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cell-binutils  2.17cvs20070401
Classes | Defines | Functions | Variables
elf32-m68k.c File Reference
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/m68k.h"
#include "opcode/m68k.h"
#include "elf32-target.h"

Go to the source code of this file.

Classes

struct  elf_m68k_plt_info
struct  elf_m68k_pcrel_relocs_copied
struct  elf_m68k_link_hash_entry
struct  elf_m68k_plt_info.plt0_relocs
struct  elf_m68k_plt_info.symbol_relocs

Defines

#define elf_info_to_howto   rtype_to_howto
#define bfd_elf32_bfd_reloc_type_lookup   reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup   reloc_name_lookup
#define ELF_ARCH   bfd_arch_m68k
#define ELF_DYNAMIC_INTERPRETER   "/usr/lib/libc.so.1"
#define PLT_ENTRY_SIZE   20
#define ISAB_PLT_ENTRY_SIZE   24
#define CPU32_PLT_ENTRY_SIZE   24
#define elf_m68k_hash_entry(ent)   ((struct elf_m68k_link_hash_entry *) (ent))
#define elf_m68k_hash_table(p)   ((struct elf_m68k_link_hash_table *) (p)->hash)
#define add_dynamic_entry(TAG, VAL)   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
#define TARGET_BIG_SYM   bfd_elf32_m68k_vec
#define TARGET_BIG_NAME   "elf32-m68k"
#define ELF_MACHINE_CODE   EM_68K
#define ELF_MAXPAGESIZE   0x2000
#define elf_backend_create_dynamic_sections   _bfd_elf_create_dynamic_sections
#define bfd_elf32_bfd_link_hash_table_create   elf_m68k_link_hash_table_create
#define bfd_elf32_bfd_final_link   bfd_elf_gc_common_final_link
#define elf_backend_check_relocs   elf_m68k_check_relocs
#define elf_backend_always_size_sections   elf_m68k_always_size_sections
#define elf_backend_adjust_dynamic_symbol   elf_m68k_adjust_dynamic_symbol
#define elf_backend_size_dynamic_sections   elf_m68k_size_dynamic_sections
#define elf_backend_init_index_section   _bfd_elf_init_1_index_section
#define elf_backend_relocate_section   elf_m68k_relocate_section
#define elf_backend_finish_dynamic_symbol   elf_m68k_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections   elf_m68k_finish_dynamic_sections
#define elf_backend_gc_mark_hook   elf_m68k_gc_mark_hook
#define elf_backend_gc_sweep_hook   elf_m68k_gc_sweep_hook
#define bfd_elf32_bfd_merge_private_bfd_data   elf32_m68k_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags   elf32_m68k_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data   elf32_m68k_print_private_bfd_data
#define elf_backend_reloc_type_class   elf32_m68k_reloc_type_class
#define elf_backend_plt_sym_val   elf_m68k_plt_sym_val
#define elf_backend_object_p   elf32_m68k_object_p
#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   12
#define elf_backend_rela_normal   1

Functions

static reloc_howto_type
*reloc_type_lookup 
PARAMS ((bfd *, bfd_reloc_code_real_type))
static void rtype_to_howto PARAMS ((bfd *, arelent *, Elf_Internal_Rela *))
static struct bfd_hash_entry
*elf_m68k_link_hash_newfunc 
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *))
static struct
bfd_link_hash_table
*elf_m68k_link_hash_table_create 
PARAMS ((bfd *))
static bfd_boolean
elf_m68k_check_relocs 
PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *))
static bfd_boolean
elf_m68k_adjust_dynamic_symbol 
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *))
static bfd_boolean
elf_m68k_size_dynamic_sections 
PARAMS ((bfd *, struct bfd_link_info *))
static bfd_boolean
elf_m68k_discard_copies 
PARAMS ((struct elf_link_hash_entry *, PTR))
static bfd_boolean
elf_m68k_relocate_section 
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **))
static bfd_boolean
elf_m68k_finish_dynamic_symbol 
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, Elf_Internal_Sym *))
static bfd_boolean
elf32_m68k_set_private_flags 
PARAMS ((bfd *, flagword))
static bfd_boolean
elf32_m68k_merge_private_bfd_data 
PARAMS ((bfd *, bfd *))
static bfd_boolean
elf32_m68k_print_private_bfd_data 
PARAMS ((bfd *, PTR))
static enum elf_reloc_type_class PARAMS ((const Elf_Internal_Rela *))
static void rtype_to_howto (abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
static reloc_howto_type * reloc_type_lookup (abfd, bfd_reloc_code_real_type code)
static reloc_howto_type * reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
static struct bfd_hash_entryelf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, const char *string)
static struct bfd_link_hash_tableelf_m68k_link_hash_table_create (bfd *abfd)
static bfd_boolean elf32_m68k_object_p (bfd *abfd)
static bfd_boolean elf32_m68k_set_private_flags (bfd *abfd, flagword flags)
static bfd_boolean elf32_m68k_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
static bfd_boolean elf32_m68k_print_private_bfd_data (bfd *abfd, PTR ptr)
static bfd_boolean elf_m68k_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, const Elf_Internal_Rela *relocs)
static asectionelf_m68k_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_m68k_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, const Elf_Internal_Rela *relocs)
static struct elf_m68k_plt_infoelf_m68k_get_plt_info (bfd *output_bfd)
static bfd_boolean elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
static bfd_boolean elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info, struct elf_link_hash_entry *h)
static bfd_boolean elf_m68k_size_dynamic_sections (output_bfd, struct bfd_link_info *info)
static bfd_boolean elf_m68k_discard_copies (struct elf_link_hash_entry *h, PTR inf)
static bfd_boolean elf_m68k_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 void elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
static bfd_boolean elf_m68k_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
static bfd_boolean elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
bfd_boolean bfd_m68k_elf32_create_embedded_relocs (bfd *abfd, struct bfd_link_info *info, asection *datasec, asection *relsec, char **errmsg)
static enum elf_reloc_type_class elf32_m68k_reloc_type_class (Elf_Internal_Rela *rela) const
static bfd_vma elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel ATTRIBUTE_UNUSED)

Variables

static reloc_howto_type howto_table []
struct {
bfd_reloc_code_real_type bfd_val
int elf_val
reloc_map []
static const bfd_byte elf_m68k_plt0_entry [PLT_ENTRY_SIZE]
static const bfd_byte elf_m68k_plt_entry [PLT_ENTRY_SIZE]
static struct elf_m68k_plt_info
static const bfd_byte elf_isab_plt0_entry [ISAB_PLT_ENTRY_SIZE]
static const bfd_byte elf_isab_plt_entry [ISAB_PLT_ENTRY_SIZE]
static const bfd_byte elf_cpu32_plt0_entry [CPU32_PLT_ENTRY_SIZE]
static const bfd_byte elf_cpu32_plt_entry [CPU32_PLT_ENTRY_SIZE]

Class Documentation

struct elf_m68k_plt_info

Definition at line 203 of file elf32-m68k.c.

