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cell-binutils  2.17cvs20070401
Classes | Defines | Functions | Variables
elf64-s390.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/s390.h"
#include "elf64-target.h"

Go to the source code of this file.

Classes

struct  elf_s390_dyn_relocs
struct  elf_s390_link_hash_entry
struct  elf_s390_obj_tdata

Defines

#define MINUS_ONE   (((bfd_vma)0) - 1)
#define ELF_DYNAMIC_INTERPRETER   "/usr/lib/ld.so.1"
#define ELIMINATE_COPY_RELOCS   1
#define PLT_FIRST_ENTRY_SIZE   32
#define PLT_ENTRY_SIZE   32
#define GOT_ENTRY_SIZE   8
#define PLT_ENTRY_WORD0   (bfd_vma) 0xc0100000
#define PLT_ENTRY_WORD1   (bfd_vma) 0x0000e310
#define PLT_ENTRY_WORD2   (bfd_vma) 0x10000004
#define PLT_ENTRY_WORD3   (bfd_vma) 0x07f10d10
#define PLT_ENTRY_WORD4   (bfd_vma) 0xe310100c
#define PLT_ENTRY_WORD5   (bfd_vma) 0x0014c0f4
#define PLT_ENTRY_WORD6   (bfd_vma) 0x00000000
#define PLT_ENTRY_WORD7   (bfd_vma) 0x00000000
#define PLT_FIRST_ENTRY_WORD0   (bfd_vma) 0xe310f038
#define PLT_FIRST_ENTRY_WORD1   (bfd_vma) 0x0024c010
#define PLT_FIRST_ENTRY_WORD2   (bfd_vma) 0x00000000
#define PLT_FIRST_ENTRY_WORD3   (bfd_vma) 0xd207f030
#define PLT_FIRST_ENTRY_WORD4   (bfd_vma) 0x1008e310
#define PLT_FIRST_ENTRY_WORD5   (bfd_vma) 0x10100004
#define PLT_FIRST_ENTRY_WORD6   (bfd_vma) 0x07f10700
#define PLT_FIRST_ENTRY_WORD7   (bfd_vma) 0x07000700
#define GOT_UNKNOWN   0
#define GOT_NORMAL   1
#define GOT_TLS_GD   2
#define GOT_TLS_IE   3
#define GOT_TLS_IE_NLT   3
#define elf_s390_hash_entry(ent)   ((struct elf_s390_link_hash_entry *)(ent))
#define elf_s390_tdata(abfd)   ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
#define elf_s390_local_got_tls_type(abfd)   (elf_s390_tdata (abfd)->local_got_tls_type)
#define elf_s390_hash_table(p)   ((struct elf_s390_link_hash_table *) ((p)->hash))
#define add_dynamic_entry(TAG, VAL)   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
#define TARGET_BIG_SYM   bfd_elf64_s390_vec
#define TARGET_BIG_NAME   "elf64-s390"
#define ELF_ARCH   bfd_arch_s390
#define ELF_MACHINE_CODE   EM_S390
#define ELF_MACHINE_ALT1   EM_S390_OLD
#define ELF_MAXPAGESIZE   0x1000
#define elf_backend_size_info   s390_elf64_size_info
#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   24
#define elf_backend_rela_normal   1
#define elf_info_to_howto   elf_s390_info_to_howto
#define bfd_elf64_bfd_is_local_label_name   elf_s390_is_local_label_name
#define bfd_elf64_bfd_link_hash_table_create   elf_s390_link_hash_table_create
#define bfd_elf64_bfd_reloc_type_lookup   elf_s390_reloc_type_lookup
#define bfd_elf64_bfd_reloc_name_lookup   elf_s390_reloc_name_lookup
#define elf_backend_adjust_dynamic_symbol   elf_s390_adjust_dynamic_symbol
#define elf_backend_check_relocs   elf_s390_check_relocs
#define elf_backend_copy_indirect_symbol   elf_s390_copy_indirect_symbol
#define elf_backend_create_dynamic_sections   elf_s390_create_dynamic_sections
#define elf_backend_finish_dynamic_sections   elf_s390_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol   elf_s390_finish_dynamic_symbol
#define elf_backend_gc_mark_hook   elf_s390_gc_mark_hook
#define elf_backend_gc_sweep_hook   elf_s390_gc_sweep_hook
#define elf_backend_reloc_type_class   elf_s390_reloc_type_class
#define elf_backend_relocate_section   elf_s390_relocate_section
#define elf_backend_size_dynamic_sections   elf_s390_size_dynamic_sections
#define elf_backend_init_index_section   _bfd_elf_init_1_index_section
#define elf_backend_reloc_type_class   elf_s390_reloc_type_class
#define elf_backend_plt_sym_val   elf_s390_plt_sym_val
#define bfd_elf64_mkobject   elf_s390_mkobject
#define elf_backend_object_p   elf_s390_object_p

Functions

static reloc_howto_type
*elf_s390_reloc_type_lookup 
PARAMS ((bfd *, bfd_reloc_code_real_type))
static void elf_s390_info_to_howto PARAMS ((bfd *, arelent *, Elf_Internal_Rela *))
static bfd_boolean
elf_s390_is_local_label_name 
PARAMS ((bfd *, const char *))
static struct bfd_hash_entry
*link_hash_newfunc 
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *))
static struct
bfd_link_hash_table
*elf_s390_link_hash_table_create 
PARAMS ((bfd *))
static bfd_boolean
create_got_section 
PARAMS ((bfd *, struct bfd_link_info *))
static void
elf_s390_copy_indirect_symbol 
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, struct elf_link_hash_entry *))
static bfd_boolean
elf_s390_check_relocs 
PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *))
static void elf_s390_adjust_gotplt PARAMS ((struct elf_s390_link_hash_entry *))
static bfd_boolean
elf_s390_adjust_dynamic_symbol 
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *))
static bfd_boolean
allocate_dynrelocs 
PARAMS ((struct elf_link_hash_entry *, PTR))
static bfd_boolean
elf_s390_relocate_section 
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **))
static bfd_boolean
elf_s390_finish_dynamic_symbol 
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, Elf_Internal_Sym *))
static enum elf_reloc_type_class PARAMS ((const Elf_Internal_Rela *))
static int elf_s390_tls_transition PARAMS ((struct bfd_link_info *, int, int))
static bfd_reloc_status_type
s390_tls_reloc 
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **))
static bfd_vma dtpoff_base PARAMS ((struct bfd_link_info *))
static bfd_vma tpoff PARAMS ((struct bfd_link_info *, bfd_vma))
static void invalid_tls_insn PARAMS ((bfd *, asection *, Elf_Internal_Rela *))
static reloc_howto_type * elf_s390_reloc_type_lookup (abfd, bfd_reloc_code_real_type code)
static reloc_howto_type * elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
static void elf_s390_info_to_howto (abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
static bfd_reloc_status_type s390_tls_reloc (abfd, arelent *reloc_entry, symbol, data, asection *input_section, bfd *output_bfd, error_message)
static bfd_reloc_status_type s390_elf_ldisp_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, PTR data, asection *input_section, bfd *output_bfd, error_message)
static bfd_boolean elf_s390_is_local_label_name (bfd *abfd, const char *name)
static bfd_boolean elf_s390_mkobject (bfd *abfd)
static bfd_boolean elf_s390_object_p (bfd *abfd)
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_tableelf_s390_link_hash_table_create (bfd *abfd)
static bfd_boolean create_got_section (bfd *dynobj, struct bfd_link_info *info)
static bfd_boolean elf_s390_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
static void elf_s390_copy_indirect_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *dir, struct elf_link_hash_entry *ind)
static int elf_s390_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
static bfd_boolean elf_s390_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, const Elf_Internal_Rela *relocs)
static asectionelf_s390_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 elf_s390_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, const Elf_Internal_Rela *relocs)
static void elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
static bfd_boolean elf_s390_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, PTR inf)
static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
static bfd_boolean elf_s390_size_dynamic_sections (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 void invalid_tls_insn (bfd *input_bfd, asection *input_section, Elf_Internal_Rela *rel)
static bfd_boolean elf_s390_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 elf_s390_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 elf_s390_reloc_type_class (Elf_Internal_Rela *rela) const
static bfd_boolean elf_s390_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
static bfd_vma elf_s390_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel ATTRIBUTE_UNUSED)

Variables

static reloc_howto_type elf_howto_table []
static reloc_howto_type elf64_s390_vtinherit_howto
static reloc_howto_type elf64_s390_vtentry_howto

Class Documentation

struct elf_s390_dyn_relocs

Definition at line 640 of file elf32-s390.c.

