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Diffstat (limited to 'binutils-2.24/bfd/elf-bfd.h')
| -rw-r--r-- | binutils-2.24/bfd/elf-bfd.h | 2533 |
1 files changed, 0 insertions, 2533 deletions
diff --git a/binutils-2.24/bfd/elf-bfd.h b/binutils-2.24/bfd/elf-bfd.h deleted file mode 100644 index 6af1624e..00000000 --- a/binutils-2.24/bfd/elf-bfd.h +++ /dev/null @@ -1,2533 +0,0 @@ -/* BFD back-end data structures for ELF files. - Copyright 1992-2013 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 3 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/external.h" -#include "elf/internal.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. - PR 9934: It is possible to have relocations that do not refer to - symbols, thus it is also possible to have a relocation section in - an object file, but no symbol table. */ -#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0) - -/* 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; - -union gotplt_union - { - bfd_signed_vma refcount; - bfd_vma offset; - struct got_entry *glist; - struct plt_entry *plist; - }; - -struct elf_link_virtual_table_entry - { - /* 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; - }; - -/* 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 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; - - /* 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; - /* 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 (other than - the object in which it is defined). */ - 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 has a non-weak reference from a shared object. */ - unsigned int ref_dynamic_nonweak : 1; - /* Symbol is referenced with a relocation where C/C++ pointer equality - matters. */ - unsigned int pointer_equality_needed : 1; - /* Symbol is a unique global symbol. */ - unsigned int unique_global : 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 elf_link_virtual_table_entry *vtable; -}; - -/* Will references to this symbol always reference the symbol - in this object? */ -#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 -{ - union { - struct { - /* If REMOVED == 1, this is the CIE that the FDE originally used. - The CIE belongs to the same .eh_frame input section as the FDE. - - If REMOVED == 0, this is the CIE that we have chosen to use for - the output FDE. The CIE's REMOVED field is also 0, but the CIE - might belong to a different .eh_frame input section from the FDE. */ - struct eh_cie_fde *cie_inf; - struct eh_cie_fde *next_for_section; - } fde; - struct { - /* CIEs have three states: - - - REMOVED && !MERGED: Slated for removal because we haven't yet - proven that an FDE needs it. FULL_CIE, if nonnull, points to - more detailed information about the CIE. - - - REMOVED && MERGED: We have merged this CIE with MERGED_WITH, - which may not belong to the same input section. - - - !REMOVED: We have decided to keep this CIE. SEC is the - .eh_frame input section that contains the CIE. */ - union { - struct cie *full_cie; - struct eh_cie_fde *merged_with; - asection *sec; - } u; - - /* The offset of the personality data from the start of the CIE, - or 0 if the CIE doesn't have any. */ - unsigned int personality_offset : 8; - - /* True if we have marked relocations associated with this CIE. */ - unsigned int gc_mark : 1; - - /* True if we have decided to turn an absolute LSDA encoding into - a PC-relative one. */ - unsigned int make_lsda_relative : 1; - - /* True if we have decided to turn an absolute personality - encoding into a PC-relative one. */ - unsigned int make_per_encoding_relative : 1; - - /* True if the CIE contains personality data and if that - data uses a PC-relative encoding. Always true when - make_per_encoding_relative is. */ - unsigned int per_encoding_relative : 1; - - /* True if we need to add an 'R' (FDE encoding) entry to the - CIE's augmentation data. */ - unsigned int add_fde_encoding : 1; - - /* True if we have merged this CIE with another. */ - unsigned int merged : 1; - - /* Unused bits. */ - unsigned int pad1 : 18; - } cie; - } u; - unsigned int reloc_index; - unsigned int size; - unsigned int offset; - unsigned int new_offset; - unsigned int fde_encoding : 8; - unsigned int lsda_encoding : 8; - unsigned int lsda_offset : 8; - - /* True if this entry represents a CIE, false if it represents an FDE. */ - unsigned int cie : 1; - - /* True if this entry is currently marked for removal. */ - unsigned int removed : 1; - - /* True if we need to add a 'z' (augmentation size) entry to the CIE's - augmentation data, and an associated byte to each of the CIE's FDEs. */ - unsigned int add_augmentation_size : 1; - - /* True if we have decided to convert absolute FDE