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 /* FIXME: Create a runtime procedure table from the .mdebug section.
2486 mips_elf_create_procedure_table (handle, abfd, info, s, debug)
2489 struct bfd_link_info *info;
2491 struct ecoff_debug_info *debug;
2494 /* Search for and possibly create a got entry. */
2496 static struct alpha_elf_got_entry *
2497 get_got_entry (abfd, h, r_type, r_symndx, r_addend)
2499 struct alpha_elf_link_hash_entry *h;
2500 unsigned long r_type, r_symndx;
2503 struct alpha_elf_got_entry *gotent;
2504 struct alpha_elf_got_entry **slot;
2507 slot = &h->got_entries;
2510 /* This is a local .got entry -- record for merge. */
2512 struct alpha_elf_got_entry **local_got_entries;
2514 local_got_entries = alpha_elf_tdata(abfd)->local_got_entries;
2515 if (!local_got_entries)
2518 Elf_Internal_Shdr *symtab_hdr;
2520 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
2521 size = symtab_hdr->sh_info;
2522 size *= sizeof (struct alpha_elf_got_entry *);
2525 = (struct alpha_elf_got_entry **) bfd_alloc (abfd, size);
2526 if (!local_got_entries)
2529 memset (local_got_entries, 0, (size_t) size);
2530 alpha_elf_tdata (abfd)->local_got_entries = local_got_entries;
2533 slot = &local_got_entries[r_symndx];
2536 for (gotent = *slot; gotent ; gotent = gotent->next)
2537 if (gotent->gotobj == abfd
2538 && gotent->reloc_type == r_type
2539 && gotent->addend == r_addend)
2547 amt = sizeof (struct alpha_elf_got_entry);
2548 gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt);
2552 gotent->gotobj = abfd;
2553 gotent->addend = r_addend;
2554 gotent->got_offset = -1;
2555 gotent->use_count = 1;
2556 gotent->reloc_type = r_type;
2557 gotent->reloc_done = 0;
2558 gotent->reloc_xlated = 0;
2560 gotent->next = *slot;
2563 entry_size = alpha_got_entry_size (r_type);
2564 alpha_elf_tdata (abfd)->total_got_size += entry_size;
2566 alpha_elf_tdata(abfd)->local_got_size += entry_size;
2569 gotent->use_count += 1;
2574 /* Handle dynamic relocations when doing an Alpha ELF link. */
2577 elf64_alpha_check_relocs (abfd, info, sec, relocs)
2579 struct bfd_link_info *info;
2581 const Elf_Internal_Rela *relocs;
2585 const char *rel_sec_name;
2586 Elf_Internal_Shdr *symtab_hdr;
2587 struct alpha_elf_link_hash_entry **sym_hashes;
2588 const Elf_Internal_Rela *rel, *relend;
2589 boolean got_created;
2592 if (info->relocateable)
2595 dynobj = elf_hash_table(info)->dynobj;
2597 elf_hash_table(info)->dynobj = dynobj = abfd;
2600 rel_sec_name = NULL;
2601 symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
2602 sym_hashes = alpha_elf_sym_hashes(abfd);
2603 got_created = false;
2605 relend = relocs + sec->reloc_count;
2606 for (rel = relocs; rel < relend; ++rel)
2614 unsigned long r_symndx, r_type;
2615 struct alpha_elf_link_hash_entry *h;
2616 unsigned int gotent_flags;
2617 boolean maybe_dynamic;
2621 r_symndx = ELF64_R_SYM (rel->r_info);
2622 if (r_symndx < symtab_hdr->sh_info)
2626 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2628 while (h->root.root.type == bfd_link_hash_indirect
2629 || h->root.root.type == bfd_link_hash_warning)
2630 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
2632 h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
2635 /* We can only get preliminary data on whether a symbol is
2636 locally or externally defined, as not all of the input files
2637 have yet been processed. Do something with what we know, as
2638 this may help reduce memory usage and processing time later. */
2639 maybe_dynamic = false;
2640 if (h && ((info->shared
2641 && (!info->symbolic || info->allow_shlib_undefined))
2642 || ! (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2643 || h->root.root.type == bfd_link_hash_defweak))
2644 maybe_dynamic = true;
2648 r_type = ELF64_R_TYPE (rel->r_info);
2649 addend = rel->r_addend;
2653 case R_ALPHA_LITERAL:
2654 need = NEED_GOT | NEED_GOT_ENTRY;
2656 /* Remember how this literal is used from its LITUSEs.
2657 This will be important when it comes to decide if we can
2658 create a .plt entry for a function symbol. */
2659 while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE)
2660 if (rel->r_addend >= 1 && rel->r_addend <= 5)
2661 gotent_flags |= 1 << rel->r_addend;
2664 /* No LITUSEs -- presumably the address is used somehow. */
2665 if (gotent_flags == 0)
2666 gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR;
2669 case R_ALPHA_GPDISP:
2670 case R_ALPHA_GPREL16:
2671 case R_ALPHA_GPREL32:
2672 case R_ALPHA_GPRELHIGH:
2673 case R_ALPHA_GPRELLOW:
2678 case R_ALPHA_REFLONG:
2679 case R_ALPHA_REFQUAD:
2680 if (info->shared || maybe_dynamic)
2685 case R_ALPHA_TLSLDM:
2686 case R_ALPHA_GOTDTPREL:
2687 need = NEED_GOT | NEED_GOT_ENTRY;
2690 case R_ALPHA_GOTTPREL:
2691 need = NEED_GOT | NEED_GOT_ENTRY;
2693 info->flags |= DF_STATIC_TLS;
2696 case R_ALPHA_TPREL64:
2697 if (info->shared || maybe_dynamic)
2700 info->flags |= DF_STATIC_TLS;
2704 if (need & NEED_GOT)
2708 if (!elf64_alpha_create_got_section (abfd, info))
2711 /* Make sure the object's gotobj is set to itself so
2712 that we default to every object with its own .got.
