1 /* Alpha specific support for 64-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Contributed by Richard Henderson <rth@tamu.edu>.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* We need a published ABI spec for this. Until one comes out, don't
23 assume this'll remain unchanged forever. */
30 #include "elf/alpha.h"
34 #define NO_COFF_RELOCS
35 #define NO_COFF_SYMBOLS
36 #define NO_COFF_LINENOS
38 /* Get the ECOFF swapping routines. Needed for the debug information. */
39 #include "coff/internal.h"
41 #include "coff/symconst.h"
42 #include "coff/ecoff.h"
43 #include "coff/alpha.h"
48 #include "ecoffswap.h"
50 static int alpha_elf_dynamic_symbol_p
51 PARAMS((struct elf_link_hash_entry *, struct bfd_link_info *));
52 static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc
53 PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
54 static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create
57 static bfd_reloc_status_type elf64_alpha_reloc_nil
58 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
59 static bfd_reloc_status_type elf64_alpha_reloc_bad
60 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
61 static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp
62 PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *));
63 static bfd_reloc_status_type elf64_alpha_reloc_gpdisp
64 PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
66 static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup
67 PARAMS((bfd *, bfd_reloc_code_real_type));
68 static void elf64_alpha_info_to_howto
69 PARAMS((bfd *, arelent *, Elf64_Internal_Rela *));
71 static boolean elf64_alpha_mkobject
73 static boolean elf64_alpha_object_p
75 static boolean elf64_alpha_section_from_shdr
76 PARAMS((bfd *, Elf64_Internal_Shdr *, char *));
77 static boolean elf64_alpha_section_flags
78 PARAMS((flagword *, Elf64_Internal_Shdr *));
79 static boolean elf64_alpha_fake_sections
80 PARAMS((bfd *, Elf64_Internal_Shdr *, asection *));
81 static boolean elf64_alpha_create_got_section
82 PARAMS((bfd *, struct bfd_link_info *));
83 static boolean elf64_alpha_create_dynamic_sections
84 PARAMS((bfd *, struct bfd_link_info *));
86 static boolean elf64_alpha_read_ecoff_info
87 PARAMS((bfd *, asection *, struct ecoff_debug_info *));
88 static boolean elf64_alpha_is_local_label_name
89 PARAMS((bfd *, const char *));
90 static boolean elf64_alpha_find_nearest_line
91 PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **,
92 const char **, unsigned int *));
94 #if defined(__STDC__) || defined(ALMOST_STDC)
95 struct alpha_elf_link_hash_entry;
98 static boolean elf64_alpha_output_extsym
99 PARAMS((struct alpha_elf_link_hash_entry *, PTR));
101 static boolean elf64_alpha_can_merge_gots
102 PARAMS((bfd *, bfd *));
103 static void elf64_alpha_merge_gots
104 PARAMS((bfd *, bfd *));
105 static boolean elf64_alpha_calc_got_offsets_for_symbol
106 PARAMS ((struct alpha_elf_link_hash_entry *, PTR));
107 static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *));
108 static boolean elf64_alpha_size_got_sections
109 PARAMS ((bfd *, struct bfd_link_info *));
110 static boolean elf64_alpha_always_size_sections
111 PARAMS ((bfd *, struct bfd_link_info *));
112 static int alpha_dynamic_entries_for_reloc
113 PARAMS ((int, int, int));
114 static boolean elf64_alpha_calc_dynrel_sizes
115 PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *));
116 static boolean elf64_alpha_add_symbol_hook
117 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
118 const char **, flagword *, asection **, bfd_vma *));
119 static struct alpha_elf_got_entry *get_got_entry
120 PARAMS ((bfd *, struct alpha_elf_link_hash_entry *, unsigned long,
121 unsigned long, bfd_vma));
122 static boolean elf64_alpha_check_relocs
123 PARAMS((bfd *, struct bfd_link_info *, asection *sec,
124 const Elf_Internal_Rela *));
125 static boolean elf64_alpha_adjust_dynamic_symbol
126 PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *));
127 static boolean elf64_alpha_size_dynamic_sections
128 PARAMS((bfd *, struct bfd_link_info *));
129 static boolean elf64_alpha_relocate_section
130 PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
131 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
132 static boolean elf64_alpha_finish_dynamic_symbol
133 PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
134 Elf_Internal_Sym *));
135 static boolean elf64_alpha_finish_dynamic_sections
136 PARAMS((bfd *, struct bfd_link_info *));
137 static boolean elf64_alpha_final_link
138 PARAMS((bfd *, struct bfd_link_info *));
139 static boolean elf64_alpha_merge_ind_symbols
140 PARAMS((struct alpha_elf_link_hash_entry *, PTR));
141 static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs
142 PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int));
143 static enum elf_reloc_type_class elf64_alpha_reloc_type_class
144 PARAMS ((const Elf_Internal_Rela *));
146 struct alpha_elf_link_hash_entry
148 struct elf_link_hash_entry root;
150 /* External symbol information. */
153 /* Cumulative flags for all the .got entries. */
156 /* Contexts (LITUSE) in which a literal was referenced. */
157 #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01
158 #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02
159 #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04
160 #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08
161 #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10
162 #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20
163 #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38
165 /* Used to implement multiple .got subsections. */
166 struct alpha_elf_got_entry
168 struct alpha_elf_got_entry *next;
170 /* which .got subsection? */
173 /* the addend in effect for this entry. */
176 /* the .got offset for this entry. */
179 /* How many references to this entry? */
182 /* The relocation type of this entry. */
183 unsigned char reloc_type;
185 /* How a LITERAL is used. */
188 /* Have we initialized the dynamic relocation for this entry? */
189 unsigned char reloc_done;
191 /* Have we adjusted this entry for SEC_MERGE? */
192 unsigned char reloc_xlated;
195 /* used to count non-got, non-plt relocations for delayed sizing
196 of relocation sections. */
197 struct alpha_elf_reloc_entry
199 struct alpha_elf_reloc_entry *next;
201 /* which .reloc section? */
204 /* what kind of relocation? */
207 /* is this against read-only section? */
208 unsigned int reltext : 1;
210 /* how many did we find? */
215 /* Alpha ELF linker hash table. */
217 struct alpha_elf_link_hash_table
219 struct elf_link_hash_table root;
221 /* The head of a list of .got subsections linked through
222 alpha_elf_tdata(abfd)->got_link_next. */
226 /* Look up an entry in a Alpha ELF linker hash table. */
228 #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \
229 ((struct alpha_elf_link_hash_entry *) \
230 elf_link_hash_lookup (&(table)->root, (string), (create), \
233 /* Traverse a Alpha ELF linker hash table. */
235 #define alpha_elf_link_hash_traverse(table, func, info) \
236 (elf_link_hash_traverse \
238 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
241 /* Get the Alpha ELF linker hash table from a link_info structure. */
243 #define alpha_elf_hash_table(p) \
244 ((struct alpha_elf_link_hash_table *) ((p)->hash))
246 /* Get the object's symbols as our own entry type. */
248 #define alpha_elf_sym_hashes(abfd) \
249 ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd))
251 /* Should we do dynamic things to this symbol? */
254 alpha_elf_dynamic_symbol_p (h, info)
255 struct elf_link_hash_entry *h;
256 struct bfd_link_info *info;
261 while (h->root.type == bfd_link_hash_indirect
262 || h->root.type == bfd_link_hash_warning)
263 h = (struct elf_link_hash_entry *) h->root.u.i.link;
265 if (h->dynindx == -1)
268 if (h->root.type == bfd_link_hash_undefweak
269 || h->root.type == bfd_link_hash_defweak)
272 switch (ELF_ST_VISIBILITY (h->other))
280 if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
285 if ((info->shared && !info->symbolic)
286 || ((h->elf_link_hash_flags
287 & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))
288 == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)))
294 /* Create an entry in a Alpha ELF linker hash table. */
296 static struct bfd_hash_entry *
297 elf64_alpha_link_hash_newfunc (entry, table, string)
298 struct bfd_hash_entry *entry;
299 struct bfd_hash_table *table;
302 struct alpha_elf_link_hash_entry *ret =
303 (struct alpha_elf_link_hash_entry *) entry;
305 /* Allocate the structure if it has not already been allocated by a
307 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
308 ret = ((struct alpha_elf_link_hash_entry *)
309 bfd_hash_allocate (table,
310 sizeof (struct alpha_elf_link_hash_entry)));
311 if (ret == (struct alpha_elf_link_hash_entry *) NULL)
312 return (struct bfd_hash_entry *) ret;
314 /* Call the allocation method of the superclass. */
315 ret = ((struct alpha_elf_link_hash_entry *)
316 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
318 if (ret != (struct alpha_elf_link_hash_entry *) NULL)
320 /* Set local fields. */
321 memset (&ret->esym, 0, sizeof (EXTR));
322 /* We use -2 as a marker to indicate that the information has
323 not been set. -1 means there is no associated ifd. */
326 ret->got_entries = NULL;
327 ret->reloc_entries = NULL;
330 return (struct bfd_hash_entry *) ret;
333 /* Create a Alpha ELF linker hash table. */
335 static struct bfd_link_hash_table *
336 elf64_alpha_bfd_link_hash_table_create (abfd)
339 struct alpha_elf_link_hash_table *ret;
340 bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table);
342 ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt);
343 if (ret == (struct alpha_elf_link_hash_table *) NULL)
346 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
347 elf64_alpha_link_hash_newfunc))
353 return &ret->root.root;
356 /* We have some private fields hanging off of the elf_tdata structure. */
358 struct alpha_elf_obj_tdata
360 struct elf_obj_tdata root;
362 /* For every input file, these are the got entries for that object's
364 struct alpha_elf_got_entry ** local_got_entries;
366 /* For every input file, this is the object that owns the got that
367 this input file uses. */
370 /* For every got, this is a linked list through the objects using this got */
371 bfd *in_got_link_next;
373 /* For every got, this is a link to the next got subsegment. */
376 /* For every got, this is the section. */
379 /* For every got, this is it's total number of words. */
382 /* For every got, this is the sum of the number of words required
383 to hold all of the member object's local got. */
387 #define alpha_elf_tdata(abfd) \
388 ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any)
391 elf64_alpha_mkobject (abfd)
394 bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata);
395 abfd->tdata.any = bfd_zalloc (abfd, amt);
396 if (abfd->tdata.any == NULL)
402 elf64_alpha_object_p (abfd)
405 /* Allocate our special target data. */
406 struct alpha_elf_obj_tdata *new_tdata;
407 bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata);
408 new_tdata = bfd_zalloc (abfd, amt);
409 if (new_tdata == NULL)
411 new_tdata->root = *abfd->tdata.elf_obj_data;
412 abfd->tdata.any = new_tdata;
414 /* Set the right machine number for an Alpha ELF file. */
415 return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
418 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
419 from smaller values. Start with zero, widen, *then* decrement. */
420 #define MINUS_ONE (((bfd_vma)0) - 1)
422 #define SKIP_HOWTO(N) \
423 HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0)
425 static reloc_howto_type elf64_alpha_howto_table[] =
427 HOWTO (R_ALPHA_NONE, /* type */
429 0, /* size (0 = byte, 1 = short, 2 = long) */
431 true, /* pc_relative */
433 complain_overflow_dont, /* complain_on_overflow */
434 elf64_alpha_reloc_nil, /* special_function */
436 false, /* partial_inplace */
439 true), /* pcrel_offset */
441 /* A 32 bit reference to a symbol. */
442 HOWTO (R_ALPHA_REFLONG, /* type */
444 2, /* size (0 = byte, 1 = short, 2 = long) */
446 false, /* pc_relative */
448 complain_overflow_bitfield, /* complain_on_overflow */
449 0, /* special_function */
450 "REFLONG", /* name */
451 false, /* partial_inplace */
452 0xffffffff, /* src_mask */
453 0xffffffff, /* dst_mask */
454 false), /* pcrel_offset */
456 /* A 64 bit reference to a symbol. */
457 HOWTO (R_ALPHA_REFQUAD, /* type */
459 4, /* size (0 = byte, 1 = short, 2 = long) */
461 false, /* pc_relative */
463 complain_overflow_bitfield, /* complain_on_overflow */
464 0, /* special_function */
465 "REFQUAD", /* name */
466 false, /* partial_inplace */
467 MINUS_ONE, /* src_mask */
468 MINUS_ONE, /* dst_mask */
469 false), /* pcrel_offset */
471 /* A 32 bit GP relative offset. This is just like REFLONG except
472 that when the value is used the value of the gp register will be
474 HOWTO (R_ALPHA_GPREL32, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 false, /* pc_relative */
480 complain_overflow_bitfield, /* complain_on_overflow */
481 0, /* special_function */
482 "GPREL32", /* name */
483 false, /* partial_inplace */
484 0xffffffff, /* src_mask */
485 0xffffffff, /* dst_mask */
486 false), /* pcrel_offset */
488 /* Used for an instruction that refers to memory off the GP register. */
489 HOWTO (R_ALPHA_LITERAL, /* type */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
493 false, /* pc_relative */
495 complain_overflow_signed, /* complain_on_overflow */
496 0, /* special_function */
497 "ELF_LITERAL", /* name */
498 false, /* partial_inplace */
499 0xffff, /* src_mask */
500 0xffff, /* dst_mask */
501 false), /* pcrel_offset */
503 /* This reloc only appears immediately following an ELF_LITERAL reloc.
504 It identifies a use of the literal. The symbol index is special:
505 1 means the literal address is in the base register of a memory
506 format instruction; 2 means the literal address is in the byte
507 offset register of a byte-manipulation instruction; 3 means the
508 literal address is in the target register of a jsr instruction.
509 This does not actually do any relocation. */
510 HOWTO (R_ALPHA_LITUSE, /* type */
512 1, /* size (0 = byte, 1 = short, 2 = long) */
514 false, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 elf64_alpha_reloc_nil, /* special_function */
519 false, /* partial_inplace */
522 false), /* pcrel_offset */
524 /* Load the gp register. This is always used for a ldah instruction
525 which loads the upper 16 bits of the gp register. The symbol
526 index of the GPDISP instruction is an offset in bytes to the lda
527 instruction that loads the lower 16 bits. The value to use for
528 the relocation is the difference between the GP value and the
529 current location; the load will always be done against a register
530 holding the current address.