Collaboration diagram for elf_s390_dyn_relocs:
Class Members
bfd_size_type count
struct elf_s390_dyn_relocs * next
bfd_size_type pc_count
asection * sec
struct elf_s390_link_hash_entry

Definition at line 656 of file elf32-s390.c.

Collaboration diagram for elf_s390_link_hash_entry:
Class Members
struct elf_s390_dyn_relocs * dyn_relocs
bfd_signed_vma gotplt_refcount
unsigned char tls_type
struct elf_s390_obj_tdata

Definition at line 677 of file elf32-s390.c.

Class Members
char * local_got_tls_type
struct elf_s390_link_hash_table

Definition at line 714 of file elf32-s390.c.

Collaboration diagram for elf_s390_link_hash_table:
Class Members
asection * sdynbss
asection * sgot
asection * sgotplt
asection * splt
asection * srelbss
asection * srelgot
asection * srelplt
union elf_s390_link_hash_table tls_ldm_got
union elf_s390_link_hash_table tls_ldm_got
union elf_s390_link_hash_table.tls_ldm_got

Definition at line 682 of file elf64-s390.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 3469 of file elf64-s390.c.

Definition at line 3470 of file elf64-s390.c.

Definition at line 3472 of file elf64-s390.c.

Definition at line 3471 of file elf64-s390.c.

Definition at line 3489 of file elf64-s390.c.

#define ELF_ARCH   bfd_arch_s390

Definition at line 3452 of file elf64-s390.c.

Definition at line 3474 of file elf64-s390.c.

Definition at line 3459 of file elf64-s390.c.

#define elf_backend_can_refcount   1

Definition at line 3460 of file elf64-s390.c.

Definition at line 3475 of file elf64-s390.c.

Definition at line 3476 of file elf64-s390.c.

Definition at line 3477 of file elf64-s390.c.

Definition at line 3478 of file elf64-s390.c.

Definition at line 3479 of file elf64-s390.c.

Definition at line 3480 of file elf64-s390.c.

Definition at line 3481 of file elf64-s390.c.

#define elf_backend_got_header_size   24

Definition at line 3464 of file elf64-s390.c.

Definition at line 3485 of file elf64-s390.c.

Definition at line 3490 of file elf64-s390.c.

#define elf_backend_plt_readonly   1

Definition at line 3462 of file elf64-s390.c.

Definition at line 3487 of file elf64-s390.c.

#define elf_backend_rela_normal   1

Definition at line 3465 of file elf64-s390.c.

Definition at line 3486 of file elf64-s390.c.

Definition at line 3486 of file elf64-s390.c.

Definition at line 3483 of file elf64-s390.c.

Definition at line 3484 of file elf64-s390.c.

#define elf_backend_size_info   s390_elf64_size_info

Definition at line 3457 of file elf64-s390.c.

#define elf_backend_want_got_plt   1

Definition at line 3461 of file elf64-s390.c.

#define elf_backend_want_plt_sym   0

Definition at line 3463 of file elf64-s390.c.

#define ELF_DYNAMIC_INTERPRETER   "/usr/lib/ld.so.1"

Definition at line 496 of file elf64-s390.c.

Definition at line 3467 of file elf64-s390.c.

Definition at line 3454 of file elf64-s390.c.

#define ELF_MACHINE_CODE   EM_S390

Definition at line 3453 of file elf64-s390.c.

#define ELF_MAXPAGESIZE   0x1000

Definition at line 3455 of file elf64-s390.c.

#define elf_s390_hash_entry (   ent)    ((struct elf_s390_link_hash_entry *)(ent))

Definition at line 629 of file elf64-s390.c.

#define elf_s390_hash_table (   p)    ((struct elf_s390_link_hash_table *) ((p)->hash))

Definition at line 693 of file elf64-s390.c.

#define elf_s390_local_got_tls_type (   abfd)    (elf_s390_tdata (abfd)->local_got_tls_type)

Definition at line 643 of file elf64-s390.c.

#define elf_s390_tdata (   abfd)    ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)

Definition at line 640 of file elf64-s390.c.

#define ELIMINATE_COPY_RELOCS   1

Definition at line 502 of file elf64-s390.c.

#define GOT_ENTRY_SIZE   8

Definition at line 509 of file elf64-s390.c.

#define GOT_NORMAL   1

Definition at line 622 of file elf64-s390.c.

#define GOT_TLS_GD   2

Definition at line 623 of file elf64-s390.c.

#define GOT_TLS_IE   3

Definition at line 624 of file elf64-s390.c.

#define GOT_TLS_IE_NLT   3

Definition at line 625 of file elf64-s390.c.

#define GOT_UNKNOWN   0

Definition at line 621 of file elf64-s390.c.

#define MINUS_ONE   (((bfd_vma)0) - 1)

Definition at line 89 of file elf64-s390.c.

#define PLT_ENTRY_SIZE   32

Definition at line 507 of file elf64-s390.c.

#define PLT_ENTRY_WORD0   (bfd_vma) 0xc0100000

Definition at line 556 of file elf64-s390.c.

#define PLT_ENTRY_WORD1   (bfd_vma) 0x0000e310

Definition at line 557 of file elf64-s390.c.

#define PLT_ENTRY_WORD2   (bfd_vma) 0x10000004

Definition at line 558 of file elf64-s390.c.

#define PLT_ENTRY_WORD3   (bfd_vma) 0x07f10d10

Definition at line 559 of file elf64-s390.c.

#define PLT_ENTRY_WORD4   (bfd_vma) 0xe310100c

Definition at line 560 of file elf64-s390.c.

#define PLT_ENTRY_WORD5   (bfd_vma) 0x0014c0f4

Definition at line 561 of file elf64-s390.c.

#define PLT_ENTRY_WORD6   (bfd_vma) 0x00000000

Definition at line 562 of file elf64-s390.c.

#define PLT_ENTRY_WORD7   (bfd_vma) 0x00000000

Definition at line 563 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_SIZE   32

Definition at line 505 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD0   (bfd_vma) 0xe310f038

Definition at line 580 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD1   (bfd_vma) 0x0024c010

Definition at line 581 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD2   (bfd_vma) 0x00000000

Definition at line 582 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD3   (bfd_vma) 0xd207f030

Definition at line 583 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD4   (bfd_vma) 0x1008e310

Definition at line 584 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD5   (bfd_vma) 0x10100004

Definition at line 585 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD6   (bfd_vma) 0x07f10700

Definition at line 586 of file elf64-s390.c.

#define PLT_FIRST_ENTRY_WORD7   (bfd_vma) 0x07000700

Definition at line 587 of file elf64-s390.c.

#define TARGET_BIG_NAME   "elf64-s390"

Definition at line 3451 of file elf64-s390.c.

Definition at line 3450 of file elf64-s390.c.


Function Documentation

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

Definition at line 1710 of file elf64-s390.c.