2713 We'll merge .gots later once we've collected each
2715 alpha_elf_tdata(abfd)->gotobj = abfd;
2721 if (need & NEED_GOT_ENTRY)
2723 struct alpha_elf_got_entry *gotent;
2725 gotent = get_got_entry (abfd, h, r_type, r_symndx, addend);
2731 gotent->flags |= gotent_flags;
2734 gotent_flags |= h->flags;
2735 h->flags = gotent_flags;
2737 /* Make a guess as to whether a .plt entry is needed. */
2738 if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
2739 && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))
2740 h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2742 h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2747 if (need & NEED_DYNREL)
2749 if (rel_sec_name == NULL)
2751 rel_sec_name = (bfd_elf_string_from_elf_section
2752 (abfd, elf_elfheader(abfd)->e_shstrndx,
2753 elf_section_data(sec)->rel_hdr.sh_name));
2754 if (rel_sec_name == NULL)
2757 BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0
2758 && strcmp (bfd_get_section_name (abfd, sec),
2759 rel_sec_name+5) == 0);
2762 /* We need to create the section here now whether we eventually
2763 use it or not so that it gets mapped to an output section by
2764 the linker. If not used, we'll kill it in
2765 size_dynamic_sections. */
2768 sreloc = bfd_get_section_by_name (dynobj, rel_sec_name);
2773 sreloc = bfd_make_section (dynobj, rel_sec_name);
2774 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
2775 | SEC_LINKER_CREATED | SEC_READONLY);
2776 if (sec->flags & SEC_ALLOC)
2777 flags |= SEC_ALLOC | SEC_LOAD;
2779 || !bfd_set_section_flags (dynobj, sreloc, flags)
2780 || !bfd_set_section_alignment (dynobj, sreloc, 3))
2787 /* Since we havn't seen all of the input symbols yet, we
2788 don't know whether we'll actually need a dynamic relocation
2789 entry for this reloc. So make a record of it. Once we
2790 find out if this thing needs dynamic relocation we'll
2791 expand the relocation sections by the appropriate amount. */
2793 struct alpha_elf_reloc_entry *rent;
2795 for (rent = h->reloc_entries; rent; rent = rent->next)
2796 if (rent->rtype == r_type && rent->srel == sreloc)
2801 amt = sizeof (struct alpha_elf_reloc_entry);
2802 rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt);
2806 rent->srel = sreloc;
2807 rent->rtype = r_type;
2809 rent->reltext = ((sec->flags & (SEC_READONLY | SEC_ALLOC))
2810 == (SEC_READONLY | SEC_ALLOC));
2812 rent->next = h->reloc_entries;
2813 h->reloc_entries = rent;
2818 else if (info->shared)
2820 /* If this is a shared library, and the section is to be
2821 loaded into memory, we need a RELATIVE reloc. */
2822 sreloc->_raw_size += sizeof (Elf64_External_Rela);
2823 if ((sec->flags & (SEC_READONLY | SEC_ALLOC))
2824 == (SEC_READONLY | SEC_ALLOC))
2825 info->flags |= DF_TEXTREL;
2833 /* Adjust a symbol defined by a dynamic object and referenced by a
2834 regular object. The current definition is in some section of the
2835 dynamic object, but we're not including those sections. We have to
2836 change the definition to something the rest of the link can
2840 elf64_alpha_adjust_dynamic_symbol (info, h)
2841 struct bfd_link_info *info;
2842 struct elf_link_hash_entry *h;
2846 struct alpha_elf_link_hash_entry *ah;
2848 dynobj = elf_hash_table(info)->dynobj;
2849 ah = (struct alpha_elf_link_hash_entry *)h;
2851 /* Now that we've seen all of the input symbols, finalize our decision
2852 about whether this symbol should get a .plt entry. */
2854 if (alpha_elf_dynamic_symbol_p (h, info)
2855 && ((h->type == STT_FUNC
2856 && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR))
2857 || (h->type == STT_NOTYPE
2858 && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC)
2859 && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)))
2860 /* Don't prevent otherwise valid programs from linking by attempting
2861 to create a new .got entry somewhere. A Correct Solution would be
2862 to add a new .got section to a new object file and let it be merged
2863 somewhere later. But for now don't bother. */
2866 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2868 s = bfd_get_section_by_name(dynobj, ".plt");
2869 if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info))
2872 /* The first bit of the .plt is reserved. */
2873 if (s->_raw_size == 0)
2874 s->_raw_size = PLT_HEADER_SIZE;
2876 h->plt.offset = s->_raw_size;
2877 s->_raw_size += PLT_ENTRY_SIZE;
2879 /* If this symbol is not defined in a regular file, and we are not
2880 generating a shared library, then set the symbol to the location
2881 in the .plt. This is required to make function pointers compare
2882 equal between the normal executable and the shared library. */
2884 && h->root.type != bfd_link_hash_defweak)
2886 h->root.u.def.section = s;
2887 h->root.u.def.value = h->plt.offset;
2890 /* We also need a JMP_SLOT entry in the .rela.plt section. */
2891 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2892 BFD_ASSERT (s != NULL);
2893 s->_raw_size += sizeof (Elf64_External_Rela);
2898 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2900 /* If this is a weak symbol, and there is a real definition, the
2901 processor independent code will have arranged for us to see the
2902 real definition first, and we can just use the same value. */
2903 if (h->weakdef != NULL)
2905 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2906 || h->weakdef->root.type == bfd_link_hash_defweak);
2907 h->root.u.def.section = h->weakdef->root.u.def.section;
2908 h->root.u.def.value = h->weakdef->root.u.def.value;
2912 /* This is a reference to a symbol defined by a dynamic object which
2913 is not a function. The Alpha, since it uses .got entries for all
2914 symbols even in regular objects, does not need the hackery of a
2915 .dynbss section and COPY dynamic relocations. */
2920 /* Symbol versioning can create new symbols, and make our old symbols
2921 indirect to the new ones. Consolidate the got and reloc information
2922 in these situations. */
2925 elf64_alpha_merge_ind_symbols (hi, dummy)
2926 struct alpha_elf_link_hash_entry *hi;
2927 PTR dummy ATTRIBUTE_UNUSED;
2929 struct alpha_elf_link_hash_entry *hs;
2931 if (hi->root.root.type != bfd_link_hash_indirect)
2935 hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link;
2936 } while (hs->root.root.type == bfd_link_hash_indirect);
2938 /* Merge the flags. Whee. */
2940 hs->flags |= hi->flags;
2942 /* Merge the .got entries. Cannibalize the old symbol's list in
2943 doing so, since we don't need it anymore. */
2945 if (hs->got_entries == NULL)
2946 hs->got_entries = hi->got_entries;
2949 struct alpha_elf_got_entry *gi, *gs, *gin, *gsh;
2951 gsh = hs->got_entries;
2952 for (gi = hi->got_entries; gi ; gi = gin)
2955 for (gs = gsh; gs ; gs = gs->next)
2956 if (gi->gotobj == gs->gotobj
2957 && gi->reloc_type == gs->reloc_type
2958 && gi->addend == gs->addend)
2960 gi->use_count += gs->use_count;
2963 gi->next = hs->got_entries;
2964 hs->got_entries = gi;
2968 hi->got_entries = NULL;
2970 /* And similar for the reloc entries. */
2972 if (hs->reloc_entries == NULL)
2973 hs->reloc_entries = hi->reloc_entries;
2976 struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh;
2978 rsh = hs->reloc_entries;
2979 for (ri = hi->reloc_entries; ri ; ri = rin)
2982 for (rs = rsh; rs ; rs = rs->next)
2983 if (ri->rtype == rs->rtype)
2985 rs->count += ri->count;
2988 ri->next = hs->reloc_entries;
2989 hs->reloc_entries = ri;
2993 hi->reloc_entries = NULL;
2998 /* Is it possible to merge two object file's .got tables? */
3001 elf64_alpha_can_merge_gots (a, b)
3004 int total = alpha_elf_tdata (a)->total_got_size;
3007 /* Trivial quick fallout test. */
3008 if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE)
3011 /* By their nature, local .got entries cannot be merged. */
3012 if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE)
