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* cris-dis.c (cris_get_disassembler): If abfd is NULL, return
[deliverable/binutils-gdb.git] / bfd / elf64-alpha.c
CommitLineData
252b5132
RH		 1/* Alpha specific support for 64-bit ELF
2 Copyright 1996, 97, 98, 1999 Free Software Foundation, Inc.
3 Contributed by Richard Henderson <rth@tamu.edu>.
4
5This file is part of BFD, the Binary File Descriptor library.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with this program; if not, write to the Free Software
19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21/* We need a published ABI spec for this. Until one comes out, don't
22 assume this'll remain unchanged forever. */
23
24#include "bfd.h"
25#include "sysdep.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
28
29#include "elf/alpha.h"
30
31#define ALPHAECOFF
32
33#define NO_COFF_RELOCS
34#define NO_COFF_SYMBOLS
35#define NO_COFF_LINENOS
36
37/* Get the ECOFF swapping routines. Needed for the debug information. */
38#include "coff/internal.h"
39#include "coff/sym.h"
40#include "coff/symconst.h"
41#include "coff/ecoff.h"
42#include "coff/alpha.h"
43#include "aout/ar.h"
44#include "libcoff.h"
45#include "libecoff.h"
46#define ECOFF_64
47#include "ecoffswap.h"
48
49static boolean elf64_alpha_mkobject PARAMS ((bfd *));
50static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc
51 PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
52static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create
53 PARAMS((bfd *));
54
55static bfd_reloc_status_type elf64_alpha_reloc_nil
56 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
57static bfd_reloc_status_type elf64_alpha_reloc_bad
58 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
59static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp
60 PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *));
61static bfd_reloc_status_type elf64_alpha_reloc_gpdisp
62 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
63
64static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup
65 PARAMS((bfd *, bfd_reloc_code_real_type));
66static void elf64_alpha_info_to_howto
67 PARAMS((bfd *, arelent *, Elf64_Internal_Rela *));
68
69static boolean elf64_alpha_object_p
70 PARAMS((bfd *));
71static boolean elf64_alpha_section_from_shdr
72 PARAMS((bfd *, Elf64_Internal_Shdr *, char *));
73static boolean elf64_alpha_fake_sections
74 PARAMS((bfd *, Elf64_Internal_Shdr *, asection *));
75static boolean elf64_alpha_create_got_section
76 PARAMS((bfd *, struct bfd_link_info *));
77static boolean elf64_alpha_create_dynamic_sections
78 PARAMS((bfd *, struct bfd_link_info *));
79
80static boolean elf64_alpha_read_ecoff_info
81 PARAMS((bfd *, asection *, struct ecoff_debug_info *));
82static boolean elf64_alpha_is_local_label_name
83 PARAMS((bfd *, const char *));
84static boolean elf64_alpha_find_nearest_line
85 PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **,
86 const char **, unsigned int *));
87
88#if defined(__STDC__) || defined(ALMOST_STDC)
89struct alpha_elf_link_hash_entry;
90#endif
91
92static boolean elf64_alpha_output_extsym
93 PARAMS((struct alpha_elf_link_hash_entry *, PTR));
94
95static boolean elf64_alpha_can_merge_gots
96 PARAMS((bfd *, bfd *));
97static void elf64_alpha_merge_gots
98 PARAMS((bfd *, bfd *));
99static boolean elf64_alpha_calc_got_offsets_for_symbol
100 PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
101static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *));
102static boolean elf64_alpha_size_got_sections
103 PARAMS ((bfd *, struct bfd_link_info *));
104static boolean elf64_alpha_always_size_sections
105 PARAMS ((bfd *, struct bfd_link_info *));
106static boolean elf64_alpha_calc_dynrel_sizes
107 PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *));
108static boolean elf64_alpha_add_symbol_hook
109 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
110 const char **, flagword *, asection **, bfd_vma *));
111static boolean elf64_alpha_check_relocs
112 PARAMS((bfd *, struct bfd_link_info *, asection *sec,
113 const Elf_Internal_Rela *));
114static boolean elf64_alpha_adjust_dynamic_symbol
115 PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *));
116static boolean elf64_alpha_size_dynamic_sections
117 PARAMS((bfd *, struct bfd_link_info *));
252b5132
RH		 118static boolean elf64_alpha_relocate_section
119 PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
120 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
121static boolean elf64_alpha_finish_dynamic_symbol
122 PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
123 Elf_Internal_Sym *));
124static boolean elf64_alpha_finish_dynamic_sections
125 PARAMS((bfd *, struct bfd_link_info *));
126static boolean elf64_alpha_final_link
127 PARAMS((bfd *, struct bfd_link_info *));
cd6f9321
L		 128static boolean elf64_alpha_merge_ind_symbols
129 PARAMS((struct alpha_elf_link_hash_entry *, PTR));
130static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs
131 PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int));
252b5132
RH		 132
133\f
134struct alpha_elf_link_hash_entry
135{
136 struct elf_link_hash_entry root;
137
138 /* External symbol information. */
139 EXTR esym;
140
141 /* Cumulative flags for all the .got entries. */
142 int flags;
143
144 /* Contexts (LITUSE) in which a literal was referenced. */
145#define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01
146#define ALPHA_ELF_LINK_HASH_LU_MEM 0x02
147#define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04
148#define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08
149
150 /* Used to implement multiple .got subsections. */
151 struct alpha_elf_got_entry
152 {
153 struct alpha_elf_got_entry *next;
154
155 /* which .got subsection? */
156 bfd *gotobj;
157
158 /* the addend in effect for this entry. */
159 bfd_vma addend;
160
161 /* the .got offset for this entry. */
162 int got_offset;
163
164 int flags;
165
166 /* An additional flag. */
167#define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10
168
169 int use_count;
170 } *got_entries;
171
172 /* used to count non-got, non-plt relocations for delayed sizing
173 of relocation sections. */
174 struct alpha_elf_reloc_entry
175 {
176 struct alpha_elf_reloc_entry *next;
177
178 /* which .reloc section? */
179 asection *srel;
180
181 /* what kind of relocation? */
182 unsigned long rtype;
183
184 /* how many did we find? */
185 unsigned long count;
186 } *reloc_entries;
187};
188
189/* Alpha ELF linker hash table. */
190
191struct alpha_elf_link_hash_table
192{
193 struct elf_link_hash_table root;
194
195 /* The head of a list of .got subsections linked through
196 alpha_elf_tdata(abfd)->got_link_next. */
197 bfd *got_list;
198};
199
200/* Look up an entry in a Alpha ELF linker hash table. */
201
202#define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \
203 ((struct alpha_elf_link_hash_entry *) \
204 elf_link_hash_lookup (&(table)->root, (string), (create), \
205 (copy), (follow)))
206
207/* Traverse a Alpha ELF linker hash table. */
208
209#define alpha_elf_link_hash_traverse(table, func, info) \
210 (elf_link_hash_traverse \
211 (&(table)->root, \
212 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
213 (info)))
214
215/* Get the Alpha ELF linker hash table from a link_info structure. */
216
217#define alpha_elf_hash_table(p) \
218 ((struct alpha_elf_link_hash_table *) ((p)->hash))
219
220/* Get the object's symbols as our own entry type. */
221
222#define alpha_elf_sym_hashes(abfd) \
223 ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd))
224
225/* Should we do dynamic things to this symbol? */
226
227#define alpha_elf_dynamic_symbol_p(h, info) \
228 ((((info)->shared && !(info)->symbolic) \
229 || (((h)->elf_link_hash_flags \
230 & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \
231 == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \
232 || (h)->root.type == bfd_link_hash_undefweak \
233 || (h)->root.type == bfd_link_hash_defweak) \
234 && (h)->dynindx != -1)
235
236/* Create an entry in a Alpha ELF linker hash table. */
237
238static struct bfd_hash_entry *
239elf64_alpha_link_hash_newfunc (entry, table, string)
240 struct bfd_hash_entry *entry;
241 struct bfd_hash_table *table;
242 const char *string;
243{
244 struct alpha_elf_link_hash_entry *ret =
245 (struct alpha_elf_link_hash_entry *) entry;
246
247 /* Allocate the structure if it has not already been allocated by a
248 subclass. */
249 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
250 ret = ((struct alpha_elf_link_hash_entry *)
251 bfd_hash_allocate (table,
252 sizeof (struct alpha_elf_link_hash_entry)));
253 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
254 return (struct bfd_hash_entry *) ret;
255
256 /* Call the allocation method of the superclass. */
257 ret = ((struct alpha_elf_link_hash_entry *)
258 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
259 table, string));
260 if (ret != (struct alpha_elf_link_hash_entry *) NULL)
261 {
262 /* Set local fields. */
263 memset (&ret->esym, 0, sizeof (EXTR));
264 /* We use -2 as a marker to indicate that the information has
265 not been set. -1 means there is no associated ifd. */
266 ret->esym.ifd = -2;
267 ret->flags = 0;
268 ret->got_entries = NULL;
269 ret->reloc_entries = NULL;
270 }
271
272 return (struct bfd_hash_entry *) ret;
273}
274
275/* Create a Alpha ELF linker hash table. */
276
277static struct bfd_link_hash_table *
278elf64_alpha_bfd_link_hash_table_create (abfd)
279 bfd *abfd;
280{
281 struct alpha_elf_link_hash_table *ret;
282
283 ret = ((struct alpha_elf_link_hash_table *)
284 bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table)));
285 if (ret == (struct alpha_elf_link_hash_table *) NULL)
286 return NULL;
287
288 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
289 elf64_alpha_link_hash_newfunc))
290 {
291 bfd_release (abfd, ret);
292 return NULL;
293 }
294
295 return &ret->root.root;
296}
297\f
298/* We have some private fields hanging off of the elf_tdata structure. */
299
300struct alpha_elf_obj_tdata
301{
302 struct elf_obj_tdata root;
303
304 /* For every input file, these are the got entries for that object's
305 local symbols. */
306 struct alpha_elf_got_entry ** local_got_entries;
307
308 /* For every input file, this is the object that owns the got that
309 this input file uses. */
310 bfd *gotobj;
311
312 /* For every got, this is a linked list through the objects using this got */
313 bfd *in_got_link_next;
314
315 /* For every got, this is a link to the next got subsegment. */
316 bfd *got_link_next;
317
318 /* For every got, this is the section. */
319 asection *got;
320
321 /* For every got, this is it's total number of *entries*. */
322 int total_got_entries;
323
324 /* For every got, this is the sum of the number of *entries* required
325 to hold all of the member object's local got. */
326 int n_local_got_entries;
327};
328
329#define alpha_elf_tdata(abfd) \
330 ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any)
331
332static boolean
333elf64_alpha_mkobject (abfd)
334 bfd *abfd;
335{
336 abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata));
337 if (abfd->tdata.any == NULL)
338 return false;
339 return true;
340}
341
342static boolean
343elf64_alpha_object_p (abfd)
344 bfd *abfd;
345{
346 /* Allocate our special target data. */
347 struct alpha_elf_obj_tdata *new_tdata;
348 new_tdata = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata));
349 if (new_tdata == NULL)
350 return false;
351 new_tdata->root = *abfd->tdata.elf_obj_data;
352 abfd->tdata.any = new_tdata;
353
354 /* Set the right machine number for an Alpha ELF file. */
355 return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
356}
357\f
358/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
359 from smaller values. Start with zero, widen, *then* decrement. */
360#define MINUS_ONE (((bfd_vma)0) - 1)
361
362static reloc_howto_type elf64_alpha_howto_table[] =
363{
364 HOWTO (R_ALPHA_NONE, /* type */
365 0, /* rightshift */
366 0, /* size (0 = byte, 1 = short, 2 = long) */
367 8, /* bitsize */
368 true, /* pc_relative */
369 0, /* bitpos */
370 complain_overflow_dont, /* complain_on_overflow */
371 elf64_alpha_reloc_nil, /* special_function */
372 "NONE", /* name */
373 false, /* partial_inplace */
374 0, /* src_mask */
375 0, /* dst_mask */
376 true), /* pcrel_offset */
377
378 /* A 32 bit reference to a symbol. */
379 HOWTO (R_ALPHA_REFLONG, /* type */
380 0, /* rightshift */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
382 32, /* bitsize */
383 false, /* pc_relative */
384 0, /* bitpos */
385 complain_overflow_bitfield, /* complain_on_overflow */
386 0, /* special_function */
387 "REFLONG", /* name */
388 false, /* partial_inplace */
389 0xffffffff, /* src_mask */
390 0xffffffff, /* dst_mask */
391 false), /* pcrel_offset */
392
393 /* A 64 bit reference to a symbol. */
394 HOWTO (R_ALPHA_REFQUAD, /* type */
395 0, /* rightshift */
396 4, /* size (0 = byte, 1 = short, 2 = long) */
397 64, /* bitsize */
398 false, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_bitfield, /* complain_on_overflow */
401 0, /* special_function */
402 "REFQUAD", /* name */
403 false, /* partial_inplace */
404 MINUS_ONE, /* src_mask */
405 MINUS_ONE, /* dst_mask */
406 false), /* pcrel_offset */
407
408 /* A 32 bit GP relative offset. This is just like REFLONG except
409 that when the value is used the value of the gp register will be
410 added in. */
411 HOWTO (R_ALPHA_GPREL32, /* type */
412 0, /* rightshift */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
414 32, /* bitsize */
415 false, /* pc_relative */
416 0, /* bitpos */
417 complain_overflow_bitfield, /* complain_on_overflow */
418 0, /* special_function */
419 "GPREL32", /* name */
420 false, /* partial_inplace */
421 0xffffffff, /* src_mask */
422 0xffffffff, /* dst_mask */
423 false), /* pcrel_offset */
424
425 /* Used for an instruction that refers to memory off the GP register. */
426 HOWTO (R_ALPHA_LITERAL, /* type */
427 0, /* rightshift */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 false, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_signed, /* complain_on_overflow */
433 0, /* special_function */
434 "ELF_LITERAL", /* name */
435 false, /* partial_inplace */
436 0xffff, /* src_mask */
437 0xffff, /* dst_mask */
438 false), /* pcrel_offset */
439
440 /* This reloc only appears immediately following an ELF_LITERAL reloc.
441 It identifies a use of the literal. The symbol index is special:
442 1 means the literal address is in the base register of a memory
443 format instruction; 2 means the literal address is in the byte
444 offset register of a byte-manipulation instruction; 3 means the
445 literal address is in the target register of a jsr instruction.
446 This does not actually do any relocation. */
447 HOWTO (R_ALPHA_LITUSE, /* type */
448 0, /* rightshift */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
450 32, /* bitsize */
451 false, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_dont, /* complain_on_overflow */
454 elf64_alpha_reloc_nil, /* special_function */
455 "LITUSE", /* name */
456 false, /* partial_inplace */
457 0, /* src_mask */
458 0, /* dst_mask */
459 false), /* pcrel_offset */
460
461 /* Load the gp register. This is always used for a ldah instruction
462 which loads the upper 16 bits of the gp register. The symbol
463 index of the GPDISP instruction is an offset in bytes to the lda
464 instruction that loads the lower 16 bits. The value to use for
465 the relocation is the difference between the GP value and the
466 current location; the load will always be done against a register
467 holding the current address.
