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cell-binutils  2.17cvs20070401
Classes | Defines | Functions | Variables
elf64-x86-64.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/x86-64.h"
#include "elf64-target.h"

Go to the source code of this file.

Classes

struct  elf_reloc_map
struct  elf64_x86_64_dyn_relocs
struct  elf64_x86_64_link_hash_entry
struct  elf64_x86_64_obj_tdata

Defines

#define MINUS_ONE   (~ (bfd_vma) 0)
#define R_X86_64_standard   (R_X86_64_TLSDESC + 1)
#define R_X86_64_vt_offset   (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
#define ELF_DYNAMIC_INTERPRETER   "/lib/ld64.so.1"
#define ELIMINATE_COPY_RELOCS   1
#define GOT_ENTRY_SIZE   8
#define PLT_ENTRY_SIZE   16
#define GOT_UNKNOWN   0
#define GOT_NORMAL   1
#define GOT_TLS_GD   2
#define GOT_TLS_IE   3
#define GOT_TLS_GDESC   4
#define GOT_TLS_GD_BOTH_P(type)   ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
#define GOT_TLS_GD_P(type)   ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
#define GOT_TLS_GDESC_P(type)   ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
#define GOT_TLS_GD_ANY_P(type)   (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
#define elf64_x86_64_hash_entry(ent)   ((struct elf64_x86_64_link_hash_entry *)(ent))
#define elf64_x86_64_tdata(abfd)   ((struct elf64_x86_64_obj_tdata *) (abfd)->tdata.any)
#define elf64_x86_64_local_got_tls_type(abfd)   (elf64_x86_64_tdata (abfd)->local_got_tls_type)
#define elf64_x86_64_local_tlsdesc_gotent(abfd)   (elf64_x86_64_tdata (abfd)->local_tlsdesc_gotent)
#define elf64_x86_64_hash_table(p)   ((struct elf64_x86_64_link_hash_table *) ((p)->hash))
#define elf64_x86_64_compute_jump_table_size(htab)   ((htab)->srelplt->reloc_count * GOT_ENTRY_SIZE)
#define add_dynamic_entry(TAG, VAL)   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
#define TARGET_LITTLE_SYM   bfd_elf64_x86_64_vec
#define TARGET_LITTLE_NAME   "elf64-x86-64"
#define ELF_ARCH   bfd_arch_i386
#define ELF_MACHINE_CODE   EM_X86_64
#define ELF_MAXPAGESIZE   0x200000
#define ELF_MINPAGESIZE   0x1000
#define ELF_COMMONPAGESIZE   0x1000
#define elf_backend_can_gc_sections   1
#define elf_backend_can_refcount   1
#define elf_backend_want_got_plt   1
#define elf_backend_plt_readonly   1
#define elf_backend_want_plt_sym   0
#define elf_backend_got_header_size   (GOT_ENTRY_SIZE*3)
#define elf_backend_rela_normal   1
#define elf_info_to_howto   elf64_x86_64_info_to_howto
#define bfd_elf64_bfd_link_hash_table_create   elf64_x86_64_link_hash_table_create
#define bfd_elf64_bfd_reloc_type_lookup   elf64_x86_64_reloc_type_lookup
#define bfd_elf64_bfd_reloc_name_lookup   elf64_x86_64_reloc_name_lookup
#define elf_backend_adjust_dynamic_symbol   elf64_x86_64_adjust_dynamic_symbol
#define elf_backend_check_relocs   elf64_x86_64_check_relocs
#define elf_backend_copy_indirect_symbol   elf64_x86_64_copy_indirect_symbol
#define elf_backend_create_dynamic_sections   elf64_x86_64_create_dynamic_sections
#define elf_backend_finish_dynamic_sections   elf64_x86_64_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol   elf64_x86_64_finish_dynamic_symbol
#define elf_backend_gc_mark_hook   elf64_x86_64_gc_mark_hook
#define elf_backend_gc_sweep_hook   elf64_x86_64_gc_sweep_hook
#define elf_backend_grok_prstatus   elf64_x86_64_grok_prstatus
#define elf_backend_grok_psinfo   elf64_x86_64_grok_psinfo
#define elf_backend_reloc_type_class   elf64_x86_64_reloc_type_class
#define elf_backend_relocate_section   elf64_x86_64_relocate_section
#define elf_backend_size_dynamic_sections   elf64_x86_64_size_dynamic_sections
#define elf_backend_always_size_sections   elf64_x86_64_always_size_sections
#define elf_backend_init_index_section   _bfd_elf_init_1_index_section
#define elf_backend_plt_sym_val   elf64_x86_64_plt_sym_val
#define elf_backend_object_p   elf64_x86_64_elf_object_p
#define bfd_elf64_mkobject   elf64_x86_64_mkobject
#define elf_backend_section_from_shdr   elf64_x86_64_section_from_shdr
#define elf_backend_section_from_bfd_section   elf64_x86_64_elf_section_from_bfd_section
#define elf_backend_add_symbol_hook   elf64_x86_64_add_symbol_hook
#define elf_backend_symbol_processing   elf64_x86_64_symbol_processing
#define elf_backend_common_section_index   elf64_x86_64_common_section_index
#define elf_backend_common_section   elf64_x86_64_common_section
#define elf_backend_common_definition   elf64_x86_64_common_definition
#define elf_backend_merge_symbol   elf64_x86_64_merge_symbol
#define elf_backend_special_sections   elf64_x86_64_special_sections
#define elf_backend_additional_program_headers   elf64_x86_64_additional_program_headers
#define elf_backend_hash_symbol   elf64_x86_64_hash_symbol
#define TARGET_LITTLE_SYM   bfd_elf64_x86_64_freebsd_vec
#define TARGET_LITTLE_NAME   "elf64-x86-64-freebsd"
#define ELF_OSABI   ELFOSABI_FREEBSD
#define elf_backend_post_process_headers   _bfd_elf_set_osabi
#define elf64_bed   elf64_x86_64_fbsd_bed

Functions

static reloc_howto_type * elf64_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
static reloc_howto_type * elf64_x86_64_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
static reloc_howto_type * elf64_x86_64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
static void elf64_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, Elf_Internal_Rela *dst)
static bfd_boolean elf64_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
static bfd_boolean elf64_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
static struct bfd_hash_entrylink_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, const char *string)
static struct bfd_link_hash_tableelf64_x86_64_link_hash_table_create (bfd *abfd)
static bfd_boolean create_got_section (bfd *dynobj, struct bfd_link_info *info)
static bfd_boolean elf64_x86_64_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
static void elf64_x86_64_copy_indirect_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *dir, struct elf_link_hash_entry *ind)
static bfd_boolean elf64_x86_64_mkobject (bfd *abfd)
static bfd_boolean elf64_x86_64_elf_object_p (bfd *abfd)
static int elf64_x86_64_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
static bfd_boolean elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, const Elf_Internal_Rela *relocs)
static asectionelf64_x86_64_gc_mark_hook (asection *sec, struct bfd_link_info *info, Elf_Internal_Rela *rel, struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
static bfd_boolean elf64_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, const Elf_Internal_Rela *relocs)
static bfd_boolean elf64_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h)
static bfd_boolean allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
static bfd_boolean elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
static bfd_boolean elf64_x86_64_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
static bfd_vma dtpoff_base (struct bfd_link_info *info)
static bfd_vma tpoff (struct bfd_link_info *info, bfd_vma address)
static bfd_boolean is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
static bfd_boolean elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, asection **local_sections)
static bfd_boolean elf64_x86_64_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
static enum elf_reloc_type_class elf64_x86_64_reloc_type_class (const Elf_Internal_Rela *rela)
static bfd_boolean elf64_x86_64_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
static bfd_vma elf64_x86_64_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel ATTRIBUTE_UNUSED)
static bfd_boolean elf64_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, const char *name, int shindex)
static bfd_boolean elf64_x86_64_add_symbol_hook (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED, Elf_Internal_Sym *sym, const char **namep ATTRIBUTE_UNUSED, flagword *flagsp ATTRIBUTE_UNUSED, asection **secp, bfd_vma *valp)
static bfd_boolean elf64_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, int *index)
static void elf64_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
static bfd_boolean elf64_x86_64_common_definition (Elf_Internal_Sym *sym)
static unsigned int elf64_x86_64_common_section_index (asection *sec)
static asectionelf64_x86_64_common_section (asection *sec)
static bfd_boolean elf64_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED, struct elf_link_hash_entry *h, Elf_Internal_Sym *sym, asection **psec, bfd_vma *pvalue ATTRIBUTE_UNUSED, unsigned int *pold_alignment ATTRIBUTE_UNUSED, bfd_boolean *skip ATTRIBUTE_UNUSED, bfd_boolean *override ATTRIBUTE_UNUSED, bfd_boolean *type_change_ok ATTRIBUTE_UNUSED, bfd_boolean *size_change_ok ATTRIBUTE_UNUSED, bfd_boolean *newdef ATTRIBUTE_UNUSED, bfd_boolean *newdyn, bfd_boolean *newdyncommon ATTRIBUTE_UNUSED, bfd_boolean *newweak ATTRIBUTE_UNUSED, bfd *abfd ATTRIBUTE_UNUSED, asection **sec, bfd_boolean *olddef ATTRIBUTE_UNUSED, bfd_boolean *olddyn, bfd_boolean *olddyncommon ATTRIBUTE_UNUSED, bfd_boolean *oldweak ATTRIBUTE_UNUSED, bfd *oldbfd, asection **oldsec)
static int elf64_x86_64_additional_program_headers (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
static bfd_boolean elf64_x86_64_hash_symbol (struct elf_link_hash_entry *h)

Variables

static reloc_howto_type x86_64_elf_howto_table []
static struct elf_reloc_map []
static const bfd_byte elf64_x86_64_plt0_entry [PLT_ENTRY_SIZE]
static const bfd_byte elf64_x86_64_plt_entry [PLT_ENTRY_SIZE]
static struct bfd_elf_special_section []

Class Documentation

struct elf_reloc_map

Definition at line 403 of file elf32-dlx.c.

Class Members
bfd_reloc_code_real_type bfd_reloc_val
bfd_reloc_code_real_type bfd_val
unsigned char elf_reloc_val
int elf_reloc_val
unsigned char howto_index
struct elf64_x86_64_dyn_relocs

Definition at line 391 of file elf64-x86-64.c.

Collaboration diagram for elf64_x86_64_dyn_relocs:
Class Members
bfd_size_type count
struct elf64_x86_64_dyn_relocs * next
bfd_size_type pc_count
asection * sec
struct elf64_x86_64_link_hash_entry

Definition at line 408 of file elf64-x86-64.c.

Collaboration diagram for elf64_x86_64_link_hash_entry:
Class Members
struct elf64_x86_64_dyn_relocs * dyn_relocs
unsigned char tls_type
bfd_vma tlsdesc_got
struct elf64_x86_64_obj_tdata

Definition at line 438 of file elf64-x86-64.c.

Class Members
char * local_got_tls_type
bfd_vma * local_tlsdesc_gotent
struct elf64_x86_64_link_hash_table

Definition at line 460 of file elf64-x86-64.c.

Collaboration diagram for elf64_x86_64_link_hash_table:
Class Members
asection * sdynbss
asection * sgot
asection * sgotplt
bfd_vma sgotplt_jump_table_size
asection * splt
asection * srelbss
asection * srelgot
asection * srelplt
union elf64_x86_64_link_hash_table tls_ld_got
bfd_vma tlsdesc_got
bfd_vma tlsdesc_plt
union elf64_x86_64_link_hash_table.tls_ld_got

Definition at line 482 of file elf64-x86-64.c.

Class Members
bfd_vma offset
bfd_signed_vma refcount

Define Documentation

#define add_dynamic_entry (   TAG,
  VAL 
)    _bfd_elf_add_dynamic_entry (info, TAG, VAL)

Definition at line 3677 of file elf64-x86-64.c.

Definition at line 3680 of file elf64-x86-64.c.

Definition at line 3679 of file elf64-x86-64.c.

Definition at line 3700 of file elf64-x86-64.c.

#define elf64_bed   elf64_x86_64_fbsd_bed

Definition at line 3742 of file elf64-x86-64.c.

#define elf64_x86_64_compute_jump_table_size (   htab)    ((htab)->srelplt->reloc_count * GOT_ENTRY_SIZE)

Definition at line 499 of file elf64-x86-64.c.

#define elf64_x86_64_hash_entry (   ent)    ((struct elf64_x86_64_link_hash_entry *)(ent))

Definition at line 435 of file elf64-x86-64.c.

#define elf64_x86_64_hash_table (   p)    ((struct elf64_x86_64_link_hash_table *) ((p)->hash))

Definition at line 496 of file elf64-x86-64.c.

#define elf64_x86_64_local_got_tls_type (   abfd)    (elf64_x86_64_tdata (abfd)->local_got_tls_type)

Definition at line 452 of file elf64-x86-64.c.

#define elf64_x86_64_local_tlsdesc_gotent (   abfd)    (elf64_x86_64_tdata (abfd)->local_tlsdesc_gotent)

Definition at line 455 of file elf64-x86-64.c.

#define elf64_x86_64_tdata (   abfd)    ((struct elf64_x86_64_obj_tdata *) (abfd)->tdata.any)

Definition at line 449 of file elf64-x86-64.c.

#define ELF_ARCH   bfd_arch_i386

Definition at line 3661 of file elf64-x86-64.c.

Definition at line 3707 of file elf64-x86-64.c.

Definition at line 3721 of file elf64-x86-64.c.

Definition at line 3683 of file elf64-x86-64.c.

Definition at line 3696 of file elf64-x86-64.c.

Definition at line 3667 of file elf64-x86-64.c.

#define elf_backend_can_refcount   1

Definition at line 3668 of file elf64-x86-64.c.

Definition at line 3684 of file elf64-x86-64.c.

Definition at line 3715 of file elf64-x86-64.c.

Definition at line 3713 of file elf64-x86-64.c.

Definition at line 3711 of file elf64-x86-64.c.

Definition at line 3685 of file elf64-x86-64.c.

Definition at line 3686 of file elf64-x86-64.c.

Definition at line 3687 of file elf64-x86-64.c.

Definition at line 3688 of file elf64-x86-64.c.

Definition at line 3689 of file elf64-x86-64.c.

Definition at line 3690 of file elf64-x86-64.c.

Definition at line 3672 of file elf64-x86-64.c.

Definition at line 3691 of file elf64-x86-64.c.

Definition at line 3692 of file elf64-x86-64.c.

Definition at line 3723 of file elf64-x86-64.c.

Definition at line 3697 of file elf64-x86-64.c.

Definition at line 3717 of file elf64-x86-64.c.