3015 /* Failing the common trivial comparison, we must effectively
3016 perform the merge. Not actually performing the merge means that
3017 we don't have to store undo information in case we fail. */
3018 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
3020 struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub);
3021 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
3024 n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
3025 for (i = 0; i < n; ++i)
3027 struct alpha_elf_got_entry *ae, *be;
3028 struct alpha_elf_link_hash_entry *h;
3031 while (h->root.root.type == bfd_link_hash_indirect
3032 || h->root.root.type == bfd_link_hash_warning)
3033 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3035 for (be = h->got_entries; be ; be = be->next)
3037 if (be->use_count == 0)
3039 if (be->gotobj != b)
3042 for (ae = h->got_entries; ae ; ae = ae->next)
3044 && ae->reloc_type == be->reloc_type
3045 && ae->addend == be->addend)
3048 total += alpha_got_entry_size (be->reloc_type);
3049 if (total > MAX_GOT_SIZE)
3059 /* Actually merge two .got tables. */
3062 elf64_alpha_merge_gots (a, b)
3065 int total = alpha_elf_tdata (a)->total_got_size;
3068 /* Remember local expansion. */
3070 int e = alpha_elf_tdata (b)->local_got_size;
3072 alpha_elf_tdata (a)->local_got_size += e;
3075 for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next)
3077 struct alpha_elf_got_entry **local_got_entries;
3078 struct alpha_elf_link_hash_entry **hashes;
3079 Elf_Internal_Shdr *symtab_hdr;
3082 /* Let the local .got entries know they are part of a new subsegment. */
3083 local_got_entries = alpha_elf_tdata (bsub)->local_got_entries;
3084 if (local_got_entries)
3086 n = elf_tdata (bsub)->symtab_hdr.sh_info;
3087 for (i = 0; i < n; ++i)
3089 struct alpha_elf_got_entry *ent;
3090 for (ent = local_got_entries[i]; ent; ent = ent->next)
3095 /* Merge the global .got entries. */
3096 hashes = alpha_elf_sym_hashes (bsub);
3097 symtab_hdr = &elf_tdata (bsub)->symtab_hdr;
3099 n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info;
3100 for (i = 0; i < n; ++i)
3102 struct alpha_elf_got_entry *ae, *be, **pbe, **start;
3103 struct alpha_elf_link_hash_entry *h;
3106 while (h->root.root.type == bfd_link_hash_indirect
3107 || h->root.root.type == bfd_link_hash_warning)
3108 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3110 start = &h->got_entries;
3111 for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next)
3113 if (be->use_count == 0)
3118 if (be->gotobj != b)
3121 for (ae = *start; ae ; ae = ae->next)
3123 && ae->reloc_type == be->reloc_type
3124 && ae->addend == be->addend)
3126 ae->flags |= be->flags;
3127 ae->use_count += be->use_count;
3132 total += alpha_got_entry_size (be->reloc_type);
3138 alpha_elf_tdata (bsub)->gotobj = a;
3140 alpha_elf_tdata (a)->total_got_size = total;
3142 /* Merge the two in_got chains. */
3147 while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL)
3150 alpha_elf_tdata (bsub)->in_got_link_next = b;
3154 /* Calculate the offsets for the got entries. */
3157 elf64_alpha_calc_got_offsets_for_symbol (h, arg)
3158 struct alpha_elf_link_hash_entry *h;
3159 PTR arg ATTRIBUTE_UNUSED;
3161 struct alpha_elf_got_entry *gotent;
3163 if (h->root.root.type == bfd_link_hash_warning)
3164 h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
3166 for (gotent = h->got_entries; gotent; gotent = gotent->next)
3167 if (gotent->use_count > 0)
3170 = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size;
3172 gotent->got_offset = *plge;
3173 *plge += alpha_got_entry_size (gotent->reloc_type);
3180 elf64_alpha_calc_got_offsets (info)
3181 struct bfd_link_info *info;
3183 bfd *i, *got_list = alpha_elf_hash_table(info)->got_list;
3185 /* First, zero out the .got sizes, as we may be recalculating the
3186 .got after optimizing it. */
3187 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
3188 alpha_elf_tdata(i)->got->_raw_size = 0;
3190 /* Next, fill in the offsets for all the global entries. */
3191 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3192 elf64_alpha_calc_got_offsets_for_symbol,
3195 /* Finally, fill in the offsets for the local entries. */
3196 for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next)
3198 bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size;
3201 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
3203 struct alpha_elf_got_entry **local_got_entries, *gotent;
3206 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
3207 if (!local_got_entries)
3210 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
3211 for (gotent = local_got_entries[k]; gotent; gotent = gotent->next)
3212 if (gotent->use_count > 0)
3214 gotent->got_offset = got_offset;
3215 got_offset += alpha_got_entry_size (gotent->reloc_type);
3219 alpha_elf_tdata(i)->got->_raw_size = got_offset;
3220 alpha_elf_tdata(i)->got->_cooked_size = got_offset;
3224 /* Constructs the gots. */
3227 elf64_alpha_size_got_sections (output_bfd, info)
3228 bfd *output_bfd ATTRIBUTE_UNUSED;
3229 struct bfd_link_info *info;
3231 bfd *i, *got_list, *cur_got_obj = NULL;
3232 int something_changed = 0;
3234 got_list = alpha_elf_hash_table (info)->got_list;
3236 /* On the first time through, pretend we have an existing got list
3237 consisting of all of the input files. */
3238 if (got_list == NULL)
3240 for (i = info->input_bfds; i ; i = i->link_next)
3242 bfd *this_got = alpha_elf_tdata (i)->gotobj;
3243 if (this_got == NULL)
3246 /* We are assuming no merging has yet ocurred. */
3247 BFD_ASSERT (this_got == i);
3249 if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE)
3251 /* Yikes! A single object file has too many entries. */
3252 (*_bfd_error_handler)
3253 (_("%s: .got subsegment exceeds 64K (size %d)"),
3254 bfd_archive_filename (i),
3255 alpha_elf_tdata (this_got)->total_got_size);
3259 if (got_list == NULL)
3260 got_list = this_got;
3262 alpha_elf_tdata(cur_got_obj)->got_link_next = this_got;
3263 cur_got_obj = this_got;
3266 /* Strange degenerate case of no got references. */
3267 if (got_list == NULL)
3270 alpha_elf_hash_table (info)->got_list = got_list;
3272 /* Force got offsets to be recalculated. */
3273 something_changed = 1;
3276 cur_got_obj = got_list;
3277 i = alpha_elf_tdata(cur_got_obj)->got_link_next;
3280 if (elf64_alpha_can_merge_gots (cur_got_obj, i))
3282 elf64_alpha_merge_gots (cur_got_obj, i);
3283 i = alpha_elf_tdata(i)->got_link_next;
3284 alpha_elf_tdata(cur_got_obj)->got_link_next = i;
3285 something_changed = 1;
3290 i = alpha_elf_tdata(i)->got_link_next;
3294 /* Once the gots have been merged, fill in the got offsets for
3295 everything therein. */
3296 if (1 || something_changed)
3297 elf64_alpha_calc_got_offsets (info);
3303 elf64_alpha_always_size_sections (output_bfd, info)
3305 struct bfd_link_info *info;
3309 if (info->relocateable)
3312 /* First, take care of the indirect symbols created by versioning. */
3313 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3314 elf64_alpha_merge_ind_symbols,
3317 if (!elf64_alpha_size_got_sections (output_bfd, info))
3320 /* Allocate space for all of the .got subsections. */
3321 i = alpha_elf_hash_table (info)->got_list;
3322 for ( ; i ; i = alpha_elf_tdata(i)->got_link_next)
3324 asection *s = alpha_elf_tdata(i)->got;
3325 if (s->_raw_size > 0)
3327 s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size);
3328 if (s->contents == NULL)
3336 /* The number of dynamic relocations required by a static relocation. */
3339 alpha_dynamic_entries_for_reloc (r_type, dynamic, shared)
3340 int r_type, dynamic, shared;
3344 /* May appear in GOT entries. */
3346 return (dynamic ? 2 : shared ? 1 : 0);
3347 case R_ALPHA_TLSLDM:
3349 case R_ALPHA_LITERAL:
3350 return dynamic || shared;
3351 case R_ALPHA_GOTDTPREL:
3352 case R_ALPHA_GOTTPREL:
3355 /* May appear in data sections. */