532 NOTE: Unlike ECOFF, partial in-place relocation is not done. If
533 any offset is present in the instructions, it is an offset from
534 the register to the ldah instruction. This lets us avoid any
535 stupid hackery like inventing a gp value to do partial relocation
536 against. Also unlike ECOFF, we do the whole relocation off of
537 the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd,
538 space consuming bit, that, since all the information was present
539 in the GPDISP_HI16 reloc. */
540 HOWTO (R_ALPHA_GPDISP, /* type */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
544 false, /* pc_relative */
546 complain_overflow_dont, /* complain_on_overflow */
547 elf64_alpha_reloc_gpdisp, /* special_function */
549 false, /* partial_inplace */
550 0xffff, /* src_mask */
551 0xffff, /* dst_mask */
552 true), /* pcrel_offset */
554 /* A 21 bit branch. */
555 HOWTO (R_ALPHA_BRADDR, /* type */
557 2, /* size (0 = byte, 1 = short, 2 = long) */
559 true, /* pc_relative */
561 complain_overflow_signed, /* complain_on_overflow */
562 0, /* special_function */
564 false, /* partial_inplace */
565 0x1fffff, /* src_mask */
566 0x1fffff, /* dst_mask */
567 true), /* pcrel_offset */
569 /* A hint for a jump to a register. */
570 HOWTO (R_ALPHA_HINT, /* type */
572 1, /* size (0 = byte, 1 = short, 2 = long) */
574 true, /* pc_relative */
576 complain_overflow_dont, /* complain_on_overflow */
577 0, /* special_function */
579 false, /* partial_inplace */
580 0x3fff, /* src_mask */
581 0x3fff, /* dst_mask */
582 true), /* pcrel_offset */
584 /* 16 bit PC relative offset. */
585 HOWTO (R_ALPHA_SREL16, /* type */
587 1, /* size (0 = byte, 1 = short, 2 = long) */
589 true, /* pc_relative */
591 complain_overflow_signed, /* complain_on_overflow */
592 0, /* special_function */
594 false, /* partial_inplace */
595 0xffff, /* src_mask */
596 0xffff, /* dst_mask */
597 true), /* pcrel_offset */
599 /* 32 bit PC relative offset. */
600 HOWTO (R_ALPHA_SREL32, /* type */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
604 true, /* pc_relative */
606 complain_overflow_signed, /* complain_on_overflow */
607 0, /* special_function */
609 false, /* partial_inplace */
610 0xffffffff, /* src_mask */
611 0xffffffff, /* dst_mask */
612 true), /* pcrel_offset */
614 /* A 64 bit PC relative offset. */
615 HOWTO (R_ALPHA_SREL64, /* type */
617 4, /* size (0 = byte, 1 = short, 2 = long) */
619 true, /* pc_relative */
621 complain_overflow_signed, /* complain_on_overflow */
622 0, /* special_function */
624 false, /* partial_inplace */
625 MINUS_ONE, /* src_mask */
626 MINUS_ONE, /* dst_mask */
627 true), /* pcrel_offset */
629 /* Skip 12 - 16; deprecated ECOFF relocs. */
636 /* The high 16 bits of the displacement from GP to the target. */
637 HOWTO (R_ALPHA_GPRELHIGH,
639 1, /* size (0 = byte, 1 = short, 2 = long) */
641 false, /* pc_relative */
643 complain_overflow_signed, /* complain_on_overflow */
644 0, /* special_function */
645 "GPRELHIGH", /* name */
646 false, /* partial_inplace */
647 0xffff, /* src_mask */
648 0xffff, /* dst_mask */
649 false), /* pcrel_offset */
651 /* The low 16 bits of the displacement from GP to the target. */
652 HOWTO (R_ALPHA_GPRELLOW,
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 false, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 0, /* special_function */
660 "GPRELLOW", /* name */
661 false, /* partial_inplace */
662 0xffff, /* src_mask */
663 0xffff, /* dst_mask */
664 false), /* pcrel_offset */
666 /* A 16-bit displacement from the GP to the target. */
667 HOWTO (R_ALPHA_GPREL16,
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 false, /* pc_relative */
673 complain_overflow_signed, /* complain_on_overflow */
674 0, /* special_function */
675 "GPREL16", /* name */
676 false, /* partial_inplace */
677 0xffff, /* src_mask */
678 0xffff, /* dst_mask */
679 false), /* pcrel_offset */
681 /* Skip 20 - 23; deprecated ECOFF relocs. */
687 /* Misc ELF relocations. */
689 /* A dynamic relocation to copy the target into our .dynbss section. */
690 /* Not generated, as all Alpha objects use PIC, so it is not needed. It
691 is present because every other ELF has one, but should not be used
692 because .dynbss is an ugly thing. */
699 complain_overflow_dont,
700 bfd_elf_generic_reloc,
707 /* A dynamic relocation for a .got entry. */
708 HOWTO (R_ALPHA_GLOB_DAT,
714 complain_overflow_dont,
715 bfd_elf_generic_reloc,
722 /* A dynamic relocation for a .plt entry. */
723 HOWTO (R_ALPHA_JMP_SLOT,
729 complain_overflow_dont,
730 bfd_elf_generic_reloc,
737 /* A dynamic relocation to add the base of the DSO to a 64-bit field. */
738 HOWTO (R_ALPHA_RELATIVE,
744 complain_overflow_dont,
745 bfd_elf_generic_reloc,
752 /* A 21 bit branch that adjusts for gp loads. */
753 HOWTO (R_ALPHA_BRSGP, /* type */
755 2, /* size (0 = byte, 1 = short, 2 = long) */
757 true, /* pc_relative */
759 complain_overflow_signed, /* complain_on_overflow */
760 0, /* special_function */
762 false, /* partial_inplace */
763 0x1fffff, /* src_mask */
764 0x1fffff, /* dst_mask */
765 true), /* pcrel_offset */
767 /* Creates a tls_index for the symbol in the got. */
768 HOWTO (R_ALPHA_TLSGD, /* type */
770 1, /* size (0 = byte, 1 = short, 2 = long) */
772 false, /* pc_relative */
774 complain_overflow_signed, /* complain_on_overflow */
775 0, /* special_function */
777 false, /* partial_inplace */
778 0xffff, /* src_mask */
779 0xffff, /* dst_mask */
780 false), /* pcrel_offset */
782 /* Creates a tls_index for the (current) module in the got. */
783 HOWTO (R_ALPHA_TLSLDM, /* type */
785 1, /* size (0 = byte, 1 = short, 2 = long) */
787 false, /* pc_relative */
789 complain_overflow_signed, /* complain_on_overflow */
790 0, /* special_function */
792 false, /* partial_inplace */
793 0xffff, /* src_mask */
794 0xffff, /* dst_mask */
795 false), /* pcrel_offset */
797 /* A dynamic relocation for a DTP module entry. */
798 HOWTO (R_ALPHA_DTPMOD64, /* type */
800 4, /* size (0 = byte, 1 = short, 2 = long) */
802 false, /* pc_relative */
804 complain_overflow_bitfield, /* complain_on_overflow */
805 0, /* special_function */
806 "DTPMOD64", /* name */
807 false, /* partial_inplace */
808 MINUS_ONE, /* src_mask */
809 MINUS_ONE, /* dst_mask */
810 false), /* pcrel_offset */
812 /* Creates a 64-bit offset in the got for the displacement
813 from DTP to the target. */
814 HOWTO (R_ALPHA_GOTDTPREL, /* type */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
818 false, /* pc_relative */
820 complain_overflow_signed, /* complain_on_overflow */
821 0, /* special_function */
822 "GOTDTPREL", /* name */
823 false, /* partial_inplace */
824 0xffff, /* src_mask */
825 0xffff, /* dst_mask */
826 false), /* pcrel_offset */
828 /* A dynamic relocation for a displacement from DTP to the target. */
829 HOWTO (R_ALPHA_DTPREL64, /* type */
831 4, /* size (0 = byte, 1 = short, 2 = long) */
833 false, /* pc_relative */
835 complain_overflow_bitfield, /* complain_on_overflow */
836 0, /* special_function */
837 "DTPREL64", /* name */
838 false, /* partial_inplace */
839 MINUS_ONE, /* src_mask */
840 MINUS_ONE, /* dst_mask */
841 false), /* pcrel_offset */
843 /* The high 16 bits of the displacement from DTP to the target. */
844 HOWTO (R_ALPHA_DTPRELHI, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 false, /* pc_relative */
850 complain_overflow_signed, /* complain_on_overflow */
851 0, /* special_function */
852 "DTPRELHI", /* name */
853 false, /* partial_inplace */
854 0xffff, /* src_mask */
855 0xffff, /* dst_mask */
856 false), /* pcrel_offset */
858 /* The low 16 bits of the displacement from DTP to the target. */
859 HOWTO (R_ALPHA_DTPRELLO, /* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 false, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 0, /* special_function */
867 "DTPRELLO", /* name */
868 false, /* partial_inplace */
869 0xffff, /* src_mask */
870 0xffff, /* dst_mask */
871 false), /* pcrel_offset */
873 /* A 16-bit displacement from DTP to the target. */
874 HOWTO (R_ALPHA_DTPREL16, /* type */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 false, /* pc_relative */
880 complain_overflow_signed, /* complain_on_overflow */
881 0, /* special_function */
882 "DTPREL16", /* name */
883 false, /* partial_inplace */
884 0xffff, /* src_mask */
885 0xffff, /* dst_mask */
886 false), /* pcrel_offset */
888 /* Creates a 64-bit offset in the got for the displacement
889 from TP to the target. */
890 HOWTO (R_ALPHA_GOTTPREL, /* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 false, /* pc_relative */
896 complain_overflow_signed, /* complain_on_overflow */
897 0, /* special_function */
898 "GOTTPREL", /* name */
899 false, /* partial_inplace */
900 0xffff, /* src_mask */
901 0xffff, /* dst_mask */
902 false), /* pcrel_offset */
904 /* A dynamic relocation for a displacement from TP to the target. */
905 HOWTO (R_ALPHA_TPREL64, /* type */
907 4, /* size (0 = byte, 1 = short, 2 = long) */
909 false, /* pc_relative */
911 complain_overflow_bitfield, /* complain_on_overflow */
912 0, /* special_function */
913 "TPREL64", /* name */
914 false, /* partial_inplace */
915 MINUS_ONE, /* src_mask */
916 MINUS_ONE, /* dst_mask */
917 false), /* pcrel_offset */
919 /* The high 16 bits of the displacement from TP to the target. */
920 HOWTO (R_ALPHA_TPRELHI, /* type */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
924 false, /* pc_relative */
926 complain_overflow_signed, /* complain_on_overflow */
927 0, /* special_function */
928 "TPRELHI", /* name */
929 false, /* partial_inplace */
930 0xffff, /* src_mask */
931 0xffff, /* dst_mask */
932 false), /* pcrel_offset */
934 /* The low 16 bits of the displacement from TP to the target. */
935 HOWTO (R_ALPHA_TPRELLO, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 false, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 0, /* special_function */
943 "TPRELLO", /* name */
944 false, /* partial_inplace */
945 0xffff, /* src_mask */
946 0xffff, /* dst_mask */
947 false), /* pcrel_offset */
949 /* A 16-bit displacement from TP to the target. */
950 HOWTO (R_ALPHA_TPREL16, /* type */
952 1, /* size (0 = byte, 1 = short, 2 = long) */
954 false, /* pc_relative */
956 complain_overflow_signed, /* complain_on_overflow */
957 0, /* special_function */
958 "TPREL16", /* name */
959 false, /* partial_inplace */
960 0xffff, /* src_mask */
961 0xffff, /* dst_mask */
962 false), /* pcrel_offset */
965 /* A relocation function which doesn't do anything. */
967 static bfd_reloc_status_type
968 elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message)
969 bfd *abfd ATTRIBUTE_UNUSED;
971 asymbol *sym ATTRIBUTE_UNUSED;
972 PTR data ATTRIBUTE_UNUSED;
975 char **error_message ATTRIBUTE_UNUSED;
978 reloc->address += sec->output_offset;
982 /* A relocation function used for an unsupported reloc. */
984 static bfd_reloc_status_type
985 elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message)
986 bfd *abfd ATTRIBUTE_UNUSED;
988 asymbol *sym ATTRIBUTE_UNUSED;
989 PTR data ATTRIBUTE_UNUSED;
992 char **error_message ATTRIBUTE_UNUSED;
995 reloc->address += sec->output_offset;
996 return bfd_reloc_notsupported;
999 /* Do the work of the GPDISP relocation. */
1001 static bfd_reloc_status_type
1002 elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda)
1008 bfd_reloc_status_type ret = bfd_reloc_ok;
1010 unsigned long i_ldah, i_lda;
1012 i_ldah = bfd_get_32 (abfd, p_ldah);
1013 i_lda = bfd_get_32 (abfd, p_lda);
1015 /* Complain if the instructions are not correct. */
1016 if (((i_ldah >> 26) & 0x3f) != 0x09
1017 || ((i_lda >> 26) & 0x3f) != 0x08)
1018 ret = bfd_reloc_dangerous;
1020 /* Extract the user-supplied offset, mirroring the sign extensions
1021 that the instructions perform. */
1022 addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff);
1023 addend = (addend ^ 0x80008000) - 0x80008000;
1027 if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000
1028 || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000)
1029 ret = bfd_reloc_overflow;
1031 /* compensate for the sign extension again. */
1032 i_ldah = ((i_ldah & 0xffff0000)
1033 | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff));
1034 i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff);
1036 bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah);
1037 bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda);
1042 /* The special function for the GPDISP reloc. */
1044 static bfd_reloc_status_type
1045 elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section,
1046 output_bfd, err_msg)
1048 arelent *reloc_entry;
1049 asymbol *sym ATTRIBUTE_UNUSED;
1051 asection *input_section;
1055 bfd_reloc_status_type ret;
1056 bfd_vma gp, relocation;
1057 bfd_byte *p_ldah, *p_lda;
1059 /* Don't do anything if we're not doing a final link. */
1062 reloc_entry->address += input_section->output_offset;
1063 return bfd_reloc_ok;
1066 if (reloc_entry->address > input_section->_cooked_size ||
1067 reloc_entry->address + reloc_entry->addend > input_section->_cooked_size)
1068 return bfd_reloc_outofrange;
1070 /* The gp used in the portion of the output object to which this
1071 input object belongs is cached on the input bfd. */
1072 gp = _bfd_get_gp_value (abfd);
1074 relocation = (input_section->output_section->vma
1075 + input_section->output_offset
1076 + reloc_entry->address);
1078 p_ldah = (bfd_byte *) data + reloc_entry->address;
1079 p_lda = p_ldah + reloc_entry->addend;
1081 ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda);
1083 /* Complain if the instructions are not correct. */
1084 if (ret == bfd_reloc_dangerous)
1085 *err_msg = _("GPDISP relocation did not find ldah and lda instructions");
1090 /* A mapping from BFD reloc types to Alpha ELF reloc types. */
1092 struct elf_reloc_map
1094 bfd_reloc_code_real_type bfd_reloc_val;
1098 static const struct elf_reloc_map elf64_alpha_reloc_map[] =
1100 {BFD_RELOC_NONE, R_ALPHA_NONE},
1101 {BFD_RELOC_32, R_ALPHA_REFLONG},
1102 {BFD_RELOC_64, R_ALPHA_REFQUAD},
1103 {BFD_RELOC_CTOR, R_ALPHA_REFQUAD},
1104 {BFD_RELOC_GPREL32, R_ALPHA_GPREL32},
1105 {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL},
1106 {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE},
1107 {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP},
1108 {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR},
1109 {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT},
1110 {BFD_RELOC_16_PCREL, R_ALPHA_SREL16},
1111 {BFD_RELOC_32_PCREL, R_ALPHA_SREL32},
1112 {BFD_RELOC_64_PCREL, R_ALPHA_SREL64},
1113 {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH},
1114 {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW},
1115 {BFD_RELOC_GPREL16, R_ALPHA_GPREL16},
1116 {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP},
1117 {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD},
1118 {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM},
1119 {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64},
1120 {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL},
1121 {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64},
1122 {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI},
1123 {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO},
1124 {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16},
1125 {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL},
1126 {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64},
1127 {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI},
1128 {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO},
1129 {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16},
1132 /* Given a BFD reloc type, return a HOWTO structure. */
1134 static reloc_howto_type *
1135 elf64_alpha_bfd_reloc_type_lookup (abfd, code)
1136 bfd *abfd ATTRIBUTE_UNUSED;
1137 bfd_reloc_code_real_type code;
1139 const struct elf_reloc_map *i, *e;
1140 i = e = elf64_alpha_reloc_map;
1141 e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map);
1144 if (i->bfd_reloc_val == code)
1145 return &elf64_alpha_howto_table[i->elf_reloc_val];
1150 /* Given an Alpha ELF reloc type, fill in an arelent structure. */
1153 elf64_alpha_info_to_howto (abfd, cache_ptr, dst)
1154 bfd *abfd ATTRIBUTE_UNUSED;
1156 Elf64_Internal_Rela *dst;
1160 r_type = ELF64_R_TYPE(dst->r_info);
1161 BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max);
1162 cache_ptr->howto = &elf64_alpha_howto_table[r_type];
1165 /* These two relocations create a two-word entry in the got. */
1166 #define alpha_got_entry_size(r_type) \
1167 (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8)
1169 /* These functions do relaxation for Alpha ELF.
1171 Currently I'm only handling what I can do with existing compiler
1172 and assembler support, which means no instructions are removed,
1173 though some may be nopped. At this time GCC does not emit enough
1174 information to do all of the relaxing that is possible. It will
1175 take some not small amount of work for that to happen.
