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* archive.c (_bfd_generic_read_ar_hdr_mag): Simplify end-of-name test.
[deliverable/binutils-gdb.git] / bfd / elf64-alpha.c
CommitLineData
ff12f303 1/* Alpha specific support for 64-bit ELF
69842d08 2 Copyright 1996, 1997, 1998 Free Software Foundation, Inc.
297a4f1a
ILT		 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
303e7257 49static boolean elf64_alpha_mkobject PARAMS ((bfd *));
297a4f1a
ILT		 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 **));
ff12f303
ILT		 57static bfd_reloc_status_type elf64_alpha_reloc_bad
58 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
297a4f1a
ILT		 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 **));
297a4f1a
ILT		 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 int elf64_alpha_additional_program_headers
76 PARAMS((bfd *));
77static boolean elf64_alpha_create_got_section
78 PARAMS((bfd *, struct bfd_link_info *));
79static boolean elf64_alpha_create_dynamic_sections
80 PARAMS((bfd *, struct bfd_link_info *));
81
82static boolean elf64_alpha_read_ecoff_info
83 PARAMS((bfd *, asection *, struct ecoff_debug_info *));
303e7257
ILT		 84static boolean elf64_alpha_is_local_label_name
85 PARAMS((bfd *, const char *));
297a4f1a
ILT		 86static boolean elf64_alpha_find_nearest_line
87 PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **,
88 const char **, unsigned int *));
89
37d7888d 90#if defined(__STDC__) || defined(ALMOST_STDC)
297a4f1a 91struct alpha_elf_link_hash_entry;
37d7888d
ILT		 92#endif
93
297a4f1a
ILT		 94static boolean elf64_alpha_output_extsym
95 PARAMS((struct alpha_elf_link_hash_entry *, PTR));
96
ff12f303
ILT		 97static boolean elf64_alpha_can_merge_gots
98 PARAMS((bfd *, bfd *));
99static void elf64_alpha_merge_gots
100 PARAMS((bfd *, bfd *));
303e7257
ILT		 101static boolean elf64_alpha_calc_got_offsets_for_symbol
102 PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
103static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *));
104static void elf64_alpha_strip_section_from_output PARAMS ((asection *));
69842d08
RH		 105static boolean elf64_alpha_size_got_sections
106 PARAMS ((bfd *, struct bfd_link_info *));
303e7257
ILT		 107static boolean elf64_alpha_always_size_sections
108 PARAMS ((bfd *, struct bfd_link_info *));
109static boolean elf64_alpha_calc_dynrel_sizes
110 PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *));
69842d08
RH		 111static boolean elf64_alpha_add_symbol_hook
112 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
113 const char **, flagword *, asection **, bfd_vma *));
297a4f1a
ILT		 114static boolean elf64_alpha_check_relocs
115 PARAMS((bfd *, struct bfd_link_info *, asection *sec,
116 const Elf_Internal_Rela *));
117static boolean elf64_alpha_adjust_dynamic_symbol
118 PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *));
119static boolean elf64_alpha_size_dynamic_sections
120 PARAMS((bfd *, struct bfd_link_info *));
121static boolean elf64_alpha_adjust_dynindx
122 PARAMS((struct elf_link_hash_entry *, PTR));
123static boolean elf64_alpha_relocate_section
124 PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
125 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
126static boolean elf64_alpha_finish_dynamic_symbol
127 PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
128 Elf_Internal_Sym *));
129static boolean elf64_alpha_finish_dynamic_sections
130 PARAMS((bfd *, struct bfd_link_info *));
131static boolean elf64_alpha_final_link
132 PARAMS((bfd *, struct bfd_link_info *));
133
134\f
297a4f1a
ILT		 135struct alpha_elf_link_hash_entry
136{
137 struct elf_link_hash_entry root;
138
139 /* External symbol information. */
140 EXTR esym;
37d7888d 141
ff12f303
ILT		 142 /* Cumulative flags for all the .got entries. */
143 int flags;
144
37d7888d 145 /* Contexts (LITUSE) in which a literal was referenced. */
ff12f303
ILT		 146#define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01
147#define ALPHA_ELF_LINK_HASH_LU_MEM 0x02
148#define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04
149#define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08
150
151 /* Used to implement multiple .got subsections. */
152 struct alpha_elf_got_entry
153 {
154 struct alpha_elf_got_entry *next;
155
156 /* which .got subsection? */
157 bfd *gotobj;
158
159 /* the addend in effect for this entry. */
160 bfd_vma addend;
161
162 /* the .got offset for this entry. */
163 int got_offset;
164
165 int flags;
166
167 /* An additional flag. */
168#define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10
69842d08
RH		 169
170 int use_count;
ff12f303
ILT		 171 } *got_entries;
172
173 /* used to count non-got, non-plt relocations for delayed sizing
174 of relocation sections. */
175 struct alpha_elf_reloc_entry
176 {
177 struct alpha_elf_reloc_entry *next;
178
179 /* which .reloc section? */
180 asection *srel;
181
182 /* what kind of relocation? */
183 unsigned long rtype;
184
185 /* how many did we find? */
186 unsigned long count;
187 } *reloc_entries;
297a4f1a
ILT		 188};
189
190/* Alpha ELF linker hash table. */
191
192struct alpha_elf_link_hash_table
193{
194 struct elf_link_hash_table root;
ff12f303
ILT		 195
196 /* The head of a list of .got subsections linked through
197 alpha_elf_tdata(abfd)->got_link_next. */
198 bfd *got_list;
297a4f1a
ILT		 199};
200
201/* Look up an entry in a Alpha ELF linker hash table. */
202
203#define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \
204 ((struct alpha_elf_link_hash_entry *) \
205 elf_link_hash_lookup (&(table)->root, (string), (create), \
206 (copy), (follow)))
207
208/* Traverse a Alpha ELF linker hash table. */
209
210#define alpha_elf_link_hash_traverse(table, func, info) \
211 (elf_link_hash_traverse \
212 (&(table)->root, \
213 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
214 (info)))
215
216/* Get the Alpha ELF linker hash table from a link_info structure. */
217
218#define alpha_elf_hash_table(p) \
219 ((struct alpha_elf_link_hash_table *) ((p)->hash))
220
ff12f303
ILT		 221/* Get the object's symbols as our own entry type. */
222
223#define alpha_elf_sym_hashes(abfd) \
224 ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd))
225
226/* Should we do dynamic things to this symbol? */
227
228#define alpha_elf_dynamic_symbol_p(h, info) \
303e7257 229 (((info)->shared && !(info)->symbolic && (h)->dynindx != -1) \
ff12f303
ILT		 230 || (((h)->elf_link_hash_flags \
231 & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \
232 == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)))
233
297a4f1a
ILT		 234/* Create an entry in a Alpha ELF linker hash table. */
235
236static struct bfd_hash_entry *
237elf64_alpha_link_hash_newfunc (entry, table, string)
238 struct bfd_hash_entry *entry;
239 struct bfd_hash_table *table;
240 const char *string;
241{
242 struct alpha_elf_link_hash_entry *ret =
243 (struct alpha_elf_link_hash_entry *) entry;
244
245 /* Allocate the structure if it has not already been allocated by a
246 subclass. */
247 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
248 ret = ((struct alpha_elf_link_hash_entry *)
249 bfd_hash_allocate (table,
250 sizeof (struct alpha_elf_link_hash_entry)));
251 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
252 return (struct bfd_hash_entry *) ret;
253
254 /* Call the allocation method of the superclass. */
255 ret = ((struct alpha_elf_link_hash_entry *)
256 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
257 table, string));
258 if (ret != (struct alpha_elf_link_hash_entry *) NULL)
259 {
260 /* Set local fields. */
261 memset (&ret->esym, 0, sizeof (EXTR));
262 /* We use -2 as a marker to indicate that the information has
263 not been set. -1 means there is no associated ifd. */
264 ret->esym.ifd = -2;
37d7888d 265 ret->flags = 0;
ff12f303
ILT		 266 ret->got_entries = NULL;
267 ret->reloc_entries = NULL;
297a4f1a
ILT		 268 }
269
270 return (struct bfd_hash_entry *) ret;
271}
272
273/* Create a Alpha ELF linker hash table. */
274
275static struct bfd_link_hash_table *
276elf64_alpha_bfd_link_hash_table_create (abfd)
277 bfd *abfd;
278{
279 struct alpha_elf_link_hash_table *ret;
280
281 ret = ((struct alpha_elf_link_hash_table *)
282 bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table)));
283 if (ret == (struct alpha_elf_link_hash_table *) NULL)
284 return NULL;
285
286 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
287 elf64_alpha_link_hash_newfunc))
288 {
289 bfd_release (abfd, ret);
290 return NULL;
291 }
292
293 return &ret->root.root;
294}
295\f
ff12f303
ILT		 296/* We have some private fields hanging off of the elf_tdata structure. */
297
298struct alpha_elf_obj_tdata
299{
300 struct elf_obj_tdata root;
301
302 /* For every input file, these are the got entries for that object's
303 local symbols. */
304 struct alpha_elf_got_entry ** local_got_entries;
297a4f1a 305
ff12f303
ILT		 306 /* For every input file, this is the object that owns the got that
307 this input file uses. */
308 bfd *gotobj;
309
310 /* For every got, this is a linked list through the objects using this got */
311 bfd *in_got_link_next;
312
313 /* For every got, this is a link to the next got subsegment. */
314 bfd *got_link_next;
315
316 /* For every got, this is the section. */
317 asection *got;
318
319 /* For every got, this is it's total number of *entries*. */
320 int total_got_entries;
321
322 /* For every got, this is the sum of the number of *entries* required
323 to hold all of the member object's local got. */
324 int n_local_got_entries;
325};
326
327#define alpha_elf_tdata(abfd) \
328 ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any)
329
330static boolean
331elf64_alpha_mkobject (abfd)
332 bfd *abfd;
333{
334 abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata));
335 if (abfd->tdata.any == NULL)
336 return false;
337 return true;
338}
3a13dd8f
RH		 339
340static boolean
341elf64_alpha_object_p (abfd)
342 bfd *abfd;
343{
344 /* Allocate our special target data. */
345 struct alpha_elf_obj_tdata *new_tdata;
346 new_tdata = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata));
347 if (new_tdata == NULL)
348 return false;
349 new_tdata->root = *abfd->tdata.elf_obj_data;
350 abfd->tdata.any = new_tdata;
351
352 /* Set the right machine number for an Alpha ELF file. */
353 return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
354}
ff12f303 355\f
297a4f1a
ILT		 356/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
357 from smaller values. Start with zero, widen, *then* decrement. */
358#define MINUS_ONE (((bfd_vma)0) - 1)
359
360static reloc_howto_type elf64_alpha_howto_table[] =
361{
362 HOWTO (R_ALPHA_NONE, /* type */
363 0, /* rightshift */
364 0, /* size (0 = byte, 1 = short, 2 = long) */
365 8, /* bitsize */
366 true, /* pc_relative */
367 0, /* bitpos */
368 complain_overflow_dont, /* complain_on_overflow */
369 elf64_alpha_reloc_nil, /* special_function */
370 "NONE", /* name */
371 false, /* partial_inplace */
372 0, /* src_mask */
373 0, /* dst_mask */
374 true), /* pcrel_offset */
375
376 /* A 32 bit reference to a symbol. */
377 HOWTO (R_ALPHA_REFLONG, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 32, /* bitsize */
381 false, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_bitfield, /* complain_on_overflow */
384 0, /* special_function */
385 "REFLONG", /* name */
386 false, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 false), /* pcrel_offset */
390
391 /* A 64 bit reference to a symbol. */
392 HOWTO (R_ALPHA_REFQUAD, /* type */
393 0, /* rightshift */
394 4, /* size (0 = byte, 1 = short, 2 = long) */
395 64, /* bitsize */
396 false, /* pc_relative */
397 0, /* bitpos */
398 complain_overflow_bitfield, /* complain_on_overflow */
399 0, /* special_function */
400 "REFQUAD", /* name */
401 false, /* partial_inplace */
402 MINUS_ONE, /* src_mask */
403 MINUS_ONE, /* dst_mask */
404 false), /* pcrel_offset */
405
406 /* A 32 bit GP relative offset. This is just like REFLONG except
407 that when the value is used the value of the gp register will be
408 added in. */
409 HOWTO (R_ALPHA_GPREL32, /* type */
410 0, /* rightshift */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
412 32, /* bitsize */
413 false, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_bitfield, /* complain_on_overflow */
416 0, /* special_function */
417 "GPREL32", /* name */
418 false, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 false), /* pcrel_offset */
422
423 /* Used for an instruction that refers to memory off the GP register. */
424 HOWTO (R_ALPHA_LITERAL, /* type */
425 0, /* rightshift */
426 2, /* size (0 = byte, 1 = short, 2 = long) */
427 16, /* bitsize */
428 false, /* pc_relative */
429 0, /* bitpos */
430 complain_overflow_signed, /* complain_on_overflow */
431 0, /* special_function */
ff12f303 432 "ELF_LITERAL", /* name */
297a4f1a
ILT		 433 false, /* partial_inplace */
434 0xffff, /* src_mask */
435 0xffff, /* dst_mask */
436 false), /* pcrel_offset */
437
ff12f303 438 /* This reloc only appears immediately following an ELF_LITERAL reloc.
297a4f1a
ILT		 439 It identifies a use of the literal. The symbol index is special:
440 1 means the literal address is in the base register of a memory
441 format instruction; 2 means the literal address is in the byte
442 offset register of a byte-manipulation instruction; 3 means the
443 literal address is in the target register of a jsr instruction.
444 This does not actually do any relocation. */
445 HOWTO (R_ALPHA_LITUSE, /* type */
446 0, /* rightshift */
447 2, /* size (0 = byte, 1 = short, 2 = long) */
448 32, /* bitsize */
449 false, /* pc_relative */
450 0, /* bitpos */
451 complain_overflow_dont, /* complain_on_overflow */
452 elf64_alpha_reloc_nil, /* special_function */
453 "LITUSE", /* name */
454 false, /* partial_inplace */
455 0, /* src_mask */
456 0, /* dst_mask */
457 false), /* pcrel_offset */
458
459 /* Load the gp register. This is always used for a ldah instruction
460 which loads the upper 16 bits of the gp register. The symbol
461 index of the GPDISP instruction is an offset in bytes to the lda
462 instruction that loads the lower 16 bits. The value to use for
463 the relocation is the difference between the GP value and the
464 current location; the load will always be done against a register
465 holding the current address.