3356 case R_ALPHA_REFLONG:
3357 case R_ALPHA_REFQUAD:
3358 return dynamic || shared;
3359 case R_ALPHA_SREL64:
3360 case R_ALPHA_TPREL64:
3363 /* Everything else is illegal. We'll issue an error during
3364 relocate_section. */
3370 /* Work out the sizes of the dynamic relocation entries. */
3373 elf64_alpha_calc_dynrel_sizes (h, info)
3374 struct alpha_elf_link_hash_entry *h;
3375 struct bfd_link_info *info;
3378 struct alpha_elf_reloc_entry *relent;
3379 struct alpha_elf_got_entry *gotent;
3382 if (h->root.root.type == bfd_link_hash_warning)
3383 h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
3385 /* If the symbol was defined as a common symbol in a regular object
3386 file, and there was no definition in any dynamic object, then the
3387 linker will have allocated space for the symbol in a common
3388 section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been
3389 set. This is done for dynamic symbols in
3390 elf_adjust_dynamic_symbol but this is not done for non-dynamic
3391 symbols, somehow. */
3392 if (((h->root.elf_link_hash_flags
3393 & (ELF_LINK_HASH_DEF_REGULAR
3394 | ELF_LINK_HASH_REF_REGULAR
3395 | ELF_LINK_HASH_DEF_DYNAMIC))
3396 == ELF_LINK_HASH_REF_REGULAR)
3397 && (h->root.root.type == bfd_link_hash_defined
3398 || h->root.root.type == bfd_link_hash_defweak)
3399 && !(h->root.root.u.def.section->owner->flags & DYNAMIC))
3401 h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3404 /* If the symbol is dynamic, we'll need all the relocations in their
3405 natural form. If this is a shared object, and it has been forced
3406 local, we'll need the same number of RELATIVE relocations. */
3408 dynamic = alpha_elf_dynamic_symbol_p (&h->root, info);
3410 for (relent = h->reloc_entries; relent; relent = relent->next)
3412 entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic,
3416 relent->srel->_raw_size +=
3417 entries * sizeof (Elf64_External_Rela) * relent->count;
3418 if (relent->reltext)
3419 info->flags |= DT_TEXTREL;
3424 for (gotent = h->got_entries; gotent ; gotent = gotent->next)
3425 entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type,
3426 dynamic, info->shared);
3428 /* If we are using a .plt entry, subtract one, as the first
3429 reference uses a .rela.plt entry instead. */
3430 if (h->root.plt.offset != MINUS_ONE)
3435 bfd *dynobj = elf_hash_table(info)->dynobj;
3436 asection *srel = bfd_get_section_by_name (dynobj, ".rela.got");
3437 BFD_ASSERT (srel != NULL);
3438 srel->_raw_size += sizeof (Elf64_External_Rela) * entries;
3444 /* Set the sizes of the dynamic sections. */
3447 elf64_alpha_size_dynamic_sections (output_bfd, info)
3448 bfd *output_bfd ATTRIBUTE_UNUSED;
3449 struct bfd_link_info *info;
3455 dynobj = elf_hash_table(info)->dynobj;
3456 BFD_ASSERT(dynobj != NULL);
3458 if (elf_hash_table (info)->dynamic_sections_created)
3463 /* Set the contents of the .interp section to the interpreter. */
3466 s = bfd_get_section_by_name (dynobj, ".interp");
3467 BFD_ASSERT (s != NULL);
3468 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3469 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3472 /* Now that we've seen all of the input files, we can decide which
3473 symbols need dynamic relocation entries and which don't. We've
3474 collected information in check_relocs that we can now apply to
3475 size the dynamic relocation sections. */
3476 alpha_elf_link_hash_traverse (alpha_elf_hash_table (info),
3477 elf64_alpha_calc_dynrel_sizes,
3480 /* Shared libraries often require RELATIVE relocs, and some relocs
3481 require attention for the main application as well. */
3484 for (i = alpha_elf_hash_table(info)->got_list;
3485 i ; i = alpha_elf_tdata(i)->got_link_next)
3489 for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next)
3491 struct alpha_elf_got_entry **local_got_entries, *gotent;
3494 local_got_entries = alpha_elf_tdata(j)->local_got_entries;
3495 if (!local_got_entries)
3498 for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k)
3499 for (gotent = local_got_entries[k];
3500 gotent ; gotent = gotent->next)
3501 if (gotent->use_count > 0)
3502 entries += (alpha_dynamic_entries_for_reloc
3503 (gotent->reloc_type, 0, info->shared));
3509 s = bfd_get_section_by_name (dynobj, ".rela.got");
3510 BFD_ASSERT (s != NULL);
3511 s->_raw_size += sizeof (Elf64_External_Rela) * entries;
3514 /* else we're not dynamic and by definition we don't need such things. */
3516 /* The check_relocs and adjust_dynamic_symbol entry points have
3517 determined the sizes of the various dynamic sections. Allocate
3520 for (s = dynobj->sections; s != NULL; s = s->next)
3525 if (!(s->flags & SEC_LINKER_CREATED))
3528 /* It's OK to base decisions on the section name, because none
3529 of the dynobj section names depend upon the input files. */
3530 name = bfd_get_section_name (dynobj, s);
3532 /* If we don't need this section, strip it from the output file.
3533 This is to handle .rela.bss and .rela.plt. We must create it
3534 in create_dynamic_sections, because it must be created before
3535 the linker maps input sections to output sections. The
3536 linker does that before adjust_dynamic_symbol is called, and
3537 it is that function which decides whether anything needs to
3538 go into these sections. */
3542 if (strncmp (name, ".rela", 5) == 0)
3544 strip = (s->_raw_size == 0);
3548 if (strcmp(name, ".rela.plt") == 0)
3551 /* We use the reloc_count field as a counter if we need
3552 to copy relocs into the output file. */
3556 else if (strcmp (name, ".plt") != 0)
3558 /* It's not one of our dynamic sections, so don't allocate space. */
3563 _bfd_strip_section_from_output (info, s);
3566 /* Allocate memory for the section contents. */
3567 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
3568 if (s->contents == NULL && s->_raw_size != 0)
3573 if (elf_hash_table (info)->dynamic_sections_created)
3575 /* Add some entries to the .dynamic section. We fill in the
3576 values later, in elf64_alpha_finish_dynamic_sections, but we
3577 must add the entries now so that we get the correct size for
3578 the .dynamic section. The DT_DEBUG entry is filled in by the
3579 dynamic linker and used by the debugger. */
3580 #define add_dynamic_entry(TAG, VAL) \
3581 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
3585 if (!add_dynamic_entry (DT_DEBUG, 0))
3589 if (!add_dynamic_entry (DT_PLTGOT, 0))
3594 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3595 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3596 || !add_dynamic_entry (DT_JMPREL, 0))
3600 if (!add_dynamic_entry (DT_RELA, 0)
3601 || !add_dynamic_entry (DT_RELASZ, 0)
3602 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
3605 if (info->flags & DF_TEXTREL)
3607 if (!add_dynamic_entry (DT_TEXTREL, 0))
3611 #undef add_dynamic_entry
3616 /* Relocate an Alpha ELF section. */
3619 elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section,
3620 contents, relocs, local_syms, local_sections)
3622 struct bfd_link_info *info;
3624 asection *input_section;
3626 Elf_Internal_Rela *relocs;
3627 Elf_Internal_Sym *local_syms;
3628 asection **local_sections;
3630 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3631 Elf_Internal_Rela *rel;
3632 Elf_Internal_Rela *relend;
3633 struct elf_link_tls_segment *tls_segment = NULL;
3634 asection *sgot = NULL, *srel = NULL, *srelgot = NULL;
3635 bfd *dynobj = NULL, *gotobj = NULL;
3636 bfd_vma gp = 0, tp_base = 0, dtp_base = 0;
3637 boolean ret_val = true;
3639 if (!info->relocateable)
3643 dynobj = elf_hash_table (info)->dynobj;
3645 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3647 name = (bfd_elf_string_from_elf_section
3648 (input_bfd, elf_elfheader(input_bfd)->e_shstrndx,
3649 elf_section_data(input_section)->rel_hdr.sh_name));
3650 BFD_ASSERT(name != NULL);
3651 srel = bfd_get_section_by_name (dynobj, name);
