2009-12-28 Daniel Gutson <dgutson@codesourcery.com>

[pf3gnuchains/pf3gnuchains3x.git] / bfd / elf-bfd.h

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index effa344..daa2b62 100644 (file)
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1,6 +1,7 @@
 /* BFD back-end data structures for ELF files.
    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
 /* BFD back-end data structures for ELF files.
    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,

-   2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Free Software Foundation, Inc.

    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.
    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.


@@ -30,8 +31,11 @@
 
 /* The number of entries in a section is its size divided by the size
    of a single entry.  This is normally only applicable to reloc and
 
 /* The number of entries in a section is its size divided by the size
    of a single entry.  This is normally only applicable to reloc and

-   symbol table sections.  */
-#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
+   symbol table sections.
+   PR 9934: It is possible to have relocations that do not refer to
+   symbols, thus it is also possible to have a relocation section in
+   an object file, but no symbol table.  */
+#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0)

 
 /* If size isn't specified as 64 or 32, NAME macro should fail.  */
 #ifndef NAME
 
 /* If size isn't specified as 64 or 32, NAME macro should fail.  */
 #ifndef NAME


@@ -81,6 +85,27 @@ struct elf_strtab_hash;
 struct got_entry;
 struct plt_entry;
 
 struct got_entry;
 struct plt_entry;
 

+union gotplt_union
+  {
+    bfd_signed_vma refcount;
+    bfd_vma offset;
+    struct got_entry *glist;
+    struct plt_entry *plist;
+  };
+
+struct elf_link_virtual_table_entry
+  {
+    /* Virtual table entry use information.  This array is nominally of size
+       size/sizeof(target_void_pointer), though we have to be able to assume
+       and track a size while the symbol is still undefined.  It is indexed
+       via offset/sizeof(target_void_pointer).  */
+    size_t size;
+    bfd_boolean *used;
+
+    /* Virtual table derivation info.  */
+    struct elf_link_hash_entry *parent;
+  };
+

 /* ELF linker hash table entries.  */
 
 struct elf_link_hash_entry
 /* ELF linker hash table entries.  */
 
 struct elf_link_hash_entry


@@ -114,13 +139,7 @@ struct elf_link_hash_entry
      require a global offset table entry.  The second scheme allows
      multiple GOT entries per symbol, managed via a linked list
      pointed to by GLIST.  */
      require a global offset table entry.  The second scheme allows
      multiple GOT entries per symbol, managed via a linked list
      pointed to by GLIST.  */

-  union gotplt_union
-    {
-      bfd_signed_vma refcount;
-      bfd_vma offset;
-      struct got_entry *glist;
-      struct plt_entry *plist;
-    } got;
+  union gotplt_union got;

 
   /* Same, but tracks a procedure linkage table entry.  */
   union gotplt_union plt;
 
   /* Same, but tracks a procedure linkage table entry.  */
   union gotplt_union plt;


@@ -134,7 +153,8 @@ struct elf_link_hash_entry
   /* Symbol st_other value, symbol visibility.  */
   unsigned int other : 8;
 
   /* Symbol st_other value, symbol visibility.  */
   unsigned int other : 8;
 

-  /* Symbol is referenced by a non-shared object.  */
+  /* Symbol is referenced by a non-shared object (other than the object
+     in which it is defined).  */

   unsigned int ref_regular : 1;
   /* Symbol is defined by a non-shared object.  */
   unsigned int def_regular : 1;
   unsigned int ref_regular : 1;
   /* Symbol is defined by a non-shared object.  */
   unsigned int def_regular : 1;


@@ -142,7 +162,8 @@ struct elf_link_hash_entry
   unsigned int ref_dynamic : 1;
   /* Symbol is defined by a shared object.  */
   unsigned int def_dynamic : 1;
   unsigned int ref_dynamic : 1;
   /* Symbol is defined by a shared object.  */
   unsigned int def_dynamic : 1;

