got_section(abfd, info) | |
1719 | bfd *abfd; | |
56fc028e | 1720 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1721 | { |
1722 | asection *s; | |
1723 | ||
1724 | if (bfd_get_section_by_name (abfd, ".got")) | |
1725 | return true; | |
1726 | ||
1727 | s = bfd_make_section (abfd, ".got"); | |
1728 | if (s == NULL | |
1729 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1730 | | SEC_HAS_CONTENTS | |
1731 | | SEC_IN_MEMORY | |
1732 | | SEC_LINKER_CREATED)) | |
1733 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1734 | return false; | |
1735 | ||
1736 | alpha_elf_tdata (abfd)->got = s; | |
1737 | ||
1738 | return true; | |
1739 | } | |
1740 | ||
1741 | /* Create all the dynamic sections. */ | |
1742 | ||
1743 | static boolean | |
1744 | elf64_alpha_create_dynamic_sections (abfd, info) | |
1745 | bfd *abfd; | |
1746 | struct bfd_link_info *info; | |
1747 | { | |
1748 | asection *s; | |
1749 | struct elf_link_hash_entry *h; | |
1750 | ||
1751 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ | |
1752 | ||
1753 | s = bfd_make_section (abfd, ".plt"); | |
1754 | if (s == NULL | |
1755 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1756 | | SEC_HAS_CONTENTS | |
1757 | | SEC_IN_MEMORY | |
1758 | | SEC_LINKER_CREATED | |
1759 | | SEC_CODE)) | |
1760 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1761 | return false; | |
1762 | ||
1763 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
1764 | .plt section. */ | |
1765 | h = NULL; | |
1766 | if (! (_bfd_generic_link_add_one_symbol | |
1767 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
1768 | (bfd_vma) 0, (const char *) NULL, false, | |
1769 | get_elf_backend_data (abfd)->collect, | |
1770 | (struct bfd_link_hash_entry **) &h))) | |
1771 | return false; | |
1772 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
1773 | h->type = STT_OBJECT; | |
1774 | ||
1775 | if (info->shared | |
1776 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
1777 | return false; | |
1778 | ||
1779 | s = bfd_make_section (abfd, ".rela.plt"); | |
1780 | if (s == NULL | |
1781 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1782 | | SEC_HAS_CONTENTS | |
1783 | | SEC_IN_MEMORY | |
1784 | | SEC_LINKER_CREATED | |
1785 | | SEC_READONLY)) | |
1786 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
1787 | return false; | |
1788 | ||
1789 | /* We may or may not have created a .got section for this object, but | |
1790 | we definitely havn't done the rest of the work. */ | |
1791 | ||
1792 | if (!elf64_alpha_create_got_section (abfd, info)) | |
1793 | return false; | |
1794 | ||
1795 | s = bfd_make_section(abfd, ".rela.got"); | |
1796 | if (s == NULL | |
1797 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
1798 | | SEC_HAS_CONTENTS | |
1799 | | SEC_IN_MEMORY | |
1800 | | SEC_LINKER_CREATED | |
1801 | | SEC_READONLY)) | |
1802 | || !bfd_set_section_alignment (abfd, s, 3)) | |
1803 | return false; | |
1804 | ||
1805 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the | |
1806 | dynobj's .got section. We don't do this in the linker script | |
1807 | because we don't want to define the symbol if we are not creating | |
1808 | a global offset table. */ | |
1809 | h = NULL; | |
1810 | if (!(_bfd_generic_link_add_one_symbol | |
1811 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
1812 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
1813 | false, get_elf_backend_data (abfd)->collect, | |
1814 | (struct bfd_link_hash_entry **) &h))) | |
1815 | return false; | |
1816 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
1817 | h->type = STT_OBJECT; | |
1818 | ||
1819 | if (info->shared | |
1820 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
1821 | return false; | |
1822 | ||
1823 | elf_hash_table (info)->hgot = h; | |
1824 | ||
1825 | return true; | |
1826 | } | |
1827 | \f | |
1828 | /* Read ECOFF debugging information from a .mdebug section into a | |
1829 | ecoff_debug_info structure. */ | |
1830 | ||
1831 | static boolean | |
1832 | elf64_alpha_read_ecoff_info (abfd, section, debug) | |
1833 | bfd *abfd; | |
1834 | asection *section; | |
1835 | struct ecoff_debug_info *debug; | |
1836 | { | |
1837 | HDRR *symhdr; | |
1838 | const struct ecoff_debug_swap *swap; | |
1839 | char *ext_hdr = NULL; | |
1840 | ||
1841 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
fe8bc63d | 1842 | memset (debug, 0, sizeof (*debug)); |
252b5132 RH |
1843 | |
1844 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); | |
1845 | if (ext_hdr == NULL && swap->external_hdr_size != 0) | |
1846 | goto error_return; | |
1847 | ||
1848 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
1849 | swap->external_hdr_size) | |
1850 | == false) | |
1851 | goto error_return; | |
1852 | ||
1853 | symhdr = &debug->symbolic_header; | |
1854 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
1855 | ||
1856 | /* The symbolic header contains absolute file offsets and sizes to | |
1857 | read. */ | |
1858 | #define READ(ptr, offset, count, size, type) \ | |
1859 | if (symhdr->count == 0) \ | |
1860 | debug->ptr = NULL; \ | |
1861 | else \ | |
1862 | { \ | |
1863 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ | |
1864 | if (debug->ptr == NULL) \ | |
1865 | goto error_return; \ | |
1866 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
1867 | || (bfd_read (debug->ptr, size, symhdr->count, \ | |
1868 | abfd) != size * symhdr->count)) \ | |
1869 | goto error_return; \ | |
1870 | } | |
1871 | ||
1872 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
1873 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
1874 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
1875 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
1876 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
1877 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
1878 | union aux_ext *); | |
1879 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
1880 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
1881 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
1882 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
1883 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
1884 | #undef READ | |
1885 | ||
1886 | debug->fdr = NULL; | |
1887 | debug->adjust = NULL; | |
1888 | ||
1889 | return true; | |
1890 | ||
1891 | error_return: | |
1892 | if (ext_hdr != NULL) | |
1893 | free (ext_hdr); | |
1894 | if (debug->line != NULL) | |
1895 | free (debug->line); | |
1896 | if (debug->external_dnr != NULL) | |
1897 | free (debug->external_dnr); | |
1898 | if (debug->external_pdr != NULL) | |
1899 | free (debug->external_pdr); | |
1900 | if (debug->external_sym != NULL) | |
1901 | free (debug->external_sym); | |
1902 | if (debug->external_opt != NULL) | |
1903 | free (debug->external_opt); | |
1904 | if (debug->external_aux != NULL) | |
1905 | free (debug->external_aux); | |
1906 | if (debug->ss != NULL) | |
1907 | free (debug->ss); | |
1908 | if (debug->ssext != NULL) | |
1909 | free (debug->ssext); | |
1910 | if (debug->external_fdr != NULL) | |
1911 | free (debug->external_fdr); | |
1912 | if (debug->external_rfd != NULL) | |
1913 | free (debug->external_rfd); | |
1914 | if (debug->external_ext != NULL) | |
1915 | free (debug->external_ext); | |
1916 | return false; | |
1917 | } | |
1918 | ||
1919 | /* Alpha ELF local labels start with '$'. */ | |
1920 | ||
1921 | static boolean | |
1922 | elf64_alpha_is_local_label_name (abfd, name) | |
56fc028e | 1923 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1924 | const char *name; |
1925 | { | |
1926 | return name[0] == '$'; | |
1927 | } | |
1928 | ||
1929 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line | |
1930 | routine in order to handle the ECOFF debugging information. We | |
1931 | still call this mips_elf_find_line because of the slot | |
1932 | find_line_info in elf_obj_tdata is declared that way. */ | |
1933 | ||
1934 | struct mips_elf_find_line | |
1935 | { | |
1936 | struct ecoff_debug_info d; | |
1937 | struct ecoff_find_line i; | |
1938 | }; | |
1939 | ||
1940 | static boolean | |
1941 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
1942 | functionname_ptr, line_ptr) | |
1943 | bfd *abfd; | |
1944 | asection *section; | |
1945 | asymbol **symbols; | |
1946 | bfd_vma offset; | |
1947 | const char **filename_ptr; | |
1948 | const char **functionname_ptr; | |
1949 | unsigned int *line_ptr; | |
1950 | { | |
1951 | asection *msec; | |
1952 | ||
95404643 RH |
1953 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
1954 | filename_ptr, functionname_ptr, | |
1955 | line_ptr, 0, | |
1956 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
1957 | return true; | |
1958 | ||
252b5132 RH |
1959 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
1960 | if (msec != NULL) | |
1961 | { | |
1962 | flagword origflags; | |
1963 | struct mips_elf_find_line *fi; | |
1964 | const struct ecoff_debug_swap * const swap = | |
1965 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
1966 | ||
1967 | /* If we are called during a link, alpha_elf_final_link may have | |
1968 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
1969 | if appropriate (which it normally will be). */ | |
1970 | origflags = msec->flags; | |
1971 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
1972 | msec->flags |= SEC_HAS_CONTENTS; | |
1973 | ||
1974 | fi = elf_tdata (abfd)->find_line_info; | |
1975 | if (fi == NULL) | |
1976 | { | |
1977 | bfd_size_type external_fdr_size; | |
1978 | char *fraw_src; | |
1979 | char *fraw_end; | |
1980 | struct fdr *fdr_ptr; | |
1981 | ||
1982 | fi = ((struct mips_elf_find_line *) | |
1983 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); | |
1984 | if (fi == NULL) | |
1985 | { | |
1986 | msec->flags = origflags; | |
1987 | return false; | |
1988 | } | |
1989 | ||
1990 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) | |
1991 | { | |
1992 | msec->flags = origflags; | |
1993 | return false; | |
1994 | } | |
1995 | ||
1996 | /* Swap in the FDR information. */ | |
1997 | fi->d.fdr = ((struct fdr *) | |
1998 | bfd_alloc (abfd, | |
1999 | (fi->d.symbolic_header.ifdMax * | |
2000 | sizeof (struct fdr)))); | |
2001 | if (fi->d.fdr == NULL) | |
2002 | { | |
2003 | msec->flags = origflags; | |
2004 | return false; | |
2005 | } | |
2006 | external_fdr_size = swap->external_fdr_size; | |
2007 | fdr_ptr = fi->d.fdr; | |
2008 | fraw_src = (char *) fi->d.external_fdr; | |
2009 | fraw_end = (fraw_src | |
2010 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
2011 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2012 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
2013 | ||
2014 | elf_tdata (abfd)->find_line_info = fi; | |
2015 | ||
2016 | /* Note that we don't bother to ever free this information. | |
2017 | find_nearest_line is either called all the time, as in | |
2018 | objdump -l, so the information should be saved, or it is | |
2019 | rarely called, as in ld error messages, so the memory | |
2020 | wasted is unimportant. Still, it would probably be a | |
2021 | good idea for free_cached_info to throw it away. */ | |
2022 | } | |
2023 | ||
2024 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
2025 | &fi->i, filename_ptr, functionname_ptr, | |