3653 /* Find the gp value for this input bfd. */
3654 gotobj = alpha_elf_tdata (input_bfd)->gotobj;
3657 sgot = alpha_elf_tdata (gotobj)->got;
3658 gp = _bfd_get_gp_value (gotobj);
3661 gp = (sgot->output_section->vma
3662 + sgot->output_offset
3664 _bfd_set_gp_value (gotobj, gp);
3668 tls_segment = elf_hash_table (info)->tls_segment;
3671 /* This is PT_TLS segment p_vaddr. */
3672 dtp_base = tls_segment->start;
3674 /* Main program TLS (whose template starts at PT_TLS p_vaddr)
3675 is assigned offset round(16, PT_TLS p_align). */
3676 tp_base = dtp_base - align_power (16, tls_segment->align);
3681 relend = relocs + input_section->reloc_count;
3682 for (; rel < relend; rel++)
3684 struct alpha_elf_link_hash_entry *h;
3685 struct alpha_elf_got_entry *gotent;
3686 bfd_reloc_status_type r;
3687 reloc_howto_type *howto;
3688 unsigned long r_symndx;
3689 Elf_Internal_Sym *sym;
3693 boolean dynamic_symbol_p;
3694 boolean undef_weak_ref;
3695 unsigned long r_type;
3697 r_type = ELF64_R_TYPE(rel->r_info);
3698 if (r_type >= R_ALPHA_max)
3700 (*_bfd_error_handler)
3701 (_("%s: unknown relocation type %d"),
3702 bfd_archive_filename (input_bfd), (int)r_type);
3703 bfd_set_error (bfd_error_bad_value);
3708 howto = elf64_alpha_howto_table + r_type;
3709 r_symndx = ELF64_R_SYM(rel->r_info);
3711 if (info->relocateable)
3713 /* This is a relocateable link. We don't have to change
3714 anything, unless the reloc is against a section symbol,
3715 in which case we have to adjust according to where the
3716 section symbol winds up in the output section. */
3718 /* The symbol associated with GPDISP and LITUSE is
3719 immaterial. Only the addend is significant. */
3720 if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE)
3723 if (r_symndx < symtab_hdr->sh_info)
3725 sym = local_syms + r_symndx;
3726 if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
3728 sec = local_sections[r_symndx];
3729 rel->r_addend += sec->output_offset + sym->st_value;
3736 /* This is a final link. */
3741 undef_weak_ref = false;
3743 if (r_symndx < symtab_hdr->sh_info)
3745 sym = local_syms + r_symndx;
3746 sec = local_sections[r_symndx];
3747 value = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
3749 gotent = alpha_elf_tdata(input_bfd)->local_got_entries[r_symndx];
3751 /* Need to adjust local GOT entries' addends for SEC_MERGE
3752 unless it has been done already. */
3753 if ((sec->flags & SEC_MERGE)
3754 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
3755 && (elf_section_data (sec)->sec_info_type
3756 == ELF_INFO_TYPE_MERGE)
3757 && !gotent->reloc_xlated)
3759 struct alpha_elf_got_entry *ent;
3762 for (ent = gotent; ent; ent = ent->next)
3764 ent->reloc_xlated = 1;
3765 if (ent->use_count == 0)
3769 _bfd_merged_section_offset (output_bfd, &msec,
3770 elf_section_data (sec)->
3772 sym->st_value + ent->addend,
3774 ent->addend -= sym->st_value;
3775 ent->addend += msec->output_section->vma
3776 + msec->output_offset
3777 - sec->output_section->vma
3778 - sec->output_offset;
3782 dynamic_symbol_p = false;
3786 h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info];
3788 while (h->root.root.type == bfd_link_hash_indirect
3789 || h->root.root.type == bfd_link_hash_warning)
3790 h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link;
3793 if (h->root.root.type == bfd_link_hash_defined
3794 || h->root.root.type == bfd_link_hash_defweak)
3796 sec = h->root.root.u.def.section;
3798 /* Detect the cases that sym_sec->output_section is
3799 expected to be NULL -- all cases in which the symbol
3800 is defined in another shared module. This includes
3801 PLT relocs for which we've created a PLT entry and
3802 other relocs for which we're prepared to create
3803 dynamic relocations. */
3804 /* ??? Just accept it NULL and continue. */
3806 if (sec->output_section != NULL)
3807 value = (h->root.root.u.def.value
3808 + sec->output_section->vma
3809 + sec->output_offset);
3811 else if (h->root.root.type == bfd_link_hash_undefweak)
3812 undef_weak_ref = true;
3813 else if (info->shared
3814 && (!info->symbolic || info->allow_shlib_undefined)
3815 && !info->no_undefined
3816 && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
3820 if (!((*info->callbacks->undefined_symbol)
3821 (info, h->root.root.root.string, input_bfd,
3822 input_section, rel->r_offset,
3823 (!info->shared || info->no_undefined
3824 || ELF_ST_VISIBILITY (h->root.other)))))
3830 dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info);
3831 gotent = h->got_entries;
3834 addend = rel->r_addend;
3837 /* Search for the proper got entry. */
3838 for (; gotent ; gotent = gotent->next)
3839 if (gotent->gotobj == gotobj
3840 && gotent->reloc_type == r_type
3841 && gotent->addend == addend)
3846 case R_ALPHA_GPDISP:
3848 bfd_byte *p_ldah, *p_lda;
3850 BFD_ASSERT(gp != 0);
3852 value = (input_section->output_section->vma
3853 + input_section->output_offset
3856 p_ldah = contents + rel->r_offset;
3857 p_lda = p_ldah + rel->r_addend;
3859 r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value,
3864 case R_ALPHA_LITERAL:
3865 BFD_ASSERT(sgot != NULL);
3866 BFD_ASSERT(gp != 0);
3867 BFD_ASSERT(gotent != NULL);
3868 BFD_ASSERT(gotent->use_count >= 1);
3870 if (!gotent->reloc_done)
3872 gotent->reloc_done = 1;
3874 bfd_put_64 (output_bfd, value,
3875 sgot->contents + gotent->got_offset);
3877 /* If the symbol has been forced local, output a
3878 RELATIVE reloc, otherwise it will be handled in
3879 finish_dynamic_symbol. */
3880 if (info->shared && !dynamic_symbol_p)
3882 Elf_Internal_Rela outrel;
3884 BFD_ASSERT(srelgot != NULL);
3886 outrel.r_offset = (sgot->output_section->vma
3887 + sgot->output_offset
3888 + gotent->got_offset);
3889 outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE);
3890 outrel.r_addend = value;
3892 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
3893 ((Elf64_External_Rela *)
3895 + srelgot->reloc_count++);
3896 BFD_ASSERT (sizeof (Elf64_External_Rela)
3897 * srelgot->reloc_count
3898 <= srelgot->_cooked_size);
3902 value = (sgot->output_section->vma
3903 + sgot->output_offset
3904 + gotent->got_offset);
3908 case R_ALPHA_GPREL16:
3909 case R_ALPHA_GPREL32:
3910 case R_ALPHA_GPRELLOW:
3911 if (dynamic_symbol_p)
3913 (*_bfd_error_handler)
3914 (_("%s: gp-relative relocation against dynamic symbol %s"),
3915 bfd_archive_filename (input_bfd), h->root.root.root.string);
3918 BFD_ASSERT(gp != 0);
3922 case R_ALPHA_GPRELHIGH:
3923 if (dynamic_symbol_p)
3925 (*_bfd_error_handler)
3926 (_("%s: gp-relative relocation against dynamic symbol %s"),
3927 bfd_archive_filename (input_bfd), h->root.root.root.string);
3930 BFD_ASSERT(gp != 0);
3932 value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1);
3936 /* A call to a dynamic symbol is definitely out of range of
3937 the 16-bit displacement. Don't bother writing anything. */
3938 if (dynamic_symbol_p)
3943 /* The regular PC-relative stuff measures from the start of
3944 the instruction rather than the end. */
3948 case R_ALPHA_BRADDR:
3949 if (dynamic_symbol_p)
3951 (*_bfd_error_handler)
3952 (_("%s: pc-relative relocation against dynamic symbol %s"),
3953 bfd_archive_filename (input_bfd), h->root.root.root.string);
3956 /* The regular PC-relative stuff measures from the start of
3957 the instruction rather than the end. */
3966 /* The regular PC-relative stuff measures from the start of
3967 the instruction rather than the end. */
3970 /* The source and destination gp must be the same. Note that
3971 the source will always have an assigned gp, since we forced
3972 one in check_relocs, but that the destination may not, as
3973 it might not have had any relocations at all. Also take
3974 care not to crash if H is an undefined symbol. */
3975 if (h != NULL && sec != NULL
3976 && alpha_elf_tdata (sec->owner)->gotobj
