PRU BFD support

[deliverable/binutils-gdb.git] / bfd / elf-bfd.h

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 13c32e097a386cbc873eb8766c688ea3eb4263d4..3dcc245e8525993e782a1dcff0ac703225175089 100644 (file)
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1,5 +1,5 @@
 /* BFD back-end data structures for ELF files.
 /* BFD back-end data structures for ELF files.

-   Copyright (C) 1992-2015 Free Software Foundation, Inc.
+   Copyright (C) 1992-2016 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.


@@ -108,6 +108,15 @@ struct elf_link_virtual_table_entry
     struct elf_link_hash_entry *parent;
   };
 
     struct elf_link_hash_entry *parent;
   };
 

+/* ELF symbol version.  */
+enum elf_symbol_version
+  {
+    unknown = 0,
+    unversioned,
+    versioned,
+    versioned_hidden
+  };
+

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


@@ -115,7 +124,8 @@ struct elf_link_hash_entry
   struct bfd_link_hash_entry root;
 
   /* Symbol index in output file.  This is initialized to -1.  It is
   struct bfd_link_hash_entry root;
 
   /* Symbol index in output file.  This is initialized to -1.  It is

-     set to -2 if the symbol is used by a reloc.  */
+     set to -2 if the symbol is used by a reloc.  It is set to -3 if
+     this symbol is defined in a discarded section.  */

   long indx;
 
   /* Symbol index as a dynamic symbol.  Initialized to -1, and remains
   long indx;
 
   /* Symbol index as a dynamic symbol.  Initialized to -1, and remains


@@ -178,8 +188,8 @@ struct elf_link_hash_entry
   unsigned int needs_plt : 1;
   /* Symbol appears in a non-ELF input file.  */
   unsigned int non_elf : 1;
   unsigned int needs_plt : 1;
   /* Symbol appears in a non-ELF input file.  */
   unsigned int non_elf : 1;

-  /* Symbol should be marked as hidden in the version information.  */
-  unsigned int hidden : 1;
+  /* Symbol version information.  */
+  ENUM_BITFIELD (elf_symbol_version) versioned : 2;

   /* Symbol was forced to local scope due to a version script file.  */
   unsigned int forced_local : 1;
   /* Symbol was forced to be dynamic due to a version script file.  */
   /* Symbol was forced to local scope due to a version script file.  */
   unsigned int forced_local : 1;
   /* Symbol was forced to be dynamic due to a version script file.  */


@@ -200,7 +210,8 @@ struct elf_link_hash_entry
   unsigned int pointer_equality_needed : 1;
   /* Symbol is a unique global symbol.  */
   unsigned int unique_global : 1;
   unsigned int pointer_equality_needed : 1;
   /* Symbol is a unique global symbol.  */
   unsigned int unique_global : 1;

-  /* Symbol is defined with non-default visibility.  */
+  /* Symbol is defined by a shared library with non-default visibility
+     in a read/write section.  */

   unsigned int protected_def : 1;
 
   /* String table index in .dynstr if this is a dynamic symbol.  */
   unsigned int protected_def : 1;
 
   /* String table index in .dynstr if this is a dynamic symbol.  */


@@ -387,16 +398,41 @@ struct eh_frame_array_ent
 
 struct htab;
 
 
 struct htab;
 

-struct eh_frame_hdr_info
+#define DWARF2_EH_HDR 1
+#define COMPACT_EH_HDR 2
+
+/* Endian-neutral code indicating that a function cannot be unwound.  */
+#define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01
+
+struct dwarf_eh_frame_hdr_info

 {
   struct htab *cies;
 {
   struct htab *cies;

-  asection *hdr_sec;
-  unsigned int fde_count, array_count;
-  struct eh_frame_array_ent *array;
+  unsigned int fde_count;

   /* TRUE if .eh_frame_hdr should contain the sorted search table.
      We build it if we successfully read all .eh_frame input sections
      and recognize them.  */
   bfd_boolean table;
   /* TRUE if .eh_frame_hdr should contain the sorted search table.
      We build it if we successfully read all .eh_frame input sections
      and recognize them.  */
   bfd_boolean table;

+  struct eh_frame_array_ent *array;
+};
+
+struct compact_eh_frame_hdr_info
+{
+  unsigned int allocated_entries;
+  /* eh_frame_entry fragments.  */
+  asection **entries;
+};
+
+struct eh_frame_hdr_info
+{
+  asection *hdr_sec;
+  unsigned int array_count;
+  bfd_boolean frame_hdr_is_compact;
+  union
+    {
+      struct dwarf_eh_frame_hdr_info dwarf;
+      struct compact_eh_frame_hdr_info compact;
+    }
+  u;

 };
 
 /* Enum used to identify target specific extensions to the elf_obj_tdata
 };
 
 /* Enum used to identify target specific extensions to the elf_obj_tdata


@@ -408,6 +444,7 @@ enum elf_target_id
 {
   AARCH64_ELF_DATA = 1,
   ALPHA_ELF_DATA,
 {
   AARCH64_ELF_DATA = 1,
   ALPHA_ELF_DATA,

