1763 lines
64 KiB
C
1763 lines
64 KiB
C
/* BFD back-end data structures for ELF files.
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Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2002, 2003, 2004 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifndef _LIBELF_H_
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#define _LIBELF_H_ 1
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#include "elf/common.h"
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#include "elf/internal.h"
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#include "elf/external.h"
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#include "bfdlink.h"
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/* The number of entries in a section is its size divided by the size
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of a single entry. This is normally only applicable to reloc and
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symbol table sections. */
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#define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
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/* If size isn't specified as 64 or 32, NAME macro should fail. */
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#ifndef NAME
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#if ARCH_SIZE == 64
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#define NAME(x, y) x ## 64 ## _ ## y
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#endif
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#if ARCH_SIZE == 32
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#define NAME(x, y) x ## 32 ## _ ## y
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#endif
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#endif
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#ifndef NAME
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#define NAME(x, y) x ## NOSIZE ## _ ## y
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#endif
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#define ElfNAME(X) NAME(Elf,X)
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#define elfNAME(X) NAME(elf,X)
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/* Information held for an ELF symbol. The first field is the
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corresponding asymbol. Every symbol is an ELF file is actually a
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pointer to this structure, although it is often handled as a
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pointer to an asymbol. */
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typedef struct
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{
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/* The BFD symbol. */
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asymbol symbol;
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/* ELF symbol information. */
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Elf_Internal_Sym internal_elf_sym;
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/* Backend specific information. */
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union
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{
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unsigned int hppa_arg_reloc;
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void *mips_extr;
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void *any;
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}
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tc_data;
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/* Version information. This is from an Elf_Internal_Versym
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structure in a SHT_GNU_versym section. It is zero if there is no
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version information. */
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unsigned short version;
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} elf_symbol_type;
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struct elf_strtab_hash;
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struct got_entry;
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struct plt_entry;
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/* ELF linker hash table entries. */
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struct elf_link_hash_entry
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{
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struct bfd_link_hash_entry root;
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/* Symbol index in output file. This is initialized to -1. It is
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set to -2 if the symbol is used by a reloc. */
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long indx;
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/* Symbol index as a dynamic symbol. Initialized to -1, and remains
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-1 if this is not a dynamic symbol. */
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/* ??? Note that this is consistently used as a synonym for tests
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against whether we can perform various simplifying transformations
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to the code. (E.g. changing a pc-relative jump to a PLT entry
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into a pc-relative jump to the target function.) That test, which
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is often relatively complex, and someplaces wrong or incomplete,
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should really be replaced by a predicate in elflink.c.
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End result: this field -1 does not indicate that the symbol is
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not in the dynamic symbol table, but rather that the symbol is
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not visible outside this DSO. */
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long dynindx;
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/* String table index in .dynstr if this is a dynamic symbol. */
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unsigned long dynstr_index;
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/* Hash value of the name computed using the ELF hash function. */
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unsigned long elf_hash_value;
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/* If this is a weak defined symbol from a dynamic object, this
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field points to a defined symbol with the same value, if there is
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one. Otherwise it is NULL. */
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struct elf_link_hash_entry *weakdef;
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/* Version information. */
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union
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{
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/* This field is used for a symbol which is not defined in a
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regular object. It points to the version information read in
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from the dynamic object. */
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Elf_Internal_Verdef *verdef;
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/* This field is used for a symbol which is defined in a regular
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object. It is set up in size_dynamic_sections. It points to
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the version information we should write out for this symbol. */
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struct bfd_elf_version_tree *vertree;
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} verinfo;
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/* Virtual table entry use information. This array is nominally of size
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size/sizeof(target_void_pointer), though we have to be able to assume
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and track a size while the symbol is still undefined. It is indexed
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via offset/sizeof(target_void_pointer). */
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size_t vtable_entries_size;
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bfd_boolean *vtable_entries_used;
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/* Virtual table derivation info. */
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struct elf_link_hash_entry *vtable_parent;
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/* If this symbol requires an entry in the global offset table, the
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processor specific backend uses this field to track usage and
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final offset. Two schemes are supported: The first assumes that
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a symbol may only have one GOT entry, and uses REFCOUNT until
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size_dynamic_sections, at which point the contents of the .got is
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fixed. Afterward, if OFFSET is -1, then the symbol does not
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require a global offset table entry. The second scheme allows
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multiple GOT entries per symbol, managed via a linked list
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pointed to by GLIST. */
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union gotplt_union
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{
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bfd_signed_vma refcount;
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bfd_vma offset;
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struct got_entry *glist;
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struct plt_entry *plist;
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} got;
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/* Same, but tracks a procedure linkage table entry. */
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union gotplt_union plt;
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/* Symbol size. */
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bfd_size_type size;
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/* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */
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char type;
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/* Symbol st_other value, symbol visibility. */
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unsigned char other;
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/* Some flags; legal values follow. */
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unsigned short elf_link_hash_flags;
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/* Symbol is referenced by a non-shared object. */
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#define ELF_LINK_HASH_REF_REGULAR 01
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/* Symbol is defined by a non-shared object. */
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#define ELF_LINK_HASH_DEF_REGULAR 02
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/* Symbol is referenced by a shared object. */
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#define ELF_LINK_HASH_REF_DYNAMIC 04
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/* Symbol is defined by a shared object. */
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#define ELF_LINK_HASH_DEF_DYNAMIC 010
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/* Symbol has a non-weak reference from a non-shared object. */
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#define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020
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/* Dynamic symbol has been adjustd. */
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#define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040
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/* Symbol needs a copy reloc. */
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#define ELF_LINK_HASH_NEEDS_COPY 0100