relocations into - relative ones. This applies to the first relocation in the FDE, - which is against the code that the FDE describes. */ - unsigned int make_relative : 1; - - /* Unused bits. */ - unsigned int pad1 : 4; - - unsigned int *set_loc; -}; - -struct eh_frame_sec_info -{ - unsigned int count; - struct cie *cies; - 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 we should try to merge CIEs between input sections. */ - bfd_boolean merge_cies; - /* TRUE if all .eh_frames have been parsd. */ - bfd_boolean parsed_eh_frames; - /* 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; -}; - -/* Enum used to identify target specific extensions to the elf_obj_tdata - and elf_link_hash_table structures. Note the enums deliberately start - from 1 so that we can detect an uninitialized field. The generic value - is last so that additions to this enum do not need to modify more than - one line. */ -enum elf_target_id -{ - AARCH64_ELF_DATA = 1, - ALPHA_ELF_DATA, - ARM_ELF_DATA, - AVR_ELF_DATA, - BFIN_ELF_DATA, - CRIS_ELF_DATA, - FRV_ELF_DATA, - HPPA32_ELF_DATA, - HPPA64_ELF_DATA, - I386_ELF_DATA, - IA64_ELF_DATA, - LM32_ELF_DATA, - M32R_ELF_DATA, - M68HC11_ELF_DATA, - M68K_ELF_DATA, - METAG_ELF_DATA, - MICROBLAZE_ELF_DATA, - MIPS_ELF_DATA, - MN10300_ELF_DATA, - NIOS2_ELF_DATA, - PPC32_ELF_DATA, - PPC64_ELF_DATA, - S390_ELF_DATA, - SH_ELF_DATA, - SPARC_ELF_DATA, - SPU_ELF_DATA, - TIC6X_ELF_DATA, - X86_64_ELF_DATA, - XTENSA_ELF_DATA, - XGATE_ELF_DATA, - TILEGX_ELF_DATA, - TILEPRO_ELF_DATA, - GENERIC_ELF_DATA -}; - -/* ELF linker hash table. */ - -struct elf_link_hash_table -{ - struct bfd_link_hash_table root; - - /* An identifier used to distinguish different target - specific extensions to this structure. */ - enum elf_target_id hash_table_id; - - /* 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; - - /* The _DYNAMIC symbol. */ - struct elf_link_hash_entry *hdynamic; - - /* 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; - - /* Short-cuts to get to dynamic linker sections. */ - asection *sgot; - asection *sgotplt; - asection *srelgot; - asection *splt; - asection *srelplt; - asection *igotplt; - asection *iplt; - asection *irelplt; - asection *irelifunc; -}; - -/* 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)) - -#define elf_hash_table_id(table) ((table) -> hash_table_id) - -/* 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_sym_from_r_symndx to cache a small number of local - symbols. */ -#define LOCAL_SYM_CACHE_SIZE 32 -struct sym_cache -{ - bfd *abfd; - unsigned long indx[LOCAL_SYM_CACHE_SIZE]; - Elf_Internal_Sym sym[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 *); - bfd_boolean (*checksum_contents) - (bfd * , void (*) (const void *, size_t, void *), void *); - 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, - reloc_class_ifunc -}; - -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; - bfd_vma 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; - - /* An identifier used to distinguish different target specific - extensions to elf_obj_tdata and elf_link_hash_table structures. */ - enum elf_target_id target_id; - - /* The ELF machine code (EM_xxxx) for this backend. */ - int elf_machine_code; - - /* 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; - - /* 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) - (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. - On error, this function returns 0. 1 is returned when the symbol - should be output, 2 is returned when the symbol should be discarded. */ - int (*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); - - /* Return TRUE if relocations of targets are compatible to the extent - that CHECK_RELOCS will properly process them. PR 4424. */ - bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *); - - /* 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 NOTICE_AS_NEEDED function is called as the linker is about to - handle an as-needed lib (ACT = notice_as_needed), and after the - linker has decided to keep the lib (ACT = notice_needed) or when - the lib is not needed (ACT = notice_not_needed). */ - bfd_boolean (*notice_as_needed) - (bfd *abfd, struct bfd_link_info *info, enum notice_asneeded_action act); - - /* 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. - - Returns FALSE on error, TRUE on success, 2 if successful and - relocations should be written for this section. */ - int (*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 before section garbage collection to - mark entry symbol sections. */ - void (*gc_keep) - (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 *, void *); - - /* 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 *, elf_gc_mark_hook_fn); - - /* 