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binutils-gdb/bfd/elf-bfd.h
Nick Clifton d9bc7a4499 Replace sh_size/sh_entsize with NUM_SHDR_ENTRIES
2001-05-23 08:23:27 +00:00

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/* BFD back-end data structures for ELF files.
Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef _LIBELF_H_
#define _LIBELF_H_ 1
#include "elf/common.h"
#include "elf/internal.h"
#include "elf/external.h"
#include "bfdlink.h"
/* The number of entries in a section is its size divided by the size
of a single entry. This is normally only applicaable to reloc and
symbol table sections. */
#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
/* If size isn't specified as 64 or 32, NAME macro should fail. */
#ifndef NAME
#if ARCH_SIZE==64
#define NAME(x,y) CAT4(x,64,_,y)
#endif
#if ARCH_SIZE==32
#define NAME(x,y) CAT4(x,32,_,y)
#endif
#endif
#ifndef NAME
#define NAME(x,y) CAT4(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;
PTR mips_extr;
PTR 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;
/* 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 size. */
bfd_size_type size;
/* 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;
/* String table index in .dynstr if this is a dynamic symbol. */
unsigned long dynstr_index;
/* 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;
/* If this symbol requires an entry in the global offset table, the
processor specific backend uses this field to track usage and
final offset. We use a union and two names primarily to document
the intent of any particular piece of code. The field should be
used as a count until size_dynamic_sections, at which point the
contents of the .got is fixed. Afterward, if this field is -1,
then the symbol does not require a global offset table entry. */
union
{
bfd_signed_vma refcount;
bfd_vma offset;
} got;
/* Same, but tracks a procedure linkage table entry. */
union
{
bfd_signed_vma refcount;
bfd_vma offset;
} plt;
/* If this symbol is used in the linker created sections, the processor
specific backend uses this field to map the field into the offset
from the beginning of the section. */
struct elf_linker_section_pointers *linker_section_pointer;
/* 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;
/* 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 vtable_entries_size;
boolean *vtable_entries_used;
/* Virtual table derivation info. */
struct elf_link_hash_entry *vtable_parent;
/* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
char type;
/* Symbol st_other value, symbol visibility. */
unsigned char other;
/* Hash value of the name computed using the ELF hash function. */
unsigned long elf_hash_value;
/* Some flags; legal values follow. */
unsigned short elf_link_hash_flags;
/* Symbol is referenced by a non-shared object. */
#define ELF_LINK_HASH_REF_REGULAR 01
/* Symbol is defined by a non-shared object. */
#define ELF_LINK_HASH_DEF_REGULAR 02
/* Symbol is referenced by a shared object. */
#define ELF_LINK_HASH_REF_DYNAMIC 04
/* Symbol is defined by a shared object. */
#define ELF_LINK_HASH_DEF_DYNAMIC 010
/* Symbol has a non-weak reference from a non-shared object. */
#define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020
/* Dynamic symbol has been adjustd. */
#define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040
/* Symbol needs a copy reloc. */
#define ELF_LINK_HASH_NEEDS_COPY 0100
/* Symbol needs a procedure linkage table entry. */
#define ELF_LINK_HASH_NEEDS_PLT 0200
/* Symbol appears in a non-ELF input file. */
#define ELF_LINK_NON_ELF 0400
/* Symbol should be marked as hidden in the version information. */
#define ELF_LINK_HIDDEN 01000
/* Symbol was forced to local scope due to a version script file. */
#define ELF_LINK_FORCED_LOCAL 02000
/* Symbol was marked during garbage collection. */
#define ELF_LINK_HASH_MARK 04000
/* Symbol is referenced by a non-GOT/non-PLT relocation. This is
not currently set by all the backends. */
#define ELF_LINK_NON_GOT_REF 010000
};
/* 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;
};
/* ELF linker hash table. */
struct elf_link_hash_table
{
struct bfd_link_hash_table root;
/* Whether we have created the special dynamic sections required
when linking against or generating a shared object. */
boolean dynamic_sections_created;
/* 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 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 bfd_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;
/* The _GLOBAL_OFFSET_TABLE_ symbol. */
struct elf_link_hash_entry *hgot;
/* A pointer to information used to link stabs in sections. */
PTR stab_info;
/* A pointer to information used to merge SEC_MERGE sections. */