Definition at line 3699 of file elf64-x86-64.c.

#define elf_backend_plt_readonly   1

Definition at line 3670 of file elf64-x86-64.c.

Definition at line 3698 of file elf64-x86-64.c.

Definition at line 3739 of file elf64-x86-64.c.

#define elf_backend_rela_normal   1

Definition at line 3673 of file elf64-x86-64.c.

Definition at line 3693 of file elf64-x86-64.c.

Definition at line 3694 of file elf64-x86-64.c.

Definition at line 3705 of file elf64-x86-64.c.

Definition at line 3702 of file elf64-x86-64.c.

Definition at line 3695 of file elf64-x86-64.c.

#define elf_backend_special_sections   elf64_x86_64_special_sections

Definition at line 3719 of file elf64-x86-64.c.

Definition at line 3709 of file elf64-x86-64.c.

#define elf_backend_want_got_plt   1

Definition at line 3669 of file elf64-x86-64.c.

#define elf_backend_want_plt_sym   0

Definition at line 3671 of file elf64-x86-64.c.

#define ELF_COMMONPAGESIZE   0x1000

Definition at line 3665 of file elf64-x86-64.c.

#define ELF_DYNAMIC_INTERPRETER   "/lib/ld64.so.1"

Definition at line 347 of file elf64-x86-64.c.

Definition at line 3675 of file elf64-x86-64.c.

Definition at line 3662 of file elf64-x86-64.c.

#define ELF_MAXPAGESIZE   0x200000

Definition at line 3663 of file elf64-x86-64.c.

#define ELF_MINPAGESIZE   0x1000

Definition at line 3664 of file elf64-x86-64.c.

Definition at line 3736 of file elf64-x86-64.c.

#define ELIMINATE_COPY_RELOCS   1

Definition at line 353 of file elf64-x86-64.c.

#define GOT_ENTRY_SIZE   8

Definition at line 357 of file elf64-x86-64.c.

#define GOT_NORMAL   1

Definition at line 416 of file elf64-x86-64.c.

#define GOT_TLS_GD   2

Definition at line 417 of file elf64-x86-64.c.

#define GOT_TLS_GD_ANY_P (   type)    (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))

Definition at line 426 of file elf64-x86-64.c.

#define GOT_TLS_GD_BOTH_P (   type)    ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))

Definition at line 420 of file elf64-x86-64.c.

#define GOT_TLS_GD_P (   type)    ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))

Definition at line 422 of file elf64-x86-64.c.

#define GOT_TLS_GDESC   4

Definition at line 419 of file elf64-x86-64.c.

#define GOT_TLS_GDESC_P (   type)    ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))

Definition at line 424 of file elf64-x86-64.c.

#define GOT_TLS_IE   3

Definition at line 418 of file elf64-x86-64.c.

#define GOT_UNKNOWN   0

Definition at line 415 of file elf64-x86-64.c.

#define MINUS_ONE   (~ (bfd_vma) 0)

Definition at line 31 of file elf64-x86-64.c.

#define PLT_ENTRY_SIZE   16

Definition at line 361 of file elf64-x86-64.c.

#define R_X86_64_standard   (R_X86_64_TLSDESC + 1)
#define R_X86_64_vt_offset   (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
#define TARGET_LITTLE_NAME   "elf64-x86-64"

Definition at line 3733 of file elf64-x86-64.c.

#define TARGET_LITTLE_NAME   "elf64-x86-64-freebsd"

Definition at line 3733 of file elf64-x86-64.c.

Definition at line 3731 of file elf64-x86-64.c.

Definition at line 3731 of file elf64-x86-64.c.


Function Documentation

static bfd_boolean allocate_dynrelocs ( struct elf_link_hash_entry h,
void *  inf 
) [static]

Definition at line 1440 of file elf64-x86-64.c.

{
  struct bfd_link_info *info;
  struct elf64_x86_64_link_hash_table *htab;
  struct elf64_x86_64_link_hash_entry *eh;
  struct elf64_x86_64_dyn_relocs *p;

  if (h->root.type == bfd_link_hash_indirect)
    return TRUE;

  if (h->root.type == bfd_link_hash_warning)
    h = (struct elf_link_hash_entry *) h->root.u.i.link;

  info = (struct bfd_link_info *) inf;
  htab = elf64_x86_64_hash_table (info);

  if (htab->elf.dynamic_sections_created
      && h->plt.refcount > 0)
    {
      /* Make sure this symbol is output as a dynamic symbol.
        Undefined weak syms won't yet be marked as dynamic.  */
      if (h->dynindx == -1
         && !h->forced_local)
       {
         if (! bfd_elf_link_record_dynamic_symbol (info, h))
           return FALSE;
       }

      if (info->shared
         || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
       {
         asection *s = htab->splt;

         /* If this is the first .plt entry, make room for the special
            first entry.  */
         if (s->size == 0)
           s->size += PLT_ENTRY_SIZE;

         h->plt.offset = s->size;

         /* If this symbol is not defined in a regular file, and we are
            not generating a shared library, then set the symbol to this
            location in the .plt.  This is required to make function
            pointers compare as equal between the normal executable and
            the shared library.  */
         if (! info->shared
             && !h->def_regular)
           {
             h->root.u.def.section = s;
             h->root.u.def.value = h->plt.offset;
           }

         /* Make room for this entry.  */
         s->size += PLT_ENTRY_SIZE;

         /* We also need to make an entry in the .got.plt section, which
            will be placed in the .got section by the linker script.  */
         htab->sgotplt->size += GOT_ENTRY_SIZE;

         /* We also need to make an entry in the .rela.plt section.  */
         htab->srelplt->size += sizeof (Elf64_External_Rela);
         htab->srelplt->reloc_count++;
       }
      else
       {
         h->plt.offset = (bfd_vma) -1;
         h->needs_plt = 0;
       }
    }
  else
    {
      h->plt.offset = (bfd_vma) -1;
      h->needs_plt = 0;
    }

  eh = (struct elf64_x86_64_link_hash_entry *) h;
  eh->tlsdesc_got = (bfd_vma) -1;

  /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
     make it a R_X86_64_TPOFF32 requiring no GOT entry.  */
  if (h->got.refcount > 0
      && !info->shared
      && h->dynindx == -1
      && elf64_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
    h->got.offset = (bfd_vma) -1;
  else if (h->got.refcount > 0)
    {
      asection *s;
      bfd_boolean dyn;
      int tls_type = elf64_x86_64_hash_entry (h)->tls_type;

      /* Make sure this symbol is output as a dynamic symbol.
        Undefined weak syms won't yet be marked as dynamic.  */
      if (h->dynindx == -1
         && !h->forced_local)
       {
         if (! bfd_elf_link_record_dynamic_symbol (info, h))
           return FALSE;
       }

      if (GOT_TLS_GDESC_P (tls_type))
       {
         eh->tlsdesc_got = htab->sgotplt->size
           - elf64_x86_64_compute_jump_table_size (htab);
         htab->sgotplt->size += 2 * GOT_ENTRY_SIZE;
         h->got.offset = (bfd_vma) -2;
       }
      if (! GOT_TLS_GDESC_P (tls_type)
         || GOT_TLS_GD_P (tls_type))
       {
         s = htab->sgot;
         h->got.offset = s->size;
         s->size += GOT_ENTRY_SIZE;
         if (GOT_TLS_GD_P (tls_type))
           s->size += GOT_ENTRY_SIZE;
       }
      dyn = htab->elf.dynamic_sections_created;
      /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
        and two if global.
        R_X86_64_GOTTPOFF needs one dynamic relocation.  */
      if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
         || tls_type == GOT_TLS_IE)
       htab->srelgot->size += sizeof (Elf64_External_Rela);
      else if (GOT_TLS_GD_P (tls_type))
       htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
      else if (! GOT_TLS_GDESC_P (tls_type)
              && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
                 || h->root.type != bfd_link_hash_undefweak)
              && (info->shared
                 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
       htab->srelgot->size += sizeof (Elf64_External_Rela);
      if (GOT_TLS_GDESC_P (tls_type))
       {
         htab->srelplt->size += sizeof (Elf64_External_Rela);
         htab->tlsdesc_plt = (bfd_vma) -1;
       }
    }
  else
    h->got.offset = (bfd_vma) -1;

  if (eh->dyn_relocs == NULL)
    return TRUE;

  /* In the shared -Bsymbolic case, discard space allocated for
     dynamic pc-relative relocs against symbols which turn out to be
     defined in regular objects.  For the normal shared case, discard
     space for pc-relative relocs that have become local due to symbol
     visibility changes.  */

  if (info->shared)
    {
      /* Relocs that use pc_count are those that appear on a call
        insn, or certain REL relocs that can generated via assembly.
        We want calls to protected symbols to resolve directly to the
        function rather than going via the plt.  If people want
        function pointer comparisons to work as expected then they
        should avoid writing weird assembly.  */
      if (SYMBOL_CALLS_LOCAL (info, h))
       {
         struct elf64_x86_64_dyn_relocs **pp;

         for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
           {
             p->count -= p->pc_count;
             p->pc_count = 0;
             if (p->count == 0)
              *pp = p->next;
             else
              pp = &p->next;
           }
       }

      /* Also discard relocs on undefined weak syms with non-default
        visibility.  */
      if (eh->dyn_relocs != NULL
         && h->root.type == bfd_link_hash_undefweak)
       {
         if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
           eh->dyn_relocs = NULL;

         /* Make sure undefined weak symbols are output as a dynamic
            symbol in PIEs.  */
         else if (h->dynindx == -1
                 && !h->forced_local)
           {
             if (! bfd_elf_link_record_dynamic_symbol (info, h))
              return FALSE;
           }
       }
    }
  else if (ELIMINATE_COPY_RELOCS)
    {
      /* For the non-shared case, discard space for relocs against
        symbols which turn out to need copy relocs or are not
        dynamic.  */

      if (!h->non_got_ref
         && ((h->def_dynamic
              && !h->def_regular)
             || (htab->elf.dynamic_sections_created
                && (h->root.type == bfd_link_hash_undefweak
                    || h->root.type == bfd_link_hash_undefined))))
       {
         /* Make sure this symbol is output as a dynamic symbol.
            Undefined weak syms won't yet be marked as dynamic.  */
         if (h->dynindx == -1
             && !h->forced_local)
           {
             if (! bfd_elf_link_record_dynamic_symbol (info, h))
              return FALSE;
           }

         /* If that succeeded, we know we'll be keeping all the
            relocs.  */
         if (h->dynindx != -1)
           goto keep;
       }

      eh->dyn_relocs = NULL;

    keep: ;
    }

  /* Finally, allocate space.  */
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
    {
      asection *sreloc = elf_section_data (p->sec)->sreloc;
      sreloc->size += p->count * sizeof (Elf64_External_Rela);
    }

  return TRUE;
}

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static bfd_boolean create_got_section ( bfd dynobj,
struct bfd_link_info info 
) [static]

Definition at line 572 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;

  if (! _bfd_elf_create_got_section (dynobj, info))
    return FALSE;

  htab = elf64_x86_64_hash_table (info);
  htab->sgot = bfd_get_section_by_name (dynobj, ".got");
  htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
  if (!htab->sgot || !htab->sgotplt)
    abort ();

  htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
                                          (SEC_ALLOC | SEC_LOAD
                                          | SEC_HAS_CONTENTS
                                          | SEC_IN_MEMORY
                                          | SEC_LINKER_CREATED
                                          | SEC_READONLY));
  if (htab->srelgot == NULL
      || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
    return FALSE;
  return TRUE;
}

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static bfd_vma dtpoff_base ( struct bfd_link_info info) [static]

Definition at line 2025 of file elf64-x86-64.c.

{
  /* If tls_sec is NULL, we should have signalled an error already.  */
  if (elf_hash_table (info)->tls_sec == NULL)
    return 0;
  return elf_hash_table (info)->tls_sec->vma;
}

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static bfd_boolean elf64_x86_64_add_symbol_hook ( bfd abfd,
struct bfd_link_info *info  ATTRIBUTE_UNUSED,
Elf_Internal_Sym *  sym,
const char **namep  ATTRIBUTE_UNUSED,
flagword *flagsp  ATTRIBUTE_UNUSED,
asection **  secp,
bfd_vma valp 
) [static]

Definition at line 3472 of file elf64-x86-64.c.

{
  asection *lcomm;

  switch (sym->st_shndx)
    {
    case SHN_X86_64_LCOMMON:
      lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
      if (lcomm == NULL)
       {
         lcomm = bfd_make_section_with_flags (abfd,
                                          "LARGE_COMMON",
                                          (SEC_ALLOC
                                          | SEC_IS_COMMON
                                          | SEC_LINKER_CREATED));
         if (lcomm == NULL)
           return FALSE;
         elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
       }
      *secp = lcomm;
      *valp = sym->st_size;
      break;
    }
  return TRUE;
}

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static int elf64_x86_64_additional_program_headers ( bfd abfd,
struct bfd_link_info *info  ATTRIBUTE_UNUSED 
) [static]

Definition at line 3613 of file elf64-x86-64.c.