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/* Symbol needs a procedure linkage table entry. */
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#define ELF_LINK_HASH_NEEDS_PLT 0200
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/* Symbol appears in a non-ELF input file. */
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#define ELF_LINK_NON_ELF 0400
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/* Symbol should be marked as hidden in the version information. */
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#define ELF_LINK_HIDDEN 01000
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/* Symbol was forced to local scope due to a version script file. */
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#define ELF_LINK_FORCED_LOCAL 02000
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/* Symbol was marked during garbage collection. */
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#define ELF_LINK_HASH_MARK 04000
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/* Symbol is referenced by a non-GOT/non-PLT relocation. This is
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not currently set by all the backends. */
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#define ELF_LINK_NON_GOT_REF 010000
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/* Symbol has a definition in a shared object. */
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#define ELF_LINK_DYNAMIC_DEF 020000
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/* Symbol is weak in all shared objects. */
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#define ELF_LINK_DYNAMIC_WEAK 040000
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/* Symbol is referenced with a relocation where C/C++ pointer equality
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matters. */
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#define ELF_LINK_POINTER_EQUALITY_NEEDED 0100000
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};
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/* Will references to this symbol always reference the symbol
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in this object? STV_PROTECTED is excluded from the visibility test
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here so that function pointer comparisons work properly. Since
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function symbols not defined in an app are set to their .plt entry,
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it's necessary for shared libs to also reference the .plt even
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though the symbol is really local to the shared lib. */
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#define SYMBOL_REFERENCES_LOCAL(INFO, H) \
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_bfd_elf_symbol_refs_local_p (H, INFO, 0)
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/* Will _calls_ to this symbol always call the version in this object? */
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#define SYMBOL_CALLS_LOCAL(INFO, H) \
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_bfd_elf_symbol_refs_local_p (H, INFO, 1)
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/* Records local symbols to be emitted in the dynamic symbol table. */
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struct elf_link_local_dynamic_entry
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{
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struct elf_link_local_dynamic_entry *next;
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/* The input bfd this symbol came from. */
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bfd *input_bfd;
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/* The index of the local symbol being copied. */
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long input_indx;
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/* The index in the outgoing dynamic symbol table. */
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long dynindx;
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/* A copy of the input symbol. */
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Elf_Internal_Sym isym;
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};
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struct elf_link_loaded_list
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{
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struct elf_link_loaded_list *next;
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bfd *abfd;
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};
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/* Structures used by the eh_frame optimization code. */
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struct cie_header
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{
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unsigned int length;
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unsigned int id;
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};
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struct cie
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{
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struct cie_header hdr;
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unsigned char version;
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unsigned char augmentation[20];
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unsigned int code_align;
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int data_align;
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unsigned int ra_column;
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unsigned int augmentation_size;
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struct elf_link_hash_entry *personality;
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unsigned char per_encoding;
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unsigned char lsda_encoding;
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unsigned char fde_encoding;
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unsigned char initial_insn_length;
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unsigned char make_relative;
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unsigned char make_lsda_relative;
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unsigned char initial_instructions[50];
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};
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struct eh_cie_fde
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{
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unsigned int offset;
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unsigned int size;
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asection *sec;
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unsigned int new_offset;
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unsigned char fde_encoding;
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unsigned char lsda_encoding;
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unsigned char lsda_offset;
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unsigned char cie : 1;
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unsigned char removed : 1;
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unsigned char make_relative : 1;
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unsigned char make_lsda_relative : 1;
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unsigned char per_encoding_relative : 1;
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};
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struct eh_frame_sec_info
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{
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unsigned int count;
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unsigned int alloced;
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struct eh_cie_fde entry[1];
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};
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struct eh_frame_array_ent
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{
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bfd_vma initial_loc;
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bfd_vma fde;
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};
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struct eh_frame_hdr_info
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{
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struct cie last_cie;
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asection *last_cie_sec;
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asection *hdr_sec;
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unsigned int last_cie_offset;
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unsigned int fde_count, array_count;
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struct eh_frame_array_ent *array;
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/* TRUE if .eh_frame_hdr should contain the sorted search table.
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We build it if we successfully read all .eh_frame input sections
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and recognize them. */
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bfd_boolean table;
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};
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/* ELF linker hash table. */
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struct elf_link_hash_table
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{
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struct bfd_link_hash_table root;
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/* Whether we have created the special dynamic sections required
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when linking against or generating a shared object. */
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bfd_boolean dynamic_sections_created;
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/* The BFD used to hold special sections created by the linker.
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This will be the first BFD found which requires these sections to
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be created. */
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bfd *dynobj;
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/* The value to use when initialising got.refcount/offset and
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plt.refcount/offset in an elf_link_hash_entry. Set to zero when
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the values are refcounts. Set to init_offset in
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size_dynamic_sections when the values may be offsets. */
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union gotplt_union init_refcount;
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/* The value to use for got.refcount/offset and plt.refcount/offset
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when the values may be offsets. Normally (bfd_vma) -1. */
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union gotplt_union init_offset;
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/* The number of symbols found in the link which must be put into
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the .dynsym section. */
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bfd_size_type dynsymcount;
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/* The string table of dynamic symbols, which becomes the .dynstr
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section. */
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struct elf_strtab_hash *dynstr;
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/* The number of buckets in the hash table in the .hash section.
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This is based on the number of dynamic symbols. */
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bfd_size_type bucketcount;
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/* A linked list of DT_NEEDED names found in dynamic objects
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included in the link. */
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struct bfd_link_needed_list *needed;
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/* The _GLOBAL_OFFSET_TABLE_ symbol. */
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struct elf_link_hash_entry *hgot;
