X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf-bfd.h;h=5af46dcf5d39b4dd28d53f8975f27d9d3cbf600f;hb=fd885f3a4d85dc33d794ca359ea91f31e3082717;hp=0527bbd38a0788102f9c46221b04b718bb24deb0;hpb=7dc98aeaf1f3fe256e284347a41f1c150955c37d;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 0527bbd38a..5af46dcf5d 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -1,6 +1,6 @@ /* 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, 2009, 2010 + 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. Written by Cygnus Support. @@ -153,6 +153,9 @@ struct elf_link_hash_entry /* 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; @@ -229,11 +232,7 @@ struct elf_link_hash_entry }; /* Will references to this symbol always reference the symbol - in this object? STV_PROTECTED is excluded from the visibility test - here so that function pointer comparisons work properly. Since - function symbols not defined in an app are set to their .plt entry, - it's necessary for shared libs to also reference the .plt even - though the symbol is really local to the shared lib. */ + in this object? */ #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ _bfd_elf_symbol_refs_local_p (H, INFO, 0) @@ -429,6 +428,9 @@ enum elf_target_id TIC6X_ELF_DATA, X86_64_ELF_DATA, XTENSA_ELF_DATA, + XGATE_ELF_DATA, + TILEGX_ELF_DATA, + TILEPRO_ELF_DATA, GENERIC_ELF_DATA }; @@ -713,6 +715,10 @@ struct elf_backend_data /* The BFD flags applied to sections created for dynamic linking. */ flagword dynamic_sec_flags; + /* Architecture-specific data for this backend. + This is actually a pointer to some type like struct elf_ARCH_data. */ + const void *arch_data; + /* A function to translate an ELF RELA relocation to a BFD arelent structure. */ void (*elf_info_to_howto) @@ -1111,6 +1117,11 @@ struct elf_backend_data char *(*elf_backend_write_core_note) (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); + /* This function, if defined, is called to convert target-specific + section flag names into hex values. */ + flagword (*elf_backend_lookup_section_flags_hook) + (char *); + /* This function returns class of a reloc type. */ enum elf_reloc_type_class (*elf_backend_reloc_type_class) (const Elf_Internal_Rela *); @@ -1211,6 +1222,11 @@ struct elf_backend_data /* Return TRUE if type is a function symbol type. */ bfd_boolean (*is_function_type) (unsigned int type); + /* Return TRUE if symbol may be a function. Set *CODE_SEC and *CODE_VAL + to the function's entry point. */ + bfd_boolean (*maybe_function_sym) (const asymbol *sym, + asection **code_sec, bfd_vma *code_off); + /* Used to handle bad SHF_LINK_ORDER input. */ bfd_error_handler_type link_order_error_handler; @@ -1256,6 +1272,10 @@ struct elf_backend_data 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; @@ -1399,14 +1419,14 @@ struct bfd_elf_section_data void *sec_info; }; -#define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) +#define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) -#define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) -#define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) -#define elf_group_name(sec) (elf_section_data(sec)->group.name) -#define elf_group_id(sec) (elf_section_data(sec)->group.id) -#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_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) +#define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) +#define elf_group_name(sec) (elf_section_data(sec)->group.name) +#define elf_group_id(sec) (elf_section_data(sec)->group.id) +#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 xvec_get_elf_backend_data(xvec) \ @@ -1469,6 +1489,15 @@ enum 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. */ @@ -1534,7 +1563,7 @@ struct elf_obj_tdata const char *dt_name; /* The linker emulation needs to know what audit libs - are used by a dynamic object. */ + are used by a dynamic object. */ const char *dt_audit; /* Records the result of `get_program_header_size'. */ @@ -1626,10 +1655,15 @@ struct elf_obj_tdata 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. */ @@ -1773,14 +1807,13 @@ extern bfd_boolean _bfd_elf_match_sections_by_type (bfd *, const asection *, bfd *, const asection *); extern bfd_boolean bfd_elf_is_group_section (bfd *, const struct