466
ff12f303 467 NOTE: Unlike ECOFF, partial in-place relocation is not done. If
297a4f1a
ILT		 468 any offset is present in the instructions, it is an offset from
469 the register to the ldah instruction. This lets us avoid any
470 stupid hackery like inventing a gp value to do partial relocation
471 against. Also unlike ECOFF, we do the whole relocation off of
472 the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd,
473 space consuming bit, that, since all the information was present
474 in the GPDISP_HI16 reloc. */
475 HOWTO (R_ALPHA_GPDISP, /* type */
476 16, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
479 false, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_dont, /* complain_on_overflow */
482 elf64_alpha_reloc_gpdisp, /* special_function */
483 "GPDISP", /* name */
484 false, /* partial_inplace */
485 0xffff, /* src_mask */
486 0xffff, /* dst_mask */
487 true), /* pcrel_offset */
488
489 /* A 21 bit branch. */
490 HOWTO (R_ALPHA_BRADDR, /* type */
491 2, /* rightshift */
492 2, /* size (0 = byte, 1 = short, 2 = long) */
493 21, /* bitsize */
494 true, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_signed, /* complain_on_overflow */
497 0, /* special_function */
498 "BRADDR", /* name */
499 false, /* partial_inplace */
500 0x1fffff, /* src_mask */
501 0x1fffff, /* dst_mask */
502 true), /* pcrel_offset */
503
504 /* A hint for a jump to a register. */
505 HOWTO (R_ALPHA_HINT, /* type */
506 2, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 14, /* bitsize */
509 true, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_dont, /* complain_on_overflow */
512 0, /* special_function */
513 "HINT", /* name */
514 false, /* partial_inplace */
515 0x3fff, /* src_mask */
516 0x3fff, /* dst_mask */
517 true), /* pcrel_offset */
518
519 /* 16 bit PC relative offset. */
520 HOWTO (R_ALPHA_SREL16, /* type */
521 0, /* rightshift */
522 1, /* size (0 = byte, 1 = short, 2 = long) */
523 16, /* bitsize */
524 true, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_signed, /* complain_on_overflow */
527 0, /* special_function */
528 "SREL16", /* name */
529 false, /* partial_inplace */
530 0xffff, /* src_mask */
531 0xffff, /* dst_mask */
532 false), /* pcrel_offset */
533
534 /* 32 bit PC relative offset. */
535 HOWTO (R_ALPHA_SREL32, /* type */
536 0, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 32, /* bitsize */
539 true, /* pc_relative */
540 0, /* bitpos */
541 complain_overflow_signed, /* complain_on_overflow */
542 0, /* special_function */
543 "SREL32", /* name */
544 false, /* partial_inplace */
545 0xffffffff, /* src_mask */
546 0xffffffff, /* dst_mask */
547 false), /* pcrel_offset */
548
549 /* A 64 bit PC relative offset. */
550 HOWTO (R_ALPHA_SREL64, /* type */
551 0, /* rightshift */
552 4, /* size (0 = byte, 1 = short, 2 = long) */
553 64, /* bitsize */
554 true, /* pc_relative */
555 0, /* bitpos */
556 complain_overflow_signed, /* complain_on_overflow */
557 0, /* special_function */
558 "SREL64", /* name */
559 false, /* partial_inplace */
560 MINUS_ONE, /* src_mask */
561 MINUS_ONE, /* dst_mask */
562 false), /* pcrel_offset */
563
564 /* Push a value on the reloc evaluation stack. */
3a13dd8f
RH		 565 /* Not implemented -- it's dumb. */
566 HOWTO (R_ALPHA_OP_PUSH, /* type */
297a4f1a
ILT		 567 0, /* rightshift */
568 0, /* size (0 = byte, 1 = short, 2 = long) */
569 0, /* bitsize */
570 false, /* pc_relative */
571 0, /* bitpos */
572 complain_overflow_dont, /* complain_on_overflow */
ff12f303 573 elf64_alpha_reloc_bad, /* special_function */
297a4f1a
ILT		 574 "OP_PUSH", /* name */
575 false, /* partial_inplace */
576 0, /* src_mask */
577 0, /* dst_mask */
578 false), /* pcrel_offset */
579
580 /* Store the value from the stack at the given address. Store it in
581 a bitfield of size r_size starting at bit position r_offset. */
3a13dd8f
RH		 582 /* Not implemented -- it's dumb. */
583 HOWTO (R_ALPHA_OP_STORE, /* type */
297a4f1a
ILT		 584 0, /* rightshift */
585 4, /* size (0 = byte, 1 = short, 2 = long) */
586 64, /* bitsize */
587 false, /* pc_relative */
588 0, /* bitpos */
589 complain_overflow_dont, /* complain_on_overflow */
ff12f303 590 elf64_alpha_reloc_bad, /* special_function */
297a4f1a
ILT		 591 "OP_STORE", /* name */
592 false, /* partial_inplace */
593 0, /* src_mask */
594 MINUS_ONE, /* dst_mask */
595 false), /* pcrel_offset */
596
597 /* Subtract the reloc address from the value on the top of the
598 relocation stack. */
3a13dd8f
RH		 599 /* Not implemented -- it's dumb. */
600 HOWTO (R_ALPHA_OP_PSUB, /* type */
297a4f1a
ILT		 601 0, /* rightshift */
602 0, /* size (0 = byte, 1 = short, 2 = long) */
603 0, /* bitsize */
604 false, /* pc_relative */
605 0, /* bitpos */
606 complain_overflow_dont, /* complain_on_overflow */
ff12f303 607 elf64_alpha_reloc_bad, /* special_function */
297a4f1a
ILT		 608 "OP_PSUB", /* name */
609 false, /* partial_inplace */
610 0, /* src_mask */
611 0, /* dst_mask */
612 false), /* pcrel_offset */
613
614 /* Shift the value on the top of the relocation stack right by the
615 given value. */
3a13dd8f
RH		 616 /* Not implemented -- it's dumb. */
617 HOWTO (R_ALPHA_OP_PRSHIFT, /* type */
297a4f1a
ILT		 618 0, /* rightshift */
619 0, /* size (0 = byte, 1 = short, 2 = long) */
620 0, /* bitsize */
621 false, /* pc_relative */
622 0, /* bitpos */
623 complain_overflow_dont, /* complain_on_overflow */
ff12f303 624 elf64_alpha_reloc_bad, /* special_function */
297a4f1a
ILT		 625 "OP_PRSHIFT", /* name */
626 false, /* partial_inplace */
627 0, /* src_mask */
628 0, /* dst_mask */
629 false), /* pcrel_offset */
630
3a13dd8f
RH		 631 /* Change the value of GP used by +r_addend until the next GPVALUE or the
632 end of the input bfd. */
633 /* Not implemented -- it's dumb. */
634 HOWTO (R_ALPHA_GPVALUE,
635 0, /* rightshift */
636 0, /* size (0 = byte, 1 = short, 2 = long) */
637 0, /* bitsize */
638 false, /* pc_relative */
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 elf64_alpha_reloc_bad, /* special_function */
642 "GPVALUE", /* name */
643 false, /* partial_inplace */
644 0, /* src_mask */
645 0, /* dst_mask */
646 false), /* pcrel_offset */
647
648 /* The high 16 bits of the displacement from GP to the target. */
3a13dd8f
RH		 649 HOWTO (R_ALPHA_GPRELHIGH,
650 0, /* rightshift */
69842d08
RH		 651 2, /* size (0 = byte, 1 = short, 2 = long) */
652 16, /* bitsize */
3a13dd8f
RH		 653 false, /* pc_relative */
654 0, /* bitpos */
69842d08 655 complain_overflow_signed, /* complain_on_overflow */
3a13dd8f
RH		 656 elf64_alpha_reloc_bad, /* special_function */
657 "GPRELHIGH", /* name */
658 false, /* partial_inplace */
69842d08
RH		 659 0xffff, /* src_mask */
660 0xffff, /* dst_mask */
3a13dd8f
RH		 661 false), /* pcrel_offset */
662
663 /* The low 16 bits of the displacement from GP to the target. */
3a13dd8f
RH		 664 HOWTO (R_ALPHA_GPRELLOW,
665 0, /* rightshift */
69842d08
RH		 666 2, /* size (0 = byte, 1 = short, 2 = long) */
667 16, /* bitsize */
3a13dd8f
RH		 668 false, /* pc_relative */
669 0, /* bitpos */
670 complain_overflow_dont, /* complain_on_overflow */
671 elf64_alpha_reloc_bad, /* special_function */
672 "GPRELLOW", /* name */
673 false, /* partial_inplace */
69842d08
RH		 674 0xffff, /* src_mask */
675 0xffff, /* dst_mask */
3a13dd8f
RH		 676 false), /* pcrel_offset */
677
678 /* A 16-bit displacement from the GP to the target. */
679 /* XXX: Not implemented. */
680 HOWTO (R_ALPHA_IMMED_GP_16,
681 0, /* rightshift */
69842d08
RH		 682 2, /* size (0 = byte, 1 = short, 2 = long) */
683 16, /* bitsize */
3a13dd8f
RH		 684 false, /* pc_relative */
685 0, /* bitpos */
69842d08
RH		 686 complain_overflow_signed, /* complain_on_overflow */
687 0, /* special_function */
3a13dd8f
RH		 688 "IMMED_GP_16", /* name */
689 false, /* partial_inplace */
69842d08
RH		 690 0xffff, /* src_mask */
691 0xffff, /* dst_mask */
3a13dd8f
RH		 692 false), /* pcrel_offset */
693
694 /* The high bits of a 32-bit displacement from the GP to the target; the
695 low bits are supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */
696 /* XXX: Not implemented. */
697 HOWTO (R_ALPHA_IMMED_GP_HI32,
698 0, /* rightshift */
699 0, /* size (0 = byte, 1 = short, 2 = long) */
700 0, /* bitsize */
701 false, /* pc_relative */
702 0, /* bitpos */
703 complain_overflow_dont, /* complain_on_overflow */
704 elf64_alpha_reloc_bad, /* special_function */
705 "IMMED_GP_HI32", /* name */
706 false, /* partial_inplace */
707 0, /* src_mask */
708 0, /* dst_mask */
709 false), /* pcrel_offset */
710
711 /* The high bits of a 32-bit displacement to the starting address of the
712 current section (the relocation target is ignored); the low bits are
713 supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */
714 /* XXX: Not implemented. */
715 HOWTO (R_ALPHA_IMMED_SCN_HI32,
716 0, /* rightshift */
717 0, /* size (0 = byte, 1 = short, 2 = long) */
718 0, /* bitsize */
719 false, /* pc_relative */
720 0, /* bitpos */
721 complain_overflow_dont, /* complain_on_overflow */
722 elf64_alpha_reloc_bad, /* special_function */
723 "IMMED_SCN_HI32", /* name */
724 false, /* partial_inplace */
725 0, /* src_mask */
726 0, /* dst_mask */
727 false), /* pcrel_offset */
728
729 /* The high bits of a 32-bit displacement from the previous br, bsr, jsr
730 or jmp insn (as tagged by a BRADDR or HINT reloc) to the target; the
731 low bits are supplied by subsequent R_ALPHA_IMMED_LO32 relocs. */
732 /* XXX: Not implemented. */
733 HOWTO (R_ALPHA_IMMED_BR_HI32,
734 0, /* rightshift */
735 0, /* size (0 = byte, 1 = short, 2 = long) */
736 0, /* bitsize */
737 false, /* pc_relative */
738 0, /* bitpos */
739 complain_overflow_dont, /* complain_on_overflow */
740 elf64_alpha_reloc_bad, /* special_function */
741 "IMMED_BR_HI32", /* name */
742 false, /* partial_inplace */
743 0, /* src_mask */
744 0, /* dst_mask */
745 false), /* pcrel_offset */
746
747 /* The low 16 bits of a displacement calculated in a previous HI32 reloc. */
748 /* XXX: Not implemented. */
749 HOWTO (R_ALPHA_IMMED_LO32,
750 0, /* rightshift */
751 0, /* size (0 = byte, 1 = short, 2 = long) */
752 0, /* bitsize */
753 false, /* pc_relative */
754 0, /* bitpos */
755 complain_overflow_dont, /* complain_on_overflow */
756 elf64_alpha_reloc_bad, /* special_function */
757 "IMMED_LO32", /* name */
758 false, /* partial_inplace */
759 0, /* src_mask */
760 0, /* dst_mask */
761 false), /* pcrel_offset */
762
297a4f1a 763 /* Misc ELF relocations. */
3a13dd8f
RH		 764
765 /* A dynamic relocation to copy the target into our .dynbss section. */
766 /* Not generated, as all Alpha objects use PIC, so it is not needed. It
767 is present because every other ELF has one, but should not be used
768 because .dynbss is an ugly thing. */
297a4f1a
ILT		 769 HOWTO (R_ALPHA_COPY,
770 0,
771 0,
772 0,
773 false,
774 0,
775 complain_overflow_dont,
776 bfd_elf_generic_reloc,
777 "COPY",
778 false,
779 0,
ff12f303 780 0,
297a4f1a
ILT		 781 true),
782
3a13dd8f 783 /* A dynamic relocation for a .got entry. */
297a4f1a
ILT		 784 HOWTO (R_ALPHA_GLOB_DAT,
785 0,
786 0,
787 0,
788 false,
789 0,
790 complain_overflow_dont,
791 bfd_elf_generic_reloc,
792 "GLOB_DAT",
793 false,
794 0,
ff12f303 795 0,
297a4f1a
ILT		 796 true),
797
3a13dd8f 798 /* A dynamic relocation for a .plt entry. */
297a4f1a
ILT		 799 HOWTO (R_ALPHA_JMP_SLOT,
800 0,
801 0,
802 0,
803 false,
804 0,
805 complain_overflow_dont,
806 bfd_elf_generic_reloc,
807 "JMP_SLOT",
808 false,
809 0,
810 0,
811 true),
812
3a13dd8f 813 /* A dynamic relocation to add the base of the DSO to a 64-bit field. */
297a4f1a
ILT		 814 HOWTO (R_ALPHA_RELATIVE,
815 0,
816 0,
817 0,
818 false,
819 0,
820 complain_overflow_dont,
821 bfd_elf_generic_reloc,
ff12f303 822 "RELATIVE",
297a4f1a
ILT		 823 false,
824 0,
825 0,
826 true)
827};
828
ff12f303
ILT		 829/* A relocation function which doesn't do anything. */
830
297a4f1a
ILT		 831static bfd_reloc_status_type
832elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message)
833 bfd *abfd;
834 arelent *reloc;
835 asymbol *sym;
836 PTR data;
837 asection *sec;
838 bfd *output_bfd;
839 char **error_message;
840{
841 if (output_bfd)
842 reloc->address += sec->output_offset;
843 return bfd_reloc_ok;
844}
845
ff12f303
ILT		 846/* A relocation function used for an unsupported reloc. */
847
848static bfd_reloc_status_type
849elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message)
850 bfd *abfd;
851 arelent *reloc;
852 asymbol *sym;
853 PTR data;
854 asection *sec;
855 bfd *output_bfd;
856 char **error_message;
857{
858 if (output_bfd)
859 reloc->address += sec->output_offset;
860 return bfd_reloc_notsupported;
861}
862
863/* Do the work of the GPDISP relocation. */
864
297a4f1a
ILT		 865static bfd_reloc_status_type
866elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda)
867 bfd *abfd;
868 bfd_vma gpdisp;
ff12f303
ILT		 869 bfd_byte *p_ldah;
870 bfd_byte *p_lda;
297a4f1a
ILT		 871{
872 bfd_reloc_status_type ret = bfd_reloc_ok;
873 bfd_vma addend;
874 unsigned long i_ldah, i_lda;
875
ff12f303
ILT		 876 i_ldah = bfd_get_32 (abfd, p_ldah);
877 i_lda = bfd_get_32 (abfd, p_lda);
297a4f1a
ILT		 878
879 /* Complain if the instructions are not correct. */
880 if (((i_ldah >> 26) & 0x3f) != 0x09
881 || ((i_lda >> 26) & 0x3f) != 0x08)
882 ret = bfd_reloc_dangerous;
883
884 /* Extract the user-supplied offset, mirroring the sign extensions
885 that the instructions perform. */
886 addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff);
887 addend = (addend ^ 0x80008000) - 0x80008000;
888
889 gpdisp += addend;
890
ff12f303 891 if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma)0x80000000
297a4f1a
ILT		 892 || gpdisp >= 0x7fff8000)
893 ret = bfd_reloc_overflow;
894
895 /* compensate for the sign extension again. */
896 i_ldah = ((i_ldah & 0xffff0000)
897 | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff));
898 i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff);
899
900 bfd_put_32 (abfd, i_ldah, p_ldah);
901 bfd_put_32 (abfd, i_lda, p_lda);
902
903 return ret;
904}
905
ff12f303
ILT		 906/* The special function for the GPDISP reloc. */
907
297a4f1a
ILT		 908static bfd_reloc_status_type
909elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section,
910 output_bfd, err_msg)
911 bfd *abfd;
912 arelent *reloc_entry;
913 asymbol *sym;
914 PTR data;
915 asection *input_section;
916 bfd *output_bfd;
917 char **err_msg;
918{
919 bfd_reloc_status_type ret;
920 bfd_vma gp, relocation;
921 bfd_byte *p_ldah, *p_lda;
922
923 /* Don't do anything if we're not doing a final link. */
924 if (output_bfd)
925 {
926 reloc_entry->address += input_section->output_offset;
927 return bfd_reloc_ok;
928 }
929
930 if (reloc_entry->address > input_section->_cooked_size ||
931 reloc_entry->address + reloc_entry->addend > input_section->_cooked_size)
932 return bfd_reloc_outofrange;
933
ff12f303 934 /* The gp used in the portion of the output object to which this
297a4f1a
ILT		 935 input object belongs is cached on the input bfd. */
936 gp = _bfd_get_gp_value (abfd);
937
938 relocation = (input_section->output_section->vma
939 + input_section->output_offset
940 + reloc_entry->address);
941
ff12f303 942 p_ldah = (bfd_byte *) data + reloc_entry->address;
297a4f1a
ILT		 943 p_lda = p_ldah + reloc_entry->addend;
944
945 ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda);
946
947 /* Complain if the instructions are not correct. */
948 if (ret == bfd_reloc_dangerous)
ff12f303 949 *err_msg = "GPDISP relocation did not find ldah and lda instructions";
297a4f1a
ILT		 950
951 return ret;
952}
953
297a4f1a
ILT		 954/* A mapping from BFD reloc types to Alpha ELF reloc types. */
955
956struct elf_reloc_map
957{
958 bfd_reloc_code_real_type bfd_reloc_val;
959 int elf_reloc_val;
960};
961
962static const struct elf_reloc_map elf64_alpha_reloc_map[] =
963{
964 {BFD_RELOC_NONE, R_ALPHA_NONE},
965 {BFD_RELOC_32, R_ALPHA_REFLONG},
966 {BFD_RELOC_64, R_ALPHA_REFQUAD},
967 {BFD_RELOC_CTOR, R_ALPHA_REFQUAD},
968 {BFD_RELOC_GPREL32, R_ALPHA_GPREL32},
ff12f303 969 {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL},
297a4f1a
ILT		 970 {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE},
971 {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP},
ff12f303
ILT		 972 {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR},
973 {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT},
974 {BFD_RELOC_16_PCREL, R_ALPHA_SREL16},
975 {BFD_RELOC_32_PCREL, R_ALPHA_SREL32},
976 {BFD_RELOC_64_PCREL, R_ALPHA_SREL64},
297a4f1a
ILT		 977};
978
979/* Given a BFD reloc type, return a HOWTO structure. */
980
981static reloc_howto_type *
982elf64_alpha_bfd_reloc_type_lookup (abfd, code)
983 bfd *abfd;
984 bfd_reloc_code_real_type code;
985{
986 const struct elf_reloc_map *i, *e;
987 i = e = elf64_alpha_reloc_map;
988 e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map);
989 for (; i != e; ++i)
990 {
991 if (i->bfd_reloc_val == code)
992 return &elf64_alpha_howto_table[i->elf_reloc_val];
993 }
994 return 0;
995}
996
997/* Given an Alpha ELF reloc type, fill in an arelent structure. */
998
999static void
1000elf64_alpha_info_to_howto (abfd, cache_ptr, dst)
1001 bfd *abfd;
1002 arelent *cache_ptr;
1003 Elf64_Internal_Rela *dst;
1004{
1005 unsigned r_type;
1006
1007 r_type = ELF64_R_TYPE(dst->r_info);
1008 BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max);
1009 cache_ptr->howto = &elf64_alpha_howto_table[r_type];
1010}
1011\f
69842d08
RH		 1012/* These functions do relaxation for Alpha ELF.
1013
1014 Currently I'm only handling what I can do with existing compiler
1015 and assembler support, which means no instructions are removed,
1016 though some may be nopped. At this time GCC does not emit enough
1017 information to do all of the relaxing that is possible. It will
1018 take some not small amount of work for that to happen.
1019
1020 There are a couple of interesting papers that I once read on this
1021 subject, that I cannot find references to at the moment, that
1022 related to Alpha in particular. They are by David Wall, then of
1023 DEC WRL. */
1024
1025#define OP_LDA 0x08
1026#define OP_LDAH 0x09
1027#define INSN_JSR 0x68004000
1028#define INSN_JSR_MASK 0xfc00c000
1029#define OP_LDQ 0x29
1030#define OP_BR 0x30
1031#define OP_BSR 0x34
1032#define INSN_UNOP 0x2fe00000
1033
1034struct alpha_relax_info
1035{
1036 bfd *abfd;
1037 asection *sec;
1038 bfd_byte *contents;
1039 Elf_Internal_Rela *relocs, *relend;
1040 struct bfd_link_info *link_info;
1041 boolean changed_contents;
1042 boolean changed_relocs;
1043 bfd_vma gp;
1044 bfd *gotobj;
1045 struct alpha_elf_link_hash_entry *h;
1046 struct alpha_elf_got_entry *gotent;
1047};
1048
1049static Elf_Internal_Rela * elf64_alpha_relax_with_lituse
1050 PARAMS((struct alpha_relax_info *info, bfd_vma symval,
1051 Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend));
1052
1053static boolean elf64_alpha_relax_without_lituse
1054 PARAMS((struct alpha_relax_info *info, bfd_vma symval,
1055 Elf_Internal_Rela *irel));
1056
1057static bfd_vma elf64_alpha_relax_opt_call
1058 PARAMS((struct alpha_relax_info *info, bfd_vma symval));
1059
1060static boolean elf64_alpha_relax_section
1061 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
1062 boolean *again));
1063
1064static Elf_Internal_Rela *
1065elf64_alpha_relax_find_reloc_ofs (rel, relend, offset, type)
1066 Elf_Internal_Rela *rel, *relend;
1067 bfd_vma offset;
1068 int type;
1069{
1070 while (rel < relend)
1071 {
1072 if (rel->r_offset == offset && ELF64_R_TYPE (rel->r_info) == type)
1073 return rel;
1074 ++rel;
1075 }
1076 return NULL;
1077}
1078
1079static Elf_Internal_Rela *
1080elf64_alpha_relax_with_lituse (info, symval, irel, irelend)
1081 struct alpha_relax_info *info;
1082 bfd_vma symval;
1083 Elf_Internal_Rela *irel, *irelend;
1084{
1085 Elf_Internal_Rela *urel;
1086 int flags, count, i;
1087 bfd_signed_vma disp;
1088 boolean fits16;
1089 boolean fits32;
1090 boolean lit_reused = false;
1091 boolean all_optimized = true;
1092 unsigned int lit_insn;
1093
1094 lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
1095 if (lit_insn >> 26 != OP_LDQ)
1096 {
1097 ((*_bfd_error_handler)
1098 ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn",
1099 bfd_get_filename (info->abfd), info->sec->name,
1100 (unsigned long)irel->r_offset));
1101 return irel;
1102 }
1103
1104 /* Summarize how this particular LITERAL is used. */
1105 for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count)
1106 {
1107 if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE)
1108 break;
1109 if (urel->r_addend >= 0 && urel->r_addend <= 3)
1110 flags |= 1 << urel->r_addend;
1111 }
1112
1113 /* A little preparation for the loop... */
1114 disp = symval - info->gp;
1115 fits16 = (disp >= -(bfd_signed_vma)0x8000 && disp < 0x8000);
1116 fits32 = (disp >= -(bfd_signed_vma)0x80000000 && disp < 0x7fff8000);
1117
1118 for (urel = irel+1, i = 0; i < count; ++i, ++urel)
1119 {
1120 unsigned int insn;
1121 insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset);
1122
1123 switch (urel->r_addend)
1124 {
1125 default: /* 0 = ADDRESS FORMAT */
1126 /* This type is really just a placeholder to note that all
1127 uses cannot be optimized, but to still allow some. */
1128 all_optimized = false;
1129 break;
1130
1131 case 1: /* MEM FORMAT */
1132 /* We can always optimize 16-bit displacements. */
1133 if (fits16)
1134 {
1135 /* FIXME: sanity check the insn for mem format with
1136 zero addend. */
1137
1138 /* Take the op code and dest from this insn, take the base
1139 register from the literal insn. Leave the offset alone. */
1140 insn = (insn & 0xffe00000) | (lit_insn & 0x001f0000);
1141 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1142 R_ALPHA_GPRELLOW);
1143 urel->r_addend = irel->r_addend;
1144 info->changed_relocs = true;
1145
1146 bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset);
1147 info->changed_contents = true;
1148 }
1149
1150 /* If all mem+byte, we can optimize 32-bit mem displacements. */
1151 else if (fits32 && !(flags & ~6))
1152 {
1153 /* FIXME: sanity check that lit insn Ra is mem insn Rb, and
1154 that mem_insn disp is zero. */
1155
1156 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1157 R_ALPHA_GPRELHIGH);
1158 lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000);
1159 bfd_put_32 (info->abfd, lit_insn,
1160 info->contents + irel->r_offset);
1161 lit_reused = true;
1162 info->changed_contents = true;
1163
1164 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1165 R_ALPHA_GPRELLOW);
1166 urel->r_addend = irel->r_addend;
1167 info->changed_relocs = true;
1168 }
1169 else
1170 all_optimized = false;
1171 break;
1172
1173 case 2: /* BYTE OFFSET FORMAT */
1174 /* We can always optimize byte instructions. */
1175
1176 /* FIXME: sanity check the insn for byte op. Check that the
1177 literal dest reg is indeed Rb in the byte insn. */
1178
1179 insn = (insn & ~0x001ff000) | ((symval & 7) << 13) | 0x1000;
1180
1181 urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1182 urel->r_addend = 0;
1183 info->changed_relocs = true;
1184
1185 bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset);
1186 info->changed_contents = true;
1187 break;
1188
1189 case 3: /* CALL FORMAT */
1190 {
1191 /* If not zero, place to jump without needing pv. */
1192 bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval);
1193 bfd_vma org = (info->sec->output_section->vma
1194 + info->sec->output_offset
1195 + urel->r_offset + 4);
1196 bfd_signed_vma odisp;
1197
1198 odisp = (optdest ? optdest : symval) - org;
1199 if (odisp >= -0x400000 && odisp < 0x400000)
1200 {
1201 Elf_Internal_Rela *xrel;
1202
1203 /* Preserve branch prediction call stack when possible. */
1204 if ((insn & INSN_JSR_MASK) == INSN_JSR)
1205 insn = (OP_BSR << 26) | (insn & 0x03e00000);
1206 else
1207 insn = (OP_BR << 26) | (insn & 0x03e00000);
1208
1209 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1210 R_ALPHA_BRADDR);
1211 urel->r_addend = irel->r_addend;
1212 info->changed_relocs = true;
1213
1214 /* Kill any HINT reloc that might exist for this insn. */
1215 xrel = (elf64_alpha_relax_find_reloc_ofs
1216 (info->relocs, info->relend, urel->r_offset,
1217 R_ALPHA_HINT));
1218 if (xrel)
1219 xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1220
1221 if (optdest)
1222 urel->r_addend += optdest - symval;
1223 else
1224 all_optimized = false;
1225
1226 bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset);
1227 info->changed_contents = true;
1228 }
1229 else
1230 all_optimized = false;
1231
1232 /* ??? If target gp == current gp we can eliminate the gp reload.