468
469 NOTE: Unlike ECOFF, partial in-place relocation is not done. If
470 any offset is present in the instructions, it is an offset from
471 the register to the ldah instruction. This lets us avoid any
472 stupid hackery like inventing a gp value to do partial relocation
473 against. Also unlike ECOFF, we do the whole relocation off of
474 the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd,
475 space consuming bit, that, since all the information was present
476 in the GPDISP_HI16 reloc. */
477 HOWTO (R_ALPHA_GPDISP, /* type */
478 16, /* rightshift */
479 2, /* size (0 = byte, 1 = short, 2 = long) */
480 16, /* bitsize */
481 false, /* pc_relative */
482 0, /* bitpos */
483 complain_overflow_dont, /* complain_on_overflow */
484 elf64_alpha_reloc_gpdisp, /* special_function */
485 "GPDISP", /* name */
486 false, /* partial_inplace */
487 0xffff, /* src_mask */
488 0xffff, /* dst_mask */
489 true), /* pcrel_offset */
490
491 /* A 21 bit branch. */
492 HOWTO (R_ALPHA_BRADDR, /* type */
493 2, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 21, /* bitsize */
496 true, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_signed, /* complain_on_overflow */
499 0, /* special_function */
500 "BRADDR", /* name */
501 false, /* partial_inplace */
502 0x1fffff, /* src_mask */
503 0x1fffff, /* dst_mask */
504 true), /* pcrel_offset */
505
506 /* A hint for a jump to a register. */
507 HOWTO (R_ALPHA_HINT, /* type */
508 2, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 14, /* bitsize */
511 true, /* pc_relative */
512 0, /* bitpos */
513 complain_overflow_dont, /* complain_on_overflow */
514 0, /* special_function */
515 "HINT", /* name */
516 false, /* partial_inplace */
517 0x3fff, /* src_mask */
518 0x3fff, /* dst_mask */
519 true), /* pcrel_offset */
520
521 /* 16 bit PC relative offset. */
522 HOWTO (R_ALPHA_SREL16, /* type */
523 0, /* rightshift */
524 1, /* size (0 = byte, 1 = short, 2 = long) */
525 16, /* bitsize */
526 true, /* pc_relative */
527 0, /* bitpos */
528 complain_overflow_signed, /* complain_on_overflow */
529 0, /* special_function */
530 "SREL16", /* name */
531 false, /* partial_inplace */
532 0xffff, /* src_mask */
533 0xffff, /* dst_mask */
534 false), /* pcrel_offset */
535
536 /* 32 bit PC relative offset. */
537 HOWTO (R_ALPHA_SREL32, /* type */
538 0, /* rightshift */
539 2, /* size (0 = byte, 1 = short, 2 = long) */
540 32, /* bitsize */
541 true, /* pc_relative */
542 0, /* bitpos */
543 complain_overflow_signed, /* complain_on_overflow */
544 0, /* special_function */
545 "SREL32", /* name */
546 false, /* partial_inplace */
547 0xffffffff, /* src_mask */
548 0xffffffff, /* dst_mask */
549 false), /* pcrel_offset */
550
551 /* A 64 bit PC relative offset. */
552 HOWTO (R_ALPHA_SREL64, /* type */
553 0, /* rightshift */
554 4, /* size (0 = byte, 1 = short, 2 = long) */
555 64, /* bitsize */
556 true, /* pc_relative */
557 0, /* bitpos */
558 complain_overflow_signed, /* complain_on_overflow */
559 0, /* special_function */
560 "SREL64", /* name */
561 false, /* partial_inplace */
562 MINUS_ONE, /* src_mask */
563 MINUS_ONE, /* dst_mask */
564 false), /* pcrel_offset */
565
566 /* Push a value on the reloc evaluation stack. */
567 /* Not implemented -- it's dumb. */
568 HOWTO (R_ALPHA_OP_PUSH, /* type */
569 0, /* rightshift */
570 0, /* size (0 = byte, 1 = short, 2 = long) */
571 0, /* bitsize */
572 false, /* pc_relative */
573 0, /* bitpos */
574 complain_overflow_dont, /* complain_on_overflow */
575 elf64_alpha_reloc_bad, /* special_function */
576 "OP_PUSH", /* name */
577 false, /* partial_inplace */
578 0, /* src_mask */
579 0, /* dst_mask */
580 false), /* pcrel_offset */
581
582 /* Store the value from the stack at the given address. Store it in
583 a bitfield of size r_size starting at bit position r_offset. */
584 /* Not implemented -- it's dumb. */
585 HOWTO (R_ALPHA_OP_STORE, /* type */
586 0, /* rightshift */
587 4, /* size (0 = byte, 1 = short, 2 = long) */
588 64, /* bitsize */
589 false, /* pc_relative */
590 0, /* bitpos */
591 complain_overflow_dont, /* complain_on_overflow */
592 elf64_alpha_reloc_bad, /* special_function */
593 "OP_STORE", /* name */
594 false, /* partial_inplace */
595 0, /* src_mask */
596 MINUS_ONE, /* dst_mask */
597 false), /* pcrel_offset */
598
599 /* Subtract the reloc address from the value on the top of the
600 relocation stack. */
601 /* Not implemented -- it's dumb. */
602 HOWTO (R_ALPHA_OP_PSUB, /* type */
603 0, /* rightshift */
604 0, /* size (0 = byte, 1 = short, 2 = long) */
605 0, /* bitsize */
606 false, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 elf64_alpha_reloc_bad, /* special_function */
610 "OP_PSUB", /* name */
611 false, /* partial_inplace */
612 0, /* src_mask */
613 0, /* dst_mask */
614 false), /* pcrel_offset */
615
616 /* Shift the value on the top of the relocation stack right by the
617 given value. */
618 /* Not implemented -- it's dumb. */
619 HOWTO (R_ALPHA_OP_PRSHIFT, /* type */
620 0, /* rightshift */
621 0, /* size (0 = byte, 1 = short, 2 = long) */
622 0, /* bitsize */
623 false, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 elf64_alpha_reloc_bad, /* special_function */
627 "OP_PRSHIFT", /* name */
628 false, /* partial_inplace */
629 0, /* src_mask */
630 0, /* dst_mask */
631 false), /* pcrel_offset */
632
633 /* Change the value of GP used by +r_addend until the next GPVALUE or the
634 end of the input bfd. */
635 /* Not implemented -- it's dumb. */
636 HOWTO (R_ALPHA_GPVALUE,
637 0, /* rightshift */
638 0, /* size (0 = byte, 1 = short, 2 = long) */
639 0, /* bitsize */
640 false, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_dont, /* complain_on_overflow */
643 elf64_alpha_reloc_bad, /* special_function */
644 "GPVALUE", /* name */
645 false, /* partial_inplace */
646 0, /* src_mask */
647 0, /* dst_mask */
648 false), /* pcrel_offset */
649
650 /* The high 16 bits of the displacement from GP to the target. */
651 HOWTO (R_ALPHA_GPRELHIGH,
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 false, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_signed, /* complain_on_overflow */
658 elf64_alpha_reloc_bad, /* special_function */
659 "GPRELHIGH", /* name */
660 false, /* partial_inplace */
661 0xffff, /* src_mask */
662 0xffff, /* dst_mask */
663 false), /* pcrel_offset */
664
665 /* The low 16 bits of the displacement from GP to the target. */
666 HOWTO (R_ALPHA_GPRELLOW,
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
670 false, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 elf64_alpha_reloc_bad, /* special_function */
674 "GPRELLOW", /* name */
675 false, /* partial_inplace */
676 0xffff, /* src_mask */
677 0xffff, /* dst_mask */
678 false), /* pcrel_offset */
679
680 /* A 16-bit displacement from the GP to the target. */
681 /* XXX: Not implemented. */
682 HOWTO (R_ALPHA_IMMED_GP_16,
683 0, /* rightshift */
684 2, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
686 false, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_signed, /* complain_on_overflow */
689 0, /* special_function */
690 "IMMED_GP_16", /* name */
691 false, /* partial_inplace */
692 0xffff, /* src_mask */
693 0xffff, /* dst_mask */
694 false), /* pcrel_offset */
695
696 /* The high bits of a 32-bit displacement from the GP to the target; the
697 low bits are supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */
698 /* XXX: Not implemented. */
699 HOWTO (R_ALPHA_IMMED_GP_HI32,
700 0, /* rightshift */
701 0, /* size (0 = byte, 1 = short, 2 = long) */
702 0, /* bitsize */
703 false, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_dont, /* complain_on_overflow */
706 elf64_alpha_reloc_bad, /* special_function */
707 "IMMED_GP_HI32", /* name */
708 false, /* partial_inplace */
709 0, /* src_mask */
710 0, /* dst_mask */
711 false), /* pcrel_offset */
712
713 /* The high bits of a 32-bit displacement to the starting address of the
714 current section (the relocation target is ignored); the low bits are
715 supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */
716 /* XXX: Not implemented. */
717 HOWTO (R_ALPHA_IMMED_SCN_HI32,
718 0, /* rightshift */
719 0, /* size (0 = byte, 1 = short, 2 = long) */
720 0, /* bitsize */
721 false, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_dont, /* complain_on_overflow */
724 elf64_alpha_reloc_bad, /* special_function */
725 "IMMED_SCN_HI32", /* name */
726 false, /* partial_inplace */
727 0, /* src_mask */
728 0, /* dst_mask */
729 false), /* pcrel_offset */
730
731 /* The high bits of a 32-bit displacement from the previous br, bsr, jsr
732 or jmp insn (as tagged by a BRADDR or HINT reloc) to the target; the
733 low bits are supplied by subsequent R_ALPHA_IMMED_LO32 relocs. */
734 /* XXX: Not implemented. */
735 HOWTO (R_ALPHA_IMMED_BR_HI32,
736 0, /* rightshift */
737 0, /* size (0 = byte, 1 = short, 2 = long) */
738 0, /* bitsize */
739 false, /* pc_relative */
740 0, /* bitpos */
741 complain_overflow_dont, /* complain_on_overflow */
742 elf64_alpha_reloc_bad, /* special_function */
743 "IMMED_BR_HI32", /* name */
744 false, /* partial_inplace */
745 0, /* src_mask */
746 0, /* dst_mask */
747 false), /* pcrel_offset */
748
749 /* The low 16 bits of a displacement calculated in a previous HI32 reloc. */
750 /* XXX: Not implemented. */
751 HOWTO (R_ALPHA_IMMED_LO32,
752 0, /* rightshift */
753 0, /* size (0 = byte, 1 = short, 2 = long) */
754 0, /* bitsize */
755 false, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
758 elf64_alpha_reloc_bad, /* special_function */
759 "IMMED_LO32", /* name */
760 false, /* partial_inplace */
761 0, /* src_mask */
762 0, /* dst_mask */
763 false), /* pcrel_offset */
764
765 /* Misc ELF relocations. */
766
767 /* A dynamic relocation to copy the target into our .dynbss section. */
768 /* Not generated, as all Alpha objects use PIC, so it is not needed. It
769 is present because every other ELF has one, but should not be used
770 because .dynbss is an ugly thing. */
771 HOWTO (R_ALPHA_COPY,
772 0,
773 0,
774 0,
775 false,
776 0,
777 complain_overflow_dont,
778 bfd_elf_generic_reloc,
779 "COPY",
780 false,
781 0,
782 0,
783 true),
784
785 /* A dynamic relocation for a .got entry. */
786 HOWTO (R_ALPHA_GLOB_DAT,
787 0,
788 0,
789 0,
790 false,
791 0,
792 complain_overflow_dont,
793 bfd_elf_generic_reloc,
794 "GLOB_DAT",
795 false,
796 0,
797 0,
798 true),
799
800 /* A dynamic relocation for a .plt entry. */
801 HOWTO (R_ALPHA_JMP_SLOT,
802 0,
803 0,
804 0,
805 false,
806 0,
807 complain_overflow_dont,
808 bfd_elf_generic_reloc,
809 "JMP_SLOT",
810 false,
811 0,
812 0,
813 true),
814
815 /* A dynamic relocation to add the base of the DSO to a 64-bit field. */
816 HOWTO (R_ALPHA_RELATIVE,
817 0,
818 0,
819 0,
820 false,
821 0,
822 complain_overflow_dont,
823 bfd_elf_generic_reloc,
824 "RELATIVE",
825 false,
826 0,
827 0,
828 true)
829};
830
831/* A relocation function which doesn't do anything. */
832
833static bfd_reloc_status_type
834elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message)
835 bfd *abfd;
836 arelent *reloc;
837 asymbol *sym;
838 PTR data;
839 asection *sec;
840 bfd *output_bfd;
841 char **error_message;
842{
843 if (output_bfd)
844 reloc->address += sec->output_offset;
845 return bfd_reloc_ok;
846}
847
848/* A relocation function used for an unsupported reloc. */
849
850static bfd_reloc_status_type
851elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message)
852 bfd *abfd;
853 arelent *reloc;
854 asymbol *sym;
855 PTR data;
856 asection *sec;
857 bfd *output_bfd;
858 char **error_message;
859{
860 if (output_bfd)
861 reloc->address += sec->output_offset;
862 return bfd_reloc_notsupported;
863}
864
865/* Do the work of the GPDISP relocation. */
866
867static bfd_reloc_status_type
868elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda)
869 bfd *abfd;
870 bfd_vma gpdisp;
871 bfd_byte *p_ldah;
872 bfd_byte *p_lda;
873{
874 bfd_reloc_status_type ret = bfd_reloc_ok;
875 bfd_vma addend;
876 unsigned long i_ldah, i_lda;
877
878 i_ldah = bfd_get_32 (abfd, p_ldah);
879 i_lda = bfd_get_32 (abfd, p_lda);
880
881 /* Complain if the instructions are not correct. */
882 if (((i_ldah >> 26) & 0x3f) != 0x09
883 || ((i_lda >> 26) & 0x3f) != 0x08)
884 ret = bfd_reloc_dangerous;
885
886 /* Extract the user-supplied offset, mirroring the sign extensions
887 that the instructions perform. */
888 addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff);
889 addend = (addend ^ 0x80008000) - 0x80008000;
890
891 gpdisp += addend;
892
893 if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000
894 || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000)
895 ret = bfd_reloc_overflow;
896
897 /* compensate for the sign extension again. */
898 i_ldah = ((i_ldah & 0xffff0000)
899 | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff));
900 i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff);
901
902 bfd_put_32 (abfd, i_ldah, p_ldah);
903 bfd_put_32 (abfd, i_lda, p_lda);
904
905 return ret;
906}
907
908/* The special function for the GPDISP reloc. */
909
910static bfd_reloc_status_type
911elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section,
912 output_bfd, err_msg)
913 bfd *abfd;
914 arelent *reloc_entry;
915 asymbol *sym;
916 PTR data;
917 asection *input_section;
918 bfd *output_bfd;
919 char **err_msg;
920{
921 bfd_reloc_status_type ret;
922 bfd_vma gp, relocation;
923 bfd_byte *p_ldah, *p_lda;
924
925 /* Don't do anything if we're not doing a final link. */
926 if (output_bfd)
927 {
928 reloc_entry->address += input_section->output_offset;
929 return bfd_reloc_ok;
930 }
931
932 if (reloc_entry->address > input_section->_cooked_size ||
933 reloc_entry->address + reloc_entry->addend > input_section->_cooked_size)
934 return bfd_reloc_outofrange;
935
936 /* The gp used in the portion of the output object to which this
937 input object belongs is cached on the input bfd. */
938 gp = _bfd_get_gp_value (abfd);
939
940 relocation = (input_section->output_section->vma
941 + input_section->output_offset
942 + reloc_entry->address);
943
944 p_ldah = (bfd_byte *) data + reloc_entry->address;
945 p_lda = p_ldah + reloc_entry->addend;
946
947 ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda);
948
949 /* Complain if the instructions are not correct. */
950 if (ret == bfd_reloc_dangerous)
951 *err_msg = _("GPDISP relocation did not find ldah and lda instructions");
952
953 return ret;
954}
955
956/* A mapping from BFD reloc types to Alpha ELF reloc types. */
957
958struct elf_reloc_map
959{
960 bfd_reloc_code_real_type bfd_reloc_val;
961 int elf_reloc_val;
962};
963
964static const struct elf_reloc_map elf64_alpha_reloc_map[] =
965{
966 {BFD_RELOC_NONE, R_ALPHA_NONE},
967 {BFD_RELOC_32, R_ALPHA_REFLONG},
968 {BFD_RELOC_64, R_ALPHA_REFQUAD},
969 {BFD_RELOC_CTOR, R_ALPHA_REFQUAD},
970 {BFD_RELOC_GPREL32, R_ALPHA_GPREL32},
971 {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL},
972 {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE},
973 {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP},
974 {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR},
975 {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT},
976 {BFD_RELOC_16_PCREL, R_ALPHA_SREL16},
977 {BFD_RELOC_32_PCREL, R_ALPHA_SREL32},
978 {BFD_RELOC_64_PCREL, R_ALPHA_SREL64},
fe174262
MM		 979
980/* The BFD_RELOC_ALPHA_USER_* relocations are used by the assembler to process
981 the explicit !<reloc>!sequence relocations, and are mapped into the normal
982 relocations at the end of processing. */
983 {BFD_RELOC_ALPHA_USER_LITERAL, R_ALPHA_LITERAL},
984 {BFD_RELOC_ALPHA_USER_LITUSE_BASE, R_ALPHA_LITUSE},
985 {BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF, R_ALPHA_LITUSE},
986 {BFD_RELOC_ALPHA_USER_LITUSE_JSR, R_ALPHA_LITUSE},
987 {BFD_RELOC_ALPHA_USER_GPDISP, R_ALPHA_GPDISP},
988 {BFD_RELOC_ALPHA_USER_GPRELHIGH, R_ALPHA_GPRELHIGH},
989 {BFD_RELOC_ALPHA_USER_GPRELLOW, R_ALPHA_GPRELLOW},
252b5132
RH		 990};
991
992/* Given a BFD reloc type, return a HOWTO structure. */
993
994static reloc_howto_type *
995elf64_alpha_bfd_reloc_type_lookup (abfd, code)
996 bfd *abfd;
997 bfd_reloc_code_real_type code;
998{
999 const struct elf_reloc_map *i, *e;
1000 i = e = elf64_alpha_reloc_map;
1001 e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map);
1002 for (; i != e; ++i)
1003 {
1004 if (i->bfd_reloc_val == code)
1005 return &elf64_alpha_howto_table[i->elf_reloc_val];
1006 }
1007 return 0;
1008}
1009
1010/* Given an Alpha ELF reloc type, fill in an arelent structure. */
1011
1012static void
1013elf64_alpha_info_to_howto (abfd, cache_ptr, dst)
1014 bfd *abfd;
1015 arelent *cache_ptr;
1016 Elf64_Internal_Rela *dst;
1017{
1018 unsigned r_type;
1019
1020 r_type = ELF64_R_TYPE(dst->r_info);
1021 BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max);
1022 cache_ptr->howto = &elf64_alpha_howto_table[r_type];
1023}
1024\f
1025/* These functions do relaxation for Alpha ELF.
1026
1027 Currently I'm only handling what I can do with existing compiler
1028 and assembler support, which means no instructions are removed,
1029 though some may be nopped. At this time GCC does not emit enough
1030 information to do all of the relaxing that is possible. It will
1031 take some not small amount of work for that to happen.
1032
1033 There are a couple of interesting papers that I once read on this
1034 subject, that I cannot find references to at the moment, that
1035 related to Alpha in particular. They are by David Wall, then of
1036 DEC WRL. */
1037
1038#define OP_LDA 0x08
1039#define OP_LDAH 0x09
1040#define INSN_JSR 0x68004000
1041#define INSN_JSR_MASK 0xfc00c000
1042#define OP_LDQ 0x29
1043#define OP_BR 0x30
1044#define OP_BSR 0x34
1045#define INSN_UNOP 0x2fe00000
1046
1047struct alpha_relax_info
1048{
1049 bfd *abfd;
1050 asection *sec;
1051 bfd_byte *contents;
1052 Elf_Internal_Rela *relocs, *relend;
1053 struct bfd_link_info *link_info;
1054 boolean changed_contents;
1055 boolean changed_relocs;
1056 bfd_vma gp;
1057 bfd *gotobj;
1058 asection *tsec;
1059 struct alpha_elf_link_hash_entry *h;
1060 struct alpha_elf_got_entry *gotent;
1061 unsigned char other;
1062};
1063
1064static Elf_Internal_Rela * elf64_alpha_relax_with_lituse
1065 PARAMS((struct alpha_relax_info *info, bfd_vma symval,
1066 Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend));
1067
1068static boolean elf64_alpha_relax_without_lituse
1069 PARAMS((struct alpha_relax_info *info, bfd_vma symval,
1070 Elf_Internal_Rela *irel));
1071
1072static bfd_vma elf64_alpha_relax_opt_call
1073 PARAMS((struct alpha_relax_info *info, bfd_vma symval));
1074
1075static boolean elf64_alpha_relax_section
1076 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
1077 boolean *again));
1078
1079static Elf_Internal_Rela *
1080elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type)
1081 Elf_Internal_Rela *rel, *relend;
1082 bfd_vma offset;
1083 int type;
1084{
1085 while (rel < relend)
1086 {
1087 if (rel->r_offset == offset && ELF64_R_TYPE (rel->r_info) == type)
1088 return rel;
1089 ++rel;
1090 }
1091 return NULL;
1092}
1093
1094static Elf_Internal_Rela *
1095elf64_alpha_relax_with_lituse (info, symval, irel, irelend)
1096 struct alpha_relax_info *info;
1097 bfd_vma symval;
1098 Elf_Internal_Rela *irel, *irelend;
1099{
1100 Elf_Internal_Rela *urel;
1101 int flags, count, i;
1102 bfd_signed_vma disp;
1103 boolean fits16;
1104 boolean fits32;
1105 boolean lit_reused = false;
1106 boolean all_optimized = true;
1107 unsigned int lit_insn;
1108
1109 lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
1110 if (lit_insn >> 26 != OP_LDQ)
1111 {
1112 ((*_bfd_error_handler)
1113 ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn",
1114 bfd_get_filename (info->abfd), info->sec->name,
1115 (unsigned long)irel->r_offset));
1116 return irel;
1117 }
1118
1119 /* Summarize how this particular LITERAL is used. */
1120 for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count)
1121 {
1122 if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE)
1123 break;
1124 if (urel->r_addend >= 0 && urel->r_addend <= 3)
1125 flags |= 1 << urel->r_addend;
1126 }
1127
1128 /* A little preparation for the loop... */
1129 disp = symval - info->gp;
252b5132
RH		 1130
1131 for (urel = irel+1, i = 0; i < count; ++i, ++urel)
1132 {
1133 unsigned int insn;
ffcb7aff
NC		 1134 int insn_disp;
1135 bfd_signed_vma xdisp;
1136
252b5132
RH		 1137 insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset);
1138
1139 switch (urel->r_addend)
1140 {
1141 default: /* 0 = ADDRESS FORMAT */
1142 /* This type is really just a placeholder to note that all
1143 uses cannot be optimized, but to still allow some. */
1144 all_optimized = false;
1145 break;
1146
1147 case 1: /* MEM FORMAT */
1148 /* We can always optimize 16-bit displacements. */
ffcb7aff
NC		 1149
1150 /* Extract the displacement from the instruction, sign-extending
1151 it if necessary, then test whether it is within 16 or 32 bits
1152 displacement from GP. */
1153 insn_disp = insn & 0x0000ffff;
1154 if (insn_disp & 0x00008000)
1155 insn_disp |= 0xffff0000; /* Negative: sign-extend. */
1156
1157 xdisp = disp + insn_disp;
1158 fits16 = (xdisp >= - (bfd_signed_vma) 0x00008000 && xdisp < 0x00008000);
1159 fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 && xdisp < 0x7fff8000);
1160
252b5132
RH		 1161 if (fits16)
1162 {
ffcb7aff
NC		 1163 /* Take the op code and dest from this insn, take the base
1164 register from the literal insn. Leave the offset alone. */
1165 insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000);
252b5132
RH		 1166 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1167 R_ALPHA_GPRELLOW);
1168 urel->r_addend = irel->r_addend;
1169 info->changed_relocs = true;
1170
1171 bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset);
1172 info->changed_contents = true;
1173 }
1174
1175 /* If all mem+byte, we can optimize 32-bit mem displacements. */
1176 else if (fits32 && !(flags & ~6))
1177 {
ffcb7aff 1178 /* FIXME: sanity check that lit insn Ra is mem insn Rb. */
252b5132
RH		 1179
1180 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1181 R_ALPHA_GPRELHIGH);
1182 lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000);
1183 bfd_put_32 (info->abfd, lit_insn,
1184 info->contents + irel->r_offset);
1185 lit_reused = true;
1186 info->changed_contents = true;
1187
1188 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1189 R_ALPHA_GPRELLOW);
1190 urel->r_addend = irel->r_addend;
1191 info->changed_relocs = true;
1192 }
1193 else
1194 all_optimized = false;
1195 break;
1196
1197 case 2: /* BYTE OFFSET FORMAT */
1198 /* We can always optimize byte instructions. */
1199
1200 /* FIXME: sanity check the insn for byte op. Check that the
1201 literal dest reg is indeed Rb in the byte insn. */
1202
1203 insn = (insn & ~0x001ff000) | ((symval & 7) << 13) | 0x1000;
1204
1205 urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1206 urel->r_addend = 0;
1207 info->changed_relocs = true;
1208
1209 bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset);
1210 info->changed_contents = true;
1211 break;
1212
1213 case 3: /* CALL FORMAT */
1214 {
1215 /* If not zero, place to jump without needing pv. */
1216 bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval);
1217 bfd_vma org = (info->sec->output_section->vma
1218 + info->sec->output_offset
1219 + urel->r_offset + 4);
1220 bfd_signed_vma odisp;
1221
1222 odisp = (optdest ? optdest : symval) - org;
1223 if (odisp >= -0x400000 && odisp < 0x400000)
1224 {
1225 Elf_Internal_Rela *xrel;
1226
1227 /* Preserve branch prediction call stack when possible. */
1228 if ((insn & INSN_JSR_MASK) == INSN_JSR)
1229 insn = (OP_BSR << 26) | (insn & 0x03e00000);
1230 else
1231 insn = (OP_BR << 26) | (insn & 0x03e00000);
1232
1233 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1234 R_ALPHA_BRADDR);
1235 urel->r_addend = irel->r_addend;
1236
1237 if (optdest)
1238 urel->r_addend += optdest - symval;
1239 else
1240 all_optimized = false;
1241
1242 bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset);
1243
1244 /* Kill any HINT reloc that might exist for this insn. */
1245 xrel = (elf64_alpha_find_reloc_at_ofs
1246 (info->relocs, info->relend, urel->r_offset,
1247 R_ALPHA_HINT));
1248 if (xrel)
1249 xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1250
1251 info->changed_contents = true;
1252 info->changed_relocs = true;
1253 }
1254 else
1255 all_optimized = false;
1256
1257 /* ??? If target gp == current gp we can eliminate the gp reload.