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/* A pointer to information used to link stabs in sections. */
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void *stab_info;
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/* A pointer to information used to merge SEC_MERGE sections. */
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void *merge_info;
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/* Used by eh_frame code when editing .eh_frame. */
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struct eh_frame_hdr_info eh_info;
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/* A linked list of local symbols to be added to .dynsym. */
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struct elf_link_local_dynamic_entry *dynlocal;
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/* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
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objects included in the link. */
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struct bfd_link_needed_list *runpath;
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/* Cached first output tls section and size of PT_TLS segment. */
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asection *tls_sec;
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bfd_size_type tls_size;
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/* A linked list of BFD's loaded in the link. */
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struct elf_link_loaded_list *loaded;
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};
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/* Look up an entry in an ELF linker hash table. */
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#define elf_link_hash_lookup(table, string, create, copy, follow) \
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((struct elf_link_hash_entry *) \
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bfd_link_hash_lookup (&(table)->root, (string), (create), \
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(copy), (follow)))
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/* Traverse an ELF linker hash table. */
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#define elf_link_hash_traverse(table, func, info) \
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(bfd_link_hash_traverse \
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(&(table)->root, \
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(bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
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(info)))
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/* Get the ELF linker hash table from a link_info structure. */
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#define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
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/* Returns TRUE if the hash table is a struct elf_link_hash_table. */
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#define is_elf_hash_table(htab) \
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(((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table)
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/* Used by bfd_section_from_r_symndx to cache a small number of local
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symbol to section mappings. */
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#define LOCAL_SYM_CACHE_SIZE 32
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struct sym_sec_cache
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{
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bfd *abfd;
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unsigned long indx[LOCAL_SYM_CACHE_SIZE];
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asection *sec[LOCAL_SYM_CACHE_SIZE];
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};
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/* Constant information held for an ELF backend. */
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struct elf_size_info {
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unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr;
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unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note;
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||
|
||
/* The size of entries in the .hash section. */
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||
unsigned char sizeof_hash_entry;
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||
|
||
/* The number of internal relocations to allocate per external
|
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relocation entry. */
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unsigned char int_rels_per_ext_rel;
|
||
/* We use some fixed size arrays. This should be large enough to
|
||
handle all back-ends. */
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||
#define MAX_INT_RELS_PER_EXT_REL 3
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||
unsigned char arch_size, log_file_align;
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||
unsigned char elfclass, ev_current;
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||
int (*write_out_phdrs)
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||
(bfd *, const Elf_Internal_Phdr *, unsigned int);
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||
bfd_boolean
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||
(*write_shdrs_and_ehdr) (bfd *);
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||
void (*write_relocs)
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||
(bfd *, asection *, void *);
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||
void (*swap_symbol_in)
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||
(bfd *, const void *, const void *, Elf_Internal_Sym *);
|
||
void (*swap_symbol_out)
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||
(bfd *, const Elf_Internal_Sym *, void *, void *);
|
||
bfd_boolean (*slurp_reloc_table)
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||
(bfd *, asection *, asymbol **, bfd_boolean);
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||
long (*slurp_symbol_table)
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||
(bfd *, asymbol **, bfd_boolean);
|
||
void (*swap_dyn_in)
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||
(bfd *, const void *, Elf_Internal_Dyn *);
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||
void (*swap_dyn_out)
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||
(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)
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||
(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)
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(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
};
|
||
|
||
#define elf_symbol_from(ABFD,S) \
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(((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
|
||
&& (S)->the_bfd->tdata.elf_obj_data != 0) \
|
||
? (elf_symbol_type *) (S) \
|
||
: 0)
|
||
|
||
enum elf_reloc_type_class {
|
||
reloc_class_normal,
|
||
reloc_class_relative,
|
||
reloc_class_plt,
|
||
reloc_class_copy
|
||
};
|
||
|
||
struct elf_reloc_cookie
|
||
{
|
||
Elf_Internal_Rela *rels, *rel, *relend;
|
||
Elf_Internal_Sym *locsyms;
|
||
bfd *abfd;
|
||
size_t locsymcount;
|
||
size_t extsymoff;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
int r_sym_shift;
|
||
bfd_boolean bad_symtab;
|
||
};
|
||
|
||
/* The level of IRIX compatibility we're striving for. */
|
||
|
||
typedef enum {
|
||
ict_none,
|
||
ict_irix5,
|
||
ict_irix6
|
||
} irix_compat_t;
|
||
|
||
/* Mapping of ELF section names and types. */
|
||
struct bfd_elf_special_section
|
||
{
|
||
const char *prefix;
|
||
int prefix_length;
|
||
/* 0 means name must match PREFIX exactly.
|
||
-1 means name must start with PREFIX followed by an arbitrary string.
|
||
-2 means name must match PREFIX exactly or consist of PREFIX followed
|
||
by a dot then anything.
|
||
> 0 means name must start with the first PREFIX_LENGTH chars of
|
||
PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */
|
||
int suffix_length;
|
||
int type;
|
||
int attr;
|
||
};
|
||
|
||
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)
|
||
(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);
|
||
|
||
/* 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 *);
|
||
|
||
/* A function to convert machine dependent section header flags to
|
||
BFD internal section header flags. */
|
||
bfd_boolean (*elf_backend_section_flags)
|
||
(flagword *, Elf_Internal_Shdr *);
|
||
|
||
/* 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);
|
||
|
||
/* A function to set up the ELF section header for a BFD section in
|
||
preparation for writing it out. This is where the flags and type
|
||
fields are set for unusual sections. */
|
||
bfd_boolean (*elf_backend_fake_sections)
|
||
(bfd *, Elf_Internal_Shdr *, asection *);
|
||
|
||
/* A function to get the ELF section index for a BFD section. If
|
||
this returns TRUE, the section was found. If it is a normal ELF
|
||
section, *RETVAL should be left unchanged. If it is not a normal
|
||
ELF section *RETVAL should be set to the SHN_xxxx index. */
|
||
bfd_boolean (*elf_backend_section_from_bfd_section)
|
||
(bfd *, asection *, int *retval);
|
||
|
||
/* If this field is not NULL, it is called by the add_symbols phase
|
||
of a link just before adding a symbol to the global linker hash
|
||
table. It may modify any of the fields as it wishes. If *NAME
|
||
is set to NULL, the symbol will be skipped rather than being
|
||
added to the hash table. This function is responsible for
|
||
handling all processor dependent symbol bindings and section
|
||
indices, and must set at least *FLAGS and *SEC for each processor
|
||
dependent case; failure to do so will cause a link error. */
|
||
bfd_boolean (*elf_add_symbol_hook)
|
||
(bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *,
|
||
const char **name, flagword *flags, asection **sec, bfd_vma *value);
|
||
|
||
/* If this field is not NULL, it is called by the elf_link_output_sym
|
||
phase of a link for each symbol which will appear in the object file. */
|
||
bfd_boolean (*elf_backend_link_output_symbol_hook)
|
||
(struct bfd_link_info *info, const char *, Elf_Internal_Sym *,
|
||
asection *, struct elf_link_hash_entry *);
|
||
|
||
/* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
|
||
linker the first time it encounters a dynamic object in the link.
|
||
This function must create any sections required for dynamic
|
||
linking. The ABFD argument is a dynamic object. The .interp,
|
||
.dynamic, .dynsym, .dynstr, and .hash functions have already been
|
||
created, and this function may modify the section flags if
|
||
desired. This function will normally create the .got and .plt
|
||
sections, but different backends have different requirements. */
|
||
bfd_boolean (*elf_backend_create_dynamic_sections)
|
||
(bfd *abfd, struct bfd_link_info *info);
|
||
|
||
/* 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 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);
|
||
|
||
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
||
to handle the relocations for a section.
|
||
|
||
The relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero.
|
||
|
||
This function is responsible for adjust the section contents as
|
||
necessary, and (if using Rela relocs and generating a
|
||
relocatable output file) adjusting the reloc addend as
|
||
necessary.
|
||
|
||
This function does not have to worry about setting the reloc
|
||
address or the reloc symbol index.
|
||
|
||
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
||
|
||
LOCAL_SECTIONS is an array giving the section in the input file
|
||
corresponding to the st_shndx field of each local symbol.
|
||
|
||
The global hash table entry for the global symbols can be found
|
||
via elf_sym_hashes (input_bfd).
|
||
|
||
When generating relocatable output, this function must handle
|
||
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
||
going to be the section symbol corresponding to the output
|
||
section, which means that the addend must be adjusted
|
||
accordingly. */
|
||
bfd_boolean (*elf_backend_relocate_section)
|
||
(bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
|
||
asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs,
|
||
Elf_Internal_Sym *local_syms, asection **local_sections);
|
||
|
||
/* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
|
||
linker just before it writes a symbol out to the .dynsym section.
