| /* 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 Free Software Foundation, Inc. |
| Written by Cygnus Support. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| #ifndef _LIBELF_H_ |
| #define _LIBELF_H_ 1 |
| |
| #include "elf/common.h" |
| #include "elf/internal.h" |
| #include "elf/external.h" |
| #include "bfdlink.h" |
| |
| /* The number of entries in a section is its size divided by the size |
| of a single entry. This is normally only applicable to reloc and |
| symbol table sections. */ |
| #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize) |
| |
| /* If size isn't specified as 64 or 32, NAME macro should fail. */ |
| #ifndef NAME |
| #if ARCH_SIZE == 64 |
| #define NAME(x, y) x ## 64 ## _ ## y |
| #endif |
| #if ARCH_SIZE == 32 |
| #define NAME(x, y) x ## 32 ## _ ## y |
| #endif |
| #endif |
| |
| #ifndef NAME |
| #define NAME(x, y) x ## NOSIZE ## _ ## y |
| #endif |
| |
| #define ElfNAME(X) NAME(Elf,X) |
| #define elfNAME(X) NAME(elf,X) |
| |
| /* Information held for an ELF symbol. The first field is the |
| corresponding asymbol. Every symbol is an ELF file is actually a |
| pointer to this structure, although it is often handled as a |
| pointer to an asymbol. */ |
| |
| typedef struct |
| { |
| /* The BFD symbol. */ |
| asymbol symbol; |
| /* ELF symbol information. */ |
| Elf_Internal_Sym internal_elf_sym; |
| /* Backend specific information. */ |
| union |
| { |
| unsigned int hppa_arg_reloc; |
| void *mips_extr; |
| void *any; |
| } |
| tc_data; |
| |
| /* Version information. This is from an Elf_Internal_Versym |
| structure in a SHT_GNU_versym section. It is zero if there is no |
| version information. */ |
| unsigned short version; |
| |
| } elf_symbol_type; |
| |
| struct elf_strtab_hash; |
| struct got_entry; |
| struct plt_entry; |
| |
| /* ELF linker hash table entries. */ |
| |
| struct elf_link_hash_entry |
| { |
| 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. */ |
| long indx; |
| |
| /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
| -1 if this is not a dynamic symbol. */ |
| /* ??? Note that this is consistently used as a synonym for tests |
| against whether we can perform various simplifying transformations |
| to the code. (E.g. changing a pc-relative jump to a PLT entry |
| into a pc-relative jump to the target function.) That test, which |
| is often relatively complex, and someplaces wrong or incomplete, |
| should really be replaced by a predicate in elflink.c. |
| |
| End result: this field -1 does not indicate that the symbol is |
| not in the dynamic symbol table, but rather that the symbol is |
| not visible outside this DSO. */ |
| long dynindx; |
| |
| /* If this symbol requires an entry in the global offset table, the |
| processor specific backend uses this field to track usage and |
| final offset. Two schemes are supported: The first assumes that |
| a symbol may only have one GOT entry, and uses REFCOUNT until |
| size_dynamic_sections, at which point the contents of the .got is |
| fixed. Afterward, if OFFSET is -1, then the symbol does not |
| require a global offset table entry. The second scheme allows |
| multiple GOT entries per symbol, managed via a linked list |
| pointed to by GLIST. */ |
| union gotplt_union |
| { |
| bfd_signed_vma refcount; |
| bfd_vma offset; |
| struct got_entry *glist; |
| struct plt_entry *plist; |
| } got; |
| |
| /* Same, but tracks a procedure linkage table entry. */ |
| union gotplt_union plt; |
| |
| /* Symbol size. */ |
| bfd_size_type size; |
| |
| /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
| unsigned int type : 8; |
| |
| /* Symbol st_other value, symbol visibility. */ |
| unsigned int other : 8; |
| |
| /* Symbol is referenced by a non-shared object. */ |
| unsigned int ref_regular : 1; |
| /* Symbol is defined by a non-shared object. */ |
| unsigned int def_regular : 1; |
| /* Symbol is referenced by a shared object. */ |
| unsigned int ref_dynamic : 1; |
| /* Symbol is defined by a shared object. */ |
| unsigned int def_dynamic : 1; |
| /* Symbol has a non-weak reference from a non-shared object. */ |
| unsigned int ref_regular_nonweak : 1; |
| /* Dynamic symbol has been adjustd. */ |
| unsigned int dynamic_adjusted : 1; |
| /* Symbol needs a copy reloc. */ |
| unsigned int needs_copy : 1; |
| /* Symbol needs a procedure linkage table entry. */ |
| 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 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 |
| not currently set by all the backends. */ |
| unsigned int non_got_ref : 1; |
| /* Symbol has a definition in a shared object. |
| FIXME: There is no real need for this field if def_dynamic is never |
| cleared and all places that test def_dynamic also test def_regular. */ |
| unsigned int dynamic_def : 1; |
| /* Symbol is weak in all shared objects. */ |
| unsigned int dynamic_weak : 1; |
| /* Symbol is referenced with a relocation where C/C++ pointer equality |
| matters. */ |
| unsigned int pointer_equality_needed : 1; |
| |
| /* String table index in .dynstr if this is a dynamic symbol. */ |
| unsigned long dynstr_index; |
| |
| union |
| { |
| /* If this is a weak defined symbol from a dynamic object, this |
| field points to a defined symbol with the same value, if there is |
| one. Otherwise it is NULL. */ |
| struct elf_link_hash_entry *weakdef; |
| |
| /* Hash value of the name computed using the ELF hash function. |
| Used part way through size_dynamic_sections, after we've finished |
| with weakdefs. */ |
| unsigned long elf_hash_value; |
| } u; |
| |
| /* Version information. */ |
| union |
| { |
| /* This field is used for a symbol which is not defined in a |
| regular object. It points to the version information read in |
| from the dynamic object. */ |
| Elf_Internal_Verdef *verdef; |
| /* This field is used for a symbol which is defined in a regular |
| object. It is set up in size_dynamic_sections. It points to |
| the version information we should write out for this symbol. */ |
| struct bfd_elf_version_tree *vertree; |
| } verinfo; |
| |
| struct |
| { |
| /* Virtual table entry use information. This array is nominally of size |
| size/sizeof(target_void_pointer), though we have to be able to assume |
| and track a size while the symbol is still undefined. It is indexed |
| via offset/sizeof(target_void_pointer). */ |
| size_t size; |
| bfd_boolean *used; |
| |
| /* Virtual table derivation info. */ |
| struct elf_link_hash_entry *parent; |
| } *vtable; |
| }; |
| |
| /* 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. */ |
| #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
| _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
| |
| /* Will _calls_ to this symbol always call the version in this object? */ |
| #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
| _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
| |
| /* Common symbols that are turned into definitions don't have the |
| DEF_REGULAR flag set, so they might appear to be undefined. */ |
| #define ELF_COMMON_DEF_P(H) \ |
| (!(H)->def_regular \ |
| && !(H)->def_dynamic \ |
| && (H)->root.type == bfd_link_hash_defined) |
| |
| /* Records local symbols to be emitted in the dynamic symbol table. */ |
| |
| struct elf_link_local_dynamic_entry |
| { |
| struct elf_link_local_dynamic_entry *next; |
| |
| /* The input bfd this symbol came from. */ |
| bfd *input_bfd; |
| |
| /* The index of the local symbol being copied. */ |
| long input_indx; |
| |
| /* The index in the outgoing dynamic symbol table. */ |
| long dynindx; |
| |
| /* A copy of the input symbol. */ |
| Elf_Internal_Sym isym; |
| }; |
| |
| struct elf_link_loaded_list |
| { |
| struct elf_link_loaded_list *next; |
| bfd *abfd; |
| }; |
| |
| /* Structures used by the eh_frame optimization code. */ |
| struct eh_cie_fde |
| { |
| /* For FDEs, this points to the CIE used. */ |
| struct eh_cie_fde *cie_inf; |
| unsigned int size; |
| unsigned int offset; |
| unsigned int new_offset; |
| unsigned char fde_encoding; |
| unsigned char lsda_encoding; |
| unsigned char lsda_offset; |
| unsigned int cie : 1; |