{
  struct bfd_link_info *info;
  struct elf_s390_link_hash_table *htab;
  struct elf_s390_link_hash_entry *eh;
  struct elf_s390_dyn_relocs *p;

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

  if (h->root.type == bfd_link_hash_warning)
    /* When warning symbols are created, they **replace** the "real"
       entry in the hash table, thus we never get to see the real
       symbol in a hash traversal.  So look at it now.  */
    h = (struct elf_link_hash_entry *) h->root.u.i.link;

  info = (struct bfd_link_info *) inf;
  htab = elf_s390_hash_table (info);

  if (htab->elf.dynamic_sections_created
      && h->plt.refcount > 0
      && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
         || h->root.type != bfd_link_hash_undefweak))
    {
      /* 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_FIRST_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);
       }
      else
       {
         h->plt.offset = (bfd_vma) -1;
         h->needs_plt = 0;
         elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
       }
    }
  else
    {
      h->plt.offset = (bfd_vma) -1;
      h->needs_plt = 0;
      elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
    }

  /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
     the binary, we can optimize a bit. IE64 and GOTIE64 get converted
     to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
     we can save the dynamic TLS relocation.  */
  if (h->got.refcount > 0
      && !info->shared
      && h->dynindx == -1
      && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
    {
      if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
       /* For the GOTIE access without a literal pool entry the offset has
          to be stored somewhere. The immediate value in the instruction
          is not bit enough so the value is stored in the got.  */
       {
         h->got.offset = htab->sgot->size;
         htab->sgot->size += GOT_ENTRY_SIZE;
       }
      else
       h->got.offset = (bfd_vma) -1;
    }
  else if (h->got.refcount > 0)
    {
      asection *s;
      bfd_boolean dyn;
      int tls_type = elf_s390_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;
       }

      s = htab->sgot;
      h->got.offset = s->size;
      s->size += GOT_ENTRY_SIZE;
      /* R_390_TLS_GD64 needs 2 consecutive GOT slots.  */
      if (tls_type == GOT_TLS_GD)
       s->size += GOT_ENTRY_SIZE;
      dyn = htab->elf.dynamic_sections_created;
      /* R_390_TLS_IE64 needs one dynamic relocation,
        R_390_TLS_GD64 needs one if local symbol and two if global.  */
      if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
         || tls_type >= GOT_TLS_IE)
       htab->srelgot->size += sizeof (Elf64_External_Rela);
      else if (tls_type == GOT_TLS_GD)
       htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
      else if ((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);
    }
  else
    h->got.offset = (bfd_vma) -1;

  eh = (struct elf_s390_link_hash_entry *) h;
  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)
    {
      if (SYMBOL_REFERENCES_LOCAL (info, h))
       {
         struct elf_s390_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 766 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *htab;

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

  htab = elf_s390_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 2195 of file elf64-s390.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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Definition at line 1554 of file elf64-s390.c.

{
  struct elf_s390_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
     (although we could actually do it here).  */
  if (h->type == STT_FUNC
      || h->needs_plt)
    {
      if (h->plt.refcount <= 0
         || (! info->shared
             && !h->def_dynamic
             && !h->ref_dynamic
             && h->root.type != bfd_link_hash_undefweak
             && h->root.type != bfd_link_hash_undefined))
       {
         /* 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;
         elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
       }

      return TRUE;
    }
  else
    /* It's possible that we incorrectly decided a .plt reloc was
       needed for an R_390_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 elf_s390_link_hash_entry * eh;
      struct elf_s390_dyn_relocs *p;

      eh = (struct elf_s390_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 = elf_s390_hash_table (info);

  /* We must generate a R_390_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.  */
  power_of_two = bfd_log2 (h->size);
  if (power_of_two > 3)
    power_of_two = 3;

  /* 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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Definition at line 1532 of file elf64-s390.c.

{
  if (h->elf.root.type == bfd_link_hash_warning)
    h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;

  if (h->gotplt_refcount <= 0)
    return;

  /* We simply add the number of gotplt references to the number
   * of got references for this symbol.  */
  h->elf.got.refcount += h->gotplt_refcount;
  h->gotplt_refcount = -1;
}

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static bfd_boolean elf_s390_check_relocs ( bfd abfd,
struct bfd_link_info info,
asection sec,
const Elf_Internal_Rela relocs 
) [static]

Definition at line 922 of file elf64-s390.c.

{
  struct elf_s390_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;
  bfd_signed_vma *local_got_refcounts;
  int tls_type, old_tls_type;

  if (info->relocatable)
    return TRUE;

  htab = elf_s390_hash_table (info);
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (abfd);
  local_got_refcounts = elf_local_got_refcounts (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);

      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;
       }

      /* Create got section and local_got_refcounts array if they
        are needed.  */
      r_type = elf_s390_tls_transition (info,
                                   ELF64_R_TYPE (rel->r_info),
                                   h == NULL);
      switch (r_type)
       {
       case R_390_GOT12:
       case R_390_GOT16:
       case R_390_GOT20:
       case R_390_GOT32:
       case R_390_GOT64:
       case R_390_GOTENT:
       case R_390_GOTPLT12:
       case R_390_GOTPLT16:
       case R_390_GOTPLT20:
       case R_390_GOTPLT32:
       case R_390_GOTPLT64:
       case R_390_GOTPLTENT:
       case R_390_TLS_GD64:
       case R_390_TLS_GOTIE12:
       case R_390_TLS_GOTIE20:
       case R_390_TLS_GOTIE64:
       case R_390_TLS_IEENT:
       case R_390_TLS_IE64:
       case R_390_TLS_LDM64:
         if (h == NULL
             && local_got_refcounts == NULL)
           {
             bfd_size_type size;

             size = symtab_hdr->sh_info;
             size *= (sizeof (bfd_signed_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;
             elf_s390_local_got_tls_type (abfd)
              = (char *) (local_got_refcounts + symtab_hdr->sh_info);
           }
         /* Fall through.  */
       case R_390_GOTOFF16:
       case R_390_GOTOFF32:
       case R_390_GOTOFF64:
       case R_390_GOTPC:
       case R_390_GOTPCDBL:
         if (htab->sgot == NULL)
           {
             if (htab->elf.dynobj == NULL)
              htab->elf.dynobj = abfd;
             if (!create_got_section (htab->elf.dynobj, info))
              return FALSE;
           }
       }

      switch (r_type)
       {
       case R_390_GOTOFF16:
       case R_390_GOTOFF32:
       case R_390_GOTOFF64:
       case R_390_GOTPC:
       case R_390_GOTPCDBL:
         /* Got is created, nothing to be done.  */
         break;

       case R_390_PLT16DBL:
       case R_390_PLT32:
       case R_390_PLT32DBL:
       case R_390_PLT64:
       case R_390_PLTOFF16:
       case R_390_PLTOFF32:
       case R_390_PLTOFF64:
         /* 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)
           {
             h->needs_plt = 1;
             h->plt.refcount += 1;
           }
         break;

       case R_390_GOTPLT12:
       case R_390_GOTPLT16:
       case R_390_GOTPLT20:
       case R_390_GOTPLT32:
       case R_390_GOTPLT64:
       case R_390_GOTPLTENT:
         /* This symbol requires either a procedure linkage table entry
            or an entry in the local got. We actually build the entry
            in adjust_dynamic_symbol because whether this is really a
            global reference can change and with it the fact if we have
            to create a plt entry or a local got entry. To be able to
            make a once global symbol a local one we have to keep track
            of the number of gotplt references that exist for this
            symbol.  */
         if (h != NULL)
           {
             ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
             h->needs_plt = 1;
             h->plt.refcount += 1;
           }
         else
           local_got_refcounts[r_symndx] += 1;
         break;

       case R_390_TLS_LDM64:
         htab->tls_ldm_got.refcount += 1;
         break;

       case R_390_TLS_IE64:
       case R_390_TLS_GOTIE12:
       case R_390_TLS_GOTIE20:
       case R_390_TLS_GOTIE64:
       case R_390_TLS_IEENT:
         if (info->shared)
           info->flags |= DF_STATIC_TLS;
         /* Fall through */

       case R_390_GOT12:
       case R_390_GOT16:
       case R_390_GOT20:
       case R_390_GOT32:
       case R_390_GOT64:
       case R_390_GOTENT:
       case R_390_TLS_GD64:
         /* This symbol requires a global offset table entry.  */
         switch (r_type)
           {
           default:
           case R_390_GOT12:
           case R_390_GOT16:
           case R_390_GOT20:
           case R_390_GOT32:
           case R_390_GOTENT:
             tls_type = GOT_NORMAL;
             break;
           case R_390_TLS_GD64:
             tls_type = GOT_TLS_GD;
             break;
           case R_390_TLS_IE64:
           case R_390_TLS_GOTIE64:
             tls_type = GOT_TLS_IE;
             break;
           case R_390_TLS_GOTIE12:
           case R_390_TLS_GOTIE20:
           case R_390_TLS_IEENT:
             tls_type = GOT_TLS_IE_NLT;
             break;
           }

         if (h != NULL)
           {
             h->got.refcount += 1;
             old_tls_type = elf_s390_hash_entry(h)->tls_type;
           }
         else
           {
             local_got_refcounts[r_symndx] += 1;
             old_tls_type = elf_s390_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)
           {
             if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
              {
                (*_bfd_error_handler)
                  (_("%B: `%s' accessed both as normal and thread local symbol"),
                   abfd, h->root.root.string);
                return FALSE;
              }
             if (old_tls_type > tls_type)
              tls_type = old_tls_type;
           }