+  ARC_ELF_DATA,

   ARM_ELF_DATA,
   AVR_ELF_DATA,
   BFIN_ELF_DATA,
   ARM_ELF_DATA,
   AVR_ELF_DATA,
   BFIN_ELF_DATA,


@@ -430,6 +467,7 @@ enum elf_target_id
   OR1K_ELF_DATA,
   PPC32_ELF_DATA,
   PPC64_ELF_DATA,
   OR1K_ELF_DATA,
   PPC32_ELF_DATA,
   PPC64_ELF_DATA,

+  PRU_ELF_DATA,

   S390_ELF_DATA,
   SH_ELF_DATA,
   SPARC_ELF_DATA,
   S390_ELF_DATA,
   SH_ELF_DATA,
   SPARC_ELF_DATA,


@@ -440,9 +478,17 @@ enum elf_target_id
   XGATE_ELF_DATA,
   TILEGX_ELF_DATA,
   TILEPRO_ELF_DATA,
   XGATE_ELF_DATA,
   TILEGX_ELF_DATA,
   TILEPRO_ELF_DATA,

+  RISCV_ELF_DATA,

   GENERIC_ELF_DATA
 };
 
   GENERIC_ELF_DATA
 };
 

+struct elf_sym_strtab
+{
+  Elf_Internal_Sym sym;
+  unsigned long dest_index;
+  unsigned long destshndx_index;
+};
+

 /* ELF linker hash table.  */
 
 struct elf_link_hash_table
 /* ELF linker hash table.  */
 
 struct elf_link_hash_table


@@ -478,14 +524,26 @@ struct elf_link_hash_table
   union gotplt_union init_got_offset;
   union gotplt_union init_plt_offset;
 
   union gotplt_union init_got_offset;
   union gotplt_union init_plt_offset;
 

-  /* The number of symbols found in the link which must be put into
-     the .dynsym section.  */
+  /* The number of symbols found in the link which is intended for the
+     mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section.  */

   bfd_size_type dynsymcount;
   bfd_size_type dynsymcount;

+  bfd_size_type local_dynsymcount;

 
   /* The string table of dynamic symbols, which becomes the .dynstr
      section.  */
   struct elf_strtab_hash *dynstr;
 
 
   /* The string table of dynamic symbols, which becomes the .dynstr
      section.  */
   struct elf_strtab_hash *dynstr;
 

+  /* The number of symbol strings found in the link which must be put
+     into the .strtab section.  */
+  bfd_size_type strtabcount;
+
+  /* The array size of the symbol string table, which becomes the
+     .strtab section.  */
+  bfd_size_type strtabsize;
+
+  /* The array of strings, which becomes the .strtab section.  */
+  struct elf_sym_strtab *strtab;
+

   /* The number of buckets in the hash table in the .hash section.
      This is based on the number of dynamic symbols.  */
   bfd_size_type bucketcount;
   /* The number of buckets in the hash table in the .hash section.
      This is based on the number of dynamic symbols.  */
   bfd_size_type bucketcount;


@@ -538,10 +596,15 @@ struct elf_link_hash_table
   asection *srelgot;
   asection *splt;
   asection *srelplt;
   asection *srelgot;
   asection *splt;
   asection *srelplt;

+  asection *sdynbss;
+  asection *srelbss;
+  asection *sdynrelro;
+  asection *sreldynrelro;

   asection *igotplt;
   asection *iplt;
   asection *irelplt;
   asection *irelifunc;
   asection *igotplt;
   asection *iplt;
   asection *irelplt;
   asection *irelifunc;

+  asection *dynsym;

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


@@ -648,9 +711,9 @@ struct elf_size_info {
 enum elf_reloc_type_class {
   reloc_class_normal,
   reloc_class_relative,
 enum elf_reloc_type_class {
   reloc_class_normal,
   reloc_class_relative,

-  reloc_class_plt,

   reloc_class_copy,
   reloc_class_copy,

-  reloc_class_ifunc
+  reloc_class_ifunc,
+  reloc_class_plt

 };
 
 struct elf_reloc_cookie
 };
 
 struct elf_reloc_cookie


@@ -677,15 +740,15 @@ typedef enum {
 struct bfd_elf_special_section
 {
   const char *prefix;
 struct bfd_elf_special_section
 {
   const char *prefix;

-  int prefix_length;
+  unsigned int prefix_length;

   /* 0 means name must match PREFIX exactly.
      -1 means name must start with PREFIX followed by an arbitrary string.
      -2 means name must match PREFIX exactly or consist of PREFIX followed
      by a dot then anything.
      > 0 means name must start with the first PREFIX_LENGTH chars of
      PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX.  */
   /* 0 means name must match PREFIX exactly.
      -1 means name must start with PREFIX followed by an arbitrary string.
      -2 means name must match PREFIX exactly or consist of PREFIX followed
      by a dot then anything.
      > 0 means name must start with the first PREFIX_LENGTH chars of
      PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX.  */