Class Members
const bfd_byte * plt0_entry
struct elf_m68k_plt_info plt0_relocs
bfd_vma size
const bfd_byte * symbol_entry
struct elf_m68k_plt_info symbol_relocs
bfd_vma symbol_resolve_entry
struct elf_m68k_pcrel_relocs_copied

Definition at line 343 of file elf32-m68k.c.

Collaboration diagram for elf_m68k_pcrel_relocs_copied:
Class Members
bfd_size_type count
struct
elf_m68k_pcrel_relocs_copied *
next
asection * section
struct elf_m68k_link_hash_entry

Definition at line 355 of file elf32-m68k.c.

Collaboration diagram for elf_m68k_link_hash_entry:
Class Members
struct
elf_m68k_pcrel_relocs_copied *
pcrel_relocs_copied
struct elf_m68k_link_hash_table

Definition at line 367 of file elf32-m68k.c.

Collaboration diagram for elf_m68k_link_hash_table:
Class Members
struct elf_m68k_plt_info * plt_info
struct elf_m68k_plt_info.plt0_relocs

Definition at line 214 of file elf32-m68k.c.

Class Members
unsigned int got4
unsigned int got8
struct elf_m68k_plt_info.symbol_relocs

Definition at line 225 of file elf32-m68k.c.

Class Members
unsigned int got
unsigned int plt

Define Documentation

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

Definition at line 2471 of file elf32-m68k.c.

Definition at line 2469 of file elf32-m68k.c.

Definition at line 2488 of file elf32-m68k.c.

Definition at line 2492 of file elf32-m68k.c.

Definition at line 191 of file elf32-m68k.c.

Definition at line 190 of file elf32-m68k.c.

Definition at line 2490 of file elf32-m68k.c.

#define CPU32_PLT_ENTRY_SIZE   24

Definition at line 303 of file elf32-m68k.c.

#define ELF_ARCH   bfd_arch_m68k

Definition at line 192 of file elf32-m68k.c.

Definition at line 2476 of file elf32-m68k.c.

Definition at line 2474 of file elf32-m68k.c.

Definition at line 2498 of file elf32-m68k.c.

#define elf_backend_can_refcount   1

Definition at line 2499 of file elf32-m68k.c.

Definition at line 2473 of file elf32-m68k.c.

Definition at line 2467 of file elf32-m68k.c.

Definition at line 2484 of file elf32-m68k.c.

Definition at line 2482 of file elf32-m68k.c.

Definition at line 2486 of file elf32-m68k.c.

Definition at line 2487 of file elf32-m68k.c.

#define elf_backend_got_header_size   12

Definition at line 2503 of file elf32-m68k.c.

Definition at line 2480 of file elf32-m68k.c.

Definition at line 2496 of file elf32-m68k.c.

#define elf_backend_plt_readonly   1

Definition at line 2501 of file elf32-m68k.c.

Definition at line 2495 of file elf32-m68k.c.

#define elf_backend_rela_normal   1

Definition at line 2504 of file elf32-m68k.c.

Definition at line 2494 of file elf32-m68k.c.

Definition at line 2481 of file elf32-m68k.c.

Definition at line 2478 of file elf32-m68k.c.

#define elf_backend_want_got_plt   1

Definition at line 2500 of file elf32-m68k.c.

#define elf_backend_want_plt_sym   0

Definition at line 2502 of file elf32-m68k.c.

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

Definition at line 199 of file elf32-m68k.c.

Definition at line 128 of file elf32-m68k.c.

#define elf_m68k_hash_entry (   ent)    ((struct elf_m68k_link_hash_entry *) (ent))

Definition at line 363 of file elf32-m68k.c.

#define elf_m68k_hash_table (   p)    ((struct elf_m68k_link_hash_table *) (p)->hash)

Definition at line 381 of file elf32-m68k.c.

#define ELF_MACHINE_CODE   EM_68K

Definition at line 2465 of file elf32-m68k.c.

#define ELF_MAXPAGESIZE   0x2000

Definition at line 2466 of file elf32-m68k.c.

#define ISAB_PLT_ENTRY_SIZE   24

Definition at line 269 of file elf32-m68k.c.

#define PLT_ENTRY_SIZE   20

Definition at line 237 of file elf32-m68k.c.

#define TARGET_BIG_NAME   "elf32-m68k"

Definition at line 2464 of file elf32-m68k.c.

Definition at line 2463 of file elf32-m68k.c.


Function Documentation

bfd_boolean bfd_m68k_elf32_create_embedded_relocs ( bfd abfd,
struct bfd_link_info info,
asection datasec,
asection relsec,
char **  errmsg 
)

Definition at line 2321 of file elf32-m68k.c.

{
  Elf_Internal_Shdr *symtab_hdr;
  Elf_Internal_Sym *isymbuf = NULL;
  Elf_Internal_Rela *internal_relocs = NULL;
  Elf_Internal_Rela *irel, *irelend;
  bfd_byte *p;
  bfd_size_type amt;

  BFD_ASSERT (! info->relocatable);

  *errmsg = NULL;

  if (datasec->reloc_count == 0)
    return TRUE;

  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;

  /* Get a copy of the native relocations.  */
  internal_relocs = (_bfd_elf_link_read_relocs
                   (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
                    info->keep_memory));
  if (internal_relocs == NULL)
    goto error_return;

  amt = (bfd_size_type) datasec->reloc_count * 12;
  relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
  if (relsec->contents == NULL)
    goto error_return;

  p = relsec->contents;

  irelend = internal_relocs + datasec->reloc_count;
  for (irel = internal_relocs; irel < irelend; irel++, p += 12)
    {
      asection *targetsec;

      /* We are going to write a four byte longword into the runtime
       reloc section.  The longword will be the address in the data
       section which must be relocated.  It is followed by the name
       of the target section NUL-padded or truncated to 8
       characters.  */

      /* We can only relocate absolute longword relocs at run time.  */
      if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
       {
         *errmsg = _("unsupported reloc type");
         bfd_set_error (bfd_error_bad_value);
         goto error_return;
       }

      /* Get the target section referred to by the reloc.  */
      if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
       {
         /* A local symbol.  */
         Elf_Internal_Sym *isym;

         /* Read this BFD's local symbols if we haven't done so already.  */
         if (isymbuf == NULL)
           {
             isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
             if (isymbuf == NULL)
              isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
                                          symtab_hdr->sh_info, 0,
                                          NULL, NULL, NULL);
             if (isymbuf == NULL)
              goto error_return;
           }

         isym = isymbuf + ELF32_R_SYM (irel->r_info);
         targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
       }
      else
       {
         unsigned long indx;
         struct elf_link_hash_entry *h;

         /* An external symbol.  */
         indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
         h = elf_sym_hashes (abfd)[indx];
         BFD_ASSERT (h != NULL);
         if (h->root.type == bfd_link_hash_defined
             || h->root.type == bfd_link_hash_defweak)
           targetsec = h->root.u.def.section;
         else
           targetsec = NULL;
       }

      bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
      memset (p + 4, 0, 8);
      if (targetsec != NULL)
       strncpy ((char *) p + 4, targetsec->output_section->name, 8);
    }

  if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
    free (isymbuf);
  if (internal_relocs != NULL
      && elf_section_data (datasec)->relocs != internal_relocs)
    free (internal_relocs);
  return TRUE;

error_return:
  if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
    free (isymbuf);
  if (internal_relocs != NULL
      && elf_section_data (datasec)->relocs != internal_relocs)
    free (internal_relocs);
  return FALSE;
}

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static bfd_boolean elf32_m68k_merge_private_bfd_data ( bfd ibfd,
bfd obfd 
) [static]

Definition at line 505 of file elf32-m68k.c.