1258 This does depend on every place a gp could be reloaded will
1259 be, which currently happens for all code produced by gcc, but
1260 not necessarily by hand-coded assembly, or if sibling calls
1261 are enabled in gcc.
1262
1263 Perhaps conditionalize this on a flag being set in the target
1264 object file's header, and have gcc set it? */
1265 }
1266 break;
1267 }
1268 }
1269
1270 /* If all cases were optimized, we can reduce the use count on this
1271 got entry by one, possibly eliminating it. */
1272 if (all_optimized)
1273 {
1274 info->gotent->use_count -= 1;
1275 alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1;
1276 if (!info->h)
1277 alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1;
1278
1279 /* If the literal instruction is no longer needed (it may have been
1280 reused. We can eliminate it.
1281 ??? For now, I don't want to deal with compacting the section,
1282 so just nop it out. */
1283 if (!lit_reused)
1284 {
1285 irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1286 info->changed_relocs = true;
1287
1288 bfd_put_32 (info->abfd, INSN_UNOP, info->contents + irel->r_offset);
1289 info->changed_contents = true;
1290 }
1291 }
1292
1293 return irel + count;
1294}
1295
1296static bfd_vma
1297elf64_alpha_relax_opt_call (info, symval)
1298 struct alpha_relax_info *info;
1299 bfd_vma symval;
1300{
1301 /* If the function has the same gp, and we can identify that the
1302 function does not use its function pointer, we can eliminate the
1303 address load. */
1304
1305 /* If the symbol is marked NOPV, we are being told the function never
1306 needs its procedure value. */
1307 if (info->other == STO_ALPHA_NOPV)
1308 return symval;
1309
1310 /* If the symbol is marked STD_GP, we are being told the function does
1311 a normal ldgp in the first two words. */
1312 else if (info->other == STO_ALPHA_STD_GPLOAD)
1313 ;
1314
1315 /* Otherwise, we may be able to identify a GP load in the first two
1316 words, which we can then skip. */
1317 else
1318 {
1319 Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp;
1320 bfd_vma ofs;
1321
1322 /* Load the relocations from the section that the target symbol is in. */
1323 if (info->sec == info->tsec)
1324 {
1325 tsec_relocs = info->relocs;
1326 tsec_relend = info->relend;
1327 tsec_free = NULL;
1328 }
1329 else
1330 {
1331 tsec_relocs = (_bfd_elf64_link_read_relocs
1332 (info->abfd, info->tsec, (PTR) NULL,
1333 (Elf_Internal_Rela *) NULL,
1334 info->link_info->keep_memory));
1335 if (tsec_relocs == NULL)
1336 return 0;
1337 tsec_relend = tsec_relocs + info->tsec->reloc_count;
1338 tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs);
1339 }
1340
1341 /* Recover the symbol's offset within the section. */
1342 ofs = (symval - info->tsec->output_section->vma
1343 - info->tsec->output_offset);
1344
1345 /* Look for a GPDISP reloc. */
1346 gpdisp = (elf64_alpha_find_reloc_at_ofs
1347 (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP));
1348
1349 if (!gpdisp || gpdisp->r_addend != 4)
1350 {
1351 if (tsec_free)
1352 free (tsec_free);
1353 return 0;
1354 }
1355 if (tsec_free)
1356 free (tsec_free);
1357 }
1358
1359 /* We've now determined that we can skip an initial gp load. Verify
1360 that the call and the target use the same gp. */
1361 if (info->link_info->hash->creator != info->tsec->owner->xvec
1362 || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj)
1363 return 0;
1364
1365 return symval + 8;
1366}
1367
1368static boolean
1369elf64_alpha_relax_without_lituse (info, symval, irel)
1370 struct alpha_relax_info *info;
1371 bfd_vma symval;
1372 Elf_Internal_Rela *irel;
1373{
1374 unsigned int insn;
1375 bfd_signed_vma disp;
1376
1377 /* Get the instruction. */
1378 insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
1379
1380 if (insn >> 26 != OP_LDQ)
1381 {
1382 ((*_bfd_error_handler)
1383 ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn",
1384 bfd_get_filename (info->abfd), info->sec->name,
1385 (unsigned long) irel->r_offset));
1386 return true;
1387 }
1388
1389 /* So we aren't told much. Do what we can with the address load and
1390 fake the rest. All of the optimizations here require that the
1391 offset from the GP fit in 16 bits. */
1392
1393 disp = symval - info->gp;
1394 if (disp < -0x8000 || disp >= 0x8000)
1395 return true;
1396
1397 /* On the LITERAL instruction itself, consider exchanging
1398 `ldq R,X(gp)' for `lda R,Y(gp)'. */
1399
1400 insn = (OP_LDA << 26) | (insn & 0x03ff0000);
1401 bfd_put_32 (info->abfd, insn, info->contents + irel->r_offset);
1402 info->changed_contents = true;
1403
1404 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPRELLOW);
1405 info->changed_relocs = true;
1406
1407 /* Reduce the use count on this got entry by one, possibly
1408 eliminating it. */
1409 info->gotent->use_count -= 1;
1410 alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1;
1411 if (!info->h)
1412 alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1;
1413
1414 /* ??? Search forward through this basic block looking for insns
1415 that use the target register. Stop after an insn modifying the
1416 register is seen, or after a branch or call.
1417
1418 Any such memory load insn may be substituted by a load directly
1419 off the GP. This allows the memory load insn to be issued before
1420 the calculated GP register would otherwise be ready.
1421
1422 Any such jsr insn can be replaced by a bsr if it is in range.
1423
1424 This would mean that we'd have to _add_ relocations, the pain of
1425 which gives one pause. */
1426
1427 return true;
1428}
1429
1430static boolean
1431elf64_alpha_relax_section (abfd, sec, link_info, again)
1432 bfd *abfd;
1433 asection *sec;
1434 struct bfd_link_info *link_info;
1435 boolean *again;
1436{
1437 Elf_Internal_Shdr *symtab_hdr;
1438 Elf_Internal_Rela *internal_relocs;
1439 Elf_Internal_Rela *free_relocs = NULL;
1440 Elf_Internal_Rela *irel, *irelend;
1441 bfd_byte *free_contents = NULL;
1442 Elf64_External_Sym *extsyms = NULL;
1443 Elf64_External_Sym *free_extsyms = NULL;
1444 struct alpha_elf_got_entry **local_got_entries;
1445 struct alpha_relax_info info;
1446
1447 /* We are not currently changing any sizes, so only one pass. */
1448 *again = false;
1449
1450 if (link_info->relocateable
1451 || (sec->flags & SEC_RELOC) == 0
1452 || sec->reloc_count == 0)
1453 return true;
1454
1455 /* If this is the first time we have been called for this section,
1456 initialize the cooked size. */
1457 if (sec->_cooked_size == 0)
1458 sec->_cooked_size = sec->_raw_size;
1459
1460 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1461 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
1462
1463 /* Load the relocations for this section. */
1464 internal_relocs = (_bfd_elf64_link_read_relocs
1465 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1466 link_info->keep_memory));
1467 if (internal_relocs == NULL)
1468 goto error_return;
1469 if (! link_info->keep_memory)
1470 free_relocs = internal_relocs;
1471
1472 memset(&info, 0, sizeof(info));
1473 info.abfd = abfd;
1474 info.sec = sec;
1475 info.link_info = link_info;
1476 info.relocs = internal_relocs;
1477 info.relend = irelend = internal_relocs + sec->reloc_count;
1478
1479 /* Find the GP for this object. */
1480 info.gotobj = alpha_elf_tdata (abfd)->gotobj;
1481 if (info.gotobj)
1482 {
1483 asection *sgot = alpha_elf_tdata (info.gotobj)->got;
1484 info.gp = _bfd_get_gp_value (info.gotobj);
1485 if (info.gp == 0)
1486 {
1487 info.gp = (sgot->output_section->vma
1488 + sgot->output_offset
1489 + 0x8000);
1490 _bfd_set_gp_value (info.gotobj, info.gp);
1491 }
1492 }
1493
1494 for (irel = internal_relocs; irel < irelend; irel++)
1495 {
1496 bfd_vma symval;
1497 Elf_Internal_Sym isym;
1498 struct alpha_elf_got_entry *gotent;
1499
1500 if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL)
1501 continue;
1502
1503 /* Get the section contents. */
1504 if (info.contents == NULL)
1505 {
1506 if (elf_section_data (sec)->this_hdr.contents != NULL)
1507 info.contents = elf_section_data (sec)->this_hdr.contents;
1508 else
1509 {
1510 info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
1511 if (info.contents == NULL)
1512 goto error_return;
1513 free_contents = info.contents;
1514
1515 if (! bfd_get_section_contents (abfd, sec, info.contents,
1516 (file_ptr) 0, sec->_raw_size))
1517 goto error_return;
1518 }
1519 }
1520
1521 /* Read this BFD's symbols if we haven't done so already. */
1522 if (extsyms == NULL)
1523 {
1524 if (symtab_hdr->contents != NULL)
1525 extsyms = (Elf64_External_Sym *) symtab_hdr->contents;
1526 else
1527 {
1528 extsyms = ((Elf64_External_Sym *)
1529 bfd_malloc (symtab_hdr->sh_size));
1530 if (extsyms == NULL)
1531 goto error_return;
1532 free_extsyms = extsyms;
1533 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
1534 || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd)
1535 != symtab_hdr->sh_size))
1536 goto error_return;
1537 }
1538 }
1539
1540 /* Get the value of the symbol referred to by the reloc. */
1541 if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1542 {
1543 /* A local symbol. */
1544 bfd_elf64_swap_symbol_in (abfd,
1545 extsyms + ELF64_R_SYM (irel->r_info),
1546 &isym);
1547 if (isym.st_shndx == SHN_UNDEF)
1548 info.tsec = bfd_und_section_ptr;
1549 else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE)
1550 info.tsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
1551 else if (isym.st_shndx == SHN_ABS)
1552 info.tsec = bfd_abs_section_ptr;
1553 else if (isym.st_shndx == SHN_COMMON)
1554 info.tsec = bfd_com_section_ptr;
1555 else
1556 continue; /* who knows. */
1557
1558 info.h = NULL;
1559 info.other = isym.st_other;
1560 gotent = local_got_entries[ELF64_R_SYM(irel->r_info)];
1561 symval = isym.st_value;
1562 }
1563 else
1564 {
1565 unsigned long indx;
1566 struct alpha_elf_link_hash_entry *h;
1567
1568 indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1569 h = alpha_elf_sym_hashes (abfd)[indx];
1570 BFD_ASSERT (h != NULL);
1571
1572 while (h->root.root.type == bfd_link_hash_indirect
1573 || h->root.root.type == bfd_link_hash_warning)
1574 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
1575
1576 /* We can't do anthing with undefined or dynamic symbols. */
1577 if (h->root.root.type == bfd_link_hash_undefined
1578 || h->root.root.type == bfd_link_hash_undefweak
1579 || alpha_elf_dynamic_symbol_p (&h->root, link_info))
1580 continue;
1581
1582 info.h = h;
1583 info.gotent = gotent;
1584 info.tsec = h->root.root.u.def.section;
1585 info.other = h->root.other;
1586 gotent = h->got_entries;
1587 symval = h->root.root.u.def.value;
1588 }
1589
1590 /* Search for the got entry to be used by this relocation. */
1591 while (gotent->gotobj != info.gotobj || gotent->addend != irel->r_addend)
1592 gotent = gotent->next;
1593 info.gotent = gotent;
1594
1595 symval += info.tsec->output_section->vma + info.tsec->output_offset;
1596 symval += irel->r_addend;
1597
1598 BFD_ASSERT(info.gotent != NULL);
1599
1600 /* If there exist LITUSE relocations immediately following, this
1601 opens up all sorts of interesting optimizations, because we
1602 now know every location that this address load is used. */
1603
1604 if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE)
1605 {
1606 irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend);
1607 if (irel == NULL)
1608 goto error_return;
1609 }
1610 else
1611 {
1612 if (!elf64_alpha_relax_without_lituse (&info, symval, irel))
1613 goto error_return;
1614 }
1615 }
1616
1617 if (!elf64_alpha_size_got_sections (abfd, link_info))
1618 return false;
1619
1620 if (info.changed_relocs)
1621 {
1622 elf_section_data (sec)->relocs = internal_relocs;
1623 }
1624 else if (free_relocs != NULL)
1625 {
1626 free (free_relocs);
1627 }
1628
1629 if (info.changed_contents)
1630 {
1631 elf_section_data (sec)->this_hdr.contents = info.contents;
1632 }
1633 else if (free_contents != NULL)
1634 {
1635 if (! link_info->keep_memory)
1636 free (free_contents);
1637 else
1638 {
1639 /* Cache the section contents for elf_link_input_bfd. */
1640 elf_section_data (sec)->this_hdr.contents = info.contents;
1641 }
1642 }
1643
1644 if (free_extsyms != NULL)
1645 {
1646 if (! link_info->keep_memory)
1647 free (free_extsyms);
1648 else
1649 {
1650 /* Cache the symbols for elf_link_input_bfd. */
1651 symtab_hdr->contents = extsyms;
1652 }
1653 }
1654
1655 *again = info.changed_contents || info.changed_relocs;
1656
1657 return true;
1658
1659 error_return:
1660 if (free_relocs != NULL)
1661 free (free_relocs);
1662 if (free_contents != NULL)
1663 free (free_contents);
1664 if (free_extsyms != NULL)
1665 free (free_extsyms);
1666 return false;
1667}
1668\f
1669/* PLT/GOT Stuff */
1670#define PLT_HEADER_SIZE 32
1671#define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */
1672#define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */
1673#define PLT_HEADER_WORD3 0x47ff041f /* nop */
1674#define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */
1675
1676#define PLT_ENTRY_SIZE 12
1677#define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */
1678#define PLT_ENTRY_WORD2 0
1679#define PLT_ENTRY_WORD3 0
1680
1681#define MAX_GOT_ENTRIES (64*1024 / 8)
1682
1683#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so"
1684\f
1685/* Handle an Alpha specific section when reading an object file. This
1686 is called when elfcode.h finds a section with an unknown type.