PTR merge_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;
};
/* 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, \
(boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (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))
/* 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;
unsigned char arch_size, file_align;
unsigned char elfclass, ev_current;
int (*write_out_phdrs) PARAMS ((bfd *, const Elf_Internal_Phdr *, int));
boolean (*write_shdrs_and_ehdr) PARAMS ((bfd *));
void (*write_relocs) PARAMS ((bfd *, asection *, PTR));
void (*swap_symbol_out) PARAMS ((bfd *, const Elf_Internal_Sym *, PTR));
boolean (*slurp_reloc_table)
PARAMS ((bfd *, asection *, asymbol **, boolean));
long (*slurp_symbol_table) PARAMS ((bfd *, asymbol **, boolean));
void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
void (*swap_dyn_out) PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
/* This function, if defined, 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)
PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *));
/* This function, if defined, is called to swap out a REL
relocation. */
void (*swap_reloc_out)
PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *));
/* This function, if defined, 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)
PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *));
/* This function, if defined, is called to swap out a RELA
relocation. */
void (*swap_reloca_out)
PARAMS ((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)
struct elf_backend_data
{
/* The architecture for this backend. */
enum bfd_architecture arch;
/* The ELF machine code (EM_xxxx) for this backend. */
int elf_machine_code;
/* The maximum page size for this backend. */
bfd_vma maxpagesize;
/* A function to translate an ELF RELA relocation to a BFD arelent
structure. */
void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
Elf_Internal_Rela *));
/* A function to translate an ELF REL relocation to a BFD arelent
structure. */
void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
Elf_Internal_Rel *));
/* 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. */
boolean (*elf_backend_sym_is_global) PARAMS ((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. */
boolean (*elf_backend_object_p) PARAMS ((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) PARAMS ((bfd *, asymbol *));
/* A function to do additional symbol processing after reading the
entire ELF symbol table. */
boolean (*elf_backend_symbol_table_processing) PARAMS ((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) PARAMS (( Elf_Internal_Sym *, int));
/* 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. */
boolean (*elf_backend_section_processing) PARAMS ((bfd *,
Elf32_Internal_Shdr *));
/* A function to handle unusual section types when creating BFD
sections from ELF sections. */
boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *,
Elf32_Internal_Shdr *,
char *));
/* A function to convert machine dependent section header flags to
BFD internal section header flags. */
boolean (*elf_backend_section_flags) PARAMS ((flagword *,
Elf32_Internal_Shdr *));
/* A function to handle unusual program segment types when creating BFD
sections from ELF program segments. */
boolean (*elf_backend_section_from_phdr) PARAMS ((bfd *,
Elf32_Internal_Phdr *,
int));
/* 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. */
boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_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. */
boolean (*elf_backend_section_from_bfd_section)
PARAMS ((bfd *, Elf32_Internal_Shdr *, 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. */
boolean (*elf_add_symbol_hook)
PARAMS ((bfd *abfd, struct bfd_link_info *info,
const 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. */
boolean (*elf_backend_link_output_symbol_hook)
PARAMS ((bfd *, struct bfd_link_info *info, const char *,
Elf_Internal_Sym *, asection *));
/* 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. */
boolean (*elf_backend_create_dynamic_sections)
PARAMS ((bfd *abfd, struct bfd_link_info *info));
/* 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. */
boolean (*check_relocs)
PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
const Elf_Internal_Rela *relocs));
/* 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. */
boolean (*elf_backend_adjust_dynamic_symbol)
PARAMS ((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. */
boolean (*elf_backend_always_size_sections)
PARAMS ((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. */
boolean (*elf_backend_size_dynamic_sections)
PARAMS ((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
relocateable 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 relocateable 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. */