1177 There are a couple of interesting papers that I once read on this
1178 subject, that I cannot find references to at the moment, that
1179 related to Alpha in particular. They are by David Wall, then of
1183 #define OP_LDAH 0x09
1184 #define INSN_JSR 0x68004000
1185 #define INSN_JSR_MASK 0xfc00c000
1189 #define INSN_UNOP 0x2ffe0000
1191 struct alpha_relax_info
1196 Elf_Internal_Rela *relocs, *relend;
1197 struct bfd_link_info *link_info;
1198 boolean changed_contents;
1199 boolean changed_relocs;
1203 struct alpha_elf_link_hash_entry *h;
1204 struct alpha_elf_got_entry *gotent;
1205 unsigned char other;
1208 static Elf_Internal_Rela * elf64_alpha_relax_with_lituse
1209 PARAMS((struct alpha_relax_info *info, bfd_vma symval,
1210 Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend));
1212 static boolean elf64_alpha_relax_without_lituse
1213 PARAMS((struct alpha_relax_info *info, bfd_vma symval,
1214 Elf_Internal_Rela *irel));
1216 static bfd_vma elf64_alpha_relax_opt_call
1217 PARAMS((struct alpha_relax_info *info, bfd_vma symval));
1219 static boolean elf64_alpha_relax_section
1220 PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
1223 static Elf_Internal_Rela *
1224 elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type)
1225 Elf_Internal_Rela *rel, *relend;
1229 while (rel < relend)
1231 if (rel->r_offset == offset
1232 && ELF64_R_TYPE (rel->r_info) == (unsigned int) type)
1239 static Elf_Internal_Rela *
1240 elf64_alpha_relax_with_lituse (info, symval, irel, irelend)
1241 struct alpha_relax_info *info;
1243 Elf_Internal_Rela *irel, *irelend;
1245 Elf_Internal_Rela *urel;
1246 int flags, count, i;
1247 bfd_signed_vma disp;
1250 boolean lit_reused = false;
1251 boolean all_optimized = true;
1252 unsigned int lit_insn;
1254 lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
1255 if (lit_insn >> 26 != OP_LDQ)
1257 ((*_bfd_error_handler)
1258 ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn",
1259 bfd_archive_filename (info->abfd), info->sec->name,
1260 (unsigned long) irel->r_offset));
1264 /* Summarize how this particular LITERAL is used. */
1265 for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count)
1267 if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE)
1269 if (urel->r_addend <= 3)
1270 flags |= 1 << urel->r_addend;
1273 /* A little preparation for the loop... */
1274 disp = symval - info->gp;
1276 for (urel = irel+1, i = 0; i < count; ++i, ++urel)
1280 bfd_signed_vma xdisp;
1282 insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset);
1284 switch (urel->r_addend)
1286 default: /* 0 = ADDRESS FORMAT */
1287 /* This type is really just a placeholder to note that all
1288 uses cannot be optimized, but to still allow some. */
1289 all_optimized = false;
1292 case 1: /* MEM FORMAT */
1293 /* We can always optimize 16-bit displacements. */
1295 /* Extract the displacement from the instruction, sign-extending
1296 it if necessary, then test whether it is within 16 or 32 bits
1297 displacement from GP. */
1298 insn_disp = insn & 0x0000ffff;
1299 if (insn_disp & 0x00008000)
1300 insn_disp |= 0xffff0000; /* Negative: sign-extend. */
1302 xdisp = disp + insn_disp;
1303 fits16 = (xdisp >= - (bfd_signed_vma) 0x00008000 && xdisp < 0x00008000);
1304 fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 && xdisp < 0x7fff8000);
1308 /* Take the op code and dest from this insn, take the base
1309 register from the literal insn. Leave the offset alone. */
1310 insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000);
1311 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1313 urel->r_addend = irel->r_addend;
1314 info->changed_relocs = true;
1316 bfd_put_32 (info->abfd, (bfd_vma) insn,
1317 info->contents + urel->r_offset);
1318 info->changed_contents = true;
1321 /* If all mem+byte, we can optimize 32-bit mem displacements. */
1322 else if (fits32 && !(flags & ~6))
1324 /* FIXME: sanity check that lit insn Ra is mem insn Rb. */
1326 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1328 lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000);
1329 bfd_put_32 (info->abfd, (bfd_vma) lit_insn,
1330 info->contents + irel->r_offset);
1332 info->changed_contents = true;
1334 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1336 urel->r_addend = irel->r_addend;
1337 info->changed_relocs = true;
1340 all_optimized = false;
1343 case 2: /* BYTE OFFSET FORMAT */
1344 /* We can always optimize byte instructions. */
1346 /* FIXME: sanity check the insn for byte op. Check that the
1347 literal dest reg is indeed Rb in the byte insn. */
1349 insn &= ~ (unsigned) 0x001ff000;
1350 insn |= ((symval & 7) << 13) | 0x1000;
1352 urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1354 info->changed_relocs = true;
1356 bfd_put_32 (info->abfd, (bfd_vma) insn,
1357 info->contents + urel->r_offset);
1358 info->changed_contents = true;
1361 case 3: /* CALL FORMAT */
1363 /* If not zero, place to jump without needing pv. */
1364 bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval);
1365 bfd_vma org = (info->sec->output_section->vma
1366 + info->sec->output_offset
1367 + urel->r_offset + 4);
1368 bfd_signed_vma odisp;
1370 odisp = (optdest ? optdest : symval) - org;
1371 if (odisp >= -0x400000 && odisp < 0x400000)
1373 Elf_Internal_Rela *xrel;
1375 /* Preserve branch prediction call stack when possible. */
1376 if ((insn & INSN_JSR_MASK) == INSN_JSR)
1377 insn = (OP_BSR << 26) | (insn & 0x03e00000);
1379 insn = (OP_BR << 26) | (insn & 0x03e00000);
1381 urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
1383 urel->r_addend = irel->r_addend;
1386 urel->r_addend += optdest - symval;
1388 all_optimized = false;
1390 bfd_put_32 (info->abfd, (bfd_vma) insn,
1391 info->contents + urel->r_offset);
1393 /* Kill any HINT reloc that might exist for this insn. */
1394 xrel = (elf64_alpha_find_reloc_at_ofs
1395 (info->relocs, info->relend, urel->r_offset,
1398 xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1400 info->changed_contents = true;
1401 info->changed_relocs = true;
1404 all_optimized = false;
1406 /* Even if the target is not in range for a direct branch,
1407 if we share a GP, we can eliminate the gp reload. */
1410 Elf_Internal_Rela *gpdisp
1411 = (elf64_alpha_find_reloc_at_ofs
1412 (irel, irelend, urel->r_offset + 4, R_ALPHA_GPDISP));
1415 bfd_byte *p_ldah = info->contents + gpdisp->r_offset;
1416 bfd_byte *p_lda = p_ldah + gpdisp->r_addend;
1417 unsigned int ldah = bfd_get_32 (info->abfd, p_ldah);
1418 unsigned int lda = bfd_get_32 (info->abfd, p_lda);
1420 /* Verify that the instruction is "ldah $29,0($26)".
1421 Consider a function that ends in a noreturn call,
1422 and that the next function begins with an ldgp,
1423 and that by accident there is no padding between.
1424 In that case the insn would use $27 as the base. */
1425 if (ldah == 0x27ba0000 && lda == 0x23bd0000)
1427 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah);
1428 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda);
1430 gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1431 info->changed_contents = true;
1432 info->changed_relocs = true;
1441 /* If all cases were optimized, we can reduce the use count on this
1442 got entry by one, possibly eliminating it. */
1445 if (--info->gotent->use_count == 0)
1447 int sz = alpha_got_entry_size (info->gotent->reloc_type);
1448 alpha_elf_tdata (info->gotent->gotobj)->total_got_size -= sz;
1450 alpha_elf_tdata (info->gotent->gotobj)->local_got_size -= sz;
1453 /* If the literal instruction is no longer needed (it may have been
1454 reused. We can eliminate it. */
1455 /* ??? For now, I don't want to deal with compacting the section,
1456 so just nop it out. */
1459 irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE);
1460 info->changed_relocs = true;
1462 bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP,
1463 info->contents + irel->r_offset);
1464 info->changed_contents = true;
1468 return irel + count;
1472 elf64_alpha_relax_opt_call (info, symval)
1473 struct alpha_relax_info *info;
1476 /* If the function has the same gp, and we can identify that the
1477 function does not use its function pointer, we can eliminate the
1480 /* If the symbol is marked NOPV, we are being told the function never
1481 needs its procedure value. */
1482 if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV)
1485 /* If the symbol is marked STD_GP, we are being told the function does
1486 a normal ldgp in the first two words. */
1487 else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD)
1490 /* Otherwise, we may be able to identify a GP load in the first two
1491 words, which we can then skip. */
1494 Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp;
1497 /* Load the relocations from the section that the target symbol is in. */
1498 if (info->sec == info->tsec)
1500 tsec_relocs = info->relocs;
1501 tsec_relend = info->relend;
1506 tsec_relocs = (_bfd_elf64_link_read_relocs
1507 (info->abfd, info->tsec, (PTR) NULL,
1508 (Elf_Internal_Rela *) NULL,
1509 info->link_info->keep_memory));
1510 if (tsec_relocs == NULL)
1512 tsec_relend = tsec_relocs + info->tsec->reloc_count;
1513 tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs);
1516 /* Recover the symbol's offset within the section. */
1517 ofs = (symval - info->tsec->output_section->vma
1518 - info->tsec->output_offset);
1520 /* Look for a GPDISP reloc. */
1521 gpdisp = (elf64_alpha_find_reloc_at_ofs
1522 (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP));
1524 if (!gpdisp || gpdisp->r_addend != 4)
1534 /* We've now determined that we can skip an initial gp load. Verify
1535 that the call and the target use the same gp. */
1536 if (info->link_info->hash->creator != info->tsec->owner->xvec
1537 || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj)
1544 elf64_alpha_relax_without_lituse (info, symval, irel)
1545 struct alpha_relax_info *info;
1547 Elf_Internal_Rela *irel;
1550 bfd_signed_vma disp;
1552 /* Get the instruction. */
1553 insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset);
1555 if (insn >> 26 != OP_LDQ)
1557 ((*_bfd_error_handler)
1558 ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn",
1559 bfd_archive_filename (info->abfd), info->sec->name,
1560 (unsigned long) irel->r_offset));
1564 /* So we aren't told much. Do what we can with the address load and
1565 fake the rest. All of the optimizations here require that the
1566 offset from the GP fit in 16 bits. */
1568 disp = symval - info->gp;
1569 if (disp < -0x8000 || disp >= 0x8000)
1572 /* On the LITERAL instruction itself, consider exchanging
1573 `ldq R,X(gp)' for `lda R,Y(gp)'. */
1575 insn = (OP_LDA << 26) | (insn & 0x03ff0000);
1576 bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset);
1577 info->changed_contents = true;
1579 irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPREL16);
1580 info->changed_relocs = true;
1582 /* Reduce the use count on this got entry by one, possibly
1584 if (--info->gotent->use_count == 0)
1586 int sz = alpha_got_entry_size (info->gotent->reloc_type);
1587 alpha_elf_tdata (info->gotent->gotobj)->total_got_size -= sz;
1589 alpha_elf_tdata (info->gotent->gotobj)->local_got_size -= sz;
1592 /* ??? Search forward through this basic block looking for insns
1593 that use the target register. Stop after an insn modifying the
1594 register is seen, or after a branch or call.
1596 Any such memory load insn may be substituted by a load directly
1597 off the GP. This allows the memory load insn to be issued before
1598 the calculated GP register would otherwise be ready.
1600 Any such jsr insn can be replaced by a bsr if it is in range.
1602 This would mean that we'd have to _add_ relocations, the pain of
1603 which gives one pause. */
1609 elf64_alpha_relax_section (abfd, sec, link_info, again)
1612 struct bfd_link_info *link_info;
1615 Elf_Internal_Shdr *symtab_hdr;
1616 Elf_Internal_Shdr *shndx_hdr;
1617 Elf_Internal_Rela *internal_relocs;
1618 Elf_Internal_Rela *free_relocs = NULL;
1619 Elf_Internal_Rela *irel, *irelend;
1620 bfd_byte *free_contents = NULL;
1621 Elf64_External_Sym *extsyms = NULL;
1622 Elf64_External_Sym *free_extsyms = NULL;
1623 Elf_External_Sym_Shndx *shndx_buf = NULL;
1624 struct alpha_elf_got_entry **local_got_entries;
1625 struct alpha_relax_info info;
1627 /* We are not currently changing any sizes, so only one pass. */
1630 if (link_info->relocateable
1631 || (sec->flags & SEC_RELOC) == 0
1632 || sec->reloc_count == 0)
1635 /* If this is the first time we have been called for this section,
1636 initialize the cooked size. */
1637 if (sec->_cooked_size == 0)
1638 sec->_cooked_size = sec->_raw_size;
1640 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1641 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
1643 /* Load the relocations for this section. */
1644 internal_relocs = (_bfd_elf64_link_read_relocs
1645 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1646 link_info->keep_memory));
1647 if (internal_relocs == NULL)
1649 if (! link_info->keep_memory)
1650 free_relocs = internal_relocs;
1652 memset(&info, 0, sizeof (info));
1655 info.link_info = link_info;
1656 info.relocs = internal_relocs;
1657 info.relend = irelend = internal_relocs + sec->reloc_count;
1659 /* Find the GP for this object. */
1660 info.gotobj = alpha_elf_tdata (abfd)->gotobj;
1663 asection *sgot = alpha_elf_tdata (info.gotobj)->got;
1664 info.gp = _bfd_get_gp_value (info.gotobj);
1667 info.gp = (sgot->output_section->vma
1668 + sgot->output_offset
1670 _bfd_set_gp_value (info.gotobj, info.gp);
1674 for (irel = internal_relocs; irel < irelend; irel++)
1677 Elf_Internal_Sym isym;
1678 struct alpha_elf_got_entry *gotent;
1680 if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL)
1683 /* Get the section contents. */
1684 if (info.contents == NULL)
1686 if (elf_section_data (sec)->this_hdr.contents != NULL)
1687 info.contents = elf_section_data (sec)->this_hdr.contents;
1690 info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
1691 if (info.contents == NULL)
1693 free_contents = info.contents;
1695 if (! bfd_get_section_contents (abfd, sec, info.contents,
1696 (file_ptr) 0, sec->_raw_size))
1701 /* Read this BFD's symbols if we haven't done so already. */
1702 if (extsyms == NULL)
1706 if (symtab_hdr->contents != NULL)
1707 extsyms = (Elf64_External_Sym *) symtab_hdr->contents;
1710 amt = symtab_hdr->sh_info;
1711 amt *= sizeof (Elf64_External_Sym);
1712 extsyms = (Elf64_External_Sym *) bfd_malloc (amt);
1713 if (extsyms == NULL)
1715 free_extsyms = extsyms;
1716 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
1717 || bfd_bread ((PTR) extsyms, amt, abfd) != amt)
1721 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
1722 if (shndx_hdr->sh_size != 0)
1724 amt = symtab_hdr->sh_info;
1725 amt *= sizeof (Elf_External_Sym_Shndx);
1726 shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
1727 if (shndx_buf == NULL)
1729 if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
1730 || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
1735 /* Get the value of the symbol referred to by the reloc. */
1736 if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1738 /* A local symbol. */
1739 Elf64_External_Sym *esym;
1740 Elf_External_Sym_Shndx *shndx;
1742 esym = extsyms + ELF64_R_SYM (irel->r_info);
1743 shndx = shndx_buf + (shndx_buf ? ELF64_R_SYM (irel->r_info) : 0);
1744 bfd_elf64_swap_symbol_in (abfd, esym, shndx, &isym);
1745 if (isym.st_shndx == SHN_UNDEF)
1746 info.tsec = bfd_und_section_ptr;
1747 else if (isym.st_shndx == SHN_ABS)
1748 info.tsec = bfd_abs_section_ptr;
1749 else if (isym.st_shndx == SHN_COMMON)
1750 info.tsec = bfd_com_section_ptr;
1752 info.tsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
1755 info.other = isym.st_other;
1756 gotent = local_got_entries[ELF64_R_SYM(irel->r_info)];
1757 symval = isym.st_value;
1762 struct alpha_elf_link_hash_entry *h;
1764 indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1765 h = alpha_elf_sym_hashes (abfd)[indx];
1766 BFD_ASSERT (h != NULL);
1768 while (h->root.root.type == bfd_link_hash_indirect
1769 || h->root.root.type == bfd_link_hash_warning)
1770 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
1772 /* We can't do anthing with undefined or dynamic symbols. */
1773 if (h->root.root.type == bfd_link_hash_undefined
1774 || h->root.root.type == bfd_link_hash_undefweak
1775 || alpha_elf_dynamic_symbol_p (&h->root, link_info))
1779 info.tsec = h->root.root.u.def.section;
1780 info.other = h->root.other;
1781 gotent = h->got_entries;
1782 symval = h->root.root.u.def.value;
1785 /* Search for the got entry to be used by this relocation. */
1786 while (gotent->gotobj != info.gotobj || gotent->addend != irel->r_addend)
1787 gotent = gotent->next;
1788 info.gotent = gotent;
1790 symval += info.tsec->output_section->vma + info.tsec->output_offset;
1791 symval += irel->r_addend;
1793 BFD_ASSERT(info.gotent != NULL);
1795 /* If there exist LITUSE relocations immediately following, this
1796 opens up all sorts of interesting optimizations, because we
1797 now know every location that this address load is used. */
1799 if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE)
1801 irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend);
1807 if (!elf64_alpha_relax_without_lituse (&info, symval, irel))
1812 if (!elf64_alpha_size_got_sections (abfd, link_info))
1815 if (info.changed_relocs)
1817 elf_section_data (sec)->relocs = internal_relocs;
1819 else if (free_relocs != NULL)
1824 if (info.changed_contents)
1826 elf_section_data (sec)->this_hdr.contents = info.contents;
1828 else if (free_contents != NULL)
1830 if (! link_info->keep_memory)
1831 free (free_contents);
1834 /* Cache the section contents for elf_link_input_bfd. */
1835 elf_section_data (sec)->this_hdr.contents = info.contents;
1839 if (shndx_buf != NULL)
1842 if (free_extsyms != NULL)
1844 if (! link_info->keep_memory)
1845 free (free_extsyms);
1848 /* Cache the symbols for elf_link_input_bfd. */
1849 symtab_hdr->contents = (unsigned char *) extsyms;
1853 *again = info.changed_contents || info.changed_relocs;
1858 if (free_relocs != NULL)
1860 if (free_contents != NULL)
1861 free (free_contents);
1862 if (shndx_buf != NULL)
1864 if (free_extsyms != NULL)
1865 free (free_extsyms);
1870 #define PLT_HEADER_SIZE 32
1871 #define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */
1872 #define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */
1873 #define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */
1874 #define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */
1876 #define PLT_ENTRY_SIZE 12
1877 #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */
1878 #define PLT_ENTRY_WORD2 0
1879 #define PLT_ENTRY_WORD3 0
1881 #define MAX_GOT_SIZE (64*1024)
1883 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so"
1885 /* Handle an Alpha specific section when reading an object file. This
1886 is called when elfcode.h finds a section with an unknown type.