3977 && gotobj != alpha_elf_tdata (sec->owner)->gotobj)
3979 (*_bfd_error_handler)
3980 (_("%s: change in gp: BRSGP %s"),
3981 bfd_archive_filename (input_bfd), h->root.root.root.string);
3985 /* The symbol should be marked either NOPV or STD_GPLOAD. */
3987 other = h->root.other;
3989 other = sym->st_other;
3990 switch (other & STO_ALPHA_STD_GPLOAD)
3992 case STO_ALPHA_NOPV:
3994 case STO_ALPHA_STD_GPLOAD:
3999 name = h->root.root.root.string;
4002 name = (bfd_elf_string_from_elf_section
4003 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4005 name = _("<unknown>");
4006 else if (name[0] == 0)
4007 name = bfd_section_name (input_bfd, sec);
4009 (*_bfd_error_handler)
4010 (_("%s: !samegp reloc against symbol without .prologue: %s"),
4011 bfd_archive_filename (input_bfd), name);
4019 case R_ALPHA_REFLONG:
4020 case R_ALPHA_REFQUAD:
4021 case R_ALPHA_DTPREL64:
4022 case R_ALPHA_TPREL64:
4024 Elf_Internal_Rela outrel;
4026 /* Careful here to remember RELATIVE relocations for global
4027 variables for symbolic shared objects. */
4029 if (dynamic_symbol_p)
4031 BFD_ASSERT(h->root.dynindx != -1);
4032 outrel.r_info = ELF64_R_INFO (h->root.dynindx, r_type);
4033 outrel.r_addend = addend;
4034 addend = 0, value = 0;
4036 else if (r_type == R_ALPHA_DTPREL64)
4038 BFD_ASSERT(tls_segment != NULL);
4042 else if (r_type == R_ALPHA_TPREL64)
4044 BFD_ASSERT(tls_segment != NULL);
4048 else if (info->shared
4050 && (input_section->flags & SEC_ALLOC))
4052 if (r_type == R_ALPHA_REFLONG)
4054 (*_bfd_error_handler)
4055 (_("%s: unhandled dynamic relocation against %s"),
4056 bfd_archive_filename (input_bfd),
4057 h->root.root.root.string);
4060 outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE);
4061 outrel.r_addend = value;
4066 BFD_ASSERT(srel != NULL);
4069 _bfd_elf_section_offset (output_bfd, info, input_section,
4071 if ((outrel.r_offset | 1) != (bfd_vma) -1)
4072 outrel.r_offset += (input_section->output_section->vma
4073 + input_section->output_offset);
4075 memset (&outrel, 0, sizeof outrel);
4077 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4078 ((Elf64_External_Rela *)
4080 + srel->reloc_count++);
4081 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
4082 <= srel->_cooked_size);
4086 case R_ALPHA_SREL16:
4087 case R_ALPHA_SREL32:
4088 case R_ALPHA_SREL64:
4089 if (dynamic_symbol_p)
4091 (*_bfd_error_handler)
4092 (_("%s: pc-relative relocation against dynamic symbol %s"),
4093 bfd_archive_filename (input_bfd), h->root.root.root.string);
4097 /* ??? .eh_frame references to discarded sections will be smashed
4098 to relocations against SHN_UNDEF. The .eh_frame format allows
4099 NULL to be encoded as 0 in any format, so this works here. */
4101 howto = (elf64_alpha_howto_table
4102 + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG));
4105 case R_ALPHA_TLSLDM:
4106 /* Ignore the symbol for the relocation. The result is always
4107 the current module. */
4108 dynamic_symbol_p = 0;
4112 if (!gotent->reloc_done)
4114 gotent->reloc_done = 1;
4116 /* Note that the module index for the main program is 1. */
4117 bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p,
4118 sgot->contents + gotent->got_offset);
4120 /* If the symbol has been forced local, output a
4121 DTPMOD64 reloc, otherwise it will be handled in
4122 finish_dynamic_symbol. */
4123 if (info->shared && !dynamic_symbol_p)
4125 Elf_Internal_Rela outrel;
4127 BFD_ASSERT(srelgot != NULL);
4129 outrel.r_offset = (sgot->output_section->vma
4130 + sgot->output_offset
4131 + gotent->got_offset);
4132 /* ??? Proper dynindx here. */
4133 outrel.r_info = ELF64_R_INFO (0, R_ALPHA_DTPMOD64);
4134 outrel.r_addend = 0;
4136 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4137 ((Elf64_External_Rela *)
4139 + srelgot->reloc_count++);
4140 BFD_ASSERT (sizeof (Elf64_External_Rela)
4141 * srelgot->reloc_count
4142 <= srelgot->_cooked_size);
4145 if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM)
4149 BFD_ASSERT(tls_segment != NULL);
4152 bfd_put_64 (output_bfd, value,
4153 sgot->contents + gotent->got_offset + 8);
4156 value = (sgot->output_section->vma
4157 + sgot->output_offset
4158 + gotent->got_offset);
4162 case R_ALPHA_DTPRELHI:
4163 case R_ALPHA_DTPRELLO:
4164 case R_ALPHA_DTPREL16:
4165 if (dynamic_symbol_p)
4167 (*_bfd_error_handler)
4168 (_("%s: dtp-relative relocation against dynamic symbol %s"),
4169 bfd_archive_filename (input_bfd), h->root.root.root.string);
4172 BFD_ASSERT(tls_segment != NULL);
4176 case R_ALPHA_TPRELHI:
4177 case R_ALPHA_TPRELLO:
4178 case R_ALPHA_TPREL16:
4179 if (dynamic_symbol_p)
4181 (*_bfd_error_handler)
4182 (_("%s: tp-relative relocation against dynamic symbol %s"),
4183 bfd_archive_filename (input_bfd), h->root.root.root.string);
4186 BFD_ASSERT(tls_segment != NULL);
4190 case R_ALPHA_GOTDTPREL:
4191 case R_ALPHA_GOTTPREL:
4192 BFD_ASSERT(sgot != NULL);
4193 BFD_ASSERT(gp != 0);
4194 BFD_ASSERT(gotent != NULL);
4195 BFD_ASSERT(gotent->use_count >= 1);
4197 if (!gotent->reloc_done)
4199 gotent->reloc_done = 1;
4201 if (dynamic_symbol_p)
4205 BFD_ASSERT(tls_segment != NULL);
4206 value -= (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base);
4208 bfd_put_64 (output_bfd, value,
4209 sgot->contents + gotent->got_offset);
4212 value = (sgot->output_section->vma
4213 + sgot->output_offset
4214 + gotent->got_offset);
4220 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4221 contents, rel->r_offset, value, 0);
4230 case bfd_reloc_overflow:
4234 /* Don't warn if the overflow is due to pc relative reloc
4235 against discarded section. Section optimization code should
4238 if (r_symndx < symtab_hdr->sh_info
4239 && sec != NULL && howto->pc_relative
4240 && elf_discarded_section (sec))
4244 name = h->root.root.root.string;
4247 name = (bfd_elf_string_from_elf_section
4248 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4252 name = bfd_section_name (input_bfd, sec);
4254 if (! ((*info->callbacks->reloc_overflow)
4255 (info, name, howto->name, (bfd_vma) 0,
4256 input_bfd, input_section, rel->r_offset)))
4262 case bfd_reloc_outofrange:
4270 /* Finish up dynamic symbol handling. We set the contents of various
4271 dynamic sections here. */
4274 elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym)
4276 struct bfd_link_info *info;
4277 struct elf_link_hash_entry *h;
4278 Elf_Internal_Sym *sym;
4280 bfd *dynobj = elf_hash_table(info)->dynobj;
4282 if (h->plt.offset != MINUS_ONE)
4284 /* Fill in the .plt entry for this symbol. */
4285 asection *splt, *sgot, *srel;
4286 Elf_Internal_Rela outrel;
4287 bfd_vma got_addr, plt_addr;
4289 struct alpha_elf_got_entry *gotent;
4291 BFD_ASSERT (h->dynindx != -1);
4293 /* The first .got entry will be updated by the .plt with the
4294 address of the target function. */
4295 gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
4296 BFD_ASSERT (gotent && gotent->addend == 0);
4298 splt = bfd_get_section_by_name (dynobj, ".plt");
4299 BFD_ASSERT (splt != NULL);
4300 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4301 BFD_ASSERT (srel != NULL);
4302 sgot = alpha_elf_tdata (gotent->gotobj)->got;
4303 BFD_ASSERT (sgot != NULL);
4305 got_addr = (sgot->output_section->vma
4306 + sgot->output_offset
4307 + gotent->got_offset);
4308 plt_addr = (splt->output_section->vma
4309 + splt->output_offset
4312 plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
4314 /* Fill in the entry in the procedure linkage table. */
4316 bfd_vma insn1, insn2, insn3;
4318 insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff);
4319 insn2 = PLT_ENTRY_WORD2;
4320 insn3 = PLT_ENTRY_WORD3;
4322 bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset);
4323 bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4);
4324 bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8);
