X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf-bfd.h;h=fbdd19ba21e35fbbe15da230c3ad5ce7ecb94b6d;hb=d4d8aee345704f7c39ebe9910cc08386708637b1;hp=a9e2d3eeaf14301b526b6a84a5ec516be46531f6;hpb=6d5944fca682fe97f37e537f78b665ada2400f51;p=deliverable%2Fbinutils-gdb.git

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index a9e2d3eeaf..fbdd19ba21 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1,5 +1,5 @@
 /* BFD back-end data structures for ELF files.
-   Copyright (C) 1992-2019 Free Software Foundation, Inc.
+   Copyright (C) 1992-2020 Free Software Foundation, Inc.
    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -156,9 +156,13 @@ struct elf_link_hash_entry
   /* Same, but tracks a procedure linkage table entry.  */
   union gotplt_union plt;
 
-  /* Symbol size.  */
+  /* Symbol size.  NB: All fields starting from here are cleared by
+    _bfd_elf_link_hash_newfunc.  */
   bfd_size_type size;
 
+  /* Track dynamic relocs copied for this symbol.  */
+  struct elf_dyn_relocs *dyn_relocs;
+
   /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
   unsigned int type : 8;
 
@@ -635,10 +639,10 @@ struct elf_link_hash_table
 
   /* Cached first output tls section and size of PT_TLS segment.  */
   asection *tls_sec;
-  bfd_size_type tls_size;
+  bfd_size_type tls_size;  /* Bytes.  */
 
-  /* A linked list of BFD's loaded in the link.  */
-  struct elf_link_loaded_list *loaded;
+  /* A linked list of dynamic BFD's loaded in the link.  */
+  struct elf_link_loaded_list *dyn_loaded;
 
   /* Short-cuts to get to dynamic linker sections.  */
   asection *sgot;
@@ -955,7 +959,7 @@ struct elf_backend_data
   /* A function to convert machine dependent ELF section header flags to
      BFD internal section header flags.  */
   bfd_boolean (*elf_backend_section_flags)
-    (flagword *, const Elf_Internal_Shdr *);
+    (const Elf_Internal_Shdr *);
 
   /* A function that returns a struct containing ELF section flags and
      type for the given BFD section.   */
@@ -1083,6 +1087,12 @@ struct elf_backend_data
   bfd_boolean (*elf_backend_size_dynamic_sections)
     (bfd *output_bfd, struct bfd_link_info *info);
 
+  /* The STRIP_ZERO_SIZED_DYNAMIC_SECTIONS function is called by the
+     ELF backend linker to strip zero-sized dynamic sections after
+     the section sizes have been set.  */
+  bfd_boolean (*elf_backend_strip_zero_sized_dynamic_sections)
+    (struct bfd_link_info *info);
+
   /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections
      we keep to use as a base for relocs and symbols.  */
   void (*elf_backend_init_index_section)
@@ -1165,7 +1175,7 @@ struct elf_backend_data
 
   /* This function is called to modify program headers just before
      they are written.  */
-  bfd_boolean (*elf_backend_modify_program_headers)
+  bfd_boolean (*elf_backend_modify_headers)
     (bfd *, struct bfd_link_info *);
 
   /* This function is called to see if the PHDR header should be
@@ -1192,10 +1202,9 @@ struct elf_backend_data
   bfd_boolean (*gc_mark_extra_sections)
     (struct bfd_link_info *, elf_gc_mark_hook_fn);
 
-  /* This function, if defined, is called after the ELF headers have
-     been created.  This allows for things like the OS and ABI versions
-     to be changed.  */
-  void (*elf_backend_post_process_headers)
+  /* This function is called to initialise ELF file header info.
+     Customised versions can modify things like the OS and ABI version.  */
+  bfd_boolean (*elf_backend_init_file_header)
     (bfd *, struct bfd_link_info *);
 
   /* This function, if defined, prints a symbol to file and returns the
@@ -1377,6 +1386,8 @@ struct elf_backend_data
      int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr,
 				bfd_size_type len));
 
+  bfd_boolean (*elf_backend_core_find_build_id) (bfd *, bfd_vma);
+
   /* This function is used by `_bfd_elf_get_synthetic_symtab';
      see elf.c.  */
   bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *);
@@ -1502,6 +1513,22 @@ struct elf_backend_data
   /* Opcode representing no unwind.  */
   int (*cant_unwind_opcode) (struct bfd_link_info *);
 