|
||
The processor backend may make any required adjustment to the
|
||
symbol. It may also take the opportunity to set contents of the
|
||
dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on
|
||
all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
|
||
on those symbols which are defined by a dynamic object. */
|
||
bfd_boolean (*elf_backend_finish_dynamic_symbol)
|
||
(bfd *output_bfd, struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h, Elf_Internal_Sym *sym);
|
||
|
||
/* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
|
||
linker just before it writes all the dynamic sections out to the
|
||
output file. The FINISH_DYNAMIC_SYMBOL will have been called on
|
||
all dynamic symbols. */
|
||
bfd_boolean (*elf_backend_finish_dynamic_sections)
|
||
(bfd *output_bfd, struct bfd_link_info *info);
|
||
|
||
/* A function to do any beginning processing needed for the ELF file
|
||
before building the ELF headers and computing file positions. */
|
||
void (*elf_backend_begin_write_processing)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* A function to do any final processing needed for the ELF file
|
||
before writing it out. The LINKER argument is TRUE if this BFD
|
||
was created by the ELF backend linker. */
|
||
void (*elf_backend_final_write_processing)
|
||
(bfd *, bfd_boolean linker);
|
||
|
||
/* This function is called by get_program_header_size. It should
|
||
return the number of additional program segments which this BFD
|
||
will need. It should return -1 on error. */
|
||
int (*elf_backend_additional_program_headers)
|
||
(bfd *);
|
||
|
||
/* 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 during section gc to discover the section a
|
||
particular relocation refers to. */
|
||
asection * (*gc_mark_hook)
|
||
(asection *sec, 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. */
|
||
bfd_boolean (*gc_sweep_hook)
|
||
(bfd *abfd, struct bfd_link_info *info, asection *o,
|
||
const Elf_Internal_Rela *relocs);
|
||
|
||
/* This function, if defined, is called after the ELF headers have
|
||
been created. This allows for things like the OS and ABI versions
|
||
to be changed. */
|
||
void (*elf_backend_post_process_headers)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
/* This function, if defined, prints a symbol to file and returns the
|
||
name of the symbol to be printed. It should return NULL to fall
|
||
back to default symbol printing. */
|
||
const char *(*elf_backend_print_symbol_all)
|
||
(bfd *, void *, asymbol *);
|
||
|
||
/* This function, if defined, is called after all local symbols and
|
||
global symbols converted to locals are emitted into the symtab
|
||
section. It allows the backend to emit special 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)
|
||
(const struct elf_backend_data *, 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);
|
||
|
||
/* 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);
|
||
|
||
/* 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 *);
|
||
|
||
/* Count relocations. Not called for relocatable links
|
||
or if all relocs are being preserved in the output. */
|
||
unsigned int (*elf_backend_count_relocs)
|
||
(asection *, Elf_Internal_Rela *);
|
||
|
||
/* This function, if defined, is called when an NT_PRSTATUS note is found
|
||
in a core file. */
|
||
bfd_boolean (*elf_backend_grok_prstatus)
|
||
(bfd *, Elf_Internal_Note *);
|
||
|
||
/* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
|
||
note is found in a core file. */
|
||
bfd_boolean (*elf_backend_grok_psinfo)
|
||
(bfd *, Elf_Internal_Note *);
|
||
|
||
/* Functions to print VMAs. Special code to handle 64 bit ELF files. */
|
||
void (* elf_backend_sprintf_vma)
|
||
(bfd *, char *, bfd_vma);
|
||
void (* elf_backend_fprintf_vma)
|
||
(bfd *, void *, bfd_vma);
|
||
|
||
/* This function returns class of a reloc type. */
|
||
enum elf_reloc_type_class (*elf_backend_reloc_type_class)
|
||
(const Elf_Internal_Rela *);
|
||
|
||
/* This function, if defined, removes information about discarded functions
|
||
from other sections which mention them. */
|
||
bfd_boolean (*elf_backend_discard_info)
|
||
(bfd *, struct elf_reloc_cookie *, struct bfd_link_info *);
|
||
|
||
/* This function, if defined, signals that the function above has removed
|
||
the discarded relocations for this section. */
|
||
bfd_boolean (*elf_backend_ignore_discarded_relocs)
|
||
(asection *);
|
||
|
||
/* 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 *, 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, char *myaddr, int len));
|
||
|
||
/* 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 section map. */
|
||
const struct bfd_elf_special_section *special_sections;
|
||
|
||
/* 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 header for the GOT. This includes the
|
||
so-called reserved entries on some systems. */
|
||
bfd_vma got_header_size;
|
||
|
||
/* This is TRUE if the linker should act like collect and gather
|
||
global constructors and destructors by name. This is TRUE for
|
||
MIPS ELF because the Irix 5 tools can not handle the .init
|
||
section. */
|
||
unsigned collect : 1;
|
||
|
||
/* This is TRUE if the linker should ignore changes to the type of a
|
||
symbol. This is TRUE for MIPS ELF because some Irix 5 objects
|
||
record undefined functions as STT_OBJECT although the definitions
|
||
are STT_FUNC. */
|
||
unsigned type_change_ok : 1;
|
||
|
||
/* Whether the backend may use REL relocations. (Some backends use
|
||
both REL and RELA relocations, and this flag is set for those
|
||
backends.) */
|
||
unsigned may_use_rel_p : 1;
|
||
|
||
/* Whether the backend may use RELA relocations. (Some backends use
|
||
both REL and RELA relocations, and this flag is set for those
|
||
backends.) */
|
||
unsigned may_use_rela_p : 1;
|
||
|
||
/* Whether the default relocation type is RELA. If a backend with
|
||
this flag set wants REL relocations for a particular section,
|
||
it must note that explicitly. Similarly, if this flag is clear,
|
||
and the backend wants RELA relocations for a particular
|
||
section. */
|
||
unsigned default_use_rela_p : 1;
|
||
|
||
/* Set if RELA relocations for a relocatable link can be handled by
|
||
generic code. Backends that set this flag need do nothing in the
|
||
backend relocate_section routine for relocatable linking. */
|
||
unsigned rela_normal : 1;
|
||
|
||
/* TRUE if addresses "naturally" sign extend. This is used when
|
||
swapping in from Elf32 when BFD64. */
|
||
unsigned sign_extend_vma : 1;
|
||
|
||
unsigned want_got_plt : 1;
|
||
unsigned plt_readonly : 1;
|
||
unsigned want_plt_sym : 1;
|
||
unsigned plt_not_loaded : 1;
|
||
unsigned plt_alignment : 4;
|
||
unsigned can_gc_sections : 1;
|
||
unsigned can_refcount : 1;
|
||
unsigned want_got_sym : 1;
|
||
unsigned want_dynbss : 1;
|
||
/* Targets which do not support physical addressing often require
|
||
that the p_paddr field in the section header to be set to zero.