boolean (*elf_backend_relocate_section)
PARAMS ((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. */
boolean (*elf_backend_finish_dynamic_symbol)
PARAMS ((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. */
boolean (*elf_backend_finish_dynamic_sections)
PARAMS ((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)
PARAMS ((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)
PARAMS ((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) PARAMS ((bfd *));
/* This function is called to modify an existing segment map in a
backend specific fashion. */
boolean (*elf_backend_modify_segment_map) PARAMS ((bfd *));
/* This function is called during section gc to discover the section a
particular relocation refers to. It need not be defined for hosts
that have no queer relocation types. */
asection * (*gc_mark_hook)
PARAMS ((bfd *abfd, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *h, Elf_Internal_Sym *));
/* 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. */
boolean (*gc_sweep_hook)
PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
const Elf_Internal_Rela *relocs));
/* This function, if defined, is called after the ELF headers have
been created. This allows for things like the OS and ABI versions
to be changed. */
void (*elf_backend_post_process_headers)
PARAMS ((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)
PARAMS ((bfd *, PTR, asymbol *));
/* This function, if defined, is called after all local symbols and
global symbols converted to locals are emited into the symtab
section. It allows the backend to emit special global symbols
not handled in the hash table. */
boolean (*elf_backend_output_arch_syms)
PARAMS ((bfd *, struct bfd_link_info *, PTR,
boolean (*) PARAMS ((PTR, const char *,
Elf_Internal_Sym *, asection *))));
/* Copy any information related to dynamic linking from a pre-existing
symbol IND to a newly created symbol DIR. */
void (*elf_backend_copy_indirect_symbol)
PARAMS ((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)
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
/* 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;
/* Alternate EM_xxxx machine codes for this backend. */
int elf_machine_alt1;
int elf_machine_alt2;
const struct elf_size_info *s;
/* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
.got section */
bfd_vma got_symbol_offset;
/* The size in bytes of the headers for the GOT and PLT. This includes
the so-called reserved entries on some systems. */
bfd_vma got_header_size;
bfd_vma plt_header_size;
/* This is true if the linker should act like collect and gather
global constructors and destructors by name. This is true for
MIPS ELF because the Irix 5 tools can not handle the .init
section. */
unsigned collect : 1;
/* This is true if the linker should ignore changes to the type of a
symbol. This is true for MIPS ELF because some Irix 5 objects
record undefined functions as STT_OBJECT although the definitions
are STT_FUNC. */
unsigned type_change_ok : 1;
/* Whether the backend may use REL relocations. (Some backends use
both REL and RELA relocations, and this flag is set for those
backends.) */
unsigned may_use_rel_p : 1;
/* Whether the backend may use RELA relocations. (Some backends use
both REL and RELA relocations, and this flag is set for those
backends.) */
unsigned may_use_rela_p : 1;
/* Whether the default relocation type is RELA. If a backend with
this flag set wants REL relocations for a particular section,
it must note that explicitly. Similarly, if this flag is clear,
and the backend wants RELA relocations for a particular
section. */
unsigned default_use_rela_p : 1;
/* 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 want_dynbss : 1;
};
/* Information stored for each BFD section in an ELF file. This
structure is allocated by elf_new_section_hook. */
struct bfd_elf_section_data
{
/* The ELF header for this section. */
Elf_Internal_Shdr this_hdr;
/* The ELF header for the reloc section associated with this
section, if any. */
Elf_Internal_Shdr rel_hdr;
/* If there is a second reloc section associated with this section,
as can happen on Irix 6, this field points to the header. */
Elf_Internal_Shdr *rel_hdr2;
/* The number of relocations currently assigned to REL_HDR. */
unsigned int rel_count;
/* The number of relocations currently assigned to REL_HDR2. */
unsigned int rel_count2;
/* The ELF section number of this section. Only used for an output
file. */
int this_idx;
/* The ELF section number of the reloc section indicated by
REL_HDR if any. Only used for an output file. */
int rel_idx;
/* The ELF section number of the reloc section indicated by
REL_HDR2 if any. Only used for an output file. */