-  int suffix_length;
-  int type;
+  signed int suffix_length;
+  unsigned int type;

   bfd_vma attr;
 };
 
   bfd_vma attr;
 };
 


@@ -699,6 +762,8 @@ typedef asection * (*elf_gc_mark_hook_fn)
   (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
    struct elf_link_hash_entry *, Elf_Internal_Sym *);
 
   (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
    struct elf_link_hash_entry *, Elf_Internal_Sym *);
 

+struct bfd_elf_section_reloc_data;
+

 struct elf_backend_data
 {
   /* The architecture for this backend.  */
 struct elf_backend_data
 {
   /* The architecture for this backend.  */


@@ -711,7 +776,7 @@ struct elf_backend_data
   /* The ELF machine code (EM_xxxx) for this backend.  */
   int elf_machine_code;
 
   /* The ELF machine code (EM_xxxx) for this backend.  */
   int elf_machine_code;
 

-  /* EI_OSABI. */
+  /* EI_OSABI.  */

   int elf_osabi;
 
   /* The maximum page size for this backend.  */
   int elf_osabi;
 
   /* The maximum page size for this backend.  */


@@ -1017,6 +1082,11 @@ struct elf_backend_data
   bfd_boolean (*elf_backend_modify_program_headers)
     (bfd *, struct bfd_link_info *);
 
   bfd_boolean (*elf_backend_modify_program_headers)
     (bfd *, struct bfd_link_info *);
 

+  /* This function is called to see if the PHDR header should be
+     checked for validity.  */
+  bfd_boolean (*elf_backend_allow_non_load_phdr)
+    (bfd *,  const Elf_Internal_Phdr *, unsigned);
+

   /* This function is called before section garbage collection to
      mark entry symbol sections.  */
   void (*gc_keep)
   /* This function is called before section garbage collection to
      mark entry symbol sections.  */
   void (*gc_keep)


@@ -1071,6 +1141,11 @@ struct elf_backend_data
      bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
                      struct elf_link_hash_entry *));
 
      bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *,
                      struct elf_link_hash_entry *));
 

+  /* Filter what symbols of the output file to include in the import
+     library if one is created.  */
+  unsigned int (*elf_backend_filter_implib_symbols)
+    (bfd *, struct bfd_link_info *, asymbol **, long);
+

   /* Copy any information related to dynamic linking from a pre-existing
      symbol to a newly created symbol.  Also called to copy flags and
      other back-end info to a weakdef, in which case the symbol is not
   /* Copy any information related to dynamic linking from a pre-existing
      symbol to a newly created symbol.  Also called to copy flags and
      other back-end info to a weakdef, in which case the symbol is not


@@ -1111,11 +1186,21 @@ struct elf_backend_data
     (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
      struct elf_link_hash_entry **);
 
     (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *,
      struct elf_link_hash_entry **);
 

+  /* Update relocations.  It is allowed to change the number and the order.
+     In such a case hashes should be invalidated.  */
+  void (*elf_backend_update_relocs)
+    (asection *, struct bfd_elf_section_reloc_data *);
+

   /* Count relocations.  Not called for relocatable links
      or if all relocs are being preserved in the output.  */
   unsigned int (*elf_backend_count_relocs)
     (struct bfd_link_info *, asection *);
 
   /* Count relocations.  Not called for relocatable links
      or if all relocs are being preserved in the output.  */
   unsigned int (*elf_backend_count_relocs)
     (struct bfd_link_info *, asection *);
 

+  /* Count additionals relocations.  Called for relocatable links if
+     additional relocations needs to be created.  */
+  unsigned int (*elf_backend_count_additional_relocs)
+    (asection *);
+

   /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
      by r_offset.  If NULL, default to true.  */
   bfd_boolean (*sort_relocs_p)
   /* Say whether to sort relocs output by ld -r and ld --emit-relocs,
      by r_offset.  If NULL, default to true.  */
   bfd_boolean (*sort_relocs_p)


@@ -1238,8 +1323,21 @@ struct elf_backend_data
   bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec,
                                       bfd_vma *code_off);
 
   bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec,
                                       bfd_vma *code_off);
 

+  /* Return the section which RELOC_SEC applies to.  */
+  asection *(*get_reloc_section) (asection *reloc_sec);
+
+  /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
+     has a type >= SHT_LOOS.  Returns TRUE if the fields were initialised,
+     FALSE otherwise.  Can be called multiple times for a given section,
+     until it returns TRUE.  Most of the times it is called ISECTION will be
+     set to an input section that might be associated with the output section.
+     The last time that it is called, ISECTION will be set to NULL.  */
+  bfd_boolean (*elf_backend_copy_special_section_fields)
+    (const bfd *ibfd, bfd *obfd, const Elf_Internal_Shdr *isection,
+     Elf_Internal_Shdr *osection);
+               