| unsigned int removed : 1; |
| unsigned int add_augmentation_size : 1; |
| unsigned int add_fde_encoding : 1; |
| unsigned int make_relative : 1; |
| 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; |
| struct eh_cie_fde entry[1]; |
| }; |
| |
| struct eh_frame_array_ent |
| { |
| bfd_vma initial_loc; |
| bfd_vma fde; |
| }; |
| |
| struct htab; |
| |
| struct eh_frame_hdr_info |
| { |
| struct htab *cies; |
| asection *hdr_sec; |
| unsigned int fde_count, array_count; |
| struct eh_frame_array_ent *array; |
| /* 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; |
| bfd_boolean offsets_adjusted; |
| }; |
| |
| /* ELF linker hash table. */ |
| |
| struct elf_link_hash_table |
| { |
| struct bfd_link_hash_table root; |
| |
| /* Whether we have created the special dynamic sections required |
| 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. */ |
| bfd *dynobj; |
| |
| /* The value to use when initialising got.refcount/offset and |
| plt.refcount/offset in an elf_link_hash_entry. Set to zero when |
| the values are refcounts. Set to init_got_offset/init_plt_offset |
| in size_dynamic_sections when the values may be offsets. */ |
| union gotplt_union init_got_refcount; |
| union gotplt_union init_plt_refcount; |
| |
| /* The value to use for got.refcount/offset and plt.refcount/offset |
| when the values may be offsets. Normally (bfd_vma) -1. */ |
| 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. */ |
| bfd_size_type dynsymcount; |
| |
| /* The string table of dynamic symbols, which becomes the .dynstr |
| section. */ |
| struct elf_strtab_hash *dynstr; |
| |
| /* 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; |
| |
| /* A linked list of DT_NEEDED names found in dynamic objects |
| 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; |
| |
| /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
| struct elf_link_hash_entry *hplt; |
| |
| /* A pointer to information used to merge SEC_MERGE sections. */ |
| void *merge_info; |
| |
| /* Used to link stabs in sections. */ |
| struct stab_info stab_info; |
| |
| /* Used by eh_frame code when editing .eh_frame. */ |
| struct eh_frame_hdr_info eh_info; |
| |
| /* A linked list of local symbols to be added to .dynsym. */ |
| struct elf_link_local_dynamic_entry *dynlocal; |
| |
| /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
| objects included in the link. */ |
| struct bfd_link_needed_list *runpath; |
| |
| /* Cached first output tls section and size of PT_TLS segment. */ |
| asection *tls_sec; |
| bfd_size_type tls_size; |
| |
| /* A linked list of BFD's loaded in the link. */ |
| struct elf_link_loaded_list *loaded; |
| }; |
| |
| /* Look up an entry in an ELF linker hash table. */ |
| |
| #define elf_link_hash_lookup(table, string, create, copy, follow) \ |
| ((struct elf_link_hash_entry *) \ |
| bfd_link_hash_lookup (&(table)->root, (string), (create), \ |
| (copy), (follow))) |
| |
| /* Traverse an ELF linker hash table. */ |
| |
| #define elf_link_hash_traverse(table, func, info) \ |
| (bfd_link_hash_traverse \ |
| (&(table)->root, \ |
| (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
| (info))) |
| |
| /* Get the ELF linker hash table from a link_info structure. */ |
| |
| #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) |
| |
| /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
| #define is_elf_hash_table(htab) \ |
| (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table) |
| |
| /* Used by bfd_section_from_r_symndx to cache a small number of local |
| symbol to section mappings. */ |
| #define LOCAL_SYM_CACHE_SIZE 32 |
| struct sym_sec_cache |
| { |
| bfd *abfd; |
| unsigned long indx[LOCAL_SYM_CACHE_SIZE]; |
| asection *sec[LOCAL_SYM_CACHE_SIZE]; |
| }; |
| |
| /* Constant information held for an ELF backend. */ |
| |
| struct elf_size_info { |
| unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; |
| unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; |
| |
| /* The size of entries in the .hash section. */ |
| unsigned char sizeof_hash_entry; |
| |
| /* The number of internal relocations to allocate per external |
| relocation entry. */ |
| unsigned char int_rels_per_ext_rel; |
| /* We use some fixed size arrays. This should be large enough to |
| handle all back-ends. */ |
| #define MAX_INT_RELS_PER_EXT_REL 3 |
| |
| unsigned char arch_size, log_file_align; |
| unsigned char elfclass, ev_current; |
| int (*write_out_phdrs) |
| (bfd *, const Elf_Internal_Phdr *, unsigned int); |
| bfd_boolean |
| (*write_shdrs_and_ehdr) (bfd *); |
| void (*write_relocs) |
| (bfd *, asection *, void *); |
| bfd_boolean (*swap_symbol_in) |
| (bfd *, const void *, const void *, Elf_Internal_Sym *); |
| void (*swap_symbol_out) |
| (bfd *, const Elf_Internal_Sym *, void *, void *); |
| bfd_boolean (*slurp_reloc_table) |
| (bfd *, asection *, asymbol **, bfd_boolean); |
| long (*slurp_symbol_table) |
| (bfd *, asymbol **, bfd_boolean); |
| void (*swap_dyn_in) |
| (bfd *, const void *, Elf_Internal_Dyn *); |
| void (*swap_dyn_out) |
| (bfd *, const Elf_Internal_Dyn *, void *); |
| |
| /* This function is called to swap in a REL relocation. If an |
| external relocation corresponds to more than one internal |
| relocation, then all relocations are swapped in at once. */ |
| void (*swap_reloc_in) |
| (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| |
| /* This function is called to swap out a REL relocation. */ |
| void (*swap_reloc_out) |
| (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| |
| /* This function is called to swap in a RELA relocation. If an |
| external relocation corresponds to more than one internal |
| relocation, then all relocations are swapped in at once. */ |
| void (*swap_reloca_in) |
| (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| |
| /* This function is called to swap out a RELA relocation. */ |
| void (*swap_reloca_out) |
| (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| }; |
| |
| #define elf_symbol_from(ABFD,S) \ |
| (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ |
| && (S)->the_bfd->tdata.elf_obj_data != 0) \ |
| ? (elf_symbol_type *) (S) \ |
| : 0) |
| |
| enum elf_reloc_type_class { |
| reloc_class_normal, |
| reloc_class_relative, |
| reloc_class_plt, |
| reloc_class_copy |
| }; |
| |
| struct elf_reloc_cookie |
| { |
| Elf_Internal_Rela *rels, *rel, *relend; |
| Elf_Internal_Sym *locsyms; |
| bfd *abfd; |
| size_t locsymcount; |
| size_t extsymoff; |
| struct elf_link_hash_entry **sym_hashes; |
| int r_sym_shift; |
| bfd_boolean bad_symtab; |
| }; |
| |
| /* The level of IRIX compatibility we're striving for. */ |
| |
| typedef enum { |
| ict_none, |
| ict_irix5, |
| ict_irix6 |
| } irix_compat_t; |
| |
| /* Mapping of ELF section names and types. */ |
| struct bfd_elf_special_section |
| { |
| const char *prefix; |
| 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. */ |
| int suffix_length; |
| int type; |
| int attr; |
| }; |
| |
| enum action_discarded |
| { |
| COMPLAIN = 1, |
| PRETEND = 2 |
| }; |
| |
| typedef asection * (*elf_gc_mark_hook_fn) |
| (asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
| struct elf_link_hash_entry *, Elf_Internal_Sym *); |
| |
| struct elf_backend_data |
| { |
| /* The architecture for this backend. */ |
| enum bfd_architecture arch; |
| |
| /* The ELF machine code (EM_xxxx) for this backend. */ |
| int elf_machine_code; |
| |
| /* EI_OSABI. */ |
| int elf_osabi; |
| |
| /* The maximum page size for this backend. */ |
| bfd_vma maxpagesize; |
| |
| /* The minimum page size for this backend. An input object will not be |
| considered page aligned unless its sections are correctly aligned for |
| 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; |
| |
| /* A function to translate an ELF RELA relocation to a BFD arelent |
| structure. */ |
| void (*elf_info_to_howto) |
| (bfd *, arelent *, Elf_Internal_Rela *); |
| |
| /* A function to translate an ELF REL relocation to a BFD arelent |
| structure. */ |
| void (*elf_info_to_howto_rel) |
| (bfd *, arelent *, Elf_Internal_Rela *); |
| |
| /* A function to determine whether a symbol is global when |