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 *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); - - /* 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); - - /* This function, if defined, will return a string containing the - name of a target-specific dynamic tag. */ - char *(*elf_backend_get_target_dtag) - (bfd_vma); - - /* 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) - (struct bfd_link_info *, asection *); - - /* 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, ...); - - /* 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 struct bfd_link_info *, const asection *, 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, - bfd_size_type 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 elf_link_hash_entry *, - const Elf_Internal_Sym *, asection **, - bfd_boolean, bfd_boolean, - bfd *, const asection *); - - /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ - bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *); - - /* Return TRUE if type is a function symbol type. */ - bfd_boolean (*is_function_type) (unsigned int type); - - /* If the ELF symbol SYM might be a function in SEC, return the - function size and set *CODE_OFF to the function's entry point, - otherwise return zero. */ - bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec, - bfd_vma *code_off); - - /* 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; - - /* The size of the GOT entry for the symbol pointed to by H if non-NULL, - otherwise by the local symbol with index SYMNDX in IBFD. */ - bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *, - struct elf_link_hash_entry *h, - bfd *ibfd, unsigned long symndx); - - /* The vendor name to use for a processor-standard attributes section. */ - const char *obj_attrs_vendor; - - /* The section name to use for a processor-standard attributes section. */ - const char *obj_attrs_section; - - /* Return 1, 2 or 3 to indicate what type of arguments a - processor-specific tag takes. */ - int (*obj_attrs_arg_type) (int); - - /* The section type to use for an attributes section. */ - unsigned int obj_attrs_section_type; - - /* This function determines the order in which any attributes are - written. It must be defined for input in the range - LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range - is used in order to make unity easy). The returned value is the - actual tag number to place in the input position. */ - int (*obj_attrs_order) (int); - - /* Handle merging unknown attributes; either warn and return TRUE, - or give an error and return FALSE. */ - bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int); - - /* This is non-zero if static TLS segments require a special alignment. */ - unsigned static_tls_alignment; - - /* Alignment for the PT_GNU_STACK segment. */ - unsigned stack_align; - - /* 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; - - /* True if PLT and copy relocations should be RELA by default. */ - unsigned rela_plts_and_copies_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 about reloc sections associated with a bfd_elf_section_data - structure. */ -struct bfd_elf_section_reloc_data -{ - /* The ELF header for the reloc section associated with this - section, if any. */ - Elf_Internal_Shdr *hdr; - /* The number of relocations currently assigned to HDR. */ - unsigned int count; - /* The ELF section number of the reloc section. Only used for an - output file. */ - int idx; - /* Used by the backend linker to store the symbol hash table entries - associated with relocs against global symbols. */ - struct elf_link_hash_entry **hashes; -}; - -/* Information stored for each BFD section in an ELF file. This - structure is allocated by elf_new_section_hook. */ - -struct bfd_elf_section_data -{ - /* The ELF header for this section. */ - Elf_Internal_Shdr this_hdr; - - /* INPUT_SECTION_FLAGS if specified in the linker script. */ - struct flag_info *section_flag_info; - - /* Information about the REL and RELA reloc sections associated - with this section, if any. */ - struct bfd_elf_section_reloc_data rel, rela; - - /* The ELF section number of this section. */ - int this_idx; - - /* 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; - - /* 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; - - /* The FDEs associated with this section. The u.fde.next_in_section - field acts as a chain pointer. */ - struct eh_cie_fde *fde_list; - - /* 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_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) \ - ((const struct elf_backend_data *) (xvec)->backend_data) - -#define get_elf_backend_data(abfd) \ - xvec_get_elf_backend_data ((abfd)->xvec) - -/* The