1233 This does depend on every place a gp could be reloaded will
1234 be, which currently happens for all code produced by gcc, but
1235 not necessarily by hand-coded assembly, or if sibling calls
1236 are enabled in gcc.
1237
1238 Perhaps conditionalize this on a flag being set in the target
1239 object file's header, and have gcc set it? */
1240 }
1241 break;
1242 }
1243 }
1244
1245 /* If all cases were optimized, we can reduce the use count on this
1246 got entry by one, possibly eliminating it. */
1247 if (all_optimized)
1248 {
1249 info->gotent->use_count -= 1;
1250 alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1;
1251 if (!info->h)
1252 alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1;
1253
1254 /* If the literal instruction is no longer needed (it may have been
1255 reused. We can eliminate it.
1256 ??? For now, I don't want to deal with compacting the section,
1257 so just nop it out. */
1258 if (!lit_reused)
1259 {
1260 irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1261 info->changed_relocs = true;
1262
1263 bfd_put_32 (info->abfd, INSN_UNOP, info->contents + irel->r_offset);
1264 info->changed_contents = true;
1265 }
1266 }
1267
1268 return irel + count;
1269}
1270
1271static bfd_vma
1272elf64_alpha_relax_opt_call (info, symval)
1273 struct alpha_relax_info *info;
1274 bfd_vma symval;
1275{
1276 /* If the function has the same gp, and we can identify that the
1277 function does not use its function pointer, we can eliminate the
1278 address load.
1279
1280 ??? The .prologue [0,1] information is what we need. How do we
1281 get it out of the mdebug uglyness? What shall we do when we drop
1282 that crap for dwarf2?
1283
1284 For now, only consider the case in which there is an identifyable
1285 GP load in the first two words. We can then skip over that load. */
1286
1287 return 0;
1288}
1289
1290static boolean
1291elf64_alpha_relax_without_lituse (info, symval, irel)
1292 struct alpha_relax_info *info;
1293 bfd_vma symval;
1294 Elf_Internal_Rela *irel;
1295{
1296 unsigned int insn;
1297 bfd_signed_vma disp;
1298
1299 /* Get the instruction. */
1300 insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
1301
1302 if (insn >> 26 != OP_LDQ)
1303 {
1304 ((*_bfd_error_handler)
1305 ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn",
1306 bfd_get_filename (info->abfd), info->sec->name,
1307 (unsigned long) irel->r_offset));
1308 return true;
1309 }
1310
1311 /* So we aren't told much. Do what we can with the address load and
1312 fake the rest. All of the optimizations here require that the
1313 offset from the GP fit in 16 bits. */
1314
1315 disp = symval - info->gp;
1316 if (disp < -0x8000 || disp >= 0x8000)
1317 return true;
1318
1319 /* On the LITERAL instruction itself, consider exchanging
1320 `ldq R,X(gp)' for `lda R,Y(gp)'. */
1321
1322 insn = (OP_LDA << 26) | (insn & 0x03ff0000);
1323 bfd_put_32 (info->abfd, insn, info->contents + irel->r_offset);
1324 info->changed_contents = true;
1325
1326 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPRELLOW);
1327 info->changed_relocs = true;
1328
1329 /* Reduce the use count on this got entry by one, possibly
1330 eliminating it. */
1331 info->gotent->use_count -= 1;
1332 alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1;
1333 if (!info->h)
1334 alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1;
1335
1336 /* ??? Search forward through this basic block looking for insns
1337 that use the target register. Stop after an insn modifying the
1338 register is seen, or after a branch or call.
1339
1340 Any such memory load insn may be substituted by a load directly
1341 off the GP. This allows the memory load insn to be issued before
1342 the calculated GP register would otherwise be ready.
1343
1344 Any such jsr insn can be replaced by a bsr if it is in range.
1345
1346 This would mean that we'd have to _add_ relocations, the pain of
1347 which gives one pause. */
1348
1349 return true;
1350}
1351
1352static boolean
1353elf64_alpha_relax_section (abfd, sec, link_info, again)
1354 bfd *abfd;
1355 asection *sec;
1356 struct bfd_link_info *link_info;
1357 boolean *again;
1358{
1359 Elf_Internal_Shdr *symtab_hdr;
1360 Elf_Internal_Rela *internal_relocs;
1361 Elf_Internal_Rela *free_relocs = NULL;
1362 Elf_Internal_Rela *irel, *irelend;
1363 bfd_byte *free_contents = NULL;
1364 Elf64_External_Sym *extsyms = NULL;
1365 Elf64_External_Sym *free_extsyms = NULL;
1366 struct alpha_elf_got_entry **local_got_entries;
1367 struct alpha_relax_info info;
1368
1369 /* We are not currently changing any sizes, so only one pass. */
1370 *again = false;
1371
1372 if (link_info->relocateable
1373 || (sec->flags & SEC_RELOC) == 0
1374 || sec->reloc_count == 0)
1375 return true;
1376
1377 /* If this is the first time we have been called for this section,
1378 initialize the cooked size. */
1379 if (sec->_cooked_size == 0)
1380 sec->_cooked_size = sec->_raw_size;
1381
1382 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1383 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
1384
1385 /* Load the relocations for this section. */
1386 internal_relocs = (_bfd_elf64_link_read_relocs
1387 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1388 link_info->keep_memory));
1389 if (internal_relocs == NULL)
1390 goto error_return;
1391 if (! link_info->keep_memory)
1392 free_relocs = internal_relocs;
1393
1394 memset(&info, 0, sizeof(info));
1395 info.abfd = abfd;
1396 info.sec = sec;
1397 info.link_info = link_info;
1398 info.relocs = internal_relocs;
1399 info.relend = irelend = internal_relocs + sec->reloc_count;
1400
1401 /* Find the GP for this object. */
1402 info.gotobj = alpha_elf_tdata (abfd)->gotobj;
1403 if (info.gotobj)
1404 {
1405 asection *sgot = alpha_elf_tdata (info.gotobj)->got;
1406 info.gp = _bfd_get_gp_value (info.gotobj);
1407 if (info.gp == 0)
1408 {
1409 info.gp = (sgot->output_section->vma
1410 + sgot->output_offset
1411 + 0x8000);
1412 _bfd_set_gp_value (info.gotobj, info.gp);
1413 }
1414 }
1415
1416 for (irel = internal_relocs; irel < irelend; irel++)
1417 {
1418 bfd_vma symval;
1419 unsigned int insn;
1420
1421 if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL)
1422 continue;
1423
1424 /* Get the section contents. */
1425 if (info.contents == NULL)
1426 {
1427 if (elf_section_data (sec)->this_hdr.contents != NULL)
1428 info.contents = elf_section_data (sec)->this_hdr.contents;
1429 else
1430 {
1431 info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
1432 if (info.contents == NULL)
1433 goto error_return;
1434 free_contents = info.contents;
1435
1436 if (! bfd_get_section_contents (abfd, sec, info.contents,
1437 (file_ptr) 0, sec->_raw_size))
1438 goto error_return;
1439 }
1440 }
1441
1442 /* Read this BFD's symbols if we haven't done so already. */
1443 if (extsyms == NULL)
1444 {
1445 if (symtab_hdr->contents != NULL)
1446 extsyms = (Elf64_External_Sym *) symtab_hdr->contents;
1447 else
1448 {
1449 extsyms = ((Elf64_External_Sym *)
1450 bfd_malloc (symtab_hdr->sh_size));
1451 if (extsyms == NULL)
1452 goto error_return;
1453 free_extsyms = extsyms;
1454 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
1455 || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd)
1456 != symtab_hdr->sh_size))
1457 goto error_return;
1458 }
1459 }
1460
1461 /* Get the value of the symbol referred to by the reloc. */
1462 if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1463 {
1464 Elf_Internal_Sym isym;
1465
1466 /* A local symbol. */
1467 bfd_elf64_swap_symbol_in (abfd,
1468 extsyms + ELF64_R_SYM (irel->r_info),
1469 &isym);
1470
1471 info.h = NULL;
1472 info.gotent = local_got_entries[ELF64_R_SYM(irel->r_info)];
1473 symval = (isym.st_value
1474 + sec->output_section->vma
1475 + sec->output_offset);
1476 }
1477 else
1478 {
1479 unsigned long indx;
1480 struct alpha_elf_link_hash_entry *h;
1481 struct alpha_elf_got_entry *gotent;
1482
1483 indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1484 h = alpha_elf_sym_hashes (abfd)[indx];
1485 BFD_ASSERT (h != NULL);
1486
1487 /* We can't do anthing with undefined or dynamic symbols. */
1488 if (h->root.root.type == bfd_link_hash_undefined
1489 || h->root.root.type == bfd_link_hash_undefweak
1490 || alpha_elf_dynamic_symbol_p (&h->root, link_info))
1491 continue;
1492
1493 /* Search for the got entry to be used by this relocation. */
1494 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
1495 if (gotent->gotobj == info.gotobj
1496 && gotent->addend == irel->r_addend)
1497 break;
1498
1499 info.h = h;
1500 info.gotent = gotent;
1501 symval = (h->root.root.u.def.value
1502 + h->root.root.u.def.section->output_section->vma
1503 + h->root.root.u.def.section->output_offset);
1504 }
1505 symval += irel->r_addend;
1506
1507 BFD_ASSERT(info.gotent != NULL);
1508
1509 /* If there exist LITUSE relocations immediately following, this
1510 opens up all sorts of interesting optimizations, because we
1511 now know every location that this address load is used. */
1512
1513 if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE)
1514 {
1515 irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend);
1516 if (irel == NULL)
1517 goto error_return;
1518 }
1519 else
1520 {
1521 if (!elf64_alpha_relax_without_lituse (&info, symval, irel))
1522 goto error_return;
1523 }
1524 }
1525
1526 if (!elf64_alpha_size_got_sections (abfd, link_info))
1527 return false;
1528
1529 if (info.changed_relocs)
1530 {
1531 elf_section_data (sec)->relocs = internal_relocs;
1532 }
1533 else if (free_relocs != NULL)
1534 {
1535 free (free_relocs);
1536 }
1537
1538 if (info.changed_contents)
1539 {
1540 elf_section_data (sec)->this_hdr.contents = info.contents;
1541 }
1542 else if (free_contents != NULL)
1543 {
1544 if (! link_info->keep_memory)
1545 free (free_contents);
1546 else
1547 {
1548 /* Cache the section contents for elf_link_input_bfd. */
1549 elf_section_data (sec)->this_hdr.contents = info.contents;
1550 }
1551 }
1552
1553 if (free_extsyms != NULL)
1554 {
1555 if (! link_info->keep_memory)
1556 free (free_extsyms);
1557 else
1558 {
1559 /* Cache the symbols for elf_link_input_bfd. */
1560 symtab_hdr->contents = extsyms;
1561 }
1562 }
1563
1564 return true;
1565
1566 error_return:
1567 if (free_relocs != NULL)
1568 free (free_relocs);
1569 if (free_contents != NULL)
1570 free (free_contents);
1571 if (free_extsyms != NULL)
1572 free (free_extsyms);
1573 return false;
1574}
1575\f
297a4f1a
ILT		 1576/* PLT/GOT Stuff */
1577#define PLT_HEADER_SIZE 32
1578#define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */
1579#define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */
1580#define PLT_HEADER_WORD3 0x47ff041f /* nop */
1581#define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */
1582
1583#define PLT_ENTRY_SIZE 12
3a13dd8f
RH		 1584#define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */
1585#define PLT_ENTRY_WORD2 0
1586#define PLT_ENTRY_WORD3 0
297a4f1a 1587
ff12f303 1588#define MAX_GOT_ENTRIES (64*1024 / 8)
297a4f1a
ILT		 1589
1590#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so"
1591\f
ff12f303 1592/* Handle an Alpha specific section when reading an object file. This
297a4f1a 1593 is called when elfcode.h finds a section with an unknown type.
69842d08 1594 FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure
297a4f1a
ILT		 1595 how to. */
1596
1597static boolean
1598elf64_alpha_section_from_shdr (abfd, hdr, name)
1599 bfd *abfd;
1600 Elf64_Internal_Shdr *hdr;
1601 char *name;
1602{
1603 asection *newsect;
1604
1605 /* There ought to be a place to keep ELF backend specific flags, but
1606 at the moment there isn't one. We just keep track of the
1607 sections by their name, instead. Fortunately, the ABI gives
1608 suggested names for all the MIPS specific sections, so we will
1609 probably get away with this. */
1610 switch (hdr->sh_type)
1611 {
1612 case SHT_ALPHA_DEBUG:
1613 if (strcmp (name, ".mdebug") != 0)
1614 return false;
1615 break;
1616#ifdef ERIC_neverdef
1617 case SHT_ALPHA_REGINFO:
1618 if (strcmp (name, ".reginfo") != 0
1619 || hdr->sh_size != sizeof (Elf64_External_RegInfo))
1620 return false;
1621 break;
1622#endif
1623 default:
1624 return false;
1625 }
1626
1627 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1628 return false;
1629 newsect = hdr->bfd_section;
1630
1631 if (hdr->sh_type == SHT_ALPHA_DEBUG)
1632 {
1633 if (! bfd_set_section_flags (abfd, newsect,
1634 (bfd_get_section_flags (abfd, newsect)
1635 | SEC_DEBUGGING)))
1636 return false;
1637 }
1638
1639#ifdef ERIC_neverdef
1640 /* For a .reginfo section, set the gp value in the tdata information
1641 from the contents of this section. We need the gp value while
1642 processing relocs, so we just get it now. */
1643 if (hdr->sh_type == SHT_ALPHA_REGINFO)
1644 {
1645 Elf64_External_RegInfo ext;
1646 Elf64_RegInfo s;
1647
1648 if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext,
1649 (file_ptr) 0, sizeof ext))
1650 return false;
1651 bfd_alpha_elf64_swap_reginfo_in (abfd, &ext, &s);
1652 elf_gp (abfd) = s.ri_gp_value;
1653 }
1654#endif
1655
1656 return true;
1657}
1658
1659/* Set the correct type for an Alpha ELF section. We do this by the
1660 section name, which is a hack, but ought to work. */
1661
1662static boolean
1663elf64_alpha_fake_sections (abfd, hdr, sec)
1664 bfd *abfd;
1665 Elf64_Internal_Shdr *hdr;
1666 asection *sec;
1667{
1668 register const char *name;
1669
1670 name = bfd_get_section_name (abfd, sec);
1671
1672 if (strcmp (name, ".mdebug") == 0)
1673 {
1674 hdr->sh_type = SHT_ALPHA_DEBUG;
1675 /* In a shared object on Irix 5.3, the .mdebug section has an
1676 entsize of 0. FIXME: Does this matter? */
1677 if ((abfd->flags & DYNAMIC) != 0 )
1678 hdr->sh_entsize = 0;
1679 else
1680 hdr->sh_entsize = 1;
1681 }
1682#ifdef ERIC_neverdef
1683 else if (strcmp (name, ".reginfo") == 0)
1684 {
1685 hdr->sh_type = SHT_ALPHA_REGINFO;
1686 /* In a shared object on Irix 5.3, the .reginfo section has an
1687 entsize of 0x18. FIXME: Does this matter? */
1688 if ((abfd->flags & DYNAMIC) != 0)
1689 hdr->sh_entsize = sizeof (Elf64_External_RegInfo);
1690 else
1691 hdr->sh_entsize = 1;
1692
1693 /* Force the section size to the correct value, even if the
1694 linker thinks it is larger. The link routine below will only
1695 write out this much data for .reginfo. */
1696 hdr->sh_size = sec->_raw_size = sizeof (Elf64_External_RegInfo);
1697 }
1698 else if (strcmp (name, ".hash") == 0
1699 || strcmp (name, ".dynamic") == 0
1700 || strcmp (name, ".dynstr") == 0)
1701 {
1702 hdr->sh_entsize = 0;
1703 hdr->sh_info = SIZEOF_ALPHA_DYNSYM_SECNAMES;
1704 }
ff12f303 1705#endif
297a4f1a
ILT		 1706 else if (strcmp (name, ".sdata") == 0
1707 || strcmp (name, ".sbss") == 0
1708 || strcmp (name, ".lit4") == 0
1709 || strcmp (name, ".lit8") == 0)
1710 hdr->sh_flags |= SHF_ALPHA_GPREL;
297a4f1a
ILT		 1711
1712 return true;
1713}
1714
69842d08
RH		 1715/* Hook called by the linker routine which adds symbols from an object
1716 file. We use it to put .comm items in .sbss, and not .bss. */
1717
1718static boolean
1719elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1720 bfd *abfd;
1721 struct bfd_link_info *info;
1722 const Elf_Internal_Sym *sym;
1723 const char **namep;
1724 flagword *flagsp;
1725 asection **secp;
1726 bfd_vma *valp;
1727{
1728 if (sym->st_shndx == SHN_COMMON
1729 && !info->relocateable
1730 && sym->st_size <= bfd_get_gp_size (abfd))
1731 {
1732 /* Common symbols less than or equal to -G nn bytes are
1733 automatically put into .sbss. */
1734
1735 asection *sbss = bfd_get_section_by_name (abfd, ".sbss");
1736
1737 if (sbss == NULL)
1738 {
1739 sbss = bfd_make_section (abfd, ".sbss");
1740 if (sbss == NULL
1741 || !bfd_set_section_flags (abfd, sbss, (SEC_ALLOC | SEC_LOAD
1742 | SEC_IS_COMMON
1743 | SEC_LINKER_CREATED)))
1744 return false;
1745 }
1746
1747 if (bfd_get_section_alignment (abfd, sbss) < sym->st_value)
1748 {
1749 if (!bfd_set_section_alignment (abfd, sbss, sym->st_value))
1750 return false;
1751 }
1752
1753 *secp = sbss;
1754 *valp = sym->st_size;
1755 }
1756
1757 return true;
1758}
1759
ff12f303
ILT		 1760/* Return the number of additional phdrs we will need. */
1761
297a4f1a
ILT		 1762static int
1763elf64_alpha_additional_program_headers (abfd)
1764 bfd *abfd;
1765{
1766 asection *s;
1767 int ret;
1768
1769 ret = 0;
1770
1771 s = bfd_get_section_by_name (abfd, ".reginfo");
1772 if (s != NULL && (s->flags & SEC_LOAD) != 0)
1773 {
1774 /* We need a PT_ALPHA_REGINFO segment. */
1775 ++ret;
1776 }
1777
1778 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL
1779 && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
1780 {
1781 /* We need a PT_ALPHA_RTPROC segment. */
1782 ++ret;
1783 }
1784
1785 return ret;
1786}
1787
ff12f303
ILT		 1788/* Create the .got section. */
1789
297a4f1a
ILT		 1790static boolean
1791elf64_alpha_create_got_section(abfd, info)
1792 bfd *abfd;
1793 struct bfd_link_info *info;
1794{
1795 asection *s;
297a4f1a
ILT		 1796
1797 if (bfd_get_section_by_name (abfd, ".got"))
1798 return true;
1799
ff12f303 1800 s = bfd_make_section (abfd, ".got");
297a4f1a
ILT		 1801 if (s == NULL
1802 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
ff12f303
ILT		 1803 | SEC_HAS_CONTENTS
1804 | SEC_IN_MEMORY
1805 | SEC_LINKER_CREATED))
297a4f1a
ILT		 1806 || !bfd_set_section_alignment (abfd, s, 3))
1807 return false;
1808
ff12f303 1809 alpha_elf_tdata (abfd)->got = s;
297a4f1a
ILT		 1810
1811 return true;
1812}
1813
ff12f303
ILT		 1814/* Create all the dynamic sections. */
1815
297a4f1a
ILT		 1816static boolean
1817elf64_alpha_create_dynamic_sections (abfd, info)
1818 bfd *abfd;
1819 struct bfd_link_info *info;
1820{
ff12f303 1821 asection *s;
297a4f1a
ILT		 1822 struct elf_link_hash_entry *h;
1823
1824 /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */
1825
1826 s = bfd_make_section (abfd, ".plt");
1827 if (s == NULL
1828 || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
ff12f303
ILT		 1829 | SEC_HAS_CONTENTS
1830 | SEC_IN_MEMORY
1831 | SEC_LINKER_CREATED
297a4f1a
ILT		 1832 | SEC_CODE))
1833 || ! bfd_set_section_alignment (abfd, s, 3))
1834 return false;
1835
1836 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1837 .plt section. */
1838 h = NULL;
1839 if (! (_bfd_generic_link_add_one_symbol
1840 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1841 (bfd_vma) 0, (const char *) NULL, false,
1842 get_elf_backend_data (abfd)->collect,
1843 (struct bfd_link_hash_entry **) &h)))
1844 return false;
1845 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
1846 h->type = STT_OBJECT;
1847
1848 if (info->shared
1849 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
1850 return false;
1851
1852 s = bfd_make_section (abfd, ".rela.plt");
1853 if (s == NULL
1854 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
ff12f303
ILT		 1855 | SEC_HAS_CONTENTS
1856 | SEC_IN_MEMORY
1857 | SEC_LINKER_CREATED
1858 | SEC_READONLY))
297a4f1a
ILT		 1859 || ! bfd_set_section_alignment (abfd, s, 3))
1860 return false;
1861
ff12f303
ILT		 1862 /* We may or may not have created a .got section for this object, but
1863 we definitely havn't done the rest of the work. */
1864
297a4f1a
ILT		 1865 if (!elf64_alpha_create_got_section (abfd, info))
1866 return false;
1867
ff12f303
ILT		 1868 s = bfd_make_section(abfd, ".rela.got");
1869 if (s == NULL
1870 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
1871 | SEC_HAS_CONTENTS
1872 | SEC_IN_MEMORY
1873 | SEC_LINKER_CREATED
1874 | SEC_READONLY))
1875 || !bfd_set_section_alignment (abfd, s, 3))
1876 return false;
297a4f1a 1877
ff12f303
ILT		 1878 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
1879 dynobj's .got section. We don't do this in the linker script
1880 because we don't want to define the symbol if we are not creating
1881 a global offset table. */
1882 h = NULL;
1883 if (!(_bfd_generic_link_add_one_symbol
1884 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL,
1885 alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL,
1886 false, get_elf_backend_data (abfd)->collect,
1887 (struct bfd_link_hash_entry **) &h)))
1888 return false;
1889 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
1890 h->type = STT_OBJECT;
297a4f1a 1891
ff12f303
ILT		 1892 if (info->shared
1893 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
1894 return false;
1895
1896 elf_hash_table (info)->hgot = h;
1897
1898 return true;
1899}
297a4f1a
ILT		 1900\f
1901/* Read ECOFF debugging information from a .mdebug section into a
1902 ecoff_debug_info structure. */
1903
1904static boolean
1905elf64_alpha_read_ecoff_info (abfd, section, debug)
1906 bfd *abfd;
1907 asection *section;
1908 struct ecoff_debug_info *debug;
1909{
1910 HDRR *symhdr;
1911 const struct ecoff_debug_swap *swap;
1912 char *ext_hdr = NULL;
1913
1914 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
1915
1916 ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size);
1917 if (ext_hdr == NULL && swap->external_hdr_size != 0)
1918 goto error_return;
1919
1920 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
1921 swap->external_hdr_size)
1922 == false)
1923 goto error_return;
1924
1925 symhdr = &debug->symbolic_header;
1926 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
1927
1928 /* The symbolic header contains absolute file offsets and sizes to
1929 read. */
1930#define READ(ptr, offset, count, size, type) \
1931 if (symhdr->count == 0) \
1932 debug->ptr = NULL; \
1933 else \
1934 { \
1935 debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \
1936 if (debug->ptr == NULL) \
1937 goto error_return; \
1938 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
1939 || (bfd_read (debug->ptr, size, symhdr->count, \
1940 abfd) != size * symhdr->count)) \
1941 goto error_return; \
1942 }
1943
1944 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
1945 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
1946 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
1947 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
1948 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
1949 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
1950 union aux_ext *);
1951 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
1952 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
1953 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
1954 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
1955 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
1956#undef READ
1957
1958 debug->fdr = NULL;
1959 debug->adjust = NULL;
1960
1961 return true;
1962
1963 error_return:
1964 if (ext_hdr != NULL)
1965 free (ext_hdr);
1966 if (debug->line != NULL)
1967 free (debug->line);
1968 if (debug->external_dnr != NULL)
1969 free (debug->external_dnr);
1970 if (debug->external_pdr != NULL)
1971 free (debug->external_pdr);
1972 if (debug->external_sym != NULL)
1973 free (debug->external_sym);
1974 if (debug->external_opt != NULL)
1975 free (debug->external_opt);
1976 if (debug->external_aux != NULL)
1977 free (debug->external_aux);
1978 if (debug->ss != NULL)
1979 free (debug->ss);
1980 if (debug->ssext != NULL)
1981 free (debug->ssext);
1982 if (debug->external_fdr != NULL)
1983 free (debug->external_fdr);
1984 if (debug->external_rfd != NULL)
1985 free (debug->external_rfd);
1986 if (debug->external_ext != NULL)
1987 free (debug->external_ext);
1988 return false;
1989}
1990
1991/* Alpha ELF local labels start with '$'. */
1992
1993static boolean
303e7257 1994elf64_alpha_is_local_label_name (abfd, name)
297a4f1a 1995 bfd *abfd;
303e7257 1996 const char *name;
297a4f1a 1997{
303e7257 1998 return name[0] == '$';
297a4f1a
ILT		 1999}
2000
2001/* Alpha ELF follows MIPS ELF in using a special find_nearest_line
2002 routine in order to handle the ECOFF debugging information. We
2003 still call this mips_elf_find_line because of the slot
2004 find_line_info in elf_obj_tdata is declared that way. */
2005
2006struct mips_elf_find_line
2007{
2008 struct ecoff_debug_info d;
2009 struct ecoff_find_line i;
2010};
2011
2012static boolean
2013elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
2014 functionname_ptr, line_ptr)
2015 bfd *abfd;
2016 asection *section;
2017 asymbol **symbols;
2018 bfd_vma offset;
2019 const char **filename_ptr;
2020 const char **functionname_ptr;
2021 unsigned int *line_ptr;
2022{
2023 asection *msec;
2024
2025 msec = bfd_get_section_by_name (abfd, ".mdebug");
2026 if (msec != NULL)
2027 {
2028 flagword origflags;
2029 struct mips_elf_find_line *fi;
2030 const struct ecoff_debug_swap * const swap =
2031 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
2032
2033 /* If we are called during a link, alpha_elf_final_link may have
2034 cleared the SEC_HAS_CONTENTS field. We force it back on here
2035 if appropriate (which it normally will be). */
2036 origflags = msec->flags;
2037 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
2038 msec->flags |= SEC_HAS_CONTENTS;
2039
2040 fi = elf_tdata (abfd)->find_line_info;
2041 if (fi == NULL)
2042 {
2043 bfd_size_type external_fdr_size;
2044 char *fraw_src;
2045 char *fraw_end;
2046 struct fdr *fdr_ptr;
2047
2048 fi = ((struct mips_elf_find_line *)
2049 bfd_zalloc (abfd, sizeof (struct mips_elf_find_line)));
2050 if (fi == NULL)
2051 {
2052 msec->flags = origflags;
2053 return false;
2054 }
2055
2056 if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d))
2057 {
2058 msec->flags = origflags;
2059 return false;
2060 }
2061
2062 /* Swap in the FDR information. */
2063 fi->d.fdr = ((struct fdr *)
2064 bfd_alloc (abfd,
2065 (fi->d.symbolic_header.ifdMax *
2066 sizeof (struct fdr))));
2067 if (fi->d.fdr == NULL)
2068 {
2069 msec->flags = origflags;
2070 return false;
2071 }
2072 external_fdr_size = swap->external_fdr_size;
2073 fdr_ptr = fi->d.fdr;
2074 fraw_src = (char *) fi->d.external_fdr;
2075 fraw_end = (fraw_src
2076 + fi->d.symbolic_header.ifdMax * external_fdr_size);
2077 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
2078 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
2079
2080 elf_tdata (abfd)->find_line_info = fi;
2081
2082 /* Note that we don't bother to ever free this information.
2083 find_nearest_line is either called all the time, as in
2084 objdump -l, so the information should be saved, or it is
2085 rarely called, as in ld error messages, so the memory
2086 wasted is unimportant. Still, it would probably be a
2087 good idea for free_cached_info to throw it away. */
2088 }
2089
2090 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
2091 &fi->i, filename_ptr, functionname_ptr,
2092 line_ptr))
2093 {
2094 msec->flags = origflags;
2095 return true;
2096 }
2097
2098 msec->flags = origflags;
2099 }
2100
2101 /* Fall back on the generic ELF find_nearest_line routine. */
2102
2103 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
2104 filename_ptr, functionname_ptr,
2105 line_ptr);
2106}
2107\f
2108/* Structure used to pass information to alpha_elf_output_extsym. */
2109
2110struct extsym_info
2111{
2112 bfd *abfd;
2113 struct bfd_link_info *info;
2114 struct ecoff_debug_info *debug;
2115 const struct ecoff_debug_swap *swap;
2116 boolean failed;
2117};
2118
2119static boolean
2120elf64_alpha_output_extsym (h, data)
2121 struct alpha_elf_link_hash_entry *h;
2122 PTR data;
2123{
2124 struct extsym_info *einfo = (struct extsym_info *) data;
2125 boolean strip;
2126 asection *sec, *output_section;
2127
2128 if (h->root.indx == -2)
2129 strip = false;
2130 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2131 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
2132 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
2133 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
2134 strip = true;
2135 else if (einfo->info->strip == strip_all
2136 || (einfo->info->strip == strip_some
2137 && bfd_hash_lookup (einfo->info->keep_hash,
2138 h->root.root.root.string,
2139 false, false) == NULL))
2140 strip = true;
2141 else
2142 strip = false;
2143
2144 if (strip)
2145 return true;
2146
2147 if (h->esym.ifd == -2)
2148 {
2149 h->esym.jmptbl = 0;
2150 h->esym.cobol_main = 0;
2151 h->esym.weakext = 0;
2152 h->esym.reserved = 0;
2153 h->esym.ifd = ifdNil;
2154 h->esym.asym.value = 0;
2155 h->esym.asym.st = stGlobal;
2156
2157 if (h->root.root.type != bfd_link_hash_defined
2158 && h->root.root.type != bfd_link_hash_defweak)
2159 h->esym.asym.sc = scAbs;
2160 else
2161 {
2162 const char *name;
2163
2164 sec = h->root.root.u.def.section;
2165 output_section = sec->output_section;
2166
2167 /* When making a shared library and symbol h is the one from
2168 the another shared library, OUTPUT_SECTION may be null. */
2169 if (output_section == NULL)
2170 h->esym.asym.sc = scUndefined;
2171 else
2172 {
2173 name = bfd_section_name (output_section->owner, output_section);
ff12f303 2174
297a4f1a
ILT		 2175 if (strcmp (name, ".text") == 0)
2176 h->esym.asym.sc = scText;
2177 else if (strcmp (name, ".data") == 0)
2178 h->esym.asym.sc = scData;
2179 else if (strcmp (name, ".sdata") == 0)
2180 h->esym.asym.sc = scSData;
2181 else if (strcmp (name, ".rodata") == 0
2182 || strcmp (name, ".rdata") == 0)
2183 h->esym.asym.sc = scRData;
2184 else if (strcmp (name, ".bss") == 0)
2185 h->esym.asym.sc = scBss;
2186 else if (strcmp (name, ".sbss") == 0)
2187 h->esym.asym.sc = scSBss;
2188 else if (strcmp (name, ".init") == 0)
2189 h->esym.asym.sc = scInit;
2190 else if (strcmp (name, ".fini") == 0)
2191 h->esym.asym.sc = scFini;
2192 else
2193 h->esym.asym.sc = scAbs;
2194 }
2195 }
2196
2197 h->esym.asym.reserved = 0;
2198 h->esym.asym.index = indexNil;
2199 }
2200
2201 if (h->root.root.type == bfd_link_hash_common)
2202 h->esym.asym.value = h->root.root.u.c.size;
2203 else if (h->root.root.type == bfd_link_hash_defined
2204 || h->root.root.type == bfd_link_hash_defweak)
2205 {
2206 if (h->esym.asym.sc == scCommon)
2207 h->esym.asym.sc = scBss;
2208 else if (h->esym.asym.sc == scSCommon)
2209 h->esym.asym.sc = scSBss;
2210
2211 sec = h->root.root.u.def.section;
2212 output_section = sec->output_section;
2213 if (output_section != NULL)
2214 h->esym.asym.value = (h->root.root.u.def.value
2215 + sec->output_offset
2216 + output_section->vma);
2217 else
2218 h->esym.asym.value = 0;
2219 }
2220 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2221 {
2222 /* Set type and value for a symbol with a function stub. */
2223 h->esym.asym.st = stProc;
ff12f303 2224 sec = bfd_get_section_by_name (einfo->abfd, ".plt");
297a4f1a 2225 if (sec == NULL)
ff12f303 2226 h->esym.asym.value = 0;
297a4f1a 2227 else
ff12f303
ILT		 2228 {
2229 output_section = sec->output_section;
2230 if (output_section != NULL)
2231 h->esym.asym.value = (h->root.plt_offset
2232 + sec->output_offset
2233 + output_section->vma);
2234 else
2235 h->esym.asym.value = 0;
2236 }
297a4f1a
ILT		 2237#if 0 /* FIXME? */
2238 h->esym.ifd = 0;
2239#endif
ff12f303 2240 }
297a4f1a
ILT		 2241
2242 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
2243 h->root.root.root.string,
2244 &h->esym))
2245 {
2246 einfo->failed = true;
2247 return false;
2248 }
2249
2250 return true;
2251}
2252
2253/* FIXME: Create a runtime procedure table from the .mdebug section.
2254
2255static boolean
2256mips_elf_create_procedure_table (handle, abfd, info, s, debug)
2257 PTR handle;
2258 bfd *abfd;
2259 struct bfd_link_info *info;
2260 asection *s;
2261 struct ecoff_debug_info *debug;
ff12f303 2262*/
297a4f1a 2263\f
ff12f303
ILT		 2264/* Handle dynamic relocations when doing an Alpha ELF link. */
2265
297a4f1a
ILT		 2266static boolean
2267elf64_alpha_check_relocs (abfd, info, sec, relocs)
2268 bfd *abfd;
2269 struct bfd_link_info *info;
2270 asection *sec;
2271 const Elf_Internal_Rela *relocs;
2272{
2273 bfd *dynobj;
297a4f1a 2274 asection *sreloc;
ff12f303 2275 const char *rel_sec_name;
297a4f1a 2276 Elf_Internal_Shdr *symtab_hdr;
ff12f303
ILT		 2277 struct alpha_elf_link_hash_entry **sym_hashes;
2278 struct alpha_elf_got_entry **local_got_entries;
297a4f1a 2279 const Elf_Internal_Rela *rel, *relend;
ff12f303 2280 int got_created;
297a4f1a
ILT		 2281
2282 if (info->relocateable)
2283 return true;
2284
297a4f1a 2285 dynobj = elf_hash_table(info)->dynobj;
ff12f303
ILT		 2286 if (dynobj == NULL)
2287 elf_hash_table(info)->dynobj = dynobj = abfd;
2288
2289 sreloc = NULL;
2290 rel_sec_name = NULL;
2291 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
2292 sym_hashes = alpha_elf_sym_hashes(abfd);
2293 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
2294 got_created = 0;
297a4f1a
ILT		 2295
2296 relend = relocs + sec->reloc_count;
2297 for (rel = relocs; rel < relend; ++rel)
2298 {
ff12f303 2299 unsigned long r_symndx, r_type;
37d7888d 2300 struct alpha_elf_link_hash_entry *h;
297a4f1a 2301
37d7888d 2302 r_symndx = ELF64_R_SYM (rel->r_info);
297a4f1a
ILT		 2303 if (r_symndx < symtab_hdr->sh_info)
2304 h = NULL;
2305 else
ff12f303
ILT		 2306 {
2307 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
69842d08
RH		 2308
2309 while (h->root.root.type == bfd_link_hash_indirect
2310 || h->root.root.type == bfd_link_hash_warning)
2311 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2312
ff12f303
ILT		 2313 h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
2314 }
2315 r_type = ELF64_R_TYPE (rel->r_info);
297a4f1a 2316
ff12f303 2317 switch (r_type)
297a4f1a
ILT		 2318 {
2319 case R_ALPHA_LITERAL:
ff12f303
ILT		 2320 {
2321 struct alpha_elf_got_entry *gotent;
2322 int flags = 0;
297a4f1a 2323
ff12f303
ILT		 2324 if (h)
2325 {
2326 /* Search for and possibly create a got entry. */
2327 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
2328 if (gotent->gotobj == abfd &&
2329 gotent->addend == rel->r_addend)
2330 break;
2331
2332 if (!gotent)
2333 {
2334 gotent = ((struct alpha_elf_got_entry *)
2335 bfd_alloc (abfd,
2336 sizeof (struct alpha_elf_got_entry)));
2337 if (!gotent)
2338 return false;
297a4f1a 2339
ff12f303
ILT		 2340 gotent->gotobj = abfd;
2341 gotent->addend = rel->r_addend;
2342 gotent->got_offset = -1;
2343 gotent->flags = 0;
69842d08 2344 gotent->use_count = 1;
297a4f1a 2345
ff12f303
ILT		 2346 gotent->next = h->got_entries;
2347 h->got_entries = gotent;
37d7888d 2348
ff12f303
ILT		 2349 alpha_elf_tdata (abfd)->total_got_entries++;
2350 }
69842d08
RH		 2351 else
2352 gotent->use_count += 1;
ff12f303
ILT		 2353 }
2354 else
2355 {
2356 /* This is a local .got entry -- record for merge. */
2357 if (!local_got_entries)
2358 {
2359 size_t size;
2360 size = (symtab_hdr->sh_info
2361 * sizeof (struct alpha_elf_got_entry *));
2362
2363 local_got_entries = ((struct alpha_elf_got_entry **)
2364 bfd_alloc (abfd, size));
2365 if (!local_got_entries)
2366 return false;
2367
2368 memset (local_got_entries, 0, size);
2369 alpha_elf_tdata (abfd)->local_got_entries =
2370 local_got_entries;
2371 }
2372
2373 for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)];
2374 gotent != NULL && gotent->addend != rel->r_addend;
2375 gotent = gotent->next)
2376 continue;
2377 if (!gotent)
2378 {
2379 gotent = ((struct alpha_elf_got_entry *)
2380 bfd_alloc (abfd,
2381 sizeof (struct alpha_elf_got_entry)));
2382 if (!gotent)
2383 return false;
2384
2385 gotent->gotobj = abfd;
2386 gotent->addend = rel->r_addend;
2387 gotent->got_offset = -1;
2388 gotent->flags = 0;
69842d08 2389 gotent->use_count = 1;
ff12f303
ILT		 2390
2391 gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)];
2392 local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent;
2393
2394 alpha_elf_tdata(abfd)->total_got_entries++;
2395 alpha_elf_tdata(abfd)->n_local_got_entries++;
2396 }
69842d08
RH		 2397 else
2398 gotent->use_count += 1;
ff12f303
ILT		 2399 }
2400
2401 /* Remember how this literal is used from its LITUSEs.