|
||
This field indicates whether this behavior is required. */
|
||
unsigned want_p_paddr_set_to_zero : 1;
|
||
};
|
||
|
||
/* 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 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;
|
||
|
||
/* Used by the backend linker to store the symbol hash table entries
|
||
associated with relocs against global symbols. */
|
||
struct elf_link_hash_entry **rel_hashes;
|
||
|
||
/* A pointer to the swapped relocs. If the section uses REL relocs,
|
||
rather than RELA, all the r_addend fields will be zero. This
|
||
pointer may be NULL. It is used by the backend linker. */
|
||
Elf_Internal_Rela *relocs;
|
||
|
||
/* A pointer to a linked list tracking dynamic relocs copied for
|
||
local symbols. */
|
||
void *local_dynrel;
|
||
|
||
/* A pointer to the bfd section used for dynamic relocs. */
|
||
asection *sreloc;
|
||
|
||
union {
|
||
/* Group name, if this section is a member of a group. */
|
||
const char *name;
|
||
|
||
/* Group signature sym, if this is the SHT_GROUP section. */
|
||
struct bfd_symbol *id;
|
||
} group;
|
||
|
||
/* A linked list of sections in the group. Circular when used by
|
||
the linker. */
|
||
asection *next_in_group;
|
||
|
||
/* A pointer used for various section optimizations. */
|
||
void *sec_info;
|
||
};
|
||
|
||
#define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd)
|
||
#define elf_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)
|
||
|
||
/* Return TRUE if section has been discarded. */
|
||
#define elf_discarded_section(sec) \
|
||
(!bfd_is_abs_section (sec) \
|
||
&& bfd_is_abs_section ((sec)->output_section) \
|
||
&& sec->sec_info_type != ELF_INFO_TYPE_MERGE \
|
||
&& sec->sec_info_type != ELF_INFO_TYPE_JUST_SYMS)
|
||
|
||
#define get_elf_backend_data(abfd) \
|
||
((const struct elf_backend_data *) (abfd)->xvec->backend_data)
|
||
|
||
/* This struct is used to pass information to routines called via
|
||
elf_link_hash_traverse which must return failure. */
|
||
|
||
struct elf_info_failed
|
||
{
|
||
bfd_boolean failed;
|
||
struct bfd_link_info *info;
|
||
struct bfd_elf_version_tree *verdefs;
|
||
};
|
||
|
||
/* This structure is used to pass information to
|
||
_bfd_elf_link_assign_sym_version. */
|
||
|
||
struct elf_assign_sym_version_info
|
||
{
|
||
/* Output BFD. */
|
||
bfd *output_bfd;
|
||
/* General link information. */
|
||
struct bfd_link_info *info;
|
||
/* Version tree. */
|
||
struct bfd_elf_version_tree *verdefs;
|
||
/* Whether we had a failure. */
|
||
bfd_boolean failed;
|
||
};
|
||
|
||
/* This structure is used to pass information to
|
||
_bfd_elf_link_find_version_dependencies. */
|
||
|
||
struct elf_find_verdep_info
|
||
{
|
||
/* Output BFD. */
|
||
bfd *output_bfd;
|
||
/* General link information. */
|
||
struct bfd_link_info *info;
|
||
/* The number of dependencies. */
|
||
unsigned int vers;
|
||
/* Whether we had a failure. */
|
||
bfd_boolean failed;
|
||
};
|
||
|
||
/* Some private data is stashed away for future use using the tdata pointer
|
||
in the bfd structure. */
|
||
|
||
struct elf_obj_tdata
|
||
{
|
||
Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */
|
||
Elf_Internal_Shdr **elf_sect_ptr;
|
||
Elf_Internal_Phdr *phdr;
|
||
struct elf_segment_map *segment_map;
|
||
struct elf_strtab_hash *strtab_ptr;
|
||
int num_locals;
|
||
int num_globals;
|
||
unsigned int num_elf_sections; /* elf_sect_ptr size */
|
||
int num_section_syms;
|
||
asymbol **section_syms; /* STT_SECTION symbols for each section */
|
||
Elf_Internal_Shdr symtab_hdr;
|
||
Elf_Internal_Shdr shstrtab_hdr;
|
||
Elf_Internal_Shdr strtab_hdr;
|
||
Elf_Internal_Shdr dynsymtab_hdr;
|
||
Elf_Internal_Shdr dynstrtab_hdr;
|
||
Elf_Internal_Shdr dynversym_hdr;
|
||
Elf_Internal_Shdr dynverref_hdr;
|
||
Elf_Internal_Shdr dynverdef_hdr;
|
||
Elf_Internal_Shdr symtab_shndx_hdr;
|
||
unsigned int symtab_section, shstrtab_section;
|
||
unsigned int strtab_section, dynsymtab_section;
|
||
unsigned int symtab_shndx_section;
|
||
unsigned int dynversym_section, dynverdef_section, dynverref_section;
|
||
file_ptr next_file_pos;
|
||
bfd_vma gp; /* The gp value */
|
||
unsigned int gp_size; /* The gp size */
|
||
|
||
/* Information grabbed from an elf core file. */
|
||
int core_signal;
|
||
int core_pid;
|
||
int core_lwpid;
|
||
char* core_program;
|
||
char* core_command;
|
||
|
||
/* A mapping from external symbols to entries in the linker hash
|
||
table, used when linking. This is indexed by the symbol index
|
||
minus the sh_info field of the symbol table header. */
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
|
||
/* Track usage and final offsets of GOT entries for local symbols.