least object attributes (within an attributes subsection) known - for any target. Some code assumes that the value 0 is not used and - the field for that attribute can instead be used as a marker to - indicate that attributes have been initialized. */ -#define LEAST_KNOWN_OBJ_ATTRIBUTE 2 - -/* The maximum number of known object attributes for any target. */ -#define NUM_KNOWN_OBJ_ATTRIBUTES 71 - -/* The value of an object attribute. The type indicates whether the attribute - holds and integer, a string, or both. It can also indicate that there can - be no default (i.e. all values must be written to file, even zero), and whether - it exists in bfd to begin with. */ - -typedef struct obj_attribute -{ -#define ATTR_TYPE_FLAG_INT_VAL (1 << 0) -#define ATTR_TYPE_FLAG_STR_VAL (1 << 1) -#define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2) -#define ATTR_TYPE_FLAG_EXIST (1 << 3) - -#define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL) -#define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL) -#define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT) -#define ATTR_TYPE_EXIST(TYPE) ((TYPE) & ATTR_TYPE_FLAG_EXIST) - - int type; - unsigned int i; - char *s; -} obj_attribute; - -typedef struct obj_attribute_list -{ - struct obj_attribute_list *next; - int tag; - obj_attribute attr; -} obj_attribute_list; - -/* Object attributes may either be defined by the processor ABI, index - OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific - (and possibly also processor-specific), index OBJ_ATTR_GNU. */ -#define OBJ_ATTR_PROC 0 -#define OBJ_ATTR_GNU 1 -#define OBJ_ATTR_FIRST OBJ_ATTR_PROC -#define OBJ_ATTR_LAST OBJ_ATTR_GNU - -/* The following object attribute tags are taken as generic, for all - targets and for "gnu" where there is no target standard. */ -enum -{ - Tag_NULL = 0, - Tag_File = 1, - Tag_Section = 2, - Tag_Symbol = 3, - 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]; -}; - -/* NT_GNU_BUILD_ID note type info for input BFDs. */ -struct elf_build_id -{ - size_t size; - bfd_byte data[1]; -}; - -/* tdata information grabbed from an elf core file. */ -struct core_elf_obj_tdata -{ - int signal; - int pid; - int lwpid; - char* program; - char* command; -}; - -/* Extra tdata information held for output ELF BFDs. */ -struct output_elf_obj_tdata -{ - struct elf_segment_map *seg_map; - struct elf_strtab_hash *strtab_ptr; - - /* STT_SECTION symbols for each section */ - asymbol **section_syms; - - /* Used to determine if PT_GNU_EH_FRAME segment header should be - created. */ - asection *eh_frame_hdr; - - /* NT_GNU_BUILD_ID note type info. */ - struct - { - bfd_boolean (*after_write_object_contents) (bfd *); - const char *style; - asection *sec; - } build_id; - - /* Records the result of `get_program_header_size'. */ - bfd_size_type program_header_size; - - /* Used when laying out sections. */ - file_ptr next_file_pos; - - int num_section_syms; - unsigned int shstrtab_section, strtab_section; - - /* Segment flags for the PT_GNU_STACK segment. */ - unsigned int stack_flags; - - /* This is set to TRUE if the object was created by the backend - linker. */ - bfd_boolean linker; - - /* Used to determine if the e_flags field has been initialized */ - bfd_boolean flags_init; -}; - -/* 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; - 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; - bfd_vma gp; /* The gp value */ - unsigned int gp_size; /* The gp size */ - unsigned int num_elf_sections; /* elf_sect_ptr size */ - - /* 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; - - /* The linker emulation needs to know what audit libs - are used by a dynamic object. */ - const char *dt_audit; - - /* Used by find_nearest_line entry point. */ - void *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; - - /* Stash away info for yet another find line/function variant. */ - void *elf_find_function_cache; - - /* 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; - - /* Symbol version definitions in external objects. */ - Elf_Internal_Verdef *verdef; - - /* Symbol version references to external objects. */ - Elf_Internal_Verneed *verref; - - /* A pointer to the .eh_frame section. */ - asection *eh_frame_section; - - /* Symbol buffer. */ - void *symbuf; - - obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES]; - obj_attribute_list *other_obj_attributes[2]; - - /* NT_GNU_BUILD_ID note type. */ - struct elf_build_id *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; - - Elf_Internal_Shdr **group_sect_ptr; - int num_group; - - unsigned int symtab_section, symtab_shndx_section, dynsymtab_section; - unsigned int dynversym_section, dynverdef_section, dynverref_section; - - /* An