1687 FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure
1688 how to. */
1689
1690static boolean
1691elf64_alpha_section_from_shdr (abfd, hdr, name)
1692 bfd *abfd;
1693 Elf64_Internal_Shdr *hdr;
1694 char *name;
1695{
1696 asection *newsect;
1697
1698 /* There ought to be a place to keep ELF backend specific flags, but
1699 at the moment there isn't one. We just keep track of the
1700 sections by their name, instead. Fortunately, the ABI gives
1701 suggested names for all the MIPS specific sections, so we will
1702 probably get away with this. */
1703 switch (hdr->sh_type)
1704 {
1705 case SHT_ALPHA_DEBUG:
1706 if (strcmp (name, ".mdebug") != 0)
1707 return false;
1708 break;
1709#ifdef ERIC_neverdef
1710 case SHT_ALPHA_REGINFO:
1711 if (strcmp (name, ".reginfo") != 0
1712 || hdr->sh_size != sizeof (Elf64_External_RegInfo))
1713 return false;
1714 break;
1715#endif
1716 default:
1717 return false;
1718 }
1719
1720 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1721 return false;
1722 newsect = hdr->bfd_section;
1723
1724 if (hdr->sh_type == SHT_ALPHA_DEBUG)
1725 {
1726 if (! bfd_set_section_flags (abfd, newsect,
1727 (bfd_get_section_flags (abfd, newsect)
1728 | SEC_DEBUGGING)))
1729 return false;
1730 }
1731
1732#ifdef ERIC_neverdef
1733 /* For a .reginfo section, set the gp value in the tdata information
1734 from the contents of this section. We need the gp value while
1735 processing relocs, so we just get it now. */
1736 if (hdr->sh_type == SHT_ALPHA_REGINFO)
1737 {
1738 Elf64_External_RegInfo ext;
1739 Elf64_RegInfo s;
1740
1741 if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext,
1742 (file_ptr) 0, sizeof ext))
1743 return false;
1744 bfd_alpha_elf64_swap_reginfo_in (abfd, &ext, &s);
1745 elf_gp (abfd) = s.ri_gp_value;
1746 }
1747#endif
1748
1749 return true;
1750}
1751
1752/* Set the correct type for an Alpha ELF section. We do this by the
1753 section name, which is a hack, but ought to work. */
1754
1755static boolean
1756elf64_alpha_fake_sections (abfd, hdr, sec)
1757 bfd *abfd;
1758 Elf64_Internal_Shdr *hdr;
1759 asection *sec;
1760{
1761 register const char *name;
1762
1763 name = bfd_get_section_name (abfd, sec);
1764
1765 if (strcmp (name, ".mdebug") == 0)
1766 {
1767 hdr->sh_type = SHT_ALPHA_DEBUG;
1768 /* In a shared object on Irix 5.3, the .mdebug section has an
1769 entsize of 0. FIXME: Does this matter? */
1770 if ((abfd->flags & DYNAMIC) != 0 )
1771 hdr->sh_entsize = 0;
1772 else
1773 hdr->sh_entsize = 1;
1774 }
1775#ifdef ERIC_neverdef
1776 else if (strcmp (name, ".reginfo") == 0)
1777 {
1778 hdr->sh_type = SHT_ALPHA_REGINFO;
1779 /* In a shared object on Irix 5.3, the .reginfo section has an
1780 entsize of 0x18. FIXME: Does this matter? */
1781 if ((abfd->flags & DYNAMIC) != 0)
1782 hdr->sh_entsize = sizeof (Elf64_External_RegInfo);
1783 else
1784 hdr->sh_entsize = 1;
1785
1786 /* Force the section size to the correct value, even if the
1787 linker thinks it is larger. The link routine below will only
1788 write out this much data for .reginfo. */
1789 hdr->sh_size = sec->_raw_size = sizeof (Elf64_External_RegInfo);
1790 }
1791 else if (strcmp (name, ".hash") == 0
1792 || strcmp (name, ".dynamic") == 0
1793 || strcmp (name, ".dynstr") == 0)
1794 {
1795 hdr->sh_entsize = 0;
1796 hdr->sh_info = SIZEOF_ALPHA_DYNSYM_SECNAMES;
1797 }
1798#endif
1799 else if (strcmp (name, ".sdata") == 0
1800 || strcmp (name, ".sbss") == 0
1801 || strcmp (name, ".lit4") == 0
1802 || strcmp (name, ".lit8") == 0)
1803 hdr->sh_flags |= SHF_ALPHA_GPREL;
1804
1805 return true;
1806}
1807
1808/* Hook called by the linker routine which adds symbols from an object
1809 file. We use it to put .comm items in .sbss, and not .bss. */
1810
1811static boolean
1812elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1813 bfd *abfd;
1814 struct bfd_link_info *info;
1815 const Elf_Internal_Sym *sym;
1816 const char **namep;
1817 flagword *flagsp;
1818 asection **secp;
1819 bfd_vma *valp;
1820{
1821 if (sym->st_shndx == SHN_COMMON
1822 && !info->relocateable
1823 && sym->st_size <= bfd_get_gp_size (abfd))
1824 {
1825 /* Common symbols less than or equal to -G nn bytes are
1826 automatically put into .sbss. */
1827
1828 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1829
1830 if (scomm == NULL)
1831 {
1832 scomm = bfd_make_section (abfd, ".scommon");
1833 if (scomm == NULL
1834 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
1835 | SEC_IS_COMMON
1836 | SEC_LINKER_CREATED)))
1837 return false;
1838 }
1839
1840 *secp = scomm;
1841 *valp = sym->st_size;
1842 }
1843
1844 return true;
1845}
1846
1847/* Create the .got section. */
1848
1849static boolean
1850elf64_alpha_create_got_section(abfd, info)
1851 bfd *abfd;
1852 struct bfd_link_info *info;
1853{
1854 asection *s;
1855
1856 if (bfd_get_section_by_name (abfd, ".got"))
1857 return true;
1858
1859 s = bfd_make_section (abfd, ".got");
1860 if (s == NULL
1861 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1862 | SEC_HAS_CONTENTS
1863 | SEC_IN_MEMORY
1864 | SEC_LINKER_CREATED))
1865 || !bfd_set_section_alignment (abfd, s, 3))
1866 return false;
1867
1868 alpha_elf_tdata (abfd)->got = s;
1869
1870 return true;
1871}
1872
1873/* Create all the dynamic sections. */
1874
1875static boolean
1876elf64_alpha_create_dynamic_sections (abfd, info)
1877 bfd *abfd;
1878 struct bfd_link_info *info;
1879{
1880 asection *s;
1881 struct elf_link_hash_entry *h;
1882
1883 /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */
1884
1885 s = bfd_make_section (abfd, ".plt");
1886 if (s == NULL
1887 || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1888 | SEC_HAS_CONTENTS
1889 | SEC_IN_MEMORY
1890 | SEC_LINKER_CREATED
1891 | SEC_CODE))
1892 || ! bfd_set_section_alignment (abfd, s, 3))
1893 return false;
1894
1895 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1896 .plt section. */
1897 h = NULL;
1898 if (! (_bfd_generic_link_add_one_symbol
1899 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1900 (bfd_vma) 0, (const char *) NULL, false,
1901 get_elf_backend_data (abfd)->collect,
1902 (struct bfd_link_hash_entry **) &h)))
1903 return false;
1904 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
1905 h->type = STT_OBJECT;
1906
1907 if (info->shared
1908 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
1909 return false;
1910
1911 s = bfd_make_section (abfd, ".rela.plt");
1912 if (s == NULL
1913 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1914 | SEC_HAS_CONTENTS
1915 | SEC_IN_MEMORY
1916 | SEC_LINKER_CREATED
1917 | SEC_READONLY))
1918 || ! bfd_set_section_alignment (abfd, s, 3))
1919 return false;
1920
1921 /* We may or may not have created a .got section for this object, but
1922 we definitely havn't done the rest of the work. */
1923
1924 if (!elf64_alpha_create_got_section (abfd, info))
1925 return false;
1926
1927 s = bfd_make_section(abfd, ".rela.got");
1928 if (s == NULL
1929 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1930 | SEC_HAS_CONTENTS
1931 | SEC_IN_MEMORY
1932 | SEC_LINKER_CREATED
1933 | SEC_READONLY))
1934 || !bfd_set_section_alignment (abfd, s, 3))
1935 return false;
1936
1937 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
1938 dynobj's .got section. We don't do this in the linker script
1939 because we don't want to define the symbol if we are not creating
1940 a global offset table. */
1941 h = NULL;
1942 if (!(_bfd_generic_link_add_one_symbol
1943 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL,
1944 alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL,
1945 false, get_elf_backend_data (abfd)->collect,
1946 (struct bfd_link_hash_entry **) &h)))
1947 return false;
1948 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
1949 h->type = STT_OBJECT;
1950
1951 if (info->shared
1952 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
1953 return false;
1954
1955 elf_hash_table (info)->hgot = h;
1956
1957 return true;
1958}
1959\f
1960/* Read ECOFF debugging information from a .mdebug section into a
1961 ecoff_debug_info structure. */
1962
1963static boolean
1964elf64_alpha_read_ecoff_info (abfd, section, debug)
1965 bfd *abfd;
1966 asection *section;
1967 struct ecoff_debug_info *debug;
1968{
1969 HDRR *symhdr;
1970 const struct ecoff_debug_swap *swap;
1971 char *ext_hdr = NULL;
1972
1973 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
1974 memset (debug, 0, sizeof(*debug));
1975
1976 ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size);
1977 if (ext_hdr == NULL && swap->external_hdr_size != 0)
1978 goto error_return;
1979
1980 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
1981 swap->external_hdr_size)
1982 == false)
1983 goto error_return;
1984
1985 symhdr = &debug->symbolic_header;
1986 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
1987
1988 /* The symbolic header contains absolute file offsets and sizes to
1989 read. */
1990#define READ(ptr, offset, count, size, type) \
1991 if (symhdr->count == 0) \
1992 debug->ptr = NULL; \
1993 else \
1994 { \
1995 debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \
1996 if (debug->ptr == NULL) \
1997 goto error_return; \
1998 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
1999 || (bfd_read (debug->ptr, size, symhdr->count, \
2000 abfd) != size * symhdr->count)) \
2001 goto error_return; \
2002 }
2003
2004 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
2005 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
2006 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
2007 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
2008 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
2009 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
2010 union aux_ext *);
2011 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
2012 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
2013 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
2014 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
2015 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
2016#undef READ
2017
2018 debug->fdr = NULL;
2019 debug->adjust = NULL;
2020
2021 return true;
2022
2023 error_return:
2024 if (ext_hdr != NULL)
2025 free (ext_hdr);
2026 if (debug->line != NULL)
2027 free (debug->line);
2028 if (debug->external_dnr != NULL)
2029 free (debug->external_dnr);
2030 if (debug->external_pdr != NULL)
2031 free (debug->external_pdr);
2032 if (debug->external_sym != NULL)
2033 free (debug->external_sym);
2034 if (debug->external_opt != NULL)
2035 free (debug->external_opt);
2036 if (debug->external_aux != NULL)
2037 free (debug->external_aux);
2038 if (debug->ss != NULL)
2039 free (debug->ss);
2040 if (debug->ssext != NULL)
2041 free (debug->ssext);
2042 if (debug->external_fdr != NULL)
2043 free (debug->external_fdr);
2044 if (debug->external_rfd != NULL)
2045 free (debug->external_rfd);
2046 if (debug->external_ext != NULL)
2047 free (debug->external_ext);
2048 return false;
2049}
2050
2051/* Alpha ELF local labels start with '$'. */
2052
2053static boolean
2054elf64_alpha_is_local_label_name (abfd, name)
2055 bfd *abfd;
2056 const char *name;
2057{
2058 return name[0] == '$';
2059}
2060
2061/* Alpha ELF follows MIPS ELF in using a special find_nearest_line
2062 routine in order to handle the ECOFF debugging information. We
2063 still call this mips_elf_find_line because of the slot
2064 find_line_info in elf_obj_tdata is declared that way. */
2065
2066struct mips_elf_find_line
2067{
2068 struct ecoff_debug_info d;
2069 struct ecoff_find_line i;
2070};
2071
2072static boolean
2073elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
2074 functionname_ptr, line_ptr)
2075 bfd *abfd;
2076 asection *section;
2077 asymbol **symbols;
2078 bfd_vma offset;
2079 const char **filename_ptr;
2080 const char **functionname_ptr;
2081 unsigned int *line_ptr;
2082{
2083 asection *msec;
2084
2085 msec = bfd_get_section_by_name (abfd, ".mdebug");
2086 if (msec != NULL)
2087 {
2088 flagword origflags;
2089 struct mips_elf_find_line *fi;
2090 const struct ecoff_debug_swap * const swap =
2091 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
2092
2093 /* If we are called during a link, alpha_elf_final_link may have
2094 cleared the SEC_HAS_CONTENTS field. We force it back on here
2095 if appropriate (which it normally will be). */
2096 origflags = msec->flags;
2097 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
2098 msec->flags |= SEC_HAS_CONTENTS;
2099
2100 fi = elf_tdata (abfd)->find_line_info;
2101 if (fi == NULL)
2102 {
2103 bfd_size_type external_fdr_size;
2104 char *fraw_src;
2105 char *fraw_end;
2106 struct fdr *fdr_ptr;
2107
2108 fi = ((struct mips_elf_find_line *)
2109 bfd_zalloc (abfd, sizeof (struct mips_elf_find_line)));
2110 if (fi == NULL)
2111 {
2112 msec->flags = origflags;
2113 return false;
2114 }
2115
2116 if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d))
2117 {
2118 msec->flags = origflags;
2119 return false;
2120 }
2121
2122 /* Swap in the FDR information. */
2123 fi->d.fdr = ((struct fdr *)
2124 bfd_alloc (abfd,
2125 (fi->d.symbolic_header.ifdMax *
2126 sizeof (struct fdr))));
2127 if (fi->d.fdr == NULL)
2128 {
2129 msec->flags = origflags;
2130 return false;
2131 }
2132 external_fdr_size = swap->external_fdr_size;
2133 fdr_ptr = fi->d.fdr;
2134 fraw_src = (char *) fi->d.external_fdr;
2135 fraw_end = (fraw_src
2136 + fi->d.symbolic_header.ifdMax * external_fdr_size);
2137 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
2138 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
2139
2140 elf_tdata (abfd)->find_line_info = fi;
2141
2142 /* Note that we don't bother to ever free this information.
2143 find_nearest_line is either called all the time, as in
2144 objdump -l, so the information should be saved, or it is
2145 rarely called, as in ld error messages, so the memory
2146 wasted is unimportant. Still, it would probably be a
2147 good idea for free_cached_info to throw it away. */
2148 }
2149
2150 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
2151 &fi->i, filename_ptr, functionname_ptr,
2152 line_ptr))
2153 {
2154 msec->flags = origflags;
2155 return true;
2156 }
2157
2158 msec->flags = origflags;
2159 }
2160
2161 /* Fall back on the generic ELF find_nearest_line routine. */
2162
2163 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
2164 filename_ptr, functionname_ptr,
2165 line_ptr);
2166}
2167\f
2168/* Structure used to pass information to alpha_elf_output_extsym. */
2169
2170struct extsym_info
2171{
2172 bfd *abfd;
2173 struct bfd_link_info *info;
2174 struct ecoff_debug_info *debug;
2175 const struct ecoff_debug_swap *swap;
2176 boolean failed;
2177};
2178
2179static boolean
2180elf64_alpha_output_extsym (h, data)
2181 struct alpha_elf_link_hash_entry *h;
2182 PTR data;
2183{
2184 struct extsym_info *einfo = (struct extsym_info *) data;
2185 boolean strip;
2186 asection *sec, *output_section;
2187
2188 if (h->root.indx == -2)
2189 strip = false;
2190 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2191 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
2192 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
2193 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
2194 strip = true;
2195 else if (einfo->info->strip == strip_all
2196 || (einfo->info->strip == strip_some
2197 && bfd_hash_lookup (einfo->info->keep_hash,
2198 h->root.root.root.string,
2199 false, false) == NULL))
2200 strip = true;
2201 else
2202 strip = false;
2203
2204 if (strip)
2205 return true;
2206
2207 if (h->esym.ifd == -2)
2208 {
2209 h->esym.jmptbl = 0;
2210 h->esym.cobol_main = 0;
2211 h->esym.weakext = 0;
2212 h->esym.reserved = 0;
2213 h->esym.ifd = ifdNil;
2214 h->esym.asym.value = 0;
2215 h->esym.asym.st = stGlobal;
2216
2217 if (h->root.root.type != bfd_link_hash_defined
2218 && h->root.root.type != bfd_link_hash_defweak)
2219 h->esym.asym.sc = scAbs;
2220 else
2221 {
2222 const char *name;
2223
2224 sec = h->root.root.u.def.section;
2225 output_section = sec->output_section;
2226
2227 /* When making a shared library and symbol h is the one from
2228 the another shared library, OUTPUT_SECTION may be null. */
2229 if (output_section == NULL)
2230 h->esym.asym.sc = scUndefined;
2231 else
2232 {
2233 name = bfd_section_name (output_section->owner, output_section);
2234
2235 if (strcmp (name, ".text") == 0)
2236 h->esym.asym.sc = scText;
2237 else if (strcmp (name, ".data") == 0)
2238 h->esym.asym.sc = scData;
2239 else if (strcmp (name, ".sdata") == 0)
2240 h->esym.asym.sc = scSData;
2241 else if (strcmp (name, ".rodata") == 0
2242 || strcmp (name, ".rdata") == 0)
2243 h->esym.asym.sc = scRData;
2244 else if (strcmp (name, ".bss") == 0)
2245 h->esym.asym.sc = scBss;
2246 else if (strcmp (name, ".sbss") == 0)
2247 h->esym.asym.sc = scSBss;
2248 else if (strcmp (name, ".init") == 0)
2249 h->esym.asym.sc = scInit;
2250 else if (strcmp (name, ".fini") == 0)
2251 h->esym.asym.sc = scFini;
2252 else
2253 h->esym.asym.sc = scAbs;
2254 }
2255 }
2256
2257 h->esym.asym.reserved = 0;
2258 h->esym.asym.index = indexNil;
2259 }
2260
2261 if (h->root.root.type == bfd_link_hash_common)
2262 h->esym.asym.value = h->root.root.u.c.size;
2263 else if (h->root.root.type == bfd_link_hash_defined
2264 || h->root.root.type == bfd_link_hash_defweak)
2265 {
2266 if (h->esym.asym.sc == scCommon)
2267 h->esym.asym.sc = scBss;
2268 else if (h->esym.asym.sc == scSCommon)
2269 h->esym.asym.sc = scSBss;
2270
2271 sec = h->root.root.u.def.section;
2272 output_section = sec->output_section;
2273 if (output_section != NULL)
2274 h->esym.asym.value = (h->root.root.u.def.value
2275 + sec->output_offset
2276 + output_section->vma);
2277 else
2278 h->esym.asym.value = 0;
2279 }
2280 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2281 {
2282 /* Set type and value for a symbol with a function stub. */
2283 h->esym.asym.st = stProc;
2284 sec = bfd_get_section_by_name (einfo->abfd, ".plt");
2285 if (sec == NULL)
2286 h->esym.asym.value = 0;
2287 else
2288 {
2289 output_section = sec->output_section;
2290 if (output_section != NULL)
2291 h->esym.asym.value = (h->root.plt.offset
2292 + sec->output_offset
2293 + output_section->vma);
2294 else
2295 h->esym.asym.value = 0;
2296 }
2297#if 0 /* FIXME? */
2298 h->esym.ifd = 0;
2299#endif
2300 }
2301
2302 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
2303 h->root.root.root.string,
2304 &h->esym))
2305 {
2306 einfo->failed = true;
2307 return false;
2308 }
2309
2310 return true;
2311}
2312
2313/* FIXME: Create a runtime procedure table from the .mdebug section.