{
  asection *s;
  int count = 0; 

  /* Check to see if we need a large readonly segment.  */
  s = bfd_get_section_by_name (abfd, ".lrodata");
  if (s && (s->flags & SEC_LOAD))
    count++;

  /* Check to see if we need a large data segment.  Since .lbss sections
     is placed right after the .bss section, there should be no need for
     a large data segment just because of .lbss.  */
  s = bfd_get_section_by_name (abfd, ".ldata");
  if (s && (s->flags & SEC_LOAD))
    count++;

  return count;
}

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Definition at line 1285 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;
  asection *s;
  unsigned int power_of_two;

  /* If this is a function, put it in the procedure linkage table.  We
     will fill in the contents of the procedure linkage table later,
     when we know the address of the .got section.  */
  if (h->type == STT_FUNC
      || h->needs_plt)
    {
      if (h->plt.refcount <= 0
         || SYMBOL_CALLS_LOCAL (info, h)
         || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
             && h->root.type == bfd_link_hash_undefweak))
       {
         /* This case can occur if we saw a PLT32 reloc in an input
            file, but the symbol was never referred to by a dynamic
            object, or if all references were garbage collected.  In
            such a case, we don't actually need to build a procedure
            linkage table, and we can just do a PC32 reloc instead.  */
         h->plt.offset = (bfd_vma) -1;
         h->needs_plt = 0;
       }

      return TRUE;
    }
  else
    /* It's possible that we incorrectly decided a .plt reloc was
       needed for an R_X86_64_PC32 reloc to a non-function sym in
       check_relocs.  We can't decide accurately between function and
       non-function syms in check-relocs;  Objects loaded later in
       the link may change h->type.  So fix it now.  */
    h->plt.offset = (bfd_vma) -1;

  /* If this is a weak symbol, and there is a real definition, the
     processor independent code will have arranged for us to see the
     real definition first, and we can just use the same value.        */
  if (h->u.weakdef != NULL)
    {
      BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
                || h->u.weakdef->root.type == bfd_link_hash_defweak);
      h->root.u.def.section = h->u.weakdef->root.u.def.section;
      h->root.u.def.value = h->u.weakdef->root.u.def.value;
      if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
       h->non_got_ref = h->u.weakdef->non_got_ref;
      return TRUE;
    }

  /* This is a reference to a symbol defined by a dynamic object which
     is not a function.      */

  /* If we are creating a shared library, we must presume that the
     only references to the symbol are via the global offset table.
     For such cases we need not do anything here; the relocations will
     be handled correctly by relocate_section.   */
  if (info->shared)
    return TRUE;

  /* If there are no references to this symbol that do not use the
     GOT, we don't need to generate a copy reloc.  */
  if (!h->non_got_ref)
    return TRUE;

  /* If -z nocopyreloc was given, we won't generate them either.  */
  if (info->nocopyreloc)
    {
      h->non_got_ref = 0;
      return TRUE;
    }

  if (ELIMINATE_COPY_RELOCS)
    {
      struct elf64_x86_64_link_hash_entry * eh;
      struct elf64_x86_64_dyn_relocs *p;

      eh = (struct elf64_x86_64_link_hash_entry *) h;
      for (p = eh->dyn_relocs; p != NULL; p = p->next)
       {
         s = p->sec->output_section;
         if (s != NULL && (s->flags & SEC_READONLY) != 0)
           break;
       }

      /* If we didn't find any dynamic relocs in read-only sections, then
        we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
      if (p == NULL)
       {
         h->non_got_ref = 0;
         return TRUE;
       }
    }

  if (h->size == 0)
    {
      (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
                          h->root.root.string);
      return TRUE;
    }

  /* We must allocate the symbol in our .dynbss section, which will
     become part of the .bss section of the executable.  There will be
     an entry for this symbol in the .dynsym section.  The dynamic
     object will contain position independent code, so all references
     from the dynamic object to this symbol will go through the global
     offset table.  The dynamic linker will use the .dynsym entry to
     determine the address it must put in the global offset table, so
     both the dynamic object and the regular object will refer to the
     same memory location for the variable.  */

  htab = elf64_x86_64_hash_table (info);

  /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
     to copy the initial value out of the dynamic object and into the
     runtime process image.  */
  if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
    {
      htab->srelbss->size += sizeof (Elf64_External_Rela);
      h->needs_copy = 1;
    }

  /* We need to figure out the alignment required for this symbol.  I
     have no idea how ELF linkers handle this.   16-bytes is the size
     of the largest type that requires hard alignment -- long double.  */
  /* FIXME: This is VERY ugly. Should be fixed for all architectures using
     this construct.  */
  power_of_two = bfd_log2 (h->size);
  if (power_of_two > 4)
    power_of_two = 4;

  /* Apply the required alignment.  */
  s = htab->sdynbss;
  s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
  if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
    {
      if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
       return FALSE;
    }

  /* Define the symbol as being at this point in the section.  */
  h->root.u.def.section = s;
  h->root.u.def.value = s->size;

  /* Increment the section size to make room for the symbol.  */
  s->size += h->size;

  return TRUE;
}

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static bfd_boolean elf64_x86_64_always_size_sections ( bfd output_bfd,
struct bfd_link_info info 
) [static]

Definition at line 1986 of file elf64-x86-64.c.

{
  asection *tls_sec = elf_hash_table (info)->tls_sec;

  if (tls_sec)
    {
      struct elf_link_hash_entry *tlsbase;

      tlsbase = elf_link_hash_lookup (elf_hash_table (info),
                                  "_TLS_MODULE_BASE_",
                                  FALSE, FALSE, FALSE);

      if (tlsbase && tlsbase->type == STT_TLS)
       {
         struct bfd_link_hash_entry *bh = NULL;
         const struct elf_backend_data *bed
           = get_elf_backend_data (output_bfd);

         if (!(_bfd_generic_link_add_one_symbol
              (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
               tls_sec, 0, NULL, FALSE,
               bed->collect, &bh)))
           return FALSE;
         tlsbase = (struct elf_link_hash_entry *)bh;
         tlsbase->def_regular = 1;
         tlsbase->other = STV_HIDDEN;
         (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
       }
    }

  return TRUE;
}

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static bfd_boolean elf64_x86_64_check_relocs ( bfd abfd,
struct bfd_link_info info,
asection sec,
const Elf_Internal_Rela relocs 
) [static]

Definition at line 741 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  const Elf_Internal_Rela *rel;
  const Elf_Internal_Rela *rel_end;
  asection *sreloc;

  if (info->relocatable)
    return TRUE;

  htab = elf64_x86_64_hash_table (info);
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (abfd);

  sreloc = NULL;

  rel_end = relocs + sec->reloc_count;
  for (rel = relocs; rel < rel_end; rel++)
    {
      unsigned int r_type;
      unsigned long r_symndx;
      struct elf_link_hash_entry *h;

      r_symndx = ELF64_R_SYM (rel->r_info);
      r_type = ELF64_R_TYPE (rel->r_info);

      if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
       {
         (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
                             abfd, r_symndx);
         return FALSE;
       }

      if (r_symndx < symtab_hdr->sh_info)
       h = NULL;
      else
       {
         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
         while (h->root.type == bfd_link_hash_indirect
               || h->root.type == bfd_link_hash_warning)
           h = (struct elf_link_hash_entry *) h->root.u.i.link;
       }

      r_type = elf64_x86_64_tls_transition (info, r_type, h == NULL);
      switch (r_type)
       {
       case R_X86_64_TLSLD:
         htab->tls_ld_got.refcount += 1;
         goto create_got;

       case R_X86_64_TPOFF32:
         if (info->shared)
           {
             (*_bfd_error_handler)
              (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
               abfd,
               x86_64_elf_howto_table[r_type].name,
               (h) ? h->root.root.string : "a local symbol");
             bfd_set_error (bfd_error_bad_value);
             return FALSE;
           }
         break;

       case R_X86_64_GOTTPOFF:
         if (info->shared)
           info->flags |= DF_STATIC_TLS;
         /* Fall through */

       case R_X86_64_GOT32:
       case R_X86_64_GOTPCREL:
       case R_X86_64_TLSGD:
       case R_X86_64_GOT64:
       case R_X86_64_GOTPCREL64:
       case R_X86_64_GOTPLT64:
       case R_X86_64_GOTPC32_TLSDESC:
       case R_X86_64_TLSDESC_CALL:
         /* This symbol requires a global offset table entry.  */
         {
           int tls_type, old_tls_type;

           switch (r_type)
             {
             default: tls_type = GOT_NORMAL; break;
             case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
             case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
             case R_X86_64_GOTPC32_TLSDESC:
             case R_X86_64_TLSDESC_CALL:
              tls_type = GOT_TLS_GDESC; break;
             }

           if (h != NULL)
             {
              if (r_type == R_X86_64_GOTPLT64)
                {
                  /* This relocation indicates that we also need
                     a PLT entry, as this is a function.  We don't need
                     a PLT entry for local symbols.  */
                  h->needs_plt = 1;
                  h->plt.refcount += 1;
                }
              h->got.refcount += 1;
              old_tls_type = elf64_x86_64_hash_entry (h)->tls_type;
             }
           else
             {
              bfd_signed_vma *local_got_refcounts;

              /* This is a global offset table entry for a local symbol.  */
              local_got_refcounts = elf_local_got_refcounts (abfd);
              if (local_got_refcounts == NULL)
                {
                  bfd_size_type size;

                  size = symtab_hdr->sh_info;
                  size *= sizeof (bfd_signed_vma)
                    + sizeof (bfd_vma) + sizeof (char);
                  local_got_refcounts = ((bfd_signed_vma *)
                                      bfd_zalloc (abfd, size));
                  if (local_got_refcounts == NULL)
                    return FALSE;
                  elf_local_got_refcounts (abfd) = local_got_refcounts;
                  elf64_x86_64_local_tlsdesc_gotent (abfd)
                    = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
                  elf64_x86_64_local_got_tls_type (abfd)
                    = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
                }
              local_got_refcounts[r_symndx] += 1;
              old_tls_type
                = elf64_x86_64_local_got_tls_type (abfd) [r_symndx];
             }

           /* If a TLS symbol is accessed using IE at least once,
              there is no point to use dynamic model for it.  */
           if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
              && (! GOT_TLS_GD_ANY_P (old_tls_type)
                  || tls_type != GOT_TLS_IE))
             {
              if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
                tls_type = old_tls_type;
              else if (GOT_TLS_GD_ANY_P (old_tls_type)
                      && GOT_TLS_GD_ANY_P (tls_type))
                tls_type |= old_tls_type;
              else
                {
                  (*_bfd_error_handler)
                    (_("%B: %s' accessed both as normal and thread local symbol"),
                     abfd, h ? h->root.root.string : "<local>");
                  return FALSE;
                }
             }

           if (old_tls_type != tls_type)
             {
              if (h != NULL)
                elf64_x86_64_hash_entry (h)->tls_type = tls_type;
              else
                elf64_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
             }
         }
         /* Fall through */

       case R_X86_64_GOTOFF64:
       case R_X86_64_GOTPC32:
       case R_X86_64_GOTPC64:
       create_got:
         if (htab->sgot == NULL)
           {
             if (htab->elf.dynobj == NULL)
              htab->elf.dynobj = abfd;
             if (!create_got_section (htab->elf.dynobj, info))
              return FALSE;
           }
         break;

       case R_X86_64_PLT32:
         /* This symbol requires a procedure linkage table entry.  We
            actually build the entry in adjust_dynamic_symbol,
            because this might be a case of linking PIC code which is
            never referenced by a dynamic object, in which case we
            don't need to generate a procedure linkage table entry
            after all.       */

         /* If this is a local symbol, we resolve it directly without
            creating a procedure linkage table entry.   */
         if (h == NULL)
           continue;

         h->needs_plt = 1;
         h->plt.refcount += 1;
         break;

       case R_X86_64_PLTOFF64:
         /* This tries to form the 'address' of a function relative
            to GOT.  For global symbols we need a PLT entry.  */
         if (h != NULL)
           {
             h->needs_plt = 1;
             h->plt.refcount += 1;
           }
         goto create_got;

       case R_X86_64_8:
       case R_X86_64_16:
       case R_X86_64_32:
       case R_X86_64_32S:
         /* Let's help debug shared library creation.  These relocs
            cannot be used in shared libs.  Don't error out for
            sections we don't care about, such as debug sections or
            non-constant sections.  */
         if (info->shared
             && (sec->flags & SEC_ALLOC) != 0
             && (sec->flags & SEC_READONLY) != 0)
           {
             (*_bfd_error_handler)
              (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
               abfd,
               x86_64_elf_howto_table[r_type].name,
               (h) ? h->root.root.string : "a local symbol");
             bfd_set_error (bfd_error_bad_value);
             return FALSE;
           }
         /* Fall through.  */

       case R_X86_64_PC8:
       case R_X86_64_PC16:
       case R_X86_64_PC32:
       case R_X86_64_PC64:
       case R_X86_64_64:
         if (h != NULL && !info->shared)
           {
             /* If this reloc is in a read-only section, we might
               need a copy reloc.  We can't check reliably at this
               stage whether the section is read-only, as input
               sections have not yet been mapped to output sections.
               Tentatively set the flag for now, and correct in
               adjust_dynamic_symbol.  */
             h->non_got_ref = 1;

             /* We may need a .plt entry if the function this reloc
               refers to is in a shared lib.  */
             h->plt.refcount += 1;
             if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64)
              h->pointer_equality_needed = 1;
           }

         /* If we are creating a shared library, and this is a reloc
            against a global symbol, or a non PC relative reloc
            against a local symbol, then we need to copy the reloc
            into the shared library.  However, if we are linking with
            -Bsymbolic, we do not need to copy a reloc against a
            global symbol which is defined in an object we are
            including in the link (i.e., DEF_REGULAR is set).  At
            this point we have not seen all the input files, so it is
            possible that DEF_REGULAR is not set now but will be set
            later (it is never cleared).  In case of a weak definition,
            DEF_REGULAR may be cleared later by a strong definition in
            a shared library.  We account for that possibility below by
            storing information in the relocs_copied field of the hash
            table entry.  A similar situation occurs when creating
            shared libraries and symbol visibility changes render the
            symbol local.