identifier used to distinguish different target - specific extensions to this structure. */ - enum elf_target_id object_id; - - /* 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; - - /* 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; - - /* True if the bfd contains symbols that have the STT_GNU_IFUNC - symbol type or STB_GNU_UNIQUE binding. Used to set the osabi - field in the ELF header structure. */ - bfd_boolean has_gnu_symbols; - - /* Information grabbed from an elf core file. */ - struct core_elf_obj_tdata *core; - - /* More information held for output ELF BFDs. */ - struct output_elf_obj_tdata *o; -}; - -#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) - -#define elf_object_id(bfd) (elf_tdata(bfd) -> object_id) -#define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size) -#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_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map) -#define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos) -#define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr) -#define elf_linker(bfd) (elf_tdata(bfd) -> o->linker) -#define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags) -#define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr) -#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) -#define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section) -#define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section) -#define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section) -#define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr) -#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_eh_frame_section(bfd) \ - (elf_tdata(bfd) -> eh_frame_section) -#define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms) -#define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->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_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit) -#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) -> o->flags_init) -#define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes) -#define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes) -#define elf_known_obj_attributes_proc(bfd) \ - (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC]) -#define elf_other_obj_attributes_proc(bfd) \ - (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC]) - -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 unsigned int _bfd_elf_section_from_bfd_section - (bfd *, asection *); -extern char *bfd_elf_string_from_elf_section - (bfd *, unsigned, 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 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 struct bfd_link_info *, const asection *, - 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_allocate_object - (bfd *, size_t, enum elf_target_id); -extern bfd_boolean bfd_elf_make_object - (bfd *); -extern bfd_boolean bfd_elf_mkcorefile - (bfd *); -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_table_free - (struct bfd_link_hash_table *); -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, enum elf_target_id); -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 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 *); -#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 - (struct bfd_link_info *); -extern bfd_boolean _bfd_elf_fixup_group_sections -(bfd *, asection *); -extern bfd_boolean _bfd_elf_copy_private_header_data - (bfd *, bfd *); -extern bfd_boolean _bfd_elf_copy_private_symbol_data - (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 asection * _bfd_elf_get_dynamic_reloc_section - (bfd *, asection *, bfd_boolean); -extern asection * _bfd_elf_make_dynamic_reloc_section - (asection *, bfd *, unsigned int, bfd *, bfd_boolean); -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_nearest_line_discriminator - (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **, - unsigned int *, unsigned int *); -extern bfd_boolean _bfd_elf_find_line - (bfd *, asymbol **, asymbol *, const char **, unsigned int *); -extern bfd_boolean _bfd_elf_find_line_discriminator - (bfd *, asymbol **, asymbol *, const char **, unsigned int *, unsigned int *); -#define _bfd_generic_find_line _bfd_elf_find_line -#define _bfd_generic_find_nearest_line_discriminator \ - _bfd_elf_find_nearest_line_discriminator -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 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 Elf_Internal_Sym *bfd_sym_from_r_symndx - (struct sym_cache *, bfd *, 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 unsigned int _bfd_elf_strtab_refcount - (struct elf_strtab_hash *, bfd_size_type); -extern void _bfd_elf_strtab_clear_all_refs - (struct