2026 | line_ptr)) | |
2027 | { | |
2028 | msec->flags = origflags; | |
2029 | return true; | |
2030 | } | |
2031 | ||
2032 | msec->flags = origflags; | |
2033 | } | |
2034 | ||
2035 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
2036 | ||
2037 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
2038 | filename_ptr, functionname_ptr, | |
2039 | line_ptr); | |
2040 | } | |
2041 | \f | |
2042 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
2043 | ||
2044 | struct extsym_info | |
2045 | { | |
2046 | bfd *abfd; | |
2047 | struct bfd_link_info *info; | |
2048 | struct ecoff_debug_info *debug; | |
2049 | const struct ecoff_debug_swap *swap; | |
2050 | boolean failed; | |
2051 | }; | |
2052 | ||
2053 | static boolean | |
2054 | elf64_alpha_output_extsym (h, data) | |
2055 | struct alpha_elf_link_hash_entry *h; | |
2056 | PTR data; | |
2057 | { | |
2058 | struct extsym_info *einfo = (struct extsym_info *) data; | |
2059 | boolean strip; | |
2060 | asection *sec, *output_section; | |
2061 | ||
2062 | if (h->root.indx == -2) | |
2063 | strip = false; | |
2064 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2065 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) | |
2066 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
2067 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
2068 | strip = true; | |
2069 | else if (einfo->info->strip == strip_all | |
2070 | || (einfo->info->strip == strip_some | |
2071 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2072 | h->root.root.root.string, | |
2073 | false, false) == NULL)) | |
2074 | strip = true; | |
2075 | else | |
2076 | strip = false; | |
2077 | ||
2078 | if (strip) | |
2079 | return true; | |
2080 | ||
2081 | if (h->esym.ifd == -2) | |
2082 | { | |
2083 | h->esym.jmptbl = 0; | |
2084 | h->esym.cobol_main = 0; | |
2085 | h->esym.weakext = 0; | |
2086 | h->esym.reserved = 0; | |
2087 | h->esym.ifd = ifdNil; | |
2088 | h->esym.asym.value = 0; | |
2089 | h->esym.asym.st = stGlobal; | |
2090 | ||
2091 | if (h->root.root.type != bfd_link_hash_defined | |
2092 | && h->root.root.type != bfd_link_hash_defweak) | |
2093 | h->esym.asym.sc = scAbs; | |
2094 | else | |
2095 | { | |
2096 | const char *name; | |
2097 | ||
2098 | sec = h->root.root.u.def.section; | |
2099 | output_section = sec->output_section; | |
2100 | ||
2101 | /* When making a shared library and symbol h is the one from | |
2102 | the another shared library, OUTPUT_SECTION may be null. */ | |
2103 | if (output_section == NULL) | |
2104 | h->esym.asym.sc = scUndefined; | |
2105 | else | |
2106 | { | |
2107 | name = bfd_section_name (output_section->owner, output_section); | |
2108 | ||
2109 | if (strcmp (name, ".text") == 0) | |
2110 | h->esym.asym.sc = scText; | |
2111 | else if (strcmp (name, ".data") == 0) | |
2112 | h->esym.asym.sc = scData; | |
2113 | else if (strcmp (name, ".sdata") == 0) | |
2114 | h->esym.asym.sc = scSData; | |
2115 | else if (strcmp (name, ".rodata") == 0 | |
2116 | || strcmp (name, ".rdata") == 0) | |
2117 | h->esym.asym.sc = scRData; | |
2118 | else if (strcmp (name, ".bss") == 0) | |
2119 | h->esym.asym.sc = scBss; | |
2120 | else if (strcmp (name, ".sbss") == 0) | |
2121 | h->esym.asym.sc = scSBss; | |
2122 | else if (strcmp (name, ".init") == 0) | |
2123 | h->esym.asym.sc = scInit; | |
2124 | else if (strcmp (name, ".fini") == 0) | |
2125 | h->esym.asym.sc = scFini; | |
2126 | else | |
2127 | h->esym.asym.sc = scAbs; | |
2128 | } | |
2129 | } | |
2130 | ||
2131 | h->esym.asym.reserved = 0; | |
2132 | h->esym.asym.index = indexNil; | |
2133 | } | |
2134 | ||
2135 | if (h->root.root.type == bfd_link_hash_common) | |
2136 | h->esym.asym.value = h->root.root.u.c.size; | |
2137 | else if (h->root.root.type == bfd_link_hash_defined | |
2138 | || h->root.root.type == bfd_link_hash_defweak) | |
2139 | { | |
2140 | if (h->esym.asym.sc == scCommon) | |
2141 | h->esym.asym.sc = scBss; | |
2142 | else if (h->esym.asym.sc == scSCommon) | |
2143 | h->esym.asym.sc = scSBss; | |
2144 | ||
2145 | sec = h->root.root.u.def.section; | |
2146 | output_section = sec->output_section; | |
2147 | if (output_section != NULL) | |
2148 | h->esym.asym.value = (h->root.root.u.def.value | |
2149 | + sec->output_offset | |
2150 | + output_section->vma); | |
2151 | else | |
2152 | h->esym.asym.value = 0; | |
2153 | } | |
2154 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
2155 | { | |
2156 | /* Set type and value for a symbol with a function stub. */ | |
2157 | h->esym.asym.st = stProc; | |
2158 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); | |
2159 | if (sec == NULL) | |
2160 | h->esym.asym.value = 0; | |
2161 | else | |
2162 | { | |
2163 | output_section = sec->output_section; | |
2164 | if (output_section != NULL) | |
2165 | h->esym.asym.value = (h->root.plt.offset | |
2166 | + sec->output_offset | |
2167 | + output_section->vma); | |
2168 | else | |
2169 | h->esym.asym.value = 0; | |
2170 | } | |
252b5132 RH |
2171 | } |
2172 | ||
2173 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
2174 | h->root.root.root.string, | |
2175 | &h->esym)) | |
2176 | { | |
2177 | einfo->failed = true; | |
2178 | return false; | |
2179 | } | |
2180 | ||
2181 | return true; | |
2182 | } | |
2183 | ||
2184 | /* FIXME: Create a runtime procedure table from the .mdebug section. | |
2185 | ||
2186 | static boolean | |
2187 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) | |
2188 | PTR handle; | |
2189 | bfd *abfd; | |
2190 | struct bfd_link_info *info; | |
2191 | asection *s; | |
2192 | struct ecoff_debug_info *debug; | |
2193 | */ | |
2194 | \f | |
2195 | /* Handle dynamic relocations when doing an Alpha ELF link. */ | |
2196 | ||
2197 | static boolean | |
2198 | elf64_alpha_check_relocs (abfd, info, sec, relocs) | |
2199 | bfd *abfd; | |
2200 | struct bfd_link_info *info; | |
2201 | asection *sec; | |
2202 | const Elf_Internal_Rela *relocs; | |
2203 | { | |
2204 | bfd *dynobj; | |
2205 | asection *sreloc; | |
2206 | const char *rel_sec_name; | |
2207 | Elf_Internal_Shdr *symtab_hdr; | |
2208 | struct alpha_elf_link_hash_entry **sym_hashes; | |
2209 | struct alpha_elf_got_entry **local_got_entries; | |
2210 | const Elf_Internal_Rela *rel, *relend; | |
2211 | int got_created; | |
2212 | ||
2213 | if (info->relocateable) | |
2214 | return true; | |
2215 | ||
2216 | dynobj = elf_hash_table(info)->dynobj; | |
2217 | if (dynobj == NULL) | |
2218 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
2219 | ||
2220 | sreloc = NULL; | |
2221 | rel_sec_name = NULL; | |
2222 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
2223 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
2224 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2225 | got_created = 0; | |
2226 | ||
2227 | relend = relocs + sec->reloc_count; | |
2228 | for (rel = relocs; rel < relend; ++rel) | |
2229 | { | |
2230 | unsigned long r_symndx, r_type; | |
2231 | struct alpha_elf_link_hash_entry *h; | |
2232 | ||
2233 | r_symndx = ELF64_R_SYM (rel->r_info); | |
2234 | if (r_symndx < symtab_hdr->sh_info) | |
2235 | h = NULL; | |
2236 | else | |
2237 | { | |
2238 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2239 | ||
2240 | while (h->root.root.type == bfd_link_hash_indirect | |
2241 | || h->root.root.type == bfd_link_hash_warning) | |
2242 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2243 | ||
2244 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; | |
2245 | } | |
2246 | r_type = ELF64_R_TYPE (rel->r_info); | |
2247 | ||
2248 | switch (r_type) | |
2249 | { | |
2250 | case R_ALPHA_LITERAL: | |
2251 | { | |
2252 | struct alpha_elf_got_entry *gotent; | |
2253 | int flags = 0; | |
2254 | ||
2255 | if (h) | |
2256 | { | |
2257 | /* Search for and possibly create a got entry. */ | |
2258 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
2259 | if (gotent->gotobj == abfd && | |
2260 | gotent->addend == rel->r_addend) | |
2261 | break; | |
2262 | ||
2263 | if (!gotent) | |
2264 | { | |
2265 | gotent = ((struct alpha_elf_got_entry *) | |
2266 | bfd_alloc (abfd, | |
2267 | sizeof (struct alpha_elf_got_entry))); | |
2268 | if (!gotent) | |
2269 | return false; | |
2270 | ||
2271 | gotent->gotobj = abfd; | |
2272 | gotent->addend = rel->r_addend; | |
2273 | gotent->got_offset = -1; | |
2274 | gotent->flags = 0; | |
2275 | gotent->use_count = 1; | |
2276 | ||
2277 | gotent->next = h->got_entries; | |
2278 | h->got_entries = gotent; | |
2279 | ||
2280 | alpha_elf_tdata (abfd)->total_got_entries++; | |
2281 | } | |
2282 | else | |
2283 | gotent->use_count += 1; | |
2284 | } | |
2285 | else | |
2286 | { | |
2287 | /* This is a local .got entry -- record for merge. */ | |
2288 | if (!local_got_entries) | |
2289 | { | |
2290 | size_t size; | |
2291 | size = (symtab_hdr->sh_info | |
2292 | * sizeof (struct alpha_elf_got_entry *)); | |
2293 | ||
2294 | local_got_entries = ((struct alpha_elf_got_entry **) | |
2295 | bfd_alloc (abfd, size)); | |
2296 | if (!local_got_entries) | |
2297 | return false; | |
2298 | ||
2299 | memset (local_got_entries, 0, size); | |
2300 | alpha_elf_tdata (abfd)->local_got_entries = | |
2301 | local_got_entries; | |
2302 | } | |
2303 | ||
2304 | for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)]; | |
2305 | gotent != NULL && gotent->addend != rel->r_addend; | |
2306 | gotent = gotent->next) | |
2307 | continue; | |
2308 | if (!gotent) | |
2309 | { | |
2310 | gotent = ((struct alpha_elf_got_entry *) | |
2311 | bfd_alloc (abfd, | |
2312 | sizeof (struct alpha_elf_got_entry))); | |
2313 | if (!gotent) | |
2314 | return false; | |
2315 | ||
2316 | gotent->gotobj = abfd; | |
2317 | gotent->addend = rel->r_addend; | |
2318 | gotent->got_offset = -1; | |
2319 | gotent->flags = 0; | |
2320 | gotent->use_count = 1; | |
2321 | ||
2322 | gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)]; | |
2323 | local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent; | |
2324 | ||
2325 | alpha_elf_tdata(abfd)->total_got_entries++; | |
2326 | alpha_elf_tdata(abfd)->n_local_got_entries++; | |
2327 | } | |
2328 | else | |
2329 | gotent->use_count += 1; | |
2330 | } | |
2331 | ||
2332 | /* Remember how this literal is used from its LITUSEs. | |
2333 | This will be important when it comes to decide if we can | |
2334 | create a .plt entry for a function symbol. */ | |
2335 | if (rel+1 < relend | |
2336 | && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE) | |
2337 | { | |
2338 | do | |
2339 | { | |
2340 | ++rel; | |
2341 | if (rel->r_addend >= 1 && rel->r_addend <= 3) | |
2342 | flags |= 1 << rel->r_addend; | |
2343 | } | |
2344 | while (rel+1 < relend && | |
2345 | ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE); | |
2346 | } | |
2347 | else | |
2348 | { | |
2349 | /* No LITUSEs -- presumably the address is not being | |
2350 | loaded for nothing. */ | |
2351 | flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
2352 | } | |
2353 | ||
2354 | gotent->flags |= flags; | |
2355 | if (h) | |
2356 | { | |
2357 | /* Make a guess as to whether a .plt entry will be needed. */ | |
2358 | if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC) | |
2359 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2360 | else | |