|
||
This array is indexed by symbol index. Elements are used
|
||
identically to "got" in struct elf_link_hash_entry. */
|
||
union
|
||
{
|
||
bfd_signed_vma *refcounts;
|
||
bfd_vma *offsets;
|
||
struct got_entry **ents;
|
||
} local_got;
|
||
|
||
/* The linker ELF emulation code needs to let the backend ELF linker
|
||
know what filename should be used for a dynamic object if the
|
||
dynamic object is found using a search. The emulation code then
|
||
sometimes needs to know what name was actually used. Until the
|
||
file has been added to the linker symbol table, this field holds
|
||
the name the linker wants. After it has been added, it holds the
|
||
name actually used, which will be the DT_SONAME entry if there is
|
||
one. */
|
||
const char *dt_name;
|
||
|
||
/* Records the result of `get_program_header_size'. */
|
||
bfd_size_type program_header_size;
|
||
|
||
/* Used by find_nearest_line entry point. */
|
||
void *line_info;
|
||
|
||
/* Used by MIPS ELF find_nearest_line entry point. The structure
|
||
could be included directly in this one, but there's no point to
|
||
wasting the memory just for the infrequently called
|
||
find_nearest_line. */
|
||
struct mips_elf_find_line *find_line_info;
|
||
|
||
/* A place to stash dwarf1 info for this bfd. */
|
||
struct dwarf1_debug *dwarf1_find_line_info;
|
||
|
||
/* A place to stash dwarf2 info for this bfd. */
|
||
void *dwarf2_find_line_info;
|
||
|
||
/* An array of stub sections indexed by symbol number, used by the
|
||
MIPS ELF linker. FIXME: We should figure out some way to only
|
||
include this field for a MIPS ELF target. */
|
||
asection **local_stubs;
|
||
|
||
/* Used to determine if PT_GNU_EH_FRAME segment header should be
|
||
created. */
|
||
asection *eh_frame_hdr;
|
||
|
||
Elf_Internal_Shdr **group_sect_ptr;
|
||
int num_group;
|
||
|
||
/* Number of symbol version definitions we are about to emit. */
|
||
unsigned int cverdefs;
|
||
|
||
/* Number of symbol version references we are about to emit. */
|
||
unsigned int cverrefs;
|
||
|
||
/* Segment flags for the PT_GNU_STACK segment. */
|
||
unsigned int stack_flags;
|
||
|
||
/* Symbol version definitions in external objects. */
|
||
Elf_Internal_Verdef *verdef;
|
||
|
||
/* Symbol version references to external objects. */
|
||
Elf_Internal_Verneed *verref;
|
||
|
||
/* The Irix 5 support uses two virtual sections, which represent
|
||
text/data symbols defined in dynamic objects. */
|
||
asymbol *elf_data_symbol;
|
||
asymbol *elf_text_symbol;
|
||
asection *elf_data_section;
|
||
asection *elf_text_section;
|
||
|
||
/* Whether a dyanmic object was specified normally on the linker
|
||
command line, or was specified when --as-needed was in effect,
|
||
or was found via a DT_NEEDED entry. */
|
||
enum dynamic_lib_link_class dyn_lib_class;
|
||
|
||
/* This is set to TRUE if the object was created by the backend
|
||
linker. */
|
||
bfd_boolean linker;
|
||
|
||
/* Irix 5 often screws up the symbol table, sorting local symbols
|
||
after global symbols. This flag is set if the symbol table in
|
||
this BFD appears to be screwed up. If it is, we ignore the
|
||
sh_info field in the symbol table header, and always read all the
|
||
symbols. */
|
||
bfd_boolean bad_symtab;
|
||
|
||
/* Used to determine if the e_flags field has been initialized */
|
||
bfd_boolean flags_init;
|
||
};
|
||
|
||
#define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data)
|
||
#define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header)
|
||
#define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr)
|
||
#define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections)
|
||
#define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr)
|
||
#define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section)
|
||
#define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section)
|
||
#define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section)
|
||
#define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section)
|
||
#define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section)
|
||
#define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section)
|
||
#define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals)
|
||
#define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals)
|
||
#define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms)
|
||
#define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
|
||
#define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo)
|
||
#define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus)
|
||
#define elf_gp(bfd) (elf_tdata(bfd) -> gp)
|
||
#define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size)
|
||
#define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes)
|
||
#define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
|
||
#define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
|
||
#define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents)
|
||
#define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name)
|
||
#define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class)
|
||
#define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab)
|
||
#define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init)
|
||
|
||
extern void _bfd_elf_swap_verdef_in
|
||
(bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *);
|
||
extern void _bfd_elf_swap_verdef_out
|
||
(bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *);
|
||
extern void _bfd_elf_swap_verdaux_in
|
||
(bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *);
|
||
extern void _bfd_elf_swap_verdaux_out
|
||
(bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *);
|
||
extern void _bfd_elf_swap_verneed_in
|
||
(bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *);
|
||
extern void _bfd_elf_swap_verneed_out
|
||
(bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *);
|
||
extern void _bfd_elf_swap_vernaux_in
|
||
(bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *);
|
||
extern void _bfd_elf_swap_vernaux_out
|
||
(bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *);
|
||
extern void _bfd_elf_swap_versym_in
|
||
(bfd *, const Elf_External_Versym *, Elf_Internal_Versym *);
|
||
extern void _bfd_elf_swap_versym_out
|
||
(bfd *, const Elf_Internal_Versym *, Elf_External_Versym *);
|
||
|
||
extern int _bfd_elf_section_from_bfd_section
|
||
(bfd *, asection *);
|
||
extern char *bfd_elf_string_from_elf_section
|
||
(bfd *, unsigned, unsigned);
|
||
extern char *bfd_elf_get_str_section
|
||
(bfd *, unsigned);
|
||
extern Elf_Internal_Sym *bfd_elf_get_elf_syms
|
||
(bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *,
|
||
Elf_External_Sym_Shndx *);
|
||
extern const char *bfd_elf_local_sym_name
|
||
(bfd *, Elf_Internal_Sym *);
|
||
|
||
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);
|
||
|
||
#define elf_string_from_elf_strtab(abfd, strindex) \
|
||
bfd_elf_string_from_elf_section (abfd, elf_elfheader(abfd)->e_shstrndx, \
|
||
strindex)
|
||
|
||