         if (old_tls_type != tls_type)
           {
             if (h != NULL)
              elf_s390_hash_entry (h)->tls_type = tls_type;
             else
              elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
           }

         if (r_type != R_390_TLS_IE64)
           break;
         /* Fall through */

       case R_390_TLS_LE64:
         if (!info->shared)
           break;
         info->flags |= DF_STATIC_TLS;
         /* Fall through */

       case R_390_8:
       case R_390_16:
       case R_390_32:
       case R_390_64:
       case R_390_PC16:
       case R_390_PC16DBL:
       case R_390_PC32:
       case R_390_PC32DBL:
       case R_390_PC64:
         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 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
              && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
                  && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
                  && ELF64_R_TYPE (rel->r_info) != R_390_PC32
                  && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
                  && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
                 || (h != NULL
                     && (! info->symbolic
                        || 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 elf_s390_dyn_relocs *p;
             struct elf_s390_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 elf_s390_link_hash_entry *) h)->dyn_relocs;
              }
             else
              {
                /* Track dynamic relocs needed for local syms too.
                   We really need local syms available to do this
                   easily.  Oh well.  */

                asection *s;
                void *vpp;

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

                vpp = &elf_section_data (s)->local_dynrel;
                head = (struct elf_s390_dyn_relocs **) vpp;
              }

             p = *head;
             if (p == NULL || p->sec != sec)
              {
                bfd_size_type amt = sizeof *p;
                p = ((struct elf_s390_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 (ELF64_R_TYPE (rel->r_info) == R_390_PC16
                || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
                || ELF64_R_TYPE (rel->r_info) == R_390_PC32
                || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
                || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
              p->pc_count += 1;
           }
         break;

         /* This relocation describes the C++ object vtable hierarchy.
            Reconstruct it for later use during GC.  */
       case R_390_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_390_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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Definition at line 827 of file elf64-s390.c.

{
  struct elf_s390_link_hash_entry *edir, *eind;

  edir = (struct elf_s390_link_hash_entry *) dir;
  eind = (struct elf_s390_link_hash_entry *) ind;

  if (eind->dyn_relocs != NULL)
    {
      if (edir->dyn_relocs != NULL)
       {
         struct elf_s390_dyn_relocs **pp;
         struct elf_s390_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 elf_s390_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;
    }
  else
    _bfd_elf_link_hash_copy_indirect (info, dir, ind);
}

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static bfd_boolean elf_s390_create_dynamic_sections ( bfd dynobj,
struct bfd_link_info info 
) [static]

Definition at line 798 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *htab;

  htab = elf_s390_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 elf_s390_finish_dynamic_sections ( bfd output_bfd,
struct bfd_link_info info 
) [static]

Definition at line 3293 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *htab;
  bfd *dynobj;
  asection *sdyn;

  htab = elf_s390_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:
             dyn.d_un.d_ptr = htab->sgot->output_section->vma;
             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.  */
             s = htab->srelplt->output_section;
             dyn.d_un.d_val -= s->size;
             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 blueprint for plt 0 entry */
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0,
                    htab->splt->contents );
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
                    htab->splt->contents +4 );
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
                    htab->splt->contents +12 );
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
                    htab->splt->contents +16 );
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
                    htab->splt->contents +20 );
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6,
                    htab->splt->contents + 24);
         bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7,
                    htab->splt->contents + 28 );
         /* Fixup relative address to start of GOT */
         bfd_put_32 (output_bfd,
                    (htab->sgotplt->output_section->vma +
                     htab->sgotplt->output_offset
                     - htab->splt->output_section->vma - 6)/2,
                    htab->splt->contents + 8);
       }
      elf_section_data (htab->splt->output_section)
       ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
    }

  if (htab->sgotplt)
    {
      /* Fill in the first three entries in the global offset table.  */
      if (htab->sgotplt->size > 0)
       {
         bfd_put_64 (output_bfd,
                    (sdyn == NULL ? (bfd_vma) 0
                     : sdyn->output_section->vma + sdyn->output_offset),
                    htab->sgotplt->contents);
         /* One entry for shared object struct ptr.  */
         bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
         /* One entry for _dl_runtime_resolve.  */
         bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12);
       }

      elf_section_data (htab->sgot->output_section)
       ->this_hdr.sh_entsize = 8;
    }
  return TRUE;
}

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static bfd_boolean elf_s390_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 3097 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *htab;

  htab = elf_s390_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 ();

      /* Calc. index no.
        Current offset - size first entry / entry size.  */
      plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;

      /* Offset in GOT is PLT index plus GOT headers(3) times 8,
        addr & GOT addr.  */
      got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;

      /* Fill in the blueprint of a PLT.  */
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
                htab->splt->contents + h->plt.offset);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
                htab->splt->contents + h->plt.offset + 4);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
                htab->splt->contents + h->plt.offset + 8);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
                htab->splt->contents + h->plt.offset + 12);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
                htab->splt->contents + h->plt.offset + 16);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5,
                htab->splt->contents + h->plt.offset + 20);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6,
                htab->splt->contents + h->plt.offset + 24);
      bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7,
                htab->splt->contents + h->plt.offset + 28);
      /* Fixup the relative address to the GOT entry */
      bfd_put_32 (output_bfd,
                (htab->sgotplt->output_section->vma +
                 htab->sgotplt->output_offset + got_offset
                 - (htab->splt->output_section->vma + h->plt.offset))/2,
                htab->splt->contents + h->plt.offset + 2);
      /* Fixup the relative branch to PLT 0 */
      bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
                             (PLT_ENTRY_SIZE * plt_index) + 22)/2,
                htab->splt->contents + h->plt.offset + 24);
      /* Fixup offset into symbol table */
      bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
                htab->splt->contents + h->plt.offset + 28);

      /* Fill in the entry in the global offset table.
        Points to instruction after GOT offset.  */
      bfd_put_64 (output_bfd,
                (htab->splt->output_section->vma
                 + htab->splt->output_offset
                 + h->plt.offset
                 + 14),
                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_390_JMP_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 alone.  This is a clue
            for the dynamic linker, to make function pointer
            comparisons work between an application and shared
            library.  */
         sym->st_shndx = SHN_UNDEF;
       }
    }

  if (h->got.offset != (bfd_vma) -1
      && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
      && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
      && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
    {
      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
         && (info->symbolic
             || h->dynindx == -1
             || h->forced_local)
         && h->def_regular)
       {
         BFD_ASSERT((h->got.offset & 1) != 0);
         rela.r_info = ELF64_R_INFO (0, R_390_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_390_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 symbols 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_390_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 some specially defined symbols as absolute.  */
  if (strcmp (h->root.root.string, "_DYNAMIC") == 0
      || h == htab->elf.hgot
      || h == htab->elf.hplt)
    sym->st_shndx = SHN_ABS;

  return TRUE;
}

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static asection* elf_s390_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 1363 of file elf64-s390.c.