2361 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2362 | } | |
2363 | } | |
2364 | /* FALLTHRU */ | |
2365 | ||
2366 | case R_ALPHA_GPDISP: | |
dfe57ca0 | 2367 | case R_ALPHA_GPREL16: |
252b5132 RH |
2368 | case R_ALPHA_GPREL32: |
2369 | case R_ALPHA_GPRELHIGH: | |
2370 | case R_ALPHA_GPRELLOW: | |
2371 | /* We don't actually use the .got here, but the sections must | |
2372 | be created before the linker maps input sections to output | |
2373 | sections. */ | |
2374 | if (!got_created) | |
2375 | { | |
2376 | if (!elf64_alpha_create_got_section (abfd, info)) | |
2377 | return false; | |
2378 | ||
2379 | /* Make sure the object's gotobj is set to itself so | |
2380 | that we default to every object with its own .got. | |
2381 | We'll merge .gots later once we've collected each | |
2382 | object's info. */ | |
2383 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
2384 | ||
2385 | got_created = 1; | |
2386 | } | |
2387 | break; | |
2388 | ||
2389 | case R_ALPHA_SREL16: | |
2390 | case R_ALPHA_SREL32: | |
2391 | case R_ALPHA_SREL64: | |
2392 | if (h == NULL) | |
2393 | break; | |
2394 | /* FALLTHRU */ | |
2395 | ||
2396 | case R_ALPHA_REFLONG: | |
2397 | case R_ALPHA_REFQUAD: | |
2398 | if (rel_sec_name == NULL) | |
2399 | { | |
2400 | rel_sec_name = (bfd_elf_string_from_elf_section | |
2401 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
2402 | elf_section_data(sec)->rel_hdr.sh_name)); | |
2403 | if (rel_sec_name == NULL) | |
2404 | return false; | |
2405 | ||
2406 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
2407 | && strcmp (bfd_get_section_name (abfd, sec), | |
2408 | rel_sec_name+5) == 0); | |
2409 | } | |
2410 | ||
2411 | /* We need to create the section here now whether we eventually | |
2412 | use it or not so that it gets mapped to an output section by | |
2413 | the linker. If not used, we'll kill it in | |
2414 | size_dynamic_sections. */ | |
2415 | if (sreloc == NULL) | |
2416 | { | |
2417 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); | |
2418 | if (sreloc == NULL) | |
2419 | { | |
2420 | sreloc = bfd_make_section (dynobj, rel_sec_name); | |
2421 | if (sreloc == NULL | |
2422 | || !bfd_set_section_flags (dynobj, sreloc, | |
067a7d17 | 2423 | (((sec->flags |
824e2cb4 L |
2424 | & SEC_ALLOC) |
2425 | ? (SEC_ALLOC | |
2426 | | SEC_LOAD) : 0) | |
252b5132 RH |
2427 | | SEC_HAS_CONTENTS |
2428 | | SEC_IN_MEMORY | |
2429 | | SEC_LINKER_CREATED | |
2430 | | SEC_READONLY)) | |
2431 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) | |
2432 | return false; | |
2433 | } | |
2434 | } | |
2435 | ||
2436 | if (h) | |
2437 | { | |
2438 | /* Since we havn't seen all of the input symbols yet, we | |
2439 | don't know whether we'll actually need a dynamic relocation | |
2440 | entry for this reloc. So make a record of it. Once we | |
2441 | find out if this thing needs dynamic relocation we'll | |
fe8bc63d | 2442 | expand the relocation sections by the appropriate amount. */ |
252b5132 RH |
2443 | |
2444 | struct alpha_elf_reloc_entry *rent; | |
2445 | ||
2446 | for (rent = h->reloc_entries; rent; rent = rent->next) | |
2447 | if (rent->rtype == r_type && rent->srel == sreloc) | |
2448 | break; | |
2449 | ||
2450 | if (!rent) | |
2451 | { | |
2452 | rent = ((struct alpha_elf_reloc_entry *) | |
2453 | bfd_alloc (abfd, | |
2454 | sizeof (struct alpha_elf_reloc_entry))); | |
2455 | if (!rent) | |
2456 | return false; | |
2457 | ||
2458 | rent->srel = sreloc; | |
2459 | rent->rtype = r_type; | |
2460 | rent->count = 1; | |
fcfbdf31 | 2461 | rent->reltext = (sec->flags & SEC_READONLY) != 0; |
252b5132 RH |
2462 | |
2463 | rent->next = h->reloc_entries; | |
2464 | h->reloc_entries = rent; | |
2465 | } | |
2466 | else | |
2467 | rent->count++; | |
2468 | } | |
c555c5c5 | 2469 | else if (info->shared && (sec->flags & SEC_ALLOC)) |
252b5132 | 2470 | { |
c555c5c5 AM |
2471 | /* If this is a shared library, and the section is to be |
2472 | loaded into memory, we need a RELATIVE reloc. */ | |
252b5132 | 2473 | sreloc->_raw_size += sizeof (Elf64_External_Rela); |
fcfbdf31 JJ |
2474 | if (sec->flags & SEC_READONLY) |
2475 | info->flags |= DF_TEXTREL; | |
252b5132 RH |
2476 | } |
2477 | break; | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | return true; | |
2482 | } | |
2483 | ||
2484 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2485 | regular object. The current definition is in some section of the | |
2486 | dynamic object, but we're not including those sections. We have to | |
2487 | change the definition to something the rest of the link can | |
2488 | understand. */ | |
2489 | ||
2490 | static boolean | |
2491 | elf64_alpha_adjust_dynamic_symbol (info, h) | |
2492 | struct bfd_link_info *info; | |
2493 | struct elf_link_hash_entry *h; | |
2494 | { | |
2495 | bfd *dynobj; | |
2496 | asection *s; | |
2497 | struct alpha_elf_link_hash_entry *ah; | |
2498 | ||
2499 | dynobj = elf_hash_table(info)->dynobj; | |
2500 | ah = (struct alpha_elf_link_hash_entry *)h; | |
2501 | ||
2502 | /* Now that we've seen all of the input symbols, finalize our decision | |
2503 | about whether this symbol should get a .plt entry. */ | |
2504 | ||
2505 | if (h->root.type != bfd_link_hash_undefweak | |
2506 | && alpha_elf_dynamic_symbol_p (h, info) | |
2507 | && ((h->type == STT_FUNC | |
2508 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
2509 | || (h->type == STT_NOTYPE | |
2510 | && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
2511 | /* Don't prevent otherwise valid programs from linking by attempting | |
2512 | to create a new .got entry somewhere. A Correct Solution would be | |
2513 | to add a new .got section to a new object file and let it be merged | |
2514 | somewhere later. But for now don't bother. */ | |
2515 | && ah->got_entries) | |
2516 | { | |
2517 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2518 | ||
2519 | s = bfd_get_section_by_name(dynobj, ".plt"); | |
2520 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
2521 | return false; | |
2522 | ||
2523 | /* The first bit of the .plt is reserved. */ | |
2524 | if (s->_raw_size == 0) | |
2525 | s->_raw_size = PLT_HEADER_SIZE; | |
2526 | ||
2527 | h->plt.offset = s->_raw_size; | |
2528 | s->_raw_size += PLT_ENTRY_SIZE; | |
2529 | ||
2530 | /* If this symbol is not defined in a regular file, and we are not | |
2531 | generating a shared library, then set the symbol to the location | |
2532 | in the .plt. This is required to make function pointers compare | |
2533 | equal between the normal executable and the shared library. */ | |
2534 | if (! info->shared | |
2535 | && h->root.type != bfd_link_hash_defweak) | |
2536 | { | |
2537 | h->root.u.def.section = s; | |
2538 | h->root.u.def.value = h->plt.offset; | |
2539 | } | |
2540 | ||
2541 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ | |
2542 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2543 | BFD_ASSERT (s != NULL); | |
2544 | s->_raw_size += sizeof (Elf64_External_Rela); | |
2545 | ||
2546 | return true; | |
2547 | } | |
2548 | else | |
2549 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
2550 | ||
2551 | /* If this is a weak symbol, and there is a real definition, the | |
2552 | processor independent code will have arranged for us to see the | |
2553 | real definition first, and we can just use the same value. */ | |
2554 | if (h->weakdef != NULL) | |
2555 | { | |
2556 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
2557 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
2558 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
2559 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
2560 | return true; | |
2561 | } | |
2562 | ||
2563 | /* This is a reference to a symbol defined by a dynamic object which | |
2564 | is not a function. The Alpha, since it uses .got entries for all | |
2565 | symbols even in regular objects, does not need the hackery of a | |
2566 | .dynbss section and COPY dynamic relocations. */ | |
2567 | ||
2568 | return true; | |
2569 | } | |
2570 | ||
2571 | /* Symbol versioning can create new symbols, and make our old symbols | |
2572 | indirect to the new ones. Consolidate the got and reloc information | |
2573 | in these situations. */ | |
2574 | ||
2575 | static boolean | |
2576 | elf64_alpha_merge_ind_symbols (hi, dummy) | |
2577 | struct alpha_elf_link_hash_entry *hi; | |
56fc028e | 2578 | PTR dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
2579 | { |
2580 | struct alpha_elf_link_hash_entry *hs; | |
2581 | ||
2582 | if (hi->root.root.type != bfd_link_hash_indirect) | |
2583 | return true; | |
2584 | hs = hi; | |
2585 | do { | |
2586 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
2587 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
2588 | ||
2589 | /* Merge the flags. Whee. */ | |
2590 | ||
2591 | hs->flags |= hi->flags; | |
2592 | ||
2593 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
2594 | doing so, since we don't need it anymore. */ | |
2595 | ||
2596 | if (hs->got_entries == NULL) | |
2597 | hs->got_entries = hi->got_entries; | |
2598 | else | |
2599 | { | |
2600 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
2601 | ||
2602 | gsh = hs->got_entries; | |
2603 | for (gi = hi->got_entries; gi ; gi = gin) | |
2604 | { | |
2605 | gin = gi->next; | |
2606 | for (gs = gsh; gs ; gs = gs->next) | |
2607 | if (gi->gotobj == gs->gotobj && gi->addend == gs->addend) | |
2608 | goto got_found; | |
2609 | gi->next = hs->got_entries; | |
2610 | hs->got_entries = gi; | |
2611 | got_found:; | |
2612 | } | |
2613 | } | |
2614 | hi->got_entries = NULL; | |
2615 | ||
2616 | /* And similar for the reloc entries. */ | |
2617 | ||
2618 | if (hs->reloc_entries == NULL) | |
2619 | hs->reloc_entries = hi->reloc_entries; | |
2620 | else | |
2621 | { | |
2622 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
2623 | ||
2624 | rsh = hs->reloc_entries; | |
2625 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
2626 | { | |
2627 | rin = ri->next; | |
2628 | for (rs = rsh; rs ; rs = rs->next) | |
2629 | if (ri->rtype == rs->rtype) | |
2630 | { | |
2631 | rs->count += ri->count; | |
2632 | goto found_reloc; | |
2633 | } | |
2634 | ri->next = hs->reloc_entries; | |
2635 | hs->reloc_entries = ri; | |
2636 | found_reloc:; | |
2637 | } | |
2638 | } | |
2639 | hi->reloc_entries = NULL; | |
2640 | ||
2641 | return true; | |
2642 | } | |
2643 | ||
2644 | /* Is it possible to merge two object file's .got tables? */ | |
2645 | ||
2646 | static boolean | |
2647 | elf64_alpha_can_merge_gots (a, b) | |
2648 | bfd *a, *b; | |
2649 | { | |
2650 | int total = alpha_elf_tdata (a)->total_got_entries; | |
2651 | bfd *bsub; | |
2652 | ||
2653 | /* Trivial quick fallout test. */ | |
2654 | if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES) | |
2655 | return true; | |
2656 | ||
2657 | /* By their nature, local .got entries cannot be merged. */ | |
2658 | if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES) | |
2659 | return false; | |
2660 | ||
2661 | /* Failing the common trivial comparison, we must effectively | |
2662 | perform the merge. Not actually performing the merge means that | |
2663 | we don't have to store undo information in case we fail. */ | |