int rel_idx2;
/* Used by the backend linker to store the symbol hash table entries
associated with relocs against global symbols. */
struct elf_link_hash_entry **rel_hashes;
/* A pointer to the swapped relocs. If the section uses REL relocs,
rather than RELA, all the r_addend fields will be zero. This
pointer may be NULL. It is used by the backend linker. */
Elf_Internal_Rela *relocs;
/* 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. */
long dynindx;
/* A pointer used for .stab linking optimizations. */
PTR stab_info;
/* A pointer used for SEC_MERGE optimizations. */
PTR merge_info;
/* A pointer available for the processor specific ELF backend. */
PTR tdata;
/* Nonzero if this section uses RELA relocations, rather than REL. */
unsigned int use_rela_p:1;
};
#define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
#define get_elf_backend_data(abfd) \
((struct elf_backend_data *) (abfd)->xvec->backend_data)
/* Enumeration to specify the special section. */
typedef enum elf_linker_section_enum
{
LINKER_SECTION_UNKNOWN, /* not used */
LINKER_SECTION_GOT, /* .got section for global offset pointers */
LINKER_SECTION_PLT, /* .plt section for generated procedure stubs */
LINKER_SECTION_SDATA, /* .sdata/.sbss section for PowerPC */
LINKER_SECTION_SDATA2, /* .sdata2/.sbss2 section for PowerPC */
LINKER_SECTION_MAX /* # of linker sections */
} elf_linker_section_enum_t;
/* Sections created by the linker. */
typedef struct elf_linker_section
{
char *name; /* name of the section */
char *rel_name; /* name of the associated .rel{,a}. section */
char *bss_name; /* name of a related .bss section */
char *sym_name; /* name of symbol to reference this section */
asection *section; /* pointer to the section */
asection *bss_section; /* pointer to the bss section associated with this */
asection *rel_section; /* pointer to the relocations needed for this section */
struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */
bfd_vma initial_size; /* initial size before any linker generated allocations */
bfd_vma sym_offset; /* offset of symbol from beginning of section */
bfd_vma hole_size; /* size of reserved address hole in allocation */
bfd_vma hole_offset; /* current offset for the hole */
bfd_vma max_hole_offset; /* maximum offset for the hole */
elf_linker_section_enum_t which; /* which section this is */
boolean hole_written_p; /* whether the hole has been initialized */
unsigned int alignment; /* alignment for the section */
flagword flags; /* flags to use to create the section */
} elf_linker_section_t;
/* Linked list of allocated pointer entries. This hangs off of the symbol lists, and
provides allows us to return different pointers, based on different addend's. */
typedef struct elf_linker_section_pointers
{
struct elf_linker_section_pointers *next; /* next allocated pointer for this symbol */
bfd_vma offset; /* offset of pointer from beginning of section */
bfd_signed_vma addend; /* addend used */
elf_linker_section_enum_t which; /* which linker section this is */
boolean written_address_p; /* whether address was written yet */
} elf_linker_section_pointers_t;
/* Some private data is stashed away for future use using the tdata pointer
in the bfd structure. */
struct elf_obj_tdata
{
Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
Elf_Internal_Shdr **elf_sect_ptr;
Elf_Internal_Phdr *phdr;
struct elf_segment_map *segment_map;
struct bfd_strtab_hash *strtab_ptr;
int num_locals;
int num_globals;
asymbol **section_syms; /* STT_SECTION symbols for each section */
Elf_Internal_Shdr symtab_hdr;
Elf_Internal_Shdr shstrtab_hdr;
Elf_Internal_Shdr strtab_hdr;
Elf_Internal_Shdr dynsymtab_hdr;
Elf_Internal_Shdr dynstrtab_hdr;
Elf_Internal_Shdr dynversym_hdr;
Elf_Internal_Shdr dynverref_hdr;
Elf_Internal_Shdr dynverdef_hdr;
unsigned int symtab_section, shstrtab_section;
unsigned int strtab_section, dynsymtab_section;
unsigned int dynversym_section, dynverdef_section, dynverref_section;
file_ptr next_file_pos;
#if 0
/* we don't need these inside bfd anymore, and I think
these weren't used outside bfd. */
void *prstatus; /* The raw /proc prstatus structure */
void *prpsinfo; /* The raw /proc prpsinfo structure */
#endif
bfd_vma gp; /* The gp value (MIPS only, for now) */
unsigned int gp_size; /* The gp size (MIPS only, for now) */
/* Information grabbed from an elf core file. */
int core_signal;
int core_pid;
int core_lwpid;
char* core_program;
char* core_command;
/* This is set to true if the object was created by the backend
linker. */
boolean linker;
/* 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;
/* A mapping from local symbols to offsets into the global offset
table, used when linking. This is indexed by the symbol index.