| partitioning the symbol table into local and global symbols. |
| This should be NULL for most targets, in which case the correct |
| thing will be done. MIPS ELF, at least on the Irix 5, has |
| special requirements. */ |
| bfd_boolean (*elf_backend_sym_is_global) |
| (bfd *, asymbol *); |
| |
| /* The remaining functions are hooks which are called only if they |
| are not NULL. */ |
| |
| /* A function to permit a backend specific check on whether a |
| particular BFD format is relevant for an object file, and to |
| permit the backend to set any global information it wishes. When |
| this is called elf_elfheader is set, but anything else should be |
| used with caution. If this returns FALSE, the check_format |
| routine will return a bfd_error_wrong_format error. */ |
| bfd_boolean (*elf_backend_object_p) |
| (bfd *); |
| |
| /* A function to do additional symbol processing when reading the |
| ELF symbol table. This is where any processor-specific special |
| section indices are handled. */ |
| void (*elf_backend_symbol_processing) |
| (bfd *, asymbol *); |
| |
| /* A function to do additional symbol processing after reading the |
| entire ELF symbol table. */ |
| bfd_boolean (*elf_backend_symbol_table_processing) |
| (bfd *, elf_symbol_type *, unsigned int); |
| |
| /* A function to set the type of the info field. Processor-specific |
| types should be handled here. */ |
| int (*elf_backend_get_symbol_type) |
| (Elf_Internal_Sym *, int); |
| |
| /* A function to return the linker hash table entry of a symbol that |
| might be satisfied by an archive symbol. */ |
| struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup) |
| (bfd *, struct bfd_link_info *, const char *); |
| |
| /* Return true if local section symbols should have a non-null st_name. |
| NULL implies false. */ |
| bfd_boolean (*elf_backend_name_local_section_symbols) |
| (bfd *); |
| |
| /* A function to do additional processing on the ELF section header |
| just before writing it out. This is used to set the flags and |
| type fields for some sections, or to actually write out data for |
| unusual sections. */ |
| bfd_boolean (*elf_backend_section_processing) |
| (bfd *, Elf_Internal_Shdr *); |
| |
| /* A function to handle unusual section types when creating BFD |
| sections from ELF sections. */ |
| bfd_boolean (*elf_backend_section_from_shdr) |
| (bfd *, Elf_Internal_Shdr *, const char *, int); |
| |
| /* 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 *); |
| |
| /* A function that returns a struct containing ELF section flags and |
| type for the given BFD section. */ |
| const struct bfd_elf_special_section * (*get_sec_type_attr) |
| (bfd *, asection *); |
| |
| /* A function to handle unusual program segment types when creating BFD |
| sections from ELF program segments. */ |
| bfd_boolean (*elf_backend_section_from_phdr) |
| (bfd *, Elf_Internal_Phdr *, int, const char *); |
| |
| /* A function to set up the ELF section header for a BFD section in |
| preparation for writing it out. This is where the flags and type |
| fields are set for unusual sections. */ |
| bfd_boolean (*elf_backend_fake_sections) |
| (bfd *, Elf_Internal_Shdr *, asection *); |
| |
| /* A function to get the ELF section index for a BFD section. If |
| this returns TRUE, the section was found. If it is a normal ELF |
| section, *RETVAL should be left unchanged. If it is not a normal |
| ELF section *RETVAL should be set to the SHN_xxxx index. */ |
| bfd_boolean (*elf_backend_section_from_bfd_section) |
| (bfd *, asection *, int *retval); |
| |
| /* If this field is not NULL, it is called by the add_symbols phase |
| of a link just before adding a symbol to the global linker hash |
| table. It may modify any of the fields as it wishes. If *NAME |
| is set to NULL, the symbol will be skipped rather than being |
| added to the hash table. This function is responsible for |
| handling all processor dependent symbol bindings and section |
| indices, and must set at least *FLAGS and *SEC for each processor |
| dependent case; failure to do so will cause a link error. */ |
| bfd_boolean (*elf_add_symbol_hook) |
| (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
| const char **name, flagword *flags, asection **sec, bfd_vma *value); |
| |
| /* If this field is not NULL, it is called by the elf_link_output_sym |
| phase of a link for each symbol which will appear in the object file. */ |
| bfd_boolean (*elf_backend_link_output_symbol_hook) |
| (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
| asection *, struct elf_link_hash_entry *); |
| |
| /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend |
| linker the first time it encounters a dynamic object in the link. |
| This function must create any sections required for dynamic |
| linking. The ABFD argument is a dynamic object. The .interp, |
| .dynamic, .dynsym, .dynstr, and .hash functions have already been |
| created, and this function may modify the section flags if |
| desired. This function will normally create the .got and .plt |
| sections, but different backends have different requirements. */ |
| bfd_boolean (*elf_backend_create_dynamic_sections) |
| (bfd *abfd, struct bfd_link_info *info); |
| |
| /* When creating a shared library, determine whether to omit the |
| dynamic symbol for the section. */ |
| bfd_boolean (*elf_backend_omit_section_dynsym) |
| (bfd *output_bfd, struct bfd_link_info *info, asection *osec); |
| |
| /* The CHECK_RELOCS function is called by the add_symbols phase of |
| the ELF backend linker. It is called once for each section with |
| relocs of an object file, just after the symbols for the object |
| file have been added to the global linker hash table. The |
| function must look through the relocs and do any special handling |
| required. This generally means allocating space in the global |
| offset table, and perhaps allocating space for a reloc. The |
| relocs are always passed as Rela structures; if the section |
| actually uses Rel structures, the r_addend field will always be |
| zero. */ |
| bfd_boolean (*check_relocs) |
| (bfd *abfd, struct bfd_link_info *info, asection *o, |
| const Elf_Internal_Rela *relocs); |
| |
| /* The CHECK_DIRECTIVES function is called once per input file by |
| the add_symbols phase of the ELF backend linker. The function |
| must inspect the bfd and create any additional symbols according |
| to any custom directives in the bfd. */ |
| 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 |
| input files have been seen, but before the SIZE_DYNAMIC_SECTIONS |
| function has been called. The hash table entry should be |
| bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be |
| defined in a section from a dynamic object. Dynamic object |
| sections are not included in the final link, and this function is |
| responsible for changing the value to something which the rest of |
| the link can deal with. This will normally involve adding an |
| entry to the .plt or .got or some such section, and setting the |
| symbol to point to that. */ |
| bfd_boolean (*elf_backend_adjust_dynamic_symbol) |
| (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
| |
| /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker |
| after all the linker input files have been seen but before the |
| section sizes have been set. This is called after |
| ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ |
| bfd_boolean (*elf_backend_always_size_sections) |
| (bfd *output_bfd, struct bfd_link_info *info); |
| |
| /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend |
| linker after all the linker input files have been seen but before |
| the sections sizes have been set. This is called after |
| ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. |
| It is only called when linking against a dynamic object. It must |
| set the sizes of the dynamic sections, and may fill in their |
| contents as well. The generic ELF linker can handle the .dynsym, |
| .dynstr and .hash sections. This function must handle the |
| .interp section and any sections created by the |
| CREATE_DYNAMIC_SECTIONS entry point. */ |