            If on the other hand, we are creating an executable, we
            may need to keep relocations for symbols satisfied by a
            dynamic library if we manage to avoid copy relocs for the
            symbol.  */
         if ((info->shared
              && (sec->flags & SEC_ALLOC) != 0
              && (((r_type != R_X86_64_PC8)
                  && (r_type != R_X86_64_PC16)
                  && (r_type != R_X86_64_PC32)
                  && (r_type != R_X86_64_PC64))
                 || (h != NULL
                     && (! SYMBOLIC_BIND (info, h)
                        || h->root.type == bfd_link_hash_defweak
                        || !h->def_regular))))
             || (ELIMINATE_COPY_RELOCS
                && !info->shared
                && (sec->flags & SEC_ALLOC) != 0
                && h != NULL
                && (h->root.type == bfd_link_hash_defweak
                    || !h->def_regular)))
           {
             struct elf64_x86_64_dyn_relocs *p;
             struct elf64_x86_64_dyn_relocs **head;

             /* We must copy these reloc types into the output file.
               Create a reloc section in dynobj and make room for
               this reloc.  */
             if (sreloc == NULL)
              {
                const char *name;
                bfd *dynobj;

                name = (bfd_elf_string_from_elf_section
                       (abfd,
                        elf_elfheader (abfd)->e_shstrndx,
                        elf_section_data (sec)->rel_hdr.sh_name));
                if (name == NULL)
                  return FALSE;

                if (! CONST_STRNEQ (name, ".rela")
                    || strcmp (bfd_get_section_name (abfd, sec),
                             name + 5) != 0)
                  {
                    (*_bfd_error_handler)
                     (_("%B: bad relocation section name `%s\'"),
                      abfd, name);
                  }

                if (htab->elf.dynobj == NULL)
                  htab->elf.dynobj = abfd;

                dynobj = htab->elf.dynobj;

                sreloc = bfd_get_section_by_name (dynobj, name);
                if (sreloc == NULL)
                  {
                    flagword flags;

                    flags = (SEC_HAS_CONTENTS | SEC_READONLY
                            | SEC_IN_MEMORY | SEC_LINKER_CREATED);
                    if ((sec->flags & SEC_ALLOC) != 0)
                     flags |= SEC_ALLOC | SEC_LOAD;
                    sreloc = bfd_make_section_with_flags (dynobj,
                                                     name,
                                                     flags);
                    if (sreloc == NULL
                       || ! bfd_set_section_alignment (dynobj, sreloc, 3))
                     return FALSE;
                  }
                elf_section_data (sec)->sreloc = sreloc;
              }

             /* If this is a global symbol, we count the number of
               relocations we need for this symbol.  */
             if (h != NULL)
              {
                head = &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs;
              }
             else
              {
                void **vpp;
                /* Track dynamic relocs needed for local syms too.
                   We really need local syms available to do this
                   easily.  Oh well.  */

                asection *s;
                s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
                                           sec, r_symndx);
                if (s == NULL)
                  return FALSE;

                /* Beware of type punned pointers vs strict aliasing
                   rules.  */
                vpp = &(elf_section_data (s)->local_dynrel);
                head = (struct elf64_x86_64_dyn_relocs **)vpp;
              }

             p = *head;
             if (p == NULL || p->sec != sec)
              {
                bfd_size_type amt = sizeof *p;
                p = ((struct elf64_x86_64_dyn_relocs *)
                     bfd_alloc (htab->elf.dynobj, amt));
                if (p == NULL)
                  return FALSE;
                p->next = *head;
                *head = p;
                p->sec = sec;
                p->count = 0;
                p->pc_count = 0;
              }

             p->count += 1;
             if (r_type == R_X86_64_PC8
                || r_type == R_X86_64_PC16
                || r_type == R_X86_64_PC32
                || r_type == R_X86_64_PC64)
              p->pc_count += 1;
           }
         break;

         /* This relocation describes the C++ object vtable hierarchy.
            Reconstruct it for later use during GC.  */
       case R_X86_64_GNU_VTINHERIT:
         if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
           return FALSE;
         break;

         /* This relocation describes which C++ vtable entries are actually
            used.  Record for later use during GC.  */
       case R_X86_64_GNU_VTENTRY:
         if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
           return FALSE;
         break;

       default:
         break;
       }
    }

  return TRUE;
}

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static bfd_boolean elf64_x86_64_common_definition ( Elf_Internal_Sym *  sym) [static]

Definition at line 3539 of file elf64-x86-64.c.

{
  return (sym->st_shndx == SHN_COMMON
         || sym->st_shndx == SHN_X86_64_LCOMMON);
}
static asection* elf64_x86_64_common_section ( asection sec) [static]

Definition at line 3555 of file elf64-x86-64.c.

Definition at line 3546 of file elf64-x86-64.c.

{
  if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
    return SHN_COMMON;
  else
    return SHN_X86_64_LCOMMON;
}

Definition at line 629 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_entry *edir, *eind;

  edir = (struct elf64_x86_64_link_hash_entry *) dir;
  eind = (struct elf64_x86_64_link_hash_entry *) ind;

  if (eind->dyn_relocs != NULL)
    {
      if (edir->dyn_relocs != NULL)
       {
         struct elf64_x86_64_dyn_relocs **pp;
         struct elf64_x86_64_dyn_relocs *p;

         /* Add reloc counts against the indirect sym to the direct sym
            list.  Merge any entries against the same section.  */
         for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
           {
             struct elf64_x86_64_dyn_relocs *q;

             for (q = edir->dyn_relocs; q != NULL; q = q->next)
              if (q->sec == p->sec)
                {
                  q->pc_count += p->pc_count;
                  q->count += p->count;
                  *pp = p->next;
                  break;
                }
             if (q == NULL)
              pp = &p->next;
           }
         *pp = edir->dyn_relocs;
       }

      edir->dyn_relocs = eind->dyn_relocs;
      eind->dyn_relocs = NULL;
    }

  if (ind->root.type == bfd_link_hash_indirect
      && dir->got.refcount <= 0)
    {
      edir->tls_type = eind->tls_type;
      eind->tls_type = GOT_UNKNOWN;
    }

  if (ELIMINATE_COPY_RELOCS
      && ind->root.type != bfd_link_hash_indirect
      && dir->dynamic_adjusted)
    {
      /* If called to transfer flags for a weakdef during processing
        of elf_adjust_dynamic_symbol, don't copy non_got_ref.
        We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
      dir->ref_dynamic |= ind->ref_dynamic;
      dir->ref_regular |= ind->ref_regular;
      dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
      dir->needs_plt |= ind->needs_plt;
      dir->pointer_equality_needed |= ind->pointer_equality_needed;
    }
  else
    _bfd_elf_link_hash_copy_indirect (info, dir, ind);
}

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static bfd_boolean elf64_x86_64_create_dynamic_sections ( bfd dynobj,
struct bfd_link_info info 
) [static]

Definition at line 602 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;

  htab = elf64_x86_64_hash_table (info);
  if (!htab->sgot && !create_got_section (dynobj, info))
    return FALSE;

  if (!_bfd_elf_create_dynamic_sections (dynobj, info))
    return FALSE;

  htab->splt = bfd_get_section_by_name (dynobj, ".plt");
  htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
  htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
  if (!info->shared)
    htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");

  if (!htab->splt || !htab->srelplt || !htab->sdynbss
      || (!info->shared && !htab->srelbss))
    abort ();

  return TRUE;
}

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static bfd_boolean elf64_x86_64_elf_object_p ( bfd abfd) [static]

Definition at line 707 of file elf64-x86-64.c.

{
  /* Set the right machine number for an x86-64 elf64 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
  return TRUE;
}

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static bfd_boolean elf64_x86_64_elf_section_from_bfd_section ( bfd *abfd  ATTRIBUTE_UNUSED,
asection sec,
int index 
) [static]

Definition at line 3508 of file elf64-x86-64.c.

{
  if (sec == &_bfd_elf_large_com_section)
    {
      *index = SHN_X86_64_LCOMMON;
      return TRUE;
    }
  return FALSE;
}
static bfd_boolean elf64_x86_64_finish_dynamic_sections ( bfd output_bfd,
struct bfd_link_info info 
) [static]

Definition at line 3268 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;
  bfd *dynobj;
  asection *sdyn;

  htab = elf64_x86_64_hash_table (info);
  dynobj = htab->elf.dynobj;
  sdyn = bfd_get_section_by_name (dynobj, ".dynamic");

  if (htab->elf.dynamic_sections_created)
    {
      Elf64_External_Dyn *dyncon, *dynconend;

      if (sdyn == NULL || htab->sgot == NULL)
       abort ();

      dyncon = (Elf64_External_Dyn *) sdyn->contents;
      dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
      for (; dyncon < dynconend; dyncon++)
       {
         Elf_Internal_Dyn dyn;
         asection *s;

         bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);

         switch (dyn.d_tag)
           {
           default:
             continue;

           case DT_PLTGOT:
             s = htab->sgotplt;
             dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
             break;

           case DT_JMPREL:
             dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
             break;

           case DT_PLTRELSZ:
             s = htab->srelplt->output_section;
             dyn.d_un.d_val = s->size;
             break;

           case DT_RELASZ:
             /* The procedure linkage table relocs (DT_JMPREL) should
               not be included in the overall relocs (DT_RELA).
               Therefore, we override the DT_RELASZ entry here to
               make it not include the JMPREL relocs.  Since the
               linker script arranges for .rela.plt to follow all
               other relocation sections, we don't have to worry
               about changing the DT_RELA entry.  */
             if (htab->srelplt != NULL)
              {
                s = htab->srelplt->output_section;
                dyn.d_un.d_val -= s->size;
              }
             break;

           case DT_TLSDESC_PLT:
             s = htab->splt;
             dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
              + htab->tlsdesc_plt;
             break;

           case DT_TLSDESC_GOT:
             s = htab->sgot;
             dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
              + htab->tlsdesc_got;
             break;
           }

         bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
       }

      /* Fill in the special first entry in the procedure linkage table.  */
      if (htab->splt && htab->splt->size > 0)
       {
         /* Fill in the first entry in the procedure linkage table.  */
         memcpy (htab->splt->contents, elf64_x86_64_plt0_entry,
                PLT_ENTRY_SIZE);
         /* Add offset for pushq GOT+8(%rip), since the instruction
            uses 6 bytes subtract this value.  */
         bfd_put_32 (output_bfd,
                    (htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset
                     + 8
                     - htab->splt->output_section->vma
                     - htab->splt->output_offset
                     - 6),
                    htab->splt->contents + 2);
         /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to
            the end of the instruction.  */
         bfd_put_32 (output_bfd,
                    (htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset
                     + 16
                     - htab->splt->output_section->vma
                     - htab->splt->output_offset
                     - 12),
                    htab->splt->contents + 8);

         elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize =
           PLT_ENTRY_SIZE;

         if (htab->tlsdesc_plt)
           {
             bfd_put_64 (output_bfd, (bfd_vma) 0,
                       htab->sgot->contents + htab->tlsdesc_got);

             memcpy (htab->splt->contents + htab->tlsdesc_plt,
                    elf64_x86_64_plt0_entry,
                    PLT_ENTRY_SIZE);

             /* Add offset for pushq GOT+8(%rip), since the
               instruction uses 6 bytes subtract this value.  */
             bfd_put_32 (output_bfd,
                       (htab->sgotplt->output_section->vma
                        + htab->sgotplt->output_offset
                        + 8
                        - htab->splt->output_section->vma
                        - htab->splt->output_offset
                        - htab->tlsdesc_plt
                        - 6),
                       htab->splt->contents + htab->tlsdesc_plt + 2);
             /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for
               htab->tlsdesc_got. The 12 is the offset to the end of
               the instruction.  */
             bfd_put_32 (output_bfd,
                       (htab->sgot->output_section->vma
                        + htab->sgot->output_offset
                        + htab->tlsdesc_got
                        - htab->splt->output_section->vma
                        - htab->splt->output_offset
                        - htab->tlsdesc_plt
                        - 12),
                       htab->splt->contents + htab->tlsdesc_plt + 8);
           }
       }
    }

  if (htab->sgotplt)
    {
      /* Fill in the first three entries in the global offset table.  */
      if (htab->sgotplt->size > 0)
       {
         /* Set the first entry in the global offset table to the address of
            the dynamic section.  */
         if (sdyn == NULL)
           bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents);
         else
           bfd_put_64 (output_bfd,
                     sdyn->output_section->vma + sdyn->output_offset,
                     htab->sgotplt->contents);
         /* Write GOT[1] and GOT[2], needed for the dynamic linker.  */
         bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + GOT_ENTRY_SIZE);
         bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + GOT_ENTRY_SIZE*2);
       }

      elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize =
       GOT_ENTRY_SIZE;
    }

  if (htab->sgot && htab->sgot->size > 0)
    elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize
      = GOT_ENTRY_SIZE;

  return TRUE;
}

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static bfd_boolean elf64_x86_64_finish_dynamic_symbol ( bfd output_bfd,
struct bfd_link_info info,
struct elf_link_hash_entry h,
Elf_Internal_Sym *  sym 
) [static]

Definition at line 3079 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;

  htab = elf64_x86_64_hash_table (info);

  if (h->plt.offset != (bfd_vma) -1)
    {
      bfd_vma plt_index;
      bfd_vma got_offset;
      Elf_Internal_Rela rela;
      bfd_byte *loc;

      /* This symbol has an entry in the procedure linkage table.  Set
        it up.        */
      if (h->dynindx == -1
         || htab->splt == NULL
         || htab->sgotplt == NULL
         || htab->srelplt == NULL)
       abort ();

      /* Get the index in the procedure linkage table which
        corresponds to this symbol.  This is the index of this symbol
        in all the symbols for which we are making plt entries.  The
        first entry in the procedure linkage table is reserved.  */
      plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;

      /* Get the offset into the .got table of the entry that
        corresponds to this function.     Each .got entry is GOT_ENTRY_SIZE
        bytes. The first three are reserved for the dynamic linker.  */
      got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;

      /* Fill in the entry in the procedure linkage table.  */
      memcpy (htab->splt->contents + h->plt.offset, elf64_x86_64_plt_entry,
             PLT_ENTRY_SIZE);

      /* Insert the relocation positions of the plt section.  The magic
        numbers at the end of the statements are the positions of the
        relocations in the plt section.  */
      /* Put offset for jmp *name@GOTPCREL(%rip), since the
        instruction uses 6 bytes, subtract this value.  */
      bfd_put_32 (output_bfd,
                    (htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset
                     + got_offset
                     - htab->splt->output_section->vma
                     - htab->splt->output_offset
                     - h->plt.offset
                     - 6),
                htab->splt->contents + h->plt.offset + 2);
      /* Put relocation index.  */
      bfd_put_32 (output_bfd, plt_index,
                htab->splt->contents + h->plt.offset + 7);
      /* Put offset for jmp .PLT0.  */
      bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
                htab->splt->contents + h->plt.offset + 12);

      /* Fill in the entry in the global offset table, initially this
        points to the pushq instruction in the PLT which is at offset 6.  */
      bfd_put_64 (output_bfd, (htab->splt->output_section->vma
                            + htab->splt->output_offset
                            + h->plt.offset + 6),
                htab->sgotplt->contents + got_offset);

      /* Fill in the entry in the .rela.plt section.  */
      rela.r_offset = (htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset
                     + got_offset);
      rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_JUMP_SLOT);
      rela.r_addend = 0;
      loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela);
      bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);

      if (!h->def_regular)
       {
         /* Mark the symbol as undefined, rather than as defined in
            the .plt section.  Leave the value if there were any
            relocations where pointer equality matters (this is a clue
            for the dynamic linker, to make function pointer
            comparisons work between an application and shared
            library), otherwise set it to zero.  If a function is only
            called from a binary, there is no need to slow down
            shared libraries because of that.  */
         sym->st_shndx = SHN_UNDEF;
         if (!h->pointer_equality_needed)
           sym->st_value = 0;
       }
    }

  if (h->got.offset != (bfd_vma) -1
      && ! GOT_TLS_GD_ANY_P (elf64_x86_64_hash_entry (h)->tls_type)
      && elf64_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
    {
      Elf_Internal_Rela rela;
      bfd_byte *loc;

      /* This symbol has an entry in the global offset table.  Set it
        up.  */
      if (htab->sgot == NULL || htab->srelgot == NULL)
       abort ();

      rela.r_offset = (htab->sgot->output_section->vma
                     + htab->sgot->output_offset
                     + (h->got.offset &~ (bfd_vma) 1));

      /* If this is a static link, or it is a -Bsymbolic link and the
        symbol is defined locally or was forced to be local because
        of a version file, we just want to emit a RELATIVE reloc.
        The entry in the global offset table will already have been
        initialized in the relocate_section function.  */
      if (info->shared
         && SYMBOL_REFERENCES_LOCAL (info, h))
       {
         BFD_ASSERT((h->got.offset & 1) != 0);
         rela.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
         rela.r_addend = (h->root.u.def.value
                        + h->root.u.def.section->output_section->vma
                        + h->root.u.def.section->output_offset);
       }
      else
       {
         BFD_ASSERT((h->got.offset & 1) == 0);
         bfd_put_64 (output_bfd, (bfd_vma) 0,
                    htab->sgot->contents + h->got.offset);
         rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_GLOB_DAT);
         rela.r_addend = 0;
       }

      loc = htab->srelgot->contents;
      loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
      bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
    }

  if (h->needs_copy)
    {
      Elf_Internal_Rela rela;
      bfd_byte *loc;

      /* This symbol needs a copy reloc.  Set it up.  */

      if (h->dynindx == -1
         || (h->root.type != bfd_link_hash_defined
             && h->root.type != bfd_link_hash_defweak)
         || htab->srelbss == NULL)
       abort ();

      rela.r_offset = (h->root.u.def.value
                     + h->root.u.def.section->output_section->vma
                     + h->root.u.def.section->output_offset);
      rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_COPY);
      rela.r_addend = 0;
      loc = htab->srelbss->contents;
      loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
      bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
    }

  /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
  if (strcmp (h->root.root.string, "_DYNAMIC") == 0
      || h == htab->elf.hgot)
    sym->st_shndx = SHN_ABS;

  return TRUE;
}

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static asection* elf64_x86_64_gc_mark_hook ( asection sec,
struct bfd_link_info info,
Elf_Internal_Rela rel,
struct elf_link_hash_entry h,
Elf_Internal_Sym *  sym 
) [static]

Definition at line 1153 of file elf64-x86-64.c.