Like for the globals, we use a union and two names primarily to
document the intent of any particular piece of code. The field
should be used as a count until size_dynamic_sections, at which
point the contents of the .got is fixed. Afterward, if an entry
is -1, then the symbol does not require a global offset table entry. */
union
{
bfd_signed_vma *refcounts;
bfd_vma *offsets;
} local_got;
/* A mapping from local symbols to offsets into the various linker
sections added. This is index by the symbol index. */
elf_linker_section_pointers_t **linker_section_pointers;
/* 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;
/* When a reference in a regular object is resolved by a shared
object is loaded into via the DT_NEEDED entries by the linker
ELF emulation code, we need to add the shared object to the
DT_NEEDED list of the resulting binary to indicate the dependency
as if the -l option is passed to the linker. This field holds the
name of the loaded shared object. */
const char *dt_soname;
/* 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. */
boolean bad_symtab;
/* Records the result of `get_program_header_size'. */
bfd_size_type program_header_size;
/* Used by find_nearest_line entry point. */
PTR line_info;
/* Used by MIPS ELF find_nearest_line entry point. The structure
could be included directly in this one, but there's no point to
wasting the memory just for the infrequently called
find_nearest_line. */
struct mips_elf_find_line *find_line_info;
/* A place to stash dwarf1 info for this bfd. */
struct dwarf1_debug *dwarf1_find_line_info;
/* A place to stash dwarf2 info for this bfd. */
PTR dwarf2_find_line_info;
/* An array of stub sections indexed by symbol number, used by the
MIPS ELF linker. FIXME: We should figure out some way to only
include this field for a MIPS ELF target. */
asection **local_stubs;
/* Used to determine if the e_flags field has been initialized */
boolean flags_init;
/* 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;
/* Linker sections that we are interested in. */
struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ];
/* The Irix 5 support uses two virtual sections, which represent
text/data symbols defined in dynamic objects. */
asymbol *elf_data_symbol;
asymbol *elf_text_symbol;
asection *elf_data_section;
asection *elf_text_section;
};
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
#define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
#define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
#define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
#define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
#define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
#define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
#define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
#define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
#define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
#define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
#define 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_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
#define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
#define elf_dt_soname(bfd) (elf_tdata(bfd) -> dt_soname)
#define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
#define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
#define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
extern void _bfd_elf_swap_verdef_in
PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *));
extern void _bfd_elf_swap_verdef_out
PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *));
extern void _bfd_elf_swap_verdaux_in
PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *));
extern void _bfd_elf_swap_verdaux_out
PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *));
extern void _bfd_elf_swap_verneed_in
PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *));
extern void _bfd_elf_swap_verneed_out
PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *));
extern void _bfd_elf_swap_vernaux_in
PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *));
extern void _bfd_elf_swap_vernaux_out
PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *));
extern void _bfd_elf_swap_versym_in
PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *));
extern void _bfd_elf_swap_versym_out
PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *));
extern int _bfd_elf_section_from_bfd_section PARAMS ((bfd *, asection *));
extern char *bfd_elf_string_from_elf_section
PARAMS ((bfd *, unsigned, unsigned));
extern char *bfd_elf_get_str_section PARAMS ((bfd *, unsigned));