4327 /* Fill in the entry in the .rela.plt section. */
4328 outrel.r_offset = got_addr;
4329 outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT);
4330 outrel.r_addend = 0;
4332 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4333 ((Elf64_External_Rela *)srel->contents
4336 if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4338 /* Mark the symbol as undefined, rather than as defined in the
4339 .plt section. Leave the value alone. */
4340 sym->st_shndx = SHN_UNDEF;
4343 /* Fill in the entries in the .got. */
4344 bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset);
4346 /* Subsequent .got entries will continue to bounce through the .plt. */
4349 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4350 BFD_ASSERT (! info->shared || srel != NULL);
4352 gotent = gotent->next;
4355 sgot = alpha_elf_tdata(gotent->gotobj)->got;
4356 BFD_ASSERT(sgot != NULL);
4357 BFD_ASSERT(gotent->addend == 0);
4359 bfd_put_64 (output_bfd, plt_addr,
4360 sgot->contents + gotent->got_offset);
4364 outrel.r_offset = (sgot->output_section->vma
4365 + sgot->output_offset
4366 + gotent->got_offset);
4367 outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE);
4368 outrel.r_addend = plt_addr;
4370 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4371 ((Elf64_External_Rela *)
4373 + srel->reloc_count++);
4374 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
4375 <= srel->_cooked_size);
4378 gotent = gotent->next;
4380 while (gotent != NULL);
4383 else if (alpha_elf_dynamic_symbol_p (h, info))
4385 /* Fill in the dynamic relocations for this symbol's .got entries. */
4387 Elf_Internal_Rela outrel;
4388 struct alpha_elf_got_entry *gotent;
4390 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4391 BFD_ASSERT (srel != NULL);
4393 for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries;
4395 gotent = gotent->next)
4397 asection *sgot = alpha_elf_tdata (gotent->gotobj)->got;
4400 outrel.r_offset = (sgot->output_section->vma
4401 + sgot->output_offset
4402 + gotent->got_offset);
4404 r_type = gotent->reloc_type;
4407 case R_ALPHA_LITERAL:
4408 r_type = R_ALPHA_GLOB_DAT;
4411 r_type = R_ALPHA_DTPMOD64;
4413 case R_ALPHA_GOTDTPREL:
4414 r_type = R_ALPHA_DTPREL64;
4416 case R_ALPHA_GOTTPREL:
4417 r_type = R_ALPHA_TPREL64;
4419 case R_ALPHA_TLSLDM:
4424 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
4425 outrel.r_addend = gotent->addend;
4427 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4428 ((Elf64_External_Rela *)srel->contents
4429 + srel->reloc_count++));
4431 if (gotent->reloc_type == R_ALPHA_TLSGD)
4433 outrel.r_offset += 8;
4434 outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_DTPREL64);
4436 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
4437 ((Elf64_External_Rela *)srel->contents
4438 + srel->reloc_count++));
4441 BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count
4442 <= srel->_cooked_size);
4446 /* Mark some specially defined symbols as absolute. */
4447 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
4448 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
4449 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4450 sym->st_shndx = SHN_ABS;
4455 /* Finish up the dynamic sections. */
4458 elf64_alpha_finish_dynamic_sections (output_bfd, info)
4460 struct bfd_link_info *info;
4465 dynobj = elf_hash_table (info)->dynobj;
4466 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4468 if (elf_hash_table (info)->dynamic_sections_created)
4471 Elf64_External_Dyn *dyncon, *dynconend;
4473 splt = bfd_get_section_by_name (dynobj, ".plt");
4474 BFD_ASSERT (splt != NULL && sdyn != NULL);
4476 dyncon = (Elf64_External_Dyn *) sdyn->contents;
4477 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4478 for (; dyncon < dynconend; dyncon++)
4480 Elf_Internal_Dyn dyn;
4484 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4499 /* My interpretation of the TIS v1.1 ELF document indicates
4500 that RELASZ should not include JMPREL. This is not what
4501 the rest of the BFD does. It is, however, what the
4502 glibc ld.so wants. Do this fixup here until we found
4503 out who is right. */
4504 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4508 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
4513 s = bfd_get_section_by_name (output_bfd, name);
4514 dyn.d_un.d_ptr = (s ? s->vma : 0);
4518 s = bfd_get_section_by_name (output_bfd, name);
4520 (s->_cooked_size ? s->_cooked_size : s->_raw_size);
4524 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
4527 /* Initialize the PLT0 entry */
4528 if (splt->_raw_size > 0)
4530 bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents);
4531 bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4);
4532 bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8);
4533 bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12);
4535 /* The next two words will be filled in by ld.so */
4536 bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16);
4537 bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24);
4539 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
4547 /* We need to use a special link routine to handle the .mdebug section.
4548 We need to merge all instances of these sections together, not write
4549 them all out sequentially. */
4552 elf64_alpha_final_link (abfd, info)
4554 struct bfd_link_info *info;
4557 struct bfd_link_order *p;
4558 asection *mdebug_sec;
4559 struct ecoff_debug_info debug;
4560 const struct ecoff_debug_swap *swap
4561 = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
4562 HDRR *symhdr = &debug.symbolic_header;
4563 PTR mdebug_handle = NULL;
4565 /* Go through the sections and collect the mdebug information. */
4567 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4569 if (strcmp (o->name, ".mdebug") == 0)
4571 struct extsym_info einfo;
4573 /* We have found the .mdebug section in the output file.
4574 Look through all the link_orders comprising it and merge
4575 the information together. */
4576 symhdr->magic = swap->sym_magic;
4577 /* FIXME: What should the version stamp be? */
4579 symhdr->ilineMax = 0;
4583 symhdr->isymMax = 0;
4584 symhdr->ioptMax = 0;
4585 symhdr->iauxMax = 0;
4587 symhdr->issExtMax = 0;
4590 symhdr->iextMax = 0;
4592 /* We accumulate the debugging information itself in the
4593 debug_info structure. */
4595 debug.external_dnr = NULL;
4596 debug.external_pdr = NULL;
4597 debug.external_sym = NULL;
4598 debug.external_opt = NULL;
4599 debug.external_aux = NULL;
4601 debug.ssext = debug.ssext_end = NULL;
4602 debug.external_fdr = NULL;
4603 debug.external_rfd = NULL;
4604 debug.external_ext = debug.external_ext_end = NULL;
4606 mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
4607 if (mdebug_handle == (PTR) NULL)
4616 static const char * const name[] =
4618 ".text", ".init", ".fini", ".data",
4619 ".rodata", ".sdata", ".sbss", ".bss"
4621 static const int sc[] = { scText, scInit, scFini, scData,
4622 scRData, scSData, scSBss, scBss };
4625 esym.cobol_main = 0;
4629 esym.asym.iss = issNil;
4630 esym.asym.st = stLocal;
4631 esym.asym.reserved = 0;
4632 esym.asym.index = indexNil;
4633 for (i = 0; i < 8; i++)
4635 esym.asym.sc = sc[i];
4636 s = bfd_get_section_by_name (abfd, name[i]);
4639 esym.asym.value = s->vma;
4640 last = s->vma + s->_raw_size;
4643 esym.asym.value = last;
4645 if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
4651 for (p = o->link_order_head;
4652 p != (struct bfd_link_order *) NULL;
4655 asection *input_section;
4657 const struct ecoff_debug_swap *input_swap;
4658 struct ecoff_debug_info input_debug;
4662 if (p->type != bfd_indirect_link_order)
4664 if (p->type == bfd_data_link_order)
4669 input_section = p->u.indirect.section;
4670 input_bfd = input_section->owner;
4672 if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
4673 || (get_elf_backend_data (input_bfd)