| 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. |
| |
| The relocs are always passed as Rela structures; if the section |
| actually uses Rel structures, the r_addend field will always be |
| zero. |
| |
| This function is responsible for adjust the section contents as |
| necessary, and (if using Rela relocs and generating a |
| relocatable output file) adjusting the reloc addend as |
| necessary. |
| |
| This function does not have to worry about setting the reloc |
| address or the reloc symbol index. |
| |
| LOCAL_SYMS is a pointer to the swapped in local symbols. |
| |
| LOCAL_SECTIONS is an array giving the section in the input file |
| corresponding to the st_shndx field of each local symbol. |
| |
| The global hash table entry for the global symbols can be found |
| via elf_sym_hashes (input_bfd). |
| |
| When generating relocatable output, this function must handle |
| STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| going to be the section symbol corresponding to the output |
| section, which means that the addend must be adjusted |
| accordingly. */ |
| bfd_boolean (*elf_backend_relocate_section) |
| (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
| asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, |
| Elf_Internal_Sym *local_syms, asection **local_sections); |
| |
| /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend |
| linker just before it writes a symbol out to the .dynsym section. |
| The processor backend may make any required adjustment to the |
| symbol. It may also take the opportunity to set contents of the |
| dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on |
| all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called |
| on those symbols which are defined by a dynamic object. */ |
| bfd_boolean (*elf_backend_finish_dynamic_symbol) |
| (bfd *output_bfd, struct bfd_link_info *info, |
| struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); |
| |
| /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend |
| linker just before it writes all the dynamic sections out to the |
| output file. The FINISH_DYNAMIC_SYMBOL will have been called on |
| all dynamic symbols. */ |
| bfd_boolean (*elf_backend_finish_dynamic_sections) |
| (bfd *output_bfd, struct bfd_link_info *info); |
| |
| /* A function to do any beginning processing needed for the ELF file |
| before building the ELF headers and computing file positions. */ |
| void (*elf_backend_begin_write_processing) |
| (bfd *, struct bfd_link_info *); |
| |
| /* A function to do any final processing needed for the ELF file |
| before writing it out. The LINKER argument is TRUE if this BFD |
| was created by the ELF backend linker. */ |
| void (*elf_backend_final_write_processing) |
| (bfd *, bfd_boolean linker); |
| |
| /* This function is called by get_program_header_size. It should |
| 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 *, 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) |
| (struct elf_link_hash_entry *h, void *inf); |
| |
| /* This function is called during section gc to discover the section a |
| particular relocation refers to. */ |
| elf_gc_mark_hook_fn gc_mark_hook; |
| |
| /* This function, if defined, is called after the first gc marking pass |
| to allow the backend to mark additional sections. */ |
| bfd_boolean (*gc_mark_extra_sections) |
| (struct bfd_link_info *info, elf_gc_mark_hook_fn gc_mark_hook); |
| |
| /* This function, if defined, is called during the sweep phase of gc |
| in order that a backend might update any data structures it might |
| be maintaining. */ |
| bfd_boolean (*gc_sweep_hook) |
| (bfd *abfd, struct bfd_link_info *info, asection *o, |
| const Elf_Internal_Rela *relocs); |
| |
| /* 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) |
| (bfd *, struct bfd_link_info *); |
| |
| /* This function, if defined, prints a symbol to file and returns the |
| name of the symbol to be printed. It should return NULL to fall |
| back to default symbol printing. */ |
| const char *(*elf_backend_print_symbol_all) |
| (bfd *, void *, asymbol *); |
| |
| /* 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 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 *, |
| struct elf_link_hash_entry *)); |
| |
| /* 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 |
| newly created and plt/got refcounts and dynamic indices should not |
| be copied. */ |
| void (*elf_backend_copy_indirect_symbol) |
| (struct bfd_link_info *, struct elf_link_hash_entry *, |
| struct elf_link_hash_entry *); |
| |
| /* Modify any information related to dynamic linking such that the |
| symbol is not exported. */ |
| void (*elf_backend_hide_symbol) |
| (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
| |
| /* A function to do additional symbol fixup, called by |
| _bfd_elf_fix_symbol_flags. */ |
| bfd_boolean (*elf_backend_fixup_symbol) |
| (struct bfd_link_info *, struct elf_link_hash_entry *); |
| |
| /* Merge the backend specific symbol attribute. */ |
| void (*elf_backend_merge_symbol_attribute) |
| (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, |
| bfd_boolean); |
| |
| /* Decide whether an undefined symbol is special and can be ignored. |
| This is the case for OPTIONAL symbols on IRIX. */ |
| bfd_boolean (*elf_backend_ignore_undef_symbol) |
| (struct elf_link_hash_entry *); |
| |
| /* Emit relocations. Overrides default routine for emitting relocs, |
| except during a relocatable link, or if all relocs are being emitted. */ |
| bfd_boolean (*elf_backend_emit_relocs) |
| (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
| struct elf_link_hash_entry **); |
| |
| /* Count relocations. Not called for relocatable links |
| or if all relocs are being preserved in the output. */ |
| unsigned int (*elf_backend_count_relocs) |
| (asection *, Elf_Internal_Rela *); |
| |
| /* This function, if defined, is called when an NT_PRSTATUS note is found |
| in a core file. */ |
| bfd_boolean (*elf_backend_grok_prstatus) |
| (bfd *, Elf_Internal_Note *); |
| |
| /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO |
| note is found in a core file. */ |
| bfd_boolean (*elf_backend_grok_psinfo) |
| (bfd *, Elf_Internal_Note *); |
| |
| /* This function, if defined, is called to write a note to a corefile. */ |
| char *(*elf_backend_write_core_note) |
| (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); |
| |
| /* Functions to print VMAs. Special code to handle 64 bit ELF files. */ |
| void (* elf_backend_sprintf_vma) |
| (bfd *, char *, bfd_vma); |
| void (* elf_backend_fprintf_vma) |
| (bfd *, void *, bfd_vma); |
| |
| /* This function returns class of a reloc type. */ |
| enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
| (const Elf_Internal_Rela *); |
| |
| /* This function, if defined, removes information about discarded functions |
| from other sections which mention them. */ |
| bfd_boolean (*elf_backend_discard_info) |
| (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
| |
| /* This function, if defined, signals that the function above has removed |
| the discarded relocations for this section. */ |
| bfd_boolean (*elf_backend_ignore_discarded_relocs) |
| (asection *); |
| |
| /* What to do when ld finds relocations against symbols defined in |
| discarded sections. */ |
| unsigned int (*action_discarded) |
| (asection *); |
| |
| /* This function returns the width of FDE pointers in bytes, or 0 if |
| that can't be determined for some reason. The default definition |
| goes by the bfd's EI_CLASS. */ |
| unsigned int (*elf_backend_eh_frame_address_size) |
| (bfd *, asection *); |
| |
| /* These functions tell elf-eh-frame whether to attempt to turn |
| absolute or lsda encodings into pc-relative ones. The default |
| definition enables these transformations. */ |
| bfd_boolean (*elf_backend_can_make_relative_eh_frame) |
| (bfd *, struct bfd_link_info *, asection *); |
| bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame) |
| (bfd *, struct bfd_link_info *, asection *); |
| |
| /* This function returns an encoding after computing the encoded |