{
  flagword out_flags;
  flagword in_flags;
  flagword out_isa;
  flagword in_isa;
  const bfd_arch_info_type *arch_info;
  
  if (   bfd_get_flavour (ibfd) != bfd_target_elf_flavour
      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
    return FALSE;

  /* Get the merged machine.  This checks for incompatibility between
     Coldfire & non-Coldfire flags, incompability between different
     Coldfire ISAs, and incompability between different MAC types.  */
  arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
  if (!arch_info)
    return FALSE;

  bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
  
  in_flags = elf_elfheader (ibfd)->e_flags;
  if (!elf_flags_init (obfd))
    {
      elf_flags_init (obfd) = TRUE;
      out_flags = in_flags;
    }
  else
    {
      out_flags = elf_elfheader (obfd)->e_flags;
      unsigned int variant_mask;

      if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
       variant_mask = 0;
      else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
       variant_mask = 0;
      else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
       variant_mask = 0;
      else
       variant_mask = EF_M68K_CF_ISA_MASK;

      in_isa = (in_flags & variant_mask);
      out_isa = (out_flags & variant_mask);
      if (in_isa > out_isa)
       out_flags ^= in_isa ^ out_isa;
      if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
          && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
         || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
             && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
       out_flags = EF_M68K_FIDO;
      else
      out_flags |= in_flags ^ in_isa;
    }
  elf_elfheader (obfd)->e_flags = out_flags;

  return TRUE;
}

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static bfd_boolean elf32_m68k_object_p ( bfd abfd) [static]

Definition at line 440 of file elf32-m68k.c.

{
  unsigned int mach = 0;
  unsigned features = 0;
  flagword eflags = elf_elfheader (abfd)->e_flags;

  if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
    features |= m68000;
  else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
    features |= cpu32;
  else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
    features |= fido_a;
  else
    {
      switch (eflags & EF_M68K_CF_ISA_MASK)
       {
       case EF_M68K_CF_ISA_A_NODIV:
         features |= mcfisa_a;
         break;
       case EF_M68K_CF_ISA_A:
         features |= mcfisa_a|mcfhwdiv;
         break;
       case EF_M68K_CF_ISA_A_PLUS:
         features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
         break;
       case EF_M68K_CF_ISA_B_NOUSP:
         features |= mcfisa_a|mcfisa_b|mcfhwdiv;
         break;
       case EF_M68K_CF_ISA_B:
         features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
         break;
       }
      switch (eflags & EF_M68K_CF_MAC_MASK)
       {
       case EF_M68K_CF_MAC:
         features |= mcfmac;
         break;
       case EF_M68K_CF_EMAC:
         features |= mcfemac;
         break;
       }
      if (eflags & EF_M68K_CF_FLOAT)
       features |= cfloat;
    }

  mach = bfd_m68k_features_to_mach (features);
  bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);

  return TRUE;
}

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static bfd_boolean elf32_m68k_print_private_bfd_data ( bfd abfd,
PTR  ptr 
) [static]

Definition at line 567 of file elf32-m68k.c.

{
  FILE *file = (FILE *) ptr;
  flagword eflags = elf_elfheader (abfd)->e_flags;

  BFD_ASSERT (abfd != NULL && ptr != NULL);

  /* Print normal ELF private data.  */
  _bfd_elf_print_private_bfd_data (abfd, ptr);

  /* Ignore init flag - it may not be set, despite the flags field containing valid data.  */

  /* xgettext:c-format */
  fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);

  if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
    fprintf (file, " [m68000]");
  else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
    fprintf (file, " [cpu32]");
  else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
    fprintf (file, " [fido]");
  else
    {
      if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
       fprintf (file, " [cfv4e]");

      if (eflags & EF_M68K_CF_ISA_MASK)
       {
         char const *isa = _("unknown");
         char const *mac = _("unknown");
         char const *additional = "";
      
         switch (eflags & EF_M68K_CF_ISA_MASK)
           {
           case EF_M68K_CF_ISA_A_NODIV:
             isa = "A";
             additional = " [nodiv]";
             break;
           case EF_M68K_CF_ISA_A:
             isa = "A";
             break;
           case EF_M68K_CF_ISA_A_PLUS:
             isa = "A+";
             break;
           case EF_M68K_CF_ISA_B_NOUSP:
             isa = "B";
             additional = " [nousp]";
             break;
           case EF_M68K_CF_ISA_B:
             isa = "B";
             break;
           }
         fprintf (file, " [isa %s]%s", isa, additional);
         if (eflags & EF_M68K_CF_FLOAT)
           fprintf (file, " [float]");
         switch (eflags & EF_M68K_CF_MAC_MASK)
           {
           case 0:
             mac = NULL;
             break;
           case EF_M68K_CF_MAC:
             mac = "mac";
             break;
           case EF_M68K_CF_EMAC:
             mac = "emac";
             break;
           }
         if (mac)
           fprintf (file, " [%s]", mac);
       }
    }
  
  fputc ('\n', file);

  return TRUE;
}

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static enum elf_reloc_type_class elf32_m68k_reloc_type_class ( Elf_Internal_Rela rela) const [static]

Definition at line 2437 of file elf32-m68k.c.

{
  switch ((int) ELF32_R_TYPE (rela->r_info))
    {
    case R_68K_RELATIVE:
      return reloc_class_relative;
    case R_68K_JMP_SLOT:
      return reloc_class_plt;
    case R_68K_COPY:
      return reloc_class_copy;
    default:
      return reloc_class_normal;
    }
}
static bfd_boolean elf32_m68k_set_private_flags ( bfd abfd,
flagword  flags 
) [static]

Definition at line 493 of file elf32-m68k.c.

{
  elf_elfheader (abfd)->e_flags = flags;
  elf_flags_init (abfd) = TRUE;
  return TRUE;
}

Definition at line 1169 of file elf32-m68k.c.