1887 FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure
1891 elf64_alpha_section_from_shdr (abfd, hdr, name)
1893 Elf64_Internal_Shdr *hdr;
1898 /* There ought to be a place to keep ELF backend specific flags, but
1899 at the moment there isn't one. We just keep track of the
1900 sections by their name, instead. Fortunately, the ABI gives
1901 suggested names for all the MIPS specific sections, so we will
1902 probably get away with this. */
1903 switch (hdr->sh_type)
1905 case SHT_ALPHA_DEBUG:
1906 if (strcmp (name, ".mdebug") != 0)
1913 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1915 newsect = hdr->bfd_section;
1917 if (hdr->sh_type == SHT_ALPHA_DEBUG)
1919 if (! bfd_set_section_flags (abfd, newsect,
1920 (bfd_get_section_flags (abfd, newsect)
1928 /* Convert Alpha specific section flags to bfd internal section flags. */
1931 elf64_alpha_section_flags (flags, hdr)
1933 Elf64_Internal_Shdr *hdr;
1935 if (hdr->sh_flags & SHF_ALPHA_GPREL)
1936 *flags |= SEC_SMALL_DATA;
1941 /* Set the correct type for an Alpha ELF section. We do this by the
1942 section name, which is a hack, but ought to work. */
1945 elf64_alpha_fake_sections (abfd, hdr, sec)
1947 Elf64_Internal_Shdr *hdr;
1950 register const char *name;
1952 name = bfd_get_section_name (abfd, sec);
1954 if (strcmp (name, ".mdebug") == 0)
1956 hdr->sh_type = SHT_ALPHA_DEBUG;
1957 /* In a shared object on Irix 5.3, the .mdebug section has an
1958 entsize of 0. FIXME: Does this matter? */
1959 if ((abfd->flags & DYNAMIC) != 0 )
1960 hdr->sh_entsize = 0;
1962 hdr->sh_entsize = 1;
1964 else if ((sec->flags & SEC_SMALL_DATA)
1965 || strcmp (name, ".sdata") == 0
1966 || strcmp (name, ".sbss") == 0
1967 || strcmp (name, ".lit4") == 0
1968 || strcmp (name, ".lit8") == 0)
1969 hdr->sh_flags |= SHF_ALPHA_GPREL;
1974 /* Hook called by the linker routine which adds symbols from an object
1975 file. We use it to put .comm items in .sbss, and not .bss. */
1978 elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1980 struct bfd_link_info *info;
1981 const Elf_Internal_Sym *sym;
1982 const char **namep ATTRIBUTE_UNUSED;
1983 flagword *flagsp ATTRIBUTE_UNUSED;
1987 if (sym->st_shndx == SHN_COMMON
1988 && !info->relocateable
1989 && sym->st_size <= elf_gp_size (abfd))
1991 /* Common symbols less than or equal to -G nn bytes are
1992 automatically put into .sbss. */
1994 asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
1998 scomm = bfd_make_section (abfd, ".scommon");
2000 || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
2002 | SEC_LINKER_CREATED)))
2007 *valp = sym->st_size;
2013 /* Create the .got section. */
2016 elf64_alpha_create_got_section(abfd, info)
2018 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2022 if (bfd_get_section_by_name (abfd, ".got"))
2025 s = bfd_make_section (abfd, ".got");
2027 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
2030 | SEC_LINKER_CREATED))
2031 || !bfd_set_section_alignment (abfd, s, 3))
2034 alpha_elf_tdata (abfd)->got = s;
2039 /* Create all the dynamic sections. */
2042 elf64_alpha_create_dynamic_sections (abfd, info)
2044 struct bfd_link_info *info;
2047 struct elf_link_hash_entry *h;
2049 /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */
2051 s = bfd_make_section (abfd, ".plt");
2053 || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
2056 | SEC_LINKER_CREATED
2058 || ! bfd_set_section_alignment (abfd, s, 3))
2061 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2064 if (! (_bfd_generic_link_add_one_symbol
2065 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2066 (bfd_vma) 0, (const char *) NULL, false,
2067 get_elf_backend_data (abfd)->collect,
2068 (struct bfd_link_hash_entry **) &h)))
2070 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2071 h->type = STT_OBJECT;
2074 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
2077 s = bfd_make_section (abfd, ".rela.plt");
2079 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
2082 | SEC_LINKER_CREATED
2084 || ! bfd_set_section_alignment (abfd, s, 3))
2087 /* We may or may not have created a .got section for this object, but
2088 we definitely havn't done the rest of the work. */
2090 if (!elf64_alpha_create_got_section (abfd, info))
2093 s = bfd_make_section(abfd, ".rela.got");
2095 || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
2098 | SEC_LINKER_CREATED
2100 || !bfd_set_section_alignment (abfd, s, 3))
2103 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
2104 dynobj's .got section. We don't do this in the linker script
2105 because we don't want to define the symbol if we are not creating
2106 a global offset table. */
2108 if (!(_bfd_generic_link_add_one_symbol
2109 (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL,
2110 alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL,
2111 false, get_elf_backend_data (abfd)->collect,
2112 (struct bfd_link_hash_entry **) &h)))
2114 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2115 h->type = STT_OBJECT;
2118 && ! _bfd_elf_link_record_dynamic_symbol (info, h))
2121 elf_hash_table (info)->hgot = h;
2126 /* Read ECOFF debugging information from a .mdebug section into a
2127 ecoff_debug_info structure. */
2130 elf64_alpha_read_ecoff_info (abfd, section, debug)
2133 struct ecoff_debug_info *debug;
2136 const struct ecoff_debug_swap *swap;
2137 char *ext_hdr = NULL;
2139 swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
2140 memset (debug, 0, sizeof (*debug));
2142 ext_hdr = (char *) bfd_malloc (swap->external_hdr_size);
2143 if (ext_hdr == NULL && swap->external_hdr_size != 0)
2146 if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0,
2147 swap->external_hdr_size)
2151 symhdr = &debug->symbolic_header;
2152 (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr);
2154 /* The symbolic header contains absolute file offsets and sizes to
2156 #define READ(ptr, offset, count, size, type) \
2157 if (symhdr->count == 0) \
2158 debug->ptr = NULL; \
2161 bfd_size_type amt = (bfd_size_type) size * symhdr->count; \
2162 debug->ptr = (type) bfd_malloc (amt); \
2163 if (debug->ptr == NULL) \
2164 goto error_return; \
2165 if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \
2166 || bfd_bread (debug->ptr, amt, abfd) != amt) \
2167 goto error_return; \
2170 READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *);
2171 READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR);
2172 READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR);
2173 READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR);
2174 READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR);
2175 READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext),
2177 READ (ss, cbSsOffset, issMax, sizeof (char), char *);
2178 READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *);
2179 READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR);
2180 READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR);
2181 READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR);
2185 debug->adjust = NULL;
2190 if (ext_hdr != NULL)
2192 if (debug->line != NULL)
2194 if (debug->external_dnr != NULL)
2195 free (debug->external_dnr);
2196 if (debug->external_pdr != NULL)
2197 free (debug->external_pdr);
2198 if (debug->external_sym != NULL)
2199 free (debug->external_sym);
2200 if (debug->external_opt != NULL)
2201 free (debug->external_opt);
2202 if (debug->external_aux != NULL)
2203 free (debug->external_aux);
2204 if (debug->ss != NULL)
2206 if (debug->ssext != NULL)
2207 free (debug->ssext);
2208 if (debug->external_fdr != NULL)
2209 free (debug->external_fdr);
2210 if (debug->external_rfd != NULL)
2211 free (debug->external_rfd);
2212 if (debug->external_ext != NULL)
2213 free (debug->external_ext);
2217 /* Alpha ELF local labels start with '$'. */
2220 elf64_alpha_is_local_label_name (abfd, name)
2221 bfd *abfd ATTRIBUTE_UNUSED;
2224 return name[0] == '$';
2227 /* Alpha ELF follows MIPS ELF in using a special find_nearest_line
2228 routine in order to handle the ECOFF debugging information. We
2229 still call this mips_elf_find_line because of the slot
2230 find_line_info in elf_obj_tdata is declared that way. */
2232 struct mips_elf_find_line
2234 struct ecoff_debug_info d;
2235 struct ecoff_find_line i;
2239 elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr,
2240 functionname_ptr, line_ptr)
2245 const char **filename_ptr;
2246 const char **functionname_ptr;
2247 unsigned int *line_ptr;
2251 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
2252 filename_ptr, functionname_ptr,
2254 &elf_tdata (abfd)->dwarf2_find_line_info))
2257 msec = bfd_get_section_by_name (abfd, ".mdebug");
2261 struct mips_elf_find_line *fi;
2262 const struct ecoff_debug_swap * const swap =
2263 get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
2265 /* If we are called during a link, alpha_elf_final_link may have
2266 cleared the SEC_HAS_CONTENTS field. We force it back on here
2267 if appropriate (which it normally will be). */
2268 origflags = msec->flags;
2269 if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
2270 msec->flags |= SEC_HAS_CONTENTS;
2272 fi = elf_tdata (abfd)->find_line_info;
2275 bfd_size_type external_fdr_size;
2278 struct fdr *fdr_ptr;
2279 bfd_size_type amt = sizeof (struct mips_elf_find_line);
2281 fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt);
2284 msec->flags = origflags;
2288 if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d))
2290 msec->flags = origflags;
2294 /* Swap in the FDR information. */
2295 amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr);
2296 fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt);
2297 if (fi->d.fdr == NULL)
2299 msec->flags = origflags;
2302 external_fdr_size = swap->external_fdr_size;
2303 fdr_ptr = fi->d.fdr;
2304 fraw_src = (char *) fi->d.external_fdr;
2305 fraw_end = (fraw_src
2306 + fi->d.symbolic_header.ifdMax * external_fdr_size);
2307 for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
2308 (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
2310 elf_tdata (abfd)->find_line_info = fi;
2312 /* Note that we don't bother to ever free this information.