{
  if (h != NULL)
    switch (ELF64_R_TYPE (rel->r_info))
      {
      case R_390_GNU_VTINHERIT:
      case R_390_GNU_VTENTRY:
       return NULL;
      }

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

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static bfd_boolean elf_s390_gc_sweep_hook ( bfd abfd,
struct bfd_link_info info,
asection sec,
const Elf_Internal_Rela relocs 
) [static]

Definition at line 1383 of file elf64-s390.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 elf_s390_link_hash_entry *eh;
         struct elf_s390_dyn_relocs **pp;
         struct elf_s390_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 elf_s390_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 = elf_s390_tls_transition (info, r_type, h != NULL);
      switch (r_type)
       {
       case R_390_TLS_LDM64:
         if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
           elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
         break;

       case R_390_TLS_GD64:
       case R_390_TLS_IE64:
       case R_390_TLS_GOTIE12:
       case R_390_TLS_GOTIE20:
       case R_390_TLS_GOTIE64:
       case R_390_TLS_IEENT:
       case R_390_GOT12:
       case R_390_GOT16:
       case R_390_GOT20:
       case R_390_GOT32:
       case R_390_GOT64:
       case R_390_GOTOFF16:
       case R_390_GOTOFF32:
       case R_390_GOTOFF64:
       case R_390_GOTPC:
       case R_390_GOTPCDBL:
       case R_390_GOTENT:
         if (h != NULL)
           {
             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_390_8:
       case R_390_12:
       case R_390_16:
       case R_390_20:
       case R_390_32:
       case R_390_64:
       case R_390_PC16:
       case R_390_PC16DBL:
       case R_390_PC32:
       case R_390_PC32DBL:
       case R_390_PC64:
         if (info->shared)
           break;
         /* Fall through */

       case R_390_PLT16DBL:
       case R_390_PLT32:
       case R_390_PLT32DBL:
       case R_390_PLT64:
       case R_390_PLTOFF16:
       case R_390_PLTOFF32:
       case R_390_PLTOFF64:
         if (h != NULL)
           {
             if (h->plt.refcount > 0)
              h->plt.refcount -= 1;
           }
         break;

       case R_390_GOTPLT12:
       case R_390_GOTPLT16:
       case R_390_GOTPLT20:
       case R_390_GOTPLT32:
       case R_390_GOTPLT64:
       case R_390_GOTPLTENT:
         if (h != NULL)
           {
             if (h->plt.refcount > 0)
              {
                ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
                h->plt.refcount -= 1;
              }
           }
         else if (local_got_refcounts != NULL)
           {
             if (local_got_refcounts[r_symndx] > 0)
              local_got_refcounts[r_symndx] -= 1;
           }
         break;

       default:
         break;
       }
    }

  return TRUE;
}

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static void elf_s390_info_to_howto ( abfd  ,
arelent cache_ptr,
Elf_Internal_Rela dst 
) [static]

Definition at line 384 of file elf64-s390.c.

{
  unsigned int r_type = ELF64_R_TYPE(dst->r_info);
  switch (r_type)
    {
    case R_390_GNU_VTINHERIT:
      cache_ptr->howto = &elf64_s390_vtinherit_howto;
      break;

    case R_390_GNU_VTENTRY:
      cache_ptr->howto = &elf64_s390_vtentry_howto;
      break;

    default:
      if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
       {
         (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
                             abfd, (int) r_type);
         r_type = R_390_NONE;
       }
      cache_ptr->howto = &elf_howto_table[r_type];
    }
}
static bfd_boolean elf_s390_is_local_label_name ( bfd abfd,
const char *  name 
) [static]

Definition at line 481 of file elf64-s390.c.

{
  if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
    return TRUE;

  return _bfd_elf_is_local_label_name (abfd, name);
}

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static struct bfd_link_hash_table* elf_s390_link_hash_table_create ( bfd abfd) [static, read]

Definition at line 732 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *ret;
  bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);

  ret = (struct elf_s390_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 elf_s390_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->tls_ldm_got.refcount = 0;
  ret->sym_sec.abfd = NULL;

  return &ret->elf.root;
}

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static bfd_boolean elf_s390_mkobject ( bfd abfd) [static]

Definition at line 647 of file elf64-s390.c.

{
  if (abfd->tdata.any == NULL)
    {
      bfd_size_type amt = sizeof (struct elf_s390_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_boolean elf_s390_object_p ( bfd abfd) [static]

Definition at line 660 of file elf64-s390.c.

{
  /* Set the right machine number for an s390 elf32 file.  */
  return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
}

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static bfd_vma elf_s390_plt_sym_val ( bfd_vma  i,
const asection plt,
const arelent *rel  ATTRIBUTE_UNUSED 
) [static]

Definition at line 3409 of file elf64-s390.c.

{
  return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
}
static reloc_howto_type* elf_s390_reloc_name_lookup ( bfd *abfd  ATTRIBUTE_UNUSED,
const char *  r_name 
) [static]

Definition at line 360 of file elf64-s390.c.

{
  unsigned int i;

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

    if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
      return &elf64_s390_vtinherit_howto;
    if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
      return &elf64_s390_vtentry_howto;

  return NULL;
}

Here is the call graph for this function:

static enum elf_reloc_type_class elf_s390_reloc_type_class ( Elf_Internal_Rela rela) const [static]

Definition at line 3274 of file elf64-s390.c.

{
  switch ((int) ELF64_R_TYPE (rela->r_info))
    {
    case R_390_RELATIVE:
      return reloc_class_relative;
    case R_390_JMP_SLOT:
      return reloc_class_plt;
    case R_390_COPY:
      return reloc_class_copy;
    default:
      return reloc_class_normal;
    }
}
static reloc_howto_type* elf_s390_reloc_type_lookup ( abfd  ,
bfd_reloc_code_real_type  code 
) [static]

Definition at line 231 of file elf64-s390.c.

{
  switch (code)
    {
    case BFD_RELOC_NONE:
      return &elf_howto_table[(int) R_390_NONE];
    case BFD_RELOC_8:
      return &elf_howto_table[(int) R_390_8];
    case BFD_RELOC_390_12:
      return &elf_howto_table[(int) R_390_12];
    case BFD_RELOC_16:
      return &elf_howto_table[(int) R_390_16];
    case BFD_RELOC_32:
      return &elf_howto_table[(int) R_390_32];
    case BFD_RELOC_CTOR:
      return &elf_howto_table[(int) R_390_32];
    case BFD_RELOC_32_PCREL:
      return &elf_howto_table[(int) R_390_PC32];
    case BFD_RELOC_390_GOT12:
      return &elf_howto_table[(int) R_390_GOT12];
    case BFD_RELOC_32_GOT_PCREL:
      return &elf_howto_table[(int) R_390_GOT32];
    case BFD_RELOC_390_PLT32:
      return &elf_howto_table[(int) R_390_PLT32];
    case BFD_RELOC_390_COPY:
      return &elf_howto_table[(int) R_390_COPY];
    case BFD_RELOC_390_GLOB_DAT:
      return &elf_howto_table[(int) R_390_GLOB_DAT];
    case BFD_RELOC_390_JMP_SLOT:
      return &elf_howto_table[(int) R_390_JMP_SLOT];
    case BFD_RELOC_390_RELATIVE:
      return &elf_howto_table[(int) R_390_RELATIVE];
    case BFD_RELOC_32_GOTOFF:
      return &elf_howto_table[(int) R_390_GOTOFF32];
    case BFD_RELOC_390_GOTPC:
      return &elf_howto_table[(int) R_390_GOTPC];
    case BFD_RELOC_390_GOT16:
      return &elf_howto_table[(int) R_390_GOT16];
    case BFD_RELOC_16_PCREL:
      return &elf_howto_table[(int) R_390_PC16];
    case BFD_RELOC_390_PC16DBL:
      return &elf_howto_table[(int) R_390_PC16DBL];
    case BFD_RELOC_390_PLT16DBL:
      return &elf_howto_table[(int) R_390_PLT16DBL];
    case BFD_RELOC_390_PC32DBL:
      return &elf_howto_table[(int) R_390_PC32DBL];
    case BFD_RELOC_390_PLT32DBL:
      return &elf_howto_table[(int) R_390_PLT32DBL];
    case BFD_RELOC_390_GOTPCDBL:
      return &elf_howto_table[(int) R_390_GOTPCDBL];
    case BFD_RELOC_64:
      return &elf_howto_table[(int) R_390_64];
    case BFD_RELOC_64_PCREL:
      return &elf_howto_table[(int) R_390_PC64];
    case BFD_RELOC_390_GOT64:
      return &elf_howto_table[(int) R_390_GOT64];
    case BFD_RELOC_390_PLT64:
      return &elf_howto_table[(int) R_390_PLT64];
    case BFD_RELOC_390_GOTENT:
      return &elf_howto_table[(int) R_390_GOTENT];
    case BFD_RELOC_16_GOTOFF:
      return &elf_howto_table[(int) R_390_GOTOFF16];
    case BFD_RELOC_390_GOTOFF64:
      return &elf_howto_table[(int) R_390_GOTOFF64];
    case BFD_RELOC_390_GOTPLT12:
      return &elf_howto_table[(int) R_390_GOTPLT12];
    case BFD_RELOC_390_GOTPLT16:
      return &elf_howto_table[(int) R_390_GOTPLT16];
    case BFD_RELOC_390_GOTPLT32:
      return &elf_howto_table[(int) R_390_GOTPLT32];
    case BFD_RELOC_390_GOTPLT64:
      return &elf_howto_table[(int) R_390_GOTPLT64];
    case BFD_RELOC_390_GOTPLTENT:
      return &elf_howto_table[(int) R_390_GOTPLTENT];
    case BFD_RELOC_390_PLTOFF16:
      return &elf_howto_table[(int) R_390_PLTOFF16];
    case BFD_RELOC_390_PLTOFF32:
      return &elf_howto_table[(int) R_390_PLTOFF32];
    case BFD_RELOC_390_PLTOFF64:
      return &elf_howto_table[(int) R_390_PLTOFF64];
    case BFD_RELOC_390_TLS_LOAD:
      return &elf_howto_table[(int) R_390_TLS_LOAD];
    case BFD_RELOC_390_TLS_GDCALL:
      return &elf_howto_table[(int) R_390_TLS_GDCALL];
    case BFD_RELOC_390_TLS_LDCALL:
      return &elf_howto_table[(int) R_390_TLS_LDCALL];
    case BFD_RELOC_390_TLS_GD64:
      return &elf_howto_table[(int) R_390_TLS_GD64];
    case BFD_RELOC_390_TLS_GOTIE12:
      return &elf_howto_table[(int) R_390_TLS_GOTIE12];
    case BFD_RELOC_390_TLS_GOTIE64:
      return &elf_howto_table[(int) R_390_TLS_GOTIE64];
    case BFD_RELOC_390_TLS_LDM64:
      return &elf_howto_table[(int) R_390_TLS_LDM64];
    case BFD_RELOC_390_TLS_IE64:
      return &elf_howto_table[(int) R_390_TLS_IE64];
    case BFD_RELOC_390_TLS_IEENT:
      return &elf_howto_table[(int) R_390_TLS_IEENT];
    case BFD_RELOC_390_TLS_LE64:
      return &elf_howto_table[(int) R_390_TLS_LE64];
    case BFD_RELOC_390_TLS_LDO64:
      return &elf_howto_table[(int) R_390_TLS_LDO64];
    case BFD_RELOC_390_TLS_DTPMOD:
      return &elf_howto_table[(int) R_390_TLS_DTPMOD];
    case BFD_RELOC_390_TLS_DTPOFF:
      return &elf_howto_table[(int) R_390_TLS_DTPOFF];
    case BFD_RELOC_390_TLS_TPOFF:
      return &elf_howto_table[(int) R_390_TLS_TPOFF];
    case BFD_RELOC_390_20:
      return &elf_howto_table[(int) R_390_20];
    case BFD_RELOC_390_GOT20:
      return &elf_howto_table[(int) R_390_GOT20];
    case BFD_RELOC_390_GOTPLT20:
      return &elf_howto_table[(int) R_390_GOTPLT20];
    case BFD_RELOC_390_TLS_GOTIE20:
      return &elf_howto_table[(int) R_390_TLS_GOTIE20];
    case BFD_RELOC_VTABLE_INHERIT:
      return &elf64_s390_vtinherit_howto;
    case BFD_RELOC_VTABLE_ENTRY:
      return &elf64_s390_vtentry_howto;
    default:
      break;
    }
  return 0;
}
static bfd_boolean elf_s390_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 2244 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *htab;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  bfd_vma *local_got_offsets;
  Elf_Internal_Rela *rel;
  Elf_Internal_Rela *relend;