+  /* Called when emitting an ELF symbol whoes input version had an
+     ST_SHNDX field set to a value in the range SHN_LOPROC..SHN_HIOS.
+     Returns the value to be installed in the ST_SHNDX field of the
+     emitted symbol.  If not defined, the value is left unchanged.  */
+  unsigned int (*symbol_section_index) (bfd *, elf_symbol_type *);
+  
+  /* Called when a section has extra reloc sections.  */
+  bfd_boolean (*init_secondary_reloc_section) (bfd *, Elf_Internal_Shdr *,
+					       const char *, unsigned int);
+
+  /* Called when after loading the normal relocs for a section.  */
+  bfd_boolean (*slurp_secondary_relocs) (bfd *, asection *, asymbol **);
+
+  /* Called after writing the normal relocs for a section.  */
+  bfd_boolean (*write_secondary_relocs) (bfd *, asection *);
+
   /* This is non-zero if static TLS segments require a special alignment.  */
   unsigned static_tls_alignment;
 
@@ -1936,7 +1963,7 @@ struct elf_obj_tdata
   struct sdt_note *sdt_note_head;
 
   Elf_Internal_Shdr **group_sect_ptr;
-  int num_group;
+  unsigned int num_group;
 
   /* Index into group_sect_ptr, updated by setup_group when finding a
      section's group.  Used to optimize subsequent group searches.  */
@@ -2060,7 +2087,7 @@ extern bfd_boolean _bfd_elf_copy_private_bfd_data
 extern bfd_boolean _bfd_elf_print_private_bfd_data
   (bfd *, void *);
 const char * _bfd_elf_get_symbol_version_string
-  (bfd *, asymbol *, bfd_boolean *);
+  (bfd *, asymbol *, bfd_boolean, bfd_boolean *);
 extern void bfd_elf_print_symbol
   (bfd *, void *, asymbol *, bfd_print_symbol_type);
 
@@ -2252,8 +2279,12 @@ 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_len
+  (struct elf_strtab_hash *);
 extern bfd_size_type _bfd_elf_strtab_offset
   (struct elf_strtab_hash *, size_t);
+extern const char * _bfd_elf_strtab_str
+  (struct elf_strtab_hash *, size_t idx, bfd_size_type *offset);
 extern bfd_boolean _bfd_elf_strtab_emit
   (bfd *, struct elf_strtab_hash *);
 extern void _bfd_elf_strtab_finalize
@@ -2299,6 +2330,8 @@ extern bfd_boolean _bfd_elf_compute_section_file_positions
   (bfd *, struct bfd_link_info *);
 extern file_ptr _bfd_elf_assign_file_position_for_section
   (Elf_Internal_Shdr *, file_ptr, bfd_boolean);
+extern bfd_boolean _bfd_elf_modify_headers
+  (bfd *, struct bfd_link_info *);
 
 extern bfd_boolean _bfd_elf_validate_reloc
   (bfd *, arelent *);
@@ -2383,13 +2416,13 @@ extern bfd_boolean _bfd_elf_setup_sections
 extern struct bfd_link_hash_entry *bfd_elf_define_start_stop
   (struct bfd_link_info *, const char *, asection *);
 
-extern void _bfd_elf_post_process_headers (bfd *, struct bfd_link_info *);
+extern bfd_boolean _bfd_elf_init_file_header (bfd *, struct bfd_link_info *);
 
 extern bfd_boolean _bfd_elf_final_write_processing (bfd *);
 
-extern const bfd_target *bfd_elf32_object_p
+extern bfd_cleanup bfd_elf32_object_p
   (bfd *);
-extern const bfd_target *bfd_elf32_core_file_p
+extern bfd_cleanup bfd_elf32_core_file_p
   (bfd *);
 extern char *bfd_elf32_core_file_failing_command
   (bfd *);
@@ -2399,6 +2432,8 @@ extern bfd_boolean bfd_elf32_core_file_matches_executable_p
   (bfd *, bfd *);
 extern int bfd_elf32_core_file_pid
   (bfd *);
+extern bfd_boolean _bfd_elf32_core_find_build_id
+  (bfd *, bfd_vma);
 
 extern bfd_boolean bfd_elf32_swap_symbol_in
   (bfd *, const void *, const void *, Elf_Internal_Sym *);
@@ -2433,9 +2468,9 @@ extern void bfd_elf32_write_relocs
 extern bfd_boolean bfd_elf32_slurp_reloc_table
   (bfd *, asection *, asymbol **, bfd_boolean);
 