2664 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2665 | { | |
2666 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
2667 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2668 | int i, n; | |
2669 | ||
d9bc7a44 | 2670 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
2671 | for (i = 0; i < n; ++i) |
2672 | { | |
2673 | struct alpha_elf_got_entry *ae, *be; | |
2674 | struct alpha_elf_link_hash_entry *h; | |
2675 | ||
2676 | h = hashes[i]; | |
2677 | while (h->root.root.type == bfd_link_hash_indirect | |
2678 | || h->root.root.type == bfd_link_hash_warning) | |
2679 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2680 | ||
2681 | for (be = h->got_entries; be ; be = be->next) | |
2682 | { | |
2683 | if (be->use_count == 0) | |
2684 | continue; | |
2685 | if (be->gotobj != b) | |
2686 | continue; | |
2687 | ||
2688 | for (ae = h->got_entries; ae ; ae = ae->next) | |
2689 | if (ae->gotobj == a && ae->addend == be->addend) | |
2690 | goto global_found; | |
2691 | ||
2692 | if (++total > MAX_GOT_ENTRIES) | |
2693 | return false; | |
2694 | global_found:; | |
2695 | } | |
2696 | } | |
2697 | } | |
2698 | ||
2699 | return true; | |
2700 | } | |
2701 | ||
2702 | /* Actually merge two .got tables. */ | |
2703 | ||
2704 | static void | |
2705 | elf64_alpha_merge_gots (a, b) | |
2706 | bfd *a, *b; | |
2707 | { | |
2708 | int total = alpha_elf_tdata (a)->total_got_entries; | |
2709 | bfd *bsub; | |
2710 | ||
2711 | /* Remember local expansion. */ | |
2712 | { | |
2713 | int e = alpha_elf_tdata (b)->n_local_got_entries; | |
2714 | total += e; | |
2715 | alpha_elf_tdata (a)->n_local_got_entries += e; | |
2716 | } | |
2717 | ||
2718 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
2719 | { | |
2720 | struct alpha_elf_got_entry **local_got_entries; | |
2721 | struct alpha_elf_link_hash_entry **hashes; | |
2722 | Elf_Internal_Shdr *symtab_hdr; | |
2723 | int i, n; | |
2724 | ||
2725 | /* Let the local .got entries know they are part of a new subsegment. */ | |
2726 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
2727 | if (local_got_entries) | |
2728 | { | |
2729 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
2730 | for (i = 0; i < n; ++i) | |
2731 | { | |
2732 | struct alpha_elf_got_entry *ent; | |
2733 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
2734 | ent->gotobj = a; | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | /* Merge the global .got entries. */ | |
2739 | hashes = alpha_elf_sym_hashes (bsub); | |
2740 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
2741 | ||
d9bc7a44 | 2742 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
2743 | for (i = 0; i < n; ++i) |
2744 | { | |
2745 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
2746 | struct alpha_elf_link_hash_entry *h; | |
2747 | ||
2748 | h = hashes[i]; | |
2749 | while (h->root.root.type == bfd_link_hash_indirect | |
2750 | || h->root.root.type == bfd_link_hash_warning) | |
2751 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2752 | ||
2753 | start = &h->got_entries; | |
2754 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) | |
2755 | { | |
2756 | if (be->use_count == 0) | |
2757 | { | |
2758 | *pbe = be->next; | |
2759 | continue; | |
2760 | } | |
2761 | if (be->gotobj != b) | |
2762 | continue; | |
2763 | ||
2764 | for (ae = *start; ae ; ae = ae->next) | |
2765 | if (ae->gotobj == a && ae->addend == be->addend) | |
2766 | { | |
2767 | ae->flags |= be->flags; | |
2768 | ae->use_count += be->use_count; | |
2769 | *pbe = be->next; | |
2770 | goto global_found; | |
2771 | } | |
2772 | be->gotobj = a; | |
2773 | total += 1; | |
2774 | ||
2775 | global_found:; | |
2776 | } | |
2777 | } | |
2778 | ||
2779 | alpha_elf_tdata (bsub)->gotobj = a; | |
2780 | } | |
2781 | alpha_elf_tdata (a)->total_got_entries = total; | |
2782 | ||
2783 | /* Merge the two in_got chains. */ | |
2784 | { | |
2785 | bfd *next; | |
2786 | ||
2787 | bsub = a; | |
2788 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
2789 | bsub = next; | |
2790 | ||
2791 | alpha_elf_tdata (bsub)->in_got_link_next = b; | |
2792 | } | |
2793 | } | |
2794 | ||
2795 | /* Calculate the offsets for the got entries. */ | |
2796 | ||
2797 | static boolean | |
2798 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) | |
2799 | struct alpha_elf_link_hash_entry *h; | |
52b9d213 | 2800 | PTR arg ATTRIBUTE_UNUSED; |
252b5132 RH |
2801 | { |
2802 | struct alpha_elf_got_entry *gotent; | |
2803 | ||
2804 | for (gotent = h->got_entries; gotent; gotent = gotent->next) | |
2805 | if (gotent->use_count > 0) | |
2806 | { | |
2807 | bfd_size_type *plge | |
2808 | = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; | |
2809 | ||
2810 | gotent->got_offset = *plge; | |
2811 | *plge += 8; | |
2812 | } | |
2813 | ||
2814 | return true; | |
2815 | } | |
2816 | ||
2817 | static void | |
2818 | elf64_alpha_calc_got_offsets (info) | |
2819 | struct bfd_link_info *info; | |
2820 | { | |
2821 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
2822 | ||
2823 | /* First, zero out the .got sizes, as we may be recalculating the | |
2824 | .got after optimizing it. */ | |
2825 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2826 | alpha_elf_tdata(i)->got->_raw_size = 0; | |
2827 | ||
2828 | /* Next, fill in the offsets for all the global entries. */ | |
2829 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2830 | elf64_alpha_calc_got_offsets_for_symbol, | |
2831 | NULL); | |
2832 | ||
2833 | /* Finally, fill in the offsets for the local entries. */ | |
2834 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2835 | { | |
2836 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; | |
2837 | bfd *j; | |
2838 | ||
2839 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
2840 | { | |
2841 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
2842 | int k, n; | |
2843 | ||
2844 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
2845 | if (!local_got_entries) | |
2846 | continue; | |
2847 | ||
2848 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
2849 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
2850 | if (gotent->use_count > 0) | |
2851 | { | |
2852 | gotent->got_offset = got_offset; | |
2853 | got_offset += 8; | |
2854 | } | |
2855 | } | |
2856 | ||
2857 | alpha_elf_tdata(i)->got->_raw_size = got_offset; | |
2858 | alpha_elf_tdata(i)->got->_cooked_size = got_offset; | |
2859 | } | |
2860 | } | |
2861 | ||
2862 | /* Constructs the gots. */ | |
2863 | ||
2864 | static boolean | |
2865 | elf64_alpha_size_got_sections (output_bfd, info) | |
52b9d213 | 2866 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2867 | struct bfd_link_info *info; |
2868 | { | |
52b9d213 | 2869 | bfd *i, *got_list, *cur_got_obj = NULL; |
252b5132 RH |
2870 | int something_changed = 0; |
2871 | ||
2872 | got_list = alpha_elf_hash_table (info)->got_list; | |
2873 | ||
2874 | /* On the first time through, pretend we have an existing got list | |
2875 | consisting of all of the input files. */ | |
2876 | if (got_list == NULL) | |
2877 | { | |
2878 | for (i = info->input_bfds; i ; i = i->link_next) | |
2879 | { | |
2880 | bfd *this_got = alpha_elf_tdata (i)->gotobj; | |
2881 | if (this_got == NULL) | |
2882 | continue; | |
2883 | ||
2884 | /* We are assuming no merging has yet ocurred. */ | |
2885 | BFD_ASSERT (this_got == i); | |
2886 | ||
2887 | if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES) | |
2888 | { | |
2889 | /* Yikes! A single object file has too many entries. */ | |
2890 | (*_bfd_error_handler) | |
2891 | (_("%s: .got subsegment exceeds 64K (size %d)"), | |
2892 | bfd_get_filename (i), | |
2893 | alpha_elf_tdata (this_got)->total_got_entries * 8); | |
2894 | return false; | |
2895 | } | |
2896 | ||
2897 | if (got_list == NULL) | |
2898 | got_list = this_got; | |
2899 | else | |
2900 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
2901 | cur_got_obj = this_got; | |
2902 | } | |
2903 | ||
2904 | /* Strange degenerate case of no got references. */ | |
2905 | if (got_list == NULL) | |
2906 | return true; | |
2907 | ||
2908 | alpha_elf_hash_table (info)->got_list = got_list; | |
2909 | ||
2910 | /* Force got offsets to be recalculated. */ | |
2911 | something_changed = 1; | |
2912 | } | |
2913 | ||
2914 | cur_got_obj = got_list; | |
2915 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
2916 | while (i != NULL) | |
2917 | { | |
2918 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
2919 | { | |
2920 | elf64_alpha_merge_gots (cur_got_obj, i); | |
2921 | i = alpha_elf_tdata(i)->got_link_next; | |
2922 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
2923 | something_changed = 1; | |
2924 | } | |
2925 | else | |
2926 | { | |
2927 | cur_got_obj = i; | |
2928 | i = alpha_elf_tdata(i)->got_link_next; | |
2929 | } | |
2930 | } | |
2931 | ||
2932 | /* Once the gots have been merged, fill in the got offsets for | |
2933 | everything therein. */ | |
2934 | if (1 || something_changed) | |
2935 | elf64_alpha_calc_got_offsets (info); | |
2936 | ||
2937 | return true; | |
2938 | } | |
2939 | ||
2940 | static boolean | |
2941 | elf64_alpha_always_size_sections (output_bfd, info) | |
2942 | bfd *output_bfd; | |
2943 | struct bfd_link_info *info; | |
2944 | { | |
2945 | bfd *i; | |
2946 | ||
2947 | if (info->relocateable) | |
2948 | return true; | |
2949 | ||
2950 | /* First, take care of the indirect symbols created by versioning. */ | |
2951 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
2952 | elf64_alpha_merge_ind_symbols, | |
2953 | NULL); | |
2954 | ||
2955 | if (!elf64_alpha_size_got_sections (output_bfd, info)) | |
2956 | return false; | |
2957 | ||
2958 | /* Allocate space for all of the .got subsections. */ | |
2959 | i = alpha_elf_hash_table (info)->got_list; | |
2960 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
2961 | { | |
2962 | asection *s = alpha_elf_tdata(i)->got; | |
2963 | if (s->_raw_size > 0) | |
2964 | { | |
2965 | s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); | |
2966 | if (s->contents == NULL) | |
2967 | return false; | |
2968 | } | |
2969 | } | |
2970 | ||
2971 | return true; | |
2972 | } | |
2973 | ||
2974 | /* Work out the sizes of the dynamic relocation entries. */ | |
2975 | ||
2976 | static boolean | |
2977 | elf64_alpha_calc_dynrel_sizes (h, info) | |
2978 | struct alpha_elf_link_hash_entry *h; | |
2979 | struct bfd_link_info *info; | |
2980 | { | |
2981 | /* If the symbol was defined as a common symbol in a regular object | |
2982 | file, and there was no definition in any dynamic object, then the | |
2983 | linker will have allocated space for the symbol in a common | |
2984 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
2985 | set. This is done for dynamic symbols in | |
2986 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
2987 | symbols, somehow. */ | |
2988 | if (((h->root.elf_link_hash_flags | |
2989 | & (ELF_LINK_HASH_DEF_REGULAR | |
2990 | | ELF_LINK_HASH_REF_REGULAR | |
2991 | | ELF_LINK_HASH_DEF_DYNAMIC)) | |
2992 | == ELF_LINK_HASH_REF_REGULAR) | |
2993 | && (h->root.root.type == bfd_link_hash_defined | |
2994 | || h->root.root.type == bfd_link_hash_defweak) | |
2995 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
2996 | { | |