  htab = elf_s390_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);

  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;
      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_390_GNU_VTINHERIT
         || r_type == (int) R_390_GNU_VTENTRY)
       continue;
      if (r_type >= (int) R_390_max)
       {
         bfd_set_error (bfd_error_bad_value);
         return FALSE;
       }

      howto = 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 ATTRIBUTE_UNUSED;

         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;

      switch (r_type)
       {
       case R_390_GOTPLT12:
       case R_390_GOTPLT16:
       case R_390_GOTPLT20:
       case R_390_GOTPLT32:
       case R_390_GOTPLT64:
       case R_390_GOTPLTENT:
         /* There are three cases for a GOTPLT relocation. 1) The
            relocation is against the jump slot entry of a plt that
            will get emitted to the output file. 2) The relocation
            is against the jump slot of a plt entry that has been
            removed. elf_s390_adjust_gotplt has created a GOT entry
            as replacement. 3) The relocation is against a local symbol.
            Cases 2) and 3) are the same as the GOT relocation code
            so we just have to test for case 1 and fall through for
            the other two.  */
         if (h != NULL && h->plt.offset != (bfd_vma) -1)
           {
             bfd_vma plt_index;

             /* Calc. index no.
               Current offset - size first entry / entry size.  */
             plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
              PLT_ENTRY_SIZE;

             /* Offset in GOT is PLT index plus GOT headers(3) times 4,
               addr & GOT addr.  */
             relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
             unresolved_reloc = FALSE;

             if (r_type == R_390_GOTPLTENT)
              relocation += htab->sgot->output_section->vma;
             break;
           }
         /* Fall through.  */

       case R_390_GOT12:
       case R_390_GOT16:
       case R_390_GOT20:
       case R_390_GOT32:
       case R_390_GOT64:
       case R_390_GOTENT:
         /* Relocation is to the entry for this symbol in the global
            offset table.  */
         if (htab->sgot == NULL)
           abort ();

         if (h != NULL)
           {
             bfd_boolean dyn;

             off = h->got.offset;
             dyn = htab->elf.dynamic_sections_created;
             if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
                || (info->shared
                    && (info->symbolic
                       || h->dynindx == -1
                       || h->forced_local)
                    && h->def_regular)
                || (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 2, we use the
                   least significant bit to record whether we have
                   initialized it already.

                   When doing a dynamic link, we create a .rel.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,
                              htab->sgot->contents + off);
                    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,
                           htab->sgot->contents + off);

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

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

                    outrel.r_offset = (htab->sgot->output_section->vma
                                    + htab->sgot->output_offset
                                    + off);
                    outrel.r_info = ELF64_R_INFO (0, R_390_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 = htab->sgot->output_offset + off;

         /* For @GOTENT the relocation is against the offset between
            the instruction and the symbols entry in the GOT and not
            between the start of the GOT and the symbols entry. We
            add the vma of the GOT to get the correct value.  */
         if (   r_type == R_390_GOTENT
             || r_type == R_390_GOTPLTENT)
           relocation += htab->sgot->output_section->vma;

         break;

       case R_390_GOTOFF16:
       case R_390_GOTOFF32:
       case R_390_GOTOFF64:
         /* Relocation is relative to the start of the global offset
            table.  */

         /* Note that sgot->output_offset is not involved in this
            calculation.  We always want the start of .got.  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->sgot->output_section->vma;
         break;

       case R_390_GOTPC:
       case R_390_GOTPCDBL:
         /* Use global offset table as symbol value.  */
         relocation = htab->sgot->output_section->vma;
         unresolved_reloc = FALSE;
         break;

       case R_390_PLT16DBL:
       case R_390_PLT32:
       case R_390_PLT32DBL:
       case R_390_PLT64:
         /* 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_390_PLTOFF16:
       case R_390_PLTOFF32:
       case R_390_PLTOFF64:
         /* Relocation is to the entry for this symbol in the
            procedure linkage table relative to the start of the GOT.  */

         /* For local symbols or if we didn't make a PLT entry for
            this symbol resolve the symbol directly.  */
         if (   h == NULL
             || h->plt.offset == (bfd_vma) -1
             || htab->splt == NULL)
           {
             relocation -= htab->sgot->output_section->vma;
             break;
           }

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

       case R_390_8:
       case R_390_16:
       case R_390_32:
       case R_390_64:
       case R_390_PC16:
       case R_390_PC16DBL:
       case R_390_PC32:
       case R_390_PC32DBL:
       case R_390_PC64:
         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_390_PC16
                  && r_type != R_390_PC16DBL
                  && r_type != R_390_PC32
                  && r_type != R_390_PC32DBL
                  && r_type != R_390_PC64)
                 || (h != NULL
                     && !SYMBOL_REFERENCES_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_boolean skip, relocate;
             asection *sreloc;
             bfd_byte *loc;