2402 This will be important when it comes to decide if we can
2403 create a .plt entry for a function symbol. */
2404 if (rel+1 < relend
2405 && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE)
2406 {
2407 do
2408 {
2409 ++rel;
2410 if (rel->r_addend >= 1 && rel->r_addend <= 3)
2411 flags |= 1 << rel->r_addend;
2412 }
2413 while (rel+1 < relend &&
2414 ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE);
2415 }
2416 else
2417 {
2418 /* No LITUSEs -- presumably the address is not being
2419 loaded for nothing. */
2420 flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
2421 }
2422
2423 gotent->flags |= flags;
2424 if (h)
2425 {
2426 /* Make a guess as to whether a .plt entry will be needed. */
2427 if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC)
2428 h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2429 else
2430 h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2431 }
2432 }
2433 /* FALLTHRU */
2434
2435 case R_ALPHA_GPDISP:
2436 case R_ALPHA_GPREL32:
69842d08
RH		 2437 case R_ALPHA_GPRELHIGH:
2438 case R_ALPHA_GPRELLOW:
ff12f303
ILT		 2439 /* We don't actually use the .got here, but the sections must
2440 be created before the linker maps input sections to output
2441 sections. */
2442 if (!got_created)
297a4f1a 2443 {
ff12f303
ILT		 2444 if (!elf64_alpha_create_got_section (abfd, info))
2445 return false;
2446
2447 /* Make sure the object's gotobj is set to itself so
2448 that we default to every object with its own .got.
2449 We'll merge .gots later once we've collected each
2450 object's info. */
2451 alpha_elf_tdata(abfd)->gotobj = abfd;
2452
2453 got_created = 1;
2454 }
2455 break;
2456
2457 case R_ALPHA_SREL16:
2458 case R_ALPHA_SREL32:
2459 case R_ALPHA_SREL64:
2460 if (h == NULL)
2461 break;
2462 /* FALLTHRU */
2463
2464 case R_ALPHA_REFLONG:
2465 case R_ALPHA_REFQUAD:
2466 if (rel_sec_name == NULL)
2467 {
2468 rel_sec_name = (bfd_elf_string_from_elf_section
2469 (abfd, elf_elfheader(abfd)->e_shstrndx,
2470 elf_section_data(sec)->rel_hdr.sh_name));
2471 if (rel_sec_name == NULL)
2472 return false;
2473
2474 BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0
2475 && strcmp (bfd_get_section_name (abfd, sec),
2476 rel_sec_name+5) == 0);
2477 }
2478
2479 /* We need to create the section here now whether we eventually
2480 use it or not so that it gets mapped to an output section by
2481 the linker. If not used, we'll kill it in
2482 size_dynamic_sections. */
2483 if (sreloc == NULL)
2484 {
2485 sreloc = bfd_get_section_by_name (dynobj, rel_sec_name);
2486 if (sreloc == NULL)
37d7888d 2487 {
ff12f303
ILT		 2488 sreloc = bfd_make_section (dynobj, rel_sec_name);
2489 if (sreloc == NULL
2490 || !bfd_set_section_flags (dynobj, sreloc,
2491 (SEC_ALLOC|SEC_LOAD
2492 | SEC_HAS_CONTENTS
2493 | SEC_IN_MEMORY
2494 | SEC_LINKER_CREATED
2495 | SEC_READONLY))
2496 || !bfd_set_section_alignment (dynobj, sreloc, 3))
2497 return false;
37d7888d 2498 }
297a4f1a
ILT		 2499 }
2500
ff12f303 2501 if (h)
297a4f1a 2502 {
ff12f303
ILT		 2503 /* Since we havn't seen all of the input symbols yet, we
2504 don't know whether we'll actually need a dynamic relocation
2505 entry for this reloc. So make a record of it. Once we
2506 find out if this thing needs dynamic relocation we'll
2507 expand the relocation sections by the appropriate amount. */
297a4f1a 2508
ff12f303
ILT		 2509 struct alpha_elf_reloc_entry *rent;
2510
2511 for (rent = h->reloc_entries; rent; rent = rent->next)
2512 if (rent->rtype == r_type && rent->srel == sreloc)
2513 break;
2514
2515 if (!rent)
2516 {
2517 rent = ((struct alpha_elf_reloc_entry *)
2518 bfd_alloc (abfd,
2519 sizeof (struct alpha_elf_reloc_entry)));
2520 if (!rent)
2521 return false;
2522
2523 rent->srel = sreloc;
2524 rent->rtype = r_type;
2525 rent->count = 1;
297a4f1a 2526
ff12f303
ILT		 2527 rent->next = h->reloc_entries;
2528 h->reloc_entries = rent;
2529 }
2530 else
2531 rent->count++;
297a4f1a 2532 }
ff12f303
ILT		 2533 else if (info->shared)
2534 {
2535 /* If this is a shared library, we need a RELATIVE reloc. */
2536 sreloc->_raw_size += sizeof (Elf64_External_Rela);
2537 }
2538 break;
2539 }
2540 }
2541
2542 return true;
2543}
2544
2545/* Adjust a symbol defined by a dynamic object and referenced by a
2546 regular object. The current definition is in some section of the
2547 dynamic object, but we're not including those sections. We have to
2548 change the definition to something the rest of the link can
2549 understand. */
2550
2551static boolean
2552elf64_alpha_adjust_dynamic_symbol (info, h)
2553 struct bfd_link_info *info;
2554 struct elf_link_hash_entry *h;
2555{
2556 bfd *dynobj;
2557 asection *s;
2558 struct alpha_elf_link_hash_entry *ah;
2559
2560 dynobj = elf_hash_table(info)->dynobj;
2561 ah = (struct alpha_elf_link_hash_entry *)h;
2562
2563 /* Now that we've seen all of the input symbols, finalize our decision
2564 about whether this symbol should get a .plt entry. */
2565
2566 if (h->root.type != bfd_link_hash_undefweak
2567 && alpha_elf_dynamic_symbol_p (h, info)
3a13dd8f
RH		 2568 && ((h->type == STT_FUNC
2569 && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR))
ff12f303
ILT		 2570 || (h->type == STT_NOTYPE
2571 && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC))
2572 /* Don't prevent otherwise valid programs from linking by attempting
2573 to create a new .got entry somewhere. A Correct Solution would be
2574 to add a new .got section to a new object file and let it be merged
2575 somewhere later. But for now don't bother. */
2576 && ah->got_entries)
2577 {
2578 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2579
2580 s = bfd_get_section_by_name(dynobj, ".plt");
2581 if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
2582 return false;
2583
2584 /* The first bit of the .plt is reserved. */
2585 if (s->_raw_size == 0)
2586 s->_raw_size = PLT_HEADER_SIZE;
2587
2588 h->plt_offset = s->_raw_size;
2589 s->_raw_size += PLT_ENTRY_SIZE;
2590
2591 /* If this symbol is not defined in a regular file, and we are not
2592 generating a shared library, then set the symbol to the location
2593 in the .plt. This is required to make function pointers compare
2594 equal between the normal executable and the shared library. */
2595 if (!info->shared)
2596 {
2597 h->root.u.def.section = s;
2598 h->root.u.def.value = h->plt_offset;
2599 }
2600
2601 /* We also need a JMP_SLOT entry in the .rela.plt section. */
2602 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2603 BFD_ASSERT (s != NULL);
2604 s->_raw_size += sizeof (Elf64_External_Rela);
2605
2606 return true;
2607 }
2608 else
2609 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2610
2611 /* If this is a weak symbol, and there is a real definition, the
2612 processor independent code will have arranged for us to see the
2613 real definition first, and we can just use the same value. */
2614 if (h->weakdef != NULL)
2615 {
2616 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2617 || h->weakdef->root.type == bfd_link_hash_defweak);
2618 h->root.u.def.section = h->weakdef->root.u.def.section;
2619 h->root.u.def.value = h->weakdef->root.u.def.value;
2620 return true;
2621 }
2622
2623 /* This is a reference to a symbol defined by a dynamic object which
2624 is not a function. The Alpha, since it uses .got entries for all
2625 symbols even in regular objects, does not need the hackery of a
2626 .dynbss section and COPY dynamic relocations. */
2627
2628 return true;
2629}
2630
69842d08
RH		 2631/* Symbol versioning can create new symbols, and make our old symbols
2632 indirect to the new ones. Consolidate the got and reloc information
2633 in these situations. */
2634
2635static boolean
2636elf64_alpha_merge_ind_symbols (hi, dummy)
2637 struct alpha_elf_link_hash_entry *hi;
2638 PTR dummy;
2639{
2640 struct alpha_elf_link_hash_entry *hs;
2641
2642 if (hi->root.root.type != bfd_link_hash_indirect)
2643 return true;
2644 hs = hi;
2645 do {
2646 hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link;
2647 } while (hs->root.root.type == bfd_link_hash_indirect);
2648
2649 /* Merge the flags. Whee. */
2650
2651 hs->flags |= hi->flags;
2652
2653 /* Merge the .got entries. Cannibalize the old symbol's list in
2654 doing so, since we don't need it anymore. */
2655
2656 if (hs->got_entries == NULL)
2657 hs->got_entries = hi->got_entries;
2658 else
2659 {
2660 struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
2661
2662 gsh = hs->got_entries;
2663 for (gi = hi->got_entries; gi ; gi = gin)
2664 {
2665 gin = gi->next;
2666 for (gs = gsh; gs ; gs = gs->next)
2667 if (gi->gotobj == gs->gotobj && gi->addend == gs->addend)
2668 goto got_found;
2669 gi->next = hs->got_entries;
2670 hs->got_entries = gi;
2671 got_found:;
2672 }
2673 }
2674 hi->got_entries = NULL;
2675
2676 /* And similar for the reloc entries. */
2677
2678 if (hs->reloc_entries == NULL)
2679 hs->reloc_entries = hi->reloc_entries;
2680 else
2681 {
2682 struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
2683
2684 rsh = hs->reloc_entries;
2685 for (ri = hi->reloc_entries; ri ; ri = rin)
2686 {
2687 rin = ri->next;
2688 for (rs = rsh; rs ; rs = rs->next)
2689 if (ri->rtype == rs->rtype)
2690 {
2691 rs->count += ri->count;
2692 goto found_reloc;
2693 }
2694 ri->next = hs->reloc_entries;
2695 hs->reloc_entries = ri;
2696 found_reloc:;
2697 }
2698 }
2699 hi->reloc_entries = NULL;
2700
2701 return true;
2702}
2703
ff12f303
ILT		 2704/* Is it possible to merge two object file's .got tables? */
2705
2706static boolean
2707elf64_alpha_can_merge_gots (a, b)
2708 bfd *a, *b;
2709{
2710 int total = alpha_elf_tdata (a)->total_got_entries;
2711
2712 /* Trivial quick fallout test. */
2713 if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES)
2714 return true;
2715
2716 /* By their nature, local .got entries cannot be merged. */
2717 if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES)
2718 return false;
2719
2720 /* Failing the common trivial comparison, we must effectively
2721 perform the merge. Not actually performing the merge means that
2722 we don't have to store undo information in case we fail. */
2723 {
2724 struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes(b);
2725 Elf_Internal_Shdr *symtab_hdr = &elf_tdata(b)->symtab_hdr;
2726 int i, n;
2727
2728 n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info;
2729 for (i = 0; i < n; ++i)
2730 {
2731 struct alpha_elf_got_entry *ae, *be;
69842d08
RH		 2732 struct alpha_elf_link_hash_entry *h;
2733
2734 h = hashes[i];
2735 while (h->root.root.type == bfd_link_hash_indirect
2736 || h->root.root.type == bfd_link_hash_warning)
2737 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2738
2739 for (be = h->got_entries; be ; be = be->next)
ff12f303 2740 {
69842d08
RH		 2741 if (be->use_count == 0)
2742 continue;
ff12f303
ILT		 2743 if (be->gotobj != b)
2744 continue;
2745
69842d08 2746 for (ae = h->got_entries; ae ; ae = ae->next)
ff12f303
ILT		 2747 if (ae->gotobj == a && ae->addend == be->addend)
2748 goto global_found;
2749
2750 if (++total > MAX_GOT_ENTRIES)
2751 return false;
2752 global_found:;
2753 }
2754 }
2755 }
2756
2757 return true;
2758}
2759
2760/* Actually merge two .got tables. */
2761
2762static void
2763elf64_alpha_merge_gots (a, b)
2764 bfd *a, *b;
2765{
2766 int total = alpha_elf_tdata(a)->total_got_entries;
2767
2768 /* Remember local expansion. */
2769 {
2770 int e = alpha_elf_tdata(b)->n_local_got_entries;
2771 total += e;
2772 alpha_elf_tdata(a)->n_local_got_entries += e;
2773 }
2774
2775 /* Let the local .got entries know they are part of a new subsegment. */
2776 {
2777 struct alpha_elf_got_entry **local_got_entries;
2778 local_got_entries = alpha_elf_tdata(b)->local_got_entries;
2779 if (local_got_entries)
2780 {
2781 int i, n;
2782
2783 n = elf_tdata(b)->symtab_hdr.sh_info;
2784 for (i = 0; i < n; ++i)
2785 {
2786 struct alpha_elf_got_entry *gotent;
2787 for (gotent = local_got_entries[i]; gotent; gotent = gotent->next)
2788 gotent->gotobj = a;
2789 }
2790 }
2791 }
2792
2793 /* Merge the global .got entries. */
2794 {
2795 struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes(b);
2796 Elf_Internal_Shdr *symtab_hdr = &elf_tdata(b)->symtab_hdr;
2797 int i, n;
2798
2799 n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info;
2800 for (i = 0; i < n; ++i)
2801 {
2802 struct alpha_elf_got_entry *ae, *be, **pbe, **start;
69842d08
RH		 2803 struct alpha_elf_link_hash_entry *h;
2804
2805 h = hashes[i];
2806 while (h->root.root.type == bfd_link_hash_indirect
2807 || h->root.root.type == bfd_link_hash_warning)
2808 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2809
2810 start = &h->got_entries;
ff12f303
ILT		 2811 for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next)
2812 {
69842d08
RH		 2813 if (be->use_count == 0)
2814 {
2815 *pbe = be->next;
2816 continue;
2817 }
ff12f303
ILT		 2818 if (be->gotobj != b)
2819 continue;
297a4f1a 2820
ff12f303
ILT		 2821 for (ae = *start; ae ; ae = ae->next)
2822 if (ae->gotobj == a && ae->addend == be->addend)
297a4f1a 2823 {
3a13dd8f 2824 ae->flags |= be->flags;
ff12f303
ILT		 2825 *pbe = be->next;
2826 goto global_found;
297a4f1a 2827 }
ff12f303
ILT		 2828 be->gotobj = a;
2829 total += 1;
297a4f1a 2830
ff12f303
ILT		 2831 global_found:;
2832 }
2833 }
2834 }
297a4f1a 2835
ff12f303
ILT		 2836 alpha_elf_tdata(a)->total_got_entries = total;
2837 alpha_elf_tdata(b)->gotobj = a;
2838}
297a4f1a 2839
ff12f303 2840/* Calculate the offsets for the got entries. */
297a4f1a 2841
ff12f303
ILT		 2842static boolean
2843elf64_alpha_calc_got_offsets_for_symbol (h, arg)
2844 struct alpha_elf_link_hash_entry *h;
2845 PTR arg;
2846{
2847 struct alpha_elf_got_entry *gotent;
297a4f1a 2848
ff12f303 2849 for (gotent = h->got_entries; gotent; gotent = gotent->next)
69842d08
RH		 2850 if (gotent->use_count > 0)
2851 {
2852 bfd_size_type *plge
2853 = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size;
2854
2855 gotent->got_offset = *plge;
2856 *plge += 8;
2857 }
297a4f1a 2858
ff12f303
ILT		 2859 return true;
2860}
297a4f1a 2861
ff12f303
ILT		 2862static void
2863elf64_alpha_calc_got_offsets (info)
2864 struct bfd_link_info *info;
2865{
2866 bfd *i, *got_list = alpha_elf_hash_table(info)->got_list;
297a4f1a 2867
ff12f303
ILT		 2868 /* First, zero out the .got sizes, as we may be recalculating the
2869 .got after optimizing it. */
2870 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
2871 alpha_elf_tdata(i)->got->_raw_size = 0;
297a4f1a 2872
ff12f303
ILT		 2873 /* Next, fill in the offsets for all the global entries. */
2874 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
2875 elf64_alpha_calc_got_offsets_for_symbol,
2876 NULL);
297a4f1a 2877
ff12f303
ILT		 2878 /* Finally, fill in the offsets for the local entries. */
2879 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
2880 {
2881 bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size;
2882 bfd *j;
297a4f1a 2883
ff12f303
ILT		 2884 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
2885 {
2886 struct alpha_elf_got_entry **local_got_entries, *gotent;
2887 int k, n;
297a4f1a 2888
ff12f303
ILT		 2889 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
2890 if (!local_got_entries)
2891 continue;
2892
2893 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
2894 for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
2895 {
2896 gotent->got_offset = got_offset;
2897 got_offset += 8;
2898 }
297a4f1a 2899 }
ff12f303
ILT		 2900
2901 alpha_elf_tdata(i)->got->_raw_size = got_offset;
297a4f1a 2902 }
ff12f303 2903}
297a4f1a 2904
ff12f303
ILT		 2905/* Remove a section from the output BFD. */
2906
2907static void
2908elf64_alpha_strip_section_from_output (s)
2909 asection *s;
2910{
2911 asection **spp;
2912
2913 for (spp = &s->output_section->owner->sections;
2914 *spp != s->output_section;
2915 spp = &(*spp)->next)
2916 continue;
2917 *spp = s->output_section->next;
2918 --s->output_section->owner->section_count;
297a4f1a
ILT		 2919}
2920
ff12f303 2921/* Constructs the gots. */
297a4f1a
ILT		 2922
2923static boolean
69842d08 2924elf64_alpha_size_got_sections (output_bfd, info)
ff12f303 2925 bfd *output_bfd;
297a4f1a 2926 struct bfd_link_info *info;
297a4f1a 2927{
ff12f303
ILT		 2928 bfd *i, *got_list, *cur_got_obj, **cur_got_tail;
2929 int ngots;
297a4f1a 2930
ff12f303
ILT		 2931 ngots = 0;