2314
2315static boolean
2316mips_elf_create_procedure_table (handle, abfd, info, s, debug)
2317 PTR handle;
2318 bfd *abfd;
2319 struct bfd_link_info *info;
2320 asection *s;
2321 struct ecoff_debug_info *debug;
2322*/
2323\f
2324/* Handle dynamic relocations when doing an Alpha ELF link. */
2325
2326static boolean
2327elf64_alpha_check_relocs (abfd, info, sec, relocs)
2328 bfd *abfd;
2329 struct bfd_link_info *info;
2330 asection *sec;
2331 const Elf_Internal_Rela *relocs;
2332{
2333 bfd *dynobj;
2334 asection *sreloc;
2335 const char *rel_sec_name;
2336 Elf_Internal_Shdr *symtab_hdr;
2337 struct alpha_elf_link_hash_entry **sym_hashes;
2338 struct alpha_elf_got_entry **local_got_entries;
2339 const Elf_Internal_Rela *rel, *relend;
2340 int got_created;
2341
2342 if (info->relocateable)
2343 return true;
2344
2345 dynobj = elf_hash_table(info)->dynobj;
2346 if (dynobj == NULL)
2347 elf_hash_table(info)->dynobj = dynobj = abfd;
2348
2349 sreloc = NULL;
2350 rel_sec_name = NULL;
2351 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
2352 sym_hashes = alpha_elf_sym_hashes(abfd);
2353 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
2354 got_created = 0;
2355
2356 relend = relocs + sec->reloc_count;
2357 for (rel = relocs; rel < relend; ++rel)
2358 {
2359 unsigned long r_symndx, r_type;
2360 struct alpha_elf_link_hash_entry *h;
2361
2362 r_symndx = ELF64_R_SYM (rel->r_info);
2363 if (r_symndx < symtab_hdr->sh_info)
2364 h = NULL;
2365 else
2366 {
2367 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2368
2369 while (h->root.root.type == bfd_link_hash_indirect
2370 || h->root.root.type == bfd_link_hash_warning)
2371 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2372
2373 h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
2374 }
2375 r_type = ELF64_R_TYPE (rel->r_info);
2376
2377 switch (r_type)
2378 {
2379 case R_ALPHA_LITERAL:
2380 {
2381 struct alpha_elf_got_entry *gotent;
2382 int flags = 0;
2383
2384 if (h)
2385 {
2386 /* Search for and possibly create a got entry. */
2387 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
2388 if (gotent->gotobj == abfd &&
2389 gotent->addend == rel->r_addend)
2390 break;
2391
2392 if (!gotent)
2393 {
2394 gotent = ((struct alpha_elf_got_entry *)
2395 bfd_alloc (abfd,
2396 sizeof (struct alpha_elf_got_entry)));
2397 if (!gotent)
2398 return false;
2399
2400 gotent->gotobj = abfd;
2401 gotent->addend = rel->r_addend;
2402 gotent->got_offset = -1;
2403 gotent->flags = 0;
2404 gotent->use_count = 1;
2405
2406 gotent->next = h->got_entries;
2407 h->got_entries = gotent;
2408
2409 alpha_elf_tdata (abfd)->total_got_entries++;
2410 }
2411 else
2412 gotent->use_count += 1;
2413 }
2414 else
2415 {
2416 /* This is a local .got entry -- record for merge. */
2417 if (!local_got_entries)
2418 {
2419 size_t size;
2420 size = (symtab_hdr->sh_info
2421 * sizeof (struct alpha_elf_got_entry *));
2422
2423 local_got_entries = ((struct alpha_elf_got_entry **)
2424 bfd_alloc (abfd, size));
2425 if (!local_got_entries)
2426 return false;
2427
2428 memset (local_got_entries, 0, size);
2429 alpha_elf_tdata (abfd)->local_got_entries =
2430 local_got_entries;
2431 }
2432
2433 for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)];
2434 gotent != NULL && gotent->addend != rel->r_addend;
2435 gotent = gotent->next)
2436 continue;
2437 if (!gotent)
2438 {
2439 gotent = ((struct alpha_elf_got_entry *)
2440 bfd_alloc (abfd,
2441 sizeof (struct alpha_elf_got_entry)));
2442 if (!gotent)
2443 return false;
2444
2445 gotent->gotobj = abfd;
2446 gotent->addend = rel->r_addend;
2447 gotent->got_offset = -1;
2448 gotent->flags = 0;
2449 gotent->use_count = 1;
2450
2451 gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)];
2452 local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent;
2453
2454 alpha_elf_tdata(abfd)->total_got_entries++;
2455 alpha_elf_tdata(abfd)->n_local_got_entries++;
2456 }
2457 else
2458 gotent->use_count += 1;
2459 }
2460
2461 /* Remember how this literal is used from its LITUSEs.
2462 This will be important when it comes to decide if we can
2463 create a .plt entry for a function symbol. */
2464 if (rel+1 < relend
2465 && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE)
2466 {
2467 do
2468 {
2469 ++rel;
2470 if (rel->r_addend >= 1 && rel->r_addend <= 3)
2471 flags |= 1 << rel->r_addend;
2472 }
2473 while (rel+1 < relend &&
2474 ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE);
2475 }
2476 else
2477 {
2478 /* No LITUSEs -- presumably the address is not being
2479 loaded for nothing. */
2480 flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
2481 }
2482
2483 gotent->flags |= flags;
2484 if (h)
2485 {
2486 /* Make a guess as to whether a .plt entry will be needed. */
2487 if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC)
2488 h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2489 else
2490 h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2491 }
2492 }
2493 /* FALLTHRU */
2494
2495 case R_ALPHA_GPDISP:
2496 case R_ALPHA_GPREL32:
2497 case R_ALPHA_GPRELHIGH:
2498 case R_ALPHA_GPRELLOW:
2499 /* We don't actually use the .got here, but the sections must
2500 be created before the linker maps input sections to output
2501 sections. */
2502 if (!got_created)
2503 {
2504 if (!elf64_alpha_create_got_section (abfd, info))
2505 return false;
2506
2507 /* Make sure the object's gotobj is set to itself so
2508 that we default to every object with its own .got.
2509 We'll merge .gots later once we've collected each
2510 object's info. */
2511 alpha_elf_tdata(abfd)->gotobj = abfd;
2512
2513 got_created = 1;
2514 }
2515 break;
2516
2517 case R_ALPHA_SREL16:
2518 case R_ALPHA_SREL32:
2519 case R_ALPHA_SREL64:
2520 if (h == NULL)
2521 break;
2522 /* FALLTHRU */
2523
2524 case R_ALPHA_REFLONG:
2525 case R_ALPHA_REFQUAD:
2526 if (rel_sec_name == NULL)
2527 {
2528 rel_sec_name = (bfd_elf_string_from_elf_section
2529 (abfd, elf_elfheader(abfd)->e_shstrndx,
2530 elf_section_data(sec)->rel_hdr.sh_name));
2531 if (rel_sec_name == NULL)
2532 return false;
2533
2534 BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0
2535 && strcmp (bfd_get_section_name (abfd, sec),
2536 rel_sec_name+5) == 0);
2537 }
2538
2539 /* We need to create the section here now whether we eventually
2540 use it or not so that it gets mapped to an output section by
2541 the linker. If not used, we'll kill it in
2542 size_dynamic_sections. */
2543 if (sreloc == NULL)
2544 {
2545 sreloc = bfd_get_section_by_name (dynobj, rel_sec_name);
2546 if (sreloc == NULL)
2547 {
2548 sreloc = bfd_make_section (dynobj, rel_sec_name);
2549 if (sreloc == NULL
2550 || !bfd_set_section_flags (dynobj, sreloc,
2551 (SEC_ALLOC|SEC_LOAD
2552 | SEC_HAS_CONTENTS
2553 | SEC_IN_MEMORY
2554 | SEC_LINKER_CREATED
2555 | SEC_READONLY))
2556 || !bfd_set_section_alignment (dynobj, sreloc, 3))
2557 return false;
2558 }
2559 }
2560
2561 if (h)
2562 {
2563 /* Since we havn't seen all of the input symbols yet, we
2564 don't know whether we'll actually need a dynamic relocation
2565 entry for this reloc. So make a record of it. Once we
2566 find out if this thing needs dynamic relocation we'll
2567 expand the relocation sections by the appropriate amount. */
2568
2569 struct alpha_elf_reloc_entry *rent;
2570
2571 for (rent = h->reloc_entries; rent; rent = rent->next)
2572 if (rent->rtype == r_type && rent->srel == sreloc)
2573 break;
2574
2575 if (!rent)
2576 {
2577 rent = ((struct alpha_elf_reloc_entry *)
2578 bfd_alloc (abfd,
2579 sizeof (struct alpha_elf_reloc_entry)));
2580 if (!rent)
2581 return false;
2582
2583 rent->srel = sreloc;
2584 rent->rtype = r_type;
2585 rent->count = 1;
2586
2587 rent->next = h->reloc_entries;
2588 h->reloc_entries = rent;
2589 }
2590 else
2591 rent->count++;
2592 }
c555c5c5 2593 else if (info->shared && (sec->flags & SEC_ALLOC))
252b5132 2594 {
c555c5c5
AM		 2595 /* If this is a shared library, and the section is to be
2596 loaded into memory, we need a RELATIVE reloc. */
252b5132
RH		 2597 sreloc->_raw_size += sizeof (Elf64_External_Rela);
2598 }
2599 break;
2600 }
2601 }
2602
2603 return true;
2604}
2605
2606/* Adjust a symbol defined by a dynamic object and referenced by a
2607 regular object. The current definition is in some section of the
2608 dynamic object, but we're not including those sections. We have to
2609 change the definition to something the rest of the link can
2610 understand. */
2611
2612static boolean
2613elf64_alpha_adjust_dynamic_symbol (info, h)
2614 struct bfd_link_info *info;
2615 struct elf_link_hash_entry *h;
2616{
2617 bfd *dynobj;
2618 asection *s;
2619 struct alpha_elf_link_hash_entry *ah;
2620
2621 dynobj = elf_hash_table(info)->dynobj;
2622 ah = (struct alpha_elf_link_hash_entry *)h;
2623
2624 /* Now that we've seen all of the input symbols, finalize our decision
2625 about whether this symbol should get a .plt entry. */
2626
2627 if (h->root.type != bfd_link_hash_undefweak
2628 && alpha_elf_dynamic_symbol_p (h, info)
2629 && ((h->type == STT_FUNC
2630 && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR))
2631 || (h->type == STT_NOTYPE
2632 && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC))
2633 /* Don't prevent otherwise valid programs from linking by attempting
2634 to create a new .got entry somewhere. A Correct Solution would be
2635 to add a new .got section to a new object file and let it be merged
2636 somewhere later. But for now don't bother. */
2637 && ah->got_entries)
2638 {
2639 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2640
2641 s = bfd_get_section_by_name(dynobj, ".plt");
2642 if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
2643 return false;
2644
2645 /* The first bit of the .plt is reserved. */
2646 if (s->_raw_size == 0)
2647 s->_raw_size = PLT_HEADER_SIZE;
2648
2649 h->plt.offset = s->_raw_size;
2650 s->_raw_size += PLT_ENTRY_SIZE;
2651
2652 /* If this symbol is not defined in a regular file, and we are not
2653 generating a shared library, then set the symbol to the location
2654 in the .plt. This is required to make function pointers compare
2655 equal between the normal executable and the shared library. */
2656 if (! info->shared
2657 && h->root.type != bfd_link_hash_defweak)
2658 {
2659 h->root.u.def.section = s;
2660 h->root.u.def.value = h->plt.offset;
2661 }
2662
2663 /* We also need a JMP_SLOT entry in the .rela.plt section. */
2664 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2665 BFD_ASSERT (s != NULL);
2666 s->_raw_size += sizeof (Elf64_External_Rela);
2667
2668 return true;
2669 }
2670 else
2671 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2672
2673 /* If this is a weak symbol, and there is a real definition, the
2674 processor independent code will have arranged for us to see the
2675 real definition first, and we can just use the same value. */
2676 if (h->weakdef != NULL)
2677 {
2678 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2679 || h->weakdef->root.type == bfd_link_hash_defweak);
2680 h->root.u.def.section = h->weakdef->root.u.def.section;
2681 h->root.u.def.value = h->weakdef->root.u.def.value;
2682 return true;
2683 }
2684
2685 /* This is a reference to a symbol defined by a dynamic object which
2686 is not a function. The Alpha, since it uses .got entries for all
2687 symbols even in regular objects, does not need the hackery of a
2688 .dynbss section and COPY dynamic relocations. */
2689
2690 return true;
2691}
2692
2693/* Symbol versioning can create new symbols, and make our old symbols
2694 indirect to the new ones. Consolidate the got and reloc information
2695 in these situations. */
2696
2697static boolean
2698elf64_alpha_merge_ind_symbols (hi, dummy)
2699 struct alpha_elf_link_hash_entry *hi;
2700 PTR dummy;
2701{
2702 struct alpha_elf_link_hash_entry *hs;
2703
2704 if (hi->root.root.type != bfd_link_hash_indirect)
2705 return true;
2706 hs = hi;
2707 do {
2708 hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link;
2709 } while (hs->root.root.type == bfd_link_hash_indirect);
2710
2711 /* Merge the flags. Whee. */
2712
2713 hs->flags |= hi->flags;
2714
2715 /* Merge the .got entries. Cannibalize the old symbol's list in
2716 doing so, since we don't need it anymore. */
2717
2718 if (hs->got_entries == NULL)
2719 hs->got_entries = hi->got_entries;
2720 else
2721 {
2722 struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
2723
2724 gsh = hs->got_entries;
2725 for (gi = hi->got_entries; gi ; gi = gin)
2726 {
2727 gin = gi->next;
2728 for (gs = gsh; gs ; gs = gs->next)
2729 if (gi->gotobj == gs->gotobj && gi->addend == gs->addend)
2730 goto got_found;
2731 gi->next = hs->got_entries;
2732 hs->got_entries = gi;
2733 got_found:;
2734 }
2735 }
2736 hi->got_entries = NULL;
2737
2738 /* And similar for the reloc entries. */
2739
2740 if (hs->reloc_entries == NULL)
2741 hs->reloc_entries = hi->reloc_entries;
2742 else
2743 {
2744 struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
2745
2746 rsh = hs->reloc_entries;
2747 for (ri = hi->reloc_entries; ri ; ri = rin)
2748 {
2749 rin = ri->next;
2750 for (rs = rsh; rs ; rs = rs->next)
2751 if (ri->rtype == rs->rtype)
2752 {
2753 rs->count += ri->count;
2754 goto found_reloc;
2755 }
2756 ri->next = hs->reloc_entries;
2757 hs->reloc_entries = ri;
2758 found_reloc:;
2759 }
2760 }
2761 hi->reloc_entries = NULL;
2762
2763 return true;
2764}
2765
2766/* Is it possible to merge two object file's .got tables? */
2767
2768static boolean
2769elf64_alpha_can_merge_gots (a, b)
2770 bfd *a, *b;
2771{
2772 int total = alpha_elf_tdata (a)->total_got_entries;
2773 bfd *bsub;
2774
2775 /* Trivial quick fallout test. */
2776 if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES)
2777 return true;
2778
2779 /* By their nature, local .got entries cannot be merged. */
2780 if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES)
2781 return false;
2782
2783 /* Failing the common trivial comparison, we must effectively
2784 perform the merge. Not actually performing the merge means that
2785 we don't have to store undo information in case we fail. */
2786 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
2787 {
2788 struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub);
2789 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
2790 int i, n;
2791
2792 n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info;
2793 for (i = 0; i < n; ++i)
2794 {
2795 struct alpha_elf_got_entry *ae, *be;
2796 struct alpha_elf_link_hash_entry *h;
2797
2798 h = hashes[i];
2799 while (h->root.root.type == bfd_link_hash_indirect
2800 || h->root.root.type == bfd_link_hash_warning)
2801 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2802
2803 for (be = h->got_entries; be ; be = be->next)
2804 {
2805 if (be->use_count == 0)
2806 continue;
2807 if (be->gotobj != b)
2808 continue;
2809
2810 for (ae = h->got_entries; ae ; ae = ae->next)
2811 if (ae->gotobj == a && ae->addend == be->addend)
2812 goto global_found;
2813
2814 if (++total > MAX_GOT_ENTRIES)
2815 return false;
2816 global_found:;
2817 }
2818 }
2819 }
2820
2821 return true;
2822}
2823
2824/* Actually merge two .got tables. */
2825
2826static void
2827elf64_alpha_merge_gots (a, b)
2828 bfd *a, *b;
2829{
2830 int total = alpha_elf_tdata (a)->total_got_entries;
2831 bfd *bsub;
2832
2833 /* Remember local expansion. */
2834 {
2835 int e = alpha_elf_tdata (b)->n_local_got_entries;
2836 total += e;
2837 alpha_elf_tdata (a)->n_local_got_entries += e;
2838 }
2839
2840 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
2841 {
2842 struct alpha_elf_got_entry **local_got_entries;
2843 struct alpha_elf_link_hash_entry **hashes;
2844 Elf_Internal_Shdr *symtab_hdr;
2845 int i, n;
2846
2847 /* Let the local .got entries know they are part of a new subsegment. */
2848 local_got_entries = alpha_elf_tdata (bsub)->local_got_entries;
2849 if (local_got_entries)
2850 {
2851 n = elf_tdata (bsub)->symtab_hdr.sh_info;
2852 for (i = 0; i < n; ++i)
2853 {
2854 struct alpha_elf_got_entry *ent;
2855 for (ent = local_got_entries[i]; ent; ent = ent->next)
2856 ent->gotobj = a;
2857 }
2858 }
2859
2860 /* Merge the global .got entries. */
2861 hashes = alpha_elf_sym_hashes (bsub);
2862 symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
2863
2864 n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info;
2865 for (i = 0; i < n; ++i)
2866 {
2867 struct alpha_elf_got_entry *ae, *be, **pbe, **start;
2868 struct alpha_elf_link_hash_entry *h;
2869
2870 h = hashes[i];
2871 while (h->root.root.type == bfd_link_hash_indirect
2872 || h->root.root.type == bfd_link_hash_warning)
2873 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2874
2875 start = &h->got_entries;
2876 for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next)
2877 {
2878 if (be->use_count == 0)
2879 {
2880 *pbe = be->next;
2881 continue;
2882 }
2883 if (be->gotobj != b)
2884 continue;
2885
2886 for (ae = *start; ae ; ae = ae->next)
2887 if (ae->gotobj == a && ae->addend == be->addend)
2888 {
2889 ae->flags |= be->flags;