             /* 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);
             else if (h != NULL
                     && h->dynindx != -1
                     && (r_type == R_390_PC16
                        || r_type == R_390_PC16DBL
                        || r_type == R_390_PC32
                        || r_type == R_390_PC32DBL
                        || r_type == R_390_PC64
                        || !info->shared
                        || !info->symbolic
                        || !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.  */
                outrel.r_addend = relocation + rel->r_addend;
                if (r_type == R_390_64)
                  {
                    relocate = TRUE;
                    outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
                  }
                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;

                       osec = sec->output_section;
                       sindx = elf_section_data (osec)->dynindx;

                       if (sindx == 0)
                         {
                           osec = htab->elf.text_index_section;
                           sindx = elf_section_data (osec)->dynindx;
                         }
                       BFD_ASSERT (sindx != 0);

                       /* We are turning this relocation into one
                          against a section symbol, so subtract out
                          the output section's address but not the
                          offset of the input section in the output
                          section.  */
                       outrel.r_addend -= osec->vma;
                     }
                    outrel.r_info = ELF64_R_INFO (sindx, r_type);
                  }
              }

             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;

         /* Relocations for tls literal pool entries.  */
       case R_390_TLS_IE64:
         if (info->shared)
           {
             Elf_Internal_Rela outrel;
             asection *sreloc;
             bfd_byte *loc;

             outrel.r_offset = rel->r_offset
                            + input_section->output_section->vma
                            + input_section->output_offset;
             outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
             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_reloc_out (output_bfd, &outrel, loc);
           }
         /* Fall through.  */

       case R_390_TLS_GD64:
       case R_390_TLS_GOTIE64:
         r_type = elf_s390_tls_transition (info, r_type, h == NULL);
         tls_type = GOT_UNKNOWN;
         if (h == NULL && local_got_offsets)
           tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
         else if (h != NULL)
           {
             tls_type = elf_s390_hash_entry(h)->tls_type;
             if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
              r_type = R_390_TLS_LE64;
           }
         if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
           r_type = R_390_TLS_IE64;

         if (r_type == R_390_TLS_LE64)
           {
             /* This relocation gets optimized away by the local exec
               access optimization.  */
             BFD_ASSERT (! unresolved_reloc);
             bfd_put_64 (output_bfd, -tpoff (info, relocation),
                       contents + rel->r_offset);
             continue;
           }

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

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

             off = local_got_offsets[r_symndx];
           }

       emit_tls_relocs:

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

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

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

             indx = h && h->dynindx != -1 ? h->dynindx : 0;
             if (r_type == R_390_TLS_GD64)
              dr_type = R_390_TLS_DTPMOD;
             else
              dr_type = R_390_TLS_TPOFF;
             if (dr_type == R_390_TLS_TPOFF && indx == 0)
              outrel.r_addend = relocation - dtpoff_base (info);
             else
              outrel.r_addend = 0;
             outrel.r_info = ELF64_R_INFO (indx, dr_type);
             loc = htab->srelgot->contents;
             loc += htab->srelgot->reloc_count++
              * sizeof (Elf64_External_Rela);
             bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);

             if (r_type == R_390_TLS_GD64)
              {
                if (indx == 0)
                  {
                    BFD_ASSERT (! unresolved_reloc);
                    bfd_put_64 (output_bfd,
                              relocation - dtpoff_base (info),
                              htab->sgot->contents + off + GOT_ENTRY_SIZE);
                  }
                else
                  {
                    outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
                    outrel.r_offset += GOT_ENTRY_SIZE;
                    outrel.r_addend = 0;
                    htab->srelgot->reloc_count++;
                    loc += sizeof (Elf64_External_Rela);
                    bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
                  }
              }

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

         if (off >= (bfd_vma) -2)
           abort ();
         if (r_type == ELF64_R_TYPE (rel->r_info))
           {
             relocation = htab->sgot->output_offset + off;
             if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
              relocation += htab->sgot->output_section->vma;
             unresolved_reloc = FALSE;
           }
         else
           {
             bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
                       contents + rel->r_offset);
             continue;
           }
         break;

       case R_390_TLS_GOTIE12:
       case R_390_TLS_GOTIE20:
       case R_390_TLS_IEENT:
         if (h == NULL)
           {
             if (local_got_offsets == NULL)
              abort();
             off = local_got_offsets[r_symndx];
             if (info->shared)
              goto emit_tls_relocs;
           }
         else
           {
             off = h->got.offset;
             tls_type = elf_s390_hash_entry(h)->tls_type;
             if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
              goto emit_tls_relocs;
           }

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

         BFD_ASSERT (! unresolved_reloc);
         bfd_put_64 (output_bfd, -tpoff (info, relocation),
                    htab->sgot->contents + off);
         relocation = htab->sgot->output_offset + off;
         if (r_type == R_390_TLS_IEENT)
           relocation += htab->sgot->output_section->vma;
         unresolved_reloc = FALSE;
         break;

       case R_390_TLS_LDM64:
         if (! info->shared)
           /* The literal pool entry this relocation refers to gets ignored
              by the optimized code of the local exec model. Do nothing
              and the value will turn out zero.  */
           continue;

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

         off = htab->tls_ldm_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 + GOT_ENTRY_SIZE);
             outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
             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_ldm_got.offset |= 1;
           }
         relocation = htab->sgot->output_offset + off;
         unresolved_reloc = FALSE;
         break;

       case R_390_TLS_LE64:
         if (info->shared)
           {
             /* Linking a shared library with non-fpic code requires
               a R_390_TLS_TPOFF relocation.  */
             Elf_Internal_Rela outrel;
             asection *sreloc;
             bfd_byte *loc;
             int indx;

             outrel.r_offset = rel->r_offset
                            + input_section->output_section->vma
                            + input_section->output_offset;
             if (h != NULL && h->dynindx != -1)
              indx = h->dynindx;
             else
              indx = 0;
             outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
             if (indx == 0)
              outrel.r_addend = relocation - dtpoff_base (info);
             else
              outrel.r_addend = 0;
             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);
           }
         else
           {
             BFD_ASSERT (! unresolved_reloc);
             bfd_put_64 (output_bfd, -tpoff (info, relocation),
                       contents + rel->r_offset);
           }
         continue;

       case R_390_TLS_LDO64:
         if (info->shared)
           relocation -= dtpoff_base (info);
         else
           /* When converting LDO to LE, we must negate.  */
           relocation = -tpoff (info, relocation);
         break;

         /* Relocations for tls instructions.  */
       case R_390_TLS_LOAD:
       case R_390_TLS_GDCALL:
       case R_390_TLS_LDCALL:
         tls_type = GOT_UNKNOWN;
         if (h == NULL && local_got_offsets)
           tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
         else if (h != NULL)
           tls_type = elf_s390_hash_entry(h)->tls_type;

         if (tls_type == GOT_TLS_GD)
           continue;

         if (r_type == R_390_TLS_LOAD)
           {
             if (!info->shared && (h == NULL || h->dynindx == -1))
              {
                /* IE->LE transition. Four valid cases:
                   lg %rx,(0,%ry)    -> sllg %rx,%ry,0
                   lg %rx,(%ry,0)    -> sllg %rx,%ry,0
                   lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
                   lg %rx,(%r12,%ry) -> sllg %rx,%ry,0  */
                unsigned int insn0, insn1, ry;

                insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
                insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
                if (insn1 != 0x0004)
                  invalid_tls_insn (input_bfd, input_section, rel);
                ry = 0;
                if ((insn0 & 0xff00f000) == 0xe3000000)
                  /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0  */
                  ry = (insn0 & 0x000f0000);
                else if ((insn0 & 0xff0f0000) == 0xe3000000)
                  /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0  */
                  ry = (insn0 & 0x0000f000) << 4;
                else if ((insn0 & 0xff00f000) == 0xe300c000)
                  /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0  */
                  ry = (insn0 & 0x000f0000);
                else if ((insn0 & 0xff0f0000) == 0xe30c0000)
                  /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0  */
                  ry = (insn0 & 0x0000f000) << 4;
                else
                  invalid_tls_insn (input_bfd, input_section, rel);
                insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
                insn1 = 0x000d;
                bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
                bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
              }
           }
         else if (r_type == R_390_TLS_GDCALL)
           {
             unsigned int insn0, insn1;

             insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
             insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
             if ((insn0 & 0xffff0000) != 0xc0e50000)
              invalid_tls_insn (input_bfd, input_section, rel);
             if (!info->shared && (h == NULL || h->dynindx == -1))
              {
                /* GD->LE transition.
                   brasl %r14,__tls_get_addr@plt -> brcl 0,. */
                insn0 = 0xc0040000;
                insn1 = 0x0000;
              }
             else
              {
                /* GD->IE transition.
                   brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12)  */
                insn0 = 0xe322c000;
                insn1 = 0x0004;
              }
             bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
             bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
           }
         else if (r_type == R_390_TLS_LDCALL)
           {
             if (!info->shared)
              {
                unsigned int insn0, insn1;

                insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
                insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
                if ((insn0 & 0xffff0000) != 0xc0e50000)
                  invalid_tls_insn (input_bfd, input_section, rel);
                /* LD->LE transition.
                   brasl %r14,__tls_get_addr@plt -> brcl 0,. */
                insn0 = 0xc0040000;
                insn1 = 0x0000;
                bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
                bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
              }
           }
         continue;