{
  if (h != NULL)
    switch (ELF64_R_TYPE (rel->r_info))
      {
      case R_X86_64_GNU_VTINHERIT:
      case R_X86_64_GNU_VTENTRY:
       return NULL;
      }

  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}

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static bfd_boolean elf64_x86_64_gc_sweep_hook ( bfd abfd,
struct bfd_link_info info,
asection sec,
const Elf_Internal_Rela relocs 
) [static]

Definition at line 1173 of file elf64-x86-64.c.

{
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  bfd_signed_vma *local_got_refcounts;
  const Elf_Internal_Rela *rel, *relend;

  elf_section_data (sec)->local_dynrel = NULL;

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (abfd);
  local_got_refcounts = elf_local_got_refcounts (abfd);

  relend = relocs + sec->reloc_count;
  for (rel = relocs; rel < relend; rel++)
    {
      unsigned long r_symndx;
      unsigned int r_type;
      struct elf_link_hash_entry *h = NULL;

      r_symndx = ELF64_R_SYM (rel->r_info);
      if (r_symndx >= symtab_hdr->sh_info)
       {
         struct elf64_x86_64_link_hash_entry *eh;
         struct elf64_x86_64_dyn_relocs **pp;
         struct elf64_x86_64_dyn_relocs *p;

         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
         while (h->root.type == bfd_link_hash_indirect
               || h->root.type == bfd_link_hash_warning)
           h = (struct elf_link_hash_entry *) h->root.u.i.link;
         eh = (struct elf64_x86_64_link_hash_entry *) h;

         for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
           if (p->sec == sec)
             {
              /* Everything must go for SEC.  */
              *pp = p->next;
              break;
             }
       }

      r_type = ELF64_R_TYPE (rel->r_info);
      r_type = elf64_x86_64_tls_transition (info, r_type, h != NULL);
      switch (r_type)
       {
       case R_X86_64_TLSLD:
         if (elf64_x86_64_hash_table (info)->tls_ld_got.refcount > 0)
           elf64_x86_64_hash_table (info)->tls_ld_got.refcount -= 1;
         break;

       case R_X86_64_TLSGD:
       case R_X86_64_GOTPC32_TLSDESC:
       case R_X86_64_TLSDESC_CALL:
       case R_X86_64_GOTTPOFF:
       case R_X86_64_GOT32:
       case R_X86_64_GOTPCREL:
       case R_X86_64_GOT64:
       case R_X86_64_GOTPCREL64:
       case R_X86_64_GOTPLT64:
         if (h != NULL)
           {
             if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0)
               h->plt.refcount -= 1;
             if (h->got.refcount > 0)
              h->got.refcount -= 1;
           }
         else if (local_got_refcounts != NULL)
           {
             if (local_got_refcounts[r_symndx] > 0)
              local_got_refcounts[r_symndx] -= 1;
           }
         break;

       case R_X86_64_8:
       case R_X86_64_16:
       case R_X86_64_32:
       case R_X86_64_64:
       case R_X86_64_32S:
       case R_X86_64_PC8:
       case R_X86_64_PC16:
       case R_X86_64_PC32:
       case R_X86_64_PC64:
         if (info->shared)
           break;
         /* Fall thru */

       case R_X86_64_PLT32:
       case R_X86_64_PLTOFF64:
         if (h != NULL)
           {
             if (h->plt.refcount > 0)
              h->plt.refcount -= 1;
           }
         break;

       default:
         break;
       }
    }

  return TRUE;
}

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static bfd_boolean elf64_x86_64_grok_prstatus ( bfd abfd,
Elf_Internal_Note note 
) [static]

Definition at line 281 of file elf64-x86-64.c.

{
  int offset;
  size_t size;

  switch (note->descsz)
    {
      default:
       return FALSE;

      case 336:             /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
       /* pr_cursig */
       elf_tdata (abfd)->core_signal
         = bfd_get_16 (abfd, note->descdata + 12);

       /* pr_pid */
       elf_tdata (abfd)->core_pid
         = bfd_get_32 (abfd, note->descdata + 32);

       /* pr_reg */
       offset = 112;
       size = 216;

       break;
    }

  /* Make a ".reg/999" section.  */
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
                                     size, note->descpos + offset);
}

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static bfd_boolean elf64_x86_64_grok_psinfo ( bfd abfd,
Elf_Internal_Note note 
) [static]

Definition at line 313 of file elf64-x86-64.c.

{
  switch (note->descsz)
    {
      default:
       return FALSE;

      case 136:             /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
       elf_tdata (abfd)->core_program
        = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
       elf_tdata (abfd)->core_command
        = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
    }

  /* Note that for some reason, a spurious space is tacked
     onto the end of the args in some (at least one anyway)
     implementations, so strip it off if it exists.  */

  {
    char *command = elf_tdata (abfd)->core_command;
    int n = strlen (command);

    if (0 < n && command[n - 1] == ' ')
      command[n - 1] = '\0';
  }

  return TRUE;
}

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Definition at line 3637 of file elf64-x86-64.c.

{
  if (h->plt.offset != (bfd_vma) -1
      && !h->def_regular
      && !h->pointer_equality_needed)
    return FALSE;

  return _bfd_elf_hash_symbol (h);
}

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static void elf64_x86_64_info_to_howto ( bfd *abfd  ATTRIBUTE_UNUSED,
arelent cache_ptr,
Elf_Internal_Rela dst 
) [static]

Definition at line 269 of file elf64-x86-64.c.

{
  unsigned r_type;

  r_type = ELF64_R_TYPE (dst->r_info);
  cache_ptr->howto = elf64_x86_64_rtype_to_howto (abfd, r_type);
  BFD_ASSERT (r_type == cache_ptr->howto->type);
}

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Definition at line 536 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *ret;
  bfd_size_type amt = sizeof (struct elf64_x86_64_link_hash_table);

  ret = (struct elf64_x86_64_link_hash_table *) bfd_malloc (amt);
  if (ret == NULL)
    return NULL;

  if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
                                  sizeof (struct elf64_x86_64_link_hash_entry)))
    {
      free (ret);
      return NULL;
    }

  ret->sgot = NULL;
  ret->sgotplt = NULL;
  ret->srelgot = NULL;
  ret->splt = NULL;
  ret->srelplt = NULL;
  ret->sdynbss = NULL;
  ret->srelbss = NULL;
  ret->sym_sec.abfd = NULL;
  ret->tlsdesc_plt = 0;
  ret->tlsdesc_got = 0;
  ret->tls_ld_got.refcount = 0;
  ret->sgotplt_jump_table_size = 0;

  return &ret->elf.root;
}

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static bfd_boolean elf64_x86_64_merge_symbol ( struct bfd_link_info *info  ATTRIBUTE_UNUSED,
struct elf_link_hash_entry **sym_hash  ATTRIBUTE_UNUSED,
struct elf_link_hash_entry h,
Elf_Internal_Sym *  sym,
asection **  psec,
bfd_vma *pvalue  ATTRIBUTE_UNUSED,
unsigned int *pold_alignment  ATTRIBUTE_UNUSED,
bfd_boolean *skip  ATTRIBUTE_UNUSED,
bfd_boolean *override  ATTRIBUTE_UNUSED,
bfd_boolean *type_change_ok  ATTRIBUTE_UNUSED,
bfd_boolean *size_change_ok  ATTRIBUTE_UNUSED,
bfd_boolean *newdef  ATTRIBUTE_UNUSED,
bfd_boolean newdyn,
bfd_boolean *newdyncommon  ATTRIBUTE_UNUSED,
bfd_boolean *newweak  ATTRIBUTE_UNUSED,
bfd *abfd  ATTRIBUTE_UNUSED,
asection **  sec,
bfd_boolean *olddef  ATTRIBUTE_UNUSED,
bfd_boolean olddyn,
bfd_boolean *olddyncommon  ATTRIBUTE_UNUSED,
bfd_boolean *oldweak  ATTRIBUTE_UNUSED,
bfd oldbfd,
asection **  oldsec 
) [static]

Definition at line 3564 of file elf64-x86-64.c.

{
  /* A normal common symbol and a large common symbol result in a
     normal common symbol.  We turn the large common symbol into a
     normal one.  */
  if (!*olddyn
      && h->root.type == bfd_link_hash_common
      && !*newdyn
      && bfd_is_com_section (*sec)
      && *oldsec != *sec)
    {
      if (sym->st_shndx == SHN_COMMON
         && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0)
       {
         h->root.u.c.p->section
           = bfd_make_section_old_way (oldbfd, "COMMON");
         h->root.u.c.p->section->flags = SEC_ALLOC;
       }
      else if (sym->st_shndx == SHN_X86_64_LCOMMON
              && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0)
       *psec = *sec = bfd_com_section_ptr; 
    }

  return TRUE;
}

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static bfd_boolean elf64_x86_64_mkobject ( bfd abfd) [static]

Definition at line 694 of file elf64-x86-64.c.

{
  if (abfd->tdata.any == NULL)
    {
      bfd_size_type amt = sizeof (struct elf64_x86_64_obj_tdata);
      abfd->tdata.any = bfd_zalloc (abfd, amt);
      if (abfd->tdata.any == NULL)
       return FALSE;
    }
  return bfd_elf_mkobject (abfd);
}

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static bfd_vma elf64_x86_64_plt_sym_val ( bfd_vma  i,
const asection plt,
const arelent *rel  ATTRIBUTE_UNUSED 
) [static]

Definition at line 3443 of file elf64-x86-64.c.

{
  return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
}
static reloc_howto_type* elf64_x86_64_reloc_name_lookup ( bfd *abfd  ATTRIBUTE_UNUSED,
const char *  r_name 
) [static]

Definition at line 250 of file elf64-x86-64.c.

{
  unsigned int i;

  for (i = 0;
       i < (sizeof (x86_64_elf_howto_table)
           / sizeof (x86_64_elf_howto_table[0]));
       i++)
    if (x86_64_elf_howto_table[i].name != NULL
       && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
      return &x86_64_elf_howto_table[i];

  return NULL;
}

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Definition at line 3250 of file elf64-x86-64.c.

{
  switch ((int) ELF64_R_TYPE (rela->r_info))
    {
    case R_X86_64_RELATIVE:
      return reloc_class_relative;
    case R_X86_64_JUMP_SLOT:
      return reloc_class_plt;
    case R_X86_64_COPY:
      return reloc_class_copy;
    default:
      return reloc_class_normal;
    }
}
static reloc_howto_type* elf64_x86_64_reloc_type_lookup ( bfd abfd,
bfd_reloc_code_real_type  code 
) [static]

Definition at line 234 of file elf64-x86-64.c.