2997 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
2998 | } | |
2999 | ||
3000 | /* If the symbol is dynamic, we'll need all the relocations in their | |
3001 | natural form. If this is a shared object, and it has been forced | |
3002 | local, we'll need the same number of RELATIVE relocations. */ | |
3003 | ||
3004 | if (alpha_elf_dynamic_symbol_p (&h->root, info) || info->shared) | |
3005 | { | |
3006 | struct alpha_elf_reloc_entry *relent; | |
3007 | bfd *dynobj; | |
3008 | struct alpha_elf_got_entry *gotent; | |
3009 | bfd_size_type count; | |
3010 | asection *srel; | |
3011 | ||
3012 | for (relent = h->reloc_entries; relent; relent = relent->next) | |
3013 | if (relent->rtype == R_ALPHA_REFLONG | |
3014 | || relent->rtype == R_ALPHA_REFQUAD) | |
3015 | { | |
3016 | relent->srel->_raw_size += | |
fe8bc63d | 3017 | sizeof (Elf64_External_Rela) * relent->count; |
fcfbdf31 JJ |
3018 | if (relent->reltext) |
3019 | info->flags |= DT_TEXTREL; | |
252b5132 RH |
3020 | } |
3021 | ||
3022 | dynobj = elf_hash_table(info)->dynobj; | |
3023 | count = 0; | |
3024 | ||
3025 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
3026 | count++; | |
3027 | ||
3028 | /* If we are using a .plt entry, subtract one, as the first | |
3029 | reference uses a .rela.plt entry instead. */ | |
3030 | if (h->root.plt.offset != MINUS_ONE) | |
3031 | count--; | |
3032 | ||
3033 | if (count > 0) | |
3034 | { | |
3035 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3036 | BFD_ASSERT (srel != NULL); | |
3037 | srel->_raw_size += sizeof (Elf64_External_Rela) * count; | |
3038 | } | |
3039 | } | |
3040 | ||
3041 | return true; | |
3042 | } | |
3043 | ||
3044 | /* Set the sizes of the dynamic sections. */ | |
3045 | ||
3046 | static boolean | |
3047 | elf64_alpha_size_dynamic_sections (output_bfd, info) | |
24a35864 | 3048 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3049 | struct bfd_link_info *info; |
3050 | { | |
3051 | bfd *dynobj; | |
3052 | asection *s; | |
252b5132 RH |
3053 | boolean relplt; |
3054 | ||
3055 | dynobj = elf_hash_table(info)->dynobj; | |
3056 | BFD_ASSERT(dynobj != NULL); | |
3057 | ||
3058 | if (elf_hash_table (info)->dynamic_sections_created) | |
3059 | { | |
3060 | /* Set the contents of the .interp section to the interpreter. */ | |
3061 | if (!info->shared) | |
3062 | { | |
3063 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3064 | BFD_ASSERT (s != NULL); | |
3065 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3066 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3067 | } | |
3068 | ||
3069 | /* Now that we've seen all of the input files, we can decide which | |
3070 | symbols need dynamic relocation entries and which don't. We've | |
3071 | collected information in check_relocs that we can now apply to | |
3072 | size the dynamic relocation sections. */ | |
3073 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3074 | elf64_alpha_calc_dynrel_sizes, | |
3075 | info); | |
3076 | ||
3077 | /* When building shared libraries, each local .got entry needs a | |
3078 | RELATIVE reloc. */ | |
3079 | if (info->shared) | |
3080 | { | |
3081 | bfd *i; | |
3082 | asection *srel; | |
3083 | bfd_size_type count; | |
3084 | ||
3085 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3086 | BFD_ASSERT (srel != NULL); | |
3087 | ||
3088 | for (i = alpha_elf_hash_table(info)->got_list, count = 0; | |
3089 | i != NULL; | |
3090 | i = alpha_elf_tdata(i)->got_link_next) | |
3091 | count += alpha_elf_tdata(i)->n_local_got_entries; | |
3092 | ||
fe8bc63d | 3093 | srel->_raw_size += count * sizeof (Elf64_External_Rela); |
252b5132 RH |
3094 | } |
3095 | } | |
3096 | /* else we're not dynamic and by definition we don't need such things. */ | |
3097 | ||
3098 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3099 | determined the sizes of the various dynamic sections. Allocate | |
3100 | memory for them. */ | |
252b5132 RH |
3101 | relplt = false; |
3102 | for (s = dynobj->sections; s != NULL; s = s->next) | |
3103 | { | |
3104 | const char *name; | |
3105 | boolean strip; | |
3106 | ||
3107 | if (!(s->flags & SEC_LINKER_CREATED)) | |
3108 | continue; | |
3109 | ||
3110 | /* It's OK to base decisions on the section name, because none | |
3111 | of the dynobj section names depend upon the input files. */ | |
3112 | name = bfd_get_section_name (dynobj, s); | |
3113 | ||
3114 | /* If we don't need this section, strip it from the output file. | |
3115 | This is to handle .rela.bss and .rela.plt. We must create it | |
3116 | in create_dynamic_sections, because it must be created before | |
3117 | the linker maps input sections to output sections. The | |
3118 | linker does that before adjust_dynamic_symbol is called, and | |
3119 | it is that function which decides whether anything needs to | |
3120 | go into these sections. */ | |
3121 | ||
3122 | strip = false; | |
3123 | ||
3124 | if (strncmp (name, ".rela", 5) == 0) | |
3125 | { | |
3126 | strip = (s->_raw_size == 0); | |
3127 | ||
3128 | if (!strip) | |
3129 | { | |
252b5132 RH |
3130 | if (strcmp(name, ".rela.plt") == 0) |
3131 | relplt = true; | |
3132 | ||
3133 | /* We use the reloc_count field as a counter if we need | |
3134 | to copy relocs into the output file. */ | |
3135 | s->reloc_count = 0; | |
3136 | } | |
3137 | } | |
3138 | else if (strcmp (name, ".plt") != 0) | |
3139 | { | |
3140 | /* It's not one of our dynamic sections, so don't allocate space. */ | |
3141 | continue; | |
3142 | } | |
3143 | ||
3144 | if (strip) | |
7f8d5fc9 | 3145 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
3146 | else |
3147 | { | |
3148 | /* Allocate memory for the section contents. */ | |
3149 | s->contents = (bfd_byte *) bfd_zalloc(dynobj, s->_raw_size); | |
3150 | if (s->contents == NULL && s->_raw_size != 0) | |
3151 | return false; | |
3152 | } | |
3153 | } | |
3154 | ||
252b5132 RH |
3155 | if (elf_hash_table (info)->dynamic_sections_created) |
3156 | { | |
3157 | /* Add some entries to the .dynamic section. We fill in the | |
3158 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
3159 | must add the entries now so that we get the correct size for | |
3160 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3161 | dynamic linker and used by the debugger. */ | |
3162 | if (!info->shared) | |
3163 | { | |
3164 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) | |
3165 | return false; | |
3166 | } | |
3167 | ||
3168 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
3169 | return false; | |
3170 | ||
3171 | if (relplt) | |
3172 | { | |
3173 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
3174 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
3175 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) | |
3176 | return false; | |
3177 | } | |
3178 | ||
3179 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) | |
3180 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) | |
3181 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, | |
fe8bc63d | 3182 | sizeof (Elf64_External_Rela))) |
252b5132 RH |
3183 | return false; |
3184 | ||
fcfbdf31 | 3185 | if (info->flags & DF_TEXTREL) |
252b5132 RH |
3186 | { |
3187 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
3188 | return false; | |
3189 | } | |
3190 | } | |
3191 | ||
3192 | return true; | |
3193 | } | |
3194 | ||
252b5132 RH |
3195 | /* Relocate an Alpha ELF section. */ |
3196 | ||
3197 | static boolean | |
3198 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, | |
3199 | contents, relocs, local_syms, local_sections) | |
3200 | bfd *output_bfd; | |
3201 | struct bfd_link_info *info; | |
3202 | bfd *input_bfd; | |
3203 | asection *input_section; | |
3204 | bfd_byte *contents; | |
3205 | Elf_Internal_Rela *relocs; | |
3206 | Elf_Internal_Sym *local_syms; | |
3207 | asection **local_sections; | |
3208 | { | |
3209 | Elf_Internal_Shdr *symtab_hdr; | |
3210 | Elf_Internal_Rela *rel; | |
3211 | Elf_Internal_Rela *relend; | |
3212 | asection *sec, *sgot, *srel, *srelgot; | |
3213 | bfd *dynobj, *gotobj; | |
3214 | bfd_vma gp; | |
f16fbd61 | 3215 | boolean ret_val = true; |
252b5132 RH |
3216 | |
3217 | srelgot = srel = NULL; | |
3218 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3219 | dynobj = elf_hash_table (info)->dynobj; | |
3220 | if (dynobj) | |
3221 | { | |
3222 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3223 | } | |
3224 | ||
3225 | /* Find the gp value for this input bfd. */ | |
3226 | sgot = NULL; | |
3227 | gp = 0; | |
3228 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
3229 | if (gotobj) | |
3230 | { | |
3231 | sgot = alpha_elf_tdata (gotobj)->got; | |
3232 | gp = _bfd_get_gp_value (gotobj); | |
3233 | if (gp == 0) | |
3234 | { | |
3235 | gp = (sgot->output_section->vma | |
3236 | + sgot->output_offset | |
3237 | + 0x8000); | |
3238 | _bfd_set_gp_value (gotobj, gp); | |
3239 | } | |
3240 | } | |
3241 | ||
3242 | rel = relocs; | |
3243 | relend = relocs + input_section->reloc_count; | |
3244 | for (; rel < relend; rel++) | |
3245 | { | |
3246 | int r_type; | |
3247 | reloc_howto_type *howto; | |
3248 | unsigned long r_symndx; | |
3249 | struct alpha_elf_link_hash_entry *h; | |
3250 | Elf_Internal_Sym *sym; | |
3251 | bfd_vma relocation; | |
52b9d213 | 3252 | bfd_signed_vma addend; |
252b5132 RH |
3253 | bfd_reloc_status_type r; |
3254 | ||
3255 | r_type = ELF64_R_TYPE(rel->r_info); | |
3256 | if (r_type < 0 || r_type >= (int) R_ALPHA_max) | |
3257 | { | |
3258 | bfd_set_error (bfd_error_bad_value); | |
3259 | return false; | |
3260 | } | |
3261 | howto = elf64_alpha_howto_table + r_type; | |
3262 | ||
3263 | r_symndx = ELF64_R_SYM(rel->r_info); | |
3264 | ||
3265 | if (info->relocateable) | |
3266 | { | |
3267 | /* This is a relocateable link. We don't have to change | |
3268 | anything, unless the reloc is against a section symbol, | |
3269 | in which case we have to adjust according to where the | |
3270 | section symbol winds up in the output section. */ | |
72b60c23 | 3271 | |
fe8bc63d | 3272 | /* The symbol associated with GPDISP and LITUSE is |
72b60c23 RH |
3273 | immaterial. Only the addend is significant. */ |
3274 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
3275 | continue; | |
3276 | ||
252b5132 RH |
3277 | if (r_symndx < symtab_hdr->sh_info) |
3278 | { | |
3279 | sym = local_syms + r_symndx; | |
3280 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
3281 | { | |
3282 | sec = local_sections[r_symndx]; | |
3283 | rel->r_addend += sec->output_offset + sym->st_value; | |
3284 | } | |
3285 | } | |
3286 | ||
3287 | continue; | |
3288 | } | |
3289 | ||
3290 | /* This is a final link. */ | |
3291 | ||
3292 | h = NULL; | |
3293 | sym = NULL; | |
3294 | sec = NULL; | |
3295 | ||
3296 | if (r_symndx < symtab_hdr->sh_info) | |
3297 | { | |
3298 | sym = local_syms + r_symndx; | |
3299 | sec = local_sections[r_symndx]; | |
3300 | relocation = (sec->output_section->vma | |
3301 | + sec->output_offset | |
3302 | + sym->st_value); | |
3303 | } | |
3304 | else | |
3305 | { | |
3306 | h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; | |
3307 | ||
3308 | while (h->root.root.type == bfd_link_hash_indirect | |
3309 | || h->root.root.type == bfd_link_hash_warning) | |