   /* Used to handle bad SHF_LINK_ORDER input.  */
   /* Used to handle bad SHF_LINK_ORDER input.  */

-  bfd_error_handler_type link_order_error_handler;
+  void (*link_order_error_handler) (const char *, ...);

 
   /* Name of the PLT relocation section.  */
   const char *relplt_name;
 
   /* Name of the PLT relocation section.  */
   const char *relplt_name;


@@ -1287,12 +1385,21 @@ struct elf_backend_data
      or give an error and return FALSE.  */
   bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int);
 
      or give an error and return FALSE.  */
   bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int);
 

+  /* Encoding used for compact EH tables.  */
+  int (*compact_eh_encoding) (struct bfd_link_info *);
+
+  /* Opcode representing no unwind.  */
+  int (*cant_unwind_opcode) (struct bfd_link_info *);
+

   /* This is non-zero if static TLS segments require a special alignment.  */
   unsigned static_tls_alignment;
 
   /* This is non-zero if static TLS segments require a special alignment.  */
   unsigned static_tls_alignment;
 

-  /* Alignment for the PT_GNU_STACK segment. */
+  /* Alignment for the PT_GNU_STACK segment.  */

   unsigned stack_align;
 
   unsigned stack_align;
 

+  /* Flag bits to assign to a section of type SHT_STRTAB.  */
+  unsigned long elf_strtab_flags;
+

   /* 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


@@ -1330,6 +1437,10 @@ struct elf_backend_data
      backend relocate_section routine for relocatable linking.  */
   unsigned rela_normal : 1;
 
      backend relocate_section routine for relocatable linking.  */
   unsigned rela_normal : 1;
 

+  /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT
+     relocations.  */
+  unsigned dtrel_excludes_plt : 1;
+

   /* TRUE if addresses "naturally" sign extend.  This is used when
      swapping in from Elf32 when BFD64.  */
   unsigned sign_extend_vma : 1;
   /* TRUE if addresses "naturally" sign extend.  This is used when
      swapping in from Elf32 when BFD64.  */
   unsigned sign_extend_vma : 1;


@@ -1343,6 +1454,7 @@ struct elf_backend_data
   unsigned can_refcount : 1;
   unsigned want_got_sym : 1;
   unsigned want_dynbss : 1;
   unsigned can_refcount : 1;
   unsigned want_got_sym : 1;
   unsigned want_dynbss : 1;

+  unsigned want_dynrelro : 1;

 
   /* Targets which do not support physical addressing often require
      that the p_paddr field in the section header to be set to zero.
 
   /* Targets which do not support physical addressing often require
      that the p_paddr field in the section header to be set to zero.


@@ -1441,6 +1553,9 @@ struct bfd_elf_section_data
      field acts as a chain pointer.  */
   struct eh_cie_fde *fde_list;
 
      field acts as a chain pointer.  */
   struct eh_cie_fde *fde_list;
 

+  /* Link from a text section to its .eh_frame_entry section.  */
+  asection *eh_frame_entry;
+

   /* A pointer used for various section optimizations.  */
   void *sec_info;
 };
   /* A pointer used for various section optimizations.  */
   void *sec_info;
 };


@@ -1454,6 +1569,7 @@ struct bfd_elf_section_data
 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
 #define elf_fde_list(sec)      (elf_section_data(sec)->fde_list)
 #define elf_sec_group(sec)     (elf_section_data(sec)->sec_group)
 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
 #define elf_fde_list(sec)      (elf_section_data(sec)->fde_list)
 #define elf_sec_group(sec)     (elf_section_data(sec)->sec_group)

+#define elf_section_eh_frame_entry(sec)        (elf_section_data(sec)->eh_frame_entry)

 
 #define xvec_get_elf_backend_data(xvec) \
   ((const struct elf_backend_data *) (xvec)->backend_data)
 
 #define xvec_get_elf_backend_data(xvec) \
   ((const struct elf_backend_data *) (xvec)->backend_data)


@@ -1492,7 +1608,7 @@ typedef struct obj_attribute
 typedef struct obj_attribute_list
 {
   struct obj_attribute_list *next;
 typedef struct obj_attribute_list
 {
   struct obj_attribute_list *next;

-  int tag;
+  unsigned int tag;

   obj_attribute attr;
 } obj_attribute_list;
 
   obj_attribute attr;
 } obj_attribute_list;
 


@@ -1524,13 +1640,6 @@ struct sdt_note
   bfd_byte data[1];
 };
 
   bfd_byte data[1];
 };
 

-/* NT_GNU_BUILD_ID note type info for input BFDs.  */
-struct elf_build_id
-{
-  size_t size;
-  bfd_byte data[1];
-};
-

 /* tdata information grabbed from an elf core file.  */
 struct core_elf_obj_tdata
 {
 /* tdata information grabbed from an elf core file.  */
 struct core_elf_obj_tdata
 {