elf_strtab_hash *tab); -extern void _bfd_elf_strtab_restore_size - (struct elf_strtab_hash *, bfd_size_type); -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 void _bfd_elf_begin_eh_frame_parsing - (struct bfd_link_info *info); -extern void _bfd_elf_parse_eh_frame - (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *); -extern void _bfd_elf_end_eh_frame_parsing - (struct bfd_link_info *info); - -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_eh_frame_present - (struct bfd_link_info *); -extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr - (struct bfd_link_info *); - -extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *); - -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_output_relocs - (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, - struct elf_link_hash_entry **); - -extern bfd_boolean _bfd_elf_adjust_dynamic_copy - (struct elf_link_hash_entry *, asection *); - -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_reloc_status_type bfd_elf_perform_complex_relocation - (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); - -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 int bfd_elf32_core_file_pid - (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 bfd_boolean bfd_elf32_checksum_contents - (bfd * , void (*) (const void *, size_t, void *), void *); -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 int bfd_elf64_core_file_pid - (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 bfd_boolean bfd_elf64_checksum_contents - (bfd * , void (*) (const void *, size_t, void *), void *); -extern void bfd_elf64_write_relocs - (bfd *, asection *, void *); -extern bfd_boolean bfd_elf64_slurp_reloc_table - (bfd *, asection *, asymbol **, bfd_boolean); - -extern bfd_boolean _bfd_elf_default_relocs_compatible - (const bfd_target *, const bfd_target *); - -extern bfd_boolean _bfd_elf_relocs_compatible - (const bfd_target *, const bfd_target *); -extern bfd_boolean _bfd_elf_notice_as_needed - (bfd *, struct bfd_link_info *, enum notice_asneeded_action); - -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 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 bfd_vma _bfd_elf_default_got_elt_size -(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, - unsigned long); - -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 void _bfd_elf_gc_keep - (struct bfd_link_info *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 asection *_bfd_elf_gc_mark_rsec - (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, - struct elf_reloc_cookie *); - -extern bfd_boolean _bfd_elf_gc_mark_reloc - (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, - struct elf_reloc_cookie *); - -extern bfd_boolean _bfd_elf_gc_mark_fdes - (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn, - struct elf_reloc_cookie *); - -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 *); - -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 *); - -extern bfd_boolean _bfd_elf_is_function_type (unsigned int); - -extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *, - bfd_vma *); - -extern int bfd_elf_get_default_section_type (flagword); - -extern bfd_boolean bfd_elf_lookup_section_flags - (struct bfd_link_info *, struct flag_info *, asection *); - -extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section - (bfd * abfd, asection * section); - -/* 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_xstatereg - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_ppc_vmx - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_ppc_vsx - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_s390_timer - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_s390_todcmp - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_s390_todpreg - (bfd *, char *, int *, const void *, int); -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_s390_tdb - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_arm_vfp - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_aarch_tls - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_aarch_hw_break - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_aarch_hw_watch - (bfd *, char *, int *, const void *, int); -extern char *elfcore_write_lwpstatus - (bfd *, char *, int *, long, int, const void *); -extern char *elfcore_write_register_note - (bfd *, char *, int *, const char *, const void *, int); - -/* Internal structure which holds information to be included in the - PRPSINFO section of Linux core files. - - This is an "internal" structure in the sense that it should be used - to pass information to BFD (via the `elfcore_write_linux_prpsinfo' - function), so things like endianess shouldn't be an issue. This - structure will