       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);

      if (r_type == R_390_20
         || r_type == R_390_GOT20
         || r_type == R_390_GOTPLT20
         || r_type == R_390_TLS_GOTIE20)
       {
         relocation += rel->r_addend;
         relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
         r = _bfd_final_link_relocate (howto, input_bfd, input_section,
                                   contents, rel->r_offset,
                                   relocation, 0);
       }
      else
       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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Definition at line 1973 of file elf64-s390.c.

{
  struct elf_s390_link_hash_table *htab;
  bfd *dynobj;
  asection *s;
  bfd_boolean relocs;
  bfd *ibfd;

  htab = elf_s390_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_size_type locsymcount;
      Elf_Internal_Shdr *symtab_hdr;
      asection *srela;

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

      for (s = ibfd->sections; s != NULL; s = s->next)
       {
         struct elf_s390_dyn_relocs *p;

         for (p = 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)
              {
                srela = elf_section_data (p->sec)->sreloc;
                srela->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 = elf_s390_local_got_tls_type (ibfd);
      s = htab->sgot;
      srela = htab->srelgot;
      for (; local_got < end_local_got; ++local_got, ++local_tls_type)
       {
         if (*local_got > 0)
           {
             *local_got = s->size;
             s->size += GOT_ENTRY_SIZE;
             if (*local_tls_type == GOT_TLS_GD)
              s->size += GOT_ENTRY_SIZE;
             if (info->shared)
              srela->size += sizeof (Elf64_External_Rela);
           }
         else
           *local_got = (bfd_vma) -1;
       }
    }

  if (htab->tls_ldm_got.refcount > 0)
    {
      /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
        relocs.  */
      htab->tls_ldm_got.offset = htab->sgot->size;
      htab->sgot->size += 2 * GOT_ENTRY_SIZE;
      htab->srelgot->size += sizeof (Elf64_External_Rela);
    }
  else
    htab->tls_ldm_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);

  /* 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.  */
         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 to handle .rela.bss and
            .rela.plt.  We must create it in
            create_dynamic_sections, because it 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_390_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 elf_s390_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 (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 int elf_s390_tls_transition ( struct bfd_link_info info,
int  r_type,
int  is_local 
) [static]

Definition at line 891 of file elf64-s390.c.

{
  if (info->shared)
    return r_type;

  switch (r_type)
    {
    case R_390_TLS_GD64:
    case R_390_TLS_IE64:
      if (is_local)
       return R_390_TLS_LE64;
      return R_390_TLS_IE64;
    case R_390_TLS_GOTIE64:
      if (is_local)
       return R_390_TLS_LE64;
      return R_390_TLS_GOTIE64;
    case R_390_TLS_LDM64:
      return R_390_TLS_LE64;
    }

  return r_type;
}

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static void invalid_tls_insn ( bfd input_bfd,
asection input_section,
Elf_Internal_Rela rel 
) [static]

Definition at line 2224 of file elf64-s390.c.

{
  reloc_howto_type *howto;

  howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
  (*_bfd_error_handler)
    (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
     input_bfd,
     input_section,
     (long) rel->r_offset,
     howto->name);
  bfd_set_error (bfd_error_bad_value);
}

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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 699 of file elf64-s390.c.

{
  /* Allocate the structure if it has not already been allocated by a
     subclass.  */
  if (entry == NULL)
    {
      entry = bfd_hash_allocate (table,
                             sizeof (struct elf_s390_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 elf_s390_link_hash_entry *eh;

      eh = (struct elf_s390_link_hash_entry *) entry;
      eh->dyn_relocs = NULL;
      eh->gotplt_refcount = 0;
      eh->tls_type = GOT_UNKNOWN;
    }

  return entry;
}

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static reloc_howto_type* elf_s390_reloc_type_lookup PARAMS ( (bfd *, bfd_reloc_code_real_type ) [static]
static void elf_s390_info_to_howto PARAMS ( (bfd *, arelent *, Elf_Internal_Rela *)  ) [static]
static bfd_boolean elf_s390_is_local_label_name PARAMS ( (bfd *, const char *)  ) [static]
static bfd_boolean elf_s390_relocate_section PARAMS ( (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)  ) [static]
static enum elf_reloc_type_class PARAMS ( (const Elf_Internal_Rela *)  ) [static, abstract]
static bfd_reloc_status_type s390_tls_reloc PARAMS ( (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)  ) [static]
static bfd_vma dtpoff_base PARAMS ( (struct bfd_link_info *)  ) [static]
static bfd_vma tpoff PARAMS ( (struct bfd_link_info *, bfd_vma ) [static]
static void invalid_tls_insn PARAMS ( (bfd *, asection *, Elf_Internal_Rela *)  ) [static]
static bfd_boolean readonly_dynrelocs ( struct elf_link_hash_entry h,
PTR  inf 
) [static]

Definition at line 1942 of file elf64-s390.c.

{
  struct elf_s390_link_hash_entry *eh;
  struct elf_s390_dyn_relocs *p;

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

  eh = (struct elf_s390_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_reloc_status_type s390_elf_ldisp_reloc ( bfd abfd,
arelent reloc_entry,
asymbol symbol,
PTR  data,
asection input_section,
bfd output_bfd,
error_message   
) [static]

Definition at line 430 of file elf64-s390.c.

{
  reloc_howto_type *howto = reloc_entry->howto;
  bfd_vma relocation;
  bfd_vma insn;

  if (output_bfd != (bfd *) NULL
      && (symbol->flags & BSF_SECTION_SYM) == 0
      && (! howto->partial_inplace
         || reloc_entry->addend == 0))
    {
      reloc_entry->address += input_section->output_offset;
      return bfd_reloc_ok;
    }
  if (output_bfd != NULL)
    return bfd_reloc_continue;

  if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    return bfd_reloc_outofrange;

  relocation = (symbol->value
              + symbol->section->output_section->vma
              + symbol->section->output_offset);
  relocation += reloc_entry->addend;
  if (howto->pc_relative)
    {
      relocation -= (input_section->output_section->vma
                   + input_section->output_offset);
      relocation -= reloc_entry->address;
    }

  insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 
  insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
  bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);

  if ((bfd_signed_vma) relocation < - 0x80000
      || (bfd_signed_vma) relocation > 0x7ffff)
    return bfd_reloc_overflow;
  else
    return bfd_reloc_ok;
}
static bfd_reloc_status_type s390_tls_reloc ( abfd  ,
arelent reloc_entry,
symbol  ,
data  ,
asection input_section,
bfd output_bfd,
error_message   
) [static]

Definition at line 413 of file elf64-s390.c.

{
  if (output_bfd)
    reloc_entry->address += input_section->output_offset;
  return bfd_reloc_ok;
}
static bfd_vma tpoff ( struct bfd_link_info info,
bfd_vma  address 
) [static]

Definition at line 2208 of file elf64-s390.c.

{
  struct elf_link_hash_table *htab = elf_hash_table (info);

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

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Variable Documentation

reloc_howto_type elf64_s390_vtentry_howto [static]
Initial value:
  HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE)

Definition at line 227 of file elf64-s390.c.

reloc_howto_type elf64_s390_vtinherit_howto [static]
Initial value:
  HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE)

Definition at line 225 of file elf64-s390.c.

reloc_howto_type elf_howto_table[] [static]

Definition at line 92 of file elf64-s390.c.