| value (and storing it in ENCODED) for the given OFFSET into OSEC, |
| to be stored in at LOC_OFFSET into the LOC_SEC input section. |
| The default definition chooses a 32-bit PC-relative encoding. */ |
| bfd_byte (*elf_backend_encode_eh_address) |
| (bfd *abfd, struct bfd_link_info *info, |
| asection *osec, bfd_vma offset, |
| asection *loc_sec, bfd_vma loc_offset, |
| bfd_vma *encoded); |
| |
| /* This function, if defined, may write out the given section. |
| Returns TRUE if it did so and FALSE if the caller should. */ |
| bfd_boolean (*elf_backend_write_section) |
| (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
| |
| /* The level of IRIX compatibility we're striving for. |
| MIPS ELF specific function. */ |
| irix_compat_t (*elf_backend_mips_irix_compat) |
| (bfd *); |
| |
| reloc_howto_type *(*elf_backend_mips_rtype_to_howto) |
| (unsigned int, bfd_boolean); |
| |
| /* The swapping table to use when dealing with ECOFF information. |
| Used for the MIPS ELF .mdebug section. */ |
| const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; |
| |
| /* This function implements `bfd_elf_bfd_from_remote_memory'; |
| see elf.c, elfcode.h. */ |
| bfd *(*elf_backend_bfd_from_remote_memory) |
| (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep, |
| int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, int len)); |
| |
| /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
| see elf.c. */ |
| bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); |
| |
| /* Is symbol defined in common section? */ |
| bfd_boolean (*common_definition) (Elf_Internal_Sym *); |
| |
| /* Return a common section index for section. */ |
| unsigned int (*common_section_index) (asection *); |
| |
| /* Return a common section for section. */ |
| asection *(*common_section) (asection *); |
| |
| /* Return TRUE if we can merge 2 definitions. */ |
| bfd_boolean (*merge_symbol) (struct bfd_link_info *, |
| struct elf_link_hash_entry **, |
| struct elf_link_hash_entry *, |
| Elf_Internal_Sym *, asection **, |
| bfd_vma *, unsigned int *, |
| bfd_boolean *, bfd_boolean *, |
| bfd_boolean *, bfd_boolean *, |
| bfd_boolean *, bfd_boolean *, |
| bfd_boolean *, bfd_boolean *, |
| bfd *, asection **, |
| bfd_boolean *, bfd_boolean *, |
| 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; |
| |
| /* Name of the PLT relocation section. */ |
| const char *relplt_name; |
| |
| /* Alternate EM_xxxx machine codes for this backend. */ |
| int elf_machine_alt1; |
| int elf_machine_alt2; |
| |
| const struct elf_size_info *s; |
| |
| /* An array of target specific special sections. */ |
| const struct bfd_elf_special_section *special_sections; |
| |
| /* The size in bytes of the header for the GOT. This includes the |
| so-called reserved entries on some systems. */ |
| bfd_vma got_header_size; |
| |
| /* 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 |
| section. */ |
| unsigned collect : 1; |
| |
| /* This is TRUE if the linker should ignore changes to the type of a |
| symbol. This is TRUE for MIPS ELF because some Irix 5 objects |
| record undefined functions as STT_OBJECT although the definitions |
| are STT_FUNC. */ |
| unsigned type_change_ok : 1; |
| |
| /* Whether the backend may use REL relocations. (Some backends use |
| both REL and RELA relocations, and this flag is set for those |
| backends.) */ |
| unsigned may_use_rel_p : 1; |
| |
| /* Whether the backend may use RELA relocations. (Some backends use |
| both REL and RELA relocations, and this flag is set for those |
| backends.) */ |
| unsigned may_use_rela_p : 1; |
| |
| /* Whether the default relocation type is RELA. If a backend with |
| this flag set wants REL relocations for a particular section, |
| it must note that explicitly. Similarly, if this flag is clear, |
| and the backend wants RELA relocations for a particular |
| section. */ |
| unsigned default_use_rela_p : 1; |
| |
| /* Set if RELA relocations for a relocatable link can be handled by |
| generic code. Backends that set this flag need do nothing in the |
| backend relocate_section routine for relocatable linking. */ |
| unsigned rela_normal : 1; |
| |
| /* TRUE if addresses "naturally" sign extend. This is used when |
| swapping in from Elf32 when BFD64. */ |
| unsigned sign_extend_vma : 1; |
| |
| unsigned want_got_plt : 1; |
| unsigned plt_readonly : 1; |
| unsigned want_plt_sym : 1; |
| unsigned plt_not_loaded : 1; |
| unsigned plt_alignment : 4; |
| unsigned can_gc_sections : 1; |
| unsigned can_refcount : 1; |
| unsigned want_got_sym : 1; |
| unsigned want_dynbss : 1; |
| |
| /* Targets which do not support physical addressing often require |
| that the p_paddr field in the section header to be set to zero. |
| This field indicates whether this behavior is required. */ |
| unsigned want_p_paddr_set_to_zero : 1; |
| |
| /* True if an object file lacking a .note.GNU-stack section |
| should be assumed to be requesting exec stack. At least one |
| other file in the link needs to have a .note.GNU-stack section |
| for a PT_GNU_STACK segment to be created. */ |
| unsigned default_execstack : 1; |
| }; |
| |
| /* Information stored for each BFD section in an ELF file. This |
| structure is allocated by elf_new_section_hook. */ |
| |
| struct bfd_elf_section_data |
| { |
| /* 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; |
| |
| /* 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 |
| no dynamic symbol for this section. */ |
| int dynindx; |
| |
| /* 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. */ |
| Elf_Internal_Rela *relocs; |
| |
| /* A pointer to a linked list tracking dynamic relocs copied for |
| local symbols. */ |
| void *local_dynrel; |
| |
| /* A pointer to the bfd section used for dynamic relocs. */ |
| asection *sreloc; |
| |
| union { |
| /* Group name, if this section is a member of a group. */ |
| const char *name; |
| |
| /* Group signature sym, if this is the SHT_GROUP section. */ |
| struct bfd_symbol *id; |
| } 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 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. */ |
| void *sec_info; |
| }; |
| |
| #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_sec_group(sec) (elf_section_data(sec)->sec_group) |
| |
| #define xvec_get_elf_backend_data(xvec) \ |
| ((struct elf_backend_data *) (xvec)->backend_data) |
| |
| #define get_elf_backend_data(abfd) \ |
| 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. */ |
| |
| struct elf_info_failed |
| { |
| bfd_boolean failed; |
| struct bfd_link_info *info; |
| struct bfd_elf_version_tree *verdefs; |
| }; |
| |
| /* This structure is used to pass information to |
| _bfd_elf_link_assign_sym_version. */ |
| |
| struct elf_assign_sym_version_info |
| { |
| /* Output BFD. */ |
| bfd *output_bfd; |
| /* General link information. */ |
| struct bfd_link_info *info; |
| /* Version tree. */ |
| struct bfd_elf_version_tree *verdefs; |
| /* Whether we had a failure. */ |
| bfd_boolean failed; |
| }; |
| |
| /* This structure is used to pass information to |
| _bfd_elf_link_find_version_dependencies. */ |
| |
| struct elf_find_verdep_info |
| { |
| /* Output BFD. */ |
| bfd *output_bfd; |
| /* General link information. */ |
| struct bfd_link_info *info; |
| /* The number of dependencies. */ |
| unsigned int vers; |
| /* Whether we had a failure. */ |
| bfd_boolean failed; |
| }; |
| |
| /* Some private data is stashed away for future use using the tdata pointer |
| in the bfd structure. */ |
| |
| struct elf_obj_tdata |
| { |
| Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ |
| Elf_Internal_Shdr **elf_sect_ptr; |
| Elf_Internal_Phdr *phdr; |
| struct elf_segment_map *segment_map; |
| struct elf_strtab_hash *strtab_ptr; |
| int num_locals; |
| int num_globals; |
| unsigned int num_elf_sections; /* elf_sect_ptr size */ |
| int num_section_syms; |
| asymbol **section_syms; /* STT_SECTION symbols for each section */ |
| Elf_Internal_Shdr symtab_hdr; |
| Elf_Internal_Shdr shstrtab_hdr; |
| Elf_Internal_Shdr strtab_hdr; |
| Elf_Internal_Shdr dynsymtab_hdr; |
| Elf_Internal_Shdr dynstrtab_hdr; |
| Elf_Internal_Shdr dynversym_hdr; |