@@ -1582,6 +1691,25 @@ struct output_elf_obj_tdata
   bfd_boolean flags_init;
 };
 
   bfd_boolean flags_init;
 };
 

+/* Indicate if the bfd contains symbols that have the STT_GNU_IFUNC
+   symbol type or STB_GNU_UNIQUE binding.  Used to set the osabi
+   field in the ELF header structure.  */
+enum elf_gnu_symbols
+{
+  elf_gnu_symbol_none = 0,
+  elf_gnu_symbol_any = 1 << 0,
+  elf_gnu_symbol_ifunc = (elf_gnu_symbol_any | 1 << 1),
+  elf_gnu_symbol_unique = (elf_gnu_symbol_any | 1 << 2),
+  elf_gnu_symbol_all = (elf_gnu_symbol_ifunc | elf_gnu_symbol_unique)
+};
+
+typedef struct elf_section_list
+{
+  Elf_Internal_Shdr          hdr;
+  unsigned int               ndx;
+  struct elf_section_list *  next;
+} elf_section_list;
+

 /* Some private data is stashed away for future use using the tdata pointer
    in the bfd structure.  */
 
 /* Some private data is stashed away for future use using the tdata pointer
    in the bfd structure.  */
 


@@ -1598,7 +1726,7 @@ struct elf_obj_tdata
   Elf_Internal_Shdr dynversym_hdr;
   Elf_Internal_Shdr dynverref_hdr;
   Elf_Internal_Shdr dynverdef_hdr;
   Elf_Internal_Shdr dynversym_hdr;
   Elf_Internal_Shdr dynverref_hdr;
   Elf_Internal_Shdr dynverdef_hdr;

-  Elf_Internal_Shdr symtab_shndx_hdr;
+  elf_section_list * symtab_shndx_list;

   bfd_vma gp;                          /* The gp value */
   unsigned int gp_size;                        /* The gp size */
   unsigned int num_elf_sections;       /* elf_sect_ptr size */
   bfd_vma gp;                          /* The gp value */
   unsigned int gp_size;                        /* The gp size */
   unsigned int num_elf_sections;       /* elf_sect_ptr size */


@@ -1665,9 +1793,6 @@ struct elf_obj_tdata
   obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES];
   obj_attribute_list *other_obj_attributes[2];
 
   obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES];
   obj_attribute_list *other_obj_attributes[2];
 

-  /* NT_GNU_BUILD_ID note type.  */
-  struct elf_build_id *build_id;
-

   /* Linked-list containing information about every Systemtap section
      found in the object file.  Each section corresponds to one entry
      in the list.  */
   /* Linked-list containing information about every Systemtap section
      found in the object file.  Each section corresponds to one entry
      in the list.  */


@@ -1676,7 +1801,7 @@ struct elf_obj_tdata
   Elf_Internal_Shdr **group_sect_ptr;
   int num_group;
 
   Elf_Internal_Shdr **group_sect_ptr;
   int num_group;
 

-  unsigned int symtab_section, symtab_shndx_section, dynsymtab_section;
+  unsigned int symtab_section, dynsymtab_section;

   unsigned int dynversym_section, dynverdef_section, dynverref_section;
 
   /* An identifier used to distinguish different target
   unsigned int dynversym_section, dynverdef_section, dynverref_section;
 
   /* An identifier used to distinguish different target


@@ -1695,10 +1820,7 @@ struct elf_obj_tdata
      symbols.  */
   bfd_boolean bad_symtab;
 
      symbols.  */
   bfd_boolean bad_symtab;
 

-  /* True if the bfd contains symbols that have the STT_GNU_IFUNC
-     symbol type or STB_GNU_UNIQUE binding.  Used to set the osabi
-     field in the ELF header structure.  */
-  bfd_boolean has_gnu_symbols;
+  enum elf_gnu_symbols has_gnu_symbols;

 
   /* Information grabbed from an elf core file.  */
   struct core_elf_obj_tdata *core;
 
   /* Information grabbed from an elf core file.  */
   struct core_elf_obj_tdata *core;


@@ -1721,7 +1843,7 @@ struct elf_obj_tdata
 #define elf_stack_flags(bfd)   (elf_tdata(bfd) -> o->stack_flags)
 #define elf_shstrtab(bfd)      (elf_tdata(bfd) -> o->strtab_ptr)
 #define elf_onesymtab(bfd)     (elf_tdata(bfd) -> symtab_section)
 #define elf_stack_flags(bfd)   (elf_tdata(bfd) -> o->stack_flags)
 #define elf_shstrtab(bfd)      (elf_tdata(bfd) -> o->strtab_ptr)
 #define elf_onesymtab(bfd)     (elf_tdata(bfd) -> symtab_section)

-#define elf_symtab_shndx(bfd)  (elf_tdata(bfd) -> symtab_shndx_section)
+#define elf_symtab_shndx_list(bfd)     (elf_tdata(bfd) -> symtab_shndx_list)