2313 find_nearest_line is either called all the time, as in
2314 objdump -l, so the information should be saved, or it is
2315 rarely called, as in ld error messages, so the memory
2316 wasted is unimportant. Still, it would probably be a
2317 good idea for free_cached_info to throw it away. */
2320 if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap,
2321 &fi->i, filename_ptr, functionname_ptr,
2324 msec->flags = origflags;
2328 msec->flags = origflags;
2331 /* Fall back on the generic ELF find_nearest_line routine. */
2333 return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
2334 filename_ptr, functionname_ptr,
2338 /* Structure used to pass information to alpha_elf_output_extsym. */
2343 struct bfd_link_info *info;
2344 struct ecoff_debug_info *debug;
2345 const struct ecoff_debug_swap *swap;
2350 elf64_alpha_output_extsym (h, data)
2351 struct alpha_elf_link_hash_entry *h;
2354 struct extsym_info *einfo = (struct extsym_info *) data;
2356 asection *sec, *output_section;
2358 if (h->root.root.type == bfd_link_hash_warning)
2359 h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
2361 if (h->root.indx == -2)
2363 else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2364 || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
2365 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
2366 && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
2368 else if (einfo->info->strip == strip_all
2369 || (einfo->info->strip == strip_some
2370 && bfd_hash_lookup (einfo->info->keep_hash,
2371 h->root.root.root.string,
2372 false, false) == NULL))
2380 if (h->esym.ifd == -2)
2383 h->esym.cobol_main = 0;
2384 h->esym.weakext = 0;
2385 h->esym.reserved = 0;
2386 h->esym.ifd = ifdNil;
2387 h->esym.asym.value = 0;
2388 h->esym.asym.st = stGlobal;
2390 if (h->root.root.type != bfd_link_hash_defined
2391 && h->root.root.type != bfd_link_hash_defweak)
2392 h->esym.asym.sc = scAbs;
2397 sec = h->root.root.u.def.section;
2398 output_section = sec->output_section;
2400 /* When making a shared library and symbol h is the one from
2401 the another shared library, OUTPUT_SECTION may be null. */
2402 if (output_section == NULL)
2403 h->esym.asym.sc = scUndefined;
2406 name = bfd_section_name (output_section->owner, output_section);
2408 if (strcmp (name, ".text") == 0)
2409 h->esym.asym.sc = scText;
2410 else if (strcmp (name, ".data") == 0)
2411 h->esym.asym.sc = scData;
2412 else if (strcmp (name, ".sdata") == 0)
2413 h->esym.asym.sc = scSData;
2414 else if (strcmp (name, ".rodata") == 0
2415 || strcmp (name, ".rdata") == 0)
2416 h->esym.asym.sc = scRData;
2417 else if (strcmp (name, ".bss") == 0)
2418 h->esym.asym.sc = scBss;
2419 else if (strcmp (name, ".sbss") == 0)
2420 h->esym.asym.sc = scSBss;
2421 else if (strcmp (name, ".init") == 0)
2422 h->esym.asym.sc = scInit;
2423 else if (strcmp (name, ".fini") == 0)
2424 h->esym.asym.sc = scFini;
2426 h->esym.asym.sc = scAbs;
2430 h->esym.asym.reserved = 0;
2431 h->esym.asym.index = indexNil;
2434 if (h->root.root.type == bfd_link_hash_common)
2435 h->esym.asym.value = h->root.root.u.c.size;
2436 else if (h->root.root.type == bfd_link_hash_defined
2437 || h->root.root.type == bfd_link_hash_defweak)
2439 if (h->esym.asym.sc == scCommon)
2440 h->esym.asym.sc = scBss;
2441 else if (h->esym.asym.sc == scSCommon)
2442 h->esym.asym.sc = scSBss;
2444 sec = h->root.root.u.def.section;
2445 output_section = sec->output_section;
2446 if (output_section != NULL)
2447 h->esym.asym.value = (h->root.root.u.def.value
2448 + sec->output_offset
2449 + output_section->vma);
2451 h->esym.asym.value = 0;
2453 else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2455 /* Set type and value for a symbol with a function stub. */
2456 h->esym.asym.st = stProc;
2457 sec = bfd_get_section_by_name (einfo->abfd, ".plt");
2459 h->esym.asym.value = 0;
2462 output_section = sec->output_section;
2463 if (output_section != NULL)
2464 h->esym.asym.value = (h->root.plt.offset
2465 + sec->output_offset
2466 + output_section->vma);
2468 h->esym.asym.value = 0;
2472 if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
2473 h->root.root.root.string,
2476 einfo->failed = true;
2483 /* Search for and possibly create a got entry. */
2485 static struct alpha_elf_got_entry *
2486 get_got_entry (abfd, h, r_type, r_symndx, r_addend)
2488 struct alpha_elf_link_hash_entry *h;
2489 unsigned long r_type, r_symndx;
2492 struct alpha_elf_got_entry *gotent;
2493 struct alpha_elf_got_entry **slot;
2496 slot = &h->got_entries;
2499 /* This is a local .got entry -- record for merge. */
2501 struct alpha_elf_got_entry **local_got_entries;
2503 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
2504 if (!local_got_entries)
2507 Elf_Internal_Shdr *symtab_hdr;
2509 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
2510 size = symtab_hdr->sh_info;
2511 size *= sizeof (struct alpha_elf_got_entry *);
2514 = (struct alpha_elf_got_entry **) bfd_alloc (abfd, size);
2515 if (!local_got_entries)
2518 memset (local_got_entries, 0, (size_t) size);
2519 alpha_elf_tdata (abfd)->local_got_entries = local_got_entries;
2522 slot = &local_got_entries[r_symndx];
2525 for (gotent = *slot; gotent ; gotent = gotent->next)
2526 if (gotent->gotobj == abfd
2527 && gotent->reloc_type == r_type
2528 && gotent->addend == r_addend)
2536 amt = sizeof (struct alpha_elf_got_entry);
2537 gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt);
2541 gotent->gotobj = abfd;
2542 gotent->addend = r_addend;
2543 gotent->got_offset = -1;
2544 gotent->use_count = 1;
2545 gotent->reloc_type = r_type;
2546 gotent->reloc_done = 0;
2547 gotent->reloc_xlated = 0;
2549 gotent->next = *slot;
2552 entry_size = alpha_got_entry_size (r_type);
2553 alpha_elf_tdata (abfd)->total_got_size += entry_size;
2555 alpha_elf_tdata(abfd)->local_got_size += entry_size;
2558 gotent->use_count += 1;
2563 /* Handle dynamic relocations when doing an Alpha ELF link. */
2566 elf64_alpha_check_relocs (abfd, info, sec, relocs)
2568 struct bfd_link_info *info;
2570 const Elf_Internal_Rela *relocs;
2574 const char *rel_sec_name;
2575 Elf_Internal_Shdr *symtab_hdr;
2576 struct alpha_elf_link_hash_entry **sym_hashes;
2577 const Elf_Internal_Rela *rel, *relend;
2578 boolean got_created;
2581 if (info->relocateable)
2584 dynobj = elf_hash_table(info)->dynobj;
2586 elf_hash_table(info)->dynobj = dynobj = abfd;
2589 rel_sec_name = NULL;
2590 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
2591 sym_hashes = alpha_elf_sym_hashes(abfd);
2592 got_created = false;
2594 relend = relocs + sec->reloc_count;
2595 for (rel = relocs; rel < relend; ++rel)
2603 unsigned long r_symndx, r_type;
2604 struct alpha_elf_link_hash_entry *h;
2605 unsigned int gotent_flags;
2606 boolean maybe_dynamic;
2610 r_symndx = ELF64_R_SYM (rel->r_info);
2611 if (r_symndx < symtab_hdr->sh_info)
2615 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2617 while (h->root.root.type == bfd_link_hash_indirect
2618 || h->root.root.type == bfd_link_hash_warning)
2619 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2621 h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
2624 /* We can only get preliminary data on whether a symbol is
2625 locally or externally defined, as not all of the input files
2626 have yet been processed. Do something with what we know, as
2627 this may help reduce memory usage and processing time later. */
2628 maybe_dynamic = false;
2629 if (h && ((info->shared
2630 && (!info->symbolic || info->allow_shlib_undefined))
2631 || ! (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2632 || h->root.root.type == bfd_link_hash_defweak))
2633 maybe_dynamic = true;
2637 r_type = ELF64_R_TYPE (rel->r_info);
2638 addend = rel->r_addend;
2642 case R_ALPHA_LITERAL:
2643 need = NEED_GOT | NEED_GOT_ENTRY;
2645 /* Remember how this literal is used from its LITUSEs.
2646 This will be important when it comes to decide if we can
2647 create a .plt entry for a function symbol. */
2648 while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE)
2649 if (rel->r_addend >= 1 && rel->r_addend <= 5)
2650 gotent_flags |= 1 << rel->r_addend;
2653 /* No LITUSEs -- presumably the address is used somehow. */
2654 if (gotent_flags == 0)
2655 gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
2658 case R_ALPHA_GPDISP:
2659 case R_ALPHA_GPREL16:
2660 case R_ALPHA_GPREL32:
2661 case R_ALPHA_GPRELHIGH:
2662 case R_ALPHA_GPRELLOW:
2667 case R_ALPHA_REFLONG:
2668 case R_ALPHA_REFQUAD:
2669 if (info->shared || maybe_dynamic)
2674 case R_ALPHA_TLSLDM:
2675 case R_ALPHA_GOTDTPREL:
2676 need = NEED_GOT | NEED_GOT_ENTRY;
2679 case R_ALPHA_GOTTPREL:
2680 need = NEED_GOT | NEED_GOT_ENTRY;
2682 info->flags |= DF_STATIC_TLS;
2685 case R_ALPHA_TPREL64:
2686 if (info->shared || maybe_dynamic)
2689 info->flags |= DF_STATIC_TLS;
2693 if (need & NEED_GOT)
2697 if (!elf64_alpha_create_got_section (abfd, info))
2700 /* Make sure the object's gotobj is set to itself so
2701 that we default to every object with its own .got.
2702 We'll merge .gots later once we've collected each
2704 alpha_elf_tdata(abfd)->gotobj = abfd;
2710 if (need & NEED_GOT_ENTRY)
2712 struct alpha_elf_got_entry *gotent;
2714 gotent = get_got_entry (abfd, h, r_type, r_symndx, addend);
2720 gotent->flags |= gotent_flags;
2723 gotent_flags |= h->flags;
2724 h->flags = gotent_flags;
2726 /* Make a guess as to whether a .plt entry is needed. */
2727 if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
2728 && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))
2729 h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2731 h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2736 if (need & NEED_DYNREL)
2738 if (rel_sec_name == NULL)
2740 rel_sec_name = (bfd_elf_string_from_elf_section
2741 (abfd, elf_elfheader(abfd)->e_shstrndx,
2742 elf_section_data(sec)->rel_hdr.sh_name));
2743 if (rel_sec_name == NULL)
2746 BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0
2747 && strcmp (bfd_get_section_name (abfd, sec),
2748 rel_sec_name+5) == 0);
2751 /* We need to create the section here now whether we eventually
2752 use it or not so that it gets mapped to an output section by
2753 the linker. If not used, we'll kill it in
2754 size_dynamic_sections. */
2757 sreloc = bfd_get_section_by_name (dynobj, rel_sec_name);
2762 sreloc = bfd_make_section (dynobj, rel_sec_name);
2763 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
2764 | SEC_LINKER_CREATED | SEC_READONLY);
2765 if (sec->flags & SEC_ALLOC)
2766 flags |= SEC_ALLOC | SEC_LOAD;
2768 || !bfd_set_section_flags (dynobj, sreloc, flags)
2769 || !bfd_set_section_alignment (dynobj, sreloc, 3))
2776 /* Since we havn't seen all of the input symbols yet, we
2777 don't know whether we'll actually need a dynamic relocation
2778 entry for this reloc. So make a record of it. Once we
2779 find out if this thing needs dynamic relocation we'll
2780 expand the relocation sections by the appropriate amount. */
2782 struct alpha_elf_reloc_entry *rent;
2784 for (rent = h->reloc_entries; rent; rent = rent->next)
2785 if (rent->rtype == r_type && rent->srel == sreloc)
2790 amt = sizeof (struct alpha_elf_reloc_entry);
2791 rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt);
2795 rent->srel = sreloc;
2796 rent->rtype = r_type;
2798 rent->reltext = ((sec->flags & (SEC_READONLY | SEC_ALLOC))
2799 == (SEC_READONLY | SEC_ALLOC));
2801 rent->next = h->reloc_entries;
2802 h->reloc_entries = rent;
2807 else if (info->shared)
2809 /* If this is a shared library, and the section is to be
2810 loaded into memory, we need a RELATIVE reloc. */
2811 sreloc->_raw_size += sizeof (Elf64_External_Rela);
2812 if ((sec->flags & (SEC_READONLY | SEC_ALLOC))
2813 == (SEC_READONLY | SEC_ALLOC))
2814 info->flags |= DF_TEXTREL;
2822 /* Adjust a symbol defined by a dynamic object and referenced by a
2823 regular object. The current definition is in some section of the
2824 dynamic object, but we're not including those sections. We have to
2825 change the definition to something the rest of the link can
2829 elf64_alpha_adjust_dynamic_symbol (info, h)
2830 struct bfd_link_info *info;
2831 struct elf_link_hash_entry *h;
2835 struct alpha_elf_link_hash_entry *ah;
2837 dynobj = elf_hash_table(info)->dynobj;
2838 ah = (struct alpha_elf_link_hash_entry *)h;
2840 /* Now that we've seen all of the input symbols, finalize our decision
2841 about whether this symbol should get a .plt entry. */
2843 if (alpha_elf_dynamic_symbol_p (h, info)
2844 && ((h->type == STT_FUNC
2845 && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR))
2846 || (h->type == STT_NOTYPE
2847 && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
2848 && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)))
2849 /* Don't prevent otherwise valid programs from linking by attempting
2850 to create a new .got entry somewhere. A Correct Solution would be
2851 to add a new .got section to a new object file and let it be merged
2852 somewhere later. But for now don't bother. */
2855 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2857 s = bfd_get_section_by_name(dynobj, ".plt");
2858 if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
2861 /* The first bit of the .plt is reserved. */
2862 if (s->_raw_size == 0)
2863 s->_raw_size = PLT_HEADER_SIZE;
2865 h->plt.offset = s->_raw_size;
2866 s->_raw_size += PLT_ENTRY_SIZE;
2868 /* If this symbol is not defined in a regular file, and we are not
2869 generating a shared library, then set the symbol to the location
2870 in the .plt. This is required to make function pointers compare
2871 equal between the normal executable and the shared library. */
2873 && h->root.type != bfd_link_hash_defweak)
2875 h->root.u.def.section = s;
2876 h->root.u.def.value = h->plt.offset;
2879 /* We also need a JMP_SLOT entry in the .rela.plt section. */
2880 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2881 BFD_ASSERT (s != NULL);
2882 s->_raw_size += sizeof (Elf64_External_Rela);
2887 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2889 /* If this is a weak symbol, and there is a real definition, the
2890 processor independent code will have arranged for us to see the
2891 real definition first, and we can just use the same value. */
2892 if (h->weakdef != NULL)
2894 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2895 || h->weakdef->root.type == bfd_link_hash_defweak);
2896 h->root.u.def.section = h->weakdef->root.u.def.section;
2897 h->root.u.def.value = h->weakdef->root.u.def.value;
2901 /* This is a reference to a symbol defined by a dynamic object which
2902 is not a function. The Alpha, since it uses .got entries for all
2903 symbols even in regular objects, does not need the hackery of a
2904 .dynbss section and COPY dynamic relocations. */
2909 /* Symbol versioning can create new symbols, and make our old symbols
2910 indirect to the new ones. Consolidate the got and reloc information
2911 in these situations. */
2914 elf64_alpha_merge_ind_symbols (hi, dummy)
2915 struct alpha_elf_link_hash_entry *hi;
2916 PTR dummy ATTRIBUTE_UNUSED;
2918 struct alpha_elf_link_hash_entry *hs;
2920 if (hi->root.root.type != bfd_link_hash_indirect)
2924 hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link;
2925 } while (hs->root.root.type == bfd_link_hash_indirect);
2927 /* Merge the flags. Whee. */
2929 hs->flags |= hi->flags;
2931 /* Merge the .got entries. Cannibalize the old symbol's list in
2932 doing so, since we don't need it anymore. */
2934 if (hs->got_entries == NULL)
2935 hs->got_entries = hi->got_entries;
2938 struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
2940 gsh = hs->got_entries;
2941 for (gi = hi->got_entries; gi ; gi = gin)
2944 for (gs = gsh; gs ; gs = gs->next)
2945 if (gi->gotobj == gs->gotobj
2946 && gi->reloc_type == gs->reloc_type
2947 && gi->addend == gs->addend)
2949 gi->use_count += gs->use_count;
2952 gi->next = hs->got_entries;
2953 hs->got_entries = gi;
2957 hi->got_entries = NULL;
2959 /* And similar for the reloc entries. */
2961 if (hs->reloc_entries == NULL)
2962 hs->reloc_entries = hi->reloc_entries;
2965 struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
2967 rsh = hs->reloc_entries;
2968 for (ri = hi->reloc_entries; ri ; ri = rin)
2971 for (rs = rsh; rs ; rs = rs->next)
2972 if (ri->rtype == rs->rtype)
2974 rs->count += ri->count;
2977 ri->next = hs->reloc_entries;
2978 hs->reloc_entries = ri;
2982 hi->reloc_entries = NULL;
2987 /* Is it possible to merge two object file's .got tables? */
2990 elf64_alpha_can_merge_gots (a, b)
2993 int total = alpha_elf_tdata (a)->total_got_size;
2996 /* Trivial quick fallout test. */
2997 if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE)
3000 /* By their nature, local .got entries cannot be merged. */
3001 if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE)
3004 /* Failing the common trivial comparison, we must effectively
3005 perform the merge. Not actually performing the merge means that
3006 we don't have to store undo information in case we fail. */
3007 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
3009 struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub);
3010 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
3013 n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
3014 for (i = 0; i < n; ++i)
3016 struct alpha_elf_got_entry *ae, *be;
3017 struct alpha_elf_link_hash_entry *h;
3020 while (h->root.root.type == bfd_link_hash_indirect
3021 || h->root.root.type == bfd_link_hash_warning)
3022 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3024 for (be = h->got_entries; be ; be = be->next)
3026 if (be->use_count == 0)
3028 if (be->gotobj != b)
3031 for (ae = h->got_entries; ae ; ae = ae->next)
3033 && ae->reloc_type == be->reloc_type