2890 ae->use_count += be->use_count;
2891 *pbe = be->next;
2892 goto global_found;
2893 }
2894 be->gotobj = a;
2895 total += 1;
2896
2897 global_found:;
2898 }
2899 }
2900
2901 alpha_elf_tdata (bsub)->gotobj = a;
2902 }
2903 alpha_elf_tdata (a)->total_got_entries = total;
2904
2905 /* Merge the two in_got chains. */
2906 {
2907 bfd *next;
2908
2909 bsub = a;
2910 while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL)
2911 bsub = next;
2912
2913 alpha_elf_tdata (bsub)->in_got_link_next = b;
2914 }
2915}
2916
2917/* Calculate the offsets for the got entries. */
2918
2919static boolean
2920elf64_alpha_calc_got_offsets_for_symbol (h, arg)
2921 struct alpha_elf_link_hash_entry *h;
2922 PTR arg;
2923{
2924 struct alpha_elf_got_entry *gotent;
2925
2926 for (gotent = h->got_entries; gotent; gotent = gotent->next)
2927 if (gotent->use_count > 0)
2928 {
2929 bfd_size_type *plge
2930 = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size;
2931
2932 gotent->got_offset = *plge;
2933 *plge += 8;
2934 }
2935
2936 return true;
2937}
2938
2939static void
2940elf64_alpha_calc_got_offsets (info)
2941 struct bfd_link_info *info;
2942{
2943 bfd *i, *got_list = alpha_elf_hash_table(info)->got_list;
2944
2945 /* First, zero out the .got sizes, as we may be recalculating the
2946 .got after optimizing it. */
2947 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
2948 alpha_elf_tdata(i)->got->_raw_size = 0;
2949
2950 /* Next, fill in the offsets for all the global entries. */
2951 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
2952 elf64_alpha_calc_got_offsets_for_symbol,
2953 NULL);
2954
2955 /* Finally, fill in the offsets for the local entries. */
2956 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
2957 {
2958 bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size;
2959 bfd *j;
2960
2961 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
2962 {
2963 struct alpha_elf_got_entry **local_got_entries, *gotent;
2964 int k, n;
2965
2966 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
2967 if (!local_got_entries)
2968 continue;
2969
2970 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
2971 for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
2972 if (gotent->use_count > 0)
2973 {
2974 gotent->got_offset = got_offset;
2975 got_offset += 8;
2976 }
2977 }
2978
2979 alpha_elf_tdata(i)->got->_raw_size = got_offset;
2980 alpha_elf_tdata(i)->got->_cooked_size = got_offset;
2981 }
2982}
2983
2984/* Constructs the gots. */
2985
2986static boolean
2987elf64_alpha_size_got_sections (output_bfd, info)
2988 bfd *output_bfd;
2989 struct bfd_link_info *info;
2990{
2991 bfd *i, *got_list, *cur_got_obj;
2992 int something_changed = 0;
2993
2994 got_list = alpha_elf_hash_table (info)->got_list;
2995
2996 /* On the first time through, pretend we have an existing got list
2997 consisting of all of the input files. */
2998 if (got_list == NULL)
2999 {
3000 for (i = info->input_bfds; i ; i = i->link_next)
3001 {
3002 bfd *this_got = alpha_elf_tdata (i)->gotobj;
3003 if (this_got == NULL)
3004 continue;
3005
3006 /* We are assuming no merging has yet ocurred. */
3007 BFD_ASSERT (this_got == i);
3008
3009 if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES)
3010 {
3011 /* Yikes! A single object file has too many entries. */
3012 (*_bfd_error_handler)
3013 (_("%s: .got subsegment exceeds 64K (size %d)"),
3014 bfd_get_filename (i),
3015 alpha_elf_tdata (this_got)->total_got_entries * 8);
3016 return false;
3017 }
3018
3019 if (got_list == NULL)
3020 got_list = this_got;
3021 else
3022 alpha_elf_tdata(cur_got_obj)->got_link_next = this_got;
3023 cur_got_obj = this_got;
3024 }
3025
3026 /* Strange degenerate case of no got references. */
3027 if (got_list == NULL)
3028 return true;
3029
3030 alpha_elf_hash_table (info)->got_list = got_list;
3031
3032 /* Force got offsets to be recalculated. */
3033 something_changed = 1;
3034 }
3035
3036 cur_got_obj = got_list;
3037 i = alpha_elf_tdata(cur_got_obj)->got_link_next;
3038 while (i != NULL)
3039 {
3040 if (elf64_alpha_can_merge_gots (cur_got_obj, i))
3041 {
3042 elf64_alpha_merge_gots (cur_got_obj, i);
3043 i = alpha_elf_tdata(i)->got_link_next;
3044 alpha_elf_tdata(cur_got_obj)->got_link_next = i;
3045 something_changed = 1;
3046 }
3047 else
3048 {
3049 cur_got_obj = i;
3050 i = alpha_elf_tdata(i)->got_link_next;
3051 }
3052 }
3053
3054 /* Once the gots have been merged, fill in the got offsets for
3055 everything therein. */
3056 if (1 || something_changed)
3057 elf64_alpha_calc_got_offsets (info);
3058
3059 return true;
3060}
3061
3062static boolean
3063elf64_alpha_always_size_sections (output_bfd, info)
3064 bfd *output_bfd;
3065 struct bfd_link_info *info;
3066{
3067 bfd *i;
3068
3069 if (info->relocateable)
3070 return true;
3071
3072 /* First, take care of the indirect symbols created by versioning. */
3073 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3074 elf64_alpha_merge_ind_symbols,
3075 NULL);
3076
3077 if (!elf64_alpha_size_got_sections (output_bfd, info))
3078 return false;
3079
3080 /* Allocate space for all of the .got subsections. */
3081 i = alpha_elf_hash_table (info)->got_list;
3082 for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
3083 {
3084 asection *s = alpha_elf_tdata(i)->got;
3085 if (s->_raw_size > 0)
3086 {
3087 s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size);
3088 if (s->contents == NULL)
3089 return false;
3090 }
3091 }
3092
3093 return true;
3094}
3095
3096/* Work out the sizes of the dynamic relocation entries. */
3097
3098static boolean
3099elf64_alpha_calc_dynrel_sizes (h, info)
3100 struct alpha_elf_link_hash_entry *h;
3101 struct bfd_link_info *info;
3102{
3103 /* If the symbol was defined as a common symbol in a regular object
3104 file, and there was no definition in any dynamic object, then the
3105 linker will have allocated space for the symbol in a common
3106 section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
3107 set. This is done for dynamic symbols in
3108 elf_adjust_dynamic_symbol but this is not done for non-dynamic
3109 symbols, somehow. */
3110 if (((h->root.elf_link_hash_flags
3111 & (ELF_LINK_HASH_DEF_REGULAR
3112 | ELF_LINK_HASH_REF_REGULAR
3113 | ELF_LINK_HASH_DEF_DYNAMIC))
3114 == ELF_LINK_HASH_REF_REGULAR)
3115 && (h->root.root.type == bfd_link_hash_defined
3116 || h->root.root.type == bfd_link_hash_defweak)
3117 && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
3118 {
3119 h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3120 }
3121
3122 /* If the symbol is dynamic, we'll need all the relocations in their
3123 natural form. If this is a shared object, and it has been forced
3124 local, we'll need the same number of RELATIVE relocations. */
3125
3126 if (alpha_elf_dynamic_symbol_p (&h->root, info) || info->shared)
3127 {
3128 struct alpha_elf_reloc_entry *relent;
3129 bfd *dynobj;
3130 struct alpha_elf_got_entry *gotent;
3131 bfd_size_type count;
3132 asection *srel;
3133
3134 for (relent = h->reloc_entries; relent; relent = relent->next)
3135 if (relent->rtype == R_ALPHA_REFLONG
3136 || relent->rtype == R_ALPHA_REFQUAD)
3137 {
3138 relent->srel->_raw_size +=
3139 sizeof(Elf64_External_Rela) * relent->count;
3140 }
3141
3142 dynobj = elf_hash_table(info)->dynobj;
3143 count = 0;
3144
3145 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
3146 count++;
3147
3148 /* If we are using a .plt entry, subtract one, as the first
3149 reference uses a .rela.plt entry instead. */
3150 if (h->root.plt.offset != MINUS_ONE)
3151 count--;
3152
3153 if (count > 0)
3154 {
3155 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3156 BFD_ASSERT (srel != NULL);
3157 srel->_raw_size += sizeof (Elf64_External_Rela) * count;
3158 }
3159 }
3160
3161 return true;
3162}
3163
3164/* Set the sizes of the dynamic sections. */
3165
3166static boolean
3167elf64_alpha_size_dynamic_sections (output_bfd, info)
3168 bfd *output_bfd;
3169 struct bfd_link_info *info;
3170{
3171 bfd *dynobj;
3172 asection *s;
3173 boolean reltext;
3174 boolean relplt;
3175
3176 dynobj = elf_hash_table(info)->dynobj;
3177 BFD_ASSERT(dynobj != NULL);
3178
3179 if (elf_hash_table (info)->dynamic_sections_created)
3180 {
3181 /* Set the contents of the .interp section to the interpreter. */
3182 if (!info->shared)
3183 {
3184 s = bfd_get_section_by_name (dynobj, ".interp");
3185 BFD_ASSERT (s != NULL);
3186 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3187 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3188 }
3189
3190 /* Now that we've seen all of the input files, we can decide which
3191 symbols need dynamic relocation entries and which don't. We've
3192 collected information in check_relocs that we can now apply to
3193 size the dynamic relocation sections. */
3194 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3195 elf64_alpha_calc_dynrel_sizes,
3196 info);
3197
3198 /* When building shared libraries, each local .got entry needs a
3199 RELATIVE reloc. */
3200 if (info->shared)
3201 {
3202 bfd *i;
3203 asection *srel;
3204 bfd_size_type count;
3205
3206 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3207 BFD_ASSERT (srel != NULL);
3208
3209 for (i = alpha_elf_hash_table(info)->got_list, count = 0;
3210 i != NULL;
3211 i = alpha_elf_tdata(i)->got_link_next)
3212 count += alpha_elf_tdata(i)->n_local_got_entries;
3213
3214 srel->_raw_size += count * sizeof(Elf64_External_Rela);
3215 }
3216 }
3217 /* else we're not dynamic and by definition we don't need such things. */
3218
3219 /* The check_relocs and adjust_dynamic_symbol entry points have
3220 determined the sizes of the various dynamic sections. Allocate
3221 memory for them. */
3222 reltext = false;
3223 relplt = false;
3224 for (s = dynobj->sections; s != NULL; s = s->next)
3225 {
3226 const char *name;
3227 boolean strip;
3228
3229 if (!(s->flags & SEC_LINKER_CREATED))
3230 continue;
3231
3232 /* It's OK to base decisions on the section name, because none
3233 of the dynobj section names depend upon the input files. */
3234 name = bfd_get_section_name (dynobj, s);
3235
3236 /* If we don't need this section, strip it from the output file.
3237 This is to handle .rela.bss and .rela.plt. We must create it
3238 in create_dynamic_sections, because it must be created before
3239 the linker maps input sections to output sections. The
3240 linker does that before adjust_dynamic_symbol is called, and
3241 it is that function which decides whether anything needs to
3242 go into these sections. */
3243
3244 strip = false;
3245
3246 if (strncmp (name, ".rela", 5) == 0)
3247 {
3248 strip = (s->_raw_size == 0);
3249
3250 if (!strip)
3251 {
3252 const char *outname;
3253 asection *target;
3254
3255 /* If this relocation section applies to a read only
3256 section, then we probably need a DT_TEXTREL entry. */
3257 outname = bfd_get_section_name (output_bfd,
3258 s->output_section);
3259 target = bfd_get_section_by_name (output_bfd, outname + 5);
3260 if (target != NULL
3261 && (target->flags & SEC_READONLY) != 0
3262 && (target->flags & SEC_ALLOC) != 0)
3263 reltext = true;
3264
3265 if (strcmp(name, ".rela.plt") == 0)
3266 relplt = true;
3267
3268 /* We use the reloc_count field as a counter if we need
3269 to copy relocs into the output file. */
3270 s->reloc_count = 0;
3271 }
3272 }
3273 else if (strcmp (name, ".plt") != 0)
3274 {
3275 /* It's not one of our dynamic sections, so don't allocate space. */
3276 continue;
3277 }
3278
3279 if (strip)
7f8d5fc9 3280 _bfd_strip_section_from_output (info, s);
252b5132
RH		 3281 else
3282 {
3283 /* Allocate memory for the section contents. */
3284 s->contents = (bfd_byte *) bfd_zalloc(dynobj, s->_raw_size);
3285 if (s->contents == NULL && s->_raw_size != 0)
3286 return false;
3287 }
3288 }
3289
252b5132
RH		 3290 if (elf_hash_table (info)->dynamic_sections_created)
3291 {
3292 /* Add some entries to the .dynamic section. We fill in the
3293 values later, in elf64_alpha_finish_dynamic_sections, but we
3294 must add the entries now so that we get the correct size for
3295 the .dynamic section. The DT_DEBUG entry is filled in by the
3296 dynamic linker and used by the debugger. */
3297 if (!info->shared)
3298 {
3299 if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
3300 return false;
3301 }
3302
3303 if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0))
3304 return false;
3305
3306 if (relplt)
3307 {
3308 if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0)
3309 || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
3310 || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0))
3311 return false;
3312 }
3313
3314 if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0)
3315 || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0)
3316 || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT,
3317 sizeof(Elf64_External_Rela)))
3318 return false;
3319
3320 if (reltext)
3321 {
3322 if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
3323 return false;
d6cf2879 3324 info->flags |= DF_TEXTREL;
252b5132
RH		 3325 }
3326 }
3327
3328 return true;
3329}
3330
252b5132
RH		 3331/* Relocate an Alpha ELF section. */
3332
3333static boolean
3334elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section,
3335 contents, relocs, local_syms, local_sections)
3336 bfd *output_bfd;
3337 struct bfd_link_info *info;
3338 bfd *input_bfd;
3339 asection *input_section;
3340 bfd_byte *contents;
3341 Elf_Internal_Rela *relocs;
3342 Elf_Internal_Sym *local_syms;
3343 asection **local_sections;
3344{
3345 Elf_Internal_Shdr *symtab_hdr;
3346 Elf_Internal_Rela *rel;
3347 Elf_Internal_Rela *relend;
3348 asection *sec, *sgot, *srel, *srelgot;
3349 bfd *dynobj, *gotobj;
3350 bfd_vma gp;
3351
3352 srelgot = srel = NULL;
3353 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3354 dynobj = elf_hash_table (info)->dynobj;
3355 if (dynobj)
3356 {
3357 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3358 }
3359
3360 /* Find the gp value for this input bfd. */
3361 sgot = NULL;
3362 gp = 0;
3363 gotobj = alpha_elf_tdata (input_bfd)->gotobj;
3364 if (gotobj)
3365 {
3366 sgot = alpha_elf_tdata (gotobj)->got;
3367 gp = _bfd_get_gp_value (gotobj);
3368 if (gp == 0)
3369 {
3370 gp = (sgot->output_section->vma
3371 + sgot->output_offset
3372 + 0x8000);
3373 _bfd_set_gp_value (gotobj, gp);
3374 }
3375 }
3376
3377 rel = relocs;
3378 relend = relocs + input_section->reloc_count;
3379 for (; rel < relend; rel++)
3380 {
3381 int r_type;
3382 reloc_howto_type *howto;
3383 unsigned long r_symndx;
3384 struct alpha_elf_link_hash_entry *h;
3385 Elf_Internal_Sym *sym;
3386 bfd_vma relocation;
3387 bfd_vma addend;
3388 bfd_reloc_status_type r;
3389
3390 r_type = ELF64_R_TYPE(rel->r_info);
3391 if (r_type < 0 || r_type >= (int) R_ALPHA_max)
3392 {
3393 bfd_set_error (bfd_error_bad_value);
3394 return false;
3395 }
3396 howto = elf64_alpha_howto_table + r_type;
3397
3398 r_symndx = ELF64_R_SYM(rel->r_info);
3399
3400 if (info->relocateable)
3401 {
3402 /* This is a relocateable link. We don't have to change
3403 anything, unless the reloc is against a section symbol,
3404 in which case we have to adjust according to where the
3405 section symbol winds up in the output section. */
72b60c23
RH		 3406
3407 /* The symbol associated with GPDISP and LITUSE is
3408 immaterial. Only the addend is significant. */
3409 if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE)
3410 continue;
3411
252b5132
RH		 3412 if (r_symndx < symtab_hdr->sh_info)
3413 {
3414 sym = local_syms + r_symndx;
3415 if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
3416 {
3417 sec = local_sections[r_symndx];
3418 rel->r_addend += sec->output_offset + sym->st_value;
3419 }
3420 }
3421
3422 continue;
3423 }
3424
3425 /* This is a final link. */
3426
3427 h = NULL;
3428 sym = NULL;
3429 sec = NULL;
3430
3431 if (r_symndx < symtab_hdr->sh_info)
3432 {
3433 sym = local_syms + r_symndx;
3434 sec = local_sections[r_symndx];
3435 relocation = (sec->output_section->vma
3436 + sec->output_offset
3437 + sym->st_value);
3438 }
3439 else
3440 {
3441 h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info];
3442
3443 while (h->root.root.type == bfd_link_hash_indirect
3444 || h->root.root.type == bfd_link_hash_warning)
3445 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3446
3447 if (h->root.root.type == bfd_link_hash_defined
3448 || h->root.root.type == bfd_link_hash_defweak)
3449 {
3450 sec = h->root.root.u.def.section;
3451
3452#if rth_notdef
3453 if ((r_type == R_ALPHA_LITERAL
3454 && elf_hash_table(info)->dynamic_sections_created
3455 && (!info->shared
3456 || !info->symbolic
3457 || !(h->root.elf_link_hash_flags
3458 & ELF_LINK_HASH_DEF_REGULAR)))
3459 || (info->shared
3460 && (!info->symbolic
3461 || !(h->root.elf_link_hash_flags
3462 & ELF_LINK_HASH_DEF_REGULAR))
3463 && (input_section->flags & SEC_ALLOC)
3464 && (r_type == R_ALPHA_REFLONG
3465 || r_type == R_ALPHA_REFQUAD
3466 || r_type == R_ALPHA_LITERAL)))
3467 {
3468 /* In these cases, we don't need the relocation value.