 #define elf_strtab_sec(bfd)    (elf_tdata(bfd) -> o->strtab_section)
 #define elf_shstrtab_sec(bfd)  (elf_tdata(bfd) -> o->shstrtab_section)
 #define elf_symtab_hdr(bfd)    (elf_tdata(bfd) -> symtab_hdr)
 #define elf_strtab_sec(bfd)    (elf_tdata(bfd) -> o->strtab_section)
 #define elf_shstrtab_sec(bfd)  (elf_tdata(bfd) -> o->shstrtab_section)
 #define elf_symtab_hdr(bfd)    (elf_tdata(bfd) -> symtab_hdr)


@@ -1858,6 +1980,8 @@ extern bfd_boolean _bfd_elf_section_already_linked
   (bfd *, asection *, struct bfd_link_info *);
 extern void bfd_elf_set_group_contents
   (bfd *, asection *, void *);
   (bfd *, asection *, struct bfd_link_info *);
 extern void bfd_elf_set_group_contents
   (bfd *, asection *, void *);

+extern unsigned int _bfd_elf_filter_global_symbols
+  (bfd *, struct bfd_link_info *, asymbol **, long);

 extern asection *_bfd_elf_check_kept_section
   (asection *, struct bfd_link_info *);
 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms
 extern asection *_bfd_elf_check_kept_section
   (asection *, struct bfd_link_info *);
 #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms


@@ -1922,7 +2046,7 @@ extern bfd_boolean _bfd_elf_find_line
   (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
 extern bfd_boolean _bfd_elf_find_inliner_info
   (bfd *, const char **, const char **, unsigned int *);
   (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
 extern bfd_boolean _bfd_elf_find_inliner_info
   (bfd *, const char **, const char **, unsigned int *);

-extern bfd_boolean _bfd_elf_find_function
+extern asymbol *_bfd_elf_find_function

   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **);
 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
   (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **);
 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol


@@ -1951,36 +2075,43 @@ 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);
   (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
-  (void);

 
 extern struct elf_strtab_hash * _bfd_elf_strtab_init
   (void);
 extern void _bfd_elf_strtab_free
   (struct elf_strtab_hash *);
 
 extern struct elf_strtab_hash * _bfd_elf_strtab_init
   (void);
 extern void _bfd_elf_strtab_free
   (struct elf_strtab_hash *);

-extern bfd_size_type _bfd_elf_strtab_add
+extern size_t _bfd_elf_strtab_add

   (struct elf_strtab_hash *, const char *, bfd_boolean);
 extern void _bfd_elf_strtab_addref
   (struct elf_strtab_hash *, const char *, bfd_boolean);
 extern void _bfd_elf_strtab_addref

-  (struct elf_strtab_hash *, bfd_size_type);
+  (struct elf_strtab_hash *, size_t);

 extern void _bfd_elf_strtab_delref
 extern void _bfd_elf_strtab_delref

-  (struct elf_strtab_hash *, bfd_size_type);
+  (struct elf_strtab_hash *, size_t);

 extern unsigned int _bfd_elf_strtab_refcount
 extern unsigned int _bfd_elf_strtab_refcount

-  (struct elf_strtab_hash *, bfd_size_type);
+  (struct elf_strtab_hash *, size_t);

 extern void _bfd_elf_strtab_clear_all_refs
 extern void _bfd_elf_strtab_clear_all_refs

-  (struct elf_strtab_hash *tab);
-extern void _bfd_elf_strtab_restore_size
-  (struct elf_strtab_hash *, bfd_size_type);
+  (struct elf_strtab_hash *);
+extern void *_bfd_elf_strtab_save
+  (struct elf_strtab_hash *);
+extern void _bfd_elf_strtab_restore
+  (struct elf_strtab_hash *, void *);

 extern bfd_size_type _bfd_elf_strtab_size
   (struct elf_strtab_hash *);
 extern bfd_size_type _bfd_elf_strtab_offset
 extern bfd_size_type _bfd_elf_strtab_size
   (struct elf_strtab_hash *);
 extern bfd_size_type _bfd_elf_strtab_offset

-  (struct elf_strtab_hash *, bfd_size_type);
+  (struct elf_strtab_hash *, size_t);

 extern bfd_boolean _bfd_elf_strtab_emit
   (bfd *, struct elf_strtab_hash *);
 extern void _bfd_elf_strtab_finalize
   (struct elf_strtab_hash *);
 
 extern bfd_boolean _bfd_elf_strtab_emit
   (bfd *, struct elf_strtab_hash *);
 extern void _bfd_elf_strtab_finalize
   (struct elf_strtab_hash *);
 

+extern bfd_boolean bfd_elf_parse_eh_frame_entries
+  (bfd *, struct bfd_link_info *);
+extern bfd_boolean _bfd_elf_parse_eh_frame_entry
+  (struct bfd_link_info *, asection *, struct elf_reloc_cookie *);

 extern void _bfd_elf_parse_eh_frame
   (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *);
 extern void _bfd_elf_parse_eh_frame
   (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *);