{
  unsigned int i;

  for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
       i++)
    {
      if (x86_64_reloc_map[i].bfd_reloc_val == code)
       return elf64_x86_64_rtype_to_howto (abfd,
                                       x86_64_reloc_map[i].elf_reloc_val);
    }
  return 0;
}

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static bfd_boolean elf64_x86_64_relocate_section ( bfd output_bfd,
struct bfd_link_info info,
bfd input_bfd,
asection input_section,
bfd_byte contents,
Elf_Internal_Rela relocs,
Elf_Internal_Sym *  local_syms,
asection **  local_sections 
) [static]

Definition at line 2068 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  bfd_vma *local_got_offsets;
  bfd_vma *local_tlsdesc_gotents;
  Elf_Internal_Rela *rel;
  Elf_Internal_Rela *relend;

  htab = elf64_x86_64_hash_table (info);
  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (input_bfd);
  local_got_offsets = elf_local_got_offsets (input_bfd);
  local_tlsdesc_gotents = elf64_x86_64_local_tlsdesc_gotent (input_bfd);

  rel = relocs;
  relend = relocs + input_section->reloc_count;
  for (; rel < relend; rel++)
    {
      unsigned int r_type;
      reloc_howto_type *howto;
      unsigned long r_symndx;
      struct elf_link_hash_entry *h;
      Elf_Internal_Sym *sym;
      asection *sec;
      bfd_vma off, offplt;
      bfd_vma relocation;
      bfd_boolean unresolved_reloc;
      bfd_reloc_status_type r;
      int tls_type;

      r_type = ELF64_R_TYPE (rel->r_info);
      if (r_type == (int) R_X86_64_GNU_VTINHERIT
         || r_type == (int) R_X86_64_GNU_VTENTRY)
       continue;

      if (r_type >= R_X86_64_max)
       {
         bfd_set_error (bfd_error_bad_value);
         return FALSE;
       }

      howto = x86_64_elf_howto_table + r_type;
      r_symndx = ELF64_R_SYM (rel->r_info);
      h = NULL;
      sym = NULL;
      sec = NULL;
      unresolved_reloc = FALSE;
      if (r_symndx < symtab_hdr->sh_info)
       {
         sym = local_syms + r_symndx;
         sec = local_sections[r_symndx];

         relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
       }
      else
       {
         bfd_boolean warned;

         RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
                               r_symndx, symtab_hdr, sym_hashes,
                               h, sec, relocation,
                               unresolved_reloc, warned);
       }

      if (sec != NULL && elf_discarded_section (sec))
       {
         /* For relocs against symbols from removed linkonce sections,
            or sections discarded by a linker script, we just want the
            section contents zeroed.  Avoid any special processing.  */
         _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
         rel->r_info = 0;
         rel->r_addend = 0;
         continue;
       }

      if (info->relocatable)
       continue;

      /* When generating a shared object, the relocations handled here are
        copied into the output file to be resolved at run time.  */
      switch (r_type)
       {
       asection *base_got;
       case R_X86_64_GOT32:
       case R_X86_64_GOT64:
         /* Relocation is to the entry for this symbol in the global
            offset table.  */
       case R_X86_64_GOTPCREL:
       case R_X86_64_GOTPCREL64:
         /* Use global offset table entry as symbol value.  */
       case R_X86_64_GOTPLT64:
         /* This is the same as GOT64 for relocation purposes, but
            indicates the existence of a PLT entry.  The difficulty is,
            that we must calculate the GOT slot offset from the PLT
            offset, if this symbol got a PLT entry (it was global).
            Additionally if it's computed from the PLT entry, then that
            GOT offset is relative to .got.plt, not to .got.  */
         base_got = htab->sgot;

         if (htab->sgot == NULL)
           abort ();

         if (h != NULL)
           {
             bfd_boolean dyn;

             off = h->got.offset;
             if (h->needs_plt
                 && h->plt.offset != (bfd_vma)-1
                && off == (bfd_vma)-1)
              {
                /* We can't use h->got.offset here to save
                   state, or even just remember the offset, as
                   finish_dynamic_symbol would use that as offset into
                   .got.  */
                bfd_vma plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
                off = (plt_index + 3) * GOT_ENTRY_SIZE;
                base_got = htab->sgotplt;
              }

             dyn = htab->elf.dynamic_sections_created;

             if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
                || (info->shared
                    && SYMBOL_REFERENCES_LOCAL (info, h))
                || (ELF_ST_VISIBILITY (h->other)
                    && h->root.type == bfd_link_hash_undefweak))
              {
                /* This is actually a static link, or it is a -Bsymbolic
                   link and the symbol is defined locally, or the symbol
                   was forced to be local because of a version file.  We
                   must initialize this entry in the global offset table.
                   Since the offset must always be a multiple of 8, we
                   use the least significant bit to record whether we
                   have initialized it already.

                   When doing a dynamic link, we create a .rela.got
                   relocation entry to initialize the value.   This is
                   done in the finish_dynamic_symbol routine.   */
                if ((off & 1) != 0)
                  off &= ~1;
                else
                  {
                    bfd_put_64 (output_bfd, relocation,
                              base_got->contents + off);
                    /* Note that this is harmless for the GOTPLT64 case,
                       as -1 | 1 still is -1.  */
                    h->got.offset |= 1;
                  }
              }
             else
              unresolved_reloc = FALSE;
           }
         else
           {
             if (local_got_offsets == NULL)
              abort ();

             off = local_got_offsets[r_symndx];

             /* The offset must always be a multiple of 8.  We use
               the least significant bit to record whether we have
               already generated the necessary reloc.    */
             if ((off & 1) != 0)
              off &= ~1;
             else
              {
                bfd_put_64 (output_bfd, relocation,
                           base_got->contents + off);

                if (info->shared)
                  {
                    asection *s;
                    Elf_Internal_Rela outrel;
                    bfd_byte *loc;

                    /* We need to generate a R_X86_64_RELATIVE reloc
                      for the dynamic linker.  */
                    s = htab->srelgot;
                    if (s == NULL)
                     abort ();

                    outrel.r_offset = (base_got->output_section->vma
                                    + base_got->output_offset
                                    + off);
                    outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
                    outrel.r_addend = relocation;
                    loc = s->contents;
                    loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
                    bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
                  }

                local_got_offsets[r_symndx] |= 1;
              }
           }

         if (off >= (bfd_vma) -2)
           abort ();

         relocation = base_got->output_section->vma
                     + base_got->output_offset + off;
         if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64)
           relocation -= htab->sgotplt->output_section->vma
                       - htab->sgotplt->output_offset;

         break;

       case R_X86_64_GOTOFF64:
         /* Relocation is relative to the start of the global offset
            table.  */

         /* Check to make sure it isn't a protected function symbol
            for shared library since it may not be local when used
            as function address.  */
         if (info->shared
             && h
             && h->def_regular
             && h->type == STT_FUNC
             && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
           {
             (*_bfd_error_handler)
              (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"),
               input_bfd, h->root.root.string);
             bfd_set_error (bfd_error_bad_value);
             return FALSE;
           }

         /* Note that sgot is not involved in this
            calculation.  We always want the start of .got.plt.  If we
            defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
            permitted by the ABI, we might have to change this
            calculation.  */
         relocation -= htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset;
         break;

       case R_X86_64_GOTPC32:
       case R_X86_64_GOTPC64:
         /* Use global offset table as symbol value.  */
         relocation = htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset;
         unresolved_reloc = FALSE;
         break;

       case R_X86_64_PLTOFF64:
         /* Relocation is PLT entry relative to GOT.  For local
            symbols it's the symbol itself relative to GOT.  */
          if (h != NULL
             /* See PLT32 handling.  */
             && h->plt.offset != (bfd_vma) -1
             && htab->splt != NULL)
           {
             relocation = (htab->splt->output_section->vma
                         + htab->splt->output_offset
                         + h->plt.offset);
             unresolved_reloc = FALSE;
           }

         relocation -= htab->sgotplt->output_section->vma
                     + htab->sgotplt->output_offset;
         break;

       case R_X86_64_PLT32:
         /* Relocation is to the entry for this symbol in the
            procedure linkage table.  */

         /* Resolve a PLT32 reloc against a local symbol directly,
            without using the procedure linkage table.   */
         if (h == NULL)
           break;

         if (h->plt.offset == (bfd_vma) -1
             || htab->splt == NULL)
           {
             /* We didn't make a PLT entry for this symbol.  This
               happens when statically linking PIC code, or when
               using -Bsymbolic.  */
             break;
           }

         relocation = (htab->splt->output_section->vma
                     + htab->splt->output_offset
                     + h->plt.offset);
         unresolved_reloc = FALSE;
         break;

       case R_X86_64_PC8:
       case R_X86_64_PC16:
       case R_X86_64_PC32:
         if (info->shared
             && !SYMBOL_REFERENCES_LOCAL (info, h)
             && (input_section->flags & SEC_ALLOC) != 0
             && (input_section->flags & SEC_READONLY) != 0
             && (!h->def_regular
                || r_type != R_X86_64_PC32
                || h->type != STT_FUNC
                || ELF_ST_VISIBILITY (h->other) != STV_PROTECTED
                || !is_32bit_relative_branch (contents,
                                          rel->r_offset)))
           {
             if (h->def_regular
                && r_type == R_X86_64_PC32
                && h->type == STT_FUNC
                && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
              (*_bfd_error_handler)
                 (_("%B: relocation R_X86_64_PC32 against protected function `%s' can not be used when making a shared object"),
                  input_bfd, h->root.root.string);
             else
              (*_bfd_error_handler)
                (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
                 input_bfd, x86_64_elf_howto_table[r_type].name,
                 h->root.root.string);
             bfd_set_error (bfd_error_bad_value);
             return FALSE;
           }
         /* Fall through.  */

       case R_X86_64_8:
       case R_X86_64_16:
       case R_X86_64_32:
       case R_X86_64_PC64:
       case R_X86_64_64:
         /* FIXME: The ABI says the linker should make sure the value is
            the same when it's zeroextended to 64 bit.   */

         if ((input_section->flags & SEC_ALLOC) == 0)
           break;

         if ((info->shared
              && (h == NULL
                 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
                 || h->root.type != bfd_link_hash_undefweak)
              && ((r_type != R_X86_64_PC8
                  && r_type != R_X86_64_PC16
                  && r_type != R_X86_64_PC32
                  && r_type != R_X86_64_PC64)
                 || !SYMBOL_CALLS_LOCAL (info, h)))
             || (ELIMINATE_COPY_RELOCS
                && !info->shared
                && h != NULL
                && h->dynindx != -1
                && !h->non_got_ref
                && ((h->def_dynamic
                     && !h->def_regular)
                    || h->root.type == bfd_link_hash_undefweak
                    || h->root.type == bfd_link_hash_undefined)))
           {
             Elf_Internal_Rela outrel;
             bfd_byte *loc;
             bfd_boolean skip, relocate;
             asection *sreloc;

             /* When generating a shared object, these relocations
               are copied into the output file to be resolved at run
               time. */
             skip = FALSE;
             relocate = FALSE;

             outrel.r_offset =
              _bfd_elf_section_offset (output_bfd, info, input_section,
                                    rel->r_offset);
             if (outrel.r_offset == (bfd_vma) -1)
              skip = TRUE;
             else if (outrel.r_offset == (bfd_vma) -2)
              skip = TRUE, relocate = TRUE;

             outrel.r_offset += (input_section->output_section->vma
                              + input_section->output_offset);

             if (skip)
              memset (&outrel, 0, sizeof outrel);

             /* h->dynindx may be -1 if this symbol was marked to
               become local.  */
             else if (h != NULL
                     && h->dynindx != -1
                     && (r_type == R_X86_64_PC8
                        || r_type == R_X86_64_PC16
                        || r_type == R_X86_64_PC32
                        || r_type == R_X86_64_PC64
                        || !info->shared
                        || !SYMBOLIC_BIND (info, h)
                        || !h->def_regular))
              {
                outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
                outrel.r_addend = rel->r_addend;
              }
             else
              {
                /* This symbol is local, or marked to become local.  */
                if (r_type == R_X86_64_64)
                  {
                    relocate = TRUE;
                    outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
                    outrel.r_addend = relocation + rel->r_addend;
                  }
                else
                  {
                    long sindx;

                    if (bfd_is_abs_section (sec))
                     sindx = 0;
                    else if (sec == NULL || sec->owner == NULL)
                     {
                       bfd_set_error (bfd_error_bad_value);
                       return FALSE;
                     }
                    else
                     {
                       asection *osec;

                       /* We are turning this relocation into one
                          against a section symbol.  It would be
                          proper to subtract the symbol's value,
                          osec->vma, from the emitted reloc addend,
                          but ld.so expects buggy relocs.  */
                       osec = sec->output_section;
                       sindx = elf_section_data (osec)->dynindx;
                       if (sindx == 0)
                         {
                           asection *oi = htab->elf.text_index_section;
                           sindx = elf_section_data (oi)->dynindx;
                         }
                       BFD_ASSERT (sindx != 0);
                     }

                    outrel.r_info = ELF64_R_INFO (sindx, r_type);
                    outrel.r_addend = relocation + rel->r_addend;
                  }
              }

             sreloc = elf_section_data (input_section)->sreloc;
             if (sreloc == NULL)
              abort ();

             loc = sreloc->contents;
             loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
             bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);

             /* If this reloc is against an external symbol, we do
               not want to fiddle with the addend.  Otherwise, we
               need to include the symbol value so that it becomes
               an addend for the dynamic reloc.  */
             if (! relocate)
              continue;
           }

         break;

       case R_X86_64_TLSGD:
       case R_X86_64_GOTPC32_TLSDESC:
       case R_X86_64_TLSDESC_CALL:
       case R_X86_64_GOTTPOFF:
         r_type = elf64_x86_64_tls_transition (info, r_type, h == NULL);
         tls_type = GOT_UNKNOWN;
         if (h == NULL && local_got_offsets)
           tls_type = elf64_x86_64_local_got_tls_type (input_bfd) [r_symndx];
         else if (h != NULL)
           {
             tls_type = elf64_x86_64_hash_entry (h)->tls_type;
             if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
              r_type = R_X86_64_TPOFF32;
           }
         if (r_type == R_X86_64_TLSGD
             || r_type == R_X86_64_GOTPC32_TLSDESC
             || r_type == R_X86_64_TLSDESC_CALL)
           {
             if (tls_type == GOT_TLS_IE)
              r_type = R_X86_64_GOTTPOFF;
           }

         if (r_type == R_X86_64_TPOFF32)
           {
             BFD_ASSERT (! unresolved_reloc);
             if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
              {
                unsigned int i;
                static unsigned char tlsgd[8]
                  = { 0x66, 0x48, 0x8d, 0x3d, 0x66, 0x66, 0x48, 0xe8 };

                /* GD->LE transition.
                   .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                   .word 0x6666; rex64; call __tls_get_addr@plt
                   Change it into:
                   movq %fs:0, %rax
                   leaq foo@tpoff(%rax), %rax */
                BFD_ASSERT (rel->r_offset >= 4);
                for (i = 0; i < 4; i++)
                  BFD_ASSERT (bfd_get_8 (input_bfd,
                                      contents + rel->r_offset - 4 + i)
                            == tlsgd[i]);
                BFD_ASSERT (rel->r_offset + 12 <= input_section->size);
                for (i = 0; i < 4; i++)
                  BFD_ASSERT (bfd_get_8 (input_bfd,
                                      contents + rel->r_offset + 4 + i)
                            == tlsgd[i+4]);
                BFD_ASSERT (rel + 1 < relend);
                BFD_ASSERT (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32);
                memcpy (contents + rel->r_offset - 4,
                       "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
                       16);
                bfd_put_32 (output_bfd, tpoff (info, relocation),
                           contents + rel->r_offset + 8);
                /* Skip R_X86_64_PLT32.  */
                rel++;
                continue;
              }
             else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
              {
                /* GDesc -> LE transition.
                   It's originally something like:
                   leaq x@tlsdesc(%rip), %rax

                   Change it to:
                   movl $x@tpoff, %rax

                   Registers other than %rax may be set up here.  */

                unsigned int val, type, type2;
                bfd_vma roff;

                /* First, make sure it's a leaq adding rip to a
                   32-bit offset into any register, although it's
                   probably almost always going to be rax.  */
                roff = rel->r_offset;
                BFD_ASSERT (roff >= 3);
                type = bfd_get_8 (input_bfd, contents + roff - 3);
                BFD_ASSERT ((type & 0xfb) == 0x48);
                type2 = bfd_get_8 (input_bfd, contents + roff - 2);
                BFD_ASSERT (type2 == 0x8d);
                val = bfd_get_8 (input_bfd, contents + roff - 1);
                BFD_ASSERT ((val & 0xc7) == 0x05);
                BFD_ASSERT (roff + 4 <= input_section->size);