{
  struct elf_m68k_link_hash_table *htab;
  bfd *dynobj;
  asection *s;
  unsigned int power_of_two;

  htab = elf_m68k_hash_table (info);
  dynobj = elf_hash_table (info)->dynobj;

  /* Make sure we know what is going on here.  */
  BFD_ASSERT (dynobj != NULL
             && (h->needs_plt
                || h->u.weakdef != NULL
                || (h->def_dynamic
                    && h->ref_regular
                    && !h->def_regular)));

  /* If this is a function, put it in the procedure linkage table.  We
     will fill in the contents of the procedure linkage table later,
     when we know the address of the .got section.  */
  if (h->type == STT_FUNC
      || h->needs_plt)
    {
      if ((h->plt.refcount <= 0
           || SYMBOL_CALLS_LOCAL (info, h)
          || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
              && h->root.type == bfd_link_hash_undefweak))
         /* We must always create the plt entry if it was referenced
            by a PLTxxO relocation.  In this case we already recorded
            it as a dynamic symbol.  */
         && h->dynindx == -1)
       {
         /* This case can occur if we saw a PLTxx 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 PCxx reloc instead.  */
         h->plt.offset = (bfd_vma) -1;
         h->needs_plt = 0;
         return TRUE;
       }

      /* Make sure this symbol is output as a dynamic symbol.  */
      if (h->dynindx == -1
         && !h->forced_local)
       {
         if (! bfd_elf_link_record_dynamic_symbol (info, h))
           return FALSE;
       }

      s = bfd_get_section_by_name (dynobj, ".plt");
      BFD_ASSERT (s != NULL);

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

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

      /* Make room for this entry.  */
      s->size += htab->plt_info->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.  */
      s = bfd_get_section_by_name (dynobj, ".got.plt");
      BFD_ASSERT (s != NULL);
      s->size += 4;

      /* We also need to make an entry in the .rela.plt section.  */
      s = bfd_get_section_by_name (dynobj, ".rela.plt");
      BFD_ASSERT (s != NULL);
      s->size += sizeof (Elf32_External_Rela);

      return TRUE;
    }

  /* Reinitialize the plt offset now that it is not used as a reference
     count any more.  */
  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;
      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 (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.  */

  s = bfd_get_section_by_name (dynobj, ".dynbss");
  BFD_ASSERT (s != NULL);

  /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
     copy the initial value out of the dynamic object and into the
     runtime process image.  We need to remember the offset into the
     .rela.bss section we are going to use.  */
  if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
    {
      asection *srel;

      srel = bfd_get_section_by_name (dynobj, ".rela.bss");
      BFD_ASSERT (srel != NULL);
      srel->size += sizeof (Elf32_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->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
  if (power_of_two > bfd_get_section_alignment (dynobj, s))
    {
      if (!bfd_set_section_alignment (dynobj, s, power_of_two))
       return FALSE;
    }

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

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

  return TRUE;
}

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static bfd_boolean elf_m68k_always_size_sections ( bfd output_bfd,
struct bfd_link_info info 
) [static]

Definition at line 1156 of file elf32-m68k.c.

{
  elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
  return TRUE;
}

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static bfd_boolean elf_m68k_check_relocs ( bfd abfd,
struct bfd_link_info info,
asection sec,
const Elf_Internal_Rela relocs 
) [static]

Definition at line 650 of file elf32-m68k.c.

{
  bfd *dynobj;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  bfd_signed_vma *local_got_refcounts;
  const Elf_Internal_Rela *rel;
  const Elf_Internal_Rela *rel_end;
  asection *sgot;
  asection *srelgot;
  asection *sreloc;

  if (info->relocatable)
    return TRUE;

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

  sgot = NULL;
  srelgot = NULL;
  sreloc = NULL;

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

      r_symndx = ELF32_R_SYM (rel->r_info);

      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;
       }

      switch (ELF32_R_TYPE (rel->r_info))
       {
       case R_68K_GOT8:
       case R_68K_GOT16:
       case R_68K_GOT32:
         if (h != NULL
             && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
           break;
         /* Fall through.  */
       case R_68K_GOT8O:
       case R_68K_GOT16O:
       case R_68K_GOT32O:
         /* This symbol requires a global offset table entry.  */

         if (dynobj == NULL)
           {
             /* Create the .got section.  */
             elf_hash_table (info)->dynobj = dynobj = abfd;
             if (!_bfd_elf_create_got_section (dynobj, info))
              return FALSE;
           }

         if (sgot == NULL)
           {
             sgot = bfd_get_section_by_name (dynobj, ".got");
             BFD_ASSERT (sgot != NULL);
           }

         if (srelgot == NULL
             && (h != NULL || info->shared))
           {
             srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
             if (srelgot == NULL)
              {
                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 (srelgot == NULL
                    || !bfd_set_section_alignment (dynobj, srelgot, 2))
                  return FALSE;
              }
           }

         if (h != NULL)
           {
             if (h->got.refcount == 0)
              {
                /* Make sure this symbol is output as a dynamic symbol.  */
                if (h->dynindx == -1
                    && !h->forced_local)
                  {
                    if (!bfd_elf_link_record_dynamic_symbol (info, h))
                     return FALSE;
                  }

                /* Allocate space in the .got section.  */
                sgot->size += 4;
                /* Allocate relocation space.  */
                srelgot->size += sizeof (Elf32_External_Rela);
              }
             h->got.refcount++;
           }
         else
           {
             /* This is a global offset table entry for a local symbol.  */
             if (local_got_refcounts == NULL)
              {
                bfd_size_type size;

                size = symtab_hdr->sh_info;
                size *= sizeof (bfd_signed_vma);
                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;
              }
             if (local_got_refcounts[r_symndx] == 0)
              {
                sgot->size += 4;
                if (info->shared)
                  {
                    /* If we are generating a shared object, we need to
                      output a R_68K_RELATIVE reloc so that the dynamic
                      linker can adjust this GOT entry.  */
                    srelgot->size += sizeof (Elf32_External_Rela);
                  }
              }
             local_got_refcounts[r_symndx]++;
           }
         break;

       case R_68K_PLT8:
       case R_68K_PLT16:
       case R_68K_PLT32:
         /* This symbol requires a procedure linkage table entry.  We
            actually build the entry in adjust_dynamic_symbol,
             because this might be a case of linking PIC code which is
             never referenced by a dynamic object, in which case we
             don't need to generate a procedure linkage table entry
             after all.  */

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

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

       case R_68K_PLT8O:
       case R_68K_PLT16O:
       case R_68K_PLT32O:
         /* This symbol requires a procedure linkage table entry.  */

         if (h == NULL)
           {
             /* It does not make sense to have this relocation for a
               local symbol.  FIXME: does it?  How to handle it if
               it does make sense?  */
             bfd_set_error (bfd_error_bad_value);
             return FALSE;
           }

         /* Make sure this symbol is output as a dynamic symbol.  */
         if (h->dynindx == -1
             && !h->forced_local)
           {
             if (!bfd_elf_link_record_dynamic_symbol (info, h))
              return FALSE;
           }

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

       case R_68K_PC8:
       case R_68K_PC16:
       case R_68K_PC32:
         /* If we are creating a shared library and this is not a local
            symbol, we need to copy the reloc into the shared library.
            However when linking with -Bsymbolic and this is a global
            symbol which is defined in an object we are including in the
            link (i.e., DEF_REGULAR is set), then we can resolve the
            reloc directly.  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).  We account for that
            possibility below by storing information in the
            pcrel_relocs_copied field of the hash table entry.  */
         if (!(info->shared
              && (sec->flags & SEC_ALLOC) != 0
              && h != NULL
              && (!info->symbolic
                  || h->root.type == bfd_link_hash_defweak
                  || !h->def_regular)))
           {
             if (h != NULL)
              {
                /* Make sure a plt entry is created for this symbol if
                   it turns out to be a function defined by a dynamic
                   object.  */
                h->plt.refcount++;
              }
             break;
           }
         /* Fall through.  */
       case R_68K_8:
       case R_68K_16:
       case R_68K_32:
         if (h != NULL)
           {
             /* Make sure a plt entry is created for this symbol if it
               turns out to be a function defined by a dynamic object.  */
             h->plt.refcount++;
           }