3310 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3311 | ||
3312 | if (h->root.root.type == bfd_link_hash_defined | |
3313 | || h->root.root.type == bfd_link_hash_defweak) | |
3314 | { | |
3315 | sec = h->root.root.u.def.section; | |
3316 | ||
252b5132 RH |
3317 | if (sec->output_section == NULL) |
3318 | relocation = 0; | |
252b5132 RH |
3319 | else |
3320 | { | |
3321 | relocation = (h->root.root.u.def.value | |
3322 | + sec->output_section->vma | |
3323 | + sec->output_offset); | |
3324 | } | |
3325 | } | |
3326 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
3327 | relocation = 0; | |
3a27a730 L |
3328 | else if (info->shared && !info->symbolic |
3329 | && !info->no_undefined | |
edb72b3b | 3330 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
252b5132 RH |
3331 | relocation = 0; |
3332 | else | |
3333 | { | |
3334 | if (!((*info->callbacks->undefined_symbol) | |
3335 | (info, h->root.root.root.string, input_bfd, | |
5cc7c785 | 3336 | input_section, rel->r_offset, |
3a27a730 | 3337 | (!info->shared || info->no_undefined |
edb72b3b | 3338 | || ELF_ST_VISIBILITY (h->root.other))))) |
f16fbd61 | 3339 | ret_val = false; |
252b5132 RH |
3340 | relocation = 0; |
3341 | } | |
3342 | } | |
3343 | addend = rel->r_addend; | |
3344 | ||
3345 | switch (r_type) | |
3346 | { | |
3347 | case R_ALPHA_GPDISP: | |
3348 | { | |
3349 | bfd_byte *p_ldah, *p_lda; | |
3350 | ||
3351 | BFD_ASSERT(gp != 0); | |
3352 | ||
3353 | relocation = (input_section->output_section->vma | |
3354 | + input_section->output_offset | |
3355 | + rel->r_offset); | |
3356 | ||
3357 | p_ldah = contents + rel->r_offset - input_section->vma; | |
3358 | p_lda = p_ldah + rel->r_addend; | |
3359 | ||
3360 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation, | |
3361 | p_ldah, p_lda); | |
3362 | } | |
3363 | break; | |
3364 | ||
252b5132 RH |
3365 | case R_ALPHA_LITERAL: |
3366 | { | |
3367 | struct alpha_elf_got_entry *gotent; | |
3368 | boolean dynamic_symbol; | |
3369 | ||
3370 | BFD_ASSERT(sgot != NULL); | |
3371 | BFD_ASSERT(gp != 0); | |
3372 | ||
3373 | if (h != NULL) | |
3374 | { | |
3375 | gotent = h->got_entries; | |
3376 | dynamic_symbol = alpha_elf_dynamic_symbol_p (&h->root, info); | |
3377 | } | |
3378 | else | |
3379 | { | |
3380 | gotent = (alpha_elf_tdata(input_bfd)-> | |
3381 | local_got_entries[r_symndx]); | |
3382 | dynamic_symbol = false; | |
3383 | } | |
3384 | ||
3385 | BFD_ASSERT(gotent != NULL); | |
3386 | ||
3387 | while (gotent->gotobj != gotobj || gotent->addend != addend) | |
3388 | gotent = gotent->next; | |
3389 | ||
3390 | BFD_ASSERT(gotent->use_count >= 1); | |
3391 | ||
3392 | /* Initialize the .got entry's value. */ | |
3393 | if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) | |
3394 | { | |
3395 | bfd_put_64 (output_bfd, relocation+addend, | |
3396 | sgot->contents + gotent->got_offset); | |
3397 | ||
3398 | /* If the symbol has been forced local, output a | |
3399 | RELATIVE reloc, otherwise it will be handled in | |
3400 | finish_dynamic_symbol. */ | |
3401 | if (info->shared && !dynamic_symbol) | |
3402 | { | |
3403 | Elf_Internal_Rela outrel; | |
3404 | ||
3405 | BFD_ASSERT(srelgot != NULL); | |
3406 | ||
3407 | outrel.r_offset = (sgot->output_section->vma | |
3408 | + sgot->output_offset | |
3409 | + gotent->got_offset); | |
3410 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
28cfee26 | 3411 | outrel.r_addend = relocation+addend; |
252b5132 RH |
3412 | |
3413 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3414 | ((Elf64_External_Rela *) | |
3415 | srelgot->contents) | |
3416 | + srelgot->reloc_count++); | |
fe8bc63d | 3417 | BFD_ASSERT (sizeof (Elf64_External_Rela) |
252b5132 RH |
3418 | * srelgot->reloc_count |
3419 | <= srelgot->_cooked_size); | |
3420 | } | |
3421 | ||
3422 | gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; | |
3423 | } | |
3424 | ||
3425 | /* Figure the gprel relocation. */ | |
3426 | addend = 0; | |
3427 | relocation = (sgot->output_section->vma | |
3428 | + sgot->output_offset | |
3429 | + gotent->got_offset); | |
3430 | relocation -= gp; | |
3431 | } | |
3432 | /* overflow handled by _bfd_final_link_relocate */ | |
3433 | goto default_reloc; | |
3434 | ||
dfe57ca0 | 3435 | case R_ALPHA_GPREL16: |
252b5132 RH |
3436 | case R_ALPHA_GPREL32: |
3437 | case R_ALPHA_GPRELLOW: | |
f16fbd61 RH |
3438 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) |
3439 | { | |
3440 | (*_bfd_error_handler) | |
3441 | (_("%s: gp-relative relocation against dynamic symbol %s"), | |
3442 | bfd_get_filename (input_bfd), h->root.root.root.string); | |
3443 | ret_val = false; | |
3444 | } | |
252b5132 RH |
3445 | BFD_ASSERT(gp != 0); |
3446 | relocation -= gp; | |
3447 | goto default_reloc; | |
3448 | ||
3449 | case R_ALPHA_GPRELHIGH: | |
f16fbd61 RH |
3450 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) |
3451 | { | |
3452 | (*_bfd_error_handler) | |
3453 | (_("%s: gp-relative relocation against dynamic symbol %s"), | |
3454 | bfd_get_filename (input_bfd), h->root.root.root.string); | |
3455 | ret_val = false; | |
3456 | } | |
252b5132 RH |
3457 | BFD_ASSERT(gp != 0); |
3458 | relocation -= gp; | |
3459 | relocation += addend; | |
3460 | addend = 0; | |
3461 | relocation = (((bfd_signed_vma) relocation >> 16) | |
3462 | + ((relocation >> 15) & 1)); | |
3463 | goto default_reloc; | |
3464 | ||
252b5132 | 3465 | case R_ALPHA_HINT: |
f94952df RH |
3466 | /* A call to a dynamic symbol is definitely out of range of |
3467 | the 16-bit displacement. Don't bother writing anything. */ | |
3468 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) | |
3469 | { | |
3470 | r = bfd_reloc_ok; | |
3471 | break; | |
3472 | } | |
3473 | /* FALLTHRU */ | |
3474 | ||
3475 | case R_ALPHA_BRADDR: | |
252b5132 RH |
3476 | /* The regular PC-relative stuff measures from the start of |
3477 | the instruction rather than the end. */ | |
3478 | addend -= 4; | |
3479 | goto default_reloc; | |
3480 | ||
3481 | case R_ALPHA_REFLONG: | |
3482 | case R_ALPHA_REFQUAD: | |
3483 | { | |
3484 | Elf_Internal_Rela outrel; | |
3485 | boolean skip; | |
3486 | ||
3487 | /* Careful here to remember RELATIVE relocations for global | |
3488 | variables for symbolic shared objects. */ | |
3489 | ||
3490 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) | |
3491 | { | |
3492 | BFD_ASSERT(h->root.dynindx != -1); | |
3493 | outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type); | |
3494 | outrel.r_addend = addend; | |
3495 | addend = 0, relocation = 0; | |
3496 | } | |
c555c5c5 | 3497 | else if (info->shared && (input_section->flags & SEC_ALLOC)) |
252b5132 RH |
3498 | { |
3499 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
28cfee26 | 3500 | outrel.r_addend = relocation + addend; |
252b5132 RH |
3501 | } |
3502 | else | |
3503 | goto default_reloc; | |
3504 | ||
3505 | if (!srel) | |
3506 | { | |
3507 | const char *name; | |
3508 | ||
3509 | name = (bfd_elf_string_from_elf_section | |
3510 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
3511 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
3512 | BFD_ASSERT(name != NULL); | |
3513 | ||
3514 | srel = bfd_get_section_by_name (dynobj, name); | |
3515 | BFD_ASSERT(srel != NULL); | |
3516 | } | |
3517 | ||
3518 | skip = false; | |
3519 | ||
3520 | if (elf_section_data (input_section)->stab_info == NULL) | |
3521 | outrel.r_offset = rel->r_offset; | |
3522 | else | |
3523 | { | |
3524 | bfd_vma off; | |
3525 | ||
3526 | off = (_bfd_stab_section_offset | |
3527 | (output_bfd, &elf_hash_table (info)->stab_info, | |
3528 | input_section, | |
3529 | &elf_section_data (input_section)->stab_info, | |
3530 | rel->r_offset)); | |
3531 | if (off == (bfd_vma) -1) | |
3532 | skip = true; | |
3533 | outrel.r_offset = off; | |
3534 | } | |
3535 | ||
3536 | if (! skip) | |
3537 | outrel.r_offset += (input_section->output_section->vma | |
3538 | + input_section->output_offset); | |
3539 | else | |
3540 | memset (&outrel, 0, sizeof outrel); | |
3541 | ||
3542 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3543 | ((Elf64_External_Rela *) | |
3544 | srel->contents) | |
3545 | + srel->reloc_count++); | |
fe8bc63d | 3546 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count |
252b5132 RH |
3547 | <= srel->_cooked_size); |
3548 | } | |
3549 | goto default_reloc; | |
3550 | ||
3551 | default: | |
3552 | default_reloc: | |
3553 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3554 | contents, rel->r_offset, relocation, | |
3555 | addend); | |
3556 | break; | |
3557 | } | |
3558 | ||
3559 | switch (r) | |
3560 | { | |
3561 | case bfd_reloc_ok: | |
3562 | break; | |
3563 | ||
3564 | case bfd_reloc_overflow: | |
3565 | { | |
3566 | const char *name; | |
3567 | ||
3568 | if (h != NULL) | |
3569 | name = h->root.root.root.string; | |
3570 | else | |
3571 | { | |
3572 | name = (bfd_elf_string_from_elf_section | |
3573 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3574 | if (name == NULL) | |
3575 | return false; | |
3576 | if (*name == '\0') | |
3577 | name = bfd_section_name (input_bfd, sec); | |
3578 | } | |
3579 | if (! ((*info->callbacks->reloc_overflow) | |
3580 | (info, name, howto->name, (bfd_vma) 0, | |
3581 | input_bfd, input_section, rel->r_offset))) | |
f16fbd61 | 3582 | ret_val = false; |
252b5132 RH |
3583 | } |
3584 | break; | |
3585 | ||
3586 | default: | |
3587 | case bfd_reloc_outofrange: | |
3588 | abort (); | |
3589 | } | |
3590 | } | |
3591 | ||
f16fbd61 | 3592 | return ret_val; |
252b5132 RH |
3593 | } |
3594 | ||
3595 | /* Finish up dynamic symbol handling. We set the contents of various | |
3596 | dynamic sections here. */ | |
3597 | ||
3598 | static boolean | |
3599 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) | |
3600 | bfd *output_bfd; | |
3601 | struct bfd_link_info *info; | |
3602 | struct elf_link_hash_entry *h; | |
3603 | Elf_Internal_Sym *sym; | |
3604 | { | |
3605 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
3606 | ||
3607 | if (h->plt.offset != MINUS_ONE) | |
3608 | { | |
3609 | /* Fill in the .plt entry for this symbol. */ | |
3610 | asection *splt, *sgot, *srel; | |
3611 | Elf_Internal_Rela outrel; | |
3612 | bfd_vma got_addr, plt_addr; | |
3613 | bfd_vma plt_index; | |
3614 | struct alpha_elf_got_entry *gotent; | |
3615 | ||
3616 | BFD_ASSERT (h->dynindx != -1); | |
3617 | ||
3618 | /* The first .got entry will be updated by the .plt with the | |
3619 | address of the target function. */ | |
3620 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
3621 | BFD_ASSERT (gotent && gotent->addend == 0); | |
3622 | ||
3623 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3624 | BFD_ASSERT (splt != NULL); | |
3625 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3626 | BFD_ASSERT (srel != NULL); | |
3627 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3628 | BFD_ASSERT (sgot != NULL); | |
3629 | ||
3630 | got_addr = (sgot->output_section->vma | |
3631 | + sgot->output_offset | |
3632 | + gotent->got_offset); | |
3633 | plt_addr = (splt->output_section->vma | |
3634 | + splt->output_offset | |
3635 | + h->plt.offset); | |
3636 | ||
3637 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
3638 | ||
3639 | /* Fill in the entry in the procedure linkage table. */ | |