-  /* Symbol has a non-weak reference from a non-shared object.  */
+  /* Symbol has a non-weak reference from a non-shared object (other than
+     the object in which it is defined).  */

   unsigned int ref_regular_nonweak : 1;
   /* Dynamic symbol has been adjustd.  */
   unsigned int dynamic_adjusted : 1;
   unsigned int ref_regular_nonweak : 1;
   /* Dynamic symbol has been adjustd.  */
   unsigned int dynamic_adjusted : 1;


@@ -172,6 +193,8 @@ struct elf_link_hash_entry
   /* Symbol is referenced with a relocation where C/C++ pointer equality
      matters.  */
   unsigned int pointer_equality_needed : 1;
   /* Symbol is referenced with a relocation where C/C++ pointer equality
      matters.  */
   unsigned int pointer_equality_needed : 1;

+  /* Symbol is a unique global symbol.  */
+  unsigned int unique_global : 1;

 
   /* String table index in .dynstr if this is a dynamic symbol.  */
   unsigned long dynstr_index;
 
   /* String table index in .dynstr if this is a dynamic symbol.  */
   unsigned long dynstr_index;


@@ -202,18 +225,7 @@ struct elf_link_hash_entry
     struct bfd_elf_version_tree *vertree;
   } verinfo;
 
     struct bfd_elf_version_tree *vertree;
   } verinfo;
 

-  struct
-  {
-    /* Virtual table entry use information.  This array is nominally of size
-       size/sizeof(target_void_pointer), though we have to be able to assume
-       and track a size while the symbol is still undefined.  It is indexed
-       via offset/sizeof(target_void_pointer).  */
-    size_t size;
-    bfd_boolean *used;
-
-    /* Virtual table derivation info.  */
-    struct elf_link_hash_entry *parent;
-  } *vtable;
+  struct elf_link_virtual_table_entry *vtable;

 };
 
 /* Will references to this symbol always reference the symbol
 };
 
 /* Will references to this symbol always reference the symbol


@@ -293,6 +305,10 @@ struct eh_cie_fde
        asection *sec;
       } u;
 
        asection *sec;
       } u;
 

+      /* The offset of the personality data from the start of the CIE,
+        or 0 if the CIE doesn't have any.  */
+      unsigned int personality_offset : 8;
+

       /* True if we have marked relocations associated with this CIE.  */
       unsigned int gc_mark : 1;
 
       /* True if we have marked relocations associated with this CIE.  */
       unsigned int gc_mark : 1;
 


@@ -300,8 +316,13 @@ struct eh_cie_fde
         a PC-relative one.  */
       unsigned int make_lsda_relative : 1;
 
         a PC-relative one.  */
       unsigned int make_lsda_relative : 1;
 

-      /* True if the CIE contains personality data and if that data
-        uses a PC-relative encoding.  */
+      /* True if we have decided to turn an absolute personality
+        encoding into a PC-relative one.  */
+      unsigned int make_per_encoding_relative : 1;
+
+      /* True if the CIE contains personality data and if that
+        data uses a PC-relative encoding.  Always true when
+        make_per_encoding_relative is.  */

       unsigned int per_encoding_relative : 1;
 
       /* True if we need to add an 'R' (FDE encoding) entry to the
       unsigned int per_encoding_relative : 1;
 
       /* True if we need to add an 'R' (FDE encoding) entry to the


@@ -310,6 +331,9 @@ struct eh_cie_fde
 
       /* True if we have merged this CIE with another.  */
       unsigned int merged : 1;
 
       /* True if we have merged this CIE with another.  */
       unsigned int merged : 1;

+
+      /* Unused bits.  */
+      unsigned int pad1 : 18;

     } cie;
   } u;
   unsigned int reloc_index;
     } cie;
   } u;
   unsigned int reloc_index;


@@ -453,6 +477,17 @@ struct elf_link_hash_table
 
   /* A linked list of BFD's loaded in the link.  */
   struct elf_link_loaded_list *loaded;
 