3034 && ae->addend == be->addend)
3037 total += alpha_got_entry_size (be->reloc_type);
3038 if (total > MAX_GOT_SIZE)
3048 /* Actually merge two .got tables. */
3051 elf64_alpha_merge_gots (a, b)
3054 int total = alpha_elf_tdata (a)->total_got_size;
3057 /* Remember local expansion. */
3059 int e = alpha_elf_tdata (b)->local_got_size;
3061 alpha_elf_tdata (a)->local_got_size += e;
3064 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
3066 struct alpha_elf_got_entry **local_got_entries;
3067 struct alpha_elf_link_hash_entry **hashes;
3068 Elf_Internal_Shdr *symtab_hdr;
3071 /* Let the local .got entries know they are part of a new subsegment. */
3072 local_got_entries = alpha_elf_tdata (bsub)->local_got_entries;
3073 if (local_got_entries)
3075 n = elf_tdata (bsub)->symtab_hdr.sh_info;
3076 for (i = 0; i < n; ++i)
3078 struct alpha_elf_got_entry *ent;
3079 for (ent = local_got_entries[i]; ent; ent = ent->next)
3084 /* Merge the global .got entries. */
3085 hashes = alpha_elf_sym_hashes (bsub);
3086 symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
3088 n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
3089 for (i = 0; i < n; ++i)
3091 struct alpha_elf_got_entry *ae, *be, **pbe, **start;
3092 struct alpha_elf_link_hash_entry *h;
3095 while (h->root.root.type == bfd_link_hash_indirect
3096 || h->root.root.type == bfd_link_hash_warning)
3097 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3099 start = &h->got_entries;
3100 for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next)
3102 if (be->use_count == 0)
3107 if (be->gotobj != b)
3110 for (ae = *start; ae ; ae = ae->next)
3112 && ae->reloc_type == be->reloc_type
3113 && ae->addend == be->addend)
3115 ae->flags |= be->flags;
3116 ae->use_count += be->use_count;
3121 total += alpha_got_entry_size (be->reloc_type);
3127 alpha_elf_tdata (bsub)->gotobj = a;
3129 alpha_elf_tdata (a)->total_got_size = total;
3131 /* Merge the two in_got chains. */
3136 while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL)
3139 alpha_elf_tdata (bsub)->in_got_link_next = b;
3143 /* Calculate the offsets for the got entries. */
3146 elf64_alpha_calc_got_offsets_for_symbol (h, arg)
3147 struct alpha_elf_link_hash_entry *h;
3148 PTR arg ATTRIBUTE_UNUSED;
3150 struct alpha_elf_got_entry *gotent;
3152 if (h->root.root.type == bfd_link_hash_warning)
3153 h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
3155 for (gotent = h->got_entries; gotent; gotent = gotent->next)
3156 if (gotent->use_count > 0)
3159 = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size;
3161 gotent->got_offset = *plge;
3162 *plge += alpha_got_entry_size (gotent->reloc_type);
3169 elf64_alpha_calc_got_offsets (info)
3170 struct bfd_link_info *info;
3172 bfd *i, *got_list = alpha_elf_hash_table(info)->got_list;
3174 /* First, zero out the .got sizes, as we may be recalculating the
3175 .got after optimizing it. */
3176 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
3177 alpha_elf_tdata(i)->got->_raw_size = 0;
3179 /* Next, fill in the offsets for all the global entries. */
3180 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3181 elf64_alpha_calc_got_offsets_for_symbol,
3184 /* Finally, fill in the offsets for the local entries. */
3185 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
3187 bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size;
3190 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
3192 struct alpha_elf_got_entry **local_got_entries, *gotent;
3195 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
3196 if (!local_got_entries)
3199 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
3200 for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
3201 if (gotent->use_count > 0)
3203 gotent->got_offset = got_offset;
3204 got_offset += alpha_got_entry_size (gotent->reloc_type);
3208 alpha_elf_tdata(i)->got->_raw_size = got_offset;
3209 alpha_elf_tdata(i)->got->_cooked_size = got_offset;
3213 /* Constructs the gots. */
3216 elf64_alpha_size_got_sections (output_bfd, info)
3217 bfd *output_bfd ATTRIBUTE_UNUSED;
3218 struct bfd_link_info *info;
3220 bfd *i, *got_list, *cur_got_obj = NULL;
3221 int something_changed = 0;
3223 got_list = alpha_elf_hash_table (info)->got_list;
3225 /* On the first time through, pretend we have an existing got list
3226 consisting of all of the input files. */
3227 if (got_list == NULL)
3229 for (i = info->input_bfds; i ; i = i->link_next)
3231 bfd *this_got = alpha_elf_tdata (i)->gotobj;
3232 if (this_got == NULL)
3235 /* We are assuming no merging has yet ocurred. */
3236 BFD_ASSERT (this_got == i);
3238 if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE)
3240 /* Yikes! A single object file has too many entries. */
3241 (*_bfd_error_handler)
3242 (_("%s: .got subsegment exceeds 64K (size %d)"),
3243 bfd_archive_filename (i),
3244 alpha_elf_tdata (this_got)->total_got_size);
3248 if (got_list == NULL)
3249 got_list = this_got;
3251 alpha_elf_tdata(cur_got_obj)->got_link_next = this_got;
3252 cur_got_obj = this_got;
3255 /* Strange degenerate case of no got references. */
3256 if (got_list == NULL)
3259 alpha_elf_hash_table (info)->got_list = got_list;
3261 /* Force got offsets to be recalculated. */
3262 something_changed = 1;
3265 cur_got_obj = got_list;
3266 i = alpha_elf_tdata(cur_got_obj)->got_link_next;
3269 if (elf64_alpha_can_merge_gots (cur_got_obj, i))
3271 elf64_alpha_merge_gots (cur_got_obj, i);
3272 i = alpha_elf_tdata(i)->got_link_next;
3273 alpha_elf_tdata(cur_got_obj)->got_link_next = i;
3274 something_changed = 1;
3279 i = alpha_elf_tdata(i)->got_link_next;
3283 /* Once the gots have been merged, fill in the got offsets for
3284 everything therein. */
3285 if (1 || something_changed)
3286 elf64_alpha_calc_got_offsets (info);
3292 elf64_alpha_always_size_sections (output_bfd, info)
3294 struct bfd_link_info *info;
3298 if (info->relocateable)
3301 /* First, take care of the indirect symbols created by versioning. */
3302 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3303 elf64_alpha_merge_ind_symbols,
3306 if (!elf64_alpha_size_got_sections (output_bfd, info))
3309 /* Allocate space for all of the .got subsections. */
3310 i = alpha_elf_hash_table (info)->got_list;
3311 for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
3313 asection *s = alpha_elf_tdata(i)->got;
3314 if (s->_raw_size > 0)
3316 s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size);
3317 if (s->contents == NULL)
3325 /* The number of dynamic relocations required by a static relocation. */
3328 alpha_dynamic_entries_for_reloc (r_type, dynamic, shared)
3329 int r_type, dynamic, shared;
3333 /* May appear in GOT entries. */
3335 return (dynamic ? 2 : shared ? 1 : 0);
3336 case R_ALPHA_TLSLDM:
3338 case R_ALPHA_LITERAL:
3339 return dynamic || shared;
3340 case R_ALPHA_GOTDTPREL:
3341 case R_ALPHA_GOTTPREL:
3344 /* May appear in data sections. */
3345 case R_ALPHA_REFLONG:
3346 case R_ALPHA_REFQUAD:
3347 return dynamic || shared;
3348 case R_ALPHA_SREL64:
3349 case R_ALPHA_TPREL64:
3352 /* Everything else is illegal. We'll issue an error during
3353 relocate_section. */
3359 /* Work out the sizes of the dynamic relocation entries. */
3362 elf64_alpha_calc_dynrel_sizes (h, info)
3363 struct alpha_elf_link_hash_entry *h;
3364 struct bfd_link_info *info;
3367 struct alpha_elf_reloc_entry *relent;
3368 struct alpha_elf_got_entry *gotent;
3371 if (h->root.root.type == bfd_link_hash_warning)
3372 h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
3374 /* If the symbol was defined as a common symbol in a regular object
3375 file, and there was no definition in any dynamic object, then the
3376 linker will have allocated space for the symbol in a common
3377 section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
3378 set. This is done for dynamic symbols in
3379 elf_adjust_dynamic_symbol but this is not done for non-dynamic
3380 symbols, somehow. */
3381 if (((h->root.elf_link_hash_flags
3382 & (ELF_LINK_HASH_DEF_REGULAR
3383 | ELF_LINK_HASH_REF_REGULAR
3384 | ELF_LINK_HASH_DEF_DYNAMIC))
3385 == ELF_LINK_HASH_REF_REGULAR)
3386 && (h->root.root.type == bfd_link_hash_defined
3387 || h->root.root.type == bfd_link_hash_defweak)
3388 && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
3390 h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3393 /* If the symbol is dynamic, we'll need all the relocations in their
3394 natural form. If this is a shared object, and it has been forced
3395 local, we'll need the same number of RELATIVE relocations. */
3397 dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
3399 for (relent = h->reloc_entries; relent; relent = relent->next)
3401 entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic,
3405 relent->srel->_raw_size +=
3406 entries * sizeof (Elf64_External_Rela) * relent->count;
3407 if (relent->reltext)
3408 info->flags |= DT_TEXTREL;
3413 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
3414 entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type,
3415 dynamic, info->shared);
3417 /* If we are using a .plt entry, subtract one, as the first
3418 reference uses a .rela.plt entry instead. */
3419 if (h->root.plt.offset != MINUS_ONE)
3424 bfd *dynobj = elf_hash_table(info)->dynobj;
3425 asection *srel = bfd_get_section_by_name (dynobj, ".rela.got");
3426 BFD_ASSERT (srel != NULL);
3427 srel->_raw_size += sizeof (Elf64_External_Rela) * entries;
3433 /* Set the sizes of the dynamic sections. */
3436 elf64_alpha_size_dynamic_sections (output_bfd, info)
3437 bfd *output_bfd ATTRIBUTE_UNUSED;
3438 struct bfd_link_info *info;
3444 dynobj = elf_hash_table(info)->dynobj;
3445 BFD_ASSERT(dynobj != NULL);
3447 if (elf_hash_table (info)->dynamic_sections_created)
3452 /* Set the contents of the .interp section to the interpreter. */
3455 s = bfd_get_section_by_name (dynobj, ".interp");
3456 BFD_ASSERT (s != NULL);
3457 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3458 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3461 /* Now that we've seen all of the input files, we can decide which
3462 symbols need dynamic relocation entries and which don't. We've
3463 collected information in check_relocs that we can now apply to
3464 size the dynamic relocation sections. */
3465 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3466 elf64_alpha_calc_dynrel_sizes,
3469 /* Shared libraries often require RELATIVE relocs, and some relocs
3470 require attention for the main application as well. */
3473 for (i = alpha_elf_hash_table(info)->got_list;
3474 i ; i = alpha_elf_tdata(i)->got_link_next)
3478 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
3480 struct alpha_elf_got_entry **local_got_entries, *gotent;
3483 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
3484 if (!local_got_entries)
3487 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
3488 for (gotent = local_got_entries[k];
3489 gotent ; gotent = gotent->next)
3490 if (gotent->use_count > 0)
3491 entries += (alpha_dynamic_entries_for_reloc
3492 (gotent->reloc_type, 0, info->shared));
3498 s = bfd_get_section_by_name (dynobj, ".rela.got");
3499 BFD_ASSERT (s != NULL);
3500 s->_raw_size += sizeof (Elf64_External_Rela) * entries;
3503 /* else we're not dynamic and by definition we don't need such things. */
3505 /* The check_relocs and adjust_dynamic_symbol entry points have
3506 determined the sizes of the various dynamic sections. Allocate
3509 for (s = dynobj->sections; s != NULL; s = s->next)
3514 if (!(s->flags & SEC_LINKER_CREATED))
3517 /* It's OK to base decisions on the section name, because none
3518 of the dynobj section names depend upon the input files. */
3519 name = bfd_get_section_name (dynobj, s);
3521 /* If we don't need this section, strip it from the output file.
3522 This is to handle .rela.bss and .rela.plt. We must create it
3523 in create_dynamic_sections, because it must be created before
3524 the linker maps input sections to output sections. The
3525 linker does that before adjust_dynamic_symbol is called, and
3526 it is that function which decides whether anything needs to
3527 go into these sections. */
3531 if (strncmp (name, ".rela", 5) == 0)
3533 strip = (s->_raw_size == 0);
3537 if (strcmp(name, ".rela.plt") == 0)
3540 /* We use the reloc_count field as a counter if we need
3541 to copy relocs into the output file. */
3545 else if (strcmp (name, ".plt") != 0)
3547 /* It's not one of our dynamic sections, so don't allocate space. */
3552 _bfd_strip_section_from_output (info, s);
3555 /* Allocate memory for the section contents. */
3556 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
3557 if (s->contents == NULL && s->_raw_size != 0)
3562 if (elf_hash_table (info)->dynamic_sections_created)
3564 /* Add some entries to the .dynamic section. We fill in the
3565 values later, in elf64_alpha_finish_dynamic_sections, but we
3566 must add the entries now so that we get the correct size for
3567 the .dynamic section. The DT_DEBUG entry is filled in by the
3568 dynamic linker and used by the debugger. */
3569 #define add_dynamic_entry(TAG, VAL) \
3570 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
3574 if (!add_dynamic_entry (DT_DEBUG, 0))
3578 if (!add_dynamic_entry (DT_PLTGOT, 0))
3583 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3584 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3585 || !add_dynamic_entry (DT_JMPREL, 0))
3589 if (!add_dynamic_entry (DT_RELA, 0)
3590 || !add_dynamic_entry (DT_RELASZ, 0)
3591 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
3594 if (info->flags & DF_TEXTREL)
3596 if (!add_dynamic_entry (DT_TEXTREL, 0))
3600 #undef add_dynamic_entry
3605 /* Relocate an Alpha ELF section. */
3608 elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section,
3609 contents, relocs, local_syms, local_sections)
3611 struct bfd_link_info *info;
3613 asection *input_section;
3615 Elf_Internal_Rela *relocs;
3616 Elf_Internal_Sym *local_syms;
3617 asection **local_sections;
3619 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3620 Elf_Internal_Rela *rel;
3621 Elf_Internal_Rela *relend;
3622 struct elf_link_tls_segment *tls_segment = NULL;
3623 asection *sgot = NULL, *srel = NULL, *srelgot = NULL;
3624 bfd *dynobj = NULL, *gotobj = NULL;
3625 bfd_vma gp = 0, tp_base = 0, dtp_base = 0;
3626 boolean ret_val = true;
3628 if (!info->relocateable)
3632 dynobj = elf_hash_table (info)->dynobj;
3634 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3636 name = (bfd_elf_string_from_elf_section
3637 (input_bfd, elf_elfheader(input_bfd)->e_shstrndx,
3638 elf_section_data(input_section)->rel_hdr.sh_name));
3639 BFD_ASSERT(name != NULL);
3640 srel = bfd_get_section_by_name (dynobj, name);
3642 /* Find the gp value for this input bfd. */
3643 gotobj = alpha_elf_tdata (input_bfd)->gotobj;
3646 sgot = alpha_elf_tdata (gotobj)->got;
3647 gp = _bfd_get_gp_value (gotobj);
3650 gp = (sgot->output_section->vma
3651 + sgot->output_offset
3653 _bfd_set_gp_value (gotobj, gp);
3657 tls_segment = elf_hash_table (info)->tls_segment;
3660 /* This is PT_TLS segment p_vaddr. */
3661 dtp_base = tls_segment->start;
3663 /* Main program TLS (whose template starts at PT_TLS p_vaddr)
3664 is assigned offset round(16, PT_TLS p_align). */
3665 tp_base = dtp_base - align_power (16, tls_segment->align);
3670 relend = relocs + input_section->reloc_count;
3671 for (; rel < relend; rel++)
3673 struct alpha_elf_link_hash_entry *h;
3674 struct alpha_elf_got_entry *gotent;
3675 bfd_reloc_status_type r;
3676 reloc_howto_type *howto;
3677 unsigned long r_symndx;
3678 Elf_Internal_Sym *sym;
3682 boolean dynamic_symbol_p;
3683 boolean undef_weak_ref;
3684 unsigned long r_type;
3686 r_type = ELF64_R_TYPE(rel->r_info);
3687 if (r_type >= R_ALPHA_max)
3689 (*_bfd_error_handler)
3690 (_("%s: unknown relocation type %d"),
3691 bfd_archive_filename (input_bfd), (int)r_type);
3692 bfd_set_error (bfd_error_bad_value);
3697 howto = elf64_alpha_howto_table + r_type;
3698 r_symndx = ELF64_R_SYM(rel->r_info);
3700 if (info->relocateable)
3702 /* This is a relocateable link. We don't have to change
3703 anything, unless the reloc is against a section symbol,
3704 in which case we have to adjust according to where the
3705 section symbol winds up in the output section. */
3707 /* The symbol associated with GPDISP and LITUSE is
3708 immaterial. Only the addend is significant. */
3709 if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE)
3712 if (r_symndx < symtab_hdr->sh_info)
3714 sym = local_syms + r_symndx;
3715 if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
3717 sec = local_sections[r_symndx];
3718 rel->r_addend += sec->output_offset + sym->st_value;
3725 /* This is a final link. */
3730 undef_weak_ref = false;
3732 if (r_symndx < symtab_hdr->sh_info)
3734 sym = local_syms + r_symndx;
3735 sec = local_sections[r_symndx];
3736 value = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
3738 gotent = alpha_elf_tdata(input_bfd)->local_got_entries[r_symndx];
3740 /* Need to adjust local GOT entries' addends for SEC_MERGE
3741 unless it has been done already. */
3742 if ((sec->flags & SEC_MERGE)
3743 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3744 && (elf_section_data (sec)->sec_info_type
3745 == ELF_INFO_TYPE_MERGE)
3746 && !gotent->reloc_xlated)
3748 struct alpha_elf_got_entry *ent;
3751 for (ent = gotent; ent; ent = ent->next)
3753 ent->reloc_xlated = 1;
3754 if (ent->use_count == 0)
3758 _bfd_merged_section_offset (output_bfd, &msec,
3759 elf_section_data (sec)->
3761 sym->st_value + ent->addend,
3763 ent->addend -= sym->st_value;
3764 ent->addend += msec->output_section->vma
3765 + msec->output_offset
3766 - sec->output_section->vma