3640 | { | |
3641 | unsigned insn1, insn2, insn3; | |
3642 | ||
3643 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); | |
3644 | insn2 = PLT_ENTRY_WORD2; | |
3645 | insn3 = PLT_ENTRY_WORD3; | |
3646 | ||
3647 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); | |
3648 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); | |
3649 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); | |
3650 | } | |
3651 | ||
3652 | /* Fill in the entry in the .rela.plt section. */ | |
3653 | outrel.r_offset = got_addr; | |
3654 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
3655 | outrel.r_addend = 0; | |
3656 | ||
3657 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3658 | ((Elf64_External_Rela *)srel->contents | |
3659 | + plt_index)); | |
3660 | ||
3661 | if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
3662 | { | |
3663 | /* Mark the symbol as undefined, rather than as defined in the | |
3664 | .plt section. Leave the value alone. */ | |
3665 | sym->st_shndx = SHN_UNDEF; | |
3666 | } | |
3667 | ||
3668 | /* Fill in the entries in the .got. */ | |
3669 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
3670 | ||
3671 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
3672 | if (gotent->next) | |
3673 | { | |
3674 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3675 | BFD_ASSERT (! info->shared || srel != NULL); | |
3676 | ||
3677 | gotent = gotent->next; | |
3678 | do | |
3679 | { | |
3680 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
3681 | BFD_ASSERT(sgot != NULL); | |
3682 | BFD_ASSERT(gotent->addend == 0); | |
3683 | ||
3684 | bfd_put_64 (output_bfd, plt_addr, | |
3685 | sgot->contents + gotent->got_offset); | |
3686 | ||
3687 | if (info->shared) | |
3688 | { | |
3689 | outrel.r_offset = (sgot->output_section->vma | |
3690 | + sgot->output_offset | |
3691 | + gotent->got_offset); | |
3692 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
28cfee26 | 3693 | outrel.r_addend = plt_addr; |
252b5132 RH |
3694 | |
3695 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3696 | ((Elf64_External_Rela *) | |
3697 | srel->contents) | |
3698 | + srel->reloc_count++); | |
fe8bc63d | 3699 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count |
252b5132 RH |
3700 | <= srel->_cooked_size); |
3701 | } | |
3702 | ||
3703 | gotent = gotent->next; | |
3704 | } | |
3705 | while (gotent != NULL); | |
3706 | } | |
3707 | } | |
3708 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
3709 | { | |
3710 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
3711 | asection *srel; | |
3712 | Elf_Internal_Rela outrel; | |
3713 | struct alpha_elf_got_entry *gotent; | |
3714 | ||
3715 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3716 | BFD_ASSERT (srel != NULL); | |
3717 | ||
3718 | outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT); | |
3719 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
3720 | gotent != NULL; | |
3721 | gotent = gotent->next) | |
3722 | { | |
3723 | asection *sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
3724 | outrel.r_offset = (sgot->output_section->vma | |
3725 | + sgot->output_offset | |
3726 | + gotent->got_offset); | |
3727 | outrel.r_addend = gotent->addend; | |
3728 | ||
3729 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
3730 | ((Elf64_External_Rela *)srel->contents | |
3731 | + srel->reloc_count++)); | |
fe8bc63d | 3732 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count |
252b5132 RH |
3733 | <= srel->_cooked_size); |
3734 | } | |
3735 | } | |
3736 | ||
3737 | /* Mark some specially defined symbols as absolute. */ | |
3738 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3739 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
3740 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
3741 | sym->st_shndx = SHN_ABS; | |
3742 | ||
3743 | return true; | |
3744 | } | |
3745 | ||
3746 | /* Finish up the dynamic sections. */ | |
3747 | ||
3748 | static boolean | |
3749 | elf64_alpha_finish_dynamic_sections (output_bfd, info) | |
3750 | bfd *output_bfd; | |
3751 | struct bfd_link_info *info; | |
3752 | { | |
3753 | bfd *dynobj; | |
3754 | asection *sdyn; | |
3755 | ||
3756 | dynobj = elf_hash_table (info)->dynobj; | |
3757 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
3758 | ||
3759 | if (elf_hash_table (info)->dynamic_sections_created) | |
3760 | { | |
3761 | asection *splt; | |
3762 | Elf64_External_Dyn *dyncon, *dynconend; | |
3763 | ||
3764 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
3765 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
3766 | ||
3767 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
3768 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3769 | for (; dyncon < dynconend; dyncon++) | |
3770 | { | |
3771 | Elf_Internal_Dyn dyn; | |
3772 | const char *name; | |
3773 | asection *s; | |
3774 | ||
3775 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
3776 | ||
3777 | switch (dyn.d_tag) | |
3778 | { | |
3779 | case DT_PLTGOT: | |
3780 | name = ".plt"; | |
3781 | goto get_vma; | |
3782 | case DT_PLTRELSZ: | |
3783 | name = ".rela.plt"; | |
3784 | goto get_size; | |
3785 | case DT_JMPREL: | |
3786 | name = ".rela.plt"; | |
3787 | goto get_vma; | |
3788 | ||
3789 | case DT_RELASZ: | |
3790 | /* My interpretation of the TIS v1.1 ELF document indicates | |
3791 | that RELASZ should not include JMPREL. This is not what | |
3792 | the rest of the BFD does. It is, however, what the | |
3793 | glibc ld.so wants. Do this fixup here until we found | |
3794 | out who is right. */ | |
3795 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
3796 | if (s) | |
3797 | { | |
3798 | dyn.d_un.d_val -= | |
3799 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
3800 | } | |
3801 | break; | |
3802 | ||
3803 | get_vma: | |
3804 | s = bfd_get_section_by_name (output_bfd, name); | |
3805 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
3806 | break; | |
3807 | ||
3808 | get_size: | |
3809 | s = bfd_get_section_by_name (output_bfd, name); | |
3810 | dyn.d_un.d_val = | |
3811 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
3812 | break; | |
3813 | } | |
3814 | ||
3815 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
3816 | } | |
3817 | ||
3818 | /* Initialize the PLT0 entry */ | |
3819 | if (splt->_raw_size > 0) | |
3820 | { | |
3821 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
3822 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
3823 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
3824 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
3825 | ||
3826 | /* The next two words will be filled in by ld.so */ | |
3827 | bfd_put_64 (output_bfd, 0, splt->contents + 16); | |
3828 | bfd_put_64 (output_bfd, 0, splt->contents + 24); | |
3829 | ||
3830 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
3831 | PLT_HEADER_SIZE; | |
3832 | } | |
3833 | } | |
3834 | ||
252b5132 RH |
3835 | return true; |
3836 | } | |
3837 | ||
96e2734b RH |
3838 | /* We need to use a special link routine to handle the .mdebug section. |
3839 | We need to merge all instances of these sections together, not write | |
3840 | them all out sequentially. */ | |
252b5132 RH |
3841 | |
3842 | static boolean | |
3843 | elf64_alpha_final_link (abfd, info) | |
3844 | bfd *abfd; | |
3845 | struct bfd_link_info *info; | |
3846 | { | |
3847 | asection *o; | |
3848 | struct bfd_link_order *p; | |
96e2734b | 3849 | asection *mdebug_sec; |
252b5132 RH |
3850 | struct ecoff_debug_info debug; |
3851 | const struct ecoff_debug_swap *swap | |
3852 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
3853 | HDRR *symhdr = &debug.symbolic_header; | |
3854 | PTR mdebug_handle = NULL; | |
3855 | ||
96e2734b | 3856 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 3857 | mdebug_sec = NULL; |
252b5132 RH |
3858 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
3859 | { | |
252b5132 RH |
3860 | if (strcmp (o->name, ".mdebug") == 0) |
3861 | { | |
3862 | struct extsym_info einfo; | |
3863 | ||
3864 | /* We have found the .mdebug section in the output file. | |
3865 | Look through all the link_orders comprising it and merge | |
3866 | the information together. */ | |
3867 | symhdr->magic = swap->sym_magic; | |
3868 | /* FIXME: What should the version stamp be? */ | |
3869 | symhdr->vstamp = 0; | |
3870 | symhdr->ilineMax = 0; | |
3871 | symhdr->cbLine = 0; | |
3872 | symhdr->idnMax = 0; | |
3873 | symhdr->ipdMax = 0; | |
3874 | symhdr->isymMax = 0; | |
3875 | symhdr->ioptMax = 0; | |
3876 | symhdr->iauxMax = 0; | |
3877 | symhdr->issMax = 0; | |
3878 | symhdr->issExtMax = 0; | |
3879 | symhdr->ifdMax = 0; | |
3880 | symhdr->crfd = 0; | |
3881 | symhdr->iextMax = 0; | |
3882 | ||
3883 | /* We accumulate the debugging information itself in the | |
3884 | debug_info structure. */ | |
3885 | debug.line = NULL; | |
3886 | debug.external_dnr = NULL; | |
3887 | debug.external_pdr = NULL; | |
3888 | debug.external_sym = NULL; | |
3889 | debug.external_opt = NULL; | |
3890 | debug.external_aux = NULL; | |
3891 | debug.ss = NULL; | |
3892 | debug.ssext = debug.ssext_end = NULL; | |
3893 | debug.external_fdr = NULL; | |
3894 | debug.external_rfd = NULL; | |
3895 | debug.external_ext = debug.external_ext_end = NULL; | |
3896 | ||
3897 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
3898 | if (mdebug_handle == (PTR) NULL) | |
3899 | return false; | |
3900 | ||
3901 | if (1) | |
3902 | { | |
3903 | asection *s; | |
3904 | EXTR esym; | |
52b9d213 | 3905 | bfd_vma last = 0; |
252b5132 RH |
3906 | unsigned int i; |
3907 | static const char * const name[] = | |
3908 | { | |
3909 | ".text", ".init", ".fini", ".data", | |
3910 | ".rodata", ".sdata", ".sbss", ".bss" | |
3911 | }; | |
3912 | static const int sc[] = { scText, scInit, scFini, scData, | |
3913 | scRData, scSData, scSBss, scBss }; | |
3914 | ||
3915 | esym.jmptbl = 0; | |
3916 | esym.cobol_main = 0; | |
3917 | esym.weakext = 0; | |
3918 | esym.reserved = 0; | |
3919 | esym.ifd = ifdNil; | |
3920 | esym.asym.iss = issNil; | |
3921 | esym.asym.st = stLocal; | |
3922 | esym.asym.reserved = 0; | |
3923 | esym.asym.index = indexNil; | |
3924 | for (i = 0; i < 8; i++) | |
3925 | { | |
3926 | esym.asym.sc = sc[i]; | |
3927 | s = bfd_get_section_by_name (abfd, name[i]); | |
3928 | if (s != NULL) | |
3929 | { | |
3930 | esym.asym.value = s->vma; | |
3931 | last = s->vma + s->_raw_size; | |
3932 | } | |
3933 | else | |
3934 | esym.asym.value = last; | |
3935 | ||
3936 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
3937 | name[i], &esym)) | |
3938 | return false; | |
3939 | } | |
3940 | } | |
3941 | ||
3942 | for (p = o->link_order_head; | |
3943 | p != (struct bfd_link_order *) NULL; | |
3944 | p = p->next) | |
3945 | { | |
3946 | asection *input_section; | |
3947 | bfd *input_bfd; | |
3948 | const struct ecoff_debug_swap *input_swap; | |
3949 | struct ecoff_debug_info input_debug; | |
3950 | char *eraw_src; | |
3951 | char *eraw_end; | |
3952 | ||
3953 | if (p->type != bfd_indirect_link_order) | |
3954 | { | |
3955 | if (p->type == bfd_fill_link_order) | |
3956 | continue; | |
3957 | abort (); | |
3958 | } | |
3959 | ||
3960 | input_section = p->u.indirect.section; | |
3961 | input_bfd = input_section->owner; | |
