X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf-bfd.h;h=b0e902896ca1570ff471bc233885c548561073f9;hb=40b36307e31ea3e3606a1698f35d0b9769405615;hp=3fba1c228f0a9d57e3cf98727b969b167503b396;hpb=01f0fe5e0450edf168c1f612feb93cf588e4e7ea;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 3fba1c228f..b0e902896c 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -155,6 +155,8 @@ struct elf_link_hash_entry unsigned int hidden : 1; /* 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. */ + unsigned int dynamic : 1; /* Symbol was marked during garbage collection. */ unsigned int mark : 1; /* Symbol is referenced by a non-GOT/non-PLT relocation. This is @@ -259,31 +261,6 @@ struct elf_link_loaded_list }; /* Structures used by the eh_frame optimization code. */ -struct cie_header -{ - unsigned int length; - unsigned int id; -}; - -struct cie -{ - struct cie_header hdr; - unsigned char version; - char augmentation[20]; - bfd_vma code_align; - bfd_signed_vma data_align; - bfd_vma ra_column; - bfd_vma augmentation_size; - struct elf_link_hash_entry *personality; - unsigned char per_encoding; - unsigned char lsda_encoding; - unsigned char fde_encoding; - unsigned char initial_insn_length; - unsigned char make_relative; - unsigned char make_lsda_relative; - unsigned char initial_instructions[50]; -}; - struct eh_cie_fde { /* For FDEs, this points to the CIE used. */ @@ -302,12 +279,12 @@ struct eh_cie_fde unsigned int make_lsda_relative : 1; unsigned int need_lsda_relative : 1; unsigned int per_encoding_relative : 1; + unsigned int *set_loc; }; struct eh_frame_sec_info { unsigned int count; - unsigned int alloced; struct eh_cie_fde entry[1]; }; @@ -317,11 +294,11 @@ struct eh_frame_array_ent bfd_vma fde; }; +struct htab; + struct eh_frame_hdr_info { - struct cie last_cie; - asection *last_cie_sec; - struct eh_cie_fde *last_cie_inf; + struct htab *cies; asection *hdr_sec; unsigned int fde_count, array_count; struct eh_frame_array_ent *array; @@ -342,6 +319,10 @@ struct elf_link_hash_table when linking against or generating a shared object. */ bfd_boolean dynamic_sections_created; + /* True if this target has relocatable executables, so needs dynamic + section symbols. */ + bfd_boolean is_relocatable_executable; + /* The BFD used to hold special sections created by the linker. This will be the first BFD found which requires these sections to be created. */ @@ -375,6 +356,12 @@ struct elf_link_hash_table included in the link. */ struct bfd_link_needed_list *needed; + /* Sections in the output bfd that provides a section symbol + to be used by relocations emitted against local symbols. + Most targets will not use data_index_section. */ + asection *text_index_section; + asection *data_index_section; + /* The _GLOBAL_OFFSET_TABLE_ symbol. */ struct elf_link_hash_entry *hgot; @@ -403,10 +390,6 @@ struct elf_link_hash_table /* A linked list of BFD's loaded in the link. */ struct elf_link_loaded_list *loaded; - - /* True if this target has relocatable executables, so needs dynamic - section symbols. */ - bfd_boolean is_relocatable_executable; }; /* Look up an entry in an ELF linker hash table. */ @@ -466,7 +449,7 @@ struct elf_size_info { (*write_shdrs_and_ehdr) (bfd *); void (*write_relocs) (bfd *, asection *, void *); - void (*swap_symbol_in) + bfd_boolean (*swap_symbol_in) (bfd *, const void *, const void *, Elf_Internal_Sym *); void (*swap_symbol_out) (bfd *, const Elf_Internal_Sym *, void *, void *); @@ -571,6 +554,9 @@ struct elf_backend_data pages at least this large. May be smaller than maxpagesize. */ bfd_vma minpagesize; + /* The common page size for this backend. */ + bfd_vma commonpagesize; + /* The BFD flags applied to sections created for dynamic linking. */ flagword dynamic_sec_flags; @@ -725,6 +711,13 @@ struct elf_backend_data bfd_boolean (*check_directives) (bfd *abfd, struct bfd_link_info *info); + /* The AS_NEEDED_CLEANUP function is called once per --as-needed + input file that was not needed by the add_symbols phase of the + ELF backend linker. The function must undo any target specific + changes in the symbol hash table. */ + bfd_boolean (*as_needed_cleanup) + (bfd *abfd, struct bfd_link_info *info); + /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend linker for every symbol which is defined by a dynamic object and referenced by a regular object. This is called after all the @@ -760,6 +753,11 @@ struct elf_backend_data bfd_boolean (*elf_backend_size_dynamic_sections) (bfd *output_bfd, 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) + (bfd *output_bfd, struct bfd_link_info *info); + /* The RELOCATE_SECTION function is called by the ELF backend linker to handle the relocations for a section. @@ -826,13 +824,18 @@ struct elf_backend_data return the number of additional program segments which this BFD will need. It should return -1 on error. */ int (*elf_backend_additional_program_headers) - (bfd *); + (bfd *, struct bfd_link_info *); /* This function is called to modify an existing segment map in a backend specific fashion. */ bfd_boolean (*elf_backend_modify_segment_map) (bfd *, struct bfd_link_info *); + /* This function is called to modify program headers just before + they are written. */ + bfd_boolean (*elf_backend_modify_program_headers) + (bfd *, struct bfd_link_info *); + /* This function is called during section garbage collection to mark sections that define global symbols. */ bfd_boolean (*gc_mark_dynamic_ref) @@ -865,8 +868,16 @@ struct elf_backend_data /* This function, if defined, is called after all local symbols and global symbols converted to locals are emitted into the symtab - section. It allows the backend to emit special global symbols + section. It allows the backend to emit special local symbols not handled in the hash table. */ + bfd_boolean (*elf_backend_output_arch_local_syms) + (bfd *, struct bfd_link_info *, void *, + bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, + struct elf_link_hash_entry *)); + + /* This function, if defined, is called after all symbols are emitted + into the symtab section. It allows the backend to emit special + global symbols not handled in the hash table. */ bfd_boolean (*elf_backend_output_arch_syms) (bfd *, struct bfd_link_info *, void *, bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, @@ -1022,6 +1033,9 @@ struct elf_backend_data bfd_boolean *, bfd_boolean *, bfd *, asection **); + /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ + bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *); + /* Used to handle bad SHF_LINK_ORDER input. */ bfd_error_handler_type link_order_error_handler; @@ -1160,12 +1174,12 @@ struct bfd_elf_section_data struct bfd_symbol *id; } group; - /* Optional information about section group; NULL if it doesn't - belongs to any section group. */ + /* For a member of a group, points to the SHT_GROUP section. + NULL for the SHT_GROUP section itself and non-group sections. */ asection *sec_group; - /* A linked list of sections in the group. Circular when used by - the linker. */ + /* A linked list of member sections in the group. Circular when used by + the linker. For the SHT_GROUP section, points at first member. */ asection *next_in_group; /* A pointer used for various section optimizations. */ @@ -1188,8 +1202,11 @@ struct bfd_elf_section_data && (sec)->sec_info_type != ELF_INFO_TYPE_MERGE \ && (sec)->sec_info_type != ELF_INFO_TYPE_JUST_SYMS) +#define xvec_get_elf_backend_data(xvec) \ + ((struct elf_backend_data *) (xvec)->backend_data) + #define get_elf_backend_data(abfd) \ - ((const struct elf_backend_data *) (abfd)->xvec->backend_data) + 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. */ @@ -1317,6 +1334,7 @@ struct elf_obj_tdata MIPS ELF linker. FIXME: We should figure out some way to only include this field for a MIPS ELF target. */ asection **local_stubs; + asection **local_call_stubs; /* Used to determine if PT_GNU_EH_FRAME segment header should be created. */ @@ -1368,6 +1386,9 @@ struct elf_obj_tdata /* Used to determine if the e_flags field has been initialized */ bfd_boolean flags_init; + + /* Symbol buffer. */ + Elf_Internal_Sym *symbuf; }; #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) @@ -1462,6 +1483,8 @@ extern bfd_vma _bfd_elf_section_offset extern unsigned long bfd_elf_hash (const char *); +extern unsigned long bfd_elf_gnu_hash + (const char *); extern bfd_reloc_status_type bfd_elf_generic_reloc (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); @@ -1500,11 +1523,11 @@ extern bfd_boolean _bfd_elf_match_sections_by_type extern bfd_boolean bfd_elf_is_group_section (bfd *, const struct bfd_section *); extern void _bfd_elf_section_already_linked - (bfd *, struct bfd_section *); + (bfd *, struct bfd_section *, struct bfd_link_info *); extern void bfd_elf_set_group_contents (bfd *, asection *, void *); extern asection *_bfd_elf_check_kept_section - (asection *); + (asection *, struct bfd_link_info *); extern void _bfd_elf_link_just_syms (asection *, struct bfd_link_info *); extern bfd_boolean _bfd_elf_copy_private_header_data @@ -1562,7 +1585,7 @@ extern bfd_boolean _bfd_elf_find_inliner_info #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol extern int _bfd_elf_sizeof_headers - (bfd *, bfd_boolean); + (bfd *, struct bfd_link_info *); extern bfd_boolean _bfd_elf_new_section_hook (bfd *, asection *); extern bfd_boolean _bfd_elf_init_reloc_shdr @@ -1632,6 +1655,8 @@ extern bfd_boolean _bfd_elf_merge_symbol struct elf_link_hash_entry **, bfd_boolean *, bfd_boolean *, bfd_boolean *, bfd_boolean *); +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 *, @@ -1668,6 +1693,10 @@ extern bfd_boolean _bfd_elf_create_got_section (bfd *, struct bfd_link_info *); 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 + (bfd *, struct bfd_link_info *); +extern void _bfd_elf_init_2_index_sections + (bfd *, struct bfd_link_info *); extern bfd_boolean _bfd_elfcore_make_pseudosection (bfd *, char *, size_t, ufile_ptr); @@ -1700,7 +1729,7 @@ extern bfd_boolean _bfd_elf_symbol_refs_local_p (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); extern bfd_boolean bfd_elf_match_symbols_in_sections - (asection *sec1, asection *sec2); + (asection *, asection *, struct bfd_link_info *); extern bfd_boolean _bfd_elf_setup_sections (bfd *); @@ -1716,7 +1745,7 @@ extern int bfd_elf32_core_file_failing_signal extern bfd_boolean bfd_elf32_core_file_matches_executable_p (bfd *, bfd *); -extern void bfd_elf32_swap_symbol_in +extern bfd_boolean bfd_elf32_swap_symbol_in (bfd *, const void *, const void *, Elf_Internal_Sym *); extern void bfd_elf32_swap_symbol_out (bfd *, const Elf_Internal_Sym *, void *, void *); @@ -1758,7 +1787,7 @@ extern int bfd_elf64_core_file_failing_signal extern bfd_boolean bfd_elf64_core_file_matches_executable_p (bfd *, bfd *); -extern void bfd_elf64_swap_symbol_in +extern bfd_boolean bfd_elf64_swap_symbol_in (bfd *, const void *, const void *, Elf_Internal_Sym *); extern void bfd_elf64_swap_symbol_out (bfd *, const Elf_Internal_Sym *, void *, void *); @@ -1802,6 +1831,10 @@ 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 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 *); @@ -1836,6 +1869,10 @@ extern bfd_boolean bfd_elf_gc_record_vtinherit extern bfd_boolean bfd_elf_gc_record_vtentry (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); +extern asection *_bfd_elf_gc_mark_hook + (asection *, struct bfd_link_info *, Elf_Internal_Rela *, + struct elf_link_hash_entry *, Elf_Internal_Sym *); + extern bfd_boolean _bfd_elf_gc_mark (struct bfd_link_info *, asection *, asection * (*) (asection *, struct bfd_link_info *, Elf_Internal_Rela *, @@ -1850,10 +1887,12 @@ extern bfd_boolean bfd_elf_gc_common_final_link extern bfd_boolean bfd_elf_reloc_symbol_deleted_p (bfd_vma, void *); -extern struct elf_segment_map * -_bfd_elf_make_dynamic_segment +extern struct elf_segment_map * _bfd_elf_make_dynamic_segment (bfd *, asection *); +extern bfd_boolean _bfd_elf_map_sections_to_segments + (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); @@ -1952,4 +1991,9 @@ extern bfd_boolean _sh_elf_set_mach_from_flags } \ while (0) +/* Will a symbol be bound to the the definition within the shared + library, if any. */ +#define SYMBOLIC_BIND(INFO, H) \ + ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic)) + #endif /* _LIBELF_H_ */