/* Symbol st_other value, symbol visibility. */
unsigned int other : 8;
+ /* The symbol's st_target_internal value (see Elf_Internal_Sym). */
+ unsigned int target_internal : 8;
+
/* Symbol is referenced by a non-shared object (other than the object
in which it is defined). */
unsigned int ref_regular : 1;
SH_ELF_DATA,
SPARC_ELF_DATA,
SPU_ELF_DATA,
+ TIC6X_ELF_DATA,
X86_64_ELF_DATA,
XTENSA_ELF_DATA,
GENERIC_ELF_DATA
/* The architecture for this backend. */
enum bfd_architecture arch;
+ /* An identifier used to distinguish different target specific
+ extensions to elf_obj_tdata and elf_link_hash_table structures. */
+ enum elf_target_id target_id;
+
/* The ELF machine code (EM_xxxx) for this backend. */
int elf_machine_code;
/* 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. */
+ /* This function determines the order in which any attributes are
+ written. It must be defined for input in the range
+ LEAST_KNOWN_OBJ_ATTRIBUTE..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);
+ /* Handle merging unknown attributes; either warn and return TRUE,
+ or give an error and return FALSE. */
+ bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int);
+
+ /* This is non-zero if static TLS segments require a special alignment. */
+ unsigned static_tls_alignment;
+
/* 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
unsigned default_execstack : 1;
};
+/* Information about reloc sections associated with a bfd_elf_section_data
+ structure. */
+struct bfd_elf_section_reloc_data
+{
+ /* The ELF header for the reloc section associated with this
+ section, if any. */
+ Elf_Internal_Shdr *hdr;
+ /* The number of relocations currently assigned to HDR. */
+ unsigned int count;
+ /* The ELF section number of the reloc section. Only used for an
+ output file. */
+ int idx;
+ /* Used by the backend linker to store the symbol hash table entries
+ associated with relocs against global symbols. */
+ struct elf_link_hash_entry **hashes;
+};
+
/* Information stored for each BFD section in an ELF file. This
structure is allocated by elf_new_section_hook. */
/* The ELF header for this section. */
Elf_Internal_Shdr this_hdr;
- /* The ELF header for the reloc section associated with this
- section, if any. */
- Elf_Internal_Shdr rel_hdr;
-
- /* If there is a second reloc section associated with this section,
- as can happen on Irix 6, this field points to the header. */
- Elf_Internal_Shdr *rel_hdr2;
-
- /* The number of relocations currently assigned to REL_HDR. */
- unsigned int rel_count;
-
- /* The number of relocations currently assigned to REL_HDR2. */
- unsigned int rel_count2;
+ /* Information about the REL and RELA reloc sections associated
+ with this section, if any. */
+ struct bfd_elf_section_reloc_data rel, rela;
/* The ELF section number of this section. */
int this_idx;
- /* The ELF section number of the reloc section indicated by
- REL_HDR if any. Only used for an output file. */
- int rel_idx;
-
- /* The ELF section number of the reloc section indicated by
- REL_HDR2 if any. Only used for an output file. */
- int rel_idx2;
-
/* Used by the backend linker when generating a shared library to
record the dynamic symbol index for a section symbol
corresponding to this section. A value of 0 means that there is
/* A pointer to the linked-to section for SHF_LINK_ORDER. */
asection *linked_to;
- /* Used by the backend linker to store the symbol hash table entries
- associated with relocs against global symbols. */
- struct elf_link_hash_entry **rel_hashes;
-
/* A pointer to the swapped relocs. If the section uses REL relocs,
rather than RELA, all the r_addend fields will be zero. This
pointer may be NULL. It is used by the backend linker. */
#define get_elf_backend_data(abfd) \
xvec_get_elf_backend_data ((abfd)->xvec)
+/* The least object attributes (within an attributes subsection) known
+ for any target. Some code assumes that the value 0 is not used and
+ the field for that attribute can instead be used as a marker to
+ indicate that attributes have been initialized. */
+#define LEAST_KNOWN_OBJ_ATTRIBUTE 2
+
/* The maximum number of known object attributes for any target. */
#define NUM_KNOWN_OBJ_ATTRIBUTES 71
Tag_compatibility = 32
};
+/* The following struct stores information about every SystemTap section
+ found in the object file. */
+struct sdt_note
+{
+ struct sdt_note *next;
+ bfd_size_type size;