| Elf_Internal_Shdr dynverref_hdr; |
| Elf_Internal_Shdr dynverdef_hdr; |
| Elf_Internal_Shdr symtab_shndx_hdr; |
| unsigned int symtab_section, shstrtab_section; |
| unsigned int strtab_section, dynsymtab_section; |
| unsigned int symtab_shndx_section; |
| unsigned int dynversym_section, dynverdef_section, dynverref_section; |
| file_ptr next_file_pos; |
| bfd_vma gp; /* The gp value */ |
| unsigned int gp_size; /* The gp size */ |
| |
| /* Information grabbed from an elf core file. */ |
| int core_signal; |
| int core_pid; |
| int core_lwpid; |
| char* core_program; |
| char* core_command; |
| |
| /* A mapping from external symbols to entries in the linker hash |
| table, used when linking. This is indexed by the symbol index |
| minus the sh_info field of the symbol table header. */ |
| struct elf_link_hash_entry **sym_hashes; |
| |
| /* Track usage and final offsets of GOT entries for local symbols. |
| This array is indexed by symbol index. Elements are used |
| identically to "got" in struct elf_link_hash_entry. */ |
| union |
| { |
| bfd_signed_vma *refcounts; |
| bfd_vma *offsets; |
| struct got_entry **ents; |
| } local_got; |
| |
| /* The linker ELF emulation code needs to let the backend ELF linker |
| know what filename should be used for a dynamic object if the |
| dynamic object is found using a search. The emulation code then |
| sometimes needs to know what name was actually used. Until the |
| file has been added to the linker symbol table, this field holds |
| the name the linker wants. After it has been added, it holds the |
| name actually used, which will be the DT_SONAME entry if there is |
| one. */ |
| const char *dt_name; |
| |
| /* Records the result of `get_program_header_size'. */ |
| bfd_size_type program_header_size; |
| |
| /* Used by find_nearest_line entry point. */ |
| void *line_info; |
| |
| /* Used by MIPS ELF find_nearest_line entry point. The structure |
| could be included directly in this one, but there's no point to |
| wasting the memory just for the infrequently called |
| find_nearest_line. */ |
| struct mips_elf_find_line *find_line_info; |
| |
| /* A place to stash dwarf1 info for this bfd. */ |
| struct dwarf1_debug *dwarf1_find_line_info; |
| |
| /* A place to stash dwarf2 info for this bfd. */ |
| void *dwarf2_find_line_info; |
| |
| /* An array of stub sections indexed by symbol number, used by the |
| 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. */ |
| asection *eh_frame_hdr; |
| |
| Elf_Internal_Shdr **group_sect_ptr; |
| int num_group; |
| |
| /* Number of symbol version definitions we are about to emit. */ |
| unsigned int cverdefs; |
| |
| /* Number of symbol version references we are about to emit. */ |
| unsigned int cverrefs; |
| |
| /* Segment flags for the PT_GNU_STACK segment. */ |
| unsigned int stack_flags; |
| |
| /* Should the PT_GNU_RELRO segment be emitted? */ |
| bfd_boolean relro; |
| |
| /* Symbol version definitions in external objects. */ |
| Elf_Internal_Verdef *verdef; |
| |
| /* Symbol version references to external objects. */ |
| Elf_Internal_Verneed *verref; |
| |
| /* The Irix 5 support uses two virtual sections, which represent |
| text/data symbols defined in dynamic objects. */ |
| asymbol *elf_data_symbol; |
| asymbol *elf_text_symbol; |
| asection *elf_data_section; |
| asection *elf_text_section; |
| |
| /* Whether a dyanmic object was specified normally on the linker |
| command line, or was specified when --as-needed was in effect, |
| or was found via a DT_NEEDED entry. */ |
| enum dynamic_lib_link_class dyn_lib_class; |
| |
| /* This is set to TRUE if the object was created by the backend |
| linker. */ |
| bfd_boolean linker; |
| |
| /* Irix 5 often screws up the symbol table, sorting local symbols |
| after global symbols. This flag is set if the symbol table in |
| this BFD appears to be screwed up. If it is, we ignore the |
| sh_info field in the symbol table header, and always read all the |
| symbols. */ |
| bfd_boolean bad_symtab; |
| |
| /* Used to determine if the e_flags field has been initialized */ |
| bfd_boolean flags_init; |
| |
| /* Symbol buffer. */ |
| void *symbuf; |
| }; |
| |
| #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) |
| #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
| #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) |
| #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
| #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr) |
| #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
| #define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section) |
| #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
| #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) |
| #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) |
| #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) |
| #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals) |
| #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals) |
| #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms) |
| #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms) |
| #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
| #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) |
| #define elf_gp(bfd) (elf_tdata(bfd) -> gp) |
| #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) |
| #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) |
| #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) |
| #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) |
| #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
| #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
| #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
| #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
| #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init) |
| |
| extern void _bfd_elf_swap_verdef_in |
| (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
| extern void _bfd_elf_swap_verdef_out |
| (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
| extern void _bfd_elf_swap_verdaux_in |
| (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
| extern void _bfd_elf_swap_verdaux_out |
| (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
| extern void _bfd_elf_swap_verneed_in |
| (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
| extern void _bfd_elf_swap_verneed_out |
| (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
| extern void _bfd_elf_swap_vernaux_in |
| (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
| extern void _bfd_elf_swap_vernaux_out |
| (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
| extern void _bfd_elf_swap_versym_in |
| (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
| extern void _bfd_elf_swap_versym_out |
| (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
| |
| extern int _bfd_elf_section_from_bfd_section |
| (bfd *, asection *); |
| extern char *bfd_elf_string_from_elf_section |
| (bfd *, unsigned, unsigned); |
| extern char *bfd_elf_get_str_section |
| (bfd *, unsigned); |
| extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
| (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
| Elf_External_Sym_Shndx *); |
| extern const char *bfd_elf_sym_name |
| (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *); |
| |
| extern bfd_boolean _bfd_elf_copy_private_bfd_data |
| (bfd *, bfd *); |
| extern bfd_boolean _bfd_elf_print_private_bfd_data |
| (bfd *, void *); |
| extern void bfd_elf_print_symbol |
| (bfd *, void *, asymbol *, bfd_print_symbol_type); |
| |
| extern void _bfd_elf_sprintf_vma |
| (bfd *, char *, bfd_vma); |
| extern void _bfd_elf_fprintf_vma |
| (bfd *, void *, bfd_vma); |
| |
| extern unsigned int _bfd_elf_eh_frame_address_size |
| (bfd *, asection *); |
| extern bfd_byte _bfd_elf_encode_eh_address |
| (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, |
| asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); |
| extern bfd_boolean _bfd_elf_can_make_relative |
| (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); |
| |
| extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
| (const Elf_Internal_Rela *); |
| extern bfd_vma _bfd_elf_rela_local_sym |