4674 ->elf_backend_ecoff_debug_swap) == NULL)
4676 /* I don't know what a non ALPHA ELF bfd would be
4677 doing with a .mdebug section, but I don't really
4678 want to deal with it. */
4682 input_swap = (get_elf_backend_data (input_bfd)
4683 ->elf_backend_ecoff_debug_swap);
4685 BFD_ASSERT (p->size == input_section->_raw_size);
4687 /* The ECOFF linking code expects that we have already
4688 read in the debugging information and set up an
4689 ecoff_debug_info structure, so we do that now. */
4690 if (!elf64_alpha_read_ecoff_info (input_bfd, input_section,
4694 if (! (bfd_ecoff_debug_accumulate
4695 (mdebug_handle, abfd, &debug, swap, input_bfd,
4696 &input_debug, input_swap, info)))
4699 /* Loop through the external symbols. For each one with
4700 interesting information, try to find the symbol in
4701 the linker global hash table and save the information
4702 for the output external symbols. */
4703 eraw_src = input_debug.external_ext;
4704 eraw_end = (eraw_src
4705 + (input_debug.symbolic_header.iextMax
4706 * input_swap->external_ext_size));
4708 eraw_src < eraw_end;
4709 eraw_src += input_swap->external_ext_size)
4713 struct alpha_elf_link_hash_entry *h;
4715 (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
4716 if (ext.asym.sc == scNil
4717 || ext.asym.sc == scUndefined
4718 || ext.asym.sc == scSUndefined)
4721 name = input_debug.ssext + ext.asym.iss;
4722 h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info),
4723 name, false, false, true);
4724 if (h == NULL || h->esym.ifd != -2)
4730 < input_debug.symbolic_header.ifdMax);
4731 ext.ifd = input_debug.ifdmap[ext.ifd];
4737 /* Free up the information we just read. */
4738 free (input_debug.line);
4739 free (input_debug.external_dnr);
4740 free (input_debug.external_pdr);
4741 free (input_debug.external_sym);
4742 free (input_debug.external_opt);
4743 free (input_debug.external_aux);
4744 free (input_debug.ss);
4745 free (input_debug.ssext);
4746 free (input_debug.external_fdr);
4747 free (input_debug.external_rfd);
4748 free (input_debug.external_ext);
4750 /* Hack: reset the SEC_HAS_CONTENTS flag so that
4751 elf_link_input_bfd ignores this section. */
4752 input_section->flags &=~ SEC_HAS_CONTENTS;
4755 /* Build the external symbol information. */
4758 einfo.debug = &debug;
4760 einfo.failed = false;
4761 elf_link_hash_traverse (elf_hash_table (info),
4762 elf64_alpha_output_extsym,
4767 /* Set the size of the .mdebug section. */
4768 o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
4770 /* Skip this section later on (I don't think this currently
4771 matters, but someday it might). */
4772 o->link_order_head = (struct bfd_link_order *) NULL;
4778 /* Invoke the regular ELF backend linker to do all the work. */
4779 if (! bfd_elf64_bfd_final_link (abfd, info))
4782 /* Now write out the computed sections. */
4784 /* The .got subsections... */
4786 bfd *i, *dynobj = elf_hash_table(info)->dynobj;
4787 for (i = alpha_elf_hash_table(info)->got_list;
4789 i = alpha_elf_tdata(i)->got_link_next)
4793 /* elf_bfd_final_link already did everything in dynobj. */
4797 sgot = alpha_elf_tdata(i)->got;
4798 if (! bfd_set_section_contents (abfd, sgot->output_section,
4800 (file_ptr) sgot->output_offset,
4806 if (mdebug_sec != (asection *) NULL)
4808 BFD_ASSERT (abfd->output_has_begun);
4809 if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
4811 mdebug_sec->filepos))
4814 bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
4820 static enum elf_reloc_type_class
4821 elf64_alpha_reloc_type_class (rela)
4822 const Elf_Internal_Rela *rela;
4824 switch ((int) ELF64_R_TYPE (rela->r_info))
4826 case R_ALPHA_RELATIVE:
4827 return reloc_class_relative;
4828 case R_ALPHA_JMP_SLOT:
4829 return reloc_class_plt;
4831 return reloc_class_copy;
4833 return reloc_class_normal;
4837 /* ECOFF swapping routines. These are used when dealing with the
4838 .mdebug section, which is in the ECOFF debugging format. Copied
4839 from elf32-mips.c. */
4840 static const struct ecoff_debug_swap
4841 elf64_alpha_ecoff_debug_swap =
4843 /* Symbol table magic number. */
4845 /* Alignment of debugging information. E.g., 4. */
4847 /* Sizes of external symbolic information. */
4848 sizeof (struct hdr_ext),
4849 sizeof (struct dnr_ext),
4850 sizeof (struct pdr_ext),
4851 sizeof (struct sym_ext),
4852 sizeof (struct opt_ext),
4853 sizeof (struct fdr_ext),
4854 sizeof (struct rfd_ext),
4855 sizeof (struct ext_ext),
4856 /* Functions to swap in external symbolic data. */
4865 _bfd_ecoff_swap_tir_in,
4866 _bfd_ecoff_swap_rndx_in,
4867 /* Functions to swap out external symbolic data. */
4876 _bfd_ecoff_swap_tir_out,
4877 _bfd_ecoff_swap_rndx_out,
4878 /* Function to read in symbolic data. */
4879 elf64_alpha_read_ecoff_info
4882 /* Use a non-standard hash bucket size of 8. */
4884 const struct elf_size_info alpha_elf_size_info =
4886 sizeof (Elf64_External_Ehdr),
4887 sizeof (Elf64_External_Phdr),
4888 sizeof (Elf64_External_Shdr),
4889 sizeof (Elf64_External_Rel),
4890 sizeof (Elf64_External_Rela),
4891 sizeof (Elf64_External_Sym),
4892 sizeof (Elf64_External_Dyn),
4893 sizeof (Elf_External_Note),
4897 ELFCLASS64, EV_CURRENT,
4898 bfd_elf64_write_out_phdrs,
4899 bfd_elf64_write_shdrs_and_ehdr,
4900 bfd_elf64_write_relocs,
4901 bfd_elf64_swap_symbol_out,
4902 bfd_elf64_slurp_reloc_table,
4903 bfd_elf64_slurp_symbol_table,
4904 bfd_elf64_swap_dyn_in,
4905 bfd_elf64_swap_dyn_out,
4912 #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec
4913 #define TARGET_LITTLE_NAME "elf64-alpha"
4914 #define ELF_ARCH bfd_arch_alpha
4915 #define ELF_MACHINE_CODE EM_ALPHA
4916 #define ELF_MAXPAGESIZE 0x10000
4918 #define bfd_elf64_bfd_link_hash_table_create \
4919 elf64_alpha_bfd_link_hash_table_create
4921 #define bfd_elf64_bfd_reloc_type_lookup \
4922 elf64_alpha_bfd_reloc_type_lookup
4923 #define elf_info_to_howto \
4924 elf64_alpha_info_to_howto
4926 #define bfd_elf64_mkobject \
4927 elf64_alpha_mkobject
4928 #define elf_backend_object_p \
4929 elf64_alpha_object_p
4931 #define elf_backend_section_from_shdr \
4932 elf64_alpha_section_from_shdr
4933 #define elf_backend_section_flags \
4934 elf64_alpha_section_flags
4935 #define elf_backend_fake_sections \
4936 elf64_alpha_fake_sections
4938 #define bfd_elf64_bfd_is_local_label_name \
4939 elf64_alpha_is_local_label_name
4940 #define bfd_elf64_find_nearest_line \
4941 elf64_alpha_find_nearest_line
4942 #define bfd_elf64_bfd_relax_section \
4943 elf64_alpha_relax_section
4945 #define elf_backend_add_symbol_hook \
4946 elf64_alpha_add_symbol_hook
4947 #define elf_backend_check_relocs \
4948 elf64_alpha_check_relocs
4949 #define elf_backend_create_dynamic_sections \
4950 elf64_alpha_create_dynamic_sections
4951 #define elf_backend_adjust_dynamic_symbol \
4952 elf64_alpha_adjust_dynamic_symbol
4953 #define elf_backend_always_size_sections \
4954 elf64_alpha_always_size_sections
4955 #define elf_backend_size_dynamic_sections \
4956 elf64_alpha_size_dynamic_sections
4957 #define elf_backend_relocate_section \
4958 elf64_alpha_relocate_section
4959 #define elf_backend_finish_dynamic_symbol \
4960 elf64_alpha_finish_dynamic_symbol
4961 #define elf_backend_finish_dynamic_sections \
4962 elf64_alpha_finish_dynamic_sections
4963 #define bfd_elf64_bfd_final_link \
4964 elf64_alpha_final_link
4965 #define elf_backend_reloc_type_class \
4966 elf64_alpha_reloc_type_class
4968 #define elf_backend_ecoff_debug_swap \
4969 &elf64_alpha_ecoff_debug_swap
4971 #define elf_backend_size_info \
4974 /* A few constants that determine how the .plt section is set up. */
4975 #define elf_backend_want_got_plt 0
4976 #define elf_backend_plt_readonly 0
4977 #define elf_backend_want_plt_sym 1
4978 #define elf_backend_got_header_size 0
4979 #define elf_backend_plt_header_size PLT_HEADER_SIZE
4981 #include "elf64-target.h"