+ bfd_byte data[1];
+};
+
/* Some private data is stashed away for future use using the tdata pointer
in the bfd structure. */
bfd_size_type build_id_size;
bfd_byte *build_id;
+ /* Linked-list containing information about every Systemtap section
+ found in the object file. Each section corresponds to one entry
+ in the list. */
+ struct sdt_note *sdt_note_head;
+
/* 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;
+ symbol type or STB_GNU_UNIQUE binding. Used to set the osabi
+ field in the ELF header structure. */
+ bfd_boolean has_gnu_symbols;
/* An identifier used to distinguish different target
specific extensions to this structure. */
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
extern bfd_boolean bfd_elf_allocate_object
(bfd *, size_t, enum elf_target_id);
-extern bfd_boolean bfd_elf_make_generic_object
+extern bfd_boolean bfd_elf_make_object
(bfd *);
extern bfd_boolean bfd_elf_mkcorefile
(bfd *);
(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_size_group_sections
+ (struct bfd_link_info *);
+extern bfd_boolean _bfd_elf_fixup_group_sections
+(bfd *, asection *);
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_new_section_hook
(bfd *, asection *);
extern bfd_boolean _bfd_elf_init_reloc_shdr
- (bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean);
+ (bfd *, struct bfd_elf_section_reloc_data *, asection *, bfd_boolean);
extern const struct bfd_elf_special_section *_bfd_elf_get_special_section
(const char *, const struct bfd_elf_special_section *, unsigned int);
extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr
(bfd *);
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_swap_symbol_in
(bfd *, const void *, const void *, Elf_Internal_Sym *);
(bfd *);
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_swap_symbol_in
(bfd *, const void *, const void *, Elf_Internal_Sym *);
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 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);
/* 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.
(struct bfd_link_info *, struct elf_link_hash_entry *,
struct elf_dyn_relocs **, unsigned int, unsigned int);
+extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *);
+extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *);
+
+extern bfd_vma elf64_r_info (bfd_vma, bfd_vma);
+extern bfd_vma elf64_r_sym (bfd_vma);
+extern bfd_vma elf32_r_info (bfd_vma, bfd_vma);
+extern bfd_vma elf32_r_sym (bfd_vma);
+
/* Large common section. */
extern asection _bfd_elf_large_com_section;
return FALSE; \
warned = TRUE; \
} \
+ (void) unresolved_reloc; \
+ (void) warned; \
} \
while (0)
+/* This macro is to avoid lots of duplicated code in the body of the
+ loop over relocations in xxx_relocate_section() in the various
+ elfxx-xxxx.c files.
+
+ Handle relocations against symbols from removed linkonce sections,
+ or sections discarded by a linker script. When doing a relocatable
+ link, we remove such relocations. Otherwise, we just want the
+ section contents zeroed and avoid any special processing. */
+#define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
+ rel, relend, howto, contents) \
+ { \
+ _bfd_clear_contents (howto, input_bfd, input_section, \
+ contents + rel->r_offset); \
+ \
+ if (info->relocatable \
+ && (input_section->flags & SEC_DEBUGGING)) \
+ { \
+ /* Only remove relocations in debug sections since other \
+ sections may require relocations. */ \
+ Elf_Internal_Shdr *rel_hdr; \
+ \
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
+ \
+ /* Avoid empty output section. */ \
+ if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
+ { \
+ rel_hdr->sh_size -= rel_hdr->sh_entsize; \
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
+ rel_hdr->sh_size -= rel_hdr->sh_entsize; \
+ \
+ memmove (rel, rel + 1, (relend - rel - 1) * sizeof (*rel)); \
+ \
+ input_section->reloc_count--; \
+ relend--; \
+ rel--; \
+ continue; \
+ } \
+ } \
+ \
+ rel->r_info = 0; \
+ rel->r_addend = 0; \
+ continue; \
+ }
+
/* Will a symbol be bound to the the definition within the shared
- library, if any. */
+ library, if any. A unique symbol can never be bound locally. */
#define SYMBOLIC_BIND(INFO, H) \
- ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))
+ (!(H)->unique_global \
+ && ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic)))
#endif /* _LIBELF_H_ */
projects / binutils-gdb.git / blobdiff