   /* A linked list of BFD's loaded in the link.  */
   struct elf_link_loaded_list *loaded;

+
+  /* Short-cuts to get to dynamic linker sections.  */
+  asection *sgot;
+  asection *sgotplt;
+  asection *srelgot;
+  asection *splt;
+  asection *srelplt;
+  asection *igotplt;
+  asection *iplt;
+  asection *irelplt;
+  asection *irelifunc;

 };
 
 /* Look up an entry in an ELF linker hash table.  */
 };
 
 /* Look up an entry in an ELF linker hash table.  */


@@ -478,14 +513,14 @@ struct elf_link_hash_table
 #define is_elf_hash_table(htab)                                                \
   (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
 
 #define is_elf_hash_table(htab)                                                \
   (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
 

-/* Used by bfd_section_from_r_symndx to cache a small number of local
-   symbol to section mappings.  */
+/* Used by bfd_sym_from_r_symndx to cache a small number of local
+   symbols.  */

 #define LOCAL_SYM_CACHE_SIZE 32
 #define LOCAL_SYM_CACHE_SIZE 32

-struct sym_sec_cache
+struct sym_cache

 {
   bfd *abfd;
   unsigned long indx[LOCAL_SYM_CACHE_SIZE];
 {
   bfd *abfd;
   unsigned long indx[LOCAL_SYM_CACHE_SIZE];

-  unsigned int shndx[LOCAL_SYM_CACHE_SIZE];
+  Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE];

 };
 \f
 /* Constant information held for an ELF backend.  */
 };
 \f
 /* Constant information held for an ELF backend.  */


@@ -594,7 +629,7 @@ struct bfd_elf_special_section
      PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX.  */
   int suffix_length;
   int type;
      PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX.  */
   int suffix_length;
   int type;

-  int attr;
+  bfd_vma attr;

 };
 
 enum action_discarded
 };
 
 enum action_discarded


@@ -741,8 +776,10 @@ struct elf_backend_data
      const char **name, flagword *flags, asection **sec, bfd_vma *value);
 
   /* If this field is not NULL, it is called by the elf_link_output_sym
      const char **name, flagword *flags, asection **sec, bfd_vma *value);
 
   /* If this field is not NULL, it is called by the elf_link_output_sym

-     phase of a link for each symbol which will appear in the object file.  */
-  bfd_boolean (*elf_backend_link_output_symbol_hook)
+     phase of a link for each symbol which will appear in the object file.
+     On error, this function returns 0.  1 is returned when the symbol
+     should be output, 2 is returned when the symbol should be discarded.  */
+  int (*elf_backend_link_output_symbol_hook)

     (struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
      asection *, struct elf_link_hash_entry *);
 
     (struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
      asection *, struct elf_link_hash_entry *);
 


@@ -1166,6 +1203,12 @@ struct elf_backend_data
   /* The section type to use for an attributes section.  */
   unsigned int obj_attrs_section_type;
 
   /* The section type to use for an attributes section.  */
   unsigned int obj_attrs_section_type;
 

+  /* This function determines the order in which any attributes are written.
+     It must be defined for input in the range 4..NUM_KNOWN_OBJ_ATTRIBUTES-1
+     (this range is used in order to make unity easy).  The returned value is
+     the actual tag number to place in the input position.  */
+  int (*obj_attrs_order) (int);
+

   /* This is TRUE if the linker should act like collect and gather
      global constructors and destructors by name.  This is TRUE for
      MIPS ELF because the Irix 5 tools can not handle the .init
   /* This is TRUE if the linker should act like collect and gather
      global constructors and destructors by name.  This is TRUE for
      MIPS ELF because the Irix 5 tools can not handle the .init


@@ -1287,9 +1330,6 @@ struct bfd_elf_section_data
   /* A pointer to the bfd section used for dynamic relocs.  */
   asection *sreloc;
 