| (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
| extern bfd_vma _bfd_elf_rel_local_sym |
| (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
| extern bfd_vma _bfd_elf_section_offset |
| (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
| |
| 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 **); |
| extern bfd_boolean bfd_elf_mkobject |
| (bfd *); |
| extern bfd_boolean bfd_elf_mkcorefile |
| (bfd *); |
| extern Elf_Internal_Shdr *bfd_elf_find_section |
| (bfd *, char *); |
| extern bfd_boolean _bfd_elf_make_section_from_shdr |
| (bfd *, Elf_Internal_Shdr *, const char *, int); |
| extern bfd_boolean _bfd_elf_make_section_from_phdr |
| (bfd *, Elf_Internal_Phdr *, int, const char *); |
| extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
| (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
| extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
| (bfd *); |
| extern void _bfd_elf_link_hash_copy_indirect |
| (struct bfd_link_info *, struct elf_link_hash_entry *, |
| struct elf_link_hash_entry *); |
| extern void _bfd_elf_link_hash_hide_symbol |
| (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
| extern bfd_boolean _bfd_elf_link_hash_fixup_symbol |
| (struct bfd_link_info *, struct elf_link_hash_entry *); |
| extern bfd_boolean _bfd_elf_link_hash_table_init |
| (struct elf_link_hash_table *, bfd *, |
| struct bfd_hash_entry *(*) |
| (struct bfd_hash_entry *, struct bfd_hash_table *, const char *), |
| unsigned int); |
| extern bfd_boolean _bfd_elf_slurp_version_tables |
| (bfd *, bfd_boolean); |
| extern bfd_boolean _bfd_elf_merge_sections |
| (bfd *, struct bfd_link_info *); |
| 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 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 *); |
| extern bfd_boolean _bfd_elf_copy_private_header_data |
| (bfd *, bfd *); |
| extern bfd_boolean _bfd_elf_copy_private_symbol_data |
| (bfd *, asymbol *, bfd *, asymbol *); |
| #define _bfd_generic_init_private_section_data \ |
| _bfd_elf_init_private_section_data |
| extern bfd_boolean _bfd_elf_init_private_section_data |
| (bfd *, asection *, bfd *, asection *, struct bfd_link_info *); |
| extern bfd_boolean _bfd_elf_copy_private_section_data |
| (bfd *, asection *, bfd *, asection *); |
| extern bfd_boolean _bfd_elf_write_object_contents |
| (bfd *); |
| extern bfd_boolean _bfd_elf_write_corefile_contents |
| (bfd *); |
| extern bfd_boolean _bfd_elf_set_section_contents |
| (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
| extern long _bfd_elf_get_symtab_upper_bound |
| (bfd *); |
| extern long _bfd_elf_canonicalize_symtab |
| (bfd *, asymbol **); |
| extern long _bfd_elf_get_dynamic_symtab_upper_bound |
| (bfd *); |
| extern long _bfd_elf_canonicalize_dynamic_symtab |
| (bfd *, asymbol **); |
| extern long _bfd_elf_get_synthetic_symtab |
| (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
| extern long _bfd_elf_get_reloc_upper_bound |
| (bfd *, sec_ptr); |
| extern long _bfd_elf_canonicalize_reloc |
| (bfd *, sec_ptr, arelent **, asymbol **); |
| extern long _bfd_elf_get_dynamic_reloc_upper_bound |
| (bfd *); |
| extern long _bfd_elf_canonicalize_dynamic_reloc |
| (bfd *, arelent **, asymbol **); |
| extern asymbol *_bfd_elf_make_empty_symbol |
| (bfd *); |
| extern void _bfd_elf_get_symbol_info |
| (bfd *, asymbol *, symbol_info *); |
| extern bfd_boolean _bfd_elf_is_local_label_name |
| (bfd *, const char *); |
| extern alent *_bfd_elf_get_lineno |
| (bfd *, asymbol *); |
| extern bfd_boolean _bfd_elf_set_arch_mach |
| (bfd *, enum bfd_architecture, unsigned long); |
| extern bfd_boolean _bfd_elf_find_nearest_line |
| (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **, |
| unsigned int *); |
| extern bfd_boolean _bfd_elf_find_line |
| (bfd *, asymbol **, asymbol *, const char **, unsigned int *); |
| #define _bfd_generic_find_line _bfd_elf_find_line |
| extern bfd_boolean _bfd_elf_find_inliner_info |
| (bfd *, const char **, const char **, unsigned int *); |
| #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 *, struct bfd_link_info *); |
| 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); |
| 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 *, asection *); |
| |
| /* If the target doesn't have reloc handling written yet: */ |
| extern void _bfd_elf_no_info_to_howto |
| (bfd *, arelent *, Elf_Internal_Rela *); |
| |
| extern bfd_boolean bfd_section_from_shdr |
| (bfd *, unsigned int shindex); |
| extern bfd_boolean bfd_section_from_phdr |
| (bfd *, Elf_Internal_Phdr *, int); |
| |
| extern int _bfd_elf_symbol_from_bfd_symbol |
| (bfd *, asymbol **); |
| |
| extern asection *bfd_section_from_r_symndx |
| (bfd *, struct sym_sec_cache *, asection *, 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 bfd_size_type _bfd_elf_strtab_add |
| (struct elf_strtab_hash *, const char *, bfd_boolean); |
| extern void _bfd_elf_strtab_addref |
| (struct elf_strtab_hash *, bfd_size_type); |
| extern void _bfd_elf_strtab_delref |
| (struct elf_strtab_hash *, bfd_size_type); |
| extern void _bfd_elf_strtab_clear_all_refs |
| (struct elf_strtab_hash *); |
| 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); |
| 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_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_hdr |
| (bfd *, struct bfd_link_info *); |
| 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 *); |
| extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr |
| (bfd *, struct bfd_link_info *); |
| extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr |
| (struct bfd_link_info *); |
| |
| extern bfd_boolean _bfd_elf_merge_symbol |
| (bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
| asection **, bfd_vma *, unsigned int *, |
| 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 *, |
| bfd_boolean *, bfd_boolean); |
| |
| extern bfd_boolean _bfd_elf_export_symbol |
| (struct elf_link_hash_entry *, void *); |
| |
| extern bfd_boolean _bfd_elf_link_find_version_dependencies |
| (struct elf_link_hash_entry *, void *); |
| |
| extern bfd_boolean _bfd_elf_link_assign_sym_version |
| (struct elf_link_hash_entry *, void *); |
| |
| extern long _bfd_elf_link_lookup_local_dynindx |
| (struct bfd_link_info *, bfd *, long); |
| extern bfd_boolean _bfd_elf_compute_section_file_positions |
| (bfd *, struct bfd_link_info *); |
| extern void _bfd_elf_assign_file_positions_for_relocs |
| (bfd *); |
| extern file_ptr _bfd_elf_assign_file_position_for_section |
| (Elf_Internal_Shdr *, file_ptr, bfd_boolean); |
| |
| extern bfd_boolean _bfd_elf_validate_reloc |
| (bfd *, arelent *); |
| |
| extern bfd_boolean _bfd_elf_link_create_dynamic_sections |
| (bfd *, struct bfd_link_info *); |
| extern bfd_boolean _bfd_elf_link_omit_section_dynsym |
| (bfd *, struct bfd_link_info *, asection *); |
| 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 *); |
| 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); |
| extern char *_bfd_elfcore_strndup |
| (bfd *, char *, size_t); |
| |
| extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
| (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean); |
| |
| extern bfd_boolean _bfd_elf_link_size_reloc_section |
| (bfd *, Elf_Internal_Shdr *, asection *); |
| |
| extern bfd_boolean _bfd_elf_link_output_relocs |
| (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
| struct elf_link_hash_entry **); |
| |
| extern bfd_boolean _bfd_elf_fix_symbol_flags |
| (struct elf_link_hash_entry *, struct elf_info_failed *); |
| |
| extern bfd_boolean _bfd_elf_adjust_dynamic_symbol |
| (struct elf_link_hash_entry *, void *); |
| |
| extern bfd_boolean _bfd_elf_link_sec_merge_syms |
| (struct elf_link_hash_entry *, void *); |
| |
| extern bfd_boolean _bfd_elf_dynamic_symbol_p |
| (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
| |
| 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 *, asection *, struct bfd_link_info *); |
| |
| extern void bfd_elf_perform_complex_relocation |
| (bfd * output_bfd ATTRIBUTE_UNUSED, |
| struct bfd_link_info * info, |
| bfd * input_bfd, |
| asection * input_section, |
| bfd_byte * contents, |
| Elf_Internal_Rela * rel, |