extern boolean _bfd_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *,
bfd_print_symbol_type));
#define elf_string_from_elf_strtab(abfd,strindex) \
bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
#define bfd_elf32_print_symbol bfd_elf_print_symbol
#define bfd_elf64_print_symbol bfd_elf_print_symbol
extern unsigned long bfd_elf_hash PARAMS ((const char *));
extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
arelent *,
asymbol *,
PTR,
asection *,
bfd *,
char **));
extern boolean bfd_elf_mkobject PARAMS ((bfd *));
extern boolean bfd_elf_mkcorefile PARAMS ((bfd *));
extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
extern boolean _bfd_elf_make_section_from_shdr
PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
extern boolean _bfd_elf_make_section_from_phdr
PARAMS ((bfd *abfd, Elf_Internal_Phdr *hdr, int index, const char *typename));
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
PARAMS ((bfd *));
extern void _bfd_elf_link_hash_copy_indirect
PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
extern void _bfd_elf_link_hash_hide_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
extern boolean _bfd_elf_link_hash_table_init
PARAMS ((struct elf_link_hash_table *, bfd *,
struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
struct bfd_hash_table *,
const char *)));
extern boolean _bfd_elf_slurp_version_tables PARAMS ((bfd *));
extern boolean _bfd_elf_merge_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern boolean _bfd_elf_copy_private_symbol_data
PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
extern boolean _bfd_elf_copy_private_section_data
PARAMS ((bfd *, asection *, bfd *, asection *));
extern boolean _bfd_elf_write_object_contents PARAMS ((bfd *));
extern boolean _bfd_elf_write_corefile_contents PARAMS ((bfd *));
extern boolean _bfd_elf_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
file_ptr,
bfd_size_type));
extern long _bfd_elf_get_symtab_upper_bound PARAMS ((bfd *));
extern long _bfd_elf_get_symtab PARAMS ((bfd *, asymbol **));
extern long _bfd_elf_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
extern long _bfd_elf_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
extern long _bfd_elf_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
extern long _bfd_elf_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
arelent **, asymbol **));
extern long _bfd_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
extern long _bfd_elf_canonicalize_dynamic_reloc PARAMS ((bfd *, arelent **,
asymbol **));
extern asymbol *_bfd_elf_make_empty_symbol PARAMS ((bfd *));
extern void _bfd_elf_get_symbol_info PARAMS ((bfd *, asymbol *,
symbol_info *));
extern boolean _bfd_elf_is_local_label_name PARAMS ((bfd *, const char *));
extern alent *_bfd_elf_get_lineno PARAMS ((bfd *, asymbol *));
extern boolean _bfd_elf_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
unsigned long));
extern boolean _bfd_elf_find_nearest_line PARAMS ((bfd *, asection *,
asymbol **,
bfd_vma, 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 PARAMS ((bfd *, boolean));
extern boolean _bfd_elf_new_section_hook PARAMS ((bfd *, asection *));
extern boolean _bfd_elf_init_reloc_shdr
PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, boolean));
/* If the target doesn't have reloc handling written yet: */
extern void _bfd_elf_no_info_to_howto PARAMS ((bfd *, arelent *,
Elf_Internal_Rela *));
extern boolean bfd_section_from_shdr PARAMS ((bfd *, unsigned int shindex));
extern boolean bfd_section_from_phdr PARAMS ((bfd *, Elf_Internal_Phdr *, int));
extern int _bfd_elf_symbol_from_bfd_symbol PARAMS ((bfd *, asymbol **));
asection *bfd_section_from_elf_index PARAMS ((bfd *, unsigned int));
boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *,
struct bfd_link_info *));
struct bfd_strtab_hash *_bfd_elf_stringtab_init PARAMS ((void));
boolean
_bfd_elf_link_record_dynamic_symbol PARAMS ((struct bfd_link_info *,
struct elf_link_hash_entry *));
long
_bfd_elf_link_lookup_local_dynindx PARAMS ((struct bfd_link_info *,
bfd *, long));
boolean
_bfd_elf_compute_section_file_positions PARAMS ((bfd *,
struct bfd_link_info *));
void _bfd_elf_assign_file_positions_for_relocs PARAMS ((bfd *));
file_ptr _bfd_elf_assign_file_position_for_section PARAMS ((Elf_Internal_Shdr *,
file_ptr,
boolean));
extern boolean _bfd_elf_validate_reloc PARAMS ((bfd *, arelent *));
boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *,
struct bfd_link_info *));
boolean _bfd_elf_create_got_section PARAMS ((bfd *,
struct bfd_link_info *));
unsigned long _bfd_elf_link_renumber_dynsyms PARAMS ((bfd *,
struct bfd_link_info *));
elf_linker_section_t *_bfd_elf_create_linker_section