2932 got_list = NULL;
2933 cur_got_obj = NULL;
2934 cur_got_tail = NULL;
2935 for (i = info->input_bfds; i ; i = i->link_next)
297a4f1a 2936 {
ff12f303
ILT		 2937 bfd *this_got = alpha_elf_tdata (i)->gotobj;
2938
2939 /* Don't play if there is no .got for this input file. */
2940 if (this_got == NULL)
2941 continue;
2942
2943 if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES)
297a4f1a 2944 {
ff12f303
ILT		 2945 /* Yikes! A single object file has too many entries. */
2946 (*_bfd_error_handler)
2947 ("%s: .got subsegment exceeds 64K (size %d)",
2948 bfd_get_filename(i),
2949 alpha_elf_tdata(this_got)->total_got_entries * 8);
2950 return false;
297a4f1a
ILT		 2951 }
2952
ff12f303
ILT		 2953 if (cur_got_obj)
2954 {
2955 if (elf64_alpha_can_merge_gots (cur_got_obj, i))
2956 {
2957 elf64_alpha_merge_gots (cur_got_obj, i);
2958 *cur_got_tail = i;
2959 }
2960 else
2961 {
2962 if (++ngots == 2)
2963 {
2964 (*info->callbacks->warning)
2965 (info, "using multiple gp values", (char *) NULL,
2966 output_bfd, (asection *) NULL, (bfd_vma) 0);
2967 }
2968 *cur_got_tail = NULL;
2969 alpha_elf_tdata(cur_got_obj)->got_link_next = got_list;
2970 got_list = cur_got_obj;
2971 cur_got_obj = i;
2972 }
2973 }
2974 else
2975 {
2976 ++ngots;
2977 cur_got_obj = i;
2978 }
2979 cur_got_tail = &alpha_elf_tdata(i)->in_got_link_next;
2980 }
297a4f1a 2981
ff12f303
ILT		 2982 if (cur_got_obj)
2983 alpha_elf_tdata (cur_got_obj)->got_link_next = got_list;
69842d08 2984 alpha_elf_hash_table (info)->got_list = cur_got_obj;
297a4f1a 2985
ff12f303
ILT		 2986 /* Once the gots have been merged, fill in the got offsets for everything
2987 therein. */
2988 elf64_alpha_calc_got_offsets (info);
297a4f1a 2989
69842d08
RH		 2990 return true;
2991}
2992
2993static boolean
2994elf64_alpha_always_size_sections (output_bfd, info)
2995 bfd *output_bfd;
2996 struct bfd_link_info *info;
2997{
2998 bfd *i;
2999
3000 if (info->relocateable)
3001 return true;
3002
3003 /* First, take care of the indirect symbols created by versioning. */
3004 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3005 elf64_alpha_merge_ind_symbols,
3006 NULL);
3007
3008 if (!elf64_alpha_size_got_sections (output_bfd, info))
3009 return false;
3010
ff12f303 3011 /* Allocate space for all of the .got subsections. */
69842d08
RH		 3012 i = alpha_elf_hash_table (info)->got_list;
3013 for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
ff12f303
ILT		 3014 {
3015 asection *s = alpha_elf_tdata(i)->got;
3016 if (s->_raw_size > 0)
297a4f1a 3017 {
ff12f303
ILT		 3018 s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size);
3019 if (s->contents == NULL)
3020 return false;
297a4f1a 3021 }
ff12f303 3022 }
297a4f1a 3023
ff12f303
ILT		 3024 return true;
3025}
297a4f1a 3026
ff12f303 3027/* Work out the sizes of the dynamic relocation entries. */
297a4f1a 3028
ff12f303
ILT		 3029static boolean
3030elf64_alpha_calc_dynrel_sizes (h, info)
3031 struct alpha_elf_link_hash_entry *h;
3032 struct bfd_link_info *info;
3033{
3034 /* If the symbol was defined as a common symbol in a regular object
3035 file, and there was no definition in any dynamic object, then the
3036 linker will have allocated space for the symbol in a common
3037 section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
3038 set. This is done for dynamic symbols in
3039 elf_adjust_dynamic_symbol but this is not done for non-dynamic
3040 symbols, somehow. */
3041 if (((h->root.elf_link_hash_flags
3042 & (ELF_LINK_HASH_DEF_REGULAR
3043 | ELF_LINK_HASH_REF_REGULAR
3044 | ELF_LINK_HASH_DEF_DYNAMIC))
3045 == ELF_LINK_HASH_REF_REGULAR)
3046 && (h->root.root.type == bfd_link_hash_defined
3047 || h->root.root.type == bfd_link_hash_defweak)
3048 && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
3049 {
3050 h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
297a4f1a
ILT		 3051 }
3052
ff12f303 3053 /* If the symbol is dynamic, we'll need all the relocations in their
6a587c4a
RH		 3054 natural form. If it has been forced local, we'll need the same
3055 number of RELATIVE relocations. */
69842d08 3056 if (alpha_elf_dynamic_symbol_p (&h->root, info)
6a587c4a 3057 || (info->shared && h->root.dynindx == -1))
297a4f1a 3058 {
ff12f303
ILT		 3059 struct alpha_elf_reloc_entry *relent;
3060
3061 for (relent = h->reloc_entries; relent; relent = relent->next)
3062 {
3063 relent->srel->_raw_size +=
3064 sizeof (Elf64_External_Rela) * relent->count;
3065 }
3066
3067 /* Only add a .rela.got entry if we're not using a .plt entry. */
3068 if (h->root.plt_offset == MINUS_ONE)
3069 {
3070 bfd *dynobj = elf_hash_table(info)->dynobj;
3071 struct alpha_elf_got_entry *gotent;
3072 bfd_size_type count = 0;
3073 asection *srel;
3074
3075 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
3076 count++;
3077 if (count > 0)
3078 {
3079 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3080 BFD_ASSERT (srel != NULL);
3081 srel->_raw_size += sizeof (Elf64_External_Rela) * count;
3082 }
3083 }
297a4f1a 3084 }
ff12f303
ILT		 3085 /* Otherwise, shared objects require RELATIVE relocs for all REFQUAD
3086 and REFLONG relocations. */
3087 else if (info->shared)
3088 {
3089 struct alpha_elf_reloc_entry *relent;
297a4f1a 3090
ff12f303
ILT		 3091 for (relent = h->reloc_entries; relent; relent = relent->next)
3092 if (relent->rtype == R_ALPHA_REFLONG
3093 || relent->rtype == R_ALPHA_REFQUAD)
3094 {
3095 relent->srel->_raw_size +=
3096 sizeof(Elf64_External_Rela) * relent->count;
3097 }
3098 }
297a4f1a
ILT		 3099
3100 return true;
3101}
3102
3103/* Set the sizes of the dynamic sections. */
3104
3105static boolean
3106elf64_alpha_size_dynamic_sections (output_bfd, info)
3107 bfd *output_bfd;
3108 struct bfd_link_info *info;
3109{
3110 bfd *dynobj;
3111 asection *s;
3112 boolean reltext;
3113 boolean relplt;
3114
3115 dynobj = elf_hash_table(info)->dynobj;
3116 BFD_ASSERT(dynobj != NULL);
3117
ff12f303 3118 if (elf_hash_table (info)->dynamic_sections_created)
297a4f1a
ILT		 3119 {
3120 /* Set the contents of the .interp section to the interpreter. */
3121 if (!info->shared)
3122 {
ff12f303
ILT		 3123 s = bfd_get_section_by_name (dynobj, ".interp");
3124 BFD_ASSERT (s != NULL);
297a4f1a 3125 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
ff12f303
ILT		 3126 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3127 }
3128
3129 /* Now that we've seen all of the input files, we can decide which
3130 symbols need dynamic relocation entries and which don't. We've
3131 collected information in check_relocs that we can now apply to
3132 size the dynamic relocation sections. */
3133 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3134 elf64_alpha_calc_dynrel_sizes,
3135 info);
3136
3137 /* When building shared libraries, each local .got entry needs a
3138 RELATIVE reloc. */
3139 if (info->shared)
3140 {
3141 bfd *i;
3142 asection *srel;
3143 bfd_size_type count;
3144
3145 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3146 BFD_ASSERT (srel != NULL);
3147
3148 for (i = alpha_elf_hash_table(info)->got_list, count = 0;
3149 i != NULL;
3150 i = alpha_elf_tdata(i)->got_link_next)
3151 count += alpha_elf_tdata(i)->n_local_got_entries;
3152
3153 srel->_raw_size += count * sizeof(Elf64_External_Rela);
297a4f1a
ILT		 3154 }
3155 }
ff12f303 3156 /* else we're not dynamic and by definition we don't need such things. */
297a4f1a
ILT		 3157
3158 /* The check_relocs and adjust_dynamic_symbol entry points have
3159 determined the sizes of the various dynamic sections. Allocate
3160 memory for them. */
3161 reltext = false;
3162 relplt = false;
3163 for (s = dynobj->sections; s != NULL; s = s->next)
3164 {
3165 const char *name;
3166 boolean strip;
3167
ff12f303 3168 if (!(s->flags & SEC_LINKER_CREATED))
297a4f1a
ILT		 3169 continue;
3170
3171 /* It's OK to base decisions on the section name, because none
3172 of the dynobj section names depend upon the input files. */
ff12f303 3173 name = bfd_get_section_name (dynobj, s);
297a4f1a
ILT		 3174
3175 /* If we don't need this section, strip it from the output file.
3176 This is to handle .rela.bss and .rela.plt. We must create it
3177 in create_dynamic_sections, because it must be created before
3178 the linker maps input sections to output sections. The
3179 linker does that before adjust_dynamic_symbol is called, and
3180 it is that function which decides whether anything needs to
3181 go into these sections. */
3182
3183 strip = false;
3184
ff12f303 3185 if (strncmp (name, ".rela", 5) == 0)
297a4f1a
ILT		 3186 {
3187 strip = (s->_raw_size == 0);
3188
3189 if (!strip)
3190 {
303e7257 3191 const char *outname;
297a4f1a
ILT		 3192 asection *target;
3193
3194 /* If this relocation section applies to a read only
3195 section, then we probably need a DT_TEXTREL entry. */
303e7257
ILT		 3196 outname = bfd_get_section_name (output_bfd,
3197 s->output_section);
3198 target = bfd_get_section_by_name (output_bfd, outname + 5);
297a4f1a 3199 if (target != NULL
3a13dd8f
RH		 3200 && (target->flags & SEC_READONLY) != 0
3201 && (target->flags & SEC_ALLOC) != 0)
297a4f1a
ILT		 3202 reltext = true;
3203
3204 if (strcmp(name, ".rela.plt") == 0)
3205 relplt = true;
3206
3207 /* We use the reloc_count field as a counter if we need
3208 to copy relocs into the output file. */
3209 s->reloc_count = 0;
3210 }
3211 }
297a4f1a
ILT		 3212 else if (strcmp (name, ".plt") != 0)
3213 {
ff12f303 3214 /* It's not one of our dynamic sections, so don't allocate space. */
297a4f1a
ILT		 3215 continue;
3216 }
3217
3218 if (strip)
ff12f303
ILT		 3219 elf64_alpha_strip_section_from_output (s);
3220 else
297a4f1a 3221 {
ff12f303
ILT		 3222 /* Allocate memory for the section contents. */
3223 s->contents = (bfd_byte *) bfd_zalloc(dynobj, s->_raw_size);
3224 if (s->contents == NULL && s->_raw_size != 0)
3225 return false;
3226 }
3227 }
297a4f1a 3228
ff12f303
ILT		 3229 /* If we are generating a shared library, we generate a section
3230 symbol for each output section. These are local symbols, which
3231 means that they must come first in the dynamic symbol table.
3232 That means we must increment the dynamic symbol index of every
3233 other dynamic symbol. */
3234 if (info->shared)
3235 {
3236 long c[2], i;
3237 asection *p;
297a4f1a 3238
ff12f303
ILT		 3239 c[0] = 0;
3240 c[1] = bfd_count_sections (output_bfd);
297a4f1a 3241
ff12f303
ILT		 3242 elf_hash_table (info)->dynsymcount += c[1];
3243 elf_link_hash_traverse (elf_hash_table(info),
3244 elf64_alpha_adjust_dynindx,
3245 (PTR) c);
3246
3247 for (i = 1, p = output_bfd->sections;
3248 p != NULL;
3249 p = p->next, i++)
3250 {
3251 elf_section_data (p)->dynindx = i;
3252 /* These symbols will have no names, so we don't need to
3253 fiddle with dynstr_index. */
3254 }
297a4f1a
ILT		 3255 }
3256
3257 if (elf_hash_table (info)->dynamic_sections_created)
3258 {
3259 /* Add some entries to the .dynamic section. We fill in the
3260 values later, in elf64_alpha_finish_dynamic_sections, but we
3261 must add the entries now so that we get the correct size for
3262 the .dynamic section. The DT_DEBUG entry is filled in by the
3263 dynamic linker and used by the debugger. */
3264 if (!info->shared)
3265 {
3266 if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
3267 return false;
3268 }
3269
3270 if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0))
3271 return false;
3272
3273 if (relplt)
3274 {
3275 if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0)
3276 || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
3277 || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0))
3278 return false;
3279 }
3280
3281 if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0)
3282 || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0)
3283 || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT,
3284 sizeof(Elf64_External_Rela)))
3285 return false;
3286
3287 if (reltext)
3288 {
3289 if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
3290 return false;
3291 }
3292 }
3293
3294 return true;
3295}
3296
3297/* Increment the index of a dynamic symbol by a given amount. Called
3298 via elf_link_hash_traverse. */
3299
3300static boolean
3301elf64_alpha_adjust_dynindx (h, cparg)
3302 struct elf_link_hash_entry *h;
3303 PTR cparg;
3304{
3305 long *cp = (long *)cparg;
3306
3307 if (h->dynindx >= cp[0])
3308 h->dynindx += cp[1];
3309
3310 return true;
3311}
3312
3313/* Relocate an Alpha ELF section. */
3314
3315static boolean
3316elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section,
3317 contents, relocs, local_syms, local_sections)
3318 bfd *output_bfd;
3319 struct bfd_link_info *info;
3320 bfd *input_bfd;
3321 asection *input_section;
3322 bfd_byte *contents;
3323 Elf_Internal_Rela *relocs;
3324 Elf_Internal_Sym *local_syms;
3325 asection **local_sections;
3326{
3327 Elf_Internal_Shdr *symtab_hdr;
3328 Elf_Internal_Rela *rel;
3329 Elf_Internal_Rela *relend;
ff12f303
ILT		 3330 asection *sec, *sgot, *srel, *srelgot;
3331 bfd *dynobj, *gotobj;
297a4f1a
ILT		 3332 bfd_vma gp;
3333
ff12f303
ILT		 3334 srelgot = srel = NULL;
3335 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3336 dynobj = elf_hash_table (info)->dynobj;
3337 if (dynobj)
3338 {
3339 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3340 }
297a4f1a
ILT		 3341
3342 /* Find the gp value for this input bfd. */
3343 sgot = NULL;
3344 gp = 0;
ff12f303
ILT		 3345 gotobj = alpha_elf_tdata (input_bfd)->gotobj;
3346 if (gotobj)
297a4f1a 3347 {
ff12f303
ILT		 3348 sgot = alpha_elf_tdata (gotobj)->got;
3349 gp = _bfd_get_gp_value (gotobj);
297a4f1a
ILT		 3350 if (gp == 0)
3351 {
3352 gp = (sgot->output_section->vma
3353 + sgot->output_offset
3354 + 0x8000);
ff12f303 3355 _bfd_set_gp_value (gotobj, gp);
297a4f1a
ILT		 3356 }
3357 }
3358
3359 rel = relocs;
3360 relend = relocs + input_section->reloc_count;
3361 for (; rel < relend; rel++)
3362 {
3363 int r_type;
3364 reloc_howto_type *howto;
3365 unsigned long r_symndx;
ff12f303 3366 struct alpha_elf_link_hash_entry *h;
297a4f1a
ILT		 3367 Elf_Internal_Sym *sym;
3368 bfd_vma relocation;
3369 bfd_vma addend;
3370 bfd_reloc_status_type r;
3371
3372 r_type = ELF64_R_TYPE(rel->r_info);
3373 if (r_type < 0 || r_type >= (int) R_ALPHA_max)
3374 {
3375 bfd_set_error (bfd_error_bad_value);
3376 return false;
3377 }
3378 howto = elf64_alpha_howto_table + r_type;
3379
3380 r_symndx = ELF64_R_SYM(rel->r_info);
3381
3382 if (info->relocateable)
3383 {
3384 /* This is a relocateable link. We don't have to change
3385 anything, unless the reloc is against a section symbol,
3386 in which case we have to adjust according to where the
3387 section symbol winds up in the output section. */
3388 if (r_symndx < symtab_hdr->sh_info)
3389 {
3390 sym = local_syms + r_symndx;
3391 if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
3392 {
3393 sec = local_sections[r_symndx];
3394 rel->r_addend += sec->output_offset + sym->st_value;
3395 }
3396 }
3397
3398 continue;
3399 }
3400
3401 /* This is a final link. */
3402
3403 h = NULL;
3404 sym = NULL;
3405 sec = NULL;
3406
3407 if (r_symndx < symtab_hdr->sh_info)
3408 {
3409 sym = local_syms + r_symndx;
3410 sec = local_sections[r_symndx];
3411 relocation = (sec->output_section->vma
3412 + sec->output_offset
3413 + sym->st_value);
3414 }
3415 else
3416 {
ff12f303 3417 h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info];
297a4f1a 3418
ff12f303
ILT		 3419 while (h->root.root.type == bfd_link_hash_indirect
3420 || h->root.root.type == bfd_link_hash_warning)
3421 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
297a4f1a 3422
ff12f303
ILT		 3423 if (h->root.root.type == bfd_link_hash_defined
3424 || h->root.root.type == bfd_link_hash_defweak)
297a4f1a 3425 {
ff12f303 3426 sec = h->root.root.u.def.section;
297a4f1a
ILT		 3427
3428#if rth_notdef
3429 if ((r_type == R_ALPHA_LITERAL
3430 && elf_hash_table(info)->dynamic_sections_created
3431 && (!info->shared
3432 || !info->symbolic
ff12f303 3433 || !(h->root.elf_link_hash_flags
297a4f1a
ILT		 3434 & ELF_LINK_HASH_DEF_REGULAR)))
3435 || (info->shared
3436 && (!info->symbolic
ff12f303 3437 || !(h->root.elf_link_hash_flags
297a4f1a
ILT		 3438 & ELF_LINK_HASH_DEF_REGULAR))
3439 && (input_section->flags & SEC_ALLOC)
3440 && (r_type == R_ALPHA_REFLONG
3441 || r_type == R_ALPHA_REFQUAD
3442 || r_type == R_ALPHA_LITERAL)))
3443 {
3444 /* In these cases, we don't need the relocation value.