eventually be converted in one of the - `elf_external_linux_*' structures and written out to an output bfd - by one of the functions declared below. */ - -struct elf_internal_linux_prpsinfo - { - char pr_state; /* Numeric process state. */ - char pr_sname; /* Char for pr_state. */ - char pr_zomb; /* Zombie. */ - char pr_nice; /* Nice val. */ - unsigned long pr_flag; /* Flags. */ - unsigned int pr_uid; - unsigned int pr_gid; - int pr_pid, pr_ppid, pr_pgrp, pr_sid; - char pr_fname[16 + 1]; /* Filename of executable. */ - char pr_psargs[80 + 1]; /* Initial part of arg list. */ - }; - -/* Linux/most 32-bit archs. */ -extern char *elfcore_write_linux_prpsinfo32 - (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); - -/* Linux/most 64-bit archs. */ -extern char *elfcore_write_linux_prpsinfo64 - (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); - -/* Linux/PPC32 uses different layout compared to most archs. */ -extern char *elfcore_write_ppc_linux_prpsinfo32 - (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); - -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 *, bfd_size_type)); -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 *, bfd_size_type)); - -extern bfd_vma bfd_elf_obj_attr_size (bfd *); -extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma); -extern int bfd_elf_get_obj_attr_int (bfd *, int, int); -extern void bfd_elf_add_obj_attr_int (bfd *, int, int, unsigned int); -#define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \ - bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) -extern void bfd_elf_add_obj_attr_string (bfd *, int, int, const char *); -#define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \ - bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) -extern void bfd_elf_add_obj_attr_int_string (bfd *, int, int, unsigned int, - const char *); -#define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \ - bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \ - (INTVAL), (STRVAL)) - -extern char *_bfd_elf_attr_strdup (bfd *, const char *); -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 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 - regular ELF linker hash table. */ - -struct elf_dyn_relocs -{ - struct elf_dyn_relocs *next; - - /* The input section of the reloc. */ - asection *sec; - - /* Total number of relocs copied for the input section. */ - bfd_size_type count; - - /* Number of pc-relative relocs copied for the input section. */ - bfd_size_type pc_count; -}; - -extern bfd_boolean _bfd_elf_create_ifunc_sections - (bfd *, struct bfd_link_info *); -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, 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; - -/* Hash for local symbol with the first section id, ID, in the input - file and the local symbol index, SYM. */ -#define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \ - (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \ - ^ (SYM) ^ ((ID) >> 16)) - -/* 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; \ - } \ - (void) unresolved_reloc; \ - (void) warned; \ - } \ - while (0) - -/* This macro is to avoid lots of duplicated code in the body of the - loop over relocations in xxx_relocate_section() in the various - elfxx-xxxx.c files. - - Handle relocations against symbols from removed linkonce sections, - or sections discarded by a linker script. When doing a relocatable - link, we remove such relocations. Otherwise, we just want the - section contents zeroed and avoid any special processing. */ -#define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \ - rel, 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)) \ - { \ - /* Only remove relocations in debug sections since other \ - sections may require relocations. */ \ - Elf_Internal_Shdr *rel_hdr; \ - \ - rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ - \ - /* Avoid empty output section. */ \ - if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ - { \ - rel_hdr->sh_size -= rel_hdr->sh_entsize; \ - rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ - rel_hdr->sh_size -= rel_hdr->sh_entsize; \ - \ - memmove (rel, rel + count, \ - (relend - rel - count) * sizeof (*rel)); \ - \ - input_section->reloc_count--; \ - relend -= count; \ - rel--; \ - continue; \ - } \ - } \ - \ - for (i_ = 0; i_ < count; i_++) \ - { \ - rel[i_].r_info = 0; \ - rel[i_].r_addend = 0; \ - } \ - rel += count - 1; \ - continue; \ - } - -/* Will a symbol be bound to the definition within the shared - library, if any. A unique symbol can never be bound locally. */ -#define SYMBOLIC_BIND(INFO, H) \ - (!(H)->unique_global \ - && ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))) - -#endif /* _LIBELF_H_ */ |