PARAMS ((bfd *abfd,
struct bfd_link_info *info,
enum elf_linker_section_enum,
elf_linker_section_t *defaults));
elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section
PARAMS ((elf_linker_section_pointers_t *linker_pointers,
bfd_signed_vma addend,
elf_linker_section_enum_t which));
boolean bfd_elf32_create_pointer_linker_section
PARAMS ((bfd *abfd,
struct bfd_link_info *info,
elf_linker_section_t *lsect,
struct elf_link_hash_entry *h,
const Elf32_Internal_Rela *rel));
bfd_vma bfd_elf32_finish_pointer_linker_section
PARAMS ((bfd *output_abfd,
bfd *input_bfd,
struct bfd_link_info *info,
elf_linker_section_t *lsect,
struct elf_link_hash_entry *h,
bfd_vma relocation,
const Elf32_Internal_Rela *rel,
int relative_reloc));
boolean bfd_elf64_create_pointer_linker_section
PARAMS ((bfd *abfd,
struct bfd_link_info *info,
elf_linker_section_t *lsect,
struct elf_link_hash_entry *h,
const Elf64_Internal_Rela *rel));
bfd_vma bfd_elf64_finish_pointer_linker_section
PARAMS ((bfd *output_abfd,
bfd *input_bfd,
struct bfd_link_info *info,
elf_linker_section_t *lsect,
struct elf_link_hash_entry *h,
bfd_vma relocation,
const Elf64_Internal_Rela *rel,
int relative_reloc));
boolean _bfd_elf_make_linker_section_rela
PARAMS ((bfd *dynobj,
elf_linker_section_t *lsect,
int alignment));
boolean _bfd_elfcore_section_from_phdr
PARAMS ((bfd *, Elf_Internal_Phdr *, int));
extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
bfd *));
extern boolean bfd_elf32_bfd_link_add_symbols
PARAMS ((bfd *, struct bfd_link_info *));
extern boolean bfd_elf32_bfd_final_link
PARAMS ((bfd *, struct bfd_link_info *));
extern void bfd_elf32_swap_symbol_in
PARAMS ((bfd *, const Elf32_External_Sym *, Elf_Internal_Sym *));
extern void bfd_elf32_swap_symbol_out
PARAMS ((bfd *, const Elf_Internal_Sym *, PTR));
extern void bfd_elf32_swap_reloc_in
PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *));
extern void bfd_elf32_swap_reloc_out
PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *));
extern void bfd_elf32_swap_reloca_in
PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *));
extern void bfd_elf32_swap_reloca_out
PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *));
extern void bfd_elf32_swap_phdr_in
PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *));
extern void bfd_elf32_swap_phdr_out
PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *));
extern void bfd_elf32_swap_dyn_in
PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
extern void bfd_elf32_swap_dyn_out
PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
extern long bfd_elf32_slurp_symbol_table
PARAMS ((bfd *, asymbol **, boolean));
extern boolean bfd_elf32_write_shdrs_and_ehdr PARAMS ((bfd *));
extern int bfd_elf32_write_out_phdrs
PARAMS ((bfd *, const Elf_Internal_Phdr *, int));
extern void bfd_elf32_write_relocs
PARAMS ((bfd *, asection *, PTR));
extern boolean bfd_elf32_slurp_reloc_table
PARAMS ((bfd *, asection *, asymbol **, boolean));
extern boolean bfd_elf32_add_dynamic_entry
PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
extern boolean bfd_elf32_link_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs
PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
bfd *));
extern boolean bfd_elf64_bfd_link_add_symbols
PARAMS ((bfd *, struct bfd_link_info *));
extern boolean bfd_elf64_bfd_final_link
PARAMS ((bfd *, struct bfd_link_info *));
extern void bfd_elf64_swap_symbol_in
PARAMS ((bfd *, const Elf64_External_Sym *, Elf_Internal_Sym *));
extern void bfd_elf64_swap_symbol_out
PARAMS ((bfd *, const Elf_Internal_Sym *, PTR));
extern void bfd_elf64_swap_reloc_in
PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *));
extern void bfd_elf64_swap_reloc_out
PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *));
extern void bfd_elf64_swap_reloca_in
PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *));
extern void bfd_elf64_swap_reloca_out
PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *));
extern void bfd_elf64_swap_phdr_in
PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *));
extern void bfd_elf64_swap_phdr_out
PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *));
extern void bfd_elf64_swap_dyn_in
PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
extern void bfd_elf64_swap_dyn_out
PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
extern long bfd_elf64_slurp_symbol_table
PARAMS ((bfd *, asymbol **, boolean));
extern boolean bfd_elf64_write_shdrs_and_ehdr PARAMS ((bfd *));
extern int bfd_elf64_write_out_phdrs
PARAMS ((bfd *, const Elf_Internal_Phdr *, int));
extern void bfd_elf64_write_relocs
PARAMS ((bfd *, asection *, PTR));
extern boolean bfd_elf64_slurp_reloc_table