3962 | ||
3963 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
3964 | || (get_elf_backend_data (input_bfd) | |
3965 | ->elf_backend_ecoff_debug_swap) == NULL) | |
3966 | { | |
3967 | /* I don't know what a non ALPHA ELF bfd would be | |
3968 | doing with a .mdebug section, but I don't really | |
3969 | want to deal with it. */ | |
3970 | continue; | |
3971 | } | |
3972 | ||
3973 | input_swap = (get_elf_backend_data (input_bfd) | |
3974 | ->elf_backend_ecoff_debug_swap); | |
3975 | ||
3976 | BFD_ASSERT (p->size == input_section->_raw_size); | |
3977 | ||
3978 | /* The ECOFF linking code expects that we have already | |
3979 | read in the debugging information and set up an | |
3980 | ecoff_debug_info structure, so we do that now. */ | |
3981 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
3982 | &input_debug)) | |
3983 | return false; | |
3984 | ||
3985 | if (! (bfd_ecoff_debug_accumulate | |
3986 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
3987 | &input_debug, input_swap, info))) | |
3988 | return false; | |
3989 | ||
3990 | /* Loop through the external symbols. For each one with | |
3991 | interesting information, try to find the symbol in | |
3992 | the linker global hash table and save the information | |
3993 | for the output external symbols. */ | |
3994 | eraw_src = input_debug.external_ext; | |
3995 | eraw_end = (eraw_src | |
3996 | + (input_debug.symbolic_header.iextMax | |
3997 | * input_swap->external_ext_size)); | |
3998 | for (; | |
3999 | eraw_src < eraw_end; | |
4000 | eraw_src += input_swap->external_ext_size) | |
4001 | { | |
4002 | EXTR ext; | |
4003 | const char *name; | |
4004 | struct alpha_elf_link_hash_entry *h; | |
4005 | ||
4006 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
4007 | if (ext.asym.sc == scNil | |
4008 | || ext.asym.sc == scUndefined | |
4009 | || ext.asym.sc == scSUndefined) | |
4010 | continue; | |
4011 | ||
4012 | name = input_debug.ssext + ext.asym.iss; | |
4013 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
4014 | name, false, false, true); | |
4015 | if (h == NULL || h->esym.ifd != -2) | |
4016 | continue; | |
4017 | ||
4018 | if (ext.ifd != -1) | |
4019 | { | |
4020 | BFD_ASSERT (ext.ifd | |
4021 | < input_debug.symbolic_header.ifdMax); | |
4022 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
4023 | } | |
4024 | ||
4025 | h->esym = ext; | |
4026 | } | |
4027 | ||
4028 | /* Free up the information we just read. */ | |
4029 | free (input_debug.line); | |
4030 | free (input_debug.external_dnr); | |
4031 | free (input_debug.external_pdr); | |
4032 | free (input_debug.external_sym); | |
4033 | free (input_debug.external_opt); | |
4034 | free (input_debug.external_aux); | |
4035 | free (input_debug.ss); | |
4036 | free (input_debug.ssext); | |
4037 | free (input_debug.external_fdr); | |
4038 | free (input_debug.external_rfd); | |
4039 | free (input_debug.external_ext); | |
4040 | ||
4041 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4042 | elf_link_input_bfd ignores this section. */ | |
4043 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
4044 | } | |
4045 | ||
252b5132 RH |
4046 | /* Build the external symbol information. */ |
4047 | einfo.abfd = abfd; | |
4048 | einfo.info = info; | |
4049 | einfo.debug = &debug; | |
4050 | einfo.swap = swap; | |
4051 | einfo.failed = false; | |
4052 | elf_link_hash_traverse (elf_hash_table (info), | |
4053 | elf64_alpha_output_extsym, | |
4054 | (PTR) &einfo); | |
4055 | if (einfo.failed) | |
4056 | return false; | |
4057 | ||
4058 | /* Set the size of the .mdebug section. */ | |
4059 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
4060 | ||
4061 | /* Skip this section later on (I don't think this currently | |
4062 | matters, but someday it might). */ | |
4063 | o->link_order_head = (struct bfd_link_order *) NULL; | |
4064 | ||
4065 | mdebug_sec = o; | |
4066 | } | |
252b5132 RH |
4067 | } |
4068 | ||
4069 | /* Invoke the regular ELF backend linker to do all the work. */ | |
4070 | if (! bfd_elf64_bfd_final_link (abfd, info)) | |
4071 | return false; | |
4072 | ||
4073 | /* Now write out the computed sections. */ | |
4074 | ||
4075 | /* The .got subsections... */ | |
4076 | { | |
4077 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
4078 | for (i = alpha_elf_hash_table(info)->got_list; | |
4079 | i != NULL; | |
4080 | i = alpha_elf_tdata(i)->got_link_next) | |
4081 | { | |
4082 | asection *sgot; | |
4083 | ||
4084 | /* elf_bfd_final_link already did everything in dynobj. */ | |
4085 | if (i == dynobj) | |
4086 | continue; | |
4087 | ||
4088 | sgot = alpha_elf_tdata(i)->got; | |
4089 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
4090 | sgot->contents, sgot->output_offset, | |
4091 | sgot->_raw_size)) | |
4092 | return false; | |
4093 | } | |
4094 | } | |
4095 | ||
252b5132 RH |
4096 | if (mdebug_sec != (asection *) NULL) |
4097 | { | |
4098 | BFD_ASSERT (abfd->output_has_begun); | |
4099 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
4100 | swap, info, | |
4101 | mdebug_sec->filepos)) | |
4102 | return false; | |
4103 | ||
4104 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
4105 | } | |
4106 | ||
252b5132 RH |
4107 | return true; |
4108 | } | |
fcfbdf31 JJ |
4109 | |
4110 | static enum elf_reloc_type_class | |
4111 | elf64_alpha_reloc_type_class (type) | |
4112 | int type; | |
4113 | { | |
4114 | switch (type) | |
4115 | { | |
4116 | case R_ALPHA_RELATIVE: | |
4117 | return reloc_class_relative; | |
4118 | case R_ALPHA_JMP_SLOT: | |
4119 | return reloc_class_plt; | |
4120 | case R_ALPHA_COPY: | |
4121 | return reloc_class_copy; | |
4122 | default: | |
4123 | return reloc_class_normal; | |
4124 | } | |
4125 | } | |
252b5132 RH |
4126 | \f |
4127 | /* ECOFF swapping routines. These are used when dealing with the | |
4128 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 4129 | from elf32-mips.c. */ |
252b5132 RH |
4130 | static const struct ecoff_debug_swap |
4131 | elf64_alpha_ecoff_debug_swap = | |
4132 | { | |
4133 | /* Symbol table magic number. */ | |
4134 | magicSym2, | |
4135 | /* Alignment of debugging information. E.g., 4. */ | |
4136 | 8, | |
4137 | /* Sizes of external symbolic information. */ | |
4138 | sizeof (struct hdr_ext), | |
4139 | sizeof (struct dnr_ext), | |
4140 | sizeof (struct pdr_ext), | |
4141 | sizeof (struct sym_ext), | |
4142 | sizeof (struct opt_ext), | |
4143 | sizeof (struct fdr_ext), | |
4144 | sizeof (struct rfd_ext), | |
4145 | sizeof (struct ext_ext), | |
4146 | /* Functions to swap in external symbolic data. */ | |
4147 | ecoff_swap_hdr_in, | |
4148 | ecoff_swap_dnr_in, | |
4149 | ecoff_swap_pdr_in, | |
4150 | ecoff_swap_sym_in, | |
4151 | ecoff_swap_opt_in, | |
4152 | ecoff_swap_fdr_in, | |
4153 | ecoff_swap_rfd_in, | |
4154 | ecoff_swap_ext_in, | |
4155 | _bfd_ecoff_swap_tir_in, | |
4156 | _bfd_ecoff_swap_rndx_in, | |
4157 | /* Functions to swap out external symbolic data. */ | |
4158 | ecoff_swap_hdr_out, | |
4159 | ecoff_swap_dnr_out, | |
4160 | ecoff_swap_pdr_out, | |
4161 | ecoff_swap_sym_out, | |
4162 | ecoff_swap_opt_out, | |
4163 | ecoff_swap_fdr_out, | |
4164 | ecoff_swap_rfd_out, | |
4165 | ecoff_swap_ext_out, | |
4166 | _bfd_ecoff_swap_tir_out, | |
4167 | _bfd_ecoff_swap_rndx_out, | |
4168 | /* Function to read in symbolic data. */ | |
4169 | elf64_alpha_read_ecoff_info | |
4170 | }; | |
4171 | \f | |
70bcb145 JW |
4172 | /* Use a non-standard hash bucket size of 8. */ |
4173 | ||
4174 | const struct elf_size_info alpha_elf_size_info = | |
4175 | { | |
4176 | sizeof (Elf64_External_Ehdr), | |
4177 | sizeof (Elf64_External_Phdr), | |
4178 | sizeof (Elf64_External_Shdr), | |
4179 | sizeof (Elf64_External_Rel), | |
4180 | sizeof (Elf64_External_Rela), | |
4181 | sizeof (Elf64_External_Sym), | |
4182 | sizeof (Elf64_External_Dyn), | |
4183 | sizeof (Elf_External_Note), | |
4184 | 8, | |
4185 | 1, | |
4186 | 64, 8, | |
4187 | ELFCLASS64, EV_CURRENT, | |
4188 | bfd_elf64_write_out_phdrs, | |
4189 | bfd_elf64_write_shdrs_and_ehdr, | |
4190 | bfd_elf64_write_relocs, | |
4191 | bfd_elf64_swap_symbol_out, | |
4192 | bfd_elf64_slurp_reloc_table, | |
4193 | bfd_elf64_slurp_symbol_table, | |
4194 | bfd_elf64_swap_dyn_in, | |
4195 | bfd_elf64_swap_dyn_out, | |
4196 | NULL, | |
4197 | NULL, | |
4198 | NULL, | |
4199 | NULL | |
4200 | }; | |
4201 | ||
252b5132 RH |
4202 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
4203 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
4204 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
4205 | #define ELF_MACHINE_CODE EM_ALPHA |
4206 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
4207 | |
4208 | #define bfd_elf64_bfd_link_hash_table_create \ | |
4209 | elf64_alpha_bfd_link_hash_table_create | |
4210 | ||
4211 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
4212 | elf64_alpha_bfd_reloc_type_lookup | |
4213 | #define elf_info_to_howto \ | |
4214 | elf64_alpha_info_to_howto | |
4215 | ||
4216 | #define bfd_elf64_mkobject \ | |
4217 | elf64_alpha_mkobject | |
4218 | #define elf_backend_object_p \ | |
4219 | elf64_alpha_object_p | |
4220 | ||
4221 | #define elf_backend_section_from_shdr \ | |
4222 | elf64_alpha_section_from_shdr | |
4223 | #define elf_backend_fake_sections \ | |
4224 | elf64_alpha_fake_sections | |
4225 | ||
4226 | #define bfd_elf64_bfd_is_local_label_name \ | |
4227 | elf64_alpha_is_local_label_name | |
4228 | #define bfd_elf64_find_nearest_line \ | |
4229 | elf64_alpha_find_nearest_line | |
4230 | #define bfd_elf64_bfd_relax_section \ | |
4231 | elf64_alpha_relax_section | |
4232 | ||
4233 | #define elf_backend_add_symbol_hook \ | |
4234 | elf64_alpha_add_symbol_hook | |
4235 | #define elf_backend_check_relocs \ | |
4236 | elf64_alpha_check_relocs | |
4237 | #define elf_backend_create_dynamic_sections \ | |
4238 | elf64_alpha_create_dynamic_sections | |
4239 | #define elf_backend_adjust_dynamic_symbol \ | |
4240 | elf64_alpha_adjust_dynamic_symbol | |
4241 | #define elf_backend_always_size_sections \ | |
4242 | elf64_alpha_always_size_sections | |
4243 | #define elf_backend_size_dynamic_sections \ | |
4244 | elf64_alpha_size_dynamic_sections | |
4245 | #define elf_backend_relocate_section \ | |
4246 | elf64_alpha_relocate_section | |
4247 | #define elf_backend_finish_dynamic_symbol \ | |
4248 | elf64_alpha_finish_dynamic_symbol | |
4249 | #define elf_backend_finish_dynamic_sections \ | |
4250 | elf64_alpha_finish_dynamic_sections | |
4251 | #define bfd_elf64_bfd_final_link \ | |
4252 | elf64_alpha_final_link | |
fcfbdf31 JJ |
4253 | #define elf_backend_reloc_type_class \ |
4254 | elf64_alpha_reloc_type_class | |
252b5132 RH |
4255 | |
4256 | #define elf_backend_ecoff_debug_swap \ | |
4257 | &elf64_alpha_ecoff_debug_swap | |
4258 | ||
70bcb145 JW |
4259 | #define elf_backend_size_info \ |
4260 | alpha_elf_size_info | |
4261 | ||
38b1a46c | 4262 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
4263 | #define elf_backend_want_got_plt 0 |
4264 | #define elf_backend_plt_readonly 0 | |
4265 | #define elf_backend_want_plt_sym 1 | |
4266 | #define elf_backend_got_header_size 0 | |
4267 | #define elf_backend_plt_header_size PLT_HEADER_SIZE | |
4268 | ||
4269 | #include "elf64-target.h" |