3445 We check specially because in some obscure cases
3446 sec->output_section will be NULL. */
3447 relocation = 0;
3448 }
3449#else
3450 /* FIXME: Are not these obscure cases simply bugs? Let's
3451 get something working and come back to this. */
3452 if (sec->output_section == NULL)
3453 relocation = 0;
3454#endif /* rth_notdef */
3455 else
3456 {
ff12f303 3457 relocation = (h->root.root.u.def.value
297a4f1a
ILT		 3458 + sec->output_section->vma
3459 + sec->output_offset);
3460 }
3461 }
ff12f303 3462 else if (h->root.root.type == bfd_link_hash_undefweak)
297a4f1a
ILT		 3463 relocation = 0;
3464 else if (info->shared && !info->symbolic)
3465 relocation = 0;
3466 else
3467 {
3468 if (!((*info->callbacks->undefined_symbol)
ff12f303 3469 (info, h->root.root.root.string, input_bfd,
297a4f1a
ILT		 3470 input_section, rel->r_offset)))
3471 return false;
3472 relocation = 0;
3473 }
3474 }
3475 addend = rel->r_addend;
3476
3477 switch (r_type)
3478 {
3479 case R_ALPHA_GPDISP:
3480 {
3481 bfd_byte *p_ldah, *p_lda;
3482
ff12f303
ILT		 3483 BFD_ASSERT(gp != 0);
3484
297a4f1a
ILT		 3485 relocation = (input_section->output_section->vma
3486 + input_section->output_offset
3487 + rel->r_offset);
3488
3489 p_ldah = contents + rel->r_offset - input_section->vma;
3490 p_lda = p_ldah + rel->r_addend;
3491
3492 r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation,
3493 p_ldah, p_lda);
3494 }
3495 break;
3496
3497 case R_ALPHA_OP_PUSH:
3498 case R_ALPHA_OP_STORE:
3499 case R_ALPHA_OP_PSUB:
3500 case R_ALPHA_OP_PRSHIFT:
ff12f303 3501 /* We hate these silly beasts. */
297a4f1a
ILT		 3502 abort();
3503
3504 case R_ALPHA_LITERAL:
3505 {
ff12f303 3506 struct alpha_elf_got_entry *gotent;
297a4f1a 3507
297a4f1a 3508 BFD_ASSERT(sgot != NULL);
ff12f303
ILT		 3509 BFD_ASSERT(gp != 0);
3510
297a4f1a
ILT		 3511 if (h != NULL)
3512 {
ff12f303 3513 gotent = h->got_entries;
69842d08 3514 BFD_ASSERT(gotent != NULL);
3a13dd8f 3515
ff12f303
ILT		 3516 while (gotent->gotobj != gotobj || gotent->addend != addend)
3517 gotent = gotent->next;
297a4f1a 3518
ff12f303
ILT		 3519 /* Initialize the .got entry's value. */
3520 if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE))
3521 {
3522 bfd_put_64 (output_bfd, relocation+addend,
3523 sgot->contents + gotent->got_offset);
297a4f1a 3524
6a587c4a
RH		 3525 /* If the symbol has been forced local, output a
3526 RELATIVE reloc, otherwise it will be handled in
3527 finish_dynamic_symbol. */
3528 if (info->shared && h->root.dynindx == -1)
3529 {
3530 Elf_Internal_Rela outrel;
3531
3532 BFD_ASSERT(srelgot != NULL);
3533
3534 outrel.r_offset = (sgot->output_section->vma
3535 + sgot->output_offset
3536 + gotent->got_offset);
3537 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
3538 outrel.r_addend = 0;
3539
3540 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3541 ((Elf64_External_Rela *)
3542 srelgot->contents)
3543 + srelgot->reloc_count++);
3544 }
297a4f1a 3545
ff12f303
ILT		 3546 gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE;
3547 }
3548 }
3549 else
3550 {
3551 gotent = (alpha_elf_tdata(input_bfd)->
3552 local_got_entries[r_symndx]);
3553 while (gotent->addend != addend)
3554 gotent = gotent->next;
3555
3556 if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE))
3557 {
3558 bfd_put_64 (output_bfd, relocation+addend,
3559 sgot->contents + gotent->got_offset);
3560
3561 /* Local got entries need RELATIVE relocs in shared
3562 libraries. */
3563 if (info->shared)
3564 {
3565 Elf_Internal_Rela outrel;
3566
3567 BFD_ASSERT(srelgot != NULL);
3568
3569 outrel.r_offset = (sgot->output_section->vma
3570 + sgot->output_offset
3571 + gotent->got_offset);
3572 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
3573 outrel.r_addend = 0;
3574
3575 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3576 ((Elf64_External_Rela *)
3577 srelgot->contents)
3578 + srelgot->reloc_count++);
3579 }
3580
3581 gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE;
3582 }
297a4f1a 3583 }
297a4f1a
ILT		 3584
3585 /* Figure the gprel relocation. */
3586 addend = 0;
3587 relocation = (sgot->output_section->vma
3588 + sgot->output_offset
ff12f303 3589 + gotent->got_offset);
297a4f1a
ILT		 3590 relocation -= gp;
3591 }
3592 /* overflow handled by _bfd_final_link_relocate */
3593 goto default_reloc;
ff12f303 3594
297a4f1a 3595 case R_ALPHA_GPREL32:
69842d08
RH		 3596 case R_ALPHA_GPRELLOW:
3597 BFD_ASSERT(gp != 0);
3598 relocation -= gp;
3599 goto default_reloc;
3600
3601 case R_ALPHA_GPRELHIGH:
297a4f1a
ILT		 3602 BFD_ASSERT(gp != 0);
3603 relocation -= gp;
69842d08
RH		 3604 relocation += addend;
3605 addend = 0;
3606 relocation = (((bfd_signed_vma) relocation >> 16)
3607 + ((relocation >> 15) & 1));
297a4f1a
ILT		 3608 goto default_reloc;
3609
3610 case R_ALPHA_BRADDR:
3611 case R_ALPHA_HINT:
3612 /* The regular PC-relative stuff measures from the start of
3613 the instruction rather than the end. */
3614 addend -= 4;
3615 goto default_reloc;
ff12f303 3616
297a4f1a
ILT		 3617 case R_ALPHA_REFLONG:
3618 case R_ALPHA_REFQUAD:
ff12f303
ILT		 3619 {
3620 Elf_Internal_Rela outrel;
3a13dd8f 3621 boolean skip;
297a4f1a 3622
ff12f303
ILT		 3623 /* Careful here to remember RELATIVE relocations for global
3624 variables for symbolic shared objects. */
3625
3626 if (h && alpha_elf_dynamic_symbol_p (&h->root, info))
3627 {
3628 BFD_ASSERT(h->root.dynindx != -1);
3629 outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type);
3630 outrel.r_addend = addend;
3631 addend = 0, relocation = 0;
3632 }
3633 else if (info->shared)
3634 {
3635 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
3636 outrel.r_addend = 0;
3637 }
3638 else
3639 goto default_reloc;
3640
3641 if (!srel)
3642 {
3643 const char *name;
3644
3645 name = (bfd_elf_string_from_elf_section
3646 (input_bfd, elf_elfheader(input_bfd)->e_shstrndx,
3647 elf_section_data(input_section)->rel_hdr.sh_name));
3648 BFD_ASSERT(name != NULL);
3649
3650 srel = bfd_get_section_by_name (dynobj, name);
3651 BFD_ASSERT(srel != NULL);
3652 }
3653
3a13dd8f
RH		 3654 skip = false;
3655
3656 if (elf_section_data (input_section)->stab_info == NULL)
3657 outrel.r_offset = rel->r_offset;
3658 else
3659 {
3660 bfd_vma off;
3661
3662 off = (_bfd_stab_section_offset
3663 (output_bfd, &elf_hash_table (info)->stab_info,
3664 input_section,
3665 &elf_section_data (input_section)->stab_info,
3666 rel->r_offset));
3667 if (off == (bfd_vma) -1)
3668 skip = true;
3669 outrel.r_offset = off;
3670 }
3671
3672 if (! skip)
3673 outrel.r_offset += (input_section->output_section->vma
3674 + input_section->output_offset);
3675 else
3676 memset (&outrel, 0, sizeof outrel);
ff12f303
ILT		 3677
3678 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3679 ((Elf64_External_Rela *)
3680 srel->contents)
3681 + srel->reloc_count++);
3682 }
297a4f1a
ILT		 3683 goto default_reloc;
3684
3685 default:
3686 default_reloc:
3687 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3688 contents, rel->r_offset, relocation,
3689 addend);
3690 break;
3691 }
3692
3693 switch (r)
3694 {
3695 case bfd_reloc_ok:
3696 break;
3697
3698 case bfd_reloc_overflow:
3699 {
3700 const char *name;
3701
3702 if (h != NULL)
ff12f303 3703 name = h->root.root.root.string;
297a4f1a
ILT		 3704 else
3705 {
3706 name = (bfd_elf_string_from_elf_section
3707 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3708 if (name == NULL)
3709 return false;
3710 if (*name == '\0')
3711 name = bfd_section_name (input_bfd, sec);
3712 }
3713 if (! ((*info->callbacks->reloc_overflow)
3714 (info, name, howto->name, (bfd_vma) 0,
3715 input_bfd, input_section, rel->r_offset)))
3716 return false;
3717 }
3718 break;
3719
3720 default:
3721 case bfd_reloc_outofrange:
3722 abort ();
3723 }
3724 }
3725
3726 return true;
3727}
3728
3729/* Finish up dynamic symbol handling. We set the contents of various
3730 dynamic sections here. */
3731
3732static boolean
3733elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym)
3734 bfd *output_bfd;
3735 struct bfd_link_info *info;
3736 struct elf_link_hash_entry *h;
3737 Elf_Internal_Sym *sym;
3738{
3739 bfd *dynobj = elf_hash_table(info)->dynobj;
3740
3741 if (h->plt_offset != MINUS_ONE)
3742 {
ff12f303 3743 /* Fill in the .plt entry for this symbol. */
297a4f1a
ILT		 3744 asection *splt, *sgot, *srel;
3745 Elf_Internal_Rela outrel;
3746 bfd_vma got_addr, plt_addr;
3747 bfd_vma plt_index;
ff12f303 3748 struct alpha_elf_got_entry *gotent;
297a4f1a 3749
ff12f303 3750 BFD_ASSERT (h->dynindx != -1);
297a4f1a 3751
ff12f303
ILT		 3752 /* The first .got entry will be updated by the .plt with the
3753 address of the target function. */
3754 gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
3755 BFD_ASSERT (gotent && gotent->addend == 0);
297a4f1a 3756
ff12f303
ILT		 3757 splt = bfd_get_section_by_name (dynobj, ".plt");
3758 BFD_ASSERT (splt != NULL);
3759 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
3760 BFD_ASSERT (srel != NULL);
3761 sgot = alpha_elf_tdata (gotent->gotobj)->got;
3762 BFD_ASSERT (sgot != NULL);
297a4f1a
ILT		 3763
3764 got_addr = (sgot->output_section->vma
ff12f303
ILT		 3765 + sgot->output_offset
3766 + gotent->got_offset);
297a4f1a
ILT		 3767 plt_addr = (splt->output_section->vma
3768 + splt->output_offset
3769 + h->plt_offset);
3770
3771 plt_index = (h->plt_offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
3772
3773 /* Fill in the entry in the procedure linkage table. */
3774 {
3775 unsigned insn1, insn2, insn3;
297a4f1a 3776
3a13dd8f
RH		 3777 insn1 = PLT_ENTRY_WORD1 | ((-(h->plt_offset + 4) >> 2) & 0x1fffff);
3778 insn2 = PLT_ENTRY_WORD2;
3779 insn3 = PLT_ENTRY_WORD3;
ff12f303 3780
297a4f1a
ILT		 3781 bfd_put_32 (output_bfd, insn1, splt->contents + h->plt_offset);
3782 bfd_put_32 (output_bfd, insn2, splt->contents + h->plt_offset + 4);
3783 bfd_put_32 (output_bfd, insn3, splt->contents + h->plt_offset + 8);
3784 }
3785
3786 /* Fill in the entry in the .rela.plt section. */
3787 outrel.r_offset = got_addr;
3788 outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT);
3789 outrel.r_addend = 0;
3790
3791 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3792 ((Elf64_External_Rela *)srel->contents
3793 + plt_index));
3794
3795 if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3796 {
3797 /* Mark the symbol as undefined, rather than as defined in the
3798 .plt section. Leave the value alone. */
3799 sym->st_shndx = SHN_UNDEF;
3800 }
3801
ff12f303
ILT		 3802 /* Fill in the entries in the .got. */
3803 bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset);
3804
3805 /* Subsequent .got entries will continue to bounce through the .plt. */
3806 while ((gotent = gotent->next) != NULL)
3807 {
3808 sgot = alpha_elf_tdata(gotent->gotobj)->got;
3809 BFD_ASSERT(sgot != NULL);
3810 BFD_ASSERT(gotent->addend == 0);
3811
3812 bfd_put_64 (output_bfd, plt_addr,
3813 sgot->contents + gotent->got_offset);
3814 }
297a4f1a 3815 }
ff12f303 3816 else if (alpha_elf_dynamic_symbol_p (h, info))
297a4f1a 3817 {
ff12f303
ILT		 3818 /* Fill in the dynamic relocations for this symbol's .got entries. */
3819 asection *srel;
297a4f1a 3820 Elf_Internal_Rela outrel;
ff12f303 3821 struct alpha_elf_got_entry *gotent;
297a4f1a 3822
297a4f1a
ILT		 3823 srel = bfd_get_section_by_name (dynobj, ".rela.got");
3824 BFD_ASSERT (srel != NULL);
3825
ff12f303
ILT		 3826 outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT);
3827 for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
3828 gotent != NULL;
3829 gotent = gotent->next)
297a4f1a 3830 {
ff12f303
ILT		 3831 asection *sgot = alpha_elf_tdata (gotent->gotobj)->got;
3832 outrel.r_offset = (sgot->output_section->vma
3833 + sgot->output_offset
3834 + gotent->got_offset);
3835 outrel.r_addend = gotent->addend;
3836
3837 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3838 ((Elf64_External_Rela *)srel->contents
3839 + srel->reloc_count++));
297a4f1a 3840 }
297a4f1a
ILT		 3841 }
3842
3843 /* Mark some specially defined symbols as absolute. */
3844 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3845 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3846 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3847 sym->st_shndx = SHN_ABS;
3848
3849 return true;
3850}
3851
3852/* Finish up the dynamic sections. */
3853
3854static boolean
3855elf64_alpha_finish_dynamic_sections (output_bfd, info)
3856 bfd *output_bfd;
3857 struct bfd_link_info *info;
3858{
3859 bfd *dynobj;
3860 asection *sdyn;
297a4f1a
ILT		 3861
3862 dynobj = elf_hash_table (info)->dynobj;
3863 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3864
3865 if (elf_hash_table (info)->dynamic_sections_created)
3866 {
3867 asection *splt;
3868 Elf64_External_Dyn *dyncon, *dynconend;
3869
3870 splt = bfd_get_section_by_name (dynobj, ".plt");
3871 BFD_ASSERT (splt != NULL && sdyn != NULL);
3872
3873 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3874 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3875 for (; dyncon < dynconend; dyncon++)
3876 {
3877 Elf_Internal_Dyn dyn;
3878 const char *name;
3879 asection *s;
3880
3881 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3882
3883 switch (dyn.d_tag)
3884 {
3885 case DT_PLTGOT:
3886 name = ".plt";
3887 goto get_vma;
3888 case DT_PLTRELSZ:
3889 name = ".rela.plt";
3890 goto get_size;
3891 case DT_JMPREL:
3892 name = ".rela.plt";
3893 goto get_vma;
3894
3895 case DT_RELASZ:
3896 /* My interpretation of the TIS v1.1 ELF document indicates
3897 that RELASZ should not include JMPREL. This is not what
ff12f303
ILT		 3898 the rest of the BFD does. It is, however, what the
3899 glibc ld.so wants. Do this fixup here until we found
297a4f1a
ILT		 3900 out who is right. */
3901 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
3902 if (s)
3903 {
3904 dyn.d_un.d_val -=
3905 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
3906 }
3907 break;
3908
3909 get_vma:
3910 s = bfd_get_section_by_name (output_bfd, name);
3911 dyn.d_un.d_ptr = (s ? s->vma : 0);
3912 break;
3913
3914 get_size:
3915 s = bfd_get_section_by_name (output_bfd, name);
3916 dyn.d_un.d_val =
3917 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
3918 break;
3919 }
3920
3921 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3922 }
3923
3924 /* Initialize the PLT0 entry */
3925 if (splt->_raw_size > 0)
3926 {
3927 bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents);
3928 bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4);
3929 bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8);
3930 bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12);
ff12f303 3931
297a4f1a
ILT		 3932 /* The next two words will be filled in by ld.so */
3933 bfd_put_64 (output_bfd, 0, splt->contents + 16);
3934 bfd_put_64 (output_bfd, 0, splt->contents + 24);
3935
ff12f303 3936 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
297a4f1a
ILT		 3937 PLT_HEADER_SIZE;
3938 }
3939 }
3940
297a4f1a
ILT		 3941 if (info->shared)
3942 {
3943 asection *sdynsym;
3944 asection *s;
3945 Elf_Internal_Sym sym;
3946
3947 /* Set up the section symbols for the output sections. */
3948
3949 sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
3950 BFD_ASSERT (sdynsym != NULL);
3951
3952 sym.st_size = 0;
3953 sym.st_name = 0;
3954 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
3955 sym.st_other = 0;
3956
3957 for (s = output_bfd->sections; s != NULL; s = s->next)
3958 {
3959 int indx;
3960
3961 sym.st_value = s->vma;
3962
3963 indx = elf_section_data (s)->this_idx;
3964 BFD_ASSERT (indx > 0);
3965 sym.st_shndx = indx;
3966
3967 bfd_elf64_swap_symbol_out (output_bfd, &sym,
3968 (PTR) (((Elf64_External_Sym *)
3969 sdynsym->contents)
3970 + elf_section_data (s)->dynindx));
3971 }
3972
3973 /* Set the sh_info field of the output .dynsym section to the
3974 index of the first global symbol. */
3975 elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
3976 bfd_count_sections (output_bfd) + 1;
3977 }
3978
3979 return true;
3980}
3981
3982/* We need to use a special link routine to handle the .reginfo and
3983 the .mdebug sections. We need to merge all instances of these
3984 sections together, not write them all out sequentially. */
3985
3986static boolean
3987elf64_alpha_final_link (abfd, info)
3988 bfd *abfd;
3989 struct bfd_link_info *info;
3990{
3991 asection *o;
3992 struct bfd_link_order *p;
3993 asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
3994 struct ecoff_debug_info debug;
3995 const struct ecoff_debug_swap *swap
3996 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
3997 HDRR *symhdr = &debug.symbolic_header;
3998 PTR mdebug_handle = NULL;
3999
4000 /* Go through the sections and collect the .reginfo and .mdebug
4001 information. */
4002 reginfo_sec = NULL;
4003 mdebug_sec = NULL;
4004 gptab_data_sec = NULL;
4005 gptab_bss_sec = NULL;
4006 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4007 {
4008#ifdef ERIC_neverdef
4009 if (strcmp (o->name, ".reginfo") == 0)
4010 {
4011 memset (&reginfo, 0, sizeof reginfo);
4012
4013 /* We have found the .reginfo section in the output file.
4014 Look through all the link_orders comprising it and merge
4015 the information together. */
4016 for (p = o->link_order_head;
4017 p != (struct bfd_link_order *) NULL;
4018 p = p->next)
4019 {
4020 asection *input_section;
4021 bfd *input_bfd;
4022 Elf64_External_RegInfo ext;
4023 Elf64_RegInfo sub;
4024
4025 if (p->type != bfd_indirect_link_order)
4026 {
4027 if (p->type == bfd_fill_link_order)
4028 continue;
4029 abort ();
4030 }
4031
4032 input_section = p->u.indirect.section;
4033 input_bfd = input_section->owner;
4034
4035 /* The linker emulation code has probably clobbered the
4036 size to be zero bytes. */
4037 if (input_section->_raw_size == 0)
4038 input_section->_raw_size = sizeof (Elf64_External_RegInfo);
4039
4040 if (! bfd_get_section_contents (input_bfd, input_section,
4041 (PTR) &ext,
4042 (file_ptr) 0,
4043 sizeof ext))
4044 return false;
4045
4046 bfd_alpha_elf64_swap_reginfo_in (input_bfd, &ext, &sub);
4047
4048 reginfo.ri_gprmask |= sub.ri_gprmask;
4049 reginfo.ri_cprmask[0] |= sub.ri_cprmask[0];
4050 reginfo.ri_cprmask[1] |= sub.ri_cprmask[1];
4051 reginfo.ri_cprmask[2] |= sub.ri_cprmask[2];
4052 reginfo.ri_cprmask[3] |= sub.ri_cprmask[3];
4053
4054 /* ri_gp_value is set by the function
4055 alpha_elf_section_processing when the section is
4056 finally written out. */
4057
4058 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4059 elf_link_input_bfd ignores this section. */
4060 input_section->flags &=~ SEC_HAS_CONTENTS;
4061 }
4062
4063 /* Force the section size to the value we want. */
4064 o->_raw_size = sizeof (Elf64_External_RegInfo);
4065
4066 /* Skip this section later on (I don't think this currently
4067 matters, but someday it might). */
4068 o->link_order_head = (struct bfd_link_order *) NULL;
4069
4070 reginfo_sec = o;
4071 }
4072#endif
4073
4074 if (strcmp (o->name, ".mdebug") == 0)
4075 {
4076 struct extsym_info einfo;
4077
4078 /* We have found the .mdebug section in the output file.