3469 We check specially because in some obscure cases
3470 sec->output_section will be NULL. */
3471 relocation = 0;
3472 }
3473#else
3474 /* FIXME: Are not these obscure cases simply bugs? Let's
3475 get something working and come back to this. */
3476 if (sec->output_section == NULL)
3477 relocation = 0;
3478#endif /* rth_notdef */
3479 else
3480 {
3481 relocation = (h->root.root.u.def.value
3482 + sec->output_section->vma
3483 + sec->output_offset);
3484 }
3485 }
3486 else if (h->root.root.type == bfd_link_hash_undefweak)
3487 relocation = 0;
3a27a730
L		 3488 else if (info->shared && !info->symbolic
3489 && !info->no_undefined
edb72b3b 3490 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
252b5132
RH		 3491 relocation = 0;
3492 else
3493 {
3494 if (!((*info->callbacks->undefined_symbol)
3495 (info, h->root.root.root.string, input_bfd,
5cc7c785 3496 input_section, rel->r_offset,
3a27a730 3497 (!info->shared || info->no_undefined
edb72b3b 3498 || ELF_ST_VISIBILITY (h->root.other)))))
252b5132
RH		 3499 return false;
3500 relocation = 0;
3501 }
3502 }
3503 addend = rel->r_addend;
3504
3505 switch (r_type)
3506 {
3507 case R_ALPHA_GPDISP:
3508 {
3509 bfd_byte *p_ldah, *p_lda;
3510
3511 BFD_ASSERT(gp != 0);
3512
3513 relocation = (input_section->output_section->vma
3514 + input_section->output_offset
3515 + rel->r_offset);
3516
3517 p_ldah = contents + rel->r_offset - input_section->vma;
3518 p_lda = p_ldah + rel->r_addend;
3519
3520 r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation,
3521 p_ldah, p_lda);
3522 }
3523 break;
3524
3525 case R_ALPHA_OP_PUSH:
3526 case R_ALPHA_OP_STORE:
3527 case R_ALPHA_OP_PSUB:
3528 case R_ALPHA_OP_PRSHIFT:
3529 /* We hate these silly beasts. */
3530 abort();
3531
3532 case R_ALPHA_LITERAL:
3533 {
3534 struct alpha_elf_got_entry *gotent;
3535 boolean dynamic_symbol;
3536
3537 BFD_ASSERT(sgot != NULL);
3538 BFD_ASSERT(gp != 0);
3539
3540 if (h != NULL)
3541 {
3542 gotent = h->got_entries;
3543 dynamic_symbol = alpha_elf_dynamic_symbol_p (&h->root, info);
3544 }
3545 else
3546 {
3547 gotent = (alpha_elf_tdata(input_bfd)->
3548 local_got_entries[r_symndx]);
3549 dynamic_symbol = false;
3550 }
3551
3552 BFD_ASSERT(gotent != NULL);
3553
3554 while (gotent->gotobj != gotobj || gotent->addend != addend)
3555 gotent = gotent->next;
3556
3557 BFD_ASSERT(gotent->use_count >= 1);
3558
3559 /* Initialize the .got entry's value. */
3560 if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE))
3561 {
3562 bfd_put_64 (output_bfd, relocation+addend,
3563 sgot->contents + gotent->got_offset);
3564
3565 /* If the symbol has been forced local, output a
3566 RELATIVE reloc, otherwise it will be handled in
3567 finish_dynamic_symbol. */
3568 if (info->shared && !dynamic_symbol)
3569 {
3570 Elf_Internal_Rela outrel;
3571
3572 BFD_ASSERT(srelgot != NULL);
3573
3574 outrel.r_offset = (sgot->output_section->vma
3575 + sgot->output_offset
3576 + gotent->got_offset);
3577 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
3578 outrel.r_addend = 0;
3579
3580 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3581 ((Elf64_External_Rela *)
3582 srelgot->contents)
3583 + srelgot->reloc_count++);
3584 BFD_ASSERT (sizeof(Elf64_External_Rela)
3585 * srelgot->reloc_count
3586 <= srelgot->_cooked_size);
3587 }
3588
3589 gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE;
3590 }
3591
3592 /* Figure the gprel relocation. */
3593 addend = 0;
3594 relocation = (sgot->output_section->vma
3595 + sgot->output_offset
3596 + gotent->got_offset);
3597 relocation -= gp;
3598 }
3599 /* overflow handled by _bfd_final_link_relocate */
3600 goto default_reloc;
3601
3602 case R_ALPHA_GPREL32:
3603 case R_ALPHA_GPRELLOW:
3604 BFD_ASSERT(gp != 0);
3605 relocation -= gp;
3606 goto default_reloc;
3607
3608 case R_ALPHA_GPRELHIGH:
3609 BFD_ASSERT(gp != 0);
3610 relocation -= gp;
3611 relocation += addend;
3612 addend = 0;
3613 relocation = (((bfd_signed_vma) relocation >> 16)
3614 + ((relocation >> 15) & 1));
3615 goto default_reloc;
3616
3617 case R_ALPHA_BRADDR:
3618 case R_ALPHA_HINT:
3619 /* The regular PC-relative stuff measures from the start of
3620 the instruction rather than the end. */
3621 addend -= 4;
3622 goto default_reloc;
3623
3624 case R_ALPHA_REFLONG:
3625 case R_ALPHA_REFQUAD:
3626 {
3627 Elf_Internal_Rela outrel;
3628 boolean skip;
3629
3630 /* Careful here to remember RELATIVE relocations for global
3631 variables for symbolic shared objects. */
3632
3633 if (h && alpha_elf_dynamic_symbol_p (&h->root, info))
3634 {
3635 BFD_ASSERT(h->root.dynindx != -1);
3636 outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type);
3637 outrel.r_addend = addend;
3638 addend = 0, relocation = 0;
3639 }
c555c5c5 3640 else if (info->shared && (input_section->flags & SEC_ALLOC))
252b5132
RH		 3641 {
3642 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
3643 outrel.r_addend = 0;
3644 }
3645 else
3646 goto default_reloc;
3647
3648 if (!srel)
3649 {
3650 const char *name;
3651
3652 name = (bfd_elf_string_from_elf_section
3653 (input_bfd, elf_elfheader(input_bfd)->e_shstrndx,
3654 elf_section_data(input_section)->rel_hdr.sh_name));
3655 BFD_ASSERT(name != NULL);
3656
3657 srel = bfd_get_section_by_name (dynobj, name);
3658 BFD_ASSERT(srel != NULL);
3659 }
3660
3661 skip = false;
3662
3663 if (elf_section_data (input_section)->stab_info == NULL)
3664 outrel.r_offset = rel->r_offset;
3665 else
3666 {
3667 bfd_vma off;
3668
3669 off = (_bfd_stab_section_offset
3670 (output_bfd, &elf_hash_table (info)->stab_info,
3671 input_section,
3672 &elf_section_data (input_section)->stab_info,
3673 rel->r_offset));
3674 if (off == (bfd_vma) -1)
3675 skip = true;
3676 outrel.r_offset = off;
3677 }
3678
3679 if (! skip)
3680 outrel.r_offset += (input_section->output_section->vma
3681 + input_section->output_offset);
3682 else
3683 memset (&outrel, 0, sizeof outrel);
3684
3685 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3686 ((Elf64_External_Rela *)
3687 srel->contents)
3688 + srel->reloc_count++);
3689 BFD_ASSERT (sizeof(Elf64_External_Rela) * srel->reloc_count
3690 <= srel->_cooked_size);
3691 }
3692 goto default_reloc;
3693
3694 default:
3695 default_reloc:
3696 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3697 contents, rel->r_offset, relocation,
3698 addend);
3699 break;
3700 }
3701
3702 switch (r)
3703 {
3704 case bfd_reloc_ok:
3705 break;
3706
3707 case bfd_reloc_overflow:
3708 {
3709 const char *name;
3710
3711 if (h != NULL)
3712 name = h->root.root.root.string;
3713 else
3714 {
3715 name = (bfd_elf_string_from_elf_section
3716 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3717 if (name == NULL)
3718 return false;
3719 if (*name == '\0')
3720 name = bfd_section_name (input_bfd, sec);
3721 }
3722 if (! ((*info->callbacks->reloc_overflow)
3723 (info, name, howto->name, (bfd_vma) 0,
3724 input_bfd, input_section, rel->r_offset)))
3725 return false;
3726 }
3727 break;
3728
3729 default:
3730 case bfd_reloc_outofrange:
3731 abort ();
3732 }
3733 }
3734
3735 return true;
3736}
3737
3738/* Finish up dynamic symbol handling. We set the contents of various
3739 dynamic sections here. */
3740
3741static boolean
3742elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym)
3743 bfd *output_bfd;
3744 struct bfd_link_info *info;
3745 struct elf_link_hash_entry *h;
3746 Elf_Internal_Sym *sym;
3747{
3748 bfd *dynobj = elf_hash_table(info)->dynobj;
3749
3750 if (h->plt.offset != MINUS_ONE)
3751 {
3752 /* Fill in the .plt entry for this symbol. */
3753 asection *splt, *sgot, *srel;
3754 Elf_Internal_Rela outrel;
3755 bfd_vma got_addr, plt_addr;
3756 bfd_vma plt_index;
3757 struct alpha_elf_got_entry *gotent;
3758
3759 BFD_ASSERT (h->dynindx != -1);
3760
3761 /* The first .got entry will be updated by the .plt with the
3762 address of the target function. */
3763 gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
3764 BFD_ASSERT (gotent && gotent->addend == 0);
3765
3766 splt = bfd_get_section_by_name (dynobj, ".plt");
3767 BFD_ASSERT (splt != NULL);
3768 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
3769 BFD_ASSERT (srel != NULL);
3770 sgot = alpha_elf_tdata (gotent->gotobj)->got;
3771 BFD_ASSERT (sgot != NULL);
3772
3773 got_addr = (sgot->output_section->vma
3774 + sgot->output_offset
3775 + gotent->got_offset);
3776 plt_addr = (splt->output_section->vma
3777 + splt->output_offset
3778 + h->plt.offset);
3779
3780 plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
3781
3782 /* Fill in the entry in the procedure linkage table. */
3783 {
3784 unsigned insn1, insn2, insn3;
3785
3786 insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff);
3787 insn2 = PLT_ENTRY_WORD2;
3788 insn3 = PLT_ENTRY_WORD3;
3789
3790 bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset);
3791 bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4);
3792 bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8);
3793 }
3794
3795 /* Fill in the entry in the .rela.plt section. */
3796 outrel.r_offset = got_addr;
3797 outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT);
3798 outrel.r_addend = 0;
3799
3800 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3801 ((Elf64_External_Rela *)srel->contents
3802 + plt_index));
3803
3804 if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3805 {
3806 /* Mark the symbol as undefined, rather than as defined in the
3807 .plt section. Leave the value alone. */
3808 sym->st_shndx = SHN_UNDEF;
3809 }
3810
3811 /* Fill in the entries in the .got. */
3812 bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset);
3813
3814 /* Subsequent .got entries will continue to bounce through the .plt. */
3815 if (gotent->next)
3816 {
3817 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3818 BFD_ASSERT (! info->shared || srel != NULL);
3819
3820 gotent = gotent->next;
3821 do
3822 {
3823 sgot = alpha_elf_tdata(gotent->gotobj)->got;
3824 BFD_ASSERT(sgot != NULL);
3825 BFD_ASSERT(gotent->addend == 0);
3826
3827 bfd_put_64 (output_bfd, plt_addr,
3828 sgot->contents + gotent->got_offset);
3829
3830 if (info->shared)
3831 {
3832 outrel.r_offset = (sgot->output_section->vma
3833 + sgot->output_offset
3834 + gotent->got_offset);
3835 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
3836 outrel.r_addend = 0;
3837
3838 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3839 ((Elf64_External_Rela *)
3840 srel->contents)
3841 + srel->reloc_count++);
3842 BFD_ASSERT (sizeof(Elf64_External_Rela) * srel->reloc_count
3843 <= srel->_cooked_size);
3844 }
3845
3846 gotent = gotent->next;
3847 }
3848 while (gotent != NULL);
3849 }
3850 }
3851 else if (alpha_elf_dynamic_symbol_p (h, info))
3852 {
3853 /* Fill in the dynamic relocations for this symbol's .got entries. */
3854 asection *srel;
3855 Elf_Internal_Rela outrel;
3856 struct alpha_elf_got_entry *gotent;
3857
3858 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3859 BFD_ASSERT (srel != NULL);
3860
3861 outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT);
3862 for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
3863 gotent != NULL;
3864 gotent = gotent->next)
3865 {
3866 asection *sgot = alpha_elf_tdata (gotent->gotobj)->got;
3867 outrel.r_offset = (sgot->output_section->vma
3868 + sgot->output_offset
3869 + gotent->got_offset);
3870 outrel.r_addend = gotent->addend;
3871
3872 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3873 ((Elf64_External_Rela *)srel->contents
3874 + srel->reloc_count++));
3875 BFD_ASSERT (sizeof(Elf64_External_Rela) * srel->reloc_count
3876 <= srel->_cooked_size);
3877 }
3878 }
3879
3880 /* Mark some specially defined symbols as absolute. */
3881 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3882 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3883 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3884 sym->st_shndx = SHN_ABS;
3885
3886 return true;
3887}
3888
3889/* Finish up the dynamic sections. */
3890
3891static boolean
3892elf64_alpha_finish_dynamic_sections (output_bfd, info)
3893 bfd *output_bfd;
3894 struct bfd_link_info *info;
3895{
3896 bfd *dynobj;
3897 asection *sdyn;
3898
3899 dynobj = elf_hash_table (info)->dynobj;
3900 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3901
3902 if (elf_hash_table (info)->dynamic_sections_created)
3903 {
3904 asection *splt;
3905 Elf64_External_Dyn *dyncon, *dynconend;
3906
3907 splt = bfd_get_section_by_name (dynobj, ".plt");
3908 BFD_ASSERT (splt != NULL && sdyn != NULL);
3909
3910 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3911 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3912 for (; dyncon < dynconend; dyncon++)
3913 {
3914 Elf_Internal_Dyn dyn;
3915 const char *name;
3916 asection *s;
3917
3918 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3919
3920 switch (dyn.d_tag)
3921 {
3922 case DT_PLTGOT:
3923 name = ".plt";
3924 goto get_vma;
3925 case DT_PLTRELSZ:
3926 name = ".rela.plt";
3927 goto get_size;
3928 case DT_JMPREL:
3929 name = ".rela.plt";
3930 goto get_vma;
3931
3932 case DT_RELASZ:
3933 /* My interpretation of the TIS v1.1 ELF document indicates
3934 that RELASZ should not include JMPREL. This is not what
3935 the rest of the BFD does. It is, however, what the
3936 glibc ld.so wants. Do this fixup here until we found
3937 out who is right. */
3938 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
3939 if (s)
3940 {
3941 dyn.d_un.d_val -=
3942 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
3943 }
3944 break;
3945
3946 get_vma:
3947 s = bfd_get_section_by_name (output_bfd, name);
3948 dyn.d_un.d_ptr = (s ? s->vma : 0);
3949 break;
3950
3951 get_size:
3952 s = bfd_get_section_by_name (output_bfd, name);
3953 dyn.d_un.d_val =
3954 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
3955 break;
3956 }
3957
3958 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3959 }
3960
3961 /* Initialize the PLT0 entry */
3962 if (splt->_raw_size > 0)
3963 {
3964 bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents);
3965 bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4);
3966 bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8);
3967 bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12);
3968
3969 /* The next two words will be filled in by ld.so */
3970 bfd_put_64 (output_bfd, 0, splt->contents + 16);
3971 bfd_put_64 (output_bfd, 0, splt->contents + 24);
3972
3973 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3974 PLT_HEADER_SIZE;
3975 }
3976 }
3977
252b5132
RH		 3978 return true;
3979}
3980
3981/* We need to use a special link routine to handle the .reginfo and
3982 the .mdebug sections. We need to merge all instances of these
3983 sections together, not write them all out sequentially. */
3984
3985static boolean
3986elf64_alpha_final_link (abfd, info)
3987 bfd *abfd;
3988 struct bfd_link_info *info;
3989{
3990 asection *o;
3991 struct bfd_link_order *p;
3992 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
3993 struct ecoff_debug_info debug;
3994 const struct ecoff_debug_swap *swap
3995 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
3996 HDRR *symhdr = &debug.symbolic_header;
3997 PTR mdebug_handle = NULL;
3998
3999#if 0
4000 if (++ngots == 2)
4001 {
4002 (*info->callbacks->warning)
4003 (info, _("using multiple gp values"), (char *) NULL,
4004 output_bfd, (asection *) NULL, (bfd_vma) 0);
4005 }
4006#endif
4007
4008 /* Go through the sections and collect the .reginfo and .mdebug
4009 information. */
4010 reginfo_sec = NULL;
4011 mdebug_sec = NULL;
4012 gptab_data_sec = NULL;
4013 gptab_bss_sec = NULL;
4014 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4015 {
4016#ifdef ERIC_neverdef
4017 if (strcmp (o->name, ".reginfo") == 0)
4018 {
4019 memset (&reginfo, 0, sizeof reginfo);
4020
4021 /* We have found the .reginfo section in the output file.
4022 Look through all the link_orders comprising it and merge
4023 the information together. */
4024 for (p = o->link_order_head;
4025 p != (struct bfd_link_order *) NULL;
4026 p = p->next)
4027 {
4028 asection *input_section;
4029 bfd *input_bfd;
4030 Elf64_External_RegInfo ext;
4031 Elf64_RegInfo sub;
4032
4033 if (p->type != bfd_indirect_link_order)
4034 {
4035 if (p->type == bfd_fill_link_order)
4036 continue;
4037 abort ();
4038 }
4039
4040 input_section = p->u.indirect.section;
4041 input_bfd = input_section->owner;
4042
4043 /* The linker emulation code has probably clobbered the
4044 size to be zero bytes. */
4045 if (input_section->_raw_size == 0)
4046 input_section->_raw_size = sizeof (Elf64_External_RegInfo);
4047
4048 if (! bfd_get_section_contents (input_bfd, input_section,
4049 (PTR) &ext,
4050 (file_ptr) 0,
4051 sizeof ext))
4052 return false;
4053
4054 bfd_alpha_elf64_swap_reginfo_in (input_bfd, &ext, &sub);
4055
4056 reginfo.ri_gprmask |= sub.ri_gprmask;
4057 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
4058 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
4059 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
4060 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
4061
4062 /* ri_gp_value is set by the function
4063 alpha_elf_section_processing when the section is
4064 finally written out. */
4065
4066 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4067 elf_link_input_bfd ignores this section. */
4068 input_section->flags &=~ SEC_HAS_CONTENTS;
4069 }
4070
4071 /* Force the section size to the value we want. */
4072 o->_raw_size = sizeof (Elf64_External_RegInfo);
4073
4074 /* Skip this section later on (I don't think this currently
4075 matters, but someday it might). */
4076 o->link_order_head = (struct bfd_link_order *) NULL;
4077
4078 reginfo_sec = o;
4079 }
4080#endif
4081
4082 if (strcmp (o->name, ".mdebug") == 0)
4083 {
4084 struct extsym_info einfo;
4085
4086 /* We have found the .mdebug section in the output file.