PARAMS ((bfd *, asection *, asymbol **, boolean));
extern boolean bfd_elf64_add_dynamic_entry
PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
extern boolean bfd_elf64_link_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs
PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
#define bfd_elf32_link_record_dynamic_symbol \
_bfd_elf_link_record_dynamic_symbol
#define bfd_elf64_link_record_dynamic_symbol \
_bfd_elf_link_record_dynamic_symbol
boolean _bfd_elf32_link_record_local_dynamic_symbol
PARAMS ((struct bfd_link_info *, bfd *, long));
boolean _bfd_elf64_link_record_local_dynamic_symbol
PARAMS ((struct bfd_link_info *, bfd *, long));
extern boolean _bfd_elf_close_and_cleanup PARAMS ((bfd *));
extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR,
asection *, bfd *, char **));
boolean _bfd_elf32_gc_sections
PARAMS ((bfd *abfd, struct bfd_link_info *info));
boolean _bfd_elf32_gc_common_finalize_got_offsets
PARAMS ((bfd *abfd, struct bfd_link_info *info));
boolean _bfd_elf32_gc_common_final_link
PARAMS ((bfd *, struct bfd_link_info *));
boolean _bfd_elf32_gc_record_vtinherit
PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
boolean _bfd_elf32_gc_record_vtentry
PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
boolean _bfd_elf64_gc_sections
PARAMS ((bfd *abfd, struct bfd_link_info *info));
boolean _bfd_elf64_gc_common_finalize_got_offsets
PARAMS ((bfd *abfd, struct bfd_link_info *info));
boolean _bfd_elf64_gc_common_final_link
PARAMS ((bfd *, struct bfd_link_info *));
boolean _bfd_elf64_gc_record_vtinherit
PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
boolean _bfd_elf64_gc_record_vtentry
PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
/* MIPS ELF specific routines. */
extern boolean _bfd_mips_elf_object_p PARAMS ((bfd *));
extern boolean _bfd_mips_elf_section_from_shdr
PARAMS ((bfd *, Elf_Internal_Shdr *, char *));
extern boolean _bfd_mips_elf_fake_sections
PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
extern boolean _bfd_mips_elf_section_from_bfd_section
PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, int *));
extern boolean _bfd_mips_elf_section_processing
PARAMS ((bfd *, Elf_Internal_Shdr *));
extern void _bfd_mips_elf_symbol_processing PARAMS ((bfd *, asymbol *));
extern boolean _bfd_mips_elf_read_ecoff_info
PARAMS ((bfd *, asection *, struct ecoff_debug_info *));
extern void _bfd_mips_elf_final_write_processing PARAMS ((bfd *, boolean));
extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
extern boolean _bfd_mips_elf_set_private_flags PARAMS ((bfd *, flagword));
extern boolean _bfd_mips_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
extern boolean _bfd_mips_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
extern boolean _bfd_mips_elf_find_nearest_line
PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
const char **, unsigned int *));
extern boolean _bfd_mips_elf_set_section_contents
PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
extern boolean _bfd_mips_elf_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern boolean _bfd_mips_elf_add_symbol_hook
PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
const char **, flagword *, asection **, bfd_vma *));
extern boolean _bfd_mips_elf_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
extern boolean _bfd_mips_elf_finish_dynamic_symbol
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
Elf_Internal_Sym *));
extern boolean _bfd_mips_elf_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern asection * _bfd_mips_elf_gc_mark_hook
PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *));
extern boolean _bfd_mips_elf_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
extern boolean _bfd_mips_elf_always_size_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern boolean _bfd_mips_elf_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
extern boolean _bfd_mips_elf_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create
PARAMS ((bfd *));
extern boolean _bfd_mips_elf_print_private_bfd_data
PARAMS ((bfd *, PTR));
extern boolean _bfd_mips_elf_link_output_symbol_hook
PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
asection *));
extern boolean _bfd_mips_elf_final_link
PARAMS ((bfd *, struct bfd_link_info *));
extern int _bfd_mips_elf_additional_program_headers PARAMS ((bfd *));
extern boolean _bfd_mips_elf_modify_segment_map PARAMS ((bfd *));
extern boolean _bfd_mips_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
/* SH ELF specific routine. */
extern boolean _sh_elf_set_mach_from_flags PARAMS ((bfd *));
#endif /* _LIBELF_H_ */
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