   /* A pointer to the bfd section used for dynamic relocs.  */
   asection *sreloc;
 

-  /* A pointer to the bfd section used for dynamic relocs against ifunc symbols.  */
-  asection *indirect_relocs;
-

   union {
     /* Group name, if this section is a member of a group.  */
     const char *name;
   union {
     /* Group name, if this section is a member of a group.  */
     const char *name;


@@ -1330,55 +1370,23 @@ struct bfd_elf_section_data
 #define get_elf_backend_data(abfd) \
    xvec_get_elf_backend_data ((abfd)->xvec)
 
 #define get_elf_backend_data(abfd) \
    xvec_get_elf_backend_data ((abfd)->xvec)
 

-/* This struct is used to pass information to routines called via
-   elf_link_hash_traverse which must return failure.  */
-
-struct elf_info_failed
-{
-  bfd_boolean failed;
-  struct bfd_link_info *info;
-  struct bfd_elf_version_tree *verdefs;
-};
-
-/* This structure is used to pass information to
-   _bfd_elf_link_assign_sym_version.  */
-
-struct elf_assign_sym_version_info
-{
-  /* Output BFD.  */
-  bfd *output_bfd;
-  /* General link information.  */
-  struct bfd_link_info *info;
-  /* Version tree.  */
-  struct bfd_elf_version_tree *verdefs;
-  /* Whether we had a failure.  */
-  bfd_boolean failed;
-};
-
-/* This structure is used to pass information to
-   _bfd_elf_link_find_version_dependencies.  */
-
-struct elf_find_verdep_info
-{
-  /* Output BFD.  */
-  bfd *output_bfd;
-  /* General link information.  */
-  struct bfd_link_info *info;
-  /* The number of dependencies.  */
-  unsigned int vers;
-  /* Whether we had a failure.  */
-  bfd_boolean failed;
-};
-

 /* The maximum number of known object attributes for any target.  */
 /* The maximum number of known object attributes for any target.  */

-#define NUM_KNOWN_OBJ_ATTRIBUTES 32
+#define NUM_KNOWN_OBJ_ATTRIBUTES 71

 
 

-/* The value of an object attribute.  type & 1 indicates whether there
-   is an integer value; type & 2 indicates whether there is a string
-   value.  */
+/* The value of an object attribute.  The type indicates whether the attribute
+   holds and integer, a string, or both.  It can also indicate that there can
+   be no default (i.e. all values must be written to file, even zero).  */

 
 typedef struct obj_attribute
 {
 
 typedef struct obj_attribute
 {

+#define ATTR_TYPE_FLAG_INT_VAL    (1 << 0)
+#define ATTR_TYPE_FLAG_STR_VAL    (1 << 1)
+#define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2)
+
+#define ATTR_TYPE_HAS_INT_VAL(TYPE)    ((TYPE) & ATTR_TYPE_FLAG_INT_VAL)
+#define ATTR_TYPE_HAS_STR_VAL(TYPE)    ((TYPE) & ATTR_TYPE_FLAG_STR_VAL)
+#define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT)
+

   int type;
   unsigned int i;
   char *s;
   int type;
   unsigned int i;
   char *s;


@@ -1495,6 +1503,10 @@ struct elf_obj_tdata
      one.  */
   const char *dt_name;
 
      one.  */
   const char *dt_name;
 

+  /* The linker emulation needs to know what audit libs
+     are used by a dynamic object.  */ 
+  const char *dt_audit;
+

   /* Records the result of `get_program_header_size'.  */
   bfd_size_type program_header_size;
 
   /* Records the result of `get_program_header_size'.  */
   bfd_size_type program_header_size;
 


@@ -1584,6 +1596,11 @@ struct elf_obj_tdata
   bfd_size_type build_id_size;
   bfd_byte *build_id;
 
   bfd_size_type build_id_size;
   bfd_byte *build_id;
 