extern void _bfd_elf_sprintf_vma
|
||
(bfd *, char *, bfd_vma);
|
||
extern void _bfd_elf_fprintf_vma
|
||
(bfd *, void *, bfd_vma);
|
||
|
||
extern bfd_byte _bfd_elf_encode_eh_address
|
||
(bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset,
|
||
asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded);
|
||
extern bfd_boolean _bfd_elf_can_make_relative
|
||
(bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section);
|
||
|
||
extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
|
||
(const Elf_Internal_Rela *);
|
||
extern bfd_vma _bfd_elf_rela_local_sym
|
||
(bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *);
|
||
extern bfd_vma _bfd_elf_rel_local_sym
|
||
(bfd *, Elf_Internal_Sym *, asection **, bfd_vma);
|
||
extern bfd_vma _bfd_elf_section_offset
|
||
(bfd *, struct bfd_link_info *, asection *, bfd_vma);
|
||
|
||
extern unsigned long bfd_elf_hash
|
||
(const char *);
|
||
|
||
extern bfd_reloc_status_type bfd_elf_generic_reloc
|
||
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
|
||
extern bfd_boolean bfd_elf_mkobject
|
||
(bfd *);
|
||
extern bfd_boolean bfd_elf_mkcorefile
|
||
(bfd *);
|
||
extern Elf_Internal_Shdr *bfd_elf_find_section
|
||
(bfd *, char *);
|
||
extern bfd_boolean _bfd_elf_make_section_from_shdr
|
||
(bfd *, Elf_Internal_Shdr *, const char *);
|
||
extern bfd_boolean _bfd_elf_make_section_from_phdr
|
||
(bfd *, Elf_Internal_Phdr *, int, const char *);
|
||
extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
|
||
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
|
||
extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
|
||
(bfd *);
|
||
extern void _bfd_elf_link_hash_copy_indirect
|
||
(const struct elf_backend_data *, 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_table_init
|
||
(struct elf_link_hash_table *, bfd *,
|
||
struct bfd_hash_entry *(*)
|
||
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
|
||
extern bfd_boolean _bfd_elf_slurp_version_tables
|
||
(bfd *);
|
||
extern bfd_boolean _bfd_elf_merge_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean bfd_elf_discard_group
|
||
(bfd *, struct bfd_section *);
|
||
extern void bfd_elf_set_group_contents
|
||
(bfd *, asection *, void *);
|
||
extern void _bfd_elf_link_just_syms
|
||
(asection *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_copy_private_symbol_data
|
||
(bfd *, asymbol *, bfd *, asymbol *);
|
||
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_reloc_upper_bound
|
||
(bfd *, sec_ptr);
|
||
extern long _bfd_elf_canonicalize_reloc
|
||
(bfd *, sec_ptr, arelent **, asymbol **);
|
||
extern long _bfd_elf_get_dynamic_reloc_upper_bound
|
||
(bfd *);
|
||
extern long _bfd_elf_canonicalize_dynamic_reloc
|
||
(bfd *, arelent **, asymbol **);
|
||
extern asymbol *_bfd_elf_make_empty_symbol
|
||
(bfd *);
|
||
extern void _bfd_elf_get_symbol_info
|
||
(bfd *, asymbol *, symbol_info *);
|
||
extern bfd_boolean _bfd_elf_is_local_label_name
|
||
(bfd *, const char *);
|
||
extern alent *_bfd_elf_get_lineno
|
||
(bfd *, asymbol *);
|
||
extern bfd_boolean _bfd_elf_set_arch_mach
|
||
(bfd *, enum bfd_architecture, unsigned long);
|
||
extern bfd_boolean _bfd_elf_find_nearest_line
|
||
(bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
|
||
unsigned int *);
|
||
#define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
|
||
#define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
|
||
extern int _bfd_elf_sizeof_headers
|
||
(bfd *, bfd_boolean);
|
||
extern bfd_boolean _bfd_elf_new_section_hook
|
||
(bfd *, asection *);
|
||
extern bfd_boolean _bfd_elf_init_reloc_shdr
|
||
(bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean);
|
||
extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr
|
||
(bfd *, const char *);
|
||
|
||
/* If the target doesn't have reloc handling written yet: */
|
||
extern void _bfd_elf_no_info_to_howto
|
||
(bfd *, arelent *, Elf_Internal_Rela *);
|
||
|
||
extern bfd_boolean bfd_section_from_shdr
|
||
(bfd *, unsigned int shindex);
|
||
extern bfd_boolean bfd_section_from_phdr
|
||
(bfd *, Elf_Internal_Phdr *, int);
|
||
|
||
extern int _bfd_elf_symbol_from_bfd_symbol
|
||
(bfd *, asymbol **);
|
||
|
||
extern asection *bfd_section_from_r_symndx
|
||
(bfd *, struct sym_sec_cache *, asection *, unsigned long);
|
||
extern asection *bfd_section_from_elf_index
|
||
(bfd *, unsigned int);
|
||
extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
|
||
(void);
|
||
|
||
extern struct elf_strtab_hash * _bfd_elf_strtab_init
|
||
(void);
|
||
extern void _bfd_elf_strtab_free
|
||
(struct elf_strtab_hash *);
|
||
extern bfd_size_type _bfd_elf_strtab_add
|
||
(struct elf_strtab_hash *, const char *, bfd_boolean);
|
||
extern void _bfd_elf_strtab_addref
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern void _bfd_elf_strtab_delref
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern void _bfd_elf_strtab_clear_all_refs
|
||
(struct elf_strtab_hash *);
|
||
extern bfd_size_type _bfd_elf_strtab_size
|
||
(struct elf_strtab_hash *);
|
||
extern bfd_size_type _bfd_elf_strtab_offset
|
||
(struct elf_strtab_hash *, bfd_size_type);
|
||
extern bfd_boolean _bfd_elf_strtab_emit
|
||
(bfd *, struct elf_strtab_hash *);
|
||
extern void _bfd_elf_strtab_finalize
|
||
(struct elf_strtab_hash *);
|
||
|
||
extern bfd_boolean _bfd_elf_discard_section_eh_frame
|
||
(bfd *, struct bfd_link_info *, asection *,
|
||
bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *);
|
||
extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_vma _bfd_elf_eh_frame_section_offset
|
||
(bfd *, asection *, bfd_vma);
|
||
extern bfd_boolean _bfd_elf_write_section_eh_frame
|
||
(bfd *, struct bfd_link_info *, asection *, bfd_byte *);
|
||
extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr
|
||
(struct bfd_link_info *);
|
||
|
||
extern bfd_boolean _bfd_elf_merge_symbol
|
||
(bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
|
||
asection **, bfd_vma *, struct elf_link_hash_entry **, bfd_boolean *,
|
||
bfd_boolean *, bfd_boolean *, bfd_boolean *);
|
||
|
||
extern bfd_boolean _bfd_elf_add_default_symbol
|
||
(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
|
||
const char *, Elf_Internal_Sym *, asection **, bfd_vma *,
|
||
bfd_boolean *, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_export_symbol
|
||
(struct elf_link_hash_entry *, void *);
|
||
|
||
extern bfd_boolean _bfd_elf_link_find_version_dependencies
|
||
(struct elf_link_hash_entry *, void *);
|
||
|
||
extern bfd_boolean _bfd_elf_link_assign_sym_version
|
||
(struct elf_link_hash_entry *, void *);
|
||
|
||
extern long _bfd_elf_link_lookup_local_dynindx
|
||
(struct bfd_link_info *, bfd *, long);
|
||
extern bfd_boolean _bfd_elf_compute_section_file_positions
|
||
(bfd *, struct bfd_link_info *);
|
||
extern void _bfd_elf_assign_file_positions_for_relocs
|
||
(bfd *);
|
||
extern file_ptr _bfd_elf_assign_file_position_for_section
|
||
(Elf_Internal_Shdr *, file_ptr, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_validate_reloc
|
||
(bfd *, arelent *);
|
||
|
||