4079 Look through all the link_orders comprising it and merge
4080 the information together. */
4081 symhdr->magic = swap->sym_magic;
4082 /* FIXME: What should the version stamp be? */
4083 symhdr->vstamp = 0;
4084 symhdr->ilineMax = 0;
4085 symhdr->cbLine = 0;
4086 symhdr->idnMax = 0;
4087 symhdr->ipdMax = 0;
4088 symhdr->isymMax = 0;
4089 symhdr->ioptMax = 0;
4090 symhdr->iauxMax = 0;
4091 symhdr->issMax = 0;
4092 symhdr->issExtMax = 0;
4093 symhdr->ifdMax = 0;
4094 symhdr->crfd = 0;
4095 symhdr->iextMax = 0;
4096
4097 /* We accumulate the debugging information itself in the
4098 debug_info structure. */
4099 debug.line = NULL;
4100 debug.external_dnr = NULL;
4101 debug.external_pdr = NULL;
4102 debug.external_sym = NULL;
4103 debug.external_opt = NULL;
4104 debug.external_aux = NULL;
4105 debug.ss = NULL;
4106 debug.ssext = debug.ssext_end = NULL;
4107 debug.external_fdr = NULL;
4108 debug.external_rfd = NULL;
4109 debug.external_ext = debug.external_ext_end = NULL;
4110
4111 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
4112 if (mdebug_handle == (PTR) NULL)
4113 return false;
4114
4115 if (1)
4116 {
4117 asection *s;
4118 EXTR esym;
4119 bfd_vma last;
4120 unsigned int i;
4121 static const char * const name[] =
4122 {
4123 ".text", ".init", ".fini", ".data",
4124 ".rodata", ".sdata", ".sbss", ".bss"
4125 };
4126 static const int sc[] = { scText, scInit, scFini, scData,
4127 scRData, scSData, scSBss, scBss };
4128
4129 esym.jmptbl = 0;
4130 esym.cobol_main = 0;
4131 esym.weakext = 0;
4132 esym.reserved = 0;
4133 esym.ifd = ifdNil;
4134 esym.asym.iss = issNil;
4135 esym.asym.st = stLocal;
4136 esym.asym.reserved = 0;
4137 esym.asym.index = indexNil;
4138 for (i = 0; i < 8; i++)
4139 {
4140 esym.asym.sc = sc[i];
4141 s = bfd_get_section_by_name (abfd, name[i]);
4142 if (s != NULL)
4143 {
4144 esym.asym.value = s->vma;
4145 last = s->vma + s->_raw_size;
4146 }
4147 else
4148 esym.asym.value = last;
ff12f303 4149
297a4f1a
ILT		 4150 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
4151 name[i], &esym))
4152 return false;
4153 }
4154 }
4155
4156 for (p = o->link_order_head;
4157 p != (struct bfd_link_order *) NULL;
4158 p = p->next)
4159 {
4160 asection *input_section;
4161 bfd *input_bfd;
4162 const struct ecoff_debug_swap *input_swap;
4163 struct ecoff_debug_info input_debug;
4164 char *eraw_src;
4165 char *eraw_end;
4166
4167 if (p->type != bfd_indirect_link_order)
4168 {
4169 if (p->type == bfd_fill_link_order)
4170 continue;
4171 abort ();
4172 }
4173
4174 input_section = p->u.indirect.section;
4175 input_bfd = input_section->owner;
4176
4177 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
4178 || (get_elf_backend_data (input_bfd)
4179 ->elf_backend_ecoff_debug_swap) == NULL)
4180 {
4181 /* I don't know what a non ALPHA ELF bfd would be
4182 doing with a .mdebug section, but I don't really
4183 want to deal with it. */
4184 continue;
4185 }
4186
4187 input_swap = (get_elf_backend_data (input_bfd)
4188 ->elf_backend_ecoff_debug_swap);
4189
4190 BFD_ASSERT (p->size == input_section->_raw_size);
4191
4192 /* The ECOFF linking code expects that we have already
4193 read in the debugging information and set up an
4194 ecoff_debug_info structure, so we do that now. */
4195 if (!elf64_alpha_read_ecoff_info (input_bfd, input_section,
4196 &input_debug))
4197 return false;
4198
4199 if (! (bfd_ecoff_debug_accumulate
4200 (mdebug_handle, abfd, &debug, swap, input_bfd,
4201 &input_debug, input_swap, info)))
4202 return false;
4203
4204 /* Loop through the external symbols. For each one with
4205 interesting information, try to find the symbol in
4206 the linker global hash table and save the information
4207 for the output external symbols. */
4208 eraw_src = input_debug.external_ext;
4209 eraw_end = (eraw_src
4210 + (input_debug.symbolic_header.iextMax
4211 * input_swap->external_ext_size));
4212 for (;
4213 eraw_src < eraw_end;
4214 eraw_src += input_swap->external_ext_size)
4215 {
4216 EXTR ext;
4217 const char *name;
4218 struct alpha_elf_link_hash_entry *h;
4219
4220 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
4221 if (ext.asym.sc == scNil
4222 || ext.asym.sc == scUndefined
4223 || ext.asym.sc == scSUndefined)
4224 continue;
4225
4226 name = input_debug.ssext + ext.asym.iss;
4227 h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info),
4228 name, false, false, true);
4229 if (h == NULL || h->esym.ifd != -2)
4230 continue;
4231
4232 if (ext.ifd != -1)
4233 {
4234 BFD_ASSERT (ext.ifd
4235 < input_debug.symbolic_header.ifdMax);
4236 ext.ifd = input_debug.ifdmap[ext.ifd];
4237 }
4238
4239 h->esym = ext;
4240 }
4241
4242 /* Free up the information we just read. */
4243 free (input_debug.line);
4244 free (input_debug.external_dnr);
4245 free (input_debug.external_pdr);
4246 free (input_debug.external_sym);
4247 free (input_debug.external_opt);
4248 free (input_debug.external_aux);
4249 free (input_debug.ss);
4250 free (input_debug.ssext);
4251 free (input_debug.external_fdr);
4252 free (input_debug.external_rfd);
4253 free (input_debug.external_ext);
4254
4255 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4256 elf_link_input_bfd ignores this section. */
4257 input_section->flags &=~ SEC_HAS_CONTENTS;
4258 }
4259
4260#ifdef ERIC_neverdef
4261 if (info->shared)
4262 {
4263 /* Create .rtproc section. */
4264 rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc");
4265 if (rtproc_sec == NULL)
4266 {
ff12f303
ILT		 4267 flagword flags = (SEC_HAS_CONTENTS
4268 | SEC_IN_MEMORY
4269 | SEC_LINKER_CREATED
297a4f1a
ILT		 4270 | SEC_READONLY);
4271
4272 rtproc_sec = bfd_make_section (abfd, ".rtproc");
4273 if (rtproc_sec == NULL
4274 || ! bfd_set_section_flags (abfd, rtproc_sec, flags)
4275 || ! bfd_set_section_alignment (abfd, rtproc_sec, 12))
4276 return false;
4277 }
4278
4279 if (! alpha_elf_create_procedure_table (mdebug_handle, abfd,
4280 info, rtproc_sec, &debug))
4281 return false;
4282 }
4283#endif
4284
4285
4286 /* Build the external symbol information. */
4287 einfo.abfd = abfd;
4288 einfo.info = info;
4289 einfo.debug = &debug;
4290 einfo.swap = swap;
4291 einfo.failed = false;
4292 elf_link_hash_traverse (elf_hash_table (info),
4293 elf64_alpha_output_extsym,
4294 (PTR) &einfo);
4295 if (einfo.failed)
4296 return false;
4297
4298 /* Set the size of the .mdebug section. */
4299 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
4300
4301 /* Skip this section later on (I don't think this currently
4302 matters, but someday it might). */
4303 o->link_order_head = (struct bfd_link_order *) NULL;
4304
4305 mdebug_sec = o;
4306 }
4307
4308#ifdef ERIC_neverdef
4309 if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
4310 {
4311 const char *subname;
4312 unsigned int c;
4313 Elf64_gptab *tab;
4314 Elf64_External_gptab *ext_tab;
4315 unsigned int i;
4316
4317 /* The .gptab.sdata and .gptab.sbss sections hold
4318 information describing how the small data area would
4319 change depending upon the -G switch. These sections
4320 not used in executables files. */
4321 if (! info->relocateable)
4322 {
4323 asection **secpp;
4324
4325 for (p = o->link_order_head;
4326 p != (struct bfd_link_order *) NULL;
4327 p = p->next)
4328 {
4329 asection *input_section;
4330
4331 if (p->type != bfd_indirect_link_order)
4332 {
4333 if (p->type == bfd_fill_link_order)
4334 continue;
4335 abort ();
4336 }
4337
4338 input_section = p->u.indirect.section;
4339
4340 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4341 elf_link_input_bfd ignores this section. */
4342 input_section->flags &=~ SEC_HAS_CONTENTS;
4343 }
4344
4345 /* Skip this section later on (I don't think this
4346 currently matters, but someday it might). */
4347 o->link_order_head = (struct bfd_link_order *) NULL;
4348
4349 /* Really remove the section. */
4350 for (secpp = &abfd->sections;
4351 *secpp != o;
4352 secpp = &(*secpp)->next)
4353 ;
4354 *secpp = (*secpp)->next;
4355 --abfd->section_count;
4356
4357 continue;
4358 }
4359
4360 /* There is one gptab for initialized data, and one for
4361 uninitialized data. */
4362 if (strcmp (o->name, ".gptab.sdata") == 0)
4363 gptab_data_sec = o;
4364 else if (strcmp (o->name, ".gptab.sbss") == 0)
4365 gptab_bss_sec = o;
4366 else
4367 {
4368 (*_bfd_error_handler)
4369 ("%s: illegal section name `%s'",
4370 bfd_get_filename (abfd), o->name);
4371 bfd_set_error (bfd_error_nonrepresentable_section);
4372 return false;
4373 }
4374
4375 /* The linker script always combines .gptab.data and
4376 .gptab.sdata into .gptab.sdata, and likewise for
4377 .gptab.bss and .gptab.sbss. It is possible that there is
4378 no .sdata or .sbss section in the output file, in which
4379 case we must change the name of the output section. */
4380 subname = o->name + sizeof ".gptab" - 1;
4381 if (bfd_get_section_by_name (abfd, subname) == NULL)
4382 {
4383 if (o == gptab_data_sec)
4384 o->name = ".gptab.data";
4385 else
4386 o->name = ".gptab.bss";
4387 subname = o->name + sizeof ".gptab" - 1;
4388 BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
4389 }
4390
4391 /* Set up the first entry. */
4392 c = 1;
4393 tab = (Elf64_gptab *) bfd_malloc (c * sizeof (Elf64_gptab));
4394 if (tab == NULL)
4395 return false;
4396 tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
4397 tab[0].gt_header.gt_unused = 0;
4398
4399 /* Combine the input sections. */
4400 for (p = o->link_order_head;
4401 p != (struct bfd_link_order *) NULL;
4402 p = p->next)
4403 {
4404 asection *input_section;
4405 bfd *input_bfd;
4406 bfd_size_type size;
4407 unsigned long last;
4408 bfd_size_type gpentry;
4409
4410 if (p->type != bfd_indirect_link_order)
4411 {
4412 if (p->type == bfd_fill_link_order)
4413 continue;
4414 abort ();
4415 }
4416
4417 input_section = p->u.indirect.section;
4418 input_bfd = input_section->owner;
4419
4420 /* Combine the gptab entries for this input section one
4421 by one. We know that the input gptab entries are
4422 sorted by ascending -G value. */
4423 size = bfd_section_size (input_bfd, input_section);
4424 last = 0;
4425 for (gpentry = sizeof (Elf64_External_gptab);
4426 gpentry < size;
4427 gpentry += sizeof (Elf64_External_gptab))
4428 {
4429 Elf64_External_gptab ext_gptab;
4430 Elf64_gptab int_gptab;
4431 unsigned long val;
4432 unsigned long add;
4433 boolean exact;
4434 unsigned int look;
4435
4436 if (! (bfd_get_section_contents
4437 (input_bfd, input_section, (PTR) &ext_gptab,
4438 gpentry, sizeof (Elf64_External_gptab))))
4439 {
4440 free (tab);
4441 return false;
4442 }
4443
4444 bfd_alpha_elf64_swap_gptab_in (input_bfd, &ext_gptab,
4445 &int_gptab);
4446 val = int_gptab.gt_entry.gt_g_value;
4447 add = int_gptab.gt_entry.gt_bytes - last;
4448
4449 exact = false;
4450 for (look = 1; look < c; look++)
4451 {
4452 if (tab[look].gt_entry.gt_g_value >= val)
4453 tab[look].gt_entry.gt_bytes += add;
4454
4455 if (tab[look].gt_entry.gt_g_value == val)
4456 exact = true;
4457 }
4458
4459 if (! exact)
4460 {
4461 Elf64_gptab *new_tab;
4462 unsigned int max;
4463
4464 /* We need a new table entry. */
4465 new_tab = ((Elf64_gptab *)
4466 bfd_realloc ((PTR) tab,
4467 (c + 1) * sizeof (Elf64_gptab)));
4468 if (new_tab == NULL)
4469 {
4470 free (tab);
4471 return false;
4472 }
4473 tab = new_tab;
4474 tab[c].gt_entry.gt_g_value = val;
4475 tab[c].gt_entry.gt_bytes = add;
4476
4477 /* Merge in the size for the next smallest -G
4478 value, since that will be implied by this new
4479 value. */
4480 max = 0;
4481 for (look = 1; look < c; look++)
4482 {
4483 if (tab[look].gt_entry.gt_g_value < val
4484 && (max == 0
4485 || (tab[look].gt_entry.gt_g_value
4486 > tab[max].gt_entry.gt_g_value)))
4487 max = look;
4488 }
4489 if (max != 0)
4490 tab[c].gt_entry.gt_bytes +=
4491 tab[max].gt_entry.gt_bytes;
4492
4493 ++c;
4494 }
4495
4496 last = int_gptab.gt_entry.gt_bytes;
4497 }
4498
4499 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4500 elf_link_input_bfd ignores this section. */
4501 input_section->flags &=~ SEC_HAS_CONTENTS;
4502 }
4503
4504 /* The table must be sorted by -G value. */
4505 if (c > 2)
4506 qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
4507
4508 /* Swap out the table. */
4509 ext_tab = ((Elf64_External_gptab *)
4510 bfd_alloc (abfd, c * sizeof (Elf64_External_gptab)));
4511 if (ext_tab == NULL)
4512 {
4513 free (tab);
4514 return false;
4515 }
4516
4517 for (i = 0; i < c; i++)
4518 bfd_alpha_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i);
4519 free (tab);
4520
4521 o->_raw_size = c * sizeof (Elf64_External_gptab);
4522 o->contents = (bfd_byte *) ext_tab;
4523
4524 /* Skip this section later on (I don't think this currently
4525 matters, but someday it might). */
4526 o->link_order_head = (struct bfd_link_order *) NULL;
4527 }
4528#endif
4529
4530 }
4531
4532 /* Invoke the regular ELF backend linker to do all the work. */
4533 if (! bfd_elf64_bfd_final_link (abfd, info))
4534 return false;
4535
4536 /* Now write out the computed sections. */
4537
ff12f303
ILT		 4538 /* The .got subsections... */
4539 {
4540 bfd *i, *dynobj = elf_hash_table(info)->dynobj;
4541 for (i = alpha_elf_hash_table(info)->got_list;
4542 i != NULL;
4543 i = alpha_elf_tdata(i)->got_link_next)
4544 {
4545 asection *sgot;
4546
4547 /* elf_bfd_final_link already did everything in dynobj. */
4548 if (i == dynobj)
4549 continue;
4550
4551 sgot = alpha_elf_tdata(i)->got;
4552 if (! bfd_set_section_contents (abfd, sgot->output_section,
4553 sgot->contents, sgot->output_offset,
4554 sgot->_raw_size))
4555 return false;
4556 }
4557 }
4558
297a4f1a
ILT		 4559#ifdef ERIC_neverdef
4560 if (reginfo_sec != (asection *) NULL)
4561 {
4562 Elf64_External_RegInfo ext;
4563
4564 bfd_alpha_elf64_swap_reginfo_out (abfd, &reginfo, &ext);
4565 if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext,
4566 (file_ptr) 0, sizeof ext))
4567 return false;
4568 }
4569#endif
4570
4571 if (mdebug_sec != (asection *) NULL)
4572 {
4573 BFD_ASSERT (abfd->output_has_begun);
4574 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
4575 swap, info,
4576 mdebug_sec->filepos))
4577 return false;
4578
4579 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
4580 }
4581
4582 if (gptab_data_sec != (asection *) NULL)
4583 {
4584 if (! bfd_set_section_contents (abfd, gptab_data_sec,
4585 gptab_data_sec->contents,
4586 (file_ptr) 0,
4587 gptab_data_sec->_raw_size))
4588 return false;
4589 }
4590
4591 if (gptab_bss_sec != (asection *) NULL)
4592 {
4593 if (! bfd_set_section_contents (abfd, gptab_bss_sec,
4594 gptab_bss_sec->contents,
4595 (file_ptr) 0,
4596 gptab_bss_sec->_raw_size))
4597 return false;
4598 }
4599
4600 return true;
4601}
4602\f
4603/* ECOFF swapping routines. These are used when dealing with the
4604 .mdebug section, which is in the ECOFF debugging format. Copied
4605 from elf32-mips.c. */
4606static const struct ecoff_debug_swap
4607elf64_alpha_ecoff_debug_swap =
4608{
4609 /* Symbol table magic number. */
4610 magicSym2,
4611 /* Alignment of debugging information. E.g., 4. */
4612 8,
4613 /* Sizes of external symbolic information. */
4614 sizeof (struct hdr_ext),
4615 sizeof (struct dnr_ext),
4616 sizeof (struct pdr_ext),
4617 sizeof (struct sym_ext),
4618 sizeof (struct opt_ext),
4619 sizeof (struct fdr_ext),
4620 sizeof (struct rfd_ext),
4621 sizeof (struct ext_ext),
4622 /* Functions to swap in external symbolic data. */
4623 ecoff_swap_hdr_in,
4624 ecoff_swap_dnr_in,
4625 ecoff_swap_pdr_in,
4626 ecoff_swap_sym_in,
4627 ecoff_swap_opt_in,
4628 ecoff_swap_fdr_in,
4629 ecoff_swap_rfd_in,
4630 ecoff_swap_ext_in,
4631 _bfd_ecoff_swap_tir_in,
4632 _bfd_ecoff_swap_rndx_in,
4633 /* Functions to swap out external symbolic data. */
4634 ecoff_swap_hdr_out,
4635 ecoff_swap_dnr_out,
4636 ecoff_swap_pdr_out,
4637 ecoff_swap_sym_out,
4638 ecoff_swap_opt_out,
4639 ecoff_swap_fdr_out,
4640 ecoff_swap_rfd_out,
4641 ecoff_swap_ext_out,
4642 _bfd_ecoff_swap_tir_out,
4643 _bfd_ecoff_swap_rndx_out,
4644 /* Function to read in symbolic data. */
4645 elf64_alpha_read_ecoff_info
4646};
4647\f
4648#define TARGET_LITTLE_SYM bfd_elf64_alpha_vec
4649#define TARGET_LITTLE_NAME "elf64-alpha"
4650#define ELF_ARCH bfd_arch_alpha
4651#define ELF_MACHINE_CODE EM_ALPHA
69842d08 4652#define ELF_MAXPAGESIZE 0x10000
297a4f1a
ILT		 4653
4654#define bfd_elf64_bfd_link_hash_table_create \
4655 elf64_alpha_bfd_link_hash_table_create
4656
4657#define bfd_elf64_bfd_reloc_type_lookup \
4658 elf64_alpha_bfd_reloc_type_lookup
4659#define elf_info_to_howto \
4660 elf64_alpha_info_to_howto
4661
ff12f303
ILT		 4662#define bfd_elf64_mkobject \
4663 elf64_alpha_mkobject
297a4f1a 4664#define elf_backend_object_p \
ff12f303 4665 elf64_alpha_object_p
3a13dd8f 4666
297a4f1a
ILT		 4667#define elf_backend_section_from_shdr \
4668 elf64_alpha_section_from_shdr
4669#define elf_backend_fake_sections \
4670 elf64_alpha_fake_sections
4671#define elf_backend_additional_program_headers \
4672 elf64_alpha_additional_program_headers
4673
303e7257
ILT		 4674#define bfd_elf64_bfd_is_local_label_name \
4675 elf64_alpha_is_local_label_name
297a4f1a
ILT		 4676#define bfd_elf64_find_nearest_line \
4677 elf64_alpha_find_nearest_line
69842d08
RH		 4678#define bfd_elf64_bfd_relax_section \
4679 elf64_alpha_relax_section
297a4f1a 4680
69842d08
RH		 4681#define elf_backend_add_symbol_hook \
4682 elf64_alpha_add_symbol_hook
297a4f1a
ILT		 4683#define elf_backend_check_relocs \
4684 elf64_alpha_check_relocs
4685#define elf_backend_create_dynamic_sections \
4686 elf64_alpha_create_dynamic_sections
4687#define elf_backend_adjust_dynamic_symbol \
4688 elf64_alpha_adjust_dynamic_symbol
ff12f303
ILT		 4689#define elf_backend_always_size_sections \
4690 elf64_alpha_always_size_sections
297a4f1a
ILT		 4691#define elf_backend_size_dynamic_sections \
4692 elf64_alpha_size_dynamic_sections
4693#define elf_backend_relocate_section \
4694 elf64_alpha_relocate_section
4695#define elf_backend_finish_dynamic_symbol \
4696 elf64_alpha_finish_dynamic_symbol
4697#define elf_backend_finish_dynamic_sections \
4698 elf64_alpha_finish_dynamic_sections
4699#define bfd_elf64_bfd_final_link \
4700 elf64_alpha_final_link
4701
4702#define elf_backend_ecoff_debug_swap \
4703 &elf64_alpha_ecoff_debug_swap
4704
4705/*
4706 * A few constants that determine how the .plt section is set up.
4707 */
4708#define elf_backend_want_got_plt 0
4709#define elf_backend_plt_readonly 0
4710#define elf_backend_want_plt_sym 1
4711
4712#include "elf64-target.h"
GDB Binutils - Deliverables
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