+  /* True if the bfd contains symbols that have the STT_GNU_IFUNC
+     symbol type.  Used to set the osabi field in the ELF header
+     structure.  */
+  bfd_boolean has_ifunc_symbols;
+

   /* An identifier used to distinguish different target
      specific extensions to this structure.  */
   enum elf_object_id object_id;
   /* An identifier used to distinguish different target
      specific extensions to this structure.  */
   enum elf_object_id object_id;


@@ -1619,6 +1636,7 @@ struct elf_obj_tdata
 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
 #define elf_dt_name(bfd)       (elf_tdata(bfd) -> dt_name)
 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
 #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
 #define elf_dt_name(bfd)       (elf_tdata(bfd) -> dt_name)

+#define elf_dt_audit(bfd)      (elf_tdata(bfd) -> dt_audit)

 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
 #define elf_bad_symtab(bfd)    (elf_tdata(bfd) -> bad_symtab)
 #define elf_flags_init(bfd)    (elf_tdata(bfd) -> flags_init)
 #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
 #define elf_bad_symtab(bfd)    (elf_tdata(bfd) -> bad_symtab)
 #define elf_flags_init(bfd)    (elf_tdata(bfd) -> flags_init)


@@ -1654,8 +1672,6 @@ extern unsigned int _bfd_elf_section_from_bfd_section
   (bfd *, asection *);
 extern char *bfd_elf_string_from_elf_section
   (bfd *, unsigned, unsigned);
   (bfd *, asection *);
 extern char *bfd_elf_string_from_elf_section
   (bfd *, unsigned, unsigned);

-extern char *bfd_elf_get_str_section
-  (bfd *, unsigned);

 extern Elf_Internal_Sym *bfd_elf_get_elf_syms
   (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
    Elf_External_Sym_Shndx *);
 extern Elf_Internal_Sym *bfd_elf_get_elf_syms
   (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
    Elf_External_Sym_Shndx *);


@@ -1699,8 +1715,6 @@ extern bfd_boolean bfd_elf_make_generic_object
   (bfd *);
 extern bfd_boolean bfd_elf_mkcorefile
   (bfd *);
   (bfd *);
 extern bfd_boolean bfd_elf_mkcorefile
   (bfd *);

-extern Elf_Internal_Shdr *bfd_elf_find_section
-  (bfd *, char *);

 extern bfd_boolean _bfd_elf_make_section_from_shdr
   (bfd *, Elf_Internal_Shdr *, const char *, int);
 extern bfd_boolean _bfd_elf_make_section_from_phdr
 extern bfd_boolean _bfd_elf_make_section_from_shdr
   (bfd *, Elf_Internal_Shdr *, const char *, int);
 extern bfd_boolean _bfd_elf_make_section_from_phdr


@@ -1737,6 +1751,8 @@ extern asection *_bfd_elf_check_kept_section
   (asection *, struct bfd_link_info *);
 extern void _bfd_elf_link_just_syms
   (asection *, struct bfd_link_info *);
   (asection *, struct bfd_link_info *);
 extern void _bfd_elf_link_just_syms
   (asection *, struct bfd_link_info *);

+extern void _bfd_elf_copy_link_hash_symbol_type
+  (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *);

 extern bfd_boolean _bfd_elf_copy_private_header_data
   (bfd *, bfd *);
 extern bfd_boolean _bfd_elf_copy_private_symbol_data
 extern bfd_boolean _bfd_elf_copy_private_header_data
   (bfd *, bfd *);
 extern bfd_boolean _bfd_elf_copy_private_symbol_data


@@ -1771,8 +1787,6 @@ extern asection * _bfd_elf_get_dynamic_reloc_section
   (bfd *, asection *, bfd_boolean);
 extern asection * _bfd_elf_make_dynamic_reloc_section
   (asection *, bfd *, unsigned int, bfd *, bfd_boolean);
   (bfd *, asection *, bfd_boolean);
 extern asection * _bfd_elf_make_dynamic_reloc_section
   (asection *, bfd *, unsigned int, bfd *, bfd_boolean);