extern bfd_boolean _bfd_elf_link_create_dynamic_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_create_dynamic_sections
|
||
(bfd *, struct bfd_link_info *);
|
||
extern bfd_boolean _bfd_elf_create_got_section
|
||
(bfd *, struct bfd_link_info *);
|
||
extern unsigned long _bfd_elf_link_renumber_dynsyms
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean _bfd_elfcore_make_pseudosection
|
||
(bfd *, char *, size_t, ufile_ptr);
|
||
extern char *_bfd_elfcore_strndup
|
||
(bfd *, char *, size_t);
|
||
|
||
extern Elf_Internal_Rela *_bfd_elf_link_read_relocs
|
||
(bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_link_size_reloc_section
|
||
(bfd *, Elf_Internal_Shdr *, asection *);
|
||
|
||
extern bfd_boolean _bfd_elf_link_output_relocs
|
||
(bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *);
|
||
|
||
extern bfd_boolean _bfd_elf_fix_symbol_flags
|
||
(struct elf_link_hash_entry *, struct elf_info_failed *);
|
||
|
||
extern bfd_boolean _bfd_elf_adjust_dynamic_symbol
|
||
(struct elf_link_hash_entry *, void *);
|
||
|
||
extern bfd_boolean _bfd_elf_link_sec_merge_syms
|
||
(struct elf_link_hash_entry *, void *);
|
||
|
||
extern bfd_boolean _bfd_elf_dynamic_symbol_p
|
||
(struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
|
||
|
||
extern bfd_boolean _bfd_elf_symbol_refs_local_p
|
||
(struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean);
|
||
|
||
extern 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 void bfd_elf32_swap_symbol_in
|
||
(bfd *, const void *, const void *, Elf_Internal_Sym *);
|
||
extern void bfd_elf32_swap_symbol_out
|
||
(bfd *, const Elf_Internal_Sym *, void *, void *);
|
||
extern void bfd_elf32_swap_reloc_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf32_swap_reloc_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf32_swap_reloca_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf32_swap_reloca_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf32_swap_phdr_in
|
||
(bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *);
|
||
extern void bfd_elf32_swap_phdr_out
|
||
(bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *);
|
||
extern void bfd_elf32_swap_dyn_in
|
||
(bfd *, const void *, Elf_Internal_Dyn *);
|
||
extern void bfd_elf32_swap_dyn_out
|
||
(bfd *, const Elf_Internal_Dyn *, void *);
|
||
extern long bfd_elf32_slurp_symbol_table
|
||
(bfd *, asymbol **, bfd_boolean);
|
||
extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr
|
||
(bfd *);
|
||
extern int bfd_elf32_write_out_phdrs
|
||
(bfd *, const Elf_Internal_Phdr *, unsigned int);
|
||
extern void bfd_elf32_write_relocs
|
||
(bfd *, asection *, void *);
|
||
extern bfd_boolean bfd_elf32_slurp_reloc_table
|
||
(bfd *, asection *, asymbol **, bfd_boolean);
|
||
|
||
extern const bfd_target *bfd_elf64_object_p
|
||
(bfd *);
|
||
extern const bfd_target *bfd_elf64_core_file_p
|
||
(bfd *);
|
||
extern char *bfd_elf64_core_file_failing_command
|
||
(bfd *);
|
||
extern int bfd_elf64_core_file_failing_signal
|
||
(bfd *);
|
||
extern bfd_boolean bfd_elf64_core_file_matches_executable_p
|
||
(bfd *, bfd *);
|
||
|
||
extern void bfd_elf64_swap_symbol_in
|
||
(bfd *, const void *, const void *, Elf_Internal_Sym *);
|
||
extern void bfd_elf64_swap_symbol_out
|
||
(bfd *, const Elf_Internal_Sym *, void *, void *);
|
||
extern void bfd_elf64_swap_reloc_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf64_swap_reloc_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf64_swap_reloca_in
|
||
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
|
||
extern void bfd_elf64_swap_reloca_out
|
||
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
|
||
extern void bfd_elf64_swap_phdr_in
|
||
(bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *);
|
||
extern void bfd_elf64_swap_phdr_out
|
||
(bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *);
|
||
extern void bfd_elf64_swap_dyn_in
|
||
(bfd *, const void *, Elf_Internal_Dyn *);
|
||
extern void bfd_elf64_swap_dyn_out
|
||
(bfd *, const Elf_Internal_Dyn *, void *);
|
||
extern long bfd_elf64_slurp_symbol_table
|
||
(bfd *, asymbol **, bfd_boolean);
|
||
extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr
|
||
(bfd *);
|
||
extern int bfd_elf64_write_out_phdrs
|
||
(bfd *, const Elf_Internal_Phdr *, unsigned int);
|
||
extern void bfd_elf64_write_relocs
|
||
(bfd *, asection *, void *);
|
||
extern bfd_boolean bfd_elf64_slurp_reloc_table
|
||
(bfd *, asection *, asymbol **, bfd_boolean);
|
||
|
||
extern 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_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
|
||
(bfd *, arelent *, struct bfd_symbol *, void *,
|
||
asection *, bfd *, char **);
|
||
|
||
extern bfd_boolean bfd_elf_final_link
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bfd_boolean bfd_elf_gc_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 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 *);
|
||
|
||
/* Exported interface for writing elf corefile notes. */
|
||
extern char *elfcore_write_note
|
||
(bfd *, char *, int *, const char *, int, const void *, int);
|
||
extern char *elfcore_write_prpsinfo
|
||
(bfd *, char *, int *, const char *, const char *);
|
||
extern char *elfcore_write_prstatus
|
||
(bfd *, char *, int *, long, int, const void *);
|
||
extern char * elfcore_write_pstatus
|
||
(bfd *, char *, int *, long, int, const void *);
|
||
extern char *elfcore_write_prfpreg
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_prxfpreg
|
||
(bfd *, char *, int *, const void *, int);
|
||
extern char *elfcore_write_lwpstatus
|
||
(bfd *, char *, int *, long, int, const void *);
|
||
|
||
extern bfd *_bfd_elf32_bfd_from_remote_memory
|
||
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
|
||
int (*target_read_memory) (bfd_vma, char *, int));
|
||
extern bfd *_bfd_elf64_bfd_from_remote_memory
|
||
(bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
|
||
int (*target_read_memory) (bfd_vma, char *, int));
|
||
|
||
/* SH ELF specific routine. */
|
||
|
||
extern bfd_boolean _sh_elf_set_mach_from_flags
|
||
(bfd *);
|
||
|
||
/* This is the condition under which finish_dynamic_symbol will be called.
|
||
If our finish_dynamic_symbol isn't called, we'll need to do something
|
||
about initializing any .plt and .got entries in relocate_section. */
|
||
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
|
||
((DYN) \
|
||
&& ((SHARED) \
|
||
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
|
||
&& ((H)->dynindx != -1 \
|
||
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
|
||
|
||
/* 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 \
|
||
{ \
|
||
bfd_boolean err; \
|
||
err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \
|
||
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \
|
||
if (!info->callbacks->undefined_symbol (info, \
|
||
h->root.root.string, \
|
||
input_bfd, \
|
||
input_section, \
|
||
rel->r_offset, err)) \
|
||
return FALSE; \
|
||
warned = TRUE; \
|
||
} \
|
||
} \
|
||
while (0)
|
||
|
||
#endif /* _LIBELF_H_ */
|