         /* If we are creating a shared library, we need to copy the
            reloc into the shared library.  */
         if (info->shared
             && (sec->flags & SEC_ALLOC) != 0)
           {
             /* When creating a shared object, we must copy these
               reloc types into the output file.  We create a reloc
               section in dynobj and make room for this reloc.  */
             if (sreloc == NULL)
              {
                const char *name;

                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;

                BFD_ASSERT (CONST_STRNEQ (name, ".rela")
                           && strcmp (bfd_get_section_name (abfd, sec),
                                    name + 5) == 0);

                sreloc = bfd_get_section_by_name (dynobj, name);
                if (sreloc == NULL)
                  {
                    sreloc = bfd_make_section_with_flags (dynobj,
                                                     name,
                                                     (SEC_ALLOC
                                                      | SEC_LOAD
                                                      | SEC_HAS_CONTENTS
                                                      | SEC_IN_MEMORY
                                                      | SEC_LINKER_CREATED
                                                      | SEC_READONLY));
                    if (sreloc == NULL
                       || !bfd_set_section_alignment (dynobj, sreloc, 2))
                     return FALSE;
                  }
                elf_section_data (sec)->sreloc = sreloc;
              }

             if (sec->flags & SEC_READONLY
                /* Don't set DF_TEXTREL yet for PC relative
                   relocations, they might be discarded later.  */
                && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
                     || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
                     || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
                  info->flags |= DF_TEXTREL;

             sreloc->size += sizeof (Elf32_External_Rela);

             /* We count the number of PC relative relocations we have
               entered for this symbol, so that we can discard them
               again if, in the -Bsymbolic case, the symbol is later
               defined by a regular object, or, in the normal shared
               case, the symbol is forced to be local.  Note that this
               function is only called if we are using an m68kelf linker
               hash table, which means that h is really a pointer to an
               elf_m68k_link_hash_entry.  */
             if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
                || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
                || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
              {
                struct elf_m68k_pcrel_relocs_copied *p;
                struct elf_m68k_pcrel_relocs_copied **head;

                if (h != NULL)
                  {
                    struct elf_m68k_link_hash_entry *eh
                     = elf_m68k_hash_entry (h);
                    head = &eh->pcrel_relocs_copied;
                  }
                else
                  {
                    asection *s;
                    void *vpp;

                    s = (bfd_section_from_r_symndx
                        (abfd, &elf_m68k_hash_table (info)->sym_sec,
                         sec, r_symndx));
                    if (s == NULL)
                     return FALSE;

                    vpp = &elf_section_data (s)->local_dynrel;
                    head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
                  }

                for (p = *head; p != NULL; p = p->next)
                  if (p->section == sreloc)
                    break;

                if (p == NULL)
                  {
                    p = ((struct elf_m68k_pcrel_relocs_copied *)
                        bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
                    if (p == NULL)
                     return FALSE;
                    p->next = *head;
                    *head = p;
                    p->section = sreloc;
                    p->count = 0;
                  }

                ++p->count;
              }
           }

         break;

         /* This relocation describes the C++ object vtable hierarchy.
            Reconstruct it for later use during GC.  */
       case R_68K_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_68K_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 1520 of file elf32-m68k.c.

{
  struct bfd_link_info *info = (struct bfd_link_info *) inf;
  struct elf_m68k_pcrel_relocs_copied *s;

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

  if (!h->def_regular
      || (!info->symbolic
         && !h->forced_local))
    {
      if ((info->flags & DF_TEXTREL) == 0)
       {
         /* Look for relocations against read-only sections.  */
         for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
              s != NULL;
              s = s->next)
           if ((s->section->flags & SEC_READONLY) != 0)
             {
              info->flags |= DF_TEXTREL;
              break;
             }
       }

      return TRUE;
    }

  for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
       s != NULL;
       s = s->next)
    s->section->size -= s->count * sizeof (Elf32_External_Rela);

  return TRUE;
}

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static bfd_boolean elf_m68k_finish_dynamic_sections ( bfd output_bfd,
struct bfd_link_info info 
) [static]

Definition at line 2200 of file elf32-m68k.c.

{
  bfd *dynobj;
  asection *sgot;
  asection *sdyn;

  dynobj = elf_hash_table (info)->dynobj;

  sgot = bfd_get_section_by_name (dynobj, ".got.plt");
  BFD_ASSERT (sgot != NULL);
  sdyn = bfd_get_section_by_name (dynobj, ".dynamic");

  if (elf_hash_table (info)->dynamic_sections_created)
    {
      asection *splt;
      Elf32_External_Dyn *dyncon, *dynconend;

      splt = bfd_get_section_by_name (dynobj, ".plt");
      BFD_ASSERT (splt != NULL && sdyn != NULL);

      dyncon = (Elf32_External_Dyn *) sdyn->contents;
      dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
      for (; dyncon < dynconend; dyncon++)
       {
         Elf_Internal_Dyn dyn;
         const char *name;
         asection *s;

         bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);

         switch (dyn.d_tag)
           {
           default:
             break;

           case DT_PLTGOT:
             name = ".got";
             goto get_vma;
           case DT_JMPREL:
             name = ".rela.plt";
           get_vma:
             s = bfd_get_section_by_name (output_bfd, name);
             BFD_ASSERT (s != NULL);
             dyn.d_un.d_ptr = s->vma;
             bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
             break;

           case DT_PLTRELSZ:
             s = bfd_get_section_by_name (output_bfd, ".rela.plt");
             BFD_ASSERT (s != NULL);
             dyn.d_un.d_val = s->size;
             bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
             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 = bfd_get_section_by_name (output_bfd, ".rela.plt");
             if (s != NULL)
              dyn.d_un.d_val -= s->size;
             bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
             break;
           }
       }

      /* Fill in the first entry in the procedure linkage table.  */
      if (splt->size > 0)
       {
         const struct elf_m68k_plt_info *plt_info;

         plt_info = elf_m68k_hash_table (info)->plt_info;
         memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);

         elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
                             (sgot->output_section->vma
                              + sgot->output_offset
                              + 4));

         elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
                             (sgot->output_section->vma
                              + sgot->output_offset
                              + 8));

         elf_section_data (splt->output_section)->this_hdr.sh_entsize
           = plt_info->size;
       }
    }

  /* Fill in the first three entries in the global offset table.  */
  if (sgot->size > 0)
    {
      if (sdyn == NULL)
       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
      else
       bfd_put_32 (output_bfd,
                  sdyn->output_section->vma + sdyn->output_offset,
                  sgot->contents);
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
    }

  elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;

  return TRUE;
}

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static bfd_boolean elf_m68k_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 2032 of file elf32-m68k.c.