                /* Now modify the instruction as appropriate.  */
                bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
                          contents + roff - 3);
                bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
                bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
                          contents + roff - 1);
                bfd_put_32 (output_bfd, tpoff (info, relocation),
                           contents + roff);
                continue;
              }
             else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
              {
                /* GDesc -> LE transition.
                   It's originally:
                   call *(%rax)
                   Turn it into:
                   nop; nop.  */

                unsigned int val, type;
                bfd_vma roff;

                /* First, make sure it's a call *(%rax).  */
                roff = rel->r_offset;
                BFD_ASSERT (roff + 2 <= input_section->size);
                type = bfd_get_8 (input_bfd, contents + roff);
                BFD_ASSERT (type == 0xff);
                val = bfd_get_8 (input_bfd, contents + roff + 1);
                BFD_ASSERT (val == 0x10);

                /* Now modify the instruction as appropriate.  Use
                   xchg %ax,%ax instead of 2 nops.  */
                bfd_put_8 (output_bfd, 0x66, contents + roff);
                bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
                continue;
              }
             else
              {
                unsigned int val, type, reg;

                /* IE->LE transition:
                   Originally it can be one of:
                   movq foo@gottpoff(%rip), %reg
                   addq foo@gottpoff(%rip), %reg
                   We change it into:
                   movq $foo, %reg
                   leaq foo(%reg), %reg
                   addq $foo, %reg.  */
                BFD_ASSERT (rel->r_offset >= 3);
                val = bfd_get_8 (input_bfd, contents + rel->r_offset - 3);
                BFD_ASSERT (val == 0x48 || val == 0x4c);
                type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
                BFD_ASSERT (type == 0x8b || type == 0x03);
                reg = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
                BFD_ASSERT ((reg & 0xc7) == 5);
                reg >>= 3;
                BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
                if (type == 0x8b)
                  {
                    /* movq */
                    if (val == 0x4c)
                     bfd_put_8 (output_bfd, 0x49,
                               contents + rel->r_offset - 3);
                    bfd_put_8 (output_bfd, 0xc7,
                             contents + rel->r_offset - 2);
                    bfd_put_8 (output_bfd, 0xc0 | reg,
                             contents + rel->r_offset - 1);
                  }
                else if (reg == 4)
                  {
                    /* addq -> addq - addressing with %rsp/%r12 is
                      special  */
                    if (val == 0x4c)
                     bfd_put_8 (output_bfd, 0x49,
                               contents + rel->r_offset - 3);
                    bfd_put_8 (output_bfd, 0x81,
                             contents + rel->r_offset - 2);
                    bfd_put_8 (output_bfd, 0xc0 | reg,
                             contents + rel->r_offset - 1);
                  }
                else
                  {
                    /* addq -> leaq */
                    if (val == 0x4c)
                     bfd_put_8 (output_bfd, 0x4d,
                               contents + rel->r_offset - 3);
                    bfd_put_8 (output_bfd, 0x8d,
                             contents + rel->r_offset - 2);
                    bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
                             contents + rel->r_offset - 1);
                  }
                bfd_put_32 (output_bfd, tpoff (info, relocation),
                           contents + rel->r_offset);
                continue;
              }
           }

         if (htab->sgot == NULL)
           abort ();

         if (h != NULL)
           {
             off = h->got.offset;
             offplt = elf64_x86_64_hash_entry (h)->tlsdesc_got;
           }
         else
           {
             if (local_got_offsets == NULL)
              abort ();

             off = local_got_offsets[r_symndx];
             offplt = local_tlsdesc_gotents[r_symndx];
           }

         if ((off & 1) != 0)
           off &= ~1;
         else
           {
             Elf_Internal_Rela outrel;
             bfd_byte *loc;
             int dr_type, indx;
             asection *sreloc;

             if (htab->srelgot == NULL)
              abort ();

             indx = h && h->dynindx != -1 ? h->dynindx : 0;

             if (GOT_TLS_GDESC_P (tls_type))
              {
                outrel.r_info = ELF64_R_INFO (indx, R_X86_64_TLSDESC);
                BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
                           + 2 * GOT_ENTRY_SIZE <= htab->sgotplt->size);
                outrel.r_offset = (htab->sgotplt->output_section->vma
                                 + htab->sgotplt->output_offset
                                 + offplt
                                 + htab->sgotplt_jump_table_size);
                sreloc = htab->srelplt;
                loc = sreloc->contents;
                loc += sreloc->reloc_count++
                  * sizeof (Elf64_External_Rela);
                BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
                           <= sreloc->contents + sreloc->size);
                if (indx == 0)
                  outrel.r_addend = relocation - dtpoff_base (info);
                else
                  outrel.r_addend = 0;
                bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
              }

             sreloc = htab->srelgot;

             outrel.r_offset = (htab->sgot->output_section->vma
                             + htab->sgot->output_offset + off);

             if (GOT_TLS_GD_P (tls_type))
              dr_type = R_X86_64_DTPMOD64;
             else if (GOT_TLS_GDESC_P (tls_type))
              goto dr_done;
             else
              dr_type = R_X86_64_TPOFF64;

             bfd_put_64 (output_bfd, 0, htab->sgot->contents + off);
             outrel.r_addend = 0;
             if ((dr_type == R_X86_64_TPOFF64
                 || dr_type == R_X86_64_TLSDESC) && indx == 0)
              outrel.r_addend = relocation - dtpoff_base (info);
             outrel.r_info = ELF64_R_INFO (indx, dr_type);

             loc = sreloc->contents;
             loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
             BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
                       <= sreloc->contents + sreloc->size);
             bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);

             if (GOT_TLS_GD_P (tls_type))
              {
                if (indx == 0)
                  {
                    BFD_ASSERT (! unresolved_reloc);
                    bfd_put_64 (output_bfd,
                              relocation - dtpoff_base (info),
                              htab->sgot->contents + off + GOT_ENTRY_SIZE);
                  }
                else
                  {
                    bfd_put_64 (output_bfd, 0,
                              htab->sgot->contents + off + GOT_ENTRY_SIZE);
                    outrel.r_info = ELF64_R_INFO (indx,
                                              R_X86_64_DTPOFF64);
                    outrel.r_offset += GOT_ENTRY_SIZE;
                    sreloc->reloc_count++;
                    loc += sizeof (Elf64_External_Rela);
                    BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
                              <= sreloc->contents + sreloc->size);
                    bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
                  }
              }

           dr_done:
             if (h != NULL)
              h->got.offset |= 1;
             else
              local_got_offsets[r_symndx] |= 1;
           }

         if (off >= (bfd_vma) -2
             && ! GOT_TLS_GDESC_P (tls_type))
           abort ();
         if (r_type == ELF64_R_TYPE (rel->r_info))
           {
             if (r_type == R_X86_64_GOTPC32_TLSDESC
                || r_type == R_X86_64_TLSDESC_CALL)
              relocation = htab->sgotplt->output_section->vma
                + htab->sgotplt->output_offset
                + offplt + htab->sgotplt_jump_table_size;
             else
              relocation = htab->sgot->output_section->vma
                + htab->sgot->output_offset + off;
             unresolved_reloc = FALSE;
           }
         else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
           {
             unsigned int i;
             static unsigned char tlsgd[8]
              = { 0x66, 0x48, 0x8d, 0x3d, 0x66, 0x66, 0x48, 0xe8 };

             /* GD->IE transition.
               .byte 0x66; leaq foo@tlsgd(%rip), %rdi
               .word 0x6666; rex64; call __tls_get_addr@plt
               Change it into:
               movq %fs:0, %rax
               addq foo@gottpoff(%rip), %rax */
             BFD_ASSERT (rel->r_offset >= 4);
             for (i = 0; i < 4; i++)
              BFD_ASSERT (bfd_get_8 (input_bfd,
                                   contents + rel->r_offset - 4 + i)
                         == tlsgd[i]);
             BFD_ASSERT (rel->r_offset + 12 <= input_section->size);
             for (i = 0; i < 4; i++)
              BFD_ASSERT (bfd_get_8 (input_bfd,
                                   contents + rel->r_offset + 4 + i)
                         == tlsgd[i+4]);
             BFD_ASSERT (rel + 1 < relend);
             BFD_ASSERT (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32);
             memcpy (contents + rel->r_offset - 4,
                    "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
                    16);

             relocation = (htab->sgot->output_section->vma
                         + htab->sgot->output_offset + off
                         - rel->r_offset
                         - input_section->output_section->vma
                         - input_section->output_offset
                         - 12);
             bfd_put_32 (output_bfd, relocation,
                       contents + rel->r_offset + 8);
             /* Skip R_X86_64_PLT32.  */
             rel++;
             continue;
           }
         else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
           {
             /* GDesc -> IE transition.
               It's originally something like:
               leaq x@tlsdesc(%rip), %rax

               Change it to:
               movq x@gottpoff(%rip), %rax # before nop; nop

               Registers other than %rax may be set up here.  */

             unsigned int val, type, type2;
             bfd_vma roff;

             /* First, make sure it's a leaq adding rip to a 32-bit
               offset into any register, although it's probably
               almost always going to be rax.  */
             roff = rel->r_offset;
             BFD_ASSERT (roff >= 3);
             type = bfd_get_8 (input_bfd, contents + roff - 3);
             BFD_ASSERT ((type & 0xfb) == 0x48);
             type2 = bfd_get_8 (input_bfd, contents + roff - 2);
             BFD_ASSERT (type2 == 0x8d);
             val = bfd_get_8 (input_bfd, contents + roff - 1);
             BFD_ASSERT ((val & 0xc7) == 0x05);
             BFD_ASSERT (roff + 4 <= input_section->size);

             /* Now modify the instruction as appropriate.  */
             /* To turn a leaq into a movq in the form we use it, it
               suffices to change the second byte from 0x8d to
               0x8b.  */
             bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);

             bfd_put_32 (output_bfd,
                       htab->sgot->output_section->vma
                       + htab->sgot->output_offset + off
                       - rel->r_offset
                       - input_section->output_section->vma
                       - input_section->output_offset
                       - 4,
                       contents + roff);
             continue;
           }
         else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
           {
             /* GDesc -> IE transition.
               It's originally:
               call *(%rax)

               Change it to:
               nop; nop.  */

             unsigned int val, type;
             bfd_vma roff;

             /* First, make sure it's a call *(%eax).  */
             roff = rel->r_offset;
             BFD_ASSERT (roff + 2 <= input_section->size);
             type = bfd_get_8 (input_bfd, contents + roff);
             BFD_ASSERT (type == 0xff);
             val = bfd_get_8 (input_bfd, contents + roff + 1);
             BFD_ASSERT (val == 0x10);

             /* Now modify the instruction as appropriate.  Use
               xchg %ax,%ax instead of 2 nops.  */
             bfd_put_8 (output_bfd, 0x66, contents + roff);
             bfd_put_8 (output_bfd, 0x90, contents + roff + 1);

             continue;
           }
         else
           BFD_ASSERT (FALSE);
         break;

       case R_X86_64_TLSLD:
         if (! info->shared)
           {
             /* LD->LE transition:
               Ensure it is:
               leaq foo@tlsld(%rip), %rdi; call __tls_get_addr@plt.
               We change it into:
               .word 0x6666; .byte 0x66; movl %fs:0, %rax.  */
             BFD_ASSERT (rel->r_offset >= 3);
             BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 3)
                       == 0x48);
             BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
                       == 0x8d);
             BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 1)
                       == 0x3d);
             BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
             BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
                       == 0xe8);
             BFD_ASSERT (rel + 1 < relend);
             BFD_ASSERT (ELF64_R_TYPE (rel[1].r_info) == R_X86_64_PLT32);
             memcpy (contents + rel->r_offset - 3,
                    "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
             /* Skip R_X86_64_PLT32.  */
             rel++;
             continue;
           }

         if (htab->sgot == NULL)
           abort ();

         off = htab->tls_ld_got.offset;
         if (off & 1)
           off &= ~1;
         else
           {
             Elf_Internal_Rela outrel;
             bfd_byte *loc;

             if (htab->srelgot == NULL)
              abort ();

             outrel.r_offset = (htab->sgot->output_section->vma
                             + htab->sgot->output_offset + off);

             bfd_put_64 (output_bfd, 0,
                       htab->sgot->contents + off);
             bfd_put_64 (output_bfd, 0,
                       htab->sgot->contents + off + GOT_ENTRY_SIZE);
             outrel.r_info = ELF64_R_INFO (0, R_X86_64_DTPMOD64);
             outrel.r_addend = 0;
             loc = htab->srelgot->contents;
             loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
             bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
             htab->tls_ld_got.offset |= 1;
           }
         relocation = htab->sgot->output_section->vma
                     + htab->sgot->output_offset + off;
         unresolved_reloc = FALSE;
         break;

       case R_X86_64_DTPOFF32:
         if (info->shared || (input_section->flags & SEC_CODE) == 0)
           relocation -= dtpoff_base (info);
         else
           relocation = tpoff (info, relocation);
         break;

       case R_X86_64_TPOFF32:
         BFD_ASSERT (! info->shared);
         relocation = tpoff (info, relocation);
         break;

       default:
         break;
       }

      /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
        because such sections are not SEC_ALLOC and thus ld.so will
        not process them.  */
      if (unresolved_reloc
         && !((input_section->flags & SEC_DEBUGGING) != 0
              && h->def_dynamic))
       (*_bfd_error_handler)
         (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
          input_bfd,
          input_section,
          (long) rel->r_offset,
          howto->name,
          h->root.root.string);

      r = _bfd_final_link_relocate (howto, input_bfd, input_section,
                                contents, rel->r_offset,
                                relocation, rel->r_addend);

      if (r != bfd_reloc_ok)
       {
         const char *name;

         if (h != NULL)
           name = h->root.root.string;
         else
           {
             name = bfd_elf_string_from_elf_section (input_bfd,
                                                symtab_hdr->sh_link,
                                                sym->st_name);
             if (name == NULL)
              return FALSE;
             if (*name == '\0')
              name = bfd_section_name (input_bfd, sec);
           }

         if (r == bfd_reloc_overflow)
           {
             if (! ((*info->callbacks->reloc_overflow)
                   (info, (h ? &h->root : NULL), name, howto->name,
                    (bfd_vma) 0, input_bfd, input_section,
                    rel->r_offset)))
              return FALSE;
           }
         else
           {
             (*_bfd_error_handler)
              (_("%B(%A+0x%lx): reloc against `%s': error %d"),
               input_bfd, input_section,
               (long) rel->r_offset, name, (int) r);
             return FALSE;
           }
       }
    }

  return TRUE;
}

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static reloc_howto_type* elf64_x86_64_rtype_to_howto ( bfd abfd,
unsigned  r_type 
) [static]

Definition at line 211 of file elf64-x86-64.c.