+extern bfd_boolean _bfd_elf_end_eh_frame_parsing
+  (struct bfd_link_info *info);
+

 extern bfd_boolean _bfd_elf_discard_section_eh_frame
   (bfd *, struct bfd_link_info *, asection *,
    bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *);
 extern bfd_boolean _bfd_elf_discard_section_eh_frame
   (bfd *, struct bfd_link_info *, asection *,
    bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *);


@@ -1990,10 +2121,15 @@ extern bfd_vma _bfd_elf_eh_frame_section_offset
   (bfd *, struct bfd_link_info *, asection *, bfd_vma);
 extern bfd_boolean _bfd_elf_write_section_eh_frame
   (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
   (bfd *, struct bfd_link_info *, asection *, bfd_vma);
 extern bfd_boolean _bfd_elf_write_section_eh_frame
   (bfd *, struct bfd_link_info *, asection *, bfd_byte *);

+bfd_boolean _bfd_elf_write_section_eh_frame_entry
+  (bfd *, struct bfd_link_info *, asection *, bfd_byte *);
+extern bfd_boolean _bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info *);

 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_eh_frame_present
   (struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_eh_frame_present
   (struct bfd_link_info *);

+extern bfd_boolean _bfd_elf_eh_frame_entry_present
+  (struct bfd_link_info *);

 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
   (struct bfd_link_info *);
 
 extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
   (struct bfd_link_info *);
 


@@ -2017,6 +2153,8 @@ extern bfd_boolean _bfd_elf_create_dynamic_sections
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_create_got_section
   (bfd *, struct bfd_link_info *);
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_create_got_section
   (bfd *, struct bfd_link_info *);

+extern asection *_bfd_elf_section_for_symbol
+  (struct elf_reloc_cookie *, unsigned long, bfd_boolean);

 extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym
   (bfd *, struct bfd_link_info *, asection *, const char *);
 extern void _bfd_elf_init_1_index_section
 extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym
   (bfd *, struct bfd_link_info *, asection *, const char *);
 extern void _bfd_elf_init_1_index_section


@@ -2159,6 +2297,8 @@ extern bfd_boolean bfd_elf_link_add_symbols
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_add_dynamic_entry
   (struct bfd_link_info *, bfd_vma, bfd_vma);
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_add_dynamic_entry
   (struct bfd_link_info *, bfd_vma, bfd_vma);

+extern bfd_boolean _bfd_elf_link_check_relocs
+  (bfd *, struct bfd_link_info *);

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


@@ -2210,7 +2350,7 @@ extern asection *_bfd_elf_gc_mark_hook
 
 extern asection *_bfd_elf_gc_mark_rsec
   (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
 
 extern asection *_bfd_elf_gc_mark_rsec
   (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,

-   struct elf_reloc_cookie *);
+   struct elf_reloc_cookie *, bfd_boolean *);

 
 extern bfd_boolean _bfd_elf_gc_mark_reloc
   (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,
 
 extern bfd_boolean _bfd_elf_gc_mark_reloc
   (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn,


@@ -2232,6 +2372,9 @@ extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets
 extern bfd_boolean bfd_elf_gc_common_final_link
   (bfd *, struct bfd_link_info *);
 
 extern bfd_boolean bfd_elf_gc_common_final_link
   (bfd *, struct bfd_link_info *);
 

+extern asection *_bfd_elf_is_start_stop
+  (const struct bfd_link_info *, struct elf_link_hash_entry *);
+

 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
   (bfd_vma, void *);
 
 extern bfd_boolean bfd_elf_reloc_symbol_deleted_p
   (bfd_vma, void *);
 


@@ -2246,6 +2389,8 @@ extern bfd_boolean _bfd_elf_is_function_type (unsigned int);
 extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *,
                                                  bfd_vma *);
 
 extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *,
                                                  bfd_vma *);
 

+extern asection *_bfd_elf_get_reloc_section (asection *);
+

 extern int bfd_elf_get_default_section_type (flagword);
 
 extern bfd_boolean bfd_elf_lookup_section_flags
 extern int bfd_elf_get_default_section_type (flagword);
 
 extern bfd_boolean bfd_elf_lookup_section_flags


@@ -2254,7 +2399,18 @@ extern bfd_boolean bfd_elf_lookup_section_flags
 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);
 