{
  bfd *dynobj;

  dynobj = elf_hash_table (info)->dynobj;

  if (h->plt.offset != (bfd_vma) -1)
    {
      const struct elf_m68k_plt_info *plt_info;
      asection *splt;
      asection *sgot;
      asection *srela;
      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.  */

      BFD_ASSERT (h->dynindx != -1);

      plt_info = elf_m68k_hash_table (info)->plt_info;
      splt = bfd_get_section_by_name (dynobj, ".plt");
      sgot = bfd_get_section_by_name (dynobj, ".got.plt");
      srela = bfd_get_section_by_name (dynobj, ".rela.plt");
      BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);

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

      /* Get the offset into the .got table of the entry that
        corresponds to this function.  Each .got entry is 4 bytes.
        The first three are reserved.  */
      got_offset = (plt_index + 3) * 4;

      memcpy (splt->contents + h->plt.offset,
             plt_info->symbol_entry,
             plt_info->size);

      elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
                          (sgot->output_section->vma
                           + sgot->output_offset
                           + got_offset));

      bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
                splt->contents
                + h->plt.offset
                + plt_info->symbol_resolve_entry + 2);

      elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
                          splt->output_section->vma);

      /* Fill in the entry in the global offset table.  */
      bfd_put_32 (output_bfd,
                (splt->output_section->vma
                 + splt->output_offset
                 + h->plt.offset
                 + plt_info->symbol_resolve_entry),
                sgot->contents + got_offset);

      /* Fill in the entry in the .rela.plt section.  */
      rela.r_offset = (sgot->output_section->vma
                     + sgot->output_offset
                     + got_offset);
      rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
      rela.r_addend = 0;
      loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
      bfd_elf32_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.  */
         sym->st_shndx = SHN_UNDEF;
       }
    }

  if (h->got.offset != (bfd_vma) -1)
    {
      asection *sgot;
      asection *srela;
      Elf_Internal_Rela rela;
      bfd_byte *loc;

      /* This symbol has an entry in the global offset table.  Set it
        up.  */

      sgot = bfd_get_section_by_name (dynobj, ".got");
      srela = bfd_get_section_by_name (dynobj, ".rela.got");
      BFD_ASSERT (sgot != NULL && srela != NULL);

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

      /* If this is a -Bsymbolic link, and the symbol is defined
        locally, we just want to emit a RELATIVE reloc.  Likewise if
        the symbol was forced to be local because of a version file.
        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)
       {
         rela.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
         rela.r_addend = bfd_get_signed_32 (output_bfd,
                                        (sgot->contents
                                         + (h->got.offset &~ (bfd_vma) 1)));
       }
      else
       {
         bfd_put_32 (output_bfd, (bfd_vma) 0,
                    sgot->contents + (h->got.offset &~ (bfd_vma) 1));
         rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
         rela.r_addend = 0;
       }

      loc = srela->contents;
      loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
      bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
    }

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

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

      BFD_ASSERT (h->dynindx != -1
                && (h->root.type == bfd_link_hash_defined
                    || h->root.type == bfd_link_hash_defweak));

      s = bfd_get_section_by_name (h->root.u.def.section->owner,
                               ".rela.bss");
      BFD_ASSERT (s != NULL);

      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 = ELF32_R_INFO (h->dynindx, R_68K_COPY);
      rela.r_addend = 0;
      loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
      bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
    }

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

  return TRUE;
}

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static asection* elf_m68k_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 1013 of file elf32-m68k.c.

{
  if (h != NULL)
    switch (ELF32_R_TYPE (rel->r_info))
      {
      case R_68K_GNU_VTINHERIT:
      case R_68K_GNU_VTENTRY:
       return NULL;
      }

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

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static bfd_boolean elf_m68k_gc_sweep_hook ( bfd abfd,
struct bfd_link_info info,
asection sec,
const Elf_Internal_Rela relocs 
) [static]

Definition at line 1033 of file elf32-m68k.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;
  bfd *dynobj;
  asection *sgot;
  asection *srelgot;

  dynobj = elf_hash_table (info)->dynobj;
  if (dynobj == NULL)
    return TRUE;

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

  sgot = bfd_get_section_by_name (dynobj, ".got");
  srelgot = bfd_get_section_by_name (dynobj, ".rela.got");

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

      r_symndx = ELF32_R_SYM (rel->r_info);
      if (r_symndx >= symtab_hdr->sh_info)
       {
         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;
       }

      switch (ELF32_R_TYPE (rel->r_info))
       {
       case R_68K_GOT8:
       case R_68K_GOT16:
       case R_68K_GOT32:
       case R_68K_GOT8O:
       case R_68K_GOT16O:
       case R_68K_GOT32O:
         if (h != NULL)
           {
             if (h->got.refcount > 0)
              {
                --h->got.refcount;
                if (h->got.refcount == 0)
                  {
                    /* We don't need the .got entry any more.  */
                    sgot->size -= 4;
                    srelgot->size -= sizeof (Elf32_External_Rela);
                  }
              }
           }
         else if (local_got_refcounts != NULL)
           {
             if (local_got_refcounts[r_symndx] > 0)
              {
                --local_got_refcounts[r_symndx];
                if (local_got_refcounts[r_symndx] == 0)
                  {
                    /* We don't need the .got entry any more.  */
                    sgot->size -= 4;
                    if (info->shared)
                     srelgot->size -= sizeof (Elf32_External_Rela);
                  }
              }
           }
         break;

       case R_68K_PLT8:
       case R_68K_PLT16:
       case R_68K_PLT32:
       case R_68K_PLT8O:
       case R_68K_PLT16O:
       case R_68K_PLT32O:
       case R_68K_PC8:
       case R_68K_PC16:
       case R_68K_PC32:
       case R_68K_8:
       case R_68K_16:
       case R_68K_32:
         if (h != NULL)
           {
             if (h->plt.refcount > 0)
              --h->plt.refcount;
           }
         break;

       default:
         break;
       }
    }

  return TRUE;
}

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static struct elf_m68k_plt_info* elf_m68k_get_plt_info ( bfd output_bfd) [static, read]

Definition at line 1139 of file elf32-m68k.c.

{
  unsigned int features;

  features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
  if (features & cpu32)
    return &elf_cpu32_plt_info;
  if (features & mcfisa_b)
    return &elf_isab_plt_info;
  return &elf_m68k_plt_info;
}

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static void elf_m68k_install_pc32 ( asection sec,
bfd_vma  offset,
bfd_vma  value 
) [static]

Definition at line 2017 of file elf32-m68k.c.

{
  /* Make VALUE PC-relative.  */
  value -= sec->output_section->vma + offset;

  /* Apply any in-place addend.  */
  value += bfd_get_32 (sec->owner, sec->contents + offset);

  bfd_put_32 (sec->owner, value, sec->contents + offset);
}

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static struct bfd_hash_entry* elf_m68k_link_hash_newfunc ( struct bfd_hash_entry entry,
struct bfd_hash_table table,
const char *  string 
) [static, read]

Definition at line 387 of file elf32-m68k.c.