| Elf_Internal_Sym * local_syms, |
| asection ** local_sections); |
| |
| extern bfd_boolean _bfd_elf_setup_sections |
| (bfd *); |
| |
| extern void _bfd_elf_set_osabi (bfd * , struct bfd_link_info *); |
| |
| extern const bfd_target *bfd_elf32_object_p |
| (bfd *); |
| extern const bfd_target *bfd_elf32_core_file_p |
| (bfd *); |
| extern char *bfd_elf32_core_file_failing_command |
| (bfd *); |
| extern int bfd_elf32_core_file_failing_signal |
| (bfd *); |
| extern bfd_boolean bfd_elf32_core_file_matches_executable_p |
| (bfd *, bfd *); |
| |
| 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 *); |
| extern void bfd_elf32_swap_reloc_in |
| (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| extern void bfd_elf32_swap_reloc_out |
| (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| extern void bfd_elf32_swap_reloca_in |
| (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| extern void bfd_elf32_swap_reloca_out |
| (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| extern void bfd_elf32_swap_phdr_in |
| (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
| extern void bfd_elf32_swap_phdr_out |
| (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
| extern void bfd_elf32_swap_dyn_in |
| (bfd *, const void *, Elf_Internal_Dyn *); |
| extern void bfd_elf32_swap_dyn_out |
| (bfd *, const Elf_Internal_Dyn *, void *); |
| extern long bfd_elf32_slurp_symbol_table |
| (bfd *, asymbol **, bfd_boolean); |
| extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr |
| (bfd *); |
| extern int bfd_elf32_write_out_phdrs |
| (bfd *, const Elf_Internal_Phdr *, unsigned int); |
| extern void bfd_elf32_write_relocs |
| (bfd *, asection *, void *); |
| extern bfd_boolean bfd_elf32_slurp_reloc_table |
| (bfd *, asection *, asymbol **, bfd_boolean); |
| |
| extern const bfd_target *bfd_elf64_object_p |
| (bfd *); |
| extern const bfd_target *bfd_elf64_core_file_p |
| (bfd *); |
| extern char *bfd_elf64_core_file_failing_command |
| (bfd *); |
| extern int bfd_elf64_core_file_failing_signal |
| (bfd *); |
| extern bfd_boolean bfd_elf64_core_file_matches_executable_p |
| (bfd *, bfd *); |
| |
| 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 *); |
| extern void bfd_elf64_swap_reloc_in |
| (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| extern void bfd_elf64_swap_reloc_out |
| (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| extern void bfd_elf64_swap_reloca_in |
| (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| extern void bfd_elf64_swap_reloca_out |
| (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| extern void bfd_elf64_swap_phdr_in |
| (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
| extern void bfd_elf64_swap_phdr_out |
| (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
| extern void bfd_elf64_swap_dyn_in |
| (bfd *, const void *, Elf_Internal_Dyn *); |
| extern void bfd_elf64_swap_dyn_out |
| (bfd *, const Elf_Internal_Dyn *, void *); |
| extern long bfd_elf64_slurp_symbol_table |
| (bfd *, asymbol **, bfd_boolean); |
| extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr |
| (bfd *); |
| extern int bfd_elf64_write_out_phdrs |
| (bfd *, const Elf_Internal_Phdr *, unsigned int); |
| extern void bfd_elf64_write_relocs |
| (bfd *, asection *, void *); |
| extern bfd_boolean bfd_elf64_slurp_reloc_table |
| (bfd *, asection *, asymbol **, bfd_boolean); |
| |
| extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup |
| (bfd *, struct bfd_link_info *, const char *); |
| 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_link_record_dynamic_symbol |
| (struct bfd_link_info *, struct elf_link_hash_entry *); |
| |
| 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 *); |
| |
| extern bfd_boolean _bfd_elf_common_definition |
| (Elf_Internal_Sym *); |
| |
| extern unsigned int _bfd_elf_common_section_index |
| (asection *); |
| |
| extern asection *_bfd_elf_common_section |
| (asection *); |
| |
| extern void _bfd_dwarf2_cleanup_debug_info |
| (bfd *); |
| |
| extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
| (bfd *, arelent *, struct bfd_symbol *, void *, |
| asection *, bfd *, char **); |
| |
| extern bfd_boolean bfd_elf_final_link |
| (bfd *, struct bfd_link_info *); |
| |
| extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol |
| (struct elf_link_hash_entry *h, void *inf); |
| |
| extern bfd_boolean bfd_elf_gc_sections |
| (bfd *, struct bfd_link_info *); |
| |
| extern bfd_boolean bfd_elf_gc_record_vtinherit |
| (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
| |
| 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 *, |
| struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| |
| extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets |
| (bfd *, struct bfd_link_info *); |
| |
| extern bfd_boolean bfd_elf_gc_common_final_link |
| (bfd *, struct bfd_link_info *); |
| |
| extern bfd_boolean bfd_elf_reloc_symbol_deleted_p |
| (bfd_vma, void *); |
| |
| 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); |
| extern char *elfcore_write_prpsinfo |
| (bfd *, char *, int *, const char *, const char *); |
| extern char *elfcore_write_prstatus |
| (bfd *, char *, int *, long, int, const void *); |
| extern char * elfcore_write_pstatus |
| (bfd *, char *, int *, long, int, const void *); |
| extern char *elfcore_write_prfpreg |
| (bfd *, char *, int *, const void *, int); |
| extern char *elfcore_write_prxfpreg |
| (bfd *, char *, int *, const void *, int); |
| extern char *elfcore_write_lwpstatus |
| (bfd *, char *, int *, long, int, const void *); |
| |
| extern bfd *_bfd_elf32_bfd_from_remote_memory |
| (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep, |
| int (*target_read_memory) (bfd_vma, bfd_byte *, int)); |
| extern bfd *_bfd_elf64_bfd_from_remote_memory |
| (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep, |
| int (*target_read_memory) (bfd_vma, bfd_byte *, int)); |
| |
| /* Large common section. */ |
| extern asection _bfd_elf_large_com_section; |
| |
| /* SH ELF specific routine. */ |
| |
| extern bfd_boolean _sh_elf_set_mach_from_flags |
| (bfd *); |
| |
| /* 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 |
| about initializing any .plt and .got entries in relocate_section. */ |
| #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
| ((DYN) \ |
| && ((SHARED) || !(H)->forced_local) \ |
| && ((H)->dynindx != -1 || (H)->forced_local)) |
| |
| /* This macro is to avoid lots of duplicated code in the body |
| of xxx_relocate_section() in the various elfxx-xxxx.c files. */ |
| #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
| r_symndx, symtab_hdr, sym_hashes, \ |
| h, sec, relocation, \ |
| unresolved_reloc, warned) \ |
| do \ |
| { \ |
| /* It seems this can happen with erroneous or unsupported \ |
| input (mixing a.out and elf in an archive, for example.) */ \ |
| if (sym_hashes == NULL) \ |
| return FALSE; \ |
| \ |
| h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ |
| \ |
| while (h->root.type == bfd_link_hash_indirect \ |
| || h->root.type == bfd_link_hash_warning) \ |
| h = (struct elf_link_hash_entry *) h->root.u.i.link; \ |
| \ |
| warned = FALSE; \ |
| unresolved_reloc = FALSE; \ |
| relocation = 0; \ |
| if (h->root.type == bfd_link_hash_defined \ |
| || h->root.type == bfd_link_hash_defweak) \ |
| { \ |
| sec = h->root.u.def.section; \ |
| if (sec == NULL \ |
| || sec->output_section == NULL) \ |
| /* Set a flag that will be cleared later if we find a \ |
| relocation value for this symbol. output_section \ |
| is typically NULL for symbols satisfied by a shared \ |
| library. */ \ |
| unresolved_reloc = TRUE; \ |
| else \ |
| relocation = (h->root.u.def.value \ |
| + sec->output_section->vma \ |
| + sec->output_offset); \ |
| } \ |
| else if (h->root.type == bfd_link_hash_undefweak) \ |
| ; \ |
| else if (info->unresolved_syms_in_objects == RM_IGNORE \ |
| && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ |
| ; \ |
| else if (!info->relocatable) \ |
| { \ |
| 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; \ |
| warned = TRUE; \ |
| } \ |
| } \ |
| 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_ */ |