bfd_section *); -extern void _bfd_elf_section_already_linked - (bfd *, struct bfd_section *, struct bfd_link_info *); +extern bfd_boolean _bfd_elf_section_already_linked + (bfd *, asection *, struct bfd_link_info *); extern void bfd_elf_set_group_contents (bfd *, asection *, void *); extern asection *_bfd_elf_check_kept_section (asection *, struct bfd_link_info *); -extern void _bfd_elf_link_just_syms - (asection *, struct bfd_link_info *); +#define _bfd_elf_link_just_syms _bfd_generic_link_just_syms 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 @@ -1868,7 +1901,7 @@ extern bfd_boolean bfd_section_from_phdr extern int _bfd_elf_symbol_from_bfd_symbol (bfd *, asymbol **); -extern Elf_Internal_Sym *bfd_sym_from_r_symndx +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); @@ -2104,9 +2137,6 @@ extern unsigned int _bfd_elf_common_section_index extern asection *_bfd_elf_common_section (asection *); -extern void _bfd_dwarf2_cleanup_debug_info - (bfd *); - extern bfd_vma _bfd_elf_default_got_elt_size (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, unsigned long); @@ -2152,6 +2182,9 @@ extern bfd_boolean _bfd_elf_gc_mark_fdes extern bfd_boolean _bfd_elf_gc_mark (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn); +extern bfd_boolean _bfd_elf_gc_mark_extra_sections + (struct bfd_link_info *, elf_gc_mark_hook_fn); + extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets (bfd *, struct bfd_link_info *); @@ -2169,8 +2202,14 @@ extern bfd_boolean _bfd_elf_map_sections_to_segments extern bfd_boolean _bfd_elf_is_function_type (unsigned int); +extern bfd_boolean _bfd_elf_maybe_function_sym (const asymbol *, + asection **, bfd_vma *); + extern int bfd_elf_get_default_section_type (flagword); +extern void bfd_elf_lookup_section_flags + (struct bfd_link_info *, struct flag_info *); + extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section (bfd * abfd, asection * section); @@ -2203,6 +2242,12 @@ extern char *elfcore_write_s390_ctrs (bfd *, char *, int *, const void *, int); extern char *elfcore_write_s390_prefix (bfd *, char *, int *, const void *, int); +extern char *elfcore_write_s390_last_break + (bfd *, char *, int *, const void *, int); +extern char *elfcore_write_s390_system_call + (bfd *, char *, int *, const void *, int); +extern char *elfcore_write_arm_vfp + (bfd *, char *, int *, const void *, int); extern char *elfcore_write_lwpstatus (bfd *, char *, int *, long, int, const void *); extern char *elfcore_write_register_note @@ -2235,9 +2280,11 @@ extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *); 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 +/* The linker may need 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 @@ -2266,6 +2313,14 @@ 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); +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; @@ -2347,14 +2402,19 @@ extern asection _bfd_elf_large_com_section; /* 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) \ + rel, count, relend, \ + howto, index, contents) \ { \ + int i_; \ + _bfd_clear_contents (howto, input_bfd, input_section, \ + contents + rel[index].r_offset); \ + \ if (info->relocatable \ && (input_section->flags & SEC_DEBUGGING)) \ { \ @@ -2365,24 +2425,28 @@ extern asection _bfd_elf_large_com_section; rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ \ /* Avoid empty output section. */ \ - if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ + if (rel_hdr->sh_size > count * rel_hdr->sh_entsize) \ { \ - rel_hdr->sh_size -= rel_hdr->sh_entsize; \ + rel_hdr->sh_size -= count * rel_hdr->sh_entsize; \ rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ - rel_hdr->sh_size -= rel_hdr->sh_entsize; \ + rel_hdr->sh_size -= count * rel_hdr->sh_entsize; \ \ - memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \ + memmove (rel, rel + count, \ + (relend - rel - count) * sizeof (*rel)); \ \ - input_section->reloc_count--; \ - relend--; \ + input_section->reloc_count -= count; \ + relend -= count; \ rel--; \ continue; \ } \ } \ \ - _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); \ - rel->r_info = 0; \ - rel->r_addend = 0; \ + for (i_ = 0; i_ < count; i_++) \ + { \ + rel[i_].r_info = 0; \ + rel[i_].r_addend = 0; \ + } \ + rel += count - 1; \ continue; \ }