4087 Look through all the link_orders comprising it and merge
4088 the information together. */
4089 symhdr->magic = swap->sym_magic;
4090 /* FIXME: What should the version stamp be? */
4091 symhdr->vstamp = 0;
4092 symhdr->ilineMax = 0;
4093 symhdr->cbLine = 0;
4094 symhdr->idnMax = 0;
4095 symhdr->ipdMax = 0;
4096 symhdr->isymMax = 0;
4097 symhdr->ioptMax = 0;
4098 symhdr->iauxMax = 0;
4099 symhdr->issMax = 0;
4100 symhdr->issExtMax = 0;
4101 symhdr->ifdMax = 0;
4102 symhdr->crfd = 0;
4103 symhdr->iextMax = 0;
4104
4105 /* We accumulate the debugging information itself in the
4106 debug_info structure. */
4107 debug.line = NULL;
4108 debug.external_dnr = NULL;
4109 debug.external_pdr = NULL;
4110 debug.external_sym = NULL;
4111 debug.external_opt = NULL;
4112 debug.external_aux = NULL;
4113 debug.ss = NULL;
4114 debug.ssext = debug.ssext_end = NULL;
4115 debug.external_fdr = NULL;
4116 debug.external_rfd = NULL;
4117 debug.external_ext = debug.external_ext_end = NULL;
4118
4119 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
4120 if (mdebug_handle == (PTR) NULL)
4121 return false;
4122
4123 if (1)
4124 {
4125 asection *s;
4126 EXTR esym;
4127 bfd_vma last;
4128 unsigned int i;
4129 static const char * const name[] =
4130 {
4131 ".text", ".init", ".fini", ".data",
4132 ".rodata", ".sdata", ".sbss", ".bss"
4133 };
4134 static const int sc[] = { scText, scInit, scFini, scData,
4135 scRData, scSData, scSBss, scBss };
4136
4137 esym.jmptbl = 0;
4138 esym.cobol_main = 0;
4139 esym.weakext = 0;
4140 esym.reserved = 0;
4141 esym.ifd = ifdNil;
4142 esym.asym.iss = issNil;
4143 esym.asym.st = stLocal;
4144 esym.asym.reserved = 0;
4145 esym.asym.index = indexNil;
4146 for (i = 0; i < 8; i++)
4147 {
4148 esym.asym.sc = sc[i];
4149 s = bfd_get_section_by_name (abfd, name[i]);
4150 if (s != NULL)
4151 {
4152 esym.asym.value = s->vma;
4153 last = s->vma + s->_raw_size;
4154 }
4155 else
4156 esym.asym.value = last;
4157
4158 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
4159 name[i], &esym))
4160 return false;
4161 }
4162 }
4163
4164 for (p = o->link_order_head;
4165 p != (struct bfd_link_order *) NULL;
4166 p = p->next)
4167 {
4168 asection *input_section;
4169 bfd *input_bfd;
4170 const struct ecoff_debug_swap *input_swap;
4171 struct ecoff_debug_info input_debug;
4172 char *eraw_src;
4173 char *eraw_end;
4174
4175 if (p->type != bfd_indirect_link_order)
4176 {
4177 if (p->type == bfd_fill_link_order)
4178 continue;
4179 abort ();
4180 }
4181
4182 input_section = p->u.indirect.section;
4183 input_bfd = input_section->owner;
4184
4185 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
4186 || (get_elf_backend_data (input_bfd)
4187 ->elf_backend_ecoff_debug_swap) == NULL)
4188 {
4189 /* I don't know what a non ALPHA ELF bfd would be
4190 doing with a .mdebug section, but I don't really
4191 want to deal with it. */
4192 continue;
4193 }
4194
4195 input_swap = (get_elf_backend_data (input_bfd)
4196 ->elf_backend_ecoff_debug_swap);
4197
4198 BFD_ASSERT (p->size == input_section->_raw_size);
4199
4200 /* The ECOFF linking code expects that we have already
4201 read in the debugging information and set up an
4202 ecoff_debug_info structure, so we do that now. */
4203 if (!elf64_alpha_read_ecoff_info (input_bfd, input_section,
4204 &input_debug))
4205 return false;
4206
4207 if (! (bfd_ecoff_debug_accumulate
4208 (mdebug_handle, abfd, &debug, swap, input_bfd,
4209 &input_debug, input_swap, info)))
4210 return false;
4211
4212 /* Loop through the external symbols. For each one with
4213 interesting information, try to find the symbol in
4214 the linker global hash table and save the information
4215 for the output external symbols. */
4216 eraw_src = input_debug.external_ext;
4217 eraw_end = (eraw_src
4218 + (input_debug.symbolic_header.iextMax
4219 * input_swap->external_ext_size));
4220 for (;
4221 eraw_src < eraw_end;
4222 eraw_src += input_swap->external_ext_size)
4223 {
4224 EXTR ext;
4225 const char *name;
4226 struct alpha_elf_link_hash_entry *h;
4227
4228 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
4229 if (ext.asym.sc == scNil
4230 || ext.asym.sc == scUndefined
4231 || ext.asym.sc == scSUndefined)
4232 continue;
4233
4234 name = input_debug.ssext + ext.asym.iss;
4235 h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info),
4236 name, false, false, true);
4237 if (h == NULL || h->esym.ifd != -2)
4238 continue;
4239
4240 if (ext.ifd != -1)
4241 {
4242 BFD_ASSERT (ext.ifd
4243 < input_debug.symbolic_header.ifdMax);
4244 ext.ifd = input_debug.ifdmap[ext.ifd];
4245 }
4246
4247 h->esym = ext;
4248 }
4249
4250 /* Free up the information we just read. */
4251 free (input_debug.line);
4252 free (input_debug.external_dnr);
4253 free (input_debug.external_pdr);
4254 free (input_debug.external_sym);
4255 free (input_debug.external_opt);
4256 free (input_debug.external_aux);
4257 free (input_debug.ss);
4258 free (input_debug.ssext);
4259 free (input_debug.external_fdr);
4260 free (input_debug.external_rfd);
4261 free (input_debug.external_ext);
4262
4263 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4264 elf_link_input_bfd ignores this section. */
4265 input_section->flags &=~ SEC_HAS_CONTENTS;
4266 }
4267
4268#ifdef ERIC_neverdef
4269 if (info->shared)
4270 {
4271 /* Create .rtproc section. */
4272 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
4273 if (rtproc_sec == NULL)
4274 {
4275 flagword flags = (SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY
4277 | SEC_LINKER_CREATED
4278 | SEC_READONLY);
4279
4280 rtproc_sec = bfd_make_section (abfd, ".rtproc");
4281 if (rtproc_sec == NULL
4282 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
4283 || ! bfd_set_section_alignment (abfd, rtproc_sec, 12))
4284 return false;
4285 }
4286
4287 if (! alpha_elf_create_procedure_table (mdebug_handle, abfd,
4288 info, rtproc_sec, &debug))
4289 return false;
4290 }
4291#endif
4292
4293
4294 /* Build the external symbol information. */
4295 einfo.abfd = abfd;
4296 einfo.info = info;
4297 einfo.debug = &debug;
4298 einfo.swap = swap;
4299 einfo.failed = false;
4300 elf_link_hash_traverse (elf_hash_table (info),
4301 elf64_alpha_output_extsym,
4302 (PTR) &einfo);
4303 if (einfo.failed)
4304 return false;
4305
4306 /* Set the size of the .mdebug section. */
4307 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
4308
4309 /* Skip this section later on (I don't think this currently
4310 matters, but someday it might). */
4311 o->link_order_head = (struct bfd_link_order *) NULL;
4312
4313 mdebug_sec = o;
4314 }
4315
4316#ifdef ERIC_neverdef
4317 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
4318 {
4319 const char *subname;
4320 unsigned int c;
4321 Elf64_gptab *tab;
4322 Elf64_External_gptab *ext_tab;
4323 unsigned int i;
4324
4325 /* The .gptab.sdata and .gptab.sbss sections hold
4326 information describing how the small data area would
4327 change depending upon the -G switch. These sections
4328 not used in executables files. */
4329 if (! info->relocateable)
4330 {
4331 asection **secpp;
4332
4333 for (p = o->link_order_head;
4334 p != (struct bfd_link_order *) NULL;
4335 p = p->next)
4336 {
4337 asection *input_section;
4338
4339 if (p->type != bfd_indirect_link_order)
4340 {
4341 if (p->type == bfd_fill_link_order)
4342 continue;
4343 abort ();
4344 }
4345
4346 input_section = p->u.indirect.section;
4347
4348 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4349 elf_link_input_bfd ignores this section. */
4350 input_section->flags &=~ SEC_HAS_CONTENTS;
4351 }
4352
4353 /* Skip this section later on (I don't think this
4354 currently matters, but someday it might). */
4355 o->link_order_head = (struct bfd_link_order *) NULL;
4356
4357 /* Really remove the section. */
4358 for (secpp = &abfd->sections;
4359 *secpp != o;
4360 secpp = &(*secpp)->next)
4361 ;
4362 *secpp = (*secpp)->next;
4363 --abfd->section_count;
4364
4365 continue;
4366 }
4367
4368 /* There is one gptab for initialized data, and one for
4369 uninitialized data. */
4370 if (strcmp (o->name, ".gptab.sdata") == 0)
4371 gptab_data_sec = o;
4372 else if (strcmp (o->name, ".gptab.sbss") == 0)
4373 gptab_bss_sec = o;
4374 else
4375 {
4376 (*_bfd_error_handler)
4377 (_("%s: illegal section name `%s'"),
4378 bfd_get_filename (abfd), o->name);
4379 bfd_set_error (bfd_error_nonrepresentable_section);
4380 return false;
4381 }
4382
4383 /* The linker script always combines .gptab.data and
4384 .gptab.sdata into .gptab.sdata, and likewise for
4385 .gptab.bss and .gptab.sbss. It is possible that there is
4386 no .sdata or .sbss section in the output file, in which
4387 case we must change the name of the output section. */
4388 subname = o->name + sizeof ".gptab" - 1;
4389 if (bfd_get_section_by_name (abfd, subname) == NULL)
4390 {
4391 if (o == gptab_data_sec)
4392 o->name = ".gptab.data";
4393 else
4394 o->name = ".gptab.bss";
4395 subname = o->name + sizeof ".gptab" - 1;
4396 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
4397 }
4398
4399 /* Set up the first entry. */
4400 c = 1;
4401 tab = (Elf64_gptab *) bfd_malloc (c * sizeof (Elf64_gptab));
4402 if (tab == NULL)
4403 return false;
4404 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
4405 tab[0].gt_header.gt_unused = 0;
4406
4407 /* Combine the input sections. */
4408 for (p = o->link_order_head;
4409 p != (struct bfd_link_order *) NULL;
4410 p = p->next)
4411 {
4412 asection *input_section;
4413 bfd *input_bfd;
4414 bfd_size_type size;
4415 unsigned long last;
4416 bfd_size_type gpentry;
4417
4418 if (p->type != bfd_indirect_link_order)
4419 {
4420 if (p->type == bfd_fill_link_order)
4421 continue;
4422 abort ();
4423 }
4424
4425 input_section = p->u.indirect.section;
4426 input_bfd = input_section->owner;
4427
4428 /* Combine the gptab entries for this input section one
4429 by one. We know that the input gptab entries are
4430 sorted by ascending -G value. */
4431 size = bfd_section_size (input_bfd, input_section);
4432 last = 0;
4433 for (gpentry = sizeof (Elf64_External_gptab);
4434 gpentry < size;
4435 gpentry += sizeof (Elf64_External_gptab))
4436 {
4437 Elf64_External_gptab ext_gptab;
4438 Elf64_gptab int_gptab;
4439 unsigned long val;
4440 unsigned long add;
4441 boolean exact;
4442 unsigned int look;
4443
4444 if (! (bfd_get_section_contents
4445 (input_bfd, input_section, (PTR) &ext_gptab,
4446 gpentry, sizeof (Elf64_External_gptab))))
4447 {
4448 free (tab);
4449 return false;
4450 }
4451
4452 bfd_alpha_elf64_swap_gptab_in (input_bfd, &ext_gptab,
4453 &int_gptab);
4454 val = int_gptab.gt_entry.gt_g_value;
4455 add = int_gptab.gt_entry.gt_bytes - last;
4456
4457 exact = false;
4458 for (look = 1; look < c; look++)
4459 {
4460 if (tab[look].gt_entry.gt_g_value >= val)
4461 tab[look].gt_entry.gt_bytes += add;
4462
4463 if (tab[look].gt_entry.gt_g_value == val)
4464 exact = true;
4465 }
4466
4467 if (! exact)
4468 {
4469 Elf64_gptab *new_tab;
4470 unsigned int max;
4471
4472 /* We need a new table entry. */
4473 new_tab = ((Elf64_gptab *)
4474 bfd_realloc ((PTR) tab,
4475 (c + 1) * sizeof (Elf64_gptab)));
4476 if (new_tab == NULL)
4477 {
4478 free (tab);
4479 return false;
4480 }
4481 tab = new_tab;
4482 tab[c].gt_entry.gt_g_value = val;
4483 tab[c].gt_entry.gt_bytes = add;
4484
4485 /* Merge in the size for the next smallest -G
4486 value, since that will be implied by this new
4487 value. */
4488 max = 0;
4489 for (look = 1; look < c; look++)
4490 {
4491 if (tab[look].gt_entry.gt_g_value < val
4492 && (max == 0
4493 || (tab[look].gt_entry.gt_g_value
4494 > tab[max].gt_entry.gt_g_value)))
4495 max = look;
4496 }
4497 if (max != 0)
4498 tab[c].gt_entry.gt_bytes +=
4499 tab[max].gt_entry.gt_bytes;
4500
4501 ++c;
4502 }
4503
4504 last = int_gptab.gt_entry.gt_bytes;
4505 }
4506
4507 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4508 elf_link_input_bfd ignores this section. */
4509 input_section->flags &=~ SEC_HAS_CONTENTS;
4510 }
4511
4512 /* The table must be sorted by -G value. */
4513 if (c > 2)
4514 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
4515
4516 /* Swap out the table. */
4517 ext_tab = ((Elf64_External_gptab *)
4518 bfd_alloc (abfd, c * sizeof (Elf64_External_gptab)));
4519 if (ext_tab == NULL)
4520 {
4521 free (tab);
4522 return false;
4523 }
4524
4525 for (i = 0; i < c; i++)
4526 bfd_alpha_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i);
4527 free (tab);
4528
4529 o->_raw_size = c * sizeof (Elf64_External_gptab);
4530 o->contents = (bfd_byte *) ext_tab;
4531
4532 /* Skip this section later on (I don't think this currently
4533 matters, but someday it might). */
4534 o->link_order_head = (struct bfd_link_order *) NULL;
4535 }
4536#endif
4537
4538 }
4539
4540 /* Invoke the regular ELF backend linker to do all the work. */
4541 if (! bfd_elf64_bfd_final_link (abfd, info))
4542 return false;
4543
4544 /* Now write out the computed sections. */
4545
4546 /* The .got subsections... */
4547 {
4548 bfd *i, *dynobj = elf_hash_table(info)->dynobj;
4549 for (i = alpha_elf_hash_table(info)->got_list;
4550 i != NULL;
4551 i = alpha_elf_tdata(i)->got_link_next)
4552 {
4553 asection *sgot;
4554
4555 /* elf_bfd_final_link already did everything in dynobj. */
4556 if (i == dynobj)
4557 continue;
4558
4559 sgot = alpha_elf_tdata(i)->got;
4560 if (! bfd_set_section_contents (abfd, sgot->output_section,
4561 sgot->contents, sgot->output_offset,
4562 sgot->_raw_size))
4563 return false;
4564 }
4565 }
4566
4567#ifdef ERIC_neverdef
4568 if (reginfo_sec != (asection *) NULL)
4569 {
4570 Elf64_External_RegInfo ext;
4571
4572 bfd_alpha_elf64_swap_reginfo_out (abfd, &reginfo, &ext);
4573 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
4574 (file_ptr) 0, sizeof ext))
4575 return false;
4576 }
4577#endif
4578
4579 if (mdebug_sec != (asection *) NULL)
4580 {
4581 BFD_ASSERT (abfd->output_has_begun);
4582 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
4583 swap, info,
4584 mdebug_sec->filepos))
4585 return false;
4586
4587 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
4588 }
4589
4590 if (gptab_data_sec != (asection *) NULL)
4591 {
4592 if (! bfd_set_section_contents (abfd, gptab_data_sec,
4593 gptab_data_sec->contents,
4594 (file_ptr) 0,
4595 gptab_data_sec->_raw_size))
4596 return false;
4597 }
4598
4599 if (gptab_bss_sec != (asection *) NULL)
4600 {
4601 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
4602 gptab_bss_sec->contents,
4603 (file_ptr) 0,
4604 gptab_bss_sec->_raw_size))
4605 return false;
4606 }
4607
4608 return true;
4609}
4610\f
4611/* ECOFF swapping routines. These are used when dealing with the
4612 .mdebug section, which is in the ECOFF debugging format. Copied
4613 from elf32-mips.c. */
4614static const struct ecoff_debug_swap
4615elf64_alpha_ecoff_debug_swap =
4616{
4617 /* Symbol table magic number. */
4618 magicSym2,
4619 /* Alignment of debugging information. E.g., 4. */
4620 8,
4621 /* Sizes of external symbolic information. */
4622 sizeof (struct hdr_ext),
4623 sizeof (struct dnr_ext),
4624 sizeof (struct pdr_ext),
4625 sizeof (struct sym_ext),
4626 sizeof (struct opt_ext),
4627 sizeof (struct fdr_ext),
4628 sizeof (struct rfd_ext),
4629 sizeof (struct ext_ext),
4630 /* Functions to swap in external symbolic data. */
4631 ecoff_swap_hdr_in,
4632 ecoff_swap_dnr_in,
4633 ecoff_swap_pdr_in,
4634 ecoff_swap_sym_in,
4635 ecoff_swap_opt_in,
4636 ecoff_swap_fdr_in,
4637 ecoff_swap_rfd_in,
4638 ecoff_swap_ext_in,
4639 _bfd_ecoff_swap_tir_in,
4640 _bfd_ecoff_swap_rndx_in,
4641 /* Functions to swap out external symbolic data. */
4642 ecoff_swap_hdr_out,
4643 ecoff_swap_dnr_out,
4644 ecoff_swap_pdr_out,
4645 ecoff_swap_sym_out,
4646 ecoff_swap_opt_out,
4647 ecoff_swap_fdr_out,
4648 ecoff_swap_rfd_out,
4649 ecoff_swap_ext_out,
4650 _bfd_ecoff_swap_tir_out,
4651 _bfd_ecoff_swap_rndx_out,
4652 /* Function to read in symbolic data. */
4653 elf64_alpha_read_ecoff_info
4654};
4655\f
70bcb145
JW		 4656/* Use a non-standard hash bucket size of 8. */
4657
4658const struct elf_size_info alpha_elf_size_info =
4659{
4660 sizeof (Elf64_External_Ehdr),
4661 sizeof (Elf64_External_Phdr),
4662 sizeof (Elf64_External_Shdr),
4663 sizeof (Elf64_External_Rel),
4664 sizeof (Elf64_External_Rela),
4665 sizeof (Elf64_External_Sym),
4666 sizeof (Elf64_External_Dyn),
4667 sizeof (Elf_External_Note),
4668 8,
4669 1,
4670 64, 8,
4671 ELFCLASS64, EV_CURRENT,
4672 bfd_elf64_write_out_phdrs,
4673 bfd_elf64_write_shdrs_and_ehdr,
4674 bfd_elf64_write_relocs,
4675 bfd_elf64_swap_symbol_out,
4676 bfd_elf64_slurp_reloc_table,
4677 bfd_elf64_slurp_symbol_table,
4678 bfd_elf64_swap_dyn_in,
4679 bfd_elf64_swap_dyn_out,
4680 NULL,
4681 NULL,
4682 NULL,
4683 NULL
4684};
4685
252b5132
RH		 4686#define TARGET_LITTLE_SYM bfd_elf64_alpha_vec
4687#define TARGET_LITTLE_NAME "elf64-alpha"
4688#define ELF_ARCH bfd_arch_alpha
4689#define ELF_MACHINE_CODE EM_ALPHA
4690#define ELF_MAXPAGESIZE 0x10000
4691
4692#define bfd_elf64_bfd_link_hash_table_create \
4693 elf64_alpha_bfd_link_hash_table_create
4694
4695#define bfd_elf64_bfd_reloc_type_lookup \
4696 elf64_alpha_bfd_reloc_type_lookup
4697#define elf_info_to_howto \
4698 elf64_alpha_info_to_howto
4699
4700#define bfd_elf64_mkobject \
4701 elf64_alpha_mkobject
4702#define elf_backend_object_p \
4703 elf64_alpha_object_p
4704
4705#define elf_backend_section_from_shdr \
4706 elf64_alpha_section_from_shdr
4707#define elf_backend_fake_sections \
4708 elf64_alpha_fake_sections
4709
4710#define bfd_elf64_bfd_is_local_label_name \
4711 elf64_alpha_is_local_label_name
4712#define bfd_elf64_find_nearest_line \
4713 elf64_alpha_find_nearest_line
4714#define bfd_elf64_bfd_relax_section \
4715 elf64_alpha_relax_section
4716
4717#define elf_backend_add_symbol_hook \
4718 elf64_alpha_add_symbol_hook
4719#define elf_backend_check_relocs \
4720 elf64_alpha_check_relocs
4721#define elf_backend_create_dynamic_sections \
4722 elf64_alpha_create_dynamic_sections
4723#define elf_backend_adjust_dynamic_symbol \
4724 elf64_alpha_adjust_dynamic_symbol
4725#define elf_backend_always_size_sections \
4726 elf64_alpha_always_size_sections
4727#define elf_backend_size_dynamic_sections \
4728 elf64_alpha_size_dynamic_sections
4729#define elf_backend_relocate_section \
4730 elf64_alpha_relocate_section
4731#define elf_backend_finish_dynamic_symbol \
4732 elf64_alpha_finish_dynamic_symbol
4733#define elf_backend_finish_dynamic_sections \
4734 elf64_alpha_finish_dynamic_sections
4735#define bfd_elf64_bfd_final_link \
4736 elf64_alpha_final_link
4737
4738#define elf_backend_ecoff_debug_swap \
4739 &elf64_alpha_ecoff_debug_swap
4740
70bcb145
JW		 4741#define elf_backend_size_info \
4742 alpha_elf_size_info
4743
252b5132
RH		 4744/*
4745 * A few constants that determine how the .plt section is set up.
4746 */
4747#define elf_backend_want_got_plt 0
4748#define elf_backend_plt_readonly 0
4749#define elf_backend_want_plt_sym 1
4750#define elf_backend_got_header_size 0
4751#define elf_backend_plt_header_size PLT_HEADER_SIZE
4752
4753#include "elf64-target.h"
GDB Binutils - Deliverables
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