{
  unsigned i;

  if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
      || r_type >= (unsigned int) R_X86_64_max)
    {
      if (r_type >= (unsigned int) R_X86_64_standard)
       {
         (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
                             abfd, (int) r_type);
         r_type = R_X86_64_NONE;
       }
      i = r_type;
    }
  else
    i = r_type - (unsigned int) R_X86_64_vt_offset;
  BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
  return &x86_64_elf_howto_table[i];
}

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static bfd_boolean elf64_x86_64_section_from_shdr ( bfd abfd,
Elf_Internal_Shdr hdr,
const char *  name,
int  shindex 
) [static]

Definition at line 3453 of file elf64-x86-64.c.

{
  if (hdr->sh_type != SHT_X86_64_UNWIND)
    return FALSE;

  if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
    return FALSE;

  return TRUE;
}

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static bfd_boolean elf64_x86_64_size_dynamic_sections ( bfd *output_bfd  ATTRIBUTE_UNUSED,
struct bfd_link_info info 
) [static]

Definition at line 1705 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_table *htab;
  bfd *dynobj;
  asection *s;
  bfd_boolean relocs;
  bfd *ibfd;

  htab = elf64_x86_64_hash_table (info);
  dynobj = htab->elf.dynobj;
  if (dynobj == NULL)
    abort ();

  if (htab->elf.dynamic_sections_created)
    {
      /* Set the contents of the .interp section to the interpreter.  */
      if (info->executable)
       {
         s = bfd_get_section_by_name (dynobj, ".interp");
         if (s == NULL)
           abort ();
         s->size = sizeof ELF_DYNAMIC_INTERPRETER;
         s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
       }
    }

  /* Set up .got offsets for local syms, and space for local dynamic
     relocs.  */
  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
    {
      bfd_signed_vma *local_got;
      bfd_signed_vma *end_local_got;
      char *local_tls_type;
      bfd_vma *local_tlsdesc_gotent;
      bfd_size_type locsymcount;
      Elf_Internal_Shdr *symtab_hdr;
      asection *srel;

      if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
       continue;

      for (s = ibfd->sections; s != NULL; s = s->next)
       {
         struct elf64_x86_64_dyn_relocs *p;

         for (p = (struct elf64_x86_64_dyn_relocs *)
                  (elf_section_data (s)->local_dynrel);
              p != NULL;
              p = p->next)
           {
             if (!bfd_is_abs_section (p->sec)
                && bfd_is_abs_section (p->sec->output_section))
              {
                /* Input section has been discarded, either because
                   it is a copy of a linkonce section or due to
                   linker script /DISCARD/, so we'll be discarding
                   the relocs too.  */
              }
             else if (p->count != 0)
              {
                srel = elf_section_data (p->sec)->sreloc;
                srel->size += p->count * sizeof (Elf64_External_Rela);
                if ((p->sec->output_section->flags & SEC_READONLY) != 0)
                  info->flags |= DF_TEXTREL;

              }
           }
       }

      local_got = elf_local_got_refcounts (ibfd);
      if (!local_got)
       continue;

      symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
      locsymcount = symtab_hdr->sh_info;
      end_local_got = local_got + locsymcount;
      local_tls_type = elf64_x86_64_local_got_tls_type (ibfd);
      local_tlsdesc_gotent = elf64_x86_64_local_tlsdesc_gotent (ibfd);
      s = htab->sgot;
      srel = htab->srelgot;
      for (; local_got < end_local_got;
          ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
       {
         *local_tlsdesc_gotent = (bfd_vma) -1;
         if (*local_got > 0)
           {
             if (GOT_TLS_GDESC_P (*local_tls_type))
              {
                *local_tlsdesc_gotent = htab->sgotplt->size
                  - elf64_x86_64_compute_jump_table_size (htab);
                htab->sgotplt->size += 2 * GOT_ENTRY_SIZE;
                *local_got = (bfd_vma) -2;
              }
             if (! GOT_TLS_GDESC_P (*local_tls_type)
                || GOT_TLS_GD_P (*local_tls_type))
              {
                *local_got = s->size;
                s->size += GOT_ENTRY_SIZE;
                if (GOT_TLS_GD_P (*local_tls_type))
                  s->size += GOT_ENTRY_SIZE;
              }
             if (info->shared
                || GOT_TLS_GD_ANY_P (*local_tls_type)
                || *local_tls_type == GOT_TLS_IE)
              {
                if (GOT_TLS_GDESC_P (*local_tls_type))
                  {
                    htab->srelplt->size += sizeof (Elf64_External_Rela);
                    htab->tlsdesc_plt = (bfd_vma) -1;
                  }
                if (! GOT_TLS_GDESC_P (*local_tls_type)
                    || GOT_TLS_GD_P (*local_tls_type))
                  srel->size += sizeof (Elf64_External_Rela);
              }
           }
         else
           *local_got = (bfd_vma) -1;
       }
    }

  if (htab->tls_ld_got.refcount > 0)
    {
      /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD
        relocs.  */
      htab->tls_ld_got.offset = htab->sgot->size;
      htab->sgot->size += 2 * GOT_ENTRY_SIZE;
      htab->srelgot->size += sizeof (Elf64_External_Rela);
    }
  else
    htab->tls_ld_got.offset = -1;

  /* Allocate global sym .plt and .got entries, and space for global
     sym dynamic relocs.  */
  elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);

  /* For every jump slot reserved in the sgotplt, reloc_count is
     incremented.  However, when we reserve space for TLS descriptors,
     it's not incremented, so in order to compute the space reserved
     for them, it suffices to multiply the reloc count by the jump
     slot size.  */
  if (htab->srelplt)
    htab->sgotplt_jump_table_size
      = elf64_x86_64_compute_jump_table_size (htab);

  if (htab->tlsdesc_plt)
    {
      /* If we're not using lazy TLS relocations, don't generate the
        PLT and GOT entries they require.  */
      if ((info->flags & DF_BIND_NOW))
       htab->tlsdesc_plt = 0;
      else
       {
         htab->tlsdesc_got = htab->sgot->size;
         htab->sgot->size += GOT_ENTRY_SIZE;
         /* Reserve room for the initial entry.
            FIXME: we could probably do away with it in this case.  */
         if (htab->splt->size == 0)
           htab->splt->size += PLT_ENTRY_SIZE;
         htab->tlsdesc_plt = htab->splt->size;
         htab->splt->size += PLT_ENTRY_SIZE;
       }
    }

  /* We now have determined the sizes of the various dynamic sections.
     Allocate memory for them.  */
  relocs = FALSE;
  for (s = dynobj->sections; s != NULL; s = s->next)
    {
      if ((s->flags & SEC_LINKER_CREATED) == 0)
       continue;

      if (s == htab->splt
         || s == htab->sgot
         || s == htab->sgotplt
         || s == htab->sdynbss)
       {
         /* Strip this section if we don't need it; see the
            comment below.  */
       }
      else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
       {
         if (s->size != 0 && s != htab->srelplt)
           relocs = TRUE;

         /* We use the reloc_count field as a counter if we need
            to copy relocs into the output file.  */
         if (s != htab->srelplt)
           s->reloc_count = 0;
       }
      else
       {
         /* It's not one of our sections, so don't allocate space.  */
         continue;
       }

      if (s->size == 0)
       {
         /* If we don't need this section, strip it from the
            output file.  This is mostly to handle .rela.bss and
            .rela.plt.  We must create both sections in
            create_dynamic_sections, because they must be created
            before the linker maps input sections to output
            sections.  The linker does that before
            adjust_dynamic_symbol is called, and it is that
            function which decides whether anything needs to go
            into these sections.  */

         s->flags |= SEC_EXCLUDE;
         continue;
       }

      if ((s->flags & SEC_HAS_CONTENTS) == 0)
       continue;

      /* Allocate memory for the section contents.  We use bfd_zalloc
        here in case unused entries are not reclaimed before the
        section's contents are written out.  This should not happen,
        but this way if it does, we get a R_X86_64_NONE reloc instead
        of garbage.  */
      s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
      if (s->contents == NULL)
       return FALSE;
    }

  if (htab->elf.dynamic_sections_created)
    {
      /* Add some entries to the .dynamic section.  We fill in the
        values later, in elf64_x86_64_finish_dynamic_sections, but we
        must add the entries now so that we get the correct size for
        the .dynamic section.      The DT_DEBUG entry is filled in by the
        dynamic linker and used by the debugger.  */
#define add_dynamic_entry(TAG, VAL) \
  _bfd_elf_add_dynamic_entry (info, TAG, VAL)

      if (info->executable)
       {
         if (!add_dynamic_entry (DT_DEBUG, 0))
           return FALSE;
       }

      if (htab->splt->size != 0)
       {
         if (!add_dynamic_entry (DT_PLTGOT, 0)
             || !add_dynamic_entry (DT_PLTRELSZ, 0)
             || !add_dynamic_entry (DT_PLTREL, DT_RELA)
             || !add_dynamic_entry (DT_JMPREL, 0))
           return FALSE;

         if (htab->tlsdesc_plt
             && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
                || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
           return FALSE;
       }

      if (relocs)
       {
         if (!add_dynamic_entry (DT_RELA, 0)
             || !add_dynamic_entry (DT_RELASZ, 0)
             || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
           return FALSE;

         /* If any dynamic relocs apply to a read-only section,
            then we need a DT_TEXTREL entry.  */
         if ((info->flags & DF_TEXTREL) == 0)
           elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
                                (PTR) info);

         if ((info->flags & DF_TEXTREL) != 0)
           {
             if (!add_dynamic_entry (DT_TEXTREL, 0))
              return FALSE;
           }
       }
    }
#undef add_dynamic_entry

  return TRUE;
}

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static void elf64_x86_64_symbol_processing ( bfd *abfd  ATTRIBUTE_UNUSED,
asymbol asym 
) [static]

Definition at line 3522 of file elf64-x86-64.c.

{
  elf_symbol_type *elfsym = (elf_symbol_type *) asym;

  switch (elfsym->internal_elf_sym.st_shndx)
    {
    case SHN_X86_64_LCOMMON:
      asym->section = &_bfd_elf_large_com_section;
      asym->value = elfsym->internal_elf_sym.st_size;
      /* Common symbol doesn't set BSF_GLOBAL.  */
      asym->flags &= ~BSF_GLOBAL;
      break;
    }
}
static int elf64_x86_64_tls_transition ( struct bfd_link_info info,
int  r_type,
int  is_local 
) [static]

Definition at line 715 of file elf64-x86-64.c.

{
  if (info->shared)
    return r_type;

  switch (r_type)
    {
    case R_X86_64_TLSGD:
    case R_X86_64_GOTPC32_TLSDESC:
    case R_X86_64_TLSDESC_CALL:
    case R_X86_64_GOTTPOFF:
      if (is_local)
       return R_X86_64_TPOFF32;
      return R_X86_64_GOTTPOFF;
    case R_X86_64_TLSLD:
      return R_X86_64_TPOFF32;
    }

   return r_type;
}

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static bfd_boolean is_32bit_relative_branch ( bfd_byte contents,
bfd_vma  offset 
) [static]

Definition at line 2051 of file elf64-x86-64.c.

{
  /* Opcode          Instruction
     0xe8            call
     0xe9            jump
     0x0f 0x8x              conditional jump */
  return ((offset > 0
          && (contents [offset - 1] == 0xe8
              || contents [offset - 1] == 0xe9))
         || (offset > 1
             && contents [offset - 2] == 0x0f
             && (contents [offset - 1] & 0xf0) == 0x80));
}

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static struct bfd_hash_entry* link_hash_newfunc ( struct bfd_hash_entry entry,
struct bfd_hash_table table,
const char *  string 
) [static, read]

Definition at line 505 of file elf64-x86-64.c.

{
  /* Allocate the structure if it has not already been allocated by a
     subclass.  */
  if (entry == NULL)
    {
      entry = bfd_hash_allocate (table,
                             sizeof (struct elf64_x86_64_link_hash_entry));
      if (entry == NULL)
       return entry;
    }

  /* Call the allocation method of the superclass.  */
  entry = _bfd_elf_link_hash_newfunc (entry, table, string);
  if (entry != NULL)
    {
      struct elf64_x86_64_link_hash_entry *eh;

      eh = (struct elf64_x86_64_link_hash_entry *) entry;
      eh->dyn_relocs = NULL;
      eh->tls_type = GOT_UNKNOWN;
      eh->tlsdesc_got = (bfd_vma) -1;
    }

  return entry;
}

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static bfd_boolean readonly_dynrelocs ( struct elf_link_hash_entry h,
void *  inf 
) [static]

Definition at line 1676 of file elf64-x86-64.c.

{
  struct elf64_x86_64_link_hash_entry *eh;
  struct elf64_x86_64_dyn_relocs *p;

  if (h->root.type == bfd_link_hash_warning)
    h = (struct elf_link_hash_entry *) h->root.u.i.link;

  eh = (struct elf64_x86_64_link_hash_entry *) h;
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
    {
      asection *s = p->sec->output_section;

      if (s != NULL && (s->flags & SEC_READONLY) != 0)
       {
         struct bfd_link_info *info = (struct bfd_link_info *) inf;

         info->flags |= DF_TEXTREL;

         /* Not an error, just cut short the traversal.  */
         return FALSE;
       }
    }
  return TRUE;
}

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static bfd_vma tpoff ( struct bfd_link_info info,
bfd_vma  address 
) [static]

Definition at line 2037 of file elf64-x86-64.c.

{
  struct elf_link_hash_table *htab = elf_hash_table (info);

  /* If tls_segment is NULL, we should have signalled an error already.  */
  if (htab->tls_sec == NULL)
    return 0;
  return address - htab->tls_size - htab->tls_sec->vma;
}

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Variable Documentation

Initial value:

Definition at line 3648 of file elf64-x86-64.c.

Initial value:
{
  0xff, 0x35, 8, 0, 0, 0,   
  0xff, 0x25, 16, 0, 0, 0,  
  0x0f, 0x1f, 0x40, 0x00    
}

Definition at line 366 of file elf64-x86-64.c.

Initial value:
{
  0xff, 0x25, 
  0, 0, 0, 0, 
  0x68,              
  0, 0, 0, 0, 
  0xe9,              
  0, 0, 0, 0  
}

Definition at line 375 of file elf64-x86-64.c.

struct elf_reloc_map[] [static]

Definition at line 169 of file elf64-x86-64.c.

reloc_howto_type x86_64_elf_howto_table[] [static]

Definition at line 36 of file elf64-x86-64.c.