3767 - sec->output_offset;
3771 dynamic_symbol_p = false;
3775 h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info];
3777 while (h->root.root.type == bfd_link_hash_indirect
3778 || h->root.root.type == bfd_link_hash_warning)
3779 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3782 if (h->root.root.type == bfd_link_hash_defined
3783 || h->root.root.type == bfd_link_hash_defweak)
3785 sec = h->root.root.u.def.section;
3787 /* Detect the cases that sym_sec->output_section is
3788 expected to be NULL -- all cases in which the symbol
3789 is defined in another shared module. This includes
3790 PLT relocs for which we've created a PLT entry and
3791 other relocs for which we're prepared to create
3792 dynamic relocations. */
3793 /* ??? Just accept it NULL and continue. */
3795 if (sec->output_section != NULL)
3796 value = (h->root.root.u.def.value
3797 + sec->output_section->vma
3798 + sec->output_offset);
3800 else if (h->root.root.type == bfd_link_hash_undefweak)
3801 undef_weak_ref = true;
3802 else if (info->shared
3803 && (!info->symbolic || info->allow_shlib_undefined)
3804 && !info->no_undefined
3805 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
3809 if (!((*info->callbacks->undefined_symbol)
3810 (info, h->root.root.root.string, input_bfd,
3811 input_section, rel->r_offset,
3812 (!info->shared || info->no_undefined
3813 || ELF_ST_VISIBILITY (h->root.other)))))
3819 dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info);
3820 gotent = h->got_entries;
3823 addend = rel->r_addend;
3826 /* Search for the proper got entry. */
3827 for (; gotent ; gotent = gotent->next)
3828 if (gotent->gotobj == gotobj
3829 && gotent->reloc_type == r_type
3830 && gotent->addend == addend)
3835 case R_ALPHA_GPDISP:
3837 bfd_byte *p_ldah, *p_lda;
3839 BFD_ASSERT(gp != 0);
3841 value = (input_section->output_section->vma
3842 + input_section->output_offset
3845 p_ldah = contents + rel->r_offset;
3846 p_lda = p_ldah + rel->r_addend;
3848 r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value,
3853 case R_ALPHA_LITERAL:
3854 BFD_ASSERT(sgot != NULL);
3855 BFD_ASSERT(gp != 0);
3856 BFD_ASSERT(gotent != NULL);
3857 BFD_ASSERT(gotent->use_count >= 1);
3859 if (!gotent->reloc_done)
3861 gotent->reloc_done = 1;
3863 bfd_put_64 (output_bfd, value,
3864 sgot->contents + gotent->got_offset);
3866 /* If the symbol has been forced local, output a
3867 RELATIVE reloc, otherwise it will be handled in
3868 finish_dynamic_symbol. */
3869 if (info->shared && !dynamic_symbol_p)
3871 Elf_Internal_Rela outrel;
3873 BFD_ASSERT(srelgot != NULL);
3875 outrel.r_offset = (sgot->output_section->vma
3876 + sgot->output_offset
3877 + gotent->got_offset);
3878 outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE);
3879 outrel.r_addend = value;
3881 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3882 ((Elf64_External_Rela *)
3884 + srelgot->reloc_count++);
3885 BFD_ASSERT (sizeof (Elf64_External_Rela)
3886 * srelgot->reloc_count
3887 <= srelgot->_cooked_size);
3891 value = (sgot->output_section->vma
3892 + sgot->output_offset
3893 + gotent->got_offset);
3897 case R_ALPHA_GPREL16:
3898 case R_ALPHA_GPREL32:
3899 case R_ALPHA_GPRELLOW:
3900 if (dynamic_symbol_p)
3902 (*_bfd_error_handler)
3903 (_("%s: gp-relative relocation against dynamic symbol %s"),
3904 bfd_archive_filename (input_bfd), h->root.root.root.string);
3907 BFD_ASSERT(gp != 0);
3911 case R_ALPHA_GPRELHIGH:
3912 if (dynamic_symbol_p)
3914 (*_bfd_error_handler)
3915 (_("%s: gp-relative relocation against dynamic symbol %s"),
3916 bfd_archive_filename (input_bfd), h->root.root.root.string);
3919 BFD_ASSERT(gp != 0);
3921 value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1);
3925 /* A call to a dynamic symbol is definitely out of range of
3926 the 16-bit displacement. Don't bother writing anything. */
3927 if (dynamic_symbol_p)
3932 /* The regular PC-relative stuff measures from the start of
3933 the instruction rather than the end. */
3937 case R_ALPHA_BRADDR:
3938 if (dynamic_symbol_p)
3940 (*_bfd_error_handler)
3941 (_("%s: pc-relative relocation against dynamic symbol %s"),
3942 bfd_archive_filename (input_bfd), h->root.root.root.string);
3945 /* The regular PC-relative stuff measures from the start of
3946 the instruction rather than the end. */
3955 /* The regular PC-relative stuff measures from the start of
3956 the instruction rather than the end. */
3959 /* The source and destination gp must be the same. Note that
3960 the source will always have an assigned gp, since we forced
3961 one in check_relocs, but that the destination may not, as
3962 it might not have had any relocations at all. Also take
3963 care not to crash if H is an undefined symbol. */
3964 if (h != NULL && sec != NULL
3965 && alpha_elf_tdata (sec->owner)->gotobj
3966 && gotobj != alpha_elf_tdata (sec->owner)->gotobj)
3968 (*_bfd_error_handler)
3969 (_("%s: change in gp: BRSGP %s"),
3970 bfd_archive_filename (input_bfd), h->root.root.root.string);
3974 /* The symbol should be marked either NOPV or STD_GPLOAD. */
3976 other = h->root.other;
3978 other = sym->st_other;
3979 switch (other & STO_ALPHA_STD_GPLOAD)
3981 case STO_ALPHA_NOPV:
3983 case STO_ALPHA_STD_GPLOAD:
3988 name = h->root.root.root.string;
3991 name = (bfd_elf_string_from_elf_section
3992 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3994 name = _("<unknown>");
3995 else if (name[0] == 0)
3996 name = bfd_section_name (input_bfd, sec);
3998 (*_bfd_error_handler)
3999 (_("%s: !samegp reloc against symbol without .prologue: %s"),
4000 bfd_archive_filename (input_bfd), name);
4008 case R_ALPHA_REFLONG:
4009 case R_ALPHA_REFQUAD:
4010 case R_ALPHA_DTPREL64:
4011 case R_ALPHA_TPREL64:
4013 Elf_Internal_Rela outrel;
4015 /* Careful here to remember RELATIVE relocations for global
4016 variables for symbolic shared objects. */
4018 if (dynamic_symbol_p)
4020 BFD_ASSERT(h->root.dynindx != -1);
4021 outrel.r_info = ELF64_R_INFO (h->root.dynindx, r_type);
4022 outrel.r_addend = addend;
4023 addend = 0, value = 0;
4025 else if (r_type == R_ALPHA_DTPREL64)
4027 BFD_ASSERT(tls_segment != NULL);
4031 else if (r_type == R_ALPHA_TPREL64)
4033 BFD_ASSERT(tls_segment != NULL);
4037 else if (info->shared
4039 && (input_section->flags & SEC_ALLOC))
4041 if (r_type == R_ALPHA_REFLONG)
4043 (*_bfd_error_handler)
4044 (_("%s: unhandled dynamic relocation against %s"),
4045 bfd_archive_filename (input_bfd),
4046 h->root.root.root.string);
4049 outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE);
4050 outrel.r_addend = value;
4055 BFD_ASSERT(srel != NULL);
4058 _bfd_elf_section_offset (output_bfd, info, input_section,
4060 if ((outrel.r_offset | 1) != (bfd_vma) -1)
4061 outrel.r_offset += (input_section->output_section->vma
4062 + input_section->output_offset);
4064 memset (&outrel, 0, sizeof outrel);
4066 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4067 ((Elf64_External_Rela *)
4069 + srel->reloc_count++);
4070 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
4071 <= srel->_cooked_size);
4075 case R_ALPHA_SREL16:
4076 case R_ALPHA_SREL32:
4077 case R_ALPHA_SREL64:
4078 if (dynamic_symbol_p)
4080 (*_bfd_error_handler)
4081 (_("%s: pc-relative relocation against dynamic symbol %s"),
4082 bfd_archive_filename (input_bfd), h->root.root.root.string);
4086 /* ??? .eh_frame references to discarded sections will be smashed
4087 to relocations against SHN_UNDEF. The .eh_frame format allows
4088 NULL to be encoded as 0 in any format, so this works here. */
4090 howto = (elf64_alpha_howto_table
4091 + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG));
4094 case R_ALPHA_TLSLDM:
4095 /* Ignore the symbol for the relocation. The result is always
4096 the current module. */
4097 dynamic_symbol_p = 0;
4101 if (!gotent->reloc_done)
4103 gotent->reloc_done = 1;
4105 /* Note that the module index for the main program is 1. */
4106 bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p,
4107 sgot->contents + gotent->got_offset);
4109 /* If the symbol has been forced local, output a
4110 DTPMOD64 reloc, otherwise it will be handled in
4111 finish_dynamic_symbol. */
4112 if (info->shared && !dynamic_symbol_p)
4114 Elf_Internal_Rela outrel;
4116 BFD_ASSERT(srelgot != NULL);
4118 outrel.r_offset = (sgot->output_section->vma
4119 + sgot->output_offset
4120 + gotent->got_offset);
4121 /* ??? Proper dynindx here. */
4122 outrel.r_info = ELF64_R_INFO (0, R_ALPHA_DTPMOD64);
4123 outrel.r_addend = 0;
4125 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4126 ((Elf64_External_Rela *)
4128 + srelgot->reloc_count++);
4129 BFD_ASSERT (sizeof (Elf64_External_Rela)
4130 * srelgot->reloc_count
4131 <= srelgot->_cooked_size);
4134 if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM)
4138 BFD_ASSERT(tls_segment != NULL);
4141 bfd_put_64 (output_bfd, value,
4142 sgot->contents + gotent->got_offset + 8);
4145 value = (sgot->output_section->vma
4146 + sgot->output_offset
4147 + gotent->got_offset);
4151 case R_ALPHA_DTPRELHI:
4152 case R_ALPHA_DTPRELLO:
4153 case R_ALPHA_DTPREL16:
4154 if (dynamic_symbol_p)
4156 (*_bfd_error_handler)
4157 (_("%s: dtp-relative relocation against dynamic symbol %s"),
4158 bfd_archive_filename (input_bfd), h->root.root.root.string);
4161 BFD_ASSERT(tls_segment != NULL);
4165 case R_ALPHA_TPRELHI:
4166 case R_ALPHA_TPRELLO:
4167 case R_ALPHA_TPREL16:
4168 if (dynamic_symbol_p)
4170 (*_bfd_error_handler)
4171 (_("%s: tp-relative relocation against dynamic symbol %s"),
4172 bfd_archive_filename (input_bfd), h->root.root.root.string);
4175 BFD_ASSERT(tls_segment != NULL);
4179 case R_ALPHA_GOTDTPREL:
4180 case R_ALPHA_GOTTPREL:
4181 BFD_ASSERT(sgot != NULL);
4182 BFD_ASSERT(gp != 0);
4183 BFD_ASSERT(gotent != NULL);
4184 BFD_ASSERT(gotent->use_count >= 1);
4186 if (!gotent->reloc_done)
4188 gotent->reloc_done = 1;
4190 if (dynamic_symbol_p)
4194 BFD_ASSERT(tls_segment != NULL);
4195 value -= (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base);
4197 bfd_put_64 (output_bfd, value,
4198 sgot->contents + gotent->got_offset);
4201 value = (sgot->output_section->vma
4202 + sgot->output_offset
4203 + gotent->got_offset);
4209 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4210 contents, rel->r_offset, value, 0);
4219 case bfd_reloc_overflow:
4223 /* Don't warn if the overflow is due to pc relative reloc
4224 against discarded section. Section optimization code should
4227 if (r_symndx < symtab_hdr->sh_info
4228 && sec != NULL && howto->pc_relative
4229 && elf_discarded_section (sec))
4233 name = h->root.root.root.string;
4236 name = (bfd_elf_string_from_elf_section
4237 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4241 name = bfd_section_name (input_bfd, sec);
4243 if (! ((*info->callbacks->reloc_overflow)
4244 (info, name, howto->name, (bfd_vma) 0,
4245 input_bfd, input_section, rel->r_offset)))
4251 case bfd_reloc_outofrange:
4259 /* Finish up dynamic symbol handling. We set the contents of various
4260 dynamic sections here. */
4263 elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym)
4265 struct bfd_link_info *info;
4266 struct elf_link_hash_entry *h;
4267 Elf_Internal_Sym *sym;
4269 bfd *dynobj = elf_hash_table(info)->dynobj;
4271 if (h->plt.offset != MINUS_ONE)
4273 /* Fill in the .plt entry for this symbol. */
4274 asection *splt, *sgot, *srel;
4275 Elf_Internal_Rela outrel;
4276 bfd_vma got_addr, plt_addr;
4278 struct alpha_elf_got_entry *gotent;
4280 BFD_ASSERT (h->dynindx != -1);
4282 /* The first .got entry will be updated by the .plt with the
4283 address of the target function. */
4284 gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
4285 BFD_ASSERT (gotent && gotent->addend == 0);
4287 splt = bfd_get_section_by_name (dynobj, ".plt");
4288 BFD_ASSERT (splt != NULL);
4289 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4290 BFD_ASSERT (srel != NULL);
4291 sgot = alpha_elf_tdata (gotent->gotobj)->got;
4292 BFD_ASSERT (sgot != NULL);
4294 got_addr = (sgot->output_section->vma
4295 + sgot->output_offset
4296 + gotent->got_offset);
4297 plt_addr = (splt->output_section->vma
4298 + splt->output_offset
4301 plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
4303 /* Fill in the entry in the procedure linkage table. */
4305 bfd_vma insn1, insn2, insn3;
4307 insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff);
4308 insn2 = PLT_ENTRY_WORD2;
4309 insn3 = PLT_ENTRY_WORD3;
4311 bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset);
4312 bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4);
4313 bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8);
4316 /* Fill in the entry in the .rela.plt section. */
4317 outrel.r_offset = got_addr;
4318 outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT);
4319 outrel.r_addend = 0;
4321 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4322 ((Elf64_External_Rela *)srel->contents
4325 if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4327 /* Mark the symbol as undefined, rather than as defined in the
4328 .plt section. Leave the value alone. */
4329 sym->st_shndx = SHN_UNDEF;
4332 /* Fill in the entries in the .got. */
4333 bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset);
4335 /* Subsequent .got entries will continue to bounce through the .plt. */
4338 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4339 BFD_ASSERT (! info->shared || srel != NULL);
4341 gotent = gotent->next;
4344 sgot = alpha_elf_tdata(gotent->gotobj)->got;
4345 BFD_ASSERT(sgot != NULL);
4346 BFD_ASSERT(gotent->addend == 0);
4348 bfd_put_64 (output_bfd, plt_addr,
4349 sgot->contents + gotent->got_offset);
4353 outrel.r_offset = (sgot->output_section->vma
4354 + sgot->output_offset
4355 + gotent->got_offset);
4356 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
4357 outrel.r_addend = plt_addr;
4359 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4360 ((Elf64_External_Rela *)
4362 + srel->reloc_count++);
4363 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
4364 <= srel->_cooked_size);
4367 gotent = gotent->next;
4369 while (gotent != NULL);
4372 else if (alpha_elf_dynamic_symbol_p (h, info))
4374 /* Fill in the dynamic relocations for this symbol's .got entries. */
4376 Elf_Internal_Rela outrel;
4377 struct alpha_elf_got_entry *gotent;
4379 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4380 BFD_ASSERT (srel != NULL);
4382 for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
4384 gotent = gotent->next)
4386 asection *sgot = alpha_elf_tdata (gotent->gotobj)->got;
4389 outrel.r_offset = (sgot->output_section->vma
4390 + sgot->output_offset
4391 + gotent->got_offset);
4393 r_type = gotent->reloc_type;
4396 case R_ALPHA_LITERAL:
4397 r_type = R_ALPHA_GLOB_DAT;
4400 r_type = R_ALPHA_DTPMOD64;
4402 case R_ALPHA_GOTDTPREL:
4403 r_type = R_ALPHA_DTPREL64;
4405 case R_ALPHA_GOTTPREL:
4406 r_type = R_ALPHA_TPREL64;
4408 case R_ALPHA_TLSLDM:
4413 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
4414 outrel.r_addend = gotent->addend;
4416 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4417 ((Elf64_External_Rela *)srel->contents
4418 + srel->reloc_count++));
4420 if (gotent->reloc_type == R_ALPHA_TLSGD)
4422 outrel.r_offset += 8;
4423 outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_DTPREL64);
4425 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4426 ((Elf64_External_Rela *)srel->contents
4427 + srel->reloc_count++));
4430 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
4431 <= srel->_cooked_size);
4435 /* Mark some specially defined symbols as absolute. */
4436 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4437 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4438 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4439 sym->st_shndx = SHN_ABS;
4444 /* Finish up the dynamic sections. */
4447 elf64_alpha_finish_dynamic_sections (output_bfd, info)
4449 struct bfd_link_info *info;
4454 dynobj = elf_hash_table (info)->dynobj;
4455 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4457 if (elf_hash_table (info)->dynamic_sections_created)
4460 Elf64_External_Dyn *dyncon, *dynconend;
4462 splt = bfd_get_section_by_name (dynobj, ".plt");
4463 BFD_ASSERT (splt != NULL && sdyn != NULL);
4465 dyncon = (Elf64_External_Dyn *) sdyn->contents;
4466 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4467 for (; dyncon < dynconend; dyncon++)
4469 Elf_Internal_Dyn dyn;
4473 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4488 /* My interpretation of the TIS v1.1 ELF document indicates
4489 that RELASZ should not include JMPREL. This is not what
4490 the rest of the BFD does. It is, however, what the
4491 glibc ld.so wants. Do this fixup here until we found
4492 out who is right. */
4493 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4497 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
4502 s = bfd_get_section_by_name (output_bfd, name);
4503 dyn.d_un.d_ptr = (s ? s->vma : 0);
4507 s = bfd_get_section_by_name (output_bfd, name);
4509 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
4513 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
4516 /* Initialize the PLT0 entry */
4517 if (splt->_raw_size > 0)
4519 bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents);
4520 bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4);
4521 bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8);
4522 bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12);
4524 /* The next two words will be filled in by ld.so */
4525 bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16);
4526 bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24);
4528 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
4536 /* We need to use a special link routine to handle the .mdebug section.