{
  struct bfd_hash_entry *ret = entry;

  /* Allocate the structure if it has not already been allocated by a
     subclass.  */
  if (ret == NULL)
    ret = bfd_hash_allocate (table,
                          sizeof (struct elf_m68k_link_hash_entry));
  if (ret == NULL)
    return ret;

  /* Call the allocation method of the superclass.  */
  ret = _bfd_elf_link_hash_newfunc (ret, table, string);
  if (ret != NULL)
    elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;

  return ret;
}

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static struct bfd_link_hash_table* elf_m68k_link_hash_table_create ( bfd abfd) [static, read]

Definition at line 413 of file elf32-m68k.c.

{
  struct elf_m68k_link_hash_table *ret;
  bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);

  ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt);
  if (ret == (struct elf_m68k_link_hash_table *) NULL)
    return NULL;

  if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
                                  elf_m68k_link_hash_newfunc,
                                  sizeof (struct elf_m68k_link_hash_entry)))
    {
      free (ret);
      return NULL;
    }

  ret->sym_sec.abfd = NULL;
  ret->plt_info = NULL;

  return &ret->root.root;
}

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static bfd_vma elf_m68k_plt_sym_val ( bfd_vma  i,
const asection plt,
const arelent *rel  ATTRIBUTE_UNUSED 
) [static]

Definition at line 2457 of file elf32-m68k.c.

{
  return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
}

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static bfd_boolean elf_m68k_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 1561 of file elf32-m68k.c.

{
  bfd *dynobj;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  bfd_vma *local_got_offsets;
  asection *sgot;
  asection *splt;
  asection *sreloc;
  Elf_Internal_Rela *rel;
  Elf_Internal_Rela *relend;

  dynobj = elf_hash_table (info)->dynobj;
  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
  sym_hashes = elf_sym_hashes (input_bfd);
  local_got_offsets = elf_local_got_offsets (input_bfd);

  sgot = NULL;
  splt = NULL;
  sreloc = NULL;

  rel = relocs;
  relend = relocs + input_section->reloc_count;
  for (; rel < relend; rel++)
    {
      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 relocation;
      bfd_boolean unresolved_reloc;
      bfd_reloc_status_type r;

      r_type = ELF32_R_TYPE (rel->r_info);
      if (r_type < 0 || r_type >= (int) R_68K_max)
       {
         bfd_set_error (bfd_error_bad_value);
         return FALSE;
       }
      howto = howto_table + r_type;

      r_symndx = ELF32_R_SYM (rel->r_info);

      h = NULL;
      sym = NULL;
      sec = NULL;
      unresolved_reloc = FALSE;

      if (r_symndx < symtab_hdr->sh_info)
       {
         sym = local_syms + r_symndx;
         sec = local_sections[r_symndx];
         relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
       }
      else
       {
         bfd_boolean warned;

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

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

      if (info->relocatable)
       continue;

      switch (r_type)
       {
       case R_68K_GOT8:
       case R_68K_GOT16:
       case R_68K_GOT32:
         /* Relocation is to the address of the entry for this symbol
            in the global offset table.  */
         if (h != NULL
             && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
           break;
         /* Fall through.  */
       case R_68K_GOT8O:
       case R_68K_GOT16O:
       case R_68K_GOT32O:
         /* Relocation is the offset of the entry for this symbol in
            the global offset table.  */

         {
           bfd_vma off;

           if (sgot == NULL)
             {
              sgot = bfd_get_section_by_name (dynobj, ".got");
              BFD_ASSERT (sgot != NULL);
             }

           if (h != NULL)
             {
              bfd_boolean dyn;

              off = h->got.offset;
              BFD_ASSERT (off != (bfd_vma) -1);

              dyn = elf_hash_table (info)->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))
                {
                  /* 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 4, we
                     use the least significant bit to record whether
                     we have initialized it already.

                     When doing a dynamic link, we create a .rela.got
                     relocation entry to initialize the value.  This
                     is done in the finish_dynamic_symbol routine.  */
                  if ((off & 1) != 0)
                    off &= ~1;
                  else
                    {
                     bfd_put_32 (output_bfd, relocation,
                                sgot->contents + off);
                     h->got.offset |= 1;
                    }
                }
              else
                unresolved_reloc = FALSE;
             }
           else
             {
              BFD_ASSERT (local_got_offsets != NULL
                         && local_got_offsets[r_symndx] != (bfd_vma) -1);

              off = local_got_offsets[r_symndx];

              /* The offset must always be a multiple of 4.  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_32 (output_bfd, relocation, sgot->contents + off);

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

                     s = bfd_get_section_by_name (dynobj, ".rela.got");
                     BFD_ASSERT (s != NULL);

                     outrel.r_offset = (sgot->output_section->vma
                                      + sgot->output_offset
                                      + off);
                     outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
                     outrel.r_addend = relocation;
                     loc = s->contents;
                     loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
                     bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
                    }

                  local_got_offsets[r_symndx] |= 1;
                }
             }

           relocation = sgot->output_offset + off;
           if (r_type == R_68K_GOT8O
              || r_type == R_68K_GOT16O
              || r_type == R_68K_GOT32O)
             {
              /* This relocation does not use the addend.  */
              rel->r_addend = 0;
             }
           else
             relocation += sgot->output_section->vma;
         }
         break;

       case R_68K_PLT8:
       case R_68K_PLT16:
       case R_68K_PLT32:
         /* Relocation is to the entry for this symbol in the
            procedure linkage table.  */

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

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

         if (splt == NULL)
           {
             splt = bfd_get_section_by_name (dynobj, ".plt");
             BFD_ASSERT (splt != NULL);
           }

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

       case R_68K_PLT8O:
       case R_68K_PLT16O:
       case R_68K_PLT32O:
         /* Relocation is the offset of the entry for this symbol in
            the procedure linkage table.  */
         BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);

         if (splt == NULL)
           {
             splt = bfd_get_section_by_name (dynobj, ".plt");
             BFD_ASSERT (splt != NULL);
           }

         relocation = h->plt.offset;
         unresolved_reloc = FALSE;

         /* This relocation does not use the addend.  */
         rel->r_addend = 0;

         break;

       case R_68K_PC8:
       case R_68K_PC16:
       case R_68K_PC32:
         if (h == NULL
             || (info->shared
                && h->forced_local))
           break;
         /* Fall through.  */
       case R_68K_8:
       case R_68K_16:
       case R_68K_32:
         if (info->shared
             && r_symndx != 0
             && (input_section->flags & SEC_ALLOC) != 0
             && (h == NULL
                || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
                || h->root.type != bfd_link_hash_undefweak)
             && ((r_type != R_68K_PC8
                 && r_type != R_68K_PC16
                 && r_type != R_68K_PC32)
                || (h != NULL
                    && h->dynindx != -1
                    && (!info->symbolic
                       || !h->def_regular))))
           {
             Elf_Internal_Rela outrel;
             bfd_byte *loc;
             bfd_boolean skip, relocate;

             /* 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_68K_PC8
                        || r_type == R_68K_PC16
                        || r_type == R_68K_PC32
                        || !info->shared
                        || !info->symbolic
                        || !h->def_regular))
              {
                outrel.r_info = ELF32_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_68K_32)
                  {
                    relocate = TRUE;
                    outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
                  }
                else
                  {
                    long indx;

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

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

                    outrel.r_info = ELF32_R_INFO (indx, r_type);
                  }
              }

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

             loc = sreloc->contents;
             loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
             bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);

             /* This reloc will be computed at runtime, so there's no
                 need to do anything now, except for R_68K_32
                 relocations that have been turned into
                 R_68K_RELATIVE.  */
             if (!relocate)
              continue;
           }

         break;

       case R_68K_GNU_VTINHERIT:
       case R_68K_GNU_VTENTRY:
         /* These are no-ops in the end.  */
         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);
         return FALSE;
       }

      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 1348 of file elf32-m68k.c.