-extern asection * _bfd_elf_make_ifunc_reloc_section
-  (bfd *, asection *, bfd *, unsigned int);

 extern long _bfd_elf_get_dynamic_reloc_upper_bound
   (bfd *);
 extern long _bfd_elf_canonicalize_dynamic_reloc
 extern long _bfd_elf_get_dynamic_reloc_upper_bound
   (bfd *);
 extern long _bfd_elf_canonicalize_dynamic_reloc


@@ -1820,8 +1834,8 @@ extern bfd_boolean bfd_section_from_phdr
 extern int _bfd_elf_symbol_from_bfd_symbol
   (bfd *, asymbol **);
 
 extern int _bfd_elf_symbol_from_bfd_symbol
   (bfd *, asymbol **);
 

-extern asection *bfd_section_from_r_symndx
-  (bfd *, struct sym_sec_cache *, asection *, unsigned long);
+extern Elf_Internal_Sym *bfd_sym_from_r_symndx 
+  (struct sym_cache *, bfd *, unsigned long);

 extern asection *bfd_section_from_elf_index
   (bfd *, unsigned int);
 extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
 extern asection *bfd_section_from_elf_index
   (bfd *, unsigned int);
 extern struct bfd_strtab_hash *_bfd_elf_stringtab_init


@@ -1877,20 +1891,6 @@ extern bfd_boolean _bfd_elf_merge_symbol
 
 extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *);
 
 
 extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *);
 

-extern bfd_boolean _bfd_elf_add_default_symbol
-  (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
-   const char *, Elf_Internal_Sym *, asection **, bfd_vma *,
-   bfd_boolean *, bfd_boolean);
-
-extern bfd_boolean _bfd_elf_export_symbol
-  (struct elf_link_hash_entry *, void *);
-
-extern bfd_boolean _bfd_elf_link_find_version_dependencies
-  (struct elf_link_hash_entry *, void *);
-
-extern bfd_boolean _bfd_elf_link_assign_sym_version
-  (struct elf_link_hash_entry *, void *);
-

 extern long _bfd_elf_link_lookup_local_dynindx
   (struct bfd_link_info *, bfd *, long);
 extern bfd_boolean _bfd_elf_compute_section_file_positions
 extern long _bfd_elf_link_lookup_local_dynindx
   (struct bfd_link_info *, bfd *, long);
 extern bfd_boolean _bfd_elf_compute_section_file_positions


@@ -1926,25 +1926,13 @@ extern char *_bfd_elfcore_strndup
 extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
   (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
 
 extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
   (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
 

-extern bfd_boolean _bfd_elf_link_size_reloc_section
-  (bfd *, Elf_Internal_Shdr *, asection *);
-

 extern bfd_boolean _bfd_elf_link_output_relocs
   (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
    struct elf_link_hash_entry **);
 
 extern bfd_boolean _bfd_elf_link_output_relocs
   (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
    struct elf_link_hash_entry **);
 

-extern bfd_boolean _bfd_elf_fix_symbol_flags
-  (struct elf_link_hash_entry *, struct elf_info_failed *);
-
-extern bfd_boolean _bfd_elf_adjust_dynamic_symbol
-  (struct elf_link_hash_entry *, void *);
-

 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
   (struct elf_link_hash_entry *, asection *);
 
 extern bfd_boolean _bfd_elf_adjust_dynamic_copy
   (struct elf_link_hash_entry *, asection *);
 

-extern bfd_boolean _bfd_elf_link_sec_merge_syms
-  (struct elf_link_hash_entry *, void *);
-

 extern bfd_boolean _bfd_elf_dynamic_symbol_p
   (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
 
 extern bfd_boolean _bfd_elf_dynamic_symbol_p
   (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
 


@@ -2066,10 +2054,6 @@ extern bfd_boolean bfd_elf_link_record_dynamic_symbol
 extern int bfd_elf_link_record_local_dynamic_symbol
   (struct bfd_link_info *, bfd *, long);
 
 extern int bfd_elf_link_record_local_dynamic_symbol
   (struct bfd_link_info *, bfd *, long);
 

-extern void bfd_elf_link_mark_dynamic_symbol
-  (struct bfd_link_info *, struct elf_link_hash_entry *,
-   Elf_Internal_Sym *);
-

 extern bfd_boolean _bfd_elf_close_and_cleanup
   (bfd *);
 
 extern bfd_boolean _bfd_elf_close_and_cleanup
   (bfd *);
 


@@ -2147,6 +2131,8 @@ extern bfd_boolean _bfd_elf_map_sections_to_segments
 
 extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
 
 
 extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
 

+extern int bfd_elf_get_default_section_type (flagword);
+

 extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section
   (bfd * abfd, asection * section);
 
 extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section
   (bfd * abfd, asection * section);
 


@@ -2188,10 +2174,11 @@ extern void bfd_elf_add_obj_attr_int (bfd *, int, int, unsigned int);
 extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
   bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
 extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
 #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \
   bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))

-extern void bfd_elf_add_obj_attr_compat (bfd *, int, unsigned int,
-                                        const char *);
-#define bfd_elf_add_proc_attr_compat(BFD, INTVAL, STRVAL) \
-  bfd_elf_add_obj_attr_compat ((BFD), OBJ_ATTR_PROC, (INTVAL), (STRVAL))
+extern void bfd_elf_add_obj_attr_int_string (bfd *, int, int, unsigned int,
+                                            const char *);
+#define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \
+  bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \
+                                  (INTVAL), (STRVAL))

 
 extern char *_bfd_elf_attr_strdup (bfd *, const char *);
 extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *);
 
 extern char *_bfd_elf_attr_strdup (bfd *, const char *);
 extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *);


@@ -2199,13 +2186,43 @@ extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, int);
 extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
 extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
 
 extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
 extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
 

+/* The linker may needs to keep track of the number of relocs that it
+   decides to copy as dynamic relocs in check_relocs for each symbol.
+   This is so that it can later discard them if they are found to be
+   unnecessary.  We can store the information in a field extending the
+   regular ELF linker hash table.  */
+
+struct elf_dyn_relocs
+{
+  struct elf_dyn_relocs *next;
+
+  /* The input section of the reloc.  */
+  asection *sec;
+
+  /* Total number of relocs copied for the input section.  */
+  bfd_size_type count;
+
+  /* Number of pc-relative relocs copied for the input section.  */
+  bfd_size_type pc_count;
+};
+
+extern bfd_boolean _bfd_elf_create_ifunc_sections
+  (bfd *, struct bfd_link_info *);
+extern asection * _bfd_elf_create_ifunc_dyn_reloc
+  (bfd *, struct bfd_link_info *, asection *sec, asection *sreloc,
+   struct elf_dyn_relocs **);
+extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
+  (struct bfd_link_info *, struct elf_link_hash_entry *,
+   struct elf_dyn_relocs **, unsigned int, unsigned int);
+

 /* Large common section.  */
 extern asection _bfd_elf_large_com_section;
 
 /* Large common section.  */
 extern asection _bfd_elf_large_com_section;
 

-/* SH ELF specific routine.  */
-
-extern bfd_boolean _sh_elf_set_mach_from_flags
-  (bfd *);
+/* Hash for local symbol with the first section id, ID, in the input
+   file and the local symbol index, SYM.  */
+#define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \
+  (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \
+   ^ (SYM) ^ ((ID) >> 16))

 
 /* This is the condition under which finish_dynamic_symbol will be called.
    If our finish_dynamic_symbol isn't called, we'll need to do something
 
 /* This is the condition under which finish_dynamic_symbol will be called.
    If our finish_dynamic_symbol isn't called, we'll need to do something