4537 We need to merge all instances of these sections together, not write
4538 them all out sequentially. */
4541 elf64_alpha_final_link (abfd, info)
4543 struct bfd_link_info *info;
4546 struct bfd_link_order *p;
4547 asection *mdebug_sec;
4548 struct ecoff_debug_info debug;
4549 const struct ecoff_debug_swap *swap
4550 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4551 HDRR *symhdr = &debug.symbolic_header;
4552 PTR mdebug_handle = NULL;
4554 /* Go through the sections and collect the mdebug information. */
4556 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4558 if (strcmp (o->name, ".mdebug") == 0)
4560 struct extsym_info einfo;
4562 /* We have found the .mdebug section in the output file.
4563 Look through all the link_orders comprising it and merge
4564 the information together. */
4565 symhdr->magic = swap->sym_magic;
4566 /* FIXME: What should the version stamp be? */
4568 symhdr->ilineMax = 0;
4572 symhdr->isymMax = 0;
4573 symhdr->ioptMax = 0;
4574 symhdr->iauxMax = 0;
4576 symhdr->issExtMax = 0;
4579 symhdr->iextMax = 0;
4581 /* We accumulate the debugging information itself in the
4582 debug_info structure. */
4584 debug.external_dnr = NULL;
4585 debug.external_pdr = NULL;
4586 debug.external_sym = NULL;
4587 debug.external_opt = NULL;
4588 debug.external_aux = NULL;
4590 debug.ssext = debug.ssext_end = NULL;
4591 debug.external_fdr = NULL;
4592 debug.external_rfd = NULL;
4593 debug.external_ext = debug.external_ext_end = NULL;
4595 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
4596 if (mdebug_handle == (PTR) NULL)
4605 static const char * const name[] =
4607 ".text", ".init", ".fini", ".data",
4608 ".rodata", ".sdata", ".sbss", ".bss"
4610 static const int sc[] = { scText, scInit, scFini, scData,
4611 scRData, scSData, scSBss, scBss };
4614 esym.cobol_main = 0;
4618 esym.asym.iss = issNil;
4619 esym.asym.st = stLocal;
4620 esym.asym.reserved = 0;
4621 esym.asym.index = indexNil;
4622 for (i = 0; i < 8; i++)
4624 esym.asym.sc = sc[i];
4625 s = bfd_get_section_by_name (abfd, name[i]);
4628 esym.asym.value = s->vma;
4629 last = s->vma + s->_raw_size;
4632 esym.asym.value = last;
4634 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
4640 for (p = o->link_order_head;
4641 p != (struct bfd_link_order *) NULL;
4644 asection *input_section;
4646 const struct ecoff_debug_swap *input_swap;
4647 struct ecoff_debug_info input_debug;
4651 if (p->type != bfd_indirect_link_order)
4653 if (p->type == bfd_data_link_order)
4658 input_section = p->u.indirect.section;
4659 input_bfd = input_section->owner;
4661 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
4662 || (get_elf_backend_data (input_bfd)
4663 ->elf_backend_ecoff_debug_swap) == NULL)
4665 /* I don't know what a non ALPHA ELF bfd would be
4666 doing with a .mdebug section, but I don't really
4667 want to deal with it. */
4671 input_swap = (get_elf_backend_data (input_bfd)
4672 ->elf_backend_ecoff_debug_swap);
4674 BFD_ASSERT (p->size == input_section->_raw_size);
4676 /* The ECOFF linking code expects that we have already
4677 read in the debugging information and set up an
4678 ecoff_debug_info structure, so we do that now. */
4679 if (!elf64_alpha_read_ecoff_info (input_bfd, input_section,
4683 if (! (bfd_ecoff_debug_accumulate
4684 (mdebug_handle, abfd, &debug, swap, input_bfd,
4685 &input_debug, input_swap, info)))
4688 /* Loop through the external symbols. For each one with
4689 interesting information, try to find the symbol in
4690 the linker global hash table and save the information
4691 for the output external symbols. */
4692 eraw_src = input_debug.external_ext;
4693 eraw_end = (eraw_src
4694 + (input_debug.symbolic_header.iextMax
4695 * input_swap->external_ext_size));
4697 eraw_src < eraw_end;
4698 eraw_src += input_swap->external_ext_size)
4702 struct alpha_elf_link_hash_entry *h;
4704 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
4705 if (ext.asym.sc == scNil
4706 || ext.asym.sc == scUndefined
4707 || ext.asym.sc == scSUndefined)
4710 name = input_debug.ssext + ext.asym.iss;
4711 h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info),
4712 name, false, false, true);
4713 if (h == NULL || h->esym.ifd != -2)
4719 < input_debug.symbolic_header.ifdMax);
4720 ext.ifd = input_debug.ifdmap[ext.ifd];
4726 /* Free up the information we just read. */
4727 free (input_debug.line);
4728 free (input_debug.external_dnr);
4729 free (input_debug.external_pdr);
4730 free (input_debug.external_sym);
4731 free (input_debug.external_opt);
4732 free (input_debug.external_aux);
4733 free (input_debug.ss);
4734 free (input_debug.ssext);
4735 free (input_debug.external_fdr);
4736 free (input_debug.external_rfd);
4737 free (input_debug.external_ext);
4739 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4740 elf_link_input_bfd ignores this section. */
4741 input_section->flags &=~ SEC_HAS_CONTENTS;
4744 /* Build the external symbol information. */
4747 einfo.debug = &debug;
4749 einfo.failed = false;
4750 elf_link_hash_traverse (elf_hash_table (info),
4751 elf64_alpha_output_extsym,
4756 /* Set the size of the .mdebug section. */
4757 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
4759 /* Skip this section later on (I don't think this currently
4760 matters, but someday it might). */
4761 o->link_order_head = (struct bfd_link_order *) NULL;
4767 /* Invoke the regular ELF backend linker to do all the work. */
4768 if (! bfd_elf64_bfd_final_link (abfd, info))
4771 /* Now write out the computed sections. */
4773 /* The .got subsections... */
4775 bfd *i, *dynobj = elf_hash_table(info)->dynobj;
4776 for (i = alpha_elf_hash_table(info)->got_list;
4778 i = alpha_elf_tdata(i)->got_link_next)
4782 /* elf_bfd_final_link already did everything in dynobj. */
4786 sgot = alpha_elf_tdata(i)->got;
4787 if (! bfd_set_section_contents (abfd, sgot->output_section,
4789 (file_ptr) sgot->output_offset,
4795 if (mdebug_sec != (asection *) NULL)
4797 BFD_ASSERT (abfd->output_has_begun);
4798 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
4800 mdebug_sec->filepos))
4803 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
4809 static enum elf_reloc_type_class
4810 elf64_alpha_reloc_type_class (rela)
4811 const Elf_Internal_Rela *rela;
4813 switch ((int) ELF64_R_TYPE (rela->r_info))
4815 case R_ALPHA_RELATIVE:
4816 return reloc_class_relative;
4817 case R_ALPHA_JMP_SLOT:
4818 return reloc_class_plt;
4820 return reloc_class_copy;
4822 return reloc_class_normal;
4826 /* ECOFF swapping routines. These are used when dealing with the
4827 .mdebug section, which is in the ECOFF debugging format. Copied
4828 from elf32-mips.c. */
4829 static const struct ecoff_debug_swap
4830 elf64_alpha_ecoff_debug_swap =
4832 /* Symbol table magic number. */
4834 /* Alignment of debugging information. E.g., 4. */
4836 /* Sizes of external symbolic information. */
4837 sizeof (struct hdr_ext),
4838 sizeof (struct dnr_ext),
4839 sizeof (struct pdr_ext),
4840 sizeof (struct sym_ext),
4841 sizeof (struct opt_ext),
4842 sizeof (struct fdr_ext),
4843 sizeof (struct rfd_ext),
4844 sizeof (struct ext_ext),
4845 /* Functions to swap in external symbolic data. */
4854 _bfd_ecoff_swap_tir_in,
4855 _bfd_ecoff_swap_rndx_in,
4856 /* Functions to swap out external symbolic data. */
4865 _bfd_ecoff_swap_tir_out,
4866 _bfd_ecoff_swap_rndx_out,
4867 /* Function to read in symbolic data. */
4868 elf64_alpha_read_ecoff_info
4871 /* Use a non-standard hash bucket size of 8. */
4873 const struct elf_size_info alpha_elf_size_info =
4875 sizeof (Elf64_External_Ehdr),
4876 sizeof (Elf64_External_Phdr),
4877 sizeof (Elf64_External_Shdr),
4878 sizeof (Elf64_External_Rel),
4879 sizeof (Elf64_External_Rela),
4880 sizeof (Elf64_External_Sym),
4881 sizeof (Elf64_External_Dyn),
4882 sizeof (Elf_External_Note),
4886 ELFCLASS64, EV_CURRENT,
4887 bfd_elf64_write_out_phdrs,
4888 bfd_elf64_write_shdrs_and_ehdr,
4889 bfd_elf64_write_relocs,
4890 bfd_elf64_swap_symbol_out,
4891 bfd_elf64_slurp_reloc_table,
4892 bfd_elf64_slurp_symbol_table,
4893 bfd_elf64_swap_dyn_in,
4894 bfd_elf64_swap_dyn_out,
4901 #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec
4902 #define TARGET_LITTLE_NAME "elf64-alpha"
4903 #define ELF_ARCH bfd_arch_alpha
4904 #define ELF_MACHINE_CODE EM_ALPHA
4905 #define ELF_MAXPAGESIZE 0x10000
4907 #define bfd_elf64_bfd_link_hash_table_create \
4908 elf64_alpha_bfd_link_hash_table_create
4910 #define bfd_elf64_bfd_reloc_type_lookup \
4911 elf64_alpha_bfd_reloc_type_lookup
4912 #define elf_info_to_howto \
4913 elf64_alpha_info_to_howto
4915 #define bfd_elf64_mkobject \
4916 elf64_alpha_mkobject
4917 #define elf_backend_object_p \
4918 elf64_alpha_object_p
4920 #define elf_backend_section_from_shdr \
4921 elf64_alpha_section_from_shdr
4922 #define elf_backend_section_flags \
4923 elf64_alpha_section_flags
4924 #define elf_backend_fake_sections \
4925 elf64_alpha_fake_sections
4927 #define bfd_elf64_bfd_is_local_label_name \
4928 elf64_alpha_is_local_label_name
4929 #define bfd_elf64_find_nearest_line \
4930 elf64_alpha_find_nearest_line
4931 #define bfd_elf64_bfd_relax_section \
4932 elf64_alpha_relax_section
4934 #define elf_backend_add_symbol_hook \
4935 elf64_alpha_add_symbol_hook
4936 #define elf_backend_check_relocs \
4937 elf64_alpha_check_relocs
4938 #define elf_backend_create_dynamic_sections \
4939 elf64_alpha_create_dynamic_sections
4940 #define elf_backend_adjust_dynamic_symbol \
4941 elf64_alpha_adjust_dynamic_symbol
4942 #define elf_backend_always_size_sections \
4943 elf64_alpha_always_size_sections
4944 #define elf_backend_size_dynamic_sections \
4945 elf64_alpha_size_dynamic_sections
4946 #define elf_backend_relocate_section \
4947 elf64_alpha_relocate_section
4948 #define elf_backend_finish_dynamic_symbol \
4949 elf64_alpha_finish_dynamic_symbol
4950 #define elf_backend_finish_dynamic_sections \
4951 elf64_alpha_finish_dynamic_sections
4952 #define bfd_elf64_bfd_final_link \
4953 elf64_alpha_final_link
4954 #define elf_backend_reloc_type_class \
4955 elf64_alpha_reloc_type_class
4957 #define elf_backend_ecoff_debug_swap \
4958 &elf64_alpha_ecoff_debug_swap
4960 #define elf_backend_size_info \
4963 /* A few constants that determine how the .plt section is set up. */
4964 #define elf_backend_want_got_plt 0
4965 #define elf_backend_plt_readonly 0
4966 #define elf_backend_want_plt_sym 1
4967 #define elf_backend_got_header_size 0
4968 #define elf_backend_plt_header_size PLT_HEADER_SIZE
4970 #include "elf64-target.h"