-extern const bfd_target *bfd_elf64_object_p
+extern bfd_cleanup bfd_elf64_object_p
   (bfd *);
-extern const bfd_target *bfd_elf64_core_file_p
+extern bfd_cleanup bfd_elf64_core_file_p
   (bfd *);
 extern char *bfd_elf64_core_file_failing_command
   (bfd *);
@@ -2445,6 +2480,8 @@ extern bfd_boolean bfd_elf64_core_file_matches_executable_p
   (bfd *, bfd *);
 extern int bfd_elf64_core_file_pid
   (bfd *);
+extern bfd_boolean _bfd_elf64_core_find_build_id
+  (bfd *, bfd_vma);
 
 extern bfd_boolean bfd_elf64_swap_symbol_in
   (bfd *, const void *, const void *, Elf_Internal_Sym *);
@@ -2493,6 +2530,10 @@ 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);
+extern bfd_boolean _bfd_elf_strip_zero_sized_dynamic_sections
+  (struct bfd_link_info *);
+extern int bfd_elf_add_dt_needed_tag
+  (bfd *, struct bfd_link_info *);
 extern bfd_boolean _bfd_elf_link_check_relocs
   (bfd *, struct bfd_link_info *);
 
@@ -2701,6 +2742,8 @@ extern char *elfcore_write_aarch_sve
   (bfd *, char *, int *, const void *, int);
 extern char *elfcore_write_aarch_pauth
   (bfd *, char *, int *, const void *, int);
+extern char *elfcore_write_arc_v2
+  (bfd *, char *, int *, const void *, int);
 extern char *elfcore_write_lwpstatus
   (bfd *, char *, int *, long, int, const void *);
 extern char *elfcore_write_register_note
@@ -2769,6 +2812,7 @@ extern bfd_boolean _bfd_elf_merge_object_attributes
 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 elf_read_notes (bfd *, file_ptr, bfd_size_type, size_t);
 
 extern bfd_boolean _bfd_elf_parse_gnu_properties
   (bfd *, Elf_Internal_Note *);
@@ -2818,14 +2862,31 @@ extern bfd_vma elf32_r_sym (bfd_vma);
 
 extern bfd_boolean is_debuginfo_file (bfd *);
 
+
+extern bfd_boolean _bfd_elf_init_secondary_reloc_section
+  (bfd *, Elf_Internal_Shdr *, const char *, unsigned int);
+extern bfd_boolean _bfd_elf_slurp_secondary_reloc_section
+  (bfd *, asection *, asymbol **);
+extern bfd_boolean _bfd_elf_copy_special_section_fields
+  (const bfd *, bfd *, const Elf_Internal_Shdr *, Elf_Internal_Shdr *);
+extern bfd_boolean _bfd_elf_write_secondary_reloc_section
+  (bfd *, asection *);
+extern unsigned int _bfd_elf_symbol_section_index
+  (bfd *, elf_symbol_type *);
+
+extern asection *_bfd_elf_readonly_dynrelocs
+  (struct elf_link_hash_entry *);
+extern bfd_boolean _bfd_elf_maybe_set_textrel
+  (struct elf_link_hash_entry *, void *);
+
 /* Large common section.  */
 extern asection _bfd_elf_large_com_section;
 
 /* 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))
+  (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \
+   ^ (SYM) ^ (((ID) & 0xffff0000U) >> 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
@@ -2887,8 +2948,9 @@ extern asection _bfd_elf_large_com_section;
       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);	\
+	  err = (info->unresolved_syms_in_objects == RM_DIAGNOSE &&	\
+		 !info->warn_unresolved_syms)				\
+		 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT;	\
 	  (*info->callbacks->undefined_symbol) (info,			\
 						h->root.root.string,	\
 						input_bfd,		\
@@ -2961,6 +3023,14 @@ extern asection _bfd_elf_large_com_section;
 	 || (H)->start_stop \
 	 || ((INFO)->dynamic && !(H)->dynamic)))
 
+/* Determine if a section contains CTF data, using its name.  */
+static inline bfd_boolean
+bfd_section_is_ctf (const asection *sec)
+{
+  const char *name = bfd_section_name (sec);
+  return strncmp (name, ".ctf", 4) == 0 && (name[4] == 0 || name[4] == '.');
+}
+
 #ifdef __cplusplus
 }
 #endif