{
  bfd *dynobj;
  asection *s;
  bfd_boolean plt;
  bfd_boolean relocs;

  dynobj = elf_hash_table (info)->dynobj;
  BFD_ASSERT (dynobj != NULL);

  if (elf_hash_table (info)->dynamic_sections_created)
    {
      /* Set the contents of the .interp section to the interpreter.  */
      if (info->executable)
       {
         s = bfd_get_section_by_name (dynobj, ".interp");
         BFD_ASSERT (s != NULL);
         s->size = sizeof ELF_DYNAMIC_INTERPRETER;
         s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
       }
    }
  else
    {
      /* We may have created entries in the .rela.got section.
        However, if we are not creating the dynamic sections, we will
        not actually use these entries.  Reset the size of .rela.got,
        which will cause it to get stripped from the output file
        below.  */
      s = bfd_get_section_by_name (dynobj, ".rela.got");
      if (s != NULL)
       s->size = 0;
    }

  /* If this is a -Bsymbolic shared link, then we need to discard all
     PC relative relocs against symbols defined in a regular object.
     For the normal shared case we discard the PC relative relocs
     against symbols that have become local due to visibility changes.
     We allocated space for them in the check_relocs routine, but we
     will not fill them in in the relocate_section routine.  */
  if (info->shared)
    elf_link_hash_traverse (elf_hash_table (info),
                         elf_m68k_discard_copies,
                         (PTR) info);

  /* The check_relocs and adjust_dynamic_symbol entry points have
     determined the sizes of the various dynamic sections.  Allocate
     memory for them.  */
  plt = FALSE;
  relocs = FALSE;
  for (s = dynobj->sections; s != NULL; s = s->next)
    {
      const char *name;

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

      /* It's OK to base decisions on the section name, because none
        of the dynobj section names depend upon the input files.  */
      name = bfd_get_section_name (dynobj, s);

      if (strcmp (name, ".plt") == 0)
       {
         /* Remember whether there is a PLT.  */
         plt = s->size != 0;
       }
      else if (CONST_STRNEQ (name, ".rela"))
       {
         if (s->size != 0)
           {
             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 if (! CONST_STRNEQ (name, ".got")
              && strcmp (name, ".dynbss") != 0)
       {
         /* It's not one of our sections, so don't allocate space.  */
         continue;
       }

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

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

      /* Allocate memory for the section contents.  */
      /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
        Unused entries should be reclaimed before the section's contents
        are written out, but at the moment this does not happen.  Thus in
        order to prevent writing out garbage, we initialise the section's
        contents to zero.  */
      s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
      if (s->contents == NULL)
       return FALSE;
    }

  if (elf_hash_table (info)->dynamic_sections_created)
    {
      /* Add some entries to the .dynamic section.  We fill in the
        values later, in elf_m68k_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->shared)
       {
         if (!add_dynamic_entry (DT_DEBUG, 0))
           return FALSE;
       }

      if (plt)
       {
         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 (Elf32_External_Rela)))
           return FALSE;
       }

      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 reloc_howto_type* reloc_type_lookup PARAMS ( (bfd *, bfd_reloc_code_real_type ) [static]
static void rtype_to_howto PARAMS ( (bfd *, arelent *, Elf_Internal_Rela *)  ) [static]
static bfd_boolean elf_m68k_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 reloc_howto_type* reloc_name_lookup ( bfd *abfd  ATTRIBUTE_UNUSED,
const char *  r_name 
) [static]

Definition at line 178 of file elf32-m68k.c.

{
  unsigned int i;

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

  return NULL;
}

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static reloc_howto_type* reloc_type_lookup ( abfd  ,
bfd_reloc_code_real_type  code 
) [static]

Definition at line 164 of file elf32-m68k.c.

{
  unsigned int i;
  for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
    {
      if (reloc_map[i].bfd_val == code)
       return &howto_table[reloc_map[i].elf_val];
    }
  return 0;
}

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

Definition at line 119 of file elf32-m68k.c.

{
  BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K_max);
  cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)];
}

Variable Documentation

Initial value:
{
  0x2f, 0x3b, 0x01, 0x70, 
  0, 0, 0, 2,             
  0x22, 0x7b, 0x01, 0x70, 
  0, 0, 0, 2,             
  0x4e, 0xd1,             
  0, 0, 0, 0,             
  0, 0
}

Definition at line 305 of file elf32-m68k.c.

Initial value:
{
  0x22, 0x7b, 0x01, 0x70,  
  0, 0, 0, 2,              
  0x4e, 0xd1,              
  0x2f, 0x3c,              
  0, 0, 0, 0,              
  0x60, 0xff,              
  0, 0, 0, 0,              
  0, 0
}

Definition at line 316 of file elf32-m68k.c.

Initial value:
{
  0x20, 0x3c,             
  0, 0, 0, 0,             
  0x2f, 0x3b, 0x08, 0xfa, 
  0x20, 0x3c,             
  0, 0, 0, 0,             
  0x20, 0x7b, 0x08, 0xfa, 
  0x4e, 0xd0,             
  0x4e, 0x71           
}

Definition at line 271 of file elf32-m68k.c.

Initial value:
{
  0x20, 0x3c,             
  0, 0, 0, 0,             
  0x20, 0x7b, 0x08, 0xfa, 
  0x4e, 0xd0,             
  0x2f, 0x3c,             
  0, 0, 0, 0,             
  0x60, 0xff,             
  0, 0, 0, 0              
}

Definition at line 285 of file elf32-m68k.c.

Initial value:
{
  0x2f, 0x3b, 0x01, 0x70, 
  0, 0, 0, 2,          
  0x4e, 0xfb, 0x01, 0x71, 
  0, 0, 0, 2,          
  0, 0, 0, 0           
}

Definition at line 242 of file elf32-m68k.c.

Initial value:
{
  0x4e, 0xfb, 0x01, 0x71, 
  0, 0, 0, 2,          
  0x2f, 0x3c,          
  0, 0, 0, 0,          
  0x60, 0xff,          
  0, 0, 0, 0           
}

Definition at line 253 of file elf32-m68k.c.

static struct elf_m68k_plt_info [static]
Initial value:
 {
  PLT_ENTRY_SIZE,
  elf_m68k_plt0_entry, { 4, 12 },
  elf_m68k_plt_entry, { 4, 16 }, 8
}

Definition at line 263 of file elf32-m68k.c.

reloc_howto_type howto_table[] [static]

Definition at line 64 of file elf32-m68k.c.

struct { ... } reloc_map[] [static]