-/* Exported interface for writing elf corefile notes. */
+/* PowerPC @tls opcode transform/validate.  */
+extern unsigned int _bfd_elf_ppc_at_tls_transform
+  (unsigned int, unsigned int);
+/* PowerPC @tprel opcode transform/validate.  */
+extern unsigned int _bfd_elf_ppc_at_tprel_transform
+  (unsigned int, unsigned int);
+/* PowerPC elf_object_p tweak.  */
+extern bfd_boolean _bfd_elf_ppc_set_arch (bfd *);
+/* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit.  */
+extern void _bfd_elf_ppc_merge_fp_attributes (bfd *, struct bfd_link_info *);
+
+/* Exported interface for writing elf corefile notes.  */

 extern char *elfcore_write_note
   (bfd *, char *, int *, const char *, int, const void *, int);
 extern char *elfcore_write_prpsinfo
 extern char *elfcore_write_note
   (bfd *, char *, int *, const char *, int, const void *, int);
 extern char *elfcore_write_prpsinfo


@@ -2351,24 +2507,25 @@ extern bfd *_bfd_elf64_bfd_from_remote_memory
 
 extern bfd_vma bfd_elf_obj_attr_size (bfd *);
 extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma);
 
 extern bfd_vma bfd_elf_obj_attr_size (bfd *);
 extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma);

-extern int bfd_elf_get_obj_attr_int (bfd *, int, int);
-extern void bfd_elf_add_obj_attr_int (bfd *, int, int, unsigned int);
+extern int bfd_elf_get_obj_attr_int (bfd *, int, unsigned int);
+extern void bfd_elf_add_obj_attr_int (bfd *, int, unsigned int, unsigned int);

 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
   bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))
 #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \
   bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE))

-extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *);
+extern void bfd_elf_add_obj_attr_string (bfd *, int, unsigned 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))
 #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_int_string (bfd *, int, int, unsigned int,
-                                            const char *);
+extern void bfd_elf_add_obj_attr_int_string (bfd *, int, unsigned 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 *);
 #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 int _bfd_elf_obj_attrs_arg_type (bfd *, int, int);
+extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, unsigned int);

 extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);
 extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *);

-extern bfd_boolean _bfd_elf_merge_object_attributes (bfd *, bfd *);
+extern bfd_boolean _bfd_elf_merge_object_attributes
+  (bfd *, struct bfd_link_info *);

 extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int);
 extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *);
 extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec);
 extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int);
 extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *);
 extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec);


@@ -2397,7 +2554,8 @@ extern bfd_boolean _bfd_elf_create_ifunc_sections
   (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
   (struct bfd_link_info *, struct elf_link_hash_entry *,
   (bfd *, struct bfd_link_info *);
 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, unsigned int);
+   struct elf_dyn_relocs **, bfd_boolean *, unsigned int,
+   unsigned int, unsigned int, bfd_boolean);

 extern long _bfd_elf_ifunc_get_synthetic_symtab
   (bfd *, long, asymbol **, long, asymbol **, asymbol **, asection *,
    bfd_vma *(*) (bfd *, asymbol **, asection *, asection *));
 extern long _bfd_elf_ifunc_get_synthetic_symtab
   (bfd *, long, asymbol **, long, asymbol **, asymbol **, asection *,
    bfd_vma *(*) (bfd *, asymbol **, asection *, asection *));


@@ -2476,17 +2634,16 @@ extern asection _bfd_elf_large_com_section;
       else if (info->unresolved_syms_in_objects == RM_IGNORE           \
               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)          \
        ignored = TRUE;                                                 \
       else if (info->unresolved_syms_in_objects == RM_IGNORE           \
               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)          \
        ignored = TRUE;                                                 \

-      else if (!info->relocatable)                                     \
+      else if (!bfd_link_relocatable (info))                           \

        {                                                               \
          bfd_boolean err;                                              \
          err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR  \
                 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT);       \
        {                                                               \
          bfd_boolean err;                                              \
          err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR  \
                 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT);       \

-         if (!info->callbacks->undefined_symbol (info,                 \
-                                                 h->root.root.string,  \
-                                                 input_bfd,            \
-                                                 input_section,        \
-                                                 rel->r_offset, err))  \
-           return FALSE;                                               \
+         (*info->callbacks->undefined_symbol) (info,                   \
+                                               h->root.root.string,    \
+                                               input_bfd,              \
+                                               input_section,          \
+                                               rel->r_offset, err);    \

          warned = TRUE;                                                \
        }                                                               \
       (void) unresolved_reloc;                                         \
          warned = TRUE;                                                \
        }                                                               \
       (void) unresolved_reloc;                                         \


@@ -2511,7 +2668,7 @@ extern asection _bfd_elf_large_com_section;
     _bfd_clear_contents (howto, input_bfd, input_section,              \
                         contents + rel[index].r_offset);               \
                                                                        \
     _bfd_clear_contents (howto, input_bfd, input_section,              \
                         contents + rel[index].r_offset);               \
                                                                        \

-    if (info->relocatable                                              \
+    if (bfd_link_relocatable (info)                                    \

        && (input_section->flags & SEC_DEBUGGING))                      \
       {                                                                        \
        /* Only remove relocations in debug sections since other        \
        && (input_section->flags & SEC_DEBUGGING))                      \
       {                                                                        